US3865353A - Mixer for highly viscous fluids - Google Patents

Mixer for highly viscous fluids Download PDF

Info

Publication number
US3865353A
US3865353A US308422A US30842272A US3865353A US 3865353 A US3865353 A US 3865353A US 308422 A US308422 A US 308422A US 30842272 A US30842272 A US 30842272A US 3865353 A US3865353 A US 3865353A
Authority
US
United States
Prior art keywords
mixing space
stirrer
mixing
tube
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US308422A
Inventor
Edgar Fischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Application granted granted Critical
Publication of US3865353A publication Critical patent/US3865353A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/40—Mixers with shaking, oscillating, or vibrating mechanisms with an axially oscillating rotary stirrer

Definitions

  • the present invention relates to a mixer for highly viscous fluids.
  • Homogeneous mixing of highly viscous fluids or melts with additives is a procedure frequently carried through for preparing samples in production control or for compounding. This problem does arise, for example, in the manufacture of lacquers, dispersions, ointments, soaps, pastes, dyestuff mixtures, compounds, waxes, plastics, synthetic fibers, and pharmaceutical preparations.
  • the absolute homogeneity of the repective mixture is indispensable for sample evaluation.
  • All known kneaders are to be filled with the optimum filling amount. With a minor filling amount the mixing effect strongly declines.
  • the kneaders are filled to such an extent that a gas space remains above the material to be mixed.
  • the known kneaders do not ensure protection from oxidation by atmospheric oxygen of the material to be mixed thus the quality of the mixture is often detrimentally affected, for example by discoloration or chemical alteration. It is, therefore, necessary to effect mixing at elevated temperature in this type of kneaders under a protective gas which increases the expenses of the mixing procedure.
  • all known kneaders are very complicated mechanical structures which are susceptible to trouble.
  • kneaders of known type cannot be constructed for small amounts, for example to 50 grams material to be mixed, without considerable expenditure to solve the bearing and tightness problems. Furthermore, emptying and cleaning of the known kneaders is complicated and time consuming. In many cases they have to be disassembled completely for cleaning.
  • a mixer for highly viscous fluids comprising a mixing space in the form ofa tube closed at one end by a stationary piston and at the other end by a movable piston which can be displaced in the direction of the tube axis and is provided with an axial boring through which a stirring means extends into the mixing space, said stirring means pivots round its axis and can be shifted in the direction of the said axis.
  • the mixer of the invention is of simple construction and can be readily heated.
  • the mixed. material can be removed from the mixer equally well either hot or cold and cleaning of the mixer is absolutely uncomplicated. A protective gas need not be used.
  • the mixing time is about one tenth of the mixing time required with known mixers. l 7
  • a tube 3 the mixing space 7 is shut off by a stationary piston 4 at the one end and a movable piston 5 at the other end which can be displaced in the direction of the tube axis.
  • Piston 5 is provided with an axial boring 8 through which a stirrer 6 extends into the gas space 7, which stirrer pivots. round its axis and can be shifted axially.
  • Tube 3 is placed in an oven 1 with heating 2.
  • Numeral 9 indicates the drive of stirrer 6.
  • the ratio of diameter to height of the mixing space may vary within relatively wide limits, with lifted stirrer it is in the range of about 5:1 to 1:5.
  • the mixing effect and heat exchange are especially favorable with a ratio of l:l to 1:3.
  • the ratio of the cross sectional areas of the stirring shaft to the annular piston should be in the range of from about 1:1 to 1:10, preferably 1:4 to l:8.
  • the stirring beam having a circular cross section has a good mixing but no conveying effect.
  • the latter can be obtained, if desired, by beam surfaces with clearance angles.
  • Stirrers with conveying effect exercise, however, a strong influence on the behavior with the stirring motion in axial direction as they promote or hinder the lifting process.
  • the mixer according to the invention is much easier to operate.
  • the movable piston 5 with stirrer 6 By pulling out the movable piston 5 with stirrer 6 the cylindrical mixing space becomes accessible.
  • the piston with stirrer is again inserted and thus the mixing space is sealed tightly.
  • the stirrer is set in motion. It moves in two directions, on the one hand, it rotates round the axis of its shaft, and on the other hand, it moves upwards and downwards in the direction of the shaft axis. By this double motion each point of the mixingspace is covered.
  • the movable annular piston moving in opposite direction with respect to the stirring shaft participates in the mixing procedure.
  • n0 cavities can occur.
  • the number of revolutions of the stirrer can be considerably increased and mixing can be accelerated.
  • the most favorable number of revolutions is in the range of from 50 to 300 revolutions and 5 to 12 up-and-down strockes of the movable piston per minute.
  • a mixing device for highly viscous fluids comprising a hollow elongated tube having first and second open end portions and defining a mixing space therein, a stationary piston removably mounted in a fixed position closing said first open end portion of the tube and a movable piston slidably mounted in and closing the second open end portion of the tube for movement through said mixing space; said movable piston having an axial bore formed therethrough; and a stirrer having an elongated shaft extending through said bore into said mixing space and having a mixing member thereon in the mixing space; whereby said movable piston is adapted to rest on the material to be mixed in said mixmeans includes means for moving said stirrer axially in said mixing space, said sliding piston maintaining a constant volume in the mixing space by moving vertically in said tube as the volume of the stirrer in the mixing space varies upon reciprocation of the stirrer therein.

Abstract

The mixer comprises a tube, one end of which is closed by a stationary piston and the other end by a piston movable in the direction of the tube axis and provided with an axial boring through which a stirrer extends into the tube. The stirrer pivots round its axis and can be shifted in axial direction.

Description

United States Patent Fischer 1 Feb. 11, 1975 MIXER FOR HIGHLY VISCOUS FLUIDS [56] References Cited [75] Inventor: Edgar Fischer, Frankfurt am Main, UNITED STATES PATENTS Germany 2,977,098 3/1961 Watson 259/108 0/1964 Cook [73] Asslgnee. IIoechst Aktlengesellschaft, 3453531 1 Frankfurt am Main7 Germany 3,417,971 12/1968 Blank 259/37 [22] Filed: 1972 Primary Examiner--Robert W. Jenkins 2 303,422 Attorney, Agent, or Firm-Curtis, Morris & Safford [30] Foreign Application Priority Data [57] ABSTRACT Nov. 23, 1971 Germany 2158002 The mix r mprises a tu e. one n of which is closed by a stationary piston and the other end by a [52] U.S. Cl 259/118, 259/ 124, 259/113 piston movable in the direction of the tube axis and [51] Int. Cl B0lf 7/22 provided with an axial boring through which a stirrer [58] Field of Search 259/102, 107, 108, 37, extends into the tube. The stirrer pivots round its axis and can be shifted in axial direction.
3 Claims, 1 Drawing Figure PATENTEU FEB! 1 I975 MIXER FOR HIGHLY VISCOUS FLUIDS The present invention relates to a mixer for highly viscous fluids.
Homogeneous mixing of highly viscous fluids or melts with additives is a procedure frequently carried through for preparing samples in production control or for compounding. This problem does arise, for example, in the manufacture of lacquers, dispersions, ointments, soaps, pastes, dyestuff mixtures, compounds, waxes, plastics, synthetic fibers, and pharmaceutical preparations. The absolute homogeneity of the repective mixture is indispensable for sample evaluation.
All known kneaders are to be filled with the optimum filling amount. With a minor filling amount the mixing effect strongly declines. The kneaders are filled to such an extent that a gas space remains above the material to be mixed. When mixing is effected at elevated temperature, the known kneaders do not ensure protection from oxidation by atmospheric oxygen of the material to be mixed thus the quality of the mixture is often detrimentally affected, for example by discoloration or chemical alteration. It is, therefore, necessary to effect mixing at elevated temperature in this type of kneaders under a protective gas which increases the expenses of the mixing procedure. Moreover, all known kneaders are very complicated mechanical structures which are susceptible to trouble. They have the drawback of relatively long mixing times as the kneading elements cannot be run much faster than corresponds to the free flowing speed of the material to be'mixed. A further disadvantage resides in the fact that kneaders of known type cannot be constructed for small amounts, for example to 50 grams material to be mixed, without considerable expenditure to solve the bearing and tightness problems. Furthermore, emptying and cleaning of the known kneaders is complicated and time consuming. In many cases they have to be disassembled completely for cleaning.
To overcome the aforesaid disadvantages a mixer for highly viscous fluids has been developed comprising a mixing space in the form ofa tube closed at one end by a stationary piston and at the other end by a movable piston which can be displaced in the direction of the tube axis and is provided with an axial boring through which a stirring means extends into the mixing space, said stirring means pivots round its axis and can be shifted in the direction of the said axis.
The mixer of the invention is of simple construction and can be readily heated. The mixed. material can be removed from the mixer equally well either hot or cold and cleaning of the mixer is absolutely uncomplicated. A protective gas need not be used. The mixing time is about one tenth of the mixing time required with known mixers. l 7
The mixer according to the invention will now be described in further detail by way of example with reference to the accompanying drawing.
In a tube 3 the mixing space 7 is shut off by a stationary piston 4 at the one end and a movable piston 5 at the other end which can be displaced in the direction of the tube axis. Piston 5 is provided with an axial boring 8 through which a stirrer 6 extends into the gas space 7, which stirrer pivots. round its axis and can be shifted axially. Tube 3 is placed in an oven 1 with heating 2. Numeral 9 indicates the drive of stirrer 6.
The ratio of diameter to height of the mixing space may vary within relatively wide limits, with lifted stirrer it is in the range of about 5:1 to 1:5. The mixing effect and heat exchange are especially favorable with a ratio of l:l to 1:3. The ratio of the cross sectional areas of the stirring shaft to the annular piston should be in the range of from about 1:1 to 1:10, preferably 1:4 to l:8.
The stirring beam having a circular cross section has a good mixing but no conveying effect. The latter can be obtained, if desired, by beam surfaces with clearance angles. Stirrers with conveying effect exercise, however, a strong influence on the behavior with the stirring motion in axial direction as they promote or hinder the lifting process.
As compared with known kneaders the mixer according to the invention is much easier to operate. By pulling out the movable piston 5 with stirrer 6 the cylindrical mixing space becomes accessible. After the material to be mixed has been filled in, the piston with stirrer is again inserted and thus the mixing space is sealed tightly. When the material to be mixed has reached the desired temperature, the stirrer is set in motion. It moves in two directions, on the one hand, it rotates round the axis of its shaft, and on the other hand, it moves upwards and downwards in the direction of the shaft axis. By this double motion each point of the mixingspace is covered. The movable annular piston moving in opposite direction with respect to the stirring shaft participates in the mixing procedure. Thus during mixing the ratio of height to width of the mixing space permanently varies, which additionally favors the mixing process. The motion in longitudinal direction of annular piston and stirring shaft takes place in a manner such that one part is active while the other part is passive. The respective part becomes active by loading and passive by relief of the load, the downward motion being active and the upward motion passive.
Because of the mixing space being completely filled with the material to be mixed, n0 cavities can occur. The number of revolutions of the stirrer can be considerably increased and mixing can be accelerated. The most favorable number of revolutions is in the range of from 50 to 300 revolutions and 5 to 12 up-and-down strockes of the movable piston per minute. These values and the required driving power strongly depend on the viscosity of the material to be mixed.
When mixing is terminated, stirring is discontinued and stationary piston 4 is removed. By pushing downward piston 5 together with stirrer 6 the mixed material is discharged at the lower end of the tube. It can be molded at once into shaped articles, for example by pressing. After removal of the mixed material, piston 5 together with stirrer 6 are drawn out of the tube and stationary piston 4 is inserted at the lower end of the tube, whereupon the mixer is again ready for use.
What is claimed is:
1 A mixing device for highly viscous fluids comprising a hollow elongated tube having first and second open end portions and defining a mixing space therein, a stationary piston removably mounted in a fixed position closing said first open end portion of the tube and a movable piston slidably mounted in and closing the second open end portion of the tube for movement through said mixing space; said movable piston having an axial bore formed therethrough; and a stirrer having an elongated shaft extending through said bore into said mixing space and having a mixing member thereon in the mixing space; whereby said movable piston is adapted to rest on the material to be mixed in said mixmeans includes means for moving said stirrer axially in said mixing space, said sliding piston maintaining a constant volume in the mixing space by moving vertically in said tube as the volume of the stirrer in the mixing space varies upon reciprocation of the stirrer therein.

Claims (3)

1. A mixing device for highly viscous fluids comprising a hollow elongated tube having first and second open end portions and defining a mixing space therein, a stationary piston removably mounted in a fixed position closing said first open end portion of the tube and a movable piston slidably mounted in and closing the second open end portion of the tube for movement through said mixing space; said movable piston having an axial bore formed therethrough; and a stirrer having an elongated shaft extending through said bore into said mixing space and having a mixing member thereon in the mixing space; whereby said movable piston is adapted to rest on the material to be mixed in said mixing space to maintain a relatively constant volume therein and preveNt formation of gas spaces in the mixing space.
2. The device as defined in claim 1 including means for rotating said stirrer in said bore.
3. The device as defined in claim 2 wherein said means includes means for moving said stirrer axially in said mixing space, said sliding piston maintaining a constant volume in the mixing space by moving vertically in said tube as the volume of the stirrer in the mixing space varies upon reciprocation of the stirrer therein.
US308422A 1971-11-23 1972-11-21 Mixer for highly viscous fluids Expired - Lifetime US3865353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2158002A DE2158002C3 (en) 1971-11-23 1971-11-23 Mixer for high viscosity liquids

Publications (1)

Publication Number Publication Date
US3865353A true US3865353A (en) 1975-02-11

Family

ID=5825880

Family Applications (1)

Application Number Title Priority Date Filing Date
US308422A Expired - Lifetime US3865353A (en) 1971-11-23 1972-11-21 Mixer for highly viscous fluids

Country Status (9)

Country Link
US (1) US3865353A (en)
JP (1) JPS5623651B2 (en)
BE (1) BE791808A (en)
CA (1) CA988924A (en)
DE (1) DE2158002C3 (en)
FR (1) FR2160955B1 (en)
GB (1) GB1414515A (en)
IT (1) IT972257B (en)
NL (1) NL7215583A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634717A (en) * 1995-12-01 1997-06-03 Eastman Kodak Company Bulk mixing flow diverter
WO2001043858A2 (en) * 1999-12-14 2001-06-21 Herbak Zsolt Device for mixing viscous liquids
WO2003064142A1 (en) * 2002-01-28 2003-08-07 Stemma S.R.L. Mixing and injection unit for polyurethane with two or more liquid components
US20050174884A1 (en) * 2002-11-15 2005-08-11 Farrell James J. Rinseable splash shield and method of use
US20050201198A1 (en) * 2002-11-15 2005-09-15 Farrell James J. Rinseable splash shield and method of use
US20080065088A1 (en) * 2006-09-07 2008-03-13 Wyeth Bone Cement Mixing Systems and Related Methods
US20090043282A1 (en) * 2005-04-29 2009-02-12 Wyeth Drug Delivery Devices and Related Components, Systems and Methods
ES2330699A1 (en) * 2007-03-30 2009-12-14 Jorge Guerra De La Fuente Self-cleaning mixing head (Machine-translation by Google Translate, not legally binding)
US20110088558A1 (en) * 2009-10-16 2011-04-21 F'real Foods, Llc Commercial frozen food preparation apparatus sanitation
CN102242534A (en) * 2011-06-30 2011-11-16 佛山市绿源纤维模塑科技有限公司 Overflow device of pulp molding machine
US20130204201A1 (en) * 2010-04-09 2013-08-08 Sanofi-Aventis Deutschland Gmbh Coded drug reservoir connection element with bendable locking elements
US20150313413A1 (en) * 2014-03-28 2015-11-05 Güdpod Holdings, Llc System for mixing beverages and method of doing the same
CN116726756A (en) * 2023-08-15 2023-09-12 福建紫金矿冶测试技术有限公司 Sample mixing equipment for mineral sample detection and application method thereof

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5324568U (en) * 1976-08-10 1978-03-02
FR2451329A1 (en) * 1979-03-13 1980-10-10 Colin Michel Centrifugal extractor for silo - has shaft with chains movable vertically to sweep walls clean of material
DE3117014C2 (en) * 1981-04-29 1988-09-29 Rudi H. Ing.(grad.) 8000 München Keuerleber Device for producing an especially foamable mixture from at least two preferably chemically reactive plastic components
US4784216A (en) * 1986-09-08 1988-11-15 Paul E. Bracegirdle Heating and/or drying apparatus
US5150967A (en) * 1988-07-18 1992-09-29 Jim L. Neilson Milkshake machine
US5962060A (en) * 1996-05-17 1999-10-05 f'Real| Foods, LLC Method for making frozen drinks
US6326047B1 (en) 1997-05-30 2001-12-04 Stevens-Lee Company Apparatus and method for making frozen drinks
BR9910322A (en) 1998-05-14 2001-09-25 Stevens Lee Company Cutting device and method for cutting a material from a container
US6041961A (en) * 1998-05-14 2000-03-28 F'real! Foods, Llc Cup with anti-rotation mechanism
US8336731B2 (en) 2008-11-05 2012-12-25 F'real Foods, Llc Method and apparatus for rotationally restraining a mixing container
RU2616913C1 (en) * 2016-02-15 2017-04-18 Акционерное общество "Федеральный научно-производственный центр "Алтай" Mixer of mixed solid rocket propellant components
CN113524476B (en) * 2021-07-15 2023-03-21 比安斯(东莞)热固性复合材料有限公司 System for fine automatic blending of resin glass

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977098A (en) * 1957-06-21 1961-03-28 Baker Perkins Ltd Mixing machines for rubbers and plastic substances
US3153531A (en) * 1963-08-29 1964-10-20 Semco Res Inc Mixing cartridge for sealant compound
US3417971A (en) * 1967-02-23 1968-12-24 Robert J. Blank Mixing and ejection tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977098A (en) * 1957-06-21 1961-03-28 Baker Perkins Ltd Mixing machines for rubbers and plastic substances
US3153531A (en) * 1963-08-29 1964-10-20 Semco Res Inc Mixing cartridge for sealant compound
US3417971A (en) * 1967-02-23 1968-12-24 Robert J. Blank Mixing and ejection tool

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5634717A (en) * 1995-12-01 1997-06-03 Eastman Kodak Company Bulk mixing flow diverter
WO2001043858A2 (en) * 1999-12-14 2001-06-21 Herbak Zsolt Device for mixing viscous liquids
WO2001043858A3 (en) * 1999-12-14 2001-12-27 Zsolt Herbak Device for mixing viscous liquids
US20030107947A1 (en) * 1999-12-14 2003-06-12 Zsolt Herbak Device for mixing viscous liquids
WO2003064142A1 (en) * 2002-01-28 2003-08-07 Stemma S.R.L. Mixing and injection unit for polyurethane with two or more liquid components
US7520658B2 (en) 2002-11-15 2009-04-21 F'real! Foods, Llc Rinseable splash shield and method of use
US20050201198A1 (en) * 2002-11-15 2005-09-15 Farrell James J. Rinseable splash shield and method of use
US20060077756A1 (en) * 2002-11-15 2006-04-13 Farrell James J Rinseable splash shield and method of use
US7144150B2 (en) 2002-11-15 2006-12-05 F'real Foods L.L.C. Rinseable splash shield and method of use
US7520662B2 (en) 2002-11-15 2009-04-21 F'real? Foods, Llc Rinseable splash shield and method of use
US20050174884A1 (en) * 2002-11-15 2005-08-11 Farrell James J. Rinseable splash shield and method of use
US20090043282A1 (en) * 2005-04-29 2009-02-12 Wyeth Drug Delivery Devices and Related Components, Systems and Methods
US20080065088A1 (en) * 2006-09-07 2008-03-13 Wyeth Bone Cement Mixing Systems and Related Methods
ES2330699A1 (en) * 2007-03-30 2009-12-14 Jorge Guerra De La Fuente Self-cleaning mixing head (Machine-translation by Google Translate, not legally binding)
US20110088558A1 (en) * 2009-10-16 2011-04-21 F'real Foods, Llc Commercial frozen food preparation apparatus sanitation
US8763515B2 (en) 2009-10-16 2014-07-01 F'real Foods, Llc Commercial frozen food preparation apparatus sanitation
US20130204201A1 (en) * 2010-04-09 2013-08-08 Sanofi-Aventis Deutschland Gmbh Coded drug reservoir connection element with bendable locking elements
US9061110B2 (en) * 2010-04-09 2015-06-23 Sanofi-Aventis Deutschland Gmbh Coded drug reservoir connection element with bendable locking elements
CN102242534A (en) * 2011-06-30 2011-11-16 佛山市绿源纤维模塑科技有限公司 Overflow device of pulp molding machine
CN102242534B (en) * 2011-06-30 2014-02-26 佛山市绿源纤维模塑科技有限公司 Overflow device of pulp molding machine
US20150313413A1 (en) * 2014-03-28 2015-11-05 Güdpod Holdings, Llc System for mixing beverages and method of doing the same
US10182682B2 (en) * 2014-03-28 2019-01-22 Gudpod Corp. System for mixing beverages and method of doing the same
CN116726756A (en) * 2023-08-15 2023-09-12 福建紫金矿冶测试技术有限公司 Sample mixing equipment for mineral sample detection and application method thereof
CN116726756B (en) * 2023-08-15 2023-10-24 福建紫金矿冶测试技术有限公司 Sample mixing equipment for mineral sample detection and application method thereof

Also Published As

Publication number Publication date
DE2158002C3 (en) 1979-05-03
BE791808A (en) 1973-05-23
CA988924A (en) 1976-05-11
JPS5623651B2 (en) 1981-06-01
GB1414515A (en) 1975-11-19
IT972257B (en) 1974-05-20
FR2160955B1 (en) 1980-04-18
JPS4863360A (en) 1973-09-03
DE2158002A1 (en) 1973-05-24
NL7215583A (en) 1973-05-25
FR2160955A1 (en) 1973-07-06
DE2158002B2 (en) 1978-09-07

Similar Documents

Publication Publication Date Title
US3865353A (en) Mixer for highly viscous fluids
KR0151750B1 (en) Mixing device and method thereof
US4357111A (en) Continuous mixing device and process
US3861656A (en) Vertical mixer
CN107617358A (en) A kind of polycarboxylate high performance water-reducing agent Preparation equipment for becoming scope disturbance
KR101986180B1 (en) Powder metallurgy manufacturing facility and manufacturing method of powder metallurgy using the same
CH438223A (en) Mixing and dispersing machine
US2863649A (en) Equipment for the accurate metering, proportional blending, thorough mixing and dispensing of multi-component resin mixtures
WO1984002530A1 (en) Method for the continuous production of flowing and homogeneous mixtures based on synthetic materials with additives
CN206613405U (en) Powder agitator tank
US3770251A (en) Apparatus for mixing plastics materials and the like during processing thereof
JPH08108057A (en) Vertically movable rotary agitator
CN217189504U (en) High-viscosity material stirring device and reaction kettle comprising same
US3263969A (en) Spindle stabilizer
US6224251B1 (en) Continuous kneading machine
KR0160089B1 (en) Small blending apparatus
CN117380045B (en) Raw material adding device for processing high-temperature-resistant powder coating
CN214210375U (en) Take horizontal mixer for production refractory material of push-pull valve
US1354452A (en) Machine for treating rubber and similar materials
CN219667113U (en) Plastic mixing mechanism
JP2000218616A (en) Synthetic resin mixing/stirring device
US3218039A (en) Apparatus for mixing ingredients of synthetic resins and the like
CN220110914U (en) Refining batching jar
CN107803175A (en) A kind of modified chemical reaction kettle
CN108068222A (en) A kind of molding powder agitating and heating equipment