CN107185473A - A kind of anticlogging reactor - Google Patents

A kind of anticlogging reactor Download PDF

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Publication number
CN107185473A
CN107185473A CN201710568243.9A CN201710568243A CN107185473A CN 107185473 A CN107185473 A CN 107185473A CN 201710568243 A CN201710568243 A CN 201710568243A CN 107185473 A CN107185473 A CN 107185473A
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CN
China
Prior art keywords
kettle
filter screen
anticlogging
gravity sensor
agitating shaft
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.)
Granted
Application number
CN201710568243.9A
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Chinese (zh)
Other versions
CN107185473B (en
Inventor
罗秋
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.)
Hengyang Yishun Chemical Co Ltd
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Hengyang Yishun Chemical Co Ltd
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Publication date
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Priority to CN201710568243.9A priority Critical patent/CN107185473B/en
Publication of CN107185473A publication Critical patent/CN107185473A/en
Application granted granted Critical
Publication of CN107185473B publication Critical patent/CN107185473B/en
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Anticipated expiration legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18Stationary reactors having moving elements inside
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/70Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D29/72Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053Details of the reactor

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The present invention relates to field of chemical equipment, specifically related to a kind of anticlogging reactor, including kettle, the top of kettle is provided with kettle cover, rabbling mechanism is installed on kettle cover, the filter screen for adapting to kettle cross section is installed below agitating shaft, gravity sensor is installed on the marginal position of filter screen, the bottom of gravity sensor is provided with vibrating mass, vibrating mass includes fixed seat and vibrator, circuit board is installed in vibrator, and circuit board is electrically connected with gravity sensor, the bottom of kettle offers discharging opening, hemispherical filtering backstop is installed on discharging opening, discharge outlet is coated with a heating tape.The present invention is simple in construction, is easy to operation, realizes and reduces material in reactor easily obstructed generation in circulation, and reduces the bulk in material, while can avoid because of temperature change, causes discharge outlet occur the generation blocked occur.

Description

A kind of anticlogging reactor
Technical field
The present invention relates to field of chemical equipment, and in particular to a kind of anticlogging reactor.
Background technology
Reactor is the conventional production equipment of chemical industry, generally comprise tank body and the material inlet that is arranged on tank body and Outlet for product and control valve and the circulating condensing separator that is arranged at the top of tank body etc.;Tank interior is provided with importing heat The heat cycles device of steam or high temperature heat conductive oil;Closed for the liquid material and solid, liquid compound in input different viscosities In the case of reaction, tank interior is also generally provided with motor-driven different sizes and difference stirs stirring for Homogenization Mean Mix device;At present, the reactor stirring homogenizer used in chemical industry mainly has following a few classes:One is fixed on agitating shaft connect The translamella slurry agitating device of order one;The second is being fixedly connected with the agitating device of single anchor formula slurry at agitating shaft bottom;The third is In the affixed frame slurry agitating device in agitating shaft bottom;Above-mentioned several agitators are during different chemical synthesis process, although The application advantage had nothing in common with each other but for applying in highly viscous liquid and liquid solid-state reaction material course of reaction, but in the presence of not With the problem of defect, the serious generation that results even in do not meet the negatively reactions such as oxidation, the polymerization of processing parameter so that Damage the quality and yield rate of sintetics.
In addition, the conventional stirring apparatus for reaction kettle of current chemical industry is also in the presence of often asking of being ignored of people Topic, that is, the cavity belonged between the tank body discharge outlet of blind area and its control valve of connection of agitating device homogenizing material, easily For the solid, liquid feed blocking problem of high-consistency.The presence of this problem, it will cause production safety hidden danger often to show.Solve The certainly problem, it is necessary to pounded in discharging with steel rod and get material cavity, or unload discharge valve, do not noted slightly so, may result in Material is splashed on human body, causes the major accidents such as injury of human;Often it is processed as simultaneously, also can injury response kettle be relevant sets Put, so as to improve production run cost.
The content of the invention
For defect of the prior art, the present invention provides a kind of anticlogging reactor, realizes in reduction reactor The material generation easily obstructed in circulation, and the bulk in material is reduced, while can avoid because of temperature change, cause There is discharge outlet and the generation blocked occur.
To reach above-mentioned purpose, the present invention is adopted the following technical scheme that:
A kind of anticlogging reactor, including kettle, the top of the kettle, which is provided with kettle cover, the kettle cover, to be provided with Rabbling mechanism, the rabbling mechanism includes power part, agitating shaft and axle envelope part, and one end of the agitating shaft is described in Kettle cover, which stretches into be provided with the inside of the kettle, the agitating shaft below paddle, the agitating shaft, is provided with adaptation kettle Gravity sensor is installed, the bottom of the gravity sensor is installed on the filter screen of body cross section, the marginal position of the filter screen There is vibrating mass, the vibrating mass includes being provided with circuit board, and the circuit in fixed seat and vibrator, the vibrator Plate is electrically connected with the gravity sensor, the bottom of the kettle offer be provided with discharging opening, the discharging opening it is hemispherical Backstop is filtered, the discharge outlet is coated with a heating tape.
As an improvement technical scheme, the kettle cover is hinged with the kettle, and be further opened with the kettle cover into Coordinate to be provided with to coordinate on feed pipe, the marginal position of the kettle cover in material mouth, the charging aperture and seal washer is installed.
As an improvement technical scheme, the paddle is U-shaped paddle, and the U-shaped paddle is installed on described The top of filter screen.
As an improvement technical scheme, the inwall of the filter screen and the kettle is at an angle, and in the kettle Wall offers access hole close to filter screen than relatively low position, and the access hole is hinged with maintenance door, the maintenance door and is provided with Sealing gasket and handle.
As an improvement technical scheme, waterproof painting is all coated with the vibrating mass and the gravity sensor Layer, the filter screen uses stainless steel filtering net.
As an improvement technical scheme, the fixed seat includes overhead gage and lower baffle plate, the overhead gage and lower block Constitute to realize between plate and offer chute, the filter on the free gap of filter screen up-down vibration, the inwall of the lower baffle plate The bottom of net is provided with the sliding block coordinated with the chute.
Due to using above technical scheme, the invention has the advantages that:
Rabbling mechanism includes power part, agitating shaft and axle envelope part, and one end and the power part power of agitating shaft are pacified Dress, the other end of agitating shaft stretches into the inside of kettle through kettle cover, and is placed on the agitating shaft inside kettle and is provided with paddle, The filter screen for being provided with below the axle envelope part being engaged with kettle cover, agitating shaft and adapting to kettle cross section is installed on agitating shaft, Gravity sensor is installed, the bottom of gravity sensor is provided with vibrating mass, and vibrating mass includes on the marginal position of filter screen Circuit board is installed in fixed seat and vibrator, vibrator, and circuit board is electrically connected with gravity sensor, the bottom of kettle is opened up Have and hemispherical filtering backstop is installed on discharging opening, discharging opening, discharge outlet is coated with a heating tape;In the use of the present invention, Rabbling mechanism can be stirred to the article in reactor and can be well mixed, thing when axle envelope part can avoid stirring Material is leaked by agitating shaft, filter screen set can be in filter material bulk, gravity sensor can be sensed when filter screen has Gravity beyond the mark can be produced during bulk, gravity sensor can be passed the signal along on circuit board, so as to control bobbing machine The vibrator band electric filter of structure is vibrated, it is to avoid blocking of the material to screen pack, spherical filtering backstop being capable of some particles Larger material, while alluvial can be avoided on discharging opening, it is to avoid result in blockage, heating tape can be to the material of discharge outlet Temperature be controlled, it is to avoid occur because of temperature change, cause discharge outlet occur the generation blocked occur.
Kettle cover is hinged with kettle, and charging aperture is further opened with kettle cover, and the interior cooperation of charging aperture is provided with feed pipe, kettle cover Coordinate on marginal position and seal washer is installed;In the use of the present invention, kettle cover and being hinged for kettle can make the switch of kettle cover Can close automatically, charging aperture is arranged at the convenience that operation is added on kettle cover, seal washer add kettle cover and kettle it Between sealing.
Paddle is U-shaped paddle, and U-shaped paddle is installed on the top of filter screen;In the use of the present invention, U-shaped paddle Stirring area is added, the top that U-shaped paddle is arranged at filter screen can stir to material.
The inwall of filter screen and kettle is at an angle, and inner wall of kettle offers access hole close to filter screen than relatively low position, Access hole is hinged with maintenance door, maintenance door and is provided with sealing gasket and handle;In the use of the present invention, the inwall of filter screen and kettle It is at an angle when vibrator is vibrated by the material of bulk with the marginal position of vibration movement to filter screen, it is to avoid it is stifled Plug, the setting of access hole and maintenance door can be cleaned when reactor is shut down to filter screen, the handle easy access of maintenance door The opening of door, sealing gasket adds sealing effectiveness.
Waterproof coating is all coated with vibrating mass and gravity sensor, filter screen uses stainless steel filtering net;The present invention makes Used time, the cladding of waterproof coating adds the water resistance of vibrating mass and gravity sensor, and stainless steel filtering net, which is added, to be used Life-span.
Fixed seat includes overhead gage and lower baffle plate, constitutes to realize filter screen up-down vibration between overhead gage and lower baffle plate Chute is offered on free gap, the inwall of lower baffle plate, the bottom of filter screen is provided with the sliding block coordinated with chute;The present invention makes The setting of used time, overhead gage and lower baffle plate, which adds the chute opened up on the stability of filter screen, lower baffle plate inwall, can make filter screen Move up and down.
In summary, the present invention provides a kind of anticlogging reactor, simple in construction, is easy to operation, reduces in reactor The material generation easily obstructed in circulation, and the bulk in material is reduced, while can avoid because of temperature change, cause There is discharge outlet and the generation blocked occur.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art The accompanying drawing used required in embodiment or description of the prior art is briefly described.In all of the figs, similar element Or part is general by similar reference mark.In accompanying drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is structural representation of the invention;
In figure:1- kettlies, 2- kettle covers, 3- power parts, 4- agitating shafts, 5- axle envelope parts, 6- paddles, 7- filter screens, 8- Gravity sensor, 9- vibrating mass, 10- overhead gages, 11- lower baffle plates, 12- charging apertures, 13- discharging openings, 14- heating tapes, 15- inspections Repair door.
Embodiment
Technical solution of the present invention is described in detail below in conjunction with embodiment.Following examples are only used for more clear Illustrate to Chu technical scheme, therefore be only used as example, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of anticlogging reactor, including kettle 1, the top of kettle 1 is provided with kettle cover 2, kettle cover 2 Rabbling mechanism is installed, rabbling mechanism includes power part 3, agitating shaft 4 and axle envelope part 5, one end of agitating shaft 4 and power The power of part 3 is installed, and the other end of agitating shaft 4 stretches into the inside of kettle 1 through kettle cover 2, and the agitating shaft being placed in inside kettle 1 The axle envelope part 5 for being provided with and being engaged with kettle cover 2 on paddle 6, agitating shaft 4 is installed, the lower section of agitating shaft 4 is provided with 4 Adapt to that gravity sensor 8 is installed on the filter screen 7 of the cross section of kettle 1, the marginal position of filter screen 7, the bottom peace of gravity sensor 8 Equipped with vibrating mass 9, vibrating mass 9 includes being provided with circuit board, and circuit board and gravity in fixed seat and vibrator, vibrator Inductor 8 is electrically connected, and the bottom of kettle 1, which is offered, is provided with hemispherical filtering backstop, discharging opening on discharging opening 13, discharging opening 13 A heating tape 14 is coated with 13.
Wherein rabbling mechanism can be stirred to the article in reactor and can be well mixed, the energy of axle envelope part 5 Enough avoid material during stirring from being leaked by agitating shaft 4, filter screen 7 set can be in filter material bulk, the energy of gravity sensor 8 Gravity beyond the mark can be produced when filter screen 7 has bulk by enough sensing, gravity sensor 8 can pass the signal along to circuit board On, so as to control the vibrator band electric filter 7 of vibrating mechanism to be vibrated, it is to avoid blocking of the material to screen pack 7, spherical mistake Filter backstop can the larger material of some particles, while can avoid alluvial on discharging opening 13, it is to avoid result in blockage, heating tape 14 can be controlled to the temperature of the material at discharging opening 13, it is to avoid occur because of temperature change, cause to occur at discharging opening 13 There is the generation blocked.
In the present embodiment, kettle cover 2 is hinged with kettle 1, and is further opened with coordinating in charging aperture 12, charging aperture 12 on kettle cover It is provided with to coordinate on feed pipe, the marginal position of kettle cover 2 and seal washer is installed;Kettle cover 2 can make kettle cover with being hinged for kettle 1 2 switch can be closed automatically, and charging aperture 12 is arranged at the convenience that operation is added on kettle cover 2, and seal washer adds kettle Sealing between lid 2 and kettle 1.
In the present embodiment, paddle 6 is U-shaped paddle 6, and U-shaped paddle 6 is installed on the top of filter screen 7;U-shaped stirring Leaf 6 adds stirring area, and the top that U-shaped paddle 6 is arranged at filter screen 7 can stir to material.
In the present embodiment, the inwall of filter screen 7 and kettle 1 is at an angle, and the inwall of kettle 1 close to filter screen 7 than relatively low Position offers access hole, and access hole is hinged with maintenance door 15, maintenance door 15 and is provided with sealing gasket and handle;Filter screen 7 and kettle The inwall of body 1 it is at an angle when vibrator is vibrated by the material of bulk with vibration movement to the marginal position of filter screen 7 On, it is to avoid block, the setting of access hole and maintenance door 15 can be cleaned when reactor is shut down to filter screen 7, maintenance door The opening of 15 handle easy access door 15, sealing gasket adds sealing effectiveness.
In the present embodiment, waterproof coating is all coated with vibrating mass 9 and gravity sensor 8, filter screen 7 uses stainless steel Filter screen 7;The cladding of waterproof coating adds the water resistance of vibrating mass 9 and gravity sensor 8, and stainless steel filtering net 7 is added Service life.
In the present embodiment, fixed seat includes overhead gage 10 and lower baffle plate 11, is constituted between overhead gage 10 and lower baffle plate 11 Chute is offered on free gap to realize the up-down vibration of filter screen 7, the inwall of lower baffle plate 11, the bottom of filter screen 7 is provided with The sliding block coordinated with chute;The setting of overhead gage 10 and lower baffle plate 11 is added opens on the stability of filter screen 7, the inwall of lower baffle plate 11 If chute can move up and down filter screen 7.
Above-mentioned circuit board uses PLC control boards, mainly receives the signal of gravity sensor, to control vibration The vibration of device, gravity sensor uses TBH-1 semiconductor-type weighing sensors, and vibrator uses CZ type vibrators.
In the use of the present invention, material is poured into reactor, stirred, then open discharging opening and Heated heating tape on discharging opening, it is to avoid because the change of temperature, causes the blocking of discharging opening, when bulk materials are filtered When net is blocked, weight can be carried out to filter screen, so that gravity sensor can be touched, then vibrator is started working, bulk materials meeting By the vibration movement with filter screen to the low one end of level height, it is to avoid the blocking of filter screen.
Finally it should be noted that:Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations;To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that:Its according to The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme, it all should cover among the claim of the present invention and the scope of specification.

Claims (6)

1. a kind of anticlogging reactor, including kettle, the top of the kettle are provided with to be provided with kettle cover, the kettle cover and stirred Mechanism is mixed, the rabbling mechanism includes power part, agitating shaft and axle envelope part, and one end of the agitating shaft passes through the kettle Lid stretches on the inside of the kettle, the agitating shaft and is provided with paddle, it is characterised in that:Install the lower section of the agitating shaft Have and gravity sensor is installed on the filter screen for adapting to kettle cross section, the marginal position of the filter screen, the gravity sensor Bottom is provided with vibrating mass, and the vibrating mass includes being provided with circuit board in fixed seat and vibrator, the vibrator, and The circuit board is electrically connected with the gravity sensor, and the bottom of the kettle is offered installs on discharging opening, the discharging opening There is hemispherical filtering backstop, the discharge outlet is coated with a heating tape.
2. a kind of anticlogging reactor according to claim 1, it is characterised in that:The kettle cover is cut with scissors with the kettle Connect, and cooperation in charging aperture, the charging aperture is further opened with the kettle cover and feed pipe, the marginal position of the kettle cover are installed Upper cooperation is provided with seal washer.
3. a kind of anticlogging reactor according to claim 1, it is characterised in that:The paddle is U-shaped paddle, The U-shaped paddle is installed on the top of the filter screen.
4. a kind of anticlogging reactor according to claim 1, it is characterised in that:The filter screen is interior with the kettle Wall is at an angle, and the inner wall of kettle offers access hole close to filter screen than relatively low position, and the access hole is hinged with inspection Repair and sealing gasket and handle are installed in door, the maintenance door.
5. a kind of anticlogging reactor according to claim 1, it is characterised in that:The vibrating mass and the gravity Waterproof coating is all coated with inductor, the filter screen uses stainless steel filtering net.
6. a kind of anticlogging reactor according to claim 1, it is characterised in that:The fixed seat include overhead gage and Lower baffle plate, constitutes to realize the free gap of filter screen up-down vibration between the overhead gage and lower baffle plate, the lower baffle plate Chute is offered on inwall, the bottom of the filter screen is provided with the sliding block coordinated with the chute.
CN201710568243.9A 2017-07-13 2017-07-13 A kind of anticlogging reaction kettle Active CN107185473B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710568243.9A CN107185473B (en) 2017-07-13 2017-07-13 A kind of anticlogging reaction kettle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710568243.9A CN107185473B (en) 2017-07-13 2017-07-13 A kind of anticlogging reaction kettle

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CN107185473A true CN107185473A (en) 2017-09-22
CN107185473B CN107185473B (en) 2019-09-03

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108837556A (en) * 2018-07-13 2018-11-20 六安市裕安区天缘中药材种植专业合作社 Water cape jasmine pigment extract equipment
CN109264759A (en) * 2018-09-10 2019-01-25 昆明理工大学 A kind of reacting furnace
CN109453877A (en) * 2018-09-21 2019-03-12 河南皓佳农业开发有限公司 A kind of corn milling device and its operating method
CN112473209A (en) * 2020-11-05 2021-03-12 湖南万家工贸实业有限公司 A cutting fluid clarifier filters jar for machining machine tool
CN112717864A (en) * 2020-12-09 2021-04-30 铜鼓县湘鸿化工有限公司 Prevent blockking up type sodium metabisulfite preparation reation kettle
CN112892448A (en) * 2021-01-21 2021-06-04 栾琦 Internet-based temperature-control efficient environment-friendly coating reaction kettle
CN112892049A (en) * 2021-01-25 2021-06-04 云和县新华涂料厂 Anti-blocking filtering device for efficient production of water-based paint

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Publication number Priority date Publication date Assignee Title
CN204365249U (en) * 2014-12-30 2015-06-03 河南鑫源食品有限公司 A kind of discharging opening of converted starch reactor
CN205288144U (en) * 2015-10-29 2016-06-08 池州市汉东农业有限公司 Fodder automatic -mixing device
CN205345848U (en) * 2015-12-29 2016-06-29 无锡顺鼎阿泰克科技有限公司 Oil fine coke divides material system
CN205947079U (en) * 2016-05-23 2017-02-15 安徽龙王山农业股份有限公司 Chinese chestnut is unloader for sheller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204365249U (en) * 2014-12-30 2015-06-03 河南鑫源食品有限公司 A kind of discharging opening of converted starch reactor
CN205288144U (en) * 2015-10-29 2016-06-08 池州市汉东农业有限公司 Fodder automatic -mixing device
CN205345848U (en) * 2015-12-29 2016-06-29 无锡顺鼎阿泰克科技有限公司 Oil fine coke divides material system
CN205947079U (en) * 2016-05-23 2017-02-15 安徽龙王山农业股份有限公司 Chinese chestnut is unloader for sheller

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108837556A (en) * 2018-07-13 2018-11-20 六安市裕安区天缘中药材种植专业合作社 Water cape jasmine pigment extract equipment
CN108837556B (en) * 2018-07-13 2023-08-22 六安市裕安区天缘中药材种植专业合作社 Gardenia pigment extraction equipment
CN109264759A (en) * 2018-09-10 2019-01-25 昆明理工大学 A kind of reacting furnace
CN109264759B (en) * 2018-09-10 2024-01-09 昆明理工大学 Reaction furnace
CN109453877A (en) * 2018-09-21 2019-03-12 河南皓佳农业开发有限公司 A kind of corn milling device and its operating method
CN112473209A (en) * 2020-11-05 2021-03-12 湖南万家工贸实业有限公司 A cutting fluid clarifier filters jar for machining machine tool
CN112717864A (en) * 2020-12-09 2021-04-30 铜鼓县湘鸿化工有限公司 Prevent blockking up type sodium metabisulfite preparation reation kettle
CN112892448A (en) * 2021-01-21 2021-06-04 栾琦 Internet-based temperature-control efficient environment-friendly coating reaction kettle
CN112892049A (en) * 2021-01-25 2021-06-04 云和县新华涂料厂 Anti-blocking filtering device for efficient production of water-based paint

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