CN110919887A - A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials - Google Patents

A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials Download PDF

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Publication number
CN110919887A
CN110919887A CN201911359591.0A CN201911359591A CN110919887A CN 110919887 A CN110919887 A CN 110919887A CN 201911359591 A CN201911359591 A CN 201911359591A CN 110919887 A CN110919887 A CN 110919887A
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CN
China
Prior art keywords
stirring
barrel
workbench
polyester resin
raw materials
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.)
Pending
Application number
CN201911359591.0A
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Chinese (zh)
Inventor
徐建红
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.)
Suzhou Southeast Sanitary Ware Co Ltd
Original Assignee
Suzhou Southeast Sanitary Ware Co Ltd
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 Suzhou Southeast Sanitary Ware Co Ltd filed Critical Suzhou Southeast Sanitary Ware Co Ltd
Priority to CN201911359591.0A priority Critical patent/CN110919887A/en
Publication of CN110919887A publication Critical patent/CN110919887A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/106Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary using rotary casings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/06Unsaturated polyesters

Abstract

The hydraulic system of the stirring device for the unsaturated polyester resin production bathroom product raw materials comprises a hydraulic motor, a hydraulic cylinder and a lifting arm, wherein the stirring system comprises a stirring motor, a gear box, a workbench, a stirring barrel, a stirring paddle and a barrel cover; the hydraulic motor is connected with a vertically arranged hydraulic cylinder, a piston rod is vertically upward, and the top of the piston rod is connected with the bottom surface of the lifting arm; the bottom surface of the end part of the lifting arm faces downwards and is fixedly connected with the top of the stirring paddle; the barrel cover is sleeved at the upper end of the stirring paddle, and the lower part of the stirring shaft below the barrel cover is fixedly provided with a stirring blade; the stirring motor is connected with the gear box; an output shaft extends upwards from the gear box, and a clamping groove is formed in a coupler at the top of the output shaft; the central department of agitator bottom has set firmly the fixture block, and the agitator is placed in the fixture block buckle draw-in groove when on the workstation, and the workstation is equipped with three running roller and supports agitator bottom periphery and roll. The stirring barrel rotates together with the internal raw materials during stirring, the stirring paddle is not moved, the stirring time is short, the stirring uniformity is good, and bubbles are not easy to be mixed.

Description

A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials
Technical Field
The invention relates to the field of bathroom product processing equipment, in particular to a stirring device for producing a bathroom product raw material by using unsaturated polyester resin.
Background
The existing sanitary ware products are mostly made of materials such as ceramics, hardware, glass fiber reinforced plastics, plastic, wood or glass, and have limitations in use characteristics, such as the sanitary ware products made of wood, plastic and hardware cannot adapt to the requirements of high temperature resistance and acid and alkali resistance, and the sanitary ware products made of glass, ceramics and glass fiber reinforced plastics have modeling and style antique boards, and in addition, the direct skin feeling effect of the various materials for people is poor.
In order to overcome the defects of the sanitary ware, the technical improvement of producing the sanitary ware by using unsaturated polyester resin, aluminum powder, an accelerant, a curing agent and the like as raw materials appears in the industry, so that the sanitary ware has better performance and quality, and the vision and the direct feeling of the skin are comfortable. However, in the production process, because the unsaturated polyester resin, the aluminum powder, the accelerator, the curing agent and the like are viscous after being mixed as raw materials, many problems can occur when the existing stirring device is used for stirring, such as long stirring time, poor stirring uniformity, easy mixing of bubbles, damage to a stirring paddle, inconvenience in discharging and the like.
In view of the above, the present inventors have made extensive studies on the above-mentioned drawbacks of the prior art, and have made this invention.
Disclosure of Invention
In order to solve the technical problem, the stirring device for producing the raw materials of the bathroom products by using the unsaturated polyester resin is provided, the stirring and mixing of the raw materials such as the unsaturated polyester resin of the relatively viscous bathroom products can be met, the stirring time is short, the stirring uniformity is good, and bubbles are not easy to mix.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a stirring device for producing bathroom product raw materials by using unsaturated polyester resin comprises a machine base, a hydraulic system, a stirring system and a distribution box; the hydraulic system is arranged on one side of the base, and the stirring system is arranged on the other side of the base; the hydraulic system comprises a hydraulic motor, a hydraulic cylinder and a lifting arm, and the stirring system comprises a stirring motor, a gear box, a workbench, a stirring barrel, a stirring paddle and a barrel cover; the hydraulic motor is arranged on one side edge of the base and is connected with a hydraulic cylinder barrel vertically arranged on the base on the inner side of the hydraulic motor, a piston rod in the cylinder barrel is vertically and upwards arranged, and the top of the piston rod is connected with the middle part of the bottom surface of the lifting arm; the lifting arm comprises a counterweight end extending outwards and an operation end extending inwards, and the bottom surface of the operation end is downwards fixedly connected with the top of the stirring shaft of the stirring paddle; the barrel cover is sleeved at the upper end part of the stirring shaft, and the lower part of the stirring shaft below the barrel cover is fixedly provided with a stirring blade; the stirring motor is arranged on the other side of the base and is connected with a gear box, the inner side of which is arranged in the middle of the base; an output shaft extends upwards from the gear box, a coupler is arranged at the top of the output shaft, and a clamping groove is formed in the coupler; a workbench is arranged above the gear box, a cavity is formed in the middle of the workbench, the output shaft upwards penetrates through the cavity in the workbench, and three rollers are uniformly arranged on the upper surface of the workbench at the periphery of the cavity; the center of the bottom of the stirring barrel is fixedly provided with a clamping block, the shape of the clamping block is consistent with that of the clamping groove in the coupler, the clamping block at the center of the stirring barrel can be clamped in the clamping groove of the coupler when the stirring barrel is placed on the workbench, and the three rollers are in contact with the periphery of the bottom of the stirring barrel.
Preferably, the stirring shaft is of a hollow pipe structure, the top end of the stirring shaft penetrates through the operation end and is connected with a vacuum-pumping pipe, and the vacuum-pumping pipe is connected with an external vacuum-pumping machine.
Preferably, a vacuum meter is further arranged on the vacuum-pumping pipe.
Preferably, the inner side of the hydraulic cylinder is also vertically provided with a support rod, and the top end of the support rod is fixedly connected with the bottom surface of the middle part of the lifting arm.
Preferably, the upper end of the cylinder barrel is fixedly provided with a clamping head, one side of the clamping head, which is close to the support rod, is vertically connected with a support tube, and the support tube is sleeved on the periphery of the support rod in a sliding manner.
According to the technical scheme, the hydraulic system and the stirring system are arranged on the base; the hydraulic system comprises a hydraulic motor, a hydraulic cylinder and a lifting arm, and the stirring system comprises a stirring motor, a gear box, a workbench, a stirring barrel, a stirring paddle and a barrel cover; the hydraulic motor is arranged on one side edge of the base and is connected with a hydraulic cylinder barrel vertically arranged on the base on the inner side of the hydraulic motor, a piston rod in the cylinder barrel is vertically and upwards arranged, and the top of the piston rod is connected with the middle part of the bottom surface of the lifting arm; the lifting arm comprises a counterweight end extending outwards and an operation end extending inwards, and the bottom surface of the operation end is downwards fixedly connected with a stirring shaft of the stirring paddle and the top of the barrel cover; the barrel cover is sleeved at the upper end part of the stirring shaft, and the lower part of the stirring shaft below the barrel cover is fixedly provided with a stirring blade; the stirring motor is arranged on the other side of the base and is connected with a gear box, the inner side of which is arranged in the middle of the base; an output shaft extends upwards from the gear box, a coupler is arranged at the top of the output shaft, and a clamping groove is formed in the coupler; a workbench is arranged above the gear box, a cavity is formed in the workbench, the output shaft upwards penetrates through the cavity in the workbench, and three rollers are uniformly arranged on the upper surface of the workbench at the periphery of the cavity; a clamping block is fixedly arranged at the center of the bottom of the stirring barrel, the shape of the clamping block is consistent with that of a clamping groove in the coupler, the clamping block at the center of the stirring barrel can be clamped in the clamping groove of the coupler when the stirring barrel is placed on the workbench, and the three rollers are in contact with the periphery of the bottom of the stirring barrel. When the stirring to raw materials such as bathroom product unsaturated polyester resin mixes, the lift arm by hydraulic system drives the bung lid on the agitator or open it, and put into the agitator or take out the stirring rake, mixing system's agitator motor and gear box drive agitator rotate on the workstation, the agitator rotates together with raw materials such as its inside unsaturated polyester resin, and the stirring rake is motionless, raw materials such as unsaturated polyester resin are under the effect of rotatory centrifugal force, can be in sufficient homogeneous mixing in the short time, can satisfy the stirring of raw materials such as comparatively thick bathroom product unsaturated polyester resin completely and mix, stirring uniformity is good, and be difficult to sneak into the bubble, the stirring rake also is difficult to damage simultaneously, and unload conveniently. Thereby the purposes of novel design, reasonable structure and good application effect are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a stirring device for producing sanitary materials from unsaturated polyester resin according to an embodiment of the present invention.
The corresponding part names indicated by the numbers in the figures:
1. the machine base 21, the hydraulic motor 22, the hydraulic cylinder 221, the cylinder barrel 222, the piston rod 23, the lifting arm 231, the counterweight end 232, the operation end 31, the stirring motor 32, the gear box 321, the output shaft 33, the workbench 34, the stirring barrel 35, the stirring paddle 351, the stirring blade 36, the barrel cover 4, the distribution box 5, the cavity 6, the roller 7, the vacuum pumping pipe 8, the vacuum gauge 9, the support rod 10, the chuck 11, the support pipe
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to examples and specific embodiments.
Examples are given.
As shown in fig. 1, a stirring device for raw materials of bathroom products produced by unsaturated polyester resin comprises a base 1, a hydraulic system, a stirring system and a distribution box 4; the hydraulic system is arranged on one side of the base 1, and the stirring system is arranged on the other side of the base 1; the hydraulic system comprises a hydraulic motor 21, a hydraulic cylinder 22 and a lifting arm 23, and the stirring system comprises a stirring motor 31, a gear box 32, a workbench 33, a stirring barrel 34, a stirring paddle 35 and a barrel cover 36; the hydraulic motor 21 is arranged on one side of the machine base 1 and is connected with a cylinder barrel 221 of a hydraulic cylinder 22 vertically arranged on the machine base 1 on the inner side of the hydraulic motor, a piston rod 222 in the cylinder barrel 221 is vertically and upwards arranged, and the top of the piston rod 222 is connected with the middle part of the bottom surface of the lifting arm 23; the lifting arm 23 comprises a counterweight end 231 extending outwards and an operation end 232 extending inwards, and the bottom surface of the operation end 232 is downwards fixedly connected with the top of the stirring shaft of the stirring paddle 35; the barrel cover 36 is sleeved at the upper end part of the stirring shaft, and the lower part of the stirring shaft below the barrel cover 36 is fixedly provided with a stirring blade 351; the stirring motor 31 is arranged on the other side edge of the base 1 and is connected with a gear box 32, the inner side of which is arranged in the middle of the base 1; an output shaft 321 extends upwards from the gear box 32, a coupler is arranged at the top of the output shaft 321, and a clamping groove is formed in the coupler; a workbench 33 is arranged above the gear box 32, a hollow is formed in the middle of the workbench 33, the output shaft 321 upwards penetrates through the hollow 5 on the workbench 33, and three rollers 6 are uniformly arranged on the upper surface of the workbench 33 at the periphery of the hollow 5; a clamping block is fixedly arranged at the center of the bottom of the stirring barrel 34, the shape of the clamping block is consistent with that of the clamping groove in the coupler, the clamping block at the center of the stirring barrel 34 can be clamped in the clamping groove of the coupler when the stirring barrel 34 is placed on the workbench 33, and the three rollers 6 are in contact with the periphery of the bottom of the stirring barrel 34.
The stirring shaft is of a hollow pipe structure, the top end of the stirring shaft penetrates through the operation end 232 and is connected with a vacuumizing pipe 7, and the vacuumizing pipe 7 is connected with an external vacuumizing machine, so that air doped in the raw materials in the stirring barrel 34 is pumped out during stirring, and the influence on the subsequent pouring effect in the mold due to the fact that a small steam pocket is hidden in the stirring barrel is avoided. The vacuum meter 8 is arranged on the vacuumizing pipe 7, so that the vacuum degree in the stirring barrel 34 can be detected at any time in the stirring process.
Simultaneously, the bracing piece 9 is still established immediately to pneumatic cylinder 22 inboard, bracing piece 9 top and lift arm 23 middle part bottom surface fixed connection to when agitator motor 31 is driving the rotatory stirring of agitator 34 through gear box 32, support arm 23 descends and its bottom and frame 1 contact, further plays the supporting role, with the stability that improves mixing system. In order to further enhance the supporting effect and protect the supporting rod 9, the upper end of the cylinder barrel 221 is fixedly provided with a clamping head 10, one side of the clamping head 10 close to the supporting rod 9 is vertically connected with a supporting tube 11, the supporting tube 11 is sleeved on the periphery of the supporting rod 9 in a sliding manner, and when the hydraulic cylinder 22 works to drive the lifting arm 23 to lift, the supporting rod 9 can slide up and down in the supporting tube 11.
In the embodiment, the stirring device is characterized in that a hydraulic system and a stirring system are arranged on the machine base 1; the hydraulic system comprises a hydraulic motor 21, a hydraulic cylinder 22 and a lifting arm 23, and the stirring system comprises a stirring motor 31, a gear box 32, a workbench 33, a stirring barrel 34, a stirring paddle 35 and a barrel cover 36; the hydraulic motor 21 is arranged on one side edge of the machine base 1 and is connected with a cylinder barrel 221 of a hydraulic cylinder 22 vertically arranged on the machine base 1 on the inner side of the hydraulic motor, a piston rod 222 in the cylinder barrel 221 is vertically and upwards arranged, and the top of the piston rod 222 is connected with the middle part of the bottom surface of the lifting arm 23; the lifting arm 23 comprises a counterweight end 231 extending outwards and an operation end 232 extending inwards, and the bottom surface of the operation end 232 is downwards fixedly connected with the stirring shaft of the stirring paddle 35 and the top of the barrel cover 36; the barrel cover 36 is sleeved at the upper end part of the stirring shaft, and the lower part of the stirring shaft below the barrel cover 36 is fixedly provided with a stirring blade 351; the stirring motor 31 is arranged on the other side of the base 1 and is connected with a gear box 32, the inner side of which is arranged in the middle of the base 1; an output shaft 321 extends upwards from the gear box 32, a coupler is arranged at the top of the output shaft 321, and a clamping groove is formed in the coupler; a workbench 33 is arranged above the gear box 32, a hollow is arranged on the workbench 33, the output shaft 321 upwards penetrates through the hollow on the workbench 33, and three rollers 6 are uniformly arranged on the upper surface of the workbench 33 at the periphery of the hollow; a clamping block is fixedly arranged at the center of the bottom of the stirring barrel 34, the shape of the clamping block is consistent with that of a clamping groove in the coupler, the clamping block at the center of the stirring barrel can be clamped in the clamping groove of the coupler when the stirring barrel 34 is placed on the workbench 33, and the three rollers 6 are in contact with the periphery of the bottom of the stirring barrel 34. When raw materials such as unsaturated polyester resin of a bathroom product are stirred and mixed, the lifting arm 23 of the hydraulic system drives the barrel cover 36 to cover or open the stirring barrel 34, the stirring paddle 35 is placed into or taken out of the stirring barrel 34, the lifting arm 23 descends to drive the barrel cover 36 to cover and seal the stirring barrel 34 during stirring, the support rod 9 assists in supporting, and meanwhile, an external vacuum-pumping machine is started to pump air in the stirring barrel 36, so that bubbles generated during stirring are broken. Meanwhile, the stirring motor 31 and the gear box 32 of the stirring system drive the stirring barrel 34 to rotate on the workbench 33, the stirring barrel 34 rotates together with the raw materials such as unsaturated polyester resin in the stirring barrel 34, the three rollers 6 support the periphery of the barrel bottom and rotate together, the stirring paddle 35 is not moved, the raw materials such as unsaturated polyester resin can be fully and uniformly mixed in a short time under the action of rotating centrifugal force, the hydraulic motor 21 of the hydraulic system is started, the hydraulic cylinder 22 works to drive the lifting arm 23, the stirring and mixing of the raw materials such as unsaturated polyester resin of a viscous bathroom product can be completely met, the stirring uniformity is good, bubbles are not easily mixed, and meanwhile, the stirring paddle is not easily damaged, and the unloading is convenient. Thereby the purposes of novel design, reasonable structure and good application effect are achieved.
The above description is only a preferred embodiment of the stirring device for unsaturated polyester resin raw material for producing sanitary products, and it should be noted that, for those skilled in the art, variations and modifications can be made without departing from the inventive concept of the present invention, and these are within the scope of the present invention.

Claims (5)

1. A stirring device for producing bathroom product raw materials by using unsaturated polyester resin is characterized by comprising a machine base, a hydraulic system, a stirring system and a distribution box; the hydraulic system is arranged on one side of the base, and the stirring system is arranged on the other side of the base; the hydraulic system comprises a hydraulic motor, a hydraulic cylinder and a lifting arm, and the stirring system comprises a stirring motor, a gear box, a workbench, a stirring barrel, a stirring paddle and a barrel cover; the hydraulic motor is arranged on one side edge of the base and is connected with a hydraulic cylinder barrel vertically arranged on the base on the inner side of the hydraulic motor, a piston rod in the cylinder barrel is vertically and upwards arranged, and the top of the piston rod is connected with the middle part of the bottom surface of the lifting arm; the lifting arm comprises a counterweight end extending outwards and an operation end extending inwards, and the bottom surface of the operation end is downwards fixedly connected with the top of the stirring shaft of the stirring paddle; the barrel cover is sleeved at the upper end part of the stirring shaft, and the lower part of the stirring shaft below the barrel cover is fixedly provided with a stirring blade; the stirring motor is arranged on the other side of the base and is connected with a gear box, the inner side of which is arranged in the middle of the base; an output shaft extends upwards from the gear box, a coupler is arranged at the top of the output shaft, and a clamping groove is formed in the coupler; a workbench is arranged above the gear box, a cavity is formed in the middle of the workbench, the output shaft upwards penetrates through the cavity in the workbench, and three rollers are uniformly arranged on the upper surface of the workbench at the periphery of the cavity; the center of the bottom of the stirring barrel is fixedly provided with a clamping block, the shape of the clamping block is consistent with that of the clamping groove in the coupler, the clamping block at the center of the stirring barrel can be clamped in the clamping groove of the coupler when the stirring barrel is placed on the workbench, and the three rollers are in contact with the periphery of the bottom of the stirring barrel.
2. The stirring device for unsaturated polyester resin production bathroom product raw material as claimed in claim 1, wherein the stirring shaft is of a hollow pipe structure, the top end of the stirring shaft passes through the operation end and is connected with a vacuum tube, and the vacuum tube is connected with an external vacuum machine.
3. The stirring device for unsaturated polyester resin production sanitary ware raw materials according to claim 2, wherein the vacuum tube is further provided with a vacuum gauge.
4. The stirring device for unsaturated polyester resin production bathroom product raw materials as claimed in claim 3, wherein a support rod is further erected inside the hydraulic cylinder, and the top end of the support rod is fixedly connected with the bottom surface of the middle part of the lifting arm.
5. The stirring device for unsaturated polyester resin production sanitary ware raw materials as claimed in claim 4, wherein a clamp is fixed on the upper end of the cylinder, a support tube is vertically connected to one side of the clamp close to the support rod, and the support tube is slidably sleeved on the periphery of the support rod.
CN201911359591.0A 2019-12-25 2019-12-25 A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials Pending CN110919887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911359591.0A CN110919887A (en) 2019-12-25 2019-12-25 A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911359591.0A CN110919887A (en) 2019-12-25 2019-12-25 A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials

Publications (1)

Publication Number Publication Date
CN110919887A true CN110919887A (en) 2020-03-27

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ID=69862047

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Application Number Title Priority Date Filing Date
CN201911359591.0A Pending CN110919887A (en) 2019-12-25 2019-12-25 A agitating unit that is used for unsaturated polyester resin production bathroom product raw materials

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112847889A (en) * 2020-12-31 2021-05-28 泰州市永宁亚克力制品有限公司 A agitated vessel for ya li ke raw materials is colored
CN113386319A (en) * 2021-06-24 2021-09-14 陕西弘大众为石油科技有限公司 Quick-repairing sealing adhesive and extrusion equipment thereof
CN114210238A (en) * 2021-12-02 2022-03-22 上海旭东海普南通药业有限公司 Fluorouracil refining method and device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112847889A (en) * 2020-12-31 2021-05-28 泰州市永宁亚克力制品有限公司 A agitated vessel for ya li ke raw materials is colored
CN112847889B (en) * 2020-12-31 2022-06-24 泰州市永宁亚克力制品有限公司 A agitated vessel for ya keli raw materials is colored
CN113386319A (en) * 2021-06-24 2021-09-14 陕西弘大众为石油科技有限公司 Quick-repairing sealing adhesive and extrusion equipment thereof
CN114210238A (en) * 2021-12-02 2022-03-22 上海旭东海普南通药业有限公司 Fluorouracil refining method and device

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