CN115318203A - High-pressure reaction kettle for high-viscosity medium - Google Patents
High-pressure reaction kettle for high-viscosity medium Download PDFInfo
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- CN115318203A CN115318203A CN202210868239.5A CN202210868239A CN115318203A CN 115318203 A CN115318203 A CN 115318203A CN 202210868239 A CN202210868239 A CN 202210868239A CN 115318203 A CN115318203 A CN 115318203A
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- highly viscous
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 77
- 238000005303 weighing Methods 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000725 suspension Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000036544 posture Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- 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
- B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
- B01F31/445—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing an oscillatory movement about an axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a high-pressure reaction kettle for high-viscosity media, which comprises a support frame, a kettle body, an axe cover and a stirring shaft, wherein the stirring shaft comprises a shaft rod and stirring paddles, the shaft rod is vertically arranged in the kettle body, and the stirring paddles are distributed on two sides of the lower end of the shaft rod; the stirring rake includes interior pole, outer pole and connecting rod, and the both ends of connecting rod articulate respectively in the tip of interior pole and outer pole, and the one end that interior pole deviates from the connecting rod articulates in the axostylus axostyle, and the one end that the outer pole deviates from the connecting rod articulates there is the sliding ball, and the inner wall of the cauldron body is provided with the wavy sliding tray that just supplies the sliding ball to slide. The invention has the following advantages and effects: through setting up the stirring rake that the automation carries out the wobbling in the rotatory process, break the dynamic balance of medium to the stirring of better realization medium makes high-pressure batch autoclave have the advantage that the stirring effect is good.
Description
Technical Field
The invention relates to the field of reaction kettles, in particular to a high-pressure reaction kettle for a high-viscosity medium.
Background
The broad understanding of the reaction kettle is that the reaction kettle is a container for physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized through the structural design and parameter configuration of the container. The high-pressure reaction kettle is a process device for carrying out high-temperature and high-pressure reaction, and has better safety particularly for inflammable, explosive or toxic reactants.
When a conventional high-pressure reaction kettle works, a stirring shaft in the conventional high-pressure reaction kettle is usually used for stirring a high-viscosity medium in the conventional high-pressure reaction kettle. However, when the conventional stirring shaft works, the structure of the stirring shaft is fixed, so that the stirring capacity of the stirring shaft is relatively poor and needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-pressure reaction kettle for a high-viscosity medium, which has the advantage of good stirring effect.
The technical purpose of the invention is realized by the following technical scheme: a high-pressure reaction kettle for high-viscosity media comprises a support frame, a kettle body, an axe cover and a stirring shaft, wherein the stirring shaft comprises a shaft rod and stirring paddles, the shaft rod is vertically arranged in the kettle body, and the stirring paddles are distributed on two sides of the lower end of the shaft rod; the stirring rake includes interior pole, outer pole and connecting rod, the both ends of connecting rod articulate respectively in interior pole with the tip of outer pole, interior pole deviates from the one end of connecting rod articulate in the axostylus axostyle, the outer pole deviates from the one end of connecting rod articulates there is the sliding ball, the inner wall of the cauldron body is provided with wavy and supplies the sliding tray that the sliding ball slided.
Through adopting above-mentioned technical scheme, when the (mixing) shaft during operation, the axostylus axostyle drives the stirring rake work, when the rotatory during operation of stirring rake, because interior pole, articulated each other between outer pole and the connecting rod, and through sliding ball and sliding tray sliding connection between outer pole and the cauldron body, simultaneously under the settlement of special shape sliding tray, the one end up-and-down reciprocating motion that the restriction outer pole deviates from the connecting rod, pole in will controlling this moment, shape between outer pole and the connecting rod changes constantly, break the dynamic balance of medium, thereby the better stirring of realization medium, make high-pressure batch autoclave have the advantage that the stirring effect is good.
The invention in a preferred example may be further configured to: the outer walls of the inner rod, the outer rod and the connecting rod are all rotatably connected with a stirring plate.
Through adopting above-mentioned technical scheme, through the stirring board that sets up the rotation type, in the motion process of interior pole, outer pole and connecting rod, under the striking of medium, the stirring board can swing automatically, further realizes the intensive mixing of medium, improves stirring effect.
The invention in a preferred example may be further configured to: the stirring plate is spirally arranged.
Through adopting above-mentioned technical scheme, through setting up spiral helicine stirring board, the flow of adaptation medium more improves the rotation rate of stirring board, realizes the intensive mixing of medium, improves stirring effect.
The invention in a preferred example may be further configured to: the support frame includes ring cover and a plurality of stabilizer blade, the ring cover is established the outer wall of the cauldron body, the stabilizer blade distribute in around the ring cover, the outer wall of the cauldron body is provided with a plurality of conflicts the supporting shoe of ring up end, the lower terminal surface of stabilizer blade is less than the lower terminal surface of the cauldron body.
By adopting the technical scheme, because high-pressure batch autoclave's overall structure is great to whole quality is heavier, consequently adopts the suspension type support frame, realizes high-pressure batch autoclave's suspension support, improves the security of high-pressure batch autoclave during operation.
The present invention in a preferred example may be further configured to: and a guide rod penetrating through the supporting block is vertically arranged on the upper end surface of the ring sleeve.
Through adopting above-mentioned technical scheme, realize spacing of cauldron body circumferential direction through setting up the guide bar, guarantee the stability of high-pressure batch autoclave during operation.
The invention in a preferred example may be further configured to: the outer wall of the guide rod is sleeved with a spring positioned between the ring sleeve and the supporting block.
Through adopting above-mentioned technical scheme, through addding the spring, realize the shock attenuation and the buffering of the cauldron body, further improve the security and the stability of high pressure batch autoclave during operation.
The present invention in a preferred example may be further configured to: and the upper end surface of the ring sleeve is provided with a weighing instrument positioned on the lower end surface of the supporting block.
Through adopting above-mentioned technical scheme, realize the automatic weighing of the cauldron body through setting up the weighing instrument, make things convenient for operating personnel to take notes the weight of the internal medium of cauldron.
The present invention in a preferred example may be further configured to: the surface of the weighing instrument is provided with a rubber pad.
Through adopting above-mentioned technical scheme, play certain shock attenuation and cushioning effect through setting up the rubber pad, improve the security and the stability of high pressure batch autoclave during operation.
In conclusion, the invention has the following beneficial effects:
1. the dynamic balance of the medium is broken through arranging the stirring paddle which automatically swings in the rotating process, so that the medium is stirred better, and the high-pressure reaction kettle has the advantage of good stirring effect;
2. through the arrangement of the rotary stirring plate, the stirring plate can automatically swing under the impact of the medium, so that the medium is further fully stirred, and the stirring effect is improved;
3. through adopting the suspension type support frame, realize high-pressure batch autoclave's suspension and support, improve the security of high-pressure batch autoclave during operation.
Drawings
FIG. 1 is a schematic view of the structure of embodiment 1;
FIG. 2 is a schematic view of the internal structure of the autoclave body of example 1;
FIG. 3 is a schematic view of the structure of a stirring blade of example 1;
FIG. 4 is a schematic view of the structure of embodiment 2;
FIG. 5 is a schematic diagram showing a change in the state of a stirring paddle.
Reference numerals are as follows: 1. a support frame; 11. sleeving a ring; 12. a leg; 13. a guide rod; 14. a spring; 15. a weighing instrument; 16. a rubber pad; 2. a kettle body; 21. a jacket; 22. a sliding groove; 23. a support block; 3. an axe cover; 31. a motor; 4. a stirring shaft; 41. a shaft lever; 42. a stirring paddle; 43. an inner rod; 44. an outer rod; 45. a connecting rod; 46. a stirring plate; 47. a sliding ball.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: as shown in fig. 1-5, an autoclave for high viscosity media comprises a support frame 1, an autoclave body 2, an axe cover 3 and a stirring shaft 4. The cauldron body 2 sets up on support frame 1, and axe cover 3 sets up in the open position of the cauldron body 2 upper end to the outer wall of the cauldron body 2 encircles and is provided with clamp cover 21, is used for heating the cauldron body 2.
As shown in fig. 1 and 2, the stirring shaft 4 includes a shaft rod 41 and a pair of stirring paddles 42, the shaft rod 41 is vertically disposed inside the kettle body 2, and the stirring paddles 42 are distributed on two sides of the lower end of the shaft rod 41. The upper end of the shaft 41 penetrates through the hatchet cover 3, and the hatchet cover 3 is provided with a motor 31 for controlling the rotation of the shaft 41.
When the high-pressure reaction kettle works, a medium is put in the kettle body 2, and then the medium in the kettle body 2 is heated by the jacket 21. Then, the motor 31 is used for driving the stirring shaft 4 to rotate so as to realize the stirring of the medium, thereby realizing the production and processing of the medium.
As shown in fig. 2 and 3, the stirring paddle 42 includes an inner rod 43, an outer rod 44, and a connecting rod 45, and both ends of the connecting rod 45 are respectively hinged to the ends of the inner rod 43 and the outer rod 44. The inner rod 43, the outer rod 44 and the connecting rod 45 are arranged in a U shape, and the outer walls of the inner rod 43, the outer rod 44 and the connecting rod 45 are rotatably connected with a stirring plate 46 arranged in a spiral shape.
As shown in fig. 2 and 3, one end of the inner rod 43 away from the connecting rod 45 is hinged to the shaft rod 41, one end of the outer rod 44 away from the connecting rod 45 is hinged to a sliding ball 47, the inner wall of the kettle body 2 is provided with a wavy sliding groove 22, and the sliding groove 22 allows the sliding ball 47 to slide according to a specified path. The inner wall of the kettle body 2 is further provided with a limiting plate (not shown in the figures) for limiting the sliding ball 47 to be separated from the sliding groove 22.
When the stirring paddle 42 rotates to work, because the inner rod 43, the outer rod 44 and the connecting rod 45 are hinged with each other, the outer rod 44 is connected with the kettle body 2 in a sliding mode through the sliding ball 47 and the sliding groove 22, and meanwhile, under the setting of the sliding groove 22 with the special shape, the up-and-down reciprocating motion of one end, away from the connecting rod 45, of the outer rod 44 is limited, at the moment, the shape among the inner rod 43, the outer rod 44 and the connecting rod 45 is controlled to change constantly, the dynamic balance of the medium is broken, and the stirring of the medium is achieved better.
And when interior pole 43, outer pole 44 and connecting rod 45 during operation, the medium will strike interior pole 43, outer pole 44 and the stirring board 46 on the connecting rod 45 and rotate, and stirring board 46 can swing voluntarily this moment, further realizes the intensive mixing of medium, improves the stirring effect.
It should be noted that: the rotation posture of the traditional stirring paddle is fixed and unchangeable in the rotation process. However, in the manner of fixing the rotation posture, when the high-viscosity medium is stirred, the motor needs more torque to overcome the rotation resistance of the stirring paddle brought by the high-viscosity medium, so that the power consumption of the motor is increased. And adopt this application special stirring rake and this stirring rake and the inner wall of the cauldron body 2 to be provided with corrugated sliding tray 22 guide down and rotate, go to be applied to the in-process of high viscosity medium stirring, can go to realize the stirring with four two postures of dialling very heavy, realize better power of unloading to reduce the high moment of torsion demand to the motor, reduce the energy loss of motor. Meanwhile, the dynamic balance of the medium can be broken, and the high-viscosity medium can be fully stirred.
Further, the present application also defines the inner wall of the kettle body 2 with the wave-shaped sliding grooves 22, the wave-shaped means that the kettle body necessarily has peaks and valleys and peaks (see fig. 2).
The hinge point between the inner lever 43 and the shaft 41 is designated as point a, which is in the same horizontal plane as the peak valley of the slide groove 22. The horizontal plane is vertically arranged with the inner wall of the kettle body 2.
The above-mentioned positional relationship implies the following technical information:
as shown in fig. 5, since the horizontal plane is between the point a and the peak and valley of the sliding groove 22, and the horizontal plane is perpendicular to the inner wall of the kettle body 2, according to the pythagorean theorem, and based on the present application, the kettle body 2 is a cylinder, the shaft rod 41 is connected to the inner wall of the kettle body 2, and this radius is unchanged.
It is possible to obtain: the distance between point a and the peak of the slide groove 22 will be greater than the distance between point a and the valley of the slide groove 22.
And the wave-shaped sliding groove 22 is arranged on the inner wall of the kettle body 2 in a surrounding way in the application. The device is provided with a plurality of peaks and valleys and a plurality of peaks and peaks. When the paddle rotates, the sliding ball 47 at one end of the outer rod 44 is stretched or shortened to change its shape during the reciprocating process of passing through a peak valley and a peak top in sequence. The stretching and shortening of the stirring rod is a process of dividing the high-viscosity medium, and then the rotating stirring plate 46 rotates under the action of the medium to realize stirring. It can be understood that: the stirring paddle of the application has three functions of revolution, rotation and division.
The revolution is that the stirring paddle rotates around the stirring shaft 4 under the action of the motor 31;
the rotation is the rotation of the stirring plate.
The separation is the process that the stirring paddle can be stretched or shortened to separate the high-viscosity medium.
As shown in fig. 1, the supporting frame 1 includes a ring sleeve 11 and a plurality of supporting legs 12, the ring sleeve 11 is sleeved on the outer wall of the jacket 21, and the supporting legs 12 are uniformly distributed around the ring sleeve 11 according to the circumferential direction of the ring sleeve 11. The outer wall of the jacket 21 is provided with a plurality of supporting blocks 23, and the supporting blocks 23 abut against the upper end face of the ring sleeve 11, so that the erection of the kettle body 2 is realized. Meanwhile, the lower end faces of the support legs 12 are lower than the lower end face of the kettle body 2, so that the kettle body 2 is suspended and supported.
Because high-pressure batch autoclave's overall structure is great to whole quality is heavier, consequently adopts suspension type support frame 1, realizes high-pressure batch autoclave's suspension support, security and the stability of during operation that can effectual high-pressure batch autoclave during operation.
As shown in fig. 1, a plurality of guide rods 13 are vertically disposed on an upper end surface of the loop 11, and the plurality of guide rods 13 vertically penetrate through the plurality of support blocks 23. The outer wall of the guide rod 13 is sleeved with a spring 14, and the spring 14 is positioned between the ring sleeve 11 and the supporting block 23.
When assembling the kettle body 2 and the support frame 1, the limiting of the circumferential direction of the kettle body 2 is realized by arranging the guide rod 13, and the stability of the high-pressure reaction kettle during working is ensured. Simultaneously, the spring 14 is additionally arranged at the connecting position of the kettle body 2 and the support frame 1, so that the shock absorption and the buffering in the working process of the kettle body 2 are realized, and the safety and the stability of the high-pressure reaction kettle during working are improved.
Example 2: as shown in fig. 4, an autoclave for a high viscosity medium is different from example 1 in that: the upper end face of the ring sleeve 11 is provided with a weighing instrument 15 positioned on the lower end face of the supporting block 23, and the surface of the weighing instrument 15 is provided with a rubber pad 16.
In the working process of the high-pressure reaction kettle, the automatic weighing of the kettle body 2 is realized by arranging the weighing instrument 15, so that an operator can conveniently record and control the weight of the medium in the kettle body 2. Meanwhile, the rubber pad 16 is additionally arranged at the contact position, so that a certain shock absorption and buffering effect is achieved, and the safety and the stability of the high-pressure reaction kettle during working are improved.
The specific embodiments are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading this specification, but only within the scope of the claims of the present invention.
Claims (8)
1. A high-pressure reactor for high-viscosity media is characterized in that: the stirring device comprises a support frame (1), a kettle body (2), an axe cover (3) and a stirring shaft (4), wherein the stirring shaft (4) comprises a shaft rod (41) and stirring paddles (42), the shaft rod (41) is vertically arranged in the kettle body (2), and the stirring paddles (42) are distributed on two sides of the lower end of the shaft rod (41);
stirring rake (42) are including interior pole (43), outer pole (44) and connecting rod (45), the both ends of connecting rod (45) articulate respectively in interior pole (43) with the tip of outer pole (44), interior pole (43) deviate from the one end of connecting rod (45) articulate in axostylus axostyle (41), outer pole (44) deviate from the one end of connecting rod (45) articulates there is sliding ball (47), the inner wall of the cauldron body (2) is provided with wavy and confession sliding tray (22) that sliding ball (47) slided.
2. An autoclave reactor for highly viscous media according to claim 1, characterized in that: the outer walls of the inner rod (43), the outer rod (44) and the connecting rod (45) are all rotatably connected with a stirring plate (46).
3. An autoclave reactor for highly viscous media according to claim 2, characterized in that: the stirring plate (46) is spirally arranged.
4. A high-pressure reaction vessel for highly viscous media according to claim 1, characterized in that: support frame (1) is including ring cover (11) and a plurality of stabilizer blade (12), ring cover (11) cover is located the outer wall of the cauldron body (2), stabilizer blade (12) distribute in around ring cover (11), the outer wall of the cauldron body (2) is provided with a plurality of conflicts supporting shoe (23) of ring cover (11) up end, the lower terminal surface of stabilizer blade (12) is less than the lower terminal surface of the cauldron body (2).
5. An autoclave reactor for highly viscous media according to claim 4, characterized in that: the upper end surface of the ring sleeve (11) is vertically provided with a guide rod (13) penetrating through the supporting block (23).
6. An autoclave reactor for highly viscous media according to claim 5, characterized in that: the outer wall of the guide rod (13) is sleeved with a spring (14) located between the ring sleeve (11) and the supporting block (23).
7. An autoclave reactor for highly viscous media according to claim 4, characterized in that: and a weighing instrument (15) positioned on the lower end surface of the supporting block (23) is arranged on the upper end surface of the ring sleeve (11).
8. An autoclave reactor for highly viscous media according to claim 7, characterized in that: the surface of the weighing instrument (15) is provided with a rubber pad (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868239.5A CN115318203B (en) | 2022-07-22 | 2022-07-22 | High-pressure reaction kettle for high-viscosity medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210868239.5A CN115318203B (en) | 2022-07-22 | 2022-07-22 | High-pressure reaction kettle for high-viscosity medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115318203A true CN115318203A (en) | 2022-11-11 |
| CN115318203B CN115318203B (en) | 2024-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210868239.5A Active CN115318203B (en) | 2022-07-22 | 2022-07-22 | High-pressure reaction kettle for high-viscosity medium |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207169705U (en) * | 2017-07-27 | 2018-04-03 | 上海邦高化学有限公司 | A kind of reactor |
| CN108295723A (en) * | 2018-04-11 | 2018-07-20 | 新昌县丽晶工业产品设计有限公司 | A kind of pharmacy blender rabbling mechanism and its assembly and application method |
| CN111686606A (en) * | 2020-07-29 | 2020-09-22 | 贾涛 | Preparation equipment of road marking coating |
| CN111790291A (en) * | 2020-07-09 | 2020-10-20 | 王荣 | Coating grinding and mixing device |
| CN111821880A (en) * | 2020-07-24 | 2020-10-27 | 林紫君 | Cover-type stirring tank for production of carbonated beverage |
-
2022
- 2022-07-22 CN CN202210868239.5A patent/CN115318203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207169705U (en) * | 2017-07-27 | 2018-04-03 | 上海邦高化学有限公司 | A kind of reactor |
| CN108295723A (en) * | 2018-04-11 | 2018-07-20 | 新昌县丽晶工业产品设计有限公司 | A kind of pharmacy blender rabbling mechanism and its assembly and application method |
| CN111790291A (en) * | 2020-07-09 | 2020-10-20 | 王荣 | Coating grinding and mixing device |
| CN111821880A (en) * | 2020-07-24 | 2020-10-27 | 林紫君 | Cover-type stirring tank for production of carbonated beverage |
| CN111686606A (en) * | 2020-07-29 | 2020-09-22 | 贾涛 | Preparation equipment of road marking coating |
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| CN115318203B (en) | 2024-03-05 |
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