PVC (polyvinyl chloride) film production equipment and process

Abstract

The invention provides PVC (polyvinyl chloride) film production equipment and process, which comprises a supporting bottom plate, a fan condenser is arranged on the surface of one side of the upper end of the supporting bottom plate, a fluid cooling pipe is arranged on the surface of the fan condenser, a circulating pump is arranged at the top end of the fan condenser, and a banburying chamber shell is arranged on one side of the fan condenser. A pressure device is arranged on the surface of the upper portion of the banburying chamber shell, and a shearing motor is arranged on the surface of one side of the banburying chamber shell, so that the problems that in the background technology, when temperature control is conducted on existing thin film raw materials in the banburying process, the temperature is generally controlled by arranging a cooling water channel in a pressing weight and introducing circulating water, and the temperature is too high are solved. The problems that temperature adjustment in a single direction is relatively slow, and when the mixing chamber is closed and pressure is applied, and the pressure in the mixing chamber is relatively high, a pressurizing oil cylinder above the mixing chamber retracts, so that the pressurizing effect is reduced are solved.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of PVC film production, and particularly relates to a PVC film production device and process. Background Art

[0002] In the production process of PVC (polyvinyl chloride) film, a mixer (closed plasticizer) plays a crucial role, mainly used for mixing, plasticizing and preliminary gelation of the PVC formula, providing uniform and well-plasticized materials for subsequent calendering, extrusion or blown film forming.

[0003] In the utility model patent application with the application number CN201720242829.1, the publication date of the application is November 28, 2017, and the name is "A Mixing Equipment for PVC Film Production", which includes a housing, a feed inlet and a discharge outlet. A processing chamber is provided in the housing, and a first rotor and a second rotor are arranged in parallel in the processing chamber. It is characterized in that the processing chamber is an inclined groove equivalent to the diameters of the first rotor and the second rotor. The axial directions of the first rotor and the second rotor are arranged along the length direction of the processing chamber. The included angle between the width direction of the processing chamber and the horizontal plane is an acute angle. The feed inlet is communicated with the upper opening of the processing chamber, the discharge outlet is communicated with the lower opening of the processing chamber, and the inner wall of the processing chamber corresponding to the first rotor has a first installation groove. A first inclined block corresponding to the first rotor is arranged in the first installation groove. The middle part of the first inclined block is hinged to the bottom of the first installation groove, so that one end of the first inclined block is inclined and arranged in the first installation groove. Through the inclined processing chamber, the material can not only be extruded and sheared between the first rotor and the second rotor, but also be extruded and sheared between the first rotor and the first inclined block of the processing chamber and between the second rotor and the second inclined block. During the extrusion and shearing process, the first inclined block and the second inclined block also automatically adjust the inclination angle, effectively increasing the processing area of the material.

[0004] During the specific implementation process, the inventor found the following defects: When controlling the temperature of the existing film raw materials during the mixing process, generally, a cooling water channel is arranged in the pressure weight to control the temperature by circulating water. However, the temperature adjustment in one direction is slow to return to the set temperature. And in the closed mixing chamber, when applying pressure, when the pressure inside the mixing chamber is relatively large, the pressurizing oil cylinder above it will retract, resulting in a decrease in the pressurizing effect. Summary of the Invention

[0005] 1. Technical problems to be solved by the invention: The present invention provides a PVC film production device and process, which are used to solve the problems in the above-mentioned background technology. When controlling the temperature of existing film raw materials during the kneading process, generally, a cooling water channel is arranged inside the pressure weight, and the temperature is controlled by circulating water. However, the temperature adjustment in one direction is relatively slow in returning to the set temperature. Moreover, in a closed kneading chamber, when applying pressure, when the pressure inside the kneading chamber is relatively large, it will cause the pressurizing oil cylinder above it to retract, resulting in a decrease in the pressurizing effect.

[0006] 2. Technical solution: To achieve the above object, the technical solution provided by the present invention is as follows: It includes a support bottom plate. On one side surface of the upper end of the support bottom plate, a fan condenser is arranged. On the surface of the fan condenser, a fluid cooling pipe is arranged. At the top of the fan condenser, a circulation pump is arranged. On one side of the fan condenser, a kneading chamber housing is arranged. On the upper surface of the kneading chamber housing, a pressurizing device is arranged. On one side surface of the kneading chamber housing, a shearing motor is arranged.

[0007] Further, the circulation pump is installed at the top of the fan condenser, and through the circulation pump, the fluid cooling pipe forms a circulation inside the fan condenser and on the surface of the kneading chamber housing. The pressurizing device is suspended above the upper surface of the kneading chamber housing.

[0008] Further, the kneading chamber housing includes an outer heat-insulating housing. On one side surface of the outer heat-insulating housing, a side vertical plate is fixedly connected. On the outer surface of the outer heat-insulating housing, a gear groove is arranged. Inside the gear groove, a gear set is arranged. On one side of the gear set, inside the outer heat-insulating housing, a two-edge rotor is arranged. At the cross-section of the outer heat-insulating housing, an upper flow channel groove is arranged. At the lower end of the upper flow channel groove, a return flow groove is arranged. Between the return flow groove and the upper flow channel groove, an isolation layer is arranged. On the surface of the isolation layer, a through-flow groove is arranged. On the surface of the isolation layer on one side of the through-flow groove, a vertical partition plate is arranged. At the bottom of the outer heat-insulating housing, a lower top bolt is arranged. On the inner wall of the outer heat-insulating housing, an electric heating plate is arranged.

[0009] Further, the return flow groove and the upper flow channel groove are isolated by the isolation layer, and the two ends of the fluid cooling pipe are respectively fixed on the surfaces of the return flow groove and the upper flow channel groove. The refrigerant inside the fluid cooling pipe enters the upper flow channel groove, the through-flow groove, and the return flow groove under the action of the circulation pump, and enters the inside of the fan condenser through the other end of the fluid cooling pipe.

[0010] Further, the gear set forms a transmission structure through the shearing motor, and drives the two two-edge rotors to form a rotating structure inside the outer heat-insulating housing through the gear set. The outer heat-insulating housing is heated by the electric heating plate inside it.

[0011] Further, the pressing device includes a suspended mounting plate fixed to one surface of the side vertical plate. A pressing oil cylinder is mounted on the upper surface of the suspended mounting plate, and a positioning motor is mounted on the lower surface of the suspended mounting plate. A spiral positioning rod is drivingly connected to the lower surface of the positioning motor. A sliding pressure plate is threadedly connected to the surface of the spiral positioning rod. A sliding weight is arranged between the upper part of the sliding pressure plate and the pressing oil cylinder. A feeding pipe is arranged above the sliding pressure plate.

[0012] Further, the sliding pressure plate forms a sliding structure above the outer heat preservation housing, is fitted and connected with the opening above the outer heat preservation housing, and a sealing gasket is arranged at the contact position with the outer heat preservation housing.

[0013] Further, when the pressing oil cylinder works to extend the sliding weight, the positioning motor works to drive the spiral positioning rod to rotate, so that the sliding weight drives the sliding pressure plate to move downward.

[0014] A production process of a PVC film production device, characterized in that: the process includes the following steps: Ⅰ. Uniformly mix raw rubber (natural rubber or synthetic rubber) with auxiliary materials such as carbon black, vulcanizing agent, accelerator, etc. through the feeding pipe and then put them into the inner part of the outer heat preservation housing; Ⅱ. The shearing motor drives the two-edge rotor to rotate to ensure that the fillers (such as carbon black, calcium carbonate) are uniformly dispersed, avoid agglomeration, and improve the product performance; Ⅲ. The electric heating plate is powered on to heat, heat the raw materials inside the outer heat preservation housing, and realize high-temperature mixing (such as tire tread rubber) or low-temperature mixing; Ⅳ. The pressing oil cylinder drives the sliding weight and the sliding pressure plate to move downward to press the material and the raw material to increase the pressure in the internal mixer; Ⅴ. After the kneading is completed, the lower plug is opened for discharging.

[0015] 3. Beneficial effects: Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects: The design of the present invention is reasonable. During the production process of PVC film, raw rubber (natural rubber or synthetic rubber) is evenly mixed with auxiliary materials such as carbon black, vulcanizing agent, and accelerator, and then put into the inner part of the outer heat-insulating shell. At the same time, the electric heating plate is started. On the one hand, the raw materials are heated by the electric heating plate. On the other hand, the shearing motor is started to drive the gear set and the two-edge rotor to rotate, so that the rubber material inside the outer heat-insulating shell is sheared, folded, and extruded between the two-edge rotor and the wall of the mixing chamber. At the same time, the pressure oil cylinder in the pressure device works to drive the sliding weight to move downward, and then drives the sliding pressing plate to descend, extruding and pressurizing the rubber material inside the outer heat-insulating shell. At the same time, the positioning motor works to drive the spiral positioning rod to rotate, and it rotates spirally on the surface of the sliding pressing plate. When the pressure inside the outer heat-insulating shell reaches the required pressure, the pressure oil cylinder stops working. At this time, due to the threaded connection between the spiral positioning rod and the sliding pressing plate, the problem of the sliding pressing plate being pushed back due to too high pressure inside the outer heat-insulating shell is avoided. When it is necessary to adjust the temperature inside the outer heat-insulating shell, the circulation pump and the fan condenser are started, so that the circulation pump drives the refrigerant inside the fluid cooling pipe into the upper flow channel groove. After passing through the annular upper flow channel groove, it enters the return groove through the through-flow groove and finally enters the fan condenser through the opening of another fluid cooling pipe on the surface of the through-flow groove to be cooled again. Due to the flow in two different directions up and down of the outer heat-insulating shell, on the one hand, the flow rate of the refrigerant inside the outer heat-insulating shell is increased, and on the other hand, the purpose of improving the temperature control efficiency is achieved through multi-faceted cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of the densification chamber shell of the present invention; Figure 3 for the present invention Figure 3 schematic diagram of A in; Figure 4 is a top view schematic diagram of the densification chamber shell of the present invention; Figure 5 is a schematic diagram of the two-edge rotor of the present invention; Figure 6 is a schematic diagram of the fluid cooling pipe of the present invention; Figure 7 is a schematic diagram of the pressure device of the present invention.

[0017] Reference numerals: 1. Support base plate; 2. Fan condenser; 3. Fluid cooling pipe; 4. Circulation pump; 5. Shell of the densification chamber; 501. Outer thermal insulation shell; 502. Side vertical plate; 503. Gear groove; 504. Gear set; 505. Two-edge rotor; 506. Upflow channel groove; 507. Return flow groove; 508. Isolation layer; 509. Flow-through channel; 510. Vertical partition; 511. Lower plug; 512. Electric heating plate; 6. Pressurizing device; 601. Suspended mounting plate; 602. Pressurizing oil cylinder; 603. Positioning motor; 604. Spiral positioning rod; 605. Sliding pressure plate; 606. Sliding weight; 607. Feeding pipe; 7. Shearing motor. Detailed implementation manners

[0018] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0021] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", "provided with", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment

[0022] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these specific embodiments.

[0023] A PVC film process, characterized in that: the process comprises the following steps: Ⅰ. Uniformly mix raw rubber (natural rubber or synthetic rubber) with auxiliary materials such as carbon black, vulcanizing agent, accelerator, etc. through a feeding pipe and then put them into the inner part of the outer heat-insulating shell; Ⅱ. The shearing motor drives the two-edge rotor to rotate to ensure the uniform dispersion of fillers (such as carbon black, calcium carbonate), avoid agglomeration, and improve the performance of the product; Ⅲ. The electric heating plate is powered on to heat the raw materials inside the outer heat-insulating shell to achieve high-temperature mixing (such as tire tread rubber) or low-temperature mixing; Ⅳ. The pressure cylinder drives the sliding weight and the sliding pressure plate to move downward to press the material and the raw material to increase the pressure in the internal mixer; Ⅴ. After the mixing is completed, the lower plug is opened for discharging.

[0024] Combined Figure 1-7 , an embodiment of the PVC film production equipment will be described; The PVC film production equipment includes a support bottom plate 1. On one side surface of the upper end of the support bottom plate 1, a fan condenser 2 is provided. On the surface of the fan condenser 2, a fluid cooling pipe 3 is provided. At the top of the fan condenser 2, a circulation pump 4 is provided. On one side of the fan condenser 2, an internal mixer housing 5 is provided. On the upper surface of the internal mixer housing 5, a pressurizing device 6 is provided. On one side surface of the internal mixer housing 5, a shearing motor 7 is provided. The circulation pump 4 is installed at the top of the fan condenser 2, and through the circulation pump 4, the fluid cooling pipe 3 forms a circulation inside the fan condenser 2 and on the surface of the internal mixer housing 5. The pressurizing device 6 is suspended above the upper surface of the internal mixer housing 5. This technical solution avoids the problem of the sliding pressure plate 605 being pushed back due to excessive pressure inside the outer heat-insulating shell 501 through the pressurizing device 6.

[0025] The hermetic refining chamber housing 5 includes an outer heat-insulating housing 501. One side surface of the outer heat-insulating housing 501 is fixedly connected with a side vertical plate 502. A gear groove 503 is arranged on the outer surface of the outer heat-insulating housing 501. A gear set 504 is arranged inside the gear groove 503. On one side of the gear set 504, a two-edge rotor 505 is arranged inside the outer heat-insulating housing 501. An upper flow channel groove 506 is arranged at the cross-section of the outer heat-insulating housing 501. A return flow groove 507 is arranged at the lower end of the upper flow channel groove 506. An isolation layer 508 is arranged between the return flow groove 507 and the upper flow channel groove 506. A flow-through groove 509 is arranged on the surface of the isolation layer 508. A vertical partition plate 510 is arranged on the surface of the isolation layer 508 on one side of the flow-through groove 509. A lower top bolt 511 is arranged at the bottom of the outer heat-insulating housing 501. An electric heating plate 512 is arranged on the inner wall of the outer heat-insulating housing 501; The return flow groove 507 and the upper flow channel groove 506 are isolated by the isolation layer 508. The two ends of the fluid cooling pipe 3 are respectively fixed on the surfaces of the return flow groove 507 and the upper flow channel groove 506. The refrigerant inside the fluid cooling pipe 3 enters the upper flow channel groove 506, the flow-through groove 509 and the return flow groove 507 under the action of the circulation pump 4, and enters the fan condenser 2 through the other opening of the fluid cooling pipe 3 on the surface of the return flow groove 507. The gear set 504 forms a transmission structure through the shear motor 7, and drives the two two-edge rotors 505 to form a rotating structure inside the outer heat-insulating housing 501 through the gear set 504. The outer heat-insulating housing 501 is heated by the electric heating plate 512 inside it.

[0026] In this embodiment, when it is necessary to adjust the temperature inside the outer heat-insulating housing 501, the circulation pump 4 and the fan condenser 2 are started, so that the circulation pump 4 drives the refrigerant inside the fluid cooling pipe 3 to enter the upper flow channel groove 506. After passing through the annular upper flow channel groove 506, it enters the return flow groove 507 through the flow-through groove 509, and finally enters the fan condenser 2 through the opening of another fluid cooling pipe 3 on the surface of the flow-through groove 509 for re-cooling. Due to the flow in two different directions up and down of the outer heat-insulating housing 501, on the one hand, the flow rate of the refrigerant inside the outer heat-insulating housing 501 is increased, and on the other hand, the purpose of improving the temperature control efficiency is achieved through multi-faceted cooling.

[0027] The pressure applying device 6 includes a suspended mounting plate 601 fixed to one side surface of the side vertical plate 502. A pressure applying oil cylinder 602 is mounted on the upper surface of the suspended mounting plate 601. A positioning motor 603 is mounted on the lower surface of the suspended mounting plate 601. A spiral positioning rod 604 is drivingly connected to the lower surface of the positioning motor 603. A sliding pressure plate 605 is threadedly connected to the surface of the spiral positioning rod 604. A sliding weight 606 is arranged between the upper part of the sliding pressure plate 605 and the pressure applying oil cylinder 602. A feeding pipe 607 is arranged above the sliding pressure plate 605. The sliding pressure plate 605 forms a sliding structure above the outer heat preservation housing 501, and is fitted and connected to the opening above the outer heat preservation housing 501, and a sealing gasket is arranged at the contact position with the outer heat preservation housing 501. When the pressure applying oil cylinder 602 works to extend the sliding weight 606, the positioning motor 603 works to drive the spiral positioning rod 604 to rotate, so that the sliding weight 606 drives the sliding pressure plate 605 to move downward.

[0028] In this embodiment, during the production process of the PVC film, the raw rubber (natural rubber or synthetic rubber) is uniformly mixed with auxiliary materials such as carbon black, vulcanizing agent, accelerator, etc. and then put into the inner part of the outer heat preservation housing. At the same time, the electric heating plate 512 is started. On the one hand, the raw materials are heated by the electric heating plate 512. On the other hand, by starting the shearing motor 7 to drive the gear set 504 and the two-edge rotor 505 to rotate, the rubber material inside the outer heat preservation housing 501 is sheared, folded, and extruded between the two-edge rotor 505 and the wall of the mixing chamber. At the same time, the pressure applying oil cylinder 602 in the pressure applying device 6 works to drive the sliding weight 606 to move downward, and then drives the sliding pressure plate 605 to descend, so as to extrude and apply pressure to the rubber material inside the outer heat preservation housing 501. At the same time, the positioning motor 603 works to drive the spiral positioning rod 604 to rotate, so that it rotates spirally on the surface of the sliding pressure plate 605. When the pressure inside the outer heat preservation housing 501 reaches the required pressure, the pressure applying oil cylinder 602 stops working. At this time, due to the threaded connection between the spiral positioning rod 604 and the sliding pressure plate 605, the problem of the sliding pressure plate 605 being pushed back due to the too high pressure inside the outer heat preservation housing 501 is avoided.

[0029] The above embodiments only represent a certain implementation manner of the present invention, and its description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention; therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A production equipment for PVC film production equipment, characterized in that: The invention comprises a supporting base plate (1), a fan condenser (2) is arranged on one side surface of the upper end of the supporting base plate (1), a fluid cooling pipe (3) is arranged on the surface of the fan condenser (2), a circulation pump (4) is arranged on the top of the fan condenser (2), a refining chamber shell (5) is arranged on one side of the fan condenser (2), a pressurizing device (6) is arranged on the upper surface of the refining chamber shell (5), and a shearing motor (7) is arranged on one side surface of the refining chamber shell (5).

2. The production equipment of a PVC film production equipment according to claim 1, characterized in that: The circulation pump (4) is installed at the top of the fan condenser (2), and the circulation pump (4) causes the fluid cooling pipe (3) to circulate inside the fan condenser (2) and on the surface of the refining chamber shell (5), and the pressurizing device (6) is suspended above the surface of the refining chamber shell (5).

3. The production equipment of a PVC film production equipment according to claim 2, characterized in that: The refining chamber shell (5) comprises an outer heat-insulating shell (501), a side vertical plate (502) is fixedly connected to a surface of one side of the outer heat-insulating shell (501), a gear groove (503) is provided on the outer surface of the outer heat-insulating shell (501), a gear set (504) is provided inside the gear groove (503), a two-edge rotor (505) is provided on one side of the gear set (504) inside the outer heat-insulating shell (501), and an upper flow channel groove (506) is provided at the cross section of the outer heat-insulating shell (501). A reflow groove (507) is provided at the lower end of the upper flow channel groove (506), an isolation layer (508) is provided between the reflow groove (507) and the upper flow channel groove (506), a through-flow groove (509) is provided on the surface of the isolation layer (508), a vertical partition plate (510) is provided on one side of the through-flow groove (509) on the surface of the isolation layer (508), a lower top bolt (511) is provided at the bottom of the outer thermal insulation shell (501), and an electric heating plate (512) is provided on the inner wall of the outer thermal insulation shell (501).

4. The production equipment of a PVC film production equipment according to claim 3, characterized in that: The reflux groove (507) and the upper flow channel groove (506) are isolated by an isolation layer (508), and the two ends of the fluid cooling tube (3) are respectively fixed to the surface of the reflux groove (507) and the upper flow channel groove (506), and the refrigerant inside the fluid cooling tube (3) enters the upper flow channel groove (506), the through flow groove (509) and the reflux groove (507) under the action of the circulation pump (4), and enters the fan condenser (2) through the other end of the fluid cooling tube (3).

5. The production equipment of a PVC film production equipment according to claim 4, characterized in that: The gear set (504) forms a transmission structure through the shearing motor (7), and the gear set (504) drives two two-edge rotors (505) to form a rotating structure inside the outer heat-insulating shell (501). The outer heat-insulating shell (501) is heated by the electric heating plate (512) inside it.

6. The production equipment of a PVC film production equipment according to claim 1, characterized in that: The pressurizing device (6) comprises a suspended mounting plate (601) fixed to a side surface of a side vertical plate (502); a pressurizing oil cylinder (602) is mounted on the upper surface of the suspended mounting plate (601); a positioning motor (603) is mounted on the lower surface of the suspended mounting plate (601); a spiral positioning rod (604) is drivingly connected to the lower surface of the positioning motor (603); a sliding pressure plate (605) is threadedly connected to the surface of the spiral positioning rod (604); a sliding pressure weight (606) is arranged between the upper surface of the sliding pressure plate (605) and the pressurizing oil cylinder (602); and a feeding pipe (607) is arranged above the sliding pressure plate (605).

7. The production equipment of a PVC film production equipment according to claim 6, characterized in that: The sliding pressure plate (605) forms a sliding structure above the outer heat-insulating shell (501), and is engaged and connected with an opening above the outer heat-insulating shell (501), and a sealing gasket is provided at a position in contact with the outer heat-insulating shell (501).

8. A PVC film production equipment according to claim 7, characterized in that: The pressurized oil cylinder (602) works to extend the sliding pressure weight (606) and at the same time the positioning motor (603) works to drive the spiral positioning rod (604) to rotate, so that the sliding pressure weight (606) drives the sliding pressure plate (605) to move downward.

9. A production process for a PVC film, characterized in that: The process includes the following steps: Ⅰ. Evenly mix the raw rubber (natural rubber or synthetic rubber) with carbon black, vulcanizer, accelerator and other auxiliary materials through the feeding pipe and then feed them into the outer insulation shell; Ⅱ. The shearing motor drives the two-edge rotors to rotate to ensure that the fillers (such as carbon black, calcium carbonate) are evenly dispersed, avoiding agglomeration and improving the performance of the product; III. The electric heating plate is powered on to heat the raw materials inside the external insulation shell to achieve high-temperature mixing (such as tire tread rubber) or low-temperature mixing, through; IV. The pressurized oil cylinder drives the sliding pressure weight and the sliding pressure plate to move downward, pressing the materials and raw materials to increase the pressure in the mixing chamber; Ⅴ. After the dense training is completed, open the lower bolt to unload the material.

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