A vacuum device for silicone rubber production

Abstract

The utility model discloses a vacuum pumping device for silicone rubber production, which belongs to the technical field of silicone rubber production, and comprises a tank body, a top cover is provided at the top of the tank body, a heating frame is provided on the outside of the tank body, and a plurality of heating wires distributed in a circular array are provided in the heating frame, a support assembly is provided on the side wall of the tank body, a mounting box is fixedly installed on the top of the top cover, a stirring assembly is provided in the tank body, an air pressure detector is provided on the top of the top cover, a support plate is fixedly installed on the side wall of the heating frame, and a vacuum pump and a filter frame are fixedly installed on the top of the support plate. The utility model plays a role in filtering the odor in the gas extracted by the vacuum pump through the setting of the filter assembly, the filter plate is made of corresponding materials, such as activated carbon, etc., the filter plate is fixed by the limit block and the limit groove provided in the filter frame, which is convenient for the staff to replace, which is conducive to maintaining the filtering effect of the equipment and reducing the pollution of the equipment to the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone rubber production, and more specifically to a vacuum pumping device for silicone rubber production. Background Art

[0002] Silicone rubber refers to a rubber whose main chain is composed of alternating silicon and oxygen atoms, and the silicon atom is usually connected to two organic groups. Ordinary silicone rubber is mainly composed of silicon-oxygen chain segments containing methyl and a small amount of vinyl. Silicone rubber is a basic rubber product, a type of rubber product developed on the basis of synthetic rubber. Silicone rubber has the characteristics of high temperature resistance, low temperature resistance, oxidation resistance, corrosion resistance, and aging resistance. It is widely used in medical, food, electronics, automobiles, construction and other fields. One of the steps in the silicone rubber production process needs to be operated under vacuum to remove bubbles.

[0003] The patent with application number 202123208790.7 discloses a vacuum pumping device for vulcanized silicone rubber production, including a bottom frame, a top frame support, a top frame, a vacuum box and a supporting partition. The bottom frame is provided with an integrally connected groove convex wall, and the vacuum box is placed in the box groove enclosed by the groove convex wall. The bottom frame is connected to the top frame support arranged above the vacuum box through the top frame support. The top cover of the vacuum box is provided with a box top cover, and a cylinder is supported and installed on the top frame. The piston shaft of the cylinder is extended to the bottom of the top frame and connected to the box top cover. A closed convex cover shell is installed on the top of the box top cover, and a connecting channel is provided on the box top cover in the convex cover shell. The inside of the convex cover shell is also provided with a cover shell internal motor. The utility model can quickly realize vacuum removal of bubbles by stirring and heating the head end, and the motor is arranged in the cover, which is closed by a gasket, and has good sealing performance.

[0004] With regard to the above-mentioned related technologies, vacuuming and bubble removal can be quickly achieved by stirring and heating the head end, thereby improving the processing efficiency of the equipment. However, silicone rubber will produce a pungent odor when stirred and heated. The gas in the vacuum box is directly discharged into the air through a vacuum pump, which may cause environmental pollution and may affect the working conditions of the staff. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a vacuum pumping device for silicone rubber production, which adopts the following technical solutions:

[0006] A vacuum device for silicone rubber production, comprising a tank body, a top cover is provided at the top of the tank body, a heating frame is provided on the outside of the tank body, and a plurality of heating wires distributed in a ring array are provided in the heating frame, a support assembly is provided on the side wall of the tank body, a mounting box is fixedly installed on the top of the top cover, a stirring assembly is provided in the tank body, an air pressure detector is provided on the top of the top cover, a support plate is fixedly installed on the side wall of the heating frame, and a vacuum pump and a filter frame are fixedly installed on the top of the support plate, a second pipeline is connected between the vacuum pump and the top cover, and a first pipeline is provided between the vacuum pump and the filter frame, a filter assembly is provided in the filter frame, an air outlet pipe is provided on the side of the filter frame away from the tank body, a discharge pipe is fixedly installed on the bottom end of the tank body, and a control valve is provided on the side wall of the discharge pipe;

[0007] A lifting ring is provided above the top cover, and three connecting rods distributed in a circular array are fixedly installed between the lifting ring and the top of the top cover, two symmetrically distributed positioning rods are fixedly installed at the bottom of the top cover, and a positioning groove matching the positioning rod is opened at the top of the tank body.

[0008] By adopting the above technical scheme, when the equipment is used, the staff disengages the top cover from the tank body through the cooperation of the lifting device of the prior art through the lifting ring and the connecting rod, and then places the silicone rubber in the tank body. After the silicone rubber is placed, the top cover and the tank body are fitted together by the lifting device, and then the silicone rubber in the tank body is heated by the heating wire. At the same time, the silicone rubber is stirred by the stirring component, which is beneficial to improve the uniformity of heating of the silicone rubber, and then it is beneficial to improve the discharge of bubbles. Subsequently, the vacuum pump is operated to extract the air in the tank body through the second pipe, and the air enters the filter frame through the first pipe. The filter frame is provided with a filter component to filter the odor in the air. The filtered air is discharged through the air outlet pipe, which is beneficial to reduce the pollution of the equipment to the environment. An air pressure detector is provided on the top of the top cover to detect the air pressure strength in the tank body. When the silicone rubber is processed, it can be connected to the discharge pipe installed at the bottom of the tank body through the existing extraction device to extract the material.

[0009] Furthermore, the support assembly includes a support ring fixedly mounted on the side wall of the heating frame, three symmetrically distributed support columns are fixedly mounted on the bottom end of the support ring, and bottom ends of the support columns are fixedly mounted with bottom plates.

[0010] By adopting the above technical solution, the side wall of the tank body plays a role of supporting and stabilizing the tank body through the arrangement of the support ring, the support column and the bottom plate, so as to facilitate the subsequent stable placement of the tank body.

[0011] Furthermore, the stirring assembly includes a rotating rod rotatably mounted on the inner wall of the top cover, the lower side wall of the rotating rod is fixedly sleeved with a stirring spiral blade, a plurality of scrapers distributed in a ring array are slidably mounted on the inner wall of the tank body, two symmetrically distributed stirring rods are fixedly mounted between the scrapers and the side walls of the rotating rod, a stirring frame is fixedly mounted between the two stirring rods in the same group, a reduction motor is fixedly mounted in the mounting box, the top end of the rotating rod passes through the top cover and extends into the mounting box, and one end of the rotating rod passes through the mounting box and is fixedly connected to the end of the output shaft of the reduction motor.

[0012] By adopting the above technical scheme, when the silicone rubber is injected into the tank body and heated, the reduction motor drives the rotating rod to rotate, and the rotating rod drives the stirring rod, stirring frame, scraper and stirring spiral blade to rotate synchronously, so as to play the role of stirring the silicone rubber. The stirring spiral blade not only plays the role of stirring the silicone rubber, but also can make the strange rubber at the bottom of the tank body surge upward, which is beneficial to improve the stirring efficiency of the equipment. The scraper not only plays the role of stirring the silicone rubber, but also can play the role of cleaning the inner wall of the tank body.

[0013] Furthermore, the filter assembly includes a plurality of filter plates slidably installed in the filter frame, limit blocks are fixedly installed on both sides of the filter plates, the inner wall of the filter frame is provided with limit grooves matching the limit blocks on the same side, the top of the filter frame is hinged with a cover plate, and the bottom of the cover plate is fixedly installed with a sealing gasket.

[0014] By adopting the above technical scheme, the air in the tank is extracted through the second pipe by operating the vacuum pump, and the air enters the filter frame through the first pipe. The arrangement of multiple filter plates in the filter frame plays a role in filtering odors in the air, and the filter plates are made of different materials, which is convenient for filtering impurities in the air, such as activated carbon, etc., and the filter plates are fixed by the limit blocks and the limit grooves provided on the inner wall of the filter frame. The cooperation of the limit blocks and the limit grooves makes it convenient for staff to replace the filter plates, which is beneficial to maintaining the filtering effect of the equipment.

[0015] Furthermore, two symmetrically distributed stabilizing plates are fixedly installed on the side walls of the top cover, and the cross-sections of the two stabilizing plates are both inverted "L" shapes, and multiple rollers distributed in a linear array are rotatably installed on the inner sides of the vertical sections of the two stabilizing plates, and the rollers are in contact with the outer side of the heating frame.

[0016] By adopting the above technical solution, when the staff lifts the top cover through the existing lifting device, the top cover moves synchronously with the stabilizing plate, and the roller rotatably installed on the inner side of the stabilizing plate slides on the outer side of the heating frame. Through the cooperation of the stabilizing plate and the roller, the top cover is convenient for stably lifting and lowering with the rotating rod and other structures, which helps to avoid the top cover shaking around and being damaged when it is lifted.

[0017] Furthermore, the fixed sleeve outside the heating frame is provided with a heat insulating layer, and the fixed sleeve outside the tank body is provided with a heat conducting layer, and the heat conducting layer is located inside the heating frame.

[0018] By adopting the above technical solution, a heat insulating layer is provided on the outside of the heating frame to achieve a heat preservation effect, and a heat conducting layer is provided inside the tank body to facilitate the introduction of heat into the tank body.

[0019] Furthermore, two symmetrically distributed support blocks are fixedly installed on the outer side of the heating frame, and the top ends of the two support blocks are fixedly connected to the bottom end of the support plate.

[0020] By adopting the above technical solution, a support block is provided between the support plate and the heating frame, which plays a role in supporting and stabilizing the vacuum pump and the filter frame.

[0021] In summary, the utility model includes the following beneficial technical effects:

[0022] (1) In the present invention, the filter assembly is provided to filter out odor in the gas extracted by the vacuum pump. The filter plate is made of a corresponding material, such as activated carbon, and the filter plate is fixed by a limit block and a limit groove provided in the filter frame, which is convenient for staff to replace, is beneficial to maintaining the filtering effect of the equipment, and reduces the pollution of the equipment to the environment.

[0023] (2) In the present invention, the cooperation between the stirring assembly and the heating wire can heat and stir the silicone rubber, which is beneficial to improving the efficiency of discharging bubbles in the silicone rubber.

[0024] (3) In the utility model, through the cooperation of the lifting ring and the connecting rod, it is convenient for the staff to use the lifting equipment in the prior art to lift the top cover and the stirring assembly out of the tank body, which is convenient for the staff to clean later. In addition, the side wall of the top cover is provided with a stabilizing plate. When the top cover is raised or lowered, the roller installed on the inner wall of the stabilizing plate contacts and slides with the outer side of the heating frame. Through the cooperation of the stabilizing plate and the roller, it is helpful to maintain the stability of the lifting of the top cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a vacuum pumping device for silicone rubber production;

[0026] Figure 2 It is a cross-sectional view of the utility model;

[0027] Figure 3 For this utility model Figure 2 A magnified view of middle;

[0028] Figure 4 It is an exploded view of the stirring assembly in the utility model;

[0029] Figure 5It is an expanded view of the stabilizing plate and the roller in the utility model;

[0030] Figure 6 It is an expanded view of the outer structure of the tank body in the utility model.

[0031] Description of the numbers in the figure:

[0032] 1. Tank body; 2. Heating frame; 3. Insulation layer; 4. Support ring; 5. Support column; 6. Bottom plate; 7. Stabilizing plate; 8. Support plate; 9. Vacuum pump; 10. Filter frame; 11. Filter plate; 12. First pipeline; 13. Second pipeline; 14. Connecting rod; 15. Lifting ring; 16. Mounting box; 17. Top cover; 18. Reducer motor; 19. Rotating rod; 20. Stirring spiral blade; 21. Scraper; 22. Stirring rod; 23. Stirring frame; 24. Heating wire; 25. Positioning rod; 26. Roller. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The following is combined with Figure 1-6 The utility model is described in further detail.

[0037] See also Figure 1-6 A vacuum pumping device for silicone rubber production includes a tank body 1, a top cover 17 is provided on the top of the tank body 1, a heating frame 2 is provided on the outside of the tank body 1, and a plurality of heating wires 24 distributed in a ring array are provided in the heating frame 2, and a support assembly is provided on the side wall of the tank body 1, and the support assembly includes a support ring 4 fixedly mounted on the side wall of the heating frame 2, and three symmetrically distributed support columns 5 are fixedly installed on the bottom end of the support ring 4, and a bottom plate 6 is fixedly installed on the bottom end of the support column 5. The side wall of the tank body 1 plays a role in supporting and stabilizing the tank body 1 through the arrangement of the support ring 4, the support column 5 and the bottom plate 6, so as to facilitate the subsequent stable placement of the tank body 1.

[0038] A lifting ring 15 is provided above the top cover 17, and three connecting rods 14 distributed in a circular array are fixedly installed between the lifting ring 15 and the top of the top cover 17, two symmetrically distributed positioning rods 25 are fixedly installed at the bottom of the top cover 17, and a positioning groove matching the positioning rod 25 is opened at the top of the tank body 1. Two symmetrically distributed stabilizing plates 7 are fixedly installed on the side wall of the top cover 17, and the cross-sections of the two stabilizing plates 7 are both inverted "L" shapes, and multiple rollers 26 distributed in a linear array are rotatably installed on the inner sides of the vertical sections of the two stabilizing plates 7, and the rollers 26 are in contact with the outer side of the heating frame 2. When the equipment is used, the staff By means of the lifting device of the prior art, through the cooperation of the lifting ring 15 and the connecting rod 14, the top cover 17 is disengaged from the tank body 1, and then the silicone rubber is placed in the tank body 1. After the silicone rubber is placed, the top cover 17 and the tank body 1 are fitted together by the lifting device. When the top cover 17 is raised or lowered, the top cover 17 moves synchronously with the stabilizing plate 7, and the roller 26 rotatably installed on the inner side of the stabilizing plate 7 slides on the outer side of the heating frame 2. Through the cooperation of the stabilizing plate 7 and the roller 26, the top cover 17 is convenient for stably lifting and lowering with the rotating rod 19 and other structures, which helps to avoid the phenomenon of the top cover 17 shaking around and being damaged when it is lifted.

[0039] A mounting box 16 is fixedly installed on the top of the top cover 17, and a stirring assembly is arranged in the tank body 1. The stirring assembly includes a rotating rod 19 rotatably installed on the inner wall of the top of the top cover 17, and a stirring spiral blade 20 is fixedly sleeved on the side wall of the lower section of the rotating rod 19. A plurality of scrapers 21 distributed in a circular array are slidably installed on the inner wall of the tank body 1, and two symmetrically distributed stirring rods 22 are fixedly installed between the scrapers 21 and the side walls of the rotating rod 19, and a stirring frame 23 is fixedly installed between the two stirring rods 22 in the same group, and a reduction motor 18 is fixedly installed in the mounting box 16. The top end of the rotating rod 19 passes through the top cover 17 and extends into the mounting box 16, and one end of the rotating rod 19 passes through the mounting box 16 and is fixedly connected to the end of the output shaft of the reduction motor 18. The outer fixed sleeve of the heat frame 2 is provided with a heat insulation layer 3, and the outer fixed sleeve of the tank body 1 is provided with a heat conductive layer, which is located in the heating frame 2. When the silicone rubber is injected into the tank body 1, heat is generated by the heating wire 24, and the heat is transferred to the inside of the tank body 1 through the heat conductive layer. Then, the rotating rod 19 is driven to rotate by the reduction motor 18, and the rotating rod 19 drives the stirring rod 22, the stirring frame 23, the scraper 21 and the stirring spiral blade 20 to rotate synchronously, which can play the role of stirring the silicone rubber. The stirring spiral blade 20 not only plays the role of stirring the silicone rubber, but also can make the strange rubber at the bottom of the tank body 1 surge upward, which is beneficial to improving the stirring efficiency of the equipment. The scraper 21 not only plays the role of stirring the silicone rubber, but also can play the role of cleaning the inner wall of the tank body 1.

[0040] An air pressure detector is provided on the top of the top cover 17, a support plate 8 is fixedly installed on the side wall of the heating frame 2, and a vacuum pump 9 and a filter frame 10 are fixedly installed on the top of the support plate 8, a second pipe 13 is connected between the vacuum pump 9 and the top cover 17, and a first pipe 12 is provided between the vacuum pump 9 and the filter frame 10, a filter assembly is provided in the filter frame 10, and the filter assembly includes a plurality of filter plates 11 slidably installed in the filter frame 10, and limit blocks are fixedly installed on both sides of the filter plate 11, and a limit groove matching the limit block on the same side is provided on the inner wall of the filter frame 10, a cover plate is hinged on the top of the filter frame 10, and a sealing gasket is fixedly installed on the bottom end of the cover plate, and the air in the tank body 1 is extracted through the second pipe 13 by the operation of the vacuum pump 9, and the air passes through the first pipe The passage 12 enters the filter frame 10. The arrangement of multiple filter plates 11 in the filter frame 10 plays a role in filtering odors in the air. The filter plates 11 are made of different materials, which is convenient for filtering impurities in the air, such as activated carbon, and the filter plates 11 are fixed by a limiting block and a limiting groove provided on the inner wall of the filter frame 10. The cooperation of the limiting block and the limiting groove is convenient for the staff to replace the filter plates 11, which is beneficial to maintaining the filtering effect of the equipment. An air outlet pipe is provided on the side of the filter frame 10 away from the tank body 1, a discharge pipe is fixedly installed at the bottom end of the tank body 1, and a control valve is provided on the side wall of the discharge pipe. The filtered gas is discharged through the air outlet pipe. When the silicone rubber processing is completed, the existing extraction device can be connected to the discharge pipe installed at the bottom end of the tank body 1 for extraction.

[0041] Two symmetrically distributed support blocks are fixedly installed on the outside of the heating frame 2. The top ends of the two support blocks are fixedly connected to the bottom end of the support plate 8. A support block is provided between the support plate 8 and the heating frame 2 to support and stabilize the vacuum pump 9 and the filter frame 10.

[0042] The implementation principle of the embodiment of the utility model is as follows: when the equipment is used, the staff disengages the top cover 17 from the tank body 1 through the cooperation of the lifting ring 15 and the connecting rod 14 through the lifting device of the prior art, and then places the silicone rubber in the tank body 1. After the silicone rubber is placed, the top cover 17 and the tank body 1 are fitted together by the lifting device, and then the silicone rubber in the tank body 1 is heated by the heating wire 24. At the same time, the silicone rubber is stirred by the stirring component, which is beneficial to improve the uniformity of the heating of the silicone rubber, and then it is beneficial to improve the discharge of bubbles. Then, the vacuum pump 9 is operated to extract the air in the tank body 1 through the second pipe 13, and the air enters the filter frame 10 through the first pipe 12. The filter frame 10 is provided with a filter component to filter the odor in the air. The filtered air is discharged through the air outlet pipe, which is beneficial to reduce the pollution of the equipment to the environment. An air pressure detector is provided on the top of the top cover 17 to detect the air pressure strength in the tank body 1. When the silicone rubber is processed, it can be connected to the discharge pipe installed at the bottom of the tank body 1 through the existing extraction device to extract the material.

[0043] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A vacuum pumping device for silicone rubber production, comprising a tank body (1), characterized in that: The top of the tank body (1) is provided with a top cover (17), the outer side of the tank body (1) is provided with a heating frame (2), and the heating frame (2) is provided with a plurality of heating wires (24) distributed in a ring array, the side wall of the tank body (1) is provided with a support assembly, the top of the top cover (17) is fixedly installed with a mounting box (16), the tank body (1) is provided with a stirring assembly, the top of the top cover (17) is provided with an air pressure detector, and the side wall of the heating frame (2) is fixedly installed with a support plate (8). A vacuum pump (9) and a filter frame (10) are fixedly mounted on the top of the support plate (8); a second pipe (13) is connected between the vacuum pump (9) and the top cover (17); a first pipe (12) is provided between the vacuum pump (9) and the filter frame (10); a filter assembly is provided inside the filter frame (10); an air outlet pipe is provided on a side of the filter frame (10) away from the tank body (1); a discharge pipe is fixedly mounted on the bottom of the tank body (1); and a control valve is provided on the side wall of the discharge pipe; A lifting ring (15) is provided above the top cover (17), and three connecting rods (14) distributed in a ring array are fixedly installed between the lifting ring (15) and the top of the top cover (17), two symmetrically distributed positioning rods (25) are fixedly installed at the bottom of the top cover (17), and a positioning groove matching the positioning rod (25) is opened at the top of the tank body (1).

2. A vacuum pumping device for silicone rubber production according to claim 1, characterized in that: The support assembly comprises a support ring (4) fixedly mounted on the side wall of the heating frame (2), three symmetrically distributed support columns (5) are fixedly mounted on the bottom end of the support ring (4), and a bottom plate (6) is fixedly mounted on the bottom end of each of the support columns (5).

3. A vacuum pumping device for silicone rubber production according to claim 1, characterized in that: The stirring assembly comprises a rotating rod (19) rotatably mounted on the inner wall of the top end of the top cover (17); a stirring spiral blade (20) is fixedly sleeved on the side wall of the lower section of the rotating rod (19); a plurality of scrapers (21) distributed in a ring array are slidably mounted on the inner wall of the tank body (1); two stirring rods (22) distributed in a symmetrical manner are fixedly mounted between the scrapers (21) and the side wall of the rotating rod (19); a stirring frame (23) is fixedly mounted between the two stirring rods (22) in the same group; a reduction motor (18) is fixedly mounted in the installation box (16); the top end of the rotating rod (19) passes through the top cover (17) and extends into the installation box (16); and one end of the rotating rod (19) passing through the installation box (16) is fixedly connected to the end of the output shaft of the reduction motor (18).

4. A vacuum pumping device for silicone rubber production according to claim 1, characterized in that: The filter assembly comprises a plurality of filter plates (11) slidably mounted in a filter frame (10), limit blocks being fixedly mounted on both sides of the filter plates (11), a limit groove matching the limit blocks on the same side being formed on the inner wall of the filter frame (10), a cover plate being hingedly mounted on the top end of the filter frame (10), and a sealing gasket being fixedly mounted on the bottom end of the cover plate.

5. The vacuum pumping device for silicone rubber production according to claim 1, characterized in that: Two symmetrically distributed stabilizing plates (7) are fixedly mounted on the side wall of the top cover (17), the cross-sections of the two stabilizing plates (7) are both in an inverted "L" shape, and a plurality of rollers (26) distributed in a linear array are rotatably mounted on the inner sides of the vertical sections of the two stabilizing plates (7), and the rollers (26) are in contact with the outer side of the heating frame (2).

6. A vacuum pumping device for silicone rubber production according to claim 1, characterized in that: The outer fixed sleeve of the heating frame (2) is provided with a heat insulating layer (3), and the outer fixed sleeve of the tank body (1) is provided with a heat conducting layer, and the heat conducting layer is located inside the heating frame (2).

7. A vacuum pumping device for silicone rubber production according to claim 1, characterized in that: Two symmetrically distributed support blocks are fixedly mounted on the outside of the heating frame (2), and the top ends of the two support blocks are fixedly connected to the bottom ends of the support plates (8).

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