Vacuum kneading device for high-temperature vulcanized silicone rubber

Abstract

The utility model relates to a vacuum kneading device for high-temperature vulcanized silicone rubber, which comprises a bracket, a kneading tipping bucket, double kneading knife rollers and a gland, and is characterized in that the gland is a hollow cover body, the lower surface of the hollow cover body is provided with matrix-shaped cleaning fluid nozzles communicated with the inside of the hollow cover body, each cleaning fluid nozzle faces the inner side of the kneading tipping bucket, and the kneading tipping bucket is provided with a plurality of cleaning fluid nozzles; the upper surface of the hollow cover body is provided with a flushing fluid inlet pipeline communicated with the interior of the hollow cover body, the flushing fluid inlet pipeline is provided with a stop valve, the hollow cover body is further provided with a vacuumizing connector communicated with the kneading tipping bucket, a connecting plate is fixed to the center of the upper surface of the hollow cover body, and a lifting cylinder is arranged above the kneading tipping bucket in a suspended mode. A heat exchange interlayer is arranged at the bottom of the kneading tipping bucket, a medium inlet is formed in the bottom of the heat exchange interlayer, and a medium outlet is formed in the upper portion of the heat exchange interlayer. According to the device, the service life of the flushing and cleaning assembly is remarkably prolonged, and the cleaning convenience and the sealing performance of the device in the working process are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to vulcanized silicone rubber production equipment technical field, concretely relates to a vacuum kneading device for high temperature vulcanized silicone rubber. BACKGROUND

[0002] High temperature vulcanized silicone rubber is high molecular weight polyorganosiloxane (i.e. raw rubber) adding reinforcing filler and other various additives, using organic peroxide as vulcanizing agent, through pressure forming or injection molding, and crosslinking into rubber under high temperature. High temperature vulcanized silicone rubber has good high and low temperature resistance, weather resistance, ozone resistance and elasticity and other excellent performance. Vacuum kneader is an ideal equipment for mixing, kneading, crushing, dispersing and reaggregating various chemical products of high viscosity elastoplastic materials, which has the characteristics of uniform stirring and no dead angle, and is suitable for the production of high temperature vulcanized silicone rubber.

[0003] CN 215094856 U discloses a kind of vacuum kneader, which includes fixed frame and kneading hopper, and the kneading hopper is connected to the top of the fixed frame inside, and the kneading hopper is installed with a kneading bottom ring at the bottom inside, and the kneading hopper is provided with a flushing mechanism at the bottom corresponding to the position of the kneading bottom ring, and the flushing mechanism includes a water inlet pipe, a booster pump, an electric suction base, a tapered plug column and a limiting bottom ring, and the water inlet pipe is connected to the middle of the bottom of the kneading hopper. The vacuum kneader fills clean water into the kneading hopper through the water inlet pipe by the booster pump, and cooperates with the electric suction base to be powered off, so that the tapered plug column is lifted up from the inside of the electric suction base, and the bottom end of the tapered plug column is limited by the limiting bottom ring. Since the tapered plug column is a tapered structure, the clean water can be sprayed around the inside of the kneading hopper, and the kneading knife roller is rotated to clean and scrape, so as to solve the problem of residue adhesion in the kneading hopper, which affects the purity and quality of the next rubber kneading. But there are still the following problems: the tapered plug column and the electric suction base are located in the middle of the upper surface of the kneading bottom ring of the kneading hopper, which is easy to be bonded and damaged by the material, which is not conducive to long-term effective use and affects the flushing and cleaning. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a vacuum kneading device for high temperature vulcanized silicone rubber with reasonable structure and reliable use, which significantly improves the service life of the flushing and cleaning assembly, ensures the cleaning convenience and the sealing performance during the operation of the device.

[0005] The technical solution of the utility model is as follows:

[0006] A vacuum kneading device for high-temperature vulcanized silicone rubber includes a support, a kneading bucket mounted on the support, double kneading cutter rollers within the kneading bucket, and a pressure cap positioned along the upper edge of the kneading bucket. The key technical features are: the pressure cap is a hollow cap; its lower surface has a matrix of cleaning fluid nozzles communicating with its interior, each nozzle facing inwards towards the kneading bucket; its upper surface has a rinsing fluid inlet pipe communicating with its interior, with a shut-off valve on the rinsing fluid inlet pipe; the hollow cap also has a vacuum port communicating with the kneading bucket; a connecting plate is fixed at the center of the upper surface of the hollow cap; a lifting cylinder is suspended above the kneading bucket, with the lower end of the cylinder rod fixedly connected to the upper surface of the connecting plate; a heat exchange jacket is located at the bottom of the kneading bucket, with a medium inlet at the bottom and a medium outlet at the top.

[0007] The vacuum kneading device for high-temperature vulcanized silicone rubber described above has a stop corresponding to the upper edge of the kneading bucket on the lower surface edge of the hollow cover, and a sealing ring that matches the upper edge of the kneading bucket is provided at the stop.

[0008] The aforementioned vacuum kneading device for high-temperature vulcanized silicone rubber has a portal frame on the outside of the support, and the cylinder body of the lifting cylinder is connected and fixed to the crossbeam of the portal frame.

[0009] The vacuum kneading device for high-temperature vulcanized silicone rubber described above has a short rotating shaft on the left and right side walls of the kneading bucket, and a rotating motor reducer connected to one of the short rotating shafts is provided on the support.

[0010] The beneficial effects of this utility model are:

[0011] 1. During use, close the shut-off valve and connect the vacuum port to the negative pressure pipeline to perform vacuuming of the kneading bucket. This ensures that the material is kneaded by the double kneading rollers in the kneading bucket, while the heat exchange jacket is used to regulate the working temperature of the kneading operation. Throughout the entire process, the lifting cylinder presses down on the hollow cover to ensure a tight fit between the sealing ring and the upper edge of the kneading bucket, guaranteeing the sealing performance of the device during operation.

[0012] 2. When cleaning is required, stop vacuuming, open the shut-off valve, and inject cleaning fluid into the inner cavity of the hollow cover through the cleaning fluid inlet pipe. The cleaning fluid is then sprayed into the kneading and tipping bucket through the matrix-shaped cleaning fluid nozzles. The cleaning function is achieved under the stirring state of the double kneading rollers. While ensuring the cleaning function, the matrix-shaped cleaning fluid nozzles are located on the lower surface of the hollow cover, not within the kneading and tipping bucket, avoiding contact with materials and thus preventing adhesion and damage. This significantly improves the service life of the cleaning components and ensures convenient cleaning. Attached Figure Description

[0013] Figure 1It is a structure schematic view of the utility model;

[0014] Figure 2 It is Figure 1 a side view;

[0015] Figure 3 It is a schematic view of the utility model opening hollow cover body.

[0016] In the drawing: 1. lifting cylinder, 2. door-shaped high stand, 3. flushing liquid inlet pipeline, 4. stop valve, 5. connecting plate, 6. hollow cover body, 7. inner cavity, 8. vacuumizing interface, 9. cleaning liquid spout, 10. support, 11. medium inlet, 12. kneading hopper, 13. heat exchange interlayer, 14. kneading hopper, 15. turnover motor speed reducer, 16. sealing ring, 17. medium outlet. DETAILED DESCRIPTION

[0017] The utility model is described in detail according to the drawing of the specification.

[0018] As Figures 1-3 shown, the vacuum kneading device for high-temperature vulcanized silicone rubber includes support 10, kneading hopper 12 arranged on support 10, double kneading knife rollers 14 arranged in kneading hopper 12, gland arranged on the upper edge of kneading hopper 14.

[0019] Among them, the gland is hollow cover body 6, the lower surface of hollow cover body 6 is provided with matrix-shaped cleaning liquid spout 9 communicated with its inner cavity 7, each cleaning liquid spout 9 is towards the inner side of kneading hopper 12, the upper surface of hollow cover body 6 is provided with flushing liquid inlet pipeline 3 communicated with its inner cavity 7, and stop valve 4 is arranged on flushing liquid inlet pipeline 3. Hollow cover body 6 is additionally provided with vacuumizing interface 8 communicated with kneading hopper 12. The center of the upper surface of hollow cover body 6 is fixed with connecting plate 5, lifting cylinder 1 is suspended above kneading hopper 12, and the lower end of the cylinder rod of lifting cylinder 1 is fixedly connected with the upper surface of connecting plate 5. The bottom of kneading hopper 12 is provided with heat exchange interlayer 13, the bottom of heat exchange interlayer 13 is provided with medium inlet 11, and the upper portion is provided with medium outlet 17.

[0020] In the embodiment, the lower surface edge of hollow cover body 6 is provided with a stop opening corresponding to the upper edge of kneading hopper 12, and sealing ring 16 matched with the upper edge of kneading hopper 12 is arranged at the stop opening. The outer side of support 10 is provided with door-shaped high stand 2, and the cylinder body of lifting cylinder 1 is connected and fixed with the crossbeam of door-shaped high stand 2. Turnover short shafts are arranged on the left and right side walls of kneading hopper 12, and turnover motor speed reducer 15 connected with one of the turnover short shafts is arranged on support 10.

[0021] Working principle:

[0022] 1、using time, with the lifting cylinder 1 driven hollow cover body 6 to rise to the top dead center, add various production materials to the kneading hopper 12, then the lifting cylinder 1 drives the hollow cover body 6 to descend, make the sealing ring 16 and the kneading hopper 12 upper edge close contact.Closing the stop valve 4, make the vacuum interface 8 and the negative pressure pipeline communication, carry out vacuum operation to the kneading hopper 12.Start the double kneading knife roller 14 and carry out vacuum kneading operation.

[0023] 2、after operation, stop vacuum, with the lifting cylinder 1 driven hollow cover body 6 to rise to the top dead center, start the turnover motor reducer 15, drive the kneading hopper 12 to overturn 90 degrees and pour out the product.After pouring, the turnover motor reducer 15 drives the kneading hopper 12 to reset.The lifting cylinder 1 drives the hollow cover body 6 to descend again and buckle with the kneading hopper 12.

[0024] 3、open the stop valve 4, inject flushing liquid into the inner cavity of the hollow cover body 6 through the flushing liquid inlet pipeline 3, then spray the kneading hopper 12 through the matrix cleaning liquid nozzle 9, start the double kneading knife roller 14 again, and produce oscillation with the flushing liquid, so as to achieve cleaning function.

[0025] The above embodiment of the present application is described in detail, but the content is only the preferred embodiment of the present application, and cannot be considered to limit the scope of the present application. Any equivalent changes and improvements within the scope of the present application should still belong to the scope of the present patent.

Claims

1. A vacuum kneading device for high-temperature vulcanized silicone rubber, comprising a support, a kneading bucket mounted on the support, a double kneading cutter roller disposed in the kneading bucket, and a pressure cap disposed on the upper edge of the kneading bucket, characterized in that: The cover is a hollow cover body, a lower surface of the hollow cover body is provided with a matrix-shaped cleaning liquid nozzle communicating with the inside of the hollow cover body, each cleaning liquid nozzle faces the inside of the kneading hopper, an upper surface of the hollow cover body is provided with a flushing liquid inlet pipeline communicating with the inside of the hollow cover body, a stop valve is arranged on the flushing liquid inlet pipeline, a vacuum extraction interface communicating with the kneading hopper is further arranged on the hollow cover body, a connecting plate is fixed on the center of the upper surface of the hollow cover body, a lifting cylinder is suspended above the kneading hopper, a lower end of a cylinder rod of the lifting cylinder is fixedly connected with the upper surface of the connecting plate, a heat exchange interlayer is arranged at the bottom of the kneading hopper, a medium inlet is arranged at the bottom of the heat exchange interlayer, and a medium outlet is arranged at the upper portion of the heat exchange interlayer.

2. The vacuum kneading device for high temperature vulcanized silicone rubber according to claim 1, characterized by: A stop is arranged on the edge of the lower surface of the hollow cover body corresponding to the upper edge of the kneading hopper, and a sealing ring is arranged at the stop and matched with the upper edge of the kneading hopper.

3. The vacuum kneading device for high temperature vulcanized silicone rubber according to claim 1, characterized by: A door-shaped high stand is arranged on the outer side of the support, and a cylinder body of the lifting cylinder is fixedly connected with a cross beam of the door-shaped high stand.

4. The vacuum kneading device for high temperature vulcanized silicone rubber according to claim 1, characterized by: A turning short shaft is arranged on the left and right side walls of the kneading hopper, and a turning motor speed reducer connected with one of the turning short shafts is arranged on the support.

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