Low molecule removing device suitable for high-temperature vulcanized phenyl silicone rubber

Abstract

The utility model relates to a low molecule removing device suitable for high-temperature vulcanized phenyl silicone rubber, which comprises a tank body and a spray head structure, and is characterized in that a feeding vertical pipe is fixed in the center of an upper cover of the tank body, the lower end of the feeding vertical pipe penetrates through the upper cover and is connected with a temporary storage bin, the spray head structure comprises a plurality of spray heads, and an inlet of each spray head is communicated with the bottom of the temporary storage bin; an annular heating cavity is fixed to the lower surface of the upper cover, the inner ring wall of the annular heating cavity wraps the outer sides of the temporary storage bin and the sprayers, the sprayers are evenly arranged around the center line of the feeding vertical pipe, an acute included angle is formed between the center line of each sprayer and the center line of the feeding vertical pipe, and the side face of the lower end of the heating interlayer is connected with a heated water inlet pipeline. The heating water inlet pipeline is additionally provided with a cleaning branch, the tail end of the cleaning branch is communicated with the side wall of the upper end of the feeding vertical pipe, and the side wall of the discharging pipe at the bottom of the tank body is communicated with a blow-off pipeline. On one hand, the separation efficiency is improved, and on the other hand, the nozzle structure is prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber. Background Art

[0002] The low-molecular-weight remover is an important device for producing high-temperature vulcanized phenyl silicone rubber. It removes unreacted low-molecular-weight materials from the material under high temperature and high vacuum conditions. Finally, the high-temperature silicone rubber product is extruded through the screw extruder at the bottom of the low-molecular-weight remover.

[0003] CN 218890154 U discloses a silicone rubber low-molecular-weight remover, which includes a tank body, the top of which is connected to a feed barrel by a fixed column, a feed pipe is provided at the bottom of the feed barrel, a second motor is fixedly connected to one side of the outer wall of the tank body, the output end of the second motor is connected to a rotating shaft, a fixed rod is fixedly connected to the outer wall of the rotating shaft, a roller is fixedly connected to the other end of the fixed rod, a plurality of groups of through holes are provided on the outer wall of the roller, a scraper is fixedly connected to the top of the inner wall of the tank body, and a rotating drum is fixedly connected to one end of the feed pipe away from the feed barrel. The low-molecular-weight remover avoids rubber clogging the through hole by cleaning the rubber on the outer wall of the roller, and increases the fluidity of the rubber and improves production efficiency by uniformly heating the rubber on the inner wall of the feed barrel. However, there are still the following problems: compared with the spray-type structure, the through hole is avoided from being blocked, but the contact area between the rubber and the vacuum is reduced, and the low-molecular-weight removal effect needs to be enhanced. Utility Model Content

[0004] The utility model aims to provide a low-molecular-weight remover for high-temperature vulcanized phenyl silicone rubber with reasonable structure and reliable use to solve the above problems, which can improve the removal efficiency on the one hand and avoid clogging of the nozzle structure on the other hand.

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

[0006] A low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber comprises a tank body and a nozzle structure arranged in the tank body, a heating interlayer is arranged in the outer peripheral wall of the tank body, and its technical key points are: a feed riser is fixed at the center of the upper cover of the tank body, the lower end of the feed riser passes through the upper cover and is connected to a cache bin, the nozzle structure comprises a plurality of nozzles, the inlet of each nozzle is connected to the bottom of the cache bin, an annular heating cavity is fixed on the lower surface of the upper cover, the inner ring wall of the annular heating cavity is wrapped around the cache bin and the outer side of each nozzle, each nozzle is evenly arranged around the center line of the feed riser, and an acute angle is arranged between the center line of the nozzle and the center line of the feed riser, the lower end side surface of the heating interlayer is connected to a heating water inlet pipeline, the heating water inlet pipeline is further provided with a cleaning branch, the end of the cleaning branch is connected to the upper end side wall of the feed riser, and the bottom discharge pipe side wall of the tank body is connected to a sewage pipeline.

[0007] The above-mentioned low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber has cleaning control valves at the inlet of the cleaning branch, the outlet of the cleaning branch and the sewage pipeline, a heating control valve on the heating water inlet pipeline, and a feed control valve at the inlet of the feed riser.

[0008] The above-mentioned low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber has an acute angle of 30°-60°.

[0009] The above-mentioned low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber, an annular escape space is formed between the outer ring wall of the annular heating chamber and the inner circumferential surface of the tank body, the upper cover is provided with a plurality of upper escape outlets corresponding to the annular escape space, and the side wall of the tank body is provided with a plurality of side escape outlets corresponding to the annular escape space.

[0010] The above-mentioned low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber, each of the upper discharge outlets is commonly connected to an annular upper confluence pipeline, and the annular upper confluence pipeline is provided with an upper discharge outlet, and each of the side discharge outlets is commonly connected to an annular lower confluence pipeline, and the annular lower confluence pipeline is provided with a lower discharge outlet, and the upper discharge outlet and the lower discharge outlet are respectively connected to the negative pressure pipeline.

[0011] The above-mentioned low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber is provided with a pressure cover corresponding to the annular heating cavity on the upper cover, and a heating element is provided in the annular heating cavity.

[0012] The beneficial effects of the utility model are:

[0013] 1. On the one hand, each nozzle is used to spray rubber materials to increase the contact area with the vacuum and improve the removal efficiency. On the other hand, an annular heating chamber is used to wrap the buffer bin and each nozzle, so that the materials in each buffer bin and nozzle are in a real-time heating state to avoid clogging of the through hole.

[0014] 2. When the work is finished, the hot water for cleaning is input into the cleaning branch through the heating water inlet pipeline. The hot water for cleaning enters the buffer bin through the feed riser, and is then sent to each nozzle from the buffer bin to clean each position in the nozzle and flush the remaining material out of the nozzle to avoid the nozzle through hole being blocked after the work is finished and to avoid contamination of subsequent materials during secondary production. The cleaning water is finally discharged through the sewage pipeline.

[0015] 3. It is equipped with not only multiple upper outlets but also multiple side outlets to ensure the discharge requirements of low molecular weight products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] In the figure: 1. negative pressure pipeline, 2. upper discharge outlet, 3. annular upper confluence pipeline, 4. upper discharge outlet, 5. feed control valve, 6. feed riser, 7. cleaning control valve, 8. gland, 9. cleaning branch, 10. upper cover, 11. tank body, 12. annular lower confluence pipeline, 13. side discharge outlet, 14. buffer bin, 15. cleaning control valve, 16. heating water inlet pipeline, 17. heating control valve, 18. sewage pipeline, 19. cleaning control valve, 20. discharge pipe, 21. heating interlayer, 22. nozzle, 23. annular heating chamber, 24. lower discharge outlet, 25. heating water outlet pipeline. DETAILED DESCRIPTION

[0018] The utility model is described in detail according to the accompanying drawings of the specification.

[0019] like Figure 1 As shown, the low-molecular-weight remover suitable for high-temperature vulcanized phenyl silicone rubber comprises a tank body 11 and a nozzle structure arranged in the tank body 11. A heating interlayer 21 is arranged in the outer peripheral wall of the tank body 11.

[0020] Among them, a feed riser 6 is fixed at the center of the upper cover 10 of the tank body 11, and the lower end of the feed riser 6 passes through the upper cover 10 and is connected to the buffer bin 14. The nozzle structure includes a plurality of nozzles 22, and the inlet of each nozzle 22 is connected to the bottom of the buffer bin 14. An annular heating cavity 23 is fixed on the lower surface of the upper cover 10, and the inner ring wall of the annular heating cavity 23 is wrapped around the outer side of the buffer bin 14 and each nozzle 22. In this embodiment, a pressure cover 8 corresponding to the annular heating cavity 23 is provided on the upper cover 10, and a heating element (omitted in the figure) is provided in the annular heating cavity 23.

[0021] Each nozzle 22 is evenly arranged around the center line of the feed riser 6, and an acute angle is provided between the center line of the nozzle 22 and the center line of the feed riser 6. In this embodiment, the acute angle is 30°-60°.

[0022] The lower end side of the heating interlayer 21 is connected to the heating water inlet pipeline 16, and the upper end side of the heating interlayer 21 is connected to the heating water outlet pipeline 25. The heating water inlet pipeline 16 is also provided with a cleaning branch 9, the end of which is connected to the upper end side wall of the feed riser 6, and the side wall of the bottom discharge pipe 20 of the tank body 11 is connected to the sewage pipeline 18. The inlet of the cleaning branch 9, the outlet of the cleaning branch 9 and the sewage pipeline 18 are respectively provided with cleaning control valves 15, 7, 19, the heating water inlet pipeline 16 is provided with a heating control valve 17, and the inlet of the feed riser 6 is provided with a feed control valve 5.

[0023] An annular escape space is formed between the outer annular wall of the annular heating chamber 23 and the inner circumferential surface of the tank body 11. The upper cover 10 is provided with a plurality of upper escape ports 4 corresponding to the annular escape space, and the side wall of the tank body 11 is provided with a plurality of side escape ports 13 corresponding to the annular escape space. Each of the upper escape ports 4 is connected to an annular upper confluence pipeline 3, and an upper discharge port 2 is provided on the annular upper confluence pipeline 3. Each of the side escape ports 13 is connected to an annular lower confluence pipeline 12, and a lower discharge port 24 is provided on the annular lower confluence pipeline 12. The upper discharge port 2 and the lower discharge port 24 are respectively connected to the negative pressure pipeline 1.

[0024] Working principle:

[0025] 1. The rubber material enters the feed riser 6 through the feed control valve 5, and then enters each nozzle 22 through the buffer bin 14, and finally is sprayed out through each nozzle 22 to reach the tank body 11 under the action of pressure. Under the action of high temperature and high vacuum, the low molecular components in the rubber material are separated and discharged to the annular upper confluence pipeline 3 and the annular lower confluence pipeline 12 through each upper discharge port 2 and the lower discharge port 24, and finally discharged to the negative pressure pipeline 1.

[0026] 2. After the work is completed, close the feed control valve 5 and the discharge port, keep the heating element warm, open all the cleaning control valves, and heat the water inlet pipeline 16 to introduce hot water for cleaning into the cleaning branch 9. The hot water for cleaning enters the buffer bin 14 through the feed riser 6, and is then sent to each nozzle 22 by the buffer bin 14 to clean each position in the nozzle 22, flush the remaining material out of the nozzle 22, and avoid the through hole of the nozzle 22 being blocked after the work is completed. The cleaning water is finally discharged through the sewage pipe 18.

[0027] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A low molecular weight remover suitable for high temperature vulcanized phenyl silicone rubber, comprising a tank body and a nozzle structure arranged in the tank body, wherein a heating interlayer is arranged in the outer peripheral wall of the tank body, and characterized in that: A feed riser is fixed at the center of the upper cover of the tank body, and the lower end of the feed riser passes through the upper cover and is connected to the cache bin. The nozzle structure includes a plurality of nozzles, and the inlet of each nozzle is connected to the bottom of the cache bin. An annular heating chamber is fixed on the lower surface of the upper cover, and the inner ring wall of the annular heating chamber is wrapped around the outside of the cache bin and each nozzle. Each nozzle is evenly arranged around the center line of the feed riser, and an acute angle is provided between the center line of the nozzle and the center line of the feed riser. The lower end side surface of the heating interlayer is connected to the heating water inlet pipeline, and the heating water inlet pipeline is further provided with a cleaning branch, and the end of the cleaning branch is connected to the upper end side wall of the feed riser, and the side wall of the bottom discharge pipe of the tank body is connected to the sewage pipeline.

2. The low molecular weight remover suitable for high temperature vulcanized phenyl silicone rubber according to claim 1, characterized in that: The inlet of the cleaning branch, the outlet of the cleaning branch and the sewage pipeline are respectively provided with a cleaning control valve, the heating water inlet pipeline is provided with a heating control valve, and the inlet of the feed riser is provided with a feed control valve.

3. The low molecular weight remover suitable for high temperature vulcanized phenyl silicone rubber according to claim 1, characterized in that: The acute angle is 30°-60°.

4. The low molecular weight remover suitable for high temperature vulcanized phenyl silicone rubber according to claim 1, characterized in that: An annular escape space is formed between the outer ring wall of the annular heating chamber and the inner peripheral surface of the tank body, a plurality of upper escape openings corresponding to the annular escape space are arranged on the upper cover, and a plurality of side escape openings corresponding to the annular escape space are arranged on the side wall of the tank body.

5. The low molecular weight remover suitable for high temperature vulcanized phenyl silicone rubber according to claim 4, characterized in that: Each of the upper outlets is connected to an annular upper converging pipeline, which is provided with an upper discharge outlet. Each of the side outlets is connected to an annular lower converging pipeline, which is provided with a lower discharge outlet. The upper discharge outlet and the lower discharge outlet are respectively connected to the negative pressure pipeline.

6. The low molecular weight remover suitable for high temperature vulcanized phenyl silicone rubber according to claim 1, characterized in that: The upper cover is provided with a pressure cover corresponding to the annular heating cavity, and a heating element is provided in the annular heating cavity.

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