Screw unit for RTV (Room Temperature Vulcanization) rubber making industry

Abstract

The utility model belongs to the technical field of RTV (Room Temperature Vulcanization) silicone rubber production equipment, and discloses a screw unit for the RTV rubber making industry, which comprises a rack, a feed hopper fixedly connected to the top of the rack, a charging barrel arranged at the bottom of the feed hopper, a screw arranged on one side of the charging barrel, a temperature control heating ring arranged outside the charging barrel, and a screw arranged on the other side of the charging barrel. One end of the screw rod penetrates through the charging barrel and is connected with the transmission device, a filtering device is arranged at the discharging end of the charging barrel and comprises a filtering barrel body, a multi-layer filtering net structure is arranged in the filtering barrel body, the filtering net structure comprises at least two metal net layers with different hole diameters, an adjusting ring is fixedly connected to the outer wall of the filtering barrel body, and a pressure monitor is arranged on the adjusting ring. And the discharge end of the filter cylinder is connected with a vacuum degassing system. Due to the synergistic effect of the vacuum degassing system and the filtering device, the content of bubbles in the finished rubber material is remarkably reduced, and the uniformity and the sealing performance of the product are improved.

Description

A screw compressor unit for the RTV adhesive manufacturing industry Technical Field

[0001] This utility model belongs to the technical field of RTV silicone rubber production equipment, specifically relating to a screw compressor unit for the RTV rubber production industry. Background Technology

[0002] RTV is a room temperature vulcanizing silicone rubber widely used in sealing, bonding, and potting in aerospace, electronics, and automotive industries. In the production process of RTV silicone rubber, the rubber preparation stage is crucial in determining product quality, and the screw compressor unit is the core equipment in this process.

[0003] Traditional RTV glue-making screw compressor units mainly consist of a feeding system, barrel, screw, heating system, and transmission system. This structure presents the following problems in practical use: First, air bubbles are easily generated during raw material mixing, affecting the sealing performance of the final product; second, the traditional filtration system has a simple structure and cannot effectively remove impurities from the glue, leading to unstable product quality; third, untimely monitoring of filtration pressure changes can easily cause filter clogging or breakage, affecting production continuity; and fourth, the lack of effective degassing measures results in excessive residual air bubbles in the finished product.

[0004] Therefore, there is an urgent need for an improved screw compressor unit for the RTV adhesive manufacturing industry that can effectively solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a screw compressor unit for the RTV adhesive manufacturing industry to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screw compressor unit for the RTV adhesive manufacturing industry, comprising a frame, a feed hopper fixedly connected to the top of the frame, a material cylinder provided at the bottom of the feed hopper, a screw provided on one side of the material cylinder, a temperature-controlled heating coil fixedly connected to the outside of the material cylinder, one end of the screw passing through the material cylinder and connected to a transmission device, the transmission device being fixedly connected to the frame, a filter device provided at the discharge end of the material cylinder, the filter device comprising a filter cylinder body, the filter cylinder body having a multi-layer filter screen structure, the multi-layer filter screen structure comprising at least two layers of metal mesh with different pore sizes, an adjusting ring fixedly connected to the outer wall of the filter cylinder body, a pressure monitor provided on the adjusting ring, and a vacuum degassing system connected to the discharge end of the filter cylinder body.

[0007] Preferably, the transmission device includes a geared motor, the output shaft of which is connected to a screw via a coupling, and a speed regulator is provided on the outer wall of the geared motor.

[0008] Preferably, the multi-layer filter structure consists of a coarse filter, a medium filter, and a fine filter from the outside to the inside, with the pore sizes of the coarse filter, medium filter, and fine filter decreasing sequentially. The multi-layer filter structure is a detachable structure.

[0009] Preferably, the inner wall of the filter cylinder is provided with an annular groove, and a sealing ring is provided in the annular groove, the sealing ring being in contact with the outer edge of the multi-layer filter structure.

[0010] Preferably, the adjusting ring is threadedly connected to the filter cylinder, and a fastening gasket is provided on the inner side of the adjusting ring.

[0011] Preferably, the pressure monitor is electrically connected to the control system, which is located on the side of the frame and has a display screen and operation buttons.

[0012] Preferably, the vacuum degassing system includes a vacuum chamber and a vacuum pump, the vacuum chamber being connected to the discharge end of the filter cylinder, and the air inlet of the vacuum pump being connected to the vacuum chamber.

[0013] Preferably, the temperature-controlled heating coil is divided into at least three independent temperature control zones, and each temperature control zone is electrically connected to the control system.

[0014] Compared with the prior art, the present invention has the following significant advantages:

[0015] This invention effectively removes impurities and air bubbles from the adhesive by adding a multi-layer filter structure to a traditional RTV adhesive production unit, thus improving the quality stability of RTV adhesive production. The detachable multi-layer filter structure facilitates cleaning and replacement, reducing equipment maintenance time. A pressure monitor can monitor the filtration resistance in real time, promptly reminding operators to replace the filter and avoiding production interruptions due to filter blockage or breakage. The synergistic effect of the vacuum degassing system and the filter significantly reduces the air bubble content in the finished adhesive, improving product uniformity and sealing performance. The three-zone independent temperature control heating coil ensures more uniform heating of the adhesive, guaranteeing mixing effect and improving adhesive production efficiency. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 is a cross-sectional structural schematic diagram of the filter device of this utility model;

[0018] Figure 3 is an exploded view of the multi-layer filter structure of this utility model.

[0019] In the diagram: 1. Frame; 2. Feed hopper; 3. Material cylinder; 4. Screw; 5. Temperature control heating coil; 6. Transmission device; 7. Filter device; 8. Filter cylinder; 9. Multi-layer filter structure; 10. Adjusting ring; 11. Pressure monitor; 12. Vacuum degassing system; 13. Gear motor; 14. Coupling; 15. Speed ​​regulator; 16. Coarse filter; 17. Medium filter; 18. Fine filter; 19. Annular groove; 20. Sealing ring; 21. Fastening gasket; 22. Control system; 23. Display screen; 24. Operation button; 25. Vacuum chamber; 26. Vacuum pump. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Please refer to Figure 1. This utility model provides a technical solution: a screw compressor unit for the RTV adhesive manufacturing industry, including a frame 1, a feed hopper 2 fixedly connected to the top of the frame 1, a material cylinder 3 provided at the bottom of the feed hopper 2, a screw 4 provided on one side of the material cylinder 3, a temperature control heating coil 5 fixedly connected to the outside of the material cylinder 3, one end of the screw 4 passing through the material cylinder 3 and connected to a transmission device 6, the transmission device 6 being fixedly connected to the frame 1, a filter device 7 provided at the discharge end of the material cylinder 3, the filter device 7 including a filter cylinder 8, a multi-layer filter structure 9 provided inside the filter cylinder 8, the multi-layer filter structure 9 including at least two layers of metal mesh with different pore sizes, an adjusting ring 10 fixedly connected to the outer wall of the filter cylinder 8, a pressure monitor 11 provided on the adjusting ring 10, and a vacuum degassing system 12 connected to the discharge end of the filter cylinder 8.

[0023] In this embodiment, the transmission device 6 includes a geared motor 13. The output shaft of the geared motor 13 is connected to the screw 4 via a coupling 14. A speed regulator 15 is provided on the outer wall of the geared motor 13. The speed regulator 15 can adjust the speed of the screw 4 according to different RTV rubber formulations to ensure the mixing effect of the rubber and improve production adaptability.

[0024] Example 2

[0025] Please refer to Figures 2 and 3. To improve filtration efficiency, the multi-layer filter structure 9 consists of a coarse filter 16, a medium filter 17, and a fine filter 18, arranged from the outside in. The pore sizes of the coarse filter 16, medium filter 17, and fine filter 18 decrease sequentially. The multi-layer filter structure 9 is detachable. This gradient filtration design can gradually remove impurities of different sizes, preventing the fine filter 18 from directly bearing all the filtration pressure and causing clogging or damage.

[0026] To prevent material leakage during filtration, an annular groove 19 is provided on the inner wall of the filter cylinder 8. A sealing ring 20 is installed within the annular groove 19, and the sealing ring 20 contacts the outer edge of the multi-layer filter structure 9. The sealing ring 20 is made of high-temperature resistant silicone rubber, which can maintain good elasticity and sealing performance in high-temperature environments.

[0027] The adjusting ring 10 is threaded onto the filter cylinder 8, and a fastening gasket 21 is provided on the inner side of the adjusting ring 10. By rotating the adjusting ring 10, appropriate pressure can be applied to the multi-layer filter structure 9 to ensure the seal between the filter and the filter cylinder 8, and also to facilitate the disassembly and replacement of the filter.

[0028] Example 3

[0029] Please refer to Figure 1. To achieve intelligent monitoring of the filtration process, the pressure monitor 11 is electrically connected to the control system 22. The control system 22 is located on the side of the frame 1 and is equipped with a display screen 23 and operation buttons 24. When the filtration resistance exceeds the preset value, the control system 22 will issue an alarm through the display screen 23 to remind the operator to replace the filter screen, thus avoiding production accidents caused by filter screen blockage.

[0030] The vacuum degassing system 12 includes a vacuum chamber 25 and a vacuum pump 26. The vacuum chamber 25 is connected to the discharge end of the filter cylinder 8, and the air inlet of the vacuum pump 26 is connected to the vacuum chamber 25. After the rubber compound is filtered through the multi-layer filter structure 9, it enters the vacuum chamber 25 for degassing. The vacuum pump 26 continuously pumps air to fully release the air bubbles in the rubber compound, significantly improving the sealing performance of the finished rubber compound.

[0031] The temperature-controlled heating coil 5 is divided into at least three independent temperature control zones, each of which is electrically connected to the control system 22. This zoned temperature control design allows for different temperature settings based on the characteristics of different RTV rubber compounds and the functions of each section of the screw 4, resulting in more uniform heating of the rubber compound during transport and improving mixing efficiency and rubber production efficiency.

[0032] The working principle and usage process of this utility model are as follows: First, the RTV adhesive raw material is fed into the material cylinder 3 through the feed hopper 2. The reduction motor 13 is started, and the screw 4 is driven to rotate through the coupling 14. At the same time, the temperature control heating coil 5 is activated to heat the material cylinder 3. The raw material is stirred and mixed under the rotation of the screw 4 and conveyed forward along the material cylinder 3. The mixed adhesive is pushed by the pressure of the screw 4 into the filter cylinder 8 of the filter device 7, and filtered through the multi-layer filter structure 9. During the filtration process, the pressure monitor 11 monitors the change in filtration resistance in real time and transmits the data to the control system 22 for display. The filtered adhesive enters the vacuum chamber 25 of the vacuum degassing system 12 for degassing treatment, finally obtaining a high-quality RTV adhesive free of impurities and bubbles.

[0033] When the multi-layer filter structure 9 needs to be cleaned or replaced after a period of use, simply loosen the adjusting ring 10 and remove the multi-layer filter structure 9 for cleaning or replacement. The operation is simple and convenient, greatly reducing equipment maintenance time.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw compressor unit for the RTV adhesive manufacturing industry, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected to a feed hopper (2), the bottom of the feed hopper (2) is provided with a material cylinder (3), a screw (4) is provided on one side of the material cylinder (3), a temperature control heating coil (5) is fixedly connected to the outside of the material cylinder (3), one end of the screw (4) passes through the material cylinder (3) and is connected to a transmission device (6), the transmission device (6) is fixedly connected to the frame (1), a filter device (7) is provided at the discharge end of the material cylinder (3), the filter device (7) includes a filter cylinder (8), the filter cylinder (8) is provided with a multi-layer filter structure (9), the multi-layer filter structure (9) includes at least two layers of metal mesh with different pore sizes, an adjustment ring (10) is fixedly connected to the outer wall of the filter cylinder (8), a pressure monitor (11) is provided on the adjustment ring (10), and a vacuum degassing system (12) is connected to the discharge end of the filter cylinder (8).

2. The screw compressor unit for the RTV adhesive manufacturing industry according to claim 1, characterized in that: The transmission device (6) includes a geared motor (13), the output shaft of which is connected to the screw (4) via a coupling (14), and a speed regulator (15) is provided on the outer wall of the geared motor (13).

3. The screw compressor unit for the RTV adhesive manufacturing industry according to claim 1, characterized in that: The multi-layer filter structure (9) consists of a coarse filter (16), a medium filter (17), and a fine filter (18) from the outside to the inside. The pore sizes of the coarse filter (16), the medium filter (17), and the fine filter (18) decrease sequentially. The multi-layer filter structure (9) is a detachable structure.

4. A screw compressor unit for the RTV adhesive manufacturing industry according to claim 3, characterized in that: The inner wall of the filter cylinder (8) is provided with an annular groove (19), and a sealing ring (20) is provided in the annular groove (19). The sealing ring (20) is in contact with the outer edge of the multi-layer filter structure (9).

5. A screw compressor unit for the RTV adhesive manufacturing industry according to claim 1, characterized in that: The adjusting ring (10) is threadedly connected to the filter cylinder (8), and a fastening gasket (21) is provided on the inner side of the adjusting ring (10).

6. A screw compressor unit for the RTV adhesive manufacturing industry according to claim 1, characterized in that: The pressure monitor (11) is electrically connected to the control system (22), which is located on the side of the frame (1). The control system (22) is equipped with a display screen (23) and operation buttons (24).

7. A screw compressor unit for the RTV adhesive manufacturing industry according to claim 1, characterized in that: The vacuum degassing system (12) includes a vacuum chamber (25) and a vacuum pump (26). The vacuum chamber (25) is connected to the discharge end of the filter cylinder (8), and the air inlet of the vacuum pump (26) is connected to the vacuum chamber (25).

8. A screw compressor unit for the RTV adhesive manufacturing industry according to claim 1, characterized in that: The temperature control heating coil (5) is divided into at least three independent temperature control zones, and each temperature control zone is electrically connected to the control system (22).

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