Sealing device for processing glass fiber reinforced plastic septic tank

By combining the inner cover, sealing ring, and expansion ring, along with the design of the circuit board and gas sensor, the problem of poor sealing in fiberglass septic tanks is solved, achieving strong sealing and gas monitoring functions, while also providing insulation and extending equipment life.

CN224199272UActive Publication Date: 2026-05-05陇西县冀丰环保设备有限责任公司
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
陇西县冀丰环保设备有限责任公司
Filing Date
2025-05-14
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing fiberglass septic tank sealing covers are prone to poor sealing and leakage due to material and design issues.

Method used

It adopts a combination structure of inner cover, sealing ring, connecting block and expansion ring, combined with circuit board and gas sensor to achieve multi-layer sealing and gas monitoring functions; polyurethane foam layer and paraffin capsule are used to provide heat preservation effect.

Benefits of technology

It achieves strong sealing performance, prevents gas and liquid leakage, and can monitor gas concentration in real time, buffer temperature changes, and extend equipment life.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224199272U_ABST
    Figure CN224199272U_ABST
Patent Text Reader

Abstract

The utility model discloses a sealing device for processing a glass fiber reinforced plastic septic tank, which relates to the technical field of environmental protection equipment, and comprises a tank body, the top end of the tank body is fixedly connected with three groups of cleaning openings, and the sealing device for processing the glass fiber reinforced plastic septic tank is provided with an inner cover, a sealing ring and a connecting block. Due to the fact that the first expansion rubber ring and the second expansion rubber ring can expand when encountering water due to the material characteristics of the first expansion rubber ring and the second expansion rubber ring, if the water level in the pool body rises into the cleaning opening, the first expansion rubber ring and the second expansion rubber ring extrude each other after being expanded when encountering water and are tighter, and gas or liquid is prevented from overflowing upwards. Meanwhile, leakage can be prevented through preliminary isolation of the inner cover, after the inner cover is installed downwards, the top cover is directly inserted downwards into the top end of the inner cover, the sealing ring surrounds the periphery of the inner cover for further sealing and preventing overflow, at the moment, the top cover and the cleaning opening are fixed, secondary isolation is conducted, leakage is prevented, and the problem that the sealing performance of the device cannot be enhanced is solved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, specifically a sealing device used in the processing of fiberglass septic tanks. Background Technology

[0002] Environmental protection equipment technology refers to equipment developed and manufactured to protect the environment and prevent environmental pollution. Its main function is to collect and treat waste gas, wastewater, solid waste, and other wastes. Among them, fiberglass septic tanks are an environmental protection facility for treating domestic sewage. They remove suspended solids and organic matter from sewage through physical and biological processes, reducing pollution to the environment. In order to protect the environment and extend its service life, septic tanks need to have strong sealing properties during manufacturing. However, due to material and design issues, the sealing covers of most fiberglass septic tanks are prone to poor sealing and leakage problems.

[0003] Now, a novel sealing device for the processing of fiberglass septic tanks is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a sealing device for the processing of fiberglass septic tanks, so as to solve the problem of the inability to enhance sealing performance mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for processing fiberglass septic tanks, comprising a tank body, three sets of cleaning ports fixedly connected to the top of the tank body, a top cover provided at the top of each cleaning port, and a sealing component fixedly connected inside each cleaning port.

[0006] The sealing assembly includes a base ring, which is fixedly connected to the inside of the cleaning port. A first expansion ring is fixedly connected to the top of the base ring, and an inner cover is provided at the top of the first expansion ring. A second expansion ring is fixedly connected to the bottom of the inner cover. A pull ring is movably connected to the middle of the top of the inner cover. Multiple sets of grooves are fixedly connected to the outer periphery of the top of the inner cover. A sealing ring is fixedly connected to the outer periphery of the bottom of the top cover. Multiple sets of protrusions are provided on the inner wall of the sealing ring. Connecting blocks are fixedly connected to the left and right sides of the top cover. A long rod is movably connected inside the connecting block. A disc is fixedly connected to the outer periphery of the long rod. A spring is provided at the bottom of the disc. A frustum rod is fixedly connected to the bottom of the long rod. A connecting tube is fixedly connected to the bottom of the long rod. Balls are provided on the left and right sides of the frustum rod. Circular holes are opened on the left and right sides of the connecting tube. Slots are fixedly connected to the left and right sides of the cleaning port. Wedge-shaped grooves are fixedly connected inside the slots.

[0007] As a further technical solution of this utility model, the external shape and size of the second expansion rubber ring are consistent with the internal shape and size of the first expansion rubber ring, the first expansion rubber ring and the second expansion rubber ring are tightly fitted, the bottom shape and size of the top cover are consistent with the top shape and size of the inner cover, and the internal shape and size of the groove are consistent with the external shape and size of the protrusion.

[0008] As a further technical solution of this utility model, the protrusion is fixedly connected to the top cover, the spring is connected to the long rod and the disc, the spring is elastic, the external shape and size of the long rod are consistent with the internal shape and size of the connecting tube, and the long rod can move up and down along the inside of the connecting tube.

[0009] As a further technical solution of this utility model, the external shape and size of the connecting tube are consistent with the internal shape and size of the slot, the connecting tube can move up and down along the inside of the slot, and the internal shape and size of the sealing ring are consistent with the external shape and size of the inner cover.

[0010] As a further technical solution of this utility model, a circuit board is fixedly connected to the middle position of the bottom of the top cover, a plurality of gas sensors are fixedly connected to the bottom end of the circuit board, and a speaker is fixedly connected to the top end of the top cover.

[0011] As a further technical solution of this utility model, the circuit board is electrically connected to the speaker, the circuit board is electrically connected to the gas sensor, and the gas sensor is arranged at equal intervals.

[0012] As a further technical solution of this utility model, a high-density polyethylene layer is fixedly connected to the outer periphery of the pool body, a polyurethane foam layer is fixedly connected to the inside of the high-density polyethylene layer, multiple sets of paraffin capsules are fixedly connected to the inside of the polyurethane foam layer, and an epoxy resin adhesive layer is fixedly connected to the inner wall of the polyurethane foam layer.

[0013] As a further technical solution of this utility model, the polyurethane foam layer is placed between the high-density polyethylene layer and the epoxy resin adhesive layer, and the polyurethane foam layer is fixedly connected to the high-density polyethylene layer and the epoxy resin adhesive layer, and the paraffin capsules are arranged at equal intervals.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the sealing device used in the processing of the fiberglass septic tank not only achieves strong sealing performance, but also realizes gas monitoring function and heat preservation function;

[0015] The system features an inner cover, a sealing ring, and a connecting block. During use, the inner cover is first placed on the first expansion ring, ensuring a tight fit between the first and second expansion rings. Due to the material properties of the first and second expansion rings, they expand upon contact with water. If the water level in the pool rises to the cleaning port, the expanding rings will compress each other, creating a tighter seal and preventing gas or liquid from overflowing. Simultaneously, the inner cover provides initial insulation, preventing leakage. After the inner cover is installed downwards, the top cover is inserted directly downwards into the top of the inner cover. The sealing ring further seals the outer perimeter of the inner cover, preventing overflow. While providing a positioning effect, the protrusion inserts downward into the groove, firmly fixing the top cover and inner cover together and preventing the top cover from shifting or loosening and causing leakage. During the downward insertion of the top cover, the connecting block simultaneously inserts downward into the slot. Simply press down the long rod to retract the ball into the round hole, and it will be fully inserted into the slot. Then, simply release the long rod, and after the spring returns, the frustum rod will rise, pushing the ball outward and locking it in the wedge-shaped groove. At this time, the top cover and the cleaning port are fixed, ensuring a tight fit between the top cover and the cleaning port for secondary isolation to prevent leakage. Through the internal layers of sealing and the tight fit between the external equipment, a strong sealing performance is achieved.

[0016] Equipped with a circuit board and a gas sensor, the gas in the pool can rise to the cleaning port during use, and flow into the space between the inner cover and the top cover through the gap, filling the inside of the cleaning port. Through the connection of the circuit board and the gas sensor, the gas sensor can monitor the gas concentration inside the cleaning port in real time. If the concentration of methane, carbon dioxide, etc. exceeds the threshold, an audible alarm will be sounded through the speaker to prompt the user to check the equipment and prevent accidents, thus realizing the gas monitoring function.

[0017] By incorporating a polyurethane foam layer and paraffin capsules, the paraffin capsules, embedded within the polyurethane foam layer, absorb and release heat using their latent heat of phase change, thus buffering the impact of diurnal temperature differences on the tank's temperature. Simultaneously, the polyurethane foam layer reduces the impact of low winter temperatures on anaerobic fermentation. Adding a high-density polyethylene layer outside the polyurethane foam layer resists mechanical impact and soil corrosion, extending the lifespan of the polyurethane foam layer. Furthermore, the epoxy resin bonding layer between the polyurethane foam layer and the tank body enhances interfacial adhesion, preventing delamination and achieving insulation. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is an enlarged front view cross-sectional diagram of the inner cover and top cover of this utility model in the separated state.

[0020] Figure 3 This is a top-view enlarged structural diagram of the inner cover of this utility model;

[0021] Figure 4 This is a magnified top view of the structure of the top cover of this utility model;

[0022] Figure 5 This is an enlarged cross-sectional view of the connecting block of this utility model.

[0023] Figure 6 This is an enlarged side view cross-sectional schematic diagram of the pool body of this utility model.

[0024] In the diagram: 1. Pool body; 2. Cleaning port; 3. Top cover; 4. Bottom support ring; 5. First expansion ring; 6. Inner cover; 7. Second expansion ring; 8. Pull ring; 9. Groove; 10. Sealing ring; 11. Protrusion; 12. Connecting block; 13. Long rod; 14. Disc; 15. Spring; 16. Frustum rod; 17. Sphere; 18. Circular hole; 19. Slot; 20. Wedge groove; 21. Circuit board; 22. Gas sensor; 23. Speaker; 24. High-density polyethylene layer; 25. Polyurethane foam layer; 26. Paraffin capsule; 27. Epoxy resin adhesive layer; 28. Connecting pipe. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-6 The present invention provides an embodiment of a sealing device for processing fiberglass septic tanks, comprising a tank body 1, three sets of cleaning ports 2 fixedly connected to the top of the tank body 1, a top cover 3 provided at the top of the cleaning ports 2, and a sealing component fixedly connected inside the cleaning ports 2.

[0027] Please see Figure 1-6A sealing device for processing fiberglass septic tanks further includes a sealing assembly. The sealing assembly includes a bottom support ring 4, which is fixedly connected to the inside of the cleaning port 2. A first expansion ring 5 is fixedly connected to the top of the bottom support ring 4. An inner cover 6 is provided at the top of the first expansion ring 5. A second expansion ring 7 is fixedly connected to the bottom of the inner cover 6. A pull ring 8 is movably connected to the middle position of the top of the inner cover 6. Multiple sets of grooves 9 are fixedly connected to the outer periphery of the top of the inner cover 6. A sealing ring 10 is fixedly connected to the outer periphery of the bottom of the top cover 3. Multiple sets of protrusions 11 are provided on the inner wall of the sealing ring 10. Connecting blocks 12 are fixedly connected to the left and right sides of the top cover 3. A long rod 13 is movably connected inside the connecting block 12. A disc 14 is fixedly connected to the outer periphery of the long rod 13. A spring 15 is provided at the bottom of the disc 14. A frustum rod 16 is fixedly connected to the bottom of the long rod 13. A connecting pipe 28 is fixedly connected to the bottom of the long rod 13. Balls 17 are provided on the left and right sides of the frustum rod 16. The left and right sides of the connecting pipe 28 are provided with round holes 18. The left and right sides of the cleaning port 2 are fixedly connected with slots 19. The inside of the slots 19 is fixedly connected with wedge-shaped grooves 20. The external shape and size of the second expansion rubber ring 7 are consistent with the internal shape and size of the first expansion rubber ring 5. The first expansion rubber ring 5 and the second expansion rubber ring 7 are tightly fitted. The bottom shape and size of the top cover 3 are consistent with the top shape and size of the inner cover 6. The internal shape and size of the groove 9 are consistent with the external shape and size of the protrusion 11. The protrusion 11 is fixedly connected to the top cover 3. The spring 15 is connected to the long rod 13 and the disc 14. The spring 15 is elastic. The external shape and size of the long rod 13 are consistent with the internal shape and size of the connecting pipe 28. The long rod 13 can move up and down along the inside of the connecting pipe 28. The external shape and size of the connecting pipe 28 are consistent with the internal shape and size of the slot 19. The connecting pipe 28 can move up and down along the inside of the slot 19. The internal shape and size of the sealing ring 10 are consistent with the external shape and size of the inner cover 6, providing strong sealing.

[0028] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, during use, when sealing, first place the inner cover 6 on the first expansion ring 5, so that the first expansion ring 5 and the second expansion ring 7 fit tightly together. Due to the material properties of the first expansion ring 5 and the second expansion ring 7, they can expand when exposed to water. If the water level in the pool 1 rises to the cleaning port 2, the first expansion ring 5 and the second expansion ring 7 will expand when exposed to water and squeeze each other, making them even tighter and preventing gas or liquid from overflowing upwards. At the same time, the initial isolation of the inner cover 6 can prevent leakage. After the inner cover 6 is installed downwards, the top cover 3 is directly inserted downwards into the top of the inner cover 6. The sealing ring 10 surrounds the outer perimeter of the inner cover 6 for further sealing and to prevent overflow. The groove 9 serves as a positioning effect, while the protrusion 11... Insert the top cover 3 into the groove 9 downwards to firmly fix the top cover 3 and the inner cover 6, preventing the top cover 3 from shifting or loosening and causing leakage. During the downward insertion of the top cover 3, the connecting block 12 is simultaneously inserted into the slot 19. Simply press down the long rod 13 to retract the ball 17 into the round hole 18, and it can be fully inserted into the slot 19. Then, simply release the long rod 13, and after the spring 15 rebounds, the frustum rod 16 will rise, pushing the ball 17 outwards and locking it in the wedge groove 20. At this time, the top cover 3 and the cleaning port 2 are fixed, ensuring that the top cover 3 and the cleaning port 2 fit tightly together, providing secondary isolation to prevent leakage. Through the internal layer-by-layer sealing and the tight fit between the external equipment, the sealing performance is enhanced.

[0029] A circuit board 21 is fixedly connected to the middle of the bottom of the top cover 3. Multiple gas sensors 22 are fixedly connected to the bottom of the circuit board 21. A speaker 23 is fixedly connected to the top of the top cover 3. The circuit board 21 is electrically connected to the speaker 23 and to the gas sensors 22. The gas sensors 22 are arranged at equal intervals to facilitate monitoring of gas concentration.

[0030] Specifically, such as Figure 1 and Figure 4 As shown, during use, the gas in the pool 1 can rise to the cleaning port 2 and flow through the gap between the inner cover 6 and the top cover 3, filling the inside of the cleaning port 2. Through the connection between the circuit board 21 and the gas sensor 22, the gas sensor 22 can monitor the gas concentration inside the cleaning port 2 in real time. If the concentration of methane, carbon dioxide, etc. exceeds the threshold, an audible alarm can be sounded through the speaker 23 to prompt the user to check the equipment, prevent accidents, and facilitate monitoring. The gas sensor 22 is electrically connected to the circuit board 21 and the speaker 23. This technology is existing technology and will not be described in detail.

[0031] A high-density polyethylene layer 24 is fixedly connected to the outer periphery of the pool body 1. A polyurethane foam layer 25 is fixedly connected to the inside of the high-density polyethylene layer 24. Multiple sets of paraffin capsules 26 are fixedly connected to the inside of the polyurethane foam layer 25. An epoxy resin adhesive layer 27 is fixedly connected to the inner wall of the polyurethane foam layer 25. The polyurethane foam layer 25 is placed between the high-density polyethylene layer 24 and the epoxy resin adhesive layer 27. The polyurethane foam layer 25 is fixedly connected to the high-density polyethylene layer 24 and the epoxy resin adhesive layer 27. The paraffin capsules 26 are arranged at equal intervals, which is conducive to internal fermentation.

[0032] Specifically, such as Figure 1 and Figure 6 As shown, during use, paraffin capsules 26 are embedded in the polyurethane foam layer 25. The latent heat of phase change of the paraffin capsules 26 absorbs and releases heat, buffering the impact of diurnal temperature differences on the temperature inside the tank 1. At the same time, the polyurethane foam layer 25 can reduce the impact of low winter temperatures on anaerobic fermentation. A high-density polyethylene layer 24 is added outside the polyurethane foam layer 25 to resist mechanical impact and soil corrosion, extending the life of the polyurethane foam layer 25. Meanwhile, the contact between the polyurethane foam layer 25 and the tank 1 is made of epoxy resin adhesive layer 27, which improves the interfacial bonding force, prevents delamination and peeling, and promotes internal fermentation.

[0033] Working Principle: In use, firstly, when sealing the inner cover, place the inner cover 6 on the first expansion ring 5, ensuring a tight fit between the first and second expansion rings 7. Due to the material properties of the first and second expansion rings 5 ​​and 7, they expand upon contact with water. If the water level in the pool 1 rises to the cleaning port 2, the first and second expansion rings 5 ​​and 7 expand and press against each other, creating a tighter seal and preventing gas or liquid from overflowing. Simultaneously, the initial isolation provided by the inner cover 6 prevents leakage. After the inner cover 6 is installed downwards, insert the top cover 3 directly downwards into the top of the inner cover 6. The sealing ring 10 surrounds the outer perimeter of the inner cover 6 for further sealing to prevent overflow. The groove 9 serves as a positioning function, while the protrusion 11 inserts downward into the groove 9, firmly fixing the top cover 3 and the inner cover 6 to prevent the top cover 3 from shifting or loosening and causing leakage. During the downward insertion of the top cover 3, the connecting block 12 simultaneously inserts downward into the slot 19. Simply press down on the long rod 13 to retract the ball 17 into the round hole 18, and it can be fully inserted into the slot 19. Then, simply release the long rod 13, and after the spring 15 returns, the frustum rod 16 moves upward, pushing the ball 17 outward and locking it in the wedge groove 20. At this time, the top cover 3 is fixed to the cleaning port 2, ensuring a tight fit between the top cover 3 and the cleaning port 2, providing secondary isolation to prevent leakage. Through the internal layers of sealing and the tight fit between the external equipment, the gas in the pool 1 can rise into the cleaning port 2 during use, flowing through the gaps between the inner cover 6 and the top cover 3 and filling the inside of the cleaning port 2. Through the connection between the circuit board 21 and the gas sensor 22, the gas sensor 22 can monitor the gas concentration inside the cleaning port 2 in real time. If the concentration of methane, carbon dioxide, etc. exceeds the threshold, an audible alarm will be triggered through the speaker 23 to prompt the user to check the equipment. To prevent accidents, during use, paraffin capsules 26 are embedded in the polyurethane foam layer 25. The latent heat of phase change of the paraffin capsules 26 absorbs and releases heat, buffering the impact of diurnal temperature differences on the temperature inside the tank 1. At the same time, the polyurethane foam layer 25 can reduce the impact of low winter temperatures on anaerobic fermentation. A high-density polyethylene layer 24 is added to the outside of the polyurethane foam layer 25 to resist mechanical impact and soil corrosion, extending the life of the polyurethane foam layer 25. Meanwhile, the contact between the polyurethane foam layer 25 and the tank 1 is made of epoxy resin adhesive layer 27 to improve the interfacial bonding force and prevent delamination.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealing device used in the processing of fiberglass septic tanks, comprising a tank body (1), characterized in that: The top of the pool body (1) is fixedly connected to three sets of cleaning ports (2), the top of the cleaning ports (2) is provided with a top cover (3), and the inside of the cleaning ports (2) is fixedly connected to a sealing component. The sealing assembly includes a base ring (4), which is fixedly connected to the inside of the cleaning port (2). A first expansion ring (5) is fixedly connected to the top of the base ring (4). An inner cover (6) is provided at the top of the first expansion ring (5). A second expansion ring (7) is fixedly connected to the bottom of the inner cover (6). A pull ring (8) is movably connected to the middle position of the top of the inner cover (6). Multiple sets of grooves (9) are fixedly connected to the outer periphery of the top of the inner cover (6). A sealing ring (10) is fixedly connected to the outer periphery of the bottom of the top cover (3). Multiple sets of protrusions (11) are provided on the inner wall of the sealing ring (10). The left and right sides of the top cover (3) are fixedly connected to the sealing ring (3). A connecting block (12) is fixedly connected, and a long rod (13) is movably connected inside the connecting block (12). A disc (14) is fixedly connected to the periphery of the long rod (13). A spring (15) is provided at the bottom end of the disc (14). A frustum rod (16) is fixedly connected to the bottom end of the long rod (13). A connecting tube (28) is fixedly connected to the bottom end of the long rod (13). A ball (17) is provided on the left and right sides of the frustum rod (16). A round hole (18) is opened on the left and right sides of the connecting tube (28). A slot (19) is fixedly connected to the left and right sides of the cleaning port (2). A wedge groove (20) is fixedly connected inside the slot (19).

2. The sealing device used in the processing of fiberglass septic tanks according to claim 1, characterized in that: The external shape and size of the second expansion ring (7) are consistent with the internal shape and size of the first expansion ring (5). The first expansion ring (5) and the second expansion ring (7) are tightly fitted together. The bottom shape and size of the top cover (3) are consistent with the top shape and size of the inner cover (6). The internal shape and size of the groove (9) are consistent with the external shape and size of the protrusion (11).

3. The sealing device used in the processing of fiberglass septic tanks according to claim 1, characterized in that: The protrusion (11) is fixedly connected to the top cover (3), the spring (15) is connected to the long rod (13) and the disc (14), the spring (15) is elastic, the external shape and size of the long rod (13) are consistent with the internal shape and size of the connecting tube (28), and the long rod (13) can move up and down along the inside of the connecting tube (28).

4. The sealing device used in the processing of fiberglass septic tanks according to claim 1, characterized in that: The external shape and size of the connecting tube (28) are consistent with the internal shape and size of the slot (19). The connecting tube (28) can move up and down along the inside of the slot (19). The internal shape and size of the sealing ring (10) are consistent with the external shape and size of the inner cover (6).

5. The sealing device used in the processing of fiberglass septic tanks according to claim 1, characterized in that: A circuit board (21) is fixedly connected to the middle position of the bottom of the top cover (3). Multiple gas sensors (22) are fixedly connected to the bottom end of the circuit board (21). A speaker (23) is fixedly connected to the top end of the top cover (3).

6. The sealing device used in the processing of fiberglass septic tanks according to claim 5, characterized in that: The circuit board (21) is electrically connected to the speaker (23) and the circuit board (21) is electrically connected to the gas sensor (22), which is arranged at equal intervals.

7. The sealing device used in the processing of fiberglass septic tanks according to claim 1, characterized in that: The outer periphery of the pool body (1) is fixedly connected with a high-density polyethylene layer (24), the inner side of the high-density polyethylene layer (24) is fixedly connected with a polyurethane foam layer (25), the inner side of the polyurethane foam layer (25) is fixedly connected with multiple sets of paraffin capsules (26), and the inner wall of the polyurethane foam layer (25) is fixedly connected with an epoxy resin adhesive layer (27).

8. A sealing device for processing fiberglass septic tanks according to claim 7, characterized in that: The polyurethane foam layer (25) is placed between the high-density polyethylene layer (24) and the epoxy resin adhesive layer (27). The polyurethane foam layer (25) is fixedly connected to the high-density polyethylene layer (24) and the epoxy resin adhesive layer (27). The paraffin capsules (26) are arranged at equal intervals.