Efficient cardia structure

Abstract

The utility model discloses a high-efficiency cardia structure, which comprises a first cardia part and a second cardia part, and is additionally arranged between a vacuum pump and a container needing to be pumped, when the vacuum pump starts to work, a plug spring in an oil return prevention structure drives a plug and a plug sealing ring to lift upwards together under the action of suction force, so that the cardia can be pumped out. The air inlet, the movable cavity and the air outlet are communicated; besides, when the vacuum pump breaks down or stops working, a plug spring in the oil return prevention structure is restored, a plug and a plug sealing ring slide downwards together, the plug sealing ring seals the communication position of the movable cavity and the air inlet, engine oil flowing back by the vacuum pump is blocked in the movable cavity by the oil return prevention mechanism, and the oil return prevention structure stops working. And meanwhile, filtering cotton and activated carbon filtering cotton in the gas filtering assembly are arranged, so that the gas can be doubly filtered, and the gas filtering effect of the device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment parts technology, specifically a high-efficiency pyloric valve structure. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and create a vacuum.

[0003] In existing technologies, rotary vane vacuum pumps are equipped with an intake valve, which serves as a check valve for airflow. To ensure a tight seal, a rubber ring is typically placed on the intake valve to enhance its sealing performance. However, after prolonged use, the rubber ring is prone to aging. If a malfunction occurs within the vacuum pump, the check valve's function will be significantly compromised, leading to oil backflow within the pump. Therefore, a high-efficiency intake valve structure is proposed to optimize and solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency pyloric sphincter structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A high-efficiency pyloric valve structure includes a first pyloric valve section and a second pyloric valve section. The first pyloric valve section has an air inlet and a movable chamber inside. The second pyloric valve section has an air outlet inside. The movable chamber has an anti-backflow structure, which includes a plug, a plug sealing ring, a plug spring, and a plug cover. The plug cover has a vent hole and a piston hole. The second pyloric valve section has a gas filtering chamber, which contains a detachable gas filtering assembly. The gas filtering assembly includes a cotton frame, filter cotton, and activated carbon filter cotton. The second pyloric valve section has an anti-loosening structure inside. The plug includes a first plug. The first and second plugs are provided with a head and a skirt. The inner walls of the air inlet and the air outlet are both threaded. A sealing ring is provided at the connection between the first and second plugs. Mesh partitions are symmetrically placed inside the first and second plugs. Multiple compression springs are connected at equal distances between the two mesh partitions. The outer side of one mesh partition is attached to the outer side of the plug cover and has an opening in the center. The outer side of the other mesh partition is attached to the outer side of the gas filter chamber. Multiple limiting blocks are connected at equal distances to the outer side of the other mesh partition. One end of each limiting block is attached to the outer side of the cotton frame.

[0007] As a further embodiment of this utility model: the opposite sides of the first cardia and the second cardia are fitted together and sealed together, and the air inlet and the interior of the movable cavity are interconnected.

[0008] As a further solution of the present utility model: The plug and the plug sealing ring are both located inside the plug cover. The plug spring is sleeved on the plug, and one end of the plug spring abuts against the plug cover.

[0009] As a further solution of the present utility model: The cotton frame is embedded in the gas filtration chamber. The filter cotton is symmetrically placed inside the cotton frame. The activated carbon filter cotton is symmetrically placed between the two filter cottons. One end of the anti-loosening structure is in contact and buckled on the gas filtration component. Multiple anti-loosening structures can be set as needed and the cross-section is set as a triangular structure.

[0010] As a further solution of the present utility model: The first plug part contacts the inner wall of the plug cover. The second plug part is set as a "convex" shaped structure. The head is in sliding fit with the piston hole. The plug sealing ring is closely attached to the bottom of the first plug part.

[0011] As a further solution of the present utility model: The air inlet and the plug sealing ring are both set as circular structures. The diameter of the plug sealing ring is larger than the diameter of the air inlet.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] By setting the device to be installed between the vacuum pump and the container to be evacuated. When the vacuum pump starts to work, the plug spring in the anti-backflow oil structure is affected by the suction force, and it带动 the plug and the plug sealing ring to lift upward together. At this time, the air inlet, the movable cavity and the air outlet are connected. In addition, when the vacuum pump fails or stops working, the plug spring in the anti-backflow oil structure returns to its original state, and the plug and the plug sealing ring slide down together. The plug sealing ring seals the connection between the movable cavity and the air inlet. The engine oil flowing back from the vacuum pump is blocked in the movable cavity by the anti-backflow oil mechanism and does not flow out of the air inlet and then enter the container to be evacuated, preventing the occurrence of backflow, improving the reliability of the operation process of the vacuum pump. At the same time, by setting the filter cotton and the activated carbon filter cotton in the gas filtration component, the gas can be filtered doubly, further improving the gas filtration effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an efficient cardia structure.

[0015] Figure 2 It is a schematic diagram of a partial structure in the efficient cardia structure.

[0016] Figure 3 It is a schematic diagram of the working state of the efficient cardia structure.

[0017] The diagram shows: First cardia section 1, Second cardia section 2, Anti-oil return mechanism 3, Air inlet 4, Movable chamber 5, Air outlet 6, Plug 7, Plug sealing ring 8, Plug spring 9, Plug cover 10, Vent hole 11, Piston hole 12, Gas filter chamber 13, Gas filter assembly 14, Anti-loosening structure 15, First plug head 16, Second plug head 17, Head 18, Skirt 19, Sealing ring 20, Cotton frame 21, Filter cotton 22, Activated carbon filter cotton 23, Mesh partition 24, Compression spring 25, and Limiting block 26. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 3 In this embodiment of the utility model, a high-efficiency pyloric valve structure includes a first pyloric valve portion 1, a second pyloric valve portion 2, an anti-oil return mechanism 3, an air inlet 4, a movable chamber 5, an air outlet 6, a plug 7, a plug sealing ring 8, a plug spring 9, a plug cover 10, a vent hole 11, a piston hole 12, a gas filter chamber 13, a gas filter assembly 14, an anti-loosening structure 15, a first plug head 16, a second plug head 17, a head 18, a skirt 19, a sealing ring 20, a cotton frame 21, filter cotton 22, activated carbon filter cotton 23, a mesh partition 24, a compression spring 25, and a limiting block 26. The first pyloric valve portion 1 and the second pyloric valve portion... The two sides of the first cardia 1 are fitted together and sealed. The first cardia 1 is provided with an air inlet 4 and a movable cavity 5. The air inlet 4 and the movable cavity 5 are interconnected. The second cardia 2 is provided with an air outlet 6. The movable cavity 5 is provided with an anti-backflow structure 3. The anti-backflow structure 3 includes a plug 7, a plug sealing ring 8, a plug spring 9 and a plug cover 10. The plug 7 and the plug sealing ring 8 are both located inside the plug cover 10. The plug spring 9 is sleeved inside the plug 7. One end of the plug spring 9 abuts against the plug cover 10. The plug cover 10 is provided with a vent hole 11 and a piston hole 12.

[0020] The second cardia part 2 is provided with a gas filtration chamber 13, and a detachable gas filtration component 14 is arranged in the gas filtration chamber 13. The gas filtration component 14 includes a cotton frame 21, a filter cotton 22 and an activated carbon filter cotton 23. The cotton frame 21 is embedded in the gas filtration chamber 13. The filter cotton 22 is symmetrically placed in the cotton frame 21. The activated carbon filter cotton 23 is symmetrically placed between the two filter cottons 22. An anti-loosening structure 15 is arranged inside the second cardia part 2. One end of the anti-loosening structure 15 contacts and buckles on the gas filtration component 14. The anti-loosening structure 15 can be provided in multiple numbers as required and its cross-section is arranged as a triangular structure. The plug 7 includes a first plug part 16 and a second plug part 17. The first plug part 16 contacts the inner wall of the plug cover 10. The second plug part 17 is arranged in a "convex" shape structure. The second plug part 17 includes a head 18 and a skirt 19. The head 18 is in sliding fit with the piston hole 12. The plug seal ring 8 is closely attached to the bottom of the first plug part 16. Threads are provided on the inner walls of both the air inlet 4 and the air outlet 6. A seal ring 20 is arranged at the connection part between the first cardia part 1 and the second cardia part 2. Both the air inlet 4 and the plug seal ring 8 are arranged in a circular structure. The diameter of the plug seal ring 8 is larger than the diameter of the air inlet 4. Net partitions 24 are symmetrically placed inside the first cardia part 1 and the second cardia part 2. A plurality of compression springs 25 are equidistantly connected between the two net partitions 24. The outside of one of the net partitions 24 is fitted to the outside of the plug cover 10 and an opening is provided at the central part. The outside of another net partition 24 is fitted to the outside of the gas filtration chamber 13. A plurality of limiting blocks 26 are equidistantly connected to the outside of another net partition 24. One ends of the plurality of limiting blocks 26 are all fitted to the outside of the cotton frame 21.

[0021] The working principle of the present utility model is:

[0022] When a high-efficiency pyloric valve structure is required, the device is first installed between the vacuum pump and the container to be evacuated. The inlet 4 is then connected to the container, and the outlet 6 is connected to the vacuum pump. When the vacuum pump starts working, the plug spring 9 in the anti-backflow structure 3 is subjected to suction, which in turn lifts the plug 7 and the plug sealing ring 8 upwards. Simultaneously, the first plug head 16 slides upwards along the inside of the plug cover 10, causing the head 18 of the second plug head 17 to extend out of the piston hole 12. At this point, the pyloric valve structure forms a gas connection structure, allowing gas from the container to enter the anti-backflow structure 3 and the outlet 6 in the moving chamber 5 sequentially through the inlet 4. The gas filter assembly 14 in the gas filter chamber 13 then uses the filter cotton 22 and activated carbon filter cotton 23 in the gas filter assembly 14 to perform double filtration of the gas before it is drawn away through the gas outlet 6. When the vacuum pump stops working, the plug spring 9 in the anti-oil return structure 3 returns to its original state, and the plug 7 and the plug sealing ring 8 slide down together. The plug sealing ring 8 seals the connection between the movable chamber 5 and the air inlet 4, so that the oil flowing back from the vacuum pump is locked in the plenum structure and does not flow into the pumped container. At the same time, the plug cover 10 and the cotton frame 21 can be limited and fixed by the two mesh partitions 24 and the cooperation of the compression spring 25 and the limiting block 26.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-efficiency cardia structure, comprising a first cardia portion (1) and a second cardia portion (2), characterized in that: An air inlet (4) and a movable cavity (5) are provided inside the first cardia part (1), an air outlet (6) is provided inside the second cardia part (2), an anti-backflow oil structure (3) is provided inside the movable cavity (5), and the anti-backflow oil structure (3) includes a plug (7), a plug sealing ring (8), a plug spring (9) and a plug cover (10). A ventilation hole (11) and a piston hole (12) are provided on the plug cover (10). A gas filtration cavity (13) is provided on the second cardia part (2), and a detachable gas filtration component (14) is provided inside the gas filtration cavity (13). The gas filtration component (14) includes a cotton frame (21), a filter cotton (22) and an activated carbon filter cotton (23). An anti-loosening structure (15) is provided inside the second cardia part (2). The plug (7) includes a first plug part (16) and a second plug part (17). The second plug part (17) includes a head (18) and a skirt part (19). Threads are provided on the inner walls of the air inlet (4) and the air outlet (6). A sealing ring (20) is provided at the connection between the first cardia part (1) and the second cardia part (2). Mesh partitions (24) are symmetrically placed inside the first cardia part (1) and the second cardia part (2). A plurality of compression springs (25) are equidistantly connected between the two mesh partitions (24). The outer side of one of the mesh partitions (24) is fitted to the outer side of the plug cover (10) and an opening is provided at the central part. The outer side of another mesh partition (24) is fitted to the outer side of the gas filtration cavity (13). A plurality of limiting blocks (26) are equidistantly connected to the outer side of another mesh partition (24). One ends of the plurality of limiting blocks (26) are all fitted to the outer side of the cotton frame (21).

2. The high-efficiency esophageal sphincter structure according to claim 1, characterized in that: The opposite sides of the first cardia part (1) and the second cardia part (2) are fitted and sealedly connected, and the air inlet (4) and the movable cavity (5) are internally connected to each other.

3. The high-efficiency esophageal sphincter structure according to claim 1, characterized in that: The plug (7) and the plug sealing ring (8) are both located inside the plug cover (10), the plug spring (9) is sleeved inside the plug (7), and one end of the plug spring (9) abuts against the plug cover (10).

4. The high-efficiency esophageal sphincter structure according to claim 1, characterized in that: The cotton frame (21) is embedded inside the gas filtration cavity (13), the filter cotton (22) is symmetrically placed inside the cotton frame (21), the activated carbon filter cotton (23) is symmetrically placed between the two filter cottons (22), one end of the anti-loosening structure (15) contacts and buckles on the gas filtration component (14), and the anti-loosening structure (15) can be provided in multiple numbers as required and the cross-section is set as a triangular structure.

5. The high-efficiency esophageal sphincter structure according to claim 1, characterized in that: The first plug part (16) contacts the inner wall of the plug cover (10), the second plug part (17) is set as a "convex" shape structure, the head (18) is slidably fitted with the piston hole (12), and the plug sealing ring (8) is closely attached to the bottom of the first plug part (16).

6. The high-efficiency esophageal sphincter structure according to claim 1, characterized in that: Both the air inlet (4) and the plug sealing ring (8) are set as circular structures, and the diameter of the plug sealing ring (8) is larger than the diameter of the air inlet (4).

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