Multi-layer tandem type one-way valve structure

Abstract

The utility model discloses a multi-layer tandem type one-way valve structure which comprises an inner seal, the inner seal is of a cylindrical structure, and gaskets are symmetrically embedded in the surface of the inner seal. Holes are symmetrically formed in the inner closed surface, a deflation valve seat and an inflation valve seat are arranged in the inner closed holes respectively, an outlet valve seat is embedded in one side of the deflation valve seat, a deflation plug and a deflation plug are arranged in the outlet valve seat, the deflation plug is installed on the surface of the deflation plug, and the deflation plug is installed on the surface of the inflation plug. A pressing nut is embedded in the outlet valve seat, and an air outlet valve needle is installed in the pressing nut. According to the multi-layer tandem type one-way valve structure, the deflation valve seat and the inflation valve seat are arranged, air inlet and air outlet are designed in a split mode, meanwhile, the inflation valve and the deflation valve are divided into two one-way valves to form a control loop, and the air flow is adjusted according to feedback of the condition in a cylinder on accessories by externally connecting auxiliary equipment.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a multi-layer series one-way valve structure. Background Technology

[0002] Valves are control components in fluid transport systems. They are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the transported medium. One-way valves are a special type of valve, also called check valves or non-return valves. They allow fluid to flow freely in one direction while preventing fluid from flowing in the opposite direction. Oxygen bomb nut valves are mainly used to control the entry and exit of oxygen in the oxygen bomb, while ensuring the sealing of the oxygen bomb during oxygen filling and combustion experiments. In calorimetric experiments, its precise control is crucial for experimental safety and the accuracy of results. However, the inlet and outlet valves used in domestically produced low-pressure oxygen bombs are exclusively one-way valves, mainly used for oxygen filling and venting. They are generally made of aluminum alloy or nickel-chromium alloy steel, which has better corrosion resistance. However, existing valves, being only single-way valves, are prone to unstable gas pressure inside the cylinder during filling and venting. Furthermore, their relatively simple structure makes it difficult to guarantee valve sealing. Utility Model Content

[0003] The purpose of this utility model is to provide a multi-layer series one-way valve structure to solve the problems mentioned in the background art, which are only a single one-way valve, which easily leads to unstable gas pressure inside the cylinder during filling and discharging, and whose simple structure makes it impossible to guarantee valve sealing.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer series one-way valve structure, including an inner seal, wherein the inner seal is configured as a cylindrical structure, and gaskets are symmetrically embedded on the surface of the inner seal;

[0005] The inner closed surface is symmetrically provided with holes, and the inner closed holes are respectively provided with a vent valve seat and an inflation valve seat. An outlet valve seat is embedded in one side of the vent valve seat, and the outlet valve seat is provided with a vent plug and a vent plug. The vent plug is installed on the surface of the vent plug. A clamping nut is embedded in the outlet valve seat, and an air outlet valve needle is installed in the clamping nut. The end of the air outlet valve needle passes through the clamping nut and is connected to a hand-tightening seat. An adapter is installed on the end surface of the inflation valve seat. An air inlet valve rod and a spring are embedded in the inflation valve seat. The end of the air inlet valve rod is connected to a valve rod. A retaining block is installed in the adapter. An oxygen filling retaining connector is installed in the end of the retaining block. A copper tube retaining is fitted on the end surface of the oxygen filling retaining connector. A sealing gasket is provided between the adapter and the inflation valve seat.

[0006] Preferably, the inner closed hole is provided with threads, and the inner closed hole is threadedly connected to the venting valve seat and the inflation valve seat respectively.

[0007] Using the above technical solution, rotating the inflation valve seat allows it to rotate along the internal threads of the sealed interior.

[0008] Preferably, the gasket is disposed inside the inner closed hole, and the gasket is disposed in connection with the vent valve seat and the inflation valve seat.

[0009] By adopting the above technical solution, the gasket can increase the sealing between the vent valve seat and the inflation valve seat.

[0010] Preferably, the vent valve seat and the outlet valve seat are connected by a thread, the outlet valve seat is configured as a hollow structure, and the vent plug is located at the bottom of the outlet valve seat.

[0011] By using the above technical solution, rotating the outlet valve seat allows it to rotate on the surface of the vent valve seat.

[0012] Preferably, both the vent valve seat and the vent valve needle are provided with a hollow structure, and the end surface of the vent valve needle is provided with a hole.

[0013] Using the above technical solution, gas enters the interior of the outlet valve needle through the vent valve seat, and an O-ring is provided between the inlet valve seat and the inlet valve rod.

[0014] Preferably, the inflation valve seat and the inner closure are connected by a thread, and the end of the inflation valve seat is connected by a thread to the adapter. The air intake valve rod is disposed inside the inflation valve seat and the adapter.

[0015] Using the above technical solution, the inflation valve seat is rotated to allow it to rotate within its enclosed interior. An O-ring is provided between the air outlet valve needle and the clamping nut.

[0016] Preferably, the adapter and the ferrule limiting block are connected by threads, and the ferrule limiting block and the copper tube ferrule are connected by threads.

[0017] Using the above technical solution, the ferrule limiting block rotates on the surface of the adapter, while the copper tube ferrule rotates on the surface of the ferrule limiting block.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the multi-layer series one-way valve structure:

[0019] 1. An air release valve seat and an air filling valve seat are set up, and the air inlet and outlet are designed separately. At the same time, the air filling and air release valves are divided into two one-way valves to form a control loop. The gas flow rate is adjusted by external auxiliary equipment based on the feedback from the auxiliary components according to the condition inside the cylinder.

[0020] 2. It is equipped with a venting valve seat and a filling valve seat, and features a multi-layered threaded series installation method. Multiple O-rings are also included to ensure gas sealing while maintaining precise flow control. The venting valve uses a needle valve as a flow control method, which can precisely control the flow rate by moving it up and down, enabling continuous and fine adjustment of the airflow. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the inner closed bottom mounting of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal enclosed installation structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal installation structure of the air-filled valve seat of this utility model;

[0025] Figure 5 This is a schematic diagram of the internal installation structure of the vent valve seat of this utility model.

[0026] In the diagram: 10, inner enclosure; 20, gasket;

[0027] 30. Vent valve seat; 301. Hand-tightening seat; 302. Vent valve needle; 303. Compression nut; 304. Outlet valve seat; 305. Vent plug; 306. Vent plug;

[0028] 40. Inflation valve seat; 401. Copper pipe ferrule; 402. Folding limit block; 403. Adapter; 404. Sealing gasket; 405. Valve stem one; 406. Inlet valve stem; 407. Oxygen filling ferrule connector; 408. Spring. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1-5This utility model provides a technical solution: a multi-layer series one-way valve structure, including an inner seal 10, a gasket 20, a vent valve seat 30, a hand-tightening seat 301, a vent valve needle 302, a clamping nut 303, an outlet valve seat 304, a vent plug 305, a vent plug 306, an inflation valve seat 40, a copper pipe ferrule 401, a ferrule limiting block 402, an adapter 403, a sealing washer 404, a valve stem 405, an inlet valve stem 406, an oxygen filling ferrule connector 407, and a spring 408;

[0031] This one-way valve structure can increase the overall sealing performance of the valve. The specific implementation method is as follows:

[0032] The inner enclosure 10 is cylindrical, and gaskets 20 are symmetrically embedded on its surface. Holes are symmetrically arranged on the surface of the inner enclosure 10, and a vent valve seat 30 and an inflation valve seat 40 are respectively installed inside the holes. An outlet valve seat 304 is embedded on one side of the vent valve seat 30, and a vent plug 305 and a vent plug 306 are installed inside the outlet valve seat 304. The vent plug 305 is mounted on the surface of the vent plug 306. A clamping nut 303 is embedded inside the outlet valve seat 304. An air outlet valve needle 302 is installed inside the tightening nut 303, and the end of the air outlet valve needle 302 passes through the tightening nut 303 and is connected to a hand-tightening seat 301. An adapter 403 is installed on the end surface of the inflation valve seat 40. An air inlet valve rod 406 and a spring 408 are embedded inside the inflation valve seat 40. A valve rod 405 is connected to the end of the air inlet valve rod 406. A retaining block 402 is installed inside the adapter 403, and an oxygen filling retaining connector 407 is installed inside the end of the retaining block 402. The end surface of the oxygen filling retaining connector 407 is fitted with... A copper pipe clamp 401 is installed. A sealing gasket 404 is provided between the adapter 403 and the inflation valve seat 40. The inner sealing 10 has threads inside its hole, and the hole of the inner sealing 10 is threadedly connected to the vent valve seat 30 and the inflation valve seat 40 respectively. A gasket 20 is placed inside the hole of the inner sealing 10, and the gasket 20 is placed at the connection between the inner sealing 10 and the vent valve seat 30 and the inflation valve seat 40. The vent valve seat 30 is threadedly connected to the outlet valve seat 304. The outlet valve seat 304 is a hollow structure, and the vent plug 305 is placed... The bottom of the outlet valve seat 304, the vent plug 305, the vent valve seat 30 and the vent valve needle 302 are all provided with hollow structures, and the end surface of the vent valve needle 302 is provided with holes. The inflation valve seat 40 and the inner closure 10 are threadedly connected, and the end of the inflation valve seat 40 is threadedly connected to the adapter 403. The intake valve rod 406 is located inside the inflation valve seat 40 and the adapter 403. The adapter 403 and the ferrule limiting block 402 are threadedly connected, and the ferrule limiting block 402 and the copper tube ferrule 401 are threadedly connected.

[0033] By inserting the gasket 20 into the hole of the inner sealing 10, the vent valve seat 30 and the inflation valve seat 40 can be inserted into the hole of the inner sealing 10. At the same time, rotate the vent valve seat 30 and the inflation valve seat 40. The vent valve seat 30 and the inflation valve seat 40 and the inner hole of the inner sealing 10 are moved downwards by the threads, so that the vent valve seat 30 and the inflation valve seat 40 are installed on the surface of the inner sealing 10. At the same time, the O-ring is placed between them. Meanwhile, the outlet valve seat 304 is installed inside the vent valve seat 30 by the threads. The vent plug 306 is placed in the outlet valve seat 304. Then the vent plug 305 is placed in the outlet valve seat 304. Then tighten the clamping nut 303. Place the O-ring inside the clamping nut 303. The bottom of the vent valve needle 302 can be inserted into the outlet valve seat 304. Finally, the hand-tightening seat 301 is installed on the surface of the vent valve needle 302 and connected to the opening of the vent valve needle 302 by the external device.

[0034] Insert the intake valve stem 406 into the interior of the inflation valve seat 40 from the bottom, and place an O-ring between the intake valve stem 406 and the inflation valve seat 40. The adapter 403 is fitted onto the outside of the inflation valve seat 40, and the spring 408 is installed inside the inflation valve seat 40. The valve stem 405 is threaded onto the end of the intake valve stem 406. A sealing washer 404 is placed at the end of the inflation valve seat 40, and the ferrule limiting block 402 is placed at the end of the sealing washer 404. The adapter 403 is fitted onto the outside of the inflation valve seat 40 and the ferrule limiting block 402 to fix them together. Then, the oxygen filling ferrule connector 407 is threaded onto the surface of the ferrule limiting block 402, and the copper tube ferrule 401 is threaded onto the oxygen filling ferrule connector 407.

[0035] Working principle: When using this multi-layer series one-way valve structure, valve stem 405, air inlet valve stem 406, oxygen filling ferrule connector 407 and spring 408 are set, which can increase the overall sealing of the valve and increase its overall practicality.

[0036] 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 multi-layer series one-way valve structure, including an inner closure (10), wherein the inner closure (10) is configured as a cylindrical structure, and gaskets (20) are symmetrically embedded on the surface of the inner closure (10); Its features are: The inner enclosure (10) has symmetrical holes on its surface, and a venting valve seat (30) and an inflation valve seat (40) are respectively provided inside the holes of the inner enclosure (10). An outlet valve seat (304) is embedded in one side of the venting valve seat (30), and a vent plug (305) and a vent plug (306) are provided inside the outlet valve seat (304). The vent plug (305) is installed on the surface of the vent plug (306). A clamping nut (303) is embedded in the outlet valve seat (304), and an air outlet valve needle (302) is installed inside the clamping nut (303). The end of the air outlet valve needle (302) passes through the clamping nut (304). 3) A hand-tightening seat (301) is connected. An adapter (403) is installed on the end surface of the inflation valve seat (40). An air intake valve rod (406) and a spring (408) are embedded in the inflation valve seat (40). A valve rod (405) is connected to the end of the air intake valve rod (406). A retaining block (402) is installed inside the adapter (403). An oxygen filling retaining connector (407) is installed inside the end of the retaining block (402). A copper tube retaining ferrule (401) is fitted on the end surface of the oxygen filling retaining connector (407). A sealing gasket (404) is provided between the adapter (403) and the inflation valve seat (40).

2. The multi-layer series one-way valve structure according to claim 1, characterized in that: The inner closure (10) has a threaded hole inside, and the hole of the inner closure (10) is threadedly connected to the vent valve seat (30) and the inflation valve seat (40) respectively.

3. The multi-layer series one-way valve structure according to claim 1, characterized in that: The gasket (20) is disposed inside the hole of the inner closure (10), and the gasket (20) is disposed at the connection between the inner closure (10) and the vent valve seat (30) and the inflation valve seat (40).

4. The multi-layer series one-way valve structure according to claim 1, characterized in that: The vent valve seat (30) and the outlet valve seat (304) are connected by threads. The outlet valve seat (304) is configured as a hollow structure, and the vent plug (305) is located at the bottom of the outlet valve seat (304).

5. The multi-layer series one-way valve structure according to claim 1, characterized in that: Both the vent valve seat (30) and the vent valve needle (302) are provided with a hollow structure, and the end surface of the vent valve needle (302) is provided with a hole.

6. The multi-layer series one-way valve structure according to claim 1, characterized in that: The inflation valve seat (40) is threadedly connected to the inner closure (10), and the end of the inflation valve seat (40) is threadedly connected to the adapter (403). The air intake valve rod (406) is located inside the inflation valve seat (40) and the adapter (403).

7. The multi-layer series one-way valve structure according to claim 1, characterized in that: The adapter (403) and the ferrule limiting block (402) are connected by threads, and the ferrule limiting block (402) and the copper tube ferrule (401) are connected by threads.

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