Fuel valve

Abstract

The utility model relates to the technical field of fuel valves, and discloses a fuel valve which comprises a valve body, a valve seat is arranged in the valve body, a first O-shaped ring is embedded in the outer side of the valve seat, a valve seat gasket is arranged at the bottom end of the side wall of the valve seat, a sleeve is arranged in the valve body, and the sleeve is located at the top of the valve seat. A second O-shaped ring and a valve seat sealing ring are embedded into the top of the valve seat, the valve seat sealing ring is located at the top of the second O-shaped ring, a protruding block is integrally machined on one side of the top of the valve seat, a valve element is arranged in the valve body, and the top of the valve element is connected with a connecting plate through threads. And meanwhile, the top of the valve seat is provided with a second O-shaped ring, and the second O-shaped ring and the valve seat sealing ring form double-layer sealing, so that the sealing performance is improved, and leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel valves, in particular to a fuel valve. Background Art

[0002] The fuel inlet valve is a device that allows the medium (liquid, gas, powder) in the piping and equipment to flow or stop and control its flow rate. The fuel in the valve refers to a combustible substance that can generate heat energy, power and light energy when burned, mainly carbon-containing substances or hydrocarbons. According to the form, it can be divided into solid fuel (such as coal, charcoal, wood); liquid fuel (such as gasoline, kerosene, oil); gas fuel (such as natural gas, coal gas, biogas). The sealing structure of the fuel valve currently used in the market is relatively simple. Once the sealing structure fails, it will cause leakage. For this reason, a fuel valve is proposed. Utility Model Content

[0003] The utility model aims to provide a fuel valve to solve the problem in the background art that the fuel valves currently used in the market have a relatively simple sealing structure and once the sealing structure fails, leakage will occur.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fuel valve comprises a valve body, a valve seat is arranged inside the valve body, a first O-ring is embedded on the outer side of the valve seat, a valve seat gasket is arranged at the bottom end of the side wall of the valve seat, a sleeve is arranged inside the valve body and the sleeve is located on the top of the valve seat, a second O-ring and a valve seat sealing ring are respectively embedded on the top of the valve seat, the valve seat sealing ring is located on the top of the second O-ring, a raised block is integrally processed on one side of the top of the valve seat, a valve core is arranged inside the valve body, a connecting plate is connected to the top of the valve core by threads, and the valve core and the connecting plate A first sealing structure is arranged between the valve body and the valve core, a connecting pipe is connected to the top of the valve body by bolts, a protective structure is arranged on the outside of the connecting pipe, a second sealing structure is arranged between the connecting pipe and the top of the valve body, a valve stem is arranged on the top of the connecting plate, a hexagonal shaft is arranged at one end of the outer side of the valve stem, a bellows is arranged on the outside of the valve stem, and a connecting structure is arranged on the top of the connecting pipe. When in use, when the valve core moves downward, the raised block on one side of the top of the valve seat will be embedded in the interior of the valve core, and at the same time, a second O-ring is arranged on the top of the valve seat to form a double-layer seal with the valve seat sealing ring, thereby improving the sealing performance and avoiding leakage.

[0005] Preferably, the connection structure includes a pressure plate, which is installed on the top of the connecting pipe. The top of the connecting pipe is connected to the valve cover by threads, gaskets are provided on the upper and lower sides of the pressure plate, and a seventh O-ring is provided on the outer side of the pressure plate. The inner wall of the valve cover is sequentially provided with a guide sleeve, a gasket, a packing and a packing gland, and the inner and outer sides of the packing gland are respectively provided with an eighth O-ring and a ninth O-ring. The top of the valve cover is connected to a butterfly pressure plate by bolts. When in use, the valve cover is installed on the top of the connecting pipe, and the valve stem is fixed by the valve cover. At the same time, the gasket, packing and packing gland on the inner wall of the valve cover will improve the sealing of the connection.

[0006] Preferably, the first sealing structure includes a sealing ring gasket, which is located between the valve core and the connecting plate, a third O-ring is embedded in the outer side of the valve core, a fourth O-ring is embedded in the side wall of the sealing ring gasket, and sealing rings are sleeved on the upper and lower sides of the sealing ring gasket. When in use, the sealing rings are installed on the upper and lower sides of the sealing ring gasket to ensure that there is no leakage in the forward and reverse directions.

[0007] Preferably, the protection structure includes two protection tubes, which are respectively sleeved on the outside of the connecting pipe. A connecting sleeve is provided at the bottom end of the two protection tubes. A threaded rod passes through the two connecting sleeves. The outer sides of the threaded rods are threadedly connected with nuts. When in use, the protection tube and the connecting sleeve are sleeved on the outside of the connecting pipe, and then the threaded rod is passed through the connecting sleeve, so as to fix the protection tube and the connecting sleeve, and the connecting pipe is protected by the protection tube and the connecting sleeve.

[0008] Preferably, the second sealing structure includes a valve cover gasket, which is located between the valve body and the connecting pipe. The inner wall of the valve body is embedded with a fifth O-ring and a sixth O-ring, and the sixth O-ring is located at the lower side of the fifth O-ring. When the valve body is connected to the connecting pipe, the fifth O-ring and the sixth O-ring will improve the sealing of the valve and also improve the stability of the valve core.

[0009] Preferably, a groove is formed on the side wall of the pressure plate, and the seventh O-ring is located inside the groove, so that the seventh O-ring can be easily installed, thereby achieving sealing through the seventh O-ring.

[0010] Preferably, through holes are provided on both sides of the connecting sleeve, and the threaded rods pass through the through holes, and the two protective tubes are installed and fixed by the threaded rods.

[0011] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0012] The utility model provides a valve seat, a first O-ring, a valve seat gasket, a sleeve and a second O-ring. When in use, the valve stem drives the connecting plate to move, and the connecting plate drives the valve core to move up and down, thereby controlling the flow rate. At the same time, a sealing ring gasket is provided between the valve core and the connecting plate, and sealing rings are provided on the upper and lower sides of the sealing ring gasket, thereby ensuring that there is no leakage in the forward and reverse directions. At the same time, a second O-ring and a valve seat sealing ring are provided on the top of the valve seat inside the valve body. The second O-ring and the valve seat sealing ring form a double seal, thereby improving the sealing performance and avoiding leakage. When the valve body is connected to the connecting pipe, the inner wall of the valve body is provided with a fifth O-ring and a sixth O-ring, thereby achieving a balanced structure, increasing the stability of the valve core, and improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the protection structure of the utility model;

[0016] Figure 3 For the utility model Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0017] Figure 4 For the utility model Figure 1 A schematic diagram of the enlarged structure of B;

[0018] Figure 5 For the utility model Figure 1 Schematic diagram of the enlarged structure of C in the middle;

[0019] Figure 6 For the utility model Figure 1 Schematic diagram of the enlarged structure of D in the figure.

[0020] Explanation of the accompanying drawings: 1. valve body; 2. valve seat; 3. first O-ring; 4. valve seat gasket; 5. sleeve; 6. second O-ring; 7. valve seat sealing ring; 8. raised block; 9. valve core; 10. connecting plate; 11. sealing ring gasket; 12. third O-ring; 13. fourth O-ring; 14. sealing ring; 15. connecting pipe; 16. protective pipe; 17. connecting sleeve; 18. threaded rod; 19. nut; 20. valve cover gasket; 21. fifth O-ring; 22. sixth O-ring; 23. valve stem; 24. hexagonal shaft; 25. bellows; 26. pressure plate; 27. valve cover; 28. gasket; 29. ​​seventh O-ring; 30. guide sleeve; 31. gasket; 32. packing; 33. packing gland; 34. eighth O-ring; 35. ninth O-ring; 36. butterfly pressure piece;. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0026] Example

[0027] In the prior art, the fuel valve sealing structure currently used in the market is relatively simple. Once the sealing structure fails, it will cause leakage problems.

[0028] See also Figure 1-6The utility model provides a technical solution: a fuel valve, including a valve body 1, a valve seat 2 is arranged inside the valve body 1, a first O-ring 3 is embedded on the outer side of the valve seat 2, a valve seat gasket 4 is arranged at the bottom end of the side wall of the valve seat 2, a sleeve 5 is arranged inside the valve body 1 and the sleeve 5 is located on the top of the valve seat 2, a second O-ring 6 and a valve seat sealing ring 7 are respectively embedded on the top of the valve seat 2, the valve seat sealing ring 7 is located on the top of the second O-ring 6, a convex block 8 is integrally processed on one side of the top of the valve seat 2, a valve core 9 is arranged inside the valve body 1, a connecting plate 10 is connected to the top of the valve core 9 by threads, a first sealing structure is arranged between the valve core 9 and the connecting plate 10, the first sealing structure includes a sealing ring gasket 11, and the sealing ring gasket 11 is located between the valve core 9 and the connecting plate 10 A third O-ring 12 is embedded in the outer side of the valve core 9, a fourth O-ring 13 is embedded in the side wall of the sealing ring gasket 11, and sealing rings 14 are sleeved on the upper and lower sides of the sealing ring gasket 11. When in use, the sealing ring 14 is installed on the upper and lower sides of the sealing ring gasket 11 to ensure that there is no leakage in the forward and reverse directions. A connecting pipe 15 is connected to the top of the valve body 1 by bolts, and a protective structure is arranged on the outer side of the connecting pipe 15. The protective structure includes two protective tubes 16, and the two protective tubes 16 are respectively sleeved on the outer side of the connecting pipe 15. A connecting sleeve 17 is arranged at the bottom end of the two protective tubes 16. A threaded rod 18 runs through the two connecting sleeves 17. Through holes are opened on both sides of the connecting sleeve 17. The threaded rod 18 runs through the through holes. The two protective tubes 16 are installed and fixed by the threaded rod 18. The outer side of the threaded rod 18 is threadedly connected with a nut 19. When in use, the protective tube 16 and the connecting sleeve 17 are sleeved on the outer side of the connecting pipe 15, and then the threaded rod 18 passes through the connecting sleeve 17 to fix the protective tube 16 and the connecting sleeve 17. The connecting pipe 15 is protected by the protective tube 16 and the connecting sleeve 17. A second sealing structure is arranged between the connecting pipe 15 and the top of the valve body 1. The second sealing structure includes a valve cover gasket 20. The valve cover gasket 20 is located between the valve body 1 and the connecting pipe 15. The inner wall of the valve body 1 is embedded with a fifth O-ring 21 and a sixth O-ring 22. The sixth O-ring 22 is located at the lower side of the fifth O-ring 21. When the valve body 1 is connected to the connecting pipe 15, the fifth O-ring 21 and the sixth O-ring 22 will improve the sealing performance of the valve, and also improve In order to improve the stability of the valve core, a valve stem 23 is arranged on the top of the connecting plate 10, a hexagonal shaft 24 is arranged on the outer end of the valve stem 23, a bellows 25 is arranged on the outer side of the valve stem 23, a connecting structure is arranged on the top of the connecting pipe 15, and the connecting structure includes a pressure plate 26, which is installed on the top of the connecting pipe 15, and a valve cover 27 is connected to the top of the connecting pipe 15 by threads, gaskets 28 are arranged on the upper and lower sides of the pressure plate 26, and a seventh O-ring 29 is arranged on the outer side of the pressure plate 26, and a groove is opened on the side wall of the pressure plate 26, and the seventh O-ring 29 is located inside the groove, which is convenient for installing the seventh O-ring 29, so as to seal by the seventh O-ring 29, and a guide sleeve 30, a gasket 31, a packing 32 and a packing gland 33 are arranged on the inner wall of the valve cover 27 in sequence.The inner and outer sides of the packing gland 33 are respectively provided with an eighth O-ring 34 and a ninth O-ring 35. The top of the valve cover 27 is connected with a butterfly-shaped pressing piece 36 by bolts. When in use, the valve cover 27 is installed on the top of the pipe 15, and the valve stem 23 is fixed by the valve cover 27. At the same time, the gasket 31, the packing 32 and the packing gland 33 on the inner wall of the valve cover 27 will improve the sealing of the connection. When the valve core 9 moves downward, the raised block 8 on one side of the top of the valve seat 2 will be embedded in the inside of the valve core 9. At the same time, the top of the valve seat 2 is provided with a second O-ring 6 and the valve seat sealing ring 7 to form a double-layer seal, thereby improving the sealing and avoiding leakage.

[0029] Working principle or structural principle, when in use, the connecting plate 10 is driven to move by the valve stem 23, and the connecting plate 10 will drive the valve core 9 to move up and down, so as to control the flow rate. At the same time, a sealing ring gasket 11 is arranged between the valve core 9 and the connecting plate 10, and sealing rings 14 are arranged on the upper and lower sides of the sealing ring gasket 11, so as to ensure that there is no leakage in the forward and reverse directions. At the same time, a second O-ring 6 and a valve seat sealing ring 7 are arranged on the top of the valve seat 2 inside the valve body 1, and the second O-ring 6 and the valve seat sealing ring 7 form a double seal, so as to improve the sealing performance and avoid leakage. When the valve body 1 is connected to the connecting pipe 15, the inner wall of the valve body 1 is provided with a fifth O-ring 21 and a sixth O-ring 22, so as to achieve a balanced structure, increase the stability of the valve core, and also improve the sealing performance.

[0030] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0031] Those skilled in the art will appreciate that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0032] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel valve, comprising a valve body (1), characterized in that: The valve body (1) is provided with a valve seat (2) inside, a first O-ring (3) is embedded on the outside of the valve seat (2), a valve seat gasket (4) is provided at the bottom end of the side wall of the valve seat (2), a sleeve (5) is provided inside the valve body (1) and the sleeve (5) is located on the top of the valve seat (2), a second O-ring (6) and a valve seat sealing ring (7) are respectively embedded on the top of the valve seat (2), the valve seat sealing ring (7) is located on the top of the second O-ring (6), a protrusion (8) is integrally processed on one side of the top of the valve seat (2), a valve core (9) is provided inside the valve body (1), and the valve core (9 ) is connected to a connecting plate (10) at the top by threads, a first sealing structure is arranged between the valve core (9) and the connecting plate (10), a connecting pipe (15) is connected to the top of the valve body (1) by bolts, a protective structure is arranged on the outside of the connecting pipe (15), a second sealing structure is arranged between the connecting pipe (15) and the top of the valve body (1), a valve stem (23) is arranged at the top of the connecting plate (10), a hexagonal shaft (24) is arranged at one end of the outside of the valve stem (23), a bellows (25) is arranged on the outside of the valve stem (23), and a connecting structure is arranged at the top of the connecting pipe (15).

2. A fuel valve according to claim 1, characterized in that: The connection structure comprises a pressure plate (26), wherein the pressure plate (26) is mounted on the top of the connecting pipe (15), the top of the connecting pipe (15) is connected to a valve cover (27) by means of threads, gaskets (28) are arranged on the upper and lower sides of the pressure plate (26), a seventh O-ring (29) is arranged on the outer side of the pressure plate (26), a guide sleeve (30), a gasket (31), a packing (32) and a packing gland (33) are arranged on the inner wall of the valve cover (27) in sequence, an eighth O-ring (34) and a ninth O-ring (35) are arranged on the inner and outer sides of the packing gland (33) respectively, and a butterfly pressure plate (36) is connected to the top of the valve cover (27) by means of bolts.

3. A fuel valve according to claim 1, characterized in that: The first sealing structure comprises a sealing ring gasket (11), wherein the sealing ring gasket (11) is located between the valve core (9) and the connecting plate (10), a third O-ring (12) is embedded in the outer side of the valve core (9), a fourth O-ring (13) is embedded in the side wall of the sealing ring gasket (11), and sealing rings (14) are sleeved on both the upper and lower sides of the sealing ring gasket (11).

4. A fuel valve according to claim 1, characterized in that: The protection structure comprises two protection tubes (16), the two protection tubes (16) are respectively sleeved on the outside of the connecting tube (15), the bottom ends of the two protection tubes (16) are provided with connecting sleeves (17), a threaded rod (18) passes through the two connecting sleeves (17), and the outer side of the threaded rod (18) is threadedly connected with a nut (19).

5. A fuel valve according to claim 1, characterized in that: The second sealing structure comprises a valve cover gasket (20), wherein the valve cover gasket (20) is located between the valve body (1) and the connecting pipe (15), and a fifth O-ring (21) and a sixth O-ring (22) are embedded in the inner wall of the valve body (1), and the sixth O-ring (22) is located at the lower side of the fifth O-ring (21).

6. A fuel valve according to claim 2, characterized in that: A groove is formed on the side wall of the pressure plate (26), and the seventh O-ring (29) is located inside the groove.

7. A fuel valve according to claim 4, characterized in that: Through holes are provided on both sides of the connecting sleeve (17), and the threaded rod (18) passes through the through holes.

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