A hand valve with filter

Abstract

The application discloses a manual valve with filtering function, which comprises a valve body, a valve cavity arranged in the top of the valve body, an air inlet valve port and an air outlet valve port arranged on the valve body, a first mounting hole arranged in the valve body, a valve seat screwed into the first mounting hole from bottom to top, an inner clamping groove arranged on the sidewall of an inner locking section, an outer clamping groove arranged on the inner wall of an outer locking hole, the valve seat and the valve body locked by an inner clamping spring, a second mounting hole arranged in the valve seat, the second mounting hole comprising a second sealing hole and a second threaded hole coaxially connected in sequence from bottom to top, a valve rod rotatably arranged in the second sealing hole, the valve rod being driven to rotate by a wrench, a valve core bottom threadedly connected with the second threaded hole, the valve core top extending into the valve cavity, the valve rod driving the valve core to rotate, the valve core top being provided with a valve flap, and a filter element arranged in the valve cavity and sleeved with the valve core top.

Description

Technical Field

[0001] This invention relates to the field of valves, and more specifically to a manual valve with built-in filter. Background Technology

[0002] Hydrogen is typically added to high-pressure hydrogen storage cylinders in vehicles via a filling pipeline. The filling pipeline is connected in series with valves and filters. The filters are used to filter the added hydrogen. Connecting filters in series with the filling pipeline increases the number of connection points on the pipeline, which increases the risk of gas leakage. It also increases manufacturing costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a manual valve with built-in filter.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: a manual valve with built-in filter, comprising: a valve body, characterized in that: a valve cavity is provided in the top of the valve body, an air inlet is provided on the top of the valve body, and an air outlet is provided on the side wall of the top of the valve body, both the air inlet and the air outlet being connected to the valve cavity; a vertically arranged first mounting hole is provided in the valve body, the first mounting hole being located below the valve cavity and connected to the valve cavity; the first mounting hole is formed by an external locking hole, a first sealing hole, and a first threaded hole coaxially connected from bottom to top, the diameter of the external locking hole being larger than that of the first sealing hole, and the diameter of the first sealing hole being larger than that of the first sealing hole. The valve seat is larger than the first threaded hole. From bottom to top, the outer wall of the valve seat is divided into an inner locking section, a first sealing section, and a first threaded section. The valve seat is screwed into the first mounting hole from bottom to top. The first threaded section is threadedly connected to the first threaded hole. A sealing ring is provided between the first sealing section and the first sealing hole. An inner groove is provided on the side wall of the inner locking section, and an outer groove is provided on the inner wall of the outer locking hole. An inner retaining spring is installed between the inner and outer retaining grooves. The outer side of the inner retaining spring is engaged in the outer retaining groove, and the inner side of the inner retaining spring is engaged in the inner retaining groove. The inner retaining spring locks the valve seat in the first mounting hole. A vertically arranged second mounting hole is provided in the valve seat. The mounting hole, from bottom to top, is formed by the coaxial connection of a second sealing hole and a second threaded hole. The diameter of the second sealing hole is smaller than that of the second threaded hole. The valve stem is installed in the second sealing hole, and a sealing ring is provided between the valve stem and the second sealing hole for sealing. The valve stem can rotate within the second sealing hole. An annular boss is provided at the lower end of the second sealing hole to support the valve stem. A wrench hole is provided on the bottom end face of the valve stem, and a wrench can be inserted into the wrench hole through the annular boss. The wrench drives the valve stem to rotate. The bottom of the valve core is threadedly connected to the second threaded hole, and the top of the valve core extends into the valve cavity. A drive head is provided at the top of the valve stem. The valve core has a drive hole at its bottom, into which the drive head is inserted. This allows the valve stem to rotate the valve core by engaging the drive head and the drive hole. A valve disc is located at the top of the valve core. After the valve stem drives the valve core to rotate, the valve core can move up and down within the valve seat. When the valve core moves upward, the valve disc can seal the inlet valve port. A cylindrical metal filter element is installed in the valve cavity. The filter element is fitted onto the outer side of the top of the valve core, with its top port abutting against the top of the valve cavity and looping around the outer side of the inlet valve port. The bottom port of the filter element abuts against the top of the valve seat. Gas entering through the inlet valve port is filtered by the filter element before flowing out through the outlet valve port.

[0005] Furthermore, in the aforementioned manual valve with built-in filter, two first sealing grooves are formed on the side wall of the first sealing section, and a sealing ring and a retaining ring are fitted in each first sealing groove, with the retaining ring located below the sealing ring.

[0006] Furthermore, in the aforementioned manual valve with built-in filter, two second sealing grooves are provided on the side wall of the valve stem, and each second sealing groove is fitted with a sealing ring and a retaining ring, with the retaining ring located below the sealing ring.

[0007] Furthermore, in the aforementioned manual valve with built-in filter, a non-metallic gasket is provided between the top port of the filter element and the top of the valve chamber, and a non-metallic gasket is provided between the bottom port of the filter element and the top of the valve seat.

[0008] Furthermore, in the aforementioned manual valve with built-in filter, an installation notch is provided on the bottom surface of the valve body, and the clamp holes on both ends of the inner retaining spring are exposed through the installation notch, so that the inner retaining spring can be tightened by clamps, so that the inner retaining spring can be disengaged from the outer retaining groove, thereby unlocking the valve seat.

[0009] The advantages of this invention are as follows: The self-filtering manual valve integrates the filter element into the valve body, allowing gas to be filtered without the need for a series filter in the pipeline. This reduces the number of pipeline connections, lowers the possibility of gas leakage, improves safety, and reduces manufacturing costs. The valve seat can move up and down after rotating in the valve body. After the valve seat is locked by the internal snap ring, it cannot rotate because it cannot move up and down, thus providing a thread-locking function. This solves the problem of the valve seat rotating when the valve stem rotates, thereby avoiding leakage caused by loose valve threads and improving valve safety. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the manual valve with built-in filter.

[0011] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0013] like Figure 1 , Figure 2As shown, a manual valve with built-in filter includes: a valve body 1, a valve cavity 2 in the top of the valve body 1, an air inlet 3 on the top of the valve body 1, and an air outlet 4 on the side wall of the top of the valve body 1. Both the air inlet 3 and the air outlet 4 are connected to the valve cavity 2. A vertically arranged first mounting hole is provided in the valve body 1, located below and connected to the valve cavity 2. The first mounting hole is formed by three parts coaxially connected from bottom to top: an external locking hole 5, a first sealing hole 6, and a first threaded hole 7. The diameter of the external locking hole 5 is larger than that of the first sealing hole 6, and the diameter of the first sealing hole 6 is larger than that of the first threaded hole 7. A valve seat 8... The outer wall is divided into an inner locking section 9, a first sealing section 10, and a first threaded section 11 from bottom to top. The valve seat 8 is screwed into the first mounting hole from bottom to top. The first threaded section 11 is threadedly connected to the first threaded hole 7. A sealing ring is provided between the first sealing section 10 and the first sealing hole 6. An inner groove 14 is provided on the side wall of the inner locking section 9, and an outer groove 15 is provided on the inner wall of the outer locking hole 5. An inner retaining spring 16 is installed between the inner groove 14 and the outer groove 15. The outer side of the inner retaining spring 16 is engaged in the outer groove 15, and the inner side of the inner retaining spring 16 is engaged in the inner groove 14. The valve seat 8 can be locked in the first mounting hole by the inner retaining spring 16. The valve seat 8 has a vertically arranged second mounting hole, which is formed by a second sealing hole 17 and a second threaded hole 18 coaxially connected from bottom to top. The diameter of the second sealing hole 17 is smaller than that of the second threaded hole 18. The valve stem 19 is installed in the second sealing hole 17, and a sealing ring is provided between the valve stem 19 and the second sealing hole 17 for sealing. The valve stem 19 can rotate in the second sealing hole 17. An annular boss 28 is provided in the lower end of the second sealing hole 17 to support the valve stem 19. A wrench hole 21 is provided on the bottom end face of the valve stem 19. A wrench can pass through the annular boss 28 and be inserted into the wrench hole 21. The valve stem 19 can be driven to rotate, and the valve core 20 is screwed into the second threaded hole 18 from top to bottom. The bottom of the valve core 20 is threadedly connected to the second threaded hole 18, and the top of the valve core 20 extends into the valve cavity 2. The top of the valve stem 19 is provided with a drive head 22, and the bottom of the valve core 20 is provided with a drive hole 23. The drive head 22 is inserted into the drive hole 23, so that the valve stem 19 can rotate together with the valve core 20 through the cooperation of the drive head 22 and the drive hole 23. Usually, a protruding edge is provided on one side of the drive head 22, and a long groove is provided on the side wall of the drive hole 23. The protruding edge is inserted into the long groove, so that the drive head 22 and the drive hole 23 can cooperate to transmit power.A valve disc 24 is provided on the top of the valve core 20. After the valve stem 19 drives the valve core 20 to rotate, the bottom of the valve core 20 is threadedly connected to the second threaded hole 18, allowing the valve core 20 to move up and down in the valve seat 8. After the valve core 20 moves upward, the valve disc 24 can seal the inlet valve port 3, allowing the inlet valve port 3 to be closed. A cylindrical metal filter element 25 is provided in the valve cavity 2. The filter element 25 is fitted onto the outer side of the top of the valve core 20, with its top end abutting against the top of the valve cavity 2 and looping around the outer side of the inlet valve port 3. The bottom end of the filter element 25 abuts against the top of the valve seat 8. The gas entering from the inlet valve port 3 is filtered by the filter element 25 before flowing out from the outlet valve port 4.

[0014] After the valve seat 8 rotates in the valve body 1, it can move up and down. After the valve seat 8 is locked by the internal snap ring 16, the valve seat 8 cannot rotate because it cannot move up and down. It has the function of preventing loosening of the thread and solves the problem of the valve seat 8 rotating when the valve stem 19 rotates. This avoids leakage caused by loosening of the valve thread and improves the safety of the valve.

[0015] A mounting groove is provided on the top of the valve core 20, and the valve disc 24 is placed in the mounting groove. A through hole is provided in the center of the valve disc 24. A ring-shaped convex edge is provided at the bottom of the mounting groove. The bottom of the valve disc 24 is sealed by abutting against the ring-shaped convex edge. The through hole in the center of the valve disc 24 is provided to allow the air in the mounting groove to be discharged when the valve disc 24 is installed, so as to facilitate the valve disc 24 to be inserted.

[0016] In this embodiment, two first sealing grooves 29 are formed on the side wall of the first sealing section 10. Each first sealing groove 29 is fitted with a sealing ring 12 and a retaining ring 13, with the retaining ring 13 located below the sealing ring 12.

[0017] Two second sealing grooves 30 are provided on the side wall of the valve stem 19. Each second sealing groove 30 is fitted with a sealing ring 12 and a retaining ring 13, with the retaining ring 13 located below the sealing ring 12.

[0018] When installing the filter element 25, it is inevitable that the filter element 25 will rotate. In order to prevent the two ends of the filter element 25 from wearing and generating metal debris, a non-metallic gasket 26 is placed between the top port of the filter element 25 and the top of the valve chamber 2, and a non-metallic gasket 26 is placed between the bottom port of the filter element 25 and the top of the valve seat 8.

[0019] An installation notch 27 is provided on the bottom end face of the valve body 1. The clamp holes on both ends of the inner retaining spring 16 are exposed through the installation notch 27, so that the inner retaining spring 16 can be tightened by clamps, so that the inner retaining spring 16 can be disengaged from the outer retaining groove 15, thereby unlocking the valve seat 8.

Claims

1. A manual valve with built-in filter, comprising: A valve body, characterized in that: a valve cavity is provided in the top of the valve body; an air inlet is provided on the top of the valve body; an air outlet is provided on the side wall of the top of the valve body; both the air inlet and the air outlet are connected to the valve cavity; a vertically arranged first mounting hole is provided in the valve body, located below the valve cavity and connected to the valve cavity; the first mounting hole is formed by an outer locking hole, a first sealing hole, and a first threaded hole coaxially connected from bottom to top; the diameter of the outer locking hole is larger than that of the first sealing hole; the diameter of the first sealing hole is larger than that of the first threaded hole; and the outer side wall of the valve seat is divided into an inner locking section from bottom to top. The valve seat is screwed into the first mounting hole from bottom to top, consisting of a first sealing section and a first threaded section. The first threaded section is threadedly connected to the first threaded hole. A sealing ring is provided between the first sealing section and the first sealing hole. An inner groove is provided on the side wall of the inner locking section, and an outer groove is provided on the inner wall of the outer locking hole. An inner retaining spring is installed between the inner and outer grooves, with the outer side of the inner retaining spring engaged in the outer groove and the inner side of the inner retaining spring engaged in the inner groove. The inner retaining spring locks the valve seat in the first mounting hole. The valve seat has a vertically arranged second mounting hole, which, from bottom to top, consists of a second sealing hole, a second... The valve stem is formed by coaxially connecting threaded holes. The diameter of the second sealing hole is smaller than that of the second threaded hole. The valve stem is installed in the second sealing hole, and a sealing ring is provided between the valve stem and the second sealing hole for sealing. The valve stem can rotate in the second sealing hole. An annular boss is provided in the lower end of the second sealing hole to support the valve stem. A wrench hole is provided on the bottom end face of the valve stem. A wrench can pass through the annular boss and be inserted into the wrench hole. The wrench can drive the valve stem to rotate. The bottom of the valve core is threadedly connected to the second threaded hole, and the top of the valve core extends into the valve cavity. A drive head is provided at the top of the valve stem, and a drive mechanism is provided at the bottom of the valve core. The valve stem is inserted into the drive hole, allowing the valve core to rotate along with the valve stem through the interaction between the drive head and the drive hole. A valve disc is located on the top of the valve core. After the valve stem drives the valve core to rotate, the valve core can move up and down in the valve seat. After the valve core moves upward, the valve disc can seal the inlet valve port. A cylindrical metal filter element is installed in the valve cavity. The filter element is fitted on the outer side of the top of the valve core, with the top port of the filter element abutting against the top of the valve cavity and looping around the outer side of the inlet valve port. The bottom port of the filter element abuts against the top of the valve seat. The gas entering from the inlet valve port is filtered by the filter element before flowing out from the outlet valve port.

2. The manual valve with built-in filter according to claim 1, characterized in that: Two first sealing grooves are formed on the side wall of the first sealing section, and a sealing ring and a retaining ring are fitted in each first sealing groove, with the retaining ring located below the sealing ring.

3. A manual valve with built-in filter according to claim 1 or 2, characterized in that: Two second sealing grooves are provided on the side wall of the valve stem. Each second sealing groove is fitted with a sealing ring and a retaining ring, with the retaining ring located below the sealing ring.

4. A manual valve with built-in filter according to claim 1 or 2, characterized in that: A non-metallic gasket is placed between the top port of the filter element and the top of the valve chamber, and a non-metallic gasket is placed between the bottom port of the filter element and the top of the valve seat.

5. A manual valve with built-in filter according to claim 1 or 2, characterized in that: An installation notch is provided on the bottom surface of the valve body. The caliper holes on both ends of the inner retaining spring are exposed through the installation notch, so that the inner retaining spring can be tightened by the caliper, so that the inner retaining spring can be disengaged from the outer retaining groove, thereby unlocking the valve seat.

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