Inflation valve with novel structure

Abstract

The utility model provides an inflation valve with a novel structure, which relates to the technical field of valve structures and comprises a valve body, a one-way unit, a cut-off unit, a driving part and a lubricating structure, the driving part and the lubricating structure are positioned above the cut-off unit, and the valve body is provided with an air inlet, a first mounting cavity, a second mounting cavity and an air outlet; the one-way unit is mounted in the first mounting cavity; the stop unit comprises a first valve seat, a first valve element and a valve rod which are mounted in the second mounting cavity, and the first valve element is connected to the bottom of the valve rod; the driving component comprises a driving seat and a driving shaft, the driving seat is connected to the second mounting cavity, a threaded hole is formed in the driving seat, the driving shaft is inserted and connected to the threaded hole, the bottom of the driving shaft is connected with the top of the valve rod, and the driving shaft can drive the valve rod to ascend and descend; the lubricating structure comprises an oil injection hole formed in the driving base, and the oil injection hole communicates with the interior of the threaded hole. Friction force, operation torque and abrasion between the driving seat and the driving shaft can be reduced, and the service life of a product is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of valve structure technology, and in particular to a novel air-filling valve. Background Technology

[0002] The air charging valve, a key control valve in high-pressure compressed air storage systems, is widely used in industries such as metallurgy. It is a combined functional valve mainly composed of a valve body, blind flange assembly, pressure measuring device, one-way unit, and shut-off unit. The air charging valve's inlet is connected to the air compressor, and air is charged to the high-pressure storage tank through the one-way unit and shut-off unit. The one-way unit ensures the unidirectional flow of high-pressure gas, preventing backflow when the air compressor stops supplying air. The shut-off unit safely isolates the storage tank from the air supply pipeline when the system is stopped or under maintenance. The pressure measuring device, including a pressure gauge, provides a clear view of the current pressure status on the storage tank side, facilitating system maintenance and management.

[0003] Since the working medium of the air-filling valve is high-pressure compressed air, the oil and moisture in the compressed air will form a viscous resistance mixture. The rust, sludge and iron filings generated in the pipeline can easily form a micro wedge effect on the sealing surface. At the moment of closing, the valve stem needs to overcome a large resistance. In the existing technology, the valve stem is connected to the valve body by a thread. During the opening and closing of the valve, the operating torque and wear between the valve stem and the valve body are large. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model adopts the following technical solution:

[0005] According to one aspect of the present invention, a novel inflation valve is provided, the novel inflation valve comprising:

[0006] The valve body is provided with an air inlet, a first mounting cavity, a second mounting cavity, and an air outlet in sequence along the airflow direction;

[0007] A unidirectional unit is installed in the first mounting cavity to control the gas flow direction in the first mounting cavity;

[0008] The shut-off unit includes a first valve seat, a first valve core, and a valve stem installed inside the second mounting cavity. The first valve core is connected to the bottom of the valve stem, and the valve stem drives the first valve core away from or towards the first valve seat to realize the opening and closing of the second mounting cavity and the air outlet.

[0009] The driving component, located above the stop unit, includes a driving seat and a driving shaft. The driving seat is connected to the second mounting cavity. The driving seat has a threaded hole. The driving shaft is inserted into and connected to the threaded hole. The bottom of the driving shaft is connected to the top of the valve stem. The driving shaft can drive the valve stem to move up and down.

[0010] The lubrication structure includes an oil injection hole provided in the drive seat, the oil injection hole communicating with the interior of the threaded hole.

[0011] According to one embodiment of the present invention, the cutoff unit further includes:

[0012] A valve sleeve is inserted into the interior of the second mounting cavity, with its bottom fitted around the outer periphery of the first valve seat. The valve stem and the first valve core are fitted around the inner periphery of the valve sleeve and move up and down along the axis of the valve sleeve.

[0013] A valve cover is sealed to the top inner periphery of the valve sleeve. The drive component is mounted on the top of the valve sleeve and the valve cover. The top of the valve stem passes through the valve cover and is connected to the drive shaft.

[0014] According to one embodiment of the present invention, the cutoff unit further includes:

[0015] The sealing structure includes an annular protrusion and a first sealing ring located in the middle of the inner wall of the second mounting cavity. The annular protrusion is sleeved on the outer periphery of the valve sleeve. The first sealing ring is connected to the annular protrusion and the outer periphery of the valve sleeve. The annular protrusion, the first sealing ring, and the valve sleeve together divide the second mounting cavity into two independent first sub-cavities and second sub-cavities. The shut-off unit is connected to the second sub-cavities.

[0016] According to one embodiment of the present invention, the inner wall of the valve sleeve is provided with the following components from top to bottom:

[0017] The first limiting protrusion abuts against the top of the first valve seat at its bottom. The first valve core can pass through the interior of the first limiting protrusion and abut against the inner wall of the first valve seat to disconnect the valve body.

[0018] The second limiting protrusion is always connected to the outer periphery of the first valve core to guide the first valve core.

[0019] The second sealing ring is connected between the second limiting protrusion and the first valve core to divide the interior of the valve sleeve into two independent first cavities and second cavities. The first cavity is located below the second cavity. The valve sleeve has a first through hole that connects the first cavity and the first sub-cavity so that high-pressure air enters the outlet through the air inlet, the first mounting cavity, the first sub-cavity and the first cavity.

[0020] According to one embodiment of the present invention, the first valve core has a first balance hole extending along its axial direction and a plurality of second balance holes located on the first balance hole. The first balance hole extends upward from the bottom of the first valve core, and the bottom of each second balance hole is connected to the first balance hole, and the top of each second balance hole extends outward and upward to the top of the first valve core and communicates with the second cavity.

[0021] According to one embodiment of the present invention, the unidirectional unit includes:

[0022] The second valve seat includes a valve seat body and a cylinder. The valve seat body is connected to the inner wall of the first mounting cavity and inserted into it. The bottom of the cylinder is connected to the top of the valve seat body.

[0023] A guide sleeve is fitted onto the inner circumference of the cylinder;

[0024] The second valve core is sleeved on the inner circumference of the guide sleeve;

[0025] A spring is connected between the guide sleeve and the second valve core;

[0026] The cylinder is provided with a second through hole, which connects to the second mounting cavity. The air inlet connects to the interior of the first mounting cavity and the second valve seat, so that high-pressure air enters the first mounting cavity through the air inlet and the second through hole.

[0027] According to one embodiment of the present invention, the first valve core includes a first sealing surface for cooperating with the first valve seat, the second valve core includes a second sealing surface for cooperating with the second valve seat, and the outer sides of the first sealing surface and the second sealing surface are provided with a hard alloy coating.

[0028] According to one embodiment of the present invention, the unidirectional unit further includes:

[0029] A pressure cap, the bottom of which abuts against the guide sleeve, the top of which is connected to the valve body, and the pressure cap having a first through hole along the axial direction, the first through hole communicating with the inner cavity of the second valve seat;

[0030] An exhaust valve is connected to the side of the first through hole away from the guide sleeve.

[0031] According to one embodiment of the present invention, the guide sleeve is T-shaped and includes:

[0032] The vertical part is inserted into the cylinder, and a guide hole is formed on its inner circumference. The second valve core is inserted into the guide hole and moves up and down along its axis.

[0033] The horizontal part, connected to the top of the vertical part and the cylinder, has a second through hole and a plurality of inclined holes. The second through hole is connected to the guide hole, and each of the inclined holes is connected to the interior of the second through hole and the second valve seat. The air inlet of the exhaust valve is connected to the interior of the second valve seat and the first mounting cavity through the first through hole and the second through hole.

[0034] According to one embodiment of the present invention, the novel inflation valve further includes a pressure measuring component for measuring the pressure of the valve body.

[0035] This utility model has the following advantages or beneficial effects:

[0036] This invention overcomes the huge pressure difference force by using the drive component and the lubrication structure, reduces the friction between the drive seat and the drive shaft, reduces the operating torque, reduces wear, and increases the service life of the product. Attached Figure Description

[0037] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0038] Figure 1 This is a cross-sectional view of a novel inflation valve according to an exemplary embodiment.

[0039] Figure 2 This is a schematic diagram showing the connection between the cut-off unit and the second mounting cavity according to an exemplary embodiment.

[0040] Figure 3 This is a schematic diagram illustrating the connection between a first valve core and a valve stem according to an exemplary embodiment.

[0041] Figure 4 This is a schematic diagram illustrating the connection between a unidirectional unit and a first mounting cavity according to an exemplary embodiment.

[0042] Figure 5 This is a schematic diagram of the structure of a second valve core according to an exemplary embodiment.

[0043] The reference numerals in the attached figures are explained as follows:

[0044] 1. Valve body; 11. Air inlet; 12. First mounting cavity; 13. Second mounting cavity; 131. First sub-cavity; 132. Second sub-cavity; 14. Air outlet;

[0045] 2. One-way unit; 21. Second valve seat; 211. Valve seat body; 212. Cylinder; 2121. Second through hole; 22. Guide sleeve; 221. Vertical part; 2211. Guide hole; 222. Horizontal part; 2221. Second through hole; 2222. Inclined hole; 23. Second valve core; 24. Spring; 25. Pressure cap; 251. First through hole; 26. Exhaust valve;

[0046] 3. Shutdown unit; 31. First valve seat; 32. First valve core; 321. First balance hole; 322. Second balance hole; 33. Valve stem; 34. Valve sleeve; 340. First through hole; 341. First limiting protrusion; 342. Second limiting protrusion; 343. Second sealing ring; 344. First cavity; 345. Second cavity; 35. Valve cover; 36. Sealing structure; 361. Annular protrusion; 362. First sealing ring;

[0047] 4. Drive component; 41. Drive base; 411. Threaded hole; 42. Drive shaft;

[0048] 5. Lubrication structure; 51. Oil injection hole;

[0049] 6. Hard alloy coating; 7. Pressure measuring component. Detailed Implementation

[0050] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0051] The terms “a,” “one,” “the,” and “the” are used to indicate the existence of one or more elements / components / etc.; the terms “include” and “have” are used to indicate an open-ended meaning of inclusion and that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0052] This utility model discloses a novel air-filled valve, comprising a valve body 1, a one-way unit 2, a shut-off unit 3, a drive component 4 located above the shut-off unit 3, and a lubrication structure 5. The valve body 1 has an air inlet 11, a first mounting cavity 12, a second mounting cavity 13, and an air outlet 14 arranged sequentially along the airflow direction. The one-way unit 2 is installed in the first mounting cavity 12 to control the gas flow direction within the first mounting cavity 12. The shut-off unit 3 includes a first valve seat 31, a first valve core 32, and a valve stem 33 installed inside the second mounting cavity 13. The drive component 4 includes a drive... The device comprises a drive seat 41 and a drive shaft 42. The drive seat 41 is connected to the second mounting cavity 13 and has a threaded hole 411. The lubrication structure 5 includes an oil injection hole 51 in the drive seat 41, which communicates with the interior of the threaded hole 411. The drive shaft 42 is inserted into and connected to the threaded hole 411. The bottom of the drive shaft 42 is connected to the top of the valve stem 33, and the first valve core 32 is connected to the bottom of the valve stem 33. The drive shaft 42 can drive the valve stem 33 and the first valve core 32 on it to move away from or towards the first valve seat 31, thereby opening and closing the second mounting cavity 13 and the air outlet 14. In this application, the drive shaft 42 has an axial mounting hole. The valve stem 33 passes through the mounting hole and is fixed to the top of the drive shaft 42 by a washer and nut. The drive shaft 42 and the threaded hole 411 are threadedly engaged. By rotating the threaded engagement between the drive shaft 42 and the drive seat 41, replacement and subsequent maintenance are facilitated. Furthermore, the drive component 4 needs to overcome a huge pressure differential to drive the valve stem 33 and the first valve core 32 to move, resulting in a large operating torque. The oil injection hole 51 on the drive seat 41 connects to the interior of the threaded hole 411. The oil injection hole 51 can reduce the friction between the drive seat 41 and the drive shaft 42, reduce the operating torque, reduce wear, increase the product's service life, and solve the problem of easy wear on the valve stem 33 and valve body 1 when the shut-off unit 3 opens and closes in high-pressure systems. In the prior art, the threaded connection of the valve stem 33 is extremely prone to wear. In addition, the drive seat 41 also has an oil outlet hole (not shown in the figure). The oil outlet end of the oil outlet hole can be connected to a recovery device or a filter device. The filter device can deliver the filtered lubricating oil to the oil injection hole 51, improving the utilization efficiency of the lubricating oil.

[0053] In a preferred embodiment of this utility model, such as Figure 1-3 The cutoff unit 3 shown also includes a valve sleeve 34 and a valve cover 35. The valve sleeve 34 is inserted into the interior of the second mounting cavity 13, with its bottom fitted around the outer periphery of the first valve seat 31. The valve stem and the first valve core 32 are fitted around the inner periphery of the valve sleeve 34 and move up and down along the axis of the valve sleeve 34. The valve sleeve 34 guides the up and down movement of the first valve core 32. The valve cover 35 is sealed to the top inner periphery of the valve sleeve 34. The drive component 4 is mounted on the top of the valve sleeve 34 and the valve cover 35. The top of the valve stem 33 passes through the valve cover 35 and is connected to the drive shaft 42. Figure 1-2As shown, the top outer periphery of the valve sleeve 34 is sealed to the valve body 1, and the valve cover 35 is sealed between the valve sleeve 34 and the valve stem 33 to confine the high-pressure air to the area below the valve sleeve 34, prevent high-pressure air from leaking from the drive component 4, and ensure the airtightness of the valve.

[0054] In a preferred embodiment of this utility model, such as Figure 1-3 The cutoff unit 3 shown also includes a sealing structure 36. The sealing structure 36 includes an annular protrusion 361 and a first sealing ring 362 located in the middle of the inner wall of the second mounting cavity 13. The annular protrusion 361 is fitted around the outer periphery of the valve sleeve 34. The first sealing ring 362 is connected to the annular protrusion 361 and the outer periphery of the valve sleeve 34. The annular protrusion 361, the first sealing ring 362, and the valve sleeve 34 together divide the second mounting cavity 13 into two independent first sub-cavities 131 and second sub-cavities 132. The cutoff unit 3 is connected to the second sub-cavity 132. The first valve seat 31 connects the air inlet 11 and the first sub-cavity 131 and the second mounting cavity 13. High-pressure air can enter the first mounting cavity 12 and the second mounting cavity 13 through the air inlet 11 and the second through hole 2121. The second sub-cavity 132 ensures the installation of the valve stem 33, the valve sleeve 34, the valve cover 35, and the cutoff unit 3.

[0055] In a preferred embodiment of this utility model, such as Figure 1-2 The inner wall of the valve sleeve 34 shown is provided with a first limiting protrusion 341 and a second limiting protrusion 342 from top to bottom. The bottom of the first limiting protrusion 341 abuts against the top of the first valve seat 31. The first valve core 32 can pass through the interior of the first limiting protrusion 341 and abut against the inner wall of the first valve seat 31 to disconnect the valve body 1. The valve sleeve 34 fixes the first valve seat 31 to the valve body 1 through the first limiting protrusion 341. The inner circumference of the second limiting protrusion 342 is always connected to the outer circumference of the first valve core 32 to guide the first valve core 32 so that the first valve core 32 always keeps moving up and down. The second sealing ring 343 connects the second limiting protrusion 342 and the first valve core 32 to divide the interior of the valve sleeve 34 into two independent first cavities 344 and second cavities 345. The first cavity 344 is located below the second cavity 345. The valve sleeve 34 has a first through hole 340 connecting the first cavity 344 and the first sub-cavity 131, so that high-pressure air enters the outlet 14 through the inlet 11, the first sub-cavity 131, and the first mounting cavity 12 and the first cavity 344. Figure 2As shown, the first cavity 344 and the second cavity 345 are independent of each other. The first cavity 344 is used to connect the first mounting cavity 12 and the air outlet 14 to realize the delivery of high-pressure air. In order to balance the pressure difference between the top and bottom of the first valve core 32, fluid can enter the second cavity 345 through the first balance hole 321 and multiple second balance holes 322 of the first valve core 32, which facilitates the opening and closing of the first valve core 32. The valve cover 35 is sealed between the valve sleeve 34 and the valve stem 33, which can seal the top of the second cavity 345 to prevent the high-pressure air in the second cavity 345 from entering the interior of the drive seat 41.

[0056] In a preferred embodiment of this utility model, such as Figure 1-3 The first valve core 32 shown has a first balancing hole 321 extending axially therein and a plurality of second balancing holes 322 located on the first balancing hole 321. The first balancing hole 321 extends upward from the bottom of the first valve core 32. The bottom of each second balancing hole 322 is connected to the first balancing hole 321, and the top extends outward and upward at an angle to the top of the first valve core 32 and communicates with the second cavity 345. (The last sentence appears to be incomplete and possibly refers to a different valve core.) Figure 1-3 The multiple second balance holes 322 shown are evenly distributed on the top of the first balance hole 321, and each second balance hole 322 forms a gas flow channel with the first balance hole 321, which can quickly disperse the airflow to the top of the first valve core 32. The inclined second balance holes 322 can effectively reduce the impact of the airflow on the first valve core 32, effectively balance the pressure difference between the bottom and the top, thereby significantly reducing the operating force required to open the valve.

[0057] In a preferred embodiment of this utility model, such as Figure 1 , 4 The one-way unit 2 shown in Figure -5 includes a second valve seat 21, a guide sleeve 22, a second valve core 23, and a spring 24. The second valve seat 21 includes a valve seat body 211 and a cylinder 212. The valve seat body 211 is connected to the inner wall of the first mounting cavity 12, inserted into it. The bottom of the cylinder 212 is connected to the top of the valve seat body 211. The guide sleeve 22 is fitted around the inner circumference of the cylinder 212. The second valve core 23 is fitted around the inner circumference of the guide sleeve 22. The spring 24 connects the guide sleeve 22 and the second valve core 23. The cylinder 212 has a second through hole 2121, which communicates with the first mounting cavity 12. The air inlet 11 communicates with the interior of the second mounting cavity 13 and the second valve seat 21, so that high-pressure air enters the first mounting cavity 12 through the air inlet 11 and the second through hole 2121. Figure 5The guide sleeve 22 is fixedly connected to the valve seat body 211. The second valve core 23 moves up and down inside the guide sleeve 22. The spring 24 is connected between the guide sleeve 22 and the second valve core 23. The second valve core 23 cooperates with the valve seat body 211 to control the opening and closing of the air inlet 11 and the second mounting cavity 13. When the air inlet 11 delivers high-pressure air, the high-pressure air pushes the second valve core 23 and the spring 24 upward, allowing the high-pressure air to enter the cylinder 212 and the first mounting cavity 12. When the air inlet 11 no longer delivers high-pressure air, the spring 24 drives the second valve core 23 downward and cooperates with the valve seat body 211 to close the valve, preventing high-pressure air backflow and ensuring unidirectional airflow. In addition, the guide sleeve 22 restricts the second valve core 23 to only move up and down, ensuring the sealing surface alignment accuracy and preventing instantaneous seal failure. A limiting groove can be provided on the side of the second valve core 23 near the valve seat body 211 to limit the spring 24, preventing the spring 24 from dislodging or deflecting, ensuring that the second valve core 23 can be reset in time and seal with the valve seat body 211 to block backflow. In a preferred embodiment of this utility model, such as Figure 1-5 The first valve core 32 shown includes a first sealing surface for mating with the first valve seat 31, and the second valve core 23 includes a second sealing surface for mating with the second valve seat 21. A hard alloy coating 6 is provided on the outer sides of both the first and second sealing surfaces. In the prior art, the compressed air inside the valve body 1 contains a large amount of oil and moisture, and often also contains particulate impurities such as rust and iron filings generated in the pipeline. When the first valve core 32 and the second valve core 23 are closed, they are easily squeezed and damaged by these particulate impurities, directly affecting the valve's sealing ability and causing frequent air leakage, directly impacting industrial production. This application improves the hardness of the first and second sealing surfaces by providing the hard alloy coating 6. Utilizing its high hardness, wear resistance, and corrosion resistance, it significantly reduces physical wear and chemical erosion of the sealing surfaces, greatly enhancing their resistance to damage, reducing valve replacement frequency, and simultaneously reducing media loss or energy waste due to leakage, thus extending the service life of the air filling valve.

[0058] In a preferred embodiment of this utility model, such as Figure 1 and 4The unidirectional unit 2 shown also includes a pressure cap 25 and an exhaust valve 26. The bottom of the pressure cap 25 abuts against the guide sleeve 22, and the top of the pressure cap 25 is connected to the valve body 1. The pressure cap 25 has a first through hole 251 along the axial direction, which communicates with the inner cavity of the guide sleeve 22. The exhaust valve 26 is connected to the side of the first through hole 251 away from the guide sleeve 22. The pressure cap 25 is pressed onto the top of the guide sleeve 22, and the outer periphery of the top of the guide sleeve 22 abuts against the top of the second valve seat 21. The second valve seat 21 can be axially positioned by the pressure cap 25 and the guide sleeve 22. In addition, the exhaust valve 26 is bolted to the pressure cap 25. The second valve seat 21 is connected to the first mounting cavity 12 and the air inlet 11 through a second through hole 2121 on it. The main body of the guide sleeve 22 is inserted into the interior of the second valve seat 21. The first through hole 251 communicates with the inner cavity of the second valve seat 21. The exhaust valve 26 can be adjusted in real time according to different settings to ensure that the equipment works normally within the pressure range and improve the service life of the equipment.

[0059] In a preferred embodiment of this utility model, such as Figure 1 and 4 The guide sleeve 22 shown is T-shaped and includes a vertical portion 221 and a horizontal portion 222. The vertical portion 221 is inserted into the cylinder 212, and the horizontal portion 222 is connected to the top of the vertical portion 221 and the cylinder 212. A guide hole 2211 is formed on the inner circumference of the vertical portion 221. The second valve core 23 is inserted into the guide hole 2211 and moves up and down along its axis. Figure 1 and 4 As shown, the spring 24 is sleeved on the outer periphery of the vertical part, and its two ends are respectively connected between the second valve core 23 and the horizontal part 222. The vertical part 221 can guide the movement of the spring 24 and the second valve core 23 at the same time, so that the contact area between the second valve core 23 and the guide hole 2211 is larger, which can better disperse the impact force of the high-pressure airflow, avoid the additional friction caused by lateral swing or rotation, make the opening and closing action of the second valve core 23 smoother, open or close in time, and prevent airflow backflow or delayed action.

[0060] Furthermore, the horizontal portion 222 has a second through hole 2221 and multiple inclined holes 2222. The second through hole 2221 connects to the guide hole 2211, and each inclined hole 2222 connects to the interior of the second through hole 2221 and the second valve seat 21. The air inlet of the exhaust valve 26 connects to the interior of the second valve seat 21 and the first mounting cavity 12 through the first through hole 251 and the second through hole 2221. Figure 1 and 4The second valve seat 21 shown is connected to the first mounting cavity 12 through the second through hole 2121. The bottom end of the inclined hole 2222 is connected to the interior of the second valve seat 21, and the top end of the inclined hole 2222 is connected to the first through hole 251 and the second through hole 2221. In this way, when the air pressure is too high, the exhaust valve 26 can release part of the pressure, ensuring that the equipment works normally within the pressure range and improving the service life of the equipment.

[0061] In a preferred embodiment of this utility model, such as Figure 1 The newly designed inflation valve also includes a pressure measuring component 7 for measuring the pressure of the valve body 1. Specifically, a gas measuring channel needs to be set in the valve body 1, which is connected to the first mounting cavity 12. The pressure measuring component 7 can measure parameters such as the pressure and flow rate of the gas in the gas measuring channel to ensure that the inflation process reaches the preset value, avoid accidents caused by excessive or insufficient pressure, and facilitate the maintenance and management of the system.

[0062] In this embodiment of the invention, the term "multiple" refers to two or more, unless otherwise explicitly defined. The terms "install," "connect," and "fix" should be interpreted broadly; for example, "connect" can mean a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0063] In the description of the embodiments of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0064] In this specification, the terms "an embodiment," "a preferred embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new structure of an inflator valve, characterized by, include: The valve body (1) is provided with an air inlet (11), a first mounting cavity (12), a second mounting cavity (13) and an air outlet (14) in sequence along the airflow direction; A unidirectional unit (2) is installed in the first mounting cavity (12) to control the gas flow direction in the first mounting cavity (12); The shut-off unit (3) includes a first valve seat (31), a first valve core (32) and a valve stem (33) installed inside the second mounting cavity (13). The first valve core (32) is connected to the bottom of the valve stem (33). The valve stem (33) drives the first valve core (32) away from or closer to the first valve seat (31) to realize the opening and closing of the second mounting cavity (13) and the air outlet (14). The drive component (4), located above the stop unit (3), includes a drive seat (41) and a drive shaft (42). The drive seat (41) is connected to the second mounting cavity (13). The drive seat (41) has a threaded hole (411). The drive shaft (42) is inserted into and connected to the threaded hole (411). The bottom of the drive shaft (42) is connected to the top of the valve stem (33). The drive shaft (42) can drive the valve stem (33) to move up and down. The lubrication structure (5) includes an oil injection hole (51) opened in the drive seat (41), the oil injection hole (51) communicating with the interior of the threaded hole (411).

2. The new structure inflator valve according to claim 1, wherein The cutoff unit (3) further includes: The valve sleeve (34) is inserted into the interior of the second mounting cavity (13), and its bottom is fitted around the outer periphery of the first valve seat (31). The valve stem (33) and the first valve core (32) are fitted around the inner periphery of the valve sleeve (34) and move up and down along the axis of the valve sleeve (34). The valve cover (35) is sealed to the top inner periphery of the valve sleeve (34), the drive component (4) is mounted on the top of the valve sleeve (34) and the valve cover (35), and the top of the valve stem (33) passes through the valve cover (35) and is connected to the drive shaft (42).

3. The new structure inflator valve according to claim 2, wherein The cutoff unit (3) further includes: The sealing structure (36) includes an annular protrusion (361) and a first sealing ring (362) located in the middle of the inner wall of the second mounting cavity (13). The annular protrusion (361) is sleeved on the outer periphery of the valve sleeve (34). The first sealing ring (362) is connected to the annular protrusion (361) and the outer periphery of the valve sleeve (34). The annular protrusion (361), the first sealing ring (362) and the valve sleeve (34) together divide the second mounting cavity (13) into two independent first sub-cavities (131) and second sub-cavities (132). The shut-off unit (3) is connected to the second sub-cavity (132).

4. The novel inflation valve according to claim 3, characterized in that, The inner wall of the valve sleeve (34) is provided with the following from top to bottom: The first limiting protrusion (341) abuts against the top of the first valve seat (31) at its bottom. The first valve core (32) can pass through the interior of the first limiting protrusion (341) and abut against the inner wall of the first valve seat (31) to disconnect the valve body (1). The second limiting protrusion (342) is always connected to the outer periphery of the first valve core (32) to guide the first valve core (32); The second sealing ring (343) is connected between the second limiting protrusion (342) and the first valve core (32) to divide the interior of the valve sleeve (34) into two independent first cavities (344) and second cavities (345). The first cavity (344) is located below the second cavity (345). The valve sleeve (34) has a first through hole (340) connecting the first cavity (344) and the first sub-cavity (131) so that high-pressure air enters the outlet (14) through the air inlet (11), the first mounting cavity (12), the first sub-cavity (131) and the first cavity (344).

5. The new structure inflator valve according to claim 4, wherein The first valve core (32) has a first balance hole (321) extending along its axial direction and a plurality of second balance holes (322) located on the first balance hole (321). The first balance hole (321) extends upward from the bottom of the first valve core (32). The bottom of each second balance hole (322) is connected to the first balance hole (321), and the top extends outward and upward to the top of the first valve core (32) and communicates with the second cavity (345).

6. The new structure inflator valve according to claim 1, wherein The unidirectional unit (2) includes: The second valve seat (21) includes a valve seat body (211) and a cylinder (212). The valve seat body (211) is connected to the inner wall of the first mounting cavity (12) and the bottom of the cylinder (212) is connected to the top of the valve seat body (211). A guide sleeve (22) is fitted onto the inner circumference of the cylinder (212); The second valve core (23) is sleeved on the inner circumference of the guide sleeve (22); A spring (24) is connected between the guide sleeve (22) and the second valve core (23); The cylinder (212) is provided with a second through hole (2121), which is connected to the second mounting cavity (13). The air inlet (11) is connected to the interior of the first mounting cavity (12) and the second valve seat (21), so that high-pressure air enters the first mounting cavity (12) through the air inlet (11) and the second through hole (2121).

7. The new structure inflator valve according to claim 6, wherein The first valve core (32) includes a first sealing surface for cooperating with the first valve seat (31), and the second valve core (23) includes a second sealing surface for cooperating with the second valve seat (21). The outer sides of the first sealing surface and the second sealing surface are provided with a hard alloy coating (6).

8. The new structure inflator valve according to claim 7, wherein The unidirectional unit (2) also includes: A pressure cap (25) is provided, the bottom of which abuts against the guide sleeve (22), and the top of which is connected to the valve body (1). The pressure cap (25) is provided with a first through hole (251) along the axial direction, and the first through hole (251) is connected to the inner cavity of the second valve seat (21). An exhaust valve (26) is connected to the side of the first through hole (251) away from the guide sleeve (22).

9. The new structure inflator valve according to claim 8, wherein The guide sleeve (22) is T-shaped, and the guide sleeve (22) includes: The vertical part (221) is inserted into the cylinder (212), and a guide hole (2211) is formed on its inner circumference. The second valve core (23) is inserted into the guide hole (2211) and moves up and down along its axis. The horizontal part (222) is connected to the top of the vertical part (221) and the cylinder (212), and has a second through hole (2221) and a plurality of inclined holes (2222). The second through hole (2221) is connected to the guide hole (2211). Each inclined hole (2222) is connected to the interior of the second through hole (2221) and the second valve seat (21). The air inlet of the exhaust valve (26) is connected to the interior of the second valve seat (21) and the first mounting cavity (12) through the first through hole (251) and the second through hole (2221).

10. The new structure inflator valve according to claim 1, wherein It also includes a pressure measuring component (7) for measuring the pressure of the valve body (1).

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