Stable labor-saving type deflation valve

Abstract

The utility model relates to the technical field of tire tools, and discloses a stable labor-saving type deflation valve which comprises a main connecting body, and a pressure regulating air outlet valve is arranged at one end of the main connecting body; an air inlet valve is fixedly arranged at the other end of the main connecting body and comprises a valve body, an elastic clamping ring is clamped to the end of the valve body, and a plurality of fan-shaped clamping parts which are circumferentially and uniformly distributed and incline inwards are formed on the elastic clamping ring; an annular groove is formed in the middle of the main connecting body, a lever type button is sleeved with the annular groove, the lever type button is rotationally connected to one end of the main shell through a connecting piece, an inflating valve inserting hole is formed in the other end of the main shell, a jacking ring protruding towards the fan-shaped clamping part is formed at the inner end of the inflating valve inserting hole, and the air inlet valve is inserted into the main shell in a sleeved mode; the main connecting body can rotate in the main shell. The inflating valve can be clamped in a multi-point mode through the elastic clamping ring, and the connection stability between the deflation valve and the inflating valve can be effectively improved; and the fan-shaped clamping part can be conveniently driven to deform in a labor-saving manner through the lever type button, so that the inflating valve can be effectively protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to tire tool technical field, especially a kind of stable labor-saving type deflation valve. BACKGROUND

[0002] Deflation valve is used for the deflation of tire, to accurately control tire pressure, ensure the smooth and effective operation of car, bicycle or other tire moving equipment. Application No. CN202420316202.6 discloses a quick assembly and disassembly adjustable pressure tire deflation valve, comprising a first housing, a second housing, a pressure adjusting assembly, a gas nozzle docking assembly and a gas nozzle connecting assembly; the first housing is threadedly connected to the second housing at the lower end, and a fourth sealing ring is connected between the lower end surface of the first housing and the upper end surface of the second housing; the first housing and the second housing are in communication; an axle is movably connected inside the first housing; a pressure relief port is formed in the sidewall of the first housing; the pressure adjusting assembly is connected to the upper end of the first housing; the gas nozzle docking assembly is connected inside the second housing; and the gas nozzle connecting assembly is connected to the outer sidewall of the second housing. The gas nozzle connecting assembly comprises a locking piece and a pressing piece; the locking piece is movably inserted into the second housing; the lower end of the pressing piece is movably inserted into the outer end of the locking piece; a torsion spring is connected to the outer wall of the second housing; one end of the torsion spring is connected to the inner sidewall of the pressing piece; and the inner end of the locking piece penetrates into the inner side of the second housing. A threaded groove is formed in one end of the locking piece inside the second housing. An insertion shaft is movably connected to the outer wall of the second housing; fixed plates are connected to the two sides of the pressing piece; and the fixed plates are connected to the two ends of the insertion shaft. A square through groove is formed in the outer end of the locking piece; the lower end of the pressing piece is inserted into the through groove; and the width of the through groove is greater than the rear end of the pressing piece, so that the lower end of the pressing piece can be flexibly swung in the through groove. The existing deflation valve has the following deficiencies: the locking piece is used to press the tire valve nozzle, so as to install the deflation valve on the valve nozzle; however, this single-point pressing method is unreliable and unstable; under the action of high-pressure gas in the tire, the deflation valve may fall off the valve nozzle, and the valve nozzle may be damaged; and the pressing piece is close to the bolt, so a large force is required to move the locking piece, increasing the operation difficulty. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a stable labor-saving type deflation valve, which can multi-point clamp the valve nozzle through the elastic clamping ring, effectively improve the connection stability between the deflation valve and the valve nozzle, and ensure the smooth deflation and pressure adjustment; the lever-type button can conveniently and labor-savingly drive the fan-shaped clamping part to deform, and the valve nozzle will not be damaged during insertion, so the valve nozzle can be effectively protected.

[0004] The above technical purpose of the utility model is achieved by the following technical scheme:

[0005] A stable labor-saving type deflation valve, comprising a main connecting body, wherein one end of the main connecting body is provided with a pressure regulating outlet valve;

[0006] An air intake valve is fixed at the other end of the main connector. The air intake valve includes a valve body, and an elastic retaining ring is snapped into the end of the valve body. Multiple circumferentially distributed, inwardly inclined fan-shaped snapping parts are formed on the elastic retaining ring.

[0007] The main connector has an annular groove formed in the middle, and a lever-type button is fitted inside the annular groove. The lever-type button is rotatably connected to one end of the main housing through a connector. The other end of the main housing has a valve stem insertion hole formed. The inner end of the valve stem insertion hole has a top pressure ring protruding towards the fan-shaped snap-fit ​​part. The intake valve is inserted into the main housing. The main connector can rotate inside the main housing.

[0008] When installing the valve onto the tire valve stem, press the lever-type button. The lever-type button drives the pressure ring and the elastic retaining ring closer together. When the pressure ring contacts the multiple sector-shaped locking parts, it drives the sector-shaped locking parts to deform, thereby increasing the diameter of the circle formed by the multiple sector-shaped locking parts, making it easier to insert the valve into the tire valve stem. Release the lever-type button, and the sector-shaped locking parts will automatically deform and return to their original position under the elasticity of the retaining ring. The sector-shaped locking parts abut against the outer wall of the valve stem. Because there are multiple sector-shaped locking parts, multi-point clamping can be formed, thereby improving the connection stability between the valve and the tire valve stem.

[0009] The present invention is further configured such that: the main connecting body is formed with a threaded hole, a valve hole and a vent hole, and a vent hole is formed on the side wall of the valve hole;

[0010] The pressure regulating valve includes a threaded adjusting sleeve screwed into the large end of a threaded hole. A valve stem is fitted inside the threaded adjusting sleeve. One end of the valve stem is formed with a support part that fits with the valve hole with a clearance. A sealing ring is provided at the end of the support part away from the valve stem. The sealing ring presses against the stepped surface of the valve hole. A compression spring is clamped between the support part and the threaded adjusting sleeve.

[0011] This structural design allows the position of the adjusting sleeve within the threaded hole to be changed by rotating it, thereby compressing or releasing the spring and adjusting the pressure on the sealing ring to regulate different venting pressures. The sealing ring at the end of the valve stem mates with the stepped surface of the valve hole. When the tire pressure exceeds the pressure of the spring on the sealing ring, the sealing ring is lifted, and gas is discharged from the valve hole and vent.

[0012] The present invention is further configured such that: the threaded adjusting sleeve is screwed with a locking part, and the locking part abuts against the main connecting body.

[0013] The locking mechanism securely locks the threaded adjusting sleeve to the main connecting body after the position is adjusted, preventing the threaded adjusting sleeve from loosening due to vibration or other external forces during use, thus ensuring a stable and reliable pressure value regulated by the pressure regulating valve.

[0014] The present invention is further configured such that: the end of the threaded adjusting sleeve extending out of the threaded hole is formed with a knob;

[0015] The end of the valve stem extending beyond the threaded adjusting sleeve is fixed with a pull-out part;

[0016] Vertical or mesh patterns are formed on the outer walls of the knob, pull-out, and locking parts.

[0017] The knob allows users to easily adjust the venting pressure by rotating the threaded adjusting sleeve. The pull-out part allows users to directly pull the valve stem, enabling quick changes in venting status under certain circumstances. The vertical or mesh design increases friction between the hand and these components, making operation easier, more accurate, and more comfortable.

[0018] The present invention is further configured such that: the threaded adjusting sleeve is formed with a marking plane, and the marking plane is provided with scale marks, numerical marks and pressure marks.

[0019] The scale markings, numerical markings, and pressure markings on the marking plane provide users with an intuitive reference for pressure adjustment. Users can accurately adjust the venting pressure according to these markings, further improving the accuracy and operability of pressure regulation.

[0020] The present invention is further configured such that: a conical hole is formed at the end where the valve hole connects with the vent hole; and a sealing ring abuts against the conical hole;

[0021] The support part has a conical part formed on it, and the large end of the conical part has a groove formed on it, and the sealing ring is fitted into the groove.

[0022] The maximum outer diameter of the sealing ring is smaller than the inner diameter of the valve hole, and the vent hole is located near the bottom surface of the valve hole.

[0023] The fit between the conical bore and the sealing ring ensures a better seal. As the valve stem moves, the position of the sealing ring within the conical bore precisely controls the gas flow area, resulting in more accurate pressure regulation. The groove on the conical section ensures the sealing ring's installation stability, preventing displacement during operation. The vent hole is positioned close to the bottom of the valve bore, facilitating smooth gas discharge.

[0024] The present invention is further configured as follows: the lever-type button includes a V-shaped plate and two rectangular legs formed on the inner end of the V-shaped plate, and one long side of the connector abuts against the bottom surface of one side of the annular groove; the connector is connected to the middle of the rectangular legs, and the outer end of the connector is inserted into the main housing. The connector can be a short pin or a screw; a flexible pressing element is fixed to the outer end of the V-shaped plate.

[0025] The V-shaped plate and connector form a lever structure. By pressing the flexible press, the user can rotate the main connector with a small amount of force using the lever principle, thereby controlling the opening and closing of the air intake valve and achieving effortless operation. The flexible press also improves the user's comfort when pressing.

[0026] The present invention is further configured such that: the intake valve also includes a valve core inserted into the valve body, the valve core having a valve core pressure plate and a second air hole formed thereon, and a third air hole formed thereon on the valve core pressure plate;

[0027] A valve connection sealing sleeve is provided outside the valve core pressure plate;

[0028] A second compression spring is clamped between the valve core and the main connecting body.

[0029] When the intake valve is connected to the valve stem, the valve core pressure plate can open the valve core, allowing gas to enter the bleed valve through the second and third air holes. The valve connection sealing sleeve ensures the sealing performance between the intake valve and the valve stem, preventing gas leakage. The second pressure spring acts as a buffer and reset mechanism, enabling the valve core to stably open the valve core during operation and automatically reset after the bleed operation is completed.

[0030] The present invention is further configured such that: the main connecting body is formed with a threaded sleeve, and the end of the threaded sleeve is formed with a chamfered portion;

[0031] The outer diameter of the valve body is equal to the outer diameter of the threaded sleeve. The valve body is formed with a threaded boss, which is screwed into the threaded sleeve.

[0032] An O-ring is fitted to the bottom of the threaded boss, and the chamfered part covers the outside of the O-ring;

[0033] The end of the threaded sleeve rests against the stepped surface of the valve body.

[0034] The threaded connection between the threaded sleeve and the threaded boss makes the connection between the air intake valve and the main connecting body more secure and reliable. The fit of the O-ring and the chamfer further enhances the sealing performance of the connection, preventing gas leakage from the connection gap and ensuring the overall sealing and stability of the vent valve.

[0035] The outstanding effect of this utility model is:

[0036] Compared with existing technologies, the valve stem can be clamped at multiple points by the elastic retaining ring, which can effectively improve the connection stability between the bleed valve and the valve stem and ensure the smooth operation of bleed pressure regulation.

[0037] The lever-type button allows for easy and effortless deformation of the sector-shaped locking part, preventing wear on the valve stem during insertion and effectively protecting it. Attached Figure Description

[0038] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0039] Figure 2 This is a cross-sectional view of the present invention;

[0040] Figure 3 This is a partial schematic diagram of the present invention;

[0041] Figure 4 for Figure 2 A sectional view of BB;

[0042] Figure 5 for Figure 2 A magnified view of a portion of C;

[0043] Figure 6 for Figure 2 A magnified view of a portion of D.

[0044] Reference numerals: 1. Main connector;

[0045] 101. Annular groove; 102. Threaded hole; 103. Valve hole; 104. Vent hole; 105. Air vent; 106. Tapered hole; 107. Threaded sleeve; 108. Chamfered part;

[0046] 2. Pressure regulating valve; 21. Threaded adjusting sleeve; 22. Valve stem; 23. Support part; 24. Sealing ring; 25. Compression spring; 26. Locking part; 27. Pull-out part;

[0047] 211. Knob; 212. Scale markings; 213. Numerical markings; 214. Pressure markings; 215. Marking plane;

[0048] 231. Conical part; 232. Slot;

[0049] 3. Intake valve; 31. Valve body; 32. Valve core; 33. Sealing sleeve; 34. Second compression spring; 35. O-ring; 36. Elastic retaining ring;

[0050] 321. Valve core pressure plate; 322. Second air port; 323. Third air port;

[0051] 361. Fan-shaped snap-fit ​​part;

[0052] 4. Lever-type button; 41. V-shaped plate; 42. Rectangular support leg; 43. Flexible pressing component;

[0053] 5. Connectors;

[0054] 6. Main housing; 601. Valve nozzle insertion hole; 602. Top pressure ring;

[0055] 90. Valve stem. Detailed Implementation

[0056] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0057] The following is for reference Figures 1 to 6 The embodiments of this utility model are described below:

[0058] A stable and labor-saving venting valve includes a main connecting body 1, and a pressure regulating venting valve 2 is provided at one end of the main connecting body 1.

[0059] The other end of the main connector 1 is fixed with an air intake valve 3. The air intake valve 3 includes a valve body 31. An elastic retaining ring 36 is snapped into the end of the valve body 31. Multiple circumferentially distributed, inwardly inclined fan-shaped snapping parts 361 are formed on the elastic retaining ring 36.

[0060] The main connecting body 1 has an annular groove 101 formed in the middle. A lever-type button 4 is sleeved in the annular groove 101. The lever-type button 4 is rotatably connected to one end of the main housing 6 through a connector 5. The other end of the main housing 6 has a valve stem insertion hole 601. The inner end of the valve stem insertion hole 601 has a top pressure ring 602 protruding towards the fan-shaped snap-fit ​​part 361. The intake valve 3 is inserted into the main housing 6. The main connecting body 1 can rotate within the main housing 6.

[0061] When installing the valve onto the tire valve stem, press the lever-type button. The lever-type button drives the pressure ring and the elastic retaining ring closer together. When the pressure ring contacts the multiple sector-shaped locking parts, it drives the sector-shaped locking parts to deform, thereby increasing the diameter of the circle formed by the multiple sector-shaped locking parts, making it easier to insert the valve into the tire valve stem. Release the lever-type button, and the sector-shaped locking parts will automatically deform and return to their original position under the elasticity of the retaining ring. The sector-shaped locking parts abut against the outer wall of the valve stem. Because there are multiple sector-shaped locking parts, multi-point clamping can be formed, thereby improving the connection stability between the valve and the tire valve stem.

[0062] Preferably, the main connector 1 is formed with a threaded hole 102, a valve hole 103 and a vent hole 104, and a vent hole 105 is formed on the side wall of the valve hole 103.

[0063] The pressure regulating valve 2 includes a threaded adjusting sleeve 21 screwed into the large end hole of the threaded hole 102. A valve stem 22 is sleeved inside the threaded adjusting sleeve 21. One end of the valve stem 22 is formed with a support part 23 that is clearance-fitted with the valve hole 103. A sealing ring 24 is provided at the end of the support part 23 away from the valve stem 22. The sealing ring 24 is pressed against the stepped surface of the valve hole 103. A compression spring 25 is clamped between the support part 23 and the threaded adjusting sleeve 21.

[0064] This structural design allows the position of the threaded adjusting sleeve 21 within the threaded hole 102 to be changed by rotating it, thereby compressing or releasing the compression spring 25 and adjusting the pressure on the sealing ring to regulate different venting pressures. The sealing ring 24 at the end of the valve stem 22 engages with the stepped surface of the valve hole 103. When the air pressure inside the tire exceeds the pressure of the compression spring on the sealing ring, the sealing ring is lifted, and gas is discharged from the valve hole and vent.

[0065] Preferably, the threaded adjusting sleeve 21 is screwed with a locking part 26, which abuts against the main connecting body 1.

[0066] The locking part 26 can securely lock the threaded adjusting sleeve 21 onto the main connecting body 1 after the position of the threaded adjusting sleeve 21 is adjusted, preventing the threaded adjusting sleeve 21 from loosening due to vibration or other external forces during use, thereby ensuring that the pressure value regulated by the pressure regulating valve 2 is stable and reliable.

[0067] Preferably, the end of the threaded adjusting sleeve 21 that extends out of the threaded hole 102 is formed with a knob portion 211;

[0068] A pull-out part 27 is fixed to the end of the valve stem 22 that extends out of the threaded adjusting sleeve 21;

[0069] Vertical or mesh patterns are formed on the outer walls of the knob part 211, the pull part 27 and the locking part 26.

[0070] The knob 211 allows users to easily adjust the venting pressure by rotating the threaded adjusting sleeve 21. The pull-out part 27 allows users to directly pull the valve stem 22, which can quickly change the venting state in certain situations. The vertical or mesh design increases the friction between the hand and these parts, making operation easier and more accurate and comfortable.

[0071] Preferably, the threaded adjusting sleeve 21 is formed with a marking plane 215, on which scale markings 212, numerical markings 213 and pressure markings 214 are provided.

[0072] The scale markings 212, numerical markings 213, and pressure markings 214 on the marking plane 215 provide users with an intuitive reference for pressure adjustment. Users can accurately adjust the venting pressure according to these markings, further improving the accuracy and operability of pressure adjustment.

[0073] Preferably, the end of the valve hole 103 that connects with the vent hole 104 is formed with a tapered hole 106; the sealing ring 24 abuts against the tapered hole 106;

[0074] A conical portion 231 is formed on the support portion 23, and a groove 232 is formed at the large end of the conical portion 231. The sealing ring 24 is fitted into the groove 232.

[0075] The maximum outer diameter of the sealing ring 24 is smaller than the inner diameter of the valve hole 103, and the vent hole 105 is located near the bottom surface of the valve hole 103.

[0076] The fit between the conical bore 106 and the sealing ring 24 ensures a better seal. As the valve stem 22 moves, the position of the sealing ring 24 within the conical bore 106 precisely controls the gas flow area, resulting in more accurate pressure regulation. The groove 232 on the conical portion 231 ensures the installation stability of the sealing ring 24, preventing displacement during operation. The vent 105 is positioned close to the bottom surface of the valve bore 103, facilitating smooth gas discharge.

[0077] Preferably, the lever-type button 4 includes a V-shaped plate 41 and two rectangular legs 42 formed on the inner end of the V-shaped plate 41. One long side of the connector 5 abuts against the bottom surface of one side of the annular groove 101. The connector 5 is connected to the middle of the rectangular legs 42, and the outer end of the connector 5 is inserted into the main housing 6. The connector 5 can be a short pin or a screw. A flexible pressing member 43 is fixed to the outer end of the V-shaped plate 41.

[0078] The V-shaped plate 41 and the connector 5 form a lever structure. By pressing the flexible pressing part 43, the user can rotate the main connecting body 1 with a small force using the lever principle, thereby controlling the opening and closing of the air intake valve 3, achieving the purpose of labor-saving operation. The flexible pressing part 43 can also improve the user's comfort when pressing.

[0079] Preferably, the intake valve 3 also includes a valve core 32 fitted inside the valve body 31. The valve core 32 has a valve core pressure plate 321 and a second air hole 322 formed thereon, and a third air hole 323 is formed on the valve core pressure plate 321.

[0080] A valve connection sealing sleeve 33 is provided outside the valve core pressure plate 321;

[0081] A second compression spring 34 is clamped between the valve core 32 and the main connecting body 1.

[0082] When the intake valve 3 is connected to the valve stem, the valve core pressing platform 321 can open the valve core, allowing gas to enter the bleed valve through the second air hole 322 and the third air hole 323. The valve connection sealing sleeve 33 ensures the sealing performance between the intake valve 3 and the valve stem, preventing gas leakage. The second pressure spring 34 acts as a buffer and reset mechanism, enabling the valve core 32 to stably open the valve core during operation and automatically reset after the bleed operation is completed.

[0083] Preferably, the main connector 1 is formed with a threaded sleeve 107, and the end of the threaded sleeve 107 is formed with a chamfered portion 108.

[0084] The outer diameter of the valve body 31 is equal to the outer diameter of the threaded sleeve 107. The valve body 31 is formed with a threaded boss 311, which is screwed into the threaded sleeve 107.

[0085] The bottom of the threaded boss 311 is fitted with an O-ring 35, and the chamfered part 108 covers the outside of the O-ring 35;

[0086] The end of the threaded sleeve 107 rests against the stepped surface of the valve body 31.

[0087] The threaded connection between the threaded sleeve 107 and the threaded boss 311 makes the connection between the air intake valve 3 and the main connecting body 1 more secure and reliable. The fit between the O-ring 35 and the chamfer 108 further enhances the sealing performance of the connection, preventing gas from leaking from the connection gap and ensuring the overall sealing and stability of the vent valve.

[0088] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A stable and labor-saving venting valve, characterized in that: Includes a main connector (1), and a pressure regulating valve (2) is provided at one end of the main connector (1); The other end of the main connector (1) is fixed with an air intake valve (3). The air intake valve (3) includes a valve body (31). An elastic retaining ring (36) is snapped into the end of the valve body (31). Multiple circumferentially distributed, inwardly inclined fan-shaped snapping parts (361) are formed on the elastic retaining ring (36). The main connector (1) has an annular groove (101) formed in the middle. A lever-type button (4) is sleeved in the annular groove (101). The lever-type button (4) is rotatably connected to one end of the main housing (6) through the connector (5). The other end of the main housing (6) has a valve stem insertion hole (601). The inner end of the valve stem insertion hole (601) has a top pressure ring (602) protruding towards the fan-shaped snap-fit ​​part (361). The intake valve (3) is inserted into the main housing (6). The main connector (1) can rotate inside the main housing (6).

2. The stable and labor-saving venting valve according to claim 1, characterized in that: The main connector (1) is formed with a threaded hole (102), a valve hole (103) and a vent hole (104), and a vent hole (105) is formed on the side wall of the valve hole (103). The pressure regulating valve (2) includes a threaded adjusting sleeve (21) screwed into the large end hole of the threaded hole (102). A valve stem (22) is sleeved inside the threaded adjusting sleeve (21). One end of the valve stem (22) is formed with a support part (23) that is clearance-fitted with the valve hole (103). A sealing ring (24) is provided at the end of the support part (23) away from the valve stem (22). The sealing ring (24) presses against the stepped surface of the valve hole (103). A compression spring (25) is clamped between the support part (23) and the threaded adjusting sleeve (21).

3. The stable and labor-saving venting valve according to claim 2, characterized in that: The threaded adjusting sleeve (21) is screwed with a locking part (26), which abuts against the main connecting body (1).

4. The stable and labor-saving venting valve according to claim 3, characterized in that: The end of the threaded adjusting sleeve (21) extending out of the threaded hole (102) is formed with a knob (211). The end of the valve stem (22) extending out of the threaded adjusting sleeve (21) is fixed with a pull-out part (27); Vertical or mesh patterns are formed on the outer walls of the knob (211), pull (27) and locking (26).

5. A stable and labor-saving venting valve according to claim 2, characterized in that: The threaded adjusting sleeve (21) is formed with a marking plane (215), and the marking plane (215) is provided with scale markings (212), numerical markings (213) and pressure markings (214).

6. The stable and labor-saving venting valve according to claim 2, characterized in that: The end of the valve hole (103) that connects with the vent hole (104) is formed with a tapered hole (106); the sealing ring (24) abuts against the tapered hole (106); A conical part (231) is formed on the support part (23), and a groove (232) is formed at the large end of the conical part (231). The sealing ring (24) is fitted into the groove (232). The maximum outer diameter of the sealing ring (24) is smaller than the inner diameter of the valve hole (103), and the vent hole (105) is located near the bottom surface of the valve hole (103).

7. A stable and labor-saving venting valve according to claim 1, characterized in that: The lever-type button (4) includes a V-shaped plate (41), two rectangular legs (42) formed on the inner end of the V-shaped plate (41), and one long side of the connector (5) abutting against the bottom surface of one side of the annular groove (101); the connector (5) is connected to the middle of the rectangular legs (42), and the outer end of the connector (5) is inserted into the main housing (6); a flexible pressing part (43) is fixed to the outer end of the V-shaped plate (41).

8. A stable and labor-saving venting valve according to claim 1, characterized in that: The intake valve (3) also includes a valve core (32) inserted into the valve body (31). The valve core (32) has a valve core pressure plate (321) and a second air hole (322). A third air hole (323) is formed on the valve core pressure plate (321). A valve connection sealing sleeve (33) is provided outside the valve core pressure plate (321); A second compression spring (34) is clamped between the valve core (32) and the main connecting body (1).

9. A stable and labor-saving venting valve according to claim 8, characterized in that: The main connector (1) is formed with a threaded sleeve (107), and the end of the threaded sleeve (107) is formed with a chamfer (108). The outer diameter of the valve body (31) and the outer diameter of the threaded sleeve (107) are set to be equal. The valve body (31) is formed with a threaded boss (311), which is screwed into the threaded sleeve (107). The bottom of the threaded boss (311) is fitted with an O-ring (35), and the chamfered part (108) covers the outside of the O-ring (35); The end of the threaded sleeve (107) rests against the stepped surface of the valve body (31).

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