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CN-224201180-U - Exhaust one-way valve

CN224201180UCN 224201180 UCN224201180 UCN 224201180UCN-224201180-U

Abstract

The utility model belongs to the technical field of automobile air suspensions, and particularly relates to an exhaust one-way valve. The novel air-conditioning device comprises a base, and is characterized by further comprising a spring and an annular valve plate which are arranged in an air exhaust cavity, wherein a guide post which is positioned in the air exhaust cavity and extends towards the direction close to the bottom wall of the base is arranged on the cover body, the length L1 of the guide post is smaller than or equal to the distance L2 between the inner wall of the cover body and the bottom wall of the base, a first flow vent hole is formed in the side wall of the base, a second flow vent hole is formed in the cover body, the first flow vent hole and the second flow vent hole are communicated with the air exhaust cavity, the second flow vent hole is provided with a plurality of second flow vent holes which are arranged along the circumferential direction of the guide post, the annular valve plate and the spring are movably sleeved on the guide post, the annular valve plate is positioned between the cover body and the spring, and when the annular valve plate is attached to the inner wall of the cover body, the annular valve plate seals the second flow vent hole. The volume of the exhaust check valve is reduced, and the check valve mounting chamber arranged on the valve block is reduced.

Inventors

  • TANG KANGLIN
  • LI XINYU
  • CHEN ZHAO
  • LI YIWEN
  • XU XIAOGUANG
  • CHEN DONG
  • LIU XIAOYA

Assignees

  • 四川宁江山川机械有限责任公司

Dates

Publication Date
20260505
Application Date
20250515

Claims (10)

  1. 1. The exhaust check valve is characterized by comprising a base (1), wherein the base (1) is of a barrel-shaped structure with one end open, a cover body (2) is arranged at the opening of the base (1), the base (1) and the cover body (2) are encircled to form an exhaust cavity (102), the exhaust check valve further comprises a spring (4) and an annular valve plate (3) which are arranged in the exhaust cavity (102), the cover body (2) is provided with a guide post (202) which is arranged in the exhaust cavity (102) and extends towards the direction close to the bottom wall of the base (1), the length L1 of the guide post (202) is smaller than or equal to the distance L2 from the inner wall of the cover body (2) to the bottom wall of the base (1), a first flow vent hole (101) is formed in the side wall of the base (1), a second flow vent hole (201) is formed in the cover body (2), the first flow vent hole (101) and the second flow vent hole (201) are communicated with the exhaust cavity (102), the second flow vent holes (201) are arranged in a plurality of, the second flow vent holes (202) are sleeved with the guide post (4) and the guide post (201) along the circumference of the guide post (201), the annular valve plate (3) is positioned between the cover body (2) and the spring (4), and when the annular valve plate (3) is attached to the inner wall of the cover body (2), the annular valve plate (3) seals the second flow vent hole (201).
  2. 2. The exhaust one-way valve according to claim 1, wherein the cover body (2) is provided with a groove (203) coaxially arranged with the guide post (202), and the opening direction of the groove (203) is the same as the opening direction of the base (1).
  3. 3. The exhaust one-way valve according to claim 1, wherein an annular seal ring (5) coaxially arranged with the cover body (2) is provided on the outer wall of the cover body, and the second flow vent (201) is located at the inner side of the annular seal ring (5).
  4. 4. A venting check valve as claimed in claim 3, characterized in that the annular sealing ring (5) is a rubber product.
  5. 5. The exhaust one-way valve according to claim 1, wherein the base (1), the cover (2), the annular valve plate (3) and the spring (4) are all hard metal products.
  6. 6. The exhaust one-way valve according to claim 1, wherein the cover (2) and the guide post (202) are of an integrally formed unitary structure.
  7. 7. The exhaust one-way valve according to claim 1, wherein the base (1) and the cover (2) are connected by a clamping structure.
  8. 8. The exhaust one-way valve according to claim 1, wherein the base (1) comprises an exhaust section (103) and a mounting section (104) which are sequentially arranged along the axial direction of the base, the mounting section (104) protrudes from the exhaust section (103) in a direction away from the axis of the base (1), the exhaust section (103) is adjacent to an opening of the base (1), the mounting section (104) is adjacent to a bottom wall of the base (1), and the first flow vent (101) is positioned in the exhaust section (103).
  9. 9. The exhaust one-way valve according to claim 8, characterized in that an annular chip collecting groove (105) coaxially arranged with the base (1) is arranged on the outer side wall of the base, and the annular chip collecting groove (105) is recessed in a direction approaching the axis of the base (1) and is positioned in the mounting section (104).
  10. 10. The exhaust one-way valve according to claim 1, characterized in that the guide post (202) is arranged coaxially with the seat (1).

Description

Exhaust one-way valve Technical Field The utility model belongs to the technical field of automobile air suspensions, and particularly relates to an exhaust one-way valve. Background The automobile air suspension comprises a valve block, an air spring, an air storage tank, a drying tank, a piston pump, an electromagnetic valve group and the like. The valve block is provided with an air inlet and an air outlet which are both communicated with the flow channel. The valve block is internally provided with a flow channel, and the air spring, the air storage tank, the drying tank, the piston pump and the electromagnetic valve group are all arranged on the valve block and are connected through the flow channel, and the electromagnetic valve group is used for controlling the on-off of the flow channel and the switching of the on-off of the flow channel. To ensure unidirectional flow of air entering the flow passage from the outlet of the piston pump to the inlet of the drying tank and unidirectional flow of air entering the flow passage from the outlet of the drying tank to the air storage tank. The valve block is generally provided with an exhaust check valve connected with the flow passage, wherein one exhaust check valve is positioned between the outlet of the piston pump and the inlet of the drying tank, and the other exhaust check valve is positioned between the outlet of the drying tank and the air storage tank. The existing exhaust check valve can be arranged on a valve block, for example, chinese patent document with the authority publication number of CN205244495U discloses an exhaust check valve, which comprises a valve body, a valve core, a spring, a sleeve nut and a rubber sleeve, wherein one end of the valve body is provided with an inlet section, an exhaust channel is arranged in the inlet section, the other end of the valve body is provided with external threads, the sleeve nut is in threaded connection with the valve body, a cavity is formed between the sleeve nut and the valve body, an exhaust hole is formed in the side wall of the cavity, the valve core is arranged in the cavity to seal or open the exhaust channel, the spring is arranged between the sleeve nut and the valve core, and the rubber sleeve is arranged at the exhaust hole. The valve core of the exhaust check valve is of a spherical structure, so that the volume of the exhaust check valve is larger, and a larger check valve mounting cavity is required to be arranged when the exhaust check valve is mounted on the valve block. Disclosure of utility model The technical problem to be solved by the utility model is to provide the exhaust one-way valve, so that the volume of the exhaust one-way valve is reduced, and the mounting cavity of the one-way valve arranged on the valve block is reduced. The technical scheme includes that the exhaust one-way valve comprises a base, a spring and an annular valve plate, wherein the base is of a barrel-shaped structure with one end open, a cover body is arranged at the opening of the base, the base and the cover body are encircled to form an exhaust cavity, the spring and the annular valve plate are arranged in the exhaust cavity, a guide post which is arranged in the exhaust cavity and extends towards the direction close to the bottom wall of the base is arranged on the cover body, the length L1 of the guide post is smaller than or equal to the distance L2 from the inner wall of the cover body to the bottom wall of the base, a first flow vent hole is formed in the side wall of the base, a second flow vent hole is formed in the cover body, the first flow vent hole and the second flow vent hole are both communicated with the exhaust cavity, the second flow vent hole is provided with a plurality of the second flow vent holes, the annular valve plate and the spring are both movably sleeved on the guide post, the annular valve plate is arranged between the cover body and the spring, and the annular valve plate seals the second flow vent hole when the annular valve plate is attached to the inner wall of the cover body. Further, the cover body is provided with a groove coaxially arranged with the guide post, and the opening direction of the groove is the same as the opening direction of the base. Further, an annular sealing ring which is coaxially arranged with the cover body is arranged on the outer wall of the cover body, and the second flow vent hole is positioned at the inner side of the annular sealing ring. Further, the annular sealing ring is a rubber product. Furthermore, the base, the cover body, the annular valve plate and the spring are all hard metal products. Further, the cover body and the guide post are of an integrally formed integral structure. Further, the base is connected with the cover body through a clamping structure. Further, the base comprises an exhaust section and a mounting section which are sequentially arranged along the axial direction of the base, the mounting section protrudes