A one-way throttle valve protection device for an air pump and an air pump

Abstract

This utility model relates to a one-way throttle valve protection device for an air pump and an air pump. It solves the technical problem of unreasonable design of existing air pump throttle valves. The one-way throttle valve protection device for the air pump includes: a valve housing, including an airflow channel disposed in the valve housing, and inlet and outlet ports disposed at both ends of the valve housing and communicating with the airflow channel; an adjusting housing connected to the valve housing, having an adjusting guide channel in the adjusting housing, a valve core axially disposed in the adjusting guide channel and threadedly connected to the adjusting housing, one end of the valve core extending into the airflow channel and capable of blocking the airflow channel, and the other end of the valve core away from the airflow channel extending out of the adjusting housing and connected to an adjusting knob, and a limiting stop block on the outside of the adjusting housing to limit the axial adjustment range of the adjusting knob. This one-way throttle valve protection device for the air pump provides damage protection and improves service life.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic pump valves, and relates to a one-way throttle valve protection device for an air pump and an air pump. Background Technology

[0002] For example, Chinese patent literature discloses a pneumatic throttle valve [201820812580.8], which includes a valve body, a valve sleeve, an adjusting rod, and a valve core. The valve sleeve is fitted onto the outer wall of the valve body. The valve body has an air inlet, and the valve sleeve has an exhaust port. The valve sleeve has a connecting channel connecting the air inlet and the exhaust port. The valve body has a valve core located at the air inlet. The valve core has an air inlet hole at its center. The bottom of the adjusting rod is conical, and the bottom of the adjusting rod passes through the valve sleeve and extends into the air inlet hole. The valve sleeve is fitted with an adjusting cap, which extends into the valve sleeve and connects to the top of the adjusting rod. The inner wall of the adjusting cap has limiting teeth, and the outer periphery of the valve sleeve has a limiting groove that cooperates with the limiting teeth.

[0003] The drawbacks of the above technical solution are: the lack of protection to limit the adjustment range of the adjustment rod, the reduced sealing and adjustment accuracy of the adjustment rod, and the reduced service life after long-term use. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a one-way throttle valve protection device for an air pump and an air pump.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] The air pump one-way throttle valve protection device includes:

[0007] The valve housing includes an airflow passage disposed in the valve housing, and an inlet and outlet disposed at both ends of the valve housing and communicating with the airflow passage;

[0008] An adjusting housing is connected to the valve housing. An adjusting guide channel is provided in the adjusting housing. A valve core is axially arranged in the adjusting guide channel and threadedly connected to the adjusting housing. One end of the valve core extends into the airflow channel and can block the airflow channel. The other end of the valve core away from the airflow channel protrudes from the adjusting housing and is connected to an adjusting knob. A limiting block is provided on the outside of the adjusting housing to limit the axial adjustment range of the adjusting knob.

[0009] Furthermore, the limiting block is provided with an elastic element that abuts against the end of the adjusting knob.

[0010] Furthermore, the limiting block has a clearance surface, and the circumferential edge of the adjusting knob protrudes beyond the circumferential edge of the limiting block.

[0011] Furthermore, the airflow channel has an L-shaped cross-section, and the valve core is inserted at the corner end of the airflow channel.

[0012] Furthermore, a valve skeleton is embedded in the airflow channel, and the valve skeleton has a connecting hole in the middle that mates with the valve core.

[0013] Furthermore, a one-way membrane is sleeved on the outer side of the valve skeleton, and the one-way membrane elastically adheres to the inner wall of the airflow channel and can seal the gap between the outer wall of the valve skeleton and the inner wall of the airflow channel.

[0014] Furthermore, the valve core is fitted with at least one sealing gasket on its circumferential outer wall in the regulating guide channel.

[0015] Furthermore, the valve core has a tapered head at one end that extends into the airflow channel.

[0016] Furthermore, the adjustment knob is sleeved on one end of the valve core that protrudes from the adjustment housing and is fixed by a locating pin.

[0017] This utility model also provides an air pump with the air pump one-way throttle valve protection device as described above.

[0018] Compared with existing technologies, this air pump one-way throttle valve protection device limits the movement distance of the adjustment knob by a limit stop block, preventing the valve core from being driven outward or detached due to high pressure damage, thus providing damage protection. In addition, the elastic element abuts against the adjustment knob to prevent the valve core from rotating and loosening under air pressure, thereby improving its service life. Attached Figure Description

[0019] Figure 1 A schematic diagram of a one-way throttle valve protection device for an air pump provided by this utility model.

[0020] Figure 2 for Figure 1 A schematic diagram of the valve core structure of the one-way throttle valve protection device for the air pump.

[0021] Figure 3 for Figure 1 A schematic diagram of the clearance section of the air pump one-way throttle valve protection device.

[0022] In the diagram, 10 is the valve housing; 11 is the airflow passage; 12 is the air inlet and outlet; 20 is the regulating housing; 21 is the regulating guide passage; 22 is the valve core; 23 is the regulating knob; 24 is the limit stop; 25 is the elastic element; 26 is the clearance section; 27 is the sealing gasket; 28 is the conical head; 29 is the locating pin; 30 is the valve skeleton; 31 is the connecting hole; and 32 is the one-way diaphragm. Detailed Implementation

[0023] Example 1, please refer to Figures 1 to 3 This invention provides a one-way throttle valve protection device for an air pump and a schematic diagram of the air pump. The one-way throttle valve protection device includes: a valve housing 10, an adjusting housing 20 connected to the valve housing 10, an airflow channel 11 disposed in the valve housing 10, and a valve core 22 disposed in the adjusting housing 20, etc. It is conceivable that this one-way throttle valve protection device for an air pump also includes other functional components and specific structures, such as connecting pipes, sealing components, and mounting structures, etc., which are all technologies known to those skilled in the art, and therefore will not be described in detail here.

[0024] In this embodiment, the valve housing 10 is L-shaped, and an airflow channel 11 with an L-shaped cross-section is also provided inside the valve housing 10. The L-shaped design of the airflow channel 11 reduces space occupation. At both ends of the valve housing 10, there are air inlets and outlets 12 that connect to the airflow channel 11. The air inlets and outlets 12 are air inlets and air outlets, and their specific functions are set according to the actual external pipe.

[0025] In this embodiment, a valve frame 30 is snapped into the airflow channel 11. The valve frame 30 has a connecting hole 31 in the middle that mates with the valve core 22. The connecting hole 31 is the main airflow channel, which is controlled to open and close by the valve core 22. A gap is provided between the outer wall of the valve frame 30 and the inner wall of the airflow channel 11 as a secondary channel. A one-way membrane 32 is sleeved around the outer side of the valve frame 30. The one-way membrane 32 elastically fits the inner wall of the airflow channel 11 and can seal the gap between the outer wall of the valve frame 30 and the inner wall of the airflow channel 11. The valve frame 30 and the one-way membrane 32 are existing technologies, which can achieve one-way airflow through the design of the one-way membrane 32 when the connecting hole 31 is closed.

[0026] In this embodiment, the regulating housing 20 is connected to the valve housing 10. Specifically, an interface is provided at the corner end of the valve housing 10, and the regulating housing 20 is connected to this interface by a flange connection or a threaded connection. The regulating housing 20 is provided with a regulating guide channel 21 that communicates with the airflow channel 11. A valve core 22, which is threadedly connected to the regulating housing 20, is axially arranged in the regulating guide channel 21. The valve core 22 includes a piston section that fits against the regulating guide channel 21, a plug section that extends into the airflow channel 11 and can block the airflow channel 11, and an regulating rod that extends out of the regulating housing 20. The plug section of the valve core 22 is inserted through the corner end of the airflow channel 11. The end of the valve core 22 that extends into the airflow channel 11 is provided with a conical head 28. The structure of the conical head 28 makes it easier for the head of the valve core 22 to block the airflow channel 11. A soft contact point can also be provided at the position of the conical head 28 to increase the sealing performance.

[0027] At least one sealing gasket 27 is fitted onto the circumferential outer wall of the piston section of the valve core 22 located in the regulating guide channel 21. The sealing gasket 27 ensures the sealing performance in the regulating guide channel 21 and ensures that the movement of the valve core 22 will not affect the sealing performance of the throttle valve. In addition, the outer wall of the valve core 22 is provided with external threads, and a matching internal thread is provided in the regulating guide channel 21, or a fixing nut structure connected to the valve core 22 is provided in the regulating housing 20. This allows the valve core 22 to move axially in the regulating guide channel 21 by rotating it, ultimately achieving the purpose of controlling the opening and closing of the airflow channel 11.

[0028] In this embodiment, an adjustment knob 23 is connected to the adjustment rod position of the valve core 22. The adjustment knob 23 serves as the external drive end of the valve core 22, making it easy to hold and adjust by hand. The adjustment knob 23 is sleeved on the end of the valve core 22 that protrudes from the adjustment housing 20 and is fixed by the positioning pin 29. This connection method allows the adjustment knob 23 to be installed and removed in a small space.

[0029] The outer side of the regulating housing 20 is provided with a limiting block 24 to restrict the axial adjustment range of the regulating knob 23. The limiting block 24 reduces accidental contact of the regulating knob 23 with external impacts. At the same time, the limiting block 24 restricts the movement distance of the regulating knob 23, preventing the valve core 22 from being driven outwards or detached due to high pressure, thus providing damage protection. An elastic element 25 is provided on the limiting block 24, abutting against the end of the regulating knob 23. The elastic element 25 is either a buffer elastic pad covering the limiting block 24 or a spring embedded in the limiting block 24. The elastic element 25 abuts against the regulating knob 23, preventing the valve core 22 from rotating and loosening under air pressure, thereby improving its service life.

[0030] Ideally, the limiting block 24 is provided with a clearance surface 26, and the circumferential edge of the adjusting knob 23 protrudes beyond the circumferential edge of the limiting block 24, so that the edge of the adjusting knob 23 is exposed, making it easy to pinch and rotate for adjustment.

[0031] Example 2: This utility model also provides an air pump with the air pump one-way throttle valve protection device as described above. Except for the air pump one-way throttle valve protection device, the other components are all prior art or commercially available parts.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An air pump one-way throttle valve protection device, characterized by, include: The valve housing (10) includes an airflow passage (11) disposed in the valve housing (10) and an inlet / outlet (12) disposed at both ends of the valve housing (10) and connected to the airflow passage (11). An adjusting housing (20) is connected to the valve housing (10). An adjusting guide channel (21) is provided in the adjusting housing (20). A valve core (22) is axially arranged in the adjusting guide channel (21) and threadedly connected to the adjusting housing (20). One end of the valve core (22) extends into the airflow channel (11) and can block the airflow channel (11). The end of the valve core (22) away from the airflow channel (11) extends out of the adjusting housing (20) and is connected to an adjusting knob (23). A limiting block (24) is provided on the outside of the adjusting housing (20) to limit the axial adjustment range of the adjusting knob (23).

2. The air pump one-way throttle valve protection device according to claim 1, characterized in that, The limiting block (24) is provided with an elastic element (25) that abuts against the end of the adjusting knob (23).

3. The air pump one-way throttle valve protection device according to claim 2, characterized in that, The limiting block (24) has a clearance surface (26), and the circumferential edge of the adjusting knob (23) protrudes beyond the circumferential edge of the limiting block (24).

4. The air pump one-way throttle valve protection device according to claim 1, characterized in that, The airflow channel (11) has an L-shaped cross-section, and the valve core (22) is inserted at the corner end of the airflow channel (11).

5. The air pump one-way throttle valve protection device according to claim 1, characterized in that, A valve frame (30) is embedded in the airflow channel (11), and the valve frame (30) has a connecting hole (31) in the middle that mates with the valve core (22).

6. The air pump one-way throttle valve protection device according to claim 5, characterized in that, The valve frame (30) is fitted with a one-way membrane (32) around its outer side. The one-way membrane (32) is elastically attached to the inner wall of the airflow channel (11) and can seal the gap between the outer wall of the valve frame (30) and the inner wall of the airflow channel (11).

7. The air pump one-way throttle valve protection device according to claim 1, characterized in that, The valve core (22) is located in the regulating guide channel (21) and at least one sealing gasket (27) is fitted on its circumferential outer wall.

8. The air pump one-way throttle valve protection device according to claim 5, characterized in that, The valve core (22) has a tapered head (28) at one end that extends into the airflow channel (11).

9. The air pump one-way throttle valve protection device according to claim 1, characterized in that, The adjustment knob (23) is sleeved on one end of the valve core (22) that protrudes from the adjustment housing (20) and is fixed by a positioning pin (29).

10. An air pump, characterized in that, A one-way throttle valve protection device for an air pump as described in any one of claims 1-7.

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