Controllable one-way air stop valve

Abstract

The utility model provides a controllable one-way air stop valve, which belongs to the technical field of air stop valves and comprises an air valve shell, the air valve shell is hollow inside, an installation block is arranged inside the air valve shell, one side of the installation block is connected with a valve clack through a spring, and a sliding block limiter is arranged above the installation block. A set distance is arranged between the sliding block limiting device and the mounting block, and the bottom of the sliding block limiting device is slidably connected with a sliding block. According to the utility model, the one-way limitation of the one-way check valve can be relieved only by the internal and external air pressure difference generated when the air pump sucks air without relying on third-party power such as man-made power, machine power and the like, so that air backflow is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of air stop valves, and in particular relates to a controllable one-way air stop valve. Background Art

[0002] A gas stop valve is a valve whose opening and closing part is a circular valve disc and which relies on its own weight and gas pressure to produce movement to block the backflow of the medium.

[0003] The function of this type of valve is to allow gas to flow in one direction only and prevent it from flowing in the opposite direction. Usually this type of valve works automatically. When the gas flows in one direction, the valve disc opens under the action of pressure; when the fluid flows in the opposite direction, the gas pressure and the self-reclosing valve disc act on the valve seat, thus cutting off the flow.

[0004] Common one-way air check valves only allow gas to flow in one direction and prevent it from flowing in the opposite direction. If you want to remove the one-way restriction of the one-way air check valve and allow gas to flow back, the commonly used methods are: first, the air check valve is equipped with special components to directly open the valve flap by manual pressure, thereby causing gas to flow back; second, the machine controls the valve flap to forcefully open, thereby causing gas to flow back. Regardless of manual or machine operation, the above methods rely on the power of a third party to complete the removal of the one-way restriction of the one-way air check valve and achieve gas backflow. Utility Model Content

[0005] In response to the defects or shortcomings in the prior art, the utility model provides a controllable one-way air check valve that can remove the one-way restriction of the one-way air check valve and achieve gas reflux without relying on third-party forces such as humans or machines, but only relying on the internal and external air pressure difference generated when the air pump sucks air.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An embodiment of the utility model provides a controllable one-way air check valve, including an air valve housing, the interior of the air valve housing is hollow, a mounting block is arranged inside the air valve housing, one side of the mounting block is connected to a valve disc through a spring, a slider limiter is arranged above the mounting block, the slider limiter is spaced from the mounting block by a set distance, and a slider is slidably connected to the bottom of the slider limiter.

[0008] Furthermore, the interior of the gas valve housing includes a first channel and a second channel, and the mounting block is arranged between the first channel and the second channel.

[0009] Furthermore, the mounting block is U-shaped, the outer wall of the mounting block is arranged closely against the inner wall of the air valve housing, and a plurality of spring mounting holes are provided at the bottom of the mounting block.

[0010] Furthermore, one end of the spring is fixedly connected to the bottom of the spring mounting hole, and the other end is fixedly connected to the valve flap.

[0011] Furthermore, a sliding groove is provided on the bottom surface of the slider limiter, the sliding groove is T-shaped, and the slider is slidably connected to the slider limiter through the sliding groove.

[0012] Furthermore, a first air hole is opened on the top surface of the air valve housing, and the first air hole passes through the top wall of the air valve housing. There are two first air holes, and the two first air holes are symmetrically arranged directly above the mounting block.

[0013] Furthermore, a second air hole is opened on the top surface of the slider limiter, and two second air holes are provided. The two second air holes are arranged corresponding to the two first air holes, and the width of the second air holes is the same as the width of the first air holes. The second air holes extend to the slide groove and are connected to the slide groove.

[0014] Furthermore, a third air hole is opened on the upper surface of the slider, and two third air holes are provided, and the two third air holes are arranged corresponding to the two second air holes. A baffle is arranged on one side of the third air hole, and the baffle protrudes from the upper surface of the slider, and the sum of the width of the third air hole and the baffle is equal to the width of the second air hole.

[0015] Furthermore, a surface of the slider limiter, the slider and the mounting block facing the second channel is flush with each other and in contact with a side surface of the valve disc.

[0016] Furthermore, a ventilation groove is provided at one end of the top of the slide groove close to the second channel, and the bottom surface of the ventilation groove and one surface close to the second channel are opened.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model arranges a mounting block in the air valve housing, one end of the mounting block is connected to the valve disc through a spring, and a slider limiter is arranged above the mounting block, and the bottom of the slider limiter is slidably connected to the slider; when the air pump delivers air, the gas can push open the valve disc for normal circulation, and the valve disc can prevent the gas from flowing in one direction; when the air pump inhales air, the slider slides to form a gap due to the pressure difference between the inside and outside of the air valve housing, thereby realizing the reverse circulation of the gas. The utility model does not rely on third-party forces such as humans and machines, but only relies on the internal and external air pressure difference generated when the air pump inhales air, thereby releasing the one-way restriction of the one-way air check valve, thereby realizing gas reflux. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the one-way air check valve structure in the embodiment of the utility model;

[0020] Figure 2 This is a cross-sectional view of the internal structure of the air valve housing in the embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the slider limiter in the embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of a slider in an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the valve disc structure in the embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the gas flow direction when the air pump delivers gas in the embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the gas flow direction when the air pump is sucking air in the embodiment of the utility model;

[0026] Among them, 1. valve housing; 2. first channel; 3. second channel; 4. mounting block; 5. spring mounting hole; 6. spring; 7. valve disc; 8. first air hole; 9. slider limiter; 10. slide groove; 11. slider; 12. second air hole; 13. third air hole; 14. baffle; 15. sealing ring; 16. ventilation groove. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] A typical implementation of the present utility model is as follows Figure 1 and Figure 2 As shown, a controllable one-way air stop valve includes an air valve housing 1. The air valve housing 1 is a rectangular structure, which is hollow inside and has openings at both ends. The air valve housing 1 includes a first channel 2 and a second channel 3. The first channel 2 is connected to an air pump. Under normal circumstances, the gas flows from the first channel 2 to the second channel 3.

[0029] A mounting block 4 is arranged between the first channel 2 and the second channel 3. The mounting block 4 is U-shaped. The outer wall of the mounting block 4 is arranged close to the inner wall of the air valve housing 1. A plurality of spring mounting holes 5 are opened at the bottom of the mounting block 4. The plurality of spring mounting holes 5 are arranged in parallel. The axial direction of the spring mounting hole 5 is the same as the length direction of the air valve housing 1. The opening direction of the spring mounting hole 5 faces the second channel 3. A spring 6 is arranged in the spring mounting hole 5. One end of the spring 6 is fixedly connected to the bottom of the spring mounting hole 5, and the other end is fixedly connected to a valve flap 7.

[0030] A first air hole 8 is formed on the top surface of the air valve housing 1 . The first air hole 8 penetrates the top wall of the air valve housing 1 . There are two first air holes 8 , which are symmetrically arranged just above the mounting block 4 .

[0031] A slider limiter 9 is arranged above the mounting block 4, the top surface of the slider limiter 9 is in close contact with the inner wall of the valve housing 1, the side walls of the slider limiter 9 are in close contact with the side walls of the mounting block 4, and a set distance is set between the bottom surface of the slider limiter 9 and the mounting block 4, so that a gas flow channel is formed between the slider limiter 9 and the mounting block 4, and the gas in the first channel 2 flows to the second channel 3 through the gas flow channel.

[0032] like Figure 3 As shown, a slide groove 10 is provided on the bottom surface of the slider limiter 9, and the slide groove 10 is T-shaped. A slider 11 is slidably connected to the slide groove 10. A second air hole 12 is provided on the top surface of the slider limiter 9. There are two second air holes 12. The two second air holes 12 are arranged corresponding to the two first air holes 8, and the width of the second air holes 12 is the same as the width of the first air holes 8. The second air holes 12 extend to the slide groove 10 and are connected to the slide groove 10.

[0033] like Figure 4 As shown, a third air hole 13 is opened on the upper surface of the slider 11, and there are two third air holes 13. The two third air holes 13 are arranged corresponding to the two second air holes 12. A baffle 14 is arranged on one side of the third air hole 13, and the baffle 14 protrudes from the upper surface of the slider 11. The sum of the widths of the third air hole 13 and the baffle 14 is equal to the width of the second air hole 12. When the slider 11 is embedded in the slide groove 10 at the bottom of the slider limiter 9, one end of the baffle 14 is located in the second air hole 12. Since the baffle 14 protrudes from the upper surface of the slider 11, the baffle 14 can only move in the second air hole 12, so that the baffle 14 is used to limit the sliding of the slider 11.

[0034] Under normal circumstances, the slider stopper 9, the slider 11 and the mounting block 4 are flush with each other on the side facing the second channel 3, and are in contact with the side of the valve flap 7. The valve flap 7 can cover the gas flow channel between the slider stopper 9 and the mounting block 4. Figure 5 As shown, a sealing ring 15 is provided on the side of the valve flap 7 to increase air tightness.

[0035] A ventilation groove 16 is provided at one end of the top of the slide 10 close to the second channel 3, and the bottom surface of the ventilation groove 16 and one surface close to the second channel 3 are opened. The valve flap 7 does not block the ventilation groove 16. When the gas needs to flow from the second channel 3 to the first channel 2, the gas in the second channel 3 flows to the first channel 2 through the ventilation groove 16.

[0036] How it works

[0037] When in use, first connect the air pump to the first channel, such as Figure 6As shown, when the air pump delivers gas, the gas first passes through the first channel, then pushes the valve flap to move to the right, and the gas passes through the valve flap and enters the second channel. When the air pump stops running, the gas backflow pushes the valve flap to move to the left to close the gas flow channel between the first channel and the second channel, thereby preventing gas backflow;

[0038] like Figure 7 As shown, when the air pump inhales, the air pressure in the first channel is lower than the external air pressure. At this time, the external atmospheric pressure will push the slider to move to the left, and finally the baffle will interfere to stop its movement. At this time, due to the sliding of the slider, a gap will appear between the valve disc and the slider. The gas flows from the second channel through the ventilation groove, the gap between the valve disc and the slider, and the gas flow channel, and finally enters the first channel, thereby releasing the one-way restriction of the one-way air check valve.

[0039] When the air pump delivers air again, the airflow in the first channel pushes the slider to move to the right, and is finally stopped by the interference of the baffle plate, and the gap is closed, thus realizing a controllable one-way air stop valve.

[0040] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A controllable one-way air check valve, characterized in that: It includes an air valve shell, which is hollow inside. A mounting block is arranged inside the air valve shell. A valve disc is connected to one side of the mounting block through a spring. A slider limiter is arranged above the mounting block. The slider limiter is spaced from the mounting block by a set distance. A slider is slidably connected to the bottom of the slider limiter.

2. A controllable one-way air check valve as claimed in claim 1, characterized in that: The air valve housing comprises a first channel and a second channel inside, and the mounting block is arranged between the first channel and the second channel.

3. A controllable one-way air check valve as claimed in claim 1, characterized in that: The mounting block is U-shaped, the outer wall of the mounting block is arranged closely against the inner wall of the air valve housing, and a plurality of spring mounting holes are arranged at the bottom of the mounting block.

4. A controllable one-way air check valve as claimed in claim 3, characterized in that: One end of the spring is fixedly connected to the bottom of the spring installation hole, and the other end is fixedly connected to the valve flap.

5. A controllable one-way air check valve as claimed in claim 1, characterized in that: A sliding groove is provided on the bottom surface of the slider limiter, and the sliding groove is T-shaped. The slider is slidably connected to the slider limiter through the sliding groove.

6. A controllable one-way air check valve as claimed in claim 5, characterized in that: The top surface of the air valve housing is provided with a first air hole, which penetrates the top wall of the air valve housing. Two first air holes are provided, and the two first air holes are symmetrically arranged just above the mounting block.

7. A controllable one-way air check valve as claimed in claim 6, characterized in that: A second air hole is opened on the top surface of the slider limiter. There are two second air holes, which are arranged corresponding to the two first air holes. The width of the second air holes is the same as that of the first air holes. The second air holes extend to the slide groove and are connected to the slide groove.

8. A controllable one-way air check valve as claimed in claim 7, characterized in that: A third air hole is provided on the upper surface of the slider, and two third air holes are provided, and the two third air holes are arranged corresponding to the two second air holes. A baffle is provided on one side of the third air hole, and the baffle protrudes from the upper surface of the slider, and the sum of the width of the third air hole and the baffle is equal to the width of the second air hole.

9. A controllable one-way air check valve as claimed in claim 1, characterized in that: The slider limiter, the slider and the mounting block are flush with one side facing the second channel and are in contact with the side surface of the valve disc.

10. A controllable one-way air check valve as claimed in claim 5, characterized in that: A ventilation groove is provided at one end of the top of the slide groove close to the second channel, and the bottom surface of the ventilation groove and one surface close to the second channel are opened.

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