Breather valve with long service life

Abstract

The utility model discloses a breather valve with long service life, which relates to the technical field of breather valves, and comprises a breather valve body, a valve cover is fixedly mounted on one side of the breather valve body, a filter screen is fixedly mounted in the valve cover, a transmission case is fixedly mounted in the valve cover, and the transmission case is fixedly mounted on the other side of the breather valve body. A winding shaft is rotatably connected to the interior of the transmission box, a pull rope is wound on the surface of the winding shaft, a sliding way is formed in the inner wall of the valve cover, a moving block is slidably connected to the interior of the sliding way, a limiting guide rod is fixedly installed in the sliding way, and the surface of the limiting guide rod is slidably connected with the interior of the moving block. And the interiors of the valve cover and the breather valve body are conveniently protected, so that external mosquitoes or dust are prevented from entering the interiors of the valve cover and the breather valve body, the protection effect of the breather valve body is achieved, and the service life of the breather valve body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing valves, in particular to a breathing valve with a long service life. Background Art

[0002] A breathing valve is a valve that not only ensures that the storage tank space is isolated from the atmosphere within a certain pressure range, but can also communicate with the atmosphere (breathe) when the pressure exceeds or falls below this pressure range. Its function is to prevent the storage tank from being damaged due to overpressure or vacuum, and at the same time reduce the evaporation loss of the stored liquid. Setting a breathing valve can not only reduce the gas emission in the tank, thereby reducing the pollution to the atmosphere, but also prevent the storage tank from being damaged due to overpressure or instability due to ultra-vacuum, which plays a certain role in promoting safety and environmental protection. The breathing valve is mainly composed of a valve seat, a valve cover, a protective cover and two sets of opening and closing devices controlled by vacuum and pressure. The opening and closing device includes a valve disc, a guide rod, a spring, a spring seat and a sealing ring. When the pressure in the tank reaches the rated exhalation positive pressure, the pressure valve disc opens and the steam in the tank is discharged; when the vacuum in the tank reaches the rated inhalation negative pressure, the vacuum valve disc opens and air enters.

[0003] When exhausting, a breathing valve is needed. However, some existing breathing valves are usually discharged directly when in use. However, since the valve cover is in an open state, it is easy for external impurities or mosquitoes to enter the valve body through the valve cover, thereby causing damage to the internal parts of the valve body and reducing the service life.

[0004] In view of the above problems, a breathing valve with a long service life is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a breathing valve with a long service life, which can solve the problems of the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a breathing valve with a long service life, comprising a breathing valve body, a valve cover fixedly installed on one side of the breathing valve body, a filter screen fixedly installed inside the valve cover, a transmission box fixedly installed inside the valve cover, a winding shaft rotatably connected inside the transmission box, a pull rope wound on the surface of the winding shaft, a slideway is opened on the inner wall of the valve cover, a moving block is slidably connected inside the slideway, a limiting guide rod is fixedly installed inside the slideway, and the surface of the limiting guide rod is slidably connected to the inside of the moving block.

[0007] Preferably, an elastic spring is movably sleeved on the surface of the limiting guide rod, one end of the elastic spring close to the moving block is fixedly connected to the moving block, and one end of the elastic spring away from the moving block is fixedly connected to the inner wall of the slideway.

[0008] Preferably, a cleaning brush is fixedly mounted on the moving block, one end of the pull rope is fixedly connected to the cleaning brush, and the cleaning brush contacts the bottom of the filter screen.

[0009] Preferably, the transmission box is rotatably connected to a rotation support shaft inside, and a blade is fixedly mounted on one end of the rotation support shaft extending to the outside of the transmission box.

[0010] Preferably, the rotating support shaft and the winding shaft are both fixedly sleeved with sprockets on the surface of one end inside the transmission box, and chains are drivingly connected to the two sprockets.

[0011] Preferably, the valve cover is internally rotatably connected with a fixed rotating shaft, a sealing plate is fixedly sleeved on the fixed rotating shaft, and the sealing plate is parallel to the filter screen and is located at the bottom of the filter screen.

[0012] Preferably, a torsion spring is movably sleeved on one end of the fixed rotating shaft, one end of the torsion spring close to the sealing plate is fixedly connected to the sealing plate, and one end of the torsion spring away from the sealing plate is fixedly connected to the inner wall of the valve cover.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The breathing valve with a long service life can protect the valve cover and the interior of the breathing valve body by setting a filter net, thereby preventing external mosquitoes or dust from entering the valve cover and the interior of the breathing valve body. The protective effect of the breathing valve body prolongs the service life of the breathing valve body.

[0015] (2) With the breathing valve having a long service life, when gas enters the interior of the valve cover, it blows the sealing plate, thereby causing the sealing plate to flip around the fixed rotating axis, thereby causing the torsion spring to deform. When the sealing plate is no longer blown, the sealing plate is reset by the torsion spring, thereby achieving sealing of the valve cover and further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0017] Figure 1 This is a structural schematic diagram of a breathing valve with a long service life according to the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the valve cover of the utility model;

[0019] Figure 3 It is a schematic diagram of the filter screen of the utility model;

[0020] Figure 4 For this utility model Figure 3 The enlarged schematic diagram at A in the middle;

[0021] Figure 5 It is the internal schematic diagram of the transmission box of the utility model.

[0022] Figure numerals: 1. breathing valve body; 2. valve cover; 3. transmission box; 4. blades; 5. rotating support shaft; 6. filter screen; 7. winding shaft; 8. sealing plate; 9. torsion spring; 10. fixed rotating shaft; 11. cleaning brush; 12. pull rope; 13. slideway; 14. elastic spring; 15. limiting guide rod; 16. moving block; 17. sprocket; 18. chain. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0025] See also Figure 1-5 The utility model provides a technical solution: a breathing valve with a long service life, comprising a breathing valve body 1, a valve cover 2 is fixedly installed on one side of the breathing valve body 1, and a filter screen 6 is fixedly installed inside the valve cover 2.

[0026] By setting the filter net 6, it is convenient to protect the interior of the valve cover 2 and the breathing valve body 1, thereby preventing external mosquitoes or dust from entering the valve cover 2 and the breathing valve body 1. The protective effect of the breathing valve body 1 extends the service life of the breathing valve body 1.

[0027] A transmission box 3 is fixedly installed inside the valve cover 2, and a winding shaft 7 is rotatably connected inside the transmission box 3. A pull rope 12 is wound on the surface of the winding shaft 7. A slide 13 is opened on the inner wall of the valve cover 2, and a moving block 16 is slidably connected inside the slide 13. A limiting guide rod 15 is fixedly installed inside the slide 13, and the surface of the limiting guide rod 15 is slidably connected to the inside of the moving block 16. An elastic spring 14 is movably sleeved on the surface of the limiting guide rod 15, and one end of the elastic spring 14 close to the moving block 16 is fixedly connected to the moving block 16, and one end of the elastic spring 14 away from the moving block 16 is fixedly connected to the inner wall of the slide 13, and a cleaning brush 11 is fixedly installed on the moving block 16, and one end of the pull rope 12 is fixedly connected to the cleaning brush 11, and the cleaning brush 11 contacts the bottom of the filter screen 6.

[0028] The winding shaft 7 is rotated to wind the pull rope 12 around the winding shaft 7, thereby pulling the cleaning brush 11, and the moving block 16 slides inside the slideway 13 and on the surface of the limiting guide rod 15, so that the moving block 16 squeezes the elastic spring 14, and when the cleaning brush 11 moves, the bottom of the filter 6 is cleaned, thereby preventing the cleaning brush 11 from accumulating dust for a long time, causing blockage of the filter 6, and affecting the exhaust effect of the breathing valve body 1.

[0029] The transmission box 3 is internally rotatably connected to a rotating support shaft 5, and a blade 4 is fixedly installed on one end of the rotating support shaft 5 extending to the outside of the transmission box 3. The rotating support shaft 5 and the winding shaft 7 are both fixedly sleeved with sprockets 17 on the surface of one end inside the transmission box 3, and chains 18 are transmission-connected to the two sprockets 17.

[0030] When the breathing valve body 1 is exhausting, a strong air pressure will enter the interior of the valve cover 2 and be discharged through the valve cover 2, which will then impact the blades 4, causing the blades 4 to rotate, thereby driving the rotating support shaft 5 to rotate, and the winding shaft 7 is driven to rotate by the rotating support shaft 5, the two sprockets 17 and the chain 18, and then the pull rope 12 is wound around the winding shaft 7 to move the cleaning brush 11. When the breathing valve body 1 is not exhausting, the cleaning brush 11 will be reset by the elastic force of the elastic spring 14, and then the cleaning brush 11 will be reset, which will facilitate the reciprocating movement of the cleaning brush 11 and facilitate cleaning during exhaust, so that the airflow will take away the cleaned dust, thereby improving the cleaning effect.

[0031] The valve cover 2 is internally rotatably connected with a fixed rotating shaft 10, on which a sealing plate 8 is fixedly sleeved. The sealing plate 8 is parallel to the filter screen 6 and is located at the bottom of the filter screen 6. A torsion spring 9 is movably sleeved on one end of the fixed rotating shaft 10. One end of the torsion spring 9 close to the sealing plate 8 is fixedly connected to the sealing plate 8, and one end of the torsion spring 9 away from the sealing plate 8 is fixedly connected to the inner wall of the valve cover 2.

[0032] After the gas enters the interior of the valve cover 2, it will blow the sealing plate 8, causing the sealing plate 8 to flip around the fixed rotating axis 10, thereby causing the torsion spring 9 to deform. When the sealing plate 8 is no longer blown, the sealing plate 8 is reset by the torsion spring 9, thereby achieving sealing of the valve cover 2 and further improving the sealing effect.

[0033] Working principle:

[0034] The winding shaft 7 is rotated to wind the pull rope 12 around the winding shaft 7, thereby pulling the cleaning brush 11, and the moving block 16 slides inside the slideway 13 and on the surface of the limiting guide rod 15, so that the moving block 16 squeezes the elastic spring 14, and when the cleaning brush 11 moves, the bottom of the filter screen 6 is cleaned, thereby preventing the cleaning brush 11 from accumulating dust for a long time.

[0035] When the breathing valve body 1 is exhausting, a strong air pressure will enter the interior of the valve cover 2 and be discharged through the valve cover 2, which will then impact the blades 4, causing the blades 4 to rotate, thereby driving the rotating support shaft 5 to rotate, and the winding shaft 7 is driven to rotate by the rotating support shaft 5, the two sprockets 17 and the chain 18, and then the pull rope 12 is wound around the winding shaft 7 to move the cleaning brush 11. When the breathing valve body 1 is not exhausting, the cleaning brush 11 will be reset by the elastic force of the elastic spring 14, thereby resetting the cleaning brush 11, making it easier for the cleaning brush 11 to move back and forth, and at the same time, it is easier to clean when exhausting.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A breathing valve with a long service life, comprising a breathing valve body (1), characterized in that: A valve cover (2) is fixedly mounted on one side of the breathing valve body (1), a filter screen (6) is fixedly mounted inside the valve cover (2), a transmission box (3) is fixedly mounted inside the valve cover (2), a winding shaft (7) is rotatably connected inside the transmission box (3), a pull rope (12) is wound around the surface of the winding shaft (7), a slideway (13) is provided on the inner wall of the valve cover (2), a moving block (16) is slidably connected inside the slideway (13), a limiting guide rod (15) is fixedly mounted inside the slideway (13), and the surface of the limiting guide rod (15) is slidably connected to the inside of the moving block (16).

2. A breathing valve with a long service life according to claim 1, characterized in that: The surface of the limiting guide rod (15) is movably sleeved with an elastic spring (14); one end of the elastic spring (14) close to the moving block (16) is fixedly connected to the moving block (16); and one end of the elastic spring (14) away from the moving block (16) is fixedly connected to the inner wall of the slideway (13).

3. A breathing valve with a long service life according to claim 2, characterized in that: A cleaning brush (11) is fixedly mounted on the moving block (16), one end of the pull rope (12) is fixedly connected to the cleaning brush (11), and the cleaning brush (11) is in contact with the bottom of the filter screen (6).

4. A breathing valve with a long service life according to claim 3, characterized in that: The transmission box (3) is rotatably connected to a rotation support shaft (5), and a blade (4) is fixedly mounted on one end of the rotation support shaft (5) extending to the outside of the transmission box (3).

5. A breathing valve with a long service life according to claim 4, characterized in that: The rotating support shaft (5) and the winding shaft (7) are both fixedly sleeved with sprockets (17) on the surface of one end inside the transmission box (3), and the two sprockets (17) are transmission-connected with chains (18).

6. A breathing valve with a long service life according to claim 5, characterized in that: The valve cover (2) is internally rotatably connected to a fixed rotating shaft (10), and a sealing plate (8) is fixedly sleeved on the fixed rotating shaft (10). The sealing plate (8) is parallel to the filter screen (6) and is located at the bottom of the filter screen (6).

7. A breathing valve with a long service life according to claim 6, characterized in that: A torsion spring (9) is movably sleeved on one end of the fixed rotating shaft (10); the end of the torsion spring (9) close to the sealing plate (8) is fixedly connected to the sealing plate (8); and the end of the torsion spring (9) away from the sealing plate (8) is fixedly connected to the inner wall of the valve cover (2).

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