Breather valve convenient to maintain

Abstract

The utility model relates to the field of breather valves, and discloses a breather valve convenient to maintain, which comprises a breather valve body, a cover plate is arranged at the top of the breather valve body, the bottom of the cover plate is in contact with the top of the breather valve body, a circular groove is formed in the cover plate, a conical block is arranged in the circular groove, and the conical block is arranged in the circular groove. And a fixing rod is fixedly installed at the top of the conical block, four sets of limiting rods are slidably installed in the circular groove, and the inner ends of the limiting rods make contact with the bottom of the conical block. Through mutual cooperation of the cover plate, the fixing rod, the conical block and other structures, the fixing rod moves towards the bottom to drive the conical block to move towards the bottom, the conical block moves towards the bottom to drive the limiting rod to move towards the outer side, the limiting rod moves towards the outer side to enter the limiting plate, and therefore the cover plate and the breather valve body can be limited; and finally, when the fixed rod moves to a proper distance, the height of the fixed rod is limited through a limiting assembly.

Description

Technical Field

[0001] The utility model relates to the field of breathing valves, in particular to a breathing valve which is easy to maintain. Background Art

[0002] A breathing valve refers to a valve that ensures that the storage tank space is isolated from the atmosphere within a certain pressure range and can be connected to the atmosphere when the pressure exceeds or falls below this 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. The installation of 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, and play 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 return spring, a return 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] The existing breathing valve is generally composed of a valve cover, a valve body and an air flow channel. The valve cover and the valve body are fixedly connected with bolts. The bolts exposed to the outside will generally be soaked in water and rusted or clogged with dust. When the staff needs to open the valve cover to repair the valve body, it is difficult to unscrew the bolts, causing inconvenience in disassembly. Therefore, a breathing valve that is easy to maintain is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a breathing valve that is easy to maintain, aiming to improve the problem in the prior art that the valve cover and the valve body are fixedly connected with bolts. The bolts exposed to the outside generally become rusted by water or clogged with dust. When the staff needs to open the valve cover to repair the valve body, it is difficult to unscrew the bolts, causing inconvenience in disassembly.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A breathing valve that is easy to maintain, comprising a breathing valve body, a cover plate provided on the top of the breathing valve body, the bottom of the cover plate contacting the top of the breathing valve body, a circular groove provided inside the cover plate, a conical block provided inside the circular groove, a fixing rod fixedly installed on the top of the conical block, four groups of limiting rods slidably installed inside the circular groove, the inner ends of the limiting rods contacting the bottom of the conical block, four groups of limiting plates fixedly installed on the surface of the breathing valve body, the limiting plates and the limiting rods plugged in, and a limiting assembly for limiting the fixing rod provided on the top of the cover plate;

[0007] As a further description of the above technical solution:

[0008] The limiting assembly includes a limiting sleeve, the interior of the limiting sleeve is slidably mounted on the surface of the fixed rod, and the bottom of the limiting sleeve is fixedly mounted on the top of the cover plate;

[0009] As a further description of the above technical solution:

[0010] Both sides of the limit rod are fixedly installed with fixed blocks, and the number of the fixed blocks is four. A clamping plate is rotatably installed inside the fixed block through an axle pin. A disc is fixedly installed on the top of the fixed rod, and the clamping plate and the disc are clamped;

[0011] As a further description of the above technical solution:

[0012] A limit spring is sleeved on the surface of the fixing rod, the top of the limit spring is fixedly mounted on the bottom of the disc, and the bottom of the limit spring is fixedly mounted on the top of the limit sleeve;

[0013] As a further description of the above technical solution:

[0014] A return spring is sleeved on the surface of the limit rod, the outer end of the return spring is fixedly mounted on the inner wall of the circular groove, and the inner end of the return spring is fixedly mounted on the inner side of the inner wall of the limit rod;

[0015] As a further description of the above technical solution:

[0016] An annular groove is formed on the top of the breathing valve body, and a sealing ring is fixedly mounted on the bottom of the cover plate, wherein the bottom of the sealing ring contacts the bottom of the inner wall of the annular groove;

[0017] As a further description of the above technical solution:

[0018] An arc-shaped groove is provided inside the disc, a handle is rotatably mounted inside the arc-shaped groove, and the bottom of the handle contacts the bottom of the inner wall of the arc-shaped groove;

[0019] As a further description of the above technical solution:

[0020] The top of the handle is provided with anti-slip grooves, and the number of the anti-slip grooves is several.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the mutual cooperation of the cover plate, the fixing rod and the conical block, the fixing rod moves toward the bottom, driving the conical block to move toward the bottom. The movement of the conical block toward the bottom will drive the limiting rod to move outward. The limiting rod moves outward so that it enters the interior of the limiting plate, thereby limiting the cover plate and the breathing valve body. Finally, when the fixing rod moves to the appropriate distance, the height of the fixing rod is limited by the limiting assembly.

[0023] 2. In the present invention, with the cooperation of the fixed block, the limiting rod and the disc, the conical block moves toward the bottom, which drives the limiting rod to move outward. The limiting rod moves outward so that it enters the interior of the limiting plate. At this time, the clamping plate can be rotated inward at the same time, and the clamping plate will contact the top of the disc, thereby limiting the fixed rod and preventing the fixed rod from driving the conical block to move toward the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a breathing valve body of a breathing valve that is easy to maintain proposed by the utility model;

[0025] Figure 2 This is a top structural diagram of a breathing valve body of a breathing valve that is easy to maintain proposed by the utility model;

[0026] Figure 3 This is a cross-sectional view of a cover plate of a breathing valve that is easy to maintain, as proposed by the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Breathing valve body; 2. Cover plate; 3. Circular groove; 4. Conical block; 5. Fixed rod; 6. Limit rod; 7. Limit plate; 8. Limit sleeve; 9. Fixed block; 10. Clamping plate; 11. Disc; 12. Limit spring; 13. Return spring; 14. Annular groove; 15. Sealing ring; 16. Arc groove; 17. Handle; 18. Anti-slip pattern. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 3-5 The utility model provides an embodiment: a breathing valve that is easy to maintain, including a breathing valve body 1, a cover plate 2 is provided on the top of the breathing valve body 1, the bottom of the cover plate 2 is in contact with the top of the breathing valve body 1, a circular groove 3 is provided inside the cover plate 2, a conical block 4 is provided inside the circular groove 3, a fixing rod 5 is fixedly installed on the top of the conical block 4, four groups of limiting rods 6 are slidably installed inside the circular groove 3, the inner end of the limiting rod 6 is in contact with the bottom of the conical block 4, the bottom of the conical block 4 is conical, and the top of the conical block 4 is also conical, so that the bottom of the conical block 4 can be in contact with the top of the limiting rod 6. Four sets of limit plates 7 are fixedly installed on the surface of the breathing valve body 1, and the limit plates 7 and the limit rods 6 are plugged in. A limit assembly for limiting the fixing rod 5 is provided on the top of the cover plate 2. First, the fixing rod 5 can be pushed toward the bottom. The movement of the fixing rod 5 toward the bottom drives the conical block 4 to move toward the bottom. The movement of the conical block 4 toward the bottom will drive the limit rod 6 to move outward. The movement of the limit rod 6 outward causes it to enter the interior of the limit plate 7, thereby limiting the cover plate 2 and the breathing valve body 1. Finally, when the fixing rod 5 moves to the appropriate distance, the height of the fixing rod 5 is limited by the limit assembly.

[0033] Reference Figure 3-5The limit assembly includes a limit sleeve 8, the interior of the limit sleeve 8 and the inner sliding installation of the fixed rod 5, the bottom of the limit sleeve 8 and the top of the cover plate 2 are fixedly installed, which can improve the stability of the fixed rod 5 when it moves up and down, and can also pull the limit sleeve 8 toward the top, and the limit sleeve 8 can drive the cover plate 2 and the breathing valve body 1 to separate toward the top, thereby achieving the convenience of disassembly and maintenance of the breathing valve body 1. Fixed blocks 9 are fixedly installed on both sides of the limit rod 6. The number of fixed blocks 9 is four groups. The interior of the fixed block 9 is rotated by the axle pin and a clamping plate 10 is installed. The top of the fixed rod 5 is fixedly installed with a disc 11, and the clamping plate 10 and the disc 11 are clamped, which can push the fixed rod 5 toward the bottom. The fixed rod 5 moves toward the bottom and drives the conical block 4 to move toward the bottom. The movement of the conical block 4 toward the bottom will drive the limit rod 6 to move outward. The limit rod 6 moves outward so that it will enter the interior of the limit plate 7. When the cam 11 is in the state of being moved, the cam 11 is in the state of being moved, and the cam 11 is in the state of being moved.

[0034] Reference Figure 3-5 The top of the breathing valve body 1 is provided with an annular groove 14, and the bottom of the cover plate 2 is fixedly installed with a sealing ring 15. The bottom of the sealing ring 15 contacts the bottom of the inner wall of the annular groove 14, which can increase the sealing between the cover plate 2 and the breathing valve body 1 and prevent air leakage between the cover plate 2 and the breathing valve body 1. An arc groove 16 is provided inside the disc 11, and a handle 17 is rotatably installed inside the arc groove 16. The bottom of the handle 17 contacts the bottom of the inner wall of the arc groove 16, so that the handle 17 can be rotated and placed inside the arc groove 16 when not in use. When the handle 17 is needed, the handle 17 can be flipped inside the arc groove 16, so that the handle 17 can be pulled toward the top, so that it drives the fixed rod 5 and the conical block 4 to move toward the top. The top of the handle 17 is provided with anti-slip grooves 18, and the number of anti-slip grooves 18 is several, which can increase the friction when pulling the handle 17, thereby preventing slipping when pulling the handle 17.

[0035] Working principle: First, place the bottom of the cover plate 2 on the top of the breathing valve body 1. At this time, the sealing ring 15 moves toward the bottom and enters the annular groove 14. Then, the fixing rod 5 can be pushed toward the bottom. The fixing rod 5 moves toward the bottom, driving the conical block 4 to move toward the bottom. The conical block 4 moves toward the bottom and drives the limiting rod 6 to move outward. The limiting rod 6 moves outward so that it enters the inside of the limiting plate 7, thereby limiting the cover plate 2 and the breathing valve body 1. At this time, the card plate 10 can be rotated inward at the same time, and the card plate 10 will contact the top of the disc 11, thereby limiting the fixing rod 5.

[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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A breathing valve that is easy to maintain, comprising a breathing valve body (1), characterized in that: A cover plate (2) is provided on the top of the breathing valve body (1), the bottom of the cover plate (2) contacts the top of the breathing valve body (1), a circular groove (3) is provided inside the cover plate (2), a conical block (4) is provided inside the circular groove (3), a fixing rod (5) is fixedly installed on the top of the conical block (4), four groups of limiting rods (6) are slidably installed inside the circular groove (3), the inner ends of the limiting rods (6) contact the bottom of the conical block (4), four groups of limiting plates (7) are fixedly installed on the surface of the breathing valve body (1), the limiting plates (7) and the limiting rods (6) are plugged in, and a limiting component for limiting the fixing rod (5) is provided on the top of the cover plate (2).

2. The maintenance-friendly breathing valve according to claim 1, characterized in that: The limiting assembly comprises a limiting sleeve (8), the interior of the limiting sleeve (8) is slidably mounted on the surface of the fixing rod (5), and the bottom of the limiting sleeve (8) is fixedly mounted on the top of the cover plate (2).

3. The easy-to-maintain breathing valve according to claim 1, characterized in that: Fixed blocks (9) are fixedly installed on both sides of the limiting rod (6), and the number of the fixed blocks (9) is four. A clamping plate (10) is rotatably installed inside the fixed block (9) through an axle pin. A disc (11) is fixedly installed on the top of the fixing rod (5), and the clamping plate (10) and the disc (11) are clamped.

4. The maintenance-friendly breathing valve according to claim 3, characterized in that: The surface of the fixing rod (5) is sleeved with a limiting tension spring (12), the top of the limiting tension spring (12) and the bottom of the disc (11) are fixedly installed, and the bottom of the limiting tension spring (12) and the top of the limiting sleeve (8) are fixedly installed.

5. The maintenance-friendly breathing valve according to claim 1, characterized in that: The surface of the limiting rod (6) is sleeved with a reset spring (13), the outer end of the reset spring (13) is fixedly mounted on the inner wall of the circular groove (3), and the inner end of the reset spring (13) is fixedly mounted on the inner side of the inner wall of the limiting rod (6).

6. The maintenance-friendly breathing valve according to claim 1, characterized in that: An annular groove (14) is provided on the top of the breathing valve body (1), and a sealing ring (15) is fixedly installed on the bottom of the cover plate (2), and the bottom of the sealing ring (15) contacts the bottom of the inner wall of the annular groove (14).

7. The maintenance-friendly breathing valve according to claim 3, characterized in that: An arc-shaped groove (16) is provided inside the disc (11), and a handle (17) is rotatably installed inside the arc-shaped groove (16). The bottom of the handle (17) contacts the bottom of the inner wall of the arc-shaped groove (16).

8. The maintenance-friendly breathing valve according to claim 7, characterized in that: The top of the handle (17) is provided with anti-slip grooves (18), and the number of the anti-slip grooves (18) is several.

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