Fire-retardant burning-resistant breather valve

Abstract

The utility model discloses a fire-retardant burning-resistant breather valve which comprises a valve body, a connecting pipe is fixedly connected in the valve body, a valve cover is fixedly connected to the top of the valve body, a valve rod is fixedly embedded in the outer wall of the valve cover, two valves are arranged on the outer wall of the valve rod in a sliding and sleeved mode, and a butt joint ring is fixedly connected to the bottom of the valve body. And the inner wall of the butt joint ring is slidably connected with a fire retardant layer, the interior of the butt joint ring is fixedly connected with a circular ring, and an annular groove is formed in the bottom of the butt joint ring. The top of the fire-retardant layer is limited through the circular ring, the bottom of the fire-retardant layer is supported through the supporting ring, and meanwhile the fire-retardant layer is arranged on the connecting pipe in a sleeving mode so that the fire-retardant layer can be fixed in the valve body. And by arranging a bearing ring, a sealing strip, a round sleeve, a spring, a T-shaped rod and a pull ring, the valve body does not need to be disassembled and assembled, limiting of the fire retardant layer can be quickly relieved, and the fire retardant layer is leaked out and cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-retardant breathing valves, in particular to a fire-retardant and burn-resistant breathing valve. Background Art

[0002] Fire-blocking breathing valve (or breathing valve with fire-blocking function) is a common safety device, which is widely used in various containers, pipelines and equipment to prevent the spread of fire or explosion and protect the safety of equipment and personnel. Its working principle is based on preventing flames, explosions and harmful gases from entering the interior of the equipment or adjacent areas, while allowing normal circulation and breathing of gases. When the flame contacts the fire-blocking layer on the outside of the fire-blocking breathing valve, this device can react quickly and prevent the flame from entering the interior by blocking the propagation path of the flame. Usually, the fire-blocking device is made of non-combustible materials and has certain thermal insulation properties to ensure that the flame cannot pass through.

[0003] In the prior art, after the fire-retardant breathing valve has been used for a long time, the oil and gas in the storage tank often pass through the gap between the fire-retardant layers, and the fine particles mixed in the oil and gas will accumulate in the fire-retardant layer. In addition, the fire-retardant breathing valve is installed outdoors, and dust and debris in the air will also enter the fire-retardant layer, which will cause the fire-retardant layer to be blocked for a long time. Even if the set pressure of the product is reached, the back pressure caused by the blockage will prevent the gas from being discharged. The existing fire-retardant layer is installed inside the valve body, and the fire-retardant breathing valve and the fire-retardant layer need to be disassembled for regular cleaning. Therefore, we propose a fire-retardant and burn-resistant breathing valve to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a fire-resistant and burn-resistant breathing valve.

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

[0006] A fire-resistant and burn-resistant breathing valve comprises a valve body, the interior of which is fixedly connected with a connecting pipe, the top of which is fixedly connected with a valve cover, the outer wall of which is fixedly inlaid with a valve stem, the outer wall of which is slidably sleeved with two valves, the bottom of the valve body is fixedly connected with a docking ring, the inner wall of which is slidably connected with a fire-resistant layer, the interior of which is fixedly connected with a circular ring, the bottom of which is provided with an annular groove, the inner wall of which is slidably connected with a sealing strip, the bottom of which is fixedly connected with a supporting ring, and the top of which is provided with a locking mechanism.

[0007] Preferably, the locking mechanism includes two round sleeves, the bottoms of the two round sleeves are rotatably connected to the top of the supporting ring, the inside of the round sleeve is fixedly connected to a spring, the top of the spring is fixedly connected to a T-rod, the outer wall of the T-rod is slidably connected to the inner wall of the round sleeve, and the top threaded sleeve of the T-rod is provided with a pull ring, and the position of the round sleeve and the T-rod is fixed by setting the pull ring.

[0008] Preferably, a flange is fixedly connected to the bottom of the connecting pipe, and a flow cavity is provided inside the valve body, which is fixed to the top of the storage tank by setting a flange.

[0009] Preferably, the bottom of the ring is in contact with the top of the fire barrier layer.

[0010] Preferably, the top of the support ring contacts the bottom of the fire barrier layer, and the bottom of the fire barrier layer is supported by providing the support ring.

[0011] Preferably, the bottom of the pull ring is pressed against the outer wall of the docking ring.

[0012] Preferably, the outer wall of the docking ring is provided with two sliding grooves, the inner walls of the two sliding grooves are respectively slidably connected to the outer walls of the two T-shaped rods, and the auxiliary pull ring is located on the docking ring by providing the sliding grooves.

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

[0014] In this solution, a circular ring is used to limit the top of the fire barrier layer, and a supporting ring is used to support the bottom of the fire barrier layer. At the same time, the fire barrier layer is sleeved on the connecting pipe to fix it in the valve body. By arranging the supporting ring, the sealing strip, the circular sleeve, the spring, the T-bar and the pull ring, the limit on the fire barrier layer can be quickly released without disassembling the valve body, and the fire barrier layer can be leaked out for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a fire-resistant and burn-resistant breathing valve proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional structure diagram of a fire-resistant and burn-resistant breathing valve proposed by the utility model;

[0018] Figure 3 A fire-resistant and burn-resistant breathing valve proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0019] Figure 4 The utility model provides a schematic diagram of the fire-retardant layer structure of a fire-retardant and burn-resistant breathing valve.

[0020] In the figure: 1. valve body; 2. connecting pipe; 3. flange; 4. valve cover; 5. valve stem; 6. valve; 7. flow chamber; 8. fire barrier layer; 9. docking ring; 10. round ring; 11. supporting ring; 12. sealing strip; 13. round sleeve; 14. spring; 15. T-bar; 16. pull ring. DETAILED DESCRIPTION

[0021] 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 of 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.

[0022] Depend on Figure 1-Figure 4 As shown, it relates to a fire-resistant and burn-resistant breathing valve, including a valve body 1, a connecting pipe 2 is fixedly connected to the inside of the valve body 1, a flange 3 is fixedly connected to the bottom of the connecting pipe 2, a valve cover 4 is fixedly connected to the top of the valve body 1, a valve stem 5 is fixedly inlaid on the outer wall of the valve cover 4, and two valves 6 are provided on the sliding sleeve of the outer wall of the valve stem 5. The valve 6 is closed by its own weight. When positive and negative pressures are generated in the storage tank, the valve 6 is opened to ensure the pressure balance in the storage tank. A flow cavity 7 is provided inside the valve body 1, and the flow cavity 7 provides the flow direction of the gas.

[0023] A docking ring 9 is fixedly connected to the bottom of the valve body 1, and a fire barrier layer 8 is slidably connected to the inner wall of the docking ring 9. The fire barrier layer 8 is made of stainless steel. A circular ring 10 is fixedly connected to the inside of the docking ring 9. The bottom of the circular ring 10 contacts the top of the fire barrier layer 8, and the circular ring 10 limits the top of the fire barrier layer 8. An annular groove is provided at the bottom of the docking ring 9, and a sealing strip 12 is slidably connected to the inner wall of the annular groove. A supporting ring 11 is fixedly connected to the bottom of the sealing strip 12. The sealing strip 12 facilitates docking and installation between the supporting ring 11 and the docking ring 9. The top of the supporting ring 11 contacts the bottom of the fire barrier layer 8, and the supporting ring 11 supports the bottom of the fire barrier layer 8.

[0024] A locking mechanism is provided at the top of the supporting ring 11, and the locking mechanism includes two circular sleeves 13. The bottoms of the two circular sleeves 13 are rotatably connected to the top of the supporting ring 11. A spring 14 is fixedly connected to the inside of the circular sleeve 13, and a T-bar 15 is fixedly connected to the top of the spring 14. The outer wall of the T-bar 15 is slidably connected to the inner wall of the circular sleeve 13. The elastic force of the spring 14 causes the T-bar 15 to move downward. When the pull ring 16 is located on the docking ring 9, the tension of the spring 14 initially limits it. The pull ring 16 is rotated to squeeze it on the docking ring 9 to fix its position.

[0025] The top threaded sleeve of the T-shaped rod 15 is provided with a pull ring 16, the bottom of the pull ring 16 is pressed against the outer wall of the docking ring 9, and the outer wall of the docking ring 9 is provided with two slide grooves, and the inner walls of the two slide grooves are slidably connected with the outer walls of the two T-shaped rods 15 respectively.

[0026] Working principle: When in use, the valve body 1 realizes the opening and closing of the valve 6 through positive and negative pressures during operation, completes the breathing effect, and ensures the pressure balance in the storage tank; when there is dust or debris on the surface of the fire barrier layer 8, which blocks the fire barrier layer 8, the pull ring 16 is rotated so that the pull ring 16 does not squeeze the top of the docking ring 9, and the pull ring 16 is lifted and rotated outward. The rotation of the pull ring 16 causes the T-bar 15 and the round sleeve 13 to rotate, and at the same time, the elastic force of the spring 14 causes the T-bar 15 to shrink into the round sleeve 13, and the pull ring 16 no longer supports and limits the supporting ring 11, and the supporting ring 11 is removed from the docking ring 9, the bottom support of the fire barrier layer 8 is released, and the fire barrier layer 8 is moved downward from the connecting pipe 2. The fire barrier layer 8 leaks out and is cleaned with a brush or cleaning equipment.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fire-resistant and burn-resistant breathing valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to a connecting pipe (2) inside, the valve body (1) is fixedly connected to a valve cover (4) on the top, the valve cover (4) is fixedly inlaid with a valve stem (5) on the outer wall, the valve stem (5) is slidably sleeved with two valves (6), the valve body (1) is fixedly connected to a docking ring (9) on the bottom, the docking ring (9) is slidably connected to a fire barrier layer (8), the docking ring (9) is fixedly connected to a circular ring (10) inside, the docking ring (9) is provided with an annular groove at the bottom, the inner wall of the annular groove is slidably connected to a sealing strip (12), the bottom of the sealing strip (12) is fixedly connected to a supporting ring (11), and the top of the supporting ring (11) is provided with a locking mechanism.

2. The fire-resistant and burn-resistant breathing valve according to claim 1 is characterized in that: The locking mechanism comprises two round sleeves (13), the bottoms of the two round sleeves (13) are rotatably connected to the top of the supporting ring (11), a spring (14) is fixedly connected inside the round sleeve (13), a T-shaped rod (15) is fixedly connected to the top of the spring (14), the outer wall of the T-shaped rod (15) is slidably connected to the inner wall of the round sleeve (13), and a pull ring (16) is provided on the top threaded sleeve of the T-shaped rod (15).

3. The fire-resistant and burn-resistant breathing valve according to claim 1 is characterized in that: A flange (3) is fixedly connected to the bottom of the connecting pipe (2), and a flow chamber (7) is provided inside the valve body (1).

4. The fire-resistant and burn-resistant breathing valve according to claim 1 is characterized in that: The bottom of the ring (10) is in contact with the top of the fire barrier layer (8).

5. The fire-resistant and burn-resistant breathing valve according to claim 1 is characterized in that: The top of the support ring (11) contacts the bottom of the fire barrier layer (8).

6. The fire-resistant and burn-resistant breathing valve according to claim 2 is characterized in that: The bottom of the pull ring (16) is pressed against the outer wall of the docking ring (9).

7. The fire-resistant and burn-resistant breathing valve according to claim 2 is characterized in that: The outer wall of the docking ring (9) is provided with two sliding grooves, and the inner walls of the two sliding grooves are respectively slidably connected to the outer walls of the two T-shaped rods (15).

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