Gasket type fire-retardant breather valve

Abstract

The utility model discloses a gasket type fire-retardant breather valve which comprises a valve body, a connecting flange is arranged at the bottom end of the valve body, a valve cover is arranged at the top end of the valve body, an exhalation valve seat is arranged on one side of the valve body, a rainproof cap is arranged on the outer side of the exhalation valve seat, and a positive pressure valve disc is arranged at the bottom of the inner side of the exhalation valve seat. A valve disc guide rod is arranged in the middle of the top end of the positive pressure valve disc, and a negative pressure valve disc is arranged at the top end of the exhalation valve seat. The anti-seepage assembly is arranged on the inner side of the rainproof cap, and the annular waterproof piece is arranged on the edge of the inner side of the rainproof cap during use, so that rainwater is prevented from seeping into the inner side of the rainproof cap from the edge of the inner side of the rainproof cap through the waterproof piece, and water enters the fire-retardant breather valve; and in addition, the normal breathing ventilation effect of the fire-retardant breather valve is ensured through the through holes obliquely formed in the waterproof sheet, so that the rainproof and waterproof performance of the fire-retardant breather valve is further effectively improved, and the practicability is high.

Description

Technical Field

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

[0002] The fire-blocking breathing valve is a ventilation device installed on the top of the tank to maintain the air pressure balance inside the tank and prevent the tank from being damaged due to excessive pressure difference between the inside and outside. It is widely used in fire protection, industry and other industries to protect workers from dangerous factors such as fire, smoke and harmful gases.

[0003] For example, a gasket-type fire-blocking breathing valve disclosed in the utility model with authorization announcement number CN216643202U includes an exhalation valve disc, a shell assembly, an intake valve disc, a fire-blocking plate, etc. When the storage tank is fed or the temperature rises, the pressure in the storage tank increases, and the exhalation valve disc opens when it reaches the set value, and the pressure is released. When the pressure decreases, the exhalation valve disc falls back. This product places a gasket-type fire-blocking disc that performs the fire-blocking function on the outside of the exhalation and inhalation of the breathing valve. When a fire occurs, the flame can be blocked on the outside of the breathing valve, so that the flame cannot damage the valve disc of the breathing valve, thereby avoiding material losses for customers and also avoiding environmental pollution caused by leaked materials. It is more economical and environmentally friendly. The gasket-type fire-blocking disc adopts a side ventilation structure, and the installation position is far away from the valve disc of the breathing valve, thereby avoiding damage to the valve disc of the breathing valve due to the high temperature of the flame, so that the product can withstand multiple fire situations. However, during the application of this technical solution, rainwater can still enter the valve through the side gaps of the rainproof cap, affecting the normal operation of the fire-blocking breathing valve. There is a technical problem that it cannot effectively prevent rainwater from seeping into the valve through the side gaps of the rainproof cap while ensuring the normal operation of the fire-blocking breathing valve. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a gasket type fire-blocking breathing valve, which can solve the problem that rainwater can still enter the valve through the side gaps of the rainproof cap, affecting the normal operation of the fire-blocking breathing valve. There is a technical problem that it is not possible to effectively prevent rainwater from seeping into the valve through the side gaps of the rainproof cap while ensuring the normal operation of the fire-blocking breathing valve.

[0005] To solve the above technical problems, the utility model provides the following technical solutions: a gasket-type fire-blocking breathing valve, comprising a valve body, a connecting flange is provided at the bottom end of the valve body, a valve cover is provided at the top end of the valve body, an exhalation valve seat is provided on one side of the valve body, a rain cap is provided on the outside of the exhalation valve seat, a positive pressure valve disc is provided on the bottom inside the exhalation valve seat, a valve disc guide rod is provided at the middle position of the top end of the positive pressure valve disc, a negative pressure valve disc is provided at the top end of the exhalation valve seat, a valve disc sleeve rod is inserted at the middle position of the top end of the negative pressure valve disc, a fire-blocking plate is provided on one side inside the exhalation valve seat, a waterproof sheet is provided at the inner edge of the rain cap, a through hole is provided inside the waterproof sheet, and a reinforced sealing component is provided on the inner side of the valve cover.

[0006] As a preferred technical solution of the utility model, the waterproof sheet is annular, the through holes are arranged at equal intervals inside the waterproof sheet, and the through holes are designed to be inclined inside the waterproof sheet.

[0007] As a preferred technical solution of the utility model, the exhalation valve seat is communicated with the interior of the valve body, and the valve cover and the valve body are connected by bolts.

[0008] As a preferred technical solution of the utility model, the top end of the valve disc guide rod is inserted into the interior of the valve disc sleeve rod, and the top end of the valve disc sleeve rod is inserted into the middle position of the top inner side of the valve cover.

[0009] As a preferred technical solution of the utility model, the reinforced sealing assembly includes a clamping plate, the clamping plate is arranged on the inner side of the valve cover, and a high temperature resistant sealing gasket is arranged on the outer side of the clamping plate.

[0010] As a preferred technical solution of the utility model, the clamping plate and the high temperature resistant sealing gasket are annular, and the bottom end of the clamping plate is inserted into the top end of the valve body.

[0011] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0012] 1. An anti-seepage component is arranged on the inner side of the rainproof cap. When in use, an annular waterproof sheet is arranged on the inner edge of the rainproof cap. The waterproof sheet prevents rainwater from penetrating into the inner side of the rainproof cap from the inner edge of the rainproof cap, causing water to enter the fire-blocking breathing valve. The through holes arranged obliquely in the waterproof sheet ensure the normal breathing and ventilation effect of the fire-blocking breathing valve, thereby further effectively improving the rainproof and waterproof performance of the fire-blocking breathing valve, and the feasibility is strong;

[0013] 2. A reinforced sealing assembly is provided on the inner side of the valve cover, and a clamping plate is clamped to the top of the inner side of the valve body while the valve cover is installed on the valve body. After the valve cover and the valve body are fixedly connected by bolts, the connection is reinforced by the clamping plate, and the sealing of the connection is improved by a high-temperature resistant sealing gasket, so that the structure strength of the fire-blocking breathing valve is higher and the sealing performance is better, which further improves the safety of the fire-blocking breathing valve when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of a partial cross-sectional structure of a rain cap according to the utility model;

[0017] Figure 4 For the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0018] Among them: 1. Valve body; 2. Exhalation valve seat; 3. Valve cover; 4. Rain cap; 5. Connecting flange; 6. Positive pressure valve disc; 7. Valve disc guide rod; 8. Negative pressure valve disc; 9. Valve disc sleeve rod; 10. Clamping plate; 11. Fire barrier plate; 12. Waterproof sheet; 13. Through hole; 14. High temperature resistant sealing gasket. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0020] Example

[0021] Please refer to Figure 1-4As shown, the utility model provides a gasket-type fire-blocking breathing valve, comprising a valve body 1, a connecting flange 5 is arranged at the bottom end of the valve body 1, a valve cover 3 is arranged at the top end of the valve body 1, an exhalation valve seat 2 is arranged on one side of the valve body 1, the exhalation valve seat 2 is communicated with the interior of the valve body 1, the valve cover 3 and the valve body 1 are connected by bolts, a rainproof cap 4 is arranged on the outside of the exhalation valve seat 2, a positive pressure valve disc 6 is arranged at the bottom inside the exhalation valve seat 2, a valve disc guide rod 7 is arranged at the middle position of the top end of the positive pressure valve disc 6, a negative pressure valve disc 8 is arranged at the top end of the exhalation valve seat 2, and the middle position of the top end of the negative pressure valve disc 8 is arranged. A valve disc sleeve rod 9 is inserted at the intermediate position, the top end of the valve disc guide rod 7 is inserted into the inside of the valve disc sleeve rod 9, and the top end of the valve disc sleeve rod 9 is inserted into the middle position of the inner top of the valve cover 3. When the fire-blocking breathing valve is working, the positive pressure valve disc 6 or the negative pressure valve disc 8 is opened according to the pressure in the tank to discharge or supplement the pressure, and the positive pressure valve disc 6 and the negative pressure valve disc 8 are opened stably guided by the valve disc guide rod 7 and the valve disc sleeve rod 9, so as to ensure that the pressure in the tank is maintained in a safe range. A fire-blocking plate 11 is arranged on one side of the inside of the exhalation valve seat 2, and the fire-blocking plate 11 is used to prevent the flame from damaging the breathing valve;

[0022] As a further implementation of this embodiment, Figure 1 , Figure 2 and Figure 3 As shown, an annular waterproof sheet 12 is provided at the inner edge of the rain cap 4, and the waterproof sheet 12 prevents rainwater from penetrating from the inner edge of the rain cap 4 to the inner side thereof, causing water to enter the fire-blocking breathing valve. Through holes 13 are provided inside the waterproof sheet 12, and the through holes 13 are arranged at equal intervals inside the waterproof sheet 12, and the through holes 13 are inclined inside the waterproof sheet 12. The through holes 13 inclinedly arranged in the waterproof sheet 12 ensure the normal breathing and ventilation effect of the fire-blocking breathing valve, thereby further effectively improving the rainproof and waterproof performance of the fire-blocking breathing valve.

[0023] When in use, the annular waterproof sheet 12 is arranged at the inner edge of the rainproof cap 4, and the waterproof sheet 12 prevents rainwater from penetrating from the inner edge of the rainproof cap 4 to the inner side thereof, causing water to enter the fire-blocking breathing valve, and the through hole 13 obliquely arranged in the waterproof sheet 12 ensures the normal breathing and ventilation effect of the fire-blocking breathing valve;

[0024] As a further implementation of this embodiment, Figure 1 , Figure 2 and Figure 4As shown, a strengthening sealing assembly is arranged on the inner side of the valve cover 3, and the strengthening sealing assembly includes an annular clamping plate 10, which is arranged on the inner side of the valve cover 3, and an annular high temperature resistant sealing gasket 14 is arranged on the outer side of the clamping plate 10, and the bottom end of the clamping plate 10 is inserted into the top end of the valve body 1, so as to achieve the purpose of strengthening and reinforcing the connection, and improve the sealing of the connection by the high temperature resistant sealing gasket 14, so that the structural strength of the fire-blocking breathing valve is higher and the sealing performance is better, and the safety of the fire-blocking breathing valve when in use is further improved;

[0025] While installing the valve cover 3 onto the valve body 1, the clamping plate 10 is clamped onto the top of the valve body 1. After the valve cover 3 and the valve body 1 are fixedly connected by bolts, the connection is strengthened by the clamping plate 10, and the sealing effect of the connection is better by the high temperature resistant sealing gasket 14;

[0026] Specific working principle:

[0027] When using the fire-blocking breathing valve, when assembling the fire-blocking breathing valve, install the valve cover 3 on the valve body 1 and snap the clamping plate 10 onto the top of the valve body 1. After the valve cover 3 and the valve body 1 are fixedly connected by bolts, the connection is strengthened by the clamping plate 10, and the sealing effect of the connection is better by the high-temperature resistant sealing gasket 14. The fire-blocking breathing valve is connected to the tank body through the connecting flange 5. When the fire-blocking breathing valve is working, the positive pressure valve disc 6 or the negative pressure valve disc 8 is opened according to the pressure in the tank to release or In addition, the positive pressure valve disc 6 and the negative pressure valve disc 8 are stably guided in the opening state by the valve disc guide rod 7 and the valve disc sleeve rod 9, so as to ensure that the pressure in the tank is maintained in a safe range, and the fire-blocking plate 11 is used to prevent flames from damaging the breathing valve. In rainy and snowy weather, the rain cap 4 is used to prevent rainwater from entering the valve, and the waterproof sheet 12 is used to prevent rainwater from seeping into the inner side of the rain cap 4 from the inner edge thereof, causing water to enter the fire-blocking breathing valve. At the same time, the through hole 13 obliquely arranged in the waterproof sheet 12 is used to ensure the normal breathing and ventilation effect of the fire-blocking breathing valve.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gasket-type fire-blocking breathing valve, comprising a valve body (1), characterized in that: A connecting flange (5) is provided at the bottom end of the valve body (1), a valve cover (3) is provided at the top end of the valve body (1), an exhalation valve seat (2) is provided on one side of the valve body (1), a rainproof cap (4) is provided on the outer side of the exhalation valve seat (2), a positive pressure valve disc (6) is provided at the bottom of the inner side of the exhalation valve seat (2), a valve disc guide rod (7) is provided at the middle position of the top end of the positive pressure valve disc (6), a negative pressure valve disc (8) is provided at the top end of the exhalation valve seat (2), a valve disc sleeve rod (9) is inserted at the middle position of the top end of the negative pressure valve disc (8), a fire barrier (11) is provided on one side of the interior of the exhalation valve seat (2), a waterproof sheet (12) is provided at the inner edge of the rainproof cap (4), a through hole (13) is provided inside the waterproof sheet (12), and a reinforced sealing component is provided on the inner side of the valve cover (3).

2. A gasket type fire-stop breathing valve according to claim 1, characterized in that: The waterproof sheet (12) is annular in shape, the through holes (13) are arranged at equal intervals inside the waterproof sheet (12), and the through holes (13) are designed to be inclined inside the waterproof sheet (12).

3. A gasket type fire-blocking breathing valve according to claim 1, characterized in that: The exhalation valve seat (2) is communicated with the interior of the valve body (1), and the valve cover (3) and the valve body (1) are connected via bolts.

4. A gasket type fire-stop breathing valve according to claim 1, characterized in that: The top end of the valve disc guide rod (7) is inserted into the interior of the valve disc sleeve rod (9), and the top end of the valve disc sleeve rod (9) is inserted into the middle position of the top of the inner side of the valve cover (3).

5. A gasket type fire-stop breathing valve according to claim 1, characterized in that: The reinforced sealing assembly comprises a clamping plate (10), wherein the clamping plate (10) is arranged on the inner side of the valve cover (3), and a high temperature resistant sealing gasket (14) is arranged on the outer side of the clamping plate (10).

6. A gasket type fire-stop breathing valve according to claim 5, characterized in that: The clamping plate (10) and the high temperature resistant sealing gasket (14) are annular in shape, and the bottom end of the clamping plate (10) is inserted into the top end of the valve body (1).

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