Burning-resistant fire-retardant breather valve

Abstract

The utility model relates to a burning-resistant fire-retardant breather valve which comprises a valve body, a fire arrester connecting flange is fixedly connected to the top of the outer side wall of the valve body, a fire arrester is installed on the fire arrester connecting flange, a fixing plate is fixedly connected to the bottom wall of the valve body, and a guide cylinder is fixedly connected to the bottom wall of the fixing plate. A flange base is fixedly connected to the bottom wall of the guide cylinder, a supporting cylinder is fixedly connected to the upper wall of the fixing plate located in the valve body, an exhalation valve disc assembly is arranged on the upper wall of the supporting cylinder, an inhalation valve disc assembly is connected to the exhalation valve disc assembly, and a supporting column is fixedly connected to the inner wall of the guide cylinder. A valve rod fixedly penetrates through the middle of the supporting column. Compared with the prior art, the device has the advantages that the occupied space and the weight are greatly reduced, the cost is saved, and the pressure of the storage tank can be automatically adjusted when the pressure of the storage tank is too large or too small, so that the storage tank is prevented from being damaged.

Description

Technical Field

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

[0003] After searching, it was found that a Chinese patent with publication number CN215059815U in the prior art discloses an integrated burn-resistant fire-retardant breathing valve, which is provided with fire-retardant elements on the atmosphere side of the vacuum end and the pressure end. The fire-retardant element includes a fire-retardant disk and a flame arrester composed of a fire-retardant disk integrated ring. The flame arrester is composed of a plurality of small fire-retardant disks distributed in a ring on the fire-retardant disk integrated ring. The integrated burn-resistant fire-retardant breathing valve is also provided with a rain cover, which is fixed by a fusible element, bolts and a spring.

[0004] The above patent has the following main deficiencies: the device greatly increases the occupied space and weight by setting a side cavity on one side of the valve body. At the same time, when the storage tank explodes, the flame will enter the side cavity, which may easily cause a "backfire" accident. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a burn-resistant and fire-resistant breathing valve to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is: a burn-resistant and fire-resistant breathing valve, including a valve body, a flame arrester connecting flange is fixedly connected to the top of the outer wall of the valve body, a flame arrester is installed on the flame arrester connecting flange, the bottom wall of the valve body is fixedly connected to a fixing plate, the bottom wall of the fixing plate is fixedly connected to a guide cylinder, the bottom wall of the guide cylinder is fixedly connected to a flange base, the upper wall of the fixing plate located in the valve body is fixedly connected to a support cylinder, the upper wall of the support cylinder is provided with an exhalation valve disc assembly, the exhalation valve disc assembly is connected to an inhalation valve disc assembly, the inner wall of the guide cylinder is fixedly connected to a support column, and a valve stem is fixedly passed through the middle of the support column.

[0007] As an improvement: the exhalation valve disc assembly includes an exhalation valve disc, a circular hole is opened in the center of the exhalation valve disc, a lower spring seat is arranged in the center of the circular hole, a plurality of fixing columns are evenly fixedly connected between the outer wall of the lower spring seat and the side wall of the circular hole, a spring is fixedly connected to the upper wall of the lower spring seat, the other end of the spring is fixedly connected to the upper spring seat, a guide sleeve is passed through the upper spring seat and the lower spring seat for sliding up and down, an upper fixing nut is threaded on the top of the guide sleeve, the guide sleeve is located on the central axis of the spring, and the bottom wall of the exhalation valve disc is fixedly connected to the air inlet cylinder.

[0008] As an improvement: the intake valve disc assembly includes an intake valve disc, and the bottom inner wall of the intake valve disc is fixedly connected to an intake pressure plate, the bottom end of the guide sleeve passes through the intake pressure plate and the intake valve disc and is threadedly connected to a lower fixing nut, a nut washer is provided between the lower fixing nut and the intake valve disc, and the top end of the valve stem extends into the guide sleeve and can slide up and down with the inner wall of the guide sleeve.

[0009] As an improvement: the bottom wall of the exhalation valve disc is fixedly connected with an exhalation sealing membrane, and the upper wall of the inhalation valve disc is fixedly connected with an inhalation sealing membrane.

[0010] As an improvement: the flame arrester includes a heat sink and a rain cap, the bottom wall of the heat sink is fixedly connected to a flange support plate, a plurality of openings are evenly opened on the heat sink, a fire arrester grid is arranged in the opening, a plurality of support rods are evenly fixed to the upper wall of the heat sink, the top ends of the support rods pass through the rain cap and are fixed by nuts.

[0011] As an improvement: a lower bracket is embedded in the corresponding opening of the flange support plate, an upper bracket is provided on the top of the fire barrier, and the lower bracket, the upper bracket and the fire barrier are fixedly connected by bolts.

[0012] As an improvement: the heat sink is provided with a plurality of through holes matching the flange support plate, a plurality of heat dissipation slots are arranged in a circular array at the edge of the heat sink, and a spherical crown-shaped protrusion is provided at the center of the rain cap.

[0013] As an improvement: a supporting net is provided on the lower side of the rainproof cap, and the top end of the supporting rod passes through the supporting net and is sleeved with a flat washer.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The vertical integrated design of the device greatly reduces the occupied space and weight, and saves costs compared with the existing technical design;

[0016] 2. Through the setting of the suction valve disc assembly and the exhalation valve disc assembly, the tank pressure can be automatically adjusted when the tank pressure is too high or too low to prevent the tank from being damaged;

[0017] 3. A flame arrester is connected to the top of the valve body. Through the action of the flame arrester, high-temperature heat can be quickly dissipated to the external air, with good heat dissipation effect and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structural diagram of a fire-resistant and fire-resistant breathing valve is invented;

[0019] Figure 2 A schematic diagram of the cross-sectional structure of a fire-resistant and fire-resistant breathing valve is provided;

[0020] Figure 3 A schematic diagram of the three-dimensional structure of an exhalation valve disc assembly for inventing a fire-resistant and flame-retardant breathing valve;

[0021] Figure 4 A schematic diagram of the three-dimensional structure of an air intake valve disc assembly for inventing a burn-resistant and fire-resistant breathing valve;

[0022] Figure 5 A schematic diagram of the main structure of a flame arrester for inventing a fire-resistant and fire-resistant breathing valve;

[0023] Figure 6 A schematic diagram of the explosion structure of a flame arrester for inventing a burn-resistant flame-retardant breathing valve;

[0024] Figure 7 A schematic diagram of the three-dimensional structure of a fire grille for a fire-resistant and fire-resistant breathing valve is provided;

[0025] Figure 8 A schematic diagram of the three-dimensional structure of a flange support plate for inventing a fire-resistant and fire-resistant breathing valve;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of a heat dissipation plate for inventing a fire-resistant and flame-retardant breathing valve;

[0027] As shown in the figure:

[0028] 1. Heat sink; 2. Rain cap; 3. Support net; 4. Flange support plate; 5. Flat washer; 6. Support rod; 7. Fire barrier; 8. Valve body; 9. Fixing plate; 10. Guide cylinder; 11. Flange base; 12. Support column; 13. Valve stem; 14. Support cylinder; 15. Intake valve disc assembly; 16. Exhalation valve disc assembly; 1.1. Opening; 1.2. Heat dissipation notch; 1.3. Through hole; 4.1. Lower support Frame; 7.1, upper bracket; 8.1, flame arrester connecting flange; 15.1, suction valve disc; 15.2, nut washer; 15.3, suction clamp; 15.4, lower fixing nut; 16.1, exhalation valve disc; 16.2, fixing column; 16.3, lower spring seat; 16.4, guide sleeve; 16.5, spring; 16.6, upper spring seat; 16.7, upper fixing nut; 16.8, intake cylinder. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features and purpose effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both sides", "one side", "the other side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1 and Figure 2 As shown, a burn-resistant and fire-resistant breathing valve includes a valve body 8, a flame arrester connecting flange 8.1 is welded on the top of the outer wall of the valve body 8 for connecting a flame arrester, a flame arrester is installed on the flame arrester connecting flange 8.1, which can greatly weaken the flame, a fixing plate 9 is welded on the bottom wall of the valve body 8, a guide cylinder 10 is welded on the bottom wall of the fixing plate 9, a flange base 11 is welded on the bottom wall of the guide cylinder 10, which can support the device and be installed on the storage tank, a support cylinder 14 is welded on the upper wall of the fixing plate 9 located in the valve body 8, an exhalation valve disc assembly 16 is provided on the upper wall of the support cylinder 14, an inhalation valve disc assembly 15 is connected to the exhalation valve disc assembly 16, a support column 12 is welded on the inner wall of the guide cylinder 10, a valve stem 13 is fixedly passed through the middle of the support column 12.

[0033] like Figure 2 and Figure 3As shown, the exhalation valve disc assembly 16 includes an exhalation valve disc 16.1, a circular hole is opened in the center of the exhalation valve disc 16.1, a lower spring seat 16.3 is arranged in the center of the circular hole, a plurality of fixing columns 16.2 are evenly welded between the outer wall of the lower spring seat 16.3 and the side wall of the circular hole, a spring 16.5 is fixedly connected to the upper wall of the lower spring seat 16.3, an upper spring seat 16.6 is fixedly connected to the other end of the spring 16.5, a guide sleeve 16.4 is passed through the upper spring seat 16.6 and the lower spring seat 16.3 so as to slide up and down, an upper fixing nut 16.7 is threadedly connected to the top of the guide sleeve 16.4, the guide sleeve 16.4 is located on the central axis of the spring 16.5, and an air inlet cylinder 16.8 is fixed to the bottom wall of the exhalation valve disc 16.1 by a plurality of screws.

[0034] like Figure 2 and Figure 4 As shown, the suction valve disc assembly 15 includes a suction valve disc 15.1, a suction pressure plate 15.3 is fixed to the upper wall of the suction valve disc 15.1, the bottom end of the guide sleeve 16.4 passes through the suction pressure plate 15.3 and the suction valve disc 15.1 and is threadedly connected with a lower fixing nut 15.4, a nut washer 15.2 is provided between the lower fixing nut 15.4 and the suction valve disc 15.1, and the top end of the valve stem 13 extends into the guide sleeve 16.4 and slides up and down with the inner wall of the guide sleeve 16.4.

[0035] An exhalation sealing membrane is fixed to the bottom wall of the exhalation valve disc 16.1, which can ensure the sealing effect between the exhalation valve disc 16.1 and the support cylinder 14. An inhalation sealing membrane is fixed to the upper wall of the inhalation valve disc 15.1, which can ensure the sealing effect between the inhalation valve disc 15.1 and the air inlet cylinder 16.8.

[0036] like Figure 5 and Figure 6 As shown, the flame arrester includes a heat sink 1 and a rain cap 2, the rain cap 2 is made of acrylic material, the rain cap 2 can play a role in shielding rainwater on rainy days, a supporting net 3 is provided on the lower side of the rain cap 2, the supporting net 3 can play a role in supporting the waste generated by the combustion of the rain cap 2, a flange support plate 4 is welded to the bottom wall of the heat sink 1, a plurality of openings 1.1 are evenly opened on the heat sink 1, a fire barrier 7 is arranged in the opening 1.1, a plurality of support rods 6 are evenly welded on the upper wall of the heat sink 1, the top end of the support rod 6 passes through the supporting net 3 and is sleeved with a flat washer 5, and passes through the rain cap 2 and is fixed by a nut, and the arrangement of the plurality of support rods 6 can support the rain cap 2, which has a better stabilizing effect on the rain cap 2.

[0037] like Figures 6 to 8As shown, a lower bracket 4.1 is embedded in the flange support plate 4 at the position corresponding to the opening 1.1, an upper bracket 7.1 is provided at the top of the fire barrier 7, and the lower bracket 4.1, the upper bracket 7.1 and the fire barrier 7 are fixedly connected by bolts. Through the joint action of the upper bracket 7.1 and the lower bracket 4.1, the fire barrier 7 can be limited and fixed, thereby improving the stability of the fire barrier 7.

[0038] like Fig. 9 As shown, the heat sink 1 is provided with a plurality of through holes 1.3 corresponding to the connection ports of the flange support plate 4 for installation and fixing of bolts, so as to facilitate installation on the flame arrester connection flange 8.1.

[0039] like Fig. 9 As shown, a plurality of heat dissipation slots 1.2 are arranged in a circular array at the edge of the heat dissipation plate 1, which can increase the heat dissipation area and improve the heat dissipation effect.

[0040] like Figure 5 and Figure 6 As shown, a spherical crown-shaped protrusion is provided at the center of the rainproof cap 2 , and the flame from the fire barrier 7 below burns the spherical crown-shaped protrusion at the center of the rainproof cap 2 completely, and the remaining waste of the rainproof cap 2 falls onto the supporting net 3 .

[0041] During the specific implementation of the utility model, when the pressure in the storage tank is too high, the gas in the storage tank passes through the flange base 11 and the guide cylinder 10 into the support cylinder 14, and then the exhalation valve disc 16.1 is pushed up, and the gas passes through the gap between the exhalation valve disc 16.1 and the support cylinder 14 to the valve body 8, and then passes through the fire barrier 7 of the flame arrester and is discharged into the atmosphere, thereby achieving the effect of pressure relief; when the pressure in the storage tank is too low, negative pressure is generated in the flange base 11 and the guide cylinder 10, and under the action of atmospheric pressure, the suction valve disc 15.1 can be moved downward, so that a certain gap is generated between the suction valve disc 15.1 and the air inlet cylinder 16.8, and the suction valve disc 15.1 is in the air intake cylinder 16.8. 5.1 drives the guide sleeve 16.4 to move downward, so that the spring 16.5 is compressed, and the outside air passes through the flame arrester grid 7 to enter the valve body 8, and then passes through the circular hole of the exhalation valve disc 16.1 to enter the air inlet cylinder 16.8, and then passes through the gap between the suction valve disc 15.1 and the air inlet cylinder 16.8 to enter the support cylinder 14 and the guide cylinder 10, and finally enters the storage tank through the flange base 11, so as to replenish the pressure of the storage tank and prevent the storage tank from being damaged. After the storage tank restores to normal pressure, under the tension of the spring 16.5, the upper spring seat 16.6 can be pushed upward, driving the guide sleeve 16.4 to move upward, and the guide sleeve 16.4 drives the suction valve disc 15.1 to move upward and reset.

[0042] When deflagration occurs in the storage tank, the gas in the storage tank expands rapidly due to the heat. At this time, the exhalation valve disc 16.1 is pushed upward by the gas pressure, and the flame passes through the flange base 11, the guide cylinder 10 and the support cylinder 14, and then passes through the gap between the exhalation valve disc 16.1 and the support cylinder 14 to the valve body 8, and finally enters the flame arrester. When the flame reaches the flame arrester, it first passes through the lower bracket 4.1 on the flange support plate 4 and enters the fire barrier 7. Due to the wall effect, the fire barrier 7 can quickly and significantly weaken the flame. Part of the generated heat is dissipated through the fire barrier 7, and part is conducted to the heat sink 1. The heat sink 1 quickly dissipates the heat. Since the rain cap 2 is made of acrylic material, after being burned by the flame, the spherical crown-shaped protrusion is located at the flame concentration point, so it will melt quickly first, so that the high-temperature heat can be dissipated, thereby further improving the heat dissipation effect and preventing the occurrence of "backfire".

[0043] The contents not described in detail in this manual belong to the prior art known to professional and technical personnel in this field. Professional and technical personnel in this field can learn the installation method and working principle through common knowledge or reference materials, and will not be described in detail here.

[0044] The above shows and describes the basic principle and main features of the utility model and the 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 for explaining the principle of 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 fire-resistant and fire-resistant breathing valve, characterized in that: The valve body (8) comprises a valve body (8), the top of the outer wall of the valve body (8) is fixedly connected to a flame arrester connecting flange (8.1), a flame arrester is installed on the flame arrester connecting flange (8.1), the bottom wall of the valve body (8) is fixedly connected to a fixing plate (9), the bottom wall of the fixing plate (9) is fixedly connected to a guide cylinder (10), the bottom wall of the guide cylinder (10) is fixedly connected to a flange base (11), the upper wall of the fixing plate (9) located in the valve body (8) is fixedly connected to a support cylinder (14), the upper wall of the support cylinder (14) is provided with an exhalation valve disc assembly (16), the exhalation valve disc assembly (16) is connected to an inhalation valve disc assembly (15), the inner wall of the guide cylinder (10) is fixedly connected to a support column (12), and a valve stem (13) is fixedly passed through the middle of the support column (12).

2. The fire-resistant and fire-retardant breathing valve according to claim 1 is characterized in that: The exhalation valve disc assembly (16) comprises an exhalation valve disc (16.1), a circular hole is provided at the center of the exhalation valve disc (16.1), a lower spring seat (16.3) is provided at the center of the circular hole, a plurality of fixing columns (16.2) are evenly fixedly connected between the outer wall of the lower spring seat (16.3) and the side wall of the circular hole, a spring (16.5) is fixedly connected to the upper wall of the lower spring seat (16.3), the other end of the spring (16.5) is fixedly connected to the upper spring seat (16.6), a guide sleeve (16.4) slides up and down between the upper spring seat (16.6) and the lower spring seat (16.3), the top of the guide sleeve (16.4) is threadedly connected to an upper fixing nut (16.7), the guide sleeve (16.4) is located on the central axis of the spring (16.5), and the bottom wall of the exhalation valve disc (16.1) is fixedly connected to an air inlet cylinder (16.8).

3. The fire-resistant and fire-retardant breathing valve according to claim 2 is characterized in that: The suction valve disc assembly (15) comprises a suction valve disc (15.1), the bottom inner wall of the suction valve disc (15.1) is fixedly connected to a suction pressure plate (15.3), the bottom end of the guide sleeve (16.4) passes through the suction pressure plate (15.3) and the suction valve disc (15.1) and is threadedly connected to a lower fixing nut (15.4), a nut washer (15.2) is provided between the lower fixing nut (15.4) and the suction valve disc (15.1), and the top end of the valve stem (13) extends into the guide sleeve (16.4) and can slide up and down with the inner wall of the guide sleeve (16.4).

4. The fire-resistant and fire-retardant breathing valve according to claim 3 is characterized in that: An exhalation sealing membrane is fixedly connected to the bottom wall of the exhalation valve disc (16.1), and an inhalation sealing membrane is fixedly connected to the upper wall of the inhalation valve disc (15.1).

5. The fire-resistant and fire-retardant breathing valve according to claim 1 is characterized in that: The flame arrester comprises a heat sink (1) and a rain cap (2); the bottom wall of the heat sink (1) is fixedly connected to a flange support plate (4); a plurality of openings (1.1) are evenly provided on the heat sink (1); a fire arrester grid (7) is provided in each of the openings (1.1); a plurality of support rods (6) are evenly fixed to the upper wall of the heat sink (1); the top ends of the support rods (6) pass through the rain cap (2) and are fixed by nuts.

6. The fire-resistant and fire-retardant breathing valve according to claim 5 is characterized in that: A lower bracket (4.1) is embedded in the corresponding opening (1.1) on the flange support plate (4), an upper bracket (7.1) is provided on the top of the fire barrier (7), and the lower bracket (4.1), the upper bracket (7.1) and the fire barrier (7) are fixedly connected by bolts.

7. The fire-resistant and fire-retardant breathing valve according to claim 5 is characterized in that: The heat dissipation plate (1) is provided with a plurality of through holes (1.3) matching the flange support plate (4), a plurality of heat dissipation slots (1.2) are arranged in a circular array at the edge of the heat dissipation plate (1), and a spherical crown-shaped protrusion is provided at the center of the rainproof cap (2).

8. The fire-resistant and fire-retardant breathing valve according to claim 5 is characterized in that: A support net (3) is provided on the lower side of the rainproof cap (2), and the top end of the support rod (6) passes through the support net (3) and is sleeved with a flat washer (5).

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