CN214197436U - Large-discharge fireproof breather valve - Google Patents
Large-discharge fireproof breather valve Download PDFInfo
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- CN214197436U CN214197436U CN202120011819.3U CN202120011819U CN214197436U CN 214197436 U CN214197436 U CN 214197436U CN 202120011819 U CN202120011819 U CN 202120011819U CN 214197436 U CN214197436 U CN 214197436U
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Abstract
The utility model relates to a large discharge fireproof breather valve, which comprises a valve body and a valve cover, wherein the valve body is provided with an inlet flange and a breathing port, a first valve seat, a second valve seat, a first valve clack and a second valve clack are arranged in a valve cavity between the breathing port and the inlet flange to form a breathing valve and a suction valve, a fireproof device and a rainproof cover are arranged on the breathing port, and the fireproof device is formed by fixedly installing fireproof sheets in a fireproof seat; the method is characterized in that: cushioning springs are respectively arranged between the upper plane of the first valve clack and the inner cavity of the valve body and between the upper plane of the second valve clack and the inner wall of the valve cover; the fire-proof sheet adopts a disc structure formed by overlapping a plurality of V-shaped stainless steel plates, a V-shaped flow channel is arranged between every two adjacent V-shaped stainless steel plates, the inner wall of the fire-proof seat is provided with a conical flow channel, and the small-diameter end of the conical flow channel is welded with the breathing port of the valve body. The air-conditioning system has the characteristics of reliable sealing performance, good fireproof performance, large ventilation flow and the like.
Description
Technical Field
The utility model belongs to the valve field especially relates to a breather valve. The utility model is suitable for a fire prevention breather valve of flammable, explosive, large-traffic pressure vessel such as oil storage tank, tank wagon.
Background
The breather valve is widely applied to the pressure container, keeps the pressure balance of the pressure container when the medium is input or discharged, and protects the safety of container equipment. In particular to containers for flammable and explosive media such as oil storage tanks, oil tank trucks and the like, a fire prevention device is generally arranged at a passage opening of a valve body in order to prevent an external fire source from being sucked into the containers, so that the external fire source is prevented from being sucked into the oil storage tanks through the valve body to cause fire accidents. The structure of present fire prevention breather valve generally adopts and exhales valve and suction valve in the valve body setting, and valve body import flange mounting is in the oil storage tank container upper end, and fire prevention ware and rain-proof cover are installed to the valve body mouth of breathing, and its main shortcoming is: in the transportation process of the product, the valve clacks of the exhalation valve and the inhalation valve repeatedly collide with the valve seat due to transportation vibration, so that the sealing surfaces of the valve clacks and the valve seat are damaged, and the sealing performance is influenced; the fire prevention ware adopts metal fire prevention piece fixed mounting to breathe in the fire prevention seat of mouthful at the valve body, and for the convenience of the installation of fire prevention piece, the fire prevention seat generally sets up rectangular mouth of breathing, and its respiratory flow is little, has restricted filling and unloading the flow of oil storage tank medium.
Disclosure of Invention
The utility model discloses shortcoming to prior art exists provides a valve clack has shock attenuation, bradyseism, reduces valve clack and disk seat collision, and the fire prevention seat adopts the full circulation structure, and sealing performance is reliable, fire behavior is good, breathe the big discharge capacity fire prevention breather valve that the flow of taking a breath is big.
The technical scheme of the utility model comprises a valve body and a valve cover, wherein the valve body is provided with an inlet flange and a breathing port, a first valve seat and a second valve seat as well as a first valve clack and a second valve clack are arranged in a valve cavity between the breathing port and the inlet flange, a fire preventer and a rain cover are arranged on the breathing port, and the fire preventer is formed by fixedly installing a fire-proof piece in a fire-proof seat; the center of the first valve clack is arranged in a guide hole of the guide frame through the guide of a first guide rod, the center of the second valve clack is arranged at the upper end of the second valve seat, and the center of the second valve clack is arranged in a guide hole at the lower end surface of the valve cover through the guide of a second guide rod; the method is characterized in that: cushioning springs are respectively arranged between the upper plane of the first valve clack and the inner cavity of the valve body and between the upper plane of the second valve clack and the inner wall of the valve cover; a breathing cavity communicated with a breathing port is arranged between the outlet of the first valve seat and the inlet of the second valve seat, and an annular flow passage communicated with the inlet passage of the second valve seat and the inlet passage of the valve body is arranged on the outer wall of the breathing cavity; the fire-proof sheet adopts a disc structure formed by overlapping a plurality of V-shaped stainless steel plates, a V-shaped flow channel is arranged between every two adjacent V-shaped stainless steel plates, the inner wall of the fire-proof seat is provided with a conical flow channel, and the small-diameter end of the conical flow channel is welded with the breathing port of the valve body.
In above technical scheme, the fire prevention seat has the circular installation cavity of installation fire prevention piece, and cavity wall department in the circular installation cavity is equipped with annular step, is equipped with radial installation muscle in the annular step.
In the technical scheme, the two end faces of the fireproof sheet are respectively provided with the star-shaped pressing plates and are fixedly arranged on the screw holes of the radial mounting ribs by screws.
Compared with the prior art, the utility model beneficial effect be: the valve clack is provided with a shock absorption device, so that the collision between the valve clack and the sealing surface of the valve seat in the transportation process is reduced; the fireproof sheet adopts a disc structure formed by overlapping V-shaped stainless steel plates, so that the fireproof effect is improved; the fire-proof seat flow passage adopts a full-circulation structure. The air-conditioning system has the characteristics of reliable sealing performance, good fireproof performance, large ventilation flow and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The valve comprises a valve body 1, a first valve seat 2, a first valve clack 3, a breathing cavity 4, a second valve seat 5, a second valve clack 6, a valve cover 7, a spring 8, a second guide rod 9, a radial mounting rib 10, a fireproof seat 11, a fireproof sheet 12, a rainproof cover 13, a guide frame 14 and a first guide rod 15.
Detailed Description
The large-discharge-capacity fireproof breather valve shown in the figure 1 comprises a valve body 1 and a valve cover 7, wherein the valve body 1 is provided with an inlet flange and a breathing port, the inlet flange is arranged at the upper end of an oil storage tank and is used for communicating the inner cavity of the valve body 1 with the inner cavity of the oil storage tank, a first valve seat 2, a second valve seat 5, a first valve clack 3 and a second valve clack 6 are arranged in a valve cavity between the breathing port and the inlet flange, a fireproof device and a rainproof cover 13 are arranged on the breathing port and are used for preventing rainwater from entering the inner cavity of the valve body 1, and the fireproof device is formed by fixedly installing a fireproof sheet 12 in a fireproof seat 11; the first valve clack 3 is positioned at the upper end of the first valve seat 2, the center of the first valve clack is guided and installed in a guide hole of a guide frame 14 through a first guide rod 15, the first valve clack 3 is pushed to move axially along the first guide rod 15 by positive pressure, the second valve clack 6 is positioned at the upper end of the second valve seat 5, the center of the second valve clack is guided and installed in a guide hole in the lower end face of the valve cover 7 through a second guide rod 9, and the second valve clack 6 is sucked by negative pressure to move axially along the second guide rod 9; the method is characterized in that: cushioning springs 8 are respectively arranged between the upper plane of the first valve clack 3 and the inner cavity of the valve body 1 and between the upper plane of the second valve clack 6 and the inner wall of the valve cover 7, so that the collision between the first valve clack 3 and the first valve seat 2 and between the second valve clack 6 and the second valve seat 5 in the transportation process are reduced, and the springs 8 can be uniformly distributed in the inner circumferential direction of the horizontal planes of the first valve clack 3 and the second valve clack 6; a breathing cavity 4 communicated with a breathing port is arranged between the outlet of the first valve seat 2 and the inlet of the second valve seat 5, and an annular flow passage communicated with the inlet passage of the second valve seat 5 and the valve body 1 is arranged on the outer wall of the breathing cavity 4; the fire prevention piece 12 adopts a plurality of V-arrangement stainless steel plates to add and constitutes the disc structure, the V-arrangement runner has between the adjacent V-arrangement stainless steel plate, receive two extinguishes after cooling when the V-arrangement runner between the adjacent V-arrangement stainless steel plate of outside burning things which may cause a fire disaster, 11 inner walls of fire prevention seat have conical runner, conical runner's minor diameter end and 1 respiratory opening welded connection of valve body, fire prevention piece 12 is installed at the big diameter end of conical runner, make the effective working face of fire prevention piece 12 be greater than the flow channel cross-section of 1 respiratory opening of valve body, improve the oil discharge or the oiling flow of trading gas flow and oil storage tank.
Fire prevention seat 11 has the circular installation cavity of installation fire prevention piece 12, cavity wall department is equipped with annular step in the circular installation cavity, annular step inner ring wall is equipped with radial installation muscle 10, fire prevention piece 12 fixed mounting is on circular installation cavity inner ring wall and radial installation muscle 10, the quantity of radial installation muscle 10 is confirmed according to the diameter of breathing the mouth, annular step hole constitutes respiratory channel, constitute the full circulation structure, the flow of taking a breath is big, the oil charging and the oil discharge flow of oil storage tank have been improved.
The two end faces of the fireproof sheet 12 are respectively provided with a star-shaped pressing plate which is fixedly arranged on the screw holes of the radial mounting ribs 10 by screws. The star-shaped pressing plate is formed by uniformly arranging a plurality of radial pressing strips in the circumferential direction of the outer ring surface of the annular pressing ring, the annular pressing ring is provided with a central hole, and a screw penetrates through the central hole to integrally and fixedly install the fireproof sheet 12 and the annular pressing ring in a circular installation cavity of the fireproof seat 11.
Claims (3)
1. A large-discharge-capacity fireproof breather valve comprises a valve body (1) and a valve cover (7), wherein the valve body (1) is provided with an inlet flange and a breathing opening, a first valve seat (2), a second valve seat (5), a first valve clack (3) and a second valve clack (6) are arranged in a valve cavity between the breathing opening and the inlet flange, a fireproof device and a rainproof cover (13) are arranged on the breathing opening, and the fireproof device is formed by fixedly installing a fireproof sheet (12) in a fireproof seat (11); the first valve clack (3) is positioned at the upper end of the first valve seat (2), the center of the first valve clack is guided and installed in a guide hole of a guide frame (14) through a first guide rod (15), the second valve clack (6) is positioned at the upper end of the second valve seat (5), and the center of the second valve clack is guided and installed in a guide hole of the lower end surface of the valve cover (7) through a second guide rod (9); the method is characterized in that: a cushioning spring (8) is respectively arranged between the upper plane of the first valve clack (3) and the inner cavity of the valve body (1) and between the upper plane of the second valve clack (6) and the inner wall of the valve cover (7); a breathing cavity (4) communicated with the breathing port is arranged between the outlet of the first valve seat (2) and the inlet of the second valve seat (5), and an annular flow passage communicated with the inlet passage of the second valve seat (5) and the valve body (1) is arranged on the outer wall of the breathing cavity (4); the fire-proof piece (12) adopts a plurality of V-arrangement stainless steel plates to superpose and constitutes the disc structure, has the V-arrangement runner between the adjacent V-arrangement stainless steel plate, and fire-proof seat (11) inner wall has conical runner, and conical runner's small diameter end and valve body (1) breathe mouth welded connection, and the fire-proof piece (12) are installed at conical runner large diameter end.
2. The high volume fire resistant breather valve according to claim 1, wherein: the fire-proof seat (11) is provided with a circular installation cavity for installing the fire-proof sheet (12), the inner cavity wall of the circular installation cavity is provided with an annular step, the inner annular wall of the annular step is provided with a radial installation rib (10), and the fire-proof sheet (12) is fixedly installed on the inner cavity wall of the circular installation cavity and the radial installation rib (10).
3. The large discharge fireproof breather valve of claim 1 or 2, wherein: the two end faces of the fireproof sheet (12) are respectively provided with a star-shaped pressing plate and are fixedly arranged on screw holes of the radial mounting ribs (10) by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120011819.3U CN214197436U (en) | 2021-01-05 | 2021-01-05 | Large-discharge fireproof breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120011819.3U CN214197436U (en) | 2021-01-05 | 2021-01-05 | Large-discharge fireproof breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214197436U true CN214197436U (en) | 2021-09-14 |
Family
ID=77633254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120011819.3U Active CN214197436U (en) | 2021-01-05 | 2021-01-05 | Large-discharge fireproof breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214197436U (en) |
-
2021
- 2021-01-05 CN CN202120011819.3U patent/CN214197436U/en active Active
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