CN215673767U

CN215673767U - Active structure backfire valve

Info

Publication number: CN215673767U
Application number: CN202122154844.XU
Authority: CN
Inventors: 周如伟
Original assignee: Huzhou Beide Fluid Equipment Co ltd
Current assignee: Huzhou Beide Fluid Equipment Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-28
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses an active structure tempering valve, which comprises a valve body, wherein a fire retardant element is arranged inside the valve body, a one-way valve core, a valve core spring, a mounting seat, a thimble seat and a bearing seat are sequentially arranged inside the valve body from an air inlet to an air outlet, two ends of the valve core spring are respectively connected with the one-way valve core and the mounting seat, and the one-way valve core is arranged at the air inlet; the bearing seat is arranged at the air outlet, an air outlet groove is arranged on the end wall of one end of the bearing seat close to the air outlet, the air outlet groove completely covers the air outlet, a thimble groove is arranged at the other end of the bearing seat, and a central through hole and an air outlet through hole which are communicated with the thimble groove are arranged on the bottom wall of the air outlet groove; one end of the thimble seat close to the air outlet is provided with a thimble part, the thimble part is sleeved with an inflammable sleeve, and the thimble part and the inflammable sleeve are inserted into the central through hole; the utility model can block continuous tempering, and prevents the problem that the temperature of the fire retardant element is continuously increased due to the continuous tempering, thereby losing the fire retardant function.

Description

Active structure backfire valve

Technical Field

The utility model relates to the field of a tempering valve, in particular to an active structure tempering valve.

Background

In a pipeline for transporting a flammable gas, if the flammable gas is ignited, a gas flame is spread throughout the entire piping network, causing a serious safety accident and economic loss, and thus it is necessary to install a flame arrester or a back fire valve on the pipeline for transporting the flammable gas. The inside back-fire relief component that is provided with of spark arrester, the last a lot of tiny passageways that is provided with of back-fire relief component, when flame got into inside the spark arrester, will become a plurality of tiny flames after a lot of tiny passageways through the back-fire relief component, flame temperature drops to below the ignition point to lose the condition of continuing the burning. However, when continued tempering occurs, the temperature of the fire retardant element also continues to rise, and the fire retardant function will be lost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an active structure backfire valve, aiming at solving the problem that a flame arrester loses a flame arresting function when continuous backfire occurs.

The utility model is realized by the following steps: an active structure tempering valve comprises a valve body, wherein one end of the valve body is provided with an air inlet, the other end of the valve body is provided with an air outlet, a fire retardant element is arranged inside the valve body, a one-way valve core, a valve core spring, a mounting seat, a thimble seat and a bearing seat are sequentially arranged inside the valve body from the air inlet to the air outlet, two ends of the valve core spring are respectively connected with the one-way valve core and the mounting seat, and the one-way valve core is arranged at the air inlet; a guide groove is formed in one end, close to the air outlet, of the mounting seat, the thimble seat is arranged in the guide groove, and a thimble spring is arranged between the bottom wall of the guide groove and the thimble seat; the bearing seat is arranged at the air outlet, an air outlet groove is formed in the end wall of one end, close to the air outlet, of the bearing seat, the air outlet groove completely covers the air outlet, a thimble groove is formed in the other end of the bearing seat, and a central through hole and an air outlet through hole which are communicated with the thimble groove are formed in the bottom wall of the air outlet groove; the one end that the thimble seat is close to the gas outlet is provided with thimble portion, the cover is provided with easily fires the cover in thimble portion, thimble portion is inserted with easily fires the cover and is located central through-hole, the thimble seat is close to the one end of gas outlet and inserts in the thimble groove, the thimble seat is under easily firing the effect of blockking of cover, and its one end that is close to the gas outlet can not contact with the tank bottom wall in thimble groove, gets rid of easily fires the cover after, the one end that the thimble seat is close to the gas outlet is compressed tightly on the tank bottom wall in thimble groove under thimble spring's effect to plug up the through-hole of giving vent to anger.

Furthermore, one end of the one-way valve core is inserted into the air inlet, an air inlet groove is formed in the end of the one-way valve core, and a plurality of air inlet through holes are formed in the groove side wall of the air inlet groove; the check valve is characterized in that a blocking ring part is arranged on the outer wall of the check valve core, one end, close to the air inlet, of the valve core spring is sleeved on the check valve core and tightly pressed on the blocking ring part, and a sealing ring is arranged between the blocking ring part and the inner wall of the valve body at the air inlet.

Furthermore, a spring placing groove is formed in one end, close to the air inlet, of the ejector pin seat, and the ejector pin spring is arranged in the spring placing groove.

Further, thimble portion is cylindrical, easily fire the cover and be cylindricly, easily fire the one end opening setting of cover, the other end seals the setting, easily fire the open end of cover and be provided with fender circle portion, keep off circle portion and can not be by passing through in the central through-hole.

Further, the inflammable sheath is made of plastic or rubber material.

Further, the valve body includes air inlet valve body and air outlet valve body, the air inlet sets up on air inlet valve body, the gas outlet sets up on air outlet valve body, be provided with the external screw thread structure on the outer wall that air inlet valve body and air outlet valve body are connected, be provided with the internal thread structure on the inner wall that air outlet valve body and air inlet valve body are connected, air inlet valve body and air outlet valve body screw thread link to each other, and the junction is provided with the sealing washer.

Compared with the prior art, the utility model has the beneficial effects that: the utility model can block continuous tempering, and prevents the problem that the temperature of the fire retardant element is continuously increased due to the continuous tempering, thereby losing the fire retardant function. Therefore, the present invention can also perform normal fire extinguishing when sustained backfire occurs.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of an active backfire valve according to the present invention;

FIG. 2 is a schematic structural view of a check valve core of an active structure backfire valve according to the present invention;

FIG. 3 is a schematic structural view of a thimble seat of an active structure backfire valve of the present invention;

FIG. 4 is a schematic view of a retainer of an active-type backfire valve according to the present invention;

FIG. 5 is a schematic view of a combustible jacket of an active structure flashback valve of the present invention.

In the figure: 1. a valve body; 2. an air inlet; 3. an air outlet; 4. a fire retardant element; 5. a one-way valve core; 501. an air inlet groove; 502. an air inlet through hole; 503. a retaining ring part; 6. a spool spring; 7. a mounting seat; 8. a thimble seat; 801. a thimble portion; 802. a spring placing groove; 9. a bearing seat; 901. an air outlet groove; 902. a thimble groove; 903. a central through hole; 904. an air outlet through hole; 10. a thimble spring; 11. a combustible jacket; 1101. and a stop ring part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, an active structure tempering valve includes a valve body 1, the valve body 1 includes an air inlet valve body and an air outlet valve body, an external thread structure is disposed on an outer wall of the air inlet valve body connected to the air outlet valve body, an internal thread structure is disposed on an inner wall of the air outlet valve body connected to the air inlet valve body, the air inlet valve body and the air outlet valve body are connected by a thread, and a sealing ring is disposed at a connection position of the air inlet valve body and the air outlet valve body to prevent air leakage. The one end that the valve body of admitting air kept away from the valve body of giving vent to anger is provided with air inlet 2, and the one end that the valve body of giving vent to anger kept away from the valve body of admitting air is provided with gas outlet 3.

Referring to fig. 1 and 2, a fire retardant element 4 is arranged inside a valve body 1, and a one-way valve core 5, a valve core spring 6, a mounting seat 7, a thimble seat 8 and a bearing seat 9 are sequentially arranged inside the valve body 1 from an air inlet 2 to an air outlet 3. The one-way valve core 5 is arranged at the air inlet 2, one end of the one-way valve core 5 is inserted into the air inlet 2, an air inlet groove 501 is arranged at the end, and a plurality of air inlet through holes 502 are arranged on the groove side wall of the air inlet groove 501. A blocking ring part 503 is arranged on the outer wall of the one-way valve core 5, one end of the valve core spring 6, which is close to the air inlet 2, is sleeved on the one-way valve core 5 and is tightly pressed on the blocking ring part 503, and a sealing ring is arranged between the blocking ring part 503 and the inner wall of the valve body 1 at the air inlet 2. The mounting seat 7 is provided with a lug structure at one end close to the air inlet 2, and the lug structure of the mounting seat 7 is sleeved with one end of the valve core spring 6 close to the air outlet 3.

Referring to fig. 1 and 3, a guide groove is formed at one end of the mounting seat 7 close to the air outlet 3, the thimble seat 8 is disposed in the guide groove, a spring placing groove 802 is formed at one end of the thimble seat 8 close to the air inlet 2, and the thimble spring 10 is disposed in the spring placing groove 802. The spring placing groove 802 is provided with a thimble spring 10, one end of the thimble spring 10 is connected with the groove bottom wall of the spring placing groove 802, and the other end is connected with the groove bottom wall of the guide groove.

Referring to fig. 1, 3, 4 and 5, the seat 9 is disposed at the air outlet 3, an air outlet groove 901 is disposed on an end wall of one end of the seat 9 close to the air outlet 3, the air outlet groove 901 completely covers the air outlet 3, an thimble groove 902 is disposed at the other end of the seat 9, and a central through hole 903 and an air outlet through hole 904 leading to the thimble groove 902 are disposed on a groove bottom wall of the air outlet groove 901. One end of the thimble seat 8 close to the air outlet 3 is provided with a thimble portion 801, the thimble portion 801 is cylindrical, the thimble portion 801 is sleeved with a flammable sleeve 11, and the flammable sleeve 11 is made of plastic or rubber materials. The inflammable sleeve 11 is cylindrical, one end of the inflammable sleeve 11 is open, and the other end is closed. The thimble portion 801 and the combustible jacket 11 are inserted into the central through hole 903, and the open end of the combustible jacket 11 is provided with a retainer portion 1101, the retainer portion 1101 not being able to pass through the central through hole 903. The end of the thimble seat 8 close to the gas outlet 3 is inserted into the thimble groove 902, and the end of the thimble seat 8 close to the gas outlet 3 cannot contact with the bottom wall of the thimble groove 902 under the blocking action of the retainer portion 1101 of the combustible jacket 11.

The working principle of the utility model is as follows: when a tempering accident occurs, the tempering enters the air outlet groove 901 of the bearing seat 9 from the air outlet 3 and enters the valve body 1 through the air outlet through hole 904. After the backfire enters the air outlet groove 901, the inflammable sleeve 11 can be ignited, and after the inflammable sleeve 11 burns, the inflammable sleeve loses the blocking effect on the thimble seat 8, at the moment, one end of the thimble seat 8, which is close to the air outlet 3, is pressed on the bottom wall of the thimble groove 902 under the effect of the thimble spring 10, and the air outlet through hole 904 is blocked, so that the backfire is blocked, and the backfire is prevented from continuously entering the valve body 1. While the flash back that has entered the valve body 1 is extinguished by the action of the flame retardant element 4.

Therefore, the utility model can block the continuous tempering, and prevent the problem that the temperature of the fire retardant element is continuously increased due to the continuous tempering, thereby losing the fire retardant function. When continuous tempering occurs, the utility model can also carry out normal fire extinguishing.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An active structure tempering valve comprises a valve body (1), wherein one end of the valve body (1) is provided with an air inlet (2), the other end of the valve body is provided with an air outlet (3), and a fire retardant element (4) is arranged inside the valve body (1), and the active structure tempering valve is characterized in that a one-way valve core (5), a valve core spring (6), an installation seat (7), a thimble seat (8) and a bearing seat (9) are sequentially arranged inside the valve body (1) from the air inlet (2) to the air outlet (3), two ends of the valve core spring (6) are respectively connected with the one-way valve core (5) and the installation seat (7), and the one-way valve core (5) is arranged at the air inlet (2); a guide groove is formed in one end, close to the air outlet (3), of the mounting seat (7), the thimble seat (8) is arranged in the guide groove, and a thimble spring (10) is arranged between the groove bottom wall of the guide groove and the thimble seat (8); the air outlet device is characterized in that the bearing seat (9) is arranged at the air outlet (3), an air outlet groove (901) is formed in the end wall of one end, close to the air outlet (3), of the bearing seat (9), the air outlet groove (901) completely covers the air outlet (3), a thimble groove (902) is formed in the other end of the bearing seat (9), and a central through hole (903) and an air outlet through hole (904) leading to the thimble groove (902) are formed in the bottom wall of the air outlet groove (901); one end that thimble seat (8) are close to gas outlet (3) is provided with thimble portion (801), thimble portion (801) are gone up the cover and are provided with easily fires cover (11), thimble portion (801) and easily fire cover (11) are inserted and are located central through hole (903), thimble seat (8) are close to the one end of gas outlet (3) and are inserted in thimble groove (902), thimble seat (8) are under the effect of blockking of easily firing cover (11), and its one end that is close to gas outlet (3) can not contact with the tank bottom wall in thimble groove (902), get rid of easily fires cover (11) back, thimble seat (8) are close to the one end of gas outlet (3) and are compressed tightly on the tank bottom wall in thimble groove (902) under the effect of thimble spring (10) to block up outlet vent hole (904).

2. The active structure backfire valve according to claim 1, wherein one end of said check valve core (5) is inserted into the gas inlet (2), and said one end is provided with a gas inlet groove (501), and the groove sidewall of said gas inlet groove (501) is provided with a plurality of gas inlet through holes (502); the check valve is characterized in that a blocking ring part (503) is arranged on the outer wall of the check valve core (5), one end, close to the air inlet (2), of the valve core spring (6) is sleeved on the check valve core (5) and tightly pressed on the blocking ring part (503), and a sealing ring is arranged between the blocking ring part (503) and the inner wall of the valve body (1) at the air inlet (2).

3. The active structure flashback valve according to claim 1, wherein an end of the needle base (8) near the gas inlet (2) is provided with a spring placement groove (802), and the needle spring (10) is disposed in the spring placement groove (802).

4. The active structure backfire valve according to claim 1, wherein said thimble portion (801) is cylindrical, said inflammable sheath (11) is cylindrical, one end of said inflammable sheath (11) is open, the other end is closed, said opening end of said inflammable sheath (11) is provided with a retaining ring portion (1101), said retaining ring portion (1101) cannot pass through the central through hole (903).

5. An active structural flashback valve as set forth in claim 4 wherein the flammable jacket (11) is made of a plastic or rubber material.

6. The active structure backfire valve according to any of claims 1-5, wherein the valve body (1) comprises an air inlet valve body and an air outlet valve body, the air inlet (2) is arranged on the air inlet valve body, the air outlet (3) is arranged on the air outlet valve body, an external thread structure is arranged on the outer wall of the air inlet valve body connected with the air outlet valve body, an internal thread structure is arranged on the inner wall of the air outlet valve body connected with the air inlet valve body, the air inlet valve body is connected with the air outlet valve body in a threaded manner, and a sealing ring is arranged at the joint of the air inlet valve body and the air outlet valve body.