CN215981000U

CN215981000U - Gas regulator with overvoltage protection function

Info

Publication number: CN215981000U
Application number: CN202121533123.3U
Authority: CN
Inventors: 林德峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2022-03-08
Anticipated expiration: 2031-07-07

Abstract

The utility model relates to a gas regulator with an overvoltage protection function, which comprises a conveying channel for gas to flow through, a plug part, a first elastic element, an elastic sealing piece and a switching piece. The plug part can be movably arranged in the conveying channel, and a gap for gas to flow through is formed between the plug part and the conveying channel. The first elastic element is connected to the plug and tends to cause the latter to block the end opening of the delivery channel, thereby blocking the gas flow. The gas can push against the elastic sealing sheet to deform the elastic sealing sheet. The switching piece is arranged on the elastic sealing sheet and moves along with the deformation of the elastic sealing sheet. Under the normal state, the switching piece is abutted against the plug piece to enable the plug piece to be spaced from the end opening of the conveying channel, so that gas can flow through. When the gas pressure is too high, the elastic sealing piece is pushed to deform, the switching piece moves and retreats, and the plug piece can block the end opening of the conveying channel.

Description

Gas regulator with overvoltage protection function

Technical Field

The utility model relates to a gas regulator for a gas tank, in particular to a gas regulator with an overvoltage protection function.

Background

Referring to fig. 10, fig. 10 is a side sectional view of a gas regulator in the prior art. Gas enters the regulating chamber 92 through the inlet 91. In the adjusting chamber 92, the pressure of the gas pushes against the elastic sealing piece 93 to deform it and pushes against the spring 94, and finally the pressure of the gas and the elastic force of the spring 94 reach dynamic balance. The elastic sealing piece 93 is provided with a moving member 95, and the moving member 95 moves along with the deformation of the elastic sealing piece 93. At different gas pressures, the position of the moving member 95 is different because the position of the elastic sealing piece 93 is different when the force balance is achieved. A shift lever 96 is pivoted in the adjusting cavity 92, one end of the shift lever 96 is connected with the moving member 95, and the other end is connected with a plug 97. When the pressure of the gas changes to move the moving member 95, the moving member 95 will pull the lever 96, and the lever 96 will move the plug 97 to open the gaps with different sizes for the gas to pass through to the outlet 98. By means of the structure, the gas regulator can open the opening with proper size under different gas pressures, so that the gas in the gas barrel can be stably circulated.

However, after long-term use, the gas regulator in the prior art may fail to stabilize the pressure due to elastic fatigue of the spring 94 or breakage of the elastic sealing piece 93, so that the high-pressure gas in the gas barrel is directly ejected; thus, the gas is ejected with too much force and too fast, which makes the flame too big and too far away from the nozzle, not only difficult to use but also dangerous.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages and drawbacks of the prior art, the present invention provides a gas regulator with an over-pressure protection function, which can directly block the flow of gas after the pressure stabilizing function fails, thereby avoiding danger.

In order to achieve the above object, the present invention provides a gas regulator with an overvoltage protection function, which comprises:

a base body, which is provided with a gas inlet and a gas outlet, and a conveying channel and a first chamber are formed inside the base body; the gas inlet is communicated with the first chamber and the gas outlet through the conveying channel; the gas can enter the base body from the gas inlet;

a blocking mechanism including

The plug piece is movably arranged in the conveying channel of the seat body; a gap for the gas to flow through is formed between the plug piece and the inner wall surface of the conveying channel;

a first elastic element connected to the plug and tending to move the plug to block an end opening of the delivery passage, thereby blocking the gas inlet and the gas outlet;

a second elastic element connected to the elastic sealing sheet and tending to reduce the volume of the blocking chamber;

an elastic sealing sheet which has elasticity and can deform; a blocking cavity is formed between the elastic sealing sheet and the seat body and communicated with the first cavity; the gas can push the elastic sealing sheet to increase the volume of the blocking chamber;

a switching member connected to the elastic sealing piece and moving relative to the plug member as the elastic sealing piece deforms; the switching piece can abut against the plug piece so that the plug piece is spaced from the end opening of the conveying channel; when the gas pushes the elastic sealing piece, the switching piece moves to enable the plug piece to be moved by the first elastic element to block the end opening of the conveying channel;

and the adjusting mechanism is arranged in the first cavity and can adjust the pressure of the gas.

When the gas outlet is used, the plug piece is abutted by the switching piece and is spaced from the end opening of the conveying channel under the normal state, and gas can pass through the gap between the plug piece and the conveying channel and can flow to the gas outlet and the first chamber through the end opening. When the gas pressure is too big or the adjustment mechanism in the first cavity is invalid, because block the cavity and communicate in first cavity, the gas can be pushed away by blocking the cavity and support the elasticity mounting and make its deformation, borrow this to drive the relative plug member of switching piece and remove to make the plug member can be moved by first elastic element and block up transfer passage's end opening, and then block the gas of too big pressure, consequently can avoid danger.

Further, the gas regulator with the overpressure protection function is characterized in that the switching piece is provided with an abutting inclined surface, and the switching piece abuts against the plug piece through the abutting inclined surface; when the gas pushes against the elastic sealing piece, the switching piece moves relative to the plug piece, the first elastic element enables the plug piece to slide relative to the abutting inclined plane, and the plug piece moves towards the end opening of the conveying channel.

Furthermore, the gas regulator with the overvoltage protection function, wherein the plug part is provided with a jack, and the switching part is arranged in the jack in a penetrating manner.

Further, the gas regulator with the overpressure protection function comprises a cylinder, wherein a gap for gas to flow through is formed between the outer annular surface of the cylinder and the inner wall surface of the conveying channel; and the abutting parts are arranged on the outer ring surface of the cylinder at intervals in a surrounding way and abut against the inner wall surface of the conveying channel.

Further, the gas regulator with the overpressure protection function, wherein the switching piece enables the interval between the plug piece and the end opening of the conveying channel to be larger than 1 mm.

Further, the gas regulator with overpressure protection function, wherein the switching piece enables the plug piece to be spaced 1.7 mm from the end opening of the conveying channel.

Further, the gas regulator with the overpressure protection function, wherein a second chamber is formed inside the seat body, and the gas inlet is communicated with the second chamber and communicated with the conveying channel through the second chamber.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the adjusting mechanism and the blocking mechanism of the present invention.

Fig. 3 is an exploded view of the adjustment mechanism and blocking mechanism of the present invention.

Fig. 4 is a sectional view taken along line a-a in fig. 1.

Fig. 5 is a sectional view taken along line B-B in fig. 1.

Fig. 6 and 7 are schematic diagrams illustrating the operation of the elastic sealing sheet and the switching member according to the present invention.

Fig. 8 and 9 are schematic views showing the operation of the plug of the present invention.

Fig. 10 is a schematic sectional view of a gas regulator according to the prior art.

Detailed Description

The technical means adopted by the utility model to achieve the predetermined purpose of the utility model will be further described below with reference to the drawings and preferred embodiments of the utility model.

Referring to fig. 1, fig. 2, fig. 4 and fig. 5, the gas regulator with overvoltage protection function of the present invention includes a base 10, a blocking mechanism 20 and an adjusting mechanism 30.

The housing 10 has a gas inlet 11 and a gas outlet 12, and is formed with a conveying passage 13 and a first chamber 14 therein. The gas inlet 11 communicates with the first chamber 14 and the gas outlet 12 via the transfer passage 13. Gas can enter the base 10 through the gas inlet 11 and flow to the first chamber 14 and the gas outlet 12 through the conveying channel 13. In addition, in the embodiment, a second chamber 15 is formed inside the seat 10, and the gas inlet 11 is connected to the second chamber 15 and is connected to the conveying channel 13 through the second chamber 15. In other words, the gas inlet 11, the second chamber 15, the conveying channel 13, the first chamber 14 and the gas outlet 12 are communicated in sequence; the first chamber 14 is connected to the wall of the communication channel between the conveying channel 13 and the gas outlet 12, and the communication port between the gas inlet 11 and the second chamber 15 and the communication port between the second chamber 15 and the conveying channel 13 are not shown in the figure. That is, the seat body 10 is of a dual chamber type in the present embodiment, and the pressure of the gas can be adjusted by two chambers; but not limited thereto, the housing 10 may have no second chamber 15.

Referring to fig. 2 and 3, the blocking mechanism 20 includes a plug 21, a first elastic element 22, an elastic sealing piece 23, a switching piece 24 and a second elastic element 25.

The stopper 21 is movably provided in the conveyance channel 13 of the housing 10. A gap G through which gas can flow is formed between the plug 21 and the inner wall surface of the transfer passage 13. Specifically, the stopper 21 in the present embodiment includes a cylinder 211, a plurality of abutting portions 212, and a receptacle 213. A gap G through which gas flows is formed between the outer circumferential surface of the column 211 and the inner wall surface of the conveyance passage 13. The abutting portions 212 are disposed around the outer circumferential surface of the column 211 at intervals and abut against the inner wall surface of the conveying channel 13, so that the abutting portions 212 can support the column 211 to be centered in the conveying channel 13, thereby forming a gap G for gas to flow through. The insertion hole 213 is formed on the cylinder 211.

The first elastic element 22 is connected to the plug 21 and tends to move the plug 21 to block one end opening 131 of the delivery channel 13, thereby blocking the gas inlet 11 and the gas outlet 12. Specifically, the first elastic element 22 is a spring in this embodiment, one end of which abuts against a step face in the conveyance channel 13 and the other end of which abuts against one end of the stopper 21, and pushes the stopper 21 toward the end opening 131 of the conveyance channel 13.

The elastic seal 23 is elastic and deformable, and may be specifically a rubber film or the like. A blocking chamber 231 is formed between the elastic sealing sheet 23 and the base 10, and the blocking chamber 231 is communicated with the first chamber 14. The gas pushes against the elastic sealing piece 23 to increase the volume of the blocking chamber 231. Specifically, since the blocking chamber 231 is communicated with the first chamber 14, the pressure of the gas in the blocking chamber 231 is equal to that in the first chamber 14; therefore, when the pressure of the gas is greater than the elastic force of the elastic sealing piece 23, the gas pushes the elastic sealing piece 23 from the blocking chamber 231 to deform the elastic sealing piece and increase the volume of the blocking chamber 231.

The switching member 24 is connected to the elastic sealing piece 23 and moves relative to the plug member 21 as the elastic sealing piece 23 is deformed. The switch 24 can abut against the plug 21 to space the plug 21 from the end opening 131 of the delivery channel 13. When the gas pushes against the elastic sealing piece 23, the switching piece 24 moves to enable the plug piece 21 to be moved by the first elastic element 22 to block the end opening 131 of the conveying channel 13. Specifically, in the present embodiment, the switching member 24 has an abutting inclined surface 241, and the switching member 24 abuts against the stopper 21 with the abutting inclined surface 241. When the gas pushes against the elastic sealing piece 23, the switch piece 24 moves relative to the plug piece 21, the first elastic element 22 slides the plug piece 21 relative to the abutment slope 241 and moves the plug piece 21 towards the end opening 131 of the delivery channel 13. In addition, in the present embodiment, the switching member 24 is inserted into the insertion hole 213 of the plug member 21 and abuts against the inner wall surface of the insertion hole 213; but in other embodiments it may be against the end of the plug 21 that is opposite the end opening 131 of the delivery channel 13, and the plug 21 may be without the receptacle 213. The switch 24 can space the plug 21 from the end opening 131 of the delivery channel 13 by more than 1 mm, and specifically in this embodiment the switch 24 can space the plug 21 from the end opening 131 of the delivery channel 13 by 1.7 mm.

The second elastic element 25 is connected to the elastic flap 23 and tends to reduce the volume of the blocking chamber 231. Specifically, in the present embodiment, the second elastic element 25 is a spring, which abuts against one side of the elastic sealing piece 23 opposite to the blocking chamber 231 and pushes the elastic sealing piece 23 towards the blocking chamber 231. In other words, the pressure of the gas must be greater than the elastic force of the second elastic element 25 plus the elastic force of the elastic sealing piece 23, so as to compress the second elastic element 25 and deform the elastic sealing piece 23.

The adjusting mechanism 30 is disposed in the first chamber 14 and can adjust the pressure of the gas. Specifically, in the present embodiment, the adjusting mechanism 30 includes an adjusting elastic sealing piece 31, a moving piece 32, a shift lever 33 and an adjusting plug 34, which operate in the same manner as the prior art, so as to adjust the pressure of the gas. However, in other embodiments, the structure and operation of the adjusting mechanism 30 are not limited to the above, and may be any structure capable of adjusting the pressure of the gas.

Referring to fig. 6, 7, 8 and 9, the operation of the blocking mechanism 20 will be described.

In general, as shown in fig. 6 and 8, when the gas pressure is within the set range, the switching member 24 is pressed against the plug member 21 by the elastic force of the second elastic element 25 and the elastic force of the elastic sealing piece 23, and the plug member 21 is spaced from the end opening 131 of the delivery channel 13 by the abutting inclined surface 241, so that the gas can enter from the gas inlet 11, pass through the gap G between the delivery channel 13 and the plug member 21, and flow to the gas outlet 12 and the first chamber 14 through the end opening 131. Since the first chamber 14 communicates with the blocking chamber 231, the gas pressure in the first chamber 14 is the same as that in the blocking chamber 231.

When the pressure of the gas is too high or the adjusting mechanism 30 fails, as shown in fig. 7 and 9, the gas pushes the elastic sealing piece 23 and the second elastic element 25 from the blocking chamber 231, so that the elastic sealing piece 23 deforms to increase the volume of the blocking chamber 231. At this time, the switching member 24 is moved by the elastic sealing piece 23 relative to the stopper 21, and the first elastic element 22 continuously pushes against the stopper 21, so that the stopper 21 is maintained to abut against the abutting inclined surface 241 of the switching member 24 and slides relative to the abutting inclined surface 241 to move toward the end opening 131 of the conveying channel 13. When the elastic sealing piece 23 deforms to a certain extent (i.e. when the pressure of the gas is greater than a certain extent), the switching piece 24 is moved enough to make the plug piece 21 pushed by the first elastic element 22 to block the end opening 131, and finally the gas is blocked from flowing through.

However, the specific structure and operation of the blocking mechanism 20 are not limited to the above, and the switching member 24 may not abut against the inclined surface 241, so that the switching member 24 may be only a latch blocking member 21, so that it cannot move.

The advantage of the utility model is that in the normal state, the plug 21 is abutted by the switch 24 spaced from the end opening 131 of the delivery channel 13, at which time gas can pass through the gap G between the plug 21 and the delivery channel 13 and can flow via the end opening 131 to the gas outlet 12 and the first chamber 14. When the gas pressure is too high or the adjusting mechanism 30 in the first chamber 14 fails, since the blocking chamber 231 is communicated with the first chamber 14, the gas can push the elastic sealing piece 23 to deform from the blocking chamber 231, thereby driving the switching piece 24 to move relative to the plug piece 21, and move to the position where the plug piece 21 can be moved by the first elastic element 22 to block the end opening 131 of the conveying channel 13, so as to block the gas with too high pressure, thereby avoiding danger.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A gas regulator with overvoltage protection function is characterized by comprising

a blocking mechanism, comprising:

2. The gas regulator with overpressure protection function as claimed in claim 1, wherein the switch member has an abutting inclined surface, the switch member abuts against the plug member with the abutting inclined surface; when the gas pushes against the elastic sealing piece, the switching piece moves relative to the plug piece, the first elastic element enables the plug piece to slide relative to the abutting inclined plane, and the plug piece moves towards the end opening of the conveying channel.

3. The gas regulator with overvoltage protection function as claimed in claim 1 or 2, wherein the plug member has a plug hole, and the switching member is inserted into the plug hole.

4. A gas regulator with overpressure protection as claimed in claim 1 or 2, wherein the plug member comprises:

a cylinder, a gap for gas to flow is formed between the outer ring surface of the cylinder and the inner wall surface of the conveying channel;

and the abutting parts are arranged on the outer ring surface of the cylinder at intervals in a surrounding way and abut against the inner wall surface of the conveying channel.

5. The gas regulator with overpressure protection function as claimed in claim 1 or 2, wherein the switching member enables the plug member to be spaced from the end opening of the delivery passage by more than 1 mm.

6. The gas regulator with overpressure protection as claimed in claim 5, wherein the switch member enables the plug member to be spaced 1.7 mm from the end opening of the delivery passage.

7. The gas regulator according to claim 1 or 2, wherein a second chamber is formed inside the seat body, and the gas inlet is connected to the second chamber and is connected to the conveying channel via the second chamber.