阅读说明：本技术 燃气开关装置 (Gas switching device ) 是由 陈石明 于 2018-09-11 设计创作，主要内容包括：本发明提供一种燃气开关装置,其内部的燃气输送路径采L形设计。该燃气开关装置包含设置有一阀座、一由旋钮控制的一阀塞。该阀座采L形设计,使燃气的输入孔道与输出孔道呈相互垂直连接。该阀座设置有一内腔部,该内腔部设置在该输入孔道与该输出孔道的中间,以连通该输入孔道与该输出孔道。该内腔部的下端与该输入孔道连通,侧壁面与该输出孔道连通。凭借该阀塞的转动,能够令该穿孔对正或错开该输出孔道,而作燃气输出或封闭燃气输出路径的操作。该燃气开关装置更可设置超流量封闭装置,以及超流量复位装置,而能够保有因超流量而自动封闭流道的功能。(The invention provides a gas switch device, wherein a gas conveying path in the gas switch device adopts an L-shaped design. The gas switching device comprises a valve seat and a valve plug controlled by a knob. The valve seat adopts an L-shaped design, so that the input pore passage and the output pore passage of the fuel gas are mutually and vertically connected. The valve seat is provided with an inner cavity part which is arranged between the input pore passage and the output pore passage so as to communicate the input pore passage and the output pore passage. The lower end of the inner cavity part is communicated with the input pore canal, and the side wall surface is communicated with the output pore canal. By means of the rotation of the valve plug, the through hole can be aligned or staggered with the output pore passage, and the operation of gas output or gas output path closing can be performed. The gas switching device can be further provided with an over-flow closing device and an over-flow resetting device, so that the function of automatically closing the flow channel due to over-flow can be kept.)

1. A gas switching device, characterized by comprising:

a valve seat provided with an input duct, an output duct, and an inner chamber portion; the inner cavity part is arranged between the input pore passage and the output pore passage so as to communicate the input pore passage and the output pore passage; the lower end of the inner cavity part is communicated with the input pore canal; the side surface of the inner cavity part is communicated with the output pore canal; the input pore canal and the output pore canal are communicated in an L shape; the top end of the inner cavity part is in an opening shape;

and the number of the first and second groups,

a valve plug controlled by a knob and inserted into the inner cavity part from the opening at the upper end of the valve seat in a matching manner so as to block the communication state between the input pore passage and the output pore passage; the center of the valve plug is provided with a recess with an opening bottom, and the side wall surface of the recess is provided with a through hole; the through hole can be aligned to the output pore channel by means of the rotation of the valve plug, so that the fuel gas is output; or the through hole is staggered with the output pore passage to close the gas output path.

2. The gas switching device according to claim 1, wherein: also comprises an over-flow sealing device; the overflow sealing device is arranged in the input pore passage and comprises an annular copper seat, an umbrella cap, a bracket and a compression-resistant spring; the annular copper seat is fixed in the input pore passage; the bracket is fixed in the copper seat and is used as a bracket of the umbrella cap; the pressure-resistant spring can endow the umbrella cap with restoring force; when the overflow occurs, the umbrella cap can seal the through hole of the annular copper seat, so that the top end of the umbrella cap protrudes out of the through hole of the annular copper seat.

3. The gas switching device according to claim 2, wherein: the overflow valve also comprises an overflow resetting device which is arranged between the valve plug and the overflow sealing device; the over-flow resetting device comprises a fixing ring and a deflector rod; the fixing ring is fixed in the input pore passage; the fixing ring is provided with an insertion hole for allowing a convex pin at the lower end of the driving lever to be inserted; the upper end of the deflector rod is inserted into a concave hole preset at the lower end of the valve plug; the valve plug can drive the shifting rod seat to rotate, so that the shifting rod can shift the umbrella cap which seals the annular copper seat through hole, and the umbrella cap returns to the original position.

Technical Field

The invention relates to a gas switching device, wherein a gas conveying path of the gas switching device extends in an L shape and can be used in places where gas pipelines need to be bent and connected at right angles.

Background

Both domestic gas and industrial gas are delivered to the user end by the delivery pipe. The user only needs to open the gas switch, can ignite and use, and is very convenient. Fig. 1 and 2 show a gas switch 10 sold in a workshop, in which an inlet port 11 and an outlet port 12 extend linearly, and a valve plug 13 having a transverse bore 131 is provided in the middle to close or open a gas supply path. When the gas outlet pipe 16 must be connected vertically in an L-shape, an elbow joint 14 must be connected, and then the gas switch 10 is installed, as shown in fig. 3. Thus, the work flow of installing the gas switch 10 is increased, and the components are also increased.

When the hose 17 connected to one end of the gas switch 10 is broken or dropped, a large amount of gas may overflow, which may cause fire or carbon monoxide poisoning. Therefore, an overflow blocking device 15 may be installed in the gas delivery duct of the gas switch 10, and the gas delivery duct may be blocked at a proper time when the gas flow rate is abnormally large, as shown in fig. 2. When the state of the closed delivery path of the over-flow rate sealing device 15 is to be released, the valve plug 13 is rotated, the valve plug 13 pushes the top end 152 of the umbrella cap 151, so that the umbrella cap 151 is retracted, the gas flows, the pressures at the two ends of the umbrella cap 151 are balanced, and the umbrella cap 151 is restored by the restoring force of the pressure-resistant spring 153, and the gas delivery path is not blocked.

Disclosure of Invention

The present invention is directed to a gas switching device, in which a fuel conveying path is designed in an L-shape, and the fuel conveying path can be directly installed according to the requirement of right-angle bending in an installation place, so as to simplify the installation process and reduce the number of piping parts.

The invention provides a gas switching device which can be provided with an over-flow sealing device and an over-flow resetting device and can maintain the function of automatically sealing a flow passage due to over-flow.

The invention provides a gas switching device, which is characterized by comprising:

a valve seat provided with an input duct, an output duct, and an inner chamber portion; the inner cavity part is arranged between the input pore passage and the output pore passage so as to communicate the input pore passage and the output pore passage; the lower end of the inner cavity part is communicated with the input pore canal; the side surface of the inner cavity part is communicated with the output pore canal; the input pore canal and the output pore canal are communicated in an L shape; the top end of the inner cavity part is in an opening shape; and the number of the first and second groups,

a valve plug controlled by a knob and inserted into the inner cavity part from the opening at the upper end of the valve seat in a matching manner so as to block the communication state between the input pore passage and the output pore passage; the center of the valve plug is provided with a recess with an opening bottom, and the side wall surface of the recess is provided with a through hole; the through hole can be aligned to the output pore channel by means of the rotation of the valve plug, so that the fuel gas is output; or the through hole is staggered with the output pore passage to close the gas output path.

The gas switching device also comprises an over-flow sealing device; the overflow sealing device is arranged in the input pore passage and comprises an annular copper seat, an umbrella cap, a bracket and a compression-resistant spring; the annular copper seat is fixed in the input pore passage; the bracket is fixed in the copper seat and is used as a bracket of the umbrella cap; the pressure-resistant spring can endow the umbrella cap with restoring force; when the overflow occurs, the umbrella cap can seal the through hole of the annular copper seat, so that the top end of the umbrella cap protrudes out of the through hole of the annular copper seat.

The gas switching device also comprises an over-flow resetting device which is arranged between the valve plug and the over-flow closing device; the over-flow resetting device comprises a fixing ring and a deflector rod; the fixing ring is fixed in the input pore passage; the fixing ring is provided with an insertion hole for allowing a convex pin at the lower end of the driving lever to be inserted; the upper end of the deflector rod is inserted into a concave hole preset at the lower end of the valve plug; the valve plug can drive the shifting rod seat to rotate, so that the shifting rod can shift the umbrella cap which seals the annular copper seat through hole, and the umbrella cap returns to the original position.

In conclusion, the gas switching device provided by the invention has an L-shaped gas conveying path, and can be applied to a vertical conveying pipeline to simplify the installation process. In addition, the invention is additionally provided with an over-flow resetting device to relieve the closed state of the over-flow closing device and improve the safety of the gas switch. In practice, the existing overheating sealing device can be additionally arranged, so that the safety of the invention is further improved.

Drawings

Fig. 1 is an external view of a conventional gas switch.

Fig. 2 is a cross-sectional view of the prior art shown in fig. 1.

Fig. 3 is a state diagram of the prior art shown in fig. 1.

FIG. 4 is an external view of an embodiment of the present invention

Fig. 5 is an exploded view of the embodiment shown in fig. 4.

Fig. 6 is a cross-sectional view of the embodiment shown in fig. 4.

Fig. 7 is an enlarged view of a-a section of fig. 6.

Fig. 8 is a state diagram of the embodiment shown in fig. 4 in use.

Fig. 9 is a state diagram of the super flow rate sealing device closing the flow passage.

FIG. 10 is a diagram showing the state of the cap after the plug drives the lever.

Description of reference numerals: 10-gas switch; 11-an input duct; 12-an output duct; 13-a valve plug; 14-an elbow joint; 15-an over-flow closure device; 151-umbrella cap; a tip; 153-compression springs; 16-a gas output pipe; 17-a hose; 20-a valve seat; 21-an input duct; 22-an output duct; 23-an inner cavity part; 30-a valve plug; 31-a knob; 32-a latch; 33-convex shaft; 331-card slot; 34-a horizontal channel; 35-a spring; 36-a recess; 361-piercing; 37-concave holes; 40-an over-flow closure device; 41-umbrella cap; 411-top; 42-ring-shaped copper seat; 43-a scaffold; 44-compression springs; 50-over-flow reset device; 51-a fixed ring; 511-pin hole; 52-a deflector rod; 521-a boss pin; 60-overheat sealing device.

Detailed Description

Please refer to fig. 4-7. The gas switching device disclosed by the invention comprises a valve seat 20 and a valve plug 30 controlled by a knob 31. The internal flow passage of the valve seat 20 is designed in an L shape, so that the input duct 21 and the output duct 22 of the fuel gas are vertically communicated with each other. The gas switching device can be directly connected to the gas outlet pipe 16 in a vertical connection state. As shown in fig. 8.

The valve seat 20 is provided with an inlet port 21, an outlet port 22, and an inner chamber portion 23. The inner cavity portion 23 is disposed between the input duct 21 and the output duct 22 to communicate the input duct 21 and the output duct 22. The lower end of the inner cavity portion 23 is communicated with the input duct 21, and the upper end is open. The side surface of the inner chamber portion 23 communicates with the outlet port 22. The input duct 21 and the output duct 22 are in L-shaped communication.

A plug 32 is inserted through the engaging groove 331 of the protruding shaft 33 at the top end of the valve plug 30 and the two horizontal grooves 34 at the top end of the valve seat 30. The knob 31 can drive the plug 32 to rotate, so as to control the valve plug to rotate by 90 degrees. The spring 35 is capable of generating a compressive force on the plug 30. The connection between the knob 31 and the plug 30 is of conventional construction and is not the technical feature claimed in the present invention, and will not be described in further detail.

The valve plug 30 can be inserted into the inner cavity portion 23 of the valve seat 20 from the opening at the upper end of the valve seat 20 in a matching manner to block the communication state between the input port 21 and the output port 22. The valve plug 30 has a recess 36 with an open bottom at the center, and a through hole 361 is formed on the side wall of the recess 36. The plug 30 is rotated so that the aperture 361 is aligned with the outlet port 22. Gas can be fed into the outlet port 22 through the inlet port 21, the recess 36, and the through hole 361 and out of the valve seat 20. The plug 30 is rotated to stagger the through hole 361 and the output port 22. The valve plug 30 closes the gas output path.

The present invention also includes providing an over-flow closure device 40. The overflow sealing device is arranged in the input duct 21 and comprises an annular copper seat 42, an umbrella cap 41, a bracket 43 and a compression spring 44. The annular copper seat 42 is fixed within the inlet port 21. The bracket 43 is fixed in the annular copper seat 42 and serves as a support for the umbrella cap 41. The pressure-resistant spring 44 can give a restoring force to the umbrella cap 41. When an over-flow occurs, the umbrella cap 41 closes the through hole 421 of the annular copper seat 42, so that the top end 411 of the umbrella cap 41 protrudes out of the through hole of the annular copper seat 42, as shown in fig. 9. The overflow shutoff device 40 is conventional, but when deployed in the present invention, the rotation of the valve plug 30 cannot directly toggle the umbrella cap 41 to return to its original position. The excess flow closure device 40 cannot be directly utilized within the present invention. Therefore, the present invention must be additionally provided with an over-flow resetting means 50.

The over-flow reset device 50 is disposed between the valve plug 30 and the over-flow closure device 40. The over-flow resetting device 50 includes a fixing ring 51 and a lever 52. The retainer ring 51 is fixed in the inlet port 21. The fixing ring 51 is provided with an insertion hole 511 for allowing the insertion of the projection pin 521 at the lower end of the lever 52. The shift lever 52 can rotate around the protruding pin 521. The upper end of the driving lever 52 is inserted into a predetermined recess 37 formed at the lower end of the valve plug 30. Please refer to fig. 10. During the 90 ° rotation of the valve plug 30, the driver 52 is driven to rotate by 45 ° around the protruding pin 521, so that the driver 52 can drive the umbrella cap 51 that has closed the through hole 521 of the annular copper seat 52, and the umbrella cap 51 is retracted.

In conclusion, the gas switching device provided by the invention has an L-shaped gas conveying path, and can be applied to a vertical conveying pipeline to simplify the installation process. In addition, the present invention adds the over-flow resetting device 50 to release the closing state of the over-flow closing device 40, so that the safety of the gas switch is improved. In practice, the conventional excess heat sealing device 60 may be added to further enhance the safety of the present invention.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.