TWI822343B - Gas valve self-closing device tightening structure - Google Patents

Abstract

A tightening structure of a gas valve self-closing device, which includes a valve body with a lateral pipe, and the lateral pipe has an inner set of holes; a connecting sleeve with an inner blocking ring and an outer coupling section, and the inner blocking ring extends radially inward An inner sleeve hole and an inner tapered hole are formed inside the connecting sleeve to separate the inner sleeve hole, and the outer joint section is tightly coupled to the inner group hole, and the inner sleeve hole faces the valve body; and a self-closing group includes a valve shaft, a spring, and a leak-proof ring. One end of the valve shaft has an outer flange. The valve shaft passes through the inner flange so that the outer flange is located in the inner sleeve hole. The anti-leak ring is assembled on the valve shaft and is located between the outer flange and the inner flange. The two ends of the spring push It contacts the inner end of the inner hole and the outer baffle, and the outer baffle is forced to push the anti-leakage ring and force it against the inner baffle ring into a closed state. The outer joint section is forced to assemble by the tight fit of the outer joint section entering the inner block hole. Forced tensioning of the inner holes forms a better sealing combination.

Description

Gas valve self-closing device tightening structure

The present invention relates to the technical field of gas valve equipment, and in particular to a gas valve self-closing device pressing structure.

In view of the endless fire accidents caused by gas leakage or explosion, relevant industries have provided a new patent such as "Self-closing Identification Structure of Container Valve" in Announcement No. M588773. The structure of the first embodiment of this conventional patent is as follows: ~As shown in Figure 5, it is included in a tubular valve body and has a container interface at both axial ends, a rotary switch, and a lateral nozzle extending radially and connected to the container interface. The lateral nozzle is at The internal assembly is provided with a stop sleeve, a valve shaft and a spring; the stop sleeve has an outer end hole, an inner end hole, an inner flange and an external thread section that is screwed into the lateral nozzle. The inner flange It has an inner guide hole connecting the outer end hole and an inner end hole, and the inner end hole faces the inner end of the lateral connecting pipe; the valve shaft sleeve is assembled with a leak-proof ring and has an outer baffle and a ventilation section at both ends. groove, the valve shaft passes through the inner guide hole so that the outer retaining edge and the leak-proof ring are located in the inner end hole, and the leak-proof ring abuts between the outer retaining edge and the inner retaining edge; the spring is in the inner end hole And the two ends are against the inner end of the lateral nozzle and the valve shaft, so that the outer flange and the leak-proof ring of the valve shaft are against the inner flange and cover the inner guide hole to form a normal closure to prevent gas leakage.

Since the stop sleeve (number 24 in the figure) is threaded with an external thread segment (number 24 in the figure) on the internal thread of the lateral nozzle (number 13 in the figure), in practice, the industry will further install the stop sleeve (number 24 in the figure) Leak-proof glue is applied between the external thread section (number 24 in the figure) and the internal thread of the lateral nozzle (number 13 in the figure) to further prevent gas from leaking between the internal and external threads.

However, since gas-related equipment is generally used in high-temperature environments, the applied anti-leakage glue will deteriorate due to the influence of high-temperature environments and lose its anti-leakage effect, resulting in the shortcoming that it is still unable to prevent gas leakage.

The invention is a gas valve self-closing device pressing structure, which includes:

The valve body has a container interface and a lateral pipe, and the lateral pipe has an inner set of holes connected to the container interface;

The connecting sleeve has a hollow structure and has an outer coupling section and an inner blocking ring provided on the inner wall. The inner blocking ring extends radially inward from the inner wall to separate the interior of the connecting sleeve to form an inner sleeve hole and an inner tapered hole. The coupling section is fixed to the inner hole with a tight fit. The inner cone hole has an inner cone surface and defines a cone hole mandrel, and the angle θ between the inner cone surface and the cone hole mandrel is 30 to 40 degrees;

And the self-closing group includes a valve shaft, a spring and a leak-proof ring. One end of the valve shaft has a convex outer flange. The valve shaft passes through the inner flange and the outer flange is located in the inner sleeve hole. The anti-leak ring is assembled on the valve shaft and is against one side of the outer baffle. The spring is located in the inner sleeve hole and its two ends are against the inner hole end of the inner assembly hole and the other side of the outer baffle. The edge is forced to push the anti-leakage ring against the edge of the inner baffle ring to form an anti-leakage closed state.

Through the mutual cooperation of the above structures, the present invention uses a tight fit and forced connection between the outer combining section and the inner assembly hole of the connecting sleeve; when the outer combining section enters the tight fitting assembly process of the inner assembly hole, The outer joint section is forced to stretch the inner group hole to form better sealing and strong joint effect, which effectively improves the safety and progress of use, thereby achieving the purpose and effectiveness of the present invention.

Please refer to Figures 1 to 10. The tightening structure of a gas valve self-closing device according to the present invention includes:

The valve body 10 has a container interface 11 and a lateral pipe 12. The lateral pipe 12 has an inner set of holes 13 connected to the container interface 11.

The connecting sleeve 20 has a hollow structure and has an outer connecting section 22 and an inner blocking ring 21 provided on the inner wall. The inner blocking ring 21 extends radially inward from the inner wall to separate the interior of the connecting sleeve 20 to form an inner sleeve hole 23 . , inner tapered hole 24, the outer connecting section 22 is tightly connected to the inner hole 13 (as shown in the fifth and sixth figures), the inner tapered hole 24 has an inner tapered surface 241 and defines a tapered hole center axis 242, and the angle θ between the inner tapered surface 241 and the tapered hole mandrel 242 is 30 to 40 degrees.

And the self-closing group 30 includes a valve shaft 31, a spring 32 and a leak-proof ring 33. One end of the valve shaft 31 has a convex outer baffle 311, and the valve shaft 31 passes through the inner baffle 21 and the outer baffle. 311 is located in the inner sleeve hole 23, the anti-leak ring 33 is assembled with the valve shaft 31 and abuts against one side of the outer flange 311, the spring 32 is located in the inner sleeve hole 23, and its two ends are pressed against the inner assembly The inner end of the hole 13 is on the other side of the outer baffle 311. The outer baffle 311 is forced to push the leak-proof ring 33 against the inner baffle ring 21 to form a leak-proof closed state.

The foregoing are the main technical features of the main embodiment of the present invention, which correspond to the content of the first item of the patent scope of this case, so that the purpose and implementation mode of the present invention can be known in detail, while the other technical features described in the appended patent scope are for The detailed description or additional technical features of the first item of the patent application scope are not used to limit the scope of the first item of the patent application scope. It should be noted that the first item of the patent application scope in this case does not necessarily include the description of the patent scope of other subsidiary applications. technical characteristics.

Continuing with the above content, the actual usage situation and the achieved effects of the present invention are further described in detail. As shown in Figures 1 to 7, in the figure, the metal material used in the valve body 10 is malleable, and the connecting sleeve 20 is When the outer combination section 22 and the inner hole 13 are combined with a tight fit, the inner hole 13 can be stretched. Therefore, as shown in the fifth figure, when the outer joint section 22 of the present invention enters the inner assembly hole 13 of the valve body 10 along the arrow in the figure and is tightly assembled, the inner assembly is caused by the ductility of the metal of the valve body 10 itself. The hole 13 can be stretched by the outer coupling section 22 to form better sealing and a strong coupling effect, as shown in the sixth figure.

Compared with the above-mentioned conventional patents that use internal and external thread screw sets and apply anti-leakage glue for screw fastening, there will be disadvantages of gas leakage due to the deterioration of the anti-leakage glue due to the influence of high-temperature environments; the present invention uses an external combination The section 22 and the inner group hole 13 are fixed with a tight fit, which can not only effectively achieve the leakage prevention effect but also save the cost of internal and external thread processing, and is indeed progressive.

The features of each component of the present invention will be further described in detail below. As shown in Figures 1 to 10, the inner assembly hole 13 has an internal thread section 134 close to the hole and an internal annular groove 135 connecting the internal thread section 134. , the inner annular groove 135 is assembled with an anti-leakage ring 14 , the anti-leakage ring 14 partially protrudes outside the inner annular groove 135 and abuts against the open end of the inner tapered hole 24 of the connecting sleeve 20 . Therefore, as shown in Figures 8 to 10, the container interface 11 of the valve body 10 of the present invention is provided to be connected to a gas cylinder (not shown), and the lateral pipe 12 is connected to the inner hole 13 of the container interface 11 with internal threads. The section 134 is locked and connected with a joint 41 that provides the external output pipeline 40 , and the front end of the joint 41 has an external thread and an external cone surface 411 corresponding to the inner cone hole 24 . Therefore, when the joint 41 of the output pipeline 40 is threaded relative to the internal thread section 134 of the lateral nozzle 12 and enters the inner cone hole 24 in the direction of the arrow in Figure 9, the outer cone surface 411 of the front end of the joint 41 is first forced against the leakage ring. 14 to form a leak-proof barrier; then, as shown in Figure 10, the joint 41 spirally moves to push the valve shaft 31 to move inward, so that the outer baffle edge 311 is separated from the inner baffle ring edge 21, so that the gas gas connected to the container interface 11 The cylinder is connected to the output pipeline 40 for gas supply. In this way, through the anti-leak ring 14 provided in the inner assembly hole 13, the joint 41 of the output pipeline 40 entering the lateral nozzle 12 of the valve body 10 will first form a leak-proof barrier against the anti-leak ring 14, thereby further improving the use efficiency. security.

Secondly, the inner hole 13 includes a ventilation section 131, a leak-proof section 132 and a forced connection section 133 connected to the container interface 11. The leak-proof section 132 is connected between the ventilation section 131 and the forced connection section 133, and the forced connection section Section 133 tightly fits the outer coupling section 22 . Moreover, the connecting sleeve 20 has an airtight section 26 connected to the outer combining section 22 and corresponding to the leakage-proof section 132, and a second anti-leakage ring 27 that sets the airtight section 26, and the second anti-leakage ring 27 Press against the leakage-proof section 132 . Therefore, the second leak-proof ring 27 is forcedly assembled between the leak-proof section 132 and the air-tight section 26 to further improve the leak-proof effect of the connecting sleeve 20 assembled in the inner assembly hole 13 .

Furthermore, the inner baffle ring 21 has an inner guide hole 211 connecting the inner sleeve hole 23 and the inner tapered hole 24, and the valve shaft 31 passes through the inner guide hole 211; therefore, the valve shaft 31 is locked into the outside. When the joint 41 of the output pipeline 40 is pushed and moved, the valve shaft 31 is guided by the inner guide hole 211 to achieve a smooth sliding effect.

Finally, the valve shaft 31 has a ventilation slot 312 , and the ventilation slot 312 is located at an end of the valve shaft 31 extending out of the inner tapered hole 24 . Therefore, the ventilation slot 312 enables the valve shaft 31 to enlarge the air guide space in the open position and effectively increase the ventilation volume.

10: Valve body 11: Container interface 12: Lateral takeover 13:Inner hole 131: Ventilation section 132: Leak-proof section 133: forced connection section 134: Internal thread section 135:Inner ring groove 14: Stop leakage ring 20:Connecting sleeve 21: Inner retaining ring edge 211:Inner guide hole 22: Outer binding section 23:Inner sleeve hole 24:Inner tapered hole 241:Inner cone surface 242: Taper hole mandrel 26: Airtight section 27:Second anti-leak ring 30: Autistic group 31:Valve shaft 311:Outer retaining edge 312: Ventilation slot 32:Spring 33: Anti-leak ring 40: External output pipeline 41:Connector 411:Outer cone surface

The first figure is a three-dimensional exploded schematic diagram of the present invention. The second figure is a schematic three-dimensional view of the self-closing assembly of the present invention assembled in a connecting sleeve. The third figure is a schematic three-dimensional view of the connecting sleeve of the present invention. The fourth figure is a schematic cross-sectional view of line segment IV-IV in the third figure. The fifth figure is a partial cross-sectional schematic diagram of the forced joint section and the outer joint section before being assembled together according to the present invention. The sixth figure is a partial cross-sectional schematic diagram of the tight-fitting assembly of the forced joint section and the outer joint section of the present invention. The seventh figure is a schematic plan view of the tight-fitting assembly of the forced joint section and the outer joint section of the present invention. The eighth figure is a schematic plan view of the use state of the present invention. Figure 9 is a schematic cross-sectional view of the lateral nozzle of the valve body of the present invention, which provides a joint for the output pipeline to be locked and abutted against the anti-leak ring to form a leak-proof barrier. Figure 10 is a schematic cross-sectional view of the valve body of the present invention in which the lateral connecting tube of the valve body provides the joint of the output pipeline to be locked and the valve shaft is pushed.

10: Valve body

11: Container interface

12: Lateral takeover

13:Inner hole

131: Ventilation section

132: Leak-proof section

133: forced connection section

134: Internal thread section

135:Inner ring groove

14: Stop leakage ring

20:Connecting sleeve

21: Inner retaining ring edge

211:Inner guide hole

22: Outer binding section

23:Inner sleeve hole

24:Inner tapered hole

241:Inner cone surface

26: Airtight section

27:Second anti-leak ring

30: Autistic group

31:Valve shaft

311:Outer retaining edge

312: Ventilation slot

32:Spring

33: Anti-leak ring

Claims (5)

A gas valve self-closing device tightening structure, including: a valve body, which has a container interface and a lateral pipe, and the lateral pipe has an inner set of holes connected to the container interface; the connecting sleeve is a hollow structure and has an outer coupling section And an inner baffle ring is provided on the inner wall. The inner baffle ring extends radially inward from the inner wall to separate the interior of the connecting sleeve to form an inner sleeve hole and an inner tapered hole. The outer coupling section is tightly coupled to the inner assembly. The hole is fixed, the inner tapered hole has an inner tapered surface and defines a tapered hole spindle, and the angle θ between the inner tapered surface and the tapered hole spindle is 30 to 40 degrees; and the self-closing group includes a valve shaft, a spring and a The anti-leak ring has a convex outer flange at one end of the valve shaft. The valve shaft passes through the inner flange and the outer flange is located in the inner sleeve hole. The anti-leak ring is assembled with the valve shaft and adheres to it. Against one side of the outer flange, the spring is located in the inner sleeve hole and its two ends bear against the inner hole end of the inner assembly hole and the other side of the outer flange. The outer flange is forced to push the anti-leak ring. The ring is forced against the inner blocking ring edge to form a leak-proof closed state; wherein the inner hole has an internal thread segment close to the orifice and an inner annular groove connected to the internal thread segment, and the inner annular groove is assembled with a leak-proof ring , the anti-leak ring portion protrudes outside the inner ring groove and abuts against the open end of the inner tapered hole of the connecting sleeve. The gas valve self-closing device tightening structure as described in claim 1, wherein the inner hole includes a ventilation section, a leak-proof section and a forced connection section connected to the container interface, and the leak-proof section is connected to the ventilation section and the forced connection section. between the segments, and the forced connection segment closely fits the outer joint segment. The gas valve self-closing device tightening structure as described in claim 2, wherein the connecting sleeve has an airtight section connected to the outer joint section and corresponding to the leakage-proof section, and a second anti-leakage section of the airtight section. ring, and the second leak-proof ring is pressed against the leak-proof section. The gas valve self-closing device tightening structure as claimed in claim 1, wherein the inner baffle ring has an inner guide hole connecting the inner sleeve hole and the inner tapered hole, and the valve shaft passes through the inner guide hole. The gas valve self-closing device tightening structure as claimed in claim 1, wherein the valve shaft has a ventilation slot, and the ventilation slot is located at an end of the valve shaft extending out of the inner tapered hole.

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