CN213954985U - Non-repeated filling gas cylinder valve - Google Patents
Non-repeated filling gas cylinder valve Download PDFInfo
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- CN213954985U CN213954985U CN202022643622.XU CN202022643622U CN213954985U CN 213954985 U CN213954985 U CN 213954985U CN 202022643622 U CN202022643622 U CN 202022643622U CN 213954985 U CN213954985 U CN 213954985U
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Abstract
The utility model provides a non-repeated charging gas cylinder valve, which comprises a valve body with a ventilation cavity and a valve rod, wherein the ventilation cavity sequentially comprises a gas outlet section, a sealing section, a sliding section and a gas inlet section from top to bottom; the air outlet section is provided with an air outlet, the air inlet section is internally provided with a sealing element, the sealing element is internally provided with an air inlet, and the lower end of the valve body is inwards bent to form an end cover; the valve rod sequentially comprises a shaft part, a sliding part and an installation part from top to bottom; the installation department is equipped with first sealing washer outward, and the lower extreme of axial region is equipped with the second sealing washer, and the upper end of axial region is equipped with split ring. The utility model discloses have the effect that prevents to dismantle and prevent to fill the dress gas cylinder once more. After the valve rod and the sealing element are installed, the lower end of the valve body is bent and necked down, and the valve rod and the sealing element are bent to form an end cover, so that the valve rod and the sealing element are limited in the valve body, the valve body is prevented from being disassembled and maintained privately, and potential safety hazards are caused by subsequent re-use. Even if the valve body is disassembled, the whole valve body needs to be damaged, the internal parts can be taken out, and the valve body cannot be reassembled for use.
Description
Technical Field
The utility model relates to an aerating device technical field especially relates to a non-refillable gas cylinder valve.
Background
At present, the non-repeatedly-filled gas cylinders on the market are regulated to finish once medium filling and not to be secondarily filled due to the safety consideration, and are directly scrapped after being used once filling and not to be repeatedly used. However, the valves used with such cylinders are not provided with structures to prevent disassembly and structures to prevent re-inflation. If the disassembly prevention structure is not provided, the grease is stained in the disassembly and maintenance process, and accidents such as explosion and the like are easily caused by subsequent re-filling, so that potential safety hazards exist. And a structure for preventing refilling is not provided, so that the final customer can fill the liquid automatically and can recycle the liquid, and the potential safety hazard is also existed.
Disclosure of Invention
An object of the utility model is to provide a non-repeated dress gas cylinder valve that fills, it can solve the technical problem who mentions in the background art.
In order to achieve the above purpose, the technical solution of the present invention is as follows: a non-repeated filling gas cylinder valve comprises a valve body, wherein the valve body is provided with a ventilation cavity which is axially communicated, a valve rod which can reciprocate penetrates through the ventilation cavity, the ventilation cavity sequentially comprises a gas outlet section, a sealing section, a sliding section and a gas inlet section from top to bottom, and the inner diameter of the sliding section is larger than that of the sealing section and smaller than that of the gas inlet section;
the air outlet section is provided with an air outlet, the air inlet section is internally provided with a sealing element, the sealing element is internally provided with an air inlet, the upper end of the sealing element is abutted against a shaft shoulder at the joint of the air inlet section and the sliding section, and the lower end of the valve body is bent inwards to form an end cover which is blocked at the lower end of the sealing element;
the valve rod sequentially comprises a shaft part, a sliding part and an installation part from top to bottom, the sliding part and the installation part slide in the sliding section, the outer diameter of the sliding part is larger than the inner diameter of the sealing section, and the outer diameter of the sliding part is also larger than the inner diameter of the sealing element;
the installation department is equipped with outward and seals up first sealing washer on the sealing member, the lower extreme of axial region is equipped with and seals up second sealing washer on the sealing section, the upper end of axial region exposes the section of giving vent to anger is outer and be equipped with split ring, and the external diameter of this split ring is greater than the internal diameter of the section of giving vent to anger.
Preferably, a limiting convex ring is arranged outside the middle of the valve body, a first connecting thread portion and a second connecting thread portion are respectively arranged on two sides of the limiting convex ring outside the valve body, a contraction portion is arranged below the second connecting thread portion on the valve body, the contraction portion and the second connecting thread portion are in transition through a conical portion, and the lower end of the contraction portion is pressed and bent inwards after the valve rod and the sealing element are installed in the valve body to form the end cover.
Preferably, a third sealing ring is arranged outside the valve body and below the limiting convex ring.
Preferably, the sealing element is made of metal or nylon.
Preferably, an outer wall of the sliding portion is polygonal, and a flow gap is formed between the outer wall of the sliding portion and an inner wall of the sliding section.
Preferably, the mounting portion is provided with a first annular groove, the first annular groove is embedded with the first sealing ring, two ends of the shaft portion are respectively provided with a second annular groove and a third annular groove, the second annular groove is embedded with the second sealing ring, and the third annular groove is internally provided with the split washer.
Preferably, the upper end of the sealing member is provided with a tapered surface that contacts the first seal ring.
The beneficial effects of the utility model reside in that: the utility model discloses have the effect that prevents to dismantle and prevent to fill the dress gas cylinder once more. After the valve rod and the sealing element are installed, the lower end of the valve body is bent and necked down, and the valve rod and the sealing element are bent to form an end cover, so that the valve rod and the sealing element are limited in the valve body, the valve body is prevented from being disassembled and maintained privately, and potential safety hazards are caused by subsequent re-use. Even if the valve body is disassembled, the whole valve body needs to be damaged, the internal parts can be taken out, and the valve body cannot be reassembled for use.
Drawings
Fig. 1 is one of the schematic views of the usage status of the present invention.
Fig. 2 is a second schematic view of the usage state of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the utility model provides a non-refillable cylinder valve, which comprises a valve body 1, wherein the valve body is provided with a ventilation cavity which is axially communicated, a valve rod which can reciprocate is arranged in the ventilation cavity in a penetrating way, the ventilation cavity sequentially comprises a gas outlet section 2, a sealing section 3, a sliding section 4 and a gas inlet section from top to bottom, and the inner diameter of the sliding section 4 is larger than the inner diameter of the sealing section 3 and smaller than the inner diameter of the gas inlet section; the air outlet section 2 is provided with an air outlet, the air inlet section is internally provided with a sealing element 5, the sealing element is internally provided with an air inlet 6, the upper end of the sealing element 5 is propped against a shaft shoulder at the joint of the air inlet section and the sliding section 4, and the lower end of the valve body 1 is bent inwards to form an end cover 10 which is blocked at the lower end of the sealing element 5; the valve rod sequentially comprises a shaft part 7, a sliding part 8 and a mounting part 9 from top to bottom, the sliding part and the mounting part slide in the sliding section 4, the outer diameter of the sliding part 8 is larger than the inner diameter of the sealing section 3, and the outer diameter of the sliding part is also larger than the inner diameter of the sealing element 5; the installation department 9 is equipped with outward and seals up first sealing washer 11 on the sealing member 5, the lower extreme of axial region 7 is equipped with and seals up second sealing washer 12 on the seal segment 3, the upper end of axial region 7 exposes the section of giving vent to anger is outer and be equipped with split retainer ring 13, and this split retainer ring 13's external diameter is greater than the internal diameter of the section of giving vent to anger.
The utility model discloses a valve body 1's one end that is close to sealing member 5 is connected with the non-repeated gas cylinder that fills, another end is connected and is aerifyd the air supply, the valve rod can slide in valve body 1, because of split ring 13's effect, make first sealing washer 11 can not seal on sealing member 5, second sealing washer 12 also can not seal on seal segment 3, the chamber of ventilating among the valve body 1 is unblocked, aerify in the air supply can filling the gas cylinder to the non-repeated, aerify until the end, the non-repeated atmospheric pressure that fills in the gas cylinder is balanced with aerifing the air supply, and fill the effect of gas cylinder internal gas pressure at the non-repeated jack-up valve rod that makes progress down, second sealing washer 12 on the valve rod seals on seal segment 3, seal valve body 1's the chamber of ventilating. When the gas supply is to gas equipment to the non-repeated dress gas cylinder of filling, gas equipment is connected to one end of keeping away from the sealing member of valve body 1, and gas equipment backs up the valve rod a little and makes the chamber of ventilating in the valve body 1 unblocked, can make the non-repeated dress gas cylinder of filling pass through the utility model discloses to gas equipment gas supply, when the gas in the non-repeated dress gas cylinder of filling gradually used up atmospheric pressure reduces gradually, the valve rod moves down under the effect of gravity, first sealing washer 11 on it seals on sealing member 5, during the upper end of valve rod did not sink into valve body 1, when reinflating this moment, gas pressure makes first sealing washer more closely seal the sealing member, and gas can't fill in the non-repeated dress gas cylinder of filling, can not fill the dress again, so played the effect of unable repeated dress. If the customer disassembles by oneself, then need destroy whole valve body, just can take out the maintenance with internals, because of the destruction of valve body, then can not assemble the use again, so played the effect of anti-disassembly.
Preferably, a limiting convex ring 14 is arranged outside the middle part of the valve body 1, a first connecting thread part 15 and a second connecting thread part 16 are respectively arranged on two sides of the limiting convex ring outside the valve body, a contraction part 17 is arranged below the second connecting thread part on the valve body, the contraction part and the second connecting thread part are in transition 19 through a conical part, and the lower end of the contraction part is pressed and bent inwards after the valve rod and the sealing element 5 are installed in the valve body to form the end cover 18. The first connecting thread part 15 is used for connecting an inflation gas source or gas using equipment, the second connecting thread part 16 is used for connecting a non-refillable gas cylinder, the limiting convex ring 14 plays a role in positioning and guiding, and the conical transition part 19 plays a role in guiding.
Preferably, the valve body 1 is externally provided with a third sealing ring 20 below the limit convex ring, so that the sealing effect is better.
Preferably, the sealing element 5 is made of metal or nylon, and the sealing effect is good.
Preferably, the outer wall of the sliding portion 8 is polygonal, and a flow gap is formed between the outer wall of the sliding portion 8 and the inner wall of the sliding section 4, so that the sliding is smooth.
Preferably, the mounting portion 9 is provided with a first annular groove, the first annular groove is embedded with the first sealing ring 11, two ends of the shaft portion 7 are respectively provided with a second annular groove and a third annular groove, the second annular groove is embedded with the second sealing ring 12, and the third annular groove is provided with the split washer 13, so that the mounting is convenient.
Preferably, the upper end of the sealing member 5 is provided with a tapered surface 18 contacting with the first sealing ring 11, so that the sealing effect is good.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a non-refillable cylinder valve, includes the valve body, but this valve body has the ventilation chamber that the axial link up, but wears to be equipped with reciprocating motion's valve rod in this ventilation chamber, its characterized in that: the ventilation cavity sequentially comprises an air outlet section, a sealing section, a sliding section and an air inlet section from top to bottom, and the inner diameter of the sliding section is larger than that of the sealing section and smaller than that of the air inlet section;
the air outlet section is provided with an air outlet, the air inlet section is internally provided with a sealing element, the sealing element is internally provided with an air inlet, the upper end of the sealing element is abutted against a shaft shoulder at the joint of the air inlet section and the sliding section, and the lower end of the valve body is bent inwards to form an end cover which is blocked at the lower end of the sealing element;
the valve rod sequentially comprises a shaft part, a sliding part and an installation part from top to bottom, the sliding part and the installation part slide in the sliding section, the outer diameter of the sliding part is larger than the inner diameter of the sealing section, and the outer diameter of the sliding part is also larger than the inner diameter of the sealing element;
the installation department is equipped with outward and seals up first sealing washer on the sealing member, the lower extreme of axial region is equipped with and seals up second sealing washer on the sealing section, the upper end of axial region exposes the section of giving vent to anger is outer and be equipped with split ring, and the external diameter of this split ring is greater than the internal diameter of the section of giving vent to anger.
2. The non-refillable gas cylinder valve of claim 1 wherein: the valve body is characterized in that a limiting convex ring is arranged outside the middle of the valve body, a first connecting thread portion and a second connecting thread portion are respectively arranged on two sides of the limiting convex ring outside the valve body, a contraction portion is arranged below the second connecting thread portion on the valve body and is in transition with the second connecting thread portion through a conical portion, and the lower end of the contraction portion is formed by pressing and bending the valve rod and a sealing element into the valve body and then inwards to form the end cover.
3. The non-refillable gas cylinder valve of claim 2 wherein: and a third sealing ring is arranged outside the valve body and below the limiting convex ring.
4. A non-refillable gas cylinder valve according to claim 1, 2 or 3 wherein: the sealing element is made of metal materials or nylon materials.
5. A non-refillable gas cylinder valve according to claim 1, 2 or 3 wherein: the outer wall of the sliding part is polygonal, and a circulation gap is formed between the outer wall of the sliding part and the inner wall of the sliding section.
6. A non-refillable gas cylinder valve according to claim 1, 2 or 3 wherein: the installation part is provided with a first annular groove, the first annular groove is embedded with the first sealing ring, the two ends of the shaft part are respectively provided with a second annular groove and a third annular groove, the second annular groove is embedded with the second sealing ring, and the third annular groove is internally provided with the split washer.
7. A non-refillable gas cylinder valve according to claim 1, 2 or 3 wherein: the upper end of the sealing element is provided with a conical surface which is in contact with the first sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022643622.XU CN213954985U (en) | 2020-11-16 | 2020-11-16 | Non-repeated filling gas cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022643622.XU CN213954985U (en) | 2020-11-16 | 2020-11-16 | Non-repeated filling gas cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954985U true CN213954985U (en) | 2021-08-13 |
Family
ID=77208840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022643622.XU Active CN213954985U (en) | 2020-11-16 | 2020-11-16 | Non-repeated filling gas cylinder valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954985U (en) |
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2020
- 2020-11-16 CN CN202022643622.XU patent/CN213954985U/en active Active
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