CN103174838A - Pressure stop valve used on refrigerant storage tank - Google Patents
Pressure stop valve used on refrigerant storage tank Download PDFInfo
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- CN103174838A CN103174838A CN2013100896096A CN201310089609A CN103174838A CN 103174838 A CN103174838 A CN 103174838A CN 2013100896096 A CN2013100896096 A CN 2013100896096A CN 201310089609 A CN201310089609 A CN 201310089609A CN 103174838 A CN103174838 A CN 103174838A
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- storage tank
- valve
- piston
- refrigeration agent
- valve rod
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Abstract
The invention discloses a pressure stop valve used on a refrigerant storage tank. The pressure stop valve used on the refrigerant storage tank comprises a hand wheel, a valve body, a lower interface, a side port, a first valve rod, a stop pin, an O-shaped sealing ring, a first piston, a first sealing gasket, a second valve rod, a second piston, a spring, a limit clamp, and a second sealing gasket. The pressure stop valve used on the refrigerant storage tank can close automatically and guarantees that a few of refrigerants with certain pressure are left in the storage tank, other refrigerants or working mediums are prevented from mixing into the refrigerants in the storage tank, and the refrigerants can be filled into the storage tank through special tools of manufacturers.
Description
Technical field
The invention belongs to refrigeration technology field, particularly a kind of for the pressure stop valve on the refrigeration agent storage tank.
Background technique
At present, in refrigeration, field of air conditioning, for ease of carrying and using and convenient the recycling, a large amount of steel refrigeration agent storage tanks that use less volume, this storage tank is mostly installed stop valve at jointing, stop valve one end is connected with the storage tank interface, the other end is connected with the external pipeline that charges refrigeration agent, open stop valve when charging refrigeration agent or refrigeration agent is shifted in the chiller plant by storage tank in storage tank, charge close stop valve after complete so that the storage tank sealing not to the outward leakage refrigeration agent.But the effect that stop valve generally only has unlatching and ends is installed on existing storage tank, after the refrigeration agent in storage tank is finished using, have air in storage tank and moisture enters, operator also tend to forget and close stop valve, reclaim the storage tank that uses and must clean and vacuumize just and can reuse, the operation more complicated, wasted a large amount of man-hours, also have a large amount of storage tanks because entering of air and moisture caused inner wall corrosion, so that can't reuse again, cause waste.In addition, because the refrigeration agent storage tank can be reused, faking also for illegal retailer offers an opportunity, illegal retailer often buys the refrigeration agent storage tank of the sky of the legitimate enterprise that uses return, just can open the stop valve of storage tank without any need for difficulty, ropy refrigeration agent is charged into, pretend to be the brand product of legitimate enterprise to sell profit, thereby disrupt the market and to the legitimate enterprise economic loss.
Summary of the invention
The object of the present invention is to provide a kind of can autoshutdown and guarantee to leave in storage tank a small amount of refrigeration agent of certain pressure, can avoid sneaking into of other refrigeration agents or working medium, the special tool by manufacturing firm charges the pressure stop valve on the refrigeration agent storage tank of being used for of refrigeration agent in the storage tank only.
The technical solution that realizes the object of the invention is:
A kind of for the pressure stop valve on the refrigeration agent storage tank, comprising: handwheel, valve body, lower interface, side interface, the first valve rod, position limit pin, O V-shaped ring, first piston, the first sealing gasket, the second valve rod, the second piston, spring, limiting card and the second sealing gasket; Wherein, the first valve rod is connected in valve body top by pipe thread, position limit pin is fixed in the lower end of valve body upper inner pipe thread, handwheel is fixed on the top of the first valve rod, first piston is fixed on the lower end of the first valve rod, and the O V-shaped ring is arranged in the groove of first piston, and the first sealing gasket is fixed on the first piston lower end, lower interface is positioned at valve body lower end, is connected with refrigeration agent holding vessel interface; Side interface is positioned at the valve body side, be connected with the exterior line that charges refrigeration agent, limiting card is arranged at the side interface inside of valve body, the second valve rod is arranged in limiting card, the second piston is fixed on the second valve rod near an end of valve body, and the second sealing gasket is fixed on the second piston near an end of valve body, and spring is arranged between limiting card and the second valve rod, being the valve first passage between lower interface and the first sealing gasket, is the valve second channel between side interface and the second sealing gasket.
The present invention compared with prior art, its remarkable advantage:
(1) the present invention is installed in the outlet of refrigeration agent storage tank, both can realize the function of common stop valve, again can autoshutdown and guarantee to leave in storage tank a small amount of refrigeration agent of certain pressure, the foreign peoples's materials such as rear air and moisture of avoiding finishing using enter in storage tank, thereby make the refrigeration agent storage tank of recovery no longer need to clean with vacuum pumping namely reusable.
(2) refrigeration agent storage tank of the present invention can be accomplished only export but no import in use, can avoid sneaking into of other refrigeration agents or working medium.
(3) only have in the obsolete situation of the present invention and just can open second channel by the special tool of manufacturing firm and can charge refrigeration agent in storage tank, can effectively increase the difficulty of illegal retailer's imitation behavior, safeguard the rights and interests of legal manufacturing enterprise.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is a kind of for the pressure stop valve on the refrigeration agent storage tank, comprising: handwheel 1, valve body 7, lower interface 8, side interface 11, the first valve rod 2, position limit pin 3, O V-shaped ring 4, first piston 5, the first sealing gasket 6, the second valve rod 14, the second piston 13, spring 10, limiting card 12 and the second sealing gasket 9; Wherein, the first valve rod 2 is connected in valve body 7 tops by pipe thread, position limit pin 3 is fixed in the lower end of valve body 7 upper inner pipe thread, handwheel 1 is fixed on the top of the first valve rod 2, first piston 5 is fixed on the lower end of the first valve rod 2, and O V-shaped ring 4 is arranged in the groove of first piston 5, and the first sealing gasket 6 is fixed on first piston 5 lower ends, lower interface 8 is positioned at valve body 7 lower ends, is connected with refrigeration agent holding vessel interface; Side interface 11 is positioned at valve body 7 sides, be connected with the exterior line that charges refrigeration agent, limiting card 12 is arranged at the side interface inside of valve body 7, the second valve rod 14 is arranged in limiting card 12, the second piston 13 is fixed on the second valve rod 14 near an end of valve body 7, the second sealing gasket 9 is fixed on the second piston 13 near an end of valve body 7, spring 10 is arranged between limiting card 12 and the second valve rod 14, being the valve first passage between lower interface 8 and the first sealing gasket 6, is the valve second channel between side interface 11 and the second sealing gasket 9.
Embodiment: the present invention is a kind of for the pressure stop valve on the refrigeration agent storage tank, as shown in Figure 1, comprising: handwheel 1, valve body 7, lower interface 8, side interface 11, the first valve rod 2, position limit pin 3, O V-shaped ring 4, first piston 5, the first sealing gasket 6, the second valve rod 14, the second piston 13, spring 10, limiting card 12 and the second sealing gasket 9; Handwheel 1 is fixed on the top of the first valve rod 2; First piston 5 is fixed on the lower end of the first valve rod 2; Two O V-shaped rings 4 are arranged in the groove of first piston 5, are used for preventing that refrigeration agent from letting out in the gap between first piston 5 and valve body 7; The first sealing gasket 6 is fixed on first piston 5 lower ends, is used for sealing cut-off first passage; The first valve rod 2 is connected in valve body 7 tops by pipe thread, and handwheel 7 rotations namely drive the first valve rod 2 and move up and down by pipe thread, move up and down thereby drive first piston 5; Position limit pin 3 is fixed in the lower end of valve body 7 upper inner pipe thread, is used for the distance that the restriction valve rod moves, and lower limit is valve first passage maximum opening position, and upper limit is valve first passage cut-off sealing station; Lower interface 8 is positioned at the lower end of valve body 7, is connected with refrigeration agent holding vessel interface; Side interface 11 is positioned at the side of valve body, is connected with exterior line during use; Limiting card 12 is installed on valve body side interface 11 inside, and the second valve rod 14 is installed in limiting card 12; The second valve rod 14 is bayonet arrangement near side interface 11 1 ends, bayonet arrangement is cylindrical, cylindrical outermost end is the annular projection structure, being convenient to professional tool fastens it and be pulled outwardly, the second piston 13 is fixed on the second valve rod 14 near an end of valve body 7, the second sealing gasket 9 is fixed on the second piston 13 near an end of valve body 7, is used for sealing cut-off second channel; Spring 10 is installed between limiting card 12 and the second valve rod 14; Be the valve first passage between lower interface 8 and the first sealing gasket 6, first passage is provided with a circle projection near the position of the first sealing gasket 6, can prevent back flow of refrigerant, is the valve second channel between side interface 11 and the second sealing gasket 9.
Further, the present invention is a kind of for the pressure stop valve on the refrigeration agent storage tank, its using method and principle are as follows: when being rotated counterclockwise handwheel 1, first piston 5 moves up under the first valve rod 2 drives and opens first passage, if storage tank inner refrigerant pressure is greater than spring force and external pressure sum, the spring stress distortion makes the second piston 13 move to the side interface end, thereby make the valve second channel open outside refrigerant release, thereby give by external pipeline the refrigeration system charging refrigerant that needs charging refrigerant; When the holding vessel internal pressure less than spring force and external pressure sum the time the second piston will withstand sealing surface on valve body, even first passage is not closed, refrigeration agent in storage tank can outwards not discharge yet again, and the handwheel 1 that turns clockwise can cut out first passage; When needs charge refrigeration agent in the refrigeration agent storage tank, need fasten the second valve rod 14 and pull out with a kind of special tool(s), thereby open second channel, and then be rotated counterclockwise handwheel 1 and open first passage, can charge refrigeration agent in storage tank.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the claims definition, can make in the form and details various variations to it.
Claims (5)
1. pressure stop valve that is used on the refrigeration agent storage tank, it is characterized in that, comprising: handwheel (1), valve body (7), lower interface (8), side interface (11), the first valve rod (2), position limit pin (3), O V-shaped ring (4), first piston (5), the first sealing gasket (6), the second valve rod (14), the second piston (13), spring (10), limiting card (12) and the second sealing gasket (9), wherein, the first valve rod (2) is connected in valve body (7) top by pipe thread, position limit pin (3) is fixed in the lower end of valve body (7) upper inner pipe thread, handwheel (1) is fixed on the top of the first valve rod (2), first piston (5) is fixed on the lower end of the first valve rod (2), O V-shaped ring (4) is arranged in the groove of first piston (5), the first sealing gasket (6) is fixed on first piston (5) lower end, lower interface (8) is positioned at valve body (7) lower end, is connected with refrigeration agent holding vessel interface, side interface (11) is positioned at valve body (7) side, be connected with the exterior line that charges refrigeration agent, limiting card (12) is arranged at the side interface inside of valve body (7), the second valve rod (14) is arranged in limiting card (12), the second piston (13) is fixed on the second valve rod (14) near an end of valve body (7), the second sealing gasket (9) is fixed on the second piston (13) near an end of valve body (7), spring (10) is arranged between limiting card (12) and the second valve rod (14), be the valve first passage between lower interface (8) and the first sealing gasket (6), be the valve second channel between side interface (11) and the second sealing gasket (9).
2. according to claim 1 a kind ofly it is characterized in that for the pressure stop valve on the refrigeration agent storage tank, described O V-shaped ring (4) is provided with two.
3. according to claim 1 a kind ofly it is characterized in that for the pressure stop valve on the refrigeration agent storage tank, described first passage is provided with a circle projection near the position of the first sealing gasket (6).
4. according to claim 1 a kind ofly it is characterized in that for the pressure stop valve on the refrigeration agent storage tank, described the second valve rod (14) is bayonet arrangement near side interface (11) one ends.
5. according to claim 4 a kind ofly it is characterized in that for the pressure stop valve on the refrigeration agent storage tank, described bayonet arrangement is cylindrical, and cylindrical outermost end is the annular projection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100896096A CN103174838A (en) | 2013-03-20 | 2013-03-20 | Pressure stop valve used on refrigerant storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100896096A CN103174838A (en) | 2013-03-20 | 2013-03-20 | Pressure stop valve used on refrigerant storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103174838A true CN103174838A (en) | 2013-06-26 |
Family
ID=48634899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100896096A Pending CN103174838A (en) | 2013-03-20 | 2013-03-20 | Pressure stop valve used on refrigerant storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103174838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT17019U1 (en) * | 2019-08-28 | 2021-02-15 | Zieger Dipl Ing Andreas | |
| AT17069U1 (en) * | 2019-08-28 | 2021-04-15 | Andreas Zieger Dipl Ing | MANUALLY OPERATED VALVE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2307546A (en) * | 1940-07-24 | 1943-01-05 | Oil Well Supply Co | Valve and valve seat |
| DE3311566C1 (en) * | 1983-03-30 | 1984-10-25 | GESA Gebr. Salmen GmbH, 5750 Menden | Valve |
| KR101165795B1 (en) * | 2009-07-30 | 2012-07-17 | (주)에쎈테크 | Valve for gas container |
| CN203131043U (en) * | 2013-03-20 | 2013-08-14 | 南京金典制冷实业有限公司 | Pressure stop valve for refrigerant storage tank |
-
2013
- 2013-03-20 CN CN2013100896096A patent/CN103174838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2307546A (en) * | 1940-07-24 | 1943-01-05 | Oil Well Supply Co | Valve and valve seat |
| DE3311566C1 (en) * | 1983-03-30 | 1984-10-25 | GESA Gebr. Salmen GmbH, 5750 Menden | Valve |
| KR101165795B1 (en) * | 2009-07-30 | 2012-07-17 | (주)에쎈테크 | Valve for gas container |
| CN203131043U (en) * | 2013-03-20 | 2013-08-14 | 南京金典制冷实业有限公司 | Pressure stop valve for refrigerant storage tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT17019U1 (en) * | 2019-08-28 | 2021-02-15 | Zieger Dipl Ing Andreas | |
| AT17069U1 (en) * | 2019-08-28 | 2021-04-15 | Andreas Zieger Dipl Ing | MANUALLY OPERATED VALVE |
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Application publication date: 20130626 |