CN203131043U - Pressure stop valve for refrigerant storage tank - Google Patents
Pressure stop valve for refrigerant storage tank Download PDFInfo
- Publication number
- CN203131043U CN203131043U CN 201320127443 CN201320127443U CN203131043U CN 203131043 U CN203131043 U CN 203131043U CN 201320127443 CN201320127443 CN 201320127443 CN 201320127443 U CN201320127443 U CN 201320127443U CN 203131043 U CN203131043 U CN 203131043U
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- China
- Prior art keywords
- valve
- storage tank
- piston
- refrigeration agent
- valve rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a pressure stop valve for a refrigerant storage tank. The pressure stop valve comprises a handwheel, a valve body, a lower interface, a side interface, a first valve rod, limiting pins, O-shaped sealing rings, a first piston, a first sealing gasket, a second valve rod, a second piston, springs, a limiting card and second sealing gaskets. According to the utility model, the pressure stop valve can be closed automatically, ensures that a small amount of a refrigerant with certain pressure is reserved in the storage tank, and prevents other refrigerants or working substances from mixing into the storage tank; and meanwhile, only a special tool from manufacturers can be used for filling the refrigerant into the storage tank.
Description
Technical field
The utility model belongs to refrigeration technology field, and is 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, when in storage tank, charging refrigeration agent or refrigeration agent shifted in the chiller plant by storage tank, then open stop valve, charge and then close stop valve so that refrigeration agent is not outwards revealed in the storage tank sealing after finishing.But stop valve is installed on the existing storage tank is generally only had the effect of opening and ending, after the refrigeration agent in the storage tank is finished using, have air in the 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 air and entering of moisture are 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 cause economic loss to legitimate enterprise.
The model utility content
The purpose of this utility model is to provide a kind of lower amount of refrigerant that can close and guarantee to leave in the storage tank certain pressure automatically, 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 utility model purpose is:
A kind of for the pressure stop valve on the refrigeration agent storage tank, comprising: handwheel, valve body, lower interface, side interface, first valve rod, position limit pin, O V-shaped ring, first piston, first sealing gasket, second valve rod, second piston, spring, spacing card and second sealing gasket; Wherein, 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 first valve rod, first piston is fixed on the lower end of first valve rod, and the O V-shaped ring is arranged in the groove of first piston, and 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, spacing card is arranged at the side interface inside of valve body, second valve rod is arranged in the spacing card, second piston is fixed on second valve rod near an end of valve body, and second sealing gasket is fixed on second piston near an end of valve body, and spring is arranged between spacing card and second valve rod, being the valve first passage between lower interface and first sealing gasket, is the valve second channel between side interface and second sealing gasket.
The utility model compared with prior art, its remarkable advantage:
(1) the utility model is installed in the outlet of refrigeration agent storage tank, both can realize the function of common stop valve, can close and guarantee to leave in the storage tank lower amount of refrigerant of certain pressure again automatically, the foreign peoples's materials such as back air and moisture of avoiding finishing using enter in the 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 utility model can be accomplished only export but no import in use, can avoid sneaking into of other refrigeration agents or working medium.
(3) have only under the obsolete situation of the utility model and just can open second channel by the special tool of manufacturing firm and can in storage tank, charge refrigeration agent, 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 utility model is described in further detail.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model 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, first valve rod 2, position limit pin 3, O V-shaped ring 4, first piston 5, first sealing gasket 6, second valve rod 14, second piston 13, spring 10, spacing card 12 and second sealing gasket 9; Wherein, 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 first valve rod 2, first piston 5 is fixed on the lower end of first valve rod 2, and O V-shaped ring 4 is arranged in the groove of first piston 5, and 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, spacing card 12 is arranged at the side interface inside of valve body 7, second valve rod 14 is arranged in the spacing card 12, second piston 13 is fixed on second valve rod 14 near an end of valve body 7, second sealing gasket 9 is fixed on second piston 13 near an end of valve body 7, spring 10 is arranged between spacing card 12 and second valve rod 14, being the valve first passage between lower interface 8 and first sealing gasket 6, is the valve second channel between side interface 11 and second sealing gasket 9.
Embodiment: the utility model 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, first valve rod 2, position limit pin 3, O V-shaped ring 4, first piston 5, first sealing gasket 6, second valve rod 14, second piston 13, spring 10, spacing card 12 and second sealing gasket 9; Handwheel 1 is fixed on the top of first valve rod 2; First piston 5 is fixed on the lower end of first valve rod 2; Two O V-shaped rings 4 are installed 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 the valve body 7; First sealing gasket 6 is fixed on first piston 5 lower ends, is used for sealing by first passage; First valve rod 2 is connected in valve body 7 tops by pipe thread, and handwheel 7 rotation namely drives first valve rod 2 and moves up and down by pipe thread, moves 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 ends sealing station for the valve first passage; 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; Spacing card 12 is installed on valve body side interface 11 inside, and second valve rod 14 is installed in the spacing card 12; 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, second piston 13 is fixed on second valve rod 14 near an end of valve body 7, second sealing gasket 9 is fixed on second piston 13 near an end of valve body 7, is used for sealing by second channel; Spring 10 is installed between spacing card 12 and second valve rod 14; Be the valve first passage between lower interface 8 and first sealing gasket 6, first passage is provided with a circle projection near the position of first sealing gasket 6, can prevent back flow of refrigerant, is the valve second channel between side interface 11 and second sealing gasket 9.
Further, the utility model 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 first valve rod 2 drives and opens first passage, if storage tank inner refrigerant pressure is greater than spring force and external pressure sum, then the spring stress distortion makes second piston 13 move to the side interface end, thereby make the valve second channel open outside release refrigeration agent, thereby fill refrigeration agent for the refrigeration system that needs to fill refrigeration agent by external pipeline; When the holding vessel internal pressure less than spring force and external pressure sum the time second piston will withstand sealing surface on the valve body, even first passage is not closed, refrigeration agent in the 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, then need to fasten second valve rod 14 and outwards pulling with a kind of special tool(s), thereby open second channel, and then be rotated counterclockwise handwheel 1 and open first passage, can in storage tank, charge refrigeration agent.
As mentioned above, although represented and explained the utility model that with reference to specific preferred embodiment it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model that does not break away from the claims definition, can make various variations in the form and details 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), first valve rod (2), position limit pin (3), O V-shaped ring (4), first piston (5), first sealing gasket (6), second valve rod (14), second piston (13), spring (10), spacing card (12) and second sealing gasket (9); Wherein, 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 first valve rod (2), first piston (5) is fixed on the lower end of first valve rod (2), O V-shaped ring (4) is arranged in the groove of first piston (5), 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, spacing card (12) is arranged at the side interface inside of valve body (7), second valve rod (14) is arranged in the spacing card (12), second piston (13) is fixed on second valve rod (14) near an end of valve body (7), second sealing gasket (9) is fixed on second piston (13) near an end of valve body (7), spring (10) is arranged between spacing card (12) and second valve rod (14), being the valve first passage between lower interface (8) and first sealing gasket (6), is the valve second channel between side interface (11) and second sealing gasket (9).
2. according to claim 1ly 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 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 second valve rod (14) is bayonet arrangement near side interface (11) one ends.
5. according to claim 4ly a kind ofly it is characterized in that for the pressure stop valve on the refrigeration agent storage tank described bayonet arrangement is cylindrical, cylindrical outermost end is the annular projection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127443 CN203131043U (en) | 2013-03-20 | 2013-03-20 | Pressure stop valve for refrigerant storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127443 CN203131043U (en) | 2013-03-20 | 2013-03-20 | Pressure stop valve for refrigerant storage tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203131043U true CN203131043U (en) | 2013-08-14 |
Family
ID=48939023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320127443 Expired - Fee Related CN203131043U (en) | 2013-03-20 | 2013-03-20 | Pressure stop valve for refrigerant storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203131043U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174838A (en) * | 2013-03-20 | 2013-06-26 | 南京金典制冷实业有限公司 | Pressure stop valve used on refrigerant storage tank |
-
2013
- 2013-03-20 CN CN 201320127443 patent/CN203131043U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174838A (en) * | 2013-03-20 | 2013-06-26 | 南京金典制冷实业有限公司 | Pressure stop valve used on refrigerant storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20160320 |