CN202066264U - One-way liquid charging pipe - Google Patents
One-way liquid charging pipe Download PDFInfo
- Publication number
- CN202066264U CN202066264U CN2011201389184U CN201120138918U CN202066264U CN 202066264 U CN202066264 U CN 202066264U CN 2011201389184 U CN2011201389184 U CN 2011201389184U CN 201120138918 U CN201120138918 U CN 201120138918U CN 202066264 U CN202066264 U CN 202066264U
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- CN
- China
- Prior art keywords
- baffle plate
- pipe
- nylon
- lower baffle
- liquid charging
- Prior art date
- 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 relates to an operating tool, in particular to a liquid charging tool for charging a refrigerant to a refrigerating system. A one-way liquid charging pipe comprises flexible connectors, rubber sealing gaskets, a nylon pipe, a lower baffle plate, a small ball and an upper baffle plate, wherein the tips of two ends of the nylon pipe are respectively provided with a radial bugle and are sleeved and connected with the flexible connectors, and two end surfaces of the nylon pipe are respectively sealed by the rubber sealing gasket; the small ball is a solid ball made of plastic or rubber and is limited by the upper baffle plate and the lower baffle plate in the axial distance of 6mm-8mm from the nylon pipe, and the external diameter of the small ball is 3.5mm to 4.5mm; the upper baffle plate is fixedly connected with the nylon pipe and is arranged at an end close to the nylon pipe, and a through hole with the diameter of 3mm-4mm is formed in the middle of the upper baffle plate; and the lower baffle plate is fixedly connected with the nylon pipe, and four through holes with the diameters of 1mm-1.5mm are uniformly distributed on the side. When the refrigerant is charged to the refrigerating system, the one-way liquid charging pipe can prevent the refrigerant or the refrigeration oil from flowing backward; when the vacuum pumping is over, the one-way liquid charging pipe can prevent sealing oil of a vacuum pump and air from entering the refrigerating system; and the one-way liquid charging pipe is simple to manufacture and convenient to operate.
Description
Technical field
The utility model relates to operation tool, especially a kind of liquid feeding instrument that is used for to refrigeration system filling cold-producing medium.
Background technology
From refrigerant cylinder during to the refrigeration system refrigerant feeding, sometimes the pressure of refrigeration system can be greater than the pressure in the refrigerant cylinder, at this moment, the cold-producing medium and the refrigeration oil of refrigeration system can pour in down a chimney back refrigerant cylinder, refrigeration oil that these pour in down a chimney back and cold-producing medium, the impurity and the moisture that often contain are more, and the cold-producing medium in the steel cylinder is polluted, and cause damage.In addition, after refrigeration system vacuumizes end, must close charging valve earlier, close vavuum pump then, otherwise the Seal Oil in the vavuum pump can flow to the refrigeration system of vacuum under the effect of atmospheric pressure, cause refrigeration system vacuum to descend, refrigeration oil is contaminated.From refrigerant cylinder during to the refrigeration system refrigerant feeding, in order to prevent that cold-producing medium and refrigeration oil from pouring in down a chimney back refrigerant cylinder, operating personnel will observe the pressure of refrigeration system constantly, if the pressure of finding refrigeration system is greater than the pressure in the refrigerant cylinder, then close charging valve, this by people's method of operating, extremely unreliable, probably in time do not close charging valve and cause cold-producing medium contaminated.After refrigeration system vacuumizes end, must operate in order, accidentally operating mistake must vacuumize again, and is time-consuming.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of liquid feeding instrument that is used for to refrigeration system filling cold-producing medium, the characteristic that has unidirectional refrigerant feeding and vacuumize.
The technical solution of the utility model is:
A kind of unidirectional liquid-feeding tube comprises active joint, rubber gasket, nylon tube, lower baffle plate, bead, overhead gage.Described nylon tube two ends end portion radial protrusion is arranged, respectively socket active joint, two end faces of described nylon tube are sealed by a rubber gasket respectively.
Described bead is the medicine ball that adopts plastics or rubber to be made into, and is limited in the axial distance of nylon tube 6mm to 8mm the external diameter 3.5mm to 4.5mm of described bead by overhead gage and lower baffle plate.
Described overhead gage is fixedlyed connected with nylon tube, is arranged on the end near nylon tube, has the through hole of a diameter 3mm to 4mm in the middle of the described overhead gage.
Described lower baffle plate is fixedlyed connected with nylon tube, has the through hole of equally distributed four diameter 1mm to 1.5mm on the limit.
The beneficial effects of the utility model are as follows:
(1) can when the refrigeration system refrigerant feeding, prevent that cold-producing medium or refrigeration oil from pouring in down a chimney;
(2) can when vacuumizing end, prevent that vavuum pump Seal Oil and air from entering refrigeration system;
(3) make simply, easy to operate.
Description of drawings
Fig. 1 is the full sectional view of the utility model liquid-feeding tube;
Fig. 2 is the A-A view of the utility model liquid-feeding tube.
Among the figure: active joint 1, rubber gasket 2, nylon tube 3, lower baffle plate 4, bead 5, overhead gage 6.
The specific embodiment
Below in conjunction with accompanying drawing 1 and Fig. 2 the enforcement of technical scheme is described in further detail:
As depicted in figs. 1 and 2, according to technical scheme provided by the invention, a kind of unidirectional liquid-feeding tube comprises active joint 1, rubber gasket 2, nylon tube 3, lower baffle plate 4, bead 5, overhead gage 6.Described nylon tube 3 two ends end portion radial protrusion is arranged, respectively socket active joint 1, two end faces of described nylon tube 3 are sealed by a rubber gasket 2 respectively.
Described bead 5 is the medicine balls that adopt plastics or rubber to be made into, and is limited in the axial distance of 6mm to 8mm in the nylon tube 3 the external diameter 3.5mm to 4.5mm of described bead 5 by overhead gage 6 and lower baffle plate 4.
Described overhead gage 6 is fixedlyed connected with nylon tube 3, is arranged on the end near nylon tube 3, has the through hole of a diameter 3mm to 4mm in the middle of the described overhead gage 6.
Described lower baffle plate 4 is fixedlyed connected with nylon tube 3, has the through hole of equally distributed four diameter 1mm to 1.5mm on the limit.
Now with following embodiment and in conjunction with the accompanying drawings 1 and 2 pair of the technical solution of the utility model be described further:
Embodiment 1
When using unidirectional liquid-feeding tube refrigerant feeding, there is an end of bead 5 to aim at refrigerant cylinder liquid-feeding tube, active joint 1 is connected the charging valve of refrigerant cylinder, the other end connects the refrigeration system filling opening, opens the charging valve of refrigerant cylinder.If the refrigerant pressure in the steel cylinder is greater than the pressure of refrigeration system at this moment, bead 5 is pushed to lower baffle plate 4 and since the through hole of lower baffle plate 4 around, cold-producing medium still can be from lower baffle plate 4 conductings, be that cold-producing medium successively flows to overhead gage 6, lower baffle plate 4 from steel cylinder, then flow to refrigeration system; Otherwise, if the refrigerant pressure in the steel cylinder is less than the pressure of refrigeration system at this moment, bead 5 is pushed to overhead gage 6, because the through hole of overhead gage 6 is at the center, blocked the back cold-producing medium by bead 5 and can not promptly prevent pouring in down a chimney of cold-producing medium and refrigeration oil effectively from overhead gage 6 conductings.
Embodiment 2
When vacuumizing, there is an end of bead 5 to aim at and connect the refrigeration system filling opening liquid-feeding tube, the other end connects vavuum pump, and energising vacuumizes, and the pressure of refrigeration system is greater than the pressure of vavuum pump at this moment, bead 5 is pushed to lower baffle plate 4, since the through hole of lower baffle plate 4 around, the air of refrigeration system still can be from lower baffle plate 4 conductings, promptly air successively flows to overhead gage 6, lower baffle plate 4 from refrigeration system, then flow to vavuum pump, be discharged from refrigeration system; Stop vavuum pump, ambient pressure is greater than the pressure of refrigeration system at this moment, and bead 5 is pushed to overhead gage 6, because the through hole of overhead gage 6 is at the center, blocked the back air by bead 5 and can not prevent effectively that promptly pouring in down a chimney of air and vavuum pump Seal Oil from entering refrigeration system from overhead gage 6 conductings.
The utility model has the advantages that unidirectional liquid-feeding tube can prevent that cold-producing medium or refrigeration oil from pouring in down a chimney when the refrigeration system refrigerant feeding; When vacuumizing end, prevent that vavuum pump Seal Oil and air from entering refrigeration system; Unidirectional liquid-feeding tube is made simple, and is easy to operate.
Claims (4)
1. a unidirectional liquid-feeding tube comprises active joint (1), rubber gasket (2), nylon tube (3), lower baffle plate (4), bead (5), overhead gage (6).Described nylon tube (3) two ends end portion radial protrusion is arranged, respectively socket active joint (1), two end faces of described nylon tube (3) are sealed by a rubber gasket (2) respectively.
2. liquid-feeding tube according to claim 1, it is characterized in that: described bead (5) is the medicine ball that adopts plastics or rubber to be made into, be limited in the axial distance of 6mm to 8mm in the nylon tube (3) the external diameter 3.5mm to 4.5mm of described bead (5) by overhead gage (6) and lower baffle plate (4).
3. liquid-feeding tube according to claim 1 is characterized in that: described overhead gage (6) is fixedlyed connected with nylon tube (3), is arranged on the end near nylon tube (3), has the through hole of a diameter 3mm to 4mm in the middle of the described overhead gage (6).
4. liquid-feeding tube according to claim 1 is characterized in that: described lower baffle plate (4) is fixedlyed connected with nylon tube (3), has the through hole of equally distributed four diameter 1mm to 1.5mm on the limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201389184U CN202066264U (en) | 2011-04-30 | 2011-04-30 | One-way liquid charging pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201389184U CN202066264U (en) | 2011-04-30 | 2011-04-30 | One-way liquid charging pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202066264U true CN202066264U (en) | 2011-12-07 |
Family
ID=45060125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201389184U Expired - Fee Related CN202066264U (en) | 2011-04-30 | 2011-04-30 | One-way liquid charging pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202066264U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470905A (en) * | 2013-09-21 | 2013-12-25 | 苏州市吴中区曙光铜管厂 | One-way pipe |
| CN103743172A (en) * | 2013-12-30 | 2014-04-23 | 西安邮电大学 | Air conditioner refrigerant anti-reflux safe injecting device |
-
2011
- 2011-04-30 CN CN2011201389184U patent/CN202066264U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470905A (en) * | 2013-09-21 | 2013-12-25 | 苏州市吴中区曙光铜管厂 | One-way pipe |
| CN103743172A (en) * | 2013-12-30 | 2014-04-23 | 西安邮电大学 | Air conditioner refrigerant anti-reflux safe injecting device |
| CN103743172B (en) * | 2013-12-30 | 2016-08-17 | 西安邮电大学 | Air-conditioning refrigerant counterflow-preventing rushes safely dispensing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20120430 |