CN106439179A - Normally-closed type pneumatic vacuum valve for refrigerant filling gun - Google Patents
Normally-closed type pneumatic vacuum valve for refrigerant filling gun Download PDFInfo
- Publication number
- CN106439179A CN106439179A CN201610095475.2A CN201610095475A CN106439179A CN 106439179 A CN106439179 A CN 106439179A CN 201610095475 A CN201610095475 A CN 201610095475A CN 106439179 A CN106439179 A CN 106439179A
- Authority
- CN
- China
- Prior art keywords
- vacuum valve
- pneumatic vacuum
- closed type
- normally
- valve body
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention discloses a normally-closed type pneumatic vacuum valve for a refrigerant filling gun. The normally-closed type pneumatic vacuum valve comprises a filling gun body. A common port and a compressed air port are formed in the filling gun body. A special-shaped rubber gasket is mounted on the common port and connected with a hub. The hub is connected with a pneumatic vacuum valve body. A pressure spring is mounted in the pneumatic vacuum valve body and connected with a piston. A sealing ring is mounted between the piston and the inner wall face of the pneumatic vacuum valve body. A plunger on the piston is connected with the hub. The normally-closed type pneumatic vacuum valve for the refrigerant filling gun is used for replacing a directly-acting type closing normally-open pneumatic vacuum valve on a gun head body, and the defect that abnormal starting happens when the compressed air is interrupted or the pressure is insufficient during production is overcome; and the loss caused by when the normally-open vacuum valve is opened abnormally caused by the shortage of the air supply in a workshop and interruption of the compressed air is avoided.
Description
Technical field
The present invention relates to a kind of coolant injection rifle normally closed type Pneumatic vacuum valve.
Background technology
In refrigeration production field, need to the refrigeration plant evacuation such as air-conditioner, electric refrigerator and charging refrigerant.Industrialization
Production is to carry out accurate filling by professional refrigerant filling machine, on the filling rifle being connected with electric refrigerator, is provided with 2 valves
Door, one is vacuum valve, and another is charging valve, and vacuum valve is connected with vacuum pump refrigerant filling machine within, charging valve with
Refrigerant line system within filling machine is connected.Generally before filling coolant, first open the vacuum valve in pipette tips, to electricity
Refrigerator evacuation, after vacuum is qualified, closes vacuum valve, then opens charging valve, carry out coolant injection.
Vacuum valve is generally divided into two kinds, and one kind is solenoid vacuum valve, and another kind is Pneumatic vacuum valve.Both compare, electromagnetism
Vacuum valve quick action, response performance is good；And the feature of Pneumatic vacuum valve to be valve opening diameter big, evacuate efficiency and compare ELECTROMAGNETIC VACUUM
Valve is slightly higher, and volume can be made less.
On filling rifle, conventional Pneumatic vacuum valve is open in usual, that is, need directly to push up method closing using compressed air, in gas
When being passed through compressed air on the piston of dynamic vacuum valve, piston rod withstands vacuum valve nozzle, so that vacuum loop is closed, when that is, usually always
Compressed air is kept to supply to Pneumatic vacuum valve, to ensure that it closes by force, and in evacuation, compressed air turns off.This
The problems of way is, during coolant injection, when compressed air is interrupted suddenly or voltage supply is not enough, will lead to pneumatic true
Empty valve is opened, and the coolant of high pressure will damage vacuum pump and vacuum transducer, seriously directly into in vacuum pump and its loop
When, the cold-producing medium of splash causes the cold injury of personnel.
Content of the invention
It is an object of the invention to provide a kind of coolant injection rifle normally closed type Pneumatic vacuum valve.For substituting pipette tips main body
The Pneumatic vacuum valve open in usual of upper straight top type closing, it is to avoid occur extremely opening when compressed air interruption or insufficient pressure in producing
The defect opening.A kind of present invention coolant injection rifle adopts inverse closing mode with Pneumatic vacuum valve, interrupts in compressed air
In the case of, valve is to close, and when needing evacuation, opening compressed air makes normally closed type Pneumatic vacuum valve open.Avoid
Workshop supplies QI-insufficiency, and compressed air interrupts causing the abnormal start-up of normally opened vacuum valve, causes damage.
In order to achieve the above object, the technical scheme is that：
A kind of coolant injection rifle normally closed type Pneumatic vacuum valve, including filling rifle gun body, described filling rifle gun body offers
Public port and compressed air mouth；Special-shaped rubber ring is provided with described public port, described Special-shaped rubber ring is connected with flower-drum；
So flower-drum be connected with Pneumatic vacuum valve body, holddown spring is installed, described pressure in described Pneumatic vacuum valve body
Tight spring is connected with piston, is provided with sealing ring between the internal face of described piston and Pneumatic vacuum valve body；Described work
Plunger beyond the Great Wall is connected with flower-drum.
It is provided with first between described Pneumatic vacuum valve body and filling rifle gun body and be connected sealing ring.
Described Pneumatic vacuum valve body and compressed air mouth junction are provided with ventilation sealing ring.
It is provided with second between plunger on described piston and flower-drum and be connected sealing ring.
The top of described Pneumatic vacuum valve body is provided with capping, and described capping, Pneumatic vacuum valve body, filling
Rifle gun body is passed through housing pin and is connected.
Beneficial effects of the present invention are：The present invention is used for substituting the Pneumatic vacuum open in usual of straight top type closing in pipette tips main body
Valve, it is to avoid the defect of abnormal start-up when compressed air interruption or insufficient pressure occurs in producing.Pneumatic vacuum valve of the present invention is adopted
Use inverse closing mode, that is, in the case of compressed air interruption, promote piston to move downward by holddown spring, valve is closed
Close, when needing evacuation, opening compressed air makes piston stroking upward, and Pneumatic vacuum valve is opened.Due to using normally closed type
Switch valve designs, and supplies QI-insufficiency in workshop, when compressed air is interrupted, vacuum valve is exactly in closed mode, it is to avoid cold-producing medium
The generation of the accident of splash.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the axonometric chart of Fig. 1.
Specific embodiment
As shown in Figure 1, 2, a kind of coolant injection rifle normally closed type Pneumatic vacuum valve of the present embodiment, including filling rifle gun body
11, described filling rifle gun body 11 offers public port 12 and compressed air mouth 13；Install on described public port 12
There is Special-shaped rubber ring 6, described Special-shaped rubber ring 6 is connected with flower-drum 5；So flower-drum 5 be connected with Pneumatic vacuum valve body 8, described
Pneumatic vacuum valve body 8 in holddown spring 7 is installed, described holddown spring 7 is connected with piston 2, described piston 2 and gas
Between the internal face of dynamic vacuum valve body 8, sealing ring 3 is installed；Plunger on described piston 2 is connected with flower-drum 5.
It is provided with first between described Pneumatic vacuum valve body 8 and filling rifle gun body 11 and be connected sealing ring 9.
Described Pneumatic vacuum valve body 8 and compressed air mouth 13 junction are provided with ventilation sealing ring 10.
It is provided with second between plunger on described piston 2 and flower-drum 5 and be connected sealing ring 4.
The top of described Pneumatic vacuum valve body 8 is provided with capping 1, and described capping 1, Pneumatic vacuum valve body 8,
Filling rifle gun body 11 is passed through housing pin and is connected.
Operation principle:Under holding state, the holddown spring 7 within Pneumatic vacuum valve body 8 promotes piston 2 to move downward,
Plunger compression Special-shaped rubber ring 6 on piston 2, by valve closing, when needing evacuation, opening compressed air makes work, on piston 2
OK, Pneumatic vacuum valve body 8 is opened.
The Pneumatic vacuum valve of the present embodiment adopts inverse closing mode, that is, in the case of compressed air interruption, by pressure
Tight spring promotes piston to move downward, and by valve closing, when needing evacuation, opening compressed air makes piston stroking upward, pneumatic
Vacuum valve is opened.Switch valve due to using normally closed type designs, and supplies QI-insufficiency in workshop, when compressed air is interrupted, vacuum
Valve is exactly in closed mode, it is to avoid the generation of the accident of cold-producing medium splash.
Claims (5)
1. a kind of coolant injection rifle normally closed type Pneumatic vacuum valve, including filling rifle gun body（11）, described filling rifle gun body
（11）On offer public port（12）With compressed air mouth（13）；It is characterized in that：Described public port（12）Upper installation
There is Special-shaped rubber ring（6）, described Special-shaped rubber ring（6）With flower-drum（5）It is connected；So flower-drum（5）With Pneumatic vacuum valve body（8）
Connected, described Pneumatic vacuum valve body（8）Holddown spring is inside installed（7）, described holddown spring（7）With piston（2）Phase
Even, described piston（2）With Pneumatic vacuum valve body（8）Internal face between sealing ring is installed（3）；Described piston（2）
On plunger and flower-drum（5）It is connected.
2. as claimed in claim 1 a kind of coolant injection rifle with normally closed type Pneumatic vacuum valve it is characterised in that：Described is pneumatic
Vacuum valve body（8）With filling rifle gun body（11）Between the first connection sealing ring is installed（9）.
3. as claimed in claim 1 a kind of coolant injection rifle with normally closed type Pneumatic vacuum valve it is characterised in that：Described is pneumatic
Vacuum valve body（8）With compressed air mouth（13）Junction is provided with ventilation sealing ring（10）.
4. as claimed in claim 1 a kind of coolant injection rifle with normally closed type Pneumatic vacuum valve it is characterised in that：Described piston
（2）On plunger and flower-drum（5）Between the second connection sealing ring is installed（4）.
5. as claimed in claim 1 a kind of coolant injection rifle with normally closed type Pneumatic vacuum valve it is characterised in that：Described is pneumatic
Vacuum valve body（8）Top capping is installed（1）, and described capping（1）, Pneumatic vacuum valve body（8）, filling rifle gun body
（11）It is connected by housing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095475.2A CN106439179A (en) | 2016-02-22 | 2016-02-22 | Normally-closed type pneumatic vacuum valve for refrigerant filling gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095475.2A CN106439179A (en) | 2016-02-22 | 2016-02-22 | Normally-closed type pneumatic vacuum valve for refrigerant filling gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106439179A true CN106439179A (en) | 2017-02-22 |
Family
ID=58183642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610095475.2A Pending CN106439179A (en) | 2016-02-22 | 2016-02-22 | Normally-closed type pneumatic vacuum valve for refrigerant filling gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106439179A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5139049A (en) * | 1990-11-15 | 1992-08-18 | Aeroquip Corporation | Refrigeration system service adapter |
| CN2556574Y (en) * | 2002-06-18 | 2003-06-18 | 成都东方仪器厂 | Refrigerant-charging tool |
| CN101231051A (en) * | 2007-01-26 | 2008-07-30 | 乐金电子(天津)电器有限公司 | Fluorine-infusing technique interface component of indoor machine of air conditioner |
| CN202630540U (en) * | 2012-05-25 | 2012-12-26 | 爱发科东方真空(成都)有限公司 | Refrigerant filling gun |
| CN204923610U (en) * | 2015-07-30 | 2015-12-30 | 常熟市捷程自动化设备有限公司 | Refrigerant fills notes machine and fills notes rifle head |
| CN205559944U (en) * | 2016-02-22 | 2016-09-07 | 绍兴西爱西尔数控科技有限公司 | Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle |
-
2016
- 2016-02-22 CN CN201610095475.2A patent/CN106439179A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5139049A (en) * | 1990-11-15 | 1992-08-18 | Aeroquip Corporation | Refrigeration system service adapter |
| CN2556574Y (en) * | 2002-06-18 | 2003-06-18 | 成都东方仪器厂 | Refrigerant-charging tool |
| CN101231051A (en) * | 2007-01-26 | 2008-07-30 | 乐金电子(天津)电器有限公司 | Fluorine-infusing technique interface component of indoor machine of air conditioner |
| CN202630540U (en) * | 2012-05-25 | 2012-12-26 | 爱发科东方真空(成都)有限公司 | Refrigerant filling gun |
| CN204923610U (en) * | 2015-07-30 | 2015-12-30 | 常熟市捷程自动化设备有限公司 | Refrigerant fills notes machine and fills notes rifle head |
| CN205559944U (en) * | 2016-02-22 | 2016-09-07 | 绍兴西爱西尔数控科技有限公司 | Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |