CN205559944U - Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle - Google Patents
Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle Download PDFInfo
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- CN205559944U CN205559944U CN201620132293.3U CN201620132293U CN205559944U CN 205559944 U CN205559944 U CN 205559944U CN 201620132293 U CN201620132293 U CN 201620132293U CN 205559944 U CN205559944 U CN 205559944U
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- vacuum valve
- pneumatic vacuum
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Abstract
The utility model discloses a refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle, annotate the rifle body including filling, fill to annotate and has seted up common port and compressed air mouth on the rifle body, common port on install heterotypic rubber ring, heterotypic rubber ring and flower -drum link to each other, so flower -drum and pneumatic vacuum valve main part link to each other, pneumatic vacuum valve main part in install pressure spring, pressure spring and piston link to each other, the internal face of piston and pneumatic vacuum valve main part between install the sealing washer, the piston on plunger and flower -drum link to each other. The utility model is used for direct -pushing confined pneumatic vacuum valve open in usual in the substituting rifle head main part, the defect of opening unusually when avoiding compressed air interrupt or insufficient pressure appearing in production, avoided the workshop air feed not enough, compressed air suspends arousing and normally opens opening unusually of vacuum valve, causes the loss.
Description
Technical field
This utility model relates to a kind of coolant injection rifle normally closed type Pneumatic vacuum valve.
Background technology
In refrigeration production field, need the refrigeration plant evacuation such as air-conditioner, electric refrigerator and charging refrigerant.Industrialized production is to carry out accurate filling by the refrigerant filling machine of specialty, on the filled rifle being connected with electric refrigerator, 2 valves are installed, one is vacuum valve, another is charging valve, vacuum valve is connected with the vacuum pump within refrigerant filling machine, and charging valve is connected with the refrigerant line system within filled machine.Generally before filled coolant, first open the vacuum valve on rifle head, to electric refrigerator evacuation, after vacuum is qualified, closes vacuum valve, then open charging valve, carry out coolant injection.
Vacuum valve is generally divided into two kinds, and one is solenoid vacuum valve, and another kind is Pneumatic vacuum valve.Both compare, and solenoid vacuum valve quick action, response performance is good；And the feature of Pneumatic vacuum valve to be valve opening diameter big, evacuate efficiency more slightly higher than solenoid vacuum valve, volume can be made less.
It is open in usual for filling Pneumatic vacuum valve conventional on rifle, i.e. need to use compressed air directly to push up method to close, when the piston of Pneumatic vacuum valve is passed through compressed air, piston rod withstands vacuum valve nozzle, make vacuum loop close, be always maintained at compressed air time i.e. usually and supply to Pneumatic vacuum valve, to ensure that it is closed by force, and when evacuation, compressed air turns off.Problem existing for this way is, during coolant injection, compressed air is interrupted suddenly or during voltage supply deficiency, Pneumatic vacuum valve will be caused to open, the coolant of high pressure will be directly in vacuum pump and loop thereof, damaging vacuum pump and vacuum transducer, time serious, the cold-producing medium of splash causes the cold injury of personnel.
Utility model content
The purpose of this utility model is to provide a kind of coolant injection rifle normally closed type Pneumatic vacuum valve.For substituting the Pneumatic vacuum valve open in usual that on rifle head main body, straight top type is closed, it is to avoid the defect of abnormal start-up when compressed air interruption or insufficient pressure occur in producing.This utility model one coolant injection rifle Pneumatic vacuum valve uses inverse closing mode, and i.e. in the case of compressed air is interrupted, valve is to close, and when needs evacuation, opens compressed air and makes normally closed type Pneumatic vacuum valve open.Avoid workshop to cause the abnormal start-up of normally opened vacuum valve for QI-insufficiency, compressed air interruption, cause damage.
In order to achieve the above object, the technical solution of the utility model is:
A kind of coolant injection rifle normally closed type Pneumatic vacuum valve, including filled rifle gun body, described filled rifle gun body offers public port and compressed air mouth；Being provided with Special-shaped rubber ring on 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 in described Pneumatic vacuum valve body, described holddown spring is connected with piston, is provided with sealing ring between the internal face of described piston and Pneumatic vacuum valve body；The described plunger on piston is connected with flower-drum.
It is provided with first between described Pneumatic vacuum valve body with filled rifle gun body and is connected sealing ring.
Described Pneumatic vacuum valve body and compressed air mouth junction are provided with ventilation sealing ring.
The described plunger on piston and be provided with second between 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, fills rifle gun body and be connected by housing pin.
The beneficial effects of the utility model are: this utility model is for substituting the Pneumatic vacuum valve open in usual that on rifle head main body, straight top type is closed, it is to avoid the defect of abnormal start-up when occurring compressed air interruption or insufficient pressure in producing.This utility model Pneumatic vacuum valve uses inverse closing mode, i.e. in the case of compressed air is interrupted, promotes piston to move downward by holddown spring, by valve closing, when needs evacuation, opens compressed air and make piston stroking upward, Pneumatic vacuum valve open.Design owing to using the switch valve of normally closed type, in workshop for QI-insufficiency, 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.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
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 filled rifle gun body 11, described filled rifle gun body 11 offers public port 12 and compressed air mouth 13；Being provided with Special-shaped rubber ring 6 on described public port 12, described Special-shaped rubber ring 6 is connected with flower-drum 5；So flower-drum 5 be connected with Pneumatic vacuum valve body 8, holddown spring 7 is installed in described Pneumatic vacuum valve body 8, described holddown spring 7 is connected with piston 2, is provided with sealing ring 3 between described piston 2 and the internal face of Pneumatic vacuum valve body 8；The described plunger on piston 2 is connected with flower-drum 5.
It is provided with first between described Pneumatic vacuum valve body 8 with filled rifle gun body 11 and is connected sealing ring 9.
Described Pneumatic vacuum valve body 8 and compressed air mouth 13 junction are provided with ventilation sealing ring 10.
The described plunger on piston 2 and be provided with second between 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, fills rifle gun body 11 and be connected by housing pin.
Operation principle: under holding state, the holddown spring 7 within Pneumatic vacuum valve body 8 promotes piston 2 to move downward, and the plunger on piston 2 compresses Special-shaped rubber ring 6, by valve closing, when needs evacuation, open compressed air and make to live, piston 2 is up, and Pneumatic vacuum valve body 8 is opened.
The Pneumatic vacuum valve of the present embodiment uses inverse closing mode, i.e. in the case of compressed air is interrupted, promotes piston to move downward by holddown spring, by valve closing, when needs evacuation, opens compressed air and make piston stroking upward, Pneumatic vacuum valve open.Design owing to using the switch valve of normally closed type, in workshop for QI-insufficiency, 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 coolant injection rifle normally closed type Pneumatic vacuum valve, including filled rifle gun body (11), described filled rifle gun body (11) offers public port (12) and compressed air mouth (13)；It is characterized in that: be provided with Special-shaped rubber ring (6) on described public port (12), described Special-shaped rubber ring (6) is connected with flower-drum (5)；So flower-drum (5) be connected with Pneumatic vacuum valve body (8), in described Pneumatic vacuum valve body (8), holddown spring (7) is installed, described holddown spring (7) is connected with piston (2), is provided with sealing ring (3) between described piston (2) and the internal face of Pneumatic vacuum valve body (8)；The described plunger on piston (2) is connected with flower-drum (5).
2. a kind of coolant injection rifle normally closed type Pneumatic vacuum valve as claimed in claim 1, it is characterised in that: it is provided with first between described Pneumatic vacuum valve body (8) with filled rifle gun body (11) and is connected sealing ring (9).
3. a kind of coolant injection rifle normally closed type Pneumatic vacuum valve as claimed in claim 1, it is characterised in that: described Pneumatic vacuum valve body (8) and compressed air mouth (13) junction are provided with ventilation sealing ring (10).
4. coolant injection rifle normally closed type Pneumatic vacuum valve as claimed in claim 1 a kind of, it is characterised in that: the described plunger on piston (2) and be provided with second between flower-drum (5) and be connected sealing ring (4).
5. a kind of coolant injection rifle normally closed type Pneumatic vacuum valve as claimed in claim 1, it is characterized in that: the top of described Pneumatic vacuum valve body (8) is provided with capping (1), and described capping (1), Pneumatic vacuum valve body (8), fill rifle gun body (11) and be connected by housing pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620132293.3U CN205559944U (en) | 2016-02-22 | 2016-02-22 | Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620132293.3U CN205559944U (en) | 2016-02-22 | 2016-02-22 | Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559944U true CN205559944U (en) | 2016-09-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620132293.3U Active CN205559944U (en) | 2016-02-22 | 2016-02-22 | Refrigerant fills annotates pneumatic vacuum valve of normal close formula for rifle |
Country Status (1)
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| CN (1) | CN205559944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439179A (en) * | 2016-02-22 | 2017-02-22 | 绍兴西爱西尔数控科技有限公司 | Normally-closed type pneumatic vacuum valve for refrigerant filling gun |
-
2016
- 2016-02-22 CN CN201620132293.3U patent/CN205559944U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439179A (en) * | 2016-02-22 | 2017-02-22 | 绍兴西爱西尔数控科技有限公司 | Normally-closed type pneumatic vacuum valve for refrigerant filling gun |
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| GR01 | Patent grant |