CN2379459Y - Non filling type valve for filling refrigerant into bottle - Google Patents
Non filling type valve for filling refrigerant into bottle Download PDFInfo
- Publication number
- CN2379459Y CN2379459Y CN 98250798 CN98250798U CN2379459Y CN 2379459 Y CN2379459 Y CN 2379459Y CN 98250798 CN98250798 CN 98250798 CN 98250798 U CN98250798 U CN 98250798U CN 2379459 Y CN2379459 Y CN 2379459Y
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- China
- Prior art keywords
- valve
- spool
- refrigerant
- valve body
- air passage
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- Expired - Fee Related
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Abstract
The utility model relates to a non filling type valve for filling refrigerant into bottles. One side of a valve body is provided with a valve nozzle. In an assembly in the valve, a valve core and a guide rod are integrated into an integral body, and the periphery of the valve core forms a concave-convex structure, wherein, the convex part is in tight fit with the inner wall of the valve body and the concave part is used as an air passage. The sealing surface of the valve core is provided with a seal ring. The lower end of a valve rod is provided with a seal element for a passage of the valve nozzle. Compared with the prior art, the utility model overcomes the defects that a vacuum pumping issue on a steel cylinder can not be easily solved before the existing valves are filled with refrigerant, and a machining quality can not be easily ensured.
Description
The utility model belongs to a kind of valve, belongs to a kind of and the supporting use of refrigerant packing steel cylinder especially as the disposable cylinder valve that fills refrigerant.
Because safety factor, as the steel cylinder of packing refrigerant, country expressly provides that its valve all need adopt non-once-used filling valve, to stop repeated charging at present.Before the utility model is made, polytype valve is arranged both at home and abroad.Relatively being typically China Patent No. is 95216157.5 valves of being introduced, and its structure comprises valve body, valve internal component; Valve internal component is made of valve rod, spool, pilot bar.Valve body one side is provided with the valve nozzle that fills, puts refrigerant; Spool is arranged in valve body and valve nozzle passage intersection cavity.Before filling refrigerant, valve rod is backspin not, makes spool be positioned at the cavity top; Fill and finish, the backspin valve rod makes it spool roof fall spool chamber withstand on the valve seal mouth, reaches and closes purpose.During use, unscrew valve rod, at this moment, the bottle pressure is washed spool open makes refrigerant discharge from valve nozzle.But the shortcoming of this valve is: before (1) filled refrigerant, the steel cylinder problem that vacuumizes was difficult to solve; (2) crudy is difficult to guarantee.
The purpose of this utility model provides the later-model once-used filling valve for refrigerant packing bottle of a kind of structure.It is good that this valve not only has the repeated charging of preventing performance, and processing is simple, and reliable in quality can easily solve steel cylinder and vacuumize problem.
The purpose of this utility model reaches by following technical proposals:
The utility model is a kind of once-used filling valve for refrigerant packing bottle, comprises valve body, valve internal component, and valve body one side is provided with valve nozzle; Valve internal component is made of valve rod, spool, pilot bar, and its structural feature is:
1. spool and pilot bar are single piece, and the spool periphery is provided with air passage;
2. the valve rod lower end is provided with valve nozzle air passage sealing member.
The utility model also is provided with seal ring in the specific implementation on the sealing surface of spool;
The utility model in the specific implementation, the lower end with the spool junction on the valve interior wall is provided with interior reducing;
The utility model in the specific implementation, the spool periphery is the machicolated form structure, spool projection and valve interior wall flush fit, recess are air passage.
The utility model in the specific implementation, valve body lower end also can connect a valve seat, this valve seat is threaded with valve body, closing of junction is provided with spring wire in the chamber.
Compare advantage of the present utility model with known technology: the one, spool and pilot bar are single piece, the spool periphery is provided with air passage; The valve rod lower end is provided with valve nozzle air passage sealing member, and therefore having solved steel cylinder easily vacuumizes problem.The 2nd, crudy of the present utility model is reliably guaranteed behind the changing of design.The 3rd: after valve body lower end was provided with valve seat, the producer that produces valve only needed in advance valve seat to be given the producer that produces steel cylinder.Again valve body is screwed in valve seat later on and get final product, not only reduced manufacturer's trim assembling procedure, also guaranteed valve mass.
The utility model is described in further detail by embodiment below in conjunction with accompanying drawing:
Fig. 1 is vertical cut-away structure chart of an embodiment of the utility model;
Fig. 2 turn 90 degrees vertically cut-away structure chart of back for valve rod among the figure revolves;
Fig. 3 is the birds-eye view of spool among Fig. 2 (8).
Component names and sequence number are among Fig. 1-3:
3 sandwich of layers, 4 gaps 5, valve inner thread 1 threaded stem, 2 stem guiding holes
Interior reducing 6 seal rings 7 spools 8 valve body sealing surfaces 9
Valve seal boss 10 valve base sealing concave stations 11 valve seat negative threads 12 valve body outside threads 13
The outer groove 17 of welding table level 14 jump ring fixed orifices 15 jump rings 16 valve walls
Valve seat inner groovy 18 valve seats 19 seal rings 20 fixed links 21 valve nozzles 22
Air passage sealing member 23 boss 24 O type circles 25 valve bodies 26 reducing circles 27
Valve rod 28 sealing member marks 29 spool chambers 30 valve nozzle passages 31
Spool protuberance 32 o-ring grooves 33 spool pilot bars 34 air passages 35
Referring to Fig. 1.Fig. 1 shows vertically cuing open of embodiment of the utility model and shows structure.The present embodiment valve comprises valve body 26, valve seat 19, valve rod 28 and valve internal component four parts.
Valve internal component is made of valve rod 28, spool 8, pilot bar 34.Valve rod 28 threaded stems 2 are connected with valve inner thread 1, and threaded stem top is valve handle; The threaded stem bottom is provided with the groove of O type circle 25, and the groove bottom valve rod of O type circle 25 dwindles gradually, makes to form a gap 5 between valve rod 28 and the valve inwall, and gap 5 is an air passage; Be provided with pilot hole 3 in the middle of valve rod 28 bottoms, an outside side is provided with boss 24, and boss 24 is provided with pit, valve nozzle air passage sealing member 23 is embedded in the pit, fixed link 21 is a single piece with valve rod 28, and it is outstanding from sealing member 23 middle parts, plays fixing seals 23 (referring to Fig. 2).Valve rod can adopt metal piece, Plastic Parts etc.When adopting Plastic Parts, should sandwich of layers 4 be set in pilot hole 3 peripheries, sandwich of layers 4 is a metal piece, to guarantee valve reliability.Spool 8 is single piece (referring to Fig. 3) with pilot bar 34.Spool 8 is back taper (can certainly be spherical), and for guaranteeing disposable effect, present embodiment has also been set up a seal ring 7 on the sealing surface top of the back taper of spool 8.Seal ring 7 peripheries are the machicolated form structure, and spool protuberance 32 and valve body 26 inwall flush fits, recess are air passage 35 (seal ring also can adopt and not be cancavo-convex structure certainly, and adopts the mode of opening hole or fluting to reach the purpose of ventilation).Seal ring 7 is embedded in the o-ring groove 33.
The utility model in the specific implementation, valve body can be directly and the steel cylinder welding, also can be connected with steel cylinder by valve seat again.Present embodiment adopts the form of valve seat.At this moment, valve body 26 bottoms of valve nozzle below 22 are connected with the negative thread 12 of valve seat 19 through valve body outside thread 13, and the junction is provided with valve seal boss 10, and is corresponding, and valve seat 19 is provided with valve base sealing concave station 11, and sealing place is provided with seal ring 20.Valve body 26 outside threads are provided with outer groove 17, are provided with jump ring fixed orifice 15 in the outer groove 17.Have formed the closing of 18, two grooves of inner groovy on valve seat 19 inner threads jump ring steel wire 16 is set in the chamber, jump ring steel wire 16 1 ends insert in the jump ring fixed orifice 15.The purpose that jump ring steel wire 16 is set is that the valve body 26 that guarantee to screw in can not screw out in valve seat 19 again, thereby guarantees the globality of steel cylinder and valve and disposable.Valve seat 19 lower ends are provided with welding table level 14, and valve seat 19 is through welding table level 14 and steel cylinder welding.
The fitting process of this valve is:
1, valve seat 19 and steel cylinder welding;
2, seal ring 7 is embedded in the o-ring groove 33 of spool 8;
3, O type circle 25 is enclosed within the O shape circle groove of valve rod 28, valve nozzle air passage sealing member 23 embeds in the pit of valve rod 28 lower boss 24;
4, the pilot bar 34 with spool 8 inserts in the pilot hole 3 of valve rod 28, spool 8, valve rod are screwed in to the appropriate location (the last plane of threaded stem 2 flushes with the last plane of valve inner thread 1) behind the 28 insertion valve body chambeies, and make sealing member mark 29 aim at valve nozzle 22, then with 27 reducings of reducing circle.
5, seal ring 20 is inserted on the valve body 26, jump ring 16 inserts in jump ring fixed orifice 15 and the outer groove 17 of screw thread, again valve body 26 is screwed in valve seat 19.
The principle of work of the utility model valve roughly is like this:
A, when vacuumizing,,, vacuumize to open the passage of valve nozzle passage 31 and gap 5, spool air passage 35, valve seat air passage (among Fig. 1, Fig. 2 shown in the arrow) with valve rod rotation 45 degree.After finishing, again valve rod cycle (making the sealing member mark 29 on the valve handle aim at valve nozzle).
B, when filling refrigerant,,, carry out can to open the passage of valve nozzle passage 31 and gap 5, spool air passage 35, valve seat air passage (among Fig. 1, Fig. 2 shown in the arrow) again with valve rod rotation 45 degree.After the can, valve rod is screwed in, make spool cross valve interior wall reducing 6 and enter in the spool chamber 30, valve rod continues to screw in, and the sealing surface of spool 8 is contacted with valve body sealing surface 9, reaches sealing purpose.
C, when using, unscrew valve rod 28, at this moment, press in the steel cylinder wash spool 8 open after, refrigerant is discharged from valve seat air passage (Fig. 1, Fig. 2 shown in the arrow), spool chamber 30, spool air passage 35, gap 5 valve nozzle passages 31.
When D, repeated charging, when pressure enters the valve body chamber, because the effect of pressure, valve core sealed cover contacts with valve body sealing surface 9, and passage is sealed, and makes the person of filling can not reach the purpose of repeated charging.
Claims (5)
1, a kind of once-used filling valve for refrigerant packing bottle comprises valve body (26), valve internal component, and valve body (26) one sides are provided with valve nozzle (22); Valve internal component is made of valve rod (28), spool (8), pilot bar (34), it is characterized in that:
1. spool (8) and pilot bar (34) are single piece, and spool (8) periphery is provided with air passage (35);
2. valve rod (28) lower end is provided with the air passage sealing member (23) of valve nozzle (22).
2, once-used filling valve for refrigerant packing bottle according to claim 1 is characterized in that: also be provided with seal ring (7) on the sealing surface of spool (8).
3, once-used filling valve for refrigerant packing bottle according to claim 1 is characterized in that: the lower end with spool (8) junction on valve body (26) inwall is provided with interior reducing (6).
4, according to claim 1 or 2 or 3 described once-used filling valve for refrigerant packing bottle, it is characterized in that: spool (8) is peripheral to be the machicolated form structure, spool projection (32) and valve body (26) inwall flush fit, and recess is air passage (35).
5, once-used filling valve for refrigerant packing bottle according to claim 3 is characterized in that: valve body (26) lower end has connected a valve seat (19), and this valve seat (19) is threaded with valve body (26), and closing of junction is provided with spring wire (16) in the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98250798 CN2379459Y (en) | 1998-12-17 | 1998-12-17 | Non filling type valve for filling refrigerant into bottle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98250798 CN2379459Y (en) | 1998-12-17 | 1998-12-17 | Non filling type valve for filling refrigerant into bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2379459Y true CN2379459Y (en) | 2000-05-24 |
Family
ID=33995182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98250798 Expired - Fee Related CN2379459Y (en) | 1998-12-17 | 1998-12-17 | Non filling type valve for filling refrigerant into bottle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2379459Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025223A1 (en) * | 2006-08-27 | 2008-03-06 | Xieguo Zheng | A non-refillable valve for use in a cylinder |
-
1998
- 1998-12-17 CN CN 98250798 patent/CN2379459Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025223A1 (en) * | 2006-08-27 | 2008-03-06 | Xieguo Zheng | A non-refillable valve for use in a cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |