CN208565573U - A kind of leakproof needle-valve - Google Patents
A kind of leakproof needle-valve Download PDFInfo
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- CN208565573U CN208565573U CN201821068584.6U CN201821068584U CN208565573U CN 208565573 U CN208565573 U CN 208565573U CN 201821068584 U CN201821068584 U CN 201821068584U CN 208565573 U CN208565573 U CN 208565573U
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- valve
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- leakproof
- valve body
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Abstract
The utility model creation provides a kind of leakproof needle-valve, including valve body, thimble, bonnet, valve inside, adapter tube and orifice plug, and the bonnet is threaded on connector；The syringe needle of the thimble is exposed at outside the connector, and is not contacted with connector；The valve inside is arranged in valve body, and one end that thimble passes through valve inside is equipped with gasket；The adapter tube is inserted into valve body lower end；The orifice plug corresponds to gasket and is arranged in adapter tube, and orifice plug is threaded on adapter tube.Compared with prior art, the utility model creation has the effect of controlling flow and leakproof, can application field it is extensive, prevented the defect of the wasting of resources and environmental pollution, also there is better resistance to pressure and sealing reliability, ensure that the life and health of staff is safe.
Description
Technical field
The invention belongs to valve field, more particularly, to a kind of leakproof needle-valve.
Background technique
Valve is for being opened and closed pipeline, control flow direction, the parameter (temperature, pressure and flow) of regulation and control pumped (conveying) medium
Pipeline fittings.According to its function, shut-off valve, check-valves, regulating valve etc. can be divided into.
Valve is the control unit in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents adverse current, pressure stabilizing, shunting
Or the functions such as overflow pressure relief.For the valve of fluid control systems, from simplest shut-off valve to extremely complex robot control system(RCS)
Used in various valves, kind and specification are quite various.
Mainly application is accurately to control the flow that gas is imported into vacuum tank to needle-valve.When in use, common due to old
Change and inside valve inside damage, cause material leakage and needle-valve are whole to discard, largely cause unnecessary waste.Valve
The leakproofness of door is the technical performance index of valve most always, and leakage will cause boring loss, pollutes environment, can also make when serious
At accident.For inflammable and explosive, toxic or have the medium of radiation, reveal even more unallowable, thus must have can for valve
The sealing performance leaned on.
Summary of the invention
In view of this, the invention is intended to overcome above-mentioned defect existing in the prior art, a kind of leakproof needle-valve is proposed.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of leakproof needle-valve, including valve body, thimble, bonnet, valve inside, adapter tube and orifice plug, the bonnet are threadedly coupled
On connector；The syringe needle of the thimble is exposed at outside the connector, and is not contacted with connector；The valve inside is arranged in valve body
Interior, one end that thimble passes through valve inside is equipped with gasket；The adapter tube is inserted into valve body lower end；The orifice plug corresponds to gasket
It is arranged in adapter tube, orifice plug is threaded on adapter tube.
Further, it is provided with small washer in the valve body connector, between connector and syringe needle.
Further, the lower end at the valve body connector position is provided with large washer, between connector lower end and bonnet.
Further, for hollow cylinder, it is provided with several pillars, each branch towards gasket side to the orifice plug
Column is uniformly arranged centered on the central axes of orifice plug.
Further, the pillar on the orifice plug is three.
Further, the valve body, thimble and bonnet are manufactured using C3771 copper rod.
Compared with the existing technology, the invention has the advantage that
A kind of leakproof needle-valve of the present invention, the orifice plug are hollow cylinder, and gasket side is provided with number
A pillar, each pillar are uniformly arranged centered on the central axes of orifice plug.The position of adjusting orifice plug can be passed through when in use
It sets, to limit the open degree of valve inside, increases the effect of flow in application valve body.It allows needle-valve from simple switching function, sends out
Exhibition is with accurately control effect.Valve inside can also be effectively protected, prevent from being caused to leak by external force is excessive, increase
The service life of valve inside and entire needle-valve.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is the internal structure cross-sectional view of the invention；
Fig. 2 is the orifice plug internal structure cross-sectional view of the invention；
Fig. 3 is partial structure sectional view when the invention valve cock is closed；
Fig. 4 is partial structure sectional view when the invention valve cock is opened.
Description of symbols:
1- valve body, 2- thimble, 3- bonnet, 4- small washer, 5- spring, 6- large washer, 7-5V1 valve inside, 8- adapter tube, 9- section
Stream plug, 11- connector, 21- syringe needle, 71- mandril, 72- valve cock, 73- gasket, 91- pillar.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
A kind of leakproof needle-valve, as shown in Figure 1, include valve body 1, thimble 2, bonnet 3, small washer 4, large washer 6, valve inside 7,
Adapter tube 8 and orifice plug 9, the bonnet 3 are threaded on connector 11；The syringe needle 21 of the thimble 2 is exposed at the connector 11
Outside, and with connector 11 it does not contact；The spring 5 is arranged in valve body 1, and one end resists 21 lower end of syringe needle, and the other end resists valve
Core 7；；The valve inside 7 is arranged in valve body 1, and one end that thimble 2 passes through valve inside 7 is equipped with gasket 73, on the gasket 73
End face is in contact with 7 lower end surface of valve inside, realizes leakproofness；After thimble 2 moves down, gasket 73 is detached from and valve inside 7
Lower end surface contact after, realize conducting；The adapter tube 8 is inserted into 1 lower end of valve body；The corresponding gasket 73 of the orifice plug 9
It is arranged in adapter tube 8, orifice plug 9 is threaded on adapter tube 8.
The valve body 1, thimble 2 and bonnet 3 are manufactured using C3771 copper rod, are hot-forged performance and processing performance is excellent, have knot
Structure is compact, shunts the features such as uniform.
Needle-valve adds in air-conditioning, freezing, the application of refrigerating system when mainly repairing as service valve for vacuumizing
Refrigerant feeding etc., application amount is maximum especially in air-conditioning maintenance.During refrigerant charging, if the leakproofness effect of needle-valve
Bad, the leakage that refrigerant will occur causes to waste or even environmental pollution.It, can also shadow since some refrigerant has toxicity
Ring the health of maintenance personal.
In view of the above circumstances, the invention improves common needle-valve: inside the adapter tube 8, close to sealing
Pad 73 positions setting orifice plug 9.
In general, the use of needle-valve is first to screw from valve body by bonnet 3, and 11 position of connector is connected to
In equipment, one end that thimble 2 passes through valve inside 7 is equipped with gasket 73, which connects with 7 lower end surface of valve inside
Leakproofness is realized in touching；After thimble 2 moves down, gasket 73 is detached from after the contact of the lower end surface of valve inside 7, is realized
Conducting.When aging occurs for the reset spring of valve inside 7 itself, the open degree of valve inside 7 accordingly becomes smaller or even 73 nothing of gasket
Method resets, and when use reveals.The spring 5 can deformation occurs allows 21 stress of syringe needle in work, without additional to mandril 2
There is stress the reset spring for helping valve inside 7 itself to share the pressure functional of the pushing of thimble 2.The technology is those skilled in the art
Achievable conventional technical means, no longer excessively repeats.
Small washer 4 is provided on 1 connector of valve body；The lower end at 11 position of connector is provided with large washer 6.If
The abrasion at 1 interface position of syringe needle 2 and valve body can be prevented by setting small washer 4；Setting large washer 6 can prevent connector 11 from filling for a long time
It unloads in use, causing the abrasion of connection equipment interconnection mouth due to screwing tension.The small washer 4 and large washer 6 use T2M system
At T2M has softer physical property compared to general copper metal, and can effectively improve two kinds of washer performances prevents connecting portion
The effect of abrasion.
The adapter tube 8 is inserted into 1 lower end of valve body, is the feelings being detachably connected in the connection type of the valve body 1 and adapter tube 8
Under condition, the leakproofness in preoperation inspection valve inside 7 can be convenient, leakage of refrigerant during filling is avoided, to environment
Pollute in addition staff poisoning unfavorable result.The valve inside 7 is made of CR rubber, and CR rubber, which has, to be stablized
Chemical property, being particularly suitable for old refrigerant, (" old refrigerant " in the application refers to that R12 and two kinds of R22 have toxicity, to ozone layer
There is the refrigerant of destruction)
As Fig. 2 to as shown in figure 4, the orifice plug 9 be hollow cylinder, 73 side of gasket is provided with several pillars
91, each pillar 91 is uniformly arranged centered on the central axes of orifice plug 9.The orifice plug 9 is threaded on adapter tube 8.
Orifice plug 9 is set inside adapter tube 8, can adjust the upper and lower position of orifice plug 9 according to practically necessary open degree, pass through
Pillar 91 withstands gasket 73, limits the displacement of gasket 73 indirectly, increases the effect of flow in application valve body 1
Fruit, preventing internal pressure is more than that security value (s) causes to leak.When pillar 91 is arranged excessive, can play reduces in adapter tube 8 instead
The drawbacks of flow, therefore the pillar 91 on the orifice plug 9 is preferably arranged to three.Adding orifice plug 9 allows needle-valve from simple
Switching function develops as with accurately control effect.Since the controllability of open degree improves, the present invention also has reset valve
Accurate sexual function, can application field it is extensive.
In conclusion the invention have prevent using when occur refrigerant leak, be particularly suitable for having ozone layer
It destroys, has virose old refrigerant.By the internal protection to valve inside, avoid since the damage of valve inside allows whole needle-valve
Discarded drawback.With in the condition and use of preoperation inspection leakproofness in application valve body flow effect.With it is existing
Technology is compared, and is had control flow rate effects, docking operation simplicity, No leakage point, has been prevented the scarce of the wasting of resources and environmental pollution
It falls into, also there is better resistance to pressure and sealing reliability, ensure that the life and health safety of staff.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (6)
1. a kind of leakproof needle-valve, it is characterised in that: including valve body, thimble, bonnet, valve inside, adapter tube and orifice plug, the bonnet
It is threaded on connector；The syringe needle of the thimble is exposed at outside the connector, and is not contacted with connector；The valve inside setting
In valve body, one end that thimble passes through valve inside is equipped with gasket；Adapter tube is inserted into valve body lower end；The corresponding sealing of the orifice plug
Pad is arranged in adapter tube, and orifice plug is threaded on adapter tube.
2. a kind of leakproof needle-valve according to claim 1, it is characterised in that: be provided with pulvinulus on the connector of the valve body
Circle, between connector and syringe needle.
3. a kind of leakproof needle-valve according to claim 1, it is characterised in that: the lower end of the joint area of the valve body is arranged
There is large washer, between connector lower end and bonnet.
4. a kind of leakproof needle-valve according to claim 1, it is characterised in that: the orifice plug be hollow cylinder its towards close
Packing side is provided with several pillars, and each pillar is uniformly arranged centered on the central axes of orifice plug.
5. a kind of leakproof needle-valve according to claim 4, it is characterised in that: the pillar on the orifice plug is three.
6. a kind of leakproof needle-valve according to claim 1, it is characterised in that: the valve body, thimble and bonnet use C3771
Copper rod manufacture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068584.6U CN208565573U (en) | 2018-07-06 | 2018-07-06 | A kind of leakproof needle-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068584.6U CN208565573U (en) | 2018-07-06 | 2018-07-06 | A kind of leakproof needle-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208565573U true CN208565573U (en) | 2019-03-01 |
Family
ID=65491161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821068584.6U Active CN208565573U (en) | 2018-07-06 | 2018-07-06 | A kind of leakproof needle-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208565573U (en) |
-
2018
- 2018-07-06 CN CN201821068584.6U patent/CN208565573U/en active Active
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