CN208951382U - The capping of refrigerant tank opening valve - Google Patents

Abstract

The utility model relates to a kind of sealing structure of refrigerant tank opening valve, refrigerant tank opening valve includes valve body and capping, and valve body and capping are detachably connected；Valve body includes blocking interface, and sealing joint slot is equipped on blocking interface, and sealing joint slot is embedded with sealing joint circle；Capping includes sealing and lid end, lid end is connect with sealing, the internal diameter of sealing and the outer diameter for blocking interface, which are adapted, is set in sealing on closure interface, sealing at least extends at sealing joint circle, it is equipped in lid end for the through-hole across valve thimble, it is equipped with lid end seal groove on the inner sidewall of lid end, is embedded with lid end sealing ring on the seal groove of lid end.The utility model can prevent refrigerant from leaking from closure interface and lid end by the way that sealing joint circle and lid end sealing ring is respectively set on blocking interface and capping.

Description

The capping of refrigerant tank opening valve

Technical field

The utility model belongs to air-conditioning refrigerant filling device field, and in particular to a kind of closure of refrigerant tank opening valve Lid.

Background technique

The refrigerants such as ammonia, freon used in air-conditioning maintenance have very strong volatility, and sale when generallys use Pressure-resistant steel cylinder or the encapsulation of disposable aluminium pot.Pressure-resistant steel cylinder capacity is big, reusable, but it is filling when have risk, Common commercial networks do not have the filling condition in scene；The safe refrigerant of disposable aluminium pot packaging is good, facilitate sale and Transport, but need specific purpose tool to puncture aluminium pot and could connect when in use and fill fluorine pipe and fill fluorine or ammonia into air-conditioning, puncturing aluminium pot Slightly careless manipulation will result in leakage of refrigerant during agent pipe is filled in connection.

Existing refrigerant opening valve is equipped with sealing structure usually at sealing, and sealing structure is to be arranged on seal section There is sealing ring, one end of sealing ring is extend into valve through holes, the other end top to valve body end face of sealing ring, sealing ring setting On seal section be easy sliding, therefore by using capping by sealing ring fixing seal on valve body, but the sealing structure only Once sealing, sealing effect is bad, and since capping is to be threadedly coupled, capping is easy to happen loosening, when loosening, Sealing ring can then loosen, then influence sealing effect.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, the utility model provides a kind of refrigerant tank and opens The sealing structure of valve is opened, the refrigerant tank opening valve includes valve body and capping, and the valve body and capping are detachably connected； The valve body includes blocking interface, and sealing joint slot is equipped on blocking interface, and the sealing joint slot is embedded with sealing joint circle； The capping includes sealing and lid end, and the lid end is connect with sealing, and internal diameter and the closure of the sealing connect The outer diameter of mouth, which is adapted, is set in sealing on closure interface, and the sealing at least extends at sealing joint circle, is covering End is equipped with for the through-hole across valve thimble, and lid end seal groove, the lid end sealing are equipped on the inner sidewall of lid end Lid end sealing ring is embedded on slot.

Further, the closure interface is threadedly coupled with capping, is equipped on blocking interface for connecting with capping The external screw thread connect.

Further, the right end for blocking interface is arranged in the external screw thread for blocking interface.

Further, the internal screw thread for connecting with closure interface is equipped in the right end of sealing.

Further, the valve body further includes valve body, blocks interface and connect with valve body.

Further, the sealing joint slot is positioned close to valve body one end.

Further, the left end of the sealing extends top to valve body.

Further, the right side top to the right side of sealing for blocking interface.

The utility model has the beneficial effects that

1, it in the utility model, is sealed by the way that sealing joint circle and lid end are respectively set on blocking interface and capping Circle, wherein blocking interface, can prevented under the sealing function of sealing joint circle by sealing and the cooperation for blocking interface Only refrigerant is leaked from interface is blocked；In lid end, by the cooperation of the seal section of the through-hole and valve thimble of lid end, Under the sealing function of lid end sealing ring, it can prevent refrigerant from leaking from lid end.

It 2, is to be threadedly coupled with valve body due to the linkage section of valve thimble, being threadedly coupled has certain sealing function, system Cryogen leakage rate weakens, the end face of sealing function and closure interface of the refrigerant through capping and the threaded connection for blocking interface It compresses, weakens refrigerant leakage rate further, most the sealing afterwards through sealing joint circle, the leakage rate of refrigerant is passed through at this time It is multi-layer sealed without leaking into the external world, sealing effect is good.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of existing refrigerant tank；

Fig. 2 is the overall structure diagram of the refrigerant tank opening valve of the present embodiment；

Fig. 3 is the overall structure diagrammatic cross-section of the refrigerant tank opening valve of the present embodiment；

Fig. 4 is the detonation configuration diagrammatic cross-section of the refrigerant tank opening valve of the present embodiment；

Fig. 5 is the structural schematic diagram of nut set in the present embodiment；

Fig. 6 is the structural schematic diagram of valve body in the present embodiment；

Fig. 7 is the structural schematic diagram of capping in the present embodiment.

Description of symbols:

1. refrigerant tank；11. tank mouth edge；2. refrigerant tank opening valve；21. nut set；211. groove；22. valve body；221. Refrigerant tank interface；222. valve body；223. block interface；224. gasket seal；225. valve through holes；23. discharge conection； 231. delivery outlet；24. capping；241. sealing；242. lid ends；25. valve thimble；251. needle tip；252. light bar segment； 253. linkage section；254. seal section；255. tail end；26. valve handle；27. sealing joint circle；28. lid end sealing ring.

Specific embodiment

Below with reference to Fig. 1 to Fig. 7, the present invention will be further described, and for convenience of description, the direction of the present embodiment describes It is consistent with attached drawing direction.

The refrigerant tank 1 of the present embodiment is the prior art, and the present embodiment is opened with opening tank refrigerant tank when refrigerant tank 1 It opens valve 2 and is used as explanation.

Tank refrigerant tank opening valve 2 includes that nut covers 21, valve body 22, discharge conection 23, capping 24, valve thimble 25 With valve handle 26, wherein nut set 21 is threadedly coupled with valve body 22, and discharge conection 23 is inserted into valve body 22 and fixed company It connects in the side of valve body 22, discharge conection 23 is connect with efferent duct, and capping 24 is detachably connected with valve body 22, valve thimble 25 pass through capping 24 and valve body 22, and valve thimble 25 is threadedly coupled with valve body 22, and valve thimble 25 is for poking refrigerant tank 1 Tank mouth at aluminium layer (not shown) to opening refrigerant tank 1, valve handle 26 is connect with valve thimble 25, valve hand Wheel 26 is for facilitating valve thimble 25 to screw in back-out in valve body 22.

Nut set 21 is equipped with the internal screw thread for connecting with valve body 22, is equipped in nut set 21 close to 1 side of refrigerant tank Groove 211, the diameter that the internal diameter of groove 211 is greater than the tank mouth edge 11 of refrigerant tank 1 enable 211 sets of groove on tank mouth edge 11, The end of tank mouth edge 11 reaches 211 bottom of groove, and in the present embodiment, the internal diameter for stating groove 211 is slightly larger than the tank mouth of refrigerant tank 1 The diameter of edge 11, to improve the leakproofness and stability of nut set 21, the left end of nut set 21, groove 211 is arranged in groove 211 Depth be 4mm；To be further adapted with tank mouth edge 11, rounded corner is equipped in the bottom of groove 211.To enable manpower to hold Firmly nut covers 21 and can facilitate force, and 21 setting of nut set is thicker, and in the present embodiment, the integral thickness of nut set 21 is greater than 5mm, To improve usage comfort, preferably 13mm.Nut set 21 is cylindric, and for convenience of exerting a force, the outer diameter of nut set 21 is greater than tank The outer diameter of peristoma 11, further, the outer diameter of nut set 21 are greater than the outer diameter of valve body 22, apply entire 21 protrusion of nut set conveniently Power；It for increasing friction force, is easy to use, the outer rim bumps setting of nut set 21, in the present embodiment, the outer rim projection of nut set 21 There are multiple cleats, which is evenly distributed in the outer rim of nut set 21.

Valve body 22 from left to right successively includes refrigerant tank interface 221, valve body 222 and closure interface 223, wherein valve body 222 connect with refrigerant tank interface 221, block interface 223 and connect with valve body 222, are equipped in valve body 22 for across valve top The valve through holes 225 of needle 25, the shape of the valve through holes 225 and the shape of valve thimble 25 are adapted.Refrigerant tank interface 221 It is equipped with the external screw thread for connecting with nut set 21, the external thread length of refrigerant tank interface 221 is greater than the tank of refrigerant tank 1 The summation that external thread length and nut 21 thickness of set at mouthful place are added, on the inside of refrigerant tank interface 221 equipped with for refrigeration The internal screw thread that agent tank 1 connects is equipped with gasket seal 224 in refrigerant tank interface 221, and the gasket seal 224 is for preventing from making Cryogen leaks into the external world from refrigerant tank interface 221.The hole for being inserted into discharge conection 23 is equipped on valve body 222, it is defeated The delivery outlet 231 of pipe fitting 23 is connected to valve through holes 225 out；The outer diameter of the valve body 222 of existing tank refrigerant tank opening valve 2 Outer diameter than refrigerant tank interface 221 is small, and shorter, the about 40mm of entire valve body 22, it has not been convenient to which manpower is held, the present embodiment In, the outer diameter of valve body 222 is greater than the outer diameter of refrigerant tank interface 221 and blocks the outer diameter of interface 223, and the length of entire valve body 22 Degree is greater than 60mm, preferably 84mm.Block interface 223 is threadedly coupled with capping 24, closure interface 223 on equipped with for The external screw thread that capping 24 connects, in the present embodiment, the right end for blocking interface 223 is arranged in the external screw thread for blocking interface 223.? It blocks and is equipped with sealing joint slot close to 222 one end of valve body on interface 223, sealing joint circle 27 is embedded on sealing joint slot.

Capping 24 includes sealing 241 and lid end 242, wherein and the left end of capping 24 is arranged in sealing 241, Lid end 242 is connect with sealing 241.Capping 24 is threadedly coupled with interface 223 is blocked, correspondingly, on the right side of sealing 241 End is equipped with the internal screw thread for connecting with closure interface 223, and the internal diameter of sealing 241 and the outer diameter for blocking interface 223 are adapted, The left end of sealing 241 at least extends at sealing joint circle 27, and the left side of sealing 241 extends to valve body in the present embodiment At 222 right side, the right side top to the right side of sealing 241 of interface 223 is blocked.It is equipped in lid end 242 for wearing The through-hole for crossing valve thimble 25 is equipped with lid end seal groove, correspondingly, on the seal groove of lid end on the inner sidewall of lid end 242 Embedded with lid end sealing ring 28.

Valve thimble 25 from left to right successively includes needle tip 251, light bar segment 252, linkage section 253, seal section 254 and tail End 255, wherein the left end of valve thimble 25 is arranged in needle tip 251, and needle tip 251 is extend at refrigerant tank interface 221, The aluminium layer at the tank mouth of refrigerant tank 1 is punctured realization and opens at this time, and the aperture at the corresponding needle tip 251 of valve through holes 225 is big In the diameter of needle tip 251, refrigerant is enable to be passed into delivery outlet 231 from valve through holes 225；Light bar segment 252 has limit Effect, when needle tip 251 is at refrigerant tank interface 221, the hole wall of the left end bearing against valve through-hole 225 of light bar segment 252, Prevent needle tip 251 from moving on；253 diameter of linkage section is greater than the diameter of light bar segment 252, and the right end of linkage section 253, which is equipped with, to be used In the external screw thread being threadedly coupled with valve body 22, correspondingly, corresponding to the work being threadedly coupled with linkage section 253 in valve through holes 225 Internal screw thread is equipped in dynamic stroke；The diameter of seal section 254 and the aperture of lid end 242 are adapted, and cover seal section 254 corresponding It holds and forms sealing at sealing ring 28；The right end of valve thimble 25 is arranged in tail end 255, and tail end 255 is inserted into valve handle 26 Form tight fit.

It should be noted that since existing refrigerant opening valve is equipped with sealing structure, sealing knot usually at sealing Structure be sealing ring is arranged on seal section 254, one end of sealing ring is extend into valve through holes 225, sealing ring it is another 22 end face of valve body is arrived on end top, and sealing ring, which is arranged on seal section 254, is easy sliding, therefore by using capping 24 by sealing ring Fixing seal is on valve body 22, but the sealing structure only has once sealing, and sealing effect is bad, and capping 24 is screw thread company It connects, capping 24 is easy to happen loosening, and when loosening, sealing ring can then loosen, then influences sealing effect.If sealing ring is embedding Enter onto seal section 254, then will affect the screw thread setting of linkage section 253 and the screw thread setting of entire valve through holes 225, influence Movement of the valve thimble 25 in valve body 22 is unreasonable.

In the present embodiment, by being equipped with lid end sealing ring 28, at this time lid end sealing ring 28 in the lid end 242 of capping 24 For stationary state, lid end sealing ring 28 is not moved in valve body 22 by entire valve thimble 25 to be influenced, without to valve top The structure of needle 25, which is made, to be changed, and only needs capping 24 that the seal section 254 that lid end sealing ring 28 is used to adapt to valve thimble 25 is arranged, when When seal section 254 is through lid end 242, lid end sealing ring 28 forms seal section 254 and seals, and refrigerant is not easy from lid at this time It is leaked out in the through-hole of end 242；Further, to reinforce sealing effect, sealing joint circle is equipped on blocking interface 223 27, sealing is realized by capping 24 and the cooperation for blocking interface 223, then can prevent refrigerant from closure interface 223 and block It is overflowed in the junction of lid 24.

Before carrying out opening refrigerant tank 1, the needle tip 251 of valve thimble 25 falls back on the right end of refrigerant tank interface 221, Aluminium layer at the tank mouth of refrigerant tank 1 is intact sealing state.When needing to open refrigerant tank, the refrigerant tank of opening valve is connect Mouth 221 is threadedly coupled with the external screw joint at the tank mouth of refrigerant tank 1, and nut set 21 is toward close to screw thread rotation at refrigerant tanks 1 Turn, until nut set 21 is tightened, entire opening valve is not easy to loosen and forms sealing at tank mouth at this time, then passes through rotary valve Valve thimble 25 is screwed into valve body 22 by door handwheel 26, until the hole wall of the top of light bar segment 252 to valve through holes 225 limits, then Needle tip 251 is screwed at refrigerant tank interface 221, and needle tip 251 pokes the aluminium layer at tank mouth during screw-in at this time, Refrigerant tank 1 is opened.Due to needing that refrigerant is passed into efferent duct, then changeover valve handwheel 26 exits needle tip 251 Until valve through holes 225 are connected to delivery outlet 231 and refrigerant is made to circulate, pushed up when final valve thimble 25 is exited to linkage section 253 To capping 24 sealing 241 when valve thimble 25 be limited.

In the refrigerant process of circulation, refrigerant gasket seal 224 and nut set 21 sealing function under, be not easy from It is leaked into the external world at tank mouth along nut set 21；Simultaneously as linkage section 253 is to be threadedly coupled with valve body 22, it is threadedly coupled tool There is certain sealing function, refrigerant leakage rate weakens, and refrigerant divides two-way to leak, wherein connecing all the way through capping 24 with closure The sealing function of the threaded connection of mouth 223 and the end face for blocking interface 223 compress, and subtract refrigerant leakage rate further Weak, most afterwards through sealing joint circle 27 sealing, the leakage rate of refrigerant is by multi-layer sealed without leaking into the external world at this time, separately Sealing is cooperatively formed by the through-hole of lid end sealing ring 28 and seal section 254 and lid end 242 all the way, is not easy refrigerant from envelope It is leaked into the external world in blanking cover 24.

The foregoing is merely the better embodiment of the utility model, the utility model is not limited to above-mentioned embodiment party Formula, there may be the structural modifications that part is small in implementation process, if various changes or modifications to the utility model are not The spirit and scope of the utility model are detached from, and are belonged within the scope of the claims and equivalents of the utility model, then originally Utility model is also intended to encompass these modification and variations.

Claims (8)

1. a kind of sealing structure of refrigerant tank opening valve, it is characterised in that: the refrigerant tank opening valve includes valve body and envelope Blanking cover, the valve body and capping are detachably connected；The valve body includes blocking interface, and sealing joint is equipped on blocking interface Slot, the sealing joint slot are embedded with sealing joint circle；The capping includes sealing and lid end, the lid end and sealing Portion's connection, the internal diameter of the sealing and the outer diameter for blocking interface, which are adapted, is set in sealing on closure interface, described close Envelope portion at least extends at sealing joint circle, is equipped in lid end for the through-hole across valve thimble, in the inside of lid end Wall is equipped with lid end seal groove, is embedded with lid end sealing ring on the seal groove of the lid end.

2. the sealing structure of refrigerant tank opening valve according to claim 1, it is characterised in that: the closure interface and envelope Blanking cover is threadedly coupled, and the external screw thread for connecting with capping is equipped on blocking interface.

3. the sealing structure of refrigerant tank opening valve according to claim 2, it is characterised in that: described to block the outer of interface The right end for blocking interface is arranged in screw thread.

4. the sealing structure of refrigerant tank opening valve according to claim 3, it is characterised in that: set in the right end of sealing There is the internal screw thread for connecting with closure interface.

5. the sealing structure of refrigerant tank opening valve according to any one of claim 1 to 4, it is characterised in that: described Valve body further includes valve body, blocks interface and connect with valve body.

6. the sealing structure of refrigerant tank opening valve according to claim 5, it is characterised in that: the sealing joint slot is set It sets close to valve body one end.

7. the sealing structure of refrigerant tank opening valve according to claim 6, it is characterised in that: the left end of the sealing Extend top and arrives valve body.

8. the sealing structure of refrigerant tank opening valve according to claim 7, it is characterised in that: the right side for blocking interface End face top to the right side of sealing.