CN206299858U - Tee ball valve - Google Patents

Abstract

The utility model provides a kind of with simple structure, simple installation, with low cost, sealed reliable tee ball valve.It has valve body, and the draw-in groove that width is s, jump ring insertion draw-in groove are provided with the cap port periphery of a diameter of a；Cap port front end face to draw-in groove distance be t；Jump ring width is f, and thickness is x；Jump ring external diameter after embedded draw-in groove is b；Movable nut includes anterior endoporus and rear portion necking, and diameter of bore is c, and reentrant diameter is e；Step surface is formed between necking and endoporus；The seal groove of a diameter of d is provided with inner hole wall, the distance of step surface to seal groove is z；A≤e ＜ b≤c ＜ d, a+2f≤d, x≤s, z≤s+t；Sealing ring is located in seal groove；Movable spiro cap is mounted in cap port periphery, because the jump ring external diameter b in embedded draw-in groove is more than reentrant diameter e, prevents movable nut to move forward so as to depart from cap port；There is screw thread on endoporus between movable nut front end and seal groove.

Description

Tee ball valve

Technical field

The utility model is related to ball valve, is a kind of tee ball valve specifically.

Background technology

Tee ball valve common at present, referring to Fig. 1,2, it has valve body 1, and valve body has three ports for communicating, wherein A port is the cap port 11 of connection activity nut 2, and a port is the valve port 12 of mounting ball valve 5.

Movable nut 2 includes the necking 22 of anterior endoporus 21 and rear portion, and step surface 23 is formed between necking and endoporus.Cap Port is with the specific attachment structure of movable nut：For the installation of movable nut 2, generally require in cap port 11 by spiral shell Line one pressure cap 4 of secondary connection, the bulge loop 41 of pressure cap limits movable nut and moves forward so as to depart from cap port.But so, Increase an extra part pressure cap 4, increased manufacturing cost；And in order to pressure cap is loaded cap port 11, typically in pressure cap Endoporus is set to tighten portion with interior hexagonal, and stretching into the portion of tightening by outer hexagonal spanner screws pressure cap, so inevitable The fluid passage of tee ball valve can be polluted；In addition, the screw thread pair between pressure cap and cap port occurs risk of leakage.

Ball valve 5 generally comprises left diaphragm seal 51, valve ball 52, right diaphragm seal 53, valve seat 54, valve rod 55, handle 56.Valve port Attachment structure with ball valve is：Left diaphragm seal, valve ball, right diaphragm seal, valve seat are set gradually in valve pocket inside valve port 12 Left part, the left part 541 of valve seat stretches into valve pocket and is connected through a screw thread with valve pocket, the end face of valve port right-hand member be located at valve Valve seat right-hand member diameter contact outside chamber, is pressed on left diaphragm seal, valve ball, right diaphragm seal in valve pocket by left part 541.This Kind of structure, to the parts such as left diaphragm seal, valve ball, right diaphragm seal, valve pocket, the left part of valve seat valve pocket axial direction chi The requirement of very little, quality of fit is very high, very big to improve processing and assembly cost；If the size for having a parts goes wrong, Leakage problem just occurs, especially occurs and unreliable caused leakage is sealed between valve ball and left diaphragm seal, right diaphragm seal Problem.

This tee ball valve, valve seat cannot also be with the external hose of other water equipments（Such as the flexible pipe of water purifier）Quickly connect Connect.In order to be quickly connected with external hose, it is necessary to install a snap joint for extra purchase again on valve seat.Quickly connect Head belongs to prior art, but price is higher.Valve seat can be connected with external hose by snap joint.

Utility model content

The purpose of this utility model is to provide a kind of with simple structure, simple installation, with low cost, sealed reliable threeway Ball valve.

Tee ball valve described in the utility model, with valve body, valve body has three ports for communicating, one of port It is the cap port of connection activity nut, a port is the valve port of mounting ball valve；Cap port and the specific connection of movable nut Structure is：The draw-in groove that width is s, jump ring insertion draw-in groove are provided with the cap port periphery of a diameter of a；The front end face of cap port is arrived The distance of draw-in groove is t；Jump ring is f in the width of radial direction, is x in the thickness of axial direction；Outside jump ring after embedded draw-in groove Footpath is b；Movable nut includes the necking of anterior endoporus and rear portion, and diameter of bore is c, and reentrant diameter is e；Necking and endoporus it Between form step surface；The seal groove that a diameter of d, width are y is provided with inner hole wall, the distance of step surface to seal groove is z；A≤e ＜ b≤c ＜ d, a+2f≤d, x≤s, z≤s+t；Form in sealing contact with the front end face of cap port under external force Sealing ring is located in seal groove；Movable spiro cap is mounted in cap port periphery, because the jump ring external diameter b in embedded draw-in groove is more than contracting Mouth diameter e, prevents movable nut to move forward so as to depart from cap port；In between movable nut front end and seal groove There is internal thread on hole.

The beneficial effects of the utility model：The utility model has abandoned the conventional pressure cap being connected through a screw thread to movable screw Cap it is spacing, but realized to spacing, the simple structure of movable nut by a jump ring in cap port periphery, reduce into This, it also avoid polluting fluid passage when pressure cap is tightened using the tightening tool for stretching into pressure cap endoporus, while also disappearing Except the risk of leakage that the screw thread pair connection between pressure cap and cap port easily occurs.Step surface is to seal groove trailing flank in axle To on direction apart from z≤draw-in groove the width s+ caps port of axial direction front end face to draw-in groove front side wall apart from t, make When proper jump ring is contacted with step surface, seal groove trailing flank the rear portion of the front end face of cap port or with cap port before The concordant position of end surface, so, when exterior line is connected with this tee ball valve, exterior line is by interior with movable nut Screw thread coordinates, and the end face of exterior line can be pressed on sealing ring in the front end face of cap port, realizes reliable sealing.When close When in seal embedding sealing ring recess, sealing ring also limit displacement of the movable nut in axially direction, and compact conformation makes With conveniently.

Above-mentioned tee ball valve, c ＜ a+2f；x≤y.So, can further reduction activity nut size, reduce into This.

Above-mentioned tee ball valve, the rear portion of draw-in groove sets what limitation activity nut was continued to move to backward on the periphery of cap port Limiting stand, when sealing ring is not installed, movable nut can be moved axially between jump ring and limiting stand.It is spacing by setting Platform, limits moving range of the movable nut in axial direction so that this tee ball valve structure is compacter, reduces cost.Make It is further improvement, best c ＜ a+2f；x≤y；So, profile is more compact, with low cost；But now in order to not to jump ring Installation bring difficulty, best right angle setting during set assembling jump ring is first sleeved on jump ring outer at the front end face of cap port Zhou Shang, and cause that jump ring is located in seal groove, then jump ring is promoted backward by the instrument stretched between endoporus and cap port Mobile, movable nut can follow movement, jump ring is smoothly slipped into draw-in groove；And such tee ball valve has an advantage that, It is exactly after jump ring is installed in draw-in groove, it is impossible to removed from draw-in groove again, that is to say, that jump ring cannot depart from cap port periphery, when So activity nut also cannot just be removed（Depart from cap port periphery）, security when increased use, transport.

Above-mentioned tee ball valve, a ＜ e ＜ b ＜ c ＜ a+2f ＜ d, x≤y, x=s, z=s+t；Thickness≤the y of sealing ring.This Sample, while compact structure, movable nut is moved axially relative to cap port or is rotated about axis also more flexible.

Above-mentioned tee ball valve, the section of jump ring is circle, and the section of draw-in groove is arc.Arc-shaped slot section can reduce Cap port periphery stress concentration at draw-in groove, prevents fracture.

Above-mentioned tee ball valve, with round-corner transition between step surface and inner hole wall.Round-corner transition reduce step surface with it is interior The stress concentration of junction between hole wall, bearing capacity is big, prevents fracture.

Above-mentioned tee ball valve, valve port is with the attachment structure of ball valve：Set gradually in valve pocket inside valve port Left diaphragm seal, valve ball, right diaphragm seal, the left part of valve seat, the left part of valve seat are stretched into valve pocket and are connected through a screw thread with valve pocket, Cushion seal pad is provided between the end face and valve seat right-hand member of valve port right-hand member.Due to the end face and valve seat right-hand member of valve port right-hand member Between have cushion seal pad（It is not directly contacted with axial direction between the end face and valve seat right-hand member of valve port right-hand member）, so screwing in The length of the left part of valve pocket part valve seat can be adjusted freely as needed, not only be reduced close to left diaphragm seal, valve ball, the right side The requirement on machining accuracy of the parts such as mounting, valve seat, also reduces matching requirements, and enable to left diaphragm seal, valve ball, the right side close Reliable sealing is realized between mounting, left part of valve seat etc.；In addition, end face and valve seat of the cushion seal pad in valve port right-hand member Sealing function is also functioned between right-hand member, just in case the screw thread pair seal failure of ball valve, does not result in leakage problem, is added so as to play yet The effect of strong sealing.

Above-mentioned tee ball valve, be axially provided with the passage communicated with valve pocket inside valve seat O-ring seal and Resilient sleeve, resilient sleeve is jointly connected with the arc spring lamination for being looped around circumferential more than three and with same one end of each arc spring lamination Closed-loop；Each arc spring lamination has the claw on same circumference.O-ring seal and resilient sleeve are zero in snap joint Part, the utility model is applied to two main parts in snap joint in this valve seat, serves and external hose The purpose of quick connection.So, without the snap joint that purchasing price again is expensive, can also realize quickly being connected with external hose. When using, external hose is stretched into O-ring seal and resilient sleeve, and external hose is in sealing contact with the O-ring seal of periphery, while Each claw is connecing flexible pipe clamping and positioning radially outward under the elastic reaction of each arc spring lamination.

Brief description of the drawings

Fig. 1 is the sectional view of existing tee ball valve；

Fig. 2 is another sectional view of existing tee ball valve；

Fig. 3 is the sectional view of tee ball valve of the present utility model（Movable nut and jump ring contact condition）；

Fig. 4 is the sectional view of tee ball valve of the present utility model（Movable nut and limiting stand contact condition）；

Fig. 5 is the sectional view of tee ball valve of the present utility model；

Fig. 6 is cap port and movable nut partial enlarged drawing；

Fig. 7 is resilient sleeve stereogram.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and detailed description.

Referring to the tee ball valve shown in Fig. 3,4, with valve body 1, valve body has three ports for communicating, one of port It is the cap port 11 of connection activity nut 2, a port is the valve port 12 of mounting ball valve 5, and a port is external screw thread port 13。

Movable nut includes the necking 22 of anterior endoporus 21 and rear portion, and diameter of bore is c, and reentrant diameter is e；Necking with Step surface 23 is formed between endoporus；With round-corner transition between step surface and inner hole wall.

The section of jump ring 4 is the circle of a diameter of R, it is clear that jump ring 4 radial direction width for f=in axial direction Thickness is x=diameters R.Draw-in groove 111 is provided with the cap port periphery of a diameter of a, draw-in groove 111 is s in the width of axial direction>Directly Footpath R.Jump ring external diameter after embedded draw-in groove is b.

The front end face 112 of cap port arrives draw-in groove leading flank（Draw-in groove is close to the front end face of cap port with cap port periphery 112 intersection）Distance be t.

A diameter of d is provided with the inner hole wall of movable nut, is the seal groove 211 of y, step surface in axial direction width The trailing flank distance of 23 to seal groove is z；A ＜ e ＜ b ＜ c ＜ a+2f ＜ d, x ＜ s, z ＜ s+t；X ＜ y.

There is internal thread on endoporus between movable nut front end and seal groove.Sealing ring is located in seal groove, The width y of the thickness ＜ seal grooves of sealing ring.Movable spiro cap be mounted in cap port periphery, when exterior line by with movable screw Screw-internal thread fit on cap, the end face of exterior line can be pressed on sealing ring in the front end face of cap port, realize reliable close Envelope.Because the jump ring external diameter b in embedded draw-in groove is more than reentrant diameter e, movable nut is prevented to move forward so as to depart from cap end Mouthful.

The rear portion of draw-in groove sets the limiting stand 3 that limitation activity nut is continued to move to backward on the periphery of cap port.Referring to figure 4, when sealing ring is not installed, movable nut can be moved axially between jump ring and limiting stand.

Left diaphragm seal 51, valve ball 52, right diaphragm seal 53, a left side for valve seat 54 are set gradually in valve pocket inside valve port 12 End 541.Left diaphragm seal 51, valve ball 52, right diaphragm seal 53, valve seat 54, valve rod 55, handle 56 etc. constitute ball valve 5.Valve seat Left part is stretched into valve pocket and is connected through a screw thread with valve pocket, and the right-hand member 542 of valve seat is with diameter greater than left part 541, the right-hand member of valve seat 542 are located at outside valve pocket, and cushion seal pad 6 is provided between the end face 121 and valve seat right-hand member of valve port right-hand member.

O-ring seal 7 and resilient sleeve are axially from left to right provided with the passage communicated with valve pocket inside valve seat 8.Resilient sleeve 8 is jointly connected with the arc spring lamination 81 for being looped around circumferential 4 or more than 4 and with the right-hand member of each arc spring lamination Closed-loop 82；Circumferentially the adjacent arc spring lamination 81 in direction has gap 84 to the left end of arc spring lamination 81, and this structure is caused The left end of arc spring lamination 81 has certain elasticity in radial direction.Each arc spring lamination has the claw 83 on same circumference.

Claims (8)

1. tee ball valve, with valve body, valve body has three ports for communicating, and one of port is the cap of connection activity nut Port, a port is the valve port of mounting ball valve；It is characterized in that：Cap port is with the specific attachment structure of movable nut： The cap port periphery of a diameter of a is provided with the draw-in groove that width is s, jump ring insertion draw-in groove；The front end face of cap port to draw-in groove away from From being t；Jump ring is f in the width of radial direction, is x in the thickness of axial direction；Jump ring external diameter after embedded draw-in groove is b；It is living Dynamic nut includes the necking of anterior endoporus and rear portion, and diameter of bore is c, and reentrant diameter is e；Platform is formed between necking and endoporus Terrace；The seal groove that a diameter of d, width are y is provided with inner hole wall, the distance of step surface to seal groove is z；A≤e ＜ B≤c ＜ d, a+2f≤d, x≤s, z≤s+t；Sealing ring position in sealing contact is formed with the front end face of cap port under external force In in seal groove；Movable spiro cap is mounted in cap port periphery, because the jump ring external diameter b in embedded draw-in groove is more than reentrant diameter e, Movable nut is prevented to move forward so as to depart from cap port；Have on endoporus between movable nut front end and seal groove Internal thread.

2. tee ball valve as claimed in claim 1, it is characterized in that：C ＜ a+2f；x≤y.

3. tee ball valve as claimed in claim 1, it is characterized in that：The rear portion of draw-in groove sets limitation activity on the periphery of cap port The limiting stand that nut is continued to move to backward, when sealing ring is not installed, movable nut can be between jump ring and limiting stand axially It is mobile.

4. tee ball valve as claimed in claim 1, it is characterized in that：A ＜ e ＜ b ＜ c ＜ a+2f ＜ d, x≤y, x=s, z=s+t； Thickness≤the y of sealing ring.

5. tee ball valve as claimed in claim 1, it is characterized in that：The section of jump ring is circle, and the section of draw-in groove is arc.

6. tee ball valve as claimed in claim 1, it is characterized in that：With round-corner transition between step surface and inner hole wall.

7. tee ball valve as claimed in claim 1, it is characterized in that：Valve port is with the attachment structure of ball valve：In valve port Left diaphragm seal, valve ball, right diaphragm seal, the left part of valve seat are set gradually in the valve pocket in portion, valve pocket is stretched into simultaneously in the left part of valve seat It is connected through a screw thread with valve pocket, cushion seal pad is provided between the end face and valve seat right-hand member of valve port right-hand member.

8. tee ball valve as claimed in claim 7, it is characterized in that：In the passage communicated with valve pocket inside valve seat axially Be provided with O-ring seal and resilient sleeve, resilient sleeve have the arc spring lamination that is looped around circumferential more than three and with each arc bullet The closed-loop that same one end of piece connects jointly；Each arc spring lamination has the claw on same circumference.