CN2821321Y

CN2821321Y - Novel fluorine lined three-way ball valve

Info

Publication number: CN2821321Y
Application number: CN 200520107319
Authority: CN
Inventors: 朱孝有
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-24
Filing date: 2005-05-24
Publication date: 2006-09-27
Anticipated expiration: 2015-05-24

Abstract

The utility model relates to a novel fluorine lined three-way ball valve. A T-shaped three-way flow passage (11) is arranged in a valve cover (3) and a valve body (1) which are connected into one body; the junction part of the three-way flow passage (11) is provided with a cavity body (12); a ball body (21) on the lower part of the valve core (2) is arranged in the cavity body (12); T-shaped three-way hole (23) is opened on the ball body (21); an inner cavity of the valve, which directly contacts the media of a pipeline, is provided with a fluoroplastic layer (4); between the ball body and the cavity body, three annular sealing rings (13, 14, 15) are respectively arranged outside three inner openings of the three-way flow passage; the valve body, which corresponds to a vertical flow passage (111), is provided with a sealing hole (18); an adjustable sealing ring (16) is inserted in the sealing hole (18). Due to the adoption of the unique structure of the four sealing rings, the reliable and good sealing performance can be ensured when the ball body is rotated to any direction.

Description

Novel lining fluorine tee ball valve

Technical field

The utility model relates to a kind of valve, particularly a kind of novel lining fluorine tee ball valve of good seal performance.

Background technique

Lining fluorine tee ball valve in the market, Fig. 1 is that structural representation cuts open in its vertical office, be provided with valve body 1, valve gap 3 and spool 2, be shaped on T shape threeway runner 11 in valve, wherein two runners are to be formed in the valve body 1, and another runner is formed in the valve gap 3, link together by fastening connection piece between valve gap 3 and the valve body 1, these three runners are joined together to form described threeway runner 11.Intersection at threeway runner 11 is shaped on cavity 12, the spheroid 21 of spool 2 bottoms places in the described cavity 12, on spheroid 21, can have T shape three through holes 23 with the position that described threeway runner 11 is connected, be equipped with fluoroplastics layer 4 as lining with valve cavity that the pipeline medium directly contacts, two straight-through runners 112 at described threeway runner 11, on 113 internal orifices, be respectively arranged with two O-

ring seals

13,14, these O-

ring seal

13,14 inner surfaces and spheroid 21 are close together, and its outer surface and cavity 12 surfaces are close together, and any sealed member is not set on the internal orifice of vertical run, so, have poorly sealed defective, so can cause serious leakage, and exist the switch resistance big, defective such as working life is short.

Summary of the invention

The utility model has overcome the poorly sealed shortcoming of lining fluorine tee ball valve in the prior art, and a kind of novel lining fluorine tee ball valve of good seal performance is provided.

In order to achieve the above object, a kind of novel lining fluorine tee ball valve of the present utility model, be provided with valve body, valve gap and spool, in valve gap that links together and valve body, be shaped on T type threeway runner, intersection at the threeway runner is shaped on cavity, the spheroid of spool bottom places in the described cavity, on spheroid, can have T shape three through holes with the position that described threeway runner is connected, be provided with fluoroplastics layer with valve cavity that the pipeline medium directly contacts, between spheroid and cavity, three internal orifice outsides of threeway runner are respectively arranged with three O-ring seals, have closed hole on the valve body relative with vertical run, insert with spherome surface in the sealing hole contacted, the adjustable seal ring of one of salable three through holes is provided with the retention mechanism that can inwardly be fixed adjustable seal ring outside adjustable seal ring.

A straight-through runner in the threeway runner can be formed on the valve gap, and valve gap and valve body bolt are together.

Described O-ring seal can be arranged in the outer circular trough of threeway runner internal orifice, and internal surface is and the contacted sphere annular surface of spherome surface.

The inner surface of adjustable seal ring be can with the contacted surface of spherome surface, the outside is shaped on groove, and internal thread is arranged in the closed hole, and the inner of threaded fastener is inserted in the groove of adjustable seal ring, the middle part of threaded fastener is shaped on outside thread, with the internal thread formation screw-thread fit in the closed hole.

Can be shaped on the flanging of outside bending in the outer end of adjustable seal ring, closed hole forms table top in this flanging place enlarged-diameter, in expanded hole, be shaped on internal thread, flanging is stuck on this table top, and the middle part of adjustable seal ring is shaped on outside thread, with the internal thread formation screw-thread fit in the expanded hole.

On spool top can be valve rod, and valve rod stretches out from the valve opening of valve body upper end, and a sealing mechanism is set between valve rod and valve body.The structure of described axle sealing mechanism is: in the middle of described valve opening tightens, have little down the filler in big platform shape hole contain, valve rod passes the aperture that filler is contained the bottom, be filled with filler in macropore in described filler is contained and the cavity between the valve rod, the Gland that presses filler in the filler upper fixed downwards, valve rod passes the hole in the middle of the described Gland, reaches the outside of ball valve.This filler can be polytetrafluoroethylene packing.

Described fluoroplastics layer can be polytetrafluoroethylene floor, perfluoroethylene-propylene layer, or the Meltability polytetrafluorethyletubular layer.

Lining fluorine tee ball valve of the present utility model, owing to adopted four unique ring structures, spheroid rotates to any one direction and all has reliable good sealing property, seal ring can adopt reinforced TFE, three independent sealed circles add an adjustable sealing circle, make lining fluorine tee ball valve have high leak tightness and low operation moment of torsion.Opening and closing need only 90 ° of rotatable handles, and just the medium in the pipe pipeline is connected or blocked to the flow direction of convertible medium.

Lining fluorine tee ball valve of the present utility model, may be equipped with fluoroplastics layer with the valve cavity that the pipeline medium directly contacts as lining, like this, but just form the novel lining fluorine tee ball valve of the media such as acid, alkali, salt and oxygenant, reducing agent, organic solvent of resisting high-concentration.

Description of drawings

Fig. 1 represents to have now the office that serves as a contrast the fluorine tee ball valve and cuts open structural representation;

Fig. 2 represents that the utility model embodiment's lining fluorine tee ball valve cuts open structural representation vertical innings;

A-A cross-sectional view in Fig. 3 presentation graphs 2.

Embodiment

With reference to accompanying drawing 2 and Fig. 3, will be described in detail embodiment of the present utility model.

The utility model lining fluorine tee ball valve, Fig. 2 is that structural representation cuts open in its vertical office, Fig. 3 is the A-A cross-sectional view among Fig. 2, referring to Fig. 2, basic identical with the structure of runner among Fig. 1 of prior art, novel lining fluorine tee ball valve is provided with valve body 1, valve gap 3 and spool 2 are shaped on 11, two straight-through runners 112 of T shape threeway runner in valve, 113, a vertical run 111, wherein two runners are to be formed on the valve body 1, another runner is formed on the valve gap 3, link together by fastening connection piece between valve gap 3 and the valve body 1, these three runners are joined together to form described threeway runner 11.Intersection at threeway runner 11 is shaped on cavity 12, the spheroid 21 of spool 2 bottoms places in the described cavity 12, the position that is connected with described threeway runner 11 on spheroid 21 has T shape three through holes 23, between spheroid 21 and cavity 12, three internal orifice outsides of threeway runner 11, be respectively arranged with three O-

ring seals

13,14,15, this O-

ring seal

13,14,15 internal diameter is preferably identical with the opening diameter that T shape three through holes 23 and threeway runner 11 are in contact with one another, and O-

ring seal

13,14,15 inner surfaces and spheroid 21 are close together, and its outer surface and cavity 12 surfaces are close together.As shown in Figure 3, in order to compress the O-ring seal 15 that is positioned at vertical run 111 places, on the valve body 1 relative, have closed hole 18 with this vertical run 111, the adjustable seal ring 6 of 18 interior insertions from the sealing hole, the retention mechanism that can inwardly be fixed adjustable seal ring 16 is set outside adjustable seal ring 16, make the internal surface of adjustable seal ring 16 be pressed in spheroid 21 surfaces, when certain three through hole forwards this position to, seal action is played in this hole, so the contacting point of adjustable seal ring 16 and spheroid 21 can seal up one of three through holes.

Fastening connection pieces such as described valve gap 3 can pass through screw, bolt and valve body 1 link together.The position of valve gap 3 can be on any runner position of T shape threeway runner 11, but for enhanced leaktightness, makes each sealing surface all compacted and seal, and the position of valve gap 3 is positioned on the straight-through runner preferably as shown in Figure 2.

Described O-

ring seal

13,14,15 can be arranged in the circular trough outside the heavy hole, road, and this circular trough also is the part of described cavity, O-

ring seal

13,14, and 15 internal surfaces can be and spheroid 21 surperficial contacted annular surfaces (part of sphere).

Adjustable seal ring 16 can be a structure as shown in Figure 3, its internal surface can be and spheroid 21 surperficial contacted annular surfaces, can certainly be sphere (that is: spherical crown surface), the outside is shaped on groove, the outer end of adjustable seal ring 16 is shaped on the flanging 161 of outside bending, and closed hole 18 is in this flanging place enlarged-diameter, form table top, and be shaped on internal thread in the expanded hole, flanging 161 can be stuck on this table top, make things convenient for the location of this adjustable seal ring 16, the inner of threaded fastener 6 is inserted in the groove of adjustable seal ring 16, and the middle part is shaped on outside thread, form screw-thread fit with the internal thread in the expanded hole, turn threaded fastener 6 and can regulate the elasticity that adjustable seal ring 16 compresses spheroid 21 surfaces, thereby can adjust the position of seal ring, all have reliable excellent sealing performance thereby make spheroid 21 rotate to any one direction.Certain adjustable seal ring 16 also can fasten with other mode concora crush.

On spool 2 tops can be valve rod 22, and valve rod 22 stretches out from the valve opening 17 of valve body 1 upper end, between valve rod 22 and the valve body 1 sealing mechanism is set, and is used for the slit between sealed valve stem 22 and the valve body 1.

Described axle sealing mechanism is when spool rotates, play seal action, can be some General Constructions, the structure of present embodiment design can be as shown in Figures 2 and 3 structure, described valve opening 17 have in the middle of tightening little down the filler in big platform shape hole contain 19, this filler is contained 19 and can be connected with valve body 1 by screw, valve rod 22 passes the aperture that filler is contained 19 bottoms, be filled with filler 191 in macropore in described filler culvert 19 and the cavity between the valve rod 22, this filler is preferably polytetrafluoroethylene packing.The Gland 192 that presses filler in filler 191 upper fixed, described Gland 192 can be that as shown in Figure 3 middle part has downward bossed gland, valve rod 22 passes the hole in the middle of the described Gland 192, reach the outside of ball valve, handle 7 can be installed in top at valve rod, and handle with sleeve 7 can drive spool 2 and rotate.Opening and closing need only 90 ° of rotatable handles, and just the medium in the pipe pipeline is connected or blocked to the flow direction of convertible medium.

In above-mentioned valve, threeway runner 11 internal surfaces, and on the inner and outer surface of spool 2, and the internal surface of cavity 12, the internal surface of axle sealing mechanism (filler is contained 19 inner and outer surface), and other may be equipped with fluoroplastics layer 4 as lining with the valve cavity that the pipeline medium directly contacts, and like this, but just form the novel lining fluorine tee ball valve of the media such as acid, alkali, salt and oxygenant, reducing agent, organic solvent of resisting high-concentration.This fluoroplastics layer 4 is to adopt isotactic pressing technology to be machined directly to the valve cavity surface, and fluoroplastics layer 4 combines very tight with valve surface.

The material of above-mentioned fluoroplastics layer 4 can be teflon (F4), perfluoroethylene-propylene (F46), and perhaps Meltability polytetrafluorethyletubular (PFA), or other can corrosion resistant fluoroplastic.

Certainly, above-described four sealing configurations also can be used for not serving as a contrast the general ball valve of fluorine.

Claims

1, a kind of novel lining fluorine tee ball valve, be provided with valve body (1), valve gap (3) and spool (2), in valve gap that links together (3) and valve body (1), be shaped on T type threeway runner (11), intersection at threeway runner (11) is shaped on cavity (12), the spheroid (21) of spool (2) bottom places in the described cavity (12), on spheroid (21), can have T shape three through holes (23) with the position that described threeway runner (11) is connected, be provided with fluoroplastics layer (4) with valve cavity that the pipeline medium directly contacts, it is characterized in that, between spheroid (21) and cavity (12), three internal orifice outsides of threeway runner (11), be respectively arranged with three O-ring seals (13,14,15), on the valve body (1) relative, have closed hole (18) with vertical run (111), contacted from sealing hole (18) interior insertion with spheroid (21) surface, the adjustable seal ring (16) of one of salable three through holes is provided with the retention mechanism that can inwardly be fixed adjustable seal ring (16) outside adjustable seal ring (16).

2, novel lining fluorine tee ball valve according to claim 1 is characterized in that, a straight-through runner in the threeway runner (11) is formed on the valve gap (3), and valve gap (3) and valve body (1) bolt are together.

3, novel lining fluorine tee ball valve according to claim 2 is characterized in that, described O-ring seal (13,14,15) is arranged in the outer cylindrical groove (121) of threeway runner internal orifice, and internal surface is and the surperficial contacted sphere annular surface of spheroid (21).

4, novel lining fluorine tee ball valve according to claim 3, it is characterized in that, the inner surface of adjustable seal ring (16) be can with the surperficial contacted surface of spheroid (21), the outside is shaped on groove, closed hole has internal thread in (18), the inner of threaded fastener (6) is inserted in the groove of adjustable seal ring (16), and the middle part of threaded fastener (6) is shaped on outside thread, with the internal thread formation screw-thread fit in the closed hole (18).

5, novel lining fluorine tee ball valve according to claim 4, it is characterized in that, be shaped on the flanging (161) of outside bending in the outer end of adjustable seal ring (16), closed hole (18) is in this flanging place enlarged-diameter, form table top (181), be shaped on internal thread in expanded hole, flanging (161) is stuck on this table top (181), the middle part of adjustable seal ring (16) is shaped on outside thread, with the internal thread formation screw-thread fit in the expanded hole.

6, novel lining fluorine tee ball valve according to claim 1 is characterized in that, is valve rod (22) on spool (2) top, and valve rod (22) stretches out from the valve opening (17) of valve body (1) upper end, between valve rod (22) and valve body (1) sealing mechanism is set.

7, novel lining fluorine tee ball valve according to claim 6, it is characterized in that, the structure of described axle sealing mechanism is: have the little down filler of big platform shape hole and contain (19) in the middle of described valve opening (17) tightens, valve rod (22) passes the aperture that filler is contained (19) bottom, be filled with filler (191) in macropore in described filler culvert (19) and the cavity between the valve rod (22), the Gland (192) that presses filler in filler (191) upper fixed downwards, valve rod (22) passes the hole in the middle of the described Gland (192), reaches the outside of ball valve.

8, novel lining fluorine tee ball valve according to claim 7 is characterized in that this filler (191) is a polytetrafluoroethylene packing.

9, novel lining fluorine tee ball valve according to claim 1 is characterized in that, described fluoroplastics layer (4) is polytetrafluoroethylene floor or perfluoroethylene-propylene layer.