CN207621409U - A kind of ball valve that sealing effect is good - Google Patents

Abstract

The utility model discloses a kind of good ball valves of sealing effect, its key points of the technical solution are that including valve body, the valve chamber being opened in valve body, in valve chamber and the groove that is connected to the spool of valve chamber inner wall and is opened on the upside of spool, the both ends of the spool are communicated in the both ends of valve body, valve body above the groove offers threaded hole, the threaded hole is threaded with transition piece, the transition piece is communicated with valve rod assembly, and fastener is arranged on the valve rod assembly；The transition piece includes the transition screwed pipe for being threadedly connected to threaded hole, the valve rod assembly includes being inserted in transition piece and axis in embedded groove and the elastic sealing element that is sheathed on axis, the fastener includes the fastening screwed pipe for being sheathed on axis and being threadedly connected to transition piece, has reached the technique effect for the sealing effect that can improve ball valve.

Description

A kind of ball valve that sealing effect is good

Technical field

The utility model is related to ball valve technical field, more particularly to the good ball valve of a kind of sealing effect.

Background technology

Ball valve is opening and closing element（Sphere）The valve for being driven by axis, and being rotated around ball valve axis is mainly used to do Cut-out, distribution and the flow direction for changing medium；And multi-pass ball valve not only can flexibly control the interflow of medium on pipeline, divide The switching of stream and flow direction, while also can close any channel and other two channel is made to be connected；In China, ball valve is extensive It applies in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steels, in national economy Occupy very important status.It has the action being rotated by 90 °, and faucet body is sphere, has round straight slot or channel to pass through its axis Line.

Existing to can refer to the Chinese patent that Authorization Notice No. is CN202545879U, it discloses a kind of manual ball valves Sealing structure, this manual ball valve include valve body and the spool that is arranged in valve body, which includes sealing ring, sealing ring It is arranged between valve body and spool, sealing ring end face can lean with spool, be equipped in pressure between sealing ring and valve body Contracting state and it can make sealing ring that there is the elastic component towards valve core movement trend, the hardness of elastic component to be less than sealing ring one end；Clothing The annular notch of annular is offered in clothes song, elastic component is socketed in the annular notch, and elastic component can be with above-mentioned valve Body leans；The cross section of elastic component is rectangular, which is arranged the annular indentation, there in sealing ring.And it can be with sealing ring The inner wall of v notch v leans.

But in the prior art, ball valve after a period of use, because fretting wear generate gap lead to its sealing effect It reduces, thus liquid leakage can be caused to influence production efficiency, therefore, how to improve the sealing effect of ball valve is a need It solves the problems, such as.

Utility model content

The purpose of this utility model is to provide a kind of ball valve that sealing effect is good, and ball valve sealing effect can be improved by having Advantage.

The above-mentioned technical purpose of the utility model technical scheme is that：

A kind of ball valve that sealing effect is good, including valve body, be opened in valve body valve chamber, in valve chamber and be connected to valve The both ends of the spool of cavity wall and the groove being opened on the upside of spool, the spool are communicated in the both ends of valve body, the groove The valve body of top offers threaded hole, and the threaded hole is threaded with transition piece, and the transition piece is communicated with valve rod assembly, institute It states and is arranged with fastener on valve rod assembly；The transition piece includes the transition screwed pipe for being threadedly connected to threaded hole, the valve rod group Part includes being inserted in transition piece and axis in embedded groove and the elastic sealing element that is sheathed on axis, the fastener packet Include the fastening screwed pipe for being sheathed on axis and being threadedly connected to transition piece.

By using said program, turning fastening screwed pipe makes it screw in transition piece, while as fastening nut moves down, squeezing Compression elasticity sealing element keeps its change flat, increases the contact force of elastic sealing element and transition screwed pipe side wall, elastic sealing element is made to play more Good sealing effect, and when the gap of elastic sealing element and transition screwed pipe becomes larger, make the two by turning fastening nut Gap become smaller, can constantly realize the effect of sealing.

Preferably, the transition piece further includes the transition nuts being fixedly arranged on the upside of transition screwed pipe, the fastening screwed pipe screw thread It is connected to transition nuts.

By using said program, transition nuts are installed on transition screwed pipe, transition nuts can incite somebody to action convenient and strength-savingly It crosses screwed pipe to be screwed into valve body, and fastening nut can be threadedly connected to the inner wall of transition nuts.

Preferably, being installed with limiting plate on the axis, the elastic sealing element is set to the upside of limiting plate.

By using said program, the limiting plate being installed on axis, elastic sealing element is set to the upside of limiting plate, when tight When firmware squeezes elastic sealing element, limiting plate can provide reaction force for elastic sealing element, so that it is squeezed and become flat bigger, sealing Effect is more preferable.

Preferably, the elastic sealing element is the rubber ring being sheathed on axis.

By using said program, elastic sealing element is the rubber ring being sheathed on axis, the larger rubber of selection elasticity Glue can increase the sealing effect of sealing element as sealing material.

Preferably, the lower end of the axis is equipped with chamfering.

By using said program, the lower end of axis is equipped with chamfering, and friction is reduced during central axis.

Preferably, the fastener further includes the fastening nut for being fixedly arranged on fastening screwed pipe upper end.

It by using said program, fastens and is installed with fastening nut on screwed pipe, fastening is driven by turning fastening nut Screwed pipe rotates, convenient and strength-saving, easily operated.

Preferably, being equipped with rubber ring between the transition nuts and transition screwed pipe.

By using said program, rubber ring is equipped between the transition nuts and transition screwed pipe, rubber ring can be reduced Friction between all parts reduces abrasion.

Preferably, being arranged with the washer that diameter is more than threaded hole on the transition screwed pipe, the washer is set to transition screwed pipe Between valve body.

By using said program, the washer that diameter is more than threaded hole is arranged on transition screwed pipe, washer being capable of valve body table Face is not by the galled spots of transition screwed pipe, pressure of the dispersion transition screwed pipe to valve body.

Preferably, the spool is equipped with rubber seal with valve body connectivity part.

By using said program, spool is equipped with rubber seal with valve body connectivity part, to spool during rotation Play the role of sealing, prevents from revealing.

In conclusion the utility model has the advantages that：

It is set to screw in transition piece 1. turning fastening screwed pipe, while as fastening nut moves down, squeezing elastic sealing element makes Its change is flat, increases the contact force of elastic sealing element and transition screwed pipe side wall, elastic sealing element is made to play better seal effect；

2. by turning transition nuts and fastening nut, to drive transition screwed pipe and fastening screwed pipe rotation respectively, it is convenient for Operation, it is convenient and strength-saving；

3. washer and rubber ring can reduce the friction between all parts, disperse the stress between all parts, improves The service life of all parts；

4. the lower end of axis is equipped with chamfering, friction is reduced during central axis；When fastener squeezes elastic packing When part, limiting plate can provide reaction force for elastic sealing element, so that it is squeezed and become flat bigger, sealing effect is more preferable.

Description of the drawings

Fig. 1 is the overall structure diagram of the utility model；

Fig. 2 is the exploded perspective view that spool is highlighted in embodiment；

Fig. 3 is the structural schematic diagram that transition piece is highlighted in embodiment；

Fig. 4 is the structural schematic diagram that valve rod assembly is highlighted in embodiment；

Fig. 5 is the structural schematic diagram that fastener is highlighted in embodiment.

In figure, 1, valve body；11, valve chamber；12, spool；121, groove；13, threaded hole；14, rubber seal；2, transition Part；21, transition screwed pipe；22, transition nuts；23, rubber ring；24, washer；3, valve rod assembly；31, axis；311, limiting plate； 312, elastic sealing element；3121, rubber ring；4, fastener；41, screwed pipe is fastened；42, fastening nut.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing.The identical attached drawing of wherein identical parts Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.

Embodiment：A kind of ball valve that sealing effect is good includes valve body 1, the valve being opened in valve body 1 combined with Figure 1 and Figure 2, Chamber 11 in the valve chamber 11 and is connected to the spool 12 of 11 inner wall of valve chamber and is opened in the groove 121 of 12 upside of spool, groove The valve body 1 of 121 tops offers threaded hole 13, and threaded hole 13 is threaded with transition piece 2, and transition piece 2 is communicated with valve rod assembly 3, fastener 4 is arranged on valve rod assembly 3；It is respectively equipped at the both ends that spool 12 is connected to valve body 1 and reduces spool 12 and valve body 1 The rubber seal 14 of friction.

In conjunction with Fig. 2 and Fig. 3, transition piece 2 includes being threadedly connected to the transition screwed pipe 21 of threaded hole 13 and being fixedly arranged on transition The transition nuts 22 of 21 upside of screwed pipe；Rubber ring 23 is equipped between transition nuts 22 and transition screwed pipe 21；It is covered on transition screwed pipe 21 It is more than the washer 24 of threaded hole 13 equipped with diameter, washer 24 is between transition screwed pipe 21 and valve body 1.

In conjunction with Fig. 3 and Fig. 4, valve rod assembly 3 includes being inserted in transition piece 2 and embedded groove 121（With reference to figure 2）In axis 31, the limiting plate 311 being fixedly arranged on axis 31 and the elastic sealing element for being sheathed on axis 31 and being connected on limiting plate 311 312, the lower end of axis 31 is equipped with the chamfering for reducing friction, and elastic sealing element 312 includes two rubber being sheathed on axis 31 Annulus 3121.

In conjunction with Fig. 4 and Fig. 5, fastener 4 includes being sheathed on axis 31 and being threadedly connected to transition nuts 22（With reference to figure 3）'s Fastening screwed pipe 41 and the fastening nut 42 for being fixedly arranged on 41 upper end of fastening screwed pipe, fastening screwed pipe 41 are connected to elastic sealing element 312 On.

Specific mounting means：Washer 24 is placed on valve body 1 first, then transition screwed pipe 21 is inserted in washer 24 and It is threadedly connected to threaded hole 13, rubber ring 23 is placed between transition nuts 22 and transition screwed pipe 21, then inserts valve rod assembly 3 In transition piece 2, and the lower end of axis 31 is made to be embedded in the groove 121 of spool 12, then turning fastening nut 42 will be tight Gu screwed pipe 41 is threadedly connected in fastening nut 42, elastic sealing element 312 is compressed by turning fastening nut 42, it is then elastic close Sealing 312, which mutually squeezes, becomes flat, effective to realize to reduce the gap of elastic sealing element 312 and 21 inner wall of transition screwed pipe Sealing effect；When ball valve sealing performance reduction in use for some time, elasticity is compressed again by turning fastening nut 42 Sealing element 312 reduces the gap of elastic sealing element 312 and 21 inner wall of transition screwed pipe, realizes constantly sealing effect, and then improve The sealing performance of ball valve.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as all being protected by Patent Law in the right of the utility model.

Claims (9)

1. a kind of good ball valve of sealing effect, including valve body (1), be opened in valve body (1) valve chamber (11), be set to valve chamber (11) Spool (12) that is interior and being connected to valve chamber (11) inner wall and the groove (121) being opened on the upside of spool (12), the spool (12) both ends are communicated in the both ends of valve body (1), it is characterised in that：Valve body (1) above the groove (121) offers screw thread Hole (13), the threaded hole (13) are threaded with transition piece (2), and the transition piece (2) is communicated with valve rod assembly (3), described Fastener (4) is arranged on valve rod assembly (3)；The transition piece (2) includes the transition screwed pipe for being threadedly connected to threaded hole (13) (21), the valve rod assembly (3) includes being inserted in transition piece (2) and axis (31) in embedded groove (121) and being sheathed on Elastic sealing element (312) on axis (31), the fastener (4) include being sheathed on axis (31) and being threadedly connected to transition piece (2) fastening screwed pipe (41).

2. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：The transition piece (2) further includes The transition nuts (22) being fixedly arranged on the upside of transition screwed pipe (21), the fastening screwed pipe (41) are threadedly connected to transition nuts (22).

3. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：It is installed on the axis (31) Limiting plate (311), the elastic sealing element (312) are set to the upside of limiting plate (311).

4. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：The elastic sealing element (312) To be sheathed on the rubber ring (3121) on axis (31).

5. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：The lower end of the axis (31) is set There is chamfering.

6. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：The fastener (4) further includes It is fixedly arranged on the fastening nut (42) of fastening screwed pipe (41) upper end.

7. a kind of good ball valve of sealing effect according to claim 2, it is characterised in that：The transition nuts (22) and mistake It crosses between screwed pipe (21) equipped with rubber ring (23).

8. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：It is covered on the transition screwed pipe (21) It is more than the washer (24) of threaded hole (13) equipped with diameter, the washer (24) is set between transition screwed pipe (21) and valve body (1).

9. a kind of good ball valve of sealing effect according to claim 1, it is characterised in that：The spool (12) and valve body (1) connectivity part is equipped with rubber seal (14).