CN208595254U - A kind of ball valve - Google Patents

Abstract

The utility model provides a kind of ball valve, belongs to valve technology field.It solves existing valve body and bonnet separately manufacturing, and mechanical strength is not high, the bad problem of seal spool effect.Admitting pipe joint, titting water outlet in the utility model ball valve are all an integral structure with valve body, titting water outlet inner end is provided with seal receptacle on end face, left sealing ring is in the seal receptacle and the left sealing ring elasticity is resisted against on the spool, restraining position ring block is set in admitting pipe joint, stop collar, which presses closer the right sealing ring, makes its resilient abutment form sealing in spool and with spool, has the connection structure for making stop collar axial displacement between stop collar and admitting pipe joint.The utility model structure is simple, valve body is integrated manufacture, and high mechanical strength, sealing effect are good, it is not easy to which generation is revealed, is with long service life, easy to use.

Description

A kind of ball valve

Technical field

The utility model belongs to valve technology field, is related to a kind of ball valve.

Background technique

Ball valve is the valve for driving core to rotate around the axis of valve rod by valve rod, is mainly used for being truncated or connect Medium in pipeline also can be used for the adjusting and control of fluid, be widely used in various control pipelines.

Common ball valve is under low temperature icing condition in use, general when extraneous temperature is relatively low when in use Ball valve can due in valve body water freezing increase volume so that ball valve is burst.Such as Chinese patent Patent No.: " 201620192867.6 " A kind of ball valve, specific structure are as follows: including valve body, be set to the intracorporal spool of valve and valve rod, the inner end of valve rod with Spool is circumferentially connected, and the outer end of valve rod stretches out valve body and is connected with handle, and valve body includes ontology and is threadedly connected on ontology Bonnet, the outside that ceramic seal circle and upper ceramic seal circle are embedded at the top of spool be fit in inner body wall, The arcwall face of bonnet inner wall, has the step one for upper ceramic seal delineation position at the top of spool, spool and upper ceramic seal circle it Between be equipped with rubber pad one and the tubular rubber sleeve one being placed on spool, rubber sleeve one is by the step surface and lateral surface of step one Coating and being embedded with the outer peripheral surface of lower ceramic seal circle and lower ceramic seal circle at the bottom of spool is to fit in inner body wall, bonnet The arcwall face of inner wall, spool bottom have the step two for lower ceramic seal delineation position, set between spool and lower ceramic seal circle There are a rubber pad two and the tubular rubber sleeve two being placed on spool, rubber pad two is by the step surface of step two and outside bread It covers.

In such a configuration, the ceramic seal circle on the spool is fastened on valve body surely by bonnet, and the bonnet The specific structure of fixed tight ceramic seal circle are as follows: valve body and bonnet separately manufacturing, bonnet, which is connected through a screw thread, to be installed on valve body, valve The end face of cap be against end face, by bonnet end face against ceramic seal circle and make ceramic seal circle effect spool and with spool it is close Envelope, above-mentioned structure, valve body and bonnet separately manufacturing, mechanical strength is not high, there are also fixed tight by bonnet, and the ceramic seal circle with The sealing effect of spool is bad, and leakage is easy when long-time uses, and service life is short.

Summary of the invention

The purpose of this utility model is to provide that a kind of structure is simple, valve for the above-mentioned problems in the prior art Body is integrated manufacture, and high mechanical strength, sealing effect are good, it is not easy to which generation is revealed, is with long service life.

The purpose of this utility model can be realized by the following technical scheme: a kind of ball valve, including valve body, described One end of valve body has an admitting pipe joint, and the other end of the valve body has a titting water outlet, the admitting pipe joint and Titting water outlet is interconnected and is provided with spool in the valve body between the rwo, has between the spool and the valve body There are left sealing ring, right sealing ring, the valve rod connecting with valve seal, the lower end of the valve rod are additionally provided on the valve body It is connect with the spool, the upper end of the valve rod is stretched out outside the valve body and the upper end end is connected with handle, special Sign is that the admitting pipe joint, titting water outlet are all an integral structure with the valve body, the titting water outlet Seal receptacle is provided on the end face of inner end, the left sealing ring is in the seal receptacle and the left sealing ring elasticity is resisted against On the spool, restraining position ring block is set, and the stop collar, which presses closer the right sealing ring, to be made in the admitting pipe joint Its resilient abutment forms sealing in the spool and with spool, has between the stop collar and the admitting pipe joint Make the connection structure of stop collar axial displacement.

Admitting pipe joint, titting water outlet are mainly all used integral structure with valve body by the utility model ball valve, improve valve The mechanical strength of body itself makes valve body long service life, which passes through seal receptacle fixed connection and sealing, sealing effect Good, which presses closer sealing by stop collar, can be threadedly coupled water inlet pipe in actual use, in the admitting pipe joint, The end face of water inlet pipe, which can be resisted against on the end face of stop collar, causes stop collar axially position, presses closer right seal ring structure by stop collar Stablize, easy to use, sealing effect is good, it is not easy to reveal.In actually manufacture, have on the annular end face of the right sealing ring There is axial raised guide ring, there is guide groove on the end face of the stop collar, the guide ring is in the guide groove.

In above-mentioned ball valve, the connection structure includes that internal screw thread is provided on admitting pipe joint inner wall, institute External screw thread is provided on the outer wall for the stop collar stated, the interior annular distance of the stop collar is Hexagon hole, and the stop collar is logical External screw thread spiral is crossed to be connected on the internal screw thread of the admitting pipe joint.Make to limit on Hexagon hole by acting on stop collar Position ring rotation, and the mode that the stop collar is connected through a screw thread is connected on admitting pipe joint, and can be made by rotary spacing ring Stop collar, which is pressed closer, fixes the rwo resilient abutment on right sealing ring.

In above-mentioned ball valve, the water inlet of the admitting pipe joint is provided with for connecting with water inlet pipe There is the sealing structure with water inlet pipe rotatory sealing on sealing ring and the sealing ring.The purpose being arranged in this way is to guarantee that water inlet pipe connects Head makes both sealing effect more preferable when connecting with water inlet pipe.

Have annular in above-mentioned ball valve, on the inner wall of the admitting pipe joint is embedded slot, and described is close There is connecting ring portion, the sealing ring is embedded by the described connecting ring portion fixation described embedding in the annular wall of seal If in slot.The purpose being arranged in this way is the stability for guaranteeing sealing ring and connecting with admitting pipe joint.

In above-mentioned ball valve, the sealing structure include sealing ring inner ring end face have extend axially outward Toroidal helical tongue, the cross section of the toroidal helical tongue is the inclined triangular portion of ecto-entad.The water inlet pipe connects When connecting with water inlet pipe, which is brought between the connection of both the water inlet pipe and admitting pipe joint head by water inlet pipe At gap, make the rwo with better sealing.

Compared with prior art, the advantages of the utility model ball valve are as follows: structure is simple, valve body is integrated manufacture, high mechanical strength, Sealing effect is good, it is not easy to which generation is revealed, is with long service life, easy to use.

Detailed description of the invention

Fig. 1 is the schematic cross-sectional view of the utility model ball valve.

In figure, 1, valve body；2, admitting pipe joint；3, titting water outlet；4, spool；5, left sealing ring；6, right sealing ring； 6a, guide ring；7, valve rod；8, handle；9, stop collar；10, sealing ring；11, connecting ring portion；12, toroidal helical tongue.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Figure 1, the utility model ball valve is mainly made of valve body 1, one end of valve body 1 has admitting pipe joint 2, valve body 1 The other end there is titting water outlet 3, admitting pipe joint 2 and titting water outlet 3 are interconnected and in the valve bodies 1 between the rwo It is provided with spool 4, there is left sealing ring 5, right sealing ring 6 between spool 4 and the valve body 1, is additionally provided on valve body 1 and valve The valve rod 7 that body 1 is tightly connected, the lower end of valve rod 7 are connect with the spool 4, and the upper end of valve rod 7 is stretched out outside valve body 1 and on this End end is connected with handle 8, and admitting pipe joint 2, titting water outlet 3 are all an integral structure with valve body 1, in titting water outlet 3 End is provided with seal receptacle on end face, and left sealing ring 5 is in seal receptacle and left 5 resilient abutment of sealing ring is on spool 4, water inlet Restraining position ring block 9 is set in pipe fitting 2, and stop collar 9, which presses closer right sealing ring 6, to be made its resilient abutment in spool 4 and formed with spool 4 close Envelope；In actually manufacture, there is axial raised guide ring 6a, the end face of the stop collar 9 on the annular end face of the right sealing ring 6 Upper to have guide groove, the guide ring 6a is in the guide groove；Between stop collar 9 and the admitting pipe joint 2 With the connection structure for making 9 axial displacement of stop collar.

In actually manufacture, the specific embodiment of the connection structure are as follows: be provided with interior spiral shell on 2 inner wall of admitting pipe joint Line is provided with external screw thread on the outer wall of stop collar 9, and the interior annular distance of stop collar 9 is Hexagon hole, and stop collar 9 passes through external screw thread spiral shell Rotation is connected on the internal screw thread of admitting pipe joint 2.

In actual design, the water inlet of the admitting pipe joint 2 is provided with the sealing ring 10 for connecting with water inlet pipe And with the sealing structure with water inlet pipe rotatory sealing on the sealing ring 10；In actually manufacture, the sealing ring 10 is in water inlet pipe The specific connection type of connector 2 are as follows: have annular on the inner wall of admitting pipe joint 2 is embedded slot, the annular wall of sealing ring 10 Upper to have connecting ring portion 11, sealing ring 10 is embedded in being embedded slot by the fixation of connecting ring portion 11.

In actually manufacture, the specific embodiment of the sealing structure are as follows: the inner ring end face of sealing ring 10 have it is axial to The toroidal helical tongue 12 of outer extension, the cross section of toroidal helical tongue 12 are the inclined triangular portion of ecto-entad；The water inlet For pipe fitting 2 when connecting with water inlet pipe, which brings both the water inlet pipe and admitting pipe joint 2 by water inlet pipe Joint gap at, make the rwo with better sealing.

The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.Herein Described in specific embodiment be only the spirit of the present invention is given an example.The utility model technical field Technical staff can make various modifications or additions to the described embodiments or be substituted in a similar manner, but Without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (5)

1. one end of a kind of ball valve, including valve body (1), the valve body (1) has admitting pipe joint (2), the valve The other end of body (1) has titting water outlet (3), and the admitting pipe joint (2) and titting water outlet (3) are interconnected and are somebody's turn to do It is provided with spool (4) in valve body (1) between the two, there is left sealing ring between the spool (4) and the valve body (1) (5), right sealing ring (6) is additionally provided with the valve rod (7) being tightly connected with valve body (1), the valve rod on the valve body (1) (7) lower end is connect with the spool (4), and the valve body (1) is stretched out outside and the upper end end in the upper end of the valve rod (7) Portion is connected with handle (8), which is characterized in that the admitting pipe joint (2), titting water outlet (3) all with the valve body (1) It is an integral structure, seal receptacle is provided on the titting water outlet (3) inner end end face, the left sealing ring (5) is in In the seal receptacle and left sealing ring (5) resilient abutment is on the spool (4), in the admitting pipe joint (2) It is arranged restraining position ring block (9), the stop collar (9), which presses closer the right sealing ring (6), makes its resilient abutment in the spool (4) it and is formed and is sealed with spool (4), having between the stop collar (9) and the admitting pipe joint (2) makes stop collar (9) connection structure of axial displacement.

2. a kind of ball valve according to claim 1, which is characterized in that the connection structure includes admitting pipe joint (2) be provided with internal screw thread on inner wall, be provided with external screw thread on the outer wall of the stop collar (9), the stop collar (9) it is interior Annular distance is Hexagon hole, and the stop collar (9) is connected to the internal screw thread of the admitting pipe joint (2) by external screw thread spiral On.

3. a kind of ball valve according to claim 2, which is characterized in that the water inlet of the admitting pipe joint (2) Place is provided on the sealing ring for connecting with water inlet pipe (10) and the sealing ring (10) with close with water inlet pipe rotatory sealing Seal structure.

4. a kind of ball valve according to claim 3, which is characterized in that on the inner wall of the admitting pipe joint (2) With the annular slot that is embedded, there are connecting ring portion (11) in the annular wall of the sealing ring (10), the sealing ring (10) it is embedded in slot by fixed be embedded of the connecting ring portion (11) in described.

5. a kind of ball valve according to claim 4, which is characterized in that the sealing structure includes sealing ring (10) Inner ring end face have the axially outwardly extending toroidal helical tongue (12), the cross section of the toroidal helical tongue (12) is The inclined triangular portion of ecto-entad.