CN202302047U - Hard sealing ball valve - Google Patents
Hard sealing ball valve Download PDFInfo
- Publication number
- CN202302047U CN202302047U CN2011203070065U CN201120307006U CN202302047U CN 202302047 U CN202302047 U CN 202302047U CN 2011203070065 U CN2011203070065 U CN 2011203070065U CN 201120307006 U CN201120307006 U CN 201120307006U CN 202302047 U CN202302047 U CN 202302047U
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- valve
- valve seat
- groove
- ball valve
- fluid passage
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Abstract
The utility model discloses a hard sealing ball valve, comprising a valve body with a fluid channel, a valve seat and a ball-shaped valve core, wherein the valve body is provided with a fluid channel; the valve seat is arranged in the valve body; the ball-shaped valve core is matched with the valve seat; a first groove is formed between the valve seat positioned at an inlet side of the fluid channel and the valve body; and the first groove is communicated with the fluid channel. By the arrangement, according to the hard sealing ball valve disclosed by the utility model, better sealing performance can still be achieved between the ball body valve core and the valve seat in a high-temperature environment.
Description
Technical field
The utility model relates to valve technology field, particularly a kind of hard seal ball valve.
Background technique
Valve is had everything in national economy, and it and production, construction, national defence and people's lives have substantial connection.Valve is mounted in the controlling component in the fluid delivery systems such as various pipelines and equipment, is made up of valve body, flap, valve gap, valve seat, valve rod, Sealing etc., has water conservancy diversion, by functions such as, throttling, shunting, overflow releases.
Valve of a great variety for example, pressed the purpose classification of valve, and valve can be divided into block valve, safety check, safety valve, modulating valve and diverter valve.Wherein block valve comprises gate valve, stop valve, stopcock, ball valve and dish valve etc. again, below content will be that example describes in detail with the ball valve.
Spheroid spool that ball valve comprises valve rod, be connected with valve rod and the valve seat that matches with the spheroid spool.Be provided with seal assemblies between valve seat and the spheroid spool, by the performance of seal assemblies, ball valve can be divided into hard seal ball valve and soft sealing ball valve again.The spheroid spool of hard seal ball valve is provided with through hole, and the spheroid spool is driven by valve rod, and rotates around the axis of valve rod, and then realizes the valve of the keying of the through hole on the spheroid spool.
In the existing technology,, have impacting force preferably between spheroid spool and the valve seat,, between spheroid spool and valve seat, often be provided with spring assembly so that the two has better seal property in order to make hard seal ball valve when being in cut-off state.When hard seal ball valve was in cut-off state, under the impacting force effect of spring, the spheroid spool contacted with spring assembly and has bigger impacting force between opposite side and the valve seat of a side, and then has effectively guaranteed the sealing between spheroid spool and the valve seat.
Yet hard seal ball valve often is applied in the hot environment, for example, is used for carrying the pipeline of high-temp liquid or steam.Spring assembly is in hot environment, and its elasticity is a greater impact, even follows the string.And then cause the sealing between spheroid spool and the valve seat relatively poor.
Therefore, how a kind of hard seal ball valve is provided, it still has better seal property between spheroid spool and the valve seat in hot environment, become those skilled in the art's important technological problems to be solved.
The model utility content
In view of this, the utility model provides a kind of hard seal ball valve, and it can effectively guarantee to have better seal property between spheroid spool and the valve seat in hot environment.
For realizing above-mentioned purpose, the utility model provides following technological scheme:
A kind of hard seal ball valve that the utility model provides; Comprise the valve body with fluid passage, the valve seat that is arranged at said valve inner and the spherical spool that matches with said valve seat; Between the said valve seat of the inlet side of said fluid passage and said valve body, form first groove, and said first groove communicates with said fluid passage.
Preferably, between the said valve seat of the outlet side of said fluid passage and said valve body, form second groove, and said second groove communicates with said fluid passage.
Preferably, be provided with first seal arrangement between said valve seat and the said valve body.
Preferably, the fitting surface that said valve seat matches with said valve body is provided with the annular seal groove, and said first seal arrangement is the seal ring that is arranged at said annular seal groove.
Preferably, be provided with second seal arrangement between the valve rod of said hard seal ball valve and the said valve body.
Preferably, said second seal arrangement is the gasket seal that is arranged between said valve rod and the said valve body.
A kind of hard seal ball valve that the utility model provides; Comprise the valve body with fluid passage, the valve seat that is arranged at said valve inner and the spherical spool that matches with said valve seat; Between the said valve seat of the inlet side of said fluid passage and said valve body, form first groove, and said first groove communicates with said fluid passage.
So be provided with, when hard seal ball valve is in cut-off state, owing to first groove communicates with the fluid passage, so fluid flows in first groove.In addition, because first groove forms by valve seat and valve body, so fluid must put on valve seat one active force, this active force makes valve seat generation microdisplacement, and then makes valve seat be pressed in spherical spool.Therefore, the hard seal ball valve that the utility model provides need not to be provided with spring assembly, can realize closely cooperating between spherical spool and the valve seat.And then the hard seal ball valve that the utility model provides can effectively guarantee to have better seal property between spheroid spool and the valve seat in hot environment.
In the preferred version of the utility model, between the said valve seat of the outlet side of said fluid passage and said valve body, form second groove, and said second groove communicates with said fluid passage.It is pointed out that the outlet of hard seal ball valve fluid passage can be used as inlet in order to improve the convenience that hard seal ball valve is installed, its inlet also can be used as outlet.In addition, because production needs, fluid needs adverse current sometimes in the pipeline.Given this, the hard seal ball valve that the utility model provides, it forms second groove between the valve seat of the outlet side of said fluid passage and valve body, and second groove communicates with the fluid passage.
So be provided with; When fluid carries out adverse current in pipeline, or the hard seal ball valve installation direction is when opposite, and fluid can get into second groove by the fluid passage; The fluid that gets into this second groove can apply valve seat one active force equally; Under this active force, valve seat is to an end movement that matches with spherical spool, and then makes valve seat be pressed in spherical spool.Therefore, the preferred version that the utility model provides, no matter when the hard seal ball valve installation direction was opposite, still when fluid carried out adverse current, spherical spool all can be pressed in valve seat.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a hard seal ball valve sectional structure schematic representation in the utility model embodiment;
Fig. 2 is an A portion structure for amplifying schematic representation among Fig. 1.
Embodiment
The utility model provides a kind of hard seal ball valve, and it can effectively guarantee to have better seal property between spheroid spool and the valve seat in hot environment.
To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is a hard seal ball valve sectional structure schematic representation in the utility model embodiment; Fig. 2 is an A portion structure for amplifying schematic representation among Fig. 1.
This embodiment provides a kind of hard seal ball valve, comprises the valve body 11 with fluid passage 111, the valve seats 12 that are arranged at valve body 11 inside and the spherical spool 13 that matches with valve seat.The fluid passage 111 that it may be noted that is divided into two-part by spherical spool 13, is respectively the first side 111a and the second side 111b, and wherein the first side 111a is the inlet side of fluid passage 111.Offer through hole 131 on the spherical spool 13; Valve rod 14 is used to handle the rotation of spherical spool 13, and when the direction of through hole 131 was consistent with fluid passage 111 directions, hard seal ball valve was an on state; When through hole 131 and fluid passage 111 directions were perpendicular, hard seal ball valve was a cut-off state.
The hard seal ball valve that this embodiment provided between the valve seat 12 of the first side 111a of fluid passage 111 and valve body 11, form first groove 121, and first groove 121 communicates with fluid passage 111.Should be appreciated that the ring structure of this first groove 121 for the vertical direction shown in Fig. 1.
So be provided with, when hard seal ball valve is in cut-off state, owing to first groove 121 communicates with fluid passage 111, so fluid can flow in first groove 121.In addition; Because first groove 121 is positioned at valve seat 12 and valve body 11 contacted sides; So charging into fluids in first groove 121 must put on valve seat 12 1 and point to valve seats 12 and match with spherical spool 13 and unify the active force of extreme direction; Under the effect of this active force, valve seat 12 produces microdisplacement to spherical spool 13 directions, and then makes valve seat 12 be pressed in spherical spool 13.
Therefore, the hard seal ball valve that this embodiment provided need not to be provided with spring assembly, can realize closely cooperating between spherical spool 13 and the valve seat 12.And then the hard seal ball valve that the utility model provides can effectively guarantee to have better seal property between spheroid spool 13 and the valve seat 12 in hot environment.
In addition, need to prove that in order to improve hard seal ball valve property easy for installation, not needing specifically to differentiate fluid passage 111 concrete which side when promptly hard seal ball valve being installed is the fluid input side, which side is the fluid output side.The hard seal ball valve that this embodiment provided, the first side 111a of its fluid passage 111 and the second side 111b all can be used as the fluid output side and the fluid input side of hard seal ball valve.
Given this, between the valve seat 12 of the second side 111b of fluid passage 111 and valve body 11, form second groove, and second groove communicates with fluid passage 111.Should be appreciated that this second groove is the ring structure near the vertical direction of the second side 111b of fluid passage 111.
So be provided with, when the second side 111b of the fluid passage 111 of hard seal ball valve is the fluid input side, and when hard seal ball valve is in cut-off state.Because second groove communicates with fluid passage 111, so fluid can flow in second groove.In addition; Because second groove shaped is formed between valve seat 12 and the valve body 11; Must put on the active force that valve seat 12 1 is directed to spherical spool 13 so charge into the fluid of second groove; Under the effect of this active force, valve seat 12 produces microdisplacement to spherical spool 13 directions, and then makes valve seat 12 be pressed in spherical spool 13.
So be provided with, the hard seal ball valve that this embodiment provided can specifically be applied in the pipeline of reversible flow, when fluid countercurrent current; Equally; Fluid puts on the pressure of valve seat 12, can make valve seat 12 be pressed in spherical spool 13, and then realize the sealing between the two.
It is to be noted; Valve seat 12 is the parts that are installed on valve body 11 inside; Need have better seal property between valve seat 12 and the valve body 11 and can guarantee that high-pressure liquid is spilt by the gap between valve seat 12 and the valve body 11, to avoid occurring hard seal ball valve leakage or gas leakage problem.
Given this, the hard seal ball valve that this embodiment provided can be provided with first seal arrangement 15 between its valve seat 12 and valve body 11 fitting surfaces.This first seal arrangement 15 specifically can be provided with as follows.
Can be provided with the annular seal groove on valve seat 12 and the one side that valve body 11 matches, first seal arrangement 15 can be specially the seal ring that is assemblied in this annular seal groove.Preferably; The cross section of sealing circle is identical with the cross-sectional structure of annular seal groove, and for example, the cross section of annular seal groove can be specially square; The cross section of seal ring also relative set is square; So be provided with, the assembling between the two is tightr, has effectively evaded the problem of leakage or gas leakage.
In addition, need have better seal property equally between valve rod 14 and the valve body 11, the hard seal ball valve that this embodiment provided can be provided with second seal arrangement 16 between its valve rod 14 and the valve body 11.This second seal arrangement 16 can be specially the sealing gasket device that is arranged between valve rod 14 and the valve body 11.Certainly, on valve body 11 and fitting surface valve rod 14, can be provided with a plurality of grooves, fill out some packings 17 in this groove, such as inserting rubber strip.
So be provided with, can guarantee to have better seal property between valve rod 14 and the valve body 11.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (6)
1. hard seal ball valve; Comprise the valve body with fluid passage, the valve seat that is arranged at said valve inner and the spherical spool that matches with said valve seat; It is characterized in that; Between the said valve seat of the inlet side of said fluid passage and said valve body, form first groove, and said first groove communicates with said fluid passage.
2. hard seal ball valve as claimed in claim 1 is characterized in that, between the said valve seat of the outlet side of said fluid passage and said valve body, form second groove, and said second groove communicates with said fluid passage.
3. hard seal ball valve as claimed in claim 2 is characterized in that, is provided with first seal arrangement between said valve seat and the said valve body.
4. hard seal ball valve as claimed in claim 3 is characterized in that, the fitting surface that said valve seat matches with said valve body is provided with the annular seal groove, and said first seal arrangement is the seal ring that is arranged at said annular seal groove.
5. hard seal ball valve as claimed in claim 4 is characterized in that, is provided with second seal arrangement between the valve rod of said hard seal ball valve and the said valve body.
6. hard seal ball valve as claimed in claim 5 is characterized in that, said second seal arrangement is the gasket seal that is arranged between said valve rod and the said valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203070065U CN202302047U (en) | 2011-08-22 | 2011-08-22 | Hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203070065U CN202302047U (en) | 2011-08-22 | 2011-08-22 | Hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202302047U true CN202302047U (en) | 2012-07-04 |
Family
ID=46370945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203070065U Expired - Lifetime CN202302047U (en) | 2011-08-22 | 2011-08-22 | Hard sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202302047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257867A (en) * | 2015-11-25 | 2016-01-20 | 江苏华太电力仪表有限公司 | Novel three-way plug valve |
-
2011
- 2011-08-22 CN CN2011203070065U patent/CN202302047U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257867A (en) * | 2015-11-25 | 2016-01-20 | 江苏华太电力仪表有限公司 | Novel three-way plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |