CN206299828U - Sealing structure of high-pressure ball valve - Google Patents
Sealing structure of high-pressure ball valve Download PDFInfo
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- CN206299828U CN206299828U CN201621402751.7U CN201621402751U CN206299828U CN 206299828 U CN206299828 U CN 206299828U CN 201621402751 U CN201621402751 U CN 201621402751U CN 206299828 U CN206299828 U CN 206299828U
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- valve
- spheroid
- valve body
- output end
- annular boss
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Abstract
The utility model is related to industrial valves technical field,More particularly, to a kind of sealing structure of high-pressure ball valve,Including valve body,One end of valve body is provided with input,The other end of valve body is provided with output end,Input is connected with output end,Spheroid is provided with valve body,Spheroid has passage,The passage of spheroid is connected with input and output end,Two valve seats are provided with valve body and input and output end is located at respectively,Two valve seats are contacted with spheroid,Two valve seats,Cavity body is provided between spheroid and valve body,Valve seat is provided with annular boss near output end,Annular boss is located in cavity body,The side of annular boss contacts with spheroid,Annular boss is arranged in parallel with the contact surface of annular boss and spheroid away from the side of contact surface side,The utility model simple structure,It is easy to operate,Effectively raise the sealing property of valve seat,The service life of ball valve is also improved simultaneously.
Description
Technical field
The utility model is related to industrial valves technical field, more particularly, to a kind of sealing structure of high-pressure ball valve.
Background technology
Generally all in fluid pressure line or fluid foods conveyance conduit in the industries such as metallurgy, chemical industry, oil, food, medicine
Upper setting ball valve.Because ball valve is generally used so that it opens and closes rapid, good seal performance.
The basic structure of ball valve is：One spheroid is set in the inner chamber of valve body, through hole and valve body two ends in the middle of spheroid
Import and export conducting, i.e., through hole constitute pipeline in one section；During closing, driven by top valve rod and rotate spheroid, and make ball
On through hole central axis it is orthogonal with the cener line of pipeline, pipeline is blocked with the smooth sphere in spheroid both sides；
Valve component sealing structure is provided between valve body and spheroid, the sealing structure includes seal valve seat, located at valve body and valve base chamber
Ring assembly, by the hard sealing of contact surface between valve seat and spheroid, along with the soft seal between valve seat and valve body, it is ensured that
Valve seal.
Existing valve body is closed, and soft seal between valve body and valve seat is when failing, because spheroid is located at it
There is certain interval between the two ends of axis of rotation and valve body, the high-pressure medium for being is passed through in valve body, the medium in valve body can be
Arrival end reaches the other end of valve body by the gap between valve body and valve seat, and the sealing surface washed away between spheroid and valve seat is led
Cause medium to be flowed out by the port of export by the contact surface between spheroid and valve seat, reduce the sealing of valve seat.
Utility model content
The technical problems to be solved in the utility model is：Be closed to solve existing valve body, and valve body with
When soft seal between valve seat is failed, because spheroid is located at there is certain interval, valve between the two ends of its axis of rotation and valve body
The high-pressure medium for being is passed through in vivo, the medium in valve body can reach valve body in arrival end by the gap between valve body and valve seat
The other end, the sealing surface washed away between spheroid and valve seat causes medium to pass through the contact surface between spheroid and valve seat by the port of export
Outflow, reduces the problem of the sealing of valve seat, now there is provided a kind of sealing structure of high-pressure ball valve.
The utility model solves the technical scheme that its technical problem used：A kind of sealing structure of high-pressure ball valve, including
Valve body, one end of the valve body is provided with input, and the other end of the valve body is provided with output end, and the input and output end connect
It is logical, spheroid is provided with the valve body, the passage that the spheroid has passage, the spheroid is connected with input and output end, institute
State and be provided with valve body two valve seats and be located at input and output end respectively, two valve seats are contacted with spheroid, two
The valve seat, cavity body is provided between spheroid and valve body, the valve seat is provided with annular boss, the convex annular near output end
Platform is located in the cavity body, and the side of the annular boss contacts with the spheroid, and the annular boss is away from contact surface one
The side of side is arranged in parallel with the contact surface of annular boss and the spheroid.It is high-pressure medium due to what is be passed through in ball valve,
When ball valve is closed, and during seal failure between valve seat and valve body, high-pressure medium will be entered by the valve seat of input
To in cavity body, and valve seat to output end impacts, so as to cause the seal failure of output end valve seat, by the way that valve body is defeated
Go out to hold spheroid arranged in parallel away from the side of spheroid side with the contact surface and annular boss of annular boss on valve seat so that
When the seal failure positioned at input valve seat, high-pressure medium is entered into cavity body, and it is remote that high-pressure medium acts on annular boss
Active force on contact surface upper side can fit boss with the contact surface of spheroid even closer, the now effect of high-pressure medium
Power all will apply on the contact surface, and will not be broken down into the active force on other direction, improve the sealing of valve seat
Energy.
In order to prevent valve seat from being influenceed by impurity in medium, cause valve seat to block, influence the sealing property of valve seat, enter one
Step ground, the valve body is provided with the blowing pipe connected with the cavity body, and the blowing pipe is provided with away from one end of the valve body
Flange terminal pad, blind flange is fixedly connected with the flange terminal pad.By the blowing pipe set on valve body, blowing pipe
Connected with cavity body, bubbling device can effectively avoid accumulation at valve seat miscellaneous to being purged between valve body and valve seat
Matter, and the sealing of valve seat is had influence on, improve the service life of ball valve.
The beneficial effects of the utility model are：The utility model sealing structure of high-pressure ball valve when in use, due in ball valve
What is be passed through is high-pressure medium, and when ball valve is closed, and during seal failure between valve seat and valve body, high-pressure medium will be by
The valve seat of input is entered into cavity body, and valve seat to output end impacts, so as to cause the sealing of output end valve seat
Failure, by by the contact surface and annular boss of annular boss on valve body output end spheroid and valve seat away from spheroid side side
It is arranged in parallel so that when the seal failure positioned at input valve seat, high-pressure medium is entered into cavity body, high-pressure medium
Act on annular boss boss can be fitted with the contact surface of spheroid away from the active force on contact surface upper side it is even closer, this
When high-pressure medium active force will all apply on the contact surface, and the active force on other direction will not be broken down into, carry
The sealing property of valve seat high, the utility model simple structure is easy to operate, effectively raises the sealing property of valve seat, together
When also improve the service life of ball valve.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the front view of the utility model sealing structure of high-pressure ball valve；
Fig. 2 is the partial enlarged drawing of A in Fig. 1；
Fig. 3 is the force diagram of the valve seat of the utility model sealing structure of high-pressure ball valve.
In figure：1st, valve body, 101, input, 102, output end, 2, spheroid, 201, passage, 3, valve seat, 4, annular boss,
5th, blowing pipe, 6, flange terminal pad, 7, blind flange, 8, cavity body.
Specific embodiment
Presently in connection with accompanying drawing, the utility model is described in more detail.These accompanying drawings are simplified schematic diagram,
Basic structure of the present utility model is only illustrated in a schematic way, therefore it only shows the composition relevant with the utility model.
Embodiment
As shown in Figure 1,2 and 3, a kind of sealing structure of high-pressure ball valve, including valve body 1, one end of the valve body 1 is provided with input
End 101, the other end of the valve body 1 is provided with output end 102, and input 101 and output end 102 are provided with adpting flange connection
Disk 6, for the connection to pipeline, the input 101 is connected with output end 102, and spheroid 2, the ball are provided with the valve body 1
Body 2 has passage 201, by external component spheroid 2 can be controlled to rotate, so as to control passage 201 and the input on spheroid 2
101 are connected and close with output end 102, and the passage 201 of the spheroid 2 is connected with input 101 and output end 102, the valve
Two valve seats 3 are provided with body 1 and input 101 and output end 102 is located at respectively, two valve seats 3 connect with spheroid 2
Touch, the contact surface of valve seat 3 and spheroid 2 is sealing surface, two valve seats 3, cavity body 8, position are provided between spheroid 2 and valve body 1
Cavity body 8 is all provided with the two ends of the center of rotation axis of spheroid 2, the valve seat 3 is provided with annular boss near output end 102
4, the annular boss 4 is located in the cavity body 8, and the side of the annular boss 4 contacts with the spheroid 2, the annular
Boss 4 is arranged in parallel with the contact surface of annular boss 4 and the spheroid 2 away from the side of contact surface side.
The valve body 1 is provided with the blowing pipe 5 connected with the cavity body 8, and blowing pipe 5 is fixed by way of welding
It is connected on valve body 1, and blowing pipe 5 is provided in being close at the valve seat 3 of the side of output end 102, and the blowing pipe 5 is away from institute
The one end for stating valve body 1 is provided with flange terminal pad 6, and blind flange 7 is fixedly connected with the flange terminal pad 6.
When in use, the input 101 first in valve body 1 is input into high-pressure medium to above-mentioned sealing structure of high-pressure ball valve, and
Now ball valve is closed, that is, passage 201 on spheroid 2 is not connected with input 101 and output end 102, when defeated
When entering 101 3 seal failure of valve seat of end, high-pressure medium is entered into cavity body 8, and the valve seat of output end 102 is reached in cavity body 8
3, set because spheroid 2 is parallel to each other with the contact surface and annular boss 4 of annular boss 4 on valve seat 3 away from the side of the side of spheroid 2
Put, high-pressure medium acts on annular boss 4 can be by annular boss 4 and spheroid 2 away from the active force on the side on contact surface
Contact surface laminating is even closer, and now the active force of high-pressure medium all will apply on the contact surface, and will not be broken down into
Active force on other direction, improves the sealing property of valve seat 3；Due to having impurity in medium, long-term use can be in boss 4
Impurity is piled up at place, is removed by by seal plug, and the flange terminal pad 6 of blowing pipe 5 is connected into bubbling device, in cavity body 8
The impurity of accumulation is purged, and prevents the sealing property of impurity effect valve seat 3, and blind flange 7 seals up blowing pipe 5.
Above-mentioned is enlightenment according to desirable embodiment of the present utility model, by above-mentioned description, relevant staff
Various changes and amendments can be carried out in the range of without departing from this utility model technological thought completely.This practicality
New technical scope is not limited to the content on specification, it is necessary to determine its according to right technical
Scope.
Claims (2)
1. a kind of sealing structure of high-pressure ball valve, including valve body (1), one end of the valve body (1) is provided with input (101), described
The other end of valve body (1) is provided with output end (102), and the input (101) connects with output end (102), in the valve body (1)
Be provided with spheroid (2), the spheroid (2) with passage (201), the passage (201) of the spheroid (2) and input (101) and defeated
Go out end (102) connection, two valve seats (3) are provided with the valve body (1) and input (101) and output end is located at respectively
(102), two valve seats (3) contact with spheroid (2), it is characterised in that：Two valve seats (3), spheroid (2) and valve bodies
(1) it is provided with cavity body (8) between, the valve seat (3) of two valve seats (3) positioned at output end (102) side is provided with convex annular
Platform (4), in the cavity body (8), side and the spheroid (2) of the annular boss (4) connect the annular boss (4)
Touch, the annular boss (4) is mutual with the contact surface of annular boss (4) and the spheroid (2) away from the side of contact surface side
It is arranged in parallel.
2. sealing structure of high-pressure ball valve according to claim 1, it is characterised in that：The valve body (1) be provided with it is described
The blowing pipe (5) of cavity body (8) connection, the blowing pipe (5) is provided with flange terminal pad (6) away from one end of the valve body (1),
Blind flange (7) is fixedly connected with the flange terminal pad (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402751.7U CN206299828U (en) | 2016-12-20 | 2016-12-20 | Sealing structure of high-pressure ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402751.7U CN206299828U (en) | 2016-12-20 | 2016-12-20 | Sealing structure of high-pressure ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206299828U true CN206299828U (en) | 2017-07-04 |
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ID=59213984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621402751.7U Active CN206299828U (en) | 2016-12-20 | 2016-12-20 | Sealing structure of high-pressure ball valve |
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| Country | Link |
|---|---|
| CN (1) | CN206299828U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140041A (en) * | 2018-10-19 | 2019-01-04 | 惠州海卓科赛医疗有限公司 | Valve plug, high-pressure pump structure and valve plug encapsulating method |
-
2016
- 2016-12-20 CN CN201621402751.7U patent/CN206299828U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140041A (en) * | 2018-10-19 | 2019-01-04 | 惠州海卓科赛医疗有限公司 | Valve plug, high-pressure pump structure and valve plug encapsulating method |
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