CN203594836U - Combined type three-way ball valve - Google Patents
Combined type three-way ball valve Download PDFInfo
- Publication number
- CN203594836U CN203594836U CN201320608817.8U CN201320608817U CN203594836U CN 203594836 U CN203594836 U CN 203594836U CN 201320608817 U CN201320608817 U CN 201320608817U CN 203594836 U CN203594836 U CN 203594836U
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- Prior art keywords
- valve
- pressure channel
- ball
- low
- ball valve
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000000945 filler Substances 0.000 claims description 9
- 238000009738 saturating Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to a combined type three-way ball valve including a valve body, a high-pressure channel, a low-pressure channel, and a middle channel are arranged in the valve body, the three channels are communicated with a middle cavity of the valve body, a valve ball sealing pair for controlling the opening and closing of the high-pressure channel is arranged in the high-pressure channel, and an inverted valve sealing pair for controlling the opening and closing of the low-pressure channel is arranged on the low-pressure channel. According to the utility model, the closing and the opening of the low-pressure channel are controlled by means of the closing and the opening of the high-pressure channel, when the high-pressure channel is closed, a high-pressure medium presses a valve ball toward a ball valve seat in the valve ball, the greater the pressure, the sealing force between the valve ball and the ball valve seat is greater, so that the leakage of the high-pressure medium to the middle channel via the ball valve sealing pair can be prevented, and therefore, the combined type three-way ball valve can be applied to a three-way ball valve in the prior art or other valves with same functions.
Description
Technical field
The utility model relates to a kind of valve, and particularly a kind of Combined type tee joint ball valve can be used for substituting tee ball valve under prior art or the valve of other congenerous.
Background technique
Existing L-type triple valve, valve generally has two middle circulation passage that flow to passage and an outflow, three channel connections middle chamber in valve body, and in described middle chamber, be provided with threeway valve ball, by the angle of swing of valve rod control valve ball, can make one of them flow to that passage is communicated with middle circulation passage and another flows to passage and middle circulation passage disconnects, reach the object of distribution media, under actual conditions, passing into two pressure that flow to the medium in passage is not wait, between them, there is certain pressure difference, use after a period of time at valve, the assembly pretightening power of valve ball weakens, between valve ball and valve seat, just there will be gap, when blocking high-pressure channel one side, while only having low-pressure channel one side to open, valve ball is tightly attached on the valve seat at low-pressure inlet place under the pressure of high-pressure medium, high-pressure medium can be by the slot leakage at valve ball and high pressure entry place in middle circulation passage.
Model utility content
The problem existing in order to solve prior art, the purpose of this utility model is to provide a kind of can prevent that high-pressure medium from leaking into the Combined type tee joint ball valve of middle circulation passage.
The technological scheme that the utility model adopts is:
A kind of Combined type tee joint ball valve, comprise valve body, in described valve body, be provided with a high-pressure channel, a low-pressure channel and a middle circulation passage, article three, described passage is all communicated with the middle chamber of described valve body, in described high-pressure channel, be provided with the valve ball sealing pair opening and closing for controlling high-pressure channel, described low-pressure channel is provided with the check valve seal pair opening and closing for controlling low-pressure channel.
Described ball valve sealing pair can comprise valve ball and ball valve seat, and described valve ball and ball valve seat are provided with the sealing surface cooperatively interacting.
The quantity of described ball valve seat can be two, lays respectively at the inside and outside both sides of described valve ball.
In described high-pressure channel, can be provided with the annular stage structure for installing and fix described ball valve seat, on described high-pressure channel, can be provided with the ball valve fixed sleeving screwing in from its outer end, the inner end of described ball valve fixed sleeving contacts with the described ball valve seat that is positioned at described valve ball outside, between described ball valve fixed sleeving and described high-pressure channel tube wall, can be provided with seal ring.
The utility model can also comprise valve rod, the valve body upper end that described high-pressure channel is provided with described valve ball is provided with valve gap, described valve rod is through the stem through-hole on described valve gap, its lower end connects described valve ball, upper end is positioned at outside described valve body, described valve stem passage is provided with the stuffing box for sealing, and in described stuffing box, is filled with filler, and the upper end of described stuffing box is provided with the filler pressing sleeve for suppressing described filler.
Preferably, described check valve seal pair comprises non-return flap and Boilor check valve seat, described Boilor check valve seat in a tubular form, the valve body tube wall of its outer end and described low-pressure channel is tightly connected, between the valve body tube wall of its main body and described low-pressure channel, leave gap, port, inner end is provided with sealing surface, described non-return flap is inner end and is provided with the tubular of Closed End, be enclosed within described Boilor check valve seat from the inner end of described Boilor check valve seat, with described Boilor check valve seat and described low-pressure channel tube wall Spielpassung, the inner side of the Closed End of described non-return flap inner end is provided with the sealing surface supporting with the sealing surface of described Boilor check valve seat.
Conventionally, on the sidewall of described non-return flap, can be provided with axially extended groove.
The quantity of described groove can be several, distributes along even circumferential.
The mode that the valve body tube wall of described Boilor check valve seat outer end and described low-pressure channel is tightly connected can be provided with outside thread and be connected on the valve body tube wall of described low-pressure channel by the internal thread rotation on described low-pressure channel valve body tube wall for the outer side surface of described Boilor check valve seat outer end, between the valve body tube wall of described Boilor check valve seat outer end and described low-pressure channel, is provided with seal ring.
All establish the port of described high-pressure channel, low-pressure channel and middle circulation passage can flange.
Working principle of the present utility model is: owing to being provided with respectively ball valve sealing pair and check valve seal pair in high-pressure channel and low-pressure channel, rotating valve ball by valve rod opens the ball valve sealing pair of high-pressure channel, high-pressure channel is communicated with middle circulation passage, high-pressure medium is flow through valve, non-return flap in low-pressure channel is closed low-pressure channel under the differential pressure action of high low pressure medium simultaneously, make thus high-pressure channel in opening state and low-pressure channel in closed condition, rotating valve ball by valve rod closes the ball valve sealing of high-pressure channel, high-pressure medium can not flow through valve, non-return flap in low-pressure channel departs from low pressure valve seat under the pressure of low piezodielectric simultaneously, make low piezodielectric be flow through valve, make thus high-pressure channel in closed condition and low-pressure channel in opening state, realize the object of three-way valve.
The beneficial effects of the utility model are:
(1) owing to the threeway valve ball of middle chamber being become to the two-way valve ball of high-pressure channel, and the closing and opening of opening and closing control low-pressure channel by high-pressure channel, in the time that high-pressure channel is closed, valve ball is pressed to the ball valve seat in valve ball by high-pressure medium, sealing force between the larger valve ball of pressure and this ball valve seat is just larger, has avoided thus high-pressure medium leakage to middle circulation passage by ball valve sealing pair.
(2) owing to being provided with two ball valve seats, be conducive to the stress balance of valve ball, convenient operation.
(3) owing to being provided with at low-pressure channel for check valve seal pair, just can automatically control the on off operating mode of low-pressure channel by the on off operating mode of valve rod control high-pressure channel, facilitate thus operation, and be conducive to simplify product structure.
(4), owing to having adopted the Boilor check valve seat of tubular, be convenient to processing and install.
(5) due to the saturating groove arranging on the sidewall at non-return flap, realize the connection of medium channel by saturating groove, be not only conducive to save thus materials consumption, convenient processing, also helps the reliability that guarantees that low-pressure channel is communicated with, and reduces the resistance of low-pressure channel.。
(6) owing to being all provided with flange in each passage outer end, be convenient to be connected with pipeline.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A sectional view of the present utility model.
Embodiment
Referring to Fig. 1 and Fig. 2, the utility model relates to a kind of Combined type tee joint ball valve, comprise valve body 1, in described valve body, be provided with a high-pressure channel, a low-pressure channel and a middle circulation passage, article three, described passage is all communicated with the middle chamber of described valve body, in described high-pressure channel, be provided with the valve ball sealing pair opening and closing for controlling high-pressure channel, described low-pressure channel is provided with check valve seal pair.In the time that high-pressure channel communicates with low-pressure channel, because high-pressure medium is greater than low piezodielectric to the secondary applied pressure of check valve seal to the secondary applied pressure of check valve seal, check valve seal pair moves until the end that flows to of safety check and low-pressure channel forms sealing to low-pressure channel, now just only have high-pressure channel to be communicated with middle circulation passage, when close in high-pressure channel ball valve time, rotate ball valve, block high-pressure channel, check valve seal pair is only subject to the pressure of low piezodielectric to it, check valve seal pair moves to high-pressure channel, low-pressure channel is communicated with middle circulation passage, now, ball valve is subject to high-pressure medium and the low piezodielectric pressure to it simultaneously, and high-pressure medium is greater than the pressure of low piezodielectric to ball valve to the pressure of ball valve, make on the ball valve valve seat that is pressed in ball valve outlet port tightly, form sealing, prevent along with valve is using the phenomenon that after certain hour, pretightening force causes high-pressure medium to leak after disappearing.
Described ball valve sealing pair can comprise valve ball 2 and ball valve seat 3, and described valve ball and ball valve seat are provided with the sealing surface cooperatively interacting.
The quantity of described ball valve seat can be two, lays respectively at the inside and outside both sides of described valve ball.Valve ball sealing pair is valve ball and two valve seats, and under the state at high-pressure channel in closing, valve ball and two valve seats seal simultaneously, prevent the leakage of high-pressure medium.
In described high-pressure channel, can be provided with the annular stage structure for installing and fix described ball valve seat, on described high-pressure channel, can be provided with the ball valve fixed sleeving screwing in from its outer end, the inner end of described ball valve fixed sleeving contacts with the described ball valve seat that is positioned at described valve ball outside, between described ball valve fixed sleeving and described high-pressure channel tube wall, can be provided with seal ring, to strengthen sealing effect.
Valve rod 4 is for connecting and control valve ball, the valve body tube wall of described high-pressure channel is provided with valve gap, described valve rod is through the stem through-hole on described valve gap, its lower end connects described valve ball, upper end is positioned at outside described valve body, described valve stem passage is provided with the stuffing box for sealing, and in described stuffing box, is filled with filler, and the upper end of described stuffing box is provided with the filler pressing sleeve for suppressing described filler.
Described check valve seal pair comprises non-return flap 6 and Boilor check valve seat 5, preferably, described Boilor check valve seat in a tubular form, its outer end 7 is tightly connected with the valve body tube wall of described low-pressure channel, between the valve body tube wall of its main body and described low-pressure channel, leave gap, the entrance point of port, inner end 8(low-pressure channel) be provided with sealing surface, described non-return flap is inner end and is provided with the tubular of Closed End, be enclosed within described Boilor check valve seat from the inner end of described Boilor check valve seat, with described Boilor check valve seat and described low-pressure channel tube wall Spielpassung, the inner side surface of the Closed End of described non-return flap inner end is provided with the sealing surface supporting with the sealing surface of described Boilor check valve seat.The Boilor check valve seat of tubular is convenient to processing and is installed.
On described Boilor check valve seat, can be provided with along on its axial direction for forming the saturating groove of medium channel.The saturating groove arranging on Boilor check valve seat is convenient to low-pressure channel to be communicated with middle circulation passage.
The quantity of described groove can be several, distributes along even circumferential.
The mode that the valve body tube wall of described Boilor check valve seat outer end and described low-pressure channel is tightly connected can be provided with outside thread and be connected on the valve body tube wall of described low-pressure channel by the internal thread rotation on described low-pressure channel valve body tube wall for the outer surface of described Boilor check valve seat outer end, between the valve body tube wall of described Boilor check valve seat outer end and described low-pressure channel, is provided with seal ring.Be convenient to assembling of the present utility model.
All establish the port of described high-pressure channel, low-pressure channel and middle circulation passage can flange.Be convenient to be connected with pipeline.
Claims (10)
1. a Combined type tee joint ball valve, comprise valve body, in described valve body, be provided with a high-pressure channel, a low-pressure channel and a middle circulation passage, article three, described passage is all communicated with the middle chamber of described valve body, it is characterized in that being provided with the valve ball sealing pair opening and closing for controlling high-pressure channel in described high-pressure channel, described low-pressure channel is provided with the check valve seal pair opening and closing for controlling low-pressure channel.
2. Combined type tee joint ball valve according to claim 1, is characterized in that described ball valve sealing pair comprises valve ball and ball valve seat, and described valve ball and ball valve seat are provided with the sealing surface cooperatively interacting.
3. Combined type tee joint ball valve according to claim 2, is characterized in that the quantity of described ball valve seat is two, lays respectively at the inside and outside both sides of described valve ball.
4. Combined type tee joint ball valve according to claim 3, it is characterized in that being provided with in described high-pressure channel the annular stage structure for installing and fix described ball valve seat, described high-pressure channel is provided with the ball valve fixed sleeving screwing in from its outer end, the inner end of described ball valve fixed sleeving contacts with the described ball valve seat that is positioned at described valve ball outside, between described ball valve fixed sleeving and described high-pressure channel tube wall, is provided with seal ring.
5. Combined type tee joint ball valve according to claim 4, characterized by further comprising valve rod, the valve body upper end that described high-pressure channel is provided with described valve ball is provided with valve gap, described valve rod is through the stem through-hole on described valve gap, its lower end connects described valve ball, and upper end is positioned at outside described valve body, and described valve stem passage is provided with the stuffing box for sealing, in described stuffing box, be filled with filler, the upper end of described stuffing box is provided with the filler pressing sleeve for suppressing described filler.
6. according to the Combined type tee joint ball valve described in arbitrary claim in claim 1-5, it is characterized in that described check valve seal pair comprises non-return flap and Boilor check valve seat, described Boilor check valve seat in a tubular form, the valve body tube wall of its outer end and described low-pressure channel is tightly connected, between the valve body tube wall of its main body and described low-pressure channel, leave gap, port, inner end is provided with sealing surface, described non-return flap is inner end and is provided with the tubular of Closed End, be enclosed within described Boilor check valve seat from the inner end of described Boilor check valve seat, with described Boilor check valve seat and described low-pressure channel tube wall Spielpassung, the inner side of the Closed End of described non-return flap inner end is provided with the sealing surface supporting with the sealing surface of described Boilor check valve seat.
7. Combined type tee joint ball valve according to claim 6, is characterized in that the sidewall of described non-return flap is provided with axially extended groove.
8. Combined type tee joint ball valve according to claim 7, is characterized in that the quantity of described groove is several, distributes along even circumferential.
9. Combined type tee joint ball valve according to claim 8, it is characterized in that mode that the valve body tube wall of described Boilor check valve seat outer end and described low-pressure channel is tightly connected is that the outer side surface of described Boilor check valve seat outer end is provided with outside thread and is connected on the valve body tube wall of described low-pressure channel by the internal thread rotation on described low-pressure channel valve body tube wall, is provided with seal ring between the valve body tube wall of described Boilor check valve seat outer end and described low-pressure channel.
10. Combined type tee joint ball valve according to claim 1, is characterized in that the port of described high-pressure channel, low-pressure channel and middle circulation passage is equipped with flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608817.8U CN203594836U (en) | 2013-09-30 | 2013-09-30 | Combined type three-way ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608817.8U CN203594836U (en) | 2013-09-30 | 2013-09-30 | Combined type three-way ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594836U true CN203594836U (en) | 2014-05-14 |
Family
ID=50675727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320608817.8U Expired - Fee Related CN203594836U (en) | 2013-09-30 | 2013-09-30 | Combined type three-way ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203594836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019008416A1 (en) * | 2017-07-06 | 2019-01-10 | Swiss Fire Protection Research & Development Ag | Device for propelling a material charge using a gas-phase medium under pressure |
-
2013
- 2013-09-30 CN CN201320608817.8U patent/CN203594836U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019008416A1 (en) * | 2017-07-06 | 2019-01-10 | Swiss Fire Protection Research & Development Ag | Device for propelling a material charge using a gas-phase medium under pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |