CN210600394U - Online linkage and isolation structure of switching valve - Google Patents
Online linkage and isolation structure of switching valve Download PDFInfo
- Publication number
- CN210600394U CN210600394U CN201921325184.3U CN201921325184U CN210600394U CN 210600394 U CN210600394 U CN 210600394U CN 201921325184 U CN201921325184 U CN 201921325184U CN 210600394 U CN210600394 U CN 210600394U
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- valve rod
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- sprocket
- rod nut
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- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses an online linkage of diverter valve and isolation structure is equipped with switching structure respectively on initiative diverter valve and driven diverter valve, including valve-stem nut, sprocket and shaft coupling, valve-stem nut cup joints outside the valve rod of valve, and its middle part is equipped with excircle stair structure, and the structural valve-stem nut connect hole of having seted up of round platform rank, and the sprocket cup joints in the valve-stem nut outside, leans on to connect excircle stair structure is last, sets up the sprocket connecting hole that matches with valve-stem nut connect hole on it, and the shaft coupling cup joints outside valve-stem nut and overlap joint on the sprocket, through the round pin of pegging graft in valve-stem nut connect hole and sprocket connecting hole, connects the three fixedly, and two sprockets pass through chain interconnect. The utility model discloses can realize the linkage of initiative diverter valve and driven diverter valve and the mutual switching of isolated state.
Description
Technical Field
The utility model relates to a diverter valve online linkage and isolation structure for linking diverter valve field.
Background
At present, no switching structure exists between a chain wheel and a valve rod nut of the traditional linkage switching valve in China, and the chain wheel is directly arranged on the valve rod nut through a key groove, a hexagon or threads. This structure does not have any problem when the switching valve is used alone. However, when 2 switching valves are linked with a sprocket through a chain (one of the valves acts, and the other valve acts simultaneously under the action of the chain and the sprocket), it is easy to happen that one valve is already opened (closed) in place, and the other switching valve is still not opened (closed) in place, so that the switching valve which is not opened (closed) in place generates an internal leakage condition, and the switching valve which is not opened (closed) in place is limited by the sprocket and the chain and cannot act continuously.
Conventional products now solve the above problems by two approaches. One way is to install a linkage structure, measure the linkage deviation between two valves, and adjust the linkage deviation by adding a gasket. The method has the advantages that the linkage structure needs to be repeatedly disassembled, measured and installed when being installed, time and labor are wasted, the efficiency is low, and the linkage switching valve is installed on a pipeline, and the chain is easy to loosen after long-term work, so that the driven switching valve still cannot be opened (closed) in place. Another solution is to provide a floating seat to compensate for the axial clearance of the valve stem. However, the floating space is small, the compensation range is limited, and the situation of large deviation cannot be met. In the use process, if the axial deviation is large due to abrasion, the situation of leakage cannot be avoided on site.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art, provide a diverter valve online linkage and isolation structure, it can realize that two switching valves carry out the mutual switching of linkage and isolation as required on line.
One technical scheme for achieving the above purpose is as follows: a switching valve on-line linkage and isolation structure comprises a driving switching valve and a driven switching valve, wherein switching structures are respectively arranged on the driving switching valve and the driven switching valve, and each switching structure comprises a valve rod nut, a chain wheel and a coupler;
the valve rod nut is sleeved outside a valve rod of the valve, trapezoidal threads are arranged on the inner side of the valve rod nut, the rotary motion of the valve rod nut is converted into the lifting motion of the valve rod, an outer circle step structure is arranged in the middle of the valve rod nut, and a pair of valve rod nut connecting through holes are symmetrically formed in the two sides of the valve rod nut above the outer circle step structure and used for connecting the valve rod nut with the chain wheel;
the chain wheel is sleeved on the outer side of the valve rod nut and abuts against the outer circle step structure, an even number of chain wheel connecting holes are formed in the chain wheel, the chain wheel connecting holes are arranged on a circumference with the center of the chain wheel as the center of a circle, and the radius of the circumference is equal to the distance from the valve rod nut connecting through hole to the center of the valve rod nut, so that when the chain wheel rotates on the valve rod nut, any two symmetrical chain wheel connecting holes can be matched with the valve rod nut connecting through hole;
the shaft coupling comprises a flat plate and a group of pins symmetrically arranged at two ends of the flat plate, the flat plate is sleeved outside the valve rod nut and is lapped on the outer circle stepped structure, and the pins are detachably inserted in the valve rod nut connecting through hole and the chain wheel connecting hole to connect and fix the valve rod nut connecting through hole and the chain wheel connecting through hole;
the hand wheel is arranged on the top of the valve rod nut;
the sprockets of the driving switching valve and the driven switching valve are connected with each other through a chain.
Further, the valve rod nut is provided with a clamp spring groove, a clamp spring is sleeved on the clamp spring groove, the clamp spring is used for axially limiting the flat plate of the coupler, and the coupler and the chain wheel are prevented from axially moving in a serial mode.
Furthermore, the chain wheel connecting holes are a group of uniformly distributed semicircular holes arranged on the edge of the inner circular ring of the chain wheel.
Still further, the valve rod nut connecting through hole is along the valve rod nut axial is passed the through-hole at valve rod nut border forms the semicircle orifice, the projection that this semicircle orifice is located with the arbitrary a set of at the ring edge in the sprocket the semicircle orifice combination of sprocket connecting hole forms complete round hole, and along with the rotation of sprocket, valve rod nut connecting through hole with the combination of sprocket connecting hole is adjustable wantonly.
The utility model discloses an online linkage of diverter valve and isolation structure is equipped with the switching structure respectively on initiative diverter valve and driven diverter valve, including valve-stem nut, sprocket and shaft coupling, valve-stem nut cup joints outside the valve rod of valve, and its middle part is equipped with excircle stair structure, and the structural valve-stem nut connect hole of having seted up of round platform rank, and the sprocket cup joints in the valve-stem nut outside, leans on to connect excircle stair structure is last, sets up the sprocket connecting hole that matches with valve-stem nut connect hole on it, and the shaft coupling cup joints outside valve-stem nut and overlap joint on the sprocket, through the round pin of pegging graft in valve-stem nut connect hole and sprocket connecting hole, connects the three fixedly, and two sprockets pass through chain interconnect. When the pins on the driving switching valve and the driven switching valve are inserted, the chain wheel and the valve rod nut are tightly connected and keep consistent relative motion, so that the driving switching valve and the driven switching valve are in a linkage state; when the pin of any one of the driving switching valve and the driven switching valve is not inserted, the corresponding chain wheel and the valve rod nut are in a relatively free state, so that the driving switching valve and the driven switching valve are in an isolated state. The utility model can switch the linkage state or isolation state of the active switching valve and the driven switching valve of the linkage switching valve, and carry out linkage switch valve when in linkage state; once the situation that the valve is not opened (closed) in place and internal leakage occurs, the valve can be switched to an isolation state, the driving switching valve or the driven switching valve is adjusted respectively, and the reliability of the system is improved.
Drawings
Fig. 1 is a schematic structural view of an on-line linkage and isolation structure of a switching valve according to the present invention;
fig. 2 is a schematic structural view of a valve stem nut of an online linkage and isolation structure of a switching valve according to the present invention;
fig. 3 is a schematic structural view of a sprocket of an online linkage and isolation structure of a switching valve according to the present invention;
fig. 4 is a schematic structural view of a coupling of an online linkage and isolation structure of a switching valve according to the present invention;
fig. 5 is a schematic diagram of an online linkage and isolation structure of a switching valve in a linkage condition of the switching valve according to the present invention;
fig. 6 is a schematic view of the on-line linkage and isolation structure of the switching valve in the independent working condition of the driven switching valve of the present invention;
fig. 7 is an enlarged detail view at a of fig. 6.
Detailed Description
Referring to fig. 1 to 7, in order to better understand the technical solution of the present invention, the following is described in detail by specific embodiments:
referring to fig. 1, the present invention provides an online linkage and isolation structure for a switching valve, which includes a driving switching valve 1 and a driven switching valve 2. The driving switching valve 1 and the driven switching valve 2 are respectively provided with a switching structure, and the switching structure comprises a valve rod nut 31, a chain wheel 32 and a coupling 33.
Take the switching structure of the active switching valve 1 as an example. Referring to fig. 1 and 2, the inner side of the bottom of the stem nut 31 is provided with trapezoidal threads, the middle of the stem nut 31 is provided with an outer stepped structure 311, the upper portion of the stem nut 31 is an outer hexagonal structure 313, a pair of stem nut connecting through holes 312 penetrating through the edge of the stem nut 31 are symmetrically formed on the stem nut 31 along the axial direction of the stem nut 31, and the stem nut connecting through holes 312 form a semicircular hole structure on the outer hexagonal structure 313 and the stem nut and are located above the outer stepped structure 311. The lower part of the valve rod nut 31 is provided with a sealing clamping structure 314, and the upper surface and the lower surface of the valve rod nut 31 are respectively provided with a sealing ring 12, so that the sealing effect is ensured when the valve rod nut 31 is connected with the valve cover. The valve rod nut 31 is sleeved outside the valve rod 11, the rotary motion of the valve rod nut 31 is converted into the lifting motion of the valve rod 11 through the trapezoidal threads, and the hand wheel 13 of the active switching valve 1 is connected with the valve rod nut 31 through a hexagonal structure.
Referring to fig. 1 and 3, the sprocket 32 is sleeved outside the stem nut 31 and abuts against the outer circular step structure 311, the sprocket is provided with an even number of sprocket connecting holes 321, and the sprocket connecting holes 321 are semicircular holes arranged at the edge of an inner circular ring of the sprocket 32. The chain wheel 32 can be adjusted at will to be installed, when the chain wheel 32 rotates on the valve stem nut 31, any set of two symmetrical chain wheel connecting holes 321 can be matched with the valve stem nut connecting through hole 312 to form a complete round hole.
Referring to fig. 1 and 4, the coupling 33 includes a plate 331 and a set of pins 332 symmetrically disposed at both ends of the plate 331, wherein the size of the pins 332 matches the diameter of the circular hole formed by the sprocket connecting hole 321 and the nut connecting through hole 312. The flat plate 331 is sleeved outside the valve stem nut 31 and lapped on the chain wheel 32, and the pin 332 is inserted into the valve stem nut connecting through hole 312 and the chain wheel connecting hole 321 to connect and fix the three. The valve rod nut 31 is further provided with a clamp spring groove, a clamp spring 34 is sleeved on the clamp spring groove, the clamp spring 34 axially limits the flat plate 331, and the shaft coupling 33 and the chain wheel 32 are prevented from axially moving.
The sprockets 32 of the drive switch valve 1 and the driven switch valve 2 are connected to each other by a chain 35.
The switching structure of the driven switching valve 2 is the same as that of the driving switching valve 1.
Fig. 5 and fig. 6 show the practical application of the on-line linkage and isolation structure of the switching valve of the present invention.
Referring to fig. 5, under the linkage condition of the switching valve, the sprocket is rotated to make any pair of sprocket connection holes 321 and nut connection through holes 312 form a complete circular hole, then the coupler 33 is inserted, and the pin 332 is inserted between the stem nut 31 and the sprocket 32 to fix, so that the sprocket 32, the stem nut 31 and the valve stem 11 are combined into a whole, and the common movement of the sprocket 32 and the valve stem 11 is realized. Then, a snap spring 34 is placed in a snap spring groove of the valve rod nut 31 to prevent the chain wheel 32 from moving up and down. The middle part of the valve rod 11 is matched with the limiting clamping plate 4, the valve rod 11 is prevented from rotating along with the chain wheel 32 or the hand wheel 13, the valve rod 11 can only do lifting motion, and the lower side of the valve rod 11 is connected with the valve clack and can drive the valve clack to do lifting motion. The driving switching valve 1 realizes linkage with the driven switching valve through a coupler and a chain wheel, and realizes reversing of working media.
Referring to fig. 6 and 7, when the valve flap of the driving switching valve 1 reaches the open/close position, the valve flap of the driven switching valve 2 may not reach the open/close position, and at this time, the driven switching valve 2 needs to be opened and closed continuously to ensure that the valve flap reaches the required open/close position, otherwise the driven switching valve 2 may leak. When the clutch is operated, the clamp spring on the valve rod nut of the driven switching valve is taken down firstly, the coupler is upwards slid along the small semicircular hole of the valve rod nut until the coupler is completely taken out of the chain wheel, at the moment, the valve rod nut is completely separated from the chain wheel, and the valve rod nut can freely rotate relative to the chain wheel. And rotating a hand wheel of the driven switching valve to drive the valve rod nut to rotate. The stem nut converts the rotary motion into a lifting motion of the valve stem through the trapezoidal threads. The valve rod drives the valve clack (serial number 12) to move up and down, so that the closing tightness of the driven switching valve is ensured. When the valve clack of the driven switching valve is opened (closed) in place, the angle of the chain wheel is finely adjusted, so that the small semicircular hole on the circumference of the small excircle of the valve rod nut is aligned with the small semicircular hole on the circumference of the inner hole of the chain wheel again. And moving the coupler downwards along the small semicircular hole groove of the excircle of the valve rod nut until the coupler is completely matched with the chain wheel. And a clamp spring is arranged in a clamp spring groove on the excircle of the valve rod nut, so that the driving switching valve and the driven switching valve are linked again, and linkage deviation adjustment is performed. On the contrary, when the valve clack of the driven switching valve reaches the opening and closing position, the valve clack of the active switching valve may not reach the opening and closing position, and at the moment, the active switching valve needs to be opened and closed continuously to ensure that the valve clack reaches the required opening and closing position, otherwise, the active switching valve has internal leakage. The independent operation mode of the driving switching valve is completely the same as the independent operation mode of the driven switching valve and the coupler resetting mode.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (4)
1. The utility model provides an online linkage of diverter valve and isolation structure, includes initiative diverter valve and driven diverter valve, its characterized in that is equipped with the switching structure respectively on initiative diverter valve and driven diverter valve, the switching structure includes valve-stem nut, sprocket and shaft coupling:
the valve rod nut is sleeved outside a valve rod of the valve, trapezoidal threads are arranged on the inner side of the valve rod nut, the rotary motion of the valve rod nut is converted into the lifting motion of the valve rod, an outer circle step structure is arranged in the middle of the valve rod nut, and a pair of valve rod nut connecting through holes are symmetrically formed in the two sides of the valve rod nut above the outer circle step structure and used for connecting the valve rod nut with the chain wheel;
the chain wheel is sleeved on the outer side of the valve rod nut and abuts against the outer circle step structure, an even number of chain wheel connecting holes are formed in the chain wheel, the chain wheel connecting holes are arranged on a circumference with the center of the chain wheel as the center of a circle, and the radius of the circumference is equal to the distance from the valve rod nut connecting through hole to the center of the valve rod nut, so that when the chain wheel rotates on the valve rod nut, any two symmetrical chain wheel connecting holes can be matched with the valve rod nut connecting through hole;
the shaft coupling comprises a flat plate and a group of pins symmetrically arranged at two ends of the flat plate, the flat plate is sleeved outside the valve rod nut and is lapped on the outer circle stepped structure, and the pins are detachably inserted in the valve rod nut connecting through hole and the chain wheel connecting hole to connect and fix the valve rod nut connecting through hole and the chain wheel connecting through hole;
a hand wheel is mounted on the top of the valve stem nut;
the sprockets of the driving switching valve and the driven switching valve are connected with each other through a chain.
2. The online linkage and isolation structure of a switching valve according to claim 1, wherein the stem nut is provided with a clamp spring groove, a clamp spring is sleeved on the clamp spring groove, and the clamp spring axially limits the flat plate of the coupler to prevent the coupler and the sprocket from axially moving.
3. The on-line linkage and isolation structure of a switching valve as claimed in claim 1, wherein the sprocket connecting holes are a set of uniformly distributed semicircular holes provided at the edge of an inner ring of the sprocket.
4. The on-line linkage and isolation structure of a switching valve according to claim 3, wherein the stem nut connecting through hole is a through hole passing through the edge of the stem nut along the axial direction of the stem nut to form a semicircular hole, the projection of the semicircular hole and the semicircular holes of any group of sprocket connecting holes on the inner circular ring edge of the sprocket form a complete circular hole, and the combination of the stem nut connecting through hole and the sprocket connecting holes can be adjusted freely along with the rotation of the sprocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921325184.3U CN210600394U (en) | 2019-08-15 | 2019-08-15 | Online linkage and isolation structure of switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921325184.3U CN210600394U (en) | 2019-08-15 | 2019-08-15 | Online linkage and isolation structure of switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210600394U true CN210600394U (en) | 2020-05-22 |
Family
ID=70692950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921325184.3U Withdrawn - After Issue CN210600394U (en) | 2019-08-15 | 2019-08-15 | Online linkage and isolation structure of switching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210600394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332364A (en) * | 2019-08-15 | 2019-10-15 | 上海阀门厂股份有限公司 | A kind of switching valve links online and isolation structure |
-
2019
- 2019-08-15 CN CN201921325184.3U patent/CN210600394U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332364A (en) * | 2019-08-15 | 2019-10-15 | 上海阀门厂股份有限公司 | A kind of switching valve links online and isolation structure |
| CN110332364B (en) * | 2019-08-15 | 2024-03-29 | 上海阀门厂股份有限公司 | Switching valve on-line linkage and isolation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200522 Effective date of abandoning: 20240329 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200522 Effective date of abandoning: 20240329 |