CN212804252U - Stop valve of disk seat - Google Patents
Stop valve of disk seat Download PDFInfo
- Publication number
- CN212804252U CN212804252U CN202021286737.1U CN202021286737U CN212804252U CN 212804252 U CN212804252 U CN 212804252U CN 202021286737 U CN202021286737 U CN 202021286737U CN 212804252 U CN212804252 U CN 212804252U
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- Prior art keywords
- valve
- sealing
- valve seat
- seat
- rod
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- 238000007789 sealing Methods 0.000 claims abstract description 43
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000005728 strengthening Methods 0.000 abstract description 3
- 208000035212 Ring chromosome 19 syndrome Diseases 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 208000033641 Ring chromosome 5 syndrome Diseases 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a stop valve of disk seat, include: a valve body and a valve cover; a lower cavity and an upper cavity are isolated from the interior of the valve body through a valve seat, and a cache structure is arranged in the interior of the upper cavity; the valve cover is connected to the top end of the upper chamber in a sealing mode, a valve rod is connected to the valve cover in a sealing sliding mode, a valve clack matched with the valve seat is detachably and fixedly connected to one end, extending to the upper chamber, of the valve rod, and a sealing reinforcing structure is arranged on the valve clack in the circumferential direction; the valve rod is characterized by further comprising an actuator, and the driving end of the actuator is in threaded connection with the free end of the valve rod. The utility model discloses in, through the sealed additional strengthening that sets up on the valve clack, carry out the dual seal protection to the disk seat, prevent the seepage flow of medium.
Description
Technical Field
The utility model relates to stop valve technical field especially involves a stop valve of disk seat.
Background
The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur. The fully open position of the shut-off valve is determined by the stroke of the valve clack.
The existing stop valve completes the medium plugging by matching the valve clack with the valve seat, but still has leakage risk and does not have the characteristic of multiple protection and leakage prevention.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a leakproofness of disk seat is guaranteed to the stop valve of disk seat, places the medium seepage flow.
The utility model provides a stop valve of disk seat, the stop valve of this disk seat includes: a valve body and a valve cover; wherein,
a lower cavity and an upper cavity are isolated from the interior of the valve body through a valve seat, and a cache structure is arranged in the interior of the upper cavity;
the valve cover is connected to the top end of the upper chamber in a sealing mode, a valve rod is connected to the valve cover in a sealing sliding mode, a valve clack matched with the valve seat is detachably and fixedly connected to one end, extending to the upper chamber, of the valve rod, and a sealing reinforcing structure is arranged on the valve clack in the circumferential direction;
the valve rod is characterized by further comprising an actuator, and the driving end of the actuator is in threaded connection with the free end of the valve rod.
Preferably, an inlet section and an outlet section are horizontally arranged on two sides of the valve body in an opposite mode, the inlet section is communicated with the lower cavity, and the outlet section is communicated with the upper cavity.
Preferably, a first chamfer surface is provided between the inlet section and the lower chamber.
Preferably, a second chamfer surface is provided between the upper chamber and the outlet section.
Preferably, the cross section of the buffer structure is in a shape of a capsule.
Preferably, the valve seat is provided with a slope facing the second chamfer surface and having an angle of 8-10 degrees.
Preferably, one end of the valve rod, which is positioned in the upper chamber, is connected with a conical rod, and the conical end of the conical rod is connected with a threaded section;
the valve flap comprises: the valve core, the gasket and the valve seat sealing piece are sleeved on the conical rod in sequence from high to low; the valve seat sealing piece is matched with the valve seat, and the threaded section penetrates through the valve core, the gasket and the valve seat sealing piece and is connected with a nut in a threaded mode.
Preferably, the seal reinforcing structure includes: the valve core is fixedly connected to the outer ring of the valve core in the circumferential direction, a sealing block with a chamfer is arranged on the surface of the outer ring facing the valve seat, and the sealing block with the chamfer is in sealing fit with the second chamfer surface and the buffer structure.
Preferably, the sealing block with the chamfer is an elastic rubber block.
The utility model discloses in, through the sealed additional strengthening that sets up on the valve clack, carry out the dual seal protection to the disk seat, prevent the seepage flow of medium.
Drawings
Fig. 1 is a schematic structural diagram of a stop valve of a valve seat provided by an embodiment of the present invention;
fig. 2 is an enlarged schematic view at a in fig. 1.
Reference numerals:
the valve comprises a valve body-1, a valve cover-2, an actuator-3, a valve rod-4, a sealing ring-5, a valve flap-6, an inlet section-7, an outlet section-8, a lower chamber-9, an upper chamber-10, a first chamfer surface-11, a second chamfer surface-12, a valve seat-13, a cache structure-14, a valve core-15, a gasket-16, a valve seat sealing piece-17, a nut-18, an outer ring-19 and a sealing block-20.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Firstly, in order to facilitate understanding of the stop valve of the valve seat provided in the embodiment of the present application, an application scenario of the stop valve is described first, and after the valve flap seals the valve seat, a single sealing structure of the stop valve cannot effectively block the problem of medium seepage.
The stop valve of the valve seat provided by the embodiment of the application is explained in the following with the attached drawings.
Referring collectively to fig. 1, the shutoff valve of the valve seat in the embodiment of the present application includes: a valve body 1 and a valve cover 2; this valve gap 2 passes through sealing washer 5 sealed valve body 1, and sealing sliding connection has valve rod 4 on the valve gap 2, and the tip detachable that valve rod 4 is located valve body 1 is connected with valve clack 6, and this valve clack 6 and the disk seat 13 in the valve body 1 carry out sealed cooperation, realize leading and damming of stop valve. In addition, in this embodiment, the actuator 3 is adopted to drive the valve rod 4 to move up and down to drive the valve flap 6 to move up and down, and the actuator 3 may adopt a pneumatic actuator 3 or an electric actuator 3, which are the prior art known to those skilled in the art, and therefore, redundant description is not repeated here.
With continued reference to fig. 2, a valve seat 13 for medium to flow through is horizontally disposed in the valve body 1, the valve seat 13 separates the interior of the valve body 1 into an upper chamber 10 and a lower chamber 9, and a buffer mechanism is disposed in the upper chamber 10. An inlet section 7 and an outlet section 8 are horizontally arranged on two sides of the valve body 1 oppositely, the inlet section 7 is communicated with the lower chamber 9, and the outlet section 8 is communicated with the upper chamber 10. When the stop valve is normally communicated with a medium, the medium enters the lower chamber 9 from the inlet section 7, and a first chamfer surface 11 of an integrated structure is arranged between the inlet section 7 and the lower chamber 9; a second chamfer surface 12 of an integrated structure is arranged between the outlet section 8 and the upper chamber 10. After a high-pressure medium enters the lower chamber 9 through the arranged first chamfer surface 11, the medium is guided upwards after contacting the first chamfer surface 11; after passing upwardly through the valve seat 13, the medium enters the upper chamber 10. The medium then passes through the valve seat 13 into the upper chamber 10. the upper chamber 10 is provided with a buffer structure 14 having a bladder-like cross section which acts as a buffer in the case of a high medium flow rate, this part of the medium circulating around the valve seat 13 directly into the outlet section 8. As the medium flows through the upper chamber 10 into and out of the port section 8, the medium is directed downwardly through the second chamfer 12; the smooth transition of the descending flow channel of the outlet section 8 is matched, so that the medium in the valve body 1 can be quickly emptied, and the pollution of an inner cavity caused by residual liquid in the valve body 1 is reduced. Thereby reducing the uneven pressure in the upper and lower chambers 9 caused by the reduction of the medium backflow and increasing the medium circulation.
With continued reference to fig. 1-2, the valve seat 13 of the present embodiment is provided with a chamfer facing the second chamfer 12 at an angle between 8 ° and 10 °. Preferably 8 deg.. One end of the valve rod 4 extending to the upper chamber 10 is detachably and fixedly connected with a valve clack 6 matched with a valve seat 13, and a sealing reinforcing structure is arranged on the valve clack 6 in the circumferential direction;
thereby making the fit between the valve flap 6 and the upper inclined surface of the valve seat 13 tighter. Specifically, one end of the valve rod 4, which is positioned in the upper chamber 10, is connected with a conical rod, and the conical end of the conical rod is connected with a threaded section;
the valve flap 6 includes: a valve core 15, a gasket 16 and a valve seat sealing piece 17 which are sleeved on the conical rod in sequence from high to low; wherein, valve seat sealing member 17 and valve seat 13 are mutually matched, and threaded section is threaded through valve core 15, gasket 16 and valve seat sealing member 17 and then is connected with nut 18. The valve clack 6 is formed by combining a valve core 15, a gasket 16 and a valve seat sealing piece 17, so that the valve rod 4 is pressed against the valve seat 13 after being lowered to a set height and is matched with an inclined plane on the valve seat 13, and the sealing performance is stronger.
Further, the seal reinforcement structure includes: the outer ring 19 is fixedly connected to the valve core 15 in the circumferential direction, a sealing block 20 with a chamfer is arranged on the surface of the outer ring 19 facing the valve seat 13, and the sealing block 20 with the chamfer is in sealing fit with the second chamfer surface 12 and the buffer structure 14. The chamfered sealing block 20 is an elastic rubber block. Therefore, in the shutoff state of the stop valve, the valve clack 6 is pressed on the valve seat 13 to realize primary sealing, and the sealing block 20 arranged in the circumferential direction is in friction pressing with the second chamfer surface 12 and the side edge of the buffer mechanism to further control the seepage of media.
The utility model discloses in, through the sealed additional strengthening that sets up on valve clack 6, carry out the dual seal protection to disk seat 13, prevent the seepage flow of medium.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A stop valve for a valve seat, comprising: a valve body and a valve cover; wherein,
a lower cavity and an upper cavity are isolated from the interior of the valve body through a valve seat, and a cache structure is arranged in the interior of the upper cavity;
the valve cover is connected to the top end of the upper chamber in a sealing mode, a valve rod is connected to the valve cover in a sealing sliding mode, a valve clack matched with the valve seat is detachably and fixedly connected to one end, extending to the upper chamber, of the valve rod, and a sealing reinforcing structure is arranged on the valve clack in the circumferential direction;
the valve rod is characterized by further comprising an actuator, and the driving end of the actuator is in threaded connection with the free end of the valve rod.
2. The stop valve of claim 1, wherein an inlet section and an outlet section are horizontally disposed on opposite sides of the valve body, the inlet section communicating with the lower chamber and the outlet section communicating with the upper chamber.
3. A valve seated in accordance with claim 2, wherein a first chamfered surface is provided between the inlet section and the lower chamber.
4. A stop valve of the valve seat of claim 3, wherein a second chamfered surface is provided between the upper chamber and the outlet section.
5. The valve of claim 4, wherein said relief structure is substantially bladder-shaped in cross-section.
6. The stop valve of claim 5, wherein said valve seat is provided with a chamfer facing said second chamfer at an angle of between 8 ° and 10 °.
7. The valved valve according to claim 6, wherein a tapered stem is connected to an end of said stem located in said upper chamber, said tapered stem having a threaded section attached to a tapered end thereof;
the valve flap comprises: the valve core, the gasket and the valve seat sealing piece are sleeved on the conical rod in sequence from high to low; the valve seat sealing piece is matched with the valve seat, and the threaded section penetrates through the valve core, the gasket and the valve seat sealing piece and is connected with a nut in a threaded mode.
8. The valved shut-off valve of the valve seat of claim 7, wherein said seal-enhancing structure includes: the valve core is fixedly connected to the outer ring of the valve core in the circumferential direction, a sealing block with a chamfer is arranged on the surface of the outer ring facing the valve seat, and the sealing block with the chamfer is in sealing fit with the second chamfer surface and the buffer structure.
9. The valved shut-off valve of claim 8, wherein said chamfered sealing block is a resilient rubber block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021286737.1U CN212804252U (en) | 2020-07-04 | 2020-07-04 | Stop valve of disk seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021286737.1U CN212804252U (en) | 2020-07-04 | 2020-07-04 | Stop valve of disk seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804252U true CN212804252U (en) | 2021-03-26 |
Family
ID=75099933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021286737.1U Active CN212804252U (en) | 2020-07-04 | 2020-07-04 | Stop valve of disk seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212804252U (en) |
-
2020
- 2020-07-04 CN CN202021286737.1U patent/CN212804252U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |