CN220930227U - Flat gate valve capable of removing slag impurities and preventing valve core from blocking - Google Patents
Flat gate valve capable of removing slag impurities and preventing valve core from blocking Download PDFInfo
- Publication number
- CN220930227U CN220930227U CN202322625657.4U CN202322625657U CN220930227U CN 220930227 U CN220930227 U CN 220930227U CN 202322625657 U CN202322625657 U CN 202322625657U CN 220930227 U CN220930227 U CN 220930227U
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- Prior art keywords
- valve
- valve seat
- sealing groove
- channel
- valve core
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- 239000002893 slag Substances 0.000 title claims abstract description 36
- 239000012535 impurity Substances 0.000 title claims abstract description 22
- 230000000903 blocking effect Effects 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 54
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000010926 purge Methods 0.000 claims abstract description 7
- 238000010008 shearing Methods 0.000 claims abstract description 6
- 239000010865 sewage Substances 0.000 claims description 17
- 238000009826 distribution Methods 0.000 claims description 4
- 239000011273 tar residue Substances 0.000 abstract description 8
- 238000004939 coking Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 5
- 230000001632 homeopathic effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model belongs to the technical field of valve control, and particularly relates to a flat-mounted gate valve capable of removing slag and preventing valve core from blocking. The valve solves the problems that part of tar residue is accumulated at the valve seat and residue contained in fluid is deposited and stuck in the sealing groove of the valve seat of the valve in the gate valve used in the coking industry at present. The valve core with the cutting edge and the valve seat sealing groove form a shearing type, and sundries can be sheared and shoveled when the valve is closed. The concave-convex type blow-down channel, the collecting funnel and the slag liquid discharging pipeline are arranged at the lower part of the valve seat sealing groove, so that the steam fast interface valve at the outer side of the concave-convex type blow-down channel can be periodically opened to purge slag liquid, and slag impurities at the periphery of the valve seat channel and the valve seat sealing groove are thoroughly removed. The plane of the valve core and the valve seat sealing groove has an inclined included angle with the fluid flow direction, and the transported fluid can clean slag impurities in the valve seat sealing groove in a homeopathic manner. The inlet section, the outlet section and the valve seat channel of the valve are in an splayed layout, so that tar residues cannot be deposited at the joint of the valve core and the valve seat channel to solidify.
Description
Technical Field
The utility model belongs to the technical field of valve control, and particularly relates to a flat-mounted gate valve capable of removing slag and preventing valve core from blocking.
Background
A gate valve is one of the most commonly used shut-off valves, mainly for switching on or shutting off the medium in a pipeline. The pressure, temperature and diameter range of the application are very large, and the device is especially applied to medium and large diameter pipelines, and is one of important devices for controlling gas pipelines in the coking industry. The coking gas contains dreggy impurities, particularly tar slag is often accumulated and solidified at the valve seat of a horizontally installed gate valve, when the valve is closed, the phenomenon that the valve is not tightly closed due to the slag impurities blocking valve core often occurs, and the gas is leaked when an electric blind plate valve acts due to the fact that the gate valve is not tightly closed, so that the case of fire is as good as everywhere.
Specifically, the gate valve used in the coking industry at present mainly has the following technical problems: after the valve is closed for a long time, part of tar residues are accumulated at the valve seat, and the valve core is hardened and bonded for a long time, so that the valve is difficult to open; if the valve is opened for a long time, the residue and impurities contained in the fluid are deposited and adhered in the sealing groove of the valve seat of the valve, when the valve is closed, the residue and impurities are pressed down by the valve core and accumulated in the groove at the bottom of the valve seat, the residue and impurities have no discharging channel, and finally the valve core is blocked, so that the valve is not tightly closed, and fluid is leaked. Part of valve manufacturers design a slag impurity discharge hole at the bottom of the valve, but the effect is not satisfactory.
The valve core (valve plate) of the gate valve is generally in a plate-shaped structure, and two surfaces of the valve core perpendicular to the water flow direction are called valve core end surfaces.
Disclosure of Invention
The utility model provides a flat-mounted gate valve capable of removing slag and preventing valve core from blocking, which aims to solve the technical problems that a gate valve used in the coking industry at present has part of tar slag and impurities accumulated at a valve seat to cause difficulty in opening the valve and the slag and impurities contained in fluid are deposited and adhered in a sealing groove of the valve seat to cause the valve to be closed inaccurately.
The utility model is realized by adopting the following technical scheme: a flat gate valve capable of removing slag and preventing a valve core from being blocked comprises a valve body and a valve core, wherein a fluid channel in the valve body is divided into a valve inlet section, a valve seat channel section and a valve outlet section which are sequentially communicated, the valve core is arranged opposite to the valve seat channel section, and a valve seat sealing groove corresponding to the valve core is formed in the bottom of the valve seat channel section; the valve inlet section, the valve seat channel section and the valve outlet section are in an splayed layout, namely, the valve seat channel section is horizontal, and the valve inlet section and the valve outlet section are respectively connected at two ends of the valve seat channel section in an inclined downward manner.
The utility model changes the horizontal straight-through of the inlet section, the outlet section and the valve seat channel section of the valve into the 'splayed' layout, namely the valve seat channel section is in a high position, and the inlet and the outlet are relatively in a low position, so the design has the advantages that: after the valve is closed, tar residues cannot be deposited at the joint of the valve core and the valve seat channel section to solidify, and the valve core and the valve seat sealing groove can be prevented from being adhered to cause difficult opening. In the valve opening state, the fluid enters the valve to be in a jump and fly-over turbulence state, and slag is not easy to accumulate at the sealing groove of the valve seat.
Further, the valve core end face and the valve seat sealing groove trend are not perpendicular to the axis of the valve seat channel section. The valve core and valve seat sealing groove planes of a common gate valve are in a state of being 90 degrees with the fluid direction, namely in a vertical state, and the valve is changed into a non-vertical state, namely the planes of the valve core and the valve seat sealing groove are inclined with the fluid direction, so that the valve has the advantages that: after the valve seat sealing groove has a certain included angle with the direction of the fluid, the fluid can generate a certain scouring force along the valve seat sealing groove, so that the residue can be effectively prevented from staying and accumulating at the valve seat sealing groove.
Furthermore, the bottom of the valve seat sealing groove is provided with a concave-convex sewage draining channel; the concave-convex type sewage draining channel extends along one narrow side edge of the valve seat sealing groove to the other narrow side edge of the valve seat sealing groove through the bottom of the valve seat sealing groove, but does not cover the whole valve seat sealing groove; the collecting funnel and the slag discharging liquid pipeline are connected below the center of the bottom of the concave-convex sewage discharging channel. The highest positions of the two sides of the concave-convex type sewage disposal channel are provided with a purging steam fast interface.
The valve core is pressed downwards to remove slag and impurities adhered in the valve seat sealing groove and enter the concave-convex type sewage draining channel, and the steam is blown into a water seal at the lower part of the valve through a collecting funnel and a slag discharging pipeline.
Furthermore, the front end face and the rear end face of the lower part of the valve core are made into rigid cutting edges which can form shearing with the valve seat sealing groove, and the cutting edges of the valve core can be matched with the top edge of the valve seat sealing groove when the valve is closed, so that tar residues can be directly cut off and shoveled off when the valve is encountered.
The utility model has the beneficial effects that: the flat gate valve capable of removing slag and preventing the valve core from being blocked can well solve the problem of blocking the valve core of the old gate valve:
1. The valve core with the cutting edge and the valve seat sealing groove form a shearing type, and sundries can be sheared and shoveled off when the valve is closed.
2. The concave-convex type blow-down channel, the collecting funnel and the slag liquid pipeline are arranged at the lower part of the valve seat sealing groove, the steam fast interface valve at the outer side of the concave-convex type blow-down channel can be periodically opened to purge and timely discharge slag liquid, slag impurities at the periphery of the valve seat channel and the valve seat sealing groove are thoroughly removed, and the valve core can not be blocked when the valve is opened or closed to lift the valve core.
3. The plane of the valve core and the valve seat sealing groove has an inclined included angle with the fluid flow direction, the conveyed fluid can clean slag impurities in the valve seat sealing groove, and even if slag impurities are deposited in the fluid flow process, the slag impurities can fall into a sewage draining channel along the groove, and then are discharged through a collecting funnel.
4. In the valve closing state, the valve seat channel is in a relatively high position, tar residues cannot be deposited at the joint of the valve core and the valve seat channel to solidify, so that the valve core and the valve seat sealing groove can be prevented from being difficult to open due to adhesion, and even if the tar residues adhere the valve core in the valve seat groove, the problem of opening can be well eliminated by opening the steam quick interface valve at the outer side of the concave-convex type sewage disposal channel, purging and heating the tar residues to soften.
Drawings
FIG. 1 is a schematic cross-sectional view of a gate valve according to the present utility model.
Fig. 2 is a schematic top sectional view of the inside of the gate valve.
FIG. 3 is a schematic view of the drain and steam fast interface structure.
FIG. 4 is a side view of a valve seat channel segment portion.
The device comprises a 1-valve inlet section, a 2-valve outlet section, a 3-valve seat channel section, a 4-valve core, a 5-valve seat sealing groove, a 6-concave-convex type sewage draining channel, a 7-purging steam fast interface and an 8-residue collecting funnel.
Detailed Description
The technical scheme of the utility model relates to a flat gate valve capable of removing slag impurities and preventing valve core from blocking, which is characterized in that the following structure of the valve is improved: the valve body is additionally provided with a concave-convex type blow-down channel 6, a blowing steam fast interface 7 of the blow-down channel, a slag impurity collecting funnel 8 and the like; the other structures of the valve still adopt general designs, and a deslagging pipeline and a water seal are arranged at the bottom of the valve, so that the description is omitted.
Example 1
As shown in figure 1, the flat gate valve capable of removing residues and preventing the valve core from being blocked comprises a valve body and a valve core 4, wherein a fluid channel in the valve body is divided into a valve inlet section 1, a valve seat channel section 3 and a valve outlet section 2 which are sequentially communicated, the valve core 4 is arranged opposite to the valve seat channel section 3, and a valve seat sealing groove 5 corresponding to the valve core 4 is formed in the bottom of the valve seat channel section 3; the valve inlet section 1, the valve seat channel section 3 and the valve outlet section are in an splayed layout, namely, the valve seat channel section 3 is horizontal, and the valve inlet section 1 and the valve outlet section 2 are respectively connected at two ends of the valve seat channel section 3 in an inclined downward mode. The valve does not need to distinguish between inlet and outlet directions.
Example 2
Fig. 2 is a schematic top view cross-section structure of the inside of the gate valve, and as shown in fig. 2, the trend of the end face of the valve core 4 and the valve seat sealing groove 5 form an included angle of 60-80 degrees, preferably 75 degrees with the axis of the valve seat channel section 3.
Example 3
As shown in figures 3 and 4, the bottom of the valve seat sealing groove 5 is provided with a concave-convex sewage disposal channel 6; the concave-convex type sewage drain 6 extends along one narrow side edge of the valve seat sealing groove 5 to the other narrow side edge of the valve seat sealing groove 5 through the bottom of the valve seat sealing groove 5, but does not cover the whole valve seat sealing groove 5; the highest positions of the two sides of the concave-convex type sewage disposal channel 6 are provided with a purging steam fast interface 7; the lower part of the bottom center of the concave-convex type sewage disposal channel 6 is connected with a slag impurity collecting funnel 8 and a slag liquid pipeline. Preferably, as can be seen from fig. 4, the distribution range of the concave-convex type sewage draining channel 6 is that 60 degrees are drawn from the center of the valve seat sealing groove 5 to the bottom center line to the two narrow side directions respectively, and the total radian range is 120. The concave-convex type sewage drain channel is called because the channel is arranged at the bottom of the sealing groove of the valve seat and is of a groove structure, and the part is obviously protruded out of the bottom of the valve body when being seen outside the valve body, so the channel is called as a concave-convex type sewage drain channel.
Example 4
The front end face and the rear end face of the lower part of the valve core 4 are quenched to form rigid cutting edges which can form shearing with the valve seat sealing groove 5, the distribution range of the rigid cutting edges is approximately the range of 120 radians of the lower part of the valve core, and the distribution range is approximately the range that the valve core rotates 60 degrees towards the front end face and the rear end face of the valve core respectively from the center of the valve core close to the bottom, so that the valve core can be matched with the valve seat sealing groove 5 better to cut and remove impurities.
The scheme of the embodiments of the utility model has the advantages of exquisite design, simple and reasonable structure, low production and manufacturing cost and good use effect, and is suitable for popularization in industry.
Claims (8)
1. A flat gate valve capable of removing slag and preventing valve core from blocking comprises a valve body and a valve core (4), wherein a fluid channel in the valve body is divided into a valve inlet section (1), a valve seat channel section (3) and a valve outlet section (2) which are sequentially communicated, the valve core (4) is arranged opposite to the valve seat channel section (3), and a valve seat sealing groove (5) corresponding to the valve core (4) is formed in the bottom of the valve seat channel section (3); the valve is characterized in that the valve inlet section (1), the valve seat channel section (3) and the valve outlet section are in an splayed layout, namely, the valve seat channel section (3) is horizontal, and the valve inlet section (1) and the valve outlet section (2) are respectively connected at two ends of the valve seat channel section (3) in an inclined downward mode.
2. A flush gate valve with the capability of removing slag and preventing the blocking of a valve core as claimed in claim 1, wherein the end face of the valve core (4) and the valve seat sealing groove (5) run in a direction non-perpendicular to the axis of the valve seat channel section (3).
3. A flush gate valve with the capability of removing slag and preventing the blockage of a valve core as claimed in claim 2, wherein the end face of the valve core (4) and the direction of a valve seat sealing groove (5) form an included angle of 60-80 degrees with the axis of a valve seat channel section (3).
4. A flat gate valve capable of removing residue and preventing valve core blocking according to any one of claims 1-3, characterized in that a concave-convex type blow-down channel (6) is arranged below the valve seat sealing groove (5); the concave-convex type sewage draining channel (6) extends along one narrow side edge of the valve seat sealing groove (5) to the other narrow side edge of the valve seat sealing groove (5) through the bottom of the valve seat sealing groove (5), but does not cover the whole valve seat sealing groove (5); the lower part of the bottom center of the concave-convex type sewage disposal channel (6) is connected with a slag impurity collecting funnel (8) and a slag liquid pipeline.
5. The flush gate valve capable of removing residue and preventing valve core from being blocked as claimed in claim 4, wherein the distribution range of the concave-convex type blow-down channel (6) is a range of 120 radians drawn from the center of the valve seat sealing groove (5) to the two narrow side directions respectively.
6. The flat gate valve capable of removing slag and preventing valve core blocking as claimed in claim 4, wherein the highest positions of two sides of the concave-convex type blow-down channel (6) are provided with a purging steam fast interface (7).
7. A flush gate valve for removing residue and preventing the jamming of a valve core according to any one of claims 1 to 3, wherein the front and rear end surfaces of the lower part of the valve core (4) are formed with rigid cutting edges capable of shearing with the valve seat sealing grooves (5).
8. A flat gate valve capable of removing residue and preventing the valve core from being blocked as claimed in claim 4, wherein the front and rear end surfaces of the lower part of the valve core (4) are made into rigid cutting edges capable of forming shearing with the valve seat sealing groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322625657.4U CN220930227U (en) | 2023-09-27 | 2023-09-27 | Flat gate valve capable of removing slag impurities and preventing valve core from blocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322625657.4U CN220930227U (en) | 2023-09-27 | 2023-09-27 | Flat gate valve capable of removing slag impurities and preventing valve core from blocking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220930227U true CN220930227U (en) | 2024-05-10 |
Family
ID=90965101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322625657.4U Active CN220930227U (en) | 2023-09-27 | 2023-09-27 | Flat gate valve capable of removing slag impurities and preventing valve core from blocking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220930227U (en) |
-
2023
- 2023-09-27 CN CN202322625657.4U patent/CN220930227U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |