CN210290811U - Prevent hard sealed mud gate valve of long-pending easy dismouting of silt - Google Patents
Prevent hard sealed mud gate valve of long-pending easy dismouting of silt Download PDFInfo
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- CN210290811U CN210290811U CN201921298731.3U CN201921298731U CN210290811U CN 210290811 U CN210290811 U CN 210290811U CN 201921298731 U CN201921298731 U CN 201921298731U CN 210290811 U CN210290811 U CN 210290811U
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Abstract
The utility model relates to a prevent hard sealed mud gate valve of long-pending easy dismouting of silt, including valve body, disk seat, flashboard, deflector. The valve seat consists of two front valve seats and two rear valve seats, and the two rear valve seats are respectively placed in two opposite valve seat step holes in the valve cavity; the two guide plates are provided with through holes in the centers and are arranged between the two rear valve seats in parallel, the two front valve seats are respectively placed in the through holes in the centers of the two guide plates, the flashboard is arranged between the two guide plates, one surface of each front valve seat is tightly attached to the flashboard, the other surface of each front valve seat is tightly attached to one surface of the rear valve seat, and the other surface of each rear valve seat is tightly attached to the valve body and is in a sticking state. The utility model discloses through-flow hole on the flashboard is in complete closure state all the time when the valve is closed, and mud can't get into the valve pocket, has thoroughly avoided the mud siltation problem. The utility model discloses need not just can accomplish rapidly with the help of any specialized tool and dismantle and install, make the field maintenance change vulnerable part simple and convenient.
Description
Technical Field
The utility model relates to a mud gate valve in the oil field drilling manifold, especially a stifled silt deposit of preventing of hard seal mud gate valve and easy dismouting structure belong to the oil and equip the manufacturing and designing technical field.
Background
In an oil-gas field wellhead device and a Christmas tree, a slurry gate valve is a commonly used necessary pipeline control device and is mainly used for controlling slurry circulation and closing in oil-mine drilling slurry circulation system equipment. The working principle is as follows: the valve is opened and closed by changing the relative position between the gate plate and the valve seat. The flashboard is in a cuboid shape, two parallel sealing surfaces are arranged on the cuboid, a T-shaped groove for connecting the valve rod is arranged at the upper end of the cuboid, and an open semicircular hole perpendicular to the two sealing surfaces is arranged at the lower part of the cuboid; the two valve seats are respectively and closely attached to the two sealing surfaces of the flashboard, and when the solid part at the upper part of the flashboard descends to close the through hole on the valve seat, the valve is closed; when the semicircular hole at the lower part of the upper slide plate is coincided with the through hole on the valve seat, the valve is fully opened. The conventional slurry gate valve has the following disadvantages in practical use: because the closing of the gate valve is realized by descending the gate plate, a space for descending the gate plate must be reserved at the bottom in the valve body, and the space becomes a deposit through mud sediment in the gate valve. In order to solve the defects, people design a gate valve for preventing sludge accumulation, the structure of which is shown in the attached figure 1, a valve cover c is connected on a valve body a, a support d is connected on the valve cover c, and a valve rod e is screwed in the support d through threads; the gate plate f is connected to the lower end of the valve rod e in a floating mode, the valve seats b and b 'are annular bodies, the annular bodies are located in the fluid channel inside the valve body a and are tightly attached to the two sides of the gate plate f to form two closed sealing surfaces between the valve body a and the gate plate f, a closed through hole g perpendicular to the two sealing surfaces is formed in the gate plate f, the diameter of the through hole g is equal to that of a through hole in the valve seats b and b', the downward space of the gate plate at the bottom of the valve body a is completely isolated from the fluid channel under the action of the lower wall of the closed through hole g of the gate plate, and therefore slurry flowing through the flow channel of the valve body cannot enter the downward. The technical defects of the slurry gate valve with the structure still exist, namely: when the gate plate f descends to completely close the through hole on the valve seat, a part of slurry is undoubtedly left in the through hole g, the part of slurry is brought into the gate plate descending space at the bottom of the valve body a and is accumulated more and more, the part of slurry is dried and hardened to influence the normal descending of the gate plate, and the valve cannot be closed. There is a common drawback to the two gate valves in general, namely: the installation between the shutter f and the valve seats b and b ' is rather troublesome, and to place the shutter f between the valve seats b and b ', the valve seats b and b ' must be spread apart from each other by a special tool to be able to place the shutter f. Because the through-flow medium of the mud valve is mud, the working environment is severe, the sealing failure probability between the valve seat b and the flashboard f is very high, the valve seat b and the flashboard f are usually disassembled and replaced once in one or two months in practical application, and the high maintenance frequency and the use cost highlight the importance of the convenient disassembly and assembly of the valve. Therefore, the conventional slurry gate valve obviously has the technical defects in the two aspects.
Disclosure of Invention
The technique that exists to current hard seal mud gate valve is not enough, the utility model provides a prevent hard seal mud gate valve of long-pending easy dismouting of silt, it adds through the flashboard both sides and seals deflector and double-disk seat structure, realizes the purpose of no siltation and quick assembly disassembly in the valve.
In order to achieve the above purpose, the utility model discloses a following technical scheme is implemented: a kind of hard seal mud gate valve preventing siltation and easy to assemble and disassemble, including valve block, valve bonnet, support, valve stem, valve base, flashboard, deflector, there are valve chambers in the said valve block, there are inlet and outlet holes of the fluid at both ends of the valve chamber, and there are two opposite valve base step holes in the valve chamber and the intersection of inlet and outlet holes, and there are spaces for the flashboard to descend in the inferior part of the valve chamber; the valve cover is connected to the upper end of the valve body; the bracket is connected to the valve cover; the valve rod is screwed in the bracket through threads; the flashboard connect the lower extreme at the valve rod, and be equipped with through-flow hole, its characterized in that on the flashboard:
the valve seat consists of two front valve seats and two rear valve seats, and the front valve seats and the rear valve seats are both of annular structures;
the two rear valve seats are respectively placed in two opposite valve seat step holes of the valve cavity;
the two guide plates are arranged in parallel between the two rear valve seats in a mode of being vertical to the axis of the fluid inlet and outlet holes at the two ends of the valve cavity, and the bottom ends of the two guide plates are tightly attached to the bottom of a space for the flashboard to descend at the lower part of the valve cavity;
the two front valve seats and the two guide plates are equal in thickness, are respectively placed in through holes formed in the centers of the two guide plates and are in clearance fit with the through holes;
the flashboard is arranged between the two guide plates, the sealing surfaces on two sides of the flashboard are respectively clung to the sealing end surfaces of the two front valve seats, one surface of each front valve seat is clung to the flashboard, the other surface of each front valve seat is clung to one surface of each rear valve seat, the other surfaces of the two rear valve seats are clung to the valve body and are in a clung state, and when a through flow hole in the flashboard is superposed with an inner hole of the valve seat, the valve is fully opened.
Furthermore, a sealing gasket is arranged between the two rear valve seats and the vertical contact surface of the stepped holes of the two opposite valve seats of the valve cavity;
furthermore, sealing gaskets are arranged between the facing surfaces of the front valve seat and the rear valve seat and between the outer diameter of the front valve seat and the inner diameter of the through hole of the guide plate.
Further, the height and width of the guide plate are greater than the length and width of the shutter, respectively.
Furthermore, the valve cover is internally provided with a pressing step, and the guide plate is pressed and fixed by the pressing step surface after the valve cover is connected with the valve body.
The utility model discloses compare with traditional sealed mud gate valve firmly and have following beneficial effect:
a. the through-flow hole on the gate plate is always completely closed by the two guide plates no matter the valve is closed or closed, so that slurry in the fluid passage cannot enter the valve cavity, and the problem of slurry accumulation of the gate valve is thoroughly avoided;
b. the disassembly and assembly can be rapidly completed without any special tool during disassembly and assembly, the manufacture is convenient, and the field maintenance and replacement of the quick-wear parts are simple and convenient.
The utility model provides a long-term hope solve but the difficult problem that does not solve for many years, therefore have novel in design, rational in infrastructure, use cost low, long service life's advantage.
Drawings
FIG. 1 is a schematic structural view of a conventional hard seal slurry gate valve;
fig. 2 is a schematic view of the structure of the present invention.
In fig. 2: 1 is a valve body, 2 and 4 are sealing gaskets, 3 and 3 ' are rear valve seats, 5 and 5 ' are guide plates, 6 are valve covers, 601 is a pressing step, 7 is a valve rod, 8 is a support, 9 and 9 ' are front valve seats, and 10 is a flashboard.
Detailed Description
The invention will be further explained with reference to the following drawings:
as shown in fig. 2, a valve cavity is arranged in the valve body 1, two opposite valve seat step holes are arranged in the valve cavity, and a space for the flashboard 10 to descend is arranged at the lower part of the valve cavity; the valve cover 6 is connected to the upper end of the valve body 1; the bracket 8 is connected to the valve cover 6; the valve rod 7 is screwed in the bracket 8 through threads; the gate plate 10 is connected to the lower end of the valve rod 7, and a through hole is formed in the gate plate 10; the two front valve seats 9 and 9 'and the two rear valve seats 3 and 3' are both in an annular structure; the two rear valve seats 3 and 3' are respectively placed in two opposite valve seat step holes in the valve cavity; the centers of the two guide plates 5 and 5 ' are respectively provided with a through hole, the guide plates 5 and 5 ' are arranged between the two rear valve seats 3 and 3 ' in parallel, and the bottom ends of the guide plates are tightly attached to the bottom of a space for the flashboard 10 to descend at the lower part of the valve cavity; the two front valve seats 9 and 9 'and the two guide plates 5 and 5' are equal in thickness, are respectively placed in through holes arranged in the centers of the guide plates 5 and 5 ', the outer diameters of the two front valve seats and the inner diameters of the through holes form clearance fit, and the inner holes of the two front valve seats are coaxial with the inner holes of the rear valve seats 3 and 3'; the flashboard 10 is arranged between the two guide plates 5 and 5 ', the sealing surfaces at two sides of the flashboard are respectively clung to the sealing end surfaces of the two front valve seats 9 and 9 ', one surface of the two front valve seats 9 and 9 ' is clung to the flashboard 10, the other surface of the two front valve seats is clung to one surface of the two rear valve seats 3 and 3 ', the other surfaces of the two rear valve seats 3 and 3 ' are clung to and clung to the valve body 1, and the valve is fully opened when a through-flow hole on the flashboard 10 is superposed with an inner hole of the valve seat; sealing gaskets 2 are arranged between the facing surfaces of the front valve seats 9 and 9 'and the rear valve seats 3 and 3', and between the outer diameters of the front valve seats 9 and 9 'and the inner diameters of through holes of the guide plates 5 and 5'; a sealing gasket 4 is arranged between the rear valve seats 3 and 3' and the valve seat stepped hole in the valve body 1; the height and width of the guide plates 5 and 5' are greater than the length and width of the shutter 10, respectively; the valve cover 6 is internally provided with a pressing step 601, and the guide plates 5 and 5' are pressed and fixed by the pressing step 601 after the valve cover 6 is connected with the valve body 1.
When the utility model is installed, firstly, the two rear valve seats 3 and 3 'are respectively placed in two opposite valve seat step holes in the valve cavity, and the sealing gasket 4 is placed between the rear valve seats 3 and 3' and the valve seat step holes; then, two front valve seats 9 and 9 'are respectively placed in inner holes of the two guide plates 5 and 5', and a sealing gasket 2 is placed between the front valve seats 9 and 9 'and the guide plates 5 and 5'; then two guide plates 5 and 5 'are inserted between the two rear valve seats 3 and 3' along the upper end of the valve cavity, and the bottom ends of the guide plates are tightly attached to the bottom of the valve cavity; then the upper ends of the two guide plates 5 and 5 'are respectively opened towards the positive direction and the negative direction to form the upper part and the lower part between the two guide plates 5 and 5'; then, when the lower end of the gate plate 10 is inserted into the upper ends of the two guide plates 5 and 5 'from the large lower ends to the small lower ends until the upper ends are blocked, the parallel state of the two guide plates 5 and 5' is restored, so that the gate plate 10 is completely inserted, and a bidirectional sealing state that the sealing gaskets 2 are simultaneously sealed between the front valve seats 9 and 9 'and the rear valve seats 3 and 3' is formed; finally, the lower end of the valve rod 7 is connected with the upper end of the flashboard 10, the valve cover 6 is fastened at the upper end of the valve body 1 through bolts, and meanwhile, the two guide plates 5 and 5' are tightly pressed through the pressing step 601 on the valve cover 6 to be fixed in the valve cavity.
Claims (5)
1. A kind of hard seal mud gate valve preventing siltation and easy to assemble and disassemble, including valve block, valve bonnet, support, valve stem, valve base, flashboard, deflector, there are valve chambers in the said valve block, there are inlet and outlet holes of the fluid at both ends of the valve chamber, and there are two opposite valve base step holes in the valve chamber and the intersection of inlet and outlet holes, and there are spaces for the flashboard to descend in the inferior part of the valve chamber; the valve cover is connected to the upper end of the valve body; the bracket is connected to the valve cover; the valve rod is screwed in the bracket through threads; the flashboard connect the lower extreme at the valve rod, and be equipped with through-flow hole, its characterized in that on the flashboard:
the valve seat consists of two front valve seats and two rear valve seats, and the front valve seats and the rear valve seats are both of annular structures;
the two rear valve seats are respectively placed in two opposite valve seat step holes of the valve cavity;
the two guide plates are arranged in parallel between the two rear valve seats in a mode of being vertical to the axis of the fluid inlet and outlet holes at the two ends of the valve cavity, and the bottom ends of the two guide plates are tightly attached to the bottom of a space for the flashboard to descend at the lower part of the valve cavity;
the two front valve seats and the two guide plates are equal in thickness, are respectively placed in through holes formed in the centers of the two guide plates and are in clearance fit with the through holes;
the flashboard is arranged between the two guide plates, the sealing surfaces on two sides of the flashboard are respectively clung to the sealing end surfaces of the two front valve seats, one surface of each front valve seat is clung to the flashboard, the other surface of each front valve seat is clung to one surface of each rear valve seat, the other surfaces of the two rear valve seats are clung to the valve body and are in a clung state, and when a through flow hole in the flashboard is superposed with an inner hole of the valve seat, the valve is fully opened.
2. The hard sealing mud gate valve of claim 1, characterized in that: and a sealing gasket is arranged between the two rear valve seats and the vertical contact surface of the stepped hole of the two opposite valve seats of the valve cavity.
3. The hard sealing mud gate valve of claim 1, characterized in that: and sealing gaskets are arranged between the veneers of the front valve seat and the rear valve seat and between the outer diameter of the front valve seat and the inner diameter of the through hole of the guide plate.
4. The hard sealing mud gate valve of claim 1, characterized in that: the height and width of the guide plate are respectively greater than the length and width of the gate plate.
5. The hard sealing mud gate valve of claim 1, characterized in that: the valve cover is internally provided with a pressing step, and the guide plate is compressed and fixed by the pressing step surface after the valve cover is connected with the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298731.3U CN210290811U (en) | 2019-08-12 | 2019-08-12 | Prevent hard sealed mud gate valve of long-pending easy dismouting of silt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298731.3U CN210290811U (en) | 2019-08-12 | 2019-08-12 | Prevent hard sealed mud gate valve of long-pending easy dismouting of silt |
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| Publication Number | Publication Date |
|---|---|
| CN210290811U true CN210290811U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921298731.3U Active CN210290811U (en) | 2019-08-12 | 2019-08-12 | Prevent hard sealed mud gate valve of long-pending easy dismouting of silt |
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| CN (1) | CN210290811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410516A (en) * | 2019-08-12 | 2019-11-05 | 江苏华展石油机械有限公司 | A kind of anti-easy-to-dismount hard sealing slurry gate valve of siltation |
-
2019
- 2019-08-12 CN CN201921298731.3U patent/CN210290811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410516A (en) * | 2019-08-12 | 2019-11-05 | 江苏华展石油机械有限公司 | A kind of anti-easy-to-dismount hard sealing slurry gate valve of siltation |
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