CN112879579B

CN112879579B - Sand-proof anti-pollution flat valve

Info

Publication number: CN112879579B
Application number: CN202110137986.7A
Authority: CN
Inventors: 李海庆; 薛庆华; 侯祖刚; 程贵华; 于广海
Original assignee: Dezhou United Petroleum Technology Corp
Current assignee: Dezhou United Petroleum Technology Corp
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2022-06-07
Anticipated expiration: 2041-02-01
Also published as: CN112879579A

Abstract

The invention relates to a sand-proof anti-pollution flat valve, which relates to the technical field of valves and comprises a valve body, wherein a hand wheel is rotatably arranged at the top of the valve body, a valve rod is arranged in the valve body, the top of the valve rod is connected with the hand wheel, the hand wheel is rotated to drive the valve rod to move up and down in the valve body, a valve plate whole is fixedly arranged at the bottom of the valve rod, a valve plate through hole is integrally formed in the valve plate, a lower valve plate is arranged at the bottom of the valve plate through hole, a sand discharge channel is arranged in the lower valve plate and used for conveying sand, an elastic element is used for propping against the valve seat to be in tight contact with the valve plate whole, a sealing element is fixedly arranged in the sand control valve pressure channel, a second sand-proof valve cavity is reserved between the valve body and the lower valve plate, a sand-ejecting assembly is fixedly arranged in the second sand-proof valve cavity and used for ejecting sand and ejecting sand from the sand discharge channel.

Description

Sand-proof anti-pollution flat valve

Technical Field

The invention relates to the technical field of sand-proof anti-pollution flat valves, in particular to a sand-proof anti-pollution flat valve.

Background

A flat gate valve is a sliding valve whose closing member is a parallel gate plate. The closing member can be a single gate or a double gate with a spreader mechanism in between. The pressing force of the gate plate to the valve seat is controlled by the medium pressure acting on the floating gate plate or the floating valve seat. In the case of a double-gate plate gate valve, the pressing force can be supplemented by a spreading mechanism between the two gate plates. The plate gate valve may be classified into a manual plate gate valve, a pneumatic plate gate valve, and an electric plate gate valve according to a driving manner. The gate valve can be divided into a plate gate valve with a diversion hole, a plate gate valve without a diversion hole, an oil field plate gate valve, a pipeline plate gate valve, a gas plate gate valve and the like according to the application and the use occasion.

The biggest difficult problems in the domestic and foreign valve industries are as follows: the pressure control channel is communicated with the valve cavity in a half-open state, and silt in the pressure control channel is filled in the valve cavity. The sewage and oil stain enter a sealing grease environment of a valve cavity to pollute the valve cavity to cause valve sealing failure, and at present, two solutions are probably adopted, wherein the first solution is to use a sand baffle plate or a sand baffle ring to partially block silt, and the second solution is to open a sand washing channel to wash sand regularly. However, the two schemes can not thoroughly solve the problem, and the sand baffle can not block fine sand and can not block pollutants such as oil stains and the like. The sand washing is post-treatment, which not only has the fatal defects of incomplete sand washing, water pollution on sealing grease sealing surfaces and the like, but also has the defects of greatly increased workload, pressure relief in the working process and the like.

Therefore, there is a need to provide a sand and pollution prevention flat valve to solve the above problems in the background art.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, adapt to the practical requirements and provide a sand-prevention and pollution-prevention flat valve so as to solve the technical problems.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

the anti-pollution flat valve of sand control comprises a valve body, wherein a hand wheel is arranged at the top of the valve body in a rotating mode, a valve rod is arranged inside the valve body, the top of the valve rod is connected with the hand wheel, the hand wheel is rotated to drive the valve rod to move up and down in the valve body, a whole valve plate is fixedly arranged at the bottom of the valve rod, a valve plate through hole is integrally formed in the valve plate, a lower valve plate is arranged at the bottom of the valve plate through hole, a sand discharge channel is arranged inside the lower valve plate and used for conveying sand, a sand control valve pressure channel is fixedly arranged inside the valve body, a first sand control valve cavity is fixedly arranged above the sand control valve pressure channel and close to one side of the valve rod, one side of the valve rod is positioned at the bottom of the sand control valve pressure channel and provided with a valve seat, an elastic element is arranged at one side of the valve seat and connected with the valve body, the elastic element is used for propping the valve seat and integrally and tightly contacting the valve plate, the sealing element is fixedly arranged inside the sand control valve control pressure channel, a second sand control valve cavity is reserved between the valve body and the lower valve plate, and a sand ejection assembly is fixedly arranged inside the second sand control valve cavity and used for ejecting sand and stones and ejecting the sand and stones from the sand discharge channel.

Further, as preferred, the bullet sand subassembly includes bullet sand board, launches the member, drum and organism, the inside fixed first spout of having seted up of organism, the drum slides and sets up inside the first spout, the top fixedly connected with of drum blocks the piece, it is provided with first spring to block between piece and the organism, first spring suit is in the outer end of drum, the inside through-hole that leaves of drum, it passes to launch the member the inside through-hole of drum, the top fixedly connected with bullet sand board that launches the member, bullet sand board is used for receiving and launches the grit of the inside of second sand control valve pocket, one side fixedly connected with connecting plate that blocks, the top fixedly connected with press switch of connecting plate, press switch is located one side of bullet sand board.

Further, as preferred, inside second spout and the third spout of leaving of organism, the inside slip of second spout is provided with the push rod, the one end of push rod with the bottom fixed connection of connecting plate, the bottom of push rod is the inclined plane setting, the fixed dead lever that is provided with in one side of third spout, the one end slip cover of dead lever has the sleeve, dead lever surface cover is equipped with the third spring, the one end of third spring with sleeve fixed connection, the other end of third spring with the terminal fixed connection of third spout, the fixed chute that is provided with on the sleeve, the inclined plane of push rod with the chute contact, the fixed dop that is provided with of telescopic one end.

Preferably, the ejection rod piece is fixedly provided with a clamping piece which is a round surface with a large middle cross section and small two ends, a second spring is fixedly arranged between the cylinder and the clamping piece, and the ejection rod piece penetrates through the second spring.

Further, preferably, the bottom of the lower valve plate is located above the push switch, the lower valve plate can press the push switch to press down when pressed down, and the sand ejecting plate is not in contact with the lower valve plate.

Further, as preferred, first spout and second spout are vertical notch and parallel arrangement, the third spout is horizontal notch, the third spout with first spout and second spout are perpendicular, and first spout, second spout and third spout communicate with each other.

Further, as preferred, the sand discharge channel is a trumpet-shaped through hole with a large bottom gap and a small upper gap.

Further, preferably, when a push switch in the sand ejecting assembly is not pushed down, the first spring is in an open state, the second spring is in a compressed state, the third spring is in an open state, and the clamping piece is located above the clamping head.

Has the advantages that:

A. the sand discharging channel is reserved in the lower valve plate of the device, wherein the sand discharging channel is a horn-shaped through hole with a large bottom gap and a small upper gap, namely, liquid can fill the sand discharging channel and the second sand prevention valve cavity, sand falls into the second sand prevention valve cavity and can be received by a sand bouncing plate in the sand bouncing assembly, sand on the sand bouncing plate is bounced by the sand bouncing plate to be mixed with the liquid and is discharged from the sand discharging channel, because the upper discharge port of the sand discharging channel is small, most of sand can fall into two sides above the lower valve plate, and when the whole valve plate is opened next time, the liquid brings the sand on the two sides above the lower valve plate into the sand prevention valve control pressure channel to achieve the purpose of sand discharging; under considering extreme environment, if the grit on the bullet sand board is too much, can open and close many times and start the grit on the bullet sand board and pop out the dilution many times with the grit of bullet sand board through opening many times.

B. When a press switch in the sand ejecting assembly is not pressed down (namely the lower valve plate does not press the press switch), the first spring is in an open state, the second spring is in a compressed state, the third spring is in an open state, and the clamping piece is positioned above the clamping head; when the valve body is closed (the lower valve plate descends and extrudes the push switch to descend), the push switch descends to further push the push rod to press downwards, the push rod presses downwards, the inclined end of the push rod extrudes the inclined groove in the sleeve, and the sleeve is further pushed to slide towards the third spring end; the push switch descends to further push the blocking piece to press downwards, so that the first spring is in a compressed state, the cylinder pushes the second spring to further push the clamping piece to move downwards until the clamping state between the clamping piece and the clamping head is released, the first spring and the second spring are elastically pulled down at the moment, the first spring is compressed to the lowest position and has a tendency of driving the blocking piece to move upwards, the second spring is lengthened to the longest position, the second spring has a contraction tendency and also has a tendency of driving the ejection rod piece to move upwards, at the moment, not only does the second spring have a tendency of driving the ejection rod piece to move upwards, but also the cylinder has an upward tendency to further pull the second spring to further drive the ejection rod piece to move upwards to eject the ejection rod, so that the ejection sand plate is driven to move upwards to play a role of ejecting sand, and the sealing performance of the valve body is prevented from being blocked by sand; when the lower valve plate was upwards, that is to say when the power to push down switch disappears, the first spring of compressed can resume the extension, and the second spring that further drives to be elongated also can reset and produce the pulling force, resumes to the initial state up to first spring, and the second spring will further drive the fastener upwards simultaneously, makes ejection member resume the initial state, realizes reseing.

Drawings

FIG. 1 is a schematic half-sectional view of a sand-proof and anti-pollution flat valve according to the present invention;

FIG. 2 is a full sectional view of a sand-proof and anti-pollution flat valve according to the present invention;

FIG. 3 is an enlarged view of a lower valve plate and a sand ejection assembly in the sand-prevention and anti-pollution flat valve of the invention;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 4;

in the figure: 1. a valve body; 2. a hand wheel; 3. a valve stem; 4. the valve plate is integral; 401. a valve plate through hole; 402. a lower valve plate; 403. a sand discharge channel; 5. a first sand control valve cavity; 6. the sand control valve controls the pressure channel; 7. a sealing element; 8. a valve seat; 9. an elastic element; 10. a sand ejection assembly; 11. a second sand control valve cavity; 12. sand ejecting plates; 13. ejecting the rod piece; 14. a blocking member; 15. a first spring; 16. a cylinder; 17. a second spring; 18. a first chute; 20. a body; 21. a push switch; 22. a connecting plate; 23. a push rod; 24. a second chute; 25. a fastener; 26. a sleeve; 27. a chute; 28. clamping a head; 29. a third spring; 30. fixing the rod; 31. and a third chute.

Detailed Description

The invention will be further illustrated with reference to the following figures 1 to 5 and examples:

a sand control anti-pollution flat valve is provided with a valve rod 3, the top of the valve rod 3 is connected with a hand wheel 2, the hand wheel 2 is rotated to drive the valve rod 3 to move up and down in a valve body 1, the bottom of the valve rod 3 is fixedly provided with a valve plate whole 4, the valve plate whole 4 is provided with a valve plate through hole 401, the bottom of the valve plate through hole 401 is provided with a lower valve plate 402, a sand discharge channel 403 is arranged in the lower valve plate 402 for conveying sand, a sand control valve pressure channel 6 is fixedly arranged in the valve body 1, a first sand control valve cavity 5 is fixedly arranged on one side, close to the valve rod 3, above the sand control valve pressure channel 6, one side of the valve rod 3 is positioned at the bottom of the sand control valve pressure channel 6 and is provided with a valve seat 8, one side of the valve seat 8 is provided with an elastic element 9, and the elastic element 9 is connected with the valve body 1, the elastic element 9 is used for propping against the valve seat 8 to be in close contact with the valve plate whole body 4, the sealing element 7 is fixedly arranged inside the sand control valve pressure control channel 6, a second sand control valve cavity 11 is reserved between the valve body 1 and the lower valve plate 402, a sand ejection assembly 10 is fixedly arranged inside the second sand control valve cavity 11, and the sand ejection assembly 10 is used for ejecting sand and stones and ejecting the sand and stones from the sand discharge channel 403.

In this embodiment, the sand ejecting assembly 10 includes a sand ejecting plate 12, an ejecting rod 13, a cylinder 16 and a machine body 20, a first sliding slot 18 is fixedly arranged inside the machine body 20, the cylinder 16 is slidably arranged inside the first sliding slot 18, a blocking member 14 is fixedly connected to the top of the cylinder 16, a first spring 15 is arranged between the blocking member 14 and the machine body 20, the first spring 15 is sleeved at the outer end of the cylinder 16, a through hole is reserved inside the cylinder 16, the ejection rod 13 penetrates through a through hole in the cylinder 16, the top of the ejection rod 13 is fixedly connected with a sand ejection plate 12, the sand ejecting plate 12 is used for receiving and ejecting sand inside the second sand control valve cavity 11, one side of the blocking piece 14 is fixedly connected with a connecting plate 22, the top of the connecting plate 22 is fixedly connected with a press switch 21, and the press switch 21 is located on one side of the sand ejecting plate 12.

In this embodiment, a second sliding groove 24 and a third sliding groove 31 are reserved inside the machine body 20, a push rod 23 is slidably disposed inside the second sliding groove 24, one end of the push rod 23 is fixedly connected with the bottom of the connecting plate 22, the bottom of the push rod 23 is an inclined plane, a fixing rod 30 is fixedly disposed on one side of the third sliding groove 31, a sleeve 26 is slidably sleeved at one end of the fixing rod 30, a third spring 29 is sleeved on the surface of the fixing rod 30, one end of the third spring 29 is fixedly connected with the sleeve 26, the other end of the third spring 29 is fixedly connected with the tail end of the third sliding groove 31, a chute 27 is fixedly disposed on the sleeve 26, the inclined plane of the push rod 23 contacts with the chute 27, and a chuck 28 is fixedly disposed at one end of the sleeve 26.

In this embodiment, the ejection rod 13 is fixedly provided with a clamping piece 25, the clamping piece 25 is a circular surface with a large middle cross section and small two ends, a second spring 17 is fixedly arranged between the cylinder 16 and the clamping piece 25, and the ejection rod 13 passes through the second spring 17.

In this embodiment, the bottom of lower valve plate 402 is located above push switch 21, and when lower valve plate 402 is pushed down, push switch 21 can be pressed down, and sand ejecting plate 12 and lower valve plate 402 do not contact.

In this embodiment, the first sliding groove 18 and the second sliding groove 24 are vertical notches and are arranged in parallel, the third sliding groove 31 is a horizontal notch, the third sliding groove 31 is perpendicular to the first sliding groove 18 and the second sliding groove 24, and the first sliding groove 18, the second sliding groove 24 and the third sliding groove 31 are communicated.

In this embodiment, the sand discharge passage 403 is a trumpet-shaped through hole with a large bottom gap and a small top gap.

In this embodiment, when the push switch 21 in the sand ejecting assembly 10 is not pushed down, the first spring 15 is in an expanded state, the second spring 17 is in a compressed state, the third spring 29 is in an expanded state, and the clip 25 is located above the chuck 28.

The invention has the beneficial effects that:

a sand discharge channel 403 is reserved in a lower valve plate 402 of the device, wherein the sand discharge channel 403 is a horn-shaped through hole with a large bottom gap and a small upper gap, namely, liquid can fill the sand discharge channel 403 and a second sand control valve cavity 11, sand falls into the second sand control valve cavity 11 and can be received by a sand springing plate 12 in a sand springing assembly 10, sand on the sand springing plate 12 is bounced by the sand springing plate 12 and mixed liquid is discharged from the sand discharge channel 403, because the upper discharge port of the sand discharge channel 403 is small, most of sand falls into two sides above the lower valve plate 402, and when a valve plate whole 4 is opened next time, the liquid brings the sand on the two sides above the lower valve plate 402 into a sand control valve pressing channel 6 to achieve the purpose of sand discharge; in consideration of extreme environment, if the sand on the sand ejecting plate 12 is too much, the sand ejecting assembly 10 can be started to eject and dilute the sand on the sand ejecting plate 12 for multiple times through multiple opening and closing.

When the push switch 21 in the sand ejecting assembly 10 is not pressed down (i.e. the lower valve plate 402 does not push the push switch 21), the first spring 15 is in an open state, the second spring 17 is in a compressed state, the third spring 29 is in an open state, and the clamping piece 25 is positioned above the clamping head 28; when the valve body 1 is closed (the lower valve plate 402 descends and presses the push switch 21 to descend), the push switch 21 descends to further push the push rod 23 to press downwards, the push rod 23 presses downwards, the inclined end of the push rod 23 presses the inclined groove 27 in the sleeve 26, and the sleeve 26 is further pushed to slide towards the end of the third spring 29; the push switch 21 descends to further push the blocking piece 14 to press downwards, so that the first spring 15 is in a compressed state, the cylinder 16 pushes the second spring 17 to further push the clamping piece 25 to move downwards until the clamping piece 25 and the clamping head 28 are released from a clamping state, at this time, the first spring 15 and the second spring 17 are elastically pulled downwards, the first spring 15 is compressed to the lowest position, the blocking piece 14 is driven to move upwards, the second spring 17 is elongated to the longest length, the second spring 17 has a contraction trend, namely a trend of driving the ejection rod piece 13 to move upwards, at this time, not only the second spring 17 has a trend of driving the ejection rod piece 13 to move upwards, but also the cylinder 16 has a trend of further pulling the second spring 17 to further drive the ejection rod piece 13 to move upwards, and the ejection rod piece 13 drives the sand ejection plate 12 to move upwards to play a sand ejection role, so that sand is prevented from blocking the sealing performance of the valve body 1; when the lower valve plate 402 is upward, that is, the force for pressing the switch 21 is eliminated, the compressed first spring 15 will recover to extend, and further drive the extended second spring 17 to recover to generate a pulling force until the first spring 15 recovers to the initial state, and simultaneously the second spring 17 will further drive the clamping piece 25 to upward, so that the ejection rod piece 13 recovers to the initial state, and the recovery is realized.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.

Claims

1. The utility model provides a sand control anti-pollution wafer valve which characterized in that: the sand control valve comprises a valve body (1), a hand wheel (2) is arranged at the top of the valve body (1) in a rotating mode, a valve rod (3) is arranged inside the valve body (1), the top of the valve rod (3) is connected with the hand wheel (2), the hand wheel (2) is rotated to drive the valve rod (3) to move up and down in the valve body (1), a valve plate whole body (4) is fixedly arranged at the bottom of the valve rod (3), a valve plate through hole (401) is formed in the valve plate whole body (4), a lower valve plate (402) is arranged at the bottom of the valve plate through hole (401), a sand discharge channel (403) is arranged inside the lower valve plate (402) and used for conveying sand, a sand control valve pressing channel (6) is fixedly arranged inside the valve body (1), a first sand control valve cavity (5) is fixedly arranged on one side of the valve rod (3) and above the sand control pressing channel (6), a valve seat (8) is arranged on one side of the valve rod (3) and positioned at the bottom of the sand control valve pressure control channel (6), an elastic element (9) is arranged on one side of the valve seat (8), the elastic element (9) is connected with the valve body (1), the elastic element (9) is used for propping against the valve seat (8) to be in tight contact with the valve plate whole body (4), a sealing element (7) is fixedly arranged inside the sand control valve pressure control channel (6), a second sand control valve cavity (11) is reserved between the valve body (1) and the lower valve plate (402), a sand ejection assembly (10) is fixedly arranged inside the second sand control valve cavity (11), and the sand ejection assembly (10) is used for ejecting sand and ejecting sand to eject sand from the sand discharge channel (403); the sand ejection assembly (10) comprises a sand ejection plate (12), an ejection rod piece (13), a cylinder (16) and a machine body (20), a first sliding groove (18) is fixedly formed in the machine body (20), the cylinder (16) is arranged in the first sliding groove (18) in a sliding mode, a blocking piece (14) is fixedly connected to the top of the cylinder (16), a first spring (15) is arranged between the blocking piece (14) and the machine body (20), the first spring (15) is sleeved at the outer end of the cylinder (16), a through hole is reserved in the cylinder (16), the ejection rod piece (13) penetrates through the through hole in the cylinder (16), the sand ejection plate (12) is fixedly connected to the top of the ejection rod piece (13), the sand ejection plate (12) is used for receiving sand inside the second sand prevention piece (11), and a valve cavity (22) is fixedly connected to one side of the blocking piece (14), the top of the connecting plate (22) is fixedly connected with a press switch (21), and the press switch (21) is positioned on one side of the sand ejecting plate (12); a second sliding chute (24) and a third sliding chute (31) are reserved in the machine body (20), a push rod (23) is arranged in the second sliding groove (24) in a sliding manner, one end of the push rod (23) is fixedly connected with the bottom of the connecting plate (22), the bottom of the push rod (23) is arranged as an inclined plane, one side of the third chute (31) is fixedly provided with a fixed rod (30), one end of the fixed rod (30) is slidably sleeved with a sleeve (26), a third spring (29) is sleeved on the surface of the fixed rod (30), one end of the third spring (29) is fixedly connected with the sleeve (26), the other end of the third spring (29) is fixedly connected with the tail end of the third sliding chute (31), an inclined groove (27) is fixedly arranged on the sleeve (26), an inclined surface of the push rod (23) is in contact with the inclined groove (27), and a clamping head (28) is fixedly arranged at one end of the sleeve (26); a clamping piece (25) is fixedly arranged on the ejection rod piece (13), the clamping piece (25) is a round surface with a large middle cross section and a small cross section at two ends, a second spring (17) is fixedly arranged between the cylinder (16) and the clamping piece (25), and the ejection rod piece (13) penetrates through the second spring (17); when a press switch (21) in the sand ejecting assembly (10) is not pressed down, the first spring (15) is in an open state, the second spring (17) is in a compressed state, the third spring (29) is in an open state, and the clamping piece (25) is positioned above the clamping head (28).

2. The sand-control anti-pollution flat valve according to claim 1, which is characterized in that: the bottom of the lower valve plate (402) is positioned above the push switch (21), the lower valve plate (402) can press the push switch (21) to press downwards, and the sand ejecting plate (12) is not in contact with the lower valve plate (402).

3. The sand-control anti-pollution flat valve according to claim 2, characterized in that: the first sliding groove (18) and the second sliding groove (24) are vertical notches and are arranged in parallel, the third sliding groove (31) is a transverse notch, the third sliding groove (31) is perpendicular to the first sliding groove (18) and the second sliding groove (24), and the first sliding groove (18), the second sliding groove (24) and the third sliding groove (31) are communicated.

4. The sand-control anti-pollution flat valve according to claim 1, which is characterized in that: the sand discharge channel (403) is a horn-shaped through hole with a large bottom gap and a small upper gap.