CN212297773U

CN212297773U - Dead check valve of anti-sticking for petroleum pipeline connection

Info

Publication number: CN212297773U
Application number: CN202020500315.3U
Authority: CN
Inventors: 秦胜风; 袁庆宝; 谭怡君
Original assignee: Dongying Tieren Petroleum Machinery Tools Co ltd
Current assignee: Dongying Tieren Petroleum Machinery Tools Co ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-01-05
Anticipated expiration: 2030-04-08

Abstract

The utility model discloses an anti-seize check valve for petroleum pipeline connection, the top of the middle part of the check valve body is connected with an upper cover, the middle part of the top of the upper cover is provided with a groove, the inside of the groove is embedded with an oil plug, the bottom of the groove is provided with an oil filling hole, the middle part of the bottom of the upper cover is fixedly connected with a fixed block, the middle part of the fixed block is provided with a through hole, the inside of the through hole is embedded with a guide rod, the side surface of the guide rod is symmetrically provided with a slide block, the middle part of the fixed block is positioned at the two sides of the through hole and symmetrically provided with a slide groove, the structure of the check valve is scientific and reasonable, the check valve is safe and convenient to use, the position of the guide rod can not be deviated when the guide rod slides in the through hole by the matching of, and then provide lubricated effect to the guide bar, avoid the dead normal use that influences the device of guide bar card.

Description

Dead check valve of anti-sticking for petroleum pipeline connection

Technical Field

The utility model relates to a pipeline valve technical field specifically is a based on dead check valve of petroleum pipeline connection with anti-sticking.

Background

The check valve is a valve whose opening and closing piece is a circular valve flap and acts by self weight and medium pressure to block the medium from flowing backwards, belonging to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve, the valve flap movement mode is divided into lifting type and swing type, the check valve is used for only allowing the medium to flow towards one direction and preventing the medium from flowing towards the opposite direction, usually the valve is automatically operated, the valve flap is opened under the action of fluid pressure flowing towards one direction, when the fluid flows towards the opposite direction, the valve flap is combined by the fluid pressure and the self weight of the valve flap to act on the valve seat, thereby cutting off the flow;

the inside valve clack of present check valve blocks easily for the inside space that appears of check valve leads to the petroleum pipeline phenomenon of backward flow to appear, so the utility model provides a based on dead check valve of petroleum pipeline connection with anti-sticking satisfies people's demand.

SUMMERY OF THE UTILITY MODEL

The utility model provides a because dead check valve of anti-sticking is used in petroleum pipeline connection can effectively solve the easy card that proposes in the above-mentioned background art and die for the inside space that appears of check valve leads to the problem that the backward flow phenomenon appears in the petroleum pipeline.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-blocking check valve for petroleum pipeline connection comprises a check valve body, wherein an inlet flange is fixedly connected to one end of the middle part of the check valve body, an outlet flange is fixedly connected to one end of the middle part of the check valve body, which is far away from the inlet flange, an upper cover is connected to the top end of the middle part of the check valve body, fixing bolts are equidistantly installed at the top end of the upper cover, a groove is formed in the middle of the top end of the upper cover, an oil plug is embedded and installed in the groove, an oil filling hole is formed in the bottom end of the groove, a fixing block is fixedly connected to the middle of the bottom end of the upper cover, a through hole is formed in the middle of the fixing block, a guide rod is embedded and installed in the through hole, sliding blocks are symmetrically installed on;

the bottom fixed connection of guide bar has the valve clack, valve clack bottom fixed mounting has the closing plate, the inner wall at check valve body middle part is close to the first supporting seat of the one end fixedly connected with of import flange, the inside at check valve body middle part is close to the one end fixedly connected with second supporting seat of export flange, the rubber pad is all installed at the top of first supporting seat and second supporting seat.

Preferably, the oil filling hole and the through hole are communicated with each other, the sliding block is embedded into the sliding groove, and the guide rod and the fixed block are in fit sliding connection through the sliding block and the sliding groove.

Preferably, the sealing plate, the first supporting seat, the second supporting seat and the rubber pad are annular, the bottom end of the valve clack is attached to the top end of the rubber pad, and the bottom end of the sealing plate is attached to the first supporting seat and the second supporting seat.

Preferably, first supporting seat and second supporting seat closely laminate with the inner wall of check valve body, the top of first supporting seat and second supporting seat is located same horizontal plane, the adjacent one end of first supporting seat and second supporting seat is laminated mutually.

Preferably, the seal groove has all been seted up to the one end of keeping away from the check valve body in the middle part of import flange and outlet flange, the inside embedding of seal groove has sealed the pad.

Preferably, the seal groove is annular, the sealed material of filling up is that hardness is 60 sealed soft silica gel, the one end of sealed pad extends to the outside of seal groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. be provided with recess, oil plug, oil filler point, guide bar, through-hole, valve clack, slider and spout, use through the cooperation of slider and spout, guarantee that the guide bar position can not take place the skew when the through-hole is inside to slide, avoid the guide bar crooked to lead to the whole device card to die, use through the cooperation of recess and oil filler point, can be to the inside injection lubricating oil of through-hole and spout, and then provide the lubrication action to the guide bar, avoid the guide bar card to die the normal use that influences the device.

2. Be provided with valve clack, closing plate, first supporting seat, second supporting seat and rubber pad, use through the cooperation of first supporting seat and second supporting seat, played limiting displacement to the valve clack, avoid the valve clack to continue to march downwards and lead to the phenomenon that the pipeline backward flow appears, use through the cooperation of closing plate and rubber pad simultaneously, improved the leakproofness between valve clack and first supporting seat and the second supporting seat.

3. Be provided with seal groove and sealed the pad, use through the cooperation of seal groove and sealed pad for the junction of pipeline and device keeps sealed, avoids having water to ooze the normal use that influences the device, has improved the life of device.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the installation structure of the guide bar of the present invention;

FIG. 3 is a schematic view of the installation structure of the valve flap of the present invention;

fig. 4 is a schematic structural diagram of the region a in fig. 3 according to the present invention.

Reference numbers in the figures: 1. a check valve body; 2. an inlet flange; 3. an outlet flange; 4. an upper cover; 5. a groove; 6. an oil plug; 7. an oil filler hole; 8. a fixed block; 9. a through hole; 10. a guide bar; 11. a slider; 12. a chute; 13. a valve flap; 14. a sealing plate; 15. a first support base; 16. a second support seat; 17. a rubber pad; 18. fixing the bolt; 19. a sealing groove; 20. and a gasket.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in figures 1-4, the utility model provides a technical scheme, an anti-seize check valve for petroleum pipeline connection comprises a check valve body 1, an inlet flange 2 is fixedly connected with one end of the middle part of the check valve body 1, an outlet flange 3 is fixedly connected with one end of the middle part of the check valve body 1 far away from the inlet flange 2, an upper cover 4 is connected with the top end of the middle part of the check valve body 1, fixing bolts 18 are equidistantly installed on the top end of the upper cover 4, a groove 5 is opened on the middle part of the top end of the upper cover 4, an oil plug 6 is embedded and installed in the groove 5, an oil injection hole 7 is opened at the bottom end of the groove 5, a fixed block 8 is fixedly connected with the middle part of the bottom end of the upper cover 4, a through hole 9 is opened on the middle part of the fixed block 8, a guide rod 10 is embedded and installed in the through hole 9, the oil filling hole 7 and the through hole 9 are communicated with each other, lubricating oil can be injected into the through hole 9 by utilizing the groove 5 and the oil filling hole 7, so that a lubricating effect is provided for the guide rod 10 and the sliding block 11, the time for maintaining equipment is shortened, the sliding block 11 is embedded into the sliding groove 12, and the guide rod 10 and the fixed block 8 are in fit sliding connection through the sliding block 11 and the sliding groove 12, so that the position of the guide rod 10 cannot be deviated when the guide rod slides in the through hole 9, and the device cannot be blocked in the use process;

the bottom fixedly connected with valve clack 13 of guide bar 10, valve clack 13 bottom fixed mounting has closing plate 14, the inner wall at middle part of check valve body 1 is close to the first supporting seat 15 of one end fixedly connected with of import flange 2, the inside at middle part of check valve body 1 is close to the one end fixedly connected with second supporting seat 16 of export flange 3, first supporting seat 15 and second supporting seat 16 closely laminate with the inner wall of check valve body 1, the top of first supporting seat 15 and second supporting seat 16 is located same horizontal plane, the adjacent one end of first supporting seat 15 and second supporting seat 16 laminates mutually, make first supporting seat 15, can keep sealed between second supporting seat 16 and the valve clack 13, avoid having liquid to take place the backward flow phenomenon inside check valve body 1, rubber pads 17 are all installed at the top of first supporting seat 15 and second supporting seat 16, closing plate 14, first supporting seat 15, the first supporting seat 15, The shapes of the second supporting seat 16 and the rubber pad 17 are both annular, the bottom end of the valve clack 13 is attached to the top end of the rubber pad 17, and the bottom end of the sealing plate 14 is attached to the first supporting seat 15 and the second supporting seat 16;

seal groove 19 has all been seted up to the one end of keeping away from check valve body 1 in the middle part of inlet flange 2 and outlet flange 3, and the inside embedding of seal groove 19 is installed sealed pad 20, and seal groove 19 is the annular, and sealed pad 20 material is the sealed soft silica gel that hardness is 60, and the one end of sealed pad 20 extends to the outside of seal groove 19, can extrude sealed pad 20 during pipe connection for the junction of pipeline and device keeps sealed, avoids having water to ooze the normal use that influences the device.

The utility model discloses a theory of operation and use flow: in the process of using the check valve for preventing the petroleum pipeline from being stuck for connection, firstly, the device is connected on the petroleum pipeline, the inlet flange 2 is connected with the oil inlet pipe, the outlet flange 3 is connected with the oil outlet pipe, the oil inlet pipe and the oil outlet pipe extrude the sealing gasket 20 inwards in the connection process, the sealing groove 19 and the sealing gasket 20 ensure that the connection part between the oil inlet pipe and the device and the connection part between the oil outlet pipe and the device are kept sealed, no petroleum seeps out, and the petroleum enters the inner part of the check valve body 1 from the inlet flange 2;

when the oil in the check valve body 1 reaches a certain amount, certain pressure is generated on the valve clack 13, the valve clack 13 is pushed upwards, the guide rod 10 moves upwards in the through hole 9, the sliding block 11 slides in the sliding groove 12, the position of the guide rod 10 cannot be changed in the moving process, the guide rod 10 cannot be inclined and clamped, meanwhile, the valve clack 13 is not attached to the first supporting seat 15 and the second supporting seat 16, the oil flows to the outlet flange 3 from a gap between the valve clack 13 and the first supporting seat 15 and between the guide rod 10 and the second supporting seat 16 and is discharged through the outlet flange 3, if the oil enters the check valve body 1 from the outlet flange 3, the oil downwards extrudes the valve clack 13, and the sealing plate 14 and the rubber pad 17 keep the sealing between the valve clack 13 and the first supporting seat 15 and between the valve clack 13 and the second supporting seat 16;

if the device needs to be lubricated, the oil plug 6 is taken down firstly, lubricating oil is guided into the groove 5, the lubricating oil flows into the through hole 9 and the sliding groove 12 through the oil injection hole 7, a lubricating effect is provided for the guide rod 10 and the sliding block 11, and after a certain amount of lubricating oil is injected, the oil plug 6 is embedded into the groove 5 again.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a dead check valve of anti-sticking for connecting based on petroleum pipeline, includes check valve body (1), its characterized in that: the one end fixedly connected with import flange (2) at check valve body (1) middle part, the one end fixedly connected with export flange (3) of import flange (2) is kept away from at check valve body (1) middle part, the top at check valve body (1) middle part is connected with upper cover (4), fixing bolt (18) are installed to the top equidistance of upper cover (4), the middle part on upper cover (4) top is seted up recess (5), oil plug (6) are installed in the inside embedding of recess (5), oil filler point (7) have been seted up to the bottom of recess (5), the middle part fixedly connected with fixed block (8) of upper cover (4) bottom, through-hole (9) have been seted up at the middle part of fixed block (8), guide bar (10) are installed in the inside embedding of through-hole (9), slider (11) are installed to the side symmetry of guide bar (10), the middle part of the fixed block (8) is symmetrically provided with sliding chutes (12) at the positions of two sides of the through hole (9);

the bottom fixed connection of guide bar (10) has valve clack (13), valve clack (13) bottom fixed mounting has closing plate (14), the inner wall at check valve body (1) middle part is close to the first supporting seat of one end fixedly connected with (15) of import flange (2), the inside at check valve body (1) middle part is close to the one end fixedly connected with second supporting seat (16) of export flange (3), rubber pad (17) are all installed at the top of first supporting seat (15) and second supporting seat (16).

2. The check valve of claim 1, wherein the check valve is configured to prevent the petroleum pipeline from being stuck: the oil filler point (7) and the through hole (9) are communicated with each other, the sliding block (11) is embedded in the sliding groove (12), and the guide rod (10) and the fixed block (8) are in fit sliding connection through the sliding block (11) and the sliding groove (12).

3. The check valve of claim 1, wherein the check valve is configured to prevent the petroleum pipeline from being stuck: the sealing plate (14), the first supporting seat (15), the second supporting seat (16) and the rubber pad (17) are annular in shape, the bottom end of the valve clack (13) is attached to the top end of the rubber pad (17), and the bottom end of the sealing plate (14) is attached to the first supporting seat (15) and the second supporting seat (16).

4. The check valve of claim 1, wherein the check valve is configured to prevent the petroleum pipeline from being stuck: first supporting seat (15) and second supporting seat (16) closely laminate with the inner wall of check valve body (1), the top of first supporting seat (15) and second supporting seat (16) is located same horizontal plane, the one end that first supporting seat (15) and second supporting seat (16) are adjacent laminates mutually.

5. The check valve of claim 1, wherein the check valve is configured to prevent the petroleum pipeline from being stuck: seal groove (19) have all been seted up to the one end of keeping away from check valve body (1) in import flange (2) and outlet flange (3) middle part, sealed pad (20) are installed in the inside embedding of seal groove (19).

6. The check valve of claim 5, wherein the check valve is configured to prevent the valve from being stuck when connected to a petroleum pipeline: the seal groove (19) is annular, the material of the sealing gasket (20) is soft sealing silica gel with the hardness of 60, and one end of the sealing gasket (20) extends to the outer side of the seal groove (19).