CN114718506A - Arrow-shaped check valve with seal mounting structure - Google Patents
Arrow-shaped check valve with seal mounting structure Download PDFInfo
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- CN114718506A CN114718506A CN202210408984.1A CN202210408984A CN114718506A CN 114718506 A CN114718506 A CN 114718506A CN 202210408984 A CN202210408984 A CN 202210408984A CN 114718506 A CN114718506 A CN 114718506A
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- disc body
- connecting disc
- shell
- casing
- arrow
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- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 12
- 239000012530 fluid Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses an arrow-shaped check valve with a sealing installation structure, which comprises a first shell, a first connecting disc body, a first sealing ring and a filter screen frame, wherein a first spring is arranged in the first shell, one end of the first spring is connected with a valve core, the upper end of the valve core penetrates through a limiting guide frame, the limiting guide frame is arranged in the first shell, the first connecting disc body is arranged at the lower end of the first shell, the lower end of the first connecting disc body is in contact with a second connecting disc body, the second connecting disc body is arranged at the upper end of the second shell, and righting devices are arranged on the outer sides of the second shell and the first shell. This arrow type check valve with seal installation structure connects fixedly through stud and first nut between first casing and the second casing, dismantles stud and first nut, makes things convenient for first casing and second casing to dismantle, and the maintenance of being convenient for in the first casing and in the second casing overhauls, the leakproofness of being connected between first casing of first sealing washer reinforcing of setting and the second casing.
Description
Technical Field
The invention relates to the technical field of arrow-shaped check valves, in particular to an arrow-shaped check valve with a sealing installation structure.
Background
The arrow-shaped check valve is used for being arranged between a drill pipe and a drill bit to prevent drilling fluid from flowing back from the bottom of a well, and the arrow-shaped check valve is a conversion joint, and other parts are arranged in an inner hole of the joint. When backflow occurs, the arrow-shaped valve core presses against the valve seat and fluid cannot flow upward through the check valve. When drilling fluid normally circulates, the arrow valve core falls to the undersetting, and the drilling fluid passes through the non return on the non-pressure drop ground, and current arrow type check valve functional structure is single, and inconvenient dismantlement is to inside case maintenance and repair, and can not be according to drilling rod and drill bit condition, tears the joint part of arrow type check valve open and trades, needs one kind now to have the arrow type check valve of seal installation structure to solve above-mentioned problem.
Disclosure of Invention
The invention aims to provide an arrow-shaped check valve with a sealing installation structure, and aims to solve the problems that the existing arrow-shaped check valve in the background art is single in function structure, inconvenient to disassemble and maintain an internal valve core, and incapable of disassembling and replacing a connector part of the arrow-shaped check valve according to the conditions of a drill rod and a drill bit.
In order to achieve the purpose, the invention provides the following technical scheme: an arrow check valve with a sealing installation structure comprises a first shell, a first connecting disc body, a first sealing ring and a filter screen frame,
a first spring is arranged in the first shell, one end of the first spring is connected with the valve core, and the upper end of the valve core penetrates through a limiting guide frame which is arranged in the first shell;
the first connecting disc body is arranged at the lower end of the first shell, the lower end of the first connecting disc body is in contact with the second connecting disc body, the second connecting disc body is arranged at the upper end of the second shell, and the righting devices are arranged on the outer sides of the second shell and the first shell.
Preferably, the first shell comprises a third connecting disc body, a fourth connecting disc body, a first connecting joint, a second sealing ring, a second bolt and a second nut, the third connecting disc body is arranged at the upper end of the first shell, and the third connecting disc body is connected with the fourth connecting disc body through the second bolt and the second nut.
Through adopting above-mentioned technical scheme, connect through second bolt and second nut between disk body and the second connection disk body, it is convenient to dismantle to connect the third.
Preferably, a second sealing ring is arranged between the fourth connecting disc body and the third connecting disc body, a first connecting head is arranged at the upper end of the fourth connecting disc body, and threads are arranged on the inner side and the outer side of the first connecting head.
Through adopting above-mentioned technical scheme, the second sealing washer increases the third and connects the disk body and connect the leakproofness between the disk body with the fourth.
Preferably, the first sealing ring is arranged between the first connecting disc body and the second connecting disc body, and the first connecting disc body and the second connecting disc body are connected through a stud and a first nut.
Through adopting above-mentioned technical scheme, dismantle stud and first nut, make things convenient for and dismantle between first casing and the second casing.
Preferably, the righting device is provided with two groups, the two groups of righting devices correspond to the first shell and the second shell respectively, the righting device is arranged in the mounting groove, the mounting groove is formed in the side face of the first shell and the side face of the second shell respectively, a first bolt penetrates through the righting device, the inner end of the first bolt above the righting device is in threaded connection with the first shell, and the inner end of the first bolt below the righting device is in threaded connection with the second shell.
Through adopting above-mentioned technical scheme, strengthen arrow type check valve use stability under righting the device effect.
Preferably, the righting device is including fixed ear, second spring, sleeve and ball, and the righting device outside is provided with fixed ear, and fixed ear is run through by first bolt simultaneously, be provided with the second spring in the righting device, and the second spring outer end is connected with the sleeve, and the righting device is run through to the sleeve outer end simultaneously, be provided with the ball in the sleeve, and the sleeve passes through the spout and rights for sliding connection between the device inner wall.
Through adopting above-mentioned technical scheme, the wearing and tearing when the reducible righting device of ball uses.
Preferably, the second shell comprises a fifth connecting disk body, a sixth connecting disk body, a second sealing ring, a second connector, a third bolt and a third nut, the fifth connecting disk body is arranged at the lower end of the second shell, and the fifth connecting disk body is connected with the sixth connecting disk body through the third bolt and the third nut.
Through adopting above-mentioned technical scheme, dismantle third bolt and third nut, make things convenient for the separation between fifth connection disk body and the sixth connection disk body for the second connector tear open and trade.
Preferably, a second sealing ring is arranged between the sixth connecting disc body and the fifth connecting disc body, a second connector is arranged at the lower end of the sixth connecting disc body, and threads are arranged on the inner side and the outer side of the second connector.
Through adopting above-mentioned technical scheme, the internal and external screw thread that the second connector set up increases connected mode.
Preferably, the screen frame sets up in the second casing, and the screen frame lower extreme is connected with the collection frame, run through on the screen frame and be provided with the screw rod, and the screw rod lower extreme runs through and collects a threaded connection on the support frame, and the support frame setting is on second shells inner wall simultaneously.
Through adopting above-mentioned technical scheme, the screen frame can filter the drilling fluid, reduces the wearing and tearing to the case.
Compared with the prior art, the invention has the beneficial effects that: the arrow type check valve having a sealing installation structure,
(1) according to the connection size condition of the drill rod and the drill bit, the second bolt and the second nut can be disassembled, the first connector is disassembled and replaced, the third bolt and the third nut are disassembled and replaced, and in addition, the first connector and the second connector are both provided with inner threads and outer threads, so that the connection mode is increased, and the applicability is improved;
(2) the first shell and the second shell are fixedly connected through the stud bolt and the first nut, the stud bolt and the first nut are disassembled, the first shell and the second shell are convenient to disassemble and separate, the first shell and the second shell are convenient to maintain and repair, and the first sealing ring is arranged to enhance the sealing property of the connection between the first shell and the second shell;
(3) the arranged centering device can play a role in centering, supporting and stabilizing the arrow-shaped check valve in the using process, the arrangement of the balls can reduce the abrasion of the centering device, and in addition, the centering device can play a buffering effect on the centering of the balls under the action of the second spring;
(4) the filter screen frame that sets up can play the filtering action to the drilling fluid that passes through, reduces the wearing and tearing of impurity to the case, dismantles the screw rod, can take out the filter screen frame and maintain or change, and the collection frame that sets up in addition can be collected the processing to filterable impurity.
Drawings
FIG. 1 is a schematic view of the structure of a strainer holder, a collection frame, a screw and a support frame according to the present invention;
FIG. 2 is a front sectional view of the first and second housings of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a schematic top view of the collecting rack of the present invention;
FIG. 5 is a schematic view of the fixing lug and the centralizer of the present invention;
fig. 6 is a schematic perspective view of the valve core of the present invention.
In the figure: 1. the connecting device comprises a first shell, 101, a third connecting disc body, 102, a fourth connecting disc body, 103, a first connector, 104, a second sealing ring, 105, a second bolt, 106, a second nut, 2, a first spring, 3, a valve core, 4, a limiting guide frame, 5, a first connecting disc body, 6, a second connecting disc body, 7, a first sealing ring, 8, a stud bolt, 9, a first nut, 10, a second shell, 1001, a fifth connecting disc body, 1002, a sixth connecting disc body, 1003, a second sealing ring, 1004, a second connector, 1005, a third bolt, 1006, a third nut, 11, a centering device, 1101, a fixing lug, 1102, a second spring, 1103, a sleeve, 1104, a ball, 12, a mounting groove, 13, a first bolt, 14, a filter screen frame, 15, a collection frame, 16, a screw, 17 and a support frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: an arrow check valve with a sealing installation structure, as shown in fig. 1, 2, 3 and 6, a first spring 2 is arranged in a first housing 1, one end of the first spring 2 is connected with a valve core 3, the upper end of the valve core 3 penetrates through a limiting guide frame 4, the first housing 1 comprises a third connecting disc 101, a fourth connecting disc 102, a first connecting head 103, a second sealing ring 104, a second bolt 105 and a second nut 106, the upper end of the first housing 1 is provided with the third connecting disc 101, the third connecting disc 101 is connected with the fourth connecting disc 102 through the second bolt 105 and the second nut 106, the first connecting head 103 can be replaced by disassembling the second bolt 105 and the second nut 106 according to the condition of a drill rod, the second sealing ring 104 is arranged between the fourth connecting disc 102 and the third connecting disc 101, and the upper end of the fourth connecting disc 102 is provided with the first connecting head 103, meanwhile, threads are arranged on the inner side and the outer side of the first connecting head 103, the connection mode of the drill rod is increased by the inner threads and the outer threads of the first connecting head 103, and the sealing performance of the fourth connecting disc body 102 and the third connecting disc body 101 is increased under the action of the second sealing ring 104.
As shown in fig. 2 and 3, the limiting guide frame 4 is disposed in the first housing 1, the first connecting tray 5 is disposed at the lower end of the first housing 1, the lower end of the first connecting tray 5 contacts with the second connecting tray 6, the first sealing ring 7 is disposed between the first connecting tray 5 and the second connecting tray 6, the first connecting tray 5 and the second connecting tray 6 are connected through the stud 8 and the first nut 9, the sealing performance between the first connecting tray 5 and the second connecting tray 6 is enhanced under the action of the first sealing ring 7, and the stud 8 and the first nut 9 are detached to facilitate the separation of the first connecting tray 5 and the second connecting tray 6, so as to detach the first housing 1 and the second housing 10.
As shown in fig. 1, 2, 3 and 5, the second connecting tray 6 is disposed at the upper end of the second casing 10, and the centering device 11 is disposed at the outer sides of the second casing 10 and the first casing 1, the second casing 10 includes a fifth connecting tray 1001, a sixth connecting tray 1002, a second sealing ring 1003, a second connector 1004, a third bolt 1005 and a third nut 1006, and the lower end of the second casing 10 is disposed with the fifth connecting tray 1001, and the fifth connecting tray 1001 is connected with the sixth connecting tray 1002 through the third bolt 1005 and the third nut 1006, and the fifth connecting tray 1001 and the sixth connecting tray 1002 are connected through the third bolt 1005 and the third nut 1006, so that the dismounting is convenient, and the second connector 1004 is replaced, the second sealing ring 1003 is disposed between the sixth connecting tray 1002 and the fifth connecting tray 1001, and the lower end of the sixth connecting tray 1002 is disposed with the second connector 1004, and the inner and outer sides of the second connector are disposed with threads 1005, the second sealing ring 1003 enhances the connection tightness between the sixth connecting disc body 1002 and the fifth connecting disc body 1001, in addition, the inner and outer threads of the second connector 1004 are increased and the connection mode of the drill bit is increased, two sets of the righting devices 11 are arranged, the two sets of the righting devices 11 respectively correspond to the first shell 1 and the second shell 10, the righting devices 11 are arranged in the installation grooves 12, the installation grooves 12 are respectively arranged on the side surfaces of the first shell 1 and the second shell 10, the first bolts 13 are arranged on the righting devices 11 in a penetrating mode, the inner ends of the first bolts 13 above the first bolts are in threaded connection with the first shell 1, the inner ends of the first bolts 13 below the first bolts are in threaded connection with the second shell 10, the first bolts 13 are disassembled and can be used for disassembling, maintaining or replacing the righting devices 11, the righting devices 11 can play a role in righting, supporting and stabilizing during the use of the arrow-shaped check valve under the action of the righting devices 11, and the righting devices 11 comprise fixing lugs 1101, and, Second spring 1102, sleeve 1103 and ball 1104, and the righting device 11 outside is provided with fixed ear 1101, fixed ear 1101 is run through by first bolt 13 simultaneously, be provided with second spring 1102 in the righting device 11, and second spring 1102 outer end is connected with sleeve 1103, righting device 11 is run through to sleeve 1103 outer end simultaneously, be provided with ball 1104 in the sleeve 1103, and sleeve 1103 passes through sliding connection between spout and the righting device 11 inner wall, can reduce the wearing and tearing when righting the use of righting device 11 under the effect of ball 1104, second spring 1102 can play the cushioning effect.
As shown in fig. 1, 2 and 4, the screen frame 14 is disposed in the second casing 10, the lower end of the screen frame 14 is connected with the collecting frame 15, the screen frame 14 is provided with the screw 16 in a penetrating manner, the lower end of the screw 16 penetrates through the collecting frame 15 and is connected to the supporting frame 17 in a threaded manner, the supporting frame 17 is disposed on the inner wall of the second casing 10, the collecting frame 15 can collect the filtered impurities, and the screen frame 14 can filter and reduce the abrasion of the impurities in the drilling fluid to the valve core 3.
According to the situation of a drill rod and a drill bit, the detachable first connector 103 and the detachable second connector 1004 are replaced for use, when the arrow check valve is normally used, the righting device 11 can righting, supporting and stabilizing the arrow check valve, the ball 1104 reduces abrasion of the righting device 11 when in use, the second spring 1102 can play a buffering effect on the arrow check valve, when drilling fluid flows back, the valve core 3 pulls the first spring 2 to press and seal, liquid cannot flow upwards through the valve core 3, when the drilling fluid is normally circulated and used, the drilling fluid does not pressure to pass through the valve core 3, the filter screen frame 14 can filter the drilling fluid, influence of impurities in the drilling fluid on the valve core 3 is reduced, the collecting frame 15 can collect filtered impurities, the detachable stud 8 and the first nut 9 can maintain and overhaul the inside of the first shell 1 and the second shell 10, the first sealing ring 7 enhances the connection sealing performance between the first shell 1 and the second shell 10, the detachable screw 16 can take out the filter screen frame 14 and the collecting frame 15 for maintenance and cleaning, the first bolt 13 is removed to remove and maintain the centralizer 11, which is not described in detail in this specification, and is well known to those skilled in the art.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
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 various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides an arrow type check valve with sealed mounting structure, includes first casing (1), first connection disk body (5), first sealing washer (7) and screen frame (14), its characterized in that:
a first spring (2) is arranged in the first shell (1), one end of the first spring (2) is connected with the valve core (3), meanwhile, the upper end of the valve core (3) penetrates through a limiting guide frame (4), and the limiting guide frame (4) is arranged in the first shell (1);
the first connection disc body (5) is arranged at the lower end of the first shell (1), the lower end of the first connection disc body (5) is in contact with the second connection disc body (6), the second connection disc body (6) is arranged at the upper end of the second shell (10), and the righting device (11) is arranged on the outer sides of the second shell (10) and the first shell (1).
2. An arrow-type check valve having a seal mounting structure as set forth in claim 1, wherein: the first shell (1) comprises a third connecting disc body (101), a fourth connecting disc body (102), a first connecting head (103), a second sealing ring (104), a second bolt (105) and a second nut (106), the third connecting disc body (101) is arranged at the upper end of the first shell (1), and meanwhile the third connecting disc body (101) is connected with the fourth connecting disc body (102) through the second bolt (105) and the second nut (106).
3. An arrow-type check valve having a seal mounting structure as set forth in claim 2, wherein: a second sealing ring (104) is arranged between the fourth connecting disc body (102) and the third connecting disc body (101), a first connecting head (103) is arranged at the upper end of the fourth connecting disc body (102), and threads are arranged on the inner side and the outer side of the first connecting head (103).
4. An arrow-type check valve having a seal mounting structure as set forth in claim 1, wherein: the first sealing ring (7) is arranged between the first connecting disc body (5) and the second connecting disc body (6), and the first connecting disc body (5) and the second connecting disc body (6) are connected through a stud bolt (8) and a first nut (9).
5. An arrow-type check valve having a seal mounting structure as set forth in claim 1, wherein: righting device (11) are provided with two sets ofly, and two sets of righting device (11) are corresponding with first casing (1) and second casing (10) respectively, righting device (11) set up in mounting groove (12), and mounting groove (12) set up respectively on first casing (1) and second casing (10) side, it is provided with first bolt (13) to run through on device (11), and the first bolt (13) the inner and first casing (1) threaded connection of top, and the first bolt (13) the inner and second casing (10) threaded connection of below simultaneously.
6. An arrow-type check valve having a seal mounting structure as set forth in claim 1, wherein: righting device (11) including fixed ear (1101), second spring (1102), sleeve (1103) and ball (1104), and righting device (11) outside and being provided with fixed ear (1101), fixed ear (1101) is run through by first bolt (13) simultaneously, be provided with second spring (1102) in righting device (11), and second spring (1102) outer end is connected with sleeve (1103), and righting device (11) is run through to sleeve (1103) outer end simultaneously, be provided with ball (1104) in sleeve (1103), and sleeve (1103) are through sliding connection between spout and righting device (11) inner wall.
7. An arrow-type check valve having a seal mounting structure as set forth in claim 1, wherein: the second shell (10) comprises a fifth connecting disc body (1001), a sixth connecting disc body (1002), a second sealing ring (1003), a second connecting head (1004), a third bolt (1005) and a third nut (1006), the fifth connecting disc body (1001) is arranged at the lower end of the second shell (10), and the fifth connecting disc body (1001) is connected with the sixth connecting disc body (1002) through the third bolt (1005) and the third nut (1006).
8. An arrow-type check valve having a seal mounting structure as set forth in claim 7, wherein: a second sealing ring (1003) is arranged between the sixth connecting disc body (1002) and the fifth connecting disc body (1001), a second connector (1004) is arranged at the lower end of the sixth connecting disc body (1002), and threads are arranged on the inner side and the outer side of the second connector (1004).
9. An arrow-type check valve having a seal mounting structure as set forth in claim 1, wherein: strainer rack (14) set up in second casing (10), and strainer rack (14) lower extreme is connected with and collects frame (15), it is provided with screw rod (16) to run through on strainer rack (14), and screw rod (16) lower extreme runs through and collects frame (15) threaded connection on support frame (17), and support frame (17) set up on second casing (10) inner wall simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408984.1A CN114718506A (en) | 2022-04-19 | 2022-04-19 | Arrow-shaped check valve with seal mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408984.1A CN114718506A (en) | 2022-04-19 | 2022-04-19 | Arrow-shaped check valve with seal mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114718506A true CN114718506A (en) | 2022-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210408984.1A Pending CN114718506A (en) | 2022-04-19 | 2022-04-19 | Arrow-shaped check valve with seal mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114718506A (en) |
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| WO2022040252A1 (en) * | 2020-08-18 | 2022-02-24 | Schlumberger Technology Corporation | Scale resistant backcheck valve |
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|---|---|---|---|---|
| CN2828307Y (en) * | 2005-03-10 | 2006-10-18 | 郑焰 | Arrow drilling tool check valve |
| RU109204U1 (en) * | 2011-04-26 | 2011-10-10 | ОАО "Тяжпрессмаш" | CHECK VALVE |
| RU2467158C1 (en) * | 2011-05-04 | 2012-11-20 | Открытое Акционерное Общество "Тяжпрессмаш" | Check valve for casing string |
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| CN210950045U (en) * | 2019-11-11 | 2020-07-07 | 大连瑞晟石油装备有限公司 | Arrow-shaped check valve |
| CN212249935U (en) * | 2020-05-18 | 2020-12-29 | 黑龙江北方双佳钻采机具有限责任公司 | Make things convenient for interior preventer of dismouting |
| CN212671703U (en) * | 2020-07-29 | 2021-03-09 | 大庆鑫得丰石油技术有限公司 | Anti-backflow downhole tool |
| CN212672490U (en) * | 2020-08-04 | 2021-03-09 | 自贡工业阀门制造有限公司 | Check valve with good sealing performance |
| WO2022040252A1 (en) * | 2020-08-18 | 2022-02-24 | Schlumberger Technology Corporation | Scale resistant backcheck valve |
| CN213627494U (en) * | 2020-11-23 | 2021-07-06 | 四川川庆石油钻采科技有限公司 | Forced arrow-shaped check valve |
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Application publication date: 20220708 |