CN111206894B - Well control manifold's filtration protection device - Google Patents
Well control manifold's filtration protection device Download PDFInfo
- Publication number
- CN111206894B CN111206894B CN202010128873.6A CN202010128873A CN111206894B CN 111206894 B CN111206894 B CN 111206894B CN 202010128873 A CN202010128873 A CN 202010128873A CN 111206894 B CN111206894 B CN 111206894B
- Authority
- CN
- China
- Prior art keywords
- ring
- well control
- main part
- control manifold
- fixed mounting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001914 filtration Methods 0.000 title claims abstract description 20
- 238000002955 isolation Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 239000004576 sand Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000001012 protector Effects 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 description 18
- 239000011435 rock Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000005553 drilling Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Details Of Valves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The embodiment of the invention discloses a filtering protection device for a well control manifold, which particularly relates to the field of filtering protection devices, and comprises a main body, wherein a cover flange is fixedly arranged at the upper end of the main body, a stud bolt is arranged in the cover flange, and a matched nut is arranged at one end of the stud bolt.
Description
Technical Field
The embodiment of the invention relates to the field of filter protection devices, in particular to a filter protection device for a well control manifold.
Background
In the petroleum drilling process, massive rock debris or other foreign matters coming out of a shaft enter well control equipment, are wrapped in high-pressure high-flow-rate well liquid to scour and cut the well control equipment, seriously influence the normal operation and service life of the well control equipment, and need related devices for filtering the massive rock debris coming out of the shaft and the underground foreign matters.
The prior art has the following defects: at present, no device for filtering rock debris and underground foreign matters exists, along with the acceleration of drilling and deepening of drilling depth, the well control risk is increased, and from the aspect of well control safety, special rock debris and underground foreign matter filtering protection devices are increasingly required to ensure the drilling safety.
Disclosure of Invention
Therefore, the embodiment of the invention provides a filtering protection device for a well control manifold, which is characterized in that when the filtering protection device is used, rock fragments are guided into a sand washing hole on one side by a chip remover and enter an inner cavity of a main body, the chips collide with a head cover at one end of a spacer sleeve in the guiding process, the head cover is propped by the support frame catheter, when the chips are collided, the head cover can extrude the support frame catheter to one side, the support frame catheter can be folded inwards along a connecting shaft to extrude the torsion spring on the connecting shaft, so that the impact generated by collision between the rock fragments and the head cover is buffered, the loss of the spacer sleeve is reduced, the service life of the spacer sleeve is prolonged, and the problem caused by low service life of the spacer sleeve in the prior art is solved.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the utility model provides a well control manifold's filtration protection device, includes the main part, the upper end fixed mounting of main part has the lid flange, the inside of lid flange is provided with the stud, the one end of stud is provided with assorted nut, main part and lid flange pass through stud fixed connection, fixed mounting has well flange steel ring between main part and the lid flange, the top center fixed mounting of lid flange has a through stop valve, the inside one side fixed mounting of main part has the spacer sleeve, the both sides fixed mounting of spacer sleeve has the locking ring, main part and spacer sleeve pass through locking ring fixed connection, one side fixed mounting of locking ring has the gasket, the both sides bottom embedding of main part has the end cap, the surface cover of end cap is equipped with female joint, the inner chamber has been seted up to the inside of main part, the sand punching hole's one end and inner chamber are linked together, the one end fixed mounting of spacer sleeve has the collar, one side fixed mounting of spacer sleeve has the mounting of collar, one side fixed mounting of collar has the pillar, the surface of pillar is equipped with the spacer sleeve, the first pivot is equipped with the pivot, the pivot is equipped with the support frame and is connected with the support frame, the pivot is equipped with the pivot, the pivot is fixed to the support frame.
Further, the support frame catheter is of a foldable structure, and two ends of the torsion spring are fixedly connected with the inner wall of the support frame catheter respectively.
Further, fixed buttons are arranged on two sides of the push ring and are in sliding connection with the push ring, and sliding blocks are fixedly arranged on two sides of the inner wall of the push ring.
Further, the sliding block is matched with the sliding groove, and is in sliding connection with the support column through the sliding groove.
Further, a side groove is formed in one side of the bottom end of the sliding block, a clamping block is fixedly mounted at one end of the fixing button, and the specification of the side groove is the same as that of the clamping block.
Further, the inner wall of the chute is provided with a plurality of clamping grooves matched with the clamping blocks, and the clamping grooves are arranged in a straight shape.
Further, the inner wall of the clamping groove is fixedly provided with a magnetic block, the bottom end of the straight-through stop valve is fixedly provided with a guide pipe, and the outer surface of the guide pipe is sleeved with a movable ring.
Further, the bottom fixed mounting of expansion ring has the puddler, the both sides surface fixed mounting of puddler has the side lever.
Further, the bottom of puddler be provided with the bearing, inside bottom fixed mounting have the bottom ring, puddler pass through bearing and bottom ring swing joint.
Further, a plurality of bevel gears are fixedly arranged on two sides of the side rod, and the bevel gears are arranged in a straight shape.
The embodiment of the invention has the following advantages:
1. Through setting up support frame pipe, torsional spring, pillar and collar, when using, the detritus ware can be with the detritus leading-in of sand washing hole of one side, get into the inner chamber of main part, the in-process piece can collide with the hood of spacer sleeve one end at leading-in, the hood struts it through the support frame pipe, when receiving the collision, the hood can be to one side extrusion support frame pipe, the support frame pipe can be along the connecting axial inwards folding, extrude the torsional spring on the connecting axle, thereby cushion the impact that the collision produced between detritus and the hood, thereby reduce the loss to the spacer sleeve, the life-span of spacer sleeve has been increased;
2. Through setting up pipe, puddler, side lever and awl tooth, when using, need open straight-through stop valve earlier, after using a period, need rotate the expansion ring on pipe top, rotate the puddler through the expansion ring, the stirring can rotate on the bottom ring through the bearing, the puddler drives the side lever and rotates, dredges the pipe, avoids the phenomenon that the pipe appears blockking up, at side lever pivoted in-process, can smash the dust of caking through side lever both sides awl tooth, conveniently dredges the inside of pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
Fig. 2 is a schematic view of the internal structure of the spacer provided in embodiment 1 of the present invention;
Fig. 3 is a schematic diagram of a folded structure of a support frame catheter according to embodiment 1 of the present invention;
FIG. 4 is a side view of a hood provided by embodiment 1 of the present invention;
Fig. 5 is an enlarged view at a of fig. 4 provided in embodiment 1 of the present invention.
Fig. 6 is a schematic structural diagram of a straight-through stop valve according to embodiment 1 of the present invention.
Fig. 7 is an internal schematic view of a catheter according to embodiment 1 of the present invention.
Fig. 8 is a schematic structural diagram of a gasket and a side bar according to embodiment 1 of the present invention.
In the figure: the novel high-pressure-resistant ball valve comprises a main body 1, a cover flange 2, a stud 3, a nut 4, a flange steel ring 5, a through stop valve 6, a spacer sleeve 7, a locking ring 8, a gasket 9, a plug 10, a female connector 11, an inner cavity 12, a sand punching hole 13, a head cover 14, a mounting ring 15, a supporting column 16, a first spring 17, a sliding groove 18, a push ring 19, a supporting frame guide pipe 20, a baffle ring 21, a connecting shaft 22, a torsion spring 23, a fixed button 24, a sliding block 25, a side groove 26, a clamping block 27, a clamping groove 28, a magnetic block 29, a guide pipe 30, a movable ring 31, a stirring rod 32, a side rod 33, a bearing 34, a bottom ring 35 and a conical tooth 36.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to the accompanying drawings of the specification 1-5, a filtration protection device for well control manifold of this embodiment comprises a main body 1, wherein a cover flange 2 is fixedly arranged at the upper end of the main body 1, a stud 3 is arranged in the cover flange 2, one end of the stud 3 is provided with a matched nut 4, the main body 1 and the cover flange 2 are fixedly connected through the stud 3, a middle flange steel ring 5 is fixedly arranged between the main body 1 and the cover flange 2, a through type stop valve 6 is fixedly arranged at the center of the top end of the cover flange 2, a spacer 7 is fixedly arranged at one side of the inner part of the main body 1, locking rings 8 are fixedly arranged at two sides of the spacer 7, the main body 1 and the spacer 7 are fixedly connected through the locking rings 8, gaskets 9 are fixedly arranged at one side of the locking rings 8, plugs 10 are embedded at the bottom ends of two sides of the main body 1, the outer surface of the plug 10 is sleeved with a female joint 11, an inner cavity 12 is arranged in the main body 1, a sand flushing hole 13 is arranged on one side of the inner part of the main body 1, one end of the sand flushing hole 13 is communicated with the inner cavity 12, one end of the isolation sleeve 7 is fixedly provided with a hood 14, one side of the inner part of the isolation sleeve 7 is fixedly provided with a mounting ring 15, one side of the mounting ring 15 is fixedly provided with a support column 16, the outer surface of the support column 16 is sleeved with a first spring 17, the outer surface of the support column 16 is provided with a sliding groove 18, the outer surface of the support column 16 is provided with a push ring 19 in a sliding connection with the support column 16 through the sliding groove 18, the outer side of the push ring 19 is movably provided with a support frame guide pipe 20, one end of the support frame guide pipe 20 is fixedly connected with the periphery of the hood 14, one end of the push ring 19 is fixedly provided with a baffle ring 21, the inside of support frame pipe 20 is provided with connecting axle 22, the surface cover of connecting axle 22 is equipped with torsional spring 23.
Further, the support frame catheter 20 is of a foldable structure, and two ends of the torsion spring 23 are fixedly connected with the inner wall of the support frame catheter 20 respectively.
Further, fixed buttons 24 are arranged on two sides of the push ring 19, the fixed buttons 24 are slidably connected with the push ring 19, and sliding blocks 25 are fixedly arranged on two sides of the inner wall of the push ring 19.
Further, the sliding block 25 is matched with the sliding groove 18, and the sliding block 25 is slidably connected with the supporting column 16 through the sliding groove 18.
Further, a side groove 26 is formed at one side of the bottom end of the slider 25, a clamping block 27 is fixedly mounted at one end of the fixing button 24, and the specification of the side groove 26 is the same as that of the clamping block 27.
Further, the inner wall of the chute 18 is provided with a plurality of clamping grooves 28 matched with the clamping blocks 27, and the clamping grooves 28 are arranged in a straight line.
The implementation scene is specifically as follows: when the invention is used, the filtering protection device can guide rock scraps and underground foreign matters into the inner cavity 12 of the main body 1 from the sand flushing hole 13 at one side, the scraps and the underground foreign matters collide with the head cover 14 at one end of the isolation sleeve 7 in the guiding process, the head cover 14 is propped open by the support frame guide pipe 20, when the head cover 14 collides, the support frame guide pipe 20 is extruded to one side by the head cover 14, the support frame guide pipe 20 is folded inwards along the connecting shaft 22, the torsion spring 23 on the connecting shaft 22 is extruded, so that the impact generated by collision between the rock scraps and the head cover 14 is buffered, the loss of the isolation sleeve 7 is reduced, the service life of the isolation sleeve 7 is prolonged, when the isolation sleeve 7 is required to be retracted, the fixing button 24 on the push ring 19 can be pulled outwards, the clamping block 27 at one end of the fixing button 24 is separated from the clamping groove 28, then the mounting ring 15 is moved to one side along the sliding groove 18 on the support post 16, the support frame guide pipe 20 at one side of the first spring 17 is extruded, the push ring 19 is retracted inwards, the head cover 14 is retracted inwards, the corresponding clamping block 28 is retracted, and the clamping block 27 is correspondingly inserted into the clamping groove 27 through the clamping groove 29, and the clamping block 27 is fixed in the clamping groove 27, so that the clamping block is correspondingly inserted into the clamping block 27.
Referring to fig. 4-6 of the specification, in the filtering protection device for well control manifold of this embodiment, a magnetic block 29 is fixedly installed on the inner wall of the clamping groove 28, a conduit 30 is fixedly installed at the bottom end of the straight-through stop valve 6, and a movable ring 31 is sleeved on the outer surface of the conduit 30.
Further, a stirring rod 32 is fixedly installed at the bottom end of the movable ring 31, and side rods 33 are fixedly installed on the outer surfaces of two sides of the stirring rod 32.
Further, a bearing 34 is disposed at the bottom end of the stirring rod 32, a bottom ring 35 is fixedly mounted at the bottom end of the interior of the stirring rod 30, and the stirring rod 32 is movably connected with the bottom ring 35 through the bearing 34.
Further, a plurality of bevel teeth 36 are fixedly mounted on two sides of the side bar 33, and the plurality of bevel teeth 36 are arranged in a straight line.
The implementation scene is specifically as follows: when the straight-through stop valve 6 is needed to be opened firstly in use, after the straight-through stop valve is used for a period of time, the movable ring 31 at the top end of the guide pipe 30 is needed to be rotated, the stirring rod 32 is rotated on the bottom ring 35 through the movable ring 31, the stirring rod 32 drives the side rod 33 to rotate through the bearing 34, the guide pipe 30 is dredged, the phenomenon that the guide pipe 30 is blocked is avoided, and in the rotating process of the side rod 33, agglomerated dust can be crushed through the bevel teeth 36 at two sides of the side rod 33, so that the inside of the guide pipe 30 is dredged conveniently.
Working principle: referring to fig. 1-5 of the specification, when the device is used, the filtering and protecting device can guide rock scraps and underground foreign matters into the inner cavity 12 of the main body 1 from the sand flushing hole 13 at one side, the scraps collide with the head cover 14 at one end of the isolation sleeve 7 in the guiding process, the head cover 14 is propped against the support frame guide pipe 20 through the support frame guide pipe 20, when the head cover 14 is collided, the support frame guide pipe 20 is extruded to one side, the support frame guide pipe 20 is folded inwards along the connecting shaft 22, the torsion spring 23 on the connecting shaft 22 is extruded, thereby buffering the impact generated by collision between the rock scraps and the head cover 14, reducing the loss of the isolation sleeve 7, prolonging the service life of the isolation sleeve 7, when the isolation sleeve 7 is required to be retracted, the fixing button 24 on the push ring 19 can be pulled outwards, the clamping block 27 at one end of the fixing button 24 is separated from the clamping groove 28, then the mounting ring 15 is moved to one side along the sliding groove 18 on the strut 16, the support frame guide pipe 20 is extruded to one side, the first spring 17 is retracted inwards, the support frame guide pipe 20 is retracted inwards, the inner side 14 is retracted, the corresponding clamping block 28 is inserted into the clamping block 27 through the corresponding clamping groove 29, and the corresponding clamping block 27 is fixed into the clamping block 28, and the clamping block is fixed in the clamping block 19 through the corresponding clamping groove.
Referring to fig. 6-8 of the specification, when the straight-through stop valve 6 is needed to be opened firstly, after the straight-through stop valve is used for a period of time, the movable ring 31 at the top end of the guide pipe 30 needs to be rotated, the stirring rod 32 rotates on the bottom ring 35 through the movable ring 31, the stirring rod 32 drives the side rod 33 to rotate, the guide pipe 30 is dredged, the blocking phenomenon of the guide pipe 30 is avoided, and in the rotating process of the side rod 33, agglomerated dust is crushed through the bevel teeth 36 on two sides of the side rod 33, so that the inside of the guide pipe 30 is dredged conveniently.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (8)
1. The utility model provides a well control manifold's filtration protection device, includes main part (1), its characterized in that: the utility model discloses a sand cover, including main part (1), upper end fixed mounting of main part (1) has lid flange (2), the inside of lid flange (2) is provided with stud (3), the one end of stud (3) is provided with assorted nut (4), main part (1) and lid flange (2) pass through stud (3) fixed connection, fixed mounting has well flange steel ring (5) between main part (1) and lid flange (2), the top center fixed mounting of lid flange (2) has straight-through stop valve (6), the inside one side fixed mounting of main part (1) has isolation sleeve (7), the both sides fixed mounting of isolation sleeve (7) have locking ring (8), one side fixed mounting of locking ring (8) has gasket (9), the both sides bottom embedding of main part (1) has end cap (10), the surface cover of end cap (10) is equipped with female joint (11), the inside of main part (1) has inner chamber (12), the inside one side fixed mounting of isolation sleeve (7) has locking ring (13) and sand cover (13) are connected, one end of sand cover (13) is connected with sand cover (13), the novel isolation sleeve is characterized in that a mounting ring (15) is fixedly mounted on one side of the inside of the isolation sleeve (7), a support column (16) is fixedly mounted on one side of the mounting ring (15), a first spring (17) is sleeved on the outer surface of the support column (16), a sliding groove (18) is formed in the outer surface of the support column (16), a push ring (19) is sleeved on the outer side of the sliding groove (18), the push ring (19) is in sliding connection with the support column (16) through the sliding groove (18), a support frame guide pipe (20) is movably mounted on the outer side of the push ring (19), one end of the support frame guide pipe (20) is fixedly connected with the periphery of the hood (14), a baffle ring (21) is fixedly mounted on one end of the push ring (19), a connecting shaft (22) is arranged in the support frame guide pipe (20), and a torsion spring (23) is sleeved on the outer surface of the connecting shaft (22).
The support frame catheter (20) is of a foldable structure, and two ends of the torsion spring (23) are fixedly connected with the inner wall of the support frame catheter (20) respectively;
The two sides of the push ring (19) are provided with fixed buttons (24), the fixed buttons (24) are in sliding connection with the push ring (19), and sliding blocks (25) are fixedly arranged on two sides of the inner wall of the push ring (19).
2. The filtration protection device for a well control manifold of claim 1, wherein: the sliding block (25) is matched with the sliding groove (18), and the sliding block (25) is in sliding connection with the support column (16) through the sliding groove (18).
3. A filtration protection device for a well control manifold as defined in claim 2, wherein: a side groove (26) is formed in one side of the bottom end of the sliding block (25), a clamping block (27) is fixedly mounted at one end of the fixed button (24), and the specification of the side groove (26) is the same as that of the clamping block (27).
4. A filtration protection device for a well control manifold according to claim 3, wherein: the inner wall of the chute (18) is provided with a plurality of clamping grooves (28) matched with the clamping blocks (27), and the clamping grooves (28) are arranged in a straight shape.
5. The well control manifold filter protector of claim 4, wherein: the inner wall of the clamping groove (28) is fixedly provided with a magnetic block (29), the bottom end of the straight-through stop valve (6) is fixedly provided with a guide pipe (30), and the outer surface of the guide pipe (30) is sleeved with a movable ring (31).
6. The well control manifold filter protector of claim 5, wherein: the bottom end of the movable ring (31) is fixedly provided with a stirring rod (32), and side rods (33) are fixedly arranged on the outer surfaces of two sides of the stirring rod (32).
7. The filtration protection device for a well control manifold of claim 6, wherein: the bottom of puddler (32) is provided with bearing (34), the inside bottom fixed mounting of pipe (30) has bottom ring (35), puddler (32) pass through bearing (34) and bottom ring (35) swing joint.
8. The filtration protection device for a well control manifold of claim 6, wherein: a plurality of bevel gears (36) are fixedly arranged on two sides of the side rod (33), and the bevel gears (36) are arranged in a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128873.6A CN111206894B (en) | 2020-02-28 | 2020-02-28 | Well control manifold's filtration protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128873.6A CN111206894B (en) | 2020-02-28 | 2020-02-28 | Well control manifold's filtration protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111206894A CN111206894A (en) | 2020-05-29 |
| CN111206894B true CN111206894B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010128873.6A Active CN111206894B (en) | 2020-02-28 | 2020-02-28 | Well control manifold's filtration protection device |
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| CN (1) | CN111206894B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211819292U (en) * | 2020-02-28 | 2020-10-30 | 重庆新泰机械有限责任公司 | Filtering protection device of well control manifold |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9131667B2 (en) * | 2000-08-17 | 2015-09-15 | E. Bayne Carew | Filter apparatus |
| KR100380362B1 (en) * | 2000-12-12 | 2003-04-11 | 현대자동차주식회사 | Impact Absorbing Apparatus of Hood for Car |
| KR200357374Y1 (en) * | 2004-05-13 | 2004-07-27 | 조순래 | Mower safety knife |
| US9168493B1 (en) * | 2010-12-28 | 2015-10-27 | Brent Lee | Waste water treatment system |
| CN102797432A (en) * | 2012-08-23 | 2012-11-28 | 中国石油天然气股份有限公司 | Anti-scour short section for throttle manifold |
| CN208799847U (en) * | 2018-07-27 | 2019-04-30 | 河北源泉地热能科技有限公司 | A kind of geothermal reinjection well pressure control private filter |
| CN209339896U (en) * | 2018-11-29 | 2019-09-03 | 东营市元捷石油机械有限公司 | A kind of oil production wellhead protective device |
| CN109603257B (en) * | 2019-01-24 | 2021-07-02 | 格润克利环境科技有限公司 | Split type sewage impurity filtering device |
| CN210021423U (en) * | 2019-04-18 | 2020-02-07 | 山东甄沃食品科技有限公司 | Food and beverage filter equipment |
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2020
- 2020-02-28 CN CN202010128873.6A patent/CN111206894B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211819292U (en) * | 2020-02-28 | 2020-10-30 | 重庆新泰机械有限责任公司 | Filtering protection device of well control manifold |
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