CN111021526B - Mud suction device capable of randomly changing diameter of mud suction port for deep well - Google Patents
Mud suction device capable of randomly changing diameter of mud suction port for deep well Download PDFInfo
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- CN111021526B CN111021526B CN202010020601.4A CN202010020601A CN111021526B CN 111021526 B CN111021526 B CN 111021526B CN 202010020601 A CN202010020601 A CN 202010020601A CN 111021526 B CN111021526 B CN 111021526B
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- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000003911 water pollution Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 9
- 239000010865 sewage Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
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- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of deep well dredging equipment, and discloses a mud suction device aiming at a deep well, which can randomly change the diameter of a mud suction port, and comprises a sleeve, an annular pipe, a mud suction pipe and a sensor group arranged on the wall of the mud suction pipe, and is characterized in that: along fixedly connected with baffle and closing plate respectively in the sheathed tube upper and lower both ends mouth of pipe department, the common fixedly connected with installation pipe in one side that baffle and closing plate are relative, the installation intraductal coupling has drive mechanism, runs through the liquid passageway of crossing who sets up a plurality of slopes between the upper and lower both sides of closing plate, and a plurality of liquid passageways of crossing are the annular distribution. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port can randomly adjust the diameter of the mud suction device within a certain diameter range, is suitable for the deep wells with different diameters, and can form a sealed area from the mud suction device to the bottom of the well, so that the mud at the bottom of the well is not easy to diffuse to the surrounding water body to cause clear water pollution.
Description
Technical Field
The invention relates to the technical field of deep well dredging equipment, in particular to a mud suction device which aims at a deep well and can randomly change the diameter of a mud suction port.
Background
The urban drainage system is an engineering facility system for treating and discharging urban sewage and rainwater, and is a component of urban public facilities, the urban drainage system is generally composed of a rainwater cellar, a drainage pipeline and a sewage treatment plant, under the condition of carrying out sewage and rainwater split-flow system, the sewage is collected by the drainage pipeline, after being sent to the sewage treatment, rainwater runoff is collected by the drainage pipeline and is discharged into water body nearby, in order to reduce sediment in the rainwater from depositing in a rainwater pipeline, the rainwater cellar is mostly designed as a deep well, the sediment can be effectively deposited, the trouble of pipeline blockage is reduced, only the rainwater deep well needs to be cleaned regularly, but the existing sludge dredging device is large in volume, is suitable for wide areas such as natural water areas, cannot effectively clean the deep well in the face of such narrow working areas, and cannot form a closed space when cleaning bottom sludge, the sludge at the bottom of the well can spread everywhere to cause the clear water at the upper layer to be turbid for the second time, thereby increasing the cleaning difficulty and the working time.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a mud suction device aiming at a deep well, which can randomly change the diameter of a mud suction port, and has the advantages that the diameter of the mud suction device can be randomly adjusted in a certain diameter range, the mud suction device is suitable for the deep wells with different diameters, a sealed area can be formed after the mud suction device is arranged at the bottom of the well, the sludge at the bottom of the well is not easy to diffuse to the surrounding water body to cause pollution of clear water, and the like, and the problems that the existing dredging device cannot effectively clean the sludge in a narrow working area such as the deep well, the dredging device cannot form a sealed space when cleaning the sludge at the bottom of the well, the sludge at the bottom of the well can diffuse all around to cause secondary turbidity of the clear water at the upper layer.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a mud suction device aiming at a deep well and capable of randomly changing the diameter of a mud suction port comprises a sleeve, an annular pipe, the mud suction pipe and a sensor group arranged on the pipe wall of the mud suction pipe, wherein the inner edges of the pipe ports at the upper end and the lower end of the sleeve are respectively and fixedly connected with a baffle plate and a sealing plate, one side, opposite to the baffle plate and the sealing plate, of the sleeve is jointly and fixedly connected with an installation pipe, the installation pipe is internally connected with a transmission mechanism, a plurality of obliquely arranged liquid passing channels penetrate through the upper side and the lower side of the sealing plate and are distributed annularly, a plurality of arc-shaped support rods are rotatably connected at the pipe port at the lower end of the sleeve through a rotating shaft, elastic enclosing cloth is jointly and fixedly connected among the arc-shaped support rods, the lower end of the sleeve is transversely provided with the annular ring, a plurality of clamping grooves are uniformly formed in the edge of the annular ring and are respectively and slidably, the inner side of the circular ring is fixedly connected with the filter plate, the upper end of the circular ring is fixedly connected with a plurality of uniformly distributed connecting rods, one ends, far away from the circular ring, of the connecting rods are connected with the transmission mechanism, the circular pipe is fixedly connected with the pipe wall of the sleeve, the annular pipe is internally connected with the positioning mechanism, and the right side of the upper end of the baffle is fixedly connected with the pipe wall of the sludge suction pipe through a circular hole.
Preferably, the transmission mechanism comprises a circular plate which is sleeved in the installation pipe in a sliding manner, the center of the circular plate is connected with a transmission rod through a circular opening, a plurality of sealing rings which are uniformly distributed are fixedly connected in the circular opening, the inner sides of the sealing rings are all sleeved with the rod wall of the transmission rod in a sliding manner, the center of the sealing plate is connected with the rod wall of the transmission rod in a sliding manner through a positioning hole, the lower end of the transmission rod penetrates through the positioning hole and is fixedly connected with one end, away from the circular ring, of the connection rod, a blind hole is formed in the upper end of the transmission rod, a threaded sleeve is fixedly connected in the blind hole, a screw rod is connected in the threaded sleeve in a threaded manner, a first motor is fixedly connected to the lower end.
Preferably, the rod wall of the screw rod is rotatably connected with a transversely arranged positioning rod through a rolling bearing, and two ends of the positioning rod are fixedly connected with the inner walls of two opposite sides of the installation pipe respectively.
Preferably, the lower end of the positioning rod is symmetrically and fixedly connected with two guide rods, and the side wall of the circular plate is respectively connected with the rod walls of the two guide rods in a sliding manner through guide holes.
Preferably, the positioning mechanism comprises a plurality of support rods obliquely arranged in the annular pipe, a plurality of obliquely arranged through holes are formed in the pipe wall of the annular pipe, one ends of the plurality of support rods respectively penetrate through the plurality of through holes and are fixedly connected with the positioning plate, a gear ring is arranged in the annular pipe, the inner side of the gear ring is connected with an annular slide block through an annular sliding chute in a sliding way, the inner side of the annular slide block is fixedly connected with the inner wall of the annular tube, the lower end of the gear ring is rotationally connected with a plurality of pull rods through shaft pins, one ends of the pull rods, far away from the gear ring, are respectively rotationally connected with the rod walls of the support rods through rotating shafts, a waterproof cover is fixedly connected on the pipe wall of the annular pipe, a second motor is fixedly connected in the waterproof cover, the tail end of an output shaft of the second motor penetrates through the pipe wall of the annular pipe and is fixedly connected with a gear, and the gear is meshed with the gear ring.
Preferably, a plurality of tension springs which are uniformly distributed are fixedly connected to the rod wall of the transmission rod, and one ends, far away from the transmission rod, of the tension springs are respectively and fixedly connected with the rod walls of the arc-shaped support rods.
Preferably, the lower end of the circular ring is fixedly connected with a plurality of supporting legs which are uniformly distributed, and the supporting legs are distributed annularly.
(III) advantageous effects
Compared with the prior art, the invention provides a mud suction device aiming at a deep well, which can randomly change the diameter of a mud suction port, and has the following beneficial effects:
1. when the device is used, the mud suction device is hoisted in a deep well, the mud suction pipe is connected with an external high-pressure mud suction machine, the first motor is started to drive the screw rod to move the threaded sleeve, the threaded sleeve moves to drive the transmission rod to move the connecting rod, the connecting rod moves to drive the circular ring to enable the arc-shaped support rod to swing around the rotating shaft, and when the arc-shaped support rod swings, the elastic enclosing cloth can be unfolded at the bottom of the well to form a relatively sealed working space, so that the application range of the mud suction device can be quickly adjusted according to the diameter of the deep well, and supernatant liquid in the deep well is not easily polluted during working.
2. When the positioning mechanism is used, the second motor is started to drive the gear ring to rotate, the gear ring rotates to drive the pull rod to move the support rod, the support rod extends out of the annular pipe when moving, and the positioning plate is further contacted with the wall of the deep well, so that the mud suction device can be fixed in the deep well, and the phenomenon that the mud suction device rotates when working due to viscous mud, and the working efficiency of the mud suction device is influenced is avoided.
Drawings
Fig. 1 is a schematic structural view of a mud suction device which can arbitrarily change the diameter of a mud suction port for a deep well according to the present invention;
fig. 2 is a schematic view of a sealing plate in fig. 1 of a mud suction device for a deep well according to the present invention, wherein the diameter of a mud suction port can be arbitrarily changed;
FIG. 3 is a top view of the internal structure of the circular pipe in FIG. 1 of the mud suction device for deep wells according to the present invention, wherein the diameter of the mud suction port can be changed arbitrarily;
fig. 4 is an enlarged structural view of a portion a in fig. 1 of the mud suction device which can arbitrarily change the diameter of a mud suction port for a deep well according to the present invention;
fig. 5 is an enlarged structural view of a mud suction device which can arbitrarily change the diameter of a mud suction port for a deep well according to the present invention, shown at B in fig. 1.
In the figure: the device comprises a sleeve pipe 1, a ring pipe 2, a connecting rod 3, supporting feet 4, a filtering plate 5, a ring 6, elastic enclosing cloth 7, an arc-shaped supporting rod 8, a supporting rod 9, a positioning plate 10, a baffle 11, a first motor 12, a positioning rod 13, a guide rod 14, a transmission rod 15, a lead screw 16, a sealing plate 17, a tension spring 18, a sludge suction pipe 19, a pull rod 20, a circular plate 21, a threaded sleeve 22, a second motor 23, a waterproof shield 24, an annular sliding block 25, a gear ring 26, a gear wheel 27 and an installation pipe 28.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a mud suction device aiming at a deep well and capable of randomly changing the diameter of a mud suction port comprises a sleeve 1, an annular pipe 2, a mud suction pipe 19 and a sensor group arranged on the pipe wall of the mud suction pipe 19, wherein the inner edges of the upper end pipe orifice and the lower end pipe orifice of the sleeve 1 are respectively fixedly connected with a baffle plate 11 and a sealing plate 17, one side of the baffle plate 11 opposite to one side of the sealing plate 17 is jointly and fixedly connected with a mounting pipe 28, the mounting pipe 28 is internally connected with a transmission mechanism, a plurality of obliquely arranged liquid passing channels are arranged between the upper side and the lower side of the sealing plate 17 in a penetrating way and distributed in an annular shape, the liquid passing channels can enable sewage entering the mud suction device to form a vortex, so that sediment in the sewage is prevented from being deposited in the mud suction device, the lower end pipe orifice of the sleeve 1 is rotatably connected with a plurality of uniformly distributed arc-shaped support rods 8 through a rotating shaft, an elastic enclosure 7 is jointly and fixedly connected between the, supporting legs 4 of a plurality of evenly distributed of lower extreme fixedly connected with of ring 6, a plurality of supporting legs 4 are the annular distribution, supporting legs 4 can support and inhale mud device, it is convenient for rivers to get into in the sleeve pipe 1, a plurality of draw-in grooves have evenly been seted up to the edge of ring 6, a plurality of draw-in grooves respectively with a plurality of arc vaulting pole 8's pole wall sliding connection, ring 6's inboard fixedly connected with filter 5, a plurality of evenly distributed's of upper end fixedly connected with connecting rod 3 of ring 6, the one end that ring 6 was kept away from to a plurality of connecting rods 3 all is connected with drive mechanism, ring 2 and sleeve pipe 1's pipe wall fixed connection, 2 in-connection of ring has positioning mechanism, the pipe wall fixed connection of round hole and mud sucking pipe 19 is passed through on the upper.
The transmission mechanism comprises a circular plate 21 which is sleeved in the installation pipe 28 in a sliding manner, the center of the circular plate 21 is connected with a transmission rod 15 through a circular opening, a plurality of sealing rings which are uniformly distributed are fixedly connected in the circular opening, the inner sides of the sealing rings are all sleeved with the rod wall of the transmission rod 15 in a sliding manner, the center of the sealing plate 17 is connected with the rod wall of the transmission rod 15 through a positioning hole in a sliding manner, the lower end of the transmission rod 15 penetrates through the positioning hole and is fixedly connected with one end, far away from the circular ring 6, of the connecting rod 3, a plurality of tension springs 18 which are uniformly distributed are fixedly connected on the rod wall of the transmission rod 15, one ends, far away from the transmission rod 15, of the tension springs 18 are respectively and fixedly connected with the rod walls of the arc-shaped support rods 8, the tension springs 18 can prevent the arc-shaped support rods 8 from being separated from the circular, the lower extreme fixedly connected with first motor 12 of baffle 11, the output of first motor 12 and the upper end fixed connection of lead screw 16, be connected with the locating lever 13 of horizontal setting through antifriction bearing rotation on the pole wall of lead screw 16, the both ends of locating lever 13 respectively with the relative both sides inner wall fixed connection of installation pipe 28, stability when locating lever 13 can increase the lead screw 16 atress, two guide bar 14 of lower extreme symmetry fixedly connected with of locating lever 13, the lateral wall of plectane 21 passes through the guiding hole respectively with the pole wall sliding connection of two guide bar 14.
When the device is used, the mud suction device is hoisted in a deep well, the mud suction pipe 19 is connected with an external high-pressure mud suction machine (not shown in the figure), the first motor 12 is started to drive the screw rod 16 to move the threaded sleeve 22, the threaded sleeve 22 moves to drive the transmission rod 15 to move the connection rod 3, the connection rod 3 moves to drive the circular ring 6 to enable the arc-shaped support rod 8 to swing around the rotating shaft, when the arc-shaped support rod 8 swings, the elastic surrounding cloth 7 can be unfolded at the bottom of the well to form a relatively sealed working space, the application range of the mud suction device can be rapidly adjusted according to the diameter of the deep well, and supernatant in the deep well is not easily polluted during working.
Example 2: the difference is based on example 1;
positioning mechanism sets up a plurality of bracing pieces 9 in ring pipe 2 including the slope, set up the through-hole that a plurality of slopes set up on the pipe wall of ring pipe 2, a plurality of through-holes are passed respectively to the one end of a plurality of bracing pieces 9 and fixedly connected with locating plate 10, be equipped with ring gear 26 in the ring pipe 2, ring gear 26's inboard has annular slider 25 through annular spout sliding connection, annular slider 25's inboard and ring pipe 2's inner wall fixed connection, ring gear 26's lower extreme is connected with a plurality of pull rods 20 through the pivot rotation, the one end that ring gear 26 was kept away from to a plurality of pull rods 20 all rotates with the pole wall of a plurality of bracing pieces 9 respectively through the rotation axis and is connected, fixedly connected with buckler 24 on the pipe wall of ring pipe 2, fixedly connected with second motor 23 in the buckler 24, the output shaft end of second motor 23 runs through ring pipe 2's pipe wall and fixedly.
When the positioning mechanism is used, the second motor 23 is started to drive the gear 27 to rotate the gear ring 26, the gear ring 26 rotates to drive the pull rod 20 to move the support rod 9, the support rod 9 extends out of the annular pipe 2 when moving, and the positioning plate 10 is further contacted with the wall of a deep well, so that the mud suction device can be fixed in the deep well, and the phenomenon that the mud suction device rotates when working due to viscous mud to affect the working efficiency of the mud suction device is avoided.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a can change mud suction device of mud suction opening diameter wantonly to deep well, includes sleeve pipe (1), annular pipe (2), suction dredge (19) and sets up the sensor group on suction dredge (19) pipe wall, its characterized in that: the inner edges of pipe orifices at the upper end and the lower end of the sleeve pipe (1) are fixedly connected with a baffle plate (11) and a sealing plate (17) respectively, one side of the sleeve pipe (11) opposite to the sealing plate (17) is fixedly connected with an installation pipe (28) together, a transmission mechanism is connected in the installation pipe (28), a plurality of obliquely arranged liquid passing channels are arranged between the upper side and the lower side of the sealing plate (17) in a penetrating manner and are distributed annularly, a plurality of arc-shaped support rods (8) are rotatably connected at the pipe orifice at the lower end of the sleeve pipe (1) through a rotating shaft and are uniformly distributed, elastic enclosing cloth (7) is fixedly connected between the arc-shaped support rods (8) together, a circular ring (6) is transversely arranged at the lower end of the sleeve pipe (1), a plurality of clamping grooves are uniformly arranged at the edge of the circular ring (6) and are respectively connected with the rod walls of the arc-shaped support rods (8, inboard fixedly connected with filter (5) of ring (6), a plurality of evenly distributed's of the upper end fixedly connected with connecting rod (3) of ring (6), it is a plurality of the one end that ring (6) were kept away from in connecting rod (3) all is connected with drive mechanism, the pipe wall fixed connection of ring pipe (2) and sleeve pipe (1), ring pipe (2) in-connection has positioning mechanism, the pipe wall fixed connection of round hole and suction dredge (19) is passed through on the upper end right side of baffle (11).
2. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port according to the claim 1, is characterized in that: the transmission mechanism comprises a circular plate (21) which is sleeved in the installation pipe (28) in a sliding way, the center of the circular plate (21) is connected with a transmission rod (15) through a circular opening, and a plurality of sealing rings which are evenly distributed are fixedly connected in the round opening, the inner sides of the plurality of sealing rings are all in sliding sleeve joint with the rod wall of the transmission rod (15), the center of the sealing plate (17) is connected with the rod wall of the transmission rod (15) in a sliding way through a positioning hole, the lower end of the transmission rod (15) penetrates through the positioning hole and is fixedly connected with one end of the connecting rod (3) far away from the circular ring (6), the upper end of the transmission rod (15) is provided with a blind hole, a threaded sleeve (22) is fixedly connected in the blind hole, the threaded sleeve (22) is internally threaded with a screw rod (16), the lower end of the baffle (11) is fixedly connected with a first motor (12), the output end of the first motor (12) is fixedly connected with the upper end of the screw rod (16).
3. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port according to the claim 2, is characterized in that: the wall of the screw rod (16) is rotatably connected with a transversely arranged positioning rod (13) through a rolling bearing, and two ends of the positioning rod (13) are fixedly connected with the inner walls of two opposite sides of the mounting pipe (28) respectively.
4. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port according to the claim 3, is characterized in that: the lower end of the positioning rod (13) is symmetrically and fixedly connected with two guide rods (14), and the side wall of the circular plate (21) is respectively in sliding connection with the rod walls of the two guide rods (14) through guide holes.
5. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port according to the claim 1, is characterized in that: the positioning mechanism comprises a plurality of supporting rods (9) which are obliquely arranged in the annular pipe (2), a plurality of through holes which are obliquely arranged are formed in the pipe wall of the annular pipe (2), one ends of the supporting rods (9) penetrate through the through holes and are fixedly connected with the positioning plate (10) respectively, a gear ring (26) is arranged in the annular pipe (2), the inner side of the gear ring (26) is connected with an annular sliding block (25) through an annular sliding groove in a sliding manner, the inner side of the annular sliding block (25) is fixedly connected with the inner wall of the annular pipe (2), the lower end of the gear ring (26) is rotatably connected with a plurality of pull rods (20) through shaft pins, one ends, far away from the gear ring (26), of the pull rods (20) are respectively rotatably connected with the rod walls of the supporting rods (9) through rotating shafts, and a waterproof cover (24) is fixedly connected to the pipe wall of the, fixedly connected with second motor (23) in buckler (24), the output shaft end of second motor (23) runs through the pipe wall of ring pipe (2) and fixedly connected with gear (27), gear (27) and ring gear (26) meshing.
6. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port according to the claim 2, is characterized in that: the wall of the transmission rod (15) is fixedly connected with a plurality of uniformly distributed tension springs (18), and one ends, far away from the transmission rod (15), of the tension springs (18) are fixedly connected with the wall of the arc-shaped support rods (8) respectively.
7. The mud suction device aiming at the deep well and capable of randomly changing the diameter of the mud suction port according to the claim 1, is characterized in that: the lower extreme fixedly connected with of ring (6) a plurality of evenly distributed's supporting legs (4), it is a plurality of supporting legs (4) are the annular distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020601.4A CN111021526B (en) | 2020-01-09 | 2020-01-09 | Mud suction device capable of randomly changing diameter of mud suction port for deep well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010020601.4A CN111021526B (en) | 2020-01-09 | 2020-01-09 | Mud suction device capable of randomly changing diameter of mud suction port for deep well |
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| CN111021526A CN111021526A (en) | 2020-04-17 |
| CN111021526B true CN111021526B (en) | 2020-12-08 |
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| CN202010020601.4A Active CN111021526B (en) | 2020-01-09 | 2020-01-09 | Mud suction device capable of randomly changing diameter of mud suction port for deep well |
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| CN113341321B (en) * | 2021-05-21 | 2022-12-23 | 国网黑龙江省电力有限公司电力科学研究院 | Battery low temperature detection reducing mechanism |
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| CN2213839Y (en) * | 1994-05-16 | 1995-11-29 | 唐山龙加电子技术开发有限公司 | Protect board type cup leather packer |
| US6457522B1 (en) * | 2000-06-14 | 2002-10-01 | Wood Group Esp, Inc. | Clean water injection system |
| DE10235079A1 (en) * | 2002-07-31 | 2004-02-19 | Carl Freudenberg Kg | cup seal |
| KR100908913B1 (en) * | 2009-03-23 | 2009-07-23 | 최재현 | Non-digging sewerage mending apparatus and its manufacturing method |
| CN204082117U (en) * | 2014-08-29 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of new-type waterpower swab |
| CN105421579A (en) * | 2015-12-19 | 2016-03-23 | 冯振鹏 | Sewage well sludge sand stone cleaning device convenient to clean |
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