CN111905441A - Sludge extraction equipment capable of quickly collecting and removing blocking sundries - Google Patents

Sludge extraction equipment capable of quickly collecting and removing blocking sundries Download PDF

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Publication number
CN111905441A
CN111905441A CN202010627982.2A CN202010627982A CN111905441A CN 111905441 A CN111905441 A CN 111905441A CN 202010627982 A CN202010627982 A CN 202010627982A CN 111905441 A CN111905441 A CN 111905441A
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China
Prior art keywords
sludge
sludge pipe
block
baffle
coil
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Withdrawn
Application number
CN202010627982.2A
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Chinese (zh)
Inventor
吴楚凤
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Individual
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Individual
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Priority to CN202010627982.2A priority Critical patent/CN111905441A/en
Publication of CN111905441A publication Critical patent/CN111905441A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering 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
    • B01D35/02Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/56Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/96Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering 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
    • B01D35/16Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to the technical field of sludge extraction equipment, and discloses sludge extraction equipment capable of quickly collecting and removing blocking sundries, which comprises a sludge pipe, wherein a first magnetic block is fixedly connected to the outer side end of a baffle, a first coil corresponding to the first magnetic block is arranged inside the sludge pipe, a baffle is arranged on the outer side of the lower part of a control rod, a U-shaped block is connected to the outer side of the control rod, a second magnetic block is arranged at the upper end of the U-shaped block, a metal ball corresponding to a metal sheet is arranged on the upper part of the right side of the baffle, and a second coil is arranged inside the sludge pipe and on the outer side of the upper part of the control rod. The magnetic field generated by the second coil drives the U-shaped block to reset rapidly by pushing the second magnetic block. When crossing the upset of movable filter board one hundred eighty degrees, the baffle stretches out and fixes movable filter board under the effect of first spring, and this structure has solved current sludge extraction device work efficiency low, debris easily pile up the jam and the problem that workman working strength is high.

Description

Sludge extraction equipment capable of quickly collecting and removing blocking sundries
Technical Field
The invention relates to the technical field of sludge extraction equipment, in particular to sludge extraction equipment capable of quickly collecting and removing blocking impurities.
Background
The sludge treatment is the processing process of concentrating, regulating, dehydrating, stabilizing, drying or incinerating the sludge. There are a number of methods available for treating oily sludge. Chemical and physical methods such as: incineration, oxychlorination, ozone oxidation and combustion, biological treatment methods such as: bioremediation, traditional composting, and the like. Now, with the development of technology, the low-temperature cold treatment and bioremediation of the oily sludge become two effective treatment ways. With the enhancement of environmental protection and the further understanding of people on the limitations of the existing sludge treatment technology, all countries in the world are investing in important research and development of new technologies to strive for more economical and reasonable sludge treatment schemes. Thereby improving the living environment of people.
The sludge treatment is generally carried out in polluted river channels, paper making factories and other environmental areas, the prior sludge treatment firstly needs to pump out sewage and then carry out solid-liquid separation on the sewage, however, in the process of pumping out the sewage, a filter screen is needed to separate the sludge from the sewage, the filter screen is easily blocked by impurities in the sludge in the process, the conventional mechanism can only continuously stir the impurities, so that the pumping-out of the sludge is ensured, but the efficiency of the pumping-out of the sludge is reduced along with the accumulation of the impurities; in addition, the filter screen is opened and replaced, so that the work is complicated and the labor intensity is high, and in order to solve the problem, the sludge extraction equipment capable of quickly collecting and removing the blocking impurities is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the sludge extraction equipment capable of quickly collecting and removing the blocking sundries, which has the advantages of high working efficiency, sectional centralized sundries cleaning and low working strength, and solves the problems of low working efficiency, easy sundries accumulation and blocking and high working strength of workers of the conventional sludge extraction device.
(II) technical scheme
In order to achieve the purposes of high working efficiency, sectional centralized sundries cleaning and low working strength, the invention provides the following technical scheme: a sludge extraction device capable of quickly collecting and removing blocking sundries comprises a sludge pipe, a chute is formed inside the left side of the sludge pipe, guide grooves communicated with each other are formed inside the sludge pipe and on the upper portion of the chute, a rotating shaft is rotatably connected inside the sludge pipe and on the inner side of the guide grooves, a movable filter plate is fixedly connected between the rotating shafts, a baffle is slidably connected to the upper portion of the rotating shaft and inside the sludge pipe, a first magnetic block is fixedly connected to the outer side end of the baffle, a first spring is fixedly connected to the outer side end of the first magnetic block, a first coil corresponding to the first magnetic block is arranged inside the sludge pipe, a suction pipe is fixedly connected to the inside of the sludge pipe and above the right baffle, a sliding block is slidably connected to the inside of the sludge pipe and inside the chute, a second spring is fixedly connected between the upper portion of the sliding block and the outer side wall of the chute, a control rod is slidably connected to the inside, the lower part outside of control lever is provided with the baffle, the outside sliding connection of control lever has U type piece, the upper end of U type piece is provided with the second magnetic path, the lower part left side of U type piece is provided with the sheetmetal, the upper portion of baffle and be provided with the third spring in U type piece, the inside of sludge pipe and at the left side sliding connection of U type piece have the dog, the right side upper portion of dog is provided with the metal ball that corresponds with the sheetmetal, fixedly connected with fourth spring between the left end of dog and the sludge pipe, the inside of sludge pipe and be provided with the second coil in the upper portion outside of control lever, inside and the movable filter of sludge pipe be directly over fixedly connected with fixed filter.
Preferably, a rolling bearing is arranged between the outer side of the rotating shaft and the sludge pipe, so that the movable filter plate and the rotating shaft are ensured to rotate on the sludge pipe.
Preferably, the magnetic field generated by the first coil is opposite to the magnetic pole of the first magnetic block on the opposite surface, so that the magnetic field generated by the first coil is ensured to drive the baffle plate to be separated from the movable filter plate by pulling the first magnetic block.
Preferably, the first spring, the first coil and the baffle are symmetrical about the movable filter plate, so that the baffles at two ends can synchronously and stably fix the movable filter plate.
Preferably, the inside of the sludge pipe is provided with a sliding chute corresponding to the stop block, so that the stop block is ensured to be retracted in the sludge pipe.
Preferably, the left side of the U-shaped block is provided with an inclined plane up and down, and the inclined plane corresponds to the arc arranged at the right end of the stop block, so that the U-shaped block can be extruded to move up and down through the extrusion stop block.
Preferably, the magnetic pole of the magnetic field generated by the second coil is the same as that of the second magnetic block on the opposite surface, so that the magnetic field generated by the second coil is ensured to drive the U-shaped block to reset rapidly by pushing the second magnetic block.
(III) advantageous effects
Compared with the prior art, the invention provides the sludge extraction equipment capable of quickly collecting and removing the blocking sundries, which has the following beneficial effects:
1. this can collect fast and clear away mud equipment of drawing of jam debris blocks up the filter plate through mud debris, and the pressure of filter plate downside is great, and mud in the filter plate promotes the slider rebound, and the gaseous of slider extrusion control lever downside is promoted the control lever rebound by the extruded gas, and the baffle extrusion third spring of control lever lower part promotes U type piece and holds power. Promote U type piece extrusion dog and remove the top when the third spring reaches certain pressure, under the effect of gravity, the metal ball on the dog is connected with the sheetmetal, and first coil and second coil are linked together, and the magnetic field that first coil produced is opposite with the magnetic pole of the first magnetic path of opposite face to guarantee that the magnetic field that first coil produced drives the baffle through the first magnetic path of pulling and breaks away from movable filter, movable filter overturns under the pressure of sewage. This arrangement achieves the effect of the movable filter plate turning over in preparation for further cleaning.
2. According to the sludge extraction equipment capable of quickly collecting and removing the blocking impurities, the magnetic field generated by the second coil drives the U-shaped block to quickly reset by pushing the second magnetic block. Because the movable filter plate extrudes the baffle, when the movable filter plate overturns by one hundred eighty degrees, the baffle stretches out under the action of the first spring and fixes the movable filter plate, and the structure can clamp sundries between the movable filter plate and the fixed filter plate, thereby ensuring that the sundries accumulated in the sludge pipe are efficiently cleaned through the pumping pipe, and solving the problems of low working efficiency, easy accumulation of the sundries, blockage and high working strength of workers of the existing sludge extracting device.
3. This can collect fast and clear away mud extraction equipment that blocks up debris not only can carry out whole collection with the accumulational debris in the sludge pipe together through movable filter and fixed filter, and movable filter and fixed filter have reached the effect of double-deck filtration debris to guarantee that the mud of taking out does not have debris in the sludge pipe, thereby further guarantee subsequent mud and retrieve.
Drawings
FIG. 1 is a sectional view showing the front structure of a sludge pipe according to the present invention;
FIG. 2 is an enlarged view of the structure of FIG. 1 at A according to the present invention;
FIG. 3 is an enlarged view of the structure of FIG. 2 at B according to the present invention;
FIG. 4 is a cross-sectional view of the structure of FIG. 1 at C-C in accordance with the present invention;
fig. 5 is a front sectional view of a structure related to a control lever of the present invention.
In the figure: 1 sludge pipe, 101 chutes, 102 guide grooves, 2 rotating shafts, 3 movable filter plates, 4 baffle plates, 401 first magnetic blocks, 5 first springs, 6 first coils, 7 pumping pipes, 8 sliding blocks, 9 second springs, 10 control rods, 1001 baffle plates, 11U-shaped blocks, 1101 second magnetic blocks, 1102 metal sheets, 12 third springs, 13 baffle plates, 1301 metal balls, 14 fourth springs, 15 second coils and 16 fixed filter plates.
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.
Please refer to fig. 1-5, a sludge extraction device capable of rapidly collecting and removing blocking impurities, comprising a sludge pipe 1, a chute 101 is arranged inside the left side of the sludge pipe 1, a guide groove 102 communicated with the chute 101 is arranged inside the sludge pipe 1 and on the upper part of the chute 101, a rotating shaft 2 is rotatably connected inside the sludge pipe 1 and on the inner side of the guide groove 102, a movable filter plate 3 is fixedly connected between the rotating shaft 2, a rolling bearing is arranged between the outer side of the rotating shaft 2 and the sludge pipe 1, thereby ensuring that the movable filter plate 3 and the rotating shaft 2 rotate on the sludge pipe 1. The upper portion of pivot 2 and equal sliding connection have baffle 4 in sludge pipe 1, the equal first magnetic path 401 of fixedly connected with of outside end of baffle 4, the equal first spring 5 of fixedly connected with of outside end of first magnetic path 401, the inside of sludge pipe 1 is provided with the first coil 6 that corresponds with first magnetic path 401, first spring 5, first coil 6 and baffle 4 are symmetrical about movable filter plate 3, thereby guarantee that baffle 4 at both ends is synchronous to carry out stable fixed to movable filter plate 3. The magnetic field generated by the first coil 6 is opposite to the magnetic pole of the first magnetic block 401 opposite to the magnetic pole, so that the magnetic field generated by the first coil 6 is ensured to drive the baffle 4 to be separated from the movable filter plate 3 by pulling the first magnetic block 401.
A pipe drawing 7 is fixedly connected inside the sludge pipe 1 and above the right baffle 4, a slide block 8 is connected inside the sludge pipe 1 and in the sliding groove 101 in a sliding manner, a second spring 9 is fixedly connected between the upper part of the slide block 8 and the outer side wall of the sliding groove 101, a control rod 10 is connected inside the sludge pipe 1 and in the guide groove 102 in a sliding manner, a baffle 1001 is arranged outside the lower part of the control rod 10, a U-shaped block 11 is connected outside the control rod 10 in a sliding manner, a second magnetic block 1101 is arranged at the upper end of the U-shaped block 11, a metal sheet 1102 is arranged on the left side of the lower part of the U-shaped block 11, a third spring 12 is arranged on the upper part of the baffle 1001 and in the U-shaped block 11, a stopper 13 is connected inside the sludge pipe 1 and on the left side of the U-shaped block 11 in a sliding manner, a metal ball 1301 corresponding to the metal sheet 1102 is arranged on, thereby ensuring that the stop block 13 is stored in the sludge pipe 1. An inclined plane is formed at the left side of the U-shaped block 11 up and down, and the inclined plane corresponds to the arc formed at the right end of the stop block 13, so that the U-shaped block 11 can be extruded to move up and down through the stop block 13. Fixedly connected with fourth spring 14 between the left end of dog 13 and the sludge pipe 1, the inside of sludge pipe 1 and be provided with second coil 15 in the upper portion outside of control lever 10, the magnetic field magnetic pole that second coil 15 produced is the same with the second magnetic path 1101 of opposite face to guarantee that the magnetic field that second coil 15 produced drives U type piece 11 through promoting second magnetic path 1101 and reset fast. A fixed filter plate 16 is fixedly connected inside the sludge pipe 1 and right above the movable filter plate 3.
The working principle is as follows: this can collect fast and clear away mud draw-out equipment that blocks up debris, at the during operation, debris through in the mud are piled up on movable filter 3, when debris on filter plate 3 pile up certain degree, the filter plate 3 is blocked up to mud debris, consequently, the mud velocity of flow of filter plate 3 downside is great, simultaneously, the pressure of filter plate 3 downside is great, mud in the filter plate 3 promotes slider 8 rebound, the gas of slider 8 extrusion control lever 10 downside, by the gaseous promotion control lever 10 rebound of extruded, baffle extrusion third spring 12 when the control lever 10 lower part promotes U type piece 11 and holds power. When the third spring 12 reaches a certain pressure, the U-shaped block 11 is pushed to extrude the stop block 13 to move to the upper side, at the moment, under the action of gravity, the metal ball 1301 on the stop block 13 is connected with the metal sheet 1102, the first coil 6 and the second coil 15 are communicated, the magnetic field generated by the first coil 6 is opposite to the magnetic pole of the first magnetic block 401 on the opposite surface, so that the magnetic field generated by the first coil 6 is ensured to drive the baffle 4 to be separated from the movable filter plate 3 by pulling the first magnetic block 401, and the movable filter plate 3 overturns under the pressure of sewage. This arrangement has the effect of turning the movable filter plate 3 over in preparation for further cleaning.
The magnetic field generated by the second coil 15 drives the U-shaped block 11 to reset rapidly by pushing the second magnetic block 1101. But because the movable filter plate 3 extrudes the baffle 4, so until the movable filter plate 3 overturns one hundred eighty degrees, the baffle 4 stretches out under the effect of the first spring 5 and fixes the movable filter plate 3, and the structure achieves the purpose of clamping sundries between the movable filter plate 3 and the fixed filter plate 16, thereby ensuring that the sundries accumulated in the sludge pipe 1 are efficiently cleaned through the pumping pipe 7, and solving the problems of low working efficiency, easy accumulation of the sundries, blockage and high working strength of workers of the existing sludge extraction device.
Not only can wholly collect the debris that pile up in the sludge pipe 1 together through movable filter 3 and fixed filter 16, and movable filter 3 and fixed filter 16 have reached the effect of double-deck filtration debris to guarantee that the mud of taking out does not have debris in the sludge pipe 1, thereby further guarantee subsequent mud and retrieve.
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 collect fast and clear away mud equipment of drawing of jam debris, includes sludge pipe (1), its characterized in that: a sliding groove (101) is formed in the left side of the sludge pipe (1), a guide groove (102) communicated with the sliding groove (101) is formed in the sludge pipe (1) and in the upper portion of the sliding groove (101), a rotating shaft (2) is rotatably connected in the sludge pipe (1) and in the guide groove (102), a movable filter plate (3) is fixedly connected between the rotating shafts (2), a baffle plate (4) is slidably connected to the upper portion of the rotating shaft (2) in the sludge pipe (1), a first magnetic block (401) is fixedly connected to the outer side end of the baffle plate (4), a first spring (5) is fixedly connected to the outer side end of the first magnetic block (401), a first coil (6) corresponding to the first magnetic block (401) is arranged in the sludge pipe (1), a pumping pipe (7) is fixedly connected to the inner portion of the sludge pipe (1) and above the right baffle plate (4), a sliding block (8) is slidably connected to the inner portion of the sludge pipe (1) in the sliding groove (101, a second spring (9) is fixedly connected between the upper part of the sliding block (8) and the outer side wall of the sliding chute (101), a control rod (10) is connected in the sludge pipe (1) in a sliding manner in the guide groove (102), a baffle (1001) is arranged on the outer side of the lower part of the control rod (10), a U-shaped block (11) is connected on the outer side of the control rod (10) in a sliding manner, a second magnetic block (1101) is arranged at the upper end of the U-shaped block (11), a metal sheet (1102) is arranged on the left side of the lower part of the U-shaped block (11), a third spring (12) is arranged on the upper part of the baffle (1001) and in the U-shaped block (11), a stop block (13) is connected in the sludge pipe (1) in a sliding manner on the left side of the U-shaped block (11), a metal ball (1301) corresponding to the metal sheet (1102) is arranged on the upper part of the right side of the stop block, a second coil (15) is arranged inside the sludge pipe (1) and outside the upper part of the control rod (10), and a fixed filter plate (16) is fixedly connected inside the sludge pipe (1) and right above the movable filter plate (3).
2. The sludge extraction apparatus capable of rapidly collecting and removing clogging debris according to claim 1, wherein: and a rolling bearing is arranged between the outer side of the rotating shaft (2) and the sludge pipe (1).
3. The sludge extraction apparatus capable of rapidly collecting and removing clogging debris according to claim 1, wherein: the magnetic field generated by the first coil (6) is opposite to the magnetic pole of the first magnetic block (401) on the opposite surface.
4. The sludge extraction apparatus capable of rapidly collecting and removing clogging debris according to claim 1, wherein: the first spring (5), the first coil (6) and the baffle (4) are symmetrical with respect to the movable filter plate (3).
5. The sludge extraction apparatus capable of rapidly collecting and removing clogging debris according to claim 1, wherein: the inside of the sludge pipe (1) is provided with a sliding chute corresponding to the stop block (13).
6. The sludge extraction apparatus capable of rapidly collecting and removing clogging debris according to claim 1, wherein: the left side of the U-shaped block (11) is provided with an inclined plane up and down, and the inclined plane corresponds to the arc arranged at the right end of the stop block (13).
7. The sludge extraction apparatus capable of rapidly collecting and removing clogging debris according to claim 1, wherein: the magnetic pole of the magnetic field generated by the second coil (15) is the same as that of the second magnetic block (1101) on the opposite surface.
CN202010627982.2A 2020-07-01 2020-07-01 Sludge extraction equipment capable of quickly collecting and removing blocking sundries Withdrawn CN111905441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010627982.2A CN111905441A (en) 2020-07-01 2020-07-01 Sludge extraction equipment capable of quickly collecting and removing blocking sundries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010627982.2A CN111905441A (en) 2020-07-01 2020-07-01 Sludge extraction equipment capable of quickly collecting and removing blocking sundries

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011107264A1 (en) * 2010-03-04 2011-09-09 Hydac Filtertechnik Gmbh Filter device
CN106345169A (en) * 2015-07-14 2017-01-25 尼普顿-班森有限责任公司 Strainer and strainer control system
CN206229014U (en) * 2016-12-07 2017-06-09 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 A kind of oil-field flooding backpulsing filters dirt separator
CN206995988U (en) * 2017-06-28 2018-02-13 王建军 A kind of water pipeline water filter
CN108055939A (en) * 2017-12-29 2018-05-22 重庆市长寿区海浪莲藕种植专业合作社 Lotus rhizome planting unit
CN108067022A (en) * 2017-12-07 2018-05-25 浙江海洋大学 Filter device and method may be reversed in a kind of tilting
CN207478116U (en) * 2017-10-29 2018-06-12 吴钧辉 A kind of water conservancy automatic pollution discharge pipeline
CN208465296U (en) * 2018-04-27 2019-02-05 赵雪慧 A kind of environment protection sewage filter plant for cotton mill
CN110549103A (en) * 2019-09-19 2019-12-10 天台云层自动化科技有限公司 Water conservancy construction plugging cover dismounting device
CN210434092U (en) * 2019-05-13 2020-05-01 江西赣清环保设备有限公司 Sewage treatment device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011107264A1 (en) * 2010-03-04 2011-09-09 Hydac Filtertechnik Gmbh Filter device
CN106345169A (en) * 2015-07-14 2017-01-25 尼普顿-班森有限责任公司 Strainer and strainer control system
CN206229014U (en) * 2016-12-07 2017-06-09 中国石油化工股份有限公司胜利油田分公司孤岛采油厂 A kind of oil-field flooding backpulsing filters dirt separator
CN206995988U (en) * 2017-06-28 2018-02-13 王建军 A kind of water pipeline water filter
CN207478116U (en) * 2017-10-29 2018-06-12 吴钧辉 A kind of water conservancy automatic pollution discharge pipeline
CN108067022A (en) * 2017-12-07 2018-05-25 浙江海洋大学 Filter device and method may be reversed in a kind of tilting
CN108055939A (en) * 2017-12-29 2018-05-22 重庆市长寿区海浪莲藕种植专业合作社 Lotus rhizome planting unit
CN208465296U (en) * 2018-04-27 2019-02-05 赵雪慧 A kind of environment protection sewage filter plant for cotton mill
CN210434092U (en) * 2019-05-13 2020-05-01 江西赣清环保设备有限公司 Sewage treatment device
CN110549103A (en) * 2019-09-19 2019-12-10 天台云层自动化科技有限公司 Water conservancy construction plugging cover dismounting device

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