CN107261587B - A kind of strainer automatically cleaning dregs filter - Google Patents

A kind of strainer automatically cleaning dregs filter Download PDF

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Publication number
CN107261587B
CN107261587B CN201710676871.9A CN201710676871A CN107261587B CN 107261587 B CN107261587 B CN 107261587B CN 201710676871 A CN201710676871 A CN 201710676871A CN 107261587 B CN107261587 B CN 107261587B
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CN
China
Prior art keywords
valve
mouth
strainer
cylinder body
pump drainage
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.)
Expired - Fee Related
Application number
CN201710676871.9A
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Chinese (zh)
Other versions
CN107261587A (en
Inventor
郭海
井东旭
佟新建
卢森
郑强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Railway Group Co Ltd Traffic Engineering Branch
China Railway Sixth Group Co Ltd
Original Assignee
Railway Group Co Ltd Traffic Engineering Branch
China Railway Sixth Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Railway Group Co Ltd Traffic Engineering Branch, China Railway Sixth Group Co Ltd filed Critical Railway Group Co Ltd Traffic Engineering Branch
Priority to CN201710676871.9A priority Critical patent/CN107261587B/en
Publication of CN107261587A publication Critical patent/CN107261587A/en
Application granted granted Critical
Publication of CN107261587B publication Critical patent/CN107261587B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B01D29/01Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • 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
    • B01D29/60Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/606Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
    • 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
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/66Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/665Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps by using pistons

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

Abstract

The present invention provides a kind of strainer automatically cleaning dregs filters, belong to filter device technical field.The present invention includes cylinder body and piston, and the cylinder side wall is equipped with the net slurry mouth being connected to the cylinder interior, and the net slurry mouth is equipped with the first check valve;Pump drainage mouth is additionally provided on the cylinder body, poly- slag chamber is connected outside the pump drainage mouth, strainer is equipped between the pump drainage mouth and the poly- slag chamber, the poly- slag chamber is equipped with slurry inlet pipe and scum pipe, the slurry inlet pipe is equipped with second one-way valve, and the scum pipe is equipped with the point valve being opened and closed according to piston position;The distance of the pump drainage mouth away from the cylinder ends is less than the distance of the net slurry mouth away from the cylinder ends.Whole process of the present invention carries out in a piston circulation, and the course of work is smooth, effectively prevents filter net jam while greatly improving filter efficiency, greatly reduces maintenance cost.

Description

A kind of strainer automatically cleaning dregs filter
Technical field
The invention belongs to filter device technical fields, are to be related to a kind of strainer automatically cleaning dregs filter more specifically.
Background technique
Currently, with shield machine carry out tunnel construction with high degree of automation, save manpower, speed of application it is fast, once at It can control surface subsidence when hole, weatherproof, excavation, reduce the influence to above ground structure and excavate Shi Buying under water The features such as ringing traffic above-ground, tunnel line is longer, in the biggish situation of buried depth, with shield machine construction more economical rationality.Shield The basic functional principle of structure machine is exactly that the steel component an of cylindrical body excavates soil when pushing ahead along canal axes. Shell, that is, shield of the cylinder component, it plays a part of temporary support to the also unlined Tunnel Section excavated, and bears The pressure of surrounding soil layer, sometimes outside also subject to ground water pressure and by underground water gear.The operations such as excavation, casting, lining cutting exist It is carried out under the shielding of shield.In order to guarantee the stress balance of shield machine, generallys use the modes such as gas balance, mud and water balance and balance soil Pressure.It is the case where some shield machines using mud and water balance often will appear the rock ballast blocking pipeline adulterated in mud, existing Method is periodic replacement mud, but due to constructing in city, mud is nowhere discharged, and transportation cost is high, in addition in some mud Additive price it is high, so, it is uneconomical, not environmentally for carrying out abandonment processing to used mud.
And mud particle particle diameter distribution used in shield machine is wider, and there are a large amount of micelles, viscosity is very big, existing It is some with filter cloth or filter the filtering pressure equipment not only inefficiency of box, be also easy to filter out the fine grained in mud, waste Material;And other filter residuepumps, when filtering this mud, strainer is easy to block, and needs frequent cleaning replacement, maintenance cost Height, efficiency are extremely low.
Summary of the invention
The purpose of the present invention is to provide a kind of strainer automatically cleaning dregs filters, to solve filter residue existing in the prior art Strainer is easy choked technique problem in equipment.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of strainer automatically cleaning dregs filter is provided, including Cylinder body and piston, the cylinder side wall are equipped with the net slurry mouth being connected to the cylinder interior, and it is single that the net slurry mouth is equipped with first To valve;It is additionally provided with pump drainage mouth on the cylinder body, poly- slag chamber is connected outside the pump drainage mouth, between the pump drainage mouth and the poly- slag chamber Equipped with strainer, the poly- slag chamber is equipped with slurry inlet pipe and scum pipe, and the slurry inlet pipe is equipped with second one-way valve, the row Slag pipe is equipped with the point valve being opened and closed according to piston position;The distance of the pump drainage mouth away from the cylinder ends is less than the net slurry Distance of the mouth away from the cylinder ends.
It further, further include for detecting the piston position in a kind of strainer automatically cleaning dregs filter above-mentioned Position sensor and controller, the position sensor output end are electrically connected with the controller input terminal, and the point valve is Electrically-controlled valve, the controller output end are electrically connected with the point valve input terminal.
Further, it in a kind of strainer automatically cleaning dregs filter above-mentioned, is set between the pump drainage mouth and the poly- slag chamber There is filter screen groove, the strainer is fixed in the filter screen groove.
Further, in a kind of strainer automatically cleaning dregs filter above-mentioned, the pump drainage mouth is located at the end of the cylinder body, Cylinder body main shaft direction is arranged the scum pipe in parallel.
Further, in a kind of strainer automatically cleaning dregs filter above-mentioned, the cylinder body both ends are equipped with the net slurry mouth With the pump drainage mouth, the piston is bidirectional ram.
Further, in a kind of strainer automatically cleaning dregs filter above-mentioned, the piston length is greater than the net slurry mouth Diameter.
It further, further include for controlling the point valve opening and closing in a kind of strainer automatically cleaning dregs filter above-mentioned Point valve control-rod, point valve control-rod one end connect with the piston, and the other end connects opening in the point valve Make and break is closed.
Further, in a kind of strainer automatically cleaning dregs filter above-mentioned, the point valve includes inlet, valve chamber and institute Open-close on-off is stated, the open-close on-off includes being used to close the valve ball of the inlet in valve chamber and for valve described in clamping Ball simultaneously makes the valve ball close the fastener of the inlet, and the middle part of the fastener is side walls hinged with the point valve, described Fastener one end is equipped with the valve ball claw for valve ball described in clamping, and the fastener other end is equipped with for controlling with the point valve The control-rod claw of bar clamping, the point valve control boom end are equipped with the bulb for shoring the control-rod claw.
A kind of beneficial effect of strainer automatically cleaning dregs filter provided by the invention is: compared with prior art, this hair It is bright that net slurry is filtered out from slurry by the piston motion of reciprocation type, further through a part of net slurry retained in cylinder body to strainer into Row rinses, and since cylinder interior pressure increases when piston blocks net slurry mouth, point valve is opened moment, and net slurry flow velocity at pump drainage mouth increases Greatly, strong flushing action is formed to strainer, the rock ballast being stuck on strainer can be rushed out, be prevented filter net jam;Whole process It being carried out in a piston circulation, the course of work is smooth, filter net jam is effectively prevented while greatly improving filter efficiency, Greatly reduce maintenance cost.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these Attached drawing obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of strainer automatically cleaning dregs filter provided in an embodiment of the present invention;
Fig. 2 is a kind of external structure schematic diagram of strainer automatically cleaning dregs filter provided in an embodiment of the present invention;
Fig. 3 is a kind of a kind of use state of the point valve of strainer automatically cleaning dregs filter provided in an embodiment of the present invention The schematic diagram of the section structure;
Fig. 4 is a kind of another use state of the point valve of strainer automatically cleaning dregs filter provided in an embodiment of the present invention The schematic diagram of the section structure.
Wherein, each appended drawing reference in figure:
1 cylinder body;2 pistons;21 position sensors;22 controllers;3 net slurry mouths;31 first check valves;4 pump drainage mouths;5 strainers; 51 filter screen grooves;6 poly- slag chambers;7 slurry inlet pipes;71 second one-way valves;8 scum pipes;9 point valves;91 point valve control-rods;92 expand Portion;93 valve chambers;94 valve balls;95 fasteners;96 valve ball claws;97 control-rod claws.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or indirectly on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, Unless otherwise specifically defined.
Referring to Fig. 1, existing be illustrated a kind of strainer automatically cleaning dregs filter provided by the invention.The strainer is from clear Clean dregs filter, including cylinder body 1 and piston 2,1 side wall of cylinder body are equipped with and the net slurry mouth 3 that is connected to inside the cylinder body 1, institute Net slurry mouth 3 is stated equipped with the first check valve 31;It is additionally provided with pump drainage mouth 4 on the cylinder body 1, connects poly- slag chamber outside the pump drainage mouth 4 6, strainer 5 is equipped between the pump drainage mouth 4 and the poly- slag chamber 6, the poly- slag chamber 6 is equipped with slurry inlet pipe 7 and scum pipe 8, The slurry inlet pipe 7 is equipped with second one-way valve 71, and the scum pipe 8 is equipped with the point valve 9 being opened and closed according to 2 position of piston; Distance of the pump drainage mouth 4 away from 1 end of cylinder body is less than distance of the net slurry mouth 3 away from 1 end of cylinder body.
In use, piston 2 moves back, negative pressure is formed in cylinder body 1, the first check valve 31 and point valve 9 are closed at this time, slurry (i.e. with the mud of rock ballast) is entered by slurry inlet pipe 7, and second one-way valve 71 is opened at this time, the poly- slag chamber 6 of slurry inflow, in slurry Net slurry (being free of the mud of bulky grain rock ballast) is entered in cylinder body 1 by the strainer 5 on pump drainage mouth 4, and bulky grain rock ballast is hindered Gear is in poly- slag chamber 6;Piston 2 moves forward later, and positive pressure is formed in cylinder body 1, and the first check valve 31 is opened at this time, second one-way valve 71 It closes, net slurry is sent out by net slurry mouth 3, after piston 2 advances and blocks net slurry mouth 3, the interior also a certain amount of net slurry of cylinder body 1, this When point valve 9 open, net slurry returns to poly- slag chamber 6 and bulky grain rock ballast is pushed to enter 8 row of scum pipe by pump drainage mouth 4 and strainer 5 Out;Piston 2 is moved back into subsequent cycle later.
Strainer automatically cleaning dregs filter provided by the invention, compared with prior art, by the piston motion of reciprocation type from Net slurry is filtered out in slurry, strainer 5 is rinsed further through a part of net slurry retained in cylinder body 1, since piston 2 is blocked only Pressure increases in cylinder body 1 when starching mouth 3, and point valve 9 is opened moment, and net slurry flow velocity at pump drainage mouth 4 increases, and is formed by force to strainer 5 The rock ballast being stuck on strainer 5 can be rushed out, prevent filter net jam by strong flushing action;Whole process is recycled in a piston Interior progress, the course of work is smooth, effectively prevents filter net jam while greatly improving filter efficiency, greatly reduces maintenance Cost.
Further, referring to Fig. 1, as a kind of a kind of specific reality of strainer automatically cleaning dregs filter provided by the invention Mode is applied, further includes position sensor 21 and controller 22 for detecting 2 position of piston, the position sensor 21 is defeated Outlet is electrically connected with 22 input terminal of controller, and the point valve 9 is electrically-controlled valve, 22 output end of controller and institute's rheme Set the electrical connection of 9 input terminal of valve.Point valve 9 is controlled by the way of automatically controlled can make whole device work more stable, and structure is also more Add and simplify, there is very strong applicability.Position sensor 21 can be set on the piston 2, can also be located on cylinder body 1, can be with It is arranged in net slurry mouth 3.Position sensor 21 can be pressure sensor, and the position of piston 2 is judged by pressure change, can also be with It is displacement meter, by the position of mobile Distance Judgment piston 2, can also be that other are directly used in the sensor of detection position.
Further, referring to Fig. 1, as a kind of a kind of specific reality of strainer automatically cleaning dregs filter provided by the invention Mode is applied, filter screen groove 51 is equipped between the pump drainage mouth 4 and the poly- slag chamber 6, the strainer 5 is fixed on the filter screen groove 51 It is interior.Setting filter screen groove 51 can make strainer 5 connect more firm, prevent strainer 5 from loosening, while also can be convenient for strainer 5 Dismounting and change.Strainer 5 and the connection of filter screen groove 51 are preferably clamped, the replacement easy to disassemble of the form of clamping, are conducive to improve with more Efficiency is changed, equipment downtime is shortened.
Further, referring to Fig. 1, as a kind of a kind of specific reality of strainer automatically cleaning dregs filter provided by the invention Mode is applied, the pump drainage mouth 4 is located at the end of the cylinder body 1, and the parallel 1 main shaft direction of cylinder body of the scum pipe 8 is arranged. Such structure is sent to scum pipe 8 along straight line convenient for rock ballast, can prevent rock ballast from assembling, and blocks scum pipe 8.
Further, as a kind of a kind of specific embodiment of strainer automatically cleaning dregs filter provided by the invention, institute It states 1 both ends of cylinder body and is equipped with the net slurry mouth 3 and the pump drainage mouth 4, the piston 2 is bidirectional ram.I.e. whole device is similar Cylinder body 1 is divided to for two chambers by two-chamber plunger pump, piston 2.Such structure is equivalent to a set of power-equipment and drives two strainers certainly Dregs filter is cleaned, is conducive to save power, improve efficiency.
Further, referring to Fig. 1, as a kind of a kind of specific reality of strainer automatically cleaning dregs filter provided by the invention Mode is applied, 2 length of piston is greater than the diameter of the net slurry mouth 3, to prevent piston 2 from returning across net slurry mouth 3 after net slurry mouth 3 Slurry.
Further, referring to Fig. 2, as a kind of a kind of specific reality of strainer automatically cleaning dregs filter provided by the invention Apply mode, further include the point valve control-rod 91 being opened and closed for controlling the point valve 9, described 91 one end of point valve control-rod with The piston 2 connects, and the other end connects the open-close on-off in the point valve 9.The control device of this machinery controls more Accurately, the control that can be achieved with point valve 9 by external power supply is not needed, safely and effectively.
Further, also referring to Fig. 3 and Fig. 4, as a kind of strainer automatically cleaning dregs filter provided by the invention A kind of specific embodiment, the point valve 9 include inlet, valve chamber 93 and the open-close on-off, and the open-close on-off includes For closing the valve ball 94 of the inlet and for valve ball 94 described in clamping and closing the valve ball 94 in valve chamber 93 The fastener 95 of the inlet, the middle part of the fastener 95 is side walls hinged with the point valve 9, and described 95 one end of fastener is equipped with For the valve ball claw 96 of valve ball 94 described in clamping, 95 other end of fastener is equipped with for blocking with the point valve control-rod 91 The control-rod claw 97 connect, 91 end of point valve control-rod are equipped with the bulb for shoring the control-rod claw 97 92.In use, point valve control-rod 91 is moved with piston 2, when piston 2 had previously crossed over net slurry mouth 3 or piston 2 crosses over net slurry mouth 3 The bulb 92 of point valve control-rod 91 is deviate from from the control-rod claw 97 of fastener 95 just afterwards, under pressure at this time, Valve ball 94 opens the valve ball claw 96 on fastener 95, and control-rod claw 97 continues thinner portion on stuck position valve control-rod 91 Point, point valve 9 is opened;Then, 2 successive pulls are filled in, across after net slurry mouth 3, the bulb 92 of point valve control-rod 91 again will control Bar claw 97 processed struts, and valve ball claw 96 holds the inlet that valve ball 94 makes valve ball 94 block point valve 9 tightly, and point valve 9 is closed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (6)

1. a kind of strainer automatically cleaning dregs filter, it is characterised in that: including cylinder body (1) and piston (2), cylinder body (1) side wall Equipped with the net slurry mouth (3) being connected to the cylinder body (1) inside, the net slurry mouth (3) is equipped with the first check valve (31);The cylinder It is additionally provided on body (1) pump drainage mouth (4), the pump drainage mouth (4) connects poly- slag chamber (6), the pump drainage mouth (4) and the poly- slag chamber outside (6) strainer (5) are equipped between, the poly- slag chamber (6) is equipped with slurry inlet pipe (7) and scum pipe (8), the slurry inlet pipe (7) It is equipped with second one-way valve (71), the scum pipe (8) is equipped with the point valve (9) being opened and closed according to piston (2) position;The pumping It arranges the distance of mouth (4) away from the cylinder body (1) end and is less than the distance of the net slurry mouth (3) away from the cylinder body (1) end;Further include For controlling the point valve control-rod (91) of the point valve (9) opening and closing, described point valve control-rod (91) one end and the work (2) connection is filled in, the other end connects the open-close on-off on the point valve (9);The point valve (9) includes inlet, valve chamber (93) and the open-close on-off, the open-close on-off include in valve chamber (93) for closing the valve ball (94) of the inlet With for valve ball (94) described in clamping and the valve ball (94) is made to close the fastener (95) of the inlet, the fastener (95) Middle part is side walls hinged with the point valve (9), and described fastener (95) one end is equipped with the valve ball for valve ball (94) described in clamping Claw (96), fastener (95) other end are equipped with the control-rod claw for being clamped with the point valve control-rod (91) (97), point valve control-rod (91) end is equipped with the bulb (92) for shoring the control-rod claw (97).
2. a kind of strainer automatically cleaning dregs filter as described in claim 1, it is characterised in that: further include for detecting the work Fill in the position sensor (21) and controller (22) of (2) position, position sensor (21) output end and the controller (22) input terminal is electrically connected, and the point valve (9) is electrically-controlled valve, and controller (22) output end and the point valve (9) are defeated Enter end electrical connection.
3. a kind of strainer automatically cleaning dregs filter as described in claim 1, it is characterised in that: the pump drainage mouth (4) with it is described Filter screen groove (51) are equipped between poly- slag chamber (6), the strainer (5) is fixed in the filter screen groove (51).
4. a kind of strainer automatically cleaning dregs filter as described in claim 1, it is characterised in that: the pump drainage mouth (4) is located at institute State the end of cylinder body (1), parallel cylinder body (1) the main shaft direction setting of the scum pipe (8).
5. a kind of strainer automatically cleaning dregs filter as described in claim 1, it is characterised in that: cylinder body (1) both ends are all provided with There are the net slurry mouth (3) and the pump drainage mouth (4), the piston (2) is bidirectional ram.
6. a kind of strainer automatically cleaning dregs filter as described in claim 1, it is characterised in that: piston (2) length is greater than The diameter of the net slurry mouth (3).
CN201710676871.9A 2017-08-09 2017-08-09 A kind of strainer automatically cleaning dregs filter Expired - Fee Related CN107261587B (en)

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CN107261587B true CN107261587B (en) 2019-05-14

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CN108946842B (en) * 2018-08-07 2021-04-09 上海润源水务科技有限公司 Water purifying device
CN109999544A (en) * 2019-04-15 2019-07-12 江苏钲清环保科技有限公司 A kind of sewage disposal system
CN111001204A (en) * 2019-12-10 2020-04-14 广州市欧树环保科技有限公司 High-efficient type filter convenient to it is clean
CN111298495A (en) * 2020-02-28 2020-06-19 涵颉化学技术(上海)有限公司 A filter vat for producing anti-oxidant
CN112121558B (en) * 2020-09-30 2021-12-14 四川凤生纸业科技股份有限公司 Pulping waste gas recovery method and system
CN112191005A (en) * 2020-10-19 2021-01-08 高俊亭 Underground drilling fluid filtering device
CN112892059B (en) * 2021-01-11 2022-06-24 江苏乐圣环保装备制造有限公司 Emergency safety treatment equipment for drinking water and treatment method thereof
CN113769457B (en) * 2021-11-11 2022-01-25 山东能晶净化科技有限公司 Waste water recovery device for environmental protection
CN115400597B (en) * 2022-09-30 2023-09-22 江苏诺莱智慧水务装备有限公司 Ultrafiltration membrane filter equipment is used in drinking water treatment

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CN201921586U (en) * 2011-01-24 2011-08-10 山东江山高分子材料有限公司 Device capable of separating catalyst particles from catalytic cracking oil slurry
CN202700219U (en) * 2012-08-15 2013-01-30 罗成 Online dirt cleaning filter capable of filtering rag strip impurities in crude oil
CN202860241U (en) * 2012-09-19 2013-04-10 四川聚友生态农业科技有限公司 Filtering tank capable of being cleaned and easily replacing filter material
WO2016086391A1 (en) * 2014-12-04 2016-06-09 苏俊 Air backflushing self-cleaning filter
CN204745883U (en) * 2015-04-21 2015-11-11 浙江得威德环保科技有限公司 Filter material belt cleaning device is mixed to multilayer

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