CN107899286A - A kind of sewage disposal vibration filtering system - Google Patents

A kind of sewage disposal vibration filtering system Download PDF

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Publication number
CN107899286A
CN107899286A CN201711202597.8A CN201711202597A CN107899286A CN 107899286 A CN107899286 A CN 107899286A CN 201711202597 A CN201711202597 A CN 201711202597A CN 107899286 A CN107899286 A CN 107899286A
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CN
China
Prior art keywords
sewage
filter element
vibration
filter
compression spring
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.)
Withdrawn
Application number
CN201711202597.8A
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Chinese (zh)
Inventor
冷应杰
于禁
张天勇
金天强
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN201711202597.8A priority Critical patent/CN107899286A/en
Publication of CN107899286A publication Critical patent/CN107899286A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/01Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
    • B01D33/03Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/70Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/76Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes

Abstract

The present invention relates to technical field of sewage treatment equipment, specifically a kind of sewage disposal vibration filtering system, including filter element, sewage pipe, sewage pump, sewage valve, discharge outlet, drain valve and vibration module, filter element includes filter frame and strainer, filter frame circumferential surface and bottom are provided with strainer, and filter element is used for realization the filtration treatment of sewage;Sewage pipe is arranged above filter element by surface-based bearing, and sewage pipe is used to be filtered in pending sewage transport to filter element;Discharge outlet is used to discharge treated sewage;Vibration module is used to make filter element shake up and down in filter process, so as to prevent the blocking of strainer, ensure that the effect of filtering.The present invention can realize the vibration of strainer in filter process, avoid the blocking of strainer.

Description

A kind of sewage disposal vibration filtering system
Technical field
The present invention relates to technical field of sewage treatment equipment, specifically a kind of sewage disposal vibration filtering system.
Background technology
Either industrial production or resident living, can all there is large amount of sewage generation daily;In order to avoid the discharge of sewage Environmental pollution is caused, various regions generally set up sewage treatment plant, sewage is reached discharge by multistep treatments such as filterings in sewage Standard, during sewage water filtration, since debris is more in sewage, frequent filter screen blocks, and causes filter effect not It is good.Frequently replace strainer can cause again sewage can not timely processing, become a difficult problem in sewage disposal process.
In consideration of it, a kind of sewage disposal vibration filtering system of the present invention, simple in structure, can be in filter process Realize the vibration of strainer, avoid the blocking of strainer, the scope of application is wider, it specifically has the beneficial effect that:
1. a kind of sewage disposal vibration filtering system of the present invention, filter element of the present invention and vibration module phase Mutually coordinate the up-down vibration for realizing strainer, make debris be not easy to be attached on strainer, avoid the frequent jams of strainer, ensure that The effect of filtering.
2. a kind of sewage disposal vibration filtering system of the present invention, the vibration module by being connected with sewage, The up-down vibration of filter element is realized using the change of water in the pressure and filter element of sewage, without increasing extra power Device, saves the consumption of the energy;Vibration module is small, simple in structure at the same time, reduces the occupancy in place.
3. a kind of sewage disposal vibration filtering system of the present invention, filter element inside different height is provided with Block, prevents debris to be stirred upwards in vibration processes, is conducive to the rapid precipitation of debris, improves the effect of filtering.
The content of the invention
In order to make up for the deficiencies of the prior art, the present invention proposes a kind of sewage disposal vibration filtering system, and the present invention is main Be used to solve in sewage disposal process, strainer frequently be blocked the problem of.The present invention passes through filter element and vibration module Cooperate, the vibration of strainer is realized in filter process, prevents attachment of the debris on strainer, avoid the stifled of strainer Plug;Meanwhile the present invention saves power source, simplifies the structure of the present invention by the way that sewage is connected with vibration module.
The technical solution adopted by the present invention to solve the technical problems is:A kind of sewage disposal of the present invention is vibrated Filter system, including filter element, sewage pipe, sewage pump, sewage valve, discharge outlet, drain valve and vibration module, the filtering are single Member is arranged in the pit-hole on ground, and filter element includes filter frame and strainer, and filter frame is the barrel-like structure of upper end opening, mistake Filter frame top is provided with round ring boss along outer edge, and filter frame circumferential surface and bottom are provided with strainer, and filter element is used for Realize the filtration treatment of sewage;The sewage pipe is arranged above filter element by surface-based bearing, sewage pipe with Sewage pump is connected with sewage valve, and sewage pipe is used to be filtered in pending sewage transport to filter element;The row The mouth of a river is arranged at the bottom of ground pit-hole, and drain valve is provided with discharge outlet, and discharge outlet is used to discharge treated sewage;Institute Vibration module quantity is stated as three, vibration module is evenly arranged on ground along pit-hole, vibration module upper end and filter element it is convex Platform is mutually fixed, and vibration module is used to make filter element shake up and down in filter process, so as to prevent the blocking of strainer, ensures The effect of filtering.During work, it is discharged into by the sewage of prefiltration by sewage pump and sewage pipe in filter element, sewage is in mistake Filter in unit and flowed into after strainer realizes filtering in pit-hole, treated sewage is discharged by discharge outlet in pit-hole;Into During row filtering, filter element realizes shake up and down under the drive of vibration module, improves the speed of filtering, avoids The frequent jams of strainer, ensure that the effect of filtering, again pour out debris when debris accumulates to a certain extent, so as to continue reality Existing effect filtering.
The vibration module includes fixed seat, movable block, supporting rod, support plate, compression spring one and compression spring two, institute State fixed seat and be installed on ground, fixed seat is cylinder, and cylinder upper surface offers cylindrical type counterbore, cylindrical sidewall bottom Water inlet is offered, cylindrical sidewall top offers water outlet, and fixed seat top is realized by cover board and sealed, and is set on cover board There is vertical through hole;The movable block is located inside fixed seat, and movable block centre position offers through hole, movable block upper surface vertically It is connected with supporting rod, sealing ring is provided between movable block and fixed seat inner wall;The support plate is located above fixed seat, branch Fagging is fixed on the supporting bar top through cover board;The compression spring one is located inside fixed seat, and one one end of compression spring is consolidated Cover board bottom is scheduled on, compression one other end of spring is fixed on movable block upper end;Compression two quantity of spring is at least two, compression Spring two is located at the outside of supporting rod, and two one end of compression spring is connected with support plate, and compression two other end of spring is fixed on lid Plate upper surface.During work, a part of sewage is connected with the water inlet of fixed seat, the solid sundries contained in sewage are deposited in Below movable block and movable block is promoted to move upwards, compression spring one is squeezed, and the debris in sewage passes through movable block After through hole, movable block moves down, and to a certain extent, movable block moves the debris accumulation below movable block again up, from And filter element is set to realize up-down vibration.
The filter frame is the V-type barrel-like structure of upper end opening, and V-type barrel-like structure is used for the area for increasing filtering.
Block is provided with the filter frame inner wall, block quantity is multiple, and block is tilted down is in filter frame side wall One acute angle, block are distributed on the different height of filter frame inner wall, prevent debris in vibration processes inside filter element to On stir, be unfavorable for debris precipitation situation occur;Block is distributed in different height and turn avoid and debris occurs and is not easy to pour out Situation.
The water inlet diameter is less than water outlet diameter, so that sewage forms pressure differential in movable block upper and lower surface, Be conducive to the movement of movable block.
The beneficial effects of the invention are as follows:
1. a kind of sewage disposal vibration filtering system of the present invention, filter element of the present invention and vibration module phase Mutually coordinate the up-down vibration for realizing strainer, make debris be not easy to be attached on strainer, avoid the frequent jams of strainer, ensure that The effect of filtering.
2. a kind of sewage disposal vibration filtering system of the present invention, the vibration module by being connected with sewage, The up-down vibration of filter element is realized using the change of water in the pressure and filter element of sewage, without increasing extra power Device, saves the consumption of the energy;Vibration module is small, simple in structure at the same time, reduces the occupancy in place.
3. a kind of sewage disposal vibration filtering system of the present invention, filter element inside different height is provided with Block, prevents debris to be stirred upwards in vibration processes, is conducive to the rapid precipitation of debris, improves the effect of filtering.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the front view of the present invention;
Fig. 2 is A-A sectional views in Fig. 1;
Fig. 3 is the sectional view of vibration module of the present invention;
In figure:Filter element 1, sewage pipe 2, discharge outlet 3, vibration module 4, fixed seat 41, movable block 42, supporting rod 43, Support plate 44, compression spring 1, compression spring 2 46, water inlet 411, water outlet 412, cover board 413, sealing ring 421, block 11。
Embodiment
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention easy to understand, tie below Embodiment is closed, the present invention is further explained.
As shown in Figure 1 to Figure 3, a kind of sewage disposal vibration filtering system of the present invention, including filter element 1, dirt Water pipe 2, sewage pump, sewage valve, discharge outlet 3, drain valve and vibration module 4, the filter element 1 are arranged at the hole on ground In hole, filter element 1 includes filter frame and strainer, and filter frame is the barrel-like structure of upper end opening, and filter frame top is along outer edge Round ring boss is provided with, filter frame circumferential surface and bottom are provided with strainer, and filter element 1 is used for realization at the filtering of sewage Reason;The sewage pipe 2 is arranged at the top of filter element 1, sewage pipe 2 and sewage pump and sewage valve by surface-based bearing It is connected, sewage pipe 2 is used to be filtered in pending sewage transport to filter element 1;The discharge outlet 3 is arranged at ground The bottom of face pit-hole, drain valve is provided with discharge outlet 3, and discharge outlet 3 is used to discharge treated sewage;The vibration module 4 quantity are three, and vibration module 4 is evenly arranged on ground along pit-hole, and 4 upper end of vibration module and the boss of filter element 1 are mutually solid Fixed, vibration module 4 is used to make the shake up and down in filter process of filter element 1, so as to prevent the blocking of strainer, ensure that The effect of filter.During work, it is discharged into by the sewage of prefiltration by sewage pump and sewage pipe 2 in filter element 1, sewage is filtering Flowed into unit 1 after strainer realizes filtering in pit-hole, treated sewage is discharged by discharge outlet 3 in pit-hole;Into During row filtering, filter element 1 realizes shake up and down under the drive of vibration module 4, improves the speed of filtering, avoids The frequent jams of strainer, ensure that the effect of filtering, when debris accumulation to a certain extent when debris is poured out again, so as to continue Realize effectively filtering.
The vibration module 4 includes fixed seat 41, movable block 42, supporting rod 43, support plate 44, compression spring 1 and pressure Contracting spring 2 46, the fixed seat 41 are installed on ground, and fixed seat 41 is cylinder, and cylinder upper surface offers cylindrical type and sinks Hole, cylindrical sidewall bottom offer water inlet 411, and cylindrical sidewall top offers water outlet 412, and 41 top of fixed seat leads to Cross cover board 413 and realize sealing, vertical through hole is provided with cover board 413;The movable block 42 is located inside fixed seat 41, movable block 42 centre positions offer through hole vertically, and 42 upper surface of movable block is connected with supporting rod 43, in movable block 42 and fixed seat 41 Sealing ring 421 is provided between wall;The support plate 44 is located at the top of fixed seat 41, and support plate 44 is fixed on through cover board 413 43 top of supporting rod;The compression spring 1 is located inside fixed seat 41, and one 45 one end of compression spring is fixed on cover board 413 Bottom, compression one 45 other end of spring are fixed on 42 upper end of movable block;Compression 2 46 quantity of spring is at least two, compresses bullet Spring 2 46 is located at the outside of supporting rod 43, and 2 46 one end of compression spring is connected with support plate 44, compresses 2 46 other end of spring It is fixed on 413 upper surface of cover board.During work, a part of sewage is connected with the water inlet 411 of fixed seat 41, is contained in sewage Solid sundries be deposited in the lower section of movable block 42 and promote movable block 42 to move upwards, compression spring 1 is squeezed, in sewage Debris pass through the through hole of movable block 42 after, movable block 42 moves down, when the debris of the lower section of movable block 42 is stacked into one Determine degree, movable block 42 moves again up, so that filter element 1 realizes up-down vibration.
The filter frame is the V-type barrel-like structure of upper end opening, and V-type barrel-like structure is used for the area for increasing filtering.
Block 11 is provided with the filter frame inner wall, 11 quantity of block is multiple, and block 11 tilts down and filter frame Side wall is in an acute angle, and block 11 is distributed on the different height of filter frame inner wall, and from the point of view of Fig. 2, block 11 forms a complete circle Ring, the situation for prevent that the debris in vibration processes inside filter element 1 from stirring upwards, being unfavorable for debris precipitation occur;Will gear Block 11, which is distributed in different height and turn avoid, there is the situation that debris is not easy to pour out.
411 diameter of water inlet is less than 412 diameter of water outlet, so that sewage is formed in 42 upper and lower surface of movable block Pressure differential, is conducive to the movement of movable block 42.
Specific workflow is as follows:
During work, it is discharged into by the sewage of prefiltration by sewage pump and sewage pipe 2 in filter element 1, sewage is filtering Flowed into unit 1 after strainer realizes filtering in pit-hole, treated sewage is discharged by discharge outlet 3 in pit-hole;Into During row filtering, a part of sewage is connected with the water inlet 411 of fixed seat 41, the solid sundries heap contained in sewage Product is below movable block 42 and promotes movable block 42 to move upwards, and compression spring 1 is squeezed, and the debris in sewage is smoothly worn After crossing the through hole of movable block 42, movable block 42 moves down, and the debris below movable block 42 is accumulated to a certain extent, movable block 42 move again up, so that filter element 1 realizes up-down vibration, improve the speed of filtering, avoid the frequent of strainer Block, ensure that the effect of filtering, block 11 is provided with filter frame inner wall, prevent in vibration processes in filter element 1 The debris in portion stirs, is unfavorable for the situation appearance of debris precipitation upwards;Debris is poured out again when debris accumulates to a certain extent, So as to continuing to realize effective filtering, block 11 is distributed on the different height of filter frame inner wall, avoids and debris occurs and be not easy down Situation about going out.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the original of the present invention Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (5)

  1. A kind of 1. sewage disposal vibration filtering system, it is characterised in that:Including filter element (1), sewage pipe (2), sewage pump, dirt Water valve, discharge outlet (3), drain valve and vibration module (4), the filter element (1) are arranged in the pit-hole on ground, filtering Unit (1) includes filter frame and strainer, and filter frame is the barrel-like structure of upper end opening, and filter frame top is provided with circle along outer edge Annular convex platform, filter frame circumferential surface and bottom are provided with strainer, and filter element (1) is used for realization the filtration treatment of sewage;Institute State sewage pipe (2) to be arranged above filter element (1) by surface-based bearing, sewage pipe (2) and sewage pump and sewage Valve is connected, and sewage pipe (2) is used to be filtered in pending sewage transport to filter element (1);The discharge outlet (3) The bottom of ground pit-hole is arranged at, discharge outlet (3) place is provided with drain valve, and discharge outlet (3) is used to discharge treated sewage; Vibration module (4) quantity is three, and vibration module (4) is evenly arranged on ground along pit-hole, vibration module (4) upper end and mistake The boss of filter unit (1) is mutually fixed, and vibration module (4) is used to make filter element (1) shake up and down in filter process.
  2. A kind of 2. sewage disposal vibration filtering system according to claim 1, it is characterised in that:The vibration module (4) Including fixed seat (41), movable block (42), supporting rod (43), support plate (44), compression spring one (45) and compression spring two (46), the fixed seat (41) is installed on ground, and fixed seat (41) is cylinder, and cylinder upper surface offers cylindrical type and sinks Hole, cylindrical sidewall lower part offer water inlet (411), and cylindrical sidewall top offers water outlet (412), fixed seat (41) Realize and seal that cover board is provided with vertical through hole on (413) by cover board (413) in top;The movable block (42) is located at fixed seat (41) internal, movable block (42) centre position offers through hole vertically, and movable block (42) upper surface is connected with supporting rod (43), Sealing ring (421) is provided between movable block (42) and fixed seat (41) inner wall;The support plate (44) is located at fixed seat (41) Top, support plate (44) are fixed on supporting rod (43) top through cover board (413);The compression spring one (45) is positioned at fixation Seat (41) is internal, and compression spring one (45) one end is fixed on cover board (413) bottom, and compression spring one (45) other end is fixed on work Motion block (42) upper end;Described compression spring two (46) quantity is two, and compression spring two (46) is located at the both sides of supporting rod (43), pressure Contracting spring two (46) one end is connected with support plate (44), and compression spring two (46) other end is fixed on cover board (413) upper surface.
  3. A kind of 3. sewage disposal vibration filtering system according to claim 1, it is characterised in that:The filter frame is upper end The V-type barrel-like structure of opening.
  4. A kind of 4. sewage disposal vibration filtering system according to claim 3, it is characterised in that:On the filter frame inner wall It is provided with block (11), block (11) quantity is multiple, and it is in an acute angle that block (11), which is tilted down with filter frame side wall, block (11) it is distributed on the different height of filter frame inner wall.
  5. A kind of 5. sewage disposal vibration filtering system according to claim 2, it is characterised in that:The water inlet (411) Diameter is less than water outlet (412) diameter.
CN201711202597.8A 2017-11-27 2017-11-27 A kind of sewage disposal vibration filtering system Withdrawn CN107899286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711202597.8A CN107899286A (en) 2017-11-27 2017-11-27 A kind of sewage disposal vibration filtering system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711202597.8A CN107899286A (en) 2017-11-27 2017-11-27 A kind of sewage disposal vibration filtering system

Publications (1)

Publication Number Publication Date
CN107899286A true CN107899286A (en) 2018-04-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108479167A (en) * 2018-05-25 2018-09-04 苏州凯新分离科技有限公司 A kind of easily detachable conduit wastewater processing unit
CN111215433A (en) * 2018-12-27 2020-06-02 杭州汉山环境工程技术有限公司 Kitchen garbage treatment equipment
CN111689610A (en) * 2020-06-18 2020-09-22 广州百畅信息科技有限公司 Metal mine washs drainage device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274531B (en) * 1967-03-13 1968-08-08 Vnii Gidromekhanizatsii Sanita System for dewatering mineral, wet processed bulk goods
CN2523484Y (en) * 2001-12-29 2002-12-04 西安交通大学 Self cleaned filter by water drived vibration
CN105944446A (en) * 2016-07-08 2016-09-21 黄斌 Environment-friendly and pollution-free domestic sewage treatment system
CN206064384U (en) * 2016-09-10 2017-04-05 北京京卫瑞源科技有限公司 Reactor precipitate defecator
CN106890499A (en) * 2017-03-21 2017-06-27 王艳丽 A kind of High-cfficiency Filtration equipment for petroleum collection
CN107252581A (en) * 2017-08-01 2017-10-17 沈晓兰 A kind of oil fast filtering equipment for petroleum collection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1274531B (en) * 1967-03-13 1968-08-08 Vnii Gidromekhanizatsii Sanita System for dewatering mineral, wet processed bulk goods
CN2523484Y (en) * 2001-12-29 2002-12-04 西安交通大学 Self cleaned filter by water drived vibration
CN105944446A (en) * 2016-07-08 2016-09-21 黄斌 Environment-friendly and pollution-free domestic sewage treatment system
CN206064384U (en) * 2016-09-10 2017-04-05 北京京卫瑞源科技有限公司 Reactor precipitate defecator
CN106890499A (en) * 2017-03-21 2017-06-27 王艳丽 A kind of High-cfficiency Filtration equipment for petroleum collection
CN107252581A (en) * 2017-08-01 2017-10-17 沈晓兰 A kind of oil fast filtering equipment for petroleum collection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108479167A (en) * 2018-05-25 2018-09-04 苏州凯新分离科技有限公司 A kind of easily detachable conduit wastewater processing unit
CN111215433A (en) * 2018-12-27 2020-06-02 杭州汉山环境工程技术有限公司 Kitchen garbage treatment equipment
CN111215433B (en) * 2018-12-27 2022-05-10 浙江绿华生态科技有限公司 Kitchen garbage treatment equipment
CN111689610A (en) * 2020-06-18 2020-09-22 广州百畅信息科技有限公司 Metal mine washs drainage device

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Application publication date: 20180413

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