CN114432806A - Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof - Google Patents

Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof Download PDF

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Publication number
CN114432806A
CN114432806A CN202111548595.0A CN202111548595A CN114432806A CN 114432806 A CN114432806 A CN 114432806A CN 202111548595 A CN202111548595 A CN 202111548595A CN 114432806 A CN114432806 A CN 114432806A
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CN
China
Prior art keywords
fixedly connected
filter
sides
sewage
box
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Pending
Application number
CN202111548595.0A
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Chinese (zh)
Inventor
李一凰
张悦
马成英
黄涛
姜兴玉
崔晓燕
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Qinghai Fangrui Engineering Consulting Co ltd
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Qinghai Fangrui Engineering Consulting Co ltd
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Priority to CN202111548595.0A priority Critical patent/CN114432806A/en
Publication of CN114432806A publication Critical patent/CN114432806A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30Particle separators, e.g. dust precipitators, using loose filtering material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F23J15/025Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2217/00Intercepting solids
    • F23J2217/10Intercepting solids by filters

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention discloses a sludge treatment device for a sewage and sewage pipeline based on rain and sewage and a use method thereof. The sludge treatment device for the rainwater sewage drainage pipeline and the use method thereof solve the problems that the existing sludge incineration device can generate a large amount of smoke during incineration, the smoke not only causes certain pollution to the surrounding air environment, but also affects the respiratory tract of an operator, and the quality of the working environment of the operator cannot be guaranteed.

Description

Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof
Technical Field
The invention relates to the technical field of rain sewage pollution discharge, in particular to a sludge treatment device for a rain sewage pollution discharge pipeline and a use method thereof.
Background
Rain sewage need use silt processing apparatus when the blowdown, and silt is handled to the mud that secretes, solidification, dehydration, stability, mummification or the course of working that burns, and silt burns the device and is one of them, but current silt burns the device and can produce a large amount of flue gases when burning, and these flue gases have not only caused certain pollution to surrounding air environment, still can cause the influence to operator's respiratory track, make operator's operational environment quality can not obtain the guarantee.
Disclosure of Invention
In order to solve the problems in the background art, the invention aims to provide a sludge treatment device for a rainwater and sewage discharge pipeline and a use method thereof, which have the advantage of filtering smoke, and solve the problems that the existing sludge incineration device can generate a large amount of smoke during incineration, the smoke not only causes certain pollution to the surrounding air environment, but also affects the respiratory tract of an operator, and the quality of the working environment of the operator cannot be guaranteed.
In order to achieve the purpose, the invention provides the following technical scheme: a sludge treatment device for a sewage discharge pipeline based on rain and sewage and a use method thereof comprise a treatment box;
the incineration cylinder is fixedly connected to the left side of the top of the treatment box;
the left front side of processing case top and the equal fixedly connected with upstand of rear side, the inboard top fixedly connected with filter cartridge of upstand, the bottom of filter cartridge is located the top of burning a section of thick bamboo, the horizontal fixedly connected with filter plate in bottom of filter cartridge inner chamber, the inside packing of filter plate has the anthracite filter material, the top of filter plate is provided with the filter core, the both sides of filter core all with the inner wall fixed connection of filter cartridge, the gas outlet has been seted up at the top of filter cartridge, the smoke inlet has been seted up to the bottom of filter cartridge, the equal fixedly connected with in both sides of processing case is used for removing the structure of processing the case.
Preferably, the structure for moving the processing box is a transmission box which is fixedly connected to two sides of the processing box, the top of an inner cavity of the transmission box is fixedly connected with an air cylinder, the output end of the air cylinder is fixedly connected with a transverse plate, two sides of the transverse plate are slidably connected with the inner wall of the transmission box, two sides of the bottom of the transverse plate are fixedly connected with toothed plates, two sides of the bottom of the back of the inner cavity of the transmission box are movably connected with gears through bearings, the outer sides of the gears are meshed with the toothed plates, the inner sides of the gears are provided with strip-shaped toothed blocks, the outer sides of the strip-shaped toothed blocks are meshed with the gears, the bottoms of the strip-shaped toothed blocks are fixedly connected with connecting blocks, the bottoms of the connecting blocks are fixedly connected with universal wheels, and the bottoms of the universal wheels extend to the bottoms of the transmission box.
Preferably, the two sides of the cylinder are fixedly connected with limit plates, and the outer sides of the limit plates are fixedly connected with the inner wall of the transmission case.
Preferably, the bottom of the limiting plate is fixedly connected with a spring, and the bottom of the spring is fixedly connected with the transverse plate.
Preferably, the two sides of the inner cavity of the transmission case are both provided with slide rails, and the two sides of the transverse plate are both connected inside the slide rails in a sliding manner.
Preferably, the front surface of the filter element is fixedly connected with a bamboo charcoal sticker, and the bamboo charcoal sticker is matched with the filter element for use.
Preferably, the two sides of the bottom of the filter element are fixedly connected with connecting filter blocks, and the bottom of each connecting filter block is fixedly connected with a filter plate.
S1: firstly the flue gas will enter into the inside of filter cartridge through advancing the mouth when burning, then the inside filter plate of filter cartridge will carry out primary filtration to it, the inside anthracite filter material of filter plate also can evolve the flue gas once more when primary filtration, then the flue gas can upwards waft, waft on the filter core, the filter core carries out secondary filtration to the flue gas, then its surperficial bamboo charcoal pastes and carries out secondary purification to the flue gas, the flue gas after secondary filtration and secondary purification passes through the gas outlet discharge can, reach and to carry out filterable effect to the flue gas.
S2: then the user starts the cylinder, and the output of cylinder drives diaphragm rebound, and the diaphragm drives the pinion rack rebound, and the pinion rack drives the gear rotation, and the gear drives rectangular tooth piece rebound, and rectangular tooth piece drives connecting block and universal wheel rebound, makes the universal wheel extend to the bottom of transmission case, then the user just can push away the removal of processing case, reaches the effect that can remove.
Compared with the prior art, the invention has the following beneficial effects:
1. the sludge treatment device for the rain sewage and sewage discharge pipeline and the use method thereof solve the problems that the existing sludge incineration device can generate a large amount of smoke during incineration, the smoke not only causes certain pollution to the surrounding air environment, but also affects the respiratory tract of an operator, and the quality of the working environment of the operator cannot be guaranteed.
2. According to the invention, through the arrangement of the transmission case, the air cylinder, the transverse plate, the toothed plate, the gear, the strip toothed block, the connecting block and the universal wheel, the treatment case can move more smoothly, and meanwhile, the operation of a user is facilitated.
3. According to the invention, through the arrangement of the limiting plate, the air cylinder can operate more stably, and meanwhile, the limiting effect is achieved.
4. According to the invention, through the arrangement of the spring, the transverse plate can move upwards more stably, and the damping effect is achieved.
5. According to the invention, through the arrangement of the slide rails, the transverse plate can slide in the transmission case more smoothly, and the friction between the transverse plate and the transmission case is reduced.
6. According to the bamboo charcoal filter, the bamboo charcoal paste is arranged, so that the filtering effect of the filter element can be increased, and the phenomenon of incomplete filtering is avoided.
7. According to the invention, through the arrangement of the connecting filter block, the filter plate and the filter element can be more stable, and the separation phenomenon is prevented.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front cross-sectional view of a cartridge of the present invention;
FIG. 3 is an enlarged structural view of the point A in FIG. 2;
FIG. 4 is a front cross-sectional view of the transmission case of the present invention;
FIG. 5 is an enlarged view of the structure of the invention at B in FIG. 4;
fig. 6 is a bottom view of a portion of the present invention.
In the figure: 1. a treatment tank; 2. an incineration cylinder; 3. a vertical post; 4. a filter box; 5. filtering the plate; 6. anthracite filter material; 7. a filter element; 8. an air outlet; 9. a smoke inlet; 10. a transmission case; 11. a cylinder; 12. a transverse plate; 13. a toothed plate; 14. a gear; 15. a strip tooth block; 16. connecting blocks; 17. a universal wheel; 18. a limiting plate; 19. a spring; 20. a slide rail; 21. bamboo charcoal paste; 22. and connecting the filter block.
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.
As shown in fig. 1 to 6, the sludge treatment device for a rainwater-based sewage drainage pipeline and the use method thereof provided by the invention comprise a treatment tank 1;
the incineration cylinder 2 is fixedly connected to the left side of the top of the treatment box 1;
handle the equal fixedly connected with upstand 3 of left front side in case 1 top and rear side, the inboard top fixedly connected with filter cartridge 4 of upstand, the bottom of filter cartridge 4 is located the top of burning a section of thick bamboo 2, the horizontal fixedly connected with filter plate 5 in bottom of the 4 inner chambers of filter cartridge, the inside packing of filter plate 5 has anthracite filter material 6, the top of filter plate 5 is provided with filter core 7, the both sides of filter core 7 all with the inner wall fixed connection of filter cartridge 4, gas outlet 8 has been seted up at the top of filter cartridge 4, the bottom of filter cartridge 4 has been seted up into smoke inlet 9, the equal fixedly connected with in both sides of handling case 1 is used for removing the structure of handling case 1.
Referring to fig. 4 and 5, the structure for moving the processing box 1 is transmission box 10 with equal fixed connection at both sides of the processing box 1, the top fixedly connected with cylinder 11 of the inner cavity of the transmission box 10, the output end fixedly connected with transverse plate 12 of the cylinder 11, both sides of the transverse plate 12 are all connected with the inner wall of the transmission box 10 in a sliding manner, both sides of the bottom of the transverse plate 12 are all fixedly connected with toothed plates 13, both sides of the bottom of the back of the inner cavity of the transmission box 10 are all connected with gears 14 through bearings in a movable manner, the outer side of the gears 14 is meshed with the toothed plates 13, the inner side of the gears 14 is provided with strip toothed blocks 15, the outer side of the strip toothed blocks 15 is meshed with the gears 14, the bottom fixedly connected with connecting blocks 16 of the strip toothed blocks 15, the bottom of the connecting blocks 16 is fixed and connected with universal wheels 17, and the bottom of the universal wheels 17 extends to the bottom of the transmission box 10.
As a technical optimization scheme of the invention, the treatment box 1 can move more smoothly through the arrangement of the transmission box 10, the air cylinder 11, the transverse plate 12, the toothed plate 13, the gear 14, the long toothed block 15, the connecting block 16 and the universal wheel 17, and meanwhile, the operation is convenient for a user.
Referring to fig. 5, both sides of the cylinder 11 are fixedly connected with a limiting plate 18, and the outer side of the limiting plate 18 is fixedly connected with the inner wall of the transmission case 10.
As a technical optimization scheme of the invention, the air cylinder 11 can operate more stably through the arrangement of the limit plate 18, and meanwhile, the limit effect is achieved.
Referring to fig. 5, a spring 19 is fixedly connected to the bottom of the limit plate 18, and the bottom of the spring 19 is fixedly connected to the cross plate 12.
As a technical optimization scheme of the invention, the transverse plate 12 can move upwards more stably through the arrangement of the spring 19, and the damping effect is achieved.
Referring to fig. 5, the two sides of the inner cavity of the transmission case 10 are both provided with slide rails 20, and the two sides of the horizontal plate 12 are both slidably connected inside the slide rails 20.
As a technical optimization scheme of the invention, the transverse plate 12 can slide more smoothly inside the transmission case 10 by the arrangement of the slide rails 20, and the friction between the transverse plate 12 and the transmission case 10 is reduced.
Referring to fig. 5, the front surface of the filter element 7 is fixedly connected with a bamboo charcoal sticker 21, and the bamboo charcoal sticker 21 is used in cooperation with the filter element 7.
As a technical optimization scheme of the invention, the bamboo charcoal sticker 21 is arranged, so that the filtering effect of the filter element 7 can be increased, and the phenomenon of incomplete filtering is avoided.
Referring to fig. 3, the filter element 7 is fixedly connected with a connecting filter block 22 at both sides of the bottom thereof, and the bottom of the connecting filter block 22 is fixedly connected with the filter plate 5.
As a technical optimization scheme of the invention, the filter plate 5 and the filter element 7 can be more stable by arranging the connecting filter block 22, and the separation phenomenon is prevented.
S1: firstly the flue gas will enter into the inside of filter cartridge 4 through advancing cigarette mouth 9 when burning, then filter cartridge 4 inside filter plate 5 will carry out primary filtration to it, filter plate 5 inside anthracite filter material 6 also can evolve the flue gas once more when once filterable, then the flue gas can upwards waft, waft on filter core 7, filter core 7 carries out secondary filtration to the flue gas, then its surperficial bamboo charcoal subsides 21 carries out secondary purification to the flue gas, the flue gas after secondary filtration and secondary purification passes through gas outlet 8 discharge can, reach and to carry out filterable effect to the flue gas.
S2: then the user starts cylinder 11, the output of cylinder 11 drives diaphragm 12 rebound, diaphragm 12 drives pinion rack 13 rebound, pinion rack 13 drives the gear 14 rotatory, gear 14 drives rectangular tooth piece 15 rebound, rectangular tooth piece 15 drives connecting block 16 and universal wheel 17 rebound, make universal wheel 17 extend to the bottom of transmission case 10, then the user just can push away and handle case 1 and remove, reach the effect that can remove.
The working principle and the using process of the invention are as follows: firstly, smoke enters the filter box 4 through the smoke inlet 9 during incineration, then the filter plate 5 inside the filter box 4 filters the smoke for the first time, while the smoke is filtered for the first time, the anthracite filter material 6 inside the filter plate 5 evolves the smoke again, then the smoke drifts upwards and drifts on the filter element 7, the filter element 7 filters the smoke for the second time, then the bamboo charcoal sticker 21 on the surface of the filter plate carries out the second purification on the smoke, the smoke after the second filtration and the second purification is discharged through the gas outlet 8, so as to achieve the effect of filtering the smoke, then a user starts the cylinder 11, the output end of the cylinder 11 drives the transverse plate 12 to move upwards, the transverse plate 12 drives the toothed plate 13 to move upwards, the toothed plate 13 drives the gear 14 to rotate, the gear 14 drives the strip toothed block 15 to move downwards, the strip toothed block 15 drives the connecting block 16 and the universal wheel 17 to move downwards, so that the universal wheel 17 extends to the bottom of the transmission case 10, the user can then push the treatment chamber 1 to move, which has the effect of being movable.
In conclusion: this silt processing apparatus for sewage pipes based on rain and water and application method thereof, through handling case 1, burn a section of thick bamboo 2, upstand 3, filter cartridge 4, filter plate 5, anthracite filter material 6, filter core 7, gas outlet 8 and the cooperation of entering smoke mouth 9 is used, reach and to carry out filterable effect to the flue gas, this silt processing apparatus for sewage pipes based on rain and water and application method thereof, it can produce a large amount of flue gases to have solved current silt and burned the device and burn when burning, and these flue gases have not only caused certain pollution to the air circumstance on every side, still can cause the influence to operator's respiratory track, make operator's operational environment quality can not obtain the problem of guarantee.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are 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.
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 (8)

1. A sludge treatment device for a sewage discharge pipeline based on rain sewage comprises a treatment box (1);
the incineration cylinder (2) is fixedly connected to the left side of the top of the treatment box (1);
the method is characterized in that: handle the left front side in case (1) top and the equal fixedly connected with upstand (3) of rear side, the inboard top fixedly connected with filter cartridge (4) of upstand (3), the bottom of filter cartridge (4) is located the top of burning a section of thick bamboo (2), the horizontal fixedly connected with filter plate (5) in bottom of filter cartridge (4) inner chamber, the inside packing of filter plate (5) has anthracite filter material (6), the top of filter plate (5) is provided with filter core (7), the both sides of filter core (7) all with the inner wall fixed connection of filter cartridge (4), gas outlet (8) have been seted up at the top of filter cartridge (4), smoke inlet (9) have been seted up to the bottom of filter cartridge (4), the equal fixedly connected with in both sides of handling case (1) is used for removing the structure of handling case (1).
2. The sludge treatment apparatus for a rainwater-based sewage drain pipe according to claim 1, wherein: the structure for moving the treatment box (1) is a transmission box (10) which is fixedly connected with the two sides of the treatment box (1), the top of the inner cavity of the transmission box (10) is fixedly connected with a cylinder (11), the output end of the cylinder (11) is fixedly connected with a transverse plate (12), the two sides of the transverse plate (12) are slidably connected with the inner wall of the transmission box (10), the two sides of the bottom of the transverse plate (12) are fixedly connected with toothed plates (13), the two sides of the bottom of the back of the inner cavity of the transmission box (10) are movably connected with gears (14) through bearings, the outer side of each gear (14) is meshed with the toothed plates (13), the inner side of each gear (14) is provided with a long toothed block (15), the outer side of each long toothed block (15) is meshed with the gear (14), the bottom of each long toothed block (15) is fixedly connected with a connecting block (16), and the bottom of each connecting block (16) is fixedly connected with a universal wheel (17), the bottom of the universal wheel (17) extends to the bottom of the transmission case (10).
3. The sludge treatment apparatus for a rainwater-based sewage drainage pipeline according to claim 2, wherein: the two sides of the air cylinder (11) are fixedly connected with limiting plates (18), and the outer sides of the limiting plates (18) are fixedly connected with the inner wall of the transmission case (10).
4. The sludge treatment apparatus for a rainwater-based sewage drain pipe according to claim 3, wherein: the bottom of the limiting plate (18) is fixedly connected with a spring (19), and the bottom of the spring (19) is fixedly connected with the transverse plate (12).
5. The sludge treatment apparatus for a rainwater-based sewage drainage pipeline according to claim 2, wherein: slide rails (20) have all been seted up to the both sides of transmission case (10) inner chamber, the equal sliding connection in the inside of slide rail (20) in both sides of diaphragm (12).
6. The sludge treatment apparatus for a rainwater-based sewage drain pipe according to claim 1, wherein: the front side of the filter element (7) is fixedly connected with a bamboo charcoal sticker (21), and the bamboo charcoal sticker (21) is matched with the filter element (7) for use.
7. The sludge treatment apparatus for a rainwater-based sewage drain pipe according to claim 1, wherein: the filter is characterized in that the two sides of the bottom of the filter element (7) are fixedly connected with a connecting filter block (22), and the bottom of the connecting filter block (22) is fixedly connected with the filter plate (5).
8. A method for treating sludge for a storm sewage based sewer according to any one of the preceding claims, wherein: the method comprises the following steps:
s1: firstly the flue gas will enter into the inside of straining box (4) through advancing cigarette mouth (9) when burning, then filter box (4) inside filter plate (5) will carry out primary filtration to it, the inside anthracite filter material (6) of filter plate (5) also can evolve the flue gas once more when once filterable, then the flue gas can upwards waft, waft on filter core (7), filter core (7) carry out secondary filtration to the flue gas, then its surperficial bamboo charcoal subsides (21) carry out secondary purification to the flue gas, the flue gas after secondary filtration and secondary purification passes through gas outlet (8) discharge can, reach and to carry out filterable effect to the flue gas.
S2: then user starts cylinder (11), the output of cylinder (11) drives diaphragm (12) rebound, diaphragm (12) drive pinion rack (13) rebound, pinion rack (13) drive gear (14) rotation, gear (14) drive rectangular tooth piece (15) rebound, rectangular tooth piece (15) drive connecting block (16) and universal wheel (17) rebound, make universal wheel (17) extend to the bottom of transmission case (10), then the user just can push away and handle case (1) and remove, reach the effect that can remove.
CN202111548595.0A 2021-12-17 2021-12-17 Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof Pending CN114432806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111548595.0A CN114432806A (en) 2021-12-17 2021-12-17 Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111548595.0A CN114432806A (en) 2021-12-17 2021-12-17 Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof

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Publication Number Publication Date
CN114432806A true CN114432806A (en) 2022-05-06

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CN202111548595.0A Pending CN114432806A (en) 2021-12-17 2021-12-17 Sludge treatment device for sewage discharge pipeline based on rain sewage and use method thereof

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9084964B1 (en) * 2014-05-08 2015-07-21 Alstom Technology Radial fabric filter for particulate collection
CN109615979A (en) * 2019-01-14 2019-04-12 淄博职业学院 Instructional device is used in a kind of teaching of computer software programming
CN209439481U (en) * 2018-12-29 2019-09-27 南通新强机床制造有限公司 A kind of mechanical automation drilling machine easy to remove
CN213041039U (en) * 2020-07-20 2021-04-23 邱达尔么 Waste gas treatment mechanism of metal smelting furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9084964B1 (en) * 2014-05-08 2015-07-21 Alstom Technology Radial fabric filter for particulate collection
CN209439481U (en) * 2018-12-29 2019-09-27 南通新强机床制造有限公司 A kind of mechanical automation drilling machine easy to remove
CN109615979A (en) * 2019-01-14 2019-04-12 淄博职业学院 Instructional device is used in a kind of teaching of computer software programming
CN213041039U (en) * 2020-07-20 2021-04-23 邱达尔么 Waste gas treatment mechanism of metal smelting furnace

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Application publication date: 20220506