CN216367002U - Circulating water supply sewage filters environmental protection equipment - Google Patents
Circulating water supply sewage filters environmental protection equipment Download PDFInfo
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- CN216367002U CN216367002U CN202123005063.0U CN202123005063U CN216367002U CN 216367002 U CN216367002 U CN 216367002U CN 202123005063 U CN202123005063 U CN 202123005063U CN 216367002 U CN216367002 U CN 216367002U
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- water supply
- circulating water
- environment
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000010865 sewage Substances 0.000 title claims abstract description 30
- 230000007613 environmental effect Effects 0.000 title description 9
- 239000002893 slag Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims abstract description 36
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 239000013049 sediment Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000003818 cinder Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000007790 scraping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
The utility model belongs to the technical field of filtering equipment, and particularly relates to circulating water supply sewage filtering environment-friendly equipment which comprises an outer cylinder and an inner cylinder, wherein a water inlet cylinder is fixedly installed at the top of the outer cylinder, an installation ring is fixedly installed on the inner wall of the top of the outer cylinder, an arc-shaped plate is fixedly installed on the bottom side of the installation ring, an arc-shaped filter plate is arranged on the arc-shaped plate, a strip-shaped plate is fixedly installed on the side wall of the inner cylinder, and a double-shaft motor is arranged on the bottom side of the strip-shaped plate. The cleaning device is reasonable in design and simple in operation, can filter impurities in sewage and clean the arc-shaped filter plate under the action of the shifting plate, can discharge the cleaned impurities into the slag collecting box through the slag discharging port, can synchronously control the scraper to clean the impurities in the slag collecting box when the closing plate is operated through the limiting screw rod, can push the scraper to reset under the action of the pushing spring when the closing plate is reset, and is convenient to use.
Description
Technical Field
The utility model relates to the technical field of filtering equipment, in particular to environment-friendly equipment for filtering sewage from circulating water supply.
Background
The water resource is an important energy source which is unnecessary to be reduced for human life, and the reasonable utilization of the water resource is particularly important, wherein the water resource is one of the water resource, the water resource is required to be filtered by a filtering device when the water resource is circularly used, the filtering effect of the existing environment-friendly filtering equipment for the circulating water supply sewage on impurities and residues in the sewage is not good enough when the existing environment-friendly filtering equipment for the circulating water supply sewage on a kitchen filters the sewage generated, the inner wall of the environment-friendly filtering equipment needs to be cleaned regularly after the environment-friendly filtering equipment is used for a long time, the operation is relatively complicated, and meanwhile, the impurities deposited on the filtering plate are cleaned to cause the blocking of the filtering plate and reduce the filtering efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides environment-friendly equipment for filtering sewage from circulating water supply.
The technical purpose of the utility model is realized by the following technical scheme: a circulating water supply sewage filtering environment-friendly device comprises an outer barrel and an inner barrel, wherein a water inlet barrel is fixedly mounted at the top of the outer barrel, a mounting ring is fixedly mounted on the inner wall of the top of the outer barrel, an arc-shaped plate is fixedly mounted at the bottom side of the mounting ring, an arc-shaped filter plate is arranged on the arc-shaped plate, a strip-shaped plate is fixedly mounted on the side wall of the inner barrel, a double-shaft motor is arranged at the bottom side of the strip-shaped plate, an upper rotating shaft is fixedly connected to a first output shaft of the double-shaft motor, the top end of the upper rotating shaft extends to the upper side of the arc-shaped filter plate, a plurality of shifting plates are fixedly mounted on the upper side of the arc-shaped filter plate, a plurality of slag discharge ports are formed in the side wall of the mounting ring, rotating plates are rotatably mounted in the plurality of slag discharge ports, a lower rotating shaft is fixedly connected to a second output shaft of the double-shaft, a plurality of cross rods are fixedly mounted on the lower rotating shaft, and the same strip-shaped brush is fixedly mounted on the cross rods positioned on the same side, and the lateral wall of bar brush and interior barrel contacts, fixed mounting has a plurality of collection sediment casees on the outer barrel, and the top of a plurality of collection sediment casees all is provided with the opening, one side demountable installation that interior barrel was kept away from to the collection sediment case has the shrouding, the bottom fixed mounting of outer barrel has the drain pipe, the top and the interior barrel of drain pipe are linked together, and are provided with the control valve on the drain pipe.
Preferably, the same rotating pin is rotatably installed on the inner walls of the front side and the rear side of the slag discharging port, the rotating plate is fixedly installed on the rotating pin, the torsion spring is fixedly installed on the front side of the rotating plate, one end, far away from the rotating plate, of the torsion spring is fixedly connected with the inner wall of the front side of the slag discharging port, and the torsion spring is movably sleeved on the outer side of the rotating pin.
Preferably, a support plate is fixedly arranged on the inner wall of the top of the slag collecting box, the support plate and the side wall of the slag collecting box are fixedly provided with the same guide rod, a scraper is arranged in the slag collecting box in a sliding manner and is connected with the guide rod in a sliding manner,
preferably, the inner walls of the front side and the rear side of the slag collecting box are rotatably provided with the same fixed pulley, the fixed pulley is wound with a pull rope, and two ends of the pull rope are respectively fixedly connected with the sealing plate and the scraper.
Preferably, the same return pipe is connected between the bottom of the slag collecting box and the inner cylinder, a filter cartridge is fixedly mounted on the return pipe, and filter cotton cores are arranged in the filter cartridge and the return pipe.
Preferably, the shifting plate is arranged in an arc shape, and the bottom side of the shifting plate is contacted with the arc-shaped filter plate.
Preferably, the shrouding is threaded and is installed spacing lead screw, and the fixed cover in the outside of spacing lead screw is equipped with anti-skidding handle cover, has seted up a plurality of spacing screws on the outer peripheral face of outer barrel, and spacing lead screw thread mounting is in the spacing screw that corresponds.
Preferably, a protection box is fixedly installed on the bottom side of the strip-shaped plate, and the double-shaft motor is fixedly installed in the protection box.
Preferably, a pushing spring is fixedly mounted on one side of the support plate, one end, far away from the support plate, of the pushing spring is fixedly connected with the side wall of the slag collecting box, and the pushing spring is movably sleeved on the outer side of the guide rod.
The utility model has the beneficial effects that: in the utility model, the upper rotating shaft is driven by the double-shaft motor to enable the plurality of shifting plates to clean impurities filtered from the arc-shaped filter plates, the impurities are discharged into the slag collecting box through the slag discharging port, the deflection angle of the rotating plates can be automatically controlled under the action of the rotating pin and the torsion spring, the transverse rod is driven by the lower rotating shaft to enable the strip-shaped brush to clean the side wall of the inner barrel, so that the occurrence of water rust on the side wall of the inner barrel can be avoided, the position of the sealing plate can be fixed through the limiting screw rod, the sealing plate can be conveniently disassembled and assembled, when the sealing plate is pulled upwards through the limiting screw rod, the scraping plates can be controlled to clean the impurities in the slag collecting box under the matching of the pulling rope, the scraping plates can be pushed to reset under the action of the pushing spring when the sealing plate is reset, and water screened from the impurities can flow back into the inner barrel through the return pipe and the filter barrel, can filter the water of backward flow under the cooperation of filtering the cotton core, can avoid back flow and cartridge filter to appear blockking up simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of a three-dimensional structure of a circulating water supply sewage filtering environmental protection device provided by the utility model;
FIG. 2 is a schematic view of a cross-sectional structure of an environmental protection device for filtering sewage from a circulating water supply according to the present invention;
FIG. 3 is a schematic structural view of part A of the circulating water supply sewage filtering environmental protection equipment provided by the utility model;
FIG. 4 is a schematic structural diagram of part B of the circulating water supply sewage filtering environmental protection equipment provided by the utility model;
FIG. 5 is a schematic structural diagram of part C of the environment-friendly equipment for filtering sewage from the circulating water supply provided by the utility model;
FIG. 6 is a schematic structural view of part D of the circulating water-supplied sewage filtering environmental protection apparatus according to the present invention;
fig. 7 is a schematic top view of a spiral shifting plate in a second embodiment of the environmental protection equipment for filtering sewage from circulating water supply according to the present invention.
In the figure: 1. an outer cylinder; 2. a water inlet cylinder; 3. a mounting ring; 4. an arc-shaped plate; 5. an inner cylinder; 6. a strip plate; 7. a protection box; 8. a double-shaft motor; 9. an upper rotating shaft; 10. dialing a plate; 11. a rotating plate; 12. a lower rotating shaft; 13. a cross bar; 14. a strip-shaped brush; 15. a slag collection box; 16. a return pipe; 17. a filter cartridge; 18. a guide bar; 19. a squeegee; 20. closing the plate; 21. and a limiting screw rod.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
The first embodiment is as follows: referring to fig. 1-6, a circulating water supply sewage filtering environmental protection device comprises an outer cylinder 1 and an inner cylinder 5, wherein a water inlet cylinder 2 is fixedly installed at the top of the outer cylinder 1, an installation ring 3 is fixedly installed on the inner wall of the top of the outer cylinder 1, an arc-shaped plate 4 is fixedly installed at the bottom side of the installation ring 3, an arc-shaped filter plate is arranged on the arc-shaped plate 4, a strip-shaped plate 6 is fixedly installed on the side wall of the inner cylinder 5, a double-shaft motor 8 is arranged at the bottom side of the strip-shaped plate 6, an upper rotating shaft 9 is fixedly connected to a first output shaft of the double-shaft motor 8, the top end of the upper rotating shaft 9 extends to the upper side of the arc-shaped filter plate and is fixedly provided with a plurality of shifting plates 10, a plurality of slag discharge ports are formed in the side wall of the installation ring 3, a rotating plate 11 is rotatably installed in the slag discharge ports, and a lower rotating shaft 12 is fixedly connected to a second output shaft of the double-shaft motor 8, fixed mounting has a plurality of horizontal poles 13 on the lower rotating shaft 12, lies in fixed mounting and has same bar brush 14 on a plurality of horizontal poles 13 with one side, and bar brush 14 contacts with the lateral wall of interior barrel 5, fixed mounting has a plurality of collection sediment casees 15 on the outer barrel 1, and a plurality of collection sediment casees 15's top all is provided with the opening, one side demountable installation that interior barrel 5 was kept away from to collection sediment case 15 has shrouding 20, the bottom fixed mounting of outer barrel 1 has the drain pipe, the top and the interior barrel 5 of drain pipe are linked together, and are provided with the control valve on the drain pipe.
In this embodiment, rotate on the inner wall of both sides around the cinder notch and install same rotating pin, rotor plate 11 fixed mounting rotates on the round pin, and the front side fixed mounting of rotor plate 11 has the torsional spring, and the torsional spring is kept away from the one end of rotor plate 11 and the front side inner wall fixed connection of cinder notch, and the torsional spring movable sleeve is established in the outside of rotating pin, can automatic control the switching state of cinder notch through torsional spring slide bar rotating pin.
In this embodiment, a support plate is fixedly mounted on the inner wall of the top of the slag collection box 15, the same guide rod 18 is fixedly mounted on the support plate and the side wall of the slag collection box 15, a scraper 19 is slidably mounted in the slag collection box 15, the scraper 19 is slidably connected with the guide rod 18, impurities in the slag collection box 15 can be cleaned through the scraper 19, and the scraper 19 can keep stable movement under the action of the guide rod 18,
in this embodiment, rotate on the both sides inner wall around collection sediment case 15 and install same fixed pulley, around being equipped with the stay cord on the fixed pulley, and the both ends of stay cord respectively with shrouding 20 and 19 fixed connection of scraper blade, can strike off the debris of drawing scraper blade 19 in to collection sediment case 15 when shrouding 20 upwards moves through stay cord and fixed pulley.
In this embodiment, be connected with same back flow 16 between the bottom of collection sediment case 15 and the interior barrel 5, fixed mounting has cartridge filter 17 on the back flow 16, and all is provided with the filtration cotton core in cartridge filter 17 and the back flow 16, can return to the interior barrel 5 with the water of combing out in the debris under the cooperation of back flow 16 and cartridge filter 17 in, can filter the water of backward flow under the effect of filtration cotton core simultaneously to can avoid debris to get into in back flow 16 and the cartridge filter 17.
In this embodiment, dial board 10 and be bow-shaped setting, and dial the bottom side of board 10 and contact with the arc filter plate, dial board 10 through the arc setting and can stir the impurity of clearing up out on the arc filter plate to the slag notch.
In this embodiment, spacing lead screw 21 is installed to the last screw thread of shrouding 20, and the fixed cover in the outside of spacing lead screw 21 is equipped with anti-skidding handle cover, has seted up a plurality of spacing screws on the outer peripheral face of outer barrel 1, and spacing lead screw 21 screw thread is installed in the spacing screw that corresponds, is convenient for carry out the dismouting to shrouding 20 through spacing lead screw 21, can prescribe a limit to shrouding 20's position simultaneously under the cooperation of spacing screw.
In this embodiment, the bottom side fixed mounting of strip shaped plate 6 has guard box 7, and biax motor 8 fixed mounting can provide effectual protection to biax motor 8 through guard box 7 in guard box 7 to can make biax motor 8 remain stable work.
In this embodiment, a pushing spring is fixedly installed on one side of the support plate, one end of the pushing spring, which is far away from the support plate, is fixedly connected with the side wall of the slag collecting tank 15, and the pushing spring is movably sleeved on the outer side of the guide rod 18, so that when the sealing plate 20 is reset through the pushing spring, the scraping plate 19 is pushed to slide towards the direction close to the inner cylinder 5 and reset.
The working principle is as follows: when the device is used, firstly, a power supply is switched on, sewage to be filtered is led in from the water inlet cylinder 2 and is filtered under the action of the arc-shaped filter plate, the double-shaft motor 8 is started, a first output shaft of the double-shaft motor 8 drives the plurality of shifting plates 10 to scrape sundries on the arc-shaped filter plate through the upper rotating shaft 9, meanwhile, the shifting plates 10 are arranged in an arc shape, so that the cleaned sundries can be pushed to a residue discharge port, the rotating plates 11 can be deflected by the sundries extruding the rotating plates 11, so that the sundries can be discharged into the residue collection box 15 from the residue discharge port, water passing through the arc-shaped filter plate passes through the inner cylinder 5 and then is discharged through the drain pipe, meanwhile, the cross rod 13 drives the strip-shaped brush 14 to clean the side wall of the inner cylinder 5 through the lower rotating shaft 12 under the action of a second output shaft of the double-shaft motor 8, so that sundries such as water rust and the like can be effectively prevented from adhering to the side wall of the inner cylinder 5, water in sundries entering the slag collecting box 15 flows back to the inner barrel 5 through the return pipe 16 and the filter cylinder 17, the returned water can be filtered under the action of the filter cotton core, meanwhile, residues in the sundries can be prevented from entering the return pipe 16 and the filter cylinder 17, the anti-skidding handle sleeve is held to screw the limiting screw rod 21 out of the limiting screw hole, and then the limiting screw rod is pulled upwards, so that the slag collecting box 15 can be opened through the sealing plate 20, meanwhile, the scraper 19 is pulled under the action of the pulling rope and the fixed pulley to scrape the sundries in the slag collecting box 15, the scraper 19 can keep stable movement under the action of the guide rod 18, after the slag collecting box 15 is cleaned, the scraper 19 is pushed under the action of the pushing spring to slide towards the direction close to the inner barrel 5 and reset, and meanwhile, the pulling rope can be prevented from scattering.
Example two: the difference between the second embodiment and the first embodiment is that the upper rotating shaft 9 is fixedly connected to the first output shaft of the double-shaft motor 8, the fixed sleeve is arranged on the upper rotating shaft 9, the spiral shifting plate is fixedly mounted on the outer peripheral surface of the fixed plate, the spiral shifting plate is matched with the arc-shaped filter plate, and the spiral shifting plate can push sundries filtered out by the arc-shaped filter plate to the position of the deslagging port, so that the sundries can be discharged through the deslagging port conveniently.
The environment-friendly equipment for filtering the sewage from the circulating water supply is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The environment-friendly sewage filtering equipment for circulating water supply comprises an outer barrel body (1) and an inner barrel body (5), and is characterized in that a water inlet barrel (2) is fixedly mounted at the top of the outer barrel body (1), a mounting ring (3) is fixedly mounted on the inner wall of the top of the outer barrel body (1), an arc-shaped plate (4) is fixedly mounted at the bottom side of the mounting ring (3), an arc-shaped filter plate is arranged on the arc-shaped plate (4), a strip-shaped plate (6) is fixedly mounted on the side wall of the inner barrel body (5), a double-shaft motor (8) is arranged at the bottom side of the strip-shaped plate (6), an upper rotating shaft (9) is fixedly connected to a first output shaft of the double-shaft motor (8), the top end of the upper rotating shaft (9) extends to the upper part of the arc-shaped filter plate and is fixedly provided with a plurality of shifting plates (10), and a plurality of slag discharge ports are formed in the side wall of the mounting ring (3), all rotate in a plurality of row's mouths and install rotor plate (11), pivot (12) under the fixedly connected with on the second output shaft of double-shaft motor (8), fixed mounting has a plurality of horizontal poles (13) down on pivot (12), lies in fixed mounting and has same bar brush (14) on a plurality of horizontal poles (13) with one side, and bar brush (14) contact with the lateral wall of interior barrel (5), fixed mounting has a plurality of collection sediment casees (15) on outer barrel (1), and the top of a plurality of collection sediment casees (15) all is provided with the opening, one side demountable installation that interior barrel (5) were kept away from in collection sediment case (15) has shrouding (20), the bottom fixed mounting of outer barrel (1) has the drain pipe, the top and interior barrel (5) of drain pipe are linked together, and are provided with the control valve on the drain pipe.
2. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 1, characterized in that: the slag discharging hole is characterized in that the inner walls of the front side and the rear side of the slag discharging hole are rotatably provided with the same rotating pin, the rotating plate (11) is fixedly arranged on the rotating pin, the front side of the rotating plate (11) is fixedly provided with a torsion spring, one end of the torsion spring, far away from the rotating plate (11), is fixedly connected with the inner wall of the front side of the slag discharging hole, and the torsion spring is movably sleeved on the outer side of the rotating pin.
3. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 1, characterized in that: a support plate is fixedly mounted on the inner wall of the top of the slag collecting box (15), the support plate and the side wall of the slag collecting box (15) are fixedly provided with the same guide rod (18), a scraper (19) is slidably mounted in the slag collecting box (15), and the scraper (19) is slidably connected with the guide rod (18).
4. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 3, wherein: the inner walls of the front side and the rear side of the slag collecting box (15) are rotatably provided with the same fixed pulley, the fixed pulley is wound with a pull rope, and the two ends of the pull rope are respectively fixedly connected with the sealing plate (20) and the scraper (19).
5. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 1, characterized in that: the slag collecting box is characterized in that the same return pipe (16) is connected between the bottom of the slag collecting box (15) and the inner barrel (5), a filter cartridge (17) is fixedly mounted on the return pipe (16), and filter cotton cores are arranged in the filter cartridge (17) and the return pipe (16).
6. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 1, characterized in that: dial board (10) and be bow-shaped setting, and dial the bottom side of board (10) and contact with the arc filter plate, dial board (10) through the arc setting and can stir the impurity of clearing up on the arc filter plate to the row cinder notch.
7. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 1, characterized in that: spacing lead screw (21) is installed to shrouding (20) last screw thread, and the fixed cover in the outside of spacing lead screw (21) is equipped with anti-skidding handle cover, has seted up a plurality of spacing screws on the outer peripheral face of outer barrel (1), and spacing lead screw (21) screw thread is installed in the spacing screw that corresponds.
8. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 1, characterized in that: the bottom side of the strip-shaped plate (6) is fixedly provided with a protection box (7), and the double-shaft motor (8) is fixedly arranged in the protection box (7).
9. The environment-friendly equipment for filtering sewage from circulating water supply according to claim 3, wherein: one side of the support plate is fixedly provided with a pushing spring, one end of the pushing spring, which is far away from the support plate, is fixedly connected with the side wall of the slag collecting box (15), and the pushing spring is movably sleeved on the outer side of the guide rod (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123005063.0U CN216367002U (en) | 2021-12-02 | 2021-12-02 | Circulating water supply sewage filters environmental protection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123005063.0U CN216367002U (en) | 2021-12-02 | 2021-12-02 | Circulating water supply sewage filters environmental protection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216367002U true CN216367002U (en) | 2022-04-26 |
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ID=81222750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123005063.0U Active CN216367002U (en) | 2021-12-02 | 2021-12-02 | Circulating water supply sewage filters environmental protection equipment |
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| Country | Link |
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| CN (1) | CN216367002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117599517A (en) * | 2024-01-23 | 2024-02-27 | 扬州纪扬机械设备有限公司 | Unpowered self-cleaning filter |
-
2021
- 2021-12-02 CN CN202123005063.0U patent/CN216367002U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117599517A (en) * | 2024-01-23 | 2024-02-27 | 扬州纪扬机械设备有限公司 | Unpowered self-cleaning filter |
| CN117599517B (en) * | 2024-01-23 | 2024-03-22 | 扬州纪扬机械设备有限公司 | Unpowered self-cleaning filter |
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