CN109876500B - Self-cleaning filter - Google Patents
Self-cleaning filter Download PDFInfo
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- CN109876500B CN109876500B CN201910167011.1A CN201910167011A CN109876500B CN 109876500 B CN109876500 B CN 109876500B CN 201910167011 A CN201910167011 A CN 201910167011A CN 109876500 B CN109876500 B CN 109876500B
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- filter screen
- filter
- ring
- cleaning
- pressing
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- 238000004140 cleaning Methods 0.000 title claims abstract description 55
- 238000003825 pressing Methods 0.000 claims abstract description 90
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 19
- 239000011324 bead Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 13
- 230000007547 defect Effects 0.000 description 12
- 238000001914 filtration Methods 0.000 description 12
- 238000009434 installation Methods 0.000 description 7
- 238000004826 seaming Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of filters, and discloses a self-cleaning filter which comprises a filter component and a cleaning component in butt joint with the filter component; the filter component comprises an outer cylinder body and a filter cylinder assembly arranged in the outer cylinder body, the filter cylinder assembly comprises a net cylinder, a filter screen ring arranged on the inner wall of the net cylinder, and pressing rings respectively connected with the two ends of the net cylinder and used for respectively fixing the two ends of the filter screen ring at the two ends of the net cylinder, and the pressing rings are respectively connected with the inner wall of the outer cylinder body in a sealing fit manner; the filter screen ring is formed by rolling and splicing filter screen sheets, and an overlapped lap joint part is arranged at the splicing part, and the lap joint part of the filter screen ring is tightly pressed on the inner wall of the screen cylinder through a pressing strip connected to the filter cylinder component. The invention can improve the manufacturing and mounting quality of the filter screen ring, reduce the manufacturing cost, facilitate the replacement of the filter screen ring and improve the convenience of maintenance.
Description
Technical Field
The invention relates to the technical field of filters, in particular to a self-cleaning filter.
Background
The self-cleaning filter is a filter with a filter screen automatic cleaning function, and the structure of the conventional self-cleaning filter in the prior art comprises a filtering part and a cleaning part. The core module in the filtering part is a filtering cylinder and comprises a filtering screen ring and a net cylinder serving as a supporting piece of the filtering screen ring, wherein the cylinder wall of the net cylinder is distributed with dense holes; the filter screen rings are formed by rolling and splicing rectangular filter screen sheets, and the spliced parts of the filter screen rings are connected by welding; when the filter screen is installed, the filter screen ring is spliced on the inner wall of the net barrel, and the two ends of the filter screen ring are connected with the net barrel by welding.
The conventional self-cleaning filter has the following problems in use: the filter screen ring is required to be welded during manufacturing and installation, and the welding difficulty is high and the manufacturing cost is high under the condition that the diameter of the mesh wire of the filter screen ring is thin. For example, for a stainless steel filter screen ring with 60 meshes, the diameter of each mesh is not more than 0.17mm, and the diameter of each mesh with 120 meshes is not more than 0.09mm, because the diameter of the mesh is thin, the welding difficulty is increased, welding defects are easy to occur during welding, the rejection rate is high, and the service life is short. In addition, the conventional self-cleaning filter is inconvenient to replace the filter screen ring, and has poor maintainability.
Disclosure of Invention
In order to solve the problems, the invention provides a self-cleaning filter, which aims to improve the manufacturing and mounting quality of a filter screen ring, reduce the manufacturing cost, facilitate the replacement of the filter screen ring and improve the convenience of maintenance. The specific technical scheme is as follows:
A self-cleaning filter comprising a filter element and a cleaning element in abutment with the filter element; the filter component comprises an outer cylinder body and a filter cylinder assembly arranged in the outer cylinder body, the filter cylinder assembly comprises a net cylinder, a filter screen ring arranged on the inner wall of the net cylinder, and pressing rings respectively connected with the two ends of the net cylinder and used for respectively fixing the two ends of the filter screen ring at the two ends of the net cylinder, and the pressing rings are respectively connected with the inner wall of the outer cylinder body in a sealing fit manner; the filter screen ring is formed by rolling and splicing filter screen sheets, and an overlapped lap joint part is arranged at the splicing part, and the lap joint part of the filter screen ring is tightly pressed on the inner wall of the screen cylinder through a pressing strip connected to the filter cylinder component.
Among the above-mentioned technical scheme, the filter screen circle is formed by adopting filter screen piece coiling concatenation to adopt the layering to compress tightly overlap joint portion of concatenation department on the inner wall of net section of thick bamboo, and the both ends of filter screen circle also carry out fixed connection through the clamping ring, have following advantage with traditional filter screen circle adoption welded connection structure's mode:
Firstly, the splice of filter screen circle need not weld, but adopts the mode that the layering compresses tightly to obtain fixed connection to can overcome traditional filter screen circle and appear the drawback of welding defect easily in splice, thereby guaranteed the concatenation quality of filter screen circle.
Secondly, the joint of the two ends of the filter screen ring and the net barrel is not welded, but is fixedly connected with the net barrel in a pressing ring pressing manner, and the defect that the traditional filter screen ring is easy to have welding defects when being welded and connected with the net barrel is overcome, so that the integral quality of the filter cartridge assembly is ensured.
Thirdly, because the filter screen ring does not need to be welded during manufacturing and installation, the convenience of manufacturing, installation, maintenance and replacement is greatly improved, and the manufacturing cost is reduced.
As a preferable scheme of the lap joint structure of the filter screen ring, the lap joint of the filter screen ring adopts a seaming connection mode.
The splicing parts of the filter screen rings are connected by adopting the seaming and are pressed by the pressing strips, so that the manufacturing is convenient, and the seaming connection reliability is good.
In the invention, the pressing ring comprises an upper pressing ring connected with the upper inner wall of the outer cylinder body and a lower pressing ring connected with the lower inner wall of the outer cylinder body, the lower inner wall of the outer cylinder body is also provided with a lug, the lug is provided with a first fastening hole, the end face of the upper pressing ring of the filter cylinder assembly is provided with a second clamping hole, the lower end of the pressing strip is clamped in the first clamping hole, the upper end of the pressing strip is provided with a hook, and the head of the hook is clamped in the second clamping hole.
The two ends of the pressing strip are respectively clamped in the first clamping hole and the second clamping hole, so that the middle part of the pressing strip is pressed on the lap joint part of the filter screen ring, and the fixing mode is reliable and convenient to detach.
Preferably, the clamping connection part of the pressing strip and the first clamping hole and the second clamping hole is provided with a locking inclined plane.
Preferably, the upper end of the pressing strip is provided with a threaded hole which is convenient for the pressing strip to be detached.
According to the invention, two ends of the filter screen ring extend out of the net barrel respectively, the extending parts of the filter screen ring are sheared to form a plurality of scattered filter screen strips, the filter screen strips are turned towards the outer wall direction of the end part of the net barrel and are stuck to the outer wall of the net barrel, the pressing ring is provided with an inner spigot, and the inner spigot of the pressing ring is in press connection with the turned filter screen strips.
According to the structure, the two ends of the filter screen ring are turned and then are crimped by the pressing ring, so that the firmness of connection between the two ends of the filter screen ring and the net barrel can be improved.
Preferably, locking pins are arranged on the outer walls of the two ends of the net barrel, an L-shaped locking groove with an opening at one end is arranged on the pressing ring, and the pressing ring is connected with the L-shaped locking groove in a matched mode through the locking pins to lock the filter screen strips.
The L-shaped locking groove is provided with an inclined plane used for locking at the contact part of the locking pin.
And a gap is cut out on the turned-up filter screen strip for avoiding the locking pin.
The corresponding locking pins and the L-shaped locking grooves are arranged on the net barrel and the pressing ring, so that the reliability of connection between two ends of the filter screen ring and the net barrel is further improved.
Preferably, the number of the locking pins is 2-6, and the locking pins are uniformly distributed along the circumferential direction.
In the invention, the cleaning part comprises a shell cover in butt joint with the upper opening of the outer cylinder body and a cylinder assembly connected to the shell cover, wherein the cylinder assembly is connected with a cleaning piston which can move up and down and is used for cleaning the inner wall of the filter screen ring, the outer circle of the cleaning piston is provided with a sliding groove, the outer circle of the cleaning piston is in contact with the inner wall of the filter screen ring, and the sliding groove on the cleaning piston is matched with the pressing strip.
Preferably, the outer circle of the front end of the washing piston is provided with a taper which is convenient for the washing piston to enter the filter screen ring.
Preferably, a plurality of liquid flow holes are formed in the end face of the washing piston along the circumferential direction.
The sliding groove matched with the pressing strip is formed on the washing piston, so that the pressing strip can be used as a guide when the washing piston moves up and down, and the liquid flow hole formed in the washing piston can reduce the resistance when the washing piston moves up and down.
Preferably, the shell cover is abutted with the outer cylinder body through a quick-release connector.
In the invention, the outer circle of the pressing ring is provided with a sealing strip.
In the invention, the bottom of the outer cylinder body is provided with a liquid inlet, and the side wall of the outer cylinder body is provided with a liquid outlet. When the filter is in operation, liquid is input into the filter cylinder assembly through the liquid inlet holes and is output from the liquid outlet holes after being filtered by the filter screen ring, so that the purpose of filtration is achieved. When the filter cylinder assembly is required to be cleaned, the air cylinder assembly is started to enable the washing piston to enter the filter screen ring, and the washing piston is enabled to contact the filter screen ring in an up-and-down moving manner, so that the filter screen ring is cleaned.
The beneficial effects of the invention are as follows:
Firstly, according to the self-cleaning filter disclosed by the invention, the spliced part of the filter screen rings is not welded, but fixedly connected in a pressing strip pressing mode, so that the defect that welding defects are easy to occur at the spliced part of the traditional filter screen rings can be overcome, and the splicing quality of the filter screen rings is ensured.
Secondly, the self-cleaning filter provided by the invention has the advantages that the connection parts of the two ends of the filter screen ring and the net barrel are not welded, but are fixedly connected with the net barrel in a pressing ring pressing manner, and the defect that the traditional filter screen ring is easy to have welding defects when being welded and connected with the net barrel is overcome, so that the integral quality of the filter cartridge assembly is ensured.
Thirdly, the self-cleaning filter of the invention has the advantages that the filter screen ring is not required to be welded during manufacturing and installation, so that the convenience of manufacturing, installation, maintenance and replacement is greatly improved, and the manufacturing cost is reduced.
Fourth, according to the self-cleaning filter disclosed by the invention, the spliced parts of the filter screen rings are connected by adopting the seaming and are pressed by the pressing strips, so that the self-cleaning filter is convenient to manufacture, and the seaming connection reliability is good.
Fifth, according to the self-cleaning filter provided by the invention, the two ends of the pressing strip are respectively clamped in the first clamping hole and the second clamping hole, so that the middle part of the pressing strip is pressed on the lap joint part of the filter screen ring, and the fixing mode is reliable and convenient to detach.
Sixth, according to the self-cleaning filter provided by the invention, the two ends of the filter screen ring are turned over and then are crimped by the pressing ring, so that the firmness of connection between the two ends of the filter screen ring and the net barrel can be improved.
Seventh, according to the self-cleaning filter, the corresponding locking pins and the L-shaped locking grooves are arranged on the net barrel and the pressing ring, so that the reliability of connection between two ends of the net barrel and the net ring is further improved.
Eighth, according to the self-cleaning filter provided by the invention, the sliding groove matched with the pressing strip is formed on the washing piston, so that the pressing strip can be used as a guide when the washing piston moves up and down, and the liquid flow hole is formed in the washing piston, so that the resistance when the washing piston moves up and down can be reduced.
Drawings
FIG. 1 is a schematic view of a self-cleaning filter according to the present invention;
FIG. 2 is a schematic illustration of a snap-fit connection of a screen collar;
fig. 3 is a schematic view of a structure in which an L-shaped locking groove is provided on a pressing ring.
In the figure: 50. the filter component, 51, the outer cylinder body, 52, the filter cartridge component, 53, the net cylinder, 54, the filter screen ring, 55, the lap joint of the filter screen ring, 56, the pressing bar, 57, the upper pressing ring, 58, the lower pressing ring, 59, the lug, 60, the first fastening hole, 61, the second fastening hole, 62, the bent hook, 63, the threaded hole, 64, the filter screen strip, 65, the inner spigot of the pressing ring, 66, the locking pin, 67, the L-shaped locking groove, 68, the cleaning component, 69, the shell cover, 70, the cylinder component, 71, the washing piston, 72, the chute, 73, the liquid flow hole, 74, the quick-release connector, 75, the sealing strip, 76, the liquid inlet hole, 77 and the liquid outlet hole.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
An embodiment of a self-cleaning filter according to the invention is shown in fig. 1 to 3, comprising a filter element 50 and a cleaning element 68 in abutment with said filter element 50; the filtering component 50 comprises an outer cylinder body 51 and a filtering cylinder assembly 52 arranged in the outer cylinder body 51, the filtering cylinder assembly 52 comprises a net cylinder 53, a filtering net ring 54 arranged on the inner wall of the net cylinder 53, and pressing rings 57 and 58 respectively connected with two ends of the net cylinder 53 and used for respectively fixing two ends of the filtering net ring 54 at two ends of the net cylinder 53, and the pressing rings 57 and 58 are respectively connected with the inner wall of the outer cylinder body 51 in a sealing fit manner; the filter screen ring 54 is formed by rolling and splicing filter screen sheets, and an overlapped lap part 55 is arranged at the splicing position, and the lap part 55 of the filter screen ring is pressed on the inner wall of the screen drum 53 through a pressing strip 56 connected to the filter cartridge assembly 52.
In the above technical scheme, the filter screen ring 54 is formed by rolling and splicing filter screen sheets, and the lap joint part 55 at the spliced part is pressed on the inner wall of the screen drum 53 by the pressing bar 56, and the two ends of the filter screen ring 54 are fixedly connected by the pressing rings 57 and 58, so that compared with the traditional filter screen ring adopting a welding connection structure, the filter screen ring has the following advantages:
Firstly, the splicing position of the filter screen ring 54 is not welded, but is fixedly connected in a pressing mode by the pressing strips 56, so that the defect that the traditional filter screen ring is easy to have welding defects at the splicing position can be overcome, and the splicing quality of the filter screen ring 54 is ensured.
Secondly, the connection parts of the two ends of the filter screen ring 54 and the net drum 53 are not welded, but are fixedly connected with the net drum 53 by adopting a pressing ring 57 and 58 pressing connection mode, and the defect that the traditional filter screen ring is easy to have welding defects when being welded with the net drum is overcome, so that the integral quality of the filter cartridge assembly 52 is ensured.
Thirdly, because the filter screen ring 54 does not need to be welded during manufacturing and installation, the convenience of manufacturing, installation, maintenance and replacement is greatly improved, and the manufacturing cost is reduced.
As a preferable mode of the structure of the lap portion of the screen ring in this embodiment, the lap portion 55 of the screen ring 54 is lap-jointed by using a snap-fit connection.
The splicing part of the filter screen ring 54 adopts seaming connection and is pressed by the pressing strip 56, so that the manufacturing is convenient, and the seaming connection reliability is good.
In this embodiment, the pressing ring includes an upper pressing ring 57 connected to an upper inner wall of the outer cylinder 51, a lower pressing ring 58 connected to a lower inner wall of the outer cylinder 51, a lug 59 is further provided on the lower inner wall of the outer cylinder 51, a first fastening hole 60 is provided on the lug 59, a second fastening hole 61 is provided on an end face of the upper pressing ring 57 of the filter cartridge assembly 52, a lower end of the pressing strip 56 is fastened in the first fastening hole 60, a hook 62 is provided at an upper end of the pressing strip 56, and a head of the hook 62 is fastened in the second fastening hole 61.
The two ends of the pressing strip 56 are respectively clamped in the first clamping hole 60 and the second clamping hole 61, so that the middle part of the pressing strip 56 is pressed on the lap joint part 55 of the filter screen ring 54, and the fixing mode is reliable and convenient to detach.
Preferably, locking inclined planes are provided at the clamping positions of the pressing bar 56 and the first and second clamping holes 60, 61.
Preferably, the upper end of the pressing bar 56 is provided with a threaded hole 63 for facilitating the disassembly of the pressing bar 56.
In this embodiment, two ends of the filter screen ring 54 extend out of the net drum 53 respectively, and the extending portions of the filter screen ring 54 are cut off to form a plurality of scattered filter screen strips 64, the filter screen strips 64 are turned towards the outer wall direction of the end portion of the net drum 53 and are attached to the outer wall of the net drum 53, the press rings 57 and 58 are provided with inner rabbets 65, and the inner rabbets 65 of the press rings 57 and 58 are pressed against the turned filter screen strips 64.
The two ends of the filter screen ring 54 are turned up and then are pressed by the pressing rings 57 and 58, so that the firmness of connection between the two ends of the filter screen ring 54 and the net drum 53 can be improved.
Preferably, locking pins 66 are arranged on the outer walls of the two ends of the net drum 53, L-shaped locking grooves 67 with openings at one ends are arranged on the pressing rings 57 and 58, and the pressing rings 57 and 58 realize the locking of the filter screen bars 64 through the matching connection of the locking pins 66 and the L-shaped locking grooves 67.
Wherein, the contact part of the L-shaped locking groove 67 and the locking pin 66 is provided with an inclined plane for locking.
A recess is cut into the flanged screen band 64 for the purpose of holding the locking pin 66.
By providing corresponding locking pins 66 and L-shaped locking grooves 67 on the screen drum 53 and press rings 57, 58, the reliability of the connection of both ends of the screen ring 54 with the screen drum 53 is further improved.
Preferably, the number of the locking pins 66 is 2 to 6, and the locking pins 66 are uniformly distributed in the circumferential direction.
In this embodiment, the cleaning member 68 includes a housing cover 69 that is in butt joint with the upper opening of the outer cylinder 51, and a cylinder assembly 70 that is connected to the housing cover 69, a cleaning piston 71 that is used for cleaning the inner wall of the filter screen ring 54 and that can move up and down is connected to the cylinder assembly 70, a sliding groove 72 is formed in an outer circle of the cleaning piston 71, the outer circle of the cleaning piston 71 contacts with the inner wall of the filter screen ring 54, and the sliding groove 72 on the cleaning piston 71 is adapted to the pressing strip 56.
Preferably, the outer circle of the front end of the washing piston 71 is provided with a taper for facilitating the washing piston 71 to enter the filter screen ring 54.
Preferably, a plurality of liquid flow holes 73 are formed in the end surface of the washing piston 71 in the circumferential direction.
The sliding groove 72 adapted to the pressing bar 56 is formed on the washing piston 71, so that the pressing bar can be used as a guide when the washing piston 71 moves up and down, and the liquid flowing hole 73 is formed on the washing piston 71, so that the resistance when the washing piston 71 moves up and down can be reduced.
Preferably, the housing cover 69 is mated with the outer barrel 51 by a quick release connector 74.
In this embodiment, sealing strips 75 are disposed on the outer circles of the pressing rings 57 and 68.
In this embodiment, the bottom of the outer cylinder 51 is provided with a liquid inlet 76, and the sidewall of the outer cylinder 52 is provided with a liquid outlet 77. In operation, liquid is fed into the filter cartridge assembly 52 through the liquid inlet 76, filtered by the filter screen ring 54 and then discharged from the liquid outlet 77, thereby achieving the purpose of filtration. When the filter cartridge assembly 53 needs to be cleaned, the cylinder assembly 70 is started so that the washing piston 71 enters the filter screen ring 54 and the washing piston 71 moves up and down to contact the filter screen ring, thereby cleaning the filter screen ring.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. A self-cleaning filter comprising a filter element and a cleaning element in abutment with the filter element; the filter component comprises an outer cylinder body and a filter cylinder assembly arranged in the outer cylinder body, the filter cylinder assembly comprises a net cylinder, a filter screen ring arranged on the inner wall of the net cylinder, and pressing rings respectively connected with the two ends of the net cylinder and used for respectively fixing the two ends of the filter screen ring at the two ends of the net cylinder, and the pressing rings are respectively connected with the inner wall of the outer cylinder body in a sealing fit manner; the filter screen ring is formed by rolling and splicing filter screen sheets, and an overlapped lap part is arranged at the spliced part, and is pressed on the inner wall of the screen cylinder through a pressing strip connected to the filter cylinder component;
the pressing ring comprises an upper pressing ring connected with the upper inner wall of the outer cylinder body and a lower pressing ring connected with the lower inner wall of the outer cylinder body, a lug is further arranged on the lower inner wall of the outer cylinder body, a first fastening hole is formed in the lug, a second fastening hole is formed in the end face of the upper pressing ring of the filter cylinder assembly, the lower end of the pressing strip is clamped in the first fastening hole, a hook is arranged at the upper end of the pressing strip, and the head of the hook is clamped in the second fastening hole;
The filter screen comprises a filter screen cylinder, a filter screen ring, a pressing ring, a plurality of filter screen strips, an inner spigot and a plurality of pressing rings, wherein the two ends of the filter screen ring extend out of the filter screen cylinder respectively, the extension parts of the filter screen ring are sheared off and form a plurality of scattered filter screen strips, the filter screen strips are turned over towards the outer wall direction of the end part of the filter screen cylinder and are attached to the outer wall of the filter screen cylinder, the pressing ring is provided with the inner spigot, and the inner spigot of the pressing ring is in press connection with the turned-over filter screen strips.
2. A self-cleaning filter according to claim 1, wherein the overlap of the screen rings is by snap-fit.
3. The self-cleaning filter according to claim 1, wherein the upper end of the bead is provided with a threaded hole for facilitating the removal of the bead.
4. The self-cleaning filter according to claim 1, wherein locking pins are arranged on the outer walls of the two ends of the net barrel, an L-shaped locking groove with an opening at one end is arranged on the pressing ring, and the pressing ring is used for locking the filter screen strips through the matching connection of the locking pins and the L-shaped locking grooves.
5. The self-cleaning filter according to claim 4, wherein the number of the locking pins is 2 to 6, and the locking pins are uniformly distributed in the circumferential direction.
6. The self-cleaning filter according to claim 1, wherein the cleaning component comprises a shell cover in butt joint with the upper opening of the outer cylinder body, and a cylinder assembly connected to the shell cover, the cylinder assembly is connected with a cleaning piston capable of moving up and down and used for cleaning the inner wall of the filter screen ring, a chute is formed in the outer circle of the cleaning piston, the outer circle of the cleaning piston is in contact with the inner wall of the filter screen ring, and the chute on the cleaning piston is matched with the pressing strip.
7. The self-cleaning filter according to claim 6, wherein a plurality of liquid flow holes are formed in the end face of the washing piston in the circumferential direction.
8. The self-cleaning filter of claim 6, wherein the housing cover interfaces with the outer cartridge body via a quick release connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910167011.1A CN109876500B (en) | 2019-03-06 | 2019-03-06 | Self-cleaning filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910167011.1A CN109876500B (en) | 2019-03-06 | 2019-03-06 | Self-cleaning filter |
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| Publication Number | Publication Date |
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| CN109876500A CN109876500A (en) | 2019-06-14 |
| CN109876500B true CN109876500B (en) | 2024-05-10 |
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|---|---|---|---|
| CN201910167011.1A Active CN109876500B (en) | 2019-03-06 | 2019-03-06 | Self-cleaning filter |
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| CN104984580A (en) * | 2015-07-13 | 2015-10-21 | 江苏联峰能源装备有限公司 | Filter element |
| CN106362513A (en) * | 2015-07-21 | 2017-02-01 | 卡尔·弗罗伊登伯格公司 | Filter cartridge with welded seam |
| CN204815904U (en) * | 2015-07-23 | 2015-12-02 | 常州容和高分子材料科技有限公司 | Formula of shocking resistance Y type filter |
| CN204816882U (en) * | 2015-07-23 | 2015-12-02 | 常州容和高分子材料科技有限公司 | Y type filter for water supply system |
| CN205815243U (en) * | 2016-07-28 | 2016-12-21 | 陈程辉 | The two-way water-treated filter cylinder of simple type |
| CN206168053U (en) * | 2016-10-31 | 2017-05-17 | 河北钢铁集团矿业有限公司 | Mining water pump water absorbing purifier that dives |
| CN207253916U (en) * | 2016-11-08 | 2018-04-20 | 天津春源龙润微灌技术有限公司 | A kind of assemblnig stainless steel filter screen |
| CN106621562A (en) * | 2017-01-05 | 2017-05-10 | 洛阳双瑞金属复合材料有限公司 | Multilayer net coated type metal filter element and manufacturing method thereof |
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| CN207187244U (en) * | 2017-09-04 | 2018-04-06 | 厦门通鉴检测技术有限公司 | A kind of industrial wastewater filters detection means |
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