CN112476046A - Novel connecting piece with sealing ring for numerical control machine tool - Google Patents
Novel connecting piece with sealing ring for numerical control machine tool Download PDFInfo
- Publication number
- CN112476046A CN112476046A CN202011365636.8A CN202011365636A CN112476046A CN 112476046 A CN112476046 A CN 112476046A CN 202011365636 A CN202011365636 A CN 202011365636A CN 112476046 A CN112476046 A CN 112476046A
- Authority
- CN
- China
- Prior art keywords
- shell
- supporting block
- machine tool
- sealing ring
- scraping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 238000007790 scraping Methods 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000013016 damping Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 abstract description 8
- 239000000110 cooling liquid Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000008187 granular material Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1069—Filtration systems specially adapted for cutting liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a novel connecting piece with a sealing ring for a numerical control machine, which belongs to the technical field of numerical control machines and comprises a shell, wherein a liquid inlet pipe is arranged on one side of the shell, a liquid outlet pipe is arranged on the other side of the shell, a filtering assembly is arranged in the shell, and a scraping assembly and a driving assembly for driving the scraping assembly to move up and down are arranged on one side of the filtering assembly, which faces the liquid inlet pipe; the scraping component comprises a supporting block and a scraping blade fixed at the bottom of the supporting block through a connecting rod. In the embodiment of the invention, the scraping component is driven by the driving component to move up and down along one side of the filtering component so as to scrape off the particle sundries attached to one side of the filtering component, so that the phenomenon that the particle sundries are excessively densely accumulated in a certain area on one side of the filtering component to cause the blockage of the filtering component and influence the filtering effect of subsequent cooling liquid is avoided.
Description
Technical Field
The invention belongs to the technical field of numerical control machine tools, and particularly relates to a novel connecting piece with a sealing ring for a numerical control machine tool.
Background
The numerical control machine tool is a digital control machine tool for short, and is an automatic machine tool provided with a program control system. The control system is capable of logically processing and decoding a program defined by a control code or other symbolic instructions, represented by coded numbers, which are input to the numerical control device via the information carrier. After operation, the numerical control device sends out various control signals to control the action of the machine tool, and the parts are automatically machined according to the shape and the size required by the drawing.
At present, digit control machine tool need cooperate the coolant liquid to cool off processing cutter man-hour to the work piece, coolant liquid after using needs to be retrieved, so that reuse, because contain granule debris such as a large amount of metal piece in the coolant liquid after using, need filter granule debris during used repeatedly, among the prior art, the filtering to granule debris makes it pass the filter screen mostly, utilize the filter screen to filter granule debris, but along with the increase of filter time, the granule debris is piled up on one side of the filter screen and is increased, lead to the jam of filter screen easily, and then influence the further filtration of follow-up coolant liquid.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problem to be solved by the embodiment of the invention is to provide a novel connecting piece with a sealing ring for a numerical control machine tool.
In order to solve the technical problems, the invention provides the following technical scheme:
a novel connecting piece with a sealing ring for a numerical control machine tool comprises a shell, wherein a liquid inlet pipe is arranged on one side of the shell, a liquid outlet pipe is arranged on the other side of the shell, a filtering assembly is arranged in the shell, and a scraping assembly and a driving assembly for driving the scraping assembly to move up and down are arranged on one side, facing the liquid inlet pipe, of the filtering assembly; the scraping component comprises a supporting block and a scraping blade fixed at the bottom of the supporting block through a connecting rod, the scraping blade is attached to the side wall of the filtering component, and the supporting block is in sliding fit with the side wall of the filtering component; the driving component comprises a rotating wheel arranged at the port of the liquid inlet pipe and a plurality of arc-shaped pieces fixedly arranged on the circumferential side wall of the rotating wheel, the end part of the rotating wheel is fixedly provided with a screw rod, one end of the screw rod, which is far away from the rotating wheel, is rotationally connected with the inner wall of the shell, one end of the supporting block is provided with a clamping groove, a pressure rod is movably inserted in the clamping groove, one end of the pressure rod extends to the outside of the clamping groove and is fixedly provided with an arc-shaped plate, a second elastic piece used for supporting the pressure rod is arranged in the clamping groove, the arc-shaped inner part of the arc-shaped plate is provided with threads, the second elastic piece provides elastic supporting force for the pressure lever, so as to drive the arc-shaped plate to prop to one side of the screw rod and to be in threaded fit with the screw rod, the side wall of the pressure lever is fixedly provided with a first stop pin, the inner edge of the shell is fixedly provided with a second stop pin matched with the first stop pin, and the supporting block is connected with the inner wall of the shell through a first elastic piece.
As a further improvement of the invention: the filter assembly is a filter screen, one side of the filter screen, which faces the liquid inlet pipe, is provided with a guide rail which is vertically distributed, and one end of the support block, which is far away from the press rod, is fixedly provided with a slide block which is in sliding fit with the guide rail.
As a further improvement of the invention: the inner wall of the shell is further fixedly provided with guide rods which are vertically distributed, the guide rods vertically penetrate through the supporting blocks and are in movable fit with the supporting blocks, the first elastic piece is a spring which is wound on the outer portion of the guide rods, one end of the spring abuts against the inner wall of the shell, and the other end of the spring abuts against the upper portions of the supporting blocks.
As a further improvement of the invention: and a limiting base is fixedly arranged at the bottom of the guide rod.
As a still further improvement of the invention: the second elastic piece is a spring.
As a still further improvement of the invention: and a damping ring is embedded in the inner wall of the clamping groove.
As a still further improvement of the invention: the damping ring is made of rubber.
Compared with the prior art, the invention has the beneficial effects that:
in the embodiment of the invention, the scraping component is driven by the driving component to move up and down along one side of the filtering component so as to scrape off the particle sundries attached to one side of the filtering component, so that the phenomenon that the particle sundries are excessively densely accumulated in a certain area on one side of the filtering component to cause the blockage of the filtering component and influence the filtering effect of subsequent cooling liquid is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a novel connecting piece for a numerically-controlled machine tool with a sealing ring;
FIG. 2 is a schematic structural diagram of a sanding plate in the novel connecting piece for the numerically-controlled machine tool with a sealing ring;
FIG. 3 is an enlarged view of area A of FIG. 1;
in the figure: 1-liquid inlet pipe, 2-shell, 3-arc piece, 4-screw rod, 5-second stop pin, 6-guide rod, 7-first elastic piece, 8-guide rail, 9-filter screen, 10-liquid outlet pipe, 11-rotating wheel, 12-sliding block, 13-supporting block, 14-clamping groove, 15-second elastic piece, 16-damping ring, 17-pressure rod, 18-first stop pin, 19-arc plate, 20-limit base, 21-connecting rod and 22-scraping piece.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1-3, the embodiment provides a novel connecting piece with a sealing ring for a numerical control machine, including a housing 2, a liquid inlet pipe 1 is disposed on one side of the housing 2, a liquid outlet pipe 10 is disposed on the other side of the housing 2, a filtering assembly 9 is disposed inside the housing 2, a scraping assembly and a driving assembly for driving the scraping assembly to move up and down are disposed on one side of the filtering assembly 9 facing the liquid inlet pipe 1, specifically, the scraping assembly includes a supporting block 13 and a scraping blade 22 fixed at the bottom of the supporting block 13 through a connecting rod 21, the scraping blade 22 is attached to a side wall of the filtering assembly 9, the supporting block 13 is in sliding fit with the side wall of the filtering assembly 9, the driving assembly includes a rotating wheel 11 disposed at a port of the liquid inlet pipe 1 and a plurality of arc-shaped pieces 3 fixedly disposed on a circumferential side wall of the rotating wheel 11, the end, far away from the rotating wheel 11, of the screw rod 4 is rotatably connected with the inner wall of the shell 2, one end of the supporting block 13 is provided with a clamping groove 14, a pressing rod 17 is movably inserted in the clamping groove 14, one end of the pressing rod 17 extends to the outside of the clamping groove 14 and is fixedly provided with an arc-shaped plate 19, a second elastic part 15 used for supporting the pressing rod 17 is arranged in the clamping groove 14, threads are formed in the arc-shaped part of the arc-shaped plate 19, the second elastic part 15 provides elastic supporting force for the pressing rod 17 so as to drive the arc-shaped plate 19 to be supported to one side of the screw rod 4 and be in threaded fit with the screw rod 4, a first stop pin 18 is fixedly arranged on the side wall of the pressing rod 17, a second stop pin 5 matched with the first stop pin 18 is fixedly arranged at the edge of the inside of the shell.
When the cooling liquid is recycled, the cooling liquid can be pumped into the shell 2 from the liquid inlet pipe 1, when the cooling liquid is output from the port of the liquid inlet pipe 1, the arc-shaped sheet 3 can be pushed to drive the rotating wheel 11 to rotate, and further the screw rod 4 is driven to rotate, because the second elastic part 15 provides elastic supporting force for the pressing rod 17, the arc-shaped sheet 19 is abutted against one side of the screw rod 4 and is in threaded fit with the screw rod 4, when the rotating wheel 11 drives the screw rod 4 to rotate, the functional arc-shaped sheet 19 can be moved upwards, and further the pressing rod 17, the first stop pin 18, the supporting block 13 and the scraping blade 22 are driven to move upwards, one side of the filtering component 9 is scraped by the scraping blade 22, particle sundries attached to one side of the filtering component 9 are scraped, and the filtering component 9 is prevented from being blocked by; along with the upward movement of the arc-shaped plate 19, the first elastic part 7 is compressed, when the first stop pin 18 touches one side of the bottom of the second stop pin 5, the first stop pin 18 can drive the press rod 17 to move towards the inside of the clamping groove 14, so that the arc-shaped plate 19 is separated from the screw rod 4, at this time, under the action of the first elastic part 7, the supporting block 13 drives the scraping blade 22, the press rod 17 and the arc-shaped plate 19 to move downwards, until the arc-shaped plate moves to a certain position, the second elastic part 15 drives the arc-shaped plate 19 to abut against one side of the screw rod 4 again, so that the arc-shaped plate 19 is in threaded fit with the screw rod 4 again, the arc-shaped plate 19 moves upwards again, and the reciprocating movement is carried out, and the vertical reciprocating movement of the three scraping blades 22 is carried out, so as to.
Specifically, the filtering component 9 is a filter screen, one side of the filter screen facing the liquid inlet pipe 1 is provided with a guide rail 8 which is vertically distributed, and one end of the supporting block 13 far away from the pressing rod 17 is fixedly provided with a sliding block 12 which is in sliding fit with the guide rail 8.
Through the sliding fit between the sliding block 12 and the guide rail 8, the supporting block 13 can slide up and down stably along one side of the filter screen, and the scraping effect of the scraping blade 22 is improved.
Furthermore, the inner wall of the shell 2 is also fixedly provided with a guide rod 6 which is vertically distributed, the guide rod 6 vertically penetrates through the supporting block 13 and is movably matched with the supporting block 13, the first elastic piece 7 is a spring which is wound on the outer portion of the guide rod 6, one end of the spring abuts against the inner wall of the shell 2, and the other end of the spring abuts against the upper portion of the supporting block 13.
Through the setting of guide bar 6, can further provide the direction to the removal of supporting shoe 13, guarantee that the removal of supporting shoe 13 is more steady.
Furthermore, a limiting base 20 is fixedly arranged at the bottom of the guide rod 6, and the descending position of the supporting block 13 can be limited by the arrangement of the limiting base 20.
Specifically, the second elastic member 15 is a spring.
In this embodiment, the joints of the liquid inlet pipe 1 and the liquid outlet pipe 10 with the casing 2 are provided with sealing rings (not shown).
Example 2
Referring to fig. 3, in this embodiment, compared with embodiment 1, in the novel connecting member for a numerical control machine tool with a sealing ring, a damping ring 16 is embedded in the inner wall of the clamping groove 14, and a friction damping effect can be formed between the damping ring 16 and the pressing rod 17, so that when the pressing rod 17 moves towards the inside of the clamping groove 14 and the supporting block 13 drives the arc plate 19 to move downwards, the arc plate 19 is not immediately attached to the screw rod 4, which causes the arc plate 19 to move downwards smoothly, and further affects normal scraping of the scraping blade 22 on particle impurities.
Specifically, the damping ring 16 is made of rubber.
In the embodiment of the invention, the driving assembly drives the scraping assembly to move up and down along one side of the filtering assembly 9 so as to scrape off the particle sundries attached to one side of the filtering assembly 9, so that the phenomenon that the particle sundries are excessively densely accumulated in a certain area on one side of the filtering assembly 9 to further cause the blockage of the filtering assembly 9 and influence the filtering effect of subsequent cooling liquid is avoided, compared with the prior art, the automatic cleaning device can automatically clean the filtering assembly 9, and has the advantages of good filtering effect and strong sustainability.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The novel connecting piece with the sealing ring for the numerical control machine tool is characterized by comprising a shell (2), wherein a liquid inlet pipe (1) is arranged on one side of the shell (2), a liquid outlet pipe (10) is arranged on the other side of the shell, a filtering assembly (9) is arranged in the shell (2), and a scraping assembly and a driving assembly for driving the scraping assembly to move up and down are arranged on one side, facing the liquid inlet pipe (1), of the filtering assembly (9);
the scraping component comprises a supporting block (13) and a scraping blade (22) fixed at the bottom of the supporting block (13) through a connecting rod (21), the scraping blade (22) is attached to the side wall of the filtering component (9), and the supporting block (13) is in sliding fit with the side wall of the filtering component (9);
the driving assembly comprises a rotating wheel (11) arranged at the port of the liquid inlet pipe (1) and a plurality of arc-shaped sheets (3) fixedly arranged on the circumferential side wall of the rotating wheel (11), a screw rod (4) is fixedly arranged at the end part of the rotating wheel (11), one end, far away from the rotating wheel (11), of the screw rod (4) is rotatably connected with the inner wall of the shell (2), a clamping groove (14) is formed in one end of the supporting block (13), a pressing rod (17) is movably inserted in the clamping groove (14), one end of the pressing rod (17) extends to the outside of the clamping groove (14) and is fixedly provided with an arc-shaped plate (19), a second elastic piece (15) used for supporting the pressing rod (17) is arranged in the clamping groove (14), a thread is formed in the arc-shaped portion of the arc-shaped plate (19), the second elastic piece (15) provides elastic supporting force for the pressing rod (17) so as to drive the arc-shaped plate (19), the side wall of the pressure lever (17) is fixedly provided with a first stop pin (18), the inner edge of the shell (2) is fixedly provided with a second stop pin (5) matched with the first stop pin (18), and the supporting block (13) is connected with the inner wall of the shell (2) through a first elastic piece (7).
2. The novel connecting piece with the sealing ring for the numerical control machine tool is characterized in that the filtering component (9) is a filter screen, one side of the filter screen facing the liquid inlet pipe (1) is provided with a guide rail (8) which is vertically distributed, and one end of the supporting block (13) far away from the pressing rod (17) is fixedly provided with a sliding block (12) which is in sliding fit with the guide rail (8).
3. The novel connecting piece with the sealing ring for the numerical control machine tool is characterized in that a guide rod (6) which is vertically distributed is fixedly arranged on the inner wall of the shell (2), the guide rod (6) vertically penetrates through the supporting block (13) and is movably matched with the supporting block (13), the first elastic piece (7) is a spring which is wound on the outer portion of the guide rod (6), one end of the spring abuts against the inner wall of the shell (2), and the other end of the spring abuts against the upper portion of the supporting block (13).
4. The new connecting piece with sealing ring for NC machine tool according to claim 3 is characterized in that the bottom of the guide rod (6) is fixedly provided with a limit base (20).
5. The new connecting piece with sealing ring for NC machine tool according to any of claims 1-4 characterized in that the second elastic piece (15) is a spring.
6. The new connecting piece with sealing ring for NC machine tool as claimed in claim 1, wherein the damping ring (16) is embedded in the inner wall of the slot (14).
7. The new connecting piece with sealing ring for NC machine tool according to claim 6 is characterized in that the damping ring (16) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365636.8A CN112476046A (en) | 2020-11-28 | 2020-11-28 | Novel connecting piece with sealing ring for numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011365636.8A CN112476046A (en) | 2020-11-28 | 2020-11-28 | Novel connecting piece with sealing ring for numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112476046A true CN112476046A (en) | 2021-03-12 |
Family
ID=74936820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011365636.8A Pending CN112476046A (en) | 2020-11-28 | 2020-11-28 | Novel connecting piece with sealing ring for numerical control machine tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN112476046A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951589A (en) * | 2017-12-20 | 2019-06-28 | 广东欧珀移动通信有限公司 | The control method of functional unit, electronic device and electronic device |
| CN110124774A (en) * | 2018-02-08 | 2019-08-16 | 李雅兰 | A kind of middle Officinal multifunctional is pounded medicine in a mortar equipment |
| CN110152377A (en) * | 2019-05-06 | 2019-08-23 | 湖南溢泰净水科技有限公司 | A kind of chemical plant wastewater filtration treatment device |
| CN209438171U (en) * | 2018-12-24 | 2019-09-27 | 滨海县永达机械有限公司 | A kind of high-precision valve castings |
| CN111173941A (en) * | 2020-01-08 | 2020-05-19 | 陈志勇 | Valve with sewage filtering function and filtering method thereof |
| CN211158767U (en) * | 2019-09-24 | 2020-08-04 | 于丽明 | Filter equipment for sludge treatment |
-
2020
- 2020-11-28 CN CN202011365636.8A patent/CN112476046A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951589A (en) * | 2017-12-20 | 2019-06-28 | 广东欧珀移动通信有限公司 | The control method of functional unit, electronic device and electronic device |
| CN110124774A (en) * | 2018-02-08 | 2019-08-16 | 李雅兰 | A kind of middle Officinal multifunctional is pounded medicine in a mortar equipment |
| CN209438171U (en) * | 2018-12-24 | 2019-09-27 | 滨海县永达机械有限公司 | A kind of high-precision valve castings |
| CN110152377A (en) * | 2019-05-06 | 2019-08-23 | 湖南溢泰净水科技有限公司 | A kind of chemical plant wastewater filtration treatment device |
| CN211158767U (en) * | 2019-09-24 | 2020-08-04 | 于丽明 | Filter equipment for sludge treatment |
| CN111173941A (en) * | 2020-01-08 | 2020-05-19 | 陈志勇 | Valve with sewage filtering function and filtering method thereof |
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