CN110604963A - Paper mill sewage filtering mechanism and treatment device - Google Patents
Paper mill sewage filtering mechanism and treatment device Download PDFInfo
- Publication number
- CN110604963A CN110604963A CN201911029637.2A CN201911029637A CN110604963A CN 110604963 A CN110604963 A CN 110604963A CN 201911029637 A CN201911029637 A CN 201911029637A CN 110604963 A CN110604963 A CN 110604963A
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- China
- Prior art keywords
- movable block
- driving
- gear
- assembly
- paper mill
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
- B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/461—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element brushes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a paper mill sewage filtering mechanism and a treatment device, and belongs to the field of paper mill sewage treatment. The filtering mechanism comprises a mounting plate and a filtering cylinder, wherein the filtering cylinder is communicated with a liquid inlet pipe, the filtering cylinder is rotatably arranged on the mounting plate through a hollow rotating column, a movable block is rotatably arranged in the filtering cylinder, a cleaning assembly is arranged on the movable block, and the movable block is connected with a telescopic assembly; the mounting panel on be equipped with drive assembly, telescopic component pass the cavity column spinner and link to each other with drive assembly. The driving assembly can drive the filter cartridge to rotate, so that the sewage in the filter cartridge can be efficiently filtered. In addition, the filter cartridge and the cleaning assembly can be driven to rotate in opposite directions by the driving assembly, and the cleaning assembly can be driven to move linearly up and down by the telescopic assembly, so that the inner wall of the filter cartridge is convenient to clean, and the problem that the filter cartridge is blocked is avoided.
Description
Technical Field
The invention relates to the field of paper mill sewage treatment, in particular to a paper mill sewage filtering mechanism and a treatment device.
Background
At present, how to treat the sewage of paper mills is a problem to be solved urgently in the paper making process.
Because the sewage of the paper mill contains more solid suspended matters and organic pollutants, when the sewage of the paper mill is treated, medicaments such as coagulant are often required to be added into the sewage, and then the sewage is filtered through a filter screen or a filter cylinder so as to achieve the aim of purifying the sewage of the paper mill.
However, the filter net or filter cartridge used in the existing paper mill sewage treatment device has problems of low filtering efficiency, easy blockage of the filter hole, and the like, so it is still required to be improved.
Disclosure of Invention
The invention aims to provide a paper mill sewage filtering mechanism to solve the technical problems in the background technology.
The embodiment of the invention is realized in such a way that the paper mill sewage filtering mechanism comprises a mounting plate and a filter cylinder, wherein the filter cylinder is communicated with a liquid inlet pipe, the filter cylinder is rotatably arranged on the mounting plate through a hollow rotating column, a movable block is rotatably arranged in the filter cylinder, a cleaning assembly for cleaning the inner wall of the filter cylinder is arranged on the movable block, and the movable block is connected with a telescopic assembly for driving the movable block to do linear motion along the axis of the movable block; the mounting panel on be equipped with and be used for driving cartridge filter and movable block to carry out pivoted drive assembly toward opposite direction, flexible subassembly pass the cavity column spinner and link to each other with drive assembly.
Preferably, the cleaning assembly comprises at least one group of brushes fixed on the movable block, and the brushes are movably attached to the inner wall of the filter cylinder.
Preferably, the telescopic assembly comprises a sliding rod, one end of the sliding rod is fixedly connected with the movable block, and the other end of the sliding rod is arranged in the rotary drum in a sliding manner; the rotary drum passes through the hollow rotary column to be connected with the driving assembly, and the rotary drum is further provided with a spiral transmission assembly which is used for driving the sliding rod to slide and has a self-locking function.
Preferably, the screw transmission assembly comprises a screw rod rotatably mounted in the drum, the screw rod is connected with a second motor, and the second motor is mounted on the drum; the sliding rod is provided with a first threaded hole matched with the screw rod, and the first threaded hole is in threaded fit with the screw rod.
Preferably, at least one group of guide blocks is fixed at one end of the slide rod, at least one group of limiting grooves matched with the guide blocks are formed in the inner wall of the rotary drum, and the guide blocks are in sliding fit with the limiting grooves.
Preferably, the driving assembly comprises a first driven gear, the first driven gear is sleeved on the hollow rotating column and is meshed with a first driving gear, the first driving gear is fixed on a transmission shaft, the transmission shaft is rotatably installed on a support, and the support is fixed on the installation plate; the transmission shaft is also connected with a first motor, and the first motor is arranged on the bracket; the transmission shaft is also connected with the rotary drum through a gear transmission assembly which is used for driving the rotary drum to rotate in the direction opposite to the direction of the hollow rotary column.
Preferably, the gear transmission assembly comprises a second driving gear, the second driving gear is fixed on the transmission shaft, the second driving gear is meshed with the direction changing gear, the direction changing gear is meshed with the second driven gear, the second driven gear is sleeved on the rotary drum, and the rotary drum and the direction changing gear are both rotatably installed on the support.
Another object of an embodiment of the present invention is to provide a paper mill sewage treatment apparatus, which includes a treatment chamber, wherein the above-mentioned filtering mechanism is detachably mounted in the treatment chamber.
Preferably, the treatment chamber on be equipped with at least a set of and set screw assorted second screw hole, set screw and mounting panel carry out threaded connection, set screw still pass the mounting panel and carry out threaded connection with the second screw hole.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following technical effects:
according to the paper mill sewage filtering mechanism provided by the embodiment of the invention, the filter cartridge is rotatably arranged on the mounting plate, so that the filter cartridge can be driven to rotate by the driving assembly, and the sewage in the filter cartridge can be efficiently filtered under the action of the centrifugal force generated by the rotation of the filter cartridge. In addition, according to the embodiment of the invention, the rotatable cleaning assembly is arranged in the filter cylinder, and the cleaning assembly is connected with the driving assembly through the telescopic assembly, so that the cleaning assembly is driven to rotate in the opposite direction through the driving assembly while the filter cylinder rotates, and the cleaning assembly is driven to do vertical linear motion through the telescopic assembly, so that the inner wall of the filter cylinder is convenient to clean, and the problem that the filter cylinder is blocked is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a paper mill sewage filtering mechanism according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a telescopic assembly according to an embodiment of the present invention.
Fig. 3 is a perspective structural view of a driving assembly according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a paper mill sewage treatment device according to an embodiment of the present invention.
In the figure: 1-mounting plate, 2-filter cartridge, 3-hollow rotary column, 4-filter hole, 5-sewage outlet, 6-valve, 7-first bearing, 8-movable block, 9-brush, 10-slide bar, 11-rotary drum, 12-liquid inlet pipe, 13-support, 14-first driven gear, 15-first driving gear, 16-a transmission shaft, 17-a first motor, 18-a second driving gear, 19-a change gear, 20-a second driven gear, 21-a second bearing, 22-a second motor, 23-a screw, 24-a first threaded hole, 25-a limiting groove, 26-a guide block, 27-a processing chamber, 28-a mounting hole, 29-a second threaded hole and 30-a fixing screw.
Detailed Description
The following specific embodiments are specifically and clearly described in the technical solutions of the present application with reference to the drawings provided in the present specification. The drawings in the specification are for clarity of presentation of the technical solutions of the present application, and do not represent shapes or sizes in actual production or use, and reference numerals of the drawings are not limited to the claims involved.
In addition, in the description of the present application, terms used should be construed broadly, and specific meanings of the terms may be understood by those skilled in the art according to actual situations. For example, the term "mounted" as may appear in the present application may be defined as a fixed mounting that is removable or a fixed mounting that is not removable, etc.; the terms "set" and "provided" may be defined as either a contact or a non-contact arrangement, etc.; the terms "connected" and "coupled" may be defined as a fixed mechanical connection such as welded, riveted, bolted, interference fit, or as a movable mechanical connection such as hinged, connected by bearings, etc.; all possible directional terms used herein are used with reference to the drawings or are defined according to actual conditions and common general knowledge.
As shown in fig. 1, which is a schematic structural diagram of a paper mill sewage filtering mechanism provided in an embodiment of the present invention, the filtering mechanism includes a mounting plate 1 and a filter cartridge 2, the filter cartridge 2 is communicated with a liquid inlet pipe 12, the filter cartridge 2 is rotatably disposed on the mounting plate 1 through a hollow rotating column 3, a movable block 8 is rotatably disposed in the filter cartridge 2, a cleaning assembly for cleaning an inner wall of the filter cartridge 2 is disposed on the movable block 8, and the movable block 8 is connected to a telescopic assembly for driving the movable block 8 to perform linear motion along an axis of the movable block 8; the mounting panel 1 on be equipped with and be used for driving cartridge filter 2 and movable block 8 to carry out pivoted drive assembly toward opposite direction, flexible subassembly pass cavity column spinner 3 and link to each other with drive assembly.
In the embodiment of the present invention, the filter cartridge 2 is rotatably mounted on the mounting plate 1, so that the filter cartridge 2 can be driven by the driving assembly to rotate, and the sewage in the filter cartridge 2 can be efficiently filtered under the centrifugal force generated by the rotation of the filter cartridge 2. In addition, in the embodiment of the invention, the rotatable cleaning assembly is arranged in the filter cylinder 2, and the cleaning assembly is connected with the driving assembly through the telescopic assembly, so that the cleaning assembly can be driven to rotate in the opposite direction through the driving assembly while the filter cylinder 2 rotates, and can be driven to move linearly up and down through the telescopic assembly, thereby being convenient for cleaning the inner wall of the filter cylinder 2 and avoiding the problem that the filter cylinder 2 is blocked.
In an embodiment of the present invention, the filter cartridge 2 may be a cylindrical structure surrounded by a filter screen, or a plurality of sets of filter holes 4 may be disposed on a side wall of the filter cartridge 2; the bottom of the filter cylinder 2 is provided with a sewage outlet 5, and a valve 6 is arranged in the sewage outlet 5; the top of the filter cartridge 2 is fixedly connected with the hollow rotating column 3 and is communicated with the hollow rotating column 3; the hollow rotary column 3 is rotatably arranged on the mounting plate 1 through a first bearing 7, a liquid inlet pipe 12 is further fixed on the mounting plate 1, the liquid inlet pipe 12 is of an L-shaped structure, and one end of the liquid inlet pipe 12 extends into the hollow rotary column 3 and is communicated with the hollow rotary column 3; in addition, the telescopic assembly may adopt available hydraulic cylinder, air cylinder, electric telescopic rod, etc. but is not limited thereto.
As shown in fig. 1, as a preferred embodiment of the present invention, the cleaning assembly includes at least one set of brushes 9 fixed on a movable block 8, and the brushes 9 are movably attached to the inner wall of the filter cartridge 2. The brush 9 can be selected for use and has a common nylon brush, and the inner wall of the filter cartridge 2 can be cleaned through the rotation or up-and-down movement of the brush 9.
As shown in fig. 1 and 2, as another preferred embodiment of the present invention, the telescopic assembly includes a sliding rod 10, one end of the sliding rod 10 is fixedly connected to the movable block 8, and the other end of the sliding rod 10 is slidably disposed in the rotating cylinder 11; the rotary drum 11 penetrates through the hollow rotary column 3 to be connected with the driving assembly, and the rotary drum 11 is further provided with a spiral transmission assembly which is used for driving the sliding rod 10 to slide and has a self-locking function. Can drive the slide bar 10 through the screw drive subassembly and slide in rotary drum 11 to can make brush 9 on the movable block 8 carry out the up-and-down motion along the inner wall of cartridge filter 2, so that carry out comprehensive clearance to the inner wall of cartridge filter 2.
As shown in fig. 2, as another preferred embodiment of the present invention, the screw transmission assembly includes a screw 23 rotatably installed in the drum 11, the screw 23 is fixedly connected to a motor shaft of a second motor 22, and the second motor 22 is installed on the drum 11; the sliding rod 10 is provided with a first threaded hole 24 matched with the screw 23, and the first threaded hole 24 is in threaded fit with the screw 23. The second motor 22 is a conventional forward and reverse rotation motor, and the slide rod 10 can stably slide in the drum 11 by driving the screw 23 to rotate by the second motor 22.
As shown in fig. 2, as another preferred embodiment of the present invention, at least one set of guide blocks 26 is fixed on one end of the slide rod 10, at least one set of limit grooves 25 matching with the guide blocks 26 is provided on the inner wall of the rotary drum 11, and the guide blocks 26 are in sliding fit with the limit grooves 25. The limit of the limit groove 25 and the guide block 26 can ensure that the sliding rod 10 can slide linearly, and can limit the sliding range of the sliding rod 10.
As shown in fig. 1 and 3, as another preferred embodiment of the present invention, the driving assembly includes a first driven gear 14, the first driven gear 14 is sleeved and fixed on the hollow rotary column 3, the first driven gear 14 is engaged with a first driving gear 15, the first driving gear 15 is fixed on a transmission shaft 16, the transmission shaft 16 is rotatably installed on a bracket 13, and the bracket 13 is fixed on the mounting plate 1; the transmission shaft 16 is also fixedly connected with a motor shaft of a first motor 17, and the first motor 17 is arranged on the bracket 13; the transmission shaft 16 is also connected with the rotary drum 11 through a gear transmission assembly for driving the rotary drum 11 to rotate in the direction opposite to the hollow rotary column 3. Can drive transmission shaft 16 through first motor 17 and rotate, transmission shaft 16's rotation can drive first driving gear 15 and rotate, and first driving gear 15's rotation can drive first driven gear 14 and rotate, and first driven gear 14's rotation alright drive cavity column spinner 3 and cartridge filter 2 and rotate to can improve cartridge filter 2 and to the filtration efficiency of sewage.
As shown in fig. 1 and 3, as another preferred embodiment of the present invention, the gear transmission assembly includes a second driving gear 18, the second driving gear 18 is fixed on the transmission shaft 16, the second driving gear 18 is engaged with a direction-changing gear 19, the direction-changing gear 19 is engaged with a second driven gear 20, the second driven gear 20 is sleeved on the drum 11, the drum 11 is rotatably mounted on the bracket 13 through a second bearing 21, and the direction-changing gear 19 is also rotatably mounted on the bracket 13. When transmission shaft 16 rotated, transmission shaft 16 can drive second driving gear 18 and rotate, and the rotation of second driving gear 18 can drive change gear 19 and rotate, and change gear 19's rotation can drive second driven gear 20 toward rotating with the opposite direction of cavity column spinner 3 to can make the brush 9 on the movable block 8 toward rotating with the opposite direction of cartridge filter 2, in order to improve the clearance effect of brush 9 and 2 inner walls of cartridge filter.
As shown in fig. 4, in an embodiment of the present invention, there is further provided a paper mill sewage treatment device, which includes a treatment chamber 27, wherein the above-mentioned filtering mechanism is detachably installed in the treatment chamber 27.
In the embodiment of the present invention, the above-described filter means is installed in the treatment chamber 27, so that the paper mill sewage in the treatment chamber 27 can be efficiently filtered by the filter means.
In one embodiment of the present invention, the top of the processing chamber 27 is provided with a mounting hole 28, through which the mounting hole 28 facilitates the insertion and installation of the filter mechanism into the processing chamber 27; in addition, the mounting plate 1 may be detachably fixed to the top of the processing chamber 27 by bolts or the like.
As shown in fig. 4, as a preferred embodiment of the present invention, at least one set of second threaded holes 29 matched with the fixing screws 30 is provided on the processing chamber 27, the fixing screws 30 are in threaded connection with the mounting plate 1, and the fixing screws 30 are also in threaded connection with the second threaded holes 29 through the mounting plate 1. The mounting plate 1 is conveniently mounted on the top of the process chamber 27 by the provision of the fixing screw 30 and the second screw hole 29.
It should be noted that the above embodiments are only specific and clear descriptions of technical solutions and technical features of the present application. However, to those skilled in the art, aspects or features that are part of the prior art or common general knowledge are not described in detail in the above embodiments.
In addition, the technical solutions of the present application are not limited to the above-described embodiments, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined, so that other embodiments that can be understood by those skilled in the art may be formed.
Claims (9)
1. The utility model provides a mill sewage filtering mechanism, includes mounting panel (1) and cartridge filter (2), cartridge filter (2) communicate with each other with feed liquor pipe (12), its characterized in that, cartridge filter (2) rotate through cavity column spinner (3) and set up on mounting panel (1), cartridge filter (2) internal rotation be provided with movable block (8), movable block (8) on be equipped with the clearance subassembly that is used for clearing up the inner wall of cartridge filter (2), movable block (8) with be used for driving movable block (8) to carry out linear motion's flexible subassembly along the axis of movable block (8) and link to each other; the mounting panel (1) on be equipped with and be used for driving cartridge filter (2) and movable block (8) to carry out pivoted drive assembly toward opposite direction, flexible subassembly pass cavity column spinner (3) and link to each other with drive assembly.
2. A paper mill sewage filtering mechanism according to claim 1, wherein said cleaning assembly comprises at least one set of brushes (9) fixed on a movable block (8), said brushes (9) being movably attached to the inner wall of the filter cartridge (2).
3. The paper mill sewage filtering mechanism according to claim 1, wherein the telescopic assembly comprises a sliding rod (10), one end of the sliding rod (10) is fixedly connected with the movable block (8), and the other end of the sliding rod (10) is slidably arranged in the rotary drum (11); the rotary drum (11) penetrates through the hollow rotary column (3) to be connected with the driving assembly, and the rotary drum (11) is further provided with a spiral transmission assembly which is used for driving the sliding rod (10) to slide and has a self-locking function.
4. A mill effluent filtering mechanism according to claim 3, wherein said screw drive assembly comprises a screw (23) rotatably mounted within the drum (11), said screw (23) being connected to a second motor (22), said second motor (22) being mounted on the drum (11); the sliding rod (10) is provided with a first threaded hole (24) matched with the screw rod (23), and the first threaded hole (24) is in threaded fit with the screw rod (23).
5. The mechanism of claim 4, wherein at least one set of guide blocks (26) is fixed on one end of the slide rod (10), at least one set of limiting grooves (25) matched with the guide blocks (26) is arranged on the inner wall of the rotary drum (11), and the guide blocks (26) are in sliding fit with the limiting grooves (25).
6. A paper mill sewage filtering mechanism according to claim 3, wherein the driving assembly comprises a first driven gear (14), the first driven gear (14) is sleeved on the hollow rotary column (3), the first driven gear (14) is meshed with a first driving gear (15), the first driving gear (15) is fixed on a transmission shaft (16), the transmission shaft (16) is rotatably installed on a bracket (13), and the bracket (13) is fixed on the installation plate (1); the transmission shaft (16) is also connected with a first motor (17), and the first motor (17) is arranged on the bracket (13); the transmission shaft (16) is also connected with the rotary drum (11) through a gear transmission assembly for driving the rotary drum (11) to rotate in the direction opposite to the direction of the hollow rotary column (3).
7. The paper mill sewage filtering mechanism according to claim 6, wherein the gear transmission assembly comprises a second driving gear (18), the second driving gear (18) is fixed on the transmission shaft (16), the second driving gear (18) is meshed with a change gear (19), the change gear (19) is meshed with a second driven gear (20), the second driven gear (20) is sleeved on the rotary drum (11), and the rotary drum (11) and the change gear (19) are both rotatably mounted on the bracket (13).
8. A paper mill effluent treatment plant comprising a treatment chamber (27), wherein the treatment chamber (27) has a filter mechanism according to any one of claims 1 to 7 removably mounted therein.
9. The paper mill sewage treatment device according to claim 8, wherein the treatment chamber (27) is provided with at least one set of second threaded holes (29) matched with the fixing screws (30), the fixing screws (30) are in threaded connection with the mounting plate (1), and the fixing screws (30) also penetrate through the mounting plate (1) to be in threaded connection with the second threaded holes (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911029637.2A CN110604963A (en) | 2019-10-28 | 2019-10-28 | Paper mill sewage filtering mechanism and treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911029637.2A CN110604963A (en) | 2019-10-28 | 2019-10-28 | Paper mill sewage filtering mechanism and treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110604963A true CN110604963A (en) | 2019-12-24 |
Family
ID=68895325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911029637.2A Withdrawn CN110604963A (en) | 2019-10-28 | 2019-10-28 | Paper mill sewage filtering mechanism and treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110604963A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054116A (en) * | 2019-12-25 | 2020-04-24 | 吴晓敏 | Guide cylinder type filtering device for wastewater treatment |
| CN112675611A (en) * | 2021-03-12 | 2021-04-20 | 寿光市人民医院 | Waste water treatment device |
| CN112707549A (en) * | 2021-01-29 | 2021-04-27 | 北部湾大学 | Effluent treatment plant for chemistry experiments |
| CN113244678A (en) * | 2021-06-18 | 2021-08-13 | 昌乐县人民医院 | Sewage treatment device |
| CN113634040A (en) * | 2021-08-10 | 2021-11-12 | 姚明峰 | Livestock-raising sewage treatment is with dragging for hair machine with supplementary extrusion structure |
| CN115199791A (en) * | 2022-09-16 | 2022-10-18 | 无棣海忠软管制造有限公司 | Valve with automatic stop and self-closing function |
| CN115212636A (en) * | 2022-08-05 | 2022-10-21 | 江苏切沃过滤技术有限公司 | Rotary adjusting type self-cleaning stainless steel filter cartridge |
-
2019
- 2019-10-28 CN CN201911029637.2A patent/CN110604963A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054116A (en) * | 2019-12-25 | 2020-04-24 | 吴晓敏 | Guide cylinder type filtering device for wastewater treatment |
| CN112707549A (en) * | 2021-01-29 | 2021-04-27 | 北部湾大学 | Effluent treatment plant for chemistry experiments |
| CN112707549B (en) * | 2021-01-29 | 2022-03-11 | 北部湾大学 | Effluent treatment plant for chemistry experiments |
| CN112675611A (en) * | 2021-03-12 | 2021-04-20 | 寿光市人民医院 | Waste water treatment device |
| CN112675611B (en) * | 2021-03-12 | 2021-05-28 | 寿光市人民医院 | Waste water treatment device |
| CN113244678A (en) * | 2021-06-18 | 2021-08-13 | 昌乐县人民医院 | Sewage treatment device |
| CN113634040A (en) * | 2021-08-10 | 2021-11-12 | 姚明峰 | Livestock-raising sewage treatment is with dragging for hair machine with supplementary extrusion structure |
| CN115212636A (en) * | 2022-08-05 | 2022-10-21 | 江苏切沃过滤技术有限公司 | Rotary adjusting type self-cleaning stainless steel filter cartridge |
| CN115212636B (en) * | 2022-08-05 | 2023-10-13 | 江苏切沃过滤技术有限公司 | Rotary adjusting self-cleaning stainless steel filter cartridge |
| CN115199791A (en) * | 2022-09-16 | 2022-10-18 | 无棣海忠软管制造有限公司 | Valve with automatic stop and self-closing function |
| CN115199791B (en) * | 2022-09-16 | 2022-12-06 | 无棣海忠软管制造有限公司 | Valve with self-stopping and self-closing functions |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191224 |
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| WW01 | Invention patent application withdrawn after publication |