CN110812919A - Backwashing device for sewage treatment equipment - Google Patents
Backwashing device for sewage treatment equipment Download PDFInfo
- Publication number
- CN110812919A CN110812919A CN201911209708.7A CN201911209708A CN110812919A CN 110812919 A CN110812919 A CN 110812919A CN 201911209708 A CN201911209708 A CN 201911209708A CN 110812919 A CN110812919 A CN 110812919A
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- China
- Prior art keywords
- valve body
- filter
- filter element
- wall
- connecting pipe
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Classifications
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- 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
- B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—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 bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
-
- 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
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
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- 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
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
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- 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
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a backwashing device for sewage treatment equipment, which relates to the field of sewage treatment equipment and comprises a filter valve body, wherein the filter valve body comprises a valve body, a filter element and a sealing cover, the filter element is inserted and arranged along the bottom opening of the valve body, the lower end of the valve body is connected with the sealing cover, and the middle part of the sealing cover is connected with a drain valve. When the drain valve is closed, sewage flows out from the inside of the filter element to the outside for filtering, the filtered water is discharged along the inner channel of the drain connecting pipe through the filter element, when the drain valve is opened, the sewage entering the filter element washes residual impurities on the inner wall of the filter element, and the sewage carrying the impurities is discharged along the drain valve, so that the effect of discharging the impurities on the inner wall of the filter element is achieved, and the filtering effect of the filter element is ensured; when pulling the end through stirring, make axostylus axostyle outer wall welded scraper to the inner wall contact of filter core, scraping, scrape remaining stubborn impurity with the filter core inner wall, discharge, effectively increase the clean effect of filter core inner wall.
Description
Technical Field
The invention relates to the field of sewage treatment equipment, in particular to a backwashing device for sewage treatment equipment.
Background
In a sewage treatment pipeline system, a filter is usually connected to a sewage pipeline in parallel, so that precipitated impurities and particle impurities such as bacteria, microorganism debris, iron rust, sand mud and the like generated by the pipeline are removed, and the human body and skin are prevented from being injured. Because the intercepted dirt stays on the filter layer, if the filter layer is not cleaned for a long time, the intercepted microorganisms can propagate in a large quantity, and the dirt is accumulated more and more, so that the secondary pollution of the filter layer is caused, and the water quality of effluent is influenced; in addition, the rotation of the scraping blade is adopted by part of the sewage pipeline flushing device to scrape residues in the inner pipeline, but the length of the scraping blade is required to be at least close to the length of the filter screen in the solution, so that the volume of the scraping blade is large, the centrifugal telescopic rotary type scraping blade is not beneficial to smooth sewage discharge of the pipeline, although the centrifugal force generated during rotation enables the scraping blade to extend out, the occupied volume of the scraping blade in the daily sewage discharge process is reduced to a part, but the length of the scraping blade is still required to be large by the design.
Disclosure of Invention
The invention aims to provide a backwashing device for sewage treatment equipment, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a back washing device for sewage treatment equipment comprises a filter valve body, wherein the filter valve body comprises a valve body, a filter element and a sealing cover, a partition plate is integrally formed on the upper portion of an inner cavity of the valve body, the inner cavity of the valve body is divided into a water inlet cavity arranged on the upper portion and a filter cavity arranged on the lower portion by the partition plate, a through hole communicated with the water inlet cavity and the filter cavity is formed in the middle of the partition plate, a water inlet connecting pipe is integrally formed on the outer wall of one side of the valve body, a water discharge connecting pipe is integrally formed on the outer wall of the other side of the valve body, the filter element is inserted and arranged along the bottom opening of the valve body and is arranged in the filter cavity, an upper port of the filter element is arranged corresponding to the through hole formed in the partition plate, a filter hole area is formed in the outer wall of the filter element, a valve body flange is arranged at the lower, the drain has been seted up at the middle part of closing cap, the drain is linked together with the lower port of filter core, there is the drain valve lower port of closing cap drain, it is equipped with hollow axostylus axostyle to run through downwards perpendicularly along the upper end of valve body and insert, the lower part setting of axostylus axostyle is inside the filter core, the axostylus axostyle is located and is provided with two parallels and the fretwork slit of being symmetrical in axostylus axostyle body of rod axis on the inside outer wall of filter core, in this, be provided with a scraper in each slit, wherein the afterbody that lies in axostylus axostyle body of rod inside on every scraper is provided with a floater, the width of this scraper is far less than the height of filter core, the upper end of axostylus axostyle is provided with the end.
Preferably, the internal channel of the water inlet connecting pipe is communicated with the water inlet cavity, the internal channel of the water discharge connecting pipe is communicated with the filter cavity, and the outer ports of the water inlet connecting pipe and the water discharge connecting pipe are respectively provided with a pipeline connecting flange.
Preferably, the upper end of the filter element is embedded on the lower surface of the partition plate, and a filter element sealing ring is arranged at the contact position of the outer wall of the upper end of the filter element and the partition plate.
Preferably, the lower end of the filter element is matched and contacted with the inner wall of the lower opening of the valve body, and a filter element sealing ring is arranged between the outer wall of the lower end of the filter element and the inner wall of the lower opening of the valve body.
Preferably, the shaft lever and the filter element are coaxially arranged, and the outer edge of the scraper is in sliding contact with the inner wall of the filter element.
Preferably, the upper end department that the axostylus axostyle runs through the valve body is equipped with the axle sleeve, and the axle sleeve inlay card sets up in the valve body, and axle sleeve inner wall and axostylus axostyle outer wall sliding contact, and the upper portion department that the axostylus axostyle runs through the valve body is provided with the axostylus axostyle sealing washer, and the outer wall setting.
The invention has the technical effects and advantages that:
1. compare in the doctor-bar of traditional at least cover filter screen height, very little that the height of the scraper in this application can be done, the cooperation is clear away the flow direction timesharing control of in-process rivers, the buoyancy of cooperation floater and the rotation of external force for clear away the operation and obtain high-efficient going on.
2. When the drain valve is closed, sewage flows out from the inside of the filter element to the outside for filtering, the filtered water is discharged along the inner channel of the drain connecting pipe through the filter element, when the drain valve is opened, the sewage entering the filter element washes residual impurities on the inner wall of the filter element, and the sewage carrying the impurities is discharged along the drain valve, so that the effect of discharging the impurities on the inner wall of the filter element is achieved, and the filtering effect of the filter element is ensured;
3. when the toggle end is turned, the scraper on the outer wall of the shaft lever contacts and scrapes the inner wall of the filter element, so that stubborn impurities remained on the inner wall of the filter element are scraped and discharged, and the cleaning effect of the inner wall of the filter element is effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a front view of the structure of the present invention.
Fig. 4 is an enlarged view of a portion a in fig. 3.
In the figure: 1. a valve body; 2. a filter element; 3. sealing the cover; 4. a partition plate; 5. a water inlet cavity; 6. a filter chamber; 7. a water inlet connecting pipe; 8. a drainage pipe connection; 9. a pipeline connecting flange; 10. a valve body flange; 11. a capping flange; 12. a filtration pore region; 13. a drain valve; 14. a shaft lever; 15. a scraper; 16. shifting the end head; 17. a filter element sealing ring; 18. a shaft sleeve; 19. a shaft lever sealing ring; 20. the rotary lug is pulled.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a back washing device for sewage treatment equipment as shown in figures 1-4, which comprises a filter valve body, wherein the filter valve body comprises a valve body 1, a filter element 2 and a sealing cover 3, a partition plate 4 is integrally formed at the upper part of an inner cavity of the valve body 1, the inner cavity of the valve body 1 is divided into an upper water inlet cavity 5 and a lower filter cavity 6 by the partition plate 4, a through hole for communicating the water inlet cavity 5 with the filter cavity 6 is formed in the middle of the partition plate 4, a water inlet connecting pipe 7 is integrally formed on the outer wall of one side of the valve body 1, a water outlet connecting pipe 8 is integrally formed on the outer wall of the other side of the valve body 1, the filter element 2 is inserted and arranged along the bottom opening of the valve body 1, the filter element 2 is arranged in the filter cavity 6, the upper port of the filter element 2 is arranged corresponding to the through hole formed in the partition plate 4, the upper part of the sealing cover 3 is provided with a sealing cover flange 11, a valve body flange 10 and the sealing cover flange 11 are fixedly connected through bolts, the lower end of the filter element 2 is tightly attached to the upper surface of the sealing cover 3, the middle part of the sealing cover 3 is provided with a sewage discharge outlet which is communicated with the lower end port of the filter element 2, the lower end port of the sewage discharge outlet of the sealing cover 3 is connected with a drain valve 13 through threads, a hollow shaft lever 14 is vertically and downwards inserted along the upper end of the valve body 1, the lower part of the shaft lever 14 is arranged inside the filter element 2, the outer wall of the shaft lever 14 inside the filter element 2 is provided with two hollowed-out slits which are parallel and symmetrical to the axis of the shaft lever 14, each slit is internally provided with a scraper 15, wherein the tail part of each scraper 15 inside the shaft lever 14 is provided with a floating ball, the width of the scraper is far smaller than the height of the filter element 2, the upper, a cross opening is arranged at the junction of the two poking and rotating lugs 20, a rubber gasket is embedded in the cross opening, and independent control valves are arranged on the water drainage connecting pipe 8 and the water inlet connecting pipe 7.
Wherein the filter core 2 is through filtrating the impurity in the sewage, and with the impurity separation in filter core 2 inside, the lower extreme of valve body 1 is equipped with valve body flange 10, the upper portion of closing cap 3 is equipped with closing cap flange 11, and valve body flange 10 and closing cap flange 11 pass through bolt fixed connection, the upper surface setting of closing cap 3 is hugged closely to the lower extreme of filter core 2, supports filter core 2, can dismantle closing cap 3 through the loose bolt of unloading to can take out and change filter core 2.
Combine fig. 2 and fig. 3 to show, the drain has been seted up at the middle part of closing cap 3, the drain is linked together with the lower port of filter core 2, there is drain valve 13 lower port of 3 drains of closing cap through threaded connection, when drain valve 13 closed, sewage is filtered by the inside outside outflow of filter core 2, and discharge along the inside passageway of drainage takeover 8 through the filter core 2 drainage, when drain valve 13 opened, the sewage that gets into filter core 2 washes the remaining impurity of 2 inner walls of filter core, and the sewage that carries impurity discharges along drain valve 13, reach the effect to 2 inner wall impurity exhaust of filter core, guarantee the filter effect of filter core 2.
As shown by combining the graph 3 and the graph 4, the upper end of the filter element 2 is embedded on the lower surface of the partition plate 4, the upper port of the filter element 2 corresponds to the through hole formed by the partition plate 4, a filter element sealing ring 17 is arranged at the contact position of the outer wall of the upper end of the filter element 2 and the partition plate 4, the lower end of the filter element 2 is matched and contacted with the inner wall of the lower opening of the valve body 1, the filter element sealing ring 17 is arranged between the outer wall of the lower end of the filter element 2 and the inner wall of the lower opening of the valve body 1, and the connection sealing performance.
Combine the upper end of the axostylus axostyle 14 that fig. 2 and fig. 3 show to be provided with and stir end 16, stir the welding on the end 16 and have a pair of commentaries on classics ear 20 of dialling, be convenient for rotate stirring end 16 and the axostylus axostyle 14 that stirs end 16 and connect, when turning over through stirring end 16, make the scraper 15 that the outer wall of axostylus axostyle 14 welded to the inner wall contact of filter core 2, the scraping, scrape the remaining stubborn impurity of filter core 2 inner wall, discharge, effectively increase the clean effect of filter core 2 inner.
As shown in fig. 3 and 4, the shaft rod 14 is sleeved with a shaft sleeve 18 at the upper end part penetrating through the valve body 1, the shaft sleeve 18 is embedded in the valve body 1 in a clamping manner, the inner wall of the shaft sleeve 18 is in sliding contact with the outer wall of the shaft rod 14 to support and guide the shaft rod 14, a shaft rod sealing ring 19 is arranged at the upper part penetrating through the valve body 1 of the shaft rod 14, the shaft rod sealing ring 19 is tightly attached to the outer wall of the shaft rod 14, and the sealing performance of the shaft rod 14 and the upper part penetrating through the.
When the sewage filter is used, as shown in fig. 3, the pipeline connecting flange 9 arranged at the outer end part of the water inlet connecting pipe 7 is connected with a sewage inlet pipeline through a bolt, the pipeline connecting flange 9 arranged at the outer end part of the water outlet connecting pipe 8 is connected with a sewage outlet pipeline through a bolt, in the implementation process of daily sewage filtering operation, sewage enters the filter element 2 from the inner channel of the water inlet connecting pipe 7 for filtering, and filtered water is discharged along the inner channel of the water outlet connecting pipe 8;
when the drainage valve 13 is closed, the sewage flows out from the inside of the filter element 2 to the outside for filtering, and the filtered water passes through the filter element 2 and is discharged along the internal channel of the drainage connecting pipe 8,
when the residue is scraped and filtered, firstly, the control valves on the water inlet connecting pipe 7 and the water outlet connecting pipe 8 are closed, the drain valve 13 is opened to almost empty and drain the water, then an external electric drill or other driving rotary interface cards are used for receiving the rubber gasket at the junction of the toggle lugs to temporarily keep the driving structure closed, then the drain valve 13 is closed, and the control valve of the water inlet connecting pipe 7 is partially opened to fill the sewage into the filter cavity 6 at a proper flow rate, the water enters the shaft lever 14 through a slit to be contacted with the floating ball and drive the floating ball and the scraper to float upwards together, the external driving mechanism is started to drive the shaft lever 14 to rotate synchronously with the filling of the water, so that the scraper and the floating ball do ascending and rotating comprehensive motion, the scraper with small volume scrapes and cleans the inner walls of the filter screens 2 at different heights, after the water reaches the highest position, closing the water inlet connecting pipe 7 again and opening the drain valve 13 to enable water flow to be discharged slowly, at the moment, the floating ball drives the scraper to descend, the scraper and the floating ball are enabled to do ascending and rotating comprehensive movement, after the floating ball reaches the bottommost part, closing the drain valve 13 again and partially opening the water inlet connecting pipe 7, repeating the operation for a plurality of periods until the filter screen is cleaned up, and keeping the drain connecting pipe 8 closed all the time in the period.
Above-mentioned clearance process is the thorough clearance of degree of depth, can go on with longer cycle, in the routine maintenance in-process, can be simple slow-speed manual rotation outside dial the ear only to long-pending debris that fall in filter core 2 bottom smash can, through pulling the end 16 when changeing promptly, make 14 outer wall welded scrapers 15 of axostylus axostyle to the inner wall contact of filter core 2, the scraping, scrape the remaining stubborn impurity of filter core 2 inner wall, discharge, effectively increase the clean effect of filter core 2 inner wall.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a back washing unit for sewage treatment device, includes the filter valve body, its characterized in that: the filter valve body comprises a valve body (1), a filter element (2) and a sealing cover (3), a partition plate (4) is integrally formed on the upper portion of an inner cavity of the valve body (1), the inner cavity of the valve body (1) is divided into a water inlet cavity (5) on the upper portion and a filter cavity (6) on the lower portion by the partition plate (4), a through hole for communicating the water inlet cavity (5) with the filter cavity (6) is formed in the middle of the partition plate (4), a water inlet connecting pipe (7) is integrally formed on the outer wall of one side of the valve body (11), a water drainage connecting pipe (8) is integrally formed on the outer wall of the other side of the valve body (1), the filter element (2) is inserted and arranged along the bottom opening of the valve body (1), the filter element (2) is arranged inside the filter cavity (6), an upper port of the filter element (2) corresponds to the through hole formed in the partition plate (4), a filter hole area (12, the upper portion of closing cap (3) is equipped with closing cap flange (11), and valve body flange (10) and closing cap flange (11) pass through bolt fixed connection, and the upper surface setting of closing cap (3) is hugged closely to the lower extreme of filter core (2), the drain has been seted up at the middle part of closing cap (3). The drain outlet is communicated with the lower port of the filter element (2), the lower port of the drain outlet of the sealing cover (3) is connected with a drain valve (13) through threads, a hollow shaft lever (14) is vertically and downwards inserted along the upper end of the valve body (1), the lower part of the shaft lever (14) is arranged inside the filter element (2), two hollowed slits which are parallel and symmetrical to the axis of the shaft lever (14) are arranged on the outer wall of the shaft lever (14) inside the filter element (2), a scraper (15) is arranged in each slit, a floating ball is arranged at the tail part of each scraper (15) inside the shaft lever (14), the width of each scraper is far smaller than the height of the filter element (2), a toggle end (16) is arranged at the upper end of the shaft lever (14), a pair of toggle lugs (20) are welded on the toggle end (16), and a cross port is arranged at the junction of the two toggle lugs (20), a rubber gasket is embedded in the cross port, and independent control valves are arranged on the drainage connecting pipe (8) and the water inlet connecting pipe (7).
2. The backwashing device for the sewage treatment apparatus as claimed in claim 1, wherein: the internal channel of the connecting pipe (7) is communicated with the water inlet cavity (5), the internal channel of the drainage connecting pipe (8) is communicated with the filter cavity (6), and the outer ports of the water inlet connecting pipe (7) and the drainage connecting pipe (8) are provided with pipeline connecting flanges (9).
3. The backwashing device for the sewage treatment apparatus as claimed in claim 1, wherein: the upper end inlay card of filter core (2) sets up the lower surface at baffle (4), and the upper end outer wall of filter core (2) is provided with filter core sealing washer (17) with the contact department of baffle (4).
4. The backwashing device for the sewage treatment apparatus as claimed in claim 1, wherein: the lower extreme of filter core (2) matches the suitable contact with the below open-ended inner wall of valve body (1), and is provided with filter core sealing washer (17) between the lower extreme outer wall of filter core (2) and valve body (1) below open-ended inner wall.
5. The backwashing device for the sewage treatment apparatus as claimed in claim 1, wherein: the shaft lever (14) and the filter element (2) are coaxially arranged, and the outer edge of the scraper (15) is in sliding contact with the inner wall of the filter element (2).
6. The backwashing device for the sewage treatment apparatus as claimed in claim 1, wherein: the upper end of the shaft rod (14) penetrating through the valve body (1) is sleeved with the shaft sleeve (18), the shaft sleeve (18) is clamped and embedded in the valve body (1), the inner wall of the shaft sleeve (18) is in sliding contact with the outer wall of the shaft rod (14), a shaft rod sealing ring (19) is arranged at the upper part of the shaft rod (14) penetrating through the valve body (1), and the shaft rod sealing ring (19) is tightly attached to the outer wall of the shaft rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209708.7A CN110812919A (en) | 2019-12-01 | 2019-12-01 | Backwashing device for sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911209708.7A CN110812919A (en) | 2019-12-01 | 2019-12-01 | Backwashing device for sewage treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110812919A true CN110812919A (en) | 2020-02-21 |
Family
ID=69542438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911209708.7A Pending CN110812919A (en) | 2019-12-01 | 2019-12-01 | Backwashing device for sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110812919A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112023480A (en) * | 2020-08-31 | 2020-12-04 | 浙江巨丰管业有限公司 | Preposed pressure-stabilizing back-flushing filter |
| CN112361053A (en) * | 2020-09-27 | 2021-02-12 | 华星澳亚控股有限公司 | Heating and ventilation filter valve capable of being cleaned in rotating mode |
| CN112628446A (en) * | 2021-01-22 | 2021-04-09 | 宁波华成阀门有限公司 | Novel self-filtering valve easy to clean |
| CN112775121A (en) * | 2021-03-10 | 2021-05-11 | 杭州菲榭尔科技有限公司 | Automatic pneumatic film governing valve of clean formula |
| CN117778148A (en) * | 2024-02-27 | 2024-03-29 | 拜森生物环保科技（上海）有限公司 | Self-cleaning intelligent biological fermentation tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112023480A (en) * | 2020-08-31 | 2020-12-04 | 浙江巨丰管业有限公司 | Preposed pressure-stabilizing back-flushing filter |
| CN112361053A (en) * | 2020-09-27 | 2021-02-12 | 华星澳亚控股有限公司 | Heating and ventilation filter valve capable of being cleaned in rotating mode |
| CN112628446A (en) * | 2021-01-22 | 2021-04-09 | 宁波华成阀门有限公司 | Novel self-filtering valve easy to clean |
| CN112775121A (en) * | 2021-03-10 | 2021-05-11 | 杭州菲榭尔科技有限公司 | Automatic pneumatic film governing valve of clean formula |
| CN117778148A (en) * | 2024-02-27 | 2024-03-29 | 拜森生物环保科技（上海）有限公司 | Self-cleaning intelligent biological fermentation tank |
| CN117778148B (en) * | 2024-02-27 | 2024-05-10 | 拜森生物环保科技（上海）有限公司 | Self-cleaning intelligent biological fermentation tank |
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