CN108799562B - Dual back flushing filter valve and filtering method - Google Patents
Dual back flushing filter valve and filtering method Download PDFInfo
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- CN108799562B CN108799562B CN201810783466.1A CN201810783466A CN108799562B CN 108799562 B CN108799562 B CN 108799562B CN 201810783466 A CN201810783466 A CN 201810783466A CN 108799562 B CN108799562 B CN 108799562B
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- main filter
- valve body
- filter screen
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/087—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with spherical plug
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Filtration Of Liquid (AREA)
Abstract
本发明涉及一种双重反冲洗过滤阀及过滤方法，过滤阀包括阀体、主过滤网、副过滤网和球阀，阀体上设有进水口和出水口；主过滤网、副过滤网和球阀均安装在阀体内，且球阀分别与进水口、主过滤网和副过滤网相连接并用于主过滤网工作模式和副过滤网工作模式之间的切换；主过滤网工作模式下，从进水口进入阀体的水经主过滤网过滤后，从出水口排出或/和对副过滤网进行反冲洗；副过滤网工作模式下，从进水口进入阀体的水经副过滤网过滤后，从出水口排出或/和对主过滤网进行反冲洗。本发明的双重反冲洗过滤阀，保证了在任一个过滤网工作模式下，都能够对另一个未工作的过滤网进行反冲洗。
The present invention relates to a double backwash filter valve and a filtering method. The filter valve comprises a valve body, a main filter, an auxiliary filter and a ball valve. The valve body is provided with a water inlet and a water outlet. The main filter, the auxiliary filter and the ball valve are all installed in the valve body, and the ball valve is respectively connected to the water inlet, the main filter and the auxiliary filter and is used for switching between the main filter working mode and the auxiliary filter working mode. In the main filter working mode, water entering the valve body from the water inlet is filtered by the main filter and then discharged from the water outlet or/and backwashes the auxiliary filter. In the auxiliary filter working mode, water entering the valve body from the water inlet is filtered by the auxiliary filter and then discharged from the water outlet or/and backwashes the main filter. The double backwash filter valve of the present invention ensures that in any filter working mode, the other filter that is not working can be backwashed.
Description
Technical Field
The invention relates to the technical field of filter valves, in particular to a double back flushing filter valve and a filtering method.
Background
In a pipeline for conveying water or liquid, a filter valve is often required to be additionally arranged to filter the conveyed water body and liquid, but in the filtering process, the filter valve is easy to be blocked after the service time of the filter valve is long, so that the filter valve is required to be backwashed, and in the backwashing process, the filter valve cannot play a normal filtering function, so that the normal operation of a water conveying or liquid conveying device is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double back flushing filter valve and a filtering method aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: the double back flushing filter valve comprises a valve body, a main filter screen, an auxiliary filter screen and a ball valve, wherein a water inlet and a water outlet are formed in the valve body; the main filter screen, the auxiliary filter screen and the ball valve are all arranged in the valve body, and the ball valve is respectively connected with the water inlet, the main filter screen and the auxiliary filter screen and used for switching between a main filter screen working mode and an auxiliary filter screen working mode;
in the working mode of the main filter screen, water entering the valve body from the water inlet is filtered by the main filter screen and then is discharged from the water outlet or/and the auxiliary filter screen is backwashed;
In the working mode of the auxiliary filter screen, water entering the valve body from the water inlet is filtered by the auxiliary filter screen and then is discharged from the water outlet or/and back-washed to the main filter screen.
The beneficial effects of the invention are as follows: according to the double back flushing filter valve, the ball valve is arranged between the main filter screen and the auxiliary filter screen in the valve body, the switching between the working mode of the main filter screen and the working mode of the auxiliary filter screen can be realized through the ball valve, and the back flushing of the other filter screen which does not work can be ensured under any filter screen working mode, so that the normal operation of the filter valve can be ensured, and the back flushing of the other filter screen can be realized at the same time.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the ball valve is a two-way three-way ball valve.
The beneficial effects of adopting the further scheme are as follows: the two-way three-way ball valve is adopted, so that the installation is simple, the structure is easy to realize, and the control is convenient.
Further, the main filter screen and the auxiliary filter screen are respectively connected with a back flushing drain pipe, and the back flushing drain pipes extend to the outer side of the valve body and are connected with drain valves.
The beneficial effects of adopting the further scheme are as follows: impurities generated in the back flushing process can be discharged from the back flushing sewage pipes through the back flushing sewage pipes which are respectively connected with the main filter screen and the auxiliary filter screen.
Further, the water inlet and the water outlet are arranged coaxially.
The beneficial effects of adopting the further scheme are as follows: the water inlet and the water outlet are arranged oppositely, so that the water flow is more uniform and stable.
Further, the auxiliary filter screen is installed between the water inlet and the water outlet, and the main filter screen is installed between the auxiliary filter screen and the water inlet.
The beneficial effects of adopting the further scheme are as follows: the two filter screens are arranged side by side, so that the ball valve can be arranged at the joint of the two filter screens, and the mode conversion is facilitated.
Further, an inner partition plate is arranged in the valve body, and is positioned at one side of the main filter screen and close to the auxiliary filter screen; a water flow passage for water passing through the main filter screen is reserved between the inner partition plate and the bottom of the valve body.
The beneficial effects of adopting the further scheme are as follows: an inner baffle is arranged in the valve body, and the working mode of any filter screen can be effectively avoided from being staggered in the filtering process and the back flushing process.
Further, the valve body is obliquely arranged at one side close to the water outlet, so that an oblique water inlet and outlet channel is formed between the water flow channel and the water outlet.
The beneficial effects of adopting the further scheme are as follows: the valve body is obliquely arranged at one side close to the water outlet, so that excessive filtered water is prevented from accumulating in the valve body, and filtered water or back flushing water can flow out or back flushing as soon as possible.
Further, a transparent window for observing the main filter screen and/or the auxiliary filter screen is arranged on the valve body.
The beneficial effects of adopting the further scheme are as follows: the arrangement of the transparent window facilitates the observation of the working states of the main filter screen and the auxiliary filter screen, and facilitates the timely understanding and replacement.
Further, the water inlet and the water outlet are respectively provided with a water inlet section flange and a water outlet section flange.
The beneficial effects of adopting the further scheme are as follows: the water inlet flange and the water outlet flange are arranged to be conveniently connected with a water inlet pipeline and a water outlet pipeline.
The method for filtering by adopting the double back flushing filter valve comprises the following steps:
Rotating the two-way three-way ball valve to enable the filter valve to be in a main filter screen working mode, filtering water entering the valve body from the water inlet through the main filter screen, and discharging the filtered water from the water outlet or/and back flushing the auxiliary filter screen;
And rotating the two-way three-way ball valve to enable the filter valve to be in a working mode of the auxiliary filter screen, and discharging water entering the valve body from the water inlet through the auxiliary filter screen or/and back flushing the main filter screen from the water outlet after the water is filtered by the auxiliary filter screen.
The beneficial effects of the invention are as follows: the filtering method ensures that the other filter screen which does not work can be backwashed under any filter screen working mode, thus ensuring the normal operation of the filter valve and realizing the simultaneous backwashed of the other filter screen.
Drawings
FIG. 1 is a schematic view of the structure of the main filter of the present invention in the working mode;
FIG. 2 is a schematic view of the structure of the auxiliary filter according to the present invention in the working mode;
FIG. 3 is a schematic view of the cross-sectional structure A-A of FIG. 1;
FIG. 4 is a schematic diagram of a two-way three-way ball valve;
FIG. 5 is a front view of the secondary filter;
Fig. 6 is a side view of the secondary filter screen.
In the drawings, the list of components represented by the various numbers is as follows:
100. a valve body; 101. a water inlet; 102. a water outlet; 103. a water inlet section flange; 104. a water outlet section flange; 105. an inner partition; 106. a water flow passage; 107. a transparent window; 108. a water inlet and outlet passage;
200. A main filter screen; 300. a secondary filter screen;
400. Two-way three-way ball valve; 401. a valve handle; 402. a valve needle; 403. a first passage port; 404. a second port; 405. a third port;
500. A main backwash sewage drain pipe; 600. an auxiliary back flushing sewage drain pipe; 700. a main blow-down valve; 800. and a secondary blow-down valve.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
As shown in fig. 1 to 6, the dual backwash filter valve of the present embodiment includes a valve body 100, a main filter screen 200, an auxiliary filter screen 300 and a ball valve, wherein a water inlet 101 and a water outlet 102 are provided on the valve body 100; the main filter screen 200, the auxiliary filter screen 300 and the ball valve are all arranged in the valve body 100, and the ball valve is respectively connected with the water inlet 101, the main filter screen 200 and the auxiliary filter screen 300 and used for switching between the working modes of the main filter screen 200 and the auxiliary filter screen 300;
In the working mode of the main filter screen 200, after the water entering the valve body from the water inlet 101 is filtered by the main filter screen 200, the water is discharged from the water outlet 102 or/and the auxiliary filter screen 300 is backwashed;
in the working mode of the auxiliary filter 300, the water entering the valve body from the water inlet 101 is filtered by the auxiliary filter 300, and then is discharged from the water outlet 102 or/and backwashed from the main filter 200.
The direction of the arrow in the figure indicates the direction of the water flow.
As shown in fig. 1, when the whole filter valve is in the working mode of the main filter screen, namely, normal water supply is performed, water flows through the main filter screen through the ball valve and is filtered and then discharged, at this time, only the filtered water of the main filter screen can be discharged, and the water filtered by the main filter screen can be used for back flushing the auxiliary filter screen. The water flow direction during normal water supply is F1-ball valve-main filter screen-F2-F3, and the water flow direction of the back flushing auxiliary filter screen is F4-auxiliary filter screen (the auxiliary filter screen is a drain outlet formed on a stainless steel plate at the bottom).
As shown in fig. 2, when the whole filter valve is in the working mode of the auxiliary filter screen, the ball valve is rotated, water flows through the auxiliary filter screen through the ball valve to be filtered and then discharged, at the moment, only the filtered water of the auxiliary filter screen can be discharged, and the water filtered by the auxiliary filter screen can be used for back flushing the main filter screen. The water flow direction during normal water supply is F1- & gt ball valve- & gt auxiliary filter screen- & gt F3, and the water flow direction of the back flushing main filter screen is F3- & gt F2- & gt main filter screen.
The main filter 200 and the sub filter 300 of the present embodiment may employ existing water filtering membranes or water filtering screens. The main filter screen is in fact of cylindrical configuration and is arranged horizontally, and preferably the axis of the main filter screen coincides with the axes of both the water inlet and the water outlet.
According to the double back flushing filter valve, the ball valve is arranged between the main filter screen and the auxiliary filter screen in the valve body, the switching between the main filter screen working mode and the auxiliary filter screen working mode can be realized through the ball valve, and the back flushing of the other filter screen which does not work can be ensured in any filter screen working mode, so that the normal operation of the filter valve can be ensured, and the back flushing of the other filter screen can be realized at the same time.
Example 2
As shown in fig. 1 to 6, the dual backwash filter valve of the present embodiment includes a valve body 100, a main filter screen 200, an auxiliary filter screen 300 and a ball valve, wherein a water inlet 101 and a water outlet 102 are provided on the valve body 100; the main filter screen 200, the auxiliary filter screen 300 and the ball valve are all arranged in the valve body 100, and the ball valve is respectively connected with the water inlet 101, the main filter screen 200 and the auxiliary filter screen 300 and used for switching between the working modes of the main filter screen 200 and the auxiliary filter screen 300;
In the working mode of the main filter screen 200, after the water entering the valve body 100 from the water inlet 101 is filtered by the main filter screen 200, the water is discharged from the water outlet 102 or/and the auxiliary filter screen 300 is backwashed;
In the working mode of the auxiliary filter 300, the water entering the valve body 100 from the water inlet 101 is filtered by the auxiliary filter 300, and then is discharged from the water outlet 102 or/and backwashed from the main filter 200.
As shown in fig. 1, when the whole filter valve is in the operation mode of the main filter 200, that is, when water is normally supplied, the water flows through the main filter 200 through the ball valve and is filtered to be discharged, at this time, only the filtered discharged water of the main filter 200 may be performed, or the water filtered by the main filter 200 may be used to backwash the sub filter 300. The water flow direction during normal water supply is F1-ball valve-main filter screen-F2-F3, and the water flow direction of the back flushing auxiliary filter screen 300 is F4-auxiliary filter screen.
As shown in fig. 2, when the whole filter valve is in the working mode of the auxiliary filter 300, the ball valve is rotated, and water flows through the auxiliary filter 300 through the ball valve to be filtered and discharged, at this time, only the filtered water of the auxiliary filter 300 can be discharged, and the main filter 200 can be backwashed by using the water filtered by the auxiliary filter 300. The water flow direction during normal water supply is F1-ball valve-auxiliary filter screen-F3, and the water flow direction of the back flushing main filter screen 200 is F3-F2-main filter screen.
The main filter 200 and the sub filter 300 of the present embodiment may employ existing water filtering membranes. The main filter screen 200 is in fact of cylindrical configuration and is arranged horizontally, and it is preferred that the axis of the main filter screen 200 coincides with the axis of both the water inlet 101 and the water outlet 102.
The ball valve selected in this embodiment is a two-way three-way ball valve 400, as shown in fig. 4, and the schematic structural diagram of the two-way three-way ball valve 400 is shown in fig. 4, wherein the arrow direction in the figure is an optional flowing direction, and the downward extending portion is a ball valve pointer. The two-way three-way ball valve is adopted, so that the installation is simple, the structure is easy to realize, and the control is convenient.
In order to facilitate the smooth backwash, as shown in fig. 1-3, backwash drain pipes are respectively connected to the main filter screen 200 and the sub filter screen 300, the backwash drain pipes extend to the outside of the valve body 100 and are connected with sewage discharge pipes, and impurities generated in the backwash process can be discharged from the backwash drain pipes by respectively connecting the backwash drain pipes to the main filter screen 200 and the sub filter screen 300. Connected to the main filter screen 200 is a main backwash drain pipe 500, a main drain valve 700 is installed on the main backwash drain pipe 500, and connected to the sub-filter screen 300 is a sub-backwash drain pipe 600, and a sub-drain valve 800 is installed on the sub-backwash drain pipe 600. When the main filter screen 200 is backwashed, the main drain valve 700 on the main backwash drain pipe 500 needs to be opened, and when the sub-filter screen 300 is backwashed, the sub-drain valve 800 on the sub-backwash drain pipe 600 needs to be opened.
The lower end of the auxiliary backwash sewage draining pipe 600 of the present embodiment is connected to the lower end of the main backwash sewage draining pipe 500, that is, the sewage discharged from the main backwash sewage draining pipe 500 and the auxiliary backwash sewage draining pipe 600 finally flows out.
Specifically, as shown in fig. 1 and 2, the water inlet 101 and the water outlet 102 on the valve body of the present embodiment are coaxially arranged. The water inlet and the water outlet are arranged oppositely, so that the water flow is more uniform and stable.
As shown in fig. 1 and 2, in a preferred embodiment of the present embodiment, the sub-filter 300 is installed between the water inlet 101 and the water outlet 102, and the main filter 200 is installed between the sub-filter 300 and the water inlet 101. The two filter screens are arranged side by side, so that the ball valve can be arranged at the joint of the two filter screens, and the mode conversion is facilitated. In fact, the main filter screen 200 in the present embodiment is vertically arranged, and the sub filter screen 300 is horizontally arranged, and both are vertically arranged and connected to two passage ports of the two-way three-way ball valve 400, respectively.
As shown in fig. 1 and 2, in one embodiment of the present embodiment, an inner partition 105 is disposed in the valve body 100, and the inner partition 105 is located at one side of the main filter 200 and is disposed near the auxiliary filter 300; a water flow passage 106 for water filtered by the main filter screen 200 to pass through is reserved between the inner partition plate 105 and the bottom of the valve body 100. An inner baffle is arranged in the valve body, and the working mode of any filter screen can be effectively avoided from being staggered in the filtering process and the back flushing process. In fact, as shown in fig. 1 and 2, the inner partition 106 of the present embodiment is vertically installed in the valve body 100, and divides the inner space of the valve body 100 into a first installation cavity and a second installation cavity, the main filter screen 200 is installed in the first installation cavity, the sub-filter screen 300 is installed in the second installation cavity, the two-way three-way ball valve 400 is mostly installed in the first installation cavity and installed at the upper end of the main filter screen 200, three passage openings of the two-way three-way ball valve 400 are a first passage opening 403, a second passage opening 404 and a third passage opening 405, respectively, as shown in fig. 1, when normal water passing is performed, the first passage opening 403 is upward, the second passage opening 404 is connected with one end of the main filter screen 200, the third passage opening 405 is connected with the water inlet 101, the sub-filter screen 300 is not connected with water passing, and at this time, the sub-filter screen can be backwashed; as shown in fig. 2, when the main filter screen is backwashed, the first channel port 403 is connected to one end of the sub filter screen 300, the second channel port 404 is connected to the water inlet 101, the third channel port 405 is disposed upward, the main filter screen 200 is not backwashed from the inside, and the main filter screen 200 can be backwashed at this time. The inner partition 105 is disposed on the left side of the main filter 200 in the axial direction of the main filter 200. The lower end of the inner partition 105 is also reserved with a water flow passage 106 with the bottom of the valve body 100.
As shown in fig. 1 and 2, in a preferred embodiment of the present invention, the valve body 100 is disposed obliquely near a side of the water outlet 102, so that an oblique water inlet and outlet channel 108 is formed between the water flow channel 106 and the water outlet 102; among them, the inclination angle is most preferably 45 °. The valve body is obliquely arranged at one side close to the water outlet, so that excessive filtered water is prevented from accumulating in the valve body, and filtered water or back flushing water can flow out or back flushing as soon as possible.
As shown in fig. 3, in a preferred embodiment, the valve body 100 is provided with a transparent window 107 for observing the main filter 200 and/or the sub-filter 300. The arrangement of the transparent window facilitates the observation of the working states of the main filter screen and the auxiliary filter screen, and facilitates the timely understanding and replacement. The transparent window 107 may be bolted to the viewing port of the valve body 100 to facilitate any observation of the presence of any blockage in the primary and secondary filter screens.
As shown in fig. 1 and 2, the water inlet 101 and the water outlet 102 of the present embodiment are respectively provided with a water inlet section flange 103 and a water outlet section flange 104. The water inlet flange and the water outlet flange are arranged to be conveniently connected with a water inlet pipeline and a water outlet pipeline.
The double back flushing filter valve of the embodiment can realize the switching between the working mode of the main filter screen and the working mode of the auxiliary filter screen through the two-way three-way ball valve by arranging the two-way three-way ball valve between the main filter screen and the auxiliary filter screen in the valve body, and ensures that the other filter screen which does not work can be back flushed in any working mode of the filter screens, thus ensuring the normal operation of the filter valve and realizing back flushing of the other filter screen simultaneously.
Example 2
The method for filtering by adopting the double back flushing filter valve comprises the following steps:
Rotating the two-way three-way ball valve 400 to enable the filter valve to be in a working mode of the main filter screen 200, filtering water entering the valve body 100 from the water inlet 101 through the main filter screen 200, and discharging the filtered water from the water outlet 102 or/and back flushing the auxiliary filter screen 300;
The two-way three-way ball valve 400 is rotated to enable the filter valve to be in the working mode of the auxiliary filter screen 300, and after water entering the valve body 100 from the water inlet 101 is filtered by the auxiliary filter screen 300, the water is discharged from the water outlet 102 or/and the main filter screen 200 is backwashed.
The filtering method of the embodiment ensures that the other filter screen which does not work can be backwashed under any filter screen working mode, thus ensuring the normal operation of the filter valve and realizing the simultaneous backwashed of the other filter screen.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810783466.1A CN108799562B (en) | 2018-07-17 | 2018-07-17 | Dual back flushing filter valve and filtering method |
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| CN201810783466.1A CN108799562B (en) | 2018-07-17 | 2018-07-17 | Dual back flushing filter valve and filtering method |
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| CN108799562A CN108799562A (en) | 2018-11-13 |
| CN108799562B true CN108799562B (en) | 2024-08-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202237513U (en) * | 2011-09-01 | 2012-05-30 | 连云港市新海机械厂 | Double-drum back-flushing industrial water filter |
| CN208605673U (en) * | 2018-07-17 | 2019-03-15 | 北京华金浩环保供水设备有限公司 | A kind of dual backwashed trap valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6139727A (en) * | 1999-03-02 | 2000-10-31 | Anthony Mfg. Corp. | Self-cleaning water filter |
| CN202161860U (en) * | 2011-06-28 | 2012-03-14 | 合肥三番水处理设备有限公司 | Automatic backwash filter |
| CN204563696U (en) * | 2015-02-09 | 2015-08-19 | 江苏锐志环保设备有限公司 | The efficient faster fibres filter of automatic backwash |
| CN105126427A (en) * | 2015-09-07 | 2015-12-09 | 天津艾浮瑞特科技有限公司 | Mining full-automatic on-line continuous work backwashing high-pressure filter |
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2018
- 2018-07-17 CN CN201810783466.1A patent/CN108799562B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202237513U (en) * | 2011-09-01 | 2012-05-30 | 连云港市新海机械厂 | Double-drum back-flushing industrial water filter |
| CN208605673U (en) * | 2018-07-17 | 2019-03-15 | 北京华金浩环保供水设备有限公司 | A kind of dual backwashed trap valve |
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