CN115155149A - Synchronous filtering and back flushing device - Google Patents

Synchronous filtering and back flushing device Download PDF

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Publication number
CN115155149A
CN115155149A CN202210580611.2A CN202210580611A CN115155149A CN 115155149 A CN115155149 A CN 115155149A CN 202210580611 A CN202210580611 A CN 202210580611A CN 115155149 A CN115155149 A CN 115155149A
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China
Prior art keywords
filter
pipe
water inlet
flushing
switch
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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.)
Withdrawn
Application number
CN202210580611.2A
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Chinese (zh)
Inventor
陈德和
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Universal PCB Equipment Co Ltd
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Universal PCB Equipment Co Ltd
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Application filed by Universal PCB Equipment Co Ltd filed Critical Universal PCB Equipment Co Ltd
Priority to CN202210580611.2A priority Critical patent/CN115155149A/en
Publication of CN115155149A publication Critical patent/CN115155149A/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D35/00Filtering 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
    • B01D35/12Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62Regenerating the filter material in the filter
    • B01D29/66Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2221/00Applications of separation devices
    • B01D2221/14Separation devices for workshops, car or semiconductor industry, e.g. for separating chips and other machining residues

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to a synchronous filtering and backwashing device, which comprises: the filter comprises a first filter, a second filter, a water inlet pipe, a water discharge pipe, a first flushing pipe and a second flushing pipe, wherein the first flushing pipe and the second flushing pipe are used for flushing a filter element in the filter; the water inlet ends of the first filter and the second filter are respectively connected with a first switch and a second switch, and the flushing ends of the first filter and the second filter are respectively connected with a third switch and a fourth switch. The synchronous filtering and backwashing device can realize backwashing on the filter by arranging the first flushing pipe and the second flushing pipe, prolong the service life of the filter and save filter element consumables; and through setting up first, second, third and fourth switch, can make first filter utilize the water pressure of drain pipe to carry out the back flush to first filter when the second filter filters, because utilize the power supply of filtration work to carry out the back flush in step, not only make filtration and back flush not influence each other, still can reduce the energy consumption that the back flush needs.

Description

Synchronous filtering and back flushing device
Technical Field
The invention relates to the technical field of filtration treatment, in particular to a synchronous filtration and backwashing device.
Background
After image transfer (3 processes of inner layer circuit, outer layer circuit and solder mask), the printed circuit board needs to be developed to remove the ink or dry film which is not irradiated by the UV ultraviolet rays, and the following problems are prominent in the process and become a headache problem in the industry:
the unexposed ink or dry film is removed with developer solution during the development process, which chemically reacts. Particularly, the solder mask ink comprises resin, a diluent, a filler, a colorant, a hardening agent and the like, after the solder mask ink reacts with liquid medicine, the liquid medicine solution contains solid particle impurities and oily substances, and the substances are difficult to be completely filtered out through a spraying and filtering system, so that the substances are reversely adhered to the surface of a production plate, the quality is poor due to the fact that the substances are brought to a subsequent process, and the product reject ratio is high; in the continuous plate making process, although fresh liquid medicine is quantitatively supplemented and added, continuous solid particle impurities are suspended in the solution and precipitated in the developing tank, so that the activity of the liquid medicine in a certain time is insufficient, the plate making quality is seriously affected, the liquid medicine in the whole tank needs to be discharged at regular time, and then the fresh liquid medicine is replaced. And each time maintenance and discharge is carried out, certain time is consumed, and the working efficiency is influenced.
Therefore, in the plate making process, the spraying system is provided with the filter, and the internal cotton cores filter overflowing liquid medicine to ensure the cleanliness of the liquid medicine sprayed to the plate surface, so that the plate making quality requirement is met. However, after the filter cotton core is used for a certain time, impurities and oil stains attached in the filter cotton core are saturated, the flow rate of overflowing in unit area is reduced, the spraying pressure is influenced, all the cotton cores must be replaced at intervals, and the consumption of the cotton cores is large and the cost is high.
Disclosure of Invention
The invention aims to provide a synchronous filtering and backwashing device, and aims to solve the technical problems of short service life and high consumption speed of a filter element of a filter.
In order to achieve the above object, the present invention provides a synchronous filtration and backwashing device, including: the water inlet end of the first filter and the water inlet end of the second filter are connected with the water inlet pipe, and the water outlet end of the first filter and the water outlet end of the second filter are connected with the water outlet pipe;
the filter is characterized by further comprising a first flushing pipe and a second flushing pipe, wherein one end of the first flushing pipe is connected with the flushing end of the first filter, the other end of the first flushing pipe is connected with the water discharging pipe, one end of the second flushing pipe is connected with the flushing end of the second filter, the other end of the second flushing pipe is connected with the water discharging pipe, and the first flushing pipe and the second flushing pipe are used for flushing a filter element in the filter;
the water inlet ends of the first filter and the second filter are respectively connected with a first switch and a second switch, and the flushing ends of the first filter and the second filter are respectively connected with a third switch and a fourth switch.
As a further improvement of the invention: the filter also comprises a first water inlet branch flow pipe, a second water inlet branch flow pipe, a first water discharge branch flow pipe and a second water discharge branch flow pipe, wherein one end of the first water inlet branch flow pipe is connected with the water inlet end of the first filter, and the other end of the first water inlet branch flow pipe is connected with the water inlet pipe through the first switch; one end of the second water inlet branch pipe is connected with the water inlet end of the second filter, the other end of the second water inlet branch pipe is connected with the water inlet pipe through the second switch, and the first water inlet branch pipe and the second water inlet branch pipe are connected in parallel; one end of the first drainage branch pipe is connected with the drainage end of the first filter, and the other end of the first drainage branch pipe is connected with the drainage pipe; one end of the second drainage branch flow pipe is connected with the drainage end of the second filter, the other end of the second drainage branch flow pipe is connected with the drainage pipe, and the first drainage branch flow pipe and the second drainage branch flow pipe are connected in parallel.
As a further improvement of the invention: the first switch comprises a first fill valve, the second switch comprises a second fill valve, the third switch comprises a first backwash valve, and the fourth switch comprises a second backwash valve.
As a further improvement of the invention: the water inlet pipe is connected with a filter pump, and the first flushing pipe is sequentially connected with a back flushing pump and a medicine storage tank.
As a further improvement of the invention: the filter is characterized by further comprising a sewage draining pipe and a sewage draining cylinder, wherein the top of the first filter and the top of the second filter are provided with sewage draining ports, one end of the sewage draining pipe is connected with the sewage draining ports, and the other end of the sewage draining pipe is connected with the sewage draining cylinder.
As a further improvement of the invention: the first filter, the second filter all is provided with the cylinder body, a plurality of filter cores of fixedly connected with in the cylinder body.
As a further improvement of the invention: a filter through hole is formed in the core body of the filter element and is communicated with the water inlet end; and a filter cavity and a water outlet are arranged in the filter element, and the filter cavity is communicated with the drainage end through the water outlet.
As a further improvement of the invention: the bottom in the cylinder body is provided with a precipitation tank, and the bottom of the cylinder body is provided with a precipitate blowoff valve.
As a further improvement of the invention: the filter cartridge includes a metal sintered cartridge.
As a further improvement of the invention: the water inlet pipe is connected with the water outlet of the cleaning equipment.
According to the synchronous filtering and backwashing device in the technical scheme, the first flushing pipe and the second flushing pipe for flushing the filter element are respectively arranged on the first filter and the second filter, so that backwashing on the filters can be realized, the service life of the filters is prolonged, and the consumable materials of the filter elements are saved; when the first filter filters, the second switch and the third switch are closed, and the fourth switch is turned on, so that the second filter can be backwashed by using the water pressure of the drain pipe; when the second filter filters, the first switch and the fourth switch are closed, and the second switch and the third switch are conducted, so that the first filter can carry out back flushing on the first filter by utilizing the water pressure of the drain pipe.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the synchronous filtration and backwash assembly of the present application;
FIG. 2 is a schematic diagram of a filtering operation of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a backwash operation according to an embodiment of the present application;
FIG. 4 is a schematic view of an embodiment of the synchronous filtering and backwashing apparatus according to the present invention.
The reference numbers illustrate:
reference numerals Name(s) Reference numerals Name(s)
1 Developing machine 2 Medicine storage cylinder
3 Back washing pump 4 Filter pump
5 Filtering element 6 Sewage draining cylinder
7 Blowoff valve 8 First water inlet valve
9 Sediment blow-off valve 10 Drain valve
11 Drainage end 31 First back flush valve
32 Flushing end 33 Second back flushing valve
81 Second water inlet valve 53 First flushing pipe
51 Water inlet pipe 52 Drain pipe
54 Second flushing pipe 55 Blow-off pipe
91 Cylinder body 92 Settling tank
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention mainly aims to provide a synchronous filtering and backwashing device, and aims to solve the technical problems of short service life and high consumption speed of a filter element of a filter.
Referring to fig. 1-4, in an embodiment of the present application, the synchronous filtering and backwashing device includes: the water purifier comprises a first filter, a second filter, a water inlet pipe 51 and a water outlet pipe 52, wherein the first filter and the second filter are respectively provided with a water inlet end 81, a water outlet end 11 and a flushing end 32, the water inlet ends 81 of the first filter and the second filter are respectively connected with the water inlet pipe 51, and the water outlet ends 11 of the first filter and the second filter are respectively connected with the water outlet pipe 52;
the filter further comprises a first flushing pipe 53 and a second flushing pipe 54, one end of the first flushing pipe 53 is connected with the flushing end 32 of the first filter, the other end of the first flushing pipe 53 is connected with the drain pipe 52, one end of the second flushing pipe 54 is connected with the flushing end 32 of the second filter, the other end of the second flushing pipe 54 is connected with the drain pipe 52, and the first flushing pipe 53 and the second flushing pipe 54 are used for flushing a filter element in the filter;
the water inlet ends of the first filter and the second filter are respectively connected with a first switch and a second switch, and the flushing ends of the first filter and the second filter are respectively connected with a third switch and a fourth switch.
In this embodiment, this washing unit is used for filtering and purifies the developer solution of developing machine, makes water cyclic utilization. Through backwashing the filter element of the filter, membrane broken impurities and oil stains can be separated from the filter element, so that the service life of the filter element is prolonged, the maintenance period of the filter element is prolonged, the material consumption of the filter element is saved, and the treatment cost of dangerous waste solid filter elements is reduced; by recycling the liquid medicine, the utilization rate of the liquid medicine can be improved, and the wastewater discharge and sewage treatment cost can be reduced; through filtering and purifying liquid medicine, the board face foreign matter is anti-sticky when reducing PCB board production then, improves the yield and the quality of PCB board product.
According to the synchronous filtering and backwashing device, the first flushing pipe and the second flushing pipe for flushing the filter element are respectively arranged on the first filter and the second filter, so that backwashing on the filters can be realized, the service life of the filters is prolonged, and the consumable of the filter elements is saved; when the first filter filters, the second switch and the third switch are closed, and the fourth switch is turned on, so that the second filter can be backwashed by using the water pressure of the drain pipe; when the second filter filters, the first switch and the fourth switch are closed, and the second switch and the third switch are conducted, so that the first filter can carry out back flushing on the first filter by utilizing the water pressure of the drain pipe.
Furthermore, the synchronous filtering and backwashing device also comprises a first water inlet branch flow pipe, a second water inlet branch flow pipe, a first water discharge branch flow pipe and a second water discharge branch flow pipe, wherein one end of the first water inlet branch flow pipe is connected with the water inlet end of the first filter, and the other end of the first water inlet branch flow pipe is connected with the water inlet pipe through the first switch; one end of the second water inlet branch pipe is connected with the water inlet end of the second filter, the other end of the second water inlet branch pipe is connected with the water inlet pipe through the second switch, and the first water inlet branch pipe and the second water inlet branch pipe are connected in parallel; one end of the first drainage branch pipe is connected with the drainage end of the first filter, and the other end of the first drainage branch pipe is connected with the drainage pipe; one end of the second drainage branch pipe is connected with the drainage end of the second filter, the other end of the second drainage branch pipe is connected with the drainage pipe, and the first drainage branch pipe and the second drainage branch pipe are connected in parallel.
In this embodiment, the one end of first inlet lateral flow pipe is through first switch and advance water piping connection, the one end of second inlet lateral flow pipe is through second switch and advance water piping connection, and first inlet lateral flow pipe and the parallelly connected setting of second inlet lateral flow pipe, thereby the first switch of accessible system control switches on and closes with the second switch, the realization is to the independent control of first inlet lateral flow pipe and first inlet lateral flow pipe, and the independent control of intaking to first filter, second filter. It can be understood that the flushing ends of the first filter and the second filter are respectively connected with the third switch and the fourth switch, so that the first filter and the second filter can be independently controlled for backwashing by controlling the on and off of the third switch and the fourth switch.
Further, the first switch comprises a first feed valve 8, the second switch comprises a second feed valve 81, the third switch comprises a first backwash valve 31, and the fourth switch comprises a second backwash valve 33. In the present embodiment, electrically operated valves are used for the first water inlet valve 8, the second water inlet valve 81, the first back-flushing valve 31, and the second back-flushing valve 33.
Further, the water inlet pipe 51 is connected with a filter pump 4, and the first flushing pipe 53 is sequentially connected with a back flushing pump 3 and a medicine storage tank 2. In order to realize filtration, the liquid medicine flows from the developing machine 1 to the filtering and flushing device, in the embodiment, a filter pump 4 is arranged on the water inlet pipe 51 to provide a filtering power source; the medicine storage tank 2 and the back-flushing pump 3 are arranged at the front ends of the first flushing pipe 53 and the second flushing pipe 54, the medicine storage tank 2 is used for storing medicine water, and the back-flushing pump 3 is used for pumping the medicine water in the medicine storage tank 2 to the filter.
Further, the synchronous filtering and backwashing device further comprises a drain pipe 55 and a drain cylinder 6, wherein drain ports are formed in the tops of the first filter and the second filter, one end of the drain pipe 55 is connected with the drain ports, and the other end of the drain pipe 55 is connected with the drain cylinder 6. The blow-off pipe 55 is provided with a blow-off valve 7, and the blow-off valve 7 is used for opening a blow-off port and discharging oil dirt with low density flushed in the filter into the blow-off cylinder 6.
Further, the first filter and the second filter are both provided with a cylinder 91, and a plurality of filter elements 5 are fixedly connected in the cylinder 91. Specifically, the filtering core 5 is a metal sintered filter core.
In this embodiment, the filter is provided with a plurality of built-in filter elements 5, and the filter elements 5 are made of special stainless steel sintered filter elements, so that the outer surface of the filter elements 5 is smooth, the filter elements can filter impurities on the outer surface of the filter elements, the surface of the filter elements can be washed by the liquid medicine, and the filter elements 5 can be repeatedly used by washing.
Furthermore, a core body of the filter element 5 is provided with a filter through hole, and the filter through hole is communicated with the water inlet end 81; and a filtering cavity and a water outlet are arranged in the filtering filter element 5, and the filtering cavity is communicated with the drainage end 11 through the water outlet.
In this embodiment, filter the through-hole and be used for passing through liquid medicine, make the impurity that liquid medicine mix with filter the surface at filter core 5. The filtered liquid medicine flows to the drainage end from the inside of the filter cavity, and finally returns to the developing machine again.
Further, a settling tank 92 is arranged at the bottom inside the cylinder body 91, and a sediment drain valve 9 is arranged at the bottom of the cylinder body.
After the back washing is finished, impurities separated from the liquid medicine are slowly precipitated to the bottom of the filter, and a part of oil stains with lighter density exist in the tank. The upper part of the filter is composed of independent 9 parts, the lower part of the filter is an integrally communicated structure, and the impurity sediment in the cylinder body 91 is accumulated to a certain degree and can be discharged by opening the sediment blowdown valve 9 at the bottom of the filter.
Further, the synchronous filtering and backwashing device further comprises a cleaning device, one end of the water discharge pipe 52 is connected with a water inlet of the cleaning device, and one end of the water inlet pipe 51 is connected with a water outlet of the cleaning device. In this embodiment, the cleaning apparatus is the developing machine 1, and the synchronous filtering and backwashing device filters and purifies the liquid medicine and returns the liquid medicine to the developing machine 1 through the drain pipe 52.
The working principle is as follows:
referring to fig. 4, in an embodiment, the synchronous filtering and backwashing device is provided with 9 filters, each filter comprises an independent set of filtering system and backwashing system, so that each filter can perform the filtering and backwashing functions. Different filters are respectively selected by the filtering system and the backwashing system at each time period to operate simultaneously. The water inlet valves of the filtering system are 9 (1 is distributed to each filter and is respectively No. 1-9), the back flushing valves of the back flushing system are also 9 (1 is distributed to each filter and is respectively No. A1-A9), and the water outlet valves at the top of the filters are also 9 (1 is distributed to each filter and is respectively No. B1-B9).
Referring to fig. 2, in the filtering system, a filtering pump 4 pumps the mixed liquid medicine in the main tank of the developing machine 1 into a filter, the mixed liquid medicine is filtered by a filtering core 5 in the filter and flows into a medicine storage tank 2, and then the mixed liquid medicine flows back to the developing machine 1 from the medicine storage tank 2, so that the filtering of the liquid medicine is realized.
Referring to fig. 3, in the backwashing system, a backwashing pump 3 pumps the liquid medicine in the medicine storage tank 2 to wash out impurities adsorbed on the outer surface of the filter element 5, so that the impurities are precipitated. The liquid medicine flows back to the medicine storage tank 2 after being filtered by the filter element 5.
With continued reference to fig. 4, when the filtration system of the present application selects filter No. 2 for filtration, filter No. 1 is back flushed during operation. At the moment, the filter pump 4 is opened, the No. 2 water inlet valve behind the filter pump is opened, and the No. 1 water inlet valve and the No. 3-9 water inlet valves are closed; meanwhile, the backwashing pump 3 is started, the backwashing valve A1 is started, and the backwashing valves A2-A9 are closed. The drainage valve B1 is closed, and the drainage valves B2-B9 are opened.
When the No. 1 filter is back flushed, the No. 2 filter filters; when the No. 2 filter is back flushed, the No. 3 filter filters; when the No. 3 filter is backwashed, the No. 4 filter filters; filtering by a No. 5 filter during backwashing of a No. 4 filter; no. 6 filter is used for filtering during the back flushing of No. 5 filter; filtering by a No. 7 filter during backwashing of the No. 6 filter; filtering by a No. 8 filter during backwashing of a No. 7 filter; filtering by a No. 9 filter during backwashing of a No. 8 filter; no. 1 filter filters during the back flushing of No. 9 filter. The circulation is formed, and the backwashing time and the filtering time of each filter can be set by the system.
After filtering for a certain time, opening a drain valve 7 at the top of the filter, and draining the oil stain with lighter density in the filter into a drain cylinder 6 through a drain pipeline; the sediment at the bottom of the filter (the bottom of the plurality of filters is of an integral communication structure) is discharged by opening the sediment drain valve 9.
This application increases synchronous filtration and back flush unit on the basis of current conventional developing machine for carry out high-efficient the filtering to the developer solution of filter, make developer solution reuse. The device realizes filtering liquid medicine when liquid medicine work, does not influence liquid medicine cleaning work to can prolong the life of maintenance cycle and filter core, reduce sewage discharge, thereby save a large amount of cost input, create maximize economic value, improve market competition.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A synchronous filtering and backwashing device is characterized by comprising: the water inlet end of the first filter and the water inlet end of the second filter are connected with the water inlet pipe, and the water outlet end of the first filter and the water outlet end of the second filter are connected with the water outlet pipe;
the filter is characterized by further comprising a first flushing pipe and a second flushing pipe, wherein one end of the first flushing pipe is connected with the flushing end of the first filter, the other end of the first flushing pipe is connected with the water discharging pipe, one end of the second flushing pipe is connected with the flushing end of the second filter, the other end of the second flushing pipe is connected with the water discharging pipe, and the first flushing pipe and the second flushing pipe are used for flushing a filter element in the filter;
the water inlet ends of the first filter and the second filter are respectively connected with a first switch and a second switch, and the flushing ends of the first filter and the second filter are respectively connected with a third switch and a fourth switch.
2. The synchronous filtering and backwashing device of claim 1, further comprising a first water inlet branch pipe, a second water inlet branch pipe, a first water discharge branch pipe and a second water discharge branch pipe, wherein one end of the first water inlet branch pipe is connected with a water inlet end of the first filter, and the other end of the first water inlet branch pipe is connected with the water inlet pipe through the first switch; one end of the second water inlet branch pipe is connected with the water inlet end of the second filter, the other end of the second water inlet branch pipe is connected with the water inlet pipe through the second switch, and the first water inlet branch pipe and the second water inlet branch pipe are connected in parallel; one end of the first drainage branch pipe is connected with the drainage end of the first filter, and the other end of the first drainage branch pipe is connected with the drainage pipe; one end of the second drainage branch flow pipe is connected with the drainage end of the second filter, the other end of the second drainage branch flow pipe is connected with the drainage pipe, and the first drainage branch flow pipe and the second drainage branch flow pipe are connected in parallel.
3. The simultaneous filtration and backwash device according to claim 1 or 2, wherein the first switch comprises a first feed valve, the second switch comprises a second feed valve, the third switch comprises a first backwash valve, and the fourth switch comprises a second backwash valve.
4. The synchronous filtering and backwashing device of claim 1, wherein the water inlet pipe is connected with a filtering pump, and the first flushing pipe is sequentially connected with a backwashing pump and a medicine storage tank.
5. The synchronous filtering and backwashing device of claim 1, further comprising a drain pipe and a drain cylinder, wherein the tops of the first filter and the second filter are provided with drain outlets, one end of the drain pipe is connected with the drain outlet, and the other end of the drain pipe is connected with the drain cylinder.
6. The synchronous filtration and backwash device as claimed in claim 1, wherein the first filter and the second filter are each provided with a cylinder body, and a plurality of filter cartridges are fixedly connected in the cylinder body.
7. The synchronous filtration and backwash device as claimed in claim 6, wherein the core of the filter cartridge is provided with a filter through hole, and the filter through hole is communicated with the water inlet end; and a filtering cavity and a water outlet are arranged in the filtering filter element, and the filtering cavity is communicated with the drainage end through the water outlet.
8. The synchronous filtration and backwash device as claimed in claim 6, wherein a settling tank is provided at the bottom of the cylinder body, and a sediment drain valve is provided at the bottom of the cylinder body.
9. The simultaneous filtration and backwash device according to claim 6, wherein the filter cartridge comprises a metal sintered cartridge.
10. The synchronous filtration and backwash device according to claim 1, further comprising a cleaning device, wherein one end of the drain pipe is connected to a water inlet of the cleaning device, and one end of the water inlet pipe is connected to a water outlet of the cleaning device.
CN202210580611.2A 2022-05-26 2022-05-26 Synchronous filtering and back flushing device Withdrawn CN115155149A (en)

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CN85201816U (en) * 1985-05-09 1986-11-05 罗龙蕃 High efficiency vacuum oil-water separator
US20090266234A1 (en) * 2005-12-22 2009-10-29 Stefan Ahman Fabric Filter With Fluidised Dust-Bed, and a Method of Maintaining It
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