CN209630758U - A kind of filtration system that can be cleaned automatically - Google Patents

Abstract

The utility model provides a kind of filtration system that can be cleaned automatically, and including the one or more filter elements being series on main line, which includes two filters in parallel；It is respectively equipped with a pressure sensor on the main line for being located at each filter element both ends, for detecting the front and back pressure difference of the filter element, pressure sensor signal is connected to a PLC system；Filter includes the inner cavity separated by strainer and an exocoel, further include an inlet that is positioned at filter one end and being connected to exocoel, positioned at the filter other end and the liquid outlet and a rinse mouth that are connected to inner cavity, the placed in series that the inlet is connected with liquid outlet is on main line, the rinse mouth connects a flushing pipeline, which is also connected with a blowoff line；The inlet and liquid outlet pipeline, flushing pipeline and blowoff line of filter are respectively equipped with a valve for being controlled by the PLC system.

Description

A kind of filtration system that can be cleaned automatically

Technical field

The utility model relates to mechanical manufacturing fields, and in particular to the filtration system that one kind can clean automatically.

Background technique

Chemical analysis contained in Chinese medicine is sufficiently complex, not only the effective ingredient containing there are many, but also has invalid element, also includes Toxic substance.It extracts its effective component and is further separated, purified, obtaining effective monomer is one in traditional Chinese medicine research field Item important content.Traditional Chinese medicine extraction is exactly to extract wherein effective ingredient to greatest extent using some extractive techniques, so that Chinese materia medica preparation Inherent quality and clinical therapeutic efficacy improve, so that the effect of Chinese medicine is played to greatest extent.

The extraction of Chinese medicine be Chinese Traditional Medicine it is important unit operation, process, process flow selection and set Standby configuration will all be directly related to the quality and clinical effectiveness of Chinese medicine.What Chinese medicine was obtained by boiling the methods of pan-fried, dipping, alcohol extracting Extracting solution is a kind of solidliquid mixture, generally all contains many silt particles, dregs of a decoction fragment and particle and does not have medicative macromolecular The impurity such as colloid, they are usually the principal element of volume, clarity, mouthfeel for influencing pharmaceutical preparation etc., it is therefore desirable to by medicine Liquid is separated with the dregs of a decoction.

Most common separation method is exactly to filter.Filtering is to make suspension or solid under motive force or other external forces Supernatant liquid in liquid mixture penetrates medium, and solid particle and other substances are retained by filter medium, thus make solid and its The operation that his substance is separated with liquid.Medical filtration in Chinese patent drug pharmacy procedure is the important composition in pharmacy link, filtering It is insufficient to remain in a large amount of medical fluid still among medicinal material, so that effective ingredient is cannot get good extraction and application, Also increase production cost；Or its extraction filtering technique is sufficiently complex, it is not easy to operate, at high cost.

Currently, mostly use strainer to be filtered in Chinese medicine extract equipment in the market, however strainer is filtered after filtering for a long time Mesh can be blocked gradually by the dregs of a decoction.Therefore it at runtime or after end of run, needs to be opened manually filter and takes out strainer progress The removing work of the dregs of a decoction.For example, CN207412856U discloses a kind of traditional Chinese medicine extraction filter device, it is equipped with side opening side plate, close Block, magnet, filter screen, card slot, spring leaf and Snap ring structure are sealed, filter screen can be rapidly assembled and disassembled, thus to filter screen It is cleared up；CN205759980U discloses a kind of traditional Chinese medicine extraction filter device, is equipped with filter assemblies in medicine liquid tank, removably Filter screen can be pulled out out of medicine liquid tank by sliding rail and be cleaned；In addition, there are also CN207462765U etc. also disclose it is removable The filter device unloaded.However disassembly, cleaning filter screen will necessarily result in the interruption for extracting process, manufacture work in current industrial intelligent Factory belongs to process breakpoint, it is difficult to realize digitlization, automation control.For one of Chinese herbal medicine industry intelligence manufacture problem.

Utility model content

To overcome above-mentioned technical problem, the utility model provides a kind of filtration system that can be cleaned automatically, can treat Filtrate body carries out automatic fitration, and can automatically detect blocking state of filter and realize the automatic cleaning of filter, does not need Disassembly and shut-down, realize the automatic cleaning of filtration operation free of discontinuities and filter.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of filtration system that can be cleaned automatically, including the one or more filter elements being series on main line, the mistake Filter unit includes two filters in parallel；A pressure sensing is respectively equipped on the main line for being located at each filter element both ends Device, for detecting the front and back pressure difference of the filter element, pressure sensor signal is connected to a PLC system；Filter includes by filtering The inner cavity and an exocoel that net separates further include an inlet that is positioned at filter one end and being connected to exocoel, are located at filtering The device other end and the liquid outlet and a rinse mouth that are connected to inner cavity, the placed in series which connects with liquid outlet is in master On pipeline, which connects a flushing pipeline, which is also connected with a blowoff line；The inlet and liquid outlet of filter Pipeline, flushing pipeline and blowoff line are respectively equipped with a valve for being controlled by the PLC system.

Further, the flushing pipeline that two filters of the filter element are connected is commonly connected to one and total rushes Wash pipeline.

Further, the filter includes shell and filter core, and the shell and filter core surround the exocoel, which surrounds The inner cavity contains the inlet, rinse mouth on the shell, contains the liquid outlet on the filter core, liquid outlet pipeline passes through The shell.

Further, the shell includes body and upper cover, and the inlet is set on the shell, the liquid outlet pipeline Across the shell, the rinse mouth is set on this on lid.

Further, the upper cover also contains a drain, which is controlled by a blow valve and opened and closed.

Further, the rinse mouth connects a rotating wash bowl, which is located in the inner cavity.

Further, the filter core includes filter screen bracket and the strainer, which is used to support strainer and consolidates Due in the shell.

Further, the filter screen bracket includes flange, screen support frame, strainer fixed frame, and the flange is removably solid Surely it is connected to the shell；The screen support frame is welded on the flange, the wall surface for surrounding the inner cavity containing one, outside the wall surface The strainer is wrapped up, multiple through-holes are provided on the wall surface；The strainer fixed frame covers on the wall surface of the screen support, the filter It is located on the inside of the strainer fixed frame when net is wrapped on the wall surface and is fixed by the strainer fixed frame.

Further, the strainer is made of side wall strainer and bottom screen, and side wall strainer and bottom screen are integrated into Type, or it is fixedly connected with by a fixed frame and is fixed on the bottom of screen support frame.

Further, the shell and filter core are tubular.

The working principle of this system is: for filter element when being filtered operation, two filter one enables one It closes, the inlet and outlet pipeline valve of enabling is in an open state, and the valve of flushing pipeline and blowoff line is in off state, closing All valves of filter are in off state.Nozzle and valve in the case top lid of filter are all closed, from master The liquid to be filtered of pipeline enters shell by inlet, into shell after filter residue by strainer obstruct it is outer intracavitary outside strainer, filtering Liquid to be filtered afterwards is located in the inner cavity of filter core, goes out liquid by liquid outlet and completes filtration operation.When the dregs of a decoction in the filter are excessive When needing to clear up, the pressure sensor positioned at both ends can detect that pressure difference is more than a threshold value automatically, and pressure difference signal can be sent to PLC System, PLC system can close the inlet and outlet pipeline valve, open blowoff line valve, then open flushing pipeline valve and carry out clearly Work is washed, while the exits and entrances valve of another filter can be opened to continue filtration operation.When cleaning, in terminal valve Door is closed with after blow-off line valve opening, is first opened drain valve, is opened flushing pipeline valve again later and sprayed Cleaning, it is therefore an objective to the liquid to be filtered in filter is vented, the dregs of a decoction of strainer exocoel then will be attached to by cleaning solution Flushing is got off, and is discharged via blowoff line, and the valve of closing flushing pipeline and blowoff line after cleaning is completed.Thus may be used Know, this system can carry out automatic fitration to liquid to be filtered, and can automatically detect blocking state of filter and realize filter Automatic cleaning, do not need dismantle and stop work, realize the filtration operation free of discontinuities of liquid to be filtered and the automatic cleaning of filter.

Detailed description of the invention

Fig. 1 is the filtration system structural schematic diagram that one kind for filtering Chinese medicine extract of embodiment can clean automatically.

In figure: 1- Chinese medicine extracting tank, 2,3- filter, 4,5- pressure sensor, 6- delivery pump, 7- extract liquid storage tank.

Fig. 2 is the structure chart of the filter in embodiment.

In figure: 21- stack shell, 211- inlet, 212- liquid outlet, 22- upper cover, 221- drain, 222- rinse mouth, 223- Rotating wash bowl, 23- filter core, 231- annular flange, 232- screen support frame, 233- strainer fixed frame, 234- fixed ring, 241- side wall Strainer, 242- bottom screen.

Specific embodiment

To enable the features described above and advantage of the utility model to be clearer and more comprehensible, special embodiment below, and appended by cooperation Figure is described in detail below.

The present embodiment provides the filtration systems that one kind can clean automatically, applied to the filtering of Chinese medicine extract, as shown in Figure 1 (because two filter element structures are identical, therefore same parts only label at a filter element wherein), for realizing extracting solution Filter being used continuously and do not disassemble under the premise of cleans automatically, the building block of this system mainly include Chinese medicine extracting tank 1, Filter element, extracts liquid storage tank 7 and PLC system (not shown) at 6, two filter elements of delivery pump.Wherein, Chinese medicine extracting tank 1 Extract liquid storage tank 7 between pipeline be main line, a delivery pump 6 is provided on the main line, is used to provide power, will in Extracting solution in medicine extractor 1, which is transported to, to be extracted in liquid storage tank 7.Filter element is connected on the main line, and quantity is at least one A, the present embodiment is connected using two, and so-called series connection refers to that main line is first connected to the import of a filter element, from this The import of next filter element is connected in the outlet of filter element again after coming out, come out from the outlet of next filter element, The bypass that main line is not provided with around filter element.For convenience of description, by the referred to as by-pass filtration on the left side in figure in the present embodiment Unit, the right are known as secondary filtration unit.It is respectively equipped with a pressure sensor at the both ends of filter element, such as level-one in figure The pressure sensor 4 and 5 that filter element is equipped with, for detecting the pressure difference before and after filter element and pressure difference signal being sent to PLC System.Each filter element includes two filters in parallel, and such as the filter element 2 and 3 in this figure, so-called parallel connection refers to two The import of a filter is interconnected, and outlet is interconnected.Each filter is also connected with a flushing pipeline and a blowoff line, The flushing pipeline that two filters of each filter element respectively connect is commonly connected to same total flushing pipeline, but not with this It is limited.Valve (non-emphasis valve is not shown) is equipped on each pipeline, such as valve A1~A3, the B1~B8 in figure, wherein At least valve A2, A3, B1~B6 is controlled by PLC system, other valves can also be controlled by PLC system.

By taking the by-pass filtration unit in the present embodiment as an example, come the workflow and control principle of illustratively this system Are as follows:

Beginning state is the filter that two filters 2 and 3 are after cleaning, is filtered first using filter 1, mistake All valves of filter 2 are default to be in off state.1 inlet valve B4 of filter, liquid outlet valve B1 are in an open state, row Dirty outlet valve B3 is in off state, and extracting solution is pumped into the extracting solution import of filter 1 by delivery pump 6, and extracting solution is by filtering Device 1 filters, and is conveyed backward by liquid outlet, when pressure sensor 4 and 5 detects that inlet and outlet both ends pressure difference reaches critical field After interior (technique initialization range will finally be determined according to technique), it was demonstrated that strainer is blocked by the dregs of a decoction to cannot be used continuously, and pressure is believed Number it being transmitted to PLC system, the switching of PLC system control valve, valve B1, B3, B4 of filter 1 are in close state at this time, Inlet valve B5, the liquid outlet valve B2 of filter 2 are in the open state, and filter 3 is filtered operation.Filter simultaneously Sewage draining valve B3 is opened, and carries out emptying drain to filter, then open flushing pipeline valve A1 and A2, and cleaning solution is by strainer outer wall The dregs of a decoction wash, sewage is discharged by bottom blow-down pipeline, and cleaning process is controlled according to technique initialization by PLC system.Clearly Flushing pipeline valve A1, A2 and sewage draining valve B3 are successively closed after washing, cleaning terminates.3 pressure value of device to be filtered is to up to standard Filter 1 is switched to after standard again.Similarly reach circulation continuous operation.

Delivery pump 6 is set to a position on main line, and when there are multiple concatenated filter elements, delivery pump 6 is preferred A position be such as its outlet end for being located at by-pass filtration unit in this present embodiment after first filter element Main line on.The main line of the outlet end of delivery pump 6 draws a return line, and the return line is by mentioning after Partial filtration Liquid is taken to be back in Chinese medicine extracting tank 1.The reason of it is arranged in this way is that by-pass filtration unit is connected with Chinese medicine extracting tank 1, due to Chinese medicine extracting tank 1 is local heating, is easy to cause extracting solution uneven heating, therefore in extraction of traditional Chinese medicine, extracting solution is defeated It send and enters by-pass filtration unit by extracting pot bottom outlet tube under pump power and be filtered, when carrying out cleaning solution cleaning, pass through It crosses filtered extracting solution to flow back into Chinese medicine extracting tank 1, the extracting solution after this circulating filtration, in Chinese medicine extracting tank 1 Temperature has also reached uniform state, can also remove some impurity when extracting during extracting extracting solution.Liquid to be extracted After the completion of extraction, the liquid back pipe road of by-pass filtration unit is switched to be connected with right side secondary filtration unit, and extracting solution passes through right side Secondary filtration unit further filtered, eventually pass through the extracting solution of filtering by Pipeline transport to extracting liquid storage tank In.

It show the structure of filter on the left of Fig. 2, is cylindric fixed filter in the present embodiment, but be not limited thereto, The filter includes shell and the filter core 23 positioned at enclosure interior, and filter is divided into the exocoel outside strainer and is located at strainer Interior inner cavity, the shell include stack shell 21 (i.e. body) and upper cover 22.Wherein, upper cover 22 include rotating wash bowl 223, drain 221, Rinse mouth 222, drain 221 are controlled by blow valve (not shown) control switch, rinse mouth 222 by detergent line valve (such as A2) Switch.Shell stack shell 21 includes inlet 211 (while being used for sewage draining exit), liquid outlet 222.Wherein, inlet 221 is located at stack shell 21 bottom connects threeway herein, is all the way blowdown use, connects blowoff line, be equipped with waste valve (such as B3), be used for all the way Into extracting solution, Chinese medicine extracting tank 1 is connected, is equipped with inlet valve (such as B4)；Liquid outlet 212 is located at the top of stack shell 21, is equipped with Liquid outlet valve (such as B1).It should be pointed out that inlet 211 connects exocoel, liquid outlet 211, rinse mouth 222, drain 221 It is connected to inner cavity.

Filter core shown on the right side of Fig. 2 includes annular flange 231 (i.e. flange), screen support frame 232, strainer fixed frame 233, consolidates Determine ring 234 (i.e. fixed frame) and strainer, which includes side wall strainer 241 and bottom screen 242.Wherein, annular flange 231 For filter core 23 to be fixed and sealed by screw connection with inside shell stack shell 21；Screen support frame 232 is located at annular flange 231 lower section, and be welded as a whole with annular flange 231, for keeping the shape and intensity of strainer；Screen support frame packet A tubular wall surface is included, is provided with multiple circular through holes on the wall surface, it is therefore an objective to as the support frame of strainer, outside wraps strainer, Prevent strainer from deforming, falling off during the filtration process, hole size can be designed according to actual needs with density, can also be direct Required size is directly cut into using standard stainless steel filtering net in the market.Strainer fixed frame 233 can have according to the size of filter core 23 One extremely multiple, and ring-wound is in the outside of strainer (being Specifically side wall strainer 241), for strainer to be fastened on screen support On frame 232.232 bottom of screen support frame can with aperture can not also aperture, bottom screen 242 and fixed ring 234 equally use Screw is fixed on the bottom of screen support frame 232.The advantage of the structure are as follows: strainer does not need again outer processing soldered system, fits yet For the strainer of machine-shaping, i.e. rectangle filter cloth directly wraps, and outside is tightened, and does not need to be welded into using ratio-frequency welding Shaped cylindrical Filter-screen bag is processed simpler, conveniently.

The substantially course of work of this filter are as follows: extracting solution is entered in filter by inlet 211, will be hanged by strainer Floating object stops in the exocoel on the outside of strainer, and filtered extracting solution enters the inner cavity on the inside of strainer, by being connected to inner cavity Liquid outlet 212 is sent out.When needing to clean the suspended matter being adhered on strainer, the valve of the drain 221 of upper cover, ability are opened It is communicated with atmosphere, raffinate can just eject in filter, and the valve is closed after drain, and cleaning solution is entered by rinse mouth 222, lead to The spray of over cleaning ball 223 such as inner cavity, the suspended matter being attached on strainer is rinsed out, the 211 (conduct at this time of inlet of lower section is passed through Sewage draining exit) discharge, it is achieved in back flush.

It should be noted that above embodiments are that the filtration system provided by the invention that can be cleaned automatically is used to Chinese medicine to mention The filtering for taking liquid belongs to a kind of preferable embodiment, is only to illustrate the technical solution of the utility model rather than carries out to it Limitation, actually its filtering that can also be used for other Chinese medicines and non-Chinese medicinal liquor, it is only necessary to corresponding adjustment pressure sensor ginseng Number selects appropriate size and pipeline, the filter of material etc., and those skilled in the art can be to the skill of the utility model Art scheme is modified or replaced equivalently, without departing from the spirit and scope of the utility model, the protection model of the utility model Enclosing should be subject to described in claims.

Claims (10)

1. the filtration system that one kind can clean automatically, which is characterized in that including the one or more filterings being series on main line Unit, the filter element include two filters in parallel；It is respectively equipped on the main line for being located at each filter element both ends One pressure sensor, for detecting the front and back pressure difference of the filter element, pressure sensor signal is connected to a PLC system；Filtering Device includes the inner cavity separated by strainer and an exocoel, further includes a feed liquor that is positioned at filter one end and being connected to exocoel Mouthful, positioned at the filter other end and the liquid outlet and a rinse mouth that are connected to inner cavity, what which connected with liquid outlet For placed in series on main line, which connects a flushing pipeline, which is also connected with a blowoff line；Filter into Liquid mouth and liquid outlet pipeline, flushing pipeline and blowoff line are respectively equipped with a valve for being controlled by the PLC system.

2. the filtration system that one kind as described in claim 1 can clean automatically, which is characterized in that two of the filter element The flushing pipeline that filter is connected is commonly connected to a total flushing pipeline.

3. the filtration system that one kind as described in claim 1 can clean automatically, which is characterized in that the filter includes shell And filter core, the shell and filter core surround the exocoel, which surrounds the inner cavity, and the inlet, punching are contained on the shell Mouth is washed, the liquid outlet is contained on the filter core, liquid outlet pipeline passes through the shell.

4. the filtration system that one kind as claimed in claim 3 can clean automatically, which is characterized in that the shell and filter core are cylinder Shape.

5. the filtration system that one kind as claimed in claim 3 can clean automatically, which is characterized in that the shell include body and Upper cover, the inlet are set on the shell, and the liquid outlet pipeline passes through the shell, and the rinse mouth is set on this on lid.

6. the filtration system that one kind as claimed in claim 5 can clean automatically, which is characterized in that the upper cover, which also contains one, puts It eats dishes without rice or wine, which is controlled by a blow valve and opened and closed.

7. the filtration system that one kind as claimed in claim 5 can clean automatically, which is characterized in that the rinse mouth connection one is clear Ball is washed, which is located in the inner cavity.

8. the filtration system that one kind as claimed in claim 3 can clean automatically, which is characterized in that the filter core includes strainer branch Frame and the strainer, the filter screen bracket are used to support strainer and are fixed in the shell.

9. the filtration system that one kind as claimed in claim 8 can clean automatically, which is characterized in that the filter screen bracket includes method Orchid, screen support frame, strainer fixed frame, which, which is removably secured, is connected to the shell；The screen support frame is welded in On the flange, the wall surface for surrounding the inner cavity containing one, the wall surface wraps up the strainer outside, is provided on the wall surface multiple logical Hole；The strainer fixed frame covers on the wall surface of the screen support, and the strainer is located at when the strainer is wrapped on the wall surface and is fixed It is fixed on the inside of frame and by the strainer fixed frame.

10. the filtration system that one kind as claimed in claim 8 can clean automatically, which is characterized in that the strainer is filtered by side wall Net and bottom screen are constituted, and side wall strainer is integrally formed with bottom screen, or is fixedly connected by a fixed frame and is fixed on filter The bottom of net support frame.