CN218686940U - High-efficient back flush multilayer lamination formula prefilter - Google Patents

Abstract

The utility model discloses a high-efficient back flush multilayer lamination formula prefilter, including valve body, main valve core, filtering component and valve rod, be provided with the valve core case in the valve body, set up epicoele and cavity of resorption in the valve body, be equipped with the check valve to the one-way circulation of cavity of resorption between epicoele and the cavity of resorption, be provided with the three runner including the water inlet runner, filter core inner chamber runner and the water outlet runner in the valve core case, the three runner upper port of water inlet runner, water outlet runner and filter core inner chamber runner all takes shape at the valve core case top, the inlet tube is connected to the other end of water inlet runner, the other end of water outlet runner is connected the outlet pipe; the main valve core sets up on the valve core case for two arbitrary runner upper portions on making the valve core case switch on, the utility model discloses a two pairs of plane seal's case and synchronous linkage, four valve blocks promptly, two are fixed, and two can be rotatory through external force in addition, realize the synchronous linkage, thereby switch the runner, realize that the filter filters, bypass, backwash function.

Description

High-efficiency backwashing multilayer laminated prefilter

Technical Field

The utility model relates to a filter, specifically a leading filter of high-efficient back flush multilayer lamination formula.

Background

The filter element of the pre-filter in the current market mainly takes a filter screen type structure as a main part, a cleaning method comprises positive washing, siphon cleaning or brushing and the like, the filter screen type filter element has the limitation that the filter element is difficult to clean, and the filter element is automatically washed or brushed, so that the filter element is always detached to be brushed to clean. The filter screen type pre-filtration usually pollutes water due to corrosion of the filter screen, needs long-term maintenance or replacement and has limited service life. The preposed filter in the prior art can interrupt subsequent water supply when automatically washing or detaching and cleaning the filter element, thereby causing inconvenience to the household life. At present, some pre-filters in the market have a backwashing function, but the backwashing effect is poor, or the structure is limited, so that the dirt is difficult to remove.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leading filter of high-efficient back flush multilayer lamination formula to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a high-efficiency backwashing multilayer laminated prefilter comprises a valve body, a main valve core, a filtering component and a valve rod, wherein a valve core seat is arranged in the valve body, an upper cavity and a lower cavity are arranged in the valve body, a check valve which is communicated with the lower cavity in a one-way mode is assembled between the upper cavity and the lower cavity, three flow passages including a water inlet flow passage, a filter core inner cavity flow passage and a water outlet flow passage are arranged in the valve core seat, upper ports of the three flow passages of the water inlet flow passage, the water outlet flow passage and the filter core inner cavity flow passage are all formed at the top of the valve core seat, the other end of the water inlet flow passage is connected with a water inlet pipe, and the other end of the water outlet flow passage is connected with a water outlet pipe;

the main valve core is arranged on the valve core seat and is used for communicating the upper parts of any two flow passages on the valve core seat,

the filter component comprises an outer barrel, a lamination frame, a plurality of laminations and an auxiliary valve core, wherein the lamination frame is coaxially arranged in the outer barrel, the plurality of laminations are sleeved outside the lamination frame in a lamination way, the outer part of the outer barrel, which is positioned at the lamination frame, forms an outer cavity, the outer cavity is communicated with the lower cavity, a water outlet is formed at the bottom end of the outer cavity, an inner cavity is formed in the lamination frame and is communicated with a flow passage of the inner cavity of the filter element, an overflow groove is formed at the peripheral side of the inner cavity, and the auxiliary valve core is arranged at the water outlet so as to open and close the water outlet;

the valve rod sequentially penetrates through the main valve core, the valve core seat, the inner cavity and the auxiliary valve core and is rotatably arranged, so that the main valve core and the auxiliary valve core are synchronously adjusted.

As a further aspect of the present invention: the main valve core comprises a driving sheet and a main fixed sheet, the main fixed sheet is fixedly installed on the valve core seat, the driving sheet and the main fixed sheet are sealed in a plane and rotate coaxially, three through holes sequentially communicated with a water inlet flow channel, a water outlet flow channel and a filter element inner cavity flow channel are formed in the main fixed sheet respectively, a blind hole is formed in the driving sheet, the blind hole can enable the upper portions of any two adjacent through holes in the main fixed sheet to be communicated, and the driving sheet is fixedly connected with the valve rod.

As a further aspect of the present invention: the auxiliary valve core comprises an auxiliary fixed piece and an auxiliary movable piece, the auxiliary fixed piece is fixedly installed at the water outlet and provided with a valve hole communicated with the water outlet, the auxiliary movable piece is sealed in plane and coaxially and rotatably arranged on the auxiliary fixed piece, and the auxiliary movable piece is fixedly connected with the valve rod.

As a further aspect of the present invention: the valve comprises a valve body, and is characterized by further comprising a shifting fork, wherein the shifting fork is rotatably arranged on the valve body and is arranged in the upper cavity, the driving sheet is fixedly arranged at the bottom of the shifting fork, and the shifting fork is fixedly connected with the valve rod.

As a further aspect of the present invention: the three through holes on the main stator are all arc-shaped through holes and are distributed in a circular trisection manner.

As a further aspect of the present invention: the blind holes on the driving sheet are arc-shaped holes occupying two thirds of the circumference, and the driving sheet is also provided with arc-shaped through holes occupying one third of the circumference.

As a further aspect of the present invention: the lamination frame includes circle seat, lamination supporting seat and bobbin, the top of going up the circle seat forms the inner port of filter core inner chamber runner intercommunication, a plurality of bobbin fixed mounting are in last circle seat bottom and are hoop evenly distributed, the activity sets up in the bobbin below about the lamination supporting seat, and a plurality of bobbins and lamination supporting seat enclose jointly synthetically the inner chamber forms between the adjacent bobbin the overflow groove, set up the spring between the bottom of lamination supporting seat and urceolus, the spring makes the upwards extrusion of lamination supporting seat and makes the cover establish a plurality of lamination extrusion of bobbin periphery closely knit.

As a further aspect of the present invention: the pipe barrel is internally provided with a pipe cavity, the top of the pipe cavity is open, the bottom of the pipe cavity is sealed, the opening at the top of the pipe cavity is communicated with the inner port, a plurality of jet holes are vertically formed in the peripheral side of the pipe barrel, and the hole axis direction of the jet holes extends towards the tangential direction of the periphery where the plurality of pipe barrels are located.

As a further aspect of the present invention: and the top of the inner cavity is provided with a flow limiting valve core which is in one-way conduction from bottom to top in a floating manner.

As a further aspect of the present invention: and the upper end and the lower end of the lamination are respectively provided with a jet flow step, and the end surface where the jet flow step is positioned faces the direction of the circle center of the lamination.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a two pairs of plane seal's case and synchronous linkage, four valve blocks promptly, two are fixed, and two can be rotatory through external force in addition, realize the synchronous linkage to switch the runner, realize that the filter filters, bypass, backwash function.

2. The active piece on the main valve core adopts a trisection structure, so that the flow cross section area of the filter is increased to the maximum extent, and the flow is increased.

3. During filtering, the multi-layer lamination keeps a compact state to realize required filtering precision, and during backwashing, the multi-layer lamination is in a loose state to increase the interval between the laminations so as to facilitate dirt washing.

4. When the bypass state is adopted, the internal pressure of the filter assembly can be released, and the interior of the filter assembly is in a water-free state at the moment, so that the filter assembly can be disassembled and manually cleaned under the condition of uninterrupted water supply.

5. The inner cavity of the lamination frame is formed by enclosing a plurality of pipe barrels, the top opening of the pipe cavity of each pipe barrel is communicated with the inner port, a plurality of jet holes are vertically formed in the peripheral side of each pipe barrel, the hole axis direction of each jet hole extends towards the tangential direction of the periphery of the corresponding pipe barrel, raw water enters the filter assembly from the inner port in two ways, one way of raw water enters the inner cavity, flows out from an overflowing groove between the adjacent pipe barrels to the outer cavity and washes laminations in a loose state, the other way of raw water enters the pipe cavity from the top opening, then flows from the side surface of the pipe cavity to the plurality of jet holes distributed upwards along the tangential direction of the periphery, and two strands of water flow generate impact turbulence effect at the lamination position, so that the impact force on the laminations is increased, the impact contact surface is increased, the larger vibration is generated on the laminations, and the cleaning effect is further improved.

6. Through floating at the inner chamber top and installing the current-limiting valve core that one-way switched on from bottom to top, make the utility model discloses under the filtration mode, the water after the filtration is by the inner chamber normal discharge of jack-up current-limiting valve core that makes progress, under the backwash mode, current-limiting valve core shutoff inner chamber makes the whole lumens that get into of raw water and jets out through the jet orifice high pressure to increase jet pressure, wash with the realization to the high strength of lamination.

7. The upper end and the lower end of the lamination are respectively provided with a jet flow step, the end face where the jet flow step is located faces the circle center direction of the lamination, raw water is jetted outwards along the tangential direction of the circumference where the plurality of pipe barrels are located through the jet flow hole and acts on the jet flow step on the lamination, the lamination is subjected to tangential impact force under the action of the impact force of the raw water, the lamination is enabled to disturb the central shaft of the lamination to rotate rapidly, relative rotation between the lamination and the lamination is enabled to achieve a rubbing washing effect, the effect of water flow impact is matched, more than ninety-five percent of dirt accumulated on the lamination can be rubbed and cleaned, the lamination is enabled to be in a clean state again, and the repeatedly-used filtering effect is improved.

8. The bottom is arranged at the water outlet, the smooth flow channel is convenient for easily discharging dirt, and certain negative pressure can be generated to match the rotation of the lamination so as to achieve better scrubbing effect.

Drawings

FIG. 1 is a schematic structural diagram of a high-efficiency backwashing multi-layer laminated prefilter;

FIG. 2 is a top view of the valve body;

FIG. 3 is a cross-sectional view of the valve body;

FIG. 4 is a cross-sectional view of the valve body;

FIG. 5 is a cross-sectional view of the filter assembly;

FIG. 6 is an enlarged view of a portion of the drain opening of FIG. 5;

FIG. 7 is a schematic structural view of a lamination holder;

FIG. 8 is a transverse cross-sectional view of a lamination holder;

FIG. 9 is a schematic view of the main spool configuration;

FIG. 10 is a schematic structural view of the secondary spool;

FIG. 11 is a schematic view of the structure of the lamination stack;

in the figure: the valve comprises a valve body 1, a valve core seat 11, a water inlet channel 11a, a water outlet channel 11b, a filter core inner cavity channel 11c, an upper cavity 1d, a lower cavity 1e, a water inlet pipe 11a ', a water outlet pipe 11b', an inner cavity interface 11c ', an outer cavity interface 1e', a valve cover 12, a one-way valve 13, a shifting fork 14 and a valve rod 15;

the main valve element 2, a main stator 21, a first through hole 21a, a second through hole 21b, a third through hole 21c, an active plate 22, a fourth through hole 22a and a blind hole 22b;

the filter assembly 3, the outer cylinder 31, the lamination 33, the jet flow step 33a, the inner cavity 34, the inner port 34a, the outer cavity 35, the outer port 35a, the water outlet 36, the auxiliary valve core 37, the auxiliary moving plate 371, the auxiliary stator plate 372 and the spring 38;

the lamination holder 32, the upper round seat 321, the lamination support seat 322, the pipe barrel 323, the pipe cavity 323a, the jet hole 323a' and the flow passing groove 323b.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1, in the present embodiment, a high-efficiency back-flushing multilayer laminated prefilter includes a valve body 1, a main valve element 2, a filter assembly 3, an auxiliary valve element 37 and a valve rod 15.

With reference to fig. 2 and fig. 3, a valve cover 12 is fixedly installed at the top of the valve body 1, a valve core seat 11 is arranged in the valve body 1, a water inlet pipe 11a 'and a water outlet pipe 11b' are installed outside the valve body 1, a water inlet flow passage 11a, a filter element inner cavity flow passage 11c and a water outlet flow passage 11b are arranged in the valve core seat 11, an upper cavity 1d is formed above the valve body 1 and outside the valve core seat 11, a lower cavity 1e is formed below the valve body 1, upper ports of the three flow passages of the water inlet flow passage 11a, the water outlet flow passage 11b and the filter element inner cavity flow passage 11c are all formed at the top of the valve core seat 11 and are uniformly distributed annularly, the water inlet flow passage 11a is communicated with the water inlet pipe 11a ', the water outlet flow passage 11b is connected with the water outlet flow passage 11b', an inner cavity interface 11c 'is formed at the bottom end of the filter element inner cavity flow passage in the lower cavity 1e, an outer cavity interface 1e' is formed at the bottom end of the lower cavity 1e, the outer cavity interface 1e 'is coaxially distributed with the lower cavity interface 11c', and a one-way check valve 13 which flows to the lower cavity 1e is assembled between the upper cavity 1d and the upper cavity 1 e.

Referring to fig. 4, the yoke 14 is rotatably mounted on the valve body 1 and is disposed in the upper chamber 1d, and the main valve element 2 is disposed between the valve element seat 11 and the yoke 14 and is configured to perform flow channel switching on the water inlet flow channel 11a, the water outlet flow channel 11b, and the filter element inner chamber flow channel 11c, so as to change the water flow direction. The main valve element 2 comprises an active plate 22 and a main fixed plate 21, the main fixed plate 21 is fixedly installed on the valve element seat 11, the two are sealed through a sealing ring, the active plate 22 is fixedly connected with the shift fork 14, the plane between the active plate 22 and the main fixed plate 21 is sealed and coaxially rotates, and the active plate 22 is driven to rotate through the shift fork 14 so as to realize the switching of a flow channel.

Referring to fig. 9, the main stator 21 is a circular valve plate, and is fixedly mounted on the filter element seat, and a first through hole 21a, a second through hole 21b and a third through hole 21c, which are sequentially communicated with the water inlet channel 11a, the water outlet channel 11b and the filter element inner cavity channel 11c, are respectively formed in the main stator, and the three through holes in the main stator 21 are arc-shaped through holes and are circumferentially distributed in trisections to provide a larger flow.

The driving plate 22 is also a circular valve plate, is fixedly mounted on the shift fork 14, and rotates synchronously with the shift fork 14, and is provided with a blind hole 22b occupying two-thirds circumference and a fourth through hole 22a occupying one-third circumference, along with the rotation of the driving plate 22, the blind hole 22b can enable the upper parts of any two adjacent through holes on the main stator plate 21 to be communicated, and the fourth through hole 22a can be communicated with another through hole on the driving plate 22 except for two through holes communicated with the blind hole 22b, so that the flow direction of water flow is changed.

Referring to fig. 5, the filter assembly 3 includes an outer cylinder 31, a lamination frame 32, a plurality of laminations 33 and an auxiliary valve core 37, the lamination frame 32 is coaxially disposed in the outer cylinder 31, the plurality of laminations 33 are in an annular sheet structure, the laminations 33 are stacked and sleeved on the outer side of the lamination frame 32, an outer cavity 35 is formed in the outer part of the outer cylinder 31 located on the lamination frame 32, an outer port 35a is formed at the top end of the outer cavity 35, a water outlet 36 is formed at the bottom end of the outer cavity 35, an inner cavity 34 is formed in the lamination frame 32, an inner port 34a is formed at the top end of the inner cavity 34, a flow passing groove 323b is formed on the peripheral side of the inner cavity 34 to communicate with the outer cavity 35 through the flow passing groove 323b, and the auxiliary valve core 37 is mounted at the water outlet 36 to open and close the water outlet 36.

Referring to fig. 10, the auxiliary valve core 37 includes an auxiliary stator 372 and an auxiliary stator 371, the auxiliary stator 372 is fixedly installed at the drain port 36, and a valve hole communicated with the drain port 36 is formed in the auxiliary stator 372, and the auxiliary stator 371 is plane-sealed and coaxially and rotatably installed on the auxiliary stator 372 to open or close the valve hole in the auxiliary stator 372, so as to open or close the drain port 36.

When the filter assembly 3 is installed, the outer port 35a at the top end of the outer cylinder 31 is connected with the outer cavity interface 1e 'at the bottom of the valve body 1, so that the lower cavity 1e is communicated with the outer cavity 35 of the filter assembly 3, and the inner port 34a at the top end of the lamination frame 32 is connected with the inner cavity interface 11c' at the bottom of the valve body 1, so that the filter element inner cavity flow passage 11c in the valve body 1 is communicated with the inner cavity 34 of the filter assembly 3.

The valve rod 15, as a synchronous linkage member of the main valve element 2 and the auxiliary valve element 37, sequentially passes through the shift fork 14, the main valve element 2, the valve element seat 11, the inner cavity 34 and the auxiliary valve element 37, the shift fork 14, the active plate 22 and the auxiliary plate 371 are fixedly connected, and when the shift fork 14 rotates, the active plate 22 and the auxiliary plate 371 are driven by the valve rod 15 to synchronously rotate, so that the flow channel adjustment is realized.

The utility model discloses a 33 formula prefilters of high-efficient back flush multilayer lamination have three kinds of mode, include:

in the filtering mode, the driving plate 22 rotates to the filtering mode position, at this time, the blind hole 22b on the driving plate 22 conducts the upper parts of the second through hole 21b and the third through hole 21c on the main fixed plate 21, so that the upper parts of the filter element inner cavity flow passage 11c and the water outlet flow passage 11b are conducted, and the fourth through hole 22a is communicated with the first through hole 21a, so that the water inlet pipe 11a ', the water inlet flow passage 11a, the upper cavity 1d, the check valve 13, the lower cavity 1e, the outer cavity 35, the inner cavity 34, the filter element inner cavity flow passage 11c, the water outlet flow passage 11b and the water outlet pipe 11b' are conducted in sequence; the secondary spool 37 is in a closed state, i.e., the drain port 36 is closed. Thus, external raw water flows in from the water inlet pipe 11a ', enters the upper chamber 1d through the water inlet flow passage 11a, enters the lower chamber 1e through the one-way valve 13, then enters the outer chamber 35 of the filter assembly 3, is filtered by the plurality of laminations 33 to form purified water, enters the inner chamber 34, then flows back to the inner chamber flow passage 11c of the filter element, enters the water outlet flow passage 11b through the blind hole 22b, and is discharged through the water outlet pipe 11b', and the mode is a conventional water purification treatment mode, so that the raw water is filtered to generate purified water.

In the backwashing mode, the driving plate 22 rotates to a backwashing mode position, at this time, the blind hole 22b on the driving plate 22 conducts the upper parts of the first through hole 21a and the third through hole 21c on the main fixed plate 21, so that the water inlet channel 11a is conducted with the upper part of the filter element inner cavity channel 11c, the fourth through hole 22a is communicated with the second through hole 21b, the auxiliary valve core 37 is in an open state, the water outlet 36 is opened, so that the water inlet pipe 11a ', the water inlet channel 11a, the inner cavity 34 of the filter assembly 3, the outer cavity 35 and the lower cavity 1e are communicated, raw water enters the water inlet channel 11a from the water inlet pipe 11a', enters the filter element inner cavity channel 11c through the blind hole 22b and enters the inner cavity 34, then enters the outer cavity 35 through the flow groove 323b, so as to flush the multi-layer lamination 33, the flushed sewage is discharged from the water outlet 36 at the bottom, the backwashed water can be filled in the lower cavity 1e from the outer cavity 35, but the check valve 13 is arranged between the lower cavity 1e and the upper cavity 1e and the water outlet channel 11b, so that the sewage can not enter the upper cavity 1e and can be discharged from the water outlet channel 36 b.

In the bypass mode, the driving plate 22 rotates to the bypass mode position, at this time, the blind hole 22b on the driving plate 22 conducts the upper parts of the first through hole 21a and the second through hole 21b on the main fixed plate 21, so that the water inlet channel 11a is directly conducted with the water outlet channel 11b, the fourth through hole 22a is correspondingly communicated with the third through hole 21c, so that the water inlet pipe 11a 'is directly communicated with the water outlet pipe 11b', raw water flows into the water inlet channel 11a from the water inlet pipe 11a 'and enters the water outlet channel 11b through the blind hole 22b, and then is directly discharged from the water outlet pipe 11b', namely, the raw water does not pass through the filter assembly 3 and only plays a role of water communication, at this time, the internal pressure of the filter assembly 3 is released and is in a water-free state, so that the purpose of releasing the internal pressure of the filter assembly 3 is achieved, and the filter assembly 3 can be directly disassembled, so that the filter assembly 3 is manually disassembled and the stubborn dirty cleaning is performed under the condition that water is uninterruptedly supplied.

To sum up, the utility model discloses a two pairs of plane seal linkage structures to through four valve blocks, two are fixed, and two can be rotatory through external force in addition, realize the linkage, thereby switch the runner, realize the function of filter filtration, bypass, backwash, improve the practicality.

Referring to fig. 6, 7 and 8, in the present embodiment, in order to have a better cleaning effect on the lamination 33 in the backwashing mode, in the present embodiment, the lamination holder 32 includes an upper circular seat 321, a lamination support seat 322, and a pipe barrel 323, the top of the upper circular seat 321 forms the inner port 34a, the pipe barrel 323 is fixedly installed at the bottom of the upper circular seat 321, the pipe barrel 323 can be three, four, or five, in the present embodiment, four pipe barrels 323 are taken as an example, the four pipe barrels 323 are circumferentially and uniformly distributed at the bottom of the upper circular seat 321, the lamination support seat 322 is movably disposed up and down below the pipe barrel 323, the four pipe barrels 323 and the lamination support seat 322 jointly enclose the inner cavity 34, the flow passing groove 323b is formed between adjacent pipe barrels 323, a spring 38 is disposed between the lamination support seat 322 and the bottom of the outer cylinder 31, the spring 38 presses the lamination support seat 322 upwards and presses a plurality of lamination valve rods 33 sleeved on the periphery of the pipe barrel 323 tightly, a hole for the valve rod 15 to pass through is formed on the lamination support seat 322, and the lamination support seat slides up and down sealingly relative to the outer cylinder 15.

In the filtering mode, the outer cavity 35 is in a positive pressure state, the lamination support seat 322 presses the plurality of laminations 33 upwards under the action of the external positive pressure and the elastic tension of the spring 38 to compact the laminations, gaps are formed between the adjacent laminations 33 for raw water to permeate through, the raw water is filtered by the plurality of laminations 33 to form purified water, and the purified water enters the inner cavity 34 through the overflowing groove 323b and is discharged by the water outlet pipe 11 b'; in the backwashing mode, the inner cavity 34 is in a positive pressure state, positive pressure water in the inner cavity 34 overcomes the elastic force of the spring 38 and enables the lamination supporting seat 322 to displace downwards, and then a plurality of laminations 33 generate a loose state, the positive pressure water flows from the inner cavity 34 to the outer cavity 35 and washes dirt accumulated on the laminations 33 in the loose state, and the generated sewage enters the outer cavity 35 and then is discharged through the bottom water outlet 36. Therefore, when in a filtering state, the multi-layer lamination 33 keeps a compact state, the required filtering precision is realized, and when in backwashing, the multi-layer lamination 33 is in a loose state, so that the interval between the laminations 33 is enlarged, the dirt is ensured to be cleaned smoothly, and the cleaning effect of the laminations 33 is improved.

In this embodiment, preferably, the pipe 323 has a pipe cavity 323a therein, the top of the pipe cavity 323a is open, the bottom is sealed, the opening at the top of the pipe cavity 323a is communicated with the inner port 34a, the circumferential side of the pipe cavity 323 is vertically provided with a plurality of jet holes 323a ', the axial direction of the holes of the jet holes 323a ' extends towards the tangential direction of the circumference where the four pipe cavities 323 are located, and the function is that, during backwashing, raw water enters the filter assembly 3 from the inner port 34a in two ways, enters the inner cavity 34 in one way, flows out to the outer cavity 35 from the flow passing groove 323b between adjacent pipe cavities 323 and washes the lamination 33 in a loose state, enters the pipe cavity 323a from the top opening in the other way, and then flows along the tangential direction of the circumference from a plurality of jet holes 323a ' distributed from the side of the pipe cavity 323a upward, and the two flows of water generate an impact turbulence effect at the lamination 33, thereby increasing impact force on the lamination 33 and increasing the impact contact surface, so that the lamination 33 generates vibration, and further improving the cleaning effect.

In this embodiment, preferably, in order to further increase the water outlet pressure of the jet holes 323a' in the backwashing mode and improve the jet flushing force on the lamination, a flow limiting valve core (not shown in the figure) is floatingly mounted on the top of the inner cavity 34, the flow limiting valve core enables the inner cavity 34 to be in one-way conduction from bottom to top, and in the filtering mode, raw water enters the inner cavity 34 from the outer cavity 35 and flows out upwards through the inner port 34a after being jacked up; under the backwashing mode, raw water flows in from the inner port 34a, the top of the inner cavity 34 is blocked under the action of the flow-limiting valve core, only the pipe cavity is kept conducted, water flowing in from the inner port 34a enters the pipe cavity 323a and is ejected out from the jet hole 323a' along the tangential direction, and therefore jet pressure is increased, and high-strength flushing of the lamination 33 is achieved.

Referring to fig. 11, in this embodiment, preferably, the upper end and the lower end of the lamination 33 are respectively provided with a jet flow step 33a, an end surface where the jet flow step 33a is located faces a center direction of the lamination 33, raw water is jetted outwards at high pressure through the jet flow holes 323a' along a tangential direction of a circumference where the four pipe cylinders 323 are located and acts on the jet flow step 33a on the lamination 33, the lamination 33 is subjected to tangential impact force by the jet flow step 33a under the action of the raw water impact force, the lamination 33 is made to disturb a central axis of the lamination 33 to rotate rapidly, and then the lamination 33 and the lamination 33 rotate relatively to achieve a scrubbing effect, so that more than ninety-five percent of dirt accumulated on the lamination 33 can be scrubbed and removed by matching with the water impact effect, the lamination 33 is made to be in a clean state again, and a filtering effect for repeated use is improved. In addition, the water outlet 36 is arranged at the bottom, so that dirt can be easily discharged through a smooth flow passage, a certain negative pressure can be generated, and the rubbing effect of the lamination 33 is better.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" or "comprising 8230; \8230;" does not exclude additional elements from existing in a process, method, article, or terminal device that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

Although the embodiments have been described, once the basic inventive concept is known, other changes and modifications can be made to the embodiments by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all the modifications of the equivalent structure or equivalent flow path using the contents of the specification and the drawings of the present invention, or directly or indirectly using other related technical fields are also included in the scope of the present invention.

Claims (10)

1. The utility model provides a leading filter of high-efficient back flush multilayer lamination formula, includes valve body, main valve core, filtering component and valve rod, be provided with the case seat in the valve body, its characterized in that: an upper cavity and a lower cavity are arranged in the valve body, a one-way valve which can flow to the lower cavity in a one-way mode is assembled between the upper cavity and the lower cavity, three flow passages including a water inlet flow passage, a filter element inner cavity flow passage and a water outlet flow passage are arranged in the valve core seat, the upper ports of the three flow passages of the water inlet flow passage, the water outlet flow passage and the filter element inner cavity flow passage are all formed at the top of the valve core seat, the other end of the water inlet flow passage is connected with a water inlet pipe, and the other end of the water outlet flow passage is connected with a water outlet pipe;

the main valve core is arranged on the valve core seat and is used for communicating the upper parts of any two flow passages on the valve core seat,

the filter component comprises an outer barrel, a lamination frame, a plurality of laminations and an auxiliary valve core, wherein the lamination frame is coaxially arranged in the outer barrel, the plurality of laminations are sleeved outside the lamination frame in a lamination way, the outer part of the outer barrel, which is positioned at the lamination frame, forms an outer cavity, the outer cavity is communicated with the lower cavity, a water outlet is formed at the bottom end of the outer cavity, an inner cavity is formed in the lamination frame and is communicated with a flow passage of the inner cavity of the filter element, an overflow groove is formed at the peripheral side of the inner cavity, and the auxiliary valve core is arranged at the water outlet so as to open and close the water outlet;

the valve rod sequentially penetrates through the main valve core, the valve core seat, the inner cavity and the auxiliary valve core and is rotatably arranged, so that the main valve core and the auxiliary valve core are synchronously adjusted.

2. The high efficiency backflush multilayer lamination prefilter of claim 1 wherein: the main valve core comprises a driving sheet and a main fixed sheet, the main fixed sheet is fixedly installed on the valve core seat, the driving sheet and the main fixed sheet are sealed in a plane and rotate coaxially, three through holes sequentially communicated with a water inlet flow channel, a water outlet flow channel and a filter element inner cavity flow channel are formed in the main fixed sheet respectively, a blind hole is formed in the driving sheet, the blind hole can enable the upper portions of any two adjacent through holes in the main fixed sheet to be communicated, and the driving sheet is fixedly connected with the valve rod.

3. The high efficiency backflush multilayer lamination prefilter of claim 2 wherein: the auxiliary valve core comprises an auxiliary fixed piece and an auxiliary movable piece, the auxiliary fixed piece is fixedly installed at the water outlet and provided with a valve hole communicated with the water outlet, the auxiliary movable piece is sealed in plane and coaxially and rotatably arranged on the auxiliary fixed piece, and the auxiliary movable piece is fixedly connected with the valve rod.

4. The high efficiency backflush multilayer lamination prefilter of claim 3 wherein: the valve comprises a valve body, and is characterized by further comprising a shifting fork, wherein the shifting fork is rotatably arranged on the valve body and is arranged in the upper cavity, the driving sheet is fixedly arranged at the bottom of the shifting fork, and the shifting fork is fixedly connected with the valve rod.

5. The high efficiency backwash multi-layered laminated prefilter of claim 2 wherein: the three through holes on the main stator are all arc-shaped through holes and are distributed in a circular trisection manner.

6. The high efficiency backflush multilayer lamination prefilter of claim 2 wherein: the blind holes on the driving sheet are arc-shaped holes occupying two thirds of the circumference, and the driving sheet is also provided with arc-shaped through holes occupying one third of the circumference.

7. The high efficiency backwash multi-layered laminated prefilter of claim 1 wherein: the lamination frame includes circle seat, lamination supporting seat and bobbin, the top of going up the circle seat forms the inner port of filter core inner chamber runner intercommunication, a plurality of bobbin fixed mounting are in last circle seat bottom and are the hoop evenly distributed, the lamination supporting seat is movable from top to bottom and is set up in the bobbin below, and a plurality of bobbins and lamination supporting seat enclose jointly and synthesize the inner chamber forms between the adjacent bobbin the overflow groove, set up the spring between the bottom of lamination supporting seat and urceolus, the spring makes the upwards extrusion of lamination supporting seat and makes a plurality of laminations extrusion of cover at the bobbin periphery closely knit.

8. The high efficiency backflush multilayer lamination prefilter of claim 7 wherein: the pipe barrel is internally provided with a pipe cavity, the top of the pipe cavity is open, the bottom of the pipe cavity is sealed, the opening at the top of the pipe cavity is communicated with the inner port, a plurality of jet holes are vertically formed in the peripheral side of the pipe barrel, and the hole axis direction of the jet holes extends towards the tangential direction of the periphery where the plurality of pipe barrels are located.

9. The high efficiency backflush multilayer lamination prefilter of claim 8 wherein: and the top of the inner cavity is provided with a flow limiting valve core which is in one-way conduction from bottom to top in a floating way.

10. The high efficiency backflush multilayer lamination prefilter of claim 9 wherein: and the upper end and the lower end of the lamination are respectively provided with a jet flow step, and the end surface where the jet flow step is positioned faces the direction of the circle center of the lamination.

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