CN215841910U - Cleaning device and filtering device - Google Patents

Abstract

The utility model discloses a cleaning device and a filtering device, wherein the cleaning device is used for cleaning a filtering net and comprises a shell, a power part and a jet piece, the power part, the jet piece and the filtering net are all arranged in the shell, the jet piece is arranged in the filtering net, the power part drives the jet piece to rotate, and the jet piece acts on fluid in a rotating mode so that the fluid can wash the filtering net. The power part is utilized to drive the jet flow piece, the rotating jet flow piece generates jet flow, and the jet flow impacts impurities of the filter screen, so that the filter screen is cleaned. The use of the filter screen cleaning brush is also avoided, the pollution of the filter screen cleaning brush to fluid is avoided, and the replacement of the filter screen cleaning brush is further avoided.

Description

Cleaning device and filtering device

Technical Field

The utility model relates to the field of cleaning equipment, in particular to a cleaning device and a filtering device.

Background

The water inlet valve of the water heater is generally provided with a filter screen, after the water heater is used for a long time, the filter screen needs to be taken out for cleaning, otherwise, the filter screen is blocked, the blocked filter screen can increase the resistance of a circulating system of the water heater, and the water can be polluted. In areas with poor water quality, the speed of the filter screen for accumulating impurities is higher, and the frequency of taking out and cleaning the filter screen is higher. The method of manually removing the screen and cleaning also affects the normal use of the water heater circulation system, i.e., the hot water in the water heater cannot be used during the cleaning process. Meanwhile, the method for manually taking out and cleaning the filter screen has high technical level requirements, a user generally cannot operate the method by himself, and professional technicians are required to take out and clean the filter screen, so that time and labor are wasted.

Referring to fig. 1, a fully automatic hydrodynamic continuous brushing filter 90 is shown. The filter 90 includes a housing 11 having a water inlet 91 and a water outlet 92, a cylindrical filter screen 94 is disposed in the housing 11, and a hydrodynamic brush shaft 95, a hydrodynamic impeller 96, a radial support rod 97, and a filter screen cleaning brush 98 are disposed in the cylindrical filter screen 94. When water enters the tubular filter screen 94 from the water inlet pipe orifice, the hydrodynamic impeller 96 starts to drive the hydrodynamic brush shaft 95 to rotate under the action of flowing water, the hydrodynamic brush shaft 95 drives the radial support rod 97 to rotate, so that the filter screen cleaning brush 98 is driven to rotate, and the rotary filter screen cleaning brush 98 cleans the tubular filter screen 94. Since the filter cleaning brush 98 of the filter 90 continuously brushes the filter, resistance to water flow is inevitably increased. In addition, the filter screen cleaning brush 98 is inevitably worn during use, the water is polluted by the impurities generated by the wear, and the polluted water may damage the health of the user. As the filter screen cleaning brush 98 is worn, the problem of how to replace the filter screen cleaning brush 98 is still faced, and the use cost is high.

In addition, the blowoff valve 99 must be manually opened to discharge the washed foreign substances, which is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cleaning device and a filtering device, aiming at overcoming the defect that water is polluted by abrasion inevitably generated in the using process of a filter screen cleaning brush in the prior art.

The utility model solves the technical problems through the following technical scheme:

the utility model provides a cleaning device for wash the filter screen, cleaning device includes casing, power portion and efflux piece, power portion the efflux piece reaches the filter screen all is equipped with in the casing, the efflux piece is located in the filter screen, power portion drive efflux piece rotates, rotates ground efflux piece acts on the fluid to make the fluid wash the filter screen.

In this scheme, through structure more than adopting, utilize power portion drive efflux piece, pivoted efflux piece produces the efflux, and the efflux strikes the impurity of filter screen to accomplish the washing of filter screen. The use of the filter screen cleaning brush is also avoided, the pollution of the filter screen cleaning brush to fluid is avoided, and the replacement of the filter screen cleaning brush is further avoided.

Preferably, the jet piece comprises a barrel body, a plurality of through holes are formed in the side wall of the barrel body, fluid flows out of the through holes, and the power part is connected to the barrel body.

Preferably, the through holes are arranged at intervals along the circumferential direction of the barrel body;

and/or the through holes are arranged at intervals along the axial direction of the barrel body;

and/or the axis of the through hole is collinear with the straight line where the radius of the barrel body is located at the corresponding position.

Preferably, the cleaning device further comprises a circumferential limiting part, and the barrel body is rotatably connected to the shell through the circumferential limiting part.

Preferably, the circumferential limiting part comprises a limiting ring and a plurality of supporting pieces, the limiting ring is connected to the shell through the supporting pieces, and the barrel body is clamped in the limiting ring.

Preferably, the cleaning device further comprises a first flow limiting member and a second flow limiting member correspondingly arranged, the first flow limiting member is connected to the inner side surface of the shell, and the first flow limiting member is arranged between the cleaning device and the barrel body;

the second flow limiting piece is rotatably connected to the outer side surface of the barrel body; when the jet flow piece is in the rotating state, the second flow limiting piece is matched with the first flow limiting piece, so that fluid flows to the cleaning device through the barrel body.

Preferably, the first flow restriction member includes a plurality of first flow restriction plates arranged at intervals, and the first flow restriction plates are transversely arranged between the cleaning device and the barrel body;

the second flow limiting piece comprises a plurality of second flow limiting plates, and the second flow limiting plates are connected to the outer side face of the barrel body;

when the jet piece is in the rotating state, the second flow limiting plate blocks the interval between the first flow limiting plates, so that fluid flows to the cleaning device through the barrel body.

Preferably, the outer side surface of the first flow restriction plate is attached to the inner side surface of the shell, and the inner side surface of the first flow restriction plate is attached to the outer side surface of the barrel body;

the outer side surface of the second flow limiting plate is attached to the inner side surface of the shell, the inner side surface of the second flow limiting plate is attached to the outer side surface of the barrel body, and the two side surfaces of the second flow limiting plate are attached to the corresponding intervals between the first flow limiting plates.

Preferably, the cleaning device further comprises a connecting ring, the inner side surface of the second flow restriction plate is connected with the connecting ring, and the barrel body is rotatably connected with the connecting ring.

Preferably, the outer peripheral surface of the barrel body is provided with an accommodating groove, and the connecting ring is arranged in the accommodating groove.

A filter device comprising a cleaning device as described above.

In this scheme, through adopting above structure, can avoid impurity to get into the water heater, can also reduce water heater circulation system's use cost.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the utility model.

The positive progress effects of the utility model are as follows:

the utility model provides a filter equipment is through utilizing power portion drive efflux piece, and pivoted efflux piece produces the efflux, and the impurity of efflux impact filter screen to accomplish the washing of filter screen. The use of the filter screen cleaning brush is also avoided, the pollution of the filter screen cleaning brush to fluid is avoided, and the replacement of the filter screen cleaning brush is further avoided.

Drawings

Fig. 1 is a schematic structural diagram of a full-automatic hydrodynamic continuous brushing filter in the prior art.

Fig. 2 is an external view of a filter device according to a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a section of the filter device of fig. 2, wherein the fluidic member is in a rotating state.

Fig. 4 is a schematic structural view of a section of the filter device of fig. 2, wherein the fluidic member is in a stopped state.

Figure 5 is an enlarged partial schematic view of the filter apparatus of figure 4,

fig. 6 is a schematic structural view of a section of the filter device of fig. 2, wherein the fluidic member is in a rotating state.

Figure 7 is an enlarged partial schematic view of the filter assembly of figure 6,

fig. 8 is a schematic structural view of a part of components of the filter device of fig. 2.

Fig. 9 is a schematic view of a first restriction of the filter apparatus of fig. 8.

Fig. 10 is a schematic view of a second restriction of the filter apparatus of fig. 8.

Description of reference numerals:

filter 90

Water inlet 91

Water outlet 92

Housing 93

Cylindrical filter screen 94

Hydrodynamic brush shaft 95

Hydrodynamic impeller 96

Radial support bar 97

Filter screen cleaning brush 98

Blowoff valve 99

Filter apparatus 100

Housing 11

Inlet 12

An outlet 13

Drain outlet 14

Rivet 15

Filter part 20

Filter screen 21

Power section 30

Impeller assembly 31

Drive shaft 32

Guide vane wheel 33

Drive impeller 34

Cleaning device 40

Fluidic member 41

Barrel 42

Accommodating groove 422

Circumferential stopper 43

Stop ring 431

Support 432

First flow restriction 44

First current limiting plate 441

Second flow restriction 45

Second restrictor plate 451

Connecting ring 46

Differential pressure deformation part 50

Diaphragm 51

First linkage portion 60

Convex surface 61

Concave surface 62

Second linkage part 70

Accommodating chamber 71

Connecting plate 72

Inverted cylinder 73

Blowoff valve assembly 80

Link rod 81

Thin plate 811

Wedge block 812

Barrier 82

Abutting column 821

Plugging plate 822

Drive spring 83

First sliding surface 84

Second sliding surface 85

Detailed Description

The present invention will be more clearly and completely described below by way of examples in conjunction with the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 2 to 10, the present embodiment is a filtering apparatus 100 including a cleaning apparatus 40 as described below.

Cleaning device 40 can be used for washing filter screen 21, and cleaning device 40 includes casing 11, power portion 30 and efflux piece 41, and power portion 30, efflux piece 41 and filter screen 21 all are equipped with in the casing 11, and efflux piece 41 is located in filter screen 21, and power portion 30 drive efflux piece 41 rotates, and the ground that rotates efflux piece 41 acts on the fluid to make the fluid wash filter screen 21. By driving the jet member 41 by the power section 30, the rotating jet member 41 generates a jet which impacts the impurities of the filter screen 21, thereby completing the cleaning of the filter screen 21. The use of the filter screen 21 cleaning brush 98 is also avoided, the pollution of the filter screen 21 cleaning brush 98 to the fluid is avoided, and the replacement of the filter screen 21 cleaning brush 98 is further avoided.

As shown in fig. 2 to 10, the present embodiment is a filtering apparatus 100, which specifically includes: a housing 11, a filter unit 20, a power unit 30, and a cleaning device 40. The filter part 20 is arranged in the shell 11; the power part 30 is arranged in the shell 11, and the power part 30 drives the cleaning device 40 to rotate under the pushing of the fluid; the cleaning device 40 is arranged inside the filter part 20, and the cleaning device 40 is used for washing the filter part 20; the filter device 100 further includes: the differential pressure deformation part 50 and the first linkage part 60 and the second linkage part 70 which are correspondingly arranged; the first linkage portion 60 is connected with the power portion 30; the second linkage portion 70 is connected to the cleaning device 40; the differential pressure deformation part 50 is arranged on the filter part 20; the differential pressure deformation part 50 moves under the action of the differential pressure between the fluid pressure inside the filter part 20 and the fluid pressure outside the filter part 20, so that the cleaning device 40 is switched between a rotating state and a stopping state; when the cleaning device 40 is in a rotating state, the pressure difference deformation part 50 drives the first linkage part 60 and the second linkage part 70 to be in transmission connection, and the power part 30 drives the cleaning device 40 to rotate through the first linkage part 60 and the second linkage part 70; when the cleaning apparatus 40 is in a stopped state, the pressure difference deformation part 50 urges the first interlocking part 60 and the second interlocking part 70 to be separated from each other. The filter unit 20 is a filter screen 21.

When the filtering portion 20 is not blocked, the pressure difference borne by the pressure difference deformation portion 50 is small, the pressure difference deformation portion 50 drives the first linkage portion 60 and the second linkage portion 70 to be separated, and the power portion 30 stops driving the cleaning device 40 to rotate, so that the blockage of the cleaning device 40 to the fluid flow is reduced, and the fluid resistance is reduced. When the filtering part 20 is blocked, the pressure difference borne by the pressure difference deformation part 50 is large, the pressure difference deformation part 50 drives the first linkage part 60 and the second linkage part 70 to be in transmission connection, and the power part 30 drives the cleaning device 40 to rotate, so that the cleaning of the filtering part 20 is completed.

The filter device 100 may be used for filtering a fluid, which is generally a liquid, such as tap water, or the like, but may be a gas.

In one embodiment, the differential pressure deformation part 50 is connected to the second linkage part 70, and the differential pressure deformation part 50 pushes the second linkage part 70 to approach or separate from the first linkage part 60 to switch the cleaning device 40 between the rotation state and the stop state. The present embodiment can simplify the structural form of the filtering apparatus 100, and improve stability and reliability. In other embodiments, the differential pressure deformation may not be connected to the first linkage portion 60, and the related components need to be adjusted.

In the present embodiment, the first linkage portion 60 has a convex surface 61, the second linkage portion 70 has a concave surface 62 corresponding to the convex surface 61, and the first linkage portion 60 and the second linkage portion 70 engage with the concave surface 62 through the convex surface 61 to realize the transmission connection. Of course, the first linkage portion 60 may also have a concave surface 62, the second linkage portion 70 has a convex surface 61 corresponding to the concave surface 62, and the first linkage portion 60 and the second linkage portion 70 engage with the convex surface 61 through the concave surface 62 to realize the transmission connection. The present embodiment can efficiently switch between the transmission connection and the disconnection between the first interlocking part 60 and the second interlocking part 70.

As shown in fig. 8, the cross-section of the convex surface 61 and the cross-section of the concave surface 62 become larger in the direction in which the fluid flows into the cleaning device 40. The larger the pressure difference is, the larger the contact area between the second linkage part 70 and the first linkage part 60 driven by the pressure difference deformation part 50 is, so that the transmission connection can be realized more reliably, and the cleaning efficiency of the cleaning device 40 is improved.

In fig. 8, the second interlocking part 70 further includes a receiving cavity 71, the first interlocking part 60 is inserted into the receiving cavity 71, and a top surface inside the receiving cavity 71 is provided with a convex surface 61 or a concave surface 62. The accommodating cavity 71 can better improve the reliability of two transmission connections and avoid accidental disengagement.

In fig. 8, the second linkage 70 further includes a connecting plate 72, and the housing chamber 71 is connected to the washing device 40 through the connecting plate 72. This embodiment can improve the flexibility of the position between the cleaning device 40 and the second linkage 70.

The housing chamber 71 is detachably connected to the connecting plate 72; so that the installation of the first interlocking part 60 can be facilitated.

The accommodating cavity 71 may be specifically an inverted cylinder 73, a top surface of the inverted cylinder 73 is provided with a convex surface 61 or a concave surface 62, the first linkage portion 60 is inserted into the inverted cylinder 73, and a bottom of the inverted cylinder 73 is connected to the connecting plate 72. The inverted cylinder 73 can simplify the structural form of the housing chamber 71.

In other embodiments, the first and second linkage portions 60 and 70 may have other configurations, such as cooperating cross heads and cross recesses, and cooperating friction surfaces that are capable of transmitting torque between each other and variably engaging and disengaging when in contact.

As shown in fig. 2 to 8, the pressure difference deformation part 50 is a diaphragm 51, the diaphragm 51 is disposed at the bottom of the filter part 20, the diaphragm 51 is connected to the second linkage part 70, and the diaphragm 51 pushes the second linkage part 70 to be close to or far from the first linkage part 60, so as to switch the cleaning device 40 between the rotation state and the stop state. The diaphragm 51 is simple in structure and easy to install, and reliably pushes the second linkage portion 70 to approach or separate from the first linkage portion 60. In other embodiments, the differential pressure deformation portion 50 may also be made of other structures, such as other materials with elasticity, or a combination of an elastic member and a plate member, which only needs to be deformed under the action of the differential pressure to push the first linking portion 60.

Specifically, the diaphragm 51 has a circular shape, and the second interlocking part 70 is connected to the center of the circular diaphragm 51. The present embodiment can increase the displacement of the second linkage portion 70, and improve the reliability of the transmission connection with the first linkage portion 60.

In one embodiment, the specific material of the membrane 51 may be an organic membrane, an inorganic membrane, or a composite membrane formed by combining a plurality of materials. The diaphragm 51 only needs to be deformable under the action of the pressure difference, so that the first linkage portion 60 is pushed.

As shown in fig. 7-8, the cleaning device 40 includes a fluidic member 41, the power unit 30 drives the fluidic member 41 to rotate, the rotational fluidic member 41 acts on the fluid to flush the filter unit 20, and the second coupling unit 70 is connected to the fluidic member 41. The rotating jet member 41 generates a jet which impacts the foreign matter of the filter house 20, thereby completing the cleaning of the filter house 20. The use of the filter screen cleaning brush 98 is also avoided, the contamination of the fluid by the filter screen cleaning brush 98 is avoided, and the replacement of the filter screen cleaning brush 98 is further avoided. A jet is understood to be a column of fluid which, like an ejected arrow, cleans the filter house 20 well.

In this embodiment, the fluidic member 41 includes a barrel 42, a plurality of through holes are formed on a sidewall of the barrel 42, the fluid flows out of the through holes, and the second linkage portion 70 is connected to a bottom of the barrel 42. The through-holes can generate a jet flow, thereby efficiently achieving cleaning of the filter portion 20. In other embodiments, fluidic piece 41 may be prismatic, cubic, or the like. The position and shape of the through holes are not shown, and as a specific embodiment, the through holes may be circular holes, triangular holes, quadrilateral holes, and the like. The specific shape of the through-hole is not shown in fig. 7. As an embodiment, the cross-sectional area of the through holes may be set according to the size of the filter screen 21 of the filter part 20, for example, the diameter of the through holes may be 3 to 6 times the diameter of the meshes of the filter screen 21.

In one embodiment, the through holes are spaced along the circumference of the barrel 42; the through holes can also be arranged at intervals along the axial direction of the barrel body 42; the axis of the through hole is collinear with a line on which the radius of the tub 42 at the corresponding position is located. This embodiment can be more multi-angle, the omnidirectional realization is to the washing of filter house 20.

As shown in fig. 4 to 7, the filtering apparatus 100 further includes a circumferential stopper 43, and the tub 42 is rotatably connected to the housing 11 by the circumferential stopper 43. This embodiment can avoid staving 42 at the circumferential rocking of rotation in-process, noise abatement, improvement stability.

As a specific embodiment, the circumferential position-limiting portion 43 includes a position-limiting ring 431 and a plurality of supporting members 432, the position-limiting ring 431 is connected to the housing 11 through the supporting members 432, and the barrel 42 is clamped in the position-limiting ring 431. This embodiment simple structure realizes high-efficiently that circumference is spacing.

As shown in fig. 4-7, the filtering apparatus 100 further includes a first flow restriction 44 and a second flow restriction 45, the first flow restriction 44 is connected to the inner side of the casing 11, and the first flow restriction 44 is disposed between the filtering apparatus 100 and the tub 42; the second flow restriction 45 is rotatably connected to the outer side surface of the tub 42; when the washing device 40 is rotated, the second restriction 45 is engaged with the first restriction 44 to allow fluid to flow toward the filtering device 100 through the tub 42. This embodiment can improve the flow that flows through staving 42, and then improves fluidic intensity, improves the cleaning performance.

As a specific embodiment, the first flow restriction member 44 includes a plurality of first flow restriction plates 441 arranged at intervals, and the first flow restriction plates 441 are transversely disposed between the filtering apparatus 100 and the tub 42; the second flow restriction member 45 includes a plurality of second flow restriction plates 451, and the second flow restriction plates 451 are connected to the outer side of the barrel 42; when the washing device 40 is rotated, the second restriction plate 451 closes the space between the first restriction plates 441 to allow fluid to flow toward the filtering device 100 through the tub 42. This embodiment simple structure blocks the interval high-efficiently, makes fluid inflow staving 42, improves fluidic intensity, improves the cleaning performance.

As shown in fig. 9 and 10, preferably, the outer side surface of the first current-limiting plate 441 is attached to the inner side surface of the housing 11, and the inner side surface of the first current-limiting plate 441 is attached to the outer side surface of the barrel 42; the outer side surface of the second current limiting plate 451 is attached to the inner side surface of the housing 11, the inner side surface of the second current limiting plate 451 is attached to the outer side surface of the barrel 42, and both side surfaces of the second current limiting plate 451 are attached to the corresponding first current limiting plates 441 at intervals. The embodiment plugs the interval efficiently, promotes the fluid to flow into the barrel body 42, improves the strength of jet flow, and improves the cleaning effect.

In fig. 10, the filter device 100 further includes a coupling ring 46, the second restriction plate 451 is coupled to the coupling ring 46 at an inner side thereof, and the tub 42 is rotatably coupled to the coupling ring 46. This embodiment can improve the installation efficiency of the second restriction plate 451.

As shown in fig. 8, the barrel 42 has a receiving groove 422 on an outer circumferential surface thereof, and the connecting ring 46 is disposed in the receiving groove 422. This embodiment can improve the reliability of the attachment ring 46.

The first restriction 44 also serves to limit the range of movement of the second restriction 45 along the axis of the tub 42 when the cleaning apparatus 40 is in a rotated state. The embodiment can avoid overlarge moving range and improve the reliability.

As shown in fig. 5-10, the first current limiting plate 441 of the present embodiment includes a limiting ring 431 in the middle and 4 arc plates extending outward from the limiting ring 431, and 4 intervals are formed between the 4 arc plates. The second current-limiting plate 451 comprises a connecting ring 46 located in the middle and 4 arc-shaped plates extending outward from the connecting ring 46 and matching with the interval, and the connecting ring 46 of the second current-limiting plate 451 is rotatably clamped in the containing groove 422 of the barrel 42. The second choke plate 451 is movable with the barrel 42 in the axial direction thereof. The second current limiting plate 451 may be clamped in the space of the first current limiting plate 441, so as to form a barrier, prevent fluid from flowing in from the gap between the barrel 42 and the filter 20, and allow fluid to flow out from the barrel 42 as much as possible, thereby improving the strength of the jet flow and improving the cleaning effect.

In the present embodiment, the screen of the filter unit 20 is a cylindrical screen, and the axis of the tub 42 is collinear with the axis of the cylindrical screen. The filter mesh 21 of the cylindrical filter mesh is cylindrical, and the present embodiment can improve the effect of cleaning the filter portion 20.

As shown in fig. 3 to 5, the filter device 100 further includes a waste valve assembly 80, the housing 11 is provided with a waste discharge port 14, and the waste discharge port 14 passes through a sidewall of the housing 11 from the filter portion 20; the sewage valve assembly 80 comprises a linkage rod 81, a blocking piece 82 and a driving spring 83; one end of the linkage rod 81 is connected with the diaphragm 51, the other end of the linkage rod 81 abuts against the blocking piece 82, the blocking piece 82 is used for blocking the sewage discharge port 14, and the spring is arranged between the blocking piece 82 and the shell 11; when the cleaning device 40 is in a rotating state, the diaphragm 51 drives the linkage rod 81 to move away from the blocking member 82, and the spring pushes the blocking member 82 to move away from the sewage draining outlet 14, so that the fluid flows out of the sewage draining outlet 14. The embodiment can automatically realize the discharge of impurities and improve the practicability of the filtering device 100. And the normal use of the filtering apparatus 100 is not affected during the discharge of the foreign substances.

In fig. 4, one end of the linkage rod 81 facing the blocking member 82 is provided with a first sliding surface 84, one end of the blocking member 82 facing the linkage rod 81 is provided with a second sliding surface 85 corresponding to the first sliding surface 84, and when the cleaning device 40 is in a rotating state, the first sliding surface 84 slides relative to the second sliding surface 85, so that the linkage rod 81 is far away from the blocking member 82. This embodiment can improve the stability and reliability of opening stopper 82.

As an embodiment, the linkage rod 81 may include a thin plate 811 and a first sliding surface 84 facing the blocking member 82, and the first sliding surface 84 may be disposed on a wedge-shaped block 812 as shown in fig. 4. The blocking member 82 may include a blocking plate 822 and an abutting pillar 821, the second sliding surface 85 may be disposed at an end of the abutting pillar 821, and both the first sliding surface 84 and the second sliding surface 85 are inclined surfaces and can slide relative to each other when they contact each other. The blocking plate 822 is used for blocking the sewage discharge port 14. The sewage draining port 14 may be a double-layer pipe as shown in fig. 4, the driving spring 83 is sleeved outside the inner-layer pipe, the driving spring 83 abuts between the blocking plate 822 and the housing 11, when the wedge-shaped block moves downwards under the driving of the linkage rod 81, the driving spring 83 pushes the blocking member to be away from the sewage draining port 14, so that fluid and impurities can flow out from the sewage draining port 14. As an embodiment, the waste outlet 14 may be externally connected to a waste pipe.

As an embodiment, as shown in fig. 4 and 6, the linkage rod 81 is located between the diaphragm 51 and the barrel 42, and the diaphragm 51, the linkage rod 81 and the barrel 42 can be connected by a rivet 15, and the three can rotate relative to the rivet 15.

In one embodiment, the power unit 30 includes an impeller assembly 31 and a transmission shaft 32, the impeller assembly 31 is disposed at one end of the transmission shaft 32, and the other end of the transmission shaft 32 is disposed with the first linkage unit 60. This embodiment simple structure can wash raises the efficiency.

As shown in fig. 3 and 5, the impeller assembly 31 includes a guide impeller 33 and a driving impeller 34, the guide impeller 33 is fixedly disposed inside the casing 11, the guide impeller 33 is used for guiding the flow direction of the fluid, the end of the transmission shaft 32 is rotatably connected to the guide impeller 33, the driving impeller 34 is fixedly disposed on the transmission shaft 32, and the driving impeller 34 is used for driving the transmission shaft 32 to rotate. This embodiment can further improve the cleaning efficiency.

The embodiment can also be a water heater circulation system, which comprises a water heater and the above filtering device 100, wherein the filtering device 100 is connected to the water inlet 91 of the water heater. This embodiment can avoid impurity to get into the water heater, can also reduce the use cost of water heater circulation system.

Referring now to fig. 2-10, the fluid is selected to be tap water, and the arrows indicate the flow direction of the fluid, to briefly describe the operation of the filter device 100.

Tap water flows into the housing 11 from the inlet and drives the impeller assembly 31 to rotate. The tap water continues to flow into the filter unit 20, passes through the strainer 21, and then flows to the outlet 13.

Normally, when filter screen 21 is not blocked, only impeller assembly 31 rotates, and barrel 42 does not rotate. The waste valve assembly 80 is in a closed state. As shown in fig. 5 and 6.

If the filter screen 21 is blocked, the pressure difference between the two sides of the membrane 51 is increased, so that the membrane 51 deforms and moves downwards, as shown in fig. 3 and 4, so as to drive the barrel 42 to move downwards, the second linkage part 70 is in transmission connection with the first linkage part 60, and the impeller assembly 31 drives the barrel 42 to rotate, so as to generate jet flow to clean the filter part 20. Meanwhile, the linkage rod 81 moves downwards, and the blocking piece is far away from the sewage discharge port 14 under the action of the driving spring 83, so that the sewage discharge port 14 is opened, and fluid and impurities can flow out of the sewage discharge port 14.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.

Claims (11)

1. A cleaning device is used for cleaning a filter screen and is characterized by comprising a shell, a power part and a jet piece, wherein the power part, the jet piece and the filter screen are all arranged in the shell, the jet piece is arranged in the filter screen, the power part drives the jet piece to rotate, and the jet piece acts on fluid in a rotating mode so that the fluid washes the filter screen.

2. The cleaning apparatus defined in claim 1, wherein the fluidic member comprises a barrel having a plurality of apertures formed in a sidewall thereof through which fluid flows, the motive portion being coupled to the barrel.

3. The cleaning apparatus defined in claim 2, wherein the through-holes are spaced circumferentially of the bowl;

and/or the through holes are arranged at intervals along the axial direction of the barrel body;

and/or the axis of the through hole is collinear with the straight line where the radius of the barrel body is located at the corresponding position.

4. The cleaning apparatus defined in claim 2, further comprising a circumferential stop by which the bowl is rotatably connected to the housing.

5. The cleaning apparatus defined in claim 4, wherein the circumferential stop comprises a stop ring and a plurality of support members, the stop ring is connected to the housing via the support members, and the barrel is engaged in the stop ring.

6. The cleaning apparatus as claimed in claim 2, further comprising a first flow restriction and a correspondingly disposed second flow restriction, the first flow restriction being connected to an inner side of the housing, the first flow restriction being disposed between the cleaning apparatus and the bowl;

the second flow limiting piece is rotatably connected to the outer side surface of the barrel body; when the jet flow piece is in the rotating state, the second flow limiting piece is matched with the first flow limiting piece, so that fluid flows to the cleaning device through the barrel body.

7. The cleaning apparatus defined in claim 6, wherein the first restrictor comprises a plurality of first restrictor plates spaced apart from one another and disposed transversely between the cleaning apparatus and the bowl;

the second flow limiting piece comprises a plurality of second flow limiting plates, and the second flow limiting plates are connected to the outer side face of the barrel body;

when the jet piece is in the rotating state, the second flow limiting plate blocks the interval between the first flow limiting plates, so that fluid flows to the cleaning device through the barrel body.

8. The cleaning apparatus defined in claim 7, wherein an outer side of the first restrictor plate abuts an inner side of the housing, and wherein the inner side of the first restrictor plate abuts an outer side of the bowl;

the outer side surface of the second flow limiting plate is attached to the inner side surface of the shell, the inner side surface of the second flow limiting plate is attached to the outer side surface of the barrel body, and the two side surfaces of the second flow limiting plate are attached to the corresponding intervals between the first flow limiting plates.

9. The cleaning apparatus defined in claim 8, further comprising a coupling ring to which an inner side of the second restrictor plate is coupled, the bowl being rotatably coupled to the coupling ring.

10. The cleaning apparatus defined in claim 9, wherein the bowl has a receiving groove in an outer peripheral surface thereof, and the coupling ring is disposed in the receiving groove.

11. A filter device, characterized in that it comprises a cleaning device according to any one of claims 1-10.

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