CN117703138A

CN117703138A - Cleaning equipment and filtering mechanism

Info

Publication number: CN117703138A
Application number: CN202410023121.1A
Authority: CN
Inventors: 汪洋
Original assignee: Yuanding Intelligent Innovation International Co ltd
Current assignee: Yuanding Intelligent Innovation International Co ltd
Priority date: 2024-01-05
Filing date: 2024-01-05
Publication date: 2024-03-15

Abstract

The utility model relates to a clean technical field of water provides a cleaning equipment and filtering mechanism, and this cleaning equipment includes organism, filtering mechanism and running gear, sets up at least one water inlet on the organism, and filtering mechanism includes at least: the device comprises a first-stage filtering mechanism, a second-stage filtering mechanism and a fluid pumping device, wherein the first-stage filtering mechanism, the second-stage filtering mechanism and the fluid pumping device are sequentially connected, a water inlet is communicated with the first-stage filtering mechanism, water flow near the water inlet is pumped to the first-stage filtering mechanism and the second-stage filtering mechanism by suction force generated by the fluid pumping device to be filtered step by step, the size dimension of separating impurities from the water flow by the first-stage filtering mechanism is larger than that of separating the impurities from the water flow by the second-stage filtering mechanism, and at least one of the first-stage filtering mechanism and the second-stage filtering mechanism is a rotary separation filtering mechanism. The utility model discloses a filter step by step through filtering rivers, effectively improved cleaning equipment's filter effect.

Description

Cleaning equipment and filtering mechanism

Technical Field

The present disclosure relates to the field of water cleaning technology, and more particularly, to a cleaning apparatus and a filtering mechanism.

Background

The swimming pool can generate various impurities during use, including but not limited to dust, leaves, pollen, etc. falling into the water, and sand, soil, small stones, etc. deposited on the bottom of the pool. Therefore, the swimming pool needs to be cleaned regularly to maintain the clean and good water quality of the swimming pool. In practice, the cleaning work of the swimming pool can be completed manually or by using cleaning equipment, and compared with the manual work, the cleaning equipment does not need extra manpower, thereby reducing the work load of maintenance personnel of the swimming pool. However, the present swimming pool cleaning device has a certain filtering capability, but the type of impurities in the swimming pool is various, and the dimension of the impurities is different, while the filtering system of the swimming pool cleaning device has a single structure, so that the impurities are not thoroughly filtered, and the impurities with large dimension partially block the filter screen, so that the swimming pool cleaning effect is not ideal.

Disclosure of Invention

The utility model aims at providing a cleaning device and filtering mechanism to solve the technical problem that current swimming pool cleaning device cleaning effect is not ideal.

In order to achieve the above purpose, the technical scheme adopted in the present disclosure is as follows:

In one aspect, the present disclosure provides a cleaning apparatus, including a machine body, a filtering mechanism and a travelling mechanism, at least one water inlet is disposed on the machine body, and the filtering mechanism at least includes: the device comprises a first-stage filtering mechanism, a second-stage filtering mechanism and a fluid pumping device, wherein the first-stage filtering mechanism, the second-stage filtering mechanism and the fluid pumping device are sequentially connected in cascade, the water inlet is communicated with the first-stage filtering mechanism, water flow near the water inlet is pumped to the first-stage filtering mechanism and the second-stage filtering mechanism by suction force generated by the fluid pumping device to be filtered step by step, the size dimension of separating impurities from the water flow by the first-stage filtering mechanism is larger than that of separating the impurities from the water flow by the second-stage filtering mechanism, the first-stage filtering mechanism is an inertial separation filtering mechanism, and the second-stage filtering mechanism is a rotary separation filtering mechanism.

In some preferred embodiments, the inertial separation filter mechanism comprises at least two straight fluid channels and an impurity accommodating cavity, the at least two straight fluid channels are vertically arranged above the impurity accommodating cavity along the length direction, the at least two straight fluid channels are in end-to-end bending communication side by side, two ends of the straight fluid channels after the communication are respectively communicated with the water inlet and the second-stage filter mechanism, the straight fluid channels are provided with openings at bending communication positions near one side of the impurity accommodating cavity, and the inner walls of the straight fluid channels around the openings are conical walls.

In some preferred embodiments, the two adjacent straight fluid channels are bent at an angle greater than 90 ° in the bent communication position.

In some preferred embodiments, the taper of the tapered wall is 10 ° -20 °.

In some preferred embodiments, the rotary separation filter mechanism comprises at least: the device comprises an outer side rotational flow space, a filter screen and an inner side rotational flow space, wherein the outer side rotational flow space is arranged on the outer side of the filter screen and is communicated with a first-stage filtering mechanism, water flow output by the first-stage filtering mechanism enters the outer side rotational flow space to generate primary rotational movement so as to separate water flow which cannot pass through the filter screen, the inner side rotational flow space is arranged on the inner side of the filter screen and is communicated with the fluid pumping device, and water flow entering the inner side rotational flow space through the filter screen generates secondary rotational movement so as to separate impurities in the water flow.

In some preferred embodiments, the rotary separation filter mechanism further comprises: the filter screen cleaning device comprises a vibrating device, an eccentric part and a connecting piece, wherein the vibrating device is fixedly arranged at one axial end of a filter screen, the eccentric part is connected to an output shaft of the vibrating device and rotates along with the vibrating device, and the connecting piece is respectively connected with the eccentric part and the filter screen.

In some preferred embodiments, the rotary separation filter mechanism further comprises: the filter screen cleaning device is closely attached to the outer side wall or/and the inner side wall of the filter screen, and the filter screen cleaning device and the filter screen can axially reciprocate or rotate relatively.

In some preferred embodiments, the screen cleaning device includes a brush bar that is affixed to the side wall of the screen

In some preferred embodiments, the filter screen cleaning device further comprises an impeller, wherein the impeller is arranged at a position where the water inlet flow channel is communicated with the outside rotational flow space and is fixed in a rotating way along the axial direction of the filter screen, and the brush bar is fixedly connected with the impeller or the impeller drives the brush bar to rotate.

In some preferred embodiments, the number of brush bars is at least one, each brush bar being disposed in a parallel, oblique or circumferential manner relative to the axial direction on the side wall of the filter screen.

In another aspect, the present disclosure also provides a filter mechanism applied to a cleaning apparatus, the filter mechanism at least including: the device comprises a first-stage filtering mechanism, a second-stage filtering mechanism and a fluid pumping device, wherein the first-stage filtering mechanism, the second-stage filtering mechanism and the fluid pumping device are sequentially connected in cascade, the water inlet is communicated with the first-stage filtering mechanism, the fluid pumping device generates a suction force to pump water flow from the vicinity of the water inlet to the first-stage filtering mechanism and the second-stage filtering mechanism for step-by-step filtering, the size dimension of impurities separated from the water flow by the first-stage filtering mechanism is larger than the size dimension of impurities separated from the water flow by the second-stage filtering mechanism, the first-stage filtering mechanism is an inertial separation filtering mechanism, and the second-stage filtering mechanism is a rotary separation filtering mechanism.

In some preferred embodiments, the first stage filtration mechanism is an inertial separation filtration mechanism and the second stage filtration mechanism is a rotary separation filtration mechanism; the inertial separation filtering mechanism comprises at least two straight fluid channels and an impurity accommodating cavity, wherein the at least two straight fluid channels are vertically arranged above the impurity accommodating cavity along the length direction, the at least two straight fluid channels are in end-to-end bending communication side by side, two ends of the communicated straight fluid channels are respectively communicated with a water inlet and a second-stage filtering mechanism, an opening is arranged at a bending communication position close to one side of the impurity accommodating cavity of the straight fluid channels, and the inner wall of the straight fluid channels around the opening is a conical wall; the rotary separation filter mechanism comprises at least: the device comprises an outer side rotational flow space, a filter screen and an inner side rotational flow space, wherein the outer side rotational flow space is arranged on the outer side of the filter screen and is communicated with a first-stage filtering mechanism, water flow output by the first-stage filtering mechanism enters the outer side rotational flow space to generate primary rotational movement so as to separate water flow which cannot pass through the filter screen, the inner side rotational flow space is arranged on the inner side of the filter screen and is communicated with the fluid pumping device, and water flow entering the inner side rotational flow space through the filter screen generates secondary rotational movement so as to separate impurities in the water flow.

In some preferred embodiments, the rotary separation filter mechanism further comprises: the filter screen cleaning device comprises an impeller and a brush strip, wherein the impeller is arranged at the position where a water flow inlet runner is communicated with an outside rotational flow space and is fixed in a rotating way along the axial direction of the filter screen, the brush strip is arranged along the axial direction of the filter screen and is clung to the side wall of the filter screen, the brush strip is fixedly connected with the impeller or the impeller drives the brush strip to rotate, and when water flows in the outside rotational flow space, the impeller is driven to rotate, so that the impeller drives the brush strip to circumferentially rotate along the side wall of the filter screen to erase impurities on the side wall.

The beneficial effect of the cleaning equipment that this disclosure provided lies in at least: the first-stage filtering mechanism and the second-stage filtering mechanism on the cleaning equipment are used for filtering the water flow pumped by the fluid pumping device from the water inlet step by step, and filtering and separating impurities in the water flow according to the order of the dimension from large to small, so that the impurities in the water flow can be filtered more thoroughly, and the filtering effect of the cleaning equipment is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are required for the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view of a cleaning apparatus provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of the overall structure of a filtering mechanism provided by an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of an electronic control unit according to an embodiment of the disclosure;

FIG. 4 is a cross-sectional view of an inertial separation filter mechanism provided by an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of a rotary separation filter mechanism provided by an embodiment of the present disclosure;

FIG. 6 is an exploded view of a rotary separation filter mechanism provided by an embodiment of the present disclosure;

FIG. 7 is a schematic view of a screen cleaning apparatus in a rotary separation filter mechanism according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of another screen cleaning apparatus in a rotary separation filter mechanism according to an embodiment of the present disclosure;

FIG. 9 is a schematic view of a still further screen cleaning apparatus in a rotary separation filter mechanism provided in accordance with an embodiment of the present disclosure;

fig. 10 is a partial cross-sectional view of a cross-sectional view of another rotary separation filter mechanism provided by an embodiment of the present disclosure.

Wherein, each reference sign in the figure:

100. a cleaning device; 110. a body; 111. a water inlet; 112. an electronic control unit; 120. a walking mechanism; 130. a filtering mechanism; 131. a first stage filtration mechanism; 1311. a straight fluid channel; 1312. an impurity receiving chamber; 132. a second stage filtration mechanism; 1321. a water inlet flow passage; 1322. a water outlet flow passage; 1323. a filter screen; 1324. an outside swirl space; 1325. an inner side swirl space; 1326. a bottom cover; 1327. a top cover; 133. a fluid pumping device; 134. a filter screen cleaning device; 1341. a vibration device; 1342. an eccentric member; 1343. a connecting piece; 1344. an impeller; 1345. and (5) brushing the strip.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present disclosure more clear, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present disclosure.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.

Referring to fig. 1 and 2, fig. 1 is a schematic view of a cleaning apparatus according to an embodiment of the disclosure, at least including: the machine body 110, running gear 120 and filtering mechanism 130, running gear 120 is used for cleaning equipment to remove at the bottom of the pool and the pool wall of swimming pool, is provided with at least one water inlet 111 on the machine body 110, and filtering mechanism 130 is connected with water inlet 111 for in the water suction near water inlet 111 filters the mechanism 130 and discharges outside the machine, and this filtering mechanism 130 includes at least: the first-stage filter mechanism 131, the second-stage filter mechanism 132 and the fluid pumping device 133, the first-stage filter mechanism 131 and the second-stage filter mechanism 132 are cascaded in sequence, the first-stage filter mechanism 131 is connected with the water inlet, the fluid pumping device 133 is connected with the second-stage filter mechanism 132 and is used for generating suction force for water flow from the water inlet to sequentially pass through the first-stage filter mechanism 131 and the second-stage filter mechanism 132, the size dimension of impurities separated by the first-stage filter mechanism 131 is larger than that of impurities separated by the second-stage filter mechanism 132, and at least one of the first-stage filter mechanism 131 and the second-stage filter mechanism 132 is a rotary separation filter mechanism. For example, in one embodiment, the first stage filter mechanism 131 and the second stage filter mechanism 132 may each be a rotary separation filter mechanism; in another embodiment, the first stage filter mechanism 131 is an inertial separation filter mechanism and the second stage filter mechanism 132 is a rotary separation filter mechanism.

The working principle of the filtering mechanism in the cleaning equipment is as follows: the water flow near the water inlet is pumped to the first stage filtering mechanism 131 and the second stage filtering mechanism 132 of the filtering mechanism by the fluid pumping device 133 for step-by-step filtering, along with the advancing of the water flow, the dimension of the filtered impurities in each stage is smaller and smaller, and the impurities in the water flow are smaller and smaller after the multi-stage filtering, so that the thorough filtering of the impurities in the water flow is realized.

It can be seen that, according to the technical scheme provided by the embodiment of the present disclosure, the first stage filtering mechanism 131 and the second stage filtering mechanism 132 on the cleaning device are used for filtering the water flow pumped from the water inlet by the fluid pumping device 133 step by step, and filtering and separating the impurities in the water flow according to the order from large to small in the dimension, so that the impurities in the water flow can be filtered more thoroughly, thereby effectively improving the filtering effect of the cleaning device.

The body 110 is an integral frame of the cleaning device 100 and may include, but is not limited to, a body housing, an electronic control unit 112, and various sensors, the body 110 serving as a core of the cleaning device 100 and being responsible for controlling the movement of the cleaning device 100, cleaning operations, and the like.

The housing provides mounting locations for the running gear 120, the filter mechanism 130, etc., so that the electronic control unit, various sensors, the filter mechanism 130, and the running gear 120 can be assembled together to form a complete cleaning apparatus 100. Optionally, the body shell can further comprise a sealing bin, and the sealing bin can be used for installing various electronic devices, preventing the electronic devices from contacting water and ensuring the safety of the electronic devices. For example, the sealing compartment may be a motor compartment disposed between the traveling mechanisms 120 at both sides of the cleaning apparatus 100 at a position near one end in the traveling direction, for accommodating and mounting the constituent components such as the fluid pumping device 133 and the motor.

As shown in fig. 3, the electronic control unit 112 may specifically include a processor, a memory, a communication interface, a control algorithm, software, and the like, where the control algorithm and the software are implemented as computer programs and stored in a storage, and when the computer programs corresponding to the control algorithm and the software run on the processor, the functions of movement, cleaning operation, navigation, and the like of the cleaning robot can be implemented. Furthermore, a communication interface is connected to the processor, which enables both internal data communication between the processor of the content of the cleaning device 100 and the running gear 120, the filtering mechanism 130 and the sensors, and data communication between the cleaning device 100 and external devices, e.g. the communication interface allows the electronic control unit 112 to communicate with a remote control or a smart phone application for remote control of the cleaning device 100.

The sensors are used to sense information about the cleaning device 100 and its surroundings, including but not limited to distance sensors, tilt sensors, touch sensors, etc., which provide data regarding the shape of the pool, the location of obstacles, and the current status of the cleaning device 100. Of course, the sensors may be increased or decreased in practice according to the needs of the functions of the cleaning apparatus 100 itself, and the embodiments of the present disclosure are not limited in the types, numbers, sizes, etc. of the sensors.

The water inlet 111 may be provided at the bottom of the cleaning apparatus 100, or may be provided at the side or top of the cleaning apparatus 100. For example, if the water inlet 111 is provided at the bottom of the cleaning apparatus 100, when the cleaning apparatus 100 walks on the bottom or wall of the tank, the water flow around the moving path may be sucked into the filtering mechanism 130 through the water inlet 111 to be filtered during the movement of the cleaning apparatus 100; in addition, if the water inlet 111 is provided at the side or top of the cleaning apparatus 100, when the cleaning apparatus 100 cleans a swimming pool along the waterline at the water surface, water around the water inlet 111 at the side or top may be sucked into the filtering mechanism 130 to be filtered. The water inlet 111 may be provided as a normally open port or an openable and closable port, and the number thereof is at least one, which is not limited in the embodiment of the present disclosure.

The running gear 120 enables the cleaning device 100 to move over the floor or wall of the tank, and the specific embodiment of the running gear 120 is not exclusive. For example, in fig. 1, the traveling mechanism 120 may be configured to move the cleaning device 100 on the bottom or the wall of the tank by means of tracks, that is, the traveling mechanism 120 includes two sets of tracks, where two sets of tracks are disposed on two sides of the machine body 110, and the number of tracks in each set may be one, and in addition, the traveling mechanism 120 may further include a driving mechanism and a transmission mechanism, where the driving mechanism is coupled to each set of tracks by the transmission mechanism, and the driving mechanism may be a driving source such as a motor, and the transmission mechanism may be a gear set formed by one or more assemblies such as a gear, a rack, or a screw, so as to transmit the driving force of the driving mechanism to the tracks, and rotate the tracks to implement the movement of the cleaning device 100 on the bottom or the wall of the tank. Of course, the running mechanism 120 may be implemented in other structures, for example, the running mechanism 120 is implemented to move the cleaning device 100 on the bottom or the wall of the pool by means of wheels, and the principle is similar to that of the track, which is not described herein.

The specific implementation manners of the inertial separation filter mechanism and the rotary separation filter mechanism are not unique, and several embodiments of the inertial separation filter mechanism and the rotary separation filter mechanism are given below for reference.

As shown in fig. 4, a cross-sectional view of an inertial separation filter mechanism according to an embodiment of the present disclosure includes: at least two straight fluid channels 1311 and an impurity accommodating cavity 1312, at least two straight fluid channels 1311 are vertically arranged above the impurity accommodating cavity 1312 along the length direction, at least two straight fluid channels 1311 are in end-to-end bending communication side by side, two ends of the straight fluid channels 1311 after the end-to-end bending communication are respectively communicated with the water inlet and the second stage filtering mechanism 132, an opening is arranged at a bending communication position of the straight fluid channels 1311 close to one side of the impurity accommodating cavity 1312, and the inner wall of the straight fluid channels 1311 around the opening is a conical wall.

The working principle of the inertial separation filtering mechanism is as follows: the water flow turns when passing through the bending positions of the plurality of straight fluid channels 1311, if the water flow contains impurities with larger dimension, the inertia of the turning is not equal to that of the water flow, so that under the action of self gravity and inertia, the impurities with larger dimension fall into the impurity receiving cavity 1312 from the opening at the water flow turning position, namely the bending position of the adjacent straight fluid channels 1311, and the first-stage filtering separation of the impurities from the water flow is realized.

The greater the number of straight fluid channels 1311, the better the filtering effect on impurities in the water flow, and thus the filtering effect at the first stage filtering mechanism 131 can be improved by increasing the number of straight fluid channels 1311. However, the greater the number of straight fluid channels 1311, the greater the resistance to flow, i.e., the slower the flow rate of the water flow, and thus the poorer the inertial separation. Therefore, the number of the straight fluid channels 1311 may be actually selected according to the requirements of the application scenario, for example, four straight fluid channels 1311 in fig. 4 correspond to two curved communication positions on the side close to the impurity receiving cavity 1312, that is, two openings are in communication with the impurity receiving cavity 1312.

According to the embodiment of the disclosure, the inertial separation filter mechanism is used as the first stage filter mechanism 131 to perform first filtration on water flow, and impurities with larger dimension are separated from the water flow by utilizing the principle that the inertia of the larger dimension in the water flow is not as good as that of the water flow when the impurities pass through the inertial separation filter mechanism, so that coarse filtration on the water flow is realized.

Specifically, since the straight fluid channels 1311 are arranged in a side-by-side manner, the water flow is diverted at the curved communication position of two adjacent straight fluid channels 1311, and impurities of a larger dimension are separated out in order to reduce the resistance of the water flow to be diverted at the curved communication position. Alternatively, two adjacent straight fluid channels 1311 are configured as one tubular channel or channel with circular cross section, a partition is arranged between the two adjacent straight fluid channels 1311, that is, a partition is arranged in the tubular channel or channel with circular cross section along the water flow direction, and the two adjacent straight fluid channels 1311 are configured as conical on the side close to the impurity receiving cavity 1312, and are provided with openings at end positions, so that the water flow generates a certain rotation movement when passing through the bending communication positions of the two adjacent straight fluid channels 1311, thereby better separating impurities from the openings. Further, the two adjacent straight fluid channels 1311 have conical shapes with a conicity of 10 ° -20 ° on the side near the impurity receiving cavity 1312, which also corresponds to a conicity of 10 ° -20 ° on the inner wall around the opening, including but not limited to 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, 19 ° or 20 °. Alternatively, two adjacent straight fluid channels 1311 may have a conical taper of 15 °, 16 ° or 17 ° on the side adjacent to the impurity receiving cavity 1312.

The bend angle of two adjacent straight fluid channels 1311 in the bent communication position should be greater than 90 °, for example, the bend angle may be 90 °, 100 °, 110 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, or 180 °. Alternatively, as shown in fig. 4, two adjacent straight fluid channels 1311 have a bend angle of 180 ° in the bent communication position.

As shown in fig. 5, a cross-sectional view of a rotary separation filter mechanism according to an embodiment of the present disclosure includes at least:

the water inlet flow passage 1321, the water outlet flow passage 1322, the filter screen 1323, the outside swirl space 1324 and the inside swirl space 1325, the outside swirl space 1324 is communicated with the first stage filtering mechanism through the water inlet flow passage 1321, the outside swirl space 1324 is arranged at the outer side of the filter screen 1323 and is used for enabling fluid to perform one-time rotation motion in the outside swirl space 1324 to separate part of the large garbage in the garbage from the fluid, the large garbage is collected at the lower part of the outside swirl space, the inside swirl space 1325 is arranged at the inner side of the filter screen 1323 and is at least one in number, the inside swirl space 1325 comprises a fluid inlet and a fluid outlet, the fluid outlet is communicated with the water outlet flow passage 132, the fluid passing through the filter screen 1323 enters the inside swirl space 1325 along the fluid inlet and is discharged from the fluid outlet after being separated through the inside swirl space 1325, the fluid outlet flow passage 1323 is communicated with the fluid pumping device 133, and the fluid pumping device is used for generating pumping force to sequentially pump the fluid near the water inlet 111 to the first stage filtering mechanism 131 and the second stage filtering mechanism 132 and then flows out.

According to the embodiment of the disclosure, the impurities with larger sizes are separated by utilizing the rotary motion of the water flow in the outer side rotational flow space 1324, and the impurities with smaller sizes are separated by utilizing the rotary motion of the water flow in the inner side rotational flow space 1325, so that the aperture of the filter screen 1323 can be designed to be relatively larger to allow the impurities which are not separated in the outer side rotational flow space 1324 to enter the inner side rotational flow space 1325 again through the filter screen 1323 for secondary separation, layered filtering of the water flow sucked into the filtering mechanism is realized, the risk that the filter screen 1323 is blocked can be effectively reduced, the filtering effect of the filtering mechanism 130 of the cleaning device 100 is not influenced by the blocking of the filter screen, and the stability of the filtering function on the cleaning device 100 is improved.

Specifically, the water inlet flow passage 1321 and the water outlet flow passage 1322 mainly play a role of water flow guiding, and the water flow inlet flow passage 1321 is used for guiding the water flow output from the first stage filtering mechanism 131 to a position above the outer cyclone space, so as to ensure that the water flow can enter from the position above the outer cyclone space 1324, so that the water flow generates rotary motion in the outer cyclone space, the mass of impurities with larger dimension is also larger, and the centrifugal force is also larger, so that the impurities with larger dimension can be centrifuged to the inner wall of the outer cyclone space 1324 to collide, and fall into the bottom of the outer cyclone space 1324 under the action of the gravity of the impurities, thereby realizing the effect of separating the impurities with larger dimension from the water flow. In addition, the water outlet flow passage 1322 is connected above the inner cyclone space 1325, and the water flow passing through the filter screen 1323 enters the inner cyclone space 1325 to generate rotary motion, so that impurities in the water flow are further separated, the separated impurities fall into the bottom of the inner cyclone space 1325, and the water flow flows out from the water outlet flow passage 1322 above, so that the effective separation of the water flow and the impurities is realized. It can be seen that good water flow routing through the water inlet flow path 1321 and the water outlet flow path 1322 helps to maximize the use of the suction force created by the fluid pumping device 133, thereby improving the cleaning efficiency of the water flow in the filtration mechanism.

An exploded view of a rotary separation filter mechanism provided by embodiments of the present disclosure, as shown in fig. 6, a filter screen 1323 is interposed between an outer swirl space 1324 and an inner swirl space 1325, the shape of the filter screen 1323 including, but not limited to, cylindrical, conical, prismatic, and the like. In this embodiment, the filter screen 1323 is preferably cylindrical in shape. The filter screen 1323 is provided with a plurality of meshes, and the sizes of the meshes can be set according to specific application scenarios, which is not limited in the disclosure.

As shown in fig. 5 and 6, the outer swirling space 1324 and the inner swirling space 1325 are mainly based on the swirling effect, and the function of separating impurities in the water flow is achieved by guiding the water flow to form a vortex or a swirling flow. Thus, the shape of the outer and inner swirl spaces 1324, 1325 may be implemented as structures that direct the flow of water to form a vortex or swirl, including but not limited to a rotating body. For example, each of the outer and inner swirl spaces 1324 and 1325 may be any of the following structures: circular swirl chamber, spiral swirl chamber, rectangular swirl chamber, conical swirl chamber, annular swirl chamber or profiled swirl chamber. Alternatively, in some embodiments, the outer swirling space 1324 is a circular swirling chamber, the inner swirling space 1325 is a conical swirling chamber, and in order to make the most of the internal space of the complete machine, the outer swirling space 1324 may be a rectangular space with rounded corners. Of course, in practice, the shapes of the outer and inner swirl spaces 1324 and 1325 are generally designed according to specific engineering requirements and principles of water flow mechanics, so the selection of the shapes may vary from application to application, and the embodiments of the present disclosure are not limited thereto.

Although the mesh diameter of the filter screen 1323 in the above-described rotary separation filter mechanism may be designed to be relatively larger to prevent clogging. However, due to the uncertainty of the size of impurities in the water body, some impurities with the size similar to that of the mesh are stuck on the mesh, so that a few meshes are blocked. Accordingly, in order to further reduce the risk of clogging the mesh on the filter screen 1323, some preferred embodiments are given below.

In some embodiments, as shown in fig. 7, the above-described rotary separation filter mechanism further comprises: the filter screen cleaning device 134, the filter screen cleaning device 134 includes a vibrating device 1341, an eccentric member 1342 and a connecting piece 1343, the vibrating device 1341 is fixedly arranged at one axial end of the filter screen 1323, the eccentric member 1342 is connected to an output shaft of the vibrating device 1341 and rotates along with the vibrating device 1341, and the connecting piece 1343 is connected with the eccentric member 1342 and the filter screen 1323 respectively.

Specifically, the vibration means 1341 may be implemented as a vibration motor, and the eccentric 1342 may be implemented as an eccentric wheel or an eccentric mass, and when the vibration motor rotates, an unbalanced centrifugal force is generated due to the eccentric effect, causing vibration and transmitting the vibration force to the filter screen 1323 through the eccentric 1342, causing foreign substances attached to the filter screen 1323 to be detached. Wherein the connection 1343 includes, but is not limited to, a straight bar, a curved bar, a spring, or a knuckle assembly, etc. For example, when the connecting rod comprises a straight rod, it is directly connected to the eccentric wheel or eccentric mass of the vibration motor and extends to the screen area. However, when the connecting rod includes a curved rod, the curved rod may be of curved or arcuate design to accommodate a particular machine configuration or screen layout. When the connecting rod includes a spring, the spring can provide some flexibility and shock absorbing effect, helping to prevent excessive vibration from being transferred to other components. Of course, in practice, the specific connection between the vibration device 1341, the eccentric 1342 and the connecting piece 1343 may include a threaded connection, a pin connection or other mechanical connection to ensure that the connection is firm and can effectively transmit the vibration force to the filter screen 1323, and the vibration device 1341, the eccentric 1342 and the connecting piece 1343 may have other structures, which is not limited to the above-mentioned exemplary embodiments.

In some embodiments, as in fig. 8, the above-described rotary separation filter mechanism further comprises: the filter screen cleaning device 134 is disposed closely to the outer side wall or/and the inner side wall of the filter screen 1323, and the filter screen cleaning device 134 and the filter screen 1323 can reciprocate axially relative to each other.

Specifically, the specific embodiment of the filter screen cleaning device 134 that moves axially and reciprocally with respect to the filter screen 1323 to clean the filter screen 1323 is not limited to this, and includes, but is not limited to, an axial driving device and a scraping brush, where the scraping brush is disposed along a sidewall of the filter screen 1323 and connected to the axial driving device, and the axial driving device generates a driving force along an axial direction of the filter screen 1323 to drive the scraping brush to move axially and reciprocally, and during the moving process, the scraping brush rubs against the sidewall of the filter screen 1323 relatively to scrape impurities attached to the mesh, so that the mesh is kept in a dredged state, and a situation that the filter screen 1323 is blocked is avoided.

For example, the axial driving device may be an air cylinder or a hydraulic cylinder, the scraping brush is an annular brush bar, and since the water flow moves from the outer swirling space 1324 to the inner swirling space 1325, the scraping brush may preferably be sleeved on the outer side wall of the filter screen 1323, and when the air cylinder or the hydraulic cylinder reciprocates, the annular brush bar is driven to axially move on the outer side wall of the filter screen 1323, so that impurities adsorbed on the mesh holes are scraped off, and an effect of cleaning the filter screen 1323 is achieved. Wherein the number of the scraping brushes is at least one, and the scraping brushes are preferably annular brush strips, and when the number is two or more, the scraping brushes are axially arranged along the filter screen 1323 at intervals. It can be understood that the more the number of the brushes, the shorter the stroke of the axial movement, and conversely, the longer the stroke of the axial movement, the more reasonable the setting can be actually performed according to the scene requirement, which is not limited by the embodiment of the present disclosure.

In some embodiments, as shown in fig. 9, the above-described rotary separation filter mechanism further comprises: the filter screen cleaning device 134 is disposed adjacent to an outer sidewall or/and an inner sidewall of the filter screen 1323, and the filter screen cleaning device 134 and the filter screen 1323 are rotatable axially relative to each other.

Specifically, the particular embodiment of the filter screen cleaning device 134 that rotates relative to the side wall of the filter screen 1323 to clean the filter screen 1323 is not exclusive and includes, but is not limited to: the filter screen cleaning device 134 is fixed and the filter screen 1323 is rotatable; or the filter screen 1323 is fixed and the filter screen cleaning device 134 is rotatable. Both the two modes can realize the relative rotation between the filter screen cleaning device 134 and the filter screen 1323, and when the relative rotation occurs, the filter screen cleaning device 134 which is clung to the side wall (comprising the inner side wall and the outer side wall) of the filter screen 1323 scrapes off impurities adsorbed on the meshes through friction contact, thereby playing the role of cleaning the filter screen 1323.

For example, for the application scenario that the filter screen cleaning device 134 is fixed and the filter screen 1323 is rotatable, the filter screen cleaning device 134 includes a brush bar and a motor, the brush bar is fixedly connected to the outer side rotational flow space 1324 or the inner side rotational flow space 1325 and is tightly attached to a side wall (including the outer side wall and the inner side wall) of the filter screen 1323, the motor is located at one axial end of the filter screen 1323 and is fixedly connected to the outer side rotational flow space 1324 or the inner side rotational flow space 1325, the filter screen 1323 is rotatably connected to an output shaft of the motor, and when the motor rotates, the filter screen 1323 can be driven to rotate, so that the brush bar erases impurities attached to the filter screen 1323.

For another example, for the scenario that the filter screen 1323 is fixed and the filter screen cleaning device 134 is rotatable, the filter screen cleaning device 134 includes a brush bar and a motor, the brush bar is tightly attached to a side wall (including an outer side wall and an inner side wall) of the filter screen 1323 and is rotationally connected with an output shaft of the motor, the motor is located at one axial end of the filter screen 1323 and is fixedly connected to the outer side rotational flow space 1324 or the inner side rotational flow space 1325, the filter screen 1323 is fixedly connected between the outer side rotational flow space 1324 and the inner side rotational flow space 1325, and when the motor rotates, the brush bar can be driven to rotate along the side wall of the filter screen 1323, so that impurities attached to the filter screen 1323 are erased by the brush bar.

In the two embodiments of the above-mentioned relative rotation scenario, the motor is used to provide the active driving force to drive the brush strip or the filter screen 1323 to rotate, so that the brush strip can erase the impurities on the side wall of the filter screen 1323. In practice, the timing of the brush bar to erase impurities can be controlled manually or automatically. Optionally, the screen cleaning apparatus 134 further includes a controller coupled to the motor for controlling operation of the motor. The controller may be the electronic control unit 112 in the body 110, or may be a separate controller connected to the electronic control unit 112. When in manual control, a switch can be arranged to send an instruction to the controller, and the controller controls the motor to drive the brush strip and the filter screen 1323 to rotate relatively according to the instruction, so that the brush strip erases impurities on the side wall of the filter screen 1323; when the brush bar is automatically controlled, a preset computer program is run on the controller, and the motor is automatically controlled to drive the brush bar and the filter screen 1323 to rotate relatively according to the computer program, so that the brush bar erases impurities on the side wall of the filter screen 1323. Wherein the control of the motor by the controller includes, but is not limited to, a rotational duration and a rotational frequency of the motor.

In some embodiments, as shown in fig. 10, the filter screen cleaning device 134 includes an impeller 1344 and an impeller 1345, the impeller 1344 is disposed at a position where the water inlet flow channel 1321 communicates with the outer cyclone space 1324 and is fixed by rotating along the axial direction of the filter screen 1323, the impeller 1345 is disposed along the axial direction of the filter screen 1323 and is tightly attached to the sidewall of the filter screen 1323, and the impeller 1345 is fixedly connected with the impeller 1344, when the water flow rotates in the outer cyclone space 1324, the impeller 1344 is driven to rotate, so that the impeller 1344 drives the impeller 1345 to rotate along the sidewall of the filter screen 1323 circumferentially to erase impurities on the sidewall.

Specifically, the impeller 1344 is disposed at a position where the water inlet flow channel 1321 is communicated with the outer cyclone space 1324, which is equivalent to that water enters the outer cyclone space 1324 along a tangential direction of an edge of the impeller 1344, and under the impact and the rotation motion of the water, the impeller 1344 rotates along the rotation motion direction of the water, so as to drive the impeller 1345 to rotate together, so that the impeller 1345 moves along the circumferential direction of the side wall of the filter screen 1323, and impurities attached to the filter screen 1323 can be erased due to the fact that the impeller 1345 is tightly attached to the side wall, thereby preventing the mesh of the filter screen 1323 from being blocked.

Compared to the above-described manner of using the motor as the driving force, the embodiment of the disclosure does not need to provide an additional driving force, but uses the power of the water flow to generate the driving force for driving the impeller 1345 to rotate, so that the cleaning and filtering mechanism of the filter screen 1323 can work synchronously, thereby realizing the self-cleaning effect of the filter screen 1323.

In combination with the above embodiments, the filter screen cleaning device provided in the embodiments of the present disclosure may be disposed close to an outer side wall or/and an inner side wall of the filter screen, and the filter screen cleaning device and the filter screen may reciprocate or rotate axially relative to each other. For example, in one embodiment, the screen cleaning apparatus includes a brush bar that is affixed to a side wall of the screen. For example, in another embodiment, the filter screen cleaning device further includes an impeller, where the impeller is disposed at a position where the water inlet channel is communicated with the outside rotational flow space and is fixed in rotation along the axial direction of the filter screen, and the brush bar is fixedly connected with the impeller or the impeller drives the brush bar to rotate, so as to realize self-driven rotation of the cleaning device, which is very environment-friendly and energy-saving.

In practice, the impeller 1345 is preferably strip-shaped, and at least one brush bar may be disposed in parallel, inclined or surrounding manner along the axial direction of the filter screen 1323. For example, when the impeller 1345 is one, the impeller 1345 is closely attached to the outer sidewall of the filter 1323 in parallel or inclined axial direction with respect to the filter 1323; when the number of the impellers 1345 is two, the two impellers 1345 are arranged at intervals in the circumferential direction of the filter screen 1323, and the impellers 1345 are closely attached to the outer side wall in parallel or obliquely relative to the axial direction of the filter screen 1323; when the number of the impellers 1345 is two or more, the impellers 1345 are circumferentially spaced around the filter 1323, and each impeller 1345 is closely attached to the outer side wall in parallel or obliquely with respect to the axial direction of the filter 1323.

It should be noted that with the addition of the screen cleaning device 134, the mesh size of the screen may be designed to be relatively small in order to isolate more contaminants from the outside rotational space. Because the mesh aperture is relatively smaller, more impurities are easy to adhere to the meshes, the impurities adhering to the filter screen can be erased by the filter screen cleaning device 134, so that the effect of preventing the impurities from blocking the meshes on the filter screen to influence the filtering effect can be achieved, and the effect of filtering impurities with more smaller dimension can be achieved, so that the impurities in the water flow can be thoroughly filtered by the filtering mechanism.

In some embodiments, the bottoms of the outer and inner swirl spaces 1324 and 1325 are provided with openable and closable valves, respectively, which when opened, leak out impurities separated by the rotational movement of the water flow in the outer and inner swirl spaces 1324 and 1325.

Specifically, the outer swirling space 1324 and the inner swirling space 1325 may share one valve, or may be separately provided, which is not limited by the embodiment of the present disclosure. Referring to fig. 4, the outer cyclone space 1324 may include a bottom cover 1326 and a top cover 1327, where the bottom cover 1326 and the top cover 1327 are detachably and sealingly connected to the upper end and the lower end of the outer cyclone space 1324, and both the bottom cover 1326 and the top cover 1327 may be used as valves, in practical use, due to gravity, impurities separated in the outer cyclone space 1324 and the inner cyclone space 1325 will fall to the bottom, and after the impurities reach a certain amount, the impurities need to be removed from the outer cyclone space 1324 and the inner cyclone space 1325, and the impurities separated in the outer cyclone space 1324 and the inner cyclone space 1325 should be cleaned periodically by the valves.

In practice, the filter mechanism may be configured to be removable from the cleaning device 100, or may be configured to be fixed. When the filter mechanism is detachably fixed on the cleaning apparatus 100, the first stage filter mechanism 131, the second stage filter mechanism 132 and the fluid pumping device 133 may be detachably and fixedly connected to the body of the cleaning apparatus, or the first stage filter mechanism 131, the second stage filter mechanism 132 and the fluid pumping device 133 may be integrally and detachably fixedly connected to the body of the cleaning apparatus, or the first stage filter mechanism 131 may be independently and detachably fixedly connected to the body, and the second stage filter mechanism 132 and the fluid pumping device 133 may be integrally and detachably fixedly connected to the body of the cleaning apparatus; alternatively, the first filter and the second filter 132 are integrally and removably fixedly connected to the body of the cleaning apparatus, and the fluid pumping device 133 is separately and removably fixedly connected to the body, which is not limited in the embodiment of the present disclosure. Then, when the impurity is required to be cleaned, the filter mechanism can be detached, and the filter mechanism is installed back after the impurity is removed, so that the impurity can be conveniently and flexibly poured. When the filtering mechanism is fixed on the cleaning device 100, only the valves arranged in the outer cyclone space 1324 and the inner cyclone space 1325 can be opened when the impurities need to be cleaned, the filtering mechanism is used for cleaning the impurities together with the machine body, and the valves are closed after the impurities are cleaned.

In addition, in conjunction with fig. 2, 4, 5 and 10, the embodiment of the disclosure further provides a filtering mechanism, applied to the cleaning device, where the filtering mechanism at least includes: the first-stage filtering mechanism 131, the second-stage filtering mechanism 132 and the fluid pumping device 133 are sequentially connected in cascade, the water inlet is communicated with the first-stage filtering mechanism 131, the fluid pumping device 133 generates a suction force to pump water flow from the vicinity of the water inlet to the first-stage filtering mechanism 131 and the second-stage filtering mechanism 132 for step-by-step filtering, the size dimension of impurities separated from the water flow by the first-stage filtering mechanism 131 is larger than the size dimension of impurities separated from the water flow by the second-stage filtering mechanism 132, and at least one of the first-stage filtering mechanism 131 and the second-stage filtering mechanism 132 is a rotary separation filtering mechanism.

According to the technical scheme provided by the embodiment of the disclosure, the first-stage filtering mechanism 131 and the second-stage filtering mechanism 132 are used for filtering the water flow pumped from the water inlet by the fluid pumping device 133 step by step, and filtering and separating impurities in the water flow according to the order of the size dimension from large to small, so that the impurities in the water flow can be filtered more thoroughly by the filtering mechanism, and the filtering effect of the cleaning equipment is effectively improved.

Alternatively, the first stage filter mechanism 131 is an inertial separation filter mechanism and the second stage filter mechanism 132 is a rotary separation filter mechanism.

Specifically, the inertial separation filter mechanism includes at least two straight fluid channels 1311 and an impurity receiving cavity 1312, the at least two straight fluid channels 1311 are vertically disposed above the impurity receiving cavity 1312 along the length direction, the at least two straight fluid channels 1311 are in end-to-end curved communication side by side, and two ends of the straight fluid channels 1311 after communication are respectively communicated with the water inlet and the second stage filter mechanism 132, the straight fluid channels 1311 are provided with openings at curved communication positions near one side of the impurity receiving cavity 1312, and inner walls of the straight fluid channels 1311 around the openings are tapered walls.

Specifically, the rotary separation filter mechanism includes at least: outside whirl space, filter screen and inboard whirl space, outside whirl space sets up in the outside of filter screen to with first order filtering mechanism intercommunication, the rivers that follow first order filtering mechanism output get into outside whirl space and produce once rotary motion and can't pass through the separation of filter screen in with the rivers, inboard whirl space sets up in the inboard of filter screen, and with fluid pumping device 133 intercommunication, the rivers that get into through the filter screen produce secondary rotary motion and come out impurity in the rivers.

Above-mentioned inertial separation filter mechanism and rotatory separation filter mechanism's combination can separate out the impurity of the great size dimension in the rivers earlier, then carries out the layering to the impurity of the less size dimension and filters, has realized that filter mechanism carries out the effect of separation step by step to the impurity in the rivers, can more thoroughly separate the impurity in the filtration rivers, has promoted filter mechanism's filter effect.

Optionally, the rotary separation filter mechanism further comprises: the filter screen cleaning device comprises an impeller and a brush strip, wherein the impeller is arranged at the position where a water flow inlet runner is communicated with an outside rotational flow space and is fixed in a rotating manner along the axial direction of the filter screen, the brush strip is arranged along the axial direction of the filter screen and is clung to the side wall of the filter screen, the brush strip is fixedly connected with the impeller or the impeller drives the brush strip to rotate, and when water flows in the outside rotational flow space, the impeller is driven to rotate, so that the impeller drives the brush strip to circumferentially rotate along the side wall of the filter screen to erase impurities on the side wall.

The disclosed embodiments utilize the filter screen cleaning device 134 to erase the impurities attached to the filter screen, which not only prevents the impurities from blocking the meshes on the filter screen to affect the filtering effect, but also filters the impurities with more smaller dimension, so that the filtering mechanism filters the impurities in the water flow more thoroughly.

The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the present disclosure, but is to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the present disclosure.

Claims

1. A cleaning apparatus, comprising: organism, filtering mechanism and running gear, be provided with at least one water inlet on the organism, filtering mechanism includes at least: the device comprises a first-stage filtering mechanism, a second-stage filtering mechanism and a fluid pumping device, wherein the first-stage filtering mechanism, the second-stage filtering mechanism and the fluid pumping device are sequentially connected, the water inlet is communicated with the first-stage filtering mechanism, the fluid pumping device generates a suction force to pump water flow from the vicinity of the water inlet to the first-stage filtering mechanism and the second-stage filtering mechanism for step-by-step filtering, the size dimension of separating impurities from the water flow by the first-stage filtering mechanism is larger than the size dimension of separating impurities from the water flow by the second-stage filtering mechanism, the first-stage filtering mechanism is an inertial separation filtering mechanism, and the second-stage filtering mechanism is a rotary separation filtering mechanism.

2. The cleaning apparatus according to claim 1, wherein the inertial separation filter mechanism includes at least two straight fluid passages and an impurity receiving chamber, the at least two straight fluid passages are vertically disposed above the impurity receiving chamber in a length direction, the at least two straight fluid passages are in side-by-side curved communication end to end, and both ends of the straight fluid passages after communication are respectively communicated with the water inlet and the second stage filter mechanism, the straight fluid passages are provided with openings at curved communication positions near one side of the impurity receiving chamber, and inner walls of the straight fluid passages around the openings are tapered walls.

3. A cleaning device according to claim 2, wherein the angle of curvature of two adjacent straight fluid channels in the curved communication position is greater than 90 °.

4. A cleaning device according to claim 2, wherein the taper of the tapered wall is 10 ° -20 °.

5. The cleaning apparatus defined in any one of claims 1-4, wherein the rotary separation filter mechanism comprises at least: outside whirl space, filter screen and inboard whirl space, outside whirl space sets up in the outside of filter screen to with first order filtering mechanism intercommunication, follow the rivers of first order filtering mechanism output get into outside whirl space produces once rotary motion and can't separate out through the filter screen in with the rivers, inboard whirl space set up in the inboard of filter screen, and with fluid pumping device intercommunication, rivers entering through the filter screen the impurity in the rivers are separated out to the secondary rotary motion production in inboard whirl space.

6. The cleaning apparatus of claim 5, wherein the rotary separation filter mechanism further comprises: the filter screen cleaning device comprises a vibrating device, an eccentric part and a connecting piece, wherein the vibrating device is fixedly arranged at one axial end of a filter screen, the eccentric part is connected to an output shaft of the vibrating device and rotates along with the vibrating device, and the connecting piece is respectively connected with the eccentric part and the filter screen.

7. The cleaning apparatus of claim 5, wherein the rotary separation filter mechanism further comprises: the filter screen cleaning device is closely attached to the outer side wall or/and the inner side wall of the filter screen, and the filter screen cleaning device and the filter screen can axially reciprocate or rotate relatively.

8. The cleaning apparatus of claim 7, wherein the screen cleaning device comprises a brush bar that is affixed to a sidewall of the screen.

9. The cleaning apparatus of claim 8, wherein the filter screen cleaning device further comprises an impeller, the impeller is disposed at a position where the water inlet flow channel is communicated with the outside rotational flow space, and is fixed in rotation along the axial direction of the filter screen, and the brush bar is fixedly connected with the impeller or the impeller drives the brush bar to rotate.

10. A cleaning device according to claim 9, wherein the number of brush bars is at least one, each brush bar being arranged in a parallel, oblique or circumferential manner relative to the axial direction on the side wall of the filter screen.

11. A filter mechanism for use in a cleaning device, the filter mechanism comprising at least: the device comprises a first-stage filtering mechanism, a second-stage filtering mechanism and a fluid pumping device, wherein the first-stage filtering mechanism, the second-stage filtering mechanism and the fluid pumping device are sequentially connected, the water inlet is communicated with the first-stage filtering mechanism, the fluid pumping device generates a suction force to pump water flow from the vicinity of the water inlet to the first-stage filtering mechanism and the second-stage filtering mechanism for step-by-step filtering, the size dimension of separating impurities from the water flow by the first-stage filtering mechanism is larger than the size dimension of separating impurities from the water flow by the second-stage filtering mechanism, the first-stage filtering mechanism is an inertial separation filtering mechanism, and the second-stage filtering mechanism is a rotary separation filtering mechanism.

12. The filter mechanism of claim 11, wherein the filter mechanism comprises a filter housing;

the inertial separation filtering mechanism comprises at least two straight fluid channels and an impurity accommodating cavity, wherein the at least two straight fluid channels are vertically arranged above the impurity accommodating cavity along the length direction, the at least two straight fluid channels are in end-to-end bending communication side by side, two ends of the communicated straight fluid channels are respectively communicated with the water inlet and the second-stage filtering mechanism, an opening is arranged at a bending communication position close to one side of the impurity accommodating cavity of the straight fluid channels, and the inner wall of the straight fluid channels around the opening is a conical wall;

the rotary separation filter mechanism comprises at least: outside whirl space, filter screen and inboard whirl space, outside whirl space sets up in the outside of filter screen to with first order filtering mechanism intercommunication, follow the rivers of first order filtering mechanism output get into outside whirl space produces once rotary motion and can't separate out through the filter screen in with the rivers, inboard whirl space set up in the inboard of filter screen, and with fluid pumping device intercommunication, rivers entering through the filter screen the impurity in the rivers are separated out to the secondary rotary motion production in inboard whirl space.

13. The filter mechanism of claim 12, wherein the rotary separation filter mechanism further comprises: the filter screen cleaning device comprises an impeller and brush strips, wherein the impeller is arranged at the position where a water flow inlet runner is communicated with an outside rotational flow space and is fixed in a rotating manner along the axial direction of the filter screen, the brush strips are arranged along the axial direction of the filter screen and are clung to the side wall of the filter screen, the brush strips are fixedly connected with the impeller or the impeller drives the brush strips to rotate, and when water flows in the outside rotational flow space rotate, the impeller is driven to rotate, so that the impeller drives the brush strips to circumferentially rotate along the side wall of the filter screen to erase impurities on the side wall.