CN116649833A

CN116649833A - Purifying device

Info

Publication number: CN116649833A
Application number: CN202210143723.1A
Authority: CN
Inventors: 马天航; 桑晓庆
Original assignee: Anker Innovations Co Ltd
Current assignee: Anker Innovations Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2023-08-29

Abstract

The application provides a purifying device, which comprises a shell, a filtering component and an impeller, wherein the shell is provided with a liquid storage cavity, a liquid outlet and a liquid return port; the filtering component is arranged outside the shell, connected with the shell and communicated with the liquid outlet and the liquid return port; the impeller is rotatably arranged in the liquid storage cavity and is used for driving liquid in the liquid storage cavity to circulate between the liquid storage cavity and the filtering component. According to the purification device provided by the embodiment of the application, when the suspension is contained in the liquid storage cavity, the impeller rotates to enable the suspension to rotate in the liquid storage cavity under the action of centrifugal force, so that acting force among particles in the suspension is reduced, the filtering component is communicated with the liquid storage cavity through the liquid outlet and the liquid return port, so that the suspension is circulated between the liquid storage cavity and the filtering component, acting force among the particles in the suspension is further reduced, and then solid particles in the suspension are deposited under the combined action of gravity and centrifugal force.

Description

Purifying device

Technical Field

The application relates to the technical field of cleaning equipment, in particular to a purifying device.

Background

With the continuous development of technology, cleaning robots are widely used in people's daily lives. For example, the cleaning robot may collect dirt on the floor to clean the floor, the cleaning robot conveys the collected dirt to the sewage tank, the dirt is stored in the sewage tank in a form of a suspension, and the visibility and transparency of the suspension in the sewage tank are low, so that solid particles in the suspension are difficult to deposit.

Disclosure of Invention

In order to at least partially solve the above problems, the present application provides a purifying device, including a housing, a filter assembly and an impeller, wherein the housing has a liquid storage cavity, a liquid outlet and a liquid return port, and the liquid storage cavity is communicated with the liquid outlet and the liquid return port; the filtering component comprises a flow guiding piece and a filtering piece, wherein the flow guiding piece is arranged outside the shell and is connected with the shell, the flow guiding piece is provided with a flow guiding channel, the flow guiding channel is communicated with the liquid outlet and the liquid return port, and the filtering piece is arranged inside the flow guiding channel, is arranged outside the shell, is connected with the shell and is communicated with the liquid outlet and the liquid return port; the impeller assembly is rotatably arranged in the liquid storage cavity and is used for driving liquid in the liquid storage cavity to sequentially pass through the liquid outlet, the flow guide channel and the liquid return port, so that the liquid in the liquid storage cavity can circulate between the liquid storage cavity and the flow guide channel of the filtering assembly.

According to the purification device provided by the embodiment of the application, the liquid storage cavity is formed in the shell, the rotatable impeller assembly is arranged in the liquid storage cavity, when the suspension is contained in the liquid storage cavity, the impeller assembly rotates to enable the suspension to rotate in the liquid storage cavity under the action of centrifugal force, so that acting force among particles in the suspension is reduced, the filtering assembly is arranged to be communicated with the liquid storage cavity through the liquid outlet and the liquid return port, a circulation process of the suspension is realized between the liquid storage cavity and the filtering assembly, acting force among the particles in the suspension is further reduced, and further solid particles in the suspension are accelerated to deposit under the combined action of gravity and centrifugal force.

Further, the impeller assembly comprises a central rotating shaft and a plurality of blades, the blades are connected with the central rotating shaft, each blade is provided with a free end far away from the central rotating shaft, the distance between the free end and the inner wall of the shell in the length extending direction of the blade is a first distance, an accelerating space is formed between the free ends and the inner wall of the shell, the same blade sequentially passes through the accelerating space, the liquid outlet and the liquid return port along the rotating direction of the impeller assembly, and in the accelerating space, the first distances corresponding to different free ends are gradually increased along the rotating direction of the impeller assembly.

Based on the above embodiment, when the first distances corresponding to the different free ends are gradually increased along the rotation direction of the impeller assembly, an acceleration space is formed between the plurality of different free ends and the inner wall of the housing, and in the acceleration space, the kinetic energy of the suspension is continuously increased along the rotation direction of the impeller assembly. Because the same blade passes through the accelerating space, the liquid outlet and the liquid return port in sequence, the accelerating space ensures that the suspension liquid can have larger kinetic energy when entering the liquid outlet, so that the suspension liquid can smoothly flow into the liquid storage cavity through the liquid return port, the circulating process of the suspension liquid between the liquid storage cavity and the filtering component is more convenient and rapid, and the deposition of solid particles in the suspension liquid is accelerated.

Further, the center rotating shaft is eccentrically arranged compared with the shell, so that the first distances corresponding to different free ends are gradually increased along the rotating direction of the impeller assembly in the accelerating space.

Based on the above embodiment, in order to make the impeller assembly eccentrically disposed compared with the housing, each blade included in the impeller assembly has the same shape, and when the free ends are equally spaced from the central rotating shaft and uniformly distributed along the circumferential direction of the central rotating shaft, the impeller assembly is symmetrical about the central rotating shaft, and the area of the sector area swept by each blade in the same time is the same.

Further, when the impeller assembly rotates, the length of the blade passing through the liquid outlet is larger than the length of the next blade to be passed through the liquid outlet, so that the first distances corresponding to different free ends are gradually increased along the rotation direction of the impeller assembly in the acceleration space.

Based on the above embodiment, in order that when the impeller assembly rotates, the length of the blade currently passing through the liquid outlet is greater than the length of the blade next to pass through the liquid outlet, so that each blade included in the impeller assembly has the same shape, and when the free ends are different from the central rotating shaft and are uniformly distributed along the circumferential direction of the central rotating shaft, the area of the sector area swept by each blade in the same time is different, and the impeller assembly is an eccentric impeller assembly, that is, when the impeller assembly rotates around the central rotating shaft, the torque of each blade relative to the central rotating shaft is different.

Further, in the acceleration space, an intersecting position is formed between the inner wall of the housing and the wall of the liquid outlet, and a first distance corresponding to a free end pointing to the intersecting position along the length extending direction of the blade is greater than a first distance corresponding to the other free ends.

Based on the above embodiment, the liquid outlet is located at the end of the acceleration space, so that the suspension has larger kinetic energy at the liquid outlet, and thus the circulation process of the suspension between the liquid storage cavity and the filtering component is more facilitated.

Further, the shell comprises a bottom plate and a side plate connected with the bottom plate, the side plate and the bottom plate are surrounded to form a liquid storage cavity, the liquid outlet is formed in the bottom plate or the side plate, and the liquid return port is formed in the bottom plate or the side plate.

Based on the above embodiment, there are four setting modes of the liquid outlet and the liquid return port: 1. the liquid outlet and the liquid return port are both arranged on the bottom plate; 2. the liquid outlet and the liquid return port are both arranged on the side plate; 3. the liquid outlet is arranged on the side plate, and the liquid return port is arranged on the bottom plate; 4. the liquid outlet is arranged on the bottom plate, and the liquid return port is arranged on the side plate. Based on the above four cases, it can be understood that the arrangement positions of the liquid outlet and the liquid return port will have an influence on the circulation process of the suspension between the liquid storage cavity and the filter assembly.

Further, the liquid return port is formed in the bottom plate, the liquid outlet is formed in the side plate, and the projection of the impeller assembly on the bottom plate along the axial direction of the impeller assembly at least covers 1/3 of the opening area of the liquid return port.

Based on the above embodiment, the liquid return port is formed in the bottom plate, the liquid outlet is formed in the side plate, and at this time, the height of the liquid outlet 22 from the bottom plate is greater than the height of the liquid return port from the bottom plate, and in the flowing process of the suspension liquid in the filtering component, gravitational potential energy of the suspension liquid is converted into kinetic energy, and gravity does positive work in the flowing process, so that the circulating process of the suspension liquid between the liquid storage cavity and the filtering component is easier to realize. The projection of the impeller assembly on the bottom plate along the axial direction of the impeller assembly at least covers 1/3 of the opening area of the liquid return port, so that the flow speed of the suspension in the liquid storage cavity at the liquid return port can be controlled more accurately, and the circulation speed of the suspension between the liquid storage cavity and the filtering assembly can be controlled by controlling the rotation speed of the impeller assembly.

Further, the liquid outlet and the liquid return opening are both formed in the bottom plate, and the projection of the impeller assembly on the bottom plate along the axial direction of the impeller assembly is arranged in a staggered mode with the liquid outlet and at least covers 1/3 of the opening area of the liquid return opening.

Based on the above embodiment, when the impeller assembly covers the liquid return port, at the liquid return port, the flow velocity of the suspension in the liquid storage cavity is greater than the flow velocity of the suspension in the filter assembly, so that the pressure of the suspension at the liquid return port is smaller than the pressure of the suspension at the liquid outlet, and the suspension flows into the filter assembly through the liquid outlet and then flows into the liquid storage cavity through the liquid return port under the action of the pressure difference.

Further, the side plates comprise arc-shaped plates and straight plates, and the arc-shaped plates are connected with the bottom plate; the straight plate is connected with the arc-shaped plate and the bottom plate, and forms a liquid storage cavity together with the arc-shaped plate and the bottom plate, and the straight plate is provided with a liquid outlet.

Based on the above embodiment, when a part of the suspension changes the original motion track due to the limitation of the straight plate, the suspension loses a part of kinetic energy due to the impact of the suspension on the straight plate, that is, at the moment that the part of the suspension with the changed original motion track touches the straight plate, the kinetic energy of the suspension is reduced, the reduced kinetic energy is converted into potential energy, the potential energy converted by the suspension acts on the straight plate in the form of pressure energy, and since the liquid outlet is formed in the straight plate, when the suspension acts on the straight plate in the form of pressure energy, the pressure energy enables the suspension to enter the liquid outlet more easily.

Further, the distance between the rotating axis corresponding to the impeller assembly and the liquid outlet is a third distance, and the distance between the circle center corresponding to the arc-shaped plate and the liquid outlet is a third distance, wherein the second distance is larger than the third distance, so that the impeller assembly is eccentrically arranged compared with the shell.

Based on the above embodiment, because the second distance is greater than the third distance, that is, the impeller assembly is eccentrically arranged compared with the shell, the suspension continuously accelerates and accumulates kinetic energy in the rotation process under the action of centrifugal force, and when the suspension touches the straight plate, the suspension can convert the kinetic energy into more pressure potential energy, so that the suspension can enter the filter assembly through the liquid outlet more favorably, and the circulation process can be better realized in the liquid storage cavity and the filter assembly.

Further, the straight plate is provided with a central axis which is perpendicular to the straight plate, and the central axis is perpendicularly intersected with the corresponding rotation axis of the impeller assembly.

Based on the above embodiment, the central rotating shaft of the impeller assembly is perpendicular to the bottom plate and is disposed on the central axis of the straight plate, and the central axis divides the liquid storage cavity into two accommodation spaces with the same volume, so that the suspension has the same pressure intensity at symmetrical positions on two sides of the central axis.

Further, the liquid outlet and the liquid return port are positioned on two sides of the central axis, and the orthographic projection of the liquid return port on the straight plate along the central axis is positioned in the straight plate.

Based on the above embodiment, when the suspension contacts with the straight plate, part of kinetic energy of the suspension is converted into pressure potential energy, under the condition that inertia and the straight plate are restrained, the suspension also has a component speed which is the same as the rotation direction of the impeller assembly and is parallel to the straight plate, and when the liquid outlet and the liquid return port are positioned on two sides of the central axis, the suspension can flow to the liquid return port through the liquid outlet more easily under the action of the component speed. The orthographic projection of the liquid return port on the straight plate along the central axis is positioned in the straight plate, so that the flow speed of the suspension at the liquid return port can be controlled by controlling the rotating speed of the impeller assembly, and the circulating speed of the suspension can be controlled by controlling the rotating speed of the impeller assembly.

Further, the flow guiding piece comprises a liquid outlet pipe, a liquid return pipe and a containing pipe, wherein the liquid outlet pipe is connected with the shell and communicated with the liquid outlet; the liquid return pipe is connected with the shell and communicated with the liquid return port; the holding pipe is connected with the drain pipe and the liquid return pipe, and is communicated with the drain pipe and the liquid return pipe, and a filter element is arranged in the holding pipe. Wherein, the drain pipe is connected with the holding pipe in a detachable way, and/or the liquid return pipe is connected with the holding pipe in a detachable way.

Based on the above embodiment, the liquid outlet pipe, the liquid return pipe and the accommodating pipe together form a diversion channel, so that the suspension realizes a circulation process. At least one of the accommodating tube, the liquid outlet tube and the liquid return tube is detachably connected, so that the filter element in the accommodating tube can be replaced in time by detaching the accommodating tube, and the filtering adsorption effect of the filter element on the suspension is maintained.

Further, one end of the liquid outlet pipe connected with the shell is higher than one end of the liquid outlet pipe communicated with the accommodating pipe, and/or one end of the accommodating pipe communicated with the liquid outlet pipe is higher than one end of the accommodating pipe communicated with the liquid return pipe.

Based on the above embodiment, the end of the liquid outlet pipe connected with the shell is higher than the end of the liquid outlet pipe connected with the containing pipe, that is, the gravitational potential energy of the suspension at the end of the liquid outlet pipe connected with the shell is greater than the gravitational potential energy of the suspension at the end of the liquid outlet pipe connected with the containing pipe, and gravity always applies positive work in the moving process of the suspension in the liquid outlet pipe, so that the suspension is easy to circulate from the end of the liquid outlet pipe connected with the shell to the end of the liquid outlet pipe connected with the containing pipe; the one end that holding pipe and drain pipe intercommunication is higher than the one end that holding pipe and drain pipe communicate, and the gravitational potential energy that the suspension possessed at the one end that holding pipe and drain pipe communicate is greater than the gravitational potential energy that the suspension possessed at the one end that holding pipe and drain pipe communicate promptly, and the suspension is in the removal in-process of holding intraductal, and gravity does positive work all the time for the suspension easily circulates to the one end that holding pipe and drain pipe communicate by the one end that holding pipe and drain pipe communicate, and then makes the suspension pass through the filter more smoothly.

Further, the purifying device also comprises a sterilizing piece which is arranged in the shell or the liquid storage cavity.

Based on the above embodiment, the sterilization member sterilizes the suspension.

Further, the disinfection piece comprises one or more ultraviolet lamp tubes which are arranged on the shell and used for transmitting ultraviolet rays into the liquid storage cavity.

Based on the embodiment, the ultraviolet rays emitted by the ultraviolet lamp tube can irradiate the suspension, so that the aim of sterilizing the suspension is fulfilled.

According to the purification device, the liquid storage cavity is formed in the shell, the rotatable impeller assembly is arranged in the liquid storage cavity, when the suspension is contained in the liquid storage cavity, the impeller assembly rotates to enable the suspension to rotate in the liquid storage cavity under the action of centrifugal force, so that acting force among particles in the suspension is reduced, the filtering assembly is arranged and communicated with the liquid storage cavity through the liquid outlet and the liquid return port, a circulation process of the suspension is achieved among the liquid storage cavity and the filtering assembly, acting force among the particles in the suspension is further reduced, and then solid particles in the suspension are deposited under the combined action of gravity and centrifugal force.

In a second aspect, an embodiment of the present application provides a cleaning robot, including the cleaning device and the robot body in any of the above embodiments, where the robot body has a placement space, a housing of the cleaning device is disposed in the placement space, and the robot body further includes a suspension collection device, where the suspension collection device includes a liquid injection channel, and the liquid injection channel is communicated with a liquid storage cavity of the cleaning device.

Based on the above embodiment, the robot body is provided with a suspension collection device, so that the suspension such as dirt and water stain on the ground can be collected, the collected suspension such as dirt and water stain flows into the liquid storage cavity through the liquid injection channel, the suspension is deposited in the liquid storage cavity in an accelerating manner, so that the filtering effect on the suspension is better realized, the breeding of bacteria in the suspension is reduced, and the cleaning robot can collect the suspension and perform layering treatment on the suspension.

In a third aspect, an embodiment of the present application provides a cleaning base station, including the cleaning device, the driving member and the base in any of the above embodiments, where the driving member is in transmission connection with an impeller assembly of the cleaning device, and the housing of the cleaning device and the driving member are fixedly disposed on the base.

Based on the embodiment, the moving part is in transmission connection with the impeller assembly to drive the impeller assembly to rotate in the liquid storage cavity, and further drive the suspension in the liquid storage cavity to rotate so as to accelerate the deposition of solid particles in the suspension. The cleaning base station in the embodiment can realize layering treatment of the suspension and reduce bacterial growth in the suspension.

In a fourth aspect, an embodiment of the present application provides a cleaning system including a cleaning base station and a cleaning robot cooperating with the cleaning base station, at least one of the cleaning base station and the cleaning robot including the cleaning apparatus of any one of the embodiments described above.

Based on the above embodiment, when the cleaning robot includes the purifying device, the cleaning robot can complete the separation work of the suspension before returning to the cleaning base station, and the cleaning robot can respectively convey the filter layer and the deposition layer in the suspension to the cleaning base station, so that the cleaning base station can respectively perform the sterilization and disinfection operation on the filter layer and the deposition layer, thereby obtaining a better sterilization effect; or when the cleaning base station comprises the purifying device, after the cleaning robot finishes the cleaning work on the ground, the cleaning robot conveys the collected suspension to the cleaning base station, and the cleaning base station finishes the separation process of the suspension so as to reduce the breeding of bacteria in the suspension.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a purification apparatus according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a purification apparatus according to another embodiment of the present application;

FIG. 3 is a schematic view showing the structure of a purifying apparatus according to still another embodiment of the present application;

FIG. 4 is a schematic view showing the structure of a purifying apparatus according to still another embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a purification apparatus according to another embodiment of the present application;

FIG. 6 is a schematic flow diagram of a liquid in a purification apparatus according to an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of a purification apparatus according to still another embodiment of the present application;

FIG. 8 is a schematic cross-sectional view of a purification apparatus according to another embodiment of the present application;

FIG. 9 is a schematic view showing the structure of a purifying apparatus according to an embodiment of the present application;

Fig. 10 is a schematic structural view of a cleaning robot in an embodiment of the present application;

FIG. 11 is a schematic diagram of a cleaning system according to an embodiment of the application.

Reference numerals: 1. a purifying device; 2. a housing; 21. a liquid storage cavity; 22. a liquid outlet; 23. a liquid return port; 24. a bottom plate; 25. a side plate; 251. an arc-shaped plate; 252. a straight plate; 3. a filter assembly; 31. a flow guide; 311. a liquid outlet pipe; 312. a liquid return pipe; 313. a receiving tube; 32 filter elements; 4. an impeller assembly; 41. a central spindle; 42. a blade; 5. a sterilizing member; 51. an ultraviolet lamp tube; 6. a cleaning robot; 61. a robot body; 611. a suspension collection device; 612. placing space; 613. a liquid injection channel; 7. cleaning the base station; 71. a driving member; 72. a base; 8. a cleaning system; l1, a first distance; l2, a second distance; l3, third distance; l4, a central axis; s, an acceleration space; x, intersection position.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

In the related art, sewage refers to a complex mixture of various forms of inorganic and organic matters, and generally includes floating and/or suspended solid particles of a size, colloidal or gelatinous diffusions, and pure solutions. Macroscopically, sewage is a manifestation of suspension. The suspension has part of larger particles, and the larger particles are subjected to surface tension and are distributed in the suspension in a suspended or floating mode; similarly, the suspension also has a part of smaller particles, and intermolecular forces, steric hindrance forces, electrostatic forces and the like may exist among the smaller particles, and the agglomeration-deagglomeration process is continuously performed among the smaller particles under the interaction of the forces, so that the suspension is kept in a stable state. The steady state of the suspension is represented by a three-dimensional network of particles in the dispersion medium, which network exhibits macroscopic flocculation characteristics. Flocculation characteristics may reduce the visibility and transparency of the suspension, resulting in an increase in the viscosity of the suspension, making the bacteria more prone to aggregation and breeding, and also the sterilizing effect of the sterilizing device on the suspension.

Referring to fig. 1, the present application provides a purifying apparatus 1 for accelerating deposition of solid particles in a suspension. The purification device 1 comprises a shell 2, a filtering component 3 and an impeller component 4, wherein the shell 2 is provided with a liquid storage cavity 21 for containing liquid such as suspension, the impeller component 4 is arranged to rotate in the liquid storage cavity 21, so that the suspension in the liquid storage cavity 21 is subjected to centrifugal force applied by the impeller component 4, the suspension rotates in the liquid storage cavity 21 under the action of the centrifugal force to form a rotary water ring, namely, the circulation of the suspension between the liquid storage cavity 21 and the filtering component 3 can be realized through the driving of the impeller component 4, the rotation and the circulation of the suspension can destroy acting force among particles in the suspension, and solid particles in the suspension can be deposited to the bottom of the liquid storage cavity 21 more quickly under the combined action of the centrifugal force and the gravity. The deposited suspension can be divided into a filter layer and a deposition layer, wherein the filter layer is positioned above the deposition layer, and the deposition layer and the filter layer are manifestations of solid particulate matter deposition in the suspension. The filter layer has higher transparency and visibility than the deposited layer from a macroscopic perspective, and has a more pronounced separation boundary between the filter layer and the deposited layer. It will be appreciated that the purification device of the present application can handle not only suspensions, but also other liquids such as emulsions and the like.

The shell 2 is provided with a liquid storage cavity 21 for containing the suspension, and the liquid storage cavity 21 not only can be used for containing the suspension, but also can prevent the suspension from being influenced by external environment in the deposition process. For example, when the impeller assembly 4 rotates, the casing 2 may be in a closed state to isolate the suspension in the liquid storage cavity 21 from contacting with the external environment, so that not only the suspension is prevented from splashing outside the liquid storage cavity 21 in the rotating process to pollute the external environment, but also the pollutant in the external environment is prevented from exchanging substances with the suspension, thereby reducing the difficulty in purifying the suspension. It can be understood that the materials used for the shell 2 are related to the characteristics of the suspension and the application scene, and the shell 2 can be made of plastic materials, so that the shell 2 has good corrosion resistance and can be manufactured at low cost; the shell 2 can also be made of metal, so that the inner wall of the shell 2 is not easy to adsorb solid particles in the suspension, and the deposition of the solid particles in the suspension is easier. And in order to more intuitively observe the change of the suspension in the liquid storage cavity 21, the casing 2 may be partially or wholly transparent, so as to observe the state of the suspension and perform subsequent processing steps.

The shell 2 is also provided with a liquid outlet 22 and a liquid return outlet 23, and the liquid return outlet 23 and the liquid outlet 22 are communicated with the liquid storage cavity 21, so that circulation or circulation of suspension is realized. It can be understood that when at least one of the liquid return port 23 and the liquid outlet port 22 is in communication with the external environment, the suspension can flow to the external environment through at least one of the liquid return port 23 and the liquid outlet port 22, for example, after the suspension is deposited and layered in the housing 2, the layered deposition layer and the layered filtration layer can be discharged out of the liquid storage cavity 21 through the liquid return port 23 and the liquid outlet port 22 respectively; when the liquid return port 23 is communicated with the liquid outlet 22, the suspension can circulate in the liquid storage cavity 21 through the liquid return port 23 and the liquid outlet 22.

The filter assembly 3 is disposed outside the housing 2, and can filter and isolate solid particles in the suspension. The filtering component 3 is communicated with the liquid outlet 22 and the liquid return opening 23, namely, the filtering component 3 forms a channel communicated with the liquid storage cavity 21 outside the shell 2, when the impeller component 4 rotates in the liquid storage cavity 21, centrifugal force is applied to the turbid liquid in the liquid storage cavity 21, the turbid liquid collides with the inner wall of the shell 2 under the action of the centrifugal force, a rotary water ring is formed between the inner wall of the shell 2 and the impeller component 4, when the rotary water ring passes through the liquid outlet 22, due to the fact that the inner wall of part of the shell 2 is missing at the liquid outlet 22, the turbid liquid flows into the liquid outlet 22 under the action of the centrifugal force into the filtering component 3, and finally flows back into the liquid storage cavity 21 through the liquid return opening 23 after being filtered by the filtering component 3, so that the turbid liquid can circulate under the condition that the filtering component 3 is communicated with the liquid storage cavity 21. The circulation process is favorable for promoting the migration of particles in the suspension and accelerating the sedimentation of solid particles, and meanwhile, the circulation process can promote the exchange of substance movement and energy, namely, the circulation movement of the suspension can also reduce intermolecular acting force among particles and increase the agglomeration difficulty among smaller particles, so that the flocculation characteristic of the suspension is reduced, and the visibility and transparency of the suspension can be increased after the circulation process of the suspension, thereby accelerating the deposition of the particles in the suspension.

Further, the filter assembly 3 should be in sealing connection with the housing 2 to avoid leakage of the suspension, and the filter assembly 3 and the housing 2 may be in sealing connection by screwing, cementing, welding, clamping, etc., which is not limited herein.

With continued reference to fig. 1, the filter assembly 3 includes a flow guiding member 31 and a filter member 32, and the filter member 32 can filter and separate part of larger particles in the suspension, so that the filter assembly 3 can achieve the suspension circulation and also has the filtering effect to accelerate the deposition of the particles in the suspension.

The flow guiding member 31 has a flow guiding channel and is connected with the casing 2, and further, since the flow guiding channel is communicated with the liquid outlet 22 and the liquid return port 23, and there is a large pressure difference between the liquid outlet 22 and the liquid return port 23, in order to avoid leakage of the suspension liquid between the liquid outlet 22 and the liquid return port 23, the flow guiding member 31 should be in a sealed connection with the casing 2, and the sealed connection here includes, but is not limited to, glue joint, screw joint, clamping joint, welding, and the like. Furthermore, in order to adapt to the working environment and meet the requirements of different working environments, the material of the flow guiding member 31 may be selected from metal, plastic-composite metal, etc.

The filter 32 is disposed in the flow guide channel to filter and adsorb larger impurities such as paper, hair, dust, etc. in the suspension, and the filter 32 selectively filters only the components in the suspension. Further, the filter radius of the filter 32 may be defined, so that the particles larger than the filter radius in the suspension are filtered and adsorbed by the filter 32 when passing through the filter 32, thereby achieving the targeted filtration of the suspension. Further, due to the existence of inter-molecular forces, steric hindrance forces, electrostatic forces, etc. among the particles in the suspension, agglomeration of different particles may be caused, and when particles exactly conforming to the filter radius are agglomerated with other particle masses, the diameter of the particles after the agglomeration may be larger than the filter radius of the filter 32, thereby causing particles that may have passed through the filter 32 after the agglomeration and the agglomeration may not pass through the filter 32. When the impeller assembly 4 rotates, the centrifugal force generated by the rotation of the impeller assembly 4 can separate substances with different sedimentation coefficients and buoyancy densities in the suspension, namely, the centrifugal force generated by the rotation of the impeller assembly 4 can separate agglomerated and combined particles, so that the particles just conforming to the filtering radius can smoothly pass through the filtering piece 32, thereby realizing selective filtering of the suspension and further accelerating the deposition of the particles in the suspension.

The impeller assembly 4 is one of important components for accelerating the sedimentation rate of solid particles in the suspension as a driving component of the purification apparatus 1. The impellers can be divided into centrifugal impellers and forward impellers according to the shape, the blades of the centrifugal impellers are of single-plate type, circular arc type, airfoil type and the like, and the forward impellers are generally circular arc type blades. Because of intermolecular forces among the particles of the suspension, different particles are mutually agglomerated, and the agglomerated combination not only has the combination among different solid particles, but also has the combination among solid particles and liquid particles, and finally forms a colloid or semi-colloid state in the solution, namely, the flocculation characteristic is shown on macroscopic observation. Further, since the types of the different particles are different, the sedimentation coefficient and the buoyancy density of the different particles are also different, and the centrifugal force generated by the rotation of the impeller assembly 4 acts on the particulate matters, so that the matters with different sedimentation coefficients and buoyancy densities in the suspension are separated. Further, the particles in the suspension continuously sink in the liquid storage cavity 21 under the action of the gravity field, and a diffusion phenomenon is accompanied with the sedimentation, and the smaller the relative mass of the particles, the more serious the diffusion phenomenon is, and the slower the sedimentation speed is. When centrifugal force generated by rotation of the impeller assembly 4 acts on the particulate matter, the centrifugal force can enable the particulate matter to overcome or reduce the diffusion phenomenon and increase the sedimentation speed of the particulate matter in the liquid storage cavity 21.

In summary, through offer the liquid storage chamber 21 in casing 2 inside, set up rotatable impeller subassembly 4 in liquid storage chamber 21, when liquid such as suspension is held in liquid storage chamber 21, impeller subassembly 4 rotates so that the suspension rotates in liquid storage chamber 21 under the effect of centrifugal force, thereby reduce the effort between the particulate matter in the suspension, and through setting up filter unit 3 through liquid outlet 22 and return liquid mouth 23 intercommunication liquid storage chamber 21, so that the suspension realizes cyclic process between liquid storage chamber 21 and filter unit 3, and in annular in-process, carry out the filtration absorption to the great particulate matter in the suspension through filter unit 3, further reduce the effort between the particulate matter in the suspension, and then make the solid particulate matter in the suspension deposit under the combined action of gravity and centrifugal force.

Referring to fig. 2 to 3, the impeller assembly 4 includes a central rotating shaft 41 and a plurality of blades 42, the plurality of blades 42 are connected to the central rotating shaft 41, each blade 42 has a free end (for example, an end indicated by A, B, C, D in fig. 2) far from the central rotating shaft 41, a distance between the free end and an inner wall of the housing 2 in a length extending direction of the blade 42 is a first distance L1 (for example, L1 in fig. 2), an accelerating space S (for example, S in fig. 2) is formed between the plurality of free ends and the inner wall of the housing 2, and when the impeller assembly 4 rotates, the same blade 42 sequentially passes through the accelerating space S, the liquid outlet 22 and the liquid return port 23 in order to make the suspension easier to enter the liquid outlet 22 for circulation, and in the accelerating space S, the first distances L1 corresponding to the different free ends are gradually increased along the rotating direction of the impeller assembly 4.

Further, the flow and circulation of the suspension within the reservoir 21 follows the bernoulli principle, and the bernoulli equation can be expressed as:

wherein:

and p: pressure in the fluid at point a, which may be any point in the fluid;

v: the flow rate at point a in the fluid;

ρ: a fluid density;

g: acceleration of gravity;

h: the point a in the fluid is at the height.

The bernoulli principle follows the law of conservation of mechanical energy, i.e. the sum of pressure potential energy, kinetic energy and gravitational potential energy is constant. In this embodiment, suspensions having the same liquid level may be approximately regarded as having the same gravitational potential energy, i.e., in the liquid level of the same height, suspensions at different positions have the same gravitational potential energy, i.e., suspensions having the same liquid level may be converted by the different positions to embody kinetic energy and pressure potential energy.

For example, as shown in fig. 2 at the four free ends A, B, C, D, which represent the flow rate of the suspension at this point, respectively, the four points A, B, C, D can be considered to have approximately the same gravitational potential energy since the four points A, B, C, D are at the same liquid level. Further, according to the calculation formula of the pressure: p=f/S, the ratio of the pressure applied to the object to the force-receiving area is the pressure, the pressure applied to the suspension is derived from the centrifugal force generated by the rotation of the impeller assembly 4, the acting direction of the centrifugal force is the length extending direction of the blades 42, and the free end of the blades 42 away from the central rotating shaft 41 points to the shell 2; since the impeller assembly 4 serves as a driving member in the liquid storage chamber 21, the impeller assembly 4 rotates to apply centrifugal force to the suspension, regardless of the rotational speed of the impeller assembly 4 How much, the centrifugal force applied to the suspension by the impeller assembly 4 at the same moment is the same, namely the pressure applied to four A, B, C, D points is the same; the force-receiving area of the suspension can be approximately regarded as: the distance between the four A, B, C, D points and the housing 2 in the longitudinal extension direction of the vane 42. Since the distances between the four points A, B, C, D and the housing 2 gradually increase in the length extending direction of the vane 42, it can be derived that: the pressure of the suspension gradually decreases at four points A, B, C, D. Further, the suspension having the same liquid level is located at a position having a pressure in the length extending direction of the vane 42 which is related to the distance between the housings 2, and the further the distance between the point a in the suspension and the housings 2 in the length extending direction of the vane 42 is, the smaller the pressure of the suspension at the point is. Due to p _D <p _C <p _B <p _A The simple derivation can be achieved by combining the Bernoulli equation described above: v (v) _A <ν _B <ν _C <ν _D The kinetic energy of the suspension at four points A, B, C, D gradually increases, and further, it can be obtained that: the suspension having the same liquid level is located at a position in the length extending direction of the blade 42 at a flow rate related to the distance between the free end of the blade 42 and the housing 2, and the further the distance between the free end of the blade 42 and the inner wall of the housing 2 is, the greater the flow rate of the suspension at the free end is. Therefore, when the first distance L1 corresponding to the different free ends is gradually increased along the rotation direction of the impeller assembly 4, an acceleration space S is formed between the plurality of different free ends and the inner wall of the casing 2, and in the acceleration space S, the kinetic energy of the suspension is continuously increased along the rotation direction of the impeller assembly 4.

Because the same vane 42 sequentially passes through the acceleration space S and the liquid outlet 22, the suspension at the liquid outlet 22 has larger kinetic energy than before acceleration when passing through the liquid outlet 22. When the suspension liquid is located at the liquid outlet 22, the liquid outlet 22 is not provided with the inner wall of the shell 2, so that the suspension liquid enters the liquid outlet 22 due to the kinetic energy of the suspension liquid, and the suspension liquid enters the filter assembly 3 through the liquid outlet 22 and then flows into the liquid storage cavity 21 through the liquid return opening 23 because the same blade 42 sequentially passes through the liquid outlet 22 and the liquid return opening 23, so that circulation is formed between the liquid storage cavity 21 and the filter assembly 3. In summary, the accelerating space S enables the suspension to have larger kinetic energy when entering the liquid outlet 22, so that the suspension can smoothly flow into the liquid storage cavity 21 through the liquid return opening 23, the circulating process of the suspension between the liquid storage cavity 21 and the filtering component 3 is more convenient and quick, and the deposition of solid particles in the suspension is accelerated.

The above-mentioned physical analysis is only carried out for the suspensions having the same height of liquid level, namely, the physical analysis is carried out for the liquid level of a certain height, and the obtained result is also applicable to the liquid levels of other heights after the analogy reasoning and the generalization deduction. Therefore, the present embodiment does not particularly limit the height of the liquid outlet 22 and the liquid return port 23.

As shown in fig. 2, when each of the blades 42 included in the impeller assembly 4 has the same length, the distances between the free ends and the central rotation shaft 41 are the same, and are uniformly distributed along the circumferential direction of the central rotation shaft 41, the impeller assembly 4 is in central symmetry about the central rotation shaft 41, and the area of the sector area swept by each of the blades 42 in the same time is the same, so that the first distances L1 corresponding to the different free ends are gradually increased along the rotation direction of the impeller assembly 4 in the acceleration space S, and thus the impeller assembly 4 is eccentrically disposed with respect to the casing 2. When the structure of the shell 2 is a cylindrical, square, cone, sphere and other central symmetrical structures, at this time, the central rotating shaft 41 of the impeller assembly 4 is eccentrically arranged relative to the symmetrical axis of the liquid storage cavity 21, that is, the rotating shaft of the impeller assembly 4 is not overlapped with the symmetrical axis of the liquid storage cavity 21, when the impeller assembly 4 rotates around the central rotating shaft 41, an eccentric distance exists between the impeller assembly 4 and the symmetrical axis of the liquid storage cavity 21 in the rotating process, and in the rotating direction of the impeller assembly 4, the distance between the free ends of the blades 42 and the inner wall of the shell 2 is gradually increased due to the existence of the eccentric distance in the accelerating space S; when the structure of the liquid storage cavity 21 is a non-axisymmetric structure, the rotation shaft of the impeller assembly 4 is eccentrically disposed with respect to the center of the circle corresponding to the arc plate 252, so that an accelerating space S is formed between a part of the blades 42 of the impeller assembly 4 and the inner wall of the housing 2, and therefore, in the rotating direction of the impeller assembly 4, the first distances L1 corresponding to different free ends gradually increase in the accelerating space S, so that the kinetic energy of the suspension in the accelerating space S is continuously increased, that is, the speed of the suspension in the accelerating space S is continuously increased.

As shown in fig. 3, when the impeller assembly 4 includes each vane 42 having a different length, and the free ends are spaced apart from the central rotation axis 41 by different distances, and are uniformly distributed along the circumferential direction of the central rotation axis 41, the area of the sector swept by each vane 42 at the same time is different, that is, when the impeller assembly 4 rotates around the central rotation axis 41, the torque of each vane 42 relative to the central rotation axis 41 is different, the sum of the torque between the central rotation axis 41 and the respective free ends is not zero, and the impeller assembly 4 has eccentricity during rotation. Further, as the impeller assembly 4 rotates, the length of the vane 42 that is currently passing through the outlet 22 is greater than the length of the vane 42 that is next to pass through the outlet 22. When the structure of the casing 2, such as a cylinder, a square body, a cone, and a sphere, is of an equiaxed symmetrical structure, the central rotation axis 41 of the impeller assembly 4 may coincide with the symmetry axis of the liquid storage cavity 21 (i.e., the impeller assembly 4 may be centrally disposed in the casing 2), so that an acceleration space S is formed between a portion of the blades 42 of the impeller assembly 4 and the inner wall of the casing 2, and in the rotation direction of the impeller assembly 4, the first distances L1 corresponding to different free ends gradually increase in the acceleration space S, so that the kinetic energy of the suspension in the acceleration space S is continuously increased, that is, the speed of the suspension in the acceleration space S is continuously increased.

As shown in fig. 2, in the accelerating space S, an intersection position X is formed between the inner wall of the housing 2 and the mouth wall of the liquid outlet 22, and along the length extending direction of the vane 42, a first distance L1 corresponding to a free end pointing to the intersection position is greater than a first distance L1 corresponding to the other free ends, that is, the liquid outlet 22 is located at the end of the accelerating space S, so that the suspension has a larger kinetic energy at the liquid outlet 22, and further, the circulation process of the suspension between the liquid storage cavity 21 and the filtering assembly 3 is more facilitated.

Referring to fig. 4, the flow area of the liquid outlet 22 is larger than the flow area of the liquid return opening 23. It will be appreciated that the continuity of the fluid indicates: in the same time, the flow rate of the suspension flowing into the liquid outlet 22 is the same as the flow rate of the suspension flowing out of the liquid return outlet 23, and the flow rate formula is: q=s=v, since the flow area of the liquid outlet 22 is larger than the flow area of the liquid return opening 23, the flow speed of the suspension at the liquid return opening 23 is larger than the flow speed of the suspension at the liquid outlet 22, so that the circulation efficiency of the suspension in the filter assembly 3 is further improved, that is, when the flow rate of the suspension flowing into the liquid outlet 22 or out of the liquid return opening 23 becomes larger, the circulation times of the suspension in the filter assembly 3 can be increased in the same period of time, and thus, the deposition of solid particles in the suspension can be accelerated.

With continued reference to fig. 4, the housing 2 includes a bottom plate 24 and a side plate 25, and the bottom plate 24 and the side plate 25 jointly enclose a liquid storage chamber 21. It will be appreciated that the central rotation axis 41 of the impeller assembly 4 may be perpendicular to the bottom plate 24, and further, the central rotation axis 41 of the impeller assembly 4 may be fixedly connected with the bottom plate 24, that is, the driving device of the impeller assembly 4 is disposed in the central rotation axis 41, and the driving device drives the blades 42 to rotate; the central rotating shaft 41 of the impeller assembly 4 may also be connected with the bottom plate 24 in a sealing manner, that is, the central rotating shaft 41 of the impeller assembly 4 penetrates through the bottom plate 24 at this time, that is, the driving device is disposed outside the casing 2, and the driving device is connected with the central rotating shaft 41, so as to drive the blades 42 to rotate.

Further, the liquid outlet 22 may be formed on the bottom plate 24 or the side plate 25, and the liquid return opening 23 may also be formed on the bottom plate 24 or the side plate 25, that is, four types of arrangement modes of the liquid outlet 22 and the liquid return opening 23 exist: 1. the liquid outlet 22 and the liquid return opening 23 are both arranged on the bottom plate 24; 2. the liquid outlet 22 and the liquid return opening 23 are both arranged on the side plate 25; 3. the liquid outlet 22 is arranged on the side plate 25, and the liquid return opening 23 is arranged on the bottom plate 24; 4. the liquid outlet 22 is arranged on the bottom plate 24, and the liquid return opening 23 is arranged on the side plate 25. Based on the above four cases, it will be understood that the arrangement of the liquid outlet 22 and the liquid return 23 will have an influence on the circulation process of the suspension between the liquid storage chamber 21 and the filter assembly 3.

Further, as shown in fig. 4, the liquid return port 23 is opened at the bottom plate 24, the liquid outlet 22 is opened at the side plate 25, and at this time, the height of the liquid outlet 22 from the bottom plate 24 is larger than the height of the liquid return port 23 from the bottom plate 24, that is, the gravitational potential energy of the suspension at the liquid outlet 22 is larger than the gravitational potential energy of the suspension at the liquid return port 23. The suspension enters the filter assembly 3 through the liquid outlet 22 and flows back to the liquid storage cavity 21 through the liquid return opening 23, gravitational potential energy of the suspension is converted into kinetic energy in the flowing process of the suspension in the filter assembly 3, and gravity does positive work in the flowing process, so that the circulating process of the suspension between the liquid storage cavity 21 and the filter assembly 3 is easier to realize.

With continued reference to fig. 4, when the liquid return port 23 is formed in the bottom plate 24, the suspension in the filter assembly 3 flows into the liquid storage cavity 21 through the liquid return port 23, and since the impeller assembly 4 is disposed above the liquid return port 23, the flow rate of the suspension in the liquid storage cavity 21 is greater than the flow rate of the suspension in the filter assembly 3 at the liquid return port 23, and according to bernoulli's principle, the flow rate is greater and the pressure is smaller at the same height, so that the suspension hydraulic pressure in the filter assembly 3 is greater than the suspension pressure in the liquid storage cavity 21 at the liquid return port 23, the suspension forms a pressure difference at the liquid return port 23, and the pressure difference gives the suspension the pressure flowing into the liquid storage cavity 21 from the filter assembly 3, thereby facilitating the circulation process of the suspension between the liquid storage cavity 21 and the filter assembly 3. It will be appreciated that the pressure difference of the suspension at the liquid return port 23 is related to the flow rate of the suspension in the liquid storage cavity 21 at the liquid return port 23, and the rotation of the impeller assembly 4 drives the suspension to rotate in the liquid storage cavity 21, so that the pressure difference of the suspension at the liquid return port 23 is related to the rotation speed of the impeller assembly 4, that is, the faster the rotation speed of the impeller assembly 4, the greater the flow rate of the suspension in the liquid storage cavity 21 at the liquid return port 23, the greater the pressure difference of the suspension at the liquid return port 23, and the suspension is easier to flow into the liquid storage cavity 21 by the rotation assembly. Furthermore, the projection of the impeller assembly 4 on the bottom plate 24 along the axial direction thereof at least covers 1/3 of the opening area of the liquid return opening 23, so that on one hand, the flow rate of the suspension at the liquid return opening 23 can be increased, and the circulation efficiency of the suspension between the liquid storage cavity 21 and the filter assembly 3 can be further improved, and on the other hand, the flow rate of the suspension in the liquid storage cavity 21 at the liquid return opening 23 can be more accurately controlled, so that the circulation speed of the suspension between the liquid storage cavity 21 and the filter assembly 3 can be controlled by controlling the rotation speed of the impeller assembly 4.

As shown in fig. 5, the liquid outlet 22 and the liquid return opening 23 may be both opened at the side plate 25, so that the suspension can better circulate between the liquid storage cavity 21 and the filtering component 3, the liquid outlet 22 may be higher than the liquid return opening 23, that is, the height of the liquid outlet 22 from the bottom plate 24 is greater than the height of the liquid return opening 23 from the bottom plate 24, further, the gravitational potential energy of the suspension at the liquid outlet 22 is greater than the gravitational potential energy of the suspension at the liquid return opening 23, the suspension flows through the liquid outlet 22 in the filtering component 3 to the liquid return opening 23, the gravity performs positive work on the movement of the suspension, so that the suspension can more easily circulate from the liquid outlet 22 to the liquid return opening 23 in the filtering component 3 under the action of the gravitational force, and further, the suspension sequentially passes through the liquid outlet 22 and the liquid return opening 23 in the rotation direction of the impeller component 4, and when the suspension enters the filtering component 3 through the liquid outlet 22, the suspension at the liquid outlet 22 does not have the gravitational potential energy of the suspension flowing along the filtering component 3, and the suspension can more smoothly circulate through the liquid outlet 21 in the rotation direction of the filtering component 3, and the liquid return opening 4 in the rotation direction of the filtering component 4.

Further, the liquid outlet 22 and the liquid return opening 23 may be both formed in the bottom plate 24, and the projection of the impeller assembly 4 on the bottom plate 24 along the axial direction thereof is staggered with the liquid outlet 22, and at least covers 1/3 of the opening area of the liquid return opening 23. It will be appreciated that when the impeller assembly 4 is covered on the liquid return port 23, the flow rate of the suspension in the liquid storage cavity 21 is greater than the flow rate of the suspension in the filter assembly 3 at the liquid return port 23, so that the pressure of the suspension at the liquid return port 23 is smaller than the pressure of the suspension at the liquid outlet port 22, and the suspension flows into the filter assembly 3 through the liquid outlet port 22 and then flows into the liquid storage cavity 21 through the liquid return port 23 under the action of the pressure difference.

Further, a baffle may be disposed at the liquid outlet 22 downstream of the impeller assembly 4 in the rotation direction, and the impeller assembly 4 passes through the liquid outlet 22 and the baffle in sequence in the rotation direction. The baffle plate is arranged so that when the suspension touches the baffle plate, the kinetic energy of the suspension is converted into pressure potential energy, and then the suspension flows into the liquid outlet 22 more easily.

Further, the liquid outlet 22 is formed in the bottom plate 24, the liquid return port 23 is formed in the side plate 25, and it can be understood that when the impeller assembly 4 reaches a certain rotation speed in the liquid storage cavity 21, the pressure of the suspension at the liquid outlet 22 is greater than the pressure of the suspension at the liquid return port 23, so that the suspension flows into the filter assembly 3 through the liquid outlet 22 under the action of pressure difference, and flows into the liquid storage cavity 21 through the liquid return port 23.

Referring to fig. 6, the side plate 25 includes an arc plate 251 and a straight plate 252, and the straight plate 252 is provided with a liquid outlet 22. The arc plate 251, the straight plate 252 and the bottom plate 24 jointly enclose to form the liquid storage cavity 21. Further, the arc plate 251, the straight plate 252 and the bottom plate 24 are connected in a sealing manner, so as to avoid the suspension in the liquid storage cavity 21 formed by surrounding from penetrating into the external environment. It can be appreciated that the arc plate and the 251 straight plate 252 can also be manufactured by adopting an integral molding process, so that the manufacturing cost of the arc plate and the 251 straight plate 252 is reduced.

The suspension is rotated in the liquid storage cavity 21 under the action of centrifugal force generated by rotation of the impeller assembly 4, when the suspension rotating along the arc plate 251 touches the straight plate 252, the straight plate 252 resists part of the suspension to continue rotating, namely part of the suspension cannot continue rotating along the original rotating direction due to the limitation of the inner space of the liquid storage cavity 21, and the original moving track of the suspension is changed by the straight plate 252 because the radian of the straight plate 252 is smaller than that of the arc plate 251. Further, when a part of the suspension changes the original motion track due to the limitation of the straight plate 252, the suspension loses part of the kinetic energy due to the impact of the suspension on the straight plate 252, i.e. at the moment when the part of the suspension with the changed original motion track touches the straight plate 252, the kinetic energy of the part of the suspension is reduced, the reduced kinetic energy is converted into potential energy, the potential energy converted by the suspension acts on the straight plate 252 in the form of pressure energy, and since the liquid outlet 22 is formed on the straight plate 252, when the suspension acts on the straight plate 252 in the form of pressure energy, the pressure energy enables the suspension to enter the liquid outlet 22 more easily. The filter assembly 3 is communicated with the liquid outlet 22 and the liquid return 23, so that the suspension is easier to circulate between the liquid storage cavity 21 and the filter assembly 3 due to the combined action of the straight plate 252 and the arc plate 251.

It will be appreciated that the arc shape of the arc plate 251 may be any one of major arc, semicircle or minor arc, and the arc shape of the arc plate 251 is necessarily larger than the arc shape of the straight plate 252 because the arc shape of the straight plate 252 is zero, and the arc shape of the arc plate 251 does not affect the straight plate 252 to limit the partial suspension in the liquid storage cavity 21 to change the movement track. Further, the straight plate 252 may be an arc-shaped plate structure, but the arc of the straight plate 252 should be smaller than the arc of the arc plate 251.

As shown in fig. 6, further, the distance between the rotation axis corresponding to the impeller assembly 4 and the liquid outlet 22 is a second distance L2, the distance between the axis corresponding to the arc plate 251 and the liquid outlet 22 is a third distance L3, and in order to make the suspension easier to enter the liquid outlet 22, the second distance L2 is greater than the third distance L3, so that the impeller assembly 4 is eccentrically disposed compared with the housing 2.

E as shown in fig. 7 ₁ 、E ₂ 、E ₃ 、E ₄ Four adjacent areas, each of which is an area formed by surrounding the central rotating shaft 41, two adjacent blades 42 and the inner wall of the shell 2. It will be appreciated that when the impeller assembly 4 rotates within the reservoir 21, it is at E ₁ 、E ₂ 、E ₃ 、E ₄ The suspensions in the four regions all move in the liquid storage cavity 21 along the rotation direction of the impeller assembly 4, namely are in E ₁ 、E ₂ 、E ₃ 、E ₄ The suspensions in the four regions all have kinetic energy. Further, since the second distance L2 is greater than the third distance L3, at E ₁ 、E ₂ 、E ₃ The areas in the three regions gradually increase, i.e. in the direction of rotation of the impeller assembly 4, the blades 42 are at E ₁ 、E ₂ 、E ₃ The distances between the three areas and the inner wall of the housing 2 gradually increase, as deduced from bernoulli's law above: at E ₁ 、E ₂ 、E ₃ In the three regions, the kinetic energy of the suspension gradually increases. Since the curvature of the straight plate 252 is smaller than the curvature of the arcuate plate 251, E is in the direction of rotation of the impeller assembly 4 ₄ The area of the region gradually decreases, i.e. during rotation of the impeller assembly 4In the direction, the impeller assembly 4 is at E ₄ The distance between the inner wall of the shell 2 and the area gradually decreases, and further, the suspension liquid is in E ₄ The kinetic energy in the region gradually decreases, and further, since the bernoulli principle follows the conservation of mechanical energy, it can be derived that: when the suspension enters E ₄ In the region, the straight plate 252 blocks the suspension from rotating along the rotation direction of the impeller assembly 4, so that when the suspension contacts with the straight plate 252, the kinetic energy of the suspension is partially converted into pressure potential energy, so that the suspension is pressed into the liquid outlet 22, and further, because the second distance L2 is greater than the third distance L3, that is, the impeller assembly 4 is eccentrically arranged compared with the shell 2, the suspension continuously accelerates and accumulates the kinetic energy under the action of centrifugal force in the rotation process, and when the suspension contacts with the straight plate 252, the suspension can convert the kinetic energy into more pressure potential energy, so that the suspension can enter the filter assembly 3 through the liquid outlet 22, and the circulation process in the liquid storage cavity 21 and the filter assembly 3 can be better realized.

With continued reference to fig. 7, the straight plate 252 has a central axis L4, the central axis L4 is perpendicular to the straight plate 252, and the central axis L4 perpendicularly intersects with the rotation axis corresponding to the impeller assembly 4, that is, the central rotation axis 41 of the impeller assembly 4 is perpendicular to the bottom plate 24 and is disposed on the central axis L4 of the straight plate 252. It is understood that the straight plate 252 may be regarded as a chord of the arc shape where the arc plate 251 is located, and the central axis L4 of the straight plate 252, that is, the symmetry axis of the arc plate 251, when the central rotating shaft 41 of the impeller assembly 4 is disposed on the central axis L4, the central axis L4 divides the liquid storage cavity 21 into two accommodating spaces with the same volume, so that the suspension has the same pressure at the symmetry positions on two sides of the central axis L4.

Further, in the rotation direction of the impeller assembly 4, the impeller assembly 4 sequentially passes through the liquid outlet 22 and the liquid return opening 23, and the liquid outlet 22 and the liquid return opening 23 are located at two sides of the central axis L4, it can be understood that when the suspension contacts the straight plate 252, part of kinetic energy of the suspension is converted into pressure potential energy, and under the condition that the inertia is restrained by the straight plate 252, the suspension also has a component speed which is the same as the rotation direction of the impeller assembly 4 and parallel to the straight plate 252, and when the liquid outlet 22 and the liquid return opening 23 are located at two sides of the central axis L4, the suspension can flow to the liquid return opening 23 through the liquid outlet 22 more easily under the action of the component speed. Further, the orthographic projection of the liquid return port 23 on the straight plate 252 along the central axis L4 is located in the straight plate 252, so that the rotation speed of the impeller assembly 4 can be controlled to control the flow rate of the suspension at the liquid return port 23, and further, the rotation speed of the impeller assembly 4 can be controlled to control the circulation speed of the suspension.

With continued reference to fig. 8, the flow guiding member 31 includes a liquid outlet pipe 311, a liquid return pipe 312 and a receiving pipe 313, wherein the liquid outlet pipe 311 is communicated with the liquid outlet 22, the liquid return pipe 312 is communicated with the liquid return port 23, and the receiving pipe 313 is communicated with the liquid outlet pipe 311 and the liquid return pipe 312, i.e. the liquid outlet pipe 311, the liquid return pipe 312 and the receiving pipe 313 together form a flow guiding channel, so that the suspension realizes a circulation process. The liquid outlet pipe 311 and the liquid return pipe 312 should be in sealing connection with the housing 2 and the accommodating pipe 313 to avoid leakage of the suspension during circulation; the accommodating tube 313 is detachably connected with at least one of the liquid outlet tube 311 and the liquid return tube 312, so that the filter element 32 in the accommodating tube 313 can be replaced in time by detaching the accommodating tube 313, and the filtering and adsorbing effects of the filter element 32 on the suspension are maintained.

Further, in order to make the suspension have a better circulation effect in the diversion channel, the end of the liquid outlet pipe 311 connected with the shell 2 is higher than the end of the liquid outlet pipe 311 connected with the accommodating pipe 313, that is, the gravitational potential energy of the suspension at the end of the liquid outlet pipe 311 connected with the shell 2 is greater than the gravitational potential energy of the suspension at the end of the liquid outlet pipe 311 connected with the accommodating pipe 313, further, after the suspension enters the liquid outlet pipe 311 through the liquid outlet 22, the gravitational potential energy of the suspension is continuously reduced along with the movement of the suspension in the liquid outlet pipe 311, and the gravity always performs positive work in the movement process of the suspension in the liquid outlet pipe 311, so that the suspension is easy to circulate from the end of the liquid outlet pipe 311 connected with the shell 2 to the end of the liquid outlet pipe 311 connected with the accommodating pipe 313.

Similarly, in order to make the suspension have a better circulation effect in the accommodating tube 313, the end of the accommodating tube 313, which is communicated with the liquid outlet tube 311, is higher than the end of the accommodating tube 313, which is communicated with the liquid return tube 312, that is, the gravitational potential energy of the suspension at the end of the accommodating tube 313, which is communicated with the liquid outlet tube 311, is greater than the gravitational potential energy of the suspension at the end of the accommodating tube 313, which is communicated with the liquid return tube 312, and further, after the suspension enters the accommodating tube 313, the gravitational potential energy of the suspension is continuously reduced along with the movement of the suspension in the accommodating tube 313, and the gravitational force always acts positively in the movement process of the suspension in the accommodating tube 313, so that the suspension is easy to circulate from the end of the accommodating tube 313, which is communicated with the liquid outlet tube 311, to the end of the accommodating tube 313, which is communicated with the liquid return tube 312, and further, the suspension can more smoothly pass through the filter 32, thereby avoiding the blocking of the suspension at the filter 32 when the filter 32 absorbs too much larger particles.

Further, the number of the liquid outlet pipes 311 and the liquid return pipes 312 may be one or more, and one liquid outlet pipe 311 may be connected to a plurality of liquid return pipes 312, one liquid return pipe 312 may be connected to a plurality of liquid outlet pipes 311, and a plurality of liquid outlet pipes 311 may be connected to a plurality of liquid return pipes 312. Further, when the casing 2 is provided with a plurality of liquid outlet pipes 311 or a plurality of liquid return pipes 312, the liquid outlet pipes 311 and the liquid return pipes 312 may be arranged in various ways. The plurality of liquid outlet pipes 311 may be disposed vertically along the height direction of the casing 2, may be disposed obliquely along the height direction of the casing 2, and may be disposed at intervals in the acceleration space S along the rotation direction of the impeller assembly 4.

As shown in fig. 9, the purifying device 1 further includes a sterilizing member 5, and the sterilizing member 5 may include one or more ultraviolet lamp tubes 51, and the ultraviolet lamp tubes 51 may be disposed in the liquid storage chamber 21 or may be disposed on the outer wall of the housing 2. When the ultraviolet lamp tube 51 is arranged in the liquid storage cavity 21, a protective cover is arranged outside the ultraviolet lamp tube 51 to prevent the suspension from entering the ultraviolet lamp tube 51 to cause short circuit; when the ultraviolet lamp tube 51 is disposed on the outer wall of the housing 2, part or all of the housing 2 should be transparent to achieve the purpose of sterilizing the suspension, so that the suspension can be irradiated with ultraviolet rays emitted by the ultraviolet lamp tube 51.

In addition, the disinfection piece 5 can be filled with gas or solid particles to realize the disinfection of the suspension, and the application does not restrict the type and the state of the disinfection piece 5. However, it should be noted that, when the suspension is subjected to the purification apparatus 1, solid particles in the suspension are deposited on the bottom of the liquid storage chamber 21, and after the suspension is layered to form a filter layer and a deposition layer, the filter layer and the deposition layer are sterilized by the sterilizing member 5. The sterilization effect obtained by the method has better sterilization effect compared with the sterilization effect obtained by directly using the sterilization piece 5 in the non-layered suspension with the same solid-liquid volume coefficient.

In a second aspect, referring to fig. 10, an embodiment of the present application further provides a cleaning robot 6, including the cleaning device 1 and the robot body 61 in any of the above embodiments. The robot body 61 has a placement space 612, and the housing 2 is disposed in the placement space 612, so that the housing can be protected by the placement space 612. It is to be understood that the cleaning robot 6 may be a robot with a liquid collecting function, such as a mopping robot, and the robot body 61 has a suspension collecting device 611, so as to collect the suspension such as dirt and water stain on the ground, so as to implement cleaning work on the ground. Further, the suspension collection device 611 includes a liquid injection channel 613, the liquid injection channel 613 is communicated with the liquid storage cavity 21, that is, the collected dirty and water stain suspension flows into the liquid storage cavity 21 through the liquid injection channel 613, and the suspension is deposited in the liquid storage cavity 21 in an accelerating manner, so as to better achieve the filtering effect on the suspension, thereby reducing the bacterial growth in the suspension, so that the cleaning robot 6 can collect the suspension and perform the layering treatment on the suspension.

In a third aspect, referring to fig. 11, an embodiment of the present application further provides a cleaning base station 7, including the cleaning apparatus 1, the driving member 71, and the base 72 in any of the above embodiments. It will be appreciated that the driving member 71 is in driving connection with the impeller assembly 4 to drive the impeller assembly 4 to rotate in the liquid storage chamber 21, so as to drive the suspension in the liquid storage chamber 21 to rotate, thereby accelerating the deposition of solid particles in the suspension. The housing and the driving member 71 are disposed on the base 72, and the base 72 can provide a stable setting foundation for the housing and the driving member 71. The cleaning base station 7 in this embodiment can realize the layering treatment of the suspension, and reduce the bacterial growth in the suspension.

In a fourth aspect, referring to fig. 11, an embodiment of the present application further provides a cleaning system 8, including a cleaning base station 7 and a cleaning robot 6 cooperating with the cleaning base station 7, wherein at least one of the cleaning base station 7 and the cleaning robot 6 includes the cleaning apparatus 1 in any of the above embodiments. For example, when the cleaning robot 6 (as shown in fig. 10) includes the cleaning device 1, the cleaning robot 6 may complete the separation of the suspension before returning to the cleaning base station 7, and the cleaning robot 6 may respectively convey the filter layer and the deposition layer in the suspension to the cleaning base station 7, so that the cleaning base station 7 may respectively perform the sterilization and disinfection operation on the filter layer and the deposition layer, thereby obtaining a better sterilization effect; or, when the cleaning base station 7 includes the cleaning apparatus 1, after the cleaning robot 6 completes the cleaning operation on the floor, the cleaning robot 6 conveys the collected suspension to the cleaning base station 7, and the cleaning base station 7 completes the separation process of the suspension, so as to reduce the breeding of bacteria in the suspension.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present application and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. A purification apparatus, comprising:

the shell is provided with a liquid storage cavity, a liquid outlet and a liquid return port, wherein the liquid storage cavity is communicated with the liquid outlet and the liquid return port;

the filtering assembly comprises a flow guiding piece and a filtering piece, wherein the flow guiding piece is arranged outside the shell and is connected with the shell, the flow guiding piece is provided with a flow guiding channel, the flow guiding channel is communicated with the liquid outlet and the liquid return port, and the filtering piece is arranged in the flow guiding channel;

the impeller assembly is arranged in the liquid storage cavity and is used for driving liquid in the liquid storage cavity to sequentially flow through the liquid outlet, the flow guide channel and the liquid return port and return to the liquid storage cavity, so that the liquid in the liquid storage cavity can circulate between the liquid storage cavity and the flow guide channel.

2. The purification apparatus of claim 1, wherein the impeller assembly comprises:

A central spindle; and

the blades are connected with the central rotating shaft, each blade is provided with a free end far away from the central rotating shaft, the distance between the free end and the inner wall of the shell in the length extending direction of the blade is a first distance, an accelerating space is formed between the free ends and the inner wall of the shell, the same blade sequentially passes through the accelerating space, the liquid outlet and the liquid return port along the rotating direction of the impeller assembly, and the first distances corresponding to different free ends are gradually increased along the rotating direction of the impeller assembly in the accelerating space.

3. The purifying apparatus of claim 2, wherein the impeller assembly is eccentrically disposed with respect to the housing to achieve a gradual increase in the first distance corresponding to the free end in the direction of rotation of the impeller assembly within the acceleration space.

4. The purifying apparatus of claim 2, wherein a length of the vane passing through the liquid outlet is longer than a length of the vane passing through the liquid outlet at the present time when the impeller assembly rotates, so that the first distance corresponding to the free end is gradually increased in the acceleration space along the rotation direction of the impeller assembly.

5. The purifying apparatus of claim 2, wherein in the acceleration space, an inner wall of the housing and a wall of the liquid outlet have an intersecting position, and a first distance corresponding to the free end directed to the intersecting position along a length extending direction of the vane is greater than a first distance corresponding to the remaining free ends.

6. The purification apparatus of claim 1, wherein the housing comprises a bottom plate and a side plate connected to the bottom plate, the side plate and the bottom plate are surrounded to form the liquid storage cavity, the liquid outlet is formed on the bottom plate or the side plate, and the liquid return opening is formed on the bottom plate or the side plate.

7. The purification apparatus of claim 6, wherein said liquid return port is formed in said bottom plate, said liquid outlet is formed in said side plate, and the projection of said impeller assembly onto said bottom plate in the axial direction thereof covers at least 1/3 of the opening area of said liquid return port.

8. The purification apparatus of claim 6, wherein the liquid outlet and the liquid return opening are both formed in the bottom plate, and a projection of the impeller assembly on the bottom plate along an axial direction of the impeller assembly is staggered with the liquid outlet and covers at least 1/3 of an opening area of the liquid return opening.

9. The purification apparatus of claim 6, wherein the side plate comprises:

the arc-shaped plate is connected with the bottom plate;

the straight plate is connected with the arc-shaped plate and the bottom plate, and forms the liquid storage cavity together with the arc-shaped plate and the bottom plate, and the straight plate is provided with the liquid outlet.

10. The purification apparatus of claim 9, wherein a distance between the axis of rotation corresponding to the impeller assembly and the liquid outlet is a second distance, a distance between a center of a circle corresponding to the arcuate plate and the liquid outlet is a third distance, and the second distance is greater than the third distance, such that the impeller assembly is eccentrically disposed with respect to the housing.

11. The purification apparatus of claim 10, wherein the straight plate has a central axis that is perpendicular to the straight plate and that perpendicularly intersects a corresponding axis of rotation of the impeller assembly.

12. The purification apparatus of claim 11, wherein the liquid outlet and the liquid return are positioned on either side of the central axis, and an orthographic projection of the liquid return on the straight plate along the central axis is positioned in the straight plate.

13. The purification apparatus of claim 1, wherein the flow guide comprises:

the liquid outlet pipe is connected with the shell and communicated with the liquid outlet;

the liquid return pipe is connected with the shell and communicated with the liquid return port;

the liquid outlet pipe is connected with the liquid return pipe, the liquid outlet pipe is communicated with the liquid return pipe, and the filter element is arranged in the liquid outlet pipe.

Wherein, the drain pipe with the holding pipe can dismantle the connection, and/or, the return liquid pipe with the holding pipe can dismantle the connection.

14. The purification apparatus of claim 13, wherein an end of the drain pipe connected to the housing is higher than an end of the drain pipe in communication with the receiving pipe, and/or an end of the receiving pipe in communication with the drain pipe is higher than an end of the receiving pipe in communication with the return pipe.

15. The purification apparatus of any one of claims 1-14, further comprising:

the disinfection piece is arranged in the shell or the liquid storage cavity.

16. The purification apparatus of claim 15, wherein the sterilization member comprises:

the ultraviolet lamp tube is arranged in the shell and used for transmitting ultraviolet rays into the liquid storage cavity.

17. A cleaning robot, comprising:

the purification apparatus of any one of claims 1-16;

the robot body has a space of placing, purifier the casing set up in place in the space, the robot body still includes suspension collection device, suspension collection device includes a notes liquid passageway, annotate the liquid passageway with purifier the stock solution chamber intercommunication.

18. A cleaning base station, comprising:

the purification apparatus of any one of claims 1-16;

the driving piece is in transmission connection with the impeller assembly of the purifying device;

the base, purifier the casing and the driving piece are fixed to be set up in the base.

19. A cleaning system comprising a cleaning base station and a cleaning robot cooperating with the cleaning base station, at least one of the cleaning base station and the cleaning robot comprising a cleaning device according to any one of claims 1-16.