Filtering tank and self-cleaning device for filtering column thereof

Abstract

The application discloses a filter box and a filter column self-cleaning device thereof, and relates to the technical field of filtration. The filter column self-cleaning device is applied to the filter box, the filter box is internally provided with a filter column, and the filter column self-cleaning device comprises the following components: a ring-shaped part, which is used for being sleeved with the outside of the filter column and can be rotationally connected with the filter column; a connecting part, which is arranged on the ring-shaped part; a plurality of bristles, one end of each bristle is fixed with the connecting part, and the other end of each bristle is used for being in contact with the outer surface of the filter column; and a driving structure, which is used for receiving the impact of a to-be-filtered liquid input into the filter box and driving the ring-shaped part to rotate by means of the impact force. The application can drive the bristles to rotate by means of the to-be-filtered liquid input into the filter box, so that the surface of the filter column is cleaned. That is to say, the application does not need to consume electric energy, and the working capacity is relatively reliable compared with the electric equipment and the electronic control system which are prone to faults.

Description

Technical Field

[0001] This application relates to the field of filtration technology, specifically to a filter box and its filter column self-cleaning device. Background Technology

[0002] Solid-liquid separation physical filtration methods have been widely used in the field of liquid purification, such as the filtration and purification of water or oil. Figure 1 and Figure 2 As shown, most physical filtration devices currently use cylindrical filter columns 2 for filtration. During long-term use, filtered impurities can clog the filter column, requiring regular cleaning, such as manual cleaning with a brush or a high-pressure water gun. To enable automatic cleaning of the filter column, self-cleaning devices have emerged on the market. For example, patent publication number CN110402883A discloses a water purifier for aquariums; patent publication number CN112892015A discloses a water filtration device. Both use a motor to drive a rotating brush to automatically clean the filter column or filter cartridge. It's important to understand that using an electric device for self-cleaning the filter column consumes a significant amount of electricity over long-term use. Furthermore, the electric device requires an electronic control system; if the electronic circuitry, the electric device, or the electronic control system malfunctions, the entire self-cleaning device will lose its functionality. Summary of the Invention

[0003] The purpose of this application is to provide a filter box and its filter column self-cleaning device to solve the technical problems of high energy consumption and limited working capacity of the filter column self-cleaning device in the prior art.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] In a first aspect, this application proposes a filter column self-cleaning device for use in a filter box, wherein a filter column is provided inside the filter box, comprising: an annular member for fitting onto the outside of the filter column and forming a rotatable connection with the filter column; a connecting member disposed on the annular member; multiple bristles, one end of each bristle being fixed to the connecting member, and the other end of each bristle being used to contact the outer surface of the filter column; and a driving structure for receiving the impact of the liquid to be filtered input into the filter box and driving the annular member to rotate by means of the impact force.

[0006] As a specific solution in this application, the annular component includes a circular ring; the driving structure includes multiple blades disposed on the circular ring, with each blade evenly distributed around the circumference of the circular ring.

[0007] As a specific solution in this application, the annular component includes a first bevel gear, and the axis of the filter column is parallel to the vertical direction; the driving structure includes: a rotating shaft with its axis perpendicular to the vertical direction; the rotating shaft is used to form a rotatable connection with the filter box; an impeller is disposed on the rotating shaft, and the axis of the impeller coincides with the axis of the rotating shaft; and a transmission assembly is used to form a transmission connection between the first bevel gear and the rotating shaft.

[0008] As a specific solution in this application, the transmission component includes a second bevel gear, which is disposed on the rotating shaft and meshes with the first bevel gear.

[0009] As a specific solution in this application, the transmission assembly includes: a second bevel gear disposed on the rotating shaft; a first guide post disposed inside the filter box, wherein the axis of the first guide post is parallel to the vertical direction; and a third bevel gear movably sleeved on the first guide post, wherein the third bevel gear can form a rotatable connection with the first guide post, and the third bevel gear can float on the liquid to be filtered.

[0010] As a specific solution in this application, the connector includes multiple connecting strips, each extending along the axis of the filter column, and the connecting strips are evenly distributed around the circumference of the filter column; or the connector includes a cylindrical tube, the axis of the cylindrical tube coincides with the axis of the filter column, and the side wall of the cylindrical tube is provided with multiple liquid inlet holes.

[0011] Secondly, this application proposes a filter box including a filter column self-cleaning device as described in any one of the first aspects.

[0012] As a specific solution in this application, it also includes a liquid inlet assembly, which is used to input the liquid to be filtered into the interior of the filter box to create an impact on the drive structure.

[0013] As a specific solution in this application, the liquid inlet assembly includes: a main liquid inlet pipe for inputting the liquid to be filtered into the interior of the filter box; a first sub-liquid inlet pipe and at least one second sub-liquid inlet pipe, wherein the first sub-liquid inlet pipe and each of the second sub-liquid inlet pipes are connected to the main liquid inlet pipe; the first sub-liquid inlet pipe is used to impact the drive structure; and a control structure corresponding to each of the second sub-liquid inlet pipes, wherein the control structure is used to open or close the corresponding second sub-liquid inlet pipe based on the liquid level inside the filter box.

[0014] As a specific solution in this application, the control structure includes: an electronic level gauge, which is installed inside the filter box; and a solenoid valve, which is installed in the second inlet pipe and is electrically connected to the electronic level gauge.

[0015] As a specific embodiment of the technical solution in this application, the end of each second liquid inlet pipe faces downwards. The control structure includes: a second guide post disposed in the filter box; the axis of the second guide post is parallel to the vertical direction, and the second guide post extends into the corresponding second liquid inlet pipe; a first buoyancy member movably sleeved on the outside of the second guide post, and the first buoyancy member can float on the liquid to be filtered; the maximum outer diameter of the first buoyancy member is greater than the inner diameter of the second liquid inlet pipe.

[0016] As a specific solution in this application, each second inlet pipe is provided with a first control pipe at its end, and the inner diameter of the first control pipe increases in the vertical direction; the first buoyancy component is adapted to the first control pipe.

[0017] As a specific solution in this application, the control structure includes: a support member disposed in the filter box; a lever hinged to the support member; a second buoyancy member disposed at the first end of the lever, and the second buoyancy member is capable of floating on the liquid to be filtered; and a sealing assembly disposed at the second end of the lever, the sealing assembly having two working states: open and closed. If the height of the second buoyancy member in the vertical direction exceeds a first threshold, the sealing assembly is in the closed state; if the height of the second buoyancy member in the vertical direction is lower than the first threshold, the sealing assembly is in the open state; when the second buoyancy member is in the open state, the corresponding second inlet pipe is opened; when the second buoyancy member is in the closed state, the corresponding second inlet pipe is closed.

[0018] As a specific embodiment of the technical solution of this application, the sealing assembly includes: a second control tube disposed at the end of the second inlet pipe, wherein the inner diameter of the second control tube decreases along the vertical direction; a connecting rod, the first end of which is hinged to the second end of the lever; and a sealing block disposed inside the second control tube, wherein the maximum outer diameter of the sealing block is greater than the minimum inner diameter of the second control tube; the sealing block is hinged to the second end of the connecting rod. As a specific embodiment of the technical solution of this application, the second buoyancy member has a hollow cavity, and a counterweight is disposed within the hollow cavity.

[0019] Compared with the prior art, the beneficial effects of this application are:

[0020] It can clean the surface of the filter column by rotating the bristles driven by the liquid to be filtered inside the filter box. In other words, it does not consume electricity, and its operation is more reliable compared to electric equipment and electronic control systems that are prone to failure. Attached Figure Description

[0021] Figure 1 This is a perspective view of a prior art filter box proposed in this application;

[0022] Figure 2 for Figure 1 A sectional view;

[0023] Figure 3 This is a perspective view of a filter box proposed in an embodiment of this application;

[0024] Figure 4 This is a three-dimensional schematic diagram of a driving structure proposed in an embodiment of this application;

[0025] Figure 5 This is a three-dimensional schematic diagram of yet another driving structure proposed in the embodiments of this application;

[0026] Figure 6 This is a three-dimensional schematic diagram of another driving structure proposed in the embodiments of this application;

[0027] Figure 7 for Figure 6 The main view;

[0028] Figure 8 This is a cross-sectional view (liquid level) of the filter box proposed in the embodiments of this application;

[0029] Figure 9 This is a cross-sectional view (low liquid level) of the filter box proposed in the embodiment of this application;

[0030] Figure 10 This is a three-dimensional schematic diagram of a liquid inlet assembly (with a control structure) proposed in an embodiment of this application;

[0031] Figure 11 for Figure 10 A sectional view;

[0032] Figure 12 This is a schematic diagram of yet another control structure proposed in the embodiments of this application (low liquid level);

[0033] Figure 13 for Figure 12 A schematic diagram of the control structure when the liquid level is high.

[0034] Figure 14 This is a three-dimensional schematic diagram of a connector proposed in an embodiment of this application.

[0035] In the diagram: 1. Filter box; 2. Filter column; 3. Sludge collection tank; 4. Liquid outlet; 5. Liquid inlet assembly; 51. Main liquid inlet pipe; 52. First branch liquid inlet pipe; 53. Second branch liquid inlet pipe; 54. First control pipe; 55. Second guide column; 56. First buoyancy component; 57. Second control pipe; 58. Support component; 59. Lever; 510. Second buoyancy component; 511. Connecting rod; 512. Blocking block; 513. Counterweight block; 514. Gap; 6. Filter column self-cleaning device; 61. Rotating shaft; 62. Impeller; 63. Second bevel gear; 64. Third bevel gear; 65. First guide column; 66. Ring component; 67. Connecting component; 68. Brush bristles; 69. Liquid inlet; 610. Blade; 7. Sludge discharge pipe. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] It should be noted that in the description of this application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0040] Before understanding the embodiments of this application, it is important to understand that the liquid to be filtered proposed in this application can be any liquid that requires physical filtration. For example, in some industrial applications, it is necessary to filter physical impurities in lubricating oil, so the liquid to be filtered can be lubricating oil; in applications such as landscape pools or fish ponds, it is necessary to filter physical impurities in the water, so the liquid to be filtered can be water. These examples will not be listed in detail here.

[0041] Commonly used filter box structures for liquids to be filtered in existing technologies include: Figure 1 and Figure 2 As shown, the filter box structure includes a filter box 1 and a filter column 2. The filter column 2 is typically arranged vertically. A sludge collection tank 3 is formed between the filter box 1 and the filter column 2 to hold the liquid to be filtered. The bottom of the filter box 1 has a liquid outlet 4 for communication with the filter column 2. The flow path of the liquid to be filtered is as follows... Figure 2 As shown in route A, it first enters the sludge collection tank 3 by external force (pumping or gravity, etc.), and after being filtered by the filter column 2 in the sludge collection tank 3, it leaves the filter box 1 through the liquid outlet 4. After filtration, the physical impurities in the liquid to be filtered are retained in the sludge collection tank 3.

[0042] It should be clear that, although the filter column 2 is arranged vertically in the accompanying drawings of the embodiments proposed in this application, the filter column self-cleaning device 6 proposed in this application is not only applicable to the filter box 1 where the filter column 2 is arranged vertically, but also applicable to the filter box 1 where the filter column 2 is arranged horizontally or inclined, which will not be elaborated in detail later.

[0043] In order to solve the technical problems mentioned in the background art, such as Figures 3 to 9 As shown, an embodiment of this application proposes a filter column self-cleaning device 6. This filter column self-cleaning device 6 is mainly used in a filter box 1 for filtering liquids, and a filter column 2 is disposed inside the filter box 1. Specifically, the filter column self-cleaning device 6 includes an annular component 66, a connecting component 67, a driving structure, and multiple bristles 68. Specifically, the annular component 66 is used to fit around the outside of the filter column 2 and can form a rotatable connection with the filter column 2. The connecting component 67 is disposed on the annular component 66, one end of each bristle 68 is fixed to the connecting component 67, and the other end of each bristle 68 is used to contact the outer surface of the filter column 2. The driving structure is used to receive the impact of the liquid to be filtered input into the filter box 1 and drive the annular component 66 to rotate by means of the impact force.

[0044] As described above, in the embodiments of this application, the liquid to be filtered, located outside the filter box 1, needs to be input into the filter box 1. The liquid to be filtered input into the filter box 1 then drives the annular component 66 to rotate. The rotating annular component 66 can drive the connecting component 67 to rotate, and the bristles 68 on the connecting component 67 come into contact with the outer surface of the filter column 2. That is to say, the bristles 68 can clean the outer surface of the filter column 2.

[0045] In the embodiments of this application, the main function of the connector 67 is to connect the brush bristles 68 so that the brush bristles 68 can contact the outer surface of the filter column 2. That is, in the embodiments of this application, there is no limitation on the shape and structure of the connector 67; it can be any feasible shape or structure. For example, in one embodiment of this application, such as... Figures 4 to 7 As shown, the connector 67 includes multiple connecting strips, each extending along the axis of the filter column 2. To ensure dynamic balance during rotation of the annular component 66, in this embodiment, the connecting strips can be evenly distributed around the circumference of the filter column 2. In another embodiment of this application, as... Figure 14 As shown, the connector 67 includes a cylindrical tube, the axis of which coincides with the axis of the filter column 2. To ensure that the liquid to be filtered can smoothly enter the cylindrical tube, multiple inlet holes 69 can be provided on the side wall of the cylindrical tube. The inlet holes 69 are used for the liquid to be filtered to enter the interior of the cylindrical tube.

[0046] It should be clear that the rotational connection between the shaft (e.g., filter column 2 or rotating shaft 61 in the following text) and the ring (e.g., annular component 66) is a mature existing technology, for example, the filter column 2 and the annular component 66 are rotated together by bearings. In the following text, the rotational connection between the rotating shaft 61 and the filter box 1 is also in this manner, and will not be elaborated on further.

[0047] It should be clear that in the embodiments of this application, the driving structure is mainly used to drive the annular member 66 to rotate by means of a fluid (i.e., the flowing liquid to be filtered). That is to say, in the embodiments of this application, the driving structure can be any suitable structure for fluid-driven operation. For example, in one embodiment of this application, such as... Figure 4 As shown, the annular component 66 can be a circular ring, and the driving structure includes multiple blades 610 disposed on the circular ring, with each blade 610 evenly distributed around the circumference of the ring. The circular ring and each blade 610 constitute an impeller structure, and the circular ring (i.e., the annular component 66) can be rotated by the impact of fluid on each blade 610. In another embodiment of this application (not shown in the figure), the annular component 66 can be a first sprocket; the driving structure includes a rotating shaft, an impeller, a second sprocket, and a chain, with the axis of the rotating shaft approximately parallel to the vertical direction. The impeller and the second sprocket are disposed on the rotating shaft, and the axes of the rotating shaft, the impeller, and the second sprocket coincide. The chain is used to form a transmission connection between the first sprocket and the second sprocket. It is easy to understand that if fluid is used to impact the impeller, the impeller can drive the second sprocket to rotate through the rotating shaft, and the second sprocket can drive the first sprocket (i.e., the annular component 66) to rotate through the chain.

[0048] It is important to understand that in applications where filter column 2 is positioned vertically, if the drive structure is as follows... Figure 4As shown, the liquid to be filtered needs to be fed into the filter box 1 through a pump or other conveying device, and the flowing liquid needs to exert a strong impact force on each blade 610 to make the annular component 66 rotate. In application scenarios without a conveying device or where the conveying force generated by the conveying device is small, it is impossible to drive the annular component 66 to rotate.

[0049] In one embodiment of this application, in order to make the drive structure suitable for applications without a conveying device or with a small conveying force (the axis of the filter column 2 is approximately parallel to the vertical direction), as follows: Figure 5 and Figure 6 As shown, the annular component 66 can be a first bevel gear. The drive structure includes a rotating shaft 61, an impeller 62, and a transmission assembly. The axis of the rotating shaft 61 is approximately perpendicular to the vertical direction, and the shaft 61 is used to form a rotatable connection with the filter box 1. The impeller 62 is disposed on the rotating shaft 61, and the axis of the impeller 62 coincides with the axis of the rotating shaft 61. That is, after the fluid impacts the impeller 62, the impeller 62 can drive the rotating shaft 61 to rotate. The transmission assembly is used to form a transmission connection between the first bevel gear and the rotating shaft 61. In other words, the rotating shaft 61 can drive the annular component 66 to rotate through the transmission assembly. In the embodiments of this application, since the axis of the impeller 62 is approximately parallel to the horizontal plane, in applications without a conveying device or where the conveying force generated by the conveying device is small, the flow direction of the fluid can be controlled to be vertical (e.g., by using a faucet to make the fluid flow vertical), thereby increasing the impact force of the fluid on the impeller 62 by gravity. The magnitude of the impact force can be adjusted by adjusting the vertical distance between the faucet and the impeller 62.

[0050] It is easy to understand that, in reality, it is difficult to ensure that the centerline of a certain axis (e.g., the centerline of the impeller 62, the centerline of the rotating shaft 61, or the centerline of the first guide post 65 in this application) strictly follows a certain direction (e.g., perpendicular to or parallel to the vertical direction). Therefore, in the embodiments of this application, the centerline of a certain axis is approximated by a certain direction to indicate that the centerline of a certain axis is made as close to a certain direction as possible during the manufacturing process. That is to say, in the embodiments of this application, the centerline of a certain axis approximating a certain direction means that the centerline and the direction can form a certain angle. It should be clear that if the angle is too large during the manufacturing process, the self-cleaning device of the filter column may become unusable. After multiple experiments by the applicant, it has been verified that if the angle is greater than or equal to 0° and less than or equal to 10°, the self-cleaning device of the filter column can be used well.

[0051] In the embodiments of this application, such as Figure 5As shown, the transmission component can be a second bevel gear 63, which is mounted on the rotating shaft 61 and meshes with the first bevel gear. Specifically, the fluid falling vertically can drive the impeller 62 to rotate, that is, the rotating shaft 61 can drive the second bevel gear 63 to rotate. Since the second bevel gear 63 meshes with the first bevel gear (i.e., the ring member 66), the ring member 66 can also rotate.

[0052] It is important to understand that the filter column self-cleaning device 6 proposed in this application embodiment is mainly used to clean the clogged filter column 2. That is, if the filter column 2 is not clogged, it is not necessary to clean it, and in other words, if the filter column 2 is not clogged, the annular member 66 does not need to rotate. In other words, if the filter column 2 is not clogged and the annular member 66 continues to rotate, it is easy to reduce the service life of the filter column 2 or the bristles 68.

[0053] To extend the service life of the filter column 2 or the bristles 68, in another embodiment of this application, such as... Figure 6 As shown, the transmission assembly includes a second bevel gear 63, a first guide post 65, and a third bevel gear 64. The second bevel gear 63 is disposed on the rotating shaft 61, meaning that if the rotating shaft 61 rotates, the second bevel gear 63 also rotates. The first guide post 65 is disposed inside the filter box 1, and the axis of the first guide post 65 is approximately parallel to the vertical direction. The third bevel gear 64 is movably sleeved on the first guide post 65, meaning that the third bevel gear 64 can slide along the axis of the first guide post 65 (i.e., approximately the vertical direction). The third bevel gear 64 can form a rotatable connection with the first guide post 65, and the third bevel gear 64 can float on the liquid to be filtered. In the embodiments of this application, as... Figure 8 and Figure 9 As shown, the third bevel gear 64 can move freely in an approximately vertical direction and can float on the liquid to be filtered. That is, the height of the third bevel gear 64 in the approximately vertical direction depends on the liquid level inside the filter box 1. Figure 9 As shown, if the liquid level of the liquid to be filtered inside the filter box 1 is low (the liquid level is not shown in the figure), the third bevel gear 64 cannot mesh with the second bevel gear 63 and the first bevel gear (i.e., the ring part 66). In other words, the ring part 66 cannot rotate with the rotating shaft 61, meaning the bristles 68 will not rub against the surface of the filter column 2. Figure 8As shown, if the liquid level of the liquid to be filtered inside the filter box 1 is high enough (the liquid level is not shown in the figure), the third bevel gear 64 can mesh with the second bevel gear 63 and the first bevel gear (i.e., the ring part 66). That is, if the rotating shaft 61 rotates, the ring part 66 can also rotate, meaning that the bristles 68 can rub against the surface of the filter column 2, thus cleaning the surface of the filter column 2.

[0054] As mentioned above, in the application scenario of this application embodiment, a continuous external supply of liquid to be filtered is required to enter the filter box 1. Generally, to avoid overflow of the liquid to be filtered in the filter box 1 due to excessive liquid during long-term use, the input speed of the liquid to be filtered into the filter box 1 (hereinafter referred to as the first speed) must be less than or equal to the output speed of the liquid to be filtered from the filter box 1 (hereinafter referred to as the second speed), provided that the filter column 2 is not blocked. That is to say, during long-term use, if the filter column 2 becomes blocked to the point that the first speed is greater than the second speed, the liquid level of the liquid to be filtered inside the filter box 1 will definitely rise. In the embodiment of this application, if the liquid level of the liquid to be filtered inside the filter box 1 rises to a sufficient height, the third bevel gear 64 can mesh with the second bevel gear 63 and the first bevel gear, that is, the bristles 68 can clean the surface of the filter column 2. If the filter column 2 is not clogged or only slightly clogged, meaning the first speed is less than the second speed, the liquid level of the liquid to be filtered inside the filter box 1 drops. After dropping to a certain height, the third bevel gear 64 cannot mesh with the second bevel gear 63 and the first bevel gear. Through this transmission component, the bristles 68 only clean the outer surface of the filter column 2 when it is clogged; otherwise, they do not clean it. This transmission component effectively extends the service life of both the bristles 68 and the filter column 2.

[0055] The filter column self-cleaning device proposed in this application can clean the surface of the filter column by rotating the bristles driven by the liquid to be filtered input into the filter box. In other words, it does not consume electrical energy, and its working capability is more reliable compared to electric equipment and electronic control systems that are prone to failure.

[0056] After introducing the filter column self-cleaning device proposed in the embodiments of this application, the following describes an embodiment of a filter box structure proposed in this application.

[0057] like Figure 3 As shown, the filter box structure includes a filter box 1, a filter column 2, and a filter column self-cleaning device 6 as proposed in any of the above embodiments.

[0058] As described above, the filter column self-cleaning device 6 proposed in this application requires the impact of the liquid to be filtered entering the filter box 1 to function. In a specific embodiment of this application, the filter box structure further includes a liquid inlet assembly 5, which is used to input the liquid to be filtered into the interior of the filter box 1 to impact the drive structure in the filter column self-cleaning device 6.

[0059] It is important to understand that in the embodiments of this application, the liquid inlet assembly 5 can be a water pipe or a faucet, etc. As mentioned above, the more severe the blockage of the filter column 2, the higher the liquid level of the liquid to be filtered in the filter box 1, meaning the filter column 2 needs cleaning more frequently. It is easy to understand that the faster the annular component 66 rotates, the faster the filter column 2 is cleaned; the faster the flow rate of the fluid (i.e., the liquid to be filtered entering the filter box 1), the faster the driving structure (e.g., blades 610 or impeller 62) drives the annular component 66. In short, the faster the fluid flow rate, the faster the annular component 66 rotates, and the faster the filter column 2 is cleaned.

[0060] After filter column 2 becomes clogged, it needs to be cleaned based on the degree of clogging. For example... Figure 3 and Figure 10 As shown, in a specific embodiment of this application, the liquid inlet assembly 5 includes a main liquid inlet pipe 51, a first branch liquid inlet pipe 52, at least one second branch liquid inlet pipe 53, and a control structure corresponding to each of the second branch liquid inlet pipes 53. The main liquid inlet pipe 51 is used to input the liquid to be filtered into the interior of the filter box 1. The first branch liquid inlet pipe 52 and each of the second branch liquid inlet pipes 53 are connected to the main liquid inlet pipe 51. In this embodiment, the first branch liquid inlet pipe 52 and each of the second branch liquid inlet pipes 53 are used to guide the liquid to be filtered in the main liquid inlet pipe 51 into the interior of the filter box 1. The first branch liquid inlet pipe 52 is used to impact the drive structure (e.g., blade 610 or impeller 62), and the control structure is used to open or close the corresponding second branch liquid inlet pipe 53 based on the liquid level inside the filter box 1.

[0061] It is easy to understand that, with constant fluid pressure, a smaller flow path results in a faster fluid velocity. In other words, in the embodiments of this application, the more second inlet pipes 53 are closed, the faster the fluid velocity in the first inlet pipe 52, and consequently, the faster the annular component 66 rotates. In other words, in the embodiments of this application, the rotation speed of the annular component 66 can be controlled by closing a corresponding number of second inlet pipes 53 based on the liquid level inside the filter box 1. For example, if the liquid level inside the filter box 1 is higher (i.e., the more severely clogged the filter column 2), then closing more second inlet pipes 53 will result in a faster rotation of the annular component 66, and thus faster cleaning of the filter column 2.

[0062] In one embodiment of this application, the control structure includes an electronic level gauge and a solenoid valve. The electronic level gauge is installed inside the filter tank 1 to detect the liquid level inside the filter tank 1. The solenoid valve is installed in the second inlet pipe 53 to control the opening and closing of the second inlet pipe 53. The solenoid valve is electrically connected to the electronic level gauge. If the liquid level inside the filter tank 1 reaches a corresponding threshold, the solenoid valve can close a corresponding number of the second inlet pipes 53. It should be noted that the linkage between the electronic level gauge and the solenoid valve is a mature prior art, and therefore will not be elaborated upon in this embodiment.

[0063] In another embodiment of this application, to further avoid using electronic devices (e.g., electronic level gauges and solenoid valves) in the filter box 1, such as... Figure 10 As shown, the end of each second sub-inlet pipe 53 faces downwards. In the embodiments of this application, we define the end of the second sub-inlet pipe 53 connected to the main inlet pipe 51 as the beginning end, and the other end of the second sub-inlet pipe 53 as the end end. The control structure includes a second guide post 55 and a first buoyancy member 56. The second guide post 55 is disposed in the filter box 1, and the first buoyancy member 56 is movably sleeved on the outside of the second guide post 55. That is, the first buoyancy member 56 can move along the axial direction of the second guide post 55. Specifically, the axis of the second guide post 55 is parallel to the vertical direction, and the second guide post 55 extends into the corresponding second sub-inlet pipe 53. The first buoyancy member 56 can float on the liquid to be filtered, that is, the height of the first buoyancy member 56 in the vertical direction mainly depends on the height of the liquid level inside the filter box 1. The maximum outer diameter of the first buoyancy member 56 is greater than the inner diameter of the second sub-inlet pipe 53, that is, the first buoyancy member 56 can completely block the second sub-inlet pipe 53.

[0064] It is easy to understand, such as Figure 9 As shown, if the liquid level inside the filter box 1 is low, the first buoyancy component 56 cannot block the second sub-inlet pipe 53 (i.e., the second sub-inlet pipe 53 is open), and the liquid to be filtered in the main inlet pipe 51 can enter the filter box 1 through the second sub-inlet pipe 53. Figure 8 As shown, if the liquid level inside the filter tank 1 is high enough, the buoyancy exerted by the liquid to be filtered on the first buoyancy member 56 is greater than the pressure of the liquid in the second inlet pipe 53. Therefore, the first buoyancy member 56 can completely block the second inlet pipe 53 (i.e., close the second inlet pipe 53). In other words, in the embodiments of this application, the first buoyancy member 56 can open or close the second inlet pipe 53 based on the height of the liquid level inside the filter tank 1.

[0065] In order to gradually reduce the flow path of the second inlet pipe 53 until it is closed based on the liquid level inside the filter box 1, in one embodiment of this application, each second inlet pipe 53 is provided with a first control pipe 54 at its end. The inner diameter of the first control pipe 54 increases in the vertical direction, and the first buoyancy member 56 is adapted to the first control pipe 54. Figure 10 and Figure 11 As shown, the second inlet pipe 53 is funnel-shaped, while the first buoyancy member 56 is frustum-shaped. If the liquid level in the filter tank 1 gradually rises, the first buoyancy member 56 also rises accordingly. During the rise of the first buoyancy member 56, the flow path of the second inlet pipe 53 gradually decreases. Of course, in the embodiments of this application, the first buoyancy member 56 can also be spherical.

[0066] In another embodiment of this application, such as Figure 12 and Figure 13 As shown, the control structure includes a support member 58, a lever 59, a second buoyancy member 510, and a sealing assembly. The support member 58 is disposed in the filter box 1, and the lever 59 is hinged to the support member 58. The second buoyancy member 510 is disposed at the first end of the lever 59, and the sealing assembly is disposed at the second end of the lever 59. That is, the height changes of the second buoyancy member 510 and the sealing assembly in the vertical direction are opposite; if the second buoyancy member 510 rises, the sealing assembly lowers; if the second buoyancy member 510 lowers, the sealing assembly rises. In the embodiments of this application, the second buoyancy member 510 can float on the liquid to be filtered; that is, the height of the second buoyancy member 510 in the vertical direction depends on the liquid level in the filter box 1.

[0067] In the embodiments of this application, the sealing component has two working states: open and closed. If the vertical height of the second buoyancy member 510 exceeds a first threshold, the sealing component is in the closed state; if the vertical height of the second buoyancy member 510 is lower than the first threshold, the sealing component is in the open state. When the second buoyancy member 510 is in the open state, the corresponding second inlet pipe 53 is open; when the second buoyancy member 510 is in the closed state, the corresponding second inlet pipe 53 is closed. The first threshold can be designed according to actual needs.

[0068] like Figure 12 and Figure 13 As shown in the embodiments of this application, the sealing assembly includes a second control tube 57, a connecting rod 511, and a sealing block 512. The second control tube 57 is located at the end of the second inlet pipe 53, and its inner diameter decreases along the vertical direction. The first end of the connecting rod 511 is hinged to the second end of the lever 59, and the sealing block 512 is hinged to the second end of the connecting rod 511. The sealing block 512 is disposed within the second control tube 57, and its maximum outer diameter is greater than the minimum inner diameter of the second control tube 57.

[0069] Specifically, such as Figure 12 As shown, if the liquid level in filter box 1 is low (i.e., filter column 2 is not blocked), the blocking block 512 is positioned high enough under the support of connecting rod 511, that is, a gap 514 is formed between the blocking block 512 and the second control pipe 57, and the liquid to be filtered in the second inlet pipe 53 can enter filter box 1 through the gap 514. Figure 13 As shown, if the liquid level in filter tank 1 is high enough (i.e., filter column 2 is blocked), the blocking block 512 will descend in height under the action of connecting rod 511 until it blocks the second control pipe 57, that is, blocks the second liquid inlet pipe 53. It is readily understood that in the embodiments of this application, the blocking block 512 can be of any shape or structure, for example: Figure 12 and Figure 13 The shape shown is spherical or frustum-shaped (not shown in the figure).

[0070] It should be clear that, in order for the second buoyancy member 510 in this embodiment to generate both sufficient buoyancy and sufficient gravity, in one embodiment of this application, such as Figure 12 and Figure 13 As shown, the second buoyancy member 510 has a hollow cavity, and a counterweight 513 is disposed within the hollow cavity. In embodiments of this application, the second buoyancy member 510 and the counterweight 513 can be of any shape or structure, for example: they can be cuboids, cubes (not shown in the figure), or... Figure 12 and Figure 13 The spherical shape shown.

[0071] As mentioned above, a dirt collection tank 3 is formed between the filter box 1 and the filter column 2, and all the filtered physical impurities are present in the dirt collection tank 3. To facilitate cleaning of the dirt collection tank 3, such as... Figure 8 and Figure 9 As shown, a drain pipe 7 is also provided at the bottom of the filter box 1, and the drain pipe 7 is connected to the sludge collection tank 3. Furthermore, a control valve is provided on the drain pipe 7 to control the opening and closing of the drain pipe 7.

[0072] The filter box proposed in this application embodiment can clean the surface of the filter column by rotating the bristles driven by the liquid to be filtered input into the filter box. In other words, it does not consume electrical energy, and its working capability is more reliable compared to electric equipment and electronic control systems that are prone to failure.

[0073] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter column self-cleaning device (6) applied to a filter box (1), wherein a filter column (2) is arranged in the filter box (1), characterized in that, The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same.

2. The filter column self-cleaning device (6) according to claim 1, characterized in that, The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same.

3. A filter tank (1) characterized in that, The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same.

4. The filter tank (1) according to claim 3, characterized in that The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same.

5. The filter tank (1) according to claim 4, characterized in that The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. The utility model relates to a filter column self-cleaning device (6) and a filter box (1) comprising the same. 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6. The filter tank (1) according to claim 5, characterized in that The control structure comprises: An electronic liquid level gauge is arranged in the filter box (1); An electromagnetic valve is arranged in the second sub-inlet pipe (53), and the electromagnetic valve is electrically connected with the electronic liquid level gauge.

7. The filter tank (1) according to claim 5, characterized in that The end of each second sub-inlet pipe (53) is downward, and the control structure comprises: A second guide column (55) is arranged in the filter box (1); the second guide column (55) has an axis parallel to the vertical direction, and the second guide column (55) extends into the corresponding second sub-inlet pipe (53); A first buoyant member (56) is movably sleeved outside the second guide column (55), and the first buoyant member (56) can float in the liquid to be filtered; the maximum outer diameter of the first buoyant member (56) is greater than the inner diameter of the second sub-inlet pipe (53).

8. The filter tank (1) according to claim 7, characterized in that The end of each second sub-inlet pipe (53) is provided with a first control pipe (54), and the inner diameter of the first control pipe (54) increases along the vertical direction; the first buoyant member (56) is matched with the first control pipe (54).

9. The filter tank (1) according to claim 5, characterized in that The control structure comprises: A support member (58) is arranged in the filter box (1); A lever (59) is hingedly connected with the support member (58); A second buoyant member (510) is arranged at the first end of the lever (59), and the second buoyant member (510) can float in the liquid to be filtered; A blocking assembly is arranged at the second end of the lever (59), and the blocking assembly has two working states of opening and closing; if the height of the second buoyant member (510) along the vertical direction exceeds a first threshold value, the blocking assembly is in the closed state; if the height of the second buoyant member (510) along the vertical direction is lower than the first threshold value, the blocking assembly is in the open state; if the second buoyant member (510) is in the open state, the corresponding second sub-inlet pipe (53) is opened; if the second buoyant member (510) is in the closed state, the corresponding second sub-inlet pipe (53) is closed.

10. The filter tank (1) according to claim 9, characterized in that The blocking assembly comprises: A second control pipe (57) is arranged at the end of the second sub-inlet pipe (53), and the inner diameter of the second control pipe (57) decreases along the vertical direction; A connecting rod (511) is hingedly connected at the first end with the second end of the lever (59); A blocking block (512) is arranged in the second control pipe (57), and the maximum outer diameter of the blocking block (512) is greater than the minimum inner diameter of the second control pipe (57); the blocking block (512) is hingedly connected with the second end of the connecting rod (511).

11. The filter tank (1) according to claim 9, characterized in that The second buoyant member (510) has a hollow cavity, and a counterweight (513) is arranged in the hollow cavity.

Images