Full-automatic bottom control backwash and can control large particle pollution and valve closing inverted filter

Abstract

The utility model relates to a kind of inverted filter of full-automatic bottom control backwash and can control large particle blowdown and valve closing, including controller, head assembly, filter bottle and filter and backwash mechanism, head assembly is equipped with filter bottle assembly end, head cavity and blowdown end, filter bottle is fixed with filter bottle assembly end cooperation, filter and backwash mechanism include coaxially arranged filter mechanism and backwash mechanism, blowdown end is rotatably provided with blowdown piece, flow channel switching cover is equipped in head cavity, flow channel switching cover is equipped with flow channel switching cavity, flow channel switching cavity is equipped with first assembly port, second assembly port, outlet channel and large particle direct discharge flow channel, flow channel switching cavity is connected with the end of backwash mechanism by first assembly port and axial sliding seal, connect with blowdown piece by second assembly port, backwash mechanism is equipped with central tube, central tube is communicated with the blowdown channel of blowdown piece, blowdown piece side wall is equipped with blowdown communication port. Structure is more optimized, easily matched installation occasion.

Description

Technical Field

[0001] This utility model relates to an inverted filter with fully automatic bottom-controlled backwashing and the ability to control the discharge of large particles and close the valve, belonging to the technical field of water purification equipment. Background Technology

[0002] The mainstream pre-filters in the current technology are of the bottom-mounted filter bottle type, including: a head unit, a filter bottle connected to the head unit at the top, and a drain ball valve connected to the bottom of the filter bottle. A filter element frame is installed inside the filter bottle, and the filter element is fitted onto the outer wall of the filter element frame. During use, water flows from the inlet of the head unit into the gap between the filter bottle and the filter element, is filtered by the filter element, flows into the center of the filter element frame, and then flows from the center of the filter element frame to the outlet of the head unit. When drainage is required, the drain ball valve at the bottom of the filter bottle is opened.

[0003] In some installation scenarios, the installation of this type of bottom-mounted pre-filter is inconvenient. Therefore, the inverted pre-filter was developed to meet market demand. In addition to the inlet, outlet and filter bottle installation port, the valve head of this type of pre-filter also needs to be equipped with a drain port. That is, the function of the drain ball valve originally located at the bottom of the filter bottle needs to be transferred to the valve head. Therefore, the traditional valve head structure needs to be optimized and adjusted.

[0004] In addition, during the use of a pre-filter, the filter elements need to be cleaned regularly. This is generally achieved through a backwashing mechanism, with the wastewater discharged through the drain port. However, the backwashing process involves both direct flushing for large particles and backwashing for small particles and stubborn impurities. The system needs to be able to switch between these two modes to meet different needs. This invention aims to provide a fully automatic bottom-controlled backwashing inverted filter with a more optimized structure, easy compatibility with installation environments, multiple drain channels to meet different application modes, and the ability to control the discharge of large particles and close the valve. Utility Model Content

[0005] One of the purposes of this utility model is to address the shortcomings of existing pre-filters and provide an inverted filter with a more optimized structure, easy matching with installation occasions, multiple sewage discharge channels to meet different application modes, fully automatic bottom control backwashing, and the ability to control the discharge of large particles and close the valve.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A fully automatic bottom-controlled backwashing inverted filter capable of controlling large particle discharge and valve closure includes a controller, a head assembly, a filter bottle, and a filtration and backwashing mechanism. The head assembly has an inlet end, an outlet end, an upward-facing assembly end, a head cavity, and a discharge end. The filter bottle is fixedly fitted to the assembly end. The filtration and backwashing mechanism is located inside the filter bottle and includes a coaxially arranged filtration mechanism and a backwashing mechanism. The cavity between the filtration mechanism and the filter bottle forms a raw water cavity. The discharge end is rotatably equipped with a discharge component. The head cavity has a flow channel switching cover with a flow channel switching chamber. The flow channel switching chamber has a first assembly port, a second assembly port, an outlet channel, and a large particle direct discharge channel. The flow channel switching chamber is adapted to the end of the backwashing mechanism through the first assembly port and is axially slidably sealed. It is connected to the discharge component through the second assembly port. The backwashing mechanism has a central pipe that communicates with the discharge channel of the discharge component. The side wall of the discharge component has a discharge connection port.

[0008] The sewage discharge component is equipped with a sewage discharge valve, which is an electric sewage discharge valve or a manual-electric integrated sewage discharge valve;

[0009] The sewage discharge component is fixedly provided with a first gear, and the sewage discharge valve is provided with a second gear. The first gear and the second gear mesh with each other. It also includes a drive motor, and the drive shaft of the drive motor is connected to the drive end of the first gear or the second gear.

[0010] The drive motor is electrically connected to the controller;

[0011] In the initial state, the drain valve is closed, the drain connection port is offset from the large particle direct discharge channel of the flow channel switching hood, and thus disconnected from the water inlet. The water inlet is connected to the raw water chamber, and the inner cavity of the filter mechanism, the flow channel switching chamber, the water outlet channel and the water outlet are connected in sequence, and the filter is in filtration mode.

[0012] The drive motor drives the sewage discharge component to rotate relative to the flow channel switching cover until the water inlet, large particle direct discharge channel, sewage discharge connection port and sewage discharge component are connected in sequence, and the sewage discharge channel of the sewage discharge component is opened to the large particle sewage discharge mode.

[0013] The drive motor drives the drain valve to open, and at the same time rotates relative to the flow channel switching cover. The drain connection port is offset from the large particle direct discharge flow channel of the flow channel switching cover. The backwashing mechanism moves axially upward relative to the filter mechanism to close the water inlet passage of the raw water chamber. The water inlet end, flow channel switching chamber, filter mechanism inner cavity, raw water chamber, central pipe and drain component are connected in sequence, and the backwashing and draining mode is entered.

[0014] Preferably, the controller is a PLC controller, which is equipped with a remote wireless communication module for communicating with a remote server and user terminals. The controller has a processor function and integrates at least one MCU. The MCU controls the operation of its electrically connected components. The remote wireless communication module is any one or a combination of two of the following: 2G module, 3G module, 4G module and 5G module.

[0015] Preferably, the filtration mechanism includes a filter frame and filter elements. The filter frame includes a frame body, an inlet end cap, and a frame bottom cap. The inlet end cap has a raw water inlet channel communicating with the raw water chamber and a backwash frame assembly port. The frame bottom cap has a backwash frame assembly port. The backwash mechanism includes a backwash frame with a central tube inserted into it. The backwash frame is divided into an adjustment section and an assembly section. The assembly section is inserted into the frame body and fixed to the frame bottom cap. The adjustment section is adapted to the first assembly port. The adjustment section also has a sealing part with a sealing end face. When the backwash mechanism moves axially, the sealing end face can close or open the raw water inlet channel. It also includes an elastic reset member, which is located between the frame body and the backwash frame. The end of the assembly section of the backwash frame is fixedly connected to a backwash opening cover. Under the pressure difference on both sides of the backwash opening cover, the backwash mechanism is driven to move axially relative to the filtration mechanism. When it moves upward, it closes the raw water inlet channel, and the adjustment section is exposed from the first assembly port, entering the backwash mode. When it moves downward, it opens the raw water inlet channel, and the adjustment section extends into the first assembly port, entering the filtration mode.

[0016] Preferably, there is a pressure difference ΔP on both sides of the backwash opening cover. When ΔP ≥ 0 and the force corresponding to ΔP is greater than the reaction force of the elastic reset member 4, the elastic reset member is stretched or compressed, and the backwash mechanism moves upward axially against the direction of sewage flow. When the force corresponding to ΔP is less than the reaction force of the elastic reset member, the elastic reset member is reset, and the backwash mechanism moves downward axially in the direction of sewage flow. The pressure difference ΔP is adjusted by opening and closing the sewage discharge channel of the sewage discharge member.

[0017] Preferably, the filter frame is a filter mesh frame, and the filter element is a filter mesh or PP cotton; or the filter frame is a stacked frame, and the filter element is a stacked filter disc.

[0018] Preferably, the tail end of the stacked frame is provided with a stacking adjustment component for adjusting the tightness of the stacked pieces.

[0019] Preferably, the top of the filter bottle is provided with a drive port, and the drive port is rotatably and sealed to a drive component, the inner end of which is fixed in the circumferential direction to the disc adjustment component.

[0020] Preferably, the flow channel switching cover is integrally molded from an inert material, which is rubber or plastic, or at least the side in contact with water has an inert material coating, which is plastic, rubber, or ceramic; the inlet end, outlet end, and assembly end are provided with isolation bushings, which are made of inert material and include an inlet end isolation bushing, an outlet end isolation bushing, and an assembly end isolation bushing, integrally injection molded from plastic or rubber material; or the isolation bushing has an inert material coating on at least the side in contact with water, which is plastic, rubber, or ceramic.

[0021] Preferably, the drive motor is vertically mounted on the motor base, and the drive shaft of the drive motor is connected to the drive end of the second gear. When the second gear is driven to open the drain valve, it indirectly drives the first gear to rotate, thereby driving the rotation of the drain component.

[0022] Preferably, the filtration mechanism is further fitted with a vortex flow channel assembly, including a vortex flow channel seat and several blades arranged circumferentially around the vortex flow channel seat, the blades being inclined.

[0023] Preferably, a limiting member is provided between the tail end of the stacked plate skeleton and the stacked plate adjusting member. When rotated in one direction, the tightness of the stacked plates can be adjusted. When rotated in the opposite direction, the stacked plate skeleton can be driven to rotate and scrape the impurities attached to the inner wall of the filter bottle.

[0024] The beneficial effects of this utility model are: This utility model realizes the setting of water inlet end, water outlet end, upward assembly end and sewage discharge end of the machine head, and also sets a flow channel switching cover, that is, the function of the drain ball valve originally set at the lower end of the filter bottle is transferred to the machine head, which effectively optimizes and adjusts the traditional machine head structure. During filtration, raw water flows sequentially from the inlet end into the inlet channel and raw water chamber of the filter mechanism. After filtration, it flows out through the flow channel switching chamber, the outlet channel, and the outlet end. Large particles of impurities accumulate around the inlet end and the flow channel switching cover, and can be directly discharged through the large particle direct discharge channel. The drain component rotates relative to the flow channel switching cover until the inlet end, the large particle direct discharge channel, the drain connection port, and the drain component are sequentially connected, and the outlet channel is disconnected from the outlet end. The drain channel of the drain component is open in the large particle discharge mode. In the backwashing mode, the drain channel of the drain component is open, and it rotates relative to the flow channel switching cover. The drain connection port is misaligned with the large particle direct discharge channel of the flow channel switching cover. The backwashing mechanism moves axially upward relative to the filter mechanism to close the inlet passage of the raw water chamber. The inlet end, the flow channel switching chamber, the inner cavity of the filter mechanism, the raw water chamber, the central pipe, and the drain component are sequentially connected. The structure is more optimized, making it easier to match installation occasions and providing multiple drain channels to meet different application modes. Set up a controller to achieve automated control; set up the controller with remote communication function to achieve remote management and control. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 yes Figure 1 Exploded view;

[0028] Figure 3 This is a partial schematic diagram of the present invention;

[0029] Figure 4 yes Figure 3 A sectional view;

[0030] Figure 5 This is a cross-sectional view of the present invention in a filtered state;

[0031] Figure 6 This is a cross-sectional view of the large-particle sewage discharge state of this utility model;

[0032] Figure 7 This is a cross-sectional view of the backwashing and sewage discharge state of this utility model.

[0033] In the diagram: 1. Head assembly, 11. Inlet, 12. Outlet, 13. Assembly end, 14. Head cavity, 15. Sewage discharge end, 15a. Sewage discharge chamber, 15a-1. Sewage discharge connection port, 2. Flow channel switching cover, 21. Large particle direct discharge channel, 22. Flow channel switching cavity, 22a. First assembly port, 22b. Second assembly port, 22c. Outlet channel, 3. Central pipe, 4. Elastic reset component, 5. Backwash opening cover, 6. Water sealing part, 7. Filter bottle, 8. Filter frame, 81. Inlet cover, 82. Frame bottom cover, 9. Filter element, 10. Backwash frame, a. Vortex flow channel assembly, b. Drive motor, c. Second gear, d. First gear, e. Drive component, f. Disc adjustment component, g. Sewage discharge valve, h. Controller. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0036] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] like Figure 1-7 As shown, an inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure includes a controller h, a head assembly 1, a filter bottle 7, and a filtration and backwashing mechanism. The head assembly 1 has an inlet end 11, an outlet end 12, an upward-facing assembly end 13, a head cavity 14, and a discharge end 15. The filter bottle 7 is fixedly fitted to the assembly end 13. The filtration and backwashing mechanism is located inside the filter bottle 7. The filtration and backwashing mechanism includes a filtration mechanism and a backwashing mechanism arranged coaxially. The cavity between the filtration mechanism and the filter bottle 7 forms a raw water cavity. The discharge end 15 is rotatably equipped with a discharge component 15a. Its characteristic is... The machine head cavity 14 is provided with a flow channel switching cover 2. The flow channel switching cover 2 is provided with a flow channel switching chamber 22. The flow channel switching chamber 22 is provided with a first assembly port 22a, a second assembly port 22b, a water outlet channel 22c, and a large particle direct discharge channel 21. The flow channel switching chamber 22 is adapted to the end of the backwashing mechanism through the first assembly port 22a and is axially slidably sealed. It is connected to the sewage discharge component 15a through the second assembly port 22b. The backwashing mechanism is provided with a central pipe 3. The central pipe 3 is connected to the sewage discharge channel of the sewage discharge component 15a. The side wall of the sewage discharge component 15a is provided with a sewage discharge connection port 15a-1.

[0039] The sewage discharge component 15a is equipped with a sewage discharge valve g, which is an electric sewage discharge valve or a manual-electric integrated sewage discharge valve.

[0040] The sewage discharge component 15a is fixedly provided with a first gear c, and the sewage discharge valve g is provided with a second gear d. The first gear c and the second gear d mesh with each other. It also includes a drive motor b, and the drive shaft of the drive motor b is connected to the drive end of the first gear c or the second gear d.

[0041] Drive motor b is electrically connected to controller h;

[0042] In the initial state, the drain valve g is closed, the drain connection port 15a-1 is offset from the large particle direct discharge channel 21 of the flow channel switching cover 2, and is thus disconnected from the water inlet 11. The water inlet 11 is connected to the raw water chamber, and the inner cavity of the filter mechanism, the flow channel switching chamber 22, the water outlet channel 22c are connected to the water outlet 12 in sequence, and the filter is in the filtration mode.

[0043] Drive motor b drives the sewage discharge component 15a to rotate relative to the flow channel switching cover 2 until the water inlet 11, the large particle direct discharge channel 21, the sewage discharge connection port 15a-1 and the sewage discharge component 15a are connected in sequence, and the sewage discharge channel of the sewage discharge component 15a is opened to the large particle sewage discharge mode.

[0044] Drive motor b drives the drain valve g to open, and at the same time rotates relative to the flow channel switching cover 2. The drain connection port 15a-1 is offset from the large particle direct discharge flow channel 21 of the flow channel switching cover 2. The backwashing mechanism moves axially upward relative to the filter mechanism to close the water inlet passage of the raw water chamber. The water inlet end 11, the flow channel switching chamber 22, the inner cavity of the filter mechanism, the raw water chamber, the central pipe and the drain component 15a are connected in sequence, and the backwashing and draining mode is entered.

[0045] In this embodiment, the controller h is a PLC controller. The controller h is equipped with a remote wireless communication module for communicating with a remote server and a user terminal. The controller h has a processor function and integrates at least one MCU. The MCU controls the operation of its electrically connected components. The remote wireless communication module is any one or a combination of two of the following: a 2G module, a 3G module, a 4G module, and a 5G module.

[0046] In this embodiment, the filtration mechanism includes a filter frame 8 and a filter element 9. The filter frame 8 includes a frame body, an inlet end cap 81 (in this embodiment, it is integrally formed with the frame body), and a frame bottom cap 82. The inlet end cap 81 is provided with a raw water inlet channel communicating with the raw water chamber and a backwash frame assembly port. The frame bottom cap 82 is provided with a backwash frame assembly port. The backwash mechanism includes a backwash frame 10. The central tube 3 is inserted into the backwash frame 10 (in this embodiment, it is integrally formed with the backwash frame 10). The backwash frame 10 is divided into an adjustment section and an assembly section. The assembly section is inserted into the frame body and fixed to the frame bottom cap 82. The adjustment section is adapted to the first assembly port 22a. The adjustment section is also provided with a water sealing part 6 with a sealing end face. When the backwashing mechanism moves axially, the raw water inlet channel can be closed or opened through the sealing end face. It also includes an elastic reset member 4, which is located between the skeleton body and the backwashing skeleton 10. Under the pressure difference on both sides of the water sealing part 6, the backwashing mechanism is driven to move axially relative to the filter mechanism. When it moves upward, it closes the raw water inlet channel, and the adjustment section is exposed from the first assembly port 22a, entering the backwashing mode. When it moves downward, it opens the raw water inlet channel, and the adjustment section extends into the first assembly port 22a, entering the filtration mode.

[0047] In this embodiment, there is a pressure difference ΔP on both sides of the backwash opening cover 5. When ΔP ≥ 0 and the force corresponding to ΔP is greater than the reaction force of the elastic reset member 4, the elastic reset member 4 is stretched or compressed, and the backwash mechanism moves upward axially against the direction of sewage flow. When the force corresponding to ΔP is less than the reaction force of the elastic reset member 4, the elastic reset member 4 is reset, and the backwash mechanism moves downward axially in the direction of sewage flow. The pressure difference ΔP is adjusted by opening and closing the sewage discharge channel of the sewage discharge member 15a.

[0048] In this embodiment, the filter frame 8 is a filter mesh frame, and the filter element 9 is a filter mesh or PP cotton; or the filter frame 8 is a stacked frame, and the filter element 9 is a stacked filter.

[0049] In this embodiment, the tail end of the stacked plate skeleton is provided with a stacked plate adjusting component f, which is used to adjust the tightness of the stacked plates. In this embodiment, the backwash opening cover 5 and the stacked plate adjusting component f are implemented by the same component, that is, the same component realizes the functions of backwash opening and stacked plate adjustment; the stacked plate adjusting component f (backwash opening cover 5) is fixedly connected to the end of the assembly section of the backwash skeleton 10, and is provided with a channel in the circumference that can communicate with the central pipe 3.

[0050] In this embodiment, the top of the filter bottle is provided with a drive port, and the drive port is rotatably and sealed to a drive component e. The inner end of the drive component is fixed in the circumferential direction to the disc adjustment component.

[0051] In this embodiment, the flow channel switching cover 2 is integrally molded from an inert material, which is rubber or plastic, or at least the side in contact with water is coated with an inert material, which is plastic, rubber, or ceramic; the inlet end 11, outlet end 12, and assembly end 13 are provided with isolation bushings, which are made of inert material and include an inlet end isolation bushing, an outlet end isolation bushing, and an assembly end isolation bushing, integrally injection molded from plastic or rubber material; or the isolation bushing is coated with an inert material, which is plastic, rubber, or ceramic, at least the side in contact with water.

[0052] In this embodiment, the drive motor b is vertically mounted on the motor base, and the drive shaft of the drive motor is connected to the drive end of the second gear c. When the second gear c opens the drain valve g, it indirectly drives the first gear d to rotate, thereby driving the drain component 15a to rotate.

[0053] In this embodiment, a vortex flow channel assembly a is also fitted outside the filter mechanism, including a vortex flow channel seat and several blades arranged circumferentially around the vortex flow channel seat, with the blades arranged at an angle.

[0054] In this embodiment, a limiting member is provided between the tail end of the stacked plate skeleton and the stacked plate adjusting member f. When rotated in one direction, the tightness of the stacked plates can be adjusted. When rotated in the opposite direction, the stacked plate skeleton can be driven to rotate and scrape the impurities attached to the inner wall of the filter bottle.

[0055] The beneficial effects of this utility model are: This utility model realizes the setting of water inlet end, water outlet end, upward assembly end and sewage discharge end of the machine head, and also sets a flow channel switching cover, that is, the function of the drain ball valve originally set at the lower end of the filter bottle is transferred to the machine head, which effectively optimizes and adjusts the traditional machine head structure. During filtration, raw water flows sequentially from the inlet end into the inlet channel and raw water chamber of the filter mechanism. After filtration, it flows out through the flow channel switching chamber, the outlet channel, and the outlet end. Large particles of impurities accumulate around the inlet end and the flow channel switching cover, and can be directly discharged through the large particle direct discharge channel. The drain component rotates relative to the flow channel switching cover until the inlet end, the large particle direct discharge channel, the drain connection port, and the drain component are sequentially connected, and the outlet channel is disconnected from the outlet end. The drain channel of the drain component is open in the large particle discharge mode. In the backwashing mode, the drain channel of the drain component is open, and it rotates relative to the flow channel switching cover. The drain connection port is misaligned with the large particle direct discharge channel of the flow channel switching cover. The backwashing mechanism moves axially upward relative to the filter mechanism to close the inlet passage of the raw water chamber. The inlet end, the flow channel switching chamber, the inner cavity of the filter mechanism, the raw water chamber, the central pipe, and the drain component are sequentially connected. The structure is more optimized, making it easier to match installation occasions and providing multiple drain channels to meet different application modes. Set up a controller to achieve automated control; set up the controller with remote communication function to achieve remote management and control.

[0056] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A fully automatic bottom-controlled backwashing filter capable of controlling large particle discharge and valve closure, comprising a controller (h), a head assembly (1), a filter bottle (7), and a filtration and backwashing mechanism. The head assembly (1) has an inlet (11), an outlet (12), an upward-facing assembly end (13), a head cavity (14), and a discharge end (15). The filter bottle (7) is fixedly fitted to the assembly end (13). The filtration and backwashing mechanism is located inside the filter bottle (7). The filtration and backwashing mechanism includes a coaxially arranged filtration mechanism and a backwashing mechanism. The cavity between the filtration mechanism and the filter bottle (7) forms a raw water cavity. The discharge end (15) is rotatably equipped with a discharge component (15a). The filter is characterized by: The machine head cavity (14) is provided with a flow channel switching cover (2), the flow channel switching cover (2) is provided with a flow channel switching cavity (22), the flow channel switching cavity (22) is provided with a first assembly port (22a), a second assembly port (22b), a water outlet channel (22c) and a large particle direct discharge channel (21), the flow channel switching cavity (22) is adapted to the end of the backwashing mechanism through the first assembly port (22a) and is axially slidably sealed, and is connected to the sewage discharge component (15a) through the second assembly port (22b), the backwashing mechanism is provided with a central pipe (3), the central pipe (3) is connected to the sewage discharge channel of the sewage discharge component (15a), and the side wall of the sewage discharge component (15a) is provided with a sewage discharge connection port (15a-1). The sewage discharge component (15a) is equipped with a sewage discharge valve (g), which is an electric sewage discharge valve or a manual-electric integrated sewage discharge valve. The sewage discharge component (15a) is fixedly provided with a first gear (d), and the sewage discharge valve (g) is provided with a second gear (c). The first gear (d) and the second gear (c) mesh with each other. The component also includes a drive motor (b), and the drive shaft of the drive motor (b) is connected to the drive end of the first gear (d) or the second gear (c). The drive motor (b) is electrically connected to the controller (h); In the initial state, the drain valve (g) is closed, the drain connection port (15a-1) is offset from the large particle direct discharge channel (21) of the flow channel switching cover (2), and then disconnected from the water inlet (11). The water inlet (11) is connected to the original water chamber, and the inner cavity of the filter mechanism, the flow channel switching chamber (22), the water outlet channel (22c) are connected to the water outlet (12) in sequence, and the filter mode is in operation. The drive motor (b) drives the sewage discharge component (15a) to rotate relative to the flow channel switching cover (2) until the water inlet (11), the large particle direct discharge channel (21), the sewage discharge connection port (15a-1) and the sewage discharge component (15a) are connected in sequence, and the sewage discharge channel of the sewage discharge component (15a) is opened to the large particle sewage discharge mode. The drive motor (b) drives the drain valve (g) to open, and at the same time rotates relative to the flow channel switching cover (2). The drain connection port (15a-1) is offset from the large particle direct discharge flow channel (21) of the flow channel switching cover (2). The backwashing mechanism moves axially upward relative to the filter mechanism to close the water inlet passage of the raw water chamber. The water inlet end (11), the flow channel switching chamber (22), the inner cavity of the filter mechanism, the raw water chamber, the central pipe (3) and the drain component (15a) are connected in sequence, and the backwashing and draining mode is entered.

2. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure as described in claim 1, characterized in that: The controller (h) is a PLC controller. The controller (h) is equipped with a remote wireless communication module for communicating with remote servers and user terminals. The controller (h) has processor functions and integrates at least one MCU. The MCU controls the operation of its electrically connected components. The remote wireless communication module is any one or a combination of two of the following: 2G module, 3G module, 4G module and 5G module.

3. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure as described in claim 1 or 2, characterized in that: The filtration mechanism includes a filter frame (8) and a filter element (9). The filter frame (8) includes a frame body, an inlet end cap (81), and a frame bottom cap (82). The inlet end cap (81) is provided with a raw water inlet channel communicating with the raw water chamber and a backwash frame assembly port. The frame bottom cap (82) is provided with a backwash frame assembly port. The backwash mechanism includes a backwash frame (10). A central pipe (3) is inserted into the backwash frame (10). The backwash frame (10) is divided into an adjustment section and an assembly section. The assembly section is inserted into the frame body and fixed to the frame bottom cap (82). The adjustment section is adapted to the first assembly port (22a). The adjustment section is also provided with a sealing end face. Part (6) can close or open the raw water inlet channel through the sealing end face when the backwashing mechanism moves axially; it also includes an elastic reset member (4), which is located between the skeleton body and the backwashing skeleton (10). The assembly section of the backwashing skeleton (10) is fixedly connected to a backwashing opening cover (5). Under the pressure difference on both sides of the backwashing opening cover (5), the backwashing mechanism is driven to move axially relative to the filter mechanism; when it moves upward, it closes the raw water inlet channel, and the adjustment section is exposed from the first assembly port (22a) to enter the backwashing mode; when it moves downward, it opens the raw water inlet channel, and the adjustment section extends into the first assembly port (22a) to enter the filter mode.

4. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure as described in claim 3, characterized in that: There is a pressure difference ΔP on both sides of the backwash opening cover (5). When ΔP≥0 and the force corresponding to ΔP is greater than the reaction force of the elastic reset member (4), the elastic reset member (4) is stretched or compressed, and the backwash mechanism moves upward in the opposite direction of the sewage flow. When the force corresponding to ΔP is less than the reaction force of the elastic reset member (4), the elastic reset member (4) is reset, and the backwash mechanism moves downward in the direction of the sewage flow. The pressure difference ΔP is adjusted by opening and closing the sewage discharge channel of the sewage discharge member (15a).

5. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure as described in claim 3, characterized in that: The filter frame (8) is a filter mesh frame, and the filter element (9) is a filter mesh or PP cotton; or the filter frame (8) is a stacked frame, and the filter element (9) is a filter stack.

6. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure as described in claim 5, characterized in that: The tail end of the stacked frame is provided with a stacking adjustment component (f) for adjusting the tightness of the stacked pieces.

7. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure as described in claim 5, characterized in that: The filter bottle is provided with a drive port at the top, and a drive component (e) is rotatably and sealed to the drive port. The inner end of the drive component (e) is fixed to the disc adjustment component (f) in the circumferential direction.

8. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure according to claim 1 or 2, characterized in that: The flow channel switching cover (2) is integrally molded with an inert material, which is rubber or plastic, or at least the side in contact with water is coated with an inert material, which is plastic, rubber or ceramic; the inlet end (11), outlet end (12) and assembly end (13) are provided with isolation bushings, which are made of inert material, including an inlet end isolation bushing, an outlet end isolation bushing and an assembly end isolation bushing, which are integrally injection molded with plastic or rubber material; or the isolation bushing is coated with an inert material on at least the side in contact with water, which is plastic, rubber or ceramic.

9. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure according to claim 1, characterized in that: The drive motor (b) is vertically mounted on the motor base. The drive shaft of the drive motor (b) is connected to the drive end of the second gear (c). When the second gear (c) opens the drain valve (g), it indirectly drives the first gear (d) to rotate, thereby driving the drain component (15a) to rotate.

10. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure according to claim 1 or 2, characterized in that: The filter mechanism is further fitted with a vortex flow channel assembly (a), which includes a vortex flow channel seat and several blades arranged circumferentially around the vortex flow channel seat, with the blades arranged at an angle.

11. The inverted filter with fully automatic bottom-controlled backwashing and the ability to control large particle discharge and valve closure according to claim 6, characterized in that: A limiting member is provided between the tail end of the stacked plate skeleton and the stacked plate adjusting member (f). When rotated in one direction, it can adjust the tightness of the stacked plates. When rotated in the opposite direction, it can drive the stacked plate skeleton to rotate and scrape the impurities attached to the inner wall of the filter bottle.

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