A self-cleaning doctor blade filter

Abstract

The utility model provides a kind of self-cleaning type doctor blade filter, it is related to the field of sewage treatment, including the hollow cylindrical shell of axial horizontal and the support seat connected in shell lateral wall;Rotary column is provided in the shell inside along its axial direction, and outside is provided with docking mechanism, horizontal shift mechanism and push ash mechanism;Filtering assembly and first scraper mechanism are further provided in the shell inside, and filtering assembly includes filter plate with filter hole being arranged on plate face, and first scraper mechanism realizes the cleaning of the plate face of filtering assembly under the action of SMA spring;Push ash mechanism includes the plate being arranged in the shell inside, and the plate face is close to the side of filter plate and is provided with with filter hole position corresponding ash rod of filter plate plate face, and the cleaning of filter hole is completed by driving ash rod to extend into or exit filter hole;The filter disclosed in the utility model can automatically clean the plate face and filter hole of its internal filter plate without disassembly, not only convenient to clean, and manpower is not wasted.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a self-cleaning scraper filter. Background Technology

[0002] Wastewater is frequently generated in social life and factory production. Wastewater purification is not only necessary for environmental protection but also improves water resource utilization. Existing technologies primarily utilize physical, chemical, biological, or combined methods for wastewater purification. For example, patent CN108569828A discloses a wastewater purification system comprising a first adsorption tank, a second adsorption tank, and a purification tank connected in sequence. The first adsorption tank contains a densely packed array of adsorption rods, each rod comprising a cylindrical core with multiple threads. A first adsorption layer and a second adsorption layer are sequentially arranged around the core. This system enhances the adsorption capacity for wastewater through a unique adsorption structure, achieving wastewater purification through physical methods. Another example is the wastewater metal purifying agent disclosed in patent CN107973384A, which has a core-shell structure and can rapidly complex heavy metal ions in wastewater, causing them to quickly aggregate and precipitate; this achieves wastewater purification through chemical methods. For example, patent CN105060616B discloses a wastewater purification system for treating wastewater generated during the production of 2-chloronicotinic acid and 2-thiophene ethanol. The system includes a wastewater pretreatment device, a nutrient dissolution device, a wastewater hydrolysis and purification device, and a wastewater separation device for removing sludge and impurities. It achieves a complete wastewater process by combining chemical and physical methods.

[0003] Existing wastewater treatment methods, including physical, chemical, biological, or combined methods, employ filters during wastewater recycling or discharge. Over time, impurities from the wastewater may adhere to the filter plates inside the filter, clogging the filter pores and requiring timely cleaning. Currently, to prevent impurity buildup, filters need to be periodically shut down for disassembly, cleaning, and maintenance. This cleaning process is inconvenient, wastes labor, and increases production costs. Utility Model Content

[0004] The purpose of this invention is to provide a self-cleaning scraper filter that can self-clean after use without disassembly and cleaning, making it convenient to use and saving labor.

[0005] To achieve the above objectives, the present invention proposes the following technical solution: a self-cleaning scraper filter, comprising a hollow cylindrical shell and a support base connected to the side wall of the shell, wherein the shell is mounted on a working platform via the support base, and the axial direction of the shell is horizontal;

[0006] A rotating column is arranged inside the housing along its axial direction, and a ash-pushing mechanism is arranged outside the housing; the two ends of the rotating column abut against opposite sides of the housing, and one end of the rotating column is connected to the output shaft of a first motor arranged on the outer side of the housing;

[0007] The housing is also equipped with a filter assembly and a first scraper mechanism;

[0008] The filter assembly includes four cross plates and a filter plate; the cross plates are uniformly fixed on the side wall of the rotating column, and the four cross plates form a cross structure on the rotating column. The outer diameter of the cross structure is adapted to the inner diameter of the housing; any two cross plates are fixedly connected by fan-shaped plates, and each fan-shaped plate has a mounting hole on its surface; the filter plate is embedded in the mounting hole on the fan-shaped plate, and its surface has a plurality of filter holes; the four fan-shaped plates divide the internal space of the housing into two independent areas, and the two independent areas are connected through the filter holes on the filter plate;

[0009] The internal space of the housing is divided into two independent areas by a fan-shaped plate: a first space and a second space. The first space is located near the first motor, and the second space is located near the ash-pushing mechanism.

[0010] The first scraper mechanism includes a first drive mechanism, a rotating shaft assembly, a first spring, a push rod, and a scraper. The first drive mechanism is disposed on the same side of the first motor mounting surface, and the rotating shaft assembly, the first spring, the push rod, and the scraper are all disposed within the first space. The rotating shaft assembly includes a rotating shaft and a slider movably disposed on the rotating shaft. The rotating shaft is connected to the output end of the first drive mechanism. One end of the push rod is fixed to the slider, and the other end is connected through to the scraper. The first spring is an SMA spring, which is sleeved on the push rod. One end of the SMA spring is connected to the slider, and the other end is connected to the scraper. The SMA spring is electrically connected to the power supply of the first drive mechanism. The scraper surface is perpendicular to the filter plate surface. When the first drive mechanism is activated, the rotating shaft rotates, driving the slider, the push rod, and the scraper to move on the rotating shaft, causing the scraper to move closer to or further away from the filter plate surface.

[0011] The ash-pushing mechanism is disposed on a circular side of the housing opposite to the first motor mounting surface. The ash-pushing mechanism includes a second drive mechanism, a slide bar, and a through plate.

[0012] Define the circular side where the first motor is located as the first side and the circular side where the ash-pushing mechanism is located as the second side. Then, the second drive mechanism is set on the second side. One end of the slide rod is sealed and passes through the second space, and the other end is connected to the output end of the second drive mechanism. The through plate is set at the end of the slide rod located in the second space. Its plate surface is parallel to and corresponds to the filter plate surface. Several ash-pushing rods are set on its plate surface near the filter plate side. The ash-pushing rods correspond one-to-one with the filter holes on the filter plate surface. When the second drive mechanism is started, it drives the slide rod to extend into or retract into the housing, thereby driving the ash-pushing rods to extend into or retract into the filter holes.

[0013] When the first motor starts, the first drive mechanism and the second drive mechanism are turned off, and the rotating column drives the filter assembly to rotate to filter wastewater; when the first motor is turned off, the first drive mechanism and the second drive mechanism are started, and the scraper of the first scraper mechanism and the top ash rod of the ash pushing mechanism clean the filter plate of the filter assembly of impurities.

[0014] Furthermore, a second scraper mechanism is also provided inside the housing, which includes a third drive mechanism, a central shaft, and four push plates;

[0015] The central shaft is coaxially disposed inside the rotating column, with its end near the first side flush with the rotating column and its end near the second side sealingly penetrating the second side; the end of the central shaft near the first side is defined as the first end and the end near the second side is defined as the second end, then the first end is coaxially connected to a second gear, and the second end is connected to the output end of the third drive mechanism disposed in the middle of the second side;

[0016] The second gear has two second racks meshing on its surface, and the two second racks are placed in an alternating manner; the rotating column is configured with a cavity notch at the position corresponding to the second gear, and each end of any second rack passes through the cavity notch along its length and is connected to the push plate; the push plate surface is perpendicular to the cross plate surface, and the two push plates located on the same second rack have opposite extension directions;

[0017] The third drive mechanism is activated, which drives the central shaft and the second gear to move and rotate to the second side. After rotation, it drives the second rack and the push plate to move, so that the push plate first abuts against the surface of the cross plate and then moves on the plate surface, thereby cleaning the impurities on the cross plate.

[0018] Furthermore, a first thread is provided on one end of the shaft near the second side;

[0019] The third drive mechanism includes a drive unit and a docking unit, and the docking unit includes a second mounting bracket, a baffle, a locking pin, a second spring, and a rotating cylinder;

[0020] The second mounting bracket is disposed in the middle of the second side of the outer side of the housing, and the driving part is disposed on the second mounting bracket; the locking pin, the second spring and the baffle are sequentially fitted onto the rod body with the first thread that protrudes from the outer side of the housing on the central shaft, the locking pin is fixed to the rod body, and the baffle is adapted to the size of the rod body; one end of the second spring abuts against the locking pin and the other end abuts against the baffle, and the second spring is in an uncompressed state;

[0021] The rotating drum is fitted on the outside of the baffle, and one end of it near the second side is rotatably connected to the drive unit; a limiting hole is provided on the side of the rotating drum away from the baffle, and the wall of the limiting hole is provided with a second thread adapted to the central shaft rod body; and a slot is provided on the side of the rotating drum near the locking post, and the shape of the slot is adapted to the shape of the locking post.

[0022] When the drive unit rotates, it causes the rotating cylinder to abut against the baffle and move along the second side along the axis of the central shaft until the baffle squeezes the second spring and the groove of the rotating cylinder engages with the locking post, thereby causing the central shaft to move to the second side and rotate.

[0023] Furthermore, the self-cleaning scraper filter also includes a transverse movement mechanism, which includes a first mounting bracket, a push plate, a second motor, and a first gear;

[0024] The first mounting bracket is disposed on the second side and is configured as a cavity structure with a Z-shape; the second motor is disposed outside the cavity structure, and its output shaft extends into the cavity structure and is connected to the first gear disposed inside the cavity structure.

[0025] The folding and pushing plate is slidably disposed within the cavity structure, with both ends extending to the outer side of the cavity structure, one end extending to the outer side of the slide rod of the ash pushing mechanism and the other end extending to the lower part of the drive unit; the folding and pushing plate has teeth on the side near the first gear, and the first gear meshes with the teeth; a first rack is provided on the plate surface of the folding and pushing plate extending to the lower part of the drive unit, and the drive unit is configured as a third gear, which meshes with the first rack; the side of the folding and pushing plate near the slide rod is configured as an inclined plate, and the distance between the inclined plate and the second side gradually decreases from its end away from the second mounting bracket to its end near the second mounting bracket; the inclined plate constitutes the second drive mechanism;

[0026] When the first gear rotates, it drives the push plate to move closer to the ash pushing mechanism. The push plate pushes the slide rod to extend into or retract into the housing. When the push plate moves, the first rack on it drives the third gear to rotate, which in turn drives the central shaft.

[0027] Furthermore, the length of the cavity notch along the axial direction of the rotating column is at least such that the central shaft moves toward the second side until the push plate abuts against the surface of the cross plate.

[0028] Furthermore, the ash-pushing mechanism also includes a third spring, which is sleeved on the portion of the slide rod located outside the housing, with one end connected to the slide rod and the other end abutting against the second side; the third spring is used to limit the length of the slide rod extending into the second space.

[0029] Furthermore, a water inlet pipe is provided at the bottom of the first side of the housing, and a drain pipe is provided at the bottom of the arc-shaped sidewall of the housing.

[0030] Furthermore, the support base includes two inverted T-shaped support plates, which are arranged in a figure-eight shape at the bottom of the arc-shaped sidewall of the housing.

[0031] Furthermore, the second mounting bracket is configured as an L-shaped plate; the L-shaped plate includes a horizontal plate vertically connected to the second side and a vertical plate disposed at the end of the horizontal plate away from the second side, and the driving part is disposed on the vertical plate.

[0032] Furthermore, the first drive mechanism is configured as a third motor.

[0033] As can be seen from the above technical solutions, the technical solutions of this utility model have achieved the following beneficial effects:

[0034] This utility model discloses a self-cleaning scraper filter, comprising an axially horizontal hollow cylindrical shell and a support base connected to the side wall of the shell; a rotating column is arranged axially inside the shell, and a docking mechanism, a transverse movement mechanism, and a dust pushing mechanism are arranged outside the shell; a filter assembly and a first scraper mechanism are also arranged inside the shell, the filter assembly includes a filter plate with several filter holes on its surface, and the first scraper mechanism cleans the surface of the filter assembly under the drive of an SMA spring; the dust pushing mechanism includes a second drive mechanism, a sliding rod, and a through plate, with a sensor arranged inside the shell, and several dust-pushing rods corresponding to the positions of the filter holes on the filter plate surface are arranged on the side of its plate near the filter plate, and the dust-pushing rods are driven to extend into or retract from the filter holes to complete the cleaning of the filter holes; compared with the existing technology of periodic disassembly and cleaning, the filter disclosed in this utility model can automatically clean the surface of the internal filter plate and filter holes without disassembly, which is not only convenient to clean, but also eliminates the need for manpower.

[0035] Meanwhile, the self-cleaning scraper filter disclosed in this utility model further improves the cleaning quality of the filter by setting a second scraper mechanism in cooperation with the rotating column to self-clean the cross plate surface of the filter plate installed inside the housing, thus preventing the accumulation of filtered impurities. Compared with the prior art, the filter of this utility model not only does not require disassembly, but also, based on its internal first / second space structure, can filter wastewater without stopping during wastewater treatment under a pre-set program. This not only reduces labor costs and achieves a self-cleaning effect, but also greatly improves the wastewater treatment efficiency.

[0036] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

[0037] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0038] The accompanying drawings are not drawn to scale according to a true reference numeral. In the drawings, each identical or nearly identical component shown in the various figures can be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0039] Figure 1 This is a perspective view of the overall front of the filter disclosed in the embodiment;

[0040] Figure 2 This is a perspective view of the overall rear side of the filter disclosed in the embodiment;

[0041] Figure 3 This is a perspective view of the filter docking section and the second scraper mechanism as disclosed in the embodiment;

[0042] Figure 4 This is a perspective view of the filter transverse movement mechanism and ash pushing mechanism in cooperation as disclosed in the embodiment;

[0043] Figure 5 This is a perspective view of the first scraper mechanism of the filter disclosed in the embodiment;

[0044] Figure 6 This is a perspective view of the filter assembly disclosed in the embodiment;

[0045] Figure 7This is a perspective view of the second scraper mechanism of the filter disclosed in the embodiment;

[0046] Figure 8 A perspective view of the filter assembly disclosed in the embodiment being installed inside the housing;

[0047] Figure 9 Filters disclosed in the embodiments Figure 6 Enlarged view of point A in the middle.

[0048] The specific meanings of each mark in the diagram are as follows:

[0049] 1-Housing; 2-Rotating column; 3-First motor; 4-Transverse mechanism; 401-First mounting bracket; 402-Folding push plate; 403-Second motor; 404-First gear; 405-First rack; 5-First scraper mechanism; 501-Top rod; 502-Scraper; 503-First spring; 504-Third motor; 505-Slider; 6-Filter assembly; 601-Cross plate; 602-Fan-shaped plate; 603-Filter plate; 7-Second scraper mechanism; 701-Central shaft; 702-Second gear; 703-Second rack; 704-Push plate; 8-Connecting part; 801-Second mounting bracket; 802-Baffle; 803-Clamping post; 804-Second spring; 805-Rotating drum; 806-Third gear; 807-Protrusion; 9-Pushing mechanism; 901-Slide rod; 902-Through plate; 903-Third spring. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0051] The terms "first," "second," and similar terms used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features—wholes—steps—operations—elements and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features—wholes—steps—operations—elements—components and / or their collections. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0052] Existing wastewater filters require periodic shutdowns for disassembly, cleaning, and maintenance to prevent impurity buildup. This cleaning process is labor-intensive and increases production costs. Therefore, this invention aims to propose a self-cleaning scraper filter that can self-clean its internal structure without disassembly, reducing labor costs and improving cleaning efficiency.

[0053] Combination Figure 1-9 As shown, this embodiment provides a self-cleaning scraper filter, including a hollow cylindrical shell 1 and a support base connected to the side wall of the shell 1. The shell 1 is mounted on a working platform via the support base, and the axial direction of the shell 1 is horizontal. As shown in the figure, the support base includes two inverted T-shaped support plates, which are arranged in a figure-eight shape at the bottom of the arc-shaped side wall of the shell 1.

[0054] A rotating column 2 is arranged axially inside the housing 1, and a ash-pushing mechanism 9 is arranged outside the housing 1. The two ends of the rotating column 2 abut against opposite sides of the housing 1, and one end of the rotating column 2 is connected to the output shaft of a first motor 3 arranged on the outer side of the housing 1. In addition, a water inlet pipe is arranged at the bottom of the first side of the housing 1, and a drain pipe is arranged at the bottom of the arc-shaped sidewall of the housing 1.

[0055] As shown in the figure, a filter assembly 6 and a first scraper mechanism 5 are also provided inside the housing 1;

[0056] The filter assembly 6 includes four cross plates 601 and a filter plate 603. The cross plates 601 are uniformly fixed on the side wall of the rotating column 2, and the four cross plates 601 form a cross structure on the rotating column 2. The outer diameter of the cross structure is adapted to the inner diameter of the housing 1. Any two cross plates 601 are fixedly connected by a fan-shaped plate 602, and any fan-shaped plate 602 has a mounting hole on its surface. The filter plate 603 is embedded in the mounting hole on the fan-shaped plate 602, and its surface has a plurality of filter holes. The four fan-shaped plates 602 divide the internal space of the housing into two independent areas, and the two independent areas are connected through the filter holes on the filter plate 603.

[0057] The fan-shaped plate 602 divides the internal space of the housing 1 into two independent areas: a first space and a second space. The first space is located near the first motor 3, and the second space is located near the ash pushing mechanism 9. The drain pipe connects to the first space, and the water inlet pipe connects to the second space.

[0058] The first scraper mechanism 5 includes a first drive mechanism, a rotating shaft assembly, a first spring 503, a push rod 501, and a scraper 502. The first drive mechanism is disposed on the same side of the mounting surface of the first motor 3. The rotating shaft assembly, the first spring 503, the push rod 501, and the scraper 502 are all disposed within the first space. The rotating shaft assembly includes a rotating shaft and a slider 505 movably disposed on the rotating shaft. The rotating shaft is connected to the output end of the first drive mechanism. One end of the push rod 501 is fixed to the slider 505, and the other end is connected through to the scraper 502. The first spring 503 is an SMA spring, and the SMA spring is sleeved on the top... On rod 501, one end is connected to slider 505 and the other end is connected to scraper 502, and the SMA spring is electrically connected to the power supply of the first drive mechanism; the surface of scraper 502 is perpendicular to the surface of filter plate 603; when the first drive mechanism is activated, the rotating shaft rotates, driving slider 505, its top rod 501, and scraper 502 to move on the rotating shaft, causing scraper 502 to move closer to or further away from the surface of filter plate; then, the SMA spring performs extension and retraction under electric drive, driving scraper 502 to reciprocate along top rod 501 on the surface of filter plate 603, scraping off impurities from the surface of filter plate 603. In this embodiment, the first drive mechanism is configured as a third motor 504. The movement of slider 505 on the rotating shaft is mainly to prevent scraper 502 from contacting other structures and affecting the normal operation of filter assembly 6.

[0059] The ash pushing mechanism 9 is disposed on a circular side surface of the housing 1 opposite to the mounting surface of the first motor 3. The ash pushing mechanism 9 includes a second drive mechanism, a slide bar 901 and a through plate 902.

[0060] Define the circular side where the first motor 3 is located as the first side and the circular side where the ash-pushing mechanism 9 is located as the second side. The second drive mechanism is then positioned on the second side. One end of the slide rod 901 is sealed and passes through the second space, while the other end is connected to the output end of the second drive mechanism. The through plate 902 is located at the end of the slide rod 901 within the second space. Its surface is parallel to and corresponds to the surface of the filter plate 603, and several ash-pushing rods are provided on its surface near the filter plate 603. The ash-pushing rods interact with the filter plate 603 surface. The holes are positioned one-to-one; when the second drive mechanism is activated, it drives the slide rod 901 to extend into or retract into the housing 1, thereby driving the top ash rod to extend into or retract into the filter hole; when the first motor 3 is activated, the first drive mechanism and the second drive mechanism are deactivated, and the rotating column 2 drives the filter assembly 6 to rotate for wastewater filtration; when the first motor 3 is deactivated, the first drive mechanism and the second drive mechanism are activated, and the scraper 502 of the first scraper mechanism 5 and the top ash rod of the ash pushing mechanism 9 clean impurities from the filter plate 603 of the filter assembly 6.

[0061] like Figure 3 As shown, the self-cleaning scraper filter housing 1 is also provided with a second scraper mechanism 7. The second scraper mechanism 7 includes a third drive mechanism, a central shaft 701, and four push plates 704. The central shaft 701 is coaxially arranged inside the rotating column 2, with its end near the first side flush with the rotating column 2 and its end near the second side sealingly penetrating the second side. The end of the central shaft 701 near the first side is defined as the first end and the end near the second side is defined as the second end. The first end is coaxially connected to a second gear 702, and the second end is connected to the output end of the third drive mechanism located in the middle of the second side.

[0062] The second gear 702 has two second racks 703 meshing on its surface, and the two second racks 703 are staggered. The rotating column 2 is configured with a cavity notch corresponding to the second gear 702. Both ends of any second rack 703 pass through the cavity notch along its length and are connected to the push plate 704. The surface of the push plate 704 is perpendicular to the surface of the cross plate 601, and the two push plates 704 located on the same second rack 703 extend in opposite directions to clean different side surfaces of the cross plate 601. The third drive mechanism is activated, which drives the central shaft 701 and the second gear 702 to move and rotate towards the second side. After rotation, it drives the second rack 703 and the push plate 704 to move, so that the push plate 704 first abuts against the surface of the cross plate 601 and then moves on the surface, thereby cleaning impurities on the cross plate 601. The central shaft 701 moves to the second side first mainly to prevent the push plate 704 from touching other structures and affecting the normal operation of the filter assembly 6.

[0063] Specific combination Figure 3 and Figure 9 As shown, the central shaft 701 has a first thread on one end of the shaft near the second side; the third drive mechanism includes a drive part and a docking part 8, the docking part 8 includes a second mounting bracket 801, a baffle 802, a locking pin 803, a second spring 804, and a rotating cylinder 805; during installation, the second mounting bracket 801 is located in the middle of the second side of the outer side of the housing 1, and the drive part is located on the second mounting bracket 801; the locking pin 803, the second spring 804, and the baffle 802 are sequentially fitted onto the central shaft 701 protruding from the outer side of the housing 1 and having a first thread, the locking pin 803 is fixed to the shaft, and the baffle 802 is adapted to the size of the shaft; one end of the second spring 804 abuts against the locking pin 803 and the other end abuts against the baffle 802, and the second spring 804... 4. In a non-compressed state; the rotating drum 805 is fitted on the outside of the baffle 802, and its end near the second side is rotatably connected to the driving unit; a limiting hole is provided on the side of the rotating drum 805 away from the baffle 802, and the wall of the limiting hole is provided with a second thread adapted to the rod body of the central shaft 701, and a slot is provided on the end of the rotating drum 805 near the locking post 803, the shape of the slot being adapted to the shape of the locking post 803; when the driving unit rotates, it drives the rotating drum 805 to abut against the baffle 802 and move along the axis of the central shaft 701 to the second side until the baffle 802 squeezes the second spring 804 and the slot of the rotating drum 805 engages with the locking post, thereby causing the central shaft 701 to move to the second side and rotate, thereby driving the second scraper mechanism 7 to clean impurities.

[0064] Naturally, to facilitate the movement of the central shaft 701, the length of the cavity notch along the axial direction of the rotating column 2 is at least sufficient to allow the central shaft 701 to move towards the second side until the push plate 704 abuts against the surface of the cross plate 601. Furthermore, in this embodiment, the second mounting bracket 801 is configured as an L-shaped plate; the L-shaped plate includes a horizontal plate perpendicularly connected to the second side and a vertical plate disposed at the end of the horizontal plate away from the second side, with the driving unit disposed on the vertical plate.

[0065] Further integration Figure 2 and Figure 4 As shown, the self-cleaning scraper filter further includes a transverse movement mechanism 4, which includes a first mounting bracket 401, a push plate 402, a second motor 403, and a first gear 404. During installation, the first mounting bracket 401 is disposed on the second side and is configured as a U-shaped cavity structure. The second motor 403 is disposed outside the cavity structure, with its output shaft extending into the cavity structure and connected to the first gear 404 disposed inside the cavity structure. The push plate 402 is slidably disposed within the cavity structure, with both ends extending to the outside of the cavity structure, and one end extending to the slide rod 90 of the dust pushing mechanism 9. 1. The outer side and the other end extend to the lower part of the drive unit; the push plate 402 is provided with gear teeth on the side near the first gear 404, and the first gear 404 meshes with the gear teeth; the push plate 402 extends to the plate surface below the drive unit and is provided with a first rack 405, the drive unit is configured as a third gear 806, and the third gear 806 meshes with the first rack 405; the push plate 402 is configured as an inclined plate on the side near the slide rod 901, and the inclined plate is configured such that the distance between the inclined plate and the second side gradually decreases from the end away from the second mounting bracket 801 to the end near the second mounting bracket 801; the inclined plate constitutes a second drive mechanism;

[0066] During operation, when the first gear 404 rotates, it drives the push plate 402 to move closer to the ash pushing mechanism 9. The push plate 402 pushes the slide bar 901 to extend into or retract into the housing 1. When the push plate 402 moves, the first rack 405 on it drives the third gear 806 to rotate, which in turn drives the central shaft 701.

[0067] Further integration Figure 9 As shown, a protrusion 807 is provided on the side of the third gear 806 near the rotating cylinder 805. The rotating cylinder 805 is provided with a groove at the corresponding position of the protrusion 807. The rotating cylinder 805 is fixed to the third gear 806 by fitting the groove with the protrusion 806.

[0068] In addition, to facilitate the automatic reset of the ash-pushing mechanism 9, the ash-pushing mechanism 9 also includes a third spring 903. The third spring 903 is sleeved on the portion of the slide rod 901 located outside the housing 1, with one end connected to the slide rod 903 and the other end abutting against the second side surface. The third spring 903 is used to limit the length of the slide rod 901 extending into the second space. For example, a stop is fixed at the position where the third spring 903 is fixed on the slide rod 903, and the third spring 903 is fixed to the stop to achieve fixation with the slide rod 903.

[0069] This invention utilizes a multi-group filter plate 603 of a filter assembly 6 to circulate and filter wastewater. Wastewater is injected through the inlet pipe, then filtered through the filter plate 603, and finally discharged through the drain pipe. Compared to existing technologies, the self-cleaning scraper filter disclosed in this solution eliminates the need for periodic disassembly of the filter. It can automatically clean the filter plate surface and filter holes inside the filter without disassembly, making cleaning convenient, labor-saving, and easy to use.

[0070] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A self-cleaning scraper filter, characterized in that, It includes a hollow, cylindrical shell and a support base connected to the side wall of the shell. The shell is mounted on a working platform via the support base, and the axial direction of the shell is horizontal. A rotating column is arranged inside the housing along its axial direction, and a ash-pushing mechanism is arranged outside the housing; the two ends of the rotating column abut against opposite sides of the housing, and one end of the rotating column is connected to the output shaft of a first motor arranged on the outer side of the housing; The housing is also equipped with a filter assembly and a first scraper mechanism; The filter assembly includes four cross plates and a filter plate; the cross plates are uniformly fixed on the side wall of the rotating column, and the four cross plates form a cross structure on the rotating column. The outer diameter of the cross structure is adapted to the inner diameter of the housing; any two cross plates are fixedly connected by fan-shaped plates, and each fan-shaped plate has a mounting hole on its surface; the filter plate is embedded in the mounting hole on the fan-shaped plate, and its surface has a plurality of filter holes; the four fan-shaped plates divide the internal space of the housing into two independent areas, and the two independent areas are connected through the filter holes on the filter plate; The internal space of the housing is divided into two independent areas by a fan-shaped plate: a first space and a second space. The first space is located near the first motor, and the second space is located near the ash-pushing mechanism. The first scraper mechanism includes a first drive mechanism, a rotating shaft assembly, a first spring, a push rod, and a scraper. The first drive mechanism is disposed on the same side of the first motor mounting surface, and the rotating shaft assembly, the first spring, the push rod, and the scraper are all disposed within the first space. The rotating shaft assembly includes a rotating shaft and a slider movably disposed on the rotating shaft. The rotating shaft is connected to the output end of the first drive mechanism. One end of the push rod is fixed to the slider, and the other end is connected through to the scraper. The first spring is an SMA spring, which is sleeved on the push rod. One end of the SMA spring is connected to the slider, and the other end is connected to the scraper. The SMA spring is electrically connected to the power supply of the first drive mechanism. The scraper surface is perpendicular to the filter plate surface. When the first drive mechanism is activated, the rotating shaft rotates, driving the slider, the push rod, and the scraper to move on the rotating shaft, causing the scraper to move closer to or further away from the filter plate surface. The ash-pushing mechanism is disposed on a circular side of the housing opposite to the first motor mounting surface. The ash-pushing mechanism includes a second drive mechanism, a slide bar, and a through plate. Define the circular side where the first motor is located as the first side and the circular side where the ash-pushing mechanism is located as the second side. Then, the second drive mechanism is set on the second side. One end of the slide rod is sealed and passes through the second space, and the other end is connected to the output end of the second drive mechanism. The through plate is set at the end of the slide rod located in the second space. Its plate surface is parallel to and corresponds to the filter plate surface. Several ash-pushing rods are set on its plate surface near the filter plate side. The ash-pushing rods correspond one-to-one with the filter holes on the filter plate surface. When the second drive mechanism is started, it drives the slide rod to extend into or retract into the housing, thereby driving the ash-pushing rods to extend into or retract into the filter holes. When the first motor starts, the first drive mechanism and the second drive mechanism are turned off, and the rotating column drives the filter assembly to rotate to filter wastewater; when the first motor is turned off, the first drive mechanism and the second drive mechanism are started, and the scraper of the first scraper mechanism and the top ash rod of the ash pushing mechanism clean the filter plate of the filter assembly of impurities.

2. The self-cleaning scraper filter according to claim 1, characterized in that, The housing is also equipped with a second scraper mechanism, which includes a third drive mechanism, a central shaft, and four push plates. The central shaft is coaxially disposed inside the rotating column, with its end near the first side flush with the rotating column and its end near the second side sealingly penetrating the second side; the end of the central shaft near the first side is defined as the first end and the end near the second side is defined as the second end, then the first end is coaxially connected to a second gear, and the second end is connected to the output end of the third drive mechanism disposed in the middle of the second side; The second gear has two second racks meshing on its surface, and the two second racks are placed in an alternating manner; the rotating column is configured with a cavity notch at the position corresponding to the second gear, and each end of any second rack passes through the cavity notch along its length and is connected to the push plate; the push plate surface is perpendicular to the cross plate surface, and the two push plates located on the same second rack have opposite extension directions; The third drive mechanism is activated, which drives the central shaft and the second gear to move and rotate to the second side. After rotation, it drives the second rack and the push plate to move, so that the push plate first abuts against the surface of the cross plate and then moves on the plate surface, thereby cleaning the impurities on the cross plate.

3. The self-cleaning scraper filter according to claim 2, characterized in that, The central shaft has a first thread on one end of the shaft near the second side. The third drive mechanism includes a drive unit and a docking unit, and the docking unit includes a second mounting bracket, a baffle, a locking pin, a second spring, and a rotating cylinder; The second mounting bracket is disposed in the middle of the second side of the outer side of the housing, and the driving part is disposed on the second mounting bracket; the locking pin, the second spring and the baffle are sequentially fitted onto the rod body with the first thread that protrudes from the outer side of the housing on the central shaft, the locking pin is fixed to the rod body, and the baffle is adapted to the size of the rod body; one end of the second spring abuts against the locking pin and the other end abuts against the baffle, and the second spring is in an uncompressed state; The rotating drum is fitted on the outside of the baffle, and one end of it near the second side is rotatably connected to the drive unit; a limiting hole is provided on the side of the rotating drum away from the baffle, and the wall of the limiting hole is provided with a second thread adapted to the central shaft rod body; and a slot is provided on the side of the rotating drum near the locking post, and the shape of the slot is adapted to the shape of the locking post. When the drive unit rotates, it causes the rotating cylinder to abut against the baffle and move along the second side along the axis of the central shaft until the baffle squeezes the second spring and the groove of the rotating cylinder engages with the locking post, thereby causing the central shaft to move to the second side and rotate.

4. The self-cleaning scraper filter according to claim 3, characterized in that, The self-cleaning scraper filter also includes a transverse movement mechanism, which includes a first mounting bracket, a push plate, a second motor, and a first gear. The first mounting bracket is disposed on the second side and is configured as a cavity structure with a Z-shape; the second motor is disposed outside the cavity structure, and its output shaft extends into the cavity structure and is connected to the first gear disposed inside the cavity structure. The folding and pushing plate is slidably disposed within the cavity structure, with both ends extending to the outer side of the cavity structure, one end extending to the outer side of the slide rod of the ash pushing mechanism and the other end extending to the lower part of the drive unit; the folding and pushing plate has teeth on the side near the first gear, and the first gear meshes with the teeth; a first rack is provided on the plate surface of the folding and pushing plate extending to the lower part of the drive unit, and the drive unit is configured as a third gear, which meshes with the first rack; the side of the folding and pushing plate near the slide rod is configured as an inclined plate, and the distance between the inclined plate and the second side gradually decreases from its end away from the second mounting bracket to its end near the second mounting bracket; the inclined plate constitutes the second drive mechanism; When the first gear rotates, it drives the push plate to move closer to the ash pushing mechanism. The push plate pushes the slide rod to extend into or retract into the housing. When the push plate moves, the first rack on it drives the third gear to rotate, which in turn drives the central shaft.

5. The self-cleaning scraper filter according to claim 2, characterized in that, The length of the cavity notch along the axial direction of the rotating column is at least such that the central shaft moves toward the second side until the push plate abuts against the surface of the cross plate.

6. The self-cleaning scraper filter according to claim 1, characterized in that, The ash-pushing mechanism also includes a third spring, which is sleeved on the portion of the slide rod located outside the housing. One end of the third spring is connected to the slide rod, and the other end abuts against the second side. The third spring is used to limit the length of the slide rod extending into the second space.

7. The self-cleaning scraper filter according to claim 1, characterized in that, A water inlet pipe is provided at the bottom of the first side of the housing, and a drain pipe is provided at the bottom of the arc-shaped sidewall of the housing.

8. The self-cleaning scraper filter according to claim 1, characterized in that, The support base includes two inverted T-shaped support plates, which are arranged in a figure-eight shape at the bottom of the arc-shaped sidewall of the shell.

9. The self-cleaning scraper filter according to claim 3, characterized in that, The second mounting bracket is configured as an L-shaped plate; the L-shaped plate includes a horizontal plate vertically connected to the second side and a vertical plate disposed at the end of the horizontal plate away from the second side, and the driving part is disposed on the vertical plate.

10. The self-cleaning scraper filter according to claim 1, characterized in that, The first drive mechanism is configured as a third motor.

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