A water power station scraping brush type water filter

Abstract

The application relates to the technical field of hydropower stations, in particular to a water power station scraping brush type water filter which comprises a filtering assembly, a cleaning assembly and the like. The filtering assembly comprises a base, a control box arranged at the top end of the base, a water conveying pipe mounted on the side wall of the control box, a secondary filtering pipe arranged on the side wall of the water conveying pipe and a filtering piece arranged on the side wall of the water conveying pipe. The cleaning assembly comprises a flow guide pipe arranged on the side wall of the filtering piece, the diameter of the flow guide pipe is arranged in an upper wide and lower narrow mode, a scraping piece is arranged on the inner wall of the flow guide pipe close to the filtering piece, the scraping piece is connected with the flow guide pipe through a connecting piece, and the combination design of a rotating ring of the connecting piece and a sliding rod realizes accurate adjustment of the contact pressure of a scraping plate and a filtering screen. The self-adaptive pressure control mechanism can automatically adjust according to the actual situation of the filtering screen while ensuring efficient scraping, reduces the abrasion of the filtering screen and prolongs the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of hydropower station technology, and in particular to a scraper-type water filter for hydropower stations. Background Technology

[0002] In the technical water supply systems of modern hydropower stations, efficient water filtration is a crucial element in ensuring the safe and stable operation of the generating units. Traditional water filters, such as rotary filters, generally suffer from problems such as large head loss, unstable operating performance, and a lack of effective clogging monitoring and protection mechanisms, resulting in low reliability and high difficulty in operation and maintenance. Furthermore, these filters often require frequent manual cleaning and maintenance, increasing operating costs, and their filtration efficiency is significantly reduced when faced with specific water quality conditions containing large amounts of sediment, suspended solids, and floating debris (such as leaves and aquatic plants).

[0003] To address these challenges, while various fully automatic water filters have emerged on the market, these devices still have limitations in practical applications, such as incomplete cleaning, poor adaptability to specific contaminants, and wear and maintenance issues during long-term operation. Therefore, developing a new type of water filter that can adapt to different levels of contamination, reduce maintenance needs, and effectively minimize head loss has become an urgent industry requirement. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Given that the aforementioned water filters often require frequent manual cleaning and maintenance, which increases operating costs, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a scraper-type water filter for hydropower stations.

[0007] To solve the above technical problems, the present invention provides the following technical solution: a scraper-type water filter for hydropower stations, comprising a filter assembly, including a base and a control box disposed at the top of the base, wherein a water supply pipe is installed on the side wall of the control box, a secondary filter pipe is disposed on the side wall of the water supply pipe, and a filter element is disposed on the side wall of the water supply pipe.

[0008] The cleaning assembly includes a flow guide tube disposed on the side wall of the filter element. The diameter of the flow guide tube is wider at the top and narrower at the bottom. A scraper is disposed on the inner wall of the flow guide tube near the filter element. The scraper is connected to the flow guide tube through a connector.

[0009] As a preferred embodiment of the hydropower station scraper-type water filter of the present invention, the filter element includes a servo motor disposed on the side wall of the water supply pipe, the output end of the servo motor extends into the interior of the water supply pipe and is equipped with a drive gear, and a filter screen is installed inside the water supply pipe.

[0010] As a preferred embodiment of the hydropower station scraper-type water filter of the present invention, the filter element further includes a reinforcing edge disposed on the circumferential sidewall of the filter screen, the sidewall of the reinforcing edge is equipped with toothed blocks, and the sidewall of the filter screen is equipped with a reinforcing plate, the reinforcing plate being used to provide support for the filter screen.

[0011] As a preferred embodiment of the hydropower station scraper-type water filter of the present invention, the filter element further includes a connecting shaft disposed at the end of the reinforcing plate, a water turbine is installed on the side wall of the connecting shaft, the reinforcing plate is distributed in a circular array with the central axis point of the reinforcing edge, and the connecting shaft is located at the center point of the reinforcing plate.

[0012] As a preferred embodiment of the hydropower station scraper-type water filter of the present invention, the filter element further includes a sewage pipe disposed on the side wall of the water supply pipe, a flow meter disposed on the side wall of the sewage pipe, and a control valve installed on the side wall of the flow meter.

[0013] As a preferred embodiment of the hydropower station scraper filter of the present invention, the scraping component includes a guide groove provided on the side wall of the guide pipe, the bottom end of the guide groove is closed, and the closing plate at the bottom end of the guide groove is arc-shaped, while the top end of the guide groove corresponds to the sewage pipe.

[0014] As a preferred embodiment of the hydropower station scraper filter of the present invention, the scraping component further includes a scraper plate disposed on one side wall of the guide pipe. The scraper plate is triangular in plan view, so that the inclined side wall of the scraper plate fits against the filter screen. A scraper blade is installed on the inclined surface of the scraper plate. The scraper blade is made of rubber and has barbs to effectively improve the scraping efficiency. At the same time, the connection between the scraper blade and the scraper plate is reinforced by reinforcing ribs.

[0015] As a preferred embodiment of the hydropower station scraper filter of the present invention, the scraping component further includes a fixed shaft disposed inside the scraper, the scraper is uniformly disposed along the length direction of the fixed shaft, and the scraper is connected to the fixed shaft through a collar, and a torsion spring is disposed between the collar and the fixed shaft.

[0016] As a preferred embodiment of the hydropower station scraper filter of the present invention, the scraping component further includes a sliding plate disposed on the inner wall of the collar, a sliding groove is installed on the side wall of the fixed shaft, the sliding plate drives the scraper to float up and down through the sliding groove, and a limiting plate is installed at the end of the collar, and a movable plate is installed at the bottom end of the limiting plate to connect with the scraper.

[0017] As a preferred embodiment of the hydropower station scraper-type water filter of the present invention, the connecting member includes a rotating ring disposed on the sidewalls at both ends of the fixed shaft. The rotating ring is rotatably connected to the fixed shaft, and the sidewall of the fixed shaft is provided with a groove. A sliding rod is installed inside the groove. A telescopic spring is sleeved on the sidewall of the sliding rod. The end of the sliding rod away from the fixed shaft is inclined. The inclined surface of the sliding rod matches the limiting hole on the sidewall of the rotating ring. The side cross-sectional view of the limiting hole is funnel-shaped.

[0018] The beneficial effects of this invention are as follows: Through the innovative design of the scraping component, particularly the triangular arrangement and barbed scraper of the scraper, this invention can more effectively adhere to and remove impurities from the filter screen, significantly improving filtration efficiency, reducing water flow blockage caused by impurity accumulation, and ensuring continuous and stable water flow. The combination design of the rotating ring and sliding rod of the connecting component enables precise adjustment of the contact pressure between the scraper and the filter screen. This adaptive pressure control mechanism ensures efficient scraping while automatically adjusting according to the actual condition of the filter screen, reducing wear on the filter screen and extending the service life of the equipment. The scraper angle and pressure can be quickly adjusted by simply rotating the rotating ring, without the need for complex tools or professional skills, greatly reducing maintenance difficulty and operating costs. Furthermore, the trumpet-shaped design of the limiting hole makes the adjustment process smoother and easier to position, improving the user-friendliness and ease of operation of the system. This design, through the adaptive pressure adjustment of the scraper, is widely applicable to various working conditions, improving the stability and reliability of the system in complex environments, reducing the risk of system downtime due to filter clogging, and ensuring the continuous and safe operation of critical facilities such as hydropower stations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of a scraper-type water filter for a hydroelectric power station.

[0021] Figure 2 This is a schematic diagram of the filter assembly structure of a scraper-type water filter in a hydropower station.

[0022] Figure 3 This is a schematic cross-sectional view of the water delivery pipe of a scraper-type water filter in a hydropower station.

[0023] Figure 4 This is a sectional side view of the water delivery pipe of a scraper-type water filter in a hydropower station.

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the turbine and reinforcing plate of a scraper-type water filter in a hydropower station.

[0025] Figure 6 This is a schematic diagram of the guide pipe structure of a scraper-type water filter in a hydropower station.

[0026] Figure 7 This is a schematic diagram of the scraper structure of a scraper-type water filter in a hydropower station.

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the scraper of a scraper-type water filter in a hydropower station.

[0028] Figure 9 A top view of the connection structure of a scraper-type water filter in a hydropower station.

[0029] Figure 10 This is a cross-sectional view of the connection structure of a scraper-type water filter in a hydropower station.

[0030] Figure label:

[0031] 100. Filter assembly; 101. Base; 102. Control box; 103. Water supply pipe; 104. Secondary filter tube; 105. Filter element;

[0032] 105a, Servo motor; 105b, Drive gear; 105c, Filter screen; 105d, Reinforcing edge; 105e, Tooth block; 105f, Reinforcing plate; 105g, Connecting shaft; 105h, Water turbine; 105i, Sewage pipe; 105j, Flow meter; 105k, Control valve;

[0033] 201. Flow guide tube; 202. Scraper; 203. Connecting parts;

[0034] 202a, flow guide channel; 202b, scraper; 202c, scraper blade; 202d, reinforcing rib;

[0035] 202e, fixed shaft; 202f, collar; 202g, torsion spring; 202h, sliding plate; 202i, sliding groove; 202j, limiting plate; 202k, moving plate;

[0036] 203a, Rotating ring; 203b, Empty groove; 203c, Sliding rod; 203d, Telescopic spring; 203e, Limiting hole. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0041] Example 1

[0042] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a scraper-type water filter for hydropower stations, which includes an integrated mechanical and control system that works together to achieve efficient filtration, automatic removal of impurities, and dynamic monitoring, thereby ensuring continuous and high-quality water treatment capabilities.

[0043] Specifically, the filter assembly 100 includes a base 101 and a control box 102 disposed at the top of the base 101. A water supply pipe 103 is installed on the side wall of the control box 102. A secondary filter pipe 104 is disposed on the side wall of the water supply pipe 103, and a filter element 105 is disposed on the side wall of the water supply pipe 103.

[0044] Furthermore, the filter element 105 includes a servo motor 105a disposed on the side wall of the water supply pipe 103, the output end of the servo motor 105a extends into the interior of the water supply pipe 103 and a drive gear 105b is installed therein, and a filter screen 105c is installed inside the water supply pipe 103.

[0045] Furthermore, the filter element 105 also includes a reinforcing edge 105d disposed on the circumferential sidewall of the filter screen 105c. The sidewall of the reinforcing edge 105d is equipped with a toothed block 105e, and the sidewall of the filter screen 105c is equipped with a reinforcing plate 105f, which is used to provide support for the filter screen 105c.

[0046] Furthermore, the filter element 105 also includes a connecting shaft 105g disposed at the end of the reinforcing plate 105f. A water turbine 105h is installed on the side wall of the connecting shaft 105g. The reinforcing plates 105f are arranged in a circular array with the central axis point of the reinforcing edge 105d, and the connecting shaft 105g is located at the center point of the reinforcing plate 105f.

[0047] Furthermore, the filter element 105 also includes a drain pipe 105i disposed on the side wall of the water supply pipe 103, a flow meter 105j disposed on the side wall of the drain pipe 105i, and a control valve 105k installed on the side wall of the flow meter 105j.

[0048] Furthermore, the scraper 202 includes a guide groove 202a provided on the side wall of the guide pipe 201. The bottom end of the guide groove 202a is closed, and the closing plate at the bottom end of the guide groove 202a is arc-shaped. The top end of the guide groove 202a corresponds to the drain pipe 105i.

[0049] Operation process: First, the operator issues a command through the control box 102 to start the servo motor 105a. Upon receiving the command, the servo motor 105a begins operation, and its output drive gear 105b rotates accordingly. With the rotation of the drive gear 105b, the connecting shaft 105g and the connected water turbine 105h also begin to rotate through the mechanical transmission structure. The rotation of the water turbine 105h utilizes the power of the water flow to further accelerate the flow of water in the water pipe 103. During the flow, the water passes through the filter screen 105c, achieving primary filtration and reducing impurities. Some impurities carried by the water flow are intercepted by the filter screen 105c. The reinforcing plate 105f and the reinforcing edge 105d provide stable support for the filter screen 105c, preventing deformation or damage caused by water flow impact. Simultaneously, the scraper 202 within the guide pipe 201 begins operation. The scraper 202b, driven by a power device, moves along the filter screen 105c, with its scraper blades 202c adhering closely to the surface of the filter screen 105c, effectively scraping away the attached impurities. The control valve 105k opens in a timely manner. Due to the higher pressure inside the pipe and the lower pressure inside the guide channel 202a, these impurities are then guided into the guide channel 202a and directed through the closed plate at its bottom to the drain pipe 105i. Finally, under the monitoring of the flow meter 105j, the impurities are discharged. Throughout the process, the flow meter 105j continuously monitors the volume of water and the amount of impurities discharged through the drain pipe 105i, providing real-time data feedback to the control box 102. Based on this data, the control box can automatically or manually adjust the opening and closing of the control valve 105k, and may adjust the speed of the servo motor 105a to optimize filtration efficiency and maintain the balance of water flow dynamics.

[0050] Example 2

[0051] Reference Figures 6-8 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the scraper-type water filter realizes automatic and efficient cleaning of the filter screen 105c, optimizes water treatment efficiency, and also reduces maintenance burden.

[0052] Specifically, the cleaning component 200 includes a guide tube 201 disposed on the side wall of the filter element 105. The diameter of the guide tube 201 is set in a shape that is wider at the top and narrower at the bottom. A scraper 202 is disposed near the inner wall of the guide tube 201 and the scraper 202 is connected to the guide tube 201 through a connector 203.

[0053] Furthermore, the scraping component 202 also includes a scraper 202b disposed on one side wall of the guide tube 201. The scraper 202b is triangular in plan view, so that the inclined side wall of the scraper 202b fits against the filter screen 105c. A scraper 202c is installed on the inclined surface of the scraper 202b. The scraper 202c is made of rubber and has barbs, which can effectively improve the scraping efficiency. At the same time, the connection between the scraper 202c and the scraper 202b is reinforced by a reinforcing rib 202d.

[0054] Furthermore, the scraping component 202 also includes a fixed shaft 202e disposed inside the scraper 202b. The scraper 202b is evenly disposed along the length direction of the fixed shaft 202e, and the scraper 202b is connected to the fixed shaft 202e through a collar 202f. A torsion spring 202g is disposed between the collar 202f and the fixed shaft 202e.

[0055] Furthermore, the scraper 202 also includes a sliding plate 202h disposed on the inner wall of the collar 202f, a sliding groove 202i installed on the side wall of the fixed shaft 202e, the sliding plate 202h drives the scraper 202b to float up and down through the sliding groove 202i, and a limiting plate 202j is installed at the end of the collar 202f, and a moving plate 202k is installed at the bottom end of the limiting plate 202j to connect with the scraper 202b.

[0056] The rest of the structure is the same as in Example 1.

[0057] Operation Process: Water flows into the filtration system through the water supply pipe 103. It first undergoes preliminary filtration through the filter screen 105c, intercepting most impurities. During filtration, some impurities may adhere to the filter screen 105c. At this time, the guide pipe 201, with its unique design of being wider at the top and narrower at the bottom, guides the water flow upwards along the guide pipe, increasing the water flow velocity and generating a certain vortex effect, creating favorable conditions for the subsequent scraping process. The scraper 202 is pre-installed in the appropriate position on the guide pipe 201 via the connector 203, awaiting activation. As the water continues to flow, the scraper 202b, aided by the rotational force of the filter screen 105c, floats up and down along the fixed shaft 202e under the action of the torsion spring 202g. Through the interaction between the collar 202f and the sliding plate 202h, it ensures close contact between the scraper and the filter screen 105c. The triangular design and inclined sidewalls of the scraper 202b, combined with the rubber-made barbed scraper 202c, effectively conform to the filter screen surface, improving scraping efficiency. During the scraping process, the torsion spring 202g automatically adjusts the pressure of the scraper 202b on the filter screen according to the scraping resistance, ensuring effective removal of impurities without damaging the filter screen. The moving plate 202k and the limiting plate 202j further ensure that the vertical movement range of the scraper is controlled, preventing excessive movement and damage to the equipment. The barbed design on the scraper 202c uses physical force to scrape off impurities from the filter screen. These loosened impurities then enter the guide pipe 201 with the water flow and are finally discharged through the system's designed drainage mechanism, maintaining the continuous and efficient operation of the filtration system.

[0058] Example 3

[0059] Reference Figures 9-10 This is the third embodiment of the present invention. The difference between this embodiment and the previous embodiments is that the angle and pressure of the scraper 202b can be flexibly adjusted through the precise design of the connector 203, which not only improves the efficiency and quality of impurity removal, but also enhances the adaptability and ease of use of the system.

[0060] Specifically, the connecting component 203 includes rotating rings 203a disposed on the side walls at both ends of the fixed shaft 202e. The rotating rings 203a are rotatably connected to the fixed shaft 202e, and the side wall of the fixed shaft 202e is provided with a groove 203b. A sliding rod 203c is installed inside the groove 203b, and a telescopic spring 203d is sleeved on the side wall of the sliding rod 203c. The end of the sliding rod 203c away from the fixed shaft 202e is inclined, and the inclined surface of the sliding rod 203c matches the limiting hole 203e on the side wall of the rotating ring 203a. The side cross-sectional view of the limiting hole 203e is funnel-shaped. The rotatable connection between the rotating ring 203a and the fixed shaft 202e forms the basis for adjusting the angle of the scraper 202b. The operator can manually rotate the rotating ring 203a to make the fixed shaft 202e rotate accordingly. This design provides the possibility for fine adjustment of the scraper angle. Angle and pressure adaptive adjustment: When the rotating ring 203a rotates, its limiting hole 203e interacts with the inclined surface of the sliding rod 203c, causing the sliding rod to slide within the slot 203b. During this process, the telescopic spring 203d is compressed or released, applying or reducing pressure on the sliding rod, which is then transmitted to the scraper 202b through the collar 202f and the fixed shaft 202e, thereby adjusting the contact pressure between the scraper and the filter screen. Different limiting hole positions correspond to different scraper angles and pressures, achieving an optimal balance between scraping efficiency and filter screen protection.

[0061] The rest of the structure is the same as in Example 2.

[0062] Operation process: First, the water pump is controlled by the control box 102 to transfer water to the water supply pipe 103. The water in the water supply pipe 103 is filtered by the filter screen 105c in the filter element 105, reducing impurities entering the filter pipe 104. When the water flows through the water supply pipe 103, the servo motor 105a is started, driving the drive gear 105b to rotate. With the rotation of the drive gear 105b, the connecting shaft 105g and the water turbine 105h connected to it also start to rotate through the mechanical transmission structure. Since the guide pipe 201 and the scraper 202b are in contact with the filter screen 105c, the water flows through the scraper 202b. 2b can clean impurities in the filter screen 105c. The scraper 202b is equipped with a scraper 202c at the contact point with the filter screen 105c. The scraper 202c is opposite to the direction of the scraper 202b, thereby improving the cleaning efficiency of the filter screen 105c. When the scraper 202b cleans the filter screen 105c, its torsion spring 202g will drive the scraper 202b to always be in contact with the filter screen 105c. The scraper 202b is set in multiple segments, which are divided into multiple independent elastic segments. The contact pressure between each segment and the filter screen 105c can be adjusted by the built-in torsion spring 202g. The elastic coefficient of each section can be customized according to the characteristics of the deposits in different areas of the filter screen to achieve the best cleaning effect. When the scraper 202b is installed, it is tilted at a slight angle of about 5°-10° to the filter screen 105c. This helps to guide the water flow and increase the scraping force. The cleaning efficiency is improved by utilizing the principle of hydrodynamics. Because the scraper 202b adopts a variable cross-section design, that is, its cross-sectional area gradually changes from one end of the scraper 202b to the other end, forming a wedge structure.This design allows the scraper 202b to apply different pressures based on the distribution and adhesion strength of the deposits on the filter screen 105c when in contact with it, thereby removing impurities more effectively while reducing damage to the filter screen. When the scraper 202b encounters larger impurities that it cannot clean while removing the filter screen 105c, the greater squeezing force on the scraper 202b will cause the collar 202f to move up and down. The sliding plate 202h on the collar 202f moves in the sliding groove 202i. The installation of the scraper 202b in the guide tube 201 adopts a floating design, allowing it to adaptively adjust to the surface contour of the filter screen 105c, always maintaining the most effective contact angle (approximately 30°-45°). This helps to remove impurities deep into the texture of the filter screen 105c. During installation, the rotating ring 203a can be rotated to adjust the operating angle of the scraper 202b. The rotating ring 203a can rotate through the limiting hole 203e. The inclined surface of the limiting hole 203e matches the inclined surface of the sliding rod 203c, which will drive the sliding rod 203c to move into the empty groove 203b inside the fixed shaft 202e. This will compress and store the tension spring 203d on the sliding rod 203c. The rotating ring 203a will drive the fixed shaft 202e to rotate, thus completing the angle adjustment of the scraper 202b. When the sliding rod 203c reaches the next limiting hole 203e, the elastic force of the tension spring 203d can effectively drive the sliding rod 203c to rebound and lock into the inside of the limiting hole 203e for fixation.

[0063] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the particular embodiments.

[0064] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0065] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A scraper-type water filter for hydropower stations, characterized in that: include, The filter assembly (100) includes a base (101) and a control box (102) disposed at the top of the base (101). A water supply pipe (103) is installed on the side wall of the control box (102), a secondary filter pipe (104) is disposed on the side wall of the water supply pipe (103), and a filter element (105) is disposed on the side wall of the water supply pipe (103). The cleaning assembly (200) includes a guide tube (201) disposed on the side wall of the filter element (105). The diameter of the guide tube (201) is set in a manner that is wider at the top and narrower at the bottom. A scraper (202) is disposed on the inner wall of the guide tube (201) near the filter element (105). The scraper (202) is connected to the guide tube (201) through a connector (203). The filter element (105) includes a servo motor (105a) disposed on the side wall of the water supply pipe (103), the output end of the servo motor (105a) extends into the interior of the water supply pipe (103) and a drive gear (105b) is installed therein, and a filter screen (105c) is installed inside the water supply pipe (103). The scraping component (202) includes a scraper (202b) disposed on one side wall of the guide pipe (201). The scraper (202b) is triangular in plan view, so that the inclined side wall of the scraper (202b) fits against the filter screen (105c). A scraper (202c) is mounted on the inclined surface of the scraper (202b). The scraper (202c) is made of rubber and has barbs, which can effectively improve the scraping efficiency. At the same time, the connection between the scraper (202c) and the scraper (202b) is reinforced by a reinforcing rib (202d). The scraping component (202) further includes a fixed shaft (202e) disposed inside the scraper (202b). The scraper (202b) is evenly disposed along the length direction of the fixed shaft (202e), and the scraper (202b) is connected to the fixed shaft (202e) through a collar (202f). A torsion spring (202g) is disposed between the collar (202f) and the fixed shaft (202e). The scraping component (202) further includes a sliding plate (202h) disposed on the inner wall of the collar (202f), and a sliding groove (202i) is installed on the side wall of the fixed shaft (202e). The sliding plate (202h) drives the scraper (202b) to float up and down through the sliding groove (202i). A limiting plate (202j) is installed at the end of the collar (202f), and a moving plate (202k) is installed at the bottom end of the limiting plate (202j) to connect with the scraper (202b).

2. The hydropower station scraper-type water filter as described in claim 1, characterized in that: The filter element (105) further includes a reinforcing edge (105d) disposed on the circumferential sidewall of the filter screen (105c), the sidewall of the reinforcing edge (105d) is equipped with a toothed block (105e), and the sidewall of the filter screen (105c) is equipped with a reinforcing plate (105f), the reinforcing plate (105f) being used to provide support for the filter screen (105c).

3. The hydropower station scraper-type water filter as described in claim 2, characterized in that: The filter element (105) also includes a connecting shaft (105g) disposed at the end of the reinforcing plate (105f). A water turbine (105h) is installed on the side wall of the connecting shaft (105g). The reinforcing plate (105f) is arranged in a circular array with the central axis of the reinforcing edge (105d) as the center point, and the connecting shaft (105g) is located at the center point of the reinforcing plate (105f).

4. The hydropower station scraper-type water filter as described in claim 3, characterized in that: The filter element (105) also includes a drain pipe (105i) disposed on the side wall of the water supply pipe (103), and a flow meter (105j) is disposed on the side wall of the drain pipe (105i), and a control valve (105k) is installed on the side wall of the flow meter (105j).

5. The hydropower station scraper-type water filter as described in claim 4, characterized in that: The scraper (202) includes a guide groove (202a) disposed on the side wall of the guide pipe (201). The bottom end of the guide groove (202a) is closed, and the closing plate at the bottom end of the guide groove (202a) is arc-shaped. The top end of the guide groove (202a) corresponds to the drain pipe (105i).

6. The hydropower station scraper-type water filter as described in claim 5, characterized in that: The connector (203) includes a rotating ring (203a) disposed on the sidewalls at both ends of the fixed shaft (202e). The rotating ring (203a) is rotatably connected to the fixed shaft (202e). The sidewall of the fixed shaft (202e) is provided with a slot (203b). A sliding rod (203c) is installed inside the slot (203b). A telescopic spring (203d) is sleeved on the sidewall of the sliding rod (203c). The end of the sliding rod (203c) away from the fixed shaft (202e) is inclined. The inclined surface of the sliding rod (203c) matches the limiting hole (203e) on the sidewall of the rotating ring (203a). The side cross-sectional view of the limiting hole (203e) is funnel-shaped.

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