Water conservancy drainage self-cleaning type filtering device

Abstract

The utility model discloses a water conservancy drainage self-cleaning type filtering device which comprises a connecting pipe, a filtering mechanism is arranged in the middle of the connecting pipe, a sludge tank is arranged below the filtering mechanism, a blow-off pipe is arranged at one end of the sludge tank, and a telescopic scraping plate and a rotary dirt scraping mechanism are arranged in the filtering mechanism. The problem that a traditional filtering device is blocked due to dirt accumulation is effectively avoided, the filtering efficiency is greatly improved, and the service life is greatly prolonged; meanwhile, through ingenious combination of the axial flow water wheel and the transmission mechanism, the dirt scraping plate is driven to rotate through water flow power, reasonable utilization of energy is achieved, and the operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy facilities technology, and in particular to a self-cleaning filtration device for water conservancy drainage. Background Technology

[0002] In water conservancy and drainage systems, filtration devices are key components for ensuring clean water and smooth drainage. Traditional drainage filtration devices mostly use fixed filter screen structures. Although they can intercept some impurities to a certain extent, over time, more and more dirt accumulates on the filter screen, which not only reduces filtration efficiency but may also become a new source of blockage. Manually cleaning the dirt on the filter screen is not only labor-intensive and inefficient, but may also affect the normal operation of the drainage system if cleaning is not done in a timely manner.

[0003] Currently, although there are some filter devices with self-cleaning functions on the market, most of them have problems such as complex structure, high maintenance cost, and unsatisfactory self-cleaning effect. For example, some devices rely on external power sources for mechanical cleaning, which not only increases energy consumption and cost, but may also damage the filter screen during the cleaning process; other devices clean by the impact force of the water flow itself, but the effect is limited and it is difficult to completely remove stubborn dirt from the filter screen.

[0004] Therefore, it is necessary to develop a self-cleaning filtration device for water drainage that is simple in structure, easy to maintain, and has a significant self-cleaning effect. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a self-cleaning filtration device for water drainage to solve the problems mentioned in the background art.

[0006] To achieve the above technical objectives, the present invention provides a self-cleaning filtration device for water drainage, comprising a connecting pipe, a filtration mechanism disposed in the middle of the connecting pipe, a sludge tank disposed below the filtration mechanism, a drain pipe disposed at one end of the sludge tank, the filtration mechanism comprising a filter shell communicating with the sludge tank, a filter screen support disposed inside the filter shell, the filter screen support fitting into the inner wall of the filter shell, a filter screen disposed on the support, a horizontal support rod disposed at the lower part of the filter screen support, a scraper mechanism disposed in the middle of the horizontal support rod, an axial flow water wheel disposed inside the connecting pipe, the axial flow water wheel being disposed on the clean water side of the filter screen, the axial flow water wheel driving the scraper mechanism to rotate and scrape the sludge on the filter screen into the sludge tank.

[0007] Furthermore, the scraper mechanism includes a rotating shaft, which is rotatably mounted on a horizontal support rod and connected to the axial flow water wheel via a transmission mechanism. Several scraping blades are arranged in a circumferential array on the rotating shaft. Each scraping blade includes a main scraper and a telescopic scraper. The main scraper has a slot along its length that mates with the telescopic scraper. The main scraper is equipped with a sludge removal mechanism. When the scraper rotates into the sludge trough, the telescopic scraper drives the sludge removal mechanism to slide and scrape away the dirt on the main scraper.

[0008] Furthermore, the telescopic scraper includes a guide post and a scraper blade. The guide post is hollow and contains a tension spring. The side of the guide post has a sliding hole. The end of the main scraper blade has a positioning pin. The positioning pin passes through the sliding hole and connects to one end of the tension spring. The other end of the tension spring is connected to the end of the guide post away from the positioning pin. The end of the guide post has a connecting mechanism that cooperates with the sludge removal mechanism.

[0009] Furthermore, the sludge removal mechanism includes a sliding column and two inclined scrapers. A sludge removal support plate is provided at the top of the sliding column, and the two inclined scrapers are respectively provided at both ends of the sludge removal support plate. A sliding groove is provided on the main scraper, extending into the slot. The sliding column is slidably disposed in the sliding groove. The sliding column is hollow and has a locking tongue at its lower part. A wedge is provided inside the slot, which restricts the sliding column to the end of the sliding groove adjacent to the rotating shaft. An arc-shaped groove is provided at the bottom of the main scraper, which is located between the end of the sliding groove and the wedge. An arc-shaped top block that cooperates with the arc-shaped groove is provided on the horizontal support rod.

[0010] Furthermore, the connecting mechanism includes a U-shaped groove disposed at one end of the guide post, the U-shaped groove cooperating with the sliding post, and a ball-head plunger disposed on the inner wall of the U-shaped groove.

[0011] Compared with the prior art, the beneficial effects of this utility model include:

[0012] 1. This utility model achieves automatic cleaning of the filter screen through the built-in telescopic scraper and rotating scraping mechanism. It not only effectively avoids the clogging problem caused by the accumulation of dirt in traditional filter devices, but also greatly improves the filtration efficiency and service life. At the same time, through the ingenious combination of axial flow water wheel and transmission mechanism, the scraper is driven to rotate by water flow power, realizing the rational use of energy and reducing operating costs.

[0013] 2. This utility model, through the sludge trough and sewage pipe, can conveniently collect and discharge the scraped dirt, avoiding the accumulation of dirt in the device, thereby maintaining the stability and continuity of the filtration effect; the telescopic scraper can intelligently adjust according to the shape of the filter screen and the distribution of dirt, ensuring thorough and uniform scraping; in addition, the sludge removal mechanism can automatically scrape dirt when the scraper rotates to the sludge trough, further improving the efficiency and convenience of sludge treatment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a self-cleaning filtration device for water drainage provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a self-cleaning filtration device for water conservancy and drainage provided by this utility model;

[0016] Figure 3 This is a schematic diagram of the scraper plate of a self-cleaning filter device for water drainage provided by this utility model;

[0017] Figure 4 This is an exploded view of the scraper plate of a self-cleaning filter device for water drainage provided by this utility model;

[0018] Figure 5 This is a cross-sectional view of the scraper plate of a self-cleaning filter device for water drainage provided by this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Reference Figure 1 This utility model provides a self-cleaning filtration device for drainage, including a connecting pipe 1. A filter mechanism 2 is installed in the middle of the connecting pipe 1 to intercept solid particles in the drainage. A sludge tank 3 is installed below the filter mechanism 2 to collect the intercepted sludge. A drain pipe 4 is installed at one end of the sludge tank 3 to discharge the cleaned sludge. In practical applications, a drain valve can be installed on the drain pipe 4 or it can be connected to a sludge recovery mechanism.

[0021] Reference Figure 2The filter mechanism 2 consists of a filter housing 201 and a filter screen support 6 installed inside it. The filter housing 201 is connected to the sludge tank 3 to facilitate the falling of dirt into the sludge tank 3. The filter screen support 6 fits into the inner wall of the filter housing 201, and a filter screen 7 is installed on it. A horizontal support rod 601 is provided at the lower part of the filter screen support 6. A rotating shaft 8 is rotatably installed in the middle of the horizontal support rod 601. Several scraper blades 9 are arranged in a circular array on the rotating shaft 8 to scrape dirt off the filter screen 7. An axial flow water wheel 5 is installed in the connecting pipe 1 on the clean water side of the filter screen 7. The axial flow water wheel 5 rotates using the power of water flow and is connected to the rotating shaft 8 through a transmission mechanism, driving the scraper blades 9 to rotate, thereby scraping the residue on the filter screen 7 into the sludge tank 3.

[0022] Reference Figure 3 , Figure 4 The scraper 9 includes a main scraper 901 and a telescopic scraper 902. The main scraper 901 has a slot 903 along its length for installing and supporting the telescopic scraper 902. The main scraper 901 is also provided with a sludge removal mechanism 905, which is used to scrape the dirt on the main scraper 901 into the sludge tank 3 when the scraper 9 rotates into the sludge tank 3.

[0023] The telescopic scraper 902 includes a guide post 906 and a scraper blade 907. The guide post 906 is hollow and contains a tension spring (not shown) to provide telescopic force. A sliding hole 908 is provided on the side of the guide post 906. A positioning pin 904 is provided at the end of the main scraper blade 901. The positioning pin 904 passes through the sliding hole 908 and connects to one end of the tension spring. The other end of the tension spring is connected to the end of the guide post 906 away from the positioning pin 904. Thus, when the scraper blade 902 rotates, the telescopic scraper 902 can extend or retract according to the shape of the filter screen.

[0024] The sludge removal mechanism 905 includes a sliding column 911 and two inclined scrapers 914. A sludge removal support plate 913 is provided on the top of the sliding column 911, and the two inclined scrapers 914 are respectively provided at both ends of the sludge removal support plate 913, and can scrape away dirt on both sides of the main scraper 901 under the action of the sliding column 911. The main scraper 901 is provided with a groove 916 that extends into the slot 903, and the sliding column 911 is slidably disposed in the groove 916.

[0025] The sliding column 911 is hollow and has a locking tongue 912 at its lower part. A wedge block 917 is provided in the slot 903 to restrict the sliding column 911 to the end of the slide groove 916 adjacent to the rotating shaft 8. The bottom of the main scraper 901 is provided with an arc-shaped groove 915, which is located between the end of the slide groove 916 and the wedge block 917. An arc-shaped top block 603 that cooperates with the arc-shaped groove 915 is provided on the crossbar 601.

[0026] As the main scraper 901 rotates, the arc-shaped top block 603 enters the arc-shaped groove 915, lifting the latch 912 so that it can pass over the wedge block 917, thus achieving the unlocking function. To prevent the sliding post 911 from disengaging from the sliding groove 916 when the arc-shaped top block 603 lifts the latch 912, the adjacent surfaces of the inclined scraper 914 and the main scraper 901 can be set as mutually cooperating concave and convex surfaces.

[0027] One end of the guide post 906 has a U-shaped groove 909 that mates with the sliding post 911, and a ball-head plunger 910 on the inner wall of the U-shaped groove 909 is used to connect the sliding post 911.

[0028] To facilitate understanding of this utility model, the following is combined with... Figure 2 - Figure 5 The working principle of this solution will be explained in detail:

[0029] When water flows through the connecting pipe 1, the axial flow impeller 5 rotates using the power of the water flow, and the scraper 9 rotates through the transmission mechanism. During the rotation of the scraper 9, the telescopic scraper 902 on it extends or retracts according to the shape of the filter screen and the distribution of dirt, scraping off the sludge on the filter screen 7. When the scraper 9 rotates to the connection between the sludge tank 3 and the filter shell 201, the sliding column 911 is inserted into the U-shaped groove 909 and locked by the ball-head plunger 910. At the same time, when the arc-shaped top block 603 enters the arc-shaped groove 915, it pushes up the locking tongue 912 so that it can pass over the wedge block 917. As the scraper 9 rotates, the telescopic scraper 902 extends again under the action of the tension spring, thereby driving the inclined scraper 914 to scrape off the dirt on the main scraper 901 and make it fall into the sludge tank 3.

[0030] When the scraper 9 re-enters the filter housing 201, the locking tongue 912 slides along the wedge 917 and falls back into the groove 916 between the end and the wedge 917, thereby re-locking the mud removal mechanism 905. Under the restoring force of the tension spring, the sliding column 911 disengages from the U-shaped groove 909, without affecting the cleaning work of the scraper 9.

[0031] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A self-cleaning filtration device for water drainage, comprising a connecting pipe, a filtration mechanism disposed in the middle of the connecting pipe, a sludge tank disposed below the filtration mechanism, and a drain pipe disposed at one end of the sludge tank, characterized in that, The filtration mechanism includes a filter housing that is connected to the sludge tank. A filter screen support is provided inside the filter housing, and the filter screen support fits into the inner wall of the filter housing. A filter screen is mounted on the support. A horizontal support rod is provided at the lower part of the filter screen support, and a scraper mechanism is provided in the middle of the horizontal support rod. An axial flow water wheel is provided inside the connecting pipe and is located on the clean water side of the filter screen. The axial flow water wheel drives the scraper mechanism to rotate and scrape the sludge on the filter screen into the sludge tank.

2. The self-cleaning filtration device for water drainage according to claim 1, characterized in that: The scraper mechanism includes a rotating shaft, which is rotatably mounted on the horizontal support rod and connected to the axial flow water wheel via a transmission mechanism. Several scraping blades are arranged in a circular array on the rotating shaft. Each scraping blade includes a main scraper and a telescopic scraper. The main scraper has a slot along its length that mates with the telescopic scraper. The main scraper is equipped with a sludge removal mechanism. When the scraping blade rotates into the sludge trough, the telescopic scraper drives the sludge removal mechanism to slide and scrape away the dirt on the main scraper.

3. The self-cleaning filtration device for water drainage according to claim 2, characterized in that: The telescopic scraper includes a guide post and a scraper blade. The guide post is hollow and contains a tension spring. A sliding hole is provided on the side of the guide post. A positioning pin is provided at the end of the main scraper blade. The positioning pin passes through the sliding hole and is connected to one end of the tension spring. The other end of the tension spring is connected to the end of the guide post away from the positioning pin. A connecting mechanism that cooperates with the sludge removal mechanism is provided at one end of the guide post.

4. The self-cleaning filtration device for water drainage according to claim 3, characterized in that: The sludge removal mechanism includes a sliding column and two inclined scrapers. A sludge removal support plate is provided at the top of the sliding column, and the two inclined scrapers are respectively provided at both ends of the sludge removal support plate. A sliding groove is provided on the main scraper, extending into the slot. The sliding column is slidably disposed in the sliding groove. The sliding column is hollow and has a locking tongue at its lower part. A wedge is provided inside the slot, which restricts the sliding column to the end of the sliding groove adjacent to the rotating shaft. An arc-shaped groove is provided at the bottom of the main scraper, and the arc-shaped groove is disposed between the end of the sliding groove and the wedge. An arc-shaped top block that cooperates with the arc-shaped groove is provided on the horizontal support rod.

5. A self-cleaning filtration device for water drainage according to claim 4, characterized in that: The connecting mechanism includes a U-shaped groove disposed at one end of the guide post, the U-shaped groove cooperating with the sliding post, and a ball-head plunger disposed on the inner wall of the U-shaped groove.

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