Scraping blade assembly for a self-cleaning filter

Abstract

The utility model discloses a scraper assembly for self-cleaning filter, including three support bars, fixed block subassembly, scraper, three support bars are from top to bottom array fixed in the left side of rotating axle, and the fixed block subassembly is fixed in the left side portion of three support bars, and the scraper is vertically slipped and is inserted in the left side of fixed block subassembly, the fixed block subassembly includes the first fixed block of rectangular strip, second fixed block, and the second fixed block is located in the right side of first fixed block, and the second fixed block is fixedly connected with three support bars, the left side portion of first fixed block is equipped with the square limit groove, and the inside right side wall of square limit groove is equipped with dovetail slide groove, the distance from the front side portion to the back side portion of scraper is identical with the distance from the front side portion to the back side portion of square limit groove, and the right side portion of scraper is fixedly equipped with dovetail block, and the dovetail block is slipped and is inserted in dovetail groove, and the left front side of scraper is equipped with arc slot, the utility model has the advantages of being convenient for fixed scraper, adjusting the position of scraper, saving scraper, being convenient for adjusting.

Description

Technical Field

[0001] This utility model relates to automatic cleaning filters, and in particular to a scraper assembly for a self-cleaning filter. Background Technology

[0002] Currently, a patent with publication number "CN108126393A" discloses a multifunctional self-cleaning filter that can clean the interior of a tank without the need for a cleaning medium. The filter includes a tank, an inlet pipe on one side of the top of the tank, an outlet pipe on one side of the bottom of the tank, a filter device inside the tank, and a decontamination device inside the tank. The decontamination device includes a base fixed to the inner wall of the tank below the outlet pipe, a drive device at the top of the tank, a rotating rod connected to the drive device and extending through the tank to the top of the base, a sleeve at the bottom of the rotating rod and extending through the base, a drain pipe connected to the sleeve and extending to the outside, a vertical suction port connected to the sleeve for contacting the surface of the filter device, a crossbar on the rotating rod, and a scraper fixedly connected to the top of the crossbar on one side of the suction port for contacting the surface of the filter device.

[0003] When scraping away impurities from the inner wall, the scraper must be in contact with the inner side wall of the filter screen. The scraper is usually clamped and fixed with bolts and nuts. After long-term use, the nuts are prone to loosening, which will cause the scraper to become loose and the scraping will not be thorough. Moreover, after long-term use, the scraper will wear out and it will have to be replaced, which will result in the waste of scraper usage. Moreover, existing technology uses springs to hold the scraper in place, keeping it in close contact with the inner sidewall of the filter screen. However, since the scraper is used to remove impurities, impurities can easily get between the springs, affecting the spring's rebound force and thus failing to guarantee the cleanliness of the scraping. Utility Model Content

[0004] The purpose of this invention is to provide a scraper assembly for a self-cleaning filter, which has the advantages of easy scraper fixing, scraper position adjustment, scraper saving, and easy adjustment.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A scraper assembly for a self-cleaning filter includes a main body, inside which a filter element is disposed. A rotating shaft is rotatably connected to the middle of the filter element. A drive motor is fixedly disposed on the top of the main body. The rotating shaft is drivenly connected to the drive motor. Two sets of scraper assemblies are fixedly disposed on the left and right sides of the rotating shaft and are arranged to rotate 180° along the rotating shaft. The scraper assembly on the left side includes three support rods, a fixing block assembly, and a scraper. The three support rods are respectively placed horizontally and are fixedly arranged in an array from top to bottom on the left side of the rotating shaft. The fixing block assembly is fixedly disposed on the left side of the three support rods. The scraper is vertically slidably inserted into the left side of the fixing block assembly. The fixing block assembly includes a first fixing block and a second fixing block in the shape of a rectangular strip. The second fixing block is located to the right of the first fixing block and is fixedly connected to three support rods. A limiting square groove is provided on the left side of the first fixing block, and a dovetail slide groove is provided on the right side wall inside the limiting square groove; The distance from the front side to the rear side of the scraper is the same as the distance from the front side to the rear side of the limiting square groove. A dovetail block is fixedly provided on the right side of the scraper. The dovetail block is slidably inserted into the dovetail groove. An arc-shaped groove is provided on the left front side of the scraper.

[0006] The preferred option is as follows: Preferably, the limiting square groove of the first fixing block is provided with a plurality of vertically shaped clearance grooves.

[0007] Preferably, a gap of 1-2 mm is left between the inner right side wall of the dovetail groove and the right side of the dovetail block.

[0008] Preferably, the right side of the first fixing block has a plurality of first circular through holes arranged from top to bottom, penetrating the first fixing block and the second fixing block. The right side of the scraper has a plurality of second circular through holes arranged from top to bottom, corresponding to the first circular through holes. Each scraper has a plurality of circular placement grooves arranged on the arc-shaped groove sidewall corresponding to the second circular through holes. Each placement groove is provided with a first nut. Each first circular through hole is provided with a first bolt. Each first bolt is threadedly connected to its corresponding first nut.

[0009] Preferably, the right side of the arc-shaped groove of the scraper is flush with the left side of the first fixing block.

[0010] Preferably, the first fixing block has a groove on its right side, the second fixing block is located in the groove, and the right side of the second fixing block has a plurality of third circular through holes arranged in an array from top to bottom. The left side wall inside the groove of the first fixing block has circular grooves arranged in an array from top to bottom, corresponding to the plurality of third circular through holes. The right side of the second fixing block is fixed with a second nut corresponding to several third circular through holes. Each second nut is threaded with a second bolt. The thread of each second bolt is inserted into its corresponding circular groove, and the thread of each second bolt abuts against the inner left side wall of its corresponding circular groove.

[0011] Preferably, the front and rear sides of the inner left side wall of the slide are provided with a first chamfer; The left side of the second fixing block has a second chamfer on the front and rear sides.

[0012] In summary, this utility model has the following beneficial effects: 1. The fixed block assembly allows for easy adjustment of the distance between the scraper and the inner sidewall of the filter screen; 2. The scraper can remove impurities from the inner sidewalls of the filter screen while guiding the direction of the scraping. Attached Figure Description

[0013] Figure 1 This is a partial cross-sectional view of the overall structural design of the embodiment; Figure 2 This is a schematic diagram of the structural design of the scraper assembly on the left side of the embodiment; Figure 3 This is a partial cross-sectional view of the scraper assembly on the left side of the embodiment.

[0014] In the diagram, 1 is the main body; 2 is the filter element; 3 is the rotating shaft; 4 is the drive motor; 5 is the scraper assembly; 6 is the fixing block assembly; 7 is the scraper; 511 is the support rod; 611 is the first fixing block; 612 is the second fixing block; 613 is the first nut; 614 is the first bolt; 615 is the second nut; 616 is the second bolt; and 711 is the dovetail block. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings.

[0017] A scraper assembly for a self-cleaning filter, such as Figures 1-3 As shown, it includes a main body 1, a filter element 2 inside the main body 1, a rotating shaft 3 rotatably connected to the middle position of the filter element 2, a drive motor 4 fixedly installed on the top of the main body 1, the rotating shaft 3 being connected to the drive motor 4, and two sets of scraper assemblies 5 fixedly installed on the left and right sides of the rotating shaft 3, which are placed and rotated 180° along the rotating shaft 3.

[0018] The scraper assembly 5 located on the left side is described in detail.

[0019] The scraper assembly 5 located on the left side includes three support rods 511, a fixing block assembly 6, and a scraper 7. The three support rods 511 are placed horizontally and are fixedly arranged in an array from top to bottom on the left side of the rotating shaft 3. The fixing block assembly 6 is fixedly located on the left side of the three support rods 511, and the scraper 7 is vertically slidably inserted into the left side of the fixing block assembly 6.

[0020] The fixing block assembly 6 includes a first fixing block 611 and a second fixing block 612 in the shape of a rectangular strip. The second fixing block 612 is located to the right of the first fixing block 611 and is fixedly connected to three support rods 511. The right side of the first fixing block 611 is provided with a sliding groove, and the front and rear sides of the left side wall inside the sliding groove are provided with a first chamfer. The front and rear sides of the left side of the second fixing block 612 are provided with a second chamfer. The second fixing block 612 is located inside the sliding groove. The right side of the second fixing block 612 is provided with a plurality of third circular through holes arranged from top to bottom. The left side wall inside the sliding groove of the first fixing block 611 is provided with circular grooves arranged from top to bottom that correspond to the plurality of third circular through holes. The right side of the second fixing block 612 is fixed with a second nut 615 corresponding to a number of third circular through holes. Each second nut 615 is threaded with a second bolt 616. The thread of each second bolt 616 is inserted into its corresponding circular groove, and the thread of each second bolt 616 abuts against the inner left side wall of its corresponding circular groove.

[0021] A limiting square groove is provided on the left side of the first fixing block 611, and a dovetail slide groove is provided on the right side wall inside the limiting square groove. The distance from the front side to the rear side of the scraper 7 is the same as the distance from the front side to the rear side of the limiting square groove. A dovetail block 711 is fixedly provided on the right side of the scraper 7. The dovetail block 711 is slidably inserted into the dovetail groove. A gap of 1-2mm is left between the inner right side wall of the dovetail groove and the right side of the dovetail block 711. An arc-shaped groove is provided on the left front side of the scraper 7. The right side of the arc-shaped groove of the scraper 7 is flush with the left side of the first fixing block 611.

[0022] The right side of the first fixing block 611 has several first circular through holes arranged from top to bottom, passing through the first fixing block 611 and the second fixing block 612. The right side of the scraper 7 has several second circular through holes arranged from top to bottom, corresponding to the first circular through holes. The arc-shaped groove sidewall of each scraper 7 has several circular placement grooves corresponding to the second circular through holes. Each placement groove is provided with a first nut 613. Each first circular through hole is provided with a first bolt 614. Each first bolt 614 is threadedly connected to its corresponding first nut 613.

[0023] The first fixing block 611 has several vertically shaped clearance grooves arranged in the limiting square groove. The clearance grooves and the right side wall of the dovetail groove are left with a gap of 1-2mm between them and the right side of the dovetail block 711. This is to prevent the scraper 7 from sticking tightly to the first fixing block 611 and being stuck together, making it inconvenient to remove the scraper 7.

[0024] Specific implementation process: Step 1: Replace with a new scraper blade 7; Rinse the scraper assembly 5 clean, loosen the first bolt 614 and the first nut 613 respectively, then remove the first bolt 614 and the first nut 613, remove the first fixing block 611 and the scraper 7, and slide the old scraper 7 out of the first fixing block 611. Step 2: Slide the new scraper 7 into the dovetail groove of the first fixing block 611; Step 3: Fit the right side of the first fixing block 611 onto the second fixing block 612. The left side wall inside the circular groove of the first fixing block 611 abuts against the second bolt 616. Rotate the second bolt 616 so that the right side of the first fixing block 611 is flush with the right side of the second fixing block 612. Step 4: Insert the first bolt 614 into the first circular perforation, place the first nut 613 in the placement groove, and thread the first bolt 614 and the first nut 613 together to fix them. Then insert them into the filter element 2 of the main body 1. Step 5: When the old scraper 7 is worn and needs to be adjusted; Rinse the scraper assembly 5 clean, loosen the first bolt 614 and the first nut 613 respectively, then remove the first bolt 614 and the first nut 613, remove the first fixing block 611 and the scraper 7, slide the old scraper 7 out of the first fixing block 611, and plan and trim the old scraper 7 to ensure that the dimensions are consistent and flush from top to bottom. Repeat steps three through four.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A scraper assembly for a self-cleaning filter, comprising a main body (1), wherein a filter element (2) is disposed inside the main body (1), a rotating shaft (3) is rotatably connected to the middle position of the filter element (2), a drive motor (4) is fixedly disposed on the top of the main body (1), the rotating shaft (3) is connected to the drive motor (4) for transmission, and two sets of scraper assemblies (5) are fixedly disposed on the left and right sides of the rotating shaft (3) and placed at 180° rotation along the rotating shaft, characterized in that: The scraper assembly (5) located on the left side includes three support rods (511), a fixing block assembly (6), and a scraper (7). The three support rods (511) are placed horizontally and are fixedly arranged in an array from top to bottom on the left side of the rotating shaft (3). The fixing block assembly (6) is fixedly located on the left side of the three support rods (511). The scraper (7) is vertically slidably inserted into the left side of the fixing block assembly (6). The fixing block assembly (6) includes a first fixing block (611) and a second fixing block (612) in the shape of a rectangular strip. The second fixing block (612) is located to the right of the first fixing block (611) and is fixedly connected to three support rods (511). A limiting square groove is provided on the left side of the first fixing block (611), and a dovetail groove is provided on the right side wall inside the limiting square groove. The distance from the front side to the rear side of the scraper (7) is the same as the distance from the front side to the rear side of the limiting square groove. A dovetail block (711) is fixedly provided on the right side of the scraper (7). The dovetail block (711) is slidably inserted into the dovetail groove. An arc-shaped groove is provided on the left front side of the scraper (7).

2. The scraper assembly for a self-cleaning filter according to claim 1, characterized in that: The first fixing block (611) has several vertically shaped clearance grooves arranged in the limiting square groove.

3. The scraper assembly for a self-cleaning filter according to claim 2, characterized in that: A gap of 1-2 mm is left between the inner right side wall of the dovetail groove and the right side of the dovetail block (711).

4. The scraper assembly for a self-cleaning filter according to claim 3, characterized in that: The right side of the first fixing block (611) is provided with a plurality of first circular through holes that pass through the first fixing block (611) and the second fixing block (612) from top to bottom. The right side of the scraper (7) is provided with a plurality of second circular through holes that correspond to the first circular through holes from top to bottom. The arc-shaped groove sidewall of each scraper (7) is provided with a plurality of circular placement grooves corresponding to the second circular through holes. Each placement groove is provided with a first nut (613). Each first circular through hole is provided with a first bolt (614). Each first bolt (614) is threadedly connected to its corresponding first nut (613).

5. A scraper assembly for a self-cleaning filter according to claim 4, characterized in that: The right side of the arc-shaped groove of the scraper (7) is flush with the left side of the first fixing block (611).

6. A scraper assembly for a self-cleaning filter according to claim 4, characterized in that: The first fixing block (611) has a sliding groove on its right side, and the second fixing block (612) is located in the sliding groove. The right side of the second fixing block (612) has a plurality of third circular through holes arranged from top to bottom. The left side wall inside the sliding groove of the first fixing block (611) has circular grooves arranged from top to bottom corresponding to the plurality of third circular through holes. The right side of the second fixing block (612) is fixed with a second nut (615) corresponding to a number of third circular through holes. Each second nut (615) is threaded with a second bolt (616). The thread of each second bolt (616) is inserted into its corresponding circular groove. The thread of each second bolt (616) abuts against the inner left side wall of its corresponding circular groove.

7. A scraper assembly for a self-cleaning filter according to claim 6, characterized in that: The front and rear sides of the inner left side wall of the chute are provided with a first chamfer; The left side of the second fixing block (612) has a second chamfer on the front and rear sides.

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