External spiral scraper of self-cleaning filter

Abstract

The utility model discloses an external spiral scraper of a self-cleaning filter, and particularly relates to the technical field of filters, the external spiral scraper comprises a barrel, a filter screen barrel is fixedly mounted in the barrel, a rotating shaft is rotatably connected to the position of a central shaft of the filter screen barrel in a limiting manner, and six groups of connecting plates are equidistantly arranged on the outer side wall of the rotating shaft; wherein first main shafts are fixedly arranged among three sets of connecting plates, second main shafts are fixedly arranged among the other three sets of connecting plates, six spiral scraper bodies are fixedly arranged on the outer side walls of the three second main shafts, and six sets of rotating sleeves are arranged on the outer side walls of the three sets of first main shafts in a limiting and rotating sleeving mode; a vertical scraper is fixedly connected to the outer side of each rotating sleeve, a torsional spring for extruding the vertical scrapers sleeves the outer side of the first main shaft, compensation is performed through the torsional springs, the situation that the vertical scrapers are attached to the filter screen barrel too tightly or too loosely is avoided, meanwhile, a high-abrasion-resistance material is arranged on the surface of a spiral scraper body, and the service life of the spiral scraper is prolonged. And the wear resistance of the spiral scraper body is improved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, to an external spiral scraper for a self-cleaning filter. Background Technology

[0002] Filters are an indispensable device in pipelines transporting media. They are usually installed at the inlet end of pressure reducing valves, pressure relief valves, level control valves, and other equipment. The existing structure consists of a shell, filter screen, main shaft, scraper, and control cabinet. The principle is that the scraper, which is equipped with a cleaning device inside the tank, activates when the impurities on the filter screen accumulate to a certain extent. The differential pressure then drives the internal scraper device to rotate, removing the impurities from the surface of the filter screen. The filter screen is automatically cleaned through intelligent control (time and differential pressure), and the impurities are discharged from the drain port. In the process of realizing this utility model, the inventor discovered the following problems with the existing technology.

[0003] However, the existing device currently suffers from significant wear on the filter screen, leading to a reduced lifespan for the filter screen. Additionally, the scraper used to remove impurities from the filter screen also experiences considerable wear.

[0004] Therefore, an external spiral scraper for a self-cleaning filter is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an external spiral scraper for a self-cleaning filter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an external spiral scraper for a self-cleaning filter, comprising a cylinder, a filter screen barrel fixedly installed inside the cylinder, a rotating shaft rotatably connected at the central axis of the filter screen barrel, six sets of connecting plates equally spaced on the outer wall of the rotating shaft, a first main shaft fixedly arranged between three sets of connecting plates, and a second main shaft fixedly arranged between the remaining three sets of connecting plates, six spiral scraper bodies equally spaced on the outer walls of the three second main shafts, six sets of rotating sleeves rotatably sleeved on the outer walls of the three sets of first main shafts, a vertical scraper fixedly connected to the outer side of each set of rotating sleeves, and a torsion spring for compressing the vertical scraper sleeved on the outer side of the first main shaft;

[0007] Each of the six connecting plates has an impurity deflector fixedly installed on its bottom wall, and all six impurity deflectors are in contact with the bottom wall of the filter screen barrel.

[0008] Preferably, the spiral scraper body and the vertical scraper are both tightly connected to the inner wall of the filter screen barrel. The bottom wall of the filter screen barrel is provided with a drain pipe that is connected to the filter screen barrel. The other end of the drain pipe is fixedly inserted through the bottom wall of the barrel, and a drain valve is provided on the drain pipe.

[0009] Preferably, the top of the cylinder is provided with an upper cover, and a mounting base is fixedly welded to the upper surface of the upper cover. A reducer is bolted to the mounting base, and a servo motor is provided on the outer wall of the reducer. The reducer is mounted on the output shaft of the servo motor, and the rotating shaft is rotatably mounted on the bottom wall of the reducer.

[0010] Preferably, the upper side wall of the cylinder is provided with a feed pipe connected and communicating with the cylinder, and the lower side wall of the cylinder is provided with a discharge pipe connected and communicating with the cylinder.

[0011] Preferably, six support legs are welded at equal intervals on the outer wall of the cylinder, and a pad is welded to the bottom end of each of the six support legs.

[0012] Preferably, two connecting seats are symmetrically arranged on the outer walls of the cylinder and the upper cover, and the upper and lower connecting seats are fixedly connected by bolts.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. Compared with the existing technology, a torsion spring is also provided between the vertical scraper and the first main shaft for compensation. This avoids the situation where the vertical scraper and the filter screen are not too tight or too loose. This would result in the filter screen being affected if the fit is too tight, while it would not be able to completely remove impurities from the surface of the filter screen if the fit is too loose. At the same time, a special material with high wear resistance is provided on the surface of the spiral scraper body, thereby improving the wear performance of the spiral scraper body.

[0015] 2. Compared with the existing technology, an impurity deflector is also installed on the bottom wall of each of the six connecting plates. By adding the impurity deflector, the impurities on the bottom wall of the filter screen can be moved and discharged through the drain pipe connected to the bottom wall of the filter screen. This ensures that impurities do not accumulate and the cleaning is more thorough. Attached Figure Description

[0016] Figure 1 This is a first-person perspective three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the filter screen barrel of this utility model.

[0018] Figure 3 This is a schematic diagram of a partial three-dimensional structure of the present invention.

[0019] Figure 4This is a two-dimensional structural diagram of the present invention from a second perspective.

[0020] The attached figures are labeled as follows: 1. Cylinder; 2. Upper cover; 3. Mounting base; 4. Reducer; 5. Servo motor; 6. Rotating shaft; 7. Connecting plate; 8. First main shaft; 9. Second main shaft; 10. Spiral scraper body; 11. Rotating sleeve; 12. Vertical scraper; 13. Torsion spring; 14. Impurity deflector; 15. Filter screen barrel; 16. Drain pipe; 17. Drain valve; 18. Feed pipe; 19. Discharge pipe; 20. Support leg. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] As attached Figures 1 to 4 The self-cleaning filter shown includes an external spiral scraper, comprising a cylinder 1, a filter screen 15 fixedly installed inside the cylinder 1, a rotating shaft 6 rotatably connected at the central axis of the filter screen 15, six sets of connecting plates 7 evenly arranged on the outer wall of the rotating shaft 6, a first main shaft 8 fixedly arranged between three sets of connecting plates 7, and a second main shaft 9 fixedly arranged between the remaining three sets of connecting plates 7, and six spiral scraper bodies 10 evenly arranged on the outer wall of the three second main shafts 9, each spiral scraper body 10 having a surface coated with a special material with high wear resistance, including but not limited to titanium nitride coating, aluminum titanium nitride coating, and diamond coating, thereby providing a certain degree of protection for the spiral scraper body 10, and six sets of rotating sleeves 11 rotatably sleeved on the outer wall of the three sets of first main shafts 8, each set of rotating sleeves 11 having a vertical scraper 12 fixedly connected to the outside, and a torsion spring 13 for compressing the vertical scraper 12 sleeved on the outside of the first main shafts 8;

[0024] Each of the six connecting plates 7 has an impurity deflector 14 fixedly installed on its bottom wall, and all six impurity deflectors 14 are in contact with the bottom wall of the filter screen barrel 15.

[0025] Specifically, when cleaning impurities on the filter screen barrel 15, the rotating shaft 6 drives the connecting plate 7 and the first main shaft 8 and second main shaft 9 connected to the connecting plate 7 to rotate. The rotating first main shaft 8 and second main shaft 9 respectively drive the spiral scraper body 10 and the vertical scraper 12 to rotate, thereby scraping and cleaning the impurities on the filter screen barrel 15. When the vertical scraper 12 scrapes the impurities on the filter screen barrel 15, the torsion spring 13 compensates to avoid the vertical scraper 12 and the filter screen barrel 15 being too tight or too loose. If the fit is too tight, it will affect the service life of the filter screen. If it is too loose, it will not be able to completely remove the impurities from the surface of the filter screen. At the same time, a special material with high wear resistance is provided on the surface of the spiral scraper body 10 to improve the wear performance of the spiral scraper body 10. Furthermore, due to its spiral characteristics, the spiral scraper body 10 can convey the scraped impurities downward.

[0026] Example 2

[0027] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 4 As shown, see the following description for details:

[0028] In a preferred embodiment, both the spiral scraper body 10 and the vertical scraper 12 are tightly connected to the inner wall of the filter screen barrel 15. The bottom wall of the filter screen barrel 15 is provided with a drain pipe 16 that is connected to the filter screen barrel 15. The other end of the drain pipe 16 is fixedly inserted through the bottom wall of the barrel 1, and a drain valve 17 is provided on the drain pipe 16. Furthermore, by adding the impurity-dispersing plate 14, the impurities on the bottom wall of the filter screen barrel 15 can be dispersed and discharged through the drain pipe 16 connected to the bottom wall of the filter screen barrel 15. This ensures that impurities do not accumulate and that cleaning is more thorough.

[0029] In a preferred embodiment, a top cover 2 is provided at the top of the cylinder 1, and a mounting base 3 is fixedly welded to the upper surface of the top cover 2. A reducer 4 is bolted to the mounting base 3, and a servo motor 5 is provided on the outer wall of the reducer 4. The reducer 4 is mounted on the output shaft of the servo motor 5, and a rotating shaft 6 is mounted on the bottom wall of the reducer 4 for limited rotation. Furthermore, under the action of the reducer 4, the servo motor 5 can slowly drive the rotating shaft 6 to rotate, and then the rotating shaft 6 slowly drives the first main shaft 8, the second main shaft 9, and the spiral scraper body 10 and the vertical scraper 12 respectively provided on the first main shaft 8 and the second main shaft 9 to clean the impurities on the filter screen barrel 15.

[0030] In a preferred embodiment, a feed pipe 18 connected to and communicating with the upper side wall of the cylinder 1 is provided, and a discharge pipe 19 connected to and communicating with the bottom side wall of the cylinder 1 is provided; furthermore, materials can be fed into the cylinder 1 through the feed pipe 18, and then discharged through the discharge pipe 19 after being filtered by the filter screen 15.

[0031] In a preferred embodiment, six support legs 20 are welded at equal intervals on the outer wall of the cylinder 1, and a pad is welded to the bottom of each of the six support legs 20; furthermore, the support legs 20 can be used to support and place the entire device.

[0032] In a preferred embodiment, two connecting seats are symmetrically arranged on the outer walls of both the cylinder 1 and the upper cover 2, and the upper and lower connecting seats are fixedly connected by bolts; furthermore, through the cooperation of the connecting seats and bolts, the upper cover 2 set at the top of the cylinder 1 can be stably installed and closed.

[0033] The working process of this utility model is as follows: First, the material is discharged into the cylinder 1 through the feed pipe 18, then the impurities in the material are intercepted by the filter screen 15, and finally discharged through the discharge pipe 19.

[0034] When it is necessary to clean and discharge impurities in the filter screen barrel 15, the servo motor 5 can slowly drive the rotating shaft 6 to rotate under the action of the reducer 4. Then, the rotating shaft 6 slowly drives the first main shaft 8, the second main shaft 9, and the spiral scraper body 10 and vertical scraper 12 respectively set on the first main shaft 8 and the second main shaft 9 to clean the impurities on the filter screen barrel 15. When the vertical scraper 12 scrapes the impurities on the filter screen barrel 15, the torsion spring 13 compensates to avoid the vertical scraper 12 and the filter screen barrel 15 being too tight or too loose. This would result in the filter screen being too tight, affecting its service life, or too loose, failing to completely remove impurities from the filter screen surface. At the same time, a special material with high wear resistance is provided on the surface of the spiral scraper body 10 to improve the wear performance of the spiral scraper body 10. The above is the working principle of the external spiral scraper of this self-cleaning filter.

Claims

1. An external spiral scraper for a self-cleaning filter, comprising a cylindrical body (1), characterized in that: A filter screen barrel (15) is fixedly installed inside the cylinder (1). A rotating shaft (6) is connected to the central axis of the filter screen barrel (15) for limiting rotation. Six sets of connecting plates (7) are arranged at equal distances on the outer side wall of the rotating shaft (6). A first main shaft (8) is fixedly arranged between three sets of connecting plates (7), and a second main shaft (9) is fixedly arranged between the other three sets of connecting plates (7). Six spiral scraper bodies (10) are fixedly arranged at equal distances on the outer side walls of the three second main shafts (9). Six sets of rotating sleeves (11) are fitted on the outer side walls of the three sets of first main shafts (8) for limiting rotation. A vertical scraper (12) is fixedly connected to the outside of each set of rotating sleeves (11), and a torsion spring (13) is fitted on the outside of the first main shaft (8) to compress the vertical scraper (12). Each of the six connecting plates (7) has an impurity deflector (14) fixedly installed on its bottom wall, and all six impurity deflectors (14) are in contact with the bottom wall of the filter screen barrel (15).

2. The external spiral scraper of a self-cleaning filter according to claim 1, characterized in that: The spiral scraper body (10) and the vertical scraper (12) are both closely connected to the inner wall of the filter screen barrel (15). The bottom wall of the filter screen barrel (15) is provided with a drain pipe (16) that is connected to the filter screen barrel (15). The other end of the drain pipe (16) is fixedly inserted through the bottom wall of the cylinder (1), and a drain valve (17) is provided on the drain pipe (16).

3. The external spiral scraper of a self-cleaning filter according to claim 1, characterized in that: The top of the cylinder (1) is provided with an upper cover (2), and an mounting base (3) is fixedly welded to the upper surface of the upper cover (2). A reducer (4) is bolted to the mounting base (3). A servo motor (5) is provided on the outer wall of the reducer (4). The reducer (4) is mounted on the output shaft of the servo motor (5). The rotating shaft (6) is limited to rotate and mounted on the bottom wall of the reducer (4).

4. The external spiral scraper of a self-cleaning filter according to claim 1, characterized in that: The upper side wall of the cylinder (1) is provided with a feed pipe (18) that is connected and communicates with the cylinder (1), and the lower side wall of the cylinder (1) is provided with a discharge pipe (19) that is connected and communicates with the cylinder (1).

5. The external spiral scraper of a self-cleaning filter according to claim 4, characterized in that: The outer wall of the cylinder (1) is welded with six support legs (20) at equal intervals, and a pad is welded to the bottom of each of the six support legs (20).

6. The external spiral scraper of a self-cleaning filter according to claim 1, characterized in that: The outer walls of the cylinder (1) and the upper cover (2) are symmetrically provided with two connecting seats, and the upper and lower connecting seats are fixedly connected by bolts.

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