A new type of rotary bar screen

Abstract

This utility model discloses a novel rotary bar screen cleaner, belonging to the field of wastewater treatment technology. It includes a drive unit, frame, main shaft, slag support plate, and bar screens, as well as a traction chain, rake support, and rake plates. The original rake shaft, fixed to the traction chain, is replaced with detachable rake plates to meet the needs of convenient maintenance and efficient wastewater treatment. The original rake teeth were only 3-5mm thick, which could easily scrape against the bar screens and cause deformation when the amount of slag was large. The existing rake teeth can reach a maximum thickness of 20mm, greatly improving the service life of the equipment. In this utility model, the rake plates are connected to the rake support via bolts and other fasteners, and the rake support is connected to the traction chain. When a section of the rake plate needs to be replaced, only the fasteners between it and the rake support need to be removed. This saves maintenance time and reduces maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to a novel rotary bar screen cleaner. Background Technology

[0002] Rotary bar screens are mainly used in the intake channels (wells) of urban sewage treatment plants, waterworks, and stormwater pumping stations to intercept floating debris in the water, ensuring the normal operation of water pumps and subsequent water supply. Figure 1 , Figure 2 and Figure 3 As shown, the rotary bar screen consists of a drive unit 1, a frame 2, a main shaft 3, a slag support plate 4, bar screens 5, rake teeth 6, rake shafts 7, and a traction chain 8. Driven by an electric motor and decelerated by a reducer, the traction chain 8 moves. The rake shafts, fixed on the traction chain 8, move to the bottom behind the screen, pass through the guide wheel, and then flip to the water-facing position in front of the screen to continue moving and insert into the bar screens 5. This lifts the debris intercepted in front of the screen and discharges it through the four slag outlets of the slag support plate into the conveyor or slag car behind the screen, completing the cleaning process. The liquid flows through the gaps in the bar screens, and the entire operation is a continuous cycle.

[0003] The conventional structure of a rotary bar screen cleaner involves a rake shaft 7 connected to a traction chain 8 via bolts, with rake teeth 6 fixed to the rake shaft 7. The rake shaft 7 rotates with the traction chain 8, intercepting and lifting debris. However, in practical applications, especially under conditions with large amounts of screenings, such as weeds, a significant amount of screenings enters between the bar screen 5 and the rake teeth 6. The rake teeth 6 are prone to scraping against the bar screen 5, causing deformation. When a rake shaft 7 or rake tooth 6 is damaged and requires repair, the entire machine must be stopped and the rake shaft 7 removed from the traction chain 8, resulting in high maintenance costs, low efficiency, and reduced equipment lifespan. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a novel rotary bar screen cleaner, which replaces the toothed rake shaft, which was originally fixed on the traction chain, with a detachable toothed rake plate to meet the needs of convenient maintenance and efficient sewage treatment.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel rotary bar screen includes a drive unit, a frame, a main shaft, a slag-collecting plate, and bar screens, as well as a traction chain, a rake support, and rake plates. The drive unit is located on the top of the frame, the slag-collecting plate and bar screens are mounted on the frame, the drive unit is connected to the main shaft, the traction chain is connected to the main shaft, the rake support is connected to the traction chain, and the rake plates are connected to the rake support.

[0007] As a further preferred embodiment of the novel rotary bar screen cleaning machine of this utility model, the traction chain is connected to the main shaft by a key.

[0008] As a further preferred embodiment of the novel rotary bar screen cleaning machine of this utility model, the thickness of the toothed rake plate is less than or equal to 20mm.

[0009] As a further preferred embodiment of the novel rotary bar screen cleaning machine of this utility model, the toothed rake plate is connected to the toothed rake bracket by fasteners.

[0010] As a further preferred embodiment of the novel rotary bar screen cleaning machine of this utility model, the toothed rake bracket and the traction chain are detachably fixedly connected by bolts.

[0011] This utility model has the following beneficial effects:

[0012] 1. This utility model discloses a novel rotary bar screen cleaning machine, which includes a drive device, a frame, a main shaft, a slag collection plate, and bar screens, as well as a traction chain, a rake bracket, and a rake plate; the rake shaft, which was originally fixed on the traction chain, is replaced with a detachable rake plate to meet the needs of convenient maintenance and efficient sewage treatment.

[0013] 2. The original rake teeth of this utility model were only 3-5mm thick. When the amount of screenings was large, the rake teeth were easy to scrape the screening bars and deform. The existing rake teeth can be up to 20mm thick, which greatly improves the service life of the equipment.

[0014] 3. The toothed rake plate of this utility model is connected to the toothed rake bracket by bolts and other fasteners. The toothed rake bracket is connected to the traction chain. When a section of the toothed rake plate needs to be replaced, it is only necessary to remove the fasteners between it and the toothed rake bracket. This saves maintenance time and reduces maintenance costs. Attached Figure Description

[0015] Figure 1 This is a front view of the external structure of the rotary bar screen cleaner of this utility model;

[0016] Figure 2 These are the front and side views of the external structure of the rotary bar screen cleaner of this utility model;

[0017] Figure 3 This is a magnified view of a portion of the original toothed rake shaft;

[0018] Figure 4 This is a magnified view of a portion of the new type of toothed rake plate;

[0019] The labels in the diagram are as follows:

[0020] 1-Drive unit; 2-Frame; 3-Main shaft; 4-Slag tray; 5-Grate bar; 6-Rake teeth; 7-Rake shaft; 8-Traction chain; 9-Rake bracket; 10-Rake plate. Detailed Implementation

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

[0022] This utility model discloses a novel rotary bar screen cleaning machine, such as... Figure 1 , Figure 2 and Figure 4 As shown, the assembly includes a drive unit 1, a frame 2, a main shaft 3, a slag-collecting plate 4, grid bars 5, a traction chain 8, a toothed rake bracket 9, and a toothed rake plate 10. The drive unit 1 is located on top of the frame 2, and the slag-collecting plate 4 and grid bars 5 are mounted on the frame 2. The drive unit 1 and the main shaft 3 are connected for transmission. The traction chain 8 is connected to the main shaft 3, the toothed rake bracket 9 is connected to the traction chain 8, and the toothed rake plate 10 is connected to the toothed rake bracket 9. The traction chain 8 is connected to the main shaft 3 by a key, and the toothed rake plate 10 is connected to the toothed rake bracket 9 by fasteners. The toothed rake bracket 9 and the traction chain 8 are detachably fixed together by bolts.

[0023] Working principle: Driven by an electric motor and decelerated by a reducer, the traction chain 8 moves. The rake plate 10 and the rake bracket 9 are connected by bolts, and the rake bracket 9 is also connected to the traction chain 8 by bolts. The rake bracket 9, fixed on the traction chain 8, moves to the bottom behind the screen, passes the guide wheel, flips to the water-facing position in front of the screen, and continues to move into the screen bars 5. It lifts the debris intercepted in front of the screen and discharges it through the four slag outlets of the slag tray into the conveyor or slag car behind the screen, completing the decontamination process. The liquid flows through the gaps in the screen bars. The entire working process is continuous and cyclical. When the rake is deformed and needs repair or replacement, simply remove the bolts between the rake plate 10 and the rake bracket 9, saving maintenance time, reducing maintenance costs, and extending the service life of the equipment.

[0024] The original rake teeth were only 3-5mm thick. When the amount of screenings was large, the rake teeth easily scraped against the screen bars, causing deformation. This new invention features rake teeth with a maximum thickness of 20mm, significantly improving the equipment's service life. The rake plates are connected to the rake support frame via bolts and other fasteners. The rake support frame is connected to the traction chain. When a section of the rake plate needs replacement, simply remove the fasteners between it and the rake support frame. This saves maintenance time and reduces maintenance costs.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel rotary bar screen cleaning machine, characterized in that: It includes a drive unit (1), a frame (2), a main shaft (3), a slag tray (4), and grid bars (5), and also includes a traction chain (8), a toothed rake bracket (9), and a toothed rake plate (10); the drive unit (1) is located on the top of the frame (2), the slag tray (4) and the grid bars (5) are located on the frame (2), the drive unit (1) and the main shaft (3) are connected in a transmission, the traction chain (8) is connected to the main shaft (3), the toothed rake bracket (9) is connected to the traction chain (8), and the toothed rake plate (10) is connected to the toothed rake bracket (9).

2. The novel rotary bar screen cleaner according to claim 1, characterized in that: The traction chain (8) is connected to the main shaft (3) by a key.

3. A novel rotary bar screen cleaner according to claim 1, characterized in that: The thickness of the toothed rake plate is less than or equal to 20 mm.

4. A novel rotary bar screen cleaner according to claim 1, characterized in that: The toothed rake plate (10) is connected to the toothed rake bracket (9) by fasteners.

5. A novel rotary bar screen cleaner according to claim 1, characterized in that: The rake bracket (9) and the traction chain (8) are detachably and fixedly connected by bolts.

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