A drum screen gritter

Abstract

This invention relates to a rotary drum bar screen cleaner, comprising an annular screen frame, a rotating shaft, a slag discharge device, a spiral conveyor, a slag removal device, and a power unit; the slag discharge device includes a connecting cylinder and a filter hopper fixedly connected to the connecting cylinder, the connecting cylinder having a slag outlet, and the filter hopper having a slag inlet, the inner cavity of the connecting cylinder communicating with the inner cavity of the filter hopper, the filter hopper being located within the inner cavity of the annular screen frame; the annular screen frame has a fixed connecting section and a rotating connecting section at each end, the fixed connecting section being fixedly connected to the rotating shaft. The rotating connecting section is rotatably connected to the connecting cylinder; the rotating shaft passes through the inner cavity of the connecting cylinder and the inner cavity of the filter ash hopper, and extends out of the inner cavity of the annular grid frame; the spiral conveyor is set on the rotating shaft, with one end of the spiral conveyor located at the ash outlet and the other end located at the ash inlet; the ash removal device includes a ash removal brush and a connecting piece, the ash removal brush is located at the top of the annular grid frame and abuts against the annular grid frame, one end of the connecting piece is connected to the ash removal brush, and the other end is fixedly connected to the ash outlet device; the power device is drivenly connected to the rotating shaft.

Description

Technical Field

[0001] This invention relates to the field of cleaning machine technology, specifically to a rotary drum bar screen cleaning machine. Background Technology

[0002] Rotary drum bar screens can intercept floating, suspended, and sedimentary matter in sewage, effectively separating and cleaning the sewage from its solids. Therefore, they are widely used in urban sewage treatment and industrial wastewater treatment.

[0003] Traditional rotary drum bar screens consist of a bar screen, a rake device, and a conveying device. During operation, filter residue is trapped within the bar screen. Most of the residue is transported out via the conveying device, while a small portion adheres to the bar screen. The cleaning teeth on the rake device penetrate the gaps between the bar screens and remove the residue adhering to the bar screen into the conveying device. However, in actual use, it has been found that filter residue not only adheres to the bar screen but also to the cleaning teeth. If not removed promptly, this will affect the cleaning ability of the rake device, resulting in a large amount of residual filter residue in the bar screen, thus impacting the decontamination capacity of the rotary drum bar screen. Furthermore, it can easily cause jamming between the bar screen and the cleaning teeth, severely hindering the normal operation of the rotary drum bar screen and even causing malfunctions such as blockage and frequent error messages.

[0004] The filter residue adhering to the cleaning teeth is difficult to completely remove by the mechanism of the rotary drum bar screen itself, and often requires manual cleaning by workers. However, manual cleaning of the cleaning teeth is costly, time-consuming, and labor-intensive, and there are also certain safety risks for workers. For example, the rotary drum bar screen is usually set up in a container box and is in a fully enclosed state. A certain amount of hydrogen sulfide accumulates in the closed environment of the container box, and workers may be at risk of poisoning when cleaning. When workers operate tools such as long hooks to clean the cleaning teeth, they need to lean forward to exert force, and if they operate improperly, they may fall or tip over. There is also a certain risk of electric shock when cleaning the cleaning teeth on rainy days without warning. Summary of the Invention

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a rotary drum bar screen cleaner that can effectively and timely clean the filter residue on the rotary drum bar screen, reduce the frequency of failures and maintenance, and ensure the safety of workers.

[0006] To achieve the above objectives, the present invention provides a rotary drum bar screen, comprising an annular screen frame, a rotating shaft, a slag discharge device, a spiral conveyor, a slag removal device, and a power unit; the slag discharge device includes a connecting cylinder and a filter hopper fixedly connected to the connecting cylinder, the connecting cylinder having a slag outlet, and the filter hopper having a slag inlet, the inner cavity of the connecting cylinder communicating with the inner cavity of the filter hopper, the filter hopper being located within the inner cavity of the annular screen frame; the annular screen frame has a fixed connecting section and a rotating connecting section at its two ends, the fixed connecting section being fixedly connected to... The rotating connecting section is rotatably connected to the connecting cylinder on the rotating shaft; the rotating shaft passes through the inner cavity of the connecting cylinder and the inner cavity of the filter ash hopper, and extends out of the inner cavity of the annular grid frame; the spiral conveyor is arranged on the rotating shaft, with one end of the spiral conveyor located at the ash outlet and the other end located at the ash inlet; the ash removal device includes a ash removal brush and a connecting piece, the ash removal brush is located at the top of the annular grid frame and abuts against the annular grid frame, one end of the connecting piece is connected to the ash removal brush, and the other end is fixedly connected to the ash outlet device; the power device is drivenly connected to the rotating shaft.

[0007] Furthermore, the slag removal device also includes a flushing water mechanism and a fixing component. The flushing water mechanism is provided with multiple water outlets facing the slag removal brush. One end of the fixing component is connected to the flushing water mechanism, and the other end is fixedly connected to the connecting cylinder.

[0008] Furthermore, the connecting cylinder is also equipped with a flushing water solenoid valve for controlling the flushing water mechanism.

[0009] Furthermore, it also includes a grid frame fixing bracket, in which the annular grid frame is fixedly installed.

[0010] Furthermore, the frame fixing bracket is made of aluminum alloy.

[0011] Furthermore, the axis of the rotating shaft, the axis of the connecting cylinder, and the axis of the annular grid frame all coincide.

[0012] Furthermore, the angle between the axis of the rotating shaft and the horizontal plane is α, where 33° < α < 35°.

[0013] As described above, the rotary drum bar screen cleaner of the present invention has the following beneficial effects:

[0014] By setting up an annular grid frame, a rotating shaft, a slag discharge device, and a power device, when the power device drives the rotating shaft to rotate, the rotating shaft can drive the annular grid frame to rotate relative to the connecting cylinder. By setting up a slag removal device, when the annular grid frame rotates, the friction between the annular grid frame and the slag removal brush allows the slag removal brush to scrape off the filter residue adhering to the annular grid frame. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of the rotary drum bar screen cleaner of the present invention.

[0016] Figure 2 for Figure 1 View A in the diagram.

[0017] Explanation of icon numbers

[0018] 1. Annular grid frame, 2. Rotating shaft, 3. Connecting cylinder, 301. Slag outlet, 4. Filter slag hopper, 401. Slag inlet, 5. Screw conveyor, 6. Slag removal device, 601. Slag removal brush, 602. Flushing water mechanism, 603. Flushing water solenoid valve, 7. Power unit, 8. Grid frame fixing frame. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] See Figures 1 to 2This invention provides a rotary drum bar screen cleaner, comprising an annular grid frame 1, a rotating shaft 2, a slag discharge device, a spiral conveyor 5, a slag removal device 6, and a power unit 7; the slag discharge device includes a connecting cylinder 3 and a filter slag hopper 4 fixedly connected to the connecting cylinder 3, the connecting cylinder 3 being provided with a slag outlet 301, and the filter slag hopper 4 being provided with a slag inlet 401, the inner cavity of the connecting cylinder 3 communicating with the inner cavity of the filter slag hopper 4, the filter slag hopper 4 being located in the inner cavity of the annular grid frame 1; the two ends of the annular grid frame 1 are respectively provided with a fixed connecting section and a rotating connecting section, the fixed connecting section being fixedly connected to the rotating shaft 2, preferably, the fixed connecting section... The section includes a radial connecting plate, both ends of which are fixed to the annular grid frame 1. A rotating shaft 2 passes through the radial connecting plate and is fixedly connected to it. The rotating connecting section is rotatably connected to the connecting cylinder 3. Preferably, the rotating connecting section includes a circular baffle and multiple rollers disposed on the outer edge of the circular baffle. The connecting cylinder 3 and the filter hopper 4 are respectively fixed to the two sides of the circular baffle. The outer circumferential surfaces of the rollers abut against the inner cavity of the annular grid frame 1, allowing the annular grid frame 1 to rotate relative to the circular baffle. The rotating shaft 2 passes through the inner cavity of the connecting cylinder 3 and the inner cavity of the filter hopper 4, and extends out of the inner cavity of the annular grid frame 1. The conveyor 5 is mounted on the rotating shaft 2, with one end of the spiral conveyor 5 located at the slag outlet 301 and the other end located at the slag inlet 401. The slag removal device 6 includes a slag removal brush 601 and a connecting member. The slag removal brush 601 is located on the top of the annular grid frame 1 and abuts against the annular grid frame 1. One end of the connecting member is fixedly connected to the slag removal brush 601, and the other end is fixedly connected to the slag outlet device. Preferably, slag removal brushes 601 are provided on both the outer side and the inner cavity of the annular grid frame 1. The slag removal brushes 601 located on the outer side of the annular grid frame 1 abut against the outer circumferential surface of the annular grid frame 1, and one end of the connecting member is fixedly connected to the slag removal brush 601. One end of the connector is fixedly connected to the connecting cylinder 3. The slag removal brush 601, which is set in the inner cavity of the annular grid frame 1, is abutted against the inner wall of the annular grid frame 1. One end of the connector is connected to the slag removal brush 601, and the other end is fixedly connected to the filter cake hopper 4. Preferably, the slag removal brush 601 is set as a detachable structure, which facilitates quick installation and disassembly between the slag removal brush 601 and the connector, and also facilitates the cleaning of the slag removal brush 601 by the staff, thus protecting the safety of the staff to a certain extent. The power unit 7 is connected to the rotating shaft 2 for transmission. Preferably, the power unit 7 is fixedly set at the end of the connecting cylinder 3 away from the filter cake hopper 4.

[0024] The basic working principle of the rotary drum bar screen cleaner involved in this invention is as follows: When the rotary drum bar screen cleaner is working, the power unit 7 can drive the rotating shaft 2 to rotate. The rotating shaft 2 can drive the annular screen frame 1 to rotate along its own axis through the fixed connecting section. The annular screen frame 1 can rotate relative to the connecting cylinder 3 through the rotating connecting section. Since the slag removal brush 601 is fixedly installed on the slag discharge device and does not rotate with the annular screen frame 1, when the annular screen frame 1 continues to rotate, the slag removal brush 601 can continuously scrape off the filter slag adhering to the annular screen frame 1. The filter slag falls into the inner cavity of the filter slag hopper 4 through the slag inlet 401, and the rotating... While shaft 2 drives the annular grid frame 1 to rotate along its own axis, it also drives the spiral conveyor 5 to rotate. The filter residue is transported to the slag outlet 301 through the spiral conveyor 5. By enabling the rotating drum grid to rotate along its own axis, on the one hand, it can avoid the jamming phenomenon between the rotating drum grid and traditional cleaning teeth and other mechanisms, completely solve the problems of traditional tooth rake jamming and blockage, and prevent the frequent occurrence of failures caused by the inability to remove filter residue in time. On the other hand, it can greatly improve work efficiency, effectively ensure the work safety of workers, and significantly reduce labor costs and maintenance expenses.

[0025] See Figures 1 to 2 The present invention will be further described below with reference to a specific embodiment:

[0026] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the slag removal device 6 also includes a flushing water mechanism 602 and a fixing component. The flushing water mechanism 602 is provided with multiple water outlets facing the slag removal brush 601. One end of the fixing component is connected to the flushing water mechanism 602, and the other end is fixedly connected to the connecting cylinder 3. The flushing water mechanism 602 can remove the filter residue adhering to the slag removal brush 601, ensuring that the slag removal brush 601 always maintains efficient slag removal. At the same time, it can also facilitate the rotary drum bar screen cleaner to be set as an integrated closed structure, enabling the rotary drum bar screen cleaner to perform self-cleaning. This eliminates the need for staff to clean the filter residue adhering to the slag removal brush 601 on-site. They only need to perform routine inspections and maintenance according to the operating time, which greatly reduces the workload of staff and further solves the safety hazards caused by traditional manual on-site cleaning of filter residue.

[0027] In this embodiment, see Figure 1 As a preferred design, the connecting cylinder 3 is also equipped with a flushing water solenoid valve 603 for controlling the flushing water mechanism 602. The flushing water solenoid valve 603 enables the staff to remotely control the opening, closing and output water volume of the flushing water mechanism 602, which is convenient for the staff to handle remotely, and is easy to adjust and has a fast response speed.

[0028] In this embodiment, see Figure 1 and Figure 2 As a preferred design, it also includes a grid frame fixing frame 8, in which the annular grid frame 1 is fixedly installed. The grid frame fixing frame 8 can support the annular grid frame 1 and other mechanisms installed on the annular grid frame 1, thereby improving the stability of the overall structure.

[0029] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the grid frame fixing bracket 8 is made of aluminum alloy, which has good strength and corrosion resistance, and can improve the service life of the grid frame fixing bracket 8.

[0030] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the axis of the rotating shaft 2, the axis of the connecting cylinder 3, and the axis of the annular grid frame 1 are all coincident. When the rotary drum bar screen cleaner is running, it is easy for the centrifugal force system of the rotating shaft 2, the connecting cylinder 3, and the annular grid frame 1 to reach a balance, thereby minimizing the vibration generated during operation.

[0031] In this embodiment, see Figure 1 As a preferred design, the angle between the axis of the rotating shaft 2 and the horizontal plane is α, where 33° < α < 35°. In traditional rotary drum bar screens, the angle between the bar screen and the horizontal plane is 35°, making it difficult to separate dirt smaller than the gaps in the bar screen. Therefore, by setting the angle α between the axis of the rotating shaft 2 and the horizontal plane to be between 33° and 35°, the angle between the annular bar screen 1 and the water flow is reduced to a certain extent, allowing dirt smaller than the gaps in the annular bar screen 1 to be separated from the wastewater by the annular bar screen 1.

[0032] As described above, the rotary drum bar screen cleaner of the present invention has the following beneficial effects:

[0033] By setting up an annular grid frame 1, a rotating shaft 2, a slag discharge device, and a power device 7, when the power device 7 drives the rotating shaft 2 to rotate, the rotating shaft 2 can drive the annular grid frame 1 to rotate relative to the connecting cylinder 3. By setting up a slag removal device 6, when the annular grid frame 1 rotates, the annular grid frame 1 rubs against the slag removal brush 601, so that the slag removal brush 601 can scrape off the filter residue adhering to the annular grid frame 1.

[0034] In summary, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A rotary drum bar screen cleaner, characterized in that: The system includes an annular grid frame (1), a rotating shaft (2), a slag discharge device, a spiral conveyor (5), a slag removal device (6), and a power unit (7). The slag discharge device includes a connecting cylinder (3) and a filter hopper (4) fixedly connected to the connecting cylinder (3). The connecting cylinder (3) is provided with a slag outlet (301), and the filter hopper (4) is provided with a slag inlet (401). The inner cavity of the connecting cylinder (3) is connected to the inner cavity of the filter hopper (4), and the filter hopper (4) is located in the inner cavity of the annular grid frame (1). The two ends of the annular grid frame (1) are respectively provided with a fixed connecting section and a rotating connecting section. The fixed connecting section is fixedly connected to the rotating shaft (2), and the rotating connecting section is connected to the connecting cylinder (3). The connecting cylinder (3) is rotatably connected; the rotating shaft (2) passes through the inner cavity of the connecting cylinder (3) and the inner cavity of the filter slag hopper (4), and extends out of the inner cavity of the annular grid frame (1); the spiral conveyor (5) is set on the rotating shaft (2), and one end of the spiral conveyor (5) is located at the slag outlet (301), and the other end is located at the slag inlet (401); the slag removal device (6) includes a slag removal brush (601) and a connecting piece, the slag removal brush (601) is located at the top of the annular grid frame (1) and abuts against the annular grid frame (1), one end of the connecting piece is connected to the slag removal brush (601), and the other end is fixedly connected to the slag outlet device; the power device (7) is drivenly connected to the rotating shaft (2).

2. The rotary drum bar screen cleaner according to claim 1, characterized in that: The slag removal device (6) also includes a flushing water mechanism (602) and a fixing member. The flushing water mechanism (602) is provided with multiple water outlets facing the slag removal brush (601). One end of the fixing member is connected to the flushing water mechanism (602), and the other end is fixedly connected to the connecting cylinder (3).

3. The rotary drum bar screen cleaner according to claim 2, characterized in that: The connecting cylinder (3) is also provided with a flushing water solenoid valve (603) for controlling the flushing water mechanism (602).

4. The rotary drum bar screen cleaner according to claim 1, characterized in that: It also includes a grid frame fixing bracket (8), in which the annular grid frame (1) is fixedly installed.

5. The rotary drum bar screen cleaner according to claim 4, characterized in that: The frame fixing bracket (8) is made of aluminum alloy.

6. The rotary drum bar screen cleaner according to claim 1, characterized in that: The axis of the rotating shaft (2), the axis of the connecting cylinder (3), and the axis of the annular grid frame (1) all coincide.

7. The rotary drum bar screen cleaner according to claim 1, characterized in that: The angle between the axis of the rotating shaft (2) and the horizontal plane is α, where 33° < α < 35°.

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