Filter cloth flushing structure of sludge dewatering machine

Abstract

The utility model discloses a filter cloth flushing structure of a sludge dewatering machine, which comprises a conveying filter belt arranged on a driving roller, a flushing water pipe is arranged on the inner side of the conveying filter belt in a penetrating manner, and the flushing water pipe extends along the direction parallel to the width direction of the conveying filter belt. A plurality of nozzles capable of spraying water downwards are arranged at the bottom of a pipe body of the flushing water pipe at intervals in the extending direction of the flushing water pipe, supporting sliding seats which are used for supporting the flushing water pipe and are in sliding fit with the flushing water pipe are arranged at the positions, corresponding to the flushing water pipe, of the two sides of the conveying filter belt, and one end of the flushing water pipe is a closed end; one end of the flushing water pipe is connected with a closed end, the other end of the flushing water pipe is connected with a water supply pipe, and a reciprocating driving device is arranged on the side where the closed end of the flushing water pipe is located and can act on the flushing water pipe to drive the flushing water pipe to move back and forth in the center line direction of the flushing water pipe; and the washing track lines of all the nozzles to the return section of the conveying filter belt can cover the distance of the conveying filter belt in the width direction.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically to a filter cloth rinsing structure for a sludge dewatering machine. Background Technology

[0002] Sludge is an inevitable byproduct of wastewater treatment plants and sewage treatment facilities. If sludge is not properly treated and disposed of, it will directly cause secondary pollution to water bodies and the atmosphere, posing a serious threat to the ecological environment and human activities. Therefore, sludge treatment is handled with great care. Common sludge treatment processes include sludge dewatering, a crucial step in wastewater treatment. Dewatering aims to reduce the moisture content of sludge through physical, chemical, or biological methods, facilitating subsequent treatment such as transportation, landfill, incineration, or resource utilization. Sludge dewatering machines are key equipment in wastewater and solid waste treatment processes for reducing the moisture content of sludge. They mechanically separate water from the sludge, reducing its volume and weight for easier subsequent treatment or disposal. In sludge conveyor belts, pressure rollers force the water through the belt and discharge the sludge cake, which is then retained on the belt and enters the next stage at the end of the conveyor. However, some of the sludge cake will stick to the conveyor belt. After circulating through the conveyor belt, it will return to the conveyor section. This part of the sludge cake will affect the spreading of new sludge on the conveyor belt, thus affecting the sludge treatment capacity and efficiency.

[0003] To address this issue, a flushing water pipe is typically installed inside the conveyor belt. Multiple nozzles are spaced at intervals along the bottom of the flushing pipe, and the sprayed water passes through the filter holes on the return section of the conveyor belt, washing away the sludge cake adhering to the belt. However, because there is a distance between adjacent nozzles, the angle of the sprayed water results in relatively poor flushing power for the area between two nozzles on the return section of the conveyor belt. Consequently, some adhered sludge cake may not be completely washed away, affecting the sludge treatment capacity and efficiency. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a filter cloth rinsing structure for a sludge dewatering machine that can clean the adhering mud cake on the return section of the conveyor filter belt, thereby improving the sludge dewatering capacity and efficiency.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A filter cloth rinsing structure for a sludge dewatering machine includes a conveyor filter belt mounted on a drive roller. A rinsing water pipe is threaded through the inner side of the conveyor filter belt and extends parallel to the width of the conveyor filter belt. Multiple nozzles capable of spraying water downwards are spaced at intervals along the extension direction of the rinsing water pipe at the bottom of the pipe. Support slides for supporting and slidingly engaging with the rinsing water pipe are provided on both sides of the conveyor filter belt, corresponding to the positions of the rinsing water pipe. One end of the rinsing water pipe is closed, and the other end is connected to a water supply pipe. A reciprocating drive device is located on the side of the closed end of the rinsing water pipe. The reciprocating drive device can act on the rinsing water pipe to drive it to move back and forth along the centerline of the rinsing water pipe. When the rinsing water pipe moves back and forth, the rinsing trajectory line of all the nozzles on the return section of the conveyor filter belt can cover the distance in the width direction of the conveyor filter belt.

[0007] In this invention, while the rinsing water pipe is spraying water, the reciprocating drive device can also drive the rinsing water pipe to move back and forth along its center line, thereby changing the relative position between the nozzle and the return section of the conveyor belt in real time, avoiding the generation of rinsing dead angles, and rinsing the return section of the conveyor belt more thoroughly.

[0008] As an optimization, the nozzle is a fan-shaped nozzle, and the plane in which the fan-shaped water flow sprayed by the nozzle is located is perpendicular to the plane in which the return section of the conveyor belt is located.

[0009] As an optimization, the reciprocating drive device includes a drive motor and a crank-slider assembly, with the output end of the drive motor connected to the closed end of the flushing water pipe via the crank-slider assembly. The transmission structure is simple and reliable.

[0010] As an optimization, a backwashing plate is provided below the conveyor belt, positioned vertically opposite to the flushing water pipe. The backwashing plate is horizontal and extends parallel to the centerline of the flushing water pipe, with both ends extending beyond the width of the conveyor belt. The upper surface of the backwashing plate is covered with numerous protrusions, and the distance between the lower surface of the return section of the conveyor belt and these protrusions is no greater than 4 cm. After passing through the filter holes on the filter belt, the flushing water impacts the protrusions on the backwashing plate, causing them to change the direction of the water flow and impact the filter belt above, further enhancing the flushing effect. The distance between the lower conveying surface of the conveyor belt and the protrusions is set according to the thickness of the compressed mud cake to avoid interference from the protrusions with the mud cake adhering to the conveyor belt, while also ensuring the distance is not too large, which would affect the backwashing effect.

[0011] As an optimization, the protrusion is a hemispherical protrusion or a conical protrusion.

[0012] As an optimization, the top of the support slide is provided with a limiting groove extending parallel to the length of the flushing water pipe. The limiting groove is a through groove. A roller is horizontally arranged above the bottom of the limiting groove. The center line of the roller is perpendicular to the center line of the flushing water pipe. The two ends of the roller are rotatably connected to the bearings fixed to the bottom of the limiting groove. The flushing water pipe passes through the limiting grooves on both sides and is placed on the two rollers respectively.

[0013] Compared with existing technologies, this utility model has a simple structure and eliminates the rinsing dead angle between the two nozzles by moving them, resulting in a cleaner rinsing of the conveyor belt and reducing the impact of sludge cake adhesion on sludge treatment efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the support slide in this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention and 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," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 based on the specific circumstances.

[0018] like Figure 1 and Figure 2 As shown, the filter cloth rinsing structure of the sludge dewatering machine in this specific embodiment includes a conveyor filter belt 1 set on the transmission roller. A rinsing water pipe 2 is passed through the inner side of the conveyor filter belt 1. The rinsing water pipe 2 extends in a direction parallel to the width of the conveyor filter belt 1. Multiple nozzles 3 capable of spraying water downwards are arranged at intervals at the bottom of the rinsing water pipe 2 along its extension direction. Support slides 4 for supporting the rinsing water pipe 2 and slidingly engaging with it are arranged on both sides of the conveyor filter belt 1 corresponding to the position of the rinsing water pipe 2. One end of the rinsing water pipe 2 is a closed end, and the other end is connected to a water supply pipe 5. A reciprocating drive device is arranged on the side where the closed end of the rinsing water pipe 2 is located. The reciprocating drive device can act on the rinsing water pipe 2 to drive the rinsing water pipe 2 to move back and forth along the center line of the rinsing water pipe 2. When the rinsing water pipe 2 moves back and forth, all the nozzles 3 can cover the distance in the width direction of the conveyor filter belt 1 for the rinsing trajectory line of the return section of the conveyor filter belt 1.

[0019] In this specific embodiment, the nozzle 3 is a fan-shaped nozzle, and the plane in which the fan-shaped water flow sprayed by the nozzle is located is perpendicular to the plane in which the return section of the conveyor filter belt 1 is located.

[0020] In this specific embodiment, the reciprocating drive device includes a drive motor 6 and a crank-slider assembly 7. The output end of the drive motor 6 is connected to the closed end of the flushing water pipe 2 through the crank-slider assembly 7.

[0021] In this specific embodiment, a backwash plate 8 is provided below the conveyor filter belt 1, which is vertically opposite to the flushing water pipe 2. The backwash plate 8 is horizontal and extends in a direction parallel to the center line of the flushing water pipe 2. The two ends of the backwash plate 8 extend out of the two ends of the width direction of the conveyor filter belt 1, and the upper surface of the backwash plate 8 is covered with a number of protrusions 9. The distance between the lower surface of the return section of the conveyor filter belt 1 and the protrusions 9 is no more than 4cm.

[0022] In this specific embodiment, the protrusion 9 is a hemispherical protrusion or a conical protrusion.

[0023] In this specific embodiment, the top of the support slide 4 is provided with a limiting slide groove extending parallel to the length direction of the flushing water pipe 2. The limiting slide groove is a through groove. A roller shaft 10 is horizontally arranged above the bottom of the limiting slide groove. The center line of the roller shaft 10 is perpendicular to the center line of the flushing water pipe 2. Both ends of the roller shaft 10 are rotatably connected to the bearing seat 11 fixed to the bottom of the limiting slide groove. The flushing water pipe 2 passes through the limiting slide grooves on both sides and is placed on the two roller shafts 10 respectively.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail can be made without departing from the spirit and scope of this utility model as defined in the appended claims.

Claims

1. A filter cloth rinsing structure for a sludge dewatering machine, comprising a conveyor filter belt mounted on a drive roller, a rinsing water pipe passing through the inner side of the conveyor filter belt, the rinsing water pipe extending parallel to the width direction of the conveyor filter belt, and a plurality of nozzles capable of spraying water downwards spaced at intervals along the extending direction of the rinsing water pipe at the bottom of the pipe body, characterized in that: On both sides of the conveyor belt, corresponding to the position of the flushing water pipe, there are support slides for supporting the flushing water pipe and sliding with it. One end of the flushing water pipe is closed, and the other end is connected to the water supply pipe. A reciprocating drive device is set on the side where the closed end of the flushing water pipe is located. The reciprocating drive device can act on the flushing water pipe to drive the flushing water pipe to move back and forth along the center line of the flushing water pipe. When the flushing water pipe moves back and forth, all the nozzles can cover the distance in the width direction of the conveyor belt for the flushing trajectory line of the return section of the conveyor belt.

2. The filter cloth rinsing structure of the sludge dewatering machine according to claim 1, characterized in that: The nozzle is a fan-shaped nozzle, and the plane in which the fan-shaped water stream is ejected is perpendicular to the plane in which the return section of the conveyor belt is located.

3. The filter cloth rinsing structure of the sludge dewatering machine according to claim 1, characterized in that: The reciprocating drive device includes a drive motor and a crank-slider assembly, and the output end of the drive motor is connected to the closed end of the flushing water pipe through the crank-slider assembly.

4. The filter cloth rinsing structure of the sludge dewatering machine according to claim 1, characterized in that: A backwash plate is provided below the conveyor filter belt, which is arranged vertically opposite to the flushing water pipe. The backwash plate is horizontal and extends in a direction parallel to the center line of the flushing water pipe. The two ends of the backwash plate extend out of the two ends of the width direction of the conveyor filter belt. The upper surface of the backwash plate is covered with several protrusions. The distance between the lower surface of the return section of the conveyor filter belt and the protrusions is no more than 4cm.

5. The filter cloth rinsing structure of the sludge dewatering machine according to claim 4, characterized in that: The protrusion is a hemispherical protrusion or a conical protrusion.

6. The filter cloth rinsing structure of the sludge dewatering machine according to claim 4, characterized in that: The top of the support slide is provided with a limiting groove extending parallel to the length of the flushing water pipe. The limiting groove is a through groove. A roller is horizontally arranged above the bottom of the limiting groove. The center line of the roller is perpendicular to the center line of the flushing water pipe. Both ends of the roller are rotatably connected to bearings fixed to the bottom of the limiting groove. The flushing water pipe passes through the limiting grooves on both sides and is placed on the two rollers respectively.

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