Sludge impurity separation device

Abstract

The utility model discloses a sludge impurity separating device which comprises a sludge tank and a conveying device, the conveying device comprises a net-shaped conveying belt which is arranged above the sludge tank and is driven by a conveying roller, and a plurality of meshes capable of enabling sludge to pass through are fully distributed on the net-shaped conveying belt. Conveying supports which are fixed to the two sides of the sludge tank and rotationally connected with the conveying rollers are arranged at the two ends of the conveying rollers correspondingly, a sludge conveying pipe used for discharging sludge to the conveying inlet end of the net-shaped conveying belt is arranged above the net-shaped conveying belt, and a slag receiving device is arranged below the conveying outlet end of the net-shaped conveying belt. The sludge treatment device is simple in structure and convenient to maintain, sludge and impurities in the sludge are separated in a gravity mode, and meanwhile the sludge and the impurities are better collected respectively.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, specifically to a sludge impurity separation device. Background Technology

[0002] Sludge is a byproduct of wastewater treatment, consisting of solid sediments produced during the process. Sludge dewatering is a sludge treatment method that involves concentrating or digesting sludge to remove water, transforming it into semi-solid or solid sludge blocks. Energy conservation and emission reduction are among the fundamental national policies for my country's sustainable economic development. With the strengthening of water environment governance and protection efforts, sludge dewatering technologies are also continuously evolving.

[0003] Existing sludge thickening and dewatering technologies primarily involve directly pouring the sludge collected in the secondary sedimentation tank into a thickener for treatment. However, the sludge contains large-volume debris or large particles that easily adhere to the surface of the infiltration device, preventing the covered portion from performing normal infiltration and thus reducing the overall dewatering efficiency of the thickener. Simply installing a screen at the sludge delivery pipe outlet for filtration requires frequent shutdowns for cleaning, which also impacts overall processing 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 sludge impurity separation device that is simple in structure, easy to maintain, and convenient for separating impurities from sludge.

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

[0006] A sludge impurity separation device includes a sludge tank and a conveying device. The conveying device includes a mesh conveyor belt located above the sludge tank and driven by a conveying roller. The mesh conveyor belt is covered with a number of mesh holes that allow sludge to pass through. Conveying brackets are respectively provided at both ends of the conveying roller, which are fixed to both sides of the sludge tank and rotatably connected to the conveying roller. A sludge conveying pipe is provided above the mesh conveyor belt for discharging sludge to the conveying inlet end of the mesh conveyor belt. A sludge receiving device is provided below the conveying outlet end of the mesh conveyor belt.

[0007] In this invention, sludge is transported by a sludge conveying pipe and falls onto a mesh conveyor belt below. Due to the permeability of the sludge, it passes through the mesh openings of the conveyor belt and falls into the sludge pool below. Larger debris is intercepted by the mesh conveyor belt, which then stops its transport and falls from the outlet end into the slag receiving device below. This not only separates the sludge from the debris but also automatically cleans the debris from the mesh conveyor belt, making maintenance simpler and more convenient.

[0008] As an optimization, the mesh conveyor belt is inclined upwards from its inlet end towards its outlet end. This allows the sludge to pass through the mesh conveyor belt and fall downwards more effectively.

[0009] As an optimization, a scraper is provided at the conveyor outlet end of the mesh conveyor belt. Both ends of the scraper are fixedly connected to two conveyor supports located at the corresponding conveyor outlet end of the mesh conveyor belt. One side of the scraper is a scraping edge, which abuts against the lower surface of the conveyor outlet end of the mesh conveyor belt. Both ends of the scraping edge extend beyond the two sides of the mesh conveyor belt. This allows for the removal of debris adhering to the conveyor surface.

[0010] As an optimization, a movable bracket is also fixedly connected to the scraper. Vertically arranged movable sleeves are fixedly connected to both ends of the movable bracket along the width direction of the mesh conveyor belt. Connecting rods that can slide along the center line of the movable sleeve pass through the movable sleeves. The upper ends of the two connecting rods are fixedly connected to two conveying brackets located at the conveying outlet end of the mesh conveyor belt. An adjusting nut is threaded onto the connecting rod below the movable sleeve. A retaining spring is fitted onto the connecting rod between the movable sleeve and the adjusting nut. The two ends of the retaining spring abut against the movable sleeve and the adjusting nut, respectively, to provide spring force for the scraping edge of the scraper to abut against the lower surface of the conveying outlet end of the mesh conveyor belt. The spring force better keeps the scraping edge in contact with the conveying surface of the mesh conveyor belt.

[0011] As an optimization, the slag receiving device includes a slag pool and a slag receiving trough located between the slag pool and the mesh conveyor belt. The inlet end of the slag receiving trough is located below the conveying outlet end of the mesh conveyor belt, and the outlet end of the slag receiving trough is located above the slag pool. The slag receiving trough is inclined downwards with its upper outlet end facing downwards, and a slag trough support frame is provided at the bottom of the slag receiving trough for its support.

[0012] As an optimization, a slag plate is installed in the waste residue pool. The cross-sectional shape of the slag plate is consistent with the cross-sectional shape of the waste residue pool. The slag plate can slide vertically against the pool wall. A slag plate lifting device is installed at the bottom of the waste residue pool. A lifting rod extends from the top of the lifting device, and the top of the lifting rod is fixedly connected to the bottom of the slag plate to control the movement of the slag plate toward the pool opening. By lifting the slag plate upwards, it is convenient to clean debris from the waste residue pool.

[0013] As an optimization, the upper surface of the slag plate is an inclined surface, and a filtration zone is provided at the lowest point of the upper surface. Several drainage holes are provided in the filtration zone, and a drain outlet is provided on the bottom of the waste slag pool below the filtration zone. Since the debris itself carries a certain amount of wastewater, separation allows for better cleaning of the debris.

[0014] As an optimization, the outlet end of the sludge conveying pipe is vertically equipped with a slurry drop pipe that is integrally isosceles trapezoidal in shape. The outlet end of the sludge conveying pipe is connected to the small-diameter end of the slurry drop pipe. The projection of the large-diameter end of the slurry drop pipe along the vertical direction lies within the projection of the mesh conveyor belt along the vertical direction. A slurry drop lifting device is installed below the sludge conveying pipe. The top of the slurry drop lifting device has a telescopic rod that can extend and retract in the vertical direction. The top of the telescopic rod is fixedly connected to the sludge conveying pipe to control the distance between the large-diameter end of the slurry drop pipe and the mesh conveyor belt. The larger the distance between the large-diameter end of the slurry drop pipe and the mesh conveyor belt, the faster the sludge falls; conversely, the smaller the distance, the slower the sludge falls. By controlling the distance, the amount of sludge processed can be controlled.

[0015] As an optimization, a sludge discharge pipe is connected to the bottom of the sludge tank, and a sludge pump is connected to the end of the sludge discharge pipe away from the sludge tank. The sludge after separation can be directly pumped out for dewatering and concentration using the sludge pump.

[0016] Compared with existing technologies, this utility model has a simple structure and is easy to maintain. It separates sludge and impurities by gravity and collects sludge and impurities separately. Attached Figure Description

[0017] Figure 1 This is a front cross-sectional view of the present invention;

[0018] Figure 2 This is a three-dimensional view of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A;

[0020] Figure 4 This is a schematic diagram of the connection structure between the slag plate and the slag plate lifting device in this utility model. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] like Figures 1 to 4As shown, the sludge impurity separation device in this specific embodiment includes a sludge tank 1 and a conveying device. The conveying device includes a mesh conveyor belt 3 located above the sludge tank 1 and driven by a conveying roller 2. The mesh conveyor belt 3 is covered with a number of mesh holes that allow sludge to pass through. Conveying brackets 4 are respectively provided at both ends of the conveying roller 2, which are fixed to both sides of the sludge tank 1 and rotatably connected to the conveying roller 2. A sludge conveying pipe 5 is provided above the mesh conveyor belt 3 for discharging sludge to the conveying inlet end of the mesh conveyor belt 3. A sludge receiving device is provided below the conveying outlet end of the mesh conveyor belt 3.

[0024] In this specific embodiment, the mesh conveyor belt 3 is inclined upward from its upper inlet end toward its upper outlet end.

[0025] In this specific embodiment, a scraper 6 is provided at the conveying outlet end of the mesh conveyor belt 3. The two ends of the scraper 6 are fixedly connected to two conveying brackets 4 located at the conveying outlet end of the mesh conveyor belt 3. One side of the scraper 6 is a scraping edge, which abuts against the lower surface of the conveying outlet end of the mesh conveyor belt 3. The two ends of the scraping edge extend out of the two sides of the mesh conveyor belt 3, respectively.

[0026] In this specific embodiment, a movable bracket 7 is also fixedly connected to the scraper 6. The movable bracket 7 has vertically arranged movable sleeves 8 fixedly connected to both ends along the width direction of the mesh conveyor belt 3. A connecting rod 9 is inserted through the movable sleeve 8 and can slide along the center line of the movable sleeve 8. The upper ends of the two connecting rods 9 are fixedly connected to the two conveying brackets 4 located at the conveying outlet end of the mesh conveyor belt 3. An adjusting nut 10 is threaded on the rod body of the connecting rod 9 located below the movable sleeve 8. A clamping spring 11 is sleeved on the rod body of the connecting rod 9 located between the movable sleeve 8 and the adjusting nut 10. The two ends of the clamping spring 11 abut against the movable sleeve 8 and the adjusting nut 10 respectively, so as to provide spring force for the scraping edge of the scraper 6 to abut against the lower surface of the conveying outlet end of the mesh conveyor belt 3.

[0027] In this specific embodiment, the slag receiving device includes a waste slag pool 12 and a slag receiving trough 13 located between the waste slag pool 12 and the mesh conveyor belt 3. The inlet end of the slag receiving trough 13 is located below the conveying outlet end of the mesh conveyor belt 3, and the outlet end of the slag receiving trough 13 is located above the waste slag pool 12. The slag receiving trough 13 is inclined downwards with its upper outlet end facing downwards. A slag trough support frame is provided at the bottom of the slag receiving trough 13 for supporting it.

[0028] In this specific embodiment, a slag plate 14 is provided in the waste slag pool 12. The cross-sectional shape of the slag plate 14 is consistent with the cross-sectional shape of the waste slag pool 12. The slag plate 14 can slide and cooperate with the pool wall of the waste slag pool 12 in the vertical direction. A slag plate lifting device 15 is installed at the bottom of the waste slag pool 12. A lifting rod extends from the top of the slag plate lifting device 15. The top of the lifting rod is fixedly connected to the bottom of the slag plate 14 to control the slag plate 14 to move toward the pool opening of the waste slag pool 12.

[0029] In this specific embodiment, the upper surface of the slag plate 14 is an inclined surface, and a water filtration zone is provided at the lowest point of the upper surface of the slag plate 14. Several water leakage holes are provided in the water filtration zone of the slag plate 14, and a drain outlet 20 is provided on the bottom of the waste slag pool 12 located below the water filtration zone.

[0030] In this specific embodiment, the outlet end of the sludge conveying pipe 5 is vertically provided with a slurry drop pipe 16 that is integrally in the shape of an isosceles trapezoid. The outlet end of the sludge conveying pipe 5 is connected to the small-diameter end of the slurry drop pipe 16. The projection of the large-diameter end of the slurry drop pipe 16 in the vertical direction is located within the projection of the mesh conveyor belt 3 in the vertical direction. A slurry drop lifting device 17 is provided below the sludge conveying pipe 5. A telescopic rod that can extend and retract in the vertical direction extends from the top of the slurry drop lifting device 17. The top of the telescopic rod is fixedly connected to the sludge conveying pipe 5 to control the distance between the large-diameter end of the slurry drop pipe 16 and the mesh conveyor belt 3.

[0031] In this specific embodiment, the bottom of the sludge tank 1 is connected to a sludge discharge pipe 18, and the end of the sludge discharge pipe 18 away from the sludge tank 1 is connected to a sludge pump 19.

[0032] 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 sludge impurities separation apparatus, characterized by: The device comprises a sludge pool and a conveying device, the conveying device comprises a mesh conveying belt located above the sludge pool and driven by conveying rollers, the mesh conveying belt is fully covered with a plurality of mesh holes capable of allowing sludge to pass through, both ends of the conveying rollers are respectively provided with conveying supports fixed on both sides of the sludge pool and rotationally connected with the conveying rollers, the upper side of the mesh conveying belt is provided with a sludge conveying pipe for discharging sludge to the conveying inlet end of the mesh conveying belt, and a residue receiving device is located below the conveying outlet end of the mesh conveying belt.

2. The sludge impurity separation apparatus of claim 1, wherein: The mesh conveying belt is obliquely upwardly inclined from the conveying inlet end to the conveying outlet end.

3. The sludge impurity separation apparatus of claim 1, wherein: The conveying outlet end of the mesh conveying belt is provided with a sludge scraping plate, both ends of the sludge scraping plate are fixedly connected to the two conveying supports corresponding to the conveying outlet end of the mesh conveying belt, one side edge of the sludge scraping plate is a sludge scraping edge, the sludge scraping edge abuts against the lower surface of the conveying outlet end of the mesh conveying belt, and both ends of the sludge scraping edge extend out of the two side edges of the mesh conveying belt.

4. The sludge impurity separation apparatus of claim 3, wherein: The sludge scraping plate is further fixedly connected with a movable support, vertical movable sleeves are fixedly connected to both ends of the movable support along the width direction of the mesh conveying belt, connecting rods capable of slidingly fitting with the movable sleeves along the center line direction of the movable sleeves are arranged in the movable sleeves, the upper ends of the two connecting rods are fixedly connected to the two conveying supports corresponding to the conveying outlet end of the mesh conveying belt, adjusting nuts are threadedly fitted on the rods above the movable sleeves on the connecting rods, abutting springs are sleeved on the rods between the movable sleeves and the adjusting nuts on the connecting rods, and both ends of the abutting springs abut against the movable sleeves and the adjusting nuts, so that the spring force is provided for the abutment of the sludge scraping edge of the sludge scraping plate on the lower surface of the conveying outlet end of the mesh conveying belt.

5. The sludge impurity separation device of claim 1, wherein: The residue receiving device comprises a residue pool and a residue receiving groove located between the residue pool and the mesh conveying belt, the inlet end of the residue receiving groove is located below the conveying outlet end of the mesh conveying belt, the outlet end of the residue receiving groove is located above the residue pool, the residue receiving groove is obliquely downwardly inclined from the inlet end to the outlet end, and the bottom of the residue receiving groove is provided with a residue groove support frame for supporting the residue receiving groove.

6. The sludge impurity separation apparatus of claim 5, wherein: A residue plate is arranged in the residue pool, the cross-sectional shape of the residue plate is consistent with the cross-sectional shape of the residue pool, the residue plate can slidingly fit with the pool wall of the residue pool in the vertical direction, a residue plate lifting device is installed on the pool bottom of the residue pool, a jacking rod extends out of the top of the residue plate lifting device, and the top of the jacking rod is fixedly connected with the bottom of the residue plate to control the movement of the residue plate towards the pool opening of the residue pool.

7. The sludge impurity separation apparatus of claim 6, wherein: The upper surface of the residue plate is an inclined surface, a water filtering area is arranged at the lowest position of the upper surface of the residue plate, a plurality of water leakage holes are arranged in the residue plate at the position of the water filtering area, and a drainage opening is arranged on the pool bottom of the residue pool below the water filtering area.

8. The sludge impurity separation device of claim 1, wherein: The outlet end of the sludge conveying pipe is vertically provided with a slurry falling pipe in the shape of an isosceles trapezoid as a whole, the outlet end of the sludge conveying pipe is connected with the small-diameter end of the slurry falling pipe, the projection of the large-diameter end of the slurry falling pipe in the vertical direction is located in the projection of the net conveying belt in the vertical direction, the sludge conveying pipe is provided below with a slurry falling lifting device, the top of the slurry falling lifting device extends with a telescopic rod capable of being telescoped in the vertical direction, the top of the telescopic rod is fixedly connected with the sludge conveying pipe to control the distance between the large-diameter end of the slurry falling pipe and the net conveying belt.

9. The sludge impurity separation apparatus of claim 1, wherein: The sludge pool is connected with a sludge discharge pipe, and the end of the sludge discharge pipe away from the sludge pool is connected with a sludge pumping pump.

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