A screening and dewatering device for contaminated soil remediation of a landfill

Abstract

The utility model discloses a kind of screening dewatering devices for waste landfill pollution soil clean-up treatment, it is related to pollution soil treatment technical field, to solve the problem that current technical scheme cannot sufficiently reduce the moisture in the pollution soil after screening and cannot better reduce the workload of artificial, its technical scheme main point is: including tee pipe and screening dewatering component, screening dewatering component is installed on tee pipe.The utility model discloses a kind of screening dewatering devices for waste landfill pollution soil clean-up treatment, can be more fully screened and dewatered to the moisture in the pollution soil, it is favorable to improve the efficiency of screening dewatering, and it is favorable to improve the efficiency of dehydration solidification of subsequent processing step, while it can be shared to send to the pollution soil that screening is completed, improve the convenience of sharing and sending, solve the problem that artificial shovel out and send time and effort, it is favorable to reduce the workload of artificial.

Description

Technical Field

[0001] This utility model relates to the field of contaminated soil remediation technology, and more specifically to a screening and dewatering device, which relates to a screening and dewatering device for the cleanup and remediation of contaminated soil in landfills. Background Technology

[0002] Waste refers to solid and semi-solid materials and other waste items that are discarded in daily life and production and have lost their original use value. According to the source, it can be divided into household waste, industrial waste and construction waste. In order to facilitate the centralized storage of waste, landfills are required. Landfills are centralized waste storage sites using sanitary landfill methods. When cleaning and treating landfills, screening and dewatering devices for cleaning and treating contaminated soil in landfills are needed to help solidify sludge.

[0003] For example, Chinese Patent Publication CN207507799U discloses a vibrating screening device for heavy metal contaminated soil. This device includes a screen frame with a filter screen inside. Rollers are installed on both sides of the screen frame and rest on a machine frame. An outlet is located at the right end of the screen frame, and a debris conveyor belt is installed at the outlet. A connecting rod is connected to the left end of the screen frame, and the connecting rod is sleeved on a crankshaft via a collar. The crankshaft is connected to a motor. A spray system is installed above the filter screen, and a collection hopper is installed below the filter screen. A mud-water separation device is installed below the collection hopper. This invention increases the amplitude of the screen vibration through the crankshaft, making it easier for the soil to drain after being impacted by water, thereby reducing the amount of spray liquid used and facilitating subsequent soil dewatering operations.

[0004] Existing technologies use spray liquid for screening. However, in actual experiments, this method has been found to significantly increase the moisture content of the contaminated soil due to the large amount of spray liquid added. This hinders the rapid dehydration of the screened soil and reduces subsequent dehydration efficiency. Furthermore, it prevents the distribution and transportation of the screened soil manually, which is laborious and reduces the ease of use of the equipment and the reduction of manual workload. Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a screening and dewatering device for the treatment of contaminated soil in landfills. This device solves the problems of existing spraying liquids increasing the moisture content of contaminated soil, which is not conducive to faster dewatering of the screened contaminated soil. It also fails to distribute and transport the screened contaminated soil, which is not conducive to improving the ease of use of the device and reducing the amount of manual labor.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a screening and dewatering device for the treatment of contaminated soil in landfills, comprising a three-way pipe and a screening and dewatering assembly, wherein the screening and dewatering assembly is mounted on the three-way pipe, and the screening and dewatering assembly includes a shell, a filter plate, a servo motor, a screw conveyor shaft, and an air pump. The three-way pipe is fixedly mounted below the shell, and the filter plate is covered with gauze. The filter plate and the gauze are fixedly mounted below the shell. The servo motor is fixedly mounted on the outer side wall of the shell. The screw conveyor shaft rotatably passes through the shell and is fixedly connected to the output shaft of the servo motor. The air pump is fixedly mounted above the three-way pipe.

[0007] By adopting the above technical solution, contaminated soil in a silt-like state is conveyed to the top of the three-way pipe via a conveying device. The silt enters the outer shell through the three-way pipe, and both valves two and three are closed. As shown in the figure, the servo motor is started to drive the screw conveyor shaft to rotate. The rotation of the screw conveyor shaft can move the silt below the three-way pipe inside the outer shell to the left, so that the silt entering the outer shell can be evenly dispersed inside the outer shell. Valve one is closed and valve two is opened. The air pump is started to convey other substances into the outer shell through the three-way pipe and valve two. The air pressure inside the outer shell increases. Since the silt covers the gauze, the filter plate can filter the gauze. Support is provided to prevent the gauze from sagging. Due to the air pressure, the increased air pressure inside the shell can drive the water in the sludge inside the shell to flow out through the gauze and filter plate, which can screen and dewater the water in the sludge inside the shell. By reversing the start of the servo motor, the screw conveyor shaft is driven to rotate in the opposite direction, which can push the sludge inside the shell in the opposite direction. The reciprocating push of the sludge inside the shell can stir the sludge and facilitate more thorough dewatering of the water in the sludge. Open valve three, start the servo motor to drive the screw conveyor shaft to rotate, and the screw conveyor shaft can drive the sludge inside the shell to be discharged through the discharge pipe and valve three.

[0008] The present invention is further configured such that: a delivery component is installed on one side of the outer shell, the delivery component being used to deliver the contaminated soil.

[0009] The present invention is further configured such that: a discharge pipe is fixedly installed on the side wall of the outer shell; the feeding assembly includes a receiving hopper, a self-locking motor, and a rotating shaft; the receiving hopper is fixedly installed below the outer shell and below the discharge pipe; the self-locking motor is fixedly installed on the side wall of the receiving hopper; the rotating shaft is rotatably installed on the receiving hopper; the rotating shaft is fixedly connected to the output shaft of the self-locking motor; an arc-shaped plate is fixedly installed on the rotating shaft; a bucket is fixedly installed on the arc-shaped plate; and both the arc-shaped plate and the bucket are located inside the receiving hopper.

[0010] The present invention is further configured such that: valve one and valve two are installed inside the three-way pipe, and valve one and valve two are respectively located on the upper and lower sides of the air pump outlet.

[0011] The present invention is further configured such that a valve three is installed inside the discharge pipe.

[0012] The present invention is further configured such that: a bracket is fixedly installed below the outer shell, and the receiving hopper is fixedly installed above the bracket.

[0013] In summary, this utility model has the following beneficial effects: it can achieve more thorough screening and dehydration of water in contaminated soil, which is conducive to improving the efficiency of screening and dehydration, and also conducive to improving the efficiency of dehydration and solidification in subsequent processing steps. At the same time, it can distribute and deliver the screened contaminated soil, which improves the convenience of distribution and delivery, solves the problem of time-consuming and labor-intensive manual shoveling and delivery, and helps to reduce the workload of manual labor. Attached Figure Description

[0014] Figure 1 This is a bottom-view structural diagram of this embodiment;

[0015] Figure 2 This is a schematic cross-sectional view of the screening and dewatering assembly in this embodiment;

[0016] Figure 3 This is a schematic diagram of the rear view structure of the delivery component in this embodiment;

[0017] Figure 4 This is a front view structural diagram of this embodiment.

[0018] Attached diagram descriptions: 1. T-shaped pipe; 2. Screening and dewatering assembly; 201. Outer shell; 202. Filter plate; 203. Servo motor; 204. Screw conveyor shaft; 205. Air pump; 206. Gauze; 3. Feeding assembly; 301. Receiving hopper; 302. Self-locking motor; 303. Rotating shaft; 304. Arc plate; 305. Bucket; 4. Discharge pipe; 5. Valve 1; 6. Valve 2; 7. Valve 3; 8. Support frame. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0021] like Figure 1-2 and Figure 4 As shown, a screening and dewatering device for the treatment of contaminated soil in landfills includes a three-way pipe 1 and a screening and dewatering assembly 2. The three-way pipe 1 facilitates the delivery of contaminated soil to the interior of the outer casing 201. The screening and dewatering assembly 2 is mounted on the three-way pipe 1 and includes the outer casing 201, a filter plate 202, a servo motor 203, a screw conveyor shaft 204, and an air pump 205. The outer casing 201 facilitates the loading of contaminated soil, the filter plate 202 supports the gauze 206, and the servo motor 203 drives the screw conveyor shaft 204 to rotate. The screw conveyor shaft 204 can screen the contaminated soil inside the outer casing 201. The contaminated soil is transported and stirred. The air pump 205 can increase the air pressure inside the housing 201. The three-way pipe 1 is fixedly installed below the housing 201. The filter plate 202 is covered with gauze 206, which can filter the contaminated soil inside the housing 201. The filter plate 202 and gauze 206 are fixedly installed below the housing 201. The servo motor 203 is fixedly installed on the outer side wall of the housing 201. The screw conveyor shaft 204 rotates through the housing 201. The screw conveyor shaft 204 is fixedly connected to the output shaft of the servo motor 203. The air pump 205 is fixedly installed above the three-way pipe 1.

[0022] Contaminated soil, in a silt-like state, is conveyed to the top of the three-way pipe 1 via a conveying device. The silt enters the outer casing 201 through the three-way pipe 1 and is closed by both valves 6 and 7. Figure 2 As shown, by starting the servo motor 203, the screw conveyor shaft 204 is driven to rotate. The rotation of the screw conveyor shaft 204 can move the sludge below the three-way pipe 1 inside the housing 201 to the left, so that the sludge entering the housing 201 is evenly distributed inside the housing 201. The valve 5 is closed and the valve 6 is opened. The air pump 205 is started to transport other substances into the housing 201 through the three-way pipe 1 and the valve 6. The air pressure inside the housing 201 increases. Since the sludge covers the gauze 206, the filter plate 202 can support the gauze 206 and prevent the gauze 206 from sagging. Due to the air pressure, the increased air pressure inside the housing 201 can drive the housing. The water in the sludge inside 201 flows out through gauze 206 and filter plate 202, which can screen and dewater the water in the sludge inside the shell 201. By reversing the start of the servo motor 203, the screw conveyor shaft 204 is driven to rotate in the opposite direction, which can push the sludge inside the shell 201 in the opposite direction. The reciprocating push of the sludge inside the shell 201 can stir the sludge and facilitate more thorough dewatering of the water in the sludge. Opening valve 3 7 and starting the servo motor 203 can drive the screw conveyor shaft 204 to rotate, which can drive the sludge inside the shell 201 to be discharged through the discharge pipe 4 and valve 3 7.

[0023] like Figure 1 and Figure 3-4As shown, a feeding assembly 3 is installed on one side of the outer casing 201. The feeding assembly 3 is used to feed out contaminated soil. A discharge pipe 4 is fixedly installed on the side wall of the outer casing 201. The discharge pipe 4 facilitates the discharge of sludge from the outer casing 201. The feeding assembly 3 includes a receiving hopper 301, a self-locking motor 302, and a rotating shaft 303. The receiving hopper 301 can easily collect the sludge discharged from the discharge pipe 4. The self-locking motor 302 can easily drive the rotating shaft 303 to rotate. The rotating shaft 303 can drive the arc plate 304 to rotate. The receiving hopper 301 is fixedly installed on the outer casing 201. Below 01 and below the discharge pipe 4, the self-locking motor 302 is fixedly installed on the side wall of the receiving hopper 301, and the rotating shaft 303 is rotatably installed on the receiving hopper 301. The rotating shaft 303 is fixedly connected to the output shaft of the self-locking motor 302. An arc plate 304 is fixedly installed on the rotating shaft 303. The arc plate 304 can support the bucket 305. The bucket 305 is fixedly installed on the arc plate 304. The bucket 305 can scoop out the silt in the receiving hopper 301. The arc plate 304 and the bucket 305 are both located inside the receiving hopper 301.

[0024] according to Figure 4 As shown, the sludge discharged from the discharge pipe 4 falls into the receiving hopper 301. When the end of the bucket 305 away from the rotating shaft 303 rotates to the arc-shaped area inside the receiving hopper 301, it can contact the arc-shaped surface inside the receiving hopper 301. By starting the self-locking motor 302, the rotating shaft 303 is driven to rotate clockwise. The clockwise rotation of the rotating shaft 303 drives the arc plate 304 to rotate clockwise. The clockwise rotation of the arc plate 304 drives the bucket 305 to rotate clockwise, and the bucket 305 can scoop up the receiving hopper 301. When the sludge in the hopper 301 is about to turn out from the upper left of the receiving hopper 301, the sludge in the hopper 305 is full of sludge. Because the arc plate 304 is driven to rotate, it has a centrifugal effect, and the sludge in the hopper 305 can be driven to make centrifugal motion. When the hopper 305 falls from the highest point, it can swing the sludge inside to the right and throw the sludge far to the right. When the position of the device is changed, the sludge can be conveniently thrown to different locations at a distance, so that the sludge can be spread out for solidification and dewatering.

[0025] like Figure 2 As shown, the three-way pipe 1 is equipped with valve 5 and valve 6. Valve 5 can seal the top of the three-way pipe 1 to prevent the gas delivered by the air pump 205 from being discharged from the top of the three-way pipe 1. Valve 6 can seal the bottom of the three-way pipe 1 to prevent the sludge inside the outer casing 201 from being squeezed into the three-way pipe 1 and blocking the air pump 205. Valve 5 and valve 6 are located on the upper and lower sides of the outlet of the air pump 205, respectively.

[0026] like Figure 2 and Figure 4As shown, valve 7 is installed inside the discharge pipe 4. When dewatering the sludge inside the outer shell 201, valve 7 can seal the discharge pipe 4, which helps to improve the sealing performance on one side of the outer shell 201.

[0027] like Figure 1 and Figure 4 As shown, a bracket 8 is fixedly installed below the outer casing 201. The bracket 8 can support the outer casing 201 and the receiving hopper 301. The receiving hopper 301 is fixedly installed above the bracket 8.

[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0030] Finally, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 screening and dewatering device for the remediation of contaminated soil in landfills, characterized in that: The device includes a three-way pipe (1) and a screening and dewatering assembly (2). The screening and dewatering assembly (2) is mounted on the three-way pipe (1). The screening and dewatering assembly (2) includes a housing (201), a filter plate (202), a servo motor (203), a screw conveyor shaft (204), and an air pump (205). The three-way pipe (1) is fixedly mounted below the housing (201). The filter plate (202) is covered with gauze (206). The filter plate (202) and the gauze (206) are fixedly mounted below the housing (201). The servo motor (203) is fixedly mounted on the outer side wall of the housing (201). The screw conveyor shaft (204) rotates through the housing (201). The screw conveyor shaft (204) is fixedly connected to the output shaft of the servo motor (203). The air pump (205) is fixedly mounted above the three-way pipe (1).

2. The screening and dewatering device for the treatment of contaminated soil in landfills according to claim 1, characterized in that: A delivery component (3) is installed on one side of the outer casing (201), the delivery component (3) being used to deliver contaminated soil.

3. The screening and dewatering device for the treatment of contaminated soil in landfills according to claim 2, characterized in that: The side wall of the outer shell (201) is fixedly equipped with a discharge pipe (4). The feeding component (3) includes a receiving hopper (301), a self-locking motor (302), and a rotating shaft (303). The receiving hopper (301) is fixedly installed below the outer shell (201) and below the discharge pipe (4). The self-locking motor (302) is fixedly installed on the side wall of the receiving hopper (301). The rotating shaft (303) is rotatably installed on the receiving hopper (301). The rotating shaft (303) is fixedly connected to the output shaft of the self-locking motor (302). An arc-shaped plate (304) is fixedly installed on the rotating shaft (303). A bucket (305) is fixedly installed on the arc-shaped plate (304). The arc-shaped plate (304) and the bucket (305) are both located inside the receiving hopper (301).

4. The screening and dewatering device for the treatment of contaminated soil in landfills according to claim 3, characterized in that: The three-way pipe (1) is equipped with valve one (5) and valve two (6), which are located on the upper and lower sides of the outlet of the air pump (205), respectively.

5. A screening and dewatering device for the treatment of contaminated soil in landfills according to claim 4, characterized in that: The discharge pipe (4) is equipped with valve three (7).

6. A screening and dewatering device for the treatment of contaminated soil in landfills according to claim 5, characterized in that: A bracket (8) is fixedly installed below the outer shell (201), and the receiving hopper (301) is fixedly installed above the bracket (8).

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