A self-rotating tracked soil remediation apparatus

Abstract

The application discloses a self-rotation caterpillar type soil remediation equipment and belongs to the technical field of soil remediation. The application comprises a heating cavity, a microwave heating box, an earth outlet pipe, an earth inlet cavity, a stirring box and a filter box. The microwave heating box is mounted on the side wall of the heating cavity. The upper end of the heating cavity is provided with a box cover between the heating cavity and the earth inlet cavity. The lower end of the heating cavity is provided with the earth outlet pipe. One side of the heating cavity is provided with the stirring box. The remaining air pipeline is connected with the heating cavity and the stirring box. The lower end of the stirring box is provided with the filter box. The other side wall of the heating cavity is provided with an air outlet pipe. The other end of the air outlet pipe is connected with the stirring box. The inside of the heating cavity is provided with a shaft, a bevel gear, a caterpillar type device, a gear and a fixing support. The self-rotation caterpillar type device is used to utilize the natural movement of soil gravity. The two ends of the four self-rotation caterpillar type devices are connected with each other through the bevel gears. The stirring device in the stirring cavity is connected through the connecting shaft speed reducer. The falling time of the soil is further slowed down through the water resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil remediation, in particular to a self-rotating tracked soil remediation device. BACKGROUND

[0002] Soil is an important natural environment for human survival. With the rapid development of industry, soil has become the final destination of various pollutants, and the large accumulation of pollutants has become one of the main environmental problems. Volatile organic compounds (VOCs) or semi-volatile organic compounds (SVOCs) pollute the soil after entering the soil, and cause secondary pollution to surface water and groundwater, directly or indirectly endangering human health. In recent years, the problem of soil VOCs or SVOCs pollution in China has become increasingly prominent, posing a serious threat to the ecological environment, food safety and human health. In the current environment of vigorously protecting the ecological environment in China, soil pollution is a problem that needs to be improved urgently.

[0003] At present, methods such as landfill, incineration, biological treatment and thermal desorption are commonly used to remediate VOCs and SVOCs contaminated soil. Landfill and incineration treatment methods have short treatment cycles, simple methods, but are expensive and can cause secondary pollution; biological treatment methods have small investment, low operating cost, simple operation, and small environmental disturbance, but have a long remediation period; thermal desorption is one of the mature and reliable technologies internationally recognized for treating VOCs and SVOCs contaminated soil, and is widely used in VOCs and SVOCs contaminated site remediation; thermal desorption technology has good adaptability to different types and concentrations of organic pollutants, and has fast remediation speed and short cycle.

[0004] The existing soil organic matter remediation equipment structure is complex, and the heating chamber has poor airtightness, insufficient heating, and the tail gas generated during remediation has a temperature as high as 400-800℃, or even higher, resulting in a large amount of heat loss and energy waste, high soil remediation cost, long soil remediation cycle, low efficiency, and is not conducive to large-scale promotion. SUMMARY

[0005] The present application relates to the technical field of soil remediation, in particular to a self-rotating tracked soil remediation device.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The self-rotating caterpillar type soil remediation equipment comprises a heating cavity, a microwave heating box, an unearthing pipe, an earth inlet cavity, a stirring box and a filter box; the microwave heating box is installed on the side wall of the heating cavity; a box cover is arranged between the upper end of the heating cavity and the earth inlet cavity; the unearthing pipe is arranged at the lower end of the heating cavity; the stirring box is arranged at one side of the heating cavity; an air outlet pipe is arranged at the other side wall of the heating cavity; the air outlet pipe is connected with the stirring box; the inside of the heating cavity is provided with a shaft, bevel gears, a caterpillar type device, gears and fixed supports; two groups of fixed supports are arranged on each side wall of the inside of the heating cavity; the shaft is arranged between the two groups of fixed supports; gears and bevel gears are arranged at the two ends of the shaft; the caterpillar type device comprises a support frame and a bearing plate; the support frame is vertically installed on the outer circumferential side of the caterpillar type device; the bearing plate is installed on the caterpillar type device through the support frame; the inside of the box cover is provided with earth outlet openings of the earth inlet cavity, a hydraulic device and valve plugs; the earth outlet openings of the earth inlet cavity are four in number and are arranged in the inside of the box cover; the hydraulic device is arranged in the inside of the box cover; the upper end of the hydraulic device is provided with valve plugs; one end of the two bevel gears is connected with the rotating shaft; the other end of the rotating shaft is connected with a speed reducer; the upper end of the stirring box is connected with the filter box through a water return pipe; a pump is installed on the upper end of the stirring box; the pump is connected with the water return pipe; the upper end of the filter box is provided with four groups of support columns; the upper ends of the support columns are connected with the stirring box; a water inlet pipe is connected with the stirring box and the filter box.

[0008] Further, the shafts are provided in four groups, and the bevel gears on the two adjacent groups of shafts are meshed with each other.

[0009] Further, the lower ends of the earth outlet openings of one group of earth inlet cavities correspond to one group of caterpillar type devices respectively.

[0010] Further, the other end of the speed reducer is connected with a speed reduction mechanism in the inside of the stirring box; the rotating shaft is installed on the side wall between the heating cavity and the stirring box through a sealing bearing.

[0011] Further, the filter box is internally provided with a plurality of filter devices and is divided into multiple layers.

[0012] Compared with the prior art, the present application has the following beneficial effects:

[0013] 1. The valve plug conforming to the shape of the cavity opening is used to control whether the soil enters the heating cavity, thereby enhancing the sealing property of the cavity.

[0014] 2. The self-rotating caterpillar type device is used to utilize the natural movement of the soil gravity; the two ends of the four self-rotating caterpillar type devices are connected with each other through the bevel gears; the stirring device in the stirring cavity is connected through the connecting shaft speed reducer; the water resistance is used to further slow down the falling time of the soil, thereby providing sufficient time for evaporating the organic pollutants.

[0015] 3、The self-rotating caterpillar device top plate can move, one end is vertical, and one end is parallel, space is saved, more space is provided for the internal microwave heater, and a residual gas pipe is arranged at the rear end of the stirring box to return the remaining unfused gas with residual temperature to the heating cavity, so that the heating effect is better and energy is saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a device axis drawing of the present application;

[0017] Figure 2 is a device open cover axis drawing of the present application;

[0018] Figure 3 is a caterpillar device axis drawing of the present application;

[0019] Figure 4 is an explosion view of the caterpillar device of the present application;

[0020] Figure 5 is a box cover axis drawing of the present application;

[0021] Figure 6 is a box cover cross-sectional view of the present application;

[0022] Figure 7 is a caterpillar device side view of the present application.

[0023] In the figure: 100, heating cavity; 101, microwave heating box; 102, residual gas pipe; 103, soil outlet pipe; 104, gas outlet pipe; 105, fixed support; 110, shaft; 111, bevel gear; 112, caterpillar device; 113, support frame; 114, bearing plate; 115, gear; 120, soil inlet cavity; 121, box cover; 122, soil inlet cavity soil outlet; 123, hydraulic device; 124, valve plug; 130, stirring box; 131, water return pipe; 132, pump; 133, rotating shaft; 134, speed reducer; 140, filter box; 141, support column; 142, water inlet pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] Please refer to Figures 1-7The self-rotating caterpillar type soil remediation equipment of the embodiment comprises a heating cavity 100, a microwave heating box 101, a residual gas pipeline 102, a soil outlet pipeline 103, a gas outlet pipeline 104, a fixing support 105, a shaft 110, bevel gears 111, a caterpillar type device 112, a support frame 113, a bearing plate 114, gears 115, a soil inlet cavity 120, a box cover 121, a soil outlet of the soil inlet cavity 122, a hydraulic device 123, a valve plug 124, a stirring box 130, a water return pipeline 131, a pump 132, a rotating shaft 133, a speed reducer 134, a filter box 140, support columns 141, and a water inlet pipeline 142.

[0026] As shown in Figure 1 , Figure 2 , the heating cavity 100 has the microwave heating box 101, the residual gas pipeline 102, and the soil outlet pipeline 103, and is internally provided with the shaft 110, the bevel gears 111, the caterpillar type device 112, the support frame 113, the bearing plate 114, and the gears 115. The box cover 121 is installed on the upper portion of the heating cavity 100. The microwave heating box 101 is installed on the side wall of the heating cavity 100, and is internally provided with a fan and heat exchange pipes. Cold air is blown through the heat exchange pipes by the fan to be heated, and then the hot air enters the heating cavity 100. The internal side wall of the heating cavity 100 is provided with a ventilation pipeline to blow hot air into the internal space of the heating cavity 100. The residual gas pipeline 102 connects the heating cavity 100 and the stirring box 130, and sends the contaminated gas with residual heat in the stirring box 130, which is not mixed with water, into the heating cavity 100 to prevent heat waste. The soil outlet pipeline 103 is located below the heating cavity 100, and discharges the evaporated soil in the heating cavity 100. The gas outlet pipeline 104 is connected to the side wall of the heating cavity 100 at one end, and is connected to the side wall of the stirring box 130 at the other end. The gas outlet pipeline 104 transports the hot contaminated gas in the heating cavity 100 to the stirring box 130. The fixing support 105 is installed on the side wall of the heating cavity 100. There are two fixing supports 105 on each side wall of the heating cavity 100, and the fixing supports 105 support the shaft 110.

[0027] As shown in Figure 3 , Figure 4 , the shaft 110 is provided with the gears 115 and the bevel gears 111 at both ends, and can rotate freely. The bevel gears 111 are installed on both ends of the shaft 110. As shown in Figure 2 , a plurality of bevel gears 111 are meshed with each other, and can rotate in coordination to form four shafts 110 that can rotate at the same angular velocity. Two bevel gears 111 are connected to the rotating shaft 133. The caterpillar type device 112 is sleeved on the gears 115 at the upper and lower ends, and is driven by the gravity of the soil to rotate according to Figure 3The clockwise direction shown movement, and then drive gear 115 rotation; the support frame 113 is fixedly installed on the track device 112, such as Figure 3 As shown, in the clockwise movement, the support frame 113 only supports the bearing plate 114 in one direction of freedom, that is, not to let the soil fall on the right side, while the left side of the bearing plate 114 is automatically perpendicular to the bottom surface, reducing the use of space; the bearing plate 114 is installed in the rotating pair on the track device 112, which is limited by the support frame 113 in one direction of freedom, that is, not to let the soil fall on the right side, while the left side of the bearing plate 114 is automatically perpendicular to the bottom surface, reducing the use of space; the gear 115 is installed at both ends of the shaft 110, which can be moved by the track device 112 and then drive the shaft 110 rotation; the soil cavity 120 is located at the upper end of the box cover 121, which receives the soil;

[0028] As shown in Figure 5 , 6 The box cover 121 has a soil cavity and a soil outlet 122, a hydraulic device 123, and a valve plug 124 inside, the box cover 121 is installed on the upper end of the heating cavity 100, and is sealed; the soil cavity and soil outlet 122 has four, which is located inside the box cover 121, which can be evenly distributed to the four directions of the bearing plate 114 by the soil cavity 120; the hydraulic device 123 is located inside the box cover 121, which can push the valve plug 124 up and down; the valve plug 124 is located inside the box cover 121, which is in shape with the shape of the channel inside the box cover 121, can be sealed by the top of the soil cavity 120 channel and can open the channel, the inclined shape can also be shunted by the soil;

[0029] As shown in Figure 1 , Figure 2As shown, the stirring box 130 is installed on the upper end of the filter box 140, and has stirring device and stirring mechanism connected with the rotating shaft 133 and the speed reducer 134. The stirring box 130 mixes the hot contaminated gas with water, and then sends the mixture to the filter box 140. The backwater pipe 131 is installed between the stirring box 130 and the filter box 140, and can inject the purified water in the filter box 140 back to the stirring box 130 for recycling. The pump 132 is installed on the upper end of the stirring box 130, and is connected with the backwater pipe 131 to provide suction for the backwater pipe 131. The rotating shaft 133 is installed on the sidewall between the heating cavity 100 and the stirring box 130 through a sealing bearing. One end of the rotating shaft 133 is connected with the bevel gear 111, and the other end is connected with the speed reducer 134, which is further connected with the stirring mechanism in the stirring box 130. The water resistance is used to slow down the angular velocity of the shaft 110, thereby prolonging the heating time of the soil in the heating cavity 100. The speed reducer 134 is installed on the rotating shaft 133, and uses the internal transmission ratio to make the angular velocity of the shaft 110 much smaller than that of the stirring mechanism in the stirring box 130. The filter box 140 has filter device inside, and is divided into multiple layers. After multi-stage filtration, the water reaching the lower end is clean water. There are four support columns 141 installed on the filter box 140 to support the stirring box 130. The water inlet pipe 142 is connected with the stirring box 130 and the filter box 140.

[0030] Working principle: the valve plug 124 is used to control the soil entering the heating cavity 100, which enhances the sealing of the cavity. The self-rotating caterpillar device 112 is used to utilize the natural movement of soil gravity. The two ends of the four self-rotating caterpillar devices 112 are connected by bevel gears 111, which are connected to the stirring device in the stirring cavity through a connecting shaft reducer 134. The water resistance is used to further slow down the falling time of the soil. The top plate of the self-rotating caterpillar device 112 is movable, one end is vertical, and the other end is parallel, which saves space and provides more space for the internal microwave heater. The remaining gas pipe is arranged at the rear end of the stirring box 130 to return the remaining gas with residual heat back to the heating cavity 100, which solves the problem of high cost and low efficiency of the soil remediation equipment using the thermal desorption method. The soil enters the box cover 121 from the soil inlet cavity 120. The hydraulic device 123 and the valve plug 124 control whether the soil in the soil inlet cavity 120 enters the soil inlet cavity outlet 122. Then the soil falls from the soil inlet cavity outlet 122 to the bearing plate 114 of the self-rotating caterpillar device 112 composed of shaft 110, bevel gear 111, caterpillar device 112, support frame 113, bearing plate 114, and gear 115. The gravity received by the soil drives the caterpillar device 112 to move and in turn drives the shaft 110 to rotate. The two ends of the shaft 110 are connected to the stirring device in the stirring box 130 through the bevel gears 111 and the reducer 134. The water in the stirring box 130 provides resistance to slow down the angular velocity of the shaft 110. The shaft 110 can also stir water and gas. The stirring box 130 also has another stirring device for stirring. After stirring, the water containing contaminated gas flows into the filter box 140. The filter box 140 has multiple layers of filter screens. When the water flows to the lowermost end of the filter box 140, the backwater pipe 131 and the pump 132 will extract clean water into the stirring box 130 for repeated use. The remaining gas pipe 102 also sends the gas not melted into the water in the stirring box 130 back into the heating cavity 100, achieving the effect of reducing the cost of thermal desorption soil remediation equipment and improving efficiency.

[0031] The above description of the application and its embodiments is illustrative and not limiting. The drawings shown are only one of the embodiments of the application, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it, without departing from the purpose of the application, similar structural methods and embodiments can be designed without creative design, which should belong to the protection scope of the application.

Claims

1. A self-rotating tracked soil remediation apparatus characterised in that: The utility model provides a microwave heating device for soil, which comprises a heating cavity (100), a microwave heating box (101), an unearthing pipe (103), an earth inlet cavity (120), a stirring box (130) and a filter box (140); the side wall of the heating cavity (100) is provided with the microwave heating box (101); the upper end of the heating cavity (100) is provided with a box cover (121) between the earth inlet cavity (120); the lower end of the heating cavity (100) is provided with the unearthing pipe (103); one side of the heating cavity (100) is provided with the stirring box (130); a remaining gas pipeline (102) connects the heating cavity (100) and the stirring box (130); the lower end of the stirring box (130) is provided with the filter box (140); the other side wall of the heating cavity (100) is provided with an air outlet pipe (104); the other end of the air outlet pipe (104) is connected with the stirring box (130); the inside of the heating cavity (100) is provided with a shaft (110), a bevel gear (111), a caterpillar device (112), a gear (115) and a fixed support (105); two groups of fixed supports (105) are arranged on each side wall of the inside of the heating cavity (100); the shaft (110) is arranged between the two groups of fixed supports (105); the two ends of the shaft (110) are provided with the gear (115) and the bevel gear (111); the caterpillar device (112) comprises a support frame (113) and a bearing plate (114); the support frame (113) is vertically arranged on the outer circumferential side of the caterpillar device (112); the bearing plate (114) is arranged on the caterpillar device (112) through the support frame (113); the inside of the box cover (121) is provided with an earth inlet cavity unearthing opening (122), a hydraulic device (123) and a valve plug (124); the earth inlet cavity unearthing opening (122) is provided with four earth inlet cavity unearthing openings and is arranged in the inside of the box cover (121); the hydraulic device (123) is arranged in the inside of the box cover (121); the upper end of the hydraulic device (123) is provided with the valve plug (124); one end of the shaft (110) is connected with the other end of the shaft (110); the other end of the shaft (110) is connected with a speed reducer (134); the upper end of the stirring box (130) is connected with the filter box (140) through a backwater pipe (131); a pump (132) is arranged on the upper end of the stirring box (130); the pump (132) is connected with the backwater pipe (131); the upper end of the filter box (140) is provided with four support columns (141); the upper end of the support column (141) is connected with the stirring box (130); a water inlet pipe (142) is connected with the stirring box (130) and the filter box (140). The shaft (110) is provided with four groups; the bevel gears (111) on the two adjacent groups of shafts (110) are meshed with each other; the lower end of one group of earth inlet cavity unearthing openings (122) is respectively connected with one group of caterpillar devices (112); the other end of the speed reducer (134) is connected with a speed reduction mechanism in the stirring box (130); the shaft (133) is arranged on the side wall between the heating cavity (100) and the stirring box (130) through a sealing bearing; the filter box (140) is provided with a plurality of filter devices and is divided into multiple layers.

Images