Preheating device of thermal desorption rotary kiln

Abstract

The utility model discloses a thermal desorption rotary kiln preheating device, which relates to the technical field of rotary kiln preheating, and comprises a barrel, a smoke guide port is arranged at the bottom of the barrel, a three-way pipe is communicated with the top of the smoke guide port, one end of the three-way pipe is fixedly connected with a filter box, and a filter plate is horizontally mounted in the middle of the filter box. A smoke conveying pipe is arranged at the top of the filter box in a penetrating mode, a water valve is fixedly connected to the other end of a three-way pipe, a water pump is connected to one end of the water valve in a penetrating mode, a water conveying pipe is arranged on one side of the water pump, a side sealing plate is arranged on one side of the filter box, and the outer surface of the filter box is covered with a rock wool layer. And a heat insulation layer is arranged on the inner side of the filter box. The preheating device is reasonable in structure, through the use of the three-way pipe, the filter box, the water valve and the water pump, a smoke filter structure on the preheating device can be conveniently added, blockage of a preheating pipeline is reduced, the using effect of the preheating device of the rotary kiln is improved, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln preheating, in particular to a thermal desorption rotary kiln preheating device. Background Art

[0002] The soil thermal desorption rotary kiln is a device that removes organic pollutants from soil through high-temperature treatment. Its working principle is to send the contaminated soil into the rotary kiln through a conveying device and heat it in a high-temperature environment to cause the organic pollutants to undergo thermal decomposition, volatilization or combustion, thereby achieving the purpose of removing organic pollutants.

[0003] At present, industrial rotary kilns usually use hot flue gas generated when the soil is at high temperature for preheating. Through the structure of the cylinder and the mounting pipe design, the hot flue gas can be introduced into the cylinder for preheating, and under the action of the spiral blades, the material can be fed into the rotary kiln while being preheated.

[0004] For example, a Chinese patent with publication number CN208313003U discloses a rotary kiln preheating device, including a cylinder, the wall of the cylinder is a hollow structure, the cylinder is penetrated by a mounting tube, the mounting tube is fixedly installed with a spiral blade, the spiral blade is located in the cylinder, the outer walls of both sides of the cylinder are fixedly installed with a support frame, one side of the support frame is fixedly installed with a first shell by screws, both ends of the mounting tube pass through the first shell, and a bearing is installed on one side of the first shell, and the mounting tube is rotatably installed with the first shell through the bearing, the two sides of the cylinder are also fixedly installed with a second shell, the mounting tube also passes through the second shell, and the second shell is located on the side of the first shell close to the cylinder, and the mounting tube is opened with a plurality of through holes, and the through holes are respectively located in the second shell. The utility model has a reasonable design structure, simple operation, and convenient use, can effectively preheat the material while feeding, and has good thermal insulation performance to avoid damage to the motor.

[0005] Although the above-mentioned rotary kiln preheating device has the function of preheating while feeding, the preheating device does not have an impurity filtering structure, and the hot flue gas used for preheating contains a large amount of dust and impurities, so that the preheating hot flue gas will cause blockage of the preheating pipeline, affecting the preheating effect of the rotary kiln. Therefore, the present application provides a thermal desorption rotary kiln preheating device to meet the needs. Utility Model Content

[0006] The purpose of the present application is to provide a thermal desorption rotary kiln preheating device to solve the problem that the existing rotary kiln preheating device does not have a flue gas filtering structure and the preheating pipe is blocked, so as to achieve the purpose of adding a flue gas filtering structure to the preheating device and reducing the blockage of the preheating pipe.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a thermal desorption rotary kiln preheating device, comprising a cylinder, a smoke guide port is provided at the bottom of the cylinder, a three-way pipe is connected to the top of the smoke guide port, one end of the three-way pipe is fixedly connected to a filter box, a filter plate is horizontally installed in the middle of the filter box, a smoke delivery pipe is provided at the top of the filter box, the other end of the three-way pipe is fixedly connected to a water valve, one end of the water valve is connected to a water pump, a water delivery pipe is provided on one side of the water pump, and a side sealing plate is provided on one side of the filter box.

[0008] Preferably, a second smoke guide pipe is provided at one end of the cylinder, and one end of the second smoke guide pipe is connected to the filter box.

[0009] Preferably, the outer surface of the filter box is covered with a rock wool layer, and the inner side of the filter box is provided with a heat insulation layer, and the heat insulation layer is made of ceramic material.

[0010] Preferably, a mounting seat is fixedly connected to the bottom of the smoke conveying pipe, a plurality of bolts are penetrated and connected to the peripheral side of the mounting seat, and the bolts are threadedly penetrated by the filter box.

[0011] Preferably, a water storage tank is provided through the bottom of the water pump, both ends of the water storage tank are through-connected with the water valve and the water pipe, a plurality of silicone sheets are fixed to the inner side of the water pipe, and adjacent silicone sheets are tightly fitted.

[0012] Preferably, a plurality of bolts are penetrated and connected around the side sealing plate, and the bolts are penetrated and connected with the filter box, and the length of the side sealing plate is the same as the length of the filter plate.

[0013] Preferably, the filter plate comprises a limiting frame, filter nets are arranged on both upper and lower sides of the limiting frame, and the inner side of the limiting frame is filled with filter cotton.

[0014] In summary, the technical effects and advantages of the utility model are:

[0015] 1. The utility model has a reasonable structure. Through the filter box, filter plate and smoke conveying pipe, it is convenient to increase the smoke filtering structure outside the cylinder body, so that the smoke input in the smoke conveying pipe can be filtered out through the use of the filter net and filter cotton on the filter plate, thereby increasing the purity of the input smoke, reducing the dust and impurities in the hot smoke, avoiding the blockage of the preheating pipeline, improving the use effect of the rotary kiln, and having practicality.

[0016] 2. In the utility model, by setting the water valve, water pump, water pipe and water storage tank, it is convenient to increase the water source input structure on the preheating device, so that the external water source is transported to the three-way pipe through the water pump and the water pipe, so that the preheating pipe in the cylinder can be flushed, and the water source in the water storage tank is stored, so that the water pump can introduce the external water source into the water valve to increase the pressure of the transported water source, and then through the opening of the water valve, it is convenient to quickly pass into the cylinder, clean the pipe inside the cylinder, improve the cleanliness of the cylinder, improve the heat preheating effect of the rotary kiln, and then improve the use effect of the preheating device, which is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of a thermal desorption rotary kiln preheating device;

[0019] Figure 2 It is a schematic diagram of the structure of a three-way pipe and a water pump in a thermal desorption rotary kiln preheating device;

[0020] Figure 3 It is a structural schematic diagram of a three-way pipe and a filter box in a thermal desorption rotary kiln preheating device;

[0021] Figure 4 It is a partial structural schematic diagram of a filter box in a thermal desorption rotary kiln preheating device;

[0022] Figure 5 The figure is a schematic diagram of the structure of a filter plate in a thermal desorption rotary kiln preheating device.

[0023] In the figure: 1. Cylinder; 2. Smoke outlet; 3. Tee pipe; 4. Filter box; 5. Filter plate; 6. Smoke pipe; 7. Water valve; 8. Water pump; 9. Water pipe; 10. Side sealing plate; 11. Mounting seat; 12. Insulation layer; 13. Water storage tank; 14. Bolts; 15. Filter net; 16. Filter cotton; 17. Limit frame. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: Reference Figure 1-5 A thermal desorption rotary kiln preheating device is shown, comprising a cylinder 1, a smoke guide port 2 is provided at the bottom of the cylinder 1, a tee pipe 3 is connected to the top of the smoke guide port 2, one end of the tee pipe 3 is fixedly connected to a filter box 4, a filter plate 5 is horizontally installed in the middle of the filter box 4, a smoke delivery pipe 6 is provided on the top of the filter box 4, a water valve 7 is fixedly connected to the other end of the tee pipe 3, a water pump 8 is connected to one end of the water valve 7, a water delivery pipe 9 is provided on one side of the water pump 8, and a side sealing plate 10 is provided on one side of the filter box 4. The cylinder 1 and the smoke guide port 2 in this embodiment are both existing structures of the rotary kiln, wherein the smoke guide port 2 is the installation end of the first smoke guide pipe on the pre-rotation device, which is used for the input of external hot smoke.

[0026] A second smoke duct is provided at one end of the cylinder 1, and one end of the second smoke duct is connected to the filter box 4. The second smoke duct is an existing structure of the rotary kiln preheating device. The end of the second smoke duct is connected to the filter box 4, and can be used for flue gas input like the input end of the smoke guide port 2.

[0027] The outer surface of the filter box 4 is covered with a rock wool layer, and the inner side of the filter box 4 is provided with an insulation layer 12, which is made of ceramic material. The insulation characteristics of the rock wool facilitate reducing the loss of flue gas heat in the filter box 4. The use of the insulation layer 12 is used to increase the insulation strength of the filter box 4, reduce the loss of flue gas heat, and improve the utilization rate of flue gas heat.

[0028] The bottom of the smoke duct 6 is fixedly connected with a mounting seat 11, and a plurality of bolts are penetrated and connected to the surrounding side of the mounting seat 11, and the bolts and the filter box 4 are threadedly penetrated. The mounting seat 11 is used to increase the mounting end between the smoke duct 6 and the filter box 4, so that the bolts can install the smoke duct 6 on the filter box 4, which is convenient for disassembly of the filter box 4 and the smoke duct 6, and increases the installation flexibility of the filter box 4.

[0029] A water storage tank 13 is provided at the bottom of the water pump 8. Both ends of the water storage tank 13 are connected to the water valve 7 and the water pipe 9. A plurality of silicone sheets are fixedly connected to the inner side of the water pipe 9, and adjacent silicone sheets are tightly fitted. The use of the water storage tank 13 is convenient for storing water sources, and the water pump 8 can quickly pump water from the outside through the water supply in the water storage tank 13, thereby increasing the convenience of conveying water sources in the three-way pipe 3. The silicone sheet is used for sealing treatment on one side of the water pump 8.

[0030] A plurality of bolts 14 are penetrated and connected on all sides of the side sealing plate 10, and the bolts 14 are penetrated and connected to the filter box 4. The length of the side sealing plate 10 is the same as the length of the filter plate 5. By using the side sealing plate 10 and the bolts 14, it is convenient to disassemble the side sealing plate 10 from the filter box 4, open the filter box 4, and facilitate the removal of the filter plate 5 and the replacement of the filter plate 5, thereby improving the cleanliness of the filter plate 5 and improving the filtering effect of the smoke.

[0031] The filter plate 5 includes a limiting frame 17, and filter nets 15 are provided on the upper and lower sides of the limiting frame 17. The inner side of the limiting frame 17 is filled with filter cotton 16. The use of the limiting frame 17 and the filter net 15 facilitates assembly into a box-like structure, which can be used for loading the filter cotton 16, and the filter cotton 16 can filter the dust in the smoke.

[0032] How this utility works:

[0033] When the rotary kiln is used for preheating treatment, the water valve 7 can be closed first, the end of the smoke pipe 6 is connected to the smoke input end, the end of the water pipe 9 is connected to the water source input end, and then the smoke is input through the input end, so that the smoke passes through the smoke pipe 6 and enters the filter box 4. By using the horizontal filter plate 5 in the filter box 4, the filter screen 15 and the filter cotton 16 on the filter plate 5 can filter the dust and impurities in the smoke. The heat insulation layer 12 and the rock wool layer in the filter box 4 can insulate the heat of the circulating smoke to reduce its heat loss. The filtered smoke passes through the filter box 4 and enters the three-way pipe 3, and then passes through the smoke guide port 2 is passed into the internal preheating pipe of the cylinder 1 to realize the preheating treatment of the rotary kiln and increase the filtering function of the preheating device. When the rotary kiln is used for a long time, the water valve 7 and the water pump 8 can be opened. Through the storage of the water source in the water delivery pipe 9, the water pump 8 can use the water source to quickly input the external water source into the water delivery pipe 9, and press the input water source into the water storage tank 13, and then pass through the water valve 7 to input into the three-way pipe 3, so as to perform high-pressure flushing on the inside of the preheating pipe on the cylinder 1, and discharge it through the smoke guide pipes on the upper and lower sides of the cylinder 1, so as to realize the cleaning treatment of the inside of the cylinder 1, reduce the loss of heat, improve the use effect of the preheating device, and have practicality.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal desorption rotary kiln preheating device, comprising a cylinder (1), a smoke guide port (2) is provided at the bottom of the cylinder (1), and is characterized in that: The top of the smoke guide port (2) is connected through a three-way pipe (3), one end of the three-way pipe (3) is fixedly connected to a filter box (4), a filter plate (5) is horizontally installed in the middle of the filter box (4), a smoke delivery pipe (6) is provided through the top of the filter box (4), the other end of the three-way pipe (3) is fixedly connected to a water valve (7), one end of the water valve (7) is connected through a water pump (8), a water delivery pipe (9) is provided on one side of the water pump (8), and a side sealing plate (10) is provided on one side of the filter box (4).

2. A thermal desorption rotary kiln preheating device according to claim 1, characterized in that: A second smoke guide pipe is provided at one end of the cylinder (1), and one end of the second smoke guide pipe is connected to the filter box (4).

3. A thermal desorption rotary kiln preheating device according to claim 1, characterized in that: The outer surface of the filter box (4) is covered with a rock wool layer, and the inner side of the filter box (4) is provided with a heat insulation layer (12), and the heat insulation layer (12) is made of ceramic material.

4. A thermal desorption rotary kiln preheating device according to claim 1, characterized in that: The bottom of the smoke conveying pipe (6) is fixedly connected to a mounting seat (11), and a plurality of bolts are connected through the circumference of the mounting seat (11), and the bolts are threadedly connected to the filter box (4).

5. The thermal desorption rotary kiln preheating device according to claim 1, characterized in that: A water storage tank (13) is provided through the bottom of the water pump (8), and both ends of the water storage tank (13) are connected to the water valve (7) and the water pipe (9). A plurality of silicone sheets are fixedly connected to the inner side of the water pipe (9), and adjacent silicone sheets are tightly fitted.

6. A thermal desorption rotary kiln preheating device according to claim 1, characterized in that: A plurality of bolts (14) are connected through the periphery of the side sealing plate (10), and the bolts (14) are connected through the filter box (4). The length of the side sealing plate (10) is the same as the length of the filter plate (5).

7. The thermal desorption rotary kiln preheating device according to claim 1, characterized in that: The filter plate (5) comprises a limiting frame (17), the upper and lower sides of the limiting frame (17) are both provided with a filter net (15), and the inner side of the limiting frame (17) is filled with filter cotton (16).

Images