Waste gas treatment device for rotary kiln

Abstract

The utility model relates to the technical field of rotary kiln waste gas, in particular to a rotary kiln waste gas treatment device which comprises a bottom plate, a treatment box is arranged on one side of the top of the bottom plate, a gas inlet pipe is arranged below the side wall of one side of the treatment box, a water tank is arranged on the other side of the top of the bottom plate, and a gas outlet is formed in the upper portion of the side wall of one side of the bottom plate. A filter plate is arranged on the lower portion of the interior of the bottom plate, a convenient-to-disassemble mechanism is arranged on the bottom plate and comprises a limiting assembly, and the lower portion of the treatment box communicates with the lower portion of the water tank through a recycling mechanism. Through the arrangement of the recycling mechanism, after impurities in sprayed water are filtered out by the filter plate, the sprayed water flows to the water outlet pipe through the inclined plate and enters the plate heat exchanger, the water absorbing heat of waste gas is cooled, the water enters the water tank through the water inlet pipe after being changed into cold water, and then the water is sprayed out through the nozzle to cool the waste gas, so that the water is always kept in a low-temperature state; and the water can stably cool the waste gas.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln waste gas, in particular to a rotary kiln waste gas treatment device. Background Art

[0002] Rotary kilns can be divided into cement kilns, metallurgical kilns and lime kilns according to the different materials they process. Cement kilns are mainly used to calcine cement clinker, and are divided into two categories: dry-process cement kilns and wet-process cement kilns. Metallurgical kilns are mainly used in the metallurgical industry for magnetization roasting of lean iron ore in steel plants; oxidation roasting of chromium and nickel iron ores; roasting of high-alumina vanadium ore in refractory plants and roasting of clinker and aluminum hydroxide in aluminum plants; and roasting of chromium ore sand and chromium ore powder and other minerals in chemical plants. Lime kilns (i.e., active lime kilns) are used to roast active lime and light-burned dolomite for use in steel plants and ferroalloy plants.

[0003] Publication No.: CN215413222U provides a waste gas recovery device for a rotary kiln, which relates to the technical field of rotary kiln, and comprises a base, a support column is fixedly connected to the top of the base, a cooling device shell is fixedly connected to one end of the support column, a purified water tank is fixedly connected to the inner wall of the purified water tank, a block is fixedly connected to the inner wall of the block, a filter plate is fixedly connected to the top of the purified water tank, a support frame is fixedly connected to the outer wall of the support frame, and a mounting plate is fixedly connected to the outer wall of the support frame. The waste gas recovery device for a rotary kiln has a cooling function, a good cooling effect, and can be cooled in all directions. A plurality of nozzles are arranged at the front end of the nozzle, so that the sprayed water mist is finer, and the water mist evaporates and absorbs a large amount of heat to achieve rapid cooling, thereby preventing the internal heat of the device from being too high and causing unnecessary damage to the device, thereby saving working costs.

[0004] The applicant found that there are some shortcomings in use: the device cools the exhaust gas by spraying water, and the sprayed water is filtered through the filter plate. The filtered water returns to the water storage tank and can be reused. However, after the sprayed water cools the high-temperature exhaust gas, the temperature of the water itself increases. The warm water is recovered and sprayed again, which will reduce the effect of cooling the exhaust gas. In addition, the filter is fixedly installed on the block, which is not convenient to remove and clean.

[0005] Therefore, the utility model designs a rotary kiln waste gas treatment device to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of the utility model is to provide a rotary kiln waste gas treatment device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary kiln waste gas treatment device, comprising: a bottom plate, a treatment box is provided on one side of the top of the bottom plate, an air inlet pipe is provided below the side wall of one side of the treatment box, a water tank is provided on the other side of the top of the bottom plate, a water inlet is provided on the top of the water tank, the top of the water tank is connected with the top of the treatment box through a water pipe, a hollow box connected with the water pipe is installed above the inner wall of the treatment box, a plurality of nozzles are provided at the bottom of the hollow box, an air outlet is provided above the side wall of one side of the bottom plate, a filter plate is provided below the interior of the bottom plate, a disassembly-friendly mechanism is provided on the bottom plate, the disassembly-friendly mechanism includes a limit assembly, and the bottom of the treatment box and the water tank are connected through a recycling mechanism.

[0008] Preferably, the disassembly-friendly mechanism comprises a long groove, which is provided at one end of the processing box, the filter plate being slidably connected to the long groove, and inner walls on both sides of the processing box being provided with U-shaped plates slidably connected to the filter plate. The filter plate is slidably installed in the processing box through the U-shaped plate, and the staff only needs to pull the filter plate to pull the filter plate out of the processing box, thereby facilitating the cleaning of the filter plate.

[0009] Preferably, one end of the filter plate is provided with a through groove and a pull groove, and the pull groove is connected with the bottom of the through groove. The through groove and the pull groove make it convenient for the staff to pull out the filter plate for cleaning.

[0010] Preferably, the limit assembly includes two brackets, which are installed on both sides of one end of the processing box, and a rotating shaft is rotatably installed between the two brackets. Limit blocks are installed on both side outer walls of the rotating shaft, and the two limit blocks are respectively in contact with both sides of one end of the filter plate. Two arc cylinders are installed above one end of the processing box, and an arc rod is slidably installed on the top of the arc cylinder. The bottom of the arc rod is connected to the limit block, and the top of the arc rod is connected to the top inner wall of the arc cylinder through a spring. After the filter plate is installed in the processing box, the spring in the arc cylinder uses the restoring force to make the arc rod drive the limit block to press against one end of the filter plate, thereby improving the stability of the filter plate in the processing box.

[0011] Preferably, the recycling mechanism includes an inclined plate, which is obliquely installed between the lower inner walls of both sides of the treatment box. A water outlet pipe is provided on the lower side wall of one side of the treatment box. One side of the water outlet pipe is connected with the water inlet of the plate heat exchanger. The water outlet of the plate heat exchanger is connected with the water tank through the water inlet pipe. The filtered water can be cooled by the plate heat exchanger, and the water is re-sprayed after cooling to maintain the cooling effect on the exhaust gas.

[0012] Preferably, a transparent observation window is provided below one end of the water tank, and the transparent observation window is convenient for staff to add water in time.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model sets a recycling mechanism. After the impurities are filtered out by the filter plate, the sprayed water flows to the water outlet pipe through the inclined plate and enters the plate heat exchanger to cool the water that absorbs the heat of the exhaust gas. After becoming cold water, it enters the water tank through the water inlet pipe and is sprayed out through the nozzle to cool the exhaust gas, so that the water is always kept at a low temperature, and the effect of water cooling the exhaust gas is kept stable;

[0015] 2. The utility model is provided with a convenient disassembly mechanism. When the filter plate needs to be cleaned, the limit block is rotated upward to allow the arc rod to enter the arc tube and squeeze the spring in the arc tube. After the limit block cancels the limit on the filter plate, the finger is inserted into the pull groove to pull the filter plate outward for cleaning. The operation is convenient. After cleaning, the limit block is rotated again, and the filter plate is inserted into the U-shaped plate from the long groove, and the limit block is released. Through the restoring force of the spring, the arc rod drives the limit block to press against the filter plate, thereby improving the stability of the filter plate in the processing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the processing box of the utility model;

[0018] Figure 3 For the utility model Figure 1 A schematic diagram of the structure at a;

[0019] Figure 4 For the utility model Figure 1 Enlarged schematic diagram of the structure at point b.

[0020] In the figure: 1, bottom plate; 2, treatment box; 3, air inlet pipe; 4, water tank; 5, water inlet; 6, water pipe; 7, hollow box; 8, nozzle; 9, air outlet; 10, filter plate; 11, easy disassembly mechanism; 12, recycling mechanism; 111, long groove; 112, U-shaped plate; 113, through groove; 114, groove; 115, limit assembly; 1151, bracket; 1152, rotating shaft; 1153, limit block; 1154, arc cylinder; 1155, arc rod; 121, inclined plate; 122, water outlet pipe; 123, plate heat exchanger; 124, water inlet pipe. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 The utility model provides an embodiment: a rotary kiln waste gas treatment device, comprising: a bottom plate 1, a treatment box 2 is provided on one side of the top of the bottom plate 1, an air inlet pipe 3 is provided below the side wall of one side of the treatment box 2, a water tank 4 is provided on the other side of the top of the bottom plate 1, a water inlet 5 is provided on the top of the water tank 4, the top of the water tank 4 and the top of the treatment box 2 are connected through a water pipe 6, a hollow box 7 connected to the water pipe 6 is installed above the inner wall of the treatment box 2, a plurality of nozzles 8 are provided at the bottom of the hollow box 7, an air outlet 9 is provided above the side wall of one side of the bottom plate 1, a filter plate 10 is provided at the lower part of the bottom plate 1, a disassembly-friendly mechanism 11 is provided on the bottom plate 1, and the disassembly-friendly mechanism 11 includes a limit assembly 115, the treatment box 2 and the water tank 4 are connected below through a recycling mechanism 12, a water pump is provided at the bottom of the water tank, and the bottom of the water pipe is connected to the water pump.

[0023] See also Figure 2 In this embodiment: the disassembly mechanism 11 includes a long groove 111, the long groove 111 is opened at one end of the processing box 2, the filter plate 10 is slidably connected to the long groove 111, and the inner walls on both sides of the processing box 2 are installed with U-shaped plates 112 slidably connected to the filter plate 10.

[0024] See also Figure 4 In this embodiment, a through groove 113 and a pull groove 114 are formed at one end of the filter plate 10 , and the pull groove 114 is connected to the bottom of the through groove 113 .

[0025] See also Figure 1-3 In this embodiment: the limit assembly 115 includes two brackets 1151, the brackets 1151 are installed on both sides of one end of the processing box 2, a rotating shaft 1152 is rotatably installed between the two brackets 1151, and the outer side walls of the rotating shaft 1152 on both sides are installed with limit blocks 1153, and the two limit blocks 1153 are respectively in contact with both sides of one end of the filter plate 10, and two arc cylinders 1154 are installed above one end of the processing box 2. An arc rod 1155 is slidably installed on the top of the arc cylinder 1154. The bottom of the arc rod 1155 is connected to the limit block 1153, and the top of the arc rod 1155 is connected to the top inner wall of the arc cylinder 1154 through a spring. The contact surface between the limit block and the filter plate is provided with a rubber pad, which can increase friction and improve the tight effect.

[0026] See also Figure 1 In this embodiment: the recycling mechanism 12 includes an inclined plate 121, which is obliquely installed between the lower inner walls of both sides of the processing box 2. A water outlet pipe 122 is provided on the lower side wall of one side of the processing box 2. One side of the water outlet pipe 122 is connected to the water inlet of the plate heat exchanger 123. The water outlet of the plate heat exchanger 123 is connected to the water tank 4 through the water inlet pipe 124. The water inlet pipe and the water outlet pipe are both connected to the plate heat exchanger 123 through a water pump.

[0027] See also Figure 1 In this embodiment: a transparent observation window is provided below one end of the water tank 4.

[0028] Working principle: the waste gas from the rotary kiln enters the treatment box 2 through the air inlet pipe 3, the water in the water tank 4 enters the hollow box 7 through the water pipe 6, and then is sprayed out through the nozzle 8 to cool the waste gas. The cooled waste gas is then discharged through the air outlet 9, and the filter plate 10 filters the impurities in the waste water. The filtered water flows into the plate heat exchanger 123 through the outlet pipe 122. The plate heat exchanger 123 cools the water, and then flows into the water tank 4 through the water inlet pipe 124. The water can be reused. By cooling the water, it is avoided that the water has a certain temperature and affects the cooling effect of the waste gas. The arc tube 115 The restoring force of the inner spring makes the arc rod 1155 drive the limit block 1153 to press against the filter plate 10, which can improve the stability of the filter plate 10 in the processing box 2. When the filter plate 10 needs to be taken out for cleaning, the limit block 1153 is held and rotated upward to make the arc rod 1155 enter the arc cylinder 1154. The limit block 1153 rotates upward with the rotating shaft 1152 as the axis. The other hand of the staff can be inserted into the pull groove 114 to pull out the filter plate 10 for cleaning. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may 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 shall be included in the protection scope of the present invention.

Claims

1. A rotary kiln exhaust gas treatment device, comprising: A bottom plate (1), characterized in that: a treatment box (2) is provided on one side of the top of the bottom plate (1), an air inlet pipe (3) is provided below the side wall of one side of the treatment box (2), a water tank (4) is provided on the other side of the top of the bottom plate (1), a water inlet (5) is provided on the top of the water tank (4), the top of the water tank (4) and the top of the treatment box (2) are connected through a water pipe (6), a hollow box (7) connected to the water pipe (6) is installed above the inner wall of the treatment box (2), a plurality of nozzles (8) are provided at the bottom of the hollow box (7), an air outlet (9) is provided above the side wall of one side of the bottom plate (1), a filter plate (10) is provided below the inside of the bottom plate (1), a disassembly-friendly mechanism (11) is provided on the bottom plate (1), the disassembly-friendly mechanism (11) comprises a limit assembly (115), and the bottoms of the treatment box (2) and the water tank (4) are connected through a recycling mechanism (12).

2. A rotary kiln waste gas treatment device according to claim 1, characterized in that: The easy-to-disassemble mechanism (11) comprises a long groove (111), the long groove (111) is formed at one end of the processing box (2), the filter plate (10) is slidably connected to the long groove (111), and the inner walls on both sides of the processing box (2) are both provided with U-shaped plates (112) slidably connected to the filter plate (10).

3. A rotary kiln waste gas treatment device according to claim 2, characterized in that: A through groove (113) and a pull groove (114) are formed at one end of the filter plate (10), and the pull groove (114) is connected to the bottom of the through groove (113).

4. A rotary kiln waste gas treatment device according to claim 1, characterized in that: The limit assembly (115) comprises two brackets (1151), the brackets (1151) are mounted on both sides of one end of the processing box (2), a rotating shaft (1152) is rotatably mounted between the two brackets (1151), both side outer walls of the rotating shaft (1152) are mounted with limit blocks (1153), the two limit blocks (1153) are respectively in contact with both sides of one end of the filter plate (10), two arc-shaped cylinders (1154) are mounted above one end of the processing box (2), an arc-shaped rod (1155) is slidably mounted on the top of the arc-shaped cylinder (1154), the bottom of the arc-shaped rod (1155) is connected to the limit block (1153), and the top of the arc-shaped rod (1155) is connected to the top inner wall of the arc-shaped cylinder (1154) via a spring.

5. The rotary kiln exhaust gas treatment device according to claim 1, characterized in that: The recycling mechanism (12) comprises an inclined plate (121), the inclined plate (121) being obliquely installed between the lower sides of the inner walls of the treatment box (2), a water outlet pipe (122) being provided on the lower side wall of one side of the treatment box (2), one side of the water outlet pipe (122) being connected to the water inlet of the plate heat exchanger (123), and the water outlet of the plate heat exchanger (123) being connected to the water tank (4) via the water inlet pipe (124).

6. The rotary kiln exhaust gas treatment device according to claim 1, characterized in that: A transparent observation window is provided below one end of the water tank (4).

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