Waste gas treatment device of rotary kiln

Abstract

The utility model discloses a waste gas treatment device of a rotary kiln, and relates to the technical field of waste gas treatment. The spraying device comprises a spraying tank, an air inlet assembly is arranged on the lower portion in the spraying tank, the air inlet assembly comprises mounting frames fixedly connected to the lower portions of the inner walls of the two sides of the spraying tank respectively, threaded rods are rotationally connected to the interiors of the mounting frames, sliding blocks are connected to the threaded rods in a threaded mode, and a same lifting plate is fixedly connected between every two adjacent sliding blocks; a dehumidification assembly is further arranged on the upper portion of the interior of the spraying tank. The gas outlet cover is driven to ascend and descend through the threaded rod and the lifting plate in the mounting frame, the gas inlet height is adjusted, the problem that the gas inlet height of waste gas is inconvenient to adjust in the prior art is solved, meanwhile, the sprayed waste gas is primarily dehumidified through the condensation pipe and the condensation plate, and the waste gas is purified. And the waste gas is secondarily dehumidified through the water absorption filler on the partition plate, so that the problem that the sprayed waste gas is inconvenient to dehumidify in the prior art is solved.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to a waste gas treatment device for a rotary kiln. Background Technology

[0002] A rotary kiln, also known as a rotary bed kiln, is a long cylindrical high-temperature device made of rolled steel plates and lined with refractory materials. It rotates slowly through a motor and gear system and is commonly used in the cement, metallurgical, and chemical industries. During the use of a rotary kiln, a large amount of waste gas is generated. In order to reduce the harm of the waste gas from the rotary kiln, a waste gas treatment device is usually installed at the outlet end of the rotary kiln.

[0003] A document with the existing authorization announcement number CN221015226U discloses a waste gas treatment device for a rotary kiln used in molybdenum oxide production, including a treatment tank. Three support legs are fixedly installed at the lower outer end of the treatment tank. The device is characterized by: an air inlet on the lower outer wall of the treatment tank; a mist nozzle evenly distributed around the inner center of the treatment tank and connected to a water filtration mechanism for the first filtration of the waste gas entering the treatment tank; and a filter plate mechanism installed in the upper inner part of the treatment tank for the second filtration of the waste gas. The filter plate mechanism includes a filter plate assembly and a top cover mounting assembly, with the filter plate assembly installed at the lower end of the top cover mounting assembly and positioned inside the treatment tank via the top cover mounting assembly.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. The exhaust gas treatment device mentioned above introduces the exhaust gas generated by the rotary kiln into the treatment tank for filtration through the air inlet. However, since the positions of the air inlet and the water filtration mechanism on the treatment tank are fixed, it is not convenient to adjust the distance between the air inlet and the water filtration mechanism according to the needs, which makes it inconvenient to filter exhaust gas of different properties.

[0006] 2. The exhaust gas treatment device mentioned above performs preliminary filtration of exhaust gas through a water filtration mechanism and secondary filtration of exhaust gas through a filter plate mechanism. However, during use, the water filtration mechanism removes dust from the exhaust gas by spraying water mist. The presence of water mist will cause the exhaust gas to be in a humid state, which will cause fine particles in the exhaust gas to easily adhere to the filter plate mechanism or the exhaust port.

[0007] To address these issues, we provide a waste gas treatment device for rotary kilns. Utility Model Content

[0008] The purpose of this utility model is to provide a waste gas treatment device for a rotary kiln. By using the threaded rod and lifting plate in the mounting frame to drive the exhaust hood to rise and fall, the inlet height can be adjusted, solving the problem of the inconvenience of adjusting the waste gas inlet height in existing systems. At the same time, the waste gas after spraying is initially dehumidified by the condenser pipe and condenser plate, and then dehumidified again by the water-absorbing packing on the partition plate, solving the problem of the inconvenience of dehumidifying the waste gas after spraying in existing systems.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0010] This utility model relates to a waste gas treatment device for a rotary kiln, comprising a spray tank. An air inlet assembly is located at the lower interior of the spray tank. The air inlet assembly includes mounting frames fixedly connected to the lower inner walls on both sides of the spray tank. Each mounting frame has a threaded rod rotatably connected to its interior, and each threaded rod has a slider threadedly connected to it. A lifting plate is fixedly connected between adjacent sliders. An exhaust hood is fixedly connected to the surface of the lifting plate. A baffle is fixedly connected to the top of the exhaust hood. A telescopic joint is fixedly connected to the bottom of the exhaust hood. An air inlet pipe is fixedly connected to the bottom end of the telescopic joint. The bottom end of the air inlet pipe extends to the lower outer front end of the spray tank. A dehumidification assembly is also located at the upper interior of the spray tank. The dehumidification assembly includes a dehumidification frame fixedly connected to the upper interior of the spray tank. A condenser pipe is fixedly connected to the lower interior of the dehumidification frame. A condenser plate is fixedly connected to the outer wall of the condenser pipe. A partition is fixedly connected to the center of the dehumidification frame. Multiple ventilation holes are evenly distributed on the surface of the partition. A water tank for supplying water to the condenser pipe is also fixedly connected to the upper front end of the spray tank.

[0011] A further feature of this invention is that the bottom end of the threaded rod extends to the lower outer side of the mounting frame and is fixedly connected to a first bevel gear; a drive rod is rotatably connected to the lower part of the mounting frame; the front end of the drive rod extends to the front outer side of the spray tank; a second bevel gear is fixedly connected to the outer wall of the drive rod; and the second bevel gear meshes with the lower part of the first bevel gear.

[0012] A further feature of this invention is that a mounting base is fixedly connected to the bottom rear end of the mounting frame, the rear end of the drive rod is rotatably connected to the mounting base, and a handwheel is fixedly connected to the front end of the drive rod.

[0013] A further feature of this invention is that a synchronous pulley is fixedly connected to a section of the drive rod located on the outside of the spray tank, and the synchronous pulleys are connected by a synchronous belt drive.

[0014] A further feature of this invention is that a top cover is fixedly connected to the top of the spray tank, and an air outlet pipe is fixedly connected to the center of the surface of the top cover; a bottom cover is fixedly connected to the bottom of the spray tank, and a drain pipe is fixedly connected to the center of the surface of the bottom cover.

[0015] A further feature of this invention is that a water pump is fixedly connected to one side of the inside of the water tank, a water outlet pipe is fixedly connected to the outlet end of the water pump, the end of the water outlet pipe away from the water pump is fixedly connected to the inlet end of the condenser pipe, a return water pipe is fixedly connected to the outlet end of the condenser pipe, and the end of the return water pipe away from the condenser pipe extends to the other side of the inside of the water tank.

[0016] A further feature of this invention is that an L-shaped frame is fixedly connected to the bottom of the water tank, and the vertical support arm of the L-shaped frame is fixedly connected above the front end face of the spray tank.

[0017] A further feature of this invention is that multiple cooling fans are fixedly connected at equal intervals along the horizontal direction on the top of the water tank.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting up an air intake component, rotates a handwheel, which drives a drive rod to rotate. The drive rod drives a threaded rod to rotate through a first bevel gear and a second bevel gear. The threaded rod drives a lifting plate to move through a slider, thereby driving the air outlet hood to rise and fall through the lifting plate, thus realizing the adjustment of the air intake height of the exhaust gas and facilitating the intake of exhaust gas.

[0020] 2. This utility model, by setting up a dehumidification component and starting a water pump, introduces cold water from the water tank into the condenser tube, thereby reducing the surface temperature of the condenser tube and condenser plate. This causes the exhaust gas flowing through the condenser tube and condenser plate to condense, thus removing some of the moisture from the exhaust gas. At the same time, the water-absorbing packing on the partition further dehumidifies the exhaust gas, achieving dehumidification of the exhaust gas after spraying. This avoids excessive moisture content in the exhaust gas after spraying dust removal and reduces the waste of spraying water. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the air intake assembly of this utility model;

[0024] Figure 3 This is an anatomical diagram of the mounting frame and drive rod of this utility model.

[0025] Figure 4 This is a structural disassembly diagram of the lifting plate and the air vent of this utility model;

[0026] Figure 5 This is a schematic diagram of the dehumidification component of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the condenser tube of this utility model;

[0028] Figure 7 This is a structural disassembly diagram of the water tank of this utility model;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1-Spray tank, 101-Top cover, 102-Air outlet pipe, 103-Bottom cover, 104-Drain pipe, 2-Air inlet assembly, 201-Mounting frame, 201a-Threaded rod, 201b-First bevel gear, 202-Lifting plate, 202a-Slider, 203-Drive rod, 203a-Second bevel gear, 203b-Mounting base, 203c-Handwheel, 203d-Synchronizing pulley, 203 e-Synchronous belt, 204-Air outlet hood, 204a-Baffle, 205-Expansion joint, 206-Air inlet pipe, 3-Dehumidification assembly, 301-Dehumidification frame, 302-Baffle, 302a-Ventilation hole, 303-Condenser pipe, 303a-Water pump, 303b-Water outlet pipe, 303c-Water return pipe, 304-Condenser plate, 305-Water tank, 305a-L-shaped frame, 305b-Cooling fan. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this is the first embodiment of the present invention. This embodiment provides a waste gas treatment device for a rotary kiln, including a spray tank 1. An air inlet assembly 2 is provided at the lower part of the interior of the spray tank 1. The air inlet assembly 2 includes a mounting frame 201, a lifting plate 202, an exhaust hood 204, a telescopic joint 205, and an air inlet pipe 206. The exhaust hood 204 is raised and lowered by the threaded rod 201a in the mounting frame 201 and the lifting plate 202, thereby realizing the adjustment of the air inlet height and solving the problem of the existing inconvenience in adjusting the exhaust gas inlet height.

[0033] Specifically, two mounting frames 201 are provided and fixedly connected to the lower inner walls on both sides of the spray tank 1. Each mounting frame 201 has a threaded rod 201a rotatably connected inside. Each threaded rod 201a has a slider 202a threadedly connected to it. The two adjacent sliders 202a are fixedly connected to the same lifting plate 202. An air vent 204 is fixedly connected to the surface of the lifting plate 202. A baffle 204a is fixedly connected to the top of the air vent 204. A telescopic joint 205 is fixedly connected to the bottom of the air vent 204. An air inlet pipe 2 is fixedly connected to the bottom end of the telescopic joint 205. 06. The bottom end of the air inlet pipe 206 extends to the lower outer front end of the spray tank 1. The mounting frame 201 is used to install the threaded rod 201a and other structures. The threaded rod 201a and the slider 202a are used to install the lifting plate 202 and drive the lifting plate 202 to rise and fall. The exhaust hood 204 and the baffle 204a are used to evenly transport the exhaust gas of the rotary kiln into the spray tank 1. The expansion joint 205 is used to connect the exhaust hood 204 and the air inlet pipe 206. The air inlet pipe 206 is used to connect the exhaust gas outlet pipe of the rotary kiln.

[0034] Furthermore, the bottom end of the threaded rod 201a extends to the lower outer side of the mounting frame 201 and is fixedly connected to the first bevel gear 201b. The lower part of the mounting frame 201 is rotatably connected to the drive rod 203. The front end of the drive rod 203 extends to the front outer side of the spray tank 1. The outer wall of the drive rod 203 is fixedly connected to the second bevel gear 203a, which meshes with the lower part of the first bevel gear 201b.

[0035] The bottom rear end of the mounting frame 201 is fixedly connected to the mounting base 203b, the rear end of the drive rod 203 is rotatably connected to the mounting base 203b, and the front end of the drive rod 203 is fixedly connected to the handwheel 203c.

[0036] A synchronous pulley 203d is fixedly connected to a section of the drive rod 203 located on the outside of the spray tank 1. The synchronous pulleys 203d are connected to each other by a synchronous belt 203e.

[0037] A top cover 101 is fixedly connected to the top of the spray tank 1, and an air outlet pipe 102 is fixedly connected to the center of the surface of the top cover 101. A bottom cover 103 is fixedly connected to the bottom of the spray tank 1, and a sewage pipe 104 is fixedly connected to the center of the surface of the bottom cover 103. A spray structure is also provided in the center of the interior of the spray tank 1.

[0038] The operation process of this embodiment is as follows: rotate the handwheel 203c, which drives the drive rod 203 to rotate. The drive rod 203 drives the threaded rod 201a to rotate through the first bevel gear 201b and the second bevel gear 203a. The threaded rod 201a drives the lifting plate 202 to move through the slider 202a, thereby driving the exhaust hood 204 to rise and fall through the lifting plate 202, thus realizing the adjustment of the exhaust gas intake height. Example 2

[0039] Please see Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: a dehumidification component 3 is also provided above the interior of the spray tank 1. The dehumidification component 3 includes a dehumidification frame 301, a condenser pipe 303, a condenser plate 304, a partition plate 302, and a water tank 305. The condenser pipe 303 and the condenser plate 304 perform preliminary dehumidification of the sprayed exhaust gas, and the water-absorbing packing on the partition plate 302 performs secondary dehumidification of the exhaust gas, thus solving the problem of the existing inconvenience in dehumidifying the sprayed exhaust gas.

[0040] Specifically, the dehumidification frame 301 is fixedly connected to the upper interior of the spray tank 1. A condenser pipe 303 is fixedly connected to the lower interior of the dehumidification frame 301. A condenser plate 304 is fixedly connected to the outer wall of the condenser pipe 303. A partition plate 302 is fixedly connected to the center of the interior of the dehumidification frame 301. Multiple ventilation holes 302a are evenly opened on the surface of the partition plate 302. A water tank 305 is also fixedly connected to the upper front end of the spray tank 1. The dehumidification frame 301 is used to install the condenser pipe 303 and other structures. The condenser pipe 303 and the condenser plate 304 are used to perform preliminary dehumidification of the exhaust gas after spraying. The partition plate 302 is used to divide the internal space of the dehumidification frame 301, and the partition plate 302 is filled with water-absorbing filler. The ventilation holes 302a are used to ensure that the exhaust gas can circulate in the dehumidification frame 301. The water tank 305 is used to provide cold water to the condenser pipe 303.

[0041] Furthermore, a water pump 303a is fixedly connected to one side of the interior of the water tank 305. The outlet end of the water pump 303a is fixedly connected to an outlet pipe 303b. The end of the outlet pipe 303b away from the water pump 303a is fixedly connected to the inlet end of the condenser pipe 303. The outlet end of the condenser pipe 303 is fixedly connected to a return pipe 303c. The end of the return pipe 303c away from the condenser pipe 303 extends to the other side of the interior of the water tank 305.

[0042] An L-shaped frame 305a is fixedly connected to the bottom of the water tank 305, and the vertical support arm of the L-shaped frame 305a is fixedly connected above the front end face of the spray tank 1; multiple cooling fans 305b are fixedly connected to the top of the water tank 305 at equal intervals along the horizontal direction; the rest of the structure is the same as in Embodiment 1.

[0043] The operation process of this embodiment is as follows: start the water pump 303a, and introduce the cold water in the water tank 305 into the condenser tube 303 through the water pump 303a, thereby reducing the surface temperature of the condenser tube 303 and the condenser plate 304, so that the exhaust gas flowing through the condenser tube 303 and the condenser plate 304 will condense, thereby removing some of the moisture in the exhaust gas. At the same time, the water-absorbing packing on the partition plate 302 will further dehumidify the exhaust gas, thus realizing the dehumidification of the exhaust gas after spraying.

[0044] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A waste gas treatment device for a rotary kiln, comprising a spray tank (1), characterized in that: An air intake assembly (2) is provided at the lower interior of the spray tank (1). The air intake assembly (2) includes mounting frames (201) fixedly connected to the lower interior walls on both sides of the spray tank (1). Threaded rods (201a) are rotatably connected inside each mounting frame (201), and sliders (202a) are threadedly connected to each threaded rod (201a). The same lifting plate (202) is fixedly connected between two adjacent sliders (202a). An air outlet hood (204) is fixedly connected to the surface of the lifting plate (202). A baffle (204a) is fixedly connected to the top of the air outlet hood (204), and a telescopic joint (205) is fixedly connected to the bottom of the air outlet hood (204). An air intake pipe is fixedly connected to the bottom end of the telescopic joint (205). (206), and the bottom end of the air inlet pipe (206) extends to the lower outer front end of the spray tank (1). A dehumidification component (3) is also provided on the upper inside of the spray tank (1). The dehumidification component (3) includes a dehumidification frame (301) fixedly connected to the upper inside of the spray tank (1). A condenser pipe (303) is fixedly connected to the lower inside of the dehumidification frame (301). A condenser plate (304) is fixedly connected to the outer wall of the condenser pipe (303). A partition plate (302) is fixedly connected to the center inside the dehumidification frame (301). A plurality of ventilation holes (302a) are evenly opened on the surface of the partition plate (302). A water tank (305) for supplying water to the condenser pipe (303) is also fixedly connected to the upper front end of the spray tank (1).

2. The waste gas treatment device for a rotary kiln according to claim 1, characterized in that, The bottom end of the threaded rod (201a) extends to the lower outer side of the mounting frame (201) and is fixedly connected to a first bevel gear (201b). A drive rod (203) is rotatably connected to the lower side of the mounting frame (201). The front end of the drive rod (203) extends to the front outer side of the spray tank (1). A second bevel gear (203a) is fixedly connected to the outer wall of the drive rod (203). The second bevel gear (203a) meshes with the lower side of the first bevel gear (201b).

3. The waste gas treatment device for a rotary kiln according to claim 2, characterized in that, The bottom rear end of the mounting frame (201) is fixedly connected to a mounting base (203b), and the rear end of the drive rod (203) is rotatably connected to the mounting base (203b). The front end of the drive rod (203) is fixedly connected to a handwheel (203c).

4. The waste gas treatment device for a rotary kiln according to claim 2, characterized in that, The drive rod (203) is fixedly connected to a synchronous pulley (203d) on the outside of the spray tank (1), and the synchronous pulleys (203d) are connected by a synchronous belt (203e).

5. The waste gas treatment device for a rotary kiln according to claim 2, characterized in that, The top of the spray tank (1) is fixedly connected to a top cover (101), and the center of the surface of the top cover (101) is fixedly connected to an air outlet pipe (102). The bottom of the spray tank (1) is fixedly connected to a bottom cover (103), and the center of the surface of the bottom cover (103) is fixedly connected to a sewage pipe (104).

6. The waste gas treatment device for a rotary kiln according to claim 1, characterized in that, A water pump (303a) is fixedly connected to one side of the interior of the water tank (305), and the outlet end of the water pump (303a) is fixedly connected to an outlet pipe (303b). The end of the outlet pipe (303b) away from the water pump (303a) is fixedly connected to the inlet end of the condenser pipe (303), and the outlet end of the condenser pipe (303) is fixedly connected to a return pipe (303c). The end of the return pipe (303c) away from the condenser pipe (303) extends to the other side of the interior of the water tank (305).

7. The waste gas treatment device for a rotary kiln according to claim 1, characterized in that, The bottom of the water tank (305) is fixedly connected to an L-shaped frame (305a), and the vertical support arm of the L-shaped frame (305a) is fixedly connected above the front end face of the spray tank (1).

8. The waste gas treatment device for a rotary kiln according to claim 7, characterized in that, Multiple cooling fans (305b) are fixedly connected to the top of the water tank (305) at equal intervals along the horizontal direction.

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