Device for sealing kiln tail body of rotary kiln

Abstract

The utility model discloses a device for sealing a kiln tail body of a rotary kiln, which relates to the technical field of rotary kilns and is applied to the rotary kiln and the tail body, the back surface of the tail body is connected with an exhaust pipe, a plurality of stop blocks are arranged in the tail body, a rotating piece is rotatably connected in the tail body, a left inclined groove is arranged on the rotating piece, a right inclined groove is arranged in the tail body, and the tail body is provided with a plurality of baffle plates. The stop block can only exist at the intersection of the left inclined groove and the right inclined groove; according to the rotary kiln sealing structure, the stop blocks are arranged in the tail body, the rotary connecting piece is arranged in the tail body, the left inclined groove, the right inclined groove, the connecting column, the movable piece and the elastic piece are arranged, and the rubber pads are arranged on the contact faces of the stop blocks, so that the stop blocks can be freely opened and closed, and the state of the sealing structure can be flexibly adjusted according to different working states such as gas pressure and flow changes in the rotary kiln; meanwhile, the sealing tightness is guaranteed, the sealing effect is improved, gas leakage is reduced, the heat efficiency and production efficiency of the rotary kiln are improved, and pollution to the production environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, specifically to a device for sealing the tail of a rotary kiln. Background Technology

[0002] As a key piece of equipment widely used in industries such as cement, metallurgy, and chemicals, the sealing performance of the kiln tail has a crucial impact on the stable operation, production efficiency, energy conservation, and environmental protection of the equipment.

[0003] There are many problems that urgently need to be solved in the existing rotary kiln tail sealing technology.

[0004] Many kiln tail sealing devices only have a single sealing method and cannot be flexibly adjusted according to changes in the working conditions such as gas pressure and flow rate inside the kiln.

[0005] When the operating conditions inside the kiln change, the sealing effect is often greatly reduced, and gas leakage is likely to occur.

[0006] Gas leaks not only reduce the thermal efficiency of rotary kilns and waste energy, but can also pollute the production environment and endanger the health of operators.

[0007] In addition, existing technologies mostly lack effective automatic pressure relief mechanisms for controlling pressure inside the kiln.

[0008] If the pressure inside the kiln becomes too high and cannot be released in time, it is very likely to cause equipment damage or even serious safety accidents, resulting in huge economic losses and safety hazards for the enterprise.

[0009] Some devices with pressure relief functions have complex structures, which not only result in high installation and maintenance costs, but also make them prone to failure and have low reliability.

[0010] In view of the above, this application is hereby submitted. Utility Model Content

[0011] The purpose of this invention is to provide a device for sealing the tail of a rotary kiln, so as to solve the problems mentioned in the background art.

[0012] To solve the above-mentioned technical problems, this utility model provides a rotary kiln tail sealing device, which is applied to a rotary kiln and its tail. The tail is connected to an exhaust pipe on its back side, and multiple baffles are provided in the tail. A rotating plate is rotatably connected in the tail. The rotating plate has a left-tilting groove, and the tail has a right-tilting groove. The baffles can only exist at the intersection of the left-tilting groove and the right-tilting groove. A fixed plate is provided in the tail, and a movable plate is provided on the outside of the rotating plate. An elastic plate is provided between the fixed plate and the movable plate.

[0013] Furthermore, an airbag is provided in the tail body. The airbag is divided into fixed and movable ends. The movable end of the airbag is fixedly connected to the movable plate. One end of the air pipe is connected to the fixed end of the airbag, and the other end of the air pipe extends into the rotary kiln.

[0014] Furthermore, the stop block is provided with a connecting post, the two ends of which are slidably inserted into the corresponding left tilting groove and right tilting groove.

[0015] Furthermore, a rubber pad is provided between the contact surfaces of the stop blocks.

[0016] Furthermore, the stop block, the left tilting groove, the right tilting groove, and the connecting column are all arranged in a circular array with equal spacing.

[0017] Furthermore, the rotating plate is provided with two movable plates, and the elastic plate is connected to one of the movable plates. The outer wall of the movable plate abuts against the inner wall of the tail body.

[0018] Furthermore, the bottom surface of the rotary kiln is provided with multiple support platforms, and the top surface of the support platforms is provided with a rotary wheel platform that abuts against the rotary kiln. The rotary kiln is provided with an external gear, and a motor is provided below the rotary kiln. The output shaft of the motor is connected to a gear that meshes with the external gear.

[0019] Furthermore, protective sleeves are provided on both the external gear and the outer side of the gear.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] In this invention, by setting a stop block in the tail body, rotating connecting vanes, and setting a left tilting groove, a right tilting groove, a connecting column, a movable plate, an elastic plate, and a rubber pad on the contact surface of the stop block, multiple stops can be opened and closed freely. The sealing structure can be flexibly adjusted according to different working states inside the rotary kiln, such as changes in gas pressure and flow rate, while ensuring tightness of the seal, improving the sealing effect, reducing gas leakage, increasing the thermal efficiency and production efficiency of the rotary kiln, and reducing pollution to the production environment.

[0022] In this invention, an airbag is installed in the tail section, with its movable end fixedly connected to the movable plate. The fixed end extends into the rotary kiln through an air pipe. This allows for automatic pressure relief through a linkage mechanism of airbag-moving plate-rotating plate-stop when the pressure inside the rotary kiln is too high. This effectively prevents equipment damage or even safety accidents caused by excessive pressure inside the kiln, ensuring the safe and stable operation of the rotary kiln. Under normal operating conditions, it does not affect the sealing effect. The sealing and pressure relief functions are organically combined, improving the overall performance of the device. At the same time, the structure is relatively simple and compact, easy to install and maintain. The pressure sensing and pressure relief method based on physical principles reduces failure points, improves reliability, extends the service life of the rotary kiln and its auxiliary equipment, and reduces maintenance costs and replacement frequency. Attached Figure Description

[0023] Figure 1 A schematic diagram of the overall structure of a device for sealing the tail of a rotary kiln.

[0024] Figure 2 A schematic diagram of the sealing structure of a device for sealing the tail of a rotary kiln;

[0025] Figure 3 A schematic cross-sectional view of a device for sealing the tail of a rotary kiln.

[0026] Figure 4 An exploded view of the sealing structure of a device for sealing the tail section of a rotary kiln.

[0027] In the diagram: 1. Rotary kiln; 2. Tail body; 201. Exhaust pipe; 3. Stop block; 301. Rotating plate; 302. Left tilting groove; 303. Right tilting groove; 304. Connecting column; 305. Fixed plate; 306. Movable plate; 307. Elastic plate; 4. Airbag; 401. Air pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Please see Figure 1-4 This utility model provides a technical solution:

[0031] A device for sealing the tail of a rotary kiln is applied to a rotary kiln 1 and a tail 2. An exhaust pipe 201 is connected to the back of the tail 2. Multiple support platforms are provided on the bottom surface of the rotary kiln 1. A rotary wheel platform that abuts against the rotary kiln 1 is provided on the top surface of the support platforms. The rotary kiln 1 is equipped with an external gear. A motor is provided below the rotary kiln 1. The output shaft of the motor is connected to a gear that meshes with the external gear.

[0032] Rotary kiln 1 is placed on multiple support platforms. A rotary wheel platform is installed on the top surface of the support platform. The rotary wheel platform abuts against the rotary kiln 1 and provides support for the rotary kiln 1.

[0033] After the motor starts, the motor output shaft drives the gear connected to it to rotate. Since the gear meshes with the external gear on the rotary kiln 1, it drives the rotary kiln 1 to rotate around its own axis.

[0034] By setting up the support platform and the rotary table, stable support can be provided for the rotary kiln 1, ensuring that the rotary kiln 1 remains stable during operation, reducing equipment wear and failure caused by unstable support, and extending the service life of the equipment.

[0035] The motor drives the rotary kiln 1 to rotate through gear meshing with the external gear of the rotary kiln 1. This transmission method has high transmission efficiency and can accurately transmit the power of the motor to the rotary kiln 1, meeting the requirements of the rotary kiln 1 for speed and torque under different working conditions.

[0036] The exhaust pipe 201 can promptly discharge gas from the kiln, maintain pressure balance inside the kiln, and ensure the normal operation of the rotary kiln 1.

[0037] Furthermore, protective sleeves are provided on both the external gear and the outer side of the gear.

[0038] Protective sleeves are installed on the outer sides of the external gears and the gears connected to the motor to protect them from the influence of the external environment, such as dust and debris. They also prevent operators from accidentally coming into contact with the rotating gears, thus improving the safety of equipment operation.

[0039] It can protect gears, reduce gear damage caused by external factors, lower maintenance costs, prevent accidents to operators, and improve the overall safety of the equipment.

[0040] Furthermore, a stop block 3 is provided in the tail body 2, and a rotating plate 301 is rotatably connected in the tail body 2. Two movable plates 306 are provided on the rotating plate 301, and an elastic plate 307 is connected to one of the movable plates 306. The outer wall of the movable plate 306 abuts against the inner wall of the tail body 2.

[0041] The rotating plate 301 has a left tilting groove 302, and the tail body 2 has a right tilting groove 303. The stop block 3, the left tilting groove 302, the right tilting groove 303 and the connecting column 304 are all arranged in a circular array at equal intervals. Rubber pads are provided between the contact surfaces of the stop block 3.

[0042] The stop block 3 is provided with a connecting post 304. The two ends of the connecting post 304 are slidably inserted into the corresponding left tilting groove 302 and right tilting groove 303. The stop block 3 can only exist at the intersection of the left tilting groove 302 and right tilting groove 303. The tail body 2 is provided with a fixed piece 305. The outer side of the rotating piece 301 is provided with a movable piece 306. An elastic piece 307 is provided between the fixed piece 305 and the movable piece 306.

[0043] When the vane 301 rotates in the tail body 2, it drives the left tilting groove 302 to rotate accordingly.

[0044] Since the two ends of the connecting column 304 can slide in the left inclined groove 302 and the right inclined groove 303 respectively, and the left inclined groove 302 and the right inclined groove 303 have different inclination directions, the rotation of the rotating piece 301 will cause the connecting column 304 to move in the two grooves, thereby driving the stop block 3 to move at the intersection of the track formed by the left inclined groove 302 and the right inclined groove 303.

[0045] When the rotating plate 301 rotates in a specific direction, the stop block 3 can "open" as the connecting column 304 slides, and "close" otherwise, thus realizing the free opening and closing of multiple stop blocks 3.

[0046] During the rotation of the rotating plate 301, the movable plate 306 moves synchronously because it is connected to the rotating plate 301.

[0047] The elastic sheet 307 is located between the fixed sheet 305 and the movable sheet 306, and will undergo elastic deformation due to the change in the position of the movable sheet 306.

[0048] The elastic force generated by this elastic deformation ensures that the movable piece 306 remains in close contact with the inner wall of the tail body 2. Simultaneously, the rubber pads between the contact surfaces of the stop blocks 3 further fill the gaps when the stop blocks 3 are closed, working in conjunction with the close contact of the movable piece 306 with the inner wall of the tail body 2 to ensure overall sealing tightness and improve the sealing effect.

[0049] Multiple baffles 3 can be opened and closed freely, and the sealing structure can be flexibly adjusted according to different working conditions inside the rotary kiln 1, such as changes in gas pressure and flow rate.

[0050] For example, when it is necessary to adjust the gas flow rate, the control block 3 can be opened or closed by rotating the vane 301 to change the size of the gas channel, thereby achieving effective control of the gas while ensuring sealing performance under different working conditions.

[0051] The elastic plate 307 ensures that the movable plate 306 is always in close contact with the inner wall of the tail body 2, which can adapt to the slight deformation or pressure fluctuations that may occur inside the tail body 2, and ensure the tightness of the seal.

[0052] The rubber pads between the contact surfaces of the baffle 3 further enhance the sealing effect when the baffle 3 is closed, reducing gas leakage, improving the thermal efficiency and production efficiency of the rotary kiln 1, and reducing pollution to the production environment.

[0053] Furthermore, an airbag 4 is provided in the tail body 2. The airbag 4 is divided into fixed and movable ends. The movable end of the airbag 4 is fixedly connected to the movable plate 306. The fixed end of the airbag 4 is connected to one end of the air pipe 401, and the other end of the air pipe 401 extends into the rotary kiln 1.

[0054] When the pressure inside the rotary kiln 1 is normal, the air bag 4 is in a relatively stable state. The movable plate 306 is in close contact with the inner wall of the tail body 2 under the action of the elastic plate 307, and the baffle 3 remains in its original position to maintain a sealed state. Once the pressure inside the kiln is too high, gas rushes into the air bag 4 along the air pipe 401.

[0055] The airbag 4 expands as it is filled with gas, and its movable end is displaced by the expansion force, which pushes the connected movable piece 306 to rotate.

[0056] The rotation of the movable plate 306 drives the rotating plate 301 to rotate, thereby changing the position of the left tilting groove 302.

[0057] Since the two ends of the connecting column 304 slide in the left inclined groove 302 and the right inclined groove 303 respectively, the change in position of the left inclined groove 302 causes the connecting column 304 to move, thereby causing the stop block 3 to move along the track formed by the left inclined groove 302 and the right inclined groove 303, and finally the stop blocks 3 move away from each other.

[0058] The separation of the baffle 3 creates gaps in the originally relatively sealed space inside the tail body 2, allowing high-pressure gas inside the kiln to escape through these gaps and achieve automatic pressure relief.

[0059] When the pressure is too high, it will automatically react and release pressure through the linkage mechanism of air bag 4-moving plate 306-rotating plate 301-stop block 3. This effectively avoids equipment damage or even safety accidents caused by excessive pressure in the kiln and ensures the safe and stable operation of rotary kiln 1.

[0060] Under normal operating conditions, the airbag 4 does not affect the tight contact between the movable piece 306 and the inner wall of the tail body 2, nor the sealing effect of the baffle 3.

[0061] When pressure relief is needed, it can respond quickly by using the expansion of airbag 4 to push the moving parts to relieve pressure, thus organically combining sealing and pressure relief functions and improving the overall performance of the device.

[0062] By utilizing the existing internal structure of the tail section 2, an airbag 4 and an air tube 401 are added to achieve an automatic decompression function. The structure is relatively simple and compact, and easy to install and maintain.

[0063] This pressure sensing and decompression method based on physical principles eliminates the need for complex electronic control systems, reducing potential points of failure and improving reliability.

[0064] By timely depressurization, the rotary kiln 1 is prevented from being under excessively high pressure for a long time, which reduces the pressure load on the kiln body and related components, reduces equipment wear and fatigue damage, thereby extending the service life of the rotary kiln 1 and its auxiliary equipment, and reducing equipment maintenance costs and replacement frequency.

Claims

1. A device for sealing the tail section of a rotary kiln, applied to a rotary kiln (1) and a tail section (2), wherein an exhaust pipe (201) is connected to the back side of the tail section (2), characterized in that: The tail body (2) is provided with multiple stops (3), and a rotating plate (301) is rotatably connected to the tail body (2). A left tilting groove (302) is provided on the rotating plate (301), and a right tilting groove (303) is provided in the tail body (2). The stops (3) can only exist at the intersection of the left tilting groove (302) and the right tilting groove (303). A fixed plate (305) is provided in the tail body (2), and a movable plate (306) is provided on the outside of the rotating plate (301). An elastic plate (307) is provided between the fixed plate (305) and the movable plate (306).

2. The device for sealing the tail of a rotary kiln as described in claim 1, characterized in that: An airbag (4) is provided in the tail body (2). The airbag (4) is divided into fixed and movable ends. The movable end of the airbag (4) is fixedly connected to the movable plate (306). The fixed end of the airbag (4) is connected to one end of the air pipe (401). The other end of the air pipe (401) extends into the rotary kiln (1).

3. The device for sealing the tail of a rotary kiln as described in claim 2, characterized in that: The stop block (3) is provided with a connecting post (304), and the two ends of the connecting post (304) are slidably inserted into the corresponding left tilting groove (302) and right tilting groove (303).

4. The device for sealing the tail of a rotary kiln as described in claim 3, characterized in that: A rubber pad is provided between the contact surfaces of the stop (3).

5. The device for sealing the tail of a rotary kiln as described in claim 4, characterized in that: The stop block (3), the left tilting groove (302), the right tilting groove (303), and the connecting column (304) are all arranged in a circular array with equal spacing.

6. The device for sealing the tail of a rotary kiln as described in claim 5, characterized in that: The rotating plate (301) is provided with two movable plates (306), and the elastic plate (307) is connected to one of the movable plates (306). The outer wall of the movable plate (306) abuts against the inner wall of the tail body (2).

7. The device for sealing the tail of a rotary kiln as described in claim 6, characterized in that: The bottom surface of the rotary kiln (1) is provided with multiple support platforms, and the top surface of the support platforms is provided with a rotary wheel platform that abuts against the rotary kiln (1). The rotary kiln (1) is provided with an external gear, and a motor is provided below the rotary kiln (1). The output shaft of the motor is connected to a gear that meshes with the external gear.

8. The device for sealing the tail of a rotary kiln as described in claim 7, characterized in that: The external gear and the outer side of the gear are both provided with protective sleeves.

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