Medical waste incineration tail gas treatment mechanism

Abstract

The utility model relates to tail gas treatment field, concretely relates to a kind of medical waste incineration tail gas treatment mechanism, including support and the first cooling pipe being fixed on the support, the first cooling pipe lower end one side is equipped with air inlet pipe, the upper end of the first cooling pipe is open structure, the mechanism further includes: the second cooling pipe is sleeved on the first cooling pipe, the top of the second cooling pipe is equipped with shaft hole.The utility model is driven by motor to form multilayer uniform water curtain, and the efficiency of gas-liquid contact and the rate of temperature drop are greatly improved;Spiral plate prolongs tail gas path and residence time, enhances heat exchange and promotes turbulence, breaks thermal boundary layer;Water baffle and water block effectively prevent cooling water backflow, ensure system stability;Radiating fin and active air cooling system synergistic strengthen heat dissipation, further improve cooling efficiency.The overall structure is compact, solves the problem of uneven heat exchange, low efficiency and easy to block of traditional device.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment, and in particular to a medical waste incineration exhaust gas treatment device. Background Technology

[0002] The exhaust gas generated during the incineration of medical waste is characterized by high temperature, complex composition, and the presence of harmful substances and particulate matter. If emitted directly without effective treatment, it will cause serious harm to the environment and human health. Therefore, exhaust gas treatment is an indispensable part of the medical waste incineration system, and cooling treatment, as a pre-treatment step, is crucial for subsequent purification and emission control. Currently, common exhaust gas cooling methods mainly include direct spray cooling and indirect heat exchange cooling. Direct spray cooling achieves rapid cooling by spraying cooling water into the exhaust gas and utilizing the heat absorption of water vaporization. However, traditional spray methods often suffer from uneven water mist distribution, low heat exchange efficiency, and the risk of water backflow, affecting the stable operation of the system. Indirect heat exchange cooling uses heat exchangers for heat exchange. Although it avoids water-air contact, the equipment is large and costly, and its heat exchange efficiency is prone to decrease due to dust accumulation. In addition, most existing cooling devices have simple structures, short residence time of exhaust gas in the equipment, and insufficient heat exchange, resulting in limited cooling effect, especially under high load or high temperature conditions. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose a medical waste incineration exhaust gas treatment mechanism to solve the technical problems in the prior art.

[0004] To achieve the above objectives, this utility model provides a medical waste incineration exhaust gas treatment mechanism, including a support frame and a first cooling pipe fixed to the support frame. An air inlet pipe is fixed to one side of the lower end of the first cooling pipe, and the upper end of the first cooling pipe has an open structure. The mechanism further includes: A second cooling tube is fitted onto the first cooling tube. The top of the second cooling tube is provided with a shaft hole, and an air outlet tube is fixed to one side of the lower end of the second cooling tube. A water pipe is rotatably installed inside the first cooling pipe. Multiple spray heads are equidistantly arranged on the surface of the water pipe along the axial direction. A connecting shaft is provided at the top of the water pipe. The connecting shaft is rotatably installed in the shaft hole through a bearing. A motor is fixedly installed on the top of the second cooling pipe, and the output end of the motor is fixedly connected to the connecting shaft; When the exhaust gas enters the first cooling pipe through the intake pipe, the motor drives the connecting shaft to rotate, which in turn drives the water pipe and multiple spray heads to rotate and spray cooling water to cool the exhaust gas.

[0005] Preferably, a water shield is fixed to the inner wall of the first cooling pipe and above the air inlet pipe, and the extended end of the water shield extends downward in an arc shape.

[0006] Preferably, the bottom wall of the air outlet end of the air inlet pipe is provided with a water baffle block, the cross-section of the water baffle block is wedge-shaped, and its thickness gradually increases from the air outlet end to the inside.

[0007] Preferably, each set of the spray heads includes at least one nozzle arranged radially along the water pipe.

[0008] Preferably, a sealing element is provided between the lower end of the water pipe and the bottom of the first cooling pipe. The sealing element is a cartridge mechanical seal, with its inner ring rotatably engaged with the water pipe and its outer ring fixedly connected to the first cooling pipe.

[0009] Preferably, the motor is a worm gear reducer motor.

[0010] Preferably, a spiral plate is fixedly connected between the inner wall of the second cooling tube and the outer wall of the first cooling tube, and the spiral plate forms a spiral airflow channel inside the second cooling tube.

[0011] Preferably, the outer wall of the second cooling tube is fixed with multiple heat dissipation fins at equal intervals along the circumferential direction, and the cross-section of the heat dissipation fins is a wedge shape that gradually thins from the root to the tip.

[0012] Preferably, a fan blade is also fixedly installed on the output shaft of the motor, and an air guide cover is fixed above the fan blade.

[0013] The beneficial effects of this invention are as follows: The medical waste incineration exhaust gas treatment mechanism of this invention utilizes a motor-driven rotating water pipe spray system to form a multi-layered, uniform water curtain, significantly improving gas-liquid contact efficiency and cooling rate. The spiral plate extends the exhaust gas path and residence time, enhancing heat exchange and promoting turbulence, thus breaking down the thermal boundary layer. The water shield and baffle effectively prevent cooling water backflow, ensuring system stability. The heat dissipation fins and active air-cooling system work together to enhance heat dissipation, further improving cooling efficiency. The overall structure is compact, solving problems such as uneven heat exchange, low efficiency, and easy clogging in traditional devices. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the main cross-section of the present invention; Figure 3 This is a three-dimensional structural diagram of the spiral plate of this utility model; Figure 4 This is a frontal sectional view of the present invention.

[0016] The diagram is marked as follows: 1. Bracket; 2. First cooling pipe; 201. Water shield; 3. Air inlet pipe; 301. Water baffle; 4. Second cooling pipe; 5. Air outlet pipe; 6. Water pipe; 601. Spray head; 7. Motor; 8. Spiral plate; 9. Heat dissipation fins; 10. Fan blades; 11. Air guide cover. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] The first aspect of this utility model proposes a medical waste incineration exhaust gas treatment mechanism, such as... Figure 1-4 As shown, the device includes a bracket 1 and a first cooling pipe 2 fixed to the bracket 1. An air inlet pipe 3 is fixed to one side of the lower end of the first cooling pipe 2. The upper end of the first cooling pipe 2 is open. It should be noted that a drain pipe is installed on one side of the bottom of the first cooling pipe 2 for filtering the cooled water. The mechanism also includes: The second cooling pipe 4 is fitted onto the first cooling pipe 2. The top of the second cooling pipe 4 is provided with a shaft hole, and an air outlet pipe 5 is fixed to one side of the lower end of the second cooling pipe 4. A water pipe 6 is rotatably installed inside the first cooling pipe 2. Multiple spray heads 601 are equidistantly arranged on the surface of the water pipe 6 along the axial direction. A connecting shaft is provided at the top of the water pipe 6. The connecting shaft is rotatably installed in the shaft hole through a bearing. The motor 7 is fixedly installed on the top of the second cooling pipe 4, and the output end of the motor 7 is fixedly connected to the connecting shaft; When the exhaust gas enters the first cooling pipe 2 through the intake pipe 3, the motor 7 drives the connecting shaft to rotate, which in turn drives the water pipe 6 and multiple spray heads 601 to rotate and spray cooling water to cool the exhaust gas.

[0020] In the cooling treatment of medical waste incineration flue gas, an external air pump is first connected to the end of the exhaust pipe 5 to extract the flue gas and send it into the flue gas purifier for filtration and purification. When the incineration flue gas enters the first cooling pipe 2 through the intake pipe 3, a water source is connected to the lower end of the water pipe 6. The water source is transported to the inside of the water pipe 6 by a delivery pump and then sprayed into the first cooling pipe 2 by the spray head 601. The motor 7 drives the connecting shaft fixed at the top of the water pipe 6 to rotate, causing the sprayed water mist to rotate and thus cool the inside of the first cooling pipe 2. A multi-layered water curtain is formed. Under the action of the air pump at the end of the exhaust pipe 5, the high-temperature exhaust gas flows upward and passes through the second cooling pipe 4. The multi-layered water curtain exchanges heat with the flowing exhaust gas, which greatly improves the gas-liquid contact efficiency and cooling rate. At the same time, it reduces dust particles in the exhaust gas. The cooled exhaust gas flows from the top of the first cooling pipe 2 to the second cooling pipe 4 for further cooling, thereby extending the exhaust gas path and residence time, enhancing the heat exchange efficiency and improving the cooling effect.

[0021] In this embodiment, a water shield 201 is fixed to the inner wall of the first cooling pipe 2 and above the air intake pipe 3. The extended end of the water shield 201 extends downward in an arc shape. It should be noted that the water shield 201 is used to prevent the sprayed cooling water from flowing back into the air intake pipe 3 through the side wall of the first cooling pipe 2, thus avoiding the problem of cooling water backflow.

[0022] In this embodiment, a water baffle 301 is provided on the bottom wall of the air outlet end of the air inlet pipe 3. The cross-section of the water baffle 301 is wedge-shaped, and its thickness gradually increases from the air outlet end inward. It should be added that the water baffle 301 further prevents the backflow of cooling water.

[0023] In this embodiment, each set of spray heads 601 includes at least one nozzle, which is arranged radially along the water pipe 6. It should be noted that multiple spray heads 601 can be fixed at equal intervals along the circumference. When the spray heads 601 spray cooling water, multiple water curtains are formed by the rotation of the spray heads 601. After the exhaust gas passes through the water curtain, the temperature of the exhaust gas can be greatly reduced, and the particulate matter in the exhaust gas can be precipitated. In addition, it can cool the first cooling pipe 2, thus playing multiple roles.

[0024] In this embodiment, a sealing element is provided between the lower end of the water pipe 6 and the bottom of the first cooling pipe 2. The sealing element is a manifold mechanical seal, with its inner ring rotatably engaged with the water pipe 6 and its outer ring fixedly connected to the first cooling pipe 2. It should be noted that the sealing element is preferably a manifold mechanical seal, which allows the water pipe 6 to rotate freely inside the first cooling pipe 2 while effectively sealing the bottom of the first cooling pipe 2. A rotary joint is installed at the bottom of the water pipe 6, and an external water source is connected to the rotary joint via a delivery pump, allowing cooling water to be pumped into the water pipe 6.

[0025] In this embodiment: Motor 7 is a worm gear reducer motor. Its output shafts at both ends are coaxial with the motor rotor, allowing the shaft to be directly fixed and power to be output synchronously.

[0026] In this embodiment, a spiral plate 8 is fixedly connected between the inner wall of the second cooling pipe 4 and the outer wall of the first cooling pipe 2. The spiral plate 8 forms a spiral airflow channel inside the second cooling pipe 4. It should be added that by setting the spiral airflow channel, the exhaust gas path and residence time are greatly extended, and turbulence is forced to be generated, breaking the thermal boundary layer, greatly enhancing the heat exchange efficiency, while making the structure more compact and able to effectively cope with thermal stress.

[0027] In this embodiment, multiple heat dissipation fins 9 are fixed at equal intervals along the circumferential direction on the outer wall of the second cooling pipe 4. The cross-section of the heat dissipation fins 9 is wedge-shaped, gradually thinning from the root to the tip. It should be noted that, according to the principle of heat conduction, the temperature at the root of the fin is the highest, requiring more material to conduct heat; while the temperature at the tip is lower, requiring less heat to conduct. The gradually thinning design ensures the conduction capacity at the root while reducing unnecessary weight and wind resistance at the tip, enhancing heat dissipation performance and further improving the cooling efficiency of the exhaust gas.

[0028] In this embodiment, a fan blade 10 is also fixedly mounted on the output shaft of the motor 7, and an air guide shroud 11 is fixed above the fan blade 10. While the motor 7 drives the water pipe 6 to rotate at its output end, the motor 7 also drives the fan blade 10 to rotate. Under the action of the air guide shroud 11, the airflow around the heat dissipation fins 9 is accelerated, further improving the heat dissipation efficiency of the heat dissipation fins 9 and enhancing the cooling efficiency of the exhaust gas.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A medical waste incineration tail gas treatment mechanism, comprising a support (1) and a first cooling pipe (2) fixed on the support (1), and a gas inlet pipe (3) is fixed on one side of the lower end of the first cooling pipe (2), characterized in that, The upper end of the first cooling tube (2) has an open structure, and the mechanism further includes: A second cooling pipe (4) is fitted onto the first cooling pipe (2). The top of the second cooling pipe (4) is provided with a shaft hole, and an air outlet pipe (5) is fixed on one side of the lower end of the second cooling pipe (4). A water pipe (6) is rotatably installed inside the first cooling pipe (2). Multiple sets of spray heads (601) are equidistantly arranged on the surface of the water pipe (6) along the axial direction. A connecting shaft is provided at the top of the water pipe (6). The connecting shaft is rotatably installed in the shaft hole through a bearing. A motor (7) is fixedly installed on the top of the second cooling pipe (4), and the output end of the motor (7) is fixedly connected to the connecting shaft; When the exhaust gas enters the first cooling pipe (2) through the intake pipe (3), the motor (7) drives the connecting shaft to rotate, which in turn drives the water pipe (6) and multiple spray heads (601) to rotate and spray cooling water to cool the exhaust gas.

2. The medical waste incineration exhaust gas treatment device according to claim 1, characterized in that, A water shield (201) is fixed on the inner wall of the first cooling pipe (2) and above the air inlet pipe (3), and the extended end of the water shield (201) extends downward in an arc shape.

3. The medical waste incineration exhaust gas treatment device according to claim 2, characterized in that, The bottom wall of the air outlet end of the air inlet pipe (3) is provided with a water baffle (301). The cross section of the water baffle (301) is wedge-shaped, and its thickness gradually increases from the air outlet end to the inside.

4. The medical waste incineration exhaust gas treatment device according to claim 1, characterized in that, Each set of the spray heads (601) includes at least one nozzle arranged radially along the water pipe (6).

5. A medical waste incineration exhaust gas treatment device according to claim 1, characterized in that, A sealing element is provided between the lower end of the water pipe (6) and the bottom of the first cooling pipe (2). The sealing element is a cartridge mechanical seal, with its inner ring rotating with the water pipe (6) and its outer ring fixedly connected to the first cooling pipe (2).

6. The medical waste incineration exhaust gas treatment device according to claim 1, characterized in that, The motor (7) is a worm gear reducer motor.

7. A medical waste incineration exhaust gas treatment device according to claim 1, characterized in that, A spiral plate (8) is fixedly connected between the inner wall of the second cooling tube (4) and the outer wall of the first cooling tube (2), and the spiral plate (8) forms a spiral airflow channel inside the second cooling tube (4).

8. A medical waste incineration tail gas treatment device according to claim 7, characterized in that, The outer wall of the second cooling tube (4) is fixed with multiple heat dissipation fins (9) at equal intervals along the circumferential direction. The cross-section of the heat dissipation fins (9) is a wedge shape that gradually thins from the root to the top.

9. A medical waste incineration tail gas treatment device according to claim 8, characterized in that, A fan blade (10) is also fixedly installed on the output shaft of the motor (7), and a wind guide cover (11) is fixed above the fan blade (10) on the outside of the fan blade (10).

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