Tail gas treatment equipment

Abstract

The utility model relates to tail gas treatment equipment and belongs to the field of tail gas treatment. The equipment comprises a shell, a connecting pipe, a filtering mechanism and a cooling mechanism. The shell is provided with a first cavity and a second cavity which are arranged in the first direction, and the shell is provided with an air inlet allowing air to enter the first cavity and an air outlet allowing the air to leave the second cavity. The connecting pipe is provided with a first end communicated with the first cavity and a second end communicated with the second cavity. The filtering mechanism is arranged in the first cavity and used for filtering dust in the gas. The cooling mechanism is arranged in the second cavity and is used for reducing the temperature and humidity of the gas; in the gravity direction, the filtering mechanism is located between the air inlet and the first end, the first end is located above the air inlet, at least part of the cooling mechanism is located between the second end and the air outlet, the air outlet is located above the second end, and the first end is located above the second end. The gravity direction is perpendicular to the first direction.

Description

Technical Field

[0001] The utility model belongs to the field of tail gas treatment, and particularly relates to a tail gas treatment device. Background Art

[0002] The principle of the friction heat technology is that the object to be treated is crushed by friction, so that the temperature rises to a certain high temperature exceeding the boiling point of water. Then water is sprayed on the object to be treated, and saturated water vapor is used to promote the autolysis and disintegration of bacteria to achieve the sterilization effect. Under the state of high-temperature steam, the bacteria are disintegrated to achieve complete sterilization and disinfection; it has little impact on the environment; it does not produce dioxin and does not cause secondary pollution; it can achieve zero wastewater and zero waste gas emissions, and the output is completely sterilized, disinfected and completely harmless; it can reduce the volume of the object to be treated by 70% and reduce the weight by 30%.

[0003] The applicant found through retrieval that a medical waste disinfection device based on the friction heat technology disclosed in the invention patent with the patent publication number CN114713590B includes a first bracket. A motor bracket is fixedly connected between the inner sides of the lower ends of the first bracket, a motor is installed at the top of the motor bracket, the output end of the motor is fixedly connected with a tool rest, and a plurality of blades are installed outside the tool rest. By driving the locking mechanism to operate through the first oil cylinder, the automatic closing and locking of the upper cylinder assembly and the cover assembly can be realized. By setting the lower furnace wall lining plate, the furnace bottom lining plate and the furnace bottom circular lining plate, a wear-resistant layer can be formed in the cylinder.

[0004] However, in the prior art represented by the above patent, the water washer and the dryer are two different systems. They are arranged along the gravity direction and are connected by a hose. The two devices occupy too much space, increasing the requirements for the installation site of the equipment. Content of the Utility Model

[0005] In view of the above problems, the embodiment of the present application provides a tail gas treatment device, which can reduce the requirements for the installation site of the device.

[0006] The embodiment of the present application provides a tail gas treatment device for treating the tail gas generated by a medical waste treatment device. The tail gas treatment device includes a housing, a connecting pipe, a filtering mechanism and a cooling mechanism. The housing has a first cavity and a second cavity arranged along a first direction. The housing has an air inlet for gas to enter the first cavity and an air outlet for gas to leave the second cavity. The connecting pipe has a first end communicated with the first cavity and a second end communicated with the second cavity. The filtering mechanism is arranged in the first cavity and is used for filtering dust in the gas. The cooling mechanism is arranged in the second cavity and is used for reducing the temperature and humidity of the gas; along the gravity direction, the filtering mechanism is located between the air inlet and the first end, and the first end is located above the air inlet. At least part of the cooling mechanism is located between the second end and the air outlet, and the air outlet is located above the second end, and the first end is located above the second end. The gravity direction is perpendicular to the first direction.

[0007] Specifically, after the gas generated by the medical waste treatment equipment enters the first cavity through the air inlet, it passes through the filtering mechanism to filter out dust. Since the gas enters the first cavity, the pressure in the first cavity is positive relative to the second cavity. As a result, the gas in the first cavity can overcome the buoyancy of the air and move from the first end of the connecting pipe to the second end to enter the second cavity. Subsequently, the gas passes through the cooling mechanism to be cooled, and the water vapor in the gas is liquefied to reduce the humidity of the gas, facilitating subsequent gas treatment.

[0008] In the above technical solution, since the first cavity and the second cavity are arranged in the first direction, at least part of the installation space occupied by the filtering mechanism and the cooling mechanism overlaps in the first direction, reducing the size requirement of the installation site for the equipment in the direction of gravity. At the same time, the filtering mechanism and the cooling mechanism are located in the same housing, facilitating the installation of the tail gas treatment system with this equipment.

[0009] In some embodiments, the filtering mechanism includes Pall rings and spray nozzles. The Pall rings are arranged in the first cavity. Along the direction of gravity, the Pall rings are located between the air inlet and the first end. The spray nozzles are arranged in the first cavity, connected to a water source, and used to supply washing liquid to the Pall rings.

[0010] In the above technical solution, the washing liquid is evenly distributed onto the Pall rings through the spray nozzles. When the gas passes through the Pall rings, the particulate matter in the gas is captured, and the soluble pollutants in the gas are absorbed by the washing liquid, reducing the dust content in the gas.

[0011] In some embodiments, the spray nozzles are located above the Pall rings.

[0012] In the above technical solution, the spray nozzles are located above the Pall rings. On the one hand, it enables the washing liquid to move towards the Pall rings by its own gravity after leaving the spray nozzles, reducing the pressure requirement on the spray nozzles. On the other hand, the debris detached from the Pall rings will move away from the spray nozzles along the direction of gravity, reducing the risk of the debris detached from the Pall rings blocking the spray nozzles.

[0013] In some embodiments, the tail gas treatment equipment further includes a circulation pump. The circulation pump has a water inlet end and a water outlet end. The water inlet end is located in the first cavity and below the air inlet, and the water outlet end is connected to the spray nozzles. The circulation pump is used to drive the washing liquid in the first cavity to move from the water inlet end to the water outlet end.

[0014] In the above technical solution, the circulation pump has an inlet end and an outlet end. The inlet end is located inside the first chamber and below the air inlet. The outlet end is communicated with the nozzle. The circulation pump is used to drive the cleaning liquid in the first chamber to move from the inlet end to the outlet end, so that the cleaning liquid in the first chamber can be recycled, thereby improving the utilization rate of the cleaning liquid.

[0015] In some embodiments, the tail gas treatment device further includes a liquid level gauge and a first drain valve. The liquid level gauge is arranged inside the first chamber. Along the direction of gravity, the liquid level gauge is located between the air inlet and the inlet end. The liquid level gauge is used to measure the height of the cleaning liquid in the first chamber. The housing has a first wall in the direction of gravity. The first wall is located below the air inlet. The first drain valve is arranged on the first wall and communicated with the first chamber.

[0016] In the above technical solution, along the direction of gravity, the liquid level gauge is located between the air inlet and the inlet end. The liquid level gauge is used to measure the height of the cleaning liquid in the first chamber. The housing has a first wall in the direction of gravity. The first wall is located below the air inlet. The first drain valve is arranged on the first wall and communicated with the first chamber. During the process of filtering the gas, the liquid level of the cleaning liquid in the first chamber can be measured by the liquid level gauge. When the liquid level is close to the air inlet, the cleaning liquid in the first chamber can be discharged through the first drain valve to prevent the cleaning liquid from entering the medical waste treatment device through the air inlet.

[0017] In some embodiments, the cooling mechanism includes a liquid inlet pipe and a cooling pipe. The liquid inlet pipe is communicated with the cooling medium source and extends along the direction of gravity. The cooling pipe is communicated with the liquid inlet pipe and is spirally wound around the periphery of the liquid inlet pipe.

[0018] In the above technical solution, the cooling pipe is communicated with the liquid inlet pipe and is spirally wound around the periphery of the liquid inlet pipe. Therefore, compared with the scheme where the cooling pipe extends along the direction of gravity, the length of the cooling pipe located in the second chamber is increased, and thus the heat exchange area between the cooling pipe and the gas is increased, improving the cooling efficiency of the cooling pipe for the gas.

[0019] In some embodiments, along the direction of gravity, the cooling pipe is located between the second end and the air outlet.

[0020] In the above technical solution, along the direction of gravity, the cooling pipe is located between the second end and the air outlet. Therefore, when the gas moves from the second end to the air outlet, it can fully exchange heat with the cooling pipe, improving the cooling efficiency of the cooling pipe for the gas.

[0021] In some embodiments, on the projection plane perpendicular to the direction of gravity, the positive projection of the second end is located inside the positive projection of the cooling pipe, and the positive projection of the air outlet is located outside the positive projection of the cooling pipe.

[0022] In the above technical solution, the orthographic projection of the second end is located inside the orthographic projection of the cooling pipe, and the orthographic projection of the air outlet is located outside the orthographic projection of the cooling pipe. As a result, the gas entering the second cavity from the second end is located within the cooling space formed by the surrounding of the cooling pipe. Before the gas leaves the second cavity through the air outlet, it needs to pass through the gap between the adjacent cooling pipes along the gravity direction, so that it can fully exchange heat with the cooling pipe, improving the cooling efficiency of the cooling pipe for the gas.

[0023] In some embodiments, the tail gas treatment device further includes a temperature sensor. The temperature sensor is disposed in the first cavity and is used to detect the temperature in the first cavity.

[0024] In the above technical solution, the temperature sensor is disposed in the first cavity and is used to detect the temperature in the first cavity, so that the temperature of the gas can be known through the temperature sensor, and then the supply speed of the cooling medium can be adjusted to reduce the waste of the cooling medium.

[0025] In some embodiments, the tail gas treatment device further includes a filter screen. The filter screen is disposed at the first end and is used to filter dust in the gas.

[0026] In the above technical solution, by disposing the filter screen at the first end, the gas entering the second cavity from the first cavity through the connecting pipe can be filtered by the filter screen, so as to reduce the dust content in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a cross-sectional view of the tail gas treatment device provided by the embodiment of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the tail gas treatment device provided by the embodiment of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the tail gas treatment device provided by the embodiment of the present invention in another direction;

[0031] Figure 4 For Figure 1 The partial enlarged view at A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will describe the embodiments of the present application in detail with reference to the drawings.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0034] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] The principle of the friction heat technology is that the object to be processed is frictionally pulverized, and when the heat rises to a certain high temperature exceeding the boiling point of water, water is sprayed onto the object to be processed, and saturated water vapor is used to promote the autolysis and disintegration of bacteria to achieve the sterilization effect. Under the high-temperature steam state, the bacteria are disintegrated to achieve complete sterilization and disinfection; it has little impact on the environment; it does not produce dioxins and does not cause secondary pollution; it can achieve zero wastewater and zero waste gas emissions, and the output is completely sterilized and disinfected and completely harmless; it can reduce the volume of the object to be processed by 70% and reduce the weight by 30%.

[0037] The applicant found through retrieval that a medical waste disinfection device based on the friction heat technology is disclosed in the invention patent with the patent publication number CN114713590B, which includes a first bracket. A motor bracket is fixedly connected between the inner sides of the lower ends of the first bracket, a motor is installed at the top of the motor bracket, a tool holder is fixedly connected to the output end of the motor, and a plurality of blades are installed outside the tool holder. By driving the locking mechanism to operate through a first oil cylinder, automatic closing and automatic locking of the upper cylinder assembly and the cover assembly can be achieved. By providing the lower furnace wall lining plate, the furnace bottom lining plate, and the furnace bottom circular lining plate, a wear-resistant layer can be formed inside the cylinder.

[0038] However, in the prior art represented by the above-mentioned patent, the water washer and the dryer are two different systems. They are arranged along the gravity direction and connected by a hose. The two devices occupy too much space, increasing the requirements for the installation site of the equipment.

[0039] To solve the above technical problems, referring to Figure 1 , an exhaust gas treatment device 100 is provided in an embodiment of the present application for treating the exhaust gas generated by a medical waste treatment device. The exhaust gas treatment device 100 includes a housing 10, a connecting pipe 20, a filtering mechanism 30, and a cooling mechanism 40. The housing 10 has a first cavity 11 and a second cavity 12 arranged along a first direction X. The housing 10 has an air inlet 13 for allowing gas to enter the first cavity 11 and an air outlet 14 for allowing gas to leave the second cavity 12. The connecting pipe 20 has a first end 21 communicating with the first cavity 11 and a second end 22 communicating with the second cavity 12. The filtering mechanism 30 is disposed in the first cavity 11 and is used for filtering dust in the gas. The cooling mechanism 40 is disposed in the second cavity 12 and is used for reducing the temperature and humidity of the gas; along the gravity direction Y, the filtering mechanism 30 is located between the air inlet 13 and the first end 21, and the first end 21 is located above the air inlet 13. At least a part of the cooling mechanism 40 is located between the second end 22 and the air outlet 14, and the air outlet 14 is located above the second end 22, and the first end 21 is located above the second end 22. The gravity direction Y is perpendicular to the first direction X.

[0040] The housing 10 is a component for accommodating the filtering mechanism 30 and the cooling mechanism 40.

[0041] The first cavity 11 is a cavity for accommodating the filtering mechanism 30 to filter the gas, and the second cavity 12 is a cavity for accommodating the cooling mechanism 40 to perform drying treatment on the gas.

[0042] The first direction X is a horizontal direction perpendicular to the gravity direction Y.

[0043] In some embodiments, referring to Figure 1 , the housing 10 includes an outer shell 10A and a partition 10B. The partition 10B is disposed in the outer shell 10A to divide the outer shell 10A into a first cavity 11 and a second cavity 12 distributed along the first direction X.

[0044] The connecting pipe 20 is a pipe body for guiding the gas at the top of the first cavity 11 to the bottom of the second cavity 12.

[0045] The filtering mechanism 30 can be a filter screen or other components or mechanisms with a filtering effect; the cooling mechanism 40 is a mechanism or component for absorbing heat in the gas.

[0046] Specifically, the gas generated by the medical waste treatment equipment enters the first cavity 11 through the air inlet 13, and then passes through the filtering mechanism 30 to filter out dust. Since the gas enters the first cavity 11, the pressure in the first cavity 11 is positive relative to the second cavity 12. As a result, the gas in the first cavity 11 can overcome the buoyancy of the air and move from the first end 21 to the second end 22 of the connecting pipe 20 to enter the second cavity 12. Subsequently, the gas passes through the cooling mechanism 40 to be cooled, and the water vapor in the gas is liquefied to reduce the humidity of the gas, facilitating subsequent gas treatment.

[0047] In this technical solution, since the first cavity 11 and the second cavity 12 are arranged along the first direction X, at least part of the installation space occupied by the filtering mechanism 30 and the cooling mechanism 40 overlaps in the first direction X. As a result, the requirement for the size of the installation site of the device in the gravity direction Y is reduced. At the same time, the filtering mechanism 30 and the cooling mechanism 40 are located in the same housing 10, facilitating the installation of the tail gas treatment system with this device.

[0048] According to some embodiments of the present application, referring to Figure 1 , the filtering mechanism 30 includes Pall rings 31 and spray heads 32. The Pall rings 31 are arranged in the first cavity 11. Along the gravity direction Y, the Pall rings 31 are located between the air inlet 13 and the first end 21. The spray heads 32 are arranged in the first cavity 11. The spray heads 32 are connected to a water source and are used to supply washing liquid to the Pall rings 31.

[0049] The Pall ring 31 is a high-efficiency packing used in tower equipment in industries such as chemical engineering, petroleum, and pharmaceuticals, especially in absorption towers, distillation towers, and reaction towers. It was invented by the chemical engineer Hermann Pall of BASF (BASF) in Germany in the 1970s.

[0050] The Pall ring 31 is characterized by an open-ring structure, which can increase the surface area of the packing, improve the gas-liquid contact efficiency, and thus enhance the mass transfer and heat transfer effects. The Pall ring 31 is usually made of plastics (such as polypropylene, polyvinyl chloride, etc.) or metals (such as stainless steel), and its size can be selected according to the specifications and process requirements of the tower equipment.

[0051] The spray head 32 is a component for supplying washing liquid to the Pall rings 31. It can be understood that the washing liquid can be water, alkaline solution, acidic solution, absorbent solution, and oxidant solution.

[0052] Among them, the alkaline solution can be sodium hydroxide (NaOH), calcium hydroxide (Ca(OH) 2 ), or sodium carbonate (Na 2 CO 3) etc. These alkaline solutions are often used to neutralize acidic gases in exhaust gases, such as sulfur dioxide (SO 2 ), hydrogen chloride (HCl), and hydrogen fluoride (HF), etc.; the acidic solution can be sulfuric acid (H 2 SO 4 ) or hydrochloric acid (HCl), etc. These acidic solutions can be used to remove alkaline pollutants in exhaust gases, such as ammonia (NH 3 ); the absorbent solution can be limestone slurry (CaCO 3 ), ammonia water (NH 3 ·H 2 O) or organic amine solution, etc. These solutions are specifically used to absorb specific exhaust gas components. For example, limestone slurry or ammonia water is used to absorb SO 2 during the flue gas desulfurization process; the oxidant solution can be hydrogen peroxide (H 2 O 2 ) or sodium hypochlorite (NaClO), etc. These solutions can be used to oxidize organic pollutants or sulfides in exhaust gases, etc.

[0053] In this technical solution, the washing liquid is evenly distributed onto the Pall rings 31 through the spray head 32, so that when the gas passes through the Pall rings 31, the particulate matter in the gas is captured, and the soluble pollutants in the gas are absorbed by the washing liquid to reduce the dust content in the gas.

[0054] According to some embodiments of the present application, referring to Figure 1 , the spray head 32 is located above the Pall rings 31.

[0055] In this technical solution, the spray head 32 is located above the Pall rings 31. On the one hand, it enables the washing liquid to move towards the Pall rings 31 by its own gravity after leaving the spray head 32, thereby reducing the required pressure on the spray head 32; on the other hand, the debris separated from the Pall rings 31 will move away from the spray head 32 along the gravity direction Y, thereby reducing the risk of the debris separated from the Pall rings 31 clogging the spray head 32.

[0056] According to some embodiments of the present application, referring to Figure 1 , the tail gas treatment device 100 further includes a circulation pump. The circulation pump has a water inlet end 51 and a water outlet end. The water inlet end 51 is located in the first cavity 11 and below the air inlet 13, and the water outlet end is communicated with the spray head 32. The circulation pump is used to drive the washing liquid in the first cavity 11 to move from the water inlet end 51 to the water outlet end.

[0057] The circulation pump can be a general water pump with a water pumping function.

[0058] In this technical solution, the circulation pump has a water inlet end 51 and a water outlet end. The water inlet end 51 is located in the first cavity 11 and below the air inlet 13. The water outlet end is communicated with the nozzle 32. The circulation pump is used to drive the washing liquid in the first cavity 11 to move from the water inlet end 51 to the water outlet end, so that the washing liquid in the first cavity 11 can be recycled, thereby improving the utilization rate of the washing liquid.

[0059] According to some embodiments of the present application, referring to Figure 2 , the tail gas treatment device 100 further includes a liquid level gauge 70 and a first drain valve 60. The liquid level gauge 70 is arranged in the first cavity 11. Along the gravity direction Y, the liquid level gauge 70 is located between the air inlet 13 and the water inlet end 51. The liquid level gauge 70 is used to measure the height of the washing liquid in the first cavity 11. The housing 10 has a first wall 101 in the gravity direction Y. The first wall 101 is located below the air inlet 13. The first drain valve 60 is arranged on the first wall 101 and communicated with the first cavity 11.

[0060] The liquid level gauge 70 can be a liquid level sensor. Exemplarily, the liquid level gauge 70 can be one or more of a float type liquid level sensor, a capacitance type liquid level sensor, and an ultrasonic liquid level sensor.

[0061] In some embodiments, there can be multiple liquid level gauges 70 arranged at intervals along the gravity direction Y. Exemplarily, there can be one, two, three, or four.

[0062] The first drain valve 60 can be a manual valve that can be manually opened, or an electric valve that can be opened by a controller. In some embodiments, the device further has a controller. The controller is used to receive the liquid level height of the washing liquid detected by the liquid level gauge 70 and control the first drain valve 60 to open when the liquid level is close to the air inlet 13 to reduce the liquid level height of the washing liquid.

[0063] In some embodiments, the water inlet end 51 is also arranged on the first wall 101.

[0064] In this technical solution, along the gravity direction Y, the liquid level gauge 70 is located between the air inlet 13 and the water inlet end 51. The liquid level gauge 70 is used to measure the height of the washing liquid in the first cavity 11. The housing 10 has a first wall 101 in the gravity direction Y. The first wall 101 is located below the air inlet 13. The first drain valve 60 is arranged on the first wall 101 and communicated with the first cavity 11. During the process of filtering the gas, the liquid level of the washing liquid in the first cavity 11 can be measured by the liquid level gauge 70. When the liquid level is close to the air inlet 13, the washing liquid in the first cavity 11 can be discharged through the first drain valve 60 to reduce the washing liquid from entering the medical waste treatment device through the air inlet 13.

[0065] According to some embodiments of the present application, referring to Figure 1, the cooling mechanism 40 includes a liquid inlet pipe 41 and a cooling pipe 42. The liquid inlet pipe 41 communicates with a cooling medium source and extends along the gravity direction Y. The cooling pipe 42 communicates with the liquid inlet pipe 41 and is spirally wound around the periphery of the liquid inlet pipe 41.

[0066] The liquid inlet pipe 41 is a water pipe communicating with a cooling medium source. Exemplarily, the cooling medium source provides a cooling medium to the cooling pipe 42 through the liquid inlet pipe 41. In some embodiments, the liquid inlet pipe 41 can also exchange heat with a gas.

[0067] It can be understood that the cooling medium can be water or oil with a lower temperature, liquid freon with a high pressure and low temperature, etc.

[0068] The cooling pipe 42 is a pipe body for exchanging heat with a gas. The cooling medium can return to the cooling medium source after passing through the cooling pipe 42 and be cooled down for reuse.

[0069] In this technical solution, the cooling pipe 42 communicates with the liquid inlet pipe 41 and is spirally wound around the periphery of the liquid inlet pipe 41. Thus, compared with the scheme where the cooling pipe 42 extends along the gravity direction Y, the length of the cooling pipe 42 located in the second cavity 12 is increased, and further the heat exchange area between the cooling pipe 42 and the gas is increased, improving the cooling efficiency of the cooling pipe 42 for the gas.

[0070] According to some embodiments of the present application, referring to Figure 1 , along the gravity direction Y, the cooling pipe 42 is located between the second end 22 and the air outlet 14.

[0071] In this technical solution, along the gravity direction Y, the cooling pipe 42 is located between the second end 22 and the air outlet 14. Thus, when the gas moves from the second end 22 to the air outlet 14, it can fully exchange heat with the cooling pipe 42, improving the cooling efficiency of the cooling pipe 42 for the gas.

[0072] According to some embodiments of the present application, referring to Figure 1 , on the projection plane perpendicular to the gravity direction Y, the orthographic projection of the second end 22 is located inside the orthographic projection of the cooling pipe 42, and the orthographic projection of the air outlet 14 is located outside the orthographic projection of the cooling pipe 42.

[0073] In this technical solution, the orthographic projection of the second end 22 is located inside the orthographic projection of the cooling pipe 42, and the orthographic projection of the air outlet 14 is located outside the orthographic projection of the cooling pipe 42. Thus, the gas entering the second cavity 12 from the second end 22 is located in the cooling space formed by the surrounding of the cooling pipe 42, and the gas needs to pass through the gap between the adjacent cooling pipes 42 along the gravity direction Y before leaving the second cavity 12 through the air outlet 14, so that it can fully exchange heat with the cooling pipe 42, improving the cooling efficiency of the cooling pipe 42 for the gas.

[0074] According to some embodiments of the present application, with reference to Figure 3 , the exhaust gas treatment device 100 further includes a temperature sensor 80. The temperature sensor 80 is disposed in the first cavity 11 and is configured to detect the temperature in the first cavity 11.

[0075] The temperature sensor 80 is a device for measuring temperature, which can convert the temperature into an available electrical signal for recording, displaying or controlling. Exemplarily, the temperature sensor 80 can be one or several of a thermocouple, a resistance temperature detector, and a thermistor.

[0076] In an embodiment where the exhaust gas treatment device 100 includes a controller, the controller is configured to receive the temperature in the first cavity 11 detected by the temperature sensor 80 and adjust the supply rate of the cooling medium to reduce waste of the cooling medium.

[0077] It can be understood that along the gravity direction Y, the temperature sensor 80 is located between the water inlet end 51 and the air inlet 13.

[0078] In this technical solution, the temperature sensor 80 is disposed in the first cavity 11 and is configured to detect the temperature in the first cavity 11, so that the temperature of the gas can be understood through the temperature sensor 80, and then the supply rate of the cooling medium can be adjusted to reduce waste of the cooling medium.

[0079] According to some embodiments of the present application, with reference to Figure 4 , the exhaust gas treatment device 100 further includes a filter screen 90. The filter screen 90 is disposed at the first end 21 and is configured to filter dust in the gas.

[0080] In this technical solution, by disposing the filter screen 90 at the first end 21, the gas entering the second cavity 12 from the first cavity 11 through the connecting pipe 20 can be filtered by the filter screen 90 to reduce the dust content in the gas.

[0081] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0082] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tail gas treatment device for treating tail gas generated by medical waste treatment equipment, characterized in that: include: A housing having a first cavity and a second cavity arranged along a first direction, the housing having an air inlet for gas to enter the first cavity and an air outlet for gas to leave the second cavity; a connecting pipe having a first end communicating with the first cavity and a second end communicating with the second cavity; A filtering mechanism, disposed in the first cavity and used to filter dust in the gas; A cooling mechanism, disposed in the second cavity and used to reduce the temperature and humidity of the gas; Along the direction of gravity, the filtering mechanism is located between the air inlet and the first end, and the first end is located above the air inlet, at least part of the cooling mechanism is located between the second end and the air outlet, and the air outlet is located above the second end, the first end is located above the second end, and the direction of gravity is perpendicular to the first direction.

2. The tail gas treatment equipment according to claim 1, characterized in that: The filtering mechanism comprises: A ball ring is disposed in the first cavity, and along the gravity direction, the ball ring is located between the air inlet and the first end; A nozzle is arranged in the first cavity, the nozzle is connected to a water source, and is used to provide a cleaning liquid to the ball ring.

3. The tail gas treatment equipment according to claim 2, characterized in that: The nozzle is located above the ball ring.

4. The tail gas treatment equipment according to claim 2, characterized in that: The tail gas treatment equipment also includes: A circulation pump having a water inlet and a water outlet, wherein the water inlet is located in the first cavity and below the air inlet, and the water outlet is connected to the nozzle. The circulation pump is used to drive the washing liquid in the first cavity to move from the water inlet to the water outlet.

5. The tail gas treatment equipment according to claim 4, characterized in that: The tail gas treatment equipment also includes: A liquid level meter is disposed in the first cavity, and is located between the air inlet and the water inlet along the gravity direction, and is used to measure the height of the washing liquid in the first cavity; The first drain valve, the shell has a first wall in the gravity direction, the first wall is located below the air inlet, and the first drain valve is arranged on the first wall and communicated with the first cavity.

6. The tail gas treatment equipment according to claim 1, characterized in that: The cooling mechanism comprises: A liquid inlet pipe, connected to a cooling medium source and extending along the gravity direction; The cooling pipe is communicated with the liquid inlet pipe and is spirally wound around the liquid inlet pipe.

7. The tail gas treatment equipment according to claim 6, characterized in that: Along the gravity direction, the cooling pipe is located between the second end and the air outlet.

8. The tail gas treatment equipment according to claim 7, characterized in that: On a projection plane perpendicular to the gravity direction, the orthographic projection of the second end is located inside the orthographic projection of the cooling pipe, and the orthographic projection of the air outlet is located outside the orthographic projection of the cooling pipe.

9. The tail gas treatment equipment according to claim 1, characterized in that: The tail gas treatment equipment also includes: The temperature sensor is disposed in the first cavity and is used to detect the temperature in the first cavity.

10. The tail gas treatment equipment according to any one of claims 1 to 9, characterized in that: The tail gas treatment equipment also includes: The filter screen is arranged at the first end and is used for filtering dust in the gas.

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