Municipal sludge drying device

Abstract

According to the municipal sludge drying device provided by the utility model, drying gas is introduced into the device body through the air supply assembly to be in direct contact with sludge and dry the sludge, and the sludge is overturned and crushed through the overturning assembly, so that the drying gas is in full contact with the sludge, and the sludge is dried; meanwhile, gas generated by the sludge sequentially passes through a dust removal assembly, a purification box and a sterilization assembly through an exhaust pipe, dust and particulate matter in the gas are removed through an atomization water distributor, the gas is subjected to moisture absorption and deodorization treatment through the adsorption effect of a mixture of activated carbon and a molecular sieve, and finally the gas is sterilized through an annular ultraviolet lamp; the device realizes dust removal, deodorization and sterilization treatment of gas, is green and environment-friendly, is beneficial to reducing pollution of emission of gas generated by sludge drying to urban living environment, and ensures body health of urban residents.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, in particular to a municipal sludge drying device. Background Art

[0002] Urban life, industry and commerce generate a large amount of sewage, which contains a large amount of suspended particles, organic matter and microorganisms. These substances are removed or converted into solid matter during the sewage treatment process to form sludge. Untreated sludge contains pollutants such as odor, infectious bacteria and heavy metals, which will threaten the urban living environment and human health. Therefore, the sludge generated in the city is usually dried through a drying device, which reduces the risk and harm of sludge to the environment and realizes the sustainable management and comprehensive utilization of sludge.

[0003] During the sludge drying process, the organic matter in the sludge will decompose and volatilize during the heating and drying process, generating a certain amount of gas, such as ammonia, hydrogen sulfide, etc. These gases not only carry fine particles generated during the drying process, but also cause urban odor pollution and air pollution if they are discharged without treatment, affecting the health of citizens and the safety of the environment. Therefore, it is necessary to provide a municipal sludge drying device that can effectively treat the gas generated during the drying process. Utility Model Content

[0004] Aiming at the technical problem that harmful gases generated in the sludge drying process in the prior art will cause secondary pollution if discharged directly and need to be effectively treated before discharge, the utility model provides a municipal sludge drying device.

[0005] A municipal sludge drying device comprises a device body, wherein a turning assembly for turning and mixing sludge is arranged inside the device body, and an air supply assembly is arranged below the turning assembly, and the air supply assembly is used to convey hot air to dry the sludge; a feed hopper and an exhaust pipe are arranged above the device body, and a dust removal assembly, a purification box and a sterilization assembly are connected to the exhaust pipe in sequence; the dust removal assembly comprises a cylinder, an air inlet connected to the exhaust pipe is arranged in the middle of the cylinder, and an air outlet connected to the purification box is arranged at the top of the cylinder; a baffle and an atomizing water distributor are arranged in sequence from top to bottom in the cylinder; a sewage discharge pipe with a first valve is arranged at the bottom of the cylinder; a plurality of air permeable plates are evenly arranged inside the purification box, and the interior of the air permeable plates is filled with a mixture of activated carbon and molecular sieves; the sterilization assembly comprises a shell, a disinfection chamber is arranged in the shell, and a plurality of annular ultraviolet lamps are embedded in the disinfection chamber; a discharge pipe with a second valve is arranged at the bottom of the device body.

[0006] Preferably, the flip assembly includes a rotating shaft and a first motor for driving the rotating shaft to rotate; a stirring rod is fixedly mounted on the rotating shaft.

[0007] Preferably, the air supply assembly includes an air supply pipe for conveying hot air, the air supply pipe can be rotatably mounted on the device body, and one end of the air supply pipe is connected to a second motor for driving the air supply pipe to rotate, a plurality of longitudinal blades are provided on the circumferential surface of the air supply pipe, and a plurality of air vents are provided on the air supply pipe between the longitudinal blades.

[0008] Preferably, an air duct is provided on the side of the device body away from the second motor, and one end of the air duct is connected to the air supply duct, and the other end is connected in sequence to a heating tube for heating gas and a blower.

[0009] Preferably, the purification box is connected to the disinfection chamber via a connecting pipe, the blower is connected to the heating pipe via a ventilation pipe, a return air duct is provided between the connecting pipe and the ventilation pipe, and a one-way valve is provided on the return air duct.

[0010] Preferably, a filter screen is provided at one end of the exhaust pipe located inside the device body.

[0011] Preferably, a drying layer is further provided above the baffle.

[0012] Preferably, the sewage pipe is connected to a water collecting tank, and a liquid level meter is provided in the water collecting tank.

[0013] Preferably, the cylinder is further provided with a water inlet, and the water inlet is communicated with the atomizing water distributor.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a municipal sludge drying device, which introduces drying gas into the device body through the air supply component to directly contact the sludge and dry the sludge, and turns and crushes the sludge through the turning component, so that the drying gas is in full contact with the sludge to achieve sludge drying; at the same time, the gas generated by the sludge passes through the dust removal component, the purification box and the sterilization component in sequence through the exhaust pipe, and the dust and particulate matter in the gas are removed by the atomizing water distributor, and the adsorption effect of the mixture of activated carbon and molecular sieve is used to absorb moisture and deodorize the gas, and finally the gas is sterilized by the annular ultraviolet lamp, thereby achieving dust removal, deodorization and sterilization of the gas, which is green and environmentally friendly, and is conducive to reducing the pollution of the urban living environment by gas emissions generated by sludge drying, and ensuring the health of urban residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a schematic diagram of the structure of a municipal sludge drying device.

[0016] Figure 2The utility model provides a schematic diagram of the structure of a dust removal component.

[0017] Figure 3 The utility model provides a schematic diagram of the purification box structure.

[0018] Figure 4 The present invention provides a schematic diagram of the structure of a sterilization component.

[0019] Figure ID

[0020] 1. Device body; 2. Drying chamber; 3. Turning assembly; 31. Rotating shaft; 32. First motor; 33. Stirring rod; 4. Air supply assembly; 41. Air supply pipe; 42. Second motor; 43. Longitudinal blades; 44. Air vent; 5. Feed hopper; 6. Exhaust pipe; 7. Filter; 8. Discharge pipe; 9. Air guide pipe; 10. Heating pipe; 11. Blower; 12. Dust removal assembly; 121. Cylinder; 122. Air intake Inlet; 123, air outlet; 124, baffle; 125, atomizing water distributor; 126, water inlet; 127, drain pipe; 128, drying layer; 13, purification box; 131, breathable plate; 132, mixture of activated carbon and molecular sieve; 14, sterilization component; 141, shell; 142, disinfection chamber; 143, annular ultraviolet lamp; 15, connecting pipe; 16, return air duct; 17, ventilation pipe; 18, one-way valve. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] refer to Figure 1As shown, the utility model provides a municipal sludge drying device, comprising a device body 1, wherein a drying chamber 2 is formed inside the device body 1, wherein a turning assembly 3 for turning and mixing sludge is provided inside the drying chamber 2, and an air supply assembly 4 is provided below the turning assembly 3, wherein the air supply assembly 4 is used to convey hot air to dry the sludge; a feed hopper 5 and an exhaust pipe 6 are provided above the device body 1, and a filter screen 7 is provided at one end of the exhaust pipe 6 located inside the device body 1. A discharge pipe 8 with a second valve is provided at the bottom of the device body 1. The sludge to be processed enters the drying chamber 2 through the feed hopper 5, and the drying gas is introduced into the drying chamber 2 through the air supply assembly 4 to directly contact the sludge, and the sludge is dried, and the turning assembly 3 turns and crushes the sludge, so that the drying gas is fully in contact with the sludge, and the dried sludge is discharged from the discharge pipe 8, and the gas generated by the sludge is discharged through the exhaust pipe 6.

[0023] Specifically, the turnover assembly 3 includes a rotating shaft 31 and a first motor 32 for driving the rotating shaft 31 to rotate; a stirring rod 33 is fixedly mounted on the rotating shaft 31. The first motor 32 drives the rotating shaft 31 to rotate, and then drives the stirring rod 33 to stir and flip the sludge, which can increase the contact area between the gas and the sludge in the drying chamber and improve the heat transfer efficiency, and can also make the contact between the sludge particles uniform, and avoid the formation of crusts or covering layers on the sludge surface, which is conducive to uniform distribution and rapid evaporation of water, which helps to prevent uneven drying or agglomeration of sludge and improve the drying effect.

[0024] The air supply assembly 4 includes an air supply pipe 41 for conveying hot air, the air supply pipe 41 is rotatably mounted on the device body 1, and one end of the air supply pipe 41 is connected to a second motor 42 for driving the air supply pipe 41 to rotate, and a plurality of longitudinal blades 43 are provided on the circumferential surface of the air supply pipe 41, and a plurality of vents 44 are provided on the air supply pipe 41 between the longitudinal blades 43. The hot air enters the drying chamber 2 through the vents 44 on the air supply pipe 41, and is contacted and dried with the sludge, and the air supply pipe 41 is driven to rotate by the second motor 42, thereby driving the longitudinal blades 43 to rotate, which can prevent the sludge from blocking the sludge that is about to adhere to the pipe wall of the air supply pipe 41 to a certain extent, and can also cause the sludge to be turned over or stirred.

[0025] The device body 1 is provided with an air duct 9 on the side away from the second motor 42, and one end of the air duct 9 is connected to the air supply pipe 41, and the other end is connected in sequence to a heating pipe 10 for heating gas and a blower 11. The airflow generated by the blower 11 is input into the heating pipe 10 through the pipeline, and the heating wire in the heating pipe 10 heats the gas to a certain temperature, and then enters the air supply pipe 41 through the air duct 9, and then enters the drying chamber 2 through the vent 44 of the air supply pipe 41.

[0026] The exhaust pipe 6 is connected in sequence with a dust removal component 12 for removing a large amount of dust and particulate matter that may be contained in the gas generated by sludge drying, a purification box 13 for removing odorous gases and volatile organic matter in the gas generated by sludge drying, and a sterilization component 14 for killing bacteria.

[0027] Among them, reference Figure 1 , Figure 2 As shown, the dust removal component 12 includes a cylinder 121, an air inlet 122 connected to the exhaust pipe 6 is provided in the middle of the cylinder 121, and an air outlet 123 connected to the purification box 13 is provided at the top of the cylinder 121; a baffle 124 and an atomizing water distributor 125 are provided in sequence from top to bottom in the cylinder 121, and a water inlet 126 is also provided at the top of the cylinder 121 to communicate with the atomizing water distributor 125, a sewage pipe 127 with a first valve is provided at the bottom of the cylinder 1, a drying layer 128 is also provided above the baffle 124, and the sewage pipe 127 is connected to a water collecting tank, and a liquid level meter is provided in the water collecting tank.

[0028] After the gas generated by sludge drying in the drying chamber 2 enters the cylinder 121 through the exhaust pipe 6, the atomizing water distributor 125 works, and the gas generated by sludge drying is dusted and condensed under the action of the water film. The dust-free gas passes through the baffle 124 to effectively intercept the water molecules in the gas, and then passes through the drying layer 128 for drying before entering the purification box 13. After the water sprayed from the atomizing water distributor 125 contacts the gas generated by sludge drying, it takes away the dust and particulate matter in the sludge tail gas, and the formed sewage is discharged from the cylinder 121 through the sewage pipe 127 to the water collecting tank. The liquid level gauge in the water collecting tank is used to detect the water level in the water collecting tank, so as to facilitate the regular treatment of the sewage in the water collecting tank.

[0029] refer to Figure 1 , Figure 3 As shown, a plurality of air permeable plates 131 are evenly arranged inside the purification box 13, and the interior of the air permeable plates 131 is filled with a mixture of activated carbon and molecular sieves 132. Both activated carbon and molecular sieves have a large specific surface area and pore structure, and can adsorb and remove moisture in the gas, and can also adsorb and remove organic gases generated by sludge, such as methane, hydrogen sulfide, etc. These organic substances are often the source of odor, and can significantly improve the odor after adsorption. Activated carbon and molecular sieves can also effectively remove volatile organic matter in sludge, and further purify the gas generated by sludge drying.

[0030] After the municipal sludge is dried, a certain amount of gas will be generated. These gases may contain some harmful substances, such as bacteria, viruses, microorganisms, etc. Therefore, it is necessary to use the sterilization component 14 to sterilize the gas generated after the sludge is dried. Figure 1 , Figure 4 As shown, the sterilization component 14 includes a shell 141, a sterilization chamber 142 is provided in the shell, and a plurality of annular ultraviolet lamps 143 are embedded in the sterilization chamber 142. After the gas treated by the purification box enters the sterilization chamber 142, the annular ultraviolet lamps 143 sterilize the gas in all directions, killing bacteria, viruses and other pathogens that may exist in the sludge gas, thereby reducing potential harm to the environment and human body during discharge.

[0031] Preferably, the purification box 12 is connected to the disinfection chamber 141 through a connecting pipe 15, the blower is connected to the heating tube 10 through a ventilation pipe 17, and a return air duct 16 is provided between the connecting pipe 15 and the ventilation pipe 17. The return gas enters the heating tube 10 through the ventilation pipe 17 through the return air duct 16, and the heat energy contained in the gas can be recovered, and heat exchange is achieved with the gas in the heating tube 10, so that the temperature distribution in the heating tube 10 is more uniform, and the working stability and heating effect of the entire heating tube 10 are improved.

[0032] Although a specific implementation method is listed in the present invention, the present invention is not limited to the contents mentioned in the specification. Those skilled in the art can completely change and modify the various components, assemblies or devices in the sludge drying device of the present invention and the axial air supply type sludge drying method through the above-mentioned design concept of the present invention, and these changes or modifications are within the scope of the concept of the present invention.

Claims

1. A municipal sludge drying device, characterized in that: The device comprises a device body, wherein a turning assembly for turning over and mixing sludge is arranged inside the device body, and an air supply assembly is arranged below the turning assembly, and the air supply assembly is used to convey hot air to dry the sludge; A feed hopper and an exhaust pipe are arranged above the device body, and a dust removal component, a purification box and a sterilization component are connected to the exhaust pipe in sequence; the dust removal component includes a cylinder, an air inlet connected to the exhaust pipe is arranged in the middle of the cylinder, and an air outlet connected to the purification box is arranged on the top of the cylinder; a baffle and an atomizing water distributor are arranged in sequence from top to bottom in the cylinder; a sewage pipe with a first valve is arranged at the bottom of the cylinder; a plurality of air permeable plates are evenly arranged inside the purification box, and the interior of the air permeable plates is filled with a mixture of activated carbon and molecular sieves; the sterilization component includes a shell, a disinfection chamber is arranged in the shell, and a plurality of annular ultraviolet lamps are embedded in the disinfection chamber; a discharge pipe with a second valve is arranged at the bottom of the device body.

2. The municipal sludge drying device according to claim 1, characterized in that: The flip assembly includes a rotating shaft and a first motor for driving the rotating shaft to rotate; a stirring rod is fixedly mounted on the rotating shaft.

3. The municipal sludge drying device according to claim 1, characterized in that: The air supply assembly includes an air supply pipe for conveying hot air, the air supply pipe can be rotatably installed on the device body, and one end of the air supply pipe is connected to a second motor for driving the air supply pipe to rotate, a plurality of longitudinal blades are provided on the circumferential surface of the air supply pipe, and a plurality of ventilation holes are provided on the air supply pipe between the longitudinal blades.

4. The municipal sludge drying device according to claim 3, characterized in that: An air duct is provided on the side of the device body away from the second motor, and one end of the air duct is connected to the air supply pipe, and the other end is connected in sequence to a heating pipe for heating gas and a blower.

5. The municipal sludge drying device according to claim 4, characterized in that: The purification box is connected to the disinfection chamber through a connecting pipe, the blower is connected to the heating pipe through a ventilation pipe, a return air duct is arranged between the connecting pipe and the ventilation pipe, and a one-way valve is arranged on the return air duct.

6. The municipal sludge drying device according to claim 1, characterized in that: A filter is provided at one end of the exhaust pipe located in the device body.

7. The municipal sludge drying device according to claim 1, characterized in that: A drying layer is also arranged above the baffle.

8. The municipal sludge drying device according to claim 1, characterized in that: The sewage pipe is connected to a water collecting tank, and a liquid level meter is arranged in the water collecting tank.

9. The municipal sludge drying device according to claim 1, characterized in that: The cylinder is also provided with a water inlet, which is communicated with the atomizing water distributor.

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