Sludge aerobic fermentation device capable of deeply dehydrating and increasing calorific value

Abstract

The utility model relates to the technical field of sludge fermentation processing, and particularly discloses a sludge aerobic fermentation device capable of deeply dewatering and increasing heat value, which comprises a fermentation tank, a feeding hopper is fixedly mounted on the ground on one side of the fermentation tank, and a driving motor is fixedly mounted on the outer surface of one side of the feeding hopper. A water containing disc is fixedly installed on the outer surface of one side of the feeding hopper, and a separation barrel is fixedly installed on the outer surface of the side, away from the driving motor, of the feeding hopper. According to the sludge aerobic fermentation device capable of deeply dewatering and increasing the calorific value, sludge can be stored through the feeding hopper, a large amount of sludge can be rotated and conveyed through the spiral conveying extrusion blade driven by the rotation of the driving motor, and the sludge can be continuously fed into the separation barrel to be extruded and separated; the sludge can be extruded and compressed to remove a large amount of water in the sludge, so that the reduction of the fermentation quality caused by overhigh water content during the subsequent fermentation of the sludge is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sludge fermentation processing technical field, concretely is a kind of sludge aerobic fermentation device of deep dewatering to improve heat value. BACKGROUND

[0002] With the acceleration of urbanization and the development of industrialization, the amount of sludge generated by life and production is increasing, and the sludge contains a large amount of organic matter, pathogens, heavy metals and other harmful substances. If it is not properly treated and directly discharged or landfilled, it will cause serious pollution to the environment and threaten human health. Traditional sludge treatment methods such as landfill and incineration have many problems. Landfill requires a large amount of land resources and may cause soil and groundwater pollution. Incineration can reduce the volume of sludge, but it will produce harmful gases that will pollute the atmosphere.

[0003] Sludge aerobic fermentation is a relatively environmentally friendly and effective sludge treatment method. This method can utilize the action of aerobic microorganisms to decompose and transform organic matter in sludge into stable humus. At the same time, the heat released during fermentation can also treat pathogens and organic matter in sludge, thereby achieving the purposes of harmless, stabilization and resource utilization. However, the traditional sludge aerobic fermentation device has certain limitations in terms of dewatering effect and heat value improvement. The high water content of sludge before fermentation can affect oxygen transfer and microbial activity during fermentation, resulting in long fermentation period and low efficiency. In addition, the heat value of sludge without deep dewatering is low. SUMMARY

[0004] The utility model aims at providing a kind of sludge aerobic fermentation device of deep dewatering to improve heat value to solve the problem of high water content of sludge in the above background technology, which is not easy to promote temperature for fermentation.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of sludge aerobic fermentation device of deep dewatering to improve heat value, including fermentation tank, the ground of one side of fermentation tank is fixedly installed with feeding hopper, and the inside of feeding hopper is inclined design, the outer surface of one side of feeding hopper is fixedly installed with driving motor, and the output end of driving motor penetrates the outer surface of feeding hopper, the outer surface of one side of feeding hopper is fixedly installed with water pan, and water pan is between fermentation tank and feeding hopper, the outer surface of one side of feeding hopper away from driving motor is fixedly installed with separation barrel, and separation barrel is conical design, and the outer surface of separation barrel and the outer surface of spiral conveying extrusion blade are tightly frictionally connected.

[0006] Preferably, the outer surface of one side of the separation barrel is fixedly installed with an extrusion solenoid valve, and a push extrusion mechanism is provided between the extrusion solenoid valve and the fermentation tank.

[0007] By the above technical scheme, the sludge passing through the extrusion electromagnetic valve can be blocked during extrusion, so that the sludge can be more easily extruded during dehydration, and the sludge can be more easily dehydrated.

[0008] Preferably, the push extrusion mechanism comprises a filter screen fixedly installed on one side of the extrusion electromagnetic valve, another extrusion electromagnetic valve fixedly installed on the other end of the filter screen, the other extrusion electromagnetic valve connected with the fermentation tank, the extrusion electromagnetic valve fixedly connected with the water tray, hydraulic cylinders fixedly installed on the outer surfaces of the two sides of the water tray, the output ends of the hydraulic cylinders penetrating through the outer surfaces of the water tray, and extrusion plates slidingly installed on the outer surfaces of the two sides of the water tray, the outer surfaces of the extrusion plates abutting the outer surfaces of the filter screen.

[0009] By the above technical scheme, the sludge preliminarily dehydrated and discharged into the filter screen can be blocked by the extrusion electromagnetic valve, so that the filter screen can be in a closed state, and then the hydraulic cylinders can be started to push the extrusion plates to extrude the filter screen, so that the sludge stored in the filter screen can be extruded again to remove part of the water in the sludge.

[0010] Preferably, the inside of the water tray is designed to be inclined, a water outlet is formed in the outer surface of one side of the water tray, and the water tray is located below the separation barrel and the filter screen.

[0011] By the above technical scheme, the water extruded from the separation barrel can be collected by the water tray, and the water in the sludge in the filter screen can also be collected, so that the separated water in the sludge can be guided and flowed along the inclined surface of the water tray, and the separation barrel and the extrusion plates can also be easily cleaned.

[0012] Preferably, the fermentation tank is buried underground, a discharge electromagnetic valve is fixedly installed on the outer surface of the fermentation tank, and a discharge diaphragm pump is fixedly installed at one end of the discharge electromagnetic valve.

[0013] By the above technical scheme, the fermentation tank is buried underground, so that the heat preservation of the fermentation tank can be improved, and the fermentation speed of the sludge stored in the fermentation tank can be improved.

[0014] Preferably, an air suction pump is fixedly installed on the outer surface of the fermentation tank, and an air exchange and purification mechanism is arranged between the air suction pump and the fermentation tank.

[0015] By the above technical scheme, the gas generated by fermentation in the fermentation tank can be easily sucked, the gas generated by the sludge during fermentation can be easily extracted by the air suction pump, and the communication between the fermentation tank and the outside can be controlled by the electromagnetic valve.

[0016] Preferably, the ventilation and purification mechanism comprises: an exhaust pipe, which is installed through the outer surface of the fermentation tank, and a spray chamber is fixedly installed on one side of the outer surface of the fermentation tank and connected with the exhaust pipe, one end of the outer surface of the exhaust pipe is fixedly installed with an air inlet electromagnetic valve, and the spray chamber is connected with an air suction pump.

[0017] With the above technical scheme, when the sludge in the fermentation tank is fermented, the gas is discharged outward through the exhaust pipe, at this time, the air suction pump is started to suck the gas into the spray chamber, the gas is settled in the spray chamber, and then harmless treatment is carried out, and finally the gas is discharged outward from the air suction pump, so that the gas generated during fermentation does not pollute the environment.

[0018] Compared with the prior art, the sludge aerobic fermentation device with deep dewatering and improved heat value has the advantages that:

[0019] 1. The sludge can be stored through the feeding hopper, a large amount of sludge can be rotated and conveyed by the rotation of the driving motor to drive the spiral conveying and extruding blade, the sludge can be continuously sent into the separation barrel for extrusion and separation, and the sludge can be extruded and compressed to remove a large amount of water in the sludge, thereby reducing the decrease of fermentation quality caused by high water content during subsequent fermentation of the sludge;

[0020] 2. After the sludge is initially dewatered by the rotation and extrusion of the separation barrel and the spiral conveying and extruding blade, the extrusion electromagnetic valve is opened, the sludge after initial dewatering can be extruded into the filter screen again, when the sludge in the filter screen accumulates to a certain amount, the extrusion electromagnetic valve is closed, then the hydraulic cylinder is started and the extrusion plate is pushed out, the extrusion plates can be close to each other to extrude the sludge stored in the filter screen again, so that the sludge in the filter screen can be dewatered again, and the dewatering property of the sludge is further improved;

[0021] 3. The water extruded from the separation barrel and the sludge in the filter screen can be collected by the water collecting tray, so that the separated water can be guided and moved along the inclined surface of the water collecting tray and concentrated, and then discharged outward through the water outlet of the water collecting tray, and the leakage design of the separation barrel and the filter screen can facilitate the cleaning of the separation barrel and the filter screen;

[0022] 4. When the sludge in the fermentation tank is fermented, some harmful gases will be generated, at this time, the gases will be discharged from the fermentation tank by the suction of the air suction pump, so that the gases can enter the inside of the spray chamber through the exhaust pipe, the harmful substances in the gases can be settled and adsorbed by the water sprayed from the spray chamber, the treated gases can be discharged outward from the air suction pump, and the gases generated during fermentation can be treated before being discharged outward, so as not to pollute the atmosphere. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the fermenter and feeding hopper of this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the separation bucket and water tray of this utility model;

[0025] Figure 3 This is a cross-sectional three-dimensional structural diagram of the feeding hopper and the screw conveyor extrusion blade of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the exhaust pipe and spray chamber of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the discharge solenoid valve and discharge diaphragm pump of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the ventilation solenoid valve and spray chamber of this utility model.

[0029] In the diagram: 1. Fermentation tank; 2. Feed hopper; 3. Drive motor; 4. Screw conveyor extrusion blades; 5. Separation tank; 6. Extrusion solenoid valve; 7. Water tray; 8. Filter screen; 9. Hydraulic cylinder; 10. Extrusion plate; 11. Exhaust pipe; 12. Ventilation solenoid valve; 13. Spray chamber; 14. Suction pump; 15. Discharge solenoid valve; 16. Discharge diaphragm pump. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 This utility model provides a technical solution: an aerobic fermentation device for sludge that can deeply dehydrate and improve calorific value, including a fermentation tank 1, a feeding hopper 2 fixedly installed on one side of the fermentation tank 1, and the inside of the feeding hopper 2 is inclined, a drive motor 3 fixedly installed on one side of the outer surface of the feeding hopper 2, and the output end of the drive motor 3 penetrates through the outer surface of the feeding hopper 2, a water tray 7 fixedly installed on one side of the outer surface of the feeding hopper 2, and the water tray 7 is located between the fermentation tank 1 and the feeding hopper 2, a separation barrel 5 fixedly installed on the outer surface of the feeding hopper 2 away from the drive motor 3, and the separation barrel 5 is conical in design, and the outer surface of the separation barrel 5 is tightly frictionally connected to the outer surface of the screw conveyor extrusion blade 4.

[0032] A large amount of sludge can be fed through the feeding hopper 2, and the sludge can be more easily discharged through the inclined design of the feeding hopper 2. The rotation of the driving motor 3 can drive the spiral conveying and extruding blade 4 to move, so that the spiral conveying and extruding blade 4 can drive the sludge to move and enter the separation barrel 5, so that the sludge can be extruded and compressed during movement to remove most of the water in the sludge, so that the water content in the sludge can be reduced, and the quality of the subsequent sludge fermentation can be better.

[0033] An extrusion electromagnetic valve 6 is fixedly installed on one side of the outer surface of the separation barrel 5, and a push extrusion mechanism is arranged between the extrusion electromagnetic valve 6 and the fermentation tank 1.

[0034] The extrusion electromagnetic valve 6 can block the sludge, so that the sludge inside the filter screen 8 can be more easily dehydrated again.

[0035] The push extrusion mechanism comprises: a filter screen 8 fixedly installed on one side of the outer surface of the extrusion electromagnetic valve 6, and another extrusion electromagnetic valve 6 fixedly installed on the other end of the filter screen 8, the other extrusion electromagnetic valve 6 connected with the fermentation tank 1, the extrusion electromagnetic valve 6 fixedly connected with the water tray 7, the water tray 7 having a hydraulic cylinder 9 fixedly installed on the outer surface of both sides, the output end of the hydraulic cylinder 9 penetrating through the outer surface of the water tray 7, and the water tray 7 having an extrusion plate 10 slidingly installed on the outer surface of both sides, and the outer surface of the extrusion plate 10 being in close contact with the outer surface of the filter screen 8.

[0036] When the sludge enters the inside of the filter screen 8, the extrusion plate 10 can be driven to move by the hydraulic cylinder 9, so that the extrusion plate 10 can move closer to each other and extrude the sludge inside the filter screen 8, so that the sludge stored in the filter screen 8 can be extruded again, and the water in the sludge can be separated again.

[0037] The inside of the water tray 7 is inclined, and a water outlet is formed on one side of the outer surface of the water tray 7, and the water tray 7 is located below the separation barrel 5 and the filter screen 8.

[0038] When the sludge in the separation barrel 5 is extruded to separate the water, the water will enter the inside of the water tray 7, and after the sludge in the filter screen 8 is extruded by the extrusion plate 10, the separated water will also enter the inside of the water tray 7, so that the separated water can be guided and flowed by the inclined surface of the water tray 7, so that the separated water can be discharged outward through the water outlet, and the leakage of the separation barrel 5 and the filter screen 8 can be easily cleaned.

[0039] The fermentation tank 1 is buried underground, and the outer surface of the fermentation tank 1 is fixedly installed with a discharging electromagnetic valve 15, and one end of the discharging electromagnetic valve 15 is fixedly installed with a discharging diaphragm pump 16.

[0040] The fermentation tank 1 is buried underground, which can effectively improve the heat preservation, so that the sludge can be fermented more quickly and easily in the fermentation tank 1, and the discharge of the sludge after fermentation can be controlled through the discharge electromagnetic valve 15, and the sludge after fermentation can be pumped out from the fermentation tank 1 through the discharge diaphragm pump 16.

[0041] The outer surface of the fermentation tank 1 is fixedly installed with the air suction pump 14, and the air suction pump 14 is provided with a gas exchange and purification mechanism.

[0042] The gas generated during the fermentation in the fermentation tank 1 can be pumped out through the exhaust pipe 11 by the air suction pump 14, so that the gas will not be excessively accumulated in the fermentation tank 1, and the communication and disconnection between the fermentation tank 1 and the outside air can be controlled through the air valve 12.

[0043] The gas exchange and purification mechanism comprises an exhaust pipe 11, which is installed through the outer surface of the fermentation tank 1, and a spraying chamber 13 is fixedly installed on one side of the outer surface of the fermentation tank 1, and the spraying chamber 13 is connected with the exhaust pipe 11, and an air valve 12 is fixedly installed on one end of the outer surface of the exhaust pipe 11, and the spraying chamber 13 is connected with the air suction pump 14.

[0044] When the sludge in the fermentation tank 1 is fermented to generate gas, the air suction pump 14 can be started to suck the generated gas into the inside of the spraying chamber 13, so that the gas entering the spraying chamber 13 can be purified and settled, and the harmful substances in the gas can be removed, and the purified gas can be discharged from the air suction pump 14, so that the gas generated during the fermentation can be purified and discharged, and the gas generated during the fermentation will not pollute the atmosphere.

[0045] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An aerobic fermentation device for sludge that can deeply dehydrate and improve calorific value, comprising a fermentation tank (1), wherein a feeding hopper (2) is fixedly installed on one side of the fermentation tank (1), and the inside of the feeding hopper (2) is inclined; a drive motor (3) is fixedly installed on the outer surface of one side of the feeding hopper (2), and the output end of the drive motor (3) penetrates the outer surface of the feeding hopper (2), characterized in that: The outer surface of one side of the feeding hopper (2) is fixedly installed with a water containing tray (7), and the water containing tray (7) is located between the fermentation tank (1) and the feeding hopper (2), the outer surface of the side of the feeding hopper (2) away from the driving motor (3) is fixedly installed with a separation barrel (5), and the separation barrel (5) is designed in a conical shape, and the outer surface of the separation barrel (5) is in close frictional connection with the outer surface of the spiral conveying and extruding blade (4).

2. The sludge aerobic fermentation device capable of deep dewatering and improving heat value according to claim 1, characterized in that: The outer surface of one side of the separation barrel (5) is fixedly installed with an extruding electromagnetic valve (6), and a pushing extruding mechanism is arranged between the extruding electromagnetic valve (6) and the fermentation tank (1).

3. The sludge aerobic fermentation device for deep dewatering and improving heat value according to claim 2, characterized in that: The pushing extruding mechanism comprises a filter screen (8) fixedly installed on the outer surface of one side of the extruding electromagnetic valve (6), and another extruding electromagnetic valve (6) is fixed on the other end of the filter screen (8), the other extruding electromagnetic valve (6) is connected with the fermentation tank (1), the extruding electromagnetic valve (6) is fixedly connected with the water containing tray (7), the outer surfaces of the two sides of the water containing tray (7) are fixedly installed with hydraulic cylinders (9), the output ends of the hydraulic cylinders (9) penetrate through the outer surface of the water containing tray (7), the outer surfaces of the two sides of the water containing tray (7) are slidably installed with extruding plates (10), and the outer surface of the extruding plate (10) is in close contact with the outer surface of the filter screen (8).

4. The sludge aerobic fermentation device capable of deep dewatering and improving heat value according to claim 1, characterized in that: The inside of the water containing tray (7) is designed to be inclined, and a water outlet is formed in the outer surface of one side of the water containing tray (7), and the water containing tray (7) is located below the separation barrel (5) and the filter screen (8).

5. The sludge aerobic fermentation device capable of deep dewatering and improving heat value according to claim 1, characterized in that: The fermentation tank (1) is buried underground, the outer surface of the fermentation tank (1) is fixedly installed with a discharging electromagnetic valve (15), and one end of the discharging electromagnetic valve (15) is fixedly installed with a discharging diaphragm pump (16).

6. The sludge aerobic fermentation device capable of deep dewatering and improving heat value according to claim 1, characterized in that: The outer surface of the fermentation tank (1) is fixedly installed with an air suction pump (14), and a gas exchange and purification mechanism is arranged between the air suction pump (14) and the fermentation tank (1).

7. The sludge aerobic fermentation device for deep dewatering and improving heat value according to claim 6, characterized in that: The gas exchange and purification mechanism comprises an exhaust pipe (11) penetratingly installed on the outer surface of the fermentation tank (1), the outer surface of one side of the fermentation tank (1) is fixedly installed with a spraying chamber (13), and the spraying chamber (13) is connected with the exhaust pipe (11), one end of the outer surface of the exhaust pipe (11) is fixedly installed with an air inlet electromagnetic valve (12), and the spraying chamber (13) is connected with the air suction pump (14).

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