Artificial filter layer drying device for sludge drying

Abstract

The utility model relates to the technical field of sludge treatment, in particular to an artificial filter layer drying device for drying sludge, which is characterized in that an infrared heating pipe group is fixedly mounted on a base, first fans are uniformly mounted on the base, a conical scraper is slidably mounted on the base, a feeding cylinder is fixedly mounted on the base, and a second fan is uniformly mounted on the feeding cylinder. A spiral feeding rod is rotatably mounted in the feeding cylinder, a second motor is fixedly mounted on the feeding cylinder, and an output shaft of the second motor is fixedly connected with the spiral feeding rod; a spiral feeding rod conveys sludge at the top end of a feeding cylinder to a conveying belt, the sludge moves towards a conical scraping plate, the conical scraping plate enables the accumulated sludge to be spread towards the two ends through the inclined face of the conical scraping plate, the sludge is spread to be flat, meanwhile, a first fan is started to suck external air into a base, then the external air is heated by an infrared heating pipe set to form hot air, and the hot air is heated to the top end of the feeding cylinder. The sludge can be uniformly heated, and the effect of ensuring that the sludge can be fully dried is achieved.

Description

Technical Field

[0001] This utility model relates to the field of sludge treatment technology, and in particular to an artificial filter bed drying device for sludge drying. Background Technology

[0002] In the field of sludge treatment, achieving efficient sludge drying is crucial for subsequent disposal and utilization. An artificial filter bed drying device for sludge drying plays a key role in improving sludge drying efficiency and optimizing drying effects. In practical applications, such drying devices typically require the following technologies:

[0003] 1. Ventilation Technology: Equipped with a ventilation system, which can combine natural ventilation and forced ventilation. Natural ventilation utilizes natural air convection, and by rationally designing the location and size of the ventilation openings of the drying device, it removes evaporated moisture;

[0004] 2. Water collection and treatment technology: A special water collection device is set up to collect the water separated from the sludge.

[0005] During the operation of existing sludge drying equipment, due to differences in the characteristics of the sludge itself (such as uneven distribution of viscosity and moisture content), the sludge is prone to uneven distribution within the drying equipment. In this case, the sludge in the thinner areas has a large contact area with the heat medium and high heat transfer efficiency, which can quickly complete the drying process. However, the sludge in the thicker areas has a longer heat conduction path due to the excessive accumulation of material, making it difficult for internal moisture to evaporate and be discharged effectively. This not only significantly reduces the drying efficiency but also easily leads to problems such as localized sludge not being dried, which seriously affects the overall quality and treatment effect of sludge drying and increases the difficulty and cost of subsequent treatment. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an artificial filter layer drying device for sludge drying. This device solves the problem that, during the operation of existing sludge drying devices, uneven sludge distribution within the drying equipment is easily caused by differences in sludge characteristics (such as uneven viscosity and moisture content). In such cases, thinner areas of sludge have a larger contact area with the heat medium and higher heat transfer efficiency, enabling rapid drying. However, thicker areas of sludge, due to excessive material accumulation, have a longer heat conduction path, making it difficult for internal moisture to evaporate and be effectively discharged. This not only significantly reduces drying efficiency but also easily leads to problems such as localized undried areas, seriously affecting the overall quality and treatment effect of sludge drying, and increasing the difficulty and cost of subsequent treatment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An artificial filter bed drying device for sludge drying includes a base, with conveyor rollers symmetrically and rotatably mounted at both ends of the base, a conveyor belt installed between the two conveyor rollers, a first motor fixedly mounted on the base, a synchronous pulley assembly installed between the output shaft of the first motor and the two conveyor rollers, an infrared heating tube assembly fixedly mounted on the base, a first fan evenly mounted on the base, a conical scraper slidably mounted on the base, a threaded rod rotatably mounted on the conical scraper, the threaded rod being threadedly connected to the base, a feed cylinder fixedly mounted on the base, a spiral feeding rod rotatably mounted inside the feed cylinder, a knob fixedly mounted on the threaded rod, and a second motor fixedly mounted on the feed cylinder, the output shaft of the second motor being fixedly connected to the spiral feeding rod.

[0009] Preferably, a first filter screen is fixedly installed on the base.

[0010] Preferably, an air guide cover is fixedly installed on the base.

[0011] Preferably, a three-way pipe is fixedly installed on the feed cylinder.

[0012] Preferably, a second filter screen is fixedly installed on the three-way pipe.

[0013] Preferred option: A second fan is installed inside the tee pipe.

[0014] Preferably, a straight scraper is slidably mounted on the side end of the base.

[0015] Preferably, a spring is installed between the straight scraper and the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. During operation, the conveying assembly transports the sludge, after preliminary filtration by the manual filter layer, to the feed cylinder. Then, the second motor starts, driving the screw feeder to rotate counterclockwise. The screw feeder transports the sludge from the top of the feed cylinder to the conveyor belt. The speed at which the screw feeder transports the sludge is controlled by the second motor. The first motor starts, driving two conveying rollers to rotate via the synchronous pulley set. The two conveying rollers cause the conveyor belt to move the sludge towards the conical scraper. The conical scraper, with its inclined surface, spreads the accumulated sludge to both ends, flattening it. The flattened sludge continues to move. After the infrared heating tube assembly starts, it heats the passing sludge. Simultaneously, the first fan starts, drawing outside air into the base, which is then heated by the infrared heating tube assembly to form hot air. This hot air heats the sludge evenly, ensuring that the sludge is fully dried, reducing the difficulty and cost of subsequent processing.

[0018] Second, the start-up of the second fan increases the airflow velocity inside the three-way pipe, thereby generating negative pressure. This draws air out of the feed cylinder through the three-way pipe, creating negative pressure within the feed cylinder. The feed cylinder then draws out hot air containing a large amount of water vapor from the base through the air guide hood. The extracted hot air heats the feed cylinder, preheating the sludge passing through it and allowing subsequent sludge to heat up faster. Simultaneously, the cooler sludge causes the water vapor in the hot air to condense into small water droplets. The cooled air and water are then discharged through the three-way pipe. By using the hot air containing water vapor to preheat the sludge, the energy utilization rate is improved. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0020] Figure 1 This is an overall structural diagram of the present invention.

[0021] Figure 2 This is a cross-sectional structural diagram of the base of this utility model.

[0022] Figure 3 This is a structural diagram of the base of this utility model.

[0023] Figure 4 This is a partial structural diagram of the present invention.

[0024] Figure 5 This is a cross-sectional view of the feed cylinder of this utility model.

[0025] Legend: 1. Base, 2. Conveyor roller, 3. Conveyor belt, 4. First motor, 5. Synchronous pulley assembly, 6. Infrared heating tube assembly, 7. First fan, 8. Conical scraper, 9. Threaded rod, 11. Feed cylinder, 12. Spiral feed rod, 13. Knob, 14. First filter screen, 15. Air guide hood, 16. T-pipe, 17. Second filter screen, 18. Second fan, 19. Straight scraper, 21. Spring, 22. Second motor. Detailed Implementation

[0026] This application provides an artificial filter bed drying device for sludge drying, effectively solving the problem of uneven sludge distribution within the drying equipment caused by differences in sludge characteristics (such as uneven viscosity and moisture content). In this case, the thinner sludge areas have a larger contact area with the heat medium and higher heat transfer efficiency, enabling rapid drying. However, the thicker sludge areas, due to excessive material accumulation, have a longer heat conduction path, making it difficult for internal moisture to evaporate and be effectively discharged. This not only significantly reduces drying efficiency but also easily leads to localized drying problems. Issues such as incomplete sludge drying severely affect the overall quality and treatment effect of sludge drying, increasing the difficulty and cost of subsequent treatment. In operation, the conveying assembly transports the sludge, after preliminary filtration by the manual filter layer, to the feed cylinder. Then, the second motor starts, driving the screw feeder to rotate counterclockwise. The screw feeder then transports the sludge from the top of the feed cylinder to the conveyor belt. The speed at which the screw feeder transports the sludge is controlled by the second motor. The first motor, upon starting, drives two conveyor rollers to rotate via a synchronous pulley set. These rollers cause the conveyor belt to move the sludge. The sludge moves towards the conical scraper, which spreads the accumulated sludge outwards using its inclined surface, leveling it out. The leveled sludge continues to move, and the infrared heating tube assembly heats the passing sludge. Simultaneously, the first fan draws outside air into the base, where it is heated by the infrared heating tubes to form hot air, which heats the sludge evenly, ensuring thorough drying and reducing subsequent processing difficulty and costs. The second fan increases the airflow velocity inside the three-way pipe. The process is rapid, creating negative pressure that draws air out of the feed cylinder through the three-way pipe. This negative pressure then draws out hot air containing a large amount of water vapor from the base through the air guide hood. The extracted hot air heats the feed cylinder, preheating the sludge passing through it and allowing subsequent sludge to heat up faster. Meanwhile, the cooler sludge causes the water vapor in the hot air to condense into small water droplets. The cooled air and water are then discharged through the three-way pipe. By using the hot air containing water vapor to preheat the sludge, the energy efficiency is improved.

[0027] Example

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the technical solution in this application embodiment effectively solves the problem that, during the operation of existing sludge drying devices, uneven distribution of sludge within the drying equipment is easily caused by differences in the characteristics of the sludge itself (such as uneven viscosity and moisture content distribution). In this case, the sludge in the thinner areas has a large contact area with the heat medium and high heat transfer efficiency, enabling rapid drying. However, the sludge in the thicker areas has a longer heat conduction path due to excessive material accumulation, making it difficult for internal moisture to evaporate and be discharged effectively. This not only significantly reduces the drying efficiency but also easily leads to problems such as localized sludge not being dried, seriously affecting the overall quality and treatment effect of sludge drying and increasing the difficulty and cost of subsequent treatment. The overall approach is as follows:

[0029] To address the problems existing in the prior art, this utility model provides an artificial filter bed drying device for sludge drying, including a base 1, conveying rollers 2 symmetrically rotated at both ends of the base 1, a conveyor belt 3 installed between the two conveying rollers 2, a first motor 4 fixedly installed on the base 1, a synchronous pulley group 5 installed between the output shaft of the first motor 4 and the two conveying rollers 2, and an infrared heating tube group 6 fixedly installed on the base 1.

[0030] A first fan 7 is evenly installed on the base 1. A conical scraper 8 is slidably installed on the base 1. A threaded rod 9 is rotatably installed on the conical scraper 8. The threaded rod 9 is threadedly connected to the base 1. A feed cylinder 11 is fixedly installed on the base 1. A spiral feeding rod 12 is rotatably installed inside the feed cylinder 11. A knob 13 is fixedly installed on the threaded rod 9. A second motor 22 is fixedly installed on the feed cylinder 11.

[0031] The output shaft of the second motor 22 is fixedly connected to the screw feed rod 12. A first filter screen 14 is fixedly installed on the base 1. An air guide shroud 15 is fixedly installed on the base 1. A three-way pipe 16 is fixedly installed on the feed cylinder 11. A second filter screen 17 is fixedly installed on the three-way pipe 16. A second fan 18 is installed inside the three-way pipe 16. A straight scraper 19 is slidably installed on the side end of the base 1. A spring 21 is installed between the straight scraper 19 and the base 1.

[0032] Base 1: As the basic support structure of the entire drying device, it provides an installation platform for many components such as conveyor roller 2, first motor 4, infrared heating tube group 6, and first fan 7, ensuring the relative position stability of each component during operation and ensuring the overall stability of the drying device. At the same time, it is also the main spatial carrier for sludge drying, containing the conveyor belt 3 and the sludge moving on it, and achieving sludge drying treatment through cooperation with other components.

[0033] Conveying roller 2: It works in conjunction with the conveyor belt 3 and rotates under the drive of the first motor 4 through the synchronous pulley group 5, thereby driving the conveyor belt 3 to move and thus moving the sludge placed on the conveyor belt 3, realizing the conveying of sludge in the drying device. It is one of the key components for the continuity of the sludge drying process.

[0034] Conveyor belt 3: Used to carry and transport sludge. Driven by conveyor roller 2, it transports the sludge from the feeding position to the drying area, so that it can pass through the drying process in sequence, such as being flattened by conical scraper 8 and heated by infrared heating tube group 6, to complete the entire drying process.

[0035] First motor 4: As the power source for the movement of conveyor belt 3, its output shaft is connected to two conveyor rollers 2 through synchronous pulley set 5. After starting, it transmits power to conveyor rollers 2 through synchronous pulley set 5, drives conveyor belt 3 to move sludge, and provides power support for the conveying of sludge in the device.

[0036] Synchronous belt pulley set 5: It plays the role of transmitting power. It transmits the power output from the first motor 4 to the two conveying rollers 2 synchronously, ensuring that the two conveying rollers 2 can rotate synchronously, so that the conveyor belt 3 runs smoothly and ensures the stability and continuity of the sludge conveying process.

[0037] Infrared heating tube group 6: After starting, it heats the sludge passing through. By emitting infrared rays, the sludge absorbs heat and rises in temperature. Together with the hot air generated by the first fan 7, it dries the sludge. It is the key heating component for achieving sludge drying and ensures that the sludge can receive sufficient heat to evaporate moisture.

[0038] First fan 7: After starting, it draws outside air into base 1. This air is heated by infrared heating tube group 6 to form hot air. The hot air heats the sludge, promotes the evaporation of water in the sludge, and helps to achieve uniform drying of the sludge. By providing hot air flow, the drying effect and efficiency are enhanced.

[0039] Conical scraper 8: When the accumulated sludge moves toward it, it uses its own inclined surface to spread the sludge to both ends, so that the sludge is flattened on the conveyor belt 3. This increases the contact area between the sludge and the hot air, ensuring that the sludge can be heated evenly during the subsequent movement, improving the drying effect, and avoiding insufficient drying in some areas due to sludge accumulation.

[0040] Threaded rod 9: By rotating the threaded rod 9, the position of the conical scraper 8 on the base 1 can be adjusted to adapt to the sludge spreading requirements of different thicknesses or flow rates, so that the device can flexibly cope with sludge drying treatment under different working conditions.

[0041] Feed cylinder 11: Feed cylinder 11 is used to receive sludge after preliminary filtration by manual filter layer, and convey the sludge to conveyor belt 3 through screw feed rod 12. It is the inlet channel and temporary storage space for sludge to enter the drying device, and plays a buffering and control role in the input of sludge.

[0042] Screw feeder 12: Driven by the second motor 22, it rotates counterclockwise to transport the sludge at the top of the feed cylinder 11 to the conveyor belt 3. By controlling the speed of the second motor 22, the speed at which the screw feeder 12 transports the sludge can be precisely controlled, thereby adjusting the flow rate of the sludge into the drying device and ensuring the stability and continuity of the drying process.

[0043] Knob 13: Allows operators to manually rotate the threaded rod 9 to adjust the position of the conical scraper 8 to meet different sludge leveling requirements, enabling manual intervention and adjustment of the sludge state during the drying process;

[0044] First filter 14: Its function may be to filter impurities in the passing air, prevent impurities from entering the drying device and affecting the drying effect, keep the working environment clean, and help protect other components from damage by impurities.

[0045] Air guide shroud 15: When a negative pressure is formed inside the feed cylinder 11, the air guide shroud 15 guides the hot air containing a large amount of water vapor in the base 1 into the feed cylinder 11, so that the hot air can preheat the sludge in the feed cylinder 11, improve energy utilization, and optimize the flow path of the hot air to enhance the heat transfer effect.

[0046] Three-way pipe 16: After the second fan 18 is started, the air flow inside the three-way pipe 16 increases and generates negative pressure, which draws out the air in the feed cylinder 11. At the same time, the feed cylinder 11 draws out the hot air in the base 1 through the air guide shroud 15. Finally, the used air and condensate are discharged. It is a key channel component for realizing air circulation, heat exchange and water vapor discharge.

[0047] Second filter 17: filters the air passing through the three-way pipe 16 and any impurities it may carry, preventing impurities from damaging other components during air circulation, ensuring that the exhaust air is relatively clean, and also preventing impurities from affecting the heat exchange effect and the normal operation of the drying device.

[0048] Second fan 18: After starting, it accelerates the air flow inside the three-way pipe 16 and generates negative pressure. On the one hand, it draws out the air in the feed cylinder 11, so that the feed cylinder 11 forms negative pressure and thus draws out the hot air in the base 1. On the other hand, it accelerates the air flow speed, promotes the heat exchange process and the discharge of water vapor. It is one of the power components for realizing air circulation and heat utilization.

[0049] Straight scraper 19: Under the elastic force of spring 21, it presses the conveyor belt 3 tightly. After the sludge on the conveyor belt 3 is dried, the straight scraper 19 scrapes the dried sludge off the conveyor belt 3 to complete the collection of dried sludge. It ensures that the conveyor belt 3 can continuously carry out sludge conveying and drying work. It is an important component in the sludge discharge process after drying.

[0050] Spring 21: Provides elasticity to the straight scraper 19, enabling it to always press firmly against the conveyor belt 3, ensuring that the dried sludge can be effectively scraped off during the operation of the conveyor belt 3, thus ensuring the smoothness and stability of the discharge.

[0051] The second motor 22: after starting, it drives the screw feeder 12 to rotate, controls the speed at which the screw feeder 12 conveys sludge, and thus controls the flow rate of sludge entering the drying device. It is the power control component of the feeding process and plays a key driving and regulating role in the feeding process of the drying device.

[0052] Working principle:

[0053] In the first step, during use, the conveying assembly will transport the sludge, which has undergone preliminary filtration by the manual filter layer, to the feed cylinder 11. Then, the second motor 22 starts and drives the screw feeder 12 to rotate counterclockwise. The screw feeder 12 will transport the sludge at the top of the feed cylinder 11 to the conveyor belt 3. The speed at which the screw feeder 12 transports the sludge is controlled by the second motor 22. The first motor 4 starts and drives the two conveying rollers 2 to rotate through the synchronous pulley group 5. The two conveying rollers 2 will cause the conveyor belt 3 to move the sludge towards the conical scraper 8. The conical scraper 8 will spread the accumulated sludge to both ends through its own inclined surface, making the sludge flat. The flattened sludge will continue to move. After the infrared heating tube group 6 starts, it will heat the passing sludge. At the same time, the first fan 7 starts and draws outside air into the base 1, which is then heated by the infrared heating tube group 6 to form hot air. The hot air will heat the sludge, so that the sludge can be heated evenly, achieving the effect of ensuring that the sludge is fully dried.

[0054] In the second step, the second fan 18 starts, which increases the airflow inside the three-way pipe 16, thereby generating negative pressure. The air in the feed cylinder 11 is drawn out by the three-way pipe 16, and the feed cylinder 11 will form a negative pressure. The feed cylinder 11 will draw out the hot air containing a large amount of water vapor from the base 1 through the air guide shroud 15. The drawn hot air will heat the feed cylinder 11, thereby preheating the sludge passing through the feed cylinder 11, so that the subsequent sludge heats up faster. At the same time, the lower temperature sludge will cause the water vapor in the high temperature air to condense into small water droplets. The cooled air and water will be discharged through the three-way pipe 16. The hot air containing water vapor is used to preheat the sludge, which achieves the effect of improving energy utilization. The straight scraper 19 will press tightly against the conveyor belt 3 under the elastic force of the spring 21, so that the dried sludge on the conveyor belt 3 will be scraped off.

[0055] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An artificial filter layer dewatering device for sludge dewatering, comprising a base (1), two ends of the base (1) are symmetrically rotatably installed with conveying rollers (2), a conveying belt (3) is installed between the two conveying rollers (2), a first motor (4) is fixedly installed on the base (1), a synchronous belt pulley set (5) is installed between the output shaft of the first motor (4) and the two conveying rollers (2), characterized in that, An infrared heating tube assembly (6) is fixedly installed on the base (1). A first fan (7) is evenly installed on the base (1). A conical scraper (8) is slidably installed on the base (1). A threaded rod (9) is rotatably installed on the conical scraper (8). The threaded rod (9) is threadedly connected to the base (1). A feed cylinder (11) is fixedly installed on the base (1). A spiral feeding rod (12) is rotatably installed inside the feed cylinder (11). A knob (13) is fixedly installed on the threaded rod (9). A second motor (22) is fixedly installed on the feed cylinder (11). The output shaft of the second motor (22) is fixedly connected to the spiral feeding rod (12).

2. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 1 wherein, A first filter screen (14) is fixedly installed on the base (1).

3. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 1, characterised in that, An air guide cover (15) is fixedly installed on the base (1).

4. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 1, characterised in that, A three-way pipe (16) is fixedly installed on the feed cylinder (11).

5. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 4 wherein, A second filter screen (17) is fixedly installed on the three-way pipe (16).

6. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 4 wherein, The second fan (18) is installed inside the tee pipe (16).

7. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 1, characterised in that, A straight scraper (19) is slidably installed on the side end of the base (1).

8. A manufactured filter bed dewatering device for dewatering sludge as claimed in claim 7 wherein, A spring (21) is installed between the straight scraper (19) and the base (1).

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