Sludge drying device

Abstract

The utility model discloses a sludge drying device which comprises a frame main body, the frame main body comprises a left frame and a right frame which are connected with each other, one end of the top of the left frame is provided with a feed port, and one end of the bottom of the left frame is provided with a material collector; a conveying assembly is arranged on the left frame and comprises a first conveying device and a third conveying device which are arranged in parallel, and the first conveying device is located above the third conveying device; the starting end of the first conveying device is connected with the feeding port, the tail end of the third conveying device is connected with the material collector, and materials can be conveyed to the starting end of the third conveying device from the tail end of the first conveying device. A plurality of hot air units are arranged on the right frame and used for conveying hot air to the position below the third conveying device. According to the sludge drying device, the sludge drying efficiency is improved through hot air heating in cooperation with the multi-stage conveying belt.

Description

Technical Field

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

[0002] The water content of sludge produced by sewage treatment plants is generally around 50%. Sludge dehydration is a key step in its treatment process, but the difficulty of deep dehydration of sludge has become a bottleneck problem restricting the harmless treatment of sludge.

[0003] The patent with publication number CN2019207444694 discloses a sludge drying equipment, which uses the discharging port, exposure tank, forward and reverse motor, screw, slider, connecting frame and scraper needle to initially squeeze the sludge and discharge it into the exposure tank, and then uses sunlight to expose the sludge to achieve sludge drying. This form of treatment is greatly affected by factors such as weather, and the efficiency of sludge drying in this form is also relatively low. How to design a drying device that can ensure the effect of sludge drying is a problem we need to solve. Summary of the invention

[0004] The utility model aims to provide a sludge drying device to solve the problem of low sludge drying efficiency in the prior art.

[0005] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0006] A sludge drying device, comprising

[0007] A frame body, the frame body comprising a left frame and a right frame connected to each other, a feed port being provided at one end of the top of the left frame, and a receiver being provided at one end of the bottom;

[0008] A conveying assembly is arranged on the left frame, the conveying assembly comprises a first conveying device and a third conveying device arranged in parallel, the first conveying device is located above the third conveying device; the starting end of the first conveying device is connected to the feed port, the end of the third conveying device is connected to the receiver, and the material can be transported from the end of the first conveying device to the starting end of the third conveying device;

[0009] A plurality of hot air units are arranged on the right frame, and the hot air units are used to convey the hot air to the bottom of the third conveying device.

[0010] Furthermore, baffles are provided on the bottom and side surfaces of the left frame to form a cylindrical structure with an open top;

[0011] A vent for conveying hot air is provided on a baffle plate on a side of the left frame close to the right frame.

[0012] Furthermore, the conveying assembly also includes a second conveying device arranged between the first conveying device and the third conveying device, and the second conveying device is used to convey the material output by the first conveying device to the third conveying device.

[0013] Further, the first conveying device, the second conveying device and the third conveying device each include a wire mesh belt for conveying materials;

[0014] The mesh number of the steel wire mesh belt is 12-60.

[0015] Further, a guide plate is provided between the end of the first conveying device and the starting end of the second conveying device;

[0016] A guide plate is provided between the end of the second conveying device and the third conveying device.

[0017] Furthermore, the hot air unit includes a first heat exchange system, which includes two first heat exchange components for generating hot air and a first fan arranged between the two first heat exchange components for transporting the hot air to the left frame.

[0018] Furthermore, the first heat exchange component includes an evaporation-condensation component connected to the right frame and an air guide plate arranged between the evaporation-condensation component and the first fan.

[0019] Furthermore, the evaporation-condensation assembly comprises an evaporation assembly, a condensation assembly and an intermediate plate, wherein the intermediate plate is fixed to the right frame and forms a receiving space with the right frame;

[0020] The evaporation component and the condensation component are detachably connected in the accommodation space.

[0021] Further, the air guide plate is fixed in the right frame;

[0022] The sizes of the air guide holes on the air guide plates are different.

[0023] Furthermore, the conveying assembly further comprises a second conveying device disposed between the first conveying device and the third conveying device, wherein the second conveying device is used to convey the material outputted by the first conveying device to the third conveying device;

[0024] The hot air unit further comprises a second heat exchange system disposed above the first heat exchange system, wherein the second heat exchange system is used to transport the hot air between the first conveying device and the second conveying device.

[0025] According to the above technical solution, the beneficial effects of the utility model are:

[0026] The present application designs a first conveying device and a second conveying device which are arranged vertically. The two conveying devices increase the path length of the sludge movement. The hot air generated by multiple hot air units is transported to the bottom of the third conveying device to dry and heat the sludge. The hot air goes up to the first conveying device to dry and heat the sludge on the first conveying device. The efficiency of sludge drying is improved by hot air heating and a multi-stage conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the front view of the overall structure of the utility model;

[0028] Figure 2 for Figure 1 Left view of

[0029] Figure 3 for Figure 1 Schematic diagram of the local structure;

[0030] Figure 4 It is a schematic diagram of the hot air unit in the utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the hot air unit installed in the utility model;

[0032] Figure 6 for Figure 5 Schematic diagram of the local structure;

[0033] Figure 7 It is a structural schematic diagram of the wind guide plate in the utility model.

[0034] Among them: 1. frame body; 11. left frame; 12. right frame; 13. feed port; 14. receiver; 2. first conveying device; 3. second conveying device; 4. third conveying device; 5. first heat exchange system; 51. first heat exchange component; 511. evaporation component; 512. condensation component; 513. middle plate; 514. air guide plate; 52. first fan; 6. second heat exchange system; 61. second heat exchange component; 62. second fan; 7. guide plate. Implementation

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0036] It should be noted that in the description of the present invention, the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention rather than requiring that the present invention must be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. The terms "front", "rear", "left", "right", "up", and "down" used in the description of the present invention refer to the directions in the accompanying drawings, and the terms "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0037] The sludge drying device of the present application utilizes thermal energy to dry the sludge, and evaporates the water in the sludge by heating, thereby turning the sludge into a solid state.

[0038] like Figures 1 to 7 As shown, the present application discloses a sludge drying device, including a frame body 1, the frame body 1 includes a left frame 11 and a right frame 12 connected to each other, a feed port 13 is provided at one end of the top of the left frame 11, and a receiver 14 is provided at one end of the bottom; a conveying assembly is provided on the left frame 11, and the conveying assembly includes a first conveying device 2 and a third conveying device 4 arranged in parallel, and the first conveying device 2 is located above the third conveying device 4; the starting end of the first conveying device 2 is connected to the feed port 13, and the end of the third conveying device 4 is connected to the receiver 14, and the material can be transported from the end of the first conveying device 2 to the starting end of the third conveying device 4; a plurality of hot air units are provided on the right frame 12, and the hot air units are used to transport hot air to the bottom of the third conveying device 4.

[0039] When in use, the hot air unit works, and the hot air generated by the hot air unit is transported to the bottom of the third conveyor 4, and the hot air rises and passes through the third conveyor 4 and the first conveyor 2 in sequence. The sludge enters through the feed port 13 and falls into the starting end of the first conveyor 2, enters through the end of the first conveyor 2 to the starting end of the third conveyor 4, and finally flows from the end of the third conveyor 4 to the receiver 14.

[0040] During the rising process of the hot air, the sludge on the third conveyor 4 is first dried and heated, and then the sludge on the first conveyor 2 is dried and heated. Since the hot air passes through the third conveyor 4 and the first conveyor 2 successively, the heating and drying effect of the hot air on the sludge on the third conveyor 4 is better than the heating and drying effect of the sludge on the first conveyor 2, thereby ensuring the drying effect of the sludge.

[0041] In the present application, baffles are provided on the bottom and sides of the left frame 11 to form a cylindrical structure with an open top. This design prevents the hot air entering the left frame 11 from spreading around, so that the hot air can only flow upward. A vent for conveying hot air is provided on the baffle on the side of the left frame 11 close to the right frame 12 to ensure that the hot air can be conveyed into the left frame 11.

[0042] In a further embodiment, Figure 1 and Figure 2 As shown, the conveying assembly further includes a second conveying device 3 disposed between the first conveying device 2 and the third conveying device 4, and the second conveying device 3 is used to convey the material output by the first conveying device 2 to the third conveying device 4. The three-stage conveying form increases the path of sludge movement and improves the drying effect of the sludge.

[0043] The first conveyor 2, the second conveyor 3 and the third conveyor 4 all include a steel mesh belt for conveying materials; the mesh number of the steel mesh belt is 12-60, which can ensure that the hot air passes through the conveyor smoothly and the sludge does not fall directly from the conveyor. Furthermore, the moving speed of the steel mesh belt can be adjusted, and the speed is determined by the moisture content of the sludge and the temperature of the hot air output by the hot air unit.

[0044] The first conveying device 2, the second conveying device 3 and the third conveying device 4 arranged up and down transfer the sludge through the guide plate 7 at the end. Figure 3 As shown, when the sludge reaches the end of the first conveyor 2 and falls, the inclined guide plate 7 can guide the sludge to the starting end of the second conveyor 3. When the sludge falls after passing the end of the second conveyor 3, the inclined guide plate 7 can guide the sludge to the third conveyor 4.

[0045] After the hot air contacts the sludge, it transfers heat to the sludge, causing the water in it to evaporate, and the hot air is also cooled. After a period of drying, the water content in the dryer is reduced to a certain level, and the dried sludge is sent out of the dryer, completing the drying process.

[0046] In one embodiment, Figure 5-Figure 6 As shown, the hot air unit includes a first heat exchange system 5 , which includes two first heat exchange components 51 for generating hot air and a first fan 52 arranged between the two first heat exchange components 51 for conveying the hot air to the left frame 11 .

[0047] The first heat exchange assembly 51 includes an evaporation assembly 511, a condensation assembly 512, an intermediate plate 513 and an air guide plate 514. The intermediate plate 513 is fixed to the right frame 12 and forms a receiving space with the right frame 12. Specifically, the intermediate plate 513 is a plate-like structure with slots in the middle to allow air to flow. The right frame 12 is also provided with slide plates on the left and right sides of the intermediate plate 513. A receiving space is formed between the slide plates, the intermediate plate 513 and the right frame 12. The receiving space is used to install the evaporation assembly 511 and the condensation assembly 512. Specifically, the evaporation assembly 511 and the condensation assembly 512 can be moved into the receiving space in a sliding manner and can be limited by the bolt baffles at the ends. This design makes it easy to disassemble and install the evaporation assembly 511 and the condensation assembly 512.

[0048] The evaporation component 511 and the condensation component 512 are existing structures, and can generate hot air in conjunction with the compressor.

[0049] The first fan 52 is arranged between the air guide plates 514 on the left and right sides, and baffles are provided on the front and rear sides of the first fan 52 to form a hot air area in the area where the first fan 52 is located. The rear baffle of the first fan 52 is provided with a through hole to enable the hot air to be transported to the left frame 11. This design can prevent hot air leakage and ensure that the hot air can enter the left frame 11 better.

[0050] Furthermore, the air guide plate 514 is fixed in the right frame 12 by welding; Figure 7 As shown, the sizes of the air guide holes on the air guide plate 514 are different, and the hole diameter near the first fan 52 may be larger.

[0051] Furthermore, the hot air unit also includes a second heat exchange system 6 arranged above the first heat exchange system 5 , and the second heat exchange system 6 is used to transport the hot air between the first conveying device 2 and the second conveying device 3 .

[0052] The second heat exchange system 6 includes a second heat exchange component 61 and a second fan 62. The specific structure can be consistent with the first heat exchange system 5. When arranged, the second heat exchange system 6 is perpendicular to the first heat exchange system 5 and can efficiently obtain hot air. Through the joint action of the first heat exchange system 5 and the second heat exchange system 6, the heating and drying effect of the sludge on the first conveyor 2, the second conveyor 3 and the third conveyor 4 is guaranteed, and the efficiency of heating and drying the sludge is improved.

[0053] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A sludge drying device, characterized in that: include A frame body (1), the frame body (1) comprising a left frame (11) and a right frame (12) connected to each other, a feed port (13) being provided at one end of the top of the left frame (11) and a receiver (14) being provided at one end of the bottom; A conveying assembly is arranged on the left frame (11), the conveying assembly comprising a first conveying device (2) and a third conveying device (4) arranged in parallel, the first conveying device (2) being located above the third conveying device (4); the starting end of the first conveying device (2) is connected to the feed port (13), the end of the third conveying device (4) is connected to the receiver (14), and the material can be transported from the end of the first conveying device (2) to the starting end of the third conveying device (4); A plurality of hot air units are arranged on the right frame (12), and the hot air units are used to convey hot air to the bottom of the third conveying device (4).

2. The sludge drying device according to claim 1, characterized in that: The bottom and side surfaces of the left frame (11) are provided with baffles to form a cylindrical structure with an open top; A vent for conveying hot air is provided on a baffle plate on a side of the left frame (11) close to the right frame (12).

3. The sludge drying device according to claim 1, characterized in that: The conveying assembly further comprises a second conveying device (3) arranged between the first conveying device (2) and the third conveying device (4), wherein the second conveying device (3) is used to convey the material output by the first conveying device (2) to the third conveying device (4).

4. The sludge drying device according to claim 3, characterized in that: The first conveying device (2), the second conveying device (3) and the third conveying device (4) all comprise a wire mesh belt for conveying materials; The mesh number of the steel wire mesh belt is 12-60.

5. The sludge drying device according to claim 3, characterized in that: A guide plate (7) is provided between the end of the first conveying device (2) and the starting end of the second conveying device (3); A guide plate (7) is provided between the end of the second conveying device (3) and the third conveying device (4).

6. The sludge drying device according to claim 1, characterized in that: The hot air unit comprises a first heat exchange system (5), the first heat exchange system comprising two first heat exchange components (51) for generating hot air and a first fan (52) arranged between the two first heat exchange components (51) for conveying the hot air to the left frame (11).

7. The sludge drying device according to claim 6, characterized in that: The first heat exchange component (51) comprises an evaporation-condensation component connected to the right frame (12) and an air guide plate (514) arranged between the evaporation-condensation component and the first fan (52).

8. The sludge drying device according to claim 7, characterized in that: The evaporation and condensation assembly comprises an evaporation assembly (511), a condensation assembly (512) and an intermediate plate (513); the intermediate plate (513) is fixed to the right frame (12) and forms a receiving space with the right frame (12); The evaporation component (511) and the condensation component (512) are detachably connected in the accommodation space.

9. The sludge drying device according to claim 7, characterized in that: The wind deflector (514) is fixed inside the right frame (12); The air guide holes on the air guide plate (514) have different sizes.

10. The sludge drying device according to claim 6, characterized in that: The conveying assembly further comprises a second conveying device (3) arranged between the first conveying device (2) and the third conveying device (4), wherein the second conveying device (3) is used to convey the material output by the first conveying device (2) to the third conveying device (4); The hot air unit further comprises a second heat exchange system (6) arranged above the first heat exchange system (5), wherein the second heat exchange system (6) is used to transport the hot air between the first conveying device (2) and the second conveying device (3).

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