A heating device for sludge drying treatment

Abstract

This utility model relates to the technical field of sludge treatment, and in particular to a heating device for sludge drying treatment, including a treatment chamber, an inlet, an outlet, an air inlet pipe, a drying chamber, a drying assembly, and a blowing unit. The drying assembly includes heating tubes, a mounting plate, a connecting rod, and shock absorbers. The blowing unit of this sludge drying treatment heating device introduces hot air into the drying chamber through the air inlet pipe. After being heated by evenly distributed heating tubes, the hot air is then evenly blown onto the sludge in the treatment chamber by the blowing unit, thereby rapidly drying the sludge.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge treatment, and in particular to a heating device for sludge drying treatment. Background Technology

[0002] Sludge drying is an important treatment technology that reduces the volume and weight of sludge, facilitating subsequent transportation, disposal, or resource utilization. Most existing sludge drying technologies improve drying efficiency by increasing drying temperature and modifying heating devices.

[0003] The related technology, disclosed in CN108191198B, discloses a heating device for sludge drying, comprising a first housing, an air inlet duct, a heat recovery duct, a first baffle ring, a second housing, an air outlet duct, a second baffle ring, a primary filter screen, an air guide hood, a heating coil, a cover plate, a first filter screen cover, a second filter screen cover, and a sealing ring. By installing a primary filter screen at the inlet of the first housing and first and second filter screen covers on both sides of the air guide hood, dust can be effectively isolated, preventing dust accumulation on the heating coil and affecting the heating effect. The first and second baffle rings facilitate the clamping and fixing of the first filter screen cover, the folded edge, and the second filter screen cover on the air guide hood, and also facilitate disassembly, replacement, and maintenance of components.

[0004] Existing devices have shortcomings in fixing the heating coil, often failing to effectively reduce vibration transmission between the heating coil and the fan. This can cause the heating coil to loosen over long periods of operation, thus affecting its working accuracy and service life. Utility Model Content

[0005] This utility model solves the problems in related technologies and proposes a heating device for sludge drying treatment. The blowing unit introduces hot air into the drying chamber through the air inlet pipe. After the hot air is heated by the evenly distributed heating tubes, it is then evenly blown by the blowing unit onto the sludge in the treatment chamber, thereby achieving the characteristic of rapid sludge drying.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: a heating device for sludge drying treatment, comprising a treatment box for drying sludge, a feed inlet provided on the upper end face of the treatment box, a discharge outlet provided on the lower end face of the treatment box, an air inlet pipe provided on the upper end face of the treatment box, a drying box connected to the air inlet pipe, a drying component provided in the drying box, and a blowing unit provided on the other side of the drying box. The drying assembly includes heating tubes evenly arranged in parallel within the inner cavity of the drying chamber, a mounting plate disposed on the lower end face of each heating tube, a connecting rod for connecting adjacent mounting plates, and shock-absorbing components evenly arranged between the adjacent mounting plates.

[0007] By adopting the above technical solution, the processing chamber is used to hold the sludge to be dried; the inlet and outlet are used to fill the processing chamber with sludge and discharge the dried sludge, respectively; the air inlet duct can introduce hot air; the heating tubes inside the drying chamber are evenly distributed to heat the sludge uniformly, improving drying efficiency; the mounting plate and connecting rod fix and connect the heating tubes to ensure stable operation; the shock absorption components effectively reduce the noise and vibration generated during the operation of the fan and improve the working accuracy of the heating tubes. The blowing unit introduces hot air and blows it evenly onto the sludge to accelerate moisture evaporation.

[0008] As a preferred embodiment, the connecting rods are detachably connected to the mounting plate, and a buffer gasket is provided at the connection between the mounting plate and the heating tube.

[0009] By adopting the above technical solution, the mounting plate serves to fix and support the heating element, ensuring its stable performance during operation. The buffer gasket at the connection between the mounting plate and the heating element reduces stress concentration when the heating element expands due to heat, acting as a buffer and shock absorber to protect both the heating element and the mounting plate from damage. The connecting rod connects adjacent mounting plates, securing them in place. The heating element is mounted on the mounting plate and protected by the buffer gasket. When maintenance or replacement of aging or damaged heating elements is required, the connecting rod design allows for convenient and quick disassembly, reducing maintenance costs and improving work efficiency.

[0010] As a preferred embodiment, each of the heating tubes is arranged in a spiral shape, and each of the heating tubes is arranged at an angle.

[0011] By adopting the above technical solution, each heating element is arranged in a spiral shape, which increases the heating area of ​​the floor and ensures that heat is evenly distributed within the drying chamber. Simultaneously, the inclined arrangement of the heating elements creates effective shear force between the airflow entering the drying chamber and the heating elements, enhancing the contact between the airflow and the heating elements and improving heat exchange efficiency. In this way, hot air can be transferred more evenly and efficiently, effectively improving the drying effect.

[0012] As a preferred embodiment, each of the heating tubes is configured as an electric heating tube, and the wiring terminals of the heating tubes pass through the outside of the drying chamber and are connected to the power supply unit.

[0013] By adopting the above technical solution, an external power supply supplies power to each electric heating tube through the wiring terminals. The electric heating tube generates heat when current passes through it. Then, this heat is quickly and evenly transferred into the drying chamber, ultimately achieving the drying process.

[0014] As a preferred embodiment, the air supply unit includes a centrifugal fan, a filter element connected to the air inlet of the centrifugal fan, and a first air guide shroud connected to the air outlet of the centrifugal fan, wherein the filter element is configured as a multi-layer filter plate.

[0015] By employing the above technical solution, the centrifugal fan drives the airflow, drawing in external air, pressurizing it, and then blowing it out. The filter element has multiple layers of filter plates. This design effectively blocks external dust and impurities, preventing them from entering the centrifugal fan and thus avoiding damage to the fan. It also ensures that the hot air blown onto the sludge is clean. The first air guide shroud guides the air blown from the centrifugal fan outlet towards the sludge.

[0016] As a preferred embodiment, the other end of the first air guide hood is connected to the drying chamber, and the inner diameter of the first air guide hood increases sequentially in the direction away from the air outlet of the centrifugal fan.

[0017] By adopting the above technical solution, the design function of the first air guide shroud is to form an air guiding channel between the air outlet of the centrifugal fan and the drying chamber, and the gradually expanding inner diameter design ensures stable airflow transmission. The centrifugal fan provides power by generating high-speed airflow, and the first air guide shroud is responsible for smoothly introducing this airflow into the drying chamber.

[0018] As a preferred embodiment, the system further includes a second air guide hood disposed between the other side of the drying chamber and the air inlet duct, wherein the inner cavity of the second air guide hood decreases sequentially along the side furthest from the drying chamber.

[0019] By adopting the above technical solution, the second air guide hood is set between the other side of the drying chamber and the air inlet pipe. Its inner cavity gradually narrows from the air inlet pipe to the side away from the drying chamber. This design can effectively gather hot air and then efficiently transfer the hot air to the processing chamber for drying treatment of sludge.

[0020] Compared with the prior art, the beneficial effects of this utility model are: This utility model; The processing chamber is used to hold the sludge to be dried; the inlet and outlet are used to fill the processing chamber with sludge and discharge the dried sludge, respectively; the air inlet pipe can introduce hot air; the heating tubes inside the drying chamber are evenly distributed to heat the sludge evenly and improve the drying efficiency. The mounting plate and connecting rod fix and connect the heating tube, ensuring stable operation of the heating tube; the shock absorber effectively reduces the noise and vibration generated during the operation of the fan, and improves the working accuracy of the heating tube; The blowing unit accelerates moisture evaporation by introducing hot air and blowing it evenly onto the sludge. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a heating device for sludge drying treatment according to this utility model; Figure 2 This utility model relates to a heating device for sludge drying treatment. Figure 1 Another structural diagram from a different perspective; Figure 3 This is a schematic diagram of the drying component in a heating device for sludge drying treatment according to this utility model; Figure 4 This utility model relates to a heating device for sludge drying treatment. Figure 3 A top view structural diagram; In the picture: 100-Processing chamber, 101-Inlet, 102-Outlet, 2-Drying chamber, 21-First air guide hood, 22-Second air guide hood, 221-Air inlet duct, 3-Centrifugal fan, 31-Filter element, 4-Heating tube, 5-Mounting plate, 51-Connecting rod, 52-Shock absorber. Detailed Implementation

[0022] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0026] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0028] like Figures 1 to 4 As shown, a heating device for sludge drying treatment includes a treatment box 100 for drying sludge, a feed inlet 101 provided on the upper end face of the treatment box 100, a discharge outlet 102 provided on the lower end face of the treatment box 100, an air inlet pipe 221 provided on the upper end face of the treatment box 100, a drying box 2 connected to the air inlet pipe 221, a drying component provided in the drying box 2, and a blowing unit provided on the other side of the drying box 2. Please refer to details. Figure 1 , Figure 2 , Figure 3 and Figure 4 The drying assembly includes heating tubes 4 evenly arranged in parallel within the drying chamber 2, mounting plates 5 disposed on the lower end face of each heating tube 4, connecting rods 51 for connecting adjacent mounting plates 5, and shock absorbers 52 evenly arranged between adjacent mounting plates 5. The processing chamber 100 is used to hold the sludge to be dried. The inlet 101 and outlet 102 are used to fill the processing chamber 100 with sludge and discharge the dried sludge, respectively. The air inlet duct 221 can introduce hot air. The evenly distributed heating tubes 4 inside the drying chamber 2 can uniformly heat the sludge, improving drying efficiency. The mounting plates 5 and connecting rods 51 fix and connect the heating tubes 4, ensuring stable operation. The shock absorbers 52 effectively reduce noise and vibration generated during fan operation, improving the working accuracy of the heating tubes 4. The blowing unit introduces hot air and blows it evenly onto the sludge, accelerating moisture evaporation. The overall working principle is as follows: the blowing unit introduces hot air into the drying chamber 2 through the air inlet pipe 221. After the hot air is heated by the evenly distributed heating pipes 4, it is then evenly blown by the blowing unit onto the sludge in the processing chamber 100, thereby rapidly drying the sludge.

[0029] Please refer to details. Figure 2 , Figure 3 and Figure 4 The connecting rods 51 are detachably connected to the mounting plates 5, and buffer washers are provided at the connection points between the mounting plates 5 and the heating tube 4. The mounting plates 5 serve to fix and support the heating tube 4, ensuring its stable performance during operation. The buffer washers at the connection points between the mounting plates 5 and the heating tube 4 reduce stress concentration when the heating tube 4 expands due to heat, thus buffering and shock absorption and protecting the heating tube 4 and the mounting plates 5 from damage. The connecting rods 51 connect adjacent mounting plates 5, fixing them in place. The heating tube 4 is mounted on the mounting plates 5 and protected by the buffer washers. When maintenance or replacement of aging or damaged heating tubes 4 is required, the design of the connecting rods 51 allows for convenient and quick disassembly of the heating tube 4, reducing maintenance costs and improving work efficiency.

[0030] Please refer to details. Figure 1 , Figure 3 and Figure 4 Each heating element 4 is arranged in a spiral shape and tilted, which increases the heating area and ensures that heat is evenly distributed within the drying chamber 2. Simultaneously, the tilted arrangement of the heating elements creates effective shear force between the airflow entering the drying chamber 2 and the heating elements, enhancing the contact and heat exchange efficiency. This allows for more even and efficient heat transfer, effectively improving the drying effect. In essence, the spiral heating elements 4 increase the heat exchange area, while the tilted arrangement further promotes efficient heat transfer through the shear force between the airflow and the heating elements, together achieving a highly efficient drying effect.

[0031] Please refer to details. Figure 3 and Figure 4 Each heating tube 4 is set as an electric heating tube 4, and the wiring terminals of the heating tube 4 pass through the drying chamber 2 and are connected to the power supply unit. First, the external power supply supplies power to each electric heating tube 4 through the wiring terminals. The electric heating tube 4 generates heat when current passes through it. Then, this heat is quickly and evenly transferred to the drying chamber 2, and finally the drying process is achieved.

[0032] Please refer to details. Figure 1 , Figure 3 and Figure 4 The air supply unit includes a centrifugal fan 3, a filter element 31 connected to the air inlet of the centrifugal fan 3, and a first air guide hood 21 connected to the air outlet of the centrifugal fan 3. The filter element 31 is configured as a multi-layer filter plate. The centrifugal fan 3 is responsible for driving the airflow, drawing in external air, pressurizing it, and then blowing it out. The filter element 31 has a multi-layer filter plate, which can effectively block external dust, impurities, etc., preventing them from entering the centrifugal fan 3 and thus avoiding damage to the fan, while ensuring that the hot air blown onto the sludge is clean. The first air guide hood 21 is used to guide the air blown from the air outlet of the centrifugal fan 3 to the sludge. The working principle is that the dusty external air first passes through the multi-layer filter plate to remove impurities and dust, then is drawn in and pressurized by the centrifugal fan 3, and finally delivered to the drying chamber 2 through the first air guide hood 21, thereby achieving efficient cleaning and drying of the sludge.

[0033] Please refer to details. Figure 1 and Figure 2The other end of the first air guide hood 21 is connected to the drying chamber 2. The inner diameter of the first air guide hood 21 increases progressively in the direction away from the air outlet of the centrifugal fan 3. The design function of the first air guide hood 21 is to form an air guiding channel between the air outlet of the centrifugal fan 3 and the drying chamber 2. The gradually expanding inner diameter design ensures stable airflow transmission. The centrifugal fan 3 provides power by generating high-speed airflow, and the first air guide hood 21 is responsible for smoothly introducing this airflow into the drying chamber 2. In terms of working principle, the high-speed airflow generated by the centrifugal fan 3 first passes through the gradually expanding inner diameter area of ​​the first air guide hood 21. This helps to reduce pressure fluctuations caused by sudden drops in air velocity, ensuring smooth and stable airflow transmission into the drying chamber 2. This not only improves the efficiency of hot air delivery but also ensures that the hot air is evenly distributed within the drying chamber 2, thereby effectively improving the drying effect and efficiency.

[0034] Please refer to details. Figure 1 and Figure 2 It also includes a second air guide hood 22 disposed between the drying chamber 2 and the air inlet duct 221 on the other side. The inner cavity of the second air guide hood 22 gradually decreases in size from the side away from the drying chamber 2. This design effectively concentrates hot air and efficiently transfers it to the processing chamber 100 for drying the sludge. The working principle is as follows: First, the high-speed airflow generated by the centrifugal fan 3 passes through the gradually expanding inner diameter area of ​​the first air guide hood 21. This helps to reduce pressure fluctuations caused by sudden drops in air velocity, ensuring smooth and stable airflow into the drying chamber 2. This hot air passes through the drying chamber 2 and then enters the second air guide hood 22. As the inner cavity of the second air guide hood 22 gradually narrows, the hot air is concentrated in the process, forming a strong hot air flow, which is eventually transmitted into the treatment chamber 100 to effectively dry the sludge.

[0035] In this embodiment, the inlet 101 and outlet 102 are used to fill the processing chamber 100 with sludge and discharge the dried sludge, respectively; the air inlet duct 221 can introduce hot air; the heating pipes 4 inside the drying chamber 2 are evenly distributed to uniformly heat the sludge, improving drying efficiency. The high-speed airflow generated by the centrifugal fan 3 first passes through the gradually expanding inner diameter area of ​​the first air guide hood 21, which helps to reduce pressure fluctuations caused by sudden drops in wind speed, ensuring smooth and stable airflow to the inside of the drying chamber 2. This hot air passes through the drying chamber 2 and then enters the second air guide hood 22. Due to the gradual narrowing of the inner cavity of the second air guide hood 22, the hot air is concentrated in this process, forming a strong hot airflow, which is finally delivered to the processing chamber 100 for effective drying of the sludge.

[0036] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. A heating device for sludge drying treatment, characterized by: It includes a treatment box (100) for drying sludge, a feed inlet (101) on the upper end face of the treatment box (100), a discharge port (102) on the lower end face of the treatment box (100), an air inlet pipe (221) on the upper end face of the treatment box (100), a drying box (2) connected to the air inlet pipe (221), a drying assembly in the drying box (2), and a blowing unit on the other side of the drying box (2); The drying assembly includes heating tubes (4) evenly arranged in parallel within the drying chamber (2), mounting plates (5) disposed on the lower end face of each heating tube (4), connecting rods (51) for connecting adjacent mounting plates (5), and shock absorbers (52) evenly arranged between adjacent mounting plates (5).

2. The heating device for sludge drying treatment according to claim 1, characterized by: The connecting rod (51) is detachably connected to the mounting plate (5), and a buffer gasket is provided at the connection between the mounting plate (5) and the heating tube (4).

3. The heating device for sludge drying treatment according to claim 2, characterized by: Each of the heating tubes (4) is arranged in a spiral shape, and each of the heating tubes (4) is arranged at an angle.

4. The heating device for sludge drying treatment according to claim 3, characterized by: Each of the heating tubes (4) is configured as an electric heating tube (4), and the wiring terminals of the heating tubes (4) pass through the drying chamber (2) and are connected to the power supply unit.

5. The heating device for sludge drying treatment according to claim 4, characterized in that: The air supply unit includes a centrifugal fan (3), a filter (31) connected to the air inlet of the centrifugal fan (3), and a first air guide shroud (21) connected to the air outlet of the centrifugal fan (3).

6. The heating device for sludge drying treatment according to claim 5, characterized in that: The other end of the first air guide hood (21) is connected to the drying box (2), and the inner diameter of the first air guide hood (21) increases sequentially in the direction away from the air outlet of the centrifugal fan (3).

7. The heating device for sludge drying treatment according to claim 6, characterized in that: It also includes a second air guide hood (22) disposed between the other side of the drying chamber (2) and the air inlet pipe (221), wherein the inner cavity of the second air guide hood (22) decreases sequentially on the side away from the drying chamber (2).

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