Low-temperature closed-loop sludge drying device

Abstract

The utility model discloses a low-temperature closed-loop sludge drying device which comprises a shell, a cavity is formed in the shell, a plurality of exhaust cavities are formed in the left inner wall and the right inner wall of the cavity respectively, filter screens are arranged at the ends, close to the cavity, of the exhaust cavities respectively, an air heater is installed at the upper end of the shell, and an air outlet is formed in the lower end of the shell. And a heating mechanism for low-temperature closed-loop sludge is arranged in the shell. According to the sludge drying device, after the motor is started, the rotating pipe rotates through transmission of the synchronous transmission belt, then the communicating pipes stir sludge, meanwhile, after the air heater is started, hot air is blown into the shell through the air outlet pipe and the communicating pipes, and it is ensured that the sludge can be evenly heated in the drying process.

Description

Technical Field

[0001] The present application relates to the technical field of sludge drying, and in particular to a low-temperature closed-loop sludge drying device. Background Art

[0002] The sludge produced by urban sewage treatment plants in my country is difficult to be used as a resource due to its high water content, high viscosity, bacteria, pathogens, etc. After proper drying, it can be used for subsequent treatment such as composting or incineration, which can achieve sludge reduction and save sludge disposal and transportation costs. Sludge drying removes most of the water content from the sludge through infiltration or evaporation to achieve the purpose of drying;

[0003] With respect to the above-mentioned related technologies, the inventors believe that in the prior art, common sludge drying devices mostly adopt a high-temperature rapid drying method. Although this method can quickly reduce the moisture content of the sludge, it has the problems of high energy consumption, easy to generate secondary pollution, and serious equipment wear. In addition, during the heating process of the existing sludge drying device, due to uneven heating, the sludge drying effect is often unsatisfactory, part of the sludge is too dry, and part of the sludge still contains more water, which not only affects the quality of the dried sludge, but also reduces the drying efficiency;

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem in the prior art that common sludge drying devices mostly adopt high-temperature rapid drying methods, although this method can quickly reduce the moisture content of the sludge, it has the problems of high energy consumption, easy to produce secondary pollution, severe equipment wear, etc. In addition, during the heating process of the existing sludge drying device, due to uneven heating, the sludge drying effect is often not ideal, part of the sludge is too dry, and part of the sludge still contains more water, which not only affects the quality of the dried sludge, but also reduces the drying efficiency. The present application provides a low-temperature closed-loop sludge drying device.

[0006] The low-temperature closed-loop sludge drying device provided in this application adopts the following technical solution:

[0007] A low-temperature closed-loop sludge drying device comprises a shell, a cavity is arranged in the shell, a plurality of exhaust cavities are opened on the left and right inner walls of the cavity, a filter screen is arranged at one end of the plurality of exhaust cavities close to the cavity, a hot air blower is installed at the upper end of the shell, and a heating mechanism for low-temperature closed-loop sludge is arranged in the shell.

[0008] Preferably, the heating mechanism includes a rotating tube rotatably connected between the upper and lower inner walls of the shell, a plurality of connecting tubes are fixedly connected to the rotating tube at equal intervals, the plurality of connecting tubes are all connected to the interior of the rotating tube, a filter is provided on the plurality of connecting tubes, a mounting plate is fixedly connected to the upper end of the shell, and a motor is installed on the front side of the mounting plate.

[0009] Preferably, the upper end of the rotating tube extends to the upper end of the shell, and the output shaft of the motor and the upper end of the rotating tube are both equipped with synchronous transmission wheels, and the two synchronous transmission wheels are connected by a synchronous transmission belt.

[0010] Preferably, the air outlet end of the hot air blower is connected to an air outlet pipe, the other end of the air outlet pipe is connected to the upper end of the rotating pipe through a rotating joint, the air outlet pipe is connected to a branch pipe, both ends of the branch pipe extend to both sides of the shell, and are connected to multiple exhaust chambers through multiple air inlet pipes.

[0011] Preferably, a feed port is provided at the upper end of the shell, a discharge port is provided at the lower end of the shell, a filter plate is provided at the inner bottom of the shell, and a plurality of bottom columns are symmetrically fixedly connected to the lower end of the shell.

[0012] Preferably, a control switch is installed on the front side of the shell, and the motor and the hot air blower are both connected to the control switch signal.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. After the motor is started, the synchronous transmission belt will drive the rotating pipe to rotate, so that the multiple connecting pipes can stir the sludge. At the same time, after the hot air blower is started, it will blow hot air into the shell through the air outlet pipe and multiple connecting pipes to ensure that the sludge can be evenly heated during the drying process;

[0015] 2. After the hot air blower is started, it will blow hot air continuously into multiple exhaust chambers through the outlet pipe and branch pipes, and then through multiple air inlet pipes, further accelerating the separation of water in the sludge and improving the quality and efficiency of sludge drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0017] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the application;

[0018] Figure 3 It is an application example Figure 2 Enlarged view of point A.

[0019] Explanation of the accompanying reference numerals: 1. Shell; 2. Control switch; 3. Hot air blower; 4. Feed inlet; 5. Motor; 6. Branch pipe; 7. Air inlet pipe; 8. Synchronous transmission belt; 9. Rotating pipe; 10. Connecting pipe; 11. Exhaust cavity; 12. Bottom column; 13. Cavity; 14. Air outlet pipe. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-3 This application is described in further detail.

[0021] The present application discloses a low-temperature closed-loop sludge drying device. Figure 1-2 A low-temperature closed-loop sludge drying device includes a shell 1, heating wires are arranged on the left and right inner walls of the shell 1, a cavity 13 is arranged in the shell 1, a plurality of exhaust cavities 11 are opened on the left and right inner walls of the cavity 13, and a filter screen is arranged at one end of the plurality of exhaust cavities 11 close to the cavity 13, a hot air blower 3 is installed at the upper end of the shell 1, and a heating mechanism for low-temperature closed-loop sludge is arranged in the shell 1.

[0022] After the hot air blower 3 is started, it will continuously blow hot air into multiple exhaust chambers 11 through the air outlet pipe 14 and the branch pipe 6, and then through multiple air inlet pipes 7, further accelerating the separation of water in the sludge and improving the quality and efficiency of sludge drying.

[0023] Reference Figure 2-3 The heating mechanism includes a rotating tube 9 rotatably connected between the upper and lower inner walls of the shell 1, and a plurality of connecting tubes 10 are fixedly connected to the rotating tube 9 at equal intervals. The plurality of connecting tubes 10 are all connected to the interior of the rotating tube 9, and a filter screen is arranged on the plurality of connecting tubes 10. A mounting plate is fixedly connected to the upper end of the shell 1, and a motor 5 is installed on the front side of the mounting plate. The upper end of the rotating tube 9 extends to the upper end of the shell 1, and a synchronous transmission wheel is installed on the output shaft of the motor 5 and the upper end of the rotating tube 9. The two synchronous transmission wheels are connected by a synchronous transmission belt 8. The air outlet end of the hot air blower 3 is connected to an air outlet pipe 14, and the other end of the air outlet pipe 14 is connected to the upper end of the rotating tube 9 through a rotating joint. The air outlet pipe 14 is connected to a branch pipe 6, and both ends of the branch pipe 6 extend to both sides of the shell 1, and are connected to multiple exhaust chambers 11 through multiple air inlet pipes 7.

[0024] After the motor 5 is started, the rotating pipe 9 will rotate through the transmission of the synchronous transmission belt 8, so that the multiple connecting pipes 10 can stir the sludge. At the same time, after the hot air blower 3 is started, hot air will be blown into the interior of the shell 1 through the air outlet pipe 14 and the multiple connecting pipes 10 to ensure that the sludge can be evenly heated during the drying process.

[0025] Reference Figure 1A feed port 4 is provided at the upper end of the shell 1, a discharge port is provided at the lower end of the shell 1, a filter plate is provided at the inner bottom of the shell 1, a plurality of bottom columns 12 are symmetrically fixedly connected to the lower end of the shell 1, a control switch 2 is installed on the front side of the shell 1, and the motor 5 and the hot air blower 3 are both connected to the control switch 2 signal.

[0026] The implementation principle of a low-temperature closed-loop sludge drying device in the embodiment of the present application is as follows: when in use, the sludge is poured into the housing 1 from the feed port 4, and then the motor 5 and the hot air blower 3 are started by the control switch 2. The model of the motor 5 can be selected as YE2-6344-37KW;

[0027] After the motor 5 is started, the synchronous transmission belt 8 drives the rotating tube 9 to rotate, thereby causing the multiple connecting tubes 10 to stir the sludge. At the same time, after the hot air blower 3 is started, hot air is blown to the inside of the shell 1 through the air outlet pipe 14 and the multiple connecting tubes 10 to ensure that the sludge can be evenly heated during the drying process.

[0028] At the same time, after the hot air blower 3 is started, it will continuously blow hot air into multiple exhaust chambers 11 through the air outlet pipe 14 and the branch pipe 6, and then through multiple air inlet pipes 7, further accelerating the separation of water in the sludge and improving the quality and efficiency of sludge drying.

[0029] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0030] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0032] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A low-temperature closed-loop sludge drying device, comprising a housing (1), characterized in that: A cavity (13) is provided in the shell (1), a plurality of exhaust cavities (11) are provided on the left and right inner walls of the cavity (13), a filter screen is provided at one end of the plurality of exhaust cavities (11) close to the cavity (13), a hot air blower (3) is installed at the upper end of the shell (1), and a heating mechanism for low-temperature closed-loop sludge is provided in the shell (1).

2. A low-temperature closed-loop sludge drying device according to claim 1, characterized in that: The heating mechanism comprises a rotating tube (9) rotatably connected between the upper and lower inner walls of the shell (1), a plurality of connecting tubes (10) are fixedly connected to the rotating tube (9) at equal intervals, the plurality of connecting tubes (10) are all connected to the interior of the rotating tube (9), and a filter screen is provided on the plurality of connecting tubes (10), and a mounting plate is fixedly connected to the upper end of the shell (1), and a motor (5) is installed on the front side of the mounting plate.

3. A low-temperature closed-loop sludge drying device according to claim 2, characterized in that: The upper end of the rotating tube (9) extends to the upper end of the housing (1), and the output shaft of the motor (5) and the upper end of the rotating tube (9) are both equipped with synchronous transmission wheels, and the two synchronous transmission wheels are connected by a synchronous transmission belt (8).

4. A low-temperature closed-loop sludge drying device according to claim 3, characterized in that: The air outlet end of the hot air blower (3) is connected to an air outlet pipe (14), the other end of the air outlet pipe (14) is connected to the upper end of the rotating pipe (9) through a rotating joint, and the air outlet pipe (14) is connected to a branch pipe (6), the two ends of the branch pipe (6) extend to both sides of the shell (1), and are connected to multiple exhaust chambers (11) through multiple air inlet pipes (7).

5. A low-temperature closed-loop sludge drying device according to claim 4, characterized in that: The upper end of the shell (1) is provided with a feed port (4), the lower end of the shell (1) is provided with a discharge port, the inner bottom of the shell (1) is provided with a filter plate, and the lower end of the shell (1) is symmetrically fixedly connected with a plurality of bottom columns (12).

6. A low-temperature closed-loop sludge drying device according to claim 5, characterized in that: A control switch (2) is installed on the front side of the housing (1), and the motor (5) and the hot air blower (3) are both connected to the control switch (2) by signal.

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