CN201952336U - Spouted-bed sludge drying device with adjustable throttling ring - Google Patents

Abstract

The utility model relates to a spouted bed sludge drying device with an adjustable throttling ring. The device includes a drier body (1), and an adjustable throttling ring (6) is arranged on the upper part of the drier body (1). And the pull rod assembly (7) connected to the adjustable throttle ring (6) for adjusting the opening of the adjustable throttle ring (6), and the upper part of the dryer body (1) is also provided with a The mud and heat medium are discharged from the outlet (8) of the dryer body (1), and the middle part of the dryer body (1) is provided with a wet sludge inlet (2) for inputting wet sludge into the dryer body (1). The device and method are suitable for sludge drying, continuous operation, low labor intensity, high production efficiency, low heat dissipation, and easy adjustment of particle size and moisture content of dried products.

Description

Spouted bed sludge drying unit with adjustable throttle ring

technical field

The utility model relates to a drying device for sludge disposal, which belongs to the technical field of drying equipment manufacturing.

Background technique

Sludge is the product of sewage treatment. Due to its high water content, complex composition, and more organic matter, it has a certain viscosity. At present, the disposal methods of sludge are mainly landfill and composting. Landfill disposal method will occupy a large amount of land resources and easily cause secondary pollution. According to the methods of sterilization and aging, compost has different fertilizer efficiency and safety. This disposal method can achieve the purpose of recycling, but the processing process is longer, and it will also occupy a large amount of land resources, and the disposal cost is also high; in addition, Sludge containing harmful components such as heavy metals should not be disposed of in this way.

After drying, the sludge can be greatly reduced, harmless and resourceful. The dried sludge can be used as raw materials for building materials, fuel, etc. At present, there are various types of drying devices, but due to the viscosity of sludge itself and its inherent characteristics, there are not many drying devices that can be directly applied to sludge drying. For this reason, the present invention studies a kind of sludge drying device and its method.

Contents of the invention

Technical problem: The technical problem to be solved by this utility model is to provide a drying device suitable for sludge drying, continuous operation, low labor intensity, high production efficiency, low heat dissipation, and easy adjustment of the particle size and moisture content of the dried product .

Technical solution: In order to solve the above technical problems, the spouted bed sludge drying device with adjustable choke ring provided by the utility model includes a dryer body, and the upper part of the dryer body is provided with an adjustable choke ring and the adjustable choke ring. The tie rod assembly connected with the adjustable throttle ring is used to adjust the opening of the adjustable throttle ring. The upper part of the dryer body is also equipped with an outlet for discharging the dried sludge and heat medium out of the dryer body. The middle part of the dryer body is set There is a wet sludge inlet for inputting wet sludge into the dryer body, a stirring device installed inside the dryer body and located at its lower part, and the lower part of the dryer body is also provided with a heat medium inlet for inputting heat medium into the dryer body , a speed-regulating motor connected to the stirring device.

The adjustable throttling ring and the pull rod assembly constitute an adjustable throttling device, under the control of the adjustable throttling device, the diameter of the airflow channel of the dryer body is changed, thereby adjusting the resistance characteristics of the air flow field in the dryer body, Thereby changing the trajectory and residence time of the sludge particles in the dryer body.

Beneficial effect:

1. The main body of the dryer and the inlet of the heat medium at the lower part of the dryer are tangential air inlets. The resulting swirl movement reduces the possibility of wet sludge sticking to the wall and prolongs the residence time of the heat medium in the dryer.

2. Stirring device, the stirring device at the lower part of the dryer can play a crushing role, so that the wet sludge cannot be aggregated, thus strengthening the heat and mass transfer process. At the same time, the stirring device has a cleaning effect on the inner wall of the dryer, preventing the sludge from sticking The possibility of the wall enables the drying process to be carried out continuously and stably.

3. The adjustable throttling device can adjust the resistance characteristics of the air flow field in the drying chamber when the initial physical parameters such as wet sludge and drying medium change, so as to effectively and stably control the operating parameters.

Description of drawings

Fig. 1 is a schematic diagram of a spouted bed sludge dryer with an adjustable throttling ring provided by the utility model.

Among them, 1 dryer body; 2 wet sludge inlet; 3 stirring device; 4 heat medium inlet; 5 speed regulating motor; 6 throttling ring;

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 1, the spouted bed sludge drying device with an adjustable throttling ring provided by the utility model includes a drier body 1, and an adjustable throttling ring 6 and a The adjustable throttle ring 6 is connected to the tie rod assembly 7 used to adjust the opening of the adjustable throttle ring 6. The upper part of the dryer body 1 is also provided with an outlet for discharging the dried sludge and heat medium out of the dryer body 1. 8.

The middle part of the dryer body 1 is provided with a wet sludge inlet 2 for inputting wet sludge into the dryer body 1 .

The stirring device 3 installed inside the dryer body 1 and located at its lower part, the lower part of the dryer body is also provided with a heat medium inlet 4 for inputting heat medium into the dryer body 1, and a speed-regulating motor 5 connected with the stirring device 3 .

The utility model provides a spouted bed sludge drying method with an adjustable throttling ring. The method includes the following steps:

The wet sludge is sent into the dryer body 1 from the wet sludge inlet 2, and the heat medium enters the dryer body 1 from the heat medium inlet 4. With sufficient contact inside, most of the water in the wet sludge quickly evaporates into dry sludge, and together with the cooled heat medium, it is discharged from the heat medium outlet 8 to the dryer body 1.

The adjustable throttling ring 6 and the tie rod assembly 7 constitute an adjustable throttling device, under the control of the adjustable throttling device, the diameter of the airflow channel of the dryer body 1 is changed, thereby adjusting the air flow field in the dryer body 1 The resistance characteristics, thereby changing the running track and residence time of the sludge particles in the dryer body 1.

Sometimes, due to the physical parameters of wet sludge such as bulk density, moisture content, etc., and drying medium parameters such as inlet temperature, etc. will change during operation, the drying process of wet sludge in the dryer body will change accordingly or even become ineffective. Stable, typical performance is that the particle size and moisture content of the dried product fluctuate frequently or even fail to meet the process design requirements, and may further cause blockage of subsequent process links so that the system is difficult to operate. The adjustable throttling device can adjust the resistance characteristics of the airflow field in the drying chamber by changing the throat diameter of the airflow channel in the drying chamber, thereby changing the running track and residence time of the sludge particles in the drying chamber, and finally effectively and stably controlling the operating parameters. .

Claims (1)

1. spouted bed sludge drying mechanism with adjustable restrictor ring, it is characterized in that: this device comprises drying machine body (1), the inner top of drying machine body (1) is provided with adjustable restrictor ring (6) and the rod assembly (7) that is used to regulate adjustable restrictor ring (6) aperture that is connected with this adjustable restrictor ring (6), drying machine body (1) top also is provided with the outlet (8) that is used for dried dewatered sludge and thermal medium discharge drying machine body (1), drying machine body (1) middle part is provided with the wet mud inlet (2) that is used for the wet mud of input in drying machine body (1), it is inner and be positioned at the whipping appts (3) of its underpart to be installed in drying machine body (1), drying machine body bottom also is provided with the thermal medium import (4) of input thermal medium in drying machine body (1), the buncher (5) that is connected with whipping appts (3).

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