Sludge working tank capable of controlling sludge amount

Abstract

The utility model discloses a sludge working tank capable of controlling sludge quantity, which comprises a driving motor, a sludge stirring mechanism and a sludge quantity control mechanism, the driving motor is arranged on the working tank body, the driving motor is connected with the sludge stirring mechanism, the sludge stirring mechanism extends into the working tank body, a sludge inlet pipe is arranged on the working tank body, and the sludge quantity control mechanism is arranged on the sludge inlet pipe. A sludge outlet is formed in the bottom of the working tank body; the sludge stirring mechanism comprises a rotating rod and stirring blades, the rotating rod is connected with the driving motor and extends into the working tank body, and 2-3 groups of stirring blades are arranged on the rotating rod in the working tank body; the sludge quantity control mechanism comprises a PLC (Programmable Logic Controller) and a torque sensor, the torque sensor is in communication connection with the PLC, and the torque sensor is arranged on the rotating rod outside the working tank body. The sludge quantity in the working tank body is judged by detecting the torque of the stirring blades through the torque sensor, and the sludge inlet quantity of the sludge inlet pipe is adjusted through the PLC to control the sludge quantity in the working tank body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sludge treatment technical field, especially relate to a controllable sludge amount's sludge working tank. BACKGROUND

[0002] Sludge high temperature hydrolysis and hydrothermal carbonization process is an efficient sludge pretreatment technology. The sludge high temperature hydrolysis pretreatment process and the hydrothermal carbonization process are based on high solid content dewatered sludge (solid content 10% to 20%) as the object, the dewatered sludge is forced to change the molecular structure by high temperature, high pressure and pressure instantaneous release, so that the extracellular polymer and macromolecular organic matter in the sludge are hydrolyzed, and the cell wall of microorganism in the sludge is broken, the biodegradability of the material is strengthened, and the fluidity of the material is improved.

[0003] In the existing sludge high temperature hydrolysis pretreatment process and hydrothermal carbonization process, the sludge enters the sludge working tank through the sludge pipeline to carry out the reaction. In order to ensure the working efficiency of the sludge working tank, it is best to increase the sludge entering amount of the sludge pipeline when the sludge in the sludge working tank is less, and to reduce the sludge entering amount of the sludge pipeline when the sludge in the sludge working tank is more. In order to know the sludge amount in the sludge working tank, people install pressure difference liquid level meters and other measurement sensors in the sludge working tank, but in actual use, the internal liquid level meter is not only easy to be damaged, but also the ordinary signal transmission will be damaged, the signal transmission is slow, the plastic bag or other foreign matters in the sludge interfere, and the signal transmission is inaccurate. Therefore, it is a problem to be solved to design a device for controlling the sludge amount in the sludge working tank outside the sludge working tank body.

[0004] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be construed as admitting that this information constitutes prior art with respect to any patentable matter disclosed in the utility model. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a sludge working tank with controllable sludge amount, so as to overcome the defects in the prior art.

[0006] In order to achieve the above object, the utility model provides a controllable sludge amount's sludge working tank, including drive motor, sludge stirring mechanism, sludge amount control mechanism, drive motor sets up on the working tank body, drive motor with sludge stirring mechanism is connected, sludge stirring mechanism extends to the working tank body, and the working tank body is provided with the sludge inlet pipe, and the working tank body bottom is provided with the sludge outlet, sludge stirring mechanism includes rotating rod, stirring vane, and rotating rod is connected with drive motor, and rotating rod extends to the working tank body, and the rotating rod in the working tank body is provided with 2-3 groups of stirring vane, sludge amount control mechanism includes PLC controller, torque sensor, torque sensor is connected with PLC controller communication, and torque sensor sets up on the rotating rod located in the working tank body outside, and the torque of stirring vane is detected through torque sensor.

[0007] Preferably, in the technical scheme, the angle between the sludge inlet pipe and the vertical direction is 45 degrees.

[0008] Preferably, in the technical scheme, the working tank body is provided with a steam pipeline, the steam pipeline is located at the lower part of the working tank body, and the steam pipeline is connected with an external steam equipment.

[0009] Preferably, in the technical scheme, the stirring vane includes a vane unit, the vane unit is symmetrically arranged around the rotating rod, and the two vane units are staggered.

[0010] Preferably, in the technical scheme, the PLC controller is a Siemens S7-200 SMART type PLC controller.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] The torque of the stirring vane is directly detected on the rotating rod by the torque sensor located outside the working tank body, the PLC controller can quickly determine the content of the sludge in the working tank body, and then the sludge inlet amount of the sludge inlet pipe is changed, so that the sludge in the working tank body maintains a proper amount, and the working efficiency of the sludge working tank is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 The utility model discloses a controllable sludge amount's sludge working tank structure schematic diagram;

[0014] Fig. 2 The utility model discloses a controllable sludge amount's sludge working tank plan view. DETAILED DESCRIPTION

[0015] The specific embodiment of the utility model is described in detail below, but it should be understood that the protection scope of the utility model is not limited by the specific embodiment.

[0016] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0017] like Figs. 1-2 As shown, a sludge working tank with controllable sludge volume includes a drive motor 2, a sludge stirring mechanism, and a sludge volume control mechanism. The drive motor 2 is mounted on the working tank body 1 and is connected to the sludge stirring mechanism, which extends into the working tank body 1. The working tank body 1 is provided with a sludge inlet pipe 3, which forms an angle of 45° with the vertical direction. The bottom of the working tank body 1 is provided with a sludge outlet 4, and a steam pipe 5 is provided on the working tank body 1. The steam pipe 5 is located at the lower part of the working tank body 1 and is connected to an external steam device.

[0018] The sludge mixing mechanism includes a rotating rod 6 and mixing blades 7. The rotating rod 6 is connected to the drive motor 2 and extends into the working tank 1. Two to three sets of mixing blades 7 are provided on the rotating rod in the working tank 1. The mixing blades 7 include blade units 8. The blade units are symmetrically arranged with the rotating rod 6 as the center, and the blade units 8 on both sides are staggered.

[0019] The sludge quantity control mechanism includes a PLC controller and a torque sensor 9. The torque sensor 9 is communicatively connected to the PLC controller and is mounted on a rotating rod 6 located outside the working tank 1. The PLC controller is a Siemens S7-200 SMART type PLC controller, and the torque sensor 9 is a JN-DN3 dynamic torque sensor.

[0020] During operation, sludge enters the working tank 1 through the sludge inlet pipe 3. The drive motor 2 starts, causing the rotating rod 6 to rotate, which in turn drives the stirring blades 7 to agitate the sludge. The blade units 8, arranged in different directions, ensure thorough agitation of the sludge within the working tank 1. Simultaneously, high-temperature steam enters the working tank 1 through the steam pipe 5 to mix and react with the sludge. The torque sensor 9 monitors the torque of the stirring blades 7 in real time. When the amount of sludge in the working tank 1 is low, often only one set of stirring blades 7 receives force from the sludge, with the upper stirring blades 7 idling. The torque sensor 9 detects a low torque from the stirring blades 7, and the PLC controller, through manual intervention, increases the amount of sludge entering the sludge inlet pipe 3 based on the detection results. When the amount of sludge in the working tank 1 is high, 2-3 sets of stirring blades 7 receive force from the sludge, and the torque sensor 9 detects a high torque from the stirring blades 7. In this case, the PLC controller, through manual intervention, reduces the amount of sludge entering the sludge inlet pipe 3 based on the detection results. This maintains a suitable amount of sludge in the working tank 1, ensuring the efficient operation of the sludge working tank.

[0021] After the device has been operated for a certain time, the torque data average interval value of the stirring blade 7 can be obtained for a type of sludge, and the power data average interval value of the sludge input pump device corresponding to the torque data average interval value can also be obtained. The middle value of the torque data average interval value is taken to obtain the middle value of the power data of the sludge input pump device corresponding thereto. By setting the power of the sludge input pump device as the middle value of the power data, the general sludge input amount of the type of sludge is obtained. The general sludge input amount of each type of sludge can be obtained through the same process.

[0022] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The exemplary embodiments were chosen and described in order to explain the principles of the present application and its practical application and to allow others skilled in the art to understand the present application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. The scope of the present application is intended to be defined by the claims and their equivalents.

Claims

1. A sludge work tank of controllable sludge volume, characterised in that: The utility model relates to a sludge stirring device, including drive motor, sludge stirring mechanism, sludge quantity control mechanism, drive motor sets up on the working jar body, drive motor is connected with sludge stirring mechanism, sludge stirring mechanism extends to the inside work jar body, and the work jar body is provided with the sludge inlet pipe, and the work jar body bottom is provided with the sludge outlet, sludge stirring mechanism includes rotating rod, stirring vane, rotating rod is connected with drive motor, and rotating rod extends to the inside work jar body, and the rotating rod in work jar body is provided with 2-3 groups stirring vane, sludge quantity control mechanism includes PLC controller, torque sensor, torque sensor is connected with PLC controller communication, and torque sensor sets up on the rotating rod located in the outside work jar body, and the torque of stirring vane is detected through torque sensor.

2. A controllable sludge volume sludge holding tank according to claim 1, characterised in that: The angle between the sludge inlet pipe and the vertical direction is 45 degrees.

3. A controllable sludge volume sludge holding tank according to claim 1, characterised in that: The working jar body is provided with a steam pipeline, which is located at the lower part of the working jar body and is connected with an external steam equipment.

4. The controllable sludge volume sludge holding tank of claim 1, wherein: The stirring vane comprises a vane unit, which is symmetrically arranged around the rotating rod, and the two vane units are staggered.

5. The controllable sludge volume sludge holding tank of claim 1, wherein: The PLC controller is a Siemens S7-200 SMART type PLC controller.

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