Ultrasonic thermomagnetic multi-field reinforced wet sludge mechanical crushing device

Abstract

The utility model belongs to the field of sludge treatment, and particularly discloses an ultrasonic thermomagnetic multi-field reinforced wet sludge mechanical crushing device which comprises a box body, a motor assembly, a rotating shaft, a plurality of crushing blades, a magnetic heat coil and an ultrasonic generation device, a feeding port is formed in one end of the box body, and a discharging port is formed in the other end of the box body; the rotating shaft penetrates through the box body in the length direction, and one end of the rotating shaft is connected with the motor assembly so as to be driven by the motor assembly to rotate. The crushing blades are arranged on the rotating shaft at intervals in the length direction; the magnetic heating coil is arranged on the inner wall of the box body in the circumferential direction, and the ultrasonic generating device is arranged in the box body and is started when the torque of the rotating shaft is larger than a threshold value. The wet sludge is ultrasonically scattered, the situation that the crushing efficiency is affected by wet sludge caking is avoided, meanwhile, the viscous force of the wet sludge is reduced through the thermomagnetic effect, the situation that the crushing efficiency is affected by wet sludge caking is avoided, and then the mechanical crushing efficiency of the wet sludge is improved under the combined effect of ultrasound and thermomagnetism.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of sludge treatment, more specifically, to an ultrasonic thermomagnetic multi-field enhanced wet sludge mechanical crushing device. BACKGROUND

[0002] With the rapid development of economy, people's living standards have improved significantly, and the discharge of domestic sewage is increasing. As the end product of domestic sewage treatment, the production of sludge also increases, which threatens the environment more and more seriously. Moreover, the moisture content of dewatered sludge is still mostly higher than 80%, which makes the sludge volume large and transportation difficult. With the increasingly strict requirements and standards for sludge treatment in China, it is urgent to explore an efficient sludge treatment method. Among the many methods for treating sludge, physical drying technology has obvious advantages such as small occupied area, short treatment period, low energy consumption, and less secondary pollution. If the sludge is crushed and formed before drying, it will help improve the drying effect of the sludge and achieve the purpose of rapid, efficient and energy saving.

[0003] CN222082654U discloses a sludge crushing and drying device. The inner wall of the crushing box is rotatably connected with a rotating shaft, the inner wall of the crushing box is rotatably connected with a main gear, the outer wall of one side of the crushing box is fixedly connected with a rotating motor, the output end of the rotating motor is fixedly connected with the main gear, one side of the rotating shaft is fixedly connected with a secondary gear, and the inner wall of the crushing box is fixedly connected with a mounting cover. Thus, under the action of the rotating motor, the rotating shaft, the main gear and the secondary gear cooperate to make the crushing knife on the rotating shaft rotate and crush the sludge in the crushing box. CN112221687A discloses a stirring and crushing sludge extruding machine, which comprises a shell, a sludge feeding buffer hopper is arranged on the upper part of the shell, and the bottom of the shell is closed. Two spiral shafts with spiral blades are arranged transversely in the shell, and the two ends of the two spiral shafts are respectively mounted on the two side plates of the shell through bearings. A sludge discharging extruding hole is arranged on one side plate of the shell. A motor and an output shaft are arranged outside the other side plate of the shell. One end of the output shaft is connected with the motor, and the other end is fixedly connected with one end of one of the spiral shafts. The two spiral shafts are connected through gears or transmission belts. A stirring and crushing device is fixedly installed on each spiral shaft at a certain distance. High and low material switches for controlling the amount of sludge feeding are arranged on the sludge feeding buffer hopper. The above prior art uses the crushing knife on the rotating shaft to crush by stirring and crushing. However, wet sludge has high water content and high viscosity, and mechanical crushing is prone to clumping, resulting in very low crushing efficiency of the above crushing device. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects or improvement needs of the prior art, the present application provides an ultrasonic thermomagnetic multi-field enhanced wet sludge mechanical crushing device, which aims to solve the problem of low crushing efficiency of the existing sludge crushing device.

[0005] The application provides an ultrasonic thermal magnetic multi-field reinforced wet sludge mechanical crushing device, which specifically comprises a box body, a motor assembly, a rotating shaft, a plurality of crushing blades, a magnetic heating coil and an ultrasonic generating device, wherein one end of the box body is provided with an inlet along the length direction, and the other end is provided with an outlet; the rotating shaft penetrates through the box body along the length direction, and one end of the rotating shaft is connected with the motor assembly; the motor assembly is used for driving the rotating shaft to rotate and measuring the torque of the rotating shaft in real time; each crushing blade is arranged on the rotating shaft at intervals along the length direction; the magnetic heating coil is arranged on the inner wall of the box body in the circumferential direction, and the ultrasonic generating device is arranged in the box body; and the magnetic heating coil and the ultrasonic generating device are started when the torque of the rotating shaft is greater than a threshold value.

[0006] Compared with the prior art, the above technical scheme conceived by the application has the following technical advantages:

[0007] As a further preferred, the inner wall of the box body is provided with a plurality of tooth plates at intervals, and the tooth plates are arranged at intervals with the crushing blades.

[0008] As a further preferred, the inner wall of the box body is provided with a plurality of tooth plates at intervals, and the tooth plates are arranged at intervals with the crushing blades.

[0009] As a further preferred, the inner wall of the box body is provided with a plurality of tooth plates at intervals, and the tooth plates are arranged at intervals with the crushing blades.

[0010] As a further preferred, the threshold value is 18N.m-20N.m.

[0011] As a further preferred, the ultrasonic generating device is arranged at 1-3.

[0012] As a further preferred, the ultrasonic generating device is arranged at a position close to the inlet.

[0013] As a further preferred, the box body is cylindrical.

[0014] As a further preferred, the crushing blades are arranged tangentially with the inner wall of the box body.

[0015] As a further preferred, the distance between adjacent crushing blades is 10cm-20cm.

[0016] The above technical scheme conceived by the application has the following technical advantages compared with the prior art:

[0017] 1. The application can introduce ultrasonic and thermal magnetic into the mechanical crushing of wet sludge by setting the ultrasonic generating device which can be quickly started and stopped according to the torque of the rotating shaft and the magnetic heating coil inside the box, using ultrasonic to disperse wet sludge, avoiding the influence of wet sludge clumping on the crushing efficiency, and at the same time using the thermal magnetic effect to reduce the viscosity of wet sludge (when the viscosity is maximum), to avoid the influence of wet sludge clumping on the crushing efficiency, and then under the joint action of ultrasonic and thermal magnetic, improve the mechanical crushing efficiency of wet sludge;

[0018] 2. In particular, the application can increase the contact area of the magnetic heating coil and wet sludge by setting the tooth plate inside the box wall and setting the magnetic heating coil inside the tooth plate, better reduce the viscosity of wet sludge, and further improve the mechanical crushing efficiency;

[0019] 3. At the same time, the application can use the characteristics of higher moisture content of wet sludge at the inlet as a wave-absorbing medium to improve the absorption capacity of ultrasonic waves and further improve the dispersing effect by setting the ultrasonic generating device near the inlet. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall half-sectional view of the wet sludge mechanical crushing device of the application provided by the embodiment of the application;

[0021] Figure 2 is the side sectional view of the wet sludge mechanical crushing device of the application provided by the embodiment of the application.

[0022] In all the drawings, the same reference signs are used to represent the same elements or structures, wherein:

[0023] 1 - box, 11 - inlet, 12 - outlet, 13 - tooth plate, 2 - rotating shaft, 3 - crushing blade, 4 - magnetic heating coil, 5 - ultrasonic generating device, 6 - motor assembly. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the application more clear and obvious, the application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and not to limit the application.

[0025] As Figure 1 , 2As shown, the present application provides an ultrasonic thermal magnetic multi-field reinforced wet sludge mechanical crushing device, which specifically comprises a box body 1, a motor assembly 6, a rotating shaft 2, a plurality of crushing blades 3, a magnetic heating coil 4 and an ultrasonic generating device 5, wherein: the box body 1 is provided with an inlet 11 at one end in the length direction, the inlet 11 is arranged above the box body 1 and is used for feeding the wet sludge to be crushed, and the other end of the box body 1 is provided with an outlet 12, which is used for discharging the crushed wet sludge;

[0026] The rotating shaft 2 penetrates the box body 1 in the length direction and one end of the rotating shaft 2 is connected with the motor assembly 6, the motor assembly 6 is used for driving the rotating shaft 2 to rotate and measuring the torque of the rotating shaft 2 in real time, the motor assembly 6 can use the commonly used methods in the prior art such as direct measurement method, indirect measurement method, dynamic measurement method, static measurement method, calibration method to measure the torque of the rotating shaft 2 in real time, in a preferred embodiment of the present application, the direct measurement method is used to measure the torque of the rotating shaft 2 in real time, the motor assembly 6 comprises a motor and a torque sensor, the motor is connected with the rotating shaft 2 through a transmission shaft to drive the rotating shaft 2 to rotate, and the torque sensor is installed on the motor transmission shaft to measure the torque of the rotating shaft 2 in real time;

[0027] The rotating shaft 2 is arranged at the center of the box body 1, and each crushing blade 3 is arranged on the rotating shaft 2 in the length direction, and the rotating shaft 2 drives the crushing blade 3 to rotate during work, so as to mechanically crush the wet sludge in the box body 1;

[0028] The magnetic heating coil 4 is arranged on the inner wall of the box body 1 in the circumferential direction to form a magnetic field in the box body 1, so as to heat the wet sludge inside, which can reduce the viscous force of the wet sludge on one hand, avoid the influence of the mechanical crushing efficiency caused by the wet sludge agglomeration, and on the other hand, can reduce the moisture content of the wet sludge, so as to avoid the agglomeration of the wet sludge caused by the high moisture content, and then affect the mechanical crushing efficiency;

[0029] The ultrasonic generating device 5 is arranged in the box body 1 and is used for emitting ultrasonic waves to disperse the wet sludge, so as to further improve the mechanical crushing efficiency;

[0030] The magnetic heating coil 4 and the ultrasonic generating device 5 are started only when the torque of the rotating shaft 2 is greater than a threshold value, because the torque of the rotating shaft 2 directly reflects the agglomeration of the wet sludge, when the torque of the rotating shaft 2 is greater than the threshold value, it indicates that the wet sludge is seriously agglomerated, so starting the magnetic heating coil 4 and the ultrasonic generating device 5 can effectively disperse the wet sludge and improve the mechanical crushing efficiency, and at the same time, it can also avoid the problem of high crushing cost caused by long-term opening of the magnetic heating coil 4 and the ultrasonic generating device 5.

[0031] In a preferred embodiment of the present application, the start-stop control of the magnetic heating coil 4 and the ultrasonic generating device 5 can be realized by manual control, that is, manually starting when the torque of the rotating shaft 2 is greater than a threshold value, and manually stopping when the torque of the rotating shaft 2 is less than or equal to the threshold value. In another preferred embodiment of the present application, the start-stop control of the magnetic heating coil 4 and the ultrasonic generating device 5 can be realized by setting a control unit, which is connected with the motor assembly, the magnetic heating coil 4 and the ultrasonic generating device 5, and controls the start and stop of the magnetic heating coil 4 and the ultrasonic generating device 5 according to the torque measured by the motor assembly in real time.

[0032] The present application can introduce heat and magnetism and ultrasonic into the mechanical crushing of wet sludge by setting the magnetic heating coil and the ultrasonic generating device in the mechanical crushing device of wet sludge, disperse the wet sludge by ultrasonic, and reduce the viscosity of the wet sludge by heat and magnetism to avoid clumping, thereby effectively improving the crushing efficiency of the mechanical crushing device of wet sludge.

[0033] Further, the inner wall of the box 1 is spaced apart and provided with a plurality of tooth plates 13, and the tooth plates 13 are spaced apart from the crushing blades 3. The tooth plates 13 can separate the wet sludge adhered to the crushing blades 3. More preferably, the inside of the tooth plate 13 is provided with a magnetic heating coil 4, so as to increase the contact area of the magnetic heating coil and the wet sludge, and better reduce the viscosity of the wet sludge, and further improve the mechanical crushing efficiency.

[0034] Further, the inside of the rotating shaft 2 is provided with a magnetic heating coil 4, and the magnetic heating coil 4 is independent of the rotating shaft 2, so that the magnetic heating coil 4 can not rotate with the rotating shaft 2, thereby avoiding the magnetic heating coil 4 from knotting due to rotation. At the same time, by setting the magnetic heating coil 4 in the inside of the rotating shaft 2, the wet sludge can be heated from the inside, thereby further increasing the contact area of the magnetic heating coil 4 and the wet sludge, and avoiding the wet sludge from clumping.

[0035] Further, the ultrasonic generating device 5 is provided with 1-3. The ultrasonic generating device 5 is preferably arranged near the inlet 11, so as to make full use of the feature that the wet sludge at the inlet has a higher moisture content, use the moisture as a wave-absorbing medium, improve the absorption capacity of ultrasonic waves, and further improve the dispersing effect.

[0036] Further, the box 1 is preferably in a cylindrical structure, which can avoid the formation of dead angles in the inside of the box 1, thereby avoiding the accumulation of wet sludge and further reducing the crushing effect.

[0037] Further, the crushing blades 3 are tangentially arranged with the inner wall of the box 1, which can further reduce the crushing dead angles in the inside of the box 1, thereby further improving the crushing efficiency.

[0038] Further, the spacing between adjacent broken blades 3 is 10-20 cm, and too small spacing will cause the internal material to agglomerate, causing the shaft to be unable to drive, and the crusher to stop. If the spacing is too large, the crushing effect is poor, the size of the discharged sludge is too large, which is not conducive to the subsequent transportation with carbonization, pyrolysis gasification and incineration equipment, and is easy to cause pipeline blockage.

[0039] The working process of the wet sludge mechanical crushing device provided by the application is as follows: the wet sludge to be crushed is put into the box body 1 from the feeding port 11, then the motor assembly 6 is turned on to drive the rotating shaft 2 to rotate, the wet sludge is crushed by the broken blades 3 on the rotating shaft 2, and the rotating shaft 2 can also cooperate with the toothed plate 13 to prevent the wet sludge from adhering to the broken blades 3. The wet sludge that has been crushed is discharged from the discharge port 12. During the crushing process, the motor assembly 6 measures the torque of the rotating shaft 2 in real time. When the torque is greater than a threshold value, it indicates that the wet sludge is severely agglomerated. Then the magnetic heating coil 4 and the ultrasonic generating device 5 are turned on to disperse the wet sludge by ultrasonic waves, so as to avoid the influence of the wet sludge agglomeration on the crushing efficiency. At the same time, the viscous force of the wet sludge (at the maximum period of viscous force) is reduced by using the thermomagnetic effect, so as to avoid the influence of the wet sludge agglomeration on the crushing efficiency. Then, under the combined action of ultrasonic waves and the thermomagnetic effect, the mechanical crushing efficiency of the wet sludge is improved. When the torque is less than or equal to the threshold value, the magnetic heating coil 4 and the ultrasonic generating device 5 are turned off to avoid high energy consumption and increase the crushing cost.

[0040] It is to be understood that the terms such as "include" and "may include" used in the present application indicate the presence of the disclosed functions, operations or constituent elements, and do not limit one or more additional functions, operations and constituent elements. In the present application, terms such as "include" and / or "have" can be interpreted to mean that a specific feature, number, operation, constituent element, component or combination thereof is present, but cannot be interpreted to exclude the presence or addition of one or more other features, numbers, operations, constituent elements, components or combinations thereof.

[0041] It should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second", etc. are used only for the purpose of description and do not imply or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0043] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Those skilled in the art will readily understand that the above description is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An ultrasonic thermomagnetic multi-field reinforced wet sludge mechanical breaking device, characterized in that, The application relates to a multifunctional crusher, which comprises a box (1), a motor assembly (6), a rotating shaft (2), a plurality of crushing blades (3), a magnetic heating coil (4) and an ultrasonic generating device (5), wherein one end of the box (1) is provided with an inlet (11) along the length direction, and the other end is provided with an outlet (12); the rotating shaft (2) penetrates through the box (1) along the length direction, and one end of the rotating shaft (2) is connected with the motor assembly (6); the motor assembly (6) is used for driving the rotating shaft (2) to rotate and measuring the torque of the rotating shaft (2) in real time; each crushing blade (3) is arranged on the rotating shaft (2) along the length direction; the magnetic heating coil (4) is arranged on the inner wall of the box (1) along the circumference direction; the ultrasonic generating device (5) is arranged in the box (1), and the magnetic heating coil (4) and the ultrasonic generating device (5) are started when the torque of the rotating shaft (2) is greater than a threshold value.

2. The wet sludge mechanical disruption apparatus of claim 1, wherein, The inner wall of the box (1) is provided with a plurality of tooth plates (13) at intervals, and the tooth plates (13) are arranged at intervals with the crushing blades (3).

3. The wet sludge mechanical disruption apparatus of claim 2, wherein, The inside of the tooth plate (13) is provided with the magnetic heating coil (4).

4. The wet sludge mechanical disruption apparatus of claim 1, wherein, The inside of the rotating shaft (2) is provided with the magnetic heating coil (4).

5. The wet sludge mechanical disruption apparatus of claim 1, wherein, The threshold value is 18N.m-20N.m.

6. The wet sludge mechanical disruption apparatus of claim 1, wherein, The ultrasonic generating device (5) is arranged at 1-3.

7. The wet sludge mechanical breaking device of claim 6, wherein, The ultrasonic generating device (5) is arranged close to the inlet (11).

8. The wet sludge mechanical disruption apparatus of claim 1, wherein, The box (1) is in a cylindrical shape.

9. The wet sludge mechanical disruption apparatus of claim 1, wherein, The crushing blade (3) is arranged tangent to the inner wall of the box (1).

10. A wet sludge mechanical breaking device according to any one of claims 1 to 9, characterised in that, The interval between adjacent crushing blades (3) is 10cm-20cm.

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