Sludge steam drying stirring device

Abstract

A kind of sludge steam drying stirring equipment, including stirring cylinder, vertical stirring shaft, drive motor assembly, a plurality of fixed blades are provided on the stirring shaft, further including differential speed shaft sleeve, centrifugal sliding part, the differential speed shaft sleeve is sleeved on stirring shaft, the outer surface of the stirring shaft is axially spaced apart and is provided with a pair of limiting flange, the outer surface of the stirring shaft between the limiting flange is provided with clamping groove along radial direction, the inner hole wall surface of the differential speed shaft sleeve is provided with sliding channel along radial direction, the sliding channel is inclined and is arranged, including high position part away from stirring shaft, low position part of the clamping groove, the vertical height of the high position part is higher than the numerical height of low position part, the outer surface of the differential speed shaft sleeve is provided with differential speed blade;The centrifugal sliding part is arranged in sliding channel and is slidably connected, the drive motor assembly is rotationally linked with stirring shaft, and stirring shaft is controlled to rotate periodically at high speed, slow rotation cycle.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge drying equipment, specifically to a sludge steam drying and stirring device. Background Technology

[0002] Wastewater treatment plants generate large amounts of sludge during wastewater treatment, which requires drying. Sludge drying, also known as sludge dewatering, refers to the process of removing most of the water content from sludge through processes such as leaching or evaporation, typically using self-evaporation facilities like sludge drying plants. After sludge concentration, physical methods are used to further reduce its water content, facilitating its transportation, storage, utilization, or further treatment. During sludge drying, stirring is generally required to accelerate the evaporation of water. A problem with existing technologies is that when sludge is stirred in a mixing drum, the sludge rotates with the agitator, easily forming synchronously rotating clumps, weakening the breaking-up effect and reducing drying efficiency.

[0003] Therefore, if the mixing process can create rhythmic variations and break up the sludge clumps, the drying efficiency will be significantly improved. Utility Model Content

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a sludge steam drying and mixing device.

[0005] The technical solution of this utility model is as follows: A sludge steam drying and mixing device includes a mixing drum, a vertical mixing shaft, and a drive motor assembly. The mixing shaft is provided with several fixed blades and also includes a differential bushing and a centrifugal sliding component. The differential bushing is sleeved on the mixing shaft. A pair of limiting flanges are axially spaced on the outer circumferential surface of the mixing shaft. A locking groove is provided radially on the outer circumferential surface of the mixing shaft between the limiting flanges. A sliding channel is provided radially on the inner wall of the differential bushing. The sliding channel is inclined and includes a high part away from the mixing shaft and a low part connecting to the locking groove. The vertical height of the high part is higher than the numerical height of the low part. Differential blades are provided on the outer circumferential surface of the differential bushing.

[0006] The centrifugal sliding component is slidably fitted within the sliding channel. The drive motor unit is rotated in conjunction with the stirring shaft, controlling the stirring shaft to perform periodic high-speed and slow-speed rotation cycles. When the stirring shaft rotates at high speed, the centrifugal sliding component is driven by centrifugal force to leave the locking groove, the differential bushing disengages from the stirring shaft, and the speed decreases until it stops rotating. When the stirring shaft rotates at slow speed, the centrifugal sliding component falls into the locking groove along the inclined sliding channel, and the differential bushing engages with the stirring shaft and rotates synchronously.

[0007] A further feature of this invention is that a first steam channel is provided inside the stirring shaft, which extends to each fixed blade and has a first air inlet and a first air outlet that are connected to the steam in the plant area.

[0008] A further feature of this invention is that the stirring drum is provided with a jacket, which forms a second steam channel. The second steam channel has a second air inlet and a second air outlet that are connected to the steam in the plant area.

[0009] A further feature of this invention is that the stirring cylinder is divided into two parts, including an inner cylinder and an outer cylinder. The diameter difference between the inner and outer cylinders forms a second steam channel. The outer cylinder is provided with several supporting protrusions that abut against the inner cylinder.

[0010] A further feature of this invention is that the centrifugal sliding member is a sphere.

[0011] The beneficial effects of this utility model are as follows: as shown in the appendix to the specification. Figure 4 , 5 As shown, the drive motor unit is rotated in conjunction with the stirring shaft, controlling the stirring shaft to rotate periodically at high speed and slow speed. When the stirring shaft rotates at high speed, the centrifugal sliding component is driven by centrifugal force to leave the locking groove, the differential bushing disengages from the stirring shaft, and the speed is reduced to stop rotating. When the stirring shaft rotates at slow speed, the centrifugal sliding component falls into the locking groove along the inclined sliding channel, and the differential bushing engages with the stirring shaft and rotates synchronously.

[0012] During the disengagement process, the insertion shaft sleeve gradually decelerates, creating a speed difference between the differential blades and the still rotating fixed blades. This causes turbulence in the sludge in the two areas, improving the sludge crushing effect and thus enhancing the sludge drying efficiency, while preventing the sludge from inertially rotating and forming clumps.

[0013] Steam is introduced into the stirring shaft and stirring drum to increase the temperature of the stirring environment, thereby accelerating the drying effect. Attached Figure Description

[0014] Figure 1 The structure of this utility model embodiment Figure 1 ;

[0015] Figure 2 The structure of this utility model embodiment Figure 2 ;

[0016] Figure 3 The structure of this utility model embodiment Figure 3 ;

[0017] Figure 4 The structure of this utility model embodiment Figure 4 .

[0018] Figure 5 The structure of this utility model embodiment Figure 5 .

[0019] Among them, 1-stirring drum, 11-second steam channel, 12-support protrusion, 2-stirring shaft, 21-fixed blade, 22-limiting flange, 23-slot, 24-first steam channel, 3-drive motor assembly, 4-differential bushing, 41-sliding channel, 42-differential blade, 5-centrifugal sliding component.

[0020] To better illustrate this embodiment, some parts in the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the actual size of the product. Furthermore, the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Detailed Implementation

[0021] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings. Other related parts can be referred to the general design. In the absence of conflict, the embodiments and technical features in the embodiments of this application can be combined with each other to obtain new embodiments.

[0022] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-5 As shown,

[0023] A sludge steam drying and mixing device includes a mixing drum 1, a vertical mixing shaft 2, and a drive motor assembly 3. The mixing shaft 2 is provided with a plurality of fixed blades 21. It also includes a differential bushing 4 and a centrifugal sliding member 5. The differential bushing 4 is sleeved on the mixing shaft 2. A pair of limiting flanges 22 are axially spaced on the outer peripheral surface of the mixing shaft 2. A locking groove 23 is provided radially on the outer peripheral surface of the mixing shaft 2 between the limiting flanges 22. A sliding channel 41 is provided radially on the inner wall of the differential bushing 4. The sliding channel 41 is inclined and includes a high part away from the mixing shaft 2 and a low part close to the locking groove 23. The vertical height of the high part is higher than the numerical height of the low part. Differential blades 42 are provided on the outer peripheral surface of the differential bushing 4.

[0024] The centrifugal sliding member 5 is disposed in the sliding channel 41 for sliding engagement. The drive motor unit is rotated in linkage with the stirring shaft 2, controlling the stirring shaft 2 to perform periodic high-speed rotation and slow rotation cycles. When the stirring shaft 2 rotates at high speed, the centrifugal sliding member 5 is driven away from the locking groove 23 by centrifugal force, the differential bushing 4 is disengaged from the stirring shaft 2, and the speed is reduced to stop rotating. When the stirring shaft 2 rotates at slow speed, the centrifugal sliding member 5 falls into the locking groove 23 along the inclined sliding channel 41, and the differential bushing 4 is engaged with the stirring shaft 2 and rotates synchronously.

[0025] The stirring shaft 2 is provided with a first steam channel 24, which extends to each fixed blade 21 and is provided with a first air inlet and a first air outlet that are connected to the steam in the plant area.

[0026] The stirring drum 1 is provided with a jacket, which forms a second steam channel 11. The second steam channel has a second air inlet and a second air outlet that are connected to the steam in the plant area.

[0027] The stirring cylinder 1 is configured in two parts, including an inner cylinder and an outer cylinder. The diameter difference between the inner and outer cylinders forms a second steam channel 11. The outer cylinder is provided with several supporting protrusions 12 that abut against the inner cylinder.

[0028] The centrifugal sliding element 5 is a sphere.

[0029] The drive motor unit is rotated in conjunction with the stirring shaft 2, controlling the stirring shaft 2 to perform periodic high-speed rotation and slow rotation cycles. When the stirring shaft 2 rotates at high speed, the centrifugal sliding member 5 is driven away from the locking groove 23 by centrifugal force, and the differential bushing 4 disengages from the stirring shaft 2, reducing the speed to stop rotating. When the stirring shaft 2 rotates at slow speed, the centrifugal sliding member 5 falls into the locking groove 23 along the inclined sliding channel 41, and the differential bushing 4 engages with the stirring shaft 2 and rotates synchronously.

[0030] During the disengagement process, the insertion shaft sleeve gradually decelerates, creating a speed difference between the differential blade 42 and the still rotating fixed blade 21. This causes the sludge in the two areas to turbulently flow, improving the sludge crushing effect and thus enhancing the sludge drying efficiency, while preventing the sludge from inertially rotating and forming clumps.

[0031] Steam is introduced into the stirring shaft 2 and the stirring drum 1 to increase the temperature of the stirring environment, thereby accelerating the drying effect.

[0032] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A sludge steam drying and mixing device, comprising a mixing drum, a vertical mixing shaft, and a drive motor assembly, wherein the mixing shaft is provided with a plurality of fixed blades, characterized in that: It also includes a differential bushing and a centrifugal sliding component. The differential bushing is sleeved on the stirring shaft. A pair of limiting flanges are axially spaced on the outer circumferential surface of the stirring shaft. A locking groove is radially provided on the outer circumferential surface of the stirring shaft between the limiting flanges. A sliding channel is radially provided on the inner wall of the differential bushing. The sliding channel is inclined and includes a high part away from the stirring shaft and a low part connecting to the locking groove. The vertical height of the high part is higher than the numerical height of the low part. Differential blades are provided on the outer circumferential surface of the differential bushing. The centrifugal sliding component is slidably fitted within the sliding channel. The drive motor unit is rotated in conjunction with the stirring shaft, controlling the stirring shaft to perform periodic high-speed and slow-speed rotation cycles. When the stirring shaft rotates at high speed, the centrifugal sliding component is driven by centrifugal force to leave the locking groove, the differential bushing disengages from the stirring shaft, and the speed decreases until it stops rotating. When the stirring shaft rotates at slow speed, the centrifugal sliding component falls into the locking groove along the inclined sliding channel, and the differential bushing engages with the stirring shaft and rotates synchronously.

2. The sludge steam drying and mixing equipment according to claim 1, characterized in that: The stirring shaft is provided with a first steam channel, which extends to each fixed blade and is provided with a first air inlet and a first air outlet that are connected to the steam in the plant area.

3. The sludge steam drying and mixing equipment according to claim 2, characterized in that: The stirring drum is provided with a jacket, which forms a second steam channel. The second steam has a second air inlet and a second air outlet that are connected to the steam in the plant area.

4. The sludge steam drying and mixing equipment according to claim 3, characterized in that: The stirring cylinder is configured in two parts, including an inner cylinder and an outer cylinder. The diameter difference between the inner and outer cylinders forms a second steam channel. The outer cylinder is provided with several supporting protrusions that abut against the inner cylinder.

5. A sludge steam drying and mixing device according to any one of claims 1-4, characterized in that: The centrifugal sliding element is a sphere.

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