Sludge storage tank for sludge treatment

Abstract

The utility model relates to a sludge storage tank for sludge treatment, which comprises a tank body, a stirring shaft is mounted in the tank body, and the upper end of the stirring shaft is connected with a driving shaft of a stirring motor through a coupler; a water splashing disc is coaxially fixed on the stirring shaft through a synchronous inserting piece; and a water inlet pipe is arranged on the tank body above the water splashing disc. According to the utility model, the splash disc is fixed at the position close to the top in the tank and is synchronous with the stirring shaft, the rotation of the splash disc is driven by the rotation of the stirring shaft, and water enters from the upper part of the splash disc, so that clear water can be splashed all around under the action of centrifugal force of the splash disc, and the flowability of sludge hung on the inner wall is increased, so that the sludge can easily slide down from the inner wall. In the process, no extra power source needs to be added, the sludge storage space is not occupied, the sludge is located below the splash box and cannot make contact with the splash box, therefore, the splash box structure cannot be corroded and oxidized due to the fact that the sludge makes contact with microorganisms and organic matter, and the service life can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of sludge storage tanks, and in particular to a sludge storage tank for sludge treatment. Background Technology

[0002] In the field of water treatment, storage tanks are commonly used for the storage and transfer of sludge, allowing it to accumulate to a certain quantity before being discharged to subsequent treatment stages. Due to the high viscosity of sludge, and its further increase in viscosity after prolonged storage in tanks, residues and adhesions easily form on the inner walls of the tank during discharge, leading to incomplete sludge removal. Currently, the main method for addressing this issue is mechanical removal, using scrapers or similar structures to remove the sludge from the inner walls. However, this method increases the internal structure of the tank, reducing space and thus affecting the sludge storage capacity. Furthermore, the internal structure is difficult to disassemble and replace during subsequent maintenance. Additionally, the sludge contains a large number of microorganisms and organic matter, which easily adhere to the mechanical structures within the tank, causing oxidation and corrosion and shortening their service life. Utility Model Content

[0003] The purpose of this application is to provide a sludge storage tank for sludge treatment, aiming to solve the problems existing in the prior art.

[0004] This application provides a sludge storage tank for sludge treatment, including a tank body, a vertically extending stirring shaft installed inside the tank body, and a drive shaft of a stirring motor connected to the upper end of the stirring shaft via a coupling; a splash plate is coaxially fixed on the stirring shaft via a synchronization plug, and a water inlet pipe is installed on the tank body above the splash plate; the synchronization plug includes a skirt fixed on the splash plate and a limiting ring fixed on the stirring shaft, and a limiting groove for accommodating the skirt is formed on the limiting ring via a limiting member; limiting blocks are fixed on the skirt, with two limiting blocks in a group, and the two limiting blocks in the same group are respectively located on both sides of the rotation direction of the limiting member.

[0005] Furthermore, the axial portion of the splashing plate has a through hole, the inner diameter of which is larger than the outer diameter of the stirring shaft; the plate skirt is annular, and the plate skirt is connected to the splashing plate via a flange.

[0006] Furthermore, the bottom of the splash plate is flat, while the top of the splash plate is convex, with a higher center and a lower edge.

[0007] Furthermore, the top surface of the splash plate is provided with multiple water guide grooves around the through hole, and one end of the water guide groove forms a groove on the periphery of the splash plate.

[0008] Furthermore, the limiting member is U-shaped, and the groove in the middle of the limiting member is the limiting groove. The limiting member is distributed radially along the limiting ring; the width of the limiting groove matches the thickness of the skirt.

[0009] Further, the interval between the two limiting blocks of the same group is matched with the thickness of the limiting member.

[0010] The beneficial effect of the utility model is: the utility model has a splash tray fixed synchronously with the stirring shaft at the place close to the top in the tank, the rotation of the stirring shaft drives the rotation of the splash tray, and the water inlet above the splash tray makes the clean water splash around under the centrifugal force of the splash tray, thereby increasing the flowability of the sludge hung on the inner wall to make the sludge easily slide down from the inner wall. No additional power source is needed in the process, and no sludge storage space is occupied, the sludge below the splash tray cannot contact the splash tray, so the splash tray structure will not be corroded and oxidized due to contact with microorganisms and organic matter, and the service life can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic view of the utility model.

[0012] Figure 2 It is the structure schematic view of the synchronous plug-in.

[0013] Figure 3 It is the combined structure schematic view of the disc skirt and the limiting ring.

[0014] In the drawing:

[0015] 1, tank body; 2, sludge outlet; 3, stirring shaft; 4, coupling; 5, stirring motor; 6, driving shaft; 7, synchronous plug-in; 8, splash tray; 9, water inlet pipe; 10, disc skirt; 11, limiting ring; 12, through hole; 13, flange plate; 14, water guide groove; 15, limiting member; 16, limiting groove; 17, limiting block; 18, sludge inlet. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0017] For example, Figure 1The illustrated sludge storage tank for sludge treatment comprises a tank body 1, the lower end of the tank body 1 is tapered and provided with a sludge outlet 2 for discharging sludge. A vertically extending stirring shaft 3 is installed in the tank body 1, the upper end of the stirring shaft 3 is connected with the driving shaft 6 of a stirring motor 5 through a coupling 4, the stirring shaft 3 is driven to rotate by the stirring motor 5, and conventional propeller blades are arranged on the stirring shaft 3 to stir the sludge in the tank body 1. A splash pan 8 is coaxially fixed on the stirring shaft 3 through a synchronous insert 7, and a water inlet pipe 9 is installed on the tank body 1 above the splash pan 8. The synchronous insert 7 fixes the splash pan 8 with the stirring shaft 3, so that the stirring shaft 3 drives the splash pan 8 to rotate, water is poured onto the splash pan 8 through the water inlet pipe 9, the rotating splash pan 8 can generate centrifugal force on the water to make the water splash out in a circular manner and impact on the inner wall of the tank body 1 and then flow down along the inner wall, thereby diluting the sludge attached to the inner wall of the tank body 1 and increasing the flowability of the sludge to facilitate the discharge of the sludge from the tank body 1. A sludge inlet 18 is formed in the inner wall of the tank body 1 below the splash pan 8. In addition, the tank body 1 is also provided with devices or components for realizing air pressure balance, odor filtration and other conventional functions, which are very mature in the prior art, so they are not described in detail in the present embodiment.

[0018] As shown in Figure 2 and Figure 3 The synchronous insert 7 comprises a disc skirt 10 fixed at the bottom of the splash pan 8 and a limiting ring 11 fixed on the stirring shaft 3. The shaft part of the splash pan 8 is provided with a through hole 12, and the inner diameter of the through hole 12 is greater than the outer diameter of the stirring shaft 3 to accommodate the stirring shaft 3. The disc skirt 10 is annular, and the inside of the disc skirt 10 also accommodates the stirring shaft 3. The disc skirt 10 and the splash pan 8 are connected by a half flange 13 and bolts. The bottom of the splash pan 8 is flat, which facilitates the fixation of the flange 13. The top of the splash pan 8 is convex with the middle higher and the edges lower, so that the water can splash outward. A plurality of involute-shaped water guide grooves 14 are arranged around the through hole 12 on the top surface of the splash pan 8, and one end of each water guide groove 14 forms a notch on the peripheral surface of the splash pan 8. When the eccentricity of the water inlet pipe 9 is large, the water guide grooves 14 can guide the water to the other side of the outlet, so that the water can splash in all directions.

[0019] The limiting ring 11 is provided with limiting grooves 16 for accommodating the disc skirt 10 through limiting members 15. The limiting members 15 are concave, and the concave groove in the middle of the limiting member 15 is the limiting groove 16, and the width of the limiting groove 16 matches the thickness of the disc skirt 10. The limiting members 15 are distributed along the radial direction of the limiting ring 11. In the present embodiment, there are four limiting members 15, and the limiting grooves 16 on the four limiting members 15 are located at different positions of the disc skirt 10. The splash pan 8 is inserted into the limiting groove 16 from top to bottom through the disc skirt 10, which realizes the preliminary fixation of the splash pan 8 on the stirring shaft 3. This fixation method is convenient for disassembly and assembly, and is conducive to subsequent maintenance and replacement.

[0020] The limit block 17 is fixed on the disc skirt 10, two limit blocks 17 are a group, the interval of the two limit blocks 17 in the same group is matched with the thickness of the limit piece 15, and the two limit blocks 17 in the same group correspond to the rotation direction of the limit piece 15 on both sides. The limit block 17 limits the limit piece 15 from the clockwise direction and the counterclockwise direction, so that the stirring shaft 3 can drive the splash plate 8 to rotate synchronously when rotating.

[0021] The utility model discloses in the stage of discharging sludge, the stirring shaft 3 rotation can speed up the discharge of sludge. Because the sludge viscosity rises due to water loss during sludge storage, it is easy to remain on the inner wall of the tank 1 and not easy to fall. At this time, the water inlet can be opened, the water is poured on the rotating splash plate 8 and splashes to the surrounding tank 1 inner wall, dilutes and flushes the sludge remaining on the inner wall of the tank 1, so that the adhesion of the sludge is reduced, thereby facilitating the discharge. And the sludge will be subjected to aerobic fermentation in the subsequent processing stage, so that the sludge with increased moisture will not adversely affect the subsequent fermentation process.

[0022] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

Claims

1. A sludge storage tank for sludge treatment, characterized in that, The device includes a tank body, inside which a vertically extending stirring shaft is installed. The upper end of the stirring shaft is connected to the drive shaft of a stirring motor via a coupling. A splash plate is coaxially fixed to the stirring shaft via a synchronization plug, and a water inlet pipe is installed on the tank body above the splash plate. The synchronization plug includes a skirt fixed to the splash plate and a limiting ring fixed to the stirring shaft. The limiting ring has a limiting groove formed by limiting elements to accommodate the skirt. Limiting blocks are fixed on the skirt, with two limiting blocks per group. The two limiting blocks in the same group are respectively located on both sides of the rotation direction of the limiting elements.

2. The sludge storage tank for sludge treatment according to claim 1, characterized in that, The splash plate has a through hole on its shaft, the inner diameter of which is larger than the outer diameter of the stirring shaft; the skirt is annular, and the skirt is connected to the splash plate by a flange.

3. The sludge storage tank for sludge treatment according to claim 2, characterized in that, The bottom of the splash plate is flat, and the top of the splash plate is a convex surface that is higher in the middle and lower at the edges.

4. The sludge storage tank for sludge treatment according to claim 3, characterized in that, The top surface of the splash plate is provided with multiple water guide grooves around the through hole, and one end of the water guide groove forms a groove on the periphery of the splash plate.

5. The sludge storage tank for sludge treatment according to claim 1, characterized in that, The limiting member is U-shaped, and the groove in the middle of the limiting member is the limiting groove. The limiting member is distributed radially along the limiting ring. The width of the limiting groove matches the thickness of the skirt.

6. The sludge storage tank for sludge treatment according to claim 5, characterized in that, The spacing between two limit blocks in the same group is matched with the thickness of the limit component.

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