Flocculation stirring tank for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a flocculation stirring tank for sewage treatment. Comprising a tank; a dissolving device is arranged in the feeding hole of the tank body; the dissolving device comprises a dissolving barrel; a mounting ring is arranged on the stirring shaft in a sliding manner; an auxiliary spring is connected between the mounting ring and the stirring shaft; a dissolving assembly is arranged on the mounting ring; the dissolving assembly comprises a mounting rod, a first elastic plate, a second elastic plate and an auxiliary structure. Firstly, a flocculating agent and water are added into the dissolving barrel for solution preparation, the flocculating agent is fully stirred and ground through the dissolving assembly to promote dissolving of the flocculating agent, after the flocculating agent is fully dissolved, the flocculating agent is discharged into the tank body through the discharging pipe to be stirred, and compared with a traditional mode that the flocculating agent is directly added into sewage, rapid dissolving of the flocculating agent is better facilitated; therefore, the sewage treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a flocculation stirring tank for sewage treatment. Background Art

[0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for drainage into a certain water body or reuse. Water pollution can be mainly divided into three categories according to the different pollutants: chemical pollution, physical pollution and biological pollution. In sewage treatment, one of the steps is flocculation. Flocculation refers to the aggregation and enlargement of suspended particles in water or liquid, or the formation of flocs, thereby accelerating the aggregation of particles and achieving the purpose of solid-liquid separation. Among them, the use of flocculants plays a vital role. The flocculation mixing tank is a common equipment used to fully mix the flocculant with sewage and promote the combination of the flocculant with suspended matter in the sewage, thereby achieving effective sewage treatment.

[0003] In the prior art, for example, a Chinese patent with the announcement number CN220531469U, entitled A Flocculation and Stirring Tank for Sewage Treatment, discloses a technical solution that starts a vibrator so that a spring drives a feed plate to vibrate, thereby dispersing the internal flocculant through the effect of vibration, and disperses the flocculant into the stirring barrel through a dispersing hard tube, thereby increasing the mixing speed of the sewage and the flocculant. However, the flocculant is generally a powdered solid, and when it is sprinkled into the stirring barrel, part of it may not be dissolved in time and settle to the bottom of the stirring tank, thereby affecting the effect of the flocculant in sewage treatment. Utility Model Content

[0004] The utility model provides a flocculation stirring tank for sewage treatment to solve the above problems.

[0005] The utility model adopts the following technical scheme: a flocculation stirring tank for sewage treatment, comprising a tank body; the tank body is vertically arranged, and a sewage inlet and a feed inlet are arranged at the upper end; a stirring assembly is arranged in the tank body; a dissolving device is arranged in the feed inlet of the tank body;

[0006] The dissolving device comprises a dissolving cylinder; the axis of the dissolving cylinder is vertically arranged and fixed at the feeding port; the upper end of the dissolving cylinder is provided with a feeding port, and the lower end is provided with a discharging pipe; the discharging pipe extends into the tank body; a stirring shaft is coaxially arranged in the dissolving cylinder; the upper end of the stirring shaft is rotatably mounted on the upper end of the dissolving cylinder; the upper end of the stirring shaft is connected with a dissolving motor; the dissolving motor is fixed at the upper end of the dissolving cylinder; a mounting ring is slidably arranged at the lower end of the stirring shaft; an auxiliary spring is connected between the mounting ring and the stirring shaft; a dissolving assembly is arranged on the mounting ring;

[0007] The dissolving assembly includes a mounting rod, a first elastic plate, a second elastic plate, and an auxiliary structure; the mounting rod is arranged radially along the mounting ring, the mounting rod is arranged between the outer wall of the mounting ring and the inner wall of the dissolving cylinder, and one end of the mounting rod close to the mounting ring is fixedly connected to the mounting ring;

[0008] The length direction of the first elastic plate is arranged along the radial direction of the mounting ring; the first elastic plate is arranged up and down tilted; the second elastic plate is arranged below the first elastic plate; the length direction of the second elastic plate is arranged along the radial direction of the mounting ring; one end of the two elastic plates is fixed, and the other ends are separated from each other to form a V-shape with the small end facing the bottom of the dissolving cylinder; the two elastic plates are distributed on the upper and lower sides of the mounting rod; the upper end of the first elastic plate is rotatably mounted on the mounting rod through a rotating sleeve, and a torsion spring is connected between the rotating sleeve and the mounting ring;

[0009] The auxiliary structure is arranged between the dissolving cylinder and the mounting rod, and is used to periodically drive the mounting ring to move up and down when the stirring shaft drives the dissolving component to rotate through the mounting ring, so that the auxiliary spring can periodically store and release force, and when the mounting ring moves down to the lowest point, the angle between the two elastic plates is reduced, and the second elastic plate is made to fit the bottom wall of the dissolving cylinder.

[0010] Furthermore, the second elastic plate is tilted up and down; the first elastic plate and the second elastic plate have the same tilt direction. In the process of the mounting ring moving down to the lowest point, the lower end of the second elastic plate first abuts against the bottom wall of the dissolving cylinder, and a V-shaped gap is formed between the second elastic plate and the bottom wall of the dissolving cylinder. As the mounting ring moves down, the downward pressure provided by the mounting rod to the first elastic plate increases, and the first elastic plate rotates around the mounting rod to store force, and the second elastic plate and the bottom wall of the dissolving cylinder fit together, so that the V-shaped gap angle between the second elastic plate and the bottom wall of the dissolving cylinder gradually decreases, providing shear force for the flocculant to be crushed. When the mounting ring moves down to the lowest point, the angle between the two elastic plates decreases, and the second elastic plate stores force. When the auxiliary spring releases force to drive the mounting ring to move up, the torsion spring releases force, driving the first elastic plate to rotate toward the bottom wall of the dissolving cylinder, and the second elastic plate releases force to rotate toward the bottom wall of the dissolving cylinder, so as to form convection for the ground flocculant on the bottom wall of the dissolving cylinder, and promote the dissolution of the flocculant.

[0011] Furthermore, the lower end of the first elastic plate is in an arc shape that is concave toward the second elastic plate, so as to guide the flocculant to flow upward when the flocculant flows upward along the first elastic plate.

[0012] Furthermore, the fixed connection end of the first elastic plate and the second elastic plate is in the shape of a blade, which is used to facilitate shoveling the flocculant on the bottom wall of the dissolving cylinder to guide the flocculant to flow upward along the first elastic plate.

[0013] Furthermore, the auxiliary structure includes a plurality of auxiliary grooves; the plurality of auxiliary grooves are evenly distributed along the circumference of the dissolving cylinder on the inner side wall of the dissolving cylinder; the plurality of auxiliary grooves are connected end to end and surround a circle; one end of the mounting rod close to the dissolving cylinder is slidably matched with the auxiliary groove;

[0014] The auxiliary tank includes a force storage section, a grinding section, and a force release section;

[0015] The power storage section is set up with an up and down tilt;

[0016] The grinding section is horizontally arranged at the lower end of the power storage section; one end of the grinding section close to the power storage section is connected to the lower end of the power storage section;

[0017] The force release section is arranged in an up-and-down tilted manner on a side of the grinding section away from the force storage section; the tilting direction of the force release section is opposite to that of the force storage section, and the angle between the force release section and the horizontal plane is greater than the angle between the force storage section and the horizontal plane; the lower end of the force release section is connected to an end of the grinding section away from the force storage section;

[0018] The agitating shaft drives the mounting ring to rotate, the mounting ring drives the mounting rod to rotate, and the mounting rod drives the first elastic plate and the second elastic plate to rotate. When the mounting rod slides to the force storage section, the force storage section drives the mounting rod to drive the mounting ring to move downward, so that the auxiliary spring accumulates force; when the mounting rod slides to the grinding section, the second elastic plate fits the bottom wall of the dissolving cylinder to grind the flocculant on the bottom wall of the dissolving cylinder; when the mounting rod slides to the force release section, the force release section causes the auxiliary spring to release force to drive the mounting rod to drive the mounting ring to move quickly.

[0019] Furthermore, a solenoid valve is provided on the discharge pipe.

[0020] Furthermore, the stirring assembly includes a stirring shaft; the stirring shaft is rotatably installed in the tank body; a stirring blade is fixed on the stirring shaft; a stirring motor is connected to the upper end of the stirring shaft; and the stirring motor is fixed at the upper end of the tank body.

[0021] Furthermore, a water outlet and a mud outlet are provided on the tank body; the water outlet is higher than the mud outlet; the mud outlet is arranged at the lower end of the tank body; and a mud pump is connected to the mud outlet.

[0022] The beneficial effect is as follows: first, flocculant and water are added into the dissolving cylinder to prepare the solution; when the stirring shaft drives the dissolving component to rotate through the mounting ring, the auxiliary structure periodically drives the mounting ring to move up and down, so that the auxiliary spring periodically accumulates and releases force; and when the mounting ring moves down to the lowest point, the second elastic plate and the bottom wall of the dissolving cylinder fit together to extrude and grind part of the flocculant at the bottom of the dissolving cylinder to promote the dissolution of the flocculant; at the same time, part of the flocculant flows upward along the first elastic plate to promote the up and down flow of the flocculant; when the auxiliary spring releases the force to drive the mounting ring to move upward, the flocculant retained on the first elastic plate is pushed upward to promote the dissolution of the deposited flocculant; after the flocculant is fully dissolved, it is discharged into the tank body through the discharge pipe for stirring, thereby improving the effect of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 This is a structural schematic diagram of an embodiment of a flocculation stirring tank for sewage treatment according to the utility model;

[0025] Figure 2 A side view of an embodiment of the utility model;

[0026] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0027] Figure 4 A cross-sectional view of a dissolving device according to an embodiment of the present utility model;

[0028] Figure 5 It is a schematic diagram of a mounting ring, a first elastic plate, a second elastic plate, and a stirring shaft according to an embodiment of the utility model;

[0029] Figure 6 It is a side view of the mounting ring, the first elastic plate, the second elastic plate, and the stirring shaft of an embodiment of the utility model;

[0030] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0031] Figure 8 It is a schematic diagram of a dissolving cylinder and an auxiliary tank according to an embodiment of the utility model;

[0032] Fig. 9 It is a side view of the dissolving cylinder and the auxiliary tank of the embodiment of the utility model;

[0033] Fig.10 for Fig. 9 Cross-sectional view at CC.

[0034] In the figure: 100, tank body; 110, sewage inlet; 120, water outlet; 130, mud outlet; 140, stirring assembly; 210, dissolving cylinder; 211, discharge pipe; 212, solenoid valve; 213, stirring shaft; 220, mounting ring; 230, auxiliary spring; 241, mounting rod; 242, first elastic plate; 243, second elastic plate; 244, torsion spring; 245, elastic sheet; 250, auxiliary groove; 251, force storage section; 252, grinding section; 253, force release section. DETAILED DESCRIPTION

[0035] The embodiments of the utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and should not be construed as limiting the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0036] The features of the terms "first" and "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0037] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] An embodiment of a flocculation stirring tank for sewage treatment of the utility model is as follows Figures 1 to 10As shown: A flocculation and stirring tank for sewage treatment includes a tank body 100. The tank body 100 is arranged vertically, and a sewage inlet 110 and a feed inlet are provided at the upper end. A stirring assembly 140 is provided in the tank body 100. The stirring assembly 140 includes a stirring shaft. The stirring shaft is rotatably installed in the tank body 100. A stirring blade is fixed on the stirring shaft. A stirring motor is connected to the upper end of the stirring shaft. The stirring motor is fixed to the upper end of the tank body 100. A dissolving device is provided in the feed inlet of the tank body 100. A water outlet 120 and a mud outlet 130 are provided on the tank body 100. The water outlet 120 is higher than the mud outlet 130. The mud outlet 130 is arranged at the lower end of the tank body 100. A mud pump is connected to the mud outlet 130.

[0040] The dissolving device includes a dissolving cylinder 210. The axis of the dissolving cylinder 210 is vertically arranged and fixed at the feed port. A feeding port is provided at the upper end of the dissolving cylinder 210, and a discharge pipe 211 is provided at the lower end. The discharge pipe 211 extends into the tank body 100. A solenoid valve 212 is provided on the discharge pipe 211. A stirring shaft 213 is coaxially provided in the dissolving cylinder 210. The upper end of the stirring shaft 213 is rotatably mounted on the upper end of the dissolving cylinder 210. A dissolving motor is connected to the upper end of the stirring shaft 213. The dissolving motor is fixed to the upper end of the dissolving cylinder 210. A mounting ring 220 is provided at the lower end of the stirring shaft 213 so as to slide up and down. An auxiliary spring 230 is connected between the mounting ring 220 and the stirring shaft 213. A dissolving assembly is provided on the mounting ring 220.

[0041] The dissolving assembly includes a mounting rod 241, a first elastic plate 242, a second elastic plate 243, and an auxiliary structure. The mounting rod 241 is arranged radially along the mounting ring 220, the mounting rod 241 is arranged between the outer wall of the mounting ring 220 and the inner wall of the dissolving cylinder 210, and one end of the mounting rod 241 close to the mounting ring 220 is fixedly connected to the mounting ring 220.

[0042] The length direction of the first elastic plate 242 is arranged along the radial direction of the mounting ring 220. The first elastic plate 242 is arranged to be inclined up and down.

[0043] The second elastic plate 243 is arranged below the first elastic plate 242. The length direction of the second elastic plate 243 is arranged radially along the mounting ring 220. One end of the two elastic plates is fixed, and the other ends are separated from each other to form a V-shape with the small end facing the bottom of the dissolving cylinder 210. The two elastic plates are distributed on the upper and lower sides of the mounting rod 241. The upper end of the first elastic plate 242 is rotatably mounted on the mounting rod 241 through a rotating sleeve, and a torsion spring 244 is connected between the rotating sleeve and the mounting ring 220. The lower end of the first elastic plate 242 is an arc shape concave toward the second elastic plate 243. It is used to guide the flocculant to flow upward when the flocculant flows upward along the first elastic plate 242.

[0044] The fixed connection end of the first elastic plate 242 and the second elastic plate 243 is in the shape of a blade, which is used to scoop up the flocculant on the bottom wall of the dissolving cylinder 210 to guide the flocculant to flow upward along the first elastic plate 242 .

[0045] The second elastic plate 243 is tilted up and down. The first elastic plate 242 and the second elastic plate 243 are tilted in the same direction. When the mounting ring 220 moves down to the lowest point, the lower end of the second elastic plate 243 first abuts against the bottom wall of the dissolving cylinder 210, and a V-shaped gap is formed between the second elastic plate 243 and the bottom wall of the dissolving cylinder 210. As the mounting ring 220 moves down, the mounting rod 241 increases the downward pressure provided to the first elastic plate 242, and the first elastic plate 242 rotates around the mounting rod 241 to store force for the torsion spring 244, and the second elastic plate 243 fits the bottom wall of the dissolving cylinder 210, so that the angle of the V-shaped gap between the second elastic plate 243 and the bottom wall of the dissolving cylinder 210 gradually decreases, providing shear force for the flocculant to be crushed. When the mounting ring 220 moves down to the lowest point, the angle between the two elastic plates decreases, and the second elastic plate 243 accumulates force. When the auxiliary spring 230 releases force to drive the mounting ring 220 to move up, the torsion spring 244 releases force, driving the first elastic plate 242 to rotate toward the bottom wall of the dissolving cylinder 210, and the second elastic plate 243 releases force to rotate toward the bottom wall of the dissolving cylinder 210, so as to form convection for the ground flocculant on the bottom wall of the dissolving cylinder 210 and promote the dissolution of the flocculant. An elastic sheet 245 is auxiliaryly connected between the second elastic plate 243 and the rotating sleeve.

[0046] The auxiliary structure is arranged between the dissolving cylinder 210 and the mounting rod 241, and is used to periodically drive the mounting ring 220 to move up and down when the stirring shaft 213 drives the dissolving assembly to rotate through the mounting ring 220, so that the auxiliary spring 230 can periodically store and release force, and when the mounting ring 220 moves down to the lowest point, the angle between the two elastic plates is reduced, and the second elastic plate 243 is made to fit the bottom wall of the dissolving cylinder 210.

[0047] The auxiliary structure includes a plurality of auxiliary grooves 250. The plurality of auxiliary grooves 250 are evenly distributed along the circumference of the dissolving cylinder 210 and are arranged on the inner side wall of the dissolving cylinder 210. The plurality of auxiliary grooves 250 are connected end to end and surround a circle. One end of the mounting rod 241 close to the dissolving cylinder 210 is slidably matched with the auxiliary groove 250. The auxiliary groove 250 includes a force storage section 251, a grinding section 252, and a force release section 253. The force storage section 251 is tilted up and down. The grinding section 252 is horizontally arranged at the lower end of the force storage section 251. One end of the grinding section 252 close to the force storage section 251 is connected to the lower end of the force storage section 251. The force release section 253 is tilted up and down and is arranged on the side of the grinding section 252 away from the force storage section 251. The tilting direction of the force release section 253 is opposite to that of the force storage section 251, and the angle between the force release section 253 and the horizontal plane is greater than the angle between the force storage section 251 and the horizontal plane. The lower end of the force release section 253 is connected to the end of the grinding section 252 away from the force storage section 251. The stirring shaft 213 drives the mounting ring 220 to rotate, the mounting ring 220 drives the mounting rod 241 to rotate, and the mounting rod 241 drives the first elastic plate 242 and the second elastic plate 243 to rotate. When the mounting rod 241 slides to the force storage section 251, the force storage section 251 drives the mounting rod 241 to drive the mounting ring 220 to move downward. This allows the auxiliary spring 230 to accumulate force. When the mounting rod 241 slides to the grinding section 252, the second elastic plate 243 fits the bottom wall of the dissolving cylinder 210 to grind the flocculant on the bottom wall of the dissolving cylinder 210. When the mounting rod 241 slides to the force release section 253, the force release section 253 causes the auxiliary spring 230 to release force to drive the mounting rod 241 to drive the mounting ring 220 to move quickly.

[0048] In combination with the above embodiments, the use principle and working process of the utility model are as follows: When sewage treatment is performed, sewage is injected into the tank body 100 from the sewage inlet 110. Flocculant and water are added into the dissolving cylinder 210 to prepare a solution.

[0049] The dissolving motor is started to drive the stirring shaft 213 to rotate, the stirring shaft 213 drives the mounting ring 220 to rotate, the mounting ring 220 drives the mounting rod 241 to rotate, and the mounting rod 241 drives the first elastic plate 242 and the second elastic plate 243 to rotate. When the mounting rod 241 slides to the force storage section 251, the force storage section 251 drives the mounting rod 241 to drive the mounting ring 220 to move downward. The auxiliary spring 230 accumulates force. When the mounting rod 241 slides to the grinding section 252, the second elastic plate 243 and the bottom wall of the dissolving cylinder 210 are attached to grind the flocculant on the bottom wall of the dissolving cylinder 210. When the mounting rod 241 slides to the force release section 253, the force release section 253 releases the auxiliary spring 230 to drive the mounting rod 241 to drive the mounting ring 220 to move quickly.

[0050] When the mounting ring 220 moves down to the lowest point, the lower end of the second elastic plate 243 first abuts against the bottom wall of the dissolving cylinder 210, and a V-shaped gap is formed between the second elastic plate 243 and the bottom wall of the dissolving cylinder 210. As the mounting ring 220 moves down, the mounting rod 241 increases the downward pressure on the first elastic plate 242, and the first elastic plate 242 rotates around the mounting rod 241 to store force for the torsion spring 244, and to make the second elastic plate 243 and the bottom wall of the dissolving cylinder 210 fit together, so that the angle of the V-shaped gap between the second elastic plate 243 and the bottom wall of the dissolving cylinder 210 gradually decreases, providing shear force for the flocculant to be crushed, and at the same time, squeezing and grinding part of the flocculant at the bottom of the dissolving cylinder 210, and making part of the flocculant flow upward along the first elastic plate 242, thereby promoting the up and down flow of the flocculant and promoting the dissolution of the flocculant. When the mounting ring 220 moves down to the lowest point, the angle between the two elastic plates decreases, and the second elastic plate 243 accumulates force. When the auxiliary spring 230 releases force to drive the mounting ring 220 to move up, the torsion spring 244 releases force, driving the first elastic plate 242 to rotate toward the bottom wall of the dissolving cylinder 210, and the second elastic plate 243 releases force to rotate toward the bottom wall of the dissolving cylinder 210, so as to form convection for the ground flocculant on the bottom wall of the dissolving cylinder 210, thereby promoting the dissolution of the flocculant. After the flocculant is fully dissolved, it is discharged into the tank body 100 through the discharge pipe 211, and the stirring motor is started for stirring, thereby improving the effect of sewage treatment. In actual use, the flocculant can be pre-dissolved multiple times and added to the tank body 100 in batches for sewage treatment. By preparing the flocculant solution in advance, it is more conducive to the rapid dissolution of the flocculant than the traditional method of directly adding it to the sewage, thereby improving the effect of sewage treatment.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flocculation stirring tank for sewage treatment, characterized in that: It comprises a tank body; the tank body is arranged vertically, and a sewage inlet and a feed inlet are arranged at the upper end; a stirring assembly is arranged in the tank body; and a dissolving device is arranged in the feed inlet of the tank body; The dissolving device comprises a dissolving cylinder; the axis of the dissolving cylinder is vertically arranged and fixed at the feed port; the upper end of the dissolving cylinder is provided with a feeding port, and the lower end is provided with a discharge pipe; the discharge pipe extends into the tank body; a stirring shaft is coaxially arranged in the dissolving cylinder; the upper end of the stirring shaft is rotatably mounted on the upper end of the dissolving cylinder; a mounting ring is slidably arranged at the lower end of the stirring shaft; an auxiliary spring is connected between the mounting ring and the stirring shaft; a dissolving assembly is arranged on the mounting ring; The dissolving assembly includes a mounting rod, a first elastic plate, a second elastic plate, and an auxiliary structure; the mounting rod is arranged radially along the mounting ring, the mounting rod is arranged between the outer wall of the mounting ring and the inner wall of the dissolving cylinder, and one end of the mounting rod close to the mounting ring is fixedly connected to the mounting ring; The length direction of the first elastic plate is arranged along the radial direction of the mounting ring; the first elastic plate is arranged up and down tilted; the second elastic plate is arranged below the first elastic plate; the length direction of the second elastic plate is arranged along the radial direction of the mounting ring; one end of the two elastic plates is fixed, and the other ends are separated from each other to form a V-shape with the small end facing the bottom of the dissolving cylinder; the two elastic plates are distributed on the upper and lower sides of the mounting rod; the upper end of the first elastic plate is rotatably mounted on the mounting rod through a rotating sleeve, and a torsion spring is connected between the rotating sleeve and the mounting ring; The auxiliary structure is arranged between the dissolving cylinder and the mounting rod, and is used to periodically drive the mounting ring to move up and down when the stirring shaft drives the dissolving component to rotate through the mounting ring, so that the auxiliary spring can periodically store and release force, and when the mounting ring moves down to the lowest point, the angle between the two elastic plates is reduced, and the second elastic plate is made to fit the bottom wall of the dissolving cylinder.

2. The flocculation stirring tank for sewage treatment according to claim 1, characterized in that: The second elastic plate is arranged to be tilted up and down; the first elastic plate and the second elastic plate have the same tilting direction.

3. A flocculation stirring tank for sewage treatment according to claim 2, characterized in that: The lower end of the first elastic plate is in an arc shape concave toward the second elastic plate.

4. The flocculation stirring tank for sewage treatment according to claim 3, characterized in that: The fixed connection ends of the first elastic plate and the second elastic plate are in a blade shape.

5. The flocculation stirring tank for sewage treatment according to claim 4, characterized in that: The auxiliary structure includes a plurality of auxiliary grooves; the plurality of auxiliary grooves are evenly distributed on the inner wall of the dissolving cylinder along the circumference of the dissolving cylinder; the plurality of auxiliary grooves are connected end to end and surround a circle; one end of the mounting rod close to the dissolving cylinder is slidably matched with the auxiliary groove; The auxiliary tank includes a force storage section, a grinding section, and a force release section; The power storage section is set up with an up and down tilt; The grinding section is horizontally arranged at the lower end of the power storage section; one end of the grinding section close to the power storage section is connected to the lower end of the power storage section; The force release section is arranged to be inclined up and down on the side of the grinding section away from the force storage section; the inclination direction of the force release section is opposite to the inclination direction of the force storage section, and the angle between the force release section and the horizontal plane is greater than the angle between the force storage section and the horizontal plane; the lower end of the force release section is connected to the end of the grinding section away from the force storage section.

6. A flocculation stirring tank for sewage treatment according to any one of claims 1 to 5, characterized in that: The discharge pipe is provided with a solenoid valve.

7. The flocculation stirring tank for sewage treatment according to claim 1, characterized in that: The stirring assembly comprises a stirring shaft; the stirring shaft is rotatably installed in the tank body; a stirring blade is fixed on the stirring shaft; a stirring motor is connected to the upper end of the stirring shaft; and the stirring motor is fixed on the upper end of the tank body.

8. The flocculation stirring tank for sewage treatment according to claim 1, characterized in that: The tank body is provided with a water outlet and a mud outlet; the water outlet is higher than the mud outlet; the mud outlet is arranged at the lower end of the tank body; and a mud pump is connected to the mud outlet.

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