CN204661374U - A kind of Multi-stage stirring coagulation device - Google Patents

Abstract

The utility model provides a multi-stage stirring coagulation device, comprising: a coagulation tank, a water inlet pipe, and an agitator. The blades are distributed axially symmetrically along the stirring shaft, and the radius of the multistage paddle blades gradually decreases along the direction of water flow. The multi-stage coagulation device has an agitator comprising multi-stage blades. When the agitator stirs, the multi-stage blades form a multi-layer stirring layer, and the radius of the multi-stage blades gradually decreases along the direction of water flow so that the agitator along the direction of water flow The degree of stirring intensity gradually decreases, so that the stirring is violent when the water flow just enters the coagulation tank, so that the coagulant and the water body are evenly mixed to form flocs, and then the degree of stirring is reduced, so that the formed flocs can coagulate with each other into large flocs The particles settle to the bottom of the pool, so as to achieve better coagulation effect.

Description

A multi-stage stirring coagulation device

technical field

The utility model relates to the field of sewage treatment, in particular to a multi-stage coagulation device for better realizing coagulation, flocculation and layered treatment.

Background technique

The coagulation phenomenon refers to the coagulation phenomenon of fine particles. Coagulation and flocculation are collectively referred to as coagulation. Coagulation refers to adding a chemical coagulant to the water, so that the chemical coagulant and the water body are mixed quickly and uniformly to form flocs; It is effectively removed by gravity sedimentation. The above process is the principle of coagulation and sedimentation, and the quality of the coagulation effect determines the removal effect of suspended solids.

Coagulation and flocculation are two different concepts. At present, the common practice is to divide the two processes into two different spaces. For small-scale water treatment devices, it is not easy to optimize the structure of the two spaces. It does not make the equipment too scattered, and the degree of integration is not high.

Utility model content

The technical problem to be solved by the utility model is to provide a multi-stage stirring coagulation device, including: a coagulation tank, a water inlet pipe, and an agitator, the agitator includes an agitating shaft, and a multi-stage slurry arranged along the agitating shaft The blades of each stage are distributed axially symmetrically along the stirring shaft, and the radius of the blades of multiple stages gradually decreases along the direction of water flow. The multi-stage coagulation device has an agitator comprising multi-stage blades. When the agitator stirs, the multi-stage blades form a multi-layer stirring layer, and the radius of the multi-stage blades gradually decreases along the direction of water flow so that the agitator along the direction of water flow The agitation intensity gradually decreases, so that the agitation is violent when the water flow just enters the coagulation tank, so that the coagulant and the water body are evenly mixed to form flocs, and then the agitation degree is reduced, so that the formed flocs can coagulate with each other into large flocs The particles settle to the bottom of the pool, so as to achieve better coagulation effect.

In order to achieve above-mentioned technical effect, the concrete technical scheme that the utility model provides is:

A multi-stage stirring coagulation device, comprising: a coagulation tank; a water inlet pipe extending into the bottom of the coagulation tank to allow water to move upward from the bottom of the coagulation tank; an agitator, the agitator Placed in the coagulation tank, the agitator includes a stirring shaft and multi-stage blades arranged along the stirring shaft, and the blades of each stage are distributed axially symmetrically along the stirring shaft, and the multi-stage The radius of the blade gradually decreases along the direction of water flow.

As a preference of the above solution, the paddle is arranged on the stirring shaft through a support rod.

As a preference of the above solution, the distance from the outermost end of the multi-stage paddle to the stirring shaft gradually decreases along the water flow direction.

As a preference of the above solution, the distances from the outermost ends of the paddle blades to the stirring shaft in multiple stages are the same.

As a preference of the above solution, the two ends of the support rod are respectively arranged on the opposite surfaces of the blades of each stage.

As a preference of the above solution, the two ends of the support rod are respectively arranged on the side surfaces of the blades of each stage.

As a preference of the above solution, the two ends of the support rod are respectively arranged in the middle of the opposite surfaces of the blades of each stage.

As a preference of the above solution, support rods are provided on both sides of the paddles at each stage.

Description of drawings

Fig. 1 is the structural representation of embodiment 1 of a kind of multi-stage coagulation device provided by the utility model;

Fig. 2 is the structural representation of agitator in embodiment 1;

Fig. 3 is a kind of structural representation that paddle blade is connected with support bar;

Fig. 4 is another schematic diagram of the structure that the paddle is connected to the support rod;

Fig. 5 is a kind of structural representation of the stirrer of embodiment 2;

Fig. 6 is another kind of structural representation of the stirrer of embodiment 2;

Fig. 7 is a kind of structural representation of the agitator of embodiment 3;

FIG. 8 is another structural schematic diagram of the stirrer in Example 3. FIG.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

In the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or It is detachably connected, set, or integrally connected, set. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Example 1

As shown in Figure 1 and Figure 2, the present embodiment provides a multi-stage stirring coagulation device, including: a coagulation tank 1; a water inlet pipe 2, and the water inlet pipe 2 extends into the bottom of the coagulation tank 1 so that The water flow moves upwards from the bottom of the coagulation tank; the agitator 3, the agitator is placed in the coagulation tank, the agitator includes a stirring shaft 301, a multistage paddle 302 arranged along the stirring shaft, each The paddles 302 in each stage are distributed axisymmetrically along the stirring shaft, and the radius r of the paddles in multiple stages decreases gradually along the direction U of water flow.

The working principle of a multi-stage stirring coagulation device provided in this embodiment is as follows: the water body enters the bottom of the coagulation tank 1 from the water inlet pipe 2, the agitator 3 starts to rotate under the drive of the motor 4, and the paddle blades that first contact the water body The radius is larger, and the contact area with the water body is larger, so the stirring is more violent, and the coagulation process is carried out, so that the coagulant and the water body are mixed evenly to form flocs; the radius of the paddle blade gradually decreases during the upward process of flocs. Therefore, the violent stirring process is weakened, making it easier for the flocs to combine with each other to form larger floc particles, and thus rely on their own gravity to sink to the bottom of the tank to complete the coagulation process.

Example 2

As shown in Figures 3-6, the difference between this embodiment and Embodiment 1 is the stirrer, which includes a stirring shaft 301, a multi-stage paddle 302 arranged along the stirring shaft, and each stage of the paddle 302 are distributed axially symmetrically along the stirring shaft, and the radius r of the multi-stage paddles 302 gradually decreases along the direction of the water flow, and the paddles 302 are arranged on the stirring shaft through the support rod 5 .

Due to the large volume and weight of the agitator, in order to reduce the weight of the paddle and the resistance of the paddle during the stirring process, the paddle is set on the stirring shaft through the support rod, on the one hand to reduce the weight of the entire agitator, on the other hand It also reduces the contact area between the paddle and water so as to reduce the resistance during the stirring process.

Further, as shown in FIG. 5 and FIG. 6 , the distance R from the outermost end of the multi-stage paddle 32 to the stirring shaft 301 gradually decreases along the water flow direction. This makes the layering of the reaction process of coagulation and flocculation more obvious and enhances the coagulation effect. As shown in FIG. 3 , the two ends of the support rod 5 are respectively arranged in the middle of the opposite surfaces of the paddles of each stage, so that only one support rod is required for each stage of paddle.

As another embodiment, as shown in Fig. 4 and Fig. 6, the two ends of the support rods are respectively arranged on the side surfaces of the blades of each stage, and the two sides of the blades of each stage are A support rod is provided to make the fixing of the blade more firm.

Example 3

As shown in FIG. 7 and FIG. 8 , the difference between the stirring shaft in this embodiment and that in Embodiment 2 is that the distance R from the outermost end of the multi-stage paddle to the stirring shaft is the same. Although the distance from the blades of each stage to the stirring shaft is the same, the radius r of the blades along the water flow direction gradually decreases, that is, the contact area between the blades and the water gradually decreases along the water flow direction, and the intensity of the agitation changes from large to large. Small.

Further, as shown in FIG. 7 , the two ends of the support rods 5 are respectively arranged in the middle of the opposite surfaces of the paddles of each stage, so that only one support rod is required for each stage of paddles.

As another embodiment, as shown in Figure 8, the two ends of the support rod are respectively arranged on the side surfaces of the blades of each stage, and the two sides of the blades of each stage are provided with supports The rod makes the paddle blade more firmly fixed.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (8)

1. a Multi-stage stirring coagulation device, is characterized in that, comprising:

Coagulation basin;

Water inlet pipe, the bottom that described water inlet pipe stretches into described coagulation basin moves upward from the bottom of coagulation basin to make current;

Agitator, described agitator is placed in described coagulation basin, the multistage paddle that described agitator comprises stir shaft, arranges along described stir shaft, every grade of described blade all distributes axisymmetricly along described stir shaft, and the radius of multistage described paddle successively decreases gradually along the direction of current.

2. Multi-stage stirring coagulation device according to claim 1, is characterized in that, described paddle is arranged on described stir shaft by support bar.

3. Multi-stage stirring coagulation device according to claim 2, is characterized in that, the outermost end of multistage described paddle is successively decreased to the distance of described stir shaft gradually along described water (flow) direction.

4. Multi-stage stirring coagulation device according to claim 2, is characterized in that, the outermost end of multistage described paddle is identical to the distance of described stir shaft.

5. the Multi-stage stirring coagulation device according to claim 3 or 4, is characterized in that, the two ends of described support bar are arranged on the opposite face of every grade of described paddle respectively.

6. the Multi-stage stirring coagulation device according to claim 3 or 4, is characterized in that, the two ends of described support bar are arranged on the side of every grade of described paddle respectively.

7. Multi-stage stirring coagulation device according to claim 5, is characterized in that, the two ends of described support bar are arranged at the middle part of the opposite face of every grade of described paddle respectively.

8. Multi-stage stirring coagulation device according to claim 6, is characterized in that, two sides of every grade of described paddle are equipped with support bar.