CN206214836U - A kind of thickener flocculation reaction device - Google Patents

Abstract

The utility model relates to a thickener flocculation reaction device, which belongs to the technical field of thickeners. The utility model mainly solves the technical problems in the prior art that the flocculation effect is poor, the flocculation reaction is insufficient, and the suspension after the reaction cannot be uniformly diffused into the concentration pool. The utility model is realized through the following technical solutions: a thickener flocculation reaction device, which includes an external feeding well, an internal feeding well, a flocculant adding pipe and a feeding pipe, wherein: the external feeding well is a cylinder The upper part of the external feeding shaft wall is uniformly provided with several dilution ports, and the bottom of the external feeding shaft is provided with an inverted trumpet-shaped discharge port; the flocculant adding pipe is arranged above the external feeding well; The inner feed well is composed of a cylindrical feed tube, a cone splitter and a bottom plate, and the inner feed well is set at the center of the outer feed well; the feed pipe passes through the wall of the outer feed well and the inner feed well is cylindrical Tangential connection of the feed barrel.

Description

A concentrator flocculation reaction device

technical field

The utility model belongs to the technical field of concentrators, in particular to a flocculation reaction device for a concentrator.

Background technique

Thickener is a kind of continuous working thickening and clarification equipment, suitable for dehydration of concentrate and tailings in wet beneficiation operation, and also widely used in coal, metallurgy, environmental protection and other industries.

Because the particle size of the material processed by the thickener is small, the viscosity is high, and the sedimentation speed is slow, it is usually necessary to add a flocculant to the pulp to increase the sedimentation speed of the tailings. The quality of the pulp flocculation directly affects the solidification of the thickener. liquid separation efficiency.

At present, the structure of the feed well of the concentrator is various, but there is still a long way from the ideal and high efficiency, and there are many shortcomings: 1. The fluid flow rate is high, the steady flow effect is weak, the disturbance to the flocculated pulp is large, and it is easy to be damaged. Formed flocs; 2. There is no dilution system in the feed well, and the flocculant and pulp are mixed unevenly, which easily leads to insufficient flocculation reaction; 3. The suspension after flocculation reaction cannot be evenly diffused to the thickening tank.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings of the prior art and provide a thickener flocculation reaction device to solve the problems of poor flocculation effect, insufficient flocculation reaction, and inability to evenly diffuse the suspension after the reaction in the feed well of the existing thickener. Technical problems of concentration ponds.

The utility model is achieved through the following technical solutions:

A thickener flocculation reaction device, which includes an external feed well, an internal feed well, a flocculant addition pipe and a feed pipe, wherein:

The external feeding well is a cylindrical shell, and the upper part of the external feeding well is uniformly provided with a number of dilution ports, and the bottom of the external feeding well is provided with an inverted trumpet-shaped discharge port;

The flocculant addition pipe is arranged above the external feeding well, and the flocculant addition pipe is composed of an interconnected conveying pipe, an annular distribution pipe and several branch pipes, the conveying pipe is vertically arranged at the upper end of the annular distribution pipe, and the several The branch pipes are uniformly and vertically arranged at the lower end of the annular distribution pipe;

The internal feeding well is composed of a cylindrical feeding barrel, a cone splitter and a bottom plate, the bottom plate is arranged at the bottom of the cone splitter, the upper end of the cone splitter is connected with the bottom end of the cylindrical feeding barrel, and the cone A number of diverter ports are uniformly arranged on the side wall of the diverter, the inner feed well is set at the center of the outer feed well, and there is a gap between the large end of the cone diverter and the inner wall of the outer feed well;

The feed pipe passes through the wall of the outer feed shaft and is connected to the tangential direction of the cylindrical feed barrel of the inner feed shaft.

Further, the diameter of the annular distribution pipe of the flocculant adding pipe is smaller than the diameter of the external feeding well.

Compared with the existing technology, since there are several dilution ports on the external feeding well, the original feeding concentration can be reduced to reach the optimal concentration of flocculation, which can effectively improve the flocculation effect; the conveying pipe, annular distribution pipe and several The setting of branch pipes, as well as the setting of cylindrical feeding barrel and cone splitter in the internal feeding well, can realize the uniform mixing of flocculant and pulp; this device does not need any external power, saving energy consumption; it is fully mixed in the dilution mixing area After the final suspension enters the flocculation reaction zone, the water flow speed slows down and the energy level decreases, which is conducive to the flocculation reaction between the solid particles and the flocculant to form a larger flocculation group, and the suspension with sufficient flocculation reaction comes out from the external feeding well. The feed port flows into the concentrator evenly in the radial direction, avoiding impact on the sediment layer in the concentrator and achieving the maximum settling velocity. Compared with the background technology, the utility model has the advantages of simple structure, low energy consumption, good flocculation effect and the like.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of the utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

As shown in Figures 1 and 2, a concentrator flocculation reaction device includes an external feed well 1, an internal feed well 2, a flocculant addition pipe 3 and a feed pipe 4, wherein:

The external feeding well 1 is a cylindrical cylinder, and the upper part of the external feeding well 1 wall is evenly provided with a number of dilution ports 1-1, and the bottom of the external feeding well 1 is provided with an inverted trumpet-shaped discharge port 1- 2;

The flocculant addition pipe 3 is arranged above the external feeding well 1, and the flocculant addition pipe 3 is composed of an interconnected delivery pipe 3-1, an annular distribution pipe 3-2 and several sub-pipes 3-3, and the delivery pipe 3 -1 is vertically arranged at the upper end of the annular distribution pipe 3-2, and the plurality of branch pipes 3-3 are evenly arranged vertically at the lower end of the annular distribution pipe 3-2;

The internal feeding well 2 is composed of a cylindrical feeding cylinder 2-1, a cone flow divider 2-2 and a base plate 2-3, the base plate 2-3 is arranged at the bottom of the cone flow divider 2-2, and the cone flow divider The upper end of the device 2-2 is connected with the bottom end of the cylindrical feeding cylinder 2-1, and a number of diversion ports 2-4 are evenly arranged on the side wall of the cone flow divider 2-2, and the internal feeding well 2 is arranged on the external feeding The center of the well 1, and there is a gap between the large end of the cone flow divider 2-2 and the inner wall of the external feeding well 1;

The feed pipe 4 passes through the wall of the outer feed well 1 and is connected to the tangential direction of the cylindrical feed barrel 2-1 of the inner feed well.

Above the bottom plate 2-3, a dilution and mixing zone is formed between the outer wall of the inner feed well 2 and the inner wall of the outer feed well 1, and a flocculation reaction zone is formed under the bottom plate 2-3.

The diameter of the annular distribution pipe 3 - 2 of the flocculant adding pipe 3 is smaller than the diameter of the external feeding well 1 .

Working process and principle of the present utility model:

As shown in Figures 1 to 2, during use, the slurry enters the inside of the cylindrical feeding barrel 2-1 of the inner feeding well 2 from the feeding pipe 4, and along the tangential line in the cylindrical feeding barrel 2-1 The direction rotates and flows downward, then enters the lower cone splitter 2-2, and diffuses upwards from several split flow ports 2-4 uniformly arranged on the side wall of the cone splitter 2-2 to flow into the dilution mixing zone; at the same time, it enters the dilution The mixing zone also includes the supernatant that flows in through the dilution port 1-1 on the upper part of the external feed well and the chemical flocculant added through the flocculant addition pipe 3. The slurry forms a strong turbulent flow state in the dilution mixing zone, so that the three liquids are fully mixed; the fully mixed suspension enters the flocculation reaction zone through the gap between the inner and outer feeding wells, and the space of the flocculation reaction zone is large, and the turbulence of the water flow is weakened. , the water flow velocity decreases and the energy level decreases, which is beneficial to the flocculation reaction between solid particles and flocculants, forming larger flocs and improving the settlement effect of solid particles. At the same time, due to the reduction of water flow energy level, the water flow will be gentle Diffusion from the outlet 1-2 at the bottom of the external feeding well into the thickening tank, so that the water flow is evenly distributed in the radial direction, and the flocculation reaction of the thickener is realized.

The utility model can be implemented in various forms without departing from the spirit or essence of the invention, so it should be understood that the above-mentioned embodiments are not limited to the foregoing details, but should be interpreted broadly within the scope defined by the claims, and therefore fall into the scope of the claims. Changes and modifications within the equivalent range thereof shall be covered by the claims.

Claims (2)

1. A concentrator flocculation reaction device, which comprises an external feed well (1), an internal feed well (2), a flocculant addition pipe (3) and a feed pipe (4), is characterized in that: The external feeding well (1) is a cylindrical shell, and the upper part of the external feeding well (1) cylinder wall is uniformly provided with several dilution ports (1-1), and the bottom of the external feeding well (1) is provided with an inverted Trumpet-shaped outlet (1-2); The flocculant addition pipe (3) is arranged above the external feeding well (1), and the flocculant addition pipe (3) is composed of an interconnected delivery pipe (3-1), an annular distribution pipe (3-2) and several branch pipes (3-3), the conveying pipe (3-1) is vertically arranged on the upper end of the annular distribution pipe (3-2), and the plurality of branch pipes (3-3) are evenly arranged vertically on the annular distribution pipe (3-2). -2) the lower end; The internal feeding well (2) is composed of a cylindrical feeding cylinder (2-1), a cone flow divider (2-2) and a bottom plate (2-3), and the bottom plate (2-3) is arranged on the cone flow divider The bottom of the device (2-2), the upper end of the cone flow divider (2-2) is connected with the bottom end of the cylindrical feeding cylinder (2-1), and the cone flow divider (2-2) is evenly arranged on the side wall There are several diverter ports (2-4), the inner feed well (2) is arranged in the center of the outer feed well (1), and the big end of the cone splitter (2-2) is in contact with the inner wall of the outer feed well (1) there is a gap between The feed pipe (4) passes through the wall of the outer feed well (1) and is connected to the tangential direction of the cylindrical feed barrel (2-1) of the inner feed well. 2. A thickener flocculation reaction device according to claim 1, characterized in that: the diameter of the annular distribution pipe (3-2) of the flocculant addition pipe (3) is smaller than that of the external feed well (1) diameter.