CN204619448U - The new-type concentrator of a kind of intervention method - Google Patents

Abstract

The utility model relates to a novel thickener with an intervention method, which comprises a shell, and at least one solid-liquid isolation layer is arranged in the shell, and the solid-liquid isolation layer includes a load-bearing structure that cooperates with the inner wall of the shell, and the load-bearing structure is filled with a The solid particles in the water phase or solution phase produce a solid medium for adsorption and/or flocculation. There are flow holes on the bearing structure. The solid medium cannot leak from the flow holes. A stirring structure for stirring the medium. The shell is also equipped with a feeding device, a supernatant liquid discharge port and a mud discharge port. Below the solid-liquid separation layer. It not only has high solid-liquid separation efficiency and good effect, but also has high-efficiency washing function. At the same time, it can realize that the solute content of the water phase in the underflow in the same thickener is different from that in the supernatant, which has a concentration difference, and can greatly reduce the amount of washing water.

Description

A new type of thickener with interventional method

technical field

The utility model relates to a solid-liquid separation device, in particular to a novel thickener with an intervention method.

Background technique

The thickener is widely used in various industries of industrial production, and its function is to separate the solid particles contained in the water phase from the water phase. For example: the mineral processing plant uses a thickener to separate the solid particles in the slurry from the water, and the sewage treatment plant uses a thickening tank to separate the sludge generated during the sewage treatment process from the water. The working principle of the thickener or sedimentation tank is to use the gravity sedimentation of solid particles in the water phase. Generally, the faster the sedimentation speed, the better the separation efficiency and effect. The particle size or particle size of the solid particles has a direct impact on its sedimentation speed. The larger the diameter, the faster the sedimentation speed, and the smaller the particle, the slower the sedimentation speed. In actual production, in order to improve the separation efficiency and effect, flocculants are often added to accelerate the settling speed of solid particles.

At present, the structure of the traditional thickener generally consists of the following parts: ① shell part, ② feeding system, ③ transmission part. The main function of the shell part is to carry the slurry and make the slurry settle and separate. It is designed with a feed port and a discharge port. The shell structure is generally cylindrical in the upper part and conical in the lower part. The upper part of the thickener is cylindrical. The interior of the cylindrical structure is sometimes designed with inclined tubes or inclined plates for steady flow. The feeding system is to feed the slurry with a suitable solid-to-liquid ratio into the shell, and add flocculant at the same time. The function of the transmission part is to drive the mud rake installed at the lower cone through mechanical rotation to rake the mud at the bottom. The thickener generally uses the upper part to add slurry, the settled and concentrated mud is discharged from the bottom, and the supernatant or water phase is discharged from the upper part. If washing is required, the washing water is generally added from the lower part or the bottom. Two or more thickeners can be superimposed to form a multi-stage thickener.

The working efficiency and effect of traditional thickeners depend entirely on the settling velocity of solid particles and the flocculation effect of flocculants. In order to ensure the separation efficiency and effect, there are restrictive requirements on the content of solid particles in the water phase or water body, and the solid content is generally required to be between 8% and 18%.

Utility model content

In order to overcome the deficiencies of the above-mentioned prior art, the purpose of this utility model is to provide a new type of thickener with interventional method, which not only has high solid-liquid separation efficiency and good effect, but also has efficient washing function. At the same time, it can realize that the solute content of the water phase in the underflow in the same thickener is different from that in the supernatant, which has a concentration difference, and can greatly reduce the amount of washing water.

The purpose of this utility model is achieved through the following technical solutions:

A new type of thickener by interventional method, comprising a shell, the shell is provided with at least one solid-liquid isolation layer, the solid-liquid isolation layer includes a load-bearing structure that cooperates with the inner wall of the shell, and the load-bearing structure is filled with A solid medium capable of adsorption and/or flocculation of solid particles in the water phase or solution phase, the carrying structure is provided with flow holes, the solid medium cannot leak from the flow holes, the carrying structure A stirring structure for stirring the solid medium is also arranged in the part. The housing is also equipped with a feeding device, a supernatant liquid discharge port and a mud discharge port. The bottom of the shell is located below the solid-liquid separation layer.

As an implementation structure of the present utility model, the bearing structure includes a cylinder and a porous plate or a screen arranged at the upper and lower ends of the cylinder, and the holes on the porous plate or the screen are the flow holes. The above-mentioned solid medium is filled in the space formed by the cylinder and the porous plate or screen.

As a further improvement of an implementation structure of the utility model, the cylinder is a larger cylindrical cylinder matching the inner diameter of the housing.

As another improvement of an implementation structure of the utility model, the cylinder body is a smaller cylindrical cylinder body with a smaller inner diameter than the housing, and the smaller cylindrical cylinder body passes through a conical cylinder body and the shell body. The inner walls are connected, the large end of the conical cylinder faces upwards and matches the inner diameter of the shell, and the small end faces downwards and connects with the upper end of the smaller cylindrical cylinder.

As another implementation structure of the utility model, the bearing structure includes two upper and lower porous plates or screens arranged in parallel and matched with the inner diameter of the housing, and the holes on the porous plates or screens are the In the flow hole, the solid medium is filled in the space formed by two upper and lower perforated plates or screens arranged in parallel and the inner wall of the housing.

Further, the lower part of the housing is provided with a washing water inlet, and the washing water inlet is located at the lower end of the solid-liquid separation layer.

Further, a slurry rake is provided at the inner bottom of the housing, and the slurry rake and the stirring structure are installed on the same transmission shaft, and the transmission shaft is driven by a motor provided outside the housing through a reducer.

Further, the feeding device is a feeding pipe, the transmission shaft runs through the solid-liquid isolation layer longitudinally, and the upper end of the transmission shaft passes through the feeding pipe.

Further, the solid medium is granular.

Further, the solid-liquid isolation layer is arranged in the middle of the housing.

Compared with the prior art, the beneficial effects of the utility model are as follows: ①The sedimentation separation efficiency is high and the effect is good. ② Make the processing capacity of the thickener independent of the settling velocity of solid particles in the water phase or solution phase. ③Compared with traditional thickeners, the supernatant has less solid content and the underflow has higher solid content. ④The supernatant in the same thickener contains high solute concentration, while the underflow water phase or solution phase contains low solute concentration. ⑤With high-efficiency washing function, it can save washing water consumption. ⑥ There is no restriction on the solid content in the water phase or water body, and the slurry with various liquid-solid ratios has good treatment efficiency and effect. ⑦The added solid medium effectively inhibits the turbulence or surge of the water phase or water body, which is beneficial to the sedimentation and separation.

Description of drawings

Fig. 1 is a structural schematic diagram 1 of a novel thickener by the intervention method of the present invention.

Fig. 2 is the structural schematic diagram II of the new type thickener of the intervention method of the utility model.

Fig. 3 is a schematic structural view of the solid-liquid separation layer in Fig. 1 .

Fig. 4 is another structural schematic diagram of the solid-liquid separation layer in Fig. 1 .

Detailed ways

Below in conjunction with the embodiment that accompanying drawing provides, the utility model is described in further detail.

As shown in Figures 1 and 2, a new type of thickener with interventional method includes a shell 1, the upper part of the shell 1 is cylindrical, and the bottom is conical. The housing 1 is provided with at least one solid-liquid isolation layer 2, the solid-liquid isolation layer 2 includes a load-bearing structure 21 that cooperates with the inner wall of the housing 1, and the load-bearing structure 21 is filled with solid particles capable of repelling solid particles in the water phase or solution phase. The solid medium 22 that produces adsorption and/or flocculation, the carrying structure 21 is provided with flow holes, the solid medium 22 cannot leak from the flow holes, and the carrying structure 21 is also provided with a stirring mechanism for the solid medium 22 Stir structure 23 . The shell 1 is also equipped with a feeding device 3, a supernatant liquid discharge port 4 and a mud discharge port 5. Set at the bottom of the housing 1 and below the solid-liquid separation layer 2.

As shown in Fig. 1, Fig. 2 and Fig. 3, as an implementation structure of the present invention, the carrying structure 21 includes a cylinder body 21a and a porous plate or screen 21b arranged at the upper and lower ends of the cylinder body 21a, the porous plate Or the hole 21c on the screen 21b is the flow hole, and the solid medium 22 is filled in the space formed by the cylinder 21a and the porous plate or the screen 21b.

As shown in FIG. 1 and FIG. 3 , as a further improvement of an implementation structure of the present invention, the cylinder 21 a is a relatively large cylindrical cylinder matching the inner diameter of the housing 1 .

As shown in Fig. 2, as another improvement of an implementation structure of the present utility model, the cylinder 21a is a smaller cylindrical cylinder with a smaller inner diameter than the housing 1, and the smaller cylindrical cylinder passes through a The conical cylinder 20a joins with the inner wall of the housing 1, the large end of the conical cylinder 20a faces upward and matches the inner diameter of the housing 1, and the small end of the conical cylinder 20a faces downward and connects with the upper end of the smaller cylindrical cylinder .

As shown in Figure 1 and Figure 4, as another implementation structure of the present invention, the carrying structure 21 includes two upper and lower parallel porous plates or screens 21b that match the inner diameter of the housing 1, the porous plates or The hole 21c on the screen 21b is the flow hole, and the solid medium 22 is filled in the space formed by the upper and lower two parallel perforated plates or the screen 21b and the inner wall of the housing 1 .

Further, the lower part of the housing 1 is provided with a washing water inlet 6 , and the washing water inlet 6 is located at the lower end of the solid-liquid separation layer 2 . When washing is needed, add washing water from the washing water inlet 6 to get final product.

Further, the inner bottom of the housing 1 is provided with a slurry rake 7, the slurry rake 7 and the stirring structure 23 are installed on the same transmission shaft 8, and the transmission shaft 8 is driven by the motor 9 arranged outside the housing 1 through the reducer. 10 drives. The feeding device 3 is a feeding tube, the transmission shaft 8 runs through the solid-liquid isolation layer 2 longitudinally, and the upper end of the transmission shaft 8 passes through the feeding tube.

Further, the solid-liquid isolation layer 2 is arranged in the middle of the housing 1, and its number may be one or more than two. The larger the number, the higher the solid-liquid separation efficiency and the better the separation effect in the housing.

Further, the solid medium 22 is granular, with an equivalent diameter between 1mm and 20mm. The selection principle of the solid medium is that it should have a certain strength, and it will not be pulverized and insoluble in water under the condition of mechanical stirring or raking. For example: plastic particles, ceramic balls, glass balls, particles made of solid waste produced in industrial production, ceramsite, etc. The solid medium can be one or a mixture of two or more materials that meet the selection principle. At the solid-liquid separation layer 2, the solid particles contained in the water phase will deposit in the pores between the solid media to form a material seal, and then form the concentration of soluble solutes in the water phase or solution phase at the upper and lower ends of the solid-liquid separation layer 2 Difference. A stirring or raking structure is installed in the solid-liquid isolation layer 2 to stir or rake the packing layer (ie solid medium), but the stirring speed or raking speed needs to be controlled and cannot be too fast. The function of stirring is: ① Under the action of mechanical force, the added granular solid medium has the effect of rubbing, rolling, stirring and dispersing the solid particles in the water phase or solution phase settled between its pores, and promotes the slurry in the mud. The water-soluble solute is dissolved in the water phase, and at the same time, the mass transfer efficiency of the washing process can be improved, and the washing water and energy consumption can be saved. ② It is beneficial for the solid particles settled here to pass through the assembly.

As mentioned above, the main function of the solid-liquid separation layer 2 is to control the flow direction or mass transfer of the aqueous or solution phase. That is to control the water phase or solution phase added to the slurry in the thickener so that it cannot or only a small amount pass through the solid-liquid separation layer 2, but flows out from the supernatant liquid discharge port 4. Only the solid particles added to the slurry in the thickener can pass through the solid-liquid separation layer 2 . Furthermore, a concentration difference of solutes contained in the upper and lower water phases or solution phases of the solid-liquid separation layer 2 is formed in the thickener to reduce the content of solutes in the underflow water phase of the thickener. At the same time, the solid-liquid separation layer 2 can strengthen the solid particles contained in the washing slurry, promote the mass transfer between the solid particles contained in the slurry and the solution, and make the solute contained in the solid particles convect mass transfer into the water phase or solution in phase. At the same time, the solid-liquid separation layer 2 has a stabilizing effect, which can prevent the sedimentation of solid particles in the water phase from being affected by the turbulence or disturbance or interference flow of the feed liquid in the thickener.

During operation, the slurry to be separated from solid and liquid is fed into the thickener through the feeding device 3, and the solid particles contained in the slurry pass through the solid-liquid isolation layer 2 and then settle to the bottom of the thickener to form a slurry. The slurry at the bottom of the thickener The outlet 5 is discharged, and the water phase or solution phase flows out from the supernatant outlet 4 located on the upper part of the thickener.

The technical principle of the utility model is: the surface of the granular solid medium added in the solid-liquid separation layer 2 has surface energy, surface tension and surface charge, and has an adsorption effect on solid particles in the water phase or solution phase. Under the action of surface adsorption, fine solid particles in the water phase or solution phase can be combined into larger particles or aggregates, thereby achieving the effect of promoting sedimentation and separation. At the same time, it can neutralize the surface charge of solid particles, greatly reduce their electrophoretic mobility, reduce or eliminate the repulsive force between particles, make the particles combine together to form a larger combination, and then promote the sedimentation process. The barrier effect formed by the cylindrical structural member of the solid-liquid separation layer 2 and/or the porous plate or screen and the solid medium can effectively suppress the turbulence, disturbance or interference flow of the material liquid in the thickener. In turn, it is beneficial to the sedimentation of solid particles in the water phase or solution phase. The granular solid medium added in the solid-liquid isolation layer 2 forms an isolation layer with the solid particles in the water phase or solution phase settled between its pores, and this isolation layer can effectively prevent the water phase added to the slurry of the thickener from Or the solution phase passes through, thereby forming the concentration difference of soluble solutes in the upper end of the solid-liquid separation layer 2 and the lower end of the water phase or the solution phase.

The above are only preferred embodiments of the present utility model, and should not limit the scope of the utility model implementation with this, that is, all simple equivalent changes made according to the utility model patent application scope and utility model description content and modification, all still belong to the scope covered by the utility model patent.

Claims (10)

1. A new type of thickener with interventional method, including a shell, characterized in that: At least one solid-liquid isolation layer is provided in the housing, and the solid-liquid isolation layer includes a bearing structure that cooperates with the inner wall of the housing. The solid medium for adsorption and/or flocculation, the carrying structure is provided with a flow hole, the solid medium cannot leak from the flow hole, and the carrying structure is also provided for the solid medium Stirring structure for stirring; The housing is also equipped with a feeding device, a supernatant liquid discharge port and a mud discharge port. The bottom of the shell is located below the solid-liquid separation layer. 2. A new type of thickener with interventional method according to claim 1, characterized in that: the bearing structure includes a cylinder and a porous plate or screen arranged at the upper and lower ends of the cylinder, and the porous plate or screen The holes on the net are the flow holes, and the solid medium is filled in the space formed by the cylinder and the porous plate or screen. 3. A new type of thickener with interventional method according to claim 2, characterized in that: the cylinder is a relatively large cylindrical cylinder matching the inner diameter of the shell. 4. A new type of thickener with interventional method according to claim 2, characterized in that: the cylinder is a smaller cylindrical cylinder with a smaller inner diameter than the shell, and the smaller cylindrical cylinder passes through A conical cylinder adjoins the inner wall of the housing, the large end of the conical cylinder faces upwards and matches the inner diameter of the housing, and the small end of the conical cylinder faces downwards and adjoins the upper end of the smaller cylindrical cylinder. 5. A new type of thickener with interventional method according to claim 1, characterized in that: the bearing structure includes two upper and lower parallel porous plates or screens matching the inner diameter of the housing, the The holes on the perforated plate or screen are the flow holes, and the solid medium is filled in the space formed by the upper and lower two parallel perforated plates or screens and the inner wall of the housing. 6. A new type thickener with interventional method according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the lower part of the housing is provided with a washing water inlet, and the washing water inlet is located in the solid-liquid isolation layer lower end. 7. A new type of thickener with interventional method according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the inner bottom of the housing is provided with a slurry rake, and the slurry rake and the stirring structure are installed on the same On the transmission shaft, the transmission shaft is driven by a motor located outside the casing through a reducer. 8. A new type thickener with interventional method according to claim 7, characterized in that: the feeding device is a feeding pipe, the transmission shaft runs through the solid-liquid isolation layer longitudinally, and the upper end of the transmission shaft Pass through the feed tube. 9. A new interventional thickener according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the solid medium is granular. 10. A new interventional thickener according to claim 1 or 2 or 3 or 4 or 5, characterized in that: the solid-liquid separation layer is arranged in the middle of the shell.