CN213609939U - Multistage slurry concentration system - Google Patents

Abstract

The utility model relates to the technical field of construction site mud sedimentation and river and lake underwater sludge concentration, in particular to a multistage mud concentration system, which comprises two settling tanks, namely a first-stage settling tank and a second-stage settling tank; the top of the primary sedimentation tank is communicated and connected with the top of the secondary sedimentation tank through an overflowing water channel, and the overflowing water channel inclines towards the side of the secondary sedimentation tank; the top of one-level precipitation tank is equipped with the entry water course, the top of second grade precipitation tank is equipped with the overflow outlet pipe. The concentration system aims to improve the slurry concentration effect and efficiency, and simultaneously gives consideration to tail water treatment and reduction of investment.

Description

Multistage slurry concentration system

Technical Field

The utility model relates to a job site mud deposits and the submarine silt concentration technology field in rivers and lakes, concretely relates to multistage mud concentration system.

Background

During construction works, especially during earthwork and foundation construction, a large amount of construction mud is generated on the construction site. Construction mud is not allowed to be directly discharged into a municipal drainage system, and is mainly recycled after being deposited by arranging a brick (or concrete) sedimentation tank at present. The natural sedimentation speed is slow, and the sedimentation speed often cannot meet the requirement of slurry treatment. Sediment mud at the bottom of the sedimentation tank needs to be cleaned frequently, otherwise the water storage capacity of the sedimentation tank is influenced, and the use of the sedimentation tank is influenced when the sediment mud is cleaned. The brick (or concrete) sedimentation tank needs to be fixedly built, cannot be moved, and cannot be circulated, so that multiple new construction and dismantling are not beneficial to efficient treatment and resource saving.

In order to improve the water environment quality, silt at the bottom of rivers and lakes needs to be removed. Nowadays, the sludge cleaned by the cutter suction method is in a slurry state, and concentration treatment needs to be carried out before dehydration so as to improve the dehydration efficiency. Sludge concentration in the industry mainly adopts a centrifugal concentration principle, which has high requirements on the properties of sludge and has poor concentration effect of non-uniform components of sludge; and the centrifuge consumes electric energy during operation, which is not beneficial to energy conservation and environmental protection. In the industry, a towering sludge concentration tank is also adopted for sludge concentration, but the sludge is precipitated in the tank only by adopting a single precipitation principle, the concentration effect is poor, the water flow is discontinuous in the concentration process, and the efficiency is low; the concentration tank adopts a single passage, the treatment of dehydrated tail water cannot be considered, and a tail water treatment system is additionally arranged to increase the investment; and the tank body is integrally welded, so that the tank body is not easy to carry. For example: CN 107473555A-a sludge concentration tank.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage mud concentration system, this concentration system aim at improving mud concentration effect and efficiency, also compromise tail water treatment simultaneously, reduce and drop into.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multistage mud thickening system which characterized in that: comprises two settling tanks, namely a primary settling tank and a secondary settling tank; the top of the primary sedimentation tank is communicated and connected with the top of the secondary sedimentation tank through an overflowing water channel, and the overflowing water channel inclines towards the side of the secondary sedimentation tank; the top of one-level precipitation tank is equipped with the entry water course, the top of second grade precipitation tank is equipped with the overflow outlet pipe.

Furthermore, the settling tank comprises a cylindrical section and a conical section positioned below the cylindrical section, the upper end of the cylindrical section is provided with an annular overflow weir, and the primary settling tank is higher than the secondary settling tank; the bottom of the conical section is provided with a sludge discharge port, and a flange is arranged at the sludge discharge port and used for connecting a pipeline or a blind plate; the upper end of the overflow water outlet pipe is communicated and connected with the bottom of the annular overflow weir.

Further, the cylindrical section, the conical section and the annular overflow weir are connected through flanges.

Furthermore, a slurry return port and a slurry overflow port are arranged below the side wall of the conical section.

Furthermore, a plurality of supporting legs are uniformly welded on the conical section and used for supporting the whole sedimentation tank.

Furthermore, a steady flow barrel is arranged inside the sedimentation tank, the steady flow barrel and the sedimentation tank are concentrically arranged, the steady flow barrel is fixedly connected with the annular overflow weir through a support, the lower part of the steady flow barrel is horn-shaped, and the middle part of the steady flow barrel is uniformly provided with four square holes; one end of the inlet water channel is communicated with the upper end of the steady flow barrel in the primary sedimentation tank; and one end of the overflowing water channel is communicated and connected with an annular overflow weir at the upper part of the primary sedimentation tank, and the other end of the overflowing water channel is communicated and connected with a steady flow barrel inside the secondary sedimentation tank.

Furthermore, the system also comprises a dosing mixing device, wherein the dosing mixing device comprises a mixing box, the bottom of the mixing box is arranged at the top of the primary sedimentation tank through a bolt, and a water inlet pipe and a dosing pipe are arranged on the mixing box; one end of the inlet water channel is communicated with the mixing box, and the other end of the inlet water channel is communicated with the upper end of the steady flow barrel in the primary sedimentation tank.

Further, the inlet water channel is integrally bent.

Furthermore, the number of the water inlet pipes is two, the number of the overflow water outlet pipes is two, and the two overflow water outlet pipes are symmetrically arranged on two sides of the secondary sedimentation tank.

The beneficial effects of the utility model reside in that:

1. the utility model discloses integrated medicament flocculation technique, multistage sedimentation technique improve the concentrated effect of mud.

2. The utility model discloses utilize stationary flow bucket whirl technique, old age sludge adsorption technique, improve the concentrated efficiency of mud.

3. The utility model is provided with double channels, which can treat the dehydrated tail water while concentrating the slurry, thereby reducing the cost investment;

4. the utility model discloses the traditional chinese medicine mixes and realizes through flowing automatically, need not power stirring, and the operating energy consumption of reduction system.

5. The utility model discloses in all adopt bolt or flange joint, dismouting, transportation are convenient.

Drawings

Fig. 1 is a schematic diagram of a side-deployed arrangement (internal structure) of a multistage mud thickening system.

Fig. 2 is a schematic structural diagram of the settling tank.

FIG. 3 is a schematic top plan view of a multistage mud thickening system.

Fig. 4 is a schematic top view of a settling tank.

FIG. 5 is a schematic flow path diagram of a multi-stage mud thickening system.

In the figure: 1. a first-stage sedimentation tank; 2. a secondary sedimentation tank; 3. inlet channels (mixed channels); 4. a flow passage; 5. a mixing box; 6. a water inlet pipe; 7. an administration tube; 8. an overflow water outlet pipe; 9. a cylindrical section; 10. a conical section (mud bucket); 11. an annular overflow weir; 12. a flow stabilizing barrel; 13. a support leg; 14. a sludge discharge port; 15. a slurry return port; 16. a slurry overflow port; 17. and (4) a bracket.

Detailed Description

In order to better understand the present invention, the technical solution of the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-5, a multistage slurry concentration system comprises two settling tanks with the same structure and different heights, namely a first-stage settling tank 1 and a second-stage settling tank 2, wherein the first-stage settling tank 1 is higher than the second-stage settling tank 2.

As shown in fig. 2, the settling tank comprises a cylindrical section 9 and a conical section 10 (a mud settling hopper, an inverted cone is convenient for settling mud) positioned below the cylindrical section 9, an annular overflow weir 11 is arranged at the upper end of the cylindrical section 9, and the cylindrical section 9, the conical section 10 and the annular overflow weir 11 are connected through flanges, so that the settling tank is convenient to disassemble, assemble and transport; a plurality of supporting legs 13 are uniformly welded on the conical section 10, connecting plates are arranged at the bottom ends of the supporting legs 13, and the whole settling tank can be mounted and supported by anchoring on a solid foundation through bolts. The bottom of the annular overflow weir 11 of the secondary sedimentation tank 2 is communicated with an overflow water outlet pipe 8.

The bottom of the conical section 10 is provided with a sludge discharge port 14, and a flange is arranged at the sludge discharge port 14 and used for connecting a pipeline or a blind plate; a slurry return port 15 and a slurry overflow port 16 are arranged below the side wall of the conical section 10. Old settled sludge is pumped back into the conical section 10 through the slurry return port 15, and the settling efficiency is improved by utilizing the good adsorption performance of the old settled sludge. When the sludge is pumped from the sludge recirculation port 15, the sludge overflow port 16 begins to overflow the sludge, indicating that recirculation has been in place. Meanwhile, when the settling tank works, the thickness of settled sludge in the settling tank can be judged according to the concentration of the slurry flowing out from the slurry overflow port 16, and then whether the sludge discharge port 14 needs to be opened or not is determined according to the thickness of the settled sludge.

The inside stationary flow bucket 12 that is equipped with of settling cask, stationary flow bucket 12 arranges with the settling cask is concentric, through support 17 fixed connection between stationary flow bucket 12 and the annular overflow weir 11, the lower part of stationary flow bucket 12 is tubaeform, and the middle part evenly is equipped with four square holes to rivers form the whirl water distribution, utilize the whirl to deposit the principle and realize depositing fast.

The top of one-level gunbarrel 1 is equipped with entry water course 3 (mixed water course), along the slope of rivers direction to be convenient for rivers to form and flow automatically, reduce the energy consumption, the one end of entry water course 3 communicates with the upper end of stationary flow bucket 12 in the one-level gunbarrel 1. The top of the primary sedimentation tank 1 is communicated and connected with the top of the secondary sedimentation tank 2 through an overflow water channel 4, one end of the overflow water channel 4 is communicated and connected with an annular overflow weir 11 at the upper part of the primary sedimentation tank 1, and the other end of the overflow water channel 4 is communicated and connected with a steady flow barrel 12 in the secondary sedimentation tank 2; the overflowing water channel 4 inclines towards the secondary sedimentation tank 2 (water flows to the secondary sedimentation tank 2 along the overflowing water channel 4), so that the water flow is convenient to form self-flow, and the energy consumption is reduced; both ends of the overflowing water channel 4 are connected through bolts, and the assembly, disassembly and transportation are convenient. The cross sections of the inlet water channel 3 and the overflowing water channel 4 are rectangular, so that water flow is prevented from overflowing.

The system also comprises a dosing mixing device, wherein the dosing mixing device comprises a mixing box 5, the bottom of the mixing box 5 is installed at the top of the primary sedimentation tank 1 through bolts (the assembly, disassembly and transportation are convenient), and a water inlet pipe 6 and a dosing pipe 7 (used for feeding a flocculating agent) are arranged on the mixing box 5 and are collected to the mixing box 5; one end of the inlet water channel 3 is communicated with the mixing box 5, and the other end is communicated with the upper end of a steady flow barrel 12 in the primary sedimentation tank 1.

The inlet water channel 3 is integrally bent and arranged, and if the inlet water channel is integrally bent into a U shape, an arc shape and the like, a mixed water flow path is increased, and the liquid medicine mixing is facilitated.

The inlet tube 6 is two, forms the double channel, can compromise the processing to dehydration back tail water. The two overflow water outlet pipes 8 are symmetrically arranged on two sides of the secondary sedimentation tank 2 to match the flow of the double channels.

As shown in fig. 5, the working process, principle and effect are as follows: the process flow comprises the steps of mixing and reacting slurry and a medicament, performing primary precipitation, performing secondary deep precipitation and discharging water. The main function of the administration mixing device is to ensure that the slurry and the flocculating agent are fully mixed and reacted by using the long water flow path of the inlet water channel 3 (mixing water channel). The primary sedimentation tank 1 and the secondary sedimentation tank 2 mainly have the functions of finishing primary sedimentation-secondary deep sedimentation of slurry and realizing multi-stage sedimentation. Inside the settling tank, a built-in flow stabilizing barrel 12 is mainly used for manufacturing rotational flow, and then the rotational flow settling principle is utilized to realize rapid settling. A slurry return port 15 is formed at the bottom end of the settling tank, and the settling efficiency is enhanced by utilizing the good adsorbability of the returned aged slurry; a mud overflow port 16 is arranged in the conical section 10 (a mud settling hopper) and used for judging the surplus of mud in the conical section 10 so as to determine whether the flange mud discharge of the mud discharge port 14 needs to be opened or not. Inlet tube 6, overflow outlet pipe 8 all set up the double-channel to the realization can be collected the hydroextractor dehydration back tail water in step and merge the sediment concentration when carrying out the mud concentration.

The above description is only an example of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the present invention is not limited to the above description.

Claims (9)

1. A multistage mud thickening system which characterized in that: comprises two settling tanks, namely a primary settling tank (1) and a secondary settling tank (2); the top of the primary sedimentation tank (1) is communicated and connected with the top of the secondary sedimentation tank (2) through an overflow water channel (4), and the overflow water channel (4) inclines towards the secondary sedimentation tank (2); the top of one-level precipitation tank (1) is equipped with entry water course (3), the top of second grade precipitation tank (2) is equipped with overflow outlet pipe (8).

2. The multi-stage mud thickening system of claim 1, wherein: the settling tank comprises a cylindrical section (9) and a conical section (10) positioned below the cylindrical section (9), an annular overflow weir (11) is arranged at the upper end of the cylindrical section (9), and the primary settling tank (1) is higher than the secondary settling tank (2); the bottom of the conical section (10) is provided with a sludge discharge port (14), and a flange is arranged at the sludge discharge port (14) and used for connecting a pipeline or a blind plate; the upper end of the overflow water outlet pipe (8) is communicated and connected with the bottom of the annular overflow weir (11).

3. The multi-stage mud thickening system of claim 2, wherein: the cylindrical section (9), the conical section (10) and the annular overflow weir (11) are connected through flanges.

4. The multi-stage mud thickening system of claim 2, wherein: and a slurry return port (15) and a slurry overflow port (16) are arranged below the side wall of the conical section (10).

5. The multi-stage slurry thickening system of claim 2 or 3, wherein: a plurality of supporting legs (13) are uniformly welded on the conical section (10) and are used for supporting the whole sedimentation tank.

6. The multi-stage slurry thickening system of claim 2 or 3, wherein: a steady flow barrel (12) is arranged inside the sedimentation tank, the steady flow barrel (12) and the sedimentation tank are concentrically arranged, the steady flow barrel (12) is fixedly connected with the annular overflow weir (11) through a support (17), the lower part of the steady flow barrel (12) is horn-shaped, and four square holes are uniformly formed in the middle of the steady flow barrel (12); one end of the inlet water channel (3) is communicated with the upper end of a steady flow barrel (12) in the primary sedimentation tank (1); one end of the overflowing water channel (4) is communicated with an annular overflow weir (11) at the upper part of the primary sedimentation tank (1), and the other end of the overflowing water channel is communicated with a steady flow barrel (12) in the secondary sedimentation tank (2).

7. The multi-stage mud thickening system of claim 2, wherein: the system also comprises a dosing mixing device, wherein the dosing mixing device comprises a mixing box (5), the bottom of the mixing box (5) is installed at the top of the primary sedimentation tank (1) through a bolt, and a water inlet pipe (6) and a dosing pipe (7) are arranged on the mixing box (5); one end of the inlet water channel (3) is communicated with the mixing box (5), and the other end of the inlet water channel is communicated with the upper end of the steady flow barrel (12) in the primary sedimentation tank (1).

8. The multi-stage slurry thickening system of claim 7, wherein: the inlet water channel (3) is integrally bent.

9. The multi-stage slurry thickening system of claim 7, wherein: the two water inlet pipes (6) are arranged, the two overflow water outlet pipes (8) are also arranged, and the two overflow water outlet pipes are symmetrically arranged on two sides of the secondary sedimentation tank (2).

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