CN2897388Y - Cross-flow vortex solid-liquid separation device - Google Patents

Abstract

The cross-flow vortex solid-liquid separation device is characterized in that a cylindrical swirl chamber is set, and the swirl chamber is divided into an inner chamber and an outer chamber on the same axis by a cylindrical retaining net. The bottom of the chamber is connected to the mud collection chamber, the water inlet pipe is arranged tangentially along the cylindrical swirl chamber, the water inlet is located above the inner chamber and communicated with the inner chamber, and the incoming water flows into the inner chamber according to the tangential direction; A tangential overflow drain pipe is provided, and the drain pipe communicates with the outer chamber; the bottom of the mud collecting chamber communicates with a mud discharge pipe. The utility model has high efficiency, less investment, low energy consumption, small land occupation, convenient operation and management, is used for pretreatment of water and waste water, and can complete processes such as filtration and sand settling in one step.

Description

Cross-flow vortex solid-liquid separation device

Technical field:

The utility model relates to a solid-liquid separation device, more specifically a device used in water or waste water pretreatment technology to realize the purpose of intercepting suspended matter in water and removing sand.

Background technique:

my country is a water-scarce country, and the per capita water resources are less than 1/4 of the world's average level. For sewage treatment, the current national sewage treatment rate is less than 40%, and the sewage reuse rate is less than 5%. Sewage discharge will inevitably Cause water environment pollution, make drinking water source quality worse. However, water and sewage treatment not only requires huge investment in the construction of water treatment plants, but also has high daily operating costs. Therefore, seeking and developing high-efficiency, low-consumption, and low-investment water treatment processes and devices is an inevitable way to promote the coordinated development of economic development and environmental protection. At present, the common process method of water and wastewater pretreatment is coarse grid → sump → lift pump → fine grid or screen → grit chamber. The process is long, requires a lot of equipment, consumes a lot of energy, requires a lot of land, and is difficult to operate and manage, which limits the speed of water treatment to a certain extent.

Invention content:

The technical problem to be solved by the utility model is to avoid the problems existing in the above-mentioned prior art, and to provide a high efficiency, low investment, low energy consumption, small footprint, convenient operation and management, used for water and waste water pretreatment, capable of Cross-flow vortex solid-liquid separation device that completes filtration, sand settling and other processes in one step

The technical solution adopted by the utility model to solve technical problems is:

The structural features of the utility model are:

A cylindrical swirl chamber is set up, and the swirl chamber is divided into an inner chamber and an outer chamber on the same axis by a cylindrical retaining net. The tangential setting of the cylindrical swirl chamber, the water inlet is located above the inner chamber and communicates with the inner chamber, and the incoming water flow is injected into the inner chamber tangentially; a tangential overflow drain pipe is set, and the drain pipe is connected with the inner chamber The outer chamber is connected; the bottom of the mud collecting chamber is connected to the mud discharge pipe.

The utility model realizes interception and desanding of suspended solids in the water treatment process in one step by way of cross-flow vortex.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The utility model simultaneously removes sand while efficiently intercepting suspended matter in water, and plays the role of purifying multiple devices and facilities of the grid (or screen) and grit chamber in the traditional process, saving investment in water treatment construction , operating costs and floor space, reducing the difficulty of operation and management;

2. The utility model adopts cross-flow filtration, which can intercept suspended impurities much smaller than the mesh aperture, while the traditional grid can only intercept suspended impurities larger than the gap between the grid bars, and the interception efficiency is greatly improved;

3. In the device of the utility model, the fluid passes over the grid from the side, which can play the role of scouring the grid, and will not cause partial blockage of the filter, so that the filter can maintain efficient operation;

4. The utility model adopts the hydrocyclone desanding technology, the hydraulic retention time is greatly shortened, the volume of the device is greatly reduced, and the investment and land occupation are reduced;

5. There is no transmission equipment in the whole device of the utility model, which greatly reduces the operation cost and operation management difficulty, and the service life of the device is greatly extended, and the operation failure rate and maintenance cost are minimized;

6. The outlet water of the utility model flows out tangentially through the wall of the swirl chamber, which reduces the disturbance of the water flow in the swirl chamber, reduces resistance loss and operating energy consumption;

7. The device of the utility model has a compact structure, and the circular structure reduces the requirement on the strength of the material, so it is more flexible in selecting processing materials.

Description of drawings:

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model.

Fig. 2 is a schematic diagram of the top view structure of the utility model.

Symbols in the figure: 1 retaining net, 2 inner chamber, 3 outer chamber, 4 mud collecting chamber, 5 water inlet pipe, 6 water inlet, 7 drain pipe, 8 mud discharge pipe.

The utility model will be further described below by way of specific embodiments:

Detailed ways:

Referring to the accompanying drawings, this embodiment sets a cylindrical swirl chamber, which is divided into an inner chamber 2 and an outer chamber 3 on the same axis by a cylindrical retaining net 1, and the bottom of the inner chamber 2 Undertake the mud collection chamber 4, the water inlet pipe 5 is arranged along the tangential direction of the cylindrical cyclone chamber, the water inlet 6 is located above the inner chamber 2, and communicates with the inner chamber 2, and the incoming water flow is injected into the inner chamber according to the tangential direction 2. A tangential overflow drain pipe 7 is provided, and the drain pipe 7 communicates with the outer chamber 3; the bottom of the mud collection chamber 4 communicates with the mud discharge pipe 8.

The technical parameters of the utility model device can be set to:

Hydraulic retention time: 5～50 seconds

Water inlet head: 0.5~5 meters

Retention mesh diameter: 2~10 mm.

The main body of the device, including the mud collecting chamber and the swirl chamber, can be made of steel plate or glass fiber reinforced plastic, or reinforced concrete, and the retaining net can be made of stainless steel.

By adopting the utility model, the pretreatment process of water or waste water can be simplified as follows: coarse grid → sump → lifting pump → device of the utility model.

Claims (1)

1. The cross-flow vortex type solid-liquid separation device is characterized in that a cylindrical swirl chamber is set, and the swirl chamber is divided into coaxial inner chambers (2) by a cylindrical retention net (1) ) and the outer chamber (3), the bottom of the inner chamber (2) accepts the mud collection chamber (4), the water inlet pipe (5) is arranged along the tangential direction of the cylindrical swirl chamber, and the water inlet (6) is located at Above the inner chamber (2), and communicated with the inner chamber (2), the incoming water flow is injected into the inner chamber (2) tangentially; a tangential overflow drain pipe (7) is provided, and the drain pipe (7) It communicates with the outer chamber (3); the bottom of the mud collecting chamber (4) communicates with the mud discharge pipe (8).