CN102614699A - Fixed vibrating curved surface fine grating - Google Patents

Abstract

The invention discloses a fixed vibrating curved surface fine grid, which comprises: a curved grid surface made of a special stainless steel wedge-shaped steel bar through precision processing; a low-amplitude, high-frequency electromagnetic vibration device; a water distribution tank is arranged on the top; A flexible pressure plate is provided on the grid surface; a water inlet and a vent are provided on the water distribution tank; a water collection tank and a water outlet are provided at the bottom of the curved grid surface. The fixed vibrating surface fine grid adds a low-amplitude, high-frequency electromagnetic vibration device, so that the slope of the grid surface can be smaller than that of the ordinary curved surface grid. The same water passing area can increase the efficiency by nearly 50%, increase the processing capacity, and save operation. cost.

Description

Fixed vibrating surface fine grid

technical field

The invention relates to a curved fine grid in sewage treatment equipment, in particular to a fixed vibrating curved fine grid.

Background technique

At present, in the sewage pretreatment process of industrial wastewater and small urban sewage treatment plants, curved surface fine grids are generally used to separate grid residue and sewage in sewage, because this equipment has the characteristics of low investment and no power consumption, but the sewage composition Complexity and high liquid surface tension lead to easy clogging of curved fine grids, requiring a flushing system, which is expensive, cumbersome to operate, and high moisture content in screening residues, which makes subsequent treatment difficult.

Contents of the invention

Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a fixed vibrating curved surface fine grid in order to overcome the shortcomings of the above-mentioned curved surface fine grid, which has high slag-water separation efficiency, is not easy to be blocked, and saves energy. investment advantages.

The technical scheme of the present invention is realized in the following way: a fixed vibrating curved surface fine grid, including: a curved grid surface made of a special stainless steel wedge-shaped steel bar through precision processing; a low-amplitude, high-frequency electromagnetic vibration device; a top device There is a water distribution tank; a flexible pressure plate is provided on the curved grid surface; a water inlet and a vent are provided on the water distribution tank; a water collection tank and a water outlet are provided at the bottom of the curved grid surface.

The inlet and outlet and the vent port are respectively provided with flanges, and the screw connections of the flanges are sealed by sealing gaskets.

The fixed vibrating surface fine grid adds a low-amplitude, high-frequency electromagnetic vibration device, so that the slope of the grid surface can be smaller than that of the ordinary curved surface grid. The same water passing area can increase the efficiency by nearly 50%, increase the processing capacity, and save operation. cost.

The main factors affecting the processing efficiency of curved grids are as follows:

1. The viscosity of the incoming solid-liquid mixture, the higher the viscosity, the greater the surface tension of the liquid, and the slower the liquid will separate from the solid through the grid gap;

2. Solid particles adhere to the grid bars, causing the area passing through the grid to decrease with the increase of processing time;

3. Whether the grid slag staying on the grid surface can slide down quickly and maintain the effective water passing area.

In order to reduce the influence of the above three factors on the efficiency of solid-liquid separation, using the principle of vibration is one of the more effective solutions. Because the vibration can quickly and evenly distribute the solid-liquid mixture on the working surface, and at the same time, the material on the vibrating surface is frequently affected by gravity, centrifugal force, impact force, friction force and inertial force, which can effectively reduce the surface tension of the liquid and improve the quality of the liquid. The flow rate through the grid gap; the vibration makes it difficult for solid particles to adhere to the surface of the grid, improving the self-cleaning ability of the curved grid; the vibration also makes the friction between the separated debris and the curved grid smaller, thereby reducing the debris The residence time on the curved grid improves the separation efficiency.

The vibrating surface grating adopts stainless steel slit curved grid surface, and the grid bars are inverted trapezoidal, so that the surface gap on the grid surface is small and smooth, and the gap on the back is large, and the grid surface drains smoothly and is not easy to block.

In order to further improve the separation efficiency, the vibrating curved grid is specially equipped with a flexible pressure plate on the grid surface. When the mixed liquid passes through the grid surface, under the action of the flexible pressure plate, the internal pressure of the mixed liquid increases, thereby increasing the speed of the liquid passing through the curved grid. .

According to the characteristics of the curved grid, the present invention scientifically and rationally improves its structure. Compared with the current grid, it has the following advantages:

1. Low energy consumption: Taking the 800×1600 vibrating surface grill as an example, the power of the vibrating device is only 60 watts, which is equivalent to the power consumption of a light bulb;

2. The processing capacity of a single machine is large: under the same comparison conditions, its separation efficiency can be increased by more than 50%;

3. With self-cleaning ability, the grid gap is not easy to block, and it is easy to clean;

4. The material of the whole machine is made of stainless steel, which has high mechanical strength, no deformation and long service life.

Description of drawings

Fig. 1 is a structural axonometric view of an embodiment of the present invention.

Fig. 2 is a structural side view of the embodiment of the present invention.

Fig. 3 is a rear view of the structure of the embodiment of the present invention.

Fig. 4 is a structural front view of the embodiment of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail.

As shown in Figures 1-4, the fixed vibrating curved surface fine grid of this embodiment includes an overflow water distribution system composed of a water inlet 1, a water distribution tank 2 and an air outlet 7; the special stainless steel wedge-shaped steel rod is precisely processed. The formed curved grid surface 4 and the flexible pressure plate 11 formed on the curved grid surface form a water filtration system; the low-amplitude, high-frequency electromagnetic vibration device 5, the vibration sensing rod 9 and the resonant rods 3, 6 constitute a vibration system; A collection and discharge system composed of a water collection tank 10 and a water outlet 8 provided at the bottom of the curved grid surface; the overall frame support system 12 .

The inside of the water distribution tank 2 is provided with an overflow weir, which is made of stainless steel 304 and welded; the water inlet 1, the vent 7 and the water outlet 8 are all equipped with flanges and connected with gaskets and bolts; The curved grid surface 4 is made of special stainless steel wedge-shaped steel rods through precision machining, the grid spacing is 2mm, and the radius of the arc surface is 2.5m; the vibration sensing rod is made of a steel rod with a diameter of 90mm, and the diameter of the resonant rod is It is 60mm, and the sensing rod, resonant rod and grid surface baffle are strengthened and fixed by welding.

The fixed vibrating surface fine grid is very convenient to install. It is generally placed on a concrete platform. It is necessary to consider making a drainage slope on the platform and setting up the necessary sump.

work process:

The solid-liquid mixture to be treated enters the storage tank from the water inlet pipe, and is evenly distributed on the inclined curved grid surface through the overflow weir along the width of the grid surface. The mixed liquid flows downward along the grid surface under the action of its own gravity. Since the grid surface is a curved structure, the mixed liquid generates centrifugal force in the process of uniformly accelerating downward flow. The solid debris with the size of the grid gap is trapped on the grid surface due to the barrier of the grid bars. Under the action of its own gravity, the thrust and vibration force generated by the liquid flow, it quickly slides down the grid surface and falls into the collection pool. Realize the solid-liquid separation process.

The fixed vibrating surface fine grid can effectively reduce the concentration of suspended solids in water and reduce the processing load of subsequent processes. At the same time, it is also used for solid-liquid separation and recovery of useful substances in industrial production. It is an excellent high-efficiency equipment for filtering or recovering solid or colloidal substances such as suspended solids, floating solids, and sediments.

Although the present invention has been disclosed above with preferred embodiments, the embodiments and accompanying drawings are not intended to limit the present invention, and any person familiar with the art can make various changes without departing from the spirit and scope of the present invention. Or embellishment, also belongs to the scope of protection of the present invention. Therefore, the protection scope of the present invention should be defined by the claims of the present application.

Claims (6)

1. a fixed vibrates the curved surface fine fack, it is characterized in that: it comprises the overflow water distribution system that water inlet (1), cloth tank (2) and drain (7) are formed; Curved grid face (4); Short arc, high-frequency electromagnetic oscillation device (5), vibrating sensing rod (9) and resonance rod (3,6) constitute vibrational system; The collection outlet system that water leg (10) that curved grid face bottom is provided with and delivery port (8) are formed; Said overflow water distribution system, curved grid face (4), vibrational system, collection outlet system are installed on the general frame support system (12).

2. fixed according to claim 1 vibration curved surface fine fack is characterized in that: said electromagnetic oscillation device (5), vibrating sensing rod (9), and resonance rod (3,6) add strong weld with the baffle plate of said curved grid face (4) and fix.

3. fixed vibration curved surface fine fack according to claim 1, it is characterized in that: cloth tank (2) inside is provided with downflow weir, and material is a stainless steel 304, is welded.

4. fixed vibration curved surface fine fack according to claim 1, it is characterized in that: said curved grid face (4) is formed through Precision Machining by special stainless steel wedge shape rod iron, and its curved surface meets efficient hydraulic characteristic(s); The flexible pressing plate (11) that said curved grid face (4) and curved grid face are provided with constitutes screening system.

5. fixed vibration curved surface fine fack according to claim 1, it is characterized in that: said curved grid face (4) adopts stainless steel strip to stitch curved grid face, and grizzly bar is for trapezoidal; The flexible pressing plate (11) that said curved grid face (4) and curved grid face are provided with constitutes screening system.

6. fixed vibration curved surface fine fack according to claim 1, it is characterized in that: said water inlet (1), drain (7) and delivery port (8) all are furnished with flange, connect with sealing gasket and bolt.

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