CN111151065A - Centrifugal cone net integrated filter - Google Patents

Abstract

The invention relates to a centrifugal cone net integrated filter, which is characterized in that: the device comprises a shell, wherein the upper part of the shell is a cylindrical cavity, the lower part of the shell is a conical hopper, the side wall of the cylindrical cavity is provided with a water inlet, the top of the cylindrical cavity is provided with a water outlet, the bottom of the water outlet is fixedly connected with a conical pipe with a small upper part and a big lower part, and the bottom opening of the conical pipe is fixedly connected with a conical screen; the conical pipe above the conical screen is provided with a circle of concave edges, the concave edges are sleeved with a stainless steel upper ring, the upper ring is provided with four cleaning brushes extending downwards along the conical screen at intervals, the bottoms of the cleaning brushes are respectively connected to a lower ring with a smaller diameter, the outlet of the conical hopper is connected with a sand collecting tank through a flange, and a plurality of flow stabilizing blades are arranged on the inner wall above the outlet of the conical hopper at intervals. The invention has simple and practical design structure, low manufacturing cost and convenient manufacture, and can be widely used in agricultural irrigation filtration.

Description

Centrifugal cone net integrated filter

Technical Field

The invention relates to a filter, in particular to a centrifugal cone net integrated filter suitable for a drip irrigation system.

Background

The filter is the equipment commonly used in the micro-irrigation system, when irrigation water source is groundwater, the form of combination of a centrifugal filter and a screen mesh or a laminated filter is generally adopted for filtering, most of silt in water is removed after the silt in water is filtered by a first-stage centrifugal filter, and the screen mesh filter or the laminated filter is used as a second-stage filtering device for removing residual silt in water, so that the double filtering effect on irrigation water is realized. Firstly, water flow needs to pass through two devices, each stage of filter causes certain energy loss, and irrigation water has more pressure loss after being filtered; secondly, the two-stage filtering system needs to connect the two-stage filtering devices in the engineering application process, so that the manufacturing cost is increased, the occupied area of the system is increased, and the engineering investment is increased; moreover, the secondary filtering device of the filtering system is a screen mesh type or lamination type filter, the retained impurities are prevented from passing through by the screen mesh or lamination gaps, the impurities are removed by adopting a back washing mode, and particularly when the water quality is poor, frequent back washing is needed, so that great inconvenience is brought to engineering operation.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide a centrifugal type conical-net integrated filter having a simple structure and capable of removing impurities under a low head loss condition

In order to achieve the purpose, the invention adopts the following technical scheme: a centrifugal awl net integration filter which characterized in that: the device comprises a shell, wherein the upper part of the shell is a cylindrical cavity, the lower part of the shell is a conical hopper, the side wall of the cylindrical cavity is provided with a water inlet, the top of the cylindrical cavity is provided with a water outlet, the bottom of the water outlet is fixedly connected with a conical pipe with a small upper part and a big lower part, and the bottom opening of the conical pipe is fixedly connected with a conical screen; the cleaning device is characterized in that a circle of concave edge is arranged on the conical pipe above the conical screen, a stainless steel upper ring is sleeved on the concave edge, four cleaning brushes extending downwards along the conical screen are arranged on the upper ring at intervals, the bottoms of the cleaning brushes are respectively connected to a lower ring with a smaller diameter, an outlet of the conical hopper is connected with a sand collecting tank through a flange, and a plurality of flow stabilizing blades are arranged on the inner wall above the outlet of the conical hopper at intervals.

The shape of the flow stabilizing blade is any one of a strip shape, a square shape, a triangular shape and a fan shape.

Due to the adoption of the technical scheme, the invention has the following advantages: 1. the filter can realize higher water-sand separation efficiency under the condition of the same pressure difference and flow capacity; the device investment and the occupied area of the device are reduced, and the two filtering modes are integrated, so that the irrigation water can be thoroughly filtered at one time; 2. the cleaning brush for stripping silt is arranged at the filtering part of the conical screen, so that self-cleaning can be realized to a certain degree in the working process, the interval time of backwashing of the filters can be prolonged, the large-flow water flow is filtered by adopting a mode of connecting a plurality of filters in parallel, and when the silt attached to the screen is sticky or too fine and cannot be continuously separated, the screen can be cleaned by adopting a backwashing mode. 3. The invention realizes two-stage filtration in one filter, thus the occupied area of the equipment is small and the fixed investment is reduced. The invention has simple and practical design structure, low manufacturing cost and convenient manufacture, and can be widely used in agricultural irrigation filtration.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

As shown in fig. 1 and 2, the present invention comprises a housing, wherein the upper part of the housing is a cylindrical cavity 1, and the lower part of the housing is a conical hopper 2. The side wall of the cylindrical cavity 1 is provided with a water inlet 3, the top is provided with a water outlet 4, the bottom of the water outlet 4 is fixedly connected with a tapered tube 5 with a small upper part and a big lower part, and the bottom opening of the tapered tube 5 is fixedly connected with a tapered screen 6 (as shown in figure 3). The conical pipe 5 above the conical screen 6 is provided with a circle of concave edges, the concave edges are sleeved with an upper stainless steel circular ring 7 (shown in figure 4), the upper circular ring 7 is provided with four cleaning brushes 8 which extend downwards along the conical screen 6 at intervals, the bottoms of the cleaning brushes 8 are respectively connected to a lower circular ring 9 with a smaller diameter (shown in figures 5 and 6), the outlet of the conical hopper 2 is connected with a sand collecting tank 11 through a flange 10, and the inner wall above the outlet of the conical hopper 2 is provided with a plurality of flow stabilizing blades 12 at intervals.

In the above embodiment, the shape of the flow stabilizing blade 12 may be a long strip, a square, a triangle, a fan, or the like.

When high-pressure water flow containing silt in the system enters the cylindrical cavity 1 from the water inlet 3 which is radially arranged in the invention, under the action of centrifugal force, water containing silt is spirally separated between the tapered pipe 5 and the cylindrical cavity 1, and the silt can rotate and descend while being close to the inner side wall of the cylindrical cavity 1 under the action of centrifugal force because the silt contained in the water has larger specific gravity; because conical tube 5 is big end down, the space between cylinder chamber 1 and conical tube 5 diminishes gradually, makes the rotational speed of rivers accelerate, has promoted the separation effect of silt. When the water flow keeps a good solid-liquid separation state, the sand content of the water flow which is circled around the conical pipe 5 can be greatly reduced, particularly when the water flow is positioned below the conical pipe 5, the water flow space is suddenly enlarged, the water flow speed is rapidly reduced, the sand carrying capacity is effectively reduced, particularly, the steady flow blades 12 have the effect of further weakening the disturbance of the water flow, and the speed of the sand which finally enters the sand collection tank 11 along the side wall of the conical hopper 2 is greatly increased. And the water filtered by the conical screen 6 is discharged from the water outlet 4 of the cylindrical cavity 1.

According to the invention, the upper ring connected with the four cleaning brushes 8 is arranged in the concave edge of the conical pipe 5, so that when water flows in a spiral mode, the cleaning brushes 8 are driven to rotate around the conical screen 6 to clean silt on the conical screen 6 at any time, so that the silt can be effectively prevented from adhering to the conical screen, and the separated water flow can normally pass through the conical screen.

In the above embodiment, if the amount of water needed to treat the silt is large, a plurality of filters connected in parallel can be used to realize operation, that is, more than two filters with different flow rates are connected in parallel.

Claims (2)

1. A centrifugal awl net integration filter which characterized in that: the device comprises a shell, wherein the upper part of the shell is a cylindrical cavity, the lower part of the shell is a conical hopper, the side wall of the cylindrical cavity is provided with a water inlet, the top of the cylindrical cavity is provided with a water outlet, the bottom of the water outlet is fixedly connected with a conical pipe with a small upper part and a big lower part, and the bottom opening of the conical pipe is fixedly connected with a conical screen; the conical pipe above the conical screen is provided with a circle of concave edges, the concave edges are sleeved with a stainless steel upper ring, the upper ring is provided with four cleaning brushes extending downwards along the conical screen at intervals, the bottoms of the cleaning brushes are respectively connected to a lower ring with a smaller diameter, the outlet of the conical hopper is connected with a sand collecting tank through a flange, and a plurality of flow stabilizing blades are arranged on the inner wall above the outlet of the conical hopper at intervals.

2. A centrifugal cone-web integrated filter according to claim 1 wherein: the shape of the flow stabilizing blade is any one of a strip shape, a square shape, a triangular shape and a fan shape.

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