CN103520973B - Non-pressure filter - Google Patents

Abstract

The invention discloses a pressureless filter, which is characterized in that it comprises a filter screen (6) and at least two end plates (4), the filter screen (6) is a cylindrical body, and the end plate (4) is located At both ends of the cylindrical body, the end plate (4) and the filter screen (6) form a filter cavity, and at least one end plate (4) is provided with a water outlet (2), so that the water to be filtered can be filtered from the outside The net (6) enters the filter cavity and is discharged from the water outlet (2); the end plate (4) is provided with a rotating shaft A (3), and the filter cavity formed by the filter screen (6) and the end plate (4) passes through the rotating shaft A (3) is fixed on the fixed frame (1), and can rotate around the rotation axis A (3). Compared with the prior art, the invention has the advantages of simple structure, high reliability, low operation cost, automatic cleaning, continuous filtration and the like.

Description

pressureless filter

technical field

The invention belongs to the field of agricultural irrigation and relates to a filter, in particular to a pressureless filter.

Background technique

Water resources are very precious, and water saving has become the trend of sustainable development of industry and agriculture. In our country, water resources are very scarce, and the per capita water resources are only a quarter of the world's average level, and agriculture is a large water user. Therefore, it is imperative to accelerate the development of agricultural water conservation, and the rapid development of micro-irrigation technology requires Advanced filtering equipment is compatible with it. Among them, filtering equipment is very important equipment.

At present, there are mainly two types of filters for cleaning the filter screen, one is the backwash type, and the other is the self-cleaning type.

Some research results of domestic self-cleaning filters can complete the automatic cleaning of filtered dirt and impurities to a certain extent, but the cleaning mechanism or transmission mechanism needs to be driven by an external force, usually an electric motor, or a larger sewage chamber needs to be added to increase the filtration efficiency. The cost of manufacturing and using the device.

The backwashing filter disclosed in Chinese patent CN202270401U works by changing the direction of water flowing through the filter to backwash and clean the remaining impurities on the filter. Although this flushing method can realize self-cleaning of the filter , but the effect is not good, and many stubborn impurities will still remain on the filter screen, affecting the filtering effect. In particular, the backwashing process requires high water pressure, which greatly increases the cost and energy consumption.

The automatic flushing screen filter disclosed in Chinese patent CN201565186U needs to be divided into two stages during its work, namely, the filtering stage and the cleaning stage, although the cleaning of the filter mesh is carried out by friction between the brush and the filter mesh. Time, the disadvantage of shortening the filter duty cycle. In addition to the above shortcomings, in the process of brushing the filter screen, due to the effect of water pressure, the cleaning effect is not good.

Therefore, a filter with simple structure, good reliability, low-cost operation, automatic cleaning and continuous filtering is proposed.

Contents of the invention

The invention relates to a filter, which is characterized in that it comprises a filter screen (6) and at least two end plates (4), the filter screen (6) is a cylindrical body, and the end plate (4) is located in a cylindrical shape At both ends of the body, the end plate (4) and the filter screen (6) form a filter cavity, and at least one end plate (4) is provided with a water outlet (2), so that the water to be filtered passes through the filter screen (6) from the outside ) into the filter cavity, and then discharged from the water outlet (2); the end plate (4) is provided with a rotating shaft A (3), and the filter cavity formed by the filter screen (6) and the end plate (4) passes through the rotating shaft A (3 ) is fixed on the fixed frame (1), and can rotate around the rotation axis A (3).

The above-mentioned filter screen (6) may be a cylindrical cylindrical body, or a polygonal cylindrical cylindrical body, preferably a cylindrical cylindrical body.

As an improvement, axial vanes (5) are preferably provided on the outer periphery of the filter screen (6).

As an improvement, the above-mentioned filter screen (6) is preferably equipped with a cleaning device, and the cleaning device can be installed inside the filter cavity, or outside the filter cavity, or both inside and outside the filter cavity. The above-mentioned cleaning device is a water-rinsing device.

The specific structure of the above-mentioned water flushing device is as follows: at least including the water inlet pipe (11), the water inlet pipe (11) is provided with a flushing port (12), and the water outlet direction of the flushing port (12) is the surface of the filter screen (6). The water pipe (11) is connected with the fixed frame (1) through the bracket B (13).

The actual use is as follows: the filter cavity composed of the filter screen (6) and the end plate (4) is fixed on the fixed frame (1) through the rotating shaft A (3) on the end plate (4), and the filter cavity is placed Enter the water to be filtered, the filtered water passes through the filter screen and enters the filter chamber, and the filtered water is discharged from the filter chamber through the water outlet.

Compared with the prior art, the invention has the advantages of simple structure, high reliability, low operation cost, automatic cleaning, continuous filtration and the like.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

FIG. 2 is a side view of FIG. 1 .

Fig. 3 is a side sectional view of Fig. 1 .

Figure 4 is a schematic structural view of Embodiment 3.

FIG. 5 is a side view of FIG. 4 .

FIG. 6 is a schematic structural view of Embodiment 4.

FIG. 7 is a side view of FIG. 6 .

Fig. 8 is a schematic cross-sectional structural diagram along the B-B direction of Fig. 8 .

FIG. 9 is a schematic structural diagram of the use state I.

Fig. 10 is a schematic structural diagram of the use state II.

As shown in the drawings: 1 is the fixed frame, 2 is the water outlet, 3 is the shaft A, 4 is the end plate, 5 is the blade, 6 is the filter screen, 11 is the water inlet pipe, 12 is the flushing port, 13 is the bracket B, 14 is the Suction pump, 15 is reservoir.

Detailed ways

Embodiment 1: Referring to Figures 1 to 3, it is a schematic structural diagram of Embodiment 1 of the present invention, including a filter screen (6) and two end plates (4), the filter screen (6) is a cylindrical body, and the end plates (4) Located at both ends of the cylindrical body, the end plate (4) and the filter screen (6) form a filter cavity, and a water outlet (2) is provided on one of the end plates (4), so that the water to be filtered Enter the filter cavity through the filter screen (6) from the outside, and then discharge from the water outlet (2); the end plate (4) is provided with a rotating shaft A (3), and the filter screen (6) and the end plate (4) form a filter The cavity is fixed on the fixed frame (1) through the rotating shaft A (3), and can rotate around the rotating shaft A (3).

The actual use is as follows: firstly, fix the filter cavity composed of the filter screen (6) and the end plate (4) on the fixed frame (1) through the rotating shaft A (3) on the end plate (4); 3/4 of the filter chamber is placed in the water to be filtered, that is, 1/4 of the filter chamber is above the water surface, so that the water to be filtered passes through the filter screen (6) from the outside of the filter chamber into the inside of the filter chamber, and then The clean water in the filtration chamber is pumped out from the water outlet (2) by the water pump arranged at the water outlet (2).

Embodiment 2: Compared with Embodiment 1, the difference of this embodiment is that axial vanes (5) are provided on the outer periphery of the filter screen (6).

The actual use is as follows: the filter cavity is put into flowing water, and the blades (5) drive the filter cavity to rotate under the action of the water flow.

Embodiment 3: Referring to Figures 4 to 5, it is a schematic structural view of Embodiment 4. Compared with Embodiment 1, the difference of this embodiment is that a cleaning device is provided, and the cleaning device is arranged outside the filter cavity; The cleaning device includes a water inlet pipe (11) and a water pump. The water inlet pipe (11) is provided with a flushing port (12). The water outlet direction of the flushing port (12) faces the surface of the filter screen (6). The bracket B (13) is connected with the fixing frame (1).

The actual use is as follows: the water outlet pipe (2) and the water inlet pipe (11) are both connected to the water pump, and the water entering the filter chamber through the water inlet pipe (11) cleans the filter screen.

Embodiment 4: Referring to Figures 6 to 8, it is a schematic structural view of Embodiment 6. Compared with Embodiment 1, the difference of this embodiment is that a cleaning device is provided, and the cleaning device is arranged inside the filter cavity; The cleaning device comprises a water inlet pipe (11) and a water pump. The water inlet pipe (11) is provided with a flushing port (12), and the water outlet direction of the flushing port (12) faces the surface of the filter screen (6).

Claims (2)

1. a Non-pressure filter, it is characterized in that: comprise filter screen (6) and at least two end plates (4), filter screen (6) is a cylindricality cylindrical body, end plate (4) is positioned at the two ends of cylindricality cylindrical body, end plate (4) and filter screen (6) form a filter cavity, at least one piece of end plate (4) is provided with delivery port (2), water to be filtered is entered in filter cavity from outside through filter screen (6), then discharges from delivery port (2), end plate (4) is provided with rotating shaft A (3), the filter cavity that filter screen (6) and end plate (4) are formed is fixed on fixed mount (1) by rotating shaft A (3), and can rotate by A (3) around the shaft, above-mentioned filter screen (6) is provided with axial blade (5) outward for one week, described filter screen (6) is provided with cleaning device, cleaning device is located at inside and/or the outside of filter cavity, cleaning device is water flushing device, the concrete structure of described water flushing device is as follows: at least comprise water inlet pipe (11), water inlet pipe (11) is provided with rinse mouth (12), the water outlet direction of rinse mouth (12) is filter screen (6) surface, described water inlet pipe (11) is connected with fixed mount (1) by support B (13).

2. Non-pressure filter according to claim 1, is characterized in that: filter screen (6) is the one of cylindrical barrel body or multi-edge column-shaped cylindrical body.