CN103239928B - Low-voltage self-cleaning net-type continuous filter - Google Patents

Abstract

The invention relates to the technical field of agricultural irrigation, in particular to a low-pressure self-cleaning net-type continuous filter. At present, in agricultural irrigation technology, there are mainly two types of filters that can clean the filter screen. One is the backwashing type. The backwashing process requires high water pressure, which greatly increases the cost and energy consumption, and the cleaning effect is not ideal. The other is the self-cleaning type, which needs to be divided into two stages during work, namely the filtration stage and the cleaning stage, resulting in the shortcoming of the filtration working cycle and low cleaning efficiency. The invention comprises a shell, which is provided with a water inlet and a water outlet; the inner cavity of the shell is provided with a barrel-shaped filter screen driven by a driving device; the barrel-shaped filter screen is assembled with an end cover through a ball bearing, and the inner side of the end cover is There are two upper baffles, and the same two lower baffles are fixed on the lower part of the inner cavity of the housing corresponding to the upper baffles. The lower baffles are equipped with brush bodies, which are closely attached to the surface of the filter screen. There is a gap between the edge and the inner cavity of the housing.

Description

Low pressure self-cleaning mesh continuous filter

technical field

The invention relates to the technical field of agricultural irrigation, in particular to a low-pressure self-cleaning net-type continuous filter.

Background technique

At present, in the technical field of agricultural irrigation, there are mainly two types of filters with washable screens, one is the backwash type; the other is the automatic flushing screen type.

The working principle of the backwash filter is to clean the remaining impurities on the filter by changing the direction of water flow. Although this flushing method can realize the self-cleaning of the filter, the effect is not good, and many stubborn impurities will still remain. On the filter, affect the filtering effect. In addition, the backwashing process requires high water pressure, which greatly increases the cost and energy consumption. affect the filtering effect. At the same time, this is a way of working at intervals.

At present, the automatic flushing screen filter is cleaned by friction between the brush and the filter screen when cleaning the filter screen, but it needs to be divided into two stages during work, namely the filtering stage and the cleaning stage, which is also an interval working method. The duty cycle becomes shorter. 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.

Contents of the invention

The purpose of the present invention is to provide a low-pressure self-cleaning net-type continuous filter to overcome the defects in the prior art and realize uninterrupted filtration and self-cleaning.

The technical scheme of the present invention includes a shell; it is composed of a barrel-shaped filter screen, a transmission shaft, a bearing, a miscellaneous storage tank, an upper baffle, a lower baffle, and a brush body; There is a water outlet; there is a miscellaneous discharge port under the shell, and a miscellaneous storage tank is provided at the opening of the miscellaneous discharge port, and a sewage discharge port is provided on the miscellaneous storage tank; the transmission shaft is installed on the front end cover of the housing through the bearing, and the transmission shaft is installed There is a barrel-shaped filter screen, and the drive shaft is connected to the motor fixed on the outer bracket; the barrel-shaped filter screen and the end cover of the barrel-shaped filter screen are assembled through ball bearings, and two upper baffles are fixed on the inner side of the barrel-shaped filter screen end cover , there are two lower baffles fixed on the lower part of the inner cavity of the shell corresponding to the upper baffle, the lower baffle is equipped with a brush body, and the brush body is in close contact with the surface of the filter screen; There are gaps.

Further, the cross-section between the two upper baffles is fan-shaped.

The invention has the advantages of simple structure and low cost, the bottom of the barrel-shaped filter screen is in a region with low pressure, which is beneficial for the brush body to clean impurities, and the pressure difference between the water inlet and outlet of the filter is the same as that of the water inlet and outlet of the filter in the prior art. The difference is small; the cleaning effect is good, the cost is low, the later maintenance is convenient, and it has the characteristics of continuous filtration and cleaning.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the present invention;

Fig. 2 is the axial sectional view of Fig. 1;

Fig. 3 is a sectional view taken along line A-A of Fig. 1 .

Detailed ways

In the figure: 1 water outlet, 2. rear end cover, 3. front end cover, 4. water inlet, 5. transmission shaft, 6. bearing, 7. shell, 8. miscellaneous storage tank, 9. barrel filter, 10. Upper baffle, 11. Lower baffle, 12. Brush body, 13. Barrel filter end cover.

It can be seen from Fig. 1, Fig. 2 and Fig. 3 that it includes a shell; it is composed of a barrel filter screen 9, a transmission shaft 5, a bearing 6, a miscellaneous storage tank 8, an upper baffle 10, a lower baffle 11, and a brush body 12; the shell A water inlet 4 is provided on the upper part of one end of the body, and a water outlet 1 is provided on the rear end cover 2; Sewage outlet; the transmission shaft 5 is installed on the front end cover 3 of the housing through the bearing 6, the transmission shaft 5 is equipped with a barrel filter 9, and the transmission shaft 5 is connected with the motor fixed on the outer bracket; the barrel filter 9 and the barrel filter The mesh end caps 13 are assembled by ball bearings. Two upper baffles 10 are fixed on the inside of the barrel-shaped filter mesh end caps 13. The cross section between the two upper baffles 10 is fan-shaped. Two lower baffles 11 are fixed on the corresponding positions of the baffle 10, and the lower baffle 11 is equipped with a brush body 12, and the brush body 12 is closely attached to the surface of the filter screen; there is a gap between the edge of the baffle plate and the inner cavity of the housing; The bottom of the barrel screen 9 is in an area of less pressure.

When the present invention works, whenever a certain part of the barrel-shaped filter screen is located at the bottom of the housing, the brush body cleans the filter screen at this part once. The brush body 12 on the plate can clean the filter screen easily. Impurities cleaned by the brush body enter the miscellaneous storage tank 8 through the miscellaneous discharge port below the housing, and are released through the sewage discharge port on the miscellaneous storage tank 8 .

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. All the implementation manners cannot be exhaustively listed here. All obvious changes or variations derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims (2)

1. a low pressure self-cleaning net formula continuous filter, comprises housing (7); It is characterized in that also being made up of barrel strainer (9), power transmission shaft (5), bearing (6), the assorted tank (8) of storage, overhead gage (10), lower baffle plate (11), brush body (12); Shell one end top is provided with water inlet (4), and rear end cap (2) is provided with delivery port (1); Housing (7) below is provided with impurity discharging port, and the opening part of impurity discharging port is provided with the assorted tank (8) of storage, and the assorted tank (8) of storage is provided with sewage draining exit; Power transmission shaft (5) is contained on housing forward end lid (3) by bearing (6), power transmission shaft (5) is equipped with barrel strainer (9), and power transmission shaft (5) is connected with the motor be fixed on support arm; Assembled by ball bearing between barrel strainer (9) and barrel strainer end cap (13), inner side is fixed with two pieces of overhead gages (10) to barrel strainer end cap (13), the bottom of housing cavity and overhead gage (10) opposite position are fixed with two pieces of lower baffle plates (11), lower baffle plate (11) is equipped with brush body (12), brush body (12) and screen surface are close to; Gap is provided with between the edge of baffle plate and housing cavity.

2. a kind of low pressure self-cleaning net formula continuous filter as claimed in claim 1, is characterized in that the cross section between two pieces of overhead gages (10) is fan-shaped.