CN2875559Y

CN2875559Y - Back flushing lamination type filter for microfilling

Info

Publication number: CN2875559Y
Application number: CNU2006200235718U
Authority: CN
Inventors: 孙兰英; 刘国强; 李才泼
Original assignee: Hebei University of Science and Technology
Current assignee: Hebei University of Science and Technology
Priority date: 2006-02-24
Filing date: 2006-02-24
Publication date: 2007-03-07
Anticipated expiration: 2016-02-24

Abstract

The utility model provides a micro-irrigation backwashing lamination filter whose basic structure includes a filter shell for arranging the water inlet and outlet, a filter lamination arranged inside the shell and a backwashing pipe arranged in the filter lamination. The utility model is characterized in that a work filter chamber and a backwashing filter chamber are arranged inside the filter shell; a backwashing water inlet is arranged in the backwashing filter chamber; the backwashing pipe is a hydrodynamic rotator which moves up and down, prongs two filter chambers and is concentrically arranged with the filter lamination; the backwashing hydrodynamic spray hole vertical to the filter lamination is uniformly arranged on the backwashing pipe. As the hydrodynamic mechanism of the hydrodynamic piston and backwashing pipe is adopted in the filter chamber, the utility model can make the backwashing pipe rotate radially and move axially at the same time and control the tightness and looseness of the filter lamination to make the filter laminations be washed in turn; during backwashing the machine does not need to be stopped and the purified water is not needed to be used; the three-way valve can be used to change the direction of the water flow, close the water outlet, so as to realize the backwashing during the irrigation process. The utility model is benefit to the popularization and application in the country.

Description

Slight irrigation recoil laminated filter

Technical field

The utility model relates to a kind of slight irrigation with the recoil laminated filter, is the matching component of slight irrigation, sprinkling irrigation, belongs to agricultural water-saving irrigation mechanical filter equipment technology field. and be particularly useful for the backwash in the irrigation process of farmland slight irrigation filter and handle.

Background technology

Popularization and application along with water-saving irrigation technique; water filter has also obtained large-scale development; existing farmland water filtration treatment facility all is to adopt serial arrangement to connect; irrigation water is tentatively filtered through centrifugal silt filter; enter stacked or well strainer again; the washing problems major part of laminated filter is continued to use to shut down and is pulled down artificial cleaning or under the prerequisite that stops to irrigate; realize filtering the backwash of lamination by changing the direction of a stream of water; the problem that this backwash mode exposes is that filter plant connects complexity; the manufacturing cost height; application number " 02125390.0 backwash net-type filter " has proposed a kind of filter that can realize the screen pack backwash in irrigation immediately; basic structure be provided with in the middle of the screen pack rotation blowdown mechanism will net in the dirt sucking-off; the subject matter of this technical scheme is to add rotary power; its manufacturing cost will be improved greatly, otherwise the backwash of screen pack and filter normal irrigation can't carry out simultaneously.

Summary of the invention

The purpose of this utility model is to provide a kind of slight irrigation with the recoil laminated filter, utilizes flow dynamic to realize filtering the backwash of lamination.

The technical solution of the utility model is achieved in that this slight irrigation recoil laminated filter, its basic structure comprises filter housings and the interior filtration lamination that is provided with of housing that intake-outlet is set, filter the recoil tube that is provided with in the lamination, it is characterized in that: work filter chamber and recoil filter chamber are set in the filter housings, the recoil filter chamber is provided with the recoil water inlet, described recoil tube be through two filter chambers and with a hydrodynamic(al) rotary body that moves up and down that filters the concentric setting of lamination. uniform recoil hydrodynamic(al) hole for water spraying on the recoil tube perpendicular to the filtration lamination.

Described slight irrigation recoil laminated filter, described recoil tube tangentially is provided with two rotating vanes, and blade tip is provided with the opposite hole for water spraying of direction.

Described slight irrigation is provided with the hydrodynamic(al) piston, constitutes the elevating mechanism that moves up and down with lamination top board, spring with recoil laminated filter, the upper end that described recoil tube extends the work filter chamber.

Described slight irrigation communicates with screen pack with recoil laminated filter, the lower end that described recoil tube extends the recoil filter chamber.

Described slight irrigation recoil laminated filter, described filter water inlet are provided with blow down branch and recoil blowoff valve outward, and the water inlet person in charge is provided with triple valve and is connected with filter water inlet, recoil water inlet.

Described slight irrigation recoil laminated filter, described filter delivery port is provided with the recoil control valve.

Described slight irrigation is characterized in that with the recoil laminated filter described filtration lamination two sides is provided with the opposite radial type trench of direction.

Slight irrigation of the present utility model with the recoil laminated filter because in hydrodynamic(al) mechanism that filter chamber has adopted hydrodynamic(al) piston and recoil tube; backwash can make recoil tube radially move axially in the rotation; simultaneously the controlled filter lamination compresses and loosens; the groove that filters between the lamination is rinsed successively; needn't shut down during backwash, only need three-way valve is changed the direction of a stream of water, close delivery port; can in the irrigation process, realize backwash, help in the rural area popularization and application.

Description of drawings

Fig. 1 is the structural representation of filter duty

Fig. 2 is the connected mode schematic diagram of filter in system

Fig. 3 is the vertical view of Fig. 1

Fig. 4 is the cutaway view of A-A among Fig. 1

Fig. 5 is the cutaway view of B-B among Fig. 1

Fig. 6 is the cutaway view of C-C among Fig. 1

Fig. 7 is the cutaway view of D-D among Fig. 1

Fig. 8 is a filter backwash status architecture schematic diagram

Among the figure:

1, filter lamination 2, lamination top board 3, hydrodynamic(al) piston 4, spring 5, hole for water spraying 6, support 7, work filter chamber 8, cover 9 on the filter, apopore 10, filter housings 11, water chamber 12, delivery port 13, filter is cover 14 down, screen pack 15, filter screen stand 16, recoil filter chamber 17, backwash water inlet 18, water inlet 19, cover plate 20, rotation recoil tube 21, water inlet is responsible for 22, triple valve 23, sewage draining exit 24, blowoff valve 25, the recoil control valve

The specific embodiment

Fig. 1,2,8 provides a kind of embodiment of the present utility model, filter shown in the figure is when normal the use, filter sewage draining exit 23 is closed, and irrigation water enters work filter chamber 7 from the water inlet person in charge 21, water inlet 18, discharges from delivery port 12 by filtering lamination 1 filtration back;

When the filter lamination need wash, make irrigation water enter backwash water inlet 17 by triple valve 22, open sewage draining exit 24, close recoil control valve 25, this moment, current entered rotation recoil tube 20 through recoil filter chamber 16 and screen pack 14, because it is opposite to be located at blade hole for water spraying 5 directions of recoil tube 20 tangent line bearing of trends, as shown in Figure 5, just form a turning moment during water spray, make recoil tube rotation water spray wash groove between the lamination successively from inside to outside; Simultaneously because the change of water (flow) direction and recoil tube water spray cause work filter chamber center pressure to increase, the hydrodynamic(al) piston of the recoil tube upper end jack-up lamination top board 2 that makes progress discharges the lamination space that is pressed together, and more helps the backwash of groove between the lamination.

After backwash is finished, triple valve 25 is resetted, close sewage draining exit 1, open delivery port 12, this moment, water (flow) direction was got back to original state again, and work filter chamber 7 center pressures reduce, piston 3 moves down under the effect of spring 4, and lamination top board 2 compresses the filtration lamination, realizes that normal irrigation filters.

Recoil filter chamber 16 and screen pack 14 that slight irrigation of the present utility model is provided with the recoil laminated filter, purpose are that recoil water is further purified, and pollute once more when avoiding recoiling.

Foregoing description only proposes as a kind of enforceable technical scheme of the utility model slight irrigation with the recoil laminated filter, not as the single restrictive condition to its structure itself.

Claims

1, slight irrigation recoil laminated filter, its basic structure comprises intake-outlet (18 is set, 12) the filtration lamination (1) that is provided with in filter housings and the housing, filter the recoil tube (20) that is provided with in the lamination, it is characterized in that: work filter chamber (7) and recoil filter chamber (16) are set in the filter housings, the recoil filter chamber is provided with recoil water inlet (17), described recoil tube be through two filter chambers and with a hydrodynamic(al) rotary body that moves up and down that filters the concentric setting of lamination, uniform recoil hydrodynamic(al) hole for water spraying (5) on the recoil tube perpendicular to the filtration lamination.

2, slight irrigation according to claim 1 is characterized in that with the recoil laminated filter described recoil tube tangentially is provided with two rotating vanes, and blade tip is provided with the opposite hole for water spraying of direction (5).

3, slight irrigation according to claim 1 is with the recoil laminated filter, it is characterized in that the upper end that described recoil tube (20) extends work filter chamber (7) is provided with hydrodynamic(al) piston (3), constitutes the elevating mechanism that moves up and down with lamination top board (2), spring (4).

4, slight irrigation according to claim 1 is with the recoil laminated filter, it is characterized in that the lower end that described recoil tube (20) extends recoil filter chamber (16) communicates with screen pack (14).

5, slight irrigation according to claim 1 recoil laminated filter, it is characterized in that outer blow down branch and the recoil blowoff valve (24) of being provided with of described filter water inlet (18), the water inlet person in charge is provided with triple valve (22) and is connected with filter water inlet (18), recoil water inlet (17).

6, slight irrigation according to claim 1 is characterized in that with the recoil laminated filter described filter delivery port (12) is provided with recoil control valve (25).

7, slight irrigation according to claim 1 is characterized in that with the recoil laminated filter described filtration lamination two sides is provided with the opposite radial type trench of direction.