CN202666565U - Micro-irrigation full-automatic backwashing sand filter - Google Patents

Abstract

The utility model provides a micro-irrigation full-automatic backwashing sand filter; two sand filter tanks are respectively mounted on one pair of brackets in parallel; two filter cartridges are longitudinally arranged in the filter tanks in parallel, respectively; a water outlet is led out from the other end of each filter cartridge to the outside of a tank body; a stop valve and a pressure gauge are respectively mounted on a pipeline of each water outlet; a pull handle is mounted on a filter core at one end of each flange cover; partition boards are transversely mounted at the middle parts in the filter tanks, respectively; water inlets and sand filling openings are respectively led out upward from the tops of the filter tanks on two sides of the partition boards; a backwashing control valve is mounted on each water inlet by a branch pipe; the other end of the branch pipe of each backwashing control valve is connected to a water inlet pipe in parallel; a water adding pipe is connected to each backwashing control valve toward the inside of the water inlet; the upper end of each backwashing control valve is connected to one sewage discharge pipe; stop valves are respectively arranged on the sewage discharge pipe and the water inlet pipe; and two sand discharging openings are respectively formed on the bottom side of each filter tank.

Description

A kind of slight irrigation full-automatic back washing sand filter

Technical field:

The utility model relates to and watering, and particularly a kind of automaticity is high, the slight irrigation full-automatic back washing sand filter that backwash effect is good, flow is large, easy to maintenance.

Background technology:

Slight irrigation is as a kind of advanced person's sprinkling technique, has water-saving, energy-conservation advantage, still, because the flow diameter of the key equipment douche of slight irrigation is little, is easy to be stopped up by the impurity in the water, causes that water distribution is uneven, systematic function descends, even the whole system paralysis.Sand filter is the comparatively widely micro-irrigation filter of using at present, and it is strong to have the removal of impurities ability, the advantage of good filtration effect, energy-saving water-saving.But still exist that the backwash automaticity is poor, water amount is little, safeguard the shortcoming of inconvenience.

Summary of the invention:

It is good that the purpose of this utility model provides a kind of backwash automaticity, and water amount is large, easy to maintenance, the slight irrigation automation backwash sand filter of energy-saving water-saving.

The technical solution of the utility model is finished as follows, it includes the sand filtering tank, it is characterized in that: have two sand filtering tanks to be installed in parallel in respectively on the pair of brackets, parallel longitudinal is provided with two filter cylinders respectively in each sand filtering tank, a filter core is housed respectively in each filter cylinder, go out tank body at a distal process of each filter cylinder and be provided with a blind flange, the other end at each filter cylinder leads to respectively a delivery port outside tank body, pipeline at each delivery port is separately installed with a stop valve and a Pressure gauge, on the filter core of each blind flange one end, a handle is installed in respectively at filter cylinder, the middle part is horizontally installed with respectively a dividing plate in filter tank, upwards lead to respectively a water inlet and a sand loading mouth at the filter tank top on dividing plate both sides, in each water inlet, be respectively equipped with the sprinkler of enlarged diameter, with arm a backwash control valve is installed respectively in each water inlet, the arm other end of each backwash control valve is connected in parallel respectively on the water inlet pipe, on each backwash control valve, in water inlet, be connected with filler pipe respectively, the upper end of each backwash control valve is connected on the blow-off pipe, be respectively equipped with stop valve at blow-off pipe and water inlet pipe, be respectively equipped with a sand removing hole in the bottom surface, dividing plate both sides of each filtering tank.Tank body of the present utility model is provided with two water cavities of crossing and filters with two filter cores, so water flow is large, efficient is high, at each water inlet the backwash control valve is installed simultaneously, can realize filtering and backwash work is carried out simultaneously, not affect the normal operation of whole system.

Description of drawings:

Fig. 1 is overall structure schematic diagram of the present utility model; Fig. 2 is the sectional structure schematic diagram of a filtering tank of the present utility model.

The specific embodiment:

Describe an embodiment in detail in conjunction with above accompanying drawing, the utility model is to be installed in parallel in respectively on the pair of brackets 17 with two sand filtering tanks 7, parallel longitudinal is provided with two filter cylinders 12 respectively in each sand filtering tank, in each filter cylinder, be respectively charged into a filter core 11, give prominence to respectively tank body at the left end of each filter cylinder a blind flange 9 is installed, right-hand member at each filter cylinder leads to respectively a delivery port 16 outside tank, pipeline at each delivery port is separately installed with a stop valve 3 and a Pressure gauge 2, a handle 10 is installed in respectively at filter cylinder on the filter core of each blind flange one end, the middle part is horizontally installed with respectively a dividing plate 13 in filter tank, upwards lead to respectively a water inlet 8 and a sand loading mouth 5 at the filter tank top on dividing plate both sides, in each water inlet, be respectively equipped with the sprinkler 14 of enlarged diameter, with arm a backwash control valve 1 is installed respectively in each water inlet, the arm other end of each backwash control valve is connected in parallel respectively on the water inlet pipe 18, on each backwash control valve, in water inlet, be connected with filler pipe respectively, the upper end of each backwash control valve is connected on the blow-off pipe 4, water inlet pipe at blow-off pipe is respectively equipped with stop valve 3, is respectively equipped with a sand removing hole 6 in the bottom surface, dividing plate both sides of each filtering tank.Tank body of the present utility model is provided with two water cavities of crossing and filters with two filter cores, water flow is increased, improved operating efficiency, a backwash control valve is installed respectively on four water inlets, can conveniently carry out sewage backwash to each sandstone 15 of crossing in the water cavity in the tank, reduce labour intensity, improve service life.

Its operation principle is: when being in the normal filtration duty, unidirectional intake-outlet communicates on each backwash control valve, the sewage backwash mouth of inner valve block sealing vertical direction, original state water enters in the tank body via control valve and each water inlet of tank body from water inlet manifold, by sprinkler water is evenly distributed to the sandstone filter bed surface that quartz sand particle is piled up, current are in through quartz sand filter porous media motion process, some solid impurities and suspended particulate are trapped within the hole between filtering material particle, the water body that flows through behind the filtering layer enters filter core by the filter cylinder hole, and compiles by delivery port and supply with irrigation system.Each filtering tank of the utility model is provided with two water inlets, and be provided with dividing plate in tank interior and formed two and cross water cavities, under two tank integrated modes, being equivalent to a cover filter has four to cross water cavities, also design simultaneously the version of two filter cylinders, thereby increased the filtering traffic of tank body.Backwash process refers to that the dirt that filtrate is held back stops up the hole between filtering material particle gradually through after the certain hour filtration work operation, usually needs this moment to adopt reverse flow to come dirt in the filter rinsed filter bed.When backwash mode begins, move on the valve block of the filtering tank upstream backwash control valve that is rinsed and close water inlet, and connection delivery port and sewage draining exit, make the current that carry dirt flow into the delivery port of backwash control valve from the upper end of tank body in reverse mode, then enter blow-off line through sewage draining exit, backwash process is by filter cylinder pressure water to be impacted filtrate below filtering layer, make in the filtering material particle expansion and gush, filtering material particle is under hydraulic action, thereby frictional impact breaks away from the impurity and the particle that are attached to filter material surface mutually, enter blow-off line with up current, it includes the hydraulics motion of sand filtering material particle, the separating and the complicated hydrodynamics process such as motion of different impurities and filtrate.When being in filtered model, crossing water cavities for four works simultaneously: and one when crossing water cavity and entering the backwash state, other crosses water cavity still can continue operation, the backwashing water utilization be to cross the clean water that water cavity leaches from the tank body of filtration condition, one by one filter tank being crossed water cavity cleans, namely when one water cavity carries out backwash excessively, cross water cavity for other three and continue to keep filtration condition, after this crosses water cavity backwash end, just get back to filtration condition, then clean one by one other three and cross water cavity, circulation flushing all washes and is a flushing cycle for one time according to the order of sequence.

Claims (1)

1. slight irrigation full-automatic back washing sand filter, it includes the sand filtering tank, it is characterized in that: have two sand filtering tanks to be installed in parallel in respectively on the pair of brackets, parallel longitudinal is provided with two filter cylinders respectively in each sand filtering tank, a filter core is housed respectively in each filter cylinder, go out tank body at a distal process of each filter cylinder and be provided with a blind flange, the other end at each filter cylinder leads to respectively a delivery port outside tank body, pipeline at each delivery port is separately installed with a stop valve and a Pressure gauge, on the filter core of each blind flange one end, a handle is installed in respectively at filter cylinder, the middle part is horizontally installed with respectively a dividing plate in filter tank, upwards lead to respectively a water inlet and a sand loading mouth at the filter tank top on dividing plate both sides, in each water inlet, be respectively equipped with the sprinkler of enlarged diameter, with arm a backwash control valve is installed respectively in each water inlet, the arm other end of each backwash control valve is connected in parallel respectively on the water inlet pipe, on each backwash control valve, in water inlet, be connected with filler pipe respectively, the upper end of each backwash control valve is connected on the blow-off pipe, be respectively equipped with stop valve at blow-off pipe and water inlet pipe, be respectively equipped with a sand removing hole in the bottom surface, dividing plate both sides of each filtering tank.

Images