CN2227515Y

CN2227515Y - Automatic self-cleaning water filter

Info

Publication number: CN2227515Y
Application number: CN95230880U
Authority: CN
Inventors: 吕洪铎
Original assignee: DALIAN HUAFENG DEVELOPMENT Co
Current assignee: DALIAN HUAFENG DEVELOPMENT Co
Priority date: 1995-04-19
Filing date: 1995-04-19
Publication date: 1996-05-22
Anticipated expiration: 2005-04-19

Abstract

The utility model relates to an automatic self-cleaning water filter for industrial cycle water, which is composed of a tank body, a sealing head, a filter column, a partition board, a speed reducer, a transmission shaft, a back flushing suction tube, an electric ball valve, a pressure meter, etc. The partition board divides a cavity into a clear water cavity and a corrupted water cavity, the filter column is arranged in the clear water cavity, a back flushing mechanism is arranged in the corrupted water cavity, and the filter column is welded on a multi-edged frame by a steel wire with trapezoidal sections. One filtration gap and one slag-holding V-shaped area are formed between every two adjacent steel wires. The utility model has the functions of continuous water supply, automatical operation and self cleaning, having advantages of large filter area, high efficiency, high precision, small volume, light weight, high strength of the filter column and long service life.

Description

Automatic self-cleaning water filter

The utility model provides a kind of filter plant, is mainly used in the filter cleaner of industrial circulating water.

The filter plant of present China industrial circulating water, what mainly use is filtrate formula filtering tank, it is to fill cobble, anthracite and the quartz sand filter as filtrate in jar.Its shortcoming is that volume is big, and flow is little, and filtrate need be changed, the cost of use height, and resistance is decreased big, the backwash difficulty, inconvenient operation, it also runs filtrate easily and makes pipeline blockage.

The purpose of this utility model provides a kind of filtering accuracy height, the resistance damage is little, and the water filter of automatic self-cleaning function is arranged.

The purpose of this utility model is achieved in that automatic self-cleaning water filter, include tank body (11), on, low head (20), (6), water inlet (10) and delivery port (28) are arranged on the tank body, it is muddy water chamber and clear water chamber that its special character is to have in the tank body dividing plate (27) that it is divided into two chambeies, Filter column (14) is installed in the clear water chamber, have hole on the dividing plate with the Filter column equal number, Filter column of each Kong Shangan, backwash mechanism is installed in the muddy water chamber, it is by backwash suction pipe (13), deslagging elbow (9) and deslagging straight tube (7) are formed, backwash suction pipe kink is on deslagging elbow (9), a spring (12) is established in outer end at the muddy water side backwash suction pipe (13) of dividing plate, be provided with a power transmission shaft (17) in the tank body, power transmission shaft one end connects reductor (25) by clutch, deslagging straight tube upper end links to each other with deslagging elbow (9) through deslagging threeway (8), slag bend pipe (2) runs in the lower end, another termination electrical ball valve (1) of deslagging bend pipe, two Pressure gauges (16) are installed on the tank body, are linked to each other with the muddy water chamber with the clear water chamber respectively.

Compare with prior art, the utlity model has following advantage:

1, can continuous water supply, need not to shut down and just can carry out the self-cleaning Filter column.

2, use high accuracy, high strength Filter column, have not plug-hole, the advantage of easy cleaning can be used repeatedly, and cost of use is low.

3, filter area is big, and effective filtration area is 2.5-5 a times of inlet area, and resistance is decreased little, and flow is big, the efficient height.

4, can work automatically, it is to come controlled filter and backwash process by differential pressure controller, but also manual operation.

5, its volume is little, in light weight, to factory building and the no specific (special) requirements in basis.

But 6, its self-cleaning Filter column utilizes filtration clear water of the present utility model to realize backwash, need not other backwash means or establishes the backwash facility in addition.

Detailed structure of the present utility model is provided by drawings and Examples.

Fig. 1 is the structural representation of the automatic self-cleaning water filter of vertical notch cuttype.

Fig. 2 is the structural representation of vertical through-type automatic self-cleaning water filter.

Fig. 3 is the structural representation of the automatic self-cleaning water filter of horizontal bypass type.

Fig. 4 is the structural representation of the automatic self-cleaning water filter of vertical flat cover.

Fig. 5 is the structural representation of Filter column.

Fig. 6 is the A-A cutaway view along Fig. 5.

Fig. 7 is the local enlarged diagram of Fig. 5.

As Fig. 1, the water filter of vertical structure, on put reductor, by tank body 11 and last

low head

20,6 compositions such as grade, water inlet 10 and delivery port 28 are arranged for ladder, water inlet is following, delivery port is last, there is a diaphragm plate 27 that tank body is divided into two chambeies up and down in the tank body, cavity of resorption is the muddy water chamber, epicoele is the clear water chamber, many ribs Filter column 14 is installed in the epicoele, by hold-down bolt 19 Filter column is fixed on diaphragm plate, have hole on the diaphragm plate with the Filter column equal number, Filter column of each Kong Shangan, each hole links to each other with the Filter column inner chamber, backwash mechanism is installed in the cavity of resorption, and it is by backwash suction pipe 13, deslagging elbow 9, deslagging threeway and deslagging straight tube 7 are formed, backwash suction pipe kink is on the deslagging elbow, pressure by spring 12 is crushed under the dividing plate, and backwash mechanism rotates around the center under power transmission shaft 17 drives, backwash mechanism is divided into double Filter column and two kinds of forms of single Filter column, deslagging straight tube lower end is equipped with lower skeleton envelope 5, and deslagging bend pipe 2 is housed in the low head lower end and inner straight tube communicates, electrical ball valve 1 of another termination of deslagging bend pipe.Transmission mechanism is made up of reductor 25, overload-release clutch 24 and power transmission shaft, reductor is twin-stage pin pendulum reductor, and overload-release clutch is the steel ball and spring clutch, and the power transmission shaft upper end links to each other with overload-release clutch, the lower end links to each other with backwash mechanism, drives backwash mechanism by power transmission shaft.The tank body front is equipped with two Pressure gauges 16 and a differential pressure controller 15, differential pressure controller links to each other with electric cabinet, measure the pressure in muddy water chamber and clear water chamber respectively, differential pressure controller is monitored the pressure differential in muddy water chamber and clear water chamber automatically, when this pressure differential reached setting value, signal was given electric cabinet, realized the backwash circulation automatically, also can manually start reductor, open electrical ball valve simultaneously and carry out backwash according to the pressure differential in muddy water chamber and clear water chamber.21 and 3 are respectively upper and lower seal receptacle among the figure, and 23 and 4 are respectively upper and lower silk braid, and 18 is nut, and 22 are the upper skeleton envelope, and 26 is motor, and 29 is hand hole, and 30 is mud hole, and 31 is tube connector, and 32 is shaft, and 33 are the post lid, and 34 is stainless steel wire, and 35 is many ribs skeleton.

The Filter column of above-mentioned automatic self-cleaning water filter is that many ribs Filter column is to be twined by the trapezoid cross section stainless steel wire to be welded on many ribs skeleton, forms a V-type district of filtering a slit and a solid-holding between every adjacent two steel wires.

The water inlet 10 of above-mentioned automatic self-cleaning water filter and delivery port 28 can be located at tank body one side, water inlet 10 and delivery port 28 also can be ladder to be arranged, promptly water inlet is following, and delivery port is last, entery and delivery port also can be a straight line and arrange that entery and delivery port also can be located at the optional position of tank body.

The operation principle of water filter is, the muddy water of certain pressure, deliver to the inlet of water filter through pipe network, enter water filter muddy water chamber, enter into the inner chamber of Filter column again by the perforate on the diaphragm plate, greater than the mechanical admixture that filters the slit, just be trapped within the V-type district, the accumulation of impurity forms a cake layer, this also may be trapped the impurity less than the slit, thereby filtering accuracy is further improved, and the clear water by all Filter columns collects in the clear water chamber, deliver to the clear water pipe network from delivery port and to go, Here it is filter process.When impurities accumulation arrives to a certain degree, can lose by build-up of pressure, the pressure in clear water chamber is lower than the pressure in muddy water chamber, promptly forms pressure differential.When this pressure reduction reached unallowable degree, when perhaps reaching setting value, differential pressure controller meeting output electric signal by electric cabinet, started reductor and makes the rotation of backwash suction pipe.Simultaneously, open electrical ball valve.At this moment the backwash suction pipe can be sequentially be communicated with the inner chamber of each Filter column, just makes the Filter column chamber pressure identical with atmospheric pressure, and the clear water cavity pressure will be greater than the Filter column chamber pressure, and the water in clear water chamber flows backwards from the slit of Filter column.Because pressure is bigger, thereby the flow velocity that flows backwards is also very high, can wash away the impurity that is trapped in the V-type district along scum pipe, reaches the purpose of backwash.When pressure reduction recovers just often, electric cabinet is closed reductor and electrical ball valve automatically.Here it is backwash process.

Because each post is the order flushing, two Filter columns is arranged at the cleaning state at most at synchronization, and other Filter column is realized continuous water supply still in work.

Fig. 2 is vertical through-type.

This version is vertical structure, and water inlet and delivery port are in line.

Fig. 3 is horizontal bypass type.

This version is horizontal, and water inlet and delivery port are all above tank body.Be applicable to the occasion that height space is limited.

Fig. 4 is vertical flat cover.

This version upper cover is a flat lid type, has the hole that can load and unload Filter column, and characteristics are that the loading and unloading Filter column is convenient.Be applicable to that Filter column need take out the occasion of cleaning, such as situations such as easy foulings.

Above-mentioned four kinds of versions are applicable to all-environment installation needs.

Claims

1,-kind of automatic self-cleaning water filter, include tank body (11), on, low head (20), (6), water inlet (10) and delivery port (28) are arranged on the tank body, it is characterized in that having in the tank body dividing plate (27) that it is divided into two chambeies is muddy water chamber and clear water chamber, Filter column (14) is installed in the clear water chamber, have hole on the dividing plate with the Filter column equal number, Filter column of each Kong Shangan, backwash mechanism is installed in the muddy water chamber, it is by backwash suction pipe (13), deslagging elbow (9) and deslagging straight tube (7) are formed, the backwash suction pipe is drawn together and is enclosed within on the deslagging elbow (9), a spring (12) is established in outer end at the muddy water end backwash suction pipe (13) of dividing plate (27), be provided with a power transmission shaft (17) in the tank body, power transmission shaft one end connects reductor (25), and deslagging straight tube upper end links to each other with deslagging elbow (9) through deslagging threeway (8), slag bend pipe (2) runs in the lower end, another termination electrical ball valve (1) of deslagging bend pipe is installed two Pressure gauges (16) on the tank body, link to each other with the muddy water chamber with the clear water chamber respectively.

2, automatic self-cleaning water filter according to claim 1 is characterized in that a differential pressure controller (15) also is installed on the tank body, links to each other with electric cabinet.

3, automatic self-cleaning water filter according to claim 1, it is characterized in that described Filter column is that many ribs Filter column is to be twined by the trapezoid cross section stainless steel wire to be welded on many ribs skeleton, forms a V-type district of filtering a slit and a solid-holding between every adjacent two steel wires.

4, automatic self-cleaning water filter according to claim 1, it is characterized in that described water inlet (10) and delivery port (28) can be located at tank body one side, water inlet (10) and delivery port (28) also can be ladder and arrange, be that water inlet is following, delivery port is last, entery and delivery port also can be a straight line and arrange that entery and delivery port also can be located at the optional position of tank body.