CN2117198U

CN2117198U - Differential conversion auto-filter

Info

Publication number: CN2117198U
Application number: CN 92200372
Authority: CN
Inventors: 刘宝通; 周恩祥; 高宝昌
Original assignee: CANGZHOU ELECTRODIALYSIS EQUIP
Current assignee: CANGZHOU ELECTRODIALYSIS EQUIP
Priority date: 1992-01-08
Filing date: 1992-01-08
Publication date: 1992-09-30

Abstract

The utility model relates to a pressure difference backwash automatic filtration machine. Thick and thin mesh filtration screens are arranged in a filtration bucket, an impurity collector is arranged in the thin mesh filtration screen, and the filtration bucket is connected with a cleaning control valve and a discharge valve via a pipe line. After raw water is filtered by the thick and thin mesh filtration screens, the raw water flows out from a water outlet connection. When blocked impurities on the filtration screens are increased, pressure difference is generated in the filtration bucket. By the cleaning control valve and the discharge valve, the impurity collector is operated to remove impurities, and the filtration machine automatically and circularly carries out filtration and cleaning. The filtration machine has the advantages of energy saving, strong impurity absorbing capability, high efficiency and convenient installation and operation, being suitable for various kinds of water treatment.

Description

Differential conversion auto-filter

The utility model belongs to a kind of filter, particularly a kind of pressure reduction back-washing type full-automatic filter.

The structure of the filter that impurity and suspension adopt in the filtering water all is to be made of lauter tub, filter screen, water inlet pipe and water outlet pipe, backwash tube at present, also needing of having installed main equipments such as air compressor, and the impurity of Screen Out on filter screen all needs left alone without help machine manually to clean in the filter process.Its weak point is: filter work also needs to be equipped with complicated electrical control equipment, consumes energy; It is all inconvenient to install and use maintenance; Left alone without help machine manually cleans, and labour intensity is big, and efficient is low; The cost height.

The purpose of this utility model is to overcome weak point of the prior art and a kind of pressure reduction back-washing type full-automatic filter is provided.

The purpose of this utility model is achieved in that

The structure of pressure reduction back-washing type full-automatic filter is: have water diversion joint, medial side wall to have in the lauter tub of water out adapter at the upper end side wall, the coarse net mesh filter screen is equipped with on its top,, the fine mesh filter screen is equipped with at the middle part, the bottom is the sluicing chamber, and upper, middle, and lower part is mutually every putting.In the fine mesh filter screen at its middle part the impurity collector that an end stretches into the sluicing chamber is housed, its end is connecting piston by piston rod, and the other end of piston is connecting purge control valve by defeated pressure pipe, and its valve is connected with lauter tub by defeated pressure pipe again.Sidewall also is equipped with drain valve in the sluicing chamber of lauter tub, and drain valve is connected with purge control valve by defeated pressure pipe.

The structure of impurity collector is, Qi Bishang has the impurity collection hole, and the end that gatherer stretches into the sluicing chamber is equipped with the jetting oar in the jetting hole that has symmetry on it.

The structure of drain valve is, the top in the valve cylinder with discharge opening and neck seal is fixed with spring, and the other end of spring is connected with valve rod by the diaphragm that is packed in the valve cylinder, and the other end of valve rod is equipped with the valve block that is sealed and matched with discharge opening.

The structure of purge control valve is, adjust a chain for binding criminals silk indoor being equipped with of the lattice of valve body internal upper part, adjust the screw lower end spring be housed, the other end of spring with its on sealing gasket is housed thimble one end be connected, the other end of thimble stretches into the lattice chamber and is contained in the interior diaphragm of valve body and is connected.The both sides of valve body have towards the former aquaporin of lattice chamber and filtered water passage.The indoor connecting rod that is installing diaphragm and sealing gasket on it that is equipped with of lattice of bottom in the valve body, have towards the hydraulic pressure output channel of lattice chamber and drainage gallery and the hydraulic pressure supplementing water passage that communicates with it in valve body lower portion one side, the opposite side of valve body lower portion has filtration supplementing water passage that the dative chamber communicates and the passage that connects upper and lower lattice chamber.

Description of drawings is as follows:

Fig. 1 is the filtering machine structure schematic diagram.

Fig. 2 cleans view automatically for filter.

Fig. 3 is the impurity collector stereogram.

Fig. 4 is the impurity collector fundamental diagram.

Fig. 5 is the purge control valve structural representation.

Below in conjunction with accompanying drawing the utility model embodiment is described in further detail:

On lauter tub 1 upper end sidewall, be fixed with water diversion joint 2, be fixed with water out adapter 3 on the sidewall of middle part, the lauter tub internal upper part is equipped with coarse net mesh filter screen 4, and fine mesh filter screen 5 is equipped with at the middle part, its underpart is sluicing chamber 6, and coarse net mesh filter screen, fine mesh filter screen and sluicing chamber three parts are every configuration state.The impurity collector 7 that one end stretches into the sluicing chamber is housed in the fine mesh filter screen, the structure of impurity collector as shown in Figure 3, its

outer wall

8,9,10,11 places are the impurity collection hole, its end that stretches into the sluicing chamber is equipped with jetting oar 12, has the

jetting hole

13,14 of two reverse symmetry on the jetting oar.The jetting oar is connecting piston 16 by piston rod 15, and piston is connecting purge control valve 19 by defeated

pressure pipe

17,18 again, and purge control valve is connected with water diversion joint with lauter tub respectively by defeated

pressure pipe

20,21,22 again.Drain valve 23 is housed on the lauter tub lower sides.The structure of its drain valve is to be that discharge opening, 25 places are fixed with spring 27 for the top in the valve cylinder 26 of sealing eck at 24 places, the other end of spring is connecting valve rod 29 by the diaphragm 28 that is packed in the valve cylinder, the other end of valve rod is equipped with the valve block 30 that is sealed and matched with discharge opening, and drain valve also is connected with lauter tub with purge control valve respectively by defeated pressure pipe 31,32.The structure of purge control valve is to be equipped with to adjust screw 35 in the lattice chamber 34 of valve body 33 internal upper parts, the lower end of adjusting screw is connected with spring 36, the other end of spring with its on the thimble 38 of sealing gasket 37 is housed an end be connected, the other end of thimble stretches into lattice chamber 39 and the diaphragm 40 that is contained in the valve body is fixedlyed connected by clamping plate.The both sides on valve body top have towards lattice chamber 39 and the filtered water passage and the former aquaporin that are connected with defeated pressure pipe 20,22.In the lattice chamber,

bottom

41,42,43 connecting rod 47 that is installing

diaphragm

44,45 and sealing gasket 46 on it by clamping plate is housed in the valve body, valve body lower portion one side has the hydraulic pressure output channel that is connected with defeated pressure pipe 18 towards lattice chamber 41, and have a drainage gallery that is connected with defeated pressure pipe 31 towards lattice chamber 43, and hydraulic pressure supplementing water passage that communicate with it and that be connected with defeated pressure pipe 17, the opposite side of valve body lower portion has dative chamber 43 filtration supplementing water passages that communicate and that be connected with defeated pressure pipe 21, and connects the passage 48 of

lattice chamber

34 and 42.

The operation principle of this filter is: former water flows into from water diversion joint 2, filters through coarse net mesh filter screen 4, filters through fine mesh filter screen 5 again, flows out to water consumption device from water out adapter 3 then.When the impurity of Screen Out does not reach the standard that needs cleaning on filter screen in the filter process, hydraulic pressure is in a basic balance in the lauter tub, and its hydraulic pressure is delivered to purge control valve 19 by defeated pressure pipe 20, and former water also is input to purge control valve from defeated pressure pipe 22 simultaneously, this moment, diaphragm 40 was motionless because of no pressure reduction.From lauter tub through defeated pressure pipe 21 and filter the supplementing water passage and enter water in the control valve lattice chamber 43, a part is given the drain valve supplementing water through defeated pressure pipe 31, a part promotes piston and rises in hydraulic pressure supplementing water passage and defeated pressure pipe 17 are delivered to the cylinder body of piston 16, gatherer 7 is promptly promoted to rise by piston rod 15.Close because of drain valve 23 this moment, and the water of sluicing chamber can not release, so gatherer 7 does not rotate.Former water constantly flows into, and filtered water continuously outflows, impurity constantly by Screen Out on filter screen, this moment be filter normal filtration running status (as shown in Figure 1).

Because the impurity of Screen Out increases gradually on the

filter screen

4,5, and it is not smooth to move the water to flow into, flow out filter screen, cause the inside and outside differential water pressures of filter screen, this moment, the filtered water in the lauter tub also was delivered to lattice chamber 39 in the purge control valve 19 by defeated pressure pipe 20 and filtered water passage, and former water also is transported in the control valve from defeated pressure pipe 22 and former aquaporin; Because former water pressure is greater than filtered water pressure, thereby diaphragm 40 is moved up, promote thimble 38 compression springs 36 and drive sealing gaskets 37 and open; Filtered water stream in the lattice chamber 39 chamber 34 that accords with regular rules flows into lattice chambers 42 from passage 48, promotes diaphragm 45 and move down, thereby drivening rod 47 moves down, connecting rod move down and drive diaphragm 44 and sealing gasket 46 moves down a little, valve port is opened a little.This moment, the water of drain valve 23 upper ends entered lattice chamber 43 in the valve body by defeated pressure pipe 31 and drainage gallery, discharge from valve port, the pressure of drain valve upper end is reduced, the filtered water of lauter tub supplies water to the drain valve lower end by defeated pressure pipe 32, diaphragm 28 is moved up, and compression spring 27 drives on valve rod 29 and the valve block 30 and moves, and discharge opening 24 is opened a little, the indoor water that sluices can be discharged on a small quantity by discharge opening 24, thereby sluicing chamber 6 internal pressures reduce.Former water constantly flows into lauter tub, make lauter tub internal upper part pressure greater than the sluicing chamber pressure, move down, drive piston and also move down thereby promote impurity collector, water in the compression piston cylinder enters lattice chamber 41 in the cleaning control valve body by defeated pressure pipe 18 and hydraulic pressure output channel.Move down thereby promote diaphragm 44, drivening rod 47 and sealing gasket 46 move down, and valve port is all opened.This moment, the pressure at drain valve 23 tops all released by defeated pressure pipe 31 and drainage gallery.Unnecessary water also enters lattice chamber in the valve body by defeated pressure pipe 17 and hydraulic pressure supplementing water passage in the piston cylinder simultaneously, discharges from valve port.Because drain valve 23 tops do not have pressure, spring all compresses, and valve block 30 is risen, and discharge opening 24 is all opened.Water in the sluicing chamber 6 is got rid of from discharge opening in a large number, part water (about about 30%) in the lauter tub flows into the bottom of impurity collector through the

impurity collection hole

8,9,10,11 of impurity collector, outside the

jetting hole

13,14 of jetting oar 12, penetrate, because jetting hole reverse symmetry jetting makes impurity collector rotate by current spray power and moves down.Because the rotation of impurity collector makes between the impurity collection hole outside and the filter screen 5 and forms a low pressure core point (as P point among Fig. 5).At this moment, the filtered water in the filter screen outside oppositely flows in the filter screen, the impurity of this current flushing Screen Out on filter screen, all flow to the low pressure core space, enter impurity collector through the impurity collection hole and flow downward, penetrate, discharge through the discharge opening of drain valve again from the jetting hole of jetting oar.Because the water of sluicing chamber is constantly discharged, its internal pressure is reduced.Impurity collector is displaced downwardly to bottom, sluicing chamber under the pressure that flows into former water promotes.This process is that filter cleans state (as shown in Figure 2) automatically.

Constantly clean with impurity on the filter screen, the interior pressure reduction of lauter tub is decreased to impurity gradually and cleans up, and current are unimpeded, and pressure reduction is eliminated.Hydraulic pressure pressure reduction in defeated

pressure pipe

20,21 input control valve bodies is also eliminated, and diaphragm 40 sets back, and drives thimble, and extension spring 36 also sets back sealing gasket 37, and lattice chamber 34 is closed.Meanwhile,, promote piston and also move to the piston cylinder bottom because impurity collector moves to bottom, sluicing chamber, thus defeated pressure pipe 18 no-outputs, the diaphragm 44 in the purge control valve is set back, drivening rod makes diaphragm 45 and sealing gasket 46 full recovery original positions.Filtered water is given lattice chamber 43 moisturizings in the purge control valve by the filtration supplementing water passage of defeated pressure pipe 21 and control valve, its water is given the top water-filling of drain valve 23 again by drainage gallery and defeated pressure pipe 31, its pressure is increased, promoting diaphragm 28 moves down, its spring is extended, promote valve rod drive valve block and move down, its discharge opening is closed.Simultaneously the filtration supplementing water in the control valve lattice chamber 43 are sent in the piston cylinder by hydraulic pressure supplementing water passage and defeated pressure pipe 17 again, rise thereby promote piston, make the impurity collector return that also rises, and promptly enter next filtration state again.Go round and begin again like this, realize filtering and oppositely clean Automatic Control.

The utility model compared with prior art has the following advantages:

Save the energy, this filter filters, cleaning does not all need extraneous any energy of supplying with, and only utilizes water source pressure reduction to move power as equipment; Full-automatic control, reliable operation; Do not need left alone without help machine The artificial cleaning, thereby production efficiency height; Install and use easy to maintenancely, cost is low; Removal of impurity ability is strong. Be widely used in the various water treatments, also can make the cleaning equipment of sewage, water for industrial use.

Claims

1, a kind of pressure reduction back-washing type full-automatic filter, by lauter tub, filter screen, water inlet pipe and water outlet pipe constitutes, it is characterized in that: water diversion joint is arranged at the upper end side wall, the medial side wall has in the lauter tub of water out adapter, the coarse net mesh filter screen is equipped with on its top, the fine mesh filter screen is equipped with at the middle part, the bottom is the sluicing chamber, on, in, three parts are mutually every putting down, in the fine mesh filter screen at its middle part the impurity collector that an end stretches into the sluicing chamber is housed, its end is connecting piston by piston rod, the other end of piston is connecting purge control valve by defeated pressure pipe, its valve is connected with lauter tub by defeated pressure pipe again, sidewall also is equipped with drain valve in the sluicing chamber of lauter tub, and drain valve is connected with purge control valve by defeated pressure pipe.

2, according to the said filter of claim 1, it is characterized in that: the structure of impurity collector is, Qi Bishang has the impurity collection hole, and the end that gatherer stretches into the sluicing chamber is equipped with the jetting oar in the jetting hole that has symmetry on it.

3, according to the said filter of claim 1, it is characterized in that: the structure of drain valve is, top in the valve cylinder with discharge opening and neck seal is fixed with spring, the other end of spring is connected with valve rod by the diaphragm that is packed in the valve cylinder, and the other end of valve rod is equipped with the valve block that is sealed and matched with discharge opening.

4, according to the said filter of claim 1, it is characterized in that: the structure of purge control valve is, at the indoor adjustment screw that is equipped with of the lattice of valve body internal upper part, adjust the screw lower end spring is housed, the other end of spring with its on sealing gasket is housed thimble one end be connected, diaphragm in the other end of thimble stretches into the lattice chamber and is contained in valve body is connected, the both sides of valve body have towards the former aquaporin of lattice chamber and filtered water passage, the indoor connecting rod that is installing diaphragm and sealing gasket on it that is equipped with of lattice of bottom in the valve body, have hydraulic pressure output channel and drainage gallery in valve body lower portion one side towards the lattice chamber, and the hydraulic pressure supplementing water passage that communicates with it, the opposite side of valve body lower portion has on the filtration supplementing water passage and connection that the dative chamber communicates, the passage of following lattice chamber.