CN2699977Y

CN2699977Y - Net belt type vacuum filter

Info

Publication number: CN2699977Y
Application number: CN 200420019359
Authority: CN
Inventors: 白晓浪
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-07
Filing date: 2004-01-07
Publication date: 2005-05-18
Anticipated expiration: 2014-01-07

Abstract

The utility model relates to a solid-liquid separator, in particular to a structure improvement of a net belt type vacuum filter. The structure of a net belt type vacuum filter comprises a machine frame and a vacuum tank arranged on the machine frame. The vacuum tank is connected with a vacuum balance automatic liquid discharge tank, on which a vacuum pump is connected. The structure improvement of a net belt type vacuum filter is characterized in that: a net belt is provided above the vacuum tank; the net belt is supported by a plurality of tension rolls; filter cloth is arranged on the machine frame; the filter cloth is closely stuck onto the periphery of the net belt, and is supported by a plurality of tension rolls; the net belt and the filter cloth are driven by a driving wheel arranged on one end of the machine frame to make the synchronized motion. Therefore, the structure improvement of a net belt type vacuum filter has high automaticity, fast filtration velocity, reasonable structure of the filter cake, small resistance force, reasonable design, simple structure, high solid-liquid dewatering ability, visible filter effect, stable running and small noise; the thin layer rapid filtration can be carried out, the efficiency is obviously improved; the no-load phenomenon does not exist in the filtering process.

Description

Network Belt Type Vacuum Filter

Technical field

The utility model relates to a kind of equipment for separating liquid from solid, particularly relates to a kind of structural improvement of guide belt vacuum filter; It is higher to be particularly useful for viscosity, the filtration of the material that the quick thin bed filtration of the ore pulp that granularity is thinner and precipitation are comparatively fast solidified.

Background technology

The present horizontal vacuum continuous filter that generally uses, the main belt structure that adopts, with the filter cloth is filter medium, utilize whole environment rubber strip as vacuum chamber, filter cloth and rubber strip move simultaneously, the solid-liquid material is horizontally distributed on the filter medium, makes full use of slip gravity amount pull of vacuum and realizes that solid filter separates.Has production efficiency than higher, structure advantage such as compactness comparatively.But its course of work operation is steady inadequately, and noise is bigger, and operating efficiency is very not high yet.In order further to improve the operating efficiency of filter, improve automaticity and increase filter effect, people have carried out various explorations.

For example, Chinese patent literature has been announced a kind of belt vacuum filter (application number: 02288341.X), comprise main box, power set, liquid reserve tank etc., it is characterized in that below main box, having additional frame, filter cloth cleaning device, filter cloth tensioning apparatus, support roller, filter cloth deviation correcting device are installed in frame, at feed end charging changed course roller is installed, compress roller and line with rubber roller is installed at discharge end; Filter cloth is by thin upper strata filter cloth and thick superimposed composition of lower floor's filter cloth, lower floor's filter cloth of annular around the line with rubber roller, outside alter course roller, filter cloth cleaning device, filter cloth tensioning apparatus, filter cloth deviation correcting device, outside alter course roller, charging changed course roller and periodic duty.Filter capacity is strong, filter quality good, the filter cloth consumption is few, the levels filter cloth can not skid, the input and output material end adopts rolling friction to reduce advantages such as resistance thereby have.But because its fluctuations of vacuum degree is bigger, thereby filter effect is not satisfactory.And filter cloth has one section sky to return stroke when taking off liquid, and filter cloth can't continuous wash; Cause operating efficiency very not high, filter cloth is short service life; Defectives such as its cake moisture is too high, the rate of recovery is low.

Summary of the invention

The utility model mainly is that solution existing in prior technology vacuum waviness is big, has one section sky to return stroke when filter cloth takes off liquid, and operating efficiency is very not high, the technical problem that use cost is high.

The utility model has solved also that the existing cake moisture of prior art is too high, the rate of filtration is slow, and filter cloth is short service life, the technical problem that filter quality is not high.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: comprise frame, if with the vacuum tank on it, vacuum tank is irritated with vacuum balance automatic drain and is linked to each other, on irritating, vacuum balance automatic drain is connected with vavuum pump, it is characterized in that described vacuum tank top is provided with guipure, described guipure is supported by some idler rollers; Be provided with filter cloth on frame, described filter cloth is close to the guipure periphery, and is supported by some idler rollers; Described guipure and filter cloth are synchronized with the movement by the drive wheel of establishing with frame one end.

The utility model adopts guipure to replace the rubber strip of price comparison costliness of the prior art, and filter cloth is along with guipure is walked about continuously reposefully, and it is low to have a cost, and transmission is effective, has removed the effect that sky when filter cloth takes off liquid returns stroke.The guipure is here made by corrosion-resistant material, need not to change fully when local guipure damages, and only need repair the part to get final product.

As preferably, described filter cloth top is provided with feeding device, and described feeding device is made as the fishtail loading hopper, in some guiding ribs are arranged; The plane, place, working region that is higher than filter cloth at the filter cloth idler roller of feeding device one side.The guiding rib can guarantee that slip is distributed on the strainer equably.The working region that the filter cloth idler roller is higher than filter cloth can guarantee that slip flows towards the direction of walking about of filter cloth.

As preferably, described feeding device is positioned near the vacuum tank start position, and its incline direction is identical with the moving direction of filter cloth.In the ordinary course of things, the flow direction that adds slip is opposite with the direction of walking about of filter cloth, and slip arrives the effect that can at once not be subjected to vacuum on the filter cloth like this, form a natural subsidence district, preferentially sedimentation of coarse granule avoids destroying filter cake, thereby can improve the speed and the quality of filtration.

As preferably, described vacuum balance automatic drain is irritated in check valve and is linked to each other; Described guipure is netted braiding structure.After filtrate in vacuum balance automatic drain is irritated reached certain pressure, one-way valve opens was with filtrate release wherein; The air that vacuum balance automatic drain is irritated interior is discharged in vavuum pump work simultaneously.

In order to reach better filter effect, prolong the service life of filter cloth, as preferably, be provided with filter cloth drip washing groove near the inboard of described driving wheel.

As preferably, the top of described filter cloth is provided with the filter cloth spray equipment, and the shower nozzle of described spray equipment and the distance of filter cloth are not less than 100mm.After filtration is finished, filter cloth is sprayed at once, not only help keeping the cleaning of filter cloth, and improved the operating efficiency of complete machine greatly.

As preferably, described filter cloth drip washing groove links to each other with the filter cloth spray equipment by returning water pump.

In addition, according to different slips the speed of service of guipure and filter cloth is adjusted, reaching filter effect preferably, as preferably, the speed of service of described guipure and filter cloth is 0.2～6.0m/min.

Therefore, the utlity model has following characteristics: 1, automaticity height: material washs, takes off slag from blanking, vacuum dehydration, filter cake to carry out incessantly synchronously to the filter cloth cleaning; 2, the rate of filtration is fast: material is by the settling zone, and bulky grain is at bottom, and granule is on the upper strata, and filter cake texture is reasonable, and the logical resistance of filtrate is little, can carry out thin layer and filter fast; It is 3, reasonable in design, simple in structure,, the solid-liquid dehydration ability is big, and filter effect is obvious; 4, efficient obviously improves: filter process does not have unloaded phenomenon, operates steadily, and noise is little.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the present utility model.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: as shown in Figure 1, a kind of Network Belt Type Vacuum Filter comprises frame, if with the vacuum tank on it, vacuum tank is irritated with vacuum balance automatic drain and is linked to each other, and is connected with vavuum pump on vacuum balance automatic drain is irritated, and has check valve to control its interior liquid level.Vacuum tank 1 top is provided with the guipure 2 of netted braiding structure, and described guipure 2 is supported by some idler rollers 3; Be provided with filter cloth 5 on frame 4, described filter cloth 5 is close to guipure 2 peripheries, and is supported by some idler rollers 3; Described guipure 2 and filter cloth 5 are driven by the driving wheel of establishing with frame one end 6, are synchronized with the movement with 3.0m/min speed.Be provided with feeding device 7 above filter cloth 5, described feeding device is made as the fishtail loading hopper, in some guiding ribs are arranged; The plane, place, working region that is higher than filter cloth at the idler roller 3 of feeding device 7 one sides.Feeding device 7 is positioned near vacuum tank 1 start position, and its incline direction is identical with the moving direction of filter cloth 5.Near the inboard of driving wheel 6, be provided with filter cloth drip washing groove 10.The top of described filter cloth 5 is provided with filter cloth spray equipment 11, and the distance of the shower nozzle of described spray equipment and filter cloth 5 is not less than 100mm.Filter cloth drip washing groove 10 links to each other with filter cloth spray equipment 11 by returning water pump 12.

During work, slip is arranged on the filter cloth equably by feeding device, driving wheel drives guipure and filter cloth is synchronized with the movement to vacuum tank, under the effect of vacuum tank filtrate is guided to vacuum balance automatic drain and irritates.When filtrate reached a certain amount of, check valve was opened filtrate is wherein emitted, and the air that vacuum balance automatic drain is irritated interior is discharged in vavuum pump work simultaneously.Slip forms filter cake on filter cloth, after filter cake and filter cloth disengaging, filter cloth cleans through filter cloth drip washing groove the time, finishes the filtration of slip.

Claims

1. Network Belt Type Vacuum Filter, comprise frame, if with the vacuum tank on it, vacuum tank is irritated with vacuum balance automatic drain and is linked to each other, on irritating, vacuum balance automatic drain is connected with vavuum pump, it is characterized in that described vacuum tank (1) top is provided with guipure (2), described guipure (2) is supported by some idler rollers (3); Be provided with filter cloth (5) on frame (4), described filter cloth (5) is close to guipure (2) periphery, and is supported by some idler rollers (3); Described guipure (2) and filter cloth (5) are driven by the driving wheel of establishing with frame one end (6), are synchronized with the movement.

2. Network Belt Type Vacuum Filter according to claim 1 is characterized in that described filter cloth (5) top is provided with feeding device (7), and described feeding device is made as the fishtail loading hopper, in some guiding ribs are arranged; The plane, place, working region that is higher than filter cloth at the idler roller (3) of feeding device (7) one sides.

3. Network Belt Type Vacuum Filter according to claim 2 is characterized in that described feeding device (7) is positioned near vacuum tank (1) start position, and its incline direction is identical with the moving direction of filter cloth (5).

4. according to claim 1 or 2 or 3 described Network Belt Type Vacuum Filters, it is characterized in that described vacuum balance automatic drain filling (8) links to each other with check valve (9); Described guipure (2) is netted braiding structure.

5. according to claim 1 or 2 or 3 described Network Belt Type Vacuum Filters, it is characterized in that being provided with filter cloth drip washing groove (10) near the inboard of described driving wheel (6).

6. Network Belt Type Vacuum Filter according to claim 4 is characterized in that being provided with filter cloth drip washing groove (10) near the inboard of described driving wheel (6).

7. according to claim 1 or 2 or 3 described Network Belt Type Vacuum Filters, it is characterized in that the top of described filter cloth (5) is provided with filter cloth spray equipment (11), the distance of the shower nozzle of described spray equipment and filter cloth (5) is not less than 100mm.

8. Network Belt Type Vacuum Filter according to claim 4 is characterized in that the top of described filter cloth (5) is provided with filter cloth spray equipment (11), and the distance of the shower nozzle of described spray equipment and filter cloth (5) is not less than 100mm.

9. according to claim 1 or 2 or 3 or 6 or 8 described Network Belt Type Vacuum Filters, it is characterized in that described filter cloth drip washing groove (10) links to each other with filter cloth spray equipment (11) by returning water pump (12).

10. according to claim 1 or 2 or 3 or 6 or 8 described Network Belt Type Vacuum Filters, it is characterized in that the speed of service of described guipure (2) and filter cloth (5) is 0.2～6.0m/min.