CN201105185Y

CN201105185Y - Sealed type pressurization ceramic vacuum filter device

Info

Publication number: CN201105185Y
Application number: CNU2007200329033U
Authority: CN
Inventors: 张伟晓
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-08
Filing date: 2007-10-08
Publication date: 2008-08-27
Anticipated expiration: 2017-10-08

Abstract

The utility model discloses a sealed pressurizing ceramic vacuum filter machine device, comprising a ceramic disk filter machine. A spire conveyor is connected with the unloading end of the frame of the ceramic disk filter machine, and part of the spire conveyor is arranged in the filter mass sealing layer. A sealing cover is connected with the big overflow component of the ceramic vacuum filter machine. A visible observation hole and a blowhole are arranged on the sealing cover, and the blowhole is connected with the air compressor by a pipeline. The addition of the closing and spire conveyor and the compressed air on the prior equipment basis can increase the filter pressure to achieve the purpose of energy-saving and consumption-reducing; the sealed pressurizing ceramic vacuum filter machine device has the advantages of simple structure, convenient use and operation, improving the processing capacity of the ceramic vacuum filter machine, and reducing the energy consumption and the filter plate consumption, and the pressurizing and the vacuum dual filter are achieved; the process ability can double the process ability of the equipment with less investment without increasing the area of the filter plate and the power of the vacuum pump on the original technical basis. The utility model is widely used for the mine concentration plants.

Description

Sealed pressure ceramic vacuum filtration machine

Technical field

The utility model relates to the solid-liquid filter, concrete relates to sealed pressure ceramic vacuum filtration machine.

Background technology

Filtration operation utilizes filter medium with solid-liquid in the material separately, fully reclaims the purpose mineral.Filter plant and material properties, process conditions, landline and equipment are closely related, and concentrate moisture content is too high, and not only contaminated environment but also increase power consumption in carrying the way causes down road technology smelting (chemical industry) the cost height of getting the raw materials ready simultaneously.Therefore effectively reduce concentrate moisture content and beneficiation cost, become one of Mineral Processing Engineering important issue, for making filter back concentrate moisture content reach road technological requirement down, most of smelting, chemical plant increase drying operation, but the seasoning energy consumption is big, cost is high, generally as far as possible need not, comparatively speaking, filtration is the dewatering of less expensive, can reduce freight, reduce environmental pollution and energy efficient, have than the large economy potentiality.

Filter plant totally is divided into vacuum and pressurization two classes, the rotating cylinder that has that vacuum types is commonly used is justified horizontal banding pattern etc., the pressurization class is commonly used press filtration, pressure vessel, squeezing, dynamic filtration and rotary-type etc., along with becoming increasingly conspicuous of energy shortage, resource dilution, water resource and environmental issue, the rapid emergence of biochemical industry material compound force field occurred and has crossed (pressure) filter.Bottom narrates typical equipments in vacuum and the pressurization two class filter equipment respectively.

Figure 1 shows that prior art conventional ceramic vacuum filter contour structures schematic diagram, such machine is used capillary ceramic plate and is made filter medium, and filtration mechanism has new breakthrough.According to different ore deposit property, the ceramic disk micropore can be adjusted between 0.3-8.0 micron (aperture bubble point pressure 35-933Kpa).Capillarity (the one, in bilge suction pipe, the 2nd, the water # in the holding tube stops air to pass through micropore) is not only arranged and do not allow air see through; Life cycle 2-3, filter disc sucks filter cake to air and replaces wherein moisture content, and vavuum pump is extracted water out and is not had air, and the complete machine energy consumption is a traditional filtering machine 10%; Main member has pulp tank, agitator, cylinder, potsherd, supersonic generator, acid dip pickle, scraper, vavuum pump and PLC assembly etc., and the work period is followed successively by filter cake formation, drying, scrapes and unload and potsherd flushing four-stage.Dry filter cake arrives and unloads cake doctor position 0.5-1.0mm and unloaded by force, potsherd before next circulation of beginning, by the filtrate water backwash 3-5s of head-tank, backwashing water 0.5-0.8Pa, after filtration, decompression and constant-voltage system reach constant voltage; Again in distributing valve enters ceramic wafer; Outwards flow through capillary; To remove residual filter cake and mediation micropore.Operation a period of time, ceramic plate and inside can be gathered certain backwashing water and be difficult to clean solids, must start purging system (pickling and ultrasonic wave clean, and both carry out synchronously usually).Ore pulp in the emptying groove is filled with water and is added oxalic acid or nitric acid simultaneously, and acid solution arrives ceramic plate by micropore, removes insoluble fluoride and other mineral in the micropore.For efficiently, fast cleaning and save chemical agent, remedy the Chemical cleaning deficiency, ultrasonic cleaning system can further be removed the obstinate attachment of ceramic plate.

Usually, such machine filter cake moisture content＜12%, production capacity＞450Kg/h, ceramic wafer increases with feed ore concentration, and production capacity increases, and moisture content raises, concentration＞57%, production capacity amplification is obvious.Filter cake moisture content significantly is lower than the traditional vacuum filter.Filtrate solid content＜5ppm, reduced ultra-fine grain internal circulating load in dewatering process flow, be beneficial to and improve the recycling water utilization rate and optimize grade and form, it has the characteristics of rate of departure height, (rate of filtration is fast, production capacity is high), separation accuracy height (filtrate contains low admittedly, filter cake moisture content is low) operational efficiency height (easily be automated, continuity, energy-conservation).

Pot type pressurization filter press, the press filtration (filtration) that is unfavorable for that productivity ratio improves and the pot type pressurization filter press of development will pressurize is squeezed, is dried up at the discontinuous filter press, operation such as automatic discharging is integrated in one maximum filtering area 144m ²Such machine is made up of pressurization press filtration, discharge, automatic control and system such as auxiliary, the pressurization press filteration system is made up of compression chamber, pressure filtration mechanism (or filtration) cabin inside strake transporter, blowback bellows chamber, flusher, main air compressor machine, oil pumping system, pump and valve etc., and discharge system is this office's key technology.By top storage bin, level-sensing device, upper lock gate, discharge bin, tail gates, gate gas-flow closure circle, discharge bin charge valve, vent valve etc. form, flusher (pressure 40Mpa) mainly provides pressure (hydraulic) water to liquid level gauge, axle envelope, filter medium and observation window, the press filtration function is handled and finished automatically to all constituents by control system.Advancing that slurry and filter cake unload all is to carry out automatically.Handle same floatation clean coal, pot type pressurization filter press filter cake moisture content 15.5%, production capacity 750Kg/h, common filter press are filter cake moisture content 24%, production capacity 300Kg/h.

Characteristics: 1. adopt the planet gyration mode, filter element is star configuration, can rotation can change around central shaft again, and 2. press filteration system (or filtration) is contained in the pressure vessel, guarantees discharging under certain pressure, independent airtight discharge device; 3. filter cloth or filter screen damage often and take place, and change cloth or filter element at every turn and must open air pressure tank; The space is limited in jar! Difficult in maintenance.4. faster than vacuum filtration motor speed, moisture content is low, production capacity is high; 5. weight is especially big, the manufacturing cost height, but production management is simpler than automatic pressure filter, and producing cost is low, is suitable for floatation clean coal and filters.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, uses with easy to operate, improves the disposal ability of ceramic vacuum filter, has reduced the sealed pressure ceramic vacuum filtration machine that energy consumption and filter plate consume.

Low in order to overcome existing ceramic vacuum filter production capacity, the defective that consumed energy is big, the technical solution of the utility model is to solve like this: comprise a ceramic disk filter, its improvements of the present utility model are to connect a conveying worm at the delivery end of the frame of ceramic disk filter, its conveying worm partly is placed in the filter cake sealant, on the big flow passage components of ceramic vacuum filter, connect a seal closure, be provided with visible observation hole and air-filled pore on seal closure, air-filled pore is connected with air compressor machine by pipeline.

The utility model compared with prior art increases airtight and conveying worm and compressed air on the basis of existing equipment, filter pressure is improved, and realizes energy-saving and cost-reducing purpose.Because the water excessively of ceramic filtering plate is gas only, compressed-air actuated consumption changes with the material of filter plate and the variation in aperture.Have simple in structure, use with easy to operate, improve the disposal ability of ceramic vacuum filter, reduced the characteristics that energy consumption and filter plate consume,, realized pressurization and vacuum double filtration by above-mentioned improvement, its disposal ability is on original technical foundation, under the prerequisite that does not increase filter plate area and vavuum pump power, only need less investment that the device processes ability is doubled, be widely used in mine ore dressing factory and use.

Description of drawings

Fig. 1 is a prior art conventional ceramic vacuum filter contour structures schematic diagram;

Fig. 2 is the sealed pressure ceramic vacuum filtration of a utility model machine contour structures schematic diagram.

The specific embodiment

Accompanying drawing is embodiment of the present utility model.

Below in conjunction with accompanying drawing content of the present utility model is described further:

With reference to shown in Figure 2, sealed pressure ceramic vacuum filtration machine, comprise a ceramic disk filter, delivery end in ceramic disk filter frame connects a conveying worm 2, its conveying worm 2 parts are placed in the filter cake sealant 1, connect a seal closure 4 on the big flow passage components of ceramic vacuum filter, be provided with visible observation hole 5 and air-filled pore 3 on seal closure 4, air-filled pore 3 is connected with air compressor machine by pipeline.Filter medium is the less capillary ceramic plate of gas permeability, consider the manufacturing cost of equipment, design adds compressed air pressure and is not more than 0.2Mpa, in real work, charge into 0.05-0.2MPa compressed air in the enclosed hood 4, filter pressure is improved, at delivery end, install conveying worm 2 additional to guarantee the sealing of discharge process.Be provided with on the conveying worm 2 one with the isometric filter cake storage bin of body, the filter cake that wherein has certain altitude all the time is to guarantee the sealing of discharge process.

The utility model makes it to realize pressurization and vacuum double filtration by press filtration and vacuum filter are organically combined, and is well-known, about filtering rate, following equation expression arranged:

u＝ΔP/μ(Rc+Rm)＝ΔP/μRc+μαavL

Rc in the formula---resistance of filter cake;

The resistance of Rm---filter medium;

U---the amount of filtrate that the unit filter area obtains;

Δ P---filtered driving force;

α av---the average resistivity of filter cake;

L---filter cake thickness;

The viscosity of μ---filtrate.

So, calculating by the aforementioned calculation formula, even being understood that simple ceramic vacuum filter negative pressure reaches-0.094Mpa, its Δ P also only is 0.09Mpa, if the pressure ceramic vacuum filter adds the compressed air of 0.1Mpa in enclosed hood, its Δ P will increase by 1 times, and corresponding, its disposal ability also can add 1 times.

In real work, charge into 0.05-0.2MPa compressed air in the enclosed hood 4, under the prerequisite that does not increase filter plate area and vavuum pump power, only need less investment that the device processes ability is doubled.

Claims

1, a kind of sealed pressure ceramic vacuum filtration machine, comprise a ceramic disk filter, it is characterized in that connecting a conveying worm (2) at the delivery end of ceramic disk filter frame, its conveying worm (2) part is placed in the filter cake sealant (1), on the big flow passage components of ceramic vacuum filter, connect a seal closure (4), be provided with visible observation hole (5) and air-filled pore (3) on seal closure (4), air-filled pore (3) is connected with air compressor machine by pipeline.

2,, it is characterized in that described air-filled pore fills the compression air pressure to institute in the seal closure and is not more than 0.2Mpa according to the described sealed pressure ceramic vacuum filtration machine of claim 1.

3,, it is characterized in that described visible observation hole can connect the visible observation hole of a rotation visual window device or transparent material making according to the described sealed pressure ceramic vacuum filtration machine of claim 1.