CN205145758U - Filter, vertical rotatory gypsum hydroextractor, gypsum dewatering system - Google Patents
Filter, vertical rotatory gypsum hydroextractor, gypsum dewatering system Download PDFInfo
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- CN205145758U CN205145758U CN201520884396.0U CN201520884396U CN205145758U CN 205145758 U CN205145758 U CN 205145758U CN 201520884396 U CN201520884396 U CN 201520884396U CN 205145758 U CN205145758 U CN 205145758U
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Abstract
The utility model provides a filter, a vertical rotatory gypsum hydroextractor and a gypsum dewatering system. The filter is the obturator that contains the gas -liquid port establishes the cavity in, be located the filtering medium on filter surface contacts with treating filterable stereoplasm liquid that contains, filtering medium fixes on the filter, filtering medium is including having the software material of first selectivity through the ability, the inboard supporting layer that has second choice nature and see through the ability that sets up of filtering medium for support the filtering medium shaping, the supporting layer inboard is being close to the cavity, the cavity pass through the external system unit that the gas -liquid port connect to be set for. Filtering medium's the washing regeneration of filter do not need a large amount of waters to the water conservation, lowering system water consumes. The utility model provides a vertical rotatory gypsum hydroextractor and a gypsum dewatering system, including above -mentioned filter, simple structure does benefit to expansion processing capacity, and area is little, answers right desulfurization system's place restricted problem, water conservation, system's water consume lowly, answer right desulfurization system's water balance restricted problem.
Description
Technical field
The utility model relates to Wet Flue Gas Desulfurization Technology field, is specifically related to a kind of filter, a kind of vertical rotating gypsum dehydration machine; Also relate to a kind of gypsum dehydration system, described gypsum dehydration system comprises described vertical rotating gypsum dehydration machine.
Background technology
Current coal fired power generation thermal power plant is the discharge rich and influential family of sulfur dioxide, and in recent years, in order to protection of the environment, the discharge capacity reducing sulfur dioxide, flue gas desulphurization system has been installed by a large amount of coal fired power generation thermal power plants.Wet desulfurization of flue gas by limestone-gypsum method (FGD) technique is main technique heat-engine plant desulfurized at present.Wet desulfurizing process generates desulfurizing byproduct gypsum slurries by the boiler smoke containing sulfur dioxide being carried out desulphurization reaction with lime stone slurry in absorption tower, then by gypsum dehydration system the excessive moisture in gypsum slurries is removed to make and carries out storing use compared with the gypsum of low water content.Flue gas desulfurization process system is primarily of compositions such as flue gas system, absorption and oxidative system, limestone slurry liquid supply system, gypsum dehydration system, technique and cooling water system, Waste Water Treatment and compressed air systems.Wherein gypsum dehydration system mainly completes the dehydrating function of the desulfurizing byproduct gypsum that flue gas desulphurization system produces in absorption reaction process, because gypsum dehydration system belongs to the terminal tail process portion of flue gas desulphurization system, gypsum dehydration system restricts whole desulfurization process, plays very important role in system cloud gray model.
Along with the common people are to atmosphere pollution growing interest, the increasingly stringent of environmental regulation, rises according on January 1st, 2012 " fossil-fuel power plant atmospheric pollutant emission standard " of enforcement, sulfur dioxide pollution thing concentration of emission from before 400mg/Nm
3drop to 100mg/Nm
3(limit discharge 50mg/Nm
3), flue gas desulphurization system is run and proposes higher requirement, need flue gas desulphurization system to absorb more sulfur dioxide with emissions reduction.Therefore, for progressively meeting environmental regulation, energy-saving and cost-reducing, the thermal power plant invested to build is existed to the demand of flue gas desulphurization system extending capacity reformation, need to perform by higher standard to newly-built thermal power plant.What affect the enforcement of flue gas desulphurization system extending capacity reformation has two key factors, and one is place restriction, and another is the water balance restriction of desulphurization system.Other factor also has energy-saving and emission-reduction, lower investment and operating cost etc.The place of heat-engine plant desulfurized extending capacity reformation faces soil, construction, cost, many-sided restriction such as regulation, can not arbitrarily increase, former flue gas desulphurization system and other auxiliary facilities such as device civil engineering space and various pipeline circuit have been determined shaping, change the integrally-built impact of thermal power plant for reducing, preferably in the existing place of flue gas desulphurization system, complete extending capacity reformation, update the equipment in space, existing flue gas desulphurization system place and expand desulfurization disposal ability further.These requirements are applicable equally to newly-built thermal power plant.
The water balance of desulphurization system mainly makes the water quantity holding on net inflow and net outflow absorption tower balance.Absorption tower finite capacity, for keeping desulphurization system normally to work, the highest liquid level in absorption tower must be limited in safe range, otherwise whole desulphurization system cisco unity malfunction.Therefore, must ensure that the water yield on net inflow absorption tower can not exceed the water yield on net outflow absorption tower, in such absorption tower, liquid level can not out of controlly raise.The water on net inflow absorption tower mainly enters absorption tower with fresh water (FW) form; The water on net outflow absorption tower is discharged mainly through two kinds of modes, and a kind of is taken out of by the outlet high-temperature flue gas of evaporated form by absorption tower; One is discharged by Waste Water Treatment, and other modes also have generation crystal water of gypsum discharge etc.Because the liquid water passing in and out absorption tower is all containing industrial pollutants, does not process and can not arbitrarily discharge, finally or by fresh water (FW) formation circulation pass in and out absorption tower, or by evaporating or wastewater treatment discharge.Thermal power plant other saving energy, lowering energy consumption and reducing pollutants discharge transformation in, as flue gas pollutant minimum discharge transformation etc., owing to having installed low-level (stack-gas) economizer additional, the factors such as UTILIZATION OF VESIDUAL HEAT IN, cause the import high-temperature flue gas cigarette temperature drop entering desulfurizing tower low, the outlet high-temperature flue gas cigarette temperature on absorption tower also reduces thereupon, and the steam taken out of by the outlet high-temperature flue gas on absorption tower by evaporated form is reduced, cause absorption tower evaporation capacity to reduce, absorbing tower liquid-level raises; On the other hand, the factors such as various newly added equipments, meeting net increase fresh water (FW) consumption, as demister, need flushing water, these flushing waters can turn back to absorption tower with fresh water (FW) form and cause absorbing tower liquid-level to raise.The absorbing tower liquid-level rising that various factors causes can destroy the water balance of desulphurization system.For tackling the isorrheic problem of desulphurization system, if only simply strengthen wastewater discharge, can increase the construction cost of Waste Water Treatment and the operating cost of wastewater treatment, high energy consumption is with high investment, is also unfavorable for the enforcement of target for energy-saving and emission-reduction.Because equipment water is how many with regard to draining, final water of discharging can get back to absorption tower with fresh water (FW) form, and absorption tower water capacity is limited, and the equipment many with water is just large by moisture volume accounting in desulphurization system, and the share leaving other equipment water of desulphurization system for is just little.Therefore, flue gas desulphurization system extending capacity reformation faces water balance problem, the desulphurization plant water saving of transformation of looking for novelty, and reduces the water consumption in use procedure, save with water under maintenance water balance prerequisite flexible allocation to other equipment use.Meanwhile, for the area of general lack of water, the requirement of equipment water saving is more urgent.If equipment water consumption is too high, promoting the use of of equipment will be restricted, thus causes relevant programme not implement.
At present, mainly adopt vacuum belt dewaterer as gypsum dehydration treating apparatus in limestone-gypsum flue gas desulfurizing process system.Vacuum belt dehydration is primarily of structure compositions such as heavy belt, filter cloth, carrying roller, vacuum boxs, and belt, under the effect of drive motors, is driven by large-scale belt drives wheel.Filter cloth is transmitted by belt, and belt is positioned at filter cloth reverse side, belt has passage and enables liquid suck the vacuum box producing negative pressure; Belt is the basic support of filter cloth, and belt relies on the frictional force between filter cloth to drive filter cloth to be synchronized with the movement.Its operation principle is: gypsum slurries loads continuously and is laid in ring-type and on the filter cloth front of continuous print fillter section, under the suction function of filter cloth reverse side, makes the liquid phase in gypsum slurries and water pass through filter cloth; Solid phase and gypsum rest on filter cloth front, along with the filter cloth operated continuously is removed through scraper.Filter cloth returns fillter section after obtaining regenerate with water by cleaning end, moves in circles like this and reaches the object of continuous Separation of Solid and Liquid.
Vacuum belt dewaterer filter cloth is with plane mode mounting arrangements, and its device processes ability is determined by filter cloth area, also needs to install a lot of accessory simultaneously, therefore takes up an area larger.Meanwhile, vacuum belt dewaterer is in operation, and needs to rinse continuously belt, filter cloth with a large amount of water, and water consumption is huge, removes the solid gypsum of adhesion, otherwise equipment cisco unity malfunction.Vacuum belt dewaterer system complex, floor space is large, and water consumption is high; Therefore, vacuum belt dewaterer can not tackle the water balance problem of place restricted problem in flue gas desulphurization system extending capacity reformation and desulphurization system very well.The working environment very severe of gypsum dehydration, the gypsum slurries of high temperature, various corrosive gas, liquid exists simultaneously, and vacuum belt dewaterer part is many, and particularly the rotatable parts such as similar carrying roller are many, and operation troubles rate is high, and installation and operation maintenance cost is high; Repair and maintenance is loaded down with trivial details, and standby redundancy consumption is large, and easily consumption parts are frequently changed, and not only consumptive material consuming time, also directly affects the availability of whole desulphurization system.
In addition, a kind of micropore hard material is the gypsum dehydration machine of filter medium in addition.Formed by high temperature sintering or the micropore hard material of self-assembling formation, such as pottery or similar structures material, its inside is covered with capillary micropore that is crisscross, that interpenetrate, and the micro channel that these micropores are formed is exactly the passage of filtrate (water).The gypsum dehydration machine being filter medium with micropore hard material, its principle utilizes the micro channel of micropore hard material for filtration channel, by suction, can cannot being passed through by moisture by tiny micropore of gypsum solid particle larger in gypsum slurries, make gypsum solid be trapped in filter media surface and become filter cake, moisture is sucked away by micro channel, realizes Separation of Solid and Liquid.Because the micropore formed is very little, micro channel is also irregular, and filter medium is certain thickness rigid material to ensure intensity during use on the whole, and when this material is used in gypsum dehydration, micro channel easily blocks.If do not have suitable dredging measure, this device cannot continuous firing, and along with increasing of micro channel blocking, filter medium solid-liquid separation capability can progressively reduce.Dredging measure comprises backwash, Chemical cleaning and Ultrasonic Cleaning.In backwash process, need to consume a large amount of water under high pressures and continuous flushing is carried out to the micropore of filter medium, this process very water consumption.Except continuous print washing, also need Chemical cleaning that blockage of the micro orifice thing is softened further, it is generally pickling, clean with industrial nitric acid, and these industrial chemistry raw materials are generally mordant dangerous goods, easily cause security incident, its transport storage uses with certain risk and adds use cost.Except using water under high pressure backwash, use sour Chemical cleaning, to the blockage of the micro orifice thing that can not soften completely, also need to use Ultrasonic Cleaning, the concussion utilizing ultrasonic wave to produce goes to remove.For this reason, a set of ultrasonic cleaning system can be increased specially again.Be the dewaterer of filter medium to micropore hard material, because backwashing water consumption is too many, the water balance problem of desulphurization system can not be tackled very well in flue gas desulphurization system extending capacity reformation; This dewaterer easily causes blocking in using, and brings larger pressure to purging system; Purging system also more complicated simultaneously.Micropore hard material be filter medium dewaterer due to water consumption many, for the area of lack of water, promoting the use of of this dewaterer can be restricted.The filter element of micropore hard material is for easily to consume parts, and cost is also higher, causes maintenance cost higher.
Utility model content
For overcoming the deficiencies in the prior art, technical problem to be solved in the utility model is to economize on water, a kind of novel filter is provided, the cleaning and regeneration of the filter medium of described filter does not need to use water in a large number, even water can not be needed, do not need to use dangerous Chemical cleaning and complicated Ultrasonic Cleaning yet, thus water saving, reduce system water consumption.
Another technical problem to be solved in the utility model is, the place restriction of desulphurization system and the problem of water balance restriction can not be tackled well for overcoming existing gypsum dewatering equipment simultaneously, and overcome the high problem of existing gypsum dewatering equipment complex structure operating cost, a kind of vertical rotating gypsum dehydration machine and method of work are proposed, comprise above-mentioned filter, structure is simple, is beneficial to and expands process capacity, floor space is little, answers the place restricted problem of right desulphurization system; Water saving, system water consume low, the cleaning and regeneration of filter medium does not need to use water in a large number, even water can not be needed, do not need to use dangerous Chemical cleaning and complicated Ultrasonic Cleaning yet, operation troubles rate is low, operation use cost reduces, should the water balance restricted problem of right desulphurization system and the high problem of existing apparatus complex structure operating cost.
Another technical problem to be solved in the utility model is the gypsum dehydration system proposing to comprise above-mentioned vertical rotating gypsum dehydration machine and method of work.
For solving technical problem of the present utility model, the technical solution adopted in the utility model is:
A kind of filter 1, described filter 1 is the obturator comprising gas-liquid port, inside establishes cavity 8; Slurry liquid contacts is consolidated in the filter medium and to be filtered the containing that are positioned at described filter 1 surface, described filter medium is fixed on filter 1, described filter medium comprises and has the first selective soft material through ability, arrange inside described filter medium and there is the second selective supporting layer 3 through ability, shaping for supporting filter medium; Abutted to cavity 8 inside described supporting layer 3, described cavity 8 connects the external system unit of setting by gas-liquid port.
Described gas-liquid port refers to the port that gas or liquid can be allowed to pass through.
Further, the method for filter medium described in cleaning and regeneration comprises filter medium from inside to outside blowback air.
Further, described external system unit is vacuum vacuum unit 17, and under negative pressure of vacuum effect, to be filtered is trapped within described filter media surface containing the solid constituent in stereoplasm liquid; To be filtered passes through filter medium, supporting layer 3 containing the liquid component in stereoplasm liquid, enters cavity 8, and then is pumped by gas-liquid port.
Further, described external system unit is high-pressure air source 19, gases at high pressure flow into the cavity 8 of described filter 1 by gas-liquid port, by supporting layer 3, and then to filter medium from inside to outside blowback air thus remove and be trapped in the solid of filter media surface, the filter medium of cleaning and regeneration filter 1 simultaneously.Preferably, described high-pressure air source 19 is compressed air sources, and described gases at high pressure are compressed air.
Further, described soft material is slim, pliable and tough soft material.
Further, described soft material is fibrous material or filter membrane material, and described fibrous material or filter membrane material contain mesh or micropore.Preferably, fibrous material can be the fiber cloth material containing mesh or micropore; Preferably, described filter medium is single or multiple lift filter cloth, or described filter medium is the combination of filter cloth and other filter membrane material; Filter membrane material can be the macromolecular filtering membrane material containing mesh or micropore.
Further, described supporting layer 3 is made up of the high strength engineering material of trough of belt or hole or grid; Further, described high strength engineering material can be various engineering plastics.
Filter 1 described in the utility model is a kind of functional parts unit performing filtering function, it is an obturator, gas-liquid port is as the openend of this obturator, by the port that gas-liquid port connects as outside, also be the port of gas or liquid turnover filter 1, as Fig. 1, Fig. 2, shown in Fig. 4, Fig. 5.Described gas-liquid port can be carbonated drink runner pipe 7.According to procedure calls, filter 1 is by the gas-liquid port external system unit that optionally fluid connects or disconnection sets.Wherein, described optionally fluid connect comprise allow liquid by and/or permission gas pass through; Optionally fluid disconnect comprise no longer allow liquid by or no longer permission gas pass through.The structure qualification of filter 1 obturator gas or liquid component except the gas-liquid port of setting, the passage turnover filter 1 that can only be formed along filter medium, supporting layer 3, cavity 8; Meanwhile, the structure of filter 1 obturator makes filter 1 by removing the solid being trapped in filter media surface, the filter medium of cleaning and regeneration filter 1 simultaneously to the method for filter medium from inside to outside blowback air.Liquid component can be the liquid component that water or other needs are separated.
On the one hand, cavity 8 define under filter medium and supporting layer 3 coordinate liquid and/or gas flow filter 1 in required for cavity, guarantee liquid and/or gas circulate; On the other hand, cavity 8 and supporting layer 3 coordinate, the shape size of adaptive filter medium, in the vacuumizing filtration process of filter 1 and blowback air discharging and cleaning and regeneration process, maintain the pressure differential required for both sides inside and outside filter medium, and this pressure differential often to locate position at filter medium relatively uniform.
In filter 1 vacuumizing filtration process, the existence of cavity 8 makes negative pressure of vacuum compare to be evenly distributed on the position, often place inside filter medium, maintenance filter medium often locates the pressure differential inside and outside position required for both sides, moisture in absorption gypsum slurries, makes filter medium often to locate position Comparision even.Equally, in filter 1 blowback air discharging and cleaning and regeneration process, the existence of cavity 8 makes hyperbar compare to be evenly distributed on the position, often place inside filter medium, maintenance filter medium often locates the pressure differential inside and outside position required for both sides, realize blowback air discharging and cleaning and regeneration filter medium, make filter medium often to locate position Comparision even simultaneously.Described filter medium is single or multiple lift filter cloth, or described filter medium is the combination of filter cloth and other filter membrane material.
The filter medium of filter 1 needs cleaning and regeneration.Cleaning and regeneration refers to the tamper removed and/or limit in filter media passage, prevent from passing in time, tamper runs up to some makes filtration channel block, thus filter media ability is declined or filtering function inefficacy, and filter process just can not carry out continuously.Described first selectively refers to through ability the filter medium that the first selective soft material through ability is formed, can optionally make to be filtered containing the solid constituent in stereoplasm liquid not by this filter medium, be trapped within filter media surface, and liquid or gas component can pass through this filter medium; There is the filter medium that the first selective soft material through ability forms and also can pass through air-flow in blowback air.Further, the filter medium that thin, pliable and tough soft material is formed, filtration channel is produced at thickness direction, and filtration channel is short, and solids is not easy accumulated plugging, easily dredges; The pliability of soft material, makes filter medium can adapt to washing away containing stereoplasm liquid, not fragile.In addition, the filter medium that described soft material is formed is applicable to blowback air discharging and blowback air cleaning and regeneration, when vacuumizing with blowback air, filter medium can occur to a certain degree similar to caving in and the elastic deformation of outside bulging, be equivalent to mechanical external force and tear dredging filtration channel, solids is not easy to be attached to filtration channel; Again in conjunction with blowback air, air-flow, through filtration channel, removes the solids in filtration channel, cleaning and regeneration filter medium while discharging.The filter medium that pliable and tough soft material is formed both can appropriate dilatation repeatedly, can not damage again, such as when vacuumizing with blowback air; Also filter medium is made can to adapt to contain stereoplasm liquid, as the washing away of gypsum slurries of heat in filter 1 rotates.
All or part of employing blowback air method cleaning and regeneration filter medium, can all or part of alternative water cleaning and regeneration filter medium, even without the need to water, thus reduces water consumption, using water wisely.The filter cloth that the fibrous material that filter medium preferably contains mesh or micropore is made.Filter medium can be single or multiple lift filter cloth; Also can be the compound substance that filter cloth and other materials are combined to form.The filtration channel that filter cloth has a lot of fiber interweaving to be formed, as mesh or slotted eye or micropore.Filter cloth is soft, thin, pliable and tough, can not through the gypsum solid in gypsum slurries, can through moisture and air-flow.The filtration channel of filter cloth is short, not easily blocks, and is applicable to the discharging of blowback air mode and cleaning and regeneration simultaneously.The choosing of soft material of appropriate size can according to application, and experiment is screened and determined.As filter cloth can select different mesh sizes as required, the filter cloth of mesh density, the filter cloth that filter cloth can select the polymer composite fiber material of terylene filter cloth, polyamide fibre filter cloth, polypropylene fibre filter cloth, polyvinyl filter cloth or other types to make according to material.
And micropore hard material, as pottery or similar structures material, the filter medium of formation, be that certain thickness rigid body is to ensure intensity when using on the whole; And because the micropore that micropore hard material is formed is very little, micro channel is also irregular, when the filter medium that therefore this material is formed is used in gypsum dehydration, micro channel easily blocks, need to use water under high pressure backwash, without gas flushing, and difficulty is made slim, otherwise fragility is large, fragile.And one of them shortcoming of thick filter medium is exactly, for thin filter medium, filtration channel is long, easily blocks during use, and therefore cleaning and regeneration water consumption is just many.
Because filter medium adopts soft material, and adopt supporting layer 3, support filter medium shaping, as lacked supporting layer 3, easily caving in when soft material normally uses or vacuumizes or being out of shape, also cannot normally launch.If soft material does not have the support structure of the similar skeleton that supporting layer 3 is the same, self cannot keep the shape determined in the course of the work, also cannot form the cavity 8 of filter 1.
Second selectively refers to there is the second selective supporting layer 3 through ability, liquid component can be made to pass through, also can pass through air-flow in blowback air through ability.It is selective can need adjusting and optimizing according to use through ability.There is the second selective supporting layer 3 through ability, and have the first selective soft material through ability to cooperatively interact, retain solid matter, make liquids and gases pass through smoothly simultaneously.Preferably, supporting layer 3 is made up of the high strength engineering material of trough of belt or hole or grid.Groove or hole or grid make supporting layer 3 have through ability, and high strength engineering material makes supporting layer 3 can adapt to contain stereoplasm liquid in filter 1 rotates, as the washing away of gypsum slurries of heat.In filter 1 as shown in Figure 1, the second selective supporting layer 3 through ability is had to be supporting layers 3 that there is surface mesh 5 (as Fig. 1) on surface; In filter 1 as shown in Figure 4, the second selective supporting layer 3 through ability is had to be supporting layers 3 that there is slotted hole 5A (as Fig. 4) on surface.Surface mesh 5 (as Fig. 1) or slotted hole 5A (as Fig. 4) can make liquid component pass through, and also can pass through air-flow in blowback air.
Filter medium is fixed on filter 1, and when such filter 1 moves, filter medium is motionless relative to filter 1, and movable members is few, not fragile.Vacuum belt dewaterer is not closure structure, can not realize blowback air discharging and filter medium cleaning and regeneration.The belt of vacuum belt machine filter cloth relative support filter cloth is motion, and movable members is many, easily damages.
Preferably, the filter medium of described filter 1 is at least two panels filter cloth, the quantity of described supporting layer 3 is at least two pieces, described gas-liquid port is carbonated drink runner pipe 7, described filter medium can be single or multiple lift filter cloth, or described filter medium is the combination of filter cloth and other filter membrane material.Preferred, described filter 1 is by two panels filter cloth 2, two pieces of supporting layers 3, assemble the obturator be put together, band carbonated drink runner pipe 7, wherein, described filter cloth 2 can be single or multiple lift filter cloth, or the combination of described single or multiple lift filter cloth and other filter membrane material.
The utility model provides again a kind of vertical rotating gypsum dehydration machine 40, comprises main computer unit, vacuum unit 17, purges discharge unit; Wherein,
Described main computer unit comprises slurry tank 24, driver element 27, rotor 16; Described rotor 16 is arranged on slurry tank 24 two ends, described rotor 16 is provided with multiple along rotor main shaft 10 axial arranged, corotation axle, the filtering table 9 of vertical installation; Described filtering table 9 comprise multiple along rotor 16 circumferential hoop around the filter 1 of arbitrary form as previously mentioned arranged; Described driver element 27 drives rotor 16, and the filtering table 9 described in drive rotates in slurry tank 24; On described rotor 16, the gas-liquid port of filter 1 and the connection of external system unit comprise rotary connection unit, and described rotary connection unit is used for filter 1 with in rotor 16 rotation, switches the external system unit connecting setting;
Described vacuum unit 17 connects rotary connection unit, when vacuum unit 17 is by rotary connection unit access filter 1 gas-liquid port, produce negative pressure of vacuum at the cavity 8 of filter 1, under negative pressure of vacuum effect, the solid constituent contained in stereoplasm liquid to be filtered is trapped within filter media surface; Liquid component, by filter medium, supporting layer 3, is entered cavity 8, and then is pumped by gas-liquid port;
Described purging discharge unit comprises high-pressure air source 19, described high-pressure air source 19 connects rotary connection unit, when described high-pressure air source 19 is by rotary connection unit access filter 1 gas-liquid port, gases at high pressure flow into the cavity 8 of filter 1 by gas-liquid port, by supporting layer 3, and then to filter medium from inside to outside blowback air thus remove and be trapped in the solid of filter media surface, the filter medium of cleaning and regeneration filter 1 simultaneously.
Preferably, high-pressure air source 19 is compressed air sources, and gases at high pressure are compressed air.
Further, described vertical rotating gypsum dehydration machine 40 also comprises filter cake washing unit 29; Further, described purging discharge unit also comprises doctor blade device 30.
Further, the quantity of the described filter 1 included by described each filtering table 9 is 6 ~ 30.
Due to engineering aspects such as manufacture and installations, the quantity forming the filter 1 of each filtering table 9 is wanted rationally.Preferably, form the quantity of the filter 1 of each filtering table 9 more than 6 or 6, but be less than or equal to 30.Form each filter 1 shape of filtering table 9, size can be identical, also can be different.Preferably, each filter 1 shape, the size that form filtering table 9 are identical.Preferably, each filtering table 9 is made up of 12 filters 1 or is made up of 20 filters 1.Filtering table 9 is made up of 12 filters 1 as shown in Figure 3.Preferably these 12 filters 1 are all same shape, size.Filtering table 9 is made up of 20 filters 1 as shown in Figure 6.Preferably these 20 filters 1 are all same shape, size.
Further, described filtering table 9 is plate-likes of annular, and described filter 1 is fan-shaped.
Preferably, rotor main shaft 10 can be cylinder-like structure.Preferably, filtering table 9 can be the disk-like structure of annular, rounded outer profiles.As Fig. 3, Fig. 6, shown in Fig. 8, Fig. 9, multiple filtering table 9 is arranged on rotor main shaft 10, arrange along rotor main shaft 10 axially spaced-apart, be parallel to each other between filtering table 9 and filtering table 9, vertical installation, filtering table 9 card is vertical with rotor main shaft 10 direction, all filtering tables 9 are all axle center coaxial rotating with rotor main shaft 10, the concurrent working of all filtering tables 9.Preferably, filter 1 can be fan-shaped, has certain thickness.The thickness of filter 1 can make filter 1 internal cavity 8 keep certain size.Scalloped surface is also the groundwork face that filter 1 participates in filtering.Neglect the factor that some are secondary, as the gap between filter 1 or filler etc., each fan-shaped filter 1 can be the decile of filtering table 9 by some of annular.The size of fan-shaped filter 1 depends on the quantity of decile, the quantity of the filter 1 that this quantity i.e. filtering table 9 comprise.The quantity of described filter 1 is 6 ~ 30.If filter 1 quantity is 6, then the size of each fan-shaped filter 1 is 1/6 filtering table annulus.If filter 1 quantity is 30, then the size of each fan-shaped filter 1 is 1/30 filtering table annulus.
Multiple filter 1 is mutually near arrangement, circumferential around layout along rotor 16, and thickness direction aligns, and the sector of all filters 1 is stitched together, just the filtering table 9 of composition annular, and filtering table 9 has rounded outer profiles.Filtering table 9 can be vertical installation, and the working face participating in filtering is the card of annular, is made up of, filtering table 9 rotary work during work some fan-shaped filters 1.Be different from the mounting arrangements method of traditional vacuum belt dewaterer plane, vertical rotating gypsum dehydration machine filtering table 9 working face vertical, can make full use of solid space, largely can save erection space.If need System Expansion, also just increase is filtered disc quantity or increases filtering table sheet area more simply, can not increase how many floor spaces.So be beneficial to and expand process capacity, floor space is little, the place restricted problem of energy answering system.
The filter medium of the dewaterer of prior art in use easily blocks, a large amount of with water cleaning and regeneration filter medium, causes the dewaterer water consumption of prior art large.Vertical rotating gypsum dehydration machine described in the utility model adopt slim, pliable and tough, there is the selective soft material through ability form filter medium, filtration channel is short, and solids is not easy accumulated plugging, easily dredges; Adopt blowback air discharging, simultaneously cleaning and regeneration filter medium, vertical rotating gypsum dehydration machine does not just need a large amount of water as vacuum belt dewaterer to go cleaning; Also do not need to use water under high pressure backwash, Chemical cleaning, Ultrasonic Cleaning as the dewaterer that micropore hard material is filter medium, related system also can be cancelled, and dewaterer structure simplifies, and runs use cost and reduces.
Due to the structure not having vacuum belt dewaterer so complicated, so much dispersion, the rotatable parts of rapid wear, as heavy belt, carrying roller etc.; Also do not have if micropore hard material is the filter medium of the micropore hard material that the dewaterer of filter medium is so expensive, vertical rotating gypsum dehydration machine runs use cost to be reduced.
As shown in Fig. 7, Fig. 8, Fig. 9, form filtering table 9 by filter 1, filtering table 9 is positioned on rotor 16, rotates during work with rotor 16.Vacuum unit 17, comprises vavuum pump, gas-liquid separator and associated conduit, valve, instrument etc.; High-pressure air source 19, comprising compressed air generator and associated conduit etc. is all relatively motionless static equipment, not on rotor 16, is arranged in around dewaterer.Rotary connection unit is the filter 1 rotated and motionless vacuum unit 17, and high-pressure air source 19 etc. couples together.Rotary connection unit can be air water allocation units 15, and air water allocation units 15 comprise rotating ring module 14, stationary ring module 13 and associated pipe.A rotary connection unit part is connected to each filter 1 of the work of being rotating, and another part is connected to motionless vacuum unit 17 or high-pressure air source 19; Need and the change of rotor 16 position according to operation, rotary connection unit optionally switch filtering plate 1 connects vacuum unit 17 or connects high-pressure air source 19, and optionally switch filtering plate 1 disconnects with the connection of vacuum unit 17 or disconnects and the connection of high-pressure air source 19.
Preferably, for obtaining better discharging effect, doctor blade device 30 can be adopted, in conjunction with blowback air discharging.Preferably, filter cake washing unit 29 may be used for spraying filter cake, washes away the impurity such as residual chlorine ion in filter cake.
As shown in Figure 9, the utility model provides again a kind of method of work of Separation of Solid and Liquid of described vertical rotating gypsum dehydration machine 40, filtering table 9 concurrent working of described vertical rotating gypsum dehydration machine, the course of work of its work period of each filter 1 that each filtering table 9 comprises comprises:
A. midge process: driver element 27 drives rotor 16, drive filtering table 9 be equipped with to be filtered containing rotation in the slurry tank 24 of stereoplasm liquid; Filter 1 on rotor 16 rotates around rotor main shaft 10 towards discharge zone 31 direction, rotary connection unit makes vacuum unit 17 access filter 1 gas-liquid port thus connects filter 1, negative pressure of vacuum is produced at the cavity 8 of filter 1, under negative pressure of vacuum effect, be immersed in and adsorb containing stereoplasm liquid containing the filter 1 in stereoplasm liquid, be trapped within filter media surface containing the solid constituent in stereoplasm liquid and form filter cake, liquid component is by filter medium, supporting layer 3, enter cavity 8, and then be pumped by gas-liquid port;
B. process is blotted: filter 1 rotates liquid level, rotary connection unit makes vacuum unit 17 continue the gas-liquid port of access filter 1 thus connect filter 1, under negative pressure of vacuum, the filter cake being adsorbed on filter 1 surface is dried, liquid component continues through filter medium, supporting layer 3, enter cavity 8, and then be pumped by gas-liquid port;
C. discharging: along with rotor 16 change in location, when the filter 1 adsorbing filter cake enters discharge zone 31, rotary connection unit makes vacuum unit 17 disconnection be connected with filter 1 gas-liquid port, make high-pressure air source 19 access gas-liquid port thus connect filter 1, gases at high pressure flow into the cavity 8 of filter 1 by gas-liquid port, by supporting layer 3, and then to filter medium from inside to outside blowback air thus remove and be trapped in the solid filter cake of filter media surface, the filter medium of cleaning and regeneration filter 1 simultaneously;
After each cycle completes, can recycle and enter the subsequent work cycle: discharging completes, under the drive of driver element 27, the filter 1 on rotor 16 is rotated further around rotor main shaft 10, and filter 1 enters the midge process of next work period.
The utility model provides again a kind of gypsum dehydration system, and described gypsum dehydration system comprises foregoing various forms of vertical rotating gypsum dehydration machine, or the dewaterer included by described gypsum dehydration system runs according to foregoing method of work.
The beneficial effects of the utility model are:
1, the filter that the utility model proposes adopt slim, pliable and tough, there is the selective soft material through ability form filter medium, blocking is less likely to occur filtration channel, easily dredges; Described filter medium combines the technical scheme of the closure structure adopting supporting layer next-door neighbour cavity, while making filter of the present utility model that solid-liquid separation function can be realized, also by blowback air discharging and cleaning and regeneration filter medium, water consumption can be reduced, water saving, even without the need to water; The basic components that filter also becomes energy-conservation, efficient, environment protection vertical rotates gypsum dehydration machine.
2, the vertical rotating gypsum dehydration machine that the utility model proposes and method of work adopt filter to be parts composition filtering table, the vertical installation of filtering table, rotary work, can make full use of solid space, can largely save equipment erection space, the vacuum belt dewaterer comparing horizontal layout saves occupation area of equipment about 75%, be beneficial to expansion process capacity and reduce occupation area of equipment simultaneously, reduce construction investment, save production site, the place restricted problem of answering system.
3, the vertical rotating gypsum dehydration machine that the utility model proposes and method of work adopt filter to be parts, and filter adopts slim soft material to be filter medium, and filtration channel is short, and solids is not easy accumulated plugging, easily dredges; Filter adopts blowback air discharging, simultaneously cleaning and regeneration filter medium, water saving, and system water consumption is low, answers the water balance restricted problem of right desulphurization system, is also applicable to promoting the use of of water-deficient area.Compare vacuum belt dewaterer, the vertical rotating gypsum dehydration machine that the utility model proposes does not need a large amount of water to go cleaning, water saving more than 50%; Compare the dewaterer that micropore hard material is filter medium, the vertical rotating gypsum dehydration machine that the utility model proposes does not need water under high pressure backwash, Chemical cleaning yet, Ultrasonic Cleaning, complicated purging system also can be cancelled, and dewaterer structure simplifies, and runs use cost and reduces.
4, in addition, due to the structure not having vacuum belt dewaterer so complicated, so much dispersion, the rotatable parts of rapid wear, as heavy belt, carrying roller etc.; Also do not have if micropore hard material is the filter medium of the micropore hard material that the dewaterer of filter medium is so expensive, be beneficial to operating repairs, also make vertical rotating gypsum dehydration machine run use cost and reduce, maintenance cost reduces about 80%.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of the first form filter of the utility model, and Figure 1A is shaping figure, Figure 1B is assembling exploded view.
Fig. 2 is the contour structures schematic diagram of the first form filter of the utility model.
Fig. 3 is the structural representation of the filtering table that the utility model is made up of the first form filter.
Fig. 4 is the composition structural representation of the utility model the second form filter, and Fig. 4 A is shaping figure, Fig. 4 B is assembling exploded view.
Fig. 5 is the contour structures schematic diagram of the utility model the second form filter.
Fig. 6 is the structural representation of the filtering table that the utility model is made up of the second form filter.
Fig. 7 is the utility model rotating ring model calling end face and stationary ring model calling end face structural representation.
Fig. 8 is the structural representation of vertical rotating gypsum dehydration machine described in the utility model.
Fig. 9 is vertical rotating gypsum dehydration machine course of work schematic diagram described in the utility model.
Shown in figure: 1-filter, 2-filter cloth, 3-supporting layer, 4-supporting layer hollow bulb, 5-surface mesh, 5A-slotted hole, 6-screw, 7-carbonated drink runner pipe, 8-cavity, 9-filtering table, 10-rotor main shaft, 11-rotor main shaft tube connector, 13-stationary ring module, 14-rotating ring module, 15-air water allocation units, 16-rotor, 17-vacuum unit, 18-vacuum unit access port, 19-high-pressure air source, 20-high-pressure air source access port, 24-slurry tank, the anti-precipitation unit of 25-liquid, 27-driver element, 28-gypsum slurries, 29-filter cake washing unit, 30-doctor blade device, 31-discharge zone, 40-vertical rotating gypsum dehydration machine.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
Filter 1 described in the utility model is a kind of functional parts unit performing filtering function, adopts the enclosed construction of separate unit, easy to use and maintain and replace.What Fig. 1, Fig. 2 and Fig. 4, Fig. 5 represented respectively is two kinds of multi-form filters 1.As shown in assembling exploded view in Fig. 1 and Fig. 4, assembly direction as the direction of arrow in figure indicate, filter 1 is by two panels filter cloth 2, two pieces of supporting layers 3, the obturator be put together is assembled by screw 6, band carbonated drink runner pipe 7, the filter 1 assembled is as shown in the shaping figure in Fig. 1 and Fig. 4, comprise the cavity 8 established therein, filter cloth 2 is fixed on filter 1 outer surface, the filtration channel that filter cloth 2 has a lot of fiber interweaving to be formed, as mesh, only allow water and air-flow through, gypsum particle cannot pass through, to filter cloth 2, from inside to outside blowback air can to filter cloth 2 cleaning and regeneration.
It is supporting layer 3 inside filter cloth 2, supporting layer 3 is made up of the high strength engineering material of belt surface grid 5 (as Fig. 1) or slotted hole 5A (as Fig. 4), form the structure of similar skeleton, supporting filter cloth 2 is shaping, makes filter cloth 2 launch to be laid in outside supporting layer 3.If filter cloth 2 does not have the support of the structure of the similar skeleton that supporting layer 3 is the same, self cannot keep the shape determined in the course of the work, also cannot form the cavity 8 of filter 1.The split of two pieces of supporting layers 3 can use screw, thermoplastic shaping, bonding various ways of Denging.Supporting layer 3 is not solid, and supporting layer 3 outer wall indent forms supporting layer hollow bulb 4, abutted to supporting layer hollow bulb 4, two supporting layer hollow bulbs 4 and dock the cavity 8 that split forms filter 1 inside supporting layer 3.Cavity 8 fluid of filter 1 connects carbonated drink runner pipe 7.The cavity 8 of filter 1 is connected with external system unit by carbonated drink runner pipe 7.There are surface mesh 5 (as Fig. 1) or slotted hole 5A (as Fig. 4) in supporting layer 3 surface, surface mesh 5 (as Fig. 1) or slotted hole 5A (as Fig. 4) become the passage that liquid enters the cavity 8 of filter 1, also gas is become from the passage of cavity 8 through supporting layer 3, and then to being fixed on the filter cloth 2 from inside to outside blowback air of supporting layer 3 outer surface.
On the one hand, cavity 8 define under filter cloth 2 and supporting layer 3 coordinate liquid and/or gas flow filter 1 in required for cavity, guarantee liquid and/or gas circulate; On the other hand, cavity 8 and supporting layer 3 coordinate, the shape size of adaptive filter cloth 2, in filter 1 vacuumizing filtration process and filter 1 blowback air discharging and cleaning and regeneration process, maintain the pressure differential required for both sides inside and outside filter cloth 2, and this pressure differential often to locate position at filter cloth 2 relatively uniform.The cavity 8 of filter 1 docks split by two supporting layer hollow bulbs 4 and is formed, and supporting layer hollow bulb 4 is formed by supporting layer 3 outer wall indent.Supporting layer 3 participates in the groundwork face of filtration and blowback air, it is exactly the area part containing surface mesh 5 (as Fig. 1) or slotted hole 5A (as Fig. 4), the size of filter cloth 2 is substantially identical containing the area part size of surface mesh 5 (as Fig. 1) or slotted hole 5A (as Fig. 4) with supporting layer 3, and surface mesh 5 (as Fig. 1) or slotted hole 5A (as Fig. 4) inner side just next-door neighbour's cavity 8.Except the impact of installation and Other Engineering aspect factor causes the places such as filter cloth 2 edge for fixing or other effects, surface mesh 5 (as Fig. 1) or the slotted hole 5A (as Fig. 4) of supporting layer 3 is close to inside major part filter cloth 2, the surface mesh 5 (as Fig. 1) of supporting layer 3 or slotted hole 5A (as Fig. 4) inner side next-door neighbour's cavity 8, mean often to locate inside most of filter cloth 2 position across the surface mesh 5 (as Fig. 1) of supporting layer 3 or slotted hole 5A (as Fig. 4) be exactly cavity 8.In filter 1 vacuumizing filtration process, the existence of cavity 8 makes negative pressure of vacuum compare to be evenly distributed on the position, often place inside filter cloth 2, maintain the pressure differential that filter cloth 2 often locate inside and outside position required for both sides, adsorb the moisture in gypsum slurries, make filter cloth 2 often to locate position Comparision even.Equally, in filter 1 blowback air discharging and cleaning and regeneration process, the existence of cavity 8 makes hyperbar compare to be evenly distributed on the position, often place inside filter cloth 2, the pressure differential inside and outside position required for both sides often located by maintenance filter cloth 2, realize blowback air discharging and cleaning and regeneration filter cloth 2, make filter cloth 2 often to locate position Comparision even simultaneously.
As shown in Figure 2 and Figure 5, described filter 1 is fan-shaped section, and described filter 1 is the obturator comprising gas-liquid port, and gas-liquid port passes in and out the port of filter 1 as gas and/or liquid, and gas-liquid port can be carbonated drink runner pipe 7.The quantity of carbonated drink runner pipe 7 can be one or more.The filter 1 of Fig. 1 and Fig. 2 has the filter 1 of two carbonated drink runner pipes 7, Fig. 4 and Fig. 5 to have a carbonated drink runner pipe 7.Carbonated drink runner pipe 7 is arranged on the side, the center of circle near fan-shaped cambered surface, facilitates carbonated drink runner pipe 7 and rotor main shaft tube connector 11 to connect (as Fig. 3 and Fig. 6).Filter 1 surface is wrapped in filter medium, and filter medium is filter cloth 2, and filter cloth 2 place scalloped surface is also the working face that filter 1 participates in filtering.Filter medium also can be single or multiple lift filter cloth, or the combination of filter cloth and other filter membrane material.Filter cloth 2 is fixed on filter 1, and during work, filter cloth 2 is motionless relative to filter 1, not fragile like this.
As shown in Figure 3 and Figure 6, multiple filter 1 along rotor main shaft 10 or rotor 16 circumferential around layout, all filters 1 are mutually near arrangement, and the sector of all filters 1 is stitched together, just the filtering table 9 of composition annular, and filtering table 9 has rounded outer profiles.Filter 1 connects rotor main shaft tube connector 11 by carbonated drink runner pipe 7, then connects rotating ring module 14 by rotor main shaft tube connector 11 and associated pipe.
Neglect the factor that some are secondary, as the gap between filter 1 or filler etc., in Fig. 3, fan-shaped screen plate 1 is 12 deciles of the filtering table 9 of annular.Filter 1 quantity that each filtering table 9 comprises is 12, then the size of each fan-shaped filter 1 is 1/12 filtering table annulus.
In Fig. 6, fan-shaped screen plate 1 is 20 deciles of the filtering table 9 of annular.Filter 1 quantity that each filtering table 9 comprises is 20, then the size of each fan-shaped filter 1 is 1/20 filtering table annulus.
As shown in Fig. 7, Fig. 8, Fig. 9, vertical rotating gypsum dehydration machine 40 comprises main computer unit, vacuum unit 17, purges discharge unit;
Wherein,
Main computer unit comprises slurry tank 24, driver element 27, rotor 16; Rotor 16 is arranged on slurry tank 24 two ends, rotor 16 is provided with multiple axial arranged along rotor main shaft 10, corotation axle, the filtering table 9 of vertical installation; Rotor main shaft 10 is cylinder-like structures.The disk-like structure of filtering table 9 annular, rounded outer profiles.Multiple filtering table 9 is arranged on rotor main shaft 10, arrange along rotor main shaft 10 axially spaced-apart, be parallel to each other between filtering table 9 and filtering table 9, vertical installation, filtering table 9 card is vertical with rotor main shaft 10 direction, all filtering tables 9 are all axle center coaxial rotating with rotor main shaft 10, the concurrent working of all filtering tables 9.Described filtering table 9 comprises multiple along the circumferential fan-shaped screen plate 1 around arranging of rotor 16.Filtering table 9 adopts vertical rotating pattern, improves plane space utilization rate, have compressed contour size of the unit(s).
Described driver element 27 comprises reductor, and described reductor drives rotor 16, drives filtering table 9 to rotate in slurry tank 24.
Described vacuum unit 17 comprises vavuum pump, gas-liquid separator and associated conduit, valve, instrument.
Described purging discharge unit comprises high-pressure air source 19 and doctor blade device 30, and high-pressure air source 19 comprises compressed air generator and associated conduit, high-pressure air source 19 output squeezing air.
Described rotary connection unit comprises air water allocation units 15, and air water allocation units 15 comprise rotating ring module 14, stationary ring module 13 and associated pipe.Rotating ring module 14 and stationary ring module 13 have the connecting end surface of porous as shown in Figure 7.On rotor 16, the connection of the carbonated drink runner pipe 7 of filter 1 and vacuum unit 17, high-pressure air source 19 is realized by air water allocation units 15, and air water allocation units 15 switch and connect vacuum unit 17 and high-pressure air source 19 in rotating with rotor 16 for filter 1.
Non rotatable part, as vacuum unit 17, high-pressure air source 19 are communicated with stationary ring module 13 by associated pipe; Wherein, vacuum unit 17 connects stationary ring module 13 by vacuum unit access port 18, and high-pressure air source 19 connects stationary ring module 13 by high-pressure air source access port 20.Rotating part, the carbonated drink runner pipe 7 as each filter 1 is communicated with by rotor main shaft tube connector 11 and associated pipe with rotating ring module 14.Rotating ring module 14 is communicated with the pipeline of stationary ring module 13 correspondence according to rotor 16 position difference or disconnects.Rotating ring module 14 and stationary ring module 13 have the connecting end surface of porous as shown in Figure 7.Hole on rotating ring model calling end face can be the opening port about pipeline on rotor 16; Hole on stationary ring model calling end face can be the opening port of static equipment about pipeline.Be docked and connected by the hole on the hole on rotating ring model calling end face and stationary ring model calling end face or stagger, realizing pipeline connection corresponding to hole on pipeline corresponding to hole on rotating ring model calling end face and stationary ring model calling end face or disconnection.Connect vacuum unit 17, high-pressure air source 19 pipeline with hole corresponding on stationary ring model calling end face for opening port; The pipeline connecting the carbonated drink runner pipe 7 of each filter 1 with hole corresponding on rotating ring model calling end face for opening port.Rotating ring module 14 rotates with rotor 16, certain position is turned in rotating ring module 14, fluid can simultaneously through on stationary ring model calling end face as on the hole of the pipeline opening port of connection vacuum unit 17 and rotating ring model calling end face as when being connected the hole of pipeline opening port of certain filter 1, vacuum unit 17 is communicated with this filter 1 fluid; On stationary ring model calling end face as connect vacuum unit 17 pipeline opening port hole and rotating ring module 14 on mutually stagger as the hole site of the pipeline opening port being connected this filter 1 time, fluid can not simultaneously through in hole and the rotating ring module 14 of the pipeline opening port as connection vacuum unit 17 as the hole of pipeline opening port being connected this filter 1, vacuum unit 17 is connected disconnection with this filter 1 fluid.High-pressure air source 19 is connected similar with filter 1.According to operation needs, by to the setting of hole in quantity, relative position etc. on the hole on rotating ring model calling end face and stationary ring model calling end face, just can, in filter 1 rotates with rotor 16, filter 1 be made optionally to be switched the vacuum unit 17 or high-pressure air source 19 that connect and stationary ring module 13 connects by rotating ring module 14; Also filter 1 can be made optionally to switch the vacuum unit 17 disconnecting and stationary ring module 13 connects or the high-pressure air source 19 disconnecting connection in stationary ring module 13 by rotating ring module 14.
Described vertical rotating gypsum dehydration machine 40 can also comprise:
The anti-precipitation unit 25 of liquid, comprises through the agitator bottom slurry tank 24, sealing device, drive motors and reductor.Agitator carries out disturbance to gypsum slurries in slurry tank 24 28 under the drive of drive motors and reductor, prevents slurry deposition, affects gypsum filter cake absorption.
Filter cake washing unit 29, comprises water pump, detergent line, filter cake drip washing nozzle, electricity (gas) dynamic valve, hand-operated valve and associated conduit.By filter cake drip washing nozzle, washing water is injected into gypsum filter cake surface and carries out drip washing, to reduce the rear gypsum chloride ion content of dehydration.
Control unit, comprises electrical control cabinet, liquid level gauge, frequency converter, flowmeter, the dynamic valve of electricity (gas) and other electric elements on the spot, automatically controls various parameters such as dewaterer running, cleanings.
As shown in Figure 9, the gypsum slurries 28 that thermal power plant's limestone-gypsum desulphurization system generates, after cyclone one-level is separated, underflow underflow liquid enters slurry tank 24 through charging aperture, agitator carries out disturbance to gypsum slurries in slurry tank 24 28 under the drive motors of the anti-precipitation unit 25 of liquid and the drive of reductor, prevent slurry deposition, affect gypsum filter cake absorption.The reductor rotor driven 16 of driver element 27 rotates, filtering table 9 coaxial rotatings all on rotor 16, concurrent working, adopts the filter 1 of separate unit structure under the effect of vacuum, gypsum slurries in slurries cell body 28 is carried out drying and dehydrating.
Under control unit effect, filtering table 9 concurrent working of described vertical rotating gypsum dehydration machine 40, the course of work of its work period of each filter 1 that each filtering table 9 comprises comprises:
A. midge process: the reductor of driver element 27 drives rotor 16, drives filtering table 9 to rotate in the slurry tank 24 having gypsum slurries 28; Filter 1 on rotor 16 rotates around rotor main shaft 10 towards discharge zone 31 direction, the vacuum unit 17 that the stationary ring module 13 of air water allocation units 15 connects accesses filter carbonated drink runner pipe 7 by rotating ring module 14 thus connects filter 1, negative pressure of vacuum is produced at the cavity 8 of filter 1, under negative pressure of vacuum effect, the filter 1 be immersed in gypsum slurries 28 adsorbs gypsum slurries 28, in gypsum slurries 28, solid gypsum is trapped within filter cloth 2 surface and forms filter cake, moisture is by filter cloth 2, supporting layer 3, enter cavity 8, and then be pumped by carbonated drink runner pipe 7;
B. process is blotted: filter 1 rotates liquid level, air water allocation units 15 make vacuum unit 17 continue access filter carbonated drink runner pipe 7 thus connect filter 1, under negative pressure of vacuum, the moisture be adsorbed in the filter cake on filter 1 surface continues to be sucked away thus filter cake is dried, moisture continues through filter cloth 2, supporting layer 3, enters cavity 8, and then is pumped by carbonated drink runner pipe 7;
C. discharging: along with rotor 16 change in location, when the filter 1 adsorbing dried filter cake enters discharge zone 31, air water allocation units 15 make vacuum unit 17 disconnection be connected with filter carbonated drink runner pipe 7, make high-pressure air source 19 access carbonated drink runner pipe 7 thus connect filter 1, compressed air flows into the cavity 8 of filter 1 by carbonated drink runner pipe 7, by supporting layer 3, and then to filter cloth 2 from inside to outside blowback air and remove the solid filter cake being trapped in filter cloth 2 surface, the simultaneously filter cloth 2 of cleaning and regeneration filter 1;
D. recirculation enters the subsequent work cycle: discharging completes, and under the drive of driver element 27, the filter 1 on rotor 16 is rotated further around rotor main shaft 10, and filter 1 enters the midge process of next work period.In vertical rotating gypsum dehydration machine 40 course of work, the above course of work is carried out again and again repeatedly.
After midge process, when filter 1 rotates liquid level, filter cake washing unit 29 can be dropped into, by filter cake drip washing nozzle, washing water is injected into gypsum filter cake surface and carry out drip washing, to reduce the rear gypsum chloride ion content of dehydration.
At discharging phase, for obtaining better discharging effect, doctor blade device 30 can be adopted, in conjunction with blowback air discharging.
Above vertical rotating gypsum dehydration machine 40 and method of work are except gypsum dehydration; the Separation of Solid and Liquid of other occasions can also be used for; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle; any amendment of making, equivalence are replaced, and all should be included within protection domain of the present utility model.
Claims (11)
1. a filter, is characterized in that: described filter (1) is the obturator comprising gas-liquid port, inside establishes cavity (8); Slurry liquid contacts is consolidated in the filter medium and to be filtered the containing that are positioned at described filter (1) surface, described filter medium is fixed on filter (1), described filter medium comprises and has the first selective soft material through ability, arrange inside described filter medium and there is the second selective supporting layer through ability (3), shaping for supporting filter medium; Described supporting layer (3) inner side abutted to cavity (8), and described cavity (8) connects the external system unit of setting by gas-liquid port.
2. filter according to claim 1, is characterized in that: described external system unit is vacuum vacuum unit (17), and under negative pressure of vacuum effect, to be filtered is trapped within described filter media surface containing the solid constituent in stereoplasm liquid; To be filtered passes through filter medium, supporting layer (3) containing the liquid component in stereoplasm liquid, enters cavity (8), and then is pumped by gas-liquid port.
3. filter according to claim 1, it is characterized in that: described external system unit is high-pressure air source (19), gases at high pressure flow into the cavity (8) of described filter (1) by gas-liquid port, by supporting layer (3), and then to filter medium from inside to outside blowback air thus remove and be trapped in the solid of filter media surface, the filter medium of cleaning and regeneration filter (1) simultaneously.
4. the filter according to any one of claim 1-3, it is characterized in that: described soft material is fibrous material or filter membrane material, or described filter medium is single or multiple lift filter cloth, or described filter medium is the combination of filter cloth and other filter membrane material.
5. the filter according to any one of claim 1-3, is characterized in that: described supporting layer (3) is made up of the high strength engineering material of trough of belt or hole or grid.
6. the filter according to any one of claim 1-3, it is characterized in that: the filter medium of described filter (1) is at least two panels filter cloth, the quantity of described supporting layer (3) is at least two pieces, described gas-liquid port is carbonated drink runner pipe (7), described filter medium can be single or multiple lift filter cloth, or described filter medium is the combination of filter cloth and other filter membrane material.
7. a vertical rotating gypsum dehydration machine, is characterized in that, described gypsum dehydration machine comprises main computer unit, vacuum unit (17), purges discharge unit; Wherein,
Described main computer unit comprises slurry tank (24), driver element (27), rotor (16); Described rotor (16) is arranged on slurry tank (24) two ends, described rotor (16) is provided with multiple along rotor main shaft (10) axial arranged, corotation axle, the filtering table (9) of vertical installation; Described filtering table (9) comprise multiple along rotor (16) circumferential hoop around arrange the filter (1) as described in any one of claim 1-6; Rotor (16) described in described driver element (27) drives, the filtering table (9) described in drive rotates in slurry tank (24); The upper gas-liquid port of filter (1) of described rotor (16) and the connection of external system unit comprise rotary connection unit, and described rotary connection unit is used for described filter (1) with in rotor (16) rotation, switches the external system unit connecting setting;
Described vacuum unit (17) connects described rotary connection unit, when vacuum unit (17) accesses filter (1) gas-liquid port by rotary connection unit, cavity (8) in filter (1) produces negative pressure of vacuum, under negative pressure of vacuum effect, to be filtered is trapped within filter media surface containing the solid constituent in stereoplasm liquid; Liquid component, by filter medium, supporting layer (3), is entered cavity (8), and then is pumped by gas-liquid port;
Described purging discharge unit comprises high-pressure air source (19), described high-pressure air source (19) connects rotary connection unit, when high-pressure air source (19) accesses filter (1) gas-liquid port by rotary connection unit, gases at high pressure flow into the cavity (8) of filter (1) by gas-liquid port, by supporting layer (3), and then to filter medium from inside to outside blowback air thus remove and be trapped in the solid of filter media surface, the filter medium of cleaning and regeneration filter (1) simultaneously.
8. vertical rotating gypsum dehydration machine according to claim 7, is characterized in that: described vertical rotating gypsum dehydration machine (40) also comprises filter cake washing unit (29) and/or described purging discharge unit also comprises doctor blade device (30).
9. vertical rotating gypsum dehydration machine according to claim 7, is characterized in that: the quantity of the described filter (1) included by described each filtering table (9) is 6 ~ 30.
10. the vertical rotating gypsum dehydration machine according to any one of claim 7-9, is characterized in that: described filtering table (9) is the plate-like of annular, and described filter (1) is fan-shaped.
11. 1 kinds of gypsum dehydration systems, is characterized in that: described gypsum dehydration system comprises the vertical rotating gypsum dehydration machine (40) as described in any one of claim 7-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884396.0U CN205145758U (en) | 2015-11-08 | 2015-11-08 | Filter, vertical rotatory gypsum hydroextractor, gypsum dewatering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520884396.0U CN205145758U (en) | 2015-11-08 | 2015-11-08 | Filter, vertical rotatory gypsum hydroextractor, gypsum dewatering system |
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| CN205145758U true CN205145758U (en) | 2016-04-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268235A (en) * | 2015-11-08 | 2016-01-27 | 杭州蓝轩环保科技有限公司 | Filtering plate, vertical rotation gypsum dehydrator, working method and gypsum dehydrating system |
| CN116116101A (en) * | 2023-04-04 | 2023-05-16 | 深圳市林科超声波洗净设备有限公司 | Industrial sewage treatment system |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268235A (en) * | 2015-11-08 | 2016-01-27 | 杭州蓝轩环保科技有限公司 | Filtering plate, vertical rotation gypsum dehydrator, working method and gypsum dehydrating system |
| CN116116101A (en) * | 2023-04-04 | 2023-05-16 | 深圳市林科超声波洗净设备有限公司 | Industrial sewage treatment system |
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Granted publication date: 20160413 Termination date: 20181108 |