CN206538326U - A kind of automatically cleaning flat board squeezing dewatering machine - Google Patents

Abstract

The utility model discloses a kind of automatically cleaning flat board squeezing dewatering machine, including frame, one end of frame is feed end, and the other end is discharge end, in addition to strainer；Be provided with least one flat board dewatering module between feed end and discharge end, the top of flat board dewatering module include can reciprocating upper splenium part vertically, bottom includes the subiculum part of fixation；The bottom surface of the upper splenium part and top surface of subiculum part is parallel and horizontal plane；The subiculum part includes being laid with sump pit on discharge opeing frid, the discharge opeing frid, the discharge outlet connection vacuum pick-up system of sump pit；The vacuum pick-up system includes vavuum pump and auto liquor drainage tank, and the outlet connection vavuum pump of auto liquor drainage tank, the liquid-inlet of auto liquor drainage tank is connected with the discharge outlet of sump pit respectively；Strainer cycle rotation, wherein the part between feed end and discharge end is located between upper splenium part and subiculum part.The beneficial effects of the utility model are：Discharge effect, the cleaning strainer of filtrate can be strengthened, press dewatering is more effectively carried out.

Description

A kind of automatically cleaning flat board squeezing dewatering machine

Technical field

The utility model is related to field of Environment Protection, more particularly, to a kind of automatically cleaning flat board press dewatering for Treatment of Sludge Machine.

Background technology

The annual Treatment of Sludge total demand of China is close to 40,000,000 tons, and the sludge average moisture content after primary dewatering is about 80%.The existing requirement to Treatment of Sludge is：Minimizing, innoxious, stabilisation, recycling, wherein minimizing are most important, Ask and the moisture content of sludge be reduced to 50% or so from 80%, sludge volume is reduced more than half, form relatively steady state, It cannot be easily caused secondary pollution.The mode that dehydration link is generally extruded using drying or depth in current Treatment of Sludge.Drying is needed A large amount of energy consumptions are consumed, the foul smell for needing further to handle can be also generated；Needed in extrusion process to sludge carry out dosing it is quenched, The side effect of medicament is that the over dry total amount for making sludge increases, and shale is deteriorated, and causes follow-up disposal difficult.Chinese patent literature CN104817247A, disclosed " pressure electro-osmosis desiccation machine " on the 5th, the equipment includes in August in 2015：Frame；Modular unit, It is arranged in the frame, including pressue device, pressure-bearing device, lead, Flexible Reset part, upper insulation plate, lower insulation plate； The pressue device is fixed in the frame；The two ends of the pressure-bearing device are set on the lead, the reset bullet Property part is also set on the lead；The upper insulation plate is fixed on the bottom of the pressure-bearing device, the lower insulation plate The lower section of upper insulation plate is set；The surface inserting of the upper insulation plate has positive plate；The surface inserting of the lower insulation plate has the moon Pole plate；Material conveying device；Distribution device and device for discharging.The program is realized by way of direct current drives liquid flowing Sludge dewatering.But the program, there is also some defects, the filtrate that dehydration is produced is the suspension for including a small amount of mud granule, Suspension is easily deposited in natural discharge process, blocks apocenosis passage, the sludge that the filtrate do not drained in time can be dehydrated Back suction, influences dehydrating effect.In addition, strainer frequently contacts sludge, mud granule can be attached on strainer, block the net on strainer Hole, influences follow-up dehydrating effect.

The content of the invention

The technical problem existed for above-mentioned existing scheme, it is de- that the utility model aims to provide a kind of automatically cleaning flat board squeezing Water dispenser, can strengthen discharge effect, the cleaning strainer of filtrate, more effectively carry out press dewatering.

To achieve these goals, the utility model is adopted the following technical scheme that：A kind of automatically cleaning flat board squeezing dewatering machine, Including frame, one end of frame is feed end, and the other end is discharge end, in addition to strainer；It is provided between feed end and discharge end At least one flat board dewatering module, the top of flat board dewatering module include can reciprocating upper splenium part vertically, bottom includes Fixed subiculum part；The bottom surface of the upper splenium part and top surface of subiculum part is parallel and horizontal plane；The subiculum part bag Include and sump pit is laid with discharge opeing frid, the discharge opeing frid, the discharge outlet connection vacuum pick-up system of sump pit；The vacuum Suction system includes vavuum pump and auto liquor drainage tank, the pumping end connection vavuum pump of auto liquor drainage tank, the liquid of auto liquor drainage tank Import is connected with the discharge outlet of sump pit respectively；Strainer cycle rotation, wherein the part position between feed end and discharge end Between upper splenium part and subiculum part.

It is that dewaterer devises a strainer, strainer sequentially passes through each roller under dynamic action in the technical program Body, forms a reciprocation cycle, wherein one section between feed end and discharge end, it is for carrying material, constituting Squeezing is interval, and the squeezing for the treatment of material is just completed in the interval.Realize squeezing action is flat board dewatering module, Ke Yishi One, can also be together in series multiple if necessary.Flat board dewatering module includes two parts up and down, and upper part is mainly Upper splenium part, can move up and down under dynamic Control, and bottom point includes subiculum part, the bottom surface of upper splenium part and subiculum part Top surface it is parallel to each other across strainer.When treating material is entered by feed end, and divide on strainer, strainer is transported to discharge end Dynamic, by material web to when squeezing in interval, upper splenium part is moved downward, across strainer pressing materials, carries out press dewatering.Squeezing The filtrate of generation is inhaled into vacuum pick-up system from the sump pit on discharge opeing frid, finally enters auto liquor drainage tank and realizes automatic row Liquid.Squeeze while aspirating filtrate, filtrate is difficult to accumulate in by material, will not be by dehydrated material back suction, can be all the time Keep completing the relatively low moisture content after dehydration.Simultaneously as vacuum pick-up system is designed with, the salvage stores particle on strainer Also it can be sucked away, the mesh of strainer can keep cleaning unimpeded as far as possible, contribute to strainer to keep good in follow-up cycle operation Good filterability.Material dewatering is finished, after upper splenium part rises, strainer carry dehydrated material to discharging end motion, Discharge end completes discharging.General, feed end can configure feed arrangement, for example, keep the charger of feed balance, can make thing Relatively uniform material scraping plate spread out on strainer of material etc.；Discharge end can configure drawing mechanism, for instance in resting position Unloader knife, strainer is operated to discharge end, after dehydrated material touches discharging scraper and separated from strainer, strainer Return downwards；Strainer is using strainer drive device as driving, and core component can be one or more power rollers；Upper splenium part it is upper Lower reciprocating motion can be controlled by cylinder or oil cylinder；The power-equipment and DC power supply of whole equipment can be by PLC controls Device is controlled.Flat board dewatering module can be quantitatively extended, and coordinated the strainer of necessary length, can be met not jljl The different press dewaterings requirement of material.

Preferably, being additionally provided with dc source；The bottom surface of the upper splenium part is fixed between positive plate, the both sides of positive plate Every the anode that dc source is uniformly connected with conductor；The top surface of the subiculum part is fixed with minus plate, the both sides of minus plate The evenly spaced negative electrode that dc source is connected with conductor.When material on filter-pressing strap under upper splenium part, dc source is connected, Electric current flows into minus plate by positive plate by material, to material synchronization implementation electroosmotic dewatering.Can also be by introducing direct current Mode to material carry out electroosmotic dewatering.Dc source is connected with evenly spaced conductor in the both sides of pole plate, it is possible to achieve The static input of electric energy and pole plate electric energy density mean allocation, it is to avoid virtual connection is struck sparks, extend the life-span of positive plate, improve electro-osmosis Effect.Integrated cost and effect, the material of conductor are advisable with red copper.

Preferably, being additionally provided with sealing frame between positive plate and strainer.Treating material is brought to correspondence sealing frame by strainer Position after, upper splenium part is moved downward, and positive plate touches sealing frame first, and constitutes sealing space with sealing frame, minus plate, Treating material is compressed into this sealing space, and electroosmotic dewatering is carried out while physical squeezing is dehydrated.Upper splenium part and Relative motion between subiculum part, makes the material in squeezing interval to be overflowed when being pressurized by pressure feedback deformation to surrounding. This programme devises sealing frame, and treating material is only capable of deforming in the space of sealing frame when being pressurized, no longer overflowed to surrounding. Material contacts anode plate and cathode plate respectively up and down, it is possible to persistently implement electro-osmosis.

Preferably, the sealing frame is connected with the compressible elastic component of vertical direction, the bottom pair of flat board dewatering module That answers is provided with the guiding mechanism that guide direction is vertical direction.When upper splenium part touches treating material, with pending thing Material institute water content is extruded discharge, and thickness is thinning, and sealing frame can be moved downward with the guide direction of guiding mechanism, and be remained The bottom surface contact treating material of upper splenium part simultaneously applies pressure.The technical program devises for sealing frame can be perpendicular after compression The structure that Nogata stretches upwards.When upper splenium part pushes material, material can be thinning in the range of sealing frame, but when material contains When water is higher, material thickness is not higher than the height of sealing frame frame, and the bottom surface of upper splenium part is only capable of touching sealing frame Frame, it is impossible to which the material of opposite side inframe applies enough pressure.After this programme is applied, when upper splenium part is pushed, first Material can be spread out in the range of sealing frame；When upper splenium part continues to push, when bottom surface touches the housing of sealing frame, sealing frame The elastic force of elastic component can be overcome to move gradually downward, in the process the meeting of the distance between top surface of upper splenium part and subiculum part It is less and less, and positioned at this position material can not displacement, can by the increasing pressure, realize fully dehydration；Finally, reach After being required to dehydration, upper splenium part rises, and seal groove drives strainer to recoil to home position upwards.The elastic component wherein used can To be steel spring or air spring, guiding mechanism can be with lead or the keyway being vertically arranged fit structure etc., can To be together with spring assembly or be independently arranged.

Preferably, the height that the sealing frame is higher by negative electrode plate top surface is not less than 30mm.Limit sealing frame and be higher by negative electrode The height of plate top surface, is limited volume after the squeezing of material during squeezing every time in sealing frame.If highly set Height, may cause squeezing insufficient, and dehydrating effect, which fails to meet, to be required；Highly set too low, it is de- that single squeezing action is completed Water workload is too small, influences operating efficiency.

Preferably, the material of the sealing frame is rigid insulating materials.Use insulating materials, it is to avoid electric current is direct Minus plate is flow to from the sealed frame of positive plate, and rigid makes sealing frame itself not to be pressed down to force compression deformation, so as to influence The volume of sealing space.

Preferably, the discharge opeing groove depth laid on the discharge opeing frid is not less than 20mm.By the depth design of sump pit It is relatively deep, the possibility blocked by the suspended particulate in filtrate can be reduced with aspect, on the one hand aspirated there is provided broader filtrate Passage.Filtrate is accelerated to be sucked the speed for leaving treating material.

Preferably, the sump pit laid on discharge opeing frid is connected in length and breadth in the horizontal direction.Sump pit is in the horizontal direction On connect in length and breadth, constitute the network structure of similar matts, blocking all without to entirety occurs in the sump pit of any one position Suction effect impact, filtrate can be still sucked away by network structure from the sump pit on blocking position periphery.

Preferably, being evenly equipped with the through hole of some confession pressing filtrate discharges on the minus plate, these through holes pass through discharge opeing The discharge outlet connection vacuum pick-up system of groove.Through hole is directly opened up on minus plate, filtrate can be made most fast and entered from minus plate Sump pit is sucked away, and improves dewatering speed.

Preferably, the bottom of the flat board dewatering module is additionally provided with purging system；The purging system includes rinse water Pump and cleaning water pipe；Flushing water pump connection cleaning water pipe, the spray direction of the shower nozzle of cleaning water pipe is interval interior with being in non-squeezing Strainer in-plane formation angle.When strainer returns back to feed end by discharge end, cleaning fluid is pumped to by flushing water pump Water pipe is cleaned, is sprayed from shower nozzle to strainer surface.Because the squeezing effect of the technical program is preferable, the material after squeezing contains Water is relatively low, therefore material particles are easily sticked on strainer, and same position is after repeatedly squeezing operation, the aperture on strainer Easily it is blocked, influences follow-up squeezing effect.Therefore, this programme specially devises purging system, by purging system to filter Band carries out cleaning showers, effectively solves this problem.In order to obtain more preferable spraying effect, it may be considered that in cleaning fluid Compressed air is mixed, strainer is sprayed with gas-liquid mixture.

Preferably, the purging system also includes vacuum tank, vacuum tank is located at the shower nozzle for not setting cleaning water pipe of strainer Side；Vacuum tank one end connects vavuum pump, and one end is provided with opening, and opening direction is just to the spray side for the shower nozzle for cleaning water pipe To.In order to improve cleaning performance and be easy to collect raffinate after cleaning, this programme is provided with vacuum tank, and vacuum tank connects vavuum pump, The opening of vacuum tank is just to the spray direction for the shower nozzle for cleaning water pipe.When spraying operation, open true in vavuum pump, vacuum tank Dummy status can by opening by spray liquid and by sweep away come material particles siphon away.

Preferably, the spray direction of the shower nozzle of the cleaning water pipe and the plane side of the strainer in non-squeezing interval It is right angle to the angle of formation.Right angle is sprayed, the best results of spray, and the consumption of spray liquid is minimum, and the pressure of spray can be adjusted Section is most saved water and energy to minimum.

In summary, the beneficial effects of the utility model are：Discharge effect, the cleaning strainer of filtrate can be strengthened, more had The carry out press dewatering of effect.The dewaterer designed using this programme, can not only be applied in traditional sludge dewatering treatment, also It can be played a role in fields such as food, bio-pharmaceuticals, chemical industry, construction materials.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model, and dc source and connection circuit are not shown in the drawing.

Fig. 2 is Fig. 1 A-A sectional views.

Fig. 3 is the structural representation of flat board dewatering module.

Fig. 4 is that sealing frame applies the fiting relation figure on flat board dewatering module.

Fig. 5 is the top view of sealing frame.

Fig. 6 is the schematic diagram of vacuum pick-up system and purging system.

Wherein：1 frame, 2 chargers, 3 power rollers, 4 sealing frames, 5 roll bodies, 6 strainers, 7 strainer motors, 8 dischargings are scraped Knife, 9 purging systems, 10 vacuum pick-up systems, 14 oil cylinders, 15 increased pressure boards, 16 insulation boards, 17 positive plates, 18 minus plates, 19 discharge opeings Frid, 20 pressure-bearing casings, 21 nylon laths, 22 springs, 23 leads, 24 fixed plates, 25 vavuum pumps, 26 auto liquor drainage tanks, 27 Pneumatic operated valve, 28 vacuum manifolds, 29 manifolds, 30 flushing water pumps, 31 cleaning water pipes, 32 vacuum tanks.

Embodiment

The utility model is further described with embodiment below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, Figure 3 shows, it is a kind of automatically cleaning flat board squeezing dewatering machine.The dewaterer includes being fixed on ground Frame 1, the right-hand end of frame is feed end, and left-hand end is discharge end, and feed end is provided with charger 2, and discharge end, which is provided with, to be unloaded Expect scraper 9.Strainer 6 is installed, strainer is propped up by several roll bodies 5 in frame, strainer motor 8 drives power roller 3 to rotate, The circulating ring for driving strainer formation to rotate counterclockwise.It is interval that strainer constitutes squeezing from charger to one section between unloader knife. At least one flat board dewatering module is installed in the interval, this example is two and is cascaded.Flat board dewatering module includes upper Lower two parts：Top includes increased pressure board 15, insulation board 16 and the positive plate 17 from top to bottom overlapped successively；The two ends of positive plate to Upper bending, kink is detachably mounted to the relative position of insulation board by bolt, and increased pressure board, which is installed in, is fixed on frame On the oil cylinder 14 of top, the bottom surface of positive plate is horizontal plane；Bottom point includes minus plate 18, the insulation from top to bottom overlapped successively Discharge opeing frid 19 and pressure-bearing casing 20, the both sides of minus plate are folded upward at, and kink is detachably mounted to row by bolt The relative position of liquid bath plate.The evenly spaced anode that dc source is connected with copper belt in both sides of pole plate；The both sides of minus plate The evenly spaced negative electrode that dc source is connected with copper belt.In this example, anode flat plate uses precious metal material, and sludge to connect Tactile bottom surface sintering has the conductive coating of electrical erosion resistance；Minus plate material is 316 stainless steels.The sump pit laid on discharge opeing frid The depth that depth is not less than in 20mm, this example is 25mm, and sump pit is connected in length and breadth in the horizontal direction, constitutes similar matts Network structure.

As shown in figure 5, sealing frame is rectangle, outer framework is nylon lath 21.As shown in Figure 3, Figure 4, sealing frame is located at the moon The top of pole plate, the lower section of strainer, its height is not less than 30mm higher than minus plate upper surface, and this example is higher than minus plate upper surface 35mm.The guiding mechanism of above-below direction is respectively and fixedly provided with four side lateral walls of outer framework, this example uses lead 23, The lower end of lead, which is fixed with fixed plate 24, the side wall of pressure-bearing casing, is fixed with location-plate, and lead passes through location-plate, fixed Being abutted between position plate and the upper end fixing point of lead has spring 22.

As shown in fig. 6, and with reference to shown in Fig. 1, this dewaterer is also devised with vacuum pick-up system 10 and purging system 9.Row The groove and through hole of discharge opeing are evenly equipped with liquid bath plate, these grooves and through hole connect vacuum manifold 28 respectively, then are collected to collection Liquid house steward 29, the import of the outlet connection auto liquor drainage tank 26 of manifold, the pumping end connection vavuum pump 25 of auto liquor drainage tank, And the through hole of some confession pressing filtrate discharges is evenly equipped with minus plate, these through holes connect with the groove and through hole on discharge opeing frid It is logical, drain into auto liquor drainage tank for the filtrate produced will be squeezed.Purging system is arranged on the lower section of frame, and flushing water pump 30 is connected Water pipe 31 is cleaned, strainer is close to plane on vacuum tank 32 and operated, and cleaning water pipe is arranged on above strainer, and shower nozzle is perpendicular to strainer Plane, vacuum tank lower end connects vavuum pump, the spray direction of the upper end open of vacuum tank just to shower nozzle by vacuum pick-up system. The outlet side of vavuum pump can also send into compressed air in cleaning fluid, and the cleaning fluid for being mixed with compressed air is pumped into spray by water pump Head is sprayed.In vacuum pick-up system, in order to ensure vacuum effectiveness, multiple pneumatic operated valves 27 are provided with pipeline.

The automatically cleaning flat board squeezing dewatering machine of this example, its working condition is：Charger first on the right side of machine respectively will Two parts of appropriate pending muds are delivered on strainer, strainer drive sludge to left movement, make two parts of sludge respectively correspond to one it is close The position of frame is sealed, now the positive plate of top is pressed downward under oil cylinder pushing, and the bottom surface of positive plate contacts sludge first Gradually spread out after summit, sludge stress in the range of sealing frame around, thickness is also gradually thinning, part moisture content starts to overflow Go out.Then, the bottom surface of positive plate contacts the outer framework of sealing frame, makes sealing frame integrally overcome spring to move down, and is located at Sludge between sealing frame and the bottom surface of positive plate is supported by lower section discharge opeing frid, it is impossible to bottom offset, therefore by The increasing extruding force in top, its thickness more and more thinner, substantial amounts of moisture content is extruded.Simultaneously, dc source starts Power supply, minus plate of the direct current by the positive plate of top through the sludge stream in sealing frame downwards, electro-osmosis is implemented to sludge Dehydration, is required until meeting dehydration.Then oil cylinder pushing positive plate, which rises, resets, and circuitry cuts, electro-osmosis terminates, and spring is also pushed away Dynamic sealing frame is risen overally reset, and strainer, which carries two parts of sludge for having completed dehydration, to be continued to left movement, during to high order end, is unloaded Material scraper successively with two parts dewatered sludge contact, sludge is separated with strainer, strainer cycle operation downwardly and to the right, to sludge Press dewatering step is completed.

In the press dewatering step to sludge, there is substantial amounts of filtrate to carry a small amount of mud granule with the form of suspension It is extruded, these suspension enter vacuum manifold by sump pit, hole for being laid on the through hole on minus plate, discharge opeing frid etc., Manifold is collected to again, and auto liquor drainage tank is inhaled into by pull of vacuum, and final realize is dealt carefully with and discharged.

In the press dewatering step to sludge, strainer can speckle with a small amount of mud granule after being separated with sludge, with Operation continues, and these particles are more and more, blocks the filter opening on strainer, can influence the operating efficiency of equipment.Flushing water pump is opened Supplied water after opening, vavuum pump supplies compressed air after opening, steam mixture sprays from shower nozzle, carries out cleaning showers to strainer, washes away These mud granules, keep the unobstructed of filter opening.The raffinate swept away is siphoned away by the opening of vacuum tank, feeding auto liquor drainage tank processing.

The automatically cleaning flat board squeezing dewatering machine of this example, substantial amounts of optimization, energy have been carried out in traditional electroosmotic dewatering equipment More efficient realizes electro-osmosis press dewatering, has used sealing frame to improve the efficiency of press dewatering, has used vacuum suction System can collect filtrate, use purging system to be rinsed to strainer., can be by each height in the control of equipment The power control system of equipment is integrated in PLC control cabinet, realizes the convenient manipulation of operator.

The automatically cleaning flat board squeezing dewatering machine of this example, has used two flat board dewatering modules.It is such as inessential, can also only it make With a flat board dewatering module；If any application demand, flat board dewatering module can also be quantitatively extended, and be one another in series Come, coordinate the strainer of necessary length, the different press dewatering requirements of different material can be met.In multiple flat boards using series connection During dewatering module, it can also make marching to different flat boards dehydration moulds successively with a treating material by programming Control When in block, serial dehydration is carried out from shallow to deep, to realize running at high speed for equipment, improves disposed of in its entirety effect.

Claims (10)

1. a kind of automatically cleaning flat board squeezing dewatering machine, including frame（1）, one end of frame is feed end, and the other end is discharge end, It is characterized in that, in addition to strainer（6）；At least one flat board dewatering module, flat board dehydration mould are provided between feed end and discharge end The top of block include can reciprocating upper splenium part vertically, bottom includes the subiculum part of fixation；The bottom surface of upper splenium part And horizontal plane parallel with the top surface of subiculum part；The subiculum part includes discharge opeing frid（19）, cloth on the discharge opeing frid Provided with sump pit, the discharge outlet connection vacuum pick-up system of sump pit；The vacuum pick-up system includes vavuum pump（25）With oneself Dynamic Drainage tank（26）, the pumping end connection vavuum pump of auto liquor drainage tank, the liquid-inlet of auto liquor drainage tank respectively with sump pit Discharge outlet is connected；Strainer cycle rotation, wherein the part between feed end and discharge end is located at upper splenium part and lower supporting portion Between part.

2. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 1, it is characterized in that, it is additionally provided with dc source；Institute The bottom surface for stating splenium part is fixed with positive plate（17）, the evenly spaced sun that dc source is connected with conductor in both sides of positive plate Pole；The top surface of the subiculum part is fixed with minus plate（18）, the both sides of minus plate are evenly spaced to connect direct current with conductor The negative electrode in source.

3. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 2, it is characterized in that, between positive plate and strainer also Provided with sealing frame（4）.

4. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 3, it is characterized in that, the sealing frame is connected with perpendicular Nogata is to compressible elastic component（22）, the bottom of flat board dewatering module is corresponding to be provided with the guiding that guide direction is vertical direction Mechanism（23）.

5. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 1 or 2 or 3 or 4, it is characterized in that, the discharge opeing The discharge opeing groove depth laid on frid is not less than 20mm.

6. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 1 or 2 or 3 or 4, it is characterized in that, discharge opeing frid The sump pit of upper laying is connected in length and breadth in the horizontal direction.

7. a kind of automatically cleaning flat board squeezing dewatering machine according to Claims 2 or 3 or 4, it is characterized in that, on the minus plate The through hole of some confession pressing filtrate discharges is evenly equipped with, these through holes connect vacuum pick-up system by the discharge outlet of sump pit.

8. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 1 or 2 or 3 or 4, it is characterized in that, the flat board The bottom of dewatering module is additionally provided with purging system；The purging system includes flushing water pump（30）With cleaning water pipe（31）；Cleaning Water pump connection cleaning water pipe, cleans spray direction and the in-plane shape of the strainer in non-squeezing interval of the shower nozzle of water pipe Into angle.

9. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 8, it is characterized in that, the purging system also includes Vacuum tank（32）, vacuum tank is positioned at the side of the shower nozzle for not setting cleaning water pipe of strainer；Vacuum tank one end connects vavuum pump, one end Provided with opening, opening direction is just to the spray direction for the shower nozzle for cleaning water pipe.

10. a kind of automatically cleaning flat board squeezing dewatering machine according to claim 9, it is characterized in that, the spray of the cleaning water pipe The spray direction of head is right angle with the angle in the non-in-plane formation for squeezing the strainer in interval.