A kind of arch belt negative pressure filtration device
Technical field
The present invention relates to filter plant technical field, particularly relate to a kind of arch belt negative pressure filtration device.
Background technology
Defecator is to be widely used in the fields such as chemical industry, oil, coal, environmental protection and food to realize the equipment of solid-liquid separation, be currently mainly used is chamber filter press and band filter, and wherein chamber filter press also exists that equipment investment is big, structure is complicated and inefficiency, power consumption can only be caused big and the defect such as poor filtration effect by batch operation.Currently used band filter, band filter especially with high pressure filtration system, although can improve the squeezing effect to separating material, reduces the moisture content of solid material, and realize work continuously, but still equally exist bulky, energy consumption is high and baroque defect.
Summary of the invention
Present invention aims to the deficiency of general belt filtering device, a kind of arch belt negative pressure filtration device is provided, by arranging multiple live-roller being distributed in certain radian arch between rotation wheel, make filter bag be around in rotation wheel and form an arch filtering surface with multiple live-roller peripheries, thus in the case of two rotation wheel spacing are constant, increase considerably the work area of filtration, it is effectively improved work efficiency and filter effect;Simultaneously by the opening of filter chamber is set to the shape consistent with arch filtering surface, and by arranging the supporting network of an arch with same radian at filter chamber's opening part, can effectively play and support filter bag to prevent filter bag deformation in the case of evacuation from causing vacuum inadequate and the generation of material from leakage to be filtered, to ensure to filter being smoothed out of work.
Another object of the present invention is, by arranging registration roller in the end of arch filtering surface, on the one hand make filter bag according to first retainer through top, filter chamber, so that the dual-side of filter bag and filter chamber's inwall support to avoid the leakage of material to be filtered mutually, on the other hand filter bag can be made to fit tightly in supporting network, avoid being deformed under filter bag differential pressure action thereon below, filter bag is played effective fixing and sealing function, additionally by the afterbody at arch filtering surface, one scraper plate supported mutually with filter bag is set, fixing filter bag can be played and scrape the dual function of solid material on filter bag.
The technical scheme is that
A kind of arch belt negative pressure filtration device, including:
Filter drive mechanism, it includes rotating wheel, live-roller and filter bag, described rotation wheel includes that the first rotation wheel and second rotates wheel, described first rotation wheel rotates with second and is provided with a certain distance and is set to consistent height between wheel, described live-roller is arranged at described first and rotates between wheel and the second rotation wheel and rotate wheel and the second position rotating wheel higher than described first, described filter bag is around in described rotation wheel and live-roller periphery is formed and carried out single-direction transmission by rotation wheel drive, and forms the filtration drive mechanism of an arch filtering surface;
Filter chamber, it is the housing of one end open, described filter chamber is arranged at below the arch filtering surface of described filtration connecting gear, described filter chamber opening is set to all corresponding with the cross section of arch filtering surface and the edge arch of cross section and edge, and the inwall of the edge of described arch filtering surface and described filter chamber opening is supported mutually;
It addition, described filter chamber is additionally provided with out filtrate line, described in go out filtrate line and be connected with vacuum pump and carried out evacuation by vacuum pump and make described filter chamber present negative pressure state.
Preferably, in described arch belt negative pressure filtration device, the quantity of described live-roller can be three or more than three, and the plurality of live-roller is arranged in the way of can forming an arch consistent with the radian of described arch filtering surface.
Preferably, in described arch belt negative pressure filtration device, the opening of described filter chamber is provided with the supporting network consistent with the size of described arch filtering surface and radian, described supporting network is made up of multiple mesh sheet, the plurality of mesh sheet is respectively arranged between adjacent two live-rollers and the position of the most described live-roller top edge, and the side of the plurality of mesh sheet is connected fixing respectively with described filter chamber inwall.
Preferably, in described arch belt negative pressure filtration device, described filtration connecting gear is additionally provided with registration roller, described registration roller is arranged at the end of the arch filtering surface along filter bag transmission direction and is arranged at the top of filter bag, and the most described registration roller forms one by parallel with the minor face of described filter chamber and with described filter chamber minor face and arranges in the way of the path of the consistency of thickness of filter bag.
Preferably, in described arch belt negative pressure filtration device, two ends with the minor face of described filter chamber respectively, the two ends of described registration roller are flexibly connected, described movable connection method is, the minor face of described filter chamber be respectively fixed at two ends with by the L-shaped axle horizontally and vertically formed, the axle center of described registration roller is provided with the perforate that the transverse axis with L-shaped axle matches, and is set in by the way of rotating with the transverse axis of L-shaped axle for axle center on the transverse axis of L-shaped axle.
Preferably, in described arch belt negative pressure filtration device, the afterbody along the arch filtering surface of filter bag transmission direction is provided with scraper plate, supporting mutually with described filter bag of described scraper plate.
Preferably, in described arch belt negative pressure filtration device, described filtration drive mechanism be arranged above tremie pipe, the opening of described tremie pipe is corresponding with the opening of filter chamber.
The method have the advantages that arch belt negative pressure filtration device of the present invention, by arranging multiple live-roller being distributed in certain radian arch between rotation wheel, make filter bag be around in rotation wheel and form an arch filtering surface with multiple live-roller peripheries, thus two rotate wheel spacing constant in the case of than the filtration work area increase of general belt filtering device more than at least 1/3, so that the work efficiency filtered improves corresponding amplitude, and owing to the increase of filtering surface makes filter effect more preferable, the attached liquid amount of formed filtering residue reduces more than 10% than the attached liquid amount of general belt filtering device, simultaneously because the filtering residue attached liquid amount formed is low the driest, thus easily depart from filter bag, filter bag is made to be readily cleaned, ensure that the efficient circulation of filter bag uses.
By arranging supporting network at filter chamber's opening part, it is possible to effectively support filter bag and cause vacuum not and the generation of material from leakage with filter bag in the case of preventing evacuation owing to the existence of top and bottom pressure differential deforms, it is ensured that filter being smoothed out of work.
Additionally, by arranging registration roller in the end of arch filtering surface, on the one hand ensure filter bag according to first retainer through top, filter chamber, so that the dual-side of filter bag and filter chamber's inwall support to avoid the leakage of material to be filtered mutually, on the other hand filter bag can be made to fit tightly in supporting network, play effective fixing and sealing function, and by arranging a scraper plate supported mutually with filter bag at the afterbody of arch filtering surface, fixing filter bag can be played and scrape the dual function of solid material on filter bag.The present invention has that filtration work efficiency height, good effect of separating solid from liquid, volume be little, advantages of simple structure and simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of arch belt negative pressure filtration device of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is elaborated, to make those of ordinary skill in the art can implement according to this after referring to this specification.
As it is shown in figure 1, a kind of arch belt negative pressure filtration device of the present invention, including:
Filter drive mechanism, it includes rotating wheel 1, live-roller 2 and filter bag 3, the described wheel 1 that rotates includes that the first rotation wheel and second rotates wheel, described first rotation wheel rotates with second and is provided with a certain distance and is set to consistent height between wheel, described live-roller 2 is arranged at described first and rotates between wheel and the second rotation wheel and rotate wheel and the second position rotating wheel higher than described first, described filter bag 3 is around in described rotation wheel 1 and live-roller 2 periphery is formed to be driven by rotation wheel 1 and carries out single-direction transmission, and form the filtration drive mechanism of an arch filtering surface 5, and filter bag 3 can be replaced according to practical situation.The effect of wherein said live-roller 2 essentially consists in props up the middle part of filter bag 3 to certain height, make the work area of filter bag 3 elongate in the case of not changing two rotation wheel 1 distances, thus reach on the premise of not increasing defecator volume, be effectively increased the purpose filtering work efficiency.Rotation is taken turns 1 and is connected with motor and is driven by rotating, thus drives filter bag 3 to carry out transmission, owing to filter bag 3 is in close contact with live-roller 2, live-roller 2 can be driven in transmission process to rotate, thus reduce the frictional force of filter bag 3 and live-roller 2.
Filter chamber 4, it is the housing of one end open, this housing can be the barrel-shaped of the hollow of one end open, described filter chamber 4 is arranged at below the arch filtering surface 5 of described filtration connecting gear, described filter chamber 4 opening is set to all corresponding with the cross section of arch filtering surface 5 and the edge arch of cross section and edge, and the inwall of the edge of described arch filtering surface 5 and described filter chamber 4 opening is supported mutually;Described filter chamber 4 is fixedly supported to the height of overhead more than 30cm by support, and in order to ensure the edge of arch filtering surface 5 and combining closely of filter chamber 4 opening inwall, filter chamber 4 inwall and filter bag 3 dual-side contact site are provided with the raised line for sealing function.
It addition, described filter chamber 3 is additionally provided with out filtrate line 6, described in go out filtrate line 6 and be connected with vacuum pump 7 and carried out evacuation by vacuum pump 7 and make described filter chamber 4 present negative pressure state.Required for the negative pressure value that reaches not less than negative 0.5 MPa, material to be filtered is uniformly distributed on filter bag 3 by dog-house when filter bag 3 arrives 4 top, filter chamber, the filter bag 3 carrying material to be filtered continues to move to form arch filtering surface 5 along live-roller 2, start vacuum pump 7, owing to there is certain pressure differential with filter chamber 4 on arch filtering surface 5, material to be filtered is squeezed, liquid therein quickly through the mesh of filter bag 3 in filter chamber 4, and discharge filter chamber 4 by going out filtrate line 6, and solid matter is evenly distributed on filter bag 3 and forms the filtering residue being more dried, and drop in the transmission process of filter bag 3, complete the solid-liquid separation of material to be filtered.
In described arch belt negative pressure filtration device, the quantity of described live-roller 2 can be three or more than three, and the plurality of live-roller 2 is arranged in the way of can forming an arch consistent with the radian of described arch filtering surface 5.The plurality of live-roller 2 is the cylinder that can rotate, and is fixed on certain position by frame, and the set-up mode of live-roller 2 is all vertical with filter bag 3, and filter bag 3 is played effective supporting role.
In described arch belt negative pressure filtration device, the opening of described filter chamber 4 is provided with the supporting network consistent with the size of described arch filtering surface 5 and radian, described supporting network is made up of multiple mesh sheet, the plurality of mesh sheet is respectively arranged between adjacent two live-rollers 2 and the position of the most described live-roller 2 top edge, and the side of the plurality of mesh sheet is connected fixing respectively with described filter chamber 4 inwall.The mesh of the plurality of mesh sheet, less than the mesh of filter bag 3, forms cascade filtration effectively, on the one hand increases the effect filtered, and on the other hand avoids out the blocking of filtrate line 6.
In described arch belt negative pressure filtration device, described filtration connecting gear is additionally provided with registration roller 8, described registration roller 8 is arranged at the end of the arch filtering surface 5 along filter bag 3 transmission direction and is arranged at the top of filter bag 3, and the most described registration roller 8 forms one by parallel with the minor face of described filter chamber 4 opening and with described filter chamber 4 opening minor face and arranges in the way of the path of the consistency of thickness of filter bag 3.Owing to the length of filter bag 3 is longer, the skew of certain angle is often there is during the driving wheel 1 that rotates carries out transmission, so when arriving above filter chamber 4, the side of filter bag 3 can produce gap with the inwall of filter chamber 4, affect the vacuum of filter chamber 4 and cause the leakage of material to be filtered, filter bag 3 not only can be made to be adjusted in time before arriving above filter chamber 4 by arranging registration roller 8, and make filter bag 3 fit tightly in the minor face of filter chamber 4 opening, play sealing function well.
In described arch belt negative pressure filtration device, two ends with the minor face of described filter chamber 4 opening respectively, the two ends of described registration roller 8 are flexibly connected, described movable connection method is, the minor face of described filter chamber 4 opening be respectively fixed at two ends with by the L-shaped axle horizontally and vertically formed, the axle center of described registration roller 8 is provided with the perforate that the transverse axis with L-shaped axle matches, and be set in by the way of rotating with the transverse axis of L-shaped axle for axle center on the transverse axis of L-shaped axle, and the longitudinal axis of L-shaped axle is fixed with filter chamber 4 sidewall and is connected, so that registration roller 8 is parallel to the minor face of filter chamber 4 opening and can be driven the frictional force carrying out rotating with reduction and filter bag 3 by filter bag 3.
In described arch belt negative pressure filtration device, the afterbody along the arch filtering surface 5 of filter bag transmission direction is provided with scraper plate 9, supporting with described filter bag 3 phase of described scraper plate 9.The width of described scraper plate 9 is consistent with the width of filter bag 3, and scraper plate 9 is also parallel with the minor face of filter chamber 4 opening with one side that filter bag 3 phase is supported, and with the minor face of filter chamber 4 opening, there is the gap being only capable of making filter bag 3 pass through, on the one hand filter bag 3 is made to fit in the short slab of filter chamber 4 opening, ensure the sealing effectiveness of filter chamber 4, on the other hand more thoroughly scrape filtering residue accompanying on filter bag 3.
In described arch belt negative pressure filtration device, described filtration drive mechanism be arranged above tremie pipe, the opening of described tremie pipe is corresponding with the opening of filter chamber 4, and material to be filtered can uniformly add to filter bag 3 top in transmission.
Although embodiment of the present invention are disclosed as above, but it is not restricted in description and embodiment listed utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, it is easily achieved other amendment, therefore, under the general concept limited without departing substantially from claim and equivalency range, the present invention is not limited to specific details and shown here as the legend with description.