KR20020096769A - Vacuum high pressure dehydrator with improved dewatering efficiency - Google Patents

Abstract

PURPOSE: A vacuum dehydrator for sludge dewatering is provided to efficiently remove water from wet sludge by installing a microwave generator for irradiating microwave to wet sludge in conventional vacuum dehydrator. CONSTITUTION: The vacuum dehydrator comprises a gravitational separation part(10) for removing water from the sludge; a first dehydration part(20) composed of a vacuum dewatering roller(24) formed by prominence and groove, and covered with a frame(22) of a microwave generating equipment(21) for irradiating microwave to disturb and decompose the particles of the sludge, to the grooves connecting pipes communicating with vacuum pipe are formed and to the opposite side valves are installed to supply vacuum by the actuation of press button pressed by filtration fabric(2); a second dehydration part(40) for advanced removal of water by discharge roller(42); a third dehydration part(50) composed of high vacuum roller(51), tension roller(52) and press roller, the high vacuum roller(51) formed by prominence and groove, to the grooves connecting pipes communicating with vacuum pipe are formed and to the opposite side press button are installed to supply vacuum by pressing of filtration fabric(2).

Description

Vacuum high pressure dehydrator with improved dewatering efficiency

The present invention relates to a dehydrator for removing water in the sludge generated by the purification of wastewater generated in sewage treatment plants or industrial sites, and more particularly, the first dehydration unit, the second dehydration unit, the third dehydration unit ( In addition to improving the structure of the roller constituting the high pressure dewatering part, the water in the sludge is separated and removed by vacuum suction until the sludge is discharged in the cake state, and is installed on the outer peripheral surface of the vacuum suction dewatering roller of the first dewatering part. The present invention relates to a vacuum high-pressure dehydrator with a dehydration efficiency that enables the water separation in the sludge to be made smoothly by disturbing and destroying the particles of the sludge with a microwave generator.

In general, when removing the water contained in the sludge generated in sewage treatment plants and industrial wastewater, the water is separated and dewatered from the sludge using a dehydrator.

The sludge to be introduced into the dehydrator participates in a dehydrating aid (polymer coagulant) in the mixer, and then the sludge is supplied and transported uniformly on the filter cloth by a chute, and the moisture in the sludge applied to the filter cloth is applied to gravity. By primary removal.

As described above, the area from which the water of the sludge is removed from the filter cloth is called a gravity dehydration part.

As the sludge is naturally removed by gravity in the state loaded on the filter cloth as described above, the filter cloth is pressurized by passing through the vacuum suction roller of the first dewatering part and the pressure roller installed on the outer circumferential surface of the vacuum suction roller to separate the water from the sludge. The separated water is sucked into the vacuum suction roller and then removed secondarily.

The sludge from which the moisture is removed from the first dewatering portion is passed through the rollers of the second dehydration portion positioned between the first dehydration portion and the third dehydration portion (high pressure dewatering portion), and the water is removed three times.

The sludge from which moisture is removed from the second dehydration part is moved to the third dehydration part and has a pressure roller to the drum roller and the outer circumferential surface of the drum roller. The sludge is moved to the third dewatering part (high pressure dewatering part) made of a tension belt. After the water is dehydrated, it is discharged.

As described above, the conventional vacuum high pressure dehydrator for removing the water in the sludge firstly, the vacuum suction roller of the first dewatering part for vacuum suctioning and removing the water in the sludge that is applied to the filter cloth and transported is in the form of a common tube, Since holes are formed to suck water in vacuum, water separation in the sludge applied and transported to the filter cloth is made only at a portion coinciding with the holes, so that dehydration efficiency by vacuum suction is not high. Second, the moisture content of the final sludge cake is high because vacuum is sucked in the sludge only in the first dewatering part and water is removed only by the pressing force in the remaining second and third dehydrating parts (high pressure dewatering part). ; Third, the vacuum suction roller of the first dewatering part is in the form of a conventional tube, so that the area where the vacuum should be made is too large and the vacuum pump operation time is long, and there is a disadvantage in that the loss of electrical energy increases accordingly; Fourth, the high water content of the final sludge cake has a problem of generating secondary soil pollution and water pollution due to energy waste and land erosion and leachate from landfill due to sludge incineration.

The present invention developed to solve the problems of the conventional dehydrator as described above, in the conventional dehydrator consisting of a self-gravity portion, the first dehydration portion, the second dehydration portion, the third dehydration portion (high pressure dehydration portion), The structure of the roller (drum) constituting the first, second, and third dehydration parts at the same time as the installation of the microwave generating device of the dehydration part, firstly, the microwave generating device installed on the outer circumferential surface of the vacuum suction dewatering roller of the first dehydration part. After disturbing and destroying the particles of the sludge, there is an advantage that can increase the dehydration efficiency by separating the water in the destroyed sludge; Second, the suction roller and the discharge roller are placed in the second dewatering part, and the drum is replaced with the high pressure vacuum roller in the third dewatering part (high pressure dewatering part), which has the advantage of significantly lowering the water content of the final sludge cake. The purpose of the present invention is to provide a vacuum high pressure dehydrator with a high vacuum dehydration efficiency, which reduces the vacuum pump operation time and reduces the loss of electrical energy.

1 is a block diagram of a vacuum high pressure dehydrator to increase the dehydration efficiency according to the present invention.

Figure 2 is a perspective view of the first dewatering vacuum suction dehydration roller of the high pressure vacuum dehydrator according to the present invention.

Figure 3 is a side cross-sectional view of the first dehydration unit vacuum suction dehydration roller of the vacuum high pressure dehydrator according to the present invention.

4 is a cross-sectional view illustrating a second dewatering part suction roller and a discharge roller of a vacuum high pressure dehydrator according to the present invention;

Figure 5 is a cross-sectional view illustrating a third dewatering unit high pressure vacuum roller of the vacuum high pressure dehydrator in accordance with the present invention.

※ Explanation of symbols used in the main part of the drawing ※

10: self-gravity unit 20: first dewatering unit

21: microwave generator 24: vacuum suction dehydration roller

26, 41a, 42a, 59: valve 40: second dewatering part

41: suction roller 42: discharge roller

50: third dewatering part 51: high pressure vacuum roller

53: pressure roller

The configuration of the present invention for achieving the above object is to remove the water in the sludge generated by the purification process of wastewater generated in sewage treatment plants or industrial sites, etc. in the self-gravity portion 10, the water in the sludge removed from the self-gravity gravity portion The second dewatering unit by vacuum suction in the first dewatering unit to remove the water in the sludge conveyed from the first dewatering unit, and the third dewatering unit (high pressure) to finally remove the water in the sludge. In the vacuum dehydrator consisting of a dehydration unit),

In the first dehydration unit 20 for removing water in the sludge from which the water is first removed from the gravity unit 10, the microwave generator 23, which is irradiated with microwaves to disturb and destroy particles of the sludge, is vacuum suction dewatering roller. It includes a microwave generating device 21 is installed on the frame 22 formed to cover the 24, at equal intervals vertically and horizontally, the outer peripheral surface of the portion through which the filter cloth passes through the groove 25 and the projections. 30 is repeatedly formed in the concave-convex shape, the groove 25 is connected to one side of the connecting pipe 28 is connected to the vacuum tube 27 takes the vacuum by the vacuum pump, the connection pipe 28 is connected A valve 26 is installed on the opposite side to be connected to the groove 25 so that a vacuum is generated in the groove 25 by pressing the push button 29 pressed by the filter cloth 2 so that the water in the sludge is sucked and vacuumed. The projections 30 on the outer circumferential surface are Dehydration holes (31) are formed on the surface so that the water separated from the sludge conveyed in the filter cloth (2) is hollowed out and naturally dehydrated by its own weight, and the water separated through the dehydration holes (31) can be discharged. Discharge hole 32 is formed on both sides so that.

The second dewatering part 40 which sucks or discharges water in the sludge from which water is secondarily removed by the microwave generator 21 and the vacuum suction dewatering roller 24 of the first dewatering part 20 is suctioned. The grooves 41a and 42a are arranged in the order in which the roller 41 and the discharge roller 42 intersect, and the outer circumferential surface is a concave-convex shape in which the grooves 41a and 42a and the projections 41b and 42b are repeated repeatedly. ) Is connected to one side of the connecting pipe 41d, 42d connected to the vacuum tube 41c (42c) to be vacuumed by the vacuum pump, the other side is connected to the groove 41a (42d) connected to the connection pipe 41d (42d) ( 42a) is opened and is opened by the pressing operation of the pressing buttons 41f and 42f pressed by the filter cloth 2 to generate a vacuum in the grooves 41a and 42a to vacuum suction and separate the water in the sludge or discharge the air. Valves 41e and 42e are provided, and the projections 41b and 42b on the outer circumferential surface are hollowed out from sludge that is applied to the filter cloth and transported. Dehydration holes (41g) (42g) are formed on the surface so that the separated water can be naturally dehydrated, and discharge holes (41h) (42h) are formed on both sides so that the separated water is discharged through the dehydration hole. will be.

The third dehydration part 50 for removing the moisture in the sludge from which the water is removed from the second dewatering part 40 under high pressure is maintained by the tension roller 52 at the outer circumferential surface of the high pressure vacuum roller 51. 4th removal while passing between the rubber belt 54 and the high pressure vacuum roller 51 of several strands which are in close contact with the outer circumferential surface of the high pressure vacuum roller 51 by the pressure roller 53 having a small diameter while going toward the discharge side. The high-pressure vacuum roller 51 is a concave-convex shape in which the outer circumferential surface of the portion where the filter cloth 2 passes is concave and convex in the groove 55 and the projection 56, and the groove 55 is vacuumed by a vacuum pump. The connecting tube 58 connected to the vacuum tube 57 is connected to one side, and the opposite side to which the connecting tube 58 is connected is connected to the recess 55 so that the pressing button 60 pressed by the filter cloth 2 is pressed. The valve 59 for causing vacuum in the groove 55 to vacuum suction and separate the water in the sludge is The projections 56 on the outer circumferential surface of the outer circumferential surface are formed with dehydration holes 61 formed on the surface thereof so that the water separated from the sludge carried on the filter cloth 2 can be naturally dehydrated. Characterized in that the discharge hole 62 is formed on both sides so that the water is discharged.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a vacuum high pressure dehydrator with a high dehydration efficiency according to the present invention, Figure 2 is a perspective view of the first dewatering unit vacuum suction dehydration roller of the vacuum high pressure dehydrator according to the present invention, Figure 3 is a present invention Is a side cross-sectional view of the first vacuum suction dewatering roller of the vacuum high pressure dehydrator.

4 is a cross-sectional view illustrating a second dewatering part suction roller and a discharge roller of the vacuum high pressure dehydrator according to the present invention, and FIG. 5 is a cross-sectional view illustrating the third dewatering part high pressure vacuum roller of the vacuum high pressure dehydrator according to the present invention.

As shown, the sludge separated from the waste water in the high pressure dehydrator of the present invention is applied to the filter cloth (2) through the chute (1) to be transported.

As described above, the sludge applied and transported to the filter cloth is separated from the water contained in the sludge by the own weight while passing through the self-gravity portion 10.

The sludge from which water is first dehydrated in the gravity unit 10 is secondarily dehydrated while passing through the vacuum suction dehydration roller 24 and the microwave generator 21 of the first dehydration unit 20.

When the sludge coated on the filter cloth 2 is positioned as the first dewatering part 20 as described above, the particles of the sludge are disturbed and destroyed by the microwaves irradiated from the microwave generator 23 of the microwave generator 21. Moisture is separated from it smoothly.

As described above, the water separated from the sludge is sucked and removed by the vacuum suction dehydration roller 24 in which a vacuum is generated by a vacuum pump (not shown).

The vacuum suction dehydration roller 24 will be described as follows to absorb the water separated from the sludge.

When the filter cloth 2 passes through the outer circumferential surface of the vacuum suction dewatering roller 24, the push button of the valve 26 in which the filter cloth contacts the valve 26 installed as the groove 25 of the vacuum suction dewatering roller 24 ( 29) is pressed to open, the rest is blocked.

As described above, the valve 26 in which the push button 29 is pressed by the filter cloth 2 is in communication with the vacuum tube 27 and the connecting tube 28 which form a vacuum state by a vacuum pump (not shown). Vacuum is generated at the portion 25, and moisture contained in the sludge in the filter cloth 2 located at the recess 25 in which the vacuum is generated is sucked into the vacuum.

As described above, the valves 26 installed as the grooves 25 constituting the outer circumferential surface of the vacuum suction dewatering roller 24 are continuously operated by the filter cloth 2, so that vacuum is generated in the grooves 25 and thus the filter cloth 2. The water in the sludge applied to the suction is continuously separated.

On the other hand, in the hollow projection 30, a dehydration hole 31 is formed on the surface where the filter cloth 2 is in contact, and when the filter cloth 2 passes through the protrusion 30, the moisture in the sludge dehydrates the hole 31. Natural dehydration is introduced through the protrusion 30, and the separated water introduced into the protrusion 30 is discharged through the discharge holes 32 formed at both sides of the protrusion 30.

As described above, the sludge in the filter cloth 2 which is secondarily dewatered in the first dewatering part 20 is dewatered in the third part in the second dewatering part 40.

The second dewatering part 40 for dewatering the water in the sludge thirdly has the same configuration as the vacuum suction dewatering roller 24, and the suction roller 41 and the discharge roller 42 having different flows of compressed air are different from each other. It is arranged in the order of crossing.

When the filter cloth 2 exiting the first dewatering part 20 enters the second dewatering part 40 made as described above, the sludge is coated on the suction roller 41 of the second dewatering part 40. (2) is positioned first to allow the filter cloth (2) to press the push button (41f) of any one of the valves (41e) installed in the grooves (41a) of the suction roller (41) to open the valve (41e). do.

As described above, the valve 41e in which the valve 41e installed in the recess 41a of the suction roller 41 is opened is connected by the vacuum tube 41c and the connecting tube 41d, so that vacuum is generated by the vacuum pump. The vacuum is generated in the groove 41a by the vacuum pressure, and the moisture in the sludge applied to the filter cloth 2 positioned on the groove 41a is sucked out by vacuuming the groove 41a.

As described above, when the water in the sludge is separated by the operation of the valve 41e, the water in the sludge located on the protrusion 41b is gravity-separated by the dehydration hole 41g formed on the surface of the protrusion 41b by its own weight. It is discharged | emitted by the discharge hole 41h formed in the both sides of the projection 41b.

As described above, when the sludge from which water is sucked and removed by the suction roller 41 is formed in the discharge roller 42 installed next to the suction roller 41, the valve installed as the groove 42a of the discharge roller 42 ( The push button 42f of 42e is pressed by the filter cloth 2 to open, and the vacuum valve air is discharged through the connecting pipe 42d connected to the vacuum pipe 42c to the opened valve 42a, and thus the groove 42a. Blow off the water in the sludge located in the).

At this time, the sludge is applied to the filter cloth (2) is located in the lower portion of the discharge roller 42 can remove the water.

The second dewatering part 40 is configured in a continuous order in which the suction roller 41 and the discharge roller 42 which function as described above intersect with each other, so that the above-described water separation process is repeated continuously.

As described above, the sludge from which the water is removed from the second dewatering part 40 in the third step is finally separated from the third dewatering part 50 which is the final step.

When the filter cloth 2 passes through the outer circumferential surface of the high pressure vacuum roller 51 of the third dewatering part 50, the valve that contacts the filter cloth of the valve 59 installed as the groove 55 of the high pressure vacuum roller 51 ( The pressing button 60 of 59 is pressed to open, and the rest is blocked.

As described above, the valve 59 in which the push button 60 is pressed by the filter cloth 2 is connected to the vacuum tube 57 and the connecting tube 58 which are in a vacuum state by a vacuum pump (not shown). The vacuum is generated at the 55 part, and the moisture contained in the sludge in the filter cloth 2 positioned at the recess 55 formed at the vacuum is sucked into the vacuum.

As described above, the valves 59 installed as the grooves 55 constituting the outer circumferential surface of the high pressure vacuum roller 24 are continuously operated by the filter cloth 2, so that vacuum is generated in the groove 55 so that the filter cloth 2 is applied to the filter cloth 2. The moisture in the applied sludge is continuously separated by suction.

On the other hand, the hollow projection 56 is formed with a dehydration hole 61 on the surface where the filter cloth 2 is in contact, and when the filter cloth 2 passes through the projection 56, the water in the sludge dehydrates the hole 61. Gravity-separated by its own weight is introduced into the projections 56, and the separation water introduced into the projections 56 is discharged through the discharge holes 62 formed at both sides of the projections 56. Lose.

On the other hand, the pressure is installed so that the rubber belt 54 is maintained in tension by the tension roller 52 to be pressed against the outer peripheral surface of the high pressure vacuum roller 51 is in close contact with the high pressure vacuum roller 51 At the same time being pressed by the roller 53, the pressing roller 53 has a small diameter as it goes toward the discharge port, so that the pressing force is increased by the surface pressure difference of the pressing roller 53.

As described above, the vacuum high pressure dehydrator having the improved dehydration efficiency of the present invention is a first dewatering machine in a conventional dehydrator including a gravity unit, a first dehydration unit, a second dehydration unit, and a third dehydration unit (high pressure dehydration unit). The vacuum suction dewatering roller of the first dewatering part 20 is an improvement in the structure of the roller (drum) constituting the first, second, and third dewatering parts while providing the microwave generator 21 in the part 20. A disturbance and destruction of the sludge particles by the microwave generator 21 provided on the outer circumferential surface of (24), thereby separating the water in the destroyed sludge to increase the dehydration efficiency; The suction roller 41 which sucks and removes moisture to the second dehydration part 40 and the discharge roller 42 which blows and removes moisture are arranged in the order of crossing, and the third dehydration part 50 (high pressure dehydration part) By replacing the drum with the high-pressure vacuum roller 51 has the advantage that can significantly lower the water content of the final sludge cake; The vacuum area of the roller forming each dewatering part is not only can reduce the vacuum pump operating time, it is a very useful invention that can reduce the loss of electrical energy accordingly.

Claims (1)

In the vacuum dehydrator for removing the water in the sludge generated by the purification of wastewater generated in sewage treatment plants or industrial sites, A self-gravity unit 10 in which a polymer coagulant participates in the mixer and the water of the sludge applied to the filter cloth by the chute 1 is first removed by its own weight; On the frame 22 in which the microwave generator 23, which is irradiated with microwaves for finely destroying the particles of sludge from which the moisture is first removed from the self-gravity unit 10, is wrapped around the vacuum suction dehydration roller 24. Including up and down, left and right at equal intervals, including a microwave generating device 21, the outer peripheral surface of the filter cloth passing portion forms a concave-convex shape in which the groove 25 and the projection 30 is repeated repeatedly, groove ( 25 is connected to one side of the connecting pipe 28 connected to the vacuum tube 27 to be vacuumed by the vacuum pump, the opposite side to which the connecting pipe 28 is connected to the groove 25 is pressed by the filter cloth (2) The valve 26 is installed to allow vacuum to be generated in the groove 25 by the depressing operation of the depressing button 29 to separate the vacuum suction and suction of the water in the sludge. Sludge transported in Dewatering holes 31 are formed on the surface so that the water separated from the water can be naturally dehydrated, and the suction hole 32 is formed on both sides so that the separated water is discharged through the dewatering hole 31. A first dewatering part 20 formed of a dehydration roller 24; The suction roller 41 and the discharge roller 42 capable of suctioning and separating the water in the sludge from which the moisture is secondarily removed by the microwave generator 21 and the vacuum suction dewatering roller 24 of the first dewatering part are provided. The suction rollers 41 and the discharge rollers 42 are disposed in the order of crossing, and the grooves 41a have an outer circumferential surface as an uneven shape in which the grooves 41a, 42a and the projections 41b, 42b are continuously repeated. In the 42a, connecting pipes 41d and 42d connected to the vacuum tubes 41c and 42c which are vacuumed by the vacuum pump are connected to one side, and the opposite side to which the connecting pipes 41d and 42d are connected is a recess 41a. Is opened by the pressing operation of the pressing buttons 41f and 42f, which are in contact with the 42a and pressed by the filter cloth 2, to create a vacuum in the grooves 41a and 42a to vacuum-induce and separate the water in the sludge or air. Valves 41e and 42e for discharging air are provided, and the protrusions 41b and 42b on the outer circumferential surface are hollowed out and transported on a filter cloth. Dehydration holes (41g) (42g) are formed on the surface so that the water separated from the rug can be naturally dehydrated, and discharge holes (41h) (42h) are formed on both sides so that the water separated through the dehydration holes can be discharged. A second dewatering part 40; Moisture in the sludge from which the water is removed from the second dewatering part 40 is maintained by the tension roller 52 to the outer circumferential surface of the high pressure vacuum roller 51, and the pressure roller 53 having a small diameter goes toward the discharge side. By the four-way between the rubber belt 54 and the high pressure vacuum roller 51 which is in close contact with the outer circumferential surface of the high pressure vacuum roller 51 by being removed, the high pressure vacuum roller 51, the filter cloth The outer circumferential surface of the part where (2) passes is a concave-convex shape in which the concave groove 55 and the protrusion 56 are repeatedly repeated, and the concave groove 55 has a connecting pipe 58 connected to a vacuum tube 57 that is vacuumed by a vacuum pump. Connected to one side, the opposite side to which the connection pipe 58 is connected is conducted to the groove 55, the pressure of the push button 60 is pressed by the filter cloth (2) to create a vacuum in the groove 55 to draw moisture in the sludge A valve 59 for separating vacuum suction is installed, and the protrusion 56 on the outer circumferential surface is Dehydration holes 61 are formed on the surface so that the water separated from the sludge carried on the filter cloth 2 is emptied to be naturally dehydrated, and the discharge holes on both sides are discharged so that the separated water is discharged through the dewatering hole. High pressure vacuum dehydrator, the dehydration efficiency is improved, characterized in that consisting of a third dehydration unit 50 is formed 62).