KR100776339B1 - Dehydration equipment of cake type sludge - Google Patents

Abstract

An apparatus for dehydrating sludge cake is provided to reduce the water content of the sludge, by re-hydrating moisture included in the dehydrated sludge, and to improve a hydrating rate by applying an ununiform pressure using non-porous rollers. An upper dehydration felt(1) and a lower dehydration felt(2) are respectively wound on transfer rollers, wherein the upper dehydration felt and the lower dehydration felt are rotated in an endless track while closely adhering to each other. A crushing unit(10) is installed above the lower dehydration felt to crush sludge cake. A sludge planarization unit(20) is installed at one side of the crushing unit to uniformly spread the sludge on an upper surface of the lower dehydration felt. A press-dehydrating unit(30) has a plurality of pressing rollers(31). The upper dehydration felt and the lower dehydration felt are wound on the pressing rollers. A squeeze-dehydrating unit(40) has a plurality of squeezing rollers(41,42), wherein the squeezing rollers are installed within the endless track of the upper dehydration felt and the lower dehydration felt in a zigzag type such that the squeezing rollers squeeze the upper dehydration felt and the lower dehydration felt. Upper squeeze-dehydration felt(41a) and lower squeeze-dehydration felt(41b) are respectively wound on the squeezing rollers.

Description

Dewatering device of sludge cake {DEHYDRATION EQUIPMENT OF CAKE TYPE SLUDGE}

1 is a block diagram showing the overall configuration of the dewatering device of the sludge cake of the present invention.

Fig. 2 is a plan view showing the structure of a crushing part and a flattening part which are essential components of the dewatering device of the sludge cake of the present invention.

Figure 3 is a block diagram showing a process of dewatering the water of the sludge by the main portion of the dewatering device of the sludge cake of the present invention.

Figure 4 is a partially omitted perspective view showing the configuration of the pressing roller which is one of the components of the dewatering device of the sludge cake of the present invention.

5 is a partially omitted perspective view showing another embodiment of the dewatering device of the present invention sludge cake.

<Description of the symbols for the main parts of the drawings>

1: Upper dewatering bolt 2: Lower dewatering bolt

1a, 2a: feed roller 10: crushing part

11: inlet 12: crimp feeder roller

20: flattening portion 21: flat roller

30: pressurized dewatering part 31: pressurized perforated roller

32: pressurized airless roller 40: compression dewatering part

41, 42: pressing roller 41a: upper pressing bolt

42a: Lower compression bolt 41b: Non-roller roller

42b: non-rolling roller 43: support shaft

44: pressurizing table 45: hinge portion

46: crimping cylinder

The present invention relates to a dewatering device for reducing the water content of the sludge by re-dehydrating the water contained in the primary dewatered sludge, and in particular, the crushed portion and the crushed sludge cake to crush the primary dewatered sludge cake The sludge cake further comprises a flat portion, and a pressurized roller configured to pressurize the sludge cake and stably set the shape of the cake and a pressurized portion composed of a non-roller and a pressurized dewatered portion non-pressurized roller to pressurize and dewater the sludge. The dewatering apparatus of the sludge cake which can greatly reduce water content below the environmental regulation value.

In general, sludge builds up on the floor of a facility that has fresh water, such as a dam or a water purification plant, and the sludge is dewatered periodically to remove the sludge. The dewatering belt is wound around the outer surface of the pressure roller disposed in the furnace, and the water contained in the sludge is dehydrated by pressing the dewatering belt rotated by the driving of the pressure roller.

In the conventional dehydration device, while supplying and storing various sludges to a fixed-quantity supply station, the filtrate is drained and the precipitated sludge is put into a stirring tank, stirred together with a polymer flocculant to form a suitable state for dehydration, and then transported sludge. It is composed of a structure that removes water contained in sludge primarily by its own gravity and also removes water contained in sludge conveyed through the pressing force of the dewatering belt wound around a plurality of pressure rollers. Water extracted during the pressurization process is not completely dehydrated from the sludge, but is absorbed into the sludge again, thereby degrading a dehydration effect.

Meanwhile, according to the felt-type sludge dewatering apparatus, which is conventionally registered in Korean Patent No. 586053, the press roller, which is a means for dehydrating water contained in the sludge by pressurizing the sludge to be conveyed, is configured in a zigzag shape to the pressing roller. The pressure of the dewatering belt which is wound up and pressurizes the sludge is improved to increase the pressurization effect of the sludge, and at the same time, a plurality of holes are drilled on the outer surface of the pressing roller, and the water of the sludge released by the dewatering belt is pressed into the hole. Through this, it is possible to escape to the inner surface side of the pressing roller to improve the dehydration rate of the water contained in the sludge.

However, the water repelled to the hole side through the pressing roller is released from the outer surface side of the pressing roller through the hole and the reverse phenomenon is absorbed by the dewatering belt wound on the outside of the pressing roller, the dehydration rate of the water contained in the sludge There is a problem that can not fall below this environmental regulation.

In addition, since the sludge is formed in the shape of a cake, in the case of the conventional sludge dewatering apparatus, the sludge formed in the shape of the cake is transported and dehydrated by being seated on the conveying belt as it is, whereby the dehydration rate of water contained in the sludge is reduced. There is a problem.

That is, when the sludge agglomerated into a cake shape is placed on the upper side of the conveying belt, the sludge is conveyed to the pressing roller side by rotating the conveying belt, and the water is dehydrated by the dewatering belt wound on the pressing roller. Since the compressive force of the dewatering belt generated during the process of the sludge being compressed by the dewatering belt is not evenly distributed in the sludge, the compressive force against the sludge is greatly reduced, so that the dehydration rate of water contained in the sludge is lowered.

The present invention has been made in order to solve the problems of the conventional sludge dewatering device, a crushing portion having a hopper roller and the crushing roller inside the hopper and the crushing sludge conveyed sludge conveyed belt The flattening part is spread evenly on the upper part of the sludge cake, which is transferred to the pressurized dehydration part in the state where the sludge cake is evenly spread on the upper surface of the conveying belt, so that dehydration and cake shape are stabilized at the same time, and the dewatering hole is perforated on the outer surface. In the pressurizing section consisting of a non-dehydrating hole, the pressurizing section of the sludge pressurized by the pressurized dewatering unit is greatly increased by being conveyed to the pressurized dehydration unit after the first press, and the press roller constituting the pressurized dewatering unit is zigzag-shaped. But the pressing roller, the dehydration hole does not pass through the outside To provide a dewatering device for dewatering the sludge cake in the rate of moisture contained in the sludge is composed of a roller so that the significant improvements it is an object.

The dewatering device of the sludge cake of the present invention as a means for achieving the above object, is wound around a plurality of feed rollers are rotated, but each of which is provided on the upper and lower sides so that the rotation direction is opposite to each other in the form of an orbital shape rotated in close contact with each other / A lower dewatering belt; A crushing unit provided at one upper end of the lower dewatering belt and having two hopper feeder rollers in close contact with each other at a lower side of the inlet to crush the sludge cake into which the sludge cake is introduced; A sludge flattening unit provided on one side of the crushing unit and having a flat roller which is crushed by the crushing roller of the crushing unit and dropped and transported to the lower dewatering belt on the upper surface of the lower dewatering belt; A pressurized dewatering unit having a lower dewatering belt to which sludge spread evenly by the flattening unit and a plurality of press rollers for winding and transporting the upper and lower dewatering belts so that the upper dewatering belts are pressed against each other; The upper and lower dewatering belts are provided in the endless track of the upper and lower dewatering belts and are provided in a zigzag shape and formed of felt to respectively compress the upper and lower portions of the upper and lower dewatering belts pressed by the pressure dewatering unit. It is characterized in that the compression dewatering portion having a plurality of rollers wound up is included.

The plurality of compression rollers configured in the compression dewatering part may be configured as a non-porous roller that does not allow the dehydration hole to pass through the outer surface.

In addition, the pressing dewatering portion, the upper and lower compression dewatering belt wound on the pressing roller formed by felt up and down, and provided with a pressing table on the upper side of the support shaft of the pressing roller wound on the upper pressing dewatering belt, but one side of the pressing table The hinge is coupled by the hinge and the other side is connected to the rod of the pressure cylinder may be configured to press the support shaft of the upper compression dewatering belt by pressing the pressure cylinder to press the upper / lower compression dewatering belt to each other.

Dewatering apparatus of the sludge cake of the present invention having the above characteristics, the sludge cake formed in the cake (cake) shape by the crushing unit, and then pressurized dewatering unit by spreading evenly on the upper end of the lower dewatering belt by the flattening unit And the compressive force of the compressed dewatering part can be evenly distributed throughout the sludge, so that the pressing force and the compressive force are improved, so that the dehydration rate of the water contained in the sludge is greatly increased, and the non-rolling roller is not punched out in the zigzag shape. The dehydration rate is improved by dehydration at a uniform pressure throughout the cake without dehydration non-uniformity caused by the pressure difference between the dehydration hole and non-perforation of the perforated rollers, so that the moisture content can be obtained according to environmental regulations.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings, and the terminology or words used in the specification and claims are used to explain the invention in its best way. Based on the principle that the concept of can be properly defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Figure 1 is a block diagram showing the overall configuration of the dewatering device of the sludge cake of the present invention, Figure 2 is a plan view showing the configuration of the crushed portion and the flattening portion, which is a constituent of the dewatering device of the sludge cake of the present invention, Figure 3 is a sludge of the present invention 4 is a schematic view showing the process of dewatering the water of the sludge by the components of the dewatering device of the cake, Figure 4 is a partial schematic perspective view showing the configuration of the pressing roller which is one of the components of the dewatering device of the sludge cake of the present invention.

As shown, the dewatering device of the sludge cake of the present invention is wound around a plurality of feed rollers (1a) (2a) is rotated, but each of which is provided in the upper and lower sides so that the rotation direction is opposite to each other in close contact with each other rotated in shape The upper and lower dewatering belt (1) (2), the hopper-shaped inlet 11 and the sludge cake introduced into the inlet 11, the sludge cake is provided at the upper end of one side of the lower dewatering belt (2) A crushing unit 10 having two pressing feeder rollers 12 in close contact with each other at the lower side of the inlet, and provided at one side of the crushing unit 10 by a crushing drum 13 of the crushing unit 10. The sludge flattening unit 20 and the flattening unit 20 having a flat roller 21 which evenly spreads the sludge dropped and transported to the upper side to the lower dewatering belt 2 after being crushed. 20) the sludge spread evenly by The lower dewatering belt (2) and the upper dewatering belt (1) has a plurality of pressure rollers (31, 32) for winding and transporting the upper and lower dewatering belt (1) (2) so as to be in close contact with each other The upper and lower dewatering belts (1) and (2) of the upper and lower dewatering belts (1) and (2) are provided inside the endless track of the upper and lower dewatering belts (1) and (2). Compressed and dewatered portion 40 provided with a plurality of pressing rollers 41 and 42, each of which is provided in a zigzag shape and formed of felt, in which the upper and lower portions are zigzag-shaped, and each of the upper and lower compression dewatering bolts 41a and 42a are wound. It is composed.

The upper and lower dewatering bolts (1) (2) and the compression dewatering bolts (41a) (42a) are continuously infinite by the feed rollers (1a) (2a) and the pressing rollers (41) (42) respectively wound thereon. By orbital movement, the dewatering operation of the water contained in the sludge is automatically performed by the operation of injecting the sludge cake into the inlet 11 of the crushing unit 10.

In addition, the plurality of pressing rollers 41 and 42 configured in the pressing dewatering part 40 are constituted by non-rolling rollers 41b and 42b in which dehydration holes do not pass through the outer surface, as shown in FIG. 4. The non-rolling rollers 41b and 42b of the pressurized dewatering part 40 eliminate the reduction of the dehydration effect due to the difference between the compression of the punched and non-punched parts with dewatering holes by the uniform pressing force of the non-rolling rollers, thereby improving the water dehydration effect. Greatly increased.

Referring to the operation process of the dewatering device of the sludge cake of the present invention, when the sludge cake is introduced into the inlet 11 formed in the hopper shape of the crushing unit 10, the compression feeder roller provided on the lower side of the inlet 11 ( As the cake is compressed by being rotated by 12, the cake is crushed by the crushing drum 13 of the crushing portion 10, and the upper side of the lower dewatering belt 2, which is configured and rotated on the lower side of the crushing portion 10, is rotated. It is seated.

As such, the crushed sludge seated on the upper side of the lower dewatering belt 2 is transferred to the flattening part 20 provided on one side of the crushing part 10. At this time, the flattening roller of the flattening part 20 The sludge is spread to both the left and right sides by the 21 so that the sludge is spread evenly over the entire upper side of the lower dewatering belt 2.

The reason that the sludge is evenly flattened by the flattening part 20 is as shown in FIG. 2. As shown in FIG. 2, the shape of the flat rollers 21 formed in the flattening part 20 spreads from the inner side to the outer side. This is because the sludge to be conveyed as it is formed in the center side, that is, evenly spread from the center of the upper surface of the lower dewatering belt 2 to both sides of the upper surface.

The sludge spread evenly on the upper surface of the lower dewatering belt 2 is transferred to the upper dewatering belt 1 in close contact with the lower dewatering belt 2, and is thus pressurized by the pressurized dewatering part 30 to be primarily. When the phosphorus dehydration is made, the upper and lower dewatering belts (1) and (2) are simultaneously wound and rotated by the pressure roller (31) formed in the pressure dewatering unit (30), and the sludge is the upper and lower dewatering belts ( 1) (2) by being pressed between the press, while the upper / lower dewatering belt (1) (2) is rotated along the pressure roller 31 to perform the primary dewatering operation.

As described above, the sludge which is subjected to the primary dewatering operation by the pressurized dehydration unit 30 is again dehydrated by the pressurized dewatering unit 40 by the second dehydration operation. The upper and lower dewatering belts (1) and (2), which are in close contact with each other, are wound on the pressing rollers (41) and (42) of the pressing dewatering part (40), respectively, as shown in FIG. The pressing and dewatering belts 41a and 42a are drawn in and conveyed, and the pressing and dewatering belts 41a and 42a are compressed by the pressing rollers 41 and 42 formed in a zigzag shape. The dewatering operation of the sludge located between the dewatering belts (1) and (2) is secondary.

The crimping and dewatering part 40 is provided with upper and lower crimping and dewatering belts 41a and 42a, which are wound around the crimping rollers 41 and 42 and formed of felt, and are seated on the upper crimping and dewatering belt 41a. It is provided with a pressing table 44 on the upper support shaft 43 of the pressing roller 41 and one side of the pressing table 44 is hinged by the hinge portion 45 and the other side of the rod of the pressure cylinder 46 The support shaft 43 of the upper pressing dewatering belt 41 is pressed by the pressing cylinder 46 to press the upper / lower pressing dewatering belts 41 and 42 to press the sludge to each other. The upper and lower dewatering belt (1) (2) placed in the compression is made and the dehydration operation is in progress.

In addition, since the pressing rollers 41 and 42 constituting the pressing dewatering part 40 are constituted by non-rolling rollers 41b and 42b in which dehydration holes are not perforated on the outer surface, as shown in FIG. Uniform pressing force can be applied, so that the dewatering effect of the water of the sludge compressed by the pressing rollers 41 and 42 of the pressing dewatering unit 40 is absorbed by the pressing dewatering bolts 41a and 42a is greatly increased. .

That is, in the case of the perforated rollers configured in the conventional dewatering device, since only the perforated rollers are configured, when the water is re-introduced through the dewatering hole and absorbed by the dewatering belt, the dewatering effect is deteriorated because the absorbed water cannot be dehydrated. The dewatering device of the sludge cake of the inventors is configured such that the perforated rollers and the non-rolled rollers have different functions, and the dehydration rate is greatly increased by dehydrating water by pressurizing the press dewatering bolt.

Installation place Existing Function Rate (%) Cake Dehydrator (%) Reduction rate (%) Date of Measurement Gumi Water Purification Plant 61 50 11 8/22 Seongnam Water Purification Plant 73 63 10 7/20 Seokseong Water Purification Plant 71 60 11 6/30 Pohang Management Team 71 58 13 5/18 Miryang Dam 74 55 16 5/18 Hoi An Water Purification Plant 81 65 16 5/18 Jain Water Purification Plant 85 74 11 7/5

Sludge Existing Function Rate (%) Sludge Dehydrator (%) Cake Dehydrator (%) Date of Measurement Zain Purification Plant (Unmun Dam) 84.8 73.9 67.6 7/5 Zain Purification Plant (Unmun Dam) 83.1 73.5 67.7 7/3 Zain Purification Plant (Unmun Dam) - 68.9 61.8 6/23

Table 1 and Table 2 show the dehydration effect obtained by the dewatering device of the sludge cake of the present invention, respectively, dewatering the first sludge dewatering device with a felt type sludge dewatering device, and then dewatering the sludge cake of the present invention Rehydration with the device can lower the moisture content below 68% as shown in Table 2 below.

7 is a perspective view showing another embodiment of the dewatering device of the sludge cake of the present invention, at least one of the pressing roller 41, 42 of the pressing roller constituting the pressing dewatering portion 40 On the outer circumferential surface, the pressing protrusion 40b which further increases the pressing force of the sludge cake is further protruded.

Therefore, the pressing force of the sludge cake pressed by the pressing dewatering part 40 can be greatly improved by the pressing projections 40b, so that the pressing force of the sludge cake is increased, and the dewatering effect is greatly improved.

As described above, the dewatering device of the sludge cake of the present invention is capable of various modifications in addition to those shown and described, so that the embodiments to be modified should be interpreted as being included in the scope of the present invention without departing from the scope of the present invention. .

According to the dewatering apparatus of the sludge cake of the present invention as described above, after the sludge cake formed in the cake (crushed) form the crushed by the crushing unit, by the flattening unit to spread evenly on the upper end of the lower dewatering belt and the pressurized dewatering unit and The pressing force of the pressurized dewatering part can be evenly distributed throughout the sludge, so that the pressing force and the pressing force are improved, so that the dehydration rate of the water contained in the sludge is greatly increased. It is expected that the dehydration rate is improved by applying a uniform pressing force to obtain a moisture content suitable for environmental regulation.

Claims (3)

Upper and lower dewatering bolts (1) and (2) of an orbital shape, each of which is wound around a plurality of feed rollers (1a) (2a) and is rotated but provided on the upper and lower sides so that rotation directions thereof are opposite to each other; Two pressing feeders which are provided at one upper end of the lower dewatering belt 2 and are in close contact with each other on the lower side of the inlet to crush the sludge cake introduced into the hopper-shaped inlet 11 into which the sludge cake is introduced and the inlet 11. A shredding portion 10 having a roller 12; The sludge which is provided at one side of the crushing unit 10 and is crushed by the crushing drum 13 of the crushing unit 10 and then dropped and transported to the upper side to the lower dewatering belt 2 is provided in the lower dewatering belt 2. A sludge flattening unit 20 having a flat roller 21 which is evenly spread on an upper surface of the sludge; The lower dewatering belt 2 to which the sludge spread evenly by the flattening part 20 is conveyed and the upper and lower dewatering belts 1 and 2 are transported so that the upper dewatering belt 1 is pressed against each other. And pressurized dewatering section 30 having a plurality of pressure rollers 31 to be; The upper and lower dewatering belts (1) (2) are provided in the end of the track, and the upper and lower dewatering belts (1) (2) pressed by the pressure dewatering unit 30 to each other to compress each other Sludge, characterized in that the compression dewatering portion 40 is provided with a plurality of compression rollers 41, 42, which are provided in a zigzag shape and formed of felt upper / lower compression dewatering belts 41a and 42a, respectively. Dehydrator of the cake. The method of claim 1, The pressurized dewatering part 40 is provided with upper and lower pressurized dewatering belts 41a and 42a, which are wound around the pressing rollers 41 and 42 and formed of bolts, respectively, It is provided with a pressing table 44 on the upper support shaft 43 of the crimping roller 41, one side of the pressing table 44 is hinged by the hinge portion 45 and the other side of the pressing cylinder 46 The support shaft 43 of the upper compression dewatering belt 41 is pressed by the pressure of the pressure cylinder 46 by being connected to the rod, so that the upper and lower compression dewatering belts 41 and 42 are compressed to each other. Dewatering apparatus of sludge cake characterized by the above-mentioned. The method of claim 1, Sludge cake, characterized in that the pressing protrusion (40b) to increase the pressing force of the sludge cake further protrudes on the outer circumferential surface of at least one of the pressing roller 41, 42 constituting the pressing dewatering portion 40 Dewatering device.

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