KR20110136121A - Belt press roller and sludge dehydration apparatus - Google Patents

Abstract

PURPOSE: A belt press roller and a belt press dehydrating apparatus equipped with the same are provided to effectively implement a dehydrating operation by constantly compressing waste sludge between an upper belt and a lower belt. CONSTITUTION: A belt press dehydrating apparatus equipped with a belt press roller includes a main body(110), a lower belt(120), an upper belt(130), and lower and upper press rollers(160, 170). The lower belt is installed at the main body to caterpillary rotate. The upper belt is installed at the main body, and a part of the upper belt is engaged with the lower belt. The belt press rollers guide the movement of the lower belt and the upper belt in order to dehydrate waste sludge which is supplied into a space between the lower belt and the upper belt. Gaps between the belt press rollers are successively narrowed to the operating direction of the lower belt and the upper belt.

Description

Belt press roller and belt press dewatering apparatus having the same {BELT PRESS ROLLER AND SLUDGE DEHYDRATION APPARATUS}

The present invention relates to a belt press roller applied to a dewatering apparatus for treating sludge generated in purified water, sewage and manure treatment plants or wastewater treatment plants, and a belt press dewatering apparatus having the same.

In general, household sewage or industrial wastewater generated by various industries should be collected to a treatment plant to purify and discharge various pollutants contained in this wastewater / wastewater. In the treatment of such wastewater, the sludge that is recycled or discharged and the remaining sludge remains as a residue is difficult to treat due to the high moisture content, and the weight is high and the cost of treatment is increased. Efforts are needed to reduce the throughput by dehydrating and drying.

Therefore, various dehydration apparatuses for dewatering and treating sludge generated in the process of purifying pollutants have been developed and applied.

Among them, there is a press dewatering device using a belt. In this case, the upper and lower belts are driven to run each other in an endless track, and the upper and lower belts are driven on a driving path where the upper and lower belts contact each other. The sludge is squeezed in between to squeeze out the water, and then the sludge remaining in the upper and lower belts is removed and treated.

By the way, as described above, the upper and lower belts are provided with a press roller for pressing while guiding to run in contact with each other, when passing through the press roller, water that is compressed and removed flows toward both ends of the press roller to contaminate the surroundings. There is a problem such as to make, and when passing through a plurality of press rollers, there is a problem such that the pressing effect is gradually reduced. Therefore, even if all of the plurality of press rollers, there is a problem such as not sufficiently remove the water of the sludge on the upper and lower belts.

The present invention has been made in view of the above, and provides a belt press roller having an improved structure and a belt press dewatering apparatus having the same to effectively transport and compress a belt for filtering waste sludge. There is this.

The belt press roller of the present invention for achieving the above object, the lower and upper belts which are installed to run in contact with each other in a predetermined section in the lower and upper portions respectively to the waste sludge interposed between each of the lower and upper belts. A belt press roller for squeezing water contained therein, comprising: a roller body; And a coating layer formed on the outer circumference of the roller body.

The coating layer is formed in the central portion of the roller body with a predetermined thickness and the center portion for pressing the waste sludge between the lower and upper belt; It is formed on each of both ends of the roller body is formed thicker than the center portion to guide and support both edges of the lower and upper belts, so as to block the water squeezed from the central portion flowing toward both ends of the roller body Formed belt support; characterized in that it comprises a.

Here, the coating layer, preferably formed between the central portion and the belt support portion, it is preferable to further include an inclined portion formed to be inclined so as to gradually increase the thickness of the belt support portion at the central portion.

In addition, the belt press dewatering apparatus of the present invention for achieving the above object, the apparatus main body; A lower belt installed to drive the caterpillar in the main body of the device; An upper belt installed on the main body of the apparatus so as to travel in engagement with the lower belt for a predetermined period; A plurality of lower and upper belt press rollers for guiding movement while pressing each of the lower belt and the upper belt to face each other in order to squeeze water contained in the waste sludge supplied to be distributed between the lower belt and the upper belt. The interval between each of the plurality of lower and upper belt press rollers may be arranged to be gradually narrowed along the conveying direction of the lower and upper belts.

Here, each of the upper and lower belt press roller, it is preferable that the diameter is formed stepwise small along the conveying direction of the lower and upper belt.

In addition, the plurality of upper belt press rollers, each of the center of rotation thereof is located at the same height, the diameter thereof is preferably smaller in diameter along the conveying direction of the lower belt.

In addition, the plurality of upper belt press rollers are disposed such that their respective rotation centers are gradually lowered along the conveying direction of the upper belt, and the outer diameters thereof may be gradually smaller.

In addition, each of the lower and upper belt press rollers has a roller body and a coating layer formed on the outer circumferential surface of the roller body, wherein the coating layer is formed in a central portion of the roller body to have a predetermined thickness and the lower and upper belts. A central portion for compressing the waste sludge therebetween; It is formed on each of both ends of the roller body is formed thicker than the central portion to guide and support both edges of the lower and upper belts, so as to block the water squeezed from the central portion flows toward both ends of the roller body It is preferable to have a belt support formed.

According to the belt press roller and the belt press dewatering apparatus of the present invention, press rollers for pressing the lower belt and the upper belt for filtering the waste sludge are arranged in the belt conveying direction in each of the upper and lower portions, and the waste is reduced by narrowing the distance between the upper and lower press rollers. Even if the water contained in the sludge is squeezed out and the volume is reduced, the pressure to pressurize the waste sludge between the lower and upper belts does not decrease so that the pressure is continuously compressed to effectively proceed with dehydration.

In addition, by forming a coating layer on the outer periphery of the belt press roller, by forming both ends thicker than the center portion to support both edges of the belt, both edges of the belt can be moved in a close contact with the support roller. . Therefore, the belt can be transported stably without slipping, and the waste sludge can be prevented from flowing out toward the edges of the lower and upper belts.

Further, by providing a belt support having a thicker coating layer on both ends of the roller, the waste sludge is squeezed out from the center of the roller to prevent water from squeezing out of the roller and flowing out toward both ends of the roller. It is possible to prevent the parts and the like on both ends from being damaged and contaminated.

1 is a schematic view showing a belt press dewatering apparatus according to an embodiment of the present invention.
2 and 3 are views showing an extract of the lower and upper press roller shown in FIG.

Hereinafter, a belt press roller and a belt press dewatering apparatus including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the belt press dewatering device 100 according to an embodiment of the present invention, the device body 110, and the lower belt 120 is installed so as to travel in the orbit in the device main body 110 And, the upper belt 130 is installed to run in the device body 110 so as to travel in contact with the lower belt 120 for a certain section, and guides the driving of each of the lower and upper belts (120,130) A plurality of lower and belt press rollers which are installed in a predetermined section in which the lower and upper guide parts 140 and 150 and the lower and upper belts 120 and 130 are in contact with each other, and compress and support the lower and upper belts 120 and 130, respectively. 160,170.

The device body 110 includes a plurality of horizontal frames 111, 113, and 115 and vertical frames 117, 119.

The lower belt 120 and the upper belt 130 are installed to travel in contact with each other for a predetermined period. That is, as shown in Figure 1, the lower belt 120 travels in a clockwise direction, the upper belt 130 is installed to run in a counterclockwise direction. Each of the lower and upper belts 120 and 130 may be formed of a non-woven material that can filter waste sludge and allow water to pass therethrough.

The lower belt 120 and the upper belt 130 is driven while maintaining a constant tension, the lower and upper tension control unit (210, 220) for adjusting the tension of the lower belt 120 and the upper belt 130 is a device The main body 110 is installed.

Each of the lower and upper tension control units 210 and 220 includes tension control rollers 211 and 221, movable blocks 213 and 223 for supporting the tension control rollers 211 and 221, and movable parts 215 and 225 for positioning the movable blocks 213 and 223. Each of them is provided. The movable blocks 213.223 are installed on the horizontal frames 111 and 113 so as to be movable left and right, and are moved left and right by driving of the movable parts 215 and 225, respectively, such that the lower belt 120 and the upper belt are moved. The tension of the 130 can be adjusted.

Each of the movable parts 215 and 225 is installed in the horizontal frames 111 and 113 and is driven by a driving motor not shown, and the movable blocks 213 and 223 are geared to the drive gears. Rack gear portion provided in the) may be provided.

Here, as illustrated by illustrating an example of the tension control unit 210, 220 of the above configuration, it is obvious that the tension control unit of various configurations can be applied.

The lower guide part 140 includes a plurality of guide rollers 141, 142, 143, and 144 installed on the apparatus body 110 to support the lower belt 120 to be capable of traveling.

The upper guide part 150 also includes a plurality of guide rollers 151 and 152 which are installed on the apparatus main body 110 to support the upper belt 130 to be driven.

In addition, at the point where the lower belt 120 and the upper belt 130 each run while facing each other, the blade 181 for removing the sludge from which water is removed from each of the lower and upper belts 120 and 130 is removed. 183 are respectively installed to remove the sludge, that is, dried or caked sludge from the lower and upper belts 120 and 130, respectively.

The plurality of lower belt press rollers 160 and the plurality of upper belt press rollers 170 are installed to be spaced apart from each other along the traveling direction of the lower and upper belts 120 and 130 to lower and upper belts 120. Pressurize 130.

Here, the plurality of lower belt press rollers 160 are arranged at regular intervals at the same height, and each outer diameter has a different outer diameter so that the outer diameter gradually decreases along the driving direction of the belts 120 and 130. That is, the rollers are arranged at regular intervals along the running direction of the belts 120 and 130 in order from rollers having a large outer diameter to small rollers.

In addition, the plurality of upper belt press rollers 170 are positioned at alternating positions with the lower belt press rollers 160 to compress and guide the belts 120 and 130, thereby providing belts 120 and 130. The water contained in the waste sludge can be effectively squeezed out.

Also preferably, the lower belt press rollers 160 are disposed such that their respective rotation centers are positioned at the same height, and the upper belt press rollers 170 have their rotation centers based on the driving directions of the belts 120 and 130. It is arranged so as to gradually approach the lower belt press roller 160. By arranging the lower and upper belt press rollers 160 and 170 in this manner, the water is squeezed out while being squeezed out while the waste sludge is moved between the belts 120 and 130. By effectively supporting and transporting the belts 120 and 130, as well as reducing the compressive force for compressing the belts 120 and 130, the belts 120 and 130 can be effectively compressed to remove moisture. Will be.

Therefore, since the waste sludge in the first wet state occupies a large volume, it is compressed by press rollers 160 and 170 having a large diameter at the inlet portion where the lower and upper belts 120 and 130 are engaged. The waste sludge is gradually narrowed and the volume of waste sludge is narrowed, and the diameter of the waste sludge is squeezed continuously by the press rollers 160 and 170 that are reduced in diameter to effectively drain the waste sludge. It can be removed.

In addition, more preferably, the lower and upper belt press rollers 160 and 170 have coating layers 163 and 173 coated with a predetermined thickness on the outer circumference of the roller bodies 161 and 171 as shown in FIGS. 2 and 3. Preferably, the coating layers 163 and 173 have central portions 163a and 173a coached to a predetermined thickness on the outer circumference of the roller bodies 161 and 171, and belt support portions 163c and 173c formed thicker at both ends thereof. It is good. Inclined portions 163b and 173b that are inclined to a predetermined width are formed between the belt supports 163c and 173c and the central portions 163a and 173a.

By forming the coating layers 163 and 173 on the outer circumference of each of the lower and upper belt press rollers 160 and 170 as described above, by forming the belt support portions 163b and 173b so that the thickness of the coating layers 163 and 173 is thicker at both ends, In the belt support parts 163b and 173b, the belts 120 and 130 may be effectively contacted and driven, and the waste sludge 200 may be compressed in a collected state between the belt support parts 163b and 173b at both ends. Will be. In addition, the water squeezed out from the central portions 163a and 173a of the coating layers 163 and 173 is blocked by the inclined portions 163b and 173b and blocked from flowing toward both ends of the rollers 160 and 170, and the roller 160 is blocked. By being squeezed downward from the central portion of the 170, water is spilled toward both ends of the rollers 160 and 170, thereby adversely affecting parts such as bearings that support the rollers 160 and 170. It can minimize the giving. The coating layers 163 and 173 may be formed of a resin material or the like.

In addition, as described above, each of the rollers 160 and 170 has been described as being gradually reduced in the outer diameter along the driving direction of the belts 120 and 130. Preferably, the coating layers 163 and 173 It is preferable that the thicknesses of the belt support parts 163c and 173c become thinner toward the traveling direction of the belts 120 and 130. That is, the outer diameters of the roller bodies 161 and 171 are constant, but the thickness of the coating layers 163 and 173, that is, the thickness of the belt support parts 163c and 173c is differently formed for each of the rollers 160 and 170, thereby making the belts 120 and 130 different. Even if the volume is reduced according to the degree of compression of the waste sludge between the belts 120 and 130 along the driving direction of), by applying a constant pressure in a state in which the gap between the belts 120 and 130 is also reduced. In addition, waste sludge can be effectively squeezed to remove moisture.

That is, in FIG. 1, the waste sludge interposed between the lower and upper belts 120 and 130 is compressed by the belts 120 and 130 by the rollers 160 and 170 so that the volume is reduced while water is removed. The volume decreases toward the right side in the drawing of FIG. 1. As such, even if the volume of the waste sludge is reduced, the outer diameters of the rollers 160 and 170 are reduced, and the gap is gradually narrowed, so that the pressure applied to the waste sludge does not decrease, and thus the belt 120 is reduced. The friction force between the 130 and the rollers 160 and 170 is also maintained without being reduced and can be transported while being stably pressed.

And the water coming from the waste sludge being compressed while moving in the state interposed in the lower belt 120 and the upper belt 130 as described above through a plurality of water recovery unit 117 is installed in the lower portion of the device body 110 It can be recovered and removed to the outside.

In addition, the belts 120 and 130 passing through the lower and upper belt press rollers 160 and 170 pass through the large-diameter press rollers 191 and then contact rollers 193 which are installed to rotate in contact with each other. After passing through the final compression and finally separated to allow the sludge dewatered by the respective blades (181, 183) can be separated from the belt (120, 130).

Here, the contact rollers 193 may be a heating roller. Therefore, the sludge may be caked by heating and evaporating a little of the remaining water by heating the waste sludge which is almost dehydrated.

The operation and effect of the belt press dewatering apparatus 100 according to the embodiment of the present invention having the above configuration will be described in detail.

First, the lower and upper belts 120 and 130 are driven in a caterpillar in the same direction by the driving of a driving motor not shown.

In this state, the waste sludge is distributed and supplied to the inlet side of the lower and upper belts 120 and 130 just before engaging with each other through a supply unit not shown. Preferably it is supplied to be distributed in a constant thickness on the outside of the lower belt (120).

The waste sludge distributed on the lower belt 120 is pressed by the pressing force of each of the lower and upper press rollers 160 and 170 while being moved together in an overlapping state with the upper belt 130. The contained water is squeezed out and falls to the bottom. The water falling to the bottom is collected and treated by the water recovery unit 117.

In this case, as described above, the diameters of the lower and upper belt press rollers 160 and 170 are gradually reduced, and the gap between the lower and upper belt press rollers 160 and 170 is gradually narrowed. As a result, the squeezed water can be transported while maintaining a constant pressure without reducing the compressive force for compressing (pressing) the waste sludge. Accordingly, the water can be squeezed more effectively, and the belt supports 163c and 173c having thicker thicknesses are formed at both ends of the rollers 160 and 170 so that the squeezed water can be squeezed into the rollers 160 and 170. It is possible to prevent damage to bearings or other driving portions of both ends of the rollers 160 and 170 by the water by allowing the water to be recovered by falling to the water recovery part 117, that is, the lower part, without flowing over to both ends of the water. Will be.

Then, the dehydrated sludge remaining in the water-removed state between the lower and upper belts 120 and 130 can be removed from the belts 120 and 130 by the blades 181 and 183 to be treated. do.

As described above, according to the belt press dewatering apparatus 100 according to the embodiment of the present invention, while pressing the belt 120, 130 for effectively removing the water contained in the waste sludge can be compressed to remove the water In addition, even if the volume of waste sludge decreases as the water is drained, it is possible to effectively remove the water by not reducing the compressive force.

In addition, the water removed while being compressed by the pressure rollers 160 and 170 does not overflow toward both ends of the press rollers 160 and 170, and is recovered directly underneath, thereby deteriorating or deteriorating the state of parts and the like of the apparatus by the water. It becomes possible to prevent it.

While the invention has been shown and described in connection with preferred embodiments for illustrating the principles of the invention, the invention is not limited to the construction and operation as shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

Belt press dewatering device 110.
120. Lower belt 130. Upper belt
140. Lower guide section 150. Upper guide section
160..Lower Belt Press Roller 170..Lower Belt Press Roller
181,183..blade

Claims (7)

A device body;
A lower belt installed to drive the caterpillar in the main body of the device;
An upper belt installed on the main body of the apparatus so as to travel in engagement with the lower belt for a predetermined period;
A plurality of lower and upper belt press rollers for guiding movement while pressing each of the lower belt and the upper belt to face each other in order to squeeze water contained in the waste sludge supplied to be distributed between the lower belt and the upper belt. ,
And a distance between each of the plurality of lower and upper belt press rollers is gradually narrowed along the conveying direction of the lower and upper belts. The method of claim 1, wherein each of the upper and lower belt press rollers,
Belt press dewatering apparatus characterized in that the diameter is formed step by step along the conveyance direction of the lower and upper belt. The method of claim 1, wherein the plurality of upper belt press roller,
Each center of rotation is located at the same height, the diameter of the belt press dewatering device characterized in that the diameter is reduced along the conveying direction of the lower belt. The method of claim 3, wherein the plurality of upper belt press roller,
A belt press dewatering device, characterized in that the center of rotation thereof is gradually lowered along the conveying direction of the upper belt, and the outer diameter thereof is gradually smaller. According to any one of claims 1 to 4, wherein the lower and upper belt press roller,
It has a roller body and a coating layer formed on the outer peripheral surface of the roller body,
The coating layer,
A central portion formed at a constant thickness in the central portion of the roller body to compress waste sludge between the lower and upper belts;
It is formed on each of both ends of the roller body is formed thicker than the central portion to guide and support both edges of the lower and upper belts, so as to block the water squeezed from the central portion flowing toward both ends of the roller body Belt press dewatering device characterized in that it has a formed belt support. In the belt press roller for squeezing the water contained in the waste sludge interposed between each of the lower and upper belts by pressing the lower and upper belts installed to be in contact with each other in a predetermined section, respectively,
A roller body;
And a coating layer formed on the outer circumference of the roller body.
The coating layer,
A central portion formed at a constant thickness in the central portion of the roller body to compress waste sludge between the lower and upper belts;
It is formed on each of both ends of the roller body is formed thicker than the center portion to guide and support both edges of the lower and upper belts, so as to block the water squeezed from the central portion flowing toward both ends of the roller body A belt press roller comprising a formed belt support. The method of claim 6, wherein the coating layer,
And an inclined portion formed between the center portion and the belt support portion, the inclined portion being inclined so that the thickness of the belt support portion is gradually increased at the center portion.

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