KR100688887B1 - Hermetic condenser with vertical reciprocating screen cleaner for dewatering sludge - Google Patents

Abstract

A sealed concentrator with a vertical reciprocation driving type screen cleaning device for performing pre-treatment of sludge is provided to improve dewatering efficiency by primarily separating solids contained in a liquid-phase waste from water before dewatering the liquid-phase waste in a dewaterer. A sealed concentrator with a vertical reciprocation driving type screen cleaning device comprises: a casing(10) in which treated water flows, and which has an outlet formed thereon to discharge filtrate obtained by separating concentrate from the treated water flown in and has an outlet formed thereon to discharge filtrate-separated concentrate; a screen(20) in which a plurality of vertical slots(203) are formed by a plurality of bars(200) vertically installed within the casing with being spaced from one another in a proper distance; a scrubber(30) which is formed within the screen and has cleaning means, wherein the cleaning means is inserted into the slots formed by the bars of the screen by forming a treated-water flowing opening in an inner peripheral surface formed by the screen; a moving means for moving the scrubber; and a discharge valve(50) for discharging concentrate formed by the moving means, wherein the treated water is concentrated while the treated water flows through the opening between the scrubber and the screen after treated water flows in the casing, and the screen slots are cleaned according to the movement of the scrubber.

Description

Hermetic concentrator with vertical reciprocating screen cleaner for carrying out the dewatering pretreatment of sludge.

1 is a cross-sectional view of a conventional thickener

2 is a perspective view of the present invention

3 is an exploded perspective view of the present invention

4 is a cross-sectional view of the present invention

5 is a plan view of the present invention

6 is a partially enlarged plan view showing an embodiment in which the screen bar of the present invention is applied to a screen of a wedge screen type.

7 is a partially enlarged plan view showing an embodiment in which the screen bar of the present invention is applied to a screen of a wedge screen type.

8 is a partially enlarged plan view showing an embodiment in which the screen bar of the present invention is applied to a round bar type screen.

9 is an enlarged perspective view of part A of the scrubber of the present invention

10 is an enlarged cross-sectional view of a portion B of the scrubber of the present invention.

11 is an enlarged plan view of a portion C of the scrubber of the present invention.

* Explanation of symbols for the main parts of the drawings

10 Casing 20 Screen

30: scrubber 40: hydraulic cylinder

104: feed solution inlet tube 105: separation filtrate discharge pipe

106: concentrated liquid discharge pipe 200: bar

203: slot 301: top plate

302: lower plate 400: discharge hole

500: substrate 501, 501: bending piece

The present invention relates to a concentrator that separates solids contained in liquid waste, and more specifically, by separating the solids contained in the liquid waste from water prior to proceeding with dehydration of the liquid waste in the dehydrator. The present invention relates to a hermetic concentrator having a vertical reciprocating screen cleaning device for performing dewatering pretreatment of sludge, which can improve dewatering efficiency.

In general, when treating liquid waste in the dehydrator, the concentration of the solid particle suspension must be prioritized to improve the efficiency of the dehydrator, and such an advanced process is performed in a thickener.

The concentrator performs a preliminary process of separating the solid particles contained in the liquid waste from the water primarily, thereby doubling the dehydration efficiency of the condenser and dewatering system to 200-300%. To play a very important role as an intermediate process equipment in the sludge dewatering treatment system.

Conventional concentrators have been applied to drive the screw and roller rotational movement as the casing is open or closed. Since the open type concentrator needs to rotate the screw using the power of the motor rotating at a high speed, there is a problem in that the manufacturing cost increases due to a relatively low priced low speed reducer, and as the open type structure makes odor collection and automatic There was a weakness in the cleaning function.

In order to facilitate the collection of odor, the condenser of the closed structure also needs to rotate the screw using the power of the motor which rotates at a high speed. Therefore, a low cost reducer is required, which is relatively expensive. In order to solve the problem, a separate watering device must be installed.

1 is a cross-sectional view showing an example of a conventional screw drive type hermetic concentrator.

Referring to this figure, a sludge inlet pipe 2 and a sludge discharge pipe 3 are formed on both sides of the casing 1, respectively, and a drain pipe 3a is formed at the lower portion thereof, and the casing 1 is installed horizontally. The rotating shaft 5 of the screw 4 to be rotated by the drive motor 5, the outer periphery of the screw 4 is a cylindrical non-woven fabric to separate the water and solids to be in close contact with the screw 4 While the screen (6) is wrapped, the washing water pipe (8) having a plurality of nozzles (7) on the upper portion of the screen (6) can receive the washing water from the washing water pump (9) It is a structure.

When the concentrator drives the driving motor 5, the screen 6, which is in close contact with the screw 4 fixed to the rotating shaft 5 powered by the driving motor 5, rotates together, through the screen 6. The discharged sludge is discharged through the sludge discharge pipe (3a) to concentrate the liquid waste, the screen (6) is formed in a mesh structure so that the phenomenon that the sludge adheres to the screen inevitably occurs on the top of the screen (6) The high-pressure water injected into the nozzle 8 of the washing water pipe 8 to be installed in the regular cleaning, and the water used for cleaning is discharged through the drain pipe (3).

Therefore, the device becomes complicated for spraying the washing water, and the manufacturing cost is increased due to the drive motor having the reduction gear, and the drive motor rotates with a uniform torque, so it is not possible to operate the variable according to the capacity of the liquid waste to be treated. It is not effective in terms of treatment efficiency, and since the next washing water discharged after being used for cleaning of the screen has a problem of excessively high concentration treatment cost.

The present invention has a closed structure in which the screen is concealed by the casing and the cover, so it is easy to collect odors, and the slot of the screen is formed in the vertical direction, and the treated water flows through the gap between the screen and the scrubber to concentrate the hydraulic cylinder. This allows the cleaning piece with vertical reciprocating drive to continuously clean the screen slot during the thickening process, thereby completely preventing the sludge from adhering to the screen and having a low-cost vertical reciprocating driving screen cleaning device. To provide.

Technical features for achieving the object of the present invention is a casing in which the treated water is introduced, the outlet from which the concentrated liquid is separated from the introduced treated water, and the outlet from which the concentrated liquid from which the filtrate is separated is formed;

A screen in which a plurality of vertical slots are formed by a plurality of bars installed vertically at appropriate intervals in the casing;

A scrubber having a cleaning means inserted into a slot formed by a bar of the screen by forming a gap in which the processed water flows on an inner circumferential surface of the screen;

Moving means for moving the scrubber;

It is characterized in that it comprises a discharge valve for discharging the concentrated liquid formed by the moving means.

The cleaning means of the present invention is formed of a plurality of cleaning pieces inserted into each screen slot formed in the vertical direction.

In addition, the moving means adopts a hydraulic cylinder to move the scrubber vertically reciprocating in accordance with the processing amount of the liquid waste stock solution supplied.

In addition, the discharge valve has a structure that automatically opens and closes according to the concentrated liquid waste liquid.

In the present invention, the treated water flows into the gap between the scrubber and the screen after flowing into the casing, and the screen slot is automatically washed as the scrubber moves.

That is, while the scrubber is reciprocated vertically by the hydraulic cylinder in the sealed casing, the waste water is concentrated through the gap formed between the inner circumferential surface of the screen and the outer circumferential surface of the scrubber, and is concentrated. The screen is continuously cleaned by the cleaning means inserted into the slot so that the screen is not clogged so that solids are not stuck to the screen even without spraying the washing water. According to the capacity, it is possible to variably adjust the operating conditions of the hydraulic cylinder, which is characterized by improving the processing efficiency.

Features and advantages of the present invention will be more clearly understood by the embodiments described by the accompanying drawings.

Next, an embodiment of the present invention will be described.

1 is a perspective view showing the appearance of the present invention, Figure 2 is an exploded perspective view, Figure 3 shows a cross-sectional view.

As described in this figure, the sealed concentrator to which the present invention is applied is cleaned to prevent the solids from sticking to the casing 10, the screen 20, the scrubber 30, the hydraulic cylinder 40, and the screen 20. Means and a discharge valve (50) for discharging the concentrated liquid.

The casing 10 is formed in a cylindrical shape with an open top, and is supported by four supporters 100 and separated into an upper space 102 and a lower space 103 by a horizontal partition 101 therein, and a stock solution inflow pipe ( 104, the separation filtrate discharge tube 105, the concentrate discharge tube 106, and the cover 107.

The stock solution inlet tube 104 is a stock solution of a waste liquid in a liquid state to be concentrated, and is installed vertically through a horizontal plate 101 at a lower portion of the casing 10 so that an outlet is formed in an upper space 102. Located at the top of the

Separation filtrate discharge pipe 105 is to discharge the water discharged while the concentrated liquid waste liquid is concentrated, is formed on the side of the casing 10 and forms an outlet at the bottom of the upper space 102.

The concentrated liquid discharge pipe 106 is a liquid raw waste solution concentrated to discharge the concentrated liquid discharged primarily, and is formed as an elbow-shaped curved pipe on the bottom surface of the lower space 103.

The cover 107 is fixed to the flange 108 formed on the upper portion of the casing 10 with a fastener such as a bolt while the screen 30 including the scrubber 30 is installed in the upper space 102 of the casing 10. The casing 10 is sealed, and the hydraulic cylinder 40 for operating the scrubber 30 in the vertical direction is fixed at the center thereof.

The screen 20 is a structure in which a plurality of bars 200 having a long cross-section having a thin cross section are vertically erected in the circumferential direction, and the upper and lower portions thereof are fixed by the fixing rings 201 and 202, respectively, to be perpendicular to the circumferential direction. A plurality of slots 203 are formed between the plurality of bars so that the separated filtrate separated into the liquid waste stock solution can be discharged.

The bar 200 of the screen 20 has a square bar type (Square Bar Type) as the cross section as shown in Figure 6, (Wedge Wire Type) in the shape of a triangular pyramid as shown in Figure 7 In addition, as shown in FIG. 8, a round bar type (Round Bar Type) having a circular shape may be commonly applied, and the interval between slots 203 between the screen bars 200 may be 1 mm to 5 mm. .

The scrubber 30 is formed on the inner circumferential surface of the screen 20 by forming a disk-shaped upper plate 301 and a lower plate 302 having cleaning means on the upper and lower portions of the circumferential wall 300 formed in a cylindrical shape.

The upper plate 301 and the lower plate 302 are formed through holes 303 and 304 through which the stock solution inlet tube 104 passes, and the piston rod of the hydraulic cylinder 40 is fixed to the upper center of the upper plate 301 to move up and down. have.

9 and 10, the cleaning means penetrates through the insertion grooves 303 and 304 formed in the circumferential direction on the outer circumferential surfaces of the upper plate 301 and the lower plate 302 of the scrubber 30, and the insertion grooves 303 and 304. The formed pin hole 305 is drilled at regular intervals, and is formed of a plurality of cleaning pieces 50 which are inserted into the insertion grooves 303 and 304 so as to be flowably fixed to the fixing pin 306 fixed to the pin hole 304. do.

The cleaning piece 50 is formed of a pair of bent pieces 501 and 502 formed in parallel with each other from the substrate 500, and the fixing pin 306 is fixed to an inner space formed by the substrate 500 and the bent pieces 501 and 502. In accordance with the upper plate 301 and the lower plate 302 is installed so as not to be possible to flow.

The cleaning piece 50 which is fixed in such a manner that the cleaning piece 50 is freely pivoted when contacting the side surface of the bar 200 in the inserted state in the slot 203 may prevent excessive friction.

The hydraulic cylinder 40 is fixed to the cover 107 while the piston rod is fixed to the upper plate 301 of the scrubber 30 to move the scrubber 30 in the lifting, the amount of the liquid waste treatment stock solution supplied Therefore, it is operated with proper driving force.

The discharge valve 60 includes a discharge hole 600 formed at the center of the horizontal plate 101 of the case 10, a valve housing 601 fixed to the discharge hole 600, a compression coil spring 602, It is provided to be opened and closed by the same elastic member 6020.

As shown in FIG. 4, the sealed concentrator according to the present invention has a feed water (not shown) when the cleaning piece 50 is located at the upper portion thereof. Supplied.

At this time, the supply method of the liquid waste stock solution may be applied to a continuous supply method and a method of supplying a constant unit amount.

When the liquid waste stock solution is supplied to the inside of the screen 20, the hydraulic cylinder 40 is operated to move the piston rod downward so that the scrubber 30 descends, and the treated water stock solution is the inner circumferential surface of the screen 20 and the upper plate of the scrubber 30. Concentration proceeds in the process of passing through the space between the outer peripheral surface of 301 and the lower plate 302.

In this concentration process, the separation filtrate passing through the slot 203 of the screen 20 is discharged through the separation filtrate discharge pipe 105, and the treated water containing a large amount of solids is concentrated as the discharge valve 50 is opened. It is discharged through the discharge pipe 106 and transported to a dehydrator installed for a separate processing step.

In this way, the process liquid of the liquid waste liquid is reciprocated by the hydraulic cylinder 40 while the scrubber 30 moves up and down, and the cleaning piece 50 formed on the scrubber 30 automatically reciprocates the slot of the screen 20. While the sludge is scraped continuously, it is possible to prevent the sludge from sticking to the screen.

According to the present invention, the screen is concealed by a casing and a cover, which is a sealed structure, so that the odor is easily collected, thereby preventing the environmental pollution, and improving the working environment. The hydraulic cylinder rises and falls at a rate depending on the amount of the treated water solution. By controlling variably and controlling the concentration and throughput appropriately, it is possible to obtain a constant sludge concentration and a water content of the separated solids with low power requirements.

In addition, as the scrubber is moved up and down by the hydraulic cylinder, the cleaning piece inserted into the slot scratches the sludge so that the sludge is not fixed to the screen by a simple structure even without a separate spraying facility as in the prior art.

In particular, the concentrator of the present invention can be utilized directly in the dehydration pretreatment step without design modification to the existing dehydrator, there is an advantage that can improve the efficiency of the dehydrator by two to three times with only a small installation and operating costs.

Claims (7)

A casing in which the treated water flows in, the outlet from which the concentrated liquid is separated from the introduced treated water is discharged, and the outlet from which the concentrated liquid from which the filtrate is separated is discharged; A screen in which a plurality of vertical slots are formed by a plurality of bars installed vertically at appropriate intervals in the casing; A scrubber having a cleaning means inserted into a slot formed by a bar of the screen by forming a gap in which the processed water flows on an inner circumferential surface of the screen; Moving means for moving the scrubber; Including a discharge valve for discharging the concentrated liquid formed by the moving means is concentrated in the flow between the scrubber and the screen after the treated water flows into the casing, the screen slot is washed as the scrubber moves A sealed concentrator provided with a vertical reciprocating drive screen cleaning device. The method of claim 1, wherein the cleaning means is formed in the outer circumferential surface of the upper plate 301 and the lower plate 302 of the scrubber 30 in the circumferential direction and the pin hole formed through the insertion grooves (303, 304) 305 is formed of a plurality of cleaning pieces 50 that are punctured at regular intervals and inserted into the insertion grooves 303 and 304 so as to be flowably fixed to the fixing pins 306 fixed to the pin holes 304. A hermetic condenser provided with a vertical reciprocating drive screen cleaning device for performing dewatering pretreatment of sludge. 2. A hermetic concentrator with a vertical reciprocating screen cleaning device for carrying out the dewatering pretreatment of the sludge according to claim 1, wherein the moving means is a hydraulic cylinder. 2. The hermetic concentrator of claim 1, wherein the screen has a rectangular bar shape in which a cross section of the screen is rectangular. 2. A hermetic condenser having a vertical reciprocating screen cleaning device for performing dewatering pretreatment of sludge according to claim 1, wherein the cross section of the screen is wedge-shaped in the shape of a triangular pyramid.  2. A hermetic condenser having a vertical reciprocating screen cleaning device for performing dewatering pretreatment of sludge according to claim 1, characterized in that the cross section of the screen is a round bar. The cleaning piece 50 is formed of a pair of bent pieces (501, 502) formed in parallel with each other from the substrate 500, and fixed to the inner space formed by the substrate 500 and the bent pieces (501,502) Closed concentrator provided with a vertical reciprocating drive screen cleaning device for performing the dewatering pre-treatment of the sludge, characterized in that the fin 306 is fixed to the upper plate (301) and the lower plate (302).

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