KR101009439B1 - Drum screen - Google Patents

Abstract

PURPOSE: A drum screen is provided to improve the productivity per unit area by increasing the site efficiency, and to effectively filter sludge for improving the water quality of a fish farm. CONSTITUTION: A drum screen comprises the following: a rotation drum(100) with a screen mesh(102) for filtering sludge installed on the side, including an opening(101) for inflowing waste water; a center shaft(200) rotatably supporting the rotation drum; a drum driving unit(300); a supporting frame(400) installed in the inside of a water tub(800) storing filtered water passed through the screen mesh; a partition wall for secluding the waste water and the filtered water inside the water tub; a sealing plate(402) installed on the partition wall to be overlapped with an inner surface(103) of the opening; a spraying unit removing the sludge from the screen mesh; a sludge receiver(600); and a sludge discharging pipe(700).

Description

Drum Screen

The present invention relates to a drum screen (Drum Screen), and more particularly to a drum screen used to filter the sludge primary, such as fish excrement, fish secretions, feed waste in a circulating filtered fish farm.

Circulating filtered fish farming can raise fish in a high density by purifying the water in the breeding area and using it again, and raising the temperature of the breeding water by using a boiler even in the winter when the water temperature is low. There is an advantage of not using much.

However, such a circulating filtered fish farming is less total water (water quantity) than the amount of fish accommodated, so the deterioration rate of water due to feces, such as excreta has a severe disadvantage. Therefore, sludge, such as feces or leftovers, if not removed as soon as possible, weakens the physiological function of the fish causes the disease.

Sludge from fish farms can harm fish gills or convert it into toxic dissolved substances such as ammonia and nitrous acid, increasing the load of the physical and biological filtration tanks at the rear end of the circulating filtration, increasing facility and operating costs. It is important for fish farms to be separated from breeding water as soon as possible, as this will lead to blockage and dissolved oxygen will increase consumption.

The most commonly used methods to remove sludge from fish farms are drum screen, sedimentation method, sand filter and protein skimmer.

9 is a view showing a drum screen according to the prior art, when sewage is introduced into the tank through the inlet 11 formed on one side of the tank 10 formed of a concrete structure as shown, the sewage is cylindrical Purification drum 12 is formed in the same tank as the outer periphery and the curvature of the center of the purification drum or higher, that is, hemispherical shape is formed in the tank as a gap 20 that does not cause interference during the rotation of the purification drum 12 The sewage obtained by the partition wall 30 is flowed into the purification drum through one side opening 14 of the purification drum 12.

At this time, the purification drum 12 is installed on the shaft of the motor 50 to drive the second sprocket 53 connected to the first sprocket 51 and the chain 52 for transmitting power to the second sprocket 53 is By rotating the rotating shaft 60 provided, the purification drum 12 supported by the bearing is rotated.

On the other hand, the mash of the purification drum immersed by the sewage recalls the sludge of the sewage located in the inner side, the sludge floated by the mesh is rotated together in the state caught in the rotating mesh and the outer upper portion of the purification drum 12 The mesh is washed by the nozzle pressure of the washing device 70 installed in the sludge and the sludge is dropped into the sludge receiver 80 installed on the inner upper portion of the purification drum 12 to discharge the sludge of the fixed shaft 90 through the connecting pipe. The sewage discharged to the outside by the ball 91 and the sludge is removed is drained to the outlet 15 through the mash through the purification drum.

At this time, a part of the sewage flows into the clearance 20 between the purification drum 12 and the partition wall 30 in the introduced sewage, and there is a problem that sludge is not completely removed.

In addition, the conventional drum screen is installed in a fixed tank formed by partitioning the concrete separately from the fish tank, it takes a long time to install because the installation of the fixed simple tank to install the drum screen first.

In addition, such a fixed tank generally takes a large site, there is also a problem that the space efficiency of the fish farm is reduced.

In addition, when a drum screen is installed by installing a concrete fixed tank in a large tank, it takes a long time to cure after pouring concrete, excessive construction cost, and additional time and expense to remove the toxicity of the cured concrete. However, it takes a lot of time and money to actually fish.

Therefore, the present invention is to solve the problems described above, the object of the present invention is easy to install, less time and expense required for installation work, less installation space, can be immediately fished after installation To provide a drum screen.

Another object of the present invention is to provide a drum screen that can improve the filtration efficiency by improving the filtration efficiency by blocking the inflow of sewage by blocking the gap between the drum and the partition wall with a sealing plate.

Another object of the present invention is to provide a drum screen which is easy to replace and maintain the screen net.

Still another object of the present invention is to provide a drum screen which is easy to maintain the spray device for cleaning the screen net.

Still another object of the present invention is to provide a drum screen which can prevent the injection nozzle from clogging by installing a cleaning valve on the injection device to remove foreign substances caught in the pipe.

The drum screen of the present invention for achieving the above object, the one circular surface is blocked and the other circular surface is open to form an opening through which the sewage flows into the inside, the cylindrical side is rotated to screen screen net filtering sludge drum; A central axis rotatably supporting the rotating drum; A drum drive for rotating the rotating drum; A support frame installed in a simple water tank in which a central axis is fixed and sewage flows in and filtered water collected through a screen network; A partition wall installed so as not to cover the opening in the support frame and blocking the sewage and the filtered water from mixing in the simplified water tank; A sealing plate provided to overlap the inner surface of the opening in the partition so as to prevent a gap between the partition and the opening; An injection device installed on the support frame to the outside of the rotating drum and spraying filtrate to remove sludge stuck to the screen net; A sludge receiver installed opposite to the injection device in the rotating drum to receive the sludge falling; A discharge pipe connected to the sludge receiver to discharge sludge; .

Here, the rotating drum includes a plurality of circular frames constituting the frame and a horizontal frame connected to each other supporting the circular frame, characterized in that the screen net is pressed and fixed to the outside of the frame by a fixing member.

The screen net is composed of a rectangular plate-shaped support having a plurality of through holes, a microporous screen adhered to one side of the support, and a sealing pad attached to the other side of the support for sealing with the rotating drum. It features.

In addition, the central axis is characterized in that the sliding bearing is interposed to support the rotation drum rotatably.

In addition, the drum drive device uses a motor, characterized in that the sprocket is installed on the electric shaft and the rotating drum and the chain or belt is hooked thereto to transmit power.

In addition, the injection device is characterized in that the pumping of the filtered water of the simple water tank to the pump through a plurality of injection nozzles installed in the pipe.

In addition, the injection device is characterized in that the hinge is connected to the protective cover for protecting the rotating drum to the upper side of the support frame.

In addition, the upper side of the injection device is characterized in that the handle is easily lifted up during maintenance and replacement of the injection nozzle.

And, the discharge pipe is characterized in that it is in communication with the central axis through the central axis connecting pipe from the sludge receiver.

In addition, one end of the central axis is characterized in that it is used as a sludge discharge port for discharging the sludge stored in the sludge receiver to the outside.

In addition, the injector includes a pump for pumping the filtered water, a pipe for supplying the pumped filtered water, a plurality of spray nozzles for washing and spraying sludge fixed in the screen net with the filtered water supplied from the pipe, and the spray nozzles If the resulting foreign matter accumulated, it characterized in that it comprises a cleaning valve for discharging the foreign matter.

And, the front surface of the injection device is characterized in that the spray water for preventing the sprayed washing water to splash out to the outside screen screen is installed.

Moreover, the simple water tank is characterized by being a movable container body.

Here, the simple water tank is a rectangular container body, and the drain plate for cleaning is formed in the bottom plate, and the left plate is formed with a sewage inlet through which the sewage flows into the simple water tank and a through hole corresponding to the discharge pipe of the central axis. The left and right side plates are characterized in that the reinforcement is attached to withstand water pressure.

In addition, the front and rear plates and the bottom plate of the simple water tank and the opening side support frame of the rotating drum is characterized by sealing with a sealing material.

As described above, the present invention has the advantage that the installation is simple by using a simple water tank, less time and expense required for installation work, and because the installation space is small, the site utilization efficiency is increased and productivity per unit area is increased.

In addition, the sludge is effectively filtered to improve the water quality of the fish tank, thereby reducing the mortality of fish and increasing the feed intake of the rearing fish, thereby shortening the farming period.

In addition, by installing a sealing plate between the partition and the opening of the rotating drum there is an effect of preventing the mixing of sewage without going through the filtration process.

In addition, there is an advantage that the maintenance of the screen net is easy to replace.

In addition, there is an advantage that it is convenient to replace or repair the spray nozzle by allowing the spray apparatus for cleaning the screen net to be flipped open.

In addition, it is also possible to reduce the clogging of the injection nozzle by providing a cleaning valve to the injection device to be cleaned at any time.

1 is a cross-sectional view of an installation of a drum screen according to an embodiment of the present invention,
2 is a perspective view of a drum screen according to an embodiment of the present invention,
3 is an exploded perspective view of a drum screen according to an embodiment of the present invention;
4 is a view showing a state in which the screen net is removed in FIG.
5 is an assembly view showing the installation of the screen net on the drum drum of the drum screen according to the embodiment of the present invention,
Figure 6 is an exploded perspective view showing a screen net applied to the drum screen according to an embodiment of the present invention,
7 and 8 are a perspective view showing a simple water tank for use in the drum screen according to an embodiment of the present invention,
9 is a sectional view of an installation of a drum screen according to the prior art.

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

1 is a cross-sectional view of a drum screen according to an embodiment of the present invention, Figure 2 is a perspective view of a drum screen according to an embodiment of the present invention, Figure 3 is an exploded perspective view of a drum screen according to an embodiment of the present invention, The drum screen according to the present invention, as shown in Figure 1, is installed and operated spaced apart from one wall surface of the simple water tank 800 in a simple water tank 800, the simple water tank 800 is a breeding tank (not shown) It can be installed in one side of the inside, or can be installed outside the breeding tank.

The drum screen according to the present invention, the rotating drum 100 for filtering sludge, the central axis 200 for supporting the rotating drum 100, the drum drive device for rotating the rotating drum 100, the central axis ( 200 is fixed to the support frame 400, the injection device 500 for cleaning the rotating drum 100, the sludge receiving 600 receiving the sludge and washing water from the rotating drum 100, the sludge and the washing water It is configured to include a discharge pipe line 700 which is a discharge pipe.

Rotary drum 100 is to separate the sludge from the sewage containing the sludge of the fish tank using centrifugal force, one circular surface is blocked and the other circular surface is opened to form an opening 101 through which the sewage flows into the interior. And, the cylindrical side is equipped with a screen net (102) for filtering the sludge.

As shown in FIG. 6, the screen net 102 includes a rectangular plate-like support 107 having a plurality of through holes, a microporous screen 108 adhered to one side of the support, and a rotating drum 100. It comprises a sealing pad 109 attached to the other side of the support 107 for sealing with the side surface of, is mounted to the rotating drum 100 by a fixing member 106 as shown.

Accordingly, when the rotating drum 100 is rotated, the sludge contained in the sewage is attached to the screen 108 of the screen net 102 by centrifugal force, and the filtered sludge separated from the sludge is collected in the simple water tank 800. The filtered fresh water collected in the simple water tank 800 is immediately sent to the fish tank to be reused or sent to a device such as a next water treatment unit, for example, a skimmer (not shown).

Although described above, the drum screen according to the present invention is used in a circulating filtration fish farm, and since the operation method of the entire fish farm system or other water treatment apparatus except the drum screen is already well known, a detailed description thereof will be omitted.

The rotating drum 100 includes a plurality of circular frames 104 constituting a frame and a horizontal frame 105 connecting and supporting the circular frames 104. Accordingly, the horizontal frame 105 and the circular frame 104 have a rectangular shape when flattened, and the screen net 102 having a size corresponding to the rectangular portion is compressed by the fixing member 106 as shown in FIG. 5. It is fixed. Fixing member 106 is to press each side of the screen net 102 to the rectangular frame (104, 105) portion is pressed to form a sealing. Such pressing may be performed by adjusting a clamping force so that the fixing member 106 is not damaged by using a bolt (not shown) and a nut (not shown). Accordingly, the screen net 102 can be easily replaced or maintained by releasing the bolts and nuts to remove the fixing member 106.

The central axis 200 is fixed to the support frame 400 which will be described later, and rotatably supports the rotating drum 100. In other words, the central axis 200 is separated from the rotating drum 100, and only the rotating drum 100 rotates about it.

It is preferable that the rotating drum 100 is configured to support the rotating drum 100 via a sliding bearing on the central axis 200 so as to rotate smoothly. Since this is also a commonly used method, detailed description thereof will be omitted.

The drum drive device 300 is for rotating the rotating drum 100, and uses the motor 304, and installs the sprockets 301 and 302 on the electric shaft and the rotating drum 100, and thus the chain 303 or The rotating drum 100 may be rotated by transmitting power by hanging a belt (not shown).

Of course, an internal combustion engine or aberration may be used instead of the motor 304, and other power transmission methods may be used instead of the sprockets 301 and 302 and the chain 303, which is also within the scope of the present invention.

The support frame 400 is fixed to the above-described central axis 200, installed in a simple water tank 800 in which the filtered water passing through the screen net 102 is spaced at a predetermined interval from the wall surface, forming the skeleton of the drum screen The partition 401 is provided on the opening 101 side of the rotating drum 100.

The partition wall 401 is installed so as not to cover the opening 101 as shown in FIGS. 3 and 4 and blocks the sewage from being mixed with the filtered water in the simple water tank 800. This is possible by installing the partition wall 401 and the wall surface of the simple water tank 800 to be sealed.

Moreover, the sealing plate 402 is provided in the partition 401 so that the inner surface 103 of the opening 101 may overlap, and the space | interval between the partition 401 and the opening 101 is prevented. Accordingly, the sewage can be prevented from mixing with the filtered water of the simple water tank 800 without passing through the screen net 102.

The partition wall 401 is formed with a skirt portion 404 extending to face the opening 101 of the rotating drum 100, and the threaded portion 404 is provided with a screw pin 405 at predetermined intervals. Therefore, the sealing plate 402 can be installed easily and stably using the fixing plate 406 and the nut (not shown).

Injector 500 is installed on the support frame 400 to the upper side of the rotating drum 100 and serves to drop the sludge stuck to the screen net 102 by spraying the filtered water.

In addition, the injection apparatus 500 sprays the filtration water of the simple water tank 800 through the plurality of injection nozzles 502 provided in the pipe 501 which extends along the length of the rotary drum 100 by pulling the filtered water to the pump 801. By dropping the sludge.

In total, the injector 500 includes a pump 503 for pumping the filtered water, a pipe 501 for supplying the pumped filtered water, and a sludge bound to the screen network 102 with the filtered water supplied from the pipe 501. A plurality of injection nozzles 502 for washing and spraying, and a cleaning valve 504 for discharging foreign matters when the foreign matters accumulate as a result of cleaning and checking the injection nozzles 502 are configured.

In addition, as shown in Figure 3, the injection device 500 is connected to the protective frame 403 to protect the rotating drum 100 above the support frame 400 is installed by a hinge 507. It is convenient to replace and repair the injection nozzle 502 by configuring the hinge 507 to open and flip. In addition, the handle 506 is provided on the upper side of the injection device 500 can be easily lifted up during maintenance and replacement of the injection nozzle 502.

In addition, the front surface of the injection device 500 may be provided with a spray water rim film 505 for preventing the sprayed washing water to splash out of the screen net 102. Therefore, the washing water splashing in the winter can not only prevent freezing, but also conserve water.

Sludge away from the screen 108 is collected in the sludge receiver 600 installed facing the injection device 500 inside the rotary drum 100. The sludge collected in the sludge receiver 600 is discharged to the outside through the discharge pipe 700 is processed through a separate process.

The discharge pipe 700 refers to a pipe in communication with the central axis 200 via the central axis connecting pipe 601 from the sludge receiving 600, through which the discharge of sludge is made. One end of the central shaft 200 is used as a sludge discharge port 305 for discharging the sludge stored in the sludge receiver 600 to the outside.

The simple water tank 800 is a movable container body as shown in FIGS. 7 and 8, and unlike the conventional water tank using conventional concrete, the simple water tank 800 may be manufactured separately and installed inside or outside the fish tank. Shorten the time, and also because it uses a material that is harmless to the growth of fish, such as metals and resins resistant to corrosion, there is an advantage that can be used immediately after installation.

The simple water tank 800 is a rectangular container body, and a cleaning drain 804 is formed at the bottom plate 830, and the sewage inlet 802 and the central shaft (107) to which wastewater flows into the simple water tank 800 are provided at the left plate 810. A through hole 803 corresponding to the discharge pipe line 700 of the 803 is formed, and the reinforcing material 801 to withstand the water pressure in the bottom plate 830 and the front and back plates 820 and 821 and the left and right side plates 810 and 811. Is attached.

The front and rear plates 820 and 821 and the bottom plate 830 of the simple water tank 800 and the support frame 400 on the opening 101 side of the rotating drum 100 are sealed by a sealing material, and thus are installed. Sewage and filtered water can be prevented from mixing in the simple water tank (800).

The operation of the drum screen having the configuration as described above will now be described.

Sewage in the breeding tank (not shown) is supplied to the drum screen through the opening 101 of the rotary drum (100). The supplied sewage is sludge separated by the screen 108 of the screen net 102, and the filtered water is collected in the simple water tank (800). This filtration process is preferably performed 24 hours a day continuously.

The filtered water collected in the simple water tank 800 is directly sent to the rearing tank, or sent to another water treatment device such as a skimmer (not shown), and then processed and sent to a breeding tank for reuse.

The sludge caught on the screen 108 is collected by the injection device 500 to the sludge receiver 600, and is discharged to the outside through the discharge pipe 700 and the sludge discharge port 305. While the filtration process by the rotating drum 100 is continuously performed, the screen 108 cleaning operation by the injection device 500 is continuously or intermittently performed.

For example, once every 5 minutes, it will run for 20-30 seconds. This is to save water that goes into the cleaning of the screen net 102, because the water used to clean the screen net 102 of the rotating drum 100 is discarded together with the sludge is not recycled.

Such intermittent operation is made by a controller (not shown) that is generally installed and used in a circulating filtration fish farm, which is well known and thus detailed description thereof will be omitted.

The foregoing descriptions are merely illustrative of one embodiment, and the present invention is not limited to the above-described embodiments, and may be variously modified within the scope of the appended claims. For example, the shape and structure of each component specifically shown in the embodiments of the present invention can be modified and implemented.

The drum screen of the present invention is installed and operated in a fish farm, and is used to filter the sludge of fish tanks, and in particular, it can be used for filtration of the primary circulating water in a circulating filtration fish farm.

100 revolving drum 101 opening
102 Screen Network 103 Inside
104 Circular Frame 105 Horizontal Frame
106 Fixing member 107 Support
108 screen 109 sealing pad
200 central axis 300 drum drive
301 Sprockets 302 Sprockets
303 chain 304 motor
305 Sludge Discharge 400 Support Frame
401 bulkhead 402 sealing plate
403 Protective cover 404 Skirt
405 Screw Pin 406 Retaining Plate
500 injector 501 pipe
502 Injection Nozzle 503 Pump
504 Cleaning valve 505 Jet water membrane
506 handle 507 hinge
600 sludge receive 601 center axis connector
700 water tank 800 water tank
801 Stiffener 802 Sewage inlet
803 Central Shaft Through Hole 804 Cleaning Drain
810 Left Side Plate 811 Right Side Plate
820 Plates 821 Plates
830 sole plate

Claims (15)

One side of the circular surface is blocked and the other side of the circular surface is open to form an opening (101) in which the sewage flows into the inside, the cylindrical drum side screen screen for filtering the sludge (102) is mounted rotating drum (100);
A central axis 200 rotatably supporting the rotating drum 100;
A drum drive device 300 for rotating the rotating drum 100;
A support frame 400 fixed to the central shaft 200 and installed in a simple water tank 800 in which sewage is introduced and filtrate water passing through the screen network 102 is collected;
A partition 401 installed on the support frame 400 so as not to cover the opening 101 and blocking the sewage and the filtered water from being mixed in the simple water tank 800;
A sealing plate 402 provided on the partition 401 so as to overlap the inner surface 103 of the opening 101 so as to prevent a gap between the partition 401 and the opening 101;
An injection device 500 installed on the support frame 400 to the outside of the rotating drum 100 to inject the filtered water to remove the sludge stuck to the screen net 102;
A sludge receiving unit 600 which receives the sludge which is installed to face the injection device 500 and faces the inside of the rotating drum 100;
And a discharge pipe 700 connected to the sludge receiving device 600 for discharging the sludge.
The simple water tank 800 is a drum screen, characterized in that the movable container body.
The method of claim 1,
The rotating drum 100 includes a plurality of circular frames 104 constituting a frame and a horizontal frame 105 for supporting the circular frames 104 to each other, and the screen net 102 is disposed outside the frames 104 and 105. Drum screen, characterized in that the pressing fixed to the fixing member (106).
The method of claim 2,
The screen net 102 is a support for sealing the rectangular plate-like support 107 having a plurality of through holes, the microporous screen 108 adhered to one side of the support 107, and the rotating drum 100. Drum screen comprising a sealing pad (109) attached to the other side of the (107).
The method of claim 1,
A central screen 200 is a drum screen, characterized in that the sliding bearing is interposed to support the rotatable drum (100) rotatably.
The method of claim 1,
Drum drive device 300 uses a motor 304, the sprocket (301, 302) is installed on the electric shaft and the rotating drum 100, characterized in that to transfer power to the chain 303 or belt Drum screen.
The method of claim 1,
The injection device 500 is a drum screen, characterized in that to pump the filtration water of the simple water tank (800) to the pump (801) through a plurality of injection nozzles (502) installed in the pipe (501).
The method of claim 6,
The injection device 500 is a drum screen, characterized in that the support frame 400 is connected to the protective cover 403 to protect the rotating drum 100 by the hinge 507 is installed.
The method of claim 7, wherein
The drum screen, characterized in that the handle 506 is installed on the upper side of the injection device 500 can be easily lifted up during maintenance and replacement of the injection nozzle (502).
The method of claim 1,
Discharge pipe line 700 is a drum screen, characterized in that in communication with the central axis 200 via the central axis connecting pipe (601) from the sludge receiving (600).
The method of claim 1,
One end of the central shaft (200), the drum screen, characterized in that it is used as a sludge discharge port (305) for discharging the sludge stored in the sludge receiver (600) to the outside.
The method of claim 6,
The injector 500 includes a pump 503 for pumping the filtered water, a pipe 501 for supplying the pumped filtered water, and a sludge fixed to the screen net 102 by the filtered water supplied from the pipe 501. And a plurality of injection nozzles (502) and a cleaning valve (504) for discharging foreign matters when foreign matters accumulate as a result of cleaning and checking the injection nozzles (502).
12. The method of claim 11,
Drum screen, characterized in that the sprayed water rim film 505 is installed on the front surface of the injection device 500 to prevent the sprayed washing water to splash out of the screen net 102.
delete The method of claim 1,
The simple water tank 800 is a rectangular container body, and a cleaning drain 804 is formed at the bottom plate 830, and the sewage inlet 802 and the central shaft (107) to which wastewater flows into the simple water tank 800 are provided at the left plate 810. A through hole 803 corresponding to the discharge line 700 of the 803 is formed, and the bottom plate 830 and the front and back plates 820 and 821 and the left and right side plates 810 and 811 are provided with a reinforcement member 801 to withstand water pressure. Drum screen, characterized in that attached.
The method of claim 14,
Front and rear plates (820, 821) and bottom plate (830) of the simple water tank (800) and the drum 101, characterized in that the sealing frame of the opening 101 side of the rotating drum 100 is sealed with a sealing material.

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