KR102465395B1 - drum screen for treating water - Google Patents

Abstract

The present invention relates to a drum screen for water treatment, and more particularly, to a drum screen for water treatment capable of effectively filtering water from a farm.
The drum screen for water treatment of the present invention includes a support frame, a fixed shaft of a hollow structure fixed to the support frame and empty inside, and rotatably coupled to the fixed shaft, so that the water to be treated flows in and a filter net is mounted on the outer circumferential surface. A drum, a rotary driving part for rotating the drum, a washing pipe installed above the drum to spray washing water from the outside of the drum to the inside to remove foreign substances attached to the filter net, and washing water installed inside the drum and a collection hopper for receiving foreign substances detached from the filter network by the , and a support pipe connecting the fixed shaft and the collection hopper to form a passage through which the foreign substances are introduced into the fixed shaft.

Description

Drum screen for water treatment

The present invention relates to a drum screen for water treatment, and more particularly, to a drum screen for water treatment capable of effectively filtering water from a farm.

Inland aquaculture, the target fish species are nurtured through the trapped water. Water quality tends to deteriorate due to various causes such as food supply, excretion of individuals, and mortality, and as a result, problems such as mass death and growth retardation occur. .

Furthermore, in order to increase productivity, it is inevitable to cluster as many individuals as possible within a given breeding space, which further increases the cause of water quality deterioration.

Since artificial aquaculture facilities have very low self-filtration, a separate filtering facility must be provided. The filtration facility removes solid waste and dissolved organic matter, and various water treatments such as pH adjustment, reduction of toxic compounds such as ammonia and nitrous acid, and increase of dissolved oxygen are performed.

In the step-by-step water treatment, the first step is to filter organic matter suspended in the water with a filter. If even small enough organic matter can be filtered and removed in the initial stage of water treatment, the purification efficiency can be greatly improved in the subsequent treatment stage.

In general, drum screen, sedimentation method, sand filter, etc. are the most commonly used filtration methods in fish farms.

Korean Patent Registration No. 10-1089549 discloses a drum screen device.

The drum screen device has the advantage of simple structure because it does not use a rotating shaft, but since the support roller supports the sorting barrel in a suspended manner from the top, the self-weight and dynamic load of the sorting barrel are concentrated on the support roller, so the support roller wears out. There is a problem that is getting worse.

In addition, since the conventional drum screen device sprays only washing water to drop foreign substances, there is a limitation in removing foreign substances.

Republic of Korea Patent Registration No. 10-1089549: Non-vibration and noise-free drum screen device for fish farms

The present invention was created to improve the above problems, and it is an object of the present invention to provide a drum screen for water treatment that can increase rigidity by supporting a rotating drum as an axis and effectively remove foreign substances attached to the drum by spraying washing water. have.

The drum screen for water treatment of the present invention for achieving the above object includes a support frame; a fixed shaft of a hollow structure fixed to the support frame and having an empty interior; a drum rotatably coupled to the fixed shaft, the water to be treated flows into the inside, and a filter net is mounted on the outer circumferential surface; a rotation driving unit for rotating the drum; a washing pipe installed above the drum to spray washing water from the outside to the inside of the drum to remove foreign substances attached to the filter net; a collection hopper installed inside the drum to receive foreign substances detached from the filter net by the washing water; and a support pipe connecting the fixed shaft and the collection hopper to form a passage through which the foreign material flows into the fixed shaft.

It further includes; a desorption promoting unit for applying vibration to the filter net by colliding with the filter net when the washing water is sprayed to the drum.

The detachment promoting unit includes a first connection pipe branched from the washing pipe, a cylindrical chamber to which the first connection pipe is connected to one side, and a second connection pipe connected to the other side of the chamber and extending to the washing pipe; It is installed in the chamber and rotates by the washing water passing through the chamber;

As described above, the present invention can effectively remove foreign substances adhering to the drum by increasing the rigidity by supporting the rotating drum as an axis and spraying washing water from the outside of the drum.

In addition, when the washing water is sprayed, vibration is applied to the filter net of the drum to promote the removal of foreign substances, thereby increasing the foreign substance removal efficiency.

1 is a perspective view of a drum screen for water treatment according to an example of the present invention;
Figure 2 is a cross-sectional view seen from the side of Figure 1,
Figure 3 is a cross-sectional view seen from the front of Figure 1,
4 is a perspective view of a drum screen for water treatment according to another example of the present invention;
5 is a perspective view showing the main part of a drum screen for water treatment according to another example of the present invention.

Hereinafter, a drum screen for water treatment according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the drum screen for water treatment of the present invention includes a support frame 10, a fixed shaft 20 of a hollow structure fixed to the support frame 10 and empty inside, and a fixed shaft 20 ) is rotatably coupled to the drum 30 to which the water to be treated flows into and a filter network 39 is mounted on the outer peripheral surface, a rotational driving unit 40 for rotating the drum 30, and the drum 30 A washing pipe 50 installed on the upper side to spray washing water from the outside to the inside of the drum 30 to remove foreign substances attached to the filter network 39, and a washing pipe installed inside the drum 30 to be washed with the washing water. A support for forming a passage through which a foreign material is introduced into the inside of the fixed shaft 20 by connecting the collection hopper 60 and the fixed shaft 20 and the collection hopper 60 to receive foreign substances detached from the filter network 39 . A tube (65) is provided.

The support frame 10 is assembled in a rectangular shape as a whole by connecting a plurality of angular pipes 11 vertically and horizontally. The support frame 10 supports the fixed shaft 20 .

The fixed shaft 20 is fixedly installed to the support frame 10 . The fixed shaft 20 is long installed in the front-rear direction of the support frame 10 . The front and back of the fixed shaft 20 can be fixed to the upper portion of the support frame 10 by using the fixing bracket (3).

The fixed shaft 20 is made of a hollow structure with an empty interior. The foreign substances desorbed from the filter net 39 of the drum 30 through the fixed shaft 20 may move together with the washing water.

The drum 30 is rotatably coupled to the fixed shaft 20 . The front and rear surfaces of the drum 30 are blocked, and a filter net 39 is mounted on the outer peripheral surface of the drum 30 . The front and rear surfaces of the drum 30 are supported on a fixed shaft 20 by a support 7 . Two ring frames 5 are installed on the fixed shaft 20 , and a support 7 is connected to each ring frame 5 . A bearing is installed between the ring frame 5 and the fixed shaft 20 . It is preferable to use an oilless bearing as the bearing.

The drum 30 rotates 360 degrees with the fixed shaft 20 as the center of rotation by the driving unit 40 to be described later.

The drum 30 may have a cylindrical structure by assembling annular body frames 31 and a connecting rod 33 connecting the body frames 31 . A filter network 39 is installed between the body frames 31 . The size of the eyes of the filter net 39 is appropriately applied according to the size of the foreign material to be filtered. Of course, the filter net 39 is formed in a square shape as shown in FIG. 4 and can be installed on the outer circumferential surface of the drum 30 in an assembling manner.

The rotation driving unit 40 includes a motor 41 installed on the support frame 10 , a driving gear 43 coupled to the rotation shaft of the motor 41 , and a driven gear 47 coupled to the ring frame 5 . is done

The washing pipe 50 is installed above the drum 30 . The washing pipe 50 is installed long in the front and rear along the longitudinal direction of the drum 30 . A plurality of injection holes are formed in the washing pipe 50 so that the washing water is injected at a constant pressure. In addition, a separate spray nozzle is installed in the washing pipe 50 so that washing water can be sprayed through the spray nozzle, of course.

The washing pipe 50 sprays washing water at high pressure from the outside to the inside of the drum 30 to remove foreign substances attached to the filter network 39 .

Although not shown, the washing pipe 50 may be connected to a water tank and a washing water supply pipe in order to supply high-pressure washing water to the washing pipe 50 . A high-pressure pump for pumping the washing water stored in the water tank to a high pressure may be installed in the washing water supply pipe.

Groundwater or tap water can be used as washing water stored in the water tank. In addition, some of the filtered water passing through the filter network 39 of the drum may be stored in a water tank and used as washing water.

The collection hopper 60 is installed inside the drum 30 . The collection hopper 60 receives foreign substances detached from the filter network 39 by the washing water sprayed from the washing pipe 50 .

The collection hopper 60 is formed with a wide upper inlet, and a narrow lower portion. The collection hopper 60 is installed long in front and back along the longitudinal direction of the drum 30 . The collection hopper 60 is installed at a position corresponding to the washing pipe 50 .

When the washing water is sprayed from the washing pipe 50, the foreign substances detached from the filter network 39 fall to the inside of the collecting hopper 60 together with the washing water and are collected.

The support pipe 65 serves to fix the collection hopper 60 to the inside of the drum 30 . The upper portion of the support tube 65 is connected to the lower portion of the collection hopper 60 , and the lower portion of the support tube 65 is connected to the fixed shaft 20 .

The support pipe 65 is made of a hollow structure with an empty inside. Therefore, the support pipe 65 connects the fixed shaft 20 and the collection hopper 60 to form a passage through which foreign substances can be introduced into the fixed shaft 20 .

The foreign substances and washing water collected in the collection hopper 60 are introduced into the fixed shaft 20 through the support pipe 65 . Foreign substances and washing water are discharged to the outside through one side of the fixed shaft (20). Foreign substances and washing water discharged from the fixed shaft 20 may be separated into solid-liquid by a conventional solid-liquid separator.

The water to be treated introduced into the drum 30 passes through the filter net 39 to filter out foreign substances. The filtered water passing through the filter net (39) is discharged to the lower part of the drum (30). The filtered water discharged to the bottom of the drum 30 may be sent back to the fish farm or sent to an additional water treatment facility. Water from fish farms can be applied as water for treatment. In addition, various types of wastewater can be applied as water to be treated. Although not shown, a water to be treated supply pipe to which the water to be treated is supplied in order to introduce the water to be treated into the drum may be located in the front direction of the drum. The water to be treated discharged from the water supply pipe to be treated may be introduced into the drum through the opening 9 formed in the front surface of the drum 30 .

A filtered water collecting tank for collecting the filtered water that has passed through the filter network 39 may be installed below the drum 30 . The filtered water collected in the filtered water collection tank can be sent to the fish farm using a pump.

As described above, the drum screen for water treatment of the present invention is used to improve the water quality of the fish farm. In addition, it goes without saying that the drum screen for water treatment of the present invention can be used as a filter for first filtering out foreign substances in various types of water to be treated.

The main part of the drum screen for water treatment according to another example of the present invention is shown in FIG.

The types and characteristics of foreign substances vary greatly depending on the type of water to be treated. In particular, in the case of an adhesive foreign substance, it may not be easy to detach from the filter net when the washing water is sprayed. For this purpose, it is preferable to further include a desorption promoting unit that promotes desorption of foreign substances when the washing water is sprayed.

The desorption promoting unit may promote the desorption of foreign substances by, for example, colliding with the filter net and applying vibration to the filter net when the washing water is sprayed into the drum.

Referring to FIG. 5 , the desorption promoting unit includes a first connection pipe 71 branched from the cleaning pipe 50 , a cylindrical chamber 73 to which the first connection pipe 71 is connected to one side, and a chamber 73 . A second connection pipe 75 connected to the other side of the tubing and extending to the washing pipe 50, a water wheel installed in the chamber 73 and rotating by washing water passing through the chamber 73, and passing through the chamber 73 A rotation shaft 77 coupled to the water wheel and a striking band 79 that collides with the filter network 39 while being coupled to the rotation shaft 77 and rotating.

The chamber 73 has a hollow cylindrical shape. An inlet is formed at one side of the chamber 73 , and an outlet is formed at the other side of the chamber 73 . A first connecting pipe 71 is connected to the inlet of the chamber 73 , and a second connecting pipe 75 is connected to the outlet of the chamber 73 . Accordingly, some of the washing water flowing along the washing pipe 50 flows into the chamber 73 through the first connection pipe 71 , and the washing water flowing into the chamber 73 is washed again through the second connection pipe 75 . is introduced into the pipe 50 .

The rotating shaft 77 is installed on one side of the chamber 73 to pass through the other side. The aberration is coupled to the rotation shaft 77 located inside the chamber 73 . Although not shown, the aberration consists of a plurality of blades formed at regular intervals on the outer circumferential surface of the rotation shaft 77 . When the washing water passes through the inside of the chamber 73 at a constant speed, the water wheel installed inside the chamber 73 is rotated.

The striking band 79 is formed of a flexible material. For example, it may be formed of a rubber material having a large specific gravity. The striking band 79 is installed at one end of the rotation shaft 77 exposed to the outside of the chamber 73 . One or more striking bands 79 may be installed on the rotating shaft 77 . In the illustrated example, three striking bands are installed at regular intervals on the rotating shaft 77 . When the rotating shaft 77 rotates by the washing water passing through the chamber 73 , the striking band 79 also rotates, and accordingly, the striking band 79 strikes the filter net 39 . Since the striking band 79 applies a physical vibration to the filter net 39, it is possible to promote the detachment of foreign substances attached to the filter net.

And, as shown in the figure, two or more chambers are installed in plurality to apply a blow to various parts of the filter network, of course.

As mentioned above, although the present invention has been described with reference to one embodiment, it will be understood that this is only exemplary, and that various modifications and equivalent embodiments are possible therefrom by those skilled in the art. Accordingly, the true protection scope of the present invention should be defined only by the appended claims.

10: support frame 20: fixed shaft
30: drum 39: filter net
40: rotation driving unit 41: motor
50: washing pipe 60: collection hopper
65: support pipe

Claims (3)

delete delete a support frame;
a fixed shaft of a hollow structure fixed to the support frame and having an empty interior;
a drum rotatably coupled to the fixed shaft, the water to be treated flows into the inside, and a filter net is mounted on the outer circumferential surface;
a rotation driving unit for rotating the drum;
a washing pipe installed above the drum to spray washing water from the outside to the inside of the drum to remove foreign substances attached to the filter net;
a collection hopper installed inside the drum to receive foreign substances detached from the filter net by the washing water;
and a support pipe connecting the fixed shaft and the collection hopper to form a passage through which the foreign material flows into the fixed shaft; and
When the washing water is sprayed into the drum, it collides with the filter net and a desorption promoting unit for applying vibration to the filter net; further comprising:
The detachment promoting unit includes a first connection pipe branched from the washing pipe, a cylindrical chamber to which the first connection pipe is connected to one side, and a second connection pipe connected to the other side of the chamber and extending to the washing pipe; A water wheel installed in the chamber and rotated by the washing water passing through the chamber, a rotating shaft passing through the chamber and coupled to the water wheel, and a striking band that is coupled to the rotating shaft and collides with the filter network while rotating Drum screen for water treatment.

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