JP2015054320A - Drum screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drum screen that enables smoother rotation of a rotating drum, easier reduction of frictional force between an opening inner peripheral surface of the rotating drum and a reinforcing fabric coming into contact with the opening inner peripheral surface, easier reduction of noise generated during rotation, large improvement water sealing efficiency of a water sealing portion, drastic improvement of durability of the water sealing portion and further improvement of the durability of the water sealing portion by alternately laminating the reinforcing fabric and an elastic sheet.SOLUTION: A drum screen includes: a rotating drum installed within a frame and having an opening that is formed on the other side and inside of which sewage water flows in with one end closed; a center shaft rotatably supporting the rotating drum; a sludge receiver located within the rotating drum; and an injecting portion for injecting filtered water to the rotating drum. The drum screen further includes a water sealing portion that has a reinforcing fabric installed on a frame inner peripheral surface facing the opening of the rotating drum to come into contact with the inner peripheral surface of the opening of the rotating drum and an elastic sheet arranged on the upper side of the reinforcing fabric and that prevents the sewage water flowing into the rotating drum and the filtered water within the frame from mixing with each other.

Description

  According to the present invention, when moisture is absorbed by the reinforcing fabric in contact with the inner peripheral surface of the opening of the rotating drum, the rotating drum is further formed by a water film formed between the reinforcing fabric and the inner peripheral surface of the opening of the rotating drum. Of course, not only can it rotate smoothly, but also the frictional force between the inner peripheral surface of the rotating drum that is rotating and the reinforcing fabric in contact with the inner peripheral surface of the opening can be reduced more easily. In addition, the noise generated during the process of rotating the rotating drum can be reduced more easily, and the water film not only can greatly improve the watertight efficiency of the watertight part, The durability of the watertight portion can be greatly improved by the elastic sheet provided on the upper part of the reinforcing fabric, and at the same time, the reinforcing fabric and the elastic sheet are alternately stacked one after another. If the durability of the watertight section is related to a drum screen which can be improved more greatly.

  In general, circulating filtration type fish farming is a method that purifies and reuses the water in the breeding pond, so that the fish can be cultured at high density and the temperature of the breeding water is raised using a boiler or the like even in winter when the water temperature is low. Therefore, although it costs a lot of money, there is an advantage of not using much water for breeding.

  However, such a circulating filtration type fish farm has a drawback that the rate of deterioration of water quality due to filth such as excrement is high and its level is severe because the total amount of water is smaller than the amount of fish accommodated.

  Therefore, if the sludge such as excrement and remaining food is not removed as soon as possible, the physiological function of the fish is weakened and causes disease.

  Sludge generated in fish farms can immediately damage fish gills or be converted to toxic dissolved substances such as ammonia and nitrous acid to increase the load on the physical or biological filtration tank in the latter part of the circulation filtration. It is important to separate from the breeding water in the fish farm as quickly as possible, because it will increase the facility and operating costs and cause the clogging of the microbial filter material to increase the consumption of dissolved oxygen. It is.

  The most commonly used methods for removing sludge generated in fish farms are drum screens, sedimentation methods, sand filters, protein schemas, etc., and in recent years, as shown in FIG. A drum screen used for filtering sludge such as fish excrement, fish secretions and feed residue in a filtration type fish farm has been proposed in Patent Document 1, and particularly in Patent Document 1 (Drum Screen). A sealing plate is installed on the partition wall of the support frame so as to overlap the inner surface of the opening of the rotary drum, and the gap between the partition wall and the opening is closed, so that the sewage does not pass through the screen and the filtered water of the simple water tank. It is designed to prevent mixing.

  However, since the sealing plate is made of a rubber material, the durability of the sealing plate is reduced by a frictional force generated between the inner surface of the opening of the rotating drum that rotates forward or backward and the sealing plate made of the rubber material. At the same time, the watertight efficiency of the sealing plate is lowered, and as a result, there is a problem that noise is generated during the forward and reverse rotation of the rotating drum.

  Patent Document 1 is used to primarily filter sludge such as fish excrement, fish secretions, and feed residue in a circulating filtration fish farm, and in particular, sewage and filtered water using a sealing plate. It is designed to prevent mixing.

  However, since the sealing plate of Patent Document 1 is a rubber material, there is a problem that durability is lowered due to frictional force and watertightness efficiency is lowered. On the other hand, the watertight part of the present invention may be deteriorated in durability due to frictional force. Therefore, it is possible to easily prevent the watertight efficiency from being lowered.

  And patent document 2 tried to purify drainage by removing fish meal, residual mud, etc. contained in drainage discharged from a fish farm.

  However, Patent Document 2 not only shows no components corresponding to the watertight part of the present invention, but also has a problem that the structure is complicated and the installation cost is high compared to the present invention.

Korean Patent Registration No. 10-100009439 JP 08-024525

  The present invention has been made in order to solve the above-described problems, and when moisture is absorbed by the reinforcing fabric in contact with the inner peripheral surface of the opening of the rotating drum, the inner surface of the opening of the rotating fabric and the reinforcing fabric. The rotating drum can be rotated more smoothly by the water film formed between the rotating inner drum and the reinforcing fabric in contact with the inner peripheral surface of the rotating drum. Of course, it is possible to more easily reduce the frictional force between the rotating drum and the noise generated during the process of rotating the rotary drum. Not only can the watertight efficiency of the portion be further improved, but also the durability of the watertight portion can be greatly improved by the elastic sheet provided on the upper part of the reinforced fabric. If the reinforcing fabric elastic sheet are sequentially stacked alternately with each other, that the durability of the watertight section is to provide a drum screen more can be improved more greatly as its purpose.

  In order to achieve the above object, the present invention is provided with a frame; the frame is provided in the frame, rotates by receiving a rotational force from a driving unit, and sewage flows into the other side with one side closed. A rotating drum having an opening; a central shaft that rotatably supports the rotating drum; a sludge receiver provided in the rotating drum; and an injection unit that injects filtered water to the rotating drum. A drum screen comprising: a reinforcing fabric provided on an inner peripheral surface of the frame facing the opening of the rotating drum; the reinforcing fabric contacting the inner peripheral surface of the opening of the rotating drum; and an elastic sheet provided on an upper portion of the reinforcing fabric. The drum screen is provided with a watertight portion that prevents sewage flowing into the rotating drum from being mixed with filtered water inside the frame.

  A plurality of the reinforcing woven fabric and the elastic sheet of the watertight portion may be alternately stacked sequentially from the lower side of the watertight portion to the upper side of the watertight portion.

  A screen can be bonded and fixed to a screen net fixed to the rotating drum.

  In the drum screen of the present invention, an insertion groove is formed in an upper portion of the screen mesh fixed to the rotating drum, and the insertion is performed together with the screen in a state of being positioned on the upper surface of the screen in the insertion groove of the screen mesh. An insertion member inserted into the groove can be provided.

  The drum screen of the present invention includes a support bracket that supports the injection unit in a state in which the vertical angle of the injection nozzle formed in the lower portion of the injection unit is adjusted, and the vertical angle of the injection nozzle is adjusted. The support bracket includes an angle adjustment unit that fixes the injection unit to the support bracket in a state, and the angle adjustment unit includes a fixing plate formed on one side surface of the support bracket and the other side surface of the support bracket; A U-bolt that accommodates the injection part inside and that penetrates the fixing plate in a state where the injection part is in close contact with the fixing plate; and a screw connection to the U-bolt portion that is in a state of passing through the fixing plate And a nut member provided on the fixing plate in a state of being formed.

  The drum screen of the present invention includes a rotating member that is provided in the rotating drum and that rotates the rotating drum by receiving the rotational force of the driving unit, and the rotating member is fixed to one side of the rotating drum. A housing that receives the rotational force from the driving unit in a state of being rotated and rotates the rotating drum; and a housing member that is separably housed inside one side of the housing.

  A screw hole is formed in the surface of the housing member of the rotating drum, and is screwed to the screw hole of the housing member to separate the housing member from one side inside the housing. A separating member formed longer than the length can be provided.

  The rotating member may further include a slide bearing having an outer diameter smaller than an inner diameter of the housing member so as to be housed inside the housing member in a state of being coupled to one side of the central shaft. it can.

  The rotating member may further include a rotating force transmitting member that transmits a rotating force of the driving unit to the housing.

  In addition, the drum screen of the present invention may include another rotating member on the other side of the rotating drum so as to be symmetric with the rotating member.

  The present invention is formed between the reinforcing fabric and the opening inner peripheral surface of the rotating drum when moisture is absorbed by the reinforcing fabric in contact with the inner peripheral surface of the rotating drum that rotates by receiving rotational force from the drive unit. The water film not only allows the rotating drum to rotate more smoothly, but also increases the frictional force between the inner peripheral surface of the rotating drum and the reinforcing fabric in contact with the inner peripheral surface of the rotating drum. Needless to say, the noise generated during the process of rotating the rotating drum can be reduced more easily as well as the inner peripheral surface of the opening of the rotating drum and the water film. According to the elastic sheet provided at the upper part of the reinforcing fabric, not only can the watertight efficiency of the watertight portion including the reinforcing fabric in contact with the inner peripheral surface of the opening be further greatly improved. The durability of the watertight portion can be significantly improved, and at the same time, a plurality of the reinforcing fabric and the elastic sheet are alternately stacked on the lower side of the watertight portion and sequentially on the upper side of the watertight portion. There is an effect that the durability of the watertight portion can be further improved.

1 is a cross-sectional view schematically illustrating a drum screen according to an embodiment of the present invention. It is a side view of FIG. FIG. 2 is a perspective view (1) schematically showing a state in which an adhesive layer is formed on a screen net. FIG. 5 is a perspective view (2) schematically showing a state in which an adhesive layer is formed on the screen net. FIG. 5 is a cross-sectional view (1) sequentially illustrating a process of fixing a screen to a screen net by an insertion member. FIG. 6 is a cross-sectional view (2) sequentially illustrating a process of fixing a screen to a screen net by an insertion member. It is an enlarged side view which shows an angle adjustment part roughly. It is sectional drawing about the AA line of FIG. It is sectional drawing which shows a rotation member schematically. It is an exploded sectional view showing a rotation member roughly. FIG. 6 is a cross-sectional view schematically showing a state where the housing member is separated from the housing by the separating member. It is sectional drawing which shows another rotary member schematically. It is an exploded sectional view showing other rotating members roughly. FIG. 6 is a cross-sectional view schematically illustrating a drum screen according to another embodiment of the present invention. FIG. 6 is a cross-sectional view schematically illustrating a drum screen according to still another embodiment of the present invention. It is sectional drawing (1) about the BB line of FIG. It is sectional drawing (2) about the BB line of FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Of course, the scope of rights of the present invention is not limited to the following embodiments, and various modifications may be made by those having ordinary knowledge in the technical field within the scope of the technical gist of the present invention. Can.

  FIG. 1 is a sectional view schematically showing a drum screen according to an embodiment of the present invention, and FIG. 2 is a side view of FIG.

  As shown in FIG. 1, a drum screen according to an embodiment of the present invention is roughly divided into a frame 10 including a simple water tank 100a and a support frame 100b provided inside the simple water tank 100a; A rotating drum 20 provided in the frame 100b, rotated by receiving a rotational force from the driving unit 60, and having an opening 101 through which one side is closed and dirty water flows into the other side; A central shaft 30 that is horizontally fixed to an upper portion of a support frame 100b of the frame 10; a sludge receptacle 40 provided in the rotary drum 20; and filtered water to the rotary drum 20. And an injection unit 50 for injecting.

  On the other side of the support frame 100b opposite to one side of the support frame 100b, a partition wall 100c facing the opening 101 formed on the other side of the rotary drum 20 is formed vertically.

  Since the frame 10, the rotating drum 20, the central shaft 30, the sludge receiver 40, and the injection unit 50 are well-known matters widely known from the above-mentioned Patent Document 1, detailed description thereof will be omitted below.

  However, the drum screen according to the present invention includes a reinforcing fabric 710 and an elastic sheet 720, as shown in FIG. 1, and dirty water that has flowed into the rotary drum 20 and filtered water inside the simple water tank 100 a of the frame 10. Is further provided with a watertight portion 70 for preventing water from being mixed.

  That is, as shown in FIG. 1, the rotating drum 20 has an opening 101 with the side surface on the right side (the above “other side”) of the drawing opening entirely. However, as shown in the drawing, a plurality of columns extending from the rotating shaft to the peripheral surface of the drum are obtained at a position close to the opening 101. Further, the partition wall 100c that separates the unfiltered sewage tank and the filtered water tank at the right end of the figure is omitted according to the opening 101, so that sewage can flow in. However, members such as columns and beams are provided as appropriate. And the watertight part 70 is extended from the edge of the opening 101, and is being fixed from the edge of the extraction part of the partition 100c. That is, the watertight portion 70 extends in an arc shape, and the tip end portion (left end portion in FIG. 1) is in contact with the drum inner peripheral surface along the edge of the opening 101.

  The reinforcing fabric 710 is provided on the inner peripheral surface of the partition wall 100 c of the support frame 100 b of the frame 10 that faces the opening 101 of the rotary drum 20.

  More specifically, the partition wall 100c is formed with a skirt portion 100d extending facing the edge of the opening 101 of the rotary drum 20. That is, there is provided a dam-like skirt portion 100d that extends in an arc shape along the edge of the opening 101 and protrudes from the partition wall 100c to the left in the drawing with a predetermined protruding dimension. The protruding height of the skirt portion 100d is slightly smaller than the distance between the rotary drum 20 and the partition wall 100c, and a slight gap (for example, 1 cm or less) is formed between the protruding end of the skirt portion 100d and the edge of the opening 101. It is formed. Then, this gap is fixed to the skirt portion 100d, and the watertight portion 70 extending therefrom is closed. The partition 100c includes a fixing plate 100e attached to an upper portion of the watertight portion 70 in a state where the watertight portion 70 is attached to an upper surface of the skirt portion 100d; the skirt portion 100d, the watertight portion 70, and The watertight portion 70 is screwed by a screw pin or a fixing bolt 100f and a screw pin passing through the fixing plate 100e in a vertical direction, or by a nut 100g fixed to the upper surface of the fixing plate 100e in close contact with the screw 100f. Can be installed more easily and stably.

  One side of the reinforcing fabric 710 facing the inner peripheral surface of the opening 101 of the rotating drum 20 is in contact with the inner peripheral surface of the opening 101 of the rotating drum 20 while being in close contact with the inner peripheral surface of the opening 101 of the rotating drum 20. It becomes like this.

  The reinforcing fabric 710 can be made of various materials, and can be made of polyester fiber (particularly, polyethylene terephthalate fiber) that is particularly excellent in strength, has a low coefficient of friction, and is resistant to wear. However, nylon fiber or the like may be used.

  The elastic sheet 720 may be bonded to the upper portion of the reinforcing fabric 710 with a bond (for example, a rubber paste obtained by dissolving nitrile rubber or chloropyrene rubber with a solvent, a reactive curable adhesive, or an adhesive).

  The elastic sheet 720 can be made of various materials, and can be made of PVC (Polyvinyl chloride) having excellent flexibility and elasticity. PVC is soft PVC with a non-leading plasticizer such as polymer plasticizer added, and typically has a Shore A hardness of 50-100. However, resin elastomers such as polyester elastomer and ethylene propylene rubber (EPDM) can be used depending on circumstances.

  When moisture is absorbed by the reinforcing fabric 701 in contact with the inner peripheral surface of the opening 101 of the rotating drum 20 that rotates by receiving rotational force from the driving unit 60, the reinforcing fabric 701 and the opening 101 of the rotating drum 20 are Not only can the rotating drum 20 rotate more smoothly by the water film formed between the inner peripheral surface and the inner peripheral surface of the opening 101 of the rotating drum 20 and the inner periphery of the opening 101. Of course, the frictional force between the reinforcing fabrics 701 in contact with the surface can be more easily reduced, and the noise generated during the rotation of the rotary drum 20 can also be more easily reduced.

  In addition, the watertight efficiency of the watertight portion 70 including the reinforcing fabric 701 contacting the inner peripheral surface of the opening 101 of the rotating drum 20 and the inner peripheral surface of the opening 101 by the water film is further improved. In addition, the durability of the watertight part 70 can be significantly improved by the elastic sheet 720 provided on the upper portion of the reinforcing fabric 710.

  Next, in order to further improve the durability of the watertight portion 70, the reinforcing fabric 710 and the elastic sheet 720 are in the order of the reinforcing fabric 710 → the elastic sheet 720 → the reinforcing fabric 710 → the elastic sheet 720. It is preferable that a plurality of layers are alternately stacked sequentially from the lower side of the watertight portion 70 to the upper side of the watertight portion 70. In the example shown in FIG. 1, each of the two layers of the reinforcing fabric 710 and the elastic sheet 720 are laminated. For example, each of the three layers or each of the four layers can be laminated.

  Next, as shown in FIGS. 1 and 2, a protective cover 100h for protecting the rotary drum 20 is provided on the upper side of the support frame 100b of the frame 10, and the injection unit 50 is provided above the protective cover 100h. Are connected and installed.

  A spray water blocking film 100i for preventing the filtered water sprayed from the spray unit 50 from splashing outward of the rotating drum 20 is installed on the front front side of the protective cover 100h. Not only can the filtered water splash outside the rotating drum 20 and the surrounding ground of the simple water tank 100a of the frame 10 form an ice plate, but also the filtered water can be saved. become.

  Since the protective cover 100h and the squirt water blocking membrane 100i are also well-known matters widely known from Patent Document 1, detailed description thereof will be omitted below.

  However, as shown in FIG. 2 in particular, on the front surface of the protective cover 100h, there is an inclined surface 100j that is inclined upward and upward from the lower side of the protective cover 100h toward the upper side of the protective cover 100h. Is preferably formed.

  Since the inclined surface 100j can further increase the separation distance between the ejection unit 50 and the ejection water blocking film 100i, the filtered water is more likely to be scattered outside the rotating drum 20. It can be prevented with higher efficiency.

  3 and 4 are perspective views schematically showing a state in which the adhesive layer G is formed on the screen net 220. FIG.

  Next, as shown in FIGS. 3 and 4, an adhesive layer G may be applied to the surface of the screen net 220 fixed to the rotating drum 20. The screen mesh 220 can be provided by a metal material such as stainless steel, or a resin material such as polypropylene, nylon, or various engineering resins.

  More specifically, as shown in FIG. 4, the screen net 220 fixed to the rotary drum 20 includes a rectangular plate-like support body 221 having a plurality of through holes; and an upper surface of the support body 221. A fine porous screen 222 to be bonded and fixed; a sealing pad 223 attached to the lower edge of the support 221; and the screen network 220 is rotated by the fixing member 224 shown in FIG. It can be fixed to the drum 20.

  The rectangular plate-like support 221, the microporous screen 222, the sealing pad 223, and the fixing member 224 are also well-known matters widely known from Japanese Patent Application Laid-Open No. 2003-260688, and therefore detailed description thereof will be omitted below. To do.

In particular, in order to more efficiently prevent the floating phenomenon from occurring in the microporous screen 222 fixed to the upper surface of the rectangular plate-like support 221 of the screen mesh 220, As shown in FIG. 4, the adhesive layer G including the first adhesive layer G ₁ and the second adhesive layer G ₂ can be applied to the upper surface of the rectangular plate-like support 221. .

Of the upper surface of the support 221 from the upper one side rectangular plate of the first adhesive layer G ₁ is a rectangular plate shape of the support 221, in the other direction, to be applied to the left and right at a constant length it can.

The first adhesive layer G ₁ applied to the left and right at a fixed length from the one side of the upper surface of the rectangular plate-like support 221 toward the other side of the upper surface of the rectangular plate-like support 221 is the rectangular plate-like shape. The rectangular plate-like support body 221 may be disposed forward and backward at a predetermined interval from the front side of the support body 221.

The second adhesive layer G ₂ is formed on the upper surface intermediate portion of the rectangular plate-like support body 221 from the front side of the upper surface middle portion of the rectangular plate-like support body 221 in a state orthogonal to the first adhesive layer G ₁ . It can be applied back and forth at a certain length in the back.

  5 and 6 are cross-sectional views sequentially illustrating a process in which the screen 222 is fixed to the screen net 220 by the insertion member 80.

  Alternatively, the microporous screen 222 is more easily fixed to the upper surface of the rectangular plate-like support 221 of the screen mesh 220 and the rectangular plate-like shape of the screen mesh 220 is used without using an adhesive or the like. In order to more efficiently prevent the floating phenomenon from occurring in the fine porous screen 222 fixed to the upper surface of the support 221, it is fixed to the rotating drum 20 as shown in FIGS. An insertion groove 220a is formed on the upper surface of the rectangular plate-like support 221 of the screen mesh 220 to be recessed from the upper portion of the support 221 below the support 221 at a certain depth. The insertion member 80 having flexibility and elasticity together with the screen 222 is inserted into the insertion groove 220a of the support 221. Can.

As shown in FIG. 5, the insertion groove 220a can be formed in a circular shape with an open upper middle as shown in FIG. 5, and in the illustrated example, the cross section is larger than a semicircle and an overhang portion is formed. . The insertion groove 220a is fixed to the top rear side of the support 221 from the top front side a rectangular plate shape of rectangular plate of the support 221 while being formed to extend in the left and right as in the first adhesive layer G ₁ A first insertion groove (not shown) disposed at the front and back at an interval; and the first insertion groove (not shown) orthogonal to the first insertion groove (not shown) in communication with the first insertion groove (not shown). A second insertion extending forward and backward with a certain length from the front side intermediate portion front side of the rectangular plate-like support body 221 to the rear side of the upper surface intermediate portion of the rectangular plate-like support body 221 like the second adhesive layer G ₂ And a groove (not shown).

  The insertion member 80 may be formed in a circular shape as shown in FIG. However, an elliptical shape or a slightly asymmetrical tear shape may be used. In addition, preferably, an overhang portion having a smooth cross section is formed.

  The insertion member 80 may be inserted and fixed in the insertion groove 220a by an operator together with the screen 222 while being positioned on the upper surface of the screen 222.

  The insertion member 80 is formed in a left-right length corresponding to the first insertion groove (not shown), and is inserted into the first insertion groove (not shown); A second insertion member (not shown) formed in a longitudinal length corresponding to the second insertion groove (not shown) and inserted into the second insertion groove (not shown). .

  Among the first insertion member (not shown) and the second insertion member (not shown) inserted in the first insertion groove (not shown) and the second insertion groove (not shown), respectively. The first insertion member (not shown) or the second insertion member (not shown) located at the intersection of the first insertion groove (not shown) and the second insertion groove (not shown). ) The site can be incised.

  7 is an enlarged side view schematically showing the angle adjusting portion 91, and FIG. 8 is a cross-sectional view taken along the line AA of FIG.

  Next, a support bracket 90 that supports the injection unit 50 in a state where the vertical angle of the injection nozzle (511 in FIG. 8) formed in the lower part of the injection unit 50 is adjusted may be further provided.

  As shown in FIG. 1, the support bracket 90 may be formed to extend from one side of the rotary drum 20 to the left and right sides with a certain length in the other direction of the rotary drum 20. One side and the other side of the support bracket 90 may be bent below the support bracket 90, respectively.

  The support bracket 90 that supports the spray unit 50 may be connected to an upper portion of the protective cover 100h by a hinge. Since this is also a well-known matter widely known from Patent Document 1, detailed description thereof will be omitted below.

  One side of the injection unit 50 and the other side of the injection unit 50, which can be made of pipes, hoses, etc., can penetrate horizontally through one side of the support bracket 90 and the other side of the support bracket 90, respectively. In this way, the tubular injection section 50 arranged horizontally can be rotated around its axis to adjust the injection angle of the nozzle 511 extending in the radial direction of the pipe.

  In particular, an angle adjustment unit 91 for fixing the injection unit 50 to the support bracket 90 in a state where the vertical angle of the injection nozzle 511 is adjusted is provided on one side surface of the support bracket 90 and the other side surface of the support bracket 90, respectively. Can be done.

  As shown in FIG. 7, the angle adjusting unit 91 may include a fixing plate 911, a U bolt 912, and a nut member 913.

  The fixing plate 911 may be integrally formed horizontally on one side surface of the support bracket 90 and the other side surface of the support bracket 90 so as to be positioned above the injection unit 50.

  In the state in which the injection part 50 is accommodated inside the U bolt 912, the upper front side of the U bolt 912 and the upper rear side of the U bolt 912 are the front side of the fixing plate 911 and the rear side of the fixing plate 911, respectively. It can penetrate vertically.

  The nut member 913 is screw-coupled to an upper front portion of the U bolt 912 and an upper rear portion of the U bolt 912 vertically passing through the front side of the fixing plate 911 and the rear side of the fixing plate 911, respectively. And may be provided in close contact with the upper surface of the fixing plate 911.

  The operator separates the nut member 913 from the upper front portion of the U bolt 912 and the upper rear portion of the U bolt 912, and then lowers the U bolt 912 below the fixing plate 911. As shown in FIG. 8, the vertical angle of the injection nozzle 511 of the injection unit 50 can be adjusted by rotating the injection unit 50 forward or backward.

  In a state where the vertical angle of the injection nozzle 511 of the injection unit 50 is adjusted, the operator further raises the U bolt 912 above the fixed plate 911 so that the upper side of the injection unit 50 is the lower surface of the fixed plate 911. In this state, the nut member 913 can be further screwed to the upper front portion of the U bolt 912 and the upper rear portion of the U bolt 912, respectively.

  FIG. 9 is a sectional view schematically showing the rotating member 200, and FIG. 10 is an exploded sectional view schematically showing the rotating member 200.

  Next, a rotating member 200 that is provided in the rotating drum 20 and that rotates the rotating drum 20 by receiving the rotational force of the driving unit 60 may be provided.

  As shown in FIG. 9, the driving unit 60 includes a driving motor 610; a rotating body 620 that is axially coupled to the driving shaft 611 of the driving motor 610 and rotates forward or backward together with the driving shaft 611. Comprising.

  The rotator 620 may include a pulley, a sprocket, a timing gear, and the like.

  Since the driving unit 60 is also a well-known matter widely known from Patent Document 1, detailed description thereof will be omitted below.

  In particular, the rotating body 620 and the rotating member 200 may be made of an engineering plastic having excellent corrosion resistance so that the rotating body 620 and the rotating member 200 are not oxidized due to salinity.

  As shown in FIGS. 9 and 10, the rotating member 200 is roughly divided into a housing 201 and a housing member 202.

  As shown in FIG. 10, the housing 201 may include an annular fixing plate 201a, an annular protrusion 201b, and an annular protrusion 201c.

  The annular fixed plate 201a can be fixed to the one-side intermediate portion of the rotary drum 20 with a bolt so as to be separable.

  The annular protrusion 201b may protrude from one side of the annular fixing plate 201a on one side of the annular fixing plate 201a.

  The outer diameter of the annular protrusion 201b may be smaller than the outer diameter of the annular fixing plate 201a.

  A through hole 201d may be formed at the center of the annular fixing plate 201a and the center of the annular protrusion 201b.

  An accommodation recess 201e that communicates with the through-hole 201d is formed on one side of the annular protrusion 201b so as to extend to one side of the annular protrusion 201b at a certain depth in the other direction of the annular protrusion 201b. Can be formed.

  The annular protrusion 201c may protrude outwardly from one side of the annular protrusion 201b on one side surface of the annular protrusion 201b located around the accommodation recess 201e of the annular protrusion 201b.

  The housing 201 including an annular fixing plate 201a, an annular protrusion 201b, and an annular protrusion 201c generates forward and reverse rotational forces of the rotating body 620 that rotates forward or backward together with the drive shaft 611 of the drive unit 60. In response, the rotary drum 20 is rotated forward or reverse.

  The receiving member 202 may be formed in an annular shape.

  The housing member 202 is formed in one side inside the annular protrusion 201b so as to be positioned inside the annular protrusion 201c formed on one side surface of the annular protrusion 201b of the housing 201. It can be detachably housed within.

  FIG. 11 is a cross-sectional view schematically showing a state in which the housing member 202 is separated from the housing 201 by the separating member 300.

  Next, as shown in FIG. 11, the surface of the housing member 202 is positioned on the outer side of the housing member 202 of the rotating member 200 from one side of the housing member 202 to the other side of the housing member 202. Screw holes 202a extending in the left and right directions with a certain length in the direction can be formed at equal intervals.

  In order to more easily separate the housing member 202 from the housing recess 201e formed inside one side of the annular protrusion 201b of the housing 201 of the rotating member 200, the housing member 202 is separated from the housing recess 201e. A separation member 300, which can be a bolt or the like, can be screwed into the screw hole 202 a.

  The left and right length from one side of the separation member 300 to the other side of the separation member 300, which can be made of a bolt or the like, is longer than the left and right length from one side of the screw hole 202a to the other side of the screw hole 202a. Can.

An operator can screw the separation member 300 into the screw hole 202a of the housing member 202 by rotating the separation member 300 in the forward direction with a tool such as a spanner.
The other side of the separation member 300, which is opposite to the one side of the separation member 300 screwed into the screw hole 202 a of the accommodation member 202, is the accommodation recess 201 e of the annular protrusion 201 b of the housing 201 of the rotating member 200. When an operator rotates the separation member 300 in a positive direction more continuously in a state where it is in contact with the other inner peripheral surface of the accommodation recess 201e that is the opposite side of the one side, the accommodation member 202 is separated from the separation member 300. The separation member 300 moves from one side to the other side and can be separated from one side inside the housing 201 to one side outside the housing 201.

  Next, as shown in FIGS. 9 and 10, the rotating member 200 further includes a sliding bearing 203 in order to allow the rotating drum 20 to rotate forward or backward more smoothly without noise. Can comprise.

  In order to prevent the sliding bearing 203 from being oxidized due to saltiness, the sliding bearing 203 may be made of various materials such as stainless steel or ceramic material having excellent corrosion resistance.

  The outer diameter of the other side of the sliding bearing 203 may be smaller than the inner diameter of the annular housing member 202 so that the other side of the sliding bearing 203 is accommodated inside the annular housing member 202.

  The outer diameter of one side of the sliding bearing 203 may be larger than the inner diameter of the annular housing member 202 such that one side of the sliding bearing 203 is exposed to the outside of the annular housing member 202. .

  One side of the central shaft 30 can pass through the through hole 201d of the housing 201, the housing recess 201e, and the central portion of the sliding bearing 203 sequentially and horizontally.

  Next, as shown in FIG. 9, the rotating member 200 may further include a rotational force transmitting member 204 that may include a pulley, a sprocket, a timing gear, and the like.

  A portion of the rotational force transmitting member 204 around the annular protrusion 201c of the housing 201 can be detachably fixed to one side of the annular protrusion 201b of the housing 201.

  In order to transmit the forward / reverse rotational force of the rotating body 620 of the driving unit 60 to the rotational force transmitting member 204, the driving unit 60 has an upper side applied to the outer peripheral surface of the rotating body 620, and the rotational force transmitting member 204 The lower side can further include a barb member 630 that can comprise a belt, chain, timing belt, or the like.

  Due to the hook member 630, the rotational force transmission member 204 receives forward and reverse rotational forces of the driving unit 60 and rotates forward and backward. At this time, the housing 201 also receives forward / reverse rotational force from the rotational force transmitting member 204 to rotate forward or backward to rotate the rotary drum 20 forward or backward.

  FIG. 12 is a sectional view schematically showing another rotating member 200, and FIG. 13 is an exploded sectional view schematically showing another rotating member 200.

  Next, as shown in FIGS. 12 and 13, the other rotating member 200 may be provided at the other intermediate portion of the rotating drum 20 in a state symmetrical to the rotating member 200 in the left-right direction.

  The other rotating member 200 may include the housing 201, the housing member 202, and the sliding bearing 203.

  The other side of the central shaft 30 can pass through the through hole 201d of the housing 201 of the other rotating member 200, the housing recess 201e, and the central part of the slide bearing 203 in order horizontally.

  Since the rotating member 200 provided on one side of the rotating drum 20 is made of an engineering plastic having excellent corrosion resistance, the rotating member 200 is of course not oxidized due to salinity. During the process in which the rotating drum 20 is rotated by the rotating member 200 by the sliding bearing 203 which can be easily separated from the rotating drum 20 and can be replaced or repaired. Needless to say, it is possible to more easily prevent the generation of sound, and it is not necessary to apply lubricating oil to the rotating member 200 for the smooth rotation of the rotating drum 20.

  FIG. 14 is a cross-sectional view schematically illustrating a drum screen according to another embodiment of the present invention.

  Next, a drum screen according to another embodiment of the present invention is configured in the same manner as in one embodiment, but the frame 10 may be formed in a square box shape as shown in FIG. It can be composed of only the frame 100b.

  Filtrated water can be stored in the support frame 100 b, and sewage from the fish farm can flow into the rotating drum 20 through the opening 101 of the rotating drum 20.

  FIG. 15 is a cross-sectional view schematically illustrating a drum screen according to still another embodiment of the present invention.

  Next, a drum screen according to another embodiment of the present invention is configured in the same manner as the other embodiments, but the support frame 100b is not shown in the drawing, but is immersed in a water channel of a fish farm. Can be installed.

  A discharge port E and an inflow port I can be formed on one side of the support frame 100b and the other side of the support frame 100b, respectively, which can be formed in a square box shape, and the like. After the water flows into the support frame 100b through the inlet I, it can be discharged to one side outside the support frame 100b through the discharge port E.

  16 and 17 are cross-sectional views taken along line BB in FIG.

  Next, a cleaning drain port M may be formed on the other side of the bottom plate of the simple water tank 100a, which is the opposite side of the bottom plate of the simple water tank 100a of the frame 10 according to an embodiment of the present invention.

  As shown in FIG. 16, the cleaning drain M may be formed to be biased toward the other side of the bottom plate of the simple water tank 100 a in a state of being removed from the center of the other side of the bottom plate of the simple water tank 100 a.

  Alternatively, as shown in FIG. 17, the cleaning drain M may be formed at the center of the other side of the bottom plate of the simple water tank 100a.

  In order to allow the filtered water in the simple water tank 100a to be smoothly drained to the outside of the simple water tank 100a through the cleaning drain port M, as shown in FIG. On the other side of the bottom plate of the simple water tank 100a located around the front side, an inclined surface S that is gradually inclined upward from the cleaning drain port M toward the front side of the simple water tank 100a can be formed.

Alternatively, as shown in FIG. 17, the bottom plate of the simple water tank 100 a located around the front side of the cleaning drain M is gradually upward from the cleaning drain M toward the front side of the simple water tank 100 a. The front inclined surface S ₁ inclined to the rear is formed, and the other side of the bottom plate of the simple water tank 100a located in the vicinity of the rear side of the cleaning drain port M is symmetrical to the front inclined surface S ₁ in the front-rear direction. A rear inclined surface S _{2 that} is gradually upwardly inclined from the drainage port M toward the rear side of the simple water tank 100 a can be formed.

DESCRIPTION OF SYMBOLS 10 Frame 20 Rotating drum 30 Center axis 40 Sludge receptacle 50 Injection part 60 Drive part 70 Watertight part

Claims (10)

Frame 10;
A rotary drum 20 provided in the frame 10, rotated by receiving a rotational force from the driving unit 60, and having an opening 101 through which sewage flows into the other side in a state where one side is closed;
A central shaft 30 for rotatably supporting the rotary drum 20;
A sludge receiver 40 provided in the rotary drum 20;
An injection unit 50 for injecting filtered water to the rotary drum 20;
In a drum screen comprising
A watertight portion 70 for preventing the sewage flowing into the rotary drum 20 and the filtered water outside the rotary drum 20 from being mixed in the frame 10 is an edge of the opening 101 of the rotary drum 20. Is provided on the inner peripheral surface of the frame 10 so as to face and extend,
This watertight part 70 is
A reinforcing fabric 710 in contact with the inner peripheral surface of the opening 101 of the rotary drum 20;
A drum screen including an elastic sheet 720 provided on an upper side of the reinforcing fabric 710.   The reinforcing fabric 710 and the elastic sheet 720 of the watertight portion 70 are alternately stacked one after another in the direction from the lower side of the watertight portion 70 to the upper side of the watertight portion 70. The drum screen according to 1.   The drum screen according to claim 1, wherein a screen 222 is bonded and fixed to a screen net 220 fixed to the rotary drum 20. An insertion groove 220a is formed on an upper part of the screen net 220 fixed to the rotary drum 20.
The insertion member (80) inserted in the insertion groove (220a) together with the screen (222) in a state of being positioned on the upper surface of the screen (222) in the insertion groove (220a) of the screen net (220). Drum screen. A support bracket 90 for supporting the injection unit 50 in a state in which the vertical angle of the injection nozzle 511 formed in the lower part of the injection unit 50 is adjusted;
The support bracket 90 includes an angle adjustment unit 91 that fixes the injection unit 50 to the support bracket 90 in a state where the vertical angle of the injection nozzle 511 is adjusted.
The angle adjusting unit 91 includes:
A fixing plate 911 formed on one side surface of the support bracket 90 and the other side surface of the support bracket 90;
A U-bolt 912 that penetrates the fixing plate 911 in a state in which the injection unit 50 is accommodated inside, and the injection unit 50 is in close contact with the fixing plate 911;
The nut member 913 provided on the fixing plate 911 in a state where the fixing plate 911 is screwed to a portion of the U bolt 912 that is in a state of penetrating the fixing plate 911. Drum screen. A rotating member 200 that is provided in the rotating drum 20 and rotates the rotating drum 20 in response to the rotational force of the driving unit 60;
The rotating member 200 includes:
A housing 201 that receives a rotational force from the driving unit 60 and rotates the rotating drum 20 while being fixed to one side of the rotating drum 20;
The drum screen according to claim 1, further comprising: a housing member that is separably housed inside one side of the housing. A screw hole 202a is formed on the surface of the housing member 202 of the rotary drum 20,
In order to separate the housing member 202 from the inner side of the housing 201, a separating member 300 that is screwed into the screw hole 202a of the housing member 202 and has a left and right length longer than the left and right length of the screw hole 202a. The drum screen according to claim 6, further comprising a drum screen.   The rotating member 200 further includes a sliding bearing 203 having an outer diameter smaller than an inner diameter of the housing member 202 so as to be housed inside the housing member 202 in a state of being coupled to one side of the central shaft 30. The drum screen according to claim 6, further comprising:   The drum screen according to claim 6, wherein the rotating member 200 further includes a rotating force transmitting member 204 that transmits a rotating force of the driving unit 60 to the housing 201.   The drum screen according to claim 6, further comprising the other rotating member 200 on the other side of the rotating drum 200 so as to be symmetric with the rotating member 200.

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