KR20020082047A - Filter press - Google Patents

Abstract

PURPOSE: A filter press is provided to form and separate the slurry into cake having a low moisture content by effectively pressing and dehydrating slurry from sewage and wastewater generated from industries and households. CONSTITUTION: The filter press comprises a head(20); a cylinder bracket(30) which is spaced apart from the head(20); side bars(40) which are installed at both sides of the head(20) and the cylinder bracket(30); a filter assembly(60) which is supported by the side bars(40) so that the filter assembly(60) is installed between the head(20) and the cylinder bracket(30); a filter cloth(90) which is formed in a closed curve so that the filter cloth(90) passes through the filter assembly(60); and a driving means which is connected to the filter cloth(90) to transfer the filter cloth(90) through the filter assembly(60) through which the filter assembly(60) passes, wherein the filter press further comprises a scraper(140) for separating cake adhered onto the filter cloth(90) from the filter cloth(90) when the filter cloth(90) is transferred by the driving means, a cleaning means(120) for cleaning the filter cloth when the filter cloth(90) is transferred by the driving means, and a tension control means(130) for controlling tension of the filter cloth by pulling or releasing the filter cloth, and wherein the filter assembly comprises recesses which are formed at both side surfaces of the filter assembly so that the side bars(40) are positioned on the recesses.

Description

Filter Press {FILTER PRESS}

The present invention relates to a filter press, and more particularly, to a filter press for forming and separating a slurry into a cake having a low water content by effectively pressurizing and dehydrating a slurry from waste water generated in an industrial or household.

Treatment of various sewage and wastewater (hereinafter referred to as wastewater) increased due to urbanization and industrialization is one of the biggest problems in modern society. Such wastewater treatment is purified through a wastewater treatment device, and the slurry generated at this time is dehydrated through a constant dehydration method, and then landfilled or incinerated.

The dehydration method is largely divided into natural and mechanical methods. The natural methods include sand drying method and lagoon method, which have caused problems such as reduction of effective land due to slurry throughput and contamination of groundwater by leachate. The mechanical method using a mechanical device is used. Mechanical methods include vacuum filters using vacuum suction input, filter presses for dehydration by applying pressure to the filter plate, centrifuges using centrifugal force, belt presses using compression pressure of the belt, etc. Dehydrators are being used. Such dewatering devices are developed and used in various forms, and in particular, the use of filter presses is gradually expanded.

In general, the filter press flows the slurry discharged after passing through the wastewater treatment system into a plurality of filter plates which are continuously arranged in a state connected to each other on the same center line and having an H-shaped filter cloth inserted in the center portion, and then The filter plate is pressed by a movable plate moved by driving so that solids contained in the slurry are deposited on the surface of the filter plate, and the filtrate is allowed to flow out.

However, the conventional filter press has a problem that it is very difficult and time-consuming to combine and separate the filter cloth on the filter plate. In addition, the cake sticks in the chamber (in the volume) of the filter plate when the slurry is pressurized and dehydrated, and the cake is stuck in the filter plate after dehydration. There is a problem that must be drawn out. In addition, if the filtration capacity is reduced during the continuous operation, there is a problem that the operator dismantles the filter cloth from the filter plate to clean the filter cloth and attach to the filter plate again.

The present invention is to solve such a problem, the object is to provide a new type of filter press that is easy to use filter cloth. Another object of the present invention is to provide a new type of filter press capable of automatically detaching the cake after the dehydration process is completed. Still another object of the present invention is to provide a new type of filter press capable of automatically realizing cleaning of the filter cloth after the dehydration process is completed.

1 is a front view of a filter press according to a preferred embodiment of the present invention;

FIG. 2 is a perspective view schematically showing the filter press of FIG. 1; FIG.

3 is an enlarged view of a portion of the filter plate to explain the scraper in the filter press of FIG.

4 is a perspective view showing a filter plate and a filter frame according to a preferred embodiment of the present invention;

5 is a perspective view for explaining a configuration for making the transport of the filter cloth in the filter press according to the preferred embodiment of the present invention to be stable.

Explanation of symbols on the main parts of the drawings

10: filter press 20: head

30: cylinder bracket 40: sidebar

50: cradle 60: filter assembly

70 filter plate 80 filter frame

100: driving roller 110: driven roller

120: cleaning means 130: tension adjustment means

140: scraper 150: intermediate roller

According to a feature of the present invention for achieving the above object, the present invention has a form (belt type) of the filter cloth closed curve, it is easy to assemble and disassemble the filter cloth. In addition, once the dehydration process is completed, the cake can be detached while automatically transferring the filter cloth, and the filter cloth can be cleaned by a high pressure washer. The filter press according to the present invention includes a head, a cylinder bracket, a sidebar, a filter assembly, a filter cloth, and a driving means. The cylinder bracket is disposed to be spaced apart from the head, the sidebar is installed on both sides of the head and the cylinder bracket, the filter assembly is supported by the sidebar is installed between the head and the cylinder bracket. The filter cloth is formed in a closed curve shape so as to pass through the filter assembly, and a driving means is coupled to the filter cloth to transfer the filter cloth through the filter assembly in which the filter cloth is spread.

The filter press may further include a scraper for detaching the cake attached to the filter cloth from the filter cloth when the filter cloth is transported by the driving means, and when the filter cloth is transported by the driving means. It may further include a cleaning means for cleaning the filter cloth, it may further include a means for adjusting the tension of the filter cloth by pulling or releasing the filter cloth.

In such a filter press, the filtration assembly may include recesses formed on both sides such that side bars are positioned, and the driving means includes a driving roller driven by a prime mover; A driven roller installed at a position corresponding to the driving roller and supporting the filter cloth while being rolled by the operation of the driving roller; It may include an intermediate roller installed in the filter assembly so that the filter cloth is located in the incoming and outgoing direction. At this time, the filter cloth includes a plurality of holes formed at equal intervals at both ends, and the driving roller is a plurality of projections are inserted into the plurality of holes formed in the filter cloth when the filter cloth is transferred to both ends in order It may include.

In the filter press of the present invention, the filtration assembly comprises: a plurality of filter plates formed with passages through which the filtrate is discharged; The filter plate may include a plurality of filter frames forming a chamber in which the cake remains, and the plurality of filter plates and the filter frames may be alternately installed to form a set one by one. In this case, the filter plate and the filter frame is formed on each side of the filter plate and the filter frame so that the inner side where the filter cloth is located and the outer side where the passage through which the slurry is introduced and the filtrate is discharged is located, and both side ends of the filter cloth are respectively located. It may include a slot.

According to another feature of the present invention for achieving the above object, the present invention comprises a head, a cylinder bracket, a filter assembly, a filter cloth, a drive means. The cylinder bracket is spaced apart from the head, and the filtration assembly is supported by the sidebar and is installed between the head and the cylinder bracket. The filter cloth is formed in a closed curve shape so as to pass through the filter assembly, and a driving means is coupled to the filter cloth to transfer the filter cloth through the filter assembly in which the filter cloth is spread.

In such a filter press, the filtration assembly may be supported by sidebars installed on both sides of the head and the cylinder bracket, and both sides of the cradle are coupled to the head and the cylinder bracket so as to cross the head and the cylinder bracket. A driving roller supported by the cradle and driven by a prime mover; A driven roller supported by the cradle; It may include an intermediate roller installed in the filter assembly so that the filter cloth is located in the incoming and outgoing direction. And cleaning means for cleaning the filter cloth when the filter cloth is supported by the cradle and the filter cloth is transported by the drive roller; Means supported by the cradle for adjusting the tension of the filter cloth; The filter assembly may further include a scraper for removing the cake attached to the filter cloth from the filter cloth to the lower portion of the filter assembly when the filter cloth is transported by the driving means.

In such a filter press, the filter cloth includes reinforcing bars respectively coupled to both ends, and the reinforcing bars may be made of a material selected from the group consisting of synthetic resin, fiber, and leather.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 1 to 5, and the same reference numerals will be given for the components performing the same functions in FIGS. 1 to 5. On the other hand, the illustration of the reinforcing ribs (plates), bolts and screws, holes, washers, nuts, etc. for the coupling and fixing of the main elements in each drawing is briefly or omitted, and those skilled in this field in the basic configuration and installation of the filter press. The illustration of the parts which can be generally known is omitted, and the parts related to the present invention are shown. In particular, there are parts in which the size ratio between the elements is somewhat different or the sizes between the components joined to each other are different. However, the difference in representation of the drawings is easily understood by those skilled in the art. A separate description is omitted.

1 is a front view of a filter press according to a preferred embodiment of the present invention, Figure 2 is a perspective view schematically showing the filter press of FIG.

1 and 2, the filter press 10 according to the present invention provides a filter cloth 90 consisting of a closed curve (closed curve, belt type). This filter cloth 90 may be constructed in one piece using known methods. For example, when the production of the filter press is the same length is applied to the filter cloth 90 is formed integrally, as will be described in detail later, the assembly of the driving roller 100 or driven roller 110 to be adjusted and separated If not, it may be used by connecting both ends in a variety of known methods. Such a filter cloth 90 is used for the filter press 10 having a frame formed of the head 20 and the cylinder bracket 30. The cylinder bracket 30 is spaced apart from the head 20, and a cylinder (generally a hydraulic cylinder) 32 is installed to operate a follower 34 for pressing the filtration assembly 60. . The filter cloth 90 is configured to be supplied with a slurry of waste water, and is installed to pass through the filter assembly 60 configured to discharge the filtrate generated during dehydration to the outside. In this case, the technical details of the supply of the slurry and the discharge of the filtrate may be used because a known method may be omitted. The filter cloth 90 is conveyed through the filter assembly 60 by the drive means (100, 110, 150). That is, when the pressing plate 34 is returned by the cylinder 32 after the dehydration process is completed (1 cycle), the filter cloth 90 is moved over the filter assembly 60 by the driving means 100, 110 and 150. Since the filter press 10 according to the present invention can be installed and separated by integrally configuring the filter cloth 90, it is easy to assemble and disassemble the filter cloth.

As shown in FIG. 4, the filtration assembly 60 of the filter press 10 according to the preferred embodiment of the present invention has a configuration suitable for using the integrated filter cloth 90. Referring to Figure 4, the filter assembly 60 is composed of a filter plate (70) and a filter frame (frame) (80) similar to a general double filtration plate. As shown in FIG. 1, the filter plate 70 and the filter frame 80 have handles 78 caught by sidebars 40 installed in parallel to both sides (left and right sides) of the head 20 and the cylinder bracket 30. , 88) are formed on both sides, respectively. Slurry flows from the outside, and passages 72 and 82 are formed at the corners of the filter plate 70 and the filter frame 80 so as to correspond to each other so that the filtrate generated when the slurry is dehydrated is discharged to the outside. do. Of course, the passages (72, 82) is a passage for the inflow of the slurry (one in the upper right in Figure 4 in this embodiment) or the passage for the discharge of the filtrate (three in Figure 4 in the present embodiment, if necessary) Passage). The filter plate 70 is configured to allow the filtrate to flow into the passage 72 for discharging the filtrate, and the filter frame 80 is formed with a space 81 for forming a chamber in which the residue of the slurry remains. .

The filtration assembly 60 of the filter press 10 according to the present invention has a special technical configuration for using the integrated filter cloth 90 together with the technical configuration of the general double filtration plate as described above. Referring again to FIG. 4, the filter assembly 60 is composed of a filter plate 70 and a filter frame 80 having a basic configuration similar to that of a double filtration plate. Such a filter plate 70 and the filter frame 80 is composed of a plurality, and as shown in Figure 1 are installed alternately to form a set, one each. In this case, the passages 72 and 82 formed in the filter plate 70 and the filter frame 80 are located outside the slots 74 and 84 formed on the respective surfaces of the filter plate 70 and the filter frame 80. It is composed. Such a configuration is such that the filter cloth (90) is to extend to the inside of the passages (72, 82). The slots 74 and 84 are formed at one side of the filter plate 70 and the filter frame 80, as described above, and the filter plate 70 and the filter frame 80 are installed in a pair in a staggered manner. Because. Therefore, the configuration of the slots 74 and 84 may be configured in other forms according to the method of configuring the filtration assembly 60. On the slots 74 and 84, as will be described in detail later, both ends of the filter cloth 90 having the holes 92 for effectively transferring the filter cloth 90 are positioned. This configuration is to obtain a stable sealing effect between the filter plate 70 and the filter frame 80 in which the filter cloth 90 is positioned during the dehydration process. Meanwhile, recesses 76 and 86 are formed at both sides of the filter plate 70 and the filter frame 80, respectively. The recesses 76 and 86 allow the filter cloth 90 to be positioned between the filter plate 70 and the filter mold 80, so that when the filter plate 70 and the filter mold 80 become large, the filter plate ( 70) and the interference with the side bar 40 on which the filter frame 80 is placed.

1 and 2, the filter press 10 according to the preferred embodiment of the present invention has a driving means for conveying the filter cloth (90). This driving means may be configured in various known ways. In this embodiment, the driving means is composed of a driving roller 100, driven roller 110, the intermediate roller 150. The driving roller 100 is driven by a prime mover (generally including a reducer) for generating a rotational force such as an electric motor to generate an operating force for transferring the filter cloth 90, and the driven roller 110 is It is installed at a position corresponding to the driving roller 100 and is rolled by the driving of the driving roller 100 while supporting the filter cloth 90 coming out through the filtering assembly 60. In this embodiment, the driving roller 100 and the driven roller 110 are coupled to both sides of the head 20 and the cylinder bracket 30, and installed to cross the head 20 and the cylinder bracket 30. To be supported by a cradle 50. The intermediate roller 150 is installed on the filter plate 70 and the filter frame 80 so that the filter cloth 90 is located in the incoming and outgoing directions. In this embodiment, the intermediate roller 150 is installed in the lower portion of the filter plate 70, is installed on the upper portion of the filter frame 80, the filter cloth passing through the filter plate 70 and the filter frame 80 ( 90).

As shown in FIG. 5, the filter cloth 90 has holes 92 formed at equal intervals at both ends. In addition, the driving roller 100 has protrusions 102 formed similarly to the sprocket. The protrusions 102 are formed at both ends of the driving roller 100 so as to correspond to the holes 92 formed in the filter cloth 90, and the holes of the filter cloth 90 when the driving roller 100 is driven. And inserted into the (92) sequentially. Through this configuration, the filter cloth 90 is transported without slipping when the filter cloth 90 is transported when the driving roller 100 is operated. In this case, the shapes of the holes 92 may be formed in various forms such as a circle (FIG. 4) or a rectangle (FIGS. 2 and 5). On the other hand, the filter cloth 90 is used because a variety of mesh (mesh) and material according to the type of waste water, if the material of the filter cloth is weak, can be used to combine the reinforcing rods (not shown) on both sides by a known method. . In this embodiment, this reinforcing rod was formed by pressing the urethane to the front and rear of the filter cloth and forming the holes (92). In addition, this reinforcement may be composed of other types of synthetic resins or fibers, leather, and the like.

1 and 2, the filter press 10 according to the preferred embodiment of the present invention is provided with cleaning means 120 for cleaning the filter cloth 90. The cleaning means 120 is sprayed with a cleaning liquid at a high pressure to maintain the filtration capacity of the filter cloth (90). This cleaning means may be constructed using various known types of cleaning devices. When cleaning the conventional filter cloth 90 through such a cleaning means 120, it is possible to eliminate the hassle of the task that had to separate and wash the filter cloth 90 from the filter plate one by one.

On the other hand, since the filter press 10 uses the filter cloth 90 formed to have a constant length, the filter press 10 becomes loose or taut when the filter assembly 60 is closed and opened. To this end, in this embodiment, the tension adjusting means 130 is installed so that the filter cloth 90 always maintains tension. Such tension adjusting means 130 may be used a variety of known methods. In the present embodiment, the tension adjusting means 130 has been shown to be installed separately between the drive roller 100 and the driven roller 110, by making the drive roller 100 or driven roller 110 to move. It will be possible. For example, the driving roller 100 or the driven roller 110 may be possible by transferring the pneumatic or hydraulic pressure on the cradle 50.

The filter press 10 according to the preferred embodiment of the present invention having such a configuration can be realized by various operation methods. Of course, the operation of the filter press 10 may be performed by a controller 200 in which a program for controlling the above-described components is input. The controller 200 may be a commonly used method by a PLC or computer control. In addition, a method of opening the filter assembly 60 after the dehydration process is completed may use a known method, and the filter cloth 90 is assembled through the pressing plate 34 as shown in FIG. As shown in, by connecting the filter plate 70 and the filter frame 80 with a chain 300 or the like so that the filter plate 70 and the filter frame 80 open at the same time when the pressing plate 34 is opened. Could be.

On the other hand, as shown in Figures 1 and 3, the filter press 10 according to the present invention in order to effectively detach the cake when the filter cloth 90 is transported after the dehydration process is completed, in particular, the filter assembly 60, A scraper 140 is provided below the filter plate 70. The scraper 140 may be configured in various ways, and may be installed to be located outside the intermediate roller 150 as in the present embodiment. At this time, the filter cloth 90 to pass between the intermediate roller 150 and the scraper 150.

The filter press 10 having such a configuration proceeds to a process in the following manner. When the operator operates the controller 200 or the switch connected to the controller 200, the pressing plate 34 is composed of a plurality of filter plates 70 and a filter frame 80 by the operation of the cylinder 32. ). At this time, the loosening filter cloth 90 is continuously adjusted by the tension adjusting means 130 to maintain a constant tension as described above. Then, the slurry is supplied to the filtration assembly 60 to proceed with the dehydration process. When the cylinder 32 moves backward after a predetermined time, the pressing plate 34 moves backward while the plurality of filter plates 70 and the filter frame 80 are separated at regular intervals. Of course, at this time, the separation of the filter plate 70 and the filter frame 80 may be performed by a conventional method. Next, the driving roller 100 is operated so that the filter cloth 90 is rotated while passing through the filter plate 70 and the filter mold 80 in a zigzag, and the cake is detached from the rotated filter cloth 90 and discharged to the outside. Then, the filter cloth 90 is rotated is cleaned by a high pressure cleaning liquid by the cleaning means 120.

As described above, the filter press according to the preferred embodiment of the present invention has been shown in accordance with the above description and drawings, but this is merely described for example, and various changes and modifications can be made without departing from the technical spirit of the present invention. It will be understood by those skilled in the art that it is possible.

Since the filter cloth of the present invention can be integrally formed and installed and separated, the assembly and disassembly of the filter cloth can be facilitated. In addition, it is possible to clean the filter cloth with a cleaning liquid sprayed at a high pressure by installing a cleaning device, it is easy to clean the filter cloth because it does not separate the filter cloth when the filtering capacity of the filter cloth is reduced, it is possible to maximize the work efficiency. In addition, the cake can be completely detached by the transport of the filter cloth, it is possible to maximize the work efficiency by maintaining the continuity of the waste water treatment operation.

Claims (14)

Head; A cylinder bracket spaced apart from the head; Side bars installed at both sides of the head and the cylinder bracket; A filtering assembly supported by the sidebar and installed between the head and the cylinder bracket; A filter cloth formed in a closed curve shape and installed to pass through the filter assembly; And a driving means coupled to the filter cloth to transfer the filter cloth through the filter assembly in which the filter cloth is spread. The method of claim 1, And a scraper for causing the cake attached to the filter cloth to be detached from the filter cloth when the filter cloth is conveyed by the drive means. The method of claim 1, And filter means for cleaning said filter cloth when said filter cloth is conveyed by said drive means. The method of claim 1, And a means for adjusting the tension of the filter cloth by pulling or releasing the filter cloth. The method of claim 1, The filter assembly includes a filter formed in each side of the recess so that the sidebar is located. The method according to any one of claims 1 to 5, The drive means includes a drive roller driven by the prime mover; A driven roller installed at a position corresponding to the driving roller and supporting the filter cloth while being rolled by the operation of the driving roller; And an intermediate roller installed on the filter assembly such that the filter cloth is positioned in an inflow direction and an outflow direction. The method of claim 6, The filter cloth includes a plurality of holes formed at equal intervals at both ends, The driving roller is a filter press including a plurality of projections are sequentially inserted into the plurality of holes formed in the filter cloth when the filter cloth is transported at both ends. The method according to any one of claims 1 to 5, The filter assembly includes a plurality of filter plates formed with passages through which the filtrate is discharged; And a plurality of filter frames forming a chamber in which the filter plates become a set and the cake remains, wherein the plurality of filter plates and the filter frames are alternately installed to form a set one by one. The method of claim 8, The filter plate and the filter frame are divided into an inside in which the filter cloth is located and an outside in which a slurry is introduced and a passage through which the filtrate is discharged, and slots formed at each side of the filter plate and the filter frame so that both ends of the filter cloth are located, respectively. Filter press to include. Head; A cylinder bracket spaced apart from the head; A filter assembly installed between the head and the cylinder bracket; A filter cloth formed in a closed curve shape and installed to pass through all of the filter assemblies; And a driving means coupled to the filter cloth to transfer the filter cloth through the filter assembly in which the filter cloth is spread. The method of claim 10, The filter assembly is a filter press is supported by the side bars provided on both sides of the head and the cylinder bracket. The method of claim 10, Both sides are coupled to the head and the cylinder bracket is provided with a cradle installed to cross the head and the cylinder bracket, The driving means is supported by the cradle and driven by a prime mover; A driven roller supported by the cradle; And an intermediate roller installed on the filter assembly such that the filter cloth is positioned in an inflow direction and an outflow direction. The method of claim 12, Washing means for cleaning the filter cloth when the filter cloth is supported by the cradle and the filter cloth is transported by the driving roller; Means supported by the cradle for adjusting the tension of the filter cloth; And a scraper installed in the filter assembly and configured to allow the cake attached to the filter cloth to be detached from the filter cloth to the lower portion of the filter assembly when the filter cloth is transported by the driving means. The method according to any one of claims 1, 6 and 10, The filter cloth includes a reinforcing band respectively coupled to both ends, wherein the reinforcing band is made of a material selected from the group consisting of synthetic resin, fiber, leather.