JP2008093626A - Filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter which is easy in carrying and setting-up, and hardly causes clogging. <P>SOLUTION: The filter comprises a frame body 1 with a rectangular parallelepiped frame structure, a bag-shaped filter cloth 2 disposed inside of the frame body 1, a filer cloth fixing tool 3 for fixing the filter cloth 2 to the frame body 1, and a locking part 4 for mutually engaging the upper part of one of the frame body 1 with the lower part of the other frame body 1 when putting the frame bodies 1 on top of each other. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filter for removing solids from water containing solids discharged by cleaning a distribution reservoir.

  The distribution reservoir is a facility that temporarily stores the water sent from the water treatment plant, and is used to adjust the time fluctuation of the distribution amount and to secure a certain amount of water supply in the event of an accident or disaster. Although the water stored in the water reservoir is purified at the water treatment plant, it contains sand, flocs formed at the water purification plant, iron rust peeled off from the structure of the water reservoir, and naturally derived manganese. Deposits on the bottom over the years of use. If these sediments soar, it will cause turbid water, so it must be cleaned at regular intervals. Although there is a method of draining all the stored water for cleaning, since the waste of water resources is large, generally, a deposit is discharged together with water by a diver or a remotely operated cleaning robot. FIG. 6 shows an example of the cleaning method. The cleaning robot 17 travels on the bottom of the reservoir 16 to collect the sediment 18 and collects the sediment 18 together with water through the suction hose 14 by the pump 19 installed outside. To suck. If the water containing the sucked deposit 18 is discharged as it is to the drain groove 21 or the like, it is not preferable because the drain groove 21 is clogged. Therefore, the water discharged from the pump 19 is temporarily stored in the settling tank 20 through the discharge hose 15, and the sediment 18 is precipitated and then discharged.

The sedimentation tank used here must be large to some extent because it is necessary to sediment the sediment, and is generally made of iron and cannot be carried by human power. Therefore, it is necessary to use a crane-equipped truck for transporting and installing the sedimentation tank, which is troublesome and expensive. Furthermore, in the case of a distribution reservoir in a place where cars cannot enter, such as in the mountains, it is difficult to transport the sedimentation tank to that place. As what is used instead of such a sedimentation tank, there exists a dehydration processing apparatus described in Document 1 in which a dehydration bag is suspended from a frame.
Registered Utility Model No. 3022737

  However, although this dehydration device is considered to be lighter than the settling tank, it is mainly designed to improve efficiency during storage rather than transport, and it has a single dehydration bag for filtration. Therefore, it is likely to cause clogging.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a filter that is easy to transport and install and is less likely to cause clogging.

  The present invention provides a frame having a rectangular parallelepiped frame structure, a bag-like filter cloth installed inside the frame, a filter cloth fixture for fixing the filter cloth to the frame, and the frame And an engaging portion in which the upper part of one frame body and the lower part of the other frame body are engaged with each other when stacked.

  According to the present invention, since it is a frame structure, it is lightweight and easy to carry and install. In addition, it is possible to stack two or more main filters by the locking part, and stack two or more main filters with different coarse filter cloths, with the coarse filter cloths facing up. By using it, sand with a large particle size is collected by the upper filter, and flocs with a small particle size are collected by the lower filter, so clogging is unlikely to occur and a large amount of water is quickly and efficiently used. Can be processed automatically.

  A specific configuration of the filter of the present invention will be described based on each drawing.

  FIG. 1 is a perspective view of the filter of the present invention. A bag-shaped filter cloth 2 is installed inside the cubic frame 1, and a filter cloth fixture 3 is installed along each side of the upper surface of the frame body 1 by sandwiching the periphery of the filter cloth 2. Secure with bolts 7 and wing nuts (not shown). Moreover, the latching | locking part 4 for stacking two or more this filter is provided in the lower part of the frame 1. As shown in FIG.

  As shown in FIG. 2, the frame 1 is formed by welding 12 identically shaped angle steels into a cubic shape by welding. A frame bolt hole 5 through which the butterfly bolt 7 is passed is formed on the upper surface. Further, by providing the notch 6 on the lower surface of the frame 1, when the two main filters are stacked, the frame 1 of the upper filter and the butterfly bolt 7 of the lower filter do not interfere with each other.

The filter cloth 2 is made of a single square mesh fabric, and is formed into a bag shape by providing a tack 8 at the center of each side of the mesh fabric and sewing the periphery (seam 9). FIG. 3 shows a perspective view of the filter cloth 2. A filter cloth bolt hole 10 is provided in the peripheral portion at a position corresponding to the frame bolt hole 5 of the frame 1 and is reinforced by eyelets. The mesh fabric may be any material as long as it is water permeable and blocks solids such as sand and flocks. Made mesh was used. Table 1 below shows the standards for five types of products.

  As shown in FIG. 4, the filter cloth fixture 3 is obtained by bonding an elastic member 12 to a fixing member 11 made of angle steel shorter than one side of the frame body 1. The fixing member 11 may be a flat plate, but the angle steel is more resistant to deformation, and can be easily positioned by placing the vertical portion in contact with the frame 1 during use. The elastic member 12 is a rectangular parallelepiped sponge, and is used to securely fix the filter cloth fixture 3 to the filter cloth 2 when the filter cloth 2 is fixed. The material is not limited to sponge, but may be rubber. The fixing member 11 and the elastic member 12 are provided with fixture bolt holes 13 at positions corresponding to the frame body bolt holes 5 of the frame body 1.

  The locking portion 4 is made of a single flat plate and is welded to the lower side surface of the frame body 1. In this embodiment, the vertical portion of the filter cloth fixture 3 installed on the upper part of the frame body 1 has a structure protruding outward from the edge of the frame body 1, so the dimension between the inner sides of the engaging portions 4 facing each other is It forms so that it may become slightly larger than the dimension between the outer sides of the filter cloth fixing tool 3 which faces. By forming the locking portion 4 in this way, the upper part of one filter can be engaged with the lower part of the other filter. When the filter cloth fixture 3 has a structure that does not protrude outward from the edge of the frame body 1, the dimension between the insides of the engaging portions 4 that face each other is slightly larger than the width of the frame body 1. That's fine. The locking part 4 has a structure in which two main filters can be stacked and fixed, such as one made of two or more flat plates or one having a convex part on the upper surface of the frame body 1 and a concave part corresponding to the lower surface. Anything may be used.

  The usage method of the filter of this invention is demonstrated based on FIG. Here, the case where two main filters are used is shown, and the filters are designated as Fa and Fb, respectively. Moreover, let each component of the filter Fa be 1a, 2a, ..., and let each component of the filter Fb be 1b, 2b, .... The filter Fa and the filter Fb are provided with filter cloths 2a and 2b having different coarse meshes. Here, the filter cloth 2a is made of PE100, and the filter cloth 2b is made of PE120.

  In use, first, the filters Fa and Fb are transported to a place with a distribution reservoir. Since the present filters Fa and Fb are extremely lightweight with a frame structure, they can be transported by human power even in places where cars cannot enter. At this time, the frame 1a, the filter cloth 2a, the filter cloth fixture 3a and the frame 1b, the filter cloth 2b, and the filter cloth fixture 3b may be assembled in advance, or may be separately transported and assembled on site. Good. When the transportation is completed, the main filters Fa and Fb are installed on the drainage groove 21 or the like where the water can be drained. At this time, the filter Fb having the fine filter cloth 2b is installed below, and the filter Fa having the coarse filter cloth 2a is stacked thereon. The filters Fa and Fb are securely fixed by the locking portion 4a.

  When the installation of the filters Fa and Fb is completed, cleaning of the distribution reservoir is started. In this embodiment, the cleaning robot dives into the reservoir and collects sediment at the bottom. A suction hose is connected to the cleaning robot and is connected to the inlet of a pump installed outside. Further, the discharge hose 15 is connected to the pump outlet, and the other end is fixed to the upper part of the filter Fa. The sediment collected by the cleaning robot is sucked together with water through the suction hose by the pump, and further discharged to the filter Fa through the drain hose 15. In the filter Fa, sand having a large particle diameter is collected, and water and floc having a small particle diameter flow down to the lower filter Fb. In the filter Fb, flocs and the like are collected, and the filtered water is drained into the drain groove 21.

  The solid matter collected by the filters Fa and Fb is discarded if there is a disposal place in the site of the distribution reservoir, and if not, bring a collection container in advance and collect it in the container. The filter cloths 2a and 2b can be used repeatedly if the collected solid matter is discarded and washed. Even when a collection container has to be brought, the labor and cost for transportation and installation are far less than when a settling tank is used.

  The filter of the present invention is not limited to the above embodiment. For example, the frame body 1 may have a rectangular parallelepiped shape, in which case the filter cloth 2 is also formed from a rectangular mesh fabric. Moreover, it is good also as disassembly by fixing each edge | side of the frame 1 with a volt | bolt. Furthermore, the filter cloth fixture 3 may be a clip-like one that is fixed by the elastic force of a spring.

  Moreover, the filter of this invention can be used in various cases which drain similarly the water containing a solid substance besides cleaning of a distribution reservoir by adjusting the coarseness of the filter cloth 2 suitably. Furthermore, in use, three or more main filters may be stacked.

The perspective view which shows the filter of this invention. The perspective view which shows a frame. The perspective view which shows a filter cloth. The perspective view which shows a filter cloth fixing tool. The perspective view which shows the use condition of this filter. Explanatory drawing which shows the cleaning method of a distribution reservoir using the conventional sedimentation tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 2 Filter cloth 3 Filter cloth fixing tool 4 Locking part

Claims (1)

  A frame (1) having a rectangular parallelepiped frame structure, a bag-shaped filter cloth (2) installed inside the frame (1), and the filter cloth (2) are attached to the frame (1). When the filter cloth fixture (3) to be fixed and the frame (1) are stacked, the upper part of one frame (1) and the lower part of the other frame (1) are engaged with each other. And a locking part (4).

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