JPH05253420A - Recycling device for filter medium - Google Patents

Abstract

PURPOSE:To wash and classify an old filter medium to reuse it by installing a jet pump constituted so that the center axes of a nozzle part and a negative pressure forming pipe may coincide with each other and a filter medium classifying means for classifying filter mediums by diameter. CONSTITUTION:A jet pump 1 is constituted of a jet opening 15 of a nozzle part 14 in a negative pressure forming pipe 1A so that the center axes of the nozzle part 14, a discharge pipe 18 of a large diameter bend 12 and a small diameter pipe 11 may coincide with each other. Therefore, the jet pump is driven by superhigh pressure and sucks an old filter medium (a) in a filter column X is sucked in a short mime. The filter medium (a) crashes into jet water W to remove and wash the attached dirt, etc. In a filter medium classifying means 3, a fine mesh screen 31 A and several kinds of coarse mesh screens 32A, 33A, 34A of different mesh size are arranged in the opening part of the upper surface of plural hoppers 31, 32, 33, 34 in the order of increasing mesh size from the upper to lower stage and a hopper 35 is arranged for housing the coarse filter medium (a) of maximum diameter at the lowest stage. The filter medium (a) washed and classified is returned to the filter column X again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a filter material recycling apparatus.

[0002]

2. Description of the Related Art When the filtration material of a filtration tower becomes old, the filtration function deteriorates, and it is necessary to replace the filtration material. However, old filter media is legally considered industrial waste, which requires significant disposal costs, and also
There was a problem that the purchase cost of the new filter material would also be high.

Therefore, it is conceivable to wash and reuse the filter medium, but no proposal has been made for a filter medium recycling device.

The present invention has been made in view of the above points, and the purpose thereof is to wash the filter material taken out from the filter tower and reuse it, thereby eliminating the need to dispose of the old filter material. Another object of the present invention is to provide a filter material recycling apparatus that can minimize the amount of filter material to be newly supplied, and further save labor and shorten the construction period.

[0005]

SUMMARY OF THE INVENTION A filter material recycling apparatus of the present invention, which has been proposed to achieve the above object, has an air introduction hole and a filter material introduction hole in the wall of a negative pressure forming tube having a discharge port at its tip. A jet pump having a hole formed therein, the injection port of the nozzle section being disposed in the negative pressure forming tube, and the central axes of the nozzle section and the negative pressure forming tube being aligned with each other, and a filter material for the jet pump. A filter medium suction hose connected to the suction hole, a filter medium classifying unit for classifying the filter medium by diameter, and a pipe line for conveying the filter medium from the discharge port of the negative pressure forming pipe of the jet pump to the filter medium classifying unit. It is characterized by having.

[0006]

According to the filter material recycling apparatus of the present invention, when the jet water is jetted from the nozzle portion, a pressure difference is generated in the negative pressure forming pipe, and due to this pressure difference, the air is sucked from the air introduction hole communicating with the atmosphere. Therefore, the jet water is surrounded by the air and maintains the velocity at the time of jetting as it is to run in the negative pressure forming pipe at a high speed. Therefore, the cavitation phenomenon, which is a drawback of the conventional jet pump, can be eliminated and driving by ultrahigh pressure becomes possible, and the old filter medium in the filtration tower can be sucked up in a short time.

[0007] Then, the suctioned filter medium is washed with the jet water and collision to separate dust and the like adhering to the filter medium from the filter medium, and the filter medium is washed. Then, the washed filter material is classified according to size by a classifying means. The filter material thus washed and classified is returned to the filter tower again.

[0008]

EXAMPLE FIG. 1 shows a schematic view of a filter material recycling apparatus. As shown in FIG. 1, the filter material cleaning / classifying device comprises a jet pump 1 for sucking up the filter material a from a filter tower X, a filter material transport pipe line 2, and a filter material classifying means for classifying the filter material a by diameter. It consists of 3 and so on.

The jet pump 1, as shown in FIG.
The negative pressure forming pipe 1A is formed by connecting the tip opening of the small diameter pipe 11 to the mounting hole 13 of the pipe wall of the large diameter bending pipe 12 so that the central axes of the pipes 11 and 12 respectively match. Tube 1
An air introduction hole 17 is bored in the wall of the small diameter tube 11 of A, and the injection port 15 of the nozzle section 14 is provided in the negative pressure forming tube 1A.
4, the discharge pipe 18 of the large-diameter bent pipe 12 and the small-diameter pipe 11 are arranged so that their central axes coincide with each other.

Further, the filter medium suction tube portion 1 of the large diameter bent tube 12
A filter material suction hose 4 is connected to the filter 6. And
The drive water W jetted from the nozzle portion 14 is supplied from the drive pump P1 through the drive water supply pipe 5 as shown in FIG.

The jet pump 1 has a discharge port to which a base end of a filter medium conveying pipe line 2 is connected, and a tip of the filter medium conveying pipe line 2 is opened above the first hopper 31 of the filter medium classifying means 3. ing. A reverse injection valve V is attached in the middle of the filter medium conveying pipeline 3.

The filtering material classifying means 3 comprises a plurality of hoppers 3.
1, 32, 33, 34 (four in the figure) are arranged in a row, and primary screens are arranged in the openings of the upper surfaces of these hoppers 31, 32, 33, 34. That is, several kinds of coarse screens 32A, 33A, 34A having mesh sizes different from those of the fine screen 31A are respectively arranged from the upper stage to the lower stage in the ascending order of the mesh size, and the coarse filter medium a having the largest diameter is collected in the lower stage. A hopper 35 is installed, and a discharge pipe 39 is led out from the lower part of the hopper 35.

The openings on the upper surfaces of the hoppers 31, 32, 33 and 34 are formed to be inclined, and the hoppers 31 and 3 are formed.
The inclined surfaces of the openings of the upper surfaces of 2, 33, 34 are located on the same inclined surface, and the fine screen 31A and the coarse screens 32A, 33A, 34A also have hoppers 31, 32, 33,
It is arranged so as to be inclined so as to correspond to the upper surface opening portion of 34.

Further, the fine screen 31A and the coarse screens 32A, 33A and 34A are integrally formed so that they are vibrated by the vibrator 3B.
The filtering material a is a fine screen 31A and a coarse screen 32.
The filter material a is classified in the process of moving on the A, 33A, and 34A. Discharge pipes 36, 37, 38, 39 are attached to the bottoms of the hoppers 32, 33, 34, 35,
The lower end of the discharge pipe 35 of the hopper 31 is open in the separating body 71 of the minimum fine media separating device 7 described later.

Discharge pipes 36-3 of the other hoppers 31-35
Below the lower end of 9, the container backs 3C are arranged, respectively. The diameter of the fine filtration material a is about 0.6 mm, and the diameter of the coarse filtration material is about 3 mm to 25 mm.

Reference numeral 6 denotes a filter material final cleaning means, which is constituted by disposing a fresh water injection nozzle 61 above the first hopper 31 of the filter material classifying means 3 which will be described later. It is attached to the tip of the supply pipe 62, and sprays fresh water that is pressure-fed by a spray pump P2 connected in the middle of the fresh water supply pipe 62 onto the filter material a for final cleaning.

Reference numeral 7 denotes a fine filter material separating device, which is a separating body 7.
1 and the like are configured to separate the fine filtration material a and the muddy water W1. That is, the separating body 71 is formed in a horizontal tubular shape formed of a secondary screen material having a mesh size of a degree through which the fine filtering material a passes, and is formed by closing both end surfaces. A fresh water injection pipe 72 is introduced so as to coincide with the central axis of the separation body 71, and a fresh water injection pipe 73 is arranged on the outer peripheral portion of the separation body 71 in parallel with the central axis of the separation body 71. A rotating shaft 71a is provided so as to project from the center of the end face of the separating body 71, and a transmission belt is stretched between the rotating shaft 71a and the drive shaft of the motor M near the separating body 71. . A fine filtration material inlet 71b is provided at the center of the central axis 71a of the separating body 71, and the lower end of the discharge pipe 31a led out from the bottom of the hopper 31 is rotatably attached to the fine filtering material introduction opening 71b. Are connected so that A filter medium discharge pipe 71c is led out to the end of the separation chamber 71 on the side opposite to the fine filter medium inlet 71b.
A container bag 3C is arranged below the discharge port of the filter material discharge pipe 71c. Nozzle holes are provided on the lower side of the fresh water injection pipes 72 and 73 over substantially the entire length, and are connected to the fresh water injection pipes 72 and 73 and the fresh water supply pipe 62, respectively.

As the primary screen for separating sand and gravel, urethane sieve (model TSV-0208) manufactured by Toyo Screen Industry Co., Ltd. is used. U-TROM screen (TSUR 1207S type) is used.

Reference numeral 8 denotes a pump pit. The muddy water W1 discharged from the separator 71 of the fine filtration material separating device 7 is temporarily stored in the pump pit 8 and the supernatant water thereof is jet pump 1
It is designed to be used as the driving water W. Reference numeral 81 is a drain section and 82 an overflow section.

A pump generator 9 is a control panel of a 100 filter material recycling device.

Next, the operation of the filter material recycling apparatus A configured as described above will be described. First, the tip of the filtration material suction hose 4 is inserted into the tower through the upper opening X1 of the filtration tower X. Next, when the jet water W is jetted from the nozzle portion 14 of the jet pump 1, as described in the above action, the cavitation phenomenon is prevented and the filter material a is driven at an ultrahigh pressure to suck the filter medium a in a short time. The suctioned filter medium a collides with the jet water W to separate dust and the like adhering to the filter medium a from the filter medium a, and the jet water W cleans the filter medium a. In this way, the filter medium a is transported through the filter medium transport pipeline 2 while being washed. Next, the filter medium a is discharged from the discharge port at the end of the filter medium conveying pipeline 2, and the first hopper 31 of the filter medium classifying means 3 is discharged.
The filter material a that has dropped onto the fine screen 31 </ b> A and is dropped is washed with fresh water jetted from the fresh water jet nozzle 61. The muddy water W1 containing the finest filtering material a passes through the fine screen 31A, drops to the bottom of the hopper 31, and then passes through the discharge pipe 31a, and then the separating body 71 of the smallest filtering material separating device 7 is formed.
Enter inside.

In the minimum fine filter material separating device 7, the fine filter material a is rotated by spraying the fresh water from the fresh water injection pipes 72, 73 onto the fine filter material a in the separate body 71. The muddy water W1 containing kimono and dust is separated. Then, the fine filtration material a is collected in the container back 3C from the discharge pipe 71c, and the dirty water W1 flows into the pump pit 8 from the mesh portion of the separator 71. On the other hand, the coarse filtration material a moves downward along the screens 31A to 34A vibrating in the vibrator 3B. Then, the second to fourth screens 32A to 3A during movement.
The filtering media a having different diameters are dropped into the hoppers 32 to 34 through the mesh portion of 4A, and are collected in the container bag 3C from the hoppers 32 to 34. It is collected in the back 3C. In this way, the filtering material a is classified by diameter (diameter 3 mm to 5 mm, diameter 5
mm-10 mm, diameter 10 mm-15 mm, diameter 15 mm-
Classified into 25 mm filter media a).

The filter material a thus washed and classified is returned to the filter tower again.

When the jet pump 1 is clogged with the filter material a, the reverse injection valve V is closed and the jet pump 1 is driven. As shown in FIG. I can be removed.

FIG. 5 shows a state in which the filter material recycling device A is mounted on the transport vehicle C, and the filter material classifying means 3 projects the discharge pipe of the hopper from the side of the transport vehicle C. Therefore, the filter material recycling device A can be conveyed to the filtration tower X, and the cleaning operation can be immediately performed on the spot, and the construction period can be shortened.

[0026]

As is apparent from the above description, according to the filter material recycling system of the present invention, since the filter material can be washed and classified and returned to the filtration tower again, the filter material to be newly supplied. It is possible to reduce the amount of resources and save resources and reduce costs.

In addition, since the cavitation phenomenon can be eliminated and the old filter medium in the filter tower can be sucked up by driving at an ultrahigh pressure, it is possible to shorten the construction period and save labor. Further, since the filter medium suction hose is used to suck the filter medium, the suction work can be performed even in a place such as a basement room where large equipment cannot enter.

[0028]

[Brief description of drawings]

FIG. 1 is a schematic view of a filter material recycling apparatus of the present invention.

FIG. 2 is a cross-sectional view of a jet pump used in the filter material recycling apparatus of the present invention.

FIG. 3 is a sectional view of a jet pump used in the filter material recycling apparatus of the present invention.

FIG. 4 is a plan view showing an automobile equipped with the filter material recycling device of the present invention.

[Explanation of symbols]

 1 Jet pump 2 Filtration material conveyance line 3 Filtration material classification means

Claims (1)

[Claims] 1. A negative pressure forming pipe having a discharge port at its tip is formed with an air introduction hole and a filter medium introduction hole, and an injection port of the nozzle portion is arranged in the negative pressure formation pipe and at the same time as a nozzle portion. A jet pump configured so that the respective central axes of the negative pressure forming tubes are aligned with each other, a filter medium suction hose connected to the filter pump suction port of the jet pump, and a filter medium classification means for classifying the filter medium by diameter. A filter medium recycling apparatus comprising: a pipe for conveying the filter medium from a discharge port of a negative pressure forming pipe of a jet pump to a filter medium classifying unit.