JP6685370B1 - Filter media recycling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter medium reclaiming device for more effectively removing dirt attached to a filter medium. SOLUTION: A filter medium recycling apparatus 100 is provided with a water tank 8, a pressure pump 21 for sucking and pressurizing water stored in the water tank, a classifying unit 3 for classifying the filter medium, and a pressure pump. First jet pump 1A which is driven by water and sucks and ejects a filter medium to be regenerated and sends it to the classifying unit, a showering device 7 for washing the filter medium classified by the classifying unit 3, and a shower. The second jet pump 1B for sucking and ejecting the filter medium washed by the ring device. [Selection diagram] Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter medium reclaiming device that cleans and recycles a filter medium having dirt attached by use, and more particularly to a filter medium reclaiming device that uses a jet pump to clean the filter medium.

  2. Description of the Related Art Conventionally, a filter material recycling device is known in which a filter material used in a filter, a filter pond, or the like is washed and regenerated with a jet pump.

  For example, in Patent Document 1, when an air-mixed jet that sucks air together with liquid into a negative pressure generating portion of a jet pump, the filter material of a filtration tower is sucked and sent to a classifying section that classifies the filter material into sizes. There has been proposed a filter medium recycling apparatus for cleaning the filter medium with water jetted by an air-fuel mixture jet.

  However, when dirt is strongly adhered to the filter medium, the problem is that the filter material recycling apparatus of Patent Document 1 cannot sufficiently remove the dirt.

  Therefore, the present inventor, as shown in FIG. 2, has a second jet between the first jet pump 1A for sucking the filter medium from the filtration tower X and the classifying unit 3 in the filter medium recycling apparatus of Patent Document 1. The present invention contemplates a filter medium regenerating apparatus 900 that is provided with a pump 1C and cleans the filter medium twice with water while flowing the filter medium from the filtration tower X to the classification unit 3.

JP-A-5-253420

However, since the filter medium recycling apparatus 900 supplies the pressurized water not only to the first jet pump 1A but also to the second jet pump 1C, a large amount of water is sent to the classifying unit 3 together with the filter medium, and the classifying unit 3 The hopper 31 for classifying the finest filter material of No. 3 overflows dirt such as deposits separated from the filter material together with the excess water, passes through the excess water drain pipes 40 and 41, and the filter material is mixed with the stored water in the water storage tank 8. There is a problem of being lost.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a filter medium recycling apparatus in which the filter medium does not mix with the stored water.

The invention made to solve the above problems is a water storage tank, a pressure pump for sucking and pressurizing water stored in the water storage tank, a classifying unit having a plurality of classification stages for classifying a filter medium, and A first jet pump, which is driven by water pressurized by a pressure pump, sucks and ejects a filter medium to be regenerated and sends it to the classifying unit, and a shower for cleaning the filter medium classified by the classifying unit. and ring device, the driven by pressurized water by pressurizing pump, and a second jet pump for jetting to suck the washed filter medium in the showering apparatus, the plurality of classification stages, upper It consists of a hopper equipped with a sieve that closes the openings, ranging from one with a fine mesh to one with a coarse mesh so that the adjacent classification stage and the upper opening are in contact. A circulating water injection nozzle for injecting circulating water to the filter medium is provided above the sieve, and the circulating water injection nozzle is provided with a water storage tank via a circulating water supply pipe from a pump provided in the water tank. Along with the supply of the supernatant water of the tank, it is configured to drain the excess water out of the water sent to each hopper to the water storage tank through an excess water drain pipe, the showering device, a rotary sieve, With a fresh water injection pipe, the rotary sieve has a filter medium introducing port communicating with the inside thereof, and a filter medium discharge pipe, and the filter medium classified by the classifying unit is passed through the filter medium introducing port to the rotary sieve. The second jet pump is configured to be introduced, washed with fresh water injected from the fresh water injection pipe, and then discharged from the filter medium discharge pipe, and the second jet pump discharges from the inside of the rotary sieve through the filter medium discharge pipe. By sucking the washed filter medium which is a medium generation apparatus is configured to eject.

  As described above, in the filter medium regenerating apparatus according to the present invention, the second jet pump provided in addition to the first jet pump is provided on the downstream side of the showering device for cleaning the classified filter medium, and the cleaning is performed from the showering device. Since the finished filter medium is sucked by the second jet pump and sent to the regenerated filter medium accommodation part, the pressurized water for driving the second jet pump is not sent to the classification part, and the hopper of the classification part It is possible to prevent the filter material and dirt from overflowing.

Further, the filter medium regenerating apparatus of the present invention has a regenerated filter medium storing section for storing the filter medium ejected from the jet pump, the regenerated filter medium storing section is a water-permeable filter medium storing bag for storing the filter medium, and It is preferable to include a permeate tank for accommodating the filter medium accommodating bag and storing water that has permeated the filter medium accommodating bag, and a return pump for returning the water in the permeate water tank to the water storage tank. By doing so, the water used for cleaning the filter medium can be returned to the reservoir and reused.
Here, the “jet pump” refers to a pump that sucks solids, liquids, and gases from the outside, cleans, and sends them by negative pressure generated by narrowing the flow path diameter of the pressurized water.

  As described above, according to the filter medium recycling apparatus of the present invention, it is possible to prevent the filter medium and the stains peeled from the filter medium from mixing in the stored water, and the stains peeled from the filter medium by the first jet pump can prevent the second It is possible to prevent the cleaning by the jet pump from being hindered.

It is a schematic diagram of a filter medium recycling device according to an embodiment of the present invention. It is a schematic diagram of a filter medium recycling device that the present inventor has conceived earlier. It is a longitudinal cross-sectional view of the jet pump shown in FIG.

  Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 shows a filter medium recycling apparatus 100 according to the first embodiment of the present invention. As shown in FIG. 1, the filter medium recycling device 100 includes a first jet pump 1A and a second jet pump 1B, a pressurizing pump 21, a classifying unit 3, a showering device 7, and a water tank 8. , And the regenerated filter medium accommodation portion 9 is mainly provided. With such a configuration, the filter medium recycling apparatus 100 sucks and discharges the filter medium consisting of the filter medium a and the filter gravel b of the filter tower X, separates the filter medium a and the filter gravel b, and filters the filter gravel b by particle size. In addition to the classification, the filter material a is provided so as to recycle the filter material a by removing the dirt adhering to or adhering to the filter material a. The filter medium a is composed of anthracite, manganese zeolite, filter sand, etc., which plays a major part in the filtering action, and the filter gravel b is a gravel layer which supports the filter medium a.

As shown in FIG. 3, the first and second jet pumps 1A and 1B include a pressurized water introducing pipe 11 for introducing pressurized water, an injection nozzle 12 provided by reducing the diameter of the tip of the pressurized water introducing pipe 11, and an injection. A mixture tube 13 continuous to the downstream side of the nozzle 12 (on the right side in FIG. 3) and having an inner diameter slightly larger than the injection nozzle 12, and a negative pressure generation tube 14 continuous to the downstream side of the mixture tube 13 and having a larger diameter than the mixture tube 13. It has and.
The mixture pipe 13 has an intake port 13a opening to the pipe wall, and the negative pressure generating pipe 14 has a suction port 14a opening to the pipe wall near the bottom portion 14b.
As shown in FIG. 1, the pressurized water introducing pipe 11 of the first jet pump 1 </ b> A communicates with the pressurizing pump 21, and the rear end opening 15 is provided with the filter medium feeding pipe 50 and the filter medium inlet port 30 of the classification unit 3. Is in communication with. The pressurized water introduction pipe 11 of the second jet pump 1B also communicates with the pressure pump 21, and the rear end opening 15 communicates with the regenerated filter medium accommodation portion 9 via the discharge pipe 75.

  That is, both the first and second jet pumps 1A and 1B are driven by the pressurizing pump 21. The pressurizing pump 21 pressurizes the stored water in the water storage tank 8 and introduces it into the pressurized water introducing pipes 11 of the first and second jet pumps 1A and 1B. The pressurized water introduced into the pressurized water introducing pipe 11 becomes a jet jet by a jet nozzle 12 having a diameter smaller than that of the pressurized water introducing pipe 11 and is ejected to the air-fuel mixture pipe 13, and is decompressed to the inside of the air-fuel mixture pipe 13 and the negative pressure generating pipe 14. Generate a negative pressure. Thus, the negative pressure generated in the air-fuel mixture tube 13 sucks the air in the atmosphere from the intake port 13a into the air-fuel mixture tube 13, and the jet jet is surrounded by this air, so that the high speed at the time of injection can be maintained. . Further, the filter medium of the filtration tower X is sucked from the suction port 14a by the negative pressure generated inside the negative pressure generation pipe 14.

  The classifying unit 3 includes a plurality of (five in the illustrated example) hoppers 31, 32, 33, 34, and 35. The hoppers 31, 32, 33, 34 have sieves 31A, 32A, 33A, 34A for closing the upper openings. The sieves 31A, 32A, 33A, 34A are arranged in this order from fine mesh to coarse mesh. The sieves 31A, 32A, 33A, and 34A vibrate integrally by the vibrators 3B and 3B to feed the filter medium introduced from the filter medium inlet 30 to the rear coarse sieve, and the fine particle size is obtained. The filter material is configured to be classified into hoppers 31, 32, 33, 34, and 35 in order. The sieves 31A, 32A, 33A, 34A are not particularly limited, but stainless sieves are preferably used. As the size of the filter material classified by each hopper, for example, in the hopper 31, the filter material a having an effective diameter of about 0.6 mm is classified, and in the hoppers 32, 33, 34, 35, the particle diameter is about 3 to 25 mm. The filtered gravel b is classified.

  Further, above the sieve 31A, circulating water jet nozzles 61, 61 for jetting circulating water to the filter medium a are provided. The supernatant water of the water storage tank 8 is circulated and supplied to the circulating water injection nozzle 61 from the pump 22 provided in the water storage tank 8 via the circulating water supply pipes 62 and 63.

  The lower end of the hopper 31 is connected to the showering device 7 by a filter medium feed pipe 31a, and the discharge pipes 36, 37, 38, 39 for discharging the classified filter medium are provided at the lower ends of the hoppers 32, 33, 34, 35. It is provided.

The showering device 7 includes a rotary sieve 71 and a fresh water injection pipe 73. The rotary sieve 71 is configured by closing both ends of a cylindrical stainless steel sieve arranged horizontally, and a rotary shaft 71a and a filter material introduction port 71b are provided on one end side (left side in FIG. 1) of the end. A filter medium discharge pipe 74 is provided on the end face on the end side. The fresh water injection pipe 73 is provided so as to extend in the axial center direction of the rotary sieve along the outer peripheral surface of the rotary sieve 71, and sprays fresh water onto the rotary sieve 71 to wash off clogging of the rotary sieve 71 and sludge inside. Fresh water is supplied to the fresh water injection pipe 73 from a fresh water reservoir 67 by a pump 68 via the fresh water supply pipes 64 and 65. The rotary sieve 71 is rotated by a motor M1 via a transmission belt (not shown) and a rotation shaft 71a.
The showering device 7 is provided above the water storage tank 8, and the dirt separated from the filter media a introduced from the filter media introduction port 71b is permeated downward as muddy water W1 to the muddy water tank 81 of the water tank 8. The filtered and washed filter medium a is discharged from the filter medium discharge pipe 74. The cleaned filter medium a is sent from the filter medium discharge pipe 74 to the second jet pump 1B for the final cleaning to remove the coagulated substance, and the filter medium a is cleaned.

  The water storage tank 8 is partitioned by a partition wall 85 into a muddy water tank 81 that stores the muddy water discharged from the showering device 7 and a supernatant water tank 82 that stores the supernatant water of the muddy water tank 81. Reference numerals 83 and 84 in the figure denote a drain section and an overflow section, respectively.

  The recycled filter medium storage unit 9 stores a water-permeable container bag 91 that stores the filter medium a discharged from the second jet pump 1B, a mounting table 93 for the container bag 91, and the container bag 91 that transmits the container bag 91 while permeating the container bag 91. And a permeated water tank 92 that stores the permeated water W2.

Next, the operation method of the filter medium recycling apparatus 100 according to the present embodiment and the operation / effect of each part will be described.
When the filter medium (filter medium a and filter gravel b) is recycled using the filter medium recycling apparatus 100, first, the pressurizing pump 21 is driven with the filter medium suction hose 4 inserted in the filter medium of the filter tower X. Then, the pressurized water is introduced into the pressurized water introducing pipe 11 of the first jet pump 1A.
Then, the first jet pump 1A sucks the filter medium from the suction port 14a by the above-described action, and flows the filter medium to the classifying unit 3 via the filter medium flow pipe 50 while cleaning the filter medium with the jet jet flow.

  The filter medium sent to the classifying unit 3 rolls on the sieves 31A, 32A, 33A, 34A while being washed by the circulating water jetted from the circulating water jet nozzles 61, 61, of which the filter medium a is in the hopper 31. And the filtered gravel b is classified into the hoppers 32, 33, 34, 35 in order of decreasing particle size. The filtered gravel b classified into the hoppers 32, 33, 34, 35 is stored in the container bag 3C via the discharge pipes 36, 37, 38, 39, respectively.

  The filter medium a classified into the hopper 31 is conveyed through the filter medium flow pipe 31a from the filter medium inlet port 71b of the showering device 7 into the rotary sieve 71, and washed with the fountain from the fresh water jet pipe 73. The sludge that has adhered and the filter medium with an unnecessary particle size smaller than that of the sieve are separated. The muddy water W1 containing the separated sludge passes through the rotary sieve 71 and is discharged to the muddy water tank 81. At this time, the clogging of the rotary sieve 71 is cleaned by the fresh water injection pipe 73.

  Here, the pressurized water is also supplied from the pressurized pump 21 to the pressurized water supply pipe 53 to drive the second jet pump 1B. Then, the filter medium a, which has been cleaned in the rotary sieve 71, is sucked by the second jet pump 1B through the filter medium discharge pipe 74, is washed by the jet jet, and is transferred to the container bag 91 through the discharge pipe 75. Is discharged. The water discharged together with the filtering material a is stored in the permeated water tank 92 and is returned to the muddy water tank 81 by the pump 94. The regenerated filter material a is returned to the filtration tower X and used again.

  In the filter medium regenerating apparatus 100 of the present embodiment, the filter medium a is thus washed by the showering device 7 to separate the sludge and then washed by the second jet pump again, so that the filter medium a is adhered to the filter medium a. Further dirt can be removed.

  Further, since the drive water for the second jet pump does not pass through the classifying unit 3, the filter material a, gravel, etc. overflowing from the classifying unit 3 will not be mixed in the water tank 8.

  The filter medium recycling apparatus of the present invention is not limited to the above embodiment, and for example, the jet pump may not include the intake port. The recycled filter medium storage unit may not include a pump that recirculates waste water. The number of hoppers in the classification section may be 4 or less or 6 or more.

First jet pump 1A
Second jet pump 2A
Pressure pump 21
Classification section 3
Hopper (classification stage) 31, 32, 33, 34
Showering device 7
Water tank 8
Recycled filter media storage 9
Filter material storage bag (container bag) 91
Permeate water tank 92
Return pump 94

Claims (2)

A water tank,
A pressurizing pump for sucking and pressurizing the water stored in the water tank,
A classifying unit having a plurality of classification stages for classifying the filter medium,
A first jet pump which is driven by water pressurized by the pressure pump, sucks and ejects a filter medium to be regenerated, and sends the filter medium to the classification unit;
A showering device for cleaning the filter medium classified by the classifying unit,
A second jet pump which is driven by water pressurized by the pressure pump and which sucks and ejects the filter medium washed by the showering device,
The plurality of classification stages consist of a hopper with a sieve that closes the upper opening, from one with a finer sieve to one with a coarser sieve so that the adjacent classification stage and the upper opening are in contact. Arranged above the sieve, a circulating water injection nozzle for injecting circulating water to the filter medium is provided, and the circulating water injection nozzle is provided with a circulating water supply pipe from a pump provided in the water tank. While being supplied with the clear water of the water tank, it is configured to drain excess water out of the water sent to each hopper to the water tank through an excess water drain pipe,
The showering device includes a rotary sieve and a fresh water injection pipe, the rotary sieve has a filter medium inlet port communicating with the inside thereof, and a filter medium discharge pipe, and the filter medium classified by the classifying unit. The second jet pump is configured to be introduced into the rotary sieve from the filter material inlet port, washed with fresh water injected from the fresh water injection pipe, and then discharged from the filter material discharge pipe, and the second jet pump is configured to discharge the filter material discharge pipe. A filter medium recycling apparatus configured to suck and eject the washed filter medium discharged from the inside of the rotary sieve through the filter. A reclaimed filter medium accommodating portion for accommodating the filter medium ejected from the second jet pump,
The regenerated filter medium storage portion is a water-permeable filter medium storage bag that stores the filter medium, a permeate tank that stores the filter medium storage bag and stores water that has permeated the filter medium storage bag, and the permeated water tank The filter medium recycling device according to claim 1, further comprising a return pump for returning the water to the water tank.

Images