JP3636205B1 - Filter media washing and sorting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter medium washing and sorting device capable of efficiently sorting and washing filter media even when filter media of different sizes and particle sizes are mixed in filter ponds such as water purification plants and drainage plants. provide.
SOLUTION: A primary washing pump 12 for sucking a filter medium, a primary vibration sieving machine 14 for applying vibration to the sucked filter medium and sieving, and a coarse sorting unit provided in the primary vibration sieving machine 18, A primary receiving tank 14 installed below the coarse sorting screen, a secondary cleaning pump for cleaning while sucking the filter medium in the primary receiving tank, and a primary vibrating sieve 18 are arranged adjacent to 2. The secondary vibration sieving machine 16 and a tertiary cleaning pump connected to a secondary cleaning pump for cleaning the filter medium are provided, and each member is mounted on a vehicle.
[Selection] Figure 1

Description

  The present invention relates to a filter medium cleaning and sorting apparatus, and particularly used as a filter medium and an adsorbent for purifying water in water purification plants and wastewater treatment plants, for example, ceramic materials, resin materials, wood materials, cobblestones, gravel, sand, Filter medium cleaning suitable for sorting filter media or adsorbents by particle size and cleaning the selected filter media or adsorbents when filter media or adsorbents with different particle sizes such as manganese sand are mixed. It relates to a sorting device.

When purifying water at a water purification plant, raw water is sent to the filter pond, fine suspended matters are removed through the filter medium of the filter pond, and the filtered water is supplied as tap water by chlorination. . As a filter medium of such a filter pond, what has a particle size of about 0.6 mm-30 mm, such as filter sand, such as manganese sand, gravel, and a cobblestone, is used. Such a filter medium needs to be periodically cleaned of adhering dirt, and is an indispensable operation in a water purification plant.
In recent years, such a filter medium cleaning device has been installed in a water purification plant in advance, and a water purification plant having facilities capable of performing a cleaning operation between water purification operations has been constructed. In many cases, it is necessary to replace the filter medium or to remove the filter medium from the filter basin and perform cleaning.

As cleaning methods for the filter medium, a surface cleaning method and a backflow cleaning method are known. The surface cleaning method is a method of cleaning by hitting the surface of the sand, and the backflow cleaning method is to inject clean water from the lower part of the filter basin to float the filtered sand, and squeeze the sand together to clean the dirt. Is the method. Conventionally, the invention described in Japanese Patent Application Laid-Open No. 2001-38120 is known as a filtration sand washing method. This method is to wash the filtered sand by a method other than surface cleaning and backwashing. Specifically, the sand sucked from the filter basin is sucked with a pump, and the sucked filtered sand is supplied to the sand cleaning device. Then, the sand is washed, the washed sand is stored in a stock tank, and the sand in the stock tank is returned to the filter basin during backwashing of the filter basin. In other words, the invention described in this publication repeats the suction, washing, and returning of the filtration sand in the backwashing, thereby automatically washing the filtration sand in the filtration basin and extending the period of rehabilitation work of the filtration pond. It is a method aimed at that.
JP 2001-38120 A

However, the filtration sand washing method described in JP-A-2001-38120 described above eventually uses backwashing together, and therefore, when water is injected from the lower part of the filter basin during backwashing, it settles after washing. It was very difficult to spread the filter sand evenly on the bottom of the filter basin.
In particular, it is not suitable for a filter basin using several kinds of filter media having different particle diameters. As a result, it is necessary to perform cleaning for each particle diameter of the filter media, and there is a problem in achieving complete automation.
In addition, installation of each equipment such as a stock tank and a washing device in a water purification plant requires enormous costs, and existing water treatment plants have a sand washing device due to the installation space. There are many cases in which it is impossible to provide them separately.

  The present invention has been proposed to cope with such various situations, and even when filter media of different sizes and particle sizes are mixed in filter ponds such as water purification plants and drainage plants. An object of the present invention is to provide a filter medium cleaning and sorting apparatus capable of efficiently performing filtering and sorting of filter media.

In order to achieve the above object, the invention according to claim 1 is provided with a primary washing pump for sucking a filter medium from a filter basin, and a primary vibration sieving machine for applying a vibration to the sucked filter medium to screen. The primary vibration sieving machine has a coarse selection section having a coarse selection screen having a mesh for passing a filter medium having a particle size of A or less, and a mesh for passing a filter medium having a particle size of B or less smaller than the particle diameter A. And a first receiver for receiving a filter medium having a particle diameter of A or less selected by dropping through the coarse sorting screen below the coarse sorting screen. In addition to installing a tank and providing a secondary cleaning pump for cleaning while sucking the filter medium in the primary receiving tank, a secondary cleaning pump for further cleaning the filter medium is connected to the secondary cleaning pump, Secondary vibration sieve The filter medium that is disposed adjacent to the primary vibration sieve and that has not passed through the mesh of the coarse sorting screen is configured to be movable toward the secondary vibration sieve by vibration of the primary vibration sieve. In the secondary vibration sieving machine, at least one secondary screen having a mesh through which a filter medium having a particle size larger than the particle diameters A and B is passed is installed, and the secondary screen is used as the secondary vibration sieving machine. And at least one sorting section that sorts the filter medium for each predetermined particle size while being vibrated.

  A second aspect of the present invention is the method according to the first aspect, wherein the vacuum action suction device for conveying the filter medium from the filter basin to the rough sorting section is connected to the primary cleaning pump, and the vacuum action suction device has a mixing chamber. The mixing chamber is provided with a filter medium suction port to which a hose for sucking the filter medium is connected, and a water inlet port connected to the discharge side of the primary cleaning pump is disposed at the water inlet port. Is equipped with a nozzle for accelerating the flow velocity and configured to pump water through the nozzle into the mixing chamber, in which the filter medium and water are mixed, and further to the outlet of the mixing chamber. A spiral that connects a turbulent pipe and guides the filter medium to the coarse sorting section through the turbulent pipe, and generates turbulent flow in the water containing the introduced filter medium on the inner wall of the turbulent pipe While providing turbulent flow to the filter medium and water in the turbulent pipe Characterized in that the wood was guided to the coarse sorting section.

The invention according to claim 3 is the filter according to claim 1 or 2, wherein at least one of the primary vibration sieve and the secondary vibration sieve is provided with a filter medium on each screen from above the vibration sieve. High pressure water injection means for injecting high pressure water toward the surface, and cleaning the filter medium on each screen of the primary vibration sieve machine and the secondary vibration sieve machine with the high pressure water jetted by the high pressure water injection means It is characterized in that the water scale adhering to the surface of the large-diameter filter medium, the small-diameter filter medium, and the like are separated while being separated.

  According to a fourth aspect of the present invention, in the first to third aspects, the secondary cleaning pump is configured by connecting a plurality of sand pumps.

A fifth aspect of the present invention is characterized in that, in the fourth aspect, the sand pumps constituting the secondary cleaning pump have different inlet and outlet diameters.

  A sixth aspect of the present invention is characterized in that, in the fourth or fifth aspect, the sand pumps constituting the secondary cleaning pump are operated so as to have different rotational speeds.

A seventh aspect of the present invention is directed to the first to sixth aspects, wherein the filter medium cleaned by the tertiary cleaning pump is guided onto the B screen of the first sorting unit of the primary vibration sieving machine and has a particle size of B or less. The filter medium is selected and collected.

  The invention according to claim 8 is the first to seventh invention, wherein the primary vibration sieving machine, the primary receiving tank, the secondary vibration sieving machine, the secondary washing pump, the tertiary washing pump, and the high-pressure water injection means are It is mounted on one vehicle.

As described above, according to the first to seventh aspects of the present invention, the primary washing pump for sucking the filter medium from the filter basin is provided, and the filtered vibration is applied to the sucked filter medium and screened for selection. A sieving machine and a secondary vibration sieving machine are installed, and the selected filter medium is washed by a secondary washing pump. For this reason, it is possible to simultaneously clean and sort filter media such as water purification plants and filter basins of wastewater treatment plants, and adsorbents, and greatly reduce the labor required for washing and sorting.

  In particular, according to the first aspect of the present invention, a tertiary cleaning pump for further cleaning the filter medium is connected to the secondary cleaning pump. In addition, since the tertiary cleaning pump is a large-scale pump having a larger output than the secondary cleaning pump, there is an effect of removing deposits that could not be cleaned by the secondary cleaning pump from the filter medium.

  According to the second aspect of the present invention, the vacuum action suction device for transporting the filter medium from the filtration pond to the coarse sorting section is connected to the primary cleaning pump, and the pressure in the mixing chamber of the vacuum action suction device is reduced. The filter medium and water are sucked into the mixing chamber, and are further pumped from the mixing chamber to a sorting section that cleans and sorts the filter medium. As a result, the filter medium can be pumped directly from the filter basin toward the washing and sorting device, and the impact generated on the filter medium can be reduced, and damage to the filter medium can be prevented. In addition, a turbulent tube is connected to the discharge port of the vacuum action suction device, and the filter medium is guided to the sorting section through the turbulent pipe, so that the turbulent flow acts on the filter medium in the turbulent pipe, Since the filter medium moves in a complicated manner in the turbulent flow tube, the deposits on the surface of the filter medium are easily peeled off, and the filter medium can be roughly cleaned and sorted.

  According to the invention described in claim 3, high-pressure water injection means for injecting high-pressure water toward the filter medium on each screen is provided on at least one side of the primary vibration sieve and the secondary vibration sieve. ing. For this reason, while being able to wash | clean efficiently the filter medium on each screen of a primary vibration sieving machine and a secondary vibration sieving machine, the filter medium of various particle sizes is equalized, especially large-diameter filter medium It is possible to equalize while peeling off the water scale and small-diameter filter medium adhering to the surface.

  Furthermore, according to the invention described in claims 4 to 6, the secondary cleaning pump is constituted by connecting a plurality of sand pumps, and each sand pump has different inlet and outlet diameters and is operated. At times, the engine is operated such that the number of revolutions is different. As a result, it is possible to repeat the operation of increasing and decreasing the pressure applied to each sand pump, making it easier to peel off the dirt adhering to the surface of the filter medium and destroying the adhering substance itself. Adhesion can be prevented.

  In particular, according to the invention described in claim 8, the primary vibration sieving machine, the primary receiving tank, the secondary vibration sieving machine, the secondary washing pump, the tertiary washing pump, and the high-pressure water injection means are provided in one vehicle. Since it is installed, the filter media can be washed and sorted everywhere, and the cost required for washing and sorting in a water purification plant or the like where no filter media washing facility is installed can be greatly reduced.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a filter medium cleaning and sorting apparatus according to the invention will be described with reference to the accompanying drawings.

  1 is a perspective view showing a filter medium cleaning and sorting apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram showing a schematic configuration of the filter medium cleaning and sorting apparatus, and FIG. 3 is a diagram of a vehicle loaded with the filter medium cleaning and sorting apparatus. 4 is a left side view of the vehicle, and FIG. 5 is a rear view of the vehicle as viewed from the rear.

As shown in FIGS. 1 and 2, the filter medium cleaning and sorting apparatus 10 is an on-vehicle type in which the entire apparatus is loaded on a truck, and mainly includes a primary cleaning pump 12, a primary vibration sieving machine 14, The secondary vibration sieving machine 16, the primary receiving tank 18, the secondary cleaning pump 20, and the tertiary cleaning pump 22 are configured. At the rear of the vehicle body 1, a staircase 3 capable of being folded and stored leading to a work corridor 2 provided in the vehicle body 1 is installed, and an operation control panel 4 for operating each device along the work corridor 2 is mounted. Yes. On the work corridor 2, the operator operates each device to carry out a cleaning operation such as a filter medium or an adsorbent.

  The primary cleaning pump 12 is installed at the rear part of the vehicle body 1 of the truck. The primary cleaning pump 12 has one end of a hose (not shown) connected to the suction port, and the other end of the hose is on the right side of the vehicle body 1. It is connected to a water supply tank 24 installed in the center of the surface, and the fresh water in the water supply tank 24 can be sucked by the primary cleaning pump 12. Although the water supply tank 24 is comprised from water tank 24A, 24B, 24C, between water tank 24A, 24B is only partitioned off with the mesh, and fresh water can come and go freely.

FIG. 6 is a view showing the vacuum action suction device 26. As shown in FIG. 3A, the vacuum suction device 26 is configured around a mixing chamber 26A, and the mixing chamber 26A has a total of three inlets: a water inlet 26B, a filter medium suction port 26C, and a discharge port 26D. , And an outlet. The hose 28 connected to the discharge port of the primary cleaning pump 12 is connected to the water introduction port 26B, and pumps the water in the water tank 24A to the water introduction port 26B.
As shown in FIG. 5B, a nozzle 29 for restricting the flow of water is attached to the inner wall of the water inlet 26B, and the water fed into the mixing chamber 26A is caused by the action of the nozzle 29. The flow velocity is accelerated, and the pressure in the mixing chamber 26A can be reduced to a level close to a vacuum.

A hose 30 for sucking the filter medium of the water purification plant filtration basin is connected to the filter medium suction port 26C of the mixing chamber 26A. Since the inside of the mixing chamber 26A is in a low pressure state close to vacuum, a negative pressure is applied to the hose 30. As a result, the filter medium can be sucked from the hose 30 into the mixing chamber 26A. In the mixing chamber 26A, the filter medium is mixed with water and sent from the discharge port 26D to the turbulent flow pipe 34, which will be described later, through the hose 32, and the filter medium passes through the turbulent flow pipe 34 and the primary vibrating sieve 14 It is supplied to the top and the filter medium is selected.
In this embodiment, a vacuum pump is used as the primary cleaning pump 12 that cleans and sucks the filter medium. The suction by the vacuum pump does not generate noise compared to the suction by the jet pump using an air compressor, and particularly vibration hardly occurs. Therefore, the vehicle body 1 and each device mounted on the vehicle body 1 are damaged. Can be prevented. Further, since the filter medium can be sucked together with water, there is an advantage that water becomes a buffer material and damage to the filter medium can be prevented.

  FIG. 7 is a cross-sectional view showing the turbulent tube 34. As shown in FIG. 5A, the turbulent pipe 34 is composed of a plurality of pipe members 36, and the flanges 36A are connected to each other with bolts and nuts to form one turbulent pipe 34. A spiral resistance blade 36B is fixed to the inner wall of the material 36 by welding or the like. As shown in FIG. 7B, the resistance blade 36B has a shape similar to a screw without a core, so that water can pass through the pipe material 36 while receiving resistance by the resistance blade 36B. It has become. That is, when water passes through the turbulent flow pipe 34, a rotational force acts on the water by the resistance blade 36B, and turbulence is generated in the filter medium introduced together with the water, while the discharge port 36C provided in the left pipe member 36 is provided. Is discharged. As shown in FIG. 1, the turbulent pipe 34 is attached above the primary vibration sieve 14 and discharges the filter medium together with water from the discharge port 36 </ b> C toward the screen of the primary vibration sieve 14.

As shown in FIGS. 1 and 3, the primary vibration sieving machine 14 has a main body 15 on a portal frame 38 erected on the vehicle body 1 via a total of eight springs 40 in total. It is attached so that it can vibrate. Similarly, the secondary vibration sieving machine 16 is attached to the frame 41 through the spring 40 so as to be vibrated. Note that the frame 41 is lower in height than the frame 38.
A motor 42 for applying vibration is attached to the upper part of each main body 15 of the primary vibration sieving machine 14 and the secondary vibration sieving machine 16, and the motor 42 has two semicircular weights on the rotating shaft, Asymmetrically eccentrically attached, the motor 42 itself vibrates when the motor 42 rotates, and as a result, the entire main body 15 is vibrated.

FIG. 8 is a plan view of the entire apparatus as viewed from above. As shown in FIG. 8, the main body 15 has a coarse sorting screen 44 having a mesh through which a filter medium having a particle size A (for example, 2.5 mm) or less passes. And a first sorting unit including a B screen 46 having a mesh through which a filter medium having a particle size B smaller than the particle size A (for example, 1.5 mm) or less is passed. Both the coarse sorting screen 44 and the B screen 46 vibrate together with the filter medium by vibrating the main body 15 by the motor 42, and the filter medium is sieved and sorted according to particle size.

As shown in FIGS. 1 and 4, below the coarse sorting screen 44, an inverted quadrangular pyramid that guides the filter medium having a particle size of A or less that has passed through the mesh of the coarse sorting screen 44 to the primary receiving tank 18 below. The funnel part 48 is installed. Water also drops into the primary receiving tank 18 together with the filter medium. The primary receiving tank 18 is provided with a filter medium water supply pipe 50 communicating with the secondary cleaning pump 20, and the filter medium having a particle size of A or less accumulated in the primary receiving tank 18 is sucked together with water to the secondary cleaning pump 20 side. It has come to be.

FIG. 9 is an exploded perspective view showing the relationship between the primary vibration sieving machine 14 and the secondary vibration sieving machine 16 and the high-pressure water jetting means 54 and the like. As shown in the figure, high-pressure water injection for injecting high-pressure water above the primary vibration sieving machine 14 and the secondary vibration sieving machine 16 toward the filter medium on each screen from above each vibration sieving machine. Means 54 are provided. The high-pressure water injection unit 54 includes a high-pressure water injection pump 56 erected at the rear portion of the vehicle body 1 (see FIG. 3), a water guide pipe 58, and a nozzle 60. The high-pressure water injection pump 56 is connected to a pipe (not shown) so that fresh water is supplied from the water supply tank 24 to the suction port, and a water pipe 58 is connected to the discharge port. As shown in FIG. 9, the water conveyance pipe 58 is branched into nine water conveyance pipes 58 </ b> A to 58 </ b> I above the primary vibration sieving machine 14 and the secondary vibration sieving machine 16. High pressure water is sprayed onto the coarse sorting unit and the first sorting unit and onto the second to fifth sorting units of the secondary vibrating sieve 16 like a shower.

The high-pressure water sprayed to each sorting unit cleans the filter media on the screens of the primary vibrating sieve 14 and the secondary vibrating sieve 16 with fresh water and equalizes them with water pressure, thereby improving the accuracy of sorting by the screen. Improve. Since the water sprayed from the nozzle 60 does not diffuse in a conical shape, it diffuses in a substantially fan shape and is ejected linearly at an angle substantially perpendicular to the direction of travel of the filter medium. To concentrate. For this reason, since the filter media on the coarse sorting screen 44 and the B screen 46 are dispersed and dispersed while the filter media are cut by the spray water, the washing water sufficiently permeates the filter media and spreads. It is possible to efficiently select and wash the filter medium. Each of the nine injection pipes 58A to 58I is equipped with a valve 62A to 62I capable of adjusting the flow rate, and adjusts the flow rate of the water to be injected while confirming the state of washing and the state of selection with sight. It is possible to do.

The secondary vibration sieving machine 16 is disposed adjacent to the primary vibration sieving machine 14, and a secondary screen having a mesh larger than that of the coarse sorting screen 44 and the B screen 46 is attached. The secondary screen is composed of a total of four sheets: a C screen 64 as a second sorting unit, a D screen 66 as a third sorting unit, an E screen 68 as a fourth sorting unit, and an F screen 70 as a fifth sorting unit. For example, the C screen 64 is set to a mesh through which a filter medium having a particle size of 5 mm is passed, the D screen 66 is a mesh through which a filter medium is passed up to 8 mm, the E screen 68 is a mesh through which a filter medium is passed up to 11 mm, for example, and the F screen 70 is For example, each mesh is set to pass through a filter medium of up to 15 mm. Since the secondary vibration sieving machine 16 is located slightly below the primary vibration sieving machine 14, the filter medium that has not been selected by the primary vibration sieving machine 14 is subjected to vibration by the secondary vibration sieving machine 14 side. It moves, is sorted for each particle size described above, slides down the discharge ports 72, 74, 76.78 provided inclined from the funnel portion, and is discharged to the outside of the apparatus.

FIG. 10 is a layout view showing the installation state of each pump. As shown in the figure, the secondary cleaning pump 20 is configured by arranging five sand pumps 20A to 20E in parallel, and these sand pumps 20A to 20E are installed in a water tank 24B on the vehicle body 1. Yes.
As shown in FIGS. 3 and 10, the filter medium water supply pipe 50 piped from the primary receiving tank 18 is connected to the primary suction port 80 of the sand pump 20 </ b> A. The discharge port of the sand pump 20A is connected to the suction port of the adjacent sand pump 20B. The discharge port of the sand pump 20B is the suction port of the sand pump 20C, the discharge port of the sand pump 20C is the suction port of the sand pump 20D, and the discharge port of the sand pump 20D is the suction port of the sand pump 20E. The sand pumps 20A to 20E constituting the cleaning pump 20 are connected.

  The diameters of the suction ports and the discharge ports of the sand pumps 20A to 20E are different, and the rotational speeds of the sand pumps 20A to 20E can be arbitrarily changed by inverter control. The operating condition is the optimal condition according to the contamination condition of the filter medium, the processing amount, and the like. In the present embodiment, the secondary cleaning pump 20 is composed of five sand pumps. However, in a water purification plant with a clear water quality, it is possible to clean even five or less, while the degree of contamination as in a wastewater septic tank is low. In a high facility, a predetermined cleaning ability can be secured by increasing the number of sand pumps.

As shown in FIGS. 3 and 10, a tertiary cleaning pump 22 is installed in the water tank 24 </ b> C on the side of the secondary cleaning pump 20, and from the discharge port of the pump 20 </ b> E of the secondary cleaning pump 20. The extending filter medium water supply pipe 82 has its tip positioned above the hopper 84 that communicates with the suction port of the tertiary cleaning pump 22, and guides the secondary cleaned filter medium from the hopper 84 to the tertiary cleaning pump 22 that is a sand pump. It is like that. The height of the water tank 24C is lower than that of the water tank 24B, and water can enter and exit from the water tank 24B. The tertiary cleaning pump 22 is a larger pump than the secondary cleaning pump 20 and has a stronger applied pressure, so that the deposits that could not be peeled off by the secondary cleaning pump 20 are crushed and a high cleaning effect is obtained. be able to. The tertiary cleaning pump 22 is connected to a small-diameter filter medium discharge port 86 (see FIG. 9) whose discharge port is piped on the first sorting unit of the primary vibrating sieve 14, and is pumped from the tertiary cleaning pump 22. After the filter medium is sorted again, it is discharged from the outlets 52, 72, 74, 76.78.

  The operation of the entire system when the filter medium (or adsorbent) is cleaned using the filter medium cleaning and sorting apparatus of the present embodiment configured as described above is as follows.

  First, the filter medium together with the water is sucked from the filtration pond such as a water purification plant by the vacuum action suction device 26 connected to the primary cleaning pump 12 without selecting the size. The filter medium sucked by the vacuum action suction device 26 is sent to a turbulent flow pipe 34 installed on the upper side of the primary vibrating sieve 14. As shown in FIG. 7, since the resistance blade 36B is provided inside the turbulent flow pipe 34, the turbulent flow acts on the filter medium in the turbulent flow pipe 34 and spirals and advances in the pipe. Go.

At that time, the filter medium having a large particle diameter spreads outward by centrifugal force in the turbulent flow pipe 34 and comes into contact with the wall surface of the turbulent flow pipe 34, so that the filter medium having a small particle diameter is first sent toward the coarse sorting section. Will go. Further, since the filter medium moves in a complicated manner in the turbulent flow pipe 34, there is an effect that the deposits on the surface of the filter medium are easily peeled off. In the coarse sorting section, a small-diameter filter medium having a particle size of 2.5 mm or less is selected, for example, and falls to the lower primary receiving tank 18 through the mesh of the coarse sorting screen 44. When the filter medium is discharged from the turbulent flow pipe 34 toward the coarse selection section, the filter medium is discharged in order from the smaller particle diameter, so that it is easy to select the filter medium for each particle diameter, and the accuracy of the selection is improved.

A filter medium having a particle size of 2.5 mm or more moves from the coarse sorting section to the first sorting section by vibrations from the primary vibrating sieve 14. At that time, the filter media of various sizes are mixed and moved, and the nozzle of the high-pressure water injection means 54 provided on the upper part of the primary vibration sieving machine 14 and the secondary vibration sieving machine 16. The high-pressure water sprayed in a fan shape from 60 is almost perpendicular to the direction of movement of the filter medium and linearly forms a wall, and the filter medium that has moved in groups is dispersed to the left and right here, and the high-pressure water is Will receive a jet of water for a while. Due to this action, sand that has conventionally adhered to the surface of the large-diameter filter medium together with scale etc. and was difficult to be separated is easily separated from the large-diameter filter medium. Thus, it can be easily separated and washed.

  After a small-diameter filter medium having a diameter of 2.5 mm or less is selected in the coarse selection section, the remaining filter medium is advanced to the secondary vibration sieve machine 16 side by vibrations from the primary vibration sieve machine 14. At this time, the remaining filter medium passes over the B screen 46 of the first sorting section, but the mesh of the B screen 46 is smaller than 2.5 mm of the coarse sorting screen 44, for example, 1.5 mm. Therefore, there are very few filter media to be sorted by the first sorting section, and most of the filter media moving to the secondary vibration sieving machine 16 side are large-diameter filter media.

Even on the secondary vibrating sieve 16, the high-pressure water jet sprayed from the high-pressure water jetting means 54 is dispersed while being cut in small portions, and is evenly divided. Can be improved. The filter medium sent to the secondary vibration sieving machine 16 is sorted for each particle size corresponding to the mesh size of each screen 64, 66, 68, 70 while moving from the second sorting unit to the fifth sorting unit. However, at this time as well, the high pressure water received from the high pressure water injection means 54 strikes the filter medium, so that the filter medium diffuses and spreads on the screens 64, 66, 68 and 70. As the filter medium on each screen proceeds from the second sorting section to the fifth sorting section, the mesh of the screens 64, 66, 68, 70 gradually increases, and the filter medium smaller than the mesh of each screen is the upper part of each sorting section. After being sufficiently washed by the high-pressure water injection means 54, it is sieved by vibration, passes through the screen mesh, and is discharged from the funnel portion to the outside of the apparatus through the discharge ports 72, 74, 76, 78. The Each surface of the funnel part of each discharge port 72, 74, 76, 78 is mesh-shaped, and when passing the small diameter filter medium mixed in the filter medium sieved by each screen through the funnel part The screening ability is further improved. The filtered filter material is collected and returned to the primary receiving tank.

  The small-diameter filter medium having a diameter of 2.5 mm or less dropped in the primary receiving tank 18 is sent from the filter medium water supply pipe 50 to the secondary cleaning pump 20 installed in the water tank 24C. As described above, the secondary cleaning pump 20 is configured by arranging five sand pumps 20A to 20E in parallel, and each sand pump is connected to adjacent sand pumps, and the rotational speeds thereof are different from each other. Is set. The rotation speed is set between adjacent sand pumps so that when one sand pump is at a high rotation speed, the next sand pump is slow, and the rotation speed is individually set by an inverter built in the operation control panel 4. It can be freely changed for each sand pump, and is set to an appropriate number of revolutions depending on the processing amount and the degree of contamination. Each of the sand pumps 20A to 20E has a high pressure applied to the inside of each of the sand pumps 20A to 20E due to the difference in the diameter between the suction port and the discharge port and the rotational speed of the sand pumps 20A to 20E. Thus, it is possible to repeat the operation of increasing the pressure and decreasing the pressure, thereby making it easy to remove the dirt adhering to the surface of the filter medium. Moreover, since the deposit itself is destroyed by repeating the pressurization and depressurization, the reattachment to the filter medium can be prevented.

  The filter medium that has passed through the secondary cleaning pump 20 is sent to the tertiary cleaning pump 22 and the third cleaning is performed. The tertiary cleaning pump is pumped from the tertiary cleaning pump 22 because the discharge port is connected to the small-diameter filter medium discharge port 86 (see FIG. 9) piped on the first sorting unit of the primary vibrating sieve 14. The filtered medium is sent from the small-diameter filter medium discharge port 86 onto the first sorting unit, and then has a mesh through which the filtering medium having a particle size B smaller than the particle size A of the first sorting unit (for example, 1.5 mm) is passed. Sorted again by the B screen 46 and discharged to the outside of the apparatus.

Here, the relationship between the coarse sorting screen 44 of the coarse sorting unit and the B screen 46 of the first sorting unit is as follows. Originally, most of the filter media used in the water purification plant are 1.5 mm or less, so the amount of the filter media screened off from the coarse sorting screen 44 set to a 2.5 mm mesh is inevitably increased. On the other hand, if the mesh of the coarse sorting screen 44 is set to 1.5 mm, a wide range of particle sizes from small to large filter media are mixed in the coarse sorting stage. The possibility of clogging the mesh becomes very high, and the efficiency of sieving is greatly reduced, such as the fact that the most frequently used filter medium of 1.5 mm or less is dropped in a small amount. Therefore, it has been experimentally confirmed that, in the coarse sorting stage, setting the mesh of the screen 44 to around 2.5 mm prevents clogging of the mesh and can efficiently sort the small-diameter filter medium. Therefore, the screen 44 is set to a mesh having a size of 2.5 mm. That is, in the coarse sorting step, the screen 44 is sorted by a slightly larger mesh screen 44, cleaned by a secondary cleaning pump 20 and a tertiary cleaning pump 22, which will be described later, and then cleaned again by the first sorting unit 1. The filter medium of 1.5 mm or less is again screened off by the 5 mm B screen 46.

As described above, according to the filter medium cleaning and sorting apparatus of the present embodiment, it can be performed simultaneously with the filtering and cleaning of the filter medium, greatly reducing the load required for the maintenance of the filter medium in water purification plants, drainage plants, etc. Can do. In addition, because the cleaning and sorting device is on-board, the filter media can be cleaned and sorted everywhere, greatly reducing the cost of cleaning and sorting in water purification plants where filter media cleaning facilities are not installed. can do.

  In this embodiment, the case of mainly cleaning the filter medium of the water purification plant has been described, but the present invention is not limited to this, and it is of course possible to use it for cleaning / sorting of the filter medium and the adsorbent in the wastewater treatment plant. is there. Further, the present invention can be applied to cleaning and sorting of any filter medium or adsorbent such as ceramic material, resin material, wood material, cobblestone, gravel, sand, manganese sand, etc. in addition to sand as a filter medium.

As described above, according to the present invention, even when filter media of different sizes and particle sizes are mixed in filter ponds such as water purification plants and drainage plants, the filter media can be efficiently selected and washed. This can be done, and it is possible to greatly reduce the labor and cost required for the maintenance work of the water purification plant and the like.

It is a perspective view which shows the filter-medium washing | cleaning selection apparatus which concerns on one Embodiment of this invention. Similarly, it is a block diagram showing a schematic configuration of a filter media cleaning and sorting apparatus. Similarly, it is a right side view of a vehicle loaded with a filter medium cleaning and sorting device. Similarly, it is a left side view of a vehicle loaded with a filter media cleaning and sorting device. Similarly, it is the rear view which looked at the vehicle carrying the filter medium washing | cleaning sorting apparatus from back. FIG. 6A is a schematic perspective view, and FIG. 6B is a cross-sectional view of the vicinity of the mixing chamber which is a main part. It is sectional drawing which showed the turbulent flow pipe, among these, FIG. 7 (A) is a sectional side view, FIG.7 (B) is an arrow sectional view along the 7B line | wire of FIG. 7 (A). It is the top view which looked at the whole filter-medium washing | cleaning sorting apparatus which concerns on one Embodiment of this invention from upper direction. It is a disassembled perspective view which shows the relationship between a primary vibration sieving machine and a secondary vibration sieving machine, a high pressure water injection means, etc. It is the layout which showed the installation state of each pump.

Explanation of symbols

1 body
2 work walkway
3 stairs
4 Operation control panel
10 Filter media washing and sorting device
12 Primary cleaning pump
14 Primary vibration sieve
16 Secondary vibration sieving machine
18 Primary receiving tank
20 Secondary cleaning pump
20A-20E Sand pump
22 Tertiary cleaning pump
24 Water tank
24A-24C Water tank
26 Vacuum action suction device 26A Mixing chamber 26B Water inlet 26C Filter medium suction port 26D Discharge port
28 30 32 hose
29 nozzles
34 Turbulent tube
36 Pipe material 36A Flange
36B resistance blade
36C outlet
38 41 frames
40 Spring
42 motor
44 Coarse sorting screen
46 B screen
48 Funnel
50 Filter media water pipe
52 outlet
54 High pressure water injection means
56 High pressure water injection pump
58A ~ 58I Injection pipe
58 Water transfer pipe
60 nozzles
62A ~ 62I Valve
64 C screen
66 D screen
68 E screen
70 F screen
72-78 outlet
80 Primary inlet
82 Filter media water pipe
84 Hopper
86 Small-diameter filter media outlet

Claims (8)

A primary washing pump for sucking the filter medium from the filtration pond is provided, and a primary vibration sieving machine is provided for applying vibration to the sucked filter medium and sieving, and the primary vibration sieving machine has a particle size of A or less. While disposing a coarse sorting section having a coarse sorting screen having a mesh through which the filter medium passes, and a first sorting section having a B screen having a mesh through which the filter medium having a particle size B smaller than the particle diameter A is passed,
A primary receiving tank for receiving a filter medium having a particle size of A or less selected by dropping through the coarse screening screen is installed below the coarse screening screen, and the filter medium in the primary receiving tank is sucked. A secondary cleaning pump for cleaning is provided, and a tertiary cleaning pump for further cleaning the filter medium is connected to the secondary cleaning pump,
A secondary vibration sieving machine is disposed adjacent to the primary vibration sieving machine, and the filter medium that has not passed through the mesh of the coarse sorting screen is moved to the secondary vibration sieving machine side by vibration by the primary vibration sieving machine. The secondary vibration sieve is provided with at least one secondary screen having a mesh through which a filter medium having a particle size larger than the particle sizes A and B is passed. A filter medium cleaning and sorting apparatus comprising at least one sorting section that sorts a filter medium for each predetermined particle size while being vibrated by the secondary vibrating sieve. A vacuum working suction device for transporting the filter medium from the filtration pond to the coarse sorting section is connected to the primary cleaning pump, the vacuum working suction device has a mixing chamber, and a hose for sucking the filtering material into the mixing chamber A filter medium suction port connected to the primary cleaning pump and a water inlet port connected to the discharge side of the primary cleaning pump. A nozzle for accelerating the flow velocity is attached to the water inlet port, and water is passed through the nozzle. The filter medium and water are mixed in the mixing chamber, and a turbulent tube is connected to the outlet of the mixing chamber to connect the turbulent tube. The filter medium is guided to the rough sorting section, and a spiral resistance blade is provided on the inner wall of the turbulent flow pipe to generate turbulence in the water containing the introduced filter medium, and the filter medium is provided in the turbulent flow pipe. The filter medium is guided to the coarse sorting section while generating turbulent flow in water and water. Filter media cleaning sorting apparatus of claim 1 wherein symptoms.   At least one side of the primary vibration sieve and the secondary vibration sieve is provided with high-pressure water injection means for injecting high-pressure water from above the vibration sieve toward the filter medium on each screen, The high-pressure water sprayed by the high-pressure water spraying means cleans the filter media on the screens of the primary vibration sieve and the secondary vibration sieve and peels off the scales and small-diameter filter media attached to the surface of the large-diameter filter media. The filter medium cleaning and sorting apparatus according to claim 1, wherein the filter medium is sorted while being uniformed.   The filter medium cleaning and sorting apparatus according to claim 1, wherein the secondary cleaning pump is configured by connecting a plurality of sand pumps.   5. The filter medium cleaning and sorting apparatus according to claim 4, wherein each sand pump constituting the secondary cleaning pump has different inlet and outlet diameters. 6. The filter medium cleaning and sorting apparatus according to claim 4, wherein each sand pump constituting the secondary cleaning pump is operated so as to have a different rotation speed.   2. The filter medium cleaned by the tertiary cleaning pump is guided onto a B screen of a first selection unit of the primary vibrating sieve to select and collect a filter medium having a particle size of B or less. The filter-medium washing | cleaning selection apparatus of ~ 6. The primary vibration sieving machine, the primary receiving tank, the secondary vibration sieving machine, the secondary washing pump, the tertiary washing pump, and the high-pressure water injection unit are mounted on one vehicle. Item 8. A filter medium cleaning and sorting apparatus according to Item 1-7.