JPS6238210A - Removing method of sedimentary substance in water tank and its device - Google Patents

Abstract

PURPOSE:To effectively suck and remove and enhance the efficiency of cooling tower and the like by forming a washing liquid flow compulsorily along the bottom face of water tank toward the suck-outlet of sand and mud. CONSTITUTION:The sedimentary subject derived from the cooling water contaminated by the dust and other foreign elements mixed-in during the operation of cooling tower and the like and accumulated on the bottom face 11 of the water tank 10 is pushed and washed with the washing liquid flow out of the respective delivery opening 14 of delivery tube 13. The sand and mud deposited into the suck-outlet 12 are drained into the suck-out solid fluid separator 15 together with the water flowing through the suck-out guide line 23. Next, the sedimentary substances such as sand and mud separated from water with the solid separator 15 are drained out and removed and water only is returned back to the water tank 10 through the connecting tube 17. The water tank 10 can remove the sedimentary substance accumulated on the bottom 11 of water tank, keeping function for the water supply tank and the lower water tank of heat exchange tower.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention provides a method for automatically removing sand, mud, etc. accumulated in a water tank, particularly in a lower water tank of a water tower, a cooling tower for air conditioning, and a heat exchange tower. and its apparatus.

Conventional technology and its problems In this type of aquarium, the water becomes dirty due to dust contained in the outside air, collects in the aquarium, becomes mud, and flows into the water circulation circuit, causing problems in these circulation devices. damage and reduce heat exchange rate. This tendency is noticeable in volcanic ash areas and desert areas.

The applicant company developed a cooling tower that allowed such mud to settle in the water tank and prevent it from flowing into the circulation circuit, and filed Utility Model Application No. 55-23636.
Although the application was filed as Publication No. 9) and the initial effect was achieved,
When cleaning and removing mud, etc. adhering to the sloped bottom plate that receives water flowing down from the filler, the operation of the cooling tower should be temporarily stopped, and the water in the drop tank connected to the sloped bottom plate through a weir plate should be drained. After opening the sludge outlet provided on the sloped bottom plate near the weir plate and discharging the settled sludge, it is necessary to supply washing liquid to the sloped bottom plate from the washing water supply port for cleaning, which is time-consuming and requires a lot of time in the cooling tower. must be stopped during the cleaning period, reducing operational efficiency, and the structure of the existing drop tank must be changed due to the placement of the weir plate, making it easy to replace the existing drop tank. It is not possible to add a function to remove mud, etc.

(Purpose) The present invention solves the above-mentioned problems, and provides a cooling tower with the ability to remove mud and other deposits without any modification to the bottom of the existing water tank (or with a slight modification). The main object of the present invention is to provide a method and an apparatus for efficiently cleaning the bottom surface of an aquarium without stopping the operation of the tank.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method for dispensing water over almost the entire area of the bottom of the tank toward the sand and mud suction section formed in a part of the bottom of the tank below the liquid level. This is a method for removing deposits in an aquarium, characterized by forcibly forming a stream of cleaning liquid in the aquarium that flows along the bottom surface of the aquarium, and removing the deposits by suction to the outside of the aquarium.

In the second invention, a sand and mud suction part is provided in a part of the bottom of the aquarium, and below the liquid level of the aquarium, at a position slightly separated from the bottom of the aquarium, there is a washing liquid having an arbitrary number of washing liquid discharge holes. A discharge pipe is sunk over the entire bottom surface of the water tank, and the washing liquid discharge holes are arranged in a g-average distribution over the entire bottom surface of the water tank, and each of the washing liquid discharge holes is directed downward from the horizontal direction. , and is directed substantially toward the sand and mud suction section, and the sand and mud suction section is connected to a primary side of a suction type solid-liquid separator.

The third invention is a lower water tank that is parallel to one side of a rectangular planar lower water tank used in a type of air conditioning cooling tower or heating tower.
A sand and mud suction part with a length corresponding to the entire length of this side is provided on the bottom surface of the aquarium, and the bottom surface of the suction cover plate forming this sand and mud suction part is parallel to the bottom surface of the aquarium. A suction port is provided in the center, and a suction port is connected to the suction port, and the bottom surface of the suction cover plate is provided with several short protrusions of equal height toward the suction port.
Several suction guide paths are formed between these protrusions and in the gap between the bottom surface of the water tank and the bottom surface of the suction cover plate,
The apparatus for removing deposits in an aquarium is characterized in that the suction ports of these suction guideways are distributed over the entire length of one side of the aquarium.

Next, a typical embodiment of the second device invention among the above inventions will be explained based on the drawings together with a typical embodiment of the third device invention.

In Figures i1 to 5, 10 is a lower water tank for the cooling tower, and the planar shape of this water tank 10 is rectangular.
The bottom surface 11 of 0 is formed, and the remaining bottom surfaces 11 are horizontal.

A sand and mud suction section 12 for sucking out sediments such as mud is provided in the center of the bottom surface 11, parallel to the short side of the water tank 10, and the length of this suction section 12 is equal to the length of this short side. It is the same. On both sides of this central part as a border, the water tank 10
At a position slightly away from the bottom surface 11 of the water tank 10'' under the liquid level, there are a plurality of cleaning liquid discharge pipes 13 (eight in the figure).
are placed horizontally parallel to each other over the entire bottom of the tank.

A plurality of discharge holes 14 bored at equal pitches in each discharge pipe 13
The sand and mud suction portion 12 is directed downward from the horizontal direction.
The upstream ends of these discharge pipes 13 are
They are each connected to a common lug extending along one long side of the water tank 10 and communicated with a cleaning liquid supply source (not shown).

This is the angle that passes through the lower side.

The primary side of this solid-liquid separator 15 communicates with the sand and mud suction section 12 via a suction pipe or hose 16, and its secondary side liquid discharge port is connected to a water discharge section 17 that opens on the side wall of the water tank 10. A thread path is formed that communicates with the pipe 18 and returns the separated water to the water tank IO. The position of the sand and mud suction unit 12 may be along one short side of the water tank 10,
Further, the secondary liquid discharge port of the solid-liquid separator 15 is opened to the outside to discharge the liquid, and the temperature is also the same as that of the second device invention. Further, the suction port 12a of the sand and mud suction unit 12 may be provided to penetrate the side plate or the bottom plate of the water tank 10.

The bottom surface of the suction cover plate 20 forming the sand and mud suction section 12 is parallel to the bottom surface 11 of the water tank 10, and a suction port 12a of the sand and mud suction section 12 is provided in the center of the suction cover plate 20. 21 is bored, and this suction port 21
Short protrusions 22 of equal height are provided on the bottom surface of the suction cover plate 20 in a radial direction toward the bottom surface of the suction cover plate 20. Several suction guide passages 23 are formed in the gaps between them, and the suction ports 23a of these suction guide passages 23 are distributed over the entire length of the short side of the water tank 10.

On the upper surface of this sand and mud suction cover plate 20, there is a pair of left and right inverted U's.
A fourth handle is fixed upright, and inward protrusions 27 and 28 that are inclined at 945 degrees over the entire length are symmetrically arranged on a pair of long sides 25 and 26 of the sand and mud suction cover plate 20, and 10, this sand and mud suction cover plate 20 is removably installed in the center of the bottom surface 11 of the water tank 10 with the protrusion 22 facing downward, and when installed, the long side 25.2
6 is the water 'JP? It is set parallel to the short side of J10.

The sand cutting cover plate 30 placed so as to cover the upper surface of the sand and mud suction cover plate 20 is made of a shaped material having a chevron-shaped cross section, and has an inverted U-shaped handle 31 at the center of the top.
A pair of left and right inclined surfaces 32.33 of this sand cutting cover plate 30 are each inclined at 45 degrees, and are spaced apart in the longitudinal direction near the lower ends 32a, 33H of each inclined surface 32.33. Several (four in the illustrated case) support plates 34 with a wide cross section are installed between the left and right inclined surfaces 32 and 33.
ing.

The width dimension of the sand cutting cover plate 300, that is, the left and right inclined surfaces 3
2.33 The width dimension between the lower ends 32a and 33a is formed to correspond to the width dimension bo of the sand and mud suction cover plate 200,
The lower ends 32a, 33a of these inclined surfaces 32.33 and the lower surface of the horizontal side 35 of the support plate 34 are located in the same plane, and both ends 36.37 of each support plate 34 and each inclined surface 32.3 are located in the same plane.
3. On the inner surface, a pair of left and right inward protrusions 27.28 of the sand and mud suction cover plate 20 are attached to the roots 38.39 so that they can be freely engaged with each other.
5 is freely disposed integrally at the upper end of the sand and mud suction cover plate 20.

(Function and Method for Removing Aquarium Deposits) Next, the function of the device invention having the above structure and the method invention will be explained.

First, the suction cover plate 20 was placed on the bottom surface of the aquarium 10, and the sand cutter cover plate 30 was placed on the suction cover plate 20, and the upper surface of the suction cover plate 20 was covered with the sand cutter cover plate 30. The water tank 10 is filled with water, and the cooling water or water to be cooled that has flowed down the cooling tower filler is collected in the water tank 10 and circulated through the upper water tank of the cooling tower or the refrigerator trap.

During the operation of the cooling tower, the cooling water becomes dirty due to dust mixed into the outside air, turns into mud, and deposits such as mud that accumulates on the bottom surface 11 of the water tank 10 are sucked out from each discharge hole 14 of the discharge pipe 13. The sand and mud collected in the sand and mud suction part 12 are washed away by the washing liquid flowing along the bottom surface 11 toward the sand and mud suction part 12, and together with the water flow flowing through the suction guideway 23, the suction type solid-liquid separator Sucked out at 15.

At this time, since the upper surface of the suction cover plate 20 in the sand and mud suction section 12 is covered by the sand cutting cover plate 30,
The sand, mud, and other deposits that are about to accumulate on the sand and mud suction unit 12 are distributed to the left and right sides of the suction cover plate 20 along the pair of left and right sloped sides of the sand cut cover plate 30, and are sand-cut. The sand, mud, and other deposits do not concentrate on the outer periphery of the suction port 23a of the suction guideway 23 and accumulate on the top of the sand and mud suction section 12, and the top of the sand and mud suction section 12 is always in a clean state. will be maintained.

Next, sediments such as sand and mud separated from water in the suction type solid-liquid separator 15 are discharged to the outside and removed, and only water is passed through the connecting pipe 17 to the water discharge part 1 on the side wall of the water tank 10.
6, this water tank 1 is returned to the refrigerator, etc. as cooling water again.
It is supplied from 0 and circulates.

When the suction cover plate 20 and the sand cutter cover plate 30 become dirty or damaged due to long-term use and need to be replaced,
Take them out of the water tank 10 separately and clean them or replace them with new ones.

In the description of the embodiment described above, the water tank 10 was used as the lower water tank of the cooling tower, but the present invention is the same even if it is a water supply tank for water supply or a lower water tank of a heat exchange tower.

In the embodiment described above, the water tank 10 has a rectangular planar shape, but it may also be cylindrical, and an embodiment has been described in which eight washing discharge pipes 13 are arranged in parallel. A cleaning discharge pipe 13 is equipped so as to be horizontally reciprocating from the short side of the bottom of the water tank 10 to the position of the member part 12, and the discharge pipe 13 is periodically moved back and forth to clean the entire bottom surface with the discharged cleaning liquid. Even the embodiments fall within the technical scope of this invention.

Furthermore, the present invention is the same even if the sand and mud suction unit 12 is moved over the entire bottom surface 11 of the water tank 10 to suction and remove the sand and mud.

(Effects) The effects of the present invention configured as described above are as follows:
By forming the washing liquid flow along the bottom surface 11 of the water tank 10, the sediments that tend to stay on the water tank bottom surface 11 are automatically removed to the sand and mud suction section 12 while the cooling tower etc. continues to operate. The deposits can be removed by suction to the outside of the water tank 10 together with the water without any modification to the bottom of the existing water tank, and the operating efficiency of cooling towers and the like can be improved.

In an embodiment in which the sucked sediment is separated from the water and then the water is returned to the aquarium, the water can be used effectively and the amount of water to be supplied to the aquarium can be saved.

In the aquarium sediment removal device, which is the second invention, the method invention described above can be carried out, and several cleaning liquid discharge pipes 1
3 are arranged parallel to each other and horizontally along the bottom surface of the water tank 10, and the discharge holes 14 of each discharge pipe 13 are opened toward the central suction part 12, so that a laminar cleaning liquid flow over the entire width of the water tank 10 is created. can be formed on this bottom surface 11, and the deposits can be swept away to the section 12 by suction without causing them to stay on the entire bottom surface of the aquarium.

In the embodiment in which these discharge pipes 13 are fixedly arranged, there is no movable part, so there is no failure, and in the embodiment in which the discharge pipes 13 are disposed so as to be movable along the bottom surface 11, the total number of discharge pipes 13 can be reduced. The number of parts can be reduced.

Furthermore, the suction type solid-liquid separator 15 removes water from the water tank 10.
In a mode in which the sediment is sucked upward from the center of the bottom surface 11 of the tank, and after separating the sediment and water, it is always returned to the water tank 10, the amount of water to be replenished can be reduced, and the operation of the cooling tower etc. can be completely stopped. The deposits can be removed from the water tank 10 without any problems, and the operating efficiency of the cooling tower, heating tower, water tank, etc. can be improved.

If the direction of the discharge port 14 of the discharge pipe 13 is set at an angle such that the cleaning liquid flow reaches the substantially lower side of the adjacent discharge pipe 13, the cleaning effect of the bottom surface 11 can be maintained without disturbing the liquid flow. In an embodiment in which the bottom surface 11 is inclined outwardly by about 10 degrees, the sediment tends to flow down the bottom surface 11 under its own weight, so that the discharge port 1 of the discharge pipe 13
The deposits can be efficiently swept away to the sand and mud suction section 12 formed on the bottom surface 11 without increasing the flow rate of the washing liquid flow from the bottom surface 11.

In the third invention of the device, the sand and mud suction section 12 is constituted by the suction cover plate 20, which simplifies the structure and eliminates most of the work of collecting the sediment and suctioning from the water tank 10. This can be done without any trouble.

The protrusion 22 having the same height on the bottom surface of the suction cover plate 20
By forming this suction cover plate 20 into the aquarium 1
By simply installing the sand and mud suction unit 12 horizontally in the center of the bottom surface 11 of the bottom surface 1 of the
1.

In the embodiment in which the upper surface of the suction cover plate 20 installed on a part of the bottom surface 11 of the water tank 10 is covered by the sand-cutting cover plate 30 having a chevron-shaped cross section, sediments are not accumulated on the upper part of the suction cover plate 20. This suction cover plate 20
The sediments that have fallen on the top are distributed to the left and right sides of the suction cover plate 20 by this sand cutting cover plate 30, and the sediments are distributed to the left and right sides of the suction cover plate 20 through the suction port 21 on the bottom surface.
You can be sure to inhale toward the target.

[Brief explanation of the drawing]

rR++ > n)yt qOI/ Ari I J n)-1 key-q EQ+ +
, > -Δ) A schematic plan view showing a typical embodiment of the ← position, Figure 2 is a vertical side view thereof, and Figure 3 is an enlarged longitudinal sectional view showing a typical embodiment of the suction part structure. Figure 4 is a bottom view of the suction cover plate shown in Figure 3, and Figure 5 is a plan view of the sand cutting cover plate. Explanation of main symbols in the figure 10...Water tank, 12...Suction part, 13...Washing liquid discharge pipe.

Claims (1)

[Claims] 1) Directing the washing liquid flow along the bottom of the tank over almost the entire area of the bottom of the tank toward the sand and mud suction part formed in a part of the bottom of the tank below the liquid level. The sand and mud that is forcibly formed and precipitated on the bottom surface of the water tank is collected in the sand and mud suction section by this washing liquid flow, and the collected sand and mud is suctioned and removed to the outside of the water tank together with the liquid in the water tank. A method for removing sediment in an aquarium, characterized by: 2) The method of forming the washing liquid flow is a method of forming the washing liquid flow by a jet flow from several discharge holes opened toward the sand and mud suction section. Removal method. 3) The sand and mud suction removal method is a method of suctioning and removing the sand and mud that has settled in the tank while moving the sand and mud suction unit over almost the entire area of the bottom of the tank. How to remove sediment in an aquarium. 4) A sand and mud suction part is provided on a part of the bottom of the aquarium, and below the liquid level of this aquarium, at a position slightly separated from the bottom of the aquarium, a cleaning liquid discharge pipe having an arbitrary number of cleaning liquid discharge holes is installed on the bottom of this aquarium. The washing liquid discharge holes are arranged in a substantially uniform distribution over the entire bottom surface of the water tank, and the direction of the washing liquid discharge holes is downward from the horizontal direction, and 1. A device for removing sediment in an aquarium, characterized in that the sand and mud suction section is oriented substantially in the direction of the sand and mud suction section, and a primary side of a suction type solid-liquid separator is connected to the sand and mud suction section. 5) The aquarium sediment removal device according to claim 4, wherein the sand and mud suction section is provided in the center of the aquarium. 6) The aquarium sediment removal device according to claim 4, wherein the sand and mud suction section is provided along one side of the aquarium. 7) The secondary liquid discharge port of the suction type solid-liquid separator is in communication with the water tank in claim 4, 5, or 6.
The aquarium sediment removal device described in section 1. 8) The sand and mud suction section is installed in the water tank, and the suction pipe or hose connected thereto extends upward from the liquid level of the water tank and communicates with the primary side of the suction type separator. The aquarium sediment removal device according to item 4, 5, 6, or 7. 9) The aquarium sediment removal device according to claim 4, 5 or 6, wherein the suction port of the sand and mud suction section is provided to penetrate through the side plate or the bottom plate of the aquarium. 10) A sand and mud suction part is provided on the bottom surface of the water tank, parallel to one side of the lower water tank which is rectangular in plan and has a length corresponding to the entire length of this side, which is used for a type of cooling tower or heating tower for air conditioning. The bottom surface of the suction cover plate forming this sand and mud suction section is parallel to the bottom surface of the aquarium, and a suction port is provided in the center of the suction cover plate, and the suction pipe or hose connected to this suction port is connected to the aquarium liquid. It extends from inside to above the liquid surface and is further connected to the primary side of the suction type solid-liquid separator outside the water tank, and the bottom surface of the suction cover plate has a number of low contours facing toward the suction port. Several ridges are provided, and between these ridges and in the gap between the bottom surface of the water tank and the bottom surface of the suction cover plate, several suction guide paths are formed, and the suction ports of these suction guide paths are A device for removing deposits in an aquarium, characterized in that the device is distributed over the entire length of one side of the aquarium. 11) The aquarium sediment removal device according to claim 10, wherein the suction cover plate is a suction cover plate whose upper surface is covered with a sand-cut cover plate having a chevron-shaped cross section.