JP5453363B2 - Solid-liquid separator - Google Patents

Description

  The present invention relates to a solid-liquid separation device for removing suspended solids in water.

  A cooling tower (cooling tower) is installed as a device for cooling water used as a cooling medium in the air conditioning mechanism by using the heat of vaporization of water. The cooling tower sucks a large amount of air from the outside by a fan, contacts the water circulating from the air conditioning mechanism, and cools it by heat of vaporization.

Thus, since the cooling tower is for bringing outside air into contact with water, various types of solid impurities are taken into the water. As a result, the following adverse effects occur.
a. Scale and slime are generated on the surface of the heat exchanger, impairing heat conduction.
b. It deposits on the metal surface and corrosion under the deposit occurs.
c. Clogging of pipes and stagnation of water flow occur, increasing the energy loss of the pump.
d. Colloidal material is deposited in the cooling system where the water flow is slow, creating a hotbed of microorganisms.
e. Fine particles come into contact with the pipe wall due to water flow and damage the inside of the pipe.

  Since the presence of solid impurities in water causes various adverse effects, an apparatus for removing the solid impurities is indispensable. And what was conventionally used as such a device is a solid-liquid separation device in which a mesh-shaped filter medium is filled in a sealed cylindrical separation device main body provided with a water inlet and an outlet at the top. is there. The solid-liquid separator passes water flowing into the main body of the separator from the water inlet through the mesh-like filter medium. At this time, solid impurities in the water are removed by the filter medium, and the filtered water is discharged from the water outlet. To the outside of the separator main body.

  However, in such a conventional apparatus, the mesh-shaped filter medium is easily clogged, and frequent cleaning is required. Further, since the mesh-shaped filter medium is made of a corroding metal, it cannot be used for a long period of time, and it requires a lot of labor and cost to replace it. Furthermore, since the solid impurities are simply captured by the mesh, if clogging starts on the inflow side of the water, it becomes difficult for water to pass through the filter medium, and the efficiency of filtration is significantly reduced and the flow of circulating water is reduced. It becomes a big resistance. In addition, the pore size must be selected in consideration of the amount of water passing therethrough, and therefore it was not possible to remove a very small particle size. Furthermore, in order to prevent clogging of the filter medium, backwashing has to be performed, and a large amount of water is required for this purpose.

  The present invention has been made in view of the above points, and the filter medium is not clogged, and thus does not require frequent cleaning as in the prior art, and also does not require backwashing. By using stainless steel, a metal that is difficult to corrode, it can withstand long-term use, and by using a specially shaped filter medium that separates by impact and centrifugal force, it can filter much more efficiently than before. It is an object of the present invention to provide a solid-liquid separation device that can remove solids having a fine particle size of up to about 7 microns.

  Thus, the gist of the present invention is that the water inlet and outlet are provided in the upper part, and the inside is divided up and down by a baffle plate having a large number of small holes, and the upper part is used as a filtration chamber. After filling the required number of filter media in irregular directions, the cylindrical separator body with a solids sedimentation chamber at the bottom and a solid material discharge port at the bottom, and an annular filter medium body, in the circumferential direction A solid-liquid separation comprising a plurality of staggered rectangular water inlets along with a filter medium provided with a semicircularly bent water flow restricting plate extending inwardly from the short side of each water inlet. In the device.

  In the above configuration, the separator main body and the filter medium are preferably made of stainless steel.

  Since the present invention is configured as described above and uses a filter material of a special form that performs a separation action by impact and centrifugal force in place of the conventional mesh-shaped filter medium, clogging occurs as in the conventional mesh-shaped filter medium. There is nothing. Therefore, it is possible to eliminate the need for frequent cleaning as in the prior art and the need for reverse cleaning. Further, when both the separator main body and the filter medium are made of stainless steel, they can be used for a long time without being corroded. In addition, as described above, a filter medium with a special form that performs the separation action by impact and centrifugal force is used as the filter medium, so that it can be filtered much more efficiently than before and has a fine particle size of about 7 microns. The solid matter can also be removed.

It is a front view of the solid-liquid separator which concerns on embodiment of this invention. It is the same longitudinal cross-sectional front view. It is a perspective view of a filter medium. It is a front view of a filter medium. It is the sectional view on the AA line in FIG. It is operation | movement explanatory drawing of a filter medium.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  In the figure, 1 is a solid-liquid separator. Reference numeral 2 denotes a sealed cylindrical main body of the solid-liquid separator 1. Further, the separation device main body 2 is made of stainless steel in the present embodiment.

  Further, the separation device body 2 is provided with a water inlet 3 and a water outlet 4 at the upper part, and the interior is divided up and down by a baffle plate 5 having a large number of small holes 5a, and the upper part serves as a filtration chamber 6. The filter medium is filled with the required number of filter media in irregular directions, and a solid discharge port 8 is provided at the bottom of the solid settling chamber 7 at the bottom. The ratio between the filtration chamber 6 and the solid sediment settling chamber 7 is 55:45 in the present embodiment, but can be appropriately set according to the flow rate of water, water pressure, water quality, and the like. Further, in the present embodiment, water pipes 9 and 10 with connecting flanges 9a and 10a are connected to the water inlet 3 and the water outlet 4 respectively, and the water pipes 9 and 10 are connected to each other. Plates 11 and 12 each having holes 11a and 12a having required diameters for preventing the filter material from popping out are attached to the connecting portions. In the present embodiment, the baffle plate 5 and the plates 11 and 12 are punching plates. In addition, a plurality of suspension plates 13 and 13 having suspension holes 13a are provided on the top of the separation device main body 2, and support legs 14 and 14 that are supported on the floor surface are provided on the lower end.

  Reference numeral 15 denotes a filter medium filled in the filtration chamber 6 of the separator main body 2. The filter medium 15 is made of stainless steel in this embodiment.

  The filter medium 15 is provided with a large number of zigzag rectangular water inlets 17, 17, 17... In the annular filter medium main body 16, and each of the water inlets 17, 17, 17 is provided in the circumferential direction. Are provided with water flow restricting plates 18, 18, 18,... Bent in a semicircular shape extending inwardly (in the radial direction toward the center) from one short side of each of. In the present embodiment, the water flow restricting plate 18 is formed by being cut and raised inward from the water inlet 17 portion. In addition, the filter medium 15 is filled in the filtration chamber 6 of the separation device body 2 in a non-uniform direction without being fixed.

Next, the operation of this embodiment will be described.
As shown in FIG. 2, the water mixed with the solid impurities flowing into the separation device main body 2 from the water inlet 3 through the water pipe 9 is filtered by the filter media 15, 15, 15... Filled in the filtration chamber 6. The solid matter passes through the small holes 5a of the baffle plate 5 and settles in the solid matter sedimentation chamber 7, and the filtered water flows out from the water outlet 4. The solid matter settled in the solid matter sedimentation chamber 7 is settled at the bottom thereof and is discharged from the solid matter discharge port 8 at a predetermined time.

  Further, the separation action by the filter medium 15 is as shown in FIG. 6. When water flows into the filter medium body 16 from each of a large number of water inlets 17, 17, 17. Water flows between the water flow restriction plates 18 and 18 in the same row in the water flow restriction plates 18, 18, 18... Bent in a semicircular shape at each of the water inlets 17, 17, 17. By these, it becomes a rotational flow. At this time, the solid matter having a large difference in specific gravity due to the centrifugal force hits the front surface of the water flow restricting plate 18, 18, 18 on which the water hits, and the solid matter still remaining in the water flow is the other water flow restricting plate. 18 and 18, the solids in the water are separated. The separated solid matter is swept away by the water flowing from the side of the filter medium body 16 and settled. In addition, W shows a water flow and C shows a solid substance.

  In this way, filtration is performed at a plurality of locations in a single filter medium 15, and a large number of filter media 15 are filled in the filter chamber 6 of the separation device body 2, and in addition, the filter medium 15 has an uneven orientation. Since the water flow in the filtration chamber 6 of the separation device body 2 becomes a turbulent flow and comes into contact with the filter medium 15 one after another, the filtration efficiency is greatly improved as compared with the conventional solid-liquid separation device. It can be made to. Further, since solid-liquid separation is performed by the above-described action, it is possible to remove solids having a fine particle size of about 7 microns that cannot be filtered by a conventional apparatus. Further, since clogging as in the conventional apparatus does not occur, frequent cleaning is unnecessary, and reverse cleaning that requires a large amount of water is also unnecessary. Further, when both the separator main body and the filter medium are made of stainless steel, they can be used for a long time without being corroded.

DESCRIPTION OF SYMBOLS 1 Solid-liquid separator 2 Separator main body 3 Water inflow port 4 Water outflow port 5 Baffle plate 5a Small hole 6 Filtration chamber 7 Solid matter sedimentation chamber 8 Solid matter discharge port 9, 10 Water flow tube 11, 12 Prevention of filter medium jumping out Plate 15 Filter medium 16 Filter medium body 17, 17, 17 Water inlet 18, 18, 18 Water flow restricting plate

Claims (2)

  In addition to the water inlet and outlet in the upper part, the baffle plate with a number of small holes is used to partition the interior vertically, and the upper part is used as a filtration chamber. A solid cylindrical sedimentation device body with a solids sedimentation chamber at the bottom and a solid material discharge port at the bottom, and an annular filter medium body with a number of staggered rectangular water inlets along its circumferential direction A solid-liquid separation device comprising a filter medium provided with a water flow regulating plate bent in a semicircular shape extending inward from a short side of one side of each water inlet. The solid-liquid separator according to claim 1, wherein the separator main body and the filter medium are a separator main body and filter medium made of stainless steel.

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