JP3234409U - Filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter capable of removing a clogged contaminant in a short time when the discharge of a waste fluid containing a contaminant is inhibited. SOLUTION: A cylindrical main body container, an inflow pipe for introducing a contaminating mixed fluid into the main body container, an outflow pipe for discharging a processing fluid from which contaminants have been separated, a conical base cylinder-shaped filter element, and separated impurities. Equipped with a discharge pipe that discharges waste fluid containing substances, the filter element is coaxial with the main body container, the lower end is arranged on the bottom surface of the main body container with the same inner diameter as the outflow pipe, and is connected to the main body. At the bottom of the container, an outlet for contaminants and a tubular body with the same inner diameter as the outlet are erected on the outer surface of the main body container, and the outer side of the tubular body is an opening that can be sealed with a seal gasket and a lid. A seal gasket holding groove is formed on at least one of the lid and the opening. [Selection diagram] Fig. 1

Description

The present invention relates to a filter (also called a strainer) that separates impurities from a mixed fluid containing impurities (separation objects, foreign substances) from the fluid.

Fresh water such as raw water taken into a water purification plant, water sent from a dam of a hydroelectric power plant to a power generation device, domestic water using running water, agricultural water or cooling water for industrial machinery, and seawater include earth and sand, wood fragments, dead leaves, small fish and crabs. , Jellyfish, shellfish and other contaminants are included. These impurities need to be removed to prevent clogging of pipes and damage to machinery and equipment, and filters are used for this purpose.

Special Publication No. 61-53094 Japanese Unexamined Patent Publication No. 2-119904

The invention described in Patent Document 1 is a foreign matter removing device that catches and removes foreign matter such as marine organisms existing in the cooling seawater of a condenser that uses seawater as cooling water in a thermal power plant or a nuclear power plant, and discharges the foreign matter together with the foreign matter. For the purpose of reducing the amount of water to be discharged and freely setting the position of the cooling water outlet, an outflow pipe is arranged above the filter so that the treated water after filtration is discharged upward, and the casing and filter are provided. It is characterized in that the average diameter of the annular swirl space formed between them is formed so as to gradually decrease toward the foreign matter discharge port.

In the invention described in Patent Document 2, a mesh screen is used as a cylindrical filter, and a scraping member that rotates in contact with the screen to the outside in order to remove clogging is scraped to rotate in contact with the inner surface of the screen. Members or backwash nozzles are arranged respectively.

The inventions described in Patent Document 1 and Patent Document 2 do not disclose measures to be taken when a foreign matter is clogged in a discharge port that discharges the removed foreign matter together with water.

When the amount of contaminants to be treated and the contaminants contained in the mixed fluid such as water or seawater is large, or the shape of the contaminants is an elongated shape such as a tree branch or bamboo piece, and the length is the diameter of the outlet. If it is longer, the contaminants will settle near the outlet to the discharge pipe and become stuck, or the length direction will go straight to the outlet and get caught and block it, and the contaminants will accumulate one after another and cause clogging. It may wake up and hinder the discharge of waste fluid containing impurities. If this happens, filtration will be hindered, so it was necessary to open the top lid to remove clogging with conventional filters.

However, the upper lid has the same diameter as the outer diameter of the main body container, is large and heavy, and is fixed to the main body container with a large number of bolts, so it is necessary to remove the bolts and lift the top lid. ， It takes time and effort to remove the bolts, and during this time, the equipment to be cooled that uses the fluid must be stopped, which hinders the operation.

An object of the present invention is to provide a filter capable of easily removing accumulated impurities in a short time and releasing the obstruction when the separated contaminants obstruct the discharge pipe.

In the present invention, when the mixed fluid to be treated contains a large amount of contaminants and the contaminants accumulate near the discharge port to the discharge pipe and cause clogging, or when the size of the contaminants is large or a tree branch Some of them have an elongated shape such as bamboo or bamboo pieces, and the length is longer than the diameter of the discharge port. These block the discharge port connected to the discharge pipe, and the discharge of other impurities is hindered and accumulated. It is an object of the present invention to provide a filter capable of removing clogging contaminants in a short time when the discharge of waste fluid including substances is hindered.

The filter of the present invention separates and removes the contaminants from the mixed fluid containing the contaminants to obtain a processing fluid.
A cylindrical main body container with a top lid and a bottom plate, an inflow pipe that introduces the mixed fluid into the main body container, an outflow pipe that discharges the processing fluid separated from the contaminants, and a conical base cylinder with a larger diameter toward the top. Equipped with a filter element and a discharge pipe for discharging waste fluid containing the separated contaminants.
The inflow pipe is arranged tangentially on the circumferential wall surface of the main body container.
The outflow pipe is erected on the outer surface of the bottom plate of the main body container.
The discharge pipe is arranged tangentially on the wall surface at the lower end of the main body container.
The filter element is coaxial with the main body container, and the lower end is arranged on the bottom surface of the main body container with the same inner diameter as the outflow pipe and is connected to the outflow pipe.
An outlet for impurities and a tubular body having the same inner diameter as the outlet are erected on the outer surface of the main body container at the lower part of the main body container, and the outer side of the tubular body is sealed with a seal gasket and a lid. It is a possible opening, and is characterized in that a seal gasket holding groove is formed in at least one of the lid and the opening.

In the filter of the above invention, it is preferable that the filter has a ferrule consisting of a lid that can be opened and closed, a flange having a tapered opening, and a clamp.

Further, in the filter of the above invention, the lid body has a convex portion that fits into the opening portion, and the seal gasket holding groove is formed at a boundary portion between the convex portion and the flange of the lid body. Is preferable.

According to the present invention, the mixed fluid to be treated contains a large amount of impurities, or if the size is large, or if the mixed fluid has an elongated shape such as a tree branch or a bamboo piece and the length is longer than the diameter of the outlet. When (foreign matter) is contained, contaminants accumulate near the outlet for discharging the processing fluid from the main body container to the discharge pipe, causing clogging and hindering the discharge of waste fluid from the discharge port. In this case, it is possible to easily remove the accumulated contaminants in a short time, and the downtime of the device using the processing fluid can be significantly shortened. Actually, it took about 3 hours to open the top lid and remove the contaminants on the bottom of the filter, but when the inspection outlet of the present invention was provided, it could be removed in about 20 minutes. ..

A translucent three-dimensional view showing the configuration of an embodiment of the filter of the present invention. A translucent three-dimensional view showing the configuration of an embodiment of the filter of the present invention using a ferrule for the opening. A translucent three-dimensional view showing the flow of fluid in the filter of FIG. A translucent cross-sectional view showing the configuration of an embodiment of a combination of a lid and an opening of the filter of the present invention using a ferrule. A translucent cross-sectional view showing the configuration of another embodiment of the combination of the lid and the opening of the filter of the present invention using ferrules. Perspective view showing a preferred embodiment of the ferrule clamp

A preferred embodiment of the filter according to the present invention will be described with reference to the drawings.
FIG. 1 is a translucent three-dimensional view showing the configuration of an embodiment of the filter of the present invention.
The main container is formed in a cylindrical shape and is installed vertically so that its axis is vertical. An upper lid is formed on the upper end side of the main container, and the upper lid is fixed to the container main body. The method of fixing the upper end of the main body container and the container lid is not particularly limited, but it is preferable to form the upper end of the main body container in a flange shape and fix it with bolts and nuts.

A bottom plate is arranged on the lower end side of the main body container. The method of fixing the bottom plate to the lower end of the main body container is not particularly limited, and welding may be used, or a flange may be formed at the lower end of the main body container and fixed to the bottom plate with bolts and nuts. The main body container is preferably made of a steel material such as SS400 or SUS304.
It is preferable that the inner wall surface of the main body container is provided with a rubber lining to prevent corrosion and wear, but the present invention is not limited, and the inner wall surface may not have a rubber lining.

The inflow pipe (inlet pipe) for introducing the untreated mixed fluid from which contaminants should be removed into the filter is arranged near the center of the main container in a tangential direction with respect to the circumferential wall surface of the main container. , A mixed fluid such as water containing impurities such as earth and sand, wood fragments, aquatic organisms and tree branches is arranged so as to form a rotating flow (vortex flow) along the cylindrical wall surface of the main container. The mounting position of the inflow pipe is set near the center of the height of the main container, but it does not have to be exactly in the center.

An outflow pipe (outlet pipe) having the same inner diameter as the through hole is attached to the outer surface of the center of the bottom plate, and the processing fluid from which contaminants have been filtered and removed flows out from this outflow pipe. The outflow pipe is either connected to the lower end opening of the filter element or integrated with the lower end opening so that the processing fluid can flow smoothly. The inflow pipe, outflow pipe, discharge pipe, and filter element can also be manufactured from the same metal material as the main container.
The outflow pipe should have an inner diameter similar to that of the inflow pipe, as long as the processing fluid from which contaminants have been removed flows smoothly to the equipment used.

At the lower end of the main container, a discharge pipe is provided to discharge a fluid containing a large amount of contaminants that has been filtered and separated from the mixed fluid and settled or is on running water as waste fluid. The discharge pipe is attached at right angles to the axis of the main container and tangentially to the circumferential wall surface. Like the inflow pipe, the discharge pipe is installed in the forward direction of the rotating flow, and with this configuration, the rotating flow can be used to smoothly discharge impurities such as earth and sand.

The inner diameter of the discharge pipe is 70% or less, preferably 5% or more, of the inner diameter of the inflow pipe. The inner diameter of the discharge pipe is preferably 60% or less, more preferably 50% or less of the inner diameter of the inflow pipe. Further, the inner diameter of the discharge pipe is more preferably 10% or more, and further preferably 20% or more of the inner diameter of the inflow pipe.

If the inner diameter of the discharge pipe exceeds 70% of the inner diameter of the inflow pipe, the amount of waste fluid discharged from the discharge pipe together with the contaminants increases, and the amount of processing fluid decreases, resulting in poor efficiency. If the inner diameter of the discharge pipe is less than 5% of the inner diameter of the inflow pipe, the amount of waste fluid will be small, and the sedimented contaminants will not be discharged sufficiently and will accumulate at the bottom of the main container. The opening is clogged.

The inner diameter of the inflow pipe is appropriately set according to the amount of the mixed fluid to be filtered, but is preferably 15 cm or less.

The filter element has a truncated cone shape with a large number of filtration holes formed, and is arranged so as to have an inverted cone shape with the large diameter part facing up, almost coaxial with the main container, and the lower end with a small diameter. The opening is fixedly arranged so as to match the through hole formed in the bottom plate. The processing fluid from which impurities have been removed through the filtration holes flows into the inside of the filter element and flows into the outflow pipe from the lower end opening. The distance between the upper end of the filter element and the lower surface of the upper lid is preferably narrow, and may be in contact with each other. With such a configuration, it is possible to prevent contaminants from being mixed into the inside from the upper end of the filter element without being filtered.

The filter element is made of a steel material such as SS400 or SUS304 like the main body container, and a large number of filtration holes are formed on the side surface so that impurities can be filtered from the mixed fluid into a processing fluid. The size of the filtration hole is appropriately set according to the type and size of the contaminants contained in the mixed fluid, but if it is too large, the removal of impurities is insufficient, and if it is too small, the effect of removing impurities is improved. ， The filtration rate of the fluid becomes slow. The size of the filtration hole is preferably 2 mm or more, and more preferably 3 mm or more. The filtration holes are preferably 30 mm or less, more preferably 20 mm or less, and even more preferably 15 mm or less.

If the number of filtration holes is too large, the strength of the filter element decreases, and if it is too small, the filtration rate decreases. Therefore, the strength and the filtration rate are taken into consideration and set appropriately.
The filter holes of the filter element are preferably formed by punching, and the shape of the holes is not particularly limited, and a circular shape is also suitable for processing. If the thickness of the filter element is too thin, the strength is low and it is easily deformed. If it is too thick, it becomes difficult to drill holes and the weight of the filter element becomes too large. Commercially available punching metal may be used for manufacturing the filter element.

The contaminants that have moved downward are discharged together with the waste fluid from the discharge pipe on the swirling flow swirling force of the waste fluid. It is also preferable that an on-off valve or a valve is provided in the discharge pipe, and the filtration operation is performed with the discharge pipe closed so that when impurities are accumulated, the discharge pipe is opened and discharged. According to this aspect, the amount of fluid discharged from the discharge pipe can be reduced, and the ratio of the processing fluid can be increased.

The inner diameter of the lower end opening of the inverted cone-shaped filter element is not particularly limited as long as the processing fluid flows smoothly, and may be about the inner diameter of the inflow pipe.
The method of fixing the filter element and the bottom plate is not particularly limited, and examples thereof include welding, forming a flange, fixing with bolts and nuts, and fitting.

A through hole having the same diameter as the opening at the lower end of the filter element is formed in the center of the bottom plate, and the cyclone element is fixedly arranged so that the opening at the lower end matches the through hole of the bottom plate. The filter element can be made of the same metal material as the main container.

At the bottom of the main container, an outlet for impurities accumulated at the bottom together with the discharge port and a cylindrical body having the same inner diameter as the outlet are erected on the outer surface of the main container. The outer side of the tubular body is an opening that can be sealed with a seal gasket and a lid. In this example, a flange is formed in the opening, and the disk-shaped lid is fixed and sealed with bolts. It has become like. A seal gasket holding groove for holding an O-ring-shaped seal gasket is formed on the outer surface of the flange of the opening and the lid body.

The inner diameter of the opening is not limited as long as the impurities can be taken out by putting a hand in it, but if it is too large, problems such as an increase in the weight of the lid will occur. The inner diameter of the opening is preferably 10 cm or more, preferably 20 cm or less, and more preferably 15 cm or less.

If the length of the normal body erected at the outlet is too short, it will be difficult to fix the lid, and if it is too long, it will be difficult to take out the accumulated impurities. Therefore, it should be 5 cm or more and 15 cm or less. It is preferably 10 cm or less, and more preferably 10 cm or less.

FIG. 2 is a diagram showing a mode in which a ferrule is used for the opening, and FIGS. 4 and 5 show a cross section of the outlet opening.

The ferrule is a structure in which a tapered flange and a tapered lid are tightened and fixed with a ferrule clamp (also simply referred to as a "clamp"). It has a tapered flange that is formed at the outer end of a tubular body arranged at the outlet of accumulated impurities in the main container and whose thickness is thinner toward the outer circumference on the end side, and has the same outer diameter as this flange. The lid with a taper whose thickness becomes thinner toward the outer circumference on the end side is tightened and fixed with a ferrule clamp having a groove that receives the tapered part that is overlapped so that the taper forming part is on the outside, and the opening is closed. do. The ferrule clamp is illustrated in FIG.

FIG. 3 is a translucent three-dimensional view showing a state in which impurities are effectively separated from the mixed fluid by the filter of the present invention.
The mixed fluid sent from the inflow pipe to the filter forms a rotating flow inside because the inflow pipe is tangentially arranged on the outer surface of the main body container. Due to the formation of the rotating flow, the contaminants come into contact with the inner surface of the main body container due to the centrifugal force due to the rotation of the flow, or the flow velocity of the fluid decreases near the inner surface of the main body container. It settles or is caught in running water due to its gravity close to that of water and moves toward the discharge pipe.

In addition, since the contaminants move while rotating around the filter element, they spread evenly on the outer surface of the filter element and are filtered, which has the effect of preventing partial clogging. In addition, the contaminants that are filtered by the rotating flow and adhere to the surface of the filter element are peeled off and settled, preventing clogging of the filter element.

FIG. 4 is a cross-sectional view showing a mode in which the seal gasket holding groove is formed on the outer end surface of the flange and the end surface of the lid body.

In FIG. 5, an annular convex portion concentric with the lid body that fits into the tubular body of the outlet is formed on the lid body, and a seal gasket holding groove is formed at the boundary between the convex portion and the flange of the lid body. It is sectional drawing which showed the aspect shown. According to such a configuration, the seal gasket can be mounted and held, and the lid can be fitted to the normal body without falling off and fastened with a ferrule clamp, so that the work can be performed by one person. Further, since the seal gasket is attached to the lid body, there is no risk of damaging the seal gasket when the lid body is removed to remove impurities accumulated on the bottom of the main body container.

FIG. 6 is a diagram illustrating the configuration of the ferrule clamp. The ferrule clamp is a hinge member that connects two semi-circular outer fitting materials and one end of each outer fitting material so that the outer fitting material can rotate in a circularly closed state and a ring-opened state. A fastening member is provided at the released end of the outer fitting material. The outer fitting material has a groove formed on the inner peripheral surface, and the shape of the groove is a concave taper, which is a combination of a taper formed on the opening flange of the cylindrical body and a taper formed on the outer periphery of the end portion of the lid. Formed receptively in the state.

The fastening member of the first outer fitting material is a bolt holding portion to which a bolt and a wing nut are mounted, and the fastening member of the second outer fitting material is a locking portion in which a U-shaped bolt receiving portion for receiving a bolt is formed. Is. In the bolt holding portion of the first outer fitting material, one end of the bolt is attached so that it can be rotated on the circumferential surface of the outer fitting material with a pin, and a wing nut is attached to the other end side of the bolt.

The first outer fitting material and the second outer fitting material connected by the hinge member are rotated to match the taper formed on the opening flange of the tubular body with the taper formed on the outer periphery of the end portion of the lid body. After fitting it into the groove in the state, the bolt is rotated to accommodate the bolt in the bolt receiving portion, and the wing nut is tightened to fasten and close the opening of the normal body with the lid. Further, when the wing nut is loosened, the tightening by the fastening member of the first outer fitting material and the second outer fitting material can be released, and the lid body can be easily removed in a short time.

It can be used for domestic water, environmental water treatment, agriculture, forestry and fisheries, energy, metals, ships, water treatment equipment of the petroleum industry, and removal of metal scraps from cooling water in rolling of steel production.

Claims (3)

A filter that separates and removes impurities from a mixed fluid containing impurities to form a processing fluid.
A cylindrical main body container with an upper lid and a bottom plate, an inflow pipe that introduces the mixed fluid into the main body container, an outflow pipe that discharges the processing fluid from which the contaminants have been separated, and a conical base cylinder with a larger diameter toward the top. Equipped with a filter element and a discharge pipe for discharging waste fluid containing the separated contaminants.
The inflow pipe is arranged tangentially on the circumferential wall surface of the main body container.
The outflow pipe is erected on the outer surface of the bottom plate of the main body container.
The discharge pipe is arranged tangentially on the wall surface at the lower end of the main body container.
The filter element is coaxial with the main body container, and the lower end is arranged on the bottom surface of the main body container with the same inner diameter as the outflow pipe and is connected to the outflow pipe.
An outlet for impurities and a tubular body having the same diameter as the outlet are erected on the outer surface of the main body container at the lower part of the main body container, and the outer side of the tubular body is sealed with a seal gasket and a lid. A filter which is a possible opening and is characterized in that a seal gasket holding groove is formed in at least one of the lid and the opening.
The filter according to claim 1, wherein the openable and closable lid and the opening are ferrules including a flange having a taper and a clamp. The second aspect of the present invention, wherein the lid has a convex portion that fits into the opening, and the seal gasket holding groove is formed at a boundary between the convex portion and the flange of the lid. Filter.

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