JP2011110511A - Filtration device for liquid, and filtration/concentration tank for liquid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filtration device for a liquid which does not cause clogging even if being used for a long time and, keeps a constant filtration flow rate, and easily solves clogging and is normally regenerated if being clogged, and to provide a filtration/concentration tank for a liquid. <P>SOLUTION: The filtration device for a liquid is characterized in that a hollow filter to be immersed in a liquid to be filtered is formed by sealing both upper and lower ends of a cylindrical filter material with metal block-like thick caps: a liquid port pipe to be connected with a discharge hose is set in the inside of the filter so as to apply suction force of a pump to the inside of the filter: a vibrator for applying vibration to the filter material is installed by using both or one of the caps in both ends of the filter as a medium: and the pump is made forward/reverse switchable for causing backward flow of the liquid. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a liquid filtration apparatus mainly used for purification of fluids such as drinking water, industrial water, chemical liquid products, and waste oil, and a liquid filtration / concentration tank that can also be used for concentration.

  Conventionally, this type of liquid filtration apparatus has a cap fitted to both ends of a filter having countless fine pores arranged around the entire circumference of the cylinder, and a liquid pipe is passed through the top cap. It was opened inside, and a suction hose by a pump was connected to the liquid pipe. For use, the tank is always installed in a water tank containing sewage to be purified, or when the pump is started in a state immersed in sewage, the suction force reaches the inside of the cylinder so that the tank can be removed from the periphery of the cylinder. Water is suctioned while being filtered, and the purified water is discharged through a pump.

  By the way, the size of the pores in the filter is about 1 mm in the punching type in which punch holes are made in a sintered metal body such as a stainless steel plate, and about 100 μm in the slit type in which thin wires are assembled vertically and horizontally. It is about 2 μm in the wire mesh type that is sintered while being pressed repeatedly. However, it is said that the present technology has reached a stage where it can be miniaturized to about 0.5 μm by a wire mesh type.

  According to the conventional liquid filtration device, depending on the size of the pores and the size of the filtration particles, it is used for filtration of various liquids such as water, oil and emulsion as described above, and is suitable for the filtration particles. Filters are selected based on the size of the pores, but in all cases, diversion gradually decreases and clogs up in a short time, so it is currently being regenerated and filtered while replacing filters and backwashing. is there. For this reason, there are problems that continuous operation is impossible, regeneration work is troublesome and time consuming, and consequently affects purification costs.

  In view of the above circumstances, the present invention provides a liquid filtration device that is not clogged even when used for a long time, maintains a constant filtration flow rate, and can be easily eliminated and regenerated normally even if clogged. An object was to provide a liquid filtration / concentration tank.

  In order to solve the above problems, the present invention forms a hollow filter so that the upper and lower ends of a cylindrical filter material are sealed in caps in a metal block shape and immersed in the liquid to be filtered, and the suction of the pump is placed in the filter. A liquid pipe is connected to the discharge hose so that the force can be applied, and a vibrator that can vibrate the filter material using the caps at either end of the filter or one of the caps as a medium is provided, and the pump can reverse the liquid. Provided is a liquid filtering device characterized in that it can be switched between forward and reverse.

  Further, according to the present invention, a vertically long liquid filtering device is provided at the center of a tank provided with a liquid inlet at the lower end and an outlet at the upper end. The liquid filtering device is a cylindrical filter material. Seal the upper and lower ends of a metal block thickly with a cap to form a hollow filter soaked in the liquid to be filtered, and incorporate a liquid outlet pipe connected to the discharge hose so that the suction force of the pump reaches inside the filter, Further, a filter for liquid is provided, which is provided with a vibrator that can vibrate the filter material using the caps at both ends of the filter or one of the caps as a medium, and the pump is capable of switching between normal and reverse so that the liquid can flow backward. A concentration tank is provided.

  According to the above configuration, when the apparatus is operated in a state where it is immersed in a liquid such as dirty water, the vibration of the vibrator is powerfully and reliably applied to the filter material through the thick cap in the form of a block having a large mass. Therefore, particles as impurities suspended in the liquid are sucked into the eye holes and hit the edge of the holes, and the particles are repelled by strong vibrations, so that clogging is reliably prevented.

Although the time that does not cause clogging varies depending on various conditions such as the relative size between the pores and the particles and the degree of contamination, even if clogging occurs at any point in time, Any of these measures can be taken to effectively eliminate clogging in a short time close to continuous operation.
(1) Pause the pump and shake off the particles only with the vibration of the vibrator.
(2) Reversing the pump and applying a vibration to the vibrator while exerting a pushing force on the filter. In this case, the particles adhering to the filter material can be sprinkled off to the liquid outside the filter by synergy between the positive pressure in the filter and the vibration of the vibrator.

  As described above, according to the liquid filtration device and the liquid filtration / concentration tank of the present invention, a constant filtration flow rate is maintained without clogging even when used for a long time. It is possible to reduce the cost of purification by eliminating many unnecessary operations while regenerating in a short time, which is almost the same as continuous operation, while reducing the need for regenerating while performing cleaning. In particular, for regeneration work, clogging is eliminated by temporarily suspending filtration suction and driving only the vibrator for a few seconds, for example, for several tens of seconds, and by applying the vibrator even in the case of backwashing, There is an excellent effect that the cleaning time can be greatly shortened.

  In addition, according to the third aspect, the above-mentioned effect becomes remarkable because the vibration axis is at the center, and according to the fourth aspect, the filter is suitable for the handy type and can be easily replaced.

It is sectional drawing which shows the filtration apparatus for liquids concerning this invention in a use condition. It is sectional drawing which isolate | separates and shows the filtration apparatus for liquids to a base | substrate and a filter. It is sectional drawing which expands and shows the principal part of the filtration apparatus for liquids. It is an expanded sectional view of the AA line arrow of FIG. It is explanatory drawing which assumed the reason which is not clogged in the filtration apparatus for liquids. It is sectional drawing which shows the filtration / concentration tank for liquids concerning this invention in use condition.

  The liquid filtering device according to the present invention comprises a cylindrical filter 2 and a vibrator 3 and the like. When activated to suck a liquid containing impurities into the cylinder while vibrating the outer filter material 2a, the impurity particles are filtered. Even if only particles that are much smaller than the eye holes 7 are blown away in the material 2a and pass through the eye holes 7 of the filter, the same or larger particles will be repelled by the vibrating edge of the hole, so regardless of the size of the eye holes 7 The result is not clogged.

  There are various forms and types of the filter material 2a, in particular, a method of forming the eye holes 7 in the filter wall as described above. For example, the eye holes 7 are opened by a punching type, a slit type, a wire mesh type, or other means. The selected material is appropriately selected according to the actual application. Among them, at present, the finest eye holes 7 of about 0.5 μm, which are generally wire mesh type, can be obtained.

  The vibrator 3 can be considered in various ways. However, the type and attachment method of the vibrator 3 are not particularly limited as long as the filter material 2a itself is vibrated. For example, the vibrator 3 may be attached to the end of the filter 2 or the center. You may provide in a part. The drawing exemplifies the case where it is provided at the center.

  In addition, the liquid filtering device can be a stationary type that is always installed in the liquid tank (claim 2), but the following Example 1 shows a handy type that is used while being carried. Even the installation type shown in the second embodiment has basically the same structure.

  The pump 39 is not particularly limited as long as the pump 39 can selectively switch both forward and reverse with respect to the filter 2 side. We liked both powers effectively.

  1 to 5 show an embodiment, and the liquid filtering device R can be freely carried and operated so as to be suitable for draining cast concrete in addition to a normal liquid filtering device. It is a handy type, and is configured as a combination of a base body 1 provided with a vibrator 3 and a liquid suction / discharge device 4 and a cylindrical filter 2 that is replaceably attached thereto. The stainless caps 8 and 9 are assembled in a block shape. Among them, the upper end cap 8 is connected to the liquid pipe 10 of the suction / discharge device 4 and the discharge hose 12. In addition, although illustration is abbreviate | omitted, a handle | steering_wheel is attached to an upper end and a switch is provided in it.

  The filter 2 is a wire mesh type filter material 2a suitable for finer eyes in this case. The filter material 2a has a cylindrical shape by rounding the filter material 2a having 2 μm eye holes 7, and the caps 8 and 9 are provided at both ends. The ring-shaped rims 8a and 9a to be formed are fitted, and the internal thread 11 is formed on the inner peripheral surface of the upper end rim 8a, but the inner peripheral surface of the lower end rim 9a is a non-threaded straight Formed.

  The vibration device is a known device, and the vibration shaft 13 is formed in a cylindrical shape, and a rotation shaft 17 by a motor 15 is pivotally supported at the center, and an eccentric rotor 18 is fixedly attached to the rotation shaft 17.

  The base body 1 is centered on a vibration shaft 13 provided with a motor 15 at the upper end, and is attached with a deposit block 8b that is screwed to the edge metal 8a in order to form the cap 8 near the upper end. In the vicinity, a fitting gold block 9b fitted to the edge metal 9a is attached. The lower end portion 14 of the vibration shaft 13 protrudes under the fitting metal block 9b, and when used for draining cast concrete, at the same time, the lower end portion 14 is agitated to enhance the concrete in the formwork. It can be planned.

  The adherend block 8b is a disk-like shape covering the filter 2, and has a male screw part 21 into which a female screw 11 of the edge metal 8a is screwed on a circular lower surface. is there. A fitting hole 23 through which the vibration shaft 13 passes is provided at the center, and is fixed to the vibration shaft 13 by welding 25. Further, the suction block 27b is provided with a suction / discharge hole 27 in an L-shape, female threads are formed at both ends thereof, the liquid pipe 10 is screwed to the female screw opened on the lower surface, and the female screw opened on the side surface. The connecting hand 29 of the discharge hose 12 is screwed to the top. In FIG. 3, reference numeral 31 denotes a stopper for preventing the liquid pipe 10 from dropping off.

  The fitting metal block 9b is also attached to the vibration shaft 13 by the fitting hole 32 and the weld 34 and fits inside the edge metal 9a. The male screw portion 33 is straight on the lower surface of the fitting part and the edge metal 9a. Projected to hang down. In order to fasten the fitting metal block 9b to the edge metal 9a, nuts 37 and 38 are screwed to the male screw portion 33 in two stages. Both nuts 37 and 38 are made of a copper alloy and stainless steel, which are easy to adapt to each other and have different hardness so as not to come off due to vibration or cause metal fatigue.

  In order to assemble the filter 2, it is inserted from below the vibration shaft 13 (FIG. 2), the upper edge metal 8a is applied to the adherend block 8b, and the lower edge metal 9a is fitted into the fitting metal block 9b. After rotating and screwing the edge metal 8a into the adherend block 8b, the upper and lower nuts 37 and 38 are screwed into the lower male screw portion 33 and tightened. If it does so, it will be assembled in a stable state that will never come off due to vibration.

  FIG. 1 shows the state of use of the liquid filtration device R assembled in this way. In the experiment, the motor was installed at the upper end of the vibration shaft 13 by immersing it in a turbid water liquid 41 in which clay particles were suspended. 15 and the pump 39 connected to the discharge hose 12 were started and the operation was started. As a result, no clogging occurred even after 7 hours or more, and purified water was discharged from the end of the discharge hose 12. Continued. On the other hand, when the motor 15 was stopped and the pump 39 was operated without vibration, the amount of discharged water gradually decreased and clogged in about 2 to 3 minutes and became unable to be purified.

  When the reason why the pores 7 are not blocked by the clay particles is maintained for a long time while the cleanable state is maintained, as described above, the vibration of the vibrator 3 is caused by the filter material 2a through the caps 8 and 9 having a large mass. And the vibration exerts a particularly strong force from the central vibration shaft 13 to the outer periphery (FIG. 5, arrow P), so that it is sucked into the eye 7 from the outside toward the inside of the filter 2. It is considered that the particles M are repelled by touching the lip 43, and from the strength and direction of vibration, unless the particles are much smaller than the eye holes 7, they are repelled by the lip 43 in advance.

  The filtration accuracy of the filter material 2a this time is 2 μm for the eye holes 7, but the next time we plan to experiment with a filtration accuracy of 0.5 μm. We are confident that the same results can be obtained from the above experiments and verifications.

  FIG. 6 shows an example of a liquid filtration / concentration tank T, in which a liquid filtration device R having the same structure as described above is installed at the center of a cylindrical tank 51. The tank 51 is provided with an inlet 53 at the lower end and an outlet 55 at the upper end so that the liquid containing particles is filled inside.

  As for the operation, when the stock solution is injected from the inlet 53 while the pump 39 and the motor 15 of the liquid filtration device R are driven, the liquid 41 is sucked into the filter 2 and purified, and the discharged hose 12 is purified. Accordingly, the liquid is reduced by that amount, whereby the particles are concentrated, and the concentrated liquid is discharged from the outlet 55. In other words, the liquid filtration / concentration tank T is used to utilize both or one of the functions in a two-line format capable of simultaneously purifying and concentrating the stock solution.

R Filtration device for liquid T Filtration / concentration tank for liquid 1 Substrate 2 Filter 2a Filter material 3 Vibrator 8, 9 Cap 8a, 9a Rim 8b Deposit block 9b Fitting block 10 Liquid port pipe 11 Female screw 12 Discharge hose 13 Vibration Shaft 15 Motor 17 Rotating shaft 18 Eccentric rotor 21, 33 Male thread 37, 38 Nut 39 Pump 51 Tank 53 Inlet 55 Outlet

Claims (4)

  The upper and lower ends of a cylindrical filter material are sealed with caps in a thick metal block to form a hollow filter that can be immersed in the liquid to be filtered, and a liquid outlet pipe connected to the discharge hose so that the suction force of the pump can reach the filter. And a vibrator that can vibrate the filter material using one of the caps at both ends of the filter as a medium, and the pump is of a type capable of switching between normal and reverse so that the liquid can flow backward. Filtration device for liquid.   A vertically long liquid filtration device is provided at the center of the tank having a liquid inlet at the lower end and an outlet at the upper end. The liquid filter is a metal block on the upper and lower ends of a cylindrical filter material. A hollow filter that can be immersed in the liquid to be filtered is formed, and a liquid pipe connected to the discharge hose is provided inside the filter so that the suction force of the pump can reach. A liquid filtration / concentration tank characterized in that a vibrator capable of exerting vibration on a filter material using a cap or one of the caps as a medium is provided and the pump is capable of switching between normal and reverse so that the liquid can flow backward.   The vibrator is equipped with a motor at the upper end of a cylindrical vibration shaft located at the center of the filter, and an eccentric rotor is fixedly attached to the rotation shaft of the motor supported on the center of the vibration shaft. 3. The liquid filtration device and the liquid filtration / concentration tank according to claim 1, wherein the vibration shaft is passed through the centers of the caps at both ends, and the vibration shaft is fixed so that vibration is applied to both of them. The liquid filtering device is composed of a base equipped with a liquid pipe, a discharge hose and a vibration device, and a filter that is detachably attached from below, and the filter is a part of a cap at the upper and lower ends of a cylindrical filter material. The ring-shaped rim that constitutes the ring is integrated and integrated, and the upper end rim has an internal thread on the inner peripheral surface, and the base vibrates so that the filter can be received from below. The adherend block where the upper end surface of the filter hits the upper end of the shaft and the fitting metal block that fits into the lower end edge are fixed to the lower end, respectively. A male screw portion to which the female screw of the edge metal is screwed is vertically provided, and a male screw portion is continuously provided on a lower surface of a portion fitted to the lower metal edge, and the male screw portion is screwed to the male screw portion. Tighten to the edge The top and bottom caps are assembled with the base and filter block at the upper end of the filter, and the base and filter are integrated at the same time. The liquid filtration device and the liquid filtration / concentration tank according to claim 3.

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