JP2008264724A - Strainer apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a strainer apparatus capable of easily and surely preventing clogging of a strainer and reducing cleaning burdens. <P>SOLUTION: The strainer apparatus 1 for removing foreign particles in a liquid by disposing a mesh-like strainer 5 in a cylindrical shape between a liquid inflow port 2 and an outflow port 3 is provided with a water wheel 6 coaxially and freely rotatably attached to the inside of the strainer 5 and having a plurality of blade parts 62. The water wheel 6 has brush-like scrapers 63 provided on the distal ends of the blade parts 62 and filters 62b provided so as to close parts between frames 62a constituting the blade parts 62, and rotation is regulated to only one direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a strainer device that removes foreign particles in a liquid.

  Conventionally, as this kind of strainer device, a device in which a liquid is passed through a cylindrical strainer (filter) and foreign particles in the liquid are removed by the strainer is widely used (see, for example, Patent Document 1). .

According to such a strainer device, foreign particles in the liquid are collected by the strainer. However, due to use, scale adheres to the strainer and causes clogging. For this reason, a scraper is placed in contact with the outer peripheral surface of the strainer, and every time a certain period of time elapses, the strainer is rotated via a motor to scrape off foreign matter and water particles adhering to the outer peripheral surface of the strainer. To be removed.
No. 3010033 gazette

  However, in the conventional strainer device, in order to prevent the strainer from being clogged, the flow of the liquid is stopped and the strainer is rotated every time a certain period (for example, half a year) passes, The cleaning work must be performed, which is complicated.

  In addition, in order to clean the strainer at regular intervals, the strainer device must be equipped with a motor and means for transmitting the rotational driving force to the strainer, and the strainer device itself is large. This increases the manufacturing cost and makes it difficult to reduce the size of the apparatus.

  In particular, if the purpose of the strainer is to remove foreign particles larger than a certain particle size in the liquid, it is necessary to make the strainer device itself a large-scale configuration for removing clogging due to water scale. Can not.

  Then, an object of this invention is to provide the strainer apparatus which can prevent the strainer's clogging easily and reliably and can reduce a cleaning burden.

  The present invention provides a strainer device that removes foreign particles in the liquid by arranging a cylindrical mesh strainer between an inlet and an outlet of the liquid, and can rotate coaxially inside the strainer. The water wheel has a plurality of blade portions and a brush-like creper provided at the tip of each blade portion.

  According to such a strainer device, a water turbine provided with a scraper at the tip of the blade portion is disposed inside the cylindrical strainer, and the water turbine is always rotated by inflow / outflow of liquid to the strainer device. At this time, the brush-shaped scraper circulates around the inner surface of the strainer to prevent the water from adhering to the strainer. Thereby, clogging of the strainer can be easily and reliably prevented, and the cleaning burden can be reduced.

  It is preferable that the water wheel has a filter that is restricted in rotation in only one direction and is provided so as to close a space between the frames constituting the blade portion. By providing a filter on the blades of the water wheel, it is possible to attach to the filter the scale that would have adhered to the strainer if there was no scraper (calcium crystals such as calcium carbonate or magnesium carbonate, which is the origin of the scale) The liquid passing through the strainer device can be filtered. At this time, since the rotation direction of the water turbine is restricted to one direction, the scale and the fine suspended matter in the liquid can always adhere to one surface of the filter. The kimono does not float up and flow out of the outlet.

  Moreover, it is preferable that the said scraper and the said filter have the same width as the axial length of the said strainer. By making the width of the brush-shaped scraper equal to the axial length of the strainer, the entire cylindrical strainer can be brushed evenly, and clogging of the strainer can be prevented more reliably. In addition, by adjusting the width of the filter to the axial length of the strainer, it is possible to prevent a gap from being generated between the blade portion and the strainer, and to adhere scales or minute suspended matters in the liquid to the filter without leakage.

  Furthermore, it is preferable that the water wheel is detachably attached to the inside of the strainer. By configuring the water wheel to be detachable, the water wheel can be periodically replaced. In particular, when the water turbine is provided with a filter, the strainer device can be easily cleaned by periodically replacing the water wheel itself, and the cleaning burden can be greatly reduced.

  Hereinafter, the strainer device of the embodiment to be described is provided, for example, in a water supply pipe that supplies water to an electric water heater or an electric water heater, and prevents foreign matter from entering these devices through the water supply pipe. .

  As shown in FIG. 1, the strainer device 1 of the present embodiment includes a main body 4 having an inlet 2 on the upstream side of the water supply pipe and an outlet 3 on the downstream side, a cylindrical and mesh-like strainer 5, and a strainer. 5 is provided with a water turbine 6 rotatably mounted in 5 and a lid portion 8 capable of sealing the main body 4 via an O-ring 7.

  The main body 4 is a metal cylindrical rigid body, and an inflow port 2 and an outflow port 3 communicating with the inside protrude at a predetermined angle (for example, 120 °), and each tip is connected to a water supply pipe or the like. It can be connected.

  The main body 4 includes a cylindrical central shaft body 41 protruding from the bottom portion onto the central axis. The inner surface of the central shaft body 41 is threaded, and the lid portion 8 can be screwed to the main body 4 by a screw tool 81 included in the lid portion 8.

  The strainer 5 is a cylindrical body that can be fitted to the inner wall of the main body 4, and is formed by stretching a metal wire (for example, stainless steel) so as to have a predetermined interval (for example, 1 mm). ing. As the mesh interval, various types such as those having a large interval and those having a small interval can be adopted depending on the purpose for which the strainer device 1 is used.

  As shown in FIG. 2, the water turbine 6 includes a hollow rotary shaft 61 that is rotatably attached to the central shaft body 41, and four blade portions 62 that are provided so as to extend radially from the rotary shaft body 61. And a brush-like scraper 63 attached to the tip of each blade 62, and a disc-like regulating member 64 provided on one end side of the rotating shaft 61.

  The wing | blade part 62 is provided with the grid | lattice-like flame | frame 62a which comprises the external shape, and the filter 62b provided so that the space between the flame | frames 62a might be block | closed. The filter 62b is composed of a osmotic membrane body capable of filtering the liquid flowing into the strainer device 1 and removing the fine suspended matters and scale.

  The blade portion 62 is designed so that its entire length is substantially equal to the radius of the strainer 5, and the scraper 63 contacts the inner periphery of the strainer 5. Further, the width (height in the drawing) of the blade portion 62 and the scraper 63 is configured to be equal to the axial length of the strainer 5, and the blade portion 62 disposed in the strainer 5 is in the cylindrical strainer 62. Is divided into four spaces without any gaps.

  The regulating member 64 has a ratchet gear 64a formed on the peripheral edge thereof, and engages with a claw portion provided on the circumference of the bottom portion of the main body 4 (not shown) so that the rotation direction is one direction (clockwise in the figure). Regulated by

  The rotating shaft body 61, the frame 62a, and the regulating member 64 are integrally formed of a synthetic resin material, and the water wheel 6 is detachable from the main body 4 via the rotating shaft body 61.

  Next, the operation of the strainer device 1 of the present embodiment will be described with reference to FIG. FIG. 3 is a partial cross-sectional view of the strainer device 1.

  First, water, which is a liquid flowing into the main body 4 from the inflow port 2, flows from the outer periphery of the strainer 5 to the inner periphery, and foreign matters having a predetermined particle diameter or more are collected on the outer periphery of the strainer 5.

  And the water which flowed in in the main body 4 from the inflow port 2 flows toward the outflow port 3 with the pressure, as shown by the arrow in the figure. Here, since the rotation direction of the water turbine 6 is regulated clockwise, a clockwise water flow occurs and the water turbine 6 rotates slowly clockwise. At this time, the water wheel 6 rotates while the ratchet gear 64a is in contact with a claw portion (not shown) provided on the circumference of the bottom of the main body 4, so that the rotation speed does not exceed a predetermined speed. Here, the predetermined speed is assumed to be a speed at which water flowing in from the inflow port 2 flows out of the outflow port 3 without passing through the filter 62b.

  When the water wheel 6 rotates, the scraper 63 that contacts the inner surface of the strainer 5 circulates around the inner surface of the strainer 5 and prevents the scaler 5 from adhering to the scale. Thereby, clogging of the strainer 5 can be easily and reliably prevented.

  Then, the scale or fine suspended matter that has been prevented from adhering to the strainer 5 by the scraper 63 passes through the filter 62b and is filtered before flowing out from the outlet 3. At this time, since the scales and minute suspended matters removed by the filter 62b are limited to foreign matters having a particle diameter that have passed through the strainer 5, various foreign matters adhere to the filter 62b and cause clogging in a short time. It can be avoided.

  Furthermore, since the rotation direction of the water turbine 6 is regulated clockwise, the water turbine 6 rotates in the reverse direction, so that the water scale and fine suspended matter adhering to the one surface of the filter are resuspended and flow out from the outlet 3. Absent. Even after the blade 62 rotates and passes through the outlet 3, the inside of the main body 4 remains a clockwise water flow as a whole (see the two-dot chain line arrow in the figure), so that it adheres to one surface of the filter 62 b. Dust and fine suspended matter will not re-float.

  As described above, the strainer device 1 according to the present embodiment can prevent the brush-shaped scraper 63 from circulating around the inner surface of the strainer 5 to prevent water from adhering to the strainer 5, and without the scraper 63. The scale that would have been attached to the strainer 5 can be attached to the filter 62b, and the water in the water supply pipeline can be filtered stepwise.

  Thereby, the strainer 5 can be prevented from being easily clogged, and the water turbine 6 including the filter 62b is configured as a detachable consumable, thereby greatly reducing the cleaning burden.

The exploded view which shows the internal structure of the strainer apparatus of embodiment. FIG. 2 is a detailed view of the water wheel of FIG. 1. Explanatory drawing which shows the action | operation of the strainer apparatus of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Strainer apparatus, 2 ... Inlet, 3 ... Outlet, 4 ... Main body, 5 ... Strainer, 6 ... Water wheel, 7 ... O-ring, 8 ... Lid part, 41 ... Center shaft body, 61 ... Rotating shaft body, 62 ... blade part, 62a ... frame, 62b ... filter, 63 ... scraper, 64 ... regulating member, 81 ... screw tool.

Claims (4)

In a strainer device for disposing foreign particles in the liquid by disposing a cylindrical and mesh strainer between an inlet and an outlet of the liquid,
Provided with a water wheel rotatably mounted coaxially inside the strainer,
The water turbine has a plurality of blade portions and a brush-like creper provided at the tip of each blade portion. The strainer device according to claim 1, wherein
The said water turbine has a filter provided so that rotation might be controlled only to one direction and to block | close between the flame | frames which comprise the said blade | wing part. The strainer device according to claim 2,
The strainer device, wherein the scraper and the filter have the same width as the axial length of the strainer. The strainer device according to any one of claims 1 to 3,
The strainer device, wherein the water wheel is detachably attached to the inside of the strainer.

Images