JPH05146610A - Device for removing impurity in water - Google Patents

Abstract

PURPOSE:To always hold a strainer to a clean state by scraping off the impurities such as shells bonded to the filter surface of a filter element and to rotationally drive the scraper by utilizing a water stream without using a special power source. CONSTITUTION:Impurities such as shells are removed by the filter element 2 provided in piping 1 consisting of an inflow pipe 11, an outflow pipe 12 and an L-shaped bent pipe 13 and the scraper provided in close vicinity to a filter surface in a rotatable manner is provided in the filter element 2 so as to be rotationally driven by the flowing water stream in the piping 1 and impurities such as shells scraped-off to the downstream region of the filter element 2 are discharged out of the piping 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied, for example, to the case where seawater is pumped up and supplied to various treatment equipments through a pipe for water passage, and foreign matters such as shells mixed in water such as seawater. The present invention relates to a contaminant removing device for removing impurities.

[0002]

2. Description of the Related Art Generally, when removing contaminants such as shells mixed in seawater, a filter element is provided in a distribution pipe of seawater, and by passing seawater through the filter element, contaminants such as shells are provided. However, contaminants tend to adhere to the filter surface of the filter element and gradually increase the water flow resistance. In particular, when shells mixed in seawater adhere, the shells grow along the filter surface, the filter is clogged within a short period, and the seawater cannot flow.

Therefore, conventionally, a vortex generator such as a butterfly valve is installed upstream of a filter element provided in a water passage for seawater or the like, and the vortex generator is operated regularly or when necessary. , A eddy current is generated and the eddy current is used to remove contaminants such as shells adhering to the filter surface. Then, when clogging is caused, the flow path is switched to the other strainer side, and one strainer is taken out and washed during that time to remove the clogging of the strainer.

[0004]

Since the conventional apparatus for removing underwater contaminants is constructed as described above, in the former case, a special vortex generator and a drive source for operating this vortex generator are provided. In addition, in the latter case, the strainer must be frequently washed, and there is a problem that the flow path needs to be opened each time this washing is performed. In particular, the cleaning of seawater system equipment has a very bad working environment and requires a lot of labor.

The present invention has been made to solve the above problems, and does not require a special power source or human power, and foreign matter such as shells attached to the filter surface. It is an object of the present invention to provide an underwater contaminant removal device capable of effectively removing water and enabling smooth continuous water flow for a long period of time.

[0006]

In order to achieve the above object, the underwater contaminant removing apparatus according to the present invention includes a filter element for removing contaminants mixed in the flowing water in the water passage pipe. In the apparatus for removing underwater contaminants provided, a scraper that is rotatable in the vicinity of the filter surface of the filter element is provided inside the filter element, and the scraper is used as a water turbine driven and rotated by the water flow in the pipe. In addition to being interlocked with each other, a drain valve-equipped discharge port for discharging the impurities scraped from the filter surface of the filter element to the outside of the pipe is provided.

[0007]

According to the present invention having the above-described structure, the water turbine is driven and rotated by utilizing the water flow in the pipe, and the scraper in the filter element is rotated in conjunction with the water turbine to cause contamination such as shells attached to the filter surface. Objects will be scraped off and removed. Therefore, the scraper can be constantly rotated without using a special power source, and the filter surface can be always kept clean. In addition, shells scraped off the strainer regularly, or as needed,
It can be discharged to the outside of the pipe by opening the discharge port via the drain valve.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view showing an underwater contaminant removing apparatus according to an embodiment of the present invention. In FIG.
Is a pipe through which seawater flows, and is composed of an inflow pipe 11, an outflow pipe 12 whose axis is orthogonal to the inflow pipe 11, and an L-shaped bent pipe 13 that connects and connects the two pipes 11, 12. 2 is a filter element on a bottomless cylinder installed in the bent pipe 13 of the seawater distribution pipe 1; 3 is the filter element 2;
The scraper 3 is a rotatable scraper arranged close to the filter surface, and the scraper 3 has a shaft 31 rotatably supported in the pipe 1 via bearing members 34 and 35.
And a boss portion 32 inserted and fixed to the shaft 31, and a plurality of blades 33 integrally extending from the boss portion 32. As shown in FIG. 2, the blades 33 of the scraper 3 are arranged at intervals in the circumferential direction and the axial direction in order to reduce the flow resistance of seawater as much as possible.

A water turbine 4 is provided upstream of the filter element 2 and fixed to the shaft 31 so as to be driven and rotated by the flowing seawater in the pipe 1. Reference numeral 5 denotes a bonnet which is connected to the downward opening of the bent pipe 13 in the downstream region of the filter element 2, and 6 denotes a drain valve provided at a lower discharge port 5a of the bonnet 5.

Next, the operation of the above configuration will be described. As shown in FIG. 1, seawater that has flowed in from the inflow pipe 11 of the pipe 1 in the direction of arrow a flows out of the outflow pipe 12 in the direction of arrow b through the inside of the bent pipe 13. At this time, contaminants such as shells mixed in seawater are removed by the filter element 2 installed in the bent tube 13, and the contaminants thus removed are filtered element 2
Easily adheres to the filter surface (mesh) of. Here, the water turbine 4 is driven and rotated by the seawater flowing in the pipe 1, and the rotational force of the water turbine 4 is transmitted to the scraper 3 in the filter element 2 via the shaft 31 to rotate the scraper 3. Therefore, as the scraper 3 rotates, contaminants such as shells adhering to the mesh of the filter element 2 are constantly scraped off, whereby the filter element 3 is always kept in a clean state for a long time. It does not cause clogging even when it is continuously used.

In the above embodiment, the scraper 3 rotatably provided in the filter element 2 is interlocked with the water turbine 4 which is disposed upstream of the scraper 3 and driven and rotated by the circulating seawater in the pipe 1. However, the scraper 3 itself may be driven and rotated by the circulating seawater in the pipe 1. That is, the three blades 33 of the scraper may be twisted so that the scraper 3 also serves as the water turbine 4.

In the above embodiment, the case where the pipe 1 including the inflow pipe 11, the outflow pipe 12, and the L-shaped bent pipe 13 is used has been described, but a straight pipe can be similarly used. . In this case, the filter element 2 may be formed in a flat plate shape, and the scraper 3 may be formed by a plurality of scraping plates radially extending on the same plane as the flat plate filter element 2.

[0013]

As described above, according to the present invention, the scraper for scraping off contaminants such as shells attached to the filter surface of the filter element is driven and rotated by utilizing the water flow in the pipe. Since it is configured as described above, it is possible to eliminate the need for a special power source for driving and rotating the scraper, as well as the structurally complicated eddy current generator, and it is easy to configure the entire device at low cost. In addition, there is no need for washing work or the like by opening the flow path (interrupting the purifying action), so that there is an effect that the continuous water-passing operation can be performed for a long period of time in a labor-saving manner.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a device for removing underwater impurities according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part in FIG.

[Explanation of symbols]

 1 Piping 2 Filter element 3 Scraper 4 Water turbine 5 Bonnet 6 Drain valve

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B01D 35/16 6953-4D 6953-4D B01D 35/02 A

Claims (1)

[Claims] 1. An underwater contaminant removal device comprising a filter element for removing contaminants mixed in water flow in a water conduit, wherein a filter of the filter element is provided inside the filter element. A rotatable scraper is provided close to the surface, and this scraper is interlocked with a water turbine driven and rotated by the water flow in the pipe, and the impurities scraped off from the filter surface of the filter element are discharged to the outside of the pipe. An underwater contaminant removal device characterized by having a discharge port with a drain valve.