JP2005238018A - Screen residue separator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen residue separator capable of separating screen residue from water in an energy-saving manner without using any exclusive power source such as an electric motor. <P>SOLUTION: The screen residue separator is constructed by providing a rotary rake 2 that rakes screen residue in a cylindrical screen 1 in a manner that the rake 2 can be concentrically swirled inside the cylindrical screen 1, fitting the rotary rake 2 with impellers 21, providing a buffer tank 3 into which sewage containing the screen residue is fed and which attenuates the stream of the sewage over the cylindrical screen 1, feeding overflow water from the buffer tank 3 into the impellers 21, and providing a rotary scraper 4 that is rotated by the driving force of the rotary rake 2 and scrapes the screen residue S behind the rotation of the rotary rake 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a screen separator, and more particularly to a screen separator that can separate screen residue and water with energy saving without requiring dedicated power such as an electric motor.

In a system that seals and transports the residue collected by the dust removal device in the sand basin with a pump, a residue separation device is required to separate the residue and water after pumping.
Conventional screen residue separators are mainly used to rotate a fine cylindrical screen into which screen residue is charged with an electric motor, and scrape the screen residue with a rotary scraper.

  However, since the conventional screen separation device rotates the cylindrical screen with an electric motor, the screen separation device that operates for a long time consumes a large amount of energy and requires maintenance of the motor.

  In view of the above-described problems of the conventional screen separator, the present invention provides a screen separator capable of separating screen and water with energy saving without requiring dedicated power such as an electric motor. The purpose is to do.

  In order to achieve the above object, the screen separator of the present invention is configured to scrape the screen screen residue in the screen screen separator that separates the screen residue, which has been fried up from a sand basin, etc., into a cylindrical screen. A rotating rake to be taken is arranged concentrically in a cylindrical screen so as to be rotatable, an impeller is formed on the rotating rake, and a buffer tank in which sewage containing debris is introduced and the water flow of the sewage is reduced. A rotating scraper provided above the cylindrical screen, introducing overflow water from the buffer tank to the impeller, and rotating behind the rotating rake by the driving force of the rotating rake to scrape off the residue. Features.

  In this case, a brush that rubs the inner surface of the cylindrical screen can be attached to the rotating rake.

  Moreover, the overflow part which discharges the water which rose to the abnormal water level can be provided in the water collection part of the water filtered from the rotary rake.

  In addition, the buffer tank can be provided with an overflow water introduction path that reversely rotates the rotating rake.

  According to the screen separator of the present invention, the screen rake scraped from a sand basin or the like is introduced into a cylindrical screen and separated from water. In the screen separator, the rotating rake that scrapes the screen residue is cylindrical. A buffer tank is disposed above the cylindrical screen so as to be concentrically rotatable in the screen, forming an impeller on the rotating rake, and introducing sewage containing residue and reducing the water flow of the sewage. Since a rotating scraper is provided for introducing overflow water from the buffer tank into the impeller and rotating behind the rotating rake by the driving force of the rotating rake to scrape off residue, the overflow water of the buffer tank is provided. The rotary rake provided in the cylindrical screen is rotated without an electric motor, and the residue is scraped up and scraped off with a rotary scraper to the chute and transported to the subsequent equipment. It can be.

  In this case, by attaching a brush that rubs the inner surface of the cylindrical screen to the rotary rake, it is possible to rub the inner surface of the cylindrical screen and prevent clogging of the cylindrical screen.

  In addition, by providing an overflow part in the water collection part of the water filtered by the cylindrical screen to discharge the water that has risen to the abnormal water level, the cylindrical screen is clogged, and when it rises to the abnormal water level, You can make it flow so that the chute does not overflow.

  In addition, by providing a buffer tank with an overflow water introduction path that reversely rotates the rotating rake, the flow of the overflow water can be switched, and the rotating rake and rotating scraper can be rotated in reverse. It is possible to prevent the residue from growing.

  Hereinafter, embodiments of the residue separator according to the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the residue separator according to the present invention.
This screen separator is a device that introduces a screen S from a sand basin or the like into the cylindrical screen 1 and separates it from water. A rotary rake 2 that scrapes the screen S from the cylindrical screen 1 is used as a cylindrical screen 1. A buffer tank 3 is disposed in the cylindrical screen 1 so as to be concentrically rotatable in the inside thereof, and an impeller 21 is formed in the rotary rake 2 and waste water containing residue is introduced and the water flow of the waste water is reduced. A rotating scraper 4 that introduces overflow water from the buffer tank 3 into the impeller 21 and rotates behind the rotating rake 2 by the driving force of the rotating rake 2 to scrape the residue S. Provided.

The residue S is, for example, scraped up by a dust removing device (not shown) in the sand basin and pumped to the residue separating device together with sewage by a pump.
Sewage and residue pumped by the pump are introduced into the buffer tank 3 from the inflow pipe 31 in order to avoid short-passing the cylindrical screen 1 with water pressure. The buffer tank 3 is installed above the cylindrical screen 1.

The cylindrical screen 1 is made of a fine material having a width of 2 mm, for example, and is installed as a fixed screen in the casing 5 of the screen separator.
On the upper part of the horizontal cylindrical screen 1, an overflow water introduction path 6 for rotating the rotary rake 2 in the forward direction and an overflow water introduction path 7 for rotating the rotary rake 2 in the reverse direction are provided in a tangential direction. At the position of the rotary scraper 4, a discharge port 8 for discharging the residue S is provided.
A filtered water collection unit 9 is provided under the cylindrical screen 1. The collected water unit 9 is provided with an overflow unit 10 for discharging water that has risen to an abnormal water level. Yes.

As shown in FIGS. 3 to 4, the rotary rake 2 is composed of, for example, a large number of rake claws 22 extending in the radial direction at intervals of 45 °, and the tips of the rake claws 22 are connected to the cylindrical screen 1. It is rotatably arranged in the cylindrical screen 1 so as to scrape the residue S.
The rotary rake 2 includes an impeller 21 constituted by a large number of rake claws 22, and the overflow water of the buffer tank 3 is usually introduced into the impeller 21 from the introduction path 6 of normal rotation.
A brush 23 that rubs the inner surface of the cylindrical screen 1 is attached to the rotary rake 2.

The buffer tank 3 includes a pair of overflow water introduction paths 6 and 7 for rotating the rotary rake 2 forward and backward.
As shown in FIG. 2, each introduction path 6, 7 switches the overflow water flow by selectively stopping the overflow weirs 61, 71 before and after the buffer tank 3 with the overflow prevention weir 62. The rotary rake 2 and the rotary scraper 4 can be rotated in the reverse direction, whereby the rotary rake 2, the brush 23, and the rotary scraper 4 can be entangled and the residue S can be prevented from being unwound.

The rotary scraper 4 is formed in a cylindrical shape disposed at the discharge port 8 of the rotary rake 2 and is connected to the rotary rake 2 by the V belt 41 so that the rotation of the rotary rake 2 is transmitted in the same direction. .
As shown in FIG. 4, the rotary scraper 4 is a large number of scrapers 42 provided on the outer periphery, scrapes the residue S of the rotary rake 2 onto the chute 11, and conveys it to the subsequent equipment by a conveyor (not shown). ing.
An inspection door 51 is provided on the casing 5 behind the rotary scraper 4.

Thus, in the screen separator of the present embodiment, the screen S scraped from the sand basin or the like is introduced into the cylindrical screen 1 and separated from the water, and the screen S is scraped off from the screen S in the screen separator. The rotating rake 2 to be taken is disposed concentrically in the cylindrical screen 1 so that the impeller 21 is formed in the rotating rake 2 and the overflow water in the buffer tank 3 provided above the cylindrical screen 1 is Since the rotary scraper 4 that is introduced into the impeller 21 and is rotated by the driving force of the rotary rake 2 to scrape the residue S is provided behind the rotary rake 2, the potential energy of the overflow water in the buffer tank 3 is determined. The rotary rake 2 provided in the cylindrical screen 1 is rotated without an electric motor to scrape the residue S, and the scraped residue S is scraped off to the chute by the rotary scraper 4 and transferred to the subsequent equipment. It can be.
In this case, by attaching a brush 23 that rubs the inner surface of the cylindrical screen 1 to the rotating rake 2, the inner surface of the cylindrical screen 1 can be rubbed together with the rake claws 22 to prevent the cylindrical screen 1 from being clogged.
Further, by providing an overflow portion 10 for discharging the water that has risen to the abnormal water level in the water collecting portion 9 of the water filtered by the cylindrical screen 1, the cylindrical screen 1 is clogged, and this rises to the abnormal water level. It is possible to overflow the overflow portion so that water does not overflow the chute 11.
Further, by providing the buffer tank 3 with the overflow water introduction path 7 for reversely rotating the rotary rake 2, the flow of the overflow water can be switched and the rotary rake 2 and the rotary scraper 4 can be reversely rotated. It is possible to prevent the residue S from growing by being entangled with the brush 23 and the scraper 42.

  As mentioned above, although the residue separator of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure described in the Example is combined suitably, The configuration can be changed as appropriate without departing from the spirit of the invention.

  As described above, since the screen residue separator of the present invention has the characteristic of separating the screen residue and water with energy saving without requiring dedicated power such as an electric motor, It can be used suitably for the use of foreign matter strainers.

It is sectional drawing which shows one Example of the residue separator of this invention. It is a top view of a buffer tank. It is the elements on larger scale which show a cylindrical screen and rotation rake. It is the elements on larger scale which show a rotation rake and a rotation scraper.

Explanation of symbols

S Screen 1 Cylindrical screen 2 Rotating rake 21 Impeller 22 Rake claw 23 Brush 3 Buffer tank 31 Inflow pipe 4 Rotating scraper 41 V-belt 42 Scraper 5 Casing 51 Inspection door 6 Forward rotation introduction path 61 Overflow weir 62 Overflow prevention Weir 7 Reverse rotation path
71 Overflow weir 8 Discharge port 9 Catchment part 10 Overflow part 11 Chute

Claims (4)

  In the residue separator that separates the residue from the sedimentation pond that has been scraped up from the sand basin into the cylindrical screen, a rotating rake that scrapes the residue from the cylindrical screen is arranged concentrically in the cylindrical screen. A buffer tank is formed above the cylindrical screen, in which sewage including slag is introduced and the water flow of the sewage is reduced, and the overflow water from the buffer tank is passed through the blades. A debris separator comprising a rotary scraper that is introduced into a vehicle and is rotated by a driving force of the rotary rake to scrape off debris behind the rotary rake.   2. The screen separator according to claim 1, wherein a brush for rubbing the inner surface of the cylindrical screen is attached to the rotary rake.   3. A screen separator according to claim 1, wherein an overflow part for discharging water that has risen to an abnormal water level is provided in a water collecting part of water filtered by a cylindrical screen.   4. The screen separator according to claim 1, wherein an overflow water introduction path for reversely rotating the rotary rake is provided in the buffer tank.

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