JP2008038506A - Screen circulating type dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen circulating type dust collector capable of saving the volume of water used by limiting the volume of water sprayed to a minimum by means of spraying a screen with water with adequate timing required for removing dust and cleaning the screen. <P>SOLUTION: In the screen circulating type dust collector in which impurities in water are captured by a circulating screen 1; the impurities captured are removed from the screen 1 and is recovered to a chute 3 by spraying compressed water from the washing nozzle 2 above water; and also a valve device 4 for intermittently supplying water to the washing nozzle 2 and intermittently spraying water from the washing nozzles 2 is installed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a screen circulation type dust remover used in sewage treatment and river drainage treatment, and in particular, by spraying at the timing necessary for unloading and cleaning the screen, the amount of water used is kept to the minimum necessary level. The present invention relates to a screen circulation type dust remover designed to save money.

  The screen circulation type dust remover is a dust remover that is installed in, for example, a water channel, passes the running water while capturing the dust, and scrapes the dust captured by the rotation of the screen from the water to remove it outside the water channel.

  Specifically, this screen circulation type dust remover forms a screen by connecting a plurality of screen panels in an endless manner, captures impurities in the water by the circulating screen, and screens at the upper circumference on the water. By spraying pressurized water from the outside, the unloading and cleaning of the foreign matter from the screen is performed and collected in a chute.

  The cleaning nozzle that sprays pressurized water uses clean water or treated water, but requires a large amount of water to spray continuously in accordance with the operation of the screen.

  In view of the problems of the conventional screen circulation type dust remover, the present invention is intended to save water by minimizing the amount of water used by spraying at the timing necessary for unloading and cleaning the screen. An object of the present invention is to provide a screen circulation type dust remover.

  In order to achieve the above object, the screen circulation type dust remover of the present invention captures contaminants in water by a circulating screen and sprays pressurized water from a washing nozzle on the water to remove the captured contaminants from the screen. In the screen circulation type dust remover which is unloaded and collected in a chute, a valve device for intermittently supplying water to the washing nozzle and spraying intermittently from the washing nozzle is provided.

  In this case, it is possible to provide a cam mechanism that is driven by a screen circulation device and opens and closes the water supply valve of the valve device.

  Further, when the screen panel comes to the spray position of the cleaning nozzle, the water supply valve can be opened and closed so that the cleaning nozzle sprays in synchronization.

  According to the screen circulation type dust remover of the present invention, contaminants in the water are captured by the circulating screen, and by spraying pressurized water from the washing nozzle on the water, the captured contaminants are unloaded from the screen, and the chute In the screen circulation type dust remover that is to be collected, a valve device that intermittently supplies water to the cleaning nozzle and intermittently sprays from the cleaning nozzle is provided, so that the timing required for unloading and cleaning the screen is provided. By spraying intermittently, the amount of water used can be minimized and water can be saved.

  In this case, by providing a cam mechanism that is driven by the screen circulation device and opens and closes the water supply valve of the valve device, the operation and control of the intermittent spray can utilize the movement of the screen, and another power, electric control device, etc. Is no longer necessary.

  In addition, when the screen panel comes to the spray position of the cleaning nozzle, by opening and closing the water supply valve so that the cleaning nozzle sprays synchronously, the spray is sprayed at the timing necessary for unloading and cleaning the screen, and the amount of water used is reduced. Water can be saved with the minimum necessary.

  Embodiments of a screen circulation dust remover of the present invention will be described below with reference to the drawings.

1 to 3 show a first embodiment of a screen circulation type dust remover according to the present invention.
This screen circulation type dust remover captures contaminants in the water by the circulating screen 1 and sprays pressurized water from the washing nozzle 2 on the water, thereby unloading the captured contaminants from the screen 1, and the chute 3. To collect.
The screen circulation type dust remover is provided with a valve device 4 that intermittently supplies water to the cleaning nozzle 2 and sprays intermittently from the cleaning nozzle 2, and is driven by the circulation device of the screen 1. The cam mechanism 5 for opening and closing the water supply valve 41 is provided.

As shown in FIG. 3, the screen 1 forms a plurality of screen panels 12 by arranging a large number of screen plates 11 side by side in a comb-like shape, and the endless screen 1 by linking these screen panels 12. Is forming.
The screen 1 is circulated by a conveyor chain 8 driven along a rail 7 by a driving sprocket 6.

The conveyor chain 8 includes four rollers 81 in one link, and is disposed on a link plate 82 formed in a mountain shape so that each roller 81 is arranged in an arc shape along the circumferential portion of the rail 7. ing.
The conveyor chain 8 is driven by disposing a driving sprocket 6 on the outer side thereof and engaging the driving sprocket 6 with a roller 81.
One screen panel 12 is installed on both ends of a set of link plates 82.

A plurality of cleaning nozzles 2 are installed in the upper part of the screen circulation dust remover so as to face the screen 1 from the outside. By spraying pressurized water from the outside of the screen 1 on the water, the trapped impurities are removed. Unload from screen 1 and drop onto chute 3.
The cleaning nozzle 2 is supplied with cleaning water from a water source. Since the valve device 4 intermittently supplies water to the cleaning nozzle 2, the cleaning nozzle 2 sprays the cleaning water intermittently on the screen 1. .
The cleaning nozzle 2 has a spray area for cleaning one screen panel 12, and when the moving screen panel 12 coincides with the spray position, the cleaning water is sprayed on the screen panel 12 for a predetermined time. .

The valve device 4 includes a water supply valve 41 that intermittently supplies water to the cleaning nozzle 2 by opening and closing, and a cam mechanism 5 that is driven by the circulation device of the screen 1 and opens and closes the water supply valve 41.
As shown in FIGS. 1 to 2, the cam mechanism 5 opens and closes the water supply valve 41 by sliding in and out of the cam 52 that rotates in conjunction with the sprocket 6 via a chain or belt 51. And a sliding pin 53 to be operated.
In this case, the cleaning nozzle 2 is opened and closed by synchronizing the rotation of the sprocket 6 and the rotation of the cam 52 at a predetermined reduction ratio and opening and closing the water supply valve 41 so as to spray when the screen panel 12 comes to the unloading position. The screen 1 is sprayed intermittently to effectively clean the screen 1.

  On the other hand, as shown in FIGS. 3 to 4, the cam mechanism 5 slidably contacts the link arm 54 with the roller 81 arranged in an arc shape on the link plate 82, and the roller 81 passing through the link arm 54. It is also possible to include a cam 55 that swings according to the height of the protrusion, and a sliding pin 53 that abuts the tip of the cam 55 and opens and closes the water supply valve 41 by opening and closing.

As described above, the screen circulation type dust remover of this embodiment uses the operation of the conveyor chain 8 and the rotation of the driving sprocket 6 by the operation of the screen 1, and transmits the movement to the valve body of the water supply valve 41. The cleaning water is sprayed intermittently from the cleaning nozzle 2 by opening and closing the water supply valve 41.
When the screen panel 12 arrives at the spray position of the cleaning nozzle 2, the water supply valve 41 is opened and closed so that the cleaning nozzle 2 sprays synchronously, thereby spraying at the timing necessary for unloading and cleaning the screen 1. In addition, the amount of water used can be kept to a minimum and water can be saved.

  Thus, the screen circulation type dust remover of the present embodiment captures contaminants in water by the circulating screen 1 and sprays pressurized water from the washing nozzle 2 on the water, thereby removing the captured contaminants from the screen 1. In the screen circulation type dust remover loaded and collected in the chute 3, a valve device 4 for intermittently supplying water to the cleaning nozzle 2 and spraying intermittently from the cleaning nozzle 2 is provided. By spraying intermittently at the timing required for unloading and cleaning, the amount of water used can be kept to a minimum and water can be saved.

  In this case, by providing the cam mechanism 5 that is driven by the circulation device of the screen 1 and opens and closes the water supply valve 41 of the valve device 4, the operation and control of the intermittent spray can utilize the movement of the screen 1. And an electric control device are not required.

  In addition, when the screen panel 12 passes through the spray position of the cleaning nozzle 2, the water supply valve 41 is opened and closed so that the cleaning nozzle 2 sprays in synchronization, so that the timing required for unloading and cleaning the screen 1 is reached. By spraying, water consumption can be reduced by minimizing the amount of water used.

  As mentioned above, although the screen circulation type dust remover of the present invention has been described based on the embodiments thereof, the present invention is not limited to the configurations described in the above embodiments, and the configurations described in the embodiments are appropriately combined. The configuration can be changed as appropriate without departing from the spirit of the invention.

  The screen circulation type dust remover of the present invention has a characteristic that the amount of water used is kept to a minimum and water is saved by spraying intermittently at the timing necessary for unloading and cleaning the screen. For this reason, it can be suitably used for dust removal equipment for general industries and foods, including dust removal equipment for sewage treatment and water purification treatment and dust removal equipment for rivers.

It is a front view at the time of washing water spraying showing the 1st example of the screen circulation type dust remover of the present invention. It is a front view at the time of spray stop of the screen circulation type dust remover. It is a perspective view which shows the whole screen circulation type dust remover. It is a front view at the time of washing water spraying which shows a 2nd example of a screen circulation type dust remover of the present invention. It is a front view at the time of spray stop of the screen circulation type dust remover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen 11 Screen plate 12 Screen panel 2 Cleaning nozzle 3 Chute 4 Valve apparatus 41 Water supply valve 5 Cam mechanism 51 Chain or belt 52 Cam 53 Slide pin 54 Link arm 55 Cam 6 Sprocket 7 Rail 8 Conveyor chain 81 Roller 82 Link plate

Claims (3)

  In the screen circulation type dust remover, which captures contaminants in the water with a circulating screen and sprays pressurized water from the washing nozzle on the water to unload the captured contaminants from the screen and collect them in a chute. A screen circulation type dust remover provided with a valve device for intermittently supplying water to the washing nozzle and spraying intermittently from the washing nozzle.   2. The screen circulation type dust remover according to claim 1, further comprising a cam mechanism that is driven by a screen circulation device and opens and closes a water supply valve of the valve device.   3. The screen circulation type dust remover according to claim 1, wherein when the screen panel comes to the spray position of the cleaning nozzle, the water supply valve is opened and closed so that the cleaning nozzle sprays synchronously.

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