TW202026495A

TW202026495A - Screen grid device for crushing machine, controller of screen grid device for crushing machine, and method of operating screen grid device for crushing machine reducing the load of a screen grid device in the treatment of foreign substances in a water channel

Info

Publication number: TW202026495A
Application number: TW108143572A
Authority: TW
Inventors: 萩原有希子
Original assignee: 日商住友重機械環境工程股份有限公司
Priority date: 2019-01-10
Filing date: 2019-11-29
Publication date: 2020-07-16
Also published as: KR20200087071A; CN111420763A; CN111420763B; TWI765196B; JP2020111945A; JP7433763B2

Abstract

This invention aims to provide a screen grid device for a crushing machine, a controller of a screen grid device for a crushing machine, and a method of operating a screen grid device for a crushing machine. The screen grid device for a crushing machine has a function of removing foreign substances on a screen grid device and can reduce the load of the screen grid device in the treatment of foreign substances in a water channel. Accordingly, this invention provides a screen grid device for a crushing machine, a controller of a screen grid device for a crushing machine, and a method of operating a screen grid device for a crushing machine. The screen grid device for a crushing machine includes a screen grid part for transferring the foreign substances in the water channel and a control part for controlling the operation of the screen grid part. The controller performs the following control: when overload is detected in the screen grid part, a reverse rotation operation at an angle equal to or greater than the number of rakes on the rotation surface. As such, the reverse rotation operation is performed for a predetermined angle, and from the point where the overload state is detected, the foreign substances that cause the overload of the screen grid part is removed, and the processing can be performed in a state in which the load on the screen grid device is reduced.

Description

Screen grid device for crusher, control device of screen grid device for crusher, and operation method of screen grid device for crusher

本申請案係主張基於2019年1月10日申請之日本專利申請第2019-002985號的優先權。該日本申請案的全部內容係藉由參閱而援用於本說明書中。本發明係有關一種設置於污水處理場等的水路，並將夾雜物移送至用於破碎漂浮在水中之篩渣等夾雜物之破碎機之篩格柵裝置、篩格柵裝置之控制裝置及篩格柵裝置之運轉方法。更詳細而言，係有關一種由篩格柵構件捕捉漂浮在水中之篩渣等夾雜物，並藉由旋轉刮板部將被篩格柵構件捕捉到之夾雜物刮攏到破碎機之篩格柵裝置、篩格柵裝置之控制裝置及篩格柵裝置之運轉方法。This application claims priority based on Japanese Patent Application No. 2019-002985 filed on January 10, 2019. The entire content of this Japanese application is incorporated in this specification by reference. The present invention relates to a sieve grid device, a control device for the sieve grid device, and a sieve of a crusher used for crushing inclusions such as slags floating in the water. How to operate the grille device. In more detail, it relates to a screen grid member that captures inclusions such as slags floating in the water, and the inclusions captured by the screen grid member are scraped to the sieve grid of the crusher by the rotating scraper part The grid device, the control device of the screen grid device, and the operation method of the screen grid device.

在污水處理場等的水路中設置有用於破碎漂浮在水中之篩渣等夾雜物之附篩格柵之破碎機。設置於水路中之附篩格柵之破碎機除了具備用於破碎夾雜物之破碎機以外，還具備篩格柵裝置，並且能夠將在水路的整個寬度上流動之夾雜物刮攏到破碎部並進行破碎，該篩格柵裝置由用於捕捉夾雜物之篩格柵構件及用於將被篩格柵構件捕捉到之夾雜物刮攏到破碎機之旋轉刮板部所構成。例如，在專利文獻1中記載了一種裝置，該裝置中，將篩格柵裝置和設置於該篩格柵裝置的一側之破碎機以橫跨水路之方式設置，並將水中的夾雜物收集到破碎機。該篩格柵裝置為如下的裝置，亦即由沿垂直方向積層之圓弧狀篩格柵構件及固定有在該圓弧狀篩格柵構件之間進行旋轉之刮板組之垂直方向的刮板軸所構成，並且藉由將該刮板軸設置成與篩格柵的外周緣的中心保持偏心，而使刮板的前端部從篩格柵的外周緣突出和沉入，並將被篩格柵捕捉到之夾雜物刮攏到破碎機之裝置。 (先前技術文獻) (專利文獻) 專利文獻1：日本特開平11-324101號公報A crusher with a sieve grid is installed in the waterway of the sewage treatment plant to crush the inclusions such as slag floating in the water. The crusher with screen grid installed in the waterway is not only equipped with a crusher for crushing inclusions, but also equipped with a screen grid device, and can scrape the inclusions flowing over the entire width of the waterway to the crushing part. For crushing, the screen grid device is composed of a screen grid member for capturing inclusions and a rotating scraper part for scraping the inclusions caught by the screen grid member to the crusher. For example, Patent Document 1 describes a device in which a screen grid device and a crusher installed on one side of the screen grid device are installed across the waterway, and the impurities in the water are collected To the crusher. The screen grid device is a device that is composed of arc-shaped screen grid members stacked in the vertical direction and a vertical scraper group fixed with a scraper group that rotates between the arc-shaped screen grid members. The squeegee shaft is arranged to be eccentric with the center of the outer periphery of the screen grid, so that the front end of the scraper protrudes and sinks from the outer periphery of the screen grid, and will be screened A device that scrapes the inclusions caught by the grid to the crusher. (Prior technical literature) (Patent Document) Patent Document 1: Japanese Patent Application Laid-Open No. 11-324101

(本發明所欲解決之課題) 如專利文獻1所示的附篩格柵之破碎機中，在篩格柵裝置中，若藉由旋轉之刮板來刮攏夾雜物，則有時一部分夾雜物會被捲入到刮板之旋轉中而不會流入破碎機中。又，捲入到刮板之夾雜物將會堆積在篩格柵構件的下游側。又，夾雜物有時還會被夾入篩格柵構件的間隙中。這種夾雜物的堆積或夾入將會對刮板的旋轉帶來負載，因此必須停止附篩格柵之破碎機的運轉，並必須清除造成原因之夾雜物。但是，停止附篩格柵之破碎機的運轉會產生處理效率下降之問題，並且會產生由被處理水中的夾雜物的滯留所引起之處理負載的增加等問題。因此，乃尋求一種在篩格柵裝置中發生夾雜物的堆積或夾入之情況下，無需立即停止附篩格柵之破碎機的運轉，而能夠清除篩格柵裝置上的夾雜物來減少篩格柵裝置的負載，並且可持續進行破碎處理之作法。本發明的課題為提供一種在將夾雜物移送至用來破碎被處理水中的篩渣等夾雜物之破碎機之篩格柵裝置中，具有清除篩格柵裝置上的夾雜物之功能，且能夠減少篩格柵裝置的負載之破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法。 (用以解決課題之手段) 本發明人對上述課題進行深入研究之結果，發現了在將夾雜物移送至破碎機之破碎機用篩格柵裝置中，具備控制篩格柵部的運轉之控制部，在篩格柵部中檢測到過負載時，使篩格柵部在特定的範圍內進行反向旋轉運轉，藉此能夠減少篩格柵部的負載，並可持續進行破碎處理之創見，從而完成了本發明。亦即，本發明為以下所述之破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法。以下，有時還將本發明之破碎機用篩格柵裝置簡稱為篩格柵裝置。用於解決上述課題之本發明的破碎機用篩格柵裝置係用於將夾雜物移送至破碎水路內的夾雜物之破碎機，該破碎機用篩格柵裝置的特徵為，具備：篩格柵部，係用來移送夾雜物；及控制部，係用來控制篩格柵部的運轉，篩格柵部係由用來捕捉夾雜物之篩格柵及設置有用來刮攏由篩格柵捕捉到之夾雜物之刮板之旋轉刮板部所構成，控制部係進行如下的控制：在篩格柵部中檢測到過負載時，篩格柵部係以1圈/(旋轉面上的刮板的個數)的角度以上的量進行反向旋轉運轉。依據該破碎機用篩格柵裝置，係先檢測出具備了篩格柵和旋轉刮板部之篩格柵部的過負載狀態，並以既定的角度量進行旋轉刮板部的反向旋轉運轉，藉此能夠清除造成篩格柵部的過負載的主要原因之夾雜物，並可以減少了篩格柵裝置之負載之狀態來進行處理。又，作為本發明的破碎機用篩格柵裝置的一種實施方式，係具有如下的特徵，控制部係進行如下的控制：在執行前述反向旋轉運轉之後恢復到正向旋轉運轉，在執行既定時間的正向旋轉運轉之後檢測到過負載時再次進行反向旋轉運轉，未檢測到過負載時持續進行正向旋轉運轉。依據該特徵，係藉由依據篩格柵部的過負載狀態，來切換篩格柵部的正向旋轉運轉和反向旋轉運轉，而能夠減少維護的次數、工作量，並能夠使篩格柵裝置穩定地運轉。又，作為本發明的破碎機用篩格柵裝置的一種實施方式，係具有如下特徵：在過負載的檢測次數超過既定次數時，控制部就停止前述篩格柵部的運轉。依據該特徵，在過負載的檢測次數超過既定次數時，就判斷為藉由正向旋轉運轉及反向旋轉運轉都無法消除過負載狀態，乃停止篩格柵部，藉此謀求能夠進行篩格柵裝置的保護及基於別種方法來消除過負載狀態之類的適當的應對。用於解決上述課題之本發明的破碎機用篩格柵裝置之控制裝置，設置於將夾雜物移送至破碎水路內的夾雜物之破碎機之破碎機用篩格柵裝置，該破碎機用篩格柵裝置之控制裝置的特徵為，破碎機用篩格柵裝置具備移送夾雜物之篩格柵部，該篩格柵部由捕捉夾雜物之篩格柵及設置有刮攏由篩格柵捕捉到之夾雜物之刮板之旋轉刮板部構成，控制裝置具備控制篩格柵部的運轉之控制部，控制部進行如下控制，在篩格柵部中檢測到過負載時，篩格柵部以1圈/(旋轉面上的刮板的個數)的角度以上的量進行反向旋轉運轉。依據該特徵，能夠在各種篩格柵裝置中利用如下控制之技術：檢測具備篩格柵和旋轉刮板部之篩格柵部的過負載狀態，並以既定的角度進行旋轉刮板部的反向旋轉運轉，藉此清除造成篩格柵部的過負載的主要原因之夾雜物，並以減少了篩格柵裝置之負載之狀態進行處理。尤其，藉由應用於現有的附篩格柵之破碎機的篩格柵裝置，無需更新整個附篩格柵之破碎機，就能夠藉由簡單的安裝工作，更新為能夠進行減少篩格柵裝置之負載之處理之篩格柵裝置及附篩格柵之破碎機。用於解決上述課題之本發明的破碎機用篩格柵裝置之運轉方法中，該破碎機用篩格柵裝置係用於將夾雜物移送至用來破碎水路內的夾雜物之破碎機，該破碎機用篩格柵裝置之運轉方法的特徵為，破碎機用篩格柵裝置係具備：篩格柵部，係用於移送夾雜物；及控制部，係用於控制篩格柵部的運轉，篩格柵部係由用於捕捉夾雜物之篩格柵及設置有用於刮攏由篩格柵捕捉到之夾雜物之刮板之旋轉刮板部所構成，該運轉方法係具備如下的步驟：在篩格柵部中檢測到過負載時，篩格柵部以1圈/(旋轉面上的刮板的個數)的角度以上的量進行反向旋轉運轉。依據該特徵，係先檢測具備篩格柵和旋轉刮板部之篩格柵部的過負載狀態，並以既定的角度量進行旋轉刮板部的反向旋轉運轉，藉此能夠清除造成篩格柵部的過負載的主要原因之夾雜物，並可以減少了篩格柵裝置之負載之狀態來進行處理。 (發明之效果) 依據本發明，能夠提供一種在用於將夾雜物移送至用於破碎被處理水中的篩渣等夾雜物之破碎機之篩格柵裝置中，具有清除篩格柵裝置上的夾雜物之功能，且能夠減少篩格柵裝置的負載之破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法。(Problem to be solved by the present invention) For example, in the crusher with screen grating shown in Patent Document 1, in the screen grating device, if the rotating scraper is used to scrape the inclusions, some of the inclusions may be caught between the scrapers. Rotating without flowing into the crusher. In addition, the inclusions caught in the scraper will accumulate on the downstream side of the screen grid member. In addition, impurities may be caught in the gaps of the screen grid members. The accumulation or entrapment of such inclusions will bring load to the rotation of the scraper, so the operation of the crusher with the screen grid must be stopped, and the causing inclusions must be removed. However, stopping the operation of the crusher with a screen grid will cause problems such as a decrease in processing efficiency and an increase in processing load caused by the retention of inclusions in the water to be processed. Therefore, it is sought to eliminate the inclusions on the screen grid device to reduce the screen without the need to immediately stop the operation of the crusher with the screen grid when the inclusions are accumulated or caught in the screen grid device. The load of the grid device, and can continue to be crushed. The subject of the present invention is to provide a screen grid device that transfers inclusions to a crusher for crushing inclusions such as slag residue in the water to be treated, which has the function of removing the inclusions on the screen grid device and can The operation method of the screen grid device for crusher, the control device of the screen grid device for the crusher, and the operation method of the screen grid device for the crusher to reduce the load of the screen grid device. (Means to solve the problem) As a result of intensive research on the above-mentioned problems, the inventors have found that in the screen grid device for crushers that transfers inclusions to the crusher, a control unit that controls the operation of the screen grid is provided. When the overload is detected, the screen grid portion is rotated in a specific range, thereby reducing the load on the screen grid portion, and the original idea of continuous crushing treatment, thus completing the present invention. That is, the present invention is the operation method of the screen grid device for the crusher, the control device of the screen grid device for the crusher, and the operation method of the screen grid device for the crusher described below. Hereinafter, the screen grid device for a crusher of the present invention may also be simply referred to as a screen grid device. The screen grid device for a crusher of the present invention to solve the above-mentioned problems is a crusher for transporting inclusions to the inclusions in the crushing waterway. The screen grid device for a crusher is characterized by having: a screen grid The grid part is used to transfer the inclusions; and the control part is used to control the operation of the screen grid part. The screen grid part is a screen grid used to capture the inclusions and is provided with a sieve grid used to scrape the sieve grid It is composed of the rotating scraper part of the scraper that catches the inclusions. The control part performs the following control: When an overload is detected in the screen grid part, the screen grid part is set at 1 circle/(on the rotating surface The number of scrapers) is greater than or equal to the angle of reverse rotation. According to the screen grid device for crushers, the overload condition of the screen grid portion equipped with the screen grid and the rotating scraper portion is first detected, and the reverse rotation operation of the rotating scraper portion is performed at a predetermined angle. By this, it is possible to remove the inclusions that are the main cause of the overload of the screen grid portion, and to reduce the load of the screen grid device for processing. In addition, as an embodiment of the screen grid device for a crusher of the present invention, it has the following feature. The control unit performs the following control: after performing the above-mentioned reverse rotation operation, it returns to the forward rotation operation, and after executing the predetermined After the time of forward rotation operation, when overload is detected, the reverse rotation operation is performed again, and the forward rotation operation is continued when the overload is not detected. According to this feature, by switching the forward rotation operation and reverse rotation operation of the screen grid portion according to the overload state of the screen grid portion, the number of maintenance and workload can be reduced, and the screen grid can be The device operates stably. In addition, as an embodiment of the screen grid device for a crusher of the present invention, it has a feature that when the number of detections of overload exceeds a predetermined number, the control unit stops the operation of the screen grid portion. According to this feature, when the number of detections of overload exceeds the predetermined number, it is determined that the overload state cannot be eliminated by both the forward rotation operation and the reverse rotation operation, and the screen grid portion is stopped to achieve screening. The protection of the grid device and the appropriate response based on other methods to eliminate the overload condition. The control device of the sieve grid device for a crusher of the present invention to solve the above-mentioned problems is provided in the sieve grid device for the crusher of the crusher that transfers the inclusions to the inclusions in the crushing waterway, and the sieve for the crusher The control device of the grid device is characterized in that the sieve grid device for the crusher is equipped with a sieve grid portion for transporting inclusions. The sieve grid portion is provided with a sieve grid for capturing inclusions and a sieve grid provided for scraping and capturing The rotating scraper part of the scraper for the inclusions is constituted. The control device is equipped with a control part that controls the operation of the screen grid part. The control part performs the following control. When an overload is detected in the screen grid part, the screen grid part The reverse rotation operation is performed at an angle of 1 revolution/(the number of scrapers on the rotating surface) or more. According to this feature, the following control technology can be used in various screen grid devices: detecting the overload state of the screen grid portion with the screen grid and the rotating scraper portion, and performing the reverse of the rotating scraper portion at a predetermined angle Rotate to remove the inclusions that are the main cause of the overload of the screen grid part, and deal with it in a state where the load of the screen grid device is reduced. In particular, by applying the screen grid device to the existing screen grid crusher, it is not necessary to update the entire screen grid crusher, and can be updated to reduce the screen grid device through simple installation work Screen grid device for processing load and crusher with screen grid. In the operating method of the screen grid device for a crusher of the present invention for solving the above-mentioned problems, the screen grid device for a crusher is used to transfer inclusions to a crusher for crushing inclusions in a waterway. The operating method of the screen grid device for crusher is characterized in that the screen grid device for crusher is provided with: a screen grid portion for transferring inclusions; and a control portion for controlling the operation of the screen grid portion The screen grid part is composed of a screen grid for catching inclusions and a rotating scraper part provided with a scraper for scraping up the inclusions caught by the screen grid. The operation method has the following steps : When an overload is detected in the screen grid part, the screen grid part performs reverse rotation operation at an angle of 1 revolution/(the number of scrapers on the rotating surface) or more. According to this feature, the overload state of the screen grid portion with the screen grid and the rotating scraper portion is detected first, and the reverse rotation of the rotating scraper portion is performed at a predetermined angle, thereby eliminating the screen grid. The main reason for the overload of the grid is the inclusions, and the state of the load of the screen grid device can be reduced for treatment. (Effect of Invention) According to the present invention, it is possible to provide a screen grating device for transporting inclusions to a crusher for crushing inclusions such as slag residue in the water to be treated, which has the function of removing the inclusions on the screen grating device, And it can reduce the load of the screen grid device, the control device of the screen grid device for the crusher, and the operation method of the screen grid device for the crusher.

以下，參閱圖式，對本發明之破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法的實施方式進行詳細說明。又，係以本發明之破碎機用篩格柵裝置之運轉方法的說明，來取代本發明之破碎機用篩格柵裝置的運轉控制之說明。另外，關於實施方式中所記載之破碎機用篩格柵裝置及破碎機用篩格柵裝置之控制裝置，僅僅係為了說明本發明之破碎機用篩格柵裝置及破碎機用篩格柵裝置之控制裝置而舉出的例子而已，並不限定於此。又，關於實施方式中所記載之破碎機用篩格柵裝置之運轉方法，僅僅係為了說明本發明之破碎機用篩格柵裝置及使用了破碎機用篩格柵裝置之控制裝置之破碎機用篩格柵裝置之運轉方法而舉出的例子而已，並不限定於此。本發明的破碎機用篩格柵裝置係與破碎機一起設置於水路中，並且用於處理流過水路之被處理水中的夾雜物。例如，作為水路，係可舉出污水處理場等的沉砂池等，作為夾雜物，係可舉出污水等廢水中所含之篩渣等。另外，關於實施方式中所記載之水路的結構，僅僅係為了說明本發明之破碎機用篩格柵裝置及具備破碎機用篩格柵裝置之附篩格柵之破碎機而舉出的例子而已，並不限定於此。〔第1實施方式〕 (附篩格柵之破碎機) 圖1係表示具備本發明的第1實施方式中的破碎機用篩格柵裝置之附篩格柵之破碎機的結構之概略說明圖。本發明的第1實施方式的附篩格柵之破碎機100為用於對流過水路R之被處理水中所含之夾雜物G進行破碎處理。本實施方式的附篩格柵之破碎機100係具備：破碎機1，係用於破碎流過水路R之被處理水中所含之夾雜物G；及篩格柵裝置2A，係用於將夾雜物G移送至破碎機1。破碎機1係配置於篩格柵裝置2A的一側。又，破碎機1及篩格柵裝置2A係以橫跨水路R之方式相互靠近地設置。破碎機1為用於破碎流過水路R之被處理水中的夾雜物G。又，破碎機1只要配置成從篩格柵裝置2A來供給夾雜物G即可，例如，可舉出如圖1所示之配置於篩格柵裝置2A與水路R的側壁R2之間的例子。而且，作為本實施方式的破碎機1，可以為任何形式的破碎機，係可舉出垂直型雙軸破碎機、水平型破碎機等。作為本實施方式的破碎機1，雖然是舉出了垂直型破碎機的例子，但是並不限定於此。另外，在本實施方式中所舉例之垂直型破碎機，係具有能夠沿著篩格柵裝置2A的高度方向均勻地設置破碎機1之優點。如圖1所示，破碎機1中，在正面(圖式上側)形成有用於導入被處理水之導入口11，且在後表面形成有用於排出被處理水之排出口12。又，破碎機1中，係將2個旋轉破碎刀13a、13b可旋轉自如地支承在沿著上下方向(紙面垂直方向)延伸之軸的外周，並且將該兩個刀片彼此以相互嚙合之方式並設在水路R內的寬度方向上。又，破碎機1係在其上部具備對旋轉破碎刀13a、13b進行旋轉驅動之驅動部(未圖示)。另外，作為本實施方式的驅動部，係具備直立式電動機。又，破碎機1係被驅動部(直立式電動機)所驅動，藉此旋轉破碎刀13a、13b係朝向捲入夾雜物G之方向進行旋轉，從導入口11導入被處理水並將被處理水中的夾雜物G及從篩格柵裝置2A移送過來之夾雜物G咬入旋轉破碎刀13a、13b之間來進行破碎，並從排出口12排放到下游側。另外，如圖1所示，本實施方式的破碎機1中，驅動部係以既定的輸出進行驅動，將旋轉破碎刀13a朝向順時針方向進行旋轉，且將旋轉破碎刀13b朝向逆時針方向進行旋轉，藉此將夾雜物G予以破碎。篩格柵裝置2A為用於將夾雜物G移送至破碎機1。篩格柵裝置2A係設置於破碎機1的上游側，用於捕捉被處理水中的夾雜物G，並將夾雜物G刮攏到破碎機1。藉此，能夠將夾雜物G確實地供給至破碎機1，而可提高附篩格柵之破碎機100的破碎效率。以下，對篩格柵裝置2A進行詳細說明。 (篩格柵裝置) 圖2係表示本發明的第1實施方式中的破碎機用篩格柵裝置的結構之概略說明圖。另外，單點鏈線的箭頭係表示以能夠控制之方式連接在一起的部分。本實施方式的篩格柵裝置2A係具備：篩格柵部3，係用於移送夾雜物G；及控制部4，係用於控制篩格柵部的運轉。又，篩格柵部3係具備：篩格柵5，係用於捕捉夾雜物G；及旋轉刮板部6，係用於將被篩格柵5捕捉到之夾雜物G刮攏到破碎機1。篩格柵5係由沿著大致垂直方向積層之複數個篩格柵構件所構成，且各篩格柵構件係分開設置。從篩格柵5的上游流過來之被處理水通過篩格柵構件之間的間隙，大於該篩格柵構件之間的間隙的夾雜物G係在篩格柵5的上游側被捕捉。另外，構成篩格柵5之構件可以為任何形式的構件，例如，可以由沿大致水平方向形成有複數個狹縫之板構件等所構成。篩格柵5中，另一側(與破碎機1相反的一側)的端部係固定於水路R的側壁R1，且一側(破碎機1側)延伸設置至水路R的大致中央並形成有從水路R的大致中央朝向下游側以圓弧狀進行彎曲而成的圓弧部。又，篩格柵5的一側係固定於破碎機1的水路中央側的殼體側表面。另外，就夾雜物G的捕捉及移送效率的觀點而言，篩格柵5的形狀具有圓弧部為較佳，但是並不限定於此。例如，亦可以為具有從水路R的大致中央朝向下游側以折線形成之弧狀部者。如前所述，在篩格柵5的一側(破碎機1側)形成有圓弧部，該圓弧部延伸設置至前述破碎機1的上游區域。藉此，能夠將被篩格柵5捕捉到之夾雜物G適當地引導至破碎機1的刀片嚙合之位置。旋轉刮板部6係由旋轉軸63、固定於旋轉軸63之複數個刮板61及對旋轉軸63進行旋轉驅動之驅動部64所構成。刮板61為具有能夠通過所積層之篩格柵構件的間隙之厚度之平板，並在旋轉刮板部6中沿著高度方向並設有與形成於篩格柵5之間隙相同數量的刮板61。又，將藉由驅動部64來使刮板61朝向將夾雜物G移送至破碎機1側之方向進行旋轉之情形稱為旋轉刮板部6的正向旋轉運轉，尤其，係將刮板61的轉速在既定的範圍內之情形稱為正常運轉。旋轉刮板部6的刮板61為用於刮攏夾雜物G。作為刮板61的材質，係以由橡膠、板簧等彈性體所形成者為較佳，由硬質橡膠所形成者為特佳。藉此，在夾有木材等硬質的夾雜物G之情況下，刮板61將會發生彈性變形，因此能夠抑制刮板61的破損。又，關於刮板61的形狀，只要係能夠刮攏夾雜物G的形狀即可，並無特別限定。例如，可舉出如圖1所示之刮板61的前端部係具有：相對於正向旋轉運轉時的刮板61的旋轉方向的正面側的端部的半徑方向的長度係較長於相反的一側的背面側的端部的半徑方向的長度的傾斜面62。藉此，夾雜物G就不會纏繞在刮板的前端部，而能夠有效地被移送。旋轉刮板部6的旋轉軸63係固定有複數個刮板61，且設置成與篩格柵5的圓弧部的中心保持偏心。若藉由驅動部64對旋轉軸63進行旋轉驅動，且刮板61以旋轉軸63為中心進行繞轉，則刮板61將會從篩格柵構件之間突出。又，在刮板61從篩格柵5的外周面突出的期間，將會刮攏被篩格柵5捕捉到之夾雜物G，並使其流入到破碎機1。關於刮板61之相對於旋轉軸63的固定位置，只要係配置成沿著高度方向並設有與形成於篩格柵5之間隙相同數量的刮板61即可，並無特別限定。例如，係可舉出將所有刮板61相對於旋轉軸63配置成一列的配置方式。藉此，旋轉刮板部6的設計、組裝變得容易。又，可舉出相對於旋轉軸63錯開刮板61的角度來進行固定，並配置成放射狀或螺旋狀的配置方式。藉此，能夠使移送至破碎機1之夾雜物G的量分散，可抑制在破碎機1上同時地處理大量的夾雜物G，並可抑制破碎機1中的夾雜物G的被咬死住。此時，可以將複數個刮板61設成一個刮板組，並按每一個刮板組錯開角度來進行固定。藉此，能夠減少夾雜物G的刮攏動力。旋轉刮板部6的驅動部64係用於對旋轉軸63進行旋轉驅動。又，除了朝向將夾雜物G移送至破碎機1側之方向進行旋轉之正向旋轉運轉以外，驅動部64還具備進行朝向與正向旋轉運轉相反的方向進行旋轉之反向旋轉運轉之功能。另外，關於驅動部64，只要係能夠對旋轉軸63進行旋轉驅動即可，並無特別限定。例如可舉出，與破碎機1的驅動部同樣地使用直立式電動機的例子。又，旋轉刮板部6的驅動部64係以刮板61的前端的轉速較之破碎機1的旋轉破碎刀13a、13b的外周的轉速更慢之方式進行驅動。例如，使刮板61的前端的轉速係為破碎機1的旋轉破碎刀13a、13b的外周的轉速的70%以下為較佳。藉此，可容易將由刮板61刮攏到之夾雜物G引入到破碎機1，並能夠將夾雜物G更有效且確實地移送至破碎機1。另外，關於本發明的旋轉刮板部6，係只要能夠將被篩格柵5捕捉到之夾雜物G刮攏到破碎機1即可，可以為任何結構，並且能夠依據篩格柵5的形狀來做適當地設計。例如，除了如第1實施方式的旋轉刮板部6所示般地，包括了旋轉軸63和刮板61之結構以外，還可舉出如後述的第3實施方式的循環繞轉刮板部8所示般地，具備了安裝有刮板之鏈條及可供鏈條循環繞轉之複數個鏈輪之結構等。如第1實施方式的旋轉刮板部6所示般地，由旋轉軸63和從旋轉軸63以放射狀安裝之刮板61所構成之旋轉刮板部6沒有如鏈條與鏈輪那樣地進行嚙合之結構，而為簡單的結構物，因此具有不易發生夾雜物纏繞在旋轉刮板部6等的故障之優點。如前所述，藉由利用驅動部64來使旋轉刮板部6進行旋轉運轉，能夠將被篩格柵5捕捉到之夾雜物G刮攏到破碎機1，並藉由破碎機1對夾雜物G進行破碎處理。 (控制部(破碎機用篩格柵裝置之控制裝置)) 控制部4係用於控制篩格柵部3的運轉。又，控制部4係用於控制篩格柵裝置2A單體的運轉，並且為獨立於破碎機1的運轉控制而進行控制篩格柵裝置2A單體的運轉。控制部4可以藉由配線等與篩格柵部3直接連接，亦可以經由無線等通訊技術間接地連接。本實施方式的控制部4係具備：判斷部41，係用於判斷篩格柵部3的運轉狀態；及篩格柵部運轉控制部42，係用於控制篩格柵部3的運轉狀態。判斷部41係用於判斷篩格柵部3的運轉狀態，並將該判斷結果作為控制篩格柵部3的運轉的基準。篩格柵部3的運轉狀態係指：由於篩格柵5中的夾雜物G的堆積或夾入而導致旋轉刮板部6是否處於過負載狀態。判斷部41之用於判斷篩格柵部3的運轉狀態的方法，並無特別限定。例如，可舉出用於檢測篩格柵5夾有夾雜物G等之異物的方法、用於檢測旋轉刮板部6的驅動部64的輸出增加的方法等。具體而言，可舉出設置了用於檢測旋轉刮板部6的驅動部64的電流值之機構，並依據電流值的變化來判斷篩格柵部3的運轉狀態。由於可以在短時間(1秒以下)內就檢測出電流值，因此能夠瞬間就判斷旋轉刮板部6的過負載狀態。又，判斷部41可以具備：接收針對附篩格柵之破碎機100或篩格柵部3的來自外部的運轉命令之功能，並依據來自外部的運轉命令的內容來進行篩格柵部3的運轉狀態之判斷。篩格柵部運轉控制部42係用於控制篩格柵部3的運轉狀態。另外，篩格柵部3的運轉狀態的控制，係指：旋轉刮板部6的驅動/停止、減速/加速、旋轉方向的控制。用於控制篩格柵部3的運轉狀態的方法，並無特別限定。例如，可舉出藉由導通和斷開的開關機構、反相器等，來控制旋轉刮板部6的驅動部64的輸出的方法。另外，關於控制部4之結構，係能夠獨立地設置成作為本發明之控制裝置。該控制裝置係能夠應用於現有的附篩格柵之破碎機中的篩格柵裝置。藉此，無需更新篩格柵裝置，只要藉由簡單的安裝工作，即可提供：本發明的破碎機用篩格柵裝置及破碎機用篩格柵裝置之運轉方法。 (破碎機用篩格柵裝置的運轉控制) 本發明的破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法，係進行與篩格柵部3的運轉狀態相對應之運轉控制。以下，作為本發明之實施方式，係例舉出與篩格柵部3的運轉狀態相對應之適合的運轉控制來進行說明。另外，關於各運轉控制中的說明及流程圖，僅僅係實施方式的例子而已，並不限定於此。首先，參閱圖2～圖4，對在篩格柵部3的運轉狀態下，檢測到過負載時的運轉控制進行說明。圖2及圖3中的(Ａ)係顯示篩格柵裝置2A的反向旋轉運轉時的動作之開始進行反向旋轉運轉時，圖2及圖3中的(B)係顯示藉由反向旋轉運轉來去除夾雜物時。另外，圖2及圖3中，旋轉刮板部6中的刮板61的配置並不相同。又，圖4中係顯示出本運轉控制之流程圖。在開始篩格柵裝置2A的運轉，並進行正常運轉之期間，藉由控制部4的判斷部41，若將旋轉刮板部6中的驅動部64的輸出判斷為已經超過作為正常運轉而設定之設定值，並處於過負載狀態之情況下，就藉由控制部4的篩格柵部運轉控制部42，進行使旋轉刮板部6的刮板61的旋轉方向改成反轉之反向旋轉運轉。又，此時，破碎機1還是持續地運轉。又，如圖2及圖3所示，以判斷出處於過負載狀態之時點T1為基準，進行旋轉刮板部6的反向旋轉運轉，在圖2及圖3中使刮板61進行逆時針方向旋轉。另外，圖2及圖3中，由鏈線來表示時點T1時的刮板61的位置。此時，為了清除造成過負載的主要原因之夾雜物G，乃謀求驅動旋轉刮板部6，利用刮板61從與正向旋轉運轉時相反的方向來與夾雜物G進行接觸。例如，在圖2中顯示出了如下情形：在旋轉刮板部6中，係將刮板61a～61d按篩格柵5的每一間隙分別錯開90度的角度來固定在旋轉軸63。如圖2(A)所示，由夾雜物G對刮板61a施加負載，藉由判斷部41檢測到過負載狀態時，就以該時點T1為基準而開始進行反向旋轉運轉。又，如圖2(B)所示，藉由使刮板61a旋轉1圈(360度)以上，就能夠去除夾雜物G。另一方面，在圖3中示出了如下情形：在旋轉刮板部6中，係將刮板61a和61c在同一平面上錯開180度的角度來固定在旋轉軸63，將刮板61b和61d在同一平面上錯開180度的角度來固定在旋轉軸63，並且將刮板61a、61c和刮板61b、61d分別錯開90度的角度來固定在旋轉軸63。如圖3(A)所示，由夾雜物G對刮板61a施加負載，藉由判斷部41檢測到過負載狀態時，就以該時點T1為基準而開始進行反向旋轉運轉。又，如圖3(B)所示，藉由使刮板61a旋轉半圈(180度)以上的話，就能夠利用處於同一平面上之刮板61c去除夾雜物G。如圖2及圖3所示，在旋轉刮板部6的旋轉面A中的刮板61的個數、亦即通過形成於篩格柵5之1個間隙之刮板61的個數為1個之情況下，藉由使刮板61旋轉1圈(360度)以上的話，就能夠清除夾雜物G。又，在旋轉刮板部6的旋轉面上的刮板61的個數、亦即通過形成於篩格柵5之1個間隙之刮板61的個數為2個之情況下，藉由使刮板61旋轉半圈(180度)以上的話，就能夠清除夾雜物G。因此，關於旋轉刮板部6的反向旋轉運轉，藉由進行1圈/(旋轉面上的刮板的個數)的角度以上的旋轉量，就能夠清除造成過負載的主要原因之夾雜物G。又，關於旋轉刮板部6的反向旋轉運轉，只要係進行至少1圈/(旋轉面上的刮板的個數)的角度以上的旋轉量即可，對於上限並無特別限定。另外，關於旋轉刮板部6的結構為安裝於各旋轉面上之刮板61的個數不同之情況下，為了確實地清除夾雜物G，係利用旋轉面上的刮板61的個數的最小值來計算出反向旋轉運轉的角度為佳。又，在判斷部41中，也可以具備用於掌握堆積在篩格柵5之夾雜物G的位置之功能，並利用造成過負載的主要原因之夾雜物G位置處的旋轉面上的刮板61的個數來計算出反向旋轉運轉的角度。藉此，能夠只要利用所需的最小限度量的反向旋轉運轉，即可消除篩格柵部3的過負載狀態。如圖4所示，作為篩格柵部3的反向旋轉運轉，係進行旋轉刮板部6的反向旋轉運轉，完成了既定角度以上的反向旋轉運轉之後恢復到正向旋轉運轉，並執行既定時間的正向旋轉運轉。又，在經過既定時間之後，再次藉由判斷部41執行判斷篩格柵部3的運轉狀態，若判斷為篩格柵部3的過負載狀態已消除之情況下，就藉由篩格柵部運轉控制部42持續進行篩格柵部3的正向旋轉運轉。另一方面，若藉由判斷部41判斷為篩格柵部3的過負載狀態尚未消除之情況下，就藉由篩格柵部運轉控制部42再次執行篩格柵部3的反向旋轉運轉。重複進行該操作。又，如圖4所示，若藉由判斷部41係判斷為處於過負載狀態之情況下，就啟動設置於判斷部41之計數器。又，進行判斷被判斷為處於過負載狀態之次數是否在既定次數(n次(n為任意數))以上。此時，若是n次以內之情況下，就恢復到篩格柵裝置2A的正常運轉。另一方面，若是n次以上之情況下，就判斷為不易藉由反向旋轉運轉來消除過負載狀態，並停止篩格柵部3的運轉。藉此，若是過負載的檢測次數係在既定次數以內之情況下，就能夠謀求既可消除篩格柵部3的過負載狀態和持續進行破碎處理，又可避免立即停止附篩格柵之破碎機100的運轉。又，若是過負載的檢測次數超過既定次數之情況下，就保護篩格柵裝置2之觀點而言，必須停止篩格柵部的運轉。另外，在停止篩格柵部3的運轉之後，可以嘗試藉由另一方法來消除篩格柵部3的過負載狀態。又，亦可以在藉由判斷部41判斷為處於過負載狀態的次數為第一次之情況下，啟動計時器，即使在尚未經過重新設定時間之期間內，就再次被判斷為過負載狀態之情況下，停止篩格柵部3的運轉。藉此，能夠儘早察覺到篩格柵裝置2的不良情形，並進行適當的應對。另外，在經過了重新設定時間之情況下，係將計數器及計時器進行重新設定。如前所述，在篩格柵部3的運轉狀態成為過負載狀態之情形下，藉由以1圈/(旋轉面上的刮板的個數)的角度以上的量進行篩格柵部3的旋轉刮板部6的反向旋轉運轉，能夠清除造成過負載的主要原因之夾雜物G。又，在經過一定時間之後，進行判斷篩格柵部3的運轉狀態，在篩格柵部3的過負載狀態已消除之情況下，能夠使篩格柵部3的運轉恢復到正常運轉並持續進行破碎處理。另一方面，在篩格柵部3的過負載狀態尚未消除之情況下，再次進行反向旋轉運轉。而且，在檢測到既定次數以上的過負載狀態時，能夠藉由停止篩格柵部3的運轉來進行適當的應對。又，藉由獨立地控制篩格柵裝置2A的運轉，破碎機1的運轉能夠持續進行，而能夠不降低作為附篩格柵之破碎機100的處理效率地持續進行夾雜物G的破碎處理。關於上述的運轉控制，可以為作為控制程式而由控制部4全部都自動執行，亦可以包括工作人員的手動操作。另外，就減少工作人員的勞力之觀點而言，設成基於控制程式的自動控制為更佳。藉此，能夠大幅減少維護之次數及時間。〔第2實施方式〕圖5係表示本發明的第2實施方式的破碎機用篩格柵裝置的結構之概略說明圖。第2實施方式的破碎機用篩格柵裝置2B中，係將第1實施方式的破碎機用篩格柵裝置2A的刮板61替換為具備第1傾斜面66a及第2傾斜面66b之刮板65。另外，關於本實施方式中的破碎機用篩格柵裝置2B的結構中與第1實施方式的破碎機用篩格柵裝置2A的結構相同的部分，都省略其說明。在使旋轉刮板部6進行反向旋轉運轉時，當刮板65容納在篩格柵5的內部時，有時候卡勾在刮板65上的夾雜物G將會被一起帶進到篩格柵部3的內部。因此，如圖5所示，將刮板65的形狀設為在反向旋轉運轉時的正面部(正向旋轉運轉時的背面)係具備：與篩格柵5的外周面以銳角交叉之第1傾斜面66a及第2傾斜面66b為較佳。亦即，當進行反向旋轉運轉之刮板65從篩格柵5的外周面突出時，傾斜面66a、66b係形成為朝向行進方向後方傾斜之狀態。當刮板65容納在篩格柵部3的內部時，夾雜物G容易卡在前端，並且將夾雜物G帶進到篩格柵部3的內部的作用較強。因此，雖然是將傾斜面66a、66b的傾斜角作成小一點為較佳，但是另一方面，刮取夾雜物G之作用亦會變小。因此，最好是將刮板65的前端之第1傾斜面66a的傾斜角設成小一點，並且與第1傾斜面66a相鄰形成之第2傾斜面66b的傾斜角設成大於第1傾斜面的傾斜角。藉此，在第1傾斜面66a中，能夠抑制夾雜物G被卡勾住，在第2傾斜面66b中，能夠提高刮取夾雜物G之性能。圖6為本實施方式的破碎機用篩格柵裝置2B的放大圖。參閱圖6，對傾斜面66a、66b進行詳細說明。如圖6所示，刮板65具有相對於篩格柵部3的外周面的傾斜角不同的第1傾斜面66a和第2傾斜面66b。另外，本發明中，在篩格柵部3的外周面呈彎曲之情況下，篩格柵部3的外周面與傾斜面所形成之角度(傾斜角)係指篩格柵部3的切線T與傾斜面所形成之角度。第1傾斜面66a的傾斜角(α)並無特別限定，但是以1～60°為較佳，3～50°為特佳。在小於1°之情況下，由於第1傾斜面66a與第2傾斜面66b形成之角度(γ)變小，因此夾雜物G容易卡勾在第1傾斜面66a與第2傾斜面66b所形成的角中，在超過60°之情形下，由於傾斜角變大，因此夾雜物G容易卡勾在刮板65的前端。第2傾斜面66b的傾斜角(β)並無特別限定，但是以20～89°為較佳，30～70°為特佳。在小於20°之情況下，刮取夾雜物G之作用小，有時候將會無法清除夾雜物G。另一方面，在超過89°之情況下，將夾雜物G一起帶進到篩格柵部2的內部之作用提高，夾雜物G有可能會流入到篩格柵部3的內部。又，第1傾斜面66a與第2傾斜面66b所形成之角度(γ)並無特別限定，但是以95～175°為較佳，110～165°為特佳。在小於95°之情況下，夾雜物G容易卡勾在第1傾斜面66a與第2傾斜面66b所形成之角中，在超過175°之情況下，由於第1傾斜面66a和第2傾斜面66b之各傾斜面係成為大致相同的傾斜角，因此設置第1傾斜面66a和第2傾斜面66b的效果將會變小。另外，本發明中，在旋轉刮板部6的刮板65中亦可以設置3個以上的傾斜面。若鑑於刮取夾雜物G並移送至篩格柵5的上游側之作用、防止將夾雜物G帶進到篩格柵部3的內部之作用等之考量，則是以設置具有不同的傾斜角之2個以上的傾斜面為較佳。而且，刮板65的傾斜面66a、66b係以形成於反向旋轉運轉時的刮板65的正面部中從篩格柵部3的外周面突出之整個區域上為較佳。藉此，可進一步防止將夾雜物G帶進到篩格柵部3的內部。另外，本實施方式的破碎機用篩格柵裝置2B中，係進行與第1實施方式相同的運轉控制。本發明之破碎機用篩格柵裝置中，關於篩格柵部的結構、應用於附篩格柵之破碎機時的設置，只要係成為能夠捕捉及移送水路中的夾雜物之結構及配置即可，並無特別限定。例如，在圖7及圖8中係顯示出本發明之附篩格柵之破碎機的其他方式。〔第3實施方式〕圖7係表示本發明的第3實施方式的破碎機用篩格柵裝置的結構之概略說明圖。將第3實施方式的破碎機用篩格柵裝置2C設成具備如下所述之作為篩格柵部30的結構：篩格柵7，係具有向下游方向傾斜而設置之較長的直線部和彎曲之圓弧部；以及循環繞轉刮板部8，係具有安裝有刮板83之鏈條82、用於驅動鏈條82之2個鏈輪81a、81b及驅動部84。另外，關於本實施方式中的破碎機用篩格柵裝置2C的結構中與第1實施方式的破碎機用篩格柵裝置2A的結構相同的部分，都省略其說明。如第3實施方式所示般地，關於具備了使用鏈條和複數個鏈輪之循環繞轉刮板部8之篩格柵裝置2C來作為篩格柵部30的附篩格柵之破碎機100，無論水路R的寬度的大小如何均能夠設置。因此，係適於設置在寬度大的水路R中之情況之破碎機用篩格柵裝置。關於第3實施方式的篩格柵裝置2C之運轉控制，係能夠進行與第1實施方式相同的運轉控制。〔第4實施方式〕圖8係表示本發明的第4實施方式的破碎機用篩格柵裝置的結構之概略說明圖。第4實施方式的破碎機用篩格柵裝置2D為設置於破碎機1和一個殼體9的內部之結構。又，在該殼體9中係具備凹狀嵌合片來作為能夠簡單地設置於水路R中之嵌合機構91。另外，圖8中，係顯示出了與第1實施方式中的篩格柵裝置2A相同的結構來作為第4實施方式中的篩格柵部3，但是並不限定於此。例如，亦可以設成與第2實施方式中的篩格柵部3之結構相同。又，關於圖8所示之本實施方式中的破碎機用篩格柵裝置2D的結構中與第1實施方式的破碎機用篩格柵裝置2A的結構相同的部分，都省略其說明。如第4實施方式所示般地，關於在設置有嵌合機構91之殼體9內配置之篩格柵裝置2D，係藉由凹狀嵌合片與設置於水路R的側壁之凸狀嵌合片進行嵌合，能夠作為附篩格柵之破碎機100而可簡單地設置於水路R中。關於第4實施方式的篩格柵裝置2D之運轉控制，能夠進行與第1實施方式相同的運轉控制。另外，上述的實施方式只是顯示出破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法的一例。關於本發明之破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法，並不限於上述的實施方式，可以在不變更技術方案中所記載之宗旨的範圍內，對上述的實施方式之破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法進行改變。例如，在本實施方式的破碎機用篩格柵裝置中，亦可以設置用於形成篩格柵部中的被處理水的流動之結構。例如，可舉出在水路的側壁設置傾斜面的結構。藉此，能夠相對於篩格柵部形成被處理水的流動，並且防止夾雜物堆積在水路的側壁側的底部。又，可舉出在刮板上設置水流引導板，並與旋轉軸一起進行旋轉的結構。藉此，能夠從旋轉刮板部朝向篩格柵側形成水流，並且被篩格柵捕捉到之夾雜物可以很容易從篩格柵的外周緣剝離。藉由設置上述的結構，能夠將由篩格柵裝置捕捉到之夾雜物有效地移送至破碎機，並進一步確實地進行夾雜物之破碎處理。又，例如，在本實施方式的破碎機用篩格柵裝置中，亦可以設置複數個篩格柵部。又，在設置複數個篩格柵部之情況下，每一個篩格柵部都能夠獨立地運轉為較佳。藉此，能夠使篩格柵部彼此隔著時間差來進行運轉，而使夾雜物分散並將其移送至破碎機，能夠減少破碎機的負載。又，例如，關於本實施方式的破碎機用篩格柵裝置的運轉控制，係可獨立於破碎機的運轉控制而進行，但是亦可以進行以破碎機的運轉狀態作為基準之篩格柵裝置的運轉控制。藉此，在破碎機的運轉狀態中存在異常時，還能夠藉由進行篩格柵裝置的運轉控制來進行應對。 [產業上之可利用性] 本發明的破碎機用篩格柵裝置、破碎機用篩格柵裝置之控制裝置及破碎機用篩格柵裝置之運轉方法能夠用於處理流過水路之被處理水中的夾雜物。具體而言，在污水處理場的沉砂池中，能夠用於捕捉、破碎篩渣等夾雜物。又，關於本發明的破碎機用篩格柵裝置之控制裝置，只要藉由設置於現有的附篩格柵之破碎機之篩格柵裝置中，無需更新整個裝置，就能夠藉由簡單的安裝工作來提供本發明的破碎機用篩格柵裝置。Hereinafter, referring to the drawings, the embodiments of the screen grid device for crusher, the control device of the screen grid device for crusher, and the operation method of the screen grid device for crusher of the present invention will be described in detail. In addition, the description of the operation method of the screen grid device for crusher of the present invention is used to replace the description of the operation control of the screen grid device for crusher of the present invention. In addition, the screen grid device for a crusher and the control device of the screen grid device for a crusher described in the embodiment are only for explaining the screen grid device for a crusher and the screen grid device for a crusher of the present invention The control device is just an example and is not limited to this. In addition, the operating method of the screen grid device for a crusher described in the embodiment is only for explaining the screen grid device for a crusher of the present invention and a crusher using the control device of the screen grid device for a crusher It is just an example given by the operating method of the screen grid device, and it is not limited to this. The screen grid device for the crusher of the present invention is installed in the waterway together with the crusher, and is used to treat the inclusions in the treated water flowing through the waterway. For example, as the waterway, a grit tank in a sewage treatment plant or the like can be mentioned, and as the inclusions, a sieve contained in waste water such as sewage and the like can be mentioned. In addition, the structure of the waterway described in the embodiment is merely an example for explaining the screen grid device for crusher of the present invention and the crusher with screen grid provided with the screen grid device for crusher. , Is not limited to this. [First Embodiment] (Crusher with screen grid) Fig. 1 is a schematic explanatory diagram showing the structure of a crusher with a screen grid provided with a screen grid device for a crusher in a first embodiment of the present invention. The crusher 100 with screen grid of the first embodiment of the present invention is used for crushing the inclusions G contained in the water to be treated flowing through the water channel R. The crusher 100 with screen grid of this embodiment is equipped with: a crusher 1 for crushing inclusions G contained in the water to be treated flowing through the waterway R; and a screen grid device 2A for removing inclusions The material G is transferred to the crusher 1. The crusher 1 is arranged on one side of the screen grid device 2A. In addition, the crusher 1 and the screen grid device 2A are installed close to each other so as to straddle the waterway R. The crusher 1 is used to crush the inclusions G in the treated water flowing through the waterway R. In addition, the crusher 1 only needs to be arranged so as to supply the inclusions G from the screen grid device 2A. For example, as shown in FIG. 1, it can be arranged between the screen grid device 2A and the side wall R2 of the water channel R. . Furthermore, as the crusher 1 of the present embodiment, any type of crusher may be used, and examples of the crusher include a vertical biaxial crusher and a horizontal crusher. As the crusher 1 of this embodiment, although the example which gave the vertical type crusher was mentioned, it is not limited to this. In addition, the vertical crusher exemplified in this embodiment has the advantage that the crusher 1 can be installed uniformly along the height direction of the screen grid device 2A. As shown in Fig. 1, in the crusher 1, an inlet 11 for introducing the water to be treated is formed on the front (upper side of the figure), and an outlet 12 for discharging the water to be treated is formed on the rear surface. In addition, in the crusher 1, two rotary crushing knives 13a, 13b are rotatably supported on the outer periphery of a shaft extending in the vertical direction (the vertical direction of the paper), and the two blades are meshed with each other. It is arranged in the width direction of the waterway R. Moreover, the crusher 1 is equipped with the drive part (not shown) which rotationally drives the rotary crushing knife 13a, 13b in the upper part. In addition, as the drive unit of this embodiment, a vertical motor is provided. In addition, the crusher 1 is driven by a drive unit (vertical motor), whereby the rotary crushing knives 13a, 13b are rotated in the direction of the inclusion G, and the treated water is introduced from the inlet 11 and the treated water The inclusions G and the inclusions G transferred from the screen grid device 2A bite between the rotary crushing knives 13a and 13b to be crushed, and are discharged from the discharge port 12 to the downstream side. In addition, as shown in FIG. 1, in the crusher 1 of this embodiment, the drive unit drives with a predetermined output to rotate the rotary crushing knife 13a in the clockwise direction and rotate the rotary crushing knife 13b in the counterclockwise direction. By rotating, the inclusion G is broken. The screen grid device 2A is used to transfer the inclusions G to the crusher 1. The screen grid device 2A is installed on the upstream side of the crusher 1 to capture the inclusions G in the water to be treated and scrape the inclusions G to the crusher 1. Thereby, the impurities G can be reliably supplied to the crusher 1, and the crushing efficiency of the crusher 100 with a screen grid can be improved. Hereinafter, the screen grid device 2A will be described in detail. (Screen grid device) Fig. 2 is a schematic explanatory diagram showing the structure of the screen grid device for a crusher in the first embodiment of the present invention. In addition, the arrows of the single-dot chain line indicate the parts connected together in a controllable manner. The screen grid device 2A of this embodiment is equipped with the screen grid part 3 for transferring the foreign material G, and the control part 4 for controlling the operation of the screen grid part. In addition, the screen grid part 3 is provided with: a screen grid 5 for capturing inclusions G; and a rotating scraper part 6 for scraping the inclusions G captured by the screen grid 5 to the crusher 1. The screen grid 5 is composed of a plurality of screen grid members stacked in a substantially vertical direction, and each screen grid member is arranged separately. The treated water flowing from the upstream of the screen grid 5 passes through the gap between the screen grid members, and the inclusions G larger than the gap between the screen grid members are caught on the upstream side of the screen grid 5. In addition, the member constituting the screen grid 5 may be any type of member, for example, may be constituted by a plate member having a plurality of slits formed in a substantially horizontal direction. In the screen grid 5, the end on the other side (the side opposite to the crusher 1) is fixed to the side wall R1 of the water passage R, and one side (the crusher 1 side) extends to the approximate center of the water passage R and forms There is an arc portion that is curved in an arc shape from the approximate center of the water passage R toward the downstream side. In addition, one side of the screen grid 5 is fixed to the side surface of the casing at the center side of the water passage of the crusher 1. In addition, from the viewpoint of the efficiency of capturing and transferring the inclusions G, it is preferable that the shape of the screen grid 5 has an arc part, but it is not limited to this. For example, it may have an arc-shaped part formed by a broken line from the substantially center of the water path R toward the downstream side. As mentioned above, an arc part is formed on one side of the screen grid 5 (the crusher 1 side), and the arc part extends to the upstream area of the aforementioned crusher 1. Thereby, the inclusions G caught by the screen grid 5 can be appropriately guided to the position where the blades of the crusher 1 engage. The rotating scraper portion 6 is composed of a rotating shaft 63, a plurality of scrapers 61 fixed to the rotating shaft 63, and a driving portion 64 that drives the rotating shaft 63 to rotate. The squeegee 61 is a flat plate having a thickness that can pass through the gaps between the stacked screen grid members, and the rotating squeegee portion 6 is provided with the same number of squeegees as the gaps formed in the screen grid 5 along the height direction. 61. In addition, the case where the scraper 61 is rotated in the direction in which the inclusions G are transferred to the crusher 1 side by the drive portion 64 is referred to as the forward rotation operation of the rotating scraper portion 6, especially the scraper 61 When the speed is within a predetermined range, it is called normal operation. The scraper 61 of the rotating scraper portion 6 is used to scrape the foreign matter G. As the material of the squeegee 61, one made of elastic bodies such as rubber or leaf spring is preferable, and one made of hard rubber is particularly preferable. With this, when hard inclusions G such as wood are interposed, the scraper 61 will be elastically deformed, and therefore the breakage of the scraper 61 can be suppressed. In addition, the shape of the scraper 61 is not particularly limited as long as it is a shape that can scrape the inclusions G. For example, the front end of the scraper 61 shown in FIG. 1 has: the end of the front side in the direction of rotation of the scraper 61 during forward rotation is longer in the radial direction than the opposite An inclined surface 62 of the length in the radial direction of the end on the back side of one side. In this way, the inclusions G are not entangled at the front end of the scraper, but can be efficiently transferred. A plurality of scrapers 61 are fixed to the rotating shaft 63 of the rotating scraper portion 6, and the scrapers 61 are arranged to maintain eccentricity with the center of the arc portion of the screen grid 5. If the rotating shaft 63 is rotationally driven by the driving portion 64 and the scraper 61 revolves around the rotating shaft 63, the scraper 61 will protrude from between the screen grid members. In addition, while the scraper 61 protrudes from the outer peripheral surface of the screen grid 5, the inclusions G captured by the screen grid 5 are scraped and flow into the crusher 1. Regarding the fixed position of the squeegee 61 with respect to the rotating shaft 63, it is not particularly limited as long as the squeegee 61 is arranged along the height direction and provided with the same number of squeegees 61 as the gaps formed in the screen grid 5. For example, an arrangement method in which all the scrapers 61 are arranged in a row with respect to the rotating shaft 63 can be cited. Thereby, the design and assembly of the rotating blade part 6 become easy. In addition, an arrangement in which the angle of the scraper 61 is shifted with respect to the rotating shaft 63 to be fixed and arranged in a radial or spiral shape can be cited. Thereby, the amount of inclusions G transferred to the crusher 1 can be dispersed, a large amount of inclusions G can be prevented from being processed on the crusher 1 at the same time, and the inclusion G in the crusher 1 can be prevented from being seized. . At this time, a plurality of squeegees 61 may be set as a squeegee group, and each squeegee group may be staggered by an angle for fixing. Thereby, the scraping power of the inclusion G can be reduced. The driving part 64 of the rotating squeegee part 6 is for rotationally driving the rotating shaft 63. In addition to the forward rotation operation that rotates in the direction in which the inclusions G are transferred to the crusher 1 side, the drive unit 64 also has a function of performing the reverse rotation operation that rotates in the direction opposite to the forward rotation operation. In addition, the drive unit 64 is not particularly limited as long as it can rotationally drive the rotating shaft 63. For example, an example in which a vertical motor is used similarly to the driving part of the crusher 1 is mentioned. In addition, the driving portion 64 of the rotating scraper portion 6 is driven so that the rotation speed of the tip of the scraper 61 is slower than the rotation speed of the outer circumference of the rotating crushing blades 13a, 13b of the crusher 1. For example, the rotation speed of the tip of the scraper 61 is preferably 70% or less of the rotation speed of the outer circumference of the rotary crushing blades 13a, 13b of the crusher 1. Thereby, the inclusions G scraped by the scraper 61 can be easily introduced into the crusher 1, and the inclusions G can be transferred to the crusher 1 more efficiently and reliably. In addition, regarding the rotating scraper portion 6 of the present invention, as long as it can scrape the inclusions G captured by the screen grid 5 to the crusher 1, it can have any structure and can be adapted to the shape of the screen grid 5. Come and design appropriately. For example, in addition to the structure including the rotating shaft 63 and the squeegee 61 as shown in the rotating squeegee portion 6 of the first embodiment, there may also be a recirculating squeegee portion of the third embodiment described later. As shown in 8, it is equipped with a chain with a scraper and a structure with multiple sprockets for the chain to revolve. As shown in the rotating scraper portion 6 of the first embodiment, the rotating scraper portion 6 consisting of a rotating shaft 63 and a scraper 61 radially mounted from the rotating shaft 63 does not perform like a chain and a sprocket. The meshing structure is a simple structure, so it has the advantage that it is not easy to cause troubles such as inclusions entangled in the rotating scraper portion 6 and the like. As mentioned above, by using the driving part 64 to rotate the rotating scraper part 6, the inclusions G caught by the screen grid 5 can be scraped to the crusher 1, and the crusher 1 can The material G is crushed. (Control part (control device of screen grid device for crusher)) The control unit 4 is used to control the operation of the screen grid unit 3. In addition, the control unit 4 is used to control the operation of the screen grid device 2A alone, and to control the operation of the screen grid device 2A alone in order to control the operation of the crusher 1 independently. The control part 4 may be directly connected to the screen grid part 3 through wiring or the like, or may be indirectly connected through communication technologies such as wireless. The control unit 4 of the present embodiment includes a determination unit 41 for determining the operating state of the screen grid portion 3 and a screen grid portion operation control unit 42 for controlling the operating state of the screen grid portion 3. The determination unit 41 is used to determine the operating state of the screen grid portion 3 and use the determination result as a reference for controlling the operation of the screen grid portion 3. The operating state of the screen grid portion 3 refers to whether the rotating scraper portion 6 is in an overload state due to the accumulation or entrapment of the inclusions G in the screen grid 5. The method of the judging unit 41 for judging the operating state of the screen grid unit 3 is not particularly limited. For example, a method for detecting foreign objects such as inclusions G on the screen grid 5, a method for detecting an increase in the output of the drive unit 64 of the rotating squeegee unit 6, and the like can be cited. Specifically, a mechanism for detecting the current value of the driving portion 64 of the rotating scraper portion 6 is provided, and the operating state of the screen grid portion 3 is determined based on the change in the current value. Since the current value can be detected in a short time (1 second or less), the overload state of the rotating blade portion 6 can be judged instantly. In addition, the judging unit 41 may have a function of receiving an operation command from the outside for the crusher 100 with a screen grid or the screen grid section 3, and perform the operation of the screen grid section 3 according to the content of the operation command from the outside. Judgment of running status. The screen grid part operation control part 42 is for controlling the operation state of the screen grid part 3. In addition, the control of the operating state of the screen grid portion 3 refers to the control of the drive/stop, deceleration/acceleration, and rotation direction of the rotating scraper portion 6. The method for controlling the operating state of the screen grid portion 3 is not particularly limited. For example, a method of controlling the output of the driving section 64 of the rotating squeegee section 6 by an on and off switching mechanism, an inverter, or the like can be cited. In addition, the structure of the control unit 4 can be independently provided as the control device of the present invention. The control device can be applied to the screen grid device in the existing crusher with screen grid. Thereby, there is no need to update the screen grid device, and with simple installation work, it is possible to provide: the operating method of the screen grid device for crusher and the screen grid device for crusher of the present invention. (Operation control of screen grid device for crusher) The screen grid device for a crusher, the control device of the screen grid device for a crusher, and the operation method of the screen grid device for a crusher of the present invention perform operation control corresponding to the operating state of the screen grid portion 3. Hereinafter, as an embodiment of the present invention, an appropriate operation control corresponding to the operation state of the screen grid portion 3 will be described as an example. In addition, the description and flowchart in each operation control are merely examples of the embodiment, and are not limited to these. First, referring to FIGS. 2 to 4, the operation control when an overload is detected in the operation state of the screen grid portion 3 will be described. Figure 2 and Figure 3 (A) shows the screen grid device 2A during the reverse rotation operation. When the reverse rotation operation is started, Figure 2 and Figure 3 (B) shows the reverse rotation When rotating to remove inclusions. In addition, in FIGS. 2 and 3, the arrangement of the squeegee 61 in the rotating squeegee portion 6 is different. In addition, FIG. 4 shows a flowchart of this operation control. During the start of the operation of the screen grid device 2A and the normal operation, the judging section 41 of the control section 4 determines that the output of the driving section 64 in the rotating scraper section 6 has exceeded and is set as normal operation If the setting value is in an overload state, the screen grid section operation control section 42 of the control section 4 is used to change the rotation direction of the scraper 61 of the rotating scraper section 6 to the reverse Revolving. Also, at this time, the crusher 1 continues to operate. In addition, as shown in FIGS. 2 and 3, the reverse rotation operation of the rotating scraper portion 6 is performed based on the time point T1 when the overload state is determined. In FIGS. 2 and 3, the scraper 61 is rotated counterclockwise. Direction rotation. In addition, in FIGS. 2 and 3, the position of the squeegee 61 at the time T1 is indicated by a chain line. At this time, in order to remove the inclusion G which is the main cause of the overload, the rotating scraper portion 6 is driven, and the scraper 61 is used to contact the inclusion G from the direction opposite to that during the forward rotation operation. For example, FIG. 2 shows a situation in which the scrapers 61a to 61d are fixed to the rotating shaft 63 at an angle of 90 degrees for each gap of the screen grid 5 in the rotating scraper portion 6. As shown in FIG. 2(A), when a load is applied to the squeegee 61a by the inclusion G, and an overload condition is detected by the judgment unit 41, the reverse rotation operation is started based on the time T1. Moreover, as shown in FIG. 2(B), by rotating the squeegee 61a more than one turn (360 degrees), the inclusion G can be removed. On the other hand, FIG. 3 shows the following situation: in the rotating squeegee portion 6, the squeegees 61a and 61c are offset on the same plane by an angle of 180 degrees to be fixed to the rotating shaft 63, and the squeegee 61b and 61 d is fixed to the rotating shaft 63 at an angle shifted by 180 degrees on the same plane, and the squeegees 61 a and 61 c and the squeegees 61 b and 61 d are shifted by an angle of 90 degrees to be fixed to the rotating shaft 63. As shown in FIG. 3(A), when a load is applied to the squeegee 61a by the inclusion G, and an overload state is detected by the judgment unit 41, the reverse rotation operation is started based on the time point T1. Moreover, as shown in FIG. 3(B), by rotating the squeegee 61a by half a turn (180 degrees) or more, the squeegee 61c on the same plane can remove the inclusions G. As shown in FIGS. 2 and 3, the number of scrapers 61 in the rotating surface A of the rotating scraper portion 6, that is, the number of scrapers 61 passing through a gap formed in the screen grid 5 is 1. In this case, by rotating the scraper 61 one turn (360 degrees) or more, the inclusion G can be removed. In addition, when the number of scrapers 61 on the rotating surface of the rotating scraper portion 6, that is, the number of scrapers 61 passing through a gap formed in the screen grid 5 is 2, by making If the scraper 61 rotates more than half a turn (180 degrees), the inclusions G can be removed. Therefore, with regard to the reverse rotation operation of the rotating scraper portion 6, by rotating more than one turn/(the number of scrapers on the rotating surface) angle, it is possible to remove the inclusions that are the main cause of the overload. G. In addition, as for the reverse rotation operation of the rotating scraper portion 6, it is sufficient to perform at least one rotation/(the number of scrapers on the rotating surface) at least an angle of rotation, and the upper limit is not particularly limited. In addition, regarding the structure of the rotating scraper portion 6 when the number of scrapers 61 installed on each rotating surface is different, in order to reliably remove the inclusions G, the number of scrapers 61 on the rotating surface is used. The minimum value is better to calculate the angle of reverse rotation. In addition, the judging unit 41 may also have a function for grasping the position of the inclusion G accumulated on the screen grid 5, and use the scraper on the rotating surface at the position of the inclusion G which is the main cause of the overload The number of 61 is used to calculate the angle of reverse rotation. With this, it is possible to eliminate the overload state of the screen grid portion 3 by using only the minimum required amount of reverse rotation operation. As shown in Fig. 4, as the reverse rotation operation of the screen grid portion 3, the reverse rotation operation of the rotating scraper portion 6 is performed, and after the reverse rotation operation of a predetermined angle or more is completed, the forward rotation operation is restored, and Perform forward rotation for a predetermined time. Also, after a predetermined time has elapsed, the judgment unit 41 executes the judgment of the operating state of the screen grid portion 3 again, and if it is determined that the overload state of the screen grid portion 3 has been eliminated, the screen grid portion The operation control unit 42 continues the forward rotation operation of the screen grid unit 3. On the other hand, if it is determined by the judging unit 41 that the overload state of the screen grid portion 3 has not been eliminated, the screen grid portion operation control unit 42 executes the reverse rotation operation of the screen grid portion 3 again . Repeat this operation. In addition, as shown in FIG. 4, if the judgment unit 41 judges that it is in an overload state, the counter provided in the judgment unit 41 is activated. Furthermore, it is judged whether the number of times that it is judged to be in the overload state is more than a predetermined number (n times (n is an arbitrary number)). At this time, if it is within n times, the normal operation of the screen grid device 2A is restored. On the other hand, in the case of n times or more, it is determined that it is difficult to eliminate the overload state by the reverse rotation operation, and the operation of the screen grid portion 3 is stopped. With this, if the number of overload detections is within the predetermined number of times, it is possible to eliminate the overload state of the screen grid portion 3 and continue the crushing process, and to avoid the immediate stop of the crushing of the screen grid. The operation of the machine 100. In addition, if the number of detections of overload exceeds the predetermined number of times, from the viewpoint of protecting the screen grid device 2, the operation of the screen grid portion must be stopped. In addition, after stopping the operation of the screen grid portion 3, another method may be tried to eliminate the overload state of the screen grid portion 3. In addition, when the number of times that the judgment unit 41 judges to be in the overload state is the first time, the timer is started, and even if the reset time has not yet elapsed, it is judged as the overload state again. In this case, the operation of the screen grid portion 3 is stopped. In this way, it is possible to detect the failure of the screen grid device 2 as soon as possible, and to appropriately deal with it. In addition, when the reset time has elapsed, the counter and timer are reset. As described above, when the operating state of the screen grid part 3 becomes an overload state, the screen grid part 3 is performed by an angle of 1 revolution/(the number of scrapers on the rotating surface) or more. The reverse rotation of the rotating scraper part 6 can remove the inclusion G which is the main cause of the overload. In addition, after a certain period of time has elapsed, the operating state of the screen grid portion 3 is judged, and when the overload state of the screen grid portion 3 has been eliminated, the operation of the screen grid portion 3 can be restored to normal operation and continue Carry out crushing treatment. On the other hand, when the overload state of the screen grid portion 3 has not been eliminated, the reverse rotation operation is performed again. Furthermore, when an overload state is detected more than a predetermined number of times, it is possible to appropriately respond by stopping the operation of the screen grid portion 3. Moreover, by independently controlling the operation of the screen grid device 2A, the operation of the crusher 1 can be continued, and the crushing treatment of the inclusions G can be continued without reducing the processing efficiency of the crusher 100 as the screen grid. Regarding the above-mentioned operation control, it may be all automatically executed by the control unit 4 as a control program, or may include manual operation by a worker. In addition, from the viewpoint of reducing the labor of the staff, it is better to set the automatic control based on the control program. In this way, the frequency and time of maintenance can be greatly reduced. [Second Embodiment] Fig. 5 is a schematic explanatory diagram showing the structure of a screen grid device for a crusher according to a second embodiment of the present invention. In the screen grid device 2B for crushers of the second embodiment, the scraper 61 of the screen grid device 2A for crushers of the first embodiment is replaced with a scraper having a first inclined surface 66a and a second inclined surface 66b.板65. In addition, regarding the structure of the screen grid device 2B for crushers in this embodiment, the description of the same part as the structure of the screen grid device 2A for crushers of 1st Embodiment is abbreviate|omitted. When the rotating scraper portion 6 is rotated in the reverse direction, when the scraper 65 is housed in the screen grid 5, sometimes the inclusions G caught on the scraper 65 will be brought into the screen together. The inside of the gate 3. Therefore, as shown in FIG. 5, the shape of the squeegee 65 is set at the front part (the back face during the forward rotation operation) during the reverse rotation operation to be provided with: the first part intersecting the outer peripheral surface of the screen grid 5 at an acute angle The first inclined surface 66a and the second inclined surface 66b are preferable. That is, when the scraper 65 performing the reverse rotation operation protrudes from the outer peripheral surface of the screen grid 5, the inclined surfaces 66a and 66b are formed in a state of being inclined backward in the traveling direction. When the scraper 65 is accommodated in the screen grid portion 3, the inclusions G are easily caught at the front end, and the effect of bringing the inclusions G into the screen grid portion 3 is strong. Therefore, although it is better to make the inclination angles of the inclined surfaces 66a and 66b smaller, on the other hand, the effect of scraping the inclusions G is also reduced. Therefore, it is preferable to set the inclination angle of the first inclined surface 66a at the tip of the squeegee 65 to be a little smaller, and to set the inclination angle of the second inclined surface 66b adjacent to the first inclined surface 66a to be larger than the first inclined surface. The inclination angle of the face. Thereby, in the first inclined surface 66a, the inclusions G can be prevented from being caught, and in the second inclined surface 66b, the performance of scraping the inclusions G can be improved. Fig. 6 is an enlarged view of the screen grid device 2B for a crusher of this embodiment. Referring to Fig. 6, the inclined surfaces 66a and 66b will be described in detail. As shown in FIG. 6, the squeegee 65 has the 1st inclined surface 66a and the 2nd inclined surface 66b with which the inclination angle with respect to the outer peripheral surface of the screen grid part 3 differs. In addition, in the present invention, when the outer circumferential surface of the screen grid portion 3 is curved, the angle (inclination angle) formed by the outer circumferential surface of the screen grid portion 3 and the inclined surface refers to the tangent line T of the screen grid portion 3 The angle formed by the inclined plane. The inclination angle (α) of the first inclined surface 66a is not particularly limited, but is preferably 1 to 60°, and particularly preferably 3 to 50°. In the case of less than 1°, since the angle (γ) formed by the first inclined surface 66a and the second inclined surface 66b becomes smaller, the inclusion G is likely to be caught by the first inclined surface 66a and the second inclined surface 66b. Among the angles, if the angle exceeds 60°, the inclination angle becomes larger, so the inclusion G is likely to catch on the tip of the scraper 65. The inclination angle (β) of the second inclined surface 66b is not particularly limited, but is preferably 20 to 89°, and particularly preferably 30 to 70°. In the case of less than 20°, the effect of scraping the inclusion G is small, and sometimes the inclusion G cannot be removed. On the other hand, when it exceeds 89°, the effect of bringing the inclusions G into the screen grid portion 2 together is enhanced, and the inclusions G may flow into the screen grid portion 3. In addition, the angle (γ) formed by the first inclined surface 66a and the second inclined surface 66b is not particularly limited, but is preferably 95 to 175°, and particularly preferably 110 to 165°. In the case of less than 95°, the inclusion G is likely to be caught in the angle formed by the first inclined surface 66a and the second inclined surface 66b. When it exceeds 175°, the first inclined surface 66a and the second inclined surface 66a Since the inclined surfaces of the surface 66b have substantially the same inclination angle, the effect of providing the first inclined surface 66a and the second inclined surface 66b will be reduced. In addition, in the present invention, three or more inclined surfaces may be provided in the blade 65 of the rotating blade portion 6. In consideration of the effect of scraping the inclusions G and transferring them to the upstream side of the screen grid 5, the effect of preventing the inclusions G from being carried into the screen grid portion 3, etc., it is necessary to set different inclination angles Two or more inclined surfaces are preferable. In addition, the inclined surfaces 66a and 66b of the scraper 65 are preferably formed on the entire area protruding from the outer peripheral surface of the screen grid portion 3 in the front portion of the scraper 65 during reverse rotation operation. Thereby, it is possible to further prevent the inclusions G from being brought into the inside of the screen grid portion 3. In addition, in the screen grid device 2B for a crusher of this embodiment, the operation control similar to 1st Embodiment is performed. In the screen grid device for a crusher of the present invention, regarding the structure of the screen grid portion and the installation when applied to a crusher with a screen grid, as long as it is a structure and arrangement that can capture and transport impurities in the waterway However, it is not particularly limited. For example, Figures 7 and 8 show other modes of the crusher with screen grid of the present invention. [Third Embodiment] Fig. 7 is a schematic explanatory diagram showing the structure of a screen grid device for a crusher according to a third embodiment of the present invention. The screen grid device 2C for a crusher of the third embodiment is provided with the following structure as the screen grid portion 30: the screen grid 7 has a long straight portion that is inclined in the downstream direction and The curved arc portion; and the revolving scraper portion 8 have a chain 82 with a scraper 83 installed, two sprockets 81a, 81b for driving the chain 82, and a driving portion 84. In addition, in the structure of the screen grid device 2C for crushers in this embodiment, the description of the same parts as the configuration of the screen grid device 2A for crushers in the first embodiment is omitted. As shown in the third embodiment, regarding the sieve grating device 2C provided with the circulating orbiting scraper portion 8 using a chain and a plurality of sprockets as the sieve grating portion 30, the crusher 100 with a sieve grating It can be set regardless of the width of the waterway R. Therefore, it is a screen grid device for a crusher suitable for installation in a wide waterway R. Regarding the operation control of the screen grid device 2C of the third embodiment, the same operation control as the first embodiment can be performed. [Fourth Embodiment] Fig. 8 is a schematic explanatory diagram showing the structure of a screen grid device for a crusher according to a fourth embodiment of the present invention. The screen grid device 2D for a crusher of the fourth embodiment has a structure installed in the crusher 1 and one housing 9. In addition, a concave fitting piece is provided in the housing 9 as a fitting mechanism 91 that can be easily installed in the water channel R. In addition, in FIG. 8, the same structure as the screen grid device 2A in the first embodiment is shown as the screen grid portion 3 in the fourth embodiment, but it is not limited to this. For example, it may be set to the same structure as the screen grid part 3 in 2nd Embodiment. In addition, regarding the structure of the screen grid device 2D for crushers in this embodiment shown in FIG. 8, the description of the same parts as the configuration of the screen grid device 2A for crushers of the first embodiment is omitted. As shown in the fourth embodiment, with regard to the screen grid device 2D arranged in the housing 9 provided with the fitting mechanism 91, a concave fitting piece and a convex fitting provided on the side wall of the water channel R The pieces are combined and fitted, and can be easily installed in the waterway R as a crusher 100 with a screen grid. Regarding the operation control of the screen grid device 2D of the fourth embodiment, the same operation control as the first embodiment can be performed. In addition, the above-mentioned embodiment is only an example showing the operation method of the screen grid device for crushers, the control device of the screen grid device for crushers, and the screen grid device for crushers. Regarding the operation method of the screen grid device for crusher, the control device of the screen grid device for crusher, and the operation method of the screen grid device for crusher of the present invention, it is not limited to the above-mentioned embodiment, and can be described in the technical solution without changing Within the scope of the stated principles, the operation method of the screen grid device for crusher, the control device of the screen grid device for crusher, and the operation method of the screen grid device for crusher of the above-mentioned embodiment are changed. For example, in the screen grid device for a crusher of this embodiment, you may provide the structure for forming the flow of the to-be-processed water in a screen grid part. For example, a structure in which an inclined surface is provided on the side wall of the water channel can be cited. Thereby, it is possible to form a flow of the water to be treated with respect to the screen grid portion, and to prevent inclusions from accumulating on the bottom of the side wall of the water channel. In addition, a structure in which a water flow guide plate is provided on the scraper and is rotated together with the rotating shaft can be cited. Thereby, a water flow can be formed from the rotating scraper portion toward the screen grid side, and the inclusions caught by the screen grid can be easily peeled off from the outer periphery of the screen grid. By providing the above-mentioned structure, the inclusions caught by the screen grid device can be efficiently transferred to the crusher, and the inclusions can be crushed more reliably. In addition, for example, in the screen grid device for a crusher of this embodiment, a plurality of screen grid portions may be provided. Moreover, when a plurality of screen grid parts are provided, it is preferable that each screen grid part can operate independently. Thereby, the screen grid parts can be operated with a time difference between each other, the inclusions can be dispersed and transferred to the crusher, and the load on the crusher can be reduced. In addition, for example, the operation control of the screen grid device for a crusher of this embodiment can be performed independently of the operation control of the crusher, but the screen grid device based on the operating state of the crusher may also be performed. Operational control. Thereby, when there is an abnormality in the operating state of the crusher, it can also be dealt with by performing the operation control of the screen grid device. [Industrial availability] The screen grid device for the crusher, the control device of the screen grid device for the crusher, and the operation method of the screen grid device for the crusher of the present invention can be used to treat the inclusions in the treated water flowing through the waterway. Specifically, in the grit tank of a sewage treatment plant, it can be used to capture and crush inclusions such as screen residues. In addition, regarding the control device of the screen grid device for crushers of the present invention, as long as it is installed in the screen grid device of the existing crusher with a screen grid, the entire device does not need to be updated, and it can be easily installed Work to provide the screen grid device for crusher of the present invention.

100:附篩格柵之破碎機 1:破碎機 11:導入口 12:排出口 13a,13b:旋轉破碎刀 2A,2B,2C,2D:篩格柵裝置 3,30:篩格柵部 4:控制部 41:判斷部 42:篩格柵部運轉控制部 5:篩格柵 6:旋轉刮板部 61,61a,61b,61c,61d:刮板 62:傾斜面 63:旋轉軸 64:驅動部 65:刮板 66a:第1傾斜面 66b:第2傾斜面 7:篩格柵 8:循環繞轉刮板部 81a,81b:鏈輪 82:鏈條 83:刮板 84:驅動部 9:殼體 91:嵌合機構 G:夾雜物 R:水路 R1,R2:側壁100: Crusher with screen grid 1: Crusher 11: inlet 12: Outlet 13a, 13b: Rotary crushing knife 2A, 2B, 2C, 2D: Screen grid device 3,30: Screen grid part 4: Control Department 41: Judgment Department 42: Operation control part of screen grid part 5: Screen grid 6: Rotating scraper section 61, 61a, 61b, 61c, 61d: scraper 62: Inclined surface 63: Rotation axis 64: Drive 65: Scraper 66a: The first inclined plane 66b: The second inclined plane 7: Screen grid 8: Circulate around the scraper section 81a, 81b: sprocket 82: Chain 83: Scraper 84: Drive 9: Shell 91: Mosaic mechanism G: Inclusion R: Waterway R1, R2: side wall

[圖1]係表示具備本發明的第1實施方式的破碎機用篩格柵裝置之附篩格柵之破碎機的結構之概略說明圖。 [圖2]係表示本發明的第1實施方式的破碎機用篩格柵裝置的運轉控制之概略說明圖。 [圖3]係表示本發明的第1實施方式的另一破碎機用篩格柵裝置的運轉控制之概略說明圖。 [圖4]係表示本發明的第1實施方式的破碎機用篩格柵裝置的運轉控制之流程圖。 [圖5]係表示本發明的第2實施方式的破碎機用篩格柵裝置的結構之概略說明圖。 [圖6]係表示本發明的第2實施方式的破碎機用篩格柵裝置中的篩格柵部的結構之放大圖。 [圖7]係表示本發明的第3實施方式的破碎機用篩格柵裝置的結構之概略說明圖。 [圖8]係表示本發明的第4實施方式的破碎機用篩格柵裝置的結構之概略說明圖。Fig. 1 is a schematic explanatory diagram showing the structure of a crusher with a screen grid equipped with a screen grid device for a crusher according to the first embodiment of the present invention. Fig. 2 is a schematic explanatory diagram showing the operation control of the screen grid device for a crusher according to the first embodiment of the present invention. Fig. 3 is a schematic explanatory diagram showing the operation control of another screen grid device for a crusher according to the first embodiment of the present invention. Fig. 4 is a flowchart showing the operation control of the screen grid device for a crusher according to the first embodiment of the present invention. Fig. 5 is a schematic explanatory diagram showing the structure of a screen grid device for a crusher according to a second embodiment of the present invention. Fig. 6 is an enlarged view showing the structure of the screen grid portion in the screen grid device for a crusher according to the second embodiment of the present invention. Fig. 7 is a schematic explanatory diagram showing the structure of a screen grid device for a crusher according to a third embodiment of the present invention. Fig. 8 is a schematic explanatory diagram showing the structure of a screen grid device for a crusher according to a fourth embodiment of the present invention.

5:篩格柵 5: Screen grid

61a:刮板 61a: scraper

61b:刮板 61b: scraper

61c:刮板 61c: scraper

61d:刮板 61d: scraper

G:夾雜物 G: Inclusion

Claims

A screen grid device for a crusher is a crusher used to transfer inclusions to inclusions in a crushing waterway. The screen grid device for a crusher is characterized by: The screen grid part is used to transfer the aforementioned inclusions; and The control part is used to control the operation of the aforementioned screen grid part, The screen grid portion is composed of a screen grid for capturing the inclusions and a rotating scraper portion provided with a scraper for scraping the inclusions captured by the screen grid, The aforementioned control unit performs the following control: when an overload is detected in the aforementioned screen grid portion, the aforementioned screen grid portion reverses by an angle of 1 revolution/(the number of scrapers on the rotating surface) or more. To rotate.

The screen grid device for crusher as described in item 1 of the scope of patent application, wherein The aforementioned control unit performs the following control: after performing the aforementioned reverse rotation operation, it returns to the forward rotation operation, and when an overload is detected after the execution of the forward rotation operation for a predetermined time, the reverse rotation operation is performed again, and no detection is made. The system continues to rotate in the forward direction when overloaded.

The screen grid device for crusher as described in item 1 or 2 of the scope of patent application, wherein When the number of detections of overload exceeds a predetermined number of times, the control unit stops the operation of the screen grid unit.

A control device of a sieve grid device for a crusher, which is installed in the sieve grid device of the crusher used to transfer the inclusions to the inclusions in the crushing waterway. The characteristic of the control device is, The screen grid device for the crusher is provided with a screen grid portion for transferring the inclusions. The screen grid portion is composed of a screen grid for catching the inclusions and provided with a screen for scraping the inclusions. It is constituted by the rotating scraper part of the scraper which caught the aforementioned inclusions, The control device is provided with a control unit for controlling the operation of the screen grid unit, The aforementioned control unit performs the following control: when an overload is detected in the aforementioned screen grid portion, the aforementioned screen grid portion reverses by an angle of 1 revolution/(the number of scrapers on the rotating surface) or more. To rotate.

A method for operating a screen grid device for a crusher. The screen grid device for a crusher is a crusher used to transport inclusions to the inclusions in the crushing waterway, and the operation method of the screen grid device for the crusher Characterized by, The aforementioned screen grid device for a crusher is provided with: a screen grid portion for transferring the inclusions; and a control portion for controlling the operation of the aforementioned screen grid portion, The screen grid portion is composed of a screen grid for capturing the inclusions and a rotating scraper portion provided with a scraper for scraping the inclusions captured by the screen grid, This operation method includes the following steps: When an overload is detected in the screen grid portion, the screen grid portion is reversed by an angle of 1 revolution/(the number of scrapers on the rotating surface) or more. To rotate.