JPH05253697A - Sewage dehydrating device - Google Patents

Abstract

PURPOSE:To facilitate supplying and dehydrating sewage by supporting a press plate and a lower roller by a connecting arm and providing a means opening/ closing and rocking the press plate. CONSTITUTION:The sewage is thrown in through a chute 10 when a clearance is made between an upper roller 3 and a link plate 4 by the opening/closing cum 35 of the upper roller 3. A second dehydration is carried out when the sewage is supplied between the upper roller 3 and the lower roller 6 after a first dehydration is carried out between the press plate 4 and the upper roller 3. The connecting arm 7 is applied with a force in a push-up direction by a weight 9 and the connecting arm 7 moves freely rocking by the opening/closing cum 35 of the upper roller 3. Thus, making a clearance and contacting each other between the press plate 4 and the lower roller 6 are repeated by the connecting arm 7. The dehydrated sewage between the upper roller 3 and the lower roller 6 is discharged from a main body frame 1 through a discharging chute 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a residue dehydrator suitable for compressing and dehydrating residue generated from a sewage treatment plant, a pump station or the like. [Prior Art] There is a residue dehydrator disclosed in Japanese Utility Model Publication No. 58-41034, which comprises a roller and a press plate which is disposed on the outer peripheral surface of the roller and can be pressed against the outer peripheral surface of the roller. [Problems to be Solved by the Invention] In order to supply the residue between the upper roller and the press plate, it is necessary to decenter the upper roller or to provide a notch for feeding the residue on the surface of the upper roller. It gets complicated. Further, when the cuts on the surface of the upper roller are accompanied by the residue, the function of supplying the residue between the upper and lower rollers is deteriorated. [Means for Solving the Problems] The present invention has been made to achieve the above-mentioned object, and the press plate and the lower roller are axially supported by a connecting arm, and the press plate and the lower roller are both the upper roller. The gist of the present invention is to provide the connecting arm with a means for press-contacting the press plate, and to provide a means for opening and closing the press plate. [Examples] The present invention will be described below based on illustrated examples. In FIG. 1, 1 is a main body frame of a screen residue dehydrator for supplying residue and compressing and dehydrating it, and an upper roller 3 for removing residue residue having a required diameter and strength is housed in the body frame 1 and both ends thereof. It is rotatably supported by the main body frame 1 via the bearings 31, 32 arranged. Support shaft 33 of the upper roller 3
The sprocket wheel 34 of the drive unit 2 mounted on the body frame 1 is fixed to the sprocket wheel 34 at one end of the
The chain 22 is stretched between the wheel 34 and the wheel 34, and the upper roller 3 is driven to rotate at a required rotation speed. Opening and closing cams 35, 35 are provided on the outer peripheral surface of the upper roller 3 at both end positions of the upper roller 3, and the opening and closing cam 35 follows the rotation of the upper roller 3 and is provided on a press plate 4 described later. The lower roller 6 and the lower roller 6 are in contact with each other. The press plate 4 is bent in an arc shape along the outer peripheral surface of the upper roller 3, and the lower part thereof is axially supported by one end of a T-shaped connecting arm 7 via an axis P1 and the upper end of the press plate 4 is also supported. The lower end of the chute 10 is swingably arranged.
A lower roller 6 is rotatably supported by the other end of the connecting arm 7 via a shaft P2, and the lower roller 6 is supported by the upper roller 3
Contact with. The lower end of the connecting arm 7 is pivotally supported by one end of the swing arm 8 via a shaft P3, and the swing arm 8 is swingably supported by the main body frame 1 via a bearing 81 and a shaft 82. Further, a weight 9 is provided on the other end of the swing frame 8, and the press plate 4 is operated by the weight 9.
Also, the lower roller 6 is pressed against the outer peripheral surface of the upper roller 3. Further, the press plate 4 is provided with a roller 5 at a position in contact with the cam position of the upper roller 3, and when the roller 5 comes into contact with the cam 35 of the upper roller 3, a gap is generated between the upper roller 3 and the press plate 4, The residue is supplied through the chute 10 between the open press plate 4 and the upper roller 3. The rotating shaft 33 of the upper roller 3 and the press plate 4 serve as another means for opening and closing the press plate.
A crank shaft may be provided between them, or an eccentric cam may be provided on the rotary shaft 33 so that an operating rod connected to the press plate 4 is brought into contact with the eccentric cam. Although the swing arm 8 is provided with a weight 9 so as to obtain a pressure contact force to the upper roller 3 of the lower roller 6, maintenance and maintenance are simplified. However, instead of the weight 9, a spring and a cylinder are used. It is also possible to directly press the connecting arm 7 toward the upper roller side from the lower side by using the above. A discharge chute 11 is provided in the vicinity of a part of the outer peripheral surface of the crotch roller 6, and the residue that has been compressed and dehydrated between the upper roller 3 and the lower roller 6 is discharged to the outside of the main body frame 1 through the discharge chute 11. Do like this. Next, the operation of the screen residue dehydrator of the present invention will be described. The residue is thrown through the chute 10 when a gap with the link plate 4 is generated by the opening / closing cam of the upper roller. Then, after being compressed between the press plate 4 and the upper roller 3 for primary dewatering, it is supplied between the upper roller 3 and the lower roller 6 and secondly dewatered there. A force acts on the connecting arm 7 in the direction of pushing it up from below by the weight 9, and the connecting arm 7 can be swung by the opening / closing cam 35 of the upper roller 3. Therefore, the press plate 4 and the lower roller 6 repeat the movements of forming a gap and making contact with the upper roller 3 by the connecting arm 7, respectively. Then, the drainage chute 11 discharges the dewatered residue between the upper roller 3 and the lower roller 6 to the outside of the main body frame 1. [Advantages of the Invention] According to the present invention, by providing a means for supporting the press plate and the lower roller with a connecting arm and for swinging the press plate to open and close, a simple device for supplying and dewatering residue is provided. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a detailed view of a roller. 1 is a main body frame, 3 is an upper roller, 4 is a press plate, 6 is a lower roller, 7 is a connecting arm, 8 is a swing arm,
9 is a weight.

Claims (1)

Claims: (1) In a residue dehydrator for compressing and dehydrating residue by pressing a press plate and a lower roller under the upper roller, the press plate and the lower roller are pivotally supported by a connecting arm. And a means for pressing both the press plate and the lower roller against the upper roller in the connecting arm, and means for opening and closing the press plate are provided.