JPH0319925Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an improvement of a plate opening device for a filter press that opens a large number of parallel plates one by one and discharges the cake.

``Prior art'' Conventionally, a filter press plate opening device opens a large number of parallel plates at once, and as a result of over-operation,
There are those that discharge the resulting cake, and those that discharge the cake by opening a large number of parallel plates one by one from one end. This invention belongs to the latter category, and Japanese Patent Publication No. 56-51006 is one example.

``Problem that the invention aims to solve'' In conventional filter presses of this type, the plates arranged in parallel on the guide rail are supported at two points, with the left and right arms supported by the guide rails respectively, so it is difficult to open the plates. When moving the cloth on the guide rail, it is difficult to move it smoothly because it swings back and forth or falls down, and it is especially difficult to move the cloth smoothly when it is opened and the cloth is shaken or washed. ,
The front and rear boards fall down or sway. Also,
In addition, cloth is sandwiched between the closed plates to form overchambers, and rubber material provided on the sealing surface of each plate is sandwiched between the plates, so as the plates are opened one after another, As a result, minute errors in the elastic return of these cloths and sealing materials accumulate, resulting in a large deviation at the end of the plate opening, which shifts the operating position of the vibration device that is used to completely peel off the cake after the plate is opened. There are other problems.

``Means for solving the problem'' Therefore, in this invention, first, the top and bottom of the board are connected with a chain approximately the same length as the opening pitch, so that the board does not fall down after opening, and The shifter for plate opening is equipped with a cylinder that extends a predetermined length (approximately the opening pitch) from the finished plate as a base point. When filtering sludge, etc. and discharging the resulting cake, the above-mentioned plates are sequentially opened and discharged one by one. In addition to connecting with a chain of the same length as the opening pitch, the shifter for opening and closing the plate provided along the plate row has a function of pressing the plate to be opened next time, using the plate as a reference point after the plate has been opened. It is equipped with a cylinder that can do this.

``Operation'' This idea first connects the top and bottom of the adjacent front and back of the parallel plates with a chain of the same length as the open plate pitch, and presses it with a cylinder installed in the shifter. Compared to the case where the cloth is connected at two points in one place, when the cloth is opened and the cloth is vibrated, it is possible to prevent the board from falling back and forth, and the above-mentioned cylinder allows the cloth to be opened at a predetermined level. It is possible to ensure the exact pitch between the plates. In other words, in the open state, the left and right plates are pressed by the cylinder,
The cloth does not fall or swing when vibrating or washing the cloth, and the positions of the vibrating device, cleaning device, and cylinder are constant, so these devices can be placed in a predetermined position relative to the cloth. It can be operated with.

``Example'' This invention will be described in detail based on the drawings. In FIG. 1, 1 is a large number of plates arranged in parallel on a guide rail 2, and 3 is a chain equipped with a shifter 4 for opening these plates 1. , is capable of reciprocating movement along a guide rail 2, and 5 is its drive motor. Reference numeral 6 denotes a gate-shaped frame provided so as to straddle the rows of plates, and is provided with an excitation device 7. This frame 6 is provided with a pair of claws 8 and 9 that constitute the shifter 4, and a cylinder 10 for preventing the plate from falling. The structure of the frame 6 portion will be explained in more detail based on the second original drawing. Of the pair of claws 8 and 9, the left claw 8 is caused by the frame 6 being pulled by the chain 3 and moving to the left in the figure. When moving, it is pivoted to the frame 6 so that it can be moved by passing under the holding arm of the left board, and when it has finished passing through the board, it stands up and moves with the right claw 9. The holding arms of the plate 1 can be held. Further, the cylinder 10 is fixed to the frame 6, and by extending the cylinder 10, the plate to be opened next time can be pressed with reference to the plate held by the pair of claws 8 and 9 mentioned above. It is made possible to do so. Also, code 11
is a chain that connects mutually adjacent plates 1 at the top and bottom of the left and right side parts, and has a length that matches the predetermined opening pitch L of the plates. In addition, number 12 in the figure is a chain for hanging cloth, 1
3 is a spring, and 7 is a cloth vibration device used when peeling of the cake is difficult. Also, the second
In the figure, the rear clearance L when the plate is opened is
This is provided in advance to cope with the narrowing of the opening pitch due to the elastic restoration of the sealed portion of the plate and cloth when the plate is opened.

The plate opening device according to this invention is constructed as described above, and the front and rear plates are connected to the front plate 1 at four points above and below the side surfaces by chains 11, so that the plates are opened and pressed by the cylinder 10. By doing so, the plate will not fall back and forth, and the plate can be opened at a predetermined pitch. That is, the plates can be opened at intervals L equal to the length of the chain 11 based on the opened plate.In other words, the plates can be opened at predetermined intervals with the frame 6 as a reference, so the The vibration device 7 and the cleaning device can be placed at a predetermined position relative to the cloth provided between the opened plates, and can also be used to vibrate the cloth in the case of poor peeling or to clean the cloth after the plates are opened. To,
This prevents the board from falling or swinging.

"Effect of the invention" As is clear from the above explanation, according to this invention, when the plates are opened, the front and rear plates are connected by a chain at four points, and the opening distance is ensured at a predetermined interval. In addition, the vibration device and cleaning can be operated as specified without causing the front and rear plates to fall or swing due to pressure applied to the cylinder when vibrating or cleaning the cloth. This eliminates the drawbacks of conventional filter presses of this type, which open the plates one by one and peel off the cake.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a filter press incorporating this invention, and FIG. 2 is a side view of the main parts of this invention. Code explanation, 1... Board, 2... Guide rail, 4
...Shifter, 10...Cylinder, 11...Chain.

Claims (1)

[Scope of utility model registration request] In a filter press in which sludge, etc. is passed through a large number of parallel plates 1 in a closed state, and the resulting cake is discharged, the plates are opened one by one and discharged. The upper and lower sides of the adjacent front and rear plates 1 are connected by a chain 3 having the same length as the predetermined plate opening pitch, and a shifter 4 for opening and closing the plate provided along the plate row is provided with a chain 3 for opening and closing the plate after the plate has been opened. A plate opening device for a filter press, characterized in that a cylinder 10 is provided which can press a plate 1 to be opened next time, using the plate 1 as a starting point.