JPH0463107A - Clamper for filter press - Google Patents

Abstract

PURPOSE:To improve the working efficiency by meshing a threaded rod with a worm gear connected to a motor and interposing a hydraulic cylinder of short stroke between the worm gear and the rearmost filter plate. CONSTITUTION:The rear part of a rod 6' with the tip directed toward the rearmost filter plate 4 is loosely inserted into a support 2, a male screw 6'' is formed on its one end, a hydraulic cylinder 15 of short stroke is fixed to the tip, and the rod 15' is abutted on the rearmost filter plate 4. A gear 11 concentric with the rod 6' is meshed with a pinion 10 provided to the output shaft of a motor 9, a worm gear 12 to be meshed with the male screw 6'' of the rod 6' is integrated with the gear 11, the rod 6' is freely attached to or detached from the rearmost filter plate 4 by the forward or backward rotation of the motor 9, and the frame is opened or clamped. Consequently, when the filter plates of a filter press are clamped, the frame is rapidly clamped and opened by the frame opening stroke.

Description

[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology is a device that presses a large number of attached corrugated plates into a tight state along their guide rails when performing a predetermined solid-liquid separation using a filter press. belongs to the technical field of structure.

<Summary of the gist> Therefore, the invention of this application separates the last filter plate from a predetermined number of filter plates that can be opened and clamped to the guide rail of a filter press in order to perform a solid-liquid separation action. This invention relates to a device for sufficiently clamping a support body erected by a rod while taking a reaction force against the support body. The worm gear rapidly approaches the rearmost filter plate at a predetermined speed through the screwed motor, and the proximity switch detects the approach and stops, and the short stroke interposed between it and the rearmost filter plate is activated. This invention relates to a filter press clamping device in which clamping is performed using a hydraulic cylinder with a predetermined amount of pressure, and the reaction force can be taken off by a stopper for a rod attached to a support body.

<Prior art> As is well known, as civil society improves, various industries become more and more prosperous in industrial society, and chemical and mechanical equipment technology, which is central to these industries, becomes more and more important. Solid-liquid separation technology in pharmaceutical and heavy chemical industries is becoming increasingly important as pollution issues become more of a focus.

<Problems to be Solved by the Invention> Among such solid-liquid separation techniques, solid-liquid separation using a filter press is extremely widely used in many industries because of its efficiency and reliability.

Therefore, as is known to those skilled in the art, when a filter press is in operation for its solid-liquid separation function, it is extremely important that a predetermined number of arranged filter plates are tightly pressed together. Generally, the rod is pushed forward and clamped by a hydraulic cylinder interposed between the filter plate at the rear end and a predetermined support that stands apart from the filter plate. Usually, as shown in Fig. 7, the filter press 1
A predetermined number of filter plates 4, 4, . A technique in which the rod 6 is clamped to a predetermined pressure is well known.

When compressing the filter plates 4, the filter plates 4, which are in an open frame state, are placed close to each other in the above-mentioned state in order to insert a filter cloth to each filter plate in the preceding process and to perform a cleaning action. In order to do this, the rod 6, which is in the retracted state, must be pushed forward with a considerable stroke at first, and if the rod 6 is pushed forward rapidly in order to increase its efficiency, it may damage the filter plate 4 or wear out the filter cloth. There is a problem in that efficiency deteriorates if the cylinder is pushed at low speed from the start, and there is also a problem in power management in that a considerable pressure must be applied to the hydraulic cylinder 5 because the reaction force of the solid-liquid separation action is extremely large. Ta.

Although there is a technique to add trouble to a hydraulic cylinder that uses a large pressure for clamping, the problem of not being able to quickly approach the stroke of the filter plate at the rear end has not been solved.

<Object of the Invention> The object of the invention of this application is to solve the problem of pressing the filter plate of the filter press based on the above-mentioned prior art as a technical problem to be solved, and to take full advantage of the reliable pressing force of the hydraulic cylinder. However, the rear end approaches the filter plate rapidly and final approaches at low speed, and the reaction force is supported by the worm gear mechanism and the stopper in the support, making it possible to utilize chemical mechanical equipment technology in various basic industries. It is an object of the present invention to provide an excellent filter press clamping device that will benefit the field.

<Means/effects for solving the problem> In order to solve the above-mentioned problem, the structure of the invention of this application, which is based on the scope of the above-mentioned patent claims, is to solve the above-mentioned problem. Solid-liquid separation (
When the filter plates are pressed close to each other, the end of the rod, whose tip is opposed to the filter plate at the rear end via a short-stroke hydraulic cylinder, is loosely inserted into the support. is,
A male screw is threaded into the predetermined length of the rod, and a worm gear is screwed into the worm gear.By rotating the worm gear with a motor, the rod approaches the filter plate at the rear end at a predetermined speed to prepare for clamping. When the worm gear approaches the worm gear, the impact is eliminated, and when the stroke end is detected by the proximity switch and the rotation of the motor, that is, the worm gear, is stopped from the very slow speed, the rod tip (installed) A hydraulic cylinder with a short stroke moves forward, and the rod applies a predetermined clamping force to the filter plates, and each filter plate is in a clamped state to perform a predetermined solid-liquid separation action, during which the clamping reaction force The worm gear and the stopper in the support body are supported by being fastened to the loft, and a technical measure is taken to maintain the compressed state without stroke back.

<Example> Next, one example of the invention of this application will be described below based on FIGS. 1 to 6.

Reference numeral 1' designates a filter press similar to the conventional one, in which a pair of guide rails 3, 3 are integrally extended from a support 2 which is erected and fixed to a base, and a predetermined number of filter plates 4 are provided. ，
4. The frame can be opened and clamped freely by sliding.

Then, a rod 6' whose tip is directed toward the rear filter plate 4
The rear end portion is loosely inserted into the support body 2, and the crotch portion thereof is provided with a male thread 6′ as shown in the figure, and a short stroke hydraulic cylinder 15 is fixed to the tip portion of the rod 15′.
is in contact with the rearmost filter plate 4.

As shown in FIG. 3, a motor 9 is installed via a bracket 8 on the reciprocating plate 7 whose ends are slidably engaged with both guide rails 3.3, and a pinion 10 provided on the output shaft of the reciprocating plate 7 is connected to the motor 9. is in mesh with the rod 6' and a corresponding gear 11, and the gear 11 has a male thread 61 of the rod 6'.
(A worm gear 12 to be screwed together is integrally provided, and the rod 6' is moved forward and backward by the forward and reverse rotation of the motor 9, so that it can move toward and away from the filter plate 4 at the rear, making it possible to prepare for opening and clamping the frame.) I'm letting you do it.

However, as is well known, due to the mechanism and function of the worm gear, there is a reaction force of the filter plate 4, but the worm gear 1
2, that is, the gear 11 is normally not reversed.

A ring-shaped groove 13 is formed in the portion of the rod 6' that is loosely inserted into the support 2, as shown in FIG. A stopper bracket 14.14 is pivotally supported at its base by a pin 16.16, and as shown in FIG. 14 is fixed with a pin 17 as shown in FIG.
A sled-like arm 20.20 moves back and forth via a link 19 that moves forward and backward by a hydraulic cylinder 18, and the sled-like groove 21 or pin 17 is used to move each stopper 14 to the rod 6 by a cam action.
It is made to be able to freely move forward and backward with respect to the concave groove 13 of '. As shown in Fig. 1.2.5, a short stroke hydraulic cylinder 15 is provided at the tip of the rod 6' and is fixed to the reciprocating plate 7 by a bracket 8'.
' is made to be able to come into contact with and separate from the filter plate 4 at the rearmost portion.

Therefore, the hydraulic cylinder 15 is configured to allow the worm gear 12 to be driven by the motor 9 to rapidly advance the londro' and to perform high-pressure clamping on the rearmost filter plate 4 at the end of the stroke.

Note that the proximity switch 2 is connected to the tip of the hydraulic cylinder 15.
0 is provided and is electrically connected to the control device 21 provided on the advance/retreat plate 7 of the motor 9, so that the monitor 9, that is, the pinion 10. gear 11
．． The rotation of the worm gear 12 is stopped, the hydraulic cylinder 18 is started to operate, and the hydraulic pressure of the hydraulic cylinder 15 is activated.

Furthermore, as shown in FIG. 6, a flange 2 is provided on the end surface of the gear 11.
2.22 is formed to connect the pinion 10 and gear 11. That is,
The worm gear 12 is configured to be able to move forward and backward together with the rod 6'.

In the above-mentioned configuration, each filter plate 4, 4... is opened and a filter cloth (not shown) is interposed in a predetermined position, and when the solid-liquid separation action is performed, first, the motor 9 rotates in the forward direction. Pinion 10. The worm gear 12 rotates via the gear 11, and the rod 6' moves forward at a predetermined speed (rapidly) against the filter plate 4 at the rear end, and starts the clamping action on each filter plate 4.4. enter the state.

At this time, when the rod 6 is in the stroke end state, the proximity switch 20 detects the stroke end and controls the rotation of the motor 9 from a low speed state to a stopped state via the control device 21. Shocking contact can be avoided. During this time, the advancing/retracting plate 7 is moved by the pinion 10 by the 7 langes 22, 22 of the gear 11.
are restrained in the front-rear direction so that they move forward as a unit.

Then, the hydraulic cylinder 18 is actuated via the control device 21 by the action of the proximity switch 20, the link 19 and the arm 20.20 are actuated, and the stopper 14.14 is moved to the rod by the cam action of the groove 21 and the pin 19. 6' groove 1
3, and restricts the movement of the rod 6'.

Then, at the stroke end, the worm gear 12 stops, and the hydraulic cylinder 15 starts operating via the control device 21, and its large output ensures that the filter plates 4, 4...
・Guarantee the clamping condition.

At this time, even if a reaction force is generated on each of the filter plates 4, 4, . . ., the stopper 14, 14 enters the groove and the worm action of the worm gear 12 prevents the rondro' from moving backward.

In this way, the predetermined solid-liquid separation action is performed while the clamping is reliably guaranteed.

Therefore, during clamping, the filter plate 4 at the rear end approaches as quickly as possible and reaches zero speed at the end of its stroke, ensuring a reliable and strong clamping state by the hydraulic cylinder 15. is maintained.

Opening is then done smoothly by reversing the above process.

It goes without saying that the embodiment of the present invention is not limited to the above-described embodiment, and various embodiments may be adopted, such as placing the hydraulic cylinder at a later stage relative to the filter plate at the rearmost end.

<Effects of the Invention> As described above, according to the invention of this application, when pressing the filter plate of a filter press, which basically plays an extremely important role in solid-liquid separation, rapid pressing and opening of the opening stroke can be performed. This has the effect of greatly improving the efficiency of movement, and in addition, the clamping works immediately at the end of the stroke.
The short stroke hydraulic cylinder provides an excellent effect in that the clamped state is reliably maintained.

Moreover, by carving a male thread on the rod that causes the end corrugated plate to undergo the clamping process and threading the worm gear connected to the motor, the rotation of the motor is accelerated, and the rod is pushed rapidly. Not only is it possible to reduce the forward speed of the rod to zero speed before and after the motor stops, the shock at the time of contact is avoided, and durability is improved, which is an excellent effect. Reverse movement due to reaction force is not only prevented by the worm gear, but also by the locking mechanism of the support, which has the effect of maintaining the clamped state doubly.

Therefore, the extremely strong clamping force necessary for the filter press is sufficiently guaranteed by the hydraulic cylinder and worm gear, resulting in the effect of reliable solid-liquid separation, and the advantage that solid-liquid separation is performed as designed. There is.

[Brief explanation of drawings]

1 to 6 are mode diagrams of one embodiment of the invention of this application, in which FIG. 1 is an overall schematic partial cross-sectional plan view, FIG. 2 is a partial cross-sectional side view thereof, and FIG. 3 is a connection between a worm gear and a gear motor. 4 is a partially sectional front view of the lock mechanism, FIG. 5 is a partially sectional front view of the connection between the hydraulic cylinder and the guide rail, FIG. 6 is a partially sectional plan view of the connection between the worm gear and the pinion, and FIG. FIG. 7 is a side view of a filter press according to the prior art. 1'...Filter press 2...Support body 15...Hydraulic cylinder 9...Motor 13-21...Lock 3...Guide rail 4...Corrugated plate 6'...Rod 6 ″...Male thread 12...Worm gear 20...Proximity switch 1st 1'...Filter press 2...Support 15/Hydraulic cylinder 9 Motor 13-2 Drock 3 Guide rail 2nd 4...Wire plate 6'・Rod 6'・・Male thread 12・Worm gear 20・Proximity switch

Claims (5)

[Claims] (1) In a pressing device in which a hydraulic cylinder for pressing is provided via a rod between the open frame of the filter press, the rear end plate of a large number of filter plates that can be freely clamped, and the support body, the rod A pressure filter press characterized in that a male screw is threaded on the worm gear and the worm gear is connected to a motor, and a short stroke hydraulic cylinder is interposed between the worm gear and the rear end plate of the filter plate. Tightening device. (2) The clamping device for a filter press according to claim 1, wherein a proximity switch is provided opposite to the hydraulic cylinder. (3) The filter press clamping device according to claim 1, wherein the worm gear and the hydraulic cylinder are linked to a guide rail of the filter plate. (4) The filter press clamping device according to claim 1, wherein the rod is loosely inserted into the support. (5) The clamping device for a filter press according to claim 4, wherein a stopper of a locking mechanism for the rod is provided within the support body.