JPH02233409A - Method and device for controlling operation of bucket convey0r - Google Patents

Abstract

PURPOSE:To prevent a device from being broken by inclining and disposing movably a conveyor device by an inclined rail and providing a balance weight slightly heavier than the conveyor device in a direction for moving diagonally and upward the conveyor device so as to move the device diagonally upward at the time of excessive resistance, in the title conveyor for sedimentary sand. CONSTITUTION:A bucket 4 scoops up sedimentary sand and moves diagonally upward and drains and dehydrates and throws it in a chute 9 during this period. In this instance, when the hardening of the sedimentary sand is advanced too much and scooping up resistance by the bucket 4 is increased, the reaction of the resistance acts on the bucket 4 to move the bucket diagonally upward in an opposite direction. Then, this force is applied to a balance load 9, a conveyor device K is moved diagonally upward along a guide rail 5 through rollers 1b and the bucket 4 acts on the uncured soft surface layer of the sedimentary sand. According to this constitution, the device can be protected.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a control method and equipment for a bucket conveyor that scoops up settled sand, drains it, and dewaters it, so that the settled sand can be scooped up in an appropriate state.

[Conventional technology]

In draining and dewatering using a conventional bucket conveyor, the bucket conveyor is installed at an angle and its lower end is placed in the sedimentation tank, and the bucket located at the lower end scoops up the settled sand and moves it to the inversion section at the upper end. It was meant to be drained.

[Problem to be solved by the invention]

However, due to the conditions in which the flocculant is used or the sediment is left for a long time, a situation may occur where sedimentation in the sedimentation tank progresses too much and the sedimentation layer becomes too hard. At this time, since the bucket conveyor system is fixedly installed, the movement of the buckets is blocked, and as a result, the conveyor drive system idles, resulting in damage to the buckets and conveyor system.

[Means to solve the problem]

Therefore, the present invention prevents damage by moving the conveyor device itself when the sediment layer in the sedimentation tank becomes too hard to scoop out the sediment sand with a bucket. Therefore, in the bucket conveyor for scooping up settled sand and draining and dewatering it with a bucket, the conveyor device is tiltedly arranged with the conveyor device supported by a guide member, and the balance weight of the conveyor device is a little lighter than the weight of the conveyor device. In addition to the upward movement of the device, when the settling state of the settled sand progresses and excessive force is required to scoop it up with the bucket, the reaction force of the bucket due to the resistance of the settled sand is added to the balance load, causing the Conveyor II to It is designed to move diagonally upward along a guide member. The device invention also includes a bucket conveyor device in which a bucket for scooping up settled sand, draining and dewatering it is attached to an endless material, a guide member for arranging the conveyor device at an inclination and guiding its incline movement, and The structure includes a balance mechanism that applies a light weight to the conveyor device in the direction of its upward movement. In addition, a balance weight may be suspended from the rear end of the conveyor device via a traction material such as a wire to form a balance mechanism. Alternatively, the guide member may be an inclined rail, and the rollers connected to the conveyor device may be engaged with the inclined rail to be in a rolling state.

[For use]

According to the method invention, the settled sand is scooped up with a bucket and drained and dewatered while being moved, but as the settling state of the settled sand progresses too much and excessive force is required to scoop it up with the bucket, the hardened sediment is removed. Since the reaction force of the bucket due to the resistance of the sand is applied to the balance load 1 in the diagonal upward direction, the bucket is moved diagonally upward along the conveyor device or guide member. In other words, the conveyor device itself moves in a direction away from the sedimentation layer, and the bucket easily scoops up only the settled sand at the top of the sedimentation layer, thereby preventing damage to the bucket and conveyor device. Further, in the device invention, the guide member positions the conveyor device in an inclined manner and guides the inclined movement of the conveyor device. The conveyor device is moved diagonally upward along the guide member by the reaction force of the bucket due to the resistance of the settled sand that has become too hard.

【Example】

The method invention will be explained below with reference to embodiments of the device invention. In the apparatus of this example shown in FIGS. 1 to 3, K is a conveyor device in which an endless belt 3 is wound between rotary bodies 2.2 at both ends attached to rotatable plates by supports 1.1 on both sides. The bucket 4 is attached to the belt 3. In addition,
The rotating body 2 is rotated by connecting a gear 2a to a motor (not shown) fixed to the support 1, and their driving is the same as in the conventional configuration. The characteristic configuration of this example is that the conveyor device K is movably supported by a guide member. That is, a guide rail 5 fixed to the frame of the sedimentation tank S is installed in an inclined manner on both sides, and a roller ib is provided at the tip of an arm la protruding from a support l, and the roller lb is engaged with the guide rail 5. By doing so, the conveyor device K can be arranged at an angle and can be moved at an angle. Note that the roller 1b is stopped in the downward direction by coming into contact with the stopper 5a at the lower end of the guide rail 5, and normally the lower end side of the conveyor system IK is located in the settling tank S at this stopping position. . In addition, a fixed shaft 6 is mounted on the end of the fixed frame gA, and a guide wheel 6 is mounted on the fixed shaft 6 between the support l and the guy K rail 5.
A is attached. Then, one end of the wire 7 is locked to the outside of each support 1 of the conveyor equipment WIK, and
A balance weight 8 is suspended from the other end of a wire 7 hung on a guide ring 6a. The balance weight 8 has a weight slightly lighter than the weight of the conveyor device K itself. Note that 9 is a chute for settling sand fixed to the frame, and has a discharge hole 9a at its lower end. Next, we will explain the effect of this example. First of all, the gear 2a is rotated by the drive of the motor as in the conventional case.
The bucket 4, which moves slowly, scoops up the settled sand that has flowed into the supply port Sa, and is drained and dewatered while moving diagonally upward, and the settled sand falls into the chute 9 at the inverted section at the other end and is discharged. Ru. However, due to the conditions in which the flocculant is used or the sediment is left for a long period of time, sedimentation in the sedimentation tank may proceed too much and the sediment layer may become too hard, and excessive force may be required to scoop it up with a bucket. As the sedimentation layer hardens, the reaction force caused by the resistance of the hardened sedimentation sand acts to cause the bucket 4 to move diagonally upward in the opposite direction, and this adds to the balance load, so the conveyor device X moves through the rollers lb. They are forced to move diagonally along the guide rail 5 (see Figure 4).
. That is, the conveyor device K itself moves in the direction away from the sedimentation layer, and the bucket 4 always works to scoop up only the unhardened sedimentation sand at the top of the sedimentation layer, depending on the degree of hardening of the sedimentation sand. It is. This prevents damage to the bucket 4 and conveyor device K. When the hardened settled sand is discharged and removed, the conveyor device K moves downward under its own weight until the rollers lb abut against the stopper 5a and returns to its original position. Further, cleaning or maintenance of the sedimentation tank S can be easily and smoothly carried out by adding additional weight to the balance weight 9 and carrying out the conveyor device K out of the sedimentation tank S as shown by the imaginary line in Fig. 4. Although this example is configured as described above, the present invention is not limited to this. In the device invention, regardless of the configuration of the guide member for arranging the conveyor device at an inclination and guiding the inclination movement thereof, as shown in FIG. Good too. Further, the means for applying the balance load in the upper direction of the conveyor device K may be any suitable means, such as a structure in which the conveyor device K is suspended by a tension spring 12 as shown in FIG. Furthermore, the configuration of the bucket and conveyor is arbitrary.

【Effect of the invention】

According to the method invention, the conveyor device itself can move away from the sedimentation layer depending on the degree of hardening of the sedimentation sand, so the bucket always scoops up only the unhardened sedimentation sand in the sedimentation layer, and no excessive force is applied. Therefore, it is highly effective in preventing damage to buckets and conveyor equipment. Furthermore, in the device invention, the movement of the conveyor device can be smoothly and quickly controlled by the balance mechanism and guide member. In the structure described in claim W43, since the balance weight is suspended to form a balance mechanism, the operation of the conveyor device is ensured. The device described in claim 4 has a simple configuration and is therefore an inexpensive piece of equipment.

[Brief explanation of the drawing]

The drawings show an embodiment of the device invention, and Fig. 1 is a partially cutaway side view, Fig. W4Z is a plan view thereof, and Fig. 3 is a blue side view with the chute part 7 removed. Fig. 4 is a side view showing the moving state of the conveyor device. Figure 5 is a side view of another example. Figure 116 is a side view of the main parts of another example of the balance mechanism. : support, 1b. lO: Roller, : Rotating body, 3: Belt 5: Bucket, 5: G/F rail, a: Stop collar, 6a: Guide wheel, : Wire 2 8: Balance weight, l: Guide member, l2: Spring, : Conveyor Apparatus, S: Sedimentation tank.

Claims (4)

[Claims] (1) In a bucket conveyor that scoops up settled sand and drains it with a bucket, the conveyor device is supported by a guide member and arranged at an angle, and a balance load that is slightly lighter than the weight of the conveyor device is applied in the direction of the conveyor device's oblique upward movement. In addition, when the settling state of the settled sand progresses and excessive force is required to scoop it up with the bucket, the reaction force of the bucket due to the resistance of the settled sand is added to the balance load, causing the conveyor device to tilt along the guide member. A method for controlling the operation of a bucket conveyor characterized by upward movement. (2) A bucket conveyor device in which a bucket for scooping up settled sand, draining and dewatering it is attached to an endless material, a guide member for tilting the conveyor device and guiding its tilt movement, and a weight slightly lighter than the conveyor device. 1. An operation control device for a bucket conveyor, comprising: a balance mechanism that applies a load in the diagonally upward movement direction of the conveyor device. (3) The bucket conveyor operation control device according to claim 2, wherein the balance mechanism is formed by suspending a balance weight from the rear end of the conveyor via a traction member such as a wire. (4) The bucket conveyor operation control device according to claim 3, wherein the guide member is an inclined rail, and rollers connected to the conveyor device are engaged with the inclined rail to be in a rolling state.