JPH03193166A - Sieving machine having intermittent dumper - Google Patents

Abstract

PURPOSE:To contrive the sieving of the material difficultly separable with efficiency by a method wherein the sieve of a sieving machine is provided with an intermittently actuatable dumper which permits the sieving operation to be performed while the material being sifted out is staying on meshed openings and moving thereon. CONSTITUTION:A continuous sieving machine has a sieve 1 with an opening at its rear side mounted on the machine stand 2 and the sieve 1 is provided with an intermittently actuatable dumper 3. By operating this dumper 3, the sieving operation is performed by one mode wherein the material being sifted out is separated staying only within the meshed openings 12 of the sieve 1 confined by barriers and by the other mode wherein the material is sifted out while it is moving on the sieve with the barriers released on an alternate basis. As a result, not only the material easily separable but also the one difficultly separable can be sifted out efficiently.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a continuous sieving machine, and particularly to one in which an intermittent damper is attached to the sieve to adjust the throughput and residence time of the material to be processed. It is.

(Prior art) A sieve machine is a device that allows the material to be processed to pass through the sieve plate by reciprocating a sieve plate formed using a wire mesh or perforated plate having meshes of appropriate size. It is separated into those that do not pass through and those that do not pass through.

In other words, by reciprocating the sieve, the material to be processed is stirred on the sieve plate, and objects that are smaller than the mesh or that are thinner than the mesh and are in a position to penetrate the mesh pass through the sieve. divided.

Therefore, for example, a material to be processed, such as soybeans, which has a smooth surface and easily slides over each other, and which has a shape close to a sphere, can pass through the mesh easily and is sieved in a short time, but particles such as green tea can Things that easily cooperate or intertwine with each other,
Items longer than the diameter of the mesh are difficult to sieve.

Therefore, when sieving such materials, the time required is increased and the number of reciprocating movements of the sieve is increased to increase the chances that the materials will separate from each other and penetrate into the mesh. It is necessary to do so.

(Problem to be solved by the invention) There are two types of sieving machines: batch type and continuous type.

In a batch type sieving machine, the sieve is shaped like a box, and the material to be processed is placed in it and sieved, and after each sieving, the reciprocating movement is stopped to collect the material left behind from the sieve. A new object to be processed is placed in it. Therefore, this sieving machine can adjust the amount of processed material to be put into the sieve as appropriate, and the processing time can be adjusted according to the amount and the difficulty of sieving. On the other hand, when processing materials that are easily sieved, the downside is that the reciprocating movement must be stopped more frequently due to the short processing time, which inevitably reduces work efficiency. be.

On the other hand, in a continuous sieving machine, the sieve is slightly inclined, and the material to be processed is continuously fed to the upwardly inclined side and sieved, and the material remaining on the sieve is removed from the downwardly inclined side. The work can be done more continuously by dropping it from the ground. Therefore,
This sieving machine cannot be applied to a material that is difficult to sieve and cannot be completely sieved before it reaches the downwardly inclined end. Of course, if you reduce the inclination angle of the sieve, the moving speed of the material to be processed will decrease, which will extend the processing time accordingly, but this sieve separator is limited in the amount of material to be processed, and if it If the amount of material to be treated is supplied, the excess material will flow down the sieve surface without being sieved, resulting in a significant reduction in the amount of material to be processed, making it completely impractical.

SUMMARY OF THE INVENTION An object of the present invention is to provide a means for efficiently processing not only objects that are easily sieved but also objects that are difficult to sieve and require a processing time longer than a certain level.

(Means for Solving the Problems) In order to achieve the above object, the sieving machine equipped with an intermittent damper according to the present invention is different from the conventional continuous sieving machine in that it has an intermittent damper on the sieve surface of the sieving machine. When the sieve is contained and lowered, the sieve performs the same function as the sieve of a batch type sieve machine, and when the sieve is lowered, it performs the same function as a continuous sieve machine. .

(Function) The sieve separator equipped with an intermittent damper according to the present invention has an intermittent damper attached to a sieve with an open rear side, and when the damper is lowered, the sieve surface is partitioned and the sieve of a batch type sieve separator is It exhibits the same function as that of the continuous sieve machine, making it possible to process the desired amount of material for the desired time. Demonstrate.

(Example) Hereinafter, a sieving machine equipped with an intermittent damper according to the present invention will be specifically described based on an illustrated example.

Fig. 1 is a partially cutaway side view of the sieve machine, and Fig. 2 is a vertical cross-sectional view with the side frame of the sieve lifted up.
2 is a machine base, and 3 is a damper 3. The machine stand 2 supports the sieve 1 at an appropriate inclination angle and is adapted to move it back and forth, and the damper 3 is attached to the sieve 1 to partition the sieve surface.

To explain in more detail, the machine stand 2 has an underframe 21 and a support frame 22.
, and a swinging frame 23, and a receiving plate 24 is attached to the swinging frame 23 for receiving the material to be processed that has been sieved by the sieve 1. That is, the tip of the support frame 22 is pivotally connected to the underframe 21 via a pivot 25, and the rear part is accommodated in the underframe 21 via the tilt angle adjustment device 4, so that the support frame 22 can be tilted at an appropriate angle. It is now possible to do so.

Several support wheels 26 are attached to the top of the support frame 22, on which the swing frame 23 is placed, and both are connected by a reciprocating device 5 so that the swing frame 23 It is configured to reciprocate on the support frame 22.

Note that there are no particular limitations on the mechanism or structure of the inclination angle adjustment device 4. In short, it is sufficient if the distance between the support frame 22 and the underframe 21 can be adjusted appropriately, and in the figure, as an example, a rack gear 41 is housed in the support frame 22, and a pinion gear 42 is installed in the underframe 21. is attached and meshed with the rack gear 41, and a worm tooth mechanism 43 is connected to the pinion gear 42, and the rack gear 41 is raised and lowered by operating a handle 44 and rotating the pinion gear 42. .

The same applies to the reciprocating device 5, and there are no particular limitations on one mechanism or structure. In the figure, a crank mechanism is used as an example.

The sieve 1 is almost the same as that of a normal continuous sieve machine, and consists of a side frame II with an open rear side and a sieve plate 12, and is housed in a swinging frame 23. It reciprocates in accordance with the reciprocating motion of the swing frame 23.

In addition, in the illustrated sieve 1, a side frame 11 and a sieve plate 12 are formed separately, and the side frame 11 is housed in a swinging frame 23 by a hinge 13, and the sieve to be sieved is separated. The sieve plate I2 can be replaced depending on the type and material of the processed material.

A damper 3 is housed in at least one location of the sieve 1 configured in this manner.

This damper 3 partitions the sieve and allows the material to be processed on the sieve plate 12 to stay there for a certain period of time, so that it functions as a batch-type sieve, and by releasing the partition, it functions as a continuous-type sieve. It is designed to operate intermittently on the sieve plate 12.

The figure shows an example in which a plurality of dampers 3 are operated synchronously.A mounting shaft 31 is provided on the upper part of the side frame 11, and a damper 3 is fixed to each of the mounting shafts 31. 32 is fixed. and arm 32
The upper end is connected to a connecting rod 33. Further, the side frame 11 is equipped with a drive motor 34, and this drive motor 3
4 and a connecting rod 33 are linked by a crank mechanism 35, and when the drive motor 34 is driven, its rotational motion is transmitted to the connecting rod 33 via the crank mechanism 35, which reciprocates to the surface. This is transmitted to the damper 3 via the arm 32 and the mounting shaft 31, and this is connected to the mounting shaft 31.
It moves up and down around the center.

When the object to be processed is to be sieved, the inclination angle of the swing frame 23 is first adjusted depending on the type, material, etc., and the reciprocating device 5 is activated to reciprocate the sieve 1. Then, a predetermined amount of the material to be treated is supplied from a material feeder (not shown) to the starting end of the sieve 1, and the drive motor 34 is driven to move the damper 3 up and down at a preset intermittent cycle.

Then, while the damper 3 is lowered, the material to be treated is stopped from moving and remains on the sieve plate I2 to undergo sieving treatment, and when the damper 3 is raised, it moves toward the rear end side.

In this way, the material to be treated undergoes sieving treatment while repeating retention and movement each time the damper 3 moves up and down. The material that passes through the sieve plate 12 is sieved and the receiver falls onto the plate 24 and is taken out of the machine, while the material that does not pass through the sieve plate I2 moves to the rear end of the sieve 1 and eventually It falls from there and is taken out.

(Effects of the Invention) As detailed above, the present invention is a sieve similar to the conventional continuous sieving machine, in which an intermittent tongue 4° bar is attached to the sieve, and when the damper is lowered, the sieve 1 is The appearance is in the form of an upper basin, and the movement of the material to be processed is dammed, and it remains on the sieve plate and undergoes sieving processing, so the sieve performs the same function as a sieve in a batch-type sieving machine. . and,
When the damper is raised, the material to be treated moves toward the rear end of the sieve, and when it is lowered, the material to be treated remains at that position again and undergoes sieving treatment.

Therefore, by appropriately setting the down time and up time of the damper, it is possible to sieve an appropriate amount of material for a predetermined period of time. Even materials that are difficult to sieve can be efficiently processed.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of a sieving machine according to the present invention, FIG. 2 is a front view showing the essential parts of the same, and FIG. 3 is a longitudinal cross-sectional view showing a state in which the side frame is swung up. 1. Sieve 11, side frame 12 sieve plate 2: machine stand 21: stand frame 22: support frame 23: swing frame 24: support plate 25, pivot 26, support ring 3, damper 31: mounting shaft 33, connection Rod 32: Arm 34: Drive motor 35: Crank mechanism 4: Inclination angle adjustment device 41 Double gear 43: Ohm gear mechanism 5: Reciprocating device pinion gear

Claims (1)

[Claims] This is a continuous sieve separator consisting of a sieve with an open rear side attached to the machine base, and a damper that operates intermittently is attached to the sieve.By operating the damper, the sieve is partitioned and the material to be processed is separated. A sieving machine equipped with an intermittent damper, characterized in that sieving processing is carried out by allowing the material to remain on a sieve plate, and sieving processing is carried out while the partition is released and the material to be processed is moved.