JPH042905Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This invention relates to a powder leveling device.

(Prior art) In water works, etc., the dust (powder) collected by a dust collector is temporarily stored in a hopper, and a storage box is set under the hopper's discharge port. Dust is discharged from the discharge port into the storage box. When the inside of the storage box becomes full of dust, the storage box is carried out and disposed of, and an empty storage box is set under the outlet of the hopper.

(Problem that the invention attempts to solve) However, when discharging dust from the above-mentioned hopper outlet into the storage box, if a certain amount of dust accumulates inside the storage box, the dust will form a mountain, so it cannot be done manually. It was necessary to level out the dust by using a vacuum cleaner, and this work was complicated.

(Means for solving the problem) This invention was made to solve the above problem, and its gist is to level out the powder and granules discharged from the hopper outlet and accumulated in the storage box. The device includes: an actuating member that is movably provided across the hopper discharge port and the opening of the storage box to level the powder; a driving device that moves the actuating member; A powder and granular material leveling device comprising: a detection device that is provided near the opening and detects the powder and granular material collected in the storage box using light and activates the drive device. It is in.

(Function) When the powder and granules discharged from the outlet of the hopper accumulate in the storage box to some extent, the detection device detects the collected powder and granules in a mountain shape without affecting the inside of the storage box. , the optical detection actuates a drive which moves the actuating member across the hopper outlet and the storage box opening. As a result, the mountain-shaped powder and granules are automatically smoothed out, and the powder and granules are accumulated until the storage box is filled with powder and granules.

(Example) Hereinafter, an example of this invention will be described based on the drawings from FIG. 1 to FIG. 7.

Reference numeral 1 in the figure is a powder leveling device. This powder and granular material leveling device 1 is for leveling the dust (powder and granular material) 7 discharged from the discharge port 4 of the hopper 3 of the dust collector 2 and accumulated in the storage box 5, for example. An operating member 10 that performs work and an air cylinder (drive device) that drives this operating member 10
20, and three sets of transmission type photoelectric switches (detection devices) 3 for detecting dust 7 accumulated in the storage box 5.
1, 32, and 33. In addition, storage box 5
is set on a conveyor 8 disposed below the hopper 3, and is conveyed intermittently. The hopper 3 has a built-in damper (not shown), and this damper is opened and closed by driving an air cylinder 9 arranged on the outer surface of the hopper 3.

The actuating member 10 has a substantially U-shape formed by a pair of links 11 and 12 and a leveling plate 13 fixed between the tips of the pair of links 11 and 12. The base ends of each of the links 11 and 12 are connected to U-shaped brackets 14 and 1 fixed to the upper part of the outer peripheral surface of the hopper 3.
4 via pins 15, 15 so as to be rotatable.

At the center of the cylinder portion 20a of the air cylinder 20, a pin 23 is inserted between a pair of L-shaped brackets 22, 22 fixed to a support member 21 having a U-shaped longitudinal section.
It is rotatably supported by 23. The support member 21 is fixed to the dust collector 2 or hopper 3 via a frame (not shown). One cylinder chamber of the air cylinder 20 is connected to a compressor 25 via an electromagnetic switching valve 24, so that compressed air from the compressor 25 causes a piston rod 27 to protrude. A return spring 27 is provided between a predetermined location of the piston rod 27 of the air cylinder 20 and one end of the cylinder portion 20a.
A is provided, and this return spring 27a causes the piston rod 27 to retreat when the cylinder chamber is opened to the atmosphere via the switching valve 24. Further, the cylinder portion 20 of the air cylinder 20
A pair of proximity switches 26, 26 are provided on both sides of a. These pair of proximity switches 2
6 and 26 cooperate with the piston in the cylinder portion 20a to control switching of the electromagnetic switching valve 24, and automatically reciprocate the piston rod 27 by a predetermined stroke. A nut joint 28 is fixed to the tip of the piston rod 27. This nut joint 28 rotatably supports the one link 11 midway through a pin 29. This allows the pair of links 11 and 12 to rotate back and forth about the pins 15 and 15 by driving the air cylinder 20.

Each of the photoelectric switches 31, 32, 33 includes light projectors 31a, 32a, 33a, and light projectors 31a, 3
2a, 33a facing light receivers 31b, 32b,
33b. Each floodlight 31a,
32a, 33a and light receivers 31b, 32b, 33
b is the dust collector 2 or the U hanging from the ceiling.
They are fixed to the lower ends of the letter-shaped frames 34, and are located slightly above and outside the opening 6 of the storage box 5 set directly below the hopper 3. Each photoelectric switch 31, 32, 3
3 are arranged to detect dust 7 at both ends and the center of the opening 6, respectively.

In the above-mentioned configuration, when the dust 7 discharged from the discharge port 4 of the hopper 3 of the dust collector 2 accumulates in the storage box 5, it forms a mountain with the peak located directly below the discharge port 4, as shown in FIG. to do. Then, when the top of the mountain-shaped dust 7 becomes higher than the storage box 5, the optical path of the projector 32a of the photoelectric switch 32 located at the center of the opening 6 of the storage box 5 changes from the mountain-shaped dust 7. It is blocked at the top. The light receiver 32b detects this and turns on a normally open switch interposed between the switching valve 24 and the power source to start the switching operation of the switching valve 24. Then, the air cylinder 20 is actuated and the actuating member 10 rotates around the pin 15, so that the leveling plate 13 of the actuating member 10 scrapes the central top of the dust 7 and scrapes both ends of the storage box 5. Dust 7 is created in order to move in the direction. At this time,
The dust 7 is continuously discharged. Then, as shown in FIG. 6, when the light path of the projector 32a is unblocked, the operation of the air cylinder 20 is stopped.

In this way, when the operation member 10 repeats the leveling operation of the dust 7, the dust 7 bulges at both ends of the opening 6 and forms two peaks, as shown in FIG. Light projectors 31a, 3 of photoelectric switches 31, 33 located at both ends above section 6
The optical path of 3a is blocked by the top of the dust 7. The light receivers 31a and 33a detect this, and the alarm lamp 3
5 is turned on to notify that the inside of the storage box 5 is full of dust 7, and the air cylinder 9 is driven to close the damper and stop discharging the dust 7. At the same time, the conveyor 8 is operated to carry out the full storage box 5, and the empty storage box 5 is automatically set directly below the discharge port 4 of the hopper 3. Then, while the new dust 7 is being discharged, the full storage box 5 is discharged to the outside by an input or by another conveyor, and an empty storage box 5 is replaced.
Place it on one end of the conveyor 8.

In addition, when carrying out the full storage box 5, 2
A mountain of dust 7 is attached to the photoelectric switches 31 and 33 at both ends.
Although it comes into contact with and adheres to the projectors 31a and 33a,
By blowing compressed air or the like onto the windows of the projectors 31a, 33a to remove dust, the photoelectric switches 31, 33 always operate stably.

In this way, since the dust 7 can be leveled automatically, manual leveling work, which is conventional, is not required, and the number of man-hours can be reduced. Additionally, in the past, if the leveling work is forgotten, the discharge port 4 of the hopper 3 becomes clogged with dust 7 and the dust 7 cannot be discharged.
The inside of the storage box 5 becomes full of dust 7, making it impossible for the dust collector 2 to collect dust from inside the woodworking shop, etc. However, in this embodiment, a certain amount of dust 7 accumulates inside the storage box 5, and the dust 7 piles up. The photoelectric switch 32 detects when the work member 10 is
Since the mountain-shaped dust 7 is smoothed out, the dust 7 does not reach the discharge port 4 of the hopper 3, so the discharge port 4 of the hopper 3 is not clogged and the dust 7 can be discharged. As a result, the dust collector 2 can constantly collect dust in the woodworking shop, etc., and its operating rate is improved.

This invention is not limited to the above-mentioned embodiments, and various embodiments are possible. For example, instead of the actuating member 10 rotating around the pin 15, a leveling plate can be connected directly to the piston rod of the air cylinder and horizontally reciprocated above the opening 6 of the storage box 5, thereby removing the dust 7. You may also perform break-in work.

Further, the conveying direction of the conveyor 8 may be parallel to the moving direction of the actuating member 10. In this case, when the full storage box 5 is taken out, two piles of dust 7 are generated.
It is possible to prevent the photoelectric switches 31 and 33 at both ends from contacting and adhering to the photoelectric switches 31 and 33.

Furthermore, an alarm buzzer may be used in place of the alarm lamp of the detection device, and the granular material is not limited to dust, but may also be grains, coal, sand, etc.

(Effects of the invention) As explained above, in this invention, an operating member that crosses between the discharge port of the hopper and the opening of the storage box, a driving device thereof, and a detection device for powder and granular material are provided. This makes it possible to automatically level out the powder and granules that have accumulated to some extent in the storage box and become mountain-like, without requiring extra energy. the result,
Unlike the conventional method, manual leveling work is no longer necessary, and powder and granules can be stored until the storage box is full of powder and granules.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
Figure 1 is a perspective view showing how dust is collected in the storage box, Figure 2 is a front view of the dust leveling device, and Figure 3 is a front view of the dust leveling device.
The figure is a sectional view taken along the line - in FIG. 2, and FIGS. 4 to 7 are diagrams sequentially showing the state in which the inside of the storage box becomes full of dust. 1...Powder leveling device, 3...Hopper, 4
...Discharge port, 5...Storage box, 6...Opening, 7...
...Dust (powder), 10... Operating member, 20...
Air cylinder (drive device), photoelectric switch (detection device).

Claims (1)

[Scope of utility model registration request] The powder and granules discharged from the hopper discharge port and accumulated in the storage box are movably disposed in the apparatus so as to cross between the hopper discharge port and the opening of the storage box. an actuating member that smooths the body; a drive device that moves the actuating member;
A powder particle characterized in that it is equipped with a detection device provided near an opening of the storage box to detect the powder particles accumulated in the storage box with light and activate the drive device. Body conditioning device.