JPS62225223A - Device for preventing clogging of powder collector - Google Patents

Abstract

PURPOSE:To obtain the titled device which is miniaturized and large in a filter area by providing both a cyclone connector and a freely transferable device for preventing clogging to the inside of a dust collector provided with filter cloth part having air permeability. CONSTITUTION:In a powder collector 1, a cyclone connector 10 is provided in a dust collector 17 provided with filter cloth 11. Air introduced into the cyclone connector 10 through a powder inflow drum 3 is separated from powder and introduced into the dust collector 17 through an air permeating drum 9. Powder mixed in this exhaust is furthermore filtered by filter cloth 11 and purified air is discharged to the outside of the dust collector 17. Further a vane wheel 28 is rotated by velocity of exhaust discharged through the air permeating drum 9 and pendulums are brought into contact with filter cloth and thereby powder clogged on filter cloth 11 is shaken down. Powder settled on a bottom plate 15 of the dust collector 17 is discharged through a discharge port 13 via a blade wheel body 20 rotated by a motor 21.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for collecting powder that is transported by air. Regarding a clogging prevention device.

PRIOR ART AND THEIR PROBLEMS Generally, when powder is transferred to a suitable location in a remote location, it is customary to use pneumatic transportation.

There are cyclone collectors and bag filter devices as devices for collecting air-transported powder, but the former has advantages such as being simple, having low equipment costs, and not requiring much space for installation. On the other hand, the collection of powder is not perfect, and the powder gets mixed into the exhaust gas and flows out, which has the disadvantage of deteriorating the working environment in the vicinity. On the other hand, the latter bag filter device has the great advantage of perfectly capturing powder and ensuring a sanitary working environment, but it requires high equipment and maintenance costs, and requires a large installation space. It also has drawbacks.

Therefore, as shown in FIG. 5, dust collectors that are simple and have a relatively high powder collection rate have become popular. The dust collector is
A conical dust separation plate 58 with openings at both ends 56 and 57 is disposed inside the dust storage box 54, and a dust separating plate 58 is fixedly installed at the upper end 59 of the dust storage box 54 to separate the air-transported dust. The dust storage box 5 corresponds to the dust separator 58 that collides with the dust separator 58.
A dust inlet 60 is opened in 4, a dust inlet pipe 61 is connected to the dust inlet 60, a support shaft 63 is installed upright on an arm 62 suspended from the inner wall of the upper end 59 of the dust storage box 54, and The upper surface of the bag-shaped filter cloth 65 is placed on the attached ring ring 64, the lower end of the filter cloth 65 is fastened to the outside of the upper end 59 of the dust storage box 54, and the inside of the filter cloth 65 is kept free of dust and air. Due to the configuration of the separation chamber 66, the dust that is air-transported by the exhaust fan is blown into the dust storage box 54 from the dust inflow tube 61, and the dust that has collided with the dust separation plate 58 and decelerated is transferred into the dust storage box 54. The exhaust air that is separated from the dust flows into the separation chamber 66 from the side end 56 of the dust separation plate 58, and the dust mixed in the exhaust air is collected by the filter cloth 65 and cleaned. The air is discharged to the outside of the filter cloth 65, but in this dust collector, the discharged air is separated from the side end 56 of the dust separator 58 via the dust storage box 54. Since the airflow is caused to flow out into the chamber 66, the wind speed inside the dust storage box 54 is increased to guide the once settled dust to the separation chamber 66, thereby increasing the amount of dust collected by the filter cloth 65 and preventing clogging. Because it is not equipped with a filter cloth 65 due to dust adhesion.
Since the dust obstructs the air permeability of the filter cloth 65, it is difficult to frequently brush off the dust that adheres to the filter cloth 65.

In addition, there is a restriction that the speed of the exhaust air flowing through the filter cloth 65 from inside the separation chamber 66 is 5 to 6 cm/sec, or less.
The area of the bag-like filter cloth 65 provided above the dust storage box 54 needs to be large enough to correspond to the amount of air blown into the dust storage box 54, and the location for the filter cloth 65 is also secured separately from the dust storage box 54. was necessary.

Purpose of the Invention The present invention is an improvement in view of the above-mentioned drawbacks, etc., by ensuring a sufficient area for the filter cloth, reducing the installation area of the powder collector, reducing manufacturing costs, and improving the filter cloth. It is an object of the present invention to provide a clogging prevention device for a powder collector, which can reduce the amount of powder adhering to a cloth as small as possible and omit the labor required for brushing off the powder adhering to a filter cloth. Consider it a technical issue.

Means for Solving the Problems In order to achieve the above-mentioned problems, the present invention uses a container provided with an air permeable filter cloth portion as a dust collector, and a conical tube with a powder inflow tube connected to the peripheral wall. A wall board for blocking wind is attached to the end portion of the body on the side where the cylinder diameter is increased, and the end portion of the conical cylinder body with the reduced cylinder diameter is used as an outlet for the powder, and approximately the center of the conical cylinder body is An integrated cyclone collector is formed by protruding a ventilation tube penetrating the wall panel in the shape of a shaft, and the entire cyclone collector and a clogging prevention device that contacts the filter cloth are built into the dust collector. In addition, the operating portion of the clogging prevention device is configured to be movable.

The pneumatically transported powder that flows into the conical cylinder of the cyclone collector from the powder inflow cylinder collides with the outer circumferential wall of the ventilation cylinder and rotates around the inner circumferential wall of the conical cylinder until it reaches the end of the cylinder diameter reduction. In the process, the air separates from the powder and flows out from inside the conical cylinder into the ventilation tube, and the powder flows out from the outlet of the conical solid.

The exhaust gas flowing out from the ventilation tube into the dust collector collects the powder mixed in the exhaust air with the filter cloth of the dust collector, and the clean air separated from the powder is discharged outside the dust collector. The powder collected by the dust collector and the powder flowing out from the outlet of the conical cylinder are merged into the dust collector and allowed to settle.

Powder separated from the air and collected and attached to the filter cloth is brushed off by a clogging prevention device that moves in contact with the filter cloth, and the adhesion of the powder causes 'flII! 1, the powder collection efficiency does not decrease even during unmanned operation.

Example Embodiments of the present invention will be described with reference to FIGS. 1 to 4.

Reference numeral 1 in FIG. 1 indicates the entire powder collector. A wall 16 for cutting off the wind is attached to the end portion 5 of the conical cylinder 4 on the enlarged cylinder diameter side, which connects the powder inflow tube 3 to the peripheral wall portion 2, and the end portion 7 of the conical cylinder 4 has a reduced cylinder diameter. is used as a powder outlet 8, and a ventilation tube 9 extending axially through the wall plate 6 is provided approximately at the center of the conical cylinder 4 to form an integrated cyclone collector 10. The outlet 13 is attached to the bottom opening 12 of the bottom plate 15 having the peripheral wall 14, and the circular bottom plate 15 and the top cover 1 are connected to each other.
A dust collector 17 is formed by attaching both ends of a cylindrical air-permeable filter cloth 11 to the filter cloth 6 and the filter cloth 11 . A blade wheel @18 is rotatably installed through the center of the bottom plate 15, and a plurality of blade pieces 19,
The blade body 20 having... is pivotally attached to the blade axle 18, and the bottom plate 1
A driving pulley 22 is pivotally attached to an electric motor 21 fixedly attached to the blade axle 18, and a belt 24 is wound around the driven pulley 23 and the driving pulley 22, which are pivotally attached to the blade axle 18, to form a powder discharging device. A leak prevention board 25 is attached to the upper part of the outlet 13.

An impeller 28 in which an eccentric shaft 27 is rotatably mounted on a bearing 26 mounted on the upper W16, and a plurality of blades are provided on the eccentric shaft 26.
An operating rod 29° 29 made of a round bar with a bent tip 30 is fixed to the eccentric shaft 26, and the tip 3 of the operating rod 29 is
Attach one side of the coil spring 31 to the
A pendulum 32 is attached to the other end to form a clogging prevention device 33. A hollow upper lid suspension ring 34 is fixedly installed on the upper wall surface of the upper lid 16, a suspended mounting body 35 of the cyclone collector 10 is installed on the L-shaped main column 36, and a fixed pipe is fixedly installed on the base 37. 38, and the other end is inserted into the upper lid suspension ring 34, and the rubber ring attached to the opening 38 of the filter cloth 11 is placed in a position where there is no slack or tension in the filter cloth 11. The powder inlet tube 3 protruding from the top is fixed to the suspension mounting body 35, and the cyclone collector 10 is suspended within the dust collector 17.

The operation of the above embodiment will be explained below.

Powder is sent from a powder supply source to a cyclone collector 10 from a powder inlet pipe 3 via a relay duct. The powder air-transported into the conical cylinder 4 collides with the outer circumferential surface of the ventilation tube 9 and flows down toward the cylinder diameter reduction end part 7 while swirling on the inner peripheral wall surface of the conical cylinder 4. and flows out from the outlet 8. In the process, air is separated from the powder and flows out from inside the conical cylinder 4 into the ventilation tube 9.

The exhaust gas flowing out from the ventilation tube 9 into the dust collector 17 collects powder mixed in the exhaust air with the filter cloth 11 of the dust collector 17, and cleans the air separated from the powder to the outside of the dust collector 17. Discharge. The powder collected by the filter cloth 11 and the powder flowing out from the outlet 8 of the circular cylinder 4 are allowed to settle in the bottom plate 15 of the dust collector 17,
A blade wheel body 20 that rotates the settled powder by an electric motor 21
The powder is taken out from the powder collector 1 through the discharge port 13.

Further, when the dust collector 17 collects powder mixed in the exhaust gas and discharges clean air to the outside of the filter cloth 11, the powder clogging the filter cloth 11 is removed from the exhaust gas flowing out from the ventilation pipe 9. Since the impeller 28 rotates depending on the speed, as the impeller 28 rotates, the pendulums 32, 32 attached to the operating rods 29, 29 via the coil springs 31, 31 move in contact with the filter cloth 11, and the pendulums 32, 32. 32 and the vibration of the coil spring 31, the powder adhering to the filter cloth 11 is brushed off. Therefore, stable collection of powder and separation from clean air is possible at all times, and the clogging prevention operation is continuously performed by exhaust air. It is easy to implement, the equipment is simple, and it is inexpensive.

The feature of this embodiment is that the cyclone collector 10
Since the entire structure is built into the dust collector 16, the dust collector 1
The installation area of 7 has been significantly reduced, eliminating restrictions on the installation location, and the cyclone collector 10 attenuates the flow velocity of the powder and allows it to flow out from the outlet 8 into the dust collector 16, making it possible to reduce the flow rate of the powder slightly. Since the powder mixed in the exhaust gas flowing out from the dust collector 17 is collected by the filter cloth 11 of the dust collector 17, the amount of powder adhering to the filter cloth 11 as clean air is vented is small. In addition, the dust collection device is operated continuously and automatically, without the need for manual labor to shake off the powder adhering to the filter cloth 11, and by utilizing the exhaust air. The collection efficiency of the vessel 17 can be maintained at a good level for a long time.

What is shown in Figures 2 and 3 is the second part of the anti-clogging device.
This is an example. The upper cover 40 of the dust collector 39 containing the cyclone collector 10 is suspended from the main column 36 via a coil spring 41 with the filter cloth 11 slightly slackened, and a bearing stand 42 is attached to the outside of the ventilation tube 9 of the cyclone collector 10. Both ends of the rotating shaft 45 on which the cam 43.43 and the impeller 44 are mounted are mounted on the bearing stand 42, and the other end of the connecting rod 46.46 on which the cam 43.43 is mounted is mounted on the upper cover. 40 to form a clogging prevention device 47.

The effect of the above embodiment is that the rotating shaft 45 rotates together with the impeller 44 due to the exhaust velocity flowing out from the ventilation tube 9, and the rotation of the rotating shaft 45 causes the connecting rod 4 equipped with the cam 43, 43 to rotate.
6.46 moves up and down, and due to the up and down movement of the connecting rod 46.46, the upper cover 40 unstablely vibrates slightly up and down, vibrating the filter cloth 11, and the vibration shakes the powder attached to the filter cloth 11. This is to prevent clogging.

This embodiment also prevents clogging by utilizing the exhaust air from which the powder has been pneumatically transported, and the filter cloth 11 is continuously provided with the clogging prevention effect without requiring any special power. The other configurations and operations are the same as those of the previous embodiment, so detailed explanations will be omitted.

FIG. 4 shows a third embodiment of the clogging prevention device.

A fulcrum shaft 48 is fixed on the wall plate 6 of the cyclone collector 10 built into the dust collector 17, and a bearing 5 provided on the upper lid 16
Insert the opening in the middle of the top cover support rod 49, which has one end rotatably supported on the shaft, into the fulcrum shaft 48,
A clogging prevention device 52 is formed so as to protrude from the working rod 51 and engage the lower end surface 49A of the upper cover support rod 49 and intermittently engage the upper end of the working rod 51. and fulcrum shaft 4
8 is fixed with a regulating body 53 for regulating rotation of the upper cover support rod 49 beyond a predetermined width.

With the above configuration, the operating rods 51 protruding from the blades 19 of the blade vehicle body 2o, which rotate with the operation of the electric motor 21, intermittently touch the lower end surface 49A of the upper cover support rod 49. Due to this engagement, the upper cover support rod 49 rotates about the fulcrum shaft 48, and as the blade wheel body 20 rotates, the working rods 51... and the lower end surface 49A of the upper cover support rod 49 engage with each other. The joint separates, and the reaction causes the upper lid support rod 49 to vibrate from side to side about the fulcrum shaft 48, vibrating the filter cloth 11 attached to the upper lid 16, and shaking off the powder adhering to the filter cloth due to the vibration. Restores aeration.

In this embodiment, the working rods 51 are protruded from the blades 19 of the blade wheel body 20 rotated by the electric lI 21.
・Since the filter cloth 11 is forcibly vibrated via the upper cover support rod 49 to prevent clogging, clogging can be reliably prevented and powder can be collected stably and clean air can be exhausted. can.

Note that any number of upper lid supporting rods 49 may be installed, and the upper lid supporting rods 49 may be biased in one direction by a spring.

Regarding the packaging in each of the above embodiments, after storing the filter cloth 11 in the bottom plate 15, the top cover is attached to the bottom 5I1.
115 and packaged together with the cyclone collector 10 or separately, the volume can be significantly smaller than that of a packaged dust storage cylinder shown in FIG. 5, and packaging and transportation costs can be reduced.

Effects of the Invention As explained above (according to the present invention, the cyclone collector separates the powder transported by air from the air, the powder flows out to the dust collector, and the powder mixed in the exhaust gas is collected by the dust collector). The clean air is collected by the filter cloth of the dust collector, and the clean air is discharged outside the dust collector.
A cyclone collector is built into the dust collector so that the collected powder joins the powder flowing out from the cyclone collector, ensuring the collection of powder and making the surrounding workplace sanitary and dust-free. The work environment can be improved, and the clogging prevention device installed in the dust collector can brush off the powder that has clogged the filter cloth, eliminating the trouble of cleaning it off and reducing filtration performance due to powder clogging. This has the advantage of simplifying the device, reducing manufacturing costs, and reducing the installation area.

[Brief explanation of drawings]

Figures 1 to 4 show embodiments of the present invention, with Figure 1 being a side sectional view showing the entire device, Figure 2 being a side sectional view of another embodiment, and Figure 3 showing the main parts of the same. An enlarged portion, FIG. 4 is an overall side view showing still another embodiment, and FIG. 5 is a side view of a known dust collector. 1... Powder collector 2... Peripheral wall portion 3... Powder inflow cylinder 4... Conical cylinder 5... Terminal part
6... Wall plate 7... Cylinder diameter reduction terminal part 8
... Outlet 9 ... Ventilation tube 10 ... Cyclone collector 11 ... Filter cloth 12 ... Bottom opening 13 ... Powder discharge port 14 ... Peripheral wall 1
5...Bottom plate 16...Top lid 17...Dust collector 18...Blade axle 19...Curved piece
20...Winged vehicle body 21...Electric IN
22... Drive pulley 23... Passive pulley 24
... Belt 25 ... Air leakage prevention plate 26 ... Bearing 27 ... Eccentric shaft 28 ... Impeller 29 ...
... Operating rod 30 ... Tip 31 ... Coil spring 32 ... Pendulum 33 ... Clogging prevention device
34... Top lid suspension ring 35... Hanging mounting body
36...Main pillar 37...Base 38...
・Fixed pipe 39...Dust collector 40...Top lid 4
1... Coil spring 42... Bearing stand 43...
Cam 44... impeller 45... rotating shaft
46... Connecting rod 47... Clogging prevention device 4
8...Fully shaft 49...Top cover support rod 49A...
・Lower end surface 50...Bearing 51...Working rod 52...Clogging prevention device 53...Regulating body 54...
・Dust storage box 56.57...Side end 58...
Five dust separators...Top end 60...Dust inlet 61...Dust inlet pipe 62...Arm
63... Support shaft 64... Ring ring 65.
... Filter cloth 66 ... Separation chamber

Claims (3)

[Claims] (1) A container equipped with a breathable filter cloth part is used as a dust collector, and a wall that blocks wind is placed at the end of the conical cylinder with a powder inlet cylinder connected to the peripheral wall on the enlarged diameter side. A disk is attached, the diameter-reduced end portion of the conical cylinder is used as an outlet for the powder, and a ventilation cylinder is protruded approximately in the center of the conical cylinder, penetrating the wall plate in the shape of an axis. The cyclone collector is formed into an integrated cyclone collector, and the entire cyclone collector and a clogging prevention device that contacts the filter cloth are built into the dust collector, and an operating part of the clogging prevention device is formed to be movable. A clogging prevention device for a particle collector, characterized by: (2) The clogging prevention device is formed to be moved by the exhaust gas flowing out from the ventilation tube.
1) A clogging prevention device for a powder collector as described in item 1). (3) The clogging prevention device according to claim (1), wherein the clogging prevention device is connected in relation to a granule discharge device installed inside the bottom plate of the dust collector.