JP2002355611A - Vibration sieving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration sieving machine eliminating such a tendency that foreign matter in a particulate raw material is stagnated on the central part of a sieve net, making it hard to generate the clogging of the central part of the sieve net, making the sieve net hard to be loosened and improving the transport efficiency of the particulate raw material without frequently interrupting air transport by reducing the replacement or repairing of the sieve net. SOLUTION: The particulate raw material transported by air is supplied to an upper chamber 16a from a supply port 17 and passed through the sieve net 15 to be sent to a lower chamber 16b and discharged from a discharge port 18 to be recovered. The foreign matter such as dust or the like in the particulate raw material not passed through the sieve net 15 is discharged from a discharge port 19 by air pressure due to the supply only of air to be removed after the supply of the particulate raw material is once stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided in a pneumatic transportation line for powdery and granular materials such as foods and chemicals, and removes foreign substances such as dust mixed in foods and chemicals during pneumatic transportation. The present invention relates to a vibrating screen machine for performing

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, for example, a vibrating device 52 of this type is provided with a vibrating device 52 installed inside a cylindrical gantry 51 and a receiving spring 53 above the gantry 51. It is assumed that the sieve body 54 is installed.

[0003] The vibrating device 52 comprises a vibrating body 55 fixed below the sieve body 53 and a motor 56 for vibrating the vibrating body 55.

[0004] The sieve body 54 has a lid 58 placed on top of a cylindrical body 57 composed of a plurality of cylindrical frames 57a.
A sieve mesh 59 is stretched horizontally inside the cylindrical body 57 and divided into upper and lower two chambers 60a and 60b. In the center of the lid 58, a supply port 61 for the powder material is provided, and the upper chamber 60a is provided.
A discharge port 62 for foreign matter such as dust is provided on a side portion of the cylindrical body 57. In addition, a discharge port 63 for the raw material of the granular material is provided on a side portion of the cylindrical body 57 of the lower chamber 60b.

[0005] In this conventional vibrating sieve, the powdery raw material pneumatically transported by the transport pipe is separated by a cyclone (not shown) and supplied to the upper chamber 60a from the supply port 61 to form the sieve mesh 59. Let it pass and send it to the lower chamber 60b,
It is discharged from the outlet 63 and collected. In this case, foreign matter such as dust in the powdery material that does not pass through the sieve mesh 59 stays on the sieve mesh 59. The foreign matter such as dust staying on the sieve mesh 59 is temporarily stopped from supplying the granular material, and is discharged and removed from the discharge port 62 by pneumatic pressure generated by supplying only air.

[0006]

However, in the conventional vibrating sieving machine, the granular material is supplied from the supply port 61 at the center of the lid 58 in a state of being separated from the air. The foreign matter therein tends to stay on the central portion of the sieve mesh 59 immediately below the supply port 61 of the granular material, and the central portion of the sieve mesh 59 is particularly prone to clogging.

Further, in the conventional vibrating sieve, the weight of the foreign matter retained on the central portion of the sieve mesh 59 makes the sieve mesh 59 very easy to loosen.

Therefore, the conventional vibrating sieve causes clogging of the central portion of the sieve mesh 59 or prevents the sieve mesh 5 from being clogged.
If the wire 9 is loosened, the sieve mesh 59 must be replaced or replaced frequently, which is troublesome and has to interrupt the pneumatic transportation of the powder material every time. There was a problem that the efficiency of pneumatic transportation became poor.

Accordingly, the present invention is to solve the problems of the above-mentioned conventional vibrating sieve, and eliminates the tendency of foreign substances in the powdery material to stay on the center of the sieve mesh.
It is difficult to cause clogging at the center of this sieve net, and it is also difficult to loosen the sieve net. The purpose of the present invention is to provide a vibrating sieve with improved transportation efficiency.

[0010]

Therefore, in the vibration sieving machine of the present invention, a vibration device 2 is installed inside a gantry 1,
The sieve body 4 is installed above the gantry 1 and the sieve body 4
The sieve mesh 15 is horizontally stretched in the cylindrical body 12 of the upper chamber 16 so as to be divided into upper and lower chambers 16a and 16b.
The supply port 17 for the powdery material is provided on the side a, and the lower chamber 16b
A discharge port 18 for the powdery material is provided on the side, and a discharge tube 20 having a discharge port 19 for foreign matter such as dust in the powdery material is provided on the lid 13 placed over the cylindrical body 12. The pulverized material that has been pneumatically transported is supplied from the supply port 17 to the upper chamber 16a, passed through the sieve net 15 to the lower chamber 16b, discharged from the discharge port 18 and collected, Foreign matter such as dust in the granular material which does not pass through the sieve net 15 is temporarily removed from the discharge port 19 by temporarily stopping the supply of the granular material, and pneumatically supplying only air. .

In the vibrating sieve according to the present invention, the supply port 17 for the powdery material is provided on the side of the cylindrical body 12 of the upper chamber 16a or provided near the periphery of the lid 13. It is a supply port at the lower end of the supply cylinder 21.

Further, in the vibrating sieve according to the present invention, the discharge port 19 for the foreign matter is brought close to the sieve net 15.

Further, in the vibrating sieve according to the present invention, the discharge port 19 for the foreign matter is provided at a central portion of the lid 13 or at a peripheral end of the lid 13 near the discharge port 18 for the raw material. It is an outlet at the lower end of the cylinder 20.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vibrating sieve according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, a vibration sifter according to the present invention has a vibration device 2 installed inside a cylindrical gantry 1 and a sieving body 4 above a gantry 1 via a receiving spring 3. Has been established.

The vibrating device 2 comprises a vibrating body 5 fixed below the sieve body 4 and a motor 6 for vibrating the vibrating body 5. A drive shaft (not shown) penetrates through the vibrating body 5, and a V-pulley 7 is provided at a lower end of the drive shaft. A V-pulley 8 is provided between the V-pulley 7 and a V-pulley 8 attached to the drive shaft of the motor 6. The belt 9 is stretched. Further, the vibrating body 5
The upper and lower drive shafts have vertical balance weights 10
a and 10b are provided, and a buffer spring 11 is wound around a drive shaft below the vibrating body 5.

The sieve main body 4 has a lid 13 placed over an upper part of a cylindrical body 12 composed of a plurality of cylindrical frames 12a, and a conical raw material receiving surface 14 provided below the cylindrical body 12. A sieve net 15 is stretched horizontally in the cylindrical body 12 and divided into two upper and lower chambers 16a and 16b. A supply port 17 for the granular material is provided on the side of the cylindrical body 12 of the upper chamber 16a, and a powder material is provided on the side of the cylindrical body 12 facing the supply port 17 of the lower chamber 16b. Outlet 18 is provided. Further, at the center of the lid 13, a discharge cylinder 20 having a discharge port 19 at the lower end for a foreign substance such as dust in the granular material is provided, and the discharge port 19 is brought close to the sieve net 15. And

As shown in FIG. 3, the supply port 17 for the powdery raw material may be a supply port at the lower end of the supply cylinder 21 provided near the periphery of the lid 13. Further, the discharge cylinder 20
Is not limited to the central portion of the lid 13, as shown in FIG.
It may be provided at the peripheral end of the lid 13 near the outlet 18 for the powdery material.

The vibrating sieve of the present invention comprises a motor 6
Is rotated, the rotational force is applied from the drive shaft of the motor 6 to V
It is transmitted to the pulley 8, the V belt 9, and the V pulley 7, and
The drive shaft of is rotated. Then, the upper and lower balance weights 10a and 10b provided on the drive shaft of the vibrator 5 rotate. The rotation of the upper balance weight 10a generates horizontal vibration of the sieve net 15 of the sieve body 4, and the feed port 1
7 serves to move the granular material on the sieve net 15 supplied from 7 in the radial direction. The rotation of the lower balance weight 10b generates a vertical vibration of the sieve net 15 and serves to move the granular material on the sieve net 15 in the circumferential direction. That is, these vibrations are combined to form the sieve net 15
Cause a special three-dimensional motion. Lower balance weight 10
By changing the phase of b with respect to the upper balance weight 10a, the nature of the vibration changes, and a motion suitable for the properties of the raw material can be obtained.

Therefore, in the vibrating sieve according to the present invention, the raw material pneumatically transported by the transport pipe is supplied to the upper chamber 16a from the supply port 17 without being separated by the cyclone, and passes through the sieve net 15. Let me down 1
6b, and the material receiving surface 14 is slid to the discharge port 18
And collect it. Foreign matter, such as dust, in the granular material that does not pass through the sieve net 15 stays on the sieve net 15. The foreign matter such as dust staying on the sieve net 15 is temporarily stopped from supplying the granular material, and is discharged and removed from the discharge port 19 by the air pressure by the supply of only air. In this case, the outlet 18 for the powdery raw material is kept closed.

In the vibrating sieving machine of the present invention thus constructed, the powdery material is supplied to the supply port 17 provided on the side of the upper chamber 16a of the cylindrical body 12 or the supply port 17 provided near the periphery of the lid 13. Since the raw material is supplied together with the air from the supply port 17 at the lower end of the cylinder 21, the powdery material does not tend to stay in the central portion of the sieve net 15, and the central portion of the sieve net 15 is unlikely to be clogged. . In addition, foreign matter such as dust staying on the sieve net 15 moves on the sieve net 15 and is provided at a central portion of the lid 13 or a peripheral end of the lid 13 near the outlet 18 for the powdery material. The discharge port 19 at the lower end of the discharge cylinder 20
, The portions other than the central portion of the sieve net 15 are less likely to be clogged.

[0022]

The vibrating sieve of the present invention is constructed as described above, so that there is no tendency for foreign substances in the powdery material to stay on the center of the sieve mesh. While making it hard to cause clogging in the center,
The sieve net is made less difficult to loosen, and the exchange and replacement of the sieve net are reduced, thereby improving the transport efficiency of the raw material without frequently interrupting the pneumatic transport.

[Brief description of the drawings]

FIG. 1 is a partially cutaway explanatory view showing an embodiment of a vibration sieve according to the present invention.

FIG. 2 is a side view schematically showing the vibration sieve of the present invention shown in FIG.

FIG. 3 is a side view schematically showing another embodiment of the vibration sieve according to the present invention.

FIG. 4 is a side view schematically showing still another embodiment of the vibration sieving machine of the present invention.

FIG. 5 is a partially cutaway explanatory view showing a conventional vibration sieving machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand 2 Vibration device 4 Sieve main body 12 Cylindrical body 15 Sieve net 16a Upper chamber 16b Lower chamber 17 Cylindrical body 18 Outlet 19 Outlet 20 Outlet cylinder

Claims (6)

[Claims] A vibration device (2) is installed inside a gantry (1), a sieve body (4) is installed above the gantry (1), and a sieve body (12) of the sieve body (4) is placed inside the cylinder (12). When the sieve net (15) is stretched horizontally, the upper and lower two chambers (1)
6a, 16b), a supply port (17) for the granular material is provided on the upper chamber (16a) side, and a discharge port (18) for the granular material is provided on the lower chamber (16b) side. Further, a discharge cylinder (2) having a discharge port (19) for a foreign substance such as dust in the granular material raw material on a lid (13) covered on the upper portion of the cylindrical body (12).
0) is provided, and the pulverized material which has been pneumatically transported is supplied from the supply port (17) to the upper chamber (16a), passed through a sieve net (15), and then to the lower chamber (16b). Feeding, discharging and collecting through the discharge port (18), foreign matter such as dust in the granular material that does not pass through the sieve net (15), temporarily stops the supply of the granular material, and supplies only air. A vibrating sieve, wherein the vibrating sieve is discharged from the discharge port (19) by pneumatic pressure. 2. The vibrating sieve according to claim 1, wherein the supply port (17) for the powder material is provided on a side of a cylindrical body (12) of the upper chamber (16a). Machine. 3. The supply port (17) according to claim 1, wherein the supply port (17) for the powder material is a supply port at the lower end of a supply cylinder (21) provided near the periphery of the lid (13). Vibrating sieve machine. 4. The vibrating sifter according to claim 1, wherein the discharge port (19) for the foreign matter is arranged close to a sieving net (15). 5. A discharge port (19) for the foreign matter, the cover (1)
The vibrating sieve according to any one of claims 1 to 4, wherein the discharge tube (20) provided at the center of (3) is a discharge port at a lower end. 6. The discharge port (19) for the foreign matter is a discharge port at a lower end of a discharge cylinder (20) provided at a peripheral end of a lid (13) near a discharge port (18) for a raw material of powder and granular material. The vibration sieving machine according to any one of claims 1 to 4, wherein: