JPH0742768U - Powder feeder - Google Patents

Abstract

(57) [Summary] [Object] To provide a powder feeder capable of smoothly discharging a granular material in a hopper that accommodates a large-capacity granular material with a small-sized, low-power device at a low cost. [Structure] A cylindrical body 4 is provided below a hopper 1 for accommodating powder and granules.
And the dome-shaped fixed plate 2 is provided on the bottom surface of the cylindrical body 4, a small opening 5 is provided between the fixed plate 2 and the side wall of the cylindrical body 4, and the fixed plate 2 of the cylindrical body 4 is A horizontal annular granular material transfer body 9 for receiving the granular material discharged from the opening 5 is arranged on the outer periphery, and the granular material transfer body 9 is rotated by a rotation drive unit 11 via a rotary frame 10. The powdery or granular material discharge unit 12 is provided in the middle of the rotation transfer path of the powdery or granular material transfer body 9. Also, the cylinder 4
A vibration motor 16 for exciting the stationary platen 2 and the stationary platen 2 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder feeder for discharging powder particles from a storage chamber (simply referred to as a hopper) such as a silo, container, or tank that stores a large amount of powder particles.

[0002]

[Prior art]

 In the conventional powder feeder, a rotating powder granule transfer plate is provided on the bottom surface of a cylindrical body that communicates with the lower part of the hopper, and the powder granules in the hopper are formed by the grooves, cells and blades of the powder granule transfer plate. The powder and granules are filled in the container, and rotated and discharged from the hopper outside or at a desired position inside the hopper to the outside of the hopper. In the structure of this conventional powder feeder, when the hopper becomes large and a large amount of powder is stored, a large weight of powder acts on the powder transfer board, and the powder moves under the high powder pressure. In addition to having to rotate the body transfer board and requiring a large amount of horsepower, a large thrust force must act on the rotary drive mechanism to be a large, axially resistant mechanism. There was a problem that it was large and costly. In addition, there are problems that it is difficult to rotate, and it is difficult to control the powder feed amount accurately due to the pressure of powder particles.

[0003]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to solve the problem of the conventional powder feeder, and even in the hopper of a large-capacity powder, the powder can be discharged smoothly with a small-sized and low-power device at a low cost. To provide a powder feeder.

[0004]

[Means for Solving the Problems]

 The configuration of the present invention which solves such a problem is as follows. A horizontal granular material transfer body that receives the granular material discharged from the opening is rotatably provided on the outer periphery of the fixed plate of the cylindrical body, and the granular material is provided in the middle of the rotary transfer path of the granular material transfer body. Powder feeder characterized in that a body discharge portion is provided 2) The powder feeder described in 1) above, in which the opening area of the opening can be adjusted. 2) The powder feeder described above.

[0005]

[Action]

 In the present invention, the weight of the powder in the hopper acts on the dome-shaped fixed plate on the bottom of the cylinder, and the powder on the fixed plate is a small opening between the side wall of the hopper and the fixed plate. The powder leaks out, moves to the powder / particle transport body, is transferred as the powder / particle transport body rotates, and is discharged from the powder / particle discharge unit to the outside. In this way, the powder and granule pressure in the hopper does not act directly on the powder and granular material transfer body, and only the slight weight of the powder and granular material leaking from the opening is received. Is significantly reduced to the order of 1 / 10,000. Therefore, the powdery- or granular-material transfer body is small and the powdery- or granular material can be smoothly discharged by the driving device having a small horsepower. In particular, since the fixed plate is curved in a dome shape, it has a strength capable of supporting a high weight of powder and it is easy to transfer the powder to the opening. Further, if the opening area of the opening can be adjusted, it is possible to adjust the powder supply amount and the leaking powdery particles to an appropriate state. Further, if the cylindrical body and the stationary platen are vibrated, the glitching phenomenon of the granular material is eliminated and the granular material can be smoothly moved.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment, and FIG. 2 is an explanatory view showing another example of the powdery or granular material transferring body. In the figure, 1 is a hopper, 2 is a dome-shaped stationary plate which is the bottom surface of the cylindrical body 4, 3 is an arm for supporting the stationary plate on the cylindrical body 4, 4 is a cylindrical body, and 5 is an opening provided at the lower end of the cylindrical body 4. 6 is an elevating cylinder that changes the opening area of the opening, 7 is a cylinder that moves the elevating cylinder 6 up and down, 8 is a connecting rod that moves the elevating cylinder 6 up and down with the same cylinder, and 9 is a ring with a flat upper surface. Powder and granular material transferring body, 10 is a rotary frame for supporting and rotating the powdery and granular material transferring body 9, 11 is a rotary drive unit using a motor for driving the rotary body, 12 is a powdery or granular material discharging unit, 13 Is a scraper that comes into contact with the upper surface of the granular material transfer body 9 at the same granular material discharge section 12 to scrape off the granular material on the granular material transfer body 9, 14 is a discharge chute, and 15 is the granular material transfer body 9 , A vibration motor, 17 is a vibration member, 17 is a vibrating member, and P is a granular material. .

In this embodiment, the weight of the powder or granular material P stored in the hopper 1 is directly applied to the fixed platen 2 via the cylindrical body 4 communicating with the lower part thereof, and the fixed platen 2 is powdered. Supports the weight of the granules P. The granular material P near the fixed board 2 leaks from the opening 5 below the lower end of the cylindrical body 4 and moves to the upper surface of the granular material transfer body 9. The amount of the granular material P leaking from the opening 5 is determined by the opening area of the opening 5, the angle of repose of the granular material P, and the inclination of the fixed platen, and the amount of leakage of the granular material P in the hopper 1 is determined. Compared with the amount (hundreds of kg to hundreds of tons), the amount is about 1 / 10,000, which is significantly smaller. Even if the powder pressure is too high, the tilt of the fixed platen 2 and the vibration of the cylinder 4 and the fixed platen 2 caused by the vibration motor 16 cause the powdery particles to move to the opening 5 without being blitched and discharged. Therefore, the number of powder particles on the upper surface of the powder / particle transfer body 9 is small, the thrust load applied to the powder / particle transfer body 9 is also reduced to about 1 / 10,000, and the rotation speed is small and the horsepower is small. The drive unit 11 smoothly rotates the powder or granular material, and in the powder or granular material discharging unit 12, the powder or granular material is scraped out by the scraper 13 and discharged to the discharge chute 14. Here, the effective opening area of the opening 5 can be changed by moving the elevating cylinder 6 up and down by the cylinder 7 and the connecting rod 8. As a result, the amount of powder or granules leaking through the opening 5 can be adjusted and the amount of powder supplied can be changed. Further, it is possible to adjust the effective opening area of the opening 5 according to the amount of powder or granular material stored so that a fixed amount of powder can be fed. Further, it is possible to prevent an excessive amount of powder from leaking to the opening 5. Further, it is possible to rotate and transfer the powdery or granular material transfer body 9 with the elevating cylinder 6 lowered and the opening 5 closed.

It should be noted that the powder / particle transport body 9 does not have to be at the same level as the fixed platen 2, and may be at a position lower than the bottom surface 2 as shown in FIG. Further, the method of accommodating the granular material of the granular material transferring body 9 may be simply placing the granular material on a flat plane as in the present embodiment, or the granular material transferring method as in the conventional accommodating method. A method may be used in which a groove is formed in an annular shape on the upper surface of the body 6, the powder or granular material is housed in the groove, and the powder or granular material is discharged from the groove by a scraper inserted into this groove at the powder or granular material discharging portion. Alternatively, the powder / particle carrier 9 has a structure in which blades are radially provided, the blades are rotated on a fixed bottom plate, and the powder accommodated between the blades is moved downward at a position where the bottom plate has a discharge hole. The particulate discharge unit may be designed to discharge. Further, it is also possible to adopt a masu type powder / granular material transport structure.

[0009]

[Effect of device]

 As described above, according to the present invention, due to the structure of the dome-shaped stationary plate on the bottom surface of the fixed cylinder, the opening at the lower end of the cylinder and the powder-and-particle transfer body rotating around its periphery, a large amount of powder and particles can be obtained. Even in the hopper that accommodates the powder, it is possible to smoothly discharge the powder and granules with the small-sized and low-horsepower drive device. Further, the discharge amount of the powder supply can be controlled easily and accurately. If the opening area of the opening can be adjusted, it is possible to adjust the powder supply amount, the opening area according to the amount of powder or granular material, and prevent excessive leakage of powder or granular material. By making the fixed plate dome-shaped and by vibrating the cylindrical body and the fixed plate, it is possible to more reliably discharge the granular material that does not easily leak from the opening. Also, by making the fixing plate a dome shape, it is possible to make it strong in terms of strength.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing another example of a powdery- or granular-material transport body.

[Explanation of symbols]

 1 Hopper 2 Fixed Plate 3 Arm 4 Cylindrical Body 5 Opening 6 Elevating Cylinder 7 Cylinder 8 Connecting Rod 9 Powder and Grain Transfer Body 10 Rotating Frame 11 Rotation Drive Section 12 Powder and Grain Discharging Section 13 Scraper 14 Discharging Chute 15 Annular Chamber 16 Vibration Motor 17 Vibration transmission member P Powder and granular material

Claims (3)

[Scope of utility model registration request] 1. A fixed plate curved in a dome shape so that the center protrudes is provided on a bottom surface of a cylindrical body communicating with a lower portion of a hopper for accommodating the granular material, and a small plate is provided between the fixed plate and a side wall of the cylindrical body. An opening is provided, and a horizontal granular material transfer body that receives the granular material discharged from the opening is rotatably provided on the outer periphery of the stationary plate of the cylindrical body, and the horizontal granular material transfer body is provided in the middle of the rotational transfer path of the granular material transfer body. A powder feeder provided with a powder discharge unit. 2. The powder feeder according to claim 1, wherein the opening area of the opening is adjustable. 3. The powder feeder according to claim 1, wherein vibration is applied to the cylindrical body and the fixed platen.