JPH018160Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention ensures the adjustment of the amount of material supplied to the extruder for food production, and also allows the removal of residual material in the material hopper easily and quickly. The present invention relates to a material supply device for an extruder intended for the following purposes.

(Prior Art) Conventionally, the amount of material supplied to the extruder has been adjusted by adjusting the opening degree of a shutter attached to the outlet of the material hopper.

(Problems to be solved by the invention) For this reason, there was a problem that there was no certainty in adjusting the amount of material supplied, and the amount of supplied material was unstable.
In addition, when it was necessary to remove the material remaining in the material hopper, it was necessary to rely on human labor, which resulted in problems such as labor and time, heavy labor, and a decrease in operating efficiency. Ta.

(Means for solving the problem) However, in this invention, a screw conveyor is installed horizontally at the bottom of the material hopper, and a drive device for rotating the screw conveyor forward and backward is connected to the end of the screw conveyor. , a hopper of the extruder faces below a discharge port provided at the tip of the screw conveyor, and a discharge port is installed at the base end of the screw conveyor apart from the outlet of the hopper; The starting end of the belt conveyor was placed below the removal port.

(Function) In the above configuration, by appropriately adjusting the rotation speed of the screw conveyor using the drive device, the amount of material supplied to the extruder can be reliably adjusted, and the screw conveyor can be rotated in the opposite direction to screw the screw conveyor. By appropriately changing the moving direction of the material in the Yukon conveyor, the remaining material in the material hopper can be automatically and easily removed, thus solving the above-mentioned conventional problems.

(Example) This invention will be described below based on an example shown in the drawings. A screw conveyor 3 is installed horizontally below the material hopper 1 to receive the material flowing out from the outlet 2 of the material hopper 1, and the screw conveyor 3 has a material transfer pipe 4 and a material transfer pipe 4. It consists of a screw 5 installed inside. A discharge port 6 is provided at the lower end of the material transfer pipe 4, and the upper end of the discharge pipe 7 is vertically connected to the discharge port 6. The lower end of the discharge pipe 7 is connected to the extruder 8. It is facing Hopper 9.

A discharge port 10 with an opening/closing lid is provided below the base end of the material transfer tube 4. The discharge port 10 is located closer to the proximal end of the screw conveyor 3 than the downstream port 2 of the material hopper 1. A drive device for forward and reverse rotation is connected to the base end of the shaft 5a of the screw 5 of the screw conveyor 3. That is, a bevel gear 11 is fitted to the base end of the shaft 5a, and the bevel gear 11 meshes with a bevel gear 13 fitted to the shaft of the induction motor 12. The motor 12 is connected to a variable transmission. In the figure, 14 and 15 are bearings for the shaft 5a of the screw 5, and 16 and 16a are support plates.

Next, the operation of the apparatus of the above embodiment will be explained.

When the material is put into the material hopper 1, the motor 12 is rotated at a predetermined speed, and the screw 5 is rotated in the forward direction (arrow 17), the material moves inside the material transfer pipe 4 as shown by the arrow 18 (in Fig. 3). ), and is supplied to the hopper 9 of the extruder 8 via the discharge port 6 and the discharge pipe 7. In the above, the amount of material supplied to the hopper 9 can be adjusted steplessly by setting the rotation speed of the screw 5 by controlling the rotation speed of the motor 12.

Next, if you need to change the type of material,
The remaining material in the material hopper 1 must be removed, but in this case the opening/closing lid of the removal port 10 is opened and the motor 12 is rotated in the opposite direction to that used when supplying the material, and the screw 5 is rotated in the opposite direction (as indicated by arrow 19). ).
Then, the remaining material in the hopper 1 is shown by the arrow 20 (third
) in the figure, and flows out from the removal port 10,
Belt conveyor 21 installed below the removal port 10
The material is transported to the material storage tank by If the screw 5 is rotated at high speed in the above, the remaining material in the material hopper 1 can be removed more quickly.

In the above embodiment, the screw conveyor 3
Although it was installed horizontally, it is not necessarily necessary to install it horizontally as long as the material can be transferred smoothly. Further, an opening/closing lid is attached to the removal port 10 as required.

Furthermore, in the above embodiment, since the screw 5 was rotated by an induction motor,
Although the rotational speed of the screw 5 is controlled with high accuracy, the motor is not limited to an induction motor. Note that the discharge pipe 7 connected to the discharge port 6 is not an essential requirement.

(Effect of the invention) That is, according to this invention, a screw conveyor is installed horizontally at the bottom of the material hopper, and a drive device for rotating the screw conveyor in forward and reverse directions is connected to the end of the screw conveyor. Since the material is supplied to the extruder via the screw conveyor, the amount of material supplied can be regulated accurately and stably by adjusting the rotation speed of the screw of the screw conveyor as appropriate. There is.

In addition, a removal port is provided at the base end of the screw conveyor, and the starting end of the belt conveyor is exposed below the removal port, so that by rotating the screw in the opposite direction, the remaining material in the material hopper can be removed from the removal port. The material can be more quickly and automatically removed to the outside, and the removed material can be automatically transported to a desired location such as a material storage tank. As a result, there are various effects such as contributing to saving labor and improving the operating efficiency of the extruder. Furthermore, since the remaining material can be removed immediately when the desired quantity is reached, there is no risk of producing excess (wasteful) extrusion molded products.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the invention, FIG. 2 is a plan view, and FIG. 3 is a partially cutaway side view. 1... Material hopper, 2... Downflow port, 3... Screw conveyor, 4... Material transfer pipe, 5... Screw, 6... Discharge port, 8... Extruder, 9... Hopper, 10 ...Exclusion port.

Claims (1)

[Scope of utility model registration request] A screw conveyor consisting of a material transfer pipe and a screw is installed horizontally at the bottom of the material hopper, and a drive device for rotating the screw in forward and reverse directions is connected to the end of the screw, and a drive device is installed at the tip of the material transfer pipe. The hopper of the extruder faces below the discharge port, and a discharge port is installed at the proximal end of the material transfer pipe apart from the downstream port of the hopper, and the starting end of the belt conveyor is located below the discharge port. The material supply device for the Extruder.