JPS5847716A - Discharge gate for rotary drive type conveyor - Google Patents

Abstract

PURPOSE:To reduce leakage of powdery substance and to prevent staying of it, by a method wherein a gate is formed into a rotary type which turns around a shaft of a cylinder along the inner surface of the cylinder, and a shape in a conveying direction in the cylinder is formed into reverse triangle. CONSTITUTION:A powdery substance, charged to a conveyor 1 from a supply part, stops being supplied to the conveyor 1 at a point of time when a quantity, detected by a weight detector 6, reaches a given quantity. With a coil 3 rotatively driven, the powdery substance is gradually carried to a rotary type discharge gate 7 from a spot in the proximity of a charging port 4, and the powdery substance in a cylinder 2 is all discharged from a discharge port 5 to a part to be supplied. At the discharging time, gates 8 in the discharge gate 7 are formed in a triangle, and thereby, even in case the powdery substance stays in a dead space 9, the both sides edges of the gates 8 push out the powdery substance toward the discharge port 5 at a time when the next discharge gate 7 is closed.

Description

[Detailed Description of the Invention] The present invention relates to a discharge gate for a rotary drive type conveyor such as a screw conveyor for transferring powder and granular materials such as resins and pigments, and its purpose is to have a simple structure. It is soft and has less powder leakage and biting,
The present invention is to provide a discharge gate for a rotary drive type conveyor that can discharge the entire amount without creating a dead space near the discharge port.The present invention will be described in detail below with reference to the drawings. The illustrated conveyor (1) constitutes a meter lid supply device, and (2) in the figure is a syringe with an input port (4) on the top surface of one end and a discharge gate (7) on the bottom of the other end. , this shirishi J-
A coil (3) that is rotated is installed inside the +21. Coaxial with cylinder (2) and cylinder: / 9-
The coil (3), which has a length approximately equal to the total length of Ill, has its outer peripheral edge inscribed in at least the lower part of the inner circumferential surface of the syringe (2), and is rotated by a motor α5) at one end, and is inserted from the input port (pull). The powdered material is discharged from the other end of the discharge gate (
7). This Sirin J-121
The conveying machine (1) composed of a coil (3) and a coil (3) is configured to be able to measure the weight, that is, the weight of the powder or granular material inside the conveying machine (1), using a weight detector (6). The input port (4) is connected to a screw conveyor (11) at the bottom of the storage tank as a supply section, and the discharge gate (7) is connected to a mixing tank as a supplied section.

The discharge gate (1) is a set of 0-tally, and the discharge port (11) provided on the bottom surface of the other end of the cylinder 4-(+1)
At the 0-tally solenoid end provided at the other end of this cylinder (2), a gate (s: Fi, m: a) that opens and closes by being rotationally driven coaxially with the cylinder (-+21):
A cylinder J with approximately the same curvature as the inner surface of 52-+21
It rotates around the axis of the cylinder J-(21) while slidingly contacting the inner surface of the cylinder J-(+1, and has an inverted triangular shape in the transfer direction, that is, a triangular shape with one end on the input port (4) side pointed. ing.

The amount of powder and granules fed into the conveyor (1) from the supply section is detected by the weight detector (6) K, and when the predetermined amount is reached, the supply to the conveyor (1) is stopped. The syringe is stopped, and by the rotational drive of the coil C81, it is gradually sent from the vicinity of the input port (41) to the discharge gate (1), and the syringe (
The entire amount of the powder in 2) is discharged from the discharge port (6) to the supplied section. At the time of this discharge, since the gate (81) in the discharge gate (7) is triangular as described above, the cylindrical part (81) is smaller than the discharge port (6) which is formed when the discharge gate (7) is opened. 2) Even if the dead space (9) K powder remains on the other end side, when closing the next discharge gate ()), both edges of the gate (8: (6i).Therefore, there is no residual powder in the dead space (9).Also, the shape of cylinder J-(21) is not circular in cross section as shown in Figure 2(b). Alternatively, as shown in FIG. 3, at least the lower half circumference may have a circular cross section, for example, a U-shaped cross section.

As described above, in the present invention, the gate is a set of 0-tally that rotates around the axis of the syringe along the inner surface of the syringe, and the shape in the transfer direction that can be inserted into the syringe is an inverted triangular shape. Since it is a type of powder, the gate can be driven simply by rotating it, and because of the shape of the gate, there is little powder leakage or entrapment, and there is no powder left near the discharge port. It is.

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view of one embodiment of the present invention, Fig. 2 (aJ) is a sectional view of the main part of the same, and Fig. 3 is a sectional view showing the other side of the syringe. Conveyor, (2) indicates silicider, (31 coil, (6) welfare discharge port, (702 discharge gate, (8: indicates gate. Agent Patent Attorney Ishi 1) Chief, Chemical No. 11!M 1112 Figure ((1) (b) Figure 3 on 11

Claims (1)

[Claims] (11) An exhaust system provided at one end of the syringe whose lower half circumference is arcuate to discharge powder and granules sent through the syringe by a transfer body such as a screw or coil that is driven to rotate within the syringe. Consisting of an outlet and a rotary-operated gate disposed within one end of the syringe and in sliding contact with at least the lower inner circumferential surface of the cylinder and rotating around the axis of the syringe to open and close the discharge port, the gate company series: J
A discharge gate for a rotary drive type conveyor, characterized in that the shape in the transfer direction within the rotary drive conveyor is an inverted triangular shape.