Air suction type feeding mechanism

Abstract

The utility model provides an air suction type feeding mechanism, and belongs to the technical field of plastic products. Comprising a buffer material tank and a negative pressure pipe inserted in the buffer material tank, the upper end of the negative pressure pipe extends out of the buffer material tank, a discharging pipe is arranged at the bottom of the buffer material tank, a plurality of feeding pipes are arranged on the side wall of the buffer material tank, the upper end of the negative pressure pipe is connected with a negative pressure air source, a center shaft is rotationally connected into the negative pressure pipe, and the center shaft is driven by a motor. A centrifugal disc located between the lower end of the negative pressure pipe and the upper end of the discharging pipe is fixedly arranged at the lower end of the center shaft. The device has the advantages of long maintenance period and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic product processing and relates to an air suction type feeding mechanism. Background Art

[0002] During the processing of degradable plastic bags, plastic particles and other ingredients need to be continuously fed to the hot melt process and mixed after feeding. At present, suction feeding is often used for plastic particles. The suction feeding structure generally includes a main air duct, a feed pipe and a discharge pipe. The feed pipe is connected to the raw material barrel, and the main air duct is connected to the negative pressure fan. The three are connected in parallel. The air flow sucks the raw materials from the raw material barrel to the receiving container connected to the discharge pipe. Since there is a certain amount of dust and smaller particle size materials in the plastic particle materials, the existing suction method can easily cause small particle size materials and dust to enter the main air duct, thereby causing failure of the main air duct mechanism and the fan, and also causing material waste and metering errors. Utility Model Content

[0003] The purpose of the present invention is to provide an air suction feeding mechanism to solve the above-mentioned problems existing in the existing technology. The technical problem to be solved by the present invention is how to reduce the probability of materials entering the negative pressure pipe and avoid fouling and clogging of the negative pressure pipe.

[0004] The purpose of the present utility model can be achieved through the following technical solutions: a wind-suction feeding mechanism, characterized in that it includes a buffer material tank and a negative pressure tube inserted in the buffer material tank, the upper end of the negative pressure tube extends above the buffer material tank, the bottom of the buffer material tank is provided with a discharge pipe, and the side wall of the buffer material tank is provided with a plurality of feed pipes, the upper end of the negative pressure tube is connected to a negative pressure air source, and a central shaft is rotatably connected in the negative pressure tube, and the central shaft is driven by a motor, and the lower end of the central shaft is fixedly provided with a centrifugal disk located between the lower end of the negative pressure tube and the upper end of the discharge pipe.

[0005] Furthermore, the upper surface of the centrifugal disc is provided with a plurality of guide pieces capable of guiding the material to the outside of the centrifugal disc when the centrifugal disc rotates.

[0006] This solution uses negative pressure to suck the material into the buffer tank and then quickly reduces the speed of the material so that it cannot enter the negative pressure pipe. At the same time, the centrifugal disk can keep the material away from the air inlet of the negative pressure pipe, thereby further preventing small particle size materials from entering the negative pressure pipe.

[0007] At the same time, after a variety of materials enter the buffer tank, the rotation of the centrifugal disc can mix them to a certain extent and then enter the discharge pipe, achieving the purpose of preliminary mixing during the feeding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the air suction feeding device.

[0009] In the figure, 1. Buffer tank; 2. Negative pressure pipe; 3. Discharge pipe; 4. Feed pipe; 5. Center shaft; 6. Motor; 7. Centrifugal disc; 8. Guide sheet. DETAILED DESCRIPTION

[0010] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0011] like Figure 1 The air suction feeding mechanism shown includes a buffer material tank 1 and a negative pressure pipe 2 inserted in the buffer material tank 1. The upper end of the negative pressure pipe 2 extends above the buffer material tank 1. A discharge pipe 3 is provided at the bottom of the buffer material tank 1. A plurality of feed pipes 4 are provided on the side wall of the buffer material tank 1. The upper end of the negative pressure pipe 2 is connected to a negative pressure air source. A central shaft 5 is rotatably connected in the negative pressure pipe 2. The central shaft 5 is driven by a motor 6. The lower end of the central shaft 5 is fixedly provided with a centrifugal disc 7 located between the lower end of the negative pressure pipe 2 and the upper end of the discharge pipe 3. The upper surface of the centrifugal disc 7 has a plurality of guide pieces 8 that can guide the material to the outside of the centrifugal disc 7 when the centrifugal disc 7 rotates.

[0012] This solution uses negative pressure to suck the material into the buffer tank 1 and then quickly reduces the speed of the material so that it cannot enter the negative pressure pipe 2. At the same time, the centrifugal disk 7 can keep the material away from the air inlet of the negative pressure pipe 2, thereby further preventing small particle size materials from entering the negative pressure pipe 2.

[0013] At the same time, after a variety of materials enter the buffer tank 1, the rotation of the centrifugal disk 7 can mix them to a certain extent and then enter the discharge pipe 3, thereby achieving the purpose of preliminary mixing during the feeding process; since it is difficult for the material to enter the negative pressure pipe 2, it will not enter the fan with the negative pressure pipe, therefore, it will not cause blockage of the negative pressure pipe 2 and the fan, and the maintenance cycle is long.

[0014] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A wind suction feeding mechanism, characterized in that: The invention comprises a buffer material tank (1) and a negative pressure pipe (2) inserted in the buffer material tank (1), wherein the upper end of the negative pressure pipe (2) extends above the buffer material tank (1), a discharge pipe (3) is provided at the bottom of the buffer material tank (1), and a plurality of feed pipes (4) are provided on the side wall of the buffer material tank (1), the upper end of the negative pressure pipe (2) is connected to a negative pressure gas source, a central shaft (5) is rotatably connected in the negative pressure pipe (2), the central shaft (5) is driven by a motor (6), and a centrifugal disc (7) is fixedly provided at the lower end of the central shaft (5) and is located between the lower end of the negative pressure pipe (2) and the upper end of the discharge pipe (3).

2. The air suction feeding mechanism according to claim 1, characterized in that: The upper surface of the centrifugal disc (7) is provided with a plurality of guide pieces (8) capable of guiding materials to the outside of the centrifugal disc (7) when the centrifugal disc (7) rotates.

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