Vacuum feeding machine for nylon yarn processing

Abstract

The utility model relates to the technical field of vacuum feeding machines, in particular to a vacuum feeding machine for nylon yarn processing, which comprises a filter screen, a material collecting tank and a vacuumizing pump, a filter screen mounting frame is arranged in the material collecting tank, the filter screen is mounted in the filter screen mounting frame in a matched manner, a mounting shaft is arranged above the filter screen mounting frame, and the vacuumizing pump is arranged on the mounting shaft. The two ends of the mounting shaft penetrate through the material collecting tank and extend to the outer side of the material collecting tank, the surface of the mounting shaft is fixedly sleeved with two symmetrically-arranged cams, the mounting shaft and the cams are eccentrically arranged, the bottoms of the two cams make contact with the top of the filter screen mounting frame, one end of the mounting shaft is connected with a driving motor, and the other end of the mounting shaft is connected with a driving motor. A plurality of elastic mechanisms are arranged at the bottom of the filter screen mounting frame. According to the scheme, the filter screen mounting frame is driven to vibrate in the moving process, powder or crystals attached to the bottom of the filter screen fall off due to vibration, long-time blockage of filter holes by raw materials of polyamide yarns is prevented, the flow of air passing through the filter screen in air flow is increased, and the feeding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum feeders, and in particular to a vacuum feeder for nylon yarn processing. Background Technology

[0002] Nylon filament, as a synthetic fiber, is mainly made from adipic acid, hexamethylenediamine, and caprolactam. These raw materials are formed into synthetic fiber filaments through polycondensation reaction and melt spinning, while adipic acid, hexamethylenediamine, and caprolactam are in the form of powder or crystals.

[0003] In existing nylon yarn processing, vacuum feeders are typically used to transport powdered or crystalline adipic acid, hexamethylenediamine, and caprolactam into the processing equipment. After the powdered or crystalline raw materials flow into the vacuum feeder's tank with gas, most of the raw materials fall to the bottom of the tank, while a small portion adheres to the surface of the filter screen with the gas flow. This clogs the filter screen's mesh, reducing the amount of gas flowing through it and thus decreasing the intensity of the gas flow in the vacuum feeder. Consequently, the material feeding efficiency is reduced. Furthermore, when the filter screen becomes clogged, manual cleaning of the filter screen surface is required after the machine has finished operating, reducing operational convenience. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a vacuum feeding machine for nylon yarn processing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A vacuum feeder for nylon filament processing includes a filter screen, a collection tank, and a vacuum pump. The collection tank has a filter screen mounting frame inside, and the filter screen is fitted inside the frame. A mounting shaft is located above the frame, with both ends of the shaft penetrating the collection tank and extending to its outer side. Two symmetrically arranged cams are fixedly fitted onto the surface of the mounting shaft. The mounting shaft and the cams are eccentrically positioned, with the bottoms of the two cams contacting the top of the frame. One end of the mounting shaft is connected to a drive motor, and the bottom of the frame has multiple elastic mechanisms.

[0007] Preferably, an air extraction pipe is installed through the top of the collection tank, one end of which is connected to the air inlet of a vacuum pump, and a suction pipe is installed through the side of the collection tank. The filter screen mounting frame is located between the air extraction pipe and the suction pipe.

[0008] Preferably, the bottom of the collection tank is provided with a discharge port, and the discharge port is matched with a discharge blocking plate.

[0009] Preferably, an installation groove is provided along the outer circumference of the filter mounting frame, and a rubber sealing ring is fitted in the installation groove, with the outer circumference of the rubber sealing ring in close contact with the inner wall of the collection tank.

[0010] Preferably, the elastic mechanism includes a fixed block, one end of which is installed on the inner wall of the collection tank. A sliding rod is installed through the surface of the fixed block, and a connecting block is installed at the top of the sliding rod. The connecting block is installed at the bottom of the filter screen mounting frame. A compression spring is movably sleeved on the surface of the sliding rod, and the two ends of the compression spring are respectively installed on the surfaces of the connecting block and the fixed block. A stop block is installed at the bottom of the sliding rod.

[0011] Preferably, a plurality of limiting blocks are placed on the top of the filter screen mounting frame, and one end of the limiting block is installed on the inner wall of the collection tank.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This solution uses a drive motor to control the rotation of the mounting shaft. The mounting shaft drives two eccentrically positioned cams to rotate. Since the distance between the end of the cam furthest from the mounting shaft and the mounting shaft is greater than the distance between the end of the cam closest to the mounting shaft, after the end of the cam furthest from the mounting shaft rotates to the surface of the filter screen mounting frame, the cam will push the filter screen mounting frame downwards to slide within the inner wall of the collection tank. Simultaneously, the filter screen mounting frame presses against the elastic mechanism. After the cam moves away from the filter screen mounting frame, the elastic mechanism uses its elastic potential energy to drive the filter screen mounting frame upwards, thereby causing the filter screen mounting frame to move up and down reciprocally within the collection tank. During this movement, the filter screen mounting frame vibrates, causing powder or crystals adhering to the bottom of the filter screen to fall off due to the vibration. This prevents the nylon filament raw material from clogging the filter pores for an extended period, increases the airflow through the filter screen in the airflow, and improves the feeding efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a vacuum feeder for nylon yarn processing according to the present invention;

[0015] Figure 2 This is a schematic diagram of the temporal structure of the material collection tank of a vacuum feeder for nylon yarn processing according to the present invention;

[0016] Figure 3 This is a schematic diagram of the connection structure between the filter screen mounting frame and the limiting block of a vacuum feeder for nylon filament processing according to the present invention;

[0017] Figure 4 This is a schematic diagram of the cam and mounting shaft connection structure of a vacuum feeder for nylon yarn processing according to the present invention;

[0018] Figure 5This is a schematic diagram of the elastic mechanism structure of a vacuum feeder for nylon yarn processing according to the present invention.

[0019] In the diagram: 1. Drive motor; 2. Vacuum pipe; 3. Vacuum pump; 4. Material discharge block; 5. Suction pipe; 6. Collection tank; 7. Fixing block; 8. Compression spring; 9. Rubber sealing ring; 10. Filter screen mounting frame; 11. Cam; 12. Mounting shaft; 13. Limiting block; 14. Filter screen; 15. Connecting block; 16. Sliding rod; 17. Stop block. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] like Figure 1-5The vacuum feeder for nylon filament processing shown includes a filter screen 14, a collection tank 6, and a vacuum pump 3. A filter screen mounting frame 10 is located inside the collection tank 6, and the filter screen 14 is fitted inside the filter screen mounting frame 10. A mounting shaft 12 is located above the filter screen mounting frame 10, with both ends of the mounting shaft 12 penetrating the collection tank 6 and extending to its outer side. Two symmetrically arranged cams 11 are fixedly fitted onto the surface of the mounting shaft 12, eccentrically positioned between the mounting shaft 12 and the cams 11. The bottoms of the two cams 11 contact the top of the filter screen mounting frame 10. One end of the mounting shaft 12 is connected to a drive unit. The motor 1 and the bottom of the filter screen mounting frame 10 are equipped with multiple elastic mechanisms. Each elastic mechanism includes a fixing block 7, one end of which is mounted on the inner wall of the collection tank 6. A sliding rod 16 is mounted through the surface of the fixing block 7. A connecting block 15 is mounted at the top of the sliding rod 16, and the connecting block 15 is mounted at the bottom of the filter screen mounting frame 10. A compression spring 8 is movably sleeved on the surface of the sliding rod 16, with both ends of the compression spring 8 mounted on the surfaces of the connecting block 15 and the fixing block 7, respectively. A stop block 17 is mounted at the bottom of the sliding rod 16. This stop block is used to clean the raw material adhering to the bottom of the filter screen 14 during the raw material feeding process. The drive motor 1 controls the rotation of the mounting shaft 12, which in turn drives the two cams 11 eccentrically positioned thereto to rotate. Since the distance between the end of the cam 11 furthest from the mounting shaft 12 and the end of the cam 11 closest to the mounting shaft 12 is greater than the distance between the end of the cam 11 and the mounting shaft 12, the end of the cam 11 furthest from the mounting shaft 12 rotates to the surface of the filter screen mounting frame 10. As the end of the cam 11 furthest from the mounting shaft 12 slides on the top of the filter screen mounting frame 10, the filter screen mounting frame 10 drives multiple connecting blocks 15 to move downwards synchronously. The connecting blocks 15 push the sliding rod 16. Sliding in the fixed block 7, while the connecting block 15 pushes the compression spring 8, the compression spring 8 is compressed in length under force. At this time, the compression spring 8 is in elastic potential energy. After the cam 11 moves away from the filter screen mounting frame 10, the filter screen mounting frame 10 is not subjected to external force. Multiple compression springs 8 push the filter screen mounting frame 10 upward through their own elastic potential energy. After the top of the filter screen mounting frame 10 moves to the bottom of the limiting block 13, it stops moving. This facilitates the cam 11 to drive the filter screen mounting frame 10 to move up and down to generate vibration, thereby causing the powder or crystals attached to the bottom of the filter screen 14 to fall off.

[0022] A suction pipe 2 is installed through the top of the collection tank 6. One end of the suction pipe 2 is connected to the air inlet of the vacuum pump 3. A suction pipe 5 is installed through the side of the collection tank 6. The filter screen mounting frame 10 is located between the suction pipe 2 and the suction pipe 5. One end of the suction pipe 5 extends into the container storing the raw materials. After the vacuum pump 3 is powered on, the air in the collection tank 6 is extracted to the external environment. At this time, the collection tank 6 is under negative pressure. The air pressure in the external environment is higher than that in the collection tank 6 and is connected through the suction pipe 5. At this time, the air in the external environment will be transported to the collection tank 6 through the suction pipe 5 and then extracted again by the vacuum pump 3. Therefore, a continuous flow of gas is generated. The flowing gas carries the powder or crystalline raw materials through the suction pipe 5 to the collection tank 6. Most of the raw materials fall into the collection tank 6 due to gravity, and a small part adheres to the bottom of the filter screen 14 due to the continuous flow of gas. This is used to complete the vacuum feeding operation before nylon filament processing.

[0023] The bottom of the collection tank 6 is provided with a discharge port, which is matched with a discharge block plate 4. During the operation of the vacuum pump 3, the discharge block plate 4 is installed at the bottom of the collection tank 6 by bolts or buckles, and a sealing gasket is set between the discharge block plate 4 and the collection tank 6 for sealing treatment, which improves the stability of the raw material being sucked into the collection tank 6. After the raw material is absorbed, the discharge block plate 4 can be opened, and the raw material inside the discharge block plate 4 is discharged from the discharge port to the processing equipment or receiving container.

[0024] An installation groove is provided along the outer circumference of the filter screen mounting frame 10. A rubber sealing ring 9 is fitted in the installation groove. The outer circumference of the rubber sealing ring 9 is in close contact with the inner wall of the collection tank 6. The rubber sealing ring 9 is used to provide a movable seal between the filter screen mounting frame 10 and the inner wall of the collection tank 6, preventing raw materials from being sucked into the vacuum pump 3 and then discharged into the external environment through the gap between the filter screen mounting frame 10 and the collection tank 6, thus protecting the working environment.

[0025] Multiple limiting blocks 13 are placed on the top of the filter screen mounting frame 10. One end of the limiting block 13 is installed on the inner wall of the collection tank 6. The limiting block 13 plays a limiting role in the upward movement of the filter screen mounting frame 10, thereby improving the stability of the filter screen mounting frame 10 sliding in the collection tank 6 after being subjected to force.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vacuum feeder for nylon filament processing, comprising a filter screen (14), a collection tank (6), and a vacuum pump (3), characterized in that, The collection tank (6) is provided with a filter screen mounting frame (10) inside. The filter screen (14) is installed inside the filter screen mounting frame (10). The filter screen mounting frame (10) is provided with a mounting shaft (12) above it. Both ends of the mounting shaft (12) pass through the collection tank (6) and extend to its outer side. Two symmetrically arranged cams (11) are fixedly sleeved on the surface of the mounting shaft (12). The mounting shaft (12) and the cams (11) are eccentrically positioned. The bottom of the two cams (11) contacts the top of the filter screen mounting frame (10). One end of the mounting shaft (12) is connected to a drive motor (1). The bottom of the filter screen mounting frame (10) is provided with multiple elastic mechanisms.

2. The vacuum feeder for nylon filament processing according to claim 1, characterized in that, The top of the collection tank (6) is equipped with a suction pipe (2), one end of which is connected to the air inlet of the vacuum pump (3). The side of the collection tank (6) is equipped with a suction pipe (5), and the filter screen mounting frame (10) is located between the suction pipe (2) and the suction pipe (5).

3. The vacuum feeding machine for nylon filament processing according to claim 1, characterized in that, The bottom of the collection tank (6) is provided with a discharge port, and the discharge port is matched with a discharge block plate (4).

4. The vacuum feeder for nylon filament processing according to claim 1, characterized in that, An installation groove is provided along the outer circumference of the filter screen mounting frame (10), and a rubber sealing ring (9) is fitted in the installation groove. The outer circumference of the rubber sealing ring (9) is in close contact with the inner wall of the collection tank (6).

5. A vacuum feeder for nylon filament processing according to claim 1, characterized in that, The elastic mechanism includes a fixed block (7), one end of which is installed on the inner wall of the collection tank (6). A sliding rod (16) is installed through the surface of the fixed block (7). A connecting block (15) is installed at the top of the sliding rod (16). The connecting block (15) is installed at the bottom of the filter screen mounting frame (10). A compression spring (8) is movably sleeved on the surface of the sliding rod (16). The two ends of the compression spring (8) are respectively installed on the surfaces of the connecting block (15) and the fixed block (7). A stop block (17) is installed at the bottom of the sliding rod (16).

6. A vacuum feeder for nylon filament processing according to claim 1, characterized in that, Multiple limiting blocks (13) are placed on the top of the filter screen mounting frame (10), and one end of the limiting block (13) is installed on the inner wall of the collection tank (6).

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