Vacuum suction machine

Abstract

The utility model discloses a vacuum material suction machine, which relates to the technical field of material conveying equipment and comprises a stock bin, a cleaning component is fixedly mounted at the bottom end of a rotating shaft, an end cover is fixedly mounted at the top of the stock bin, an exhaust pipe is fixedly mounted at the axis of the end cover, and a ball valve component is mounted on the exhaust pipe in a matched manner. According to the design scheme, through the design that the ball valve assembly is installed on the exhaust pipe in a matched mode, opening and closing of the exhaust pipe are automatically controlled through the ball valve assembly, so that the piston piece ascends or descends in the exhaust pipe, the piston piece drives the connecting rod to move in the containing groove through the pull rod, and when the connecting rod moves to the bottom end of the containing groove, the connecting rod can move in the containing groove. The fan blades are overturned inwards to be stored in the storage groove, the fan blades are prevented from rotating all the time in the material suction process, so that a switch of the cleaning rod can be automatically controlled, the cleaning rod is opened only when the filter screen cylinder needs to be cleaned, then the loss of the brush is reduced, the service life of the brush is prolonged, and the later maintenance cost of the equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of material conveying equipment technology, and in particular to a vacuum material conveyor. Background Technology

[0002] A vacuum feeder is a dust-free, closed-loop conveying device that uses vacuum suction to transport granular or powdery materials. Existing vacuum feeders are mainly used for conveying powdery and granular materials. During operation, the feeder's hopper is created by a vacuum pump, generating negative pressure that allows material to pass through a hose into the hopper. To ensure the material falls into the hopper, a filter is installed inside to prevent it from being sucked to the vacuum pump. However, during the feeding process, powdery or granular materials can adhere to the filter under the influence of airflow, causing filter blockage and preventing the feeder from feeding properly. Therefore, after a period of feeding, the filter needs to be backflushed and cleaned using a pulse valve before the machine can resume operation. This necessitates stopping the feeder for cleaning every so often, leading to production interruptions and preventing the equipment from feeding for extended periods, thus impacting production efficiency.

[0003] CN 220115680 U discloses a vacuum feeder, including a hopper and a vacuum pump. The hopper has a top cover fixed to the vacuum pump. A filter screen cylinder is positioned between the top cover and the hopper. A support rod is installed inside the filter screen cylinder, and a rotating shaft is rotatably connected to the support rod. One end of the rotating shaft passes through the filter screen cylinder and is fitted with a cleaning rod. A brush is mounted on the cleaning rod, which adheres to the surface of the filter screen cylinder. The feeder also includes fan blades mounted on the rotating shaft. When the vacuum pump draws air, the airflow drives the fan blades to rotate. With this structural design, the vacuum feeder can simultaneously draw material and clean the filter screen cylinder during operation, preventing dust from clogging the filter and affecting material drawing. This reduces the number of times the vacuum pump pauses during material drawing and improves material drawing efficiency.

[0004] However, the fan blades of the aforementioned vacuum feeder are constantly rotating during the feeding process, and the rotation and stopping of the fan blades cannot be freely controlled. When the filter screen cylinder does not need to be cleaned, the cleaning rod will also keep rotating around the filter screen cylinder, resulting in a short service life of the brushes on the cleaning rod and high maintenance costs for the equipment. Utility Model Content

[0005] In order to overcome the above-mentioned defects in the prior art, this utility model provides a vacuum suction machine.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: a vacuum feeder includes a hopper, an end cover fixedly installed on the top of the hopper, an air extraction pipe fixedly installed at the axial center of the end cover, a ball valve assembly fitted on the upper part of the air extraction pipe, an air extraction branch pipe connected in parallel at the top end of the air extraction pipe, a filter screen cylinder fixedly installed inside the hopper, a rotating shaft rotatably installed at the axial center of the filter screen cylinder, a cleaning component fixedly installed at the bottom end of the rotating shaft, a storage groove provided inside the rotating shaft, a connecting rod movably installed in the storage groove, fan blades hinged at both ends of the connecting rod, a pull rod movably installed at the top of the connecting rod, a piston plate fixedly installed at the top end of the pull rod, and the piston plate fitted inside the air extraction pipe.

[0007] Furthermore, the bottom of the storage slot is provided with a baffle, and the top of the baffle is provided with a chamfer.

[0008] Furthermore, a limiting platform is provided at the bottom of the fan blade near the connecting rod end.

[0009] Furthermore, a turntable is provided at the top of the connecting rod, the pull rod is rotatably mounted on the turntable, a limiting mesh is slidably mounted on the pull rod, and the limiting mesh is fixedly mounted at the bottom of the suction pipe.

[0010] Furthermore, the cleaning assembly includes a cleaning rod, the center of which is fixedly mounted at the bottom of the rotating shaft. The shape of the cleaning rod matches the filter cylinder. A brush is fixedly mounted on the side of the cleaning rod near the filter cylinder. Both ends of the cleaning rod are rotatably connected to the top of the filter cylinder.

[0011] The beneficial effects of this utility model are that the design of this utility model uses a ball valve assembly installed on the upper part of the suction pipe. The ball valve assembly automatically controls the opening and closing of the suction pipe, so that the piston plate rises or falls in the suction pipe. The piston plate drives the connecting rod to move in the receiving groove through the pull rod. When the connecting rod moves to the bottom of the receiving groove, the fan blade flips inward and is stored in the receiving groove, avoiding the fan blade from rotating continuously during the suction process. This allows for automatic control of the cleaning rod's opening and closing, opening only when the filter cylinder needs to be cleaned, thereby reducing brush wear, extending the brush's service life, and reducing the later maintenance costs of the equipment. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is the front view of the present invention;

[0015] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0016] Figure 4 for Figure 3 A structural diagram showing the middle fan blades in their retracted state;

[0017] Figure 5 for Figure 3 A magnified view of a portion of region B in the middle.

[0018] In the diagram: 1. Hopper, 2. End cap, 3. Suction pipe, 4. Ball valve assembly, 5. Suction branch pipe, 6. Filter screen cylinder, 7. Rotary shaft, 8. Storage trough, 81. Baffle, 9. Connecting rod, 91. Turntable, 10. Fan blade, 101. Limiting platform, 11. Pull rod, 12. Piston plate, 13. Limiting mesh plate, 14. Cleaning rod, 15. Brush. Detailed Implementation

[0019] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0020] according to Figure 1-5 As shown, a vacuum feeder includes a hopper 1. An end cover 2 is bolted to the top of the hopper 1. An air extraction pipe 3 is fixedly installed at the axial center of the end cover 2. The air extraction pipe 3 is connected to a vacuum pump. A ball valve assembly 4 is fitted onto the upper part of the air extraction pipe 3. The ball valve assembly 4 is an electric ball valve, which automatically controls the opening and closing of the air extraction pipe 3. An air extraction branch pipe 5 is connected in parallel at the top of the air extraction pipe 3. A filter screen cylinder 6 is fixedly installed inside the hopper 1. A rotating shaft 7 is rotatably installed at the axial center of the filter screen cylinder 6 via a bearing. A cleaning component is fixedly installed at the bottom end of the rotating shaft 7. A storage groove 8 is provided inside the rotating shaft 7. A connecting rod 9 is movably installed in the storage groove 8. Fan blades 10 are hinged to both ends of the connecting rod 9. A pull rod 11 is movably installed at the top of the connecting rod 9. A piston plate 12 is fixedly installed at the top of the pull rod 11. The piston plate 12 is slidably installed inside the air extraction pipe 3.

[0021] In this embodiment, the bottom of the storage slot 8 is provided with a baffle 81, and the top of the baffle 81 is provided with a chamfer. The connecting rod 9 moves downward in the storage slot 8 and contacts the baffle 81. Under the action of the chamfer at the top of the baffle 81, the fan blade 10 slowly flips inward. Finally, the fan blade 10 flips inward by 90 degrees and falls to the bottom of the storage slot 8. The bottom of the fan blade 10 near the connecting rod 9 is provided with a limiting platform 101. When the fan blade 10 flips to the horizontal position, the limiting platform 101 contacts the bottom of the connecting rod 9. The limiting platform 101 keeps the fan blade 10 in a horizontal state. The top of the connecting rod 9 is provided with a turntable 91 and a pull rod 11. The filter is rotatably mounted on the turntable 91. A limiting mesh 13 is slidably mounted on the pull rod 11. The limiting mesh 13 is fixedly mounted at the bottom end of the suction pipe 3. The filter mesh limits the piston plate 12 to prevent the piston plate 12 from coming out of the suction pipe 3. During the suction process, the piston plate 12 moves upward in the suction pipe 3. The pull rod 11 pulls the connecting rod 9 upward until the top of the connecting rod 9 contacts the top of the receiving groove 8. At this time, the fan blade 10 is in the open state. Under the action of the airflow, the fan blade 10 drives the rotating shaft 7 to rotate on the filter cylinder 6, thereby driving the cleaning component to clean the filter cylinder 6.

[0022] In this embodiment, the cleaning component includes a cleaning rod 14, which is fixedly installed at the bottom of the rotating shaft 7 at its center. The shape of the cleaning rod 14 matches that of the filter cylinder 6. A brush 15 is fixedly installed on the side of the cleaning rod 14 near the filter cylinder 6. The two ends of the cleaning rod 14 are rotatably connected to the top of the filter cylinder 6. When the fan blade 10 drives the rotating shaft 7 to rotate, the cleaning rod 14 rotates synchronously with the rotating shaft 7, thereby cleaning the filter cylinder 6 through the brush 15 and preventing the filter cylinder 6 from becoming clogged.

[0023] In use, this invention automatically controls the opening and closing of the suction pipe 3 via the ball valve assembly 4. When the ball valve assembly 4 is open, the piston plate 12 is sucked to the upper end of the suction pipe 3. The piston plate 12 drives the connecting rod 9 to rise in the receiving groove 8 via the pull rod 11, causing the fan blade 10 to disengage from the baffle 81. Under the action of gravity, the fan blade 10 flips outward to a horizontal state, thereby causing the fan blade 10 to drive the cleaning rod 14 to rotate through the airflow. The brush 15 cleans the filter cylinder 6. After the filter cylinder 6 is cleaned, the ball valve assembly 4 is closed, and the piston plate 12 moves to the bottom end of the suction pipe 3 under the action of gravity. The connecting rod 9 moves to the bottom end of the receiving groove 8 simultaneously, and the fan blade 10 flips inward and is stored in the receiving groove 8. This prevents the fan blade 10 from rotating continuously during the suction process, thus automatically controlling the opening and closing of the cleaning rod 14, which is only opened when the filter cylinder 6 needs to be cleaned. This reduces the wear and tear on the brush 15, extends the service life of the brush 15, and reduces the later maintenance costs of the equipment.

[0024] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A vacuum feeder, comprising a hopper (1), characterized in that: An end cap (2) is fixedly installed on the top of the hopper (1). An air extraction pipe (3) is fixedly installed at the center of the end cap (2). A ball valve assembly (4) is installed on the upper part of the air extraction pipe (3). An air extraction branch pipe (5) is connected in parallel at the top of the air extraction pipe (3). A filter screen cylinder (6) is fixedly installed inside the hopper (1). A rotating shaft (7) is rotatably installed at the center of the filter screen cylinder (6). A cleaning component is fixedly installed at the bottom of the rotating shaft (7). A storage groove (8) is provided inside the rotating shaft (7). A connecting rod (9) is movably installed in the storage groove (8). Fan blades (10) are hinged at both ends of the connecting rod (9). A pull rod (11) is movably installed at the top of the connecting rod (9). A piston plate (12) is fixedly installed at the top of the pull rod (11). The piston plate (12) is installed in the air extraction pipe (3).

2. The vacuum material feeding machine according to claim 1, characterized in that, The bottom of the storage slot (8) is provided with a baffle (81), and the top of the baffle (81) is provided with a chamfer.

3. A vacuum material feeding machine according to claim 2, characterized in that, The bottom of the fan blade (10) near the connecting rod (9) is provided with a limiting platform (101).

4. A vacuum material feeding machine according to claim 3, characterized in that, The top of the connecting rod (9) is provided with a turntable (91), the pull rod (11) is rotatably mounted on the turntable (91), and a limiting mesh (13) is slidably mounted on the pull rod (11). The limiting mesh (13) is fixedly mounted on the bottom end of the suction pipe (3).

5. A vacuum feeder according to any one of claims 1-4, characterized in that, The cleaning assembly includes a cleaning rod (14), which is fixedly installed at the bottom of the rotating shaft (7) at its center. The shape of the cleaning rod (14) matches that of the filter cylinder (6). A brush (15) is fixedly installed on the side of the cleaning rod (14) near the filter cylinder (6). Both ends of the cleaning rod (14) are rotatably connected to the top of the filter cylinder (6).

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