Vacuum suction machine

Abstract

The utility model discloses a vacuum material suction machine which comprises a hopper, a discharging port is formed in the lower end of the hopper, an opening and closing device is arranged at the discharging port, the upper end of the hopper is closed and provided with a vacuum generating device, a feeding pipe is arranged on the side wall of the hopper, an annular elastic part is arranged in the hopper, and the opening and closing device is connected with the opening and closing device. The upper end and the lower end of the elastic part are fixedly connected with the inner side wall of the hopper. The middle of the elastic part is driven by a driving mechanism to move in the radial direction of the hopper. The utility model aims to provide a vacuum material suction machine which can improve the mobility of materials in the vacuum material suction machine.

Description

Technical Field

[0001] This utility model relates to the field of vacuum material suction equipment, specifically a vacuum material suction machine. Background Technology

[0002] The vacuum feeder uses negative pressure generated by a vacuum generator to suck powder and granules into the hopper. After the powder and granules are sucked in, the originally closed outlet at the bottom of the hopper opens, and the powder and granules fall out from the outlet, thus conveying the powder and granules.

[0003] When powders, granules, and other materials are stored in the hopper, they may clump together due to friction and cohesion between particles. This can affect the flowability of the powder, leading to poor discharge, reduced production efficiency, and even equipment failure. Utility Model Content

[0004] The purpose of this invention is to address the above problems by providing a vacuum feeder that can improve the flowability of materials within the vacuum feeder.

[0005] To achieve the above objectives, the present invention employs a vacuum feeder, comprising a hopper with a discharge port at its lower end and an opening / closing device at the discharge port. The upper end of the hopper is closed and equipped with a vacuum generating device. A feed pipe is provided on the side wall of the hopper. An annular elastic section is provided inside the hopper, with its upper and lower ends fixedly connected to the inner side wall of the hopper. The middle part of the elastic section moves radially along the hopper under the drive of a driving mechanism. During the movement of the elastic section, the powder becomes loose, breaking the arched balance of the powder to ensure the flowability of the material during discharge.

[0006] Furthermore, the opening and closing device includes a lifting part disposed below the hopper and moving along the axial direction of the hopper. The upper end of the lifting part is provided with a blocking part for blocking the discharge port. The upper end of the blocking part is provided with an inserting rod. As the inserting rod moves with the lifting part, it can clear the powder and prevent the material from blocking the discharge port.

[0007] Furthermore, the upper surface of the sealing part is an arc extending upward from the center, so that the powder will not remain on the upper part of the sealing part.

[0008] Furthermore, the driving mechanism includes a rotating part disposed on the side wall of the hopper. The rotating part is configured as a ring concentric with the hopper and is driven by a motor to rotate around the axis of the hopper. The rotating part is provided with a protrusion extending from the side into the hopper, and the protrusion contacts the outer wall of the elastic part. When the rotating part rotates, the protrusion contacts different areas of the outer wall of the elastic part. The area of ​​the elastic part in contact with the protrusion deforms and extends inward into the hopper. When the protrusion rotates away, that area of ​​the elastic part will return to its original shape outward into the hopper due to its own elasticity and material pressure. This process loosens the powder and reduces dead corners.

[0009] The beneficial effects of this utility model are as follows: the elastic part moves radially along the hopper under the drive of the drive mechanism. During this process, the arch balance in materials such as powder and granules is effectively broken, making the material loose and ensuring that the material can flow smoothly in the hopper when it is output. Attached Figure Description

[0010] Figure 1 This is a side view of the hopper structure with the discharge port closed.

[0011] Figure 2 This is a side view of the hopper with the discharge port open.

[0012] The text labels in the figure represent: 1. Hopper; 2. Discharge port; 3. Vacuum generator; 4. Feed pipe; 5. Elastic part; 6. Lifting part; 7. Sealing part; 8. Inserting rod; 9. Rotating part; 10. Motor; 11. Protrusion. Detailed Implementation

[0013] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0014] Example 1, such as Figures 1-2 As shown, the structure of this embodiment is as follows: a vacuum feeder, which includes a hopper 1, a discharge port 2 at the lower end of the hopper 1, an opening and closing device at the discharge port 2, which can be a valve or the like, a vacuum generator 3 at the upper end of the hopper 1, which can be a vacuum generator, an exhaust fan or the like, a filter device at the air inlet of the vacuum generator 3, a back-blowing device such as a back-blowing airbag on the hopper 1 to clean the filter device, and a feed pipe 4 on the side wall of the hopper 1.

[0015] The hopper 1 is provided with an annular elastic part 5, which can be made of rubber or the like. The upper and lower ends of the elastic part 5 are fixedly connected to the inner sidewall of the hopper 1 by bolts or the like. At this time, a cavity is formed between the middle part of the elastic part 5 and the inner sidewall of the hopper 1. The middle part of the elastic part 5 moves radially along the hopper 1 under the drive of the drive mechanism, which can be a cylinder or the like that that moves radially along the hopper. In this embodiment, in order to reduce the number of drive mechanisms while pushing the elastic part 5 without dead angles, the drive mechanism includes a rotating part 9 provided on the sidewall of the hopper 1. The rotating part 9 is set as an annular shape concentric with the hopper 1. The upper and lower ends of the rotating part 9 are connected to the sidewall of the hopper 1 by bearings. The hopper 1 above and below the rotating part 9 is connected by a protective shell. An external gear is provided on the outer sidewall of the rotating part 9. The external gear meshes with the drive gear on the outer side of the hopper 1. The drive gear is set on the output shaft of the motor 10. By placing the motor 10 externally, the convenience of maintenance is improved.

[0016] The rotating part 9 is provided with a protrusion 11 extending inward to the hopper 1. The protrusion 11 is an arc shape with the center facing outward. The distance between the inner wall of the protrusion 11 and the axis of the hopper 1 is less than the distance between the inner wall of the rotating part 9 and the axis of the hopper 1. The radial dimension of the protrusion 11 along the hopper 1 is greater than the radial dimension of the cavity along the hopper 1 when no external force is applied. The protrusion 11 is disposed between the side wall of the hopper 1 and the elastic part 5. The protrusion 11 is in contact with the outer wall of the elastic part 5.

[0017] The opening and closing device includes a lifting part 6 located below the hopper 1. A linear actuator, such as a pneumatic cylinder or hydraulic cylinder, is installed on the outside of the hopper. The piston rod of the linear actuator moves axially along the hopper 1 and is connected to the lifting part 6. The lifting part 6 is beam-shaped. A sealing part 7 for blocking the discharge port is located at the upper end of the lifting part 6. A sealing ring or similar material can be installed at the connection between the discharge port 2 and the sealing part 7. An inserting rod 8 is located at the upper end of the sealing part 7, and the inserting rod 8 is axially aligned with the hopper 1. The upper surface of the sealing part 7 is an arc extending upwards from the center.

[0018] Specific working process: During material intake, the sealing part 7 rises to contact the discharge port 2, completely blocking it. During material discharge, the motor 10 drives the rotating part 9 to rotate around the hopper 1. Since the protrusion 11 extends inward into the hopper 1, when it contacts a certain area of ​​the elastic part 5, it moves that area inward into the hopper 1. When the protrusion 11 moves away from that area, it moves outward. This movement causes different areas of the elastic part to vibrate, breaking the arched balance in the powder, granules, etc., making the material loose and ensuring rapid discharge when the discharge port 2 opens. During material discharge, the sealing part 7 descends with the lifting part 6, opening the discharge port 2. During discharge, the sealing part 7 reciprocates with the lifting part 6 to clear the material through the inserting rod 8. During discharge, the sealing part 7 does not contact the discharge port 2.

[0019] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A vacuum feeder, comprising a hopper (1), wherein a discharge port (2) is provided at the lower end of the hopper (1), an opening and closing device is provided at the discharge port (2), the upper end of the hopper (1) is closed and a vacuum generating device (3) is provided, and a feed pipe (4) is provided on the side wall of the hopper (1), characterized in that, The hopper (1) is provided with an annular elastic part (5). The upper and lower ends of the elastic part (5) are fixedly connected to the inner side wall of the hopper (1). The middle part of the elastic part (5) moves radially along the hopper (1) under the drive of the driving mechanism.

2. The vacuum material feeding machine according to claim 1, characterized in that, The opening and closing device includes a lifting part (6) located below the hopper (1) and moving along the axial direction of the hopper (1). The upper end of the lifting part (6) is provided with a blocking part (7) for blocking the discharge port. The upper end of the blocking part (7) is provided with an inserting rod (8).

3. A vacuum material feeding machine according to claim 2, characterized in that, The upper end face of the sealing part (7) is an arc shape that extends upward from the middle.

4. A vacuum material feeding machine according to claim 1, characterized in that, The driving mechanism includes a rotating part (9) disposed on the side wall of the hopper (1). The rotating part (9) is configured as an annular shape concentric with the hopper (1). The rotating part (9) is driven by a motor (10) to rotate around the axis of the hopper (1). The rotating part (9) is provided with a protrusion (11) extending from the side into the hopper (1). The protrusion (11) contacts the outer wall of the elastic part (5).

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