A silo unloading device

Abstract

This utility model provides a hopper unloading device, including a frame, a flaring mechanism, a unloading pipe, and a linkage mechanism. The flaring mechanism includes a long connecting rod, two short connecting rods, four rotating rods, and a movable rod. The upper end of the movable rod is hinged to the frame. The long connecting rod, rotating rod, and short connecting rods form a deformable ring structure that can open and close. The linkage mechanism drives the movable rod to rotate while simultaneously moving the unloading pipe vertically and passing through the deformable ring structure formed by the long connecting rod, rotating rod, and short connecting rods. During the insertion of the unloading pipe into the bag, the bag opening opens simultaneously, improving unloading efficiency. Furthermore, the linkage mechanism ensures that the opening action of the flaring mechanism and the downward movement of the unloading pipe are strictly synchronized and their relative positions are fixed. When the unloading pipe reaches the predetermined working depth, the flaring mechanism is also in its optimal opening state, firmly tightening the bag opening onto the flaring mechanism, providing reliable clamping force and preventing the bag from loosening under gravity or material impact.

Description

Technical Field

[0001] This utility model relates to the field of unloading equipment technology, specifically to a silo unloading device. Background Technology

[0002] In the packaging and unloading process of powder and granular materials, there are two major pain points in the traditional process of unloading materials from silos to bags:

[0003] 1. Defects in the method of expanding the bag opening: Existing equipment mostly uses mechanical grippers to directly clamp the bag opening and forcibly open it, which easily creates stress concentration in the local area of ​​the bag opening, leading to tearing of the bag (especially for flexible packaging such as woven bags and PE film bags), resulting in material leakage and packaging waste.

[0004] 2. Asynchronous insertion of the discharge pipe and expansion of the bag opening: The insertion of the discharge pipe into the bag and the expansion of the bag opening are usually controlled by independent drive mechanisms, making it difficult to precisely match the timing of the actions. If the bag opening is not fully open when the discharge pipe is inserted, material is prone to spillage; if the expansion mechanism operates too early, the bag opening will loosen, and the bag is prone to falling off during discharge. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present invention provides a silo unloading device to solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a hopper unloading device, including a frame, a flaring mechanism, an unloading pipe, and a linkage mechanism. The flaring mechanism includes two parallel long connecting rods, two parallel short connecting rods, four rotating rods hinged at both ends to the long and short connecting rods respectively, and a movable rod fixedly connected to the upper part of the middle of the long connecting rods. The upper end of the movable rod is hinged to the frame. The long connecting rods, rotating rods, and short connecting rods form an openable and closable deformable ring structure. The linkage mechanism drives the movable rod to rotate, thereby driving the unloading pipe to move vertically and pass through the deformable ring structure formed by the long connecting rods, rotating rods, and short connecting rods. Further, the linkage mechanism includes a cylinder fixedly connected to the lower part of the frame. The output end of the cylinder faces vertically and is fixedly connected to a linkage block. The unloading pipe is fixedly connected directly below the linkage block. The inlet end of the unloading pipe is located on the side and its inlet end is connected to the hopper unloading port through a corrugated hose.

[0008] Furthermore, the linkage block includes a guide post and a linkage cone coaxially fixedly connected below the guide post. The upper diameter of the linkage cone is larger than the lower diameter. The rotating rod is rotatably connected to a guide wheel on the side facing the linkage cone, and the outer circumferential surface of the guide wheel abuts against the outer surface of the linkage cone.

[0009] Furthermore, the frame includes a base and two vertical rods fixed below the base, with the upper end of the movable rod fixedly hinged to the lower end of the vertical rod; a guide ring is fixedly connected between the two vertical rods, and the guide ring is sleeved on the outside of the guide post and slidably connected to the guide post.

[0010] Furthermore, a solenoid valve is provided in the middle of the unloading pipe, and the solenoid valve is located below the inlet end on the side of the unloading pipe.

[0011] This utility model provides a silo unloading device. It has the following beneficial effects:

[0012] 1. The unloading pipe extends into the bag while simultaneously opening the bag's opening, improving unloading efficiency. Furthermore, the linkage mechanism ensures that the opening action of the flaring mechanism and the downward movement of the unloading pipe are strictly synchronized and their relative positions are fixed. When the unloading pipe reaches the predetermined working depth, the flaring mechanism is also in its optimal opening state, firmly tightening the bag's opening against it, providing reliable clamping force and preventing the bag from loosening under gravity or material impact.

[0013] 2. The deformable ring structure composed of long connecting rods, short connecting rods and rotating rods can apply uniform and stable radial tension to the opening of the bag when it opens, avoiding the local stress concentration caused by the traditional grippers directly clamping the opening of the bag. This effectively prevents the bag opening from tearing due to uneven force and extends the service life of the bag. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] In the diagram: 1. Frame; 11. Base; 12. Longitudinal rod; 13. Guide ring; 2. Flaring mechanism; 21. Long connecting rod; 22. Short connecting rod; 23. Rotating rod; 24. Movable rod; 25. Guide wheel; 3. Discharge pipe; 4. Linkage mechanism; 41. Cylinder; 42. Linkage block; 421. Guide column; 422. Linkage cone; 5. Solenoid valve; 6. Corrugated hose. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] See attached document Figure 1A hopper unloading device includes a frame 1, a flaring mechanism 2, an unloading pipe 3, and a linkage mechanism 4. The linkage mechanism 4 includes a cylinder 41 fixedly connected to the lower part of the frame 1. The output end of the cylinder 41 faces vertically and is fixedly connected to a linkage block 42. The unloading pipe 3 is fixedly connected directly below the linkage block 42. The inlet end of the unloading pipe 3 is located on the side and its inlet end is connected to the hopper unloading port through a corrugated hose 6. The cylinder 41 extends and retracts, causing the unloading pipe 3 to move vertically.

[0018] The flaring mechanism 2 includes two parallel long connecting rods 21, two parallel short connecting rods 22, four rotating rods 23 with their ends hinged to the long connecting rods 21 and the short connecting rods 22 respectively, and a movable rod 24 fixedly connected to the upper part of the middle of the long connecting rods 21. The upper end of the movable rod 24 is hinged to the frame 1. The long connecting rods 21, rotating rods 23, and short connecting rods 22 form a deformable ring structure that can be opened and closed. When the two movable rods 24 rotate outwards, they drive the two long connecting rods 21 to rotate. When the long connecting rod 21 moves away from each other, it drives the rotating rod 23 and the short connecting rod 22 to rotate, causing the long connecting rod 21, the rotating rod 23 and the short connecting rod 22 to open up the deformable ring structure, thereby tightening the opening of the lower material bag. Conversely, when the two long connecting rods 21 move closer to each other, the deformable ring structure closes. The linkage mechanism 4 drives the movable rod 24 to rotate, while driving the unloading pipe 3 to move vertically and pass through the center of the deformable ring structure formed by the long connecting rod 21, the rotating rod 23 and the short connecting rod 22.

[0019] The deformable ring structure, consisting of long connecting rod 21, short connecting rod 22 and rotating rod 23, can apply uniform and stable radial tension to the opening of the bag when it opens, avoiding local stress concentration caused by directly clamping the opening of the bag, effectively preventing tearing of the bag opening due to uneven force, and extending the service life of the bag.

[0020] As the unloading pipe 3 extends into the bag, it simultaneously opens the bag's opening, achieving both precise insertion of the unloading pipe 3 into the bag and reliable expansion and fixation of the bag's opening, thus improving unloading efficiency. Furthermore, the linkage mechanism 4 ensures that the opening action of the flaring mechanism 2 and the downward movement of the unloading pipe 3 are strictly synchronized and their relative positions are fixed. When the unloading pipe 3 reaches the predetermined working depth, the flaring mechanism 2 is also in its optimal open state, firmly tightening the bag's opening against it, providing reliable clamping force and preventing the bag from loosening under gravity or material impact.

[0021] In this embodiment, the linkage block 42 includes a guide post 421 and a linkage cone 422 coaxially fixedly connected below the guide post 421. The upper diameter of the linkage cone 422 is larger than the lower diameter. A guide wheel 25 is rotatably connected to the side of the rotating rod 23 facing the linkage cone 422, and the outer circumferential surface of the guide wheel 25 abuts against the outer surface of the linkage cone 422. When the cylinder 41 extends, the linkage cone 422 moves downward, pushing the guide wheel 25 to move outward, causing the movable rod 24 to rotate outward, thereby driving the long connecting rod 21, short connecting rod 22 and rotating rod 23 below to rotate and open, tightening the opening of the material bag. At the same time, the unloading pipe 3 below the linkage block 42 moves linearly to the unloading position. By using the cylinder 41 as a single power source, the linkage mechanism 4 cleverly converts the linear motion into the rotational motion required for widening and the linear motion required for unloading, ensuring consistency of action, direct transmission, reliable operation, and simple maintenance.

[0022] In addition, the frame 1 includes a base 11 and two vertical rods 12 fixed below the base 11. The upper end of the movable rod 24 is fixedly hinged to the lower end of the vertical rod 12. A guide ring 13 is fixedly connected between the two vertical rods 12. The guide ring 13 is sleeved on the outside of the guide post 421 and slidably connected to the guide post 421. The guide ring 13 plays a stabilizing and guiding role in the movement of the linkage block 42.

[0023] A solenoid valve 5 is installed in the middle of the unloading pipe 3. The solenoid valve 5 is located below the inlet end on the side of the unloading pipe 3. The solenoid valve 5 is synchronously connected to the control computer with the cylinder 41. Through a preset program, the cylinder 41 is first controlled to extend to the preset working position and then stop. The solenoid valve 5 is then synchronously controlled to open so that the material is unloaded through the unloading pipe 3. After the preset unloading time, the solenoid valve 5 is controlled to close and the cylinder 41 retracts to its original position.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A silo unloading device, characterized in that, The device includes a frame, a flaring mechanism, a discharge pipe, and a linkage mechanism. The flaring mechanism includes two parallel long connecting rods, two parallel short connecting rods, four rotating rods hinged at both ends to the long and short connecting rods respectively, and a movable rod fixedly connected to the upper part of the middle of the long connecting rods. The upper end of the movable rod is hinged to the frame. The long connecting rods, rotating rods, and short connecting rods together form a deformable ring structure that can be opened and closed. The linkage mechanism is used to drive the movable rod to rotate while simultaneously driving the discharge pipe to move vertically and pass through the deformable ring structure formed by the long connecting rods, rotating rods, and short connecting rods.

2. The silo unloading device as described in claim 1, characterized in that, The linkage mechanism includes a cylinder fixedly connected to the bottom of the frame. The output end of the cylinder is vertically oriented and fixedly connected to a linkage block. The unloading pipe is fixedly connected directly below the linkage block. The inlet end of the unloading pipe is located on the side and its inlet end is connected to the unloading port of the hopper through a corrugated hose.

3. The silo unloading device as described in claim 2, characterized in that, The linkage block includes a guide post and a linkage cone coaxially fixedly connected below the guide post. The upper diameter of the linkage cone is larger than the lower diameter. The rotating rod is rotatably connected to a guide wheel on one side facing the linkage cone, and the outer circumferential surface of the guide wheel abuts against the outer surface of the linkage cone.

4. A silo unloading device as described in claim 3, characterized in that, The frame includes a base and two vertical rods fixed below the base. The upper end of the movable rod is fixedly hinged to the lower end of the vertical rod. A guide ring is fixedly connected between the two vertical rods. The guide ring is sleeved on the outside of the guide post and slidably connected to the guide post.

5. A silo unloading device as described in claim 4, characterized in that, A solenoid valve is installed in the middle of the unloading pipe, and the solenoid valve is located below the inlet end on the side of the unloading pipe.

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