Automatic vibrating blanking device

Abstract

The utility model relates to an automatic vibration unloading device, include: the material box, be provided with the feed inlet on it, the lower extreme is provided with the discharge gate, the baffle hopper has two, inside side respectively rotatable setting in the both sides of discharge gate, two baffle hoppers can close the discharge gate, drive mechanism, connect two baffle hopper outside, drive two baffle hoppers rotate around the junction of material box, open or close the discharge gate, pneumatic vibration device, set up on the outer wall of material box, in the vertical direction high frequency low amplitude vibration continues, wherein, drive mechanism has self -locking function, adopts the pneumatic vibration of high frequency low amplitude, can effectively break the salt caking, avoid the blockage, drive mechanism realizes reliable self -locking through worm and worm, ensure that the baffle hopper closes the strictness, solve the problem of leakage thoroughly, combine the storage and the wall -hanging probe, realized the stable, continuous and accurate control of the unloading process, significantly improved the measurement precision and the automation level of salt bagging.

Description

Technical Field

[0001] This utility model relates to the field of vibration feeding technology, and more specifically, to an automatic vibration feeding device. Background Technology

[0002] In the industrialized packaging production of salt, automated bagging is key to improving efficiency and ensuring product quality. Currently, production lines commonly use intermediate hoppers as buffer and metering units, dispensing a fixed amount of salt into the packaging bags through a gate at the bottom. However, due to the unique physical and chemical properties of salt, the dispensing process generates many problems.

[0003] First, salt readily absorbs moisture from the air and clumps. During storage and transportation, tiny salt particles can agglomerate into larger, harder clumps due to humidity changes. These clumps can easily cause severe bridging or blockage at the discharge port of the hopper, with the salt clumps supporting each other above the outlet to form a stable arched structure, interrupting the feeding process. The traditional solution is for operators to frequently tap the outer wall of the hopper, but this is not only labor-intensive and inefficient, but the uncontrollable tapping force can also damage the hopper structure, and the noise generated worsens the working environment. Although some equipment is equipped with ordinary electric vibrators, their strong low-frequency, high-amplitude vibrations often cause the salt particles to break due to violent impact, producing more powder and potentially causing dust to fly, affecting product quality and posing potential industrial hygiene and safety problems.

[0004] Secondly, salt is highly corrosive to metal components. This poses a severe challenge to traditional cylinder-driven gate mechanisms. The cylinder's piston rod and seals are easily corroded and worn in salty environments, leading to seal failure, sluggish operation, or even jamming. More importantly, these drive mechanisms typically lack reliable self-locking functionality. When the gate closes to cut off material, the pressure of the salt above continues to act on the gate. If the drive system cannot self-lock, the gate can easily be "push open" by the material, causing continuous leakage and waste. This makes precise quantitative bagging impossible, resulting in the net weight of the packaged product exceeding or falling below the standard, leading to quality disputes and economic losses.

[0005] Furthermore, the fluidity and adhesiveness of salt pose challenges to stable and precise feeding. Fine salt particles adhere to the smooth inner wall of the hopper, forming a residue that poses a risk of material residue and cross-contamination. This also renders inventory calculations and quantitative control based on material level detection inaccurate. Occasionally, large chunks of the adhered salt layer may detach and mix into the feed stream, causing sudden fluctuations in the feed rate and introducing significant errors into simple measurement methods based on weight or time.

[0006] A vibrating hopper, as described in Chinese utility model patent CN204297401U, includes a hopper bin with an inlet at the top and an outlet at the bottom. A sliding baffle is installed at the outlet to restrict free discharge. A vibrating motor, a pair of symmetrically distributed electric push rods, and a plurality of pull rings are mounted on the side wall of the hopper bin. One end of each electric push rod is hinged to the side wall of the hopper bin, and the other end is connected to the edge of the sliding baffle away from the outlet. A plurality of supports are mounted on the side wall of the hopper bin to support the hopper. Although the sliding of the baffle can control the descent and termination of salt, and to some extent control the speed and quantity of salt discharge, the control precision is low, and problems such as clumping, wall adhesion, and arching are easily generated, resulting in poor performance for bagging salt. Utility Model Content

[0007] The main purpose of this invention is to propose an automatic vibrating feeding device that can precisely control the amount and speed of salt falling while solving the problems of clumping, sticking to the wall, and arching.

[0008] To solve the above-mentioned technical problems, this utility model proposes an automatic vibrating feeding device, comprising: a material box with a feeding port on the top and a discharging port at the bottom; two baffles, each rotatably disposed on both sides of the discharging port, the two baffles cooperating to close the discharging port; a drive mechanism connected to the outer sides of the two baffles, driving the two baffles to rotate around the connection point with the material box to open or close the discharging port; and a pneumatic vibration device disposed on the outer wall of the material box, continuously vibrating at high frequency and low amplitude in the vertical direction; wherein, the drive mechanism has a self-locking function.

[0009] In the above technical solution, the driving mechanism further includes: a vertical connecting rod, slidably mounted on the outer wall of the material box, capable of reciprocating in the vertical direction; two bucket connecting rods, rotatably connected to the outer sides of two buckets respectively, with one end of each bucket rotatably connected to the lower end of the vertical connecting rod; a rack, fixedly mounted on the vertical connecting rod, its length direction parallel to the length direction of the vertical connecting rod; a large gear, meshing with the rack, rotatably mounted on the outer wall of the material box; a small gear, meshing with the large gear, rotatably mounted on the outer wall of the material box; a connecting shaft, one end of which is mounted on the small gear, the connecting shaft rotating synchronously with the small gear; a worm gear, mounted on the end of the connecting shaft away from the small gear; a worm, rotatably mounted on the outer wall of the material box, meshing with the worm gear; and a motor, fixed on the outer wall of the material box, its output shaft connected to one end of the worm.

[0010] In any of the above technical solutions, the pneumatic vibration device further includes: a vibration cylinder, fixed to the outer wall of the material box, having a receiving cavity inside, and an exhaust port on its side wall; a vibration block, disposed inside the vibration cylinder, with its cross-section tightly fitted to the inner wall of the vibration cylinder; and an air cylinder, connected to the bottom surface of the receiving cavity through a pipe, continuously outputting compressed air into the receiving cavity; wherein the distance between the exhaust port and the top surface of the receiving cavity is greater than the height of the vibration block.

[0011] In any of the above technical solutions, the automatic vibration feeding device further includes: a storage probe, which is installed on the material box and is used to continuously detect the height of the salt in the material box in order to calculate the amount of salt output.

[0012] In any of the above technical solutions, the automatic vibrating feeding device further includes: auxiliary hooks, which are set at the lower end of the outer surface of the baffle, with the openings of the auxiliary hooks facing outwards, and there are two of them, which are symmetrically set on the two baffles respectively.

[0013] In any of the above technical solutions, there are two drive mechanisms, symmetrically arranged on the front and rear sides of the material box.

[0014] In any of the above technical solutions, the automatic vibration feeding device further includes: a wall-mounted probe, which is installed on the material box and continuously detects the distance between the inner wall of the material box and the wall-mounted probe.

[0015] Beneficial effects: The use of high-frequency, low-amplitude pneumatic vibration can effectively break up salt clumps and prevent blockages; the drive mechanism achieves reliable self-locking through a worm gear, ensuring tight closure of the baffle and completely solving the leakage problem; combined with the storage and wall-mounted probes, it realizes stable, continuous and precise control of the feeding process, significantly improving the metering accuracy and automation level of salt bagging. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the pneumatic vibration device of this utility model; Figure 3 This is a schematic diagram of the top structure of this utility model.

[0018] The annotations in the attached figures are explained as follows: 1. Material bin; 11. Feed inlet; 12. Discharge outlet; 2. Bucket; 3. Drive mechanism; 31. Vertical connecting rod; 32. Bucket connecting rod; 33. Rack; 34. Large gear; 35. Small gear; 36. Connecting shaft; 37. Worm gear; 38. Worm; 39. Motor; 4. Pneumatic vibration device; 41. Vibration cylinder; 411. Receiving cavity; 412. Exhaust port; 42. Vibrating block; 43. Cylinder; 5. Material storage probe; 6. Auxiliary hook; 7. Wall-mounted probe Detailed Implementation

[0019] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0021] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] This utility model proposes an automatic vibration feeding device.

[0025] The automatic vibratory feeding device of this application will be described in detail below through the following embodiments.

[0026] Example 1: like Figure 1 , 2 As shown, this embodiment proposes an automatic vibrating feeding device, including: a material box 1 with a feeding port 11 on its upper part and a discharging port 12 at its lower end; two baffles 2, each rotatably disposed on both sides of the discharging port 12, the two baffles 2 cooperating to close the discharging port 12; a drive mechanism 3 connected to the outer sides of the two baffles 2, driving the two baffles 2 to rotate around the connection point with the material box 1, opening or closing the discharging port 12; and a pneumatic vibration device 4 disposed on the outer wall of the material box 1, continuously vibrating at high frequency and low amplitude in the vertical direction; wherein, the drive mechanism 3 has a self-locking function.

[0027] During operation, salt is loaded into the feed hopper 1 through the upper inlet 11, and the lower outlet 12 is closed by two rotatable baffles 2 on the outside. The drive mechanism 3 is connected to the outside of the two baffles 2, driving them to rotate around the axis to control the size of the outlet 12, thereby controlling the discharge speed and discharge volume. The self-locking function keeps the baffles 2 stable in the open position and is not affected by the pneumatic vibration device 4. At the same time, the pneumatic vibration device 4 installed on the outer wall of the feed hopper 1 performs continuous high-frequency low-amplitude vibration in the vertical direction, which promotes the smooth and uniform discharge of the material in the hopper through the outlet 12, and can also shake off the clumps of salt and the salt particles hanging on the wall, effectively preventing blockage and bridging.

[0028] Example 2: This embodiment is a further improvement based on Embodiment 1.

[0029] like Figure 1As shown, in this embodiment, the drive mechanism 3 includes: a vertical connecting rod 31, slidably mounted on the outer wall of the material box 1, capable of reciprocating in the vertical direction; two baffle connecting rods 32, rotatably connected to the outer sides of two baffles 2 respectively, with one end of each baffle 2 rotatably connected to the lower end of the vertical connecting rod 31; a rack 33, fixedly mounted on the vertical connecting rod 31, its length direction parallel to the length direction of the vertical connecting rod 31; and a large gear 34, meshing with the rack 33. A small gear 35, meshing with a large gear 34, is rotatably mounted on the outer wall of the material box 1; a connecting shaft 36, one end of which is mounted on the small gear 35, and the connecting shaft 36 rotates synchronously with the small gear 35; a worm gear 37 is mounted on the end of the connecting shaft 36 away from the small gear 35; a worm 38 is rotatably mounted on the outer wall of the material box 1 and meshes with the worm gear 37; and a motor 39 is fixed to the outer wall of the material box 1, with its output shaft connected to one end of the worm 38. During operation, the motor 39 starts and drives the worm gear 38 to rotate. The worm gear 38 drives the worm wheel 37, which meshes with it, to rotate, thereby causing the connecting shaft 36 to rotate synchronously. The small gear 35 fixed on the connecting shaft 36 rotates accordingly and drives the large gear 34, which meshes with it. The large gear 34 then drives the rack 33, which meshes with it, to reciprocate vertically. The rack 33 is fixed on the vertical connecting rod 31, thereby driving the vertical connecting rod 31 to slide up and down synchronously. The lower end of the vertical connecting rod 31 is rotatably connected to the outer side of the two baffles 2 through two baffle connecting rods 32, thereby converting the linear motion of the vertical connecting rod 31 into the rotation of the two baffles 2 around their inner rotating shaft, thereby controlling the opening size of the discharge port 12, thereby controlling the discharge speed and discharge amount. And with the self-locking function, the baffles 2 remain stable in the open position and are not affected by the pneumatic vibration device 4.

[0030] Example 3: This embodiment is a further improvement based on any of the above embodiments.

[0031] like Figure 2 As shown, in this embodiment, the pneumatic vibration device 4 includes: a vibration cylinder 41, fixed to the outer wall of the material box 1, having a receiving cavity 411 inside, and an exhaust hole 412 on its side wall; a vibration block 42, disposed inside the vibration cylinder 41, with its cross-section tightly fitted to the inner wall of the vibration cylinder 41; and a cylinder 43, connected to the bottom surface of the receiving cavity 411 via a pipe, continuously outputting compressed air into the receiving cavity 411; wherein, the distance between the exhaust hole 412 and the top surface of the receiving cavity 411 is greater than the height of the vibration block 42.

[0032] When the pneumatic vibration device 4 is working, the cylinder 43 fixed to the outer wall of the material box 1 continuously inputs compressed air into the receiving cavity 411 at the bottom of the vibration cylinder 41 through the pipeline. Since the cross-section of the vibrating block 42 is in close contact with the cross-section of the receiving cavity 411, a sealed space is formed at the bottom of the receiving cavity 411. When compressed air is continuously input into this space, the air pressure pushes the vibrating block 42 upward. When the vibrating block 42 rises above the exhaust hole 412 on the side wall, the compressed air in the cavity is quickly discharged from the exhaust hole 412, causing the air pressure in the cavity to increase. The vibrating block 42 drops suddenly and, under the action of inertia, hits the upper wall of the receiving cavity 411 and falls back under the action of gravity. After it falls and hits the bottom of the receiving cavity 411 and blocks the exhaust port 412, the compressed air input by the cylinder 43 accumulates again in the closed space, pushing the vibrating block 42 to rise again, thus forming a cycle. Since the distance from the exhaust port 412 to the top surface of the receiving cavity 411 is always greater than the height of the vibrating block 42, it is ensured that the vibrating block 42 has enough acceleration space for each upward stroke, thereby generating continuous high-frequency low-amplitude mechanical vibration and transmitting it to the material box 1.

[0033] Example 4: This embodiment is a further improvement based on any of the above embodiments.

[0034] like Figure 3 As shown, in this embodiment, the automatic vibrating feeding device further includes: a material storage probe 5, which is an infrared distance sensor installed on the material bin 1, used to continuously detect the height of the salt in the material bin 1 to calculate the amount of salt output. The material storage probe 5 added to the automatic vibrating feeding device is installed on the material bin 1, and it indirectly calculates the cumulative amount of output material by continuously detecting the material accumulation height in the material bin 1, thereby realizing the monitoring and measurement of the feeding process.

[0035] Example 5: This embodiment is a further improvement based on any of the above embodiments.

[0036] like Figure 1 As shown, in this embodiment, the automatic vibrating feeding device further includes: auxiliary hooks 6, which are disposed at the lower end of the outer surface of the baffle 2. The auxiliary hooks 6 have outward openings and there are two of them, which are symmetrically disposed on the two baffles 2. During operation, they hook the bag opening to synchronously expand the bag opening as the baffle 2 opens, preventing the bag opening from loosening and closing, which could lead to salt leakage and substandard weight.

[0037] Example 6: This embodiment is a further improvement based on any of the above embodiments.

[0038] like Figure 3As shown, in this embodiment, there are two drive mechanisms 3, symmetrically arranged on the front and rear sides of the material box 1. The two drive mechanisms 3 operate synchronously, thereby transmitting the force evenly to both sides of the baffle 2, enabling it to rotate more smoothly around the axis. This reduces the shearing force between the shaft hole of the baffle 2 and the upper shaft of the material box 1, eliminates the off-center load or jamming that may occur with unilateral drive, ensures the smoothness and stability of the entire operation process, and extends the service life of the device.

[0039] Example 7: This embodiment is a further improvement based on any of the above embodiments.

[0040] like Figure 3 As shown, in this embodiment, the automatic vibration feeding device further includes a wall-hanging probe 7, which is installed on the material box 1 and continuously detects the distance between the inner wall of the material box 1 and the wall-hanging probe 7. The wall-hanging probe 7 is an infrared distance sensor installed on the material box 1. It monitors the real-time distance between itself and the inner wall of the material box 1 by continuously transmitting and receiving signals. When salt adheres to or arches on the inner wall of the box, this distance will decrease. The probe detects this change and can determine that the wall-hanging phenomenon has occurred, thereby activating the pneumatic vibration device 4 to break up the salt hanging on the wall.

[0041] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An automatic vibrating shakeout apparatus characterized by, include: The material box (1) has a feed inlet (11) on top and a discharge outlet (12) at the bottom. There are two baffles (2), and their inner sides are rotatably arranged on both sides of the discharge port (12). The two baffles (2) can cooperate to close the discharge port (12). The drive mechanism (3) is connected to the outside of the two baffles (2) and drives the two baffles (2) to rotate around the connection with the material box (1) to open or close the discharge port (12); A pneumatic vibration device (4) is installed on the outer wall of the material box (1) and continuously vibrates at a high frequency and low amplitude in the vertical direction; The drive mechanism (3) is self-locking.

2. The automatic vibrating feeding device according to claim 1, characterized in that, The drive mechanism (3) includes: The vertical connecting rod (31) is slidably disposed on the outer wall of the material box (1) and can reciprocate in the vertical direction; There are two bucket connecting rods (32), which are rotatably connected to the outer side of the two buckets (2) respectively. The ends of the two bucket connecting rods (32) away from the buckets (2) are rotatably connected to the lower end of the vertical connecting rod (31). A rack (33) is fixedly mounted on the vertical connecting rod (31), and its length direction is parallel to the length direction of the vertical connecting rod (31). A large gear (34) meshes with the rack (33) and is rotatably mounted on the outer wall of the hopper (1); The small gear (35) meshes with the large gear (34) and is rotatably mounted on the outer wall of the material box (1); A connecting shaft (36) is provided at one end on the pinion (35), and the connecting shaft (36) rotates synchronously with the pinion (35); A worm gear (37) is disposed at the end of the connecting shaft (36) away from the pinion (35); The worm (38) is rotatably mounted on the outer wall of the hopper (1) and meshes with the worm wheel (37); The motor (39) is fixed on the outer wall of the hopper (1), and its output shaft is connected to one end of the worm (38).

3. The automatic vibrating shakeout apparatus of claim 1 wherein, The pneumatic vibration device (4) includes: Vibrating cylinder (41) is fixed on the outer wall of the material box (1), and has a receiving cavity (411) inside and an exhaust hole (412) on its side wall; A vibrating block (42) is disposed inside the vibrating cylinder (41), and its cross-section is in close contact with the inner wall of the vibrating cylinder (41); The cylinder (43) is connected to the bottom surface of the receiving cavity (411) through a pipe and continuously outputs compressed air into the receiving cavity (411); The distance between the exhaust port (412) and the top surface of the receiving cavity (411) is greater than the height of the vibrating block (42).

4. The automatic vibrating feeding device according to claim 1, characterized in that, The automatic vibration feeding device further includes a storage probe (5), which is set on the material box (1) and is used to continuously detect the height of salt in the material box (1) to calculate the amount of salt output.

5. The automatic vibrating shakeout apparatus of claim 1 wherein, The automatic vibrating feeding device further includes: auxiliary hooks (6), which are set at the lower end of the outer surface of the baffle (2). The auxiliary hooks (6) have outward openings and there are two of them, which are symmetrically set on the two baffles (2).

6. The automatic vibrating feeding device according to claim 1, characterized in that, There are two drive mechanisms (3), which are symmetrically arranged on the front and rear sides of the material box (1).

7. The automatic vibrating shakeout apparatus of claim 1 wherein, The automatic vibration feeding device further includes a wall-mounted probe (7), which is installed on the material box (1) and continuously detects the distance between the inner wall of the material box (1) and the wall-mounted probe (7).

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