Residual removal rotary bucket elevator

Abstract

The application discloses a residual-removing rotary bucket elevator and belongs to the technical field of foodstuff and feed processing machines. The elevator comprises a discharge box with a discharge port at the bottom, two conveying chains oppositely arranged in the discharge box, and rotary shafts for hingedly connecting the two sides of a rotary bucket to the corresponding conveying chains. An abutting ring is arranged eccentrically outside the rotary shaft, and a protrusion is arranged on the outer wall of the abutting ring. A liftable push plate is arranged in the discharge box, and an upwardly-inclined discharge surface and a concave-convex vibrating surface are sequentially arranged on the top of the push plate along the movement direction of the rotary bucket. When the conveying chains drive the rotary bucket to move horizontally, the push plate is at a first discharge position, the abutting ring moves along the discharge surface, the rotary bucket is driven to turn from a material-containing state to a discharging state, the push plate is at a second discharge position, the protrusion cooperates with the vibrating surface, the rotary bucket is driven to vibrate to realize secondary cleaning of the material in the rotary bucket. The application can clean the residual material in the rotary bucket on line without interrupting the production, effectively avoids cross contamination of the material, and improves the production efficiency and the product safety.

Description

Technical Field

[0001] This invention relates to the field of food and feed processing machinery technology, and in particular to a bucket elevator for removing residues. Background Technology

[0002] Bucket elevators are a type of general-purpose continuous conveying equipment. They carry materials through buckets suspended on a conveyor chain inside a closed shell, and can complete a combined horizontal-vertical-horizontal conveying process. They can also be equipped with single-point or multi-point unloading devices to achieve flexible unloading. They are widely used in many industries such as chemical, pharmaceutical, coal chemical, refractory materials, industrial activated carbon, metallurgy, industrial solid waste treatment, non-metallic mineral products, and pet supplies.

[0003] In recent years, the application scenarios of bucket elevators in the feed processing industry have continued to expand. However, conventional bucket elevators have significant technical shortcomings: during feed production, it is necessary to frequently switch between different types and formulas of materials, and powdery material residues easily adhere to the inner wall of the buckets, which can easily lead to cross-contamination between different materials, directly affecting the quality stability and hygiene safety of feed products. If manual cleaning of bucket residues is used, operators need to have qualifications for working at heights, which requires high skill levels, and the cleaning operation must be carried out by stopping the machine, which seriously restricts production efficiency, increases the company's operation and maintenance costs, and thus weakens the company's market competitiveness.

[0004] Therefore, how to achieve online automated residue removal after bucket unloading, effectively remove material residue in the bucket without interrupting production and avoid cross-contamination, has become a key technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to achieve online automated residue removal after the bucket is unloaded, effectively remove material residue in the bucket without interrupting production and avoid cross-contamination;

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] This invention is a residual bucket elevator, including a discharge box with a discharge port at the bottom. Two conveyor chains are arranged opposite each other inside the discharge box. Rotary shafts are provided on both sides of the bucket and are hinged to the corresponding conveyor chains. The conveyor chains are used to drive the bucket to move horizontally inside the discharge box.

[0008] An abutment ring is provided on the outer side of the bucket, wherein the rotating shaft is eccentrically positioned with respect to the abutment ring, and the outer wall of the abutment ring is provided with a protrusion;

[0009] The unloading box is equipped with a push plate; along the movement direction of the bucket, the top of the push plate is successively configured as an upwardly sloping unloading surface and a concave-convex vibrating surface;

[0010] The push plate is connected to the lifting mechanism, which is used to drive the push plate to move up and down to switch between the first unloading position and the second unloading position. The second unloading position is located above the first unloading position.

[0011] When the push plate is in the first unloading position, the conveyor chain drives the bucket to move in a straight line, the abutment ring moves relative to the unloading surface, and the bucket gradually changes from a horizontal loading state to a vertical unloading state.

[0012] When the push plate is in the second unloading position, the bucket continues to flip until the protrusion engages with the vibrating surface. The protrusion passes through the vibrating surface, causing the bucket to vibrate and unload a second time.

[0013] Furthermore, when the hopper is in a horizontal material-filling state, the center of the rotating shaft and the center of the abutment ring are on the same vertical line, and the center of the abutment ring is located directly below the rotating shaft.

[0014] Furthermore, when the bucket is in a horizontal material-filling state, the protrusion is provided on the outer wall of the abutment ring and is confined to the area where the horizontal forward direction of the bucket is perpendicular to the center of the abutment ring.

[0015] Furthermore, along the direction of movement of the bucket, the top of the push plate has a downward-sloping guide surface on one side of the vibration surface.

[0016] Furthermore, a nozzle is provided inside the unloading box. The nozzle is located above the guide front, and the orientation of the nozzle forms an obtuse angle with the direction of movement of the bucket. The nozzle can remove the residue in the bucket by blowing air downwards at an angle.

[0017] Furthermore, an air chamber is provided outside the unloading box, the air chamber is connected to an air pipe, the air pipe passes through the unloading box and is connected to the nozzle.

[0018] Furthermore, the inner wall of the unloading box is provided with two parallel upper and lower limiting bars, and the conveyor chain passes through the space between the limiting bars.

[0019] Furthermore, the lifting mechanism includes a slide rail disposed on the inner side wall of the unloading box, a slider is disposed on the slide rail in a vertically movable manner, and the slider is connected to the push plate through a connecting plate;

[0020] A secondary cylinder is hinged to the side wall of the unloading box. The output end of the secondary cylinder is connected to a connecting rod. The other end of the connecting rod passes through the side wall of the unloading box, the slide rail, and is connected to the slider.

[0021] Furthermore, the conveyor chain links are provided with extension plates, and the rotating shaft is hinged to the extension plates.

[0022] The beneficial effects of this invention are:

[0023] This elevator relies on a two-stage lifting push plate and an eccentric abutment ring and a raised structure to complete normal unloading and optional secondary cleaning via vibration while the conveyor chain continuously drives the bucket. It can remove material residues adhering to the inner wall of the bucket without interrupting the production process, eliminating the need for manual shutdown and climbing for cleaning. This reduces labor costs and operational safety risks, avoids interference with the production rhythm during cleaning, and significantly improves the continuous operation capability and production efficiency of the equipment.

[0024] Furthermore, a dual residue removal system combining mechanical vibration desorption and airflow purging is constructed. The interaction between the raised and recessed vibrating surfaces causes the bucket to vibrate, causing powdery materials adhering to the inner wall to detach. Simultaneously, nozzles positioned in opposite directions deliver pulsed airflow into the bucket's interior, further removing fine powder residue. This dual action significantly improves the thoroughness of residue removal, effectively preventing cross-contamination between different types and formulations of materials, ensuring stable product quality and hygiene safety. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a structural schematic diagram of this embodiment. The dotted lines in the diagram represent the conveying trajectory of the bucket, and the arrows represent the conveying direction of the bucket.

[0027] Figure 2 This is a structural diagram of the unloading box.

[0028] Figure 3 yes Figure 2 A schematic diagram of the internal structure at point A;

[0029] Figure 4 This is a schematic diagram of the bucket's structure;

[0030] Figure 5 This is a side view of a dustpan;

[0031] Figure 6 This is a diagram showing the connection between the two buckets and the conveyor chain;

[0032] Figure 7 This is a schematic diagram of the push plate structure;

[0033] Figure 8 This is a schematic diagram of the structure of a two-stage cylinder;

[0034] Figure 9 This is a schematic diagram of the nozzle structure;

[0035] Figure 10 It is a diagram showing the interaction between the push plate and multiple buckets;

[0036] Figure 11 This is a flowchart illustrating this embodiment;

[0037] Figure 12 This is a schematic diagram of the structure of the nozzle blowing air into the bucket.

[0038] In the diagram: 1-Unloading box, 2-Unloading port, 3-Conveyor chain, 4-Bag, 5-Push plate, 6-Nozzle, 7-Secondary cylinder, 11-Limit stop bar, 31-Extension plate, 41-Rotating shaft, 42-Abutting ring, 43-Protrusion, 51-Unloading surface, 52-Vibrating surface, 53-Guide front, 61-Air tank, 62-Air pipe, 71-Slide rail, 72-Slider, 73-Connecting plate, 74-Connecting rod. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0040] See Figure 1-10 This embodiment is a residual bucket elevator, including a discharge box 1, a discharge port 2 at the bottom of the discharge box 1, two conveyor chains 3 arranged opposite each other on the front and rear sides of the discharge box 1, and rotating shafts 41 hinged to the corresponding conveyor chains 3 on the front and rear sides of the buckets 4. The conveyor chains 3 are used for circulating conveying within the elevator box; inside the discharge box 1, the conveyor chains 3 are used to drive the buckets 4 to move horizontally from right to left for unloading.

[0041] A retaining ring 42 is provided on the outer front side of the bucket 4, wherein the rotating shaft 41 and the retaining ring 42 are eccentrically arranged, and a protrusion 43 is provided on the outer wall of the retaining ring 42;

[0042] The unloading box 1 is equipped with a push plate 5, which is driven to rise and fall by a lifting mechanism. Along the movement direction of the bucket 4, the top of the push plate 5 is arranged from right to left as an upward unloading surface 51 and a concave-convex vibrating surface 52.

[0043] The conveyor chain 3 drives the bucket 4 to move linearly from right to left. After the pusher plate 5 rises once, it is in the first unloading position. The abutment ring 42 moves to the left relative to the unloading surface 51. The bucket 4 gradually changes from a horizontal loading state to a vertical unloading state. In other words, the opening of the bucket 4 rotates 90° counterclockwise from vertical upward to the opening facing left for unloading. The material is discharged from the unloading port 2 in a normal manner. It should be noted that the inside of the bucket 4 is a flared groove with an inclined wall. When the bucket 4 rotates to the position with the opening facing left, the material can slide down the inclined surface and be discharged to complete the material unloading.

[0044] After the push plate 5 rises for the second time, it is now in the second unloading position. As the bucket 4 moves from right to left, the second rise of the push plate 5 causes the bucket 4 to continue to rotate counterclockwise until the opening of the bucket 4 is tilted downwards. At this time, the protrusion 43 passes through the uneven vibration surface 52, and the bucket 4 vibrates, discharging the material attached to the inner wall of the bucket 4. Without interrupting production, by setting the opening of the bucket 4 to a tilted downwards position, the material is vibrated out of the unloading port 2. That is, the material residue in the bucket 4 is effectively removed by vibration, avoiding cross-contamination.

[0045] It should also be noted that this embodiment can only perform conventional unloading; specifically, after the push plate 5 rises to the first unloading position, it stops and passes through the unloading surface 51 and the concave-convex vibration surface 52 in sequence against the outer circumference of the ring 42. The push plate 5 only rotates the bucket 4 counterclockwise by 90° to unload the material. At this time, the bucket 4 does not vibrate when passing through the concave-convex vibration surface 52.

[0046] When the material in hopper 4 is changed, such as when unloading cat food to unloading dog food, hopper 4 needs to vibrate to unload the material. Vibration can effectively remove material residue in hopper 4 and avoid cross-contamination.

[0047] Furthermore, it should be noted that if the hopper 4 is used to unload material by vibration every time, it will not only accelerate the wear of the protrusion 43, but also generate a lot of noise. Therefore, in this embodiment, vibration unloading is selectively performed. Specifically, vibration unloading is only required when the material in the hopper 4 is changed.

[0048] See Figure 7 In some possible embodiments, along the direction of movement of the bucket 4, the top vibration surface of the push plate 5 is set as a downwardly oriented guide surface 53.

[0049] In this embodiment, after the bucket 4 completes the vibration unloading of the material by passing the vibration surface 52, it continues to move to the left and passes the inclined guide surface 53 along the abutment ring 42. At this time, the bucket 4 rotates clockwise to the state where the opening faces upward.

[0050] See Figure 6 In some possible embodiments, an extension plate 31 is provided on the link of the conveyor chain 3, and the rotating shaft 41 is hinged to the extension plate 31.

[0051] In this embodiment, the connection between the conveyor chain 3 and the rotating shaft 41 is achieved through the extension plate 31.

[0052] See Figure 5 In some possible embodiments, when the hopper 4 is in a horizontal material-filling state, the centers of the rotating shaft 41 and the abutment ring 42 are on the same vertical line, and the center of the abutment ring 42 is located directly below the rotating shaft 41.

[0053] In this embodiment, when the dustpan 4 is in the open-facing state, the connection between the rotating shaft 41 and the outer wall of the dustpan 4 is on the same vertical line as the center of the abutment ring 42, and the connection between the rotating shaft 41 and the outer wall of the dustpan 4 is located above the center of the abutment ring 42. This arrangement ensures that the dustpan 4 can be stably in the open-facing state.

[0054] See Figure 5 In some possible embodiments, when the hopper 4 is in a horizontal material-filling state, the protrusion 43 is provided on the outer wall of the abutment ring 42 and is confined to the area where the horizontal forward direction of the hopper 4 is perpendicular to the center of the abutment ring 42.

[0055] In this embodiment, the dustpan 4 moves in a straight line from right to left. The protrusion 43 is located at the upper left position of the outer wall of the ring 42, preferably at the 10 o'clock position. When the dustpan 4 is flipped to the state where the opening is obliquely downward, the protrusion 43 can rotate to cooperate with the concave and convex vibrating surface 52.

[0056] See Figure 3 , 9 12. In some possible embodiments, a nozzle 6 is provided inside the unloading box 1. The nozzle 6 is located above the guide front 53. The orientation of the nozzle 6 forms an obtuse angle with the direction of movement of the bucket 4. The nozzle 6 can remove the residue in the bucket 4 by blowing air downwards at an angle.

[0057] In this embodiment, the nozzle 6 is positioned above the guide face 53 and faces downward to the left. The nozzle 6 can perform pulsed air blowing on the residue in the hopper 4, further accelerating the removal of the residue in the hopper 4. Since the opening of the hopper 4 is in a horizontal unloading state facing left or diagonally downward to the right, the nozzle 6 blows air onto the hopper 4 diagonally downward, and the residue in the hopper 4 can be discharged from the unloading port 2, avoiding the residue from dispersing in the space where the unloading box 1 is located.

[0058] See Figure 3 , 9 In some possible embodiments, an air chamber 61 is provided outside the unloading box 1, the air chamber 61 is connected to an air pipe 62, the air pipe 62 passes through the unloading box 1 and is connected to a nozzle 6;

[0059] In this embodiment, the pulsed airflow is delivered to the nozzle 6 through the air bag 61 and the air pipe 62.

[0060] See Figure 3 In some possible embodiments, the inner wall of the unloading box 1 is provided with two parallel upper and lower limiting bars 11, and the conveyor chain 3 passes through the space between the limiting bars 11.

[0061] In this embodiment, the limiting stop bar 11 restricts the forward and backward movement of the conveyor chain 3 during the conveying process.

[0062] See Figure 8 In some possible embodiments, a slide rail 71 is provided on the inner side wall of the unloading box 1, and a slider 72 is provided on the slide rail 71 in a height-reducible manner. The slider 72 is connected to a push plate 5 through a connecting plate 73. A secondary cylinder 7 is hinged to the outer upper side wall of the unloading box 1. The output end of the secondary cylinder 7 is connected to a connecting rod 74, and the other end of the connecting rod 74 passes through the side wall of the unloading box 1, the slide rail 71 and connects to the slider 72.

[0063] In this embodiment, the secondary cylinder 7 can drive the push plate 5 to rise once and then rise a second time on the basis of the first rise. The connection between the slider 72 and the slide rail 71 allows the push plate 5 to only move up and down. By placing the secondary cylinder 7 outside the unloading box 1, the explosion-proof risk caused by conventional cylinders and magnetic switches being installed inside the unloading box 1 is solved.

[0064] In summary, the state of the hopper 4 is controlled by the secondary cylinder 7. One state realizes the normal dumping of the hopper 4, and the other state realizes the vibration dumping of the hopper 4. The nozzle is used to clean the residue inside and outside of the hopper 4.

[0065] See Figure 1 , 2 3. In some possible embodiments, the bottom of the unloading box 1 is provided with two unloading ports 2. Therefore, two liftable push plates 5 need to be configured inside the unloading box 1 so that the material can be unloaded at different unloading ports 2.

[0066] See Figure 11 In this embodiment, the residue removal steps of the elevator are as follows:

[0067] S1: The second-stage cylinder 7 rises once, at which time the push plate 5 is in the first unloading position, the bucket 4 moves to the left, and the abutment ring 42 rotates with the unloading surface 51. At this time, the bucket 4 rotates around the rotating shaft 41, and the bucket 4 is rotated counterclockwise from the horizontal state to the vertical state for unloading. S2: The second-stage cylinder 7 rises for the second time. At this time, the push plate 5 is in the second unloading position. The hopper 4 continues to move to the left. At this time, the hopper 4 rotates counterclockwise to the opening angled downwards. The protrusion 43 passes through the vibrating surface 52. The hopper 4 vibrates to discharge the residue. With the help of the pulse air blowing of the nozzle 6, the fine powder residue is further removed. At this time, the center of gravity of the hopper 4 is on the right side of the rotating shaft 41. S3: The second-stage cylinder 7 descends, and the bucket 4 continues to move to the left. At this time, the abutment ring 42 contacts the guide front 53. Under the action of the center of gravity of the bucket 4, the bucket 4 rotates clockwise around the rotating shaft 41 to the initial horizontal state. At this time, the center of gravity of the bucket 4 is directly below the rotating shaft 41.

Claims

1. A residual bucket elevator, characterized in that, Includes a discharge box (1), the bottom of which is provided with a discharge port (2), and two conveyor chains (3) are arranged opposite to each other inside the discharge box (1). The bucket (4) is provided with rotating shafts (41) on both sides that are hinged to the corresponding conveyor chains (3). The conveyor chains (3) are used to drive the bucket (4) to move horizontally inside the discharge box (1). An abutment ring (42) is provided on the outer side of the bucket (4), wherein the rotating shaft (41) is eccentrically arranged with the abutment ring (42), and a protrusion (43) is provided on the outer wall of the abutment ring (42). The unloading box (1) is provided with a push plate (5); along the movement direction of the bucket (4), the top of the push plate (5) is successively configured with an upwardly sloping unloading surface (51) and a concave-convex vibrating surface (52). The push plate (5) is connected to the lifting mechanism for transmission. The lifting mechanism is used to drive the push plate (5) to rise and fall and switch between the first unloading position and the second unloading position. The second unloading position is located above the first unloading position. When the push plate (5) is in the first unloading position, the conveying chain (3) drives the bucket (4) to move in a straight line, the abutment ring (42) moves relative to the unloading surface (51), and the bucket (4) gradually changes from a horizontal loading state to a vertical unloading state. When the push plate (5) is in the second unloading position, the bucket (4) continues to flip until the protrusion (43) cooperates with the vibration surface (52). The protrusion (43) passes through the vibration surface (52) and vibrates the bucket (4) for secondary unloading.

2. The residual removal bucket elevator according to claim 1, characterized in that, When the hopper (4) is in a horizontal material-filling state, the centers of the rotating shaft (41) and the abutment ring (42) are on the same vertical line, and the center of the abutment ring (42) is located directly below the rotating shaft (41).

3. The residual removal bucket elevator according to claim 1, characterized in that, When the hopper (4) is in a horizontal material-filling state, the protrusion (43) is provided on the outer wall of the abutment ring (42) and is limited to the area where the horizontal forward direction of the hopper (4) is vertically upward with respect to the center of the abutment ring (42).

4. The residual removal bucket elevator according to claim 1, characterized in that, Along the direction of movement of the bucket (4), the top of the push plate (5) is configured with a downward-sloping guide surface (53) on one side of the vibration surface (52).

5. The residual removal bucket elevator according to claim 1, characterized in that, The unloading box (1) is equipped with a nozzle (6), which is located above the guide front (53). The direction of the nozzle (6) forms an obtuse angle with the direction of movement of the bucket (4). The nozzle (6) can remove the residue in the bucket (4) by blowing air downwards at an angle.

6. The residual removal bucket elevator according to claim 5, characterized in that, An air chamber (61) is provided outside the unloading box (1). The air chamber (61) is connected to an air pipe (62). The air pipe (62) passes through the unloading box (1) and is connected to the nozzle (6).

7. The residual-removing bucket elevator according to claim 1, characterized in that, The inner wall of the unloading box (1) is provided with two parallel upper and lower limit bars (11), and the conveyor chain (3) passes through the space between the limit bars (11).

8. The residual-removing bucket elevator according to claim 1, characterized in that, The lifting mechanism includes a slide rail (71) disposed on the inner side wall of the unloading box (1), and a slider (72) is disposed on the slide rail (71) in a lifting manner. The slider (72) is connected to the push plate (5) through a connecting plate (73). A secondary cylinder (7) is hinged to the side wall of the unloading box (1). The output end of the secondary cylinder (7) is connected to a connecting rod (74). The other end of the connecting rod (74) passes through the side wall of the unloading box (1), and the slide rail (71) is connected to the slider (72).

9. The residual removal bucket elevator according to claim 1, characterized in that, The conveyor chain (3) has an extension plate (31) on its links, and the shaft (41) is hinged to the extension plate (31).

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