Automatic wrapping device for salted duck eggs

Abstract

The application discloses a kind of automatic material wrapping devices of salted duck egg, and relate to the pickling technical field of salted duck egg.The automatic material wrapping device of salted duck egg, including storage tank, the drum is equipped in the storage tank, the outer surface of drum is equipped with multiple partitions in tangential direction, the adjacent two partitions form material wrapping space, one end of material wrapping space is fixed with fixed end plate, and the other end is equipped with slidable movable end plate along axial direction;The partition includes main plate, is equipped with multiple groups of hollow hole one on main plate, and is slidably arranged with opening and closing plate on one side of main plate, is equipped with hollow hole two on opening and closing plate, and opening and closing plate is fixedly connected with movable end plate;The automatic material wrapping device of salted duck egg, by being equipped with multiple partitions on the outer surface of drum, material wrapping space is formed between adjacent partitions, when drum rotates, each material wrapping space sequentially passes through hole one opening station, scoops material station, material wrapping station and movable end plate opening station four stations, whole process does not need manual auxiliary transfer duck egg, production efficiency is high, and it is suitable for industrialization scale production.

Description

Technical Field

[0001] This invention relates to the field of salted duck egg pickling technology, specifically to an automatic coating device for salted duck eggs. Background Technology

[0002] Industrial salted duck egg pickling combines traditional techniques with modern production methods. Its core principle is that salt seeps into the egg through the pores of the shell, increasing the salt content of the egg white and decreasing the moisture content. The yolk, due to salt precipitation, accumulates fat, resulting in an oily and sandy texture. At the same time, it inhibits the growth of microorganisms to extend the shelf life. The complete process includes raw egg acceptance, candling and selection (removing eggs with broken yolks and cracks), brush spraying cleaning and disinfection (sodium hypochlorite or peracetic acid), hot air drying, and then entering the core pickling process. The mainstream method is the salt mud wrapping method.

[0003] For the salt mud coating method, workers typically mix the salt mud and place it in a bucket, then place each duck egg into the mud, coating the outer surface of the egg with a layer of salt mud. This method is labor-intensive. Patent CN118383539A discloses a highly efficient salting equipment and method for pickling salted duck eggs. Through the coordinated use of a pickling frame, jacket, and clamping rods, when the support frame, along with the jacket and duck eggs, moves to the lower left side of the pickling tank, only two clamping rods on the jacket press against the surface of the duck eggs. When the support frame moves to the lower right side of the pickling tank, under the action of the arc-shaped convex plate, two more clamping rods on the jacket move out and press against the surface of the duck eggs, while the previous two clamping rods retract into the jacket. This changes the clamping position on the duck egg surface, preventing the clamping position from failing to effectively adhere to the mud slurry during the pickling process, thus improving the pickling effect.

[0004] However, this equipment requires a clamp, multiple clamping rods, and a corresponding arc-shaped convex plate drive structure for each duck egg. Furthermore, to overcome the problem of mud not adhering to the clamping area, the clamping rods must be continuously extended and retracted, and the clamping position changed during operation. This results in numerous moving parts, complex transmission relationships, high manufacturing costs, and inconvenient assembly and maintenance. Simultaneously, each duck egg must be clamped individually and moved through the pickling tank with the support frame, leading to a long processing cycle per egg. The overall processing capacity is limited by the number of clamping stations, making it difficult to meet the needs of large-scale continuous production. In addition, the clamping rods directly press against the surface of the duck egg, and the clamping force is difficult to control precisely due to variations in egg size. Overly tight clamping can crack the eggshell, while overly loose clamping can cause the egg to fall off or move around, posing a risk of damage. Moreover, this equipment primarily immerses the duck egg in mud, and the thickness of the mud adhering to the egg surface depends on the mud concentration and immersion time, making it difficult to quantitatively control the amount of material. This results in uneven coating thickness, which does not fully match the requirement of uniform and dense coating thickness in the salt mud coating method. Therefore, there is an urgent need to provide an automatic coating device for salted duck eggs that has a simple structure, uniform and controllable coating thickness, and can achieve continuous and efficient operation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic coating device for salted duck eggs, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an automatic coating device for salted duck eggs, including a storage tank, a rotating drum is provided in the storage tank, a plurality of partitions are provided on the outer surface of the rotating drum along the tangential direction, a coating space is formed between two adjacent partitions, a fixed end plate is fixed at one end of the coating space, and a movable end plate is provided along the axial direction at the other end. The partition includes a main plate with multiple sets of hollow holes. A slidable opening and closing plate is provided on one side of the main plate with hollow holes. The opening and closing plate is fixed to the moving end plate. The opening and closing plate can slide in the axial direction of the main plate to form a state in which the hollow holes are opposite to or not opposite to the hollow holes. The automatic coating device for salted duck eggs includes four stations arranged in sequence: the hole one opening station, the scooping station, the coating station, and the moving end plate opening station. The moving end plate is in the open state in the area of ​​the moving end plate opening station, and the two hollow holes are in the opposite state in the area of ​​the hole one opening station. The storage tank is equipped with a duck egg feeding belt on one side and a guide plate on the other side. The discharge end of the duck egg feeding belt is located at the junction of the scooping station and the wrapping station, and the guide plate is located in the upper area of ​​the hole-opening station.

[0007] Furthermore, the main body plate is arranged along the tangential direction of the drum, and the end of the main body plate away from the drum is a curved section, which is used to scoop up the packaged material in the area of ​​the scooping station.

[0008] Furthermore, a fixing ring is fixedly provided inside the storage tank on the side near the moving end plate, and an opening and closing assembly is installed on the moving end plate, which is supported on the fixing ring. It also includes a stepped ring, which is located on the side of the fixed ring away from the moving end plate. The stepped ring applies different pressures to the opening and closing assembly through changes in surface height, so that the moving end plate is close to or away from the partition.

[0009] Furthermore, the opening and closing assembly includes an opening and closing rod that passes through a fixed ring. A second spring is fitted onto one end of the opening and closing rod that passes through the fixed ring, and an end cap is installed on the end of the opening and closing rod near the second spring.

[0010] Furthermore, the stepped ring has a first high step on the side near the opening and closing component that is opposite to the scooping station and the wrapping station, a second middle step on the side near the opening and closing component that is opposite to the moving end plate opening station, and a third low step on the side near the opening and closing component that is opposite to the hole opening station.

[0011] Furthermore, the first higher order and the second middle order, the second middle order and the third lower order, and the third lower order and the first higher order are all connected by ramps.

[0012] Furthermore, the opening / closing plate and the moving end plate are connected by a connecting rod, and the main body plate is provided with a sliding groove adapted to the connecting rod.

[0013] Furthermore, a mesh hopper is provided in the wrapping space, and a vibration component is fixedly provided at one end of the storage tank near the fixed end plate. The vibration component includes a carrier ring, which is fixed to the inner wall of the storage tank. The side of the carrier ring near the fixed end plate is provided with a concave-convex part in the area opposite to the wrapping station and the upper part of the hole opening station. The vibration assembly also includes a reciprocating rod, one end of which is fixed to the net bucket, and the other end of which passes through the fixed end plate. A head is fixed at the end of the reciprocating rod that passes through the fixed end plate, and a spring is provided between the head and the fixed end plate.

[0014] Furthermore, a drive assembly is installed on one side of the storage tank, the drive assembly being used to drive the drum to rotate; Furthermore, a duck egg feeding belt is provided below the side of the storage tank near the guide plate to receive the duck eggs discharged from the guide plate.

[0015] The present invention has the following beneficial effects: (1) The automatic coating device for salted duck eggs is formed by setting multiple partitions on the outer surface of the drum and forming a coating space between adjacent partitions. When the drum rotates, each coating space passes through four stations in sequence: the hole opening station, the scooping station, the coating station and the moving end plate opening station. This realizes continuous and automated operation of scooping, egg feeding, coating, mud discharge and duck egg discharge. No manual assistance is required to transfer duck eggs throughout the process. It has high production efficiency and is suitable for industrial-scale production.

[0016] (2) The automatic coating device for salted duck eggs uses a sequence of first discharging mud and then discharging duck eggs: at the opening position of the moving end plate, the liquid in the hopper-shaped space is discharged and flows back to the storage tank, while the duck eggs are held in the hopper-shaped space by the partition; after turning to the opening position of hole one, the remaining liquid leaks down through the second and first perforated holes, and the duck eggs roll down the inclined partition to the guide plate at the upper part of the opening position of hole one. This ensures that the mud is discharged first when the duck eggs are fed, avoiding the mud from entering the guide plate and feeding channel with the duck eggs and causing pollution and blockage. It eliminates the need for frequent shutdowns for cleaning, and the feeding channel is clean and the operation is stable.

[0017] (3) The automatic coating device for salted duck eggs is fixedly connected to the moving end plate by the opening and closing plate and linked by the connecting rod. The axial displacement of the moving end plate can synchronously drive the opening and closing plate to slide, so that the second hollow hole coincides with or is offset from the first hollow hole. A set of transmission mechanisms can simultaneously complete the opening and closing of the moving end plate and the opening and closing of the hollow hole. The structure is compact, the operation is reliable, and the manufacturing cost is low. Through the cooperation of the first high step, the second middle step, and the third low step on the stepped ring with the opening and closing components, different pressures are applied to the opening and closing rod to control the compression and rebound of the second spring, thereby accurately controlling the opening degree of the moving end plate at each station. The steps are smoothly connected by ramps, so that the opening and closing rod moves smoothly between the steps without impact and the operation is stable and reliable. Attached Figure Description

[0018] Figure 1 This is an overall diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the storage tank of the present invention; Figure 3 This is an exploded view of the carrier ring, the drum, and the stepped ring of the present invention; Figure 4 This is a schematic diagram of the structure of the net bucket of the present invention; Figure 5 This is a first-view view of the partition and stepped ring of the present invention; Figure 6 This is a second-view view of the partition and stepped ring of the present invention; Figure 7 This is a diagram showing the initial open state of the moving end plate of the present invention; Figure 8 This is a diagram showing the state of the first and second hollow holes of the present invention facing each other; Figure 9 This is a diagram showing the state of the partition of the present invention inside the storage tank; Figure 10 This is a diagram showing the positional changes of duck eggs in the wrapping space of the present invention when the mesh bucket is not assembled.

[0019] In the diagram: 1. Duck egg feeding belt; 2. Duck egg unloading belt; 3. Storage trough; 4. Net hopper; 5. Stepped ring; 51. First high step; 52. Second middle step; 53. Third low step; 6. Vibration assembly; 61. Carrier ring; 611. Concave and convex parts; 62. Spring 1; 63. Reciprocating rod; 64. Head 1; 7. Partition plate; 71. Main body plate; 72. Hole 1; 73. Opening and closing plate; 74. Hole 2; 75. Connecting rod; 8. Moving end plate; 9. Opening and closing assembly; 91. Opening and closing rod; 92. Spring 2; 93. End 2; 10. Drive assembly; 11. Drum; 12. Guide plate; 13. Hole 1 opening station; 14. Scooping station; 15. Wrapping station; 16. Moving end plate opening station; 17. Fixed ring; 18. Fixed end plate. Detailed Implementation

[0020] The following is based on Figure 1 - Figure 10 This invention describes an automatic coating device for salted duck eggs provided in an embodiment of the invention.

[0021] Please refer to Figure 1 - Figure 3 This invention provides an automatic coating device for salted duck eggs, including a storage tank 3. A rotating drum 11 is provided inside the storage tank 3. Multiple partitions 7 are provided on the outer surface of the rotating drum 11 along the tangential direction. A coating space is formed between two adjacent partitions 7. A fixed end plate 18 is fixed at one end of the coating space, and a movable end plate 8 is provided on the other end along the axial direction. When the movable end plate 8 is close to the partition 7, it can form a bucket-shaped space with the partition 7 and the fixed end plate 18. When the rotating drum 11 rotates, this bucket-shaped space can scoop up the material in the storage tank 3. The duck eggs are coated in this bucket-shaped space, not directly in the storage tank 3.

[0022] Combination Figure 5 - Figure 8 As shown, the partition 7 is a double-layer structure, including a main plate 71 and an opening and closing plate 73. The opening and closing plate 73 is slidably disposed on one side of the main plate 71. The main plate 71 is provided with multiple sets of hollow holes 72, and the opening and closing plate 73 is provided with hollow holes 74. The opening and closing plate 73 is fixedly connected to the moving end plate 8. The opening and closing plate 73 can slide in the axial direction of the main plate 71 to form a state in which the hollow holes 74 are opposite to or not opposite to the hollow holes 72. When they are opposite, the hollow holes 72 and the hollow holes 74 can leak material. When they are not opposite, the bucket-shaped space can store material.

[0023] Reference Figure 10 When the drum 11 rotates, the automatic salted duck egg coating device includes four stations arranged in sequence: hole one opening station 13, material scooping station 14, coating station 15, and moving end plate opening station 16. At hole one opening station 13, the second perforated hole 74 and the first perforated hole 72 are opposite each other. At this time, the partition 7 is located inside the liquid in the storage tank 3. The rotating partition 7, due to the opening of the second perforated hole 74 and the first perforated hole 72, can reduce the resistance to rotation. At the material scooping station 14, the second perforated hole 74 and the first perforated hole 72 are not opposite each other. Thus, the hopper-shaped space can scoop up the material in the storage tank 3; the moving end plate 8 is in a state of being close to the partition plate 7 at both the scooping station 14 and the wrapping station 15, so that the hopper-shaped space can store material at both stations; the moving end plate 8 is in an open state at the area of ​​the moving end plate opening station 16, at which time the liquid material in the hopper-shaped space can flow out from the opening part of the moving end plate 8, and the duck egg falls at the upper section of the opening station 13 of hole one, at which time the partition plate 7 is in a downward tilted state, so that the duck egg can roll down along the tilted partition plate 7.

[0024] A duck egg feeding belt 1 is provided on one side of the storage tank 3. The discharge end of the duck egg feeding belt 1 is located at the junction of the scooping station 14 and the wrapping station 15, so that the duck eggs conveyed by the duck egg feeding belt 1 can enter the bucket-shaped space. A guide plate 12 is provided on the other side of the storage tank 3. The guide plate 12 is located in the upper area of ​​the hole-opening station 13, so as to receive the duck eggs rolling down the inclined partition 7. A duck egg unloading belt 2 is provided on the other side of the guide plate 12 to transport the duck eggs to the required position.

[0025] Preferred, such as Figure 3 and Figure 10 The main plate 71 is arranged along the tangential direction of the drum 11. The end of the main plate 71 away from the drum 11 is a curved section, which is used to scoop up the packaged material in the area of ​​the scooping station 14. It is worth noting that the partition 7 is arranged along the tangential direction of the drum 11 and is equipped with a curved section, which allows the partition 7 to scoop up more material.

[0026] Combination Figure 2 and Figure 5 As shown, in order to open and close the partition 7, a fixing ring 17 is fixed inside the storage tank 3 on the side near the moving end plate 8. An opening and closing assembly 9 is installed on the moving end plate 8. The opening and closing assembly 9 is supported on the fixing ring 17 and also includes a stepped ring 5. The stepped ring 5 is located on the side of the fixing ring 17 away from the moving end plate 8. The stepped ring 5 applies different pressures to the opening and closing assembly 9 through the change of surface height, so that the moving end plate 8 is close to or away from the partition 7.

[0027] Specifically, the opening and closing assembly 9 includes an opening and closing rod 91, which passes through a fixing ring 17. A spring 92 is fitted onto one end of the opening and closing rod 91 passing through the fixing ring 17, and an end cap 93 is installed on the end of the opening and closing rod 91 near the spring 92. The stepped ring 5 has a first high step 51 on the side near the opening and closing assembly 9 opposite to the scooping station 14 and the wrapping station 15. The stepped ring 5 has a second middle step 52 on the side near the opening and closing assembly 9 opposite to the moving end plate opening station 16. The stepped ring 5 has a third low step 53 on the side near the opening and closing assembly 9 opposite to the hole opening station 13.

[0028] In this embodiment, the opening and closing components 9 on each moving end plate 8 can rotate together with the drum 11. During its rotation, when it reaches the position of the first higher step 51, the spring 92 is compressed by the first higher step 51, and the opening and closing rod 91 is squeezed. Thus, at the scooping station 14 and the wrapping station 15, the moving end plate 8 is pressed against the partition plate 7, which can close one end of the bucket-shaped space, so that the bucket-shaped space can scoop material and wrap duck eggs (this stage is at the scooping station 14 and the wrapping station 15). When the opening and closing assembly 9 rotates to the area of ​​the second intermediate stage 52, the second spring 92 rebounds to the required length, and then pulls the moving end plate 8 through the opening and closing rod 91 (the moving end plate 8 will also pull the opening and closing plate 73, but the position of the opening and closing plate 73 has not yet reached the state where the second cutout hole 74 is opposite to the first cutout hole 72), so that the moving end plate 8 is pulled away from the partition plate 7, and then the moving end plate 8 opens. At this time, the liquid in the bucket-shaped space gradually flows out from the opening part of the moving end plate 8 into the interior of the storage tank 3. At this time, only duck eggs are left in the bucket-shaped space, and there is no liquid (this stage is at the moving end plate opening station 16). As the drum 11 continues to rotate, the opening and closing rod 91 reaches the area of ​​the third low stage 53. At this time, the second spring 92 fully rebounds, and the opening and closing plate 73 is continuously pulled by the moving end plate 8, so that the second hollow hole 74 is opposite to the first hollow hole 72. In this state, the liquid in the bucket-shaped space completely leaks down through the second hollow hole 74 and the first hollow hole 72, while the duck eggs roll down onto the guide plate 12 along with the inclined partition 7 (this stage is in the upper part of the hole one opening station 13). The second hollow hole 74 and the first hollow hole 72 enter the liquid in the storage tank 3 in a relative state, reducing the resistance of the partition 7 rotating in the liquid.

[0029] Preferably, the first higher order 51 and the second middle order 52, the second middle order 52 and the third lower order 53, and the third lower order 53 and the first higher order 51 are all connected by ramps to facilitate the movement and conversion of the end 2 93 between each order.

[0030] Preferably, the opening / closing plate 73 is connected to the moving end plate 8 by a connecting rod 75, and the main plate 71 is provided with a sliding groove that is adapted to the connecting rod 75.

[0031] In another embodiment, combined with Figure 2 - Figure 4A mesh hopper 4 is installed in the wrapping space (i.e., the bucket-shaped space). A vibration component 6 is fixedly installed at one end of the storage tank 3 near the fixed end plate 18. The vibration component 6 includes a carrier ring 61, which is fixed to the inner wall of the storage tank 3. The side of the carrier ring 61 near the fixed end plate 18 and the area opposite to the upper part of the wrapping station 15 and the opening station 13 of the hole are provided with a concave-convex part 611. The vibration component 6 also includes a reciprocating rod 63. One end of the reciprocating rod 63 is fixedly connected to the mesh hopper 4, and the other end of the reciprocating rod 63 passes through the fixed end plate 18. A head 64 is fixed at the end of the reciprocating rod 63 that passes through the fixed end plate 18. A spring 62 is provided between the head 64 and the fixed end plate 18.

[0032] In this embodiment, the duck eggs are wrapped inside the net bucket 4. As the drum 11 rotates, the head 64 of the reciprocating rod 63 rotates on the carrier ring 61. When the head 64 reaches the position of the concave and convex part 611 of the wrapping station 15, it can drive the reciprocating rod 63 to produce axial shaking, thereby realizing the axial shaking of the net bucket 4. When it shakes, it can make the duck eggs wrap better.

[0033] When the head 64 reaches the concave-convex part 611 at the upper section of the opening station 13, the net bucket 4 will also vibrate, thereby ensuring that the duck eggs can fall onto the guide plate 12 and ensure that they are fed.

[0034] Preferably, a drive assembly 10 is installed on one side of the storage tank 3. The drive assembly 10 is used to drive the drum 11 to rotate. The drive assembly 10 is formed by a drive motor and a reducer.

[0035] When in use (working), the drum 11 rotates, driving each material wrapping space to pass through four stations in sequence along the circumference: hole opening station 13, scooping station 14, wrapping station 15, and moving end plate opening station 16. Each time the drum 11 rotates once, each material wrapping space completes a complete cycle of scooping material, feeding eggs, wrapping material, discharging mud, and discharging duck eggs.

[0036] At the scooping station 14, the curved section of the partition 7 extends into the liquid material in the storage tank 3, scooping the mud material into the bucket-shaped material-coating space. At this time, the moving end plate 8 is pressed against the partition 7 to close one end of the bucket-shaped space. The second perforation 74 and the first perforation 72 are staggered, and the bucket-shaped space can store material. The scooped mud material is retained in the bucket-shaped space.

[0037] At the coating station 15, the duck eggs conveyed by the duck egg feeding belt 1 fall from the boundary area between the scooping station 14 and the coating station 15 into the coating space and enter the mesh hopper 4. At this time, the moving end plate 8 is still in a closed state tightly attached to the partition plate 7, and the perforated holes are still staggered. The duck eggs and mud are sealed in the bucket-shaped space. At the coating station 15, the mesh hopper 4 generates axial reciprocating shaking, so that the mud is evenly coated on the surface of the duck eggs, completing the coating process.

[0038] At the moving end plate opening station 16, when the opening / closing rod 91 reaches the area of ​​the second intermediate stage 52, the spring 92 rebounds, pulling the moving end plate 8 open via the opening / closing rod 91. At this time, the liquid in the hopper-shaped space gradually flows out from the opened part of the moving end plate 8 and flows back into the storage tank 3. Only duck eggs remain in the hopper-shaped space, with almost no liquid. At this station, the duck eggs are held in the hopper-shaped space by the net hopper 4 and will not fall out.

[0039] At the opening station 13, when the opening / closing rod 91 reaches the area of ​​the third low step 53, the second spring 92 fully rebounds, pulling the opening / closing plate 73 via the moving end plate 8, causing the second perforated hole 74 to overlap with the first perforated hole 72. The residual liquid in the bucket-shaped space completely leaks down through the perforated holes and back into the storage tank 3. The duck eggs fall at the upper section of the opening station 13. At this time, the partition 7 is in a downward tilted state. Under the action of gravity and the vibration of the net bucket 4, the duck eggs roll down along the tilted partition 7, fall onto the guide plate 12, and slide onto the duck egg feeding belt 2, which transports them to the required position. The second perforated hole 74 and the first perforated hole 72 enter the liquid in the storage tank 3 in a relative state, which can reduce the resistance of the partition 7 rotating in the liquid.

[0040] In the net bucket embodiment, at the wrapping station 15, the head 64 of the reciprocating rod 63 of the net bucket 4 reaches the concave-convex part 611 of the wrapping station 15, causing the net bucket 4 to oscillate axially, so that the duck eggs are better wrapped; at the upper section of the hole-opening station 13, the head 64 reaches the concave-convex part 611 at this position, and the net bucket 4 vibrates to ensure that the duck eggs can fall onto the guide plate 12, ensuring the feeding.

[0041] In summary, the drum 11 rotates continuously, and each coating space cyclically performs the actions of scooping material at the scooping station, feeding eggs and coating material at the coating station, discharging mud at the moving end plate opening station, and draining residual mud and discharging duck eggs at the hole one opening station. This achieves continuous and automated production of salted duck egg coating, and the mud is discharged before the duck eggs are fed, so it will not contaminate the guide plate 12 and the feeding channel.

[0042] It should be noted that after using this device each day, a high-pressure water gun should be used to clean the inside and outside of the device to prevent mud from adhering to the device and making it unusable the next time.

Claims

1. An automatic coating device for salted duck eggs, characterized in that, Includes a storage tank (3), and a rotating drum (11) is provided inside the storage tank (3). Multiple partitions (7) are provided on the outer surface of the rotating drum (11) along the tangential direction. A wrapping space is formed between two adjacent partitions (7). A fixed end plate (18) is fixed at one end of the wrapping space, and a sliding moving end plate (8) is provided at the other end along the axial direction. The partition (7) includes a main plate (71), which has multiple sets of hollow holes (72). A slidable opening and closing plate (73) is provided on one side of the main plate (71). The opening and closing plate (73) has hollow holes (74). The opening and closing plate (73) is fixedly connected to the moving end plate (8). The opening and closing plate (73) can slide in the axial direction of the main plate (71) to form a state in which the hollow holes (74) are opposite to or not opposite to the hollow holes (72). The automatic coating device for salted duck eggs includes four stations arranged in sequence: hole one opening station (13), scooping station (14), coating station (15), and moving end plate opening station (16). The moving end plate (8) is in the open state in the area of ​​the moving end plate opening station (16), and the second hollow hole (74) and the first hollow hole (72) are in the opposite state in the area of ​​the hole one opening station (13). The storage tank (3) has a duck egg feeding belt (1) on one side and a guide plate (12) on the other side. The discharge end of the duck egg feeding belt (1) is located at the junction of the scooping station (14) and the wrapping station (15). The guide plate (12) is located in the upper area of ​​the hole-opening station (13).

2. The automatic coating device for salted duck eggs according to claim 1, characterized in that, The main plate (71) is arranged along the tangential direction of the drum (11), and the end of the main plate (71) away from the drum (11) is a curved section, which is used to scoop up the packaged material in the area of ​​the scooping station (14).

3. The automatic coating device for salted duck eggs according to claim 1, characterized in that, A fixing ring (17) is fixed inside the storage tank (3) on the side near the moving end plate (8). An opening and closing assembly (9) is installed on the moving end plate (8) and is supported on the fixing ring (17). It also includes a stepped ring (5), which is located on the side of the fixed ring (17) away from the moving end plate (8). The stepped ring (5) applies different pressures to the opening and closing assembly (9) through the change of surface height, forming a state in which the moving end plate (8) is close to or away from the partition (7).

4. The automatic coating device for salted duck eggs according to claim 3, characterized in that, The opening and closing assembly (9) includes an opening and closing rod (91), which passes through a fixing ring (17). A spring (92) is sleeved on one end of the opening and closing rod (91) that passes through the fixing ring (17), and an end cap (93) is installed on the end of the opening and closing rod (91) near the spring (92).

5. The automatic coating device for salted duck eggs according to claim 4, characterized in that, The stepped ring (5) has a first high step (51) on the side near the opening and closing component (9) opposite to the scooping station (14) and the wrapping station (15), a second middle step (52) on the side near the opening and closing component (9) opposite to the moving end plate opening station (16), and a third low step (53) on the side near the opening and closing component (9) opposite to the hole opening station (13).

6. The automatic coating device for salted duck eggs according to claim 5, characterized in that, The first higher order (51) and the second middle order (52), the second middle order (52) and the third lower order (53), and the third lower order (53) and the first higher order (51) are all connected by ramps.

7. The automatic coating device for salted duck eggs according to claim 5, characterized in that, The opening and closing plate (73) is connected to the moving end plate (8) by a connecting rod (75), and the main plate (71) is provided with a sliding groove that is adapted to the connecting rod (75).

8. The automatic coating device for salted duck eggs according to claim 1, characterized in that, The wrapping space is provided with a mesh hopper (4), and a vibration component (6) is fixed at one end of the storage tank (3) near the fixed end plate (18). The vibration component (6) includes a carrier ring (61), which is fixed to the inner wall of the storage tank (3). The side of the carrier ring (61) near the fixed end plate (18) and the area opposite to the wrapping station (15) and the upper part of the hole opening station (13) is provided with a concave-convex part (611). The vibration assembly (6) also includes a reciprocating rod (63), one end of which is fixed to the net bucket (4), and the other end of which passes through the fixed end plate (18). A head (64) is fixed at one end of the reciprocating rod (63) that passes through the fixed end plate (18), and a spring (62) is provided between the head (64) and the fixed end plate (18).

9. The automatic coating device for salted duck eggs according to claim 1, characterized in that, A drive assembly (10) is installed on one side of the storage tank (3), and the drive assembly (10) is used to drive the drum (11) to rotate.

10. The automatic coating device for salted duck eggs according to claim 1, characterized in that, The storage tank (3) is provided with a duck egg feeding belt (2) on the side below the guide plate (12) to receive the duck eggs discharged from the guide plate (12).

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