Duck egg powder screening machine

Abstract

The application provides a duck egg powder screening machine and relates to the field of screening machines. The machine comprises a supporting seat, a base and a screening disc. The base is sleeved on the top of the supporting seat, and the bottom of the base is connected with the top of the supporting seat through springs. The bottom of the base is provided with a vibrating motor. The base is funnel-shaped. The screening disc is detachably arranged at the top opening of the base. The outer side of the base is provided with a discharge pipe. The inlet of the discharge pipe is located below the screening disc. The bottom of the screening disc is wrapped with a screen mesh. The part where the screen mesh is attached to the outer wall of the screening disc is clamped between the screening disc and the base. An ultrasonic vibration head is arranged on the top outer wall of the base. The ultrasonic vibration head is used to transmit ultrasonic vibration energy to the base and the screening disc. The application has the effect of improving the screening efficiency of powder.

Description

Technical Field

[0001] This application relates to the field of powder screening machines, and in particular to a duck egg powder screening machine. Background Technology

[0002] Duck egg powder, or duck egg-shaped powder compact, is made from natural ingredients and refined using a process involving flower infusion and musk fixation. Before the powder is pressed into the shape of a duck egg through a mold, it needs to be sieved to make the powder finer and keep the oil content low.

[0003] Currently, vibrating screens are generally used to sieve powders. Specifically, the powder is placed on a screen, and then a vibrating motor is used to vibrate the screen, so that the powder passes through the screen automatically and quickly. This can effectively prevent the powder from clumping.

[0004] However, the vibration effect of a single vibrating motor on the screen is insufficient to meet the needs of industrial production, thus reducing the sieving efficiency of powder. Summary of the Invention

[0005] To improve the problem of poor sieving effect, this application provides a duck egg powder sieving machine.

[0006] This application provides a duck egg powder sieving machine, which adopts the following technical solution: The duck egg powder sieving machine includes a support base, a base, and a sieve disc. The base is sleeved on the top of the support base, and the bottom of the base is connected to the top of the support base by several springs. A vibration motor is provided at the bottom of the base. The base is funnel-shaped. The sieve disc is detachably disposed at the top opening of the base. A discharge pipe is provided on the outer side of the base, and the inlet of the discharge pipe is located below the sieve disc. A screen is wrapped around the bottom of the sieve disc, and the part of the screen that fits against the outer wall of the sieve disc is locked between the sieve disc and the base. An ultrasonic transducer is provided on the top outer wall of the base, and the ultrasonic transducer is used to transmit ultrasonic vibration energy to the base and the sieve disc.

[0007] By adopting the above technical solution, under the support of the spring, the base and the support seat can maintain a state of elastic connection that is separated from each other. In this way, the vibration energy generated by the vibrating motor can be transmitted to the screen plate to the maximum extent, so that the screen plate vibrates. At this time, the powder on the screen can be screened into the base and discharged out through the discharge pipe. Furthermore, the ultrasonic vibration energy generated by the ultrasonic transducer can effectively increase the vibration amplitude of the screen plate and the screen, so that the powder on the screen can complete the screening operation more quickly, improve the screening efficiency, and facilitate industrial promotion and use.

[0008] Optionally, the lower outer wall of the sieve disc is provided with a groove, and the bottom of the groove is provided with two first pressure rings, which are arranged vertically at intervals. The outer side of the sieve disc is provided with a pressure plate, which is connected end to end to form a ring. The inner wall of the pressure plate is provided with two second pressure rings, which are arranged vertically at intervals. The two first pressure rings and the two second pressure rings are arranged alternately. The middle part of the screen covers the bottom of the sieve disc, and the outer edge of the screen passes between the pressure plate and the sieve disc. The first pressure rings and the second pressure rings are used to press the outer edge of the screen.

[0009] By adopting the above technical solution, the screen mesh wraps around the bottom of the screen plate from bottom to top, thus covering the grooves on the outer edge of the screen mesh. At this point, the pressure plate is inserted into the screen plate from bottom to top, allowing the two first pressure rings and two second pressure rings to cooperate with each other, thereby reliably fixing the outer edge of the screen mesh. After the screen mesh is fixed, the screen plate can be placed into the base for powder sieving.

[0010] Optionally, one side of the second pressure ring is connected to the inner wall of the pressure plate, and the other side of the second pressure ring extends into the groove. The second pressure ring and the first pressure ring interfere with each other in the vertical direction.

[0011] By adopting the above technical solution, during the process of the pressure plate being fitted into the screen plate, the second pressure ring on the pressure plate and the first pressure ring on the screen plate will interfere. However, through a certain degree of compression deformation of the pressure plate, the two first pressure rings and the two second pressure rings can be set alternately. In this way, the outer edge of the screen can be reliably fixed between the pressure plate and the screen plate, thereby preventing the screen from falling off during the sieving process of the powder and ensuring the reliable performance of the sieving operation.

[0012] Optionally, the lower inner side of the pressure plate is provided with a receiving groove, the outer edge of the screen is elastic, the outer edge of the screen extends to the top of the pressure plate and then bends downward, the outer edge of the screen wraps around the outer wall of the pressure plate and folds into the receiving groove.

[0013] By adopting the above technical solution, after the outer edge of the screen is fixed by the pressure plate, the screen is bent downwards so that it can wrap around the outer wall of the pressure plate. Then the screen is bent again so that it can be pressed into the receiving groove. Under the elastic force of the outer edge of the screen, the fixing effect of the screen on the screen plate is effectively improved.

[0014] Optionally, a limiting ring is provided on the inner wall of the base, the bottom of the pressure plate is in contact with the top of the limiting ring, the outer wall of the sieve disc is separated from the inner wall of the base, and a plurality of latches are provided on the outer wall of the base, the latches being used to press down and lock the sieve disc.

[0015] By adopting the above technical solution, after the screen is fixed and the screen plate is placed into the base, the pressure plate will contact the limiting ring. At this time, the screen plate is in a preliminary fixed state. Then, the screen plate is locked by the lock, and the lock will exert a downward pressure on the screen plate, thereby causing a relative movement between the pressure plate and the screen plate, so that the screen can be more firmly fixed on the screen plate.

[0016] Optionally, the sieve disc is provided with a brush plate, the bristles at the bottom of the brush plate are in contact with the sieve mesh, the top of the brush plate is provided with a connecting rod, and an electric motor is provided above the sieve disc. The output shaft of the electric motor is connected to the connecting rod, and the electric motor is used to drive the brush plate to rotate.

[0017] By adopting the above technical solution, when the electric motor drives the brush plate to rotate, the bristles on the brush plate can scrape the screen, thereby preventing the powder from clogging on the screen and significantly improving the sieving efficiency of the powder.

[0018] Optionally, the support base is provided on a movable platform, and the movable platform is also provided with an L-shaped bracket. The vertical end of the bracket is connected to the movable platform, and the horizontal end of the bracket is located above the screen plate. The motor is located on the horizontal end of the bracket, and the horizontal end of the bracket can extend and retract horizontally. The brush plate moves synchronously with the horizontal end of the bracket and intermittently adheres to the inner wall of the screen plate.

[0019] By adopting the above technical solution, the support base and the base can be easily moved by the movable platform, thus adapting to different usage environments. The connection of the bracket ensures that the motor is in the accurate position and operates reliably, thereby ensuring that the brush plate can reliably brush the screen. Furthermore, when the brush plate and the screen disc are brought into contact through the contraction of the horizontal end of the bracket, the screen disc drives the brush plate to vibrate, thereby removing the powder that adheres to the brush plate and improving the brush plate's brushing efficiency on the screen.

[0020] Optionally, the connecting rod and the brush plate are connected by a thread, and the outer diameter of the brush plate is smaller than the inner diameter of the sieve disc.

[0021] By adopting the above technical solution, the connection strength between the brush plate and the connecting rod is improved, ensuring that the brush plate can reliably rotate under the drive of the motor.

[0022] Optionally, the bottom of the limiting ring is hinged with several movable rods, and a hydraulic rod is inserted inside the base. The hydraulic rod extends vertically in the opposite direction, and a movable plate is provided at the top of the hydraulic rod. One end of the movable rod is connected to the limiting ring, and the other end of the movable rod is located at the top of the movable plate. The hydraulic rod drives the movable plate to move back and forth in the vertical direction. The movable rod rotates around the hinge point and is either in contact with or away from the screen.

[0023] By adopting the above technical solution, the position of the movable plate is adjusted under the drive of the hydraulic rod, thereby changing the angle of the movable rod. This allows the movable rod to support the screen without affecting the sieving of the powder, preventing damage to the screen by the brush plate during the brushing process.

[0024] Optionally, when the push rod of the hydraulic rod is fully extended, the contact area between the movable rod and the movable plate is at its maximum and the movable rod is in a horizontal state; when the push rod of the hydraulic rod is fully retracted, the contact area between the movable rod and the movable plate is at its minimum and the movable rod is in an inclined state.

[0025] By adopting the above technical solution, when the movable rod is in a horizontal state, it can support the screen, and when the movable rod is in an inclined state, it can promote the movement of powder.

[0026] In summary, this application has the following beneficial effects:

[0027] 1. By combining the vibrating motor with the ultrasonic transducer, the vibration effect on the screen disc is effectively improved, thereby reliably improving the sieving efficiency of powder.

[0028] 2. Driven by the electric motor, the brush plate can reliably brush the screen, thereby further improving the sieving efficiency of powder.

[0029] 3. By extending and retracting the hydraulic rod, the movable plate is driven, thereby changing the state of the movable rod. When the movable rod is in a horizontal state, it can support the screen and ensure that the brushing action of the brush plate will not damage the screen. Attached Figure Description

[0030] Figure 1 This is a schematic perspective view of this application;

[0031] Figure 2 This is a reference diagram showing the exploded state of the support base and the base;

[0032] Figure 3 This is a reference diagram showing the explosion state of the sieve plate and the pressure plate;

[0033] Figure 4This is a cross-sectional view of the internal structure of the sieve plate and the pressure plate;

[0034] Figure 5 This is a schematic 3D diagram of the base;

[0035] In the diagram: 1. Support base; 10. Spring; 2. Base; 21. Vibration motor; 22. Discharge pipe; 23. Limiting ring; 24. Lock; 25. Movable rod; 26. Hydraulic rod; 27. Movable plate; 3. Screen plate; 31. Groove; 32. First pressure ring; 4. Screen mesh; 5. Ultrasonic vibrator; 6. Pressure plate; 61. Second pressure ring; 62. Receiving groove; 7. Brush plate; 71. Connecting rod; 72. Motor; 8. Movable platform; 80. Bracket. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] Figure 1 This is a schematic perspective view of this application. Figure 2 This is a reference diagram showing the exploded state of the support and base. See also... Figure 1 and Figure 2 The duck egg powder sieving machine includes a support base 1 mounted on a movable platform 8. A base 2, hollow and funnel-shaped, is located on top of the support base 1, with a closed bottom. The top of the support base 1 and the bottom of the base 2 are connected by a spring 10. A vibrating motor 21 is located at the bottom of the base 2. A discharge pipe 22 is installed on the outer wall of the base 2, angled and inserted into the bottom of the base 2. A sieve disc 3 is located at the top opening of the base 2, and several latches 24 are located on the outer side of the top of the base 2. When the sieve disc 3 is placed into the top opening of the base 2, it can be locked by these latches 24, thus forming a single unit with the base 2. At this time, the inlet of the discharge pipe 22 is located below the sieve disc 3. By pushing the movable platform 8, the support base 1, base 2, and sieve disc 3 can be quickly moved to a designated position, improving the adaptability of the sieving machine to different operating environments.

[0038] Figure 3 This is a reference diagram showing the explosion state of the sieve plate and pressure plate. See also... Figure 3 and combined Figure 2The lower outer wall of the sieve disc 3 has a groove 31, and the bottom of the groove 31 has two first pressure rings 32, which are spaced apart vertically. A pressure plate 6 is provided on the outer side of the sieve disc 3, with the ends of the pressure plate 6 connected to form a ring. Two second pressure rings 61 are provided on the inner wall of the pressure plate 6, which are also spaced apart vertically. A sieve mesh 4 is wrapped around the bottom of the sieve disc 3, with the middle part of the sieve mesh 4 overlapping the bottom end face of the sieve disc 3. This allows the sieve mesh 4 to sieve the powder after it is fitted with the sieve disc 3. When the middle part of the sieve mesh 4 covers the bottom of the sieve disc 3, the outer edge of the sieve mesh 4 extends to the outer side of the sieve disc 3. At this time, bending the sieve mesh 4 upwards will bring the outer edge of the sieve mesh 4 into contact with the outer wall of the sieve disc 3. In this case, the two first pressure rings 32 are located on the inner side of the sieve mesh 4.

[0039] Figure 4 This is a cross-sectional view of the internal structure of the sieve plate and pressure plate. See also... Figure 4 and combined Figure 3 After the outer edge of the screen 4 is bent for the first time, the pressure plate 6 is inserted from bottom to top onto the outer bottom of the screen plate 3. At this time, the two second pressure rings 61 are located on the outer side of the screen 4, and both second pressure rings 61 are located below the two first pressure rings 32, with the other side of the second pressure rings 61 extending into the groove 31. As the pressure plate 6 continues to move upward, due to the vertical interference between the first pressure ring 32 and the second pressure ring 61, the upper second pressure ring 61 will contact the lower first pressure ring 32. At this time, the first pressure ring 32 tends to resist the upward movement of the second pressure ring 61, and then increases the pushing force on the pressure plate 6, causing the first pressure ring 32 and the second pressure ring 61 to be squeezed together. Then, through the slight elastic deformation of the pressure plate 6, the upper second pressure ring 61 passes over the lower first pressure ring 32 and moves between the two first pressure rings 32. At this time, the two first pressure rings 32 will form a clamping effect on the upper second pressure ring 61. After the two first pressure rings 32 and the two second pressure rings 61 are alternately arranged, the outer edge of the screen 4 can be reliably pressed between the pressure plate 6 and the screen plate 3. The cooperation of the first pressure rings 32 and the second pressure rings 61 makes the outer edge of the screen 4 pass through the pressure plate 6 and the screen plate 3 in an S-shape, effectively improving the fixing effect of the outer edge of the screen 4 between the pressure plate 6 and the screen plate 3.

[0040] See Figure 4 The lower inner side of the pressure plate 6 is provided with a receiving groove 62. The outer edge of the screen 4 extends to the top of the pressure plate 6 and then bends downward for the second time. The outer edge of the screen 4 wraps around the outer wall of the pressure plate 6. Then the outer edge of the screen 4 is bent for the third time, so that the end of the outer edge of the screen 4 can be turned into the receiving groove 62. The outer edge of the screen 4 is elastic. When the end of the outer edge of the screen 4 enters the receiving groove 62, it can automatically and tightly fit with the inner wall of the receiving groove 62. In this way, the screen 4 is reliably fixed.

[0041] See Figure 1 and Figure 2 A limiting ring 23 is provided at the top opening of the base 2. The limiting ring 23 is located on the inner wall of the base 2. After the screen 4 is installed and fixed, the screen plate 3 and the screen 4 can be placed into the base 2. When the pressure plate 6 contacts the limiting ring 23, the screen plate 3 is placed in place. At this time, the outer wall of the screen plate 3 and the inner wall of the base 2 are separated from each other. Then, the screen plate 3 can be locked by several latches 24. The locking force of the latches 24 on the screen plate 3 will cause the screen plate 3 to tend to move downward, while the pressure plate 6 will remain relatively stationary. In this way, the first pressure ring 32 and the second pressure ring 61 will move to a certain extent, thereby improving the fixing effect of the first pressure ring 32 and the second pressure ring 61 on the screen 4.

[0042] See Figure 1 An ultrasonic transducer 5 is installed on the top outer wall of the base 2. The ultrasonic transducer 5 transmits ultrasonic vibration energy to the base 2 and the sieve plate 3. When the ultrasonic transducer 5 works in conjunction with the vibration motor 21, it can significantly improve the vibration effect on the sieve plate 3. Thus, after the powder is placed in the sieve plate 3, the vibration motor 21 is turned on, which can realize the vibration of the base 2 and the sieve plate 3, allowing the powder to pass through the screen 4 and enter the discharge pipe 22, thereby achieving sieving of the powder and improving the fineness of the powder. When there are many oil lumps in the powder and the sieving speed is slow, the ultrasonic transducer 5 can be turned on to increase the vibration frequency of the base 2 and the sieve plate 3, thereby promoting the sieving operation of the powder and greatly enhancing the sieving efficiency, which is conducive to industrial promotion and use.

[0043] See Figure 1 A support 80, L-shaped, is mounted on the movable platform 8. The vertical end of the support 80 is connected to the movable platform 8 and extends vertically upwards. The horizontal end of the support 80 is located above the sieve disc 3. A motor 72 is mounted on the horizontal end of the support 80. A brush plate 7 is located inside the sieve disc 3. The brush plate 7 is connected to the motor 72 via a connecting rod 71. Specifically, the brush plate 7 and the connecting rod 71 are connected by threads. The outer diameter of the brush plate 7 is smaller than the inner diameter of the sieve disc 3. The connecting rod 71 is connected to the output shaft of the motor 72, allowing the motor 72 to drive the connecting rod 71 and the brush plate 7 to rotate. Brush bristles are located at the bottom of the brush plate 7, contacting the sieve screen 4. When the brush plate 7 starts to rotate, the bristles brush the sieve screen 4 and agitate the powder inside the sieve disc 3, thereby improving the sieving efficiency of the powder.

[0044] The horizontal end of the support 80 is telescopic. When the brush plate 7 needs to brush the screen 4, the horizontal end of the support 80 drives the brush plate 7 to move, causing the end of the brush plate 7 to be separated from the inner wall of the screen disk 3. After the brush plate 7 has been brushing for a period of time, a lot of powder will adhere to the bristles at the bottom of the brush plate 7. This powder will affect the brushing effect of the bristles on the screen 4. At this time, the horizontal end of the support 80 will retract, so that any end of the brush plate 7 is in contact with the inner wall of the screen disk 3. In this way, the vibration energy of the screen disk 3 will be transmitted to the brush plate 7, causing the brush plate 7 to vibrate, thereby shaking off the powder on the bristles, achieving the cleaning effect of the bristles, ensuring that the bristles can reliably contact the screen 4 and achieve the brushing effect of the screen 4, and promoting the sieving of powder.

[0045] Figure 5 This is a schematic 3D diagram of the base. See also... Figure 5 and combined Figure 2 Inside the base 2, there is also a movable plate 27 and several movable rods 25. Both the movable plate 27 and the movable rods 25 are located below the screen 4. The movable plate 27 is located at the top center of the base 2 and is coaxially arranged with the screen plate 3. A hydraulic rod 26 is installed inside the base 2. The rod body of the hydraulic rod 26 is located inside the base 2 and outside the discharge pipe 22. The push rod of the hydraulic rod 26 passes through the discharge pipe 22 and connects to the bottom of the movable plate 27. Thus, while the hydraulic rod 26 does not affect the movement of the powder within the discharge pipe 22, it enables the movable plate 27 to reciprocate vertically. One end of the movable rod 25 is connected to the bottom of the limiting ring 23, and the other end of the movable rod 25 is placed on the top of the movable plate 27. The movable plate 27 provides support for the movable rod 25, but there is no direct connection between the movable plate 27 and the movable rod 25. When the hydraulic rod 26 drives the movable plate 27 downward, the movable rod 25 rotates downward around its hinge point with the limiting ring 23, meaning the movable rod 25 gradually tilts. When the hydraulic rod 26 drives the movable plate 27 up and down, the movable rod 25 rotates upward around its hinge point with the limiting ring 23. Through the reasonable selection of the size and installation position of the hydraulic rod 26, the contact area between the movable rod 25 and the movable plate 27 is maximized and the movable rod 25 is horizontal when the push rod of the hydraulic rod 26 is fully extended. When the push rod of the hydraulic rod 26 is fully retracted, the contact area between the movable rod 25 and the movable plate 27 is minimized and the movable rod 25 tilts. In other words, the end of the movable rod 25 furthest from the limiting ring 23 will always rest on the top of the movable plate 27, thus adjusting the posture of the movable rod 25 by moving the movable plate 27.

[0046] When the brush plate 7 needs to brush the screen 4, the movable plate 27 moves upward, making the movable rod 25 horizontal. This allows the top of the movable rod 25 to fit against the bottom of the screen 4, providing support and preventing damage to the screen 4 during brushing. When the brush plate 7 is in contact with the screen disc 3 and the brush bristles are not brushing the screen 4, the movable plate 27 moves downward, causing the movable rod 25 to tilt downward. This reduces the impact of the movable rod 25's support on the screen 4 on the sieving efficiency. Furthermore, an opening can be provided at the top of the movable plate 27, making it annular. This prevents powder from accumulating at the top of the movable plate 27, ensuring that the powder falls completely into the discharge pipe 22.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A duck egg powder sieving machine characterized by, The application relates to a vibrating screen, which comprises a supporting base (1), a base (2) and a screen disc (3), the base (2) is sleeved on the top of the supporting base (1), the bottom of the base (2) is connected with the top of the supporting base (1) through a plurality of springs (10), the bottom of the base (2) is provided with a vibrating motor (21), the base (2) is funnel-shaped, the screen disc (3) is detachably arranged at the top opening of the base (2), the outer side of the base (2) is provided with a discharging pipe (22), and the inlet of the discharging pipe (22) is located below the screen disc (3). The bottom of the screen disc (3) is wrapped with a screen mesh (4), and the part, which is attached to the outer wall of the screen disc (3), is clamped between the screen disc (3) and the base (2). An ultrasonic vibration head (5) is arranged on the top outer wall of the base (2), and the ultrasonic vibration head (5) is used for transmitting ultrasonic vibration energy to the base (2) and the screen disc (3). A limiting ring (23) is arranged on the inner wall of the base (2). A brush plate (7) is arranged in the screen disc (3), the brush hairs at the bottom of the brush plate (7) are attached to the screen mesh (4), the top of the brush plate (7) is provided with a connecting rod (71), an electric motor (72) is arranged above the screen disc (3), the output shaft of the electric motor (72) is connected with the connecting rod (71), and the electric motor (72) is used for driving the brush plate (7) to rotate. The supporting base (1) is arranged on a movable platform (8), an L-shaped support (80) is further arranged on the movable platform (8), the vertical end of the support (80) is connected with the movable platform (8), the horizontal end of the support (80) is located above the screen disc (3), the electric motor (72) is arranged on the horizontal end of the support (80), the horizontal end of the support (80) can be telescopically extended horizontally, the brush plate (7) moves synchronously with the horizontal end of the support (80) and intermittently attaches to the inner wall of the screen disc (3). A plurality of movable rods (25) are hingedly connected to the bottom of the limiting ring (23), a hydraulic rod (26) is arranged in the base (2) and extends in the vertical direction, the top of the hydraulic rod (26) is provided with a movable plate (27), one end of the movable rod (25) is connected with the limiting ring (23), the other end of the movable rod (25) is arranged on the top of the movable plate (27), the hydraulic rod (26) drives the movable plate (27) to reciprocate in the vertical direction, the movable rod (25) rotates around the hinge point and attaches to or moves away from the screen mesh (4). When the push rod of the hydraulic rod (26) is fully extended, the contact area between the movable rod (25) and the movable plate (27) is maximum and the movable rod (25) is in a horizontal state, and when the push rod of the hydraulic rod (26) is fully retracted, the contact area between the movable rod (25) and the movable plate (27) is minimum and the movable rod (25) is in an inclined state.

2. The duck egg powder sieving machine according to claim 1, characterized in that, The lower outer wall of the sieve tray (3) is provided with a groove (31), the groove bottom of the groove (31) is provided with two first compression rings (32), the two first compression rings (32) are arranged in an upper and lower interval, the outer side of the sieve tray (3) is provided with a pressing plate (6), the pressing plate (6) is connected head to tail to form a ring, the inner wall of the pressing plate (6) is provided with two second compression rings (61), the two second compression rings (61) are arranged in an upper and lower interval, the two first compression rings (32) and the two second compression rings (61) are arranged alternately, the middle part of the sieve net (4) covers the bottom of the sieve tray (3), the outer edge of the sieve net (4) is arranged between the pressing plate (6) and the sieve tray (3), and the first compression ring (32) and the second compression ring (61) are used for pressing the outer edge of the sieve net (4).

3. The duck egg powder sieving machine according to claim 2, characterized in that, One side of the second compression ring (61) is connected with the inner wall of the pressing plate (6), the other side of the second compression ring (61) extends into the groove (31), and the second compression ring (61) and the first compression ring (32) interfere in the vertical direction.

4. The duck egg powder sieving machine according to claim 2, characterized in that, The inner side of the pressing plate (6) is provided with a containing groove (62), the outer edge of the sieve net (4) is elastic, the outer edge of the sieve net (4) is bent downward after being arranged above the pressing plate (6), and the outer edge of the sieve net (4) wraps the outer wall of the pressing plate (6) and is folded into the containing groove (62).

5. The duck egg powder sieving machine according to claim 4, characterized in that, The bottom of the pressing plate (6) is attached to the top of the limiting ring (23), the outer wall of the sieve tray (3) is separated from the inner wall of the base (2), and the outer wall of the base (2) is provided with a plurality of lock buckles (24), the lock buckles (24) are used for pressing and locking the sieve tray (3).

6. The duck egg powder sieving machine according to claim 1, characterized in that, The connecting rod (71) and the brush plate (7) are connected through threads, and the outer diameter of the brush plate (7) is smaller than the inner diameter of the sieve tray (3).

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