Impurity screening device for dehydrated vegetables

Abstract

The utility model relates to the technical field of dehydrated vegetable processing, in particular to an impurity screening device for dehydrated vegetables, which comprises a screening box, a swinging screen arranged at the upper end in the screening box, a driving crankshaft component arranged at the rear end of the screening box, a driving connecting rod arranged at the rear end of the swinging screen, and a driving connecting rod in transmission connection with the driving crankshaft component. A movable groove corresponding to the driving connecting rod is formed in the screening box, an impurity box is inserted into the lower end of the interior of the screening box, a discharging plate is further arranged on the inner side of the front end of the screening box, the discharging plate is arranged on the front side of the lower end of the swinging screen, and a material collecting box is further arranged on the lower side of the front end of the discharging plate. According to the device, dehydrated vegetables can be thrown forwards in the vibration screening process, finally, the dehydrated vegetables are discharged through a discharging plate and fall into a material collecting box to be collected, heavy impurities can fall into an impurity box through a screen plate, feeding and screening operation can be continuously conducted through the structure, and the continuous processing effect is achieved.

Description

A device for screening impurities in dehydrated vegetables Technical Field

[0001] This utility model relates to the field of dehydrated vegetable processing technology, specifically to an impurity screening device for dehydrated vegetables. Background Technology

[0002] Dehydrated vegetables, also known as rehydrated vegetables, are dried vegetables made by washing and drying fresh vegetables to remove most of their water content. The original color and nutritional components of the vegetables remain largely unchanged. They are easy to store and transport, and can effectively regulate the seasonal fluctuations in vegetable production. To eat, simply soak them in water to rehydrate them, preserving their original color, nutrients, and flavor.

[0003] During the processing of dehydrated vegetables, some impurities and dust are still present. Therefore, the processing steps also need to include impurity screening for dehydrated vegetables. Generally, impurity screening usually uses vibrating screening devices. During use, vibrating screening devices can only screen out heavier impurities, and the dust generated during screening cannot be effectively treated. Dehydrated vegetables cannot be sprayed for dust reduction. Therefore, this utility model proposes an impurity screening device for dehydrated vegetables to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide an impurity screening device for dehydrated vegetables to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an impurity screening device for dehydrated vegetables, comprising...

[0006] A screening box is provided, with a gyratory screen installed at the upper end inside the screening box. A drive crankshaft assembly is installed at the rear end of the screening box, and a drive connecting rod is installed at the rear end of the gyratory screen. The drive connecting rod is connected to the drive crankshaft assembly. A movable groove corresponding to the drive connecting rod is opened on the screening box. An impurity box is inserted at the lower end inside the screening box, corresponding to the gyratory screen. A feed plate is also provided on the inner side of the front end of the screening box, located at the lower front end of the gyratory screen. A collection box is also provided on the lower side of the front end of the feed plate.

[0007] Preferably, the screening box has openings at the top and front, and a movable groove for the drive linkage is provided in the middle of the upper side of the rear end of the screening box. Fixed frames are fixedly connected to the side walls of the screening box on both sides of the movable groove. A drive crankshaft assembly is arranged between the fixed frames. The drive crankshaft assembly includes a central eccentric turntable. The eccentric turntable includes two sets arranged symmetrically on the left and right. An eccentric rotating shaft is connected in the middle of the two sets of eccentric turntables. A rotating shaft is fixedly connected to the middle of the outer side of the eccentric turntable. The rotating shaft is rotatably connected to the fixed frames on both sides through bearings. The rotating shaft on one side passes through the fixed frame and is fixedly connected to a synchronous turntable at its end. A synchronous belt is driven externally to the synchronous turntable. The other end of the synchronous belt is driven to a drive disk. The drive disk is fixedly connected to the transmission output end of the drive motor. The drive motor is a stepper motor.

[0008] Preferably, the oscillating screen includes a main fixing frame, the fixing frame is U-shaped, a screen plate is connected to the lower end of the fixing frame, the screen plate has uniformly distributed screen holes, and a connecting plate is integrally formed on the edge of the screen plate. The connecting plate is sleeved on the outer side of the lower end of the fixing frame and fixedly connected by bolts.

[0009] Preferably, two sets of rotating shafts are symmetrically arranged on both sides of the fixed frame. A drive connecting rod is fixedly connected to the middle of the rear end of the fixed frame. The rotating shaft and the drive connecting rod pass through a connecting plate, and a corresponding slot is opened on the connecting plate. A rocker arm is rotatably connected to the outside of the rotating shaft. The other end of the rocker arm is rotatably connected to the outside of the fixed shaft. The fixed shaft is fixedly connected to the inner wall of the screening box. The drive connecting rod passes through a movable slot and is connected to the outside. Its end is rotatably connected to the outside of the eccentric rotating shaft in the middle of the drive crankshaft assembly. A baffle plate is fixedly connected to the middle of the upper end of the fixed frame.

[0010] Preferably, a dust suction hood is provided at the upper end of the screening box. The dust suction hood can move back and forth at the upper end of the screening box, forming a cover plate at the upper end of the screening box. After moving, it can form a feed inlet, which corresponds to the upper end of the gyratory screen. The dust suction hood includes a main body shell, and a connecting pipe is welded to the upper end of the shell. A dust suction pipe is connected inside the connecting pipe. The dust suction pipe is a corrugated pipe and is connected to a suction device. A screen is provided inside the dust suction hood to prevent dehydrated vegetables from being sucked away.

[0011] Preferably, a feeding plate is provided between the side walls of the front opening of the screening box. Connecting rods are provided on both sides of one end of the feeding plate, and the connecting rods are rotatably connected to the inner wall of the screening box. The other end of the feeding plate is inclined and lower than the connecting end. Baffles are fixedly connected to the upper ends of both sides of the feeding plate. The end of the feeding plate is bent downward and inserted into the opening at the upper end of the collection box. Damping support rods are provided at the lower ends of both sides of the feeding plate. Hinges are provided at both ends of the damping support rods. One end of the hinge is fixedly connected to the lower end of the feeding plate, and the other end of the hinge is fixedly connected to the inner wall of the end of the screening box to form a triangular support structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features a gyratory screen structure that uses gyratory vibration to screen impurities from dehydrated vegetables. Due to the gyratory screen's operating principle, the dehydrated vegetables are thrown forward during the screening process and finally discharged into a collection box via a feeding plate. Heavier impurities fall through the screen plate into the impurity box. This structure allows for continuous feeding and screening, achieving continuous processing. A dust collection hood is also installed at the top of the screening box to absorb dust generated during screening, further improving the screening and dust removal efficiency. Attached Figure Description

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

[0015] Figure 2 is a schematic diagram of the left side structure of this utility model;

[0016] Figure 3 is a schematic diagram of the internal structure of this utility model;

[0017] Figure 4 is a schematic diagram of the structure of the gyratory screen in this utility model.

[0018] In the diagram: 1 Screening box, 2 Gyratory screen, 3 Impurity box, 4 Feed plate, 5 Collection box, 6 Dust hood, 7 Dust suction pipe, 8 Fixing frame, 9 Drive crankshaft assembly, 10 Fixing frame, 11 Screen plate, 12 Connecting plate, 13 Rotating shaft, 14 Rocker arm, 15 Baffle plate, 16 Drive connecting rod, 17 Rotating shaft, 18 Eccentric turntable, 19 Synchronous turntable. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Please refer to Figures 1 to 4. This utility model provides a technical solution: an impurity screening device for dehydrated vegetables, comprising...

[0021] Screening box 1, with a gyratory screen 2 installed at the upper end inside the screening box 1, a drive crankshaft assembly 9 installed at the rear end of the screening box 1, a drive connecting rod 16 installed at the rear end of the gyratory screen 2, the drive connecting rod 16 being connected to the drive crankshaft assembly 9, a movable groove corresponding to the drive connecting rod 16 being opened on the screening box 1, an impurity box 3 being inserted at the lower end inside the screening box 1, the impurity box 3 being corresponding to the gyratory screen 2, a discharge plate 4 being installed on the inner side of the front end of the screening box 1, the discharge plate 4 being installed on the front side of the lower end of the gyratory screen 2, and a collection box 5 being installed on the lower side of the front end of the discharge plate 4;

[0022] The screening box 1 has openings at the top and front end. A movable groove for the drive connecting rod 16 is provided in the middle of the upper rear side of the screening box 1. Fixed frames 8 are fixedly connected to the side walls of the screening box 1 on both sides of the movable groove. A drive crankshaft assembly 9 is arranged between the fixed frames 8. The drive crankshaft assembly 9 includes a central eccentric turntable 18, which comprises two sets symmetrically arranged on the left and right. An eccentric rotating shaft is connected between the two sets of eccentric turntables 18. A rotating shaft 17 is fixedly connected to the outer middle of the eccentric turntable 18. The rotating shaft 17 is rotatably connected to the fixed frames 8 on both sides via bearings. One rotating shaft 17 passes through the fixed frame 8 and is fixedly connected to a synchronous turntable 19 at its end. A synchronous belt is connected to the synchronous turntable 19, and the other end of the synchronous belt is connected to a drive disc. The drive disc is fixedly connected to the output end of a drive motor, which is a stepper motor. The gyratory screen 2 includes a main body fixed frame 10. The fixed frame 10 is U-shaped. A screen plate 11 is connected to the lower end of the fixed frame 10. The screen plate 11 has evenly distributed screen holes. A connecting plate 12 is integrally formed on the edge of the screen plate 11. The connecting plate 12 is sleeved on the outer side of the lower end of the fixed frame 10 and fixedly connected by bolts. Two sets of rotating shafts 13 are symmetrically arranged on both sides of the fixed frame 10. A drive connecting rod 16 is fixedly connected to the middle of the rear end of the fixed frame 10. The rotating shaft 13 and the drive connecting rod 16 pass through the connecting plate 12. The connecting plate 12 has a corresponding slot. A rocker arm 14 is rotatably connected to the outer side of the rotating shaft 13. The other end of the rocker arm 14 is rotatably connected to the outer side of the fixed shaft. The fixed shaft is fixedly connected to the inner wall of the screening box 1. The drive connecting rod 16 passes through the movable slot and is connected to the outer side. The end is rotatably connected to the outer side of the eccentric rotating shaft in the middle of the drive crankshaft assembly 9. A baffle plate 15 is fixedly connected to the middle of the upper end of the fixed frame 10.

[0023] The drive crankshaft assembly 9 is connected to the fixed frame 8 to ensure connection stability. The drive crankshaft assembly 9 is connected to the swing screen 2 for transmission. The drive crankshaft assembly 9 can be driven to rotate by the drive motor, thereby driving the swing screen 2 to swing and vibrate for screening. The rotation trajectory of the eccentric rotating shaft and the rotation trajectory of the rotating shaft 13 are circular trajectories with the same diameter. The eccentric rotation pushes the drive connecting rod 16 to drive the swing screen 2 to swing, thereby swinging and screening the dehydrated vegetables on the swing screen 2. With the swing, the dehydrated vegetables on the swing screen 2 can be thrown forward, thereby separating dehydrated vegetables of different qualities from impurities. Impurities will fall from the screen holes on the screen plate 11, while the dehydrated vegetables will be thrown forward and slowly sent to the discharge plate 4 to be discharged and collected in the collection box 5.

[0024] A dust suction hood 6 is provided at the upper end of the screening box 1. The dust suction hood 6 can move back and forth at the upper end of the screening box 1. The dust suction hood forms a cover plate at the upper end of the screening box 1. After moving, it can form a feed inlet. The feed inlet corresponds to the upper end of the gyratory screen 2. The dust suction hood 6 includes a main body shell. A connecting pipe is welded to the upper end of the shell. A dust suction pipe 7 is connected inside the connecting pipe. The dust suction pipe 7 is a corrugated pipe. The dust suction pipe 7 is connected to a suction device. A screen is provided inside the dust suction hood to prevent dehydrated vegetables from being sucked away.

[0025] The dust hood 6 can collect the dust raised during the screening process, thereby improving the screening effect of impurities and environmental protection performance. It can also be used as a cover to prevent materials from falling during the throwing process. The filter screen set inside the cover can ensure that dust can be sucked away while preventing dehydrated vegetables from being sucked away. The corrugated suction pipe 7 can easily adjust the position of the dust hood 6 to ensure the dust suction effect and improve practicality.

[0026] A feeding plate 4 is provided between the side walls of the front opening of the screening box 1. A connecting rod is provided on both sides of one end of the feeding plate 4. The connecting rod is rotatably connected to the inner wall of the screening box 1. The other end of the feeding plate 4 is lower than the connecting end and is set in an inclined position. Baffles are fixedly connected to the upper ends of both sides of the feeding plate 4. The end of the feeding plate 4 is bent downward and inserted into the opening at the upper end of the collection box 5. Damping support rods are provided at the lower ends of both sides of the feeding plate 4. Hinges are provided at both ends of the damping support rods. One end of the hinge is fixedly connected to the lower end of the feeding plate 4, and the other end of the hinge is fixedly connected to the inner wall at the end of the screening box 1 to form a triangular support structure.

[0027] The material thrown by the gyratory screen 2 can be caught and discharged by the feeding plate 4. The baffle can prevent the material from falling during the discharge process, and the damping strut set at the lower end of the feeding plate 4 can provide support and shock absorption, improve the material receiving performance and pressure bearing performance, and ensure stability. At the same time, the feeding plate 4 can restrict the impurity box 3, ensuring the stability of the impurity box 3 after it is inserted into the screening box 1. When it is necessary to remove the impurity box 3, the feeding plate 4 can be lifted upward to release the restriction, and the impurity box 3 can be pulled out from the front opening of the screening box 1.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for screening impurities in dehydrated vegetables, characterized in that: The screen includes a screening box (1), a gyratory screen (2) is provided at the upper end of the screening box (1), a drive crankshaft assembly (9) is provided at the rear end of the screening box (1), a drive connecting rod (16) is provided at the rear end of the gyratory screen (2), the drive connecting rod (16) is connected to the drive crankshaft assembly (9) in a transmission, a movable groove corresponding to the drive connecting rod (16) is provided on the screening box (1), an impurity box (3) is inserted at the lower end of the screening box (1), the impurity box (3) corresponds to the gyratory screen (2), a feed plate (4) is also provided on the inner side of the front end of the screening box (1), the feed plate (4) is provided on the front side of the lower end of the gyratory screen (2), and a collection box (5) is also provided on the lower side of the front end of the feed plate (4).

2. The impurity screening device for dehydrated vegetables according to claim 1, characterized in that: The screening box (1) has openings at the top and front end. A movable groove for the drive connecting rod (16) is provided in the middle of the upper side of the rear end of the screening box (1). Fixing frames (8) are fixedly connected to the side walls of the screening box (1) on both sides of the movable groove. A drive crankshaft assembly (9) is arranged between the fixing frames (8). The drive crankshaft assembly (9) includes an eccentric turntable (18) in the middle. The eccentric turntable (18) includes two sets arranged symmetrically on the left and right. The middle of the two sets of eccentric turntables (18) is connected. An eccentric rotating shaft is connected to the outer middle of the eccentric turntable (18). The rotating shaft (17) is rotatably connected to the fixed frame (8) on both sides through the bearing. The rotating shaft (17) on one side passes through the fixed frame (8) and is fixedly connected to the end of the synchronous turntable (19). The synchronous turntable (19) is externally connected to the synchronous belt. The other end of the synchronous belt is connected to the drive disk. The drive disk is fixedly connected to the transmission output end of the drive motor. The drive motor is a stepper motor.

3. The impurity screening device for dehydrated vegetables according to claim 1, characterized in that: The swing screen (2) includes a main fixing frame (10), which is U-shaped. A screen plate (11) is connected to the lower end of the fixing frame (10). The screen plate (11) has evenly distributed screen holes. A connecting plate (12) is integrally formed on the edge of the screen plate (11). The connecting plate (12) is sleeved on the outer side of the lower end of the fixing frame (10) and fixedly connected by bolts.

4. The impurity screening device for dehydrated vegetables according to claim 3, characterized in that: Two sets of rotating shafts (13) are symmetrically arranged on both sides of the fixed frame (10). A drive connecting rod (16) is fixedly connected to the middle of the rear end of the fixed frame (10). The rotating shaft (13) and the drive connecting rod (16) pass through the connecting plate (12). A corresponding slot is opened on the connecting plate (12). A rocker arm (14) is rotatably connected to the outside of the rotating shaft (13). The other end of the rocker arm (14) is rotatably connected to the outside of the fixed shaft. The fixed shaft is fixedly connected to the inner wall of the screening box (1). The drive connecting rod (16) passes through the movable slot and is connected to the outside. The end is rotatably connected to the outside of the eccentric rotating shaft in the middle of the drive crankshaft assembly (9). A baffle plate (15) is fixedly connected to the middle of the upper end of the fixed frame (10).

5. The impurity screening device for dehydrated vegetables according to claim 1, characterized in that: The upper end of the screening box (1) is provided with a dust suction hood (6). The dust suction hood (6) can move back and forth at the upper end of the screening box (1). The dust suction hood forms a cover plate at the upper end of the screening box (1). After moving, it can form a feed inlet. The feed inlet corresponds to the upper end of the swing screen (2). The dust suction hood (6) includes a main body shell. A connecting pipe is welded to the upper end of the shell. A dust suction pipe (7) is connected inside the connecting pipe. The dust suction pipe (7) is a corrugated pipe. The dust suction pipe (7) is connected to a suction device. A screen is provided inside the dust suction hood to prevent dehydrated vegetables from being sucked away.

6. The impurity screening device for dehydrated vegetables according to claim 1, characterized in that: A feeding plate (4) is provided between the side walls of the front opening of the screening box (1). A connecting rod is provided on both sides of one end of the feeding plate (4). The connecting rod is rotatably connected to the inner wall of the screening box (1). The other end of the feeding plate (4) is lower than the connecting end and is set in an inclined position. A baffle is fixedly connected to the upper end of both sides of the feeding plate (4). The end of the feeding plate (4) is bent downward and the bent end is inserted into the opening at the upper end of the collection box (5). A damping support rod is provided at the lower end of both sides of the feeding plate (4). A hinge seat is provided at both ends of the damping support rod. One end of the hinge seat is fixedly connected to the lower end of the feeding plate (4), and the other end of the hinge seat is fixedly connected to the inner wall at the end of the screening box (1) to form a triangular support structure.

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