A non-contact pneumatic cleaning machine with a flow guide structure for leaf vegetables

Abstract

The application relates to the technical field of cleaning machines, in particular to a leafy vegetable non-contact pneumatic cleaning machine with a flow guide structure, which comprises a shell with a wind cleaning chamber arranged inside, and a feeding port communicated with the wind cleaning chamber is arranged on the top outer wall of the shell. The detection assembly is arranged, a laser range finder vertically irradiates the guide plate, the distance between the top side outer wall of the guide plate and the wind cleaning chamber is detected, the feeding amount is judged, when the feeding amount increases, the fan is deflected to one side of the discharge port, the leafy vegetables are further gathered to one side of the discharge port, the included angle between the fan main shaft and the guide plate is reduced, the projection area of the circumscribed circle of the fan on the guide plate is maximized, the air outlet area of the screen hole on the guide plate is increased, the wind cleaning effect is improved, compared with the wind cleaning mode of the prior art static regulation of air volume, the feeding amount can be monitored in real time, and the air volume is regulated according to the feeding amount.

Description

Technical Field

[0001] This invention relates to the field of cleaning machine technology, and in particular to a non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure. Background Technology

[0002] In the large-scale processing industry of pre-prepared vegetables and dehydrated leafy vegetables, the processing of stem and leaf vegetables such as celery, coriander, and bok choy all require precise separation of leaves and stems. The two differ greatly in moisture content, taste, processing technology, and market value. Mixing them will seriously reduce the quality and added value of the finished product. At present, the sorting equipment mainly adopts the air separation method to separate the leaves and stems, replacing the traditional manual work to complete the automated stem and leaf separation and impurity removal. This improves the sorting accuracy and production efficiency, reduces processing losses and labor costs, and meets the standardized and large-scale production requirements of modern leafy vegetable processing.

[0003] Publication No. CN118491862A discloses a vegetable air separation device, which relates to the field of vegetable air separation technology. It includes a support frame, a machine frame on top of the support frame, a connecting block fixedly connected to the upper surface of the machine frame, a feed inlet fixedly connected to the upper surface of the connecting block, an air separation box on the right side of the support frame, a conveyor belt inside the air separation box, a fixed frame fixedly connected to the right surface of the air separation box, and a fan fixedly installed on the upper surface of the fixed frame. When vegetables need to be air separated, a vibration motor is started to drive the machine frame to vibrate. During the vibration of the machine frame, the screen will vibrate. At this time, the vegetables to be air separated are put into the feed inlet. The vegetables fall onto the screen and jump through the vibration motor. Some impurities contained in the vegetables will be screened through the screen and fall into the collection box below for collection. The overall inclined design of the machine frame causes the vegetables to move to the right during the vibration and screening.

[0004] The aforementioned prior art uses a rotating screw to move a baffle mounted on it. As the baffle moves downward, it blocks the protective net, thereby adjusting the air outlet area. However, this air volume adjustment method can only be statically controlled and cannot be adjusted in real time according to the amount of material fed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and propose a non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a non-contact pneumatic cleaner for leafy vegetables with a flow guiding structure, comprising a shell with an internal air-separating chamber, an inlet connecting the air-separating chamber to the top outer wall of the shell, a partition dividing the air-separating chamber into two parts on the inner wall of the shell, and a discharge port and a waste discharge port respectively provided on the outer walls of the air-separating chamber on both sides of the partition, further comprising:

[0007] A material guiding assembly is floatingly disposed below the feed inlet. The material guiding assembly includes a material guiding plate with screen holes on its outer wall. The material guiding plate is inclined toward the side where the discharge outlet is located to prolong the material falling time.

[0008] The vibration assembly is installed on the bottom outer wall of the guide plate to drive the guide plate to vibrate and change the vibration direction of the guide plate.

[0009] The air separation component is rotatably connected inside the housing and located below the guide plate. The air separation component includes a second electric push rod and a fan. The air direction of the fan is changed by controlling the extension stroke of the second electric push rod.

[0010] The detection component includes a laser rangefinder fixed to the inner wall of the top of the air classifier chamber, which determines the amount of material fed by detecting the distance between the guide plate and the inner wall of the top of the air classifier chamber;

[0011] The control unit is located on the outer wall of the housing. The control unit is electrically connected to the laser rangefinder and the second electric push rod, and controls the extension and retraction of the second electric push rod according to the signal from the laser rangefinder.

[0012] Preferably, the vibration assembly includes a vibration motor, a support is provided on the bottom outer wall of the guide plate, a first motor base is rotatably connected to the outer wall of the support, and the vibration motor is fixedly installed on the outer wall of the first motor base.

[0013] Preferably, the air separator further includes a drive motor, a bracket is provided on the inner wall of the housing, a second motor base is rotatably connected to the outer wall of the bracket, the drive motor is fixedly installed on the outer wall of the second motor base, the fan is fixedly installed on the output shaft of the drive motor, the second electric push rod is rotatably connected to the outer wall of the bracket, and the output end of the second electric push rod is rotatably connected to the outer wall of the second motor base.

[0014] Preferably, a second spring is fixed on the outer wall of the second motor base, and the end of the second spring away from the second motor base is fixed on the outer wall of the first motor base.

[0015] Preferably, the guide plate is movably disposed on the inner wall of the housing, a first spring is provided between the outer wall of the guide plate and the outer wall of the housing, and a baffle is provided on the outer wall of the guide plate near the discharge port.

[0016] Preferably, the material guiding assembly further includes a first electric push rod rotatably connected to the outer wall of the support, the output end of the first electric push rod being rotatably connected to the outer wall of the first motor base, the baffle being rotatably connected to the outer wall of the material guiding plate, and a connecting rod being rotatably connected to the outer wall of the baffle, the end of the connecting rod away from the baffle being rotatably connected to the outer wall of the first motor base.

[0017] Preferably, the laser rangefinder vertically illuminates the guide plate.

[0018] Preferably, the laser rangefinder is tilted to illuminate the baffle.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention, through its detection components, uses a laser rangefinder that vertically illuminates the guide plate to detect the distance between the top outer wall of the guide plate and the air separation chamber, thus determining the amount of material being fed. When the amount of material being fed increases, the fan deflects towards the side where the discharge port is located, further causing the vegetable leaves to converge towards that side. Simultaneously, the angle between the fan shaft and the guide plate decreases, thereby maximizing the projected area of ​​the fan's tangent circle on the guide plate. This, in turn, increases the air outlet area of ​​the sieve holes on the guide plate, improving the air separation effect. Compared to the existing static air separation method, this invention can monitor the amount of material being fed in real time and adjust the air outlet volume according to the amount of material being fed, enabling a dynamic air volume adjustment air separation process.

[0021] 2. The present invention, through the wind separation component, enables the second motor base to drive the first motor base to rotate synchronously via the second spring during the rotation of the second motor base. The first motor base drives the vibration motor to rotate synchronously, thereby changing the vibration direction of the vibration motor. As the feeding amount increases, the guide plate no longer performs a single lateral vibration. Instead, the material undergoes synchronous composite vibration in both the up-down and lateral directions on the inclined guide plate, further promoting the separation of vegetable leaves from roots and stems.

[0022] 3. The present invention, through the setting of the material guiding component, enables the control unit to control the extension of the first electric push rod and the second electric push rod respectively when the laser rangefinder in the detection component determines that the feeding amount has increased, so that the first motor base and the second motor base deflect synchronously, making the adjustment method more precise and overcoming the defect of instability of elastic elements. Attached Figure Description

[0023] Figure 1 This is a three-dimensional sectional view of the overall structure proposed in this invention. Figure 1 ;

[0024] Figure 2 This is a three-dimensional sectional view of the overall structure proposed in this invention. Figure 2 ;

[0025] Figure 3 This is a three-dimensional schematic diagram of the wind separator component proposed in this invention;

[0026] Figure 4 This is a three-dimensional schematic diagram of the overall structure proposed in this invention;

[0027] Figure 5 This is a schematic diagram of the overall structure proposed in this invention. Figure 1 ;

[0028] Figure 6 This is a three-dimensional sectional view of the overall structure proposed in this invention. Figure 3 ;

[0029] Figure 7 This is a three-dimensional schematic diagram of the material guiding component proposed in this invention;

[0030] Figure 8 This is a three-dimensional schematic diagram of the baffle proposed in this invention;

[0031] Figure 9 This is a schematic diagram of the overall structure proposed in this invention. Figure 2 .

[0032] Legend:

[0033] 1. Shell; 11. Inlet; 12. Air classifier chamber; 13. Baffle; 14. Outlet; 15. Impurity outlet; 16. Support frame;

[0034] 2. Guide plate; 21. Screen hole; 22. First spring; 23. Baffle; 24. Support;

[0035] 3. First motor base; 31. Vibration motor;

[0036] 4. Second motor mount; 41. Drive motor; 42. Fan; 43. Second electric push rod; 44. Second spring;

[0037] 5. First electric actuator; 51. Connecting rod;

[0038] 6. Control unit;

[0039] 7. Laser rangefinder. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] First embodiment:

[0042] See Figures 1 to 5As shown, a non-contact pneumatic cleaner for leafy vegetables with a flow guiding structure includes a shell 1 with an internal air-separating chamber 12. An inlet 11 connecting the air-separating chamber 12 is provided on the top outer wall of the shell 1. A partition 13 dividing the air-separating chamber 12 into two parts is provided on the inner wall of the shell 1. A discharge port 14 and a waste discharge port 15 are respectively provided on the outer walls of the air-separating chamber 12 on both sides of the partition 13. The machine also includes:

[0043] The material guiding assembly is floatingly disposed below the feed inlet 11. The material guiding assembly includes a material guiding plate 2 with screen holes 21 on its outer wall. The material guiding plate 2 is inclined toward the side where the discharge port 14 is located to prolong the material falling time. The material guiding plate 2 is movably disposed on the inner wall of the housing 1. A first spring 22 is disposed between the outer wall of the material guiding plate 2 and the outer wall of the housing 1. A baffle 23 is disposed on the outer wall of the end of the material guiding plate 2 near the discharge port 14.

[0044] A vibration assembly is installed on the bottom outer wall of the guide plate 2 to drive the guide plate 2 to vibrate and change the vibration direction of the guide plate 2. The vibration assembly includes a vibration motor 31. A support 24 is provided on the bottom outer wall of the guide plate 2. A first motor base 3 is rotatably connected to the outer wall of the support 24. The vibration motor 31 is fixedly installed on the outer wall of the first motor base 3.

[0045] The air separation component is rotatably connected inside the housing 1 and located below the guide plate 2. The air separation component includes a second electric push rod 43 and a fan 42. By controlling the extension stroke of the second electric push rod 43, the air direction of the fan 42 is changed. The air separation component also includes a drive motor 41. A bracket 16 is provided on the inner wall of the housing 1. A second motor seat 4 is rotatably connected to the outer wall of the bracket 16. The drive motor 41 is fixedly installed on the outer wall of the second motor seat 4. The fan 42 is fixedly installed on the output shaft of the drive motor 41. The second electric push rod 43 is rotatably connected to the outer wall of the bracket 16. The output end of the second electric push rod 43 is rotatably connected to the outer wall of the second motor seat 4. A second spring 44 is fixed on the outer wall of the second motor seat 4. The end of the second spring 44 away from the second motor seat 4 is fixed on the outer wall of the first motor seat 3.

[0046] The detection component includes a laser rangefinder 7 fixed on the inner wall of the top of the air classifier 12. The laser rangefinder 7 determines the amount of material fed by detecting the distance between the guide plate 2 and the inner wall of the top of the air classifier 12. The laser rangefinder 7 irradiates the guide plate 2 vertically.

[0047] The control unit 6 is located on the outer wall of the housing 1. The control unit 6 is electrically connected to the laser rangefinder 7 and the second electric push rod 43, and controls the extension and retraction of the second electric push rod 43 according to the signal from the laser rangefinder 7.

[0048] It should be noted that during operation, the material is fed into the air separation chamber 12 through the feed inlet 11, and the vibration motor 31 is started. The vibration motor 31 drives the guide plate 2 to vibrate, causing the material to fall. At the same time, the screen holes 21 on the guide plate 2 only allow the roots and stems to pass through. Under vibration conditions, the leaves and roots and stems can be separated, improving the sorting effect.

[0049] At the same time, the drive motor 41 is started to drive the fan 42 to rotate, so that the axis of the fan 42 is perpendicular to the guide plate 2 during operation. The airflow from the fan 42 blows from below the guide plate 2 to the guide plate 2. Whenever the material passes above the fan 42, the airflow passes through the screen hole 21 and picks up the vegetable leaves, blowing the vegetable leaves off the guide plate 2. The vegetable leaves fall along the airflow to the side where the discharge port 14 is located, completing the air separation of vegetable leaves and roots.

[0050] Furthermore, during the aforementioned process, the distance between the top outer wall of the guide plate 2 and the air separation chamber 12 is detected by the laser rangefinder 7, which vertically illuminates the guide plate 2, to determine the amount of material being fed. When the detection value of the laser rangefinder 7 decreases, it indicates that the material accumulation thickness on the guide plate 2 has increased, which in turn indicates that the amount of material being fed has increased. At this time, the control unit 6 controls the extension of the second electric push rod 43, which drives the second motor base 4 to rotate. The second motor base 4 drives the drive motor 41 and the fan 42 to rotate synchronously. The fan 42 deflects towards the side where the discharge port 14 is located, further causing the vegetable leaves to gather towards the side where the discharge port 14 is located, preventing the vegetable leaves blown by the airflow from blocking the laser rangefinder 7. At the same time, it reduces the angle between the main shaft of the fan 42 and the guide plate 2, thereby maximizing the projection area of ​​the circumscribed circle of the fan 42 on the guide plate 2, which in turn increases the air outlet area of ​​the sieve holes 21 on the guide plate 2, improving the air separation effect. Compared with the existing static air separation method that controls the air volume, this invention can monitor the amount of material being fed in real time and adjust the air volume according to the amount of material being fed.

[0051] During the rotation of the second motor base 4, the second motor base 4 drives the first motor base 3 to rotate synchronously through the second spring 44. The first motor base 3 drives the vibration motor 31 to rotate synchronously, thereby changing the vibration direction of the vibration motor 31. As the feeding amount increases, the guide plate 2 no longer performs a single lateral vibration. Instead, the material undergoes synchronous compound vibration in both the up-down and lateral directions on the inclined guide plate 2, further promoting the separation of vegetable leaves from roots and stems. It should be noted that the second spring 44 is always in a stretched state, which allows the second motor base 4 to pull the first motor base 3 to rotate synchronously. Since the second spring 44 is an elastic element, the first motor base 3 itself will still swing slightly during the operation of the vibration motor 31, causing the vibration direction to change, which does not affect the final effect.

[0052] In addition, the laser rangefinder 7 can be electrically connected to the drive motor 41 through the control unit 6 to achieve the effect of real-time adjustment of the fan speed 42 according to the amount of material fed. Considering that the material is unevenly piled on the guide plate 2, resulting in randomness in the detection value, multiple laser rangefinders 7 can be set in actual use, and the maximum detection value can be taken as the basis for judging the amount of material fed, thereby improving the accuracy of the detection component.

[0053] Second embodiment:

[0054] like Figure 6 As shown, the laser rangefinder 7 is tilted to illuminate the baffle 23.

[0055] It should be noted that this embodiment has the same structure as the first embodiment, except that the laser rangefinder 7 is tilted to illuminate the baffle 23 in order to detect the height of the material gathered at the baffle 23, thereby determining the amount of material fed.

[0056] When the detection value of the laser rangefinder 7 decreases, it indicates that the material accumulation at the baffle 23 is the largest. This indicates that the feeding amount is the largest, and also that the air volume of the fan 42 in the air separation component is insufficient, causing the air separation efficiency to not keep up with the feeding rate. At this time, the control process in the first embodiment is repeated to adjust the air direction of the fan 42 and the air volume of the screen hole 21 on the guide plate 2 in real time.

[0057] Third embodiment:

[0058] like Figures 6 to 8 As shown, the material guiding assembly also includes a first electric push rod 5 rotatably connected to the outer wall of the support 24. The output end of the first electric push rod 5 is rotatably connected to the outer wall of the first motor base 3. The baffle 23 is rotatably connected to the outer wall of the material guiding plate 2. A connecting rod 51 is rotatably connected to the outer wall of the baffle 23. The end of the connecting rod 51 away from the baffle 23 is rotatably connected to the outer wall of the first motor base 3.

[0059] It should be noted that this embodiment aims to solve the problem of instability in the linkage of the second spring 44 in the first embodiment. When this embodiment is used in combination with the first embodiment, the second spring 44 should be omitted.

[0060] When the laser rangefinder 7 in the detection component determines that the feeding amount has increased, the control unit 6 controls the first electric push rod 5 and the second electric push rod 43 to extend respectively, so that the first motor base 3 and the second motor base 4 deflect synchronously. Compared with the linkage method of the second spring 44 in the first embodiment, the adjustment method of this embodiment is more precise and overcomes the defect of the instability of the elastic element. In actual use, the combination method of the specific embodiment can be selected according to the internal space of the housing and the manufacturing cost requirements.

[0061] Fourth embodiment:

[0062] like Figure 9 As shown, the discharge port 14 can be connected to an external air pump. During operation, the impurity discharge port 15 is blocked, the feed port 11 serves as the air inlet, and the discharge port 14 serves as the exhaust port. The fan 42 and the air pump work simultaneously, creating a slightly negative pressure environment inside the housing 1. This allows the material blocked at the feed port 11 to be sucked into the air separation chamber 12, preventing the material from clogging the feed port 11 and causing slow feeding. This helps improve overall work efficiency. It should be noted that in this embodiment, an additional filter screen needs to be installed at the discharge port 14 to prevent vegetable leaves from directly entering the air pump.

[0063] Working principle:

[0064] During normal operation, the staff feeds the mixture to be sorted into the air separation chamber 12 through the feed inlet 11. Then, the vibration motor 31 is started. After the vibration motor 31 starts running, it drives the guide plate 2 to vibrate continuously at high frequency. Under the action of vibration driving force, the material on the guide plate 2 slides down evenly and slowly. At the same time, the screen holes 21 evenly opened on the surface of the guide plate 2 have precise screening specifications. The hole size is only able to allow root and stem materials to pass through, while light materials such as leafy vegetables cannot pass through. With the auxiliary disturbance of the vibration condition, the accumulated mixture can be effectively dispersed, breaking the adhesion and stacking of leafy vegetables and root and stem materials, realizing the initial separation of leafy vegetables and root and stem materials, and greatly improving the uniformity of material pretreatment and sorting and the basic sorting effect.

[0065] Simultaneously with the start of the vibrating screening mechanism, the drive motor 41 is also started. The drive motor 41 outputs power to drive the fan 42 to rotate at high speed, forming a stable directional sorting airflow. Due to the equipment assembly structure, the central axis of the fan 42 is perpendicular to the surface of the guide plate 2 in its initial state. The airflow generated by the fan 42 blows upward from below the guide plate 2, penetrating the entire surface of the guide plate 2. Due to the different wind-receiving areas of the roots and leaves, the leaves have a larger area and experience greater wind resistance. When the mixed material slides down the guide plate 2 with the vibration and passes through the airflow area above the fan 42, the high-speed airflow penetrating the screen holes 21 will precisely carry and lift the light leaves, causing them to detach from the surface of the guide plate 2. Subsequently, the leaves continue to drift with the directional airflow and eventually fall smoothly into the area corresponding to the discharge port 14. The slender roots and stems have a smaller wind-receiving area and experience less wind resistance, so the root and stem materials fall normally through the screen holes 21 for discharge, thus completing the fully automatic air-separation operation of leaves and roots and stems.

[0066] During the continuous operation of the entire air separation process, the laser rangefinder 7 is installed vertically facing the surface of the guide plate 2. It can detect the distance between the outer wall of the top side of the guide plate 2 and the inner wall of the air separation chamber 12 in real time. By measuring the changes in the distance data, the real-time feeding amount of the equipment can be accurately determined, realizing dynamic monitoring of the feeding condition. During the operation, when the distance value detected by the laser rangefinder 7 continues to decrease, it means that the thickness of the material accumulated on the surface of the guide plate 2 is constantly increasing, that is, the real-time feeding amount of the equipment increases and the material accumulation load increases. At this time, the built-in control unit 6 of the equipment automatically triggers the control program to control the second electric push rod 43 to extend outward. The extended second electric push rod 43 drives the second motor base 4 to deflect at an angle. The drive motor 41 and fan 42 fixed on the second motor base 4 deflect synchronously with the second motor base 4, so that the fan 42 tilts towards the side where the discharge port 14 is located.

[0067] This angle adjustment has a dual optimization effect: On the one hand, after the fan 42 deflects towards the discharge port 14, it can further guide the vegetable leaves carried by the airflow to quickly converge and discharge towards the discharge port 14, effectively preventing the suspended and flying vegetable leaves from blocking the detection probe of the laser rangefinder 7, and ensuring the accuracy and stability of the equipment's feeding quantity monitoring data; on the other hand, after the fan 42 deflects, the included angle between its main shaft and the surface of the guide plate 2 decreases synchronously, increasing the projected area of ​​the tangent circle of the fan 42 on the surface of the guide plate 2, greatly increasing the effective air outlet area of ​​the screen holes 21 on the surface of the guide plate 2, making the airflow sweep more uniform and comprehensive, completely solving the problem of incomplete local material air separation, and significantly improving the overall air separation accuracy and efficiency. Compared with the shortcomings of traditional air separation equipment that can only statically fix the air volume and cannot adapt to the material working conditions, this equipment can collect feeding quantity data in real time and dynamically adjust the airflow angle and effective air outlet range of the fan 42 according to the material accumulation thickness, realizing adaptive dynamic adjustment of the air separation working conditions.

[0068] Throughout the deflection adjustment process of the second motor base 4, the second motor base 4, through the second spring 44 which is in a continuously stretched state, pulls the first motor base 3 to rotate synchronously. The vibration motor 31 fixed on the first motor base 3 deflects synchronously, thereby changing the vibration output direction of the vibration motor 31. When the amount of material fed into the equipment increases and the material accumulation becomes thicker, the guide plate 2 no longer maintains a single lateral vibration mode, but forms a composite vibration state combining up-and-down shaking and lateral sliding.

[0069] This composite vibration mode can agitate thick layers of material from all directions, effectively breaking up layers of stacked leaves and roots, and further separating adhering mixtures, thus improving material separation from the source and adapting to high-volume operation conditions. It is important to note that the second spring 44 remains taut throughout the entire operation, providing stable traction to the first motor base 3. This ensures that when the second motor base 4 deflects, it precisely drives the first motor base 3 synchronously, enabling the switching of the vibration direction of the vibrating motor 31. Simultaneously, because the second spring 44 is an elastic buffer component, during the high-frequency vibration of the vibrating motor 31, the first motor base 3 can generate a small, autonomous oscillation based on the spring's elasticity. This allows the guide plate 2 to undergo a composite vibration of primarily vertical vibration plus slight lateral vibration, which does not interfere with the overall vibration and air separation effect. Instead, it further optimizes the material agitation effect and avoids problems such as material jamming and blockage.

[0070] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure, comprising a shell (1) having an internal air separation chamber (12), wherein an inlet (11) for connecting the air separation chamber (12) is provided on the top outer wall of the shell (1), and a partition (13) dividing the air separation chamber (12) into two parts is provided on the inner wall of the shell (1), wherein a discharge port (14) and a waste discharge port (15) are respectively provided on the outer walls of the air separation chamber (12) on both sides of the partition (13), characterized in that, Also includes: The material guiding assembly is floatingly disposed below the feed inlet (11). The material guiding assembly includes a material guiding plate (2) with sieve holes (21) on its outer wall. The material guiding plate (2) is inclined toward the side where the discharge port (14) is located to prolong the material falling time. The vibration assembly is installed on the bottom outer wall of the guide plate (2) to drive the guide plate (2) to vibrate and change the vibration direction of the guide plate (2); The air separation assembly is rotatably connected inside the housing (1) and located below the guide plate (2). The air separation assembly includes a second electric push rod (43) and a fan (42). By controlling the extension stroke of the second electric push rod (43), the air direction of the fan (42) is changed. The detection component includes a laser rangefinder (7) fixed on the inner wall of the top of the air classifier (12), which determines the amount of material fed by detecting the distance between the guide plate (2) and the inner wall of the top of the air classifier (12); The control unit (6) is located on the outer wall of the housing (1). The control unit (6) is electrically connected to the laser rangefinder (7) and the second electric push rod (43), and controls the extension and retraction of the second electric push rod (43) according to the signal of the laser rangefinder (7).

2. The leafy vegetable non-contact pneumatic cleaner with a flow guiding structure according to claim 1, characterized in that: The vibration assembly includes a vibration motor (31), a support (24) is provided on the bottom outer wall of the guide plate (2), a first motor seat (3) is rotatably connected to the outer wall of the support (24), and the vibration motor (31) is fixedly installed on the outer wall of the first motor seat (3).

3. The leafy vegetable non-contact pneumatic cleaner with a flow guiding structure according to claim 1, characterized in that: The air separation assembly also includes a drive motor (41), a bracket (16) is provided on the inner wall of the housing (1), a second motor seat (4) is rotatably connected to the outer wall of the bracket (16), the drive motor (41) is fixedly installed on the outer wall of the second motor seat (4), the fan (42) is fixedly installed on the output shaft of the drive motor (41), the second electric push rod (43) is rotatably connected to the outer wall of the bracket (16), and the output end of the second electric push rod (43) is rotatably connected to the outer wall of the second motor seat (4).

4. The leafy vegetable non-contact pneumatic cleaner with a flow guiding structure according to claim 3, characterized in that: A second spring (44) is fixed on the outer wall of the second motor base (4), and the end of the second spring (44) away from the second motor base (4) is fixed on the outer wall of the first motor base (3).

5. A non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure according to claim 1, characterized in that: The guide plate (2) is movably disposed on the inner wall of the housing (1). A first spring (22) is provided between the outer wall of the guide plate (2) and the outer wall of the housing (1). A baffle (23) is provided on the outer wall of the guide plate (2) near the discharge port (14).

6. A non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure according to claim 5, characterized in that: The material guiding assembly also includes a first electric push rod (5) rotatably connected to the outer wall of the support (24). The output end of the first electric push rod (5) is rotatably connected to the outer wall of the first motor base (3). The baffle (23) is rotatably connected to the outer wall of the material guiding plate (2). A connecting rod (51) is rotatably connected to the outer wall of the baffle (23). The end of the connecting rod (51) away from the baffle (23) is rotatably connected to the outer wall of the first motor base (3).

7. A non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure according to claim 1, characterized in that: The laser rangefinder (7) vertically illuminates the guide plate (2).

8. A non-contact pneumatic cleaning machine for leafy vegetables with a flow guiding structure according to claim 1, characterized in that: The laser rangefinder (7) is tilted to illuminate the baffle (23).

Images