Centrifugal device for drying leafy vegetables

Abstract

The present invention discloses a device for drying leafy vegetables, in particular, a centrifugal device for drying leafy vegetables, comprising a screen drum and an electric control system, wherein the screen drum is placed horizontally and maintained at an inclined angle in the horizontal direction, and the screen drum has no central axis, and the sensor in the electric control system monitors the displacement of the screen drum from its reference position in real time, and converts it into an electrical signal to feed back to the control unit; the control unit receives the feedback electrical signal of the sensor, and sends a control signal to the power amplifier; the power amplifier receives the control signal of the control unit, and converts it into a control current, and the control current generates a magnetic force in the execution electromagnet to drive the screen drum to reset. It solves the technical problem of "providing a centrifugal device for drying leafy vegetables suitable for a leafy vegetable processing production line", and has the advantages of drying leafy vegetables on the production line and keeping the flow of leafy vegetable products on the production line uninterrupted, thereby improving the production and processing efficiency.

Description

Technical Field

[0001] The invention relates to a device for drying leafy vegetables, in particular to a centrifugal device for drying leafy vegetables. Background Art

[0002] Leafy vegetables need to be washed before processing. After removing the pesticides and pests remaining on the surface, the washing water on the surface also needs to be removed. Centrifugal drying is often used.

[0003] Existing centrifugal devices for drying leafy vegetables, such as a centrifugal concentration and drying device for agricultural product production and processing disclosed in the Chinese utility model patent document Patent No. 202121485497.2, can only be used as an independent drying device due to the disadvantages in structural design and are not suitable for leafy vegetable processing production lines.

[0004] Therefore, propose the present invention. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art and to provide a centrifugal device for drying leafy vegetables suitable for a leafy vegetable processing production line.

[0006] In order to achieve the above object, the present invention is designed to be a centrifugal device for drying leafy vegetables, which comprises:

[0007] a screen drum;

[0008] A pair of brackets, each bracket includes a mounting plate, a pair of support plates and a cover plate, the mounting plate and the cover plate are provided with a through hole for the screen drum to coaxially penetrate, the mounting plate is provided with three notches, which are arranged around the periphery of the through hole, and the opening of each notch is located at the edge of the mounting plate, a pair of support plates are fixed to a mounting plate, and are located on both sides of the through hole, a cover plate is fixed to the pair of support plates, and together with a mounting plate, forms a chamber;

[0009] A pair of pulley assemblies, each pulley assembly includes an annular slave pulley 1, two slave pulleys 2, a master pulley, three pulley shafts and three belts, the outer surface of the slave pulley 1 is provided with at least three belt grooves arranged in parallel, the two slave pulleys 2 and a master pulley are connected to a pulley shaft and always rotate around the central axis of the corresponding pulley shaft, a master pulley and a slave pulley 1 are driven by a belt, and the two slave pulleys 2 and a slave pulley 1 are independently linked by a belt;

[0010] A pair of motors, always keep rotating synchronously;

[0011] A pair of magnetic suspension components, each of which includes an annular mounting frame 1 and a plurality of electromagnets evenly distributed along the annular mounting frame 1 and embedded in the annular mounting frame 1;

[0012] A cylindrical assembled cover plate having at least one drainage opening;

[0013] A pair of high support legs;

[0014] a pair of low supporting legs;

[0015] and, an electronic control system including a sensor, a control unit, and a power amplifier;

[0016] Among them, a bracket, a pulley assembly, a motor and a magnetic suspension assembly are arranged at the two ends of a screen drum, and each end of the screen drum coaxially passes through the through holes on the mounting plate and cover plate of its corresponding bracket, the slave pulley 1 of its corresponding pulley assembly and the annular mounting frame 1 of its corresponding magnetic suspension assembly, a pair of magnetic suspension assemblies are located between a pair of brackets, and the slave pulley 1 of each pulley assembly is linked with the screen drum, and under the magnetic force generated by the electromagnet controlled by the electric control system, there is always a clearance fit between the annular mounting frame 1 of each magnetic suspension assembly and the screen drum, and there is also always a clearance fit between the through holes on the mounting plate and cover plate in each bracket and the screen drum, and each annular mounting frame 1 of the magnetic suspension assembly is fixed to the mounting plate of the bracket on the same side thereof, and the three pulley shafts of each pulley assembly are inserted into the three notches of the mounting plate in the bracket on the same side thereof, and are all passed through the leather The flange formed on the pulley shaft is fixed to the mounting plate, and a slave pulley 1, two slave pulleys 2, a main pulley and three belts of each pulley assembly are all located in the chamber of the bracket on the same side thereof, and the motor shaft of each motor is driven by the pulley shaft on the main pulley in the pulley assembly on the same side thereof, and the assembled cover plate is sleeved on the screen drum, which is located between a pair of brackets and covers a pair of magnetic suspension components, and the two ends of the assembled cover plate are respectively connected to the mounting plate of the bracket on the same side thereof, a pair of high supporting legs supports one side bracket on the screen drum, and is connected one by one with the air bags on the pair of supporting plates of the corresponding brackets, and a pair of low supporting legs supports the other side bracket on the screen drum, and is connected one by one with the air bags on the pair of supporting plates of the corresponding brackets, and the structural design of the high and low supporting feet ensures that the screen drum supported by them can maintain the inclination angle of the reference position in the horizontal direction during operation;

[0017] Among them, the sensor in the above-mentioned electric control system monitors the displacement of the screen drum from its reference position in real time, and converts the displacement into an electrical signal and feeds it back to the control unit; the control unit receives the feedback electrical signal from the sensor, and sends a control signal to the power amplifier; the power amplifier receives the control signal from the control unit and converts it into a control current, and the control current generates a magnetic force in the actuator electromagnet to drive the screen drum to reset.

[0018] When the above-mentioned centrifugal device is in operation, the screen drum is placed horizontally and maintains a certain inclination angle in the horizontal direction. The conveyor belt in the leafy vegetable processing production line can shuttle back and forth in the screen drum along its axial direction. The conveyor belt enters the screen drum, and the leafy vegetables on the conveyor belt are synchronously dumped onto the screen drum. The leafy vegetables are circulated and dried due to the centrifugal force generated by the rotation of the screen drum. At this time, the conveyor belt is reset to the outside of the screen drum to prepare materials. The leafy vegetables in the screen drum wait for the centrifugal force to disappear after the screen drum slows down or stops rotating, and then slide along the inclination direction of the screen drum and are collected outside the screen drum. At the same time, the accumulated water that passes through the screen drum due to the centrifugal force and is collected between the screen drum and the assembled cover plate is discharged through the drain port. At this time, the conveyor belt enters the screen drum again, so as to repeatedly dry the leafy vegetables on the leafy vegetable processing production line through the centrifugal device of the present invention, and keep the flow of leafy vegetable products on the production line uninterrupted.

[0019] In addition, the centrifugal device of the present invention combines dynamic balancing technology and belt suspension drum technology in its structural design, wherein the magnetic suspension technology is utilized to completely avoid the situation where "mechanical wear during the rotation of the screen drum, thereby affecting the service life of the device", and the magnetic suspension proximity distance simulation technology is utilized to achieve negative feedback to accurately control the center and inclination angle of the screen drum.

[0020] The structure of the centrifugal device for drying leafy vegetables preferably further includes:

[0021] A pair of permanent magnet assemblies, each of which includes a second annular mounting frame and a plurality of permanent magnets evenly distributed along the second annular mounting frame and embedded in the second annular mounting frame;

[0022] A pair of permanent magnet assemblies are respectively sleeved on the two ends of the screen drum, and the permanent magnet assembly and the magnetic suspension assembly on each end of the screen drum are both concentric circle structures. Under the magnetic force generated by the electromagnet controlled by the electric control system, the annular mounting frame 1 of each magnetic suspension assembly and the annular mounting frame 2 of its corresponding permanent magnet assembly are always in clearance fit.

[0023] The permanent magnet assembly in the above preferred technical solution can enhance the magnetic induction intensity during the process in which the magnetic suspension assembly applies magnetic force to the screen drum.

[0024] The structure of the centrifugal device for drying leafy vegetables preferably further includes:

[0025] Multiple transverse supporting circular tubes, all of which are located between a pair of brackets and extend in the direction of the central axis of the screen drum until they are connected to the brackets on the corresponding sides. All of the transverse supporting circular tubes are evenly distributed on the outer circumference of the screen drum.

[0026] The transverse supporting circular tube in the above preferred technical solution can enhance the overall structural stability of the device and further ensure that the centrifugal device remains quiet during operation.

[0027] The above centrifugal device for drying leafy vegetables further preferably comprises:

[0028] A cover plate is connected to the cover plate of the bracket on the same side as the lower support leg and is located above the corresponding port of the screen drum.

[0029] When the centrifugal device of the present invention is in operation, the cover plate in the above preferred technical solution is located at the upper edge of the port of the sieve cylinder on the same side as the lower support leg (i.e., the inclined lower end of the sieve cylinder), which can prevent the leafy vegetables in the sieve cylinder from splashing when they slide out of the sieve cylinder.

[0030] Compared with the prior art, the centrifugal device of the present invention has the following advantages:

[0031] 1. The centrifugal device of the present invention has a structural design in which the center of the screen drum has no central axis, and is suitable for a leafy vegetable processing production line. The centrifugal device can dry the leafy vegetables on the leafy vegetable processing production line and keep the flow of leafy vegetable products on the production line uninterrupted, thereby improving the production and processing efficiency of the production line.

[0032] 2. The centrifugal device of the present invention combines dynamic balancing technology and belt suspension drum technology in its structural design, wherein the magnetic suspension technology is used to completely avoid the situation where "mechanical wear during the rotation of the screen drum affects the service life of the device", and the magnetic suspension proximity distance simulation technology is used to achieve negative feedback to accurately control the center and inclination angle of the screen drum.

[0033] 3. The centrifugal device of the present invention has good overall structural stability and operates quietly and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the first centrifugal device;

[0035] Figure 2 It is a schematic diagram of the half-section structure of the first centrifugal device;

[0036] Figure 3 It is a schematic diagram of the installation structure of the bracket and the pulley assembly on one side of the screen drum in the first centrifugal device (the cover of the bracket is hidden);

[0037] Figure 4 It is a schematic diagram of the installation structure of the upper bracket, the pulley assembly and the magnetic suspension assembly on one side of the screen drum in the first centrifugal device (the cover of the bracket is hidden);

[0038] Figure 5 It is a schematic diagram of the installation structure of the upper bracket, the pulley assembly, the magnetic suspension assembly and the permanent magnet assembly on one side of the screen drum in the second centrifugal device (the cover of the bracket is hidden);

[0039] Figure 6 It is a schematic diagram of the position structure of the magnetic suspension component and the permanent magnet component in the second centrifugal device;

[0040] Figure 7 is a schematic diagram of the three-dimensional structure of the third centrifugal device;

[0041] Figure 8 It is a schematic diagram of the three-dimensional structure of the fourth centrifugal device.

[0042] In the figure: screen drum 1, mounting plate 2, support plate 3, cover plate 4, notch 5, chamber 6, slave pulley 1 7, slave pulley 2 8, main pulley 9, pulley shaft 10, belt 11, belt groove 12, motor 13, annular mounting frame 1 14, electromagnet 15, assembled cover plate 16, drain port 17, high support leg 18, low support leg 19, flange 20, air bag 21, annular mounting frame 2 22, permanent magnet 23, transverse support circular tube 24, cover plate 25. Implementation

[0043] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0044] like Figure 1-4 As shown, as an embodiment of the present invention, a centrifugal device for drying leafy vegetables provided in this embodiment includes:

[0045] A screen drum 1;

[0046] A pair of brackets, each bracket includes a mounting plate 2, a pair of support plates 3 and a cover plate 4, the mounting plate 2 and the cover plate 4 are provided with a through hole for the screen drum 1 to pass through coaxially, the mounting plate 2 is provided with three notches 5, which are arranged around the periphery of the through hole, and the opening of each notch 5 is located at the edge of the mounting plate 2, a pair of support plates 3 are fixed to a mounting plate 2, and are located on both sides of the through hole, a cover plate 4 is fixed to the pair of support plates 3, and together with a mounting plate 2, a chamber 6 is formed;

[0047] A pair of pulley assemblies, each pulley assembly includes an annular slave pulley 1 7, two slave pulleys 2 8, a master pulley 9, three pulley shafts 10 and three belts 11, the outer surface of the slave pulley 1 7 is provided with at least three belt grooves 12 and arranged in parallel, the two slave pulleys 2 8 and the master pulley 9 are connected to a pulley shaft 10, and always rotate around the central axis of the corresponding pulley shaft 10, a master pulley 9 and a slave pulley 1 7 are driven by a belt 11, and the two slave pulleys 2 8 and a slave pulley 1 7 are independently linked by a belt 11;

[0048] A pair of motors 13 always keep synchronous rotation;

[0049] A pair of magnetic suspension components, each of which includes an annular mounting frame 14 and a plurality of electromagnets 15 evenly distributed along the annular mounting frame 14 and embedded in the annular mounting frame 14;

[0050] A cylindrical assembled cover plate 16 having at least one drainage opening 17;

[0051] a pair of high support legs 18;

[0052] a pair of low supporting legs 19;

[0053] and, an electronic control system (not shown), including a sensor, a control unit, and a power amplifier;

[0054] Among them, a bracket, a pulley assembly, a motor 13 and a magnetic suspension assembly are arranged at the two ends of a screen drum 1, and each end of the screen drum 1 coaxially passes through the through holes on the mounting plate 2 and the cover plate 4 of its corresponding bracket, the slave pulley 7 of its corresponding pulley assembly and the annular mounting frame 14 of its corresponding magnetic suspension assembly, a pair of magnetic suspension assemblies are located between a pair of brackets, and the slave pulley 7 of each pulley assembly is linked with the screen drum 1. Under the magnetic force generated by the electromagnet 15 controlled by the electric control system, the annular mounting frame 14 of each magnetic suspension assembly is always in a clearance fit with the screen drum 1, and the through holes on the mounting plate 2 and the cover plate 4 in each bracket are also always in a clearance fit with the screen drum 1. The annular mounting frame 14 of each magnetic suspension assembly is fixed to the mounting plate 2 of the bracket on the same side, and the three pulley shafts 10 of each pulley assembly are inserted into the bracket on the same side. The bracket is in the three notches 5 of the mounting plate 2, and is fixed to the mounting plate 2 through the flange 20 formed on the pulley shaft 10. A slave pulley 1 7, two slave pulleys 8, a main pulley 9 and three belts 11 of each pulley assembly are all located in the chamber 6 of the bracket on the same side. The motor shaft of each motor 13 is driven by the pulley shaft 10 on the main pulley 9 in the pulley assembly on the same side. The assembled cover plate 16 is sleeved on the screen drum 1, which is located between a pair of brackets and covers a pair of magnetic suspension components. The two ends of the assembled cover plate 16 are respectively connected to the mounting plate 2 of the bracket on the same side. A pair of high support legs 18 support one side bracket on the screen drum 1, and are connected one by one with the air bags 21 on the pair of support plates 3 of the corresponding brackets. A pair of low support legs 19 support the other side bracket on the screen drum 1, and are connected one by one with the air bags 21 on the pair of support plates 3 of the corresponding brackets.

[0055] Among them, the sensor in the above-mentioned electric control system monitors the displacement of the screen drum 1 from its reference position in real time, and converts the displacement into an electrical signal to feed back to the control unit; the control unit receives the feedback electrical signal of the sensor and sends a control signal to the power amplifier; the power amplifier receives the control signal of the control unit and converts it into a control current, and the control current generates a magnetic force in the execution electromagnet 15 to drive the screen drum 1 to reset. For example, when the screen drum 1 is subjected to a downward disturbance at the reference position, it will deviate from its reference position. At this time, the sensor detects the displacement of the screen drum 1 from the reference position. The microprocessor as the control unit converts the detected displacement into a control signal, and then the power amplifier converts the above-mentioned control signal into a control current, and the control current generates a magnetic force in the execution electromagnet 15. At this time, the magnetic attraction generated by the electromagnet 15 above the screen drum 1 drives the screen drum 1 to its side, and the magnetic thrust generated by the electromagnet 15 below the screen drum 1 drives the screen drum 1 to the opposite side, thereby driving the screen drum 1 to quickly return to the original reference position. Therefore, by analogy, no matter whether the screen drum 1 is disturbed downward, upward, left or right, it can always be in a stable equilibrium state.

[0056] When the above-mentioned centrifugal device is in operation, the screen drum 1 is placed horizontally and maintains a certain inclination angle in the horizontal direction. The conveyor belt in the leafy vegetable processing production line can shuttle back and forth in the screen drum 1 along its axial direction. The conveyor belt enters the screen drum 1, and the leafy vegetables on the conveyor belt are synchronously dumped onto the screen drum 1. The leafy vegetables are circulated and dried due to the centrifugal force generated by the rotation of the screen drum 1. At this time, the conveyor belt is reset to the outside of the screen drum 1 to prepare materials. The leafy vegetables in the screen drum 1 wait for the centrifugal force to disappear after the screen drum 1 slows down or stops rotating, and then slide along the inclination direction of the screen drum 1 and are collected outside the screen drum 1. At the same time, the accumulated water that passes through the screen drum 1 due to the centrifugal force and is collected between the screen drum 1 and the assembled cover plate 16 is discharged through the drain port 17. At this time, the conveyor belt enters the screen drum 1 again, so as to repeatedly dry the leafy vegetables on the leafy vegetable processing production line through the centrifugal device of the present invention, and keep the flow of leafy vegetable products on the production line uninterrupted.

[0057] In addition, the centrifugal device of the present invention combines dynamic balancing technology and belt suspension drum technology in its structural design, wherein the magnetic suspension technology is used to completely avoid the situation where "mechanical wear during the rotation of the screen drum 1 thereby affecting the service life of the device", and the magnetic suspension proximity distance simulation technology is used to achieve negative feedback to accurately control the center and inclination angle of the screen drum 1.

[0058] As a second embodiment of the present invention, a centrifugal device for drying leafy vegetables is provided in this embodiment. Figure 5 and Figure 6As shown, its structure also includes: a pair of permanent magnet assemblies, each of which includes an annular mounting frame 22 and a plurality of permanent magnets 23 evenly distributed along the annular mounting frame 22 and embedded in the annular mounting frame 22; a pair of permanent magnet assemblies are respectively sleeved on the two ends of the screen drum 1, and the permanent magnet assemblies and magnetic suspension assemblies on each end of the screen drum 1 are concentric circle structures. Under the magnetic force generated by the electromagnet 15 controlled by the electric control system, the annular mounting frame 14 of each magnetic suspension assembly and the annular mounting frame 22 of its corresponding permanent magnet assembly are always in a clearance fit.

[0059] The permanent magnet assembly can enhance the magnetic induction intensity during the process in which the magnetic suspension assembly applies magnetic force to the screen drum 1 .

[0060] As a third embodiment of the present invention, a centrifugal device for drying leafy vegetables is provided in this embodiment. Figure 7 As shown, its structure also includes: a plurality of transverse supporting circular tubes 24, all of which are located between a pair of brackets and extend in the direction of the central axis of the screen drum 1 until they are connected to the brackets on the corresponding sides, and all of which are evenly distributed on the outer circumference of the screen drum 1.

[0061] The above-mentioned transverse supporting circular tube 24 can enhance the overall structural stability of the device and further ensure that the centrifugal device remains quiet during operation.

[0062] As a fourth embodiment of the present invention, a centrifugal device for drying leafy vegetables is provided in this embodiment. Figure 8 As shown, the structure also includes: a cover plate 25, which is connected to the cover plate 4 of the bracket on the same side as the low supporting leg 19 and is located above the corresponding port of the screen drum 1.

[0063] When the centrifugal device of the present invention is in operation, the cover plate 25 is located at the upper edge of the port of the sieve cylinder 1 on the same side as the lower support leg 19 (i.e., the inclined lower end of the sieve cylinder 1), so that leafy vegetables in the sieve cylinder 1 can be prevented from splashing when they slide down from the sieve cylinder 1.

[0064] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A centrifugal device for drying leafy vegetables, characterized in that: include: a screen drum; A pair of brackets, each bracket includes a mounting plate, a pair of support plates and a cover plate, the mounting plate and the cover plate are provided with a through hole for the screen drum to coaxially penetrate, the mounting plate is provided with three notches, which are arranged around the periphery of the through hole, and the opening of each notch is located at the edge of the mounting plate, a pair of support plates are fixed to a mounting plate, and are located on both sides of the through hole, a cover plate is fixed to the pair of support plates, and together with a mounting plate, forms a chamber; A pair of pulley assemblies, each pulley assembly includes an annular slave pulley 1, two slave pulleys 2, a master pulley, three pulley shafts and three belts, the outer surface of the slave pulley 1 is provided with at least three belt grooves arranged in parallel, the two slave pulleys 2 and a master pulley are connected to a pulley shaft and always rotate around the central axis of the corresponding pulley shaft, a master pulley and a slave pulley 1 are driven by a belt, and the two slave pulleys 2 and a slave pulley 1 are independently linked by a belt; A pair of motors, always keep rotating synchronously; A pair of magnetic suspension components, each of which includes an annular mounting frame 1 and a plurality of electromagnets evenly distributed along the annular mounting frame 1 and embedded in the annular mounting frame 1; A cylindrical assembled cover plate having at least one drainage opening; A pair of high support legs; a pair of low supporting legs; and, an electronic control system including a sensor, a control unit, and a power amplifier; in, A bracket, a pulley assembly, a motor and a magnetic suspension assembly are arranged at both ends of a screen drum, and each end of the screen drum coaxially penetrates the through holes on the mounting plate and cover plate of its corresponding bracket, the slave pulley of its corresponding pulley assembly and the annular mounting frame of its corresponding magnetic suspension assembly. A pair of magnetic suspension components are located between a pair of brackets. The slave pulley of each pulley assembly is linked with the screen drum. Under the magnetic force generated by the electromagnet controlled by the electric control system, there is always a clearance fit between the annular mounting frame of each magnetic suspension component and the screen drum, and there is also always a clearance fit between the through holes on the mounting plate and cover plate in each bracket and the screen drum. The annular mounting frame of each magnetic suspension component is fixed to the mounting plate of the bracket on the same side. The three pulley shafts of each pulley assembly are inserted into the three notches of the mounting plate in the bracket on the same side, and are fixed to the mounting plate through the flange formed on the pulley shaft. One slave pulley 1, two slave pulleys 2, one master pulley and three belts of each pulley assembly are all located in the chamber of the bracket on the same side. The motor shaft of each motor is driven by the pulley shaft on the main pulley in the pulley assembly on the same side. The assembled cover plate is sleeved on the screen drum, located between a pair of brackets and covering a pair of magnetic suspension components. The two ends of the assembled cover plate are respectively connected to the mounting plates of the brackets on the same side. A pair of high supporting legs supports one side bracket on the screen drum, and is connected to the air bags on a pair of supporting plates of the corresponding bracket one by one. A pair of low support legs supports the other side bracket on the screen drum and is connected one by one with the air bags on a pair of support plates of the corresponding bracket; in, The sensor monitors the displacement of the screen drum from its reference position in real time and converts the displacement into an electrical signal to feed back to the control unit; The control unit receives the feedback electrical signal from the sensor and sends a control signal to the power amplifier; The power amplifier receives the control signal from the control unit and converts it into a control current, which generates a magnetic force in the actuator electromagnet to drive the screen drum to reset.

2. A centrifugal device for drying leafy vegetables according to claim 1, characterized in that: Also includes: A pair of permanent magnet assemblies, each of which includes a second annular mounting frame and a plurality of permanent magnets evenly distributed along the second annular mounting frame and embedded in the second annular mounting frame; A pair of permanent magnet assemblies are respectively sleeved on the two ends of the screen drum, and the permanent magnet assembly and the magnetic suspension assembly on each end of the screen drum are both concentric circle structures. Under the magnetic force generated by the electromagnet controlled by the electric control system, the annular mounting frame 1 of each magnetic suspension assembly and the annular mounting frame 2 of its corresponding permanent magnet assembly are always in clearance fit.

3. A centrifugal device for drying leafy vegetables according to claim 1 or 2, characterized in that: Also includes: Multiple transverse supporting circular tubes, all of which are located between a pair of brackets and extend in the direction of the central axis of the screen drum until they are connected to the brackets on the corresponding sides. All of the transverse supporting circular tubes are evenly distributed on the outer circumference of the screen drum.

4. A centrifugal device for drying leafy vegetables according to claim 1 or 2, characterized in that: Also includes: A cover plate is connected to the cover plate of the bracket on the same side as the lower support leg and is located above the corresponding port of the screen drum.

5. A centrifugal device for drying leafy vegetables according to claim 3, characterized in that: Also includes: A cover plate is connected to the cover plate of the bracket on the same side as the lower support leg and is located above the corresponding port of the screen drum.

Images