Automatic screening equipment for scented tea production

Abstract

The application discloses a kind of automatic screening equipment for scented tea production, belong to scented tea production and processing technical field, including frame, swing type screening mechanism and air flushing anti-blocking mechanism, the swing type screening mechanism is inclined rotation and is located in frame, the air flushing anti-blocking mechanism coaxial rotation sleeve is located in the outside of swing type screening mechanism.The application provides a kind of automatic screening equipment for scented tea production, effectively control scented tea sliding speed, improve screening thoroughness, prevent mesh blockage simultaneously, to meet the actual demand of high-quality production for scented tea processing industry.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of scented tea production and processing, and particularly relates to an automatic screening device for scented tea production. BACKGROUND

[0002] In the production and processing of scented tea, a screening process is usually required to separate scented tea and impurities of different particle sizes, so as to ensure product quality. Traditional scented tea screening devices usually adopt a vibrating screen or a rotary drum screen, which relies on mechanical vibration or rotation to move scented tea on the screen cylinder to achieve grading and screening.

[0003] However, the existing screening devices still have the following problems in actual application:

[0004] 1. Scented tea slides too fast, and screening is not complete: due to the light weight and smooth surface of scented tea, it is easy to slide quickly through the screen mesh due to gravity or vibration during the screening process, resulting in the problem of low screening efficiency and inaccurate grading, which affects the uniformity of the final product.

[0005] 2. Scented tea is easy to block the screen mesh: when scented tea is screened, it is easy to be stuck in the screen mesh, and the blockage of the screen mesh not only reduces the screening efficiency, but also requires frequent shutdown for cleaning, increasing the cost of manual maintenance and seriously affecting the continuity of production.

[0006] Although some screening devices in the prior art add cleaning brushes or adjust the vibration frequency to alleviate the above problems, they still cannot meet the needs of high-efficiency screening and anti-blocking. SUMMARY

[0007] In view of the above problems, the present application provides an automatic screening device for scented tea production, which effectively controls the sliding speed of scented tea, improves the completeness of screening, and prevents the blockage of the screen mesh, so as to meet the actual needs of the scented tea processing industry for high-quality production.

[0008] The technical scheme adopted by the present application is as follows: the automatic screening device for scented tea production provided by the present application comprises a rack, a swing type screening mechanism and a gas flushing anti-blocking mechanism, the swing type screening mechanism is inclined and rotatable arranged in the rack, and the gas flushing anti-blocking mechanism is coaxially rotatable arranged outside the swing type screening mechanism;

[0009] The swing type screening mechanism comprises a plurality of groups of screen cylinders which are coaxially nested from inside to outside, and an end cover fixed to one side of the screen cylinder, uniform annular gaps are arranged between adjacent screen cylinders, and the plurality of groups of screen cylinders are fixedly installed on the side wall of the end cover, a rotating shaft is rotatably arranged on the rack, a swing seat one and a swing seat two are fixedly arranged on the rotating shaft in sequence along the axial direction, the swing seat one is fixedly connected with the end cover, a swing ring is fixedly connected on the swing seat two, the swing ring is coaxially arranged with the end cover, a feeding hole is arranged on the end cover, and a swing drive is arranged on the rack to drive the rotating shaft to reciprocate.

[0010] The air-jet anti-blocking mechanism includes an air source and a rotating drum with an opening on one side. The rotating drum is rotatably mounted inside a swing ring, and the opening side of the rotating drum is rotatably connected to the end cap. The rotating drum is coaxially mounted on the outside of multiple sets of screen drums. A directional adjustment mechanism is provided between the rotating drum and the frame to keep the rotating drum always vertically downward. Air jet components that spray upwards are symmetrically provided on both sides of the bottom wall of the rotating drum. The air source is located on one side of the frame and is connected to the air jet components.

[0011] The sieve cylinder is equipped with a serpentine sliding component that allows the flower tea to slide down in a serpentine path. The serpentine sliding component includes a first baffle and a second baffle. The first baffle and the second baffle are arranged at intervals and staggered along the axial direction of the sieve cylinder. The first baffle and the second baffle are arranged in a fan shape and are coaxial with the sieve cylinder.

[0012] The air source delivers a high-speed airflow to the jet assembly, which then sprays it obliquely upwards towards the sieve cylinder. The airflow flows from the bottom to the top of the sieve cylinder, blowing away the flower tea clogging the mesh. The directional mechanism keeps the rotating cylinder vertically downward at all times. As the sieve cylinder swings back and forth, the directional mechanism drives the rotating cylinder to rotate relative to the sieve cylinder, achieving self-adjustment. The rotation of the rotating cylinder relative to the sieve cylinder allows the jet assembly to blow airflow in opposite directions at different positions on the sieve cylinder, effectively preventing clogging.

[0013] Preferably, the screen cylinder and the serpentine sliding assembly are in one-to-one correspondence, and each screen cylinder is provided with a set of serpentine sliding assemblies. The structure of the first baffle and the second baffle is the same. The cross-section of the first baffle and the cross-section of the second baffle are mirror symmetrical with the line connecting the axis of rotation and the axis of the screen cylinder as the reference line. The axial projection of the first baffle and the axial projection of the second baffle partially overlap. The overlap angle between the first baffle and the second baffle is slightly smaller than the swing angle of the swing screening mechanism.

[0014] The frame includes a base plate and an inverted U-shaped fixed frame. The upper wall of the base plate is inclined, and the fixed frame is vertically mounted on the upper wall of the base plate. The steering mechanism includes a transverse guide rail and a support rod fixed to the bottom of the rotating drum. The transverse guide rail has follower sleeves at both ends. The follower sleeves are slidably mounted on the fixed frame. The transverse guide rail slides along the height direction of the fixed frame through the follower sleeves. The support rod is L-shaped, and the end of the support rod has a sliding block that is slidably connected to the transverse guide rail.

[0015] Preferably, an air supply pipeline is provided between the air source and the jet assembly on both sides of the rotating drum. The air supply pipeline is symmetrically arranged on both sides of the rotating drum. The jet assembly includes multiple sets of nozzles arranged at equal intervals along the axis of the rotating drum. The airflow coverage of two adjacent sets of nozzles overlaps. The nozzles are arranged obliquely upward.

[0016] When the rotating shaft drives the end cover and screen cylinder to swing, the end cover drives the rotating cylinder to rotate around the circumference of the rotating shaft. The transverse guide rail restricts the rotating cylinder through the sliding block and the support rod, causing the rotating cylinder to rotate relative to the screen cylinder, so that the rotating cylinder always remains vertically downward. The horizontal movement generated by the swing of the rotating cylinder causes the sliding block to move horizontally along the transverse guide rail. The vertical movement generated by the swing of the rotating cylinder causes the transverse guide rail and the follower sliding sleeve to slide up and down along the fixed frame.

[0017] Furthermore, a dual-path gas switching assembly is provided between the gas supply pipeline and the gas source. The dual-path gas switching assembly adopts a two-position three-way solenoid valve with one inlet and two outlets. The two-position three-way solenoid valve has one inlet end and two outlet ends. When the solenoid valve coil is energized, the first outlet end opens and the second outlet end closes; when the solenoid valve coil is de-energized, the first outlet end closes and the second outlet end opens. A gas delivery hose is provided between the inlet end of the two-position three-way solenoid valve and the gas source. The two outlet ends of the two-position three-way solenoid valve are respectively connected to two gas supply pipelines. The two-position three-way solenoid valve controls the gas to switch between the two gas supply pipelines, so that the gas is sprayed out from different sides of the rotating drum and blows the screen cylinder in opposite directions.

[0018] Preferably, the frame is equipped with a controller, and the middle of the transverse guide rail is equipped with an obstruction sensor. The controller is electrically connected to the obstruction sensor and a two-position three-way solenoid valve.

[0019] When the sliding block slides past the middle of the transverse guide rail, it triggers the occlusion sensor to generate an electrical signal, which is sent to the controller. The controller then controls the two-position three-way solenoid valve to switch directions. Each time the occlusion sensor is triggered, the controller controls the two-position three-way solenoid valve to switch directions once.

[0020] Preferably, a discharge mechanism is fixedly connected to the rear end of the rotating drum. The discharge mechanism includes multiple sets of coaxially nested discharge cylinders from the inside to the outside. A uniform annular gap is provided between adjacent discharge cylinders. Each discharge cylinder is open on one side and corresponds to a screen cylinder. The open side of the discharge cylinder is coaxially connected to the tail end of the screen cylinder. The outermost discharge cylinder passes through the side wall of the rotating drum and is coaxially fixedly connected to the outermost screen cylinder. The length of the multiple sets of discharge cylinders increases sequentially from the outside to the inside. The tail end of the inner discharge cylinder passes through the tail end of the adjacent outer discharge cylinder and extends out of the adjacent outer discharge cylinder. A discharge port is provided on the bottom wall of the tail end of the discharge cylinder. Multiple sets of receiving boxes are provided at the tail end of the frame. A discharge port is provided on the upper wall of the receiving box. A flexible discharge pipe is connected between the discharge port and the discharge port. The discharge cylinder, discharge port, flexible discharge pipe and receiving box correspond to each other.

[0021] Preferably, the mesh size of the multiple sets of sieve cylinders decreases sequentially from the inside to the outside. The feed hole is connected to the innermost sieve cylinder. The tea to be sieved falls into the innermost sieve cylinder through the feed hole and is then sieved in multiple stages from the inside to the outside.

[0022] Preferably, the arc length of the rotating cylinder between the two symmetrical sets of jet components is greater than one-quarter of the circumference of the rotating cylinder and less than one-half the circumference of the rotating cylinder, ensuring that when the rotating cylinder rotates around the sieve cylinder under the action of the directional mechanism, the jet components can blow airflow onto the lower half of the sieve cylinder, and the flower tea will not cover the jet components.

[0023] Preferably, the air supply pipeline includes an air supply hose and an air supply chamber. The air supply chamber is located on the side wall of the rotating drum and is connected to the nozzle. The air supply hose is connected between the air source and the air supply chamber.

[0024] The air source includes an air compressor and an air storage tank. The air storage tank is located on one side of the frame, and the air compressor is located above the air storage tank. The air compressor is connected to the air storage tank, and the air storage tank is connected to the air delivery hose.

[0025] Preferably, the bottom end of the rotating drum is provided with a ash discharge hole, and the ash discharge hole is connected to an ash discharge hopper that runs vertically through the drum. The ash discharge hopper facilitates the discharge of dust and debris from the rotating drum, and the bottom end of the ash discharge hopper is equipped with an ash collection chamber.

[0026] Furthermore, the swing drive includes a swing arm and a reciprocating assembly. One end of the swing arm is fixedly connected to a rotating shaft. The swing arm is provided with a push-pull slide groove. The reciprocating assembly is mounted on a frame. The output end of the reciprocating assembly is provided with a reciprocating slider. The side wall of the reciprocating slider is provided with a sliding shaft. The sliding shaft is slidably engaged in the push-pull slide groove. The reciprocating assembly drives the reciprocating slider and the sliding shaft to slide back and forth. The reciprocating slider drives the swing arm to swing back and forth through the sliding shaft and the push-pull slide groove.

[0027] More specifically, the reciprocating assembly includes a reciprocating slide groove, a bidirectional lead screw, a nut slider, and a drive motor. The reciprocating slide groove is mounted on the frame, the bidirectional lead screw is rotatably mounted within the reciprocating slide groove, the drive motor is mounted on the side wall of the frame, and the output end of the drive motor is connected to the bidirectional lead screw. The nut slider is slidably engaged within the reciprocating slide groove and is connected to the lead screw. The reciprocating slider is mounted on the side wall of the nut slider and slides along the reciprocating slide groove.

[0028] The drive motor drives the bidirectional lead screw to rotate, and the bidirectional lead screw drives the nut slider to slide back and forth along the reciprocating slide groove. The nut slider drives the reciprocating slider to slide along the reciprocating slide groove.

[0029] Preferably, the front end of the frame is provided with a feeding mechanism, which includes a storage hopper and a feeding hose. The storage hopper is fixedly located at the front end of the frame, and the feeding hose is connected between the storage hopper and the feed hole. The storage hopper is equipped with a vibration motor to assist feeding through vibration.

[0030] The beneficial effects achieved by the present invention using the above structure are as follows:

[0031] 1. By staggering the front and rear baffles of the serpentine sliding component, and in conjunction with the reciprocating oscillating sieve cylinder, the flower tea is forced to slide down in a serpentine path, extending the residence time of the flower tea in the sieve cylinder, ensuring thorough sieving, and avoiding the problem of incomplete sieving caused by excessively fast sliding.

[0032] 2. The swing-type sieve cylinder can cause the flower tea to roll inside the sieve cylinder, so that the flower tea comes into contact with different parts of the sieve cylinder, thereby improving the sieving efficiency.

[0033] 3. The air-jet anti-clogging mechanism is adopted. High-pressure airflow is sprayed obliquely upward from the bottom of the screen cylinder. The airflow pushes the blockage out of the screen cylinder mesh, resulting in good cleaning effect. It can achieve the technical effect of cleaning while screening, effectively preventing blockage and eliminating the need for frequent machine shutdowns for cleaning.

[0034] 4. The rotating drum is connected to the screen cylinder by a rotating mechanism, which keeps the rotating drum vertical. This allows the rotating drum to rotate relative to the screen cylinder, so that the air jet assembly can blow air to clean different parts of the screen cylinder.

[0035] 5. The multi-layer coaxial sieve cylinder design enables multi-stage sieving to meet the grading requirements of flower tea with different particle sizes. The discharge mechanism corresponds one-to-one with the sieve cylinder for graded collection, avoiding mixing and contamination.

[0036] 6. Set up ash discharge hoppers and ash collection chambers to collect dust and debris, keep the inside of the equipment clean, and facilitate cleaning. Attached Figure Description

[0037] Figure 1 This invention provides a schematic diagram of the structure of an automatic screening device for flower tea production;

[0038] Figure 2 A schematic diagram of the structure of an automatic screening device for flower tea production provided by the present invention from another perspective;

[0039] Figure 3 A schematic diagram of the combined structure of the frame, swing drive and receiving box provided by the present invention;

[0040] Figure 4 A schematic diagram of the combined structure of the frame, oscillating screening mechanism, adjusting mechanism, rotating drum, discharge mechanism and air supply pipeline provided by the present invention;

[0041] Figure 5 A schematic diagram of the combined structure of the oscillating screening mechanism, rotating drum, discharge mechanism and air supply pipeline provided by the present invention;

[0042] Figure 6 A cross-sectional view of the oscillating screening mechanism, rotating drum, discharge mechanism, and air supply pipeline provided by the present invention;

[0043] Figure 7A cross-sectional schematic diagram of the rotating drum, sieve drum, and air jet assembly provided by the present invention;

[0044] Figure 8 This is a schematic diagram of the structure of the oscillating screening mechanism provided by the present invention;

[0045] Figure 9 A schematic diagram illustrating the state changes of the oscillating screening mechanism provided by the present invention;

[0046] Figure 10 This is a schematic diagram of the structure of the rotating drum provided by the present invention;

[0047] Figure 11 A cross-sectional view of the reciprocating component provided by the present invention.

[0048] The components include: 1. Frame; 2. Swinging screening mechanism; 3. Air-jet anti-clogging mechanism; 4. Screen cylinder; 5. End cover; 6. Rotating shaft; 7. Swing seat one; 8. Swing seat two; 9. Swing ring; 10. Feed hole; 11. Swing drive; 12. Air source; 13. Rotating cylinder; 14. Direction adjustment mechanism; 15. Air jet assembly; 16. Serpentine sliding assembly; 17. Baffle one; 18. Baffle two; 19. Base plate; 20. Fixing frame; 21. Transverse guide rail; 22. Support rod; 23. Follow-up sliding sleeve; 24. Sliding block; 25. Air supply pipeline; 26. Nozzle; 27. Air supply hose; 28. Air supply chamber; 29. ​​Gas dual-channel system. 30. Path switching component, 31. Air supply hose, 32. Controller, 33. Obstruction sensor, 34. Discharge mechanism, 35. Discharge cylinder, 36. Discharge port, 37. Receiving box, 38. Flexible discharge pipe, 39. Air compressor, 40. Air tank, 41. Swing rod, 42. Reciprocating assembly, 43. Push-pull slide, 44. Reciprocating slider, 45. Sliding shaft, 46. Reciprocating slide, 47. Bidirectional lead screw, 48. Nut slider, 49. Drive motor, 50. Storage hopper, 51. Discharge hose, 52. Vibration motor, 53. Ash discharge through hole, 54. Ash discharge hopper, 55. Ash collection chamber, 56. Discharge port.

[0049] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Example 1, as Figures 1-11 As shown, the present invention provides an automatic screening device for flower tea production, including a frame 1, a swing screening mechanism 2 and an air-jet anti-blocking mechanism 3. The swing screening mechanism 2 is tilted and rotatably disposed inside the frame 1, and the air-jet anti-blocking mechanism 3 is coaxially rotatably sleeved on the outside of the swing screening mechanism 2.

[0053] The swing screening mechanism 2 includes multiple sets of screen cylinders 4 nested coaxially from the inside out and an end cover 5 fixedly disposed on one side of the screen cylinder 4. Adjacent screen cylinders 4 maintain a uniform annular gap. Multiple sets of screen cylinders 4 are fixedly installed on the side wall of the end cover 5. A rotating shaft 6 is rotatably disposed on the frame 1. A swing seat 7 and a swing seat 8 are fixedly disposed on the rotating shaft 6 along the axial direction. The swing seat 7 is fixedly connected to the end cover 5. A swing ring 9 is fixedly connected to the swing seat 8. The swing ring 9 is coaxially disposed with the end cover 5. A feed hole 10 is provided on the end cover 5. A swing drive 11 is provided on the frame 1 to drive the rotating shaft 6 to reciprocate.

[0054] The air-jet anti-blocking mechanism 3 includes an air source 12 and a rotating cylinder 13 with an opening on one side. The rotating cylinder 13 is rotatably mounted inside the swing ring 9. The opening side of the rotating cylinder 13 is rotatably connected to the end cover 5. The rotating cylinder 13 is coaxially mounted on the outside of multiple sets of screen cylinders 4. An adjustment mechanism 14 is provided between the rotating cylinder 13 and the frame 1 to keep the rotating cylinder 13 always vertically downward. Air jet components 15 with oblique upward air jets are symmetrically provided on both sides of the bottom wall of the rotating cylinder 13. The air source 12 is located on one side of the frame 1 and is connected to the air jet components 15.

[0055] The sieve cylinder 4 is equipped with a serpentine sliding component 16 that allows the flower tea to slide down in a serpentine path. The serpentine sliding component 16 includes a first baffle 17 and a second baffle 18. The first baffle 17 and the second baffle 18 are arranged at intervals and staggered along the axial direction of the sieve cylinder 4. The first baffle 17 and the second baffle 18 are arranged in a fan shape and are coaxial with the sieve cylinder 4.

[0056] The air source 12 sends a high-speed airflow into the jet assembly 15, which then sprays the airflow obliquely upward toward the sieve cylinder 4. The airflow flows from the bottom of the sieve cylinder 4 to the top of the sieve cylinder 4, thereby blowing away the flower tea that is blocked in the mesh of the sieve cylinder 4. The adjusting mechanism 14 keeps the rotating cylinder 13 in a vertically downward position. As the sieve cylinder 4 swings back and forth, the adjusting mechanism 14 drives the rotating cylinder 13 to rotate relative to the sieve cylinder 4 to achieve self-adjustment. The rotation of the rotating cylinder 13 relative to the sieve cylinder 4 allows the jet assembly 15 to blow airflow in opposite directions at different positions of the sieve cylinder 4, effectively preventing the sieve cylinder 4 from becoming blocked.

[0057] like Figures 5-8 As shown, the mesh size of the multiple sets of sieve cylinders 4 decreases sequentially from the inside to the outside. The feed hole 10 is connected to the innermost sieve cylinder 4. The flower tea to be screened falls into the innermost sieve cylinder 4 through the feed hole 10, and then undergoes multi-stage screening from the inside to the outside.

[0058] like Figures 1-5 As shown, the frame 1 includes a base plate 19 and an inverted U-shaped fixed frame 20. The upper wall of the base plate 19 is inclined, and the fixed frame 20 is vertically mounted on the upper wall of the base plate 19. The steering mechanism 14 includes a transverse guide rail 21 and a support rod 22 fixedly mounted on the bottom end of the rotating drum 13. The transverse guide rail 21 has follower sleeves 23 at both ends. The follower sleeves 23 are slidably mounted on the fixed frame 20. The transverse guide rail 21 slides along the height direction of the fixed frame 20 through the follower sleeves 23. The end of the support rod 22 is provided with a sliding block 24 that is slidably connected to the transverse guide rail 21.

[0059] When the rotating shaft 6 drives the end cover 5 and the screen cylinder 4 to swing, the end cover 5 drives the rotating cylinder 13 to rotate around the circumference of the rotating shaft 6. The transverse guide rail 21 restricts the rotating cylinder 13 through the sliding block 24 and the support rod 22, causing the rotating cylinder 13 to rotate relative to the screen cylinder 4, so that the rotating cylinder 13 always remains vertically downward. The horizontal movement generated by the swing of the rotating cylinder 13 drives the sliding block 24 to move horizontally along the transverse guide rail 21. The vertical movement generated by the swing of the rotating cylinder 13 drives the transverse guide rail 21 and the follower sliding sleeve 23 to slide up and down along the fixed frame 20.

[0060] Each screen cylinder 4 corresponds to a serpentine sliding assembly 16. Each screen cylinder 4 is equipped with a set of serpentine sliding assemblies 16. The structure of the first baffle 17 and the second baffle 18 is the same. The cross-section of the first baffle 17 and the cross-section of the second baffle 18 are mirror symmetrical with reference to the line connecting the axis of the rotating shaft 6 and the axis of the screen cylinder 4. The axial projection of the first baffle 17 and the axial projection of the second baffle 18 partially overlap. The overlap angle between the first baffle 17 and the second baffle 18 is slightly smaller than the swing angle of the swing screening mechanism 2.

[0061] See Figure 1 , Figure 2 , Figure 7 and Figure 10An air supply pipe 25 is provided between the air source 12 and the jet assembly 15 on both sides of the rotating drum 13. The air supply pipe 25 is symmetrically arranged on both sides of the rotating drum 13. The jet assembly 15 includes multiple sets of nozzles 26 arranged at equal intervals along the axial direction of the rotating drum 13. The airflow coverage of two adjacent sets of nozzles 26 overlaps. The nozzles 26 are arranged obliquely upward.

[0062] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 10 As shown, the air supply pipeline 25 includes an air supply hose 27 and an air supply chamber 28. The air supply chamber 28 is located on the side wall of the rotating drum 13 and is connected to the nozzle 26. The air supply hose 27 is connected between the air source 12 and the air supply chamber 28.

[0063] like Figures 1-6 As shown, a discharge mechanism 33 is fixedly connected to the rear end of the rotating drum 13. The discharge mechanism 33 includes multiple sets of discharge cylinders 34 nested coaxially from the inside to the outside. Each discharge cylinder 34 has an opening on one side and corresponds one-to-one with the screen cylinder 4. The opening side of the discharge cylinder 34 is coaxially connected to the tail end of the screen cylinder 4. The outermost discharge cylinder 34 penetrates the side wall of the rotating drum 13 and is coaxially fixedly connected to the outermost screen cylinder 4. The lengths of the multiple sets of discharge cylinders 34 are sequentially arranged from the outside to the inside. The inner discharge cylinder 34 extends through the tail end of the adjacent outer discharge cylinder 34 and extends out of the adjacent outer discharge cylinder 34. The bottom wall of the tail end of the discharge cylinder 34 is provided with a discharge port 35. The tail end of the frame 1 is provided with multiple sets of receiving boxes 36. The upper wall of the receiving box 36 is provided with a discharge port 55. A flexible discharge pipe 37 is provided between the discharge port 55 and the discharge port 35. The discharge cylinder 34, the discharge port 35, the flexible discharge pipe 37 and the receiving box 36 correspond one-to-one.

[0064] like Figure 1 and Figure 2 As shown, the air source 12 includes an air compressor 38 and an air storage tank 39. The air storage tank 39 is located on one side of the frame 1, and the air compressor 38 is located above the air storage tank 39. The air compressor 38 is connected to the air storage tank 39.

[0065] like Figure 2 and Figure 7 As shown, the arc length of the rotating cylinder 13 between the two symmetrical sets of jet components 15 is greater than one-quarter of the circumference of the rotating cylinder 13 and less than one-half of the circumference of the rotating cylinder 13. This ensures that when the rotating cylinder 13 rotates around the sieve cylinder 4 under the action of the adjusting mechanism 14, the jet component 15 can blow airflow onto the lower half of the sieve cylinder 4, and the flower tea will not cover the jet component 15.

[0066] like Figures 1-4 and Figure 11As shown, the swing drive 11 includes a swing arm 40 and a reciprocating assembly 41. One end of the swing arm 40 is fixedly connected to the rotating shaft 6. The swing arm 40 is provided with a push-pull slide groove 42. The reciprocating assembly 41 is mounted on the frame 1. The output end of the reciprocating assembly 41 is provided with a reciprocating slider 43. The side wall of the reciprocating slider 43 is provided with a sliding shaft 44. The sliding shaft 44 is slidably engaged in the push-pull slide groove 42. The reciprocating assembly 41 drives the reciprocating slider 43 and the sliding shaft 44 to slide back and forth. The reciprocating slider 43 drives the swing arm 40 to swing back and forth through the sliding shaft 44 and the push-pull slide groove 42.

[0067] The reciprocating assembly 41 includes a reciprocating slide 45, a bidirectional lead screw 46, a nut slider 47, and a drive motor 48. The reciprocating slide 45 is mounted on the frame 1. The bidirectional lead screw 46 is rotatably mounted within the reciprocating slide 45. The drive motor 48 is mounted on the side wall of the frame 1, and its output end is connected to the bidirectional lead screw 46. The nut slider 47 is slidably mounted within the reciprocating slide 45 and is screw-connected to the bidirectional lead screw 46. The reciprocating slider 43 is mounted on the side wall of the nut slider 47 and slides along the reciprocating slide 45.

[0068] like Figure 1 and Figure 5 As shown, the front end of the frame 1 is provided with a feeding mechanism, which includes a storage hopper 49 and a feeding hose 50. The storage hopper 49 is fixedly installed at the front end of the frame 1, and the feeding hose 50 is connected between the storage hopper 49 and the feed hole 10. The storage hopper 49 is provided with a vibration motor 51, which assists in feeding by vibration.

[0069] like Figures 5-10 As shown, the bottom end of the rotating drum 13 is provided with a ash discharge hole 52, and a vertically connected ash discharge hopper 53 is connected to the ash discharge hole 52. The ash discharge hopper 53 facilitates the discharge of dust and debris from the rotating drum 13. The bottom end of the ash discharge hopper 53 is bolted to a dust collection chamber 54. The outermost screen cylinder 4 screens out tea residue and dust particles into the rotating drum 13, and collects them into the dust collection chamber 54 through the ash discharge hole 52 and the ash discharge hopper 53. The dust collection chamber 54 can be removed to clean the impurities in the ash discharge hopper 53 and the rotating drum 13.

[0070] In practical use, the flower tea to be screened is poured into the storage hopper 49, then the device is powered on, and the vibration motor 51, swing drive 11, and air source 12 are started. The vibration motor 51 drives the storage hopper 49 to vibrate. With the help of vibration, the flower tea in the storage hopper 49 slides down the feeding hose 50 through the feed hole 10 into the innermost screen cylinder 4. Then, it undergoes multi-stage screening from the inside to the outside through multiple sets of screen cylinders 4. When the flower tea slides down the screen cylinder 4, it is first blocked by the foremost baffle 17. As the swing drive 11 is started, the drive motor 48 drives the bidirectional lead screw 46 to rotate. 6 drives the nut slider 47 to slide back and forth along the reciprocating slide groove 45. The nut slider 47 drives the reciprocating slider 43 to slide back and forth along the reciprocating slide groove 45. The reciprocating slider 43 drives the swing rod 40 to swing back and forth through the sliding shaft 44 and the push-pull slide groove 42. The swing rod 40 drives the end cover 5 and the swing ring 9 to swing back and forth around the rotating shaft 6 through the swing seat 7 and the swing seat 8. This causes the rotating cylinder 13 and the sieve cylinder 4 to swing back and forth around the rotating shaft 6. When the sieve cylinder 4 swings, it causes the flower tea to tumble inside the sieve cylinder 4 and continuously fall to the lowest point of the sieve cylinder 4. The lowest point of the sieve cylinder 4 changes continuously during the swing process. (See reference...) Figure 9When the sieve cylinder 4 swings to its highest point on one side, baffle 17 rotates away from the lowest point of the sieve cylinder 4. The flower tea rolls down along baffle 17 and baffle 2 18 to the lowest point of the sieve cylinder 4. The flower tea that was previously blocked by baffle 17 can slide backward along the inclined bottom wall of the sieve cylinder 4 to baffle 2 18 behind baffle 17. At this time, baffle 2 18 is located at the lowest point of the sieve cylinder 4, blocking the flower tea. When the sieve cylinder 4 swings to its lowest point, both baffle 17 and baffle 2 18 are located at the lowest point of the sieve cylinder 4, and the flower tea cannot slide backward. When the sieve cylinder 4 swings to its highest point on the other side, baffle 17 rotates to the lowest point of the sieve cylinder 4, and baffle 2 18 rotates away from the lowest point of the sieve cylinder 4, and the flower tea... The tea rolls down along baffle 17 and baffle 28 to the lowest point of the sieve cylinder 4. Previously blocked by baffle 28, the tea can now slide backward along the inclined bottom wall of the sieve cylinder 4 to baffle 17 behind baffle 28. Baffle 17 and baffle 28 alternately block the sliding tea. With the reciprocating oscillation of the sieve cylinder 4, the tea alternately slides down the sides of baffle 17 and baffle 28. The combination of baffle 17 and baffle 28 and the reciprocating oscillation of the sieve cylinder 4 causes the tea to slide down in a serpentine path within the sieve cylinder 4, effectively extending the time the tea spends sliding down the sieve cylinder 4, thus extending the sieving time and ensuring thorough sieving. The flower tea slides down the sieve cylinder 4 into the corresponding discharge cylinder 34, and then down through the discharge port 55 and flexible discharge pipe 37 into the corresponding receiving box 36 for storage. When the sieve cylinder 4 swings around the rotating shaft 6, the transverse guide rail 21 restricts the rotating cylinder 13 through the sliding block 24 and the support rod 22, causing the rotating cylinder 13 to rotate relative to the sieve cylinder 4, so that the rotating cylinder 13 always remains vertically downward. The horizontal movement generated by the swing of the rotating cylinder 13 causes the sliding block 24 to move horizontally along the transverse guide rail 21, and the vertical movement generated by the swing of the rotating cylinder 13 causes the transverse guide rail 21 and the follower sliding sleeve 23 to slide up and down along the fixed frame 20. At the same time, the air source 12 delivers air to the air delivery chamber 2 through the air delivery hose 27. Airflow is introduced into the sieve cylinder 8 and ejected through the upward-sloping nozzle 26. The airflow is ejected upward-slopingly from the bottom of the sieve cylinder 4, thereby blowing away the flower tea stuck in the mesh of the sieve cylinder 4. At the same time, the rotating sieve cylinder 4 will also cause the flower tea with lighter blockages in the mesh of the sieve cylinder 4 to fall off under the action of gravity. The adjusting mechanism 14 keeps the rotating cylinder 13 in a vertical downward state. Thus, when the sieve cylinder 4 swings back and forth, the adjusting mechanism 14 drives the rotating cylinder 13 to rotate relative to the sieve cylinder 4 to achieve self-adjustment. The rotation of the rotating cylinder 13 relative to the sieve cylinder 4 allows the nozzle 26 to blow airflow in opposite directions at different positions of the sieve cylinder 4, effectively preventing the sieve cylinder 4 from clogging and achieving the technical effect of cleaning while rotating.

[0071] Example 2 differs from Example 1 in that, as follows: Figures 1-11As shown, a dual-path gas switching assembly 29 is provided between the gas supply pipeline 25 and the gas source 12. The dual-path gas switching assembly 29 adopts a two-position three-way solenoid valve with one inlet and two outlets. The two-position three-way solenoid valve has one inlet end and two outlet ends. When the solenoid valve coil is energized, the first outlet end opens and the second outlet end closes. When the solenoid valve coil is de-energized, the first outlet end closes and the second outlet end opens. A gas delivery hose 30 is provided between the inlet end of the two-position three-way solenoid valve and the gas source 12. The gas storage tank 39 is connected to the gas delivery hose 30. The two outlet ends of the two-position three-way solenoid valve are respectively connected to two gas supply hoses 27. The two-position three-way solenoid valve controls the gas to switch between the two gas supply pipelines 25, so that the gas is sprayed out from different sides of the rotating drum 13 and blows the screen cylinder 4 in opposite directions.

[0072] like Figures 1-3 As shown, the frame 1 is equipped with a controller 31, and the middle of the transverse guide rail 21 is equipped with an obstruction sensor 32. The controller 31 is electrically connected to the obstruction sensor 32 and the two-position three-way solenoid valve. In this embodiment, the obstruction sensor 32 is an E18-D80NK infrared sensor. The E18-D80NK infrared sensor is a photoelectric sensor that integrates transmission and reception. The emitted light is modulated by the transmitter head and then emitted. The receiver head demodulates the reflected light and outputs it. The controller 31 is a 51 microcontroller.

[0073] When the sliding block 24 slides past the middle of the transverse guide rail 21, it triggers the blocking sensor 32 to generate an electrical signal, which is sent to the controller 31. The controller 31 controls the two-position three-way solenoid valve to switch directions. Each time the blocking sensor 32 is triggered, the controller 31 controls the two-position three-way solenoid valve to switch directions. The two-position three-way solenoid valve controls the gas to switch between the two gas supply lines 25, so that the gas is sprayed out from different sides of the rotating drum 13, blowing the screen cylinder 4 in opposite directions. In this embodiment, the screen cylinder 4 is on the rotating shaft 6 When the screen is on the left side, the controller 31 controls the nozzle 26 on the right side of the rotating drum 13 to connect with the air source 12 to spray air and clean the right side of the screen 4. When the screen 4 is on the right side of the rotating shaft 6, the controller 31 controls the nozzle 26 on the left side of the rotating drum 13 to connect with the air source 12 to spray air and clean the mesh on the left side of the screen 4. With the reciprocating swing of the screen 4 and the airflow from the nozzle 26, the tea stuck in the mesh of the screen 4 can be effectively cleaned, effectively preventing the screen 4 from becoming clogged, and avoiding airflow interference caused by spraying air from both sides at the same time.

[0074] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0075] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An automatic screening device for flower tea production, characterized in that: It includes a frame (1), a swing screening mechanism (2) and an air-jet anti-blocking mechanism (3). The swing screening mechanism (2) is tilted and rotated inside the frame (1), and the air-jet anti-blocking mechanism (3) is coaxially rotated and sleeved on the outside of the swing screening mechanism (2). The swing screening mechanism (2) includes multiple sets of screen cylinders (4) nested coaxially from the inside to the outside and an end cover (5) fixed on one side of the screen cylinder (4). A rotating shaft (6) is rotatably mounted on the frame (1). A swing seat one (7) and a swing seat two (8) are fixedly mounted on the rotating shaft (6) along the axial direction. The swing seat one (7) is fixedly connected to the end cover (5). A swing ring (9) is fixedly connected to the swing seat two (8). The swing ring (9) is coaxially mounted with the end cover (5). A feed hole (10) is provided on the end cover (5). A swing drive (11) is provided on the frame (1) to drive the rotating shaft (6) to reciprocate. The air-pumping anti-blocking mechanism (3) includes an air source (12) and a rotating cylinder (13) with an opening on one side. The rotating cylinder (13) is rotatably disposed inside the swing ring (9). The opening side of the rotating cylinder (13) is rotatably connected to the end cover (5). The rotating cylinder (13) is coaxially rotated and sleeved on the outside of multiple sets of screen cylinders (4). A direction adjustment mechanism (14) is provided between the rotating cylinder (13) and the frame (1) to keep the rotating cylinder (13) vertically downward. Air jet components (15) that spray upwards are symmetrically provided on both sides of the bottom wall of the rotating cylinder (13). The air source (12) is located on one side of the frame (1) and is connected to the air jet components (15). The sieve cylinder (4) is provided with a serpentine sliding assembly (16), which includes a first baffle (17) and a second baffle (18). The first baffle (17) and the second baffle (18) are arranged at intervals and staggered along the axial direction of the sieve cylinder (4). The first baffle (17) and the second baffle (18) are arranged in a fan shape and are coaxial with the sieve cylinder (4).

2. The automatic screening equipment for flower tea production according to claim 1, characterized in that: The screen cylinder (4) corresponds one-to-one with the serpentine sliding assembly (16). The structure of the first baffle (17) and the second baffle (18) is the same. The cross-section of the first baffle (17) and the cross-section of the second baffle (18) are mirror symmetrical with reference to the line connecting the axis of the rotating shaft (6) and the axis of the screen cylinder (4). The axial projection of the first baffle (17) and the axial projection of the second baffle (18) partially overlap. The overlap angle between the first baffle (17) and the second baffle (18) is smaller than the swing angle of the swing screening mechanism (2).

3. The automatic screening equipment for flower tea production according to claim 2, characterized in that: The frame (1) includes a base plate (19) and a U-shaped fixed frame (20). The upper wall of the base plate (19) is inclined, and the fixed frame (20) is located on the upper wall of the base plate (19). The steering mechanism (14) includes a transverse guide rail (21) and a support rod (22) fixed at the bottom of the rotating drum (13). The transverse guide rail (21) has follower sleeves (23) at both ends. The follower sleeves (23) are slidably fitted on the fixed frame (20). The transverse guide rail (21) slides along the height direction of the fixed frame (20) through the follower sleeves (23). The support rod (22) is L-shaped, and the end of the support rod (22) is provided with a sliding block (24) that is slidably connected to the transverse guide rail (21).

4. The automatic screening equipment for flower tea production according to claim 3, characterized in that: The air source (12) and the jet assembly (15) on both sides of the rotating drum (13) are respectively connected by an air supply pipe (25). The air supply pipe (25) is symmetrically arranged on both sides of the rotating drum (13). The jet assembly (15) includes multiple sets of nozzles (26) arranged equidistantly along the axis of the rotating drum (13). The airflow coverage of two adjacent sets of nozzles (26) overlaps. The nozzles (26) are arranged obliquely upward.

5. An automatic screening device for flower tea production according to claim 4, characterized in that: A dual-path gas switching assembly (29) is provided between the gas supply pipeline (25) and the gas source (12). The dual-path gas switching assembly (29) adopts a two-position three-way solenoid valve. The two-position three-way solenoid valve has one inlet end and two outlet ends. The inlet end of the two-position three-way solenoid valve is connected to the gas source (12) and a gas delivery hose (30) is provided. The two outlet ends of the two-position three-way solenoid valve are respectively connected to two sets of gas supply pipelines (25). A controller (31) is provided on the frame (1). An obstruction sensor (32) is provided in the middle of the transverse guide rail (21). The controller (31) is electrically connected to the obstruction sensor (32) and the two-position three-way solenoid valve.

6. The automatic screening equipment for flower tea production according to claim 5, characterized in that: The rear end of the rotating drum (13) is fixedly connected to a discharge mechanism (33). The discharge mechanism (33) includes multiple sets of discharge cylinders (34) nested coaxially from the inside to the outside. There is a uniform annular gap between adjacent discharge cylinders (34). Each discharge cylinder (34) is open on one side. Each discharge cylinder (34) corresponds to a screen cylinder (4). The open side of the discharge cylinder (34) is coaxially connected to the tail end of the screen cylinder (4). The outermost discharge cylinder (34) passes through the side wall of the rotating drum (13) and is coaxially fixedly connected to the outermost screen cylinder (4). The length of the multiple sets of discharge cylinders (34) is... The inner discharge cylinder (34) increases sequentially from the outside to the inside. The tail end of the inner discharge cylinder (34) passes through the tail end of the adjacent outer discharge cylinder (34) and extends out of the adjacent outer discharge cylinder (34). The bottom wall of the tail end of the discharge cylinder (34) is provided with a discharge port (35). The tail end of the frame (1) is provided with multiple sets of receiving boxes (36). The upper wall of the receiving box (36) is provided with a discharge port (55). A flexible discharge pipe (37) is provided between the discharge port (55) and the discharge port (35). The discharge cylinder (34), discharge port (35), flexible discharge pipe (37) and receiving box (36) correspond one-to-one.

7. An automatic screening device for flower tea production according to claim 6, characterized in that: The mesh size of the multiple sets of screen cylinders (4) decreases from the inside to the outside. The feed hole (10) is connected to the innermost screen cylinder (4). The arc length of the rotating cylinder (13) between the two sets of symmetrical jet components (15) is greater than the circumference of one-quarter rotating cylinder (13) and less than the circumference of half rotating cylinder (13).

8. The automatic screening equipment for flower tea production according to claim 7, characterized in that: The air supply pipeline (25) includes an air supply hose (27) and an air supply chamber (28). The air supply chamber (28) is located on the side wall of the rotating drum (13) and is connected to the nozzle (26). The air supply hose (27) is connected between the air source (12) and the air supply chamber (28).

9. An automatic screening device for flower tea production according to claim 8, characterized in that: The bottom end of the rotating drum (13) is provided with a ash discharge through hole (52), and a vertically connected ash discharge hopper (53) is connected to the ash discharge through hole (52). The bottom end of the ash discharge hopper (53) is equipped with an ash collection chamber (54).

10. An automatic screening device for flower tea production according to claim 9, characterized in that: The swing drive (11) includes a swing arm (40) and a reciprocating assembly (41). One end of the swing arm (40) is fixedly connected to the rotating shaft (6). The swing arm (40) is provided with a push-pull slide groove (42). The reciprocating assembly (41) is mounted on the frame (1). The output end of the reciprocating assembly (41) is provided with a reciprocating slider (43). The side wall of the reciprocating slider (43) is provided with a sliding shaft (44). The sliding shaft (44) is slidably locked in the push-pull slide groove (42). The front end of the frame (1) is provided with a feeding mechanism. The feeding mechanism includes a storage hopper (49) and a feeding hose (50). The storage hopper (49) is fixedly mounted on the front end of the frame (1). The feeding hose (50) is connected between the storage hopper (49) and the feed hole (10). The storage hopper (49) is provided with a vibration motor (51).

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