Automatic screening equipment for scented tea production

Abstract

The invention discloses automatic screening equipment for scented tea production, and belongs to the technical field of scented tea production and processing, the automatic screening equipment comprises a rack, a swing type screening mechanism and an air-blast anti-blocking mechanism, the swing type screening mechanism is obliquely and rotatably arranged in the rack, and the air-blast anti-blocking mechanism coaxially and rotatably sleeves the outer side of the swing type screening mechanism. According to the automatic screening equipment for scented tea production, the sliding speed of scented tea is effectively controlled, screening thoroughness is improved, meanwhile, meshes are prevented from being blocked, and the actual requirement of the scented tea processing industry for high-quality production is met.

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: 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.

[0004] 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. 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.

[0005] 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

[0006] 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.

[0007] 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 in the rack. The gas flushing anti-blocking mechanism is coaxially rotatable and sleeved outside the swing type screening mechanism. 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 provided between adjacent screen cylinders. 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 the axial direction. The swing seat one is fixedly connected with the end cover. A swing ring is fixedly connected to the swing seat two. The swing ring is coaxially arranged with the end cover. An inlet hole is arranged on the end cover. A swing drive is arranged on the rack to drive the rotating shaft to reciprocate. The air flushing anti-blocking mechanism comprises an air source and a rotating drum provided with an opening on one side, the rotating drum is rotatably arranged in a swing ring, the opening side of the rotating drum is rotatably connected with an end cover, the rotating drum is coaxially and rotatably sleeved outside a plurality of screen drums, a direction adjusting mechanism is arranged between the rotating drum and the frame to keep the rotating drum always vertically downward, a gas jet assembly for obliquely upwardly jetting gas is symmetrically arranged on both sides of the bottom wall of the rotating drum, the air source is arranged on one side of the frame and is communicated with the gas jet assembly. The screen drum is internally provided with a snake-shaped downward sliding assembly for making the scented tea slide along a snake-shaped line, the snake-shaped downward sliding assembly comprises a baffle one and a baffle two, the baffle one and the baffle two are arranged in a spaced and staggered manner along the axial direction of the screen drum and are arranged in a fan shape, and the baffle one and the baffle two are coaxial with the screen drum.

[0008] The air source sends a high-speed airflow to the gas jet assembly, and the airflow is obliquely upwardly jetted to the screen drum through the gas jet assembly, the airflow flows from the downward direction of the screen drum to the upward direction of the screen drum, thereby blowing away the blocked scented tea in the screen drum mesh, the direction adjusting mechanism keeps the rotating drum always vertically downward, thereby realizing self-adjustment of the rotating drum relative to the screen drum when the screen drum reciprocating swings, and the rotating drum relative to the screen drum can make the gas jet assembly reversely blow the airflow to different positions of the screen drum, thereby effectively preventing the screen drum from being blocked.

[0009] Preferably, the screen drum corresponds to the snake-shaped downward sliding assembly one by one, and each screen drum is respectively provided with a group of snake-shaped downward sliding assemblies, the baffle one and the baffle two are the same in structure, the cross section of the baffle one is mirror-symmetrical to the cross section of the baffle two with the reference line being the line connecting the shaft center and the screen drum center, the axial projection of the baffle one partially overlaps the axial projection of the baffle two, and the overlapping angle of the baffle one and the baffle two is slightly smaller than the swing angle of the swing type screening mechanism.

[0010] The frame comprises a bottom plate and a fixed frame arranged in an inverted U shape, the upper wall of the bottom plate is arranged in an inclined manner, and the fixed frame is vertically arranged on the upper wall of the bottom plate, the direction adjusting mechanism comprises a transverse guide rail and a support rod fixedly arranged at the bottom end of the rotating drum, the transverse guide rail is provided with a follow-up sliding sleeve at both ends, the follow-up sliding sleeve is slidably sleeved on the fixed frame, and the transverse guide rail slides along the height direction of the fixed frame through the follow-up sliding sleeve, the support rod is arranged in an L shape, and the end portion of the support rod is provided with a sliding clamping block in sliding connection with the transverse guide rail.

[0011] Preferably, a gas conveying pipeline is respectively arranged in communication between the air source and the gas jet assemblies on both sides of the rotating drum, the gas conveying pipelines are symmetrically arranged on both sides of the rotating drum, the gas jet assembly comprises a plurality of nozzles arranged at equal intervals along the axial direction of the rotating drum, the airflow coverage ranges of adjacent two groups of nozzles overlap, and the nozzles are arranged obliquely upwardly.

[0012] When the rotating shaft drives the end cover and the screen cylinder to swing, the end cover drives the rotating cylinder to rotate around the circumference of the rotating shaft, the horizontal guide rail limits the rotating cylinder through the sliding block and the supporting rod, and drives the rotating cylinder to rotate relative to the screen cylinder, so that the rotating cylinder always remains vertical downward, the horizontal movement of the rotating cylinder caused by the swing drives the sliding block to move horizontally along the horizontal guide rail, and the vertical movement of the rotating cylinder caused by the swing drives the horizontal guide rail and the follower sliding sleeve to slide up and down along the fixed frame.

[0013] Further, a gas double-path switching assembly is arranged between the gas supply pipeline and the gas source, the gas double-path switching assembly adopts a two-position three-way electromagnetic valve with one gas inlet end and two gas outlet ends, when the electromagnetic valve coil is powered on, the first gas outlet end is opened and the second gas outlet end is closed; when the electromagnetic valve coil is powered off, the first gas outlet end is closed and the second gas outlet end is opened; a gas conveying hose is arranged in communication between the gas inlet end of the two-position three-way electromagnetic valve and the gas source, the two gas outlet ends of the two-position three-way electromagnetic valve are respectively in communication with two gas supply pipelines, and the two-position three-way electromagnetic valve controls the switching of the gas between the two gas supply pipelines, so that the gas is sprayed out from different sides of the rotating cylinder to blow the screen cylinder in different directions.

[0014] Preferably, a controller is arranged on the frame, a shielding sensor is arranged at the middle part of the horizontal guide rail, and the controller is electrically connected with the shielding sensor and the two-position three-way electromagnetic valve.

[0015] When the sliding block slides through the middle part of the horizontal guide rail, the shielding sensor is triggered to generate an electrical signal and send it to the controller, and the controller controls the two-position three-way electromagnetic valve to reverse, and the shielding sensor is triggered once, and the controller controls the two-position three-way electromagnetic valve to reverse once.

[0016] Preferably, a discharging mechanism is fixedly connected to the rear end of the rotating cylinder, the discharging mechanism includes multiple groups of discharging cylinders coaxially nested from the inside to the outside, uniform annular gaps are arranged between adjacent discharging cylinders, the discharging cylinders are provided with an opening on one side, the discharging cylinders are in one-to-one correspondence with the screen cylinders, the opening side of the discharging cylinder is coaxially communicated with the tail end of the screen cylinder, the outermost discharging cylinder is coaxially fixedly connected with the outermost screen cylinder through the penetration of the side wall of the rotating cylinder, the lengths of the multiple groups of discharging cylinders gradually increase from the outside to the inside, the tail end of the inner discharging cylinder penetrates the tail end of the adjacent outer discharging cylinder and extends out of the adjacent outer discharging cylinder, a discharging port is arranged on the tail end bottom wall of the discharging cylinder, multiple groups of material receiving boxes are arranged at the tail end of the frame, a discharging port is arranged on the upper wall of the material receiving box, a flexible discharging pipe is arranged in communication between the discharging port and the discharging port, and the discharging cylinder, the discharging port, the flexible discharging pipe and the material receiving box are in one-to-one correspondence.

[0017] Preferably, the mesh hole diameters of the multiple groups of screen cylinders gradually decrease from the inside to the outside, the feeding hole is in communication with the innermost screen cylinder, and the flower tea to be screened falls into the innermost screen cylinder through the feeding hole and then is subjected to multi-stage screening from the inside to the outside.

[0018] Preferably, the arc length of the drum between the two symmetrical groups of jet assemblies is greater than one fourth of the circumference of the drum and less than one half of the circumference of the drum, so that when the drum rotates under the action of the steering mechanism, the jet assemblies can blow air onto the lower half of the drum, and the scented tea does not cover the jet assemblies.

[0019] Preferably, the air supply pipeline comprises an air supply hose and an air supply cavity, the air supply cavity is arranged on the side wall of the drum, the air supply cavity is in communication with the nozzle, and the air supply hose is in communication between the air source and the air supply cavity.

[0020] Preferably, the air source comprises an air compressor and an air tank, the air tank is arranged on one side of the rack, the air compressor is arranged above the air tank, the air compressor is in communication with the air tank, and the air tank is in communication with the air supply hose.

[0021] Preferably, the bottom end of the drum is provided with an ash discharge through hole, an ash discharge hopper penetrating up and down is connected at the ash discharge through hole, the ash discharge hopper facilitates the discharge of dust and slag in the drum, and a dust collecting cavity is mounted at the bottom end of the ash discharge hopper.

[0022] Further, the swing drive comprises a swing rod and a reciprocating assembly, one end of the swing rod is fixedly connected with the rotating shaft, a push-pull sliding groove is arranged on the swing rod, the reciprocating assembly is arranged on the rack, a reciprocating sliding block is arranged at the output end of the reciprocating assembly, a sliding shaft is arranged on the side wall of the reciprocating sliding block, the sliding shaft is slidingly arranged in the push-pull sliding groove, the reciprocating assembly drives the reciprocating sliding block and the sliding shaft to reciprocate, and the reciprocating sliding block drives the swing rod to reciprocate through the sliding shaft and the push-pull sliding groove.

[0023] More specifically, the reciprocating assembly comprises a reciprocating sliding groove, a bidirectional screw rod, a nut sliding block and a driving motor, the reciprocating sliding groove is arranged on the rack, the bidirectional screw rod is rotatably arranged in the reciprocating sliding groove, the driving motor is arranged on the side wall of the rack, the output end of the driving motor is connected with the bidirectional screw rod, the nut sliding block is slidingly arranged in the reciprocating sliding groove, the nut sliding block is connected with the screw rod of the bidirectional screw rod, and the reciprocating sliding block is arranged on the side wall of the nut sliding block and is slidingly arranged along the reciprocating sliding groove.

[0024] The driving motor drives the bidirectional screw rod to rotate, the bidirectional screw rod drives the nut sliding block to reciprocate along the reciprocating sliding groove, and the nut sliding block drives the reciprocating sliding block to slide along the reciprocating sliding groove.

[0025] Preferably, the front end of the rack is provided with a discharging mechanism, the discharging mechanism comprises a storage hopper and a discharging hose, the storage hopper is fixedly arranged at the front end of the rack, the discharging hose is in communication between the storage hopper and the feeding hole, and a vibrating motor is arranged on the storage hopper to assist discharging through vibration.

[0026] The present application has the following beneficial effects by adopting the above structure: 1. By arranging the baffle plate 1 and the baffle plate 2 in the serpentine slide assembly in front and back staggered arrangement, cooperating with the reciprocating swing screen cylinder, the scented tea is forced to slide in a serpentine path, prolonging the residence time of the scented tea in the screen cylinder, ensuring sufficient screening, and avoiding the problem of incomplete screening caused by too fast sliding.

[0027] 2. The swing screen cylinder can drive the scented tea to roll in the screen cylinder, so that the scented tea contacts different parts of the screen cylinder, improving the screening efficiency.

[0028] 3. The air flushing anti-blocking mechanism is adopted, high-pressure airflow is injected obliquely upward from below the screen cylinder, and the airflow is used to push out the blockage from the screen cylinder mesh, the cleaning effect is good, the technical effect of cleaning while screening can be realized, the blockage is effectively prevented, and frequent shutdown for cleaning is not required.

[0029] 4. The rotary drum is rotationally connected with the screen cylinder, and the rotary drum always maintains vertical by cooperating with the direction adjusting mechanism, so that the rotary drum rotates relative to the screen cylinder, so that the air injection assembly blows and cleans different parts of the screen cylinder.

[0030] 5. The multi-layer coaxial screen cylinder design realizes multi-stage screening, adapts to the grading needs of scented tea of different particle sizes, the discharge mechanism corresponds to the screen cylinder one by one, and the grading collection avoids mixed pollution.

[0031] 6. The ash discharge hopper and the ash collecting cavity are arranged, dust and slag are collected, the inside of the equipment is kept clean, and cleaning is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A structure schematic view of an automatic screening equipment for scented tea production is provided for the present application. Figure 2 A structure schematic view of another view of an automatic screening equipment for scented tea production is provided for the present application. Figure 3 A combined structure schematic view of a rack, a swing drive and a receiving box is provided for the present application. Figure 4 A combined structure schematic view of a rack, a swing screening mechanism, a direction adjusting mechanism, a rotary drum, a discharge mechanism and a gas supply pipeline is provided for the present application. Figure 5 A combined structure schematic view of a swing screening mechanism, a rotary drum, a discharge mechanism and a gas supply pipeline is provided for the present application. Figure 6 A cross-sectional view of a swing screening mechanism, a rotary drum, a discharge mechanism and a gas supply pipeline is provided for the present application. Figure 7 A cross-sectional view of a rotary drum, a screen cylinder and an air injection assembly is provided for the present application. Figure 8 A structure schematic view of a swing screening mechanism is provided for the present application. Figure 9The state change schematic view of the swing screening mechanism provided by the present application is shown in the figure. Figure 10 The structure schematic view of the rotating drum provided by the present application is shown in the figure. Figure 11 The sectional view of the reciprocating assembly provided by the present application is shown in the figure.

[0033] In the figure, 1 is a rack, 2 is a swing screening mechanism, 3 is a gas flushing anti-blocking mechanism, 4 is a screening drum, 5 is an end cover, 6 is a rotating shaft, 7 is a swing seat one, 8 is a swing seat two, 9 is a swing ring, 10 is a feeding hole, 11 is a swing drive, 12 is a gas source, 13 is a rotating drum, 14 is a direction adjusting mechanism, 15 is a gas jetting assembly, 16 is a serpentine downward sliding assembly, 17 is a baffle one, 18 is a baffle two, 19 is a bottom plate, 20 is a fixing frame, 21 is a transverse guide rail, 22 is a supporting rod, 23 is a follow-up sliding sleeve, 24 is a sliding clamping block, 25 is a gas conveying pipeline, 26 is a nozzle, 27 is a gas conveying hose, 28 is a gas conveying cavity, 29 is a gas double-path switching assembly, 30 is a gas conveying hose, 31 is a controller, 32 is a shielding sensor, 33 is a discharging mechanism, 34 is a discharging drum, 35 is a discharging port, 36 is a material receiving box, 37 is a flexible discharging pipe, 38 is an air compressor, 39 is a gas storage tank, 40 is a swing rod, 41 is a reciprocating assembly, 42 is a push-pull sliding groove, 43 is a reciprocating sliding block, 44 is a sliding shaft, 45 is a reciprocating sliding groove, 46 is a bidirectional screw rod, 47 is a nut sliding block, 48 is a driving motor, 49 is a material storage hopper, 50 is a discharging hose, 51 is a vibrating motor, 52 is an ash discharging through hole, 53 is an ash discharging hopper, 54 is an ash collecting cavity, and 55 is a discharging port.

[0034] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] Embodiment one, as shown in Figures 1-11 The application provides an automatic screening equipment for scented tea production, which comprises a rack 1, a swing screening mechanism 2 and a gas flushing anti-blocking mechanism 3. The swing screening mechanism 2 is arranged in the rack 1 in an inclined and rotating manner, and the gas flushing anti-blocking mechanism 3 is coaxially arranged outside the swing screening mechanism 2. The swing screening mechanism 2 comprises a plurality of groups of screening cylinders 4 arranged in a coaxial and nested manner from inside to outside and end covers 5 fixed to one side of the screening cylinders 4. Adjacent screening cylinders 4 are kept in uniform annular gaps, and the plurality of groups of screening cylinders 4 are fixedly arranged on the side wall of the end cover 5. A rotating shaft 6 is arranged on the rack 1 in a rotating manner. The rotating shaft 6 is fixedly provided with a swing seat one 7 and a swing seat two 8 in sequence in an axial direction. The swing seat one 7 is fixedly connected with the end cover 5. The swing seat two 8 is fixedly connected with a swing ring 9, which is coaxially arranged with the end cover 5. The end cover 5 is provided with a feeding hole 10. The rack 1 is provided with a swing drive 11 for driving the rotating shaft 6 to rotate back and forth. The gas flushing anti-blocking mechanism 3 comprises a gas source 12 and a rotating cylinder 13 provided with an opening on one side. The rotating cylinder 13 is arranged in the swing ring 9 in a rotating manner. The opening side of the rotating cylinder 13 is connected with the end cover 5 in a rotating manner. The rotating cylinder 13 is coaxially arranged outside the plurality of groups of screening cylinders 4. A direction adjusting mechanism 14 is arranged between the rotating cylinder 13 and the rack 1 to keep the rotating cylinder 13 always in a vertical downward state. The rotating cylinder 13 is provided with gas jet assemblies 15 arranged symmetrically on both sides of the bottom wall in an upward and oblique manner. The gas source 12 is arranged on one side of the rack 1 and is communicated with the gas jet assemblies 15. The screening cylinder 4 is provided with a snake-shaped downward sliding assembly 16 for making the scented tea slide in a snake-shaped line. The snake-shaped downward sliding assembly 16 comprises baffle plates one 17 and two 18. The baffle plates one 17 and two 18 are arranged in a spaced and staggered manner along the axial direction of the screening cylinder 4. The baffle plates one 17 and two 18 are arranged in a fan shape and are coaxial with the screening cylinder 4.

[0038] The gas source 12 sends high-speed airflow to the gas jet assemblies 15, which are arranged in an upward and oblique manner to the direction of the screening cylinder 4. The airflow flows from the lower part to the upper part of the screening cylinder 4, so as to blow away the scented tea blocked in the mesh of the screening cylinder 4. The direction adjusting mechanism 14 keeps the rotating cylinder 13 always in a vertical downward state. When the screening cylinder 4 rotates back and forth, the direction adjusting mechanism 14 drives the rotating cylinder 13 to rotate relative to the screening cylinder 4 to realize self-adjustment. The rotating of the rotating cylinder 13 relative to the screening cylinder 4 can make the gas jet assemblies 15 blow the airflow in a reverse direction to different positions of the screening cylinder 4, so as to effectively prevent the screening cylinder 4 from being blocked.

[0039] As shown in Figures 5-8 The mesh apertures of the plurality of groups of screening cylinders 4 are sequentially reduced from inside to outside. The feeding hole 10 is communicated with the innermost screening cylinder 4. The scented tea to be screened falls into the innermost screening cylinder 4 through the feeding hole 10 and is then subjected to multi-stage screening from inside to outside.

[0040] AsFigures 1-5 As shown, the frame 1 comprises a bottom plate 19 and a fixed frame 20 arranged in inverted U shape, the upper wall of the bottom plate 19 is arranged in inclined manner, the fixed frame 20 is vertically arranged on the upper wall of the bottom plate 19, the direction adjusting mechanism 14 comprises a transverse guide rail 21 and a support rod 22 fixedly arranged on the bottom end of the rotating drum 13, the transverse guide rail 21 is provided with a follow-up sliding sleeve 23 at both ends, the follow-up sliding sleeve 23 is slidingly sleeved on the fixed frame 20, the transverse guide rail 21 slides along the height direction of the fixed frame 20 through the follow-up sliding sleeve 23, and the end of the support rod 22 is provided with a sliding clamping block 24 slidingly connected with the transverse guide rail 21.

[0041] When the rotating shaft 6 drives the end cover 5 and the screen drum 4 to swing, the end cover 5 drives the rotating drum 13 to rotate around the circumference of the rotating shaft 6, the transverse guide rail 21 limits the rotating drum 13 through the sliding clamping block 24 and the support rod 22, drives the rotating drum 13 to rotate relative to the screen drum 4, so that the rotating drum 13 always remains vertical downward, the horizontal movement of the rotating drum 13 caused by swinging drives the sliding clamping block 24 to move horizontally along the transverse guide rail 21, and the vertical movement of the rotating drum 13 caused by swinging drives the transverse guide rail 21 and the follow-up sliding sleeve 23 to slide up and down along the fixed frame 20.

[0042] The screen drum 4 corresponds to the serpentine downward sliding assembly 16 one by one, each screen drum 4 is respectively provided with a group of serpentine downward sliding assemblies 16, the baffle one 17 and the baffle two 18 are the same in structure, the cross section of the baffle one 17 and the cross section of the baffle two 18 are mirror-symmetrical with the reference line being the line connecting the shaft center of the rotating shaft 6 and the shaft center of the screen drum 4, the axial projection of the baffle one 17 partially overlaps the axial projection of the baffle two 18, and the overlapping angle of the baffle one 17 and the baffle two 18 is slightly smaller than the swinging angle of the swinging screening mechanism 2.

[0043] Referring to Figure 1 , Figure 2 , Figure 7 and Figure 10 , the air source 12 and the air injection assembly 15 on both sides of the rotating drum 13 are respectively connected and communicated with a gas conveying pipeline 25, the gas conveying pipeline 25 is symmetrically arranged on both sides of the rotating drum 13, the air injection assembly 15 comprises a plurality of groups of nozzles 26 arranged equidistantly along the axial direction of the rotating drum 13, the airflow coverage ranges of adjacent two groups of nozzles 26 overlap, and the nozzles 26 are arranged obliquely upward.

[0044] As shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 10 , the gas conveying pipeline 25 comprises a gas conveying hose 27 and a gas conveying cavity 28, the gas conveying cavity 28 is arranged on the side wall of the rotating drum 13, the gas conveying cavity 28 is communicated with the nozzles 26, and the gas conveying hose 27 is connected and arranged between the air source 12 and the gas conveying cavity 28.

[0045] As shown in Figures 1-6As shown, the rear end of the rotary drum 13 is fixedly connected with a discharging mechanism 33, the discharging mechanism 33 includes multiple groups of discharging barrels 34 coaxially nested from inside to outside, the discharging barrels 34 are provided with an opening on one side, the discharging barrels 34 correspond to the screen drums 4 one by one, the opening side of the discharging barrels 34 is coaxially communicated to the tail end of the screen drum 4, the outermost discharging barrel 34 is coaxially fixedly connected with the outermost screen drum 4 through the side wall of the rotary drum 13, the lengths of the multiple groups of discharging barrels 34 gradually increase from outside to inside, the tail end of the inner discharging barrel 34 penetrates the tail end of the adjacent outer discharging barrel 34 and extends out of the adjacent outer discharging barrel 34, the tail end bottom wall of the discharging barrel 34 is provided with a discharging port 35, the tail end of the machine frame 1 is provided with multiple groups of receiving boxes 36, the upper wall of the receiving box 36 is provided with a discharging port 55, the discharging port 55 and the discharging port 35 are coaxially communicated through a flexible discharging pipe 37, and the discharging barrel 34, the discharging port 35, the flexible discharging pipe 37 and the receiving box 36 correspond to each other.

[0046] As shown in Figure 1 and Figure 2 , the air source 12 includes an air compressor 38 and an air storage tank 39, the air storage tank 39 is arranged on one side of the machine frame 1, and the air compressor 38 is arranged above the air storage tank 39, and the air compressor 38 is communicated with the air storage tank 39.

[0047] As shown in Figure 2 and Figure 7 , the arc length of the rotary drum 13 between the two symmetrical groups of air jet assemblies 15 is greater than one fourth of the circumference of the rotary drum 13 and less than one half of the circumference of the rotary drum 13, so that when the rotary drum 13 rotates around the screen drum 4 under the action of the direction adjusting mechanism 14, the air jet assemblies 15 can blow air flow to the lower half of the screen drum 4, and the scented tea will not cover the air jet assemblies 15.

[0048] As shown in Figures 1-4 and Figure 11 , the swing drive 11 includes a swing rod 40 and a reciprocating assembly 41, one end of the swing rod 40 is fixedly connected with the rotating shaft 6, a push-pull sliding groove 42 is arranged on the swing rod 40, the reciprocating assembly 41 is arranged on the machine frame 1, the output end of the reciprocating assembly 41 is provided with a reciprocating sliding block 43, a sliding shaft 44 is arranged on the side wall of the reciprocating sliding block 43, the sliding shaft 44 is slidingly arranged in the push-pull sliding groove 42, the reciprocating assembly 41 drives the reciprocating sliding block 43 and the sliding shaft 44 to reciprocate, and the reciprocating sliding block 43 drives the swing rod 40 to reciprocate through the sliding shaft 44 and the push-pull sliding groove 42.

[0049] The reciprocating assembly 41 comprises a reciprocating chute 45, a bidirectional screw rod 46, a nut block 47 and a driving motor 48. The reciprocating chute 45 is arranged on the rack 1. The bidirectional screw rod 46 is rotatably arranged in the reciprocating chute 45. The driving motor 48 is arranged on the side wall of the rack 1. The output end of the driving motor 48 is connected with the bidirectional screw rod 46. The nut block 47 is slidingly arranged in the reciprocating chute 45. The nut block 47 is screw-connected with the bidirectional screw rod 46. The reciprocating block 43 is arranged on the side wall of the nut block 47. The reciprocating block 43 is slidingly arranged along the reciprocating chute 45.

[0050] As shown in Figure 1 and Figure 5 The rack 1 is provided with a discharging mechanism at the front end. The discharging mechanism comprises a storage hopper 49 and a discharging hose 50. The storage hopper 49 is fixedly arranged at the front end of the rack 1. The discharging hose 50 is communicatively arranged between the storage hopper 49 and the feeding hole 10. The storage hopper 49 is provided with a vibrating motor 51. The vibrating motor 51 assists the discharging.

[0051] As shown in Figures 5-10 The bottom end of the rotating drum 13 is provided with a dust discharging through hole 52. The dust discharging through hole 52 is connected with an up-down dust discharging hopper 53. The dust discharging hopper 53 facilitates the discharge of dust and debris in the rotating drum 13. The bottom end of the dust discharging hopper 53 is provided with a dust collecting cavity 54 through bolt mounting. The outermost screen cylinder 4 screens the scented tea debris and dust particles into the rotating drum 13 and collects the dust particles into the dust collecting cavity 54 through the dust discharging through hole 52 and the dust discharging hopper 53. The dust collecting cavity 54 can be removed to clean the impurities in the dust discharging hopper 53 and the rotating drum 13.

[0052] In use, the scented tea to be screened is poured into the storage hopper 49. Then the device is powered on. The vibrating motor 51, the swing drive 11 and the air source 12 are started. The vibrating motor 51 drives the storage hopper 49 to vibrate. The vibration assists the scented tea in the storage hopper 49 to slide downward along the discharging hose 50 through the feeding hole 10 into the innermost screen cylinder 4. Then the scented tea is subjected to multi-stage screening from the inside to the outside through the multiple screen cylinders 4. When the scented tea slides downward along the screen cylinder 4, the scented tea is first blocked by the frontmost baffle 17. When the swing drive 11 is started, the driving motor 48 drives the bidirectional screw rod 46 to rotate. The bidirectional screw rod 46 drives the nut block 47 to reciprocally slide along the reciprocating chute 45. The nut block 47 drives the reciprocating block 43 to reciprocally slide along the reciprocating chute 45. The reciprocating block 43 drives the swing lever 40 to reciprocally swing through the slide shaft 44 and the push-pull chute 42. The swing lever 40 drives the end cover 5 and the swing ring 9 to reciprocally swing around the rotating shaft 6 through the swing seat 17 and the swing seat 8. Thus, the rotating drum 13 and the screen cylinder 4 are driven to reciprocally swing around the rotating shaft 6. The screen cylinder 4 swings to drive the scented tea to tumble in the screen cylinder 4 and constantly fall to the lowest part of the screen cylinder 4. The lowest part of the screen cylinder 4 constantly changes in the swinging process of the screen cylinder 4. Referring to Figure 9When the screen cylinder 4 swings to the highest point on one side, the baffle one 17 rotates away from the lowest point of the screen cylinder 4, and the scented tea rolls down along the baffle one 17 and the baffle two 18 to the lowest point of the screen cylinder 4. The scented tea previously blocked by the baffle one 17 can slide backward along the bottom wall of the screen cylinder 4 which is arranged obliquely to the baffle two 18 behind the baffle one 17. At this time, the baffle two 18 is located at the lowest point of the screen cylinder 4 and blocks the scented tea. When the screen cylinder 4 swings to the lowest point, the baffle one 17 and the baffle two 18 are both located at the lowest point of the screen cylinder 4, and the scented tea cannot slide backward. When the screen cylinder 4 swings to the highest point on the other side, the baffle one 17 rotates to the lowest point of the screen cylinder 4, and the baffle two 18 rotates away from the lowest point of the screen cylinder 4. The scented tea rolls down along the baffle one 17 and the baffle two 18 to the lowest point of the screen cylinder 4. The scented tea previously blocked by the baffle two 18 can slide backward along the bottom wall of the screen cylinder 4 which is arranged obliquely to the baffle one 17 behind the baffle two 18. The baffle one 17 and the baffle two 18 alternately block the scented tea that slides down. With the reciprocating screen cylinder 4, the scented tea alternately slides down from the side of the baffle one 17 and the side of the baffle two 18. With the cooperation of the reciprocating screen cylinder 4 and the baffle one 17 and the baffle two 18, the scented tea slides down in a snake-shaped route in the screen cylinder 4, which effectively prolongs the time of the scented tea sliding down from the screen cylinder 4, thereby prolonging the screening time of the scented tea and ensuring complete screening. The screened scented tea slides down to the corresponding discharge cylinder 34 through the screen cylinder 4 and is stored in the corresponding receiving box 36 through the discharge opening 55 and the flexible discharge pipe 37. When the screen cylinder 4 swings around the rotating shaft 6, the transverse guide rail 21 limits the rotating cylinder 13 through the sliding block 24 and the supporting rod 22, drives the rotating cylinder 13 to rotate relative to the screen cylinder 4, and makes the rotating cylinder 13 always keep vertical downward. The horizontal movement of the rotating cylinder 13 causes the sliding block 24 to move horizontally along the transverse guide rail 21. The vertical movement of the rotating cylinder 13 causes the transverse guide rail 21 and the follower sleeve 23 to slide up and down along the fixed frame 20. At the same time, the air source 12 sends airflow into the air supply cavity 28 through the air supply hose 27 and sprays the airflow out through the obliquely upward arranged nozzle 26. The airflow sprays obliquely upward from the bottom of the screen cylinder 4 to the top of the screen cylinder 4, thereby blowing the scented tea stuck in the screen cylinder 4 upward. At the same time, the rotating screen cylinder 4 also causes the scented tea with slight blockage in the screen cylinder 4 to fall under the action of gravity. The direction adjusting mechanism 14 makes the rotating cylinder 13 always keep vertical downward, thereby driving the rotating cylinder 13 to rotate relative to the screen cylinder 4 to realize self-adjustment when the screen cylinder 4 reciprocates. The rotating cylinder 13 rotates relative to the screen cylinder 4, which can make the nozzle 26 blow airflow in the opposite direction to different positions of the screen cylinder 4, effectively prevent the screen cylinder 4 from being blocked, and realize the technical effect of cleaning while rotating.

[0053] In example two, the difference from example one is that Figures 1-11As shown, the gas pipeline 25 and the gas source 12 are provided with a gas two-way switching assembly 29, the gas two-way switching assembly 29 adopts a two-position three-way electromagnetic valve, the two-position three-way electromagnetic valve is provided with one gas inlet end and two gas outlet ends, when the electromagnetic valve coil is powered on, the first gas outlet end is opened, and the second gas outlet end is closed; when the electromagnetic valve coil is powered off, the first gas outlet end is closed, and the second gas outlet end is opened; the gas inlet end of the two-position three-way electromagnetic valve is communicated with the gas source 12 through a gas conveying hose 30, the gas tank 39 is communicated with the gas conveying hose 30, and the two gas outlet ends of the two-position three-way electromagnetic valve are respectively communicated with two gas conveying hoses 27, the two-position three-way electromagnetic valve controls the switching of the gas between the two gas pipelines 25, so that the gas is sprayed out from different sides of the rotating drum 13, and the screen cylinder 4 is blown in different directions.

[0054] As shown in the drawings, Figures 1-3 The rack 1 is provided with a controller 31, the middle part of the transverse guide rail 21 is provided with a shielding sensor 32, and the controller 31 is electrically connected with the shielding sensor 32 and the two-position three-way electromagnetic valve. In this embodiment, the shielding sensor 32 adopts an E18-D80NK infrared sensor, which is a photoelectric sensor integrating emission and reception. The emitted light is emitted after being modulated by the emission head, and the receiving head demodulates and outputs the reflected light. The controller 31 adopts a 51 single-chip microcomputer.

[0055] When the sliding block 24 slides through the middle part of the transverse guide rail 21, the shielding sensor 32 generates an electrical signal and sends it to the controller 31, and the controller 31 controls the two-position three-way electromagnetic valve to reverse. The controller 31 controls the two-position three-way electromagnetic valve to reverse once every time the shielding sensor 32 triggers. The two-position three-way electromagnetic valve controls the switching of the gas between the two gas pipelines 25, so that the gas is sprayed out from different sides of the rotating drum 13, and the screen cylinder 4 is blown in different directions. In this embodiment, when the screen cylinder 4 is on the left side of the rotating shaft 6, the controller 31 controls the nozzle 26 on the right side of the rotating drum 13 to be communicated with the gas source 12 to spray gas, and the right side of the screen cylinder 4 is cleaned. When the screen cylinder 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 be communicated with the gas source 12 to spray gas, and the mesh holes on the left side of the screen cylinder 4 are cleaned. By means of the reciprocating swing of the screen cylinder 4 and the gas flow sprayed by the nozzle 26, the tea flowers stuck in the mesh holes of the screen cylinder 4 can be effectively cleaned, the screen cylinder 4 can be effectively prevented from being blocked, and the airflow interference caused by simultaneous gas spraying on both sides can be avoided.

[0056] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices.

[0057] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.

Claims

1. An automatic screening device for scented tea production, characterized by: The invention comprises a frame (1), a swing-type screening mechanism (2) and an air-blast anti-blocking mechanism (3), wherein the swing-type screening mechanism (2) is arranged in an inclined and rotatable manner inside the frame (1), and the air-blast anti-blocking mechanism (3) is coaxially rotatably sleeved on the outside of the swing-type screening mechanism (2); The swing-type screening mechanism (2) comprises a plurality of screen drums (4) coaxially nested from the inside to the outside and an end cover (5) fixedly arranged on one side of the screen drum (4); a rotating shaft (6) is rotatably provided on the frame (1); a first swing seat (7) and a second swing seat (8) are fixedly arranged on the rotating shaft (6) in sequence along the axial direction; the first swing seat (7) is fixedly connected to the end cover (5); a swing ring (9) is fixedly connected to the second swing seat (8); the swing ring (9) is coaxially arranged with the end cover (5); a feed hole (10) is provided on the end cover (5); and a swing drive (11) for driving the rotating shaft (6) to rotate back and forth is provided on the frame (1); The air impact anti-blocking mechanism (3) comprises an air source (12) and a rotating drum (13) with an opening on one side, the rotating drum (13) is rotatably arranged in the swing ring (9), the open side of the rotating drum (13) is rotatably connected to the end cover (5), the rotating drum (13) is coaxially rotatably sleeved on the outside of the multiple groups of screen drums (4), a direction adjustment mechanism (14) for keeping the rotating drum (13) vertically downward is provided between the rotating drum (13) and the frame (1), and jet assemblies (15) for jetting obliquely upward are symmetrically provided on both sides of the bottom wall of the rotating drum (13), the air source (12) is provided on one side of the frame (1), and the air source (12) is communicated with the jet assembly (15); A serpentine descending assembly (16) is provided in the screen drum (4), and the serpentine descending assembly (16) includes a baffle 1 (17) and a baffle 2 (18), wherein the baffle 1 (17) and the baffle 2 (18) are arranged at intervals and staggered along the axis direction of the screen drum (4), and the baffle 1 (17) and the baffle 2 (18) are arranged in a fan shape, and the baffle 1 (17) and the baffle 2 (18) are coaxial with the screen drum (4).

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

3. The automatic screening equipment for scented tea production according to claim 2, characterized in that: 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 arranged on the upper wall of the base plate (19). The adjustment mechanism (14) includes a transverse guide rail (21) and a support rod (22) fixed to the bottom end of the rotating drum (13). Both ends of the transverse guide rail (21) are provided with a follower sliding sleeve (23), and the follower sliding sleeve (23) is 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 sliding sleeve (23). The support rod (22) is L-shaped, and the end of the support rod (22) is provided with a sliding block (24) slidably connected to the transverse guide rail (21).

4. The automatic screening equipment for scented tea production according to claim 3, characterized in that: An air supply pipe (25) is provided between the air source (12) and the jet assemblies (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 a plurality of groups of nozzles (26) arranged equidistantly along the axial direction of the rotating drum (13). The airflow coverage ranges of two adjacent groups of nozzles (26) overlap, and the nozzles (26) are arranged obliquely upward.

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

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

7. The automatic screening equipment for scented tea production according to claim 6, characterized in that: The mesh apertures of the multiple groups of screen drums (4) decrease from the inside to the outside, the feed hole (10) is connected to the innermost screen drum (4), and the arc length of the drum (13) between the two symmetrical groups of jet assemblies (15) is greater than one-quarter of the circumference of the drum (13) and less than one-half of the circumference of the drum (13).

8. The automatic screening equipment for scented 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 provided on the side wall of the rotating drum (13). The air supply chamber (28) is communicated with the nozzle (26). The air supply hose (27) is communicated between the air source (12) and the air supply chamber (28).

9. The automatic screening equipment for scented tea production according to claim 8, characterized in that: An ash discharge through hole (52) is provided at the bottom end of the rotating drum (13), an ash discharge hopper (53) extending vertically is connected to the ash discharge through hole (52), and an ash collecting chamber (54) is installed at the bottom end of the ash discharge hopper (53).

10. The automatic screening equipment for scented tea production according to claim 9, characterized in that: The swing drive (11) includes a swing rod (40) and a reciprocating assembly (41), one end of the swing rod (40) is fixedly connected to the rotating shaft (6), the swing rod (40) is provided with a push-pull chute (42), the reciprocating assembly (41) is arranged 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 clamped in the push-pull chute (42), the front end of the frame (1) is provided with a discharge mechanism, the discharge mechanism includes a storage hopper (49) and a discharge hose (50), the storage hopper (49) is fixedly arranged at the front end of the frame (1), the discharge hose (50) is connected between the storage hopper (49) and the feed hole (10), and the storage hopper (49) is provided with a vibration motor (51).

Images