Crushing device for tea classification and grading

Abstract

The invention discloses a tea classification and grading crushing device which comprises a multi-stage net, the multi-stage net comprises a downwards-concave arc-shaped multi-stage screen, one side of the multi-stage screen is connected with a fixed edge plate, the other side of the multi-stage screen is connected with a movable edge plate, the fixed edge plate is fixedly installed on one side of a supporting frame, and the movable edge plate is movably connected with the other side of the supporting frame in a lap joint mode; a sealing plate is attached to each of the two ends of the multi-stage screen, and the sealing plates are mounted on the supporting frame; rotating shafts are arranged at the two ends of the rotating drum, parts of the rotating shafts are inserted into the multi-stage screen, the rotating shafts are installed on the supporting frame through rotating drum distance adjusting pieces, and a plurality of stage smashing pieces are installed on the rotating drum along the longitudinal circumferential face and correspond to the multi-stage screen; one end of the screen distance adjusting piece is mounted on the support frame, and the other end is in transmission connection with the movable side plate; one end of the cover body is hinged with the support frame, the other end of the cover body is provided with a lapping plate, and when the cover body movably covers the rotary drum, the lapping plate is lapped with the movable side plate; one end of the locking mechanism is hinged with the support frame, and the other end of the locking mechanism movably locks the lapping plate and the movable side plate on the support frame; and the driving mechanism is in transmission connection with a rotating shaft.

Description

Technical Field

[0001] The invention relates to tea leaf crushing equipment, in particular to a tea leaf crushing device for grading tea leaves. Background Art

[0002] The main components of tea include tea polyphenols, caffeine (caffeine), amino acids, minerals and vitamins. After soaking, tea polyphenols, caffeine (caffeine), amino acids, minerals and vitamins are integrated into the tea. Drinking it can excite the nerve center, promote metabolism, strengthen the heart and relieve spasms, lower blood pressure and blood lipids, promote gastric juice secretion, aid digestion, relieve greasiness, and enhance body resistance.

[0003] In addition to tea leaves, tea leaves also come in broken tea leaves, powdered tea leaves, etc. Broken tea leaves and powdered tea leaves are usually further processed with the help of tea processing equipment.

[0004] After searching, it was found that the existing processing equipment for broken tea and powdered tea are as follows:

[0005] 1. The Chinese patent application (CN119014471A) discloses a rolling cutter in its specification, comprising: a frame, a shell, a first roller, a second roller and a cutter; the first roller is coaxially connected to the second roller so that a gap is formed between the outer wall of the first roller and the inner wall of the first roller, the second roller rotates on the frame, the first roller and the second roller are placed horizontally, and one end of the first roller forms a feed inlet, the other end of the first roller forms a first discharge outlet, and the end of the second roller close to the first discharge outlet forms a second discharge outlet; the wall of the first roller has a plurality of first through holes, and the wall of the second roller has a plurality of first through holes. The wall is provided with a plurality of second through holes, and the size of the second through holes is smaller than the size of the first through holes; the outer shell is mounted on the frame and covers the second roller, and the outer shell is formed with a first discharge channel, a second discharge channel and a third discharge channel, the first discharge channel is opposite to and connected with the first discharge port, the second discharge channel is opposite to and connected with the second discharge port, and the third discharge channel is opposite to and connected with the bottom of the second roller; the cutter includes a handle and a blade, the handle is connected to the frame and extends into the first roller, the blade is connected to the handle and is located in the first roller, and a cutting space is formed between the blade and the inner wall of the first roller. It also includes an adjustment component, an adjustment component is provided between the frame and the handle, and the adjustment component is used to adjust the distance between the blade and the inner wall of the first roller.

[0006] 2. Chinese patent (CN220211767U) discloses in its specification a multifunctional crushing device for tea production, comprising a processing tank and a feed port and a discharge port opened at the top and bottom of the processing tank, the inner side wall of the processing tank is fixedly connected with a fixing ring, the inner side wall of the fixing ring is rotatably connected with a coarse grinding annular upper grinding block and a fine grinding annular lower grinding block, the feed hole of the coarse grinding annular upper grinding block and the discharge hole of the fine grinding annular lower grinding block are respectively connected with the feed port and the discharge port, the inner side wall of the discharge port is fixedly connected with a plurality of fixing rods, the tops of the plurality of fixing rods are fixedly connected with the same fine grinding upper grinding block, the top of the fine grinding upper grinding block is fixedly connected with a coarse grinding lower grinding block, the bottom of the processing tank is fixedly connected with a supporting frame, the bottom of the supporting frame is fixedly provided with a plurality of locking universal wheels, and the outer side wall of the processing tank is provided with a rotating device for rotating the coarse grinding annular upper grinding block and the fine grinding annular lower grinding block.

[0007] The inventors found that the position between the first roller and the second roller in the above-mentioned rolling cutter is fixed and non-adjustable. Although the adjustment component adjusts the distance between the blade and the inner wall of the first roller, a single adjustment of the distance between the blade and the inner wall of the first roller produces broken tea of ​​a single specification.

[0008] In addition, the multifunctional pulverizing device for tea production can realize secondary pulverizing of tea leaves, but it can only be used to produce pulverized tea, and its production function is single.

[0009] Therefore, in view of the defects of the prior art mentioned above, a pulverizing device for grading tea leaves by category was developed. Summary of the invention

[0010] The purpose of the present invention is to provide a tea leaf classification crushing device in view of the defects of the prior art.

[0011] In order to achieve the above-mentioned purpose of the present invention, the following technical scheme is adopted:

[0012] A pulverizing device for grading tea types, comprising a multi-stage net, wherein the multi-stage net comprises a fixed edge plate, a movable edge plate and a multi-stage screen, wherein the multi-stage screen is a downwardly concave arc-shaped net structure, one side of which is connected to the fixed edge plate, and the other side of which is connected to the movable edge plate, wherein the fixed edge plate is fixedly mounted on one side of a support frame, and the movable edge plate is movably overlapped on the other side of the support frame; a sealing plate, wherein the two ends of the multi-stage screen are respectively attached to a sealing plate, and the sealing plate is mounted on the support frame; a rotating drum, wherein the two ends of the rotating drum are provided with rotating shafts, and the multi-stage screen is partially inserted therein, and each rotating shaft is mounted on the support frame through a rotating drum distance adjusting member, and the longitudinal circumferential surface of the rotating drum Corresponding to the multi-stage screen, multiple levels of crushing parts are installed; a screen distance adjusting part, one end of the screen distance adjusting part is installed on the support frame, and the other end is connected to the moving side plate in a transmission manner; a cover body, one end of the cover body is hinged to the support frame, and the other end is provided with a strap, when the cover body is movably buckled on the drum, the strap is overlapped with the moving side plate; a locking mechanism, one end of the locking mechanism is hinged to the support frame, and the other end movably locks the strap and the moving side plate to the support frame; a driving mechanism, the driving mechanism is connected to a rotating shaft in a transmission manner; and a hopper, the hopper is installed at one end of the cover body; wherein a discharge port is provided on the sealing plate away from the hopper.

[0013] Furthermore, the rotating drum distance adjusting member includes a support plate, one end of which is hinged to the support frame, and the other end of which extends downwardly at an angle; a bearing seat, which is installed on the support plate; a first limit plate, which is connected to the other end of the support plate; a second bolt, which is threadedly passed through the first limit plate; a second limit plate, which is installed on the first limit plate and extends downward, and the second limit plate is provided with an arc-shaped adjustment groove; and a first bolt, which is passed through the adjustment groove.

[0014] Furthermore, the present invention provides a tea type grading crushing device further comprising a shaft sleeve, a support seat and a support shaft, wherein the support plate is provided with a shaft sleeve, the shaft sleeve is provided with a shaft hole, the support seat is provided with a support shaft and is installed on the support frame, and the support shaft is provided with a shaft hole.

[0015] Furthermore, the locking mechanism includes a swing rod, both ends of which are bent structures, one end is equipped with a threaded sleeve, and the other end is equipped with a rotating shaft; a support sleeve, the support sleeve is sleeved on the rotating shaft and installed on the support frame; and a supporting screw, the supporting screw bolt is passed through a threaded sleeve.

[0016] Furthermore, a crushing device for grading tea categories of the present invention also includes a material guide plate, a partition and a hopper, wherein the material guide plate is installed at the bottom of the multi-stage screen; a partition is provided between two adjacent screening nets on the outer side of the multi-stage screen, and the partition extends and is connected to the material guide plate; the hopper is installed at one end of the cover body; wherein a zero-level outlet is provided on a sealing plate away from the hopper.

[0017] Furthermore, the screen distance adjusting member includes a base plate, one end of which is installed on a support frame, and the other end extends outward relative to the support frame to be connected to a vertical plate, and the vertical plate is provided with a U-shaped groove; a threaded barrel, the threaded barrel is penetrated by the U-shaped groove; a retaining ring, the retaining ring is installed at one end of the threaded barrel; a limiting boss, the limiting boss is installed at the other end of the threaded barrel; and a push-pull screw, the push-pull screw is penetrated by the limiting boss, the threaded barrel, and the retaining ring in sequence, and is threadedly connected to the threaded barrel.

[0018] Furthermore, the graded crushed pieces include first-grade crushed pieces, second-grade crushed pieces and third-grade crushed pieces. The third-grade crushed pieces, second-grade crushed pieces and first-grade crushed pieces are sequentially distributed along the longitudinal direction of the rotating drum, and the third-grade crushed pieces correspond to the hopper.

[0019] Furthermore, the third-stage crushing element is spirally mounted on the drum.

[0020] Furthermore, the second-stage crushing element includes a plurality of second-stage crushing rods, which are circumferentially distributed on the circumferential surface of the rotating drum at intervals, and each second-stage crushing rod intersects with the axis of the rotating drum, and the angle formed by the intersection is α, 0<α≤30°.

[0021] Furthermore, the first-stage crushing element includes a plurality of first-stage crushing rods, which are circumferentially distributed on the circumferential surface of the rotating drum at intervals, and each first-stage crushing rod intersects with the axis of the rotating drum, and the angle formed by the intersection is β, 5°≤β≤50°.

[0022] The present invention has the following improvements over the prior art:

[0023] 1. The present invention can realize the production of different specifications of powdered tea, broken tea and tea stems from the same batch of raw materials. The rotating drum is equipped with multiple grades of crushing parts, which can be used to crush tea leaves, push tea leaves to move and break up tea leaves. When producing broken tea leaves and powdered tea leaves, the distance between the multi-level screen and the rotating drum is adjusted by the rotating drum distance adjusting part and the screen distance adjusting part, so that the multiple grades of crushing parts squeeze the tea leaves on the multi-level screen, and grind and crush the tea leaves. The broken tea leaves and tea powder of each specification are filtered by the corresponding grade of screen, and a partition is provided between the adjacent grade of screens, and the filtered broken tea leaves and tea powder are guided by the guide plate to the corresponding grade outlet for discharge.

[0024] 2. The third-level crushing parts in the form of spiral blades, the second-level crushing parts in the form of long rods, and the first-level crushing parts in the form of short rods are sequentially distributed on the rotating drum of the present invention in the direction extending from the hopper to the zero-level material guide. The spiral blades can push the tea leaves falling from the hopper to be evenly distributed while pushing the tea leaves forward, avoiding local overload, preventing blockage, and improving the crushing efficiency. The second-level crushing parts in the form of long rods and the third-level crushing parts in the form of short rods further break up the tea leaves, increase the contact between the tea leaves and the graded crushing parts and the multi-stage screens, which can not only make the crushing more uniform, but also speed up the crushing speed. It can be understood that the graded crushing parts of the present invention can improve the crushing efficiency and uniformity, reduce blockage and energy consumption, extend the life of the equipment, and improve product quality.

[0025] 3. The drum distance adjusting member of the present invention is used to support and install the drum, and can also adjust the position of the drum. The support plate is intersected with the first limit plate, the second bolt can threadably fix the first limit plate to the support frame, and the first bolt threadably fixes the second limit plate to the support frame.

[0026] 4. The screen distance adjusting member of the present invention is used to push and pull the moving side plate, which drives the multi-stage screen to move, thereby changing the distance between the multi-stage screen and the multiple levels of crushing parts on the rotating drum. The limiting boss and the clamping ring clamp the threaded barrel in the U-shaped groove of the vertical plate. When the threaded barrel is rotated, the push-pull screw is screwed in and out of the threaded barrel, and the push-pull screw drives the moving side plate, which drives the multi-stage screen to move, thereby adjusting the distance between the multi-stage screen and the rotating drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0028] Figure 1 This is a schematic diagram of the structure of a pulverizing device for grading tea leaves according to the present invention;

[0029] Figure 2 It is a schematic diagram of the structure in which multiple levels of crushing parts are installed on the rotary drum in the present invention;

[0030] Figure 3 It is a schematic diagram of the installation structure of the multi-level network in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the rotary drum distance adjusting member in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the locking mechanism in the present invention;

[0033] Figure 6A schematic diagram of the structure of the screen distance adjusting member in the present invention;

[0034] Figure 7 A schematic diagram of the product form of green powder tea produced by the present invention;

[0035] Figure 8 This is a schematic diagram of the product form of green broken tea 1 produced by applying the present invention;

[0036] Fig. 9 This is a schematic diagram of the product form of green broken tea 2 produced by applying the present invention;

[0037] Fig.10 The figure is a schematic diagram of the product form of green tea stems produced by applying the present invention.

[0038] Names and serial numbers of components in the figure:

[0039] 3-crushing device, 31-cover, 32-drum, 33-first-stage crushing parts, 34-second-stage crushing parts, 35-hopper, 36-feeding control valve, 37-feeding pipe, 38-multi-stage net, 381-third-stage screen, 382-second-stage screen, 383-first-stage screen, 384-moving side plate, 385-fixed side plate, 39-support seat, 391-support shaft, 310-rotating shaft, 311-transmission member, 312-driven wheel, 313-driving wheel, 314-driving shaft, 315-driving motor, 316-support frame, 317-material guide plate, 318-third-stage outlet, 319-third-stage unloading member, 320-conveyor, 321-second-stage outlet, 322-second-stage unloading member, 323-partition plate, 324-first-stage outlet, 325-first-stage unloading member, 326-longitudinal support member, 327-vertical support;

[0040] 328-rotating drum distance adjusting member, 3281-shaft sleeve, 32811-shaft hole, 3282-second bolt, 3283-support plate, 3284-bearing seat, 3285-first limit plate, 3286-first bolt, 3287-second limit plate, 32871-adjusting slot;

[0041] 329-locking mechanism, 3291-support screw, 3292-shift rod, 3293-anti-slip plate, 3294-threaded sleeve, 3295-swing rod, 3296-rotating shaft, 3297-support sleeve;

[0042] 330-screen distance adjusting part, 3301-handle, 3302-push-pull screw, 3303-threaded cylinder, 3304-clamping ring, 3305-bottom plate, 3306-limiting boss, 3307-vertical plate, 33071-U-shaped groove;

[0043] 331 - third-stage crushing parts, 332 - sealing plate, 333 - bridging plate, 334 - zero-stage outlet, 335 - zero-stage unloading parts. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present application.

[0045] Embodiment 1:

[0046] like Figures 1 to 6 As shown, a pulverizing device 3 for grading tea categories in this embodiment includes a multi-stage net 38, a sealing plate 332, a guide plate 317, a partition 323, a rotating drum 32, a screen distance adjusting member 330, a cover 31, a locking mechanism 329, a driving mechanism and a hopper 35. The multi-stage net 38 includes a fixed edge plate 385, a movable edge plate 384 and a multi-stage screen. The multi-stage screen is a concave arc mesh structure, one side of which is connected to the fixed edge plate 385 and the other side is connected to the movable edge plate 384. The fixed edge plate 385 is fixedly installed on one side of the support frame 316, and the movable edge plate 384 is movably overlapped on the other side of the support frame 316. The two ends of the multi-stage screen are respectively attached to a sealing plate 332, and the sealing plate 332 is installed on the support frame 316. The guide plate 317 is installed at the bottom of the multi-stage screen. A partition 323 is provided between two adjacent screening nets on the outer side of the multi-stage screen, and the partition 323 extends and connects with the guide plate 317. Rotating shafts 310 are provided at both ends of the rotating drum 32, and are partially inserted into the multi-stage screen. Each rotating shaft 310 is installed on the support frame 316 through a rotating drum distance adjusting member 328, and multiple grades of crushing parts are installed on the longitudinal circumferential surface of the rotating drum 32 corresponding to the multi-stage screen. One end of the screen distance adjusting member 330 is installed on the support frame 316, and the other end is connected to the moving side plate 384. One end of the cover body 31 is hinged to the support frame 316, and the other end is provided with a strap 333. When the cover body 31 is movably buckled on the rotating drum 32, the strap 333 is overlapped with the moving side plate 384. One end of the locking mechanism 329 is hinged to the support frame 316, and the other end movably locks the strap 333 and the moving side plate 384 to the support frame 316. The driving mechanism is in transmission connection with a rotating shaft 310 ; the hopper 35 is installed at one end of the cover body 31 ; wherein the sealing plate 332 away from the hopper 35 is provided with a zero-stage outlet 334 .

[0047] In order to facilitate the centralized conveying of the tea leaves discharged from the zero-stage outlet 334, a zero-stage discharge member 335 is additionally installed. One end of the zero-stage discharge member 335 is installed at the zero-stage outlet 334, and the other end extends downwardly obliquely relative to the support frame 316. The tea leaves fall from the multi-stage screen 38 through the zero-stage outlet 334 into the zero-stage discharge member 335, and the zero-stage discharge member 335 guides the tea leaves outward.

[0048] A structure of the driving mechanism includes a driving motor 315, a driving shaft 314, a driven wheel 312 and a driving wheel 313. The driving motor 315 is provided with a driving shaft 314, the driving wheel 313 is key-connected with the driving shaft 314, the driven wheel 312 is key-connected with a rotating shaft 310, and the driving wheel 313 is transmission-connected with the driven wheel 312.

[0049] A transmission connection mode between the driving wheel 313 and the driven wheel 312: the driving wheel 313 and the driven wheel 312 are connected by transmission through the transmission member 311. The transmission member 311 can be a transmission belt or a transmission chain. When the transmission member is a transmission belt, the driving wheel 313 and the driven wheel 312 are both pulleys. When the transmission member 311 is a transmission chain, the driving wheel 313 and the driven wheel 312 are both sprockets.

[0050] It should be noted that U-shaped grooves are provided on both ends of the cover body 31 corresponding to the rotating shaft 310 , and the two ends of the cover body are sleeved on the rotating shaft through the U-shaped grooves.

[0051] It is understandable that the hopper 35 is communicated with the inner side of the cover body 31. The tea leaves in the hopper can fall into the interval space between the drum and the cover body.

[0052] like Figure 1 As shown, in order to facilitate the control of the tea leaves in the hopper 35 falling into the interval space between the rotating drum and the cover body, a feed pipe 37 and a feed control valve 36 are additionally installed. One end of the feed pipe 37 is connected to the inner side of the cover body 31, and the other end is connected to the hopper 35 through the feed control valve 36. When the feed control valve 36 is in an open state, the tea leaves in the hopper fall into the interval space between the rotating drum and the cover body. When the feed control valve 36 is in a closed state, the tea leaves in the hopper stop falling into the interval space between the rotating drum and the cover body. It can be understood that the feed control valve 36 can adjust the amount of tea leaves falling by the size of the opening.

[0053] A structure of the feed control valve 36 includes a first valve plate, a second valve plate, a pad and a plug plate. The first valve plate and the second valve plate are provided with corresponding through holes. The first valve plate is connected to the discharge port at the bottom of the hopper, and the second valve plate is connected to the feed pipe. Two pads are installed in parallel and at intervals between the first valve plate and the second valve plate. A through groove is formed between the two pads and the first valve plate and the second valve plate, and the plug plate is movably inserted into the through groove. When the plug plate is inserted into the through groove to block the discharge port, the tea leaves in the hopper stop falling. When the plug plate is pulled out, the discharge port is connected to the feed pipe, and the tea leaves fall from the discharge hopper into the feed pipe.

[0054] It should be noted that the backing plate is placed on the edges of the first valve plate and the second valve plate. The backing plate, the first valve plate and the second valve plate can be fixedly connected by a plurality of bolts.

[0055] Another structure of the feed control valve 36 may be a gate valve. Further, the feed control valve may be an electric gate valve.

[0056] The drum distance adjusting member 328 supports the installation of the drum and can also be used to adjust the distance between the drum and the multi-stage screen, thereby adjusting the distance between multiple levels of crushing elements and the multi-stage screen.

[0057] The screen distance adjusting member 330 is used to adjust the interval between the multi-stage screen and the drum, thereby adjusting the interval between the multi-stage screen and multiple levels of crushing elements, and crushing tea pieces and powdered tea pieces of different particle sizes. Figure 1-3 As shown, the number of screen mesh distance adjusting members that can be installed is 1, 2 or 3, etc. Of course, an appropriate number of screen mesh distance adjusting members can also be installed according to the length of the multi-stage screen mesh.

[0058] The locking mechanism 329 is used to lock and fix the lap plate 333 and the moving side plate to the support frame 316. When the locking state of the locking mechanism is released, the lap plate can be separated from the moving side plate, and the cover body 31 can be opened. When the locking mechanism is in the locked state, the locking mechanism locks and fixes the lap plate 333 and the moving side plate 384 to the support frame 316. It is understandable that the number of locking mechanisms that can be installed is 2, 3, 4, 5 or 6, etc. Of course, an appropriate number of locking mechanisms can be installed according to the length of the cover body.

[0059] A structure of graded crushing parts is given. The graded crushing parts include first-level crushing parts 33, second-level crushing parts 34 and third-level crushing parts 331. The third-level crushing parts 331, second-level crushing parts 34 and first-level crushing parts 33 are sequentially distributed on the rotating drum 32 along the longitudinal direction. The third-level crushing parts 331 correspond to the hopper 35.

[0060] The multiple levels of crushed pieces on the drum 32 correspond to the multi-level screens. The multi-level screens may include a first-level screen 383, a second-level screen 382, ​​and a third-level screen 381. The third-level screen 381 corresponds to the third-level crushed piece 331. The second-level screen 382 corresponds to the second-level crushed piece 34. The first-level screen 383 corresponds to the third-level crushed piece 33.

[0061] It should be noted that the third-level crushing piece is used as the starting crushing point, and the third-level screen can filter out the powder and fine tea leaves mixed in the tea leaves. It can be understood that the largest level in the crushing grade corresponds to the hopper and is used as the starting crushing point.

[0062] like Figure 1-3 As shown, the partition 323 separates adjacent sieves to prevent the tea leaves, broken tea leaves and powder sieved from adjacent sieves from mixing with each other.

[0063] A third-stage outlet 318 is formed between the third-stage screen 381 , the partition plate 323 and the material guide plate 317 . The third-stage outlet 318 is provided with a third-stage discharge member 319 . The third-stage discharge member 319 collects the material discharged from the third-stage outlet.

[0064] A second-stage outlet 321 is formed between the second-stage screen 382 , the partition plate 323 and the guide plate 317 . A second-stage discharge member 322 is installed at the second-stage outlet 321 . The second-stage discharge member 322 collects the material discharged from the second-stage outlet.

[0065] A first-stage outlet 324 is formed between the first-stage screen 383 , the partition plate 323 and the material guide plate 317 . The first-stage outlet 324 is provided with a first-stage discharge member 325 . The first-stage discharge member 325 collects the material discharged from the first-stage outlet.

[0066] A zero-stage outlet 334 is formed on the sealing plate 332 away from the hopper 35 , and a zero-stage discharge member 335 is installed at the zero-stage outlet 334 .

[0067] It should be noted that the particle sizes of tea leaves screened out in the third, second, first and zeroth levels increase in sequence. It is understandable that the method is not limited to four levels, and multiple levels can be set according to production needs.

[0068] The mesh number of the third-level screen can be 80 mesh to 120 mesh. The mesh numbers that can be selected are 80, 90, 100, 110 or 120 mesh.

[0069] The mesh number of the second-stage screen can be 30 mesh to 50 mesh. The mesh numbers that can be selected are 30, 40 or 50 mesh.

[0070] The mesh size of the first-stage screen can be 15 to 25 meshes. The mesh sizes that can be selected are 15, 20 or 25 mu, etc.

[0071] It is understandable that the third-stage sieve, the second-stage sieve, and the first-stage sieve are not limited to the mesh sizes listed above, and appropriate mesh sizes can be selected according to production requirements.

[0072] like Figure 1 , 2 As shown, a structure of the third-stage crushing member. The third-stage crushing member 331 is spirally installed on the rotating drum 32. The third-stage crushing member with a spiral structure can not only crush the tea leaves, but also push the materials on the multi-stage screen to move.

[0073] It should be noted that the third-stage crushing element can be a belt-type spiral sheet. The thickness of the spiral sheet can be 10 to 20 mm, and the optional thickness is 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or 20 mm. The width of the spiral sheet can be 10 to 20 mm. The optional width can be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or 20 mm.

[0074] like Figure 1 , 2 As shown, the second-stage crushing element 34 includes a plurality of second-stage crushing rods, which are circumferentially distributed on the circumferential surface of the drum 32 at intervals, and each second-stage crushing rod intersects with the axis of the drum 32, and the angle formed by the intersection is α, 0<α≤30°. The angle α can be selected from 5°, 10°, 15°, 20°, 25° or 30°, etc.

[0075] When a plurality of second-stage crushing rods are distributed and installed along the circumferential surface of the rotating drum, a spiral structure is formed. The plurality of second-stage crushing rods crush the tea leaves and push the materials on the multi-stage screens to move.

[0076] like Figure 1 , 2 As shown, the first-stage crushing element 33 includes a plurality of first-stage crushing rods, which are circumferentially distributed on the circumferential surface of the drum 32 at intervals, and each first-stage crushing rod intersects with the axis of the drum 32, and the angle formed by the intersection is β, 5°≤β≤50°. The angle β can be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45° or 50°, etc.

[0077] The first stage crushing rod and the second stage crushing rod are arranged on the rotating drum in an intersecting manner, and the first stage crushing rod and the second stage crushing rod are arranged in a staggered manner.

[0078] The height of the first-stage crushing rod and the second-stage crushing rod can be 10-20 mm, and the optional height can be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or 20 mm, etc.

[0079] The width of the first-stage crushing rod and the second-stage crushing rod can be 10-20 mm. The optional width can be 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm or 20 mm.

[0080] It should be noted that the third-level crushing pieces in the form of spiral blades, the second-level crushing pieces in the form of long rods, and the first-level crushing pieces in the form of short rods are distributed in sequence on the rotating drum in the direction extending from the hopper to the zero-level material guide. The spiral blades can push the tea leaves falling from the hopper to be evenly distributed while pushing the tea leaves forward, avoiding local overload, preventing blockage, and improving the crushing efficiency. The second-level crushing pieces in the form of long rods and the third-level crushing pieces in the form of short rods further break up the tea leaves, increase the contact between the tea leaves and the graded crushing pieces and the multi-stage screens, which can not only make the crushing more uniform, but also speed up the crushing speed. It can be understood that the graded crushing pieces of the present invention can improve the crushing efficiency and uniformity, reduce blockage and reduce energy consumption, extend the life of the equipment, and improve product quality.

[0081] like Figure 1 As shown, the discharged broken tea leaves and tea powder can be transported by a conveyor 320. The first-stage outlet 324, the second-stage outlet 321, and the third-stage outlet 318 can each be equipped with a conveyor 320. Alternatively, the first-stage outlet 324, the second-stage outlet 321, and the third-stage outlet 318 can share a conveyor, that is, the conveyor belt of the conveyor corresponds to the first-stage outlet 324, the second-stage outlet 321, and the third-stage outlet 318, and the tea materials discharged from the first-stage outlet 324, the second-stage outlet 321, and the third-stage outlet 318 are transported in a straight line on the conveyor belt, spaced from each other, and do not interfere with each other.

[0082] In some optional embodiments, a structure of the drum distance adjusting member is provided. Figure 4 As shown, the drum distance adjusting member 328 includes a support plate 3283, a first limiting plate 3285, a second bolt 3282, a second limiting plate 3287 and a first bolt 3286. One end of the support plate 3283 is hingedly connected to the support frame 316, and the other end extends downwardly in an inclined manner; the first limiting plate 3285 is connected to the other end of the support plate 3283; the second bolt 3282 is threadedly penetrated through the first limiting plate 3285; the second limiting plate 3287 is installed on the first limiting plate 3285 and extends downward, and the second limiting plate 3287 is provided with an arc-shaped adjustment slot 32871; the first bolt 3286 penetrates the adjustment slot 32871; the bearing seat 3284 is installed on the support plate 3283, and is used to support and install the rotating shaft 310.

[0083] like Figure 1-3 As shown, the support plate 3283 is installed on the support frame 316 at an angle.

[0084] The second bolt 3282 is threadedly passed through the first limiting plate 3285 and is threadedly connected to the support frame 316. The second limiting plate 3285 is installed on the side of the first limiting plate, and the first bolt 3286 is threadedly passed through the adjustment slot 32871 and is threadedly connected to the support frame 316.

[0085] The first limiting plate 3285 , the second bolt 3282 , the second limiting plate 3287 and the first bolt 3286 work together to fix the support plate 3283 to the support frame 316 .

[0086] The working method of the drum distance adjusting member for adjusting the drum is as follows: screw the second bolt 3282 to disengage the support frame 316, and then loosen the first bolt 3286. At this time, the first limit plate 3285, the second limit plate 3287, and the support plate 3283 can all move. That is, the adjustable drum 32 can move relative to the multi-stage screen, so that the drum distance adjusting member can adjust the drum. After adjusting to the required interval, the first bolt 3286 and the second bolt 3282 are tightened and fixed.

[0087] It should be noted that when the drum is adjusted, the distance between the drum and the side of the multi-stage screen close to the grade outlet is adjusted. When the support plate 3283 is swung downward for adjustment, the distance between the drum 32 and the multi-stage screen becomes smaller. When the support plate 3283 is swung upward for adjustment, the distance between the drum 32 and the multi-stage screen increases. It is understandable that when the distance between the drum and the multi-stage screen changes, the distance between the multiple grade crushing pieces and the multi-stage screen changes accordingly. The smaller the distance between the grade crushing pieces and the multi-stage screen, the smaller the particles of the tea powder or broken tea obtained by crushing. The larger the distance between the grade crushing pieces and the multi-stage screen, the larger the particles of the tea powder or broken tea obtained by crushing.

[0088] A hinge connection structure of the support plate 3283 is provided, and a shaft sleeve 3281, a support seat 39 and a support shaft 391 are additionally installed. The support plate 3283 is provided with a shaft sleeve 3281, the shaft sleeve 3281 is provided with a shaft hole 32811, the support seat 39 is provided with a support shaft 391 and is installed on the support frame 316, and the support shaft 391 is penetrated with a shaft hole 32811.

[0089] The support shaft 391 can rotate relative to the support base 39 , and the support plate 3283 can swing relative to the support base 39 through the support shaft 391 .

[0090] The adjusting slot 32871 is in an arc-shaped structure, which can correspond to the arc-shaped trajectory of the swing of the support plate. Therefore, when the support plate needs to swing, the first bolt 3286 and the second limit plate 3287 do not hinder the swing of the support plate.

[0091] In some optional embodiments, a structure of the screen distance adjusting member is provided. Figure 6As shown, the screen distance adjusting member 330 includes a bottom plate 3305, a threaded barrel 3303, a snap ring 3304, a limiting boss 3306 and a push-pull screw 3302. One end of the bottom plate 3305 is mounted on the support frame 316, and the other end extends outward relative to the support frame 316 and is connected to the vertical plate 3307, and the vertical plate 3307 is provided with a U-shaped groove 33071; the threaded barrel 3303 is penetrated with the U-shaped groove 33071; the snap ring 3304 is installed at one end of the threaded barrel 3303; the limiting boss 3306 is installed at the other end of the threaded barrel 3303; the push-pull screw 3302 is penetrated with the limiting boss 3306, the threaded barrel 3303, and the snap ring 3304 in sequence, and is threadedly connected with the threaded barrel 3303.

[0092] The threaded barrel 3303 is placed in the U-shaped groove 33071, and the two ends are respectively provided with a limiting boss 3306 and a snap ring 3304, which limit the threaded barrel 3303 on the vertical surface of the U-shaped groove 33071. That is, the threaded barrel 3303 is clamped on the vertical plate 3307 by the limiting boss 3306 and the snap ring 3304 in its longitudinal direction.

[0093] In order to facilitate the screwing of the threaded barrel 3303, a handle 3301 is additionally installed, and the handle 3301 is connected to the limiting boss 3306. When the handle 3301 is screwed, the handle 3301 drives the limiting boss 3306 to rotate, and the limiting boss 3306 drives the threaded barrel 3303 and the clamping ring 3304 to rotate, and the limiting boss 3306 and the clamping ring 3304 prevent the threaded barrel from moving relative to the vertical plate, and the threaded barrel 3303 is threadedly connected with the push-pull screw 3302, and the push-pull screw 3302 moves relative to the threaded barrel 3303, and the push-pull screw 3302 is connected with the moving side plate 384, and drives the moving side plate 384 to move, and the moving side plate 384 drives the multi-stage screen to move, so as to adjust the spacing of the multi-stage screen relative to the rotating drum, and then the spacing between the grade crushing parts on the rotating drum and the multi-stage screen can be adjusted, so as to change the particle size of the crushed tea leaves.

[0094] In some optional embodiments, a structure of a locking mechanism is provided. The locking mechanism 329 includes a swing rod 3295, a support sleeve 3297, and a top screw 3291. Both ends of the swing rod 3295 are bent structures, one end is installed with a threaded sleeve 3294, and the other end is installed with a rotating shaft 3296; the support sleeve 3297 is sleeved on the rotating shaft 3296 and installed on the support frame 316; the top screw 3291 is bolted with a threaded sleeve 3294.

[0095] The two ends of the swing rod 3295 are bent, which can facilitate the swing rod to swing and engage between the lap plate and the movable side plate.

[0096] The rotating shaft 3296 can rotate relative to the supporting sleeve 3297 , and the swing rod 3295 can swing relative to the supporting sleeve 3297 through the rotating shaft 3296 .

[0097] The top screw rod 3291 is threadedly connected with the threaded sleeve 3294. The top screw rod is screwed clockwise to screw into the threaded sleeve. The top screw rod is screwed counterclockwise to screw out of the threaded sleeve.

[0098] During operation, the cover 31 is buckled onto the rotating drum 32, the lap plate 333 overlaps the moving side plate 384, the swing rod 3295 is driven to swing and engage with the lap plate and the moving side plate, the threaded sleeve is perpendicular to the lap plate 333, the supporting screw 3291 is screwed, the supporting screw 3291 is screwed into the threaded sleeve 3294 and moves and extends toward the lap plate 333, the supporting screw is screwed to press against the lap plate, at this time, the supporting screw presses the lap plate and the moving side plate against the support frame 316. The locking mechanism fixes the cover to the support frame.

[0099] When the cover needs to be opened, the top screw 3295 is loosened, the top screw 3295 is separated from the lap plate 333, and the swing rod 3295 is pushed, and the top screw and the threaded sleeve can follow the swing and deviate from the lap plate, releasing the locking state of the locking mechanism, and the cover can be opened.

[0100] A driving structure of the top screw is provided, and a lever 3292 and an anti-slip plate 3293 are additionally installed. The lever 3292 penetrates the end of the top screw 3291 away from the threaded sleeve 3294, and anti-slip plates 3293 are installed at both ends.

[0101] Anti-slip plates are provided at both ends of the lever to prevent the lever from being detached from the supporting screw.

[0102] One structure of the anti-slip plate may be a circular plate. It is understandable that the diameter of the circular plate is larger than the diameter of the through hole on the top screw for penetrating the lever. The circular plate prevents the lever from detaching from the top screw.

[0103] like Figure 1-3 As shown, a longitudinal support member 326 and a vertical support 327 are additionally installed on the support frame 316. Both ends of the longitudinal support member 326 are installed on the support frame 316 through the vertical support 327. A gap is formed between the bottom of the longitudinal support member 326 and the support frame 316, which can provide space for the swing rod 3295 to swing downward. The support sleeve 3297 is installed on the longitudinal support member 326.

[0104] According to the above embodiments, the working mode of the present invention is as follows:

[0105] The tea leaves to be crushed are put into the hopper 35, and enter the space formed by the cover 31, the drum 32 and the multi-stage screen through the hopper 35. The third-stage crushing parts 331 evenly distribute the fallen tea leaves, push them forward and crush them. The third-stage crushing parts squeeze the tea leaves on the third-stage screen 381 to grind and crush the tea leaves. The powder obtained by crushing is filtered through the third-stage screen, and the powder falls into the guide plate 317 and falls into the third-stage discharge part 319 from the third-stage outlet 318. The third-stage discharge part 319 guides the tea powder outward for discharge.

[0106] The third-stage crushing parts 331 push the tea materials to the second-stage crushing parts 34, which break up and distribute the pushed tea materials again and push them to the first-stage crushing parts, and the second-stage crushing parts 34 squeeze the tea materials on the second-stage screen 382 and grind and cut them into the first kind of broken tea, which are filtered by the second-stage screen 382 and fall into the guide plate 317, and the guide plate 317 guides the first kind of broken tea to the second-stage outlet 321, and the second-stage outlet 321 discharges the first kind of broken tea into the second-stage discharge part 322, and the second discharge part 322 discharges the first kind of broken tea outward.

[0107] The second-stage crushing parts 34 push the tea material to the first-stage crushing parts 33, the first-stage crushing parts 33 break up the tea material again and push it to the zero-stage outlet 334, the first-stage crushing parts 33 squeeze the tea material to the first-stage screen 383 and grind it into the second kind of broken tea, the first-stage screen 383 filters out the second kind of broken tea, the second kind of broken tea falls into the guide plate, the guide plate guides the second kind of broken tea to the first-stage outlet 324, the first-stage outlet 324 guides the second kind of broken tea into the first discharge part 325, and the first discharge part 325 discharges the second kind of broken tea outward.

[0108] The first-stage crushing element 33 pushes the remaining tea leaves to fall into the zero-stage outlet 334 provided on the sealing plate 332, and the tea leaves fall into the zero-stage discharge element 335 through the zero-stage outlet 334. The zero-stage discharge element 335 discharges the remaining tea leaves as tea stems.

[0109] The distance between the rotating drum and the multi-stage screen can be adjusted by the rotating drum distance adjusting member and the screen distance adjusting member, so that the corresponding particle size of broken tea and tea powder can be processed. When the multi-stage screen needs to be adjusted by the screen distance adjusting member, the locking state of the cover body by the locking mechanism can be released first, and the movable side plate 384 can be released from the pressing state, so that the screen distance adjusting member can push and pull the movable side plate to adjust the distance between the multi-stage screen and the rotating drum, and then the locking mechanism can lock the cover body.

[0110] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, the obvious changes or modifications derived therefrom are still within the protection scope of the invention.

Claims

1. A pulverizing device for grading tea leaves, characterized in that: include A multi-stage net (38), the multi-stage net (38) comprising a fixed edge plate (385), a movable edge plate (384) and a multi-stage screen, the multi-stage screen presenting a downwardly concave arc-shaped net structure, one side of which is connected to the fixed edge plate (385), and the other side of which is connected to the movable edge plate (384), the fixed edge plate (385) is fixedly mounted on one side of a support frame (316), and the movable edge plate (384) is movably overlapped with the other side of the support frame (316); A sealing plate (332), wherein two ends of the multi-stage screen are respectively attached to a sealing plate (332), and the sealing plate (332) is installed on a support frame (316); A rotating drum (32), wherein rotating shafts (310) are provided at both ends of the rotating drum (32) and are partially inserted into the multi-stage screen, each rotating shaft (310) is mounted on a support frame (316) via a rotating drum distance adjusting member (328), and a plurality of grade crushing members are mounted on a longitudinal circumferential surface of the rotating drum (32) corresponding to the multi-stage screen; A screen distance adjusting member (330), one end of which is mounted on the support frame (316), and the other end of which is drivingly connected to the movable side plate (384); A cover body (31), one end of the cover body (31) is hingedly connected to the support frame (316), and the other end is provided with a strap (333). When the cover body (31) is movably buckled on the rotating drum (32), the strap (333) overlaps the movable side plate (385); A locking mechanism (329), one end of the locking mechanism (329) is hingedly connected to the support frame (316), and the other end of the locking mechanism (329) is movable to lock the strap (333) and the movable side plate (385) to the support frame (316); as well as A driving mechanism is drivingly connected to a rotating shaft (310).

2. The tea leaf classification pulverizing device according to claim 1, characterized in that: The rotating drum distance adjusting member (328) comprises A support plate (3283), one end of the support plate (3283) is hingedly connected to the support frame (316), and the other end of the support plate (3283) extends downwardly in an inclined manner; A bearing seat (3284), wherein the bearing seat (3284) is mounted on the support plate (3283); A first limiting plate (3285), wherein the first limiting plate (3285) is connected to the other end of the supporting plate (3283); A second bolt (3282), wherein the second bolt (3282) is threadedly passed through the first limiting plate (3285); a second limiting plate (3287), the second limiting plate (3287) being mounted on the first limiting plate (3285) and extending downward, and the second limiting plate (3287) being provided with an arc-shaped adjusting groove (32871); and A first bolt (3286), wherein the first bolt (3286) passes through an adjustment groove (32871).

3. The tea leaf classification pulverizing device according to claim 2, characterized in that: It also includes a shaft sleeve (3281), a support seat (39) and a support shaft (391), wherein the support plate (3283) is provided with a shaft sleeve (3281), the shaft sleeve (3281) is provided with a shaft hole (32811), the support seat (39) is provided with a support shaft (391) and is installed on a support frame (316), and the support shaft (391) is provided with a shaft hole (32811).

4. The tea leaf classification pulverizing device according to claim 1, characterized in that: The locking mechanism (329) comprises A swing rod (3295), both ends of the swing rod (3295) are bent structures, one end is installed with a threaded sleeve (3294), and the other end is installed with a rotating shaft (3296); A support sleeve (3297), wherein the support sleeve (3297) is sleeved on the rotating shaft (3296) and installed on the support frame (316); and A top screw rod (3291) is provided with a threaded sleeve (3294) through a bolt of the top screw rod (3291).

5. The tea leaf classification pulverizing device according to claim 1, characterized in that: It also includes a material guide plate (317), a partition plate (323) and a hopper (35), wherein the material guide plate (317) is installed at the bottom of the multi-stage screen; a partition plate (323) is provided between two adjacent screening nets on the outer side of the multi-stage screen, and the partition plate (323) extends and is connected to the material guide plate (317); the hopper (35) is installed at one end of the cover body (31); wherein a sealing plate (332) away from the hopper (35) is provided with a zero-stage outlet (334).

6. The tea leaf classification pulverizing device according to claim 1, characterized in that: The screen distance adjusting member (330) comprises A bottom plate (3305), one end of the bottom plate (3305) is mounted on the support frame (316), and the other end of the bottom plate (3305) extends outward relative to the support frame (316) and is connected to a vertical plate (3307), wherein the vertical plate (3307) is provided with a U-shaped groove (33071); A threaded barrel (3303), wherein the threaded barrel (3303) is provided with a U-shaped groove (33071); A snap ring (3304), wherein the snap ring (3304) is mounted on one end of the threaded barrel (3303); A limiting boss (3306), wherein the limiting boss (3306) is mounted on the other end of the threaded barrel (3303); and A push-pull screw rod (3302) is provided with a limiting boss (3306), a threaded barrel (3303), and a retaining ring (3304) in sequence, and is threadedly connected to the threaded barrel (3303).

7. The pulverizing device for grading tea leaves according to any one of claims 1 to 6, characterized in that: The graded crushing pieces include first-grade crushing pieces (33), second-grade crushing pieces (34) and third-grade crushing pieces (331). The third-grade crushing pieces (331), the second-grade crushing pieces (34) and the first-grade crushing pieces (33) are sequentially distributed on the rotating drum (32) along the longitudinal direction. The third-grade crushing pieces (331) correspond to the hopper (35).

8. The tea leaf classification pulverizing device according to claim 7, characterized in that: The third-stage crushing element (331) is spirally mounted on the rotating drum (32).

9. The tea leaf classification pulverizing device according to claim 7, characterized in that: The second-stage crushing element (34) comprises a plurality of second-stage crushing rods which are circumferentially distributed on the circumferential surface of the rotating drum (32) at intervals, and each second-stage crushing rod intersects with the axis of the rotating drum (32) at an angle α, 0<α≤30°.

10. The tea leaf grading pulverizing device according to claim 7, characterized in that: The first-stage crushing element (33) comprises a plurality of first-stage crushing rods, which are circumferentially distributed on the circumferential surface of the rotating drum (32) at intervals, and each first-stage crushing rod intersects with the axis of the rotating drum (32), and the angle formed by the intersection is β, 5°≤β≤50°.

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