Conveying device for tea production

Abstract

The invention relates to the technical field of conveying, and particularly discloses a conveying device for tea production, which comprises a bent conveying section and a straight conveying section which are connected with each other, the middle unit is arranged at the joint of the straight conveying section and the bent conveying section; the uniform spreading unit is arranged in the middle cabin; the distribution unit is arranged at the discharging opening of the middle bin; the tea leaves at the outlet of the bent conveying section are loaded in the middle through the middle unit, and no matter which side the tea leaves at the outlet of the bent conveying section deviate and accumulate towards, the tea leaves in the middle bin can be horizontally and uniformly spread through the uniform spreading unit moving in a reciprocating mode, so that the uniformity of the tea leaves distributed in all areas of the bottom layer of the middle bin tends to be consistent; according to the invention, the tea leaves subjected to uniform spreading treatment are intermittently distributed by using the distribution unit which moves intermittently, and then the distributed tea leaves are transferred to the straight conveying section, so that the deviated tea leaves are corrected, and the uniformity of the tea leaves in each area of the straight conveying section is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of conveying technology, and more particularly to a conveying device for tea production. Background Art

[0002] In the production process of tea, the dried and screened tea leaves are transported to the packaging line for packaging by a conveying device. Due to the space limitations of the processing workshop, the conveying path of the conveying device inevitably has a turning section, and a curved conveyor belt is set corresponding to the turning section. When the tea leaves follow the curved conveyor belt to turn, if the curved conveyor belt turns too fast, the tea leaves will be pushed to the side with a larger turning radius of the curved conveyor belt due to the centrifugal force, or when the curved conveyor belt turns relatively smoothly, the inner radius of the curved conveyor belt is smaller than the outer radius of the curved conveyor belt, causing the tea leaves to accumulate on the side with a smaller turning radius of the curved conveyor belt. In this way, the tea leaves transported to the straight conveying section by the curved conveyor belt are prone to deviation, resulting in inconsistent distribution uniformity of the tea leaves that finally reach the packaging line, affecting subsequent quantitative packaging. Summary of the invention

[0003] In order to overcome the above technical problems, the present invention proposes a conveying device for tea production.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A conveying device for tea production, comprising:

[0006] Curved conveying section;

[0007] A straight conveying section connected to the output end of the curved conveying section;

[0008] The middle unit is arranged at the junction of the straight conveying section and the curved conveying section, and comprises a middle bin and a bearing plate fixed to the bottom of the middle bin, the height of the bearing plate gradually decreases on the side away from the curved conveying section, and a discharge port is provided on the side of the middle bin away from the curved conveying section;

[0009] A spreading unit is arranged in the middle bin and comprises a horizontally movable transverse frame on which a plurality of spreading plates are evenly distributed;

[0010] The distribution unit is arranged at the discharge port, and comprises a rotatable distribution cylinder, wherein a plurality of distribution partitions are evenly distributed in the circumference of the distribution cylinder, and a distribution cavity is formed between adjacent distribution partitions;

[0011] The driving unit comprises a reciprocating driving member for driving the spreading unit and an intermittent driving member for driving the distributing unit.

[0012] As a further solution of the present invention: a plurality of central partitions are arranged at equal intervals in the central bin, and a uniform distribution cavity connected to the discharge port is formed between adjacent central partitions, and the uniform distribution plate is located above the central partition;

[0013] In the vertical direction, a gap is provided between the spreading plate and the middle partition; in the horizontal direction, an angle exists between the spreading plate and the middle partition.

[0014] As a further solution of the present invention: an arc-shaped sealing plate adapted to the discharge port is slidably installed on the supporting plate; an arc-shaped through groove is opened on the side wall of the central bin, a sliding rod that movably passes through the arc-shaped through groove is installed on one side of the arc-shaped sealing plate, and a plurality of lifting parts adapted to the sliding rod are arranged on the distribution cylinder.

[0015] As a further solution of the present invention: the lifting member includes a telescopic cavity opened on the distribution cylinder, a telescopic magnetic rod is movably embedded in the telescopic cavity, and a spring abutting against the telescopic magnetic rod is arranged in the telescopic cavity.

[0016] As a further solution of the present invention: a magnetic block adapted to the telescopic magnetic rod is installed on the side wall of the central compartment, and the magnetic poles of the magnetic block and the telescopic magnetic rod on the side close to each other are opposite; a ring is rotatably installed on the sliding rod and is in rolling contact with the telescopic magnetic rod.

[0017] As a further solution of the present invention: an elastic cable is connected between the upper end of the arc-shaped sealing plate and the bearing plate, and the elastic cable is located in the corresponding matching cavity.

[0018] As a further solution of the present invention: the reciprocating drive member includes a drive motor vertically fixed to one side of the middle compartment and a main drive shaft connected to the output end of the drive motor, an eccentric rod is connected to the main drive shaft, and a lever is vertically fixed to one end of the eccentric rod away from the main drive shaft;

[0019] A spreading drive shaft that movably passes through the center bin is horizontally mounted on the transverse frame, a guide plate is arranged at the end of the spreading drive shaft, a waist-shaped through groove is provided in the guide plate, and the shifting rod is movably embedded in the waist-shaped through groove.

[0020] As a further solution of the present invention: the intermittent driving member comprises a secondary driving shaft which is horizontally rotatably mounted, the secondary driving shaft is provided with a worm gear, and the main driving shaft is provided with a worm gear which is adapted to the worm gear;

[0021] A distribution drive shaft is coaxially fixed on the distribution cylinder, and an intermittent follower block is arranged on the distribution drive shaft. A plurality of intermittent slide grooves are opened on the circumferential direction of the intermittent follower block, and the number of the intermittent slide grooves is consistent with the number of the distribution chambers;

[0022] The auxiliary driving shaft is provided with a driving block adapted to the intermittent driven block, the driving block is eccentrically provided with a push rod adapted to the intermittent slide groove, and an arc surface adapted to the outer contour of the driving block is provided between adjacent intermittent slide grooves.

[0023] As a further solution of the present invention: the curved conveying section includes a curved conveying frame and a curved conveying belt arranged in the curved conveying frame, and a guide roller and a tensioning roller adapted to the curved conveying belt are rotatably installed in the curved conveying frame, and a curved driving shaft is coaxially fixed to one end of the tensioning roller;

[0024] The straight conveying section comprises a straight conveying frame and a straight conveying belt arranged in the straight conveying frame, and straight driving rollers adapted to the straight conveying belt are rotatably mounted at both ends of the straight conveying frame;

[0025] A conveying motor is fixedly mounted on the curved conveying frame, a curved section transmission belt is connected between the output end of the conveying motor and the curved driving shaft, and a straight section transmission belt is connected between the output end of the conveying motor and the straight driving roller.

[0026] As a further solution of the present invention: the tension roller comprises a tapered roller body, and the diameter of the tapered roller body gradually decreases toward one end inside the curved conveyor belt;

[0027] A hollow rotating shaft is arranged at one end of the conical roller body, an air cavity connected to the hollow rotating shaft is opened in the conical roller body, a plurality of telescopic sliding grooves connected to the air cavity are opened on the circumferential direction of the conical roller body, a telescopic plate is slidably installed in the telescopic sliding groove, and one end of the telescopic plate radially extending out of the telescopic sliding groove is connected to a tensioning plate;

[0028] An air pump is installed on the curved conveying frame, and a sealing sleeve is connected to the output end of the air pump. The sealing sleeve is rotatably and sealingly connected to the hollow rotating shaft.

[0029] Beneficial effects of the present invention:

[0030] In the present invention, a center unit is used to perform center loading on the tea leaves at the outlet of the curved conveying section. No matter which side the tea leaves at the outlet of the curved conveying section deviate to and accumulate, the tea leaves in the center bin can be horizontally spread evenly by the reciprocating spreading unit, so that the uniformity of the tea leaves distributed in various areas of the bottom layer of the center bin tends to be consistent. In addition, the present invention also uses an intermittent distribution unit to intermittently distribute the tea leaves after the spreading treatment, and then transfers the distributed tea leaves to the straight conveying section to correct the deviated tea leaves, thereby effectively improving the uniformity of the tea leaves in various areas of the straight conveying section and facilitating subsequent quantitative packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0033] Figure 2 A three-dimensional schematic diagram of another viewing angle of the present invention;

[0034] Figure 3 It is a position distribution diagram of the central unit, the spreading unit and the distribution unit of the present invention;

[0035] Figure 4 It is a partial structural schematic diagram of the central unit, the spreading unit and the distribution unit of the present invention;

[0036] Figure 5 is a cross-sectional view of the central unit and the distribution unit of the present invention;

[0037] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0038] Figure 7 It is a structural schematic diagram of the central unit of the present invention;

[0039] Figure 8 is a top view of the central unit of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the central bin and the distribution cylinder of the present invention;

[0041] Fig.10 for Fig. 9 Enlarged view of point B in the middle;

[0042] Fig.11 It is a schematic diagram of the structure of the dispensing tube of the present invention;

[0043] Fig.12 for Fig.11 Enlarged view of point C in the middle;

[0044] Fig.13 is a schematic diagram of the position of the driving unit of the present invention;

[0045] Fig.14 for Fig.13 Enlarged view of point D in the middle;

[0046] Fig.15 It is a structural schematic diagram of the curved conveying section of the present invention;

[0047] Fig.16 It is a structural schematic diagram of the curved conveying section of the present invention from another perspective;

[0048] Fig.17 It is a schematic diagram of the internal structure of the tensioning roller of the present invention.

[0049] In the figure:

[0050] 100, curved conveying section; 101, conveying motor; 102, curved section transmission belt; 103, straight section transmission belt; 110, curved conveying frame; 120, curved conveying belt; 130, guide roller; 140, curved driving shaft; 150, tensioning roller; 151, tapered roller body; 152, hollow rotating shaft; 153, air cavity; 154, telescopic slide; 155, telescopic plate; 156, tensioning plate; 160, air pump; 161, sealing sleeve;

[0051] 200, straight conveying section; 210, straight conveying frame; 220, straight driving roller; 230, straight conveying belt;

[0052] 300, center unit; 310, center bin; 311, arc-shaped through slot; 312, magnetic block; 320, bearing plate; 330, center partition; 340, discharge port; 350, uniform distribution cavity; 360, arc-shaped sealing plate; 361, slide rod; 362, collar; 370, elastic cable;

[0053] 400, spreading unit; 410, transverse frame; 420, spreading plate; 430, spreading drive shaft;

[0054] 500, distribution unit; 510, distribution cylinder; 511, lifting member; 5111, telescopic chamber; 5112, telescopic magnetic rod; 5113, spring; 520, distribution partition; 530, distribution chamber; 540, distribution drive shaft;

[0055] 600, driving unit; 610, driving motor; 620, main driving shaft; 621, eccentric rod; 622, lever; 623, guide plate; 624, worm; 630, auxiliary driving shaft; 631, worm wheel; 632, driving block; 633, push rod; 634, intermittent driven block; 635, arc surface; 636, intermittent slide groove. DETAILED DESCRIPTION

[0056] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0057] See also Figure 1 and Figure 2The present invention discloses a conveying device for tea production, comprising a curved conveying section 100, a straight conveying section 200, a central unit 300, a spreading unit 400, a distribution unit 500 and a driving unit 600; the straight conveying section 200 is connected to the output end of the curved conveying section 100;

[0058] See also Figure 3 , Figure 4 and Figure 5 The middle unit 300 is arranged at the junction of the straight conveying section 200 and the curved conveying section 100, and includes a middle bin 310 and a carrying plate 320 fixed to the bottom of the middle bin 310. The height of the carrying plate 320 gradually decreases on the side away from the curved conveying section 100. A discharge port 340 is opened on the side of the middle bin 310 away from the curved conveying section 100.

[0059] The spreading unit 400 is disposed in the middle bin 310, and includes a horizontally movable transverse frame 410, on which a plurality of spreading plates 420 are evenly distributed;

[0060] The distribution unit 500 is disposed at the discharge port 340 and includes a rotatable distribution cylinder 510. A plurality of distribution partitions 520 are evenly distributed in the circumferential direction of the distribution cylinder 510, and a distribution cavity 530 is formed between adjacent distribution partitions 520.

[0061] The driving unit 600 includes a reciprocating driving member for driving the spreading unit 400 and an intermittent driving member for driving the distributing unit 500;

[0062] Specifically, when the tea leaves pass through the curved conveying section 100, the tea leaves gradually deviate to one side. When the tea leaves reach the output end of the curved conveying section 100, the tea leaves are piled up on the deviated side, and then fall into the middle bin 310, resulting in deviations in the heights of the tea leaves piled up in different areas of the middle bin 310. The reciprocating drive member drives the transverse moving frame 410 in the middle bin 310 to move back and forth, thereby driving the spreading plate 420 to move the tea leaves in the middle bin 310 back and forth in the horizontal direction, so that the tea leaves with higher piles are transferred to the areas with lower piles, until the heights of the tea leaves piled up in various areas of the middle bin 310 tend to be consistent.

[0063] At the same time, the intermittent driving component drives the distribution cylinder 510 to rotate intermittently, so that each distribution chamber 530 is intermittently connected with the discharge port 340 of the central bin 310 in turn, so that the tea leaves in the central bin 310 that have been evenly spread are discharged into the corresponding distribution chamber 530, and then the distribution chamber 530 filled with tea leaves is driven by the intermittent driving component to rotate toward the side of the straight conveying section 200, and the filled and distributed tea leaves are poured into the straight conveying section 200, so as to realize the intermittent distribution of tea leaves and improve the uniformity of distribution of tea leaves in various areas after distribution.

[0064] It should be noted that, in the present invention, the center unit 300 is used to perform center loading on the tea leaves at the outlet of the curved conveying section 100. No matter which side the tea leaves at the outlet of the curved conveying section 100 deviate to and accumulate, the tea leaves in the center bin 310 can be horizontally spread by the reciprocating spreading unit 400, so that the uniformity of the tea leaves distributed in various areas of the bottom layer of the center bin 310 tends to be consistent. In addition, the present invention also utilizes an intermittent distribution unit 500 to intermittently distribute the tea leaves after the spreading treatment, and then transfers the distributed tea leaves to the straight conveying section 200 to correct the deviated tea leaves, thereby effectively improving the uniformity of the tea leaves in various areas of the straight conveying section 200 and facilitating the subsequent quantitative packaging.

[0065] In one embodiment, see Figure 5 , Figure 6 and Figure 7 In order to further improve the effect of spreading the tea leaves evenly, a plurality of central partitions 330 are equidistantly arranged in the central bin 310, and a distribution cavity 350 connected to the discharge port 340 is formed between adjacent central partitions 330, and the distribution plate 420 is located above the central partition 330; specifically, the tea leaves at the outlet of the curved conveying section 100 fall into each distribution cavity 350 in the central bin 310, and because the tea leaves are offset and accumulated to one side, the accumulation heights of the tea leaves in different distribution cavities 350 are also different, and the distribution plate 420 above the distribution cavity 350 is used to reciprocate the tea leaves in the central bin 310, so that the distribution plate 420 is used to transfer the tea leaves in the distribution cavity 350 with a larger accumulation amount to the distribution cavity 350 with a smaller accumulation amount, until the accumulation amount of tea leaves in each distribution cavity 350 tends to be consistent;

[0066] It should be noted that the distribution partition 520 can be set to divide the central bin 310 into a plurality of distribution chambers 350, thereby dividing the tea leaves in the horizontal direction. When the tea leaves are pushed by the spreading plate 420, the independently distributed distribution chambers 350 can avoid secondary displacement of the tea leaves, thereby effectively improving the spreading efficiency of the tea leaves.

[0067] Furthermore, in order to prevent the spreading plate 420 from contacting the middle partition 330 during the reciprocating horizontal movement and causing the tea leaves to be squeezed and crushed, a gap is provided between the spreading plate 420 and the middle partition 330 in the vertical direction; the specific size of the gap is not limited, and can be 3-5 mm, which can prevent the spreading plate 420 from directly contacting the middle partition 330 and ensure that the tea leaves overflowing from the top of the distribution cavity 350 can be smoothly pushed into other distribution cavities 350 that have not been filled;

[0068] Also, see Figure 8Taking into account the evenly distributing effect of the spreading plate 420, in the horizontal direction, there is an angle between the spreading plate 420 and the central partition 330; the specific value of the angle is not limited, and can be 15-30°, so as to avoid the spreading plate 420 and the central partition 330 being distributed in parallel, so that when the spreading plate 420 moves horizontally relative to the central partition 330, the spreading plate 420 always has only one intersection with the central partition 330, which greatly reduces the shearing area between the spreading plate 420 and the central partition 330, thereby avoiding the tea leaves from being frequently sheared and crushed.

[0069] Furthermore, considering that during the intermittent movement of the distribution cylinder 510, when the distribution chamber 530 filled with tea leaves rotates out from the discharge port 340, the next empty distribution chamber 530 has not yet been completely connected with the discharge port 340, resulting in the temporary loss of the blocking effect of the discharge port 340, and then causing the tea leaves in the middle chamber 310 to overflow from the discharge port 340, which is likely to cause the loss of tea leaves; for this reason, please refer to Fig. 9 and Fig.10 The carrying plate 320 is slidably mounted with an arc-shaped sealing plate 360 ​​adapted to the discharge port 340; the side wall of the middle bin 310 is provided with an arc-shaped through groove 311, and a slide bar 361 movably penetrating the arc-shaped through groove 311 is mounted on one side of the arc-shaped sealing plate 360, and the distribution cylinder 510 is provided with a plurality of lifting members 511 adapted to the slide bar 361;

[0070] Specifically, when the intermittent driving member drives the distribution barrel 510 to rotate, the distribution chamber 530 filled with tea leaves begins to rotate out from the discharge port 340. At this time, the corresponding lifting member 511 on the distribution barrel 510 pushes up the slide bar 361 from the bottom of the arc-shaped sealing plate 360, so that the arc-shaped sealing plate 360 ​​slides upward, and the slide bar 361 moves synchronously along the arc-shaped through groove 311 to gradually block the discharge port 340, so as to prevent the tea leaves in the middle chamber 310 from accidentally overflowing before the next empty distribution chamber 530 is fully aligned with the discharge port 340.

[0071] When the next unloaded distribution chamber 530 is completely aligned with the discharge port 340, the lifting member 511 is disengaged from the slide rod 361 on the arc-shaped sealing plate 360, and the arc-shaped sealing plate 360 ​​can slide downward and reset under the action of its own gravity, thereby opening the discharge port 340 again, and the unloaded distribution chamber 530 can be filled with tea leaves.

[0072] See also Fig.11 and Fig.12 The lifting member 511 includes a telescopic cavity 5111 opened on the distribution cylinder 510, a telescopic magnetic rod 5112 is movably embedded in the telescopic cavity 5111, and a spring 5113 abutting against the telescopic magnetic rod 5112 is arranged in the telescopic cavity 5111;

[0073] In the initial state, due to the elastic force of the spring 5113, the telescopic magnetic rod 5112 is always in an extended state, so that the telescopic magnetic rod 5112 can contact the sliding rod 361 on the arc-shaped sealing plate 360 ​​when rotating, so as to drive the arc-shaped sealing plate 360 ​​to move upward; when the arc-shaped sealing plate 360 ​​completely blocks the discharge port 340, the distribution chamber 530 filled with tea leaves is just completely rotated out, and the empty distribution chamber 530 is just completely aligned with the discharge port 340. At this time, the telescopic magnetic rod 5112 is retracted into the telescopic chamber 5111, so that the telescopic magnetic rod 5112 can be separated from the sliding rod 361, thereby realizing the automatic reset of the arc-shaped sealing plate 360;

[0074] See also Fig. 9 and Fig.10 In order to prevent the telescopic magnetic rod 5112 from being separated from the sliding rod 361, a magnetic block 312 adapted to the telescopic magnetic rod 5112 is installed on the side wall of the middle compartment 310, and the magnetic poles of the magnetic block 312 and the telescopic magnetic rod 5112 on the side close to each other are opposite; a ring 362 in rolling contact with the telescopic magnetic rod 5112 is rotatably installed on the sliding rod 361;

[0075] Specifically, when the unloaded distribution chamber 530 rotates to be completely aligned with the discharge port 340, the telescopic magnetic rod 5112 just rotates to the magnetic block 312. Since the magnetic block 312 and the telescopic magnetic rod 5112 have opposite polarities, a repulsive force is generated on the telescopic magnetic rod 5112, causing the telescopic magnetic rod 5112 to retract into the telescopic chamber 5111. In addition, a ring 362 is rotatably installed on the slide bar 361, which is in rolling contact with the telescopic magnetic rod 5112, thereby effectively reducing the friction resistance between the telescopic magnetic rod 5112 and the ring 362, so that the telescopic magnetic rod 5112 can be smoothly retracted into the telescopic chamber 5111 to achieve the separation of the lifting member 511 and the slide bar 361.

[0076] See also Figure 5 and Figure 6 Considering that the tea leaves filled in the middle chamber 310 will exert a lateral squeezing force on the arc-shaped sealing plate 360 ​​during the self-resetting process of the arc-shaped sealing plate 360, thereby increasing the resistance of the arc-shaped sealing plate 360 ​​to slide down and reset, an elastic cable 370 is connected between the upper end of the arc-shaped sealing plate 360 ​​and the bearing plate 320, and the elastic cable 370 is located in the corresponding uniform matching cavity 350;

[0077] When the lifting member 511 pushes the arc-shaped sealing plate 360 ​​to slide upward, the elastic cable 370 is stretched and deformed; when the lifting member 511 is separated from the arc-shaped sealing plate 360, the elastic cable 370 generates an inclined downward pulling force on the arc-shaped sealing plate 360, and the pulling force can overcome the lateral squeezing force generated by the tea leaves on the arc-shaped sealing plate 360, so that the arc-shaped sealing plate 360 ​​can slide down smoothly and reset;

[0078] It is worth noting that due to the deformable characteristics of the elastic cable 370 itself, when the elastic cable 370 pulls the arc-shaped sealing plate 360 ​​to slide down and reset, the elastic cable 370 itself also produces elastic contraction and passes through the gap between the tea leaves in the corresponding distribution chamber 350, thereby breaking the static equilibrium state of the accumulated tea leaves in the distribution chamber 350 and avoiding the clogging of the tea leaves at the discharge port 340. At the same time, when the arc-shaped sealing plate 360 ​​slides down into place, the elastic cable 370 can hit the bottom supporting plate 320, thereby causing the supporting plate 320 to vibrate, further enhancing the disturbance effect on the tea leaves in the distribution chamber 350, and prompting the tea leaves to quickly fill the empty distribution chamber 530.

[0079] In yet another embodiment, see Fig.13 and Fig.14 The reciprocating drive member includes a drive motor 610 vertically fixed to one side of the central bin 310 and a main drive shaft 620 connected to the output end of the drive motor 610, an eccentric rod 621 is connected to the main drive shaft 620, and a lever 622 is vertically fixed to one end of the eccentric rod 621 away from the main drive shaft 620; a spreading drive shaft 430 movably penetrating the central bin 310 is horizontally mounted on the transverse frame 410, a guide plate 623 is arranged at the end of the spreading drive shaft 430, a waist-shaped through groove is provided in the guide plate 623, and the lever 622 is movably embedded in the waist-shaped through groove;

[0080] Specifically, the driving motor 610 drives the main driving shaft 620 to rotate, so that the lever 622 makes a circular motion with the main driving shaft 620 as the axis, thereby driving the guide plate 623 to reciprocate horizontally. The lever 622 also slides adaptively in the oval through groove, thereby driving the transverse frame 410 and the spreading plate 420 to reciprocate through the spreading drive shaft 430, so as to achieve the reciprocating spreading effect of the spreading unit 400 on the tea leaves.

[0081] For further information, see Fig.14 The intermittent drive member includes a sub-drive shaft 630 which is horizontally rotatably mounted, a worm gear 631 is arranged on the sub-drive shaft 630, and a worm 624 which is adapted to the worm gear 631 is arranged on the main drive shaft 620; a distribution drive shaft 540 is coaxially fixed to the distribution barrel 510, an intermittent follower block 634 is arranged on the distribution drive shaft 540, a plurality of intermittent chute 636 are circumferentially opened on the intermittent follower block 634, and the number of the intermittent chute 636 is consistent with the number of the distribution chamber 530; a drive block 632 which is adapted to the intermittent follower block 634 is arranged on the sub-drive shaft 630, a push rod 633 which is adapted to the intermittent chute 636 is eccentrically arranged on the drive block 632, and an arc surface 635 which is adapted to the outer contour of the drive block 632 is arranged between adjacent intermittent chute 636;

[0082] Specifically, when the main drive shaft 620 rotates, the meshing transmission of the worm 624 and the worm wheel 631 drives the auxiliary drive shaft 630 to rotate synchronously, and then drives the drive block 632 to rotate synchronously. When the push rod 633 on the drive block 632 is transferred into the corresponding intermittent slide groove 636 of the intermittent driven block 634, the intermittent driven block 634 is driven to rotate by the push rod 633, thereby driving the distribution drive shaft 540 and the distribution cylinder 510 to rotate intermittently; when the push rod 633 on the drive block 632 is rotated out of the corresponding intermittent slide groove 636, the drive block 632 rotates and fits with the arc surface 635 of the intermittent driven block 634, and the intermittent driven block 634 does not move at this time; in this way, the intermittent movement of the intermittent driven block 634 can be realized, thereby driving the distribution cylinder 510 to periodically fill and discharge tea leaves.

[0083] It is worth noting that the intermittent drive member uses a worm wheel 631 and a worm 624 to transmit the main drive shaft 620 and the auxiliary drive shaft 630. On the one hand, the transmission of the worm wheel 631 and the worm 624 can effectively reduce the transmission ratio. In this way, even if the rotation speed of the main drive shaft 620 is faster to meet the high frequency requirement of the reciprocating spreading treatment of the spreading unit 400, the rotation speed of the auxiliary drive shaft 630 is lower after reducing the transmission ratio, so that the intermittent motion cycle of the distribution cylinder 510 is kept within a suitable range; on the other hand, due to the reverse self-locking characteristics of the worm wheel 631 and the worm 624, the distribution cylinder 510 can be reversely locked to prevent the distribution cylinder 510 from accidentally rotating in the opposite direction and causing the tea leaves in the distribution chamber 530 to dump to the outside of the straight conveying section 200, thereby improving the overall stability of the distribution unit 500.

[0084] In further embodiments, see Fig.15 and Fig.16 The curved conveying section 100 includes a curved conveying frame 110 and a curved conveying belt 120 disposed in the curved conveying frame 110. A guide roller 130 and a tensioning roller 150 adapted to the curved conveying belt 120 are rotatably installed in the curved conveying frame 110. A curved driving shaft 140 is coaxially fixed to one end of the tensioning roller 150.

[0085] See also Figure 4 The straight conveying section 200 includes a straight conveying frame 210 and a straight conveying belt 230 disposed in the straight conveying frame 210. Straight driving rollers 220 adapted to the straight conveying belt 230 are rotatably mounted at both ends of the straight conveying frame 210.

[0086] See also Figure 2 A conveying motor 101 is fixedly mounted on the curved conveying frame 110, a curved section transmission belt 102 is connected between the output end of the conveying motor 101 and the curved driving shaft 140, and a straight section transmission belt 103 is connected between the output end of the conveying motor 101 and the straight driving roller 220;

[0087] Specifically, under the transmission action of the curved section transmission belt 102 and the straight section transmission belt 103, the conveying motor 101 synchronously drives the curved driving shaft 140 and the straight driving roller 220, thereby realizing the synchronous movement of the curved conveyor belt 120 and the straight conveyor belt 230, so as to realize the continuous conveyance of tea leaves;

[0088] Furthermore, considering that the inner circumference of the curved conveyor belt 120 is smaller than the outer circumference of the curved conveyor belt 120, if the tension roller 150 and the curved conveyor belt 120 are not well fitted, it is easy to cause the upper belt surface of the curved conveyor belt 120 to wrinkle or tilt, thereby aggravating the deviation of the tea leaves on the curved conveyor belt 120. For this reason, please refer to Fig.16 and Fig.17 The tensioning roller 150 includes a tapered roller body 151, and the diameter of the tapered roller body 151 gradually decreases at one end thereof toward the inner side of the curved conveyor belt 120; a hollow rotating shaft 152 is arranged at one end of the tapered roller body 151, and an air cavity 153 connected to the hollow rotating shaft 152 is provided in the tapered roller body 151, and a plurality of telescopic slide grooves 154 connected to the air cavity 153 are provided circumferentially on the tapered roller body 151, and a telescopic plate 155 is slidably installed in the telescopic slide groove 154, and one end of the telescopic plate 155 radially extending out of the telescopic slide groove 154 is connected to a tensioning plate 156; an air pump 160 is installed on the curved conveyor frame 110, and a sealing sleeve 161 is connected to the output end of the air pump 160, and the sealing sleeve 161 is rotatably and sealedly connected to the hollow rotating shaft 152;

[0089] Specifically, air is blown into the sealing sleeve 161 through the air pump 160, and the gas enters the air cavity 153 of the conical roller body 151 through the hollow rotating shaft 152, thereby increasing the air pressure in the air cavity 153, pushing each telescopic plate 155 to slide radially along the corresponding telescopic slide groove 154, and then driving each tensioning plate 156 to expand radially outward, so that the tensioning plate 156 is tightly fitted with the curved conveyor belt 120, thereby tightening and straightening the curved conveyor belt 120, avoiding the phenomenon of tilting and wrinkling on the belt surface of the curved conveyor belt 120.

[0090] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A conveying device for tea production, comprising a curved conveying section (100) and a straight conveying section (200) connected to the output end of the curved conveying section (100); characterized in that: Also includes: A center unit (300) is arranged at the junction of the straight conveying section (200) and the curved conveying section (100), comprising a center bin (310) and a bearing plate (320) fixed to the bottom of the center bin (310), wherein the height of the bearing plate (320) gradually decreases on a side away from the curved conveying section (100), and a discharge port (340) is provided on a side of the center bin (310) away from the curved conveying section (100); A spreading unit (400) is disposed in the middle bin (310), and comprises a horizontally movable transverse frame (410), wherein a plurality of spreading plates (420) are evenly distributed on the transverse frame (410); A distribution unit (500) is arranged at the discharge port (340), comprising a rotatable distribution cylinder (510), wherein a plurality of distribution partitions (520) are evenly distributed in the circumferential direction of the distribution cylinder (510), and a distribution cavity (530) is formed between adjacent distribution partitions (520); The driving unit (600) comprises a reciprocating driving member for driving the spreading unit (400) and an intermittent driving member for driving the distributing unit (500).

2. A conveying device for tea production according to claim 1, characterized in that: A plurality of central partitions (330) are arranged at equal intervals in the central bin (310), and a distribution cavity (350) communicating with the discharge port (340) is formed between adjacent central partitions (330), and the distribution plate (420) is located above the central partitions (330); In the vertical direction, a gap is provided between the spreading plate (420) and the middle partition (330); in the horizontal direction, an angle exists between the spreading plate (420) and the middle partition (330).

3. A conveying device for tea production according to claim 2, characterized in that: An arc-shaped sealing plate (360) adapted to the discharge port (340) is slidably mounted on the support plate (320); an arc-shaped through groove (311) is provided on the side wall of the central bin (310); a sliding rod (361) movably penetrating the arc-shaped through groove (311) is mounted on one side of the arc-shaped sealing plate (360); and a plurality of lifting members (511) adapted to the sliding rod (361) are arranged on the distribution cylinder (510).

4. A conveying device for tea production according to claim 3, characterized in that: The lifting member (511) comprises a telescopic cavity (5111) opened on the distribution cylinder (510), a telescopic magnetic rod (5112) being movably embedded in the telescopic cavity (5111), and a spring (5113) abutting against the telescopic magnetic rod (5112) being arranged in the telescopic cavity (5111).

5. A conveying device for tea production according to claim 4, characterized in that: A magnetic block (312) adapted to the telescopic magnetic rod (5112) is mounted on the side wall of the central compartment (310); the magnetic poles of the magnetic block (312) and the telescopic magnetic rod (5112) being close to each other are opposite; and a collar (362) is rotatably mounted on the slide rod (361) and in rolling contact with the telescopic magnetic rod (5112).

6. A conveying device for tea production according to claim 3, characterized in that: An elastic cable (370) is connected between the upper end of the arc-shaped sealing plate (360) and the bearing plate (320), and the elastic cable (370) is located in the corresponding matching cavity (350).

7. A conveying device for tea production according to claim 1, characterized in that: The reciprocating drive member comprises a drive motor (610) vertically fixed to one side of the central bin (310) and a main drive shaft (620) connected to an output end of the drive motor (610); an eccentric rod (621) is connected to the main drive shaft (620); and a shift rod (622) is vertically fixed to one end of the eccentric rod (621) away from the main drive shaft (620); A spreading drive shaft (430) is horizontally mounted on the transverse moving frame (410) and movably penetrates the central bin (310). A guide plate (623) is disposed at the end of the spreading drive shaft (430). A waist-shaped through groove is formed in the guide plate (623), and the shifting rod (622) is movably embedded in the waist-shaped through groove.

8. A conveying device for tea production according to claim 7, characterized in that: The intermittent driving member comprises a secondary driving shaft (630) mounted for horizontal rotation, the secondary driving shaft (630) being provided with a worm gear (631), and the main driving shaft (620) being provided with a worm (624) adapted to the worm gear (631); A distribution drive shaft (540) is coaxially fixed to the distribution cylinder (510), an intermittent follower block (634) is provided on the distribution drive shaft (540), a plurality of intermittent slide grooves (636) are circumferentially formed on the intermittent follower block (634), and the number of the intermittent slide grooves (636) is the same as the number of the distribution chambers (530); The auxiliary drive shaft (630) is provided with a driving block (632) adapted to the intermittent driven block (634), the driving block (632) is eccentrically provided with a push rod (633) adapted to the intermittent slide groove (636), and an arc surface (635) adapted to the outer contour of the driving block (632) is provided between adjacent intermittent slide grooves (636).

9. A conveying device for tea production according to claim 1, characterized in that: The curved conveying section (100) comprises a curved conveying frame (110) and a curved conveying belt (120) arranged in the curved conveying frame (110); a guide roller (130) and a tensioning roller (150) adapted to the curved conveying belt (120) are also rotatably mounted in the curved conveying frame (110); a curved driving shaft (140) is coaxially fixed to one end of the tensioning roller (150); The straight conveying section (200) comprises a straight conveying frame (210) and a straight conveying belt (230) arranged in the straight conveying frame (210); straight driving rollers (220) adapted to the straight conveying belt (230) are rotatably mounted at both ends of the straight conveying frame (210); A conveying motor (101) is fixedly mounted on the curved conveying frame (110); a curved section transmission belt (102) is connected between the output end of the conveying motor (101) and the curved drive shaft (140); and a straight section transmission belt (103) is connected between the output end of the conveying motor (101) and the straight drive roller (220).

10. A conveying device for tea production according to claim 9, characterized in that: The tensioning roller (150) comprises a tapered roller body (151), wherein the diameter of the tapered roller body (151) gradually decreases at one end thereof facing the inner side of the curved conveyor belt (120); A hollow rotating shaft (152) is arranged at one end of the conical roller body (151), an air cavity (153) in communication with the hollow rotating shaft (152) is provided in the conical roller body (151), a plurality of telescopic sliding grooves (154) in communication with the air cavity (153) are provided circumferentially on the conical roller body (151), a telescopic plate (155) is slidably installed in the telescopic sliding groove (154), and one end of the telescopic plate (155) radially extending out of the telescopic sliding groove (154) is connected to a tensioning plate (156); An air pump (160) is installed on the curved conveying frame (110); an output end of the air pump (160) is connected to a sealing sleeve (161); and the sealing sleeve (161) is rotatably sealedly connected to the hollow rotating shaft (152).

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