A tea leaf fixing and straightening machine

Abstract

The present invention discloses a tea fixation and shaping machine, which comprises a frame, a group of cylindrical drums obliquely installed on the frame, a tea feeding device arranged on one side of the cylindrical drums, a heating device arranged below the cylindrical drums, and a driving mechanism for driving the cylindrical drums to rotate; a group of convex ribs are arranged inside the cylindrical drums. The diameter of the cylindrical drum is 140 - 160 mm, and the height of the convex ribs is 8 - 12 mm. The present invention uses the structure of the cylindrical drum to fix and shape the tea, which can reduce heat loss, ensure the temperature uniformity inside the cylindrical drum, avoid the problem of tea scorching at the edges due to too high temperature of the drum wall while ensuring fixation, has good fixation and shaping effect, and has a simple structure and low cost, and can be widely applied to the field of tea fixation and shaping.

Description

Technical Field

[0001] The present invention relates to the field of tea machinery, and particularly to a tea withering and shaping machine. Background Art

[0002] During the frying process of tea, especially for flat tea (Longjing tea) and needle-shaped tea (Silver Needle tea) in green tea, two key processes of withering and shaping must be passed through. Traditional tea frying is generally completed by hand in a round pot for the withering and shaping processes, with high labor intensity and technical difficulty. To solve this problem, existing withering and shaping machines, such as a tea automatic withering and shaping machine and its withering and shaping method disclosed in Chinese Patent Application No. 2007100702108, the tea automatic withering and shaping machine consists of a frame, a reciprocating swing multi-groove pot arranged on the frame, a heating device arranged under the multi-groove pot, etc. The withering and shaping processes of tea are combined into one and continuously completed in the multi-groove pot. The cross-section of the multi-groove pot is a U-shaped structure, with raised ribs at the bottom. A cover plate is arranged above the withering area of the multi-groove pot, and several heating devices and temperature control devices whose temperatures are adapted to the withering and shaping of tea are arranged under the multi-groove pot. This structure is an open multi-groove pot. When using this withering and shaping machine for withering and shaping, to achieve the withering effect, a relatively high withering temperature is required. Due to the fast heat dissipation speed of the open structure, therefore, the heating temperature needs to be increased. However, if the heating temperature is too high, the tea contacting the multi-groove pot will cause the problem of scorched edges. If the heating temperature is low, the withering effect cannot be achieved. In addition, this withering and shaping machine controls the movement and shaping of tea by vibration, with a complex structure and an uncontrollable shaping process. Summary of the Invention

[0003] The object of the present invention is to provide a tea withering and shaping machine to solve the problems of complex structure and poor withering and shaping effects of existing tea withering and shaping machines.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a tea withering and shaping machine, including a frame, a group of cylindrical drums inclinedly installed on the frame, a tea feeding device arranged on one side of the cylindrical drums, a heating device arranged under the cylindrical drums, and a driving mechanism for driving the cylindrical drums to rotate; a group of convex ribs are arranged inside the cylindrical drums.

[0005] Preferably, the diameter of the cylindrical drum is 140 - 160 mm, and the height of the convex ribs is 8 - 12 mm. <00ness of the convex ribs is 8 - 12 mm.

[0006] Further, the inclination angle of the cylindrical drum is 30° - 35°.

[0007] To ensure the heating effect and reduce heat loss, the heating device includes a heating base and a set of heating tubes inserted into the heating base. A set of rolling bearings is provided between the heating base and the cylindrical drum. The heating base is provided with side plates that extend upward to the same height as the cylindrical drum.

[0008] To facilitate the control of the rotation of the cylindrical drum, the drive mechanism includes a drive motor and a set of rotating shafts arranged below the cylindrical drum and corresponding to the cylindrical drum one by one. The rotating shafts are arranged in the same direction as the cylindrical drum. The rotating shafts are provided with coupling gears, first linkage gears, and second linkage gears. The cylindrical drum is provided with driven gears that drive the rotation of the cylindrical drum. A driven chain is provided between the coupling gears and the driven gears. A linkage drive chain is provided between the first linkage gear on one rotating shaft and the second linkage gear on the adjacent rotating shaft. The drive motor is provided with a driving gear, and a main drive chain is provided between the driving gear and the first linkage gear on one of the rotating shafts.

[0009] Further, the sizes of the coupling gears, the first linkage gears, and the second linkage gears are arranged in descending order.

[0010] As another specific solution of the drive mechanism, the drive mechanism includes a drive motor and a worm arranged horizontally below the cylindrical drum. The output shaft of the drive motor is provided with a driving gear, and the worm is provided with a worm linkage tooth. A worm drive chain is provided between the driving gear and the worm linkage tooth. The cylindrical drum is provided with a driven gear adapted to the worm.

[0011] To facilitate feeding, the tea leaf feeding device includes an inclined feeding hopper. The discharging end of the feeding hopper is provided with a set of tea discharging ports adapted to the cylindrical drum. The tea discharging ports are composed of two guiding ribs arranged in an "eight" shape, and the tea inlet ends of adjacent tea discharging ports are adjacent to each other.

[0012] Further, a vibration device for driving the feeding hopper to vibrate is provided below the feeding hopper.

[0013] Advantages of the present invention: By using an independent small cylindrical drum structure for fixing and shaping the tea leaves, the present invention can reduce the heat loss during fixing and shaping. The temperature inside the cylindrical drum is more balanced, and there will be no phenomenon that the temperature of the drum wall is too high while the temperature inside the drum is too low. While ensuring the required temperature for fixing, there will be no phenomenon of burnt edges. At the same time, by using a small cylindrical drum structure, during the fixing process, the aroma of the tea leaves will not be directly emitted into the air like in a U-shaped groove pan, which can reduce the loss of the tea leaf aroma and thus improve the aroma of the tea leaves. Through the inclined setting of the cylindrical drum and in combination with the convex ribs, the tea leaves are continuously turned and moved forward to achieve the purpose of fixing and shaping. It has good operating stability, and the fixing and shaping effects can be controlled by adjusting the inclination angle, rotation speed and heating temperature of the cylindrical drum. The structure is simple and the adjustment is convenient. The cylindrical drum adopts a linkage mode of a driving motor and a set of rotating shafts, which has the advantages of simple structure and low cost. While adopting a driving motor and a worm drive mode has the advantages of good transmission stability and high transmission accuracy.

[0014] The following will combine the accompanying drawings and embodiments to describe the present invention in more detail. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0016] Figure 2 It is a structure schematic of the driving mechanism in the present invention Figure 1 。

[0017] Figure 3 It is a three-dimensional structure schematic diagram of a single cylindrical drum in the present invention.

[0018] Figure 4 It is a structure schematic of the driving mechanism in the present invention Figure 2 。 Detailed Embodiments

[0019] Embodiment 1: As Figures 1 to 3As shown in the figure, a tea leaf withering and shaping machine is used to wither fresh tea leaves while completing the shaping process, making the withered tea leaves in a long strip shape. The tea leaf withering and shaping machine includes a frame 1 for support, a group of cylindrical drums 2 inclinedly installed on the frame 1, and a driving mechanism 4 for driving the cylindrical drums 2 to rotate; a tea leaf feeding device 5 for feeding fresh tea leaves into the cylindrical drums 2 is arranged above the front of the cylindrical drums 2, a heating device 3 for heating the cylindrical drums 2 is arranged below the cylindrical drums २, a group of convex ribs 21 are evenly distributed on the inner wall of the cylindrical drums 2, and the convex ribs 21 are arranged along the axial direction of the cylindrical drums 2 and extend from one end of the cylindrical drums 2 to the other end. To ensure the withering and shaping effect and at the same time take into account the withering and shaping speed, the diameter of the cylindrical drums 2 is 140 - 160 mm, and the height of the convex ribs 21 is 8 - 12 mm. The convex ribs 21 are evenly distributed in 4 on the inner wall of the cylindrical drums 2, and the cross-section of the convex ribs 21 is an arc-shaped structure. The inclination angle of the cylindrical drums 2 is 30° - 35°, which can be adjusted according to different tea leaves.

[0020] The heating device 3 includes a heating base 31, a group of heating tubes 32 inserted into the heating base 31, a group of rolling bearings 33 are arranged between the heating base 31 and the cylindrical drums 2, the heating base 31 is provided with side plates 34, and the side plates 34 extend upward to the same height as the cylindrical drums 2. The heating bases 31 are placed side by side on the frame 1, and all the heating bases 31 can be integrally formed or connected together by welding or bolt connection. The frame 1 includes a bottom plate 101, rotating wheels 102 are installed at the four corners of the bottom plate 101 to facilitate the movement of the entire withering and shaping machine. Four columns 103 are arranged on the bottom plate 101, threaded rods 104 are rotatably installed on the columns 103, a front adjustment cross beam 105 and a rear adjustment cross beam 106 are arranged below the heating device 3, and both ends of the front adjustment cross beam 105 and the rear adjustment cross beam 106 are respectively threadedly connected to two of the threaded rods 104, and the driving mechanism 4 is fixedly installed on the front adjustment cross beam 105. A rotating handle 107 is arranged on the threaded rods 104 to facilitate the rotation of the threaded rods 104. When the threaded rods 104 rotate, the front adjustment cross beam 105 or the rear adjustment cross beam 106 connected to them by threads moves up and down, thereby adjusting the inclination angle of the cylindrical drums 2.

[0021] The driving mechanism 4 includes a driving motor 41, a set of rotating shafts 42 arranged below the cylindrical drum 2 and corresponding to the cylindrical drum 2 one by one. The rotating shafts 42 are arranged in the same direction as the cylindrical drum 2. A coupling gear 43, a first linkage gear 44 and a second linkage gear 45 are arranged on the rotating shaft 42. The coupling gear 43, the first linkage gear 44 and the second linkage gear 45 are arranged in descending order of size and along the axial direction of the rotating shaft 42. A driven gear 22 for driving the cylindrical drum 2 to rotate is arranged on the cylindrical drum 2. A driven chain 46 is arranged between the coupling gear 43 and the driven gear 22. The rotation of the rotating shaft 42 drives the cylindrical drum 2 to rotate through the driven chain 46. A linkage transmission chain 47 is arranged between the first linkage gear 44 on the rotating shaft 42 and the second linkage gear 45 on the adjacent rotating shaft 42. A driving gear 48 is arranged on the driving motor 41. A main transmission chain 49 is arranged between the driving gear 48 and the first linkage gear 44 on one of the rotating shafts 42. The driving motor 41 drives the rotation of this rotating shaft 42, and then drives the rotation of other rotating shafts 42 through the linkage transmission chain 47, so as to achieve the purpose of driving all the cylindrical drums 2 to rotate by one driving motor, which has the advantages of simple structure and low cost.

[0022] The tea feeding device 5 includes an inclined feeding hopper 51. A set of tea outlets 52 adapted to the cylindrical drum 2 are arranged at the discharging end of the feeding hopper 51. The tea outlet 52 is composed of two guiding ribs 54 arranged in a "V" shape. The tea inlet ends of adjacent tea outlets 52 are connected to each other. To ensure that the tea slides into the cylindrical drum, a vibration device 53 for driving the feeding hopper 51 to vibrate is arranged below the feeding hopper 51. Preferably, a small vibrator is used to make the feeding hopper 51 vibrate slightly.

[0023] Example 1: As Figure 1 、 Figure 4 shown, a tea withering and shaping machine is used to wither fresh tea leaves and complete shaping at the same time, so that the withered tea leaves are in a long strip shape. The tea withering and shaping machine includes a frame 1 for support, a set of cylindrical drums 2 inclinedly installed on the frame 1 and a driving mechanism 4 for driving the cylindrical drums 2 to rotate.

[0024] The driving mechanism 4 includes a driving motor 41 and a worm 410 horizontally arranged below the cylindrical drum 2. A driving gear 48 is arranged on the output shaft of the driving motor 41, a worm linkage tooth 411 is arranged on the worm 410, and a worm transmission chain 412 is arranged between the driving gear 48 and the worm linkage tooth 411. A driven gear 22 is arranged on the cylindrical drum 2, and a set of helical teeth 413 adapted to the driven gear 22 are arranged on the worm 410. The rotation of the driving motor 41 drives the rotation of the worm 410, and under the drive of the helical teeth 413, the cylindrical drum 2 is driven to rotate. This structure has good transmission stability and high precision, but the cost is relatively higher than that of Embodiment 1. Others are the same as Embodiment 1.

[0025] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A tea withering and shaping machine, characterized in that: It includes a frame (1), a group of cylindrical drums (2) inclinedly installed on the frame (1), a tea feeding device (5) arranged on one side of the cylindrical drums (2), a heating device (3) arranged below the cylindrical drums (2), and a driving mechanism (4) for driving the cylindrical drums (2) to rotate; a group of ribs (21) are arranged inside the cylindrical drums (2). The diameter of the cylindrical drum (2) is 140 - 160 mm, and the height of the ribs (21) is 8 - 12 mm. The inclination angle of the cylindrical drum (2) is 30° - 35°. The heating device (3) includes a heating base (31), a group of heating tubes (32) inserted into the heating base (31), a group of rolling bearings (33) arranged between the heating base (31) and the cylindrical drum (2), the heating base (31) is provided with side plates (34), and the side plates (34) extend upward to the same height as the cylindrical drum (2). The driving mechanism (4) includes a driving motor (41), a group of rotating shafts (42) arranged below the cylindrical drums (2) and corresponding to the cylindrical drums (2) one by one, and the rotating shafts (42) are arranged in the same direction as the cylindrical drums (2); a coupling gear (43), a first linkage gear (44) and a second linkage gear (45) are arranged on the rotating shafts (42), a driven gear (22) for driving the cylindrical drum (2) to rotate is arranged on the cylindrical drum (2), a driven chain (46) is arranged between the coupling gear (43) and the driven gear (22), and a linkage transmission chain (47) is arranged between the first linkage gear (44) on the rotating shaft (42) and the second linkage gear (45) on the adjacent rotating shaft (42); a driving gear (48) is arranged on the driving motor (41), and a main transmission chain (49) is arranged between the driving gear (48) and the first linkage gear (44) on one of the rotating shafts (42). The sizes of the coupling gear (43), the first linkage gear (44) and the second linkage gear (45) are arranged in descending order. The driving mechanism (4) includes a driving motor (41), a worm (410) horizontally arranged below the cylindrical drum (2), a driving gear (48) is arranged on the output shaft of the driving motor (41), a worm linkage tooth (411) is arranged on the worm (410), a worm transmission chain (412) is arranged between the driving gear (48) and the worm linkage tooth (411), and a driven gear (22) adapted to the worm (410) is arranged on the cylindrical drum (2). The frame (1) includes a bottom plate (101), four columns (103) are arranged on the bottom plate (101), threaded rods (104) are rotatably installed on the columns (103), a front adjusting cross beam (105) and a rear adjusting cross beam (106) are arranged below the heating device (3), and the two ends of the front adjusting cross beam (105) and the rear adjusting cross beam (106) are respectively threadedly connected to two of the threaded rods (104).

2. The tea leaf withering and shaping machine according to claim 1, wherein: The tea feeding device (5) includes a feed hopper (51) arranged obliquely. A set of tea outlets (52) adapted to the cylindrical drum (2) are provided at the discharge end of the feed hopper (51). The tea outlets (52) are composed of two guiding ribs (54) arranged in an "eight" shape. The tea inlet ends of adjacent tea outlets (52) are adjacent to each other.

3. The tea leaf fixing and shaping machine according to claim 2, wherein: A vibration device (53) for driving the feed hopper (51) to vibrate is provided below the feed hopper (51).

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