A fermentation device for black tea production

Abstract

The invention relates to the technical field of black tea production, and proposes a fermentation device for black tea production, comprising a box body, wherein a platform is horizontally arranged in the box body, guide rods for vertically slidingly guiding the platform are fixed on both sides of the interior of the box body, and a cylinder for controlling the lifting and lowering of the platform is fixed on the inner side of the bottom of the box body; in the invention, a turntable is driven to rotate by the operation of a motor, and a stop pin is driven to rotate circumferentially by the turntable, and the stop pin moves in a waist-shaped groove of a swing arm to drive the swing arm to swing back and forth around a positioning shaft as a center, and the first pulley is driven to reciprocate under the meshing of the arc-shaped tooth surface of the swing arm with the first gear, and the second pulleys are synchronously driven to reciprocate under the transmission action of a transmission belt, and then the first rotating arm and the second rotating arm drive their respective loosening mechanisms to sweep the tea embryos in the triangular material area, so as to facilitate the contact between the black tea and the air. Compared with the prior art, the invention does not require manual operation, and solves the problem of complicated loosening operation in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of black tea production, and in particular to a fermentation device for black tea production. Background Art

[0002] The fermentation process of black tea is a key step in making black tea. It involves the oxidation of polyphenols in tea leaves under the promotion of enzymes, which turns the green tea leaves red. The purpose of fermentation is to gradually convert the chlorophyll in tea leaves into red pigments, and the color of tea leaves also changes from green to reddish brown. During the fermentation process, polyphenols mainly composed of catechins undergo oxidative polymerization under the action of polyphenol oxidase to form water-soluble oxidation products such as theaflavins, thearubigins, theabrownins, polyester-type catechins, etc. These water-soluble oxidation products together with tea polyphenols, caffeine, amino acids, soluble sugars and other substances constitute the taste of tea soup.

[0003] After searching, the publication number CN116439300A discloses a fermentation device for black tea production. The fermentation device includes a box body, a base, an observation window, a hinge, a door handle and a temperature controller. The base is connected to the left and right sides of the bottom of the box body, and the upper and lower sides of the left front of the box body are connected with hinges by bolts. An observation window is connected between the hinges, and the condition inside the box body is observed through the observation window. A door handle is welded to the right front of the observation window, and a temperature controller is connected to the lower part of the box body. The temperature controller controls the temperature inside the box body. The fermentation device drives the moisturizing pad to move alternately by pulling the handle up and down, so that the black tea pressed at the bottom is difficult to contact with the air. By turning the black tea, the fermentation effect of the black tea can be better.

[0004] However, the above-mentioned black tea production fermentation device still has the following problems: the above-mentioned black tea production fermentation device still needs manual operation to assist in loosening the black tea leaves, which is relatively cumbersome. In addition, when the moisturizing pad of the above-mentioned black tea production fermentation device moves upward, the sweeping plate will move upward. With the cooperation between the threaded groove and the protrusion, the sweeping plate can automatically rotate inward to sweep the black tea. Therefore, there will be blind spots in the sweeping range of the sweeping plate, thereby reducing the fermentation effect of the black tea. Summary of the invention

[0005] The invention provides a fermentation device for black tea production, which solves the problems in the prior art that the loosening operation is complicated and there are blind spots in the sweeping range of the sweeping plate.

[0006] The technical solution of the present invention is as follows: A fermentation device for black tea production comprises a box body, a platform is horizontally arranged in the box body, guide rods for vertical sliding guidance of the platform are fixed on both sides of the interior of the box body, a cylinder for controlling the lifting of the platform is fixed on the inner side of the bottom of the box body, a shaking bed mechanism and a fermentation frame placed on the shaking bed mechanism are arranged above the platform, a cross grille is fixed in the fermentation frame, the cross grille divides the space in the fermentation frame into four independent triangular material areas, a top cover is suspended above the fermentation frame by a suspension rod, a cross rail distributed corresponding to the cross grille is fixed on the bottom surface of the top cover, movable frames distributed corresponding to the triangular material areas are arranged on the four sides of the top cover, a driving mechanism and a transmission mechanism driven by the driving mechanism to drive each movable frame to sweep back and forth in the triangular material area are arranged on the top of the top cover, and a loosening mechanism is arranged on the movable frame which can move back and forth in coordination with the cross rail when sweeping.

[0007] Preferably, the rocking bed mechanism comprises a vibrating bed, a vibrating motor is fixed at the middle position of the bottom surface of the vibrating bed, and the four corners of the bottom surface of the vibrating bed are connected to the platform through spring supports.

[0008] Preferably, the movable frame includes a shaft sleeve, on which a first rotating arm and a second rotating arm rotationally symmetrical with the first rotating arm are fixed, and the sides of the first rotating arm and the second rotating arm are rotatably connected to a rotating shaft distributed perpendicular to their respective length directions, and a second gear is fixed to the rotating shaft.

[0009] Preferably, the driving mechanism includes a motor, which is fixed to the top surface of the top cover, and a turntable is coaxially fixed to the output shaft end of the motor. A stop pin is vertically fixed to the top surface of the turntable, and the stop pin is eccentrically arranged with the turntable. A swing arm is arranged above the turntable, and one end of the swing arm is provided with an arc-shaped tooth surface, and the other end of the swing arm is provided with a waist-shaped groove. The stop pin is limited in the waist-shaped groove of the swing arm, and the middle position of the swing arm is rotatably connected to the top cover through a positioning shaft.

[0010] Preferably, the transmission mechanism includes a first shaft rod and four second shaft rods distributed in rectangles around the first shaft rod, the bottom end of the first shaft rod is rotatably connected to the top cover, the top end of the first shaft rod is fixed with a first gear meshing with the arc-shaped tooth surface of the swing arm, a first pulley is fixed on the first shaft rod, a second pulley is fixed on the second shaft rod, and the first pulley and each second pulley are connected via a transmission belt.

[0011] Preferably, a shaft seat rotatably connected to the second shaft rod is fixed at a center position of the edge of the top cover, and the bottom end of the second shaft rod passes through the shaft seat and is fixedly sleeved with the shaft sleeve.

[0012] Preferably, the loosening mechanism includes a first slide plate and a second slide plate, the first slide plate and the second slide plate are rotationally symmetrically distributed around the rotating axis, bar teeth meshing with the second gear are fixed to opposite sides of the first slide plate and the second slide plate, one end of the first slide plate is elastically connected to the first rotating arm through a compression spring, the other end of the first slide plate is rotatably connected to a guide wheel clamped on the cross rail, and a row of rake rods are fixed to the bottom surfaces of the first slide plate and the second slide plate.

[0013] Preferably, the rake rods on the bottom surfaces of the first slide plate and the second slide plate are respectively located on different sides of their respective bar teeth.

[0014] The beneficial effects of the present invention are:

[0015] In the present invention, the motor drives the turntable to rotate, and the turntable drives the stop pin to rotate circumferentially, and the stop pin moves in the waist groove of the swing arm to drive the swing arm to swing back and forth with the positioning shaft as the center, and the first pulley is driven to rotate back and forth by the meshing of the arc-shaped tooth surface of the swing arm and the first gear, and the second pulleys are synchronously driven to rotate back and forth by the transmission action of the transmission belt, and then the first rotating arm and the second rotating arm drive their respective loosening mechanisms to sweep the tea embryos in the triangular material area, so as to facilitate the contact between the black tea and the air. Compared with the prior art, the present invention does not require manual operation, and solves the problem that the loosening operation in the prior art is relatively cumbersome;

[0016] In the present invention, when the first rotating arm and the second rotating arm drive their respective loosening mechanisms to sweep the tea embryos in the triangular material area, due to the cooperation of the guide wheel and the cross rail, the rake rods on the bottom surfaces of the first slide plate and the second slide plate can perform staggered sweeping on the tea embryos to improve the loosening effect of the black tea embryos. Compared with the prior art, the present invention can synchronously sweep the tea embryos in the fermentation frame, and there is no dead angle during the sweeping, which solves the problem of dead angles in the sweeping range of the sweeping plate in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of a fermentation device for black tea production proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the front view of a fermentation device for black tea production proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the top cover and various mechanisms proposed by the present invention from a top view;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the top cover and various mechanisms proposed by the present invention when viewed from above;

[0022] Figure 5 A schematic diagram of the planar structure of each mechanism proposed by the present invention when viewed from above;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the top cover proposed by the present invention when viewed from above;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the driving mechanism proposed by the present invention from a top view;

[0025] Figure 8 This is a schematic diagram of the planar structure of the transmission mechanism proposed by the present invention from a top view perspective;

[0026] Fig. 9 This is a schematic diagram of the three-dimensional structure of the loosening mechanism proposed by the present invention from a top view;

[0027] Fig.10 This is a schematic diagram of the three-dimensional structure of the loosening mechanism proposed by the present invention when viewed from above;

[0028] In the figure: 1, box; 2, platform; 3, vibration bed; 4, fermentation frame; 41, cross grid; 5, vibration motor; 6, spring support; 7, guide rod; 8, top cover; 81, cross rail; 82, shaft seat; 9, suspension rod; 10, movable frame; 101, first rotating arm; 102, second rotating arm; 103, shaft sleeve; 104, rotating shaft; 105, second gear; 11, driving mechanism; 111, motor; 112, turntable ; 113, stop pin; 114, swing arm; 115, positioning shaft; 116, first gear; 12, transmission mechanism; 121, first shaft rod; 122, second shaft rod; 123, first pulley; 124, second pulley; 125, transmission belt; 13, loosening mechanism; 131, first slide plate; 132, second slide plate; 133, guide wheel; 134, bar teeth; 135, rake rod; 136, compression spring; 14, cylinder. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 and Figure 2The present invention provides a technical solution: a fermentation device for black tea production, comprising a box body 1, a platform 2 is horizontally arranged in the box body 1, guide rods 7 for vertically slidingly guiding the platform 2 are fixed on both sides of the box body 1, a cylinder 14 for controlling the lifting of the platform 2 is fixed on the inner side of the bottom of the box body 1, a shaking bed mechanism and a fermentation frame 4 placed on the shaking bed mechanism are arranged above the platform 2, a cross grille 41 is fixed in the fermentation frame 4, the cross grille 41 divides the space in the fermentation frame 4 into four independent triangular material areas, a top cover 8 is suspended above the fermentation frame 4 by a suspension rod 9, a cross rail 81 corresponding to the cross grille 41 is fixed on the bottom surface of the top cover 8, four sides of the top cover 8 are provided with movable frames 10 corresponding to the triangular material areas, a driving mechanism 11 and a transmission mechanism 12 driven by the driving mechanism 11 to drive each movable frame 10 to sweep back and forth in the triangular material area are arranged on the top of the top cover 8, and a loosening mechanism 13 is arranged on the movable frame 10, which can move back and forth in coordination with the cross rail 81 when sweeping.

[0031] See also Figure 1 and Figure 2 The shaking bed mechanism includes a vibrating bed 3, a vibrating motor 5 is fixed at the middle position of the bottom surface of the vibrating bed 3, and the four corners of the bottom surface of the vibrating bed 3 are connected to the platform 2 through spring supports 6. The rolled tea embryos can be placed in the triangular material area of ​​the fermentation frame 4 and vibrated and dispersed evenly by the vibrating motor 5. After loosening by the loosening mechanism 13, the vibrating motor 5 can be used to vibrate and disperse again to ensure uniform fermentation.

[0032] See also Figure 3 , Figure 4 , Fig. 9 and Fig.10 The movable frame 10 includes a shaft sleeve 103, on which a first rotating arm 101 and a second rotating arm 102 rotationally symmetrical with the first rotating arm 101 are fixed. The sides of the first rotating arm 101 and the second rotating arm 102 are rotatably connected to a rotating shaft 104 distributed perpendicularly to their respective length directions, and a second gear 105 is fixed to the rotating shaft 104.

[0033] See also Figure 3 and Figure 7The driving mechanism 11 includes a motor 111, which is fixed to the top surface of the top cover 8. A turntable 112 is coaxially fixed to the output shaft end of the motor 111. A stop pin 113 is vertically fixed to the top surface of the turntable 112. The stop pin 113 is eccentrically arranged with the turntable 112. A swing arm 114 is arranged above the turntable 112. An arc-shaped tooth surface is arranged at one end of the swing arm 114, and a waist-shaped groove is opened at the other end of the swing arm 114. The stop pin 113 is limited in the waist-shaped groove of the swing arm 114. The middle position of the swing arm 114 is rotatably connected to the top cover 8 through a positioning shaft 115. The turntable 112 is driven to rotate by the operation of the motor 111, and the stop pin 113 is driven to rotate circumferentially by the turntable 112. The stop pin 113 moves in the waist-shaped groove of the swing arm 114, thereby driving the swing arm 114 to swing back and forth with the positioning shaft 115 as the center.

[0034] See also Figure 3 and Figure 8 The transmission mechanism 12 includes a first shaft rod 121 and four second shaft rods 122 distributed in rectangular shapes around the first shaft rod 121. The bottom end of the first shaft rod 121 is rotatably connected to the top cover 8. The top end of the first shaft rod 121 is fixed with a first gear 116 meshing with the arc-shaped tooth surface of the swing arm 114. A first pulley 123 is fixed on the first shaft rod 121, and a second pulley 124 is fixed on the second shaft rod 122. The first pulley 123 is connected to each second pulley 124 through a transmission belt 125. A shaft seat 82 rotatably connected to the second shaft rod 122 is fixed at the center of the edge of the top cover 8. The second shaft rod 12 2 penetrates the shaft seat 82 and is fixedly sleeved with the shaft sleeve 103. When the swing arm 114 reciprocates around the positioning shaft 115, the first pulley 123 is driven to reciprocate by the meshing of the arc-shaped tooth surface of the swing arm 114 and the first gear 116. The second pulleys 124 are synchronously driven to reciprocate by the transmission action of the transmission belt 125, and then the respective loosening mechanisms 13 are driven by the first rotating arm 101 and the second rotating arm 102 to sweep the tea embryos in the triangular material area. It should be noted that the transmission ratio of the first pulley 123 and the transmission belt 125 needs to meet the rotation angle of the movable frame 10 for one cycle of 90 degrees.

[0035] See also Figure 3 , Figure 4 , Fig. 9 and Fig.10The loosening mechanism 13 includes a first slide plate 131 and a second slide plate 132, and the first slide plate 131 and the second slide plate 132 are rotationally symmetrically distributed around the rotating shaft 104. A bar tooth 134 meshing with the second gear 105 is fixed on the opposite side of the first slide plate 131 and the second slide plate 132. One end of the first slide plate 131 is elastically connected to the first rotating arm 101 through a compression spring 136, and the other end of the first slide plate 131 is rotatably connected to a guide wheel 133 clamped on the cross rail 81. A row of rake rods 135 are fixed to the bottom surfaces of the first slide plate 131 and the second slide plate 132. The rake rods 135 on the bottom surfaces of the first slide plate 131 and the second slide plate 132 are respectively located on different sides of their respective bar teeth 134, and then through the reciprocating 90-degree sweeping of the first rotating arm 101 and the second rotating arm 102, the rake rods 135 on the bottom surfaces of the first slide plate 131 and the second slide plate 132 can perform staggered sweeping on the tea embryos to improve the loosening effect of the black tea embryos.

[0036] The working principle and use process of the present invention are as follows: the rolled tea embryos are placed in the triangular material area of ​​the fermentation frame 4 and evenly dispersed by the vibration motor 5 and slightly compressed, and then covered with a fermentation cloth soaked in warm water to increase the temperature and humidity of the fermented leaves, promote enzyme activity, and shorten the fermentation time.

[0037] The tea embryos of the fermentation frame 4 are loosened within a certain period of time. The specific process is as follows: the fermentation cloth is removed, and the fermentation frame 4 is lifted up by the cylinder 14, so that the rake rods 135 on the bottom surfaces of the first slide plate 131 and the second slide plate 132 are in contact with the inner bottom wall of the fermentation frame 4, and then the motor 111 drives the turntable 112 to rotate, and the turntable 112 drives the stop pin 113 to rotate circumferentially, and the stop pin 113 moves in the waist-shaped groove of the swing arm 114, thereby driving the swing arm 114 to swing back and forth around the positioning shaft 115 as the center, and the first pulley 123 is driven to reciprocate under the meshing of the arc-shaped tooth surface of the swing arm 114 and the first gear 116, and the second pulleys 124 are synchronously driven to reciprocate under the transmission action of the transmission belt 125, and then the first rotating arm 101 and the second rotating arm 102 drive their respective loosening mechanisms 13 to sweep the tea embryos in the triangular material area, so as to facilitate the contact between the black tea and the air;

[0038] In the process that the first rotating arm 101 and the second rotating arm 102 drive their respective loosening mechanisms 13 to sweep the tea leaves in the triangular material area, since the guide wheel 133 is clamped on the cross rail 81, Figure 5As shown in the figure, A is the loosening mechanism 13 in the vertical position, B is the loosening mechanism 13 in the horizontal position, a and c are the outer end parts of the cross rail 81, b is the center part of the cross rail 81, o1 and o2 are the midpoints of a and b, when the guide wheel 133 of the loosening mechanism 13 at A moves from point a of the cross rail 81 to point o1, the guide wheel 133 of the loosening mechanism 13 at B moves from point b of the cross rail 81 to point o2, the compression springs 136 of the loosening mechanisms 13 at A and B are compressed, so that the lengths of the two loosening mechanisms 13 are shortened, that is, the first slide 131 and the second slide 132 move toward each other through the meshing of their respective bar teeth 134 with the second gear 105. When the guide wheel 133 of the loosening mechanism 13 at A moves from point o1 to point b of the cross rail 81, the guide wheel 133 of the loosening mechanism 13 at B moves from point o2 to point c of the cross rail 81, and the compression springs 136 of the loosening mechanisms 13 at A and B are restored to extend the lengths of the two loosening mechanisms 13, that is, the first slide 131 and the second slide 132 move in opposite directions through the engagement of their respective bar teeth 134 with the second gear 105, and then through the reciprocating 90-degree sweeping of the first rotating arm 101 and the second rotating arm 102, the rake rods 135 on the bottom surfaces of the first slide 131 and the second slide 132 can perform staggered sweeping on the tea embryos, so as to improve the loosening effect on the black tea embryos.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fermentation device for black tea production, comprising a housing (1), characterized in that: A platform (2) is horizontally arranged in the box (1), guide rods (7) for guiding the platform (2) to slide vertically are fixed on both sides of the box (1), a cylinder (14) for controlling the lifting of the platform (2) is fixed on the inner side of the bottom of the box (1), a shaking bed mechanism and a fermentation frame (4) placed on the shaking bed mechanism are arranged above the platform (2), a cross grille (41) is fixed in the fermentation frame (4), the cross grille (41) divides the space in the fermentation frame (4) into four independent triangular material areas, and a suspension rod (41) is provided above the fermentation frame (4). 9) a top cover (8) is hoisted, a cross rail (81) corresponding to the cross grid (41) is fixed on the bottom surface of the top cover (8), movable frames (10) corresponding to the triangular material area are arranged on the four sides of the top cover (8), a driving mechanism (11) and a transmission mechanism (12) driven by the driving mechanism (11) to drive each movable frame (10) to sweep back and forth in the triangular material area are arranged on the top of the top cover (8), and a loosening mechanism (13) is arranged on the movable frame (10) to move back and forth in coordination with the cross rail (81) when sweeping; The loosening mechanism (13) comprises a first slide plate (131) and a second slide plate (132), wherein the first slide plate (131) and the second slide plate (132) are rotationally symmetrically distributed around the rotating shaft (104), and bar teeth (134) meshing with the second gear (105) are fixed on opposite sides of the first slide plate (131) and the second slide plate (132), and one end of the first slide plate (131) is elastically connected to the first rotating arm (101) via a compression spring (136), and the other end of the first slide plate (131) is rotatably connected to a guide wheel (133) clamped on the cross rail (81), and a row of rake rods (135) are fixed on the bottom surfaces of the first slide plate (131) and the second slide plate (132), and the rake rods (135) on the bottom surfaces of the first slide plate (131) and the second slide plate (132) are respectively located on different sides of their respective bar teeth (134); The movable frame (10) comprises a shaft sleeve (103), on which a first rotating arm (101) and a second rotating arm (102) rotationally symmetrical with the first rotating arm (101) are fixed, and the side surfaces of the first rotating arm (101) and the second rotating arm (102) are both rotatably connected to a rotating shaft (104) distributed perpendicularly to their respective length directions, and a second gear (105) is fixed to the rotating shaft (104).

2. A fermentation device for black tea production according to claim 1, characterized in that: The rocking bed mechanism comprises a vibrating bed (3), a vibrating motor (5) being fixed at the middle of the bottom surface of the vibrating bed (3), and the four corners of the bottom surface of the vibrating bed (3) being connected to the platform (2) via spring supports (6).

3. A fermentation device for black tea production according to claim 1, characterized in that: The driving mechanism (11) comprises a motor (111), the motor (111) being fixed to the top surface of the top cover (8), a turntable (112) being coaxially fixed to the output shaft end of the motor (111), a stop pin (113) being vertically fixed to the top surface of the turntable (112), the stop pin (113) being eccentrically arranged with the turntable (112), a swing arm (114) being arranged above the turntable (112), one end of the swing arm (114) being provided with an arc-shaped tooth surface, the other end of the swing arm (114) being provided with a waist-shaped groove, the stop pin (113) being limited in the waist-shaped groove of the swing arm (114), and the middle position of the swing arm (114) being rotatably connected to the top cover (8) via a positioning shaft (115).

4. A fermentation device for black tea production according to claim 1, characterized in that: The transmission mechanism (12) comprises a first shaft (121) and four second shafts (122) distributed in rectangular shapes around the first shaft (121); the bottom end of the first shaft (121) is rotatably connected to the top cover (8); the top end of the first shaft (121) is fixed with a first gear (116) meshing with the arc-shaped tooth surface of the swing arm (114); a first pulley (123) is fixed on the first shaft (121); a second pulley (124) is fixed on the second shaft (122); and the first pulley (123) and each second pulley (124) are connected in transmission via a transmission belt (125).

5. A fermentation device for black tea production according to claim 1, characterized in that: A shaft seat (82) rotatably connected to the second shaft rod (122) is fixed at a center position of the edge of the top cover (8); the bottom end of the second shaft rod (122) passes through the shaft seat (82) and is fixedly sleeved with the shaft sleeve (103).

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