Fermentation equipment for tea processing

Abstract

The present invention relates to the field of tea fermentation technology, and discloses a fermentation device for tea processing, including a fermentation cylinder, and also including: two supports, respectively fixedly connected to the two sides of the outer wall of the fermentation cylinder, for supporting the fermentation cylinder for tea fermentation; a feed hatch, installed on the front of the outer wall of the fermentation cylinder, for adding tea leaves to the interior of the fermentation cylinder; a discharge hatch, installed on the bottom of the outer wall of the fermentation cylinder, for discharging the fermented tea leaves inside the fermentation cylinder; a rotating drum, arranged inside the fermentation cylinder, for rotating and turning the tea leaves. The present invention can achieve continuous turning of tea leaves during the fermentation process through the design of the rotating drum and the rotating mechanism. The synergistic effect of the gear lever and the dispersion mechanism in the rotating drum ensures that all parts of the tea leaves are evenly heated and moistened, avoids the problem of uneven fermentation due to local accumulation, and significantly improves the fermentation effect. The filter hole design on the rotating drum can effectively screen impurities in the tea leaves, further improving the quality of the tea leaves.

Description

Technical Field

[0001] The invention relates to the technical field of tea fermentation, in particular to fermentation equipment for tea processing. Background Art

[0002] Tea fermentation is a critical step in tea processing, particularly for black tea, dark tea, and Pu'er tea. The fermentation process directly impacts the flavor, color, and quality of tea. Fermentation transforms the chemical composition of tea leaves through microbial action or enzymatic reactions, imparting their unique aroma, flavor, and health benefits. As consumers' demands for tea quality and health benefits continue to rise, the importance of tea fermentation technology is becoming increasingly prominent.

[0003] During traditional fermentation, tea leaves pile up together, which can easily lead to over- or under-fermentation in some areas. Heat accumulation in the center can cause over-fermentation, while leaves at the edges may under-ferment, affecting the consistency of tea quality. Therefore, the tea leaves need to be regularly turned to ensure even fermentation. A fermentation device for tea processing was developed to address this issue. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a fermentation device for tea processing in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fermentation device for tea processing, comprising a fermentation cylinder, and further comprising:

[0006] Two supports are fixedly connected to both sides of the outer wall of the fermentation cylinder, respectively, for supporting the fermentation cylinder for tea fermentation;

[0007] A feeding hatch is installed on the front side of the outer wall of the fermentation cylinder and is used to add tea leaves into the fermentation cylinder;

[0008] A discharge hatch is installed at the bottom of the outer wall of the fermentation cylinder and is used to discharge the fermented tea leaves inside the fermentation cylinder;

[0009] The rotating drum is arranged inside the fermentation drum and is used to rotate and turn the tea leaves;

[0010] A rotating mechanism is provided on the outer wall of the drum and is used to drive the drum to rotate;

[0011] a dispersion mechanism, provided on the inner wall of the rotating drum, for moving the tea leaves inside the rotating drum;

[0012] A dredging mechanism, provided on the dispersion mechanism, for dredging clogged filter holes on the drum;

[0013] The rotating mechanism comprises:

[0014] Two fixed rings are fixedly connected to both sides of the inner wall of the fermentation cylinder, and the two ends of the rotating cylinder rotate on the fixed rings respectively;

[0015] An annular hole is provided on the outer wall of the fermentation cylinder, and a gear ring is fixedly connected to the outer wall of the rotating cylinder. The gear ring is used to drive the rotating cylinder to rotate. A plurality of filter holes are provided on the rotating cylinder for screening impurities in tea leaves.

[0016] Preferably, the rotating mechanism further comprises:

[0017] Motor 2 is fixedly connected to the outer wall of the fermentation cylinder, and the output end of the motor 2 is fixedly connected to a gear, and the gear is engaged with the gear ring to drive the gear ring to rotate;

[0018] Multiple levers, equally divided and fixedly connected to the inner wall of the drum, are used to move the tea leaves to rotate inside the drum;

[0019] The sliding cover is arranged on the rotating drum and cooperates with the feeding hatch and the unloading hatch to allow tea leaves to enter and exit the rotating drum.

[0020] Preferably, the dispersion mechanism includes:

[0021] Two fixing plates, respectively fixedly connected to the inner wall of the fixing ring;

[0022] A rotating shaft is rotatably connected to the inner wall of the fermentation cylinder, and one side of the rotating shaft movably passes through the fermentation cylinder and extends outward. A motor 1 is installed on the outer wall of the fermentation cylinder, and the output end of the motor 1 is connected to the extended end of the rotating shaft for driving the rotating shaft to rotate;

[0023] an elastic telescopic rod 1, fixedly connected to the top of the inner wall of the fixing ring;

[0024] An elliptical disk is fixedly connected to the outer wall of the rotating shaft, and the outer wall of the elliptical disk is in contact with the bottom telescopic end of the elastic telescopic rod;

[0025] Two arc-shaped rod sleeves are respectively hinged on the fixed plate and located on both sides of the rotating shaft for moving the tea leaves;

[0026] The arc-shaped rod 1 has one end hinged on the outer wall of the telescopic end of the elastic telescopic rod 1, and the other end hinged on the arc-shaped rod sleeve, and is used for shifting the arc-shaped rod sleeve to deflect and shift the tea leaves.

[0027] Preferably, the dispersion mechanism further comprises:

[0028] The arc-shaped rod 2 is movably connected to the inner wall of the arc-shaped rod sleeve, and is pushed by a return spring on its inner wall to move the arc-shaped rod 2 outward to fit the inner wall of the fixing ring;

[0029] The shifting plate is arranged on the second arc-shaped rod and is used for following the movement of the second arc-shaped rod and shifting the tea leaves.

[0030] Preferably, a movable hole is opened on the arc rod 2, and the shift plate moves in the movable hole, and the bottom of the shift plate is arranged in an arc shape and contacts the gear lever, and multiple springs are connected to both sides of the shift plate for resetting the shift plate.

[0031] Preferably, a plurality of through holes are provided on the paddle, and when the paddle moves the tea leaves, the through holes are used to allow the tea leaves to ventilate.

[0032] Preferably, the dredging mechanism includes:

[0033] The connecting rods are respectively fixedly connected to the hinge rods of the arc-shaped rod 1 and are used to move up and down following the elastic telescopic rod 1;

[0034] The second elastic telescopic rod is fixedly connected to the top of the connecting rod, and the output end of the second elastic telescopic rod is fixedly connected to a dredging rod for dredging the filter holes of the rotating drum.

[0035] Preferably, a plurality of bristles are provided above the outer wall of the dredging rod, and the bristles clean the clogged inner wall of the filter hole when the dredging rod moves up and down.

[0036] The present invention adopts the above technical solution, which can bring the following beneficial effects:

[0037] 1. This tea processing and fermentation equipment, through the design of the drum and rotating mechanism, can achieve continuous tumbling of tea leaves during the fermentation process. The coordinated action of the gear lever and the dispersion mechanism within the drum ensures that all parts of the tea leaves are evenly heated and moistened, avoiding uneven fermentation caused by localized accumulation, significantly improving the fermentation effect. The filter holes on the drum effectively screen out impurities in the tea leaves, further improving the tea quality.

[0038] 2. This tea processing and fermentation equipment uses the meshing of gears and ring gears to rotate the drum, offering easy operation and a high degree of automation. This design reduces manual intervention, lowers labor intensity, and improves production efficiency. The equipment's feed and discharge hatches, combined with sliding covers, facilitate the loading and unloading of tea, further enhancing operational convenience.

[0039] 3. The fermentation cylinder of this tea processing fermentation equipment can be combined with an external heating device to precisely control the fermentation temperature to meet the fermentation requirements of different tea types. This temperature regulation function ensures a stable and consistent fermentation process, improving the controllability of tea quality. The equipment also increases air circulation by turning the tea leaves, ensuring sufficient oxygen supply during the fermentation process, promoting aerobic fermentation, and preventing the development of unpleasant flavors due to lack of oxygen.

[0040] 4. The dredging mechanism of this tea processing and fermentation equipment effectively prevents clogging of the filter holes on the rotating drum. The dredging rod and brush are used together to regularly clean the filter holes, ensuring that impurities can be discharged smoothly, further improving the purity and quality of the tea. The automatic cleaning function of the dredging mechanism reduces the frequency and difficulty of manual cleaning, improving the equipment's operating efficiency and maintenance convenience.

[0041] 5. This tea processing fermentation equipment evenly stirs the tea leaves, ensuring that all parts of the tea are evenly heated and moistened during the fermentation process, avoiding over- or under-fermentation in some areas and thus enhancing the overall flavor and aroma of the tea. The design of the dispersion mechanism and paddles promotes the gathering and gripping of tea leaves, increases air circulation, aids heat dissipation, and prevents over-fermentation or deterioration due to high temperatures, further optimizing the tea's quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is an isometric structural diagram of the present invention;

[0043] Figure 2 This is a schematic diagram of the feed hatch opening structure of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of the rotating drum of the present invention;

[0045] Figure 4 This is a schematic diagram of the exploded structure of the rotating mechanism of the present invention;

[0046] Figure 5 This is a schematic diagram of the explosion structure of the dispersion mechanism of the present invention;

[0047] Figure 6 For the present invention Figure 5 A in the middle is an enlarged structural diagram;

[0048] Figure 7 It is a schematic diagram of the partial structure of the dispersion mechanism of the present invention;

[0049] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B in the middle.

[0050] In the figure: 1. Fermentation cylinder; 2. Feed hatch; 3. Support; 4. Motor 1; 5. Discharge hatch; 6. Rotating cylinder; 7. Rotating mechanism; 71. Motor 2; 72. Gear; 73. Gear ring; 74. Fixed ring; 75. Shift rod; 8. Dispersion mechanism; 81. Fixed plate; 82. Rotating shaft; 83. Elastic telescopic rod 1; 84. Arc rod 1; 85. Arc rod sleeve; 86. Arc rod 2; 861. Movable hole; 862. Shrapnel; 87. Oval disk; 88. Paddle; 9. Dredging mechanism; 91. Connecting rod; 92. Elastic telescopic rod 2; 93. Dredging rod. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0052] See also Figure 1-8 One embodiment of the present invention is: a fermentation device for tea processing, comprising a fermentation cylinder 1, and further comprising:

[0053] Two supports 3 are fixedly connected to the outer wall of the fermentation cylinder 1 on both sides, and are used to support the fermentation cylinder 1 for tea fermentation;

[0054] The feeding hatch 2 is installed on the front of the outer wall of the fermentation cylinder 1 and is used to add tea leaves into the fermentation cylinder 1;

[0055] The unloading hatch 5 is installed at the bottom of the outer wall of the fermentation cylinder 1 and is used to discharge the fermented tea leaves inside the fermentation cylinder 1;

[0056] The rotating drum 6 is arranged inside the fermentation drum 1 and is used to rotate and turn the tea leaves;

[0057] A rotating mechanism 7 is provided on the outer wall of the drum 6 and is used to drive the drum 6 to rotate;

[0058] A dispersion mechanism 8 is provided on the inner wall of the rotating drum 6 and is used to move the tea leaves inside the rotating drum 6;

[0059] The dredging mechanism 9 is provided on the dispersion mechanism 8 and is used to dredge the clogged filter holes on the rotating drum 6;

[0060] The rotating mechanism 7 comprises:

[0061] Two fixing rings 74 are fixedly connected to both sides of the inner wall of the fermentation cylinder 1, and the two ends of the rotating cylinder 6 rotate on the fixing rings 74 respectively;

[0062] An annular hole is provided on the outer wall of the fermentation cylinder 1, and a gear ring 73 is fixedly connected to the outer wall of the rotating drum 6. The gear ring 73 is used to drive the rotating drum 6 to rotate. The rotating drum 6 is provided with multiple filter holes for screening impurities in tea leaves.

[0063] The rotating mechanism 7 also includes:

[0064] Motor 2 71 is fixedly connected to the outer wall of the fermentation cylinder 1, and the output end of motor 2 71 is fixedly connected to a gear 72, which is engaged with a gear ring 73 to drive the gear ring 73 to rotate;

[0065] A plurality of levers 75 are equally divided and fixedly connected to the inner wall of the rotating drum 6, and are used to move the tea leaves to rotate in the rotating drum 6;

[0066] The sliding cover is arranged on the rotating drum 6 and cooperates with the feeding hatch 2 and the unloading hatch 5 to allow tea leaves to enter and exit the rotating drum 6 .

[0067] Working principle: When the tea leaves are fermenting, the tea leaves are placed in the fermentation cylinder 1, and the temperature inside the fermentation cylinder 1 is adjusted by an external heating device, so that the fermentation temperature of the tea leaves can be controlled and adapted to the fermentation of different tea leaves. When the tea leaves are fermenting, the feed hatch 2 and the sliding cover of the rotating drum 6 are opened, and then the tea leaves are added to the rotating drum 6. After the addition is completed, the sliding cover and the feed hatch 2 are closed, and the oxygen content in the temporal part of the fermentation cylinder 1 can be controlled by adjusting the opening and closing angle of the feed hatch 2. At this time, by starting the motor 2 71, the gear 72 will be driven to rotate, and at this time, the gear ring 73 will be driven to rotate through the gear 72, so that The drum 6 is driven to rotate, and the tea leaves in the drum 6 rotate with the drum 6. At this time, the impurities in the tea leaves in the drum 6 are separated through the filter holes on the rotating drum 6 and enter the gap between the fermentation drum 1 and the drum 6. At the same time, the multiple gear levers 75 on the drum 6 can drive the tea leaves in the drum 6 to rotate with the drum 6, so as to move the tea leaves so that the tea leaves can be turned higher in the drum 6, thereby improving the turning effect. In the fermentation process, the heat generated by the accumulation of tea leaves is avoided, and the various parts of the tea leaves are evenly heated, thereby ensuring the consistency of the fermentation process and improving the fermentation effect.

[0068] See also Figure 1-8 Based on the above embodiment, in another embodiment of the present invention, the dispersion mechanism 8 includes:

[0069] Two fixing plates 81 are respectively fixedly connected to the inner wall of the fixing ring 74;

[0070] A rotating shaft 82 is rotatably connected to the inner wall of the fermentation cylinder 1, and one side of the rotating shaft 82 is movable through the fermentation cylinder 1 and extends outward. A motor 4 is installed on the outer wall of the fermentation cylinder 1, and the output end of the motor 4 is connected to the extended end of the rotating shaft 82 for driving the rotating shaft 82 to rotate.

[0071] An elastic telescopic rod 83 is fixedly connected to the top of the inner wall of the fixing ring 74;

[0072] The oval disk 87 is fixedly connected to the outer wall of the rotating shaft 82, and the outer wall of the oval disk 87 is in contact with the bottom telescopic end of the elastic telescopic rod 83;

[0073] Two arc-shaped rod sleeves 85 are respectively hinged on the fixed plate 81 and located on both sides of the rotating shaft 82 for moving the tea leaves;

[0074] One end of the arc rod 1 84 is hinged to the outer wall of the telescopic end of the elastic telescopic rod 1 83, and the other end is hinged to the arc rod sleeve 85, which is used to move the arc rod sleeve 85 to deflect and move the tea leaves.

[0075] The decentralized mechanism 8 also includes:

[0076] The arc-shaped rod 86 is movably connected to the inner wall of the arc-shaped rod sleeve 85, and is pushed outward by the return spring on its inner wall to fit the inner wall of the fixed ring 74;

[0077] The shifting plate 88 is provided on the second arc-shaped rod 86 and is used to move along with the second arc-shaped rod 86 and shift the tea leaves.

[0078] A movable hole 861 is provided on the arc-shaped rod 86, and the dial plate 88 moves in the movable hole 861. The bottom of the dial plate 88 is arranged in an arc shape and contacts the gear lever 75. A plurality of spring pieces 862 are connected to both sides of the dial plate 88 for resetting the dial plate 88.

[0079] The paddle plate 88 is provided with a plurality of through holes, and when the paddle plate 88 paddles the tea leaves, the through holes are used to allow the tea leaves to ventilate.

[0080] Working principle: When the tea leaves are fermented, by starting the motor 14, the motor 14 will drive the rotating shaft 82 to rotate, and then drive the elliptical disk 87 to rotate. When the elliptical disk 87 rotates, it will contact the telescopic rod 1 83, and will continuously change the telescopic end of the telescopic rod 1 83 to move up and down, which will drive the arc rod 1 84 hinged on its outer wall to move, and its two sides will continuously squeeze the arc rod sleeve 85, so that the arc rod sleeve 85 can be driven to deflect around its hinge point, thereby driving the arc rod 2 86 connected to the arc rod sleeve 85 to contract and extend, and move on the fixed ring 74, thereby forming a grabbing effect, and at the same time, the paddle 88 set on the arc rod 2 86 follows the movement to achieve the gathering and grabbing of the tea leaves, so as to promote the turning effect of the tea leaves, increase air circulation, help heat dissipation, and prevent the tea leaves from over-fermenting or deterioration due to high temperature;

[0081] When the paddle 88 moves, its bottom will contact the gear lever 75, and the gear lever 75 will push the paddle 88 to move. When the paddle 88 moves in the movable hole 861, it will not be pushed by the gear lever 75, but will be pushed by the spring piece 862 to reset. The movement of the paddle 88 and the through hole on the paddle 88 can promote air circulation during high-temperature fermentation, so that the tea leaves are fully in contact with the air, thereby increasing the fermentation temperature.

[0082] See also Figure 1-8 On the basis of the above embodiment, in another embodiment of the present invention, the dredging mechanism 9 includes:

[0083] The connecting rods 91 are respectively fixedly connected to the hinge rods of the arc-shaped rod 84 and are used to move up and down following the elastic telescopic rod 83;

[0084] The second elastic telescopic rod 92 is fixedly connected to the top of the connecting rod 91 , and the output end of the second elastic telescopic rod 92 is fixedly connected to a dredging rod 93 for dredging the filter holes of the rotating drum 6 .

[0085] A plurality of bristles are provided above the outer wall of the dredging rod 93, and the bristles clean the clogged inner wall of the filter hole when the dredging rod 93 moves up and down.

[0086] Working principle: When the drum 6 rotates, the impurities in the tea leaves can be filtered out by using the rotating filter holes after the tea leaves are moved. Then, when the telescopic rod 1 83 moves up and down, the connecting rod 91 will be synchronously driven to move up and down, and the elastic telescopic rod 92 will drive the dredging rod 93 and the bristles to touch and clean the filter holes, so that the blocked filter holes can be dredged to avoid clogging of the filter holes and prevent impurities from being unable to be filtered, affecting the quality and processing efficiency of the tea leaves. At the same time, when the connecting rod 91 is pushed upward, the dredging rod 93 is prevented from being blocked by the gear rod 75. When the dredging rod 93 contacts the gear rod 75, it pushes the elastic telescopic rod 2 92 to contract to better achieve the dredging process.

[0087] The present invention provides a fermentation device for tea processing. There are many methods and approaches for implementing this technical solution. The above is only a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A fermentation device for tea processing, comprising a fermentation cylinder (1), characterized in that: Also includes: Two supports (3) are respectively fixedly connected to both sides of the outer wall of the fermentation cylinder (1) and are used to support the fermentation cylinder (1) for tea fermentation; A feed hatch (2) is installed on the front side of the outer wall of the fermentation cylinder (1) and is used to add tea leaves into the interior of the fermentation cylinder (1); A discharge hatch (5) is installed at the bottom of the outer wall of the fermentation cylinder (1) and is used to discharge the fermented tea leaves inside the fermentation cylinder (1); A rotating drum (6) is arranged inside the fermentation drum (1) and is used for rotating and turning the tea leaves; A rotating mechanism (7) is provided on the outer wall of the rotating drum (6) and is used to drive the rotating drum (6) to rotate; a dispersion mechanism (8), arranged on the inner wall of the rotating drum (6), for moving the tea leaves inside the rotating drum (6); a dredging mechanism (9), arranged on the dispersion mechanism (8), for dredging clogged filter holes on the rotating drum (6); The rotating mechanism (7) comprises: Two fixing rings (74) are respectively fixedly connected to the inner walls of the fermentation cylinder (1), and the two ends of the rotating cylinder (6) rotate on the fixing rings (74); The outer wall of the fermentation cylinder (1) is provided with an annular hole, and the outer wall of the rotating cylinder (6) is fixedly connected with a gear ring (73), the gear ring (73) is used to drive the rotating cylinder (6) to rotate, and the rotating cylinder (6) is provided with a plurality of filter holes for screening impurities in tea leaves; The rotating mechanism (7) further comprises: Motor 2 (71) is fixedly connected to the outer wall of the fermentation cylinder (1), and the output end of the motor 2 (71) is fixedly connected to a gear (72), and the gear (72) is engaged with the gear ring (73) to drive the gear ring (73) to rotate; A plurality of shift rods (75) are equally divided and fixedly connected to the inner wall of the rotating drum (6) for moving the tea leaves to rotate in the rotating drum (6); A sliding cover is provided on the rotating drum (6) and cooperates with the feeding hatch (2) and the unloading hatch (5) to allow tea leaves to enter and exit the rotating drum (6); The dispersion mechanism (8) comprises: Two fixing plates (81) are respectively fixedly connected to the inner wall of the fixing ring (74); A rotating shaft (82) is rotatably connected to the inner wall of the fermentation cylinder (1), and one side of the rotating shaft movably passes through the fermentation cylinder (1) and extends outward. A motor (4) is installed on the outer wall of the fermentation cylinder (1), and the output end of the motor (4) is connected to the extended end of the rotating shaft (82) for driving the rotating shaft (82) to rotate. An elastic telescopic rod (83) is fixedly connected to the top of the inner wall of the fixing ring (74); An elliptical disk (87) is fixedly connected to the outer wall of the rotating shaft (82), and the outer wall of the elliptical disk (87) is in contact with the bottom telescopic end of the elastic telescopic rod (83); Two arc-shaped rod sleeves (85) are respectively hinged on the fixed plate (81) and located on both sides of the rotating shaft (82) for moving tea leaves; An arc-shaped rod (84) has one end hinged to the outer wall of the telescopic end of the elastic telescopic rod (83), and the other end hinged to the arc-shaped rod sleeve (85), and is used to move the arc-shaped rod sleeve (85) to deflect and move the tea leaves; The dispersion mechanism (8) further comprises: The arc rod 2 (86) is movably connected to the inner wall of the arc rod sleeve (85), and is pushed by the return spring on its inner wall to move the arc rod 2 (86) outward to fit the inner wall of the fixing ring (74); The shifting plate (88) is arranged on the second arc-shaped rod (86) and is used to move along with the second arc-shaped rod (86) and shift the tea leaves.

2. A tea processing fermentation equipment according to claim 1, characterized in that: The arc-shaped rod (86) is provided with a movable hole (861), and the shift plate (88) is movable in the movable hole (861). The bottom of the shift plate (88) is arranged in an arc shape and contacts the shift rod (75). A plurality of spring pieces (862) are respectively connected to both sides of the shift plate (88) for resetting the shift plate (88).

3. A tea processing fermentation equipment according to claim 2, characterized in that: The shifting plate (88) is provided with a plurality of through holes, and when the shifting plate (88) shifts the tea leaves, the through holes are used to allow the tea leaves to ventilate.

4. A tea processing fermentation equipment according to claim 3, characterized in that: The dredging mechanism (9) comprises: The connecting rods (91) are respectively fixedly connected to the hinge rods of the arc rod (84) and are used to move up and down following the elastic telescopic rod (83); The second elastic telescopic rod (92) is fixedly connected to the top of the connecting rod (91), and the output end of the second elastic telescopic rod (92) is fixedly connected to a dredging rod (93) for dredging the filter holes of the rotating drum (6).

5. A tea processing fermentation equipment according to claim 4, characterized in that: A plurality of bristles are provided above the outer wall of the dredging rod (93), and the bristles clean the clogged inner wall of the filter hole when the dredging rod (93) moves up and down.

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