Sieve plate of black tea fermentation machine

Abstract

The utility model relates to the technical field of black tea processing equipment, and discloses a black tea fermentation machine sieve plate which comprises a hollow bottom plate and a sieve plate body arranged above the bottom plate, a plurality of exhaust holes are evenly distributed in the top face of the bottom plate, an air inlet communicated with an air inlet pipe is formed in one side of the bottom plate, and intermittent exhaust mechanisms are arranged at the exhaust holes. The sieve plate is composed of a plurality of independent ventilation units, the adjacent ventilation units are hinged to each other, the hinged ends of the adjacent ventilation units are rotationally connected with the intermittent exhaust mechanism through driving rods, and the other hinged ends of the adjacent ventilation units are fixedly connected with the top of the bottom plate through supporting rods. The two ventilation units located at the most end are hinged to the side plates on the two sides of the hollow bottom plate correspondingly. The tea leaf fermentation device can ensure that tea leaves can be in full contact with airflow in a fermentation environment, cannot be stacked and can be in full contact with oxygen, so that the fermentation effect is better, the fermentation efficiency is higher, the structure is simple, and the design is ingenious.

Description

Technical Field

[0001] The utility model relates to the technical field of black tea processing equipment, in particular to a sieve plate of a black tea fermentation machine. Background Art

[0002] Fermentation of fresh leaves is an important step in the initial production of black tea. The black tea fermentation machine lays the black tea on the sieve plate and ferments the tea using the humidity and temperature adjusted in the fermentation machine. Due to the stacking of tea leaves when laying, the wind can only blow to the tea leaves on the surface during fermentation ventilation, while the tea leaves stacked and pressed at the bottom cannot be ventilated, resulting in insufficient oxygen, causing some tea leaves to lack oxygen during fermentation, affecting the fermentation effect, and the fermentation time required under hypoxic conditions is also longer, and the fermentation efficiency is low, which needs to be improved urgently. Utility Model Content

[0003] The utility model aims to provide a sieve plate of a black tea fermentation machine, which controls the intermittent exhaust of gas through the exhaust hole through the intermittent exhaust mechanism and drives the end of each ventilation unit connected to it to shake up and down through the driving rod, so that the tea leaves on each ventilation unit are tumbled up and down under the action of the intermittent airflow, and the tea leaves fallen on each ventilation unit are constantly tumbling left and right, ensuring that the tea leaves can fully contact with the airflow in the fermentation environment, the tea leaves will not be stacked, and can fully contact with oxygen, so that the fermentation effect is better and the fermentation efficiency is higher.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A sieve plate of a black tea fermentation machine comprises a hollow bottom plate and a sieve plate arranged above the bottom plate, a plurality of exhaust holes are evenly distributed on the top surface of the bottom plate, an air inlet connected to an air inlet pipe is arranged on one side of the bottom plate, an intermittent exhaust mechanism is arranged at each exhaust hole, the sieve plate is composed of a plurality of independent air permeable units, adjacent air permeable units are hinged to each other, one end of the adjacent air permeable units being hinged to each other is rotatably connected to the intermittent exhaust mechanism through a driving rod, the other end of the adjacent air permeable units being hinged to each other is fixedly connected to the top of the bottom plate through a supporting rod, and the two air permeable units located at the end are respectively hinged to the side plates on both sides of the hollow bottom plate.

[0006] By adopting the above technical scheme, the air inlet pipe continuously fills the inner cavity of the bottom plate with gas matching the fermentation environment through the air inlet, and the gas in the bottom plate is intermittently discharged through the exhaust holes at a set frequency under the action of the intermittent exhaust mechanism, and the exhausted gas is directly blown to each ventilation unit, so that intermittent airflow is generated on the top surface of each ventilation unit, and the tea leaves on each ventilation unit are tumbled up and down under the action of the airflow. At the same time, the intermittent exhaust mechanism controls the intermittent exhaust of gas from the exhaust holes and drives the end of each ventilation unit connected to it to shake up and down through the driving rod, so that the angle of each ventilation unit is constantly changing, so that the tea leaves falling on each ventilation unit are constantly tumbling left and right, ensuring that the tea leaves can fully contact with the airflow in the fermentation environment, the tea leaves will not be stacked, and can fully contact with oxygen, so that the fermentation effect is better and the fermentation efficiency is higher.

[0007] The utility model is further configured as follows: each of the ventilation units includes a telescopic plate and a sleeve plate, the telescopic plate is located in the inner cavity of the sleeve plate and slidingly cooperates with the sleeve plate, one end of the sleeve plate away from the telescopic plate is rotatably connected to the intermittent exhaust mechanism, and one end of the telescopic plate away from the sleeve plate is hinged to the telescopic plate in the adjacent ventilation unit.

[0008] By adopting the above technical solution, since the position of the point where the air permeable unit is connected to the support rod is fixed, and the point where the air permeable unit is connected to the driving rod is intermittently moving, when the angle of each air permeable unit is constantly changing, the length of the air permeable unit will change, so the telescopic plate will slide back and forth relative to the sleeve plate, ensuring that the adjacent air permeable units can always maintain a tight connection when the angle of each air permeable unit is constantly changing, thereby ensuring that the tea leaves on each air permeable unit will not fall off.

[0009] The utility model is further configured as follows: the telescopic plate and the sleeve plate are both porous air-permeable plates.

[0010] By adopting the above technical solution, the porous air-permeable plate can ensure that the tea leaves can fully contact with the air, thereby ensuring a good fermentation effect.

[0011] The utility model is further configured as follows: the air inlet on the base plate is circular, the intermittent exhaust mechanism includes a sphere matching the diameter of the air inlet on the base plate, the bottom of the sphere is fixed to the bottom surface of the inner cavity of the base plate by a spring, the top of the sphere is fixedly connected to the bottom of the driving rod, and the top of the driving rod is rotatably connected to one end of the sleeve plate away from the telescopic plate.

[0012] By adopting the above technical solution, the sphere is located in the air inlet under the action of the spring force and the cross-section where the maximum diameter of the sphere is located is opposite to the lower end opening of the air inlet. At this time, the air inlet is sealed by the sphere. After the air inlet pipe continuously fills the inner cavity of the bottom plate with gas matching the fermentation environment through the air inlet, the pressure in the inner cavity of the bottom plate begins to increase continuously. The sphere overcomes the spring force and continues to rise under the action of the pressure in the inner cavity of the bottom plate. When it rises to a horizontal state of each air permeable unit, the cross-section where the maximum diameter of the sphere is located is opposite to the upper end opening of the air inlet. At this time, the air inlet is still sealed by the sphere. As the air inlet pipe continues to intake air, the pressure in the inner cavity of the bottom plate continues to increase, and the sphere continues to rise. The cross section where the large diameter is located begins to leave the upper opening of the air inlet, so that a gap is generated between the sphere and the air inlet. The air inlet is opened, and the gas in the inner cavity of the bottom plate is quickly discharged from the gap, and the pressure in the inner cavity of the bottom plate is quickly restored to an initial state. At this time, the sphere falls rapidly under the action of its own gravity and the restoring force of the spring to a position where the cross section where its maximum diameter is located is opposite to the lower opening of the air inlet, and then the above process is repeated reciprocally, so that the sphere rises and falls reciprocally, and the gas in the inner cavity of the bottom plate is intermittently discharged, so that the tea leaves on each ventilation unit are tumbled up and down under the action of intermittent airflow, and the tea leaves falling on each ventilation unit are constantly tumbling left and right. The structure is simple and the design is ingenious.

[0013] The utility model is further configured as follows: the height of the side panels is always higher than the upper surface of each ventilation unit.

[0014] By adopting the above technical solution, the side panels are used to limit the tea leaves on the ventilation units at both ends, so that the tea leaves on the ventilation units at both ends will not fall to the ground and cause waste of tea leaves during the process of rolling left and right.

[0015] The beneficial effects of the utility model are:

[0016] 1. In the utility model, the air inlet pipe continuously fills the inner cavity of the bottom plate with gas matching the fermentation environment through the air inlet, and the gas in the bottom plate is intermittently discharged through the exhaust holes at a set frequency under the action of the intermittent exhaust mechanism, and the exhausted gas is directly blown to each ventilation unit, so that intermittent airflow is generated on the top surface of each ventilation unit, and the tea leaves on each ventilation unit are tumbled up and down under the action of the airflow. At the same time, the intermittent exhaust mechanism controls the exhaust holes to intermittently discharge gas and drives the end of each ventilation unit connected to it to shake up and down through the driving rod, so that the angle of each ventilation unit is constantly changing, so that the tea leaves falling on each ventilation unit are constantly tumbling left and right, ensuring that the tea leaves can fully contact with the airflow in the fermentation environment, the tea leaves will not be stacked, and can fully contact with oxygen, so that the fermentation effect is better and the fermentation efficiency is higher.

[0017] 2. The intermittent exhaust mechanism in the utility model utilizes the sphere to be located in the air inlet under the action of the spring force and the cross section where the maximum diameter of the sphere is located is opposite to the lower end opening of the air inlet, thereby sealing the air inlet. After the air inlet pipe continuously fills the inner cavity of the bottom plate with gas matching the fermentation environment through the air inlet, the pressure in the inner cavity of the bottom plate begins to increase continuously. The sphere overcomes the spring force and continues to rise under the action of the pressure in the inner cavity of the bottom plate. When it rises to a horizontal state of each air permeable unit, the cross section where the maximum diameter of the sphere is located is opposite to the upper end opening of the air inlet. At this time, the air inlet is still sealed by the sphere. As the air inlet pipe continues to intake air, the pressure in the inner cavity of the bottom plate continues to increase, and the sphere continues to rise. At this time, the The cross section where the maximum diameter is located begins to leave the upper opening of the air inlet, so that a gap is generated between the sphere and the air inlet. The air inlet is opened, and the gas in the inner cavity of the bottom plate is quickly discharged from the gap, and the pressure in the inner cavity of the bottom plate is quickly restored to an initial state. At this time, the sphere falls rapidly under the action of its own gravity and the restoring force of the spring to a position where the cross section where the maximum diameter is located is opposite to the lower opening of the air inlet, and then the above process is repeated reciprocally, so that the sphere rises and falls reciprocally, and the gas in the inner cavity of the bottom plate is intermittently discharged, so that the tea leaves on each ventilation unit are tumbled up and down under the action of intermittent airflow, and the tea leaves falling on each ventilation unit are constantly tumbling left and right. The structure is simple and the design is ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 The utility model is a schematic diagram of the cross-sectional structure of a sieve plate of a black tea fermentation machine at the initial stage.

[0020] Figure 2 The utility model is a schematic diagram of a state in which a cross section where the maximum diameter of a sphere in an intermittent exhaust mechanism in a sieve plate of a black tea fermentation machine is located is opposite to the upper end opening of an air inlet.

[0021] Figure 3 It is a schematic diagram of the state when a sphere in an intermittent exhaust mechanism in a sieve plate of a black tea fermentation machine of the utility model rises to a cross section where its maximum diameter is located and leaves the upper end opening of the air inlet.

[0022] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of each air permeable unit in a sieve plate of a black tea fermentation machine.

[0023] Figure 5The utility model is a structural schematic diagram of a bottom plate in a sieve plate of a black tea fermentation machine.

[0024] In the figure, 1, bottom plate; 2, sieve plate; 3, exhaust hole; 4, air inlet; 5, intermittent exhaust mechanism; 51, sphere; 52, spring; 6, ventilation unit; 61, telescopic plate; 62, sleeve plate; 7, driving rod; 8, side plate; 9, support rod. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 5 As shown, a sieve plate of a black tea fermentation machine comprises a hollow bottom plate 1 and a sieve plate 2 arranged above the bottom plate 1, a plurality of exhaust holes 3 are evenly distributed on the top surface of the bottom plate 1, an air inlet 4 connected to an air inlet pipe is provided on one side of the bottom plate 1, an intermittent exhaust mechanism 5 is provided at each exhaust hole 3, the sieve plate 2 is composed of a plurality of independent air permeable units 6, adjacent air permeable units 6 are hinged to each other, the points where adjacent air permeable units 6 are hinged to each other are rotatably connected to the intermittent exhaust mechanism 5 through a driving rod 7, the other ends of the adjacent air permeable units 6 are hinged to each other and are fixedly connected to the top of the bottom plate 1 through a supporting rod 9, and the two air permeable units 6 located at the end are respectively hinged to the side plates 8 on both sides of the hollow bottom plate 1.

[0027] Furthermore, each of the ventilation units 6 includes a telescopic plate 61 and a sleeve plate 62, the telescopic plate 61 is located in the inner cavity of the sleeve plate 62 and slidably cooperates with the sleeve plate 62, the end of the sleeve plate 62 away from the telescopic plate 61 is rotatably connected to the intermittent exhaust mechanism 5, and the end of the telescopic plate 61 away from the sleeve plate 62 is hinged to the telescopic plate 61 in the adjacent ventilation unit 6.

[0028] Furthermore, the telescopic plate 61 and the sleeve plate 62 are both porous air-permeable plates.

[0029] Furthermore, the air inlet 4 on the base plate 1 is circular, and the intermittent exhaust mechanism 5 includes a sphere 51 that matches the diameter of the air inlet 4 on the base plate 1. The bottom of the sphere 51 is fixed to the bottom surface of the inner cavity of the base plate 1 by a spring 52, and the top of the sphere 51 is fixedly connected to the bottom of the driving rod 7, and the top of the driving rod 7 is rotatably connected to the end of the sleeve plate 62 away from the telescopic plate 61.

[0030] Furthermore, the height of the side panels 8 is always higher than the upper surface of each ventilation unit 6 .

[0031] Working principle of the utility model: initially, the ball 51 is located in the air inlet 4 under the action of the spring force and the cross section where the maximum diameter of the ball 51 is located is opposite to the lower end opening of the air inlet 4. At this time, the air inlet 4 is sealed by the ball 51 (such as Figure 1 As shown), the air inlet pipe is then used to continuously fill the inner cavity of the bottom plate 1 with gas that matches the fermentation environment through the air inlet 4, so that the pressure in the inner cavity of the bottom plate 1 begins to increase continuously. Under the action of the pressure in the inner cavity of the bottom plate 1, the sphere 51 overcomes the spring force and continues to rise. When it rises to a level state where each air permeable unit 6 is horizontal, the cross section where the maximum diameter of the sphere 51 is located is opposite to the upper end opening of the air inlet 4. At this time, the air inlet 4 is still sealed by the sphere 51 (as shown in FIG. 1 ). Figure 2 As shown in FIG. 1 , as the air intake pipe continues to intake air, the pressure in the inner cavity of the bottom plate 1 continues to increase, and the sphere 51 continues to rise. At this time, the cross section of the sphere 51 with the largest diameter begins to leave the upper end opening of the air inlet 4, so that a gap is generated between the sphere 51 and the air inlet 4, and the air inlet 4 is opened (as shown in FIG. 1 ). Figure 3 As shown in the figure, the gas in the inner cavity of the bottom plate 1 is quickly discharged from the gap, and the pressure in the inner cavity of the bottom plate 1 is quickly restored to the initial state. At this time, the sphere 51 falls rapidly to a position where the cross section of its maximum diameter is opposite to the lower end opening of the air inlet 4 under the action of its own gravity and the restoring force of the spring 52, and then the above process is repeated reciprocally, so that while the sphere 51 rises and falls reciprocally, the gas in the inner cavity of the bottom plate 1 is intermittently discharged, and the discharged gas is directly blown to each air permeable unit 6, so that intermittent airflow is generated on the top surface of each air permeable unit 6, and the tea leaves on each air permeable unit 6 are tumbled up and down under the action of the airflow. At the same time, During the rising and falling process of the sphere 51, the driving rod 7 will drive the end of each ventilation unit 6 connected to it to shake up and down, so that the angle of each ventilation unit 6 is constantly changing, so that the tea leaves falling on each ventilation unit 6 are constantly rolling left and right. Therefore, the tea leaves on each ventilation unit 6 are rolled up and down under the action of intermittent airflow, and the tea leaves falling on each ventilation unit 6 are constantly rolling left and right, ensuring that the tea leaves can fully contact with the airflow in the fermentation environment, the tea leaves will not be stacked, and can be fully in contact with oxygen, so that the fermentation effect is better, the fermentation efficiency is higher, the structure is simple, and the design is ingenious.

Claims

1. A sieve plate for a black tea fermentation machine, characterized in that: The invention comprises a hollow bottom plate (1) and a sieve plate (2) arranged above the bottom plate (1), wherein a plurality of exhaust holes (3) are evenly distributed on the top surface of the bottom plate (1), an air inlet (4) connected to an air inlet pipe is provided on one side of the bottom plate (1), and an intermittent exhaust mechanism (5) is provided at each exhaust hole (3), and the sieve plate (2) is composed of a plurality of independent air permeable units (6), wherein adjacent air permeable units (6) are hinged to each other, and one end of the adjacent air permeable units (6) being hinged to each other is rotatably connected to the intermittent exhaust mechanism (5) via a driving rod (7), and the other end of the adjacent air permeable units (6) being hinged to each other is fixedly connected to the top of the bottom plate (1) via a supporting rod (9), and the two air permeable units (6) at the end are respectively hinged to the side plates (8) on both sides of the hollow bottom plate (1).

2. A black tea fermentation machine sieve plate (2) according to claim 1, characterized in that: Each of the ventilation units (6) comprises a telescopic plate (61) and a sleeve plate (62); the telescopic plate (61) is located in the inner cavity of the sleeve plate (62) and is slidably matched with the sleeve plate (62); one end of the sleeve plate (62) away from the telescopic plate (61) is rotatably connected to the intermittent exhaust mechanism (5); and one end of the telescopic plate (61) away from the sleeve plate (62) is hinged to the telescopic plate (61) in the adjacent ventilation unit (6).

3. A black tea fermentation machine sieve plate (2) according to claim 2, characterized in that: The telescopic plate (61) and the sleeve plate (62) are both porous air-permeable plates.

4. A black tea fermentation machine sieve plate (2) according to claim 3, characterized in that: The air inlet (4) on the bottom plate (1) is circular, and the intermittent exhaust mechanism (5) comprises a sphere (51) having a diameter matching that of the air inlet (4) on the bottom plate (1). The bottom of the sphere (51) is fixed to the bottom surface of the inner cavity of the bottom plate (1) via a spring (52), the top of the sphere (51) is fixedly connected to the bottom of the driving rod (7), and the top of the driving rod (7) is rotatably connected to an end of the sleeve plate (62) away from the telescopic plate (61).

5. The black tea fermentation machine sieve plate (2) according to claim 1, characterized in that: The height of the side plate (8) is always higher than the upper surface of each ventilation unit (6).

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