Fermentation device for processing polygonatum sibiricum black tea

Abstract

The invention discloses a fermentation device for processing polygonatum sibiricum black tea, and relates to the technical field of tea processing, the fermentation device comprises a fermentation box and an oxygen storage tank, and an LED lamp is also arranged in the fermentation box; the device further comprises two supporting plates, an elastic net plate assembly, a one-way exhaust assembly, an upper pressing plate assembly and a lower pressing plate assembly, and the two supporting plates are symmetrically distributed on the inner walls of the two sides of the fermentation box. The elastic net plate assembly is arranged between the two supporting plates in a matched mode. The first pressing plate and the second pressing plate extrude gas in the upper space and the lower space of the elastic net plate assembly, piston exhaust motion is formed, waste gas generated by tea leaves in the fermentation process is automatically extruded out, when the electric telescopic rod retracts and resets, the first pressing plate and the second pressing plate slide back and resets, piston suction motion is formed, and the tea leaves are fermented. Oxygen can be conveniently sucked into the fermentation box from the oxygen storage tank through the air inlet hole, automatic exhaust and oxygen feeding are achieved, manual operation treatment is not needed, labor intensity is reduced, and fermentation operation convenience and operation efficiency are improved.

Description

Technical Field

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

[0002] Polygonatum sibiricum black tea is a beverage with traditional Chinese medicine characteristics. It is made from polygonatum sibiricum and black tea. According to traditional Chinese medicine, both polygonatum sibiricum and black tea help nourish the kidneys and strengthen the body. Therefore, polygonatum sibiricum black tea is believed to have the effect of replenishing essence and benefiting the kidneys. Polygonatum sibiricum black tea generally needs to be fermented during the production process. Through the fermentation process, the beneficial bacteria in the tea leaves and polygonatum sibiricum are activated.

[0003] The fermentation step in the production process of Polygonatum odoratum black tea is carried out under LED light. The mixed tea leaves and Polygonatum odoratum are placed in a fermentation box, and then LED light is used for light fermentation. The temperature of the fermentation box is set to 36-38°C and the humidity is 86-90%. Then, exhaust and oxygen are supplied every 10 minutes or so. The exhaust is mainly to discharge the waste gas generated by the fermentation of tea leaves, and then oxygen is filled in to continue fermentation. At the same time, the tea leaves need to be turned to promote the discharge of waste gas between the tea leaves, promote the uniform mixing between the tea leaves and Polygonatum odoratum, and increase the contact area between the beneficial bacteria and the tea leaves and Polygonatum odoratum.

[0004] The shortcomings of the existing fermentation of Polygonatum sibiricum black tea are that: the existing fermentation process of Polygonatum sibiricum black tea generally relies on manual control of exhaust and oxygen supply in sequence. Since the fermentation takes a certain period of time, exhaust and oxygen supply need to be performed alternately for many times during the fermentation process. This has high labor intensity, cumbersome operation, and is not convenient enough, resulting in low processing efficiency. In addition, the tea leaves need to be turned over during the fermentation process. In order to avoid damaging the tea leaves, the tea leaves are generally turned over gently by hand, which also increases labor intensity and is not convenient enough to operate. In addition, the fermentation box needs to be opened for operation, which makes exhaust and oxygen supply inconvenient. Summary of the invention

[0005] The purpose of the present invention is to provide a fermentation device for processing polygonatum sibiricum black tea, so as to solve the technical problems in the prior art that the exhaust and oxygen supply operation during the fermentation process of polygonatum sibiricum black tea is not convenient, the manual labor intensity is high, and the processing efficiency is low.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A fermentation device for processing polygonatum black tea, comprising a fermentation box and an oxygen storage tank, wherein an LED lamp is arranged inside the fermentation box; an oxygen supply pipeline is arranged at the bottom of the oxygen storage tank, and an air inlet hole connected with the oxygen supply pipeline is arranged on the inner wall of the fermentation box, and further comprising:

[0008] Support plates, wherein two support plates are provided and symmetrically distributed on the inner walls of both sides of the fermentation box;

[0009] An elastic mesh plate assembly, wherein the elastic mesh plate assembly is cooperatively arranged between the two support plates;

[0010] One-way exhaust components, wherein two groups of the one-way exhaust components are provided and are respectively arranged on both sides of the fermentation box;

[0011] An upper pressing plate assembly, the upper pressing plate assembly comprising a first pressing plate and an electric telescopic rod, the first pressing plate being cooperatively arranged on the upper side of the fermentation box, the electric telescopic rod being connected to the top of the fermentation box, and an elastic telescopic connecting piece being arranged at the telescopic end of the electric telescopic rod, the telescopic end of the electric telescopic rod being connected to the first pressing plate through the elastic telescopic connecting piece;

[0012] The lower pressure plate assembly includes a second pressure plate, a lifting guide rod and a linkage assembly. The second pressure plate is arranged at the lower side of the inside of the fermentation box. The lifting guide rod is connected below the second pressure plate. A limiting spring is connected between the bottom end of the lifting guide rod and the outer wall of the fermentation box. The linkage assembly is arranged between the lifting guide rod and the telescopic end of the electric telescopic rod.

[0013] As a further solution of the present invention: the elastic mesh assembly includes a connecting frame, an elastic mesh body, an iron block and a magnet, the connecting frame is cooperatively arranged between the two support plates, the elastic mesh body is connected in the connecting frame, the iron block is arranged at the bottom of the elastic mesh body, and a docking protrusion is arranged on the rear side of the bottom of the iron block, a limiting slide groove cooperating with the docking protrusion is vertically opened on the inner wall of the fermentation box, the magnet is arranged in the middle position of the second pressure plate, and the magnet is aligned with the iron block.

[0014] As a further solution of the present invention: the linkage assembly includes a traction steel wire, a guide rail, a linkage slider, a steering pulley and a convex plate, the guide rail is vertically connected to the top rear side of the fermentation box, the linkage slider is slidably connected to the guide rail, and a first support spring is connected between the linkage slider and the bottom of the guide rail, the two ends of the traction steel wire are respectively connected to the linkage slider and the lifting guide rod, the steering pulley is arranged at the top of the guide rail, and the steering pulley cooperates with the traction steel wire, and in order to facilitate the sliding of the traction steel wire relative to the fermentation box, the convex plate is arranged at the telescopic end of the electric telescopic rod, and the convex plate is aligned with the linkage slider.

[0015] As a further solution of the present invention: the elastic telescopic connecting member includes a connecting sleeve and a second supporting spring, the connecting sleeve is slidably sleeved on the telescopic end of the electric telescopic rod, and the bottom end of the connecting sleeve is fixedly connected to the first pressure plate, and the second supporting spring is connected between the connecting sleeve and the telescopic end of the electric telescopic rod.

[0016] As a further solution of the present invention: the one-way exhaust assembly includes an exhaust hole and a second one-way valve, the exhaust hole is arranged on the side wall of the fermentation box close to the support plate, an exhaust pipe connected to the exhaust hole is arranged on the outer wall of the fermentation box, and the second one-way valve is arranged on the exhaust pipe.

[0017] As a further solution of the present invention: the oxygen supply pipeline includes a connecting pipe, a first one-way valve and a manual valve, the connecting pipe is connected between the air inlet and the oxygen storage tank, the first one-way valve is arranged at one end of the connecting pipe close to the air inlet; the manual valve is installed on the connecting pipe.

[0018] As a further solution of the present invention: limiting protrusions are fixedly provided on the upper sides of the two support plates.

[0019] As a further solution of the present invention: a pressure sensing switch is arranged on the limit protrusion, and negative pressure air pumps electrically connected to the pressure sensing switch are fixedly arranged on the outer walls on both sides of the fermentation box, and the negative pressure end of the negative pressure air pump is connected to the corresponding exhaust hole.

[0020] As a further solution of the present invention: a window is provided on the rear side wall of the fermentation box.

[0021] As a further solution of the present invention: the LED lamps are provided in two groups and are respectively arranged on the first pressing plate and the second pressing plate.

[0022] Beneficial effects of the present invention:

[0023] 1. The present invention relies on an elastic mesh plate assembly to hold Polygonatum odoratum black tea, and the elastic mesh plate assembly relies on a pair of supporting plates to be suspended in the fermentation box, so that the upper and lower layers of the tea leaves are heated and fermented, and the fermentation effect is improved. At regular intervals, the electric telescopic rod is extended and retracted once. Each time the electric telescopic rod is extended, the first pressing plate is driven to descend and press toward the elastic mesh plate assembly through the elastic telescopic connecting piece. When the first pressing plate stops, the telescopic end of the electric telescopic rod squeezes the elastic telescopic connecting piece, thereby driving the linkage slider through the convex plate driving action. The linkage slider relies on the traction wire to pull the lifting guide rod to rise, thereby relying on the lifting guide rod to drive the second pressing plate below to rise, so that it is convenient to rely on the first pressing plate and the second pressing plate to squeeze the gas in the upper and lower spaces of the elastic mesh plate assembly to form a piston exhaust movement, and automatically press out the waste gas generated by the tea leaves during the fermentation process. When the electric telescopic rod is retracted and reset, the first pressing plate and the second pressing plate slide back and reset again, forming a piston suction movement, which is convenient for relying on the air inlet to absorb oxygen from the oxygen storage tank into the fermentation box, so as to realize automatic exhaust and oxygen intake, without the need for manual operation, reducing labor intensity, and improving the convenience and efficiency of fermentation operation.

[0024] 2. In the present invention, whenever the second pressing plate is raised, the magnet arranged on the second pressing plate is attracted to the iron block on the elastic mesh body in the elastic mesh plate assembly. Then, when the second pressing plate is lowered, the iron block is driven to lower by the magnet, thereby pulling the elastic mesh body to be concave. Since the iron block is docked with the limiting slide groove on the inner wall of the fermentation box by the docking protrusion, when the docking protrusion slides down to the bottom of the limiting slide groove, it is limited and cannot slide down. At this time, the second pressing plate continues to slide down, the magnet is separated from the iron block, and the elastic mesh body rebounds instantly, thereby ejecting the tea leaves laid on the upper layer, so that the laid tea leaves move, which is convenient for the exhaust gas between the leaves to be dispersed, and also convenient for the tea leaves to be turned over, thereby improving the fermentation effect. At the same time, it can also prevent external equipment from directly acting on the tea leaves, thereby preventing the tea leaves from being damaged.

[0025] 3. A limiting protrusion is arranged on the upper side of the support plate of the present invention, which is used to prevent the first pressing plate from being completely pressed down onto the tea leaves and causing damage to the tea leaves. Although the limiting protrusion hinders the first pressing plate, preventing it from being completely pressed down and fully pressing out the gas, a pressure sensing switch is distributed on the limiting protrusion. When the pressure sensing switch is pressurized, the distributed negative pressure air pump is operated, and the negative pressure air pump assists in exhausting air to fully extract the exhaust gas inside the fermentation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 3 It is a left-side structural schematic diagram of the coordinated arrangement of the traction wire and the convex plate in the present invention;

[0030] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 5 It is a schematic diagram of the state when the first pressing plate and the second pressing plate press against the elastic net body after the electric telescopic rod is extended in the present invention;

[0032] Figure 6 It is a schematic diagram of the state when the second pressing plate in the present invention pulls down the elastic mesh body through the magnet and the iron block adsorbed to each other;

[0033] Figure 7 It is a left-side structural schematic diagram of the elastic net body and the iron block in the present invention.

[0034] In the figure: 1. fermentation box; 2. first pressure plate; 3. connecting sleeve; 4. second supporting spring; 5. electric telescopic rod; 6. timed cycle start controller; 7. temperature control component; 8. humidity control component; 9. second pressure plate; 10. support plate; 11. magnet; 12. LED lamp; 13. oxygen storage tank; 14. connecting pipe; 15. manual valve; 16. lifting guide rod; 17. limit spring; 18. window; 19. air inlet; 20. connecting frame; 21. elastic mesh; 22. limit slide; 23. negative pressure air pump; 24. second one-way valve; 25. exhaust hole; 26. traction wire; 27. sealed box door; 28. convex plate; 29. ​​linkage slider; 30. guide rail; 31. first supporting spring; 32. steering pulley; 33. docking convex piece; 34. limit convex block; 35. iron block. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in 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.

[0036] like Figure 1-Figure 7 As shown, a fermentation device for processing Polygonatum odoratum black tea includes a fermentation box 1 and an oxygen storage tank 13. A temperature control component 7 and a humidity control component 8 are arranged on the inner wall of the fermentation box 1. When the temperature control component 7 and the humidity control component 8 are arranged, they do not protrude from the inner wall of the fermentation box 1, and can be installed in a recessed or flat manner; the humidity control component 8 includes a sensor, a control circuit and an adjustment device. The sensor is used to detect the humidity in the environment and convert it into an electrical signal. The control circuit compares and calculates the signal of the sensor and the set humidity value, and then outputs a control signal. The adjustment device adjusts the humidity according to the control signal, for example, by adjusting the operating state of the humidifier or dehumidifier to increase or decrease the humidity; the temperature control component 7 also includes a sensor, a control circuit and an adjustment device, wherein the adjustment device adjusts the temperature according to the control signal, for example, by heating by a heating component or cooling by a cooling component; in this way, the humidity control component 8 and the temperature control component 7 can control the temperature and humidity inside the fermentation box 1; an LED lamp 12 for providing lighting conditions is also arranged inside the fermentation box 1;

[0037] The oxygen storage tank 13 is filled with oxygen, and an oxygen supply pipeline is arranged at the bottom. An air inlet 19 connected to the oxygen supply pipeline is arranged on the inner wall of the back of the fermentation box 1. A sealed box door 27 is arranged on the front of the fermentation box 1. The sealed box door 27 can open the fermentation box 1, so as to facilitate the placement of the polygonatum black tea raw material into the fermentation box 1.

[0038] The device also includes a support plate 10, an elastic mesh assembly, a one-way exhaust assembly, an upper pressing plate assembly and a lower pressing plate assembly; two support plates 10 are provided and symmetrically distributed on the inner walls of both sides of the fermentation box 1, and the support plates 10 are at a certain distance from the bottom of the fermentation box 1; the elastic mesh assembly is cooperatively arranged between the two support plates 10, and the elastic mesh assembly is used to lay the Huangjing black tea to be fermented, and because it is supported by the support plate 10, it is convenient to make the laid tea leaves suspended in the air, and the upper and lower layers can be heated, which is convenient for fermentation;

[0039] Two sets of one-way exhaust components are provided, and are respectively arranged on both sides of the fermentation box 1. The one-way exhaust components are aligned with the elastic mesh components. The one-way exhaust components facilitate the one-way discharge of waste gas generated by tea fermentation inside the fermentation box 1, without air intake;

[0040] The upper pressing plate assembly includes a first pressing plate 2 and an electric telescopic rod 5. The first pressing plate 2 is cooperatively arranged on the upper side of the fermentation box 1. The outer contour of the first pressing plate 2 matches the internal space of the fermentation box 1. The electric telescopic rod 5 is fixedly connected to the top of the fermentation box 1, and the telescopic end of the electric telescopic rod 5 is provided with an elastic telescopic connector. The elastic telescopic connector runs through the top of the fermentation box 1. The telescopic end of the electric telescopic rod 5 is connected to the first pressing plate 2 through the elastic telescopic connector. A timing cycle start controller 6 electrically connected to the electric telescopic rod 5 is provided on the outer wall of the top of the fermentation box 1. The timing cycle start controller 6 is used to set and control the electric telescopic rod 5 to perform telescopic operation once at regular intervals, and is convenient for adjusting the operation interval length.

[0041] The lower pressing plate assembly includes a second pressing plate 9, a lifting guide rod 16 and a linkage assembly. The second pressing plate 9 is arranged at the lower side of the fermentation box 1. The outer contour of the second pressing plate 9 also matches the internal space of the fermentation box 1. The lifting guide rod 16 is fixedly connected below the second pressing plate 9, and the lifting guide rod 16 passes through the bottom of the fermentation box 1. A limit spring 17 is connected between the bottom end of the lifting guide rod 16 and the outer wall of the fermentation box 1. The limit spring 17 is compressible. The linkage assembly is arranged between the lifting guide rod 16 and the telescopic end of the electric telescopic rod 5.

[0042] It should be noted that, in order to facilitate the LED lamp 12 to illuminate the tea leaves, two groups of LED lamps 12 are provided, and are respectively arranged on the first pressing plate 2 and the second pressing plate 9, and the LED lamps 12 are embedded in the corresponding end faces of the pressing plates, and are arranged in a concave manner to avoid the first pressing plate 2 and the second pressing plate 9 from crushing the LED lamps 12 when they move, and at the same time, it is convenient for the upper and lower layers of tea leaves laid on the elastic mesh assembly to be illuminated, which is convenient for fermentation;

[0043] And at regular intervals, the electric telescopic rod 5 is extended and retracted once. When the telescopic end of the electric telescopic rod 5 is extended downward, the first pressing plate 2 is driven downward by the elastic telescopic connecting piece. At this time, the first pressing plate 2 compresses the gas inside the fermentation box 1 downward. The first pressing plate 2 is pressed to the upper layer of the elastic mesh assembly and then stops. At this time, the electric telescopic rod 5 continues to extend, and then begins to compress the elastic telescopic connecting piece, and relies on the linkage assembly to drive the lifting guide rod 16 to rise upward. The lifting guide rod 16 drives the second pressing plate 9 to rise and press toward the lower layer of the elastic mesh assembly. In this process, the limit spring 17 is compressed to produce The first pressing plate 2 and the second pressing plate 9 form a piston suction movement, which makes it convenient to absorb oxygen from the oxygen storage tank 13 into the fermentation box 1 through the air inlet 19, so as to realize automatic air intake and exhaust.

[0044] It should be noted that the elastic telescopic connection member includes a connecting sleeve 3 and a second supporting spring 4, the connecting sleeve 3 is slidably sleeved on the telescopic end of the electric telescopic rod 5, and the bottom end of the connecting sleeve 3 is fixedly connected to the first pressing plate 2, and the second supporting spring 4 is connected between the connecting sleeve 3 and the telescopic end of the electric telescopic rod 5;

[0045] When the electric telescopic rod 5 is extended, due to the existence of the second supporting spring 4, the first pressure plate 2 can be pushed down by the connecting sleeve 3. When the first pressure plate 2 descends to the upper layer of the elastic mesh assembly and stops, the connecting sleeve 3 also stops. At this time, the electric telescopic rod 5 continues to extend, thereby compressing the second supporting spring 4.

[0046] It should also be noted that the above-mentioned linkage assembly includes a traction wire 26, a guide rail 30, a linkage slider 29, a steering pulley 32 and a convex plate 28. The guide rail 30 is vertically connected to the top rear side of the fermentation box 1, the linkage slider 29 is slidably connected to the guide rail 30, and a compressible first support spring 31 is connected between the linkage slider 29 and the bottom of the guide rail 30. The two ends of the traction wire 26 are respectively connected to the linkage slider 29 and the lifting guide rod 16. The steering pulley 32 is arranged on the top of the guide rail 30, and the steering pulley 32 cooperates with the traction wire 26. In order to facilitate the sliding of the traction wire 26 relative to the fermentation box 1, a fixed pulley that cooperates with the traction wire 26 can also be distributed at the corresponding position of the outer wall of the fermentation box 1. The convex plate 28 8 is arranged at the telescopic end of the electric telescopic rod 5, and the convex plate 28 is aligned with the linkage slider 29. When the telescopic end of the electric telescopic rod 5 pushes the first pressure plate 2 to descend through the elastic telescopic connecting piece, the convex plate 28 descends synchronously, and when the first pressure plate 2 is pressed to the upper position of the elastic mesh assembly and stops, the convex plate 28 just contacts the linkage slider 29. At this time, the electric telescopic rod 5 continues to extend, and the convex plate 28 descends to squeeze the linkage slider 29, pushing the linkage slider 29 to slide down along the guide rail 30 to compress the first support spring 31, and the linkage slider 29 pulls the traction wire 26, and the traction wire 26 relies on the steering action of the steering pulley 32 to pull the lifting guide rod 16 upward, and the lifting guide rod 16 drives the second pressure plate 9 to rise.

[0047] It should also be noted that the oxygen supply pipeline includes a connecting pipe 14, a first one-way valve and a manual valve 15. The connecting pipe 14 is connected between the air inlet 19 and the oxygen storage tank 13. The first one-way valve is arranged at one end of the connecting pipe 14 close to the air inlet 19. The first one-way valve allows oxygen to be discharged to the air inlet 19 only through the connecting pipe 14, and cannot flow back into the connecting pipe 14 from the air inlet 19; the manual valve 15 is installed on the connecting pipe 14, and the manual valve 15 is used to control the opening and closing of the connecting pipe 14.

[0048] It should also be noted that the one-way exhaust assembly includes an exhaust hole 25 and a second one-way valve 24. The exhaust hole 25 is arranged on the side wall of the fermentation box 1 close to the support plate 10, and two exhaust holes 25 are distributed on each side, corresponding to the upper and lower layers of the elastic mesh assembly respectively. The exhaust hole 25 at the lower side extends to the support plate 10, and an exhaust pipe connected to the exhaust hole 25 is arranged on the outer wall of the fermentation box 1. The second one-way valve 24 is arranged on the exhaust pipe. The second one-way valve 24 allows gas to be discharged only through the exhaust hole 25, and external gas cannot enter the interior of the fermentation box 1 through the exhaust hole 25; this facilitates one-way exhaust.

[0049] In some specific embodiments, in order to facilitate the tea leaves laid on the elastic mesh assembly to be turned over each time air is inhaled or exhausted to improve the fermentation effect, the elastic mesh assembly includes a connecting frame 20, an elastic mesh body 21, an iron block 35 and a magnet 11. The connecting frame 20 is cooperatively arranged between the two support plates 10, and the elastic mesh body 21 is connected in the connecting frame 20. The elastic mesh body 21 is used to lay tea leaves for heating and ventilation. The iron block 35 is arranged in the middle position of the bottom of the elastic mesh body 21, and a docking protrusion 33 is arranged at the rear side of the bottom of the iron block 35. A limiting slide groove 22 that cooperates with the docking protrusion 33 is vertically opened on the inner wall of the fermentation box 1. The magnet 11 is arranged in the middle position of the second pressing plate 9, and the magnet 11 is aligned with the iron block 35.

[0050] When the Huangjing black tea needs to be fermented, the tea leaves are first laid on the elastic mesh 21, and then the laid tea leaves are carried into the fermentation box 1 through the connecting frame 20, and the two ends of the connecting frame 20 are horizontally mounted on the support plate 10, and at this time, the end of the docking protrusion 33 connected to the iron block 35 is slidably inserted into the limiting slide groove 22, and then the sealed box door 27 is closed to start fermentation. Figure 5 As shown, each time the second pressing plate 9 rises and fits to the lower layer of the elastic net 21, the magnet 11 on the second pressing plate 9 just contacts and adsorbs the iron block 35;

[0051] like Figure 6 As shown, when the second pressing plate 9 descends and resets, since the magnet 11 and the iron block 35 are adsorbed together, the second pressing plate 9 first pulls the middle part of the elastic mesh body 21 to descend and become concave through the magnet 11 and the iron block 35. During this process, the docking protrusion 33 slides down along the limiting slide groove 22. When the docking protrusion 33 slides down to the bottom of the limiting slide groove 22, the second pressing plate 9 is still descending. At this time, the docking protrusion 33 is limited by the limiting slide groove 22 and cannot continue to descend, resulting in the separation of the magnet 11 and the iron block 35. In this way, the elastic mesh body 21 instantly releases the rebound force, thereby ejecting the tea leaves laid on the upper layer, causing the spread tea leaves to move, facilitating the release of exhaust gas between the leaves, and also facilitating the turning of the tea leaves, thereby improving the fermentation effect.

[0052] In some specific embodiments, in order to prevent the tea leaves laid on the elastic mesh assembly from being crushed when the first pressing plate 2 descends, limiting protrusions 34 are fixedly provided on the upper sides of the two supporting plates 10. The limiting protrusions 34 are higher than the upper layer of the elastic mesh assembly and can limit the descending first pressing plate 2.

[0053] In some specific embodiments, due to the existence of the limiting protrusion 34, the first pressure plate 2 cannot fully press away the gas between it and the elastic mesh assembly. In order to ensure sufficient exhaust, a pressure sensing switch is provided on the limiting protrusion 34, and a negative pressure air pump 23 electrically connected to the pressure sensing switch is fixedly provided on the outer walls on both sides of the fermentation box 1, and the negative pressure end of the negative pressure air pump 23 is connected to the corresponding exhaust hole 25 through a pipeline. When the first pressure plate 2 descends and hits the limiting protrusion 34, the pressure sensing switch generates an induction, causing the negative pressure air pump 23 to run, and the negative pressure air pump 23 then sucks the internal gas of the fermentation box 1 to fully remove the waste gas generated by the fermentation inside the fermentation box 1. When the first pressure plate 2 rises and resets, the negative pressure air pump 23 stops because there is no external object acting on the pressure sensing switch.

[0054] In some specific embodiments, in order to facilitate the observation of the fermentation of tea leaves inside the fermentation box 1, a window 18 is provided on the rear side wall of the fermentation box 1, and the window 18 is movably connected to the side wall of the fermentation box 1 through a hinge, which is convenient for opening and closing, and for external personnel to check the fermentation of tea leaves, so as to control the extension and retraction interval of the electric telescopic rod 5 in time through the timing cycle start controller 6, that is, to adjust the air intake and exhaust time.

[0055] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0056] The tea leaves are laid on the elastic mesh 21, and then the laid tea leaves are carried into the fermentation box 1 through the connection frame 20, and the two ends of the connection frame 20 are horizontally mounted on the support plate 10, and at this time, the ends of the docking protrusions 33 connected to the iron block 35 are slidably inserted into the limiting slide groove 22, and then the sealed box door 27 is closed to start fermentation; the temperature and humidity inside the fermentation box 1 are set by the temperature control component 7 and the humidity control component 8, and the controller 6 is started by the timing cycle to control the extension interval of the electric telescopic rod 5 each time;

[0057] Whenever the interval is set, the electric telescopic rod 5 is extended and retracted once. When the telescopic end of the electric telescopic rod 5 is extended downward, the first pressure plate 2 is pushed down through the connecting sleeve 3. When the first pressure plate 2 drops to the upper layer of the elastic mesh assembly and stops, the connecting sleeve 3 also stops. At this time, the electric telescopic rod 5 continues to extend, and the second support spring 4 is compressed. At this time, the convex plate 28 at the telescopic end of the electric telescopic rod 5 is just in contact with the linkage slider 29. At this time, the electric telescopic rod 5 continues to extend, and the convex plate 28 is lowered to squeeze the linkage slider 29, pushing the linkage slider 29 to slide down along the guide rail 30 to compress the first support spring 31, and the linkage slider 29 pulls the traction wire 26. The traction wire 26 relies on the steering action of the steering pulley 32 to pull the lifting guide rod 16 upward, and the lifting guide rod 16 drives the second pressure plate 9 to rise;

[0058] In this way, the first pressing plate 2 and the second pressing plate 9 move up and down relative to each other, squeezing the internal gas of the fermentation box 1, that is, forming a piston exhaust movement, so that the gas is discharged from the one-way exhaust components on both sides. When the electric telescopic rod 5 shrinks and resets, it is convenient to make the first pressing plate 2 rise, and at the same time, the lifting guide rod 16 descends and resets by relying on the rebound force of the limit spring 17, driving the second pressing plate 9 to descend and reset. In this process, the first pressing plate 2 and the second pressing plate 9 form a piston suction movement, which is convenient for relying on the air inlet 19 to absorb oxygen from the oxygen storage tank 13 into the fermentation box 1, so that automatic air intake and exhaust are realized;

[0059] When the first pressing plate 2 descends to the upper layer of the elastic mesh assembly, it just hits the limiting protrusion 34 to avoid pressing on the tea leaves and causing damage to the tea leaves. At the same time, the pressure sensing switch on the limiting protrusion 34 generates an induction, so that the negative pressure air pump 23 operates, and the negative pressure air pump 23 sucks the gas inside the fermentation box 1, and fully removes the waste gas generated by the fermentation inside the fermentation box 1.

[0060] When the second pressing plate 9 is lowered and reset, the magnet 11 on the second pressing plate 9 is just in contact with the iron block 35 and adsorbed together. When the second pressing plate 9 is lowered and reset, the magnet 11 and the iron block 35 are adsorbed together, and the second pressing plate 9 first pulls the middle part of the elastic net body 21 downward and concave through the magnet 11 and the iron block 35. During this process, the docking protrusion 33 slides down along the limiting slide groove 22. When the docking protrusion 33 slides down to the bottom of the limiting slide groove 22, the second pressing plate 9 is still descending. At this time, the docking protrusion 33 is limited by the limiting slide groove 22 and cannot continue to descend, resulting in the separation of the magnet 11 and the iron block 35. In this way, the elastic net body 21 instantly releases the rebound force, thereby ejecting the tea leaves laid on the upper layer, making the spread tea leaves move, which is convenient for the exhaust gas between the leaves to be dispersed, and also convenient for the tea leaves to be turned over, thereby improving the fermentation effect.

[0061] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A fermentation device for processing Polygonatum odoratum black tea, comprising a fermentation box (1) and an oxygen storage tank (13), wherein an LED lamp (12) is arranged inside the fermentation box (1); an oxygen supply pipeline is arranged at the bottom of the oxygen storage tank (13), and an air inlet (19) is arranged on the inner wall of the fermentation box (1) and is connected to the oxygen supply pipeline, characterized in that: Also includes: A support plate (10), wherein two support plates (10) are provided and symmetrically distributed on the inner walls of both sides of the fermentation box (1); An elastic mesh plate assembly, the elastic mesh plate assembly being cooperatively arranged between the two support plates (10); One-way exhaust components, wherein two groups of the one-way exhaust components are provided and are respectively arranged on both sides of the fermentation box (1); An upper pressing plate assembly, the upper pressing plate assembly comprising a first pressing plate (2) and an electric telescopic rod (5), the first pressing plate (2) being cooperatively arranged on the upper side of the fermentation box (1), the electric telescopic rod (5) being connected to the top of the fermentation box (1), and the telescopic end of the electric telescopic rod (5) being provided with an elastic telescopic connecting piece, the telescopic end of the electric telescopic rod (5) being connected to the first pressing plate (2) via the elastic telescopic connecting piece; A lower pressure plate assembly, the lower pressure plate assembly comprising a second pressure plate (9), a lifting guide rod (16) and a linkage assembly, the second pressure plate (9) being arranged at the lower side of the inside of the fermentation box (1), the lifting guide rod (16) being connected below the second pressure plate (9), a limit spring (17) being connected between the bottom end of the lifting guide rod (16) and the outer wall of the fermentation box (1), and the linkage assembly being arranged between the lifting guide rod (16) and the telescopic end of the electric telescopic rod (5).

2. A fermentation device for processing polygonatum black tea according to claim 1, characterized in that: The elastic mesh assembly comprises a connecting frame (20), an elastic mesh body (21), an iron block (35) and a magnet (11); the connecting frame (20) is arranged between the two supporting plates (10); the elastic mesh body (21) is connected in the connecting frame (20); the iron block (35) is arranged at the bottom of the elastic mesh body (21); and a docking protrusion (33) is arranged at the rear side of the bottom of the iron block (35); a limiting sliding groove (22) which cooperates with the docking protrusion (33) is vertically opened on the inner wall of the fermentation box (1); and the magnet (11) is arranged in the middle position of the second pressing plate (9), and the magnet (11) is aligned with the iron block (35).

3. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: The linkage assembly comprises a traction wire (26), a guide rail (30), a linkage slider (29), a steering pulley (32) and a convex plate (28). The guide rail (30) is vertically connected to the top rear side of the fermentation box (1). The linkage slider (29) is slidably connected to the guide rail (30), and a first support spring (31) is connected between the linkage slider (29) and the bottom of the guide rail (30). The two ends of the traction wire (26) are respectively connected to the linkage slider (29) and the lifting guide rod (16). The steering pulley (32) is arranged at the top of the guide rail (30), and the steering pulley (32) cooperates with the traction wire (26). In order to facilitate the traction wire (26) to slide relative to the fermentation box (1), the convex plate (28) is arranged at the telescopic end of the electric telescopic rod (5), and the convex plate (28) is aligned with the linkage slider (29).

4. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: The elastic telescopic connection member comprises a connecting sleeve (3) and a second supporting spring (4); the connecting sleeve (3) is slidably sleeved on the telescopic end of the electric telescopic rod (5), and the bottom end of the connecting sleeve (3) is fixedly connected to the first pressing plate (2); the second supporting spring (4) is connected between the connecting sleeve (3) and the telescopic end of the electric telescopic rod (5).

5. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: The one-way exhaust assembly comprises an exhaust hole (25) and a second one-way valve (24); the exhaust hole (25) is arranged on a side wall of the fermentation box (1) close to the support plate (10); an exhaust pipe connected to the exhaust hole (25) is arranged on the outer wall of the fermentation box (1); and the second one-way valve (24) is arranged on the exhaust pipe.

6. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: The oxygen supply pipeline comprises a connecting pipe (14), a first one-way valve and a manual valve (15); the connecting pipe (14) is connected between the air inlet hole (19) and the oxygen storage tank (13); the first one-way valve is arranged at one end of the connecting pipe (14) close to the air inlet hole (19); and the manual valve (15) is installed on the connecting pipe (14).

7. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: Limiting protrusions (34) are fixedly provided on the upper sides of the two support plates (10).

8. The fermentation device for processing polygonatum black tea according to claim 7, characterized in that: A pressure sensing switch is arranged on the limit protrusion (34), and negative pressure air pumps (23) electrically connected to the pressure sensing switch are fixedly arranged on the outer walls on both sides of the fermentation box (1), and the negative pressure end of the negative pressure air pump (23) is connected to the corresponding exhaust hole (25).

9. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: A viewing window (18) is provided on the rear side wall of the fermentation box (1).

10. The fermentation device for processing polygonatum black tea according to claim 1, characterized in that: The LED lamps (12) are provided in two groups and are respectively arranged on the first pressing plate (2) and the second pressing plate (9).

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