Temperature-controllable withering trough

Abstract

The utility model relates to the field of tea processing equipment, in particular to a temperature-controllable withering trough which comprises a trough body, the trough body comprises a storage box used for containing tea, a first through hole and a second through hole are formed in the side wall of the trough body and located below the storage box, and the first through hole and the second through hole are formed in the two ends of the trough body respectively. And a fan for blowing hot air is mounted at the first through hole. Compared with the prior art, through the arrangement of the second through holes, the technical problem that the comprehensive quality of the tea leaves is finally influenced due to different withering degrees of the tea leaves at the front and rear ends caused by temperature difference between the front and rear ends in the whole withering trough in the prior art is solved.

Description

Technical Field

[0001] The utility model patent relates to the field of tea processing equipment, specifically a temperature-controllable withering tank. Background Art

[0002] Withering is also called "withering carving", which is the name of the tea making process. The fresh leaves are spread out at a certain thickness and dried in the sun to make them wilt. During the withering process, the fresh leaves undergo a series of changes: the water content decreases, the leaves become soft from brittle and hard, and are easy to roll into strips; the activity of enzymes contained in the leaves increases, which promotes the decomposition and transformation of fresh leaf components such as starch, protein, and insoluble protopectin, and produces effective substances such as glucose, amino acids, and soluble pectin that are beneficial to the quality of the finished tea. Polyphenols are also oxidized to varying degrees. Normal and effective withering makes the grass smell of the fresh leaves disappear and produce a fresh fragrance, with a fruity or floral aroma, and the finished tea tastes mellow and not bitter. Withering requires suitable conditions such as temperature, humidity and air circulation. Traditional withering methods include sunlight withering (sun drying), indoor natural withering (spreading out to dry) and compound withering that combines the above two methods. The above traditional methods have a long process cycle and high labor intensity. In order to produce tea efficiently, manually controlled semi-mechanized withering equipment is also used to wither the tea leaves. This withering equipment is called a withering trough.

[0003] The existing withering tank structure is mostly as described in the Chinese patent "A withering tank for black tea processing" (patent number ZL202220806584.1, published on August 2, 20220). Figure 1 , 2 As shown, the space under the partition (for placing tea leaves) of the withering trough of this structure is in a sealed state. After the fan blows, all the gas can only flow out from the top of the withering trough to wither the tea leaves placed on the partition. However, in actual operation, the space under the partition of the withering trough of this structure is in a gas internal circulation state, which causes the temperature of the tail of the withering trough away from the fan to rise, resulting in a temperature difference between the front and rear ends of the entire withering trough, which in turn causes the tea leaves at the front and rear ends to have different withering degrees, ultimately affecting the overall quality of the tea leaves. Utility Model Content

[0004] The utility model aims to provide a temperature-controllable withering trough, which is mainly used to solve the technical problem in the prior art that there is a temperature difference between the front and rear ends of the entire withering trough, which leads to different withering degrees of tea leaves at the front and rear ends, and finally affects the comprehensive quality of the tea leaves.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A temperature-controllable withering trough comprises a trough body, the trough body comprises a storage box for placing tea leaves, a first through hole and a second through hole are opened on the side wall of the trough body and below the storage box, the first through hole and the second through hole are respectively arranged at two ends of the trough body, and a fan for blowing hot air is installed at the first through hole.

[0007] Preferably, the bottom of the trough body is hollowed out, and a frame-shaped baffle is installed on the outer bottom of the trough body. The frame-shaped baffle has upper and lower openings, and the upper opening of the frame-shaped baffle is fixedly connected to the edge of the hollow bottom of the trough body. The side of the frame-shaped baffle is inclined, and the lower opening of the frame-shaped baffle narrows toward the middle; a movable collection box is provided below the frame-shaped baffle.

[0008] Preferably, the collection box is a cubic collection box with an opening at the top, and the size of the opening of the collection box is larger than the size of the lower opening of the frame-shaped baffle; among the four sides of the collection box, the upper edge of one side contacts the lower edge of the frame-shaped baffle, and the three side surfaces extend vertically upward to contact the outer surface of the baffle; and a handle is provided on the side of the collection box.

[0009] Preferably, a shielding device for shielding the second through hole is installed on the outer side of the trough body; the shielding device includes two movable plates that can move relative to each other, and a driving component that can drive the movable plates to move relative to each other is installed on the upper ends of the movable plates.

[0010] Preferably, the driving assembly includes a rectangular shell, a T-slot is provided on the lower surface of the shell, two T-blocks matching the T-slot are slidably connected in the T-slot, the two T-blocks are coaxially provided with threaded holes along the length direction of the shell, and the threads in the threaded holes of the two T-blocks rotate in opposite directions, a threaded rod is commonly threadedly connected in the two threaded holes, the threaded rod is provided with threads from the middle to both ends, and the threads are in opposite directions and match the threaded holes of the corresponding T-blocks; both ends of the threaded rod extend out of the two ends of the shell and are rotatably connected to the shell, and one end of the threaded rod is fixedly connected to a motor, a support plate is fixed on the shell, and the lower surface of the motor is fixedly connected to the support plate; the lower surface of the T-block located outside the shell is fixedly connected to the movable plate.

[0011] Preferably, one end of the trough body is open near the storage box, and the bottom of the storage box is hinged to the upper surface of the trough body opening; a plurality of exhaust holes that only allow gas to pass but not tea leaves are provided at the bottom of the storage box, and a discharge port is provided at the storage box near the trough body opening, and a movable baffle is hinged at the discharge port; a rotating device for driving the storage box to rotate is provided at one end of the bottom of the storage box away from the movable baffle.

[0012] Preferably, the rotating device is a liquid cylinder with two ends hinged to the bottom of the storage box and the inner wall of the tank body respectively.

[0013] Preferably, an L-shaped block is hinged on the upper surface of the storage box, and the block has a vertical section and a horizontal section that are perpendicular to each other, and the two sides of the angle formed by the vertical section and the horizontal section can contact the upper surface of the trough body and the side of the movable baffle respectively.

[0014] Preferably, a limit baffle is fixed on the inner surface of the groove body, and when the bottom surface of the storage box rotates to a horizontal state, the outer bottom of the storage box contacts the limit baffle.

[0015] Preferably, a temperature sensor is installed on the inner wall of the tank body near the second through hole, and the temperature sensor, the fan and the motor are all electrically connected to the controller.

[0016] The working principle and beneficial effects of the utility model:

[0017] 1. The space at the bottom of the storage box of the traditional withering trough is in a sealed state. After the fan blows, all the gas can only flow out from the top of the withering trough to wither the tea leaves placed in the storage box. However, in actual operation, the space at the bottom of the storage box of the withering trough of this structure is in a gas internal circulation state, which causes the temperature of the tail of the withering trough away from the fan to rise, resulting in a temperature difference at both ends of the entire withering trough, which in turn causes the withering degree of the tea leaves at the front and rear ends to be different, ultimately affecting the comprehensive quality of the tea leaves. Based on this technical problem, the present solution provides a second through hole at the tail of the withering trough, that is, the end opposite to the fan, so that part of the air at the tail of the withering trough can be discharged from the second through hole and exchange air with the outside, thereby reducing the temperature of the air at the tail of the withering trough, making the temperature inside the entire withering trough uniform, so that the withering degree of the tea leaves withered at the front and rear ends remains uniform, solving the technical problem of the prior art that there is a temperature difference at the front and rear ends of the entire withering trough, which in turn causes the withering degree of the tea leaves at the front and rear ends to be different, ultimately affecting the comprehensive quality of the tea leaves.

[0018] 2. In this solution, the motor drives the threaded rod to rotate, thereby driving the two T-blocks to move relative to each other, and then driving the two movable plates to move relative to each other and slide against the outer side of the tank body, blocking or partially blocking or fully opening the second through hole. By controlling the size of the opening of the second through hole, the amount of air leakage inside the tank body is controlled, and ultimately the effect of regulating the temperature at the tail end of the tank body is achieved.

[0019] 3. In this scheme, the rotation and positioning of the storage box are controlled by the extension and retraction of the liquid cylinder. When the tea leaves need to be withered, the storage box can be laid flat by controlling the shortening of the liquid cylinder, and the tea leaves can be placed in the storage box for withering. After the withering is completed, the liquid cylinder can be controlled to extend, and one end of the storage box can be lifted up and placed obliquely. With the assistance of workers, the tea leaves can slide along the bottom of the withering trough to the movable baffle, and the L-shaped block can be lifted to open the storage box. The tea leaves can slide out of the storage box, and the operator can use a container to catch the withered tea leaves at the movable baffle, thereby achieving the purpose of conveniently collecting the tea leaves.

[0020] 4. In this scheme, the purpose of setting a collecting box at the bottom of the trough body is to allow impurities on the tea leaves to fall into the trough body and fall into the collecting box to be collected and cleaned. The purpose of setting the frame baffle is to narrow the outlet for discharging impurities, thereby reducing the volume of the collecting box and facilitating the operator to clean the collecting box. At the same time, one side of the collecting box is flush with the bottom of the frame baffle, so that the collecting box can be pulled out or pushed in at the side opposite to the flush end. The three sides of the collecting box are raised to improve the airtightness inside the trough body and prevent excessive gas from flowing out from the bottom of the trough body, which would reduce the thermal insulation effect inside the trough body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural diagram of a temperature-controlled withering tank of the utility model patent (showing the front side);

[0022] Figure 2 This is a three-dimensional structural diagram of a temperature-controlled withering tank of the utility model patent (shown on the back);

[0023] Figure 3 It is a partial cross-sectional view of a temperature-controlled withering trough of the utility model patent;

[0024] Figure 4 This is a three-dimensional structural diagram of a storage box of a temperature-controllable withering trough of the utility model patent in an inclined state;

[0025] Figure 5 This is a structural diagram of a shielding device for a temperature-controllable withering trough of the utility model patent;

[0026] Figure 6 A temperature-controlled withering tank according to the utility model patent Figure 5 Exploded diagram.

[0027] The figure marks in the drawings of the specification include: trough body 1, first through hole 11, second through hole 12, frame baffle 13, collection box 14, fan 15, storage box 2, movable baffle 21, L-shaped block 22, liquid cylinder 23, shielding device 3, movable plate 31, motor 32, T-block 33, shell 34, threaded rod 35. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, a temperature-controllable withering tank includes a tank body 1, the tank body 1 includes a storage box 2 for placing tea leaves, a first through hole 11 and a second through hole 12 are opened on the side wall of the tank body 1 and below the storage box 2, the first through hole 11 and the second through hole 12 are respectively arranged at two ends of the tank body 1, and a fan 15 for blowing hot air is installed at the first through hole 11.

[0030] The space below the storage box 2 in the traditional withering trough is in a sealed state. After the fan 15 blows, all the gas can only flow out from the top of the withering trough to wither the tea leaves placed in the storage box 2. However, in actual operation, the space below the storage box 2 in the withering trough of this structure is in a gas internal circulation state, which causes the temperature of the tail of the withering trough away from the fan 15 to rise, thereby causing a temperature difference at both ends of the entire withering trough, and then causing the withering degree of the tea leaves at the front and rear ends to be different, ultimately affecting the comprehensive quality of the tea leaves. Based on this technical problem, the present solution provides a second through hole 12 at the tail of the withering trough, that is, the end opposite to the fan 15, so that part of the air at the tail of the withering trough can be discharged from the second through hole 12 and exchange air with the outside, thereby reducing the temperature of the air at the tail of the withering trough, making the temperature inside the entire withering trough uniform, so that the withering degree of the tea leaves withered at the front and rear ends remains uniform.

[0031] In order to further control the temperature in the tank body 1, a shielding device 3 for shielding the second through hole 12 is also provided at the second opening. The shielding device 3 has a structure as shown in FIG. Figure 5 , Figure 6As shown, the driving assembly includes a rectangular shell 34, a T-slot is provided on the lower surface of the shell 34, and two TT blocks 33 matching the T-slot are slidably connected in the T-slot, and the two TT blocks 33 are coaxially provided with threaded holes along the length direction of the shell 34, and the threads in the threaded holes of the two TT blocks 33 rotate in opposite directions, and a threaded rod 35 is commonly threadedly connected in the two threaded holes, and the threaded rod 35 is provided with threads from the middle to both ends, and the threaded directions are opposite and match the threaded holes of the corresponding TT blocks 33; both ends of the threaded rod 35 extend out of the two ends of the shell 34 and are rotatably connected to the shell 34, and one end of the threaded rod 35 is fixedly connected to the motor 32, and the motor 32 rotates, driving the threaded rod 35 to rotate, thereby driving the two TT blocks 33 to slide in the T-slot, a support plate is fixed on the shell 34, and the lower surface of the motor 32 is fixedly connected to the support plate; the lower surface of the TT block 33 located outside the shell 34 is fixedly connected to the movable plate 31, the motor 32 drives the threaded rod 35 to rotate, thereby driving the two TT blocks 33 to move relative to each other, and then driving the two movable plates 31 to move relative to each other and slide on the outer side of the tank body 1, covering or partially covering or completely opening the second through hole 12, by controlling the opening size of the second through hole 12, and then controlling the leakage amount inside the tank body 1, and finally achieving the effect of regulating the tail temperature inside the tank body 1.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, one end of the trough body 1 is open near the storage box 2, and the bottom of the storage box 2 is hinged to the upper surface of the opening of the trough body 1 through a hinge; the bottom of the storage box 2 is provided with a plurality of exhaust holes that can only pass gas but not tea leaves, and the storage box 2 is provided with a discharge port near the opening of the trough body 1, and a movable baffle 21 is hinged at the discharge port through a hinge, and an L-shaped card block is hinged on the upper surface of the storage box 2 through a hinge, and the card block has a vertical section and a horizontal section that are perpendicular to each other, and the two sides of the vertical section and the horizontal section that form an angle can be respectively connected to the upper surface of the trough body 1, The movable baffle 21 contacts the side. When the movable baffle 21 is needed to seal the discharge port, the L-shaped baffle is turned down so that the two sides of the vertical section and the horizontal section that form an angle contact the upper surface of the trough body 1 and the side of the movable baffle 21, thereby clamping the movable baffle 21. When the movable baffle 21 needs to be opened, the L-shaped clamping block 22 can be lifted up; a rotating device for driving the storage box 2 to rotate is provided at one end of the bottom of the storage box 2 away from the movable baffle 21, and the rotating device is a liquid cylinder 23 whose two ends are respectively hinged to the bottom of the storage box 2 and the inner wall of the trough body 1;

[0033] In this solution, the storage box 2 is rotated and positioned by the extension and contraction of the liquid cylinder 23. When the tea leaves need to be withered, the liquid cylinder 23 is controlled to be shortened, the storage box 2 is laid flat, and the tea leaves are placed in the storage box 2 for withering. After the withering is completed, the liquid cylinder 23 can be controlled to extend, and one end of the storage box 2 can be lifted up and placed obliquely (such as Figure 4 As shown in the figure, the tea leaves slide along the bottom surface of the withering trough to the movable baffle 21, and the L-shaped block 22 is lifted up, the storage box 2 can be opened, and the tea leaves slide out along the storage box 2. The operator can use a container to catch the withered tea leaves at the movable baffle 21.

[0034] like Figure 3 As shown, a limit baffle is fixed on the inner surface of the trough body 1. When the bottom surface of the storage box 2 rotates to a horizontal state, the outer bottom of the storage box 2 contacts the limit baffle. Most of the working states of the storage box 2 are in a flat state. The limit baffle can support the storage box 2, reduce the damage caused by the squeezing of the storage box 2 and the inner wall of the trough body 1, and the compression damage to the liquid cylinder 23.

[0035] like Figure 1 , Figure 2 As shown, the bottom of the trough body 1 is hollowed out, and a frame-shaped baffle 13 is installed on the outer bottom of the trough body 1, the frame-shaped baffle 13 is opened up and down, and the upper opening of the frame-shaped baffle 13 is fixedly connected to the edge of the hollow bottom of the trough body 1, the side of the frame-shaped baffle 13 is inclined, and the lower opening of the frame-shaped baffle 13 is narrowed toward the middle, and the appearance of the entire frame-shaped baffle 13 is similar to an inverted cone boss with a hollow middle part; a movable collection box 14 is arranged below the frame-shaped baffle 13, and the collection box 14 is a cubic collection box 14, and the collection box 14 is opened above, and the size of the opening of the collection box 14 is larger than the size of the lower opening of the frame-shaped baffle 13; among the four side surfaces of the collection box 14, the upper edge of one side surface is in contact with the lower edge of the frame-shaped baffle 13, and the three side surfaces extend vertically upward and contact with the outer surface of the baffle; the side of the collection box 14 is provided with a handle.

[0036] In the present solution, the purpose of setting a collecting box 14 at the bottom of the trough body 1 is to allow impurities on the tea leaves to fall into the trough body 1 and be collected and cleaned in the collecting box 14. The purpose of setting a frame baffle is to narrow the outlet for discharging impurities, thereby reducing the volume of the collecting box 14 and facilitating the operator to clean the collecting box 14. At the same time, one side of the collecting box 14 is flush with the bottom of the frame baffle 13, so that the collecting box 14 can be pulled out or pushed in at the side opposite to the flush end. The three sides of the collecting box 14 are raised to improve the airtightness inside the trough body 1 and prevent excessive gas from flowing out from the bottom of the trough body 1, which would reduce the thermal insulation effect inside the trough body 1.

[0037] At the same time, in this solution, a temperature sensor is installed on the inner wall of the tank body 1 near the second through hole 12. The temperature sensor, the fan 15, and the motor 32 are all electrically connected to the controller. The temperature sensor senses the temperature at the rear end of the tank body 1. When the temperature is not suitable, it sends a signal to the controller. The controller controls the motor 32 to rotate forward or reverse, controls the opening size of the second through hole 12, and controls the air intake volume and air intake temperature of the fan 15 at the same time, so as to comprehensively regulate the temperature inside the tank body 1.

[0038] From the above, it can be seen that the specific implementation of the utility model is as follows:

[0039] When the tea leaves need to be withered, the liquid cylinder 23 is controlled to be shortened, the storage box 2 is laid flat, and the tea leaves are placed in the storage box 2 for withering. During the withering process, the temperature sensor senses the temperature at the tail end of the trough body 1. When the temperature is not suitable, a signal is sent to the controller. The controller controls the motor 32 to rotate forward or reverse, driving the threaded rod 35 to rotate, thereby driving the two TT blocks 33 to move relative to each other, and then driving the two movable plates 31 to move relative to each other and slide against the outer side of the trough body 1, blocking or partially blocking or completely opening the second through hole 12. By controlling the opening size of the second through hole 12, the air leakage inside the trough body 1 is controlled, and finally the effect of regulating the temperature at the tail end of the trough body 1 is achieved. At the same time, the air intake volume and air intake temperature of the fan 15 are controlled to comprehensively regulate the temperature inside the trough body 1.

[0040] After the withering process is completed, the liquid cylinder 23 can be controlled to extend, one end of the storage box 2 can be lifted up and placed obliquely, and the tea leaves can slide along the bottom of the withering trough to the movable baffle 21. The L-shaped block 22 can be lifted up to open the storage box 2, and the tea leaves can slide out along the storage box 2. The operator can use a container to catch the withered tea leaves at the movable baffle 21.

[0041] After using for a period of time, the worker can pull the handle to take out the collection box 14 and clean the impurities in the collection box 14.

[0042] In summary, this solution solves the technical problem in the prior art that there is a temperature difference between the front and rear ends of the entire withering trough, which leads to different withering degrees of the tea leaves at the front and rear ends, ultimately affecting the overall quality of the tea leaves.

[0043] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A temperature-controllable withering tank, comprising a tank body, the tank body comprising a storage box for placing tea leaves, characterized in that: A first through hole and a second through hole are provided on the side wall of the groove body and below the storage box. The first through hole and the second through hole are respectively provided at two ends of the groove body. A fan for blowing hot air is installed at the first through hole.

2. A temperature-controlled withering tank according to claim 1, characterized in that: The bottom of the trough body is hollowed out, and a frame-shaped baffle is installed on the outer bottom of the trough body. The frame-shaped baffle has upper and lower openings, and the upper opening of the frame-shaped baffle is fixedly connected to the edge of the hollowed-out bottom of the trough body. The side of the frame-shaped baffle is inclined, and the lower opening of the frame-shaped baffle narrows toward the middle; a movable collection box is arranged below the frame-shaped baffle.

3. A temperature-controlled withering tank according to claim 2, characterized in that: The collection box is a cubic collection box with an opening on the top, and the size of the opening of the collection box is larger than the size of the lower opening of the frame-shaped baffle. Among the four sides of the collection box, the upper edge of one side contacts the lower edge of the frame-shaped baffle, and the three side surfaces extend vertically upward and contact the outer surface of the baffle. A handle is provided on the side of the collection box.

4. A temperature-controlled withering tank according to claim 3, characterized in that: A shielding device for shielding the second through hole is installed on the outer side of the groove body; the shielding device includes two movable plates that can move relatively, and a driving component that can drive the movable plates to move relatively is installed on the upper ends of the movable plates.

5. The temperature-controllable withering tank according to claim 4, characterized in that: The driving assembly includes a rectangular shell, a T-slot is provided on the lower surface of the shell, and two T-blocks matching the T-slot are slidably connected in the T-slot, the two T-blocks are coaxially provided with threaded holes along the length direction of the shell, and the threads in the threaded holes of the two T-blocks rotate in opposite directions, and a threaded rod is commonly threadedly connected in the two threaded holes, the threaded rod is provided with threads from the middle to both ends, and the threaded directions are opposite and match the threaded holes of the corresponding T-blocks; both ends of the threaded rod extend out of the two ends of the shell and are rotatably connected to the shell, and one end of the threaded rod is fixedly connected to a motor, a support plate is fixed on the shell, and the lower surface of the motor is fixedly connected to the support plate; the lower surface of the T-block located outside the shell is fixedly connected to the movable plate.

6. The temperature-controlled withering tank according to claim 5, characterized in that: One end of the trough body is open near the storage box, and the bottom of the storage box is hinged to the upper surface of the trough body opening; a plurality of exhaust holes that can only pass gas but not tea leaves are provided at the bottom of the storage box, a discharge port is provided at the storage box near the trough body opening, and a movable baffle is hinged at the discharge port; a rotating device for driving the storage box to rotate is provided at one end of the bottom of the storage box away from the movable baffle.

7. The temperature-controlled withering tank according to claim 6, characterized in that: The rotating device is a liquid cylinder with two ends respectively hinged on the bottom of the storage box and the inner wall of the tank body.

8. The temperature-controllable withering tank according to claim 7, characterized in that: An L-shaped card block is hinged on the upper surface of the storage box. The card block has a vertical section and a horizontal section that are perpendicular to each other. The two sides of the vertical section and the horizontal section that form an angle can contact the upper surface of the groove body and the side of the movable baffle respectively.

9. The temperature-controllable withering tank according to claim 8, characterized in that: A limit baffle is fixed on the inner surface of the groove body, and when the bottom surface of the storage box rotates to a horizontal state, the outer bottom of the storage box contacts the limit baffle.

10. The temperature-controllable withering tank according to claim 9, characterized in that: A temperature sensor is installed on the inner wall of the tank body near the second through hole, and the temperature sensor, the fan and the motor are all electrically connected to the controller.

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