High-energy-efficiency tea rolling furnace and control system
By using a multi-layer belt conveyor mechanism and hot air circulation design, combined with radiative heat transfer and natural convection, the problems of uneven tea temperature and tea foam accumulation in traditional tea grinding furnaces have been solved, achieving uniform tea temperature and production safety.
Patent Information
- Application Number
- CN202610012639.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-07
- Publication Date
- 2026-02-24
AI Technical Summary
Traditional tea grinders have chaotic hot air flow paths during natural convection, resulting in many dead zones and uneven tea temperature. In addition, if tea foam is not cleaned up in time, it can easily accumulate and overflow, potentially causing a fire and endangering property safety.
A high-efficiency tea grinder was designed, which adopts a multi-layer belt conveyor mechanism and a hot air circulation mechanism, combining radiative heat transfer and natural convection to optimize the air flow path, and collects tea foam through a defoaming mechanism to prevent overflow.
This achieves uniform and safe tea temperature, avoids tea foam accumulation and fire risks, and improves the safety and efficiency of tea grinding production.
Smart Images
Figure CN121557705A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tea processing technology, specifically to a high-efficiency tea grinding furnace and its control system. Background Technology
[0002] A tea grinding oven is a specialized piece of equipment used in the production of tea for drying and grinding tea leaves. It is a large, continuous tea drying oven that allows tea leaves to move slowly between multiple mesh belts. Through a combination of radiant heat transfer and natural convection, the tea leaves are gradually dehydrated. Its main function is to remove the moisture from the steamed tea leaves, while also creating the unique color and aroma of the ground tea. Traditional tea grinding ovens have chaotic hot air flow paths during natural convection, resulting in many dead zones and uneven tea leaf temperatures. In addition, if tea foam is not cleaned up in time during the movement of the tea leaves along the multi-layer belt conveyor, it can easily overflow the mesh belt. If the overflowing tea foam falls onto the heat source, it can easily cause a fire, affecting property safety. Summary of the Invention
[0003] This invention provides a high-efficiency tea grinder and control system to solve at least one of the technical problems mentioned above, namely, the chaotic hot air flow path during natural convection in traditional tea grinders, the existence of a large number of dead zones, resulting in uneven tea temperature, and the fact that if tea foam is not cleaned up in time during the movement of tea with the multi-layer belt conveyor, it can easily overflow the mesh belt, and if the overflowing tea foam falls on the heat source, it can easily cause a fire, affecting property safety.
[0004] To solve the above-mentioned technical problems, the present invention discloses a high-efficiency tea grinding furnace, including a foundation, a feeding mechanism installed on the upper front side of the foundation, a multi-layer belt conveyor mechanism and a hot air circulation mechanism installed in the upper middle part of the foundation, the multi-layer belt conveyor mechanism and the hot air circulation mechanism being arranged correspondingly, a circulating discharge mechanism installed on the upper rear side of the foundation, the feeding mechanism and the circulating discharge mechanism being arranged correspondingly to the multi-layer belt conveyor mechanism, and a defoaming mechanism connected to the lower side of the multi-layer belt conveyor mechanism.
[0005] Preferably, the feeding mechanism includes a front-end loose tea machine, a feeding fan is installed at the lower end of the front-end loose tea machine, the outlet of the feeding fan is connected to the loose tea machine frame 1, the loose tea machine frame 1 is installed at the rear end of the front-end loose tea machine, the loose tea machine frame 1 is installed on the upper front side of the foundation, and the rear side of the loose tea machine frame 1 is correspondingly set with a multi-layer belt conveyor mechanism.
[0006] Preferably, the circulating discharge mechanism includes a loose tea machine frame two, a feeding fan is installed inside the loose tea machine frame two, the loose tea machine frame two is installed on the upper rear side of the foundation, the upper rear side of the foundation is provided with a discharge port, and the front side of the loose tea machine frame two is correspondingly set with a multi-layer belt conveyor mechanism.
[0007] Preferably, the multi-layer belt conveyor mechanism includes a top mesh belt conveyor mechanism, a middle mesh belt conveyor mechanism, and a bottom mesh belt conveyor mechanism, and the top mesh belt conveyor mechanism, the middle mesh belt conveyor mechanism, and the bottom mesh belt conveyor mechanism have different sizes. The top mesh belt conveyor mechanism, the middle mesh belt conveyor mechanism, and the bottom mesh belt conveyor mechanism are all installed between mounting frame one and mounting frame two. Mounting frame one and mounting frame two are installed on the upper end of the foundation, and mounting frame one and mounting frame two are distributed front and back.
[0008] Preferably, the middle mesh belt conveyor mechanism includes several mesh belt conveyors. The conveying directions of adjacent conveyors in the top mesh belt conveyor mechanism and the several mesh belt conveyors are opposite. Several fixed frames 1 are evenly distributed along the front-back direction in the top mesh belt conveyor mechanism and the several mesh belt conveyors. Fixed frames 2 are symmetrically arranged on the left and right sides of the fixed frames 1. The fixed frames 2 are fixedly set on the upper end of the foundation. Several sliding cavities are evenly distributed along the vertical direction on the fixed frames 2. Sliding blocks are respectively provided on the upper and lower sides of the sliding cavities. Spring rods are fixed between the sliding blocks on the upper and lower sides. The sliding blocks are rotatably connected to the support rollers 1. The support rollers 1 are respectively arranged between the inner rings of the mesh belts of the top mesh belt conveyor mechanism and the several mesh belt conveyors.
[0009] Preferably, the front side of the fixed frame is provided with a rotating shaft, which is fixedly connected to the spreading plate, and the rear side of the bottom mesh belt conveyor is fixedly connected to the guide plate.
[0010] Preferably, the hot air circulation mechanism includes a pit located at the upper center of the foundation, with insulation walls on the left and right sides of the foundation. A combustion furnace is installed in the pit, with the furnace's air outlet connected to an air supply pipe. The air supply pipe is connected to an air supply frame one, which is connected to an air supply frame two via several hot air pipe groups and two return air pipes. The air outlet of the air supply frame two is connected to the furnace's air inlet. Several hot air pipe groups are respectively provided on the upper side of several mesh belt conveyor mechanisms. Each hot air pipe group includes several hot air pipes, which are evenly spaced along the left and right directions. The hot air pipes in the several hot air pipe groups have different diameters, and the two return air pipes are distributed on the left and right sides of the bottom mesh belt conveyor mechanism.
[0011] Preferably, the defogging mechanism includes rotating rods symmetrically arranged on the left and right sides of the mesh belt in the bottom mesh belt conveyor mechanism. The rotating rods are rotatably connected to connecting block 1. Connecting block 1 is slidably arranged in connecting groove 1 in the vertical direction. Connecting groove 1 is arranged on a connecting plate. The connecting plate has a recovery port. Two connecting grooves 2 are distributed on the upper and lower sides of the connecting plate. The two connecting grooves 2 are respectively connected to connecting groove 1. Connecting block 2 is arranged at the connection between connecting groove 2 and connecting groove 1. Spring 2 is fixed between the upper and lower connecting blocks 2. Spring 1 is correspondingly contacted on the left and right sides of connecting block 2. Spring 1 is fixedly arranged in connecting groove 2. Support roller 2 is rotatably arranged between the left and right connecting blocks 2. Support roller 2 is correspondingly contacted with the inner ring of the mesh belt of the bottom mesh belt conveyor mechanism. A top plate is fixedly arranged on the upper side of the left and right connecting plates. Several motors are evenly distributed on the top plate in the left and right direction. The motors are fixedly connected to the blower fan. A bottom plate is fixedly arranged on the lower side of the left and right connecting plates. The bottom plate is slidably arranged on the foundation in the front and back direction. The recovery port is connected to the interior of the bottom plate.
[0012] A control system for a high-efficiency tea grinder includes: a monitoring module: the monitoring module monitors the elastic force of spring rods corresponding to several mesh belt conveyor mechanisms, and obtains the elastic force Fim1+Fim2 of the spring rod at the m-th position in the i-th mesh belt conveyor mechanism; Control module: The control module compares the heat-drying effect of the i-th mesh belt conveyor during tea transmission with the target heat-drying effect. If the heat-drying effect of the mesh belt conveyor during tea transmission exceeds the target heat-drying effect range, the control module automatically adjusts the transmission speed of the i-th mesh belt conveyor.
[0013] Preferably, the mesh belt conveyor mechanisms are numbered as i, i=1, 2, 3, ..., j, where j is the number of mesh belt conveyor mechanisms. The spring rods that are in contact with each mesh belt conveyor mechanism are numbered as m according to their front-back distribution direction, m=2, 3, 4, ..., n, where n is the number of spring rods along the front-back direction. Among them, the spring rods on the left side of the same position along the front-back direction are numbered as m1, and the spring rods on the right side of the same position along the front-back direction are numbered as m2. Finally, the elastic force Fim1+Fim2 of the spring rod at the m position in the i-th mesh belt conveyor mechanism is obtained. The control module calculates the drying effect of the tea from m-1 to m based on the elastic force of the spring rod at the (m-1)th position in the i-th mesh belt conveyor and the elastic force of the spring rod at the mth position after the target time, as well as the formula [Fi(m-1)1+Fi(m-1)2]-(Fim1+Fim2). The target drying effect is the target drying amount of the tea transported from m-1 to m by the i-th mesh belt conveyor, and the target time is the time it takes for the tea to reach m from m-1 at the transmission speed of the i-th mesh belt conveyor. Attached Figure Description
[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the multi-layer belt conveyor structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the multi-layer belt conveyor structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the underlying mesh belt conveyor structure of the present invention; Figure 6 This is a schematic diagram of the defoaming mechanism of the present invention.
[0015] In the diagram: 1. Front-end loose tea machine; 2. Loose tea machine frame one; 3. Foundation; 4. Loose tea machine frame two; 5. Feed fan; 6. Mounting frame one; 7. Top-level mesh belt conveyor mechanism; 8. Air supply duct; 9. Air supply frame one; 10. Air supply frame two; 11. Hot air duct; 12. Mesh belt conveyor mechanism; 13. Bottom-level mesh belt conveyor mechanism; 14. Fixed frame one; 15. Spreading plate; 16. Rotating shaft; 17. Guide plate; 18. Mounting frame II; 19. Fixed frame II; 20. Support roller I; 21. Sliding block; 22. Spring rod; 23. Base plate; 24. Connecting plate; 25. Top plate; 26. Motor; 27. Fan; 28. Recycling port; 29. Connecting groove I; 30. Support roller II; 31. Connecting block I; 32. Rotating rod; 33. Connecting block II; 34. Spring I; 35. Spring II; 36. Connecting groove II; 37. Combustion furnace; 38. Return air pipe. Detailed Implementation
[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0017] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.
[0018] The present invention provides the following embodiments. Example 1: This embodiment of the invention provides a high-efficiency tea grinder, such as... Figures 1-2 As shown, the system includes a foundation 3. A feeding mechanism is installed on the upper front side of the foundation 3. A multi-layer belt conveyor and a hot air circulation mechanism are installed in the upper middle part of the foundation 3. The multi-layer belt conveyor and the hot air circulation mechanism are arranged accordingly. A circulating discharge mechanism is installed on the upper rear side of the foundation 3. The feeding mechanism and the circulating discharge mechanism are arranged accordingly with the multi-layer belt conveyor. A defoaming mechanism is connected to the lower side of the multi-layer belt conveyor.
[0019] The working principle and beneficial effects of the above technical solution are as follows: The feeding mechanism conveys the tea leaves to be dehydrated to the multi-layer belt conveyor, causing them to fall to the bottom layer. After passing through the bottom layer's discharge level, the tea leaves are sent to the circulating discharge mechanism, which then transports them to the top layer of the multi-layer belt conveyor. The tea leaves then fall layer by layer to the discharge layer, completing the drying process. During the movement of the tea leaves along the multi-layer belt conveyor, they are gradually dehydrated through a combination of radiative heat transfer and natural convection. The hot air circulation mechanism employs an internal hot air circulation design, optimizing the airflow path and avoiding dead zones that could lead to uneven tea temperature. Simultaneously, the multi-layer belt conveyor operates according to the target temperature... Layered heating is used to achieve the best drying effect for tea grinding, solving the technical problem of uneven tea temperature caused by the chaotic hot air flow path and numerous dead zones in traditional tea grinding furnaces under natural convection. As the multi-layer belt conveyor moves, tea dust falls layer by layer to the bottom layer of the multi-layer belt conveyor. The defoaming mechanism can collect the tea dust on the bottom layer of the multi-layer belt conveyor, preventing tea dust from overflowing to the heat source and causing a fire. This also solves the technical problem that if tea dust is not cleaned up in time during the movement of tea leaves with the multi-layer belt conveyor, it can easily overflow the mesh belt, and if the overflowing tea dust falls on the heat source, it can easily cause a fire, affecting property safety.
[0020] Example 2: Based on Example 1, such as Figures 1-2 As shown, the feeding mechanism includes a front loose tea machine 1, a feeding fan 5 is installed at the lower end of the front loose tea machine 1, the outlet of the feeding fan 5 is connected to the loose tea machine frame 2, the loose tea machine frame 2 is installed at the rear end of the front loose tea machine 1, the loose tea machine frame 2 is installed on the upper front side of the foundation 3, and the rear side of the loose tea machine frame 2 is correspondingly set with the multi-layer belt conveyor mechanism. The circulating discharge mechanism includes a loose tea machine frame 2 4, which is equipped with a feeding fan. The loose tea machine frame 2 4 is installed on the upper rear side of the foundation 3. The upper rear side of the foundation 3 is provided with a discharge port. The front side of the loose tea machine frame 2 4 is correspondingly set with a multi-layer belt conveyor mechanism.
[0021] The working principle and beneficial effects of the above technical solution are as follows: When the feed fan 5 is working, it blows the tea leaves in the previous loose tea machine 1 to disperse them and prevent them from clumping together. The dispersed tea leaves fall through the loose tea machine frame 2 into the bottom layer of the multi-layer belt conveyor. After being conveyed horizontally through the bottom layer, the tea leaves are fed into the feed fan. The feed fan blows the tea leaves fed into the loose tea machine frame 4 to the top layer of the multi-layer belt conveyor, causing the tea leaves to fall down layer by layer to the discharge layer. After falling through the discharge layer, the tea leaves fall into the discharge port and are finally sent to the next production process.
[0022] Example 3: Based on Example 1, such as Figures 1-4 As shown, the multi-layer belt conveyor mechanism includes a top mesh belt conveyor mechanism 7, a middle mesh belt conveyor mechanism, and a bottom mesh belt conveyor mechanism 13. The top mesh belt conveyor mechanism 7, the middle mesh belt conveyor mechanism, and the bottom mesh belt conveyor mechanism 13 have different sizes. The top mesh belt conveyor mechanism 7, the middle mesh belt conveyor mechanism, and the bottom mesh belt conveyor mechanism 13 are all installed between mounting frame 1 6 and mounting frame 2 18. Mounting frame 1 6 and mounting frame 2 18 are installed on the upper end of the foundation 3, and mounting frame 1 6 and mounting frame 2 18 are distributed front to back. The middle mesh belt conveyor mechanism includes several mesh belt conveyor mechanisms 12. The conveying directions of adjacent conveyor mechanisms among the top mesh belt conveyor mechanism 7 and several mesh belt conveyor mechanisms 12 are opposite. Several fixed frames 14 are evenly distributed along the front-back direction of the top mesh belt conveyor mechanism 7 and several mesh belt conveyor mechanisms 12. Fixed frames 29 are symmetrically distributed on the left and right sides of the fixed frames 14. Fixed frames 29 are fixedly installed on the upper end of the foundation 3. Several sliding cavities are evenly distributed along the up-down direction on the fixed frames 29. Sliding blocks 21 are respectively provided on the upper and lower sides of the sliding cavities. Spring rods 22 are fixed between the sliding blocks 21 on the upper and lower sides. The sliding blocks 21 are rotatably connected to the support rollers 20. The support rollers 20 are respectively arranged between the inner rings of the mesh belts of the top mesh belt conveyor mechanism 7 and several mesh belt conveyor mechanisms 12. The front side of the fixed frame 14 is provided with a rotating shaft 16, which is fixedly connected to the spreading plate 15. The rear side of the bottom mesh belt conveyor 12 is fixedly connected to the guide plate 17.
[0023] The working principle and beneficial effects of the above technical solution are as follows: The mesh belt conveyor mechanism includes a top mesh belt conveyor 7, a middle mesh belt conveyor, and a bottom mesh belt conveyor 13. All three mechanisms use stainless steel mesh belts. The feeding fan 5 first feeds the tea leaves onto the bottom mesh belt conveyor 13, and then the feeding fan feeds the tea leaves onto the top mesh belt conveyor 7. When the tea leaves pass over the spreading plate 15, they are spread out, improving the uniformity of the tea leaf thickness. By controlling the rotation of the rotating shaft 16, the spreading plate 15 can be driven. The rotation changes the distance between the spreading plate 15 and the top mesh belt conveyor 7, thereby adjusting the thickness of the tea leaves. The conveying directions between the top mesh belt conveyor 7 and the adjacent conveyors among the mesh belt conveyors 12 are opposite, and the top mesh belt conveyor 7 conveys the tea leaves forward, so that the tea leaves fall on the upper mesh belt conveyor 12. The mesh belt conveyors 12 drive the tea leaves to move and fall layer by layer on the lower mesh belt conveyor 12. The lower mesh belt conveyor 12 sends the tea leaves into the discharge port through the guide plate 17. Sliding blocks 21 are respectively installed on the upper and lower sides of the sliding cavity. The sliding blocks 21 slide along the sliding cavity, which can drive the support roller 20 to move up and down. The support roller 20 supports and tensions the mesh belt in the top mesh belt conveyor 7 and the middle mesh belt conveyor. When the weight of the tea leaves exerts a gravitational force on the mesh belt during the conveying process, the support roller 20 can support the mesh belt, avoiding the weight of the tea leaves from directly acting on the active and driven rollers in the mesh belt conveyor mechanism, which would increase the load on the mesh belt conveyor mechanism and easily cause the active and driven rollers to deviate. Limit detection sensors can be installed on the left and right sides of the active and driven rollers to monitor the operating status of the active and driven rollers and prevent them from deviating. The spring rod 22 provides support and shock absorption for the sliding block 21, ensuring the stability of the mesh belt conveyor process.
[0024] Example 4: Based on Example 3, such as Figures 1-4As shown, the hot air circulation mechanism includes a pit set in the middle of the upper end of the foundation 3, and insulation walls set on the left and right sides of the foundation 3. A combustion furnace 37 is installed in the pit. The air outlet of the combustion furnace 37 is connected to the air supply pipe 8. The air supply pipe 8 is connected to the first air supply frame 9. The first air supply frame 9 is connected to the second air supply frame 10 through several hot air pipes 11. The air outlet of the second air supply frame 10 is connected to the air inlet of the combustion furnace 37. Several hot air pipes 11 are correspondingly provided on the upper side of the inner ring of several mesh belt conveyor mechanisms 12. The several hot air pipes 11 are evenly distributed along the front and rear direction, and the diameters of the hot air pipes 11 in the several mesh belt conveyor mechanisms 12 are different.
[0025] The working principle and beneficial effects of the above technical solution are as follows: When the combustion furnace 37 is working, it can send the generated hot air to the first air supply frame 9 through the air supply pipe 8. The first air supply frame 9 sends the hot air to the second air supply frame 10 through the hot air pipe 11. The second air supply frame 10 sends the hot air back to the combustion furnace 37 for reheating and then sends it to the first air supply frame 9, realizing the circulation of hot air. The diameter of the hot air pipe 11 in the mesh belt conveyor mechanism 12 at different heights is different, resulting in different hot air volumes. Consequently, the drying temperatures corresponding to the mesh belt conveyor mechanism 12 at different heights are different. The temperature is divided into zones to meet the optimal drying effect of grinding tea. The pipe diameter of the hot air pipe 11 corresponding to the mesh belt conveyor mechanism 12 at different heights can be set according to the target zone temperature and the target ratio. The hot air internal circulation design optimizes the air flow path and avoids dead zones. At the same time, the temperature zone heating avoids large differences in air volume between multiple mesh belts, which would cause a sudden change in tea temperature when changing layers. Two return air ducts 38 are used to keep the temperature of the bottom mesh belt conveyor 13 uniform. Compared with the method of making the pit deeper and the height of the combustion furnace 37 lower in order to ensure the temperature of the bottom mesh belt conveyor 13 is uniform, the setting of return air ducts 38 reduces the heat energy consumption and makes the installation of combustion furnace 37 simple. Insulation walls are provided on both sides of the foundation 3. The insulation walls use thermal radiation heating to dry the tea leaves on the mesh belt conveyor. Hot air flows in the hot air pipe 11 and dries the tea leaves on the mesh belt conveyor by natural convection. The hot air pipe 11, the combustion furnace 37 and its connected air supply pipes and insulation walls are all heat sources. Through the combination of radiative heat transfer and natural convection, the loss of tea aroma during distillation can be reduced, the unique aroma of the furnace can be preserved, and the quality of the tea can be improved. A coating can be set on the side of the hot air pipe 11 away from the tea leaves to reduce heat loss and make the heat dissipation effect of the pipe closer to the tea leaves better, and the heat source utilization rate is higher. The insulation wall is the main structure that combines the wall and the steel structure, which makes the operation more stable and the heat source loss less. The combustion furnace 37 is equipped with a flame calibration device, which makes the gas temperature control and regulation more efficient and avoids the influence of unstable gas pressure on the temperature stability of the hot air. The flame calibration device, the combustion furnace 37, the main structure that combines the wall and the steel structure and the mesh belt conveyor all use existing equipment, and will not be described in detail in this invention.
[0026] Example 5: Based on Example 3, such as Figures 1-6 As shown, the defogging mechanism includes a bottom mesh belt conveyor. In structure 13, rotating rods 32 are symmetrically arranged on the left and right sides of the mesh belt. The rotating rods 32 are rotatably connected to connecting block 31. Connecting block 31 is slidably arranged in connecting groove 29 in the vertical direction. Connecting groove 29 is arranged on connecting plate 24. Connecting plate 24 is provided with a retraction port 28. Connecting plate 24 has two connecting grooves 36 distributed vertically. The two connecting grooves 36 are respectively connected to connecting groove 29. Connecting block 33 is provided at the connection between connecting groove 36 and connecting groove 29. Spring 35 is fixed between the upper and lower connecting blocks 33. The left and right sides of connecting block 33 are respectively connected to the connecting groove 36. A spring 34 is in contact with the connecting groove 36. A support roller 30 is rotatably mounted between the connecting blocks 33 on the left and right sides. The support roller 30 is in corresponding contact with the inner ring of the mesh belt of the bottom mesh belt conveyor 13. A top plate 25 is fixedly mounted on the upper side of the connecting plates 24 on the left and right sides. Several motors 26 are evenly distributed on the top plate 25 in the left and right direction. The motors 26 are fixedly connected to the fan 27. A bottom plate 23 is fixedly mounted on the lower side of the connecting plates 24 on the left and right sides. The bottom plate 23 is slidably mounted on the foundation 3 in the front and back direction. The recovery port 28 is connected to the interior of the bottom plate 23.
[0027] The working principle and beneficial effects of the above technical solution are as follows: The width of the bottom mesh belt conveyor 13 in the front-to-back direction is greater than the width of the top mesh belt conveyor 7 and the middle mesh belt conveyor. After the tea foam falls layer by layer onto the bottom mesh belt conveyor 13, the support roller 2 30 is positioned such that its upper end is slightly lower than the upper end of the drive roller. This creates a "lower" area on the mesh belt of the bottom mesh belt conveyor 13 at the position of the support roller 2 30, allowing the tea foam on the mesh belt to flow into this "lower" area. At this time, the spring 2 35 is compressed, causing the motor 26 to operate. The motor 26 then drives the blower fan 27. The conveyor belt blows tea foam towards the collection port 28, where it flows into the bottom plate 23, which acts as a collection box. As the conveyor belt moves, it drives the rotating rod 32. The rotating rod 32, via connecting block 31, moves the connecting plate 24. When the rotating rod 32 reaches the position of the driving roller or driven roller, the "lower" area of the conveyor belt recovers due to the support provided by the driving roller or driven roller. Spring 35 then drives connecting block 33 back to its original position. Simultaneously, the limiting effect of the driving roller or driven roller pushes the support roller 30 to move. The second support roller 30 drives the second connecting block 33 into the second connecting groove 36, compressing the first spring 34. At this time, the second connecting block 33 no longer limits the up-and-down movement of the first connecting block 31. As the rotating rod 32 moves from one side (upper side) of the conveyor belt to the other side (lower side), the rotating rod 32 drives the first connecting block 31 to slide up and down along the first connecting groove 29 until the rotating rod 32 leaves the position of the driving roller or the driven roller. At this point, the first connecting block 31 moves to the uppermost or lowermost side of the first connecting groove 29. The rotating rod 32 drives the connecting block 31 to move the connecting block 31. The connecting plate 24 moves in the opposite direction, and at the same time, under the elastic action of the spring 34, the connecting block 33 returns to its original position. At this time, the mesh belt of the bottom mesh belt conveyor 13 has a "depression" again at the position of the support roller 30, so that tea foam is collected again. The defoaming mechanism is connected to the bottom mesh belt conveyor 13, so that the mesh belt of the bottom mesh belt conveyor 13 forms a "depression" and can move back and forth with the movement of the bottom mesh belt conveyor 13. That is, the defoaming mechanism and the "depression" always remain in correspondence, which facilitates the collection of tea foam.
[0028] Example 6: Based on Example 3, a control system for a high-efficiency tea grinder includes: a monitoring module: the monitoring module monitors the elastic force of the spring rods 22 correspondingly set in several mesh belt conveyor mechanisms 12, and obtains the elastic force Fim1+Fim2 of the spring rod 22 at the m-th position in the i-th mesh belt conveyor mechanism 12. Control module: The control module compares the heat-drying effect of the i-th mesh belt conveyor 12 during the tea-transfer process with the target heat-drying effect. If the heat-drying effect of the mesh belt conveyor 12 during the tea-transfer process exceeds the target heat-drying effect range, the control module automatically adjusts the transmission speed of the i-th mesh belt conveyor 12. Several mesh belt conveyor mechanisms 12 are numbered as i, i=1, 2, 3, ..., j, where j is the number of mesh belt conveyor mechanisms 12. Several spring rods 22 that are in contact with each mesh belt conveyor mechanism 12 are numbered as m according to the front-back distribution direction, m=2, 3, 4, ..., n, where n is the number of spring rods 22 along the front-back direction. Among them, the spring rods 22 on the left side of the same position along the front-back direction are numbered as m1, and the spring rods 22 on the right side of the same position along the front-back direction are numbered as m2. Finally, the elastic force Fim1+Fim2 of the spring rod 22 at the m position in the i-th mesh belt conveyor mechanism 12 is obtained. The control module calculates the drying effect of the tea from m-1 to m based on the elastic force of the spring rod 22 at the (m-1)th position in the i-th mesh belt conveyor 12, the elastic force of the spring rod 22 at the m-th position after the target time, and the formula [Fi(m-1)1+Fi(m-1)2]-(Fim1+Fim2). The target drying effect is the target drying amount of the tea transported by the i-th mesh belt conveyor 12 from m-1 to m, and the target time is the time it takes for the tea to reach m from m-1 at the transmission speed of the i-th mesh belt conveyor 12.
[0029] The working principle and beneficial effects of the above technical solution are as follows: The control module monitors all i mesh belt conveyor mechanisms 12. Support rollers 20 support the mesh belts on the conveyor mechanisms 12. Therefore, when the weight of the tea leaves on the mesh belt changes, the supporting force of the support rollers 20 changes, and their elastic force changes. The change in elastic force allows monitoring of the tea leaf weight change (ignoring the supporting forces of the driving roller, driven roller, and other support rollers 20 on the mesh belt corresponding to the support roller 20 at that point). The elastic force can be calculated by multiplying the deformation distance of the spring rod 22 monitored by the distance sensor by the spring coefficient of the spring rod 22. By judging the elastic force of the spring rod 22 at point m-1 and at point m after the target time (where m+1≤n), the change in the elastic force of the spring rod 22 is obtained, which represents the heat-drying effect of the tea leaves. The actual drying amount is calculated by the control module according to the formula [Lim-Li(m-1)] / Vi, where Lim-Li(m-1) is the distance between the spring rods 22 at m and m-1, and Vi is the transmission speed of the i-th mesh belt conveyor 12. The control module uses a controller based on existing technology, which will not be elaborated upon in this invention. If the actual drying amount is greater than the target drying effect range (theoretical drying amount), the control module controls the transmission speed of the i-th mesh belt conveyor 12 to increase. If the actual drying amount is less than the target drying effect range (theoretical drying amount), the control module controls the transmission speed of the i-th mesh belt conveyor 12 to decrease, so that the drying effect of the tea leaves from m to m+1 reaches the target drying effect, which is beneficial to improving the drying effect of the tea leaves.
[0030] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A high-efficiency tea grinder, characterized in that: Includes a foundation (3), a feeding mechanism is installed on the upper front side of the foundation (3), a multi-layer belt conveyor and a hot air circulation mechanism are installed in the upper middle part of the foundation (3), the multi-layer belt conveyor and the hot air circulation mechanism are set accordingly, a circulating discharge mechanism is installed on the upper rear side of the foundation (3), the feeding mechanism and the circulating discharge mechanism are set accordingly to the multi-layer belt conveyor, and a defoaming mechanism is connected to the lower side of the multi-layer belt conveyor.
2. The high-efficiency tea grinder according to claim 1, characterized in that: The feeding mechanism includes a front-end loose tea machine (1), a feeding fan (5) is installed at the lower end of the front-end loose tea machine (1), the outlet of the feeding fan (5) is connected to the loose tea machine frame (2), the loose tea machine frame (2) is installed at the rear end of the front-end loose tea machine (1), the loose tea machine frame (2) is installed on the upper front side of the foundation (3), and the rear side of the loose tea machine frame (2) is correspondingly set with the multi-layer belt conveyor mechanism.
3. The high-efficiency tea grinder according to claim 1, characterized in that: The circulating discharge mechanism includes a loose tea machine frame two (4), a feeding fan is installed inside the loose tea machine frame two (4), the loose tea machine frame two (4) is installed on the upper rear side of the foundation (3), the upper rear side of the foundation (3) is provided with a discharge port, and the front side of the loose tea machine frame two (4) is correspondingly set with a multi-layer belt conveyor mechanism.
4. A high-efficiency tea grinder according to claim 1, characterized in that: The multi-layer belt conveyor mechanism includes a top mesh belt conveyor mechanism (7), a middle mesh belt conveyor mechanism and a bottom mesh belt conveyor mechanism (13), and the top mesh belt conveyor mechanism (7), the middle mesh belt conveyor mechanism and the bottom mesh belt conveyor mechanism (13) have different sizes. The top mesh belt conveyor mechanism (7), the middle mesh belt conveyor mechanism and the bottom mesh belt conveyor mechanism (13) are all installed between mounting frame one (6) and mounting frame two (18). Mounting frame one (6) and mounting frame two (18) are installed on the upper end of the foundation (3), and mounting frame one (6) and mounting frame two (18) are distributed front and back.
5. A high-efficiency tea grinder according to claim 4, characterized in that: The middle mesh belt conveyor mechanism includes several mesh belt conveyor mechanisms (12). The conveying directions of adjacent conveyor mechanisms in the top mesh belt conveyor mechanism (7) and several mesh belt conveyor mechanisms (12) are opposite. Several fixed frames (14) are evenly distributed along the front-back direction in the top mesh belt conveyor mechanism (7) and several mesh belt conveyor mechanisms (12). Fixed frames (29) are symmetrically distributed on the left and right sides of the fixed frames (14). Fixed frames (29) are fixedly installed on the upper end of the foundation (3). Several sliding cavities are evenly distributed along the up-down direction on the fixed frames (29). Sliding blocks (21) are respectively provided on the upper and lower sides of the sliding cavities. Spring rods (22) are fixed between the sliding blocks (21) on the upper and lower sides. The sliding blocks (21) are rotatably connected to the support rollers (20). The support rollers (20) are respectively arranged between the inner rings of the mesh belts of the top mesh belt conveyor mechanism (7) and several mesh belt conveyor mechanisms (12).
6. A high-efficiency tea grinder according to claim 5, characterized in that: The front side of the fixed frame (14) is provided with a rotating shaft (16), which is fixedly connected to the spreading plate (15). The rear side of the bottom mesh belt conveyor (12) is fixedly connected to the guide plate (17).
7. A high-efficiency tea grinder according to claim 5, characterized in that: The hot air circulation mechanism includes a pit set in the middle of the upper end of the foundation (3), and insulation walls set on the left and right sides of the foundation (3). A combustion furnace (37) is installed in the pit. The air outlet of the combustion furnace (37) is connected to the air supply pipe (8). The air supply pipe (8) is connected to the first air supply frame (9). The first air supply frame (9) is connected to the second air supply frame (10) through several hot air pipe groups and two return air pipes (38). The air outlet of the second air supply frame (10) is connected to the air inlet of the combustion furnace (37). Several hot air pipe groups are respectively set on the upper side of several mesh belt conveyor mechanisms (12). The hot air pipe group includes several hot air pipes (11). The several hot air pipes (11) are evenly distributed in the left and right direction, and the diameter of the hot air pipes (11) in the several hot air pipe groups is different. The two return air pipes (38) are distributed on the left and right sides of the bottom mesh belt conveyor mechanism (13).
8. A high-efficiency tea grinder according to claim 4, characterized in that: The defogging mechanism includes rotating rods (32) symmetrically arranged on the left and right sides of the mesh belt in the bottom mesh belt conveyor mechanism (13). The rotating rods (32) are rotatably connected to the first connecting block (31). The first connecting block (31) is slidably arranged in the first connecting groove (29) in the vertical direction. The first connecting groove (29) is arranged on the connecting plate (24). The connecting plate (24) is provided with a recovery port (28). The connecting plate (24) has two second connecting grooves (36) distributed vertically. The two second connecting grooves (36) are respectively connected to the first connecting groove (29). The second connecting block (33) is provided at the connection between the second connecting groove (36) and the first connecting groove (29). The second connecting block (33) is fixedly provided between the second connecting blocks (33) on the upper and lower sides. Spring 1 (34) is in contact with the left and right sides respectively. Spring 1 (34) is fixedly installed in the connecting groove 2 (36). Support roller 2 (30) is rotatably installed between the connecting blocks 2 (33) on the left and right sides. Support roller 2 (30) is in contact with the inner ring of the mesh belt of the bottom mesh belt conveyor (13). Top plate (25) is fixedly installed on the upper side of the connecting plate (24) on the left and right sides. Several motors (26) are evenly distributed on the top plate (25) in the left and right direction. The motors (26) are fixedly connected to the fan (27). Bottom plate (23) is fixedly installed on the lower side of the connecting plate (24) on the left and right sides. Bottom plate (23) is slidably installed on the foundation (3) in the front and back direction. Recycling port (28) is connected to the interior of bottom plate (23).
9. A control system for a well-drilling type energy-saving tea grinder as described in any one of claims 1-8, characterized in that: Includes: Monitoring module: The monitoring module monitors the elastic force of the spring rod (22) corresponding to the mesh belt conveyor (12) respectively, and obtains the elastic force Fim1+Fim2 of the spring rod (22) at the m position in the i-th mesh belt conveyor (12); Control module: The control module compares the heat drying effect of the i-th mesh belt conveyor (12) in the process of transporting tea with the target heat drying effect. If the heat drying effect of the mesh belt conveyor (12) in the process of transporting tea exceeds the range of the target heat drying effect, the control module automatically adjusts the transmission speed of the i-th mesh belt conveyor (12).
10. The control system for a high-efficiency tea grinder according to claim 9, characterized in that: Number the several mesh belt conveyor mechanisms (12) as i, i=1, 2, 3, ..., j, where j is the number of mesh belt conveyor mechanisms (12). Number the several spring rods (22) that are in contact with each mesh belt conveyor mechanism (12) according to their front-back distribution direction as m, m=2, 3, 4, ..., n, where n is the number of spring rods (22) along the front-back direction. Among them, the spring rods (22) on the left side of the same position along the front-back direction are numbered m1, and the spring rods (22) on the right side of the same position along the front-back direction are numbered m2. Finally, the spring rod at the m position in the i-th mesh belt conveyor mechanism (12) is obtained. The elastic force Fim1+Fim2 of 22) is calculated by the control module based on the elastic force of the spring rod (22) at the (m-1)th position in the i-th mesh belt conveyor (12) and the elastic force of the spring rod (22) at the mth position after the target time, as well as the formula [Fi(m-1)1+Fi(m-1)2]-(Fim1+Fim2). The target drying effect is the target drying amount of tea transported by the i-th mesh belt conveyor (12) from the m-1th position to the mth position. The target time is the time it takes for the tea to reach the mth position from the m-1th position at the transmission speed of the i-th mesh belt conveyor (12).