Air treatment and leaf water loss rate on-line monitoring device for tea processing environment

Abstract

The utility model discloses an air treatment and leaf water loss rate on-line monitoring device for a tea processing environment, and belongs to the field of tea processing. The air treatment and leaf water loss rate online monitoring device for the tea processing environment comprises a withering chamber, an air supply pipe communicated with the withering chamber is installed on one side of the withering chamber, a pipe section is installed at the other end of the air supply pipe, and a fresh air valve is installed at the end, away from the air supply pipe, of the pipe section. A filter screen used for filtering impurities is installed at the end, close to the fresh air valve, in the pipe section, an air feeder, an air cooling piece, a heating resistor and an air humidifying piece are sequentially installed in the pipe section in the direction away from the filter screen, and the air feeder, the air cooling piece, the heating resistor and the air humidifying piece are connected with the pipe section through connecting pieces. The withering chamber is connected with the air inlet end of the exhaust fan through an exhaust pipe, the withering chamber is communicated with the fresh air valve through an air return pipe, and the device disclosed by the utility model has the following beneficial effects that the production material consumption of a pipe section is reduced, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an air treatment device for tea processing environment and an on-line monitoring device for leaf water loss rate, belonging to the field of tea processing. Background Technique

[0002] Tea processing is a process of converting freshly picked tea leaves into ready-to-drink finished tea, including steps such as picking, withering, fixation, rolling, fermentation (for some tea types), drying, grading and screening, packaging and storage. Among them, the withering process has a crucial impact on the tea quality. Tea withering is a process of making the tea leaves lose water under certain environmental conditions and at the same time promoting the conversion of endogenous substances in the tea leaves. Most traditional tea processing is carried out under natural conditions for withering, highly dependent on weather conditions. During processing, it is necessary to adjust the withering process parameters in a timely manner according to the weather changes, which requires extremely high production experience of practitioners. Once the adjustment is improper, it will seriously affect the tea quality, and there is a problem of "making tea depending on the weather".

[0003] With the development of industrial technology, at present, there has emerged a method of controlling the environmental factors of tea withering processing to a certain extent by installing heaters and dehumidifying devices in the withering room, reducing the dependence on weather conditions during the withering process and effectively improving the quality and efficiency of tea processing.

[0004] However, the control accuracy and stability of the conditions of the open processing environment by devices such as household air conditioners, heating elements, and dehumidifiers are not high, and there are significant differences between the actual air conditions of the processing environment and the set conditions. Moreover, there is no humidifying function in the current tea withering equipment, and it is impossible to achieve stable humidity in areas with dry air. At the same time, the water loss situation is a key indicator reflecting the withering degree of tea leaves. At present, it is still impossible to on-line and real-time monitor the water loss of tea leaves to help adjust the processing parameters and achieve the purpose of stabilizing the tea quality. In addition, the processing capacity of the scattered installed devices cannot fully meet the stable demand for environmental control of the processing workshop, and an integrated device of the workshop and the environmental control system is needed to support. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an air treatment device for tea processing environment and an on-line monitoring device for leaf water loss rate to solve the problems raised in the above background technique. The utility model reduces the production material consumption of the pipe section and improves the disassembly and assembly efficiency.

[0006] To achieve the above object, the utility model is realized by the following technical solutions: A device for air treatment in a tea processing environment and on-line monitoring of the leaf water loss rate, including a withering chamber, one side of the withering chamber is equipped with an air supply pipe communicated with the withering chamber, the other end of the air supply pipe is installed with a pipe section, the end of the pipe section far from the air supply pipe is installed with a fresh air valve, and a filter screen for filtering debris is installed at one end of the pipe section close to the fresh air valve. In the pipe section, a blower, an air cooling element, a heating resistor and an air humidifying element are installed in sequence in the direction away from the filter screen. The blower, the air cooling element, the heating resistor and the air humidifying element are connected to the pipe section through connecting pieces. The withering chamber is connected to the intake end of an exhaust fan through an exhaust pipe, and the withering chamber is communicated with the fresh air valve through a return air pipe. A weighing element for monitoring the water loss rate of tea leaves is arranged in the withering chamber (1).

[0007] Further, a temperature display, a humidity display and an oxygen content display are installed on one side of the withering chamber. The three are respectively connected to a temperature sensor, a humidity sensor and an oxygen content sensor, and are used to display the temperature, humidity and oxygen content in the withering chamber in real time. The temperature display, the humidity display and the oxygen content display are arranged from top to bottom.

[0008] Further, the connecting piece includes a carrier plate. A strip-shaped opening is formed in the lower surface of the pipe section, and the carrier plate is inserted into the strip-shaped opening. The blower and the heating resistor are both installed on the upper surface of the carrier plate. The water inlet pipe and the water return pipe in the air cooling element penetrate through the carrier plate, and the water delivery pipe in the air humidifying element penetrates through the carrier plate. L-shaped plates are fixedly connected to both ends of the carrier plate. There is a convex block between the horizontal part of the L-shaped plate and the pipe section. The convex block is fixedly connected to the pipe section. There is a gap between the convex block and the horizontal part of the L-shaped plate. A small hole is formed in the surface of the horizontal part of the L-shaped plate facing the convex block, and a connecting screw is inserted into the small hole. One end of the connecting screw is threadedly connected to the convex block.

[0009] Further, the air cooling element includes a cold water tank. The cold water tank is arranged outside the pipe section. The cold water tank is connected to the liquid inlet end of a circulation pump through a connecting pipe. The liquid outlet end of the circulation pump is installed with a water inlet pipe. One end of the water inlet pipe penetrates through the carrier plate and is connected to the water inlet end of a radiator. The radiator is arranged in the pipe section. The liquid outlet end of the radiator is communicated with the cold water tank through a water return pipe.

[0010] Further, the air humidifying element includes a water storage tank. The water storage tank is arranged outside the pipe section. The water storage tank is connected to the liquid inlet end of a water pump through a connecting pipe. The liquid outlet end of the water pump is installed with a water delivery pipe. The water delivery pipe penetrates through the carrier plate. One end of the water delivery pipe inside the pipe section is installed with a water distribution pipe, and a plurality of atomizing nozzles are uniformly installed on the outer surface of the water distribution pipe.

[0011] Further, the outer periphery of the carrier board is wrapped with a sealing frame adhered to the carrier board, and the sealing frame is attached to the inner wall of the strip-shaped opening.

[0012] Further, the weighing member includes a weighing platform. A weighing platform for supporting the withering rack is provided at the lower part inside the withering chamber. The weighing platform is installed on the upper surface of the weighing frame. A gravity induction receiving device is installed directly in front of the weighing frame. Gravity sensors are installed at the four corners of the lower surface of the weighing frame. The gravity sensors are arranged on the bottom frame. The four gravity sensors are connected by wires. The gravity induction receiving device is connected to the gravity sensors by wires. Force-receiving holes are provided at the four corners of the upper surface of the bottom frame. Force-receiving frames are installed on the gravity sensors, and the force-receiving frames are inserted into the force-receiving holes. Flap pieces are installed at the four corners of the bottom frame. A display support base is installed in front of the bottom frame. An electronic display is installed at the upper end of the display support base. The electronic display is connected to the gravity induction receiving device by wires.

[0013] Further, in the tea processing environment air treatment and leaf water loss rate online monitoring device provided by the present utility model, the air humidifying member adopts a product of model ZWR-01-20 of Aierlangte Company. The response speed of this air humidifying member is 20 ms, and it can stably maintain 40-90%.

[0014] Further, in the tea processing environment air treatment and leaf water loss rate online monitoring device provided by the present utility model, the weighing member for monitoring the water loss rate of tea leaves adopts a product of model JDSCS-B20S of Judin Tianheng of Kunshan Jutian Instrument Equipment Co., Ltd. This weighing member can make the detection accuracy of the leaf water loss rate reach 0.05%.

[0015] Further, the air supply pipe and the air return pipe are arranged on the side of the withering chamber, that is, a horizontal air flow mode is formed by side air supply and side air return, which greatly improves the uniformity of the contact between tea leaves and the ambient air.

[0016] Further, in the tea processing environment air treatment and leaf water loss rate online monitoring device provided by the present utility model, by arranging the components for adjusting the temperature, humidity, and oxygen content of the air in the pipe section, and finally sending the air meeting the requirements of temperature, humidity, and oxygen content into the withering chamber, the control of the temperature, humidity, and air flow rate in the withering chamber can be achieved. By selecting appropriate components for adjusting the temperature, humidity, and oxygen content, the specific temperature control accuracy can be further improved to ±2°C, and the control range is 20°C - 35°C; the humidity control accuracy reaches ±5%, and the control range is 40% - 90%; the ambient air flow rate is ±0.5 m / s, and the control range is 0.3 - 1.0 m / s.

[0017] The beneficial effects of the present utility model:

[0018] 1. During the working process, the fresh air valve is opened, and air enters from the fresh air valve, passes through the air supply fan and enters the pipe section. According to the requirements of the withering chamber, if it is necessary to cool the air, the circulation pump works, and then the cold water in the cold water tank enters the radiator, so that the cold water entering the radiator exchanges heat with the air in the pipe section to achieve air cooling and cool the air; if it is necessary to heat the air, the circuit of the heating resistor is connected, and after the heating resistor is powered on, it heats the incoming air; when it is necessary to adjust the water content of the air, the water pump works, and when the water pump works, it transports the water in the water storage tank to the water distribution pipe, and then the water forms a mist through the atomizing nozzle and is sprayed in the pipe section to achieve humidification of the air in the pipe section and control the moisture loss rate of the air.

[0019] 2. When the fresh air valve is closed, the oxygen-containing fresh air no longer enters the pipe section. The air in the withering chamber enters the pipe section from the return air duct under the action of the air supply fan, and then returns to the withering chamber from the air supply duct again. In terms of air regulation, it can effectively adjust the oxygen demand of the air and achieve the purpose of tea withering, improving the withering rate and quality of tea.

[0020] 3. By installing a temperature display, a humidity display and an oxygen content display on the withering chamber, the temperature, humidity and oxygen content in the withering chamber can be monitored online. When the temperature, humidity and oxygen content in the withering chamber do not meet the set values, the temperature, humidity and oxygen content of the air entering the withering chamber can be adjusted.

[0021] 4. Insert the carrier plate into the strip-shaped opening, align the horizontal part of the L-shaped plate with the convex block, and then pass the connecting screw through the L-shaped plate and thread it with the convex block, so that the air supply fan, radiator, heating resistor and water distribution pipe can be installed in the pipe section with a small number of connecting screws, which is beneficial to improving the disassembly and assembly efficiency. At the same time, the convex block locally increases the wall thickness of the pipe section for installing the connecting screw, and there is no need to increase the wall thickness of the whole pipe section, reducing the production material consumption of the pipe section.

[0022] 5. During the withering process of the tea withering rack, the withering rack is directly placed on the weighing platform, and the self-weight of the withering rack when it is just placed and the weight after placing the tea are recorded. During the withering process, there is no need to remove the withering rack. The weighing platform and the withering rack are put into the withering chamber together, and the water loss situation and rate of tea withering can be recorded at any time, improving the practicality and convenience of monitoring the water loss of tea, and more accurately detecting the water loss situation of tea to facilitate data recording, and then adjusting the conditions of the withering chamber to obtain the best tea withering parameter design. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of an air treatment and leaf water loss rate online monitoring device for a tea processing environment of the present utility model;

[0024] Figure 2 Schematic diagram of the radiator, cold water tank and circulation pump in the device for air treatment of tea processing environment and on-line monitoring of leaf water loss rate of the present utility model;

[0025] Figure 3 Schematic diagram of the water distribution pipe, water pump and water storage tank in the device for air treatment of tea processing environment and on-line monitoring of leaf water loss rate of the present utility model;

[0026] Figure 4 Assembly schematic diagram of the weighing platform, weighing frame and electronic display in the device for air treatment of tea processing environment and on-line monitoring of leaf water loss rate of the present utility model;

[0027] Figure 5 Top view schematic diagram of the chassis in the device for air treatment of tea processing environment and on-line monitoring of leaf water loss rate of the present utility model.

[0028] In the figure: 1 - withering chamber, 2 - temperature display, 3 - humidity display, 4 - oxygen content display, 5 - pipe section, 6 - air supply pipe, 7 - water delivery pipe, 8 - water pump, 9 - water storage tank, 10 - heating resistor, 11 - cold water tank, 12 - circulation pump, 13 - water inlet pipe, 14 - radiator, 15 - air supply fan, 16 - filter screen, 17 - carrier plate, 18 - exhaust pipe, 19 - exhaust fan, 20 - return air pipe, 21 - L-shaped plate, 22 - connecting screw, 23 - convex block, 24 - fresh air valve, 25 - water distribution pipe, 26 - atomizing nozzle, 27 - return water pipe, 28 - weighing platform, 29 - weighing frame, 30 - display support seat, 31 - electronic display, 32 - stress frame, 33 - gravity induction receiving device, 34 - chassis, 35 - baffle, 36 - stress hole. Detailed implementation manners

[0029] The following is a detailed description of the present utility model.

[0030] The characteristics of the tea leaf withering process are introduced as follows: During the entire withering process, the water loss rate of tea leaves usually shows a pattern of being fast at first and then slow. This is because when the tea leaves start to wither, the internal water content is relatively high, and the water on the leaf surface is easily evaporated. Moreover, at the initial stage of withering, the water gradient inside and outside the leaf is relatively large, and the water diffuses from the inside of the tea leaves to the outside at a relatively fast speed. As the water loss progresses, the water gradient inside and outside the leaf gradually decreases, and the water loss rate slows down accordingly. In addition, as the water loss progresses, the tea leaf cells gradually shrink, the leaf structure changes, and the diffusion path of water from the inside of the cells to the outside becomes longer, and the diffusion resistance increases, resulting in a slower water loss rate. Besides the above internal factors of tea leaves, the temperature and humidity of the external environment also have a great impact on the withering of tea leaves. Under the condition of constant temperature and humidity, the higher the environmental humidity, the smaller the water gradient inside and outside the leaf, and the slower the water loss rate of the tea leaves; under the same humidity condition, a decrease in temperature will slow down the water loss rate.

[0031] Therefore, in order to achieve controllability of the withering degree of tea leaves and be able to monitor the water loss rate of tea leaves in real time, the present utility model provides a device for air treatment in the tea processing environment and on-line monitoring of the leaf water loss rate, which is specifically introduced as follows:

[0032] Embodiment 1

[0033] As Figure 1 shown, a device for air treatment in the tea processing environment and on-line monitoring of the leaf water loss rate of the present utility model includes a withering chamber 1. On one side of the withering chamber 1, a temperature display 2, a humidity display 3, and an oxygen content display 4 are installed. The temperature display 2, the humidity display 3, and the oxygen content display 4 are respectively connected to a temperature sensor, a humidity sensor, and an oxygen content sensor, and are used to display the temperature, humidity, and oxygen content in the withering chamber 1 in real time. On one side of the withering chamber 1, an air supply pipe 6 communicating with the withering chamber 1 is installed. At the other end of the air supply pipe 6, a pipe section 5 is installed. At the end of the pipe section 5 far from the air supply pipe 6, a fresh air valve 24 is installed. The withering chamber 1 is connected to the intake end of an exhaust fan 19 through an exhaust pipe 18, and the withering chamber 1 is connected and communicated with the fresh air valve 24 through a return air pipe 20. By setting the air supply pipe 6 and the return air pipe 20, the air can form an internal circulation when no external air is required. That is, when the fresh air valve 24 is closed, the oxygen-containing fresh air no longer enters the pipe section 5, and the air in the withering chamber 1 enters the pipe section 5 from the return air pipe 20 under the action of a blower 15, and then returns to the withering chamber 1 from the air supply pipe 6 again. In terms of air regulation, the air demand can be effectively adjusted to achieve the purpose of tea leaf withering and improve the withering rate and quality of tea leaves.

[0034] During the withering process, it is judged by the real-time display value of the oxygen content monitor 4. When the oxygen content does not meet the preset withering oxygen content requirement, the fresh air valve 24 is opened, so that the oxygen-containing fresh air enters the pipe section 5, and then the oxygen content of the air in the withering chamber 1 is adjusted. Similarly, if the real-time display values of the temperature monitor 2 and the humidity monitor 3 do not meet the preset withering temperature and humidity conditions, the air in the withering chamber 1 can also be quickly replaced by opening the fresh air valve 24, so that it quickly meets the corresponding conditions.

[0035] Refer to Figure 1 and Figure 2 As shown in FIGS. and, a filter net 16 for filtering sundries is installed at one end of the pipe section 5 close to the fresh air valve 24. A blower 15, a radiator 14, a heating resistor 10 and a water distribution pipe 25 are sequentially installed in the pipe section 5 in the direction away from the filter net 16. A strip-shaped opening is formed on the lower surface of the pipe section 5, and a carrier plate 17 is inserted into the strip-shaped opening. The outer periphery of the carrier plate 17 is wrapped with a sealing frame adhered to the carrier plate 17, and the sealing frame fits with the inner wall of the strip-shaped opening. The blower 15 and the heating resistor 10 are both installed on the upper surface of the carrier plate 17. A cold water tank 11 is arranged outside the pipe section 5. The cold water tank 11 is connected to the liquid inlet end of a circulation pump 12 through a connecting pipe. The liquid outlet end of the circulation pump 12 is provided with a water inlet pipe 13. One end of the water inlet pipe 13 penetrates through the carrier plate 17 and is connected to the water inlet end of the radiator 14. The radiator 14 is arranged in the pipe section 5. The liquid outlet end of the radiator 14 is communicated with the cold water tank 11 through a return pipe 27. The return pipe 27 penetrates through the carrier plate 17. When the circulation pump 12 works, the cold water in the cold water tank 11 enters the radiator 14, so that the cold water entering the radiator 14 exchanges heat with the air in the pipe section 5 to realize the cooling of the air; when heating is required, the corresponding heating operation can be carried out through the heating resistor 10.

[0036] Refer to Figure 1 and Figure 3 As shown in FIGS. and, a water storage tank 9 is arranged outside the pipe section 5. The water storage tank 9 is connected to the liquid inlet end of a water pump 8 through a connecting pipe. The liquid outlet end of the water pump 8 is provided with a water delivery pipe 7. The water delivery pipe 7 penetrates through the carrier plate 17. One end of the water delivery pipe 7 inside the pipe section 5 is provided with a water distribution pipe 25. A plurality of atomizing nozzles 26 are uniformly installed on the outer surface of the water distribution pipe 25. When the water pump 8 operates, the water pump 8 pumps the water in the water storage tank 9 into the water distribution pipe 25, and then the water forms a mist and is sprayed in the pipe section 5 through the atomizing nozzles 26 to realize the humidification of the air in the pipe section 5; if the humidity is too high, the air in the withering chamber 1 can be quickly replaced by the fresh air valve 24 to reduce its humidity.

[0037] Refer to Figures 1 - 3, both ends of the carrier plate 17 are fixedly connected with L-shaped plates 21. There is a convex block 23 between the horizontal part of the L-shaped plate 21 and the pipe section 5. The convex block 23 is fixedly connected with the pipe section 5. There is a gap between the convex block 23 and the horizontal part of the L-shaped plate 21. A small hole is opened on the surface of the horizontal part of the L-shaped plate 21 facing the convex block 23. A connecting screw 22 is inserted into the small hole. One end of the connecting screw 22 is threadedly connected with the convex block 23, so that the carrier plate 17 is inserted into the strip-shaped opening, and the horizontal part of the L-shaped plate 21 is aligned with the convex block 23. Subsequently, the connecting screw 22 is passed through the L-shaped plate 21 and threadedly connected with the convex block 23, realizing that the blower 15, the radiator 14, the heating resistor 10 and the water distribution pipe 25 can be installed in the pipe section 5 by using a small number of connecting screws 22, which is beneficial to improving the disassembly and assembly efficiency. At the same time, the convex block 23 realizes locally increasing the wall thickness of the pipe section 5 for installing the connecting screw 22, without increasing the wall thickness of the whole pipe section 5, reducing the production material consumption of the pipe section 5.

[0038] Refer to Figure 1 , Figure 4 and Figure 5 , the weighing member includes a weighing platform 28. A weighing platform 28 for supporting the withering rack is arranged at the lower part inside the withering chamber 1. The weighing platform 28 is installed on the upper surface of the weighing rack 29. A gravity induction receiving device 33 is installed directly in front of the weighing rack 29. Gravity sensors are installed at the four corners of the lower surface of the weighing rack 29. The gravity sensors are arranged on the bottom frame 34. The working principle of the gravity sensors has been fully disclosed in the prior art, so it will not be elaborated here. The four gravity sensors are connected by wires. The gravity induction receiving device 33 is connected with the gravity sensors by wires. Force receiving holes 36 are opened at the four corners of the upper surface of the bottom frame 34. A force receiving frame 32 is installed on the gravity sensor, so that the force receiving frame 32 is inserted into the force receiving hole 36 to play a limiting role. Flap pieces 35 are installed at the four corners of the bottom frame 34. The flap pieces 35 realize the limitation of the position of the weighing platform 28. A display support 30 is installed in front of the bottom frame 34. An electronic display 31 is installed at the upper end of the display support 30. The electronic display 31 is connected with the gravity induction receiving device 33 by wires. The gravity induction receiving device 33 can adopt a PLC controller. During the withering process of the tea withering rack, the withering rack can be directly placed on the weighing platform 28 to record the self-weight of the just-placed withering rack and the weight after placing the tea. During the withering process, there is no need to remove the withering rack. The weighing platform 28 and the withering rack are put into the withering chamber 1 together, and the water loss situation and rate of the tea withering can be recorded at any time, improving the practicability and convenience of monitoring the water loss of the tea, and more accurately detecting the water loss situation of the tea to facilitate recording data, and then adjusting the conditions of the withering chamber to obtain the best tea withering parameter design.

[0039] The working principle of the present utility model:

[0040] During the working process, the fresh air valve 24 is opened, and air enters through the fresh air valve 24 and is sent into the pipe section 5 by the air blower 15. According to the requirements of the withering chamber 1, if the air needs to be cooled, the circulation pump 12 is made to work, and then the cold water in the cold water tank 11 enters the radiator 14. Thus, the cold water entering the radiator 14 exchanges heat with the air in the pipe section 5 to achieve air cooling and cool the air. If the air needs to be heated, the circuit of the heating resistor 10 is connected, and after the heating resistor 10 is powered on and works, it heats the incoming air. When the moisture content of the air needs to be adjusted, the water pump 8 is made to work. When the water pump 8 works, the water in the water storage tank 9 is transported to the water distribution pipe 25, and then the water forms a mist through the atomizing nozzles 26 and is sprayed in the pipe section 5 to achieve humidification of the air in the pipe section 5 and control the moisture loss rate of the air. When the fresh air valve 24 is closed, the oxygen-containing fresh air no longer enters the pipe section 5, and the air in the withering chamber 1 enters the pipe section 5 from the return air duct 20 under the action of the air blower 15, and then returns to the withering chamber 1 from the supply air duct 6 again, effectively adjusting the air demand, achieving the purpose of tea withering, and improving the withering rate and quality of tea. By installing a temperature display 2, a humidity display 3, and an oxygen content display 4 on the withering chamber 1, the temperature, humidity, and oxygen content in the withering chamber 1 can be monitored online. The working principles of the temperature display 2, the humidity display 3, and the oxygen content display 4 have been fully disclosed in the prior art, so they will not be elaborated again. When the temperature, humidity, and oxygen content in the withering chamber 1 do not meet the set values, the temperature, humidity, and oxygen content of the air entering the withering chamber 1 can be adjusted by the above methods.

[0041] Insert the carrier plate 17 into the strip-shaped opening, align the horizontal part of the L-shaped plate 21 with the convex block 23, and then pass the connecting screw 22 through the L-shaped plate 21 and thread it with the convex block 23, so that the air blower 15, the radiator 14, the heating resistor 10, and the water distribution pipe 25 can be installed in the pipe section 5 with a small number of connecting screws 22, which is beneficial to improving the disassembly and assembly efficiency. At the same time, the convex block 23 locally increases the wall thickness of the pipe section 5 for installing the connecting screw 22 without increasing the overall wall thickness of the pipe section 5, reducing the production material consumption of the pipe section 5.

[0042] During the withering process on the withering rack, place the withering rack directly on the weighing platform 28, record the self-weight of the withering rack just placed and the weight after placing the tea leaves. The gravity sensor detects the initial weight of the self-weight of the withering rack and the weight after placing the tea leaves, and then the gravity sensor transmits the initial weight value to the gravity induction receiving device 33. The gravity induction receiving device 33 can adopt a PLC controller. The gravity induction receiving device 33 controls the electronic display 31 to display the initial weight value. Put the weighing platform 28 and the withering rack together into the withering chamber 1 with the self-weight of the withering rack and the weight after placing the tea leaves. As the tea leaves wither, the weight of the tea leaves gradually decreases. At this time, the electronic display 31 records the weight during the withering process of the tea leaves at any time, so as to visually display the water loss situation and rate during the withering process of the tea leaves, improve the practicability and convenience of monitoring the water loss of the tea leaves, and more accurately detect the water loss situation of the tea leaves.

[0043] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Anyone familiar with this technology can make various modifications and decorations without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims

1. A tea processing environment air treatment and leaf water loss rate online monitoring device, comprising a withering chamber (1), characterized in that: One side of the withering chamber (1) is provided with an air supply pipe (6) which is in communication with the withering chamber (1); the other end of the air supply pipe (6) is provided with a pipe section (5); the pipe section (5) is provided with an air cooling component, an air heating component and an air humidifying component; the device adjusts the temperature and humidity in the withering chamber (1) through the components in the pipe section (5); the withering chamber (1) is also connected to the other end of the pipe section (5) through a return air pipe (20); and a weighing component for monitoring the water loss rate of the tea leaves is also provided under the withering rack in the withering chamber (1) for placing the tea leaves.

2. The device for online monitoring of air treatment and water loss rate of tea leaves in a tea processing environment according to claim 1, characterized in that: The weighing device comprises a weighing platform (28), a weighing frame (29), a gravity sensor and a corresponding gravity sensing receiving device (33); the weighing platform (28) is located on the weighing frame (29), and the gravity sensor is arranged below the weighing frame (29) to realize real-time weighing of the withering rack placed on the weighing platform (28) and the tea leaves placed thereon.

3. The device for online monitoring of air treatment and water loss rate of tea leaves in a tea processing environment according to claim 2, characterized in that: A fresh air valve (24) is installed at one end of the pipe section (5) away from the air supply pipe (6), and the opening and closing of the fresh air valve (24) realizes external circulation or internal circulation of the air in the withering chamber (1). A filter (16) for filtering debris is installed at one end of the pipe section (5) close to the fresh air valve (24). An air supply fan (15), an air cooling component, an air heating component and an air humidifying component are installed in sequence in the pipe section (5) in a direction away from the filter (16). The air supply fan (15), the air cooling component, the air heating component and the air humidifying component are connected to the pipe section (5) via a connecting piece. The withering chamber (1) is also provided with an exhaust pipe (18), which is connected to the air inlet end of the exhaust fan (19) via the exhaust pipe (18).

4. The device for online monitoring of air treatment and water loss rate of tea leaves in a tea processing environment according to claim 3, characterized in that: A temperature display (2), a humidity display (3) and an oxygen content display (4) are installed on one side of the withering chamber (1), and the three are respectively connected to the temperature sensor, the humidity sensor and the oxygen content sensor, and are used to display the temperature, humidity and oxygen content in the withering chamber in real time.

5. The device for air treatment in tea processing environment and online monitoring of water loss rate of tea leaves according to claim 4, characterized in that: The connecting member comprises a carrier plate (17), a strip-shaped opening is formed on the lower surface of the pipe section (5), and the carrier plate (17) is inserted into the strip-shaped opening; the air heating member adopts a heating resistor (10) to heat the air, the air blower (15) and the heating resistor (10) are both installed on the upper surface of the carrier plate (17), the water inlet pipe (13) and the water return pipe (27) in the air cooling member pass through the carrier plate (17), and the water delivery pipe (7) in the air humidifying member passes through the carrier plate (17); the carrier Both ends of the plate (17) are connected and fixed with an L-shaped plate (21), a protrusion (23) is provided between the horizontal portion of the L-shaped plate (21) and the pipe section (5), the protrusion (23) is connected and fixed to the pipe section (5), a gap exists between the protrusion (23) and the horizontal portion of the L-shaped plate (21), a small hole is provided on a side of the horizontal portion of the L-shaped plate (21) facing the protrusion (23), a connecting screw (22) is inserted into the small hole, and one end of the connecting screw (22) is threadedly connected to the protrusion (23).

6. The device for online monitoring of air treatment and water loss rate of tea leaves in a tea processing environment according to claim 5, characterized in that: The air cooling component comprises a cold water tank (11), the cold water tank (11) is arranged outside the pipe section (5), the cold water tank (11) is connected to the liquid inlet end of the circulation pump (12) through a connecting pipe, the liquid outlet end of the circulation pump (12) is provided with a water inlet pipe (13), one end of the water inlet pipe (13) passes through a carrier plate (17) and is connected to the water inlet end of a radiator (14), the radiator (14) is arranged in the pipe section (5), and the liquid outlet end of the radiator (14) is connected to the cold water tank (11) through a return pipe (27).

7. The device for online monitoring of air treatment and water loss rate of tea leaves in a tea processing environment according to claim 6, characterized in that: The air humidifying element comprises a water storage tank (9), the water storage tank (9) is arranged outside the pipe section (5), the water storage tank (9) is connected to the liquid inlet end of the water pump (8) through a connecting pipe, the liquid outlet end of the water pump (8) is installed with a water delivery pipe (7), the water delivery pipe (7) passes through the carrier plate (17), one end of the water delivery pipe (7) located inside the pipe section (5) is installed with a water distribution pipe (25), and a plurality of atomizing nozzles (26) are evenly installed on the outer surface of the water distribution pipe (25).

8. The device for online monitoring of air treatment and water loss rate of tea leaves in a tea processing environment according to claim 7, characterized in that: The outer peripheral surface of the carrier plate (17) is wrapped with a sealing frame adhered to the carrier plate (17), and the sealing frame is in contact with the inner wall of the strip-shaped opening.

9. The device for air treatment in tea processing environment and online monitoring of water loss rate of tea leaves according to claim 2, characterized in that: Gravity sensors are installed at the four corners of the lower surface of the weighing frame (29), and the gravity sensors are arranged on the base frame (34). The four gravity sensors are connected by wires, and the gravity sensing receiving device (33) is connected to the gravity sensor by wires. Force holes (36) are opened at the four corners of the upper surface of the base frame (34), and a force frame (32) is installed on the gravity sensor. The force frame (32) is inserted into the force hole (36). Blocking pieces (35) are installed at the four corners of the base frame (34). A display support seat (30) is installed in front of the base frame (34), and an electronic display (31) is installed on the upper end of the display support seat (30). The electronic display (31) is connected to the gravity sensing receiving device (33) by wires.

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