Tea dryer

Abstract

The utility model discloses a tea leaf drying machine, belongs to the technical field of tea leaf processing, and solves the problems that tea leaves often need to be spread to enlarge the contact area between the tea leaves and air so as to ensure that the tea leaves can be dried as soon as possible when a batch of tea leaves are dried at present, so that the tea leaves cannot be dried as soon as possible with the same spreading area. The problem that the amount of tea leaves capable of being dried is relatively poor is solved. Comprising a drying box, a heating box located above the drying box and communicated with the drying box, an air inlet pipe communicated with the heating box, and an air blower communicated with the air inlet pipe. During working, a user presses the button, the trigger circuit is connected with a power supply, a high-level signal is output, and the heating wire and the temperature sensor are started for heating. After the temperature reaches the standard, a timing circuit is started, a second trigger circuit outputs a signal, an air blower works, hot air is fed into the drying box, the tea leaves are dried, water is discharged, a filter screen prevents the tea leaves from losing, and efficient drying is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing, in particular to a tea drying machine. Background Art

[0002] Tea drying is a crucial step in tea processing, designed to reduce moisture content, prevent deterioration, and develop the tea's aroma and flavor. Drying involves two stages: primary drying and secondary drying. By controlling temperature and time, enzymes in the tea leaves are inactivated, preserving their green color while promoting internal chemical transformation. Various drying methods exist, including sun drying, charcoal drying, and mechanical drying, each with its own unique characteristics. Sun drying preserves the tea's natural aroma, while mechanical drying is efficient and controllable. Drying enhances the tea's color, aroma, and flavor, making it a key step in developing its unique flavor.

[0003] Currently, when drying tea leaves in batches, the tea leaves often need to be spread out to increase the contact area between the tea leaves and the air, thereby ensuring that the tea leaves can be dried as quickly as possible. However, in this way, the amount of tea leaves that can be dried for the same spreading area is relatively poor.

[0004] Therefore, a tea drying machine is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a tea drying machine.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A tea dryer comprises a drying box, a heating box located above the drying box and connected to the drying box, an air inlet pipe connected to the heating box, and a blower connected to the air inlet pipe. The top surface of the drying box is connected to an air outlet pipe, and a filter is embedded in the connection between the air outlet pipe and the drying box. A heating wire is provided in the heating box, and the blower starts working within a certain period of time after the heating wire is heated to a standard temperature.

[0008] Preferably, it further comprises a frame, the drying box is fixedly connected to the frame, an opening communicating with the interior of the drying box is provided on the front side of the drying box, and a drawer is slidably connected in the drying box and can be removed from the opening.

[0009] Preferably, it also includes an electric control circuit, which is coupled to the heating wire and the blower. The electric control circuit controls the heating wire to work and controls the blower to work within a certain period of time after the heating temperature of the heating wire reaches the standard temperature.

[0010] Preferably, the electric control circuit includes

[0011] A trigger circuit 1, wherein the input end of the trigger circuit 1 is connected to the power supply via a push button switch, and the trigger circuit 1 is triggered to feedback a first trigger signal after the push button switch is closed;

[0012] a switch circuit 1, wherein a controlled terminal of the switch circuit 1 is coupled to an output terminal of the trigger circuit 1, the heating wire is connected in series to a loop where the switch circuit 1 is located, and the switch circuit 1 controls the heating wire to be energized in response to a first trigger signal;

[0013] A temperature sensor is provided in the heating box and is connected in series with the heating wire. The temperature sensor collects the temperature in the heating box and feeds back a temperature signal.

[0014] a voltage comparison circuit, wherein an input terminal of the voltage comparison circuit is coupled to an output terminal of the temperature sensor, and the voltage comparison circuit outputs a comparison signal in response to the temperature signal being greater than a preset temperature reference signal;

[0015] a timing circuit, the input end of which is coupled to the output end of the voltage comparison circuit, the timing circuit timing in response to the comparison signal and outputting a timing signal within the timing time;

[0016] a second trigger circuit, an input terminal of which is coupled to the output terminal of the timing circuit, wherein the second trigger circuit feeds back a second trigger signal in response to the timing signal;

[0017] Switch circuit two, the controlled end of the switch circuit two is coupled to the output end of the trigger circuit two, the blower is connected in series to the loop where the switch circuit two is located, and the switch circuit two controls the blower to be powered on after responding to the second trigger signal.

[0018] Preferably, the trigger circuit 1 and the trigger circuit 2 both include RS triggers.

[0019] Preferably, the switching circuit 1 and the switching circuit 2 both include a triode switch, the base of the triode switch is a controlled end, and the collector and emitter of the triode switch form a power-connected loop.

[0020] Preferably, the voltage comparison circuit includes a voltage comparator, and the timing circuit includes a minimum system based on a 555 time base chip.

[0021] The utility model has the following beneficial effects:

[0022] When the utility model is in operation, the user presses a button, which triggers the circuit to connect to the power supply, outputting a high-level signal, activating the heating wire and the temperature sensor. When the temperature reaches the target, the timing circuit starts, triggering the circuit to output a signal, and the blower operates, sending hot air into the drying box, drying the tea leaves and draining the moisture. The filter prevents the tea leaves from being lost, achieving efficient drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a structural diagram of the utility model;

[0025] Figure 2 This is a structural block diagram of the electronic control circuit in this utility model.

[0026] 1. Frame; 2. Drying box; 3. Drawer; 4. Heating box; 5. Exhaust pipe; 6. Inlet pipe; 7. Blower; 8. Push button switch; 9. Trigger circuit 1; 10. Switch circuit 1; 11. Heating wire; 12. Temperature sensor; 13. Voltage comparator circuit; 14. Timing circuit; 15. Trigger circuit 2; 16. Switch circuit 2. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use, or are the orientation or position relationship commonly understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0032] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] A tea drying machine, such as Figure 1 As shown, it includes a frame 1, a drying box 2, a heating box 4 located above it and connected to the drying box 2, an air inlet pipe 6 connected to the heating box 4, and a blower 7 connected to the air inlet pipe 6. The drying box 2 is fixedly connected to the frame 1, and an opening connected to the interior of the drying box 2 is provided on the front side. A drawer 3 that can be slid away from the opening is connected to the drying box 2. An air outlet pipe 5 is connected to the top surface of the drying box 2, and a filter is embedded in the connection between the air outlet pipe 5 and the drying box 2. A heating wire 11 is provided in the heating box 4, and the blower 7 starts working within a certain time after the heating wire 11 is heated to the standard temperature.

[0034] The electric control circuit is also included. The electric control circuit is coupled to the heating wire 11 and the blower 7. The electric control circuit controls the heating wire 11 to work and controls the blower 7 to work within a certain period of time after the heating temperature of the heating wire 11 reaches the standard temperature.

[0035] like Figure 2As shown, the electronic control circuit includes a trigger circuit 1 9, a switch circuit 1 10, a temperature sensor 12, a voltage comparison circuit, a timing circuit 14, a trigger circuit 2 15, and a switch circuit 2 16. The trigger circuit 1 9 and the trigger circuit 2 15 both include RS triggers. The switch circuit 1 10 and the switch circuit 2 16 both include a triode switch. The base of the triode switch is a controlled terminal, and the collector and emitter of the triode switch form a circuit connected to electricity. The voltage comparison circuit 13 includes a voltage comparator. The timing circuit 14 includes a minimum system based on a 555 timer chip.

[0036] The input end of the trigger circuit 9 is connected to the power supply through the button switch 8. The trigger circuit 9 triggers and feeds back the first trigger signal after the button switch 8 is closed; the controlled end of the switch circuit 10 is coupled to the output end of the trigger circuit 9, and the heating wire 11 is connected in series to the loop where the switch circuit 10 is located. The switch circuit 10 controls the heating wire 11 to be energized after responding to the first trigger signal; the temperature sensor 12 is arranged in the heating box 4, and the temperature sensor 12 is connected in series with the heating wire 11. The temperature sensor 12 collects the temperature in the heating box 4 and feeds back the temperature signal; the input end of the voltage comparison circuit is coupled to the output end of the temperature sensor 12. The circuit 13 outputs a comparison signal in response to the temperature signal being greater than a preset temperature reference signal; the input end of the timing circuit 14 is coupled to the output end of the voltage comparison circuit 13, and the timing circuit 14 counts in response to the comparison signal and outputs a timing signal within the timing time; the input end of the trigger circuit 15 is coupled to the output end of the timing circuit 14, and the trigger circuit 15 feeds back a second trigger signal in response to the timing signal; the controlled end of the switch circuit 16 is coupled to the output end of the trigger circuit 15, and the blower 7 is connected in series to the loop where the switch circuit 16 is located. The switch circuit 16 controls the blower 7 to be powered on in response to the second trigger signal.

[0037] When the present invention actually needs to work, the user only needs to press the button switch 8, so that the input end of the trigger circuit 9 can be connected to the power supply, and then the input end of the trigger circuit 9 can obtain a high-level signal. After the signal is triggered, the trigger circuit 9 can feedback a first trigger signal to the controlled end of the switch circuit 10, so that the loop where the collector and emitter of the switch circuit 10 are located is turned on, so that the heating wire 11 can be energized and heated, so that the temperature in the heating box 4 begins to rise. At the same time, when the heating wire 11 is energized, the temperature sensor 12 can also be energized. The temperature sensor 12 will collect the temperature in the heating box 4 and feedback and output a temperature signal. After the temperature signal is given to the voltage comparison circuit 13, the voltage comparison circuit 13 compares the temperature signal with the preset temperature reference signal. When the temperature After the signal is greater than the temperature reference signal, a comparison signal is output. After the comparison signal is given to the timing circuit 14, the timing circuit 14 starts timing, and during the timing process, a timing signal is output to the trigger circuit 2 15. The trigger circuit 2 15 responds and outputs a second trigger signal to the controlled end of the switch circuit 2 16, so that the collector and emitter of the switch circuit 2 16 are turned on, and the circuit is turned on. At this time, the blower 7 is energized, and the blower 7 guides the air through the air inlet pipe 6 into the heating box 4, so that the hot air in the heating box 4 is blown into the drying box 2, and a large amount of tea in the drawer 3 in the drying box 2 is heated and dried. The air with moisture can leave through the air outlet pipe 5, and the filter can block the tea to prevent the tea from leaving the air outlet pipe 5. In this way, the drying can be completed without spreading the tea leaves, which can increase the drying amount of tea per unit area.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tea drying machine, characterized in that: The invention comprises a drying box (2), a heating box (4) located above the drying box (2) and connected to the drying box (2), an air inlet pipe (6) connected to the heating box (4), and a blower (7) connected to the air inlet pipe (6). The top surface of the drying box (2) is connected to an air outlet pipe (5), and a filter is embedded in the connection between the air outlet pipe (5) and the drying box (2). A heating wire (11) is provided in the heating box (4), and the blower (7) starts to work within a certain period of time after the heating wire (11) is heated to a standard temperature.

2. A tea drying machine according to claim 1, characterized in that: The drying box (2) is fixedly connected to the frame (1), the front of the drying box (2) is provided with an opening communicating with the interior thereof, and a drawer (3) is slidably connected to the drying box (2) and can be removed from the opening.

3. A tea drying machine according to claim 1, characterized in that: The device further comprises an electric control circuit, which is coupled to the heating wire (11) and the blower (7). The electric control circuit is controlled to operate the heating wire (11) and to control the blower (7) to operate within a certain period of time after the heating temperature of the heating wire (11) reaches a standard temperature.

4. A tea drying machine according to claim 3, characterized in that: The electronic control circuit includes A trigger circuit (9), wherein the input end of the trigger circuit (9) is connected to the power supply via a button switch (8), and the trigger circuit (9) triggers and feeds back a first trigger signal after the button switch (8) is closed; The switch circuit (10) has a controlled end coupled to an output end of the trigger circuit (9), and the heating wire (11) is connected in series to the loop where the switch circuit (10) is located. The switch circuit (10) controls the heating wire (11) in response to the first trigger signal. The hot wire (11) is energized; A temperature sensor (12), the temperature sensor (12) is arranged in the heating box (4), the temperature sensor (12) is connected in series with the heating wire (11), and the temperature sensor (12) collects the temperature in the heating box (4) and feeds back a temperature signal; a voltage comparison circuit (13), wherein an input end of the voltage comparison circuit (13) is coupled to an output end of the temperature sensor (12), and the voltage comparison circuit (13) outputs a comparison signal in response to the temperature signal being greater than a preset temperature reference signal; A timing circuit (14), an input end of which is coupled to an output end of the voltage comparison circuit (13), wherein the timing circuit (14) counts in response to a comparison signal and outputs a timing signal within a timing time; A second trigger circuit (15), whose input terminal is coupled to the output terminal of the timing circuit (14), wherein the second trigger circuit (15) feeds back a second trigger signal in response to the timing signal; The second switch circuit (16) has a controlled end coupled to the output end of the second trigger circuit (15), and the blower (7) is connected in series to the loop where the second switch circuit (16) is located. The second switch circuit (16) controls the blower (7) to be powered on in response to the second trigger signal.

5. A tea drying machine according to claim 4, characterized in that: The trigger circuit 1 (9) and the trigger circuit 2 (15) both include RS triggers.

6. A tea drying machine according to claim 4, characterized in that: The switch circuit 1 (10) and the switch circuit 2 (16) both include a transistor switch, the base of the transistor switch is a controlled end, and the collector and emitter of the transistor switch form a circuit connected to electricity.

7. The tea drying machine according to claim 4, characterized in that: The voltage comparison circuit (13) includes a voltage comparator, and the timing circuit (14) includes a minimum system based on a 555 time base chip.

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