Adjustable mixed gas type traditional chinese medicine hot air drying device and method

Abstract

The application discloses a controllable mixed gas type traditional Chinese medicinal material hot air drying device and method, which comprises a drying chamber, a heating chamber, a dehumidification chamber, a mixed gas transmission and combustion chamber; a ventilation pipe C is installed between the drying chamber and the heating chamber, which is used for blowing the dry high-temperature air in the heating chamber into a supply air box and blowing out through an air outlet of the supply air box; the drying chamber and the dehumidification chamber are connected through a ventilation pipe B, and the humid hot air is transmitted into the dehumidification chamber; one side of the dehumidification chamber is connected with the heating chamber, a exhaust fan C is fixedly connected at the connecting position, which is used for sucking the dry air dehumidified by the dehumidification chamber into the heating chamber; the heating chamber is connected with the mixed gas transmission and combustion chamber through a ventilation pipe A, and an exhaust fan D is installed at the connecting position of the ventilation pipe A, which is used for sucking the mixed gas into the heating chamber. The application can make the medicinal material dry uniformly, control the temperature, fully utilize the heat, and introduce the required mixed gas for regulation and control, so that the quality of the medicinal material is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of traditional Chinese medicinal material drying, and particularly relates to a controllable mixed gas type traditional Chinese medicinal material hot air drying device and method. BACKGROUND

[0002] At present, traditional Chinese medicinal material drying is mostly in the form of hot air drying, which has low cost and large one-time drying capacity. Through investigation, it is found that most enterprises and growers in the field of southern medicinal materials still use traditional drying rooms for drying. Heat generated by burning fire is transferred to the room through the hot pipes arranged in the drying room. The fan rotating in the drying room performs wet heat transfer through air suction or air blowing, and drives the hot air in the room to flow to dry the traditional Chinese medicinal materials. In the drying process, the mixed gas generated by combustion is introduced into the drying room through the fan, and the dried medicinal materials have the aroma of fruit trees and good quality. However, this drying method relies on manual operation and cannot realize mechanization and intelligentization, and cannot accurately control the temperature and humidity, which is easy to cause uneven drying. Patent CN114322479A discloses a hot air internal circulation type traditional Chinese medicinal material drying equipment, which comprises a heating box, a air supply cabinet, a drying box, an air supply cylinder and a heat exchange box. The equipment uses the heat exchange box to transfer the heat remaining in the hot air after drying the medicinal materials to the newly entered gas through the preheating pipeline, so that the heat remaining in the hot air after drying the medicinal materials can be utilized. However, since the hot air after drying is not directly reused, the energy saving utilization rate is low. Patent CN217110328U discloses a bacteria low-temperature hot air circulation drying device, which comprises a main body, a drying assembly and a heat circulation assembly. The drying assembly is used to dry the materials, and the heat circulation assembly is used to form a circulation of the hot air in the device. However, the temperature of the drying equipment cannot be timely fed back and automatically adjusted. In addition, the above-mentioned patent can only realize ordinary drying, and does not have a controllable mixed gas device part. Therefore, it is an urgent problem to be solved in the field to develop a drying device which can make the medicinal materials dry evenly, the temperature controllable, the heat fully utilized, and the required controllable mixed gas introduced. SUMMARY

[0003] The present application aims to overcome the shortcomings in the prior art, and provides a controllable mixed gas type traditional Chinese medicinal material hot air drying device and method, which can make the medicinal materials dry evenly, the temperature controllable, the heat fully utilized, and the required controllable mixed gas introduced, thereby improving the quality of medicinal materials.

[0004] The object of the present application is achieved by the following technical solutions:

[0005] The utility model relates to a controllable mixed gas type traditional Chinese medicinal material hot -blast drying device, including drying chamber 1, heating chamber 4, dehumidification chamber 5, mixed gas transmission and combustion chamber 6, the inside installation of drying chamber 1 has the air supply box 10, and the air supply box 10 is equipped with the air outlet 11, and drying chamber 1 is installed with ventilation pipe C13 between heating chamber 4, and one end of ventilation pipe C13 is connected with the bottom of air supply box 10, and the other end of ventilation pipe C13 is connected with heating chamber 4, and the communication part of ventilation pipe C13 is installed with exhaust fan A12, is used for the dry high temperature air of blowing into air supply box 10 in heating chamber 4, and the air outlet 11 of air supply box 10 is blown out, and drying chamber 1 is communicated with dehumidification chamber 5 through ventilation pipe B8, and the wet hot air is transmitted to dehumidification chamber 5, and one side of dehumidification chamber 5 is communicated with heating chamber 4, and the communication is fixed with exhaust fan C34, is used to dry the dry air of extracting in dehumidification chamber 5 to heating chamber 4, and heating chamber 4 is communicated with mixed gas transmission and combustion chamber 6 through ventilation pipe A7, and the communication of ventilation pipe A7 is installed with exhaust fan D51, and mixed gas is extracted to heating chamber 4, and the flow sensor 27 is installed in heating chamber 4, and the flow sensor 27 detects flow signal and is fed back to touch screen and controller 2, and the controller sends instructions after signal processing, and the motor speed variation of exhaust fan D51 is controlled through control circuit device, to realize the flow of mixed gas entering heating chamber 4 control.

[0006] The outside of drying chamber 1 is hinged with drying chamber door 3, and touch screen and controller 2 are installed on drying chamber door 3, which is used to set relevant parameter values, and air supply box 10 is installed in the four corners of the inside of drying chamber 1, and the air supply side of air supply box 10 is provided with air outlet 11, and air supply box 10 is hinged with air deflector 9 on the air supply side, which is used to control the wind direction of air outlet 11. The wind direction of air outlet 11 is changed by the rotation of air deflector 9, so that the hot air blown out of the air outlet 11 at the four corners forms an imaginary circle inside the drying chamber 1, and this four-corner-cut-circle air outlet mode accelerates the air flow, making the temperature more uniform in the drying chamber.

[0007] The inside front and back surfaces of drying chamber 1 are fixed with guide rails 15, and drying screens 16 are placed on the guide rails 15, and limit blocks 14 are fixed on the guide rails 15, which are used to limit the position of drying screens 16.

[0008] The inner wall of dehumidification chamber 5 is fixed with a group of more than one slot B32, which is used to place one or more than one of water-absorbing asbestos and activated carbon to absorb water vapor and toxic substances.

[0009] The mixed gas transmission and combustion chamber 6 includes a mixed gas transmission chamber 37, a combustion chamber A 38 and a combustion chamber B 47; the side of the heating chamber 4 is connected with one end of the ventilation pipe A 7, the other end of the ventilation pipe A 7 passes through the upper part of the mixed gas transmission chamber 37 and is connected with the upper part of the reversing valve 35, a exhaust fan D 51 is installed at the connecting position, and the mixed gas is sucked into the heating chamber 4; the inside of the reversing valve 35 is provided with a partition A 52 and a partition B 50 for controlling the connection and closing of the passage, and the two ends of the reversing valve 35 are connected with the side walls of the combustion chamber A 38 and the combustion chamber B 47 respectively, and the combustion chamber A 38 and the combustion chamber B 47 are provided with combustible substances.

[0010] The combustion chamber A 38 and the combustion chamber B 47 are respectively provided with a combustion rack A 39 and a combustion rack B 46, the combustion rack A 39 and the combustion rack B 46 are used for placing combustion wood A 41 and combustion wood B 48, one end of an ignition device A 42 and an ignition device B 44 is respectively provided with a wax stick A 40 and a wax stick B 49, and is placed directly below the combustion wood A 41 and the combustion wood B 48, the other end of the ignition device A 42 and the ignition device B 44 is respectively installed outside the combustion chamber A 38 and the combustion chamber B 47, the ignition device A 42 and the ignition device B 44 can automatically ignite the wax stick A 40 and the wax stick B 49, and quickly ignite the combustion wood A 41 and the combustion wood B 48 through the rapid combustion of the wax stick A 40 and the wax stick B 49; the combustion chamber A 38 and the combustion chamber B 47 are respectively provided with a combustion chamber door 43, and the combustion chamber door 43 is provided with a ventilation opening 45, so that oxygen is supplemented during the combustion process to accelerate the combustion; the side of the combustion chamber A 38 close to the reversing valve 35 is provided with a smoke concentration sensor 36 for monitoring the smoke concentration in the combustion chamber A 38.

[0011] The inner wall of the heating chamber 4 is fixedly connected with a plurality of insertion grooves A 19, and the insertion grooves A 19 are provided with heating pipes 17; the inner wall of the heating chamber 4 is provided with an exhaust fan B 20 for blowing air to the heating pipes 17, so as to accelerate the temperature rise and fully mix the entering flue gas with hot air; the inside of the heating chamber 4 is provided with a temperature sensor 18 and a flow sensor 27 for respectively monitoring the temperature change and the mixed gas flow change in real time.

[0012] A controllable mixed gas type traditional Chinese medicine hot air drying method, comprising the following steps:

[0013] (1) placing the traditional Chinese medicine to be dried in the drying chamber 1, igniting the combustible substance in the mixed gas transmission and combustion chamber 6, the generated mixed gas is transported to the heating chamber 4 through the ventilation pipe A 7, the flow signal is detected by the flow sensor 27 and fed back to the touch screen and the controller 2, and the controller controls the flow of the mixed gas into the heating chamber 4 by controlling the rotating speed of the exhaust fan D 51;

[0014] (2) The heating pipe 17 inside the heating chamber 4 heats the air in the chamber; the temperature change curve parameters set on the touch screen and the controller 2 are input, the real-time temperature is detected by using the temperature sensor 18, the controller controls the resistance wire current of the heating pipe 17 according to the temperature difference, and the temperature control is realized;

[0015] (3) The exhaust fan A12 sends the heated mixed gas in the heating chamber 4 into the drying chamber 1 through the air outlet 11 of the air supply box 10, and the mixed gas dries the traditional Chinese medicinal materials;

[0016] (4) The controller controls the opening and closing of the exhaust fan C34, when the exhaust fan C34 is opened, the high-humidity hot air in the drying chamber 1 is sucked into the dehumidification chamber 5, the high-humidity hot air enters the heating chamber 4 after dehumidification and removal of toxic substances, and the internal circulation is achieved until the drying is completed.

[0017] Compared with the prior art, the application has the following advantages and effects

[0018] (1) The adjustable mixed gas type traditional Chinese medicinal material hot air drying device of the application uses a transmission pipe to make the hot air after drying the medicinal materials re-enter the drying chamber after dehumidification treatment in the dehumidification chamber, so that the heat of the device for drying medicinal materials is fully utilized, the time for heating the gas by the device is reduced, the cost of manufacturing heat by the device is saved, the economic benefit of using the device is improved, the hot air circulation period of the device for traditional Chinese medicinal material hot air circulation drying is shorter, and the speed of drying the traditional Chinese medicinal materials by the device is faster, and the efficiency of drying the traditional Chinese medicinal materials by the device is improved.

[0019] (2) The adjustable mixed gas type traditional Chinese medicinal material hot air drying device of the application is specially designed in the air supply box air outlet mode, the air direction is changed by using the air deflector, the hot air blown out of the four corner air outlets forms an imaginary circle inside the drying chamber, the air outlet mode of cutting the circle from the four corners accelerates the air flow, the temperature in the drying chamber is more uniform, the uniformity of drying the traditional Chinese medicinal materials by the device is improved, the hot air and the mixed gas can fully contact the traditional Chinese medicinal materials, and the efficiency of drying the traditional Chinese medicinal materials by the device is further improved, and the traditional Chinese medicinal materials can be dried more fully by using the drying screen for layered drying.

[0020] (3) The adjustable mixed gas type traditional Chinese medicinal material hot air drying device of the application is provided with a mixed gas generating device, the same combustion wood can be put into the two combustion chambers at the same time, or different combustion woods can be put into the two combustion chambers respectively, the drying requirements of different traditional Chinese medicinal materials are met, the flow of the mixed gas entering the heating chamber is controlled, the quality of the dried traditional Chinese medicinal materials is better, and the economic benefit is improved.

[0021] (4) The controllable mixed gas type traditional Chinese medicinal material hot air drying device, a fan is arranged in the heating chamber to drive the flow of the gas in the heating chamber, so that the heating speed of the gas in the heating chamber is faster and the heating is more uniform, and the air in the heating chamber and the mixed gas transmission and combustion chamber generated mixed gas are fully mixed and uniform, ensuring that the hot air heat and mixed gas entering the drying chamber are uniform, so that the device dries the traditional Chinese medicinal materials more uniformly, and the mixed gas and the traditional Chinese medicinal materials are more uniformly contacted, the quality of the traditional Chinese medicinal materials dried by the device is improved, the hot air in the heating chamber is introduced into the drying chamber by arranging the air supply box and the exhaust fan A, the flow rate of the hot air entering the drying chamber is improved, the drying effect of the hot air on the traditional Chinese medicinal materials is improved, and the efficiency of the device for drying the traditional Chinese medicinal materials is improved.

[0022] (5) The controllable mixed gas type traditional Chinese medicinal material hot air drying device realizes mechanization and intelligentization compared with traditional drying rooms, not only saves cost and improves energy utilization rate, but also improves the drying uniformity of traditional Chinese medicinal materials, realizes the control of the mixed gas amount entering the drying chamber, and makes the dried traditional Chinese medicinal materials better in quality. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole structure schematic diagram of the controllable mixed gas type traditional Chinese medicinal material hot air drying device.

[0024] Figure 2 It is a structure schematic diagram of the air supply box in the drying chamber.

[0025] Figure 3 It is a structure schematic diagram of the connection between the drying chamber and the heating chamber.

[0026] Figure 4 It is a structure schematic diagram of the drying chamber.

[0027] Figure 5 It is a structure schematic diagram of the heating chamber and the dehumidification chamber.

[0028] Figure 6 It is a structure schematic diagram of the mixed gas transmission and combustion chamber.

[0029] Figure 7 It is a structure schematic diagram of the reversing valve.

[0030] Wherein, 1, drying chamber; 2, touch screen and controller; 3, drying chamber door; 4, heating chamber; 5, dehumidification chamber; 6, mixed gas transmission and combustion chamber; 7, ventilation pipe A; 8, ventilation pipe B; 9, air deflector; 10, air supply box; 11, air outlet; 12, exhaust fan A; 13, ventilation pipe C; 14, limit block; 15, guide rail; 16, drying sieve; 17, heating pipe; 18, temperature sensor; 19, slot A; 20, exhaust fan B; 21, chain wheel A; 22, rotating shaft A; 23, rotating shaft B; 24, chain wheel B; 25, motor; 26, chain; 27, flow sensor; 28, chain wheel C; 29, rotating shaft C; 30, water absorption asbestos A; 31, activated carbon; 32, slot B; 33, water absorption asbestos B; 34, exhaust fan C; 35, reversing valve; 36, smoke concentration sensor; 37, mixed gas transmission chamber; 38, combustion chamber A; 39, combustion rack A; 40, wax wood strip A; 41, burning wood A; 42, ignition device A; 43, combustion chamber door; 44, ignition device B; 45, ventilation opening; 46, combustion rack B; 47, combustion chamber B; 48, burning wood B; 49, wax wood strip B; 50, partition B; 51, exhaust fan D; 52, partition A. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present application, the present application will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be pointed out that, for those skilled in the art, the present application can also be made with several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application.

[0032] Example 1

[0033] The adjustable mixed gas type traditional Chinese medicine material hot air drying device of the present embodiment comprises a drying chamber 1, a heating chamber 4, a dehumidification chamber 5 and a mixed gas transmission and combustion chamber 6. Figure 1 As shown in the figure, the drying chamber 1 is hingedly connected with a drying chamber door 3, and a touch screen and controller 2 is installed on the drying chamber door 3, so that the related parameter values can be set through the touch screen and controller 2.

[0034] As shown in the figure, Figure 2 and Figure 3As shown, the bottom of the air supply box 10 in the four corners of the drying chamber 1 is fixed to the bottom of the drying chamber 1, the ventilation pipe C13 is integrally installed between the drying chamber 1 and the heating chamber 4, the bottom of the air supply box 10 is communicated with one end of the ventilation pipe C13, the other end of the ventilation pipe C13 is communicated with the heating chamber 4, the exhaust fan A12 is installed at the communication position, the exhaust fan A12 blows the dry high-temperature air in the heating chamber 4 into the air supply box 10 through the ventilation pipe C13, and blows out through the air outlet 11, the air supply box 10 is hinged with the air deflector 9 on the air supply side, which is used to control the air direction of the air outlet 11, the air direction of the air outlet 11 is changed by rotating the air deflector 9, so that the hot air blown out of the air outlet 11 in the four corners forms an imaginary circle in the drying chamber 1, and the air outlet mode of cutting the circle from the four corners accelerates the air flow, so that the temperature in the drying chamber 1 is more uniform.

[0035] As shown in Figure 4 , the front and rear surfaces of the drying chamber 1 are welded with guide rails 15, which facilitates the placement and removal of the drying screen 16, the removable drying screen 16 facilitates the placement and removal of the material, and the limiting blocks 14 are welded on the guide rails 15 to limit the drying screen 16 to the specified position.

[0036] As shown in Figure 1 , Figure 5 , Figure 6 and Figure 7As shown, the top of the drying chamber 1 is communicated with one end of the ventilation pipe B8, the other end of the ventilation pipe B8 is communicated with the dehumidification chamber 5, the wet hot air is transported into the dehumidification chamber 5, three groups of insertion slots B32 are fixedly connected on the inner wall of the dehumidification chamber 5, the water absorption asbestos A30, the activated carbon 31 and the water absorption asbestos B33 are sequentially placed in the insertion slots B32, which are used to absorb water vapor and toxic substances. One side of the dehumidification chamber 5 is communicated with the heating chamber 4, the communication place is fixedly connected with the exhaust fan C34, the opening and closing of the exhaust fan C34 is controlled by inputting signals to the timer through the single-chip microcomputer, when the exhaust fan C34 is opened, the high humidity and heat air in the drying chamber 1 is sucked into the dehumidification chamber 5, after the dehumidification in the dehumidification chamber 5, the air enters the heating chamber 4, so that the gas in the whole device is circulated, and the drying efficiency is accelerated. The side of the heating chamber 4 close to the dehumidification chamber 5 is communicated with one end of the ventilation pipe A7, the other end of the ventilation pipe A7 is communicated with the upper part of the reversing valve 35 through the upper part of the mixed gas transmission chamber 37, the communication place is installed with the exhaust fan D51, the mixed gas is sucked into the heating chamber 4, the reversing valve 35 is internally provided with the partition plate A52 and the partition plate B50, which are used to control the communication and closing of the passage, the two ends of the reversing valve 35 are respectively communicated with the side wall of the combustion chamber A38 and the combustion chamber B47, the combustion rack A39 and the combustion rack B46 are respectively placed in the combustion chamber A38 and the combustion chamber B47, the combustion wood A41 and the combustion wood B48 are respectively placed on the combustion rack A39 and the combustion rack B46, one end of the ignition device A42 and the ignition device B44 is respectively placed with the wax stick A40 and the wax stick B49, and is placed directly below the combustion wood A41 and the combustion wood B48, the other end of the ignition device A42 and the ignition device B44 is respectively installed outside the combustion chamber A38 and the combustion chamber B47, the ignition device A42 and the ignition device B44 can automatically ignite the wax stick A40 and the wax stick B49, the wax stick A40 and the wax stick B49 are quickly burned, then the combustion wood A41 and the combustion wood B48 are quickly ignited, the combustion chamber door 43 is installed on the outside of the combustion chamber A38 and the combustion chamber B47, the ventilation opening 45 is opened on the combustion chamber door 43, so that oxygen is supplemented into the combustion process, and the combustion is accelerated. The smoke concentration sensor 36 is installed on the side surface of the combustion chamber A38 close to the reversing valve 35, which is used to monitor the smoke concentration of the combustion chamber A38; when the device is started, the ignition device A42 ignites the wax stick A40, the wax stick A40 quickly ignites the combustion wood A41, the generated mixed gas is transported into the heating chamber 4 through the ventilation pipe A7 by the reversing valve 35 with the partition plate A52 opened, after the flow signal is detected by the flow sensor 27, the signal is fed back to the touch screen and the controller 2, the controller processes the signal and sends instructions, the motor rotating speed of the exhaust fan D51 is controlled through the control circuit device, the rotating speed control of the exhaust fan D51 is realized, and then the flow of the mixed gas into the heating chamber 4 is controlled.When the smoke density sensor 36 monitors that the smoke density in the combustion chamber A 38 is lower than the set value, the ignition device B 44 of the combustion chamber B 47 ignites to ignite the wax stick B 49, the wax stick B 49 quickly ignites the burning wood B 48, and the generated mixed gas is transported to the heating chamber 4 through the ventilation pipe A 7 by the reversing valve 35 opening the partition B 50.

[0037] As shown in Figure 5 The inner wall of the heating chamber 4 is fixedly connected with three groups of insertion slots A 19, the heating pipes 17 are arranged in the insertion slots A 19, and the heating pipes 17 are used to heat the air in the device. The temperature change curve parameters set on the touch screen and the controller 2 are input, the real-time temperature is detected by using the temperature sensor 18, the temperature difference is controlled by the controller, the control instructions are output to the heating device, the resistance wire current of the heating device is driven to control the heating pipe 17, the temperature is adjusted, the temperature error is reduced and eliminated, and the temperature control is realized. The motor 25 is fixedly connected to the inner wall of the heating chamber 4 close to the dehumidification chamber 5. The motor 25 drives the rotating shaft B 23 to rotate. The sprocket B 24 is fixedly connected to the rotating shaft B 23. The chain 26 is sleeved on the sprocket B 24. The sprocket B 24 is driven to rotate by the rotating shaft B 23, and then the chain 26 is driven to rotate, so that the sprocket A 21 fixedly connected to the rotating shaft A 22 and the sprocket C 28 fixedly connected to the rotating shaft C 29 are driven to rotate, the rotating shaft A 22 and the rotating shaft C 29 are driven to rotate, and finally the three exhaust fans B 20 are driven to rotate. The exhaust fans B 20 blow air to the heating pipes 17, accelerate the air flow in the device, accelerate the temperature rise, fully mix the mixed gas and the hot air, make the air temperature and the mixed gas entering the drying chamber 1 more uniform, and make the air temperature and the mixed gas entering the drying chamber 1 more uniform.

[0038] When drying the tangerine, first open the combustion chamber door 43 of the combustion chamber A 38 and the combustion chamber B 47, place the combustion wood A 41 and the combustion wood B 48 on the combustion rack A 39 and the combustion rack B 46 respectively, then open the drying chamber 1 door, pull out the drying sieve 16 on the guide rail 15 in the drying chamber 1, place the tangerine to be dried on the drying sieve 16, then place the drying sieve 16 on the guide rail 15 in the drying chamber 1 until it hits the limiting block 14, then close the drying chamber door 3 and set the related parameters on the touch screen and the controller 2, and start the whole drying device. When the device is started, the ignition device A 42 ignites the wax stick A 40, the wax stick A 40 quickly ignites the combustion wood A 41, and the generated mixed gas is transported to the heating chamber 4 through the reversing valve 35 of the opening baffle A 52 through the ventilation pipe A 7. After the flow signal is detected by the flow sensor 27, it is fed back to the touch screen and the controller 2. The controller processes the signal and sends instructions to control the motor speed of the exhaust fan D 51 through the control circuit device to control the rotation speed of the exhaust fan D 51, thereby controlling the flow of mixed gas into the heating chamber 4. When the smoke concentration sensor 36 monitors that the smoke concentration in the combustion chamber A 38 is lower than the set value, the ignition device B 44 of the combustion chamber B 47 ignites the wax stick B 49, the wax stick B 49 quickly ignites the combustion wood B 48, and the generated mixed gas is transported to the heating chamber 4 through the reversing valve 35 of the opening baffle B 50 through the ventilation pipe A 7. When the device is started, the heating pipe 17 starts to work, heats the air in the heating chamber 4, and uses the real-time temperature detected by the temperature sensor 18 to automatically control the temperature according to the temperature difference, outputs control instructions to the heating device, drives the heating device to control the resistance wire current of the heating pipe 17, adjusts the temperature, reduces and eliminates temperature errors, makes the temperature change curve parameters meet the temperature change curve parameters set on the touch screen and the controller 2, and realizes the control of the temperature. The motor 25 drives the rotating shaft B 23 to rotate, the rotating shaft B 23 is fixedly connected with the sprocket B 24, the sprocket B 24 is sleeved with the chain 26, the sprocket B 24 is driven to rotate by the rotating shaft B 23, then drives the chain 26 to rotate, thereby drives the sprocket A 21 fixedly connected with the rotating shaft A 22 and the sprocket C 28 fixedly connected with the rotating shaft C 29 to rotate, makes the rotating shaft A 22 and the rotating shaft C 29 rotate, and finally makes the three exhaust fans B 20 rotate, blows the heating pipe 17, and uniformly distributes the heat generated by the heating pipe 17 to the heating chamber 4, so that the air heat and the mixed gas in the heating chamber 4 are uniformly distributed. The mixed gas heated by the heating chamber 4 is blown into the air supply box 10 through the ventilation pipe C 13 by the exhaust fan A 12, is blown out through the air outlet 11, the air deflector 9 rotates to change the direction of the air outlet 11, thereby making the hot air blown out by the air outlet 11 in the four corners form an imaginary circle in the drying chamber 1, accelerating the air flow, and making the temperature in the drying chamber 1 more uniform.The single-chip computer inputs signals to the timer to control the opening and closing of the exhaust fan C34. When the exhaust fan C34 is opened, the high-humidity and high-temperature air in the drying chamber 1 is drawn into the dehumidifying chamber 5 through the ventilation pipe B8, passes through the water-absorbing asbestos A30, a large amount of moisture is absorbed, then passes through the activated carbon 31 to absorb the toxic substances generated during the drying process, and finally passes through the water-absorbing asbestos B33 to be dehumidified again and enters the heating chamber 4, so that the gas in the entire device circulates and the drying efficiency is accelerated. Such a cycle is repeated to achieve internal circulation. After the drying process is completed, the drying chamber door 3 is opened, and the drying sieve 16 is extracted, and the drying is completed.

[0039] Example 2

[0040] The adjustable mixed gas type traditional Chinese medicine material hot air drying device of the embodiment, when drying spring amomum, first open the combustion chamber door 43 of the combustion chamber A38 and the combustion chamber B47, place the combustion wood A41 and the combustion wood B48 on the combustion rack A39 and the combustion rack B46 respectively, then open the drying chamber 1 door, pull out the drying sieve 16 on the guide rail 15 in the drying chamber 1, place the spring amomum to be dried on the drying sieve 16, then place the drying sieve 16 on the guide rail 15 in the drying chamber 1 until the limit block 14 is touched, then close the drying chamber door 3 and set the related parameters on the touch screen and the controller 2, start the whole drying device. When the device is started, the ignition device A42 ignites the wax stick A40, the wax stick A40 quickly ignites the combustion wood A41, the generated mixed gas is transported into the heating chamber 4 through the reversing valve 35 of the opening baffle A52 through the ventilation pipe A7, after the flow signal is detected by the flow sensor 27, the signal is fed back to the touch screen and the controller 2, the controller processes the signal and sends an instruction, controls the motor speed of the exhaust fan D51 through the control circuit device, controls the speed of the exhaust fan D51, so as to control the flow of the mixed gas into the heating chamber 4. When the smoke concentration sensor 36 monitors that the smoke concentration in the combustion chamber A38 is lower than the set value, the ignition device B44 of the combustion chamber B47 ignites the wax stick B49, the wax stick B49 quickly ignites the combustion wood B48, the generated mixed gas is transported into the heating chamber 4 through the reversing valve 35 of the opening baffle B50 through the ventilation pipe A7. When the device is started, the heating pipe 17 starts to work, heats the air in the heating chamber 4, detects the real-time temperature by using the temperature sensor 18, automatically controls according to the temperature difference, outputs the control instruction to the heating device, drives the heating device to control the resistance wire current size of the heating pipe 17, adjusts the temperature, reduces and eliminates the temperature error, makes the temperature change curve parameters meet the temperature change curve parameters set on the touch screen and the controller 2, realizes the control of the temperature. The motor 25 drives the rotating shaft B23 to rotate, the rotating shaft B23 is fixedly connected with the sprocket B24, the sprocket B24 is sleeved with the chain 26, the sprocket B24 is driven to rotate by the rotating shaft B23, then drives the chain 26 to rotate, thereby drives the sprocket A21 fixedly connected with the rotating shaft A22 and the sprocket C28 fixedly connected with the rotating shaft C29 to rotate, so that the rotating shaft A22 and the rotating shaft C29 rotate, finally make the three exhaust fans B20 rotate, blow the heating pipe 17, uniformly distribute the heat generated by the heating pipe 17 to the heating chamber 4, make the air heat and the mixed gas in the heating chamber 4 uniformly distributed, the mixed gas heated by the heating chamber 4 is blown into the air supply box 10 through the ventilation pipe C13 by the exhaust fan A12, is blown out through the air outlet 11, the air deflector 9 rotates to change the air direction of the air outlet 11, so that the hot air blown out by the air outlet 11 in the four corners forms an imaginary circle in the drying chamber 1, accelerates the air flow, makes the temperature in the drying chamber 1 more uniform.The single-chip machine inputs signals to the timer to control the opening and closing of the exhaust fan C34. When the exhaust fan C34 is opened, the high-humidity and high-temperature air in the drying chamber 1 is drawn into the dehumidifying chamber 5 through the ventilation pipe B8, passes through the water-absorbing asbestos A30, a large amount of moisture is absorbed, then passes through the activated carbon 31 to absorb the toxic substances generated in the drying process, and finally passes through the water-absorbing asbestos B33 to be dehumidified again and enters the heating chamber 4, so that the gas in the whole device circulates and the drying efficiency is accelerated. Such a cycle is repeated to achieve internal circulation. After the drying process is completed, the drying chamber door 3 is opened, the drying screen 16 is drawn out, and the drying is completed.

[0041] The above description is only an embodiment of the present application, but the implementation of the present application is not limited by the above embodiment, and any change, modification, replacement, combination, simplification, etc. made without departing from the spirit and principles of the present application are equivalent replacement methods and are included in the protection scope of the present application.

Claims

1. A controllable mixed gas hot air drying device for traditional Chinese medicinal materials, characterized in that: It includes a drying chamber, a heating chamber, a dehumidification chamber, a mixed gas transmission chamber, and a combustion chamber. An air supply box is installed inside the drying chamber, and the air supply box has an air outlet. A ventilation duct C is installed between the drying chamber and the heating chamber. One end of the ventilation duct C is connected to the bottom of the air supply box, and the other end is connected to the heating chamber. An exhaust fan A is installed at the connection point of the ventilation duct C to blow dry, high-temperature air from the heating chamber into the air supply box, which then blows it out through the air outlet. The drying chamber and the dehumidification chamber are connected via a ventilation duct B, which transfers humid, hot air into the dehumidification chamber. One side of the dehumidification chamber is connected to the heating chamber, and an exhaust fan C is fixed at the connection point to draw the dry air dehumidified in the dehumidification chamber into the heating chamber. The heating chamber is connected to the mixed gas transmission chamber and the combustion chamber via ventilation duct A. A ventilation duct A is connected to an exhaust fan D, which draws the mixed gas into the heating chamber. A flow sensor is installed in the heating chamber. The flow sensor detects the flow signal and sends it back to the touchscreen and controller. The controller processes the signal and issues a command to control the motor speed of the exhaust fan D, thereby controlling the flow rate of the mixed gas into the heating chamber. Air supply boxes are installed in the four corners of the drying chamber, with air outlets on their supply side. Air guide plates are hinged to the supply side of the air supply boxes to control the airflow direction at the outlets. The rotation of the air guide plates changes the airflow direction at the outlets, creating an imaginary circle of hot air from the four corner outlets inside the drying chamber. This tangentially shaped airflow accelerates air circulation. The heating chamber is equipped with temperature and flow sensors to monitor temperature and gas flow changes in real time, respectively. The gas transfer and combustion chamber includes a gas transfer chamber, combustion chamber A, and combustion chamber B. One end of the ventilation duct A is connected to the side of the heating chamber, and the other end of the ventilation duct A passes through the upper part of the gas transfer chamber and connects to the upper part of the reversing valve. An exhaust fan D is installed at the connection point to draw the gas mixture into the heating chamber. The reversing valve contains baffles A and B to control the opening and closing of the passage. Both ends of the reversing valve are connected to the side walls of combustion chambers A and B, respectively. Combustible materials are placed inside combustion chambers A and B. Combustion racks A are placed inside combustion chambers A and B, respectively. Combustion racks A and B are used to hold burning wood A and burning wood B. Ignition devices A and B each have a waxed wood strip A and waxed wood strip B placed at one end, directly below the burning wood A and burning wood B. The other ends of ignition devices A and B are installed outside combustion chambers A and B, respectively. Ignition devices A and B can automatically ignite waxed wood strips A and B, rapidly burning them to ignite the burning wood A and burning wood B. Combustion chambers A and B each have a combustion chamber door with ventilation openings on their outer sides. A smoke concentration sensor is installed on the side of combustion chamber A near the reversing valve to monitor the smoke concentration inside combustion chamber A.When the smoke concentration sensor detects that the smoke concentration in combustion chamber A is lower than the set value, the ignition device B in combustion chamber B ignites the waxed wood strip B. The waxed wood strip B quickly ignites the burning wood B, and the resulting gas mixture is delivered to the heating chamber through the ventilation pipe A via the reversing valve of the baffle B.

2. The adjustable mixed gas hot air drying device for Chinese medicinal materials according to claim 1, characterized in that: The drying chamber is hinged to the outside with a drying chamber door, and a touch screen and controller are installed on the drying chamber door.

3. The adjustable mixed gas hot air drying device for Chinese medicinal materials according to claim 1, characterized in that: The front and rear surfaces of the drying chamber are fixed with guide rails, and a drying screen is placed on the guide rails; limit blocks are fixed on the guide rails to limit the position of the drying screen.

4. The adjustable mixed gas hot air drying device for Chinese medicinal materials according to claim 1, characterized in that: The inner wall of the dehumidification chamber is fixed with one or more slots B, which are used to place one or more of water-absorbing asbestos and activated carbon to absorb moisture and toxic substances.

5. The adjustable mixed gas hot air drying device for Chinese medicinal materials according to claim 1, characterized in that: The inner wall of the heating chamber is fixed with one or more slots A, and the slots A are filled with heating tubes; an exhaust fan B is installed on the inner wall of the heating chamber to blow air onto the heating tubes, so as to accelerate the heating and fully mix the flue gas and hot air.

6. The adjustable mixed gas hot air drying device for Chinese medicinal materials according to claim 5, characterized in that: A motor is fixed to the inner wall of the heating chamber near the dehumidification chamber. The motor drives the rotating shaft B to rotate. A sprocket B is fixed to the rotating shaft B, and a chain is fitted on the sprocket B. The rotation of the rotating shaft B drives the sprocket B to rotate, which in turn drives the chain to rotate, thereby driving the sprocket A fixed to the rotating shaft A and the sprocket C fixed to the rotating shaft C to rotate. This rotation of the rotating shaft A and the rotating shaft C causes the three exhaust fans B to rotate, blowing air onto the heating tube and accelerating the airflow inside the device.

7. A method for drying Chinese medicinal herbs using adjustable mixed gas hot air, characterized in that: The adjustable mixed gas hot air drying device for Chinese medicinal materials according to any one of claims 1 to 6 includes the following steps: (1) Place the Chinese medicinal materials to be dried in the drying chamber, ignite the combustible material in the mixed gas transmission and combustion chamber, and the generated mixed gas is transported to the heating chamber through the ventilation pipe A. The flow signal is detected by the flow sensor and fed back to the touch screen and controller. The controller controls the flow rate of the mixed gas entering the heating chamber by controlling the speed of the exhaust fan D. (2) The heating tube inside the heating chamber heats the indoor air; the set temperature change curve parameters are input on the touch screen and controller, the real-time temperature is detected by the temperature sensor, and the controller controls the current of the heating tube resistance wire according to the temperature difference to achieve temperature control; (3) Exhaust fan A sends the heated mixed gas in the heating chamber into the drying chamber through the air outlet of the air supply box, and the mixed gas dries the Chinese medicinal materials; (4) The controller controls the opening and closing of the exhaust fan C. When the exhaust fan C is turned on, it draws the hot and humid air in the drying room into the dehumidification room. After the hot and humid air is dehumidified and toxic substances are removed, it enters the heating room to achieve internal circulation until the drying is finished.

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