CN114322479B - Chinese-medicinal material drying equipment of hot-blast internal recycle - Google Patents

Abstract

The invention relates to the technical field of drying Chinese herbal medicines, in particular to a drying equipment for Chinese herbal medicines with internal circulation of hot air, including a heating box, an air supply cabinet, a drying box, an air supply cylinder and a heat exchange box. box, so that the hot air after drying the medicinal materials transfers the retained heat to the gas newly entering the equipment through the preheating pipe, so that the residual heat of the hot air after the medicinal materials is dried by the equipment can be used, reducing energy loss and saving the equipment. The cost of producing heat, thereby improving the economic benefits of the equipment, at the same time, by using the residual heat of the hot air after drying the Chinese medicinal materials to preheat the newly entering gas, reducing the time for the equipment to heat the gas, making the equipment The hot air circulation cycle of the hot air circulation drying of Chinese medicinal materials is shorter, so that the equipment can dry Chinese medicinal materials faster.

Description

A kind of drying equipment for traditional Chinese medicinal materials with hot air internal circulation

technical field

The invention relates to the technical field of drying Chinese medicinal materials, in particular to a drying device for Chinese medicinal materials with internal circulation of hot air.

Background technique

During the transportation and storage of Chinese herbal medicines, in order to prevent mildew, drying equipment with hot air circulation is usually used to dry them, so as to reduce the moisture in the Chinese herbal medicines and avoid the moisture inside the Chinese herbal medicines from being stuffy during transportation and storage. Evaporate to the surface to cause mold growth, thereby avoiding the rotting of medicinal materials, thereby improving and ensuring the quality of Chinese medicinal materials.

The Chinese patent with the application number CN201811110204.5 discloses a drying device for Chinese herbal medicines, which includes a drying box. A plurality of oven lamps are installed on the bottom and sides of the drying box. There are two stages inside the drying box. The medicinal material conveying device, the medicinal material conveying device includes a medicinal material conveying belt, the upper part of the medicinal material conveying belt is provided with a cloth conveying belt, the cloth conveying belt is connected to the distributing device, the distributing device includes a telescopic cylinder, and the extension rod of the telescopic cylinder is vertically arranged, and the lower part of the extension rod is connected to the cloth rack , the lower part of the cloth rack is connected with a plurality of cloth teeth arranged in sequence, and a raw material box is arranged outside the drying box, and the raw material box is used to transport the medicinal materials to the first-level medicinal material conveyor belt through the feeding device, and the first-level medicinal material conveyor belt is set On the upper part of the second-stage medicinal material conveyor belt, the output end of the second-stage medicinal material conveyor belt is connected to the finished box body through the output end of the blanking guide plate. The present invention improves the efficiency of moisture volatilization in Chinese medicinal materials, so that the medicinal materials can be dried in all directions. The Chinese medicinal material drying device disclosed in this patent cannot be loaded with Chinese medicinal materials of different humidity for drying, so that the range of Chinese medicinal materials dried by the equipment is single. There is a problem that a variety of medicinal materials with different humidity cannot be dried at one time, and the residual heat of the hot air after drying is not utilized, which increases energy loss and increases the cost of heat production, thereby reducing the economic benefits of use. At the same time, there is no residual heat The heat preheats the gas, which increases the time of heating the gas, thereby reducing the efficiency of the equipment for drying Chinese herbal medicines.

However, the existing drying equipment has great defects in the use process. The existing drying equipment does not have a heat exchange box, and thus does not utilize the residual heat of the hot air after drying, thereby increasing energy loss and increasing the cost of producing heat. cost, thereby reducing the economic benefits of use, and at the same time, the residual heat is not used to preheat the gas, which increases the heating time of the gas, thereby reducing the efficiency of the equipment for drying Chinese medicinal materials. The existing drying equipment does not use the hot gas for a long time Good cycle, and the medicinal materials are not fully layered for drying, so that the medicinal materials are not dried uniformly, thereby reducing the quality of the dried Chinese medicinal materials. The existing drying equipment cannot be loaded with different humidity Chinese medicinal materials for drying, so that the The range of traditional Chinese medicinal materials dried by the equipment is single, and there is a problem that various medicinal materials with different humidity cannot be dried at one time.

Contents of the invention

Aiming at the problems in the prior art, the invention provides a drying equipment for Chinese herbal medicines with internal circulation of hot air.

The technical solution adopted by the present invention to solve the technical problem is: a kind of drying equipment for Chinese herbal medicines with internal circulation of hot air, including a heating box, an air supply cabinet, a drying box, an air supply tube and a heat exchange box, one of the air supply cabinets A blower is arranged on the side for blowing, the air supply cabinet is fixed on the top of the heating box, and the bottom of the air supply cabinet communicates with the top of the heating box, the drying box is fixed on the top of the air supply cabinet, and the drying box The bottom communicates with the top of the air supply cabinet, the heat exchange box is fixed on the top of the drying box, and the bottom of the heat exchange box communicates with the top of the drying box;

Wherein, the top of the heat exchange box is provided with an exhaust pipe port, one end of the heat exchange box is connected with an intake pipe, and a preheating pipe arranged in a folded spiral is arranged inside the heat exchange box, and one end of the preheating pipe is The other end of the preheating pipe is connected to the air supply pipe, and the end of the air supply pipe away from the preheating pipe is connected to the input port of the blower. The drying equipment uses a heat exchange box to make the dried medicinal materials The hot air transfers the retained heat to the gas newly entering the equipment through the preheating pipe, so that the residual heat of the hot air after the equipment dries the medicinal materials can be used, reducing energy loss, thereby saving the cost of the equipment for producing heat. At the same time, By using the residual heat of the hot air after drying the Chinese medicinal materials to preheat the newly entered gas, the time for the equipment to heat the gas is reduced, and the hot air circulation period of the equipment for the hot air circulation drying of the Chinese medicinal materials is shortened, thereby making the equipment The drying speed of Chinese medicinal materials is faster.

Preferably, the heating box is equipped with a wind guide rotating plate for rotation, and a motor is installed horizontally on one side of the heating box. The motor is connected to the wind guiding rotating plate through a rotating shaft. The rotating plate is driven by the motor to rotate the air guide rotating plate to drive the flow of gas in the heating box, so that the heating speed of the gas in the heating box is faster and the heating is more uniform, and then the heat of the hot air entering the drying box is ensured. Make the equipment more evenly dry Chinese herbal medicines.

Preferably, the air supply cabinet is a cabinet structure, one side of the air supply cabinet is provided with a detachable first side door for closing the air supply cabinet, and three first passages are provided at the connection between the bottom of the air supply cabinet and the heating box. holes, and exhaust fans are installed at the three first through holes on the inner wall of the bottom of the fume cabinet, a support partition is fixed horizontally in the middle of the fume cabinet, and three second passages corresponding to the positions of the three exhaust fans are opened on the support partition. holes, and the top of the support partition is obliquely welded with two air guide partitions, and the two air guide partitions are respectively located between two adjacent second through holes. The hot air is guided into the drying oven to increase the flow rate of the hot air entering the drying oven, thereby increasing the drying effect of the hot air on the Chinese medicinal materials.

Preferably, the drying box is a cabinet structure, one side of the drying box is provided with an openable second side door for closing the drying box, the bottom of the drying box is provided with three third through holes, and the drying box passes through the three third through holes. The hole communicates with the air supply cabinet.

Preferably, the inner walls at both ends of the drying box and the middle part are vertically fixed with hollow and directional air supply tubes, wherein the air supply tube in the middle of the drying box divides the drying box into two spaces, and the bottom of the three air supply tubes They are respectively connected with the three third through holes, and the three air supply tubes are located on one side of the inner wall of the drying box. A number of air blow holes are evenly spaced and a number of support bars are fixed at equal intervals. The side walls of the air supply cylinder are alternately arranged, and the two adjacent support bars on the opposite sides of the two adjacent air supply cylinders are placed with suction pans. By setting the suction pans, the Chinese herbal medicines are stored in layers in the drying box. , so that the hot air can fully contact the Chinese herbal medicines, and at the same time, the Chinese herbal medicines can be dried more fully by using the pumping tray to layer the Chinese herbal medicines.

Preferably, the side of the air supply tube close to the blowing hole is equidistantly threaded with several blocking frames, the blocking frame is in the shape of a "mouth", and several blocking plates matching the blowing holes are arranged in the blocking frame, and the air supply The end of the cylinder is equipped with a knob equal in number to the blocking frame and corresponding to the position. Block the blowing hole, so that the equipment can flexibly adjust the blowing size of the Chinese medicinal materials on each drawer, and then adjust the drying speed of each drawer, and cooperate with the air guide partition to make the hot air circulate in the drying box. At the same time, through The knob can be adjusted so that the equipment can be loaded with Chinese herbal medicines with different humidity for drying, so that the equipment can dry a wider range of Chinese herbal medicines.

Preferably, the bottom of the heat exchange box is provided with two air outlets corresponding to the two spaces of the drying box, and a first filter plate is arranged horizontally near the air outlet inside the heat exchange box, and the first filter plate is activated carbon adsorption and filtration. One end of the heat box close to the air intake pipe is provided with an air inlet, and one end of the preheating pipe in the heat exchange box is connected to one end of the air intake pipe through the air inlet, and one end of the heat exchange box near the air supply pipe is provided with an air outlet, and One end of the preheating pipe in the hot box passes through the air outlet and communicates with one end of the air supply pipe. By setting the first filter plate, the activated carbon in the first filter plate can filter the harmful gas in the hot air after drying the Chinese medicinal materials, thereby reducing the impact on the environment. pollution.

Preferably, a water collecting plate is fixed below the preheating pipeline and above the first filter plate in the heat exchange box, and the water collecting plate is welded by two long plates and short plates with different inclination angles, and the water collecting plate as a whole has the shape of " V"-shaped structure, one side of the heat exchange box is located above the lower end of the water collecting plate, and a drain is opened. By setting the water collecting plate, the water condensed on the outer wall of the preheating pipe during the heat exchange process can be collected and drained. At the same time, the water collecting plate can prevent the condensed water from dripping into the drying box.

Preferably, a second filter plate and a water-absorbing plate layer are respectively arranged in the air intake pipe, the second filter plate is a plate structure provided with fine mesh holes, and the water-absorbing plate layer is an adsorption layer equipped with activated alumina. The filter plate can filter the impurity particles in the outside air, avoiding the pollution of the Chinese herbal medicines by the impurity particles, and at the same time, preventing the impurity particles from causing damage to the inside of the equipment. Lower, which in turn can increase the speed of the equipment drying Chinese medicinal materials.

Preferably, the working method of the drying equipment specifically includes the following steps:

Step 1: Open the second side door, pull out the drawer from the drying oven, put the Chinese herbal medicines to be dried on the drawer, put the drawer containing the Chinese herbal medicines into the drying oven, and send the air to the heating box through the blower. Internal air supply, the gas is heated through the heating box, and the hot air is sent to the drying box through the exhaust fan in the air supply cabinet;

Step 2: The hot air is blown out through the blowing hole on the air supply tube, and the Chinese medicinal materials on each suction tray are blown and dried, and the hot air that heats and dries the Chinese medicinal materials carries the moisture in the Chinese medicinal materials and discharges them through the top of the drying box;

Step 3: The hot air discharged from the top of the drying box after drying the Chinese herbal medicine enters the heat exchange box, and preheats the new air in the preheating pipeline through the preheating pipe, and the preheated gas enters the air supply pipe through the preheating pipe , and is pumped into the heating box by the blower to form a hot air circulation for the Chinese medicinal materials to heat and dry.

Beneficial effects of the present invention:

(1) In the present invention, the drying equipment uses a heat exchange box to allow the hot air after drying the medicinal materials to transfer the retained heat to the gas newly entering the equipment through the preheating pipeline, so that the residual heat of the hot air after the medicinal materials is dried It can be used to reduce energy loss, thereby saving the cost of producing heat for the equipment, thereby improving the economic benefits of using the equipment, and at the same time, preheating the newly entered gas by using the residual heat of the hot air after drying the Chinese medicinal materials , reducing the time for the equipment to heat the gas, making the hot air circulation cycle of the equipment for the hot air circulation drying of the Chinese herbal medicines shorter, and then making the equipment dry the Chinese herbal medicines faster, thereby improving the efficiency of the equipment for drying the Chinese herbal medicines.

(2) In the present invention, by setting the pumping tray, the Chinese medicinal materials are stored in layers in the drying box, so that the hot air can fully contact the Chinese medicinal materials, thereby further improving the efficiency of drying the Chinese medicinal materials. The Chinese herbal medicines are layered by the plate, which can make the Chinese herbal medicines dry more fully. By setting the blocking frame in the air supply tube and driving the blocking frame through the knob, the blocking plate in the blocking frame can block the blowing hole, and then the The equipment can flexibly adjust the size of the blowing of Chinese herbal medicines on each drawer, and then adjust the drying speed of each drawer, and cooperate with the air guide partition to make the hot air circulate in the drying box, thereby further improving the drying uniformity of the equipment for Chinese herbal medicines , At the same time, through the adjustment of the knob, the equipment can be loaded with different humidity of Chinese herbal medicines for drying, so that the equipment can dry a wider range of Chinese herbal medicines, thus solving the problem that a variety of different humidity medicines cannot be dried at one time.

(3) In the present invention, by setting the wind guide rotating plate in the heating box, and driving the wind guiding rotating plate to rotate through the motor, the flow of gas in the heating box is driven, and the heating speed of the gas in the heating box is faster and the heating efficiency is improved. It is more uniform, which ensures that the heat of the hot air entering the drying box is even, and then makes the equipment dry the Chinese medicinal materials more evenly, thereby improving the quality of the Chinese medicinal materials dried by the equipment. By setting the air supply cabinet and the exhaust fan, the heating box The hot air in the oven is guided into the drying box to increase the flow rate of the hot air into the drying box, thereby increasing the drying effect of the hot air on the Chinese medicinal materials, thereby improving the drying efficiency of the equipment for Chinese medicinal materials.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the structure of the present invention without the first side door and the second side door as a whole.

Fig. 3 is a schematic diagram of the assembly structure of the wind deflector rotating plate and the motor of the present invention.

Fig. 4 is a sectional view of the blower cylinder of the present invention.

Fig. 5 is a schematic diagram of the assembly structure of the blocking frame and the blocking plate of the present invention.

Fig. 6 is a sectional view of the heat exchange box of the present invention.

Fig. 7 is a sectional view of the air intake pipe of the present invention.

In the figure: 1. Heating box; 2. Blower; 3. Motor; 301. Air guiding plate; 4. Air supply cabinet; 401. First side door; 402. Exhaust fan; 403. Supporting partition; 404. Air guiding partition board; 5, drying box; 501, second side door; 6, air supply tube; 601, blowing hole; 602, blocking frame; 6021, blocking plate; 603, knob; 604, support bar; 605, drawer; 7, Heat exchange box; 701, air outlet; 702, exhaust pipe port; 703, air inlet; 704, air outlet; 705, preheating pipe; 706, first filter plate; 707, water collecting plate; 708, drain ; 8, air intake pipe; 801, second filter plate; 802, water-absorbing plate layer; 9, air supply pipe.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

As shown in Fig. 1-Fig. 7, a kind of Chinese herbal medicine drying equipment with hot air internal circulation according to the present invention comprises a heating box 1, an air supply cabinet 4, a drying box 5, an air supply tube 6 and a heat exchange box 7. One side of the air cabinet 4 is provided with a blower 2 for blowing, the air supply cabinet 4 is fixed on the top of the heating box 1, and the bottom of the air supply cabinet 4 communicates with the top of the heating box 1, and the drying box 5 is fixed on the top of the air supply cabinet 4 , and the bottom of the drying box 5 communicates with the top of the air supply cabinet 4, the heat exchange box 7 is fixed on the top of the drying box 5, and the bottom of the heat exchange box 7 communicates with the top of the drying box 5;

Wherein, the top of the heat exchange box 7 is provided with an exhaust pipe port 702, and one end of the heat exchange box 7 is connected with an intake pipe 8, and the heat exchange box 7 is provided with a folded and spirally arranged preheating pipeline 705, and the preheating pipeline 705 One end communicates with the air inlet pipe 8, and the other end of the preheating pipe 705 is connected with the air supply pipe 9, and the end of the air supply pipe 9 away from the preheating pipe 705 is connected with the input port of the blower 2, and the drying equipment uses the heat exchange box 7 to make The hot air after drying the medicinal materials transfers the retained heat to the gas newly entering the equipment through the preheating pipe 705, so that the residual heat of the hot air after the medicinal materials is dried by the equipment can be used, reducing energy loss and saving the manufacturing heat of the equipment cost, thereby improving the economic benefits of the equipment, and at the same time, by using the residual heat of the hot air after drying the Chinese medicinal materials to preheat the newly entering gas, the time for the equipment to heat the gas is reduced, and the equipment is more effective for traditional Chinese medicine. The hot air circulation cycle of the material hot air circulation drying is shorter, so that the equipment can dry the Chinese medicinal materials faster, thereby improving the efficiency of the equipment to dry the Chinese medicinal materials.

In an optional implementation of the embodiment of the present invention, the heating box 1 is rotated and fitted with an air guide rotating plate 301, and a motor 3 is installed horizontally on one side of the heating box 1. The motor 3 is connected to the air guiding rotating plate 301 through a rotating shaft, and the heating box 1 A heating resistance wire is installed inside for heating. By setting the wind guide rotating plate 301 in the heating box 1 and driving the wind guiding rotating plate 301 to rotate through the motor 3, the flow of the gas in the heating box 1 is driven, and the gas in the heating box 1 is heated. The speed is faster and the heating is more uniform, thereby ensuring the uniform heat of the hot air entering the drying box 5, and then making the equipment dry the Chinese medicinal materials more uniformly, thereby improving the quality of the Chinese medicinal materials dried by the equipment.

In an optional implementation of the embodiment of the present invention, the air supply cabinet 4 is a cabinet structure, and one side of the air supply cabinet 4 is provided with a detachable first side door 401 for closing the air supply cabinet 4. There are three first through holes at the connection between the bottom of 4 and the heating box 1, and exhaust fans 402 are installed on the inner wall of the bottom of the air supply cabinet 4 at the three first through holes, and the middle part of the air supply cabinet 4 is horizontally fixed with a support partition 403 The support partition 403 is provided with three second through holes corresponding to the positions of the three exhaust fans 402, and the top of the support partition 403 is obliquely welded with two air guide partitions 404, and the two air guide partitions 404 are respectively located on the opposite sides. Between the adjacent two second through holes, by setting the air supply cabinet 4, and setting the exhaust fan 402, the hot blast in the heating box 1 is guided into the drying box 5, and the flow velocity of the hot blast entering the drying box 5 is improved, thereby increasing the hot blast to the drying box. The drying effect of Chinese herbal medicines, thereby improving the efficiency of the equipment for drying Chinese herbal medicines.

In an optional implementation of the embodiment of the present invention, the drying box 5 is a cabinet structure, one side of the drying box 5 is provided with an openable second side door 501 for closing the drying box 5, and the bottom of the drying box 5 is provided with three The drying box 5 communicates with the air supply cabinet 4 through the three third through holes.

In an optional implementation of the embodiment of the present invention, the inner walls and the middle part of the drying box 5 are vertically fixed with hollow and directional air supply tubes 6, wherein the air supply tube 6 located in the middle of the drying box 5 drives the drying box 5 is divided into two spaces, the bottoms of the three air supply tubes 6 communicate with the three third through holes respectively, and the three air supply tubes 6 are located on one side of the inner wall of the drying box 5 and are provided with a number of blowing holes 601 and the like at equal intervals. There are several support strips 604 at fixed intervals, and several support strips 604 and several rows of blowing holes 601 are arranged alternately on the side wall of the air supply cylinder 6, and the two adjacent support strips of the same height on the opposite sides of the two air supply cylinders 6 Suction pans 605 are placed on 604, by setting the suction pans 605, the Chinese herbal medicines are stored in layers in the drying box 5, so that the hot air can fully contact the Chinese herbal medicines, thereby further improving the efficiency of drying the Chinese herbal medicines of this equipment, and at the same time , by using the pumping pan 605 to layer the Chinese herbal medicines, the Chinese herbal medicines can be dried more fully.

In an optional implementation of the embodiment of the present invention, several blocking frames 602 are threaded at equal intervals on the side close to the blowing hole 601 inside the air supply cylinder 6, and the blocking frames 602 are in the shape of a "mouth". Several blocking plates 6021 matching the blowing holes 601 are provided, and the end of the blower cylinder 6 is equipped with knobs 603 equal in number and corresponding to the blocking frame 602, and the knob 603 is connected to one end of the blocking frame 602. A blocking frame 602 is set in the air supply cylinder 6, and the blocking frame 602 is driven by the knob 603, so that the blocking plate 6021 in the blocking frame 602 can block the blowing hole 601, so that the device can flexibly adjust the traditional Chinese medicine on each drawer 605 The size of the material blowing, and then adjust the drying speed of each drawer 605, cooperate with the air guide partition 404 to make the hot air circulate in the drying box 5, thereby further improving the uniformity of the equipment for drying Chinese medicinal materials. At the same time, through the knob 603 The adjustment enables the equipment to be loaded with Chinese herbal medicines of different humidity for drying, thereby making the equipment dry a wider range of Chinese herbal medicines, thereby solving the problem that a variety of different humidity medicines cannot be dried at one time.

In an optional implementation of the embodiment of the present invention, the bottom of the heat exchange box 7 is provided with two air outlets 701 corresponding to the two spaces of the drying box 5, and the inside of the heat exchange box 7 is horizontally arranged near the air outlets 701. A filter plate 706, the first filter plate 706 is an activated carbon adsorption filter, the heat exchange box 7 is provided with an air inlet 703 at one end close to the air intake pipe 8, and one end of the preheating pipe 705 in the heat exchange box 7 passes through the air inlet 703 Connected to one end of the air inlet pipe 8, the heat exchange box 7 is provided with an air outlet 704 near the end of the air supply pipe 9, and one end of the preheating pipe 705 in the heat exchange box 7 passes through the air outlet 704 and communicates with the end of the air supply pipe 9, through The first filter plate 706 is provided, and the activated carbon in the first filter plate 706 can filter the harmful gas in the hot air after drying the Chinese medicinal materials, thereby reducing the pollution to the environment, thereby improving the environmental protection of the equipment.

In an optional implementation of the embodiment of the present invention, a water collecting plate 707 is fixed below the preheating pipeline 705 and above the first filter plate 706 in the heat exchange box 7, and the water collecting plate 707 consists of two long plates with different inclination angles. It is welded with the short plate, and the water collecting plate 707 has a "V" shape structure as a whole. One side of the heat exchange box 7 is located above the lower end of the water collecting plate 707. A drain port 708 is opened. By setting the water collecting plate 707, The water condensed on the outer wall of the preheating pipe 705 during the heat exchange process can be collected and discharged in time through the drain 708. At the same time, the water collecting plate 707 can prevent the condensed water from dripping into the drying box 5, thereby making the drying equipment more reliable.

In an optional implementation of the embodiment of the present invention, the air inlet pipe 8 is respectively provided with a second filter plate 801 and a water-absorbing plate layer 802, the second filter plate 801 is a plate structure with fine mesh holes, and the water-absorbing plate layer 802 In order to install the adsorption layer of activated alumina, by setting the second filter plate 801, the impurity particles in the outside air can be filtered, so as to prevent the impurity particles from polluting the Chinese medicinal materials, and at the same time, prevent the impurity particles from causing damage to the inside of the equipment. By arranging the water-absorbing plate layer 802, the moisture content of the outside air entering the device is lower, thereby increasing the drying speed of the device for Chinese herbal medicines.

In an optional implementation manner of the embodiment of the present invention, the working method of the drying equipment specifically includes the following steps:

Step 1: Open the second side door 501, pull out the drawer 605 from the drying box 5, put the Chinese herbal medicines to be dried on the drawer 605, and then put the drawer 605 containing the Chinese herbal medicines into the drying box 5 , air is supplied to the heating box 1 by the blower 2, the gas is heated by the heating box 1, and hot air is delivered to the drying box 5 by the exhaust fan 402 in the air supply cabinet 4;

Step 2: The hot air is blown out through the blowing hole 601 on the air supply tube 6, and the Chinese medicinal materials on each suction plate 605 are blown and dried, and the hot air for heating and drying the Chinese medicinal materials carries the moisture in the Chinese medicinal materials and is discharged through the top of the drying box 5 ;

Step 3: The hot air discharged from the top of the drying box 5 after drying the Chinese medicinal materials enters the heat exchange box 7, and preheats the new air in the preheating pipeline 705 through the preheating pipeline 705, and the preheated gas passes through the preheating pipeline 705 enters the air supply pipe 9, and is sucked into the heating box 1 by the blower 2, and forms hot air circulation for heating and drying the Chinese herbal medicines.

When in use, first, open the second side door 501, extract the drawer 605 from the drying box 5, and place the Chinese herbal medicines that need to be dried on the drawer 605, and then put the drawer 605 with the Chinese herbal medicines into the drying oven. In the box 5, air is blown into the heating box 1 by the blower 2, the gas is heated by the heating box 1, and the hot air is delivered to the drying box 5 by the exhaust fan 402 in the air supply cabinet 4, and the air guide is set in the heating box 1. The wind rotating plate 301, and the motor 3 drives the wind guiding rotating plate 301 to rotate, driving the flow of the gas in the heating box 1, thereby making the heating speed of the gas in the heating box 1 faster and more uniform, and then ensuring that it enters the drying box 5 The heat of the hot air in the heating box is uniform, so that the equipment can dry the Chinese medicinal materials more evenly, thereby improving the quality of the Chinese medicinal materials dried by the equipment. Introduce in the drying box 5, improve the flow rate of the hot air entering the drying box 5, and then increase the drying effect of the hot air on the Chinese medicinal materials, thereby improving the efficiency of the equipment for drying the Chinese medicinal materials. Then, the hot air passes through the blowing holes 601 on the air supply cylinder 6 Blow out, the Chinese medicinal materials on each pumping pan 605 are blown and dried, and the hot air that heats and dries the Chinese medicinal materials carries the moisture in the Chinese medicinal materials and is discharged through the top of the drying box 5. The inner layers are stored so that the hot air can fully contact the Chinese herbal medicines, thereby further improving the efficiency of the equipment for drying Chinese herbal medicines. At the same time, the Chinese herbal medicines can be dried more fully by using the pumping pan 605 to layer the Chinese herbal medicines. A blocking frame 602 is set in the blower tube 6, and the blocking frame 602 is driven by the knob 603, so that the blocking plate 6021 in the blocking frame 602 can block the blowing hole 601, and then the device can be flexibly adjusted to each pumping plate 605. The size of the blowing of Chinese herbal medicines, and then adjust the drying speed of each drawer 605, and cooperate with the air guide partition 404 to make the hot air circulate in the drying box 5, thereby further improving the uniformity of the equipment for drying Chinese herbal medicines. At the same time, through the knob 603 By adjusting, the equipment can be loaded with Chinese herbal medicines with different humidity for drying, so that the range of Chinese herbal medicines that can be dried by the equipment is wider, thus solving the problem that various medicinal materials with different humidity cannot be dried at one time. Finally, from the drying box 5 The hot air discharged from the top after drying the Chinese herbal medicine enters the heat exchange box 7, and preheats the new air in the preheating pipe 705 through the preheating pipe 705, and the preheated gas enters the air supply pipe 9 through the preheating pipe 705, And it is sucked into the heating box 1 by the blower 2 to form a hot air circulation heating and drying for the Chinese medicinal materials. The drying equipment uses the heat exchange box 7 to make the hot air after drying the medicinal materials transfer the retained heat to the newly entering the medicinal material through the preheating pipeline 705. The gas of the equipment can make use of the remaining heat of the hot air after the equipment dries the medicinal materials, which reduces the energy loss, thereby saving the cost of the equipment to produce heat, thereby improving the economic benefits of the equipment. At the same time, by using the dried Chinese medicine The residual heat of the hot air behind the material preheats the newly entered gas, which reduces the time for the equipment to heat the gas, and makes the hot air circulation period of the equipment for the hot air circulation drying of the Chinese medicinal materials shorter, and then makes the equipment dry the Chinese medicinal materials. The speed is faster, thereby improving the efficiency of the equipment for drying Chinese herbal medicines.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also There are various changes and improvements, and these changes and improvements all fall within the scope of protection of the present invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a chinese-medicinal material drying equipment of hot-blast inner loop, includes heating cabinet (1), air supply cabinet (4), drying cabinet (5), air supply section of thick bamboo (6) and heat transfer case (7), its characterized in that: one side of the air supply cabinet (4) is provided with a blower (2) for blowing, the air supply cabinet (4) is fixed at the top of the heating box (1), the bottom of the air supply cabinet (4) is communicated with the top of the heating box (1), the drying box (5) is fixed at the top of the air supply cabinet (4), the bottom of the drying box (5) is communicated with the top of the air supply cabinet (4), the heat exchange box (7) is fixed at the top of the drying box (5), and the bottom of the heat exchange box (7) is communicated with the top of the drying box (5);

the top of the heat exchange box (7) is provided with an exhaust pipe orifice (702), one end of the heat exchange box (7) is connected with an air inlet pipe (8) in a penetrating way, a preheating pipeline (705) which is arranged in a folding spiral way is arranged in the heat exchange box (7), one end of the preheating pipeline (705) is communicated with the air inlet pipe (8), the other end of the preheating pipeline (705) is connected with an air supply pipe (9), and one end, far away from the preheating pipeline (705), of the air supply pipe (9) is connected with an input port of the air blower (2);

the air guide rotating plate (301) is rotationally matched with the heating box (1), the motor (3) is horizontally arranged on one side of the heating box (1), the motor (3) is connected with the air guide rotating plate (301) through the rotating shaft, and the heating box (1) is internally provided with the heating resistance wire for heating;

the air supply cabinet (4) is of a cabinet body structure, one side of the air supply cabinet (4) is provided with a detachable first side door (401) for sealing the air supply cabinet (4), three first through holes are formed in the joint of the bottom of the air supply cabinet (4) and the heating cabinet (1), exhaust fans (402) are arranged on the inner wall of the bottom of the air supply cabinet (4) and located at the three first through holes, a supporting partition plate (403) is horizontally fixed in the middle of the air supply cabinet (4), three second through holes corresponding to the three exhaust fans (402) respectively are formed in the supporting partition plate (403), two air guide partition plates (404) are obliquely welded at the top of the supporting partition plate (403), and the two air guide partition plates (404) are located between the two adjacent second through holes respectively;

the drying box (5) is of a cabinet structure, one side of the drying box (5) is provided with an openable second side door (501) for closing the drying box (5), three third through holes are formed in the bottom of the drying box (5), and the drying box (5) is communicated with the air supply cabinet (4) through the three third through holes;

the inner walls at two ends and the middle part of the drying box (5) are vertically fixed with hollow air supply cylinders (6) with a directional structure, wherein the air supply cylinders (6) positioned in the middle part of the drying box (5) divide the drying box (5) into two spaces, the bottoms of the three air supply cylinders (6) are respectively communicated with three third through holes, a plurality of rows of air blowing holes (601) are uniformly spaced on one side of the inner wall of the drying box (5) of the three air supply cylinders (6), a plurality of support bars (604) are uniformly spaced and fixed on one side of the inner wall of the drying box (5), the plurality of support bars (604) and the plurality of rows of air blowing holes (601) are alternately arranged on the side walls of the air supply cylinders (6), and a drawing disc (605) is arranged on the two support bars (604) which are uniformly high on the opposite sides of the two adjacent air supply cylinders (6);

a plurality of blocking frames (602) are arranged on one side, close to the blowing holes (601), of the inside of the air supply barrel (6) in an equidistant threaded mode, the blocking frames (602) are of a 'mouth' -shaped structure, a plurality of blocking plates (6021) matched with the blowing holes (601) are arranged in the blocking frames (602), knobs (603) corresponding to the blocking frames (602) in number and in positions are arranged at the end parts of the air supply barrel (6), and the knobs (603) are connected with one ends of the blocking frames (602).

2. The apparatus for drying chinese herbal medicine by internal circulation of hot air according to claim 1, wherein: two air outlets (701) corresponding to two spaces of the drying box (5) are formed in the bottom of the heat exchange box (7), a first filter plate (706) is horizontally arranged in the heat exchange box (7) close to the air outlets (701), the first filter plate (706) is used for adsorbing and filtering activated carbon, an air inlet (703) is formed in one end, close to the air inlet pipe (8), of the heat exchange box (7), one end, close to the air inlet pipe (8), of a preheating pipeline (705) penetrates through the air inlet (703) to be connected with one end of the air inlet pipe (8), an air outlet (704) is formed in one end, close to the air supply pipe (9), of the heat exchange box (7), and one end, close to the air inlet pipe (9), of the preheating pipeline (705) penetrates through the air outlet (704) to be communicated with one end of the air supply pipe (9).

3. The apparatus for drying chinese herbal medicine by internal circulation of hot air according to claim 2, wherein: the heat exchange box (7) is internally provided with a water collecting plate (707) below the preheating pipeline (705) and above the first filter plate (706), the water collecting plate (707) is formed by welding two long plates and short plates with different inclination angles, the whole water collecting plate (707) is of a V-shaped structure, and a water outlet (708) is formed in the position, above the lower end of the water collecting plate (707), of one side of the heat exchange box (7).

4. A hot air internal circulation type Chinese medicinal material drying apparatus according to claim 3, wherein: the air inlet pipe (8) is respectively provided with a second filter plate (801) and a water absorption plate layer (802), the second filter plate (801) is of a plate body structure with fine meshes, and the water absorption plate layer (802) is an adsorption layer filled with activated alumina.

5. The apparatus for drying chinese medicinal materials of claim 4 wherein: the working method of the drying equipment specifically comprises the following steps:

step one: opening a second side door (501), extracting a drawing disc (605) from a drying box (5), placing Chinese medicinal materials to be dried on the drawing disc (605), placing the drawing disc (605) filled with the Chinese medicinal materials into the drying box (5), blowing air into the heating box (1) through a blower (2), heating air through the heating box (1), and conveying hot air into the drying box (5) through an exhaust fan (402) in a blowing cabinet (4);

step two: the hot air is blown out through a blowing hole (601) on the air supply barrel (6), the traditional Chinese medicinal materials on each drawing disc (605) are dried by blowing, and the hot air for heating and drying the traditional Chinese medicinal materials carries moisture in the traditional Chinese medicinal materials and is discharged from the top of the drying box (5);

step three: hot air discharged from the top of the drying box (5) after drying the traditional Chinese medicinal materials enters the heat exchange box (7), new air entering the preheating pipeline (705) is preheated through the preheating pipeline (705), the preheated air enters the air supply pipe (9) through the preheating pipeline (705), and is pumped into the heating box (1) through the air blower (2), so that the traditional Chinese medicinal materials are heated and dried in a hot air circulation mode.

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