A heat pump tobacco indoor dryer

Abstract

The application relates to the technical field of drying equipment, and provides a heat pump type tobacco indoor dryer, which comprises a base, a drying room main body, a partition plate and a heat pump assembly, the base is arranged at the bottom of the drying room main body, the partition plate is arranged in the drying room main body and divides the drying room main body into a first drying room and a second drying room, the heat pump assembly comprises an evaporator, a compressor and a condenser, the evaporator and the compressor are connected and both are arranged in the first drying room, the condenser is arranged at the top of the second drying room and is connected with the compressor, and the second drying room is used for drying tobacco; wherein one side of the first drying room is provided with a first iron wire mesh, the first iron wire mesh is close to the evaporator, and the first drying room is communicated with external air through the first iron wire mesh. The application has the effect of conveniently drying tobacco.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drying equipment, in particular to a heat pump type indoor tobacco dryer. BACKGROUND

[0002] Tobacco, as an important raw material for cigarettes, belongs to the Solanaceae genus plant, which is an annual or limited perennial herb. After harvesting, it needs to be dried by airing or baking to obtain finished products through subsequent processing. The tobacco dryer is a key equipment in the tobacco processing process, mainly used for drying the picked tobacco leaves to reduce the moisture content to an appropriate level for storage and subsequent processing (usually the moisture content is reduced to about 12%). The core principle is to realize efficient removal of water in tobacco leaves through the combined action of heat transfer and mass transfer (water evaporation and diffusion).

[0003] The existing heat pump dryer is based on the principle of reverse Carnot cycle (similar to air conditioning refrigeration principle, but opposite direction), which drives the compressor by consuming a small amount of electric energy to transfer heat from the air to the drying chamber, realizing low-temperature and high-efficiency drying of tobacco. The core process is as follows: 1. Evaporator heat absorption: low-temperature and low-pressure refrigerant (such as R22, R410A) absorbs heat from the outside air in the evaporator and evaporates into a gas state. 2. Compressor work: The gaseous refrigerant is compressed by the compressor and becomes a high-temperature and high-pressure gas, with the temperature rising to 50~90℃ (depending on the model). 3. Condenser heat release: The high-temperature and high-pressure refrigerant enters the condenser of the drying chamber to release heat to heat the air, and itself condenses into a liquid state. 4. Expansion valve pressure reduction: The liquid refrigerant passes through the expansion valve to reduce the pressure and reenters the evaporator to complete the cycle.

[0004] Most of the existing heat pump dryers on the market use air source heat pump systems, which absorb heat from the outside environment through heat pumps and transfer the heat to the materials that need to be heated. However, such equipment often needs to set up a machine room to accommodate the heat pump components, and the hot air needs to be delivered to the drying room through the air duct. This way increases the complexity and cost of the system, and also limits the effective use of heat energy, so it needs to be improved. SUMMARY

[0005] In order to facilitate the drying of tobacco and improve the drying efficiency and economic benefits, the present application provides a heat pump type indoor tobacco dryer.

[0006] The heat pump type indoor tobacco dryer provided by the present application uses the following technical scheme:

[0007] The application discloses a heat pump type tobacco indoor dryer, which comprises a base, a drying room main body, a partition plate and a heat pump assembly, the base is arranged at the bottom of the drying room main body, the partition plate is arranged in the drying room main body and separates the drying room main body into a first drying room and a second drying room, the heat pump assembly comprises an evaporator, a compressor and a condenser, the evaporator and the compressor are connected and arranged in the first drying room, the condenser is arranged at the top of the second drying room and connected with the compressor, and the second drying room is used for drying tobacco.

[0008] The first drying room is provided with a first iron wire mesh on one side, the first iron wire mesh is close to the evaporator, and the first drying room is communicated with external air through the first iron wire mesh.

[0009] According to the technical scheme, the partition plate separates the drying room main body into the first drying room and the second drying room, when the tobacco needs to be dried, the tobacco to be dried is placed in the second drying room, then the evaporator is started, the low-temperature and low-pressure refrigerant absorbs heat in external air in the evaporator and is evaporated into a gaseous state, the gaseous refrigerant is compressed by the compressor and becomes high-temperature and high-pressure gas, then the high-temperature and high-pressure refrigerant enters the condenser in the second drying room, releases heat to heat air and is condensed into a liquid state, and the heat released by the condenser heats the air in the second drying room, thereby realizing drying of the tobacco.

[0010] The heat pump for drying is directly arranged in the interior of the drying room main body and exchanges heat with the outside through the window of the first iron wire mesh, so that heat loss in the heat transfer process is reduced and heat efficiency is improved, the inverse Carnot cycle is used to extract heat from the surrounding air, and the heat is used to preheat the tobacco sheets to be dried.

[0011] Preferably, the inner walls of the first drying room and the second drying room are both provided with heat insulation layers made of heat insulation materials.

[0012] According to the technical scheme, the heat insulation layer is usually made of materials with low thermal conductivity (such as rock wool, polyurethane foam, aluminum silicate fiber and the like), can effectively block heat conduction, heat convection and heat radiation between the high temperature in the drying room and the low temperature outside, and realizes the effect of improving the drying of the tobacco sheets.

[0013] Preferably, the heat pump assembly further comprises a fan, a first mounting hole is arranged through the side wall of the first drying room, the fan is arranged on the first mounting hole, the fan is connected with the heat pump assembly and is used for air supply and cooling of the second drying room.

[0014] The second iron wire mesh is arranged through the second mounting hole in the side wall of the second drying room.

[0015] By adopting the technical scheme, the heat pump refrigeration air supply is a process that the heat pump system cools the ambient air to a set temperature (e.g. 15-25℃), and then the fan delivers the cooled air to the cooling area. The core is to use the reverse Carnot cycle principle to realize heat transfer through phase change (gas state→liquid state→gas state) of the refrigerant, so as to achieve the purpose of cooling.

[0016] The low-temperature and low-pressure gaseous refrigerant is sucked by the compressor, and becomes high-temperature and high-pressure gas state after compression. The high-temperature and high-pressure gaseous refrigerant enters the condenser, releases heat to the second drying room, and is condensed into high-temperature and high-pressure liquid state. The high-temperature and high-pressure liquid refrigerant is suddenly decompressed by the expansion valve (throttling element), expands in volume, and becomes low-temperature and low-pressure gas-liquid mixed state.

[0017] The low-temperature and low-pressure refrigerant enters the evaporator, and the ambient air (or circulating air) flows through the surface of the evaporator driven by the fan. The heat in the air is absorbed by the refrigerant. After absorbing heat, the refrigerant evaporates into low-temperature and low-pressure gas state, re-enters the compressor, and completes the cycle. The cooled air is pressurized by the fan, delivered to the second drying room through the air supply pipeline or nozzle distribution system, and exchanges heat with the high-temperature tobacco by convection, achieving cooling. The air with lower temperature naturally sinks, causing the hot air in the second drying room to escape from the second wire mesh to the atmosphere.

[0018] Due to the design of the traditional heat pump dryer, the heat pump device is separated from the drying room, causing energy transmission loss. At the same time, since the cooling process directly uses untreated ambient air, the cooling effect of the tobacco sheet is unstable, especially in the case of large temperature fluctuations, it is difficult to maintain ideal cooling conditions. The design of the fan in this application enables the entire system to achieve continuous drying and cooling operation with less energy consumption, solving the problem of unstable cooling effect caused by changes in ambient temperature.

[0019] Preferably, it further comprises a material door and a clamping plate, the material door is arranged on the second drying room and is used for the trolley carrying tobacco to enter and exit the second drying room, and the clamping plate is rotatably connected to the second drying room and located at the lower end of the material door, and the clamping plate is arranged in a direction away from the second drying room and is used for moving the trolley from the ground to the second drying room.

[0020] By adopting the technical scheme, before drying, the trolley carrying tobacco needs to be sent into the second drying room. Since there is a certain height between the second drying room and the ground, the material door can be opened first, and then the trolley is pushed upwards along the clamping plate into the second drying room.

[0021] Preferably, it further comprises an observation window, the observation window is arranged on the material door and is made of transparent material.

[0022] By adopting the above technical scheme, during the drying process, the staff can see the inside condition of the second drying room through the observation window without opening the material door.

[0023] Preferably, a linkage assembly is further included, which is connected with the material door and the flap simultaneously, and the flap is attached to the material door when the material door is in a closed state.

[0024] The linkage assembly includes a pull rope, a fixed pulley, a winding wheel, a connecting shaft, a driving motor, a first bevel gear and a second bevel gear. The fixed pulley is rotatably connected to the top end of the second drying room, and the winding wheel is rotatably connected to the second drying room and close to the base. The pull rope passes through the fixed pulley, one end of the pull rope is connected with the upper end of the material door, and the other end of the pull rope is wound on the winding wheel.

[0025] The connecting shaft is coaxially arranged with the winding wheel, the driving motor is connected with the connecting shaft and is used for controlling the rotation of the winding wheel, and the driving motor has a self-locking function.

[0026] The first bevel gear is coaxially arranged on the connecting shaft, and the second bevel gear is arranged on the rotating shaft of the flap and is engaged with the first bevel gear. When the driving motor drives the winding wheel to rotate, the pull rope is wound on the winding wheel, so that the material door moves vertically upward. The first bevel gear drives the second bevel gear to rotate, so that the flap rotates in the direction close to the ground.

[0027] By adopting the above technical scheme, when the material door is in a closed state, the flap abuts against the material door, so that the flap can be avoided to be placed on the ground and the floor area is reduced. When the driving motor drives the winding wheel to rotate, the pull rope is wound on the winding wheel and generates a vertical upward tension on the material door, so that the material door is opened.

[0028] The rotation of the connecting shaft also drives the first bevel gear to rotate. Since the second bevel gear and the first bevel gear are engaged with each other, the rotation of the rotating shaft of the flap is driven, so that the flap rotates in the direction away from the second drying room. When the material door is completely opened, the flap is just lapped on the ground, so that the storage rack in the second drying room is moved out.

[0029] Preferably, a storage rack is further included, which includes a rack body and a storage plate. The bottom of the rack body is connected with a plurality of rollers, the storage plate is horizontally arranged and is used for placing tobacco, and the storage plate is spaced apart along the height direction of the rack body.

[0030] By adopting the above technical scheme, the rollers facilitate the movement of the rack body, and the storage plate is used for placing the tobacco to be dried.

[0031] Preferably, the placing plate comprises a first support plate and a second support plate, the first support plate comprises a first plate and a second plate, the first plate is fixedly connected to the frame body, and the second plate is rotatably connected to the first plate close to one side of the second support plate, and the second plate is rotated by means of a gas spring.

[0032] The second support plate is arranged on the frame body by means of a gas cylinder, the second support plate comprises a third plate and a fourth plate, the third plate is connected with a piston rod of the gas cylinder, the fourth plate is rotatably connected to the third plate close to one side of the first support plate, the rotation shafts of the fourth plate and the second plate are parallel, and the second plate and the fourth plate are both used for placing tobacco, and the circumferential sides of the second plate and the fourth plate are both provided with baffles.

[0033] By adopting the above technical scheme, in the drying process of traditional tobacco, the position of the tobacco is generally fixed, and the drying effect is not good. By setting the placing plate as the first support plate and the second support plate, the tobacco can be placed on the second plate and the fourth plate.

[0034] In the initial state, the second plate and the fourth plate are both horizontally arranged, the tobacco is stably placed on the second plate and the fourth plate, and the second plate and the fourth plate are in the same horizontal plane. When it is needed to change the state of the tobacco, first, the second support plate is controlled to move upward by means of the gas cylinder, so that the plane where the fourth plate is located is higher than the plane where the second plate is located, and then the fourth plate is controlled to rotate by means of the gas spring, and the tobacco on the fourth plate will fall onto the second plate under the action of gravity.

[0035] Then, the second support plate is controlled to move downward again by means of the gas cylinder, so that the plane where the fourth plate is located is lower than the plane where the second plate is located. Then, the second plate is controlled to rotate by means of the gas spring, and the tobacco on the second plate will fall onto the fourth plate under the action of gravity. The above operation is repeated, the state of the tobacco is changed, and the drying effect of the tobacco is improved.

[0036] Preferably, the collecting box is further provided, the collecting box is provided with an opening and is located at the bottom of the frame body, and the collecting box is used for receiving the tobacco on the placing plate.

[0037] By adopting the above technical scheme, the collecting box can receive the tobacco on the placing plate which is dried and cooled, and the collection is completed. The tobacco on the second plate falls onto the fourth plate, and then the tobacco on the fourth plate falls into the collecting box.

[0038] Preferably, the electric heating pipes are further provided, the electric heating pipes are parallel and are located in the second drying room, each electric heating pipe is close to the condenser, and the electric heating pipes are used for assisting the drying of the tobacco.

[0039] By adopting the above technical scheme, the electric heating pipe can generate heat after being electrified, plays an auxiliary heating role, and cooperates with the heat released by the condenser to dry the tobacco, thereby improving the drying effect.

[0040] In summary, the present application has at least one of the following beneficial technical effects:

[0041] (1) By arranging the base, the drying room main body, the partition plate and the heat pump assembly, the drying room main body is divided into the first drying room and the second drying room. When the tobacco needs to be dried, the tobacco to be dried is first placed in the second drying room, and then the heat pump assembly is used to heat the second drying room. The heat pump for drying is directly installed in the interior of the drying room main body, and heat exchange with the outside is carried out through the window of the first iron wire mesh. This reduces the loss in the heat transfer process and improves the thermal efficiency.

[0042] (2) By arranging the connecting plate, the material door is first opened before drying, and then the material rack containing the tobacco is sent into the second drying room along the connecting plate. The connecting plate can play an auxiliary role.

[0043] (3) By arranging the electric heating pipe, the electric heating pipe can generate heat after being electrified, plays an auxiliary heating role, and cooperates with the heat released by the condenser to dry the tobacco, thereby improving the tobacco drying effect. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a structural schematic view of a drying machine in an embodiment of the present application;

[0045] Figure 2 is a structural schematic view of the drying machine from another perspective in an embodiment of the present application;

[0046] Figure 3 is a structural schematic view of a drying machine in another embodiment of the present application;

[0047] Figure 4 is a structural schematic view of the drying machine from another perspective in another embodiment of the present application;

[0048] Figure 5 is an enlarged schematic view of part A in the present application; Figure 4

[0049] Figure 6 is a structural schematic view of a material rack in another embodiment of the present application.

[0050] ​Label: 1, base; 2, drying room main body; 21, first drying room; 22, second drying room; 3, partition plate; 4, heat pump assembly; 41, evaporator; 42, compressor; 43, condenser; 5, first wire mesh; 6, fan; 7, second wire mesh; 8, electric heating pipe; 9, material door; 10, batten; 11, observation window; 12, linkage assembly; 121, pull rope; 122, fixed pulley; 123, winding wheel; 124, connecting shaft; 125, driving motor; 126, first bevel gear; 127, second bevel gear; 13, shelf; 131, shelf body; 132, shelf plate; 14, first support plate; 141, first plate; 142, second plate; 15, second support plate; 151, third plate; 152, fourth plate; 16, baffle; 17, roller; 18, air cylinder. DETAILED DESCRIPTION

[0051] The technical solutions of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application. The present application can be embodied in various different forms, and is not limited to the embodiments described here.

[0052] In the description of the present application, the expressions of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics represented can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the terms "include" and "have" and any variations thereof used in the specification and claims of this application and the above description of the drawings are intended to cover the inclusion not the exclusion of one or more elements.

[0054] In the description of the embodiments of the present application, unless otherwise explicitly defined and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected; it can also be detachably connected; or it can be integrated; or it can be mechanically connected. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0055] Some embodiments of the present application will be described in detail with reference to the drawings. Those skilled in the art will appreciate that the different embodiments or examples presented in this application and the features of the different embodiments or examples can be combined and combined without conflict.

[0056] The embodiments of the present application disclose a heat pump type tobacco indoor dryer. Referring to Figure 1 and Figure 2 , the dryer comprises a base 1, a drying room main body 2, a partition plate 3 and a heat pump assembly 4. The base 1 is fixedly installed on the ground, and the drying room main body 2 is fixed on the base 1. The partition plate 3 is fixedly connected in the interior of the drying room main body 2, is arranged along the height direction of the drying room main body 2, and divides the drying room main body 2 into a first drying room 21 and a second drying room 22. The heat pump assembly 4 comprises an evaporator 41, a compressor 42 and a condenser 43, the evaporator 41 and the compressor 42 are connected and both are installed in the first drying room 21, the condenser 43 is installed on the top of the second drying room 22 and is connected with the compressor 42, and the second drying room 22 is used for drying tobacco. The first drying room 21 is fixedly connected with a first wire mesh 5 on one side, the first wire mesh 5 is close to the evaporator 41 and the compressor 42, and the first drying room 21 is communicated with external air through the first wire mesh 5.

[0057] When it is needed to dry tobacco, the tobacco to be dried is placed in the second drying room 22 first, and then the evaporator 41 is started. The low-temperature and low-pressure refrigerant absorbs heat in the external air in the evaporator 41 and evaporates into a gaseous state. The gaseous refrigerant is compressed by the compressor 42 and becomes high-temperature and high-pressure gas; then the high-temperature and high-pressure refrigerant enters the condenser 43 in the second drying room 22, releases heat to heat air, and itself condenses into a liquid state. The heat released by the condenser 43 heats the air in the second drying room 22, thereby realizing drying of the tobacco.

[0058] The heat pump used for drying is directly installed in the interior of the drying room main body 2 and exchanges heat with the outside through the window of the first wire mesh 5. This has the advantage of reducing the loss in the process of heat transmission and improving the heat efficiency. The reverse Carnot cycle is used to extract heat from the surrounding air, and the heat is then used to preheat the tobacco to be dried.

[0059] Specifically, the inner walls of the first drying room 21 and the second drying room 22 are provided with a heat preservation layer made of a heat insulation material, such as rock wool, polyurethane foam, aluminum silicate fiber, and the like, which has a low thermal conductivity and can effectively block the heat conduction, heat convection and heat radiation between the high temperature inside the drying room and the low temperature outside, thereby improving the drying effect of the tobacco sheets. The first drying room 21 is further provided with two fans 6. The first drying room 21 is provided with a first mounting hole penetrating through the side wall, and the fan 6 is fixedly installed in the first mounting hole. The fan 6 is connected with the heat pump assembly 4 and is used for air cooling of the second drying room 22. The second drying room 22 is provided with a second mounting hole penetrating through the side wall, and the second mounting hole is fixedly connected with a second iron mesh 7. The second drying room 22 is in communication with the outside air through the second iron mesh 7. The heat pump refrigeration air supply is a process of cooling the ambient air to a set temperature (such as 15-25℃) by the heat pump system and then delivering the air to the cooling area by the fan 6. The core is to use the reverse Carnot cycle principle to realize the transfer of heat through the phase change (gaseous state→liquid state→gaseous state) of the refrigerant, so as to achieve the purpose of cooling.

[0060] In the second drying room 22, a plurality of electric heating pipes 8 are further installed. The electric heating pipes 8 are parallel to each other and close to the condenser 43. The electric heating pipes 8 are used for auxiliary drying of the tobacco. The electric heating pipes 8 can generate heat after being powered on, thereby playing an auxiliary heating role. The electric heating pipes 8 cooperate with the heat released by the condenser 43 to dry the tobacco, thereby improving the drying effect.

[0061] Referring to Figure 3 and Figure 4 In some embodiments, the second drying room 22 is provided with a material door 9 which is raised and lowered. The raising and lowering of the material door 9 can be realized by a sliding block and sliding rail cooperation mode. The material door 9 is used for the tobacco-containing shelf 13 to enter and exit the second drying room 22. The bottom of the second drying room 22 is further rotatably connected with a boarding 10 which is rectangular and located at the lower end of the material door 9. The boarding 10 is obliquely arranged away from the second drying room 22. The boarding 10 is used for the tobacco-containing shelf 13 to move from the horizontal ground into the second drying room 22. Before drying, when the tobacco-containing shelf 13 needs to be sent into the second drying room 22, since the second drying room 22 has a certain height from the ground, the material door 9 can be first opened, and then the tobacco-containing shelf 13 is pushed upwards along the boarding 10 into the second drying room 22. The material door 9 is provided with an observation window 11 made of a transparent material, such as glass or acrylic plate. During the drying process, the staff can see the inside of the second drying room 22 through the observation window 11 without opening the material door 9.

[0062] In combination with Figure 5The second drying room 22 is further provided with a linkage assembly 12 connected with the material door 9 and the flap 10. When the material door 9 is closed, the flap 10 is attached to the material door 9. The linkage assembly 12 comprises a pull rope 121, a fixed pulley 122, a winding wheel 123, a connecting shaft 124, a driving motor 125, a first bevel gear 126 and a second bevel gear 127. The fixed pulley 122 is rotatably connected to the top end of the second drying room 22, and a plurality of fixed pulleys 122 are provided. The winding wheel 123 is rotatably connected to the second drying room 22 and is close to the base 1. The pull rope 121 passes through the fixed pulleys 122, and one end of the pull rope 121 is fixedly connected to the upper end of the material door, and the other end is wound around the winding wheel 123.

[0063] The connecting shaft 124 is coaxially arranged with the winding wheel 123 and is rotatably connected to the second drying room 22. The output shaft of the driving motor 125 is connected with the connecting shaft 124, so as to control the rotation of the winding wheel 123. The driving motor 125 has a self-locking function. The first bevel gear 126 is coaxially arranged on the connecting shaft 124, and the second bevel gear 127 is coaxially arranged on the rotating shaft of the flap 10 and is engaged with the first bevel gear 126. When the driving motor 125 drives the winding wheel 123 to rotate, the pull rope 121 is wound around the winding wheel 123, so that the material door 9 moves vertically upward. At the same time, the first bevel gear 126 drives the second bevel gear 127 to rotate, so that the flap 10 rotates in the direction close to the ground.

[0064] When the material door 9 is closed, the flap 10 abuts against the material door 9, so that the flap 10 is prevented from being placed on the ground, thereby reducing the floor area. When the driving motor 125 drives the winding wheel 123 to rotate, the pull rope 121 is wound around the winding wheel 123 and generates a vertical upward pulling force on the material door 9, so that the material door 9 is opened.

[0065] The rotation of the connecting shaft 124 also drives the first bevel gear 126 to rotate. Since the second bevel gear 127 and the first bevel gear 126 are engaged with each other, the rotating shaft of the flap 10 is driven to rotate, so that the flap 10 rotates in the direction away from the second drying room 22. When the material door 9 is completely opened, the flap 10 is just lapped on the ground, so that the shelf 13 in the second drying room 22 can be moved out.

[0066] In combination Figure 6 In addition, the shelf 13 for placing tobacco in the embodiment comprises a shelf body 131 and a shelf plate 132. The bottom plate of the shelf body 131 is connected with a plurality of rollers 17, so that the entire shelf 13 can roll on the ground. The shelf plate 132 is horizontally arranged and is used for placing tobacco. The shelf plates 132 are spaced apart along the height direction of the shelf body 131.

[0067] The storage plate 132 comprises the first support plate 14 and the second support plate 15 arranged left and right, the first support plate 14 comprises the first plate 141 and the second plate 142, the first plate 141 is fixedly connected to the frame body 131, the second plate 142 is rotatably connected to the first plate 141 at the side close to the second support plate 15, the second plate 142 is turned over by the air spring control, and the piston rod of the air spring is connected to the second plate 142 through the hinge frame.

[0068] The second support plate 15 is arranged on the frame body 131 by the air cylinder 18, the second support plate 15 comprises the third plate 151 and the fourth plate 152, the third plate 151 is connected to the piston rod of the air cylinder 18, and the air cylinder 18 is located below the third plate 151. The fourth plate 152 is rotatably connected to the third plate 151 at the side close to the first support plate 14, the rotation shafts of the fourth plate 152 and the second plate 142 are parallel, the second plate 142 and the fourth plate 152 are both used for placing tobacco, and the circumferential sides of the second plate 142 and the fourth plate 152 are both provided with the baffle 16, the baffle 16 forms the limiting groove, and thus the tobacco is limited from falling off the second plate 142 or the fourth plate 152.

[0069] In the drying process of traditional tobacco, the position of the tobacco is generally fixed, and the drying effect is not good in this case. By arranging the storage plate 132 as the first support plate 14 and the second support plate 15, the tobacco can be placed on the second plate 142 and the fourth plate 152.

[0070] In the initial state, the second plate 142 and the fourth plate 152 are both arranged horizontally, the tobacco is stably placed on the second plate 142 and the fourth plate 152, and the second plate 142 and the fourth plate 152 are in the same horizontal plane. When it is needed to change the state of the tobacco, first, the air cylinder 18 is used to control the upward movement of the entire second support plate 15, so that the plane where the fourth plate 152 is located is higher than the plane where the second plate 142 is located, and then the air spring is used to control the rotation of the fourth plate 152, and the tobacco on the fourth plate 152 falls onto the second plate 142 under the action of gravity and rotation inertia.

[0071] Then, the air cylinder 18 is used again to control the downward movement of the entire second support plate 15, so that the plane where the fourth plate 152 is located is lower than the plane where the second plate 142 is located. Then the air spring is used to control the rotation of the second plate 142, and the tobacco on the second plate 142 falls onto the fourth plate 152 under the action of gravity and rotation inertia. The above operation is repeated to change the state of the tobacco, which can improve the drying effect of the tobacco. It should be noted that the second plate 142 and the fourth plate 152 are close to each other and almost have no gap, so that the tobacco can be prevented from falling off during the rotation.

[0072] The bottom of the frame body 131 is also provided with a collecting box, and the collecting box is provided with an opening for receiving the tobacco on the placing plate 132. The collecting box can receive the tobacco on the placing plate 132 after drying and cooling, and the collection is completed. When discharging, the second plate 142 is controlled to rotate, and the tobacco on the second plate 142 falls on the fourth plate 152, and then the fourth plate 152 is controlled to rotate, and the tobacco on the fourth plate 152 falls into the collecting box. During the turning of the second plate 142 and the fourth plate 152, a small amount of tobacco may fall off, and the collecting box can also receive the tobacco, and the tobacco in the collecting box can still be dried.

[0073] The implementation principle of the tobacco indoor drying machine of the heat pump type according to the embodiment of the present application is as follows: the partition plate 3 divides the drying room main body 2 into the first drying room 21 and the second drying room 22, when the tobacco needs to be dried, the tobacco to be dried is first placed in the second drying room 22, and then the heat pump assembly 4 is used to heat the second drying room 22. By directly installing the heat pump for drying in the interior of the drying room main body 2, and performing heat exchange with the outside through the window of the first iron wire net 5, the loss in the heat energy transmission process is reduced, and the heat efficiency is improved.

[0074] The above are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A heat pump type indoor tobacco dryer, characterized in that, The equipment includes a base (1), a drying chamber body (2), a partition plate (3), and a heat pump assembly (4). The base (1) is located at the bottom of the drying chamber body (2), and the partition plate (3) is located inside the drying chamber body (2) and divides the drying chamber body (2) into a first drying chamber (21) and a second drying chamber (22). The heat pump assembly (4) includes an evaporator (41), a compressor (42), and a condenser (43). The evaporator (41) and the compressor (42) are connected and both are located in the first drying chamber (21). The condenser (43) is located at the top of the second drying chamber (22) and is connected to the compressor (42). The second drying chamber (22) is used to dry tobacco. The first drying chamber (21) is provided with a first wire mesh (5) on one side, the first wire mesh (5) is close to the evaporator (41), and the first drying chamber (21) is connected to the outside air through the first wire mesh (5); It also includes a material door (9) and a ramp (10). The material door (9) is raised and lowered on the second drying chamber (22) and is used to allow the shelf (13) containing tobacco to enter and exit the second drying chamber (22). The ramp (10) is rotatably connected to the second drying chamber (22) and is located at the lower end of the material door (9). The ramp (10) is inclined in a direction away from the second drying chamber (22) and is used to allow the shelf (13) to move from the ground into the second drying chamber (22). It also includes a linkage component (12), which is connected to both the material door (9) and the ramp (10). When the material door (9) is in a closed state, the ramp (10) is attached to the material door (9). The linkage component (12) includes a pull rope (121), a fixed pulley (122), a winding reel (123), a connecting shaft (124), a drive motor (125), a first bevel gear (126), and a second bevel gear (127). The fixed pulley (122) is rotatably connected to the top of the second drying chamber (22), and the winding reel (123) is rotatably connected to the second drying chamber (22) and close to the base (1). The pull rope (121) passes around the fixed pulley (122), one end of the pull rope (121) is connected to the upper end of the material door (9), and the other end is wound around the winding reel (123). The connecting shaft (124) is coaxially arranged with the winding reel (123), the drive motor (125) is connected to the connecting shaft (124) and is used to control the rotation of the winding reel (123), and the drive motor (125) has a self-locking function; The first bevel gear (126) is coaxially mounted on the connecting shaft (124), and the second bevel gear (127) is mounted on the rotating shaft of the platform (10) and meshes with the first bevel gear (126). When the drive motor (125) drives the winding wheel (123) to rotate, the pull rope (121) is wound around the winding wheel (123), causing the material gate (9) to move vertically upward. The first bevel gear (126) drives the second bevel gear (127) to rotate, causing the platform (10) to rotate in the direction close to the ground. It also includes a shelf (13), which includes a frame (131) and a shelf (132). The bottom of the frame (131) is connected to several rollers (17). The shelf (132) is horizontally arranged and used for placing tobacco. The shelf (132) is spaced apart along the height direction of the frame (131). The shelf (132) includes a first support plate (14) and a second support plate (15). The first support plate (14) includes a first plate (141) and a second plate (142). The first plate (141) is fixedly connected to the frame (131). The second plate (142) is rotatably connected to the first plate (141) on the side near the second support plate (15). The second plate (142) is rotated by a gas spring. The second support plate (15) is lifted and lowered on the frame (131) by a cylinder (18). The second support plate (15) includes a third plate (151) and a fourth plate (152). The third plate (151) is connected to the piston rod of the cylinder (18). The fourth plate (152) is rotatably connected to the third plate (151) on the side near the first support plate (14). The rotation axes of the fourth plate (152) and the second plate (142) are parallel. Both the second plate (142) and the fourth plate (152) are used to place tobacco, and both are provided with baffles (16) on their periphery.

2. The heat pump type indoor tobacco dryer according to claim 1, characterized in that, Both the first drying chamber (21) and the second drying chamber (22) have an insulation layer on their inner walls, and the insulation layer is made of heat insulation material.

3. A heat pump type indoor tobacco dryer according to claim 2, characterized in that, It also includes a fan (6), a first mounting hole is provided through the side wall of the first drying chamber (21), the fan (6) is provided on the first mounting hole, the fan (6) is connected to the heat pump assembly (4) and is used to supply air to cool the second drying chamber (22); It also includes a second wire mesh (7), and a second mounting hole is provided through the side wall of the second drying chamber (22), and the second wire mesh (7) is located at the second mounting hole.

4. A heat pump type indoor tobacco dryer according to claim 1, characterized in that, It also includes an observation window (11), which is located on the material door (9) and is made of transparent material.

5. A heat pump type indoor tobacco dryer according to claim 1, characterized in that, It also includes a collection box with an opening located at the bottom of the frame (131) for receiving tobacco on the shelf (132).

6. A heat pump type indoor tobacco dryer according to claim 1, characterized in that, It also includes electric heating tubes (8), several of which are arranged in parallel and located in the second drying chamber (22). Each of the electric heating tubes (8) is close to the condenser (43) and is used to assist in the drying of tobacco.

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