Tea dryer capable of recycling exhaust waste heat

Abstract

The utility model discloses a tea dryer capable of recycling exhaust waste heat, which comprises a feeding machine and a dryer, the dryer comprises a drying box, a conveying device and a heat supply device, the drying box comprises a box body and a partition plate arranged in the box body, the box body is divided into a drainage area and a drying area through the partition plate, and the conveying device is arranged in the box body. A waste heat recovery device communicated with the drainage area is further arranged at the top of the box body, a flow guide device is arranged on the side face of the box body and communicated with the waste heat recovery device and the drying area, and hot air in the drying area forms hot air circulation through the drainage area, the waste heat recovery device and the flow guide device. According to the tea leaf drying machine, exhaust waste heat is recycled, the utilization rate of hot air is improved, and heat energy loss is reduced. Meanwhile, recovered exhaust waste heat is heated and then returns into the box body, the temperature difference between the upper layer and the lower layer in the drying area is effectively reduced, the quality of tea leaves is improved, meanwhile, energy loss is reduced, and the device is simple in overall structure, convenient to operate and suitable for application and popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to tea processing equipment technical field, concretely relates to a tea dryer of exhaust waste heat recycling. BACKGROUND

[0002] In the tea processing production process, need drying treatment to the tea, to remove the moisture in the tea, reduce the moisture content in the tea cell, make the tea type, and reduce its activity and remove the semi-permeability of the cell membrane, guarantee the follow -up processing can normally process the tea of good quality, from which can see, the good and bad of tea drying, will directly influence the quality of tea. Tea drying method, mainly has three drying forms of drying, frying and drying. No matter what kind of tea is made, which drying equipment and method is adopted, temperature is the main factor influencing the drying quality; Temperature is the condition of chemical reaction, in the drying process, thermalization plays a leading role, which plays an important role in the formation and development of tea quality. Drying is not only the process of tea water loss and setting, but also the key process of more chemical components and good aroma components of tea.

[0003] The existing tea dryer mainly includes a rack, an oven with an air inlet and an air outlet arranged on the rack, and a continuous conveying mechanism arranged in the oven; a hot air equipment with an air outlet and an air inlet is connected at the air inlet of the oven, a fan is arranged at the air inlet of the hot air equipment, the air outlet of the hot air equipment is communicated with the air inlet of the oven, and a heating device is arranged in the hot air equipment. The cold air blown by the fan enters the oven after being heated by the hot air equipment, and the hot air directly discharges from the oven after drying the tea. The temperature of each part in the oven remains basically the same during the drying process. Since the drying temperature of tea is different at different baking stages, the existing tea drying equipment is not conducive to drying the continuously entering tea.

[0004] In addition, in the process of drying tea by the existing tea dryer, the tea cannot be evenly distributed in the dryer, and the tea will be stacked together, affecting the drying effect of the tea. In order to solve the problems of stacking and uneven drying of tea during drying, the existing dryer generally adds a conveying device with a turning plate structure, which turns and dries the tea in the dryer through the turning plate, so as to improve the drying quality of the tea. However, the existing tea dryer has the following problems: first, the hot air used for drying passes through the tea in the conveying device and then directly discharges from the exhaust port of the dryer, which not only wastes heat energy but also increases the production cost of enterprises; second, the hot air used for drying in the dryer rises, and the cold air descends, resulting in a large temperature difference between the upper space and the lower space in the dryer, which affects the drying quality of the tea.

[0005] According to the search, the patent literature with the application publication number CN106343053A discloses a layered temperature control tea dryer, the patent literature with the application publication number CN110006238A discloses a turnover plate dryer, and the patent literature with the application publication number CN114353441A discloses a device for preheating tea leaves by using exhaust waste heat of a tea dryer. According to the contents disclosed in the three patent literatures searched, a dryer meeting the drying requirements of tea leaves is provided from different angles. In order to meet the drying requirements of tea leaves, reduce the temperature difference between the upper space and the lower space in the dryer, make the exhaust waste heat recyclable, improve the utilization rate of hot air, reduce the loss of heat energy, improve the drying efficiency and drying effect, and provide a dryer different from the existing technology to meet the use requirements, which has special significance. Content of the utility model

[0006] The technical problem to be solved by the utility model is to provide a tea dryer with simple structure and convenient operation, which can effectively reduce the temperature difference between the upper space and the lower space in the dryer, make the exhaust waste heat recyclable, improve the utilization rate of hot air, reduce the loss of heat energy, thereby improving the drying efficiency and drying effect.

[0007] To solve the above technical problems, the technical scheme adopted by the utility model is as follows: a tea dryer with exhaust waste heat recycling, comprising a feeding machine and a dryer, the dryer comprising a drying box, a conveying device arranged in the drying box for conveying tea leaves, and a heat supply device for supplying heat to the drying box, the drying box comprising a box body and a partition plate arranged in the box body, the box body being divided into a flow guide area and a drying area by the partition plate, a waste heat recovery device being further arranged on the top of the box body and communicating with the flow guide area, and symmetrically distributed flow guide devices being arranged on the side of the box body, the flow guide devices communicating with the waste heat recovery device and the drying area, and hot air in the drying area forming a hot air circulation through the flow guide area, the waste heat recovery device and the flow guide devices.

[0008] Further, the tea dryer of exhaust waste heat recycling utilizes the utility model, the upper feeder includes frame, upper feeder drive arrangement and upper feeder conveyer belt, the frame is arranged in the front end of drying box, the upper feeder convey belt includes two continuous chains, drive two continuous chains reciprocating movement drive sprocket and driven sprocket and be arranged in the upper feeder transport surface between two continuous chains, wherein, the chain includes inclined lifting section and horizontal conveying section, the lower end of the inclined lifting section is the inlet, the inclined lifting section is installed in the frame, and the horizontal conveying section is installed in the drying box and is located directly above the conveying device, the upper feeder drive arrangement is installed in the frame, the upper feeder drive arrangement is used to drive the drive sprocket in the upper feeder conveyer belt movement, and the inlet hopper corresponding with the inlet is further provided on the top of the frame.

[0009] Further, the tea dryer of exhaust waste heat recycling utilizes the utility model, the upper feeder transport surface includes a plurality of conveying flaps, a plurality of conveying flaps are sequentially arranged to form the upper feeder transport surface for conveying tea, one side of the conveying flap is rotatably connected with the chain, and the other side is the turnover side abutting on the upper feeder support bottom plate under the action of gravity, the conveying flap loses the support of the upper feeder support bottom plate at the discharging hole, so that the conveying flap rotates downward.

[0010] Further, the tea dryer of exhaust waste heat recycling utilizes the utility model, the upper feeder transport surface includes two transport surfaces moving around the drive sprocket and the driven sprocket, the two transport surfaces are arranged in a stacked manner, and the upper feeder support bottom plate corresponds to the transport surface, wherein, the discharging area on the upper feeder support bottom plate corresponding to the transport surface is arranged at the output end of the transport surface, the conveying flap loses the support of the upper feeder support bottom plate at the discharging hole, so that the conveying flap rotates downward, and the tea on the conveying flap falls from the upper transport surface to the lower transport surface.

[0011] Further, the tea dryer of exhaust waste heat recycling utilizes the utility model, the conveying device is provided with a plurality of conveying devices, the plurality of conveying devices are arranged in parallel in the box, and are located directly below the horizontal conveying section in the upper feeder conveyer belt, each conveying device includes a conveying drive device and a conveying conveyer belt, the conveying conveyer belt includes two continuous chains, a driving sprocket and a driven sprocket for driving the two continuous chains to reciprocate, and a conveying transport surface arranged between the two continuous chains, the conveying drive device is installed on the box, and the conveying drive device is used to drive the driving sprocket in the conveying conveyer belt to move.

[0012] Further, the tea dryer of exhaust waste heat recycling utilizes the tea dryer, the conveying device is provided with three, three conveying devices are evenly arranged in the parallel state in the box body, the conveying surface of each conveying device includes two conveying surfaces that move around the driving sprocket and the driven sprocket, the two conveying surfaces are arranged in the upper and lower layers, and the conveying support bottom plate corresponds to the conveying surface, wherein the drop area on the conveying support bottom plate corresponding to the conveying surface is arranged at the output end of the conveying surface, the conveying flap loses the support of the conveying support bottom plate at the drop hole, so that the conveying flap rotates downward, and the tea on the conveying flap falls from the upper conveying surface to the lower conveying surface.

[0013] Further, the tea dryer of exhaust waste heat recycling utilizes the tea dryer, the conveying device is provided with three, three conveying devices are evenly arranged in the parallel state in the box body, the conveying surface of each conveying device includes two conveying surfaces that move around the driving sprocket and the driven sprocket, the two conveying surfaces are arranged in the upper and lower layers, and the conveying support bottom plate corresponds to the conveying surface, wherein the drop area on the conveying support bottom plate corresponding to the conveying surface is arranged at the output end of the conveying surface, the conveying flap loses the support of the conveying support bottom plate at the drop hole, so that the conveying flap rotates downward, and the tea on the conveying flap falls from the upper conveying surface to the lower conveying surface.

[0014] Further, the tea dryer of exhaust waste heat recycling utilizes the tea dryer, the waste heat recovery device includes a waste heat recovery unit, a waste heat conveying unit, a waste heat mixing unit and a waste heat distribution unit, the waste heat conveying unit is arranged at the top of the box body, the waste heat recovery unit and the waste heat mixing unit are symmetrically arranged in front of and behind the waste heat conveying unit along the conveying direction of the conveying device, and the waste heat distribution unit is symmetrically arranged on the two sides of the waste heat recovery unit and the waste heat mixing unit, the waste heat recovery unit is communicated with the drainage area through the waste heat recovery port arranged at the top of the box body, the waste heat distribution unit and the flow guide device are communicated through the flow guide pipeline arranged between the waste heat distribution unit and the flow guide device, and the hot air in the drying area forms a hot air circulation through the drainage area, the waste heat recovery unit, the waste heat conveying unit, the waste heat mixing unit, the waste heat distribution unit and the flow guide device.

[0015] Further, the utility model discloses a kind of exhaust waste heat recycling's tea leaf dryer, the waste heat recovery unit includes waste heat recovery tank, waste heat recovery ware and guiding wind bag, the waste heat recovery tank is set to the left position at the top of the box, waste heat recovery ware and guiding wind bag are all set in waste heat recovery tank, wherein, the guiding wind bag is equipped with four, two layering arrangements guiding wind bag are respectively arranged in the front and rear ends of waste heat recovery ware, four guiding wind bag are communicated with waste heat recovery ware respectively;Four partition plates are provided in the waste heat recovery ware, the waste heat recovery ware is divided into upper waste heat recovery channel and lower waste heat drainage channel from top to bottom by four partition plates, the waste heat recovery unit is communicated with drainage area in the box by waste heat recovery channel in waste heat recovery ware and waste heat recovery mouth on the top of the box;The waste heat drainage channel is equipped with four layers, and series laminar flow circulation structure is formed between waste heat recovery channel and waste heat drainage channel by the guiding wind bag of both ends;

[0016] The waste heat delivery unit includes first fan, first diverting wind bag and first air pipe, the first diverting wind bag is communicated with the guiding wind bag in waste heat recovery unit located at the rear end of waste heat recovery tank, the first fan is installed at the top of first diverting wind bag, the input end of the first fan is communicated with first diverting wind bag, and the first air pipe is installed at the output end of the first fan, and the first fan is communicated with the waste heat mixing unit by the first air pipe;

[0017] The waste heat mixing unit includes waste heat mixing tank, waste heat mixer and mixing wind bag, the waste heat mixing tank is set to the right position at the top of the box, waste heat mixer and mixing wind bag are all set in waste heat mixing tank, wherein, the mixing wind bag is equipped with four, two layering arrangements mixing wind bag are respectively arranged in the front and rear ends of waste heat mixing tank, four mixing wind bag are communicated with waste heat mixer respectively;Four partition plates are provided in the waste heat mixer, the waste heat mixer is divided into upper air supply channel and lower waste heat mixing channel from top to bottom by four partition plates, the waste heat mixing unit is communicated with the first air pipe in waste heat delivery unit by upper air supply channel;The waste heat mixing channel is equipped with four layers, and series laminar flow circulation structure is formed between air supply channel and four waste heat mixing channels by mixing wind bag;

[0018] The waste heat distribution unit comprises a waste heat heating tank, distribution air bags, second air fans, second turning air bags and guide air bags, the waste heat heating tank is arranged at the middle position of the top of the box body, two distribution air bags are symmetrically arranged on the left and right sides of the waste heat heating tank, an electric heater is further arranged in the waste heat heating tank, two second air fans are symmetrically arranged on the top of the waste heat heating tank, the input end of the second air fan is communicated with the waste heat heating tank, a second turning air bag is arranged on the output end of the second air fan, the distribution air bag is communicated with the waste heat heating tank through the second turning air bag, four guide air bags are arranged on the left and right sides of the waste heat recovery unit and the waste heat mixing unit, the guide air bag is communicated with the distribution air bag, and the guide air bag is communicated with the guide device through a guide pipeline.

[0019] Further, the exhaust waste heat recycling tea leaf dryer has the guide device arranged on the side of the box body, the guide device is communicated with the wind volume control plate, and the exhaust gas in the drying area forms hot air circulation under the action of the first air fan and the second air fan, so that the layered heating of the drying area in the box body is realized.

[0020] Compared with the prior art, the exhaust waste heat recycling tea leaf dryer has the following beneficial effects: the waste heat recovery device arranged on the top of the box body and the guide device arranged on the side of the box body are used, the exhaust waste heat in the drying area forms hot air circulation under the action of the first air fan and the second air fan, and the exhaust waste heat recycling is realized; meanwhile, the electric heater arranged in the waste heat heating tank can heat the recycled hot air, and finally the hot air is returned to the box body through the guide device, so that the layered heating of the drying area in the box body is realized, the temperature difference between the upper and lower layers in the drying area is effectively reduced, the quality of the tea leaves is improved, and the energy loss is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model discloses a further in detail below combining the drawing.

[0022] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0023] Figure 2 It is the structure schematic diagram of the utility model;

[0024] Figure 3 It is Figure 2 The plan view of

[0025] Figure 4 It is Figure 2 The side view of

[0026] Figure 5 It is the three-dimensional structure schematic diagram of the waste heat recovery device and the flow guide device in the utility model;

[0027] Figure 6 It is the structure schematic diagram of the waste heat recovery device and the flow guide device in the utility model;

[0028] Figure 7 It is Figure 6 The plan view of

[0029] Figure 8 It is Figure 6 The side view of

[0030] Figure 9 It is the tea conveying principle schematic diagram in the utility model.

[0031] As shown in the figure: 1-feeding machine, 11-frame, 12-feeding drive device, 13-feeding conveyor belt, 14-feeding hopper, 15-feeding support bottom plate, 2-drying box, 21-box body, 22-baffle, 23-drainage area, 24-drying area, 25-supporting seat, 3-conveying device, 31-conveying drive device, 32-conveying conveyor belt, 33-conveying support bottom plate, 4-waste heat recovery device, 41-waste heat recovery unit, 411-waste heat recovery box, 412-waste heat recovery device, 413-guiding wind bag, 414-waste heat recovery channel, 415-waste heat drainage channel, 42-waste heat conveying unit, 421-first fan, 422-first turning wind bag, 423-first air pipe, 43-waste heat mixing unit, 431-waste heat mixing box, 432-waste heat mixer, 433-mixing wind bag, 434-air supply channel, 435-waste heat mixing channel, 44-waste heat distribution unit, 441-waste heat heating box, 442-distribution wind bag, 443-second fan, 444-second turning wind bag, 445-flow guide wind bag, 5-flow guide device, 6-flow guide pipeline. DETAILED DESCRIPTION

[0032] The following specific embodiments illustrate the embodiments of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosed content of the specification.

[0033] It should be understood that the structure, proportion, size, etc. shown in the drawings of the specification are only used to understand and read the disclosed content by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content. At the same time, the terms such as "upper", "lower", "left", "right" and the like used in the specification are only for clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the implementation scope of the present application.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "provided with" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] It should be noted that the term "includes" or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Example 1

[0036] As shown in Figures 1 to 8 The present embodiment provides a tea drying machine for recycling exhaust heat, which comprises a feeding machine 1 and a drying machine. The drying machine comprises a drying box 2, a conveying device 3 arranged in the drying box 2 for conveying tea leaves, and a heat supply device for supplying heat to the drying box 2. The drying box 2 comprises a box body 21 and a partition plate 22 arranged in the box body 21. The box body 21 is divided into a flow guide area 23 and a drying area 24 by the partition plate 22. A waste heat recovery device 4 is arranged on the top of the box body 21 and communicates with the flow guide area 23. Symmetrically distributed flow guide devices 5 are arranged on the side of the box body 21. The flow guide devices 5 communicate with the waste heat recovery device 4 and the drying area 24. Hot air in the drying area 24 forms a hot air circulation through the flow guide area 23, the waste heat recovery device 4 and the flow guide devices 5.

[0037] Further, the tea dryer with exhaust waste heat recycling device of the embodiment comprises a rack 11, a feeding driving device 12 and a feeding conveyor belt 13. The rack 11 is arranged at the front end of the drying box 2. The feeding conveyor belt 13 comprises two continuous chains, driving sprocket and driven sprocket for reciprocating movement of the two continuous chains, and a feeding conveying surface arranged between the two continuous chains. The chain comprises an inclined lifting section and a horizontal conveying section. The lower end of the inclined lifting section is a feeding inlet. The inclined lifting section is installed in the rack 11, and the horizontal conveying section is installed in the drying box 2 and located directly above the conveying device 3. The feeding driving device 12 is installed in the rack 11 and used to drive the driving sprocket of the feeding conveyor belt 13 to move. A feeding hopper 14 corresponding to the feeding inlet is arranged at the top of the rack 11. Meanwhile, an upper feeding support plate 15 for supporting the feeding conveying surface is arranged in the drying box 2. A discharging area is arranged on the upper feeding support plate 15. The feeding conveying surface comprises a plurality of conveying flaps. The conveying flaps are sequentially arranged to form the feeding conveying surface for conveying tea. One side of the conveying flap is rotatably connected to the chain, and the other side is a turnover side resting on the upper feeding support plate 15 by gravity. The conveying flap loses the support of the upper feeding support plate 15 at the discharging hole, so that the conveying flap rotates downward. The feeding conveying surface comprises two conveying surfaces moving around the driving sprocket and the driven sprocket. The two conveying surfaces are arranged in a stacked manner. The upper feeding support plate 15 corresponding to the conveying surface is arranged at the output end of the conveying surface. The conveying flap loses the support of the upper feeding support plate 15 at the discharging hole, so that the conveying flap rotates downward. The tea on the conveying flap falls from the upper conveying surface to the lower conveying surface.

[0038] Further, the tea dryer with exhaust waste heat recycling utilizes the conveying device 3, which is provided with multiple conveying devices 3 arranged in parallel in the box 21 and located directly below the horizontal conveying section in the feeding conveyor belt 13. Each conveying device 3 comprises a conveying driving device 31 and a conveying conveyor belt 32, the conveying conveyor belt 32 comprises two continuous chains, a driving sprocket and a driven sprocket for driving the two continuous chains to reciprocally move, and a conveying transportation surface arranged between the two continuous chains. The conveying driving device 31 is installed on the box 21 and used to drive the driving sprocket in the conveying conveyor belt 32 to move. Meanwhile, the conveying support bottom plate 33 for supporting the conveying transportation surface is arranged in the drying box 2, and the blanking area is arranged on the conveying support bottom plate 33. The conveying transportation surface comprises multiple conveying flaps arranged in sequence to form the conveying transportation surface for conveying tea leaves. One side of the conveying flap is rotatably connected with the chain, and the other side is the turnover side abutting against the conveying support bottom plate under the action of gravity. The conveying flap loses the support of the conveying support bottom plate 33 at the blanking hole, so that the conveying flap rotates downward.

[0039] Further, the tea dryer with exhaust waste heat recycling utilizes the waste heat recovery device 4, which comprises a waste heat recovery unit 41, a waste heat conveying unit 42, a waste heat mixing unit 43, and a waste heat distribution unit 44. The waste heat conveying unit 42 is arranged at the top of the box 21. The waste heat recovery unit 41 and the waste heat mixing unit 43 are symmetrically arranged in front of and behind the waste heat conveying unit 42 along the conveying direction of the conveying device 3. The waste heat distribution unit 44 is symmetrically arranged on both sides of the waste heat recovery unit 41 and the waste heat mixing unit 43. The waste heat recovery port is arranged at the top of the box 21 and communicates with the flow guide area 23. The waste heat recovery unit 41 communicates with the flow guide area 23 through the waste heat recovery port. The flow guide pipeline is arranged between the waste heat distribution unit 44 and the flow guide device 5. The waste heat distribution unit 44 communicates with the flow guide device 5 through the flow guide pipeline. The hot air in the drying area 24 forms a hot air circulation through the flow guide area 23, the waste heat recovery unit 41, the waste heat conveying unit 42, the waste heat mixing unit 43, the waste heat distribution unit 44, and the flow guide device 5.

[0040] Further, the tea dryer with exhaust heat recycling according to the embodiment comprises the exhaust heat recovery unit 41, the exhaust heat recovery unit 41 comprises the exhaust heat recovery box 411, the exhaust heat recovery device 412 and the guide air bag 413, the exhaust heat recovery box 411 is arranged at the left top of the box 21, the exhaust heat recovery device 412 and the guide air bag 413 are arranged in the exhaust heat recovery box 411, wherein the guide air bag 413 is provided with four, two guide air bags 413 are arranged in layers at the front and rear ends of the exhaust heat recovery device 412, and the four guide air bags 413 are communicated with the exhaust heat recovery device 412; four partition plates are arranged in the exhaust heat recovery device 412, the exhaust heat recovery device 412 is divided into the upper exhaust heat recovery channel 414 and the lower exhaust heat drainage channel 415 from top to bottom through the four partition plates, the exhaust heat recovery unit 41 is communicated with the drainage area 23 in the box 21 through the exhaust heat recovery channel 414 in the exhaust heat recovery device 412 and the exhaust heat recovery port at the top of the box 21; the exhaust heat drainage channel 415 is provided with four layers, and the exhaust heat recovery channel 414 and the exhaust heat drainage channel 415 form a series laminar flow circulation structure through the guide air bags 413 at both ends;

[0041] The exhaust heat conveying unit 42 comprises the first fan 421, the first diversion air bag 422 and the first air pipe 423, the first diversion air bag 422 is communicated with the guide air bag 413 at the rear end of the exhaust heat recovery unit 41 in the exhaust heat recovery box 411, the first fan 421 is installed at the top of the first diversion air bag 422, the input end of the first fan 421 is communicated with the first diversion air bag 422, the first air pipe 423 is installed at the output end of the first fan 421, and the first fan 421 is communicated with the exhaust heat mixing unit 43 through the first air pipe 423;

[0042] The exhaust heat mixing unit 43 comprises the exhaust heat mixing box 431, the exhaust heat mixer 432 and the mixing air bag 433, the exhaust heat mixing box 431 is arranged at the right top of the box 21, the exhaust heat mixer 432 and the mixing air bag 433 are arranged in the exhaust heat mixing box 431, wherein the mixing air bag 433 is provided with four, two mixing air bags 433 are arranged in layers at the front and rear ends of the exhaust heat mixing box 431, and the four mixing air bags 432 are communicated with the exhaust heat mixer 432; four partition plates are arranged in the exhaust heat mixer 432, the exhaust heat mixer 432 is divided into the upper air supply channel 434 and the lower exhaust heat mixing channel 435 from top to bottom through the four partition plates, the exhaust heat mixing unit 43 is communicated with the first air pipe 423 in the exhaust heat conveying unit 42 through the upper air supply channel 433; the exhaust heat mixing channel 435 is provided with four layers, and the air supply channel 434 and the four exhaust heat mixing channels form a series laminar flow circulation structure through the mixing air bags 433;

[0043] The waste heat distribution unit 44 includes a waste heat heating tank 441, two distribution air bags 442, two second air fans 443, two second turning air bags 444 and four guide air bags 445. The waste heat heating tank 441 is arranged at the middle of the top of the tank 21. The two distribution air bags 442 are symmetrically arranged on the left and right sides of the waste heat heating tank 441. An electric heater 446 is arranged in the waste heat heating tank 441. The two second air fans 443 are symmetrically arranged on the top of the waste heat heating tank 441. The input ends of the second air fans 443 are communicated with the waste heat heating tank 441. The second turning air bags 444 are arranged on the output ends of the second air fans 443. The distribution air bags 442 are communicated with the waste heat heating tank 441 through the second turning air bags 444. The four guide air bags 445 are arranged on the left and right sides of the waste heat recovery unit 41 and the waste heat mixing unit 43. The guide air bags 445 are communicated with the distribution air bags 442 through the guide pipes 6.

[0044] Further, the tea drying machine with exhaust waste heat recycling according to the embodiment includes the guide device 5 which includes the guide box 51 and the air volume control plate 52 arranged on the guide box 51. The guide box 51 is arranged on the outer side of the tank 21. The number of the air volume control plate 52 corresponds to the number of the conveying devices 3 in the tank 21. The guide interface 53 is arranged on the side of the tank 21 and communicated with the drying area 24. The guide interface 53 corresponds to the air volume control plate 52. The guide interface 53 and the air volume control plate 52 are communicated. The exhaust air in the drying area 24 is circulated to the drying area 24 by the first air fan 421 and the second air fan 443 to realize the layered heating of the drying area 24 in the tank 21.

[0045] In the specific application process, the tea dryer adopting the exhaust waste heat recycling device described in the embodiment is characterized in that the conveying device 3 is provided with three conveying devices 3, and the three conveying devices 3 are arranged in parallel and uniformly in the box 21; the conveying and transporting surface in each conveying device 3 comprises two transporting surfaces moving around the driving sprocket and the driven sprocket, the two transporting surfaces are arranged in a stacked manner, and the conveying support bottom plate 33 corresponds to the transporting surface, wherein the dropping area on the conveying support bottom plate 33 corresponding to the transporting surface is arranged at the output end of the transporting surface, the conveying flap loses the support of the conveying support bottom plate 33 at the dropping hole, so that the conveying flap rotates downward, and the tea on the conveying flap falls from the upper transporting surface to the lower transporting surface. The three conveying devices 3 are adopted to perform the drying treatment, so that the tea can meet the drying treatment requirements, the processing efficiency is improved, and the drying quality is improved, and the specific drying temperature can be controlled according to the corresponding temperature of different tea. Embodiment 2

[0046] In order to conveniently transport the tea in the box 21 after the drying treatment to the next process for processing, the automatic control is realized, and the tea dryer adopting the exhaust waste heat recycling device described in the embodiment is characterized in that the box 21 is further provided with a support seat 25 at the bottom, and the height of the box 21 is raised by the support seat 25, so that the tea in the box 21 is conveniently transported to the next processing process by the conveying device.

[0047] As shown in Figure 9 The working principle of the tea dryer adopting the exhaust waste heat recycling device described in the utility model is that the tea to be dried is put on the upper feeding belt 13 in the upper feeder 1 through the feeding hopper 14, is conveyed to the drying area 24 in the drying box 2 through the upper feeding belt 13, and when reaching the dropping hole, the dropping area is arranged in the upper feeding support bottom plate 15, and the dropping area is arranged at the output end of the transporting surface, so that the conveying flap loses the support of the upper feeding support bottom plate 15 at the dropping hole, so that the conveying flap rotates downward, and the tea on the conveying flap falls from the upper transporting surface to the lower transporting surface, and the tea falls to the lower layer, and the tea is repeatedly conveyed in the lower layer, so that the continuous conveying is realized, and the drying treatment is achieved in the conveying process.

[0048] The tea transported by the feeding conveying belt 13 falls onto the conveying conveying belt 32 in the conveying device 3, and since the conveying support bottom plate 33 for supporting the conveying transport surface is further arranged in the drying box 2, and the dropping area is arranged on the conveying support bottom plate 33, when the conveying flap loses the support of the conveying support bottom plate 33 at the dropping hole, the conveying flap rotates downward, and the tea on the conveying flap falls from the upper transport surface to the lower transport surface, and the tea falls to the lower layer, and the tea on the lower layer repeats the above conveying process, so that continuous conveying is realized. Since three conveying devices 3 are arranged in the drying box 2, the tea is conveyed back and forth on one conveying layer once, so that the tea is conveyed six times. Compared with the common chain transmission or belt transmission mode, the conveying device 3 can increase the stroke of the tea without increasing the volume, and the drying treatment can be performed during the conveying process, so that the drying time of the tea is reduced, and the drying effect is improved, and thus the quality of the tea is improved.

[0049] In addition, since the waste heat recovery device 4 and the flow guide device 5 are further arranged, the waste heat recovery device 4 comprises a waste heat recovery unit 41, a waste heat conveying unit 42, a waste heat mixing unit 43 and a waste heat distribution unit 44, and the waste heat distribution unit 44 and the flow guide device 5 are communicated through the flow guide pipeline arranged therebetween, so that the hot air in the drying area 24 forms a hot air circulation through the flow guide area 23, the waste heat recovery unit 41, the waste heat conveying unit 42, the waste heat mixing unit 43, the waste heat distribution unit 44 and the flow guide device 5, and the exhaust waste heat recycling is realized.

[0050] Therefore, the tea dryer has the advantages that the waste heat recovery device 4 arranged on the top of the box body 21 and the flow guide device 5 arranged on the side of the box body 21 are arranged, under the action of the first fan 421 and the second fan 443, the exhaust waste heat in the drying area 24 forms a hot air circulation, the exhaust waste heat recycling is realized, the electric heater 446 arranged in the waste heat heating box 441 can heat the recycled hot air, and finally the hot air returns to the box body 21 through the flow guide device 5, so that the drying area 24 in the box body 21 is heated in layers, the temperature difference between the upper layer and the lower layer in the drying area 24 is effectively reduced, the quality of the tea is improved, and the energy loss is reduced.

[0051] In conclusion, the tea dryer has the advantages that the exhaust waste heat is recycled, the utilization rate of the hot air is greatly improved, the heat energy loss is reduced, the recycled exhaust waste heat is heated and then returned to the box body 21, so that the heat supply is realized in layers, the temperature difference between the upper layer and the lower layer in the drying area 24 is effectively reduced, the quality of the tea is improved, the energy loss is reduced, the overall structure is simple, the operation is convenient, the market competitiveness is improved, and the tea dryer is suitable for popularization and application.

[0052] The tea drying machine, wherein the feeding driving device 12, the feeding conveyor belt 13, the conveying driving device 31, the conveying conveyor belt 32, the first fan 421 and the second fan 443 are all known technical solutions in the prior art, thus no detailed description is made in the specification. Figure 2 The arrow in the figure indicates the conveying direction of the exhaust waste heat, and the arrow in the figure indicates the conveying direction of the tea. Figure 9 The arrow in the figure indicates the conveying direction of the tea, and other parts not described in detail are conventional technologies known to those skilled in the art.

[0053] The protection scope of the utility model is not limited to the technical solutions disclosed in the specific embodiments, and the above description is only a preferred embodiment of the utility model, and does not limit the utility model, and any slight modification, equivalent replacement and improvement according to the technical solutions of the utility model should be included in the protection scope of the technical solutions of the utility model.

Claims

1. A tea drying machine that utilizes exhaust waste heat, comprising a feeding machine (1) and a drying machine, wherein the drying machine includes a drying chamber (2), a conveying device (3) disposed within the drying chamber (2) for conveying tea leaves, and a heating device for supplying heat to the drying chamber (2), characterized in that: The drying oven (2) includes a box body (21) and a partition (22) disposed inside the box body (21). The box body (21) is divided into a diversion area (23) and a drying area (24) by the partition (22). A waste heat recovery device (4) communicating with the diversion area (23) is also provided on the top of the box body (21), and symmetrically distributed guide devices (5) are provided on the side of the box body (21). The guide devices (5) are communicating with the waste heat recovery device (4) and the drying area (24). The hot air in the drying area (24) forms a hot air circulation through the diversion area (23), the waste heat recovery device (4) and the guide devices (5).

2. The tea drying machine for recycling exhaust waste heat according to claim 1, characterized in that: The feeding machine (1) includes a frame (11), a feeding drive device (12), and a feeding conveyor belt (13). The frame (11) is located at the front end of the drying chamber (2). The feeding conveyor belt (13) includes two continuous chains, a drive sprocket and a driven sprocket that drive the two continuous chains to move back and forth, and a feeding transport surface located between the two continuous chains. The chain includes an inclined lifting section and a horizontal conveying section. The lower end of the inclined lifting section is the feed inlet. The inclined lifting section is installed in the frame (11), while the horizontal conveying section is installed in the drying chamber (2) and located directly above the conveying device (3). The feeding drive device (12) is installed in the frame (11) and is used to drive the drive sprocket in the feeding conveyor belt (13) to move. A feed hopper (14) corresponding to the feed inlet is also provided on the top of the frame (11).

3. A tea drying machine for recycling exhaust waste heat according to claim 2, characterized in that: The drying box (2) is also provided with a feeding support base plate (15) for supporting the feeding transport surface, and a material dropping area is provided on the feeding support base plate (15). The feeding transport surface includes multiple conveying flaps, which are arranged in sequence to form a feeding transport surface for conveying tea leaves. One side of the conveying flap is rotatably connected to the chain, while the other side is a flipping side that is subjected to gravity and abuts against the feeding support base plate (15). The conveying flap loses the support of the feeding support base plate (15) at the material dropping hole, thereby causing the conveying flap to rotate downward.

4. A tea drying machine for recycling exhaust waste heat according to claim 3, characterized in that: The feeding and conveying surface includes two conveying surfaces that move around the drive sprocket and the driven sprocket. The two conveying surfaces are stacked one on top of the other. The feeding support base plate (15) corresponds to the conveying surface. The material dropping area on the feeding support base plate (15) corresponding to the conveying surface is set at the output end of the conveying surface. The conveying flap loses the support of the feeding support base plate (15) at the material dropping hole, thereby causing the conveying flap to rotate downward. The tea leaves on the conveying flap fall from the upper conveying surface to the lower conveying surface.

5. A tea drying machine for recycling exhaust waste heat according to claim 2, characterized in that: The conveying device (3) is provided in multiple ways. The multiple conveying devices (3) are arranged in parallel in the housing (21) and located directly below the horizontal conveying section in the feeding conveyor belt (13). Each conveying device (3) includes a conveying drive device (31) and a conveying conveyor belt (32). The conveying conveyor belt (32) includes two continuous chains, a drive sprocket and a driven sprocket that drive the two continuous chains to move back and forth, and a conveying surface set between the two continuous chains. The conveying drive device (31) is installed on the housing (21) and is used to drive the drive sprocket in the conveying conveyor belt (32) to move.

6. A tea drying machine for recycling exhaust waste heat according to claim 5, characterized in that: The drying box (2) is also provided with a conveyor support base plate (33) for supporting the conveyor transport surface, and a material dropping area is provided on the conveyor support base plate (33). The conveyor transport surface includes multiple conveyor flip plates, which are arranged in sequence to form a conveyor transport surface for conveying tea leaves. One side of the conveyor flip plate is rotatably connected to the chain, while the other side is a flip side that is subjected to gravity and abuts against the conveyor support base plate. The conveyor flip plate loses the support of the conveyor support base plate (33) at the material dropping hole, thereby causing the conveyor flip plate to rotate downward.

7. A tea drying machine for recycling exhaust waste heat according to claim 6, characterized in that: The conveying device (3) is provided in three parts, and the three conveying devices (3) are evenly arranged in parallel in the box (21); the conveying transport surface in each conveying device (3) includes two transport surfaces that move around the driving sprocket and the driven sprocket. The two transport surfaces are stacked one above the other, and the conveying support base plate (33) corresponds to the transport surface. The material dropping area on the conveying support base plate (33) corresponding to the transport surface is set at the output end of the transport surface. The conveying flip plate loses the support of the conveying support base plate (33) at the material dropping hole, thereby causing the conveying flip plate to rotate downward. The tea leaves on the conveying flip plate fall from the upper transport surface to the lower transport surface.

8. A tea drying machine for recycling exhaust waste heat according to claim 1, characterized in that: The waste heat recovery device (4) includes a waste heat recovery unit (41), a waste heat conveying unit (42), a waste heat mixing unit (43), and a waste heat distribution unit (44). The waste heat conveying unit (42) is located on the top of the housing (21). The waste heat recovery unit (41) and the waste heat mixing unit (43) are arranged symmetrically in front of and behind the waste heat conveying unit (42) along the conveying direction of the conveying device (3), while the waste heat distribution unit (44) is arranged symmetrically on both sides of the waste heat recovery unit (41) and the waste heat mixing unit (43). The top is provided with a waste heat recovery port that communicates with the diversion zone (23). The waste heat recovery unit (41) communicates with the diversion zone (23) through the waste heat recovery port. A guide pipe (6) is provided between the waste heat distribution unit (44) and the guide device (5). The waste heat distribution unit (44) and the guide device (5) communicate through the guide pipe (6). The hot air in the drying zone (24) forms a hot air circulation through the diversion zone (23), the waste heat recovery unit (41), the waste heat conveying unit (42), the waste heat mixing unit (43), the waste heat distribution unit (44), and the guide device (5).

9. A tea drying machine for recycling exhaust waste heat according to claim 8, characterized in that: The waste heat recovery unit (41) includes a waste heat recovery box (411), a waste heat recovery device (412), and a guide air bag (413). The waste heat recovery box (411) is located on the top left side of the box body (21). The waste heat recovery device (412) and the guide air bag (413) are both located inside the waste heat recovery box (411). There are four guide air bags (413). Two stacked guide air bags (413) are located at the front and rear ends of the waste heat recovery device (412). The four guide air bags (413) are respectively connected to the waste heat recovery device (412). (412) is provided with four partition plates. The waste heat recovery unit (412) is divided from top to bottom into an upper waste heat recovery channel (414) and a lower waste heat diversion channel (415) through the four partition plates. The waste heat recovery unit (41) is connected to the diversion area (23) in the box (21) through the waste heat recovery channel (414) in the waste heat recovery unit (412) and the waste heat recovery port at the top of the box (21). The waste heat diversion channel (415) is provided with four layers. The waste heat recovery channel (414) and the waste heat diversion channel (415) are connected in series through the guide air jackets (413) at both ends to form a laminar flow circulation structure. The waste heat conveying unit (42) includes a first fan (421), a first steering air bag (422), and a first air duct (423). The first steering air bag (422) is connected to the guide air bag (413) located at the rear end of the waste heat recovery box (411) in the waste heat recovery unit (41). The first fan (421) is installed on the top of the first steering air bag (422). The input end of the first fan (421) is connected to the first steering air bag (422). The first air duct (423) is installed at the output end of the first fan (421). The first fan (421) is connected to the waste heat mixing unit (43) through the first air duct (423). The waste heat mixing unit (43) includes a waste heat mixing box (431), a waste heat mixer (432), and a mixing air bag (433). The waste heat mixing box (431) is located on the top right side of the box body (21). The waste heat mixer (432) and the mixing air bag (433) are both located inside the waste heat mixing box (431). There are four mixing air bags (433). Two stacked mixing air bags (433) are located at the front and rear ends of the waste heat mixing box (431). The four mixing air bags (433) are respectively connected to the waste heat mixer (432). 2) Connected; The waste heat mixer (432) is provided with four partition plates. The waste heat mixer (432) is divided from top to bottom into an upper air supply channel (434) and a lower waste heat mixing channel (435) through the four partition plates. The waste heat mixing unit (43) is connected to the first air duct (423) in the waste heat conveying unit (42) through the upper air supply channel (434). The waste heat mixing channel (435) is provided with four layers. The air supply channel (434) and the four layers of the waste heat mixing channel form a series laminar flow circulation structure through the mixing air package (433). The waste heat distribution unit (44) includes a waste heat heating box (441), a distribution air receiver (442), a second fan (443), a second deflecting air receiver (444), and a guide air receiver (445). The waste heat heating box (441) is located at the top center of the box body (21). There are two distribution air receivers (442) and two second fans (443). The two distribution air receivers (442) are arranged symmetrically on the left and right sides of the waste heat heating box (441). An electric heater (446) is also provided in the waste heat heating box (441). The two second fans (443) are installed symmetrically on the waste heat heating box (441). 41) At the top, the input end of the second fan (443) is connected to the waste heat heating box (441). A second deflecting air bag (444) is installed at the output end of the second fan (443). The distribution air bag (442) is connected to the waste heat heating box (441) through the second deflecting air bag (444). There are four flow guiding air bags (445). A flow guiding air bag (445) is provided on the left and right sides of the waste heat recovery unit (41) and the waste heat mixing unit (43). The flow guiding air bag (445) is connected to the distribution air bag (442). The flow guiding air bag (445) is connected to the flow guiding device (5) through the flow guiding pipe (6).

10. A tea drying machine for recycling exhaust waste heat according to claim 9, characterized in that: The flow guiding device (5) includes a flow guiding box (51) and an air volume control plate (52) set on the flow guiding box (51). The flow guiding box (51) is set on the outer side of the box body (21). The number of air volume control plates (52) corresponds to the conveying device (3) in the box body (21). A flow guiding interface (53) communicating with the drying zone (24) is provided on the side of the box body (21). The flow guiding interface (53) corresponds to the air volume control plate (52). Through the communication between the air volume control plate (52) on the flow guiding box (51) and the flow guiding interface (53) on the box body (21), under the action of the first fan (421) and the second fan (443), the exhaust in the drying zone (24) forms a hot air circulation, realizing the layered heating of the drying zone (24) in the box body (21). A support base (25) is also provided at the bottom of the box body (21).

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