Combined tea withering machine air path system

Abstract

The application provides a kind of complex tea withering machine air path system, including from high to low arrangement multiple layers of framework, framework is evenly divided into several withering areas from front end to rear end, each withering area is arranged a fan, or vertically arranged multiple layers of withering area share same fan, the mesh belt of withering area includes upper baffle, lower baffle, the space between upper baffle and lower baffle is provided with inclined baffle, the fan supplies air from the side of space between upper baffle and lower baffle, so that wind travels along the upper surface of inclined baffle.The complex tea withering machine air path system, simple structure, reasonable design, high work efficiency, small floor area, saves manpower, can ensure that wind can uniformly penetrate leaf layer, ensure that withering degree is uniform and consistent.

Description

Technical Field

[0001] The invention relates to a tea air-drying device, in particular to an air path system of a compound tea withering machine. Background Art

[0002] Tea withering machine is an essential equipment in the withering process of tea production. Withering machines mainly have two structures: single-layer and duplex (multi-layer).

[0003] Single-layer withering machines are gradually being replaced by duplex (multi-layer) withering machines due to their small storage capacity per unit space. Single-layer withering machines have a simple structure and a high-volume fan that blows air directly onto the spread fresh leaves through the bottom air duct, resulting in relatively uniform moisture distribution in the withered leaves.

[0004] The compound withering machine adopts a multi-layer structure, with tea leaves placed on each layer using a mesh belt. It has a large production capacity and a small inter-layer spacing, so it is impossible to use a single-layer air duct. Currently, the wind is mostly drawn to the bottom of the leaf layer through a blowing duct, and then blown to the tea leaves through holes punched on the upper surface of the duct (air supply duct holes). The wind loses a lot of energy in the duct, resulting in low wind pressure at the end and unable to penetrate the leaf layer, resulting in uneven withering degree of the fresh leaves spread out by the compound withering machine.

[0005] Furthermore, the fans in compound withering machines usually use ordinary centrifugal fans, which have large air volume but low air pressure. After the air is blown out through the air supply pipe holes, part of it blows upward to the bottom of the mesh belt and blows to the leaf surface, while part of it encounters the resistance of the mesh belt after being blown out from the air supply pipe holes and flows to both sides. It does not blow to the leaf layer, but blows directly into the external space, resulting in reduced wind pressure and air volume, and is unable to penetrate the leaf layer on the withering machine mesh belt. In addition, due to the spacing between the air ducts and holes, some leaf layers cannot be blown by the wind. The above reasons all lead to uneven withering. Summary of the Invention

[0006] The present invention provides an air duct system for a compound tea withering machine, which solves the problem of uneven withering degree in the compound tea withering machine. The technical solution is as follows:

[0007] A compound tea withering machine air duct system includes a multi-layer structure arranged from high to low, the structure is evenly divided into several withering areas from front to back, each withering area is provided with a fan, or the vertically arranged multi-layer withering areas share the same fan, the mesh belt of the withering area includes an upper partition and a lower partition, an inclined partition is arranged between the upper and lower partitions, and the fan supplies air from the side of the space between the upper and lower partitions, so that the wind travels along the upper surface of the inclined partition.

[0008] The air passage system of the compound tea withering machine is provided with a plurality of evenly arranged partitions from the front end to the rear end, and fans are installed between the partitions.

[0009] When the vertically arranged multi-layer withering area shares the same fan, the fan supplies air to each layer of the withering area through a connecting air duct, and a connecting pipe is arranged at the air inlet of the upper baffle and the lower baffle, one side of the connecting pipe is connected with the connecting air duct, and the other end is connected with the obliquely arranged baffle.

[0010] The upper surface of the upper baffle is used for placing tea leaves, and the surface is provided with uniformly arranged ventilation holes.

[0011] The adjacent withering areas are separated by side baffles.

[0012] The height between the adjacent frames gradually increases from high to low.

[0013] The front end and the rear end of the mesh belt are respectively provided with a driving part and a driven part, the driving part comprises two coaxially arranged driving wheels, the driven part comprises two coaxially arranged driven wheels, a rotating wheel is arranged between the driving part and the driven part, rotating gears are arranged at both ends of the rotating wheel, and the rotating gears are driven by a chain between the driving wheels and the driven wheels.

[0014] The bottom of the wind path system of the multi-layer tea withering machine is provided with a power wheel, the power wheel is driven by a motor, and the power wheel is connected with the driving wheels of the driving parts of each layer of mesh belt through a transmission belt.

[0015] The left and right sides of the mesh belt from the front end to the rear end are both provided with slides, coaxial rollers are arranged outside the rotating gears, and the rollers are located on the slides.

[0016] The surface of the rotating wheel is sawtooth-shaped.

[0017] The wind path system of the multi-layer tea withering machine has the advantages of simple structure, reasonable design, high working efficiency, small occupied area, saved manpower, uniform penetration of the wind through the leaf layer, and uniform withering degree. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the wind path system of the multi-layer tea withering machine;

[0019] Figure 2 is a top view schematic view of the wind path system of the multi-layer tea withering machine;

[0020] Figure 3 is a partial structure enlarged schematic view of the wind path system of the multi-layer tea withering machine;

[0021] Figure 4 is a wind path schematic view of the fan;

[0022] Figure 5 is a single layer schematic view of the wind path system of the multi-layer tea withering machine;

[0023] Figure 6 is a single layer top view schematic diagram of the wind path system of the compound tea withering machine;

[0024] Figure 7 is a schematic diagram of the cooperation of the slide and the roller. DETAILED DESCRIPTION

[0025] As shown in Figure 1 and Figure 2 , the wind path system of the compound tea withering machine adopts a three-layer structure, which is a first layer frame 100, a second layer frame 200 and a third layer frame 300 respectively. Each layer is placed with tea by a mesh belt 1. The height between adjacent layers gradually increases from high to low. The height between the first layer frame 100 and the second layer frame 200 is less than the height between the second layer frame 200 and the third layer frame 300.

[0026] The wind path system of the compound tea withering machine is provided with a plurality of uniformly arranged fences 400 from front to back. A fan 2 is installed between adjacent fences 400. The two sides of the fan 2 are fixed on the fences respectively. Each layer is divided into equal withering areas 500 by the fences 400. Similarly, the withering areas 500 of each layer are also corresponded from top to bottom, so that the three withering areas in the same vertical direction share the same fan 2.

[0027] As shown in Figure 4 , the fan 2 supplies air to the mesh belt 1 of each layer through a connecting air duct. Three connecting air ducts are provided. The first air duct 3 is connected to the first layer frame 100, the second air duct 4 is connected to the second layer frame 200, and the third air duct 5 is connected to the third layer frame 300. The outside of the three air ducts is covered by an outer shell.

[0028] The fan 2 can supply air to the three vertically arranged withering areas 500, or one fan 2 can be provided for each withering area 500. In Figure 5 , in order to more clearly show the single layer structure, the fan 2 only supplies air to one withering area. The mesh belt 1 includes an upper baffle 6 and a lower baffle 7. The upper baffle 6 is used to place tea and is provided with uniformly arranged ventilation holes on the surface. The front and rear sides of the corresponding withering area are surrounded by side baffles. The right side of the upper baffle 6 and the lower baffle 7 is surrounded by an end baffle. The left side of the upper baffle 6 and the lower baffle 7 is provided with a connecting pipe 8 which is connected with the first air duct 3 through the connecting pipe 8.

[0029] The oblique partition plate 10 is arranged obliquely, and its two ends are fixed at the lower left end and the upper right end of the partition plate area respectively. The oblique partition plate 10, the front and rear end side plates and the upper mesh belt 6 form a closed cavity. The space formed in this way makes the wind blown by the connecting pipe 8 travel along the upper surface of the oblique partition plate 10, and the wind is sent to the inside of the cavity through the pipe opening of the connecting pipe 8. The fan 2 is changed from a common centrifugal fan to a turbine type centrifugal fan, which increases the wind pressure and ensures the penetration effect of the wind.

[0030] In combination with Figure 3 , Figure 5 and Figure 6 , the front and rear ends of the mesh belt are respectively provided with a driving part and a driven part. At one end of the driving part, the first layer frame 100 is provided with a first driving wheel 101, the second layer frame 200 is provided with a second driving wheel 201, and the third layer frame 300 is provided with a third driving wheel 301. The bottom of the complex tea withering machine air path system is provided with a power wheel 50. The power wheel 50, the first driving wheel 101, the second driving wheel 201 and the third driving wheel 301 are located on the same side, and the power wheel 50 drives the first driving wheel 101, the second driving wheel 201 and the third driving wheel 301 through a transmission belt respectively.

[0031] Taking one of the layer frames as an example, the opposite side of the first driving wheel 101 is provided with a first concentric wheel 102. The first driving wheel 101 and the first concentric wheel 102 are coaxially arranged and rotatably fixed at the front end of the first layer frame 100 through bearings. A coaxial first driven wheel and a second concentric wheel are arranged at the rear end of the first layer frame 100 and rotatably fixed at the rear end of the first layer frame 100 through bearings. The first driving wheel 101 and the first driven wheel are connected by a first chain 9, and the first concentric wheel and the second concentric wheel are connected by a second chain.

[0032] As shown in Figure 7 , a rotating wheel 103 is arranged above the mesh belt. The surface of the rotating wheel 103 is sawtooth-shaped. When the rotating wheel 103 rotates above the mesh belt, it flattens and turns over the tea placed on the mesh belt, making it uniform. The two ends of the rotating wheel 103 are connected to the first chain 9 and the second chain through rotating gears 104. Through the forward transmission of the first chain 9 and the second chain, the rotating gears 104 are driven to rotate, and in turn the rotating wheel 103 is driven to rotate from the front end of the mesh belt to the rear end. When it rotates in the opposite direction, it drives the rotating wheel 103 to rotate from the rear end of the mesh belt to the front end.

[0033] In order to make the rotating wheel 103 move stably, the rotating gear outside of both ends of the rotating wheel 103 is provided with a roller 105, the roller 105 and the rotating gear 104 are coaxially arranged, the slide 106 is arranged at the front and back ends of the net belt, the roller 105 travels or retreats along the slide 106, and the rotating wheel 103 travels along a straight line through the support effect of the slide 106.

[0034] When the fresh leaves are laid on the net belt of the withering machine, the turbine type centrifugal fan 2 is started, the air volume is variable frequency adjustable, when the air blows to the bottom of the upper partition plate 6 of the net belt, due to the effect of the inclined partition plate 10 and the peripheral baffle, the air can only penetrate the leaf layer upwards, and the uniform withering purpose is achieved.

[0035] The present application solves the problem of uneven moisture of traditional compound withering machine, ensures the stable and uniform product quality, and is important for the popularization of compound withering machine.

Claims

1. A composite tea withering machine air duct system, characterized by: The multiple-layer frame is arranged from high to low, and the frame is evenly divided into several withering areas from the front end to the rear end. Each withering area is arranged with a fan, or the multiple vertically arranged withering areas share the same fan. The adjacent withering areas are separated by side baffles. The net belt of the withering area comprises upper and lower baffles, and the inclined baffle is arranged between the upper and lower baffles. The upper surface of the upper baffle is used for placing tea leaves, and is provided with uniformly arranged ventilation holes. The inclined baffle is arranged obliquely, and the two ends thereof are fixed at the lower left end and the upper right end of the baffle area respectively. The inclined baffle, the front and rear end side baffles and the upper net belt form a closed cavity. The fan supplies air from the side of the space between the upper and lower baffles, so that the air travels along the upper surface of the inclined baffle. When the multiple vertically arranged withering areas share the same fan, the fan supplies air to each withering area through the connecting air duct. The connecting pipe is arranged at the air inlet of the upper and lower baffles, one side of the connecting pipe is connected with the connecting air duct, and the other end thereof is connected with the inclined baffle below. The height between the adjacent frames gradually increases from high to low. The front and rear ends of the net belt are respectively provided with a driving part and a driven part. The driving part comprises two coaxially arranged driving wheels, and the driven part comprises two coaxially arranged driven wheels. A rotating wheel is arranged between the driving part and the driven part. The two ends of the rotating wheel are provided with rotating gears. The rotating gears are driven by the chain between the driving wheel and the driven wheel. The upper side of the net belt is provided with a rotating wheel. The surface of the rotating wheel is sawtooth-shaped. When the rotating wheel rotates above the net belt, it flattens and turns the tea leaves placed on the net belt, so that the tea leaves are evenly distributed. The two ends of the rotating wheel are respectively connected with first and second chains through rotating gears. The rotating gears are driven to rotate through the forward transmission of the first and second chains, and then the rotating wheel is driven to rotate from the front end to the rear end of the net belt. When the rotating wheel is reversely rotated, it is driven to rotate from the rear end to the front end of the net belt.

2. The compound withering machine air path system according to claim 1, characterized in that: The wind path system of the multiple tea withering machine is provided with multiple evenly arranged barriers from the front end to the rear end.

3. The compound withering machine air path system according to claim 1, characterized in that: The bottom of the wind path system of the multiple tea withering machine is provided with a power wheel. The power wheel is driven by a motor. The power wheel is connected with the driving wheels of the driving parts of each layer of net belt through a transmission belt.

4. The compound withering machine air path system according to claim 1, characterized in that: The left and right sides of the net belt from the front end to the rear end are provided with slides. The outer side of the rotating gear is provided with a coaxial roller. The roller is located on the slide.

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