A tea drying device suitable for tea processing
By using a combination structure of an upper dispersing cone and a lower converging cone in the tea drying device, along with vibration and ventilation components, the problems of tea accumulation and uneven hot air flow are solved, achieving uniform and efficient drying of tea.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN HONGYANSHAN ZAOZHICHUN TEA CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-31
AI Technical Summary
Existing tea drying equipment suffers from problems such as tea accumulation at the feeding port, short air-holding time, poor hot air flow, and insufficient drying uniformity.
It adopts a combination structure of upper dispersing cone and lower converging cone, combined with vibration and ventilation components, to extend the tea leaves' air time, ensuring that the tea leaves are evenly dispersed and fall, and to improve drying efficiency through hot air and dehumidification components.
It significantly improves the tea's dwell time and hot air flow effect, avoids accumulation, ensures uniform heating of tea, and improves drying efficiency and quality.
Smart Images
Figure CN224580632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tea processing equipment, and more specifically, to a tea drying device suitable for tea processing. Background Technology
[0002] In the tea processing process, drying is a key step that determines the quality of tea. Its core requirement is to achieve uniform evaporation of moisture from the tea leaves by reasonably controlling the temperature, wind speed and the time the tea leaves are suspended in the air, while preserving the aroma and nutrients of the tea leaves.
[0003] A search revealed that Chinese patent application number 202321983754.4 discloses "a reciprocating drying device for tea production, comprising a drying box, wherein multiple horizontal reciprocating tea conveying devices are arranged at staggered intervals along the vertical direction inside the drying box, with the upper-layer horizontal reciprocating tea conveying device conveying tea to the adjacent lower-layer horizontal reciprocating tea conveying device; multiple sets of heating mechanisms are arranged at intervals directly above each layer of horizontal reciprocating tea conveying devices, and the number of heating mechanisms increases from top to bottom, with the heating mechanisms arranged in a trapezoidal shape inside the drying box. This utility model has a simple structure and reasonable design. Through the arrangement of this device, tea is reciprocated on each layer of horizontal reciprocating tea conveying devices, and the heating mechanisms dry the tea, ensuring the continuity of tea processing, improving tea processing efficiency, and effectively improving tea processing quality. The device has a compact structure, small footprint, and is suitable for large-scale, continuous processing of high-quality tea, and its simple construction and low cost" still have the following drawbacks: (1) When adding tea leaves through the feeding port, they cannot be dispersed in time, which can easily lead to accumulation and reduce the subsequent drying effect; (2) The tea leaves fall quickly in the drying chamber, have a short dwell time, and the hot air flow effect is poor. The tea leaf accumulation area is prone to the phenomenon of "dry outside and wet inside", resulting in insufficient drying uniformity.
[0004] Therefore, we have made improvements to this and proposed a tea drying device suitable for tea processing. Utility Model Content
[0005] The purpose of this invention is to provide a tea drying device suitable for tea processing, so as to achieve the following objectives: increase the dwell time of tea in the drying chamber, ensure the hot air flow drying function, and at the same time ensure that the tea is evenly dispersed when falling, avoiding material accumulation.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: A tea drying device suitable for tea processing is proposed to improve the above-mentioned problems.
[0007] The present invention is as follows: The dryer includes a drying tank, a feed hopper mounted on top of the drying tank, and a discharge port mounted at the center of the bottom of the drying tank. The inner wall of the drying tank is fitted with an electric heating element. The dryer also includes: A dehumidification assembly, which is mounted on top of the drying tank; A material discharge retention component is installed inside the drying tank. The component includes an upper dispersing cone plate mounted on the inner wall of the top of the drying tank via a support rod. An upper fixing ring is fixedly connected to the outer wall of the upper dispersing cone plate via a connecting rod. The upper fixing ring is slidably connected to the inner wall of the drying tank. A lower fixing ring is slidably connected to the inner wall of the drying tank. A vibration component connects the upper and lower fixing rings. A lower converging cone plate is rotatably connected to the inner wall of the lower fixing ring. Both the upper dispersing cone and the lower converging cone have circular holes in their centers. A sealing block is installed inside the circular hole of the upper dispersing cone. The surface of the upper dispersing cone gradually expands in a cone shape from the center to the edge, while the surface of the lower converging cone gradually converges in a cone shape from the edge to the center. Both the upper dispersing cone and the lower converging cone have evenly distributed ventilation holes. The outer diameter of the upper dispersing cone is smaller than the outer diameter of the lower converging cone. The material discharge retention component is set in 3-5 sets along the vertical direction via connecting rods. A ventilation assembly is installed on the outer wall of the drying tank near the bottom end for introducing drying gas into the bottom of the drying tank.
[0008] As a preferred technical solution of this utility model, the ventilation component includes a transfer box installed on the outer side wall of the bottom end of the drying tank. The inner cavity of the transfer box is equipped with evenly distributed electric heating rods. A blower is fixedly connected to the outer side wall of the transfer box. A blower pipe is connected between the air outlet of the blower and the air inlet of the transfer box. A conveying pipe is connected between the air outlet of the transfer box and the bottom of the drying tank.
[0009] As a preferred technical solution of this utility model, the tops of both the upper dispersing cone and the lower converging cone are fixedly connected with uniformly distributed dispersing needles.
[0010] As a preferred technical solution of this utility model, the vibration assembly includes a vibration motor fixedly installed on the top of the lower fixed ring, and a spring is fixedly connected between the lower fixed ring and the upper fixed ring.
[0011] As a preferred technical solution of this utility model, the dehumidification assembly includes a dehumidification pipe installed on the top of the drying tank, and a dehumidification box fixedly installed on the outer wall of the drying tank is fixedly connected to the end of the dehumidification pipe away from the drying tank. An exhaust fan is installed at the air outlet end of the dehumidification box.
[0012] As a preferred technical solution of this utility model, the outer wall of the drying tank is provided with a water-cooling jacket, and the bottom of the transfer box is fixedly connected with evenly distributed support legs.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In the solution of this utility model: 1. By using the upper and lower conical discs of 3-5 sets of material discharge and retention components, the path of the tea leaves is extended during the process of the upper dispersing conical disc unfolding and falling and the lower gathering conical disc gathering and accumulating. The vibration component also causes the tea leaves to fall slowly, significantly increasing the air time and ensuring thorough drying. 2. Ventilation holes are provided in both the upper dispersing cone and the lower converging cone. Together with the hot air introduced by the ventilation component and the heat from the electric heating tube, a through-flow hot air channel is formed from the bottom to the top. The tea leaves are fully in contact with the hot air during the falling process and are heated evenly. 3. The synergistic effect of the cone-shaped structure of the upper dispersing cone, the dispersing needles, and the vibration components can effectively break up tea clumps and prevent feed accumulation. At the same time, the gathering design of the lower gathering cone ensures that the tea leaves fall evenly. 4. The dehumidification component accelerates the removal of moisture through the exhaust fan, preventing moisture circulation in the chamber from causing the tea leaves to absorb moisture. Combined with the hot air supplement from the ventilation component, it further improves the drying efficiency. Attached Figure Description
[0014] Figure 1 A schematic diagram of the overall structure of the tea drying device for tea processing provided by this utility model; Figure 2 A front view of the tea drying device for tea processing provided by this utility model; Figure 3 A schematic diagram of the material retention component of a tea drying device suitable for tea processing provided by this utility model; Figure 4 A front view of the material retention component of a tea drying device suitable for tea processing provided by this utility model; Figure 5 A cross-sectional structural diagram of the transfer box and drying tank of the tea drying device suitable for tea processing provided by this utility model.
[0015] The image shows: 10. Drying tank; 110. Feed hopper; 120. Discharge port; 130. Heating element; 20. Dehumidification assembly; 210. Exhaust pipe; 220. Exhaust box; 230. Exhaust fan; 30. Material retention assembly; 310. Upper dispersing cone; 320. Upper fixing ring; 330. Lower fixing ring; 340. Lower gathering cone; 350. Sealing block; 360. Ventilation hole; 370. Dispersing needle; 380. Vibration motor; 390. Spring; 40. Ventilation assembly; 410. Transfer box; 420. Heating rod; 430. Blower; 440. Blower pipe; 450. Conveying pipe. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.
[0017] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0020] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This embodiment proposes a tea drying device suitable for tea processing, including a drying tank 10, a feed hopper 110 installed on the top of the drying tank 10, and a discharge port 120 installed at the center of the bottom of the drying tank 10. An electric heating tube 130 is embedded in the inner wall of the drying tank 10. The device also includes: Dehumidification assembly 20 is installed on top of drying tank 10; A material retention assembly 30 is installed inside the drying tank 10. The assembly includes an upper dispersing cone 310 mounted on the inner wall of the top of the drying tank 10 via a support rod. An upper fixing ring 320 is fixedly connected to the outer wall of the upper dispersing cone 310 via a connecting rod. The upper fixing ring 320 is slidably connected to the inner wall of the drying tank 10. A lower fixing ring 330 is slidably connected to the inner wall of the drying tank 10. A vibration assembly is connected between the upper fixing ring 320 and the lower fixing ring 330. The inner wall of the lower fixed ring 330 is rotatably connected to a lower converging cone 340. Both the upper dispersing cone 310 and the lower converging cone 340 have circular holes at their centers. A sealing block 350 is installed inside the circular hole of the upper dispersing cone 310. The surface of the upper dispersing cone 310 gradually expands in a cone shape from the center to the edge, while the surface of the lower converging cone 340 gradually converges in a cone shape from the edge to the center. Both the upper dispersing cone 310 and the lower converging cone 340 have evenly distributed ventilation holes 360 on their surfaces. The outer diameter of the cone disk 310 is smaller than that of the lower gathering cone disk 340. The material retention assembly 30 is set in 3-5 sets along the vertical direction via connecting rods. After tea leaves slide off the edge of the upper dispersing cone disk 310, the lower gathering cone disk 340, with its larger diameter, perfectly catches the falling tea leaves. The lower gathering cone disk 340 has a cone-shaped structure with "high edges and low center." Under vibration, the tea leaves gather towards the central hole, where they are further dispersed by the dispersing needles 370, further extending the retention time. The tea leaves then flow from the lower gathering cone disk... The material falls through the central hole of disc 340 to the next set of material retention components 30, repeating the "dispersion-gathering-falling" process. The retention time can be adjusted by increasing or decreasing the number of components. Hot air passes through the ventilation holes 360 of each set of material retention components in sequence, making full contact with the tea leaves on the upper dispersion cone disc 310 and the lower gathering cone disc 340. At the same time, the electric heating tube 130 provides auxiliary heating, so that a gradient temperature field is formed in the drying tank, with the bottom at 80-100℃ and the top at 60-80℃, matching the process of the tea leaves gradually decreasing in moisture. Ventilation assembly 40 is installed on the outer side wall of the drying tank 10 near the bottom end and is used to introduce drying gas into the bottom of the drying tank 10.
[0021] Reference Figure 1 and Figure 2 The ventilation assembly 40 includes a transfer box 410 installed on the outer wall of the bottom end of the drying tank 10. The inner cavity of the transfer box 410 is equipped with evenly distributed electric heating rods 420. A blower 430 is fixedly connected to the outer wall of the transfer box 410. A blower pipe 440 is connected between the air outlet of the blower 430 and the air inlet of the transfer box 410. A delivery pipe 450 is connected between the air outlet of the transfer box 410 and the bottom of the drying tank 10. In the ventilation assembly 40, the blower 430 sends outside air into the transfer box 410. After being heated by the electric heating rods 420, the air enters the bottom of the drying tank 10 through the delivery pipe 450, forming upward-flowing hot air.
[0022] Reference Figure 3 and Figure 4 The tops of both the upper dispersing cone 310 and the lower converging cone 340 are fixedly connected with evenly distributed dispersing needles 370.
[0023] Reference Figure 3 and Figure 4 The vibration assembly includes a vibration motor 380 fixedly installed on the top of the lower fixed ring 330. A spring 390 is fixedly connected between the lower fixed ring 330 and the upper fixed ring 320. The tea leaves to be dried, with a moisture content of 60-70%, enter the drying tank 10 from the feed hopper 110 and first fall onto the uppermost dispersing cone 310. Since the upper dispersing cone 310 has a cone-shaped structure with a "high center and low edge", and the vibration assembly drives it to vibrate at high frequency, the tea leaves slide towards the edge under the action of gravity and vibration force. At the same time, the dispersing needles 370 on the disc surface puncture the clumps and form a uniform thin layer with a thickness of 3-5 cm.
[0024] Reference Figure 1 and Figure 2 The dehumidification assembly 20 includes a dehumidification pipe 210 installed on the top of the drying tank 10. The end of the dehumidification pipe 210 away from the drying tank 10 is fixedly connected to a dehumidification box 220 fixedly installed on the outer wall of the drying tank 10. An exhaust fan 230 is installed at the air outlet of the dehumidification box 220. The water vapor evaporated from the tea leaves flows upward with the hot air and is drawn by the exhaust fan 230 of the dehumidification assembly 20 to the dehumidification box 220 through the dehumidification pipe 210. After being filtered by the filter screen, it is discharged to ensure that the relative humidity in the drying tank is <50% and to prevent the tea leaves from absorbing moisture. After multiple drying layers, the moisture content of the tea leaves is reduced to 5-7%. Finally, the tea leaves fall from the center hole of the bottom converging cone 340 to the bottom of the drying tank 10 and are discharged at regular intervals through the electric valve of the discharge port 120.
[0025] Reference Figure 1 and Figure 2 The outer wall of the drying tank 10 is provided with a water-cooling jacket, and the bottom of the transfer box 410 is fixedly connected with evenly distributed support legs.
[0026] Specifically, when this tea drying device for tea processing is in operation: tea leaves with a moisture content of 60-70% are fed into the drying tank 10 from the feed hopper 110. They first fall onto the uppermost dispersing cone 310. Since the upper dispersing cone 310 has a cone-shaped structure with a "high center and low edge", and the vibration component drives it to vibrate at high frequency, the tea leaves slide towards the edge under the action of gravity and vibration force. At the same time, the dispersing needles 370 on the disc surface puncture the clumps, forming a uniform thin layer with a thickness of 3-5 cm. After the tea leaves slip off the edge of the upper dispersing cone 310, the lower gathering cone 340, with its larger diameter, catches the falling tea leaves. The lower gathering cone 340 has a cone-shaped structure with "high edges and low center". Under the action of vibration, the tea leaves gather towards the central hole and are dispersed again by the dispersing needle 370, further extending the retention time. The tea leaves fall from the center hole of the lower collecting cone 340 to the next set of material retention components 30, repeating the "disperse-collect-fall" process. The retention time can be adjusted by increasing or decreasing the number of components. In the ventilation assembly 40, the blower 430 sends outside air into the transfer box 410, and after being heated by the electric heating rod 420, it enters the bottom of the drying tank 10 through the delivery pipe 450, forming an upward flow of hot air. Hot air passes through the ventilation holes 360 of each set of material retention components in sequence, and comes into full contact with the tea leaves on the upper dispersing cone 310 and the lower gathering cone 340. At the same time, the electric heating tube 130 provides auxiliary heating, so that a gradient temperature field is formed in the drying tank, with the bottom at 80-100℃ and the top at 60-80℃, matching the process of the tea leaves gradually decreasing in moisture. The moisture evaporated from the tea leaves flows upward with the hot air and is drawn by the exhaust fan 230 of the dehumidification component 20 to the dehumidification box 220 through the dehumidification pipe 210. After being filtered by the filter screen, it is discharged to ensure that the relative humidity in the drying tank is <50% and to prevent the tea leaves from absorbing moisture. After being dried in multiple layers, the moisture content of the tea leaves is reduced to 5-7%. Finally, the tea leaves fall from the center hole of the bottom converging cone 340 to the bottom of the drying tank 10 and are discharged at regular intervals through the electric valve of the discharge port 120.
[0027] All technical features in this embodiment can be freely combined according to actual needs.
[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A tea drying device suitable for tea processing, comprising a drying tank (10), a feed hopper (110) installed on the top of the drying tank (10), and a discharge port (120) installed at the center of the bottom of the drying tank (10), wherein an electric heating tube (130) is embedded in the inner wall of the drying tank (10), characterized in that, Also includes: A dehumidification assembly (20) is mounted on top of the drying tank (10); A material retention assembly (30) is installed in the inner cavity of a drying tank (10). The material retention assembly (30) includes an upper dispersing cone (310) mounted on the inner wall of the top of the drying tank (10) via a support rod. An upper fixing ring (320) is fixedly connected to the outer wall of the upper dispersing cone (310) via a connecting rod. The upper fixing ring (320) is slidably connected to the inner wall of the drying tank (10). A lower fixing ring (330) is slidably connected to the inner wall of the drying tank (10). A vibration assembly is connected between the upper fixing ring (320) and the lower fixing ring (330). A lower gathering cone (330) is rotatably connected to the inner wall of the lower fixing ring (330). 340), the upper dispersing cone (310) and the lower converging cone (340) are both provided with circular holes in their centers. The circular holes of the upper dispersing cone (310) are provided with sealing blocks (350). The surface of the upper dispersing cone (310) gradually expands in a cone shape from the center to the edge. The surface of the lower converging cone (340) gradually converges in a cone shape from the edge to the center. The surfaces of the upper dispersing cone (310) and the lower converging cone (340) are both provided with evenly distributed ventilation holes (360). The outer diameter of the upper dispersing cone (310) is smaller than the outer diameter of the lower converging cone (340). The material discharge retention component (30) is set in 3-5 sets along the vertical direction through connecting rods. Ventilation assembly (40), which is installed on the outer side wall of the drying tank (10) near the bottom, is used to introduce drying gas into the bottom of the drying tank (10).
2. A tea drying apparatus suitable for tea processing as claimed in claim 1, wherein, The ventilation assembly (40) includes a transfer box (410) installed on the outer side wall of the bottom end of the drying tank (10). The inner cavity of the transfer box (410) is equipped with evenly distributed electric heating rods (420). A blower (430) is fixedly connected to the outer side wall of the transfer box (410). A blower pipe (440) is connected between the air outlet of the blower (430) and the air inlet of the transfer box (410). A delivery pipe (450) is connected between the air outlet of the transfer box (410) and the bottom of the drying tank (10).
3. A tea drying apparatus suitable for tea processing as claimed in claim 1, wherein, The tops of the upper dispersing cone (310) and the lower converging cone (340) are both fixedly connected with evenly distributed dispersing needles (370).
4. A tea drying apparatus suitable for tea processing as claimed in claim 1, wherein, The vibration assembly includes a vibration motor (380) fixedly mounted on the top of the lower fixed ring (330), and a spring (390) is fixedly connected between the lower fixed ring (330) and the upper fixed ring (320).
5. A tea drying apparatus suitable for tea processing as claimed in claim 1, wherein, The dehumidification assembly (20) includes a dehumidification pipe (210) installed on the top of the drying tank (10). The end of the dehumidification pipe (210) away from the drying tank (10) is fixedly connected to a dehumidification box (220) fixedly installed on the outer wall of the drying tank (10). An exhaust fan (230) is installed at the air outlet end of the dehumidification box (220).
6. A tea drying device suitable for tea processing according to claim 2, characterized in that, The outer wall of the drying tank (10) is provided with a water-cooled jacket, and the bottom of the transfer box (410) is fixedly connected with evenly distributed support legs.