Multi-stage drying equipment for tea leaves

Abstract

The invention relates to the technical field of tea leaf drying, in particular to multi-stage drying equipment for tea leaves. A main pipe is arranged on the drying cabinet; a cabinet door is mounted on the drying cabinet; a plurality of supporting blocks are fixedly connected into the drying cabinet. Air is fed into the main pipe in the drying cabinet through the fan arranged outside the drying cabinet, and the fed air enters the ventilation frames through the air inlet grooves in the ventilation frames and then is blown out of the gaps of the heating wires, so that hot air generated by the heating wires penetrates through the gaps between the tea leaves through the air, and then the tea leaves are uniformly dried; water vapor generated by the tea leaves is discharged through the air suction opening in each layer of drying cabinet, so that the situation that water vapor generated by the lower-layer tea leaves is absorbed by the upper-layer tea leaves, and consequently the tea leaves are dried unevenly is avoided; and the separation net is used for blocking tea scraps, so that the tea scraps are prevented from flying everywhere in the drying cabinet and polluting the drying cabinet.

Description

Technical Field

[0001] The invention relates to the technical field of tea drying, in particular to a multi-stage drying device for tea. Background Art

[0002] In the existing tea drying box design, the heating component is usually set at the bottom of the drying box, and the exhaust port is located at the top of the drying box, so that the water vapor generated during the tea drying process is sucked from the top through convection and discharged out of the drying box. However, in the process of sucking water vapor, the water vapor generated by the lower layer of tea leaves will be carried to the upper layer by the rising air flow, causing the upper layer of tea leaves to absorb part of the water vapor, thereby reducing the drying effect of the upper layer of tea leaves.

[0003] In addition, the tea leaves on the lower layer are closer to the heating element and are easily affected by higher temperatures, resulting in over-drying. The tea leaves on the upper layer are far away from the heating element and have a lower temperature, resulting in poor drying effect and more residual moisture. This causes uneven heating and dehydration of the tea leaves during the entire drying process, ultimately affecting the quality of the tea leaves. Summary of the invention

[0004] In order to overcome the disadvantage that the water vapor generated by the lower layer of tea leaves will be brought to the upper layer by the rising air flow, causing the upper layer of tea leaves to absorb part of the water vapor and affecting the drying effect of the upper layer of tea leaves; in addition, since the lower layer of tea leaves are closer to the heating component, they are easily affected by higher temperatures, resulting in over-drying; since the upper layer of tea leaves are far away from the heating component and have a lower temperature, the drying effect is poor, resulting in more residual moisture, making the tea leaves unevenly heated and dehydrated, affecting the quality of the tea leaves, the present invention provides a multi-stage drying device for tea leaves.

[0005] The technical implementation scheme of the present invention is: a multi-stage drying equipment for tea, including a drying cabinet; a main pipe is arranged on the drying cabinet; a cabinet door is installed on the drying cabinet; a plurality of support blocks are fixedly connected in the drying cabinet; it also includes a ventilation frame, a heating wire, a protective frame and a receiving assembly; a plurality of ventilation frames are fixedly connected in the drying cabinet; an air inlet slot is opened on the right side of each ventilation frame, and each air inlet slot is connected to the main pipe on the drying cabinet; a heating wire is installed on each ventilation frame; a protective frame for receiving fallen tea debris is installed on each ventilation frame; a plurality of V-shaped pieces are arranged on each protective frame, and an air outlet is formed between two adjacent V-shaped pieces on the left and right; a receiving assembly for receiving dripping juice of fruit tea is connected to the support block on the drying cabinet.

[0006] Furthermore, the receiving component includes a winding roller and flannel cloth; a winding roller is installed in the support block on the right side of each drying cabinet; flannel cloth is rolled up on each winding roller; and a plurality of air outlet holes are opened on each flannel cloth.

[0007] Furthermore, an isolation net is also included; an isolation net is arranged on the upper side of each protective frame.

[0008] Furthermore, a shielding piece is also included; a shielding piece is movably connected to the air outlet on each protective frame.

[0009] Furthermore, it also includes a moving frame, a fixing bar and a suction cup; a plurality of moving frames are arranged on the cabinet door of the drying cabinet; a fixing bar is slidably connected to each moving frame; and a plurality of suction cups are installed on each fixing bar.

[0010] Furthermore, it also includes handles; each movable frame is fixedly connected with two handles.

[0011] Furthermore, it also includes a condensation duct and an air outlet piece; a plurality of condensation ducts are arranged on the left side of the drying cabinet; a first exhaust frame is opened at the upper end of the drying cabinet; a plurality of air outlet pieces are connected to the first exhaust frame; each ventilation frame is provided with an air outlet frame and a second air exhaust frame, and the air outlet frame is located on the upper side of the second exhaust frame; each air outlet frame is connected to the main pipe, and each second exhaust frame is connected to the corresponding condensation duct; each second exhaust frame is connected to a plurality of air outlet pieces.

[0012] Furthermore, the air outlets on the two upper and lower adjacent air outlet members and the protective frame are arranged in a staggered manner.

[0013] Furthermore, it also includes a baffle and a filter; each condenser is connected to the drying cabinet through an air intake port; a baffle is fixedly connected to the air intake port of each drying cabinet; and a filter is arranged on each baffle.

[0014] Furthermore, each baffle is set to a state where the right side is higher and the left side is lower.

[0015] The beneficial effects of the present invention are as follows: the present invention realizes that the wind is sent into the main pipe in the drying cabinet through the fan outside the drying cabinet, and the sent wind enters the ventilation frame through the air inlet slot on each ventilation frame, and then blows out from the gap of the heating wire, so that the hot air generated by the heating wire passes through the gap between the tea leaves through the wind, and then the tea leaves are evenly dried, and the water vapor generated by the tea leaves is discharged through the air suction port on each layer of the drying cabinet, so as to prevent the water vapor generated by the tea leaves in the lower layer from being absorbed by the tea leaves in the upper layer, thereby causing uneven drying of the tea leaves; The tea debris is blocked by the isolation net, so as to prevent the tea debris from flying around in the drying cabinet and polluting the drying cabinet; The air outlet is closed by the shielding piece on the protective frame to prevent debris from entering the protective frame through the air outlet. When the drying cabinet is in operation, the shielding piece will be blown by the ventilation frame to flip it, as shown in the figure, so as to dry the tea leaves; The worker pulls the flannel on the winding roller, so that the magnet on the flannel is adsorbed on another supporting block on the same layer, fixing the flannel, and then intercepting the dripping juice through the flannel to prevent the dripping juice from dripping on the heating wire or the protective frame and being difficult to clean. The wind blown out from the protective frame will pass through the air outlet on the flannel and blow to the tea on the receiving tray for normal drying. By making the baffle higher on the right and lower on the left, the air on the lower side of the ventilation frame is sucked in, so that the air intake port is not facing the tea leaves on the receiving tray, preventing the tea leaves from being sucked into the air intake port. At the same time, some tea debris is intercepted by the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the multi-stage drying equipment for tea leaves of the present invention; Figure 2 This is a state diagram of the cabinet door of the present invention when it is opened; Figure 3 An exploded view of the ventilation frame, heating wire, protective frame, flannel cloth and receiving tray of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle; Figure 6 This is a state diagram of the shielding sheet of the present invention when it is opened; Figure 7 It is a schematic diagram of the three-dimensional structure of the combination of the movable frame, the fixed bar and the suction cup of the present invention; Figure 8 The figure is a three-dimensional structural diagram of the condenser, the gas outlet, the baffle and the filter assembly of the present invention.

[0017] In the above drawings: 1-drying cabinet, 101-ventilation frame, 102-heating wire, 103-protective frame, 104-shielding sheet, 105-winding roller, 106-flannel, 201-movable frame, 202-fixed bar, 203-suction cup, 301-condenser, 302-air outlet, 401-baffle, 402-filter, 1001-cabinet door, 1002-main pipe, 1003-support block, 1004-first exhaust frame, 1005-air suction port, 10101-air inlet slot, 10102-air outlet frame, 10103-second exhaust frame, 10301-V-shaped sheet, 10302-air outlet, 10303-isolation net, 10601-air outlet, 20101-handle, 10-receiving tray. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1 A multi-stage drying device for tea leaves, such as Figure 1-Figure 8 As shown, it includes a drying cabinet 1; a main pipe 1002 is arranged on the right side of the drying cabinet 1; a cabinet door 1001 is installed on the front side of the drying cabinet 1; twelve support blocks 1003 are fixedly connected in the drying cabinet 1; It also includes a ventilation frame 101, a heating wire 102, a protective frame 103 and a receiving assembly; six ventilation frames 101 are fixedly connected in the drying cabinet 1; an air inlet slot 10101 is opened on the right side of each ventilation frame 101, and each air inlet slot 10101 is connected to the main pipe 1002 on the drying cabinet 1; a heating wire 102 is installed on each ventilation frame 101; a protective frame 103 is installed on each ventilation frame 101; each protective frame 103 is provided with a plurality of V-shaped pieces 10301, and an air outlet 10302 is formed between two adjacent V-shaped pieces 10301 on the left and right; a receiving assembly is connected to the support block 1003 on the drying cabinet 1.

[0020] The receiving component includes a winding roller 105 and a flannel 106; a winding roller 105 is installed in the support block 1003 on the right side of each drying cabinet 1; a flannel 106 is rolled up on each winding roller 105, and the flannel 106 receives the juice dropped during the drying of the fruit tea, thereby preventing the dropped fruit tea juice from contaminating the drying cabinet 1; each flannel 106 is provided with a plurality of air outlet holes 10601.

[0021] It also includes an isolation net 10303; an isolation net 10303 is set on the upper side of each protection frame 103.

[0022] It also includes a shielding piece 104; a shielding piece 104 is hinged at the air outlet 10302 on each protective frame 103; when the drying cabinet 1 is not working, the air outlet 10302 is closed by the shielding piece 104 to prevent dust from entering the ventilation frame 101.

[0023] It also includes a moving frame 201, a fixing bar 202 and a suction cup 203; six moving frames 201 are arranged on the cabinet door 1001 on the drying cabinet 1; each moving frame 201 is slidably connected to a fixing bar 202; and each fixing bar 202 is installed with a plurality of suction cups 203.

[0024] It also includes a handle 20101; in order to facilitate workers to pull out the moving frame 201, each moving frame 201 is bolted with two handles 20101.

[0025] The worker evenly spreads the tea leaves on the receiving tray 10, then opens the cabinet door 1001 on the drying cabinet 1, puts the receiving tray 10 into the drying cabinet 1, and supports it through the support block 1003 on the drying cabinet 1. After the drying cabinet 1 is filled with the receiving tray 10, the worker closes the cabinet door 1001 and starts the drying cabinet 1, so that the heating wire 102 under each receiving tray 10 dries the tea leaves on the receiving tray 10. In order to improve the drying effect of the heating wire 102 on the tea leaves, the air is sent to the drying cabinet 1 through the fan outside the drying cabinet 1. The air enters the main pipe 1002 in the drying cabinet 1, and the air supplied will enter the ventilation frame 101 through the air inlet slot 10101 on each ventilation frame 101, and then be blown out from the gaps in the heating wire 102, so that the hot air generated by the heating wire 102 passes through the gaps between the tea leaves through the wind, and then the tea leaves are evenly dried. The water vapor generated by the tea leaves will be discharged through the air intake port 1005 on each layer of the drying cabinet 1, so as to prevent the water vapor generated by the lower layer of tea leaves from being absorbed by the upper layer of tea leaves, which will cause uneven drying of the tea leaves.

[0026] During the tea drying process, tea debris will fall from the receiving tray 10, thereby contaminating the drying cabinet 1 and increasing the difficulty of cleaning the drying cabinet 1. Therefore, the wind blown out by the ventilation frame 101 will blow toward the tea leaves through the air outlet 10302 on the protection frame 103, and the fallen tea debris will fall on the V-shaped sheet 10301 on the protection frame 103 for collection. At the same time, the tea debris can be blocked by the isolation net 10303, thereby preventing the tea debris from being trapped in the drying cabinet 1. In order to prevent debris from entering the protective frame 103 through the air outlet 10302 when the drying cabinet 1 is not in operation, thereby polluting the protective frame 103, the air outlet 10302 is closed by the shielding sheet 104 on the protective frame 103 when the drying cabinet 1 is not in operation, thereby preventing debris from entering the protective frame 103 through the air outlet 10302. When the drying cabinet 1 is in operation, the shielding sheet 104 is blown by the ventilation frame 101 to flip over. Figure 6 As shown, the tea leaves are dried.

[0027] When the drying cabinet 1 is drying fruit tea, such as small green oranges, the small green oranges will produce oily juice during drying. The juice is also sticky. If it falls on the heating wire 102 or the protective frame 103, it will be difficult to clean. Therefore, when the drying cabinet 1 is drying some teas that will produce juice, the worker pulls the flannel 106 on the winding roller 105, so that the magnet on the flannel 106 is adsorbed on another supporting block 1003 on the same layer, and the flannel 106 is fixed, and then the dripping juice is intercepted by the flannel 106 to prevent the dripping juice from dripping. Juice dripping on the heating wire 102 or the protective frame 103 is difficult to clean, and the wind blown out from the protective frame 103 will pass through the air outlet holes 10601 on the flannel 106, and blow toward the tea on the receiving tray 10 for normal drying. It should be noted that the fluff on the flannel 106 will cover the air outlet holes 10601 on the flannel 106. Therefore, some juice dripping on the air outlet holes 10601 will be absorbed by the fluff covering the air outlet holes 10601, and the wind blown out from the protective frame 103 will blow toward the tea on the receiving tray 10 through the gaps between the fluff.

[0028] After the tea leaves have been dried for a certain period of time, they need to be turned over so that the tea leaves are dried more evenly. In practice, when the tea leaves are turned over, the cabinet door 1001 on the drying cabinet 1 needs to be opened, so as to pull out the receiving tray 10 layer by layer and turn the tea leaves over. This will cause the heat in the drying cabinet 1 to be lost quickly. After the tea leaves are turned over, it takes a certain amount of time to reach the temperature for drying the tea leaves. This not only wastes time, but also leads to a waste of energy. Therefore, when the tea leaves need to be turned over, the worker presses the fixing bar 20 backwards to turn the tea leaves over. 2. Make the suction cup 203 contact with the receiving tray 10. As the fixing bar 202 continues to move, the suction cup 203 is squeezed, so that the receiving tray 10 is fixed by the suction cup 203. Then the worker holds the handle 20101 on the movable frame 201 to pull the movable frame 201 forward, and then pulls the receiving tray 10 out of the drying cabinet 1 to turn the tea leaves. After turning, the worker pushes the receiving tray 10 back to the receiving tray 10 for drying, thereby avoiding the entire cabinet door 1001 from being opened, resulting in rapid heat loss and wasting energy for re-preheating.

[0029] Example 2 On the basis of Example 1, Figure 1-Figure 3 and Figure 8As shown, it also includes a condensation duct 301 and an air outlet piece 302; five condensation ducts 301 are arranged on the left side of the drying cabinet 1; a first exhaust frame 1004 is opened at the upper end of the drying cabinet 1; a plurality of air outlet pieces 302 are connected to the first exhaust frame 1004; each ventilation frame 101 is provided with an air outlet frame 10102 and a second air exhaust frame 10103, and the air outlet frame 10102 is located on the upper side of the second air exhaust frame 10103; each air outlet frame 10102 is connected to the main pipe 1002, and each second air exhaust frame 10103 is connected to the corresponding condensation duct 301; each second air exhaust frame 10103 is connected to a plurality of air outlet pieces 302.

[0030] The two upper and lower adjacent air outlet members 302 and the air outlets 10302 on the protection frame 103 are arranged in a staggered manner.

[0031] It also includes a baffle 401 and a filter 402; each condenser 301 is connected to the drying cabinet 1 through the air suction port 1005; a baffle 401 is fixedly connected to the air suction port 1005 on each drying cabinet 1; and a filter 402 is arranged on each baffle 401.

[0032] In order to better block tea debris, each baffle 401 is set to be higher on the right and lower on the left.

[0033] Through the layered design of the drying cabinet 1, the drying cabinet 1 can dry a variety of different types of tea at the same time. However, the petals of some scented teas are tightly connected, such as chrysanthemum tea, which results in poor drying effect. Therefore, after the air containing water vapor is sucked into the air intake port 1005, the water vapor will be removed through the condenser 301, and the air without water vapor will be discharged into the second exhaust frame 10103 on the upper ventilation frame 101, and then discharged from the air outlet piece 302 on the second exhaust frame 10103, so as to dry the upper side of the tea on the receiving tray 10, thereby improving the drying effect. At the same time, this process can also prevent the loss of the tea's own aroma and improve the quality of the tea.

[0034] It should be noted that when the air containing water vapor is sucked into the air inlet 1005, the baffle 401 is in a state of being higher on the right and lower on the left, thereby sucking the air under the ventilation frame 101, so that the air inlet 1005 is not facing the tea leaves on the receiving tray 10, preventing the tea leaves from being sucked into the air inlet 1005, and at the same time, some tea debris is intercepted by the filter 402. At the same time, the tea leaves on the receiving tray 10 can be turned over to a certain extent by staggering the air outlets 302 and the air outlets 10302 on the protective frame 103 adjacent to each other.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A multi-stage drying device for tea leaves, comprising a drying cabinet (1); a main pipe (1002) is provided on the drying cabinet (1); a cabinet door (1001) is installed on the drying cabinet (1); a plurality of support blocks (1003) are fixedly connected in the drying cabinet (1); the characteristics are: The invention also comprises a ventilation frame (101), a heating wire (102), a protective frame (103) and a receiving assembly; a plurality of ventilation frames (101) are fixedly connected in the drying cabinet (1); an air inlet slot (10101) is provided on the right side of each ventilation frame (101), and each air inlet slot (10101) is connected to a main pipe (1002) on the drying cabinet (1); a heating wire (102) is installed on each ventilation frame (101); a protective frame (103) for receiving fallen tea debris is installed on each ventilation frame (101); a plurality of V-shaped pieces (10301) are provided on each protective frame (103), and an air outlet (10302) is formed between two adjacent V-shaped pieces (10301) on the left and right; and a receiving assembly for receiving dripping fruit tea juice is connected to the support block (1003) on the drying cabinet (1).

2. A multi-stage drying device for tea leaves according to claim 1, characterized in that: The receiving assembly comprises a winding roller (105) and a flannel (106); a winding roller (105) is installed and rotated in a support block (1003) on the right side of each drying cabinet (1); a flannel (106) is wound on each winding roller (105); and each flannel (106) is provided with a plurality of air outlet holes (10601).

3. A multi-stage drying device for tea leaves according to claim 1, characterized in that: It also includes an isolation net (10303); an isolation net (10303) is provided on the upper side of each protection frame (103).

4. A multi-stage drying device for tea leaves according to claim 3, characterized in that: It also includes a shielding sheet (104); the air outlet (10302) on each protective frame (103) is movably connected to a shielding sheet (104).

5. A multi-stage drying device for tea leaves according to claim 2, characterized in that: It also comprises a movable frame (201), a fixed bar (202) and a suction cup (203); a plurality of movable frames (201) are arranged on the cabinet door (1001) on the drying cabinet (1); each movable frame (201) is slidably connected to a fixed bar (202); and each fixed bar (202) is installed with a plurality of suction cups (203).

6. A multi-stage drying device for tea leaves according to claim 5, characterized in that: It also includes handles (20101); each movable frame (201) is fixedly connected to two handles (20101).

7. A multi-stage drying device for tea leaves according to claim 5, characterized in that: The drying cabinet (1) further comprises a condensing pipe (301) and an air outlet member (302); a plurality of condensing pipes (301) are arranged on the left side of the drying cabinet (1); a first exhaust frame (1004) is provided at the upper end of the drying cabinet (1); the first exhaust frame (1004) is connected to the plurality of air outlet members (302); each ventilation frame (101) is provided with an air outlet frame (10102) and a second air outlet frame (10103), and the air outlet frame (10102) is located on the upper side of the second air outlet frame (10103); each air outlet frame (10102) is connected to the main pipe (1002), and each second air outlet frame (10103) is connected to the corresponding condensing pipe (301); and each second air outlet frame (10103) is connected to the plurality of air outlet members (302).

8. A multi-stage drying device for tea leaves according to claim 7, characterized in that: The two upper and lower adjacent air outlet members (302) and the air outlets (10302) on the protection frame (103) are arranged in a staggered manner.

9. A multi-stage drying device for tea leaves according to claim 7, characterized in that: It also includes a baffle (401) and a filter (402); each condenser tube (301) is connected to the drying cabinet (1) via an air suction port (1005); a baffle (401) is fixedly connected to the air suction port (1005) on each drying cabinet (1); and a filter (402) is provided on each baffle (401).

10. A multi-stage drying device for tea leaves according to claim 9, characterized in that: Each baffle (401) is arranged in a state where the right side is higher and the left side is lower.

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