Box-type tea leaf re-drying machine

Abstract

The invention provides a box-type tea re-drying machine which comprises a box body, a pair of oppositely arranged door bodies are arranged on one side of the box body, two rollers directly facing the two door bodies are further rotationally arranged in the box body, and a plurality of first communicating holes communicating the inside and the outside of the rollers are formed in the side walls of the rollers; the top face of the box body is further provided with two connecting pipes located over the two rollers correspondingly, the two connecting pipes are connected with exhaust fans correspondingly, two air feeders located under the two rollers correspondingly are further arranged below the box body, and two heating assemblies located under the two rollers correspondingly are further fixedly arranged in the box body. Air fed by the air feeder enters the box body, is heated by the corresponding heating assemblies and then upwards makes contact with the corresponding rollers. The problem that in the prior art, small fragments are attached to tea leaves in the re-drying process, and the final taste of the tea leaves is affected is solved.

Description

Technical Field

[0001] The invention relates to the technical field of tea processing equipment, in particular to a box-type tea re-drying machine. Background Art

[0002] Fresh tea leaves can be processed into various types of tea products, such as green tea, black tea, yellow tea, white tea, etc. Their moisture content needs to be processed to a very low level to ensure the quality of the tea. However, the processed tea leaves may absorb moisture during subsequent storage or transportation, resulting in an increase in moisture content, so they need to be re-dried. In the prior art, a re-drying machine (or drying machine) is used to re-dry tea leaves, such as a tea re-drying machine with announcement number CN219741748U, which includes a supporting mechanism, a drum, a heating mechanism, a feeding mechanism and a cleaning component, and the cleaning component includes a motor, a connecting shaft, a positioning sleeve, a connecting sleeve, a bracket, a scraper and a collecting mechanism; after the tea leaves are discharged from the drum, the motor is started, and the output end of the motor drives the connecting shaft to rotate, and the connecting sleeve rotates accordingly, which can drive the scraper on the bracket to rotate accordingly, and the scraper can move on the inner wall of the drum to clean the tea debris remaining in the drum. After cleaning, the tea debris in the drum can be collected and processed by the collecting mechanism, thereby solving the problem that some tea debris in the drum cannot be discharged, resulting in debris mixed in the tea leaves when the tea leaves are re-dried next time, affecting the quality of the tea leaves. In the actual re-drying process, the rotation of the drum causes the tea leaves to tumble inside it, resulting in a certain amount of smaller fragments (smaller than the residual fragments). These fragments may become burnt due to the re-drying and easily adhere to the tea leaves, ultimately affecting the taste of the tea leaves. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a box-type tea re-drying machine, which solves the problem in the prior art that small crumbs are produced and adhere to the tea leaves during the re-drying process, thus affecting the final taste of the tea leaves.

[0004] According to an embodiment of the present invention, a box-type tea re-drying machine includes a box body, a pair of opposing door bodies are arranged on one side of the box body, two rollers are rotatably arranged in the box body and respectively face the two door bodies, a plurality of first connecting holes connecting the inside and the outside of the rollers are arranged on the side walls of the rollers, two connecting pipes are respectively arranged on the top surface of the box body and the two connecting pipes are respectively connected to exhaust fans, two air blowers are respectively arranged under the box body and respectively under the two rollers, two heating components are also fixedly arranged in the box body and respectively under the two rollers, the air sent by the air blower into the box body is heated by the corresponding heating components and then moves upward to contact the corresponding rollers.

[0005] In the above embodiment, when re-drying is carried out, air enters the box from the bottom to the top, is heated into hot air by the heating component, and then continues to move upward. Then, driven by the induced draft fan, the air enters the drum to re-dry the tea leaves. The small crumbs generated during the re-drying process can continue to move upward with the airflow due to their light weight and pass out of the drum, and are finally extracted by the exhaust fan. This avoids the adverse effects of the small crumbs on the quality of the tea leaves, and solves the problem in the prior art that the small crumbs generated during the re-drying process will adhere to the tea leaves and affect the final taste of the tea leaves.

[0006] Furthermore, the drum is arranged horizontally and is provided with an opening facing the corresponding door body. A driving motor connected to the drum and driving the drum to rotate is arranged on the outer back side of the box body. A plurality of arc-shaped stirring plates are fixedly connected to the inner wall of the drum, and a plurality of second connecting holes are also arranged on the stirring plates.

[0007] Furthermore, the second communicating holes are in the shape of long strips extending along the axial direction of the drum, and are arranged at equal distances on the corresponding stirring plates.

[0008] Furthermore, a drum cover is buckled on the opening of the drum, and a plurality of clamping parts which can be respectively clamped with the stirring plates in the corresponding drums are fixedly connected to the drum cover.

[0009] Furthermore, a circular hole is provided at the center of the cylinder cover.

[0010] Furthermore, two pairs of connecting frames are arranged on the inner bottom surface of the box body and are respectively located below the drum. Two connecting buckets respectively connected to the two pairs of connecting frames are also arranged below the box body. The two air blowers are respectively connected to the two connecting buckets. The heating assembly includes two groups of electric heating tubes arranged above each pair of connecting frames, and protective covers are respectively provided above the two groups of heating tubes. A plurality of first through holes connecting the inside and the outside of the two protective covers are respectively provided on the opposite sides of the two protective covers.

[0011] Furthermore, a partition located between the two rollers is fixedly connected to the box body, and a plurality of third connecting holes connecting the two sides thereof are provided at the upper end of the partition. The two protective covers under the rollers are also detachably connected to a pair of arc-shaped orifice plates, and the two arc-shaped orifice plates are respectively detachably connected to the inner wall of the box body or the partition, and the third connecting hole is also located above the arc-shaped orifice plate, and a plurality of second through holes connecting the upper and lower parts thereof are also provided on the arc-shaped orifice plate.

[0012] Furthermore, a slag receiving box is arranged between the two protective covers below the drum, and the top surfaces of the two pairs of protective covers and the two arc-shaped orifice plates located on both sides of the slag receiving box are inclined toward the slag receiving box.

[0013] Furthermore, the two protective covers below the drum are respectively fixedly connected with mounting columns, and the two mounting columns are respectively rotatably connected with rollers. The outer wall of one end of the drum close to the opening is also in rolling contact with the two rollers below it.

[0014] Furthermore, two arc-shaped covers respectively connected to the two connecting pipes are fixedly arranged in the box, and the two arc-shaped covers respectively cover the middle sections of the upper parts of the two rollers in an arc shape, and all the first connecting holes on the rollers are located directly below the corresponding arc-shaped covers.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Air is sent into and out of the box by means of exhaust fans and air supply fans arranged above and below the box, and is heated into hot air by the heating component during the process to achieve re-drying. The small crumbs generated during the re-drying process can continue to move upward with the airflow and pass out of the drum due to their light weight, and are finally extracted by the exhaust fan, thus avoiding the adverse effects of the small crumbs on the quality of the tea, and solving the problem in the prior art that the small crumbs will adhere to the tea leaves during the re-drying process and affect the final taste of the tea. At the same time, two drums are arranged in the box, which can carry out two groups of processing at the same time or relatively independently, thereby improving the overall efficiency. Furthermore, the larger debris generated during the re-drying process can fall downward into the box, which is convenient for subsequent cleaning without cleaning the drums, thus improving the overall processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of a partial structure enlargement of an embodiment of the present invention;

[0019] Figure 3 for Figure 1 A is an enlarged schematic diagram of the local structure at center A;

[0020] Figure 4 This is a schematic diagram of the cylinder cover structure of an embodiment of the present invention;

[0021] Figure 5 for Figure 4 A magnified schematic diagram of the local structure at B in the middle;

[0022] Figure 6 A schematic diagram of the structure of a rotating plate according to an embodiment of the present invention;

[0023] In the above drawings:

[0024] Box body 1, door body 2, drum 3, drive motor 4, electric heating tube 5, stirring plate 6, second connecting hole 7, mounting shaft 8, cylinder cover 9, clamp 10, round hole 11, connecting frame 12, connecting bucket 13, connecting pipe 14, protective cover 15, partition 16, arc-shaped orifice plate 17, slag box 18, mounting column 19, roller 20, rolling groove 21, arc-shaped cover body 22, buckle 23, positioning rod 24. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] In an exemplary embodiment, Figure 1-6As shown, the present embodiment provides a box-type tea re-drying machine, which includes a box body 1, a pair of opposite door bodies 2 are arranged on one side of the box body 1, and two rollers 3 are rotatably arranged in the box body 1, which are respectively opposite to the two door bodies 2, and the rollers 3 are provided with openings opposite to the corresponding door bodies 2, so that tea leaves can enter the rollers 3. Furthermore, a driving motor 4 for driving the rollers 3 to rotate is also arranged on the back side of the box body 1 opposite to the door body 2. The driving motor 4 can be two that drive the two rollers 3 separately, so that the tea leaves can be turned over in the rollers 3. A plurality of first connecting holes connecting the inside and the outside of the rollers 3 are also arranged on the side walls of the rollers 3. The aperture of the first connecting holes is smaller than that of the tea leaves, so that the tea leaves are blocked in the rollers 3 but small crumbs and debris can pass through. The top surface of the box body 1 is also provided with Two connecting pipes 14 are respectively located above the two rollers 3, and the two connecting pipes 14 are respectively connected to the exhaust fans. Two air supply fans are also arranged below the box body 1, and two heating components are also fixedly arranged in the box body 1, which are respectively located below the two rollers 3. The heating components can be electric heating pipes 5. In this way, the air sent by the air supply fan into the box body 1 is heated by the corresponding heating components and then upwardly contacts the corresponding rollers 3. The exhaust fan makes the hot air further upward and passes through the first connecting hole into the roller 3, so that the hot air can contact the turned tea leaves to achieve re-drying, and then the exhaust fan continues to make the hot air pass through the first connecting hole to the outside of the roller 3. In the process of the hot air passing out, small crushed powder is also carried out, and the small crushed powder is finally extracted by the exhaust fan. The second connecting holes 7 are arranged on the inner wall of the drum 3 so as to prevent the tea leaves from being swayed by the stirring plates 6. The second connecting holes 7 are arranged on the inner wall of the drum 3 so as to prevent the tea leaves from being swayed by the stirring plates 6. Staying too long near the connection will cause uneven heating. In more detail, the second connecting hole 7 is set to a wider long strip, which can avoid unnecessary obstruction to the tea leaves and prevent the tea leaves from being stuck in the second connecting hole 7. At the same time, it also provides flipping for the tea leaves to ensure that when running at a lower rotation speed, the tea leaves can be prevented from being excessively damaged, thereby avoiding the production of too many small fragments, thereby balancing the relationship between the re-drying efficiency and the quality of the tea leaves. In further detail, the stirring plate 6 is set to be arc-shaped, so that when the drum 3 rotates, the tea leaves can stay on the stirring plate 6 more easily and pass through the set second connecting hole 7. Less part will be thrown down from a higher place with the stirring plate 6, avoiding more violent impact and causing greater damage to the tea leaves.

[0028] Furthermore, if Figure 1-5 As shown, the driving motor 4 is connected to the mounting shaft 8, and the mounting shaft 8 extends into the housing 1 and is fixedly connected to the drum 3, so that the drum 3 is driven. A drum cover 9 is also provided at one end of the drum 3 where an opening is provided, and a plurality of clamps 10 are fixedly connected to the drum cover 9, which can be respectively engaged with the stirring plates 6 in the corresponding drum 3, so that the drum cover 9 can rotate together with the drum 3. The drum cover 9 can prevent the tea leaves from being scattered out from the opening, and it is also convenient to disassemble to add or take out the tea leaves. Furthermore, a circular hole 11 is also provided at the center of the drum cover 9, and the circular hole 11 can facilitate observation of the internal situation and facilitate the input of tea leaves; further, the drum cover 9 can also be fixedly connected to a buckle 23 that can be buckled on the end of the drum 3, and the buckle 23 is detachably connected to the drum 3 through a positioning rod 24 (such as a threaded connection), so that the connection of the drum cover 9 is more stable.

[0029] like Figure 1-6 As shown, two pairs of connecting frames 12 are provided on the inner bottom surface of the box body 1, respectively located below the drum 3, and two connecting buckets 13 respectively connected to the two pairs of connecting frames 12 are provided below the box body 1. The two blowers are respectively connected to the two connecting buckets 13. The heating assembly includes two groups of electric heating tubes 5 arranged above each pair of connecting frames 12, and protective covers 15 are respectively buckled above the two groups of heating tubes. A plurality of first through holes connecting the inside and outside of the two protective covers 15 are respectively provided on the opposite sides thereof. The first through holes are used for the hot air formed by heating in the protective covers 15 to pass out into the box body 1, and then move upward under the guidance of the exhaust fan, and the protective covers 15 can prevent the debris from contacting the electric heating tubes 5 downward, resulting in direct scorching. Furthermore, a slag box 18 can be provided between the two protective covers 15 to facilitate the collection of such debris. In particular, the generated debris is larger and heavier, and will not be sucked away by the exhaust fan with the hot air like small debris, so it will fall downward, which also facilitates the cleaning of the debris and reduces the purification load of the gas extracted by the exhaust fan. In more detail, the generated hot air passes through both sides and then moves inwardly upward, and then passes through the first connecting hole into the drum 3, which will form a "vacuum area" without hot air flow between the drum 3 and the two protective covers 15 therebelow, and the debris can be protected from the influence of the hot air in the "vacuum area" and fall more smoothly into the slag box 18 below, which is convenient for subsequent cleaning and processing;

[0030] In a more detailed solution, the two sides of the box body 1 can be relatively independent spaces so that the two rollers 3 can operate relatively independently. That is to say, a partition 16 located between the two rollers 3 is fixedly connected in the box body 1, and a plurality of third connecting holes connecting the spaces on both sides of the box body 1 can be provided on the partition 16, so that the spaces on both sides are connected as a whole. During operation, one side is first re-dried, and the increase in internal temperature can provide preheating for the other side (usually during processing, one side is fed and operated, and then the other side is fed and operated), which can reduce the heating load of the other side during operation to a certain extent; in further detail, the two protective covers 15 under the rollers 3 are also detachably connected to a pair of arc-shaped orifice plates 17, and the two arc-shaped orifice plates 17 are respectively connected to the inner wall or the inner wall of the box body 1. The partition 16 is detachably connected and the third connecting hole is also located above the arc-shaped orifice plate 17. The arc-shaped orifice plate 17 is also provided with a plurality of second perforations connecting the upper and lower parts thereof (the second perforations and the first perforations are mainly for hot air to pass through, and the apertures may be smaller). The higher end of the arc-shaped orifice plate 17 is detachably fixed to the inner wall of the box body 1 or the partition 16, respectively. At the same time, the top surfaces of the two pairs of protective covers 15 located on both sides of the slag box 18 and the two arc-shaped orifice plates 17 are inclined toward the slag box 18, so that even if a small amount of debris falls onto the arc-shaped orifice plate 17, it can fall downward more efficiently (upward in a parabolic manner) to the lower side with the assistance of hot air blowing, and then fall into the slag box 18; at the same time, the detachable connection facilitates the cleaning of the space below the arc-shaped orifice plate 17 to prevent accidental residual debris below from being scorched.

[0031] like Figure 1-3 As shown in Figure 5, the two protective covers 15 below the drum 3 are also fixedly connected with mounting columns 19, and the two mounting columns 19 are rotatably connected with rollers 20. The outer wall of the end of the drum 3 close to the opening is also in rolling contact with the two rollers 20 below it. The rollers 20 provide rolling support for the end of the drum 3 away from the mounting shaft 8, so that the operation of the drum 3 can be more stable. In more detail, an annular rolling groove 21 is recessed on the outer wall of the end of the drum 3 where the opening is set. The rolling groove 21 is for the rollers 20 to roll therein, providing lateral limit for the rollers 20, so that the cooperation between the rollers 20 and the drum 3 is more stable. At the same time, the two rollers 20 are respectively located on both sides below the drum 3, which further improves the operation stability of the drum 3.

[0032] A further solution is that two arc-shaped covers 22 respectively connected to the two connecting pipes 14 are fixedly arranged in the box body 1, and the two arc-shaped covers 22 respectively cover the middle sections of the upper parts of the two rollers 3 in an arc shape, and all the first connecting holes on the rollers 3 are located directly below the corresponding arc-shaped covers 22, and the roller grooves 21 and the mounting shaft 8 are arranged outside the arc-shaped covers 22, and at the same time, a gap is also left between the outer wall above the roller 3 and the arc-shaped covers 22, so as to avoid interference between the arc-shaped covers 22 and the roller 3 during operation. The arc-shaped covers 22 can limit the movement of the exhaust fan mainly above the roller 3, so that the hot air enters the roller 3 from both sides below, and then leaves from the top. The hot air is opened into the arc-shaped cover 22, so that the direction of the hot air is more conducive to bringing the small crumbs directly into the arc-shaped cover 22 and then being smoothly taken away by the exhaust fan. At the same time, the hot air is also gathered from the lower parts on both sides to the upper middle part in the drum 3. In this way, after the hot air enters the drum 3, it directly contacts the tea leaves mainly turning on the two sides below (the drum 3 can be driven by the driving motor 4 to rotate forward / reverse alternately, which makes the re-drying more efficient). Re-drying is achieved by more direct and efficient contact, and the generated debris falls toward the middle part below and then falls into the slag box 18 below through the first connecting hole. The generated small crumbs move upward with the hot air, and finally the simultaneous re-drying, debris separation and small crumb separation are achieved more efficiently.

[0033] 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 it. 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 purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A box-type tea re-drying machine, characterized in that: It includes a box body, a pair of opposing door bodies are arranged on one side of the box body, two rollers are rotatably arranged in the box body and respectively face the two door bodies, a plurality of first connecting holes connecting the inside and the outside of the rollers are arranged on the side walls of the rollers, two connecting pipes are respectively arranged on the top surface of the box body and the two connecting pipes are respectively connected to exhaust fans, two air blowers are respectively arranged under the two rollers under the box body, two heating components are fixedly arranged under the two rollers under the two rollers, the air sent by the air blower enters the box body and is heated by the corresponding heating components and then moves upward to contact the corresponding rollers.

2. The box-type tea re-drying machine according to claim 1, characterized in that: The drum is disposed horizontally and is provided with an opening facing the door body, a driving motor connected to the drum and driving the drum to rotate is disposed on the outer back side of the box body, a plurality of arc-shaped stirring plates are fixedly connected to the inner wall of the drum, and a plurality of second connecting holes are also disposed on the stirring plates.

3. The box-type tea re-drying machine according to claim 2, characterized in that: The second communicating holes are in the shape of long strips extending along the axial direction of the drum, and are arranged at equal distances on the corresponding stirring plates.

4. The box-type tea re-drying machine according to claim 2, characterized in that: The opening of the drum is also buckled with a drum cover, and the drum cover is also fixedly connected with a plurality of clamping parts which can be respectively clamped with the stirring plates in the corresponding drums.

5. The box-type tea re-drying machine according to claim 4, characterized in that: A circular hole is also arranged at the center of the cylinder cover.

6. The box-type tea re-drying machine according to claim 1, characterized in that: Two pairs of connecting frames are arranged on the inner bottom surface of the box body and are respectively located below the rollers. Two connecting buckets respectively connected to the two pairs of connecting frames are also arranged below the box body. The two blowers are respectively connected to the two connecting buckets. The heating assembly includes two groups of electric heating tubes arranged above each pair of connecting frames, and protective covers are respectively provided above the two groups of heating tubes. A plurality of first through holes connecting the inside and the outside of the two protective covers are respectively provided on opposite sides of the two protective covers.

7. The box-type tea re-drying machine according to claim 6, characterized in that: A partition located between the two rollers is also fixedly connected to the box body, and a plurality of third connecting holes connecting the two sides thereof are also provided at the upper end of the partition. The two protective covers below the rollers are also detachably connected to a pair of arc-shaped orifice plates, and the two arc-shaped orifice plates are respectively detachably connected to the inner wall of the box body or the partition, and the third connecting holes are also located above the arc-shaped orifice plates, and the arc-shaped orifice plates are also provided with a plurality of second through holes connecting the upper and lower parts thereof.

8. The box-type tea re-drying machine according to claim 7, characterized in that: A slag receiving box is also arranged between the two protective covers below the drum, and the top surfaces of the two pairs of protective covers located on both sides of the slag receiving box and the two arc-shaped orifice plates are inclined toward the slag receiving box.

9. The box-type tea re-drying machine according to claim 6, characterized in that: The two protective covers below the roller are respectively fixedly connected with mounting columns, and the two mounting columns are respectively rotatably connected with rollers. The outer wall of one end of the roller close to the opening is also in rolling contact with the two rollers below it.

10. The box-type tea re-drying machine according to any one of claims 1 to 9, characterized in that: Two arc-shaped covers respectively connected to the two connecting pipes are fixedly arranged in the box, and the two arc-shaped covers respectively cover the middle sections of the upper parts of the two rollers in an arc shape, and all the first connecting holes on the rollers are located directly below the corresponding arc-shaped covers.

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