A UV sterilizing device for processing large-leaf white tea

Abstract

The present invention provides an ultraviolet sterilization device for processing large-leaf white tea, and belongs to the technical field of tea processing. The support plate of the present invention is fixedly installed at both ends of the drum, the drum is rotatably installed on the frame through the support plate and four support wheels, the motor is installed on the frame, the motor is connected to the drum through gears and gear plates, the two ends of the rotating shaft are installed on the frame, the ultraviolet generator is installed on the rotating shaft, the ultraviolet generator is in the drum, the feed hopper is installed at the front end of the frame, and the discharge port of the feed hopper extends from the front end of the drum into the drum; the white tea is sterilized in the drum, and the white tea is lifted and flipped by the turning plate during the sterilization process to ensure that the white tea is evenly irradiated and sterilized by ultraviolet rays; the white tea is pushed by a spiral pushing plate with a small pitch to ensure that the white tea is slowly transported forward during the sterilization process; the uniformity of sterilization and the consistency of time can be effectively improved, the sterilization effect can be ensured, and the quality of white tea can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tea processing, and in particular relates to an ultraviolet sterilization device and a sterilization method for processing large-leaf white tea. Background Art

[0002] White tea, one of the six major types of tea in China, is a slightly fermented tea. White tea is made through withering, baking (or shade drying), picking, and re-firing. It has the characteristics of white dry tea color, bright yellow soup color, fresh taste, and tender and uniform leaf bottom. White tea occupies an increasingly important position in the current tea circulation market. During the processing and transportation of white tea, due to the influence of processing conditions and environmental factors, the tea leaves will be contaminated by microorganisms to varying degrees, which will affect the quality of white tea. Therefore, it is necessary to sterilize the white tea during processing. Since fresh tea leaves are very delicate, ultraviolet rays are generally used for sterilization to prevent the intact tea buds from being damaged; in the prior art, tea leaves are transported by conveyor belts, and the ultraviolet rays emitted by ultraviolet light sources are irradiated during the transportation process for sterilization. The bottom surface of the tea leaves and the tea leaves piled below cannot be irradiated with ultraviolet rays, and cannot be sterilized evenly, resulting in poor sterilization effect and affecting the quality of tea leaves. In addition, there are few studies on the technology for sterilizing large-leaf white tea in the existing sterilization equipment.

[0003] Therefore, it is necessary to design an ultraviolet sterilization device for processing large-leaf white tea, which can turn the white tea over and spread it evenly during the sterilization process to ensure that the white tea is evenly irradiated and sterilized by ultraviolet rays, thereby achieving better sterilization effect. Summary of the invention

[0004] In order to overcome the problem in the background technology that tea leaves are transported by a conveyor belt and sterilized by ultraviolet rays emitted by an ultraviolet light source during the transportation, but the bottom surface of the tea leaves and the tea leaves piled underneath cannot be irradiated by ultraviolet rays and cannot be sterilized evenly, resulting in poor sterilization effect and affecting the quality of the tea leaves, the present invention provides an ultraviolet sterilization device and a sterilization method for processing large-leaf white tea; the present invention is connected to the tea conveyor belt on the tea processing assembly line, and the white tea is sterilized by ultraviolet rays with a wavelength of 250-260nm in a drum 2. During the sterilization process, the white tea is lifted and turned by a turning plate 22 to ensure that the white tea is evenly irradiated and sterilized by ultraviolet rays; the white tea is pushed by a spiral pushing plate 21 with a small pitch to ensure that the white tea is slowly conveyed forward during the sterilization process; the consistency of the sterilization time is ensured, and the sterilization effect is ensured; the uniformity of the sterilization can be effectively improved, the sterilization effect can be ensured, and the quality of the tea leaves can be improved.

[0005] To achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an ultraviolet disinfection device for processing large-leaf white tea mainly comprises a frame 1, a drum 2, a support plate 3, a support wheel 31, a gear plate 32, a motor 33, a feed hopper 4, an ultraviolet generating device 5, and a rotating shaft 6, wherein the support plate 3 is fixedly mounted at both ends of the drum 2, the drum 2 is rotatably mounted on the frame 1 through the support plate 3 and four support wheels 31, the gear plate 32 is fixedly mounted in the middle of the drum 2, the motor 33 is mounted on the frame 1, the motor 33 is connected to the gear plate 32 through a gear, both ends of the rotating shaft 6 are mounted on the frame 1, the rotating shaft 6 is in the drum 2, the ultraviolet generating device 5 is mounted on the rotating shaft 6, the ultraviolet generating device 5 is in the drum 2, the feed hopper 4 is mounted on the front end of the frame 1, and the discharge port of the feed hopper 4 extends from the front end of the drum 2 into the drum 2; a spiral pushing plate 21 is provided on the inner arm of the drum 2, and an axial flipping plate 22 is provided on the inner arm of the drum 2, and the height of the flipping plate 22 is less than the height of the spiral pushing plate 21.

[0006] Furthermore, an end cover 11 is installed at the front end of the frame 1, the end cover 11 is sealed with the feed hopper 4, and a gap is left between the end cover 11 and the drum 2; a rear cover 12 is installed at the end of the frame 1, and a gap is left between the rear cover 12 and the drum 2, and a discharge port 13 is provided at the bottom of the rear cover 12.

[0007] Furthermore, the shaft 6 is rotatably mounted on the frame 1 via a bearing, a fixed arm 61 is provided at the end of the shaft 6, an arc plate 14 is provided at the end of the frame 1, pin holes are evenly provided on the arc plate 14, and the fixed arm 61 is connected to the arc plate 14 via a pin limiter.

[0008] Furthermore, a handle 62 for easy adjustment is provided at the end of the fixing arm 61 .

[0009] Furthermore, the drum 2 is evenly provided with sieve holes for discharging debris.

[0010] Furthermore, a protective shell 15 is installed on the frame 1, and a discharge port 16 is provided at the bottom of the protective shell 15.

[0011] Furthermore, an exhaust port 17 is provided at the top of the protective shell 15, and the exhaust port 17 is connected to the air handling device through an induced draft fan.

[0012] Furthermore, the ultraviolet generating device 5 comprises an ultraviolet lamp tube 51 and a lampshade 52 . The lampshade 52 is mounted on the rotating shaft 6 , and the ultraviolet lamp tube 51 is evenly mounted on the bottom of the lampshade 52 .

[0013] A method for ultraviolet sterilization for processing large-leaf white tea, comprising the following steps:

[0014] A. Equipment debugging: adjust the speed of the motor 33 to make the speed of the drum 2 0.5-3r / min, adjust the wavelength of the ultraviolet generating device 5 within the range of 250-260nm; adjust the irradiation angle of the ultraviolet generating device 5 according to the material amount and fix it;

[0015] B. The white tea is evenly and slowly conveyed into the drum 2; during the sterilization process, the white tea is slowly lifted and turned by the turning plate 22 to ensure that the white tea is evenly irradiated by ultraviolet rays and sterilized;

[0016] C. Push the white tea through the spiral push plate 21 with a small pitch to ensure that the white tea is slowly transported forward during the sterilization process, and use ultraviolet rays with a wavelength of 250-260nm for sterilization for 10 minutes to ensure the consistency of the sterilization time and the uniformity of the material sterilization.

[0017] Beneficial effects of the present invention:

[0018] In the present invention, white tea is sterilized in a drum, and during the sterilization process, the tea leaves are lifted and flipped by a turning plate to ensure that the tea leaves are evenly irradiated with ultraviolet rays and sterilized; the tea leaves are pushed by a spiral pushing plate with a small pitch to ensure that the tea leaves are slowly transported forward during the sterilization process, thereby ensuring the consistency of the sterilization time and the sterilization effect; the sterilization treatment of white tea has a significant impact on its quality and shelf life, and the sterilization treatment can reduce harmful microorganisms in the white tea, prevent the white tea from deteriorating during storage, and maintain the freshness and taste of the white tea; at the same time, the sterilization treatment can also improve the hygiene standards of the white tea to ensure the safety of consumers when drinking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main cross-section structure of the present invention.

[0020] Figure 2 It is a left-side full-section structural schematic diagram of the present invention.

[0021] Figure 3 It is a three-dimensional schematic diagram of the present invention.

[0022] Figure 4 It is a three-dimensional schematic diagram of the main axle measurement of the present invention without a protective shell.

[0023] Figure 5 It is a rear axonometric stereoscopic schematic diagram of the present invention without a protective shell.

[0024] Figure 6 It is a three-dimensional schematic diagram of the back cover of the present invention.

[0025] Figure 7 It is a three-dimensional schematic diagram of the ultraviolet generating device and the main axis measurement of the rotating shaft of the present invention.

[0026] Figure 8It is a perspective schematic diagram of the ultraviolet generating device and the rotating shaft of the present invention. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0028] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0029] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0030] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding by technicians.

[0031] The invention discloses an ultraviolet sterilization device and a sterilization method for processing large-leaf white tea. The ultraviolet sterilization device mainly comprises a frame 1, a drum 2, a support plate 3, a support wheel 31, a gear plate 32, a motor 33, a feed hopper 4, an ultraviolet generating device 5, and a rotating shaft 6. The support plate 3 is fixedly mounted at both ends of the drum 2, the drum 2 is rotatably mounted on the frame 1 through the support plate 3 and four support wheels 31, the gear plate 32 is fixedly mounted in the middle of the drum 2, the motor 33 is mounted on the frame 1, the motor 33 is connected to the gear plate 32 through a gear, both ends of the rotating shaft 6 are mounted on the frame 1, the rotating shaft 6 is in the drum 2, the ultraviolet generating device 5 is mounted on the rotating shaft 6, the ultraviolet generating device 5 is in the drum 2, the feed hopper 4 is mounted at the front end of the frame 1, and the discharge port of the feed hopper 4 extends from the front end of the drum 2 into the drum 2; a spiral pushing plate 2 is provided on the inner arm of the drum 2 1. An axial turning plate 22 is provided on the inner arm of the drum 2, and the height of the turning plate 22 is less than the height of the spiral pushing plate 21; the present invention is docked with the tea conveyor belt on the tea processing line, the drum 2 is stably supported by four supporting wheels 31, and the motor 33 drives the drum 2 to rotate slowly, and the tea enters the drum 2 from the feed hopper 4, and the tea is sterilized in the drum 2. During the sterilization process, as the drum 2 slowly rotates, the tea is lifted by the turning plate 22 and then turned and thrown down. During the turning and throwing process, the tea on the upper surface slides and falls first, and the tea on the bottom is lifted and then falls down to be sterilized by ultraviolet irradiation, which has a good turning effect and ensures that the tea is evenly irradiated and sterilized by ultraviolet rays; the material is pushed by the spiral pushing plate 21 with a small pitch to ensure that the material is slowly conveyed forward during the sterilization process; the consistency of the sterilization time is ensured, and the sterilization effect is ensured; the uniformity of sterilization can be effectively improved, the sterilization effect is ensured, and the quality of tea is improved.

[0032] An end cover 11 is installed at the front end of the frame 1, and the end cover 11 is sealed with the feed hopper 4, leaving a gap between the end cover 11 and the drum 2; a rear cover 12 is installed at the end of the frame 1, and a gap is left between the rear cover 12 and the drum 2, and a discharge port 13 is provided at the bottom of the rear cover 12 to ensure that the equipment is relatively sealed and reduce the impact of ultraviolet sterilization on the surrounding environment.

[0033] The rotating shaft 6 is rotatably mounted on the frame 1 through a bearing, a fixed arm 61 is provided at the end of the rotating shaft 6, an arc plate 14 is provided at the end of the frame 1, pin holes are evenly provided on the arc plate 14, and the fixed arm 61 is connected to the arc plate 14 through a pin limiter; the irradiation angle of the ultraviolet generating device 5 can be adjusted according to the amount of material, and the ultraviolet generating device 5 is kept biased toward the side of material lifting to ensure the sterilization effect.

[0034] A handle 62 for easy adjustment is provided at the end of the fixed arm 61 .

[0035] The drum 2 is evenly provided with sieve holes for discharging debris and debris, so that the debris and debris in the tea leaves can be discharged.

[0036] A protective shell 15 is installed on the frame 1, and a discharge port 16 is provided at the bottom of the protective shell 15 to further ensure the sealing degree of the equipment and reduce the impact of ultraviolet rays on the surrounding environment.

[0037] An exhaust port 17 is provided on the top of the protective shell 15, and the exhaust port 17 is connected to the air treatment equipment through an induced draft fan. The dust and ozone generated by ultraviolet radiation are discharged through the induced draft fan, and the air is treated through the air treatment equipment.

[0038] The ultraviolet generating device 5 comprises an ultraviolet lamp tube 51 and a lampshade 52 . The lampshade 52 is mounted on the rotating shaft 6 , and the ultraviolet lamp tube 51 is evenly mounted on the bottom of the lampshade 52 .

[0039] A method for ultraviolet sterilization for processing large-leaf white tea, comprising the following steps:

[0040] A. Equipment debugging: adjust the speed of the motor 33 to make the speed of the drum 2 0.5-3r / min, adjust the wavelength of the ultraviolet generating device 5 within the range of 250-260nm; adjust the irradiation angle of the ultraviolet generating device 5 according to the material amount and fix it;

[0041] B. The tea leaves are evenly and slowly transported into the drum 2; during the sterilization process, the material is slowly lifted and turned by the turning plate 22 to ensure that the material is evenly irradiated and sterilized by ultraviolet rays;

[0042] C. Push the material through the spiral push plate 21 with a small pitch to ensure that the material is slowly transported forward during the sterilization process, and use ultraviolet light with a wavelength of 250-260nm for 10 minutes to ensure the consistency of the sterilization time and the uniformity of the material sterilization.

[0043] Working process:

[0044] The present invention is docked with a tea conveyor belt on a tea processing assembly line. The drum 2 is stably supported by four supporting wheels 31. The motor 33 drives the drum 2 to rotate slowly. The tea leaves enter the drum 2 from the feed hopper 4. The tea leaves are sterilized in the drum 2. During the sterilization process, as the drum 2 rotates slowly, the tea leaves are lifted and then flipped and thrown down by the flipping plate 22. During the flipping and throwing process, the tea leaves on the upper surface slide and fall first, and the tea leaves on the bottom are lifted and then fall down to be sterilized by ultraviolet rays. The present invention has a good flipping effect, and ensures that the material is evenly irradiated and sterilized by ultraviolet rays. The material is pushed by the spiral pushing plate 21 with a small pitch, and the material is slowly conveyed forward during the sterilization process. The consistency of the sterilization time and the sterilization effect are ensured. The uniformity of the sterilization can be effectively improved, the sterilization effect can be ensured, and the quality of the tea leaves can be improved.

[0045] The irradiation angle of the ultraviolet generating device 5 can be adjusted according to the amount of material, and the ultraviolet generating device 5 is kept biased towards the material lifting side to ensure the sterilization effect; the equipment is relatively closed to reduce the impact of ultraviolet rays on the surrounding environment, and the dust and ozone generated by ultraviolet irradiation are discharged through the induced draft fan, and the air is treated through the air treatment equipment.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An ultraviolet sterilization device for processing large-leaf white tea, characterized in that: The ultraviolet sterilization device for processing large-leaf white tea comprises a frame (1), a drum (2), a support plate (3), a support wheel (31), a gear plate (32), a motor (33), a feed hopper (4), an ultraviolet generating device (5), and a rotating shaft (6). The support plate (3) is fixedly mounted on both ends of the drum (2); the drum (2) is rotatably mounted on the frame (1) through the support plate (3) and four support wheels (31); the gear plate (32) is fixedly mounted in the middle of the drum (2); the motor (33) is mounted on the frame (1); the motor (33) is connected to the gear plate via a gear. The rotating shaft (6) is connected to the frame (1) by transmission, and both ends of the rotating shaft (6) are installed on the frame (1), the rotating shaft (6) is located in the drum (2), the ultraviolet generating device (5) is installed on the rotating shaft (6), the ultraviolet generating device (5) is located in the drum (2), the feed hopper (4) is installed at the front end of the frame (1), and the discharge port of the feed hopper (4) extends from the front end of the drum (2) into the drum (2); a spiral pushing plate (21) is provided on the inner arm of the drum (2), and an axial turning plate (22) is provided on the inner arm of the drum (2), and the height of the turning plate (22) is less than the height of the spiral pushing plate (21); The front end of the frame (1) is provided with an end cover (11), the end cover (11) is sealedly connected to the feed hopper (4), and a gap is left between the end cover (11) and the roller (2); the end of the frame (1) is provided with a rear cover (12), a gap is left between the rear cover (12) and the roller (2), and a discharge port (13) is provided at the bottom of the rear cover (12); The rotating shaft (6) is rotatably mounted on the frame (1) via a bearing, a fixed arm (61) is provided at the end of the rotating shaft (6), an arc-shaped plate (14) is provided at the end of the frame (1), pin holes are evenly arranged on the arc-shaped plate (14), and the fixed arm (61) and the arc-shaped plate (14) are connected to each other via a pin limiter; The drum (2) is evenly provided with sieve holes for discharging debris.

2. The ultraviolet disinfection device for processing large-leaf white tea according to claim 1, characterized in that: A handle (62) for easy adjustment is provided at the end of the fixed arm (61).

3. The ultraviolet disinfection device for processing large-leaf white tea according to claim 1 or 2, characterized in that: A protective shell (15) is installed on the frame (1), and a discharge port (16) is provided at the bottom of the protective shell (15).

4. The ultraviolet disinfection device for processing large-leaf white tea as claimed in claim 3, characterized in that: An air outlet (17) is provided at the top of the protective shell (15), and the air outlet (17) is connected to the air handling equipment via an induced draft fan.

5. The ultraviolet disinfection device for processing large-leaf white tea according to any one of claims 1, 2 and 4, characterized in that: The ultraviolet light generating device (5) comprises an ultraviolet light tube (51) and a lampshade (52). The lampshade (52) is mounted on a rotating shaft (6), and the ultraviolet light tube (51) is evenly mounted on the bottom of the lampshade (52).

6. The ultraviolet sterilization device for processing large-leaf white tea as claimed in claim 5, characterized in that: The following usage steps are included: A. Equipment debugging: adjusting the rotation speed of the motor (33) so that the rotation speed of the drum (2) is 0.5-3 r / min, adjusting the wavelength of the ultraviolet generating device (5) within the range of 250-260 nm; adjusting and fixing the irradiation angle of the ultraviolet generating device (5) according to the amount of material; B. uniformly and slowly conveying the white tea into the drum (2); during the sterilization process, the white tea is slowly lifted and turned by the turning plate (22) to ensure that the white tea is uniformly irradiated by ultraviolet rays and sterilized; C. Pushing the white tea through the spiral push plate (21) with a small pitch to ensure that the white tea is slowly transported forward during the sterilization process, using ultraviolet light with a wavelength of 250-260nm for sterilization for 10 minutes to ensure the consistency of the sterilization time and the uniformity of the material sterilization.

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