Efficient tea leaf killing device

Abstract

The utility model discloses an efficient tea leaf killing device which comprises a base, a transmission shaft and a conveying belt are rotationally installed on the base, and a bottom plate, an upper cover and a heating rod are arranged on the base. The upper cover is elliptical and is provided with a guide plate and a slidable filter plate; the motor drives the conveying belt to convey tea leaves, and the tea leaves are fixed in a space defined by the upper cover by means of high-temperature gas circulation. High-temperature gas overflow is reduced through the upper baffle and the lower baffle, tea leaves are scattered through the material scattering rods to avoid accumulation, gas exchange circulation is promoted through side plate through holes and filter plate holes, and gas flow is assisted through an air pipe and a guide pipe. The device solves the problems of non-uniform fixation, low efficiency, high energy consumption, easy adhesion and accumulation of tea leaves and the like of a traditional leaf-killing device, realizes efficient fixation of the tea leaves, improves the quality of the tea leaves, and reduces the production cost.

Description

Technical Field

[0001] This application relates to the field of tea leaf sterilization technology, specifically to a highly efficient tea leaf sterilization device. Background Technology

[0002] In tea production, leaf-killing (fixing) is a crucial step that plays a decisive role in the quality of the tea. Currently, tea leaf-killing equipment on the market has several problems. Some equipment has low efficiency and cannot meet the demands of the ever-increasing scale of tea production. As the tea market continues to expand, tea producers are increasingly eager to improve production efficiency. However, some existing equipment has slow processing speeds and limited capacity, leading to longer production cycles, increased production costs, and reduced market competitiveness for enterprises.

[0003] Meanwhile, many leaf-killing devices consume a large amount of energy, which is inconsistent with the current trend of energy conservation and emission reduction. Energy costs account for a certain proportion of tea production costs, and excessive energy consumption not only increases the economic burden on enterprises but also puts greater pressure on the environment.

[0004] In addition, during the withering process of tea leaves, the high moisture content of the tea leaves makes them prone to sticking together, affecting the withering effect. Moreover, the tea leaves often pile up together during feeding and discharging, which is not conducive to uniform withering and subsequent observation and processing.

[0005] Therefore, developing a highly efficient tea leaf-killing device that can solve the above problems is of great practical significance, as it can help improve the quality and efficiency of tea production and reduce production costs. Summary of the Invention

[0006] In response to the above-mentioned technical problems, this application solves the problems of uneven fixation of tea leaves, over-fixation of some tea leaves, low utilization rate of high-temperature gas, and low looseness of tea leaves in the prior art.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows: a high-efficiency tea leaf-killing device, comprising a base, a drive shaft rotatably mounted on the base, a conveyor belt provided on the drive shaft, the conveyor belt having holes, a base plate fixedly mounted on the base, a top cover and a heating rod fixedly mounted on the base plate, the top cover having an elliptical plate structure, a right guide plate, a left guide plate and an mounting strip fixedly mounted on the top cover, a filter plate slidably mounted on the mounting strip, the right guide plate and the left guide plate having an arc-shaped structure and being inclined in opposite directions, the filter plate having an arc-shaped structure with its protruding end facing downward toward the base plate.

[0008] Preferably, an upper baffle and a lower baffle are fixedly installed on the upper cover to seal both ends of the upper cover.

[0009] Preferably, a plurality of loosening rods are fixedly installed on the upper baffle for loosening the tea leaves.

[0010] Preferably, a side plate is fixedly installed on the lower baffle, and a connecting part is provided on the side plate. The connecting part has an arc surface that matches the inner wall of the upper cover.

[0011] Preferably, the connecting part of the lower baffle is provided with an inclined through hole.

[0012] Preferably, the filter plate is provided with holes for gas exchange.

[0013] Preferably, an air duct is fixedly installed on the base plate, a guide pipe is fixedly installed on the air duct, and an arc-shaped structure is provided on the guide pipe, which is the same as the arc-shaped structure of the filter plate.

[0014] The technical solution provided in this application has the following advantages compared with the prior art:

[0015] 1. In this application, the tea leaves move in a space enclosed by the top cover, side plates, and conveyor belt, following the circulation of high-temperature gas. During this process, the tea leaves are in constant and full contact with the high-temperature gas. Whether in the rising, falling, or horizontal movement stages, they can be heated relatively evenly, effectively solving the problem of uneven withering and improving the consistency of tea quality.

[0016] 2. The unique gas circulation path design of this application enables high-temperature gas to fully cover the movement trajectory of the tea leaves, ensuring that each tea leaf can receive sufficient and uniform fixation treatment during the circulation process, avoiding local overheating or undercooling.

[0017] 3. This application, through the design of a reasonable gas circulation and tea leaf movement path, enables high-temperature gas moving along the same path to fix more tea leaves. During the circulation process, the high-temperature gas continuously contacts the tea leaves, improving the utilization rate of the high-temperature gas and thus shortening the overall time required to fix a batch of tea leaves, meeting the efficiency requirements of large-scale tea production.

[0018] 4. In this application, the high-temperature gas drives the tea leaves to circulate rapidly, with new tea leaves constantly entering the area affected by the high-temperature gas, while the tea leaves that have already been processed leave in a timely manner. This rapid circulation mechanism helps to improve the efficiency of processing.

[0019] 5. This application reduces the amount of heating gas used and lowers energy consumption by rationally designing the gas circulation path. Simultaneously, by sealing both ends of the top cover with upper and lower baffles, the leakage of high-temperature gas is reduced, increasing the residence time of high-temperature gas within the device, thereby improving energy utilization and reducing production costs.

[0020] 6. In the gas circulation process of this application, part of the gas is reheated by the heating rod, which realizes the effective utilization of waste heat and further reduces energy waste.

[0021] 7. In this application, the tea leaves are circulated and moved under the influence of high-temperature gas, constantly being broken up and turned over, which improves the looseness of the tea leaves and effectively avoids the sticking of tea leaves caused by excessive humidity. This ensures that each tea leaf can fully contact the high-temperature gas and guarantees the fixation effect.

[0022] 8. The material feeding rod on the upper baffle of this application blocks and disperses the tea leaves when the conveyor belt transports the tea leaves into and out of the cavity enclosed by the upper cover, so that the tea leaves can be evenly spread out during feeding, which is convenient for subsequent fixation; it can also ensure that the tea leaves are uniform during discharge, which is convenient for observing the fixation effect and carrying out subsequent processing, while avoiding the problem of over-fixation caused by the accumulation of tea leaves after fixation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a cross-sectional view of this application;

[0025] Figure 3 This is a schematic diagram of the structure of the right guide plate of this application;

[0026] Figure 4 This is a schematic diagram of the structure of the cover of this application;

[0027] Figure 5 This is a schematic diagram of the airflow inside the cover of this application;

[0028] Figure 6 This is a schematic diagram of the structure of the upper baffle in this application;

[0029] Figure 7 for Figure 6 Enlarged view of the local structure at point A;

[0030] In the diagram: 101-Base; 102-Drive shaft; 103-Side plate; 104-Conveyor belt; 105-Top cover; 106-Top baffle; 107-Lower baffle; 108-Right guide plate; 109-Left guide plate; 110-Heating rod; 111-Heater; 112-Air duct; 113-Guide pipe; 114-Fan; 115-Mounting strip; 116-Base plate; 117-Filter plate; 118-Discharge rod. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] like Figures 1 to 7 As shown, a high-efficiency tea leaf-killing device includes a base 101, a drive shaft 102 rotatably mounted on the base 101, a conveyor belt 104 with holes on the drive shaft 102, a base plate 116 fixedly mounted on the base 101, a top cover 105 and a heating rod 110 fixedly mounted on the base plate 116, the top cover 105 having an elliptical plate structure, a right guide plate 108, a left guide plate 109 and an mounting strip 115 fixedly mounted on the top cover 105, a filter plate 117 slidably mounted on the mounting strip 115, the right guide plate 108 and the left guide plate 109 having an arc-shaped structure and being inclined in opposite directions, and the filter plate 117 having an arc-shaped structure with its protruding end facing downward toward the base plate 116.

[0034] Specifically, a motor is installed on the base 101. The output end of the motor is connected to the drive shaft 102 through a belt and pulley, so that the conveyor belt 104 drives the tea leaves to pass through the high-temperature gas zone for the fixation process.

[0035] In use, the tea leaves, after being processed (prepared for initial processing), are placed on the conveyor belt 104. The conveyor belt 104 is then driven to transport the tea leaves into the area where the upper cover 105 is located. Then, as... Figure 5 As shown, the high-temperature gas carries the tea leaves away from the conveyor belt 104 and upwards. Following the shape of the inner wall of the upper cover 105 (a semi-elliptical structure) and the guidance of the inclined left guide plate 109, the tea leaves move to the upper end. Then, some of the more moist tea leaves fall onto the conveyor belt 104, where they again follow the airflow to form a floating and falling cycle. The other tea leaves follow the airflow, entering the right guide plate 108 from the left guide plate 109, and then returning to the conveyor belt 104 through the inclined right guide plate 108. After returning to the conveyor belt 104, some of the gas moves on the conveyor belt 104 due to the obstruction of the conveyor belt 104 and the side plate 103. Figure 5 The gas on the right side of the middle conveyor belt 104 moves and then contacts the inner wall on the left side of the upper cover 105, and is then conveyed upward.

[0036] During this process, the tea leaves are controlled to move, allowing them to disperse and fully contact the high-temperature gas. Through prolonged contact and circulation, the looseness of the tea leaves is improved, preventing excessive humidity from causing sticking and affecting the withering process. The utilization rate of the high-temperature gas is also improved, allowing more tea leaves to be withered along the same path, achieving efficient withering. This reduces the overall time required to wither a batch of tea leaves, while also reducing the amount of heating gas needed, thereby reducing energy consumption.

[0037] like Figure 1 and Figure 6 As shown, an upper baffle 106 and a lower baffle 107 are fixedly installed on the upper cover 105 to seal both ends of the upper cover 105.

[0038] Specifically, the upper cover 105 and the bottom plate 116 form a semi-elliptical shell structure with a cavity in the middle. The side plate 103 and the conveyor belt 104 are installed in this cavity, so that the conveyor belt 104 transports tea leaves into the cavity for fixation and then removes them. The front and rear ends of the cavity are sealed by upper baffles 106 and lower baffles 107 to reduce the leakage of high-temperature gas and ensure that the high-temperature gas stays in the cavity as long as possible, thereby improving the energy utilization rate of the fixation process. The upper baffle 106 is in close contact with the side plate 103, but does not contact the conveyor belt 104. There is a certain gap between the upper baffle 106 and the conveyor belt 104, which provides a passage to ensure that the conveyor belt 104 can transport tea leaves in and out of the cavity.

[0039] like Figure 3 As shown, a plurality of loosening rods 118 are fixedly installed on the upper baffle 106 for loosening tea leaves.

[0040] Specifically, when the conveyor belt 104 transports the tea leaves into and out of the cavity enclosed by the upper cover 105, the unloading rod 118 on the upper baffle 106 blocks the tea leaves, causing the piled-up tea leaves to disperse and thus guide the tea leaves. During feeding, the tea leaves are spread out as evenly as possible to facilitate the circulation and movement of the tea leaves driven by the high-temperature gas. During discharge, the tea leaves are also spread out as evenly as possible to facilitate the observation of the tea leaf fixation effect and subsequent processing, and to prevent the tea leaves from being piled up after fixation, which would prevent them from cooling down quickly and remain at a high temperature for a long time, thus avoiding over-fixing of the tea leaves.

[0041] like Figure 6 and Figure 7 As shown, a side plate 103 is fixedly installed on the lower baffle 107. A connecting part is provided on the side plate 103. The connecting part has an arc surface that matches the inner wall of the upper cover 105.

[0042] Specifically, the part on the side plate 103 located between the two lower baffles 107 is a connecting part. The upper end of the connecting part is provided with an arc-shaped surface for contacting the inner wall of the upper cover 105 to ensure tight installation.

[0043] like Figure 6 and Figure 7 As shown, the lower baffle 107 has an inclined through hole on its connecting part.

[0044] Specifically, the side of the connecting part of the side plate 103 is provided with an inclined through hole, such as... Figure 6 and Figure 7 As shown, the through hole of the left side plate 103 is tilted to the left at 45 degrees, so that the gas passes through the through hole from below and moves towards the conveyor belt 104; the through hole of the right side plate 103 is tilted to the right at 45 degrees, so that the gas above the conveyor belt 104 passes through the through hole and moves towards the filter plate 117, thereby realizing the exchange and circulation of the gas on the filter plate 117 and the gas in the cavity of the conveyor belt 104.

[0045] like Figure 4 and Figure 5 As shown, the filter plate 117 is provided with holes for gas exchange.

[0046] Specifically, the gas exchange between the two sides of the filter plate 117 is achieved through the holes on the filter plate 117. The heater 111 controls the heating rod 110 to heat the gas below and then conveys it upward. The gas enters the circulation of the filter plate 117 and the cavity above the conveyor belt 104 through the filter plate 117, replenishing the temperature of the circulating gas and ensuring the blanching effect.

[0047] like Figure 2 , Figure 3 and Figure 5 As shown, a duct 112 is fixedly installed on the base plate 116, and a guide pipe 113 is fixedly installed on the duct 112. The guide pipe 113 is provided with an arc-shaped structure, which is the same as the arc-shaped structure of the filter plate 117.

[0048] Specifically, the gas is generated by the fan 114 and discharged through the guide pipe 113 on the duct 112. The nozzle of the guide pipe 113 has an arc-shaped structure, which is the same as the arc-shaped structure of the filter plate 117. This allows the ejected gas to adapt to the curvature of the filter plate 117, and to directionally assist the circulation of the high-temperature gas. The end of the duct 112 away from the guide pipe 113 is provided with an arc surface, which guides the flow of air on the right side and reduces the interference of the duct 112.

[0049] like Figure 5As shown, upon startup, the heating rod 110 first heats the gas near the heating rod 110. The high-temperature gas flows upward, passes through the filter plate 117, and enters the space above the filter plate 117. Then, the gas is sprayed out through the guide pipe 113, blowing the gas flow. The curvature of the filter plate 117 causes the high-temperature gas to flow upward and enter the gap between the upper cover 105 and the side plate 103. It moves towards the conveyor belt 104 through the inclined through-hole of the side plate 103, and then blows the tea leaves on the conveyor belt 104 through the holes of the conveyor belt 104, causing the tea leaves to disperse. Some tea leaves follow the airflow and flow on the inner wall of the upper cover 105. They are guided by the inclined left guide plate 109, moving upward and towards the discharge direction, i.e., the output direction of the conveyor belt 104. After the tea leaves move to the top, some of the more moist tea leaves fall due to gravity. During the falling process, they come into contact with the circulating airflow, which disperses these more moist tea leaves. Through repeated operation, the tea leaves are fully dispersed. To ensure the blanching effect, the tea leaves on the left guide plate 109 move to the right side and are then guided by the right guide plate 108 to the junction of the conveyor belt 104 and the top cover 105. At this time, the gas is divided into two parts. One part flows from right to left on the conveyor belt 104 due to the obstruction of the conveyor belt 104 and other parts, driving the tea leaves to flow. The other part of the airflow enters the space between the conveyor belt 104 and the filter plate 117 through the through hole of the side plate 103, and then moves to the left side through the arc structure of the filter plate 117. Similarly, some gas passes through the hole of the filter plate 117 and enters the space between the bottom plate 116 and the filter plate 117. This part of the gas passes through the heating rod 110 and is heated by the heat released by the heating rod 110. When this part of the gas moves, it also drives the gas on the bottom plate 116 to flow. Guided by the top cover 105, it passes through the hole of the filter plate 117 and then follows the gas flow sprayed out by the guide pipe 113 to form a counterclockwise cycle.

[0050] like Figure 5 As shown, the overall gas flow is a counterclockwise circulation, which drives the gas to be continuously heated; the cavity surrounded by the conveyor belt 104 and the upper cover 105 also has a counterclockwise circulation, which drives the tea leaves to flow and fix.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-efficiency tea leaf-killing device, comprising a base (101), wherein a drive shaft (102) is rotatably mounted on the base (101), and a conveyor belt (104) is provided on the drive shaft (102), the conveyor belt (104) being provided with holes, characterized in that: A base plate (116) is fixedly installed on the base (101). A top cover (105) and a heating rod (110) are fixedly installed on the base plate (116). The top cover (105) has an elliptical plate structure. A right guide plate (108), a left guide plate (109), and an installation strip (115) are fixedly installed on the top cover (105). A filter plate (117) is slidably installed on the installation strip (115). The right guide plate (108) and the left guide plate (109) have an arc-shaped structure and are inclined in opposite directions. The filter plate (117) has an arc-shaped structure and its protruding end faces downward toward the base plate (116).

2. The tea leaf sterilization device according to claim 1, characterized in that: An upper baffle (106) and a lower baffle (107) are fixedly installed on the upper cover (105) to seal both ends of the upper cover (105).

3. The tea leaf sterilization device according to claim 2, characterized in that: Multiple loosening rods (118) are fixedly installed on the upper baffle (106) for loosening tea leaves.

4. The tea leaf sterilization device according to claim 2, characterized in that: A side plate (103) is fixedly installed on the lower baffle (107). A connecting part is provided on the side plate (103), and the connecting part is provided with an arc surface that matches the inner wall of the upper cover (105).

5. The tea leaf sterilization device according to claim 4, characterized in that: An inclined through hole is provided on the connecting part of the lower baffle (107).

6. The tea leaf sterilization device according to claim 1, characterized in that: The filter plate (117) is provided with holes for gas exchange.

7. The tea leaf sterilization device according to claim 1, characterized in that: A duct (112) is fixedly installed on the base plate (116), and a guide pipe (113) is fixedly installed on the duct (112). The guide pipe (113) is provided with an arc-shaped structure, which is the same as the arc-shaped structure of the filter plate (117).

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