A tobacco leaf curing machine screen online cleaning device

Abstract

This utility model discloses an online cleaning device for the mesh plate of a tobacco leaf curing machine. It is installed in the re-curing and rehydration section of the tobacco leaf curing machine and includes two sets of rinsing mechanisms fixedly installed above and below the mesh plate. Each set of rinsing mechanisms includes at least one rinsing component, which includes a Venturi tube. The Venturi tube includes a contraction tube and a diffusion tube. The end of the contraction tube has an air inlet connected to a steam supply system. The connection between the contraction tube and the diffusion tube has a liquid inlet connected to a water supply system. The end of the diffusion tube has an outlet connected to a steam-water mixture conveying pipe. The end of the steam-water mixture conveying pipe is connected to a rinsing pipe, which has several nozzles spaced along its length. This device can effectively remove tobacco residue (including oil residue) from the mesh plate, and it cleans automatically without damaging the mesh belt guard plate.

Description

Technical Field

[0001] This utility model relates to the field of tobacco curing machine maintenance technology, and in particular to an online cleaning device for the mesh plate of a tobacco curing machine. Background Technology

[0002] Cleaning the mesh plates of the tobacco drying machine during the re-drying process is a major challenge in tobacco drying production. The soot and grease adhering to the mesh plates, after prolonged operation, easily fall into the tobacco leaves, affecting their quality. Furthermore, the soot (including grease) clogs the mesh plates, and the ventilation at the clogged areas differs from other areas, causing uneven moisture distribution in the re-dried tobacco leaves. Currently, most re-drying plants clean the mesh plates of their drying machines manually by scraping them during regular maintenance. This cleaning method is tedious, time-consuming, and labor-intensive. Moreover, the manual scraping process can easily damage the mesh belt guards, affecting their lifespan. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an online cleaning device for the mesh plate of a tobacco curing machine, so as to solve the technical problem that manual cleaning of the mesh plate of the curing machine is time-consuming and labor-intensive and may damage the mesh belt guard plate.

[0004] The objective of this utility model is achieved through the following technical solution: An online cleaning device for the screen of a tobacco curing machine is provided. It is installed in the re-curing and rehydration section of the tobacco curing machine. The device includes two sets of rinsing mechanisms fixedly installed above and below the screen, respectively, capable of rinsing the screen. Each set of rinsing mechanisms includes at least one rinsing component. Each rinsing component includes a Venturi tube, which comprises a converging tube and a diffuser tube. The converging tube has an air inlet at its end, connected to a steam supply system. A liquid inlet is located at the connection between the converging tube and the diffuser tube, connected to a water supply system. The diffuser tube has an outlet at its end, connected to a steam-water mixture conveying pipe. The end of the steam-water mixture conveying pipe is connected to a rinsing pipe, which has several nozzles spaced along its length.

[0005] Furthermore, both the steam supply system and the water supply system include flow regulating valves.

[0006] Furthermore, it also includes a mounting frame, the top of which is connected to the top coil rack of the wafer roaster, the bottom of which is connected to the bottom wall of the wafer roaster, and the sides are located outside the fish scale plates on both sides of the wafer roaster. Each rinsing pipe above the mesh plate is connected to the upper part of the mounting frame through a connector, and each rinsing pipe below is connected to the lower part of the mounting frame through a connector.

[0007] Furthermore, the connecting component is a lifting structure.

[0008] Furthermore, the lifting structure consists of two sets, with the two sets of lifting structures located at both ends of the flushing pipe.

[0009] Furthermore, each rinsing mechanism includes two rinsing components, which are spaced apart along the length of the mesh plate.

[0010] Furthermore, the flushing pipe is arranged along the width direction of the mesh plate.

[0011] The beneficial effects of this utility model are: The online cleaning device for the mesh plates of a tobacco curing machine proposed in this utility model employs two sets of rinsing mechanisms to rinse both sides of the mesh plates. Each set of rinsing mechanisms uses a Venturi tube to mix steam and water into a high-velocity steam-water mixture at approximately 100 degrees Celsius. This high-velocity steam-water mixture at approximately 100 degrees Celsius rinses the mesh plates, effectively removing tobacco residue (including oil stains) and providing automatic cleaning without damaging the conveyor belt guards. The Venturi tube enhances the mixing effect of steam and water and increases the flow rate of the steam-water mixture without requiring additional power.

[0012] The mixing ratio of steam and water can be controlled by a flow regulating valve.

[0013] The installation framework facilitates installation.

[0014] The spray distance can be adjusted by setting up a lifting structure.

[0015] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein: Figure 1 This is a perspective view of the present utility model.

[0017] Figure 2 This is a perspective view of the present invention from another angle.

[0018] Figure 3 This is the front view of the present utility model.

[0019] Figure 4 This is a diagram showing the usage state of this utility model.

[0020] In the diagram: 1. Installation frame; 2. Fish scale plate; 3. Mesh plate; 4. Venturi tube; 5. Steam supply system; 6. Water supply system; 7. Steam-water mixture delivery pipe; 8. Flushing pipe; 9. Nozzle; 10. Lifting structure. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0022] Example 1 like Figure 1 The online cleaning device for the tobacco curing machine mesh plate shown is installed in the re-curing and re-moistening section of the tobacco curing machine. It includes a stainless steel mounting frame 1, with its top connected to the top coil rack of the curing machine, its bottom connected to the bottom wall of the curing machine, and its sides located outside the fish scale plates 2 on both sides of the curing machine. It also includes two sets of rinsing mechanisms, which are respectively fixedly connected to the mounting frame 1 above and below the mesh plate 3. The two sets of rinsing mechanisms rinse both sides of the mesh plate. Each set of rinsing mechanisms includes two rinsing components, which are spaced apart along the length of the mesh plate 3. The rinsing assembly includes a Venturi tube 4, which includes a contraction tube and a diffuser tube. The end of the contraction tube is provided with an air inlet, which is connected to a steam supply system 5. The connection between the contraction tube and the diffuser tube is provided with a liquid inlet, which is connected to a water supply system 6. The end of the diffuser tube is provided with an outlet, which is connected to a steam-water mixture conveying pipe 7. The end of the steam-water mixture conveying pipe 7 is connected to a rinsing pipe 8. Several nozzles 9 are evenly spaced along the length of the rinsing pipe 8. The nozzles 9 are high-pressure nozzles. The rinsing pipes 8 are arranged along the width of the mesh plate 3. Each rinsing pipe 8 above the mesh plate 3 is connected to the upper part of the mounting frame 1 through a connector. Each rinsing pipe 8 above and below the mesh plate 3 is connected to the lower part of the mounting frame 1 through a connector. Steam supply system 5 includes a main steam supply pipe, one end of which is connected to a steam generator, and the other end is connected to four branch steam supply pipes. The ends of the four branch pipes are connected to the air inlets of four Venturi tubes 4. The main steam supply pipe is equipped with a flow regulating valve. The steam supply system supplies steam at a pressure of approximately 4 kgf / cm². Water supply system 6 includes a main water supply pipe, one end of which is connected to a water source, and the other end is connected to four branch water supply pipes. The four branch pipes are connected to the liquid inlets of four Venturi tubes 4. The main water supply pipe is equipped with a flow regulating valve and a pump. The water supply system supplies water at a pressure of approximately 3 kgf / cm². The steam temperature supplied by steam supply system 5 must be maintained at approximately 100 degrees Celsius after mixing with water. The flow regulating valves of both steam supply system 5 and water supply system 6 control the steam-to-water ratio.

[0023] Example 2 Based on Embodiment 1, the connecting parts consist of two sets of lifting structures 10. There are many types of lifting structures 10, such as electric telescopic rods, hydraulic telescopic rods, and pneumatic telescopic rods. The two sets of lifting structures 10 are located at both ends of the flushing pipe 8. The spray distance of the nozzle is adjusted by setting the lifting structures 10.

[0024] This utility model discloses an online cleaning device for the mesh plates of a tobacco curing machine. It employs two sets of rinsing mechanisms to rinse both sides of the mesh plate 3. Each set of rinsing mechanisms uses a Venturi tube 4 to mix steam and water into a high-velocity steam-water mixture at approximately 100 degrees Celsius. This high-velocity steam-water mixture rinses the mesh plate 3, effectively removing tobacco residue (including oil stains) and automatically cleaning without damaging the mesh belt guards. The Venturi tube 4 enhances the mixing effect of steam and water and increases the flow rate of the steam-water mixture without requiring additional power. The wastewater after rinsing is collected and treated uniformly through the wastewater discharge port of the rehumidification section.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An online cleaning device for the mesh plate of a tobacco leaf curing machine, characterized in that: It is set in the re-drying and re-moistening section of flue-cured tobacco leaves, including two sets of rinsing mechanisms that are fixed above and below the mesh plate (3) respectively. Each set of rinsing mechanisms includes at least one rinsing component. The rinsing component includes a Venturi tube (4). The Venturi tube (4) includes a contraction tube and a diffusion tube. The end of the contraction tube is provided with an air inlet. The air inlet is connected to a steam supply system (5). The connection between the contraction tube and the diffusion tube is provided with a liquid inlet. The liquid inlet is connected to a water supply system (6). The end of the diffusion tube is provided with an outlet. The outlet is connected to a steam-water mixture conveying pipe (7). The end of the steam-water mixture conveying pipe (7) is connected to a rinsing pipe (8). Several nozzles (9) are spaced along the length of the rinsing pipe (8).

2. The online cleaning device for the mesh plate of a tobacco leaf curing machine according to claim 1, characterized in that: Both the steam supply system (5) and the water supply system (6) include flow regulating valves.

3. The online cleaning device for the mesh plate of a tobacco leaf curing machine according to claim 1, characterized in that: It also includes an installation frame (1), the top of which is connected to the top coil rack of the baking machine, the bottom of which is connected to the bottom wall of the baking machine, and the sides are located outside the fish scale plates (2) on both sides of the baking machine. Each rinsing pipe (8) above the mesh plate (3) is connected to the upper part of the installation frame (1) by a connector, and each rinsing pipe (8) above and below is connected to the lower part of the installation frame (1) by a connector.

4. The online cleaning device for the mesh plate of the tobacco leaf curing machine according to claim 3, characterized in that: The connecting component is a lifting structure (10).

5. The online cleaning device for the mesh plate of a tobacco leaf curing machine according to claim 4, characterized in that: The lifting structure (10) consists of two sets, with the two sets of lifting structures (10) located at both ends of the flushing pipe (8).

6. The online cleaning device for the mesh plate of a tobacco leaf curing machine according to any one of claims 1-5, characterized in that: Each set of rinsing mechanisms includes two rinsing components, which are spaced apart along the length of the mesh plate (3).

7. The online cleaning device for the mesh plate of a tobacco leaf curing machine according to claim 1, characterized in that: The flushing pipe (8) is arranged along the width direction of the mesh plate (3).

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