Net plate side chain cleaning device of tobacco redrying machine

Abstract

The utility model belongs to the technical field of cleaning equipment, and particularly relates to a tobacco redrying machine net plate side chain cleaning device which comprises steam cleaning pipelines and nozzles, the steam cleaning pipelines are connected with a steam header pipe of a tobacco redrying machine, the steam cleaning pipelines are divided into two groups, and each group of steam cleaning pipelines comprises a main pipe and a first branch pipe; the first branch pipe is communicated with the main pipe, the first branch pipe is arranged below the redrying machine screen plate, a plurality of steam spraying holes are uniformly formed right above the first branch pipe, and steam in the first branch pipe can form uniform steam flow through the steam spraying holes to wash the screen plate; the first branch pipe is further provided with a nozzle used for cleaning the side chain. According to the cleaning device for the side chain of the screen plate of the tobacco redrying machine, the two groups of steam cleaning pipelines are arranged, residual steam in the steam header pipe of the tobacco redrying machine can be directly used for flushing the conveying mesh belt, the two groups of steam cleaning pipelines are spaced by a certain distance so as to realize graded cleaning of the conveying mesh belt, and the cleaning effect is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a cleaning device for the side chain of a tobacco re-drying machine mesh plate. Background Technology

[0002] The tobacco sheet re-drying machine is a key piece of equipment in the tobacco sheet re-drying processing line. It is mainly used to adjust the moisture content of the tobacco sheets, remove impurities, and kill pests and pathogens, making the tobacco sheets more suitable for long-term storage, aging, and fermentation, and ensuring the stability and consistency of tobacco sheet quality. The conveyor belt, as one of the important components of the tobacco sheet re-drying machine, carries the tobacco sheets through different areas of the machine to complete drying, cooling, and rehumidification processes. A typical conveyor belt usually consists of stainless steel mesh plates, side chains, pins, and fish-scale-like structures. In actual operation, the chain assembly of the conveyor belt requires regular addition of food-grade lubricating oil to ensure smooth operation. However, in high-temperature and high-humidity working environments, the soot and ash generated during production easily adhere to the conveyor belt due to the humid and hot environment, forming soot deposits. Soot not only hinders the effective transfer of lubricating oil, reducing lubrication and causing abnormal noises during chain operation, but also, with the continuous accumulation of oil and soot, the chain structure is more prone to aging and disassembly, severely affecting the normal operation of the re-drying machine. Furthermore, when soot adheres to the surface of the stainless steel mesh, it clogs the mesh openings, reducing the mesh's porosity and affecting the uniformity of moisture content after drying. In particular, once the soot attached to the conveyor belt loosens and falls off, it will directly fall into the finished tobacco leaves, posing a significant threat to product quality.

[0003] In existing technologies, manual cleaning of conveyor belt components is typically performed periodically. However, this periodic cleaning and maintenance method is easily constrained by production time and cannot provide reliable cleaning. Cleaning generally requires the conveyor belt to be running independently, posing certain safety hazards, and is time-consuming, labor-intensive, and costly. While it can clean the stainless steel mesh and side chain surfaces of some degree, cleaning hard-to-reach areas is extremely difficult, especially the back of the mesh. Therefore, this application aims to provide a cleaning device that can automatically clean the mesh and side chain of a tobacco re-drying machine. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cleaning device for the side chain of the mesh plate of a tobacco re-drying machine.

[0005] The technical solution of this utility model is: a cleaning device for the side chain of a tobacco re-drying machine mesh plate, including a steam cleaning pipe and nozzles. The steam cleaning pipe is connected to the main steam pipe of the tobacco re-drying machine. The steam cleaning pipe is divided into two groups, each group of steam cleaning pipes including a main pipe and a first branch pipe. The first branch pipe is connected to the main pipe and is located below the mesh plate of the re-drying machine. Several steam injection holes are evenly arranged above the first branch pipe. The steam in the first branch pipe can form a uniform steam flow through the steam injection holes to rinse the mesh plate. The first branch pipe is also equipped with nozzles, which are located near the side chain of the re-drying machine for cleaning the side chain.

[0006] Furthermore, each set of steam cleaning pipes also includes a second branch pipe, which is connected to the main pipe; nozzles are also installed on the second branch pipe.

[0007] Furthermore, the main pipes of the two sets of steam cleaning pipes are connected to the main steam pipe via a tee. A steam pneumatic diaphragm valve is installed on the main steam pipe to control whether steam in the main steam pipe enters the main pipe.

[0008] Furthermore, each main pipe is equipped with a shut-off valve on the side closest to the main steam pipe. The shut-off valve can individually control whether steam in the corresponding main pipe can flow to the first branch pipe or the second branch pipe.

[0009] Furthermore, the first and second branch pipes in the same group are arranged vertically and horizontally in parallel.

[0010] Furthermore, a nozzle is provided on the second branch pipe directly above the side chain, while the nozzle on the first branch pipe is located directly below the side chain.

[0011] Furthermore, both the first and second branch pipes use adjustable-angle nozzles. For example, fan-shaped nozzles can be used, allowing the steam to form a specific spray shape and angle, effectively cleaning the side chains, lugs, and corners of the conveyor belt in the reheating machine. In some designs, the nozzles can also be installed on the steam cleaning pipe using adjustable-angle connectors, similarly allowing for adjustment of the steam rinsing angle.

[0012] Furthermore, the main pipe and the first branch pipe in the steam cleaning pipeline are both made of Φ50 seamless steel pipe; the second branch pipe is made of Φ25 seamless steel pipe. The main pipe and the first branch pipe are welded together using Φ50 seamless steel pipe. This design ensures that there is sufficient storage space for steam within the pipeline, and the seamless steel pipe can withstand the pressure and temperature of the steam, ensuring the safe and stable operation of the system.

[0013] Furthermore, the two sets of steam cleaning pipes are spaced apart, allowing them to clean the mesh and side chains of the tobacco re-drying machine sequentially.

[0014] Furthermore, the second branch pipe also has a nozzle located directly above the fish scales, which is specifically designed for cleaning the fish scales.

[0015] The beneficial effects of this utility model are:

[0016] 1. The cleaning device for the mesh plate and side chain of the tobacco re-drying machine of this utility model is equipped with two sets of steam cleaning pipes. It can directly use the residual steam in the steam main pipe of the tobacco re-drying machine to wash the conveyor belt. The two sets of steam cleaning pipes are spaced a certain distance apart to achieve graded cleaning of the conveyor belt. That is, one set of steam cleaning pipes can first wash and soften the dirt attached to the back of the mesh plate and the side chain. Then, the other set of steam cleaning pipes can thoroughly clean the dirt attached to the mesh plate and the side chain again. The cleaning effect is significantly improved. According to the test, after cleaning the conveyor belt with the cleaning device of this application, the open area of ​​the mesh plate can be increased from 80% to 100%, effectively ensuring the quality of tobacco processing, and the moisture variation coefficient can be improved from meeting the standard to achieving excellence.

[0017] 2. The device of this utility model uses the residual steam in the steam main pipe after the reheating machine is shut down as a cleaning medium. It not only avoids additional energy waste, but also depressurizes the steam in the entire steam main pipe. After depressurization, the steam pipe pressure drops from 0.8MPa to 0.3MPa, which effectively reduces the amount of condensate in the steam main pipe. This helps to prevent steam pipe vibration, impact and water hammer, and reduces equipment failure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the model after installation according to Embodiment 1 of this utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of a set of steam cleaning pipes in Embodiment 1 of this utility model;

[0020] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0021] Figure 4 This is a schematic diagram of the layout of the two sets of steam cleaning pipes in Embodiment 1 of this utility model;

[0022] In the diagram: 1. Steam pneumatic diaphragm valve; 2. Shut-off valve; 3. Nozzle; 4. Steam cleaning pipe; 41. Main pipe; 42. First branch pipe; 421. Steam injection hole; 43. Second branch pipe; 5. Side chain; 6. Mesh plate; 7. Fish scale. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art.

[0024] Example 1

[0025] like Figure 1-4 As shown, this embodiment is a cleaning device for the side chain of a tobacco re-drying machine mesh plate, including a steam cleaning pipe 4 and nozzles 3. The steam cleaning pipe 4 is connected to the main steam pipe of the tobacco re-drying machine. The steam cleaning pipe 4 is divided into two groups, serving as a primary cleaning steam pipe and a secondary cleaning steam pipe, respectively. Each group of steam cleaning pipes 4 includes a main pipe 41 and a first branch pipe 42. The first branch pipe 42 is connected to the main pipe 41 and is located below (on the back) of the re-drying machine mesh plate 6. Several steam injection holes 421 are evenly arranged above the first branch pipe 42. The steam in the first branch pipe 42 can form a uniform steam flow through the steam injection holes 421 to rinse the back of the mesh plate 6. The first branch pipe 42 is also equipped with nozzles 3, which are located near the side chain 5 of the re-drying machine for cleaning the side chain 5.

[0026] In this embodiment, each set of steam cleaning pipes 4 also includes a second branch pipe 43, which is connected to the main pipe 41; a nozzle 3 is also provided on the second branch pipe 43. The main pipes 41 of the two sets of steam cleaning pipes 4 are connected to the steam main pipe through a tee, and a steam pneumatic diaphragm valve 1 is provided on the steam main pipe to control whether steam in the steam main pipe enters the main pipe 41. A shut-off valve 2 is provided on the side of each main pipe 41 near the steam main pipe. The shut-off valve 2 can individually control whether steam in the corresponding main pipe 41 can flow to the first branch pipe 42 or the second branch pipe 43.

[0027] In this embodiment, the first branch pipe 42 and the second branch pipe 43 in the same group are arranged vertically and parallel to each other. A nozzle 3 is provided on the second branch pipe 43 directly above the side chain 5, and the nozzle 3 on the first branch pipe 42 is positioned directly below the side chain 5. This ensures that the side chain 5 has nozzles 3 on both its upper and lower sides, allowing for thorough cleaning of the side chain 5. The second branch pipe 43 is also equipped with a nozzle 3 specifically for cleaning the fish scales 7.

[0028] In this embodiment, the nozzles 3 on the first branch pipe 42 and the second branch pipe 43 are both adjustable angle fan-shaped nozzles 3. In this way, the steam can form a specific spray shape and angle under the action of the fan-shaped nozzles 3, thereby effectively cleaning the mesh plate 6, side chain 5, ear seat, and fish scale 7 in the reheating machine conveyor belt, as well as the dead corners.

[0029] In this embodiment, the main pipe 41 and the first branch pipe 42 in the steam cleaning pipeline 4 are both made of Φ50 seamless steel pipe; the second branch pipe 43 is made of Φ25 seamless steel pipe. Both the main pipe 41 and the first branch pipe 42 are welded from Φ50 seamless steel pipe. This design ensures sufficient storage space for steam within the pipeline, and the seamless steel pipe can withstand the pressure and temperature of the steam, ensuring the safe and stable operation of the system. The diameter of the steam injection hole 421 on the first branch pipe 42 is 3mm. The second branch pipe 43 has a smaller diameter than the first branch pipe 42 because the second branch pipe 43 does not require a steam injection hole 421; a smaller diameter saves costs and also helps ensure that the injection pressure of the two branch pipes is comparable.

[0030] In this embodiment, the two sets of steam cleaning pipes 4 are spaced apart, with a distance between them, so that the two sets of steam cleaning pipes 4 clean the mesh plate 6 and the side chain 5 of the tobacco re-drying machine in turn.

[0031] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various combinations and modifications of the aforementioned technical features. Any improvements, modifications, equivalent substitutions, or applications of the structure or method of the present utility model to other fields to achieve the same effect without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A tobacco redrying machine net plate side chain cleaning device, characterized in that: The steam total pipe, the steam cleaning pipeline and the nozzle of the tobacco redrying machine are included, the steam cleaning pipeline is connected with the steam total pipe of the tobacco redrying machine, the steam cleaning pipeline is divided into two groups, each group includes the main pipe and the first branch pipe, the first branch pipe is communicated with the main pipe, the first branch pipe is arranged below the redrying machine screen, a plurality of steam holes are uniformly arranged above the first branch pipe, the steam in the first branch pipe forms uniform steam flow through the steam holes, and the screen is washed; the nozzle is further arranged on the first branch pipe, the nozzle is arranged at the position close to the redrying machine side chain, and the side chain is cleaned.

2. The device according to claim 1, wherein: The second branch pipe is further arranged on each group of steam cleaning pipelines, and the second branch pipe is communicated with the main pipe.

3. The device according to claim 2, wherein: The main pipes of the two groups of steam cleaning pipelines are connected with the steam total pipe through a tee joint, a steam pneumatic diaphragm valve is arranged on the steam total pipe, and the steam in the steam total pipe is controlled to enter the main pipe through the steam pneumatic diaphragm valve.

4. The device according to claim 2, wherein: A stop valve is arranged on one side of each main pipe close to the steam total pipe.

5. The device of claim 2, wherein: The first branch pipe and the second branch pipe in the same group are arranged in a corresponding upper and lower mode.

6. The device of claim 3, wherein: The nozzle on the second branch pipe is arranged above the side chain, and the nozzle on the first branch pipe is arranged below the side chain.

7. The device according to claim 2, wherein: The nozzles on the first branch pipe and the second branch pipe are adjustable angle nozzles.

8. The device of claim 7, wherein: The adjustable angle nozzle is a fan-shaped nozzle.

9. The device of claim 1, wherein: The main pipe and the first branch pipe in the steam cleaning pipeline are Φ50 seamless steel pipes; the second branch pipe is a Φ25 seamless steel pipe.

10. The device of claim 1, wherein: The two groups of steam cleaning pipelines are arranged in a gap mode, so that the two groups of steam cleaning pipelines clean the screen and the side chain of the tobacco redrying machine in sequence.

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