Installation structure of in-line heating pipe of leaf re-drying machine
By adopting a straight-line heating tube structure and an adjustable installation method driven by a servo motor in the blade re-drying machine, the problems of low heat exchange efficiency and condensation dripping in the existing technology are solved, achieving efficient heat exchange and simple heating tube maintenance.
Patent Information
- Application Number
- CN202520169761.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-24
AI Technical Summary
The existing blade re-drying machine uses a long spiral heating coil, which results in low heat exchange efficiency and is prone to condensation and dripping, affecting product quality.
It adopts a straight-line heating tube structure, including a front main tube, a rear main tube, and a heat dissipation tube. Adjustable installation is achieved through a bidirectional lead screw and hook plate driven by a servo motor. Combined with stainless steel piping and welded connections, it improves heat exchange rate and avoids condensation.
It improves the heat exchange rate, avoids condensation, reduces energy consumption, and simplifies the installation and maintenance process of the heating tube.
Smart Images

Figure CN223913441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating tube installation technology, specifically to a straight-line heating tube installation structure for a blade reheating machine. Background Technology
[0002] In the tobacco leaf re-drying process, the threshed tobacco leaves undergo three stages—drying, cooling, and rehumidification—in a leaf re-drying machine to adjust the moisture content of the tobacco leaves, remove impurities, kill pests and pathogens, facilitate subsequent aging and storage, and improve their sensory quality, preparing them for further processing. The rehumidification zone is equipped with a heating coil at the top to prevent condensation and dripping water from affecting the quality of the tobacco leaves in a high-temperature, high-humidity environment.
[0003] However, the currently used heating coils consist of a continuous, looped pipe with a long path, which easily leads to poor drainage in actual production. This results in lower coil temperatures, low heat exchange efficiency, and consequently, condensation and dripping, affecting product quality. To ensure product quality, we propose a straight-flow heating tube installation structure for the blade re-drying machine. Utility Model Content
[0004] The purpose of this invention is to provide a straight-line heating tube installation structure for a blade re-drying machine, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a straight-outlet heating tube installation structure for a blade reheating machine, comprising a front main tube and a rear main tube, wherein heat dissipation tubes are equidistantly arranged between the front main tube and the rear main tube, a steam outlet tube is provided on the outer side of the rear main tube, a steam inlet tube is provided at the end of the front main tube, and an installation plate is provided on the outside of the front main tube and the rear main tube, wherein the front main tube and the rear main tube are detachably mounted on the surface of the installation plate.
[0006] Preferably, the surface of the mounting plate is provided with a connecting groove, and a bidirectional lead screw is rotatably connected in the connecting groove through a bearing. A servo motor is fixedly installed at the end of the mounting plate, and the output shaft end of the servo motor is fixedly connected to the bidirectional lead screw. Slider blocks are symmetrically threaded to both ends of the bidirectional lead screw. A hook plate is fixedly connected to the end of the slider through the connecting groove. The two hook plates are symmetrically arranged, and the ends of the two hook plates are respectively connected to the outside of the front main pipe and the rear main pipe.
[0007] Preferably, the slider is slidably connected in the communicating groove, and the corresponding two inner walls of the communicating groove are provided with sliding grooves. The corresponding two side walls of the slider are integrally provided with protrusions, and the protrusions are slidably connected in the sliding grooves.
[0008] Preferably, the mounting plate is symmetrically provided with countersunk holes on one side of the front main pipe and the rear main pipe, and the countersunk holes are equidistant.
[0009] Preferably, the front main pipe, the heat dissipation pipe and the rear main pipe are all composed of long strip-shaped stainless steel pipes.
[0010] Preferably, the front main pipe, the heat dissipation pipe and the rear main pipe are all composed of long strip-shaped stainless steel pipes.
[0011] Preferably, the front main pipe, the heat dissipation pipe and the rear main pipe are all composed of long strip-shaped stainless steel pipes.
[0012] Compared with the prior art, the present application has the following beneficial effects:
[0013] 1. The present application is based on the process characteristics and heat exchange principle of the leaf tobacco redrying machine, fully considers the working condition of the heating coil and the product quality, abandons the heating mode of the annular heating coil in the traditional mode, and uses the straight-row heating pipe fixed on the top of the leaf tobacco redrying machine to heat, which shortens the path of each pipe of the heating pipe, increases the density of the heating pipe, avoids the condensation and water collection, greatly improves the heat exchange rate, and reduces the energy consumption of the leaf tobacco redrying machine.
[0014] 2. The two hook plates with adjustable spacing on the mounting plate are convenient for the installation of the straight-row heating pipe with different lengths, and the hook plates with adjustable length are also convenient for the disassembly and maintenance of the straight-row heating pipe, avoiding the time-consuming and laborious fixed installation and difficult disassembly and maintenance. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a schematic view of the connection structure of the front main pipe, the heat dissipation pipe and the rear main pipe of the present application.
[0016] Figure 2 It is a schematic view of the overall structure of the present application.
[0017] Figure 3 It is a schematic view of the mounting structure of the present application.
[0018] In the figure: 1, front main pipe; 2, heat dissipation pipe; 3, rear main pipe; 4, plug; 5, steam inlet pipe; 6, steam outlet pipe; 7, mounting plate; 8, communication groove; 9, bidirectional screw; 10, sliding block; 11, servo motor; 12, hook plate; 13, countersunk hole; 14, sliding groove. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0020] Please refer to Figure 1 , Figure 2 and Figure 3 , the utility model provides a technical scheme: a kind of straight row shape heating pipe mounting structure of blade redrying machine, including front main pipe 1 and rear main pipe 3, equidistantly arranged with radiator pipe 2 between front main pipe 1 and rear main pipe 3, the outside of rear main pipe 3 is provided with steam outlet pipe 6, the end of front main pipe 1 is provided with steam inlet pipe 5, and the outside of front main pipe 1 and rear main pipe 3 is provided with mounting plate 7, and front main pipe 1 and rear main pipe 3 can be detachably installed on the surface of mounting plate 7.
[0021] It should be noted that the side of front main pipe 1 is connected with steam inlet pipe 5, and the side is connected with each radiator pipe 2, which functions to receive high-temperature steam from steam inlet pipe 5 and supply steam to radiator pipe 2; straight row shape radiator pipe 2 is composed of multiple long strip-shaped stainless steel pipes, which are arranged in parallel between front main pipe 1 and rear main pipe 3, and have high density, which functions to reduce the flow path of steam in the pipe, improve the heat exchange rate, reduce the heat loss of steam in the pipe, and ensure smooth progress of steam in the heating pipe.
[0022] Please refer to Figure 3 , the surface of mounting plate 7 is provided with communication groove 8, and bidirectional screw rod 9 is rotatably connected in communication groove 8 through bearing, servo motor 11 is fixedly installed at the end of mounting plate 7, and the output shaft end of servo motor 11 is fixedly connected with bidirectional screw rod 9, and the two ends of bidirectional screw rod 9 are symmetrically connected with sliding block 10, the end of sliding block 10 is fixedly connected with hook plate 12 through communication groove 8, two hook plates 12 are symmetrically arranged, and the ends of two hook plates 12 are respectively connected on the outside of front main pipe 1 and rear main pipe 3.
[0023] It needs to be explained that the front main pipe 1 is composed of a long strip-shaped stainless steel pipeline, one side of which is connected with the steam inlet pipe 5, and the other side is connected with each heat dissipation pipe 2, which functions to receive high-temperature steam from the steam inlet pipe 5 and supply steam to the heat dissipation pipe 2; the straight-row heat dissipation pipe 2 is composed of a plurality of long strip-shaped stainless steel pipelines, which are arranged in parallel between the front main pipe 1 and the rear main pipe 3, and have a high density, which functions to reduce the flow path of steam in the pipeline, improve the heat exchange rate, reduce the heat loss of steam in the pipeline, and ensure the smooth flow of steam in the heating pipeline; the rear main pipe 3 is composed of a long strip-shaped stainless steel pipeline, one side of which is connected with the steam outlet pipe 6, and the other side is connected with each heat dissipation pipe 2, which functions to receive condensed water and residual steam in the heat dissipation pipe 2 and discharge them; the steam inlet pipe 5 and the steam outlet pipe 6 are connected with the water vapor system of the leaf curing machine, which is used to supply steam to the heating pipe and discharge condensed water and excess steam from the heating pipe; when installing, the mounting plate 7 is fixedly installed on the moisture regain area of the leaf curing machine through the countersunk screw, then the bidirectional screw rod 9 is driven to rotate by the servo motor 11, the distance between the two hook plates 12 is adjusted to be larger, the straight-row heating pipe is arranged between the two hook plates 12, the output shaft of the servo motor 11 is controlled to be reversed, the distance between the two hook plates 12 is adjusted to be smaller, and the two hook plates 12 are clamped on the outer sides of the front main pipe 1 and the rear main pipe 3, so that the straight-row pipe is fixed.
[0024] Please refer to Figure 3 The sliding block 10 is slidably connected in the communication groove 8, and the corresponding two inner walls of the communication groove 8 are provided with sliding grooves 14, and the corresponding two side walls of the sliding block 10 are integrally provided with protrusions which are slidably connected in the sliding grooves 14.
[0025] It needs to be explained that during the sliding process of the sliding block 10 in the communication groove 8, the protrusions on the sliding block 10 are slidably connected in the sliding grooves 14, which ensures the stable sliding of the sliding block 10 in the communication groove 8.
[0026] The mounting plate 7 is symmetrically and equidistantly provided with countersunk holes 13 on one side of the front main pipe 1 and the rear main pipe 3.
[0027] It needs to be explained that the countersunk holes 13 are arranged to facilitate the installation and fixation of the mounting plate 7.
[0028] Please refer to Figure 1 The front main pipe 1, the heat dissipation pipe 2 and the rear main pipe 3 are all composed of long strip-shaped stainless steel pipelines.
[0029] It needs to be explained that the pipeline made of long strip-shaped stainless steel pipelines has good heat conduction effect, high support strength and corrosion resistance, so that the service life of the straight-row heating pipe is longer.
[0030] Please refer to Figure 1 The front main pipe 1, the heat dissipation pipe 2 and the rear main pipe 3 are all composed of long strip-shaped stainless steel pipelines.
[0031] It should be noted that the welding fixation makes the pipes can be sealed well, thereby avoiding the risk of gas leakage, the stainless steel material itself has strong corrosion resistance, and the welded connection part, especially when high-quality welding, can ensure that the corrosion resistance of the joint is consistent with the rest of the pipe, and the welded connection can still maintain good stability in a high-temperature environment, while other connection methods may be loose or leak due to thermal expansion of the material.
[0032] Please refer to Figure 1 Both ends of the rear main pipe 3 are connected with plugs 4.
[0033] It should be noted that the plug 4 can block both ends of the rear main pipe 3 to prevent gas from escaping.
[0034] In addition, the terms "first", "second", "third", "fourth" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features, so the features with "first", "second", "third", "fourth" can be explicitly or implicitly include at least one of the features.
[0035] In the utility model, unless otherwise expressly provided and limited, the terms "installation", "setting", "connection", "fixing", "screw connection" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements, unless otherwise expressly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the specific circumstances by the ordinary skilled in the art.
[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A straight-line heating tube installation structure for a blade re-drying machine, characterized in that, The utility model provides a steam generator, including front main pipe (1) and rear main pipe (3), and the equal interval is arranged with the radiating pipe (2) between front main pipe (1) and rear main pipe (3), the outside of rear main pipe (3) is provided with steam outlet pipe (6), and the end of front main pipe (1) is provided with steam inlet pipe (5), and the outside of front main pipe (1) and rear main pipe (3) is provided with mounting plate (7), and front main pipe (1) and rear main pipe (3) can be detachably installed on the surface of mounting plate (7).
2. The straight discharge type heating tube mounting structure of a blade redrying machine according to claim 1, characterized in that: The surface of the mounting plate (7) is provided with a communication groove (8), and the bidirectional screw rod (9) is rotatably connected in the communication groove (8) through a bearing, the servo motor (11) is fixedly installed at the end of the mounting plate (7), and the output shaft end of the servo motor (11) is fixedly connected with the bidirectional screw rod (9), the two ends of the bidirectional screw rod (9) are symmetrically connected with the sliding block (10) through threads, the end of the sliding block (10) is fixedly connected with the hook plate (12) through the communication groove (8), the two hook plates (12) are symmetrically arranged, and the ends of the two hook plates (12) are respectively connected to the outer sides of the front main pipe (1) and the rear main pipe (3).
3. The straight discharge type heating tube mounting structure of a blade redrying machine according to claim 2, characterized in that: The sliding block (10) is slidably connected in the communication groove (8), and the corresponding two inner walls of the communication groove (8) are provided with sliding grooves (14), the corresponding two side walls of the sliding block (10) are integrally provided with protrusions, and the protrusions are slidably connected in the sliding grooves (14).
4. The straight discharge type heating tube mounting structure of a blade redrying machine according to claim 2, characterized in that: The mounting plate (7) is symmetrically and equidistantly provided with counterbores (13) on one side of the front main pipe (1) and the rear main pipe (3).
5. The straight discharge type heating tube mounting structure of a blade redrying machine according to claim 1, characterized in that: The front main pipe (1), the radiating pipe (2) and the rear main pipe (3) are all composed of long strip-shaped stainless steel pipelines.
6. The straight discharge type heating tube mounting structure of a blade redrying machine according to claim 1, characterized in that: The front main pipe (1), the radiating pipe (2) and the rear main pipe (3) are all composed of long strip-shaped stainless steel pipelines.
7. The straight discharge type heating tube mounting structure of a blade redrying machine according to claim 1, characterized in that: The two ends of the rear main pipe (3) are connected with plugs (4).