Large-diameter high-linear-pressure low-rotating-speed steel drying cylinder

Abstract

The utility model discloses a large-diameter high-linear-pressure low-rotating-speed steel drying cylinder, and relates to the technical field of papermaking equipment. The shaft sleeve is connected with the transmission side shaft; the spherical crown type end socket is welded and fixed with the shaft sleeve; the cylinder body is welded with the spherical crown type end socket to form a cylinder body; the manhole device is mounted on the barrel; the operation side shaft is connected with the other end of the cylinder body, and the operation side shaft and the cylinder body are coaxial; according to the technical scheme, the transmission side shaft is in interference fit or key connection with the shaft sleeve, the spherical crown type end socket is fixedly welded with the shaft sleeve, and the end socket is arranged in a spherical crown shape, so that internal pressure can be better dispersed, local stress concentration is reduced, the cylinder body and the spherical crown type end socket are welded to form a complete cylinder body, and the service life of the cylinder body is prolonged. The length and the diameter of the barrel can be flexibly adjusted according to actual requirements, the production cost is reduced, the operation side shaft is connected with the other end of the barrel through a flange or in other modes, the coaxiality of the operation side shaft and the cylinder body is ensured, and the operation stability of the whole system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking equipment, in particular to a large-diameter, high-line-pressure, low-speed steel drying cylinder. Background Art

[0002] In the papermaking, textile and other industrial fields, drying cylinders are one of the commonly used drying equipment, mainly used to remove moisture from materials and improve product quality and production efficiency. Traditional drying cylinders have the following problems:

[0003] Complex structure: The structure of traditional drying cylinder is relatively complex, the production and assembly costs are high, and maintenance and repair are inconvenient.

[0004] Poor operating stability: Due to the poor coaxiality of the transmission side shaft and the operating side shaft, the equipment is prone to vibration and noise during operation, affecting the service life and working efficiency of the equipment.

[0005] Insufficient sealing performance: The sealing performance of the manhole device and the head is poor, and leakage is prone to occur under high temperature and high pressure environments, which not only affects the drying effect but also may bring safety hazards.

[0006] Insufficient material strength: Some key components, such as high-strength screws, are not made of sufficient material and are prone to loosening or damage after long-term operation, affecting the stability and safety of the equipment.

[0007] Improper heat treatment: The internal stress of the drying cylinder after welding is not effectively eliminated, which causes the equipment to deform and crack easily under high temperature and high pressure environment, affecting the stability and reliability of the overall structure. Utility Model Content

[0008] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a large-diameter, high-line-pressure, low-speed steel drying cylinder to solve the problems in the background art.

[0009] In view of this, the utility model provides a large-diameter, high-line-pressure, low-speed steel drying cylinder, comprising:

[0010] Drive side shaft;

[0011] a shaft sleeve connected to the transmission side shaft;

[0012] A spherical cap head is welded and fixed to the shaft sleeve;

[0013] The cylinder body is welded with the spherical cap head to form a cylinder body, which has a reasonable structure, is easy to produce and assemble, and reduces costs;

[0014] The manhole device is installed on the cylinder, with a simple configuration and easy maintenance and operation;

[0015] An operating side shaft is connected to the other end of the cylinder body, and the coaxiality of the operating side shaft and the cylinder body is improved;

[0016] High-strength screws are used to cold-fit the transmission side shaft and the operating side shaft onto the cylinder body and fasten them into a whole. High-strength materials are used to ensure reliable connection.

[0017] The head reinforcement ribs are welded to the spherical head to enhance the strength of the head and ensure safety in high temperature and high pressure environments.

[0018] Optionally, the cylinder body is subjected to an electric furnace annealing treatment after welding to eliminate internal stress and improve the stability and reliability of the overall structure.

[0019] Optionally, the high-strength screws are made of high-strength materials and can withstand large torques, thereby ensuring long-term stable operation of the drying cylinder and facilitating disassembly and maintenance.

[0020] Optionally, a sealing ring is provided on the manhole device to ensure good sealing performance in a high temperature and high pressure environment to prevent leakage.

[0021] Optionally, the transmission side shaft and the operating side shaft are respectively connected to the cylinder body through bearing seats.

[0022] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0023] 1. The utility model is a large-diameter, high-line-pressure, low-speed steel drying cylinder. The connection between the transmission side shaft and the sleeve adopts an interference fit or key connection to ensure that there is no relative sliding during the transmission process. The spherical cap head is welded and fixed to the sleeve. The head adopts a spherical cap shape to better disperse the internal pressure and reduce local stress concentration. The cylinder body and the spherical cap head are welded to form a complete cylinder body. The weld undergoes strict quality inspection to ensure that there are no defects. The length and diameter of the cylinder body can be flexibly adjusted according to actual needs, reducing production costs. The operating side shaft is connected to the other end of the cylinder body by a flange or other form to ensure coaxiality with the cylinder body and improve the operating stability of the entire system. The transmission side shaft and the operating side shaft are respectively connected to the cylinder body through bearing seats, ensuring flexible and smooth rotation of the shaft system, reducing friction loss and extending the service life of the equipment.

[0024] 2. This utility model utilizes a large-diameter, high-line-pressure, low-speed steel drying cylinder. Using high-strength alloy steel, the high-strength screws provide excellent tensile strength and corrosion resistance. They maintain sufficient hardness and toughness at high temperatures, ensuring safe and stable operation. The high-strength screws facilitate disassembly and maintenance, ensuring secure connections throughout long-term operation.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a side sectional view of the utility model.

[0029] Explanation of the accompanying symbols: 1. Transmission side shaft; 2. Bushing; 3. Spherical cap head; 4. Cylinder; 5. Manhole device; 6. Operation side shaft; 7. High-strength screw; 8. Head reinforcement rib. DETAILED DESCRIPTION

[0030] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0031] The following describes in detail a large-diameter, high-line-pressure, low-speed steel drying cylinder according to an embodiment of the present invention with reference to the accompanying drawings.

[0032] Example

[0033] For easier understanding, see Figures 1 to 2 The utility model provides an embodiment of a large-diameter, high-line-pressure, low-speed steel drying cylinder, comprising:

[0034] Transmission side shaft 1;

[0035] A shaft sleeve 2 connected to the transmission side shaft 1;

[0036] The spherical cap head 3 is welded and fixed to the shaft sleeve 2;

[0037] The cylinder body 4 is welded with the spherical cap head 3 to form a cylinder body, which has a reasonable structure, is easy to produce and assemble, and reduces costs;

[0038] The manhole device 5 is installed on the cylinder 4, which is simple and easy to maintain and operate;

[0039] The operating side shaft 6 is connected to the other end of the cylinder 4, and the coaxiality of the operating side shaft 6 and the cylinder body is improved;

[0040] High-strength screws 7 are used to cold-fit the transmission-side shaft 1 and the operating-side shaft 6 onto the cylinder body and fasten them into a whole. They are made of high-strength material to ensure a reliable connection.

[0041] The head reinforcement rib 8 is welded to the spherical head 3 to enhance the strength of the head and ensure safety in high temperature and high pressure environments.

[0042] It should be noted that the transmission-side shaft 1 and sleeve 2 are precision-machined to ensure a tight fit. The sleeve 2 and transmission-side shaft 1 can be connected using an interference fit or keyed connection to ensure no relative slippage during transmission. The spherical cap-shaped head 3 is secured to the sleeve 2 by welding. The spherical cap shape of the head better disperses internal pressure and reduces localized stress concentration.

[0043] The cylinder body 4 is welded to the spherical cap 3 to form a complete cylinder. The welds undergo rigorous quality inspection to ensure they are free of defects. To facilitate production and assembly, the length and diameter of the cylinder body 4 can be flexibly adjusted according to actual needs. A manhole assembly 5 is mounted on the cylinder body 4 and equipped with a quick-opening mechanism for easy maintenance and cleaning. A high-temperature and high-pressure resistant sealing ring is also installed on the manhole assembly 5 to ensure a good seal during operation.

[0044] The operating-side shaft 6 is connected to the other end of the cylinder 4 via a flange or other means to ensure coaxiality with the cylinder body, enhancing the smooth operation of the entire system. High-strength screws 7 are used to cold-assemble the transmission-side shaft 1 and the operating-side shaft 6 onto the cylinder body. Made of high-strength material, they ensure a secure connection during long-term operation. Head reinforcement ribs 8 are welded to the spherical head 3, increasing the rigidity and strength of the head area, making it particularly suitable for use in applications with high internal pressures.

[0045] In some embodiments, the cylinder body is subjected to an electric furnace annealing treatment after welding to eliminate internal stress and improve the stability and reliability of the overall structure.

[0046] It should be noted that after all welding processes are completed, the cylinder body needs to be placed in an electric furnace for annealing treatment. The purpose is to eliminate the internal stress generated during the welding process and improve the overall stability and service life of the cylinder body.

[0047] In some embodiments, the high-strength screws 7 are made of high-strength materials and can withstand large torques, thereby ensuring long-term stable operation of the drying cylinder and facilitating disassembly and maintenance.

[0048] It should be noted that the high-strength screws 7 are made of high-strength alloy steel, which has good tensile strength and corrosion resistance, and can maintain sufficient hardness and toughness under high temperature conditions to ensure the safe and stable operation of the drying cylinder.

[0049] In some embodiments, a sealing ring is provided on the manhole device 5 to ensure good sealing performance in a high temperature and high pressure environment to prevent leakage.

[0050] It should be noted that the sealing ring on the manhole device 5 is made of high temperature resistant and aging resistant materials, such as silicone rubber or fluororubber, to ensure that it still maintains an excellent sealing effect under high temperature and high pressure environment, effectively prevents steam leakage, and ensures safe operation.

[0051] In some embodiments, the transmission side shaft 1 and the operating side shaft 6 are respectively connected to the cylinder body through bearing seats.

[0052] It should be noted that the transmission side shaft 1 and the operating side shaft 6 are both connected to the cylinder body through dedicated bearing seats. Rolling bearings or sliding bearings are installed in the bearing seats to ensure that the shaft system rotates flexibly and smoothly, reduce friction loss, and extend the service life of the equipment.

[0053] Working Principle: Before starting, first check that all components of the dryer are properly installed, especially the seals of the manhole assembly 5. Ensure the seals are intact to prevent leakage during operation. Check the coaxiality of the drive-side shaft 1 and the operating-side shaft 6 to ensure a tight connection between the two shafts and the dryer body to avoid vibration and wear caused by misalignment. Preheat the entire system to gradually bring the dryer body to operating temperature, reducing the impact of thermal stress on the equipment. Heat is transferred to the dryer body 4 via an external heat source, such as steam. This heat source typically enters the drive-side shaft 1 or the operating-side shaft 6 through a pipe and is evenly distributed throughout the dryer body. Heat within the dryer body 4 is transferred to the surface of the material being dried by conduction, rapidly evaporating moisture. The spherical cap head 3 facilitates even heat distribution and improves heating efficiency. The drive-side shaft 1, driven by a motor and a reducer, rotates the dryer body slowly. A low speed setting ensures sufficient agitation and even heating of the material within the dryer body, improving drying efficiency. The operating shaft 6 is connected to the cylinder body via a bearing seat, ensuring stable coaxiality during rotation, reducing vibration and noise and improving operational smoothness. A manhole 5 allows easy access to the cylinder body for cleaning and maintenance, ensuring long-term stable operation of the equipment. High-strength screws 7 are made of high-strength material, ensuring a secure connection during long-term operation and facilitating removal and replacement.

[0054] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A large diameter, high linear pressure, low speed steel drying cylinder, characterized by: include: Drive side shaft (1); A shaft sleeve (2) connected to the transmission side shaft (1); A spherical cap head (3) is welded and fixed to the shaft sleeve (2); The cylinder (4) is welded with the spherical cap head (3) to form a cylinder body; A manhole device (5) is installed on the cylinder (4); An operating side shaft (6) is connected to the other end of the cylinder (4), and the operating side shaft (6) is coaxial with the cylinder; High-strength screws (7) are used to cold-fit the transmission side shaft (1) and the operating side shaft (6) onto the cylinder body and fasten them into a whole; The head reinforcement rib (8) is welded to the spherical cap head (3).

2. The large-diameter, high-line-pressure, low-speed steel drying cylinder according to claim 1, characterized in that: After welding, the cylinder body is subjected to an electric furnace annealing treatment to eliminate internal stress.

3. The large-diameter, high-line-pressure, low-speed steel drying cylinder according to claim 1, characterized in that: The high-strength screw (7) is made of high-strength material.

4. The large-diameter, high-line-pressure, low-speed steel drying cylinder according to claim 1, characterized in that: A sealing ring is provided on the manhole device (5).

5. The large-diameter, high-line-pressure, low-speed steel drying cylinder according to claim 1, characterized in that: The transmission side shaft (1) and the operating side shaft (6) are respectively connected to the cylinder body via bearing seats.

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