An online maintenance structure of a non-stop separator transmission device

Abstract

The utility model discloses a kind of on-line maintenance structure of non-stop type separator transmission device, it is related to material grinding and pulverizing technical field, the structure includes mill separator body and internal rotor, modular maintenance structure is set in top cover through-hole;The structure is injected gas to form positive pressure by the design of unique annular sealing air cavity, cooperate sealed air supply system, effectively block equipment internal medium leakage.When maintenance, in the state of keeping mill normal operation, drive and transmission components can be disassembled in turn, and transmission shaft is lowered, so that annular convex edge on it cooperates with sealing ring in sealing sleeve, temporary sealing is formed, so that bearing and other fault components are safely and quickly replaced.The utility model realizes on-line maintenance under the working condition of load, pressure and temperature, completely avoids the production interruption caused by traditional mode must be stopped, shortens maintenance time from dozens of hours to within 2 hours, significantly improves equipment operation efficiency and economic benefit.

Description

Technical Field

[0001] This utility model relates to the field of material grinding and powder making technology, and more specifically to an online maintenance structure for a non-stop separator transmission device. It is particularly suitable for online maintenance of separator transmission components that need to operate under high dust, high temperature, and high speed conditions in closed-circuit grinding systems in industries such as cement, power, metallurgy, and coal chemical industry. It can realize the replacement of vulnerable parts such as bearings and seals under load, pressure, and temperature. Background Technology

[0002] As the core classifying equipment in a closed-circuit grinding system, the mill separator operates continuously under harsh conditions of high dust, high temperature, and high speed. Under these conditions, critical components such as bearings and seals experience a significantly increased failure rate due to the combined effects of continuous dust intrusion, high-temperature aging, and high-speed wear, becoming a major bottleneck affecting the stable operation of the system.

[0003] In traditional transmission systems, if abnormal bearing temperature rise or lubricant leakage occurs, the entire production line must be shut down. Large inspection channels must be opened, the rotor assembly disassembled, and the entire transmission system lifted out to replace the damaged parts. This maintenance process is complex, requires limited workspace, and a single repair can take at least 12 to 24 hours, resulting in direct production losses of millions of yuan. Furthermore, frequent system start-ups and shutdowns cause severe mechanical and thermal stress on auxiliary equipment such as boilers and fans, further impacting equipment lifespan and operational safety.

[0004] Although some manufacturers have added maintenance manholes to the upper structure of separators in recent years in an attempt to simplify maintenance procedures, they still cannot eliminate the operational prerequisites of system shutdown and depressurization, and have failed to fundamentally solve the common industry problem of "the bearing can only be replaced after the mill is stopped." In industries with extremely high continuous production requirements, such as cement, power, metallurgy, and coal chemical industries, how to achieve online maintenance of transmission components under "load, pressure, and temperature" conditions has become a key issue in improving equipment availability and production efficiency.

[0005] Therefore, developing a transmission device maintenance structure that truly enables "online replacement during mill operation," thereby completely eliminating reliance on downtime, shortening maintenance time, and reducing operation and maintenance costs, has become an urgent technical bottleneck that needs to be overcome in this field. Utility Model Content

[0006] In view of this, this utility model provides an online maintenance structure for a separator transmission device that can be maintained without stopping the machine. It proposes a transmission device structure that can be maintained under "load, pressure and temperature" conditions. The goal is to complete the overall replacement of bearings and seals within 2 hours when the mill is running at full load, achieving zero production downtime, zero pressure loss and zero pollution.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A non-stop online maintenance structure for a separator drive includes a mill separator body and a rotor disposed inside the mill separator body. The top cover of the mill separator body has a through hole in the middle, and a maintenance structure body is installed in the through hole. The maintenance structure body includes: An annular base is fixed at the through hole, and a sealing sleeve is fixed to the annular bottom surface of the annular base. The inner wall of the sealing sleeve has a sealing ring that protrudes radially inward. A bearing housing, which is coaxially fixed to the annular top surface of the annular base; A drive shaft passes through the bearing housing, the annular base, and the sealing sleeve. The top of the drive shaft is connected to the bottom of the bearing housing via an upper sealing transmission assembly, and the middle of the drive shaft is connected to the bottom of the bearing housing and the annular base via a lower sealing transmission assembly. The bottom of the drive shaft is fixedly connected to the rotor. An annular sealing air cavity is formed between the outer wall of the drive shaft and the sealing sleeve. The outer wall of the drive shaft has a radially protruding annular flange located above the sealing ring and used to seal with the sealing ring when the drive shaft is lowered. A sealed air supply system is used to supply air and provide air pressure to the annular sealed air cavity; The geared motor is fixed to the top of the bearing housing by a support base, and the power output shaft of the geared motor is coupled to the top of the transmission shaft by a coupling.

[0008] Through the above technical solution, this utility model, by setting up a modular maintenance structure including a sealing sleeve, an annular sealing air cavity and a sealing air supply system, can quickly form an effective seal and realize the lowering of the drive shaft and online replacement of key components while the mill is in normal operation (under load, pressure and temperature). This completely avoids the huge production losses caused by the need to stop the machine for traditional maintenance, significantly shortens the maintenance time and improves the operating efficiency and reliability of the equipment.

[0009] Preferably, in the above-mentioned online maintenance structure for a non-stop separator transmission device, at least two sets of sealing rings are arranged at vertical intervals on the inner wall of the sealing sleeve, and the number of annular protrusions on the transmission shaft is the same as the number of sealing rings, and they are arranged one-to-one above the sealing rings.

[0010] Preferably, in the above-mentioned non-stop separator transmission device online maintenance structure, the sealing sleeve is composed of multiple cylindrical sections connected by a flange structure.

[0011] Preferably, in the above-mentioned online maintenance structure for a non-stop separator transmission device, the sealed air supply system includes a sealed main pipeline connected to an air source, a sealed branch pipeline connected to the sealed main pipeline, the sealed branch pipeline communicating with the annular sealed air cavity, and a control valve installed on the sealed branch pipeline.

[0012] Preferably, in the above-mentioned non-stop separator transmission device online maintenance structure, the sealing branch pipe passes through the annular base and is connected to the sealing sleeve.

[0013] Preferably, in the above-mentioned non-stop separator transmission device online maintenance structure, a heat insulation protective cover is fixed on the annular bottom surface of the annular base, and the heat insulation protective cover is installed on the outside of the sealing sleeve and the sealing branch pipe.

[0014] Preferably, in the above-mentioned online maintenance structure for a non-stop separator transmission device, the upper sealing transmission assembly includes an upper bearing installed at the top of the bearing housing, the upper bearing being connected between the bearing housing and the transmission shaft, and an upper sealing ring being fixed at the bottom end of the bearing housing. The upper sealing ring is sleeved on the outside of the transmission shaft and is used to position the upper bearing.

[0015] Preferably, in the above-mentioned online maintenance structure for a non-stop separator transmission device, the lower sealing transmission assembly includes a lower bearing installed at the bottom end of the bearing housing, the lower bearing being connected between the bearing housing and the transmission shaft, and a lower sealing ring fitted on the outer side of the transmission shaft is installed on the inner ring of the annular base. The lower sealing ring is located below the lower bearing and abuts against the outer ring of the lower bearing.

[0016] Preferably, in the above-mentioned non-stop separator transmission device online maintenance structure, the side wall of the transmission shaft has a stepped surface located above the lower bearing, and a locking disc is pressed between the stepped surface and the inner ring of the lower bearing, and the locking disc is engaged and locked on the outside of the transmission shaft.

[0017] The main technical solution adopted by this utility model is as follows: 1. This utility model designs the transmission device as a modular unit of "integrated reducer and motor - transmission device body", which can be detachably connected to the separator body via a flange; 2. A short shaft system of "double bearings - double seals - locking disc" is set inside the unit, and all components can be pulled out one by one from top to bottom; 3. An "annular sealed air chamber" is added to the bottom of the unit to form a micro-positive pressure air curtain and a pressure-maintaining sealed air chamber using the mill's own circulating air (or external nitrogen) to prevent the backflow of dust-laden hot air. 4. The air chamber is equipped with two sealing rings, one above the other, and upper and lower sealing branch pipes are led out respectively. Each branch pipe is equipped with a needle valve, which can adjust the air pressure and air volume online. 5. A two-part heat insulation protective cover is installed on the outside of the air cavity. It is made of 5mm wear-resistant plate and aluminum silicate fiber blanket. This reduces the heat transfer to the bearing seat and avoids the scouring and wear of the air cavity by the high-speed airflow (flow velocity ≤20m / s) inside the separator. 6. The weight of the entire module is kept below 500 kg, and it can be lifted and lowered with a regular hand hoist, without the need for a large crane.

[0018] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a non-stop online maintenance structure for a separator transmission device, which has the following beneficial effects: 1. Truly no downtime: During maintenance, the mill system continues to feed and discharge powder as usual. The mill maintains its rated load during the maintenance process, and there are no changes in the feed rate, powder fineness (deviation ≤2%), and system pressure (fluctuation ≤50Pa), completely eliminating the production capacity loss of traditional downtime maintenance. 2. Zero leakage: The sealed annular air cavity forms a positive pressure of ≥5000Pa, and the leakage concentration detected by the on-site dust meter is <1 mg / m³, which is better than the national environmental protection emission standards; 3. Quick replacement: The bearings and seals are lifted out as a whole at once. The modular design allows for "top-down disassembly and assembly". Two people can work together to complete the replacement of the bearings and seals. The total time is ≤2 hours, which is more than 85% shorter than the traditional method. 4. Safety and explosion protection: Nitrogen gas can be introduced into the air chamber to control the oxygen content by volume fraction to <8%, which meets the explosion protection requirements of the coal mill system; 5. High versatility: For existing mill rotary separators, only the transmission device interface flange needs to be replaced (to match the original equipment installation dimensions), without modifying core components such as rotor, shell, and motor. The modification cycle for a single unit is ≤96 hours. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 The attached figure is a schematic diagram of the online maintenance structure of the non-stop separator transmission device provided by this utility model; Figure 2 The attached figure is a schematic diagram of the maintenance structure body provided by this utility model; Figure 3 The attached figure is a schematic diagram of the sealed air supply system provided by this utility model; Figure 4 The attached diagram is a schematic diagram of the disassembly of the geared motor integrated machine using the online maintenance method provided by this utility model; Figure 5 The attached figure is a schematic diagram of disassembling the upper sealing transmission assembly and the lower sealing transmission assembly using the online maintenance method provided by this utility model; Figure 6 The attached figure is a schematic diagram of the online maintenance method provided by this utility model, which lowers the drive shaft so that the annular convex edge seals with the sealing ring.

[0021] in: 10-Mill separator body; 101-Top cover; 20-rotor; 30-Main body of the maintenance structure; 301-Annular base; 302-Sealing sleeve; 3021-Sealing ring; 303-Bearing housing; 304-Drive shaft; 3041-Annular flange; 3042-Stepped surface; 305-Upper sealing transmission assembly; 3051-Upper bearing; 3052-Upper sealing ring; 306-Lower sealing transmission assembly; 3061-Lower bearing; 3062-Lower sealing ring; 3063-Locking disc; 307-Annular sealing air cavity; 308-Sealed air supply system; 3081-Sealed main pipeline; 3082-Sealed branch pipeline; 3083-Control valve; 309-Integrated geared motor; 310-Support base; 311-Coupling; 312-Heat insulation protective cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] See appendix Figure 1 To be continued Figure 3 This utility model discloses an online maintenance structure for a non-stop separator transmission device, including a mill separator body 10 and a rotor 20 disposed inside the mill separator body 10. The top cover 101 of the mill separator body 10 has a through hole in the middle, and a maintenance structure body 30 is installed in the through hole. The maintenance structure body 30 includes: An annular base 301 is fixed at the through hole. A sealing sleeve 302 is fixed on the annular bottom surface of the annular base 301. The inner wall of the sealing sleeve 302 has a sealing ring 3021 that protrudes radially inward. Bearing housing 303 is coaxially fixed to the annular top surface of annular base 301; A drive shaft 304 passes through a bearing housing 303, an annular base 301, and a sealing sleeve 302. The top of the drive shaft 304 is connected to the bottom of the bearing housing 303 via an upper sealing drive assembly 305, and the middle part of the drive shaft 304 is connected to the bottom of the bearing housing 303 and the annular base 301 via a lower sealing drive assembly 306. The bottom of the drive shaft 304 is fixedly connected to the rotor 20. An annular sealing air cavity 307 is formed between the outer wall of the drive shaft 304 and the sealing sleeve 302. The outer wall of the drive shaft 304 has a radially protruding annular flange 3041, which is located above the sealing ring 3021 and is used to seal with the sealing ring 3021 when the drive shaft 304 is lowered. The sealed air supply system 308 is used to supply air pressure into the annular sealed air cavity 307. The geared motor integrated unit 309 is fixed to the top of the bearing housing 303 by the support base 310. The power output shaft of the geared motor integrated unit 309 is coupled to the top of the transmission shaft 304 by the coupling 311.

[0024] To further optimize the above technical solution, at least two sets of sealing rings 3021 are provided at intervals on the inner wall of the sealing sleeve 302. The number of annular protrusions 3041 on the drive shaft 304 is the same as the number of sealing rings 3021, and they are arranged one-to-one above the sealing rings 3021.

[0025] To further optimize the above technical solution, the sealing sleeve 302 is composed of multiple cylindrical sections connected by a flange structure.

[0026] In this embodiment, two sets of sealing rings 3021 are arranged at intervals on the inner wall of the sealing sleeve 302, and two sets of annular protrusions 3041 are also arranged on the drive shaft 304. The annular sealing air chamber 307 forms an annular sealed pressure-maintaining air chamber through two interconnected chambers to effectively block the leakage of the internal medium of the mill separator body 10 to the outside.

[0027] To further optimize the above technical solution, the sealed air supply system 308 includes a sealed main pipeline 3081 connected to the air source, a sealed branch pipeline 3082 connected to the sealed main pipeline 3081, the sealed branch pipeline 3082 being connected to the annular sealed air cavity 307, and a control valve 3083 installed on the sealed branch pipeline 3082 to regulate the flow rate of the medium.

[0028] To further optimize the above technical solution, the sealed branch pipe 3082 passes through the annular base 301 and is connected to the sealing sleeve 302.

[0029] To further optimize the above technical solution, a heat insulation protective cover 312 is fixed on the annular bottom surface of the annular base 301. The heat insulation protective cover 312 is installed on the outside of the sealing sleeve 302 and the sealing branch pipe 3082, and has both structural protection and heat insulation functions.

[0030] In this embodiment, there are two sealing branch pipes 3082, which are connected to the two chambers respectively. During normal operation, the medium can also be introduced into the two chambers to improve the sealing effect during normal operation.

[0031] To further optimize the above technical solution, the upper sealing transmission assembly 305 includes an upper bearing 3051 installed at the top of the bearing housing 303. The upper bearing 3051 is connected between the bearing housing 303 and the transmission shaft 304. An upper sealing ring 3052 is fixed at the bottom end of the bearing housing 303. The upper sealing ring 3052 is sleeved on the outside of the transmission shaft 304 and is used to position the upper bearing 3051.

[0032] To further optimize the above technical solution, the lower sealing transmission assembly 306 includes a lower bearing 3061 installed at the bottom of the bearing housing 303. The lower bearing 3061 is connected between the bearing housing 303 and the transmission shaft 304. The inner ring of the annular base 301 is fitted with a lower sealing ring 3062 that is sleeved on the outside of the transmission shaft 304. The lower sealing ring 3062 is located below the lower bearing 3061 and abuts against the outer ring of the lower bearing 3061.

[0033] To further optimize the above technical solution, the side wall of the drive shaft 304 has a stepped surface 3042 located above the lower bearing 3061. A locking disc 3063 is pressed between the stepped surface 3042 and the inner ring of the lower bearing 3061, and the locking disc 3063 is engaged and locked on the outside of the drive shaft 304.

[0034] The method for online maintenance of the non-stop separator drive device provided in this embodiment includes the following steps: When the transmission device malfunctions and needs to be repaired, the mill is kept in normal operation. The medium is introduced into the annular sealed air chamber 307 through the sealed air supply system 308, so that the wind pressure in the annular sealed air chamber 307 blocks the leakage of the medium inside the mill separator body 10. First, disassemble the geared motor integrated unit 309, such as... Figure 4 As shown; Then, disassemble the upper sealing transmission assembly 305 and the lower sealing transmission assembly 306 in sequence, as follows: Figure 5 As shown, the drive shaft 304 is lowered so that the annular flange 3041 and the sealing ring 3021 are sealed together, as shown. Figure 6 As shown, replace the faulty component; Finally, reinstall in the reverse order.

[0035] The online maintenance structure for the non-stop separator drive device provided in this embodiment has the following material and specification selection for each component: The geared motor integrated unit 309 is an integrated model adapted to the mill separator; the bearing housing 303, support base 310, and annular base 301 are all made of high-strength steel; the upper bearing 3051 and lower bearing 3061 are high-temperature resistant and wear-resistant bearings; the upper sealing ring 3052 and lower sealing ring 3062 are made of fluororubber, suitable for high-temperature conditions; the sealing sleeve 302 is made of 304 stainless steel to ensure corrosion resistance and structural stability; the heat insulation protective cover 312 is composed of a 5mm thick wear-resistant steel plate and a 10mm thick aluminum silicate fiber blanket, taking into account both protection and heat insulation effects; the sealed branch pipe 3082 is made of stainless steel pipe, and the control valve 3083 is a needle valve for easy and precise adjustment of the medium flow. Specifically, first, the lower sealing ring 3062 is installed inside the annular base 301. Then, the drive shaft 304 is inserted into the lower sealing ring 3062, followed by the installation of the lower bearing 3061. The drive shaft 304 is axially positioned using the locking disc 3063. The bearing housing 303 is fixed to the annular base 301 via a connecting flange. The upper bearing 3051 and upper sealing ring 3052 are installed sequentially. The support base 310 is fixed to the top of the bearing housing 303. The geared motor integrated unit 309 is installed and connected to the drive shaft 304 via a coupling 311. A sealing sleeve 302 is positioned and installed at the bottom of the annular base 301, ensuring that its double sealing ring structure is precisely aligned with the interfaces of the upper and lower sealing branch pipes 3082. Control valves 3083 are installed on the two sealing branch pipes 3082 respectively. Finally, the heat insulation protective cover 312 is wrapped around the sealing sleeve 302, completing the overall assembly of the maintenance structure.

[0036] When the transmission device malfunctions and needs maintenance, keep the mill in normal operation and introduce the medium (mill circulating air or nitrogen) into the annular sealing air chamber 307 through the sealed branch pipe 3082. Adjust the control valve 3083 to form a sealing air pressure in the annular sealing air chamber 307 to block the leakage of the medium inside the mill separator body 10. If it is an explosion-proof working condition such as a coal mill, introduce nitrogen and control the oxygen content volume fraction to be <8%.

[0037] Disassemble the connecting flange between the geared motor integrated unit 309 and the transmission device body, and use a hand hoist to lift the entire geared motor integrated unit 309 away. Disassemble the upper sealing ring 3052, upper bearing 3051, bearing housing 303, locking disc 3063, lower bearing 3061, and lower sealing ring 3062 in sequence, removing the faulty component one by one from top to bottom. Replace with new parts, and assemble the lower sealing ring 3062, lower bearing 3061, locking disc 3063, bearing housing 303, upper bearing 3051, and upper sealing ring 3052 in reverse order, ensuring accurate positioning and reliable sealing of each component. Lift the geared motor integrated unit 309 and support base 310 back to their original positions, retighten the connecting flange, and restore power transmission.

[0038] Adjusting control valve 3083 allows sealing air to be simultaneously introduced into both the upper and lower chambers, completing the maintenance work within one hour. The maintenance structure of this embodiment can be directly adapted to existing rotary separators of various mills. Only the transmission device interface flange needs to be replaced to complete the modification. The modification cycle is less than 96 hours, and there is no need to modify core components such as the rotor and housing, significantly reducing the enterprise's modification costs. The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-stop online maintenance structure for a separator drive device, comprising a mill separator body (10) and a rotor (20) disposed inside the mill separator body (10), wherein the top cover (101) of the mill separator body (10) has a through hole in the middle, and a maintenance structure body (30) is installed in the through hole, characterized in that, The maintenance structure body (30) includes: An annular base (301) is fixed at the through hole. A sealing sleeve (302) is fixed on the annular bottom surface of the annular base (301). The inner wall of the sealing sleeve (302) has a sealing ring (3021) that protrudes radially inward. Bearing housing (303), the bearing housing (303) is coaxially fixed to the annular top surface of the annular base (301); A drive shaft (304) passes through the bearing housing (303), the annular base (301), and the sealing sleeve (302). The top of the drive shaft (304) is connected to the bottom of the bearing housing (303) via an upper sealing drive assembly (305). The middle part of the drive shaft (304) is connected to the bottom of the bearing housing (303) and the annular base (301) via a lower sealing drive assembly (306). The bottom of the drive shaft (304) is fixedly connected to the rotor (20). An annular sealing air cavity (307) is formed between the outer wall of the drive shaft (304) and the sealing sleeve (302). The outer wall of the drive shaft (304) has a radially protruding annular flange (3041). The annular flange (3041) is located above the sealing ring (3021) and is used to seal with the sealing ring (3021) when the drive shaft (304) is lowered. A sealed air supply system (308) is used to supply air to the annular sealed air cavity (307) and provide air pressure; The geared motor integrated machine (309) is fixed to the top of the bearing seat (303) by a support base (310), and the power output shaft of the geared motor integrated machine (309) is coupled to the top of the transmission shaft (304) by a coupling (311).

2. The online maintenance structure for a non-stop separator transmission device according to claim 1, characterized in that, The sealing rings (3021) are arranged in at least two sets at intervals on the inner wall of the sealing sleeve (302). The number of the annular protrusions (3041) on the drive shaft (304) is the same as the number of the sealing rings (3021), and they are arranged one-to-one above the sealing rings (3021).

3. The online maintenance structure for a non-stop separator transmission device according to claim 2, characterized in that, The sealing sleeve (302) is composed of multiple cylindrical sections joined together by a flange structure.

4. The online maintenance structure for a non-stop separator transmission device according to claim 3, characterized in that, The sealed air supply system (308) includes a sealed main pipeline (3081) connected to an air source, a sealed branch pipeline (3082) connected to the sealed main pipeline (3081), the sealed branch pipeline (3082) being connected to the annular sealed air cavity (307), and a control valve (3083) installed on the sealed branch pipeline (3082).

5. The online maintenance structure for a non-stop separator transmission device according to claim 4, characterized in that, The sealed branch pipe (3082) passes through the annular base (301) and is connected to the sealed sleeve (302).

6. The online maintenance structure for a non-stop separator transmission device according to claim 5, characterized in that, A heat insulation protective cover (312) is fixed on the annular bottom surface of the annular base (301), and the heat insulation protective cover (312) covers the outside of the sealing sleeve (302) and the sealing branch pipe (3082).

7. The online maintenance structure for a non-stop separator transmission device according to claim 1, characterized in that, The upper sealing transmission assembly (305) includes an upper bearing (3051) mounted on the top of the bearing housing (303). The upper bearing (3051) is connected between the bearing housing (303) and the transmission shaft (304). An upper sealing ring (3052) is fixed at the bottom end of the bearing housing (303). The upper sealing ring (3052) is sleeved on the outside of the transmission shaft (304) and is used to position the upper bearing (3051).

8. The online maintenance structure for a non-stop separator transmission device according to claim 1, characterized in that, The lower sealing transmission assembly (306) includes a lower bearing (3061) installed at the bottom of the bearing housing (303). The lower bearing (3061) is connected between the bearing housing (303) and the transmission shaft (304). The inner ring of the annular base (301) is fitted with a lower sealing ring (3062) sleeved on the outside of the transmission shaft (304). The lower sealing ring (3062) is located below the lower bearing (3061) and abuts against the outer ring of the lower bearing (3061).

9. The online maintenance structure for a non-stop separator transmission device according to claim 8, characterized in that, The sidewall of the drive shaft (304) has a stepped surface (3042) located above the lower bearing (3061), and a locking disc (3063) is pressed between the stepped surface (3042) and the inner ring of the lower bearing (3061), and the locking disc (3063) is engaged and snapped onto the outside of the drive shaft (304).

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