Polyester reaction kettle shaft seal lubrication seal replacement system

Abstract

The utility model relates to the technical field of lubrication mechanical equipment, in particular to a polyester reaction kettle shaft seal lubrication seal replacement system which is applied to a reaction kettle shaft seal lubrication system and comprises an external waste oil barrel, an oil storage barrel is arranged on one side of the external waste oil barrel, and a cover plate is installed on the oil storage barrel. The lubricating and sealing replacement system for the shaft seal of the polyester device reaction kettle further comprises a lubricating replacement mechanism, a lubricating and sealing mechanism and an impurity removal mechanism. Lubricating oil is provided for the lubricating replacement mechanism in a sealed mode through the lubricating sealing mechanism, it can be guaranteed that the lubricating oil is not polluted by the outside in the system, the cleanliness and effectiveness of the lubricating oil are maintained, and the lubricating replacement mechanism can continuously replace the lubricating oil when large key equipment continuously operates; the technical problems that on-site lubricating oil pollution is caused by manual replacement oiling, large-scale key equipment operates uninterruptedly, and brand new lubricating oil is difficult to completely replace the position needing to be sealed are solved.

Description

Technical Field

[0001] This utility model relates to the field of lubrication machinery and equipment technology, specifically to a polyester reactor shaft seal lubrication and sealing replacement system. Background Technology

[0002] The shaft seal of the polyester unit reactor is used to prevent leakage of reactants or gases. The lubricating fluid provided by the lubrication system can effectively reduce the friction between the sealing surfaces, ensure the stability of the sealing effect, thereby avoiding chemical leakage and ensuring the sealing performance of the reactor. The reactor shaft seal lubrication system is designed to ensure the sealing effect and safe and stable operation of the equipment when the reactor is operating under harsh conditions such as high temperature and high pressure, reduce wear and extend the service life of the equipment.

[0003] In existing technologies, manual replacement and lubrication of shaft seals in polyester reactors is generally insufficient to achieve a complete seal, leading to on-site lubricant contamination. Furthermore, large and critical equipment often requires continuous operation to ensure production efficiency and stability, making it difficult to completely replace the lubricating oil in the required sealing parts. This can easily result in poor lubrication, increased friction and wear, and ultimately equipment failure, which may even require shutdown for large-scale maintenance. Therefore, we propose a lubrication and sealing replacement system for the shaft seals of polyester reactors. Utility Model Content

[0004] To address the aforementioned issues, a polyurethane reactor shaft seal lubrication and replacement system is provided. This system provides lubricating oil to the lubrication replacement mechanism in a sealed manner through a lubrication sealing mechanism, maintaining the cleanliness and effectiveness of the lubricating oil. Furthermore, the lubrication replacement mechanism can continuously replace the lubricating oil during the uninterrupted operation of large, critical equipment. This solves the technical problem of on-site lubricating oil contamination caused by manual replacement and refilling, and the difficulty in thoroughly replacing the required sealing parts with brand new lubricating oil during the uninterrupted operation of large, critical equipment.

[0005] To address the problems of existing technologies, this utility model provides a polyester reactor shaft seal lubrication and replacement system, applied to the reactor shaft seal lubrication system. It includes an external waste oil tank, with an oil storage tank on one side of the external waste oil tank and a cover plate installed on the oil storage tank. The polyester reactor shaft seal lubrication and replacement system also includes a lubrication replacement mechanism, a lubrication sealing mechanism, and a cleanup mechanism. The external waste oil tank and the oil storage tank are equipped with a lubrication replacement mechanism for replacing the lubricating oil in the reactor shaft seal lubrication system. The oil storage tank is equipped with a lubrication sealing mechanism to maintain a sealed state when the lubrication replacement mechanism delivers lubricating oil to the oil storage tank. The lubrication sealing mechanism is equipped with a cleanup mechanism to prevent the lubrication sealing mechanism from delivering lubricating oil carrying impurities to the oil storage tank.

[0006] Preferably, the lubrication replacement mechanism includes a first delivery pump, an oil delivery pipe, and a waste oil pipe; the first delivery pump is connected to an oil storage tank; one end of the oil delivery pipe is connected to the first delivery pump, and the other end of the oil delivery pipe is connected to the oil inlet of the reactor shaft seal lubrication system; one end of the waste oil pipe is connected to an external waste oil tank, and the other end of the waste oil pipe is connected to the oil outlet of the reactor shaft seal lubrication system.

[0007] Preferably, the lubrication and sealing mechanism includes an external oil tank, an oil filter tank, a second delivery pump, connecting pipes, and a control panel; the external oil tank is located on one side of the external waste oil tank; the oil filter tank is located on one side of the external oil tank; the input end of the second delivery pump is connected to the external oil tank, and the output end of the second delivery pump is connected to the oil filter tank; one end of the connecting pipe is connected to the oil storage tank, and the other end of the connecting pipe is connected to the oil filter tank; the control panel is located between the external oil tank and the oil filter tank.

[0008] Preferably, the impurity removal mechanism includes a first filter element and a second filter element; the first filter element is disposed inside the oil filter tank and is connected to the cover plate of the oil filter tank; the second filter element is sleeved on the outside of the first filter element and is connected to the cover plate of the oil filter tank.

[0009] Preferably, the impurity removal mechanism further includes an anti-clogging mechanism, a positioning mechanism, and a transmission mechanism; the anti-clogging mechanism is disposed on the first filter element and the second filter element, and the anti-clogging mechanism is used to prevent impurities in the lubricating oil from clogging the first filter element and the second filter element; the positioning mechanism is disposed on the anti-clogging mechanism, and the positioning mechanism is used to cooperate with the components of the anti-clogging mechanism to operate synchronously; the transmission mechanism is disposed on the positioning mechanism, and the transmission mechanism is used to drive the anti-clogging mechanism to move through the positioning mechanism.

[0010] Preferably, the anti-clogging mechanism includes a first connecting block, a second connecting block, and two anti-clogging components; the first connecting block is rotatably mounted on the first filter element; the second connecting block is rotatably mounted on the second filter element; and the two anti-clogging components are respectively connected to the first connecting block and the second connecting block.

[0011] Preferably, the positioning mechanism includes a first insert block, a first slot, a second slot, a bracket, and a second insert block; the first insert block is connected to the second connecting block; the first slot is opened on the side of the first connecting block near the first insert block, and the first slot is inserted into the first insert block; the second slot is opened on the lower side of the first connecting block; the bracket is connected to the inner side of the oil filter tank; the second insert block is rotatably mounted on the bracket, and the second insert block is inserted into the second slot.

[0012] Preferably, the transmission mechanism includes a bevel gear assembly and a power component; the bevel gear assembly is rotatably mounted inside the bracket, and the working end of the bevel gear assembly is connected to the second insert block; the power component is mounted outside the oil filter tank, and the working end of the power component is connected to the working end of the bevel gear assembly away from the second insert block via a central rod.

[0013] The advantages of this utility model compared to the prior art are:

[0014] 1. By providing lubricating oil to the lubrication replacement mechanism in a sealed manner through the lubrication sealing mechanism, it is possible to ensure that the lubricating oil inside the system is not contaminated by the outside world, maintain the cleanliness and effectiveness of the lubricating oil, and the lubrication replacement mechanism can continuously replace the lubricating oil when large and critical equipment is running continuously. This solves the technical problem of on-site lubricating oil contamination caused by manual replacement and refilling, and the difficulty in completely replacing the required sealing parts with brand new lubricating oil when large and critical equipment is running continuously.

[0015] 2. By continuously rotating and cleaning the impurities accumulated on the first and second filter elements through the impurity removal mechanism, the filter holes are prevented from being blocked by impurities, and the time that impurities stay on the filter screen surface is reduced, thereby improving the filtration efficiency. This solves the technical problem of new lubricating oil clogging the first and second filter elements, thus reducing the filtration efficiency of the oil filter tank. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an external waste oil tank and oil storage tank and their connection structure for a polyester reactor shaft seal lubrication and replacement system.

[0017] Figure 2 This is a three-dimensional schematic diagram of the oil filter tank, power components, and their connection structure of a polyester reactor shaft seal lubrication and replacement system.

[0018] Figure 3 This is a three-dimensional schematic diagram of the first and second filter elements and their connection structure in a polyester reactor shaft seal lubrication and sealing replacement system.

[0019] Figure 4 This is a three-dimensional schematic diagram of an anti-clogging component and a first insert block and their connection structure in a polyester reactor shaft seal lubrication and sealing replacement system.

[0020] Figure 5 A polyester reactor shaft seal lubrication and replacement system Figure 1 Enlarged diagram of point A in the middle.

[0021] Figure 6 A polyester reactor shaft seal lubrication and replacement system Figure 2 Enlarged diagram of point B in the middle.

[0022] The components in the diagram are labeled as follows: 1. External waste oil tank; 11. Oil storage tank; 2. First transfer pump; 21. Oil transfer fitting; 22. Waste oil fitting; 23. External oil tank; 24. Oil filter tank; 25. Second transfer pump; 26. Connecting fitting; 27. Control panel; 28. First filter element; 29. ​​Second filter element; 210. First connecting block; 211. Second connecting block; 212. Anti-clogging component; 213. First insert; 214. First slot; 215. Second slot; 216. Bracket; 217. Second insert; 218. Bevel gear assembly; 219. Power component. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] See Figure 1 and Figure 5 As shown, a polyester reactor shaft seal lubrication and replacement system is applied to the reactor shaft seal lubrication system. It includes an external waste oil tank 1, with an oil storage tank 11 on one side of the external waste oil tank 1. The oil storage tank 11 is fitted with a cover. The polyester reactor shaft seal lubrication and replacement system also includes a lubrication replacement mechanism, a lubrication sealing mechanism, and a cleanup mechanism. The external waste oil tank 1 and the oil storage tank 11 are equipped with a lubrication replacement mechanism for replacing the lubricating oil in the reactor shaft seal lubrication system. The oil storage tank 11 is equipped with a lubrication sealing mechanism to maintain a sealed state when the lubrication replacement mechanism delivers lubricating oil to the oil storage tank 11. The lubrication sealing mechanism is equipped with a cleanup mechanism to prevent the lubrication sealing mechanism from delivering lubricating oil carrying impurities to the oil storage tank 11.

[0025] Specifically, an oil drain valve is installed at the bottom of the external waste oil tank 1 to control the discharge of waste oil. An observation window is embedded on the upper side of the oil storage tank 11 to observe the state of the lubricating oil inside the oil storage tank 11.

[0026] During the operation of the reactor shaft seal lubrication and replacement system in the polyester unit, the lubrication and sealing mechanism uses a closed-loop conveying method to deliver new lubricating oil to the oil storage tank 11. This process minimizes on-site lubricating oil contamination. Simultaneously, the lubrication and sealing mechanism utilizes a purification system to filter the new lubricating oil, effectively preventing impurities from entering the oil storage tank 11. Once the new lubricating oil is delivered to the oil storage tank 11, the tank, through the lubrication replacement mechanism, delivers it to the oil inlet of the reactor shaft seal lubrication system, replenishing the system with new lubricating oil. At the same time, waste oil generated by the reactor shaft seal lubrication system can also be transported to the external waste oil tank 1 via the lubrication replacement mechanism.

[0027] The closed-loop conveying mechanism of the lubrication sealing system and the filtration of the impurity removal mechanism effectively remove impurities from the lubricating oil, preventing them from entering the reactor shaft seal lubrication system and ensuring the normal operation of the system. Furthermore, the lubrication replacement mechanism enables timely discharge of waste oil and continuous supply of new lubricating oil without shutting down the equipment, avoiding equipment interruptions caused by oil changes and ensuring continuous and stable operation of the equipment.

[0028] See Figure 1 and Figure 5 As shown, the lubrication replacement mechanism includes a first delivery pump 2, an oil delivery pipe 21, and a waste oil pipe 22; the first delivery pump 2 is connected to the oil storage tank 11; one end of the oil delivery pipe 21 is connected to the first delivery pump 2, and the other end of the oil delivery pipe 21 is connected to the oil inlet of the reactor shaft seal lubrication system; one end of the waste oil pipe 22 is connected to the external waste oil tank 1, and the other end of the waste oil pipe 22 is connected to the oil outlet of the reactor shaft seal lubrication system; the lubrication sealing mechanism includes an external oil tank 23 and an oil filter tank 24. The system includes a second delivery pump 25, a connecting pipe 26, and a control panel 27; an external oil tank 23 is located on one side of the external waste oil tank 1; an oil filter tank 24 is located on one side of the external oil tank 23; the input end of the second delivery pump 25 is connected to the external oil tank 23, and the output end of the second delivery pump 25 is connected to the oil filter tank 24; one end of the connecting pipe 26 is connected to the oil storage tank 11, and the other end of the connecting pipe 26 is connected to the oil filter tank 24; and the control panel 27 is located between the external oil tank 23 and the oil filter tank 24.

[0029] Specifically, in the reactor shaft seal lubrication and replacement system of the polyester unit, valves are installed on the oil delivery pipe 21, waste oil pipe 22, and connecting pipe 26 respectively. These valves are used to control the fluid transport within the pipes. A level gauge is installed on the outside of the oil filter tank 24 to monitor the lubricating oil level inside. A breather valve is installed on the top of the oil filter tank 24 to balance the air pressure inside, ensuring that the air pressure inside the tank remains stable during the flow of lubricating oil in and out of the tank. This prevents air pressure issues from affecting the normal transport of lubricating oil and the structural safety of the oil filter tank 24.

[0030] When the reactor shaft seal lubrication and replacement system of the polyester unit is put into operation, the external oil tank 23 is first moved to the side of the filter tank 24, and the external oil tank 23 is connected to the second transfer pump 25. Subsequently, the operator can control the valves of the oil delivery pipe fitting 21, the waste oil pipe fitting 22, the connecting pipe fitting 26, the first transfer pump 2, and the second transfer pump 25 through the control panel 27. After starting the second transfer pump 25, it delivers the new lubricating oil from the external oil tank 23 to the filter tank 24. During this process, the operator can monitor the amount of lubricating oil in the filter tank 24 in real time using the level gauge. After the filter tank 24 receives the new lubricating oil, it is transferred to the storage tank 11 through the connecting pipe fitting 26.

[0031] Then, the first delivery pump 2 is started, and the oil delivery pipe 21 uses the first delivery pump 2 to deliver the lubricating oil in the oil storage tank 11 to the oil inlet of the reactor shaft seal lubrication system, replenishing the reactor shaft seal lubrication system with new lubricating oil. At the same time, the oil outlet of the reactor shaft seal lubrication system discharges the waste lubricating oil into the external waste oil tank 1 through the waste oil pipe 22. This enables the reactor shaft seal lubrication system to discharge waste oil in a timely manner without stopping the machine, and to continuously supply new lubricating oil, avoiding the need for shutdown and oil change operations, and ensuring the continuous and stable operation of the equipment.

[0032] In addition, the external waste oil tank 1 can be used to clean the waste lubricating oil through the drain valve installed at its bottom. The polyester unit reactor shaft seal lubrication and replacement system can complete the replacement and cleaning of lubricating oil without stopping the equipment, avoiding the impact on the production line operation, keeping the equipment in optimal working condition at all times, effectively reducing the time loss caused by downtime for oil changes, thereby improving overall production efficiency, and preventing lubricating oil from polluting the on-site environment.

[0033] See Figures 1-6As shown, the impurity removal mechanism includes a first filter element 28 and a second filter element 29. The first filter element 28 is disposed inside the oil filter tank 24 and is connected to the cover plate of the oil filter tank 24. The second filter element 29 is sleeved on the outside of the first filter element 28 and is connected to the cover plate of the oil filter tank 24. The impurity removal mechanism also includes an anti-clogging mechanism, a positioning mechanism, and a transmission mechanism. The anti-clogging mechanism is disposed on the first filter element 28 and the second filter element 29 and is used to prevent impurities in the lubricating oil from clogging the first filter element 28 and the second filter element 29. The positioning mechanism is disposed on the anti-clogging mechanism and is used to cooperate with the components of the anti-clogging mechanism for synchronous operation. The transmission mechanism is disposed on the positioning mechanism and is used to drive the anti-clogging mechanism to move through the positioning mechanism. The anti-clogging mechanism includes a first connecting block 210, a second connecting block 211, and two anti-clogging elements 212. The first connecting block 210 is rotatably disposed on the first filter element 28. The second connecting block 211 is rotatably disposed on the second filter element 29. The two anti-clogging elements 212 are... Component 212 is connected to the first connecting block 210 and the second connecting block 211 respectively; the positioning mechanism includes a first insert 213, a first slot 214, a second slot 215, a bracket 216, and a second insert 217; the first insert 213 is connected to the second connecting block 211; the first slot 214 is located on the side of the first connecting block 210 near the first insert 213, and the first slot 214 is inserted into the first insert 213; the second slot 215 is located on the lower side of the first connecting block 210; the bracket 216 is connected to the filter The inner side of the oil tank 24 is connected; the second insert 217 is rotatably mounted on the bracket 216 and is inserted into the second slot 215; the transmission mechanism includes a bevel gear assembly 218 and a power component 219; the bevel gear assembly 218 is rotatably mounted inside the bracket 216 and its working end is connected to the second insert 217; the power component 219 is located outside the oil filter tank 24 and its working end is connected to the working end of the bevel gear assembly 218 away from the second insert 217 via a central rod.

[0034] Specifically, the oil filter tank 24 is bolted to the cover plate, and the first filter element 28 and the second filter element 29 are also bolted to the cover plate. The first filter element 28 uses a 20μm metal filter screen as the filter element, and the second filter element 29 uses a 10μm stainless steel felt filter screen as the filter element. The two anti-clogging components 212 are respectively brushes adapted to the materials of the first filter element 28 and the second filter element 29. The first insert 213 matches the first slot 214, and the second slot 215 matches the second insert 217, and the cross-sectional shape of the first insert 213 and the second insert 217 is rectangular. The bevel gear assembly 218 consists of two meshing bevel gears, and the power component 219 uses a motor as the drive element.

[0035] During the installation of the oil filter tank 24, firstly, the cover plate of the oil filter tank 24 is removed, and the first filter element 28 is fixed to the cover plate with bolts. Then, the second filter element 29 is placed over the outside of the first filter element 28, so that the second filter element 29 drives the first insert 213 to align with the first slot 214. Since the first insert 213 matches the first slot 214 and has a rectangular cross-section, the displacement of the first insert 213 within the first slot 214 is effectively limited. Next, the second filter element 29 is secured to the cover plate with bolts. The cover plate is placed on the oil filter tank 24, so that the second filter element 29 drives the second slot 215 to align with the second insert 217. Similarly, the matching of the second insert 217 with the second slot 215 and the rectangular cross-section design ensure the stability of the connection. The cover plate is then re-secured to the oil filter tank 24, ensuring that the first insert 213 and the first slot 214, and the second slot 215 and the second insert 217 are in the plugged-in state.

[0036] When the oil filter tank 24 is put into operation, the second delivery pump 25 is started to deliver the lubricating oil from the external oil tank 23 to the oil filter tank 24. At this time, the first filter element 28 and the second filter element 29 perform two-stage filtration of the lubricating oil, ensuring that the cleanliness of the lubricating oil meets the injection standard. During the filtration process, the power component 219 is activated, and its working end drives the second insert block 217 to rotate through the bevel gear assembly 218. Since the cross-section of the first insert block 213 and the second insert block 217 are both rectangular, the first insert block 213 drives the first connecting block 210 and the second connecting block 211 to rotate, which in turn drives the two anti-clogging components 212 to rotate inside the first filter element 28 and the second filter element 29, respectively. The rotational movement of the anti-clogging components 212 can effectively sweep away the impurities filtered by the first filter element 28 and the second filter element 29, preventing the filter holes from clogging, reducing the residence time of impurities in the filter holes, and thus improving the filtration efficiency. This allows the oil filter tank 24 to operate continuously and efficiently without frequent cleaning or shutdown, ensuring the stability and production efficiency of the equipment.

[0037] Working principle: During the operation of the reactor shaft seal lubrication and replacement system in the polyester unit, the second transfer pump 25 is started to deliver new lubricating oil from the external oil tank to the oil filter tank 24. The oil filter tank 24 performs two-stage filtration on the lubricating oil to ensure that the cleanliness of the lubricating oil meets the injection standard. The oil filter tank 24 then delivers the lubricating oil to the oil storage tank 11. The first transfer pump 2 is started, and the oil delivery pipe 21 delivers the lubricating oil in the oil storage tank 11 to the oil inlet of the reactor shaft seal lubrication system through the first transfer pump 2. At the same time, the oil outlet of the reactor shaft seal lubrication system discharges waste lubricating oil into the external waste oil tank 1 through the waste oil pipe 22. This enables the reactor shaft seal lubrication system to discharge waste oil in a timely manner without stopping the machine and to continuously supply new lubricating oil, avoiding the need for shutdown and oil change operations, ensuring continuous and stable operation of the equipment, and preventing the lubricating oil from polluting the on-site environment.

[0038] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A polyester reactor shaft seal lubrication and replacement system, applied to the reactor shaft seal lubrication system, comprising an external waste oil tank (1), an oil storage tank (11) provided on one side of the external waste oil tank (1), and the oil storage tank (11) being fitted with a cover plate, characterized in that, The reactor shaft seal lubrication and replacement system for the polyester unit also includes a lubrication replacement mechanism, a lubrication sealing mechanism, and a cleanup mechanism; The external waste oil tank (1) and the oil storage tank (11) are equipped with a lubrication replacement mechanism for changing the lubricating oil in the reactor shaft seal lubrication system; The oil storage tank (11) is provided with a lubrication sealing mechanism to maintain a sealed state when the lubrication replacement mechanism delivers lubricating oil to the oil storage tank (11); The lubrication sealing mechanism is equipped with a cleanup mechanism to prevent the lubrication sealing mechanism from conveying lubricating oil carrying impurities to the oil storage tank (11).

2. The polyester reactor shaft seal lubrication and replacement system according to claim 1, characterized in that, The lubrication replacement mechanism includes a first delivery pump (2), an oil delivery pipe fitting (21), and a waste oil pipe fitting (22); The first delivery pump (2) is connected to the oil storage tank (11); One end of the oil delivery pipe fitting (21) is connected to the first delivery pump (2), and the other end of the oil delivery pipe fitting (21) is connected to the oil injection port of the reactor shaft seal lubrication system; One end of the waste oil pipe fitting (22) is connected to the external waste oil tank (1), and the other end of the waste oil pipe fitting (22) is connected to the oil drain port of the reactor shaft seal lubrication system.

3. The polyester reactor shaft seal lubrication and replacement system according to claim 1, characterized in that, The lubrication and sealing mechanism includes an external oil tank (23), an oil filter tank (24), a second delivery pump (25), connecting pipes (26), and a control panel (27); An external oil drum (23) is located on one side of an external waste oil drum (1); The oil filter tank (24) is located on one side of the external oil tank (23); The input end of the second delivery pump (25) is connected to the external oil tank (23), and the output end of the second delivery pump (25) is connected to the oil filter tank (24); One end of the connecting pipe (26) is connected to the oil storage tank (11), and the other end of the connecting pipe (26) is connected to the oil filter tank (24); The control panel (27) is located between the external oil tank (23) and the oil filter tank (24).

4. The polyester reactor shaft seal lubrication and replacement system according to claim 1, characterized in that, The impurity removal mechanism includes a first filter element (28) and a second filter element (29); The first filter element (28) is installed inside the oil filter tank (24), and the first filter element (28) is connected to the cover plate of the oil filter tank (24); The second filter element (29) is fitted on the outside of the first filter element (28), and the second filter element (29) is connected to the cover plate of the oil filter tank (24).

5. The polyester reactor shaft seal lubrication and replacement system according to claim 4, characterized in that, The impurity removal mechanism also includes an anti-blocking mechanism, a positioning mechanism, and a transmission mechanism; An anti-clogging mechanism is provided on the first filter element (28) and the second filter element (29). The anti-clogging mechanism is used to prevent impurities in the lubricating oil from clogging the first filter element (28) and the second filter element (29). The positioning mechanism is mounted on the anti-blocking mechanism and is used to coordinate with the components of the anti-blocking mechanism to operate synchronously. The transmission mechanism is mounted on the positioning mechanism, and the transmission mechanism is used to drive the anti-blocking mechanism to move through the positioning mechanism.

6. The polyester reactor shaft seal lubrication and replacement system according to claim 5, characterized in that, The anti-blocking mechanism includes a first connecting block (210), a second connecting block (211), and two anti-blocking components (212); The first connecting block (210) is rotatably mounted on the first filter element (28); The second connecting block (211) is rotatably mounted on the second filter element (29); Two anti-blocking components (212) are connected to the first connecting block (210) and the second connecting block (211) respectively.

7. The polyester reactor shaft seal lubrication and replacement system according to claim 5, characterized in that, The positioning mechanism includes a first insert (213), a first slot (214), a second slot (215), a bracket (216), and a second insert (217); The first insert (213) is connected to the second connecting block (211); The first slot (214) is located on the side of the first connecting block (210) near the first insert block (213), and the first slot (214) is inserted into the first insert block (213); The second slot (215) is located on the underside of the first connecting block (210); The bracket (216) is connected to the inside of the oil filter tank (24); The second insert (217) is rotatably mounted on the bracket (216) and is inserted into the second slot (215).

8. The polyester reactor shaft seal lubrication and replacement system according to claim 5, characterized in that, The transmission mechanism includes a bevel gear assembly (218) and a power component (219); The bevel gear assembly (218) is rotatably mounted inside the bracket (216), and the working end of the bevel gear assembly (218) is connected to the second insert block (217); The power unit (219) is located outside the oil filter tank (24), and the working end of the power unit (219) is connected to the working end of the bevel gear assembly (218) away from the second insert (217) via the central rod.

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