Auxiliary dismounting device for melt pump

Abstract

The utility model relates to an auxiliary dismounting device for a melt pump, which comprises a first heat-conducting oil circulation assembly, a second heat-conducting oil circulation assembly, a third heat-conducting oil circulation assembly and a temperature detection piece, the first heat-conducting oil circulation assembly comprises a first inlet pipe and a first outlet pipe, and two ends of the first inlet pipe are respectively communicated with a heat-conducting oil source and an inlet of a front end cover; the first outlet pipe is communicated with the outlet of the front end cover; the second heat-conducting oil circulation assembly comprises a second inlet pipe and a second outlet pipe, the two ends of the second inlet pipe communicate with the heat-conducting oil source and the pump body inlet correspondingly, and the second outlet pipe communicates with the pump body outlet; the third heat-conducting oil circulation assembly comprises a third inlet pipe and a third outlet pipe, the two ends of the third inlet pipe are communicated with the heat-conducting oil source and the rear end cover inlet respectively, and the third outlet pipe is communicated with the rear end cover outlet; the temperature detection piece is used for detecting the temperature of the bearing. According to the auxiliary dismounting device for the melt pump, parts in the melt pump body can be dismounted in a hot state.

Description

Technical Field

[0001] This utility model relates to an auxiliary disassembly device for a melt pump. Background Technology

[0002] Polyester plants typically undergo maintenance every 2-4 years during long-term operation, depending on the product types produced. The purpose of maintenance includes eliminating potential hazards in equipment operation, pipeline cleaning, technical improvements, process optimization, and equipment maintenance. Melt pump maintenance primarily involves disassembling the melt pump to inspect the wear of the driving and driven gears, bearing sleeves, and the pump body chamber, and performing related equipment checks and maintenance to eliminate potential hazards.

[0003] The melt gear pump in the polyester plant mainly serves to transport and pressurize the melt. Its main structure consists of the pump body, front cover, rear cover, drive shaft, driven shaft, bearings, spiral seals, etc. The current problem is that the internal temperature of the melt pump body is low during maintenance, and the internal components of the pump body (drive and driven gears, bearing sleeves, bearings) are difficult to disassemble. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary disassembly device for a melt pump.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A melt pump auxiliary disassembly device is disclosed. The melt pump includes a pump body, with openings at both ends of the pump body sealed by a front end cover and a rear end cover, respectively. A rotating shaft and a bearing sleeved on the rotating shaft are disposed within the pump body. The device includes a first heat transfer oil flow assembly, a second heat transfer oil flow assembly, a third heat transfer oil flow assembly, and a temperature detection element. The first heat transfer oil flow assembly includes a first inlet pipe and a first outlet pipe. The opposite ends of the first inlet pipe are respectively connected to a heat transfer oil source and the inlet of the front end cover, and the first outlet pipe is connected to the outlet of the front end cover. The second heat transfer oil flow assembly includes a second inlet pipe and a second outlet pipe. The opposite ends of the second inlet pipe are respectively connected to a heat transfer oil source and the inlet of the pump body, and the second outlet pipe is connected to the outlet of the pump body. The third heat transfer oil flow assembly includes a third inlet pipe and a third outlet pipe. The opposite ends of the third inlet pipe are respectively connected to the heat transfer oil source and the inlet of the rear end cover, and the third outlet pipe is connected to the outlet of the rear end cover.

[0007] The detection end of the temperature detection element is disposed inside the bearing, and the temperature detection element is used to detect the temperature of the bearing.

[0008] According to some embodiments of this utility model, the pump body is provided with a first inlet, a second inlet, a first outlet, and a second outlet. The first inlet and the second inlet are located on the same side of the pump body, and the first outlet and the second outlet are located on the other side of the pump body.

[0009] The second inlet pipe includes a first pipe and a second pipe connected in sequence. The two ends of the first pipe are respectively connected to the heat transfer oil source and the first inlet. The two ends of the second pipe are respectively connected to the first outlet and the second inlet. The second outlet pipe is connected to the second outlet.

[0010] According to some embodiments of this utility model, a first valve is provided on the first inlet pipe, and the first valve is used to control the opening and closing of the first inlet pipe; a second valve is provided on the first outlet pipe, and the second valve is used to control the opening and closing of the first outlet pipe.

[0011] According to some embodiments of this utility model, a third valve is provided on the second inlet pipe, and the third valve is used to control the opening and closing of the second inlet pipe; a fourth valve is provided on the second outlet pipe, and the fourth valve is used to control the opening and closing of the second outlet pipe.

[0012] According to some embodiments of this utility model, a fifth valve is provided on the third inlet pipe, and the fifth valve is used to control the opening and closing of the third inlet pipe; a sixth valve is provided on the third outlet pipe, and the sixth valve is used to control the opening and closing of the third outlet pipe.

[0013] According to some embodiments of this utility model, the device further includes an oil inlet manifold, which is connected to the first inlet pipe, the second inlet pipe, the third inlet pipe, and the heat transfer oil source.

[0014] According to some embodiments of this utility model, the device further includes an oil outlet main pipe, which is connected to the first outlet pipe, the second outlet pipe, and the third outlet pipe.

[0015] According to some embodiments of this utility model, the first outlet pipe includes a plurality of branch pipes connected in sequence, and two adjacent branch pipes are detachably connected.

[0016] According to some embodiments of this utility model, the device further includes a fixing component for fixing the temperature sensing element. The fixing component includes a sleeve, a first connector, a second connector, and a locking nut. The outer surface of the sensing part of the temperature sensing element is provided with a protrusion that protrudes outward in a radial direction. The sleeve has a receiving space for accommodating the sensing part of the temperature sensing element, and both ends of the sleeve are in communication with the receiving space. One end of the sleeve is disposed in the bearing, one end of the first connector is disposed at the other end of the sleeve, and one end of the second connector is connected to the other end of the first connector. The second connector is provided with a recess that mates with the protrusion.

[0017] According to some embodiments of this utility model, the fixing component further includes a set screw, and the side of the first connector is provided with a through hole, the through hole communicating with the receiving space, and one end of the set screw extending into the through hole to abut against the sleeve.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] The melt pump auxiliary disassembly device provided by this utility model determines whether the bearing inside the pump body needs to be disassembled based on the detection results of the temperature detection component, which is beneficial to the maintenance of the melt pump. By setting up a first heat transfer oil flow component, a second heat transfer oil flow component, and a third heat transfer oil flow component, the heat transfer oil flowing in the pump body, the front cover, and the rear cover is independent of each other, and the heating is not affected by each other. During the inspection and maintenance of the melt pump, there will be no situation where the internal components of the pump body are difficult to disassemble due to the long disassembly process and the significant temperature drop. It can realize the disassembly of the internal components of the melt pump body in a hot state, and the pump body maintains a normal temperature. The internal components of the pump body are not affected by the temperature and can be disassembled smoothly. Attached Figure Description

[0020] Appendix Figure 1 Structural diagram of the melt pump auxiliary disassembly device provided by this utility model;

[0021] Appendix Figure 2 For the appendix Figure 1 Structural diagrams of the first, second, and third heat transfer oil circulation components;

[0022] Appendix Figure 3 A structural diagram showing the temperature detection component and fixing assembly of the melt pump auxiliary disassembly device provided by this utility model, which are installed on the melt pump.

[0023] Appendix Figure 4 Exploded view of the temperature detection component and fixing assembly of the melt pump auxiliary disassembly device provided by this utility model;

[0024] Appendix Figure 5 Exploded view of the fixing component of the melt pump auxiliary disassembly device provided by this utility model;

[0025] Appendix Figure 6 The structural diagram of the temperature detection component of the melt pump auxiliary disassembly device provided by this utility model.

[0026] In the attached diagrams above:

[0027] 1-First inlet pipe; 2-First outlet pipe; 3-First pipe; 4-Second outlet pipe; 5-Third inlet pipe; 6-Third outlet pipe; 7-Temperature detection element; 71-Main body; 72-Detection part; 73-Protrusion; 8-Fixing assembly; 81-Sleeve; 82-First connector; 83-Second connector; 84-Locking nut; 85-Setting screw; 9-Main oil inlet pipe; 10-Main oil outlet pipe; 11-First valve; 12-Second valve; 13-Third valve; 14-Fourth valve; 15-Fifth valve; 16-Sixth valve; 171-Pump body; 172-Front end cover; 173-Rear end cover; 174-Drive shaft; 175-Driven shaft; 176-Bearing; 18-Heat transfer oil source; 19-Second pipe; 20-First connecting pipe; 21-Second connecting pipe; 22-Reaction vessel; 23-Filter; 24-Workbench. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] See Figures 1 to 6The illustrated melt pump auxiliary disassembly device includes a pump body 171. The openings at opposite ends of the pump body 171 are closed by a front cover 172 and a rear cover 173, respectively. A rotating shaft and a bearing 176 sleeved on the rotating shaft are disposed within the pump body 171. The front cover 172 and the rear cover 173 each have a flow space for heat transfer oil, and the pump body 171 also has a flow space for heat transfer oil. The flow spaces of the front cover 172, the rear cover 173, and the pump body 171 are independent of each other.

[0031] The melt pump auxiliary disassembly device includes a first heat transfer oil flow assembly, a second heat transfer oil flow assembly, a third heat transfer oil flow assembly, and a temperature detection element 7, wherein:

[0032] The first heat transfer oil circulation assembly includes a first inlet pipe 1 and a first outlet pipe 2. The two ends of the first inlet pipe 1 are respectively connected to the heat transfer oil source 18 and the inlet of the front cover 172. The first outlet pipe 2 is respectively connected to the outlet of the front cover 172. The other end of the first outlet pipe 2 is connected to the heat transfer oil source 18 or the heat transfer oil receiving unit. The heat transfer oil source 18 is used to provide heat transfer oil. The heat transfer oil circulates between the first inlet pipe 1, the front cover 172, and the first outlet pipe 2.

[0033] The second heat transfer oil circulation assembly includes a second inlet pipe and a second outlet pipe 4. The two ends of the second inlet pipe are respectively connected to the heat transfer oil source 18 and the inlet of the pump body 171. One end of the second outlet pipe 4 is connected to the outlet of the pump body 171, and the other end of the second outlet pipe 4 is connected to the heat transfer oil source 18 or the heat transfer oil receiving unit. The heat transfer oil circulates between the second inlet pipe, the pump body 171, and the second outlet pipe 4.

[0034] The third heat transfer oil circulation assembly includes a third inlet pipe 5 and a third outlet pipe 6. The two ends of the third inlet pipe 5 are respectively connected to the heat transfer oil source 18 and the inlet of the rear cover 173. One end of the third outlet pipe 6 is connected to the outlet of the rear cover 173, and the other end of the third outlet pipe 6 is connected to the heat transfer oil source 18 or the heat transfer oil receiving unit. The heat transfer oil circulates between the third inlet pipe 5, the rear cover 173, and the third outlet pipe 6.

[0035] In this example, a first heat transfer oil flow assembly, a second heat transfer oil flow assembly, and a third heat transfer oil flow assembly are set up. The heat transfer oil flowing inside the pump body 171, the front cover 172, and the rear cover 173 is independent of each other, and the heating does not affect each other. During the inspection and maintenance of the melt pump, there will be no situation where the internal parts (bearings and bolts) of the pump body are difficult to remove due to the long disassembly process and the large temperature drop. It can be realized that the disassembly of the melt pump can be completed in a hot state at each step.

[0036] The specific method for disassembling and repairing the melt pump using the auxiliary disassembly device in this example is as follows: First, disconnect the universal joint connecting the melt pump to the motor and remove the front cover 172 of the melt pump while it is hot. During the disassembly of the front cover 172, the pump body and the rear cover 173 are kept in a state of heat transfer oil heating. Then, the rear cover 173 of the melt pump is removed and taken out in the same way. At this time, the pump body 171 of the melt pump is always in a state of heat transfer oil heating. Then, the internal components of the pump body 171 are disassembled. At this time, the pump body 171 of the melt pump is always in a state of heat transfer oil heating, ensuring that the internal components of the pump body are successfully disassembled in one go under hot conditions. After the internal components of the pump body are disassembled, the heat transfer oil of the pump body 171 can be isolated, drained, and cooled.

[0037] In some embodiments, a first inlet is provided on the pump body 171. Figure 2 (as referred to in a), the second import ( Figure 2 (as indicated by b) and the first exit ( Figure 2 (as indicated by c) and the second exit ( Figure 2 (as indicated by d in the middle), the first inlet and the second inlet are located on the same side of the pump body 171, and the first outlet and the second outlet are located on the other side of the pump body 171; the second inlet pipe includes a first pipe 3 and a second pipe 19, the opposite ends of the first pipe 3 are respectively connected to the heat transfer oil source 18 and the first inlet, the opposite ends of the second pipe 19 are respectively connected to the first outlet and the second inlet, the second inlet is set at a higher position than the first inlet, the second outlet is set at a higher position than the first outlet, and the second pipe 19 is spirally wound; the opposite ends of the second outlet pipe 4 are respectively connected to the second outlet and the heat transfer oil receiving unit (or heat transfer oil source).

[0038] In some embodiments, a first valve 11 is provided on the first inlet pipe 1, and the first valve 11 is used to control the opening and closing of the first inlet pipe 1; a second valve 12 is provided on the first outlet pipe 2, and the second valve 12 is used to control the opening and closing of the first outlet pipe 2.

[0039] In some embodiments, a third valve 13 is provided on the second inlet pipe, which is used to control the opening and closing of the second inlet pipe; a fourth valve 14 is provided on the second outlet pipe 4, which is used to control the opening and closing of the second outlet pipe 4.

[0040] In some embodiments, a fifth valve 15 is provided on the third inlet pipe 5, which is used to control the opening and closing of the third inlet pipe 5; a sixth valve 16 is provided on the third outlet pipe 6, which is used to control the opening and closing of the third outlet pipe 6.

[0041] In this example, the device also includes an oil inlet manifold 9, which is connected to the first inlet pipe 1, the second inlet pipe, the third inlet pipe 5, and the heat transfer oil source 18. The device also includes an oil outlet manifold 10, which is connected to the first outlet pipe 2, the second outlet pipe 4, the third outlet pipe 6, and the heat transfer oil receiving unit.

[0042] In some embodiments, the first outlet pipe 2 includes a plurality of branch pipes connected in sequence, with adjacent branch pipes being detachably connected for easy installation and disassembly.

[0043] In this example, temperature sensing element 7 is used to detect the temperature of the bearing. Temperature sensing element 7 includes a main body 71 and a sensing part 72. The sensing part 72 is connected to the main body 71. The sensing end of the sensing part 72 is located inside the bearing 176, and the main body 71 of temperature sensing element 7 extends out of the pump body 171. The detection result of temperature sensing element 7 determines whether the shaft inside the pump body 171 needs to be disassembled. The judgment is accurate and facilitates the maintenance of the melt pump.

[0044] In some embodiments, the device further includes a fixing component 8 for fixing the temperature sensing element 7. The fixing component 8 includes a sleeve 81, a first connector 82, a second connector 83, and a locking nut 84. The sensing part 72 of the temperature sensing element 7 is provided with a protrusion 73, which is radially arranged around the outer periphery of the sensing part 72. The sleeve 81 has a receiving space for accommodating the sensing part 72 of the temperature sensing element 7. Both ends of the sleeve 81 are in communication with the receiving space, that is, both ends of the sleeve 81 are open. One end of the sleeve 81 is disposed in the bearing 176, one end of the first connector 82 is disposed at the other end of the sleeve 81, and one end of the second connector 83 is connected to the other end of the first connector 82. The second connector 83 is provided with a recess that cooperates with the protrusion 73. When the protrusion 73 is located in the recess, the temperature sensing element 7 is fixed to the second connector 83, that is, the temperature sensing element 7 will not detach from the sleeve 81.

[0045] In this example, the pump body 171 is provided with two rotating shafts, one of which is the drive shaft 174 and the other is the driven shaft 175. The drive shaft 174 and the driven shaft 175 are provided with two bearings 176 along their respective axial directions. A temperature detection element 7 is provided for each bearing 176. The main body 71 of the temperature detection element 7 corresponding to the two bearings 176 faces upward, and the main body 71 of the temperature detection element 7 corresponding to the other two bearings 176 faces downward. A fixing component 8 is provided to prevent the temperature detection element 7 from detaching from the bearing 176. In particular, it can stably fix the temperature detection element 7 when the main body 71 of the temperature detection element 7 faces downward.

[0046] In some embodiments, the fixing component 8 further includes a set screw 85. A through hole is provided on the side of the first connector 82, which communicates with the receiving space. The center line of the through hole is perpendicular to the center line of the first connector 82. One end of the set screw 85 extends into the through hole and abuts against the sleeve 81, so that the first connector 82 is fixed to the sleeve 81. When the first connector 82 is fixed to the sleeve 81, the second connector 83 is fixed to the first connector 82, and the temperature sensing element 7 will not detach from the sleeve 81.

[0047] In this example, the pump body 171 has a front cover 172 and a rear cover 173 at its front and rear ends, respectively, and an upper flange and a lower flange at its upper and lower ends, respectively. The upper flange and the lower flange each have a flow space for heat transfer oil. The inlet and opening of the flow space in the upper flange are connected to the heat transfer oil via a first connecting pipe 20, and the inlet and opening of the flow space in the lower flange are connected to the heat transfer oil via a second connecting pipe 21. In this example, the melt pump is mounted on a workbench.

[0048] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A melt pump auxiliary dismounting device, the melt pump comprising a pump body, the openings at both ends of the pump body being closed by a front end cover and a rear end cover respectively, and a rotating shaft and a bearing being arranged in the pump body, characterized in that, a front end cover is arranged on the front end cover of the pump body, and a rear end cover is arranged on the rear end cover of the pump body. The device comprises a first heat conducting oil flow component, a second heat conducting oil flow component, a third heat conducting oil flow component and a temperature detection member. The detection end of the temperature detection member is arranged in the bearing, and the temperature detection member is used for detecting the temperature of the bearing.

2. The melt pump assisted dismounting device according to claim 1, characterized in that The pump body is provided with a first inlet, a second inlet, a first outlet and a second outlet. The first pipe of the second inlet pipe is in communication with the heat conducting oil source and the first inlet.

3. The melt pump assisted disassembly apparatus of claim 1, wherein, The first inlet pipe is provided with a first valve for controlling the on-off of the first inlet pipe.

4. The melt pump assisted disassembly apparatus of claim 1, wherein, The second inlet pipe is provided with a third valve for controlling the on-off of the second inlet pipe.

5. The melt pump assisted disassembly apparatus of claim 1, wherein, The third inlet pipe is provided with a fifth valve for controlling the on-off of the third inlet pipe.

6. The melt pump assisted disassembly apparatus of claim 1, wherein, The device further comprises an oil inlet main pipe in communication with the first inlet pipe, the second inlet pipe, the third inlet pipe and the heat conducting oil source.

7. The melt pump assisted disassembly apparatus of claim 1, wherein, The device further comprises an oil outlet main pipe in communication with the first outlet pipe, the second outlet pipe and the third outlet pipe.

8. The melt pump assisted disassembly apparatus of claim 1, wherein, The first outlet pipe comprises a plurality of sequentially connected sub-pipes, and adjacent two sub-pipes are detachably connected.

9. The melt pump assisted disassembly apparatus of claim 1, wherein, The device also comprises a fixing assembly for fixing the temperature detecting member, the fixing assembly comprising a sleeve, a first joint, a second joint and a locking nut, an outer surface of a detecting part of the temperature detecting member being provided with a protruding part protruding outward in a radial direction; the sleeve having a containing space containing a detecting end of the temperature detecting member, opposite ends of the sleeve being penetrated by the containing space; one end of the sleeve being arranged in the bearing, one end of the first joint being arranged at the other end of the sleeve, one end of the second joint being connected with the other end of the first joint, the second joint being internally provided with a recessed part matched with the protruding part.

10. The melt pump assisted disassembly apparatus of claim 9, wherein, The fixing assembly further comprises a jackscrew, a side part of the first joint being provided with a through hole penetrated by the containing space, one end of the jackscrew being inserted into the through hole to abut against the sleeve.

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