Bearing housing for vertical pump

Abstract

The utility model provides a bearing box body for a vertical pump. The bearing box body comprises a motor, a coupler, a shaft, a jacking bolt, a bearing sleeve, a bearing, a bearing box, a tightening bolt, a mechanical seal, a lining, a fastening screw, a fixed seat and a longitudinal bracket, the lower end of the coupler is connected with the shaft; the mechanical seal is sleeved on the shaft; a bearing sleeve is sleeved on the shaft; a bearing is sleeved on the bearing sleeve and is arranged in the bearing box; the shaft is further sleeved with a lining, and the lining is arranged at the lower end of the bearing sleeve. The bushing is detachably connected with the bearing box; the bearing sleeve, the bearing and the bearing box can be quickly disassembled without moving the motor when the mechanical seal of the vertical pump is replaced, and the technical effect of quickly replacing the mechanical seal is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vertical pumps, in particular to a bearing box body for a vertical pump. Background Art

[0002] API610 standard VS6 vertical barrel pump can transport various clean, polluted, low-temperature or high-temperature, chemically neutral or corrosive liquids. It is mainly used in refineries, petrochemicals, cryogenic projects, pipeline pressure regulation or offshore platforms, energy industry condensate extraction, and liquefied gas projects. The pump seal is usually used in harsh working conditions with easily vaporized or gas-containing media, which can easily cause damage to the seal. The workload of replacing the mechanical seal of this vertical pump is very large, and sometimes it is necessary to use lifting equipment to lift the motor, disassemble the motor frame and bearing frame, etc. Utility Model Content

[0003] In view of the above problems, the purpose of this application is to provide a bearing housing for a vertical pump, so that it can reduce the difficulty of maintenance, reduce the workload of on-site disassembly, and achieve the technical effect of replacing the mechanical seal without moving the motor.

[0004] To achieve some or all of the above-mentioned purposes or other purposes, the present application provides the following technical solutions: a bearing housing for a vertical pump, a motor, a coupling, a shaft, a lifting bolt, a bearing sleeve, a bearing, a bearing housing, a tightening bolt, a mechanical seal, a bushing, a fastening screw, a fixing seat and a longitudinal bracket; the motor is connected to the upper end of the coupling, and the lower end of the coupling is connected to the shaft; the mechanical seal sleeve is arranged on the shaft; a bearing sleeve is sleeved on the shaft; a bearing is sleeved on the bearing sleeve, and the bearing is arranged in the bearing housing; a bushing is also sleeved on the shaft, and the bushing is arranged at the lower end of the bearing sleeve; the bushing is detachably connected to the bearing housing; the lower end of the bushing An annular boss is provided, the upper end surface of which contacts the bearing box and is connected by a fastening screw; the fixing seat is connected to the longitudinal bracket; the fixing seat is provided with a mounting hole and a ring plate fixing hole, and the bearing box is placed in the mounting hole; a ring plate is fixedly provided on the outer surface of the bearing box, and the ring plate is provided above the fixing seat, and two types of through holes are provided on the ring plate, namely a fixed threaded through hole and a jacking threaded through hole, and the fixed threaded through hole matches the ring plate fixing hole; the tightening bolt passes through the ring plate fixing hole and the fixed threaded through hole to connect the ring plate with the fixing seat, and a jacking bolt is provided on the jacking threaded through hole.

[0005] Furthermore, the bearing box includes a bearing cover and a bearing box body; the lower end of the bearing cover is connected to the upper end of the bearing box body; the bearing cover is sleeved on the shaft, the bearing box body is connected to the upper end surface of the annular boss, and a ring plate is fixedly arranged on the outer surface of the bearing box body; during operation, the ring plate is fixedly connected to the fixed seat, and when replacing the seal, first remove the tightening bolts, rotate the ring plate by a certain angle, and then separate the ring plate from the fixed seat by the force of the lifting bolts on the fixed seat.

[0006] Furthermore, it also includes an adjusting nut; the adjusting nut is arranged on the upper end of the bearing sleeve.

[0007] Furthermore, it also includes a pressure cover; the pressure cover is arranged between the bearing outer ring and the bearing box, and the pressure cover is in contact with the upper end surface of the bearing outer ring.

[0008] Furthermore, it also includes a sealing ring, which is arranged on the outer peripheral surface of the bushing and contacts and seals with the bearing box.

[0009] Furthermore, it also includes a key; a key is fixed on the shaft, and the key is arranged above the bushing; and a bearing box body and a bushing are separated. When the bearing sleeve, bearing and bearing box are removed, the key retained on the shaft and the inner hole of the bushing will not interfere with each other.

[0010] Furthermore, the fixing threaded through holes are evenly arranged on the ring plate, the lifting threaded through holes are evenly arranged on the ring plate, and the fixing threaded through holes and the lifting threaded through holes are cross-arranged.

[0011] Furthermore, the lifting bolt passes through the ring plate and contacts the fixing seat.

[0012] Compared with the prior art, the utility model has the following beneficial effects: when replacing the mechanical seal of a vertical pump, the bearing sleeve, bearing and bearing box can be removed without moving the motor, so as to facilitate the replacement of the mechanical seal. When replacing the mechanical seal, the coupling is first removed to leave a certain space; the bushing is detachably connected to the bearing box body, the fastening screws are removed, and the bushing is pulled out from the bottom. The matching of the bearing sleeve and the shaft is a clearance match, and the bearing sleeve, bearing and bearing box can be easily moved on the shaft, and then the bearing sleeve, bearing and bearing box are removed from the space left by removing the coupling, and finally the mechanical seal is removed, which greatly reduces the difficulty of disassembly, realizes the rapid disassembly of the bearing sleeve, bearing and bearing box, and the rapid replacement of the mechanical seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure below the motor of the utility model in the working state;

[0014] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0015] Figure 3 This is a schematic diagram of the structure below the motor during the process of disassembling the bearing box;

[0016] Figure 4 for Figure 3 A partial enlarged schematic diagram of B in the middle;

[0017] Figure 5This is a schematic diagram of the structure below the motor when the bearing box is separated from the shaft;

[0018] Figure 6 It is a structural schematic diagram of the motor in the utility model;

[0019] Figure 7 It is a schematic diagram of the position of the ring plate hole on the bearing housing;

[0020] Figure 8 It is a schematic diagram of the position of the fixed seat hole;

[0021] In the figure: 1. motor; 2. coupling; 3. shaft; 4. bearing cover; 5. adjusting nut; 6. pressure cover; 7. key; 8. lifting bolt; 9. bearing sleeve; 10. bearing; 11. bearing housing; 1101. ring plate; 12. tightening bolt; 13. mechanical seal; 14. sealing ring; 15. bushing; 16. fastening screw; 17. fixing seat; 18. longitudinal bracket; 101. mounting hole; 102. ring plate fixing hole; 103. fixing threaded through hole; 104. lifting threaded through hole. DETAILED DESCRIPTION

[0022] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See attached Figure 1-8 , including a motor 1, a coupling 2, a shaft 3, a lifting bolt 8, a bearing sleeve 9, a bearing 10, a bearing box, a tightening bolt 12, a mechanical seal 13, a bushing 15, a fastening screw 16, a fixing seat 17 and a longitudinal bracket 18; the motor 1 is connected to the upper end of the coupling 2, and the lower end of the coupling 2 is connected to the shaft 3; the mechanical seal 13 is sleeved on the shaft 3; the shaft 3 is sleeved with a bearing sleeve 9; the bearing 10 is sleeved on the bearing sleeve 9, and the bearing 10 is arranged in the bearing box; the shaft 3 is also sleeved with a bushing 15, and the bushing 15 is arranged at the lower end of the bearing sleeve 9; the bushing 15 is detachably connected to the bearing box; the lower end of the bushing 15 is provided with an annular boss, and the upper end surface of the annular boss It is in contact with the bearing box and connected by a fastening screw 16; the fixing seat 17 is connected to the longitudinal bracket 18; the fixing seat 17 is provided with a mounting hole 101 and a ring plate fixing hole 102, and the bearing box is placed in the mounting hole 101; a ring plate is fixedly provided on the outer surface of the bearing box, and the ring plate is provided on the fixing seat 17, and two types of through holes are provided on the ring plate, namely a fixed threaded through hole 103 and a jacking threaded through hole 104, and the fixed threaded through hole 103 matches the ring plate fixing hole 102; the tightening bolt 12 passes through the ring plate fixing hole 102 and the fixed threaded through hole 103 to connect the ring plate with the fixing seat 17, and a jacking bolt 8 is provided on the jacking threaded through hole 104.

[0024] Threaded holes should be reserved on the annular boss of the bushing to facilitate pulling out the bushing with fastening bolts and other parts during disassembly; the bearing housing can be easily disassembled without the need for specially made tooling.

[0025] The bearing box includes a bearing cover 4 and a bearing box body 11; the lower end of the bearing cover 4 is connected to the upper end of the bearing box body 11; the bearing cover 4 is sleeved on the shaft 3, the bearing box body 11 is connected to the upper end surface of the annular boss, and an annular plate is fixedly arranged on the outer surface of the bearing box body 11.

[0026] The bearing sleeve 9 further comprises an adjusting nut 5 , which is arranged at the upper end of the bearing sleeve 9 .

[0027] It also includes a pressure cover 6; the pressure cover 6 is arranged between the outer ring of the bearing 10 and the bearing box, and the pressure cover 6 is in contact with the upper end surface of the outer ring of the bearing 10.

[0028] It also includes a sealing ring 14, which is arranged between the outer circumference of the bushing 15 and the inner circumference of the bearing housing 11; the bearing housing and the bushing are separately arranged in this application, and a sealing ring and a fastening screw are added, and the bushing is installed from the bottom to the top; sealing is achieved by a sealing ring, which is locked with a fastening screw and installed on the bearing housing from the bottom, which can also achieve the function of an integrated arrangement of the bearing housing and the bushing.

[0029] When the utility model is used to remove the bearing sleeve, the bearing and the bearing box, the fastening screws 16 can be loosened before lifting the bearing box body, and then the bushing 15 can be removed, and the bushing 15 can be retained together with the sealing ring 14 at the lower part of the bearing box body, so that the bearing sleeve, the bearing and the bearing box can be lifted up with the lifting bolts 8, and the matching of the bearing sleeve 9 and the shaft 3 is a clearance match, which is very easy to disassemble, and then the bearing sleeve, the bearing and the bearing box can be moved out as a whole from the space left by removing the coupling, which greatly reduces the difficulty of disassembly, realizes the rapid disassembly of the bearing sleeve, the bearing and the bearing box, and the rapid replacement of the mechanical seal.

[0030] It also includes a key 7; the key 7 is fixedly sleeved on the shaft 3, and the key 7 is arranged above the bushing 15; if a structure in which the bearing housing and the bushing are integrated is adopted, interference between the key retained on the shaft and the inner hole of the bushing will occur when the bearing housing, the bearing and the bearing housing are removed, because the bushing is pressed into the bearing housing from top to bottom and glued together, the bearing housing will drive the bushing to rise, and the key cannot pass through the inner hole of the bushing because it is lower than the height of the key, thereby blocking the bearing housing, the bearing and the bearing housing from being moved out as a whole, and rapid disassembly is impossible; special tools must be used on site to pull the bearing housing together with the bearing out of the bearing housing, but it is difficult to implement due to limited operating space. In most cases, the entire pump motor and the bracket under the motor are lifted and removed, and then the operation is performed. The entire bearing assembly must be removed to replace the mechanical seal, which makes maintenance very difficult.

[0031] The fixing threaded through holes 103 are evenly arranged on the ring plate 1101, and the lifting threaded through holes 104 are evenly arranged on the ring plate 1101. The fixing threaded through holes 103 and the lifting threaded through holes 104 are cross-arranged. When replacing the seal, first remove the tightening bolts, rotate the ring plate by a certain angle, and then separate the ring plate from the fixing seat by the force of the lifting bolts on the fixing seat.

[0032] The jacking bolts 8 pass through the ring plate and contact the fixing seat 17 .

[0033] When replacing the mechanical seal of a vertical pump, remove the coupling and leave a certain amount of space; first move the bearing cover, adjusting nut and pressure cover out of the space left by removing the coupling, and then move the bearing sleeve, bearing and bearing housing out of the space left by removing the coupling; the length of the extended coupling section required by this application needs to meet the disassembly space.

[0034] Under harsh working conditions, mechanical seals are often easily damaged. Therefore, the design of the bearing housing in this application greatly reduces the difficulty of maintenance, reduces the workload of on-site disassembly, and realizes the replacement of seals and bearings without moving the motor, avoiding the use of large equipment such as cranes on site for lifting, making maintenance convenient and quick, and reducing maintenance costs.

[0035] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. Bearing housing for vertical pump, characterized by: The invention comprises a motor (1), a coupling (2), a shaft (3), a jacking bolt (8), a bearing sleeve (9), a bearing (10), a bearing box, a tightening bolt (12), a mechanical seal (13), a bushing (15), a tightening screw (16), a fixing seat (17) and a longitudinal bracket (18); the motor (1) is connected to the upper end of the coupling (2), and the lower end of the coupling (2) is connected to the shaft (3); the mechanical seal (13) is sleeved on the shaft (3); a bearing sleeve (9) is sleeved on the shaft (3); a bearing (10) is sleeved on the bearing sleeve (9), and the bearing (10) is arranged in the bearing box; a bushing (15) is also sleeved on the shaft (3), and the bushing (15) is arranged at the lower end of the bearing sleeve (9); the bushing (15) is detachably connected to the bearing box; an annular boss is arranged at the lower end of the bushing (15), and the upper end surface of the annular boss is in contact with the shaft The bearing box is in contact with the bearing box and is connected by a fastening screw (16); the fixing seat (17) is connected to the longitudinal bracket (18); the fixing seat (17) is provided with a mounting hole (101) and a ring plate fixing hole (102), and the bearing box is placed in the mounting hole (101); a ring plate (1101) is fixedly provided on the outer surface of the bearing box, the ring plate (1101) is arranged above the fixing seat (17), and two types of through holes are provided on the ring plate (1101), namely, a fixing threaded through hole (103) and a lifting threaded through hole (104), and the fixing threaded through hole (103) matches the ring plate fixing hole (102); the tightening bolt (12) passes through the ring plate fixing hole (102) and the fixing threaded through hole (103) to connect the ring plate (1101) with the fixing seat (17), and a lifting bolt (8) is provided on the lifting threaded through hole (104).

2. The bearing housing for a vertical pump according to claim 1, characterized in that: The bearing box comprises a bearing cover (4) and a bearing box body (11); the lower end of the bearing cover (4) is connected to the upper end of the bearing box body (11); the bearing cover (4) is sleeved on the shaft (3), the bearing box body (11) is connected to the upper end surface of the annular boss, and a ring plate (1101) is fixedly provided on the outer surface of the bearing box body (11).

3. The bearing housing for a vertical pump according to claim 1, characterized in that: It also includes an adjusting nut (5); the adjusting nut (5) is arranged on the upper end of the bearing sleeve (9).

4. The bearing housing for a vertical pump according to claim 1, characterized in that: It also includes a pressure cover (6); the pressure cover (6) is arranged between the outer ring of the bearing (10) and the bearing box, and the pressure cover (6) is in contact with the upper end surface of the outer ring of the bearing (10).

5. The bearing housing for a vertical pump according to claim 1, characterized in that: It also includes a sealing ring (14), which is arranged on the outer peripheral surface of the bushing (15).

6. The bearing housing for a vertical pump according to claim 1, characterized in that: It also includes a key (7); the key (7) is fixed on the shaft (3), and the key (7) is arranged above the bushing (15).

7. The bearing housing for a vertical pump according to claim 1, characterized in that: The fixing threaded through holes (103) are evenly arranged on the ring plate (1101), and the lifting threaded through holes (104) are evenly arranged on the ring plate (1101); the fixing threaded through holes (103) and the lifting threaded through holes (104) are cross-arranged.

8. The bearing housing for a vertical pump according to claim 1, characterized in that: The jacking bolt (8) passes through the ring plate and contacts the fixing seat (17).

Images