Maintenance tool for slurry pump of thermal power plant

Abstract

The utility model provides a thermal power plant slurry pump maintenance tool which comprises a front fixing device, a rear fixing device, a connecting tool, a maintenance tool and a disassembling tool, the front fixing device is provided with a maintenance tool channel, the rear fixing device is provided with a disassembling tool channel, the front fixing device is connected with the rear fixing device through the connecting tool, and the disassembling tool is connected with the rear fixing device through the disassembling tool channel. And the disassembling tool is arranged on the rear fixing device through the disassembling tool channel. And the maintenance tool is arranged on the front fixing device through the maintenance tool channel. The device is simple in structure, convenient to install, safe and reliable, and can effectively meet the disassembly work of the thermal power plant slurry pump; the tool is low in cost, can complete one-time processing, meets the maintenance requirement, improves the maintenance efficiency, and ensures the safe maintenance work; the problems that the lining plate and the shell as well as the lining plate and the driving shaft are tightly combined and cannot be disassembled and the lining plate cannot be hoisted without hoisting points are effectively solved, and spare parts can be smoothly disassembled.

Description

Technical Field

[0001] The utility model relates to a maintenance tool, in particular to a maintenance tool for a slurry pump of a thermal power plant. Background Art

[0002] In the prior art, a slurry pump is a pump made according to the centrifugal principle for conveying solid-liquid mixtures. The slurry pump has a wide range of applications, such as ore slurry, gravel, ash, etc. Therefore, the working environment of the slurry pump is filled with a lot of dust and water. It runs in harsh conditions for a long time. It is often difficult to remove spare parts during maintenance, which affects the maintenance window. In particular, after the front shell and impeller of the slurry pump are removed, the liner is tightly connected to the drive shaft and there is no fixed hanging point. After the connecting nut is removed, there is no hanging point for the liner, and the liner cannot be removed, making maintenance difficult. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a slurry pump maintenance tool for a thermal power plant, and its technical solution is as follows:

[0004] The utility model provides a maintenance tool for a slurry pump in a thermal power plant, comprising a front fixing device, a rear fixing device, a connecting tool, a maintenance tool and a disassembly tool, wherein the front fixing device is provided with a maintenance tool channel, the rear fixing device is provided with a disassembly tool channel, the front fixing device is connected to the rear fixing device through the connecting tool, the disassembly tool is arranged on the rear fixing device through the disassembly tool channel, the maintenance tool comprises a proximal tube and a distal tube, the inner wall of the proximal tube is provided with a thread, the outer diameter of the distal tube matches the maintenance tool channel, the outer diameter of the proximal tube is larger than the outer diameter of the distal tube, the distal end of the proximal tube is rotatably connected to the proximal end of the distal tube, and the distal tube is passed through the maintenance tool channel and arranged on the front fixing device.

[0005] Optionally, the front fixing device is plate-shaped.

[0006] Optionally, the rear fixing device is in the shape of a plate.

[0007] Optionally, the connecting tool includes a connecting bolt and a connecting nut, the top and bottom ends of the front fixing device and the rear fixing device are penetrated by the connecting bolt, and the ends of the connecting bolts are fixed to the front fixing device and the rear fixing device through the connecting nuts.

[0008] Optionally, the disassembly tool includes a bracket, a driving handle, a driving gear and a driven component, the driven component includes a driven gear, a threaded rod and a nut disassembly tube, the driving handle is fixedly connected to an eccentric part of one side of the driving gear, the driving gear engages with the driven gear, the driven gear is in a circular ring shape, the inner wall of the driven gear is provided with a thread, the threaded rod is threaded through the driven gear, the nut disassembly tube is fixedly connected to the driven gear, the threaded rod is located at the center of the nut disassembly tube, and the bracket supports the driving gear and the driven component.

[0009] Optionally, a hanging point hole is provided on the distal side wall of the distal tube, and a hanging point ring is provided on the proximal outer wall of the proximal tube, and the hanging point hole and the hanging point ring are located on the same side of the maintenance tool.

[0010] Optionally, a hanging point hole is provided on the distal side wall of the distal tube, and two hanging point rings are symmetrically provided on the proximal outer wall of the proximal tube, and the two hanging point rings are located on both sides of the side where the hanging point hole is located.

[0011] Optionally, a rubber pad is further included, and the end of the threaded rod located in the nut disassembly tube is fixedly connected to the rubber pad.

[0012] Optionally, there are two driven components, and the two driven components are symmetrically distributed relative to the center of the driving gear.

[0013] Optionally, a baffle is provided on the outer wall of one end of the nut disassembling tube close to the driven gear, and there is a space between the baffle and the driven gear.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the device has a simple structure, is easy to install, safe and reliable, and can effectively meet the dismantling work of the slurry pump in a thermal power plant; the tool cost is low, and the processing can be completed in one time, which meets the maintenance needs, improves the maintenance efficiency, and ensures that the maintenance work is carried out safely; it can effectively solve the difficulties such as the liner and the shell, the liner and the drive shaft are tightly combined and cannot be disassembled, and the liner has no lifting points and cannot be lifted, thereby ensuring the smooth dismantling of spare parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of a disassembly tool according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the maintenance tool of the embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of a slurry pump according to an embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of a slurry pump in a disassembled state according to an embodiment of the utility model;

[0020] In the figure: 1. front fixing device; 2. rear fixing device; 3. distal tube; 4. proximal tube; 5. connecting tool; 6. bracket; 7. driving handle; 8. driving gear; 9. driven gear; 10. threaded rod; 11. nut disassembly tube; 12. baffle; 13. pump housing; 14. driving shaft; 15. lining plate; 16. driving shaft bolt; 17. pump connecting bolt; 18. pump connecting nut; 19. disassembly tool. DETAILED DESCRIPTION Example 1

[0021] This embodiment 1 discloses a maintenance tool for a slurry pump in a thermal power plant, which includes a front fixing device 1, a rear fixing device 2, a connecting tool 5, a maintenance tool and a disassembly tool 19. The front fixing device 1 is provided with a maintenance tool channel, and the rear fixing device 2 is provided with a disassembly tool channel. The front fixing device 1 is connected to the rear fixing device 2 through the connecting tool 5, and the disassembly tool 19 is arranged on the rear fixing device 2 through the disassembly tool channel. The maintenance tool includes a proximal tube 4 and a distal tube 3. The inner wall of the proximal tube 4 is provided with a thread, and the outer diameter of the distal tube 3 matches the maintenance tool channel. The outer diameter of the proximal tube 4 is larger than the outer diameter of the distal tube 3. The distal end of the proximal tube 4 is rotatably connected to the proximal end of the distal tube 3, and the distal tube 3 is passed through the maintenance tool channel and arranged on the front fixing device 1.

[0022] In some embodiments, the front fixing device 1 is in a plate shape.

[0023] In some embodiments, the rear fixing device 2 is in a plate shape.

[0024] In some embodiments, the connecting tool 5 includes a connecting bolt and a connecting nut, the top and bottom ends of the front fixing device 1 and the rear fixing device 2 are passed through by the connecting bolt, and the ends of the connecting bolts are fixed to the front fixing device 1 and the rear fixing device 2 through the connecting nuts.

[0025] Exemplary: Figure 1 As shown, Figure 4 The slurry pump shown is installed on the thermal power plant slurry pump maintenance tool disclosed in this embodiment 1, the proximal pipe 4 is rotated and threadedly connected to the drive shaft bolt 16 of the slurry pump, the pump connecting nut 18 of the slurry pump is removed, and the pump connecting bolt 17 of the slurry pump is pushed out by the disassembly tool 19, and the liner 15 of the slurry pump is also pushed out, and the liner 15 of the slurry pump is passed through by the proximal pipe 4, and the proximal pipe 4 is rotated and removed from the drive shaft bolt 16 of the slurry pump, and the liner 15 of the slurry pump is also as shown. Figure 5 As shown, the distal pipe 3 passes through. Since the outer diameter of the distal pipe 3 is smaller than the hole of the liner 15 of the slurry pump, there is a gap between the two. At the same time, loosen the connecting bolts and connecting nuts, separate the maintenance tool from the front fixing device 1, pass the sling through the gap between the distal pipe 3 and the liner 15, and lift the liner 15 to the inspection site by the lifting tool to complete the maintenance work.

[0026] By using the thermal power plant slurry pump maintenance tool provided in this embodiment, the proximal pipe 4 protects the drive shaft bolts 16 from being damaged, and the distal pipe 3 provides a hanging point for the liner 15 . Example 2

[0027] The thermal power plant slurry pump maintenance tool provided in this embodiment 2 is different from that in embodiment 1 in that:

[0028] The thermal power plant slurry pump maintenance tool provided in this embodiment 2 has a hanging point hole on the distal side wall of the distal tube 3, and a hanging point ring on the proximal outer wall of the proximal tube 4, and the hanging point hole and the hanging point ring are located on the same side of the maintenance tool.

[0029] Exemplary: Figure 1 As shown, Figure 4 The slurry pump shown is installed on the thermal power plant slurry pump maintenance tool disclosed in this embodiment 1, the proximal pipe 4 is rotated and threadedly connected to the drive shaft bolt 16 of the slurry pump, the pump connecting nut 18 of the slurry pump is removed, and the pump connecting bolt 17 of the slurry pump is pushed out by the disassembly tool 19, and the liner 15 of the slurry pump is also pushed out, and the liner 15 of the slurry pump is passed through by the proximal pipe 4, and the proximal pipe 4 is rotated and removed from the drive shaft bolt 16 of the slurry pump, and the liner 15 of the slurry pump is also as shown. Figure 5 As shown, the distal pipe 3 is passed through, and the connecting bolts and connecting nuts are loosened at the same time, the maintenance tool is separated from the front fixing device 1, the lifting belt is passed through the lifting point ring and the lifting point hole, and the lining plate 15 is lifted to the inspection site by the lifting tool to complete the maintenance work.

[0030] By using the thermal power plant slurry pump maintenance tool provided in this embodiment, the lifting point ring and the lifting point hole simultaneously provide lifting points for the liner 15, so that the liner 15 is more stable during movement. Example 3

[0031] The thermal power plant slurry pump maintenance tool provided in this embodiment 3 is different from that in embodiment 1 in that:

[0032] The thermal power plant slurry pump maintenance tool provided in this embodiment 3 has a hanging point hole on the distal side wall of the distal tube 3, and two hanging point rings are symmetrically provided on the proximal outer wall of the proximal tube 4, and the two hanging point rings are located on both sides of the side where the hanging point hole is located.

[0033] Exemplary: Figure 1 As shown, Figure 4 The slurry pump shown is installed on the thermal power plant slurry pump maintenance tool disclosed in this embodiment 1, the proximal pipe 4 is rotated and threadedly connected to the drive shaft bolt 16 of the slurry pump, the pump connecting nut 18 of the slurry pump is removed, and the pump connecting bolt 17 of the slurry pump is pushed out by the disassembly tool 19, and the liner 15 of the slurry pump is also pushed out, and the liner 15 of the slurry pump is passed through by the proximal pipe 4, and the proximal pipe 4 is rotated and removed from the drive shaft bolt 16 of the slurry pump, and the liner 15 of the slurry pump is also as shown. Figure 5 As shown, the distal pipe 3 is passed through, and the connecting bolts and connecting nuts are loosened at the same time, the maintenance tool is separated from the front fixing device 1, the lifting belt is passed through the two lifting point rings and the lifting point holes, and the lining plate 15 is lifted to the inspection site by the lifting tool to complete the maintenance work.

[0034] By using the thermal power plant slurry pump maintenance tool provided in this embodiment, the two hanging point rings and the hanging point holes simultaneously provide hanging points for the liner 15, so that the liner 15 is more stable during the movement. Example 4

[0035] The thermal power plant slurry pump maintenance tool provided in this embodiment 4 is different from that in embodiment 1 in that:

[0036] The thermal power plant slurry pump maintenance tool provided in this embodiment 4, wherein the disassembly tool 19 includes a bracket 6, a driving handle 7, a driving gear 8 and a driven component, the driven component includes a driven gear 9, a threaded rod 10 and a nut disassembly tube 11, the driving handle 7 is fixedly connected to the eccentric part of one side of the driving gear 8, the driving gear 8 meshes with the driven gear 9, the driven gear 9 is annular, the inner wall of the driven gear 9 is provided with a thread, the threaded rod 10 is threadedly penetrated on the driven gear 9, the nut disassembly tube 11 is fixedly connected to the driven gear 9, the threaded rod 10 is located at the center of the nut disassembly tube 11, the bracket 6 supports the driving gear 8 and the driven component, and the open end of the nut disassembly tube 11 is penetrated on the rear fixing device 2 through the disassembly tool channel toward the front fixing device 1.

[0037] There are two driven components, and the two driven components are symmetrically distributed relative to the center of the driving gear 8.

[0038] Exemplary: Figure 1 As shown, Figure 4 The slurry pump shown is installed on the thermal power plant slurry pump maintenance tool disclosed in this embodiment 1, and the proximal pipe 4 is rotatably threadedly connected to the driving shaft bolt 16 of the slurry pump, as shown in FIG. Figure 2The disassembly tool 19 shown in the figure, the inner diameter of the nut disassembly tube 11 matches the size and shape of the pump connecting nut 18 of the slurry pump, the nut disassembly tube 11 is aligned with the pump connecting nut 18 of the slurry pump through the disassembly tool channel, the driving handle 7 is turned to drive the driving gear 8 to rotate, the driving gear 8 drives the driven gear 9, the driven gear 9 drives the nut disassembly tube 11 to rotate, the nut disassembly tube 11 removes the pump connecting nut 18 of the slurry pump, and at the same time the threaded rod 10 rises, the threaded rod 10 pushes out the pump connecting bolt 17 of the slurry pump, and the liner 15 of the slurry pump is also pushed out, the liner 15 of the slurry pump is passed through by the proximal tube 4, the proximal tube 4 is rotated to be removed from the drive shaft bolt 16 of the slurry pump, and the liner 15 of the slurry pump is also Figure 5 As shown, the distal pipe 3 passes through. Since the outer diameter of the distal pipe 3 is smaller than the hole of the liner 15 of the slurry pump, there is a gap between the two. At the same time, loosen the connecting bolts and connecting nuts, separate the maintenance tool from the front fixing device 1, pass the sling through the gap between the distal pipe 3 and the liner 15, and lift the liner 15 to the inspection site by the lifting tool to complete the maintenance work. Example 5

[0039] The thermal power plant slurry pump maintenance tool provided in this embodiment 5 is different from that in embodiment 1 in that:

[0040] The thermal power plant slurry pump maintenance tool provided in this embodiment 5 further includes a rubber pad, and the end of the threaded rod 10 located in the nut disassembly tube 11 is fixedly connected to the rubber pad. The rubber pad protects the pump connection bolt 17 and the threaded rod 10. Example 6

[0041] The thermal power plant slurry pump maintenance tool provided in this embodiment 6 is different from that in embodiment 6 in that:

[0042] In the thermal power plant slurry pump maintenance tool provided in this embodiment 6, a baffle 12 is provided on the outer wall of one end of the nut disassembly tube 11 close to the driven gear 9 , and there is a space between the baffle 12 and the driven gear 9 .

[0043] The blocking piece 12 prevents the driven gear 9 from contacting the rear fixing device 2, making the operation of the driven gear 9 safer.

[0044] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A maintenance tool for a slurry pump in a thermal power plant, comprising a front fixing device (1), a rear fixing device (2), a connecting tool (5), a maintenance tool and a disassembly tool (19), wherein the front fixing device (1) is provided with a maintenance tool channel, the rear fixing device (2) is provided with a disassembly tool channel, the front fixing device (1) is connected to the rear fixing device (2) via the connecting tool (5), and the disassembly tool (19) is arranged on the rear fixing device (2) via the disassembly tool channel, characterized in that: The inspection tool comprises a proximal tube (4) and a distal tube (3); the inner wall of the proximal tube (4) is provided with a thread; the outer diameter of the distal tube (3) matches the inspection tool channel; the outer diameter of the proximal tube (4) is larger than the outer diameter of the distal tube (3); the distal end of the proximal tube (4) is rotatably connected to the proximal end of the distal tube (3); and the distal tube (3) is passed through the inspection tool channel and is arranged on the front fixing device (1).

2. A thermal power plant slurry pump maintenance tool according to claim 1, characterized in that: The front fixing device (1) is in the shape of a plate.

3. A thermal power plant slurry pump maintenance tool according to claim 1, characterized in that: The rear fixing device (2) is in the shape of a plate.

4. A thermal power plant slurry pump maintenance tool according to claim 1, characterized in that: The connecting tool (5) comprises a connecting bolt and a connecting nut, the top and bottom ends of the front fixing device (1) and the rear fixing device (2) are penetrated by the connecting bolt, and the ends of the connecting bolts are fixed to the front fixing device (1) and the rear fixing device (2) via the connecting nut.

5. A thermal power plant slurry pump maintenance tool according to claim 1, characterized in that: The disassembly tool (19) comprises a bracket (6), a driving handle (7), a driving gear (8) and a driven component, wherein the driven component comprises a driven gear (9), a threaded rod (10) and a nut disassembly tube (11); the driving handle (7) is fixedly connected to an eccentric portion of one side of the driving gear (8); the driving gear (8) meshes with the driven gear (9); the driven gear (9) is annular; the inner wall of the driven gear (9) is provided with threads; the threaded rod (10) is threadedly penetrated on the driven gear (9); the nut disassembly tube (11) is fixedly connected to the driven gear (9); the threaded rod (10) is located at the center of the nut disassembly tube (11); the bracket (6) supports the driving gear (8) and the driven component; the open end of the nut disassembly tube (11) is penetrated on the rear fixing device (2) through the disassembly tool channel in the direction of the front fixing device (1).

6. A thermal power plant slurry pump maintenance tool according to claim 1, characterized in that: The distal side wall of the distal tube (3) is provided with a hanging point hole, and the proximal outer wall of the proximal tube (4) is provided with a hanging point ring, wherein the hanging point hole and the hanging point ring are located on the same side of the maintenance tool.

7. A thermal power plant slurry pump maintenance tool according to claim 1, characterized in that: The distal side wall of the distal tube (3) is provided with a hanging point hole, and the proximal outer wall of the proximal tube (4) is symmetrically provided with two hanging point rings, the two hanging point rings being located on both sides of the side where the hanging point hole is located.

8. A slurry pump maintenance tool for a thermal power plant according to claim 5, characterized in that: It also comprises a rubber pad, and the end of the threaded rod (10) located inside the nut disassembly tube (11) is fixedly connected to the rubber pad.

9. A thermal power plant slurry pump maintenance tool according to claim 5, characterized in that: There are two driven components, and the two driven components are symmetrically distributed relative to the center of the driving gear (8).

10. A slurry pump maintenance tool for a thermal power plant according to claim 5, characterized in that: A baffle (12) is provided on the outer wall of one end of the nut disassembling tube (11) close to the driven gear (9), and a space exists between the baffle (12) and the driven gear (9).

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