Quick release structure and process for balance disc of multistage centrifugal pump

Abstract

The invention relates to the technical field of centrifugal pump balance disc disassembly, and discloses a multistage centrifugal pump balance disc quick disassembly structure and process, the multistage centrifugal pump balance disc quick disassembly structure comprises an equipment shell, a main shaft assembly is arranged in an inner cavity of the equipment shell, and an impeller is installed in the inner cavity of the equipment shell. According to the quick release structure and process for the balance disc of the multistage centrifugal pump, the mounting bin is formed in the inner cavity of the shaft rod, the driving vertical rod and the driving screw are arranged in the inner cavity of the mounting bin, and the driving screw is driven under the action of the driving vertical rod, so that the clamping block is driven; the balance disc body is fixed under the action of a clamping block, a locking key does not need to be dismounted during dismounting, the convenience of dismounting the balance disc is greatly improved, in the process of driving a screw rod to rotate, a first moving block can be driven to move, then a pushing plate is made to move, the effect of driving a balance pipe body is achieved, and the service life of the balance disc body is prolonged. And the balance pipe body is pulled from the shaft rod, so that the balance disc can be disassembled more conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal pump balancing disc disassembly, in particular to a multi-stage centrifugal pump balancing disc quick-disassembly structure and process. Background Art

[0002] The balance disc of a centrifugal water pump is an important component used to balance the axial force in a multistage centrifugal pump. The main function of the balance disc is to balance the axial force generated when the centrifugal pump is running, reduce the load on the pump shaft and bearings, and thus improve the operating stability and reliability of the pump. In a multistage centrifugal pump, the axial force generated by the impeller is large. If it is not balanced, it will cause excessive wear of the pump shaft and bearings, and even cause equipment failure. When maintaining the centrifugal pump, the balance disc needs to be inspected and disassembled.

[0003] When disassembling a traditional centrifugal pump balance plate, it is necessary to remove the lock key on the shaft rod, use professional tools to pry open the lock key, and screw bolts on the outer wall of the balance plate before pulling the balance plate out of the mounting slot to achieve disassembly of the balance plate. When fixing the balance plate, many fixing bolts are often used to install the balance plate in the mounting slot, which indirectly makes it inconvenient to disassemble the balance plate and requires multiple bolts to be removed. Summary of the invention

[0004] The present invention provides a multi-stage centrifugal pump balancing disc quick-disassembly structure and process, which solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a quick-release structure of a balancing disc of a multi-stage centrifugal pump, comprising an equipment shell, an inner cavity of the equipment shell being provided with a main shaft assembly, an inner cavity of the equipment shell being installed with an impeller, an inner wall of the equipment shell being fixedly equipped with a partition, an outer wall of the equipment shell being provided with a sealing bin, an outer wall of the sealing bin being provided with a sealing plate, an outer wall of the sealing plate being provided with a balancing assembly, an inner wall of the equipment shell being provided with a fixing assembly, a balancing plate being provided with an outer wall of the equipment shell, a locking rod being fixedly equipped with an outer wall of the balancing plate, a locking groove being provided on an outer wall of the locking rod, a support seat being fixedly equipped with a bottom of the equipment shell, an inlet pipe being fixedly equipped with a water outlet pipe, and a conduit being fixedly equipped with a guide tube.

[0006] As a preferred technical solution of the present invention: the main shaft assembly includes a shaft rod, the inner cavity of the shaft rod is provided with an installation bin, the inner wall of the installation bin is fixedly equipped with a fixing plate, the inner cavity of the fixing plate is rotatably connected with a driving vertical rod, the outer wall of the driving vertical rod is fixedly equipped with a No. 1 bevel gear, the inner wall of the installation bin is fixedly equipped with a support plate, the inner cavity of the support plate is rotatably connected with a driving screw, the outer wall of the driving screw is fixedly equipped with a No. 2 bevel gear, the outer wall of the No. 2 bevel gear is threadedly connected to a No. 1 moving block, the outer wall of the No. 2 bevel gear is threadedly connected to a No. 2 moving block, the outer wall of the No. 2 moving block is rotatably connected to an auxiliary plate, the outer wall of the auxiliary plate is rotatably connected to a clamping block, the outer wall of the No. 1 moving block is fixedly equipped with a pushing plate, the outer wall of the shaft rod is provided with a clamping groove, and the outer wall of the support plate is fixedly equipped with a limiting rod.

[0007] As a preferred technical solution of the present invention: the balancing assembly includes a balancing coil, the outer wall of the balancing coil is fixedly equipped with a balancing disc body, the inner wall of the balancing coil is fixedly equipped with a limiting block, and the outer wall of the limiting block is provided with an arc groove.

[0008] As a preferred technical solution of the present invention: the fixing assembly includes a mounting plate, the outer wall of the mounting plate is provided with a movable groove, the outer wall of the mounting plate is fixedly equipped with a support frame, the inner cavity of the support frame is movably sleeved with an insertion rod, the outer wall of the insertion rod is fixedly equipped with a locking plate, the top of the locking plate is fixedly equipped with a telescopic rod, the outer wall of the support frame is fixedly equipped with a fixing cylinder, the top of the fixing cylinder is fixedly equipped with a magnetic block, the top of the inner cavity of the fixing cylinder is fixedly equipped with an electromagnet, the outer wall of the support frame is fixedly equipped with a battery pack, the outer wall of the insertion rod is fixedly equipped with a pressure plate, and the outer wall of the insertion rod is movably sleeved with a reset spring.

[0009] As a preferred technical solution of the present invention: both ends of the outer wall of the driving screw are provided with external threads, and the thread directions at both ends of the outer wall of the driving screw are opposite, the outer wall of the No. 1 bevel gear and the outer wall of the No. 2 bevel gear are meshed with each other, and the clamping block passes through the inner cavity of the clamping groove and contacts the inner wall of the balancing coil.

[0010] As a preferred technical solution of the present invention: the outer wall of the push plate away from the end of the No. 1 moving block matches the shape of the outer wall of the arc groove, the limit rod passes through the inner cavity of the No. 1 moving block and the No. 2 moving block respectively, and the outer wall of the No. 1 moving block is rotatably connected to the auxiliary plate.

[0011] As a preferred technical solution of the present invention: both ends of the outer wall of the return spring are respectively connected to the outer walls of the support frame and the locking plate, and the return spring is made of high carbon steel.

[0012] As a preferred technical solution of the present invention: the battery pack is electrically connected to the electromagnet, the inner wall diameter of the locking groove is equal to the outer wall diameter of the insertion rod, and the outer wall diameter of the telescopic rod is equal to the inner wall diameter of the fixing tube.

[0013] As a preferred technical solution of the present invention: the two ends of the conduit are respectively connected to the two ends of the inner cavity of the device shell, and the shape of the outer wall of the locking plate matches the shape of the inner wall of the movable groove.

[0014] The process of quick disassembly of the balance disc of a multi-stage centrifugal pump includes the following steps: S1: When the balancing coil needs to be disassembled, the sealing chamber and the sealing plate are first separated from the outer wall of the equipment shell, and then the driving vertical rod is rotated to drive the No. 1 bevel gear to rotate. Since the outer wall of the No. 1 bevel gear and the outer wall of the No. 2 bevel gear are meshed with each other, the driving screw is driven. During the rotation of the driving screw, the No. 1 moving block and the No. 2 moving block are driven, so that the No. 1 moving block and the No. 2 moving block move along the outer wall of the driving screw respectively, and the No. 1 moving block and the No. 2 moving block move to the two ends of the outer wall of the driving screw respectively; S2: When the No. 1 moving block moves toward one end of the outer wall of the driving screw, the push plate will be driven to move. At this time, the outer wall of the push plate abuts against the outer wall of the limit block, thereby realizing the movement of the balancing coil, so that the balancing coil as a whole moves outward from the installation groove on the outer wall of the equipment shell for a distance. After the contact between the outer wall of the clamping block and the inner wall of the balancing coil is completely released, the balancing coil will move a distance driven by the push plate, and the balancing coil can be taken out from the installation groove on the outer wall of the equipment shell. S3: At this time, when the balance board needs to be disassembled, when the balance board is in normal use, the water pressure in the inner cavity of the equipment shell will act on the outer wall of the pressure plate, so that the pressure plate has a tendency to move into the inner cavity of the mounting plate, so that the insertion rod is driven, so that the outer wall of the insertion rod is inserted into the inner cavity of the locking groove, which plays a role of locking the locking rod and the balance board, so that the balance board is stably fixed in the mounting groove; S4: When the balance board needs to be disassembled, the device shell is in a stopped state, and the pressure in the inner cavity of the device shell is lost. At this time, the outer wall of the plug rod can still exist in the inner cavity of the locking groove under the action of the reset spring. Then, by starting the battery pack, the electromagnet is powered by the battery pack, so that the magnetic force of the electromagnet increases, so that the magnetic block is adsorbed by the electromagnet. Under the action of magnetic adsorption, the magnetic block drives the telescopic rod to move upward along the inner wall of the fixed tube, so that the outer wall of the plug rod is completely moved out of the inner cavity of the locking groove. At this time, the balance board can be released, thereby realizing the disassembly of the balance board. When the balance board is disassembled, there is no need to remove multiple mounting bolts.

[0015] The present invention has the following beneficial effects: 1. The multi-stage centrifugal pump balancing disc quick-disassembly structure and process, through the installation chamber opened in the inner cavity of the shaft rod, and the driving vertical rod and driving screw rod arranged in the inner cavity of the installation chamber, the driving screw rod is driven under the action of the driving vertical rod, thereby realizing the driving of the clamping block, and the balancing disc body is fixed under the action of the clamping block, and when disassembling, it is only necessary to rotate the driving vertical rod, and there is no need to disassemble the lock key, which greatly improves the convenience of disassembling the balancing disc, and in the process of rotating the driving screw rod, it can drive the movement of the No. 1 moving block, and then the push plate moves, so as to realize the driving effect on the balancing tube body, pull the balancing tube body from the shaft rod, and realize the disassembly of the balancing disc more conveniently.

[0016] 2. The quick-release structure and process of the balancing plate of the multi-stage centrifugal pump can move the pressure plate under the action of water pressure by means of a plug rod arranged in the inner cavity of the mounting plate, thereby driving the plug rod so that the plug rod enters the inner cavity of the locking rod to fix the locking rod and the balancing plate. When the balancing plate needs to be disassembled, the position of the plug rod is adjusted under the action of an electromagnet so that the telescopic rod moves upward along the inner wall of the fixing tube, thereby unlocking the locking rod. At this time, the balancing plate can be removed from the mounting groove without removing multiple fixing bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the device shell structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the device shell of the present invention; Figure 4 This is a schematic diagram of the shaft structure of the present invention; Figure 5 This is a schematic diagram of the structure of the balance board of the present invention; Figure 6 This is a schematic diagram of the installation slot structure of the present invention; Figure 7 This is a schematic diagram of the driving screw structure of the present invention; Figure 8 This is a schematic diagram of the structure of the balancing coil of the present invention; Fig. 9 This is a schematic diagram of the mounting plate structure of the present invention; Fig.10 This is a schematic diagram of the pressure plate structure of the present invention; Fig.11 For the present invention Fig.10 The enlarged structural diagram at A in the middle; Fig.12 It is a schematic diagram of the rod insertion structure of the present invention.

[0018] In the figure: 1. Equipment shell; 2. Spindle assembly; 3. Impeller; 4. Partition; 5. Sealing chamber; 6. Sealing plate; 7. Balance assembly; 8. Fixing assembly; 9. Balance plate; 10. Locking rod; 11. Locking groove; 12. Support seat; 13. Conduit; 14. Water outlet pipe; 15. Water inlet pipe; 201, shaft; 202, mounting bin; 203, fixing plate; 204, driving pole; 205, No. 1 bevel gear; 206, supporting plate; 207, driving screw; 208, No. 2 bevel gear; 209, No. 1 moving block; 2010, No. 2 moving block; 2011, auxiliary plate; 2012, clamping block; 2013, pushing plate; 2014, clamping groove; 2015, limiting rod; 701, balance coil; 702, balance plate body; 703, limit block; 704, arc groove; 801, mounting plate; 802, moving slot; 803, support frame; 804, plug rod; 805, locking plate; 806, telescopic rod; 807, fixing cylinder; 808, magnetic block; 809, electromagnet; 8010, battery pack; 8011, pressure plate; 8012, return spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 - Fig.12 A multi-stage centrifugal pump balancing disk quick-disassembly structure comprises an equipment shell 1, an inner cavity of the equipment shell 1 is provided with a main shaft assembly 2, an inner cavity of the equipment shell 1 is installed with an impeller 3, an inner wall of the equipment shell 1 is fixedly equipped with a partition 4, an outer wall of the equipment shell 1 is installed with a sealing bin 5, an outer wall of the sealing bin 5 is installed with a sealing plate 6, an outer wall of the sealing plate 6 is provided with a balancing assembly 7, an inner wall of the equipment shell 1 is provided with a fixing assembly 8, an outer wall of the equipment shell 1 is installed with a balancing plate 9, an outer wall of the balancing plate 9 is fixedly equipped with a locking rod 10, an outer wall of the locking rod 10 is provided with a locking groove 11, a bottom of the equipment shell 1 is fixedly equipped with a support seat 12, an outer wall of the equipment shell 1 is fixedly equipped with a water inlet pipe 15, an outer wall of the equipment shell 1 is installed with a water outlet pipe 14, and an outer wall of the equipment shell 1 is fixedly equipped with a conduit 13.

[0021] In the above structure, by setting the shaft 201 in the inner cavity of the equipment shell 1 and the impeller 3 installed on the outer wall of the shaft 201, the shaft 201 can drive the impeller 3 to rotate during rotation, so that the water flow can be gradually pressurized under the action of the rotation of multiple impellers 3, thereby increasing the water pressure and flow rate, so that it can flow out better and faster.

[0022] In a preferred embodiment, the spindle assembly 2 includes a shaft 201, the inner cavity of the shaft 201 is provided with a mounting chamber 202, the inner wall of the mounting chamber 202 is fixedly equipped with a fixing plate 203, the inner cavity of the fixing plate 203 is rotatably connected to a driving vertical rod 204, the outer wall of the driving vertical rod 204 is fixedly equipped with a first bevel gear 205, the inner wall of the mounting chamber 202 is fixedly equipped with a supporting plate 206, the inner cavity of the supporting plate 206 is rotatably connected to a driving screw 207, and the outer wall of the driving screw 207 is fixedly equipped with a second bevel gear 205. The outer wall of the second bevel gear 208 is threadedly connected to the first moving block 209, the outer wall of the second bevel gear 208 is threadedly connected to the second moving block 2010, the outer wall of the second moving block 2010 is rotatably connected to the auxiliary plate 2011, the outer wall of the auxiliary plate 2011 is rotatably connected to the clamping block 2012, the outer wall of the first moving block 209 is fixedly equipped with a pushing plate 2013, the outer wall of the shaft 201 is provided with a clamping groove 2014, and the outer wall of the support plate 206 is fixedly equipped with a limiting rod 2015.

[0023] In the above structure, by means of the driving screw 207 arranged in the inner cavity of the shaft 201, and the moving block No. 1 209 and the moving block No. 2 2010 arranged on the outer wall of the driving screw 207, the moving block No. 1 209 and the moving block No. 2 2010 can be driven during the rotation of the driving screw 207, so that the moving block No. 1 209 and the moving block No. 2 2010 move toward each other along the outer wall of the driving screw 207, thereby pushing the movement of the clamping block 2012, so that the clamping block 2012 expands outward, thereby achieving a fixing effect on the inner wall of the balancing coil 701.

[0024] In a preferred embodiment, the balancing assembly 7 includes a balancing coil 701 , a balancing disc body 702 is fixedly mounted on the outer wall of the balancing coil 701 , a limiting block 703 is fixedly mounted on the inner wall of the balancing coil 701 , and an arc groove 704 is formed on the outer wall of the limiting block 703 .

[0025] In the above structure, by setting the limit block 703 and the arc groove 704 on the inner wall of the balancing coil 701, when the balancing coil 701 needs to be disassembled, by rotating the driving screw 207, the No. 1 moving block 209 can be moved toward the end close to the No. 2 bevel gear 208 under the action of the driving screw 207, so that the outer wall of the pushing plate 2013 pushes the outer wall of the limit block 703, and the balancing coil 701 is pushed outward along the outer wall of the shaft 201 for a distance as a whole. At this time, the balancing coil 701 can be taken out from the outer wall of the equipment shell 1 as a whole.

[0026] In a preferred embodiment: the fixing component 8 includes a mounting plate 801, the outer wall of the mounting plate 801 is provided with a movable groove 802, the outer wall of the mounting plate 801 is fixedly equipped with a support frame 803, the inner cavity of the support frame 803 is movably sleeved with an insertion rod 804, the outer wall of the insertion rod 804 is fixedly equipped with a locking plate 805, the top of the locking plate 805 is fixedly equipped with a telescopic rod 806, the outer wall of the support frame 803 is fixedly equipped with a fixing cylinder 807, the top of the fixing cylinder 807 is fixedly equipped with a magnetic block 808, the top of the inner cavity of the fixing cylinder 807 is fixedly equipped with an electromagnet 809, the outer wall of the support frame 803 is fixedly equipped with a battery pack 8010, the outer wall of the insertion rod 804 is fixedly equipped with a pressure plate 8011, and the outer wall of the insertion rod 804 is movably sleeved with a return spring 8012.

[0027] In the above structure, through the mounting plate 801 set on the inner wall of the device shell 1, and the plug rod 804 set in the inner cavity of the mounting plate 801, the water flows into the inner cavity of the device shell 1 through the water inlet pipe 15, and when it is discharged from the water outlet pipe 14, the water pressure in the inner cavity of the device shell 1 will increase, so that the water pressure acts on the outer wall of the pressure plate 8011, thereby driving the plug rod 804, so that the plug rod 804 is inserted into the inner cavity of the locking rod 10, and the locking rod 10 and the balance plate 9 are fixed, so that the balance plate 9 can be stably installed on the outer wall of the device shell 1.

[0028] In a preferred embodiment: both ends of the outer wall of the driving screw 207 are provided with external threads, and the threads at both ends of the outer wall of the driving screw 207 are in opposite directions, the outer wall of the No. 1 bevel gear 205 and the outer wall of the No. 2 bevel gear 208 are meshed with each other, and the clamping block 2012 passes through the inner cavity of the clamping groove 2014 and contacts the inner wall of the balancing coil 701.

[0029] In the above structure, by means of the set driving screw 207, when the driving pole 204 is driven to rotate, the power can be transmitted to the driving screw 207 through the No. 1 bevel gear 205 and the No. 2 bevel gear 208, so that the driving screw 207 rotates. In the process of the driving screw 207 rotating, the No. 1 moving block 209 and the No. 2 moving block 2010 are driven, so that the outer wall of the clamping block 2012 can pass through the inner cavity of the clamping groove 2014 and contact with the inner wall of the balancing coil 701, thereby fixing the balancing coil 701 as a whole.

[0030] In a preferred embodiment: the outer wall of the push plate 2013 away from the end of the moving block No. 1 209 matches the outer wall shape of the arc groove 704, the limiting rod 2015 passes through the inner cavity of the moving block No. 1 209 and the moving block No. 2 2010 respectively, and the outer wall of the moving block No. 1 209 is rotatably connected to the auxiliary plate 2011.

[0031] In the above structure, by means of the limit rod 2015 set on the outer wall of the support plate 206, the limit of the No. 1 moving block 209 and the No. 2 moving block 2010 is achieved under the action of the limit rod 2015, so that the No. 1 moving block 209 and the No. 2 moving block 2010 can only move forward and backward along the outer wall of the driving screw 207 under the action of the rotation of the driving screw 207, thereby realizing the driving of the clamping block 2012, so that the outer wall of the clamping block 2012 is attached to the outer wall of the balancing coil 701, thereby fixing the balancing coil 701.

[0032] In a preferred embodiment: both ends of the outer wall of the return spring 8012 are respectively connected to the outer walls of the support frame 803 and the locking plate 805, and the return spring 8012 is made of high carbon steel.

[0033] In the above structure, by means of the support frame 803 arranged on the outer wall of the mounting plate 801 and the insertion rod 804 arranged in the inner cavity of the support frame 803, after the water flows through the pressurized inner cavity of the device shell 1, the pressure of the water flow will act on the outer wall of the pressure plate 8011, thereby driving the insertion rod 804, so that the outer wall of the insertion rod 804 enters the inner cavity of the locking rod 10, so that the locking rod 10 is fixed in the inner cavity of the mounting plate 801, and then the balance plate 9 is fixed to the outer wall of the device shell 1.

[0034] In a preferred embodiment, the battery pack 8010 is electrically connected to the electromagnet 809 , the inner diameter of the locking slot 11 is equal to the outer diameter of the insertion rod 804 , and the outer diameter of the telescopic rod 806 is equal to the inner diameter of the fixing tube 807 .

[0035] In the above structure, by means of the magnetic block 808 arranged on the top of the telescopic rod 806 and the electromagnet 809 arranged in the inner cavity of the fixed tube 807, when the balance board 9 needs to be disassembled, the electromagnet 809 is powered by the battery pack 8010, thereby increasing the magnetic force of the electromagnet 809. At this time, the magnetic block 808 can be attracted by the action of the electromagnet 809, so that the telescopic rod 806 moves upward along the inner wall of the fixed tube 807, thereby causing the outer wall of the insertion rod 804 to move upward from the inner cavity of the locking rod 10.

[0036] In a preferred embodiment, two ends of the conduit 13 are respectively connected to two ends of the inner cavity of the device shell 1 , and the outer wall shape of the locking plate 805 matches the inner wall shape of the moving groove 802 .

[0037] In the above structure, through the movable groove 802 opened in the inner cavity of the mounting plate 801, the pressure plate 8011 will move downward along the inner wall of the movable groove 802 under the action of water pressure, so that the locking plate 805 will move downward along the inner wall of the movable groove 802, so as to better enable the outer wall of the insertion rod 804 to enter the inner cavity of the locking rod 10, thereby realizing the locking of the locking rod 10 and the balance plate 9.

[0038] The process of quick disassembly of the balance disc of a multi-stage centrifugal pump includes the following steps: S1: When the balancing coil 701 needs to be disassembled, the sealing chamber 5 and the sealing plate 6 are separated from the outer wall of the equipment shell 1 first, and then the driving vertical rod 204 is rotated to drive the first bevel gear 205 to rotate under the action of the driving vertical rod 204. Since the outer wall of the first bevel gear 205 and the outer wall of the second bevel gear 208 are meshed with each other, the driving screw 207 is driven. During the rotation of the driving screw 207, the first moving block 209 and the second moving block 2010 are driven, so that the first moving block 209 and the second moving block 2010 move along the outer wall of the driving screw 207 respectively, and the first moving block 209 and the second moving block 2010 move to the two ends of the outer wall of the driving screw 207 respectively; S2: When the No. 1 moving block 209 moves toward one end of the outer wall of the driving screw 207, the pushing plate 2013 is driven to move. At this time, the outer wall of the pushing plate 2013 abuts against the outer wall of the limiting block 703, thereby realizing the movement of the balancing coil 701, so that the balancing coil 701 as a whole moves outward from the mounting groove on the outer wall of the equipment shell 1 for a distance. After the contact between the outer wall of the clamping block 2012 and the inner wall of the balancing coil 701 is completely released, the balancing coil 701 moves a distance driven by the pushing plate 2013, and the balancing coil 701 can be taken out from the mounting groove on the outer wall of the equipment shell 1. S3: At this time, when the balance board 9 needs to be disassembled, when the balance board 9 is in normal use, the water pressure in the inner cavity of the device shell 1 will act on the outer wall of the pressure plate 8011, so that the pressure plate 8011 has a tendency to move into the inner cavity of the mounting plate 801, so that the insertion rod 804 is driven, so that the outer wall of the insertion rod 804 is inserted into the inner cavity of the locking groove 11, which plays a role in locking the locking rod 10 and the balance board 9, so that the balance board 9 is stably fixed in the mounting groove; S4: When the balance board 9 needs to be disassembled, the device shell 1 is in a stopped state, and the pressure in the inner cavity of the device shell 1 is lost. At this time, the outer wall of the plug rod 804 can still be present in the inner cavity of the locking groove 11 under the action of the return spring 8012. Then, by starting the battery pack 8010, the electromagnet 809 is powered by the battery pack 8010, so that the magnetic force of the electromagnet 809 increases, so that the magnetic block 808 is adsorbed under the action of the electromagnet 809. Under the action of magnetic adsorption, the magnetic block 808 drives the telescopic rod 806 to move upward along the inner wall of the fixing tube 807, so that the outer wall of the plug rod 804 is completely moved out of the inner cavity of the locking groove 11. At this time, the fixation of the balance board 9 can be released, thereby realizing the disassembly of the balance board 9. When the balance board 9 is disassembled, there is no need to remove multiple mounting bolts.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage centrifugal pump balancing disc quick-disassembly structure, comprising a device shell (1), characterized in that: The inner cavity of the device shell (1) is provided with a main shaft assembly (2), the inner cavity of the device shell (1) is installed with an impeller (3), the inner wall of the device shell (1) is fixedly equipped with a partition plate (4), the outer wall of the device shell (1) is installed with a sealing chamber (5), the outer wall of the sealing chamber (5) is installed with a sealing plate (6), the outer wall of the sealing plate (6) is provided with a balancing assembly (7), the inner wall of the device shell (1) is provided with a fixing assembly (8), the outer wall of the device shell (1) is installed with a balancing plate (9), the outer wall of the balancing plate (9) is fixedly equipped with a locking rod (10), the outer wall of the locking rod (10) is provided with a locking groove (11), the bottom of the device shell (1) is fixedly equipped with a support seat (12), the outer wall of the device shell (1) is fixedly equipped with a water inlet pipe (15), the outer wall of the device shell (1) is installed with a water outlet pipe (14), and the outer wall of the device shell (1) is fixedly equipped with a guide tube (13).

2. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 1, characterized in that: The spindle assembly (2) comprises a shaft (201), the inner cavity of the shaft (201) is provided with a mounting chamber (202), the inner wall of the mounting chamber (202) is fixedly equipped with a fixing plate (203), the inner cavity of the fixing plate (203) is rotatably connected to a driving vertical rod (204), the outer wall of the driving vertical rod (204) is fixedly equipped with a first bevel gear (205), the inner wall of the mounting chamber (202) is fixedly equipped with a supporting plate (206), the inner cavity of the supporting plate (206) is rotatably connected to a driving screw (207), and the outer wall of the driving screw (207) is fixedly equipped with a second bevel gear (205). 08), the outer wall of the No. 2 bevel gear (208) is threadedly connected to the No. 1 moving block (209), the outer wall of the No. 2 bevel gear (208) is threadedly connected to the No. 2 moving block (2010), the outer wall of the No. 2 moving block (2010) is rotatably connected to the auxiliary plate (2011), the outer wall of the auxiliary plate (2011) is rotatably connected to the clamping block (212), the outer wall of the No. 1 moving block (209) is fixedly equipped with a pushing plate (2013), the outer wall of the shaft (201) is provided with a clamping groove (2014), and the outer wall of the support plate (206) is fixedly equipped with a limiting rod (2015).

3. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 2, characterized in that: The balancing assembly (7) comprises a balancing coil (701), a balancing coil body (702) being fixedly mounted on the outer wall of the balancing coil (701), a limiting block (703) being fixedly mounted on the inner wall of the balancing coil (701), and an arc-shaped groove (704) being formed on the outer wall of the limiting block (703).

4. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 3, characterized in that: The fixing assembly (8) comprises a mounting plate (801), the outer wall of the mounting plate (801) is provided with a movable groove (802), the outer wall of the mounting plate (801) is fixedly equipped with a support frame (803), the inner cavity of the support frame (803) is movably sleeved with an insertion rod (804), the outer wall of the insertion rod (804) is fixedly equipped with a locking plate (805), the top of the locking plate (805) is fixedly equipped with a telescopic rod (806), the outer wall of the support frame (803) is fixedly equipped with a fixing cylinder (807), the top of the fixing cylinder (807) is fixedly equipped with a magnetic block (808), the top of the inner cavity of the fixing cylinder (807) is fixedly equipped with an electromagnet (809), the outer wall of the support frame (803) is fixedly equipped with a battery pack (8010), the outer wall of the insertion rod (804) is fixedly equipped with a pressure plate (8011), and the outer wall of the insertion rod (804) is movably sleeved with a return spring (8012).

5. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 4, characterized in that: Both ends of the outer wall of the driving screw (207) are provided with external threads, and the threads at both ends of the outer wall of the driving screw (207) are in opposite directions. The outer wall of the first bevel gear (205) and the outer wall of the second bevel gear (208) are meshed with each other, and the clamping block (2012) passes through the inner cavity of the clamping groove (2014) and contacts the inner wall of the balancing coil (701).

6. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 5, characterized in that: The outer wall of the push plate (2013) at one end away from the first moving block (209) matches the shape of the outer wall of the arc-shaped groove (704); the limit rod (215) passes through the inner cavities of the first moving block (209) and the second moving block (2010) respectively; and the outer wall of the first moving block (209) is rotatably connected to the auxiliary plate (2011).

7. The multi-stage centrifugal pump balancing disk quick-release structure according to claim 6, characterized in that: The two ends of the outer wall of the return spring (8012) are respectively connected to the outer walls of the support frame (803) and the locking plate (805), and the return spring (8012) is made of high-carbon steel.

8. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 4, characterized in that: The battery pack (8010) is electrically connected to the electromagnet (809), the inner wall diameter of the locking groove (11) is equal to the outer wall diameter of the insertion rod (804), and the outer wall diameter of the telescopic rod (806) is equal to the inner wall diameter of the fixing tube (807).

9. The multi-stage centrifugal pump balancing disc quick-release structure according to claim 4, characterized in that: The two ends of the conduit (13) are respectively in communication with the two ends of the inner cavity of the device shell (1), and the shape of the outer wall of the locking plate (805) matches the shape of the inner wall of the movable groove (802).

10. The process for the quick-disassembly structure of the balancing disk of a multi-stage centrifugal pump according to claim 9, characterized in that: The following steps are involved: S1: When the balancing coil (701) needs to be disassembled, the sealing chamber (5) and the sealing plate (6) are first separated from the outer wall of the equipment shell (1), and then the driving rod (204) is rotated to drive the first bevel gear (205) to rotate under the action of the driving rod (204). Since the outer wall of the first bevel gear (205) and the outer wall of the second bevel gear (208) are meshed with each other, the driving screw (207) is driven. During the rotation of the driving screw (207), the first moving block (209) and the second moving block (210) are driven, so that the first moving block (209) and the second moving block (210) are respectively moved along the outer wall of the driving screw (207), and the first moving block (209) and the second moving block (210) are respectively moved to the two ends of the outer wall of the driving screw (207); S2: When the first moving block (209) moves toward one end of the outer wall of the driving screw (207), the pushing plate (2013) is driven to move. At this time, the outer wall of the pushing plate (2013) abuts against the outer wall of the limiting block (703), thereby realizing the movement of the balancing coil (701), so that the balancing coil (701) as a whole moves outward from the installation groove on the outer wall of the equipment shell (1) for a distance. After the contact between the outer wall of the clamping block (2012) and the inner wall of the balancing coil (701) is completely released, the balancing coil (701) moves a distance driven by the pushing plate (2013), and the balancing coil (701) can be removed from the installation groove on the outer wall of the equipment shell (1); S3: At this time, when the balancing plate (9) needs to be disassembled, when the balancing plate (9) is in normal use, the water pressure in the inner cavity of the device shell (1) will act on the outer wall of the pressure plate (8011), so that the pressure plate (8011) has a tendency to move into the inner cavity of the mounting plate (801), thereby driving the insertion rod (804), so that the outer wall of the insertion rod (804) is inserted into the inner cavity of the locking groove (11), and the locking rod (10) and the balancing plate (9) are locked, so that the balancing plate (9) is stably fixed in the mounting groove; S4: When the balance board (9) needs to be disassembled, the device shell (1) is in a stopped state, and the pressure in the inner cavity of the device shell (1) is lost. At this time, under the action of the return spring (8012), the outer wall of the plug rod (804) can still be present in the inner cavity of the locking groove (11). Then, by starting the battery pack (8010), the electromagnet (809) is powered under the action of the battery pack (8010), so that the magnetic force of the electromagnet (809) increases, so that the magnetic block (808) is attracted under the action of the electromagnet (809). Under the action of the magnetic attraction, the magnetic block (808) drives the telescopic rod (806) to move upward along the inner wall of the fixing tube (807), so that the outer wall of the plug rod (804) is completely moved out of the inner cavity of the locking groove (11). At this time, the fixation of the balance board (9) can be released, thereby realizing the disassembly of the balance board (9). When the balance board (9) is disassembled, there is no need to remove multiple mounting bolts.

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