Multi-stage centrifugal pump balance disc quick release structure and process

Abstract

The application relates to the technical field of dismounting of a balancing disc of a centrifugal pump, and discloses a quick-dismounting structure and process of a multi-stage centrifugal pump balancing disc, which comprises a device shell, a main shaft assembly is arranged in the inner cavity of the device shell, and an impeller is arranged in the inner cavity of the device shell. The quick-dismounting structure and process of the multi-stage centrifugal pump balancing disc are characterized in that: an installation bin is arranged in the inner cavity of the shaft rod, a driving vertical rod and a driving screw rod are arranged in the inner cavity of the installation bin, the driving screw rod is driven under the action of the driving vertical rod, the driving of the clamping block is realized, the fixing of the balancing disc body is realized under the action of the clamping block, the lock key does not need to be dismounted when the balancing disc is dismounted, the convenience of dismounting the balancing disc is greatly improved, the movement of the first moving block is driven in the process of rotating the driving screw rod, the pushing plate is moved, the driving effect of the balancing pipe body is realized, the balancing pipe body is pulled from the shaft rod, and the dismounting of the balancing disc is more convenient.

Description

Technical Field

[0001] This invention relates to the field of centrifugal pump balance disc disassembly technology, specifically to a quick-release structure and process for a multi-stage centrifugal pump balance disc. Background Technology

[0002] The balance disc of a centrifugal pump is a crucial component in multistage centrifugal pumps, used to balance axial forces. Its main function is to balance the axial forces generated during pump operation, reducing the load on the pump shaft and bearings, thereby improving the pump's operational stability and reliability. In multistage centrifugal pumps, the impeller generates significant axial forces. If these forces are not balanced, they can lead to excessive wear on the pump shaft and bearings, and even equipment failure. Therefore, the balance disc needs to be inspected and disassembled during centrifugal pump maintenance.

[0003] Traditional centrifugal pump balance discs require disassembling the locking key on the shaft. This necessitates using specialized tools to pry open the key and tighten bolts on the outer wall of the balance disc before it can be pulled out of the mounting slot. Furthermore, the balance disc is often secured with numerous bolts, making disassembly inconvenient as multiple bolts need to be removed. Summary of the Invention

[0004] This invention provides a quick-release structure and process for the balance disc of a multi-stage centrifugal pump, which solves the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a quick-release structure for a multi-stage centrifugal pump balance disc, comprising a housing, a main shaft assembly within the inner cavity of the housing, an impeller installed within the inner cavity of the housing, a partition fixedly mounted on the inner wall of the housing, an outlet pipe installed on the outer wall of the housing, a guide pipe fixedly mounted on the outer wall of the housing, an inlet pipe fixedly mounted on the outer wall of the housing, a sealing chamber installed at the end of the housing away from the inlet pipe, a sealing plate installed at the end of the sealing chamber away from the outlet pipe, an inwardly recessed mounting groove at the middle of the end of the housing near the outlet pipe, a balance assembly installed within the mounting groove, a fixing assembly on the inner wall of the housing near the mounting groove, a balance plate installed on the inner wall of the mounting groove, a locking rod fixedly mounted on the outer wall of the balance plate, a locking groove formed on the outer wall of the locking rod, and a support base fixedly mounted at the bottom of the housing.

[0006] As a preferred embodiment of the present invention: the spindle assembly includes a shaft, the inner cavity of the shaft has an installation chamber, the inner wall of the installation chamber is fixedly fitted with a fixing plate, the fixing plate is rotatably connected to a drive column, the outer wall of the drive column is fixedly fitted with a first bevel gear, the inner wall of the installation chamber is fixedly fitted with a support plate, the support plate is rotatably connected to a drive screw, the end of the drive screw near the first bevel gear is fixedly fitted with a second bevel gear, the outer wall of the drive screw is threadedly connected to a first moving block and a second moving block, the two side walls of the first and second moving blocks are rotatably connected to two auxiliary plates, and the ends of the two auxiliary plates on the same side of the first and second moving blocks away from the drive screw are rotatably connected to a clamping block, the outer wall of the first moving block is fixedly fitted with a push plate, the outer wall of the shaft has a clamping groove, and the side of the support plate away from the second bevel gear is fixedly fitted with a limit rod.

[0007] As a preferred technical solution of the present invention: the balancing component includes a balancing coil, a balancing disc body is fixedly assembled at the end of the balancing coil near the sealing plate, a limiting block is fixedly assembled on the inner wall of the balancing coil, an arc groove is formed on the outer wall of the limiting block, and the balancing coil is installed on the inner wall of the mounting groove in the middle of the end of the equipment shell near the water outlet pipe.

[0008] As a preferred embodiment of the present invention: the fixing assembly includes a mounting plate, the outer wall of the mounting plate has a movable groove, a support frame is fixedly mounted on the outer wall of the mounting plate, a plug rod is movably sleeved through the support frame, a locking plate is fixedly mounted on the outer wall of the plug rod, a telescopic rod is fixedly mounted on the end of the locking plate near the support frame, a fixing cylinder is fixedly mounted on the outer wall of the support frame near the locking plate, a magnet is fixedly mounted on the end of the telescopic rod near the fixing cylinder, an electromagnet is fixedly mounted on the top of the inner cavity of the fixing cylinder, a battery pack is fixedly mounted on the end of the support frame away from the locking plate, a pressure plate is fixedly mounted on the end of the plug rod away from the locking rod, and a return spring is movably sleeved on the outer wall of the plug rod.

[0009] As a preferred technical solution of the present invention: both ends of the outer wall of the drive screw are provided with external threads, and the thread directions of the two ends of the outer wall of the drive screw are opposite. The first bevel gear meshes with the second bevel gear, and the clamping block passes through the inner wall of the clamping groove and contacts the inner wall of the balance disc tube.

[0010] As a preferred technical solution of the present invention: the outer wall of the push plate at the end away from the first moving block matches the shape of the outer wall of the arc groove, and the limiting rod passes through the first moving block and the second moving block respectively.

[0011] As a preferred embodiment of the present invention: the two 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 embodiment 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 fixed cylinder.

[0013] As a preferred embodiment of the present invention: the two ends of the conduit are respectively connected to the two ends of the inner cavity of the equipment housing, and the outer wall shape of the locking plate matches the inner wall shape of the moving groove.

[0014] The manufacturing process of the quick-release structure for the balance disc of a multistage centrifugal pump includes the following steps:

[0015] S1: When it is necessary to disassemble the balance coil, first separate the sealing chamber and sealing plate from the outer wall of the equipment shell, and then rotate the drive rod. Under the action of the drive rod, the first bevel gear rotates. Since the outer wall of the first bevel gear meshes with the outer wall of the second bevel gear, the drive screw is driven. During the rotation of the drive screw, the first moving block and the second moving block are driven, so that the first moving block and the second moving block move along the outer wall of the drive screw respectively, and the first moving block and the second moving block move towards both ends of the outer wall of the drive screw respectively.

[0016] S2: As the first moving block moves toward the outer wall of the drive screw, it will drive the push plate to move. At this time, since the outer wall of the push plate abuts against the outer wall of the limit block, the balance coil is moved, so that the balance coil moves from the inside to the outside of the mounting groove opened in the middle of the end of the equipment shell near the water outlet pipe. After the outer wall of the clamping block is completely released from the contact with the inner wall of the balance coil, the balance coil will move a distance under the drive of the push plate. At this time, the balance coil can be taken out from the mounting groove opened in the middle of the end of the equipment shell near the water outlet pipe.

[0017] S3: When the balance plate is in normal use, the water pressure in the inner cavity of the equipment housing will act on the outer wall of the pressure plate, causing the pressure plate to tend to move into the inner cavity of the mounting plate, thereby driving the insertion rod and causing the outer wall of the insertion rod to insert into the inner cavity of the locking groove, which locks the locking rod and the balance plate, so that the balance plate is stably fixed in the mounting groove.

[0018] S4: When the balance plate needs to be disassembled, the equipment housing is in a stopped state, and the pressure in the inner cavity of the equipment housing is lost. At this time, under the action of the return spring, the outer wall of the insertion rod can still be kept in the inner cavity of the locking groove. Then, by starting the battery pack, the battery pack supplies power to the electromagnet, which increases the magnetic force of the electromagnet. Under the action of the electromagnet, the magnetic block is attracted. Under the action of magnetic attraction, the magnetic block drives the telescopic rod to move upward along the inner wall of the fixed cylinder, so that the outer wall of the insertion rod is completely moved out of the inner cavity of the locking groove. At this time, the fixation of the balance plate can be released, thereby realizing the disassembly of the balance plate. When disassembling the balance plate, it is not necessary to remove multiple mounting bolts.

[0019] The present invention has the following beneficial effects:

[0020] 1. The quick-release structure and process of the balance disc of this multi-stage centrifugal pump utilizes an installation chamber within the shaft cavity, and a drive rod and drive screw within the installation chamber cavity. The drive rod drives the drive screw, thereby driving the clamping block and fixing the balance disc body. During disassembly, only the drive rod needs to be rotated; the locking key does not need to be disassembled, greatly improving the convenience of balance disc disassembly. Furthermore, during the rotation of the drive screw, the first moving block can be moved, which in turn moves the push plate, driving the balance tube body and pulling it off the shaft, making balance disc disassembly even more convenient.

[0021] 2. The quick-release structure and process of the balance plate of this multi-stage centrifugal pump, through the insertion rod set in the inner cavity of the mounting plate, can move the pressure plate under the action of water pressure, thereby driving the insertion rod to enter the inner cavity of the locking rod, thus fixing the locking rod and the balance plate. When it is necessary to disassemble the balance plate, the position of the insertion rod is adjusted under the action of the electromagnet, so that the telescopic rod moves upward along the inner wall of the fixed cylinder, thereby unlocking the locking rod. At this time, the balance plate can be removed from the mounting slot without removing multiple fixing bolts. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the device housing structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the device shell of the present invention;

[0025] Figure 4 This is a schematic diagram of the shaft structure of the present invention;

[0026] Figure 5This is a schematic diagram of the balance plate structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the mounting groove structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the drive screw structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the balance coil structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the mounting plate structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the pressure plate structure of the present invention;

[0032] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point A in the middle;

[0033] Figure 12 This is a schematic diagram of the insertion rod structure of the present invention.

[0034] In the diagram: 1. Equipment housing; 2. Main shaft assembly; 3. Impeller; 4. Baffle plate; 5. Sealing chamber; 6. Sealing plate; 7. Balancing assembly; 8. Fixing assembly; 9. Balancing plate; 10. Locking rod; 11. Locking groove; 12. Support base; 13. Guide tube; 14. Water outlet pipe; 15. Water inlet pipe;

[0035] 201. Shaft; 202. Mounting chamber; 203. Fixing plate; 204. Drive column; 205. First bevel gear; 206. Support plate; 207. Drive screw; 208. Second bevel gear; 209. First moving block; 2010. Second moving block; 2011. Auxiliary plate; 2012. Clamping block; 2013. Push plate; 2014. Clamping groove; 2015. Limiting rod;

[0036] 701. Balance coil; 702. Balance disc body; 703. Limiting block; 704. Arc groove;

[0037] 801. Mounting plate; 802. Moving slot; 803. Support frame; 804. Insert 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 Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1 - Figure 12 The multi-stage centrifugal pump balance disc quick-release structure includes a housing 1, a main shaft assembly 2 inside the housing 1, an impeller 3 installed inside the housing 1, a partition 4 fixedly mounted on the inner wall of the housing 1, an outlet pipe 14 installed on the outer wall of the housing 1, a guide pipe 13 fixedly mounted on the outer wall of the housing 1, an inlet pipe 15 fixedly mounted on the outer wall of the housing 1, a sealing chamber 5 installed at the end of the housing 1 away from the inlet pipe 15, a sealing plate 6 installed at the end of the sealing chamber 5 away from the outlet pipe 14, an installation groove recessed inward at the middle of the end of the housing 1 near the outlet pipe 14, a balance assembly 7 installed in the installation groove, a fixing assembly 8 on the inner wall of the housing 1 near the installation groove, a balance plate 9 installed on the inner wall of the installation groove, a locking rod 10 fixedly mounted on the outer wall of the balance plate 9, a locking groove 11 on the outer wall of the locking rod 10, and a support base 12 fixedly mounted at the bottom of the housing 1.

[0040] In the above structure, the shaft 201 installed in the inner cavity of the equipment housing 1 and the impeller 3 installed on the outer wall of the shaft 201 can drive the impeller 3 to rotate during the rotation of the shaft 201. This allows the water flow to be gradually pressurized under the action of multiple impellers 3, thereby increasing the water pressure and flow rate and enabling it to flow outward better and faster.

[0041] In a preferred embodiment: the spindle assembly 2 includes a shaft 201, the inner cavity of which is provided with an installation chamber 202. A fixing plate 203 is fixedly mounted on the inner wall of the installation chamber 202. A drive rod 204 is rotatably connected through the fixing plate 203. A first bevel gear 205 is fixedly mounted on the outer wall of the drive rod 204. A support plate 206 is fixedly mounted on the inner wall of the installation chamber 202. A drive screw 207 is rotatably connected through the support plate 206. A second bevel gear 208 is fixedly mounted on the end of the drive screw 207 near the first bevel gear 205. The outer wall of the drive screw 207... A first moving block 209 and a second moving block 2010 are threadedly connected respectively. Two auxiliary plates 2011 are rotatably connected to both sides of the first moving block 209 and the second moving block 2010. The two auxiliary plates 2011 located on the same side of the first moving block 209 and the second moving block 2010 are rotatably connected to a clamping block 2012 at the ends away from the drive screw 207. A push plate 2013 is fixedly mounted on the outer wall of the first moving block 209. A clamping groove 2014 is opened on the outer wall of the shaft 201. A limit rod 2015 is fixedly mounted on the side of the support plate 206 away from the second bevel gear 208.

[0042] In the above structure, the drive screw 207 installed in the inner cavity of the shaft 201, and the first moving block 209 and the second moving block 2010 installed on the outer wall of the drive screw 207, can drive the first moving block 209 and the second moving block 2010 during the rotation of the drive screw 207. This causes the first moving block 209 and the second moving block 2010 to move towards each other along the outer wall of the drive screw 207, thereby pushing the clamping block 2012 to move and causing the clamping block 2012 to expand outward, thus achieving the effect of fixing the inner wall of the balance coil 701.

[0043] In a preferred embodiment: the balancing assembly 7 includes a balancing coil 701, a balancing disc body 702 is fixedly mounted on the end of the balancing coil 701 near the sealing plate 6, a limiting block 703 is fixedly mounted on the inner wall of the balancing coil 701, an arc groove 704 is opened on the outer wall of the limiting block 703, and the balancing coil 701 is installed on the inner wall of the mounting groove in the middle of the end of the equipment housing 1 near the water outlet pipe 14.

[0044] In the above structure, by using the limiting block 703 and arc groove 704 provided on the inner wall of the balance coil 701, when it is necessary to disassemble the balance coil 701, by rotating the drive screw 207, the first moving block 209 can be moved towards the end of the second bevel gear 208, thereby causing the outer wall of the push plate 2013 to push the outer wall of the limiting block 703, pushing the balance coil 701 outward along the outer wall of the shaft 201 for a certain distance, at which point the balance coil 701 can be removed from the outer wall of the equipment housing 1.

[0045] In a preferred embodiment: the fixing assembly 8 includes a mounting plate 801, the outer wall of which has a moving groove 802, a support frame 803 fixedly mounted on the outer wall of the mounting plate 801, a plug rod 804 movably sleeved through the support frame 803, a locking plate 805 fixedly mounted on the outer wall of the plug rod 804, a telescopic rod 806 fixedly mounted on the end of the locking plate 805 near the support frame 803, a fixing cylinder 807 fixedly mounted on the outer wall of the support frame 803 near the locking plate 805, a magnet 808 fixedly mounted on the end of the telescopic rod 806 near the fixing cylinder 807, an electromagnet 809 fixedly mounted on the top of the inner cavity of the fixing cylinder 807, a battery pack 8010 fixedly mounted on the end of the support frame 803 away from the locking plate 805, a pressure plate 8011 fixedly mounted on the end of the plug rod 804 away from the locking rod 10, and a return spring 8012 movably sleeved on the outer wall of the plug rod 804.

[0046] In the above structure, through the mounting plate 801 provided on the inner wall of the equipment housing 1 and the insertion rod 804 provided in the inner cavity of the mounting plate 801, water flows into the inner cavity of the equipment housing 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 equipment housing 1 will increase, thereby causing the water pressure to act on the outer wall of the pressure plate 8011, thereby driving the insertion rod 804, so that the insertion rod 804 is inserted into the inner cavity of the locking rod 10, thereby fixing the locking rod 10 and the balance plate 9, so that the balance plate 9 can be stably installed on the outer wall of the equipment housing 1.

[0047] In a preferred embodiment: both ends of the outer wall of the drive screw 207 are provided with external threads, and the threads at both ends of the outer wall of the drive screw 207 are in opposite directions. The first bevel gear 205 meshes with the second bevel gear 208, and the clamping block 2012 passes through the inner wall of the clamping groove 2014 and contacts the inner wall of the balance disc tube 701.

[0048] In the above structure, the drive screw 207, when the drive rod 204 rotates, can transmit power to the drive screw 207 through the first bevel gear 205 and the second bevel gear 208, thereby causing the drive screw 207 to rotate. During the rotation of the drive screw 207, the first moving block 209 and the second 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 the inner wall of the balance coil 701, thereby fixing the balance coil 701 as a whole.

[0049] In a preferred embodiment: the outer wall of the push plate 2013 at the end away from the first moving block 209 matches the shape of the outer wall of the arc groove 704, and the limiting rod 2015 passes through the first moving block 209 and the second moving block 2010 respectively.

[0050] In the above structure, the limiting rod 2015 provided on the outer wall of the support plate 206 restricts the first moving block 209 and the second moving block 2010 under the action of the limiting rod 2015. This allows the first moving block 209 and the second moving block 2010 to only move back and forth along the outer wall of the driving screw 207 under the action of the driving screw 207 rotation, thereby driving the clamping block 2012. This causes the outer wall of the clamping block 2012 to adhere to the outer wall of the balance coil 701, thereby fixing the balance coil 701.

[0051] In a preferred embodiment, the two ends of the outer wall of the return spring 8012 are connected to the outer walls of the support frame 803 and the locking plate 805, respectively, and the return spring 8012 is made of high carbon steel.

[0052] In the above structure, by providing a support frame 803 on the outer wall of the mounting plate 801 and an insertion rod 804 in the inner cavity of the support frame 803, after the water flow is pressurized through the inner cavity of the equipment housing 1, the pressure of the water flow will act on the outer wall of the pressure plate 8011, thereby driving the insertion rod 804, causing the outer wall of the insertion rod 804 to enter 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, thereby fixing the balance plate 9 to the outer wall of the equipment housing 1.

[0053] In a preferred embodiment: 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 cylinder 807.

[0054] In the above structure, by using the magnetic block 808 set on the top of the telescopic rod 806 and the electromagnet 809 set in the inner cavity of the fixed cylinder 807, when the balance plate 9 needs to be disassembled, the battery pack 8010 supplies power to the electromagnet 809, 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, causing the telescopic rod 806 to move upward along the inner wall of the fixed cylinder 807, thereby causing the outer wall of the insertion rod 804 to move upward from the inner cavity of the locking rod 10.

[0055] In a preferred embodiment: the two ends of the conduit 13 are respectively connected to the two ends of the inner cavity of the equipment housing 1, and the outer wall shape of the locking plate 805 matches the inner wall shape of the moving groove 802.

[0056] In the above structure, the pressure plate 8011 moves downward along the inner wall of the moving groove 802 under the action of water pressure through the moving groove 802 opened in the inner cavity of the mounting plate 801. This causes the locking plate 805 to move downward along the inner wall of the moving groove 802, thereby allowing the outer wall of the insertion rod 804 to enter the inner cavity of the locking rod 10, thus locking the locking rod 10 and the balance plate 9.

[0057] The manufacturing process of the quick-release structure for the balance disc of a multistage centrifugal pump includes the following steps:

[0058] S1: When it is necessary to disassemble the balance coil 701, first separate the sealing chamber 5 and the sealing plate 6 from the outer wall of the equipment shell 1, and then rotate the drive rod 204. Under the action of the drive rod 204, the first bevel gear 205 is rotated. Since the outer wall of the first bevel gear 205 meshes with the outer wall of the second bevel gear 208, the drive screw 207 is driven. During the rotation of the drive 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 drive screw 207 respectively, and the first moving block 209 and the second moving block 2010 move towards both ends of the outer wall of the drive screw 207 respectively.

[0059] S2: During the process of the first moving block 209 moving towards the outer wall of the drive screw 207, it will drive the push plate 2013 to move. At this time, since the outer wall of the push plate 2013 abuts against the outer wall of the limit block 703, the balance coil 701 is moved, so that the balance coil 701 moves from the inside to the outside of the mounting groove opened in the middle of the end of the equipment housing 1 near the water outlet pipe 14. After the contact between the outer wall of the clamping block 2012 and the inner wall of the balance coil 701 is completely released, the balance coil 701 will move a distance under the drive of the push plate 2013. At this time, the balance coil 701 can be taken out from the mounting groove opened in the middle of the end of the equipment housing 1 near the water outlet pipe 14.

[0060] S3: When the balance plate 9 is in normal use, the water pressure in the inner cavity of the equipment housing 1 will act on the outer wall of the pressure plate 8011, causing the pressure plate 8011 to tend 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, which locks the locking rod 10 and the balance plate 9, so that the balance plate 9 is stably fixed in the mounting groove;

[0061] S4: When it is necessary to disassemble the balance plate 9, the equipment housing 1 is in a stopped state, and the pressure in the inner cavity of the equipment housing 1 is lost. At this time, under the action of the return spring 8012, the outer wall of the insertion rod 804 can still exist in the inner cavity of the locking groove 11. Then, by starting the battery pack 8010, the battery pack 8010 supplies power to the electromagnet 809, which increases the magnetic force of the electromagnet 809. Under the action of the electromagnet 809, the magnetic block 808 is attracted. Under the action of magnetic attraction, the magnetic block 808 drives the telescopic rod 806 to move upward along the inner wall of the fixed cylinder 807, so that the outer wall of the insertion rod 804 is completely moved out of the inner cavity of the locking groove 11. At this time, the fixation of the balance plate 9 can be released, thereby realizing the disassembly of the balance plate 9. When disassembling the balance plate 9, it is not necessary to remove multiple mounting bolts.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick release structure of balancing disc for multi-stage centrifugal pump, comprising a device shell (1), characterized in that: The inner cavity of the equipment shell (1) is provided with a main shaft assembly (2), the inner cavity of the equipment shell (1) is provided with an impeller (3), the inner wall of the equipment shell (1) is fixedly provided with a partition plate (4), the outer wall of the equipment shell (1) is provided with a water outlet pipe (14), the outer wall of the equipment shell (1) is fixedly provided with a guide pipe (13), the outer wall of the equipment shell (1) is fixedly provided with a water inlet pipe (15), one end of the equipment shell (1) away from the water inlet pipe (15) is provided with a sealing bin (5), the end of the sealing bin (5) away from the water outlet pipe (14) is provided with a sealing plate (6), the equipment shell (1) is recessed inward in the middle of one end close to the water outlet pipe (14) to form an installation groove, the installation groove is provided with a balance assembly (7), the inner wall of one end of the equipment shell (1) close to the installation groove is provided with a fixing assembly (8), the inner wall of the installation groove is provided with a balance plate (9), the outer wall of the balance plate (9) is fixedly provided with a locking rod (10), the outer wall of the locking rod (10) is provided with a locking groove (11), and the bottom of the equipment shell (1) is fixedly provided with a supporting seat (12); The main shaft assembly (2) comprises a shaft rod (201), the inner cavity of the shaft rod (201) is provided with an installation bin (202), the inner wall of the installation bin (202) is fixedly provided with a fixed plate (203), the fixed plate (203) is rotatably connected with a driving vertical rod (204), the outer wall of the driving vertical rod (204) is fixedly provided with a first bevel gear (205), the inner wall of the installation bin (202) is fixedly provided with a supporting plate (206), the supporting plate (206) is rotatably connected with a driving screw rod (207), one end of the driving screw rod (207) close to the first bevel gear (205) is fixedly provided with a second bevel gear (208), the outer wall of the driving screw rod (207) is respectively threadedly connected with a first moving block (209) and a second moving block (2010), the two side walls of the first moving block (209) and the second moving block (2010) are rotatably connected with two auxiliary plates (2011), and the two ends of the two auxiliary plates (2011) on the same side of the first moving block (209) and the second moving block (2010) are rotatably connected with a clamping block (2012) away from the driving screw rod (207), the outer wall of the first moving block (209) is fixedly provided with a pushing plate (2013), the outer wall of the shaft rod (201) is provided with a clamping groove (2014), and the side of the supporting plate (206) away from the second bevel gear (208) is fixedly provided with a limiting rod (2015); The balance assembly (7) comprises a balance coil pipe (701), one end of the balance coil pipe (701) close to the sealing plate (6) is fixedly provided with a balance disc body (702), the inner wall of the balance coil pipe (701) is fixedly provided with a limiting block (703), the outer wall of the limiting block (703) is provided with an arc-shaped groove (704), and the balance coil pipe (701) is installed in the installation groove in the middle of one end of the equipment shell (1) close to the water outlet pipe (14). The fixed assembly (8) comprises a mounting plate (801), the outer wall of the mounting plate (801) is provided with a moving groove (802), the outer wall of the mounting plate (801) is fixedly provided with a support frame (803), the support frame (803) penetrates the movable sleeve and is connected with a plug rod (804), the outer wall of the plug rod (804) is fixedly provided with a locking plate (805), one end of the locking plate (805) close to the support frame (803) is fixedly provided with an extension rod (806), the outer wall of the support frame (803) close to one end of the locking plate (805) is fixedly provided with a fixed cylinder (807), one end of the extension rod (806) close to the fixed cylinder (807) is fixedly provided with a magnetic block (808), the top of the inner cavity of the fixed cylinder (807) is fixedly provided with an electromagnet (809), one end of the support frame (803) away from the locking plate (805) is fixedly provided with a battery pack (8010), the end of the plug rod (804) away from the locking rod (10) is fixedly provided with a pressure plate (8011), the outer wall of the plug rod (804) is movably sleeved with a reset spring (8012). The outer wall of the driving screw (207) is provided with external threads at both ends, and the thread directions of the two ends of the driving screw (207) are opposite, the first bevel gear (205) is engaged with the second bevel gear (208), and the clamping block (2012) is in contact with the inner wall of the balance disc pipe (701) through the inner wall of the clamping groove (2014). The outer wall of the push plate (2013) away from one end of the first moving block (209) is matched with the shape of the outer wall of the arc-shaped groove (704), and the limiting rods (2015) penetrate the first moving block (209) and the second moving block (2010) respectively.

2. The multi-stage centrifugal pump balance disk quick release structure according to claim 1, characterized in that: The outer wall of the reset spring (8012) is connected with the outer walls of the support frame (803) and the locking plate (805) respectively, and the reset spring (8012) is made of high carbon steel.

3. The multi-stage centrifugal pump balance disk quick release structure according to claim 2, characterized in that: The battery pack (8010) and the electromagnet (809) are electrically connected, the inner wall diameter of the locking groove (11) is equal to the outer wall diameter of the plug rod (804), and the outer wall diameter of the extension rod (806) is equal to the inner wall diameter of the fixed cylinder (807).

4. The multi-stage centrifugal pump balance disk quick release structure of claim 3, wherein: The two ends of the catheter (13) are communicated with the two ends of the inner cavity of the equipment shell (1), and the outer wall shape of the locking plate (805) is matched with the inner wall shape of the moving groove (802).

5. The process of the quick-release structure for the balance disc of the multi-stage centrifugal pump according to claim 4, characterized in that: The method comprises the following steps: S1: when the need to disassemble the balance coil (701), by first separating the sealed warehouse (5) and the sealing plate (6) from the outer wall of the device shell (1), then by rotating the drive column (204), under the action of the drive column (204) drive the rotation of the first bevel gear (205), because the outer wall of the first bevel gear (205) and the outer wall of the second bevel gear (208) are engaged with each other, and then realize the drive of the drive screw (207), in the process of rotation of the drive screw (207), realize the drive of the first moving block (209) and the second moving block (2010), so that the first moving block (209) and the second moving block (2010) are moved along the outer wall of the drive screw (207), and the first moving block (209) and the second moving block (2010) are moved to the outer wall of the drive screw (207) respectively; S2: in the process of moving the first moving block (209) to the outer wall of the drive screw (207), it will drive the movement of the push plate (2013), at this time, because the outer wall of the push plate (2013) abuts against the outer wall of the limiting block (703), the movement of the balance coil (701) is realized, so that the balance coil (701) is moved from the inside to the outside of the installation slot opened in the middle of the device shell (1) near the outlet pipe (14) The distance, after completely removing the contact between the outer wall of the clamping block (2012) and the inner wall of the balance coil (701), the balance coil (701) will be moved a distance under the drive of the push plate (2013), at this time, the balance coil (701) can be taken out from the installation slot opened in the middle of the device shell (1) near the outlet pipe (14); S3: when the balance plate (9) is used normally, 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 plug rod (804) is driven, so that the outer wall of the plug rod (804) is inserted into the inner cavity of the locking groove (11), which locks the locking rod (10) and the balance plate (9), so that the balance plate (9) is stably fixed in the mounting groove. S4: when the need to remove the balance plate (9), at this time the device shell (1) is in a stop state, the pressure in the device shell (1) cavity is lost, at this time under the action of reset spring (8012) still can make the outer wall of the plug rod (804) in the inner cavity of the locking groove (11), then by starting the battery pack (8010), under the action of the battery pack (8010) to electromagnet (809) power supply, make the electromagnet (809) magnetic force increases, so that under the action of electromagnet (809) adsorption magnetic block (808), under the action of magnetic adsorption, make the magnetic block (808) drive telescopic rod (806) along the inner wall of the fixed cylinder (807) upward movement, so that the outer wall of the plug rod (804) from the inner cavity of the locking groove (11) all move out, at this time can remove the fixation of the balance plate (9), so as to realize the disassembly of the balance plate (9), when the balance plate (9) is disassembled, it is not necessary to disassemble a plurality of mounting bolts.

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