A self-priming pump coupler that is easy to disassemble

Abstract

The present invention belongs to the field of pump couplers and discloses a self-priming pump coupler that is easy to disassemble; including a copper rotor and a permanent magnet rotor, the copper rotor is connected to the first pump shaft, the permanent magnet rotor is connected to the second pump shaft, the first pump shaft is connected to the third pump shaft; the second pump shaft is connected to the fourth pump shaft; the third pump shaft is inserted in the fifth pump shaft, the fourth pump shaft is inserted in the sixth pump shaft, the fifth pump shaft and the third pump shaft are provided with a first through hole, the sixth pump shaft and the second pump shaft are provided with a second through hole; the first through hole and the second through hole are penetrated by a connecting rod, one end of the connecting rod is connected to a barb structure, and the other end is connected to a limited block, the other end of the fifth pump shaft is connected to the driving motor of the self-priming pump, and the other end of the sixth pump shaft is connected to the impeller of the self-priming pump. The present invention has a simple structure, can be soft-started, is easy to disassemble, and can be widely used in the field of self-priming pumps.

Description

Technical Field

[0001] The invention relates to the technical field of pump couplers, in particular to a self-priming pump coupler which is easy to disassemble. Background Art

[0002] A coupling is a connection device that connects two shafts or a shaft and a rotating part, rotates together during the transmission of motion and power, and does not disengage under normal circumstances. Sometimes it is also used as a safety device to prevent the connected parts from being subjected to excessive loads, playing the role of overload protection. A coupling is usually composed of two halves, which are connected by keys or tight fits, fastened to the two ends of the shaft, and then connected in some way.

[0003] The magnetic coupling is also called magnetic coupling and permanent magnet transmission device. It is mainly composed of copper rotor and permanent magnet rotor. Generally, the copper rotor is connected to the motor shaft, and the permanent magnet rotor is connected to the shaft of the working machine. There is an air gap (called air gap) between the copper rotor and the permanent magnet rotor, and there is no mechanical connection to transmit torque. The magnetic coupling is a non-rigid connector with good soft start function, simple structure and obvious vibration reduction effect.

[0004] During the maintenance and disassembly process of the self-priming pump, the driving motor and the pump body often need to be disassembled. In the prior art, the driving motor and the pump body of the self-priming pump are generally connected by a coupling. During the connection process, the screws on the coupling need to be tightened by a special tool. Therefore, when disassembling, the tightened screws need to be loosened with a special tool. However, in reality, the coupling is usually subjected to a large torque during operation, which makes it easy for the screws on the coupling to slip and be difficult to unscrew. In addition, the number of screws on the coupling in the prior art is generally large, and the installation and disassembly process is cumbersome, time-consuming and labor-intensive. In addition, the coupling connection method is a rigid connection, and there is no buffering force between the driving motor and the impeller, which is not convenient for starting the driving motor and transmitting torque. In view of the great advantages of the magnetic coupling, how to provide a flexible connection and easy-to-disassemble self-priming pump coupling is a technical problem that technicians in this field need to solve. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a self-priming pump coupler with a flexible connection and easy to disassemble.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A self-priming pump coupler that is easy to disassemble is designed, comprising a copper rotor and a permanent magnet rotor connected to the copper rotor, the copper rotor is connected to one end of a first pump shaft, the permanent magnet rotor is connected to one end of a second pump shaft, the other end of the first pump shaft is connected to a third pump shaft; the other end of the second pump shaft is connected to a fourth pump shaft; the third pump shaft and the fourth pump shaft have the same structure, and their cross-sections are both cross-shaped; the third pump shaft is inserted in a groove of a fifth pump shaft, the fourth pump shaft is inserted in a groove of a sixth pump shaft, and a first buffer sleeve is provided between the third pump shaft and the fifth pump shaft, and the fourth pump shaft is connected to the sixth pump shaft. A second buffer sleeve is provided between the pump shafts, the groove depth of the fifth pump shaft is longer than the length of the third pump shaft, and the groove depth of the sixth pump shaft is longer than the length of the fourth pump shaft; the fifth pump shaft, the first buffer sleeve and the third pump shaft are each provided with two rows of first through holes, and the sixth pump shaft, the second buffer sleeve and the second pump shaft are each provided with two rows of second through holes; a connecting rod passes through the first through hole and the second through hole, one end of the connecting rod is connected to a barb structure, and the other end is connected to a limit block of a C-shaped structure, the other end of the fifth pump shaft is connected to a driving motor of the self-priming pump, and the other end of the sixth pump shaft is connected to an impeller of the self-priming pump.

[0008] Preferably, the connecting rod, barb structure and limit block are integrally formed to form a connecting piece, which can conveniently connect the third pump shaft with the fifth pump shaft, and the fourth pump shaft with the sixth pump shaft.

[0009] Preferably, there are a plurality of the first through holes and the second through holes, which are evenly arranged. The set first through holes and the second through holes can conveniently adjust the connection position of the third pump shaft and the fifth pump shaft, and the fourth pump shaft and the sixth pump shaft, thereby conveniently adjusting the air gap between the copper rotor and the permanent magnet rotor.

[0010] Preferably, the first pump shaft, the second pump shaft, the fifth pump shaft and the sixth pump shaft are all cylindrical structures, which are convenient for connection with bearings, rotors and impellers of drive motors.

[0011] The self-priming pump coupler that is easy to disassemble proposed by the present invention has the following beneficial effects:

[0012] (1) The device of the present invention is provided with a first buffer sleeve between the third pump shaft and the fifth pump shaft, and a second buffer sleeve between the fourth pump shaft and the sixth pump shaft. The first buffer sleeve effectively avoids the rigid connection between the third pump shaft and the fifth pump shaft, and the second buffer sleeve effectively avoids the rigid connection between the fourth pump shaft and the sixth pump shaft. The pump shaft can be effectively avoided from being damaged when the drive motor is started quickly. At the same time, the copper rotor and the permanent magnet rotor transmit torque through magnetic force, which achieves the purpose of soft starting. When the drive motor is just started, the speed is slow, the magnetic field effect of the copper rotor and the permanent magnet rotor is not obvious, and the resistance of the permanent magnet rotor is also small. At this time, the load force on the drive motor is small, which is convenient for quick starting;

[0013] (2) The third pump shaft and the fifth pump shaft of the device of the present invention are connected by a connecting rod, and the fourth pump shaft and the sixth pump shaft are also connected by a connecting rod. When disassembling, it is only necessary to apply an outward force to the limit block, and the connecting rod and the barb structure will slide out of the first through hole or the second through hole, and then the third pump shaft will continue to be inserted into the groove of the fifth pump shaft, and the fourth pump shaft will continue to be inserted into the groove of the sixth pump shaft. The gap between the copper rotor and the permanent magnet rotor will be increased, so the entire coupler can be quickly disassembled by first pulling out the copper rotor, the first pump shaft and the third pump shaft as a whole, and then pulling out the permanent magnet rotor, the second pump shaft and the fourth pump shaft as a whole. The device of the present invention is easy to install and disassemble, and there is no screw for rigid connection. There will be no slipping of threads or other situations that are not conducive to disassembly during the disassembly process;

[0014] (3) The device of the present invention is easy to install and disassemble. At the same time, the magnetic coupler composed of the copper rotor and the permanent magnet rotor transmits torque, which is convenient for the rapid start of the drive motor and avoids the damage of the pump shaft to the rigid connection. Moreover, since there is a gap between the copper rotor and the permanent magnet rotor, the vibration of the drive motor will not be transmitted to the impeller, which improves the stability of the impeller operation and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0016] Figure 1 It is a structural schematic diagram of the device of the present invention;

[0017] Figure 2 It is a schematic diagram of the discrete structure of the device of the present invention;

[0018] Figure 3 It is a schematic diagram of the connection structure of the connecting rod, the barb structure and the limit block in the device of the present invention;

[0019] Figure 4 It is a schematic diagram of the connection structure of the connecting rod, the barb structure and the limit block with the third pump shaft, the fifth pump shaft and the first buffer sleeve in the device of the present invention.

[0020] In the figure: copper rotor 1, permanent magnet rotor 2, first pump shaft 3, second pump shaft 4, third pump shaft 5, fourth pump shaft 6, fifth pump shaft 7, sixth pump shaft 8, first buffer sleeve 9, second buffer sleeve 10, first through hole 11, second through hole 12, connecting rod 13, barb structure 14, limit block 15. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 protection scope of the present invention.

[0022] See attached Figure 1 -Attached Figure 4 As shown, a self-priming pump coupler that is easy to disassemble of the present invention includes a copper rotor 1 and a permanent magnet rotor 2 that is connected to the copper rotor 1, the copper rotor 1 is connected to one end of a first pump shaft 3, the permanent magnet rotor 2 is connected to one end of a second pump shaft 4, the other end of the first pump shaft 3 is connected to a third pump shaft 5; the other end of the second pump shaft 4 is connected to a fourth pump shaft 6; the third pump shaft 5 and the fourth pump shaft 6 have the same structure, and their cross-sections are both cross-shaped; the third pump shaft 5 is inserted in the groove of the fifth pump shaft 7, the fourth pump shaft 6 is inserted in the groove of the sixth pump shaft 8, and a first buffer sleeve 9 is provided between the third pump shaft 5 and the fifth pump shaft 7, a second buffer sleeve 10 is provided between the fourth pump shaft 6 and the sixth pump shaft 8, the depth of the groove of the fifth pump shaft 7 is longer than the length of the third pump shaft 5, and the groove of the sixth pump shaft 8 The depth is longer than the length of the fourth pump shaft 6, and the first pump shaft 3, the second pump shaft 4, the fifth pump shaft 7 and the sixth pump shaft 8 are all cylindrical structures; the fifth pump shaft 7, the first buffer sleeve 9 and the third pump shaft 5 are each provided with two rows of first through holes 11, and the sixth pump shaft 8, the second buffer sleeve 10 and the second pump shaft 4 are each provided with two rows of second through holes 12, and each row of the first through holes 11 and the second through holes 12 is provided with five, and are evenly arranged; a connecting rod 13 passes through the first through hole 11 and the second through hole 12, one end of the connecting rod 13 is connected to a barb structure 14, and the other end is connected to a limit block 15 of a C-shaped structure, and the connecting rod 13, the barb structure 14 and the limit block 15 are integrally formed; the other end of the fifth pump shaft 7 is connected to the driving motor of the self-priming pump, and the other end of the sixth pump shaft 8 is connected to the impeller of the self-priming pump.

[0023] Working principle: the fifth pump shaft 7 of the device proposed in the embodiment of the present invention is connected to the driving motor of the self-priming pump. Before working, the first buffer sleeve 9 is sleeved on the third pump shaft 5, and the third pump shaft 5 sleeved with the first buffer sleeve 9 is inserted into the fifth pump shaft 7, and then the connecting rod 13 is sequentially passed through the fifth pump shaft 7, the first buffer sleeve 9 and the first through hole 11 on the third pump shaft 5, the barb structure 14 at one end of the connecting rod 13 and the limit block 15 at the other end are clamped on the surface of the fifth pump shaft 7, and the third pump shaft 5 and the fifth pump shaft 7 are fixed; at the same time, the embodiment of the present invention The sixth pump shaft 8 of the proposed device is connected to the impeller of the self-priming pump. Before work, the second buffer sleeve 10 is sleeved on the fourth pump shaft 6, and the fourth pump shaft 6 with the second buffer sleeve 10 is inserted into the sixth pump shaft 8, and then the connecting rod 13 is passed through the sixth pump shaft 8, the second buffer sleeve 10 and the second through hole 12 on the fourth pump shaft 6 in turn, and the barb structure 14 at one end of the connecting rod 13 and the limit block 15 at the other end are stuck on the surface of the sixth pump shaft 8 to fix the fourth pump shaft 6 and the sixth pump shaft 8; at this time, the copper rotor 1 and the permanent magnet rotor 2 are close together.During operation, the driving motor of the self-priming pump is turned on, and the rotor of the driving motor drives the fifth pump shaft 7, the third pump shaft 5, the first pump shaft 3 and the copper rotor 1 to rotate in turn. The permanent magnet rotor 2 arranged in conjunction with the copper rotor 1 will generate eddy currents on the permanent magnet rotor 2 during the process of the copper rotor cutting the magnetic lines of force. The eddy currents in turn generate an induced magnetic field around the permanent magnet rotor 2, preventing the relative movement of the permanent magnet rotor 2 and the copper rotor 1, thereby realizing the torque transmission between the copper rotor 1 and the permanent magnet rotor 2; after the permanent magnet rotor 2 rotates, it drives the second pump shaft 4, the fourth pump shaft 6 and the sixth pump shaft 8 to rotate in turn, and the sixth pump shaft 8 drives the impeller of the self-priming pump to rotate, thereby achieving the beneficial effect of the driving motor driving the impeller to rotate; the device of the present invention is provided with a first buffer sleeve 9 between the third pump shaft 5 and the fifth pump shaft 7, and a second buffer sleeve 10 between the fourth pump shaft 6 and the sixth pump shaft 8. The first buffer sleeve 9 effectively avoids the rigid connection between the third pump shaft 5 and the fifth pump shaft 7, and the second buffer sleeve 10 effectively avoids the rigid connection between the fourth pump shaft 6 and the sixth pump shaft 8, and starts quickly. The damage of the pump shaft can be effectively avoided. At the same time, the copper rotor 1 and the permanent magnet rotor 2 transmit torque through magnetic force, which achieves the purpose of soft starting. When the drive motor is just started, the speed is slow, the magnetic field effect of the copper rotor 1 and the permanent magnet rotor 2 is not obvious, and the resistance of the permanent magnet rotor 2 is also small. At this time, the load force on the drive motor is small, which is convenient for quick starting; finally, the third pump shaft 5 and the fifth pump shaft 7 of the device proposed in the embodiment of the present invention are connected by a connecting rod 13, and the fourth pump shaft 6 and the sixth pump shaft 8 are also connected by a connecting rod 13. When disassembling, only To apply outward force to the limit block 15, the connecting rod 13 and the barb structure 14 will slide out from the first through hole 11 or the second through hole 12, and then the third pump shaft 5 will continue to be inserted into the groove of the fifth pump shaft 7, and the fourth pump shaft 6 will continue to be inserted into the groove of the sixth pump shaft 8. The gap between the copper rotor 1 and the permanent magnet rotor 2 will be increased, so the entire coupler can be quickly disassembled by first pulling out the copper rotor 1, the first pump shaft 3 and the third pump shaft 5 as a whole, or first pulling out the permanent magnet rotor 2, the second pump shaft 4 and the fourth pump shaft 6 as a whole.

[0024] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A self-priming pump coupler that is easy to disassemble, characterized in that: The invention comprises a copper rotor (1) and a permanent magnet rotor (2) connected to the copper rotor (1); the copper rotor (1) is connected to one end of a first pump shaft (3); the permanent magnet rotor (2) is connected to one end of a second pump shaft (4); the other end of the first pump shaft (3) is connected to a third pump shaft (5); the other end of the second pump shaft (4) is connected to a fourth pump shaft (6); the third pump shaft (5) and the fourth pump shaft (6) have the same structure, and their cross-sections are both cross-shaped; the third pump shaft (5) is inserted into a groove of a fifth pump shaft (7); the fourth pump shaft (6) is inserted into a groove of a sixth pump shaft (8); a first buffer sleeve (9) is provided between the third pump shaft (5) and the fifth pump shaft (7); and a second buffer sleeve (10) is provided between the fourth pump shaft (6) and the sixth pump shaft (8). 10), the depth of the groove of the fifth pump shaft (7) is longer than the length of the third pump shaft (5), and the depth of the groove of the sixth pump shaft (8) is longer than the length of the fourth pump shaft (6); the fifth pump shaft (7), the first buffer sleeve (9) and the third pump shaft (5) are each provided with two rows of first through holes (11), and the sixth pump shaft (8), the second buffer sleeve (10) and the second pump shaft (4) are each provided with two rows of second through holes (12); a connecting rod (13) passes through the first through hole (11) and the second through hole (12), one end of the connecting rod (13) is connected to a barb structure (14), and the other end is connected to a limit block (15) of a C-shaped structure, the other end of the fifth pump shaft (7) is connected to a driving motor of a self-priming pump, and the other end of the sixth pump shaft (8) is connected to an impeller of the self-priming pump; The connecting rod (13), the barb structure (14) and the limit block (15) are integrally formed; The first pump shaft (3), the second pump shaft (4), the fifth pump shaft (7) and the sixth pump shaft (8) are all cylindrical structures.

2. The self-priming pump coupler that is easy to disassemble according to claim 1 is characterized in that: A plurality of the first through holes (11) and the second through holes (12) are provided and are evenly arranged.

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