Permanent magnet motor with frequency converter for a pump

Abstract

The application discloses a pump permanent magnet motor with a frequency converter, which comprises a bottom plate and a first vertical plate, the middle of the top of the bottom plate is welded with the first vertical plate, and a connecting device is installed at the opening of the inside of the first vertical plate. The pump permanent magnet motor with the frequency converter can quickly fix the frequency converter and the permanent magnet motor through the cooperation between the permanent magnet motor, the first bolt and the second bolt, the frequency converter can be fixed with the permanent magnet motor through the first rectangular block and the first bolt, the permanent magnet motor and the frequency converter can be blocked through the opening of the first vertical plate, the frequency converter and the permanent magnet motor are more stable, the handle can drive the threaded rod to rotate through the cooperation between the threaded rod, the third arc-shaped block, the sliding block and the vertical rod, the threaded rod drives the vertical rod to move through the second connecting rod, the vertical rod drives the second arc-shaped baffle to rotate through the sliding block, the second arc-shaped baffle is fixed with the first arc-shaped baffle through the blocking block, and the permanent magnet motor is tightly fixed through the first arc-shaped baffle.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically to a permanent magnet motor for pumps with a frequency converter. Background Technology

[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. In circuit diagrams, it is represented by the letter M (D in older standards). Its main function is to generate driving torque, serving as a power source for electrical appliances or various machines. A generator, represented by the letter G, converts mechanical energy into electrical energy. A permanent magnet DC motor also consists of stator poles, a rotor, brushes, and a housing. The stator poles use permanent magnets (permanent steel), made of materials such as ferrite, AlNiCo, and NdFeB. Based on their structural form, they can be divided into cylindrical and block-type types. Most motors used in VCRs and VCRs use cylindrical magnets, while motors used in power tools and automotive electrical appliances mostly use block-type magnets. The rotor is generally made of stacked silicon steel sheets and has fewer slots than that of an electromagnetic DC motor. Low-power motors used in VCRs and VCRs mostly have 3 slots, while higher-end models have 5 or 7 slots. The enameled wire is wound between two slots of the rotor core (three slots mean three windings), and each joint is soldered to the metal plates of the commutator. The brushes are conductive components connecting the power supply to the rotor windings, possessing both conductivity and wear resistance. Permanent magnet motors use single-element metal plates, metal-graphite brushes, or electrographite brushes. Permanent magnet DC motors used in VCRs employ electronic speed control circuits or centrifugal speed control devices.

[0003] However, existing frequency converters are inconvenient to connect with permanent magnet motors, and installation and disassembly are relatively troublesome. At the same time, the stability of existing permanent magnet motors is also relatively low. Summary of the Invention

[0004] The purpose of this invention is to provide a permanent magnet motor for pumps with a frequency converter, so as to solve the problem mentioned in the background art that the frequency converter in the prior art is inconvenient to connect with the permanent magnet motor, and the installation and disassembly are relatively troublesome.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A permanent magnet motor for a pump with a frequency converter includes a base plate and a first vertical plate. The first vertical plate is welded to the middle of the upper part of the base plate. An opening is machined in the middle of the interior of the first vertical plate. A connecting device is installed at the opening of the interior of the first vertical plate.

[0006] The connecting device includes a permanent magnet motor, a frequency converter, a first rectangular block, a first bolt, a second bolt, and a mesh plate;

[0007] The permanent magnet motor is located at the opening of the first vertical plate. The outer wall of the permanent magnet motor is clearance-fitted with the inner wall of the opening of the first vertical plate. A frequency converter is installed on the front end face of the permanent magnet motor. The outer wall of the frequency converter is clearance-fitted with the inner wall of the opening of the first vertical plate. Multiple first rectangular blocks are provided above and below the front end face of the permanent magnet motor. The inner sides of the upper and lower first rectangular blocks are welded to the outer wall of the frequency converter. The first rectangular blocks are threadedly connected to the permanent magnet motor by first bolts. A mesh plate is provided on the left side of the frequency converter. The right outer wall of the mesh plate is attached to the left outer wall of the permanent magnet motor. The mesh plate is threadedly connected to the permanent magnet motor by multiple second bolts.

[0008] Preferably, a second rectangular block is fixed to both the upper and lower outer walls of the mesh plate, and a first arc-shaped block is welded to the outer side of the second rectangular block.

[0009] Preferably, the width of the mesh plate is greater than the width of the permanent magnet motor, so that the mesh plate can block the permanent magnet motor.

[0010] Preferably, an adjustment device is installed on the left outer wall of the first vertical plate;

[0011] The adjusting device includes a concave plate, a cylinder, a second arc-shaped block, a spring, a first connecting rod, and a third arc-shaped block;

[0012] The right sides of the upper and lower concave plates are welded to the first vertical plate. A cylinder is rotatably connected to the groove of the concave plate via a rotating shaft. A second arc-shaped block is fixed to the left side of the cylinder, and the second arc-shaped block is rotatably connected to the outer wall of the mesh plate via a rotating shaft. A spring is provided on the outer side of the upper and lower cylinders. A first connecting rod is fixed to both ends of the spring. The first connecting rod on the left side is rotatably connected to the first arc-shaped block via a rotating shaft. The first connecting rod on the right side is rotatably connected to a third arc-shaped block via a rotating shaft, and the outer wall of the third arc-shaped block is welded to the first vertical plate.

[0013] Preferably, the upper and lower concave plates are symmetrically distributed with the midpoint of the mesh plate as the center, which can improve the stability of the mesh plate.

[0014] Preferably, a clamping device is installed on the right side of the first vertical plate;

[0015] The clamping device includes a second vertical plate, a second connecting rod, a first arc-shaped baffle, a stop block, a second arc-shaped baffle, a third arc-shaped block, a slider, and a vertical rod;

[0016] The left side of the second vertical plate is fixedly connected to the first vertical plate. A second connecting rod is welded to the outer right side of the second vertical plate. The right side of the second connecting rod is rotatably connected to a first arc-shaped baffle via a rotating shaft. The left side of the first arc-shaped baffle is tightly fitted to the outer wall of the permanent magnet motor. A stop block is fixedly connected to the middle of the left side of the first arc-shaped baffle. A second arc-shaped baffle is installed in the groove of the stop block. The outer right side of the second arc-shaped baffle is clearance-fitted to the inner wall of the groove of the stop block. A third arc-shaped block is rotatably connected to the left side of the second arc-shaped baffle via a rotating shaft. The left side of the third arc-shaped block is fixedly connected to the second vertical plate. A slider is slidably engaged in the groove of the second arc-shaped baffle. A vertical rod is fixedly connected to the rear end face of the slider.

[0017] Preferably, a threaded rod is rotatably connected to the inner and outer sides of the vertical rod, and the threaded rod is connected to the internal thread of the second connecting rod. A handle is fixed to the outer side of the threaded rod, so that the threaded rod can be rotated by the handle.

[0018] Preferably, the second vertical plate and the second connecting rod are arranged perpendicularly, which makes the second connecting rod on the right side of the second vertical plate more stable.

[0019] Compared with the prior art, the beneficial effects of the present invention are: the permanent magnet motor for pumps with frequency converter, through the mutual cooperation between the permanent magnet motor, frequency converter, first rectangular block, first bolt and second bolt and other structures, the frequency converter can be quickly fixed to the permanent magnet motor through the first rectangular block and the first bolt, and at the same time, the opening of the first vertical plate can block the permanent magnet motor and the frequency converter, making the frequency converter and the permanent magnet motor more stable;

[0020] Through the cooperation between structures such as the mesh plate, concave plate, cylinder, and second arc block, the cylinder can drive the mesh plate to move through the second arc block, thereby adjusting the position of the mesh plate;

[0021] Through the cooperation between the second rectangular block, the first arc block, the spring, the first connecting rod, and the third arc block, when the mesh plate moves, the mesh plate can drive the first arc block to move through the second rectangular block, and the first arc block can drive the first connecting rod to move. Thus, the first connecting rod can cause the spring to undergo elastic deformation, and the elasticity of the spring can make the mesh plate move more stably.

[0022] Through the cooperation of the threaded rod, the second vertical plate, the second connecting rod, the first arc-shaped baffle, the stop block, the second arc-shaped baffle, the third arc-shaped block, the slider, and the vertical rod, the threaded rod can be rotated by the handle. The threaded rod drives the vertical rod to move through the second connecting rod. The vertical rod drives the second arc-shaped baffle to rotate through the slider. The second arc-shaped baffle fixes the first arc-shaped baffle through the stop block, thereby pressing and fixing the permanent magnet motor against the baffle through the first arc-shaped baffle. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 for Figure 1 Sectional view in;

[0025] Figure 3 for Figure 2 A structural schematic diagram of the first bolt, the first rectangular block, and the frequency converter.

[0026] Figure 4 for Figure 2 A structural schematic diagram of the first arc-shaped block, the first connecting rod, and the concave plate.

[0027] Figure 5 for Figure 2 A schematic diagram of the structure at the second connecting rod, the first arc-shaped baffle, and the stop block;

[0028] Figure 6 for Figure 2 A schematic diagram of the structure of the handle, threaded rod, and slider.

[0029] In the diagram: 1. Base plate, 2. First vertical plate, 3. Connecting device, 301. Permanent magnet motor, 302. Frequency converter, 303. First rectangular block, 304. First bolt, 305. Second bolt, 306. Mesh plate, 4. Adjusting device, 401. Concave plate, 402. Cylinder, 403. Second arc-shaped block, 404. Spring, 405. First connecting rod, 406. Third arc-shaped block, 5. Pressing device, 501. Second vertical plate, 502. Second connecting rod, 503. First arc-shaped baffle, 504. Stop block, 505. Second arc-shaped baffle, 506. Third arc-shaped block, 507. Slider, 508. Vertical rod, 6. Second rectangular block, 7. First arc-shaped block, 8. Threaded rod, 9. Handle. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-6This invention provides a technical solution: a permanent magnet motor for a pump with a frequency converter includes a base plate 1 and a first vertical plate 2. The first vertical plate 2 is welded to the upper center of the base plate 1. An opening is machined in the center of the first vertical plate 2. A connecting device 3 is installed at the opening of the first vertical plate 2. The connecting device 3 includes a permanent magnet motor 301, a frequency converter 302, a first rectangular block 303, a first bolt 304, a second bolt 305, and a mesh plate 306. The permanent magnet motor 301 is located at the opening of the first vertical plate 2. The outer wall of the permanent magnet motor 301 is clearance-fitted with the inner wall of the opening of the first vertical plate 2. The model of the permanent magnet motor 301 is 110BYG350D. The frequency converter 302 is installed on the front end face of the permanent magnet motor 301. The frequency converter 302 is manufactured by the same manufacturer as the permanent magnet motor 301, so it will not be described in detail. The outer wall of the frequency converter 302 is clearance-fitted with the inner wall of the opening of the first vertical plate 2. The inner wall of the opening of plate 2 is fitted with a clearance. Two first rectangular blocks 303 are provided on the upper and lower front surfaces of the permanent magnet motor 301. The inner sides of the upper and lower first rectangular blocks 303 are welded to the outer wall of the frequency converter 302. The first rectangular blocks 303 are threadedly connected to the permanent magnet motor 301 by first bolts 304. The frequency converter 302 and the permanent magnet motor 301 can be fixed by the first rectangular blocks 303 and the first bolts 304. A mesh plate 306 is provided on the left side of the frequency converter 302, and the right outer wall of the mesh plate 306 is in contact with the left outer wall of the permanent magnet motor 301. The mesh plate 306 is threadedly connected to the permanent magnet motor 301 by two second bolts 305. Second rectangular blocks 6 are fixed to the upper and lower outer walls of the mesh plate 306, and a first arc-shaped block 7 is welded to the outer side of the second rectangular blocks 6. The width of the mesh plate 306 is larger than the width of the permanent magnet motor 301.

[0032] Through the cooperation between the permanent magnet motor, frequency converter, first rectangular block, first bolt and second bolt, the frequency converter can be quickly fixed to the permanent magnet motor by the first rectangular block and the first bolt. At the same time, the opening of the first vertical plate can block the permanent magnet motor and frequency converter, making the frequency converter and permanent magnet motor more stable.

[0033] An adjustment device 4 is installed on the left outer wall of the first vertical plate 2. The adjustment device 4 includes a concave plate 401, a cylinder 402, a second arc-shaped block 403, a spring 404, a first connecting rod 405, and a third arc-shaped block 406. The right sides of the upper and lower concave plates 401 are welded to the first vertical plate 2. The cylinder 402 is rotatably connected to the groove of the concave plate 401 via a rotating shaft. The cylinder 402 is of model SC. The second arc-shaped block 403 is fixed to the left side of the cylinder 402, and the second arc-shaped block 403 is connected to the outer side of the mesh plate 306 via a rotating shaft. The cylinder 402 is rotatably connected to the wall, and can drive the mesh plate 306 to move through the second arc block 403. The outer side of the upper and lower cylinders 402 is provided with springs 404, and the two ends of the springs 404 are fixedly connected to the first connecting rods 405. The left first connecting rod 405 is rotatably connected to the first arc block 7 through a rotating shaft, and the right first connecting rod 405 is rotatably connected to the third arc block 406 through a rotating shaft. The outer wall of the third arc block 406 is welded to the first vertical plate 2. The upper and lower concave plates 401 are symmetrically distributed with the midpoint of the mesh plate 306 as the center.

[0034] Through the cooperation of structures such as the mesh plate, concave plate, cylinder, and second arc block, the cylinder can drive the mesh plate to move through the second arc block, thereby adjusting the position of the mesh plate.

[0035] A clamping device 5 is installed on the right side of the first vertical plate 2. The clamping device 5 includes a second vertical plate 501, a second connecting rod 502, a first arc-shaped baffle 503, a stop block 504, a second arc-shaped baffle 505, a third arc-shaped block 506, a slider 507, and a vertical rod 508. The left side of the upper and lower second vertical plates 501 is fixedly connected to the first vertical plate 2. The second connecting rod 502 is welded to the outer wall of the right side of the second vertical plate 501. The right side of the second connecting rod 502 is rotatably connected to the first arc-shaped baffle 503 via a rotating shaft. The left side of the first arc-shaped baffle 503 is tightly fitted to the outer wall of the permanent magnet motor 301. The permanent magnet motor 301 can be clamped and fixed by the first arc-shaped baffle 503. A stop block 504 is fixedly connected to the middle of the left side of the first arc-shaped baffle 503. A groove is machined on the outer side of the stop block 504. The second arc-shaped baffle 505 is installed in the groove of the stop block 503. The right outer wall of the second arc-shaped baffle 505 is connected to the stop block 504. The inner wall of the groove of 03 is fitted with a clearance. The position of the stop block 503 can be fixed by the second arc-shaped baffle 505. The second arc-shaped baffle 505 has a sliding groove. The left side of the second arc-shaped baffle 505 is rotatably connected to the third arc-shaped block 506 via a rotating shaft. The left side of the third arc-shaped block 506 is fixedly connected to the second vertical plate 501. The sliding groove of the second arc-shaped baffle 505 is slidably engaged with the slider 507. The rear end face of the slider 507 is fixedly connected to the vertical rod 508. The vertical rod 508 can drive the second arc-shaped baffle 505 to rotate through the slider 507. The inner and outer sides of the vertical rod 508 are rotatably connected to the threaded rod 8. The threaded rod 8 can drive the vertical rod 508 to move. The threaded rod 8 is connected to the inner thread of the second connecting rod 502. The threaded rod 8 can move through the second connecting rod 502. The outer side of the threaded rod 8 is fixedly connected to the handle 9. The second vertical plate 501 and the second connecting rod 502 are set vertically.

[0036] Through the cooperation between the second rectangular block, the first arc block, the spring, the first connecting rod, and the third arc block, when the mesh plate moves, the mesh plate can drive the first arc block to move through the second rectangular block, and the first arc block can drive the first connecting rod to move. Thus, the first connecting rod can cause the spring to undergo elastic deformation, and the elasticity of the spring can make the mesh plate move more stably.

[0037] Through the cooperation of the threaded rod, the second vertical plate, the second connecting rod, the first arc-shaped baffle, the stop block, the second arc-shaped baffle, the third arc-shaped block, the slider, and the vertical rod, the threaded rod can be rotated by the handle. The threaded rod drives the vertical rod to move through the second connecting rod. The vertical rod drives the second arc-shaped baffle to rotate through the slider. The second arc-shaped baffle fixes the first arc-shaped baffle through the stop block, thereby pressing and fixing the permanent magnet motor against the baffle through the first arc-shaped baffle.

[0038] In this embodiment, when the operator needs to use the permanent magnet motor for the pump with a frequency converter, the operator first connects the external power supply to the cylinder 402 and starts the cylinder 402, causing the cylinder 402 to extend. The cylinder 402, through the second arc-shaped block 403, can drive the mesh plate 306 to move to the left. The mesh plate 306, through the second rectangular block 6, drives the first arc-shaped block 7 to move. The first arc-shaped block 7, through the first connecting rod 405, can cause the spring 404 to undergo elastic deformation. Therefore, the elastic force of the spring 404 can make the mesh plate 306 move more stably. A bolt 304 and a first rectangular block 303 can fix the frequency converter 302 to the permanent magnet motor 301. Rotate the first arc-shaped baffle 503 outward to move the permanent magnet motor 301 and the frequency converter 302 to the opening of the first vertical plate 2, and make the left side of the permanent magnet motor 301 fit with the mesh plate 306. Fix the permanent magnet motor 301 to the mesh plate 306 with the second bolt 305. Then loosen the first arc-shaped baffle 503 so that the left side of the first arc-shaped baffle 503 fits with the permanent magnet motor 301. Then rotate the handle 9 to make the handle 9 drive the threaded rod 8 to rotate. The threaded rod 8 can drive the vertical rod 508 to move through the second connecting rod 502, so that the vertical rod 508 drives the second arc-shaped baffle 505 to rotate through the slider 507, and the right side of the second arc-shaped baffle 505 enters the groove of the stop block 504. Thus, the second arc-shaped baffle 505 can fix the first arc-shaped baffle 503 through the stop block 504, thereby making the permanent magnet motor 301 more stable.

[0039] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] 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 permanent magnet motor for a pump with a frequency converter, comprising a base plate and a first vertical plate, wherein the first vertical plate is welded to the upper center of the base plate, and an opening is machined in the center of the interior of the first vertical plate, characterized in that: A connecting device is installed at the internal opening of the first vertical plate; The connecting device includes a permanent magnet motor, a frequency converter, a first rectangular block, a first bolt, a second bolt, and a mesh plate; The permanent magnet motor is located at the opening of the first vertical plate. The outer wall of the permanent magnet motor is clearance-fitted with the inner wall of the opening of the first vertical plate. A frequency converter is mounted on the front end face of the permanent magnet motor. The outer wall of the frequency converter is clearance-fitted with the inner wall of the opening of the first vertical plate. Multiple first rectangular blocks are provided above and below the front end face of the permanent magnet motor. The inner sides of the upper and lower first rectangular blocks are welded to the outer wall of the frequency converter. The first rectangular blocks are threadedly connected to the permanent magnet motor by first bolts. A mesh plate is provided on the left side of the frequency converter, and the right outer wall of the mesh plate is attached to the left outer wall of the permanent magnet motor. The mesh plate is threadedly connected to the permanent magnet motor by multiple second bolts. An adjustment device is installed on the left outer wall of the first vertical plate; The adjusting device includes a concave plate, a cylinder, a second arc-shaped block, a spring, a first connecting rod, and a third arc-shaped block; The right sides of the upper and lower concave plates are welded to the first vertical plate. A cylinder is rotatably connected to the groove of each concave plate via a rotating shaft. A second arc-shaped block is fixed to the left side of each cylinder, and this second arc-shaped block is rotatably connected to the outer wall of the mesh plate via a rotating shaft. Springs are provided on the outer sides of the upper and lower cylinders. First connecting rods are fixed to both ends of each spring. The left first connecting rod is rotatably connected to the first arc-shaped block via a rotating shaft, and the right first connecting rod is rotatably connected to a third arc-shaped block via a rotating shaft. The outer wall of the third arc-shaped block is welded to the first vertical plate. A clamping device is installed on the right side of the first vertical plate; The clamping device includes a second vertical plate, a second connecting rod, a first arc-shaped baffle, a stop block, a second arc-shaped baffle, a third arc-shaped block, a slider, and a vertical rod; The left side of the second vertical plate is fixedly connected to the first vertical plate. A second connecting rod is welded to the outer right side of the second vertical plate. The right side of the second connecting rod is rotatably connected to a first arc-shaped baffle via a rotating shaft. The left side of the first arc-shaped baffle is tightly fitted to the outer wall of the permanent magnet motor. A stop block is fixedly connected to the middle of the left side of the first arc-shaped baffle. A second arc-shaped baffle is installed in the groove of the stop block. The outer right side of the second arc-shaped baffle is clearance-fitted to the inner wall of the groove of the stop block. A third arc-shaped block is rotatably connected to the left side of the second arc-shaped baffle via a rotating shaft. The left side of the third arc-shaped block is fixedly connected to the second vertical plate. A slider is slidably engaged in the groove of the second arc-shaped baffle. A vertical rod is fixedly connected to the rear end face of the slider.

2. A permanent magnet motor for pumps with a frequency converter according to claim 1, characterized in that: The upper and lower outer walls of the mesh plate are both fixed with second rectangular blocks, and the outer side of the second rectangular blocks is welded with a first arc-shaped block.

3. A permanent magnet motor for pumps with a frequency converter according to claim 1, characterized in that: The width of the mesh plate is greater than the width of the permanent magnet motor.

4. A permanent magnet motor for pumps with a frequency converter according to claim 1, characterized in that: The concave plates mentioned above and below are symmetrically distributed with the midpoint of the mesh plate as the center.

5. A permanent magnet motor for pumps with a frequency converter according to claim 1, characterized in that: The vertical rod is rotatably connected to a threaded rod on its inner and outer sides, and the threaded rod is connected to the internal thread of the second connecting rod. A handle is fixedly attached to the outer side of the threaded rod.

6. A permanent magnet motor for pumps with a frequency converter according to claim 1, characterized in that: The second vertical plate is perpendicular to the second connecting rod.

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