Constant power magnetic gear pump with automatic speed reduction

Abstract

The utility model discloses a constant -power magnetic gear pump of automatic speed reduction, especially relates to magnetic gear pump technical field, including motor body and apron, the output of motor body is connected with motor shaft through the shaft coupling, the outside of motor shaft is closely provided with outer rotor seat, and the outside of outer rotor seat is further provided with inner magnetic drive, the outside of inner magnetic drive is again provided with the protective cover of firm and durable, the upside of protective cover is provided with through -hole, and the one side of protective cover inserts the shielded cover, the shielded cover passes through through -hole and extends to the inside of protective cover, the upside swing joint of apron has the cylindrical pin, the outside swing sleeve of cylindrical pin has the driving gear, the driving gear and driven gear are mutually engaged, and the stable power output is helpful to guarantee the conveying accuracy and stability of pump, satisfies the production scene demand of higher process requirement, has higher practical value and market prospect.

Description

Technical Field

[0001] This utility model relates to the field of magnetic gear pump technology, and more specifically, to a constant power magnetic gear pump with automatic speed reduction. Background Technology

[0002] Magnetic gear pumps are a type of pump that uses the principle of magnetic coupling to achieve contactless power transmission. They have advantages such as no leakage and stable operation, and are widely used in industries such as chemical, pharmaceutical, and food processing.

[0003] A search revealed that patent publication number CN221957809U discloses a magnetic pump with a cooling function, including a base plate. A motor is bolted to the top of the base plate, and a pump body is bolted to the left side of the motor. L-shaped plates are bolted to both the front and rear sides of the top of the base plate. Through the cooperation of an air intake pipe, an air intake fan, a cooler, a connecting pipe, and an air blowing hood, it has the advantage of cooling the magnetic pump. When the magnetic pump is running, the air intake fan rotates, drawing in the hot air generated in the pump body through the air intake pipe, allowing the hot air to be quickly expelled from the pump body. The drawn-out hot air enters the cooling shell, where the cooler cools it down. Through the cooperation of a first rotating rod, a first rotary cutter, a second rotary cutter, a second rotating rod, a protective shell, a first bevel gear, and a second bevel gear, it has the advantage of preventing the magnetic pump from clogging. The inventors discovered the following problems with the existing technology during the development of this utility model:

[0004] When faced with load changes, magnetic gear pumps have the problem of not being able to automatically reduce speed to maintain constant power output. When the load suddenly increases, the magnetic gear pump cannot automatically adjust the speed in time, causing the output power to exceed the normal range. This not only puts excessive load on the motor, increasing the risk of motor damage and shortening the motor's service life, but also prevents the pump from automatically increasing the speed to maintain constant power when the load decreases, resulting in energy waste. Automatic speed limiting constant power gear pumps can avoid many overload operation shutdowns or burnouts, and in severe cases, even stop the entire work site or burn out the pump, causing damage to the entire working environment.

[0005] Therefore, a constant power magnetic gear pump with automatic speed reduction is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a constant power magnetic gear pump with automatic speed reduction to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a constant power magnetic gear pump with automatic speed reduction, comprising a motor body and a cover plate. The output end of the motor body is connected to a motor shaft via a coupling. An outer rotor seat is tightly fitted on the outer side of the motor shaft. An inner magnetic drive is further fitted on the outer side of the outer rotor seat. A robust and durable protective cover is fitted on the outer side of the inner magnetic drive. A through hole is opened on the upper side of the protective cover. A shield is inserted into one side of the protective cover. The shield passes through the through hole and extends into the interior of the protective cover. A cylindrical pin is movably connected to the upper side of the cover plate. A driving gear is movably fitted on the outer side of the cylindrical pin. The driving gear meshes with a driven gear. A rotating shaft is inserted into the interior of the driven gear. To prevent the cylindrical pin from falling off, a cap is also installed on the outer side of the cylindrical pin. The cap fits tightly with the cylindrical pin.

[0008] Preferably, a bushing is fitted on the outer side of the motor shaft, the inner diameter of the bushing matches the outer diameter of the motor shaft, and the bushing is installed in the internal space of the outer rotor seat.

[0009] Preferably, the shield is disposed on the outside of the inner magnetic drive, the shape of the shield is adapted to the outer contour of the inner magnetic drive, and an extension plate is welded to one end of the shield, the extension plate being tightly fitted to one side of the protective cover.

[0010] Preferably, the extension plate has a mounting base fixedly installed by welding on the side near the motor body. The motor body and the mounting base have corresponding threaded holes at the lateral overlapping positions. A matching hexagon socket head cap screw is screwed into the threaded hole on one side of the motor body.

[0011] Preferably, a threaded interface for installing a cover plate is reserved on one side of the protective cover. The edge of the cover plate is provided with an external thread that matches the threaded interface. By rotating clockwise, the cover plate is threadedly installed on one side of the protective cover. A sealing ring is fitted on the side of the cover plate near the protective cover. The size of the sealing ring is in close contact with the contact surface of the cover plate and the protective cover.

[0012] Preferably, the end of the extension plate connected to the mounting base away from the mounting base is fitted with a front cover by a plurality of fastening bolts, and a space is reserved inside the front cover for placing a cap, the size of which matches the cap.

[0013] Preferably, the bottom of the protective cover is provided with a mounting bracket by a snap fastener, and shock-absorbing pads are detachably installed at the four corners of the bottom of the mounting bracket. The shock-absorbing pads are connected to the mounting bracket by threaded fasteners.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] Compared with existing technologies, this automatic speed-reducing constant power magnetic gear pump, by setting up a speed detection device, a power detection device and a controller, can automatically reduce the motor speed when the load suddenly increases and the motor output power exceeds the preset value, so as to avoid motor overload damage and thus improve the operational stability of the magnetic gear pump.

[0016] Compared with existing technologies, this automatic speed-reducing constant power magnetic gear pump avoids power waste caused by the motor's constant speed when the load changes by maintaining a constant power output, thus reducing energy consumption and meeting the requirements of energy conservation and emission reduction. It adopts a programmable logic controller (PLC) as the controller, which can automatically adjust the motor speed according to a preset algorithm, realizing intelligent control, reducing manual intervention, improving production efficiency, and ensuring the pump's delivery accuracy and stability by providing stable power output. It meets the needs of production scenarios with high process requirements and has high practical value and market promotion prospects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 4 This is a schematic diagram of the motor body structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the gear structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Motor body; 2. Motor shaft; 3. Outer rotor seat; 4. Inner magnetic drive; 5. Protective cover; 6. Shielding cover; 7. Extension plate; 8. Mounting base; 9. Cover plate; 10. Sealing ring; 11. Cylindrical pin; 12. Drive gear; 13. Driven gear; 14. Cap; 15. Front end cover; 16. Mounting bracket; 17. Shock-absorbing pad; 18. Socket head cap screw; 19. Bushing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] As attached Figures 1 to 5 The automatic speed reduction constant power magnetic gear pump shown includes a motor body 1 and a cover plate 9. The output end of the motor body 1 is connected to the motor shaft 2 via a coupling. An outer rotor seat 3 is tightly fitted on the outside of the motor shaft 2. An inner magnetic drive 4 is further fitted on the outside of the outer rotor seat 3. A sturdy and durable protective cover 5 is fitted on the outside of the inner magnetic drive 4. A through hole is opened on the upper side of the protective cover 5. A shield 6 is inserted into one side of the protective cover 5. The shield 6 passes through the through hole and extends into the interior of the protective cover 5. A cylindrical pin 11 is movably connected to the upper side of the cover plate 9. A driving gear 12 is movably fitted on the outside of the cylindrical pin 11. The driving gear 12 meshes with the driven gear 13. A rotating shaft is inserted into the interior of the driven gear 13. To prevent the cylindrical pin 11 from falling off, a cap 14 is also installed on the outside of the cylindrical pin 11. The cap 14 fits tightly with the cylindrical pin 11.

[0026] The motor body 1 is connected to the motor shaft 2 via a coupling. An outer rotor seat 3, an inner magnetic drive 4, and a robust protective cover 5 are sequentially and tightly fitted on the outside. This layered structure not only ensures tight connection and stable operation of the components, but also effectively protects the internal components, reduces the impact of the external environment on motor operation, and extends the motor's service life. Secondly, a through hole is opened on the upper side of the protective cover 5, through which a shielding cover 6 extends into the interior, effectively shielding against external interference and ensuring stable motor operation. Finally, the upper side of the cover plate 9 is movably connected to the driving gear 12 via a cylindrical pin 11, which meshes with the driven gear 13 to achieve power transmission. A tightly fitted cap 14 is installed on the outer side of the cylindrical pin 11 to prevent it from falling off, ensuring the stability of the gear transmission structure, reducing malfunctions, improving the reliability and stability of the entire motor device, and ensuring the motor operates normally and efficiently.

[0027] Example 2

[0028] Based on Embodiment 1, the solution in Embodiment 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 5 As shown below, see details:

[0029] In a preferred embodiment, a bushing 19 is fitted on the outer side of the motor shaft 2. The bushing 19 is made of high-strength, wear-resistant high-quality material. The inner diameter of the bushing 19 matches the outer diameter of the motor shaft 2 to ensure a tight fit and smooth rotation. The bushing 19 is installed in the internal space of the outer rotor seat 3. It not only protects the motor shaft 2 and reduces wear, but also helps the outer rotor seat 3 to achieve more stable operation, effectively disperses the stress transmitted from the motor shaft 2, and improves the service life and reliability of the entire transmission structure.

[0030] In a preferred embodiment, the shielding cover 6 is disposed on the outside of the inner magnetic drive 4. The shape of the shielding cover 6 is adapted to the outer contour of the inner magnetic drive 4, which can provide electromagnetic shielding protection for the inner magnetic drive 4 in all directions. An extension plate 7 is welded to one end of the shielding cover 6. The extension plate 7 is flat and has good fit. The extension plate 7 is tightly fitted to one side of the protective cover 5, which further enhances the overall sealing and structural stability and effectively prevents external interference from intruding.

[0031] In a preferred embodiment, the extension plate 7 is fixedly mounted with a mounting base 8 by welding on the side near the motor body 1. The mounting base 8 has a flat surface and sufficient structural strength. The motor body 1 and the mounting base 8 have corresponding threaded holes at the lateral overlapping positions. A matching hexagon head screw 18 is screwed into the threaded hole on one side of the motor body 1. The hexagon head screw 18 fits tightly with the threaded hole, firmly fixing the mounting base 8 and the motor body 1, effectively preventing relative displacement between the two.

[0032] In a preferred embodiment, a threaded interface for installing a cover plate 9 is reserved on one side of the protective cover 5. The edge of the cover plate 9 is provided with an external thread that matches the threaded interface. By rotating clockwise, the cover plate 9 is threadedly installed on one side of the protective cover 5. A sealing ring 10 is fitted on the side of the cover plate 9 close to the protective cover 5. The sealing ring 10 is made of high-quality elastic material. The size of the sealing ring 10 is in close contact with the contact surface of the cover plate 9 and the protective cover 5. When the cover plate 9 is installed in place, the sealing ring 10 is effectively compressed to form a reliable seal, preventing dust, moisture and other impurities from entering the interior of the protective cover 5.

[0033] In a preferred embodiment, the end of the extension plate 7 connected away from the mounting base 8 is fitted with a front cover 15 by multiple fastening bolts. The bolts are evenly distributed to ensure that the front cover 15 is subjected to uniform force and is firmly installed. The front cover 15 is made of high-strength metal material and is finely processed with a smooth and flat surface. A position is reserved inside the front cover 1 for placing the cap 14. The size of this position matches the cap 14, which can not only ensure that the cap 14 is installed smoothly, but also limit its shaking, so that it remains stable during equipment operation and plays its due protective and positioning role.

[0034] In a preferred embodiment, the bottom of the protective cover 5 is provided with a mounting bracket 16 via a snap fastener. The mounting bracket 16 is made of high-strength alloy material, has a robust structure, and can effectively support the protective cover 5 and its internal components. Shock-absorbing pads 17 are detachably installed at the four corners of the bottom of the mounting bracket 16. The shock-absorbing pads 17 are made of elastic rubber and have good shock absorption and buffering performance. The shock-absorbing pads 17 are connected to the mounting bracket 16 by threaded fasteners, which not only ensures a secure installation but also effectively absorbs vibrations during equipment operation, reduces noise, and improves the stability of equipment operation.

[0035] As a preferred embodiment, the above is described.

[0036] The working process of this utility model is as follows: In use, firstly, the output end of the motor body 1 is connected to the motor shaft 2 through a coupling. The bushing 19 is tightly fitted on the outside of the motor shaft 2, and it is ensured that the bushing 19 is installed inside the outer rotor seat 3. The outer rotor seat 3 is then fitted on the outside of the motor shaft 2, the inner magnetic drive 4 is fitted on the outside of the outer rotor seat 3, and finally the protective cover 5 is fitted on the outside of the inner magnetic drive 4. Next, the shielding cover 6 is inserted into the through hole on one side of the protective cover 5 and extends into the inside, ensuring that the shielding cover 6 matches the outer contour of the inner magnetic drive 4, and the extension plate 7 welded to one end of it fits tightly with the protective cover 5. Corresponding threaded holes are opened at the positions where the motor body 1 and the mounting seat 8 overlap laterally. The mounting seat 8 is fixed to the motor body 1 by screwing in the threaded holes with an appropriate size hexagon socket head cap screw 18.

[0037] At the threaded interface reserved on one side of the protective cover 5, the cover plate 9 with the sealing ring 10 is threaded onto one side of the protective cover 5 by rotating clockwise, ensuring that the sealing ring 10 is tightly fitted to the contact surface of the cover plate 9 and the protective cover 5. At the end of the extension plate 7 away from the mounting base 8, the front cover 15 is installed by multiple fastening bolts, ensuring that the reserved position size inside the front cover 15 matches the cap 14, so that the cap 14 can be placed later. A cylindrical pin 11 is movably connected to the upper side of the cover plate 9, and a drive gear 12 is movably sleeved on the outside of the cylindrical pin 11.

[0038] The driven gear 13 meshes with the driving gear 12, and the rotating shaft is inserted into the driven gear 13.

[0039] A cap 14 is installed on the outside of the cylindrical pin 11 to ensure a tight fit between the cap 14 and the cylindrical pin 11, preventing the cylindrical pin 11 from falling off. A mounting bracket 16 is installed at the bottom of the protective cover 5 via a snap fastener. Shock-absorbing pads 17 are detachably installed at the four corners of the bottom of the mounting bracket 16. The shock-absorbing pads 17 are connected to the mounting bracket 16 via threaded fasteners. The motor body 1 is started, and the motor shaft 2 is rotated through the coupling, which in turn drives the outer rotor seat 3, the inner magnetic drive 4, and the gears inside the pump body to rotate, thereby realizing the liquid delivery. During the operation of the equipment, the output power of the motor body 1 and the speed of the motor shaft 2 are monitored to ensure that the equipment operates stably in the constant power mode with automatic speed reduction. When the gear pump is overloaded, it can automatically detect and evaluate, and then maintain a reasonable operating power to prevent shutdown or burnout.

Claims

1. A constant power magnetic gear pump with automatic speed reduction, comprising a motor body (1) and a cover plate (9), characterized in that: The output end of the motor body (1) is connected to the motor shaft (2) via a coupling. An outer rotor seat (3) is tightly fitted on the outside of the motor shaft (2). An inner magnetic drive (4) is further fitted on the outside of the outer rotor seat (3). A sturdy and durable protective cover (5) is fitted on the outside of the inner magnetic drive (4). A through hole is opened on the upper side of the protective cover (5). A shield (6) is inserted into one side of the protective cover (5). The shield (6) passes through the through hole and extends to the protective cover. Inside the cover (5), a cylindrical pin (11) is movably connected to the upper side of the cover plate (9). A drive gear (12) is movably sleeved on the outer side of the cylindrical pin (11). The drive gear (12) meshes with the driven gear (13). A rotating shaft is inserted inside the driven gear (13). To prevent the cylindrical pin (11) from falling off, a cap (14) is also installed on the outer side of the cylindrical pin (11). The cap (14) fits tightly with the cylindrical pin (11).

2. The constant power magnetic gear pump with automatic speed reduction according to claim 1, characterized in that: A bushing (19) is fitted on the outer side of the motor shaft (2). The inner diameter of the bushing (19) matches the outer diameter of the motor shaft (2), and the bushing (19) is installed in the internal space of the outer rotor seat (3).

3. The constant power magnetic gear pump with automatic speed reduction according to claim 2, characterized in that: The shield (6) is disposed on the outside of the inner magnetic drive (4). The shape of the shield (6) is adapted to the outer contour of the inner magnetic drive (4). An extension plate (7) is welded to one end of the shield (6). The extension plate (7) is tightly fitted to one side of the protective cover (5).

4. The constant power magnetic gear pump with automatic speed reduction according to claim 3, characterized in that: The extension plate (7) has a mounting base (8) fixedly installed on the side near the motor body (1) by welding. The motor body (1) and the mounting base (8) have corresponding threaded holes at the lateral overlapping position. A matching hexagon socket head cap screw (18) is screwed into the threaded hole on one side of the motor body (1).

5. The constant power magnetic gear pump with automatic speed reduction according to claim 4, characterized in that: The protective cover (5) has a threaded interface reserved on one side for installing the cover plate (9). The edge of the cover plate (9) is provided with an external thread that matches the threaded interface. By rotating clockwise, the cover plate (9) is threadedly installed on one side of the protective cover (5). A sealing ring (10) is fitted on the side of the cover plate (9) close to the protective cover (5). The size of the sealing ring (10) is in close contact with the contact surface of the cover plate (9) and the protective cover (5).

6. The constant power magnetic gear pump with automatic speed reduction according to claim 4, characterized in that: The end of the extension plate (7) connected away from the mounting base (8) is fitted with a front cover (15) by a plurality of fastening bolts. A position for placing a cap (14) is reserved inside the front cover (15), and the size of the position matches that of the cap (14).

7. The constant power magnetic gear pump with automatic speed reduction according to claim 4, characterized in that: The bottom of the protective cover (5) is provided with a mounting bracket (16) by a snap fastener. Shock-absorbing pads (17) are detachably installed at the four corners of the bottom of the mounting bracket (16). The shock-absorbing pads (17) are connected to the mounting bracket (16) by threaded fasteners.

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