Permanent magnet transmission and liquid supply pump

Abstract

This disclosure provides a permanent magnet drive device and a liquid supply pump. The permanent magnet drive device includes: a housing assembly; an input assembly including an input housing portion, an input shaft, and a copper conductor portion, wherein the input housing portion is disposed in the housing assembly, the input shaft rotatably passes through the input housing portion, and the copper conductor portion is sleeved on the input shaft, the input housing portion, the input shaft, and the copper conductor portion forming a cooling channel, and the input housing portion having a liquid inlet communicating with the cooling channel; an output assembly including an output housing portion, an output shaft, and a permanent magnet portion, wherein the output housing portion is disposed in the housing assembly, the output shaft rotatably passes through the output housing portion, and the permanent magnet portion is sleeved on the output shaft, and the permanent magnet portion and the copper conductor portion are arranged opposite to each other, with an air gap formed between the copper conductor portion and the permanent magnet portion; and an adjustment assembly connected to the permanent magnet portion for driving the permanent magnet portion to move relative to the copper conductor portion to adjust the width of the air gap; wherein the input shaft is used to connect to a drive motor, and the output shaft is used to connect to the pump body.

Description

Technical Field

[0001] This disclosure relates to the field of liquid transport technology, and in particular to a permanent magnet drive device and a liquid supply pump. Background Technology

[0002] In related technologies, liquid supply pumps often use frequency converters to regulate the speed of the drive motor, thereby controlling the pump body's speed and improving energy consumption during operation. However, due to the high cost of frequency converters and their stringent environmental requirements, they are poorly suited for high-lift liquid pumps operating under harsh conditions. Some liquid supply pumps use permanent magnet couplers for transmission between the drive motor and the pump body, aiming to regulate the pump body's speed. However, in practical applications, it has been found that when the liquid supply pump operates at high power, the speed regulation effect of the aforementioned permanent magnet couplers is poor, hindering stable control of the pump body's speed. Utility Model Content

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, a permanent magnet drive device is provided according to a first aspect of the present disclosure, comprising:

[0005] Housing components;

[0006] The input component includes an input housing, an input shaft, and a copper conductor. The input housing is disposed in the housing assembly, the input shaft rotatably passes through the input housing, and the copper conductor is sleeved on the input shaft. The input housing, the input shaft, and the copper conductor form a cooling channel, and the input housing has a liquid inlet communicating with the cooling channel.

[0007] The output assembly includes an output housing, an output shaft, and a permanent magnet. The output housing is disposed in the housing assembly, the output shaft is rotatably inserted through the output housing, the permanent magnet is sleeved on the output shaft, and the permanent magnet and the copper conductor are arranged opposite to each other, with an air gap formed between the copper conductor and the permanent magnet.

[0008] An adjustment component, connected to the permanent magnet section, is used to drive the permanent magnet section to move relative to the copper conductor section in order to adjust the width of the air gap;

[0009] The input shaft is used to connect to the drive motor, and the output shaft is used to connect to the pump body.

[0010] In one feasible implementation, the copper conductor portion includes:

[0011] The first mounting plate is sleeved on one end of the input shaft, and the first mounting plate is arranged opposite to the permanent magnet part;

[0012] A copper ring is disposed on the side of the first mounting plate facing the permanent magnet part, and an air gap is formed between the copper ring and the permanent magnet part;

[0013] An oil catcher ring is disposed on the side of the first mounting plate away from the permanent magnet part. The oil catcher ring is arranged around the input shaft, and a circumferential gap is formed between the inner peripheral wall of the oil catcher ring and the outer peripheral wall of the input shaft.

[0014] The first mounting plate and the oil catch ring are both located outside the input housing, and the input housing, the first mounting plate, the oil catch ring and the input shaft form a cooling channel.

[0015] In one feasible implementation, the first mounting plate has a drain port, and a liquid-passing gap is formed between the copper ring and the first mounting plate. The drain port is connected between the cooling channel and the liquid-passing gap.

[0016] In one feasible implementation, the minimum distance between the drain port and the axis of the input shaft along the radial direction of the input shaft is greater than the radius of the input shaft.

[0017] In one feasible implementation, the input component further includes:

[0018] The input bearing assembly includes two first angular contact ball bearings mounted face-to-face. The outer ring of the first angular contact ball bearing is disposed in the input housing portion, and the inner ring of the first angular contact ball bearing is sleeved on the input shaft.

[0019] The first cylindrical roller bearing has its outer ring disposed in the input housing portion and its inner ring sleeved on the input shaft.

[0020] Along the axial direction of the input shaft, the input bearing assembly and the first cylindrical roller bearing are arranged at intervals.

[0021] In one feasible implementation, the input shaft has a first power input end and a first power output end, a copper conductor portion is sleeved on the first power output end, and an input bearing assembly is located between the first cylindrical roller bearing and the first power input end.

[0022] In one feasible implementation, the permanent magnet drive device further includes:

[0023] The input shaft has a bearing mounting groove at one end facing the output shaft. The support bearing is set in the bearing mounting groove, the outer ring of the support bearing is fixedly connected to the input shaft, and the inner ring of the support bearing is fixedly sleeved on the output shaft.

[0024] In one feasible implementation, the permanent magnet drive device further includes:

[0025] The supporting bearings include the third cylindrical roller bearing.

[0026] In one feasible implementation, the output component further includes:

[0027] The worm gear transmission mechanism is connected between the adjustment assembly and the permanent magnet section.

[0028] A liquid supply pump is provided according to a second aspect of the present disclosure, comprising:

[0029] Pump body and drive motor;

[0030] As in any of the first aspects mentioned above, the permanent magnet drive device has an input shaft connected to a drive motor and an output shaft connected to the pump body.

[0031] The above description is merely an overview of the technical solution provided in this disclosure. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other features and effects of this disclosure more obvious and understandable, the following are specific examples of the implementation methods of this disclosure. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 This is a schematic structural diagram of a permanent magnet drive device according to an embodiment of the present disclosure;

[0034] Figure 2 A schematic structural diagram of an input component provided in one embodiment of this disclosure;

[0035] Figure 3 A schematic structural diagram of an output component provided in one embodiment of this disclosure;

[0036] Figure 4 This is a schematic connection diagram of the adjustment component and the worm gear transmission mechanism according to one embodiment of the present disclosure.

[0037] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0038] 100 Housing assembly; 200 Input assembly; 300 Output assembly; 400 Support bearing; 500 Adjustment assembly;

[0039] 110 Box body; 120 Cover body;

[0040] 210 Input housing section; 211 First input sealing cover; 212 Input bearing housing; 213 Second input sealing cover; 214 First sealing ring; 215 Input sealing ring; 216 Second sealing ring; 217 Liquid inlet pipe; 220 Input shaft; 221 First power input end; 222 First power output end; 230 Copper conductor section; 231 First mounting plate; 232 Copper ring; 233 Oil catch ring; 240 Input bearing assembly; 241 First angular contact ball bearing; 250 First cylindrical roller bearing; 260 First lock nut; 270 Input bearing cover; 280 Input bearing spacer;

[0041] 310 Output housing; 311 Worm gear cover; 312 Output bearing housing; 313 Output sealing cover; 314 Third sealing ring; 315 Output sealing ring; 320 Output shaft; 321 Second power input end; 322 Second power output end; 330 Permanent magnet section; 331 Second mounting plate; 332 Magnet cover plate; 340 Output bearing assembly; 341 Second angular contact ball bearing; 342 Second cylindrical roller bearing; 343 First ball shaft Bearing; 350 worm gear drive mechanism; 351 spline seat; 352 guide key; 353 worm wheel; 354 ​​trapezoidal threaded sleeve; 355 guide belt; 356 worm; 360 output bearing cover; 361 first bearing cover; 362 second bearing cover; 370 spacer section; 371 first inner spacer; 372 first outer spacer; 373 second inner spacer; 374 second outer spacer; 380 second lock nut; 390 third lock nut;

[0042] 520 Transition shaft; 530 Coupling; 540 Worm gear mounting bracket; 541 Mounting seat; 542 Third bearing cover; 543 Fourth bearing cover; 544 Third angular contact ball bearing; 545 Second ball bearing; 550 Fourth lock nut; 560 Fifth lock nut;

[0043] 201 Cooling channel; 202 Liquid inlet; 203 Air gap; 204 Liquid outlet; 205 Liquid passage gap. Detailed Implementation

[0044] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0045] like Figures 1 to 4As shown, a permanent magnet drive device is provided according to a first aspect of the present disclosure, comprising: a housing assembly 100; an input assembly 200, including an input housing portion 210, an input shaft 220, and a copper conductor portion 230, wherein the input housing portion 210 is disposed in the housing assembly 100, the input shaft 220 rotatably passes through the input housing portion 210, the copper conductor portion 230 is sleeved on the input shaft 220, the input housing portion 210, the input shaft 220, and the copper conductor portion 230 form a cooling channel 201, and the input housing portion 210 has a liquid inlet 202 communicating with the cooling channel 201; and an output assembly 300, including an output housing portion. 310, output shaft 320 and permanent magnet part 330, output housing part 310 is disposed in housing assembly 100, output shaft 320 is rotatably disposed in output housing part 310, permanent magnet part 330 is sleeved on output shaft 320, and permanent magnet part 330 is arranged opposite to copper conductor part 230, and an air gap 203 is formed between copper conductor part 230 and permanent magnet part 330; adjustment assembly 500 is connected to permanent magnet part 330 and is used to drive permanent magnet part 330 to move relative to copper conductor part 230 to adjust the width of air gap 203; wherein, input shaft 220 is used to connect drive motor and output shaft 320 is used to connect pump body.

[0046] The permanent magnet coupling device provided in this embodiment includes the aforementioned housing assembly 100, input assembly 200, output assembly 300, and adjustment assembly 500. The housing assembly 100 supports the input assembly 200, output assembly 300, and adjustment assembly 500, improving their installation stability and reliability, and ensuring stable operation. The input assembly 200 includes an input housing portion 210, an input shaft 220, and a copper conductor portion 230. The input shaft 220 passes through the input housing portion 210 and has… The copper conductor portion 230 is sleeved on the input shaft 220, giving it a degree of freedom of rotation relative to the input housing portion 210. Thus, the input shaft 220 can drive the copper conductor portion 230 to rotate synchronously. The output assembly 300 includes an output housing portion 310, an output shaft 320, and a permanent magnet portion 330. The output shaft 320 passes through the output housing portion 310 and has a degree of freedom of rotation relative to the output housing portion 310. The permanent magnet portion 330 is sleeved on the output shaft 320, thereby connecting the permanent magnet portion 330 and the output shaft 320. The permanent magnet part 330 and the copper conductor part 230 are arranged opposite each other, and an air gap 203 is formed between them. The adjustment component 500 can change the width of the air gap 203 by driving the permanent magnet part 330 to move relative to the copper conductor part 230. In practical applications, the input shaft 220 can be connected to the main shaft of the drive motor of the liquid supply pump, and the output shaft 320 can be connected to the main shaft of the pump body of the liquid supply pump. Thus, when the drive motor is running, it can drive the input shaft 220 and the copper conductor part 230 to rotate. Correspondingly, the copper conductor part 230 can use the magnetic coupling between it and the permanent magnet part 330 to drive the permanent magnet part 330 and the output shaft 320 to rotate, thereby transmitting the torque and speed output by the drive motor to the pump body to drive the pump body. Furthermore, the adjustment component 500 can change the transmission ratio between the copper conductor part 230 and the permanent magnet part 330 by adjusting the air gap, thereby achieving speed control of the pump body.

[0047] The aforementioned input housing 210, input shaft 220, and copper conductor 230 form a cooling channel 201, which is used for the flow of coolant. The input housing 210 has an inlet 202 that communicates with the cooling channel 201. The inlet 202 can be used to connect to a coolant supply device, so that the coolant output from the coolant supply device can be introduced into the cooling channel 201. Accordingly, the coolant entering the cooling channel 201 can come into contact with the input housing 210, input shaft 220, and copper conductor 230 to absorb the heat from the input housing 210, input shaft 220, and copper conductor 230, thereby reducing the temperature of the input housing 210, input shaft 220, and copper conductor 230. This ensures the operating temperature of the copper conductor 230 during high-power transmission of the permanent magnet drive, which is beneficial to improving the operating stability of the permanent magnet drive and providing a guarantee for the stable adjustment of the pump body speed.

[0048] It is understood that the permanent magnet drive device provided in this disclosure can be installed in a liquid supply pump or used as a component of a liquid supply pump. The aforementioned liquid supply pump may include the aforementioned drive motor and pump body. The aforementioned drive motor is used to drive the pump body to rotate, and the aforementioned pump body is used to drive liquid flow or adjust the liquid pressure when rotating. Taking the aforementioned permanent magnet drive device as a component of a liquid supply pump as an example, the aforementioned input shaft 220 can be connected to the main shaft of the aforementioned drive motor, and the aforementioned output shaft 320 can be used to connect to the main shaft of the aforementioned pump body. Thus, the permanent magnet drive device can transmit power between the drive motor and the pump body. Based on the aforementioned configuration of the permanent magnet drive device, the aforementioned drive motor and the aforementioned pump body are suitable for high-power power transmission through a permanent magnet synchronization device, so that the pump body can adapt to high-load or high-head operating conditions.

[0049] It is understood that at least a portion of the aforementioned copper conductor portion 230 is made of copper, and at least a portion of the aforementioned permanent magnet portion 330 is made of permanent magnet.

[0050] It is understood that the aforementioned coolant can be, but is not limited to, cooling oil.

[0051] It is understood that both the aforementioned copper conductor portion 230 and the aforementioned permanent magnet portion 330 are approximately rotating bodies and are arranged coaxially with the aforementioned input shaft 220 and the aforementioned output shaft 320, respectively; the aforementioned input shaft 220 and the aforementioned output shaft 320 are arranged coaxially in practical applications. Accordingly, the width of the aforementioned air gap 203 refers to the axial distance between the copper conductor portion 230 and the permanent magnet portion 330, and the adjustment assembly 500 can adjust the width of the aforementioned air gap 203 by driving the permanent magnet portion 330 to move axially along the output shaft 320.

[0052] It is understood that an installation space can be formed within the aforementioned housing assembly 100, and the aforementioned input component 200, the aforementioned output component 300, and the aforementioned adjustment component 500 are all located at least partially within the aforementioned installation space, thereby the housing assembly 100 can provide structural protection for the aforementioned input component 200, output component 300, and adjustment component 500.

[0053] like Figure 1 As shown, exemplarily, the aforementioned housing assembly 100 may include a housing portion 110 and a cover portion 120. The housing portion 110 forms an open mounting space, the opening of which is located on the side wall of the housing portion 110. The cover portion 120 is bolted to the housing portion 110 and is used to open or cover the opening of the mounting space. An input component 200 is bolted to the cover portion 120. An adjustment component 500 passes through the top wall of the housing portion 110 and is fixed by bolts. The actuator of the adjustment component 500 is located outside the housing portion 110. The output end of the adjustment component 500 is connected to a permanent magnet portion 330. The actuator drives the permanent magnet portion 330 to move through the output end. The output component 300 is bolted to the mounting wall of the housing portion 110, which is a side wall of the housing portion 110 arranged opposite to the cover portion 120. The input shaft 220 has a first power input end 221 and a first power output end 222 at its two axial ends, and the output shaft 320 has a second power input end 321 and a second power output end 322 at its two axial ends. The first power output end 222 and the second power input end 321 are both located within the installation space and are arranged opposite to each other. The first power input end 221 and the second power output end 322 are both located outside the installation space and are opposite to each other. The copper conductor portion 230 and the permanent magnet portion 330 are respectively sleeved on the first power output end 222 and the second power input end 321, and both the copper conductor portion 230 and the permanent magnet portion 330 are located within the installation space.

[0054] like Figure 2 As shown, in some examples, the copper conductor portion 230 includes: a first mounting plate 231, sleeved on one end of the input shaft 220, the first mounting plate 231 being arranged opposite to the permanent magnet portion 330; a copper ring 232, disposed on the side of the first mounting plate 231 facing the permanent magnet portion 330, with an air gap 203 formed between the copper ring 232 and the permanent magnet portion 330; and an oil catcher ring 233, disposed on the side of the first mounting plate 231 away from the permanent magnet portion 330, the oil catcher ring 233 being arranged around the input shaft 220, and a circumferential gap being formed between the inner peripheral wall of the oil catcher ring 233 and the outer peripheral wall of the input shaft 220; wherein, the first mounting plate 231 and the oil catcher ring 233 are both located outside the input housing portion 210, and the input housing portion 210, the first mounting plate 231, the oil catcher ring 233, and the input shaft 220 form a cooling channel 201.

[0055] In this technical solution, the copper conductor portion 230 may include the aforementioned first mounting plate 231, copper ring 232, and oil catcher ring 233. Based on the aforementioned configuration, the first mounting plate 231 can rotate synchronously with the aforementioned input shaft 220 and provide installation space for the aforementioned copper ring 232 and the aforementioned oil catcher ring 233, ensuring the installation stability of the copper ring 232 and the oil catcher ring 233. Correspondingly, the copper conductor portion 230 can be magnetically coupled to the aforementioned permanent magnet portion 330 through the copper ring 232, thereby transmitting power to the aforementioned permanent magnet portion 330. The oil catcher ring 233 and the aforementioned first mounting plate 231, together with the aforementioned input shaft 220 and the aforementioned input housing portion 210, can form the aforementioned cooling channel 201. Thus, when the aforementioned coolant is connected to the aforementioned inlet 202, the coolant can flow through the aforementioned cooling channel 201 through the aforementioned oil catcher ring 233 and the aforementioned first mounting plate 231 to absorb the heat of the aforementioned copper conductor portion 230, reduce the temperature of the copper conductor portion 230, and provide a guarantee for stable and reliable power transmission between the copper conductor portion 230 and the permanent magnet portion 330.

[0056] It is understandable that the aforementioned first mounting plate 231 can be fitted onto the aforementioned first power output end 222.

[0057] It is understood that the aforementioned cooling channel 201 includes the aforementioned circumferential gap, and the aforementioned input housing portion 210 and the aforementioned first mounting plate 231 respectively cover the two ends of the aforementioned circumferential gap in the axial direction of the output shaft 320.

[0058] like Figure 2 As shown, in some examples, the first mounting plate 231 has a drain port 204, and a liquid passage gap 205 is formed between the copper ring 232 and the first mounting plate 231. The drain port 204 is connected between the cooling channel 201 and the liquid passage gap 205.

[0059] In this technical solution, the aforementioned first mounting plate 231 may have the aforementioned drain port 204, and the aforementioned liquid passage gap 205 may be formed between the aforementioned copper ring 232 and the aforementioned first mounting plate 231. Based on the aforementioned arrangement, at least a portion of the coolant in the cooling channel 201 can flow into the aforementioned liquid passage gap 205 through the aforementioned drain port 204, thereby allowing the copper ring 232 to directly contact the coolant in the aforementioned liquid passage gap 205. This is beneficial for ensuring the cooling effect on the copper ring 232, and thus for targeted cooling of the high-temperature components of the copper conductor 230 during the transmission process. This is beneficial for further improving the reliability and stability of the copper conductor 230, providing a more reliable guarantee for the transmission effect of the permanent magnet drive device, and enhancing the adaptability of the permanent magnet drive device to high-power transmission conditions.

[0060] For example, the first mounting plate 231 may also be provided with a return port, the liquid passage 205 is connected between the drain port 204 and the return port, and the return port is used to connect to the coolant supply device, so that the coolant flowing out through the return port can reach the coolant supply device so as to facilitate the circulation of coolant.

[0061] like Figure 2 As shown, in some examples, the minimum distance between the drain port 204 and the axis of the input shaft 220 along the radial direction of the input shaft 220 is greater than the radius of the input shaft 220.

[0062] In this technical solution, the minimum distance between the drain port 204 and the axis of the input shaft 220 can be set to be greater than the radius of the input shaft 220 along the radial direction of the input shaft 220. Based on the aforementioned setting, on the one hand, the drain port 204 can be located relatively far from the axis of the input shaft 220, so that during the rotation of the copper conductor section 230, the coolant in the cooling channel 201 can flow to the drain port 204 under the action of centrifugal force, which is beneficial to increasing the coolant flow rate of the drain port 204, thereby ensuring the cooling effect on the copper ring 232; on the other hand, it is also beneficial to expand the distribution range of the cooling channel 201 in the radial direction of the input shaft 220, thereby increasing the contact area between the coolant and the copper conductor section 230, and improving the overall cooling effect on the copper conductor section 230.

[0063] like Figure 2 As shown, in some examples, the input assembly 200 further includes: an input bearing assembly 240, comprising two face-to-face mounted first angular contact ball bearings 241, the outer ring of the first angular contact ball bearings 241 being disposed in the input housing portion 210, and the inner ring of the first angular contact ball bearings 241 being sleeved on the input shaft 220; and a first cylindrical roller bearing 242, the outer ring of the first cylindrical roller bearing 242 being disposed in the input housing portion 210, and the inner ring of the first cylindrical roller bearing 242 being sleeved on the input shaft 220; wherein, along the axial direction of the input shaft 220, the input bearing assembly 240 and the first cylindrical roller bearings 242 are arranged at intervals.

[0064] In this technical solution, the input component 200 may further include the aforementioned input bearing assembly 240 and the first cylindrical roller bearing 242. Based on the aforementioned configuration, the input component 200 can, on the one hand, utilize the aforementioned input bearing assembly 240 to withstand the axial attraction force of the magnetic field generated by the permanent magnet section 330, reducing the risk of axial movement of the input shaft 220 and ensuring the installation and operational stability of the input shaft 220; on the other hand, the aforementioned input bearing assembly 240 and the aforementioned first cylindrical roller bearing can cooperate with each other to provide support for the input shaft 220 with a large span, which is conducive to further improving the structural reliability and stability of the input component 200 and ensuring the stable and reliable transmission of the permanent magnet drive device.

[0065] It is understandable that the two aforementioned first angular contact ball bearings 241 can abut against each other, which is beneficial to further enhance the input bearing assembly 240's ability to withstand the aforementioned magnetic field axial attraction.

[0066] like Figure 2 As shown, in some examples, the input shaft 220 has a first power input end 221 and a first power output end 222, a copper conductor portion 230 is sleeved on the first power output end 222, and an input bearing assembly 240 is located between the first cylindrical roller bearing 242 and the first power input end 221.

[0067] In this technical solution, the copper conductor portion 230 can be sleeved on the aforementioned first power output end 222, and the input bearing assembly 240 can be located between the first cylindrical roller bearing 242 and the aforementioned first power input end 221. Based on the aforementioned arrangement, the input bearing assembly 240 and the first cylindrical roller bearing 242 can be arranged close to the aforementioned first power input end 221 and the aforementioned first power output end 222, respectively, thereby increasing the axial distance between the input bearing assembly 240 and the first cylindrical roller bearing 242, improving the support span for the input shaft 220, and further enhancing the stability and reliability of the input shaft 220.

[0068] like Figure 1 and Figure 2 As shown, as an example of the aforementioned input component 200, the input component 200 may include an input housing portion 210, an input shaft 220, a copper conductor portion 230, an input bearing assembly 240, a first cylindrical roller bearing 242, a first locking nut 260, an input bearing cover 270, and an input bearing spacer 280; the input housing portion 210 may include a first input sealing cover 211, an input bearing seat 212, a second input sealing cover 213, a first sealing ring 214, an input sealing ring 215, a second sealing ring 216, and an inlet pipe 217; the copper conductor portion 230 may include a first mounting plate 231, a copper ring 232, and an oil catch ring 233; the input shaft 220 may have a first power input end 221 and a first power output end 222; the input bearing assembly 240 includes a first angular contact ball bearing 241.

[0069] The input shaft 220 is installed in the input bearing housing 212 and positioned by the input bearing assembly 240 and the first cylindrical roller bearing 242. The first cylindrical roller bearing 242 is positioned by the shoulder of the input shaft 220. The input bearing spacer 280 separates the input bearing assembly 240 from the first cylindrical roller bearing 242, forming a large-span support. The first locking nut 260 locks and fixes the input bearing assembly 240 and the first cylindrical roller bearing 242 onto the input shaft 220. The input bearing cover 270 presses and fixes the outer ring of the first angular contact ball bearing 241 of the input bearing assembly 240 into the input bearing housing 212. The first input sealing cover 211 is installed on the side of the input bearing housing 212, and a first sealing ring 214 is installed on it to form a contact seal with the input shaft 220. The input sealing ring 215 has a toothed groove on its side, which forms a non-contact labyrinth seal with the first input sealing cover 211. The second input sealing cover 213 is bolted to the side of the input bearing housing 212, so that the outer ring of the first cylindrical roller bearing 242 is pressed and fixed. Two second sealing rings 216 are installed inside the second input sealing cover 213 to form a contact seal with the input shaft 220. The liquid inlet pipe 217 is connected to the liquid inlet port 202. The coolant flows into the oil catcher ring 233 through the liquid inlet pipe 217 and the liquid inlet port 202. The oil catcher ring 233 is installed on the back of the first mounting plate 231. The first mounting plate 231 is bolted to the first power output end 222 of the input shaft 220. The copper ring 232 is bolted to the front of the first mounting plate 231. When the input shaft 220 rotates, the cooling oil can be thrown from the oil catcher ring 233 into the liquid passage gap 205 between the first mounting plate 231 and the copper ring 232 under the action of centrifugal force, and then thrown out from the return hole of the first mounting plate 231. The cooling oil circulation completes the cooling of the copper ring 232.

[0070] like Figure 1 As shown, in some examples, the permanent magnet drive also includes: a support bearing 400, a bearing mounting groove is provided at one end of the input shaft 220 facing the output shaft 320, the support bearing 400 is disposed in the bearing mounting groove, the outer ring of the support bearing 400 is fixedly connected to the input shaft 220, and the inner ring of the support bearing 400 is fixedly sleeved on the output shaft 320.

[0071] In this technical solution, the permanent magnet drive device may further include the aforementioned support bearing 400. Based on the aforementioned configuration, the input shaft 220 and the output shaft 320 can be structurally connected through the aforementioned support bearing 400, improving the radial positioning effect, thereby enhancing the structural stability of the input shaft 220 and the output shaft 320 and reducing the vibration of the permanent magnet drive device during transmission.

[0072] In some examples, the permanent magnet drive also includes a support bearing 400 comprising a third cylindrical roller bearing.

[0073] In this technical solution, the support bearing 400 may include the aforementioned third cylindrical roller bearing, which helps to reduce the rotational resistance of the support bearing 400 to the output shaft 320 and improve the transmission efficiency between the input component 200 and the output component 300.

[0074] like Figure 3 and Figure 4 As shown, in some examples, the output component 300 further includes a worm gear transmission mechanism 350, which is connected between the adjustment component 500 and the permanent magnet part 330.

[0075] In this technical solution, the output component 300 may further include the aforementioned worm gear transmission mechanism 350. Based on the aforementioned configuration, the driving force output by the adjustment component 500 can be amplified by the aforementioned worm gear transmission mechanism 350 and then transmitted to the aforementioned permanent magnet section 330, which is beneficial to improving the motion stability of the permanent magnet section 330.

[0076] It should be noted that the worm gear transmission mechanism 350 includes at least one set of meshing worm gears 353 and worm 356. Figure 3 The aforementioned worm gear is not shown in the diagram.

[0077] like Figure 3 and Figure 4 As shown, as an example of the aforementioned output component 300, the output component 300 may include an output housing portion 310, an output shaft 320, a permanent magnet portion 330, an output bearing assembly 340, a worm gear transmission mechanism 350, an output bearing cover 360, a spacer portion 370, a second locking nut 380, and a third locking nut 390; the output housing portion 310 may include a worm gear cover 311, an output bearing seat 312, an output sealing cover 313, a third sealing ring 314, and an output sealing ring 315; the output shaft 320 has a second power input end 321 and a second power output end 322; the permanent magnet... The part 330 includes a second mounting plate 331 and a magnet cover plate 332; the output bearing assembly 340 includes a second angular contact ball bearing 341, a second cylindrical roller bearing 342 and a first ball bearing 343; the worm gear transmission mechanism 350 may include a spline seat 351, a guide key 352, a worm wheel 353, a trapezoidal threaded sleeve 354, a guide belt 355 and a worm 356; the output bearing cover 360 may include a first bearing cover 361 and a second bearing cover 362; the spacer part 370 may include a first inner spacer 371, a first outer spacer 372, a second inner spacer 373 and a second outer spacer 374.

[0078] The output shaft 320 is fixed in the output bearing housing 312 by a second cylindrical roller bearing 342 and a first ball bearing 343. The second cylindrical roller bearing 342 is positioned by the left shoulder of the output shaft 320. A second outer spacer 374 and a second inner spacer 373 separate the second cylindrical roller bearing 342 and the first ball bearing 343 to form a large span and reduce the overhang ratio of the output shaft 320. A second bearing cap 362 and a third locking nut 390 lock the second cylindrical roller bearing 342 and the first ball bearing 343 onto the output shaft 320. The output sealing cap 313 is installed on the side of the output bearing housing 312, and its internal components form a contact seal with the output shaft 320. The third sealing ring 314 and the output sealing ring 315 have toothed grooves on their sides to form a non-contact labyrinth seal with the output sealing cover 313; the spline seat 351 is mounted on the output shaft 320 and slides with the output shaft 320 through the spline to transmit torque; the tail end of the spline seat 351 is equipped with a guide belt 355 to ensure the fitting accuracy between the spline seat 351 and the output shaft 320 and to reduce the vibration of the spline seat 351 and the output shaft 320 during high-speed rotation; the guide belt 355 can be made of phenolic resin or similar wear-resistant materials, which helps to reduce the frictional resistance of the guide belt 355; two second angular contact ball bearings 341 are mounted on the output shaft 320, with the first outer spacer 37 2. The inner ring is separated from the first inner spacer 371, thereby increasing the span, and is locked and fixed by the second locking nut 380. The outer ring of the second angular contact ball bearing 341 is installed on the inner side of the trapezoidal threaded sleeve 354 and is pressed and fixed by the first bearing cover 361. The outer circular surface of the trapezoidal threaded sleeve 354 is formed with a trapezoidal thread. The aforementioned trapezoidal thread forms a transmission fit with the worm gear 353, which is suitable for converting the rotational motion of the worm gear 353 into the axial motion of the trapezoidal threaded sleeve 354. The worm gear cover 311 adopts a clearance fit to axially restrict the worm gear 353 within the output bearing seat 312. The guide key 352 is used to constrain the rotation of the trapezoidal threaded sleeve 354 relative to the output shaft 320 and to... The axial movement of the trapezoidal threaded sleeve 354 is guided; the trapezoidal threaded sleeve 354 drives the spline seat 351 to move axially through the second angular contact ball bearing 341. The second mounting plate 331 is bolted to the side of the spline seat 351, so that the second mounting plate 331 can be driven by the spline seat 351 to generate axial displacement when the output shaft 320 has no axial displacement, thereby adjusting the width of the air gap 203 and realizing the speed adjustment of the permanent magnet section 330; the magnet cover plate 332 is installed on the back of the second mounting plate 331, and a permanent magnet is provided inside the second mounting plate 331. The magnet cover plate 332 is used to fix the permanent magnet so that the permanent magnet section 330 forms a magnetic field circuit. The worm 356 meshes with the worm wheel 353 and is used to rotate under the drive of the adjusting component 500, thereby the worm 356 can drive the worm wheel 353 to rotate.

[0079] like Figure 4As shown, as an example of the aforementioned adjustment assembly 500, the adjustment assembly 500 may include an actuator, a transition shaft 520, a coupling 530, a worm gear mounting bracket 540, a fourth locking nut 550, and a fifth locking nut 560; the worm gear mounting bracket 540 may include a mounting base 541, a third bearing cap 542, a fourth bearing cap 543, a third angular contact ball bearing 544, and a second ball bearing 545. The mounting base 541 is fixed to the output bearing housing 312 by bolts, and the worm gear 356 is rotatably mounted on the mounting base 541 and positioned by two third angular contact ball bearings 544 and a second ball bearing 545; the output end of the actuator is connected to the transition shaft 520, and the transition shaft 520 and the worm gear 356 are connected by a coupling 530; the inner ring of the third angular contact ball bearing 544 is locked and fixed to the worm gear 356 by the fourth locking nut 550, and the outer ring of the third angular contact ball bearing 544 is locked and fixed to the worm gear 356 by the third locking nut 560. The bearing cap 542 is pressed and fixed inside the mounting base 541; the inner ring of the second ball bearing 545 is fixed to the worm 356 by the fifth locking nut 560, and the outer ring of the second ball bearing 545 is pressed and fixed inside the mounting base 541 by the fourth bearing cap 543; based on this, the adjusting assembly 500 can axially limit the worm 356, and can drive the worm 356 to rotate by the actuator, thereby driving the worm wheel 353 and the trapezoidal threaded sleeve 354 to move, so as to realize the axial drive of the permanent magnet part 330.

[0080] It is understood that the aforementioned actuator can be, but is not limited to, an electric motor, an electric motor, or a hydraulic motor capable of outputting rotary motion.

[0081] According to a second aspect of the present disclosure, a liquid supply pump is provided, comprising: a pump body and a drive motor; a permanent magnet drive device as described in any of the first aspects above, wherein an input shaft 220 is connected to the drive motor and an output shaft 320 is connected to the pump body.

[0082] The liquid supply pump provided in this embodiment includes a drive motor, a pump body, and a permanent magnet coupling device as described in any of the first aspects above. The permanent magnet coupling device includes the aforementioned housing assembly 100, input assembly 200, output assembly 300, and adjustment assembly 500. The aforementioned housing assembly 100 can support the input assembly 200, output assembly 300, and adjustment assembly 500 to improve the installation stability and reliability of the input assembly 200, output assembly 300, and adjustment assembly 500, providing a guarantee for the stable operation of the input assembly 200, output assembly 300, and adjustment assembly 500. The input assembly 200 includes an input housing portion 210, an input shaft 220, and a copper conductor portion 230. The input shaft 220 passes through the input housing portion 210 and has… The output assembly 300 includes an output housing 310, an output shaft 320, and a permanent magnet 330. The output shaft 320 passes through the output housing 310 and has a degree of freedom of rotation relative to the output housing 310. The permanent magnet 330 is sleeved on the output shaft 320, thereby allowing the input shaft 220 to drive the copper conductor 230 to rotate synchronously. Shaft 320 can rotate synchronously. The permanent magnet part 330 and the copper conductor part 230 are arranged opposite to each other, and an air gap 203 is formed between them. The adjustment component 500 can change the width of the air gap 203 by driving the permanent magnet part 330 to move relative to the copper conductor part 230. The input shaft 220 can be connected to the main shaft of the drive motor of the liquid supply pump, and the output shaft 320 can be connected to the main shaft of the pump body of the liquid supply pump. Thus, when the drive motor is running, it can drive the input shaft 220 and the copper conductor part 230 to rotate. Correspondingly, the copper conductor part 230 can drive the permanent magnet part 330 and the output shaft 320 to rotate by using the magnetic coupling between it and the permanent magnet part 330, thereby transmitting the torque and speed output by the drive motor to the pump body to drive the pump body. Furthermore, the adjustment component 500 can change the transmission ratio between the copper conductor part 230 and the permanent magnet part 330 by adjusting the air gap, thereby controlling the speed of the pump body.

[0083] The aforementioned input housing 210, input shaft 220, and copper conductor 230 form a cooling channel 201, which is used for the flow of coolant. The input housing 210 has an inlet 202 that communicates with the cooling channel 201. The inlet 202 can be used to connect to a coolant supply device, so that the coolant output from the coolant supply device can be introduced into the cooling channel 201. Accordingly, the coolant entering the cooling channel 201 can come into contact with the input housing 210, input shaft 220, and copper conductor 230 to absorb the heat from the input housing 210, input shaft 220, and copper conductor 230, thereby reducing the temperature of the input housing 210, input shaft 220, and copper conductor 230. This ensures the operating temperature of the copper conductor 230 during high-power transmission of the permanent magnet drive, which is beneficial to improving the operating stability of the permanent magnet drive and providing a guarantee for the stable adjustment of the pump body speed.

[0084] Furthermore, since the liquid supply pump provided in this disclosure has a permanent magnet drive device as described in any of the first aspects above, it possesses all the beneficial effects of such a permanent magnet drive device, which will not be elaborated here.

[0085] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0086] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0087] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A permanent magnet transmission device, characterized in that, include: Housing components; An input component includes an input housing, an input shaft, and a copper conductor. The input housing is disposed on the housing assembly, the input shaft rotatably passes through the input housing, and the copper conductor is sleeved on the input shaft. The input housing, the input shaft, and the copper conductor form a cooling channel, and the input housing has a liquid inlet communicating with the cooling channel. The output assembly includes an output housing, an output shaft, and a permanent magnet. The output housing is disposed in the housing assembly, the output shaft is rotatably inserted through the output housing, the permanent magnet is sleeved on the output shaft, and the permanent magnet is arranged opposite to the copper conductor, with an air gap formed between the copper conductor and the permanent magnet. An adjustment component, connected to the permanent magnet section, is used to drive the permanent magnet section to move relative to the copper conductor section in order to adjust the width of the air gap; The input shaft is used to connect to the drive motor, and the output shaft is used to connect to the pump body.

2. The permanent magnet transmission device according to claim 1, characterized in that, The copper conductor portion includes: A first mounting plate is sleeved on one end of the input shaft, and the first mounting plate is arranged opposite to the permanent magnet part; A copper ring is disposed on the side of the first mounting plate facing the permanent magnet portion, and the air gap is formed between the copper ring and the permanent magnet portion; An oil catcher ring is disposed on the side of the first mounting plate opposite to the permanent magnet portion. The oil catcher ring is arranged around the input shaft, and a circumferential gap is formed between the inner peripheral wall of the oil catcher ring and the outer peripheral wall of the input shaft. The first mounting plate and the oil catch ring are both located outside the input housing portion, and the input housing portion, the first mounting plate, the oil catch ring, and the input shaft form the cooling channel.

3. The permanent magnet transmission device according to claim 2, characterized in that, The first mounting plate has a drain port, and a liquid-passing gap is formed between the copper ring and the first mounting plate. The drain port is connected between the cooling channel and the liquid-passing gap.

4. The permanent magnet transmission device according to claim 3, characterized in that, Along the radial direction of the input shaft, the minimum distance between the drain port and the axis of the input shaft is greater than the radius of the input shaft.

5. The permanent magnet transmission device according to claim 1, characterized in that, The input component also includes: The input bearing assembly includes two first angular contact ball bearings mounted face-to-face, the outer rings of the first angular contact ball bearings being disposed in the input housing portion, and the inner rings of the first angular contact ball bearings being sleeved on the input shaft; A first cylindrical roller bearing, wherein the outer ring of the first cylindrical roller bearing is disposed on the input housing portion, and the inner ring of the first cylindrical roller bearing is sleeved on the input shaft; The input bearing assembly and the first cylindrical roller bearing are arranged at intervals along the axial direction of the input shaft.

6. The permanent magnet transmission device according to claim 5, characterized in that, The input shaft has a first power input end and a first power output end, the copper conductor portion is sleeved on the first power output end, and the input bearing assembly is located between the first cylindrical roller bearing and the first power input end.

7. The permanent magnet drive device according to any one of claims 1 to 6, characterized in that, Also includes: A support bearing is provided, wherein a bearing mounting groove is provided at one end of the input shaft facing the output shaft, the support bearing is disposed in the bearing mounting groove, the outer ring of the support bearing is fixedly connected to the input shaft, and the inner ring of the support bearing is fixedly sleeved on the output shaft.

8. The permanent magnet transmission device according to claim 7, characterized in that, Also includes: The supporting bearing includes a third cylindrical roller bearing.

9. The permanent magnet transmission device according to claim 8, characterized in that, The output component also includes: The worm gear transmission mechanism is connected between the adjustment assembly and the permanent magnet section.

10. A liquid supply pump, characterized in that, include: Pump body and drive motor; According to any one of claims 1 to 9, the permanent magnet drive device has the input shaft connected to the drive motor and the output shaft connected to the pump body.

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