Motor mounting structure and deep-well pump

Abstract

The utility model relates to deep well pump technical field, concretely relates to a motor mounting structure and deep well pump, the motor mounting structure includes bearing seat, support cover and connecting seat, wherein, bearing seat sets up in motor casing, at least one first bearing is equipped on bearing seat, first bearing is connected in the non -driven end of motor's pivot, support cover sets up in the back of bearing seat, connecting seat is connected in motor casing, and the bearing seat is limited through support cover. The utility model provides a motor mounting structure, and the bearing seat is limited through support cover, can prevent the situation that loosening displacement appears when working, guarantees the stability of work.

Description

Technical Field

[0001] This utility model relates to the field of deep well pump technology, specifically to a motor mounting structure and a deep well pump. Background Technology

[0002] A deep well pump is a water pump specifically designed to extract water from deep wells or boreholes. It can be inserted into deep wells with a very small diameter to lift groundwater to the surface for domestic use, agricultural irrigation, or industrial applications.

[0003] A deep well pump consists of a motor, a pump body, and a controller. The controller controls the motor to drive the pump body. When the pump body is working, it pumps water from the rear to the front through its internal impeller. The water flow exerts an axial thrust on the impeller towards the rear inlet, and this thrust is transmitted to the motor shaft. The rear end of this shaft, away from the pump body, is mounted to a bearing housing via a bearing. Although this bearing housing is generally tightly fitted inside the motor housing, the thrust can still cause the bearing housing to loosen, and may even damage the bearing on it. Utility Model Content

[0004] This invention addresses the technical problem in existing deep well pumps where axial force during operation can lead to instability and loosening of the motor mounting structure. It proposes a motor mounting structure that uses a support sleeve to limit the bearing seat, preventing loosening and displacement during operation and ensuring operational stability.

[0005] The technical solution of this utility model: A motor mounting structure, comprising: A bearing housing is disposed inside the motor housing, and at least one first bearing is provided on the bearing housing, the first bearing being connected to the non-driving end of the motor shaft; A support sleeve is disposed on the rear side of the bearing housing; A connecting seat is attached to the motor housing and the bearing seat is limited by the support sleeve.

[0006] Furthermore, the bearing housing is provided with an angular contact bearing, which is capable of bearing axial forces toward the rear end.

[0007] Furthermore, the bearing housing is also equipped with a deep groove ball bearing.

[0008] Furthermore, a bearing cavity is formed on the bearing housing, and the first bearing is disposed in the bearing cavity; the rotating shaft is provided with a first shoulder that abuts against the inner ring of the first bearing.

[0009] Furthermore, the motor mounting structure also includes a mounting base connected to the front side of the motor housing. The mounting base has a mounting cavity, and at least one second bearing is provided in the mounting cavity. The second bearing is connected to the drive end of the rotating shaft. A wave washer is provided between the outer ring of the foremost second bearing and the limiting protrusion in the mounting cavity. The rotating shaft has a second shoulder that abuts against the inner ring of the second bearing.

[0010] Furthermore, the bearing housing is also provided with several wire passage holes.

[0011] Another aspect of this utility model is to provide a deep well pump, including the motor mounting structure as described in any one of the above.

[0012] Furthermore, the deep well pump also includes a controller housing, the first end of the connecting seat is sealed and detachably connected to the motor housing, and the second end of the connecting seat is sealed and detachably connected to the controller housing; the connecting seat seals and isolates the motor housing and the controller housing, and a conductive insert is also sealed and passed through the middle of the connecting seat, the first end of the conductive insert is used for electrical connection with the motor, and the second end of the conductive insert is used for electrical connection with the controller; The connector is provided with a through hole for the conductive insert to pass through; the deep well pump also includes an insulating pressure plate and a rubber sleeve, the conductive insert is integrally formed on the insulating pressure plate, the rubber sleeve includes a pressing edge and an intermediate sleeve body, the intermediate sleeve body is located in the through hole and surrounds the conductive insert, and the insulating pressure plate is installed on the connector and presses the pressing edge. The connecting seat also has a mounting groove for accommodating the pressing edge, and the insulating pressure plate has a corresponding protruding pressing block for pressing the pressing edge.

[0013] Furthermore, oil is filled inside the motor housing, and glue is filled inside the controller housing to fix the controller; A through mounting protrusion is formed inside the connecting seat. An oil cup is held in the mounting protrusion by a snap ring. The oil cup includes an elastic bladder and a pressure sleeve located inside the elastic bladder. The pressure sleeve has a through hole. The outer wall of the elastic bladder has a side groove, and the inner wall of the mounting protrusion has a corresponding side protrusion. A sealing plug is also fitted inside the mounting ring between the oil cup and the controller housing; the connecting seat is also provided with an inlet / outlet hole, which is used to directly connect the space between the sealing plug and the oil cup to the outside of the connecting seat.

[0014] Furthermore, the mounting protrusion is located in the middle of the connecting seat, and the outer periphery of the mounting protrusion is also provided with a mounting edge, on which the through hole is provided; the through hole is one or multiple holes are distributed circumferentially; The insulating pressure plate is located between the motor housing and the connecting seat, and the mounting edge is set close to the motor housing.

[0015] After adopting the above technical solution, the motor mounting structure and deep well pump provided by this utility model have the following beneficial effects compared with the prior art: After the connecting seat of this utility model is installed with the motor housing, the bearing seat is limited by the support sleeve on the rear side, which can prevent the bearing seat from loosening and shifting under the reaction force of water flow, thereby ensuring the stable and reliable operation of the motor. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the motor mounting structure in Embodiment 1; Figure 2 This is a perspective view of the motor mounting structure in Example 1; Figure 3 This is an exploded view of the motor mounting structure in Example 1; Figure 4 This is a schematic diagram of the bearing housing in Embodiment 1 from a first-view perspective; Figure 5 This is a schematic diagram of the bearing housing in Embodiment 1 from a second perspective; Figure 6 This is a schematic diagram of the mounting base in Embodiment 1; Figure 7 This is a cross-sectional view of the deep well pump in Example 2; Figure 8 This is a perspective view of the deep well pump in Example 2; Figure 9 This is a schematic diagram of the connector of Embodiment 2 from a first-view perspective; Figure 10 This is an exploded view of the connector in Embodiment 2 from a first-view perspective; Figure 11 This is a schematic diagram of the connector of Embodiment 2 from a second perspective; Figure 12 This is an exploded view of the connector of Embodiment 2 from a second perspective; Figure 13 for Figure 7 Enlarged view of point I in the image; Figure 14 This is a schematic diagram of the controller housing and heat sink in Embodiment 2; Figure 15 This is a schematic diagram of the installation structure of the heat sink in Embodiment 2; Figure 16 This is a perspective view of the controller housing in Embodiment 2.

[0017] in, Bearing housing 1, bearing cavity 11, first bearing 12, angular contact bearing 121, deep groove ball bearing 122, wire hole 13; Support sleeve 2; Shaft 31, first shoulder 311, second shoulder 312, rotor 32, stator 33; Mounting base 4, mechanical seal 41, mounting cavity 42, second bearing 43, wave washer 44, limiting protrusion ring 45, first detection hole 46; Motor housing 5, first connecting through hole 51; Connector 6, conductive insert 61, insulating pressure plate 611, protruding pressure block 6111; rubber sleeve 62, pressing edge 621, intermediate sleeve 622; mounting edge 63, through hole 631, mounting groove 632; mounting protruding ring 64, lateral protrusion 641, axial rib 642; oil cup 65, elastic bladder 651, lateral groove 6511, pressure sleeve 652, through hole 6521, snap ring 653, inlet / outlet hole 654; sealing plug 66; first sealing ring 671, first threaded blind hole 672; second sealing ring 681, second threaded blind hole 682; second detection hole 69; Controller housing 7, second connecting through hole 71; Heat sink 8, mounting hole 81, tightening bolt 82, lock nut 83; Base 9, clamping plate 91, wiring channel 92. Detailed Implementation

[0018] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0021] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0022] Example 1:

[0023] like Figure 1-6 As shown, this embodiment provides a motor mounting structure for use in deep well pumps. The motor mounting structure includes a bearing housing 1, a support sleeve 2, and a connecting seat 6. The bearing housing 1 is disposed within a motor housing 5, preferably installed in the motor housing 5 via a tight fit. A bearing cavity 11 is formed on the bearing housing 1, and at least one first bearing 12 is disposed within the bearing cavity 11. In this embodiment, two first bearings 12 are preferably provided to improve stability. The first bearings 12 are connected to the non-driving end of the shaft 31 on the rotor 32 of the motor. Figure 1 The lower part is preferably mounted on the motor shaft 31 by a tight fit.

[0024] Furthermore, the support sleeve 2 and the connecting seat 6 are sequentially arranged on the rear side of the bearing seat 1. Figure 1 The lower middle side. The connecting seat 6 is connected to the motor housing 5, and the bearing seat 1 is limited by the support sleeve 2.

[0025] The front end of the rotating shaft 31 is Figure 1The upper middle end forms the drive end, used to drive the pump body (not shown in the figure) and other actuators of the deep well pump to rotate. When the pump body is working, it pumps water from back to front. The water flow exerts a rearward reaction force on the impeller in the pump body. This reaction force acts on the first bearing 12 and bearing seat 1 through the motor shaft 31. After the connecting seat 6 is fixedly installed with the motor housing 5 in this embodiment, the bearing seat 1 is limited on the rear side by the support sleeve 2, which can prevent the bearing seat 1 from loosening and shifting under the reaction force, thereby ensuring the stable and reliable operation of the motor. In addition, the support sleeve 2 can be selected or processed according to the actual space and distance between the bearing seat 1 and the connecting seat 6 to prevent the situation where the connecting seat 6 cannot be guaranteed to hold the bearing seat 1 after installation when directly using the connecting seat 6 to tighten it. The support sleeve 2 can also be made of high-strength material, such as steel ring, to improve strength, especially when its wall thickness is thin.

[0026] Furthermore, the first bearing 12 on the bearing housing 1 includes an angular contact bearing 121. The wider side of the outer ring of the angular contact bearing 121 faces the support sleeve 2 and can be used to bear axial force towards the rear end. The rotating shaft 31 is provided with a first shoulder 311 that abuts against the inner ring of the first bearing 12, and the bearing cavity 11 supports the outer ring of the first bearing 12. When the reaction force is applied to the first bearing 12 through the first shoulder 311 on the rotating shaft 31, the angular contact bearing 121 can withstand a greater axial force. Preferably, the two first bearings 12 in this embodiment are an angular contact bearing 121 and a deep groove ball bearing 122, and more preferably, the angular contact bearing 121 is disposed on... Figure 1 The deep groove ball bearing 122 is located below the connecting seat 6 and is positioned above the connecting seat 6 for easy disassembly and assembly.

[0027] like Figure 6 As shown, the motor mounting structure of this embodiment also includes a mounting base 4, which is connected to the front side of the motor housing 5. The motor shaft 31 extends through the mounting base 4 to the outside and can be connected to an actuator such as a pump body. Mechanical seals 41, including a rotating ring and a stationary ring, are respectively provided on the inner and outer sides of the mounting base 4 on the shaft 31, enabling sealing when the motor shaft 31 rotates. The mounting base 4 has a mounting cavity 42, which contains at least one second bearing 43. In this embodiment, two second bearings 43 are preferably provided to improve stability. The two second bearings 43 are connected to the front end of the motor shaft 31, preferably in a tight fit. The shaft 31 has a second shoulder 312 that abuts against the inner ring of the second bearing 43. Both second bearings 43 are deep groove ball bearings 122, with the frontmost shoulder being... Figure 1A wave washer 44 is provided between the outer ring of the uppermost second bearing 43 and the limiting protrusion 45 formed in the mounting base 4 to eliminate the axial gap between the components when the rotating shaft 31 is installed.

[0028] Preferably, in this embodiment, the outer rings of the two first bearings 12 are transitionally fitted with the bearing housing 1, and the outer rings of the two second bearings 43 are transitionally fitted with the mounting base 4; the stator 33 of the motor is tightly fitted and installed in a set position within the motor housing 5.

[0029] like Figure 4-5 As shown, the bearing housing 1 in this embodiment is also provided with several wire holes 13 for the leads of the motor stator 33 to pass through, so as to facilitate electrical connection with the subsequent controller.

[0030] As can be seen from the above, the motor mounting structure provided in this embodiment limits the bearing seat with a support sleeve, which can prevent loosening and displacement during operation and ensure the stability of operation.

[0031] Example 2:

[0032] like Figure 7-16 As shown in the figure, this embodiment provides a deep well pump, which includes a motor and a controller (not shown in the figure). The motor is installed using the motor mounting structure described in Embodiment 1.

[0033] The deep well pump also includes a controller housing 7, which houses the controller. The first end of the connecting seat 6 is sealed and detachably connected to the motor housing 5, for example, via a threaded connection or snap-fit, and is sealed with a sealing ring. The second end of the connecting seat 6 is also sealed and detachably connected to the controller housing 7, again via a threaded connection or snap-fit, and is sealed with a sealing ring. Furthermore, in this embodiment, the connecting seat 6 seals and isolates the motor housing 5 and the controller housing 7, meaning the cavity formed inside the motor housing 5 is not connected to the cavity formed inside the controller housing 7. Further, a conductive insert 61 is also sealed and inserted through the middle of the connecting seat 6. The first end of the conductive insert 61 is used for electrical connection to the motor, specifically by welding, crimping, or bolting to the leads of the motor stator 33; the second end of the conductive insert 61 is used for electrical connection to the controller, specifically by welding, crimping, or bolting to the cables on the controller, thereby achieving electrical connection between the controller and the motor, enabling the controller to control the motor's operation.

[0034] Thus, when the motor malfunctions, only the motor housing 5 needs to be disassembled for maintenance, without affecting the controller inside the controller housing 7; similarly, when the controller malfunctions, only the controller housing 7 needs to be disassembled for maintenance, without affecting the motor inside the motor housing 5. Furthermore, this embodiment features a conductive insert 61 on the connector 6, which enables electrical connection between the motor and the controller. When the motor malfunctions, only the connection between the motor and the first end of the conductive insert 61 needs to be disconnected, without disconnecting the controller from the second end of the conductive insert 61; similarly, when the controller malfunctions, only the connection between the controller and the second end of the conductive insert 61 needs to be disconnected, without disconnecting the motor from the first end of the conductive insert 61. If a wire were to pass through the connector 6, it would need to be cut during maintenance, affecting subsequent reconnection. Moreover, since the motor housing 5 and the controller housing 7 are sealed and isolated by the connector 6, water or other impurities can be prevented from entering the other housing during maintenance of one housing, and when the other housing contains cooling oil or other liquids, leakage is prevented.

[0035] To ensure strength, the motor housing 5, controller housing 7, and connector 6 are preferably made of metals such as stainless steel or aluminum alloy, and the conductive insert 61 must also be insulated from the connector 6. Specifically, as shown... Figure 9-12 As shown, the conductive insert 61 is integrally formed on the insulating pressure plate 611, which can be made of plastic. A through hole 631 is provided on the connector 6. The insulating pressure plate 611 can be installed on the connector 6 by means of fasteners or other methods, and the conductive insert 61 passes through the through hole 631 on the connector 6. Thus, the conductive insert 61 does not contact the connector 6 and can maintain insulation from it.

[0036] Since the connecting seat 6 seals and isolates the motor housing 5 and the controller housing 7, the conductive insert 61 in this embodiment is also sealed. Specifically, the deep well pump also includes a rubber sleeve 62, which includes a pressing edge 621 and an intermediate sleeve 622. The intermediate sleeve 622 is located in the middle of the pressing edge 621 and is placed inside the through hole 631, radially surrounding the installed conductive insert 61. The length of the intermediate sleeve 622 needs to protrude beyond the through hole 631. The pressing edge 621 is pressed tightly by the insulating pressure plate 611. Thus, in this embodiment, the insulating pressure plate 611 presses the pressing edge 621 of the rubber sleeve 62 to achieve a seal, and the intermediate sleeve 622 of the rubber sleeve 62 completely separates the conductive insert 61 from the connecting seat 6, ensuring that the conductive insert 61 and the connecting seat 6 will not come into contact.

[0037] Preferably, the connecting seat 6 is further provided with an installation groove 632 for accommodating the pressing edge 621 of the rubber sleeve 62, and the insulating pressure plate 611 is provided with a corresponding protruding pressing block 6111 for pressing the pressing edge 621, which seals the inner pressing plane and the outer wall of the pressing edge 621, forming multiple seals and improving the sealing effect.

[0038] Preferably, in this embodiment, oil is filled into the motor housing 5, and the cooling oil exchanges heat with the external water through the motor housing 5 to cool the motor; glue is filled into the controller housing 7 to fix and protect the controller, and at the same time, the controller can also exchange heat with the external water through the controller housing 7 to cool the controller.

[0039] like Figure 13 As shown, in this embodiment, a through mounting protrusion 64 is formed inside the connecting seat 6. An oil cup 65 is secured inside the mounting protrusion 64 by a retaining spring 653. The oil cup 65 includes an elastic bladder 651 and a pressure sleeve 652 located inside the elastic bladder 651. The elastic bladder 651 extends into the motor housing 5, and the pressure sleeve 652 supports and presses the elastic bladder 651. The pressure sleeve 652 also has a through hole 6521 for water inlet and outlet in its middle. The outer wall of the elastic bladder 651 is also provided with an annular side groove 6511, and the inner wall of the mounting protrusion 64 is correspondingly provided with an annular side protrusion 641. The side groove 6511 of the elastic bladder 651 engages with the side protrusion 641 for better installation, fixation, and sealing.

[0040] Furthermore, a sealing plug 66 is also secured within the mounting ring 64 between the oil cup 65 and the controller housing 7 via a retaining spring 653, leaving a certain water inlet space between the sealing plug 66 and the oil cup 65. Because the inner wall of the mounting ring 64 has a lateral protrusion 641, the retaining spring 653, which presses the oil cup 65, needs to be positioned from the side of the connecting seat 6 closest to the controller housing 7. Figure 13 The mounting ring 64 is inserted from the lower side upwards for installation, therefore it needs to be internally connected to the mounting protrusion 64, and a sealing plug 66 is provided in the middle for sealing and isolation. The connecting seat 6 is also provided with an inlet / outlet hole 654, which is used to directly connect the water inlet space between the sealing plug 66 and the oil cup 65 to the outside of the connecting seat 6. When the oil cup 65 deforms, water can adaptively drain in or out. There can be one inlet / outlet hole 654, or multiple holes can be arranged circumferentially to increase the water flow rate; in this embodiment, two holes are preferred and arranged symmetrically. In this embodiment, multiple axial ribs 642 are also provided on the outer periphery of the mounting protrusion 64, and the inlet / outlet holes 654 are provided on the axial ribs 642.

[0041] Preferably, the mounting protrusion 64 is located in the middle of the connecting seat 6, and a mounting edge 63 is formed on the outer periphery of the mounting protrusion 64. A through hole 631 for the conductive insert 61 to pass through is provided on the mounting edge 63. There can be one or more conductive inserts 61, and when there are multiple conductive inserts 61, they are distributed along the circumferential direction; for example, this embodiment includes three conductive inserts 61, each used to transmit three-phase current. Thus, in this embodiment, the oil cup 65 is located in the middle, and the conductive inserts 61 are located on the outer periphery, resulting in a compact structural arrangement. In this embodiment, the insulating pressure plate 611 is located between the motor housing 5 and the connecting seat 6 and is close to the motor housing 5. This facilitates the installation of the insulating pressure plate 611, and the mounting edge 63, located near the outer periphery of the oil cup 65, enhances the strength of the mounting protrusion 64 at the oil cup 65 mounting position.

[0042] In addition, since the oil cup 65 is installed on the connecting seat 6, this embodiment can reserve the space required for the oil cup 65 in the middle by setting the support sleeve 2.

[0043] Since the deep well pump needs to operate underwater, its sealing performance must be guaranteed. Therefore, this embodiment of the deep well pump also includes a first detection hole 46 that directly connects the cavity between the motor housing 5 and the connecting seat 6 to the outside. Pressure testing through the first detection hole 46 can detect whether there is leakage in the sealed cavity inside the motor housing 5. The deep well pump also includes a second detection hole 69 that directly connects the cavity between the controller housing 7 and the connecting seat 6 to the outside. Pressure testing through the second detection hole 69 can detect whether there is leakage in the sealed cavity inside the controller housing 7.

[0044] Preferably, such as Figure 8 As shown, the first detection hole 46 is disposed on the mounting base 4, eliminating the need to reserve space on the side wall of the connecting base 6, thus reducing the axial length of the connecting base 6. Figure 11-12 As shown, the second detection hole 69 is disposed on the side wall of the connecting seat 6. The controller housing 7 is filled with adhesive to a set height, forming a cavity between the adhesive-filled portion and the connecting seat 6. The second detection hole 69 connects the cavity to the outside. Thus, this embodiment, by providing the first detection hole 46 and the second detection hole 69, can perform sealing tests on the two sealed cavities respectively. Compared to the prior art structure that uses a single housing to install the motor and controller, this embodiment has a smaller space for the two sealed cavities, resulting in higher detection sensitivity; moreover, if leakage exists, the leakage point can be located more quickly.

[0045] like Figure 14-16As shown, the controller housing 7 in this embodiment is provided with a heat sink 8. One side of the heat sink 8 is fitted against the inner wall of the controller housing 7. For example, when the controller housing 7 is cylindrical, one side of the heat sink 8 is formed into an arc shape. The other side of the heat sink 8 is formed into a mounting plane, on which a plurality of mounting holes 81 are provided for mounting the controller. A tensioning bolt 82 is also threadedly connected to the other side of the heat sink 8. Before installation, the tensioning bolt 82 can be turned in a first direction, so that the tensioning bolt 82 is screwed inward toward the heat sink 8, and the heat sink 8 and the tensioning bolt 82 can be placed together in a set position inside the controller housing 7. Then, the tensioning bolt 82 can be turned in the second direction in the opposite direction, so that the tensioning bolt 82 is screwed outward away from the heat sink 8, so that the head of the tensioning bolt 82 contacts and presses against the inner wall of the controller housing 7. This installation structure is convenient to install, and there is no need to set a mutually cooperating snap-fit ​​structure between the controller housing 7 and the heat sink 8.

[0046] Furthermore, the tensioning bolt 82 is also provided with a locking nut 83. Due to the limited operating space, the locking nut 83 allows for easier reverse tightening of the tensioning bolt 82, ensuring that the tensioning bolt 82 is tightly pressed against the inner wall of the controller housing 7. This tightening force must ensure that the controller housing 7 is in a certain position. Figure 7 When placed vertically as shown, the heat sink 8 and its controller will not loosen; after installing the base 9, potting can be performed. The supporting bolts 82 and locking nuts 83 are preferably in two sets, located at opposite ends of the heat sink 8 for easy operation.

[0047] like Figure 7-8 As shown, in this embodiment, the first end of the connecting seat 6 is inserted into the first end of the motor housing 5. Two first sealing rings 671 are provided between the first end of the connecting seat 6 and the inner wall of the motor housing 5. The side wall of the first end of the connecting seat 6 and the side wall of the motor housing 5 are respectively provided with multiple first threaded blind holes 672 and multiple first connecting through holes 51, which can be connected by bolts. The second end of the motor housing 5 is inserted and installed with a mounting seat 4. Two first sealing rings 671 are also provided between the mounting seat 4 and the inner wall of the motor housing 5. The side wall of the mounting seat 4 and the side wall of the motor housing 5 are respectively provided with multiple first threaded blind holes 672 and multiple first connecting through holes 51, which can be connected by bolts.

[0048] Similarly, in this embodiment, the second end of the connector 6 is inserted into the first end of the controller housing 7. Two second sealing rings 681 are provided between the second end of the connector 6 and the inner wall of the controller housing 7. The side wall of the second end of the connector 6 and the side wall of the controller housing 7 are respectively provided with multiple second threaded blind holes 682 and multiple second connecting through holes 71, which can be connected by bolts. A base 9 is inserted and installed at the second end of the controller housing 7. Two second sealing rings 681 are also provided between the base 9 and the inner wall of the controller housing 7. The side wall of the base 9 and the side wall of the controller housing 7 are also respectively provided with multiple second threaded blind holes 682 and multiple second connecting through holes 71, which can be connected by bolts. In this embodiment, the power cord enters from the base 9 through the wiring grooves 92 on the sides of the two housings and the connector 6. A clamping plate 91 is provided on the side of the base 9 to cooperate with the sealing rings to seal and press the power cord.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electric machine mounting structure characterized by comprising: include: Bearing housing (1), the bearing housing (1) is disposed inside the motor housing (5), and at least one first bearing (12) is provided on the bearing housing (1), the first bearing (12) being connected to the non-driving end of the motor shaft (31); Support sleeve (2), the support sleeve (2) is disposed on the rear side of the bearing seat (1); Connecting seat (6) is connected to the motor housing (5) and the bearing seat (1) is limited by the support sleeve (2).

2. The motor mounting structure according to claim 1, characterized by The bearing housing (1) is provided with an angular contact bearing (121), which is capable of bearing axial force toward the rear end.

3. The motor mounting structure according to claim 2, characterized by The bearing housing (1) is also provided with a deep groove ball bearing (122).

4. The motor mounting structure according to claim 3, characterized by The bearing housing (1) has a bearing cavity (11) formed therein, and the first bearing (12) is disposed therein; the rotating shaft (31) has a first shoulder (311) that abuts against the inner ring of the first bearing (12).

5. The motor mounting structure according to claim 1 or 4, characterized by The motor mounting structure also includes a mounting base (4), which is connected to the front side of the motor housing (5). The mounting base (4) is provided with a mounting cavity (42), and at least one second bearing (43) is provided in the mounting cavity (42). The second bearing (43) is connected to the drive end of the rotating shaft (31). A wave washer (44) is provided between the outer ring of the foremost second bearing (43) and the limiting protrusion (45) in the mounting cavity (42). The rotating shaft (31) is provided with a second shoulder (312) that abuts against the inner ring of the second bearing (43).

6. The motor mounting structure according to claim 1, characterized by The bearing housing (1) is also provided with several wire holes (13).

7. A deep-well pump characterized by Includes the motor mounting structure as described in any one of claims 1-6.

8. The deep-well pump of claim 7, wherein, The deep well pump also includes a controller housing (7), the first end of the connecting seat (6) is sealed and detachably connected to the motor housing (5), and the second end of the connecting seat (6) is sealed and detachably connected to the controller housing (7); the connecting seat (6) seals and isolates the motor housing (5) and the controller housing (7), and a conductive insert (61) is also sealed and passed through the middle of the connecting seat (6), the first end of the conductive insert (61) is used for electrical connection with the motor, and the second end of the conductive insert (61) is used for electrical connection with the controller; The connector (6) is provided with a through hole (631) through which the conductive insert (61) passes; the deep well pump also includes an insulating pressure plate (611) and a rubber sleeve (62). The conductive insert (61) is integrally formed on the insulating pressure plate (611). The rubber sleeve (62) includes a pressing edge (621) and an intermediate sleeve (622). The intermediate sleeve (622) is located in the through hole (631) and surrounds the conductive insert (61). The insulating pressure plate (611) is installed on the connector (6) and presses the pressing edge (621). The connecting seat (6) also has a mounting groove (632) for accommodating the pressing edge (621), and the insulating pressure plate (611) has a corresponding protruding pressing block (6111) for pressing the pressing edge (621).

9. The deep-well pump of claim 8, wherein, The motor housing (5) is filled with oil, and the controller housing (7) is filled with glue to fix the controller. A through mounting protrusion (64) is formed inside the connecting seat (6). An oil cup (65) is held in place inside the mounting protrusion (64) by a retaining spring (653). The oil cup (65) includes an elastic bladder (651) and a pressure sleeve (652) located inside the elastic bladder (651). The pressure sleeve (652) is provided with a through hole (6521). The outer wall of the elastic bladder (651) is provided with a side groove (6511), and the inner wall of the mounting protrusion (64) is provided with a corresponding side protrusion (641). A sealing plug (66) is also fitted inside the mounting ring (64) between the oil cup (65) and the controller housing (7); the connecting seat (6) is also provided with an inlet / outlet hole (654), which is used to directly connect the space between the sealing plug (66) and the oil cup (65) to the outside of the connecting seat (6).

10. The deep-well pump of claim 9, wherein, The mounting protrusion (64) is located in the middle of the connecting seat (6), and the outer periphery of the mounting protrusion (64) is also provided with a mounting edge (63), and the mounting edge (63) is provided with a through hole (631); the through hole (631) is one or multiple holes are distributed along the circumference; The insulating pressure plate (611) is located between the motor housing (5) and the connecting seat (6), and the mounting edge (63) is set close to the motor housing (5).

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