Shield pump motor stator device and shield pump

Abstract

The utility model provides a motor stator device of a shield pump, which comprises a motor casing and an internal coil winding, a central cavity is reserved on the inner peripheral side of the coil winding, the motor casing comprises a cylindrical cylindrical casing and end covers fixedly connected to two ends of the cylindrical casing, a cylindrical shielding insulation sleeve is arranged on the inner peripheral side of the coil winding, and the end covers are fixedly connected to two ends of the cylindrical casing. Two axial ends of the shielding insulation sleeve are respectively in sealing connection with the end covers at the two ends; an annular space between the shielding insulation sleeve and the motor shell is filled with pouring sealant, the structure of the shielding insulation sleeve is optimized, the two ends of the shielding insulation sleeve are in sealing fit with the end covers of the motor, a sealing structure is arranged at the joint position of the insulation sleeve and the motor shell, and the space is completely separated. And the space between the shielding insulation sleeve and the inner wall of the motor shell is filled with the pouring sealant, and the space is completely filled with the pouring sealant, so that the possibility that condensed water appears at the positions of the coil winding and the iron core in the stator device is fundamentally eliminated. The utility model further provides the shield pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump equipment technical field, specifically, relate to a shield pump motor stator device, and also relate to a shield pump. BACKGROUND

[0002] The shield pump connects the pump and motor together, the rotor of the motor and the impeller of the pump are fixed on the same shaft, the rotor and the stator of the motor are separated by the shield sleeve, the rotor operates in the medium to be transported, and the power is transmitted to the rotor through the stator magnetic field. In addition, the shield pump is not complex to manufacture, and the liquid force end can be designed and manufactured according to the structure type and relevant standard norms usually adopted by centrifugal pumps.

[0003] When the shield pump transports water with a temperature lower than the ambient temperature, the temperature inside the shield sleeve of the shield motor is low, and the temperature of the outer wall in the environment is high, so when the motor stops, the temperature of the outer wall of the shield sleeve is lower than the dew point temperature in the air, a large amount of water vapor and water droplets are generated when the water vapor in the air outside the shield sleeve meets the outer surface of the shield sleeve, and condensate water is formed. The condensate water not only causes the stator core to rust, but also destroys the dielectric strength of the stator winding insulation material, so that the electrical conductivity is enhanced, electrical breakdown is caused, and the motor is burnt out.

[0004] The shield pump of the prior art generally adds a condensate water discharge hole at the motor stop opening, and when the shield sleeve generates condensate water, the condensate water is naturally discharged through the discharge hole. This structure not only causes sewage to flow horizontally, but also makes the protection level of the motor highest only to meet the requirements of IP44, and cannot be applied to installation sites with higher protection level requirements.

[0005] In summary, the existing shield pump motor is prone to generate condensate water in the motor, causing damage to the circuit elements in the stator and motor leakage. UTILITY MODEL CONTENTS

[0006] The utility model wants to solve the technical problem that the existing shield pump motor is prone to generate condensate water in the motor, causing damage to the circuit elements in the stator and motor leakage.

[0007] To solve the above problems, the utility model provides a shield pump motor stator device, which comprises a motor shell and a coil winding arranged in the motor shell in a ring shape, a cylindrical center cavity for installing a rotor device is reserved on the inner circumferential side of the coil winding, the motor shell comprises a cylindrical shell body and end covers fixedly connected to both ends of the cylindrical shell body, a cylindrical shielding insulation sleeve is arranged on the inner circumferential side of the coil winding, and the two ends of the shielding insulation sleeve are sealingly connected with the end covers at the two ends in the axial direction; the annular space between the shielding insulation sleeve and the motor shell is filled with pouring sealant.

[0008] The utility model provides a kind of shielding pump stator design for insulation protection performance optimization, utilize the inherent self-design of shielding pump, i.e.

[0009] As preferred scheme, the cylindrical shell is integrally connected with the electric control box on the outer peripheral wall, the cylindrical shell is provided with a wiring hole at the mounting position corresponding to the electric control box, and the cylindrical shell is provided with an exhaust hole communicating with the internal pouring glue space on the side wall corresponding to the position of the electric control box. This design optimizes the motor shell for the pouring process, and sets a through hole for wiring on the cylindrical shell corresponding to the electric control box. The air in the inner cavity can be completely discharged through the wiring hole for pouring glue, and the exhaust hole is set on the other position of the cylindrical shell to exhaust during the pouring process, ensuring that the pouring glue completely fills the inner cavity of the stator and ensuring the implementation effect of pouring.

[0010] As preferred scheme, the inner side end face of the end cover away from one end of the water inlet and outlet of the shielding pump is integrally connected with a ring-shaped support table, and the end face of the ring-shaped support table is tightly abutted with one end of the shielding insulation sleeve through a sealing gasket. This design optimizes the space sealing between the shielding sleeve and the end cover position of the motor shell, and the inner end face of the end cover is provided with a protruding ring-shaped support table coaxial with the central shaft, which increases the axial extension distance of the end cover to the inner space of the motor. A matching sealing gasket is arranged on the end face of the structure to seal the end face of the corresponding position of the shielding insulation sleeve.

[0011] As preferred scheme, the shielding insulation sleeve is integrally connected with a shaft sleeve structure for supporting the rotor shaft on the inner end face of one end adjacent to the ring-shaped support table. Based on the above structure, to avoid the interference of the structure of the shielding insulation sleeve with the normal structure cooperation of the stator and the rotor device, the end design of the shielding insulation sleeve is optimized, and a shaft sleeve structure is arranged to rotate and support the outer peripheral surface near the end of the rotor shaft. To ensure the working effect of the rotor, the shaft sleeve position can be provided with a matching bearing.

[0012] As a preferred scheme, the shielding insulation sleeve is provided with a fitting center hole at a position corresponding to the shaft sleeve structure, and an exhaust screw is screwed into the fitting center hole.

[0013] As a preferred scheme, the inner side end face of the end cover provided with a water inlet / outlet at one end of the shielding pump is fixedly provided with an annular support plate through a sealing ring, and the shielding insulation sleeve is provided with an annular mounting groove at a position corresponding to the annular support plate, and a sealing gasket is embedded in the mounting groove.

[0014] As a preferred scheme, the inner side end face of the end cover provided with a water inlet / outlet at one end of the shielding pump is provided with a shaft sleeve structure for supporting the rotor shaft at a central region.

[0015] As a preferred scheme, the sealing glue is polyurethane sealing glue.

[0016] The anti-condensation structure shielding motor assembly and the shielding pump effectively solve the problems that condensed water in the shielding pump causes short circuit of the stator coil and condensed water outside the junction box causes short circuit of the junction, greatly weaken the harm of the condensed water to the motor, and have the characteristics of anti-condensation, dust prevention, small vibration, low noise, long service life, good insulation performance, good heat dissipation performance and strong environmental adaptability, and are widely applied to various circulating or pressurizing heat pump systems.

[0017] The shielding pump provided with the shielding pump motor stator device also has the beneficial effects of the shielding pump motor stator device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1The utility model provides a kind of external overall structure schematic diagram of shielding pump motor stator device provided by the utility model;

[0019] Figure 2 For Figure 1 The utility model provides a kind of shielding pump motor stator device's section structure schematic diagram;

[0020] Figure 3 For Figure 1 The utility model provides a kind of shielding pump motor stator device's external partial structure schematic diagram.

[0021] Wherein, Figures 1-3 In the middle:

[0022] 1, motor shell;1-1, cylindrical shell;1-2, end cover;1-3, wiring hole;1-4, exhaust hole;1-5, annular support platform;2, electric control box;3, coil winding;4, iron core;5, shielding insulation sleeve;5-1, assembly center hole;6, sealing gasket;7, shaft sleeve structure;8, exhaust screw;9, annular support plate. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following will be further described in conjunction with specific embodiments.

[0024] Before the working principle of the utility model is described in detail, the description of the utility model needs to be further explained: in the description of the utility model, it should be pointed out that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end" and "another end" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The device or element indicated or implied must have a specific orientation, a specific orientation and operation, so it cannot be understood as a limitation of the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can be detachable connection, or integral connection;It can be mechanically connected, it can be directly connected, it can be indirectly connected through an intermediate medium, or it can be two elements welded connection. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0026] Reference Figures 1-3 The following examples are described as follows, Figure 1The utility model provides a kind of external overall structure schematic diagram of shielding pump motor stator device provided by the utility model; Figure 2 For Figure 1 The utility model provides a kind of cross section structure schematic diagram of shielding pump motor stator device; Figure 3 For Figure 1 A kind of external partial structure schematic diagram of shielding pump motor stator device.

[0027] The utility model discloses an embodiment provides a kind of shielding pump motor stator device, including motor shell 1 and the coil winding 3 of annular distribution in motor shell 1, the inner periphery side of coil winding 3 is reserved with the cylindrical central cavity for installing rotor device, motor shell 1 includes the cylindrical columnar shell 1-1 of barrel and the end cap 1-2 fixedly connected in the both ends of columnar shell 1-1, the inner periphery side of coil winding 3 is provided with the cylinder of shielding insulation sleeve 5, the both ends of shielding insulation sleeve 5 axial are sealedly connected with the end cap 1-2 of two ends respectively;Annular space between shielding insulation and motor shell 1 is filled with pouring sealant.

[0028] The utility model provides a kind of shielding pump stator design for optimizing insulation protection performance, utilize the inherent design of shielding pump itself, i.e. the structure of its shielding insulation sleeve 5 is optimized, makes its both ends and the end cap 1-2 of motor seal fit, and sets up sealing structure at the joint position of insulation sleeve and motor shell 1, completely separates space, and pours pouring sealant in the space between shielding insulation sleeve 5 and the inner wall of motor shell 1, the space is completely filled with pouring sealant, to fundamentally eliminate the possibility of condensate water in the position of coil winding 3 and iron core 4 in stator device, effectively solve the technical problem that shielding pump motor is easy to produce condensate water in motor and causes the damage of circuit element in stator and motor leakage.

[0029] In the technical scheme provided by the embodiment, the outer peripheral wall of the columnar shell 1-1 is fixedly attached to the electric control box 2, the columnar shell 1-1 is provided with a wiring hole 1-3 at a position corresponding to the installation position of the electric control box 2, and the columnar shell 1-1 is provided with an exhaust hole 1-4 communicating with the internal pouring space at a position corresponding to the electric control box 2. This design optimizes the motor shell 1 during the pouring process, and the columnar shell 1-1 is provided with a through hole for wiring between the electric control box 2. The pouring sealant can be poured through the wiring hole 1-3, and the air in the inner cavity is completely exhausted to ensure the completeness of the pouring. The exhaust hole 1-4 is arranged at another position of the columnar shell 1-1 to exhaust during the pouring process, ensuring that the pouring sealant completely fills the inner cavity space of the stator and ensuring the implementation effect of the pouring.

[0030] In the technical scheme provided by the embodiment, the inner side end face of the end cover 1-2 away from the water inlet and outlet of the canned motor pump is integrally connected with a ring-shaped support platform 1-5, and the end face of the ring-shaped support platform 1-5 is tightly abutted with one end of the shielding insulation sleeve 5 through a sealing gasket 6. The design optimizes the space sealing between the shielding sleeve and the end cover 1-2 of the motor shell 1, and the inner end face of the end cover 1-2 is provided with a protruding ring-shaped support platform 1-5 coaxial with the central shaft, so that the axial extension distance of the end cover 1-2 to the motor internal space is increased, and the sealing gasket 6 is arranged on the end face of the structure to abut the end face of the corresponding position of the shielding insulation sleeve 5 for mutual sealing.

[0031] In the technical scheme provided by the embodiment, the inner end face of the shielding insulation sleeve 5 at one end adjacent to the ring-shaped support platform 1-5 is fixedly attached with a shaft sleeve structure 7 for supporting the rotor shaft. On the basis of the above structure, in order to avoid the structure of the shielding insulation sleeve 5 interfering with the normal cooperation of the stator with the rotor device, the end of the shielding insulation sleeve 5 is optimized and designed to be provided with the shaft sleeve structure 7 for rotatably supporting the outer circumferential surface near the end of the rotor shaft. In order to ensure the working effect of the rotor, the position of the shaft sleeve can be provided with a matching bearing.

[0032] In the technical scheme provided by the embodiment, the shielding insulation sleeve 5 is provided with an assembly center hole 5-1 at the position corresponding to the shaft sleeve structure 7, and the assembly center hole 5-1 is screw-mounted with an exhaust screw 8 for axial positioning of the rotor shaft. For the above structure design, a structure for exhaust and maintenance is arranged at the end of the rotor shaft of the pump, which functions include discharging the air in the pump after the pump is started, and when the pump fails due to jamming and the like, the exhaust screw 8 is unscrewed, an external force is applied to the end of the rotor shaft, and the rotor is rotated to eliminate the failure.

[0033] In the technical scheme provided by the embodiment, the inner side end face of the end cover 1-2 provided with the water inlet and outlet of the canned motor pump is fixedly attached with a ring-shaped support plate 9 through a sealing ring, and the shielding insulation sleeve 5 is provided with a ring-shaped mounting groove at the position corresponding to the ring-shaped support plate 9, and the mounting groove is embedded with a sealing gasket 6. The design optimizes the position where the other end of the shielding insulation sleeve 5 is combined with the end cover 1-2 of the motor shell 1, and the ring-shaped support plate 9 is arranged between the end faces of the shielding insulation sleeve 5 and the end cover 1-2 for mutual cooperation, so that the end face cooperation structure is more controllable and the processing cost is lower. In order to ensure that the cooperation of the shielding insulation sleeve 5 and the ring-shaped support plate 9 is good in sealing performance, the sealing gasket 6 is correspondingly arranged and embedded on the shielding insulation sleeve 5.

[0034] In the technical scheme provided by the embodiment, the inner side end face of the end cover 1-2 provided with the water inlet and outlet of the canned motor pump is provided with a shaft sleeve structure 7 for supporting the rotor shaft in the central region. The shaft sleeve structure 7 is also arranged in the center of the end cover 1-2 on one side of the water inlet and outlet of the canned motor pump, which is matched with the above-mentioned rotor shaft support design.

[0035] In the technical scheme provided by the embodiment, the pouring glue is polyurethane pouring glue.

[0036] The anti-condensation structure shielded motor assembly and the shielded pump effectively solve the problems of short circuit caused by condensate water in the shielded pump burning the stator coil and short circuit caused by condensate water outside the terminal box, greatly weaken the harm of condensate water to the motor, and have the characteristics of anti-condensate water, dustproof, small vibration, low noise, long service life, good insulation performance, good heat dissipation performance and strong environmental adaptability, and are widely applied to various circulating or supercharging heat pump systems.

[0037] The embodiment of the utility model also provides a shielded pump comprising the shielded pump motor stator device in any one of the above embodiments, since the embodiment of the shielded pump motor stator device has the above beneficial effects, the shielded pump with the shielded pump motor stator device should also have corresponding beneficial effects.

[0038] Although the utility model discloses as above, the protection scope of the utility model disclosed is not limited to this only. The person skilled in the art can make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall into the protection scope of the utility model.

Claims

1. A shielded pump motor stator device, comprising a motor housing (1) and coil windings (3) arranged in a ring within the motor housing (1), a cylindrical central cavity for mounting a rotor device is reserved on the inner peripheral side of the coil windings (3), the motor housing (1) comprises a cylindrical housing (1-1) and end covers (1-2) fixedly connected to both ends of the cylindrical housing (1-1), characterized in that, The inner periphery of the coil winding (3) is provided with a cylindrical shielding insulation sleeve (5), the two axial ends of the shielding insulation sleeve (5) are respectively sealingly connected with the two end covers (1-2); the annular space between the shielding insulation sleeve (5) and the motor shell (1) is filled with potting glue.

2. The canned pump motor stator apparatus of claim 1, wherein, The outer peripheral wall of the columnar shell (1-1) is fixedly connected with an electric control box (2), the columnar shell (1-1) is provided with a wiring hole (1-3) at a position corresponding to the mounting position of the electric control box (2), and the columnar shell (1-1) is provided with an exhaust hole (1-4) communicating with the internal potting glue space at a position corresponding to the electric control box (2).

3. The canned pump motor stator apparatus of claim 2, wherein, The inner side end face of the end cover (1-2) away from the water inlet and outlet of the shielding pump is integrally connected with an annular support table (1-5), and the end face of the annular support table (1-5) is tightly abutted with one end of the shielding insulation sleeve (5) through a sealing gasket (6).

4. The canned pump motor stator apparatus of claim 3, wherein, The shielding insulation sleeve (5) is fixedly connected with a shaft sleeve structure (7) for supporting the rotor shaft at the inner end face of one end adjacent to the annular support table (1-5).

5. The canned pump motor stator apparatus of claim 4, wherein, The shielding insulation sleeve (5) is provided with a center assembly hole (5-1) at a position corresponding to the shaft sleeve structure (7), and the center assembly hole (5-1) is threadedly connected with an exhaust screw (8).

6. The canned pump motor stator apparatus of claim 3, wherein, The inner side end face of the end cover (1-2) provided with the water inlet and outlet of the shielding pump is fixedly connected with an annular support plate (9) through a sealing ring, the shielding insulation sleeve (5) is provided with an annular mounting groove at a position corresponding to the annular support plate (9), and the mounting groove is embedded with a sealing gasket (6).

7. The canned pump motor stator apparatus of claim 5, wherein, The inner side end face of the end cover (1-2) provided with the water inlet and outlet of the shielding pump is provided with a shaft sleeve structure (7) for supporting the rotor shaft at the center region.

8. The canned pump motor stator apparatus of claim 1, wherein, The potting glue is polyurethane potting glue.

9. A canned pump comprising a rotor device and a stator device cooperating with each other, characterized in that, The stator device is the shielding pump motor stator device according to any one of claims 1-8.

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