CN213039481U

CN213039481U - Shielding circulating pump

Info

Publication number: CN213039481U
Application number: CN202021507337.9U
Authority: CN
Inventors: 卓成者; 王明泽; 杨海滨; 党超
Original assignee: Zhejiang Shimge Pump Co Ltd
Current assignee: Zhejiang Shimge Pump Co Ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-23
Anticipated expiration: 2030-07-27

Abstract

The utility model relates to a shielding circulating pump, the problem of solving the comdenstion water production in the use that prior art exists is the shielding pump and burn the machine condition now easily, the technical scheme of solution: an annular cavity is formed between the motor shell and the shielding sleeve assembly, the stator assembly is formed into a stator annular body through thermosetting plastic packaging, the stator annular body is arranged in the annular cavity, the stator annular body divides the annular cavity to form an upper cavity and a lower cavity, the upper cavity is far away from the pump shell, the lower cavity is close to the pump shell, a connecting terminal or a lead is arranged on the part, close to the upper cavity, of the stator assembly, and the connecting terminal or the lead is electrically connected with the motor control module. The method has the following effects: the stator assembly is plastically packaged by using a thermosetting plastic packaging material, so that the winding is protected from contacting with condensed water, and the condition of burning is avoided.

Description

Shielding circulating pump

Technical Field

The utility model relates to a shielding circulating pump especially relates to a shielding circulating pump that is used for domestic hot and cold water circulating system's machine is burnt in anti-condensation.

Background

A domestic shielding circulating pump for hot and cold water circulation, system pressure boost, a very outstanding trouble problem is that the motor that the comdenstion water caused burns out, because this type of pump generally adopts wet rotor structure, there is the difference in temperature between outside air and the transport medium, very easily at motor housing outer surface generation comdenstion water, the winding of motor is probably destroyed to the comdenstion water, causes the winding to burn out, also can cause the inside moisture of motor to invade the terminal box, causes the components and parts in the terminal box to burn out.

The existing common method comprises the following steps: the water drainage groove is arranged in the motor shell or the moisture-proof enameled wire is used to improve the damage degree of the condensed water to the components in the motor or the junction box to a certain extent, so that the problem cannot be fundamentally solved.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provide a shielding circulating pump, which plastically packages a stator assembly into an annular entity through thermosetting molding compound, and prevents the enameled wire in the stator assembly from being directly exposed in the air, thereby fundamentally solving the problem of winding burnout; the stator assembly of the annular entity divides the cavity formed by the shielding sleeve assembly and the motor shell into an upper cavity and a lower cavity, the circulation resistance between the upper cavity and the lower cavity is large, and the moisture or the condensed water generated in the lower cavity is prevented from entering the upper cavity, so that the safety of components in the junction box communicated with the upper cavity is ensured, and the motor fault is avoided.

The above technical purpose of the present invention is mainly solved by the following technical solutions: multifunctional leisure sofa, including the support frame, set up the seatpad on the support frame, its characterized in that the support frame for the fixed cavity framework that forms of steel sheet suppression concatenation, the symmetry both sides opening and the intercommunication of support frame, cavity part forms and holds the chamber.

As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure: the rear wall of the support frame is recessed inwards to form an outer accommodating cavity.

A separation body is arranged between the seat cushion and the support frame, and the edge of the separation body is inwards concave with the edge of the seat cushion.

The utility model discloses beneficial effect who has: 1. the stator assembly is plastically packaged by using a thermosetting plastic packaging material, so that the winding is protected from contacting condensed water; 2. the stator assembly is plastically packaged into an annular entity, and the motor cavity is divided into an upper cavity and a lower cavity which are independent, so that electronic components in the junction box communicated with the upper cavity are prevented from being affected with damp and burnt.

Drawings

Fig. 1 is a schematic structural section view of a canned motor pump to which the present invention is applied.

Fig. 2 is a schematic cross-sectional view of a cavity formed by the motor housing and shield assembly of fig. 1.

Fig. 3 is an isometric view of the stator assembly shown in fig. 1.

Figure 4 is an exploded view of the stator assembly shown in figure 3.

Figure 5 is an isometric view of the patch panel of figure 2.

Figure 6 is an isometric view of the motor housing of figure 1.

Fig. 7 is an isometric view of the canned motor pump of fig. 1.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 1 and 2, the canned motor pump includes a pump housing 1 and a pump impeller disposed in the pump housing, and the pump impeller is driven by a motor to rotate, so as to achieve the purpose of pumping water (medium). The motor comprises a motor housing 3, the motor housing 3 and the pump housing 1 are axially connected through a flange, and a terminal box 4 for placing a motor control module (or electric and/or electronic components of a motor control device) is arranged on the motor housing 3.

In this embodiment, the motor housing 3 is a cylindrical structure, the terminal box 4 is connected to the cylindrical side of the motor housing, and the motor control module in the terminal box is used for controlling the operation of the motor.

As shown in fig. 1 and 4, the motor includes a stator assembly 5 and a rotor assembly 6, the rotor assembly is disposed in an inner hole of the stator assembly, a circular permanent magnet 61 is disposed on the rotor assembly 6, the permanent magnet 61 is axially aligned with a stator core on the stator assembly, a current with a certain rule is input through the stator assembly, the rotor assembly is driven to rotate, one end of the rotor assembly 6 close to a pump housing is fixedly connected with a pump impeller, the pump impeller 2 is driven to rotate, the pump impeller 2 and the rotor assembly 6 are soaked in a conveyed medium, lubrication and cooling of the motor are achieved, the stator assembly 5 is isolated from the rotor assembly and the medium through a shielding sleeve assembly 7, and the stator assembly 5 is not in.

As shown in fig. 1-4, the stator assembly 5 is disposed in an annular cavity 8 formed by the motor housing 3 and the shield assembly 7, the stator assembly 5 is molded into an annular body by thermosetting plastic, and the stator assembly 5 includes a winding stator core 51, a molding body 52, and a wiring board 53; the stator assembly 5 divides the annular cavity into an upper cavity 81 far away from the pump housing and a lower cavity 82 close to the pump housing, the stator assembly close to the upper cavity is provided with a wiring board 53 on which a connecting terminal I532 is arranged, and the stator assembly is electrically connected with a motor control device in the junction box 4 through a through hole 31 on the motor shell.

As shown in fig. 1 and 3, the stator assembly includes a stator core and the rest, the rest is entirely covered by thermoplastic plastics to form a ring, the inner ring wall 54 of the ring is matched with the outer ring wall 71 of the shielding sleeve assembly, the outer ring wall 55 of the stator assembly is matched with the inner ring wall 31 of the motor housing, the inner ring wall 54 of the stator core on the stator assembly is not covered by thermoplastic plastics, the stator core is a bare silicon steel sheet, the stator core is matched with the shielding sleeve assembly made of stainless steel and the motor housing made of aluminum, the inner ring circle 54 of the stator core is in interference fit with the outer ring wall 71 of the shielding sleeve assembly, the outer ring wall 55 of the stator core is in interference fit with the inner ring wall 31 of the motor housing, to ensure effective retention of the stator core within the motor housing so that the upper and lower cavities have a high flow resistance and condensed water and moisture cannot enter the upper cavity 81 from the lower cavity 82.

As shown in fig. 1 and 7, in this embodiment, the junction box is disposed on the cylindrical side of the motor housing, the connection terminal II 41 on the junction box extends into the motor housing through the side opening 32 on the motor housing, and is electrically connected with the connection terminal I531 located in the upper cavity through plugging, the side opening is sealed by the rubber gasket 9 surrounding the opening, and by sealing the upper cavity, the circulation of the outside air and the upper cavity is avoided, so that the excessive moisture inside the upper cavity and the control box is avoided.

As shown in fig. 1, 3 and 5, the portion of the stator assembly in the upper cavity is provided with a terminal plate 53, on which a connection terminal I531 is provided, which converts the neutral electrical connection of the stator to the connection terminal I.

As shown in fig. 1 and 3, the stator assembly 5 has at least one non-axially extending slot 56 for a locating slot when the stator assembly is pressed into the motor housing, the slot not being axially extending to avoid breaking the separation of the upper and lower cavities.

As shown in fig. 6, at least one drainage hole 33 is formed on the end surface where the motor housing and the pump housing are connected, so that condensed water generated in the lower housing is guided out, and the condensed water is prevented from accumulating in the motor. In use, the rotor assembly and pump impeller are connected and immersed in the medium being conveyed.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A canned motor pump comprising a pump housing, a motor disposed in a motor housing axially coupled to the pump housing, a pump impeller disposed in the pump housing and driven by the motor, and a terminal box coupled to the motor housing for receiving a motor control module, the motor comprising a stator assembly, and a rotor assembly disposed opposite the stator assembly, the rotor assembly coupled to the pump impeller, the stator assembly and the rotor assembly separated by a boot assembly, characterized in that: an annular cavity is formed between the motor shell and the shielding sleeve assembly, the stator assembly is formed into a stator annular body through thermosetting plastic packaging, the stator annular body is arranged in the annular cavity, the stator annular body divides the annular cavity to form an upper cavity and a lower cavity, the upper cavity is far away from the pump shell, the lower cavity is close to the pump shell, a connecting terminal or a lead is arranged on the part, close to the upper cavity, of the stator assembly, and the connecting terminal or the lead is electrically connected with the motor control module.

2. The canned motor pump of claim 1, wherein the inner annular wall of the stator ring engages the outer annular wall of the canned jacket assembly, and the outer annular wall of the stator ring engages the inner annular wall of the motor housing.

3. The shielding circulating pump of claim 1 or 2, wherein the inner and outer circles of the stator core of the stator assembly are not coated by the thermoplastic plastic, the inner circle of the stator core is in interference fit with the outer circle of the shielding sleeve assembly, and the outer circle of the stator core is in interference fit with the inner hole of the motor shell.

4. The canned motor pump of claim 3, wherein the terminal box is disposed on a side of the motor housing, the terminal on the terminal box extending into the motor housing through a side opening in the motor housing, the side opening being sealed by a rubber gasket surrounding the opening.

5. The shielding circulation pump of claim 4, wherein the portion of the stator assembly in the upper cavity is provided with a connection terminal I, and the connection terminal I and a connection terminal II on the junction box are electrically connected through plugging.

6. The canned motor pump of claim 5, wherein the portion of the stator assembly in the upper cavity is provided with a terminal block, on which connection terminals I are provided, the terminal block transferring the neutral electrical connection of the stator to the connection terminals.

7. The shield circulation pump of claim 6 wherein said stator assembly has at least one slot therethrough which is not axially oriented.

8. The canned motor pump of claim 7, wherein the motor housing and the pump housing are provided with at least one drainage hole on the end surface where they are connected.