阅读说明：本技术 屏蔽循环泵 (Shield circulating pump ) 是由 卓成者 王磊 石景波 于 2019-08-19 设计创作，主要内容包括：本发明涉及一种屏蔽循环泵,解决现有技术存在的冷凝水容易进入电机内部影响电机正常工作的问题,采用的技术方案：所述电机为塑封电机,所述电机的定子总成和/或电路板包覆在不可拆卸的电机壳体中,所述电机壳体上一体成型有电机法兰,所述电机法兰和所述泵体法兰通过法兰连接件形成连接,所述电机壳体的中心具有用于设置所述屏蔽套的轴向贯穿孔,所述控制盒的端面设有固定结构,所述固定结构用于与所述电机壳体的端面形成连接。其效果：利用模塑的电机壳体将定子总成塑封在电机壳体内,使电机更可靠。(The present invention relates to a kind of shielding circulating pumps, solve the problems, such as that condensed water of the existing technology is easily accessible motor internal influence motor normal work, the technical solution used: the motor is plastic packaging motor, the field frame assembly and/or circuit board of the motor are coated in non-removable electric machine casing, integrally formed with motor flange on the electric machine casing, the motor flange and the pump housing flange are formed by flange connector to be connected, the center of the electric machine casing, which has, axially penetrates through hole for be arranged the housing, the end face of the control box is equipped with fixed structure, the fixed structure is used to be formed with the end face of the electric machine casing and connect.Its effect: the electric machine casing of molding is utilized in electric machine casing, to keep motor more reliable field frame assembly plastic packaging.)

1. shielding circulating pump, including motor, the pump housing being connect with motor by axial flange, the motor is away from pump housing direction One control box of axial connection on end face, the motor is plastic packaging motor, and the shell of the motor is the electric machine casing of molding, institute The field frame assembly and/or circuit board for stating motor are coated in the non-removable electric machine casing, and setting has in the motor The rotor assembly of the housing of spacer medium leakage, the motor is arranged in housing, and the rotor assembly is with unification motor Impeller is arranged on the machine shaft, which is characterized in that described integrally formed with motor flange on the electric machine casing in shaft Motor flange and the pump housing flange are formed by flange connector to be connected, and the center of the electric machine casing has for being arranged The hole that axially penetrates through of housing is stated, the end face of the control box is equipped with fixed structure, and the fixed structure is used for and the motor The end face of shell forms connection.

2. shielding circulating pump according to claim 1, it is characterised in that the fixed structure on the control box is that buckle connects Fitting, the bayonet connection are integrally moulded on the control box, and axially penetrating through for the electric machine casing is set on the peripheral wall in hole It is equipped with corresponding card slot, the bayonet connection and the card slot form one-to-one clamping, the bayonet connection made to exist Radial and axial upper formed with the electric machine casing limits connection relationship.

3. shielding circulating pump according to claim 2, it is characterised in that the inner wall for axially penetrating through hole at least has one A step extends from one end of the motor flange to an extreme direction of control box, and the aperture for axially penetrating through hole successively becomes Small, the card slot is arranged in aperture minimum stepped portions.

4. shielding circulating pump according to claim 3, it is characterised in that the card slot is arranged in aperture minimum stepped portions Inner ring surface, the card slot have axial depth.

5. shielding circulating pump according to claim 4, it is characterised in that the bayonet connection is four protruding portions, described The outer end of protruding portion is arranged the fastener portion turned up, the bayonet connection protrude into it is described axially penetrate through hole, the fastener portion buckles into The card slot and formed radially, axially limit.

6. shielding circulating pump according to claim 5, it is characterised in that the control box is being formed radially four protruding portions, Radial inner fovea part is formed between adjacent protrusions, it is corresponding that the radial direction inner fovea part avoids the flange connector on the motor flange Axial space.

7. shielding circulating pump according to claim 6, it is characterised in that the control box is equipped with step structure, under described Step surface is arranged on a protruding portion, which is long protruding portion, and the long protruding portion radially extends length Spend compared with protruding portion described in other to radially extend length long, contact is set on the long protruding portion.

8. shielding circulating pump according to claim 7, it is characterised in that the bayonet connection is arranged in the top bar On face, the periphery of the bayonet connection is arranged in the outlet hole of the motor.

9. shielding circulating pump according to claim 1 to 6, it is characterised in that the control box and the motor Elastic sealing element is provided between shell, the elastic component at least surrounds the axial direction of perforative hole and/or electric machine casing on control box Perforative hole.

10. shielding circulating pump according to claim 8, it is characterised in that be arranged between the control box and the electric machine casing Flexible sealing element, the elastic component at least surround perforative hole and/or the hole of electric machine casing axially penetrated through on control box.

Technical field

The present invention relates to a kind of shielding circulating pump more particularly to a kind of shielding circulations for domestic freezing heating water circulation system Pump.

Background technique

For hot and cold water circulation, the shielding circulating pump of the household of system boost, motor is generally included, passes through axial direction with motor The impeller in the pump housing and being driven by motor is arranged in the pump housing of flanged joint；Motor generally has the electric machine casing of aluminum, rotor The field frame assembly of assembly and surrounding rotor assembly is arranged in electric machine casing.The aluminum electric machine casing has in the side towards the pump housing There are flange or similar interconnecting piece to be fixedly connected with the counter structure on the pump housing by fasteners such as screws.The aluminum motor casing Body away from the pump housing end face on be axially connected with control box, for place the electrical and/or electronic component of motor control assembly with And the electric connecting part (such as frequency converter) for motor.For the shielding circulating pump of this structure, leakproofness is not good enough, when It when occurring condensed water in use, is easily accessible inside motor, motor is caused to break down, be not normally functioning.

This middle-size and small-size mature shielding circulating pump has been produced in enormous quantities, even therefore minimum improvement It might mean that the huge saving in terms of manufacture and/or assembly, further increase this pump technically simultaneously It is relatively reliable, it is on the other hand the target of people's pursuit always to the reduction of manufacturing cost.

Summary of the invention

A kind of shielding circulating pump is provided it is an object of the invention to solve the above problem of the existing technology, passes through mould Electric machine casing is integrally formed in plastics, is sealed in field frame assembly is non-removable in electric machine casing, field frame assembly is avoided to be exposed to In air, improve the reliability of motor (especially in terms of insulation pressure resistance, condensation-proof)；Motor flange disk one on electric machine casing Bodyization molding is made, convenient to connect with the pump housing；Connection structure is integrally molded on electric machine casing, in connection structure and control box Fixed structure is removably fixedly connected in axially and radially formation, facilitates the connection of control box and electric machine casing.

What above-mentioned technical purpose of the invention mainly solved by the following technical programs: shielding circulating pump, including motor, The pump housing being connect with motor by axial flange, axial connection one control box of the motor on the end face in pump housing direction, The motor is plastic packaging motor, and the shell of the motor is the electric machine casing of molding, the field frame assembly and/or circuit of the motor Plate is coated in the non-removable electric machine casing, and setting has the housing of spacer medium leakage in the motor, described The rotor assembly of motor is arranged in housing, and leaf is arranged on the machine shaft with machine shaft is unified in the rotor assembly Wheel, which is characterized in that pass through on the electric machine casing integrally formed with motor flange, the motor flange and the pump housing flange Flange connector forms connection, and the center of the electric machine casing has the hole that axially penetrates through for the housing to be arranged, described The end face for controlling box is equipped with fixed structure, and the fixed structure is used to be formed with the end face of the electric machine casing and connect.Pass through mould Electric machine casing is integrally formed in plastics, is sealed in field frame assembly is non-removable in electric machine casing, field frame assembly is avoided to be exposed to In air, improve the reliability of motor (especially in terms of insulation pressure resistance, condensation-proof)；Motor flange disk one on electric machine casing Bodyization molding is made, convenient to connect with the pump housing；Connection structure is integrally molded on electric machine casing, in connection structure and control box Fixed structure is removably fixedly connected in axially and radially formation, facilitates the connection of control box and electric machine casing.Moreover, molding Electric machine casing component incorporate multiple components and be structure as a whole, facilitate production and processing to assemble, improve efficiency, and guaranteeing Overall cost can also be reduced under the premise of performance and quality to a certain extent.

In practical applications, motor flange and pump housing flange have the same or similar appearance profile, the pump housing radially There is threaded hole on flange, there is the identical through-hole of pitch-row on motor flange, pass through motor flange through-hole and be screwed onto pump housing method Screw in blue threaded hole, realization motor are fixedly connected with the pump housing.

The center setting of electric machine casing axially penetrates through hole, axially penetrates through what hole was adapted with the outer circle wall with housing On the one hand the cooperation of shape, preferably small―gap suture guarantees the property easy to assembly for axially penetrating through hole and housing, on the other hand guarantees When housing is by larger pressure distortion, the inner hole limitation housing deformation in hole is axially penetrated through, plays the role of reinforcing housing.

One end that electric machine casing deviates from the pump housing is arranged in control box, controls and is provided with fixed structure on box, fixed structure exists Radial direction is no more than the part (i.e. fixed structure can cooperate with the end face of electric machine casing) of electric machine casing, electric machine casing setting Upper counter structure and fixed structure cooperate, and control box is fixed on electric machine casing, and fixed device can be buckle, are also possible to Screw is fixed or other feasible modes, after the assembly is completed, fixed structure is hidden protection in electric machine casing or control box It is interior.

As further improving and supplementing to above-mentioned technical proposal, the present invention uses following technical measures: the control Fixed structure on box is bayonet connection, and the bayonet connection is integrally moulded on the control box, the electric machine casing Axially penetrate through and be provided with corresponding card slot on the peripheral wall in hole, the bayonet connection and the card slot form one-to-one card It connects, the bayonet connection is made to limit connection relationship in radial and axial upper formed with the electric machine casing.

The inner wall for axially penetrating through hole at least has a step, from one end of the motor flange to control box one Extreme direction extends, and the aperture for axially penetrating through hole successively becomes smaller, and the card slot is arranged in aperture minimum stepped portions.Successively become When the aperture of change can guarantee molding, the hole section for axially penetrating through all different-diameters in hole is produced on a die core axle, And can guarantee the concentricity of these hole sections to the greatest extent, card of the nose end of minimum diameter on control box, electric machine casing Slot is integrally formed also by respective protrusions structure being arranged on die core axle in molding, and production and processing is convenient.

The inner ring surface of aperture minimum stepped portions is arranged in the card slot, and the card slot has axial depth.

The control box is being formed radially four protruding portions, and radial inner fovea part, the radial direction are formed between adjacent protrusions Inner fovea part avoids the corresponding axial space of flange connector on the motor flange.Convenient for production assembling process in, screw The tools such as knife protrude into, and the assembly of the assembly and fixed screw that avoid control box interferes.

The control box is equipped with step structure, contact is arranged on the terrace of appearing on the stage, for corresponding in motor Component electrically connects.

The control box is equipped with step structure, and the leave from office terrace is arranged on a protruding portion, this is described prominent Portion is long protruding portion out, and the long protruding portion radially extends radially extend length long, institute of the length compared with protruding portion described in other It states and contact is set on long protruding portion.

Elastic sealing element is provided between the control box and the electric machine casing, the elastic component at least surrounds on control box Perforative hole and/or the hole of electric machine casing axially penetrated through.Elastic sealing element can be O-ring, be placed on control box and motor In the groove that shell end face is formed, it is also possible to quadric injection mould in the elastic component in control cassette bottom portion, the elastic component at least surrounds Perforative hole and/or electric machine casing axially penetrate through hole on control box, prevent steam from the gap of control box and electric machine casing into Enter to control in box and motor.

The invention has the benefit that 1, using the electric machine casing of molding by field frame assembly plastic packaging in electric machine casing, Keep motor more reliable.2, integration is molded to the ring flange connected with the pump housing on electric machine casing, and is fixedly connected with control box Structure, structure is simple, it is easy to produce and assembly.3, the electric machine casing component molded incorporates multiple components and is integrated knot Structure facilitates production and processing to assemble, improves efficiency, and can also reduce to a certain extent under the premise of guaranteeing performance and quality Overall cost.

Detailed description of the invention

Fig. 1 is a kind of structural profile illustration of the invention.

Fig. 2 is overall structure diagram of the invention.

Fig. 3 is the schematic diagram of the section structure of the motor in the present invention

Fig. 4 is the structural schematic diagram of the motor in the present invention.

Fig. 5 is the schematic diagram of the section structure of the housing in the present invention.

Fig. 6 is the structural schematic diagram of the control box in the present invention.

Fig. 7 is the schematic diagram of the section structure of the control box in the present invention.

Specific embodiment

Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.