CN213185731U

CN213185731U - Motor heat abstractor and tubing pump

Info

Publication number: CN213185731U
Application number: CN202022239367.2U
Authority: CN
Inventors: 陈沁茹
Original assignee: Huagong Jiangmen Electromechanical Co ltd
Current assignee: Huagong Jiangmen Electromechanical Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-05-11
Anticipated expiration: 2030-10-10
Also published as: WO2022073411A1

Abstract

The utility model provides a motor heat dissipation device, which comprises a motor body, wherein the body of the motor body is provided with a water through hole, and the motor body also comprises a rear end cover provided with a water outlet hole, a water outlet pipeline and a circuit board used for controlling the motor body to work; the circuit board is arranged in the rear end cover; the water passing hole is communicated with the water outlet hole through a water outlet pipeline. The utility model discloses motor heat abstractor radiating effect is good, need not to glue and seals the circuit board, dismantles the rear end cap and can detect and maintain the circuit board, and it is convenient to overhaul. The utility model discloses on motor heat abstractor's basis, the utility model provides a pipeline pump, it is good to the circuit board radiating effect, with circuit board seal installation in pipeline pump, the integration degree is high.

Description

Motor heat abstractor and tubing pump

Technical Field

The utility model relates to a heat-radiating equipment field, specifically speaking relates to a motor heat abstractor and tubing pump.

Background

The pipeline pump is a single-suction single-stage or multi-stage centrifugal pump, and is named as a pipeline pump because the inlet and the outlet of the pipeline pump are on the same straight line, and the calibers of the inlet and the outlet are the same, are similar to a section of pipeline and can be installed at any position of the pipeline. The structure is characterized in that the inlet and the outlet are the same and are on the same straight line, and are orthogonal to the axis center line. The circuit board in the motor body of tubing pump generally seals and sets up outside stator seat or be independent of the tubing pump as peripheral hardware, and the circuit board sets up and generally adopts encapsulating insulating seal in stator seat, and this kind of sealing method is unfavorable for the thermal of circuit board to be dispersed, leads to local production high temperature easily, and circuit component burns out easily, and the glue solution after the encapsulating is difficult to separate with the circuit board, overhauls inconveniently. Therefore, a motor heat dissipation device and a pipeline pump with good heat dissipation effect and convenient maintenance are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point of above-mentioned conventional art, provide a motor heat abstractor and tubing pump that the circuit board radiating effect is good, convenient to overhaul.

The purpose of the utility model is achieved through the following technical measures: a motor heat dissipation device comprises a motor body, a rear end cover with a water outlet hole, a water outlet pipeline and a circuit board for controlling the motor body to work, wherein the body of the motor body is provided with the water outlet hole; the circuit board is arranged in the rear end cover; the water passing hole is communicated with the water outlet hole through a water outlet pipeline.

In one embodiment of the present invention, the motor further comprises a cylinder, the motor body is disposed in the cylinder, and the rear end cap is sealed and fitted to the cylinder; the fuselage of motor body is installed on the rear end cap, forms water pipeline between the fuselage outer wall of motor body and the inner wall of barrel, and water pipeline communicates with each other with the water hole of crossing.

The utility model discloses an among them embodiment, motor body's output shaft extends towards the direction of keeping away from the rear end cap, and coaxial arrangement has the impeller assembly on motor body's the output shaft, and the one end that the rear end cap was kept away from to the impeller assembly is equipped with the lid and has closed the stator front shroud, and the suction opening has been seted up to the stator front shroud.

The utility model also provides a pipeline pump, include the utility model provides a motor heat abstractor still fits the front end housing of barrel front end including the lid, and the inlet opening coaxial with the apopore is seted up to the front end housing, and the inlet opening communicates with each other with the hole that absorbs water.

The utility model discloses an among them embodiment, be equipped with the cage in the front end housing, the both ends of cage opening part are connected with front end housing inside wall and stator front shroud respectively, and the radial edge of cage, barrel inner wall, motor body's fuselage outer wall, stator front shroud and impeller assembly encloses into the water storage cavity, and the backward flow hole has been seted up to the cage, is equipped with the differential pressure valve of control backward flow hole switching in the water storage cavity.

The utility model discloses an among them embodiment, the pressure differential valve is including installing in the guide pillar of stator front shroud, and the backward flow hole is run through to the one end of guide pillar, and guide pillar and backward flow hole clearance fit, the guide pillar closes on backward flow hole department cover and establishes the shell fragment, and the shell fragment is located the water storage cavity and can covers the backward flow hole.

In one embodiment of the present invention, the differential pressure valve comprises a mounting plate fixed on the outer wall of the isolation cover, a rod body with a front end and a rear end provided with a position limiting part, a spring sleeved on the rod body, and a sealing sheet sleeved on the rod body; the mounting plate is provided with a mounting hole coaxial with the reflux hole; the front end of the rod body penetrates through the mounting hole; the rear end of the rod body is positioned in the water storage chamber; the sealing piece is positioned between the rear end of the spring and the limiting piece in the water storage cavity and is positioned in the water storage cavity and can cover the backflow hole; the external diameter of spring is greater than the aperture of mounting hole and is less than the aperture of backward flow hole, and the front end and the mounting panel of spring offset, and when the locating part of body of rod front end and mounting panel offset, leave the clearance between gasket and the cage.

The utility model discloses an among them embodiment is equipped with the water conservancy diversion pipeline in the front end housing, and the end of intaking of water conservancy diversion pipeline communicates with each other with the inlet opening, and the backward flow hole is kept away from to the play water end of the pipeline of water conservancy diversion.

Compared with the motor heat dissipation device in the prior art, the circuit board is arranged in the inner cavity of the rear end cover, water enters the water outlet pipeline from the water through hole, the circuit board has larger heat dissipation space, and the heat dissipation effect is good; air in the inner cavity of the rear end cover and water in the water outlet pipeline generate heat transfer, so that the air in the inner cavity of the rear end cover is radiated, a circuit board does not need to be sealed by glue, the circuit board can be detected and maintained after the rear end cover is detached, and the circuit board is convenient to overhaul. The utility model discloses a tubing pump provides and is good to the circuit board radiating effect, with circuit board seal installation in the tubing pump, and integration degree is high.

Drawings

Fig. 1 is a sectional view of the piping pump structure of embodiment 1.

Fig. 2 is a schematic view of the differential pressure valve structure of embodiment 1.

Fig. 3 is a schematic view of the differential pressure valve structure of embodiment 2.

Wherein: 10. a barrel; 101. a water storage chamber; 201. A body; 2011. water passing holes; 202. a circuit board; 30. A rear end cap; 301. a water outlet pipeline; 401. an impeller assembly; 402. a guide vane front cover plate; 4021. a water suction hole; 50. a front end cover; 501. a flow guide end cover; 502. an isolation cover; 5021. a return orifice; 601. a guide post; 602. a spring plate; 701. mounting a plate; 7011. mounting holes; 702. a rod body; 703. a limiting member; 704. a spring; 705. and (7) sealing the sheet.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses a "front end", "rear end" are the flow through precedence order definition of water.

The utility model provides a fuselage 201 of motor body includes parts such as rotor, stator, pivot, stator seat and circuit board 202, and the connected mode, assembly structure and the theory of operation of each part are prior art, no longer give unnecessary details here. The setup of crossing water hole 2011 is seted up according to fuselage 201's structure, when fuselage 201 has the shell, should understand that water hole 2011 can set up on the shell, when fuselage 201 does not have the shell, should understand that water hole 2011 sets up on the stator seat, adjusts crossing setup of water hole 2011 according to the structure of actual fuselage, is knowing the utility model discloses should regard as the conventional selection under technical scheme's the prerequisite.

Example 1

As shown in fig. 1 and 2, the embodiment provides a pipeline pump, which includes a motor heat dissipation device, and further includes a front end cover 50 covering the front end of the cylinder 10, the front end cover 50 is provided with a water inlet coaxial with the water outlet, and the water inlet is communicated with the water suction hole 4021. The motor heat dissipation device of the embodiment comprises a cylinder 10 and a motor body arranged in the cylinder 10, wherein a water through hole 2011 is formed in a body 201 of the motor body, the motor body further comprises a rear end cover 30 which is hermetically covered at the rear end of the cylinder 10, and the rear end cover 30 is provided with a water outlet hole; a body 201 of the motor body is mounted on the rear end cover 30, and a water passing pipeline 101 is formed between the outer wall of the body 201 of the motor body and the inner wall of the cylinder 10; the water outlet pipe 301 is arranged in the rear end cover 30, and the water outlet pipe 301 is used for communicating a water pipeline and a water outlet; the motor further comprises a circuit board 202 for controlling the motor body to work, and the circuit board 202 is arranged in the rear end cover 30. The output shaft of motor body extends towards the direction of keeping away from rear end housing 30, and coaxial arrangement has impeller assembly 401 on the output shaft of motor body, and the one end that rear end housing 30 was kept away from to impeller assembly 401 is equipped with to cover has stator front shroud 402, and water sucking hole 4021 has been seted up to stator front shroud 402. An isolation cover 502 is arranged in the front end cover 50, two ends of an opening of the isolation cover 502 are respectively connected with the inner side wall of the front end cover 50 and the guide vane front cover plate 402, the isolation cover 502, the inner wall of the cylinder 10, the outer wall of the body 201 of the motor body, the guide vane front cover plate 402 and the radial edge of the impeller assembly 401 enclose into the water storage cavity 101, a backflow hole 5021 is formed in the isolation cover 502, and a pressure difference valve for controlling the backflow hole 5021 to be opened and closed is arranged in the water storage cavity 101. The differential pressure valve comprises a guide pillar 601 installed on a guide vane front cover plate 402, one end of the guide pillar 601 penetrates through a backflow hole 5021, the guide pillar 601 is in clearance fit with the backflow hole 5021, a spring piece 602 is sleeved at the position, close to the backflow hole 5021, of the guide pillar 601, and the spring piece 602 is located in the water storage cavity 101 and can cover the backflow hole 5021.

The working principle is as follows: the pipeline pump is placed in water (other fluids can be used), the circuit board 202 drives an output shaft of the motor body to drive the impellers to rotate, the water enters the impeller set 401 through the water inlet hole and the water suction hole 4021 in sequence, the impeller set 401 can comprise at least one group of impellers, the impeller set 401 of the embodiment comprises two groups, centrifugal force generated by the impellers throws the water to the water storage cavity 101, more gas is in the water storage cavity 101 at the beginning, the front end of the pipeline pump is downward, the rear end of the pipeline pump is upward, the water returns to the front end cover 50 from the lower part of the water storage cavity 101 through the backflow hole 5021, during the continuous working process of the motor body, the specific gravity of the water in the water storage cavity 101 is continuously increased, the gas sequentially passes through the upper end of the water storage cavity 101, the water through hole 2011 and the water outlet pipeline 301, and finally overflows from the water outlet hole until the pressure in the water storage cavity 101 is higher than the pressure in the front, deformed and covered on the reflux hole 5021, and the reflux hole 5021 is closed; when the air in the water storage chamber 101 is displaced, the continuous water delivery can be realized.

The motor heat abstractor rivers of this embodiment pass through the water pipeline, the water of water pipeline takes away the heat with the fuselage 201 of motor body takes place the heat transfer, through setting up circuit board 202 in the 30 inner chambers of rear end cap, water gets into outlet conduit 301 after the water pipeline passes through, circuit board 202 has bigger heat dissipation space, the heat transfer takes place for air in the 30 inner chambers of rear end cap and the water in outlet conduit 301, thereby dispel the heat to the air of the 30 inner chambers of rear end cap, need not to glue and seal circuit board 202, it can detect and maintain circuit board 202 to dismantle rear end cap 30, it is convenient to overhaul. The utility model discloses a tubing pump is good to circuit board 202's radiating effect, with circuit board 202 seal installation in the tubing pump, and the integration degree is high.

The existing self-priming pump is filled with water in a pump shell before starting (or water is stored in the pump shell), an impeller rotates at high speed after starting to enable water in an impeller channel to flow to a volute, at the moment, an inlet forms vacuum, a water inlet check valve is opened, and air in a suction pipe enters the pump and reaches the outer edge through the impeller channel. Because the self-priming pump is thrown water to all around through centrifugal force, so the exit of self-priming pump is not on a straight line, can't be applicable to the tubing pump. And the tubing pump that does not have self-priming capability need fill the pump chamber before using, otherwise burns out motor body easily, and can't extract low liquid level water, and this embodiment is through improving the encapsulation heat radiation structure of circuit board 202 in, combines the setting of differential pressure valve, makes the tubing pump have self-priming capability, need not during the use with the tubing pump submergence in liquid, can absorb the liquid of lower liquid level.

A flow guide pipeline is arranged in the front end cover 50, the water inlet end of the flow guide pipeline is communicated with the water inlet hole, and the water outlet end of the flow guide pipeline is far away from the reflux hole 5021. In order to avoid the influence of the water flow entering from the water inlet on the water pressure near the pressure difference valve, the on-off control of the pressure difference valve on the reflux hole 5021 is influenced.

Example 2

As shown in fig. 3, the embodiment provides a pipeline pump, which includes a motor heat dissipation device, and further includes a front end cover 50 covering the front end of the cylinder 10, the front end cover 50 is provided with a water inlet coaxial with the water outlet, and the water inlet is communicated with the water suction hole 4021. The motor heat dissipation device of the embodiment comprises a cylinder 10 and a motor body arranged in the cylinder 10, wherein a water through hole 2011 is formed in a body 201 of the motor body, the motor body further comprises a rear end cover 30 which is hermetically covered at the rear end of the cylinder 10, and the rear end cover 30 is provided with a water outlet hole; a machine body 201 of the motor body is arranged on the rear end cover 30, and a water passing pipeline is formed between the outer wall of the machine body 201 of the motor body and the inner wall of the cylinder 10; the water outlet pipe 301 is arranged in the rear end cover 30, and the water outlet pipe 301 is used for communicating a water pipeline and a water outlet; the motor further comprises a circuit board 202 for controlling the motor body to work, and the circuit board 202 is arranged in the rear end cover 30. The output shaft of motor body extends towards the direction of keeping away from rear end housing 30, and coaxial arrangement has impeller assembly 401 on the output shaft of motor body, and the one end that rear end housing 30 was kept away from to impeller assembly 401 is equipped with to cover has stator front shroud 402, and water sucking hole 4021 has been seted up to stator front shroud 402. An isolation cover 502 is arranged in the front end cover 50, two ends of an opening of the isolation cover 502 are respectively connected with the inner side wall of the front end cover 50 and the guide vane front cover plate 402, the isolation cover 502, the inner wall of the cylinder 10, the outer wall of the body 201 of the motor body, the guide vane front cover plate 402 and the radial edge of the impeller assembly 401 enclose into a water storage cavity 101, a return hole 5021 is formed in the isolation cover 502, a differential pressure valve for controlling the opening and closing of the return hole 5021 is arranged in the water storage cavity 101, and the differential pressure valve comprises a mounting plate 701 fixed on the outer wall of the isolation cover 502, a rod body 702 with a limiting piece 703 arranged at the front end and the rear end respectively, a; the mounting plate 701 is provided with a mounting hole 7011 coaxial with the reflux hole 5021; the front end of the rod body 702 penetrates through the mounting hole 7011; the rear end of the rod body 702 is positioned in the water storage chamber 101; the sealing sheet 705 is positioned between the rear end of the spring 704 and the limiting piece 703 in the water storage cavity 101, and the sealing sheet 705 is positioned in the water storage cavity 101 and can cover the return hole 5021; the outer diameter of the spring 704 is larger than the aperture of the mounting hole 7011 and smaller than the aperture of the backflow hole 5021, the front end of the spring 704 abuts against the mounting plate 701, and when the limiting piece 703 at the front end of the rod body 702 abuts against the mounting plate 701, a gap is reserved between the sealing piece 705 and the isolation cover 502.

The structure of the present embodiment is different from that of embodiment 1 in that the structure of the differential pressure valve of the present embodiment is a normally open state when gas still exists in the water storage chamber 101, and when the water pressure of the water storage chamber 101 is higher than the water pressure in the front end cap 50, the generated differential pressure causes the limiting member 703 in the water storage chamber 101 to move toward the return hole 5021, and the spring 704 is compressed by the limiting member 703 until the sealing piece 705 closes the return hole 5021.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A motor heat dissipation device comprises a motor body and is characterized in that a water through hole is formed in the body of the motor body, and the motor heat dissipation device also comprises a rear end cover with a water outlet hole, a water outlet pipeline and a circuit board for controlling the motor body to work; the circuit board is arranged in the rear end cover; the water passing hole is communicated with the water outlet hole through the water outlet pipeline.

2. The motor heat sink according to claim 1, further comprising a cylinder, wherein the motor body is disposed in the cylinder, and the rear end cap is hermetically covered on the cylinder; the motor body is arranged on the rear end cover, a water passing pipeline is formed between the outer wall of the motor body and the inner wall of the cylinder body, and the water passing pipeline is communicated with the water passing holes.

3. The motor heat sink according to claim 2, wherein the output shaft of the motor body extends in a direction away from the rear end cover, an impeller assembly is coaxially mounted on the output shaft of the motor body, a front guide vane cover plate is disposed at one end of the impeller assembly away from the rear end cover, and a water suction hole is disposed in the front guide vane cover plate.

4. The pipeline pump is characterized by comprising the motor heat dissipation device as recited in claim 3, and further comprising a front end cover covering the front end of the cylinder, wherein the front end cover is provided with a water inlet hole coaxial with the water outlet hole, and the water inlet hole is communicated with the water suction hole.

5. The pipeline pump according to claim 4, wherein an isolation cover is arranged in the front end cover, two ends of an opening of the isolation cover are respectively connected with the inner side wall of the front end cover and the front guide vane cover plate, the isolation cover, the inner wall of the cylinder, the outer wall of the motor body, the front guide vane cover plate and the radial edges of the impeller assembly are enclosed to form a water storage cavity, the isolation cover is provided with a backflow hole, and a pressure difference valve for controlling the backflow hole to open and close is arranged in the water storage cavity.

6. The pipeline pump of claim 5, wherein the differential pressure valve comprises a guide post mounted on the front cover plate of the guide vane, one end of the guide post penetrates through the backflow hole, the guide post is in clearance fit with the backflow hole, a spring is sleeved on the guide post close to the backflow hole, and the spring is located in the water storage chamber and can cover the backflow hole.

7. The pipeline pump of claim 5, wherein the differential pressure valve comprises a mounting plate fixed on the outer wall of the isolation hood, a rod body provided with a limiting piece at each of the front end and the rear end, a spring sleeved on the rod body, and a sealing piece sleeved on the rod body; the mounting plate is provided with a mounting hole coaxial with the backflow hole; the front end of the rod body penetrates through the mounting hole; the rear end of the rod body is positioned in the water storage chamber; the sealing piece is positioned between the rear end of the spring and the limiting piece in the water storage cavity and positioned in the water storage cavity and can cover the backflow hole; the external diameter of spring is greater than the aperture of mounting hole just is less than the aperture of backward flow hole, the front end of spring with the mounting panel offsets, the locating part of body of rod front end with when the mounting panel offsets, the gasket with leave the clearance between the cage.

8. The tubing pump of claim 7, wherein a flow guide tube is disposed in the front end cap, a water inlet end of the flow guide tube is communicated with the water inlet hole, and a water outlet end of the flow guide tube is far away from the return hole.