CN219344999U

CN219344999U - Low-noise self-cooling variable frequency pump unit

Info

Publication number: CN219344999U
Application number: CN202320739143.9U
Authority: CN
Inventors: 张克家
Original assignee: Zibo Ande Valve Technology Co ltd
Current assignee: Zibo Ande Valve Technology Co ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2023-07-14
Anticipated expiration: 2033-04-06

Abstract

The utility model relates to the technical field of variable frequency pump units, in particular to a low-noise self-cooling variable frequency pump unit which comprises a water-cooling motor and a water pump variable frequency control cabinet, wherein the water-cooling motor is arranged at the upper end of the water pump; one end of the water-cooling motor is connected with one end of the water pump through a cooling water return pipe, the other end of the water-cooling motor is connected with the other end of the water pump through a cooling water inlet pipe, and two ends of the cooling water return pipe and the cooling water inlet pipe are respectively communicated with the inside of the water-cooling motor and the inside of the water pump; the water inlet pipe is connected to the highest position of the head pressure of the outer circle of the impeller of the water pump shell, water enters from the bottom end of the low-end cooling cavity of the water-cooled motor, and then the cooling return pipe is connected to the water pump inlet from the high position of the water-cooled motor, so that the driving motor of the self-cooling water pump is utilized, and the fan noise of the motor is reduced.

Description

Low-noise self-cooling variable frequency pump unit

Technical Field

The utility model relates to the technical field of variable frequency pump units, in particular to a low-noise self-cooling variable frequency pump unit.

Background

A water pump is a machine that delivers or pressurizes a liquid. It transmits mechanical energy or other external energy of prime mover to liquid to increase energy of liquid, and is mainly used for conveying liquid including water, oil, acid-alkali liquor, emulsion, suspension emulsion and liquid metal.

The water pump that is used in the secondary water supply or heating heat exchange station in north of some domestic communities at present, install near the residential building or in resident's roof and basement, because the inside part of pump unit self needs to work when using, just can unavoidable produce the noise, when a plurality of pump units work in same district, a plurality of pump units can constantly produce the noise, leads to regional noise too big, especially is noise disturbing the people phenomenon night more.

Disclosure of Invention

The utility model aims to provide a low-noise self-cooling variable frequency pump unit so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the low-noise self-cooling variable frequency pump unit comprises a water-cooling motor and a water pump variable frequency control cabinet, wherein the water-cooling motor is arranged at the upper end of the water pump, a sealing junction box is fixedly arranged on the side wall of one end of the water-cooling motor, and one end of the sealing junction box is connected with the variable frequency control cabinet through a wire;

one end of the water cooling motor is connected with one end of the water pump through a cooling return pipe, the other end of the water cooling motor is connected with the other end of the water pump through a cooling water inlet pipe, and two ends of the cooling return pipe and the cooling water inlet pipe are respectively communicated with the inside of the water cooling motor and the inside of the water pump.

Preferably, the lower end of the water-cooled motor is fixedly arranged at the upper end of the water pump through bolts, and the lower end of the water pump is fixedly provided with a base.

Preferably, one end of the water pump is provided with a water inlet, and the other end of the water pump is provided with a water outlet.

Preferably, the upper end of the cooling return pipe is fixedly connected with the outer wall of the upper end of the water cooling motor, and the lower end of the cooling return pipe is fixedly connected with the outer wall of the water inlet at one side of the water pump.

Preferably, the upper end of the cooling water inlet pipe is fixedly connected with the side wall at one side of the lower end of the water cooling motor, and the other end of the cooling water inlet pipe is fixedly connected with the outer wall of the water outlet at one end of the water pump.

Preferably, the shell of the water-cooled motor 1 is made of steel materials with good heat conductivity.

Preferably, the cooling water return pipe and the cooling water inlet pipe are both made of stainless steel.

Compared with the prior art, the utility model has the beneficial effects that:

the water inlet pipe is connected to the highest position of the head pressure of the outer circle of the impeller of the water pump shell, water enters from the bottom end of the low-end cooling cavity of the water-cooled motor, and then the cooling return pipe is connected to the water pump inlet from the high position of the water-cooled motor, so that the driving motor of the self-cooling water pump is utilized, and the fan noise of the motor is reduced.

Drawings

FIG. 1 is a front cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a water pump according to the present utility model;

fig. 3 is a schematic front view of the overall structure of the present utility model.

In the figure: 1. a water-cooled motor; 2. a water pump; 3. a base; 4. sealing the junction box; 5. a cooling return pipe; 6. cooling the water inlet pipe; 7. a water inlet; 8. a water outlet; 9. and a variable frequency control cabinet.

Detailed Description

In order to make the objects, technical solutions, and advantages of the present utility model more apparent, the embodiments of the present utility model will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present utility model, are intended to be illustrative only and not limiting of the embodiments of the present utility model, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

In the description of the present utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides a low noise self-cooling variable frequency pump unit, including water-cooled motor 1, water pump 2 variable frequency control cabinet 9, water-cooled motor 1 installs in the upper end of water pump 2, fixed mounting has sealed terminal box 4 on the one end lateral wall of water-cooled motor 1, sealed terminal box 4's one end is passed through the wire and is connected with variable frequency control cabinet 9, adopt variable frequency control, let water pump 2 operate at low speed as required, the noise is lower, the lower extreme of water-cooled motor 1 passes through bolt fixed mounting in the upper end of water pump 2, the lower extreme fixed mounting of water pump 2 has base 3, water-cooled motor 1 wiring adopts sealed terminal box 4, macromolecular material auxiliary metal seals, can be waterproof dustproof (be higher than IP 55), cold and hot weather corrosion can both effectively prevent, be suitable for various installation environment in the room;

one end of the water-cooled motor 1 is connected with one end of the water pump 2 through the cooling water return pipe 5, the other end of the water-cooled motor 1 is connected with the other end of the water pump 2 through the cooling water inlet pipe 6, the two ends of the cooling water return pipe 5 and the cooling water inlet pipe 6 are respectively communicated with the inside of the water-cooled motor 1 and the water pump 2, the upper end of the cooling water return pipe 5 is fixedly connected with the outer wall of the water inlet 7 on one side of the water pump 2, the upper end of the cooling water inlet pipe 6 is fixedly connected with the side wall on one side of the lower end of the water-cooled motor 1, the other end of the cooling water return pipe is fixedly connected with the outer wall of the water outlet 8 on one side of the water pump 2, the cooling water return pipe 5 and the cooling water inlet pipe 6 are all made of stainless steel, the strength and the durability of the water pipe are guaranteed, the cooling water inlet pipe 6 is connected to the bottom of a cooling cavity of the water pump 1 at the highest position of the shell impeller head pressure, and then the cooling water return pipe 5 is connected to the inlet of the water pump 2 from the high position of the water-cooled motor 1, so that the medium is utilized to self-cool the driving motor of the water pump, and the fan noise of the motor is reduced.

One end of the water pump 2 is provided with a water inlet 7, the other end is provided with a water outlet 8, the suction inlet at the water inlet 7 end of the water pump 2 is enlarged and rounded, the suction rotational flow loss is reduced by pressurization, and the cavitation allowance is reduced, so that the cavitation noise is reduced, the water flow noise caused by suction rotational flow is reduced, through testing, the self-cooling water pump 2 has noise lower than 40 dB at the position five meters away from the water pump 2, and the noise is smaller than the sound of a refrigerator in a home.

The water-cooled motor 1 is formed by adopting high-quality cold-rolled silicon steel sheets through compression molding, electromagnetic optimization mute technology design is used for reference, high-temperature-resistant insulating materials are used, high-temperature overload resistance of the motor is enhanced, a shell of the water-cooled motor 1 is made of steel materials with good heat conductivity, the heat dissipation effect of the water-cooled motor 1 is improved, and reliable operation of the water-cooled motor 1 is ensured.

When the device works, the water inlet pipe 6 is connected to the highest position of the head pressure of the outer circle of the impeller of the water pump 2, water enters from the bottom end of the low-end cooling cavity of the water-cooled motor 1, and then the cooling return pipe 5 is connected to the inlet of the water pump 2 from the high position of the water-cooled motor 1, so that the medium is utilized to self-cool the driving motor of the water pump 2, and the fan noise of the motor is reduced.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low noise self-cooling variable frequency pump unit, includes water-cooled motor (1), water pump (2) variable frequency control cabinet (9), and water-cooled motor (1) installs in the upper end of water pump (2), its characterized in that: a sealing junction box (4) is fixedly arranged on the side wall of one end of the water-cooled motor (1), and one end of the sealing junction box (4) is connected with a variable frequency control cabinet (9) through a wire;

one end of the water-cooling motor (1) is connected with one end of the water pump (2) through a cooling water return pipe (5), the other end of the water-cooling motor (1) is connected with the other end of the water pump (2) through a cooling water inlet pipe (6), and two ends of the cooling water return pipe (5) and the cooling water inlet pipe (6) are respectively communicated with the inside of the water-cooling motor (1) and the inside of the water pump (2).

2. The low noise self-cooling variable frequency pump unit of claim 1, wherein: the lower end of the water-cooled motor (1) is fixedly arranged at the upper end of the water pump (2) through bolts, and the lower end of the water pump (2) is fixedly provided with the base (3).

3. A low noise self-cooling variable frequency pump assembly according to claim 2, wherein: one end of the water pump (2) is provided with a water inlet (7), and the other end is provided with a water outlet (8).

4. A low noise self-cooling variable frequency pump unit according to claim 3, wherein: the upper end of the cooling return pipe (5) is fixedly connected with the outer wall of the upper end of the water cooling motor (1), and the lower end of the cooling return pipe is fixedly connected with the outer wall of the water inlet (7) at one side of the water pump (2).

5. The low noise self-cooling variable frequency pump unit of claim 4, wherein: the upper end of the cooling water inlet pipe (6) is fixedly connected with the side wall of one side of the lower end of the water cooling motor (1), and the other end of the cooling water inlet pipe is fixedly connected with the outer wall of the water outlet (8) of one end of the water pump (2).

6. The low noise self-cooling variable frequency pump unit of claim 5, wherein: the shell of the water-cooled motor (1) is made of steel materials with good heat conductivity.

7. The low noise self-cooling variable frequency pump unit of claim 6, wherein: the cooling return pipe (5) and the cooling water inlet pipe (6) are both made of stainless steel.