Permanent magnet efficient single-stage pump

Abstract

The utility model relates to a permanent magnet efficient single-stage pump which comprises a pump body, a pump cover, a motor shaft, a permanent magnet synchronous motor, a deflation valve, an impeller and a base. The pump cover and the pump body are detachably connected together, and the pump body is fixed to the base. A pressure tapping hole is formed in the pump body water outlet flange; the deflation valve is arranged at a deflation hole in the side edge of the pump cover and pump body connecting flange; a motor shaft of the water pump permanent magnet synchronous motor is directly connected with the impeller, and the pump cover and the permanent magnet synchronous motor are fixed together. Compared with a conventional single-stage pump which adopts a YE3 asynchronous motor and is provided with a coupler, the single-stage pump has the advantages of being simple in structure, low in energy consumption, small in noise, long in service life, convenient to maintain and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a single -stage pump, concretely relates to a permanent magnet high -efficient single -stage pump of structure optimization, low energy consumption, low noise, long life, high efficiency. BACKGROUND

[0002] Permanent magnet motor as a kind of efficient, reliable, low energy consumption motor, compared with traditional motor, there are many advantages.Therefore, it has received more and more attention and application.In recent years, with the in-depth development of energy and environmental protection, the development of permanent magnet motor industry is also faster and faster, and the market scale of industry is increasing.

[0003] Traditional single-stage pump usually adopts YE3 asynchronous motor to connect motor and pump body by shaft coupling.However, this connection mode has many deficiencies.Firstly, the design of shaft coupling increases the structural complexity of water pump itself and the difficulty of later maintenance;Secondly, asynchronous motor is relatively weak in energy consumption, noise control and other aspects;Thirdly, water pump performance may be degraded due to shaft coupling wear or looseness, affecting the stable operation of pump;Finally, the conventional water pump impeller selects cast iron material, and the efficiency decay is large in short term. SUMMARY

[0004] In view of the above problems, the main purpose of the utility model is to provide a permanent magnet high -efficient single -stage pump of structure optimization, low energy consumption, low noise, long life, high efficiency.

[0005] The utility model solves the above technical problem by the following scheme: a permanent magnet high -efficient single -stage pump, characterized by: the permanent magnet high -efficient single -stage pump includes: pump body, pump cover, motor shaft, permanent magnet synchronous motor, air release valve, impeller, base.

[0006] Pump cover and pump body are detachably connected together, and pump body is fixed on base;Drain flange of pump body is provided with pressure tapping hole, and air release valve is arranged at air release hole position on the side edge of pump cover and pump body connecting flange;Motor shaft of water pump permanent magnet synchronous motor is directly connected with impeller, and pump cover and permanent magnet synchronous motor are fixed together.

[0007] In the specific embodiment of the utility model, pump cover and pump body are fixedly connected by bolt, and O-shaped sealing ring is used for sealing between the two.

[0008] In the specific embodiment of the utility model, pump cover and permanent magnet synchronous motor are fixed together by bolt.

[0009] In the specific embodiment of the utility model, a pair or two pairs of lifting lugs are arranged symmetrically on permanent magnet synchronous motor.

[0010] In the specific embodiment of the utility model, drain valve for plugging drain port is arranged on the drain port of pump body.

[0011] In the embodiment of the utility model, the drain valve is located close to the base.

[0012] In the embodiment of the utility model, the motor shaft of the water pump permanent magnet synchronous motor is connected with the impeller through a key and a fastening screw.

[0013] In the embodiment of the utility model, the pump body is fixed on the base by bolts.

[0014] In the embodiment of the utility model, a plug is arranged in the pressure tapping hole to plug the pressure tapping hole.

[0015] In the embodiment of the utility model, a mechanical seal is arranged between the motor shaft and the shell.

[0016] The utility model discloses a positive progress effect lies in: the utility model provides permanent magnet high -efficient single -stage pump and common similar technology compared with, has following advantages:

[0017] 1, structure optimization: cancel the shaft coupling, and the pump is coaxial, and the overall structure is more compact, and the concentricity of the water pump is higher. Prolong the service life of water pump, at the same time, facilitate later maintenance, overhaul, and greatly reduce the later operation cost.

[0018] 2, energy consumption is low: compared with YE3 asynchronous motor, the efficiency of permanent magnet motor is higher, and the energy consumption is lower. At the same time, the direct drive mode reduces the loss of energy in the transmission process, further improves the efficiency, and reduces the energy consumption.

[0019] 3, noise is low: the magnetic field fluctuation of permanent magnet motor is smaller, and mechanical vibration and electromagnetic noise are also lower. And the design without shaft coupling reduces the noise generated due to the loosening or wear of parts, and the noise generated during the operation of the pump is greatly reduced.

[0020] 4, long life: the direct drive mode reduces the friction and wear between parts, and reduces the failure rate. At the same time, the rotor resistance of permanent magnet motor is smaller, and the mechanical loss is also relatively low, so the overall service life is longer.

[0021] 5, high efficiency: the impeller is upgraded to stainless steel material, which is more corrosion resistant, thereby avoiding the problem of efficiency reduction caused by rust of the impeller, and ensuring the stability of the water pump operation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure diagram of permanent magnet high -efficient single -stage pump provided by the utility model.

[0023] Figure 2 It is the local enlarged view of Figure 1 .

[0024] The following is the name corresponding to the mark in the utility model:

[0025] Figure 1 In the middle: Pump body 1, Bolt 2, Bolt 3, Motor shaft 4, Lifting lug 5, Permanent magnet synchronous motor 6, Pump cover 7, Vent valve 8, O-ring seal 9, Plug 10, Impeller 11, Base 12, Bolt 13, Drain valve 14, Mechanical seal 15. Detailed Implementation

[0026] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0027] Figure 1 This is a schematic diagram of the permanent magnet high-efficiency single-stage pump proposed in this utility model. Figure 2 for Figure 1 A magnified view of a portion of the image. For example... Figures 1-2 As shown: The permanent magnet high-efficiency single-stage pump includes: pump body 1, pump cover 7, motor shaft 4, permanent magnet synchronous motor 6, vent valve 8, impeller 11, and base 12; the pump cover 7 is detachably connected to the pump body 1, and the pump body 1 is fixed on the base 12; a pressure tapping hole is provided on the drain flange of the pump body 1, and the vent valve 8 is located at the vent hole position on the side of the flange connecting the pump cover 7 and the pump body 1; the motor shaft 4 of the permanent magnet synchronous motor 6 is directly connected to the impeller 11, and the pump cover 7 is fixed to the permanent magnet synchronous motor 6.

[0028] The motor shaft 4 of the pump permanent magnet synchronous motor 6 is tightly connected with the impeller 11 through a key and a fastening screw, a co-axial integrated design of the motor and the pump is realized, the structure is simple, energy transmission loss is reduced, and operation efficiency is improved. The pump cover 7 is fixed with the permanent magnet synchronous motor 6 through the bolt 3. The pump cover 7 is fixedly connected with the pump body 1 through the bolt 2, the O-shaped sealing ring 9 is arranged between the pump cover 7 and the pump body 1 to seal, and the sealing performance of the water pump is ensured. The air release valve 8 is arranged at the air release hole position of the flange side of the pump cover 7 and the pump body 1, and convenience is provided for discharging gas in the water pump cavity. The plug 10 is used for plugging the pressure tapping hole to prevent water pump leakage. Finally, the lifting lug 5 is arranged to facilitate the installation and movement of the water pump body, the water pump body is lifted through the lifting lug 5, and the water pump body is fixedly connected with the base 12 through the bolt 13. The drain valve 14 is used for plugging the drain port to provide convenience for quickly discharging water accumulated in the pump cavity during water pump maintenance, and the drain valve is located close to the base 12. The mechanical seal 15 is used for sealing the gap between the rotating shaft and the static shell. The permanent magnet synchronous motor 6 has a qualitative leap in efficiency compared with the conventional YE3 motor, because the permanent magnet is used to provide a magnetic field, and no excitation current is needed, so that the loss is reduced. Meanwhile, the stator and the rotor can keep magnetic potential synchronization during operation, the reactive current is reduced, the power factor and the efficiency are significantly improved, the power factor can reach 1, and this is an important reason why the efficiency is high. Furthermore, the design that the permanent magnet synchronous motor 6 directly drives the impeller 11 further improves the operation efficiency of the unit. Compared with the conventional single-stage pump adopting the YE3 asynchronous motor and having a coupling, the water pump has the advantages of simple structure, low energy consumption, small noise, long service life, and convenient maintenance.

[0029] Compared with the conventional single-stage pump adopting the YE3 asynchronous motor and having a coupling, the water pump has the advantages of simple structure, low energy consumption, small noise, long service life, and convenient maintenance.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, the changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A permanent-magnet high-efficiency single-stage pump, characterized by: The permanent magnet high-efficiency single-stage pump comprises a pump body, a pump cover, a motor shaft, a permanent magnet synchronous motor, a gas release valve, an impeller and a base; The pump cover and the pump body are detachably connected together, and the pump body is fixed on the base; a pressure tapping hole is arranged on a pump body drain port flange, and the gas release valve is arranged at a gas release hole position on a side edge of a pump cover and pump body connecting flange; a motor shaft of the water pump permanent magnet synchronous motor is directly connected with the impeller, and the pump cover and the permanent magnet synchronous motor are fixed together.

2. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: The pump cover and the pump body are fixedly connected through bolts, and an O-shaped sealing ring is arranged between the pump cover and the pump body for sealing.

3. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: The pump cover and the permanent magnet synchronous motor are fixed together through bolts.

4. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: A pair or two pairs of symmetrically arranged lifting lugs are arranged on the permanent magnet synchronous motor.

5. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: The drain port of the pump body is provided with a drain valve for plugging the drain port.

6. A permanent-magnet, high-efficiency, single-stage pump as claimed in claim 5, characterized in that: The drain valve is located close to the base.

7. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: The motor shaft of the water pump permanent magnet synchronous motor is connected with the impeller through a key and a fastening screw.

8. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: The pump body is fixed on the base through bolts.

9. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: A plug is arranged in the pressure tapping hole for plugging the pressure tapping hole.

10. The permanent-magnet, high-efficiency, single-stage pump of claim 1, wherein: A mechanical seal is arranged between the motor shaft and the housing.

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