CN219268606U

CN219268606U - Work frequency motor for pump

Info

Publication number: CN219268606U
Application number: CN202320276654.1U
Authority: CN
Inventors: 钟裕民
Original assignee: Taizhou Zhongwei Industry And Trade Co ltd
Current assignee: Taizhou Zhongwei Industry And Trade Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-27
Anticipated expiration: 2033-02-22

Abstract

The utility model provides an industrial frequency motor for a pump, and belongs to the technical field of machinery. The problem that the service life of the vulnerable part of the existing industrial frequency motor for the pump is end and maintenance is frequent is solved. The industrial frequency motor for the pump comprises a pump body, a motor end cover and a motor rear end cover, wherein a pump shaft of the pump body is fixedly connected with a motor rotating shaft, the motor end cover is arranged at the right end of the motor, the motor rear end cover is arranged at the left end of the motor, and the motor end cover and the side face of the motor rear end cover are arranged on the motor through threaded connection. The motor shaft passes through the motor rear end cover, the motor shaft tail end is fixedly provided with a heat dissipation fan blade through a fastening bolt, the heat dissipation fan blade and the motor shaft are connected and synchronously rotate through a flat key, a fan cover is sleeved outside the heat dissipation fan blade, a vent is formed in the fan cover to keep air circulation, a plurality of cooling fins are distributed on the surface of the motor, the fan cover can cover the cooling fins, and the fan cover and the cooling fins form a wind gap structure. The industrial frequency motor for the pump has the advantages of long service life and no need of frequent maintenance.

Description

Work frequency motor for pump

Technical Field

The utility model belongs to the technical field of electrical equipment, relates to a motor, and in particular relates to an industrial frequency motor for a pump.

Background

The power frequency motor is an alternating current motor with constant current frequency and is divided into a power frequency synchronous motor and a power frequency asynchronous motor. The synchronous motor is a common alternating current motor and is characterized in that: in steady state operation, there is a constant relationship between the rotational speed of the rotor and the grid frequency.

The industrial frequency synchronous motor has the defects of complex structure and high production cost, and in order to change the defects, the industrial frequency motor for the pump is proposed to simplify the motor structure, reduce the production cost and prolong the service life of the industrial frequency motor.

However, the pump industrial frequency motor still has the following defects: because the motor is used for radiating, the radiating fan blades are arranged in the motor, and the bearing is arranged in the radiating direction of the fan blades, in order to ensure that the rotating shaft can rotate relative to the bearing, the bearing is prevented from being damaged due to friction of the rotating shaft, and the inner ring of the bearing is coated with lubricating grease. When the fan blades radiate heat, heat generated by the motor can pass through the bearing along with air flow, lubricating grease in the bearing absorbs heat and liquefies, liquid can flow out along a gap between the bearing and the rotating shaft, and when the lubricating grease between the bearing and the rotating shaft is rare, the bearing and the surface of the rotating shaft can directly rub, so that the bearing is damaged, the rotating shaft is worn, and the service life of the motor is reduced; when the heat dissipation, the inside air of the motor is communicated with the outside, the tightness is poor, dust brought by the outside air is easy to deposit inside the motor, the operation efficiency of the motor is affected, frequent maintenance and ash removal are needed, and the maintenance cost is high.

In the prior art, there is a pump work frequency motor in chinese patent [ patent No.: 202022880671.5: the motor rotor shaft is hollow, and the motor rotor shaft sleeve is established on the pump body pump shaft, connects on the motor stator assembly in the motor, and the hot air flow that the heat dissipation fan blade drove is through the bearing, and the grease in the bearing absorbs heat liquefaction and runs off, causes bearing and motor shaft direct friction, and external air circulates in the motor simultaneously, and the leakproofness is not good, and easy deposition needs frequent maintenance, and the maintenance cost is high.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a pump work frequency motor which is provided with fan blades arranged outside the motor and dissipates heat through cooling fins.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a pump is with industrial frequency motor, includes pump body, motor end cover and motor rear end cover, its characterized in that: the pump shaft of the pump body is fixedly connected with the motor rotating shaft, the motor end cover is arranged at the right end of the motor, the motor rear end cover is arranged at the left end of the motor, the motor rotating shaft penetrates out of the motor rear end cover and is provided with heat dissipation blades at the tail end, a fan cover is sleeved outside the heat dissipation blades, a plurality of cooling fins are distributed on the surface of the motor, the cooling fins can be covered by the fan cover, and an air port structure is formed by the fan cover and the cooling fins.

In the industrial frequency motor for the pump, the screw hole is formed in the tail end of the motor rotating shaft, the heat dissipation fan blade is fixedly arranged at the tail end of the motor rotating shaft through the fastening bolt, and the gasket is additionally arranged between the fastening bolt and the heat dissipation fan blade.

In the industrial frequency motor for the pump, the edge of the motor end cover is provided with the radial protrusion I, the axial surface of the radial protrusion I is provided with the screw hole, the motor rear end cover is provided with the radial protrusion II, and the axial surface and the radial surface of the radial protrusion II are provided with the screw holes.

In the industrial frequency motor for the pump, the vent holes are formed in the surface of the fan cover, and the straight grooves are formed in the side face of the fan cover.

In the above-mentioned pump industrial frequency motor, the motor shaft is provided with a groove, a flat key is arranged in the groove, and the heat dissipation fan blade is internally provided with a through groove matched with the flat key.

Compared with the prior art, the utility model has the advantages that: the cooling fins are additionally arranged on the surface of the motor, the cooling fan blades are moved to the outside of the motor to drive air to flow through the cooling fins, and heat generated in the motor is dispersed into the air through the cooling fins, so that the original mode of circularly cooling by manufacturing airflow through the cooling fan blades is changed, meanwhile, the bearing is not positioned in the cooling direction of the motor, the lubrication grease provided in the bearing is ensured not to be heated and liquefied and lost, and the service life of the motor is prolonged; strengthen the leakproofness, reduce the interior deposition of motor, prevent too much deposition and influence the work efficiency of motor, also reduced the maintenance frequency of motor, reduced maintenance cost.

Drawings

FIG. 1 is a perspective view of a pump work frequency motor;

FIG. 2 is an exploded view of a pump motor;

FIG. 3 is a schematic view of the structure of a fan guard;

FIG. 4 is a schematic view of the pump body;

FIG. 5 is a schematic view of the structure of the rear end cover of the motor;

in the figure, 1, a pump body; 2. a motor; 2a, radiating fins; 3. a motor end cover; 31. radial protrusion I; 311. the 1 st screw hole; 4. a motor rear end cover; 41 radial protrusions II; 411. the 2 nd screw hole; 412. a 3 rd screw hole; 5. a motor shaft; 5a, a 4 th screw hole; 6. radiating fan blades; 7. a fan cover; 8a, a ventilation hole; 9. a straight groove; 10. a gasket; 11. a flat key; 12. a groove; 13. a through groove; 14. and a tuyere.

Description of the embodiments

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1 and 2, the present utility model can be implemented by the following technical schemes: the utility model provides a pump is with industrial frequency motor, including the pump body 1, motor 2, motor end cover 3 and motor rear end cover 4, pump body 1 pump shaft links firmly with motor shaft 5, motor end cover 3 is installed to motor 2 right-hand member, motor rear end cover 4 is installed to motor 2 left end, motor shaft 5 wears out motor rear end cover 4 and end-to-end mounting has heat dissipation fan blade 6, heat dissipation fan blade 6 dustcoat fan housing 8, motor 2 surface has laid a plurality of fin 2a that transverse arrangement placed.

Working principle of the work frequency motor for the pump: after the motor 2 is communicated with a power supply, the stator in the motor 2 is electrified to generate an electromagnetic field, and the magnetic field drives the motor rotating shaft 5 to rotate, because one end of the motor rotating shaft 5 is sleeved on the pump shaft of the pump body 1, the pump body 1 keeps the rotating speed of the motor rotating shaft 5 constant and has an upper limit, and the rotating speed reaches the standard of a power frequency motor; meanwhile, the heat dissipation fan blade 6 fixedly arranged at the tail end of the motor rotating shaft 5 rotates along with the motor rotating shaft 5 to drive the inside of the fan cover 8 to manufacture local low air pressure in the fan cover 8, so that outside air forms air flow to flow through the heat dissipation fins 2a, heat on the heat dissipation fins 2a is taken away, and the heat dissipation effect is achieved in a circulating and reciprocating mode.

The industrial frequency motor for the pump has the advantages that: the heat dissipation fan blade 6 is moved from the inside of the motor 2 to the outside of the motor 2, and the heat dissipation fin 2a is additionally arranged on the shell of the motor 2, so that compared with the parts in the motor 2, the heat is more easily conducted to the shell of the motor 2 and the heat dissipation fin 2a. The radiating fins 2a are used for radiating, so that the original mode of guiding the air inside and outside the motor 2 to accelerate circulation and radiating through the radiating fan blades 6 is changed, the tightness of the motor 2 is enhanced, dust accumulation in the motor 2 is reduced, the working efficiency of the motor 2 is prevented from being influenced by excessive dust accumulation, the shutdown ash removal frequency of the motor 2 is reduced, and the maintenance cost is reduced; meanwhile, the heat absorbed by the lubricating grease in the bearing is insufficient to liquefy the lubricating grease, so that the bearing and the motor rotating shaft 5 are lubricated and relatively rotate, and the service life of the motor 2 is prolonged.

Further explaining, as shown in fig. 2 and 4, the end of the motor rotating shaft 5 is provided with a 4 th screw hole 5a, the heat dissipation fan blade 6 is installed at the end of the motor rotating shaft 5, the fastening bolt 7 penetrates through the heat dissipation fan blade 6 and is inserted into the 4 th screw hole 5a, the fastening bolt 7 is in threaded fit with the internal thread of the 4 th screw hole 5a, the heat dissipation fan blade 6 is fixed at the end of the motor rotating shaft 5, and a gasket 10 is installed between the fastening bolt 7 and the heat dissipation fan blade 6. The fastening bolt 7 is connected with the 4 th screw hole 5a through threads, the heat dissipation fan blade 6 is fixed at the tail end of the motor rotating shaft 5, and the heat dissipation fan blade 6 is prevented from being axially displaced by vibration generated when the motor 2 runs, so that the heat dissipation effect is prevented from being influenced; and a gasket 10 is additionally arranged between the fastening bolt 7 and the radiating fan blade 6, and the gasket 10 disperses the pressure applied by the fastening bolt 7 to the radiating fan blade 6 to protect the surface of the radiating fan blade 6 from being worn.

As shown in fig. 1, 2 and 5, a second radial protrusion 41 is provided on the motor rear end cover 4, a 2 nd screw hole 411 and a 3 rd screw hole 412 are respectively provided on an axial surface and a radial surface of the second radial protrusion 41, a first radial protrusion 31 is provided on the motor end cover 3, and a 1 st screw hole 311 is provided on an axial surface of the first radial protrusion 31. After the motor end cover 3 and the motor rear end cover 4 are installed on the motor 2, screws are inserted into the 1 st screw hole 311 and the 2 nd screw hole 411 for installation, and screws corresponding to the 3 rd screw hole 412 are required to be inserted into the 3 rd screw hole 412 through the side surface of the fan cover 8. The 2 nd screw hole 411 and the 3 rd screw hole 412 are arranged on the radial protrusion 41, so that the structure is compact, and the production cost is reduced; the axial surface of the radial protrusion I31 is provided with a 1 st screw hole 311, and a screw is inserted into the 1 st screw hole 311 to mount and fix the motor end cover 3; radial protrusions are arranged on the motor end cover 3 and the motor rear end cover 4, and when the motor end cover 3 and the motor rear end cover 4 are installed on the motor 2, positioning and supporting functions are achieved, so that installation is convenient and fast.

As shown in fig. 3, the fan cover 8 has a vent hole 8a provided in an end surface thereof and a straight groove 9 provided in a side surface thereof. The vent holes 8a are formed to enable the air flow blown out by the heat dissipation fan blades 6 to be discharged through the vent holes 8a, local low air pressure is formed in the fan cover 8, the air flow is promoted to enter the fan cover 8, and when the air flow passes through the heat dissipation fins 2a, heat on the heat dissipation fins 2a is taken away; the straight groove 9 is formed, so that a screw can penetrate through the side surface of the fan cover 8 and is inserted into the 3 rd screw hole 412, meanwhile, the straight groove 9 has a certain length, the fan cover 8 can be finely adjusted by taking the motor rotating shaft 5 as a central shaft to rotate during installation, and the fan cover 8 can be still installed and fixed when the position of the 3 rd screw hole 412 of the motor rear end cover 4 is deviated.

As shown in fig. 2 and 5, a groove 12 is formed at the tail end of the motor rotating shaft 5, a flat key 11 is installed in the groove 12, and a through groove 13 matched with the flat key 11 is formed on the heat dissipation fan blade 6. The flat key 11 is clamped in the groove 12, when the motor rotating shaft 5 rotates, the flat key 11 is extruded through the two side surfaces of the flat key 11, the groove 12 and the through groove 13 to transmit torque, after the motor 2 stops working, the flat key 11, the groove 12 and the through groove 13 are connected to play a buffering role, so that the fastening effect on the cooling fan blade 6 is eliminated due to the fact that the fastening bolt 7 cannot be influenced by the reaction force, the radial connection is formed between the cooling fan blade 6 and the motor rotating shaft 5 due to the cooperation of the flat key 11 and the through groove 13, the radial connection is formed between the cooling fan blade 6 and the motor rotating shaft 5, and the cooling fan blade 6 is fixed on the motor rotating shaft 5 due to the cooperation of the flat key 11 and the through groove 13.

As shown in fig. 2, the fan cover 8 can cover the cooling fin 2a to form the air opening 14, and the air opening 14 forms a narrow pipe effect, so that the initial speed of the air flow leaving the fan cover 8 is increased, the air flow circulation is accelerated, more air is caused to contact the cooling fin 2a, and the cooling effect is enhanced.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although various terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The utility model provides a pump is with industrial frequency motor, includes pump body (1), motor (2), motor end cover (3) and motor rear end cover (4), its characterized in that: pump shaft and motor shaft (5) of pump body (1) link firmly, motor end cover (3) are installed to motor (2) right-hand member, motor rear end cover (4) are installed to motor (2) left end, motor shaft (5) wear out motor rear end cover (4) and end-to-end mounting have heat dissipation fan blade (6), heat dissipation fan blade (6) overcoat is equipped with fan cover (8), motor (2) surface distribution has a plurality of fin (2 a), fin (2 a) can be covered to fan cover (8), and wind gap (14) structure is constituteed to fan cover (8) and fin (2 a).

2. The industrial frequency motor for the pump according to claim 1, wherein a screw hole is formed at the tail end of the motor rotating shaft (5), the heat dissipation fan blade (6) is fixedly arranged at the tail end of the motor rotating shaft (5) through a fastening bolt (7), and a gasket (10) is additionally arranged between the fastening bolt (7) and the heat dissipation fan blade (6).

3. The industrial frequency motor for the pump according to claim 1, wherein the edge of the motor end cover (3) is provided with a radial protrusion I (31), the axial surface of the radial protrusion I (31) is provided with a screw hole, the motor rear end cover (4) is provided with a radial protrusion II (41), and the axial surface and the radial surface of the radial protrusion II (41) are provided with screw holes.

4. The industrial frequency motor for the pump according to claim 1, wherein the surface of the fan cover (8) is provided with a vent hole (8 a), and the side surface of the fan cover (8) is provided with a straight groove (9).

5. The industrial frequency motor for the pump according to claim 1, wherein the motor rotating shaft (5) is provided with a groove (12), a flat key (11) is arranged in the groove (12), and the heat dissipation fan blade (6) is internally provided with a through groove (13) matched with the flat key (11).