CN214464956U

CN214464956U - Long-life submersible pump

Info

Publication number: CN214464956U
Application number: CN202120366410.3U
Authority: CN
Inventors: 杜骅
Original assignee: Chuanben Water Pump Suzhou Co ltd
Current assignee: Chuanben Water Pump Suzhou Co ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-10-22
Anticipated expiration: 2031-02-09

Abstract

The utility model provides a immersible pump of long-life, including the pump body, a motor for driving the pump body, set up the sealed chamber between motor casing and pump body casing, run through the motor shaft in sealed chamber, the cover is located on the motor shaft and is located the mechanical seal between motor casing and the pump body casing, the lubricator on the mechanical seal is located to the cover, the lubricator is fixed in on the pump body casing, the inlet port of introducing lubricating oil is seted up to the lubricator lower part, the lubricator includes the lubricator barrel, form clearance D between lubricator barrel and the mechanical seal. The utility model discloses a lubricator starts at the water pump, and when the axle was rotatory at a high speed, lubricating oil can get into between lubricator and the mechanical seal from this lubricator bottom trompil department to provide the necessary lubrication of mechanical seal, prolong mechanical seal's life, the lubricator inner wall is smooth, and the clearance that forms between lubricator and the mechanical seal is less, and lubricating oil can reach the maximum utilization ratio of lubricating oil, has reduced the cost.

Description

Long-life submersible pump

Technical Field

The utility model particularly relates to a immersible pump of long service life.

Background

The mechanical seals of submersible pumps require oil for lubrication and cooling. It is conventional practice to add a certain amount of lubricating oil to the mechanical seal oil chamber. However, when the oil amount is slowly lost, the mechanical seal is easily worn due to insufficient lubrication, so that the mechanical seal is damaged and the motor is burnt.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a immersible pump of long service life.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a immersible pump of long-life, includes the pump body, is used for the motor of driving pump body, sets up sealed chamber between motor casing and the pump body casing, runs through rotatable motor shaft, the cover in sealed chamber are located on the motor shaft and lie in motor casing with mechanical seal between the pump body casing, still locate including the cover lubricator on the mechanical seal, the lubricator is fixed in on the pump body casing, the inlet port of introducing lubricating oil is seted up to the lubricator lower part, the lubricator is including the lubricator barrel that has cylinder inner circle face, the lubricator barrel with form clearance D between the mechanical seal.

In certain embodiments, the gap D is between 0.5mm and 4 mm.

In some embodiments, the lubricator further comprises a connecting seat located at the lower part of the lubricator cylinder, the lubricator cylinder and the connecting seat are integrally formed, a fixing seat is arranged on the pump body shell, and the connecting seat is sleeved and fixed on the fixing seat.

In some embodiments, the oil inlet hole is provided on the connection seat.

In some embodiments, an oil outlet gap is formed between the lubricator cylinder and the motor housing proximate to a seam of an upper stationary ring and an upper rotating ring of the mechanical seal.

In some embodiments, the oil inlet hole is a vortex guide hole which is compliant with the rotation direction of the motor shaft.

In some embodiments, one side of the oil inlet hole has a vortex finder protrusion that facilitates entry of lubricating oil into the oil inlet hole.

In some embodiments, the connecting seat is provided with a mounting positioning piece for facilitating mounting positioning.

The scope of the present invention is not limited to the technical solutions formed by specific combinations of the above technical features, and other technical solutions formed by arbitrary combinations of the above technical features or equivalent features should be covered. For example, the above features and the technical features (but not limited to) having similar functions disclosed in the present application are mutually replaced to form the technical solution.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses a lubricator starts at the water pump, when the axle is high-speed rotatory, lubricating oil introduces through lubricator lower part inlet port and rises, the inner wall of lubricator barrel is the smooth surface, and with the less clearance that forms between the mechanical seal, thereby use less lubricating oil, just be enough to with whole mechanical seal from the whole parcel that makes progress down, satisfy mechanical seal necessary lubrication from top to bottom, reduce the friction and reach refrigerated effect as far as possible, lubricating oil has reached the maximum utilization ratio, thereby extension mechanical seal's life.

Drawings

FIG. 1 is a schematic view of a part of the structure of a submersible pump;

FIG. 2 is a schematic cross-sectional view of the lubricator;

wherein 1, a pump body shell; 11. a fixed seat; 2. a motor housing; 3. sealing the cavity; 4. a motor shaft; 5. mechanical sealing; 6. a lubricator; 61. a lubricator cylinder; 62. an oil inlet hole; 63. a connecting seat; 64. a vortex flow guide projection; 65. and installing a positioning piece.

Detailed Description

The long-life submersible pump shown in the attached figure 1 comprises a pump body, a motor for driving the pump body, a motor shell 2 of the motor, a pump body shell 1 of the pump body, a sealing cavity 3 arranged between the motor shell 2 and the pump body shell 1, a rotatable motor shaft 4 penetrating through the sealing cavity 3, a mechanical seal 5 sleeved on the motor shaft 4 and located between the motor shell 2 and the pump body shell 1, wherein the mechanical seal 5 generally comprises an upper fixing ring for preventing oil from entering the inside of the motor, a lower fixing ring for preventing water from entering the sealing cavity, an upper rotary ring connected between the upper fixing ring and the lower fixing ring, a spring and a lower rotary ring.

In the rotation process of the motor shaft, the mechanical seal 5 is easily abraded due to friction heating under the condition of no lubricating oil lubrication between the upper fixing ring and the upper rotating ring and between the lower fixing ring and the lower rotating ring, so that the mechanical seal 5 needs to be lubricated to reduce friction for cooling.

In this embodiment, the mechanical seal 5 is provided with the lubricator 6 in a sleeved manner, and the lubricator 6 is fixed to the pump body housing 1. The lubricator 6 comprises a lubricator cylinder 61 with a cylindrical inner ring surface, a connecting seat 63 positioned at the lower part of the lubricator cylinder 61, and the lubricator cylinder 61 and the connecting seat 63 are integrally formed. The pump body casing 1 is provided with a fixed seat 11, and the connecting seat 63 is sleeved and fixed on the fixed seat 11. Connecting seat 63 is provided with oil inlet 62 for introducing lubricating oil. A gap D is formed between the lubricator cylinder 61 and the mechanical seal 5.

When the immersible pump starts, when the axle is rotatory at a high speed, lubricating oil is introduced through connecting seat 63 inlet port 62 and is risen, the inner wall of lubricator barrel is the smooth surface, and with the less clearance that forms between the mechanical seal, thereby use less lubricating oil, just be enough with whole mechanical seal from the whole parcel that makes progress down, between the solid fixed ring of upper portion and the upper portion gyration ring of mechanical seal 5 promptly, between the solid fixed ring of lower part and the lower part gyration ring, all reach lubricated effect, reduce the friction and reach refrigerated effect as far as possible, lubricating oil has reached maximum utilization ratio, thereby extension mechanical seal's life.

The inner wall of the lubricator cylinder body is a smooth surface, a gap formed between the lubricator and the mechanical seal is small, lubricating oil can rise along with the rotation of the motor shaft 4, the maximum utilization rate of the lubricating oil is achieved, and the cost is reduced.

An oil outlet gap is formed between the lubricator cylinder 61 and the motor shell 2, and the oil outlet gap is close to the joint of the upper fixing ring and the upper rotating ring of the mechanical seal, so that when lubricating oil rises and overflows from the oil outlet gap, the lubricating and cooling of the joint of the upper fixing ring and the upper rotating ring can be met.

As shown in fig. 2, the oil inlet 62 is a vortex guide hole conforming to the rotation direction of the motor shaft 4, one side of the oil inlet 62 is provided with a vortex guide protrusion 64 for facilitating the lubricating oil to enter the oil inlet 62, and the lubricating oil flows along the rotation direction of the motor shaft 4 after entering the vortex guide hole, so that the lubricating oil can enter the mechanical seal 5 conveniently.

As shown in fig. 2, the connecting base 63 has a positioning member 65 for easy positioning.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a long-life immersible pump, includes the pump body, is used for the motor of driving pump body, sets up sealed chamber (3) between motor casing (2) and pump body casing (1), runs through rotatable motor shaft (4) in sealed chamber (3), the cover is located on motor shaft (4) and be located motor casing (2) with mechanical seal (5) between pump body casing (1), its characterized in that: the lubricating device is characterized by further comprising a lubricator (6) sleeved on the mechanical seal (5), wherein the lubricator (6) is fixed on the pump body shell (1), an oil inlet hole (62) for introducing lubricating oil is formed in the lower portion of the lubricator (6), the lubricator (6) comprises a lubricator cylinder body (61) with a cylindrical inner ring surface, and a gap D is formed between the lubricator cylinder body (61) and the mechanical seal (5).

2. A long-life submersible pump according to claim 1, characterized in that: the clearance D is between 0.5mm and 4 mm.

3. A long-life submersible pump according to claim 1, characterized in that: the lubricator (6) further comprises a connecting seat (63) located at the lower portion of the lubricator barrel (61), the lubricator barrel (61) and the connecting seat (63) are integrally formed, a fixing seat (11) is arranged on the pump body shell (1), and the connecting seat (63) is sleeved and fixed on the fixing seat (11).

4. A long-life submersible pump according to claim 3, wherein: the oil inlet hole (62) is formed in the connecting seat (63).

5. A long-life submersible pump according to claim 3, wherein: an oil outlet gap is formed between the lubricator cylinder (61) and the motor shell (2), and the oil outlet gap is close to the joint of the upper fixing ring and the upper rotating ring of the mechanical seal.

6. A long-life submersible pump according to claim 1, characterized in that: the oil inlet hole (62) is a vortex flow guide hole which follows the rotation direction of the motor shaft (4).

7. A long-life submersible pump according to claim 6, characterized in that: one side of the oil inlet hole (62) has a swirl flow guide protrusion (64) that helps the lubricating oil to enter the oil inlet hole (62).

8. A long-life submersible pump according to claim 3, wherein: the connecting seat (63) is provided with a mounting positioning piece (65) which is convenient for mounting and positioning.