Submersible motor convenient for replacing filter screen

Abstract

The submersible motor comprises a submersible motor body, an oil conveying pipeline is arranged on the outer wall of the submersible motor body, a fixed bearing is arranged at the position, close to the center of the bottom end of the submersible motor body, of the inner side of the oil conveying pipeline, and a coupling shaft core is installed on the inner side of the fixed bearing; a lubricating oil protection core is installed at one end of the coupling shaft core, an oil-submersible protection shell is arranged on the surface of the lubricating oil protection core, a filter screen inner core is arranged on the surface of the oil-submersible protection shell in a sleeving mode, and a limiting clamping block is fixedly arranged on the outer surface of the filter screen inner core; through the matching arrangement of the filter screen inner core and the outer-layer filter element, impurities such as fine sand, stone and dust entering the oil conveying pipeline in the long-time use process are effectively reduced, smooth oil conveying of the oil conveying pipeline is facilitated, and meanwhile the oil conveying working efficiency of the submersible motor is improved; the filter screen inner core can be conveniently disassembled, assembled and replaced by personnel according to requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a submersible motor facilitating the replacement of a filter screen. Background Art

[0002] A submersible motor refers to an electric motor that can work immersed in an oil well at a specified depth. It is generally a vertical three-phase cage-type induction motor, which forms a submersible electric pump with a multistage centrifugal pump and can be submerged in an oil well hundreds of meters to three thousand meters deep to continuously and reliably extract underground crude oil or well fluid.

[0003] However, during the oil pumping process of the submersible motor, the filter screen at the bottom oil inlet is single. During long-term use, fine sand, dust and other impurities will enter the inside of the oil delivery pipe and precipitate in the pipe, affecting the oil delivery efficiency of the submersible motor. Moreover, the filter screen at the bottom end of the oil delivery pipe is not easy to disassemble and replace. Therefore, we propose a submersible motor facilitating the replacement of a filter screen. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a submersible motor facilitating the replacement of a filter screen. During the oil pumping process of the submersible motor, through the combined setting of the inner core of the filter screen and the outer filter element, the entry of fine sand, dust and other impurities into the inside of the oil delivery pipe during long-term use is effectively reduced, which is beneficial to the smooth oil delivery of the oil delivery pipe. At the same time, the oil delivery working efficiency of the submersible motor is improved. Through the combined setting of the first steel wire brush head arranged on the surface of the outer filter element and the second steel wire brush head arranged on the bottom surface of the outer filter element, the entry of sand and impurities into the filter element oil inlet through the side oil inlet hole and the oil inlet hole of the oil inlet chassis is effectively reduced; through the combined setting of the limiting ring, the limiting block and the L-shaped card slot, it is convenient for personnel to disassemble, install and replace the inner core of the filter screen according to requirements.

[0005] To solve the above technical problems, the present utility model provides the following technical solution: A submersible motor facilitating filter screen replacement, comprising a submersible motor main body, an oil delivery pipeline is arranged on the outer wall of the submersible motor main body, a fixed bearing is arranged inside the oil delivery pipeline near the center of the bottom end of the submersible motor main body, a coupling shaft core is installed inside the fixed bearing, a lubricating oil protection core is installed at one end of the coupling shaft core, a submersible protection shell is arranged on the surface of the lubricating oil protection core, a filter screen inner core is sleeved on the surface of the submersible protection shell, a limiting block is fixedly arranged on the outer surface of the filter screen inner core, a protective outer shell is installed at the bottom end of the submersible motor main body, a limiting ring is arranged on the inner wall of the protective outer shell, an L-shaped card slot corresponding to the position of the limiting block is opened on the surface of the limiting ring, a central rotating shaft is installed at the center of the lubricating oil protection core, one end of the central rotating shaft is connected with the coupling shaft core, an outer layer filter element is arranged on the surface of the other end of the central rotating shaft, a first steel wire brush head is arranged on the outer surface of the outer layer filter element, a side oil inlet hole is opened on the bottom surface of the protective outer shell, the first steel wire brush head is inside the side oil inlet hole, an oil inlet hole bottom plate is arranged at the bottom end of the protective outer shell, a second steel wire brush head is arranged on one side of the bottom end of the outer layer filter element, and the second steel wire brush head is inside the oil inlet hole bottom plate.

[0006] As a preferred technical solution of the present utility model, five layers of filter elements are arranged inside the outer layer filter element, an oil passage hole partition layer is arranged between the five layers of filter elements, and the number of the arranged oil passage hole partition layers is five.

[0007] As a preferred technical solution of the present utility model, the first steel wire brush head is provided with four rings, the four-ring first steel wire brush head is evenly distributed on the outer surface of the outer layer filter element, the side oil inlet hole is opened on the bottom surface of the protective outer shell, the side oil inlet hole is provided with four rings, and the four-ring first steel wire brush head is inside the four-ring side oil inlet hole.

[0008] As a preferred technical solution of the present utility model, filter element oil inlet holes are evenly opened on the peripheral surface and both sides of the outer layer filter element.

[0009] As a preferred technical solution of the present utility model, the oil inlet hole bottom plate is jointly composed of a connecting support rod and a connecting ring, and the bottom end of the second steel wire brush head is inside the oil inlet hole of the oil inlet hole bottom plate.

[0010] As a preferred technical solution of the present utility model, an installation ring is arranged on the outer surface of one end of the protective outer shell away from the oil inlet hole bottom plate, installation holes are evenly opened on the surface of the installation ring, a thread groove is opened on the surface of the oil delivery pipeline, and the installation ring and the oil delivery pipeline are fixed by bolts.

[0011] Compared with the prior art, the beneficial effects that the present utility model can achieve are:

[0012] 1. During the oil pumping process of the submersible motor, through the combined setting of the inner core of the filter net and the outer filter element, the entry of impurities such as fine sand, stone dust, etc. into the interior of the oil transmission pipeline during long-term use is effectively reduced, which is beneficial to the smooth oil transmission of the oil transmission pipeline. At the same time, the oil transmission working efficiency of the submersible motor is improved. Through the combined setting of the first steel wire brush head arranged on the surface of the outer filter element and the second steel wire brush head arranged on the bottom surface of the outer filter element, the entry of sand and stone impurities into the filter element oil inlet hole through the side oil inlet hole and the oil inlet hole chassis of the oil inlet hole is effectively reduced; through the combined setting of the limit ring, the limit block and the L-shaped card slot, it is convenient for personnel to disassemble, install and replace the inner core of the filter net according to needs.

[0013] 2. Through the combined setting of the five-layer filter element and the five-layer oil through-hole partition layer, the oil filtering and passing effect of the outer filter element is better; through the combined setting of the first steel wire brush head and the side oil inlet hole, the oil inlet path of the submersible motor main body is wider; through the setting of the filter element oil inlet hole, the oil path is evenly distributed and enters the outer filter element for filtration; through the combined setting of the installation hole, the thread groove and the bolt, it is convenient to disassemble and assemble the protective shell. Brief Description of the Drawings

[0014] Figure 1 It is a schematic side sectional view structure of the present utility model.

[0015] Figure 2 It is a schematic bottom view structure of the oil inlet hole chassis of the present utility model.

[0016] Figure 3 For the present utility model Figure 1 The enlarged structure schematic diagram at A.

[0017] Figure 4 It is a schematic sectional view structure of the filter net of the present utility model.

[0018] Wherein: 1. Submersible motor main body; 2. Fixed bearing; 3. Submersible protection shell; 4. Lubricating oil protection core; 5. Coupling shaft core; 6. Inner core of the filter net; 7. Oil transmission pipeline; 8. Outer filter element; 9. First steel wire brush head; 10. Side oil inlet hole; 11. Oil through-hole partition layer; 12. Filter element oil inlet hole; 13. Central rotating shaft; 14. Second steel wire brush head; 15. Oil inlet hole chassis; 16. Connecting support rod; 17. Protective shell; 18. Installation ring; 19. Limit ring; 20. Limit block. Detailed Embodiment

[0019] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative labor all fall within the protection scope of the present utility model.

[0020] For the embodiments, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present utility model provides a submersible motor facilitating filter screen replacement, including a submersible motor main body 1. An oil transmission pipeline 7 is arranged on the outer wall of the submersible motor main body 1. A fixed bearing 2 is arranged inside the oil transmission pipeline 7 near the center of the bottom end of the submersible motor main body 1. A coupling shaft core 5 is installed inside the fixed bearing 2. A lubricating oil protection core 4 is installed at one end of the coupling shaft core 5. A submersible protection shell 3 is arranged on the surface of the lubricating oil protection core 4. A filter screen inner core 6 is sleeved on the surface of the submersible protection shell 3. A limit clamping block 20 is fixedly arranged on the outer surface of the filter screen inner core 6. A protective outer shell 17 is installed at the bottom end of the submersible motor main body 1. A limit ring 19 is arranged on the inner wall of the protective outer shell 17. An L-shaped card slot corresponding to the position of the limit clamping block 20 is formed on the surface of the limit ring 19. A central rotating shaft 13 is installed at the center of the lubricating oil protection core 4. One end of the central rotating shaft 13 is connected to the coupling shaft core 5. An outer layer filter element 8 is arranged on the surface of the other end of the central rotating shaft 13. A first steel wire brush head 9 is arranged on the outer surface of the outer layer filter element 8. A side oil inlet hole 10 is formed on the bottom surface of the protective outer shell 17. The first steel wire brush head 9 is inside the side oil inlet hole 10. An oil inlet hole chassis 15 is arranged at the bottom end of the protective outer shell 17. A second steel wire brush head 14 is arranged on one side of the bottom end of the outer layer filter element 8. The second steel wire brush head 14 is inside the oil inlet hole chassis 15. During the oil pumping process of the submersible motor, through the combined setting of the filter screen inner core 6 and the outer layer filter element 8, the entry of impurities such as fine sand, dust, etc. into the oil transmission pipeline 7 during long-term use is effectively reduced, which is beneficial to the smooth oil transmission of the oil transmission pipeline 7 and improves the oil transmission working efficiency of the submersible motor at the same time. Through the combined setting of the first steel wire brush head 9 arranged on the surface of the outer layer filter element 8 and the second steel wire brush head 14 arranged on the bottom surface of the outer layer filter element 8, the entry of sand and impurities into the oil inlet holes of the side oil inlet hole 10 and the oil inlet hole chassis 15 to block the filter element oil inlet hole 12 is effectively reduced. Through the combined setting of the limit ring 19, the limit clamping block 20 and the L-shaped card slot, it is convenient for personnel to disassemble, install and replace the filter screen inner core 6 according to needs.

[0021] As Figure 1As shown, there are five layers of filter elements inside the outer filter element 8, and an oil passage partition layer 11 is arranged between the five layers of filter elements. The number of oil passage partition layers 11 arranged is five. Through the combined setting of the five layers of filter elements and the five layers of oil passage partition layers 11, the oil filtering and passing effect of the outer filter element 8 is better.

[0022] As Figure 1 shown, the first steel wire brush head 9 is provided with four rings. The four-ring first steel wire brush head 9 is evenly distributed on the outer surface of the outer filter element 8. The side oil inlet hole 10 is opened on the bottom surface of the protective housing 17. The side oil inlet hole 10 is provided with four rings. The four-ring first steel wire brush head 9 is inside the four-ring side oil inlet hole 10. Through the combined setting of the first steel wire brush head 9 and the side oil inlet hole 10, the oil inlet path of the submersible motor main body 1 is wider.

[0023] As Figure 1 shown, the filter element oil inlet holes 12 are evenly opened on the peripheral surface and both sides of the outer filter element 8. By setting the filter element oil inlet holes 12, the oil path is evenly distributed into the outer filter element 8 for filtration.

[0024] As Figure 2 shown, the oil inlet hole chassis 15 is composed of a connecting support rod 16 and a connecting ring. The bottom end of the second steel wire brush head 14 is inside the oil inlet hole of the oil inlet hole chassis 15. Through the combined setting of the second steel wire brush head 14, the connecting support rod 16 and the connecting ring, the blockage of the oil inlet by sand and debris is effectively reduced.

[0025] As Figure 1 、 Figure 4 shown, an installation ring 18 is arranged on the outer surface of one end of the protective housing 17 away from the oil inlet hole chassis 15. Installation holes are evenly opened on the surface of the installation ring 18. Thread grooves are opened on the surface of the oil delivery pipeline 7. The installation ring 18 and the oil delivery pipeline 7 are fixed by bolts. Through the combined setting of the installation holes, the thread grooves and the bolts, the disassembly and assembly of the protective housing 17 are facilitated.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A submersible motor for facilitating replacement of a filter screen, comprising a submersible motor body (1), characterized in that: The outer wall of the submersible motor body (1) is provided with an oil pipeline (7), and a fixed bearing (2) is provided on the inner side of the oil pipeline (7) near the center of the bottom end of the submersible motor body (1). A coupling shaft core (5) is installed on the inner side of the fixed bearing (2), and a lubricating oil protection core (4) is installed on one end of the coupling shaft core (5). A submersible oil protection shell (3) is provided on the surface of the lubricating oil protection core (4), and a filter screen inner core (6) is sleeved on the surface of the submersible oil protection shell (3). A limit block (20) is fixedly provided on the outer surface of the filter screen inner core (6). A protective shell (17) is installed on the bottom end of the submersible motor body (1), and a limit ring (19) is provided on the inner wall of the protective shell (17). The surface of the limit ring (19) is provided with a limit block. The oil block (20) is provided with an L-shaped slot corresponding to the position of the oil block (20), a central rotating shaft (13) is installed at the center of the lubricating oil protection core (4), one end of the central rotating shaft (13) is connected to the coupling shaft core (5), the other end surface of the central rotating shaft (13) is provided with an outer filter element (8), the outer surface of the outer filter element (8) is provided with a first steel wire brush head (9), the bottom surface of the protective shell (17) is provided with a side oil inlet hole (10), the first steel wire brush head (9) is located inside the side oil inlet hole (10), the bottom end of the protective shell (17) is provided with an oil inlet bottom plate (15), the bottom side of the outer filter element (8) is provided with a second steel wire brush head (14), the second steel wire brush head (14) is located inside the oil inlet bottom plate (15).

2. A submersible motor for easy replacement of filter screen according to claim 1, characterized in that: Five layers of filter elements are arranged inside the outer filter element (8), oil-through hole partitions (11) are arranged between the five layers of filter elements, and the number of the oil-through hole partitions (11) is five.

3. The submersible motor with easy filter replacement according to claim 1, characterized in that: The first steel wire brush head (9) is provided with four rings, and the first steel wire brush heads (9) of the four rings are evenly distributed on the outer surface of the outer filter element (8), and the side oil inlet hole (10) is opened on the bottom surface of the protective shell (17), and the side oil inlet hole (10) is provided with four rings, and the first steel wire brush heads (9) of the four rings are located on the inner side of the four rings of the side oil inlet hole (10).

4. The submersible motor with easy filter replacement according to claim 1, characterized in that: The outer filter element (8) is evenly provided with filter element oil inlet holes (12) on the surrounding surface and both sides.

5. The submersible motor with easy filter replacement according to claim 1, characterized in that: The oil inlet bottom plate (15) is composed of a connecting support rod (16) and a connecting ring, and the bottom end of the second steel wire brush head (14) is located inside the oil inlet of the oil inlet bottom plate (15).

6. The submersible motor with easy filter replacement according to claim 1, characterized in that: A mounting ring (18) is provided on the outer surface of one end of the protective housing (17) away from the oil inlet bottom plate (15), mounting holes are evenly arranged on the surface of the mounting ring (18), thread grooves are arranged on the surface of the oil pipeline (7), and the mounting ring (18) is fixed to the oil pipeline (7) by bolts.

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