CN210949286U

CN210949286U - Oil sac structure of submersible deep well pump

Info

Publication number: CN210949286U
Application number: CN201921837763.6U
Authority: CN
Inventors: 刘明庆
Original assignee: Taizhou Xuanyuan International Trade Co ltd
Current assignee: Taizhou Xuanyuan International Trade Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-07
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an oil pocket structure of dive deep-well pump, belong to immersible pump spare part technical field, its technical scheme main points are, including motor casing, a pedestal, the bottom has oil pocket and the bearing frame of cavity, the base upper end is provided with first cyclic annular flange, its inner wall is hugged closely in the outer wall of first cyclic annular flange after first cyclic annular flange is located to oil pocket cover, the base lower extreme still is provided with the through-hole that accesss to the oil pocket cavity, there is the annular that radially outwards sets up on the outer wall of oil pocket lower extreme and keeps off the seat, the annular keeps off seat outer fringe department and is provided with the second cyclic annular flange, the bearing frame includes the bearing housing, be located the annular pedestal of bearing housing below and be used for connecting the two splice bar, the annular groove has been seted up to the lower extreme of annular pedestal, the back is located on the oil pocket to. The utility model discloses install in the motor after, can reduce the volume of motor relatively, not only the outward appearance wholeness is strong, but also can save some costs.

Description

Oil sac structure of submersible deep well pump

Technical Field

The utility model belongs to the technical field of immersible pump spare part, specificly indicate an oil pocket structure of dive deep-well pump.

Background

The oil bag is a device for adjusting the balance of internal and external pressure, and can ensure the normal operation of a motor in the submersible pump. Some current oil sacs are bulky, install in the motor after, can lead to the volume of motor also to increase thereupon to the length of whole immersible pump has been lengthened, not only the outward appearance is uncoordinated, but also has improved manufacturing cost, for example the chinese utility model patent (oil-filled formula immersible pump motor seal structure for well) that application number is CN201020165984.6, for this reason need improve oil sacs and its mounting structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists to the aforesaid, provide an oil pocket structure for diving deep-well pump, this oil pocket structrual installation can reduce the volume of motor relatively in the motor back, and not only the outward appearance wholeness is strong, but also can save some costs.

The purpose of the utility model is realized like this: the utility model provides an oil pocket structure of dive deep-well pump, wherein, has the oil pocket and the bearing frame of cavity including motor casing, base, bottom, the base upper end is provided with first annular flange, oil pocket cover is located its inner wall hugs closely behind the first annular flange in the outer wall of first annular flange, the base lower extreme still is provided with accesss to the through-hole of oil pocket cavity, the annular that has radial outside setting on the oil pocket lower extreme outer wall keeps off the seat, annular keeps off the seat periphery department and is provided with the annular flange of second, the bearing frame includes the bearing housing, is located the annular pedestal of bearing housing below and is used for connecting the joint bar of the two, annular groove has been seted up to the lower extreme of annular pedestal, annular pedestal cover is located back on the oil pocket, the annular flange of second inlays to be located in the annular groove.

By adopting the technical scheme, the bearing is arranged in the bearing sleeve on the bearing seat and is used for connecting the rotor of the motor, and the cavity in the annular seat body is used for embedding the oil supply bag, so that the length of the whole motor is effectively reduced; with the bearing frame by motor casing's bottom embedding, then install the oil pocket in the cavity of annular pedestal, keep off the seat through the annular, second annular flange and annular groove, make the oil pocket block internal at annular pedestal, then fix the oil pocket by the base again, first annular flange joint on the base is at the oil pocket inner wall, and the up end of base supports tightly on the annular keeps off the seat, motor casing's lower extreme supports tightly on the base, the through-hole on the base enters into the import in the oil pocket cavity for supplying water, with the internal and external pressure of accommodate motor, after the pedestal mounting finishes, fix the base through the bolt, the bolt passes the base, the annular keeps off the seat, the annular flange is at last to target in the bolt hole in the annular groove on the annular pedestal again.

The utility model discloses further set up to: the oil bag is of a stepped structure with the outer diameter gradually decreasing from bottom to top and is divided into a cylindrical lower end part, a cylindrical middle part and an inverted concave table-shaped upper end part, after the bearing seat is sleeved on the oil bag, the outer wall of the lower end part is tightly attached to the inner wall of the annular seat body, and gaps between the middle part and the upper end part and the bearing seat form a buffer cavity for outward expansion of the middle part and the upper end part.

By adopting the technical scheme, when external pressure is increased, the upper end part and the middle part of the oil bag extend to the periphery, and the volume of the oil cavity in the motor shell is reduced, so that the external pressure is reduced; when the internal pressure increases, the upper end portion and the middle portion of the oil bag are compressed inward, and the volume of the oil chamber in the motor housing increases, so that the internal pressure is reduced.

The utility model discloses further set up to: the upper end of the base is provided with a concave cavity which is opposite to the oil sac cavity.

Through adopting above-mentioned technical scheme, set up the reentrant in order to increase the volume of intaking of oil pocket cavity in base upper end.

The utility model discloses further set up to: the connecting ribs are obliquely arranged, one end of each connecting rib is connected to the outer wall of the bearing sleeve, the other end of each connecting rib is connected to the inner wall of the annular seat body, and the connecting ribs are multiple and distributed in sequence along the circumferential direction.

Through adopting above-mentioned technical scheme, set up the joint strength of a plurality of splice bars in order to improve bearing housing and annular pedestal.

The utility model discloses further set up to: the lower end of the bearing sleeve is provided with a bottom plate, and a circular hole for communicating the bearing sleeve and the oil bag is formed in the bottom plate.

The utility model discloses further set up to: the motor casing comprises a base body and is characterized in that an annular groove formed in the outer wall of the base body along the circumferential direction of the base body is formed in the outer wall of the base body, the annular groove is three and is distributed in sequence along the radial direction of the base body, a clamp spring is embedded into the annular groove at the lowest part, O-shaped sealing rings are embedded into two annular grooves at the upper part respectively, and the motor casing is sleeved on a bearing seat, and then the O-shaped sealing rings and the clamp spring are tightly attached to the inner wall of.

Through adopting above-mentioned technical scheme, set up the joint strength of jump ring in order to improve between annular pedestal and the motor casing, set up the gas tightness between O type sealing washer in order to improve annular pedestal and the motor casing.

The utility model discloses further set up to: the oil bag is made of nitrile rubber.

By adopting the technical scheme, the nitrile rubber has excellent oil resistance, wear resistance and air tightness.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

the reference numbers in the figures are: 1. a motor housing; 2. a base; 21. a first annular flange; 22. a through hole; 23. a concave cavity; 3. an oil pocket; 31. an annular baffle seat; 32. a second annular flange; 33. a lower end portion; 34. a middle portion; 35. an upper end portion; 4. a bearing seat; 41. a bearing housing; 411. a base plate; 412. a circular hole; 42. an annular base; 421. an annular groove; 422. a clamp spring; 423. an O-shaped sealing ring; 43. connecting ribs; 5. a buffer cavity.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

as shown in fig. 1, the oil sac structure of the submersible deep well pump comprises a motor shell 1, a base 2, an oil sac 3 with a cavity at the bottom and a bearing seat 4, wherein the oil sac 3 is made of nitrile rubber, wherein, base 2 upper end is provided with first annular flange 21, its inner wall hugs closely in the outer wall of first annular flange 21 behind the first annular flange 21 is located to oil bag 3 cover, base 2 lower extreme still is provided with the through-hole 22 that leads to oil bag 3 cavity, have the annular that radially outwards sets up on the outer wall of oil bag 3 lower extreme and keep off seat 31, annular keeps off seat 31 outer fringe department and is provided with second annular flange 32, bearing frame 4 includes bearing housing 41, be located the annular pedestal 42 of bearing housing 41 below and be used for connecting the splice bar 43 of the two, annular groove 421 has been seted up to the lower extreme of annular pedestal 42, back on oil bag 3 is located to annular pedestal 42 cover, second annular flange 32 inlays and locates in the annular groove 421.

A bearing is arranged in a bearing sleeve 41 on the bearing seat 4 and is used for connecting a rotor of the motor, and a cavity in the annular seat body 42 is used for embedding the oil supply bag 3, so that the length of the whole motor is effectively reduced; with bearing frame 4 by the bottom embedding of motor casing 1, then install oil pocket 3 in the cavity of annular pedestal 42, keep off seat 31 through the annular, second annular flange 32 and annular groove 421, make oil pocket 3 block in annular pedestal 42, then fix oil pocket 3 by base 2, first annular flange 21 joint on base 2 is at oil pocket 3 inner wall, and the up end of base 2 supports tightly on annular keeps off seat 31, the lower extreme of motor casing 1 supports tightly on base 2, through-hole 22 on base 2 is the import that enters into oil pocket 3 cavity for supplying water, with the internal and external pressure of adjusting motor, after base 2 installs and finishes, fix base 2 through the bolt, the bolt passes base 2, annular keeps off seat 31, second annular flange 32 is at last to the bolt hole in the annular groove 421 on annular pedestal 42 again.

The oil bag 3 is of a stepped structure with the outer diameter gradually decreasing from bottom to top, and is divided into a cylindrical lower end part 33, a cylindrical middle part 34 and an inverted concave table-shaped upper end part 35, after the bearing seat 4 is sleeved on the oil bag 3, the outer wall of the lower end part 33 is tightly attached to the inner wall of the annular seat body 42, and a buffer cavity 5 for outward expansion of the middle part 34 and the upper end part 35 is formed by the gaps between the middle part 34 and the upper end part 35 and the bearing seat 4.

When the external pressure is increased, the upper end part 35 and the middle part 34 of the oil bag 3 extend to the periphery, and the volume of an oil cavity in the motor shell 1 is reduced, so that the external pressure is reduced; when the internal pressure increases, the upper end portion 35 and the intermediate portion 34 on the oil bladder 3 are compressed inward, and the volume of the oil chamber in the motor housing 1 increases, thereby decreasing the internal pressure.

The utility model discloses further set up to, cavity 23 has been seted up to base 2 upper end, and cavity 23 is just to 3 cavitys of oil pocket to the volume of intaking of 3 cavitys of increase oil pocket.

The utility model discloses further set up to, the slope of splice bar 43 sets up, and its one end is connected on the outer wall of bearing housing 41, and the other end is connected on the inner wall of annular pedestal 42, and splice bar 43 has a plurality ofly and distributes along the circumference direction in proper order. A plurality of connecting ribs 43 are provided to improve the connecting strength of the bearing housing 41 and the annular seat body 42.

The utility model discloses further set up as, the lower extreme of bearing housing 41 is provided with bottom plate 411, offers the circular port 412 that is linked together bearing housing 41 and oil bag 3 on the bottom plate 411.

The utility model discloses further set up to, have the ring channel of seting up along its circumference direction on the outer wall of pedestal, the ring channel has three and distributes in proper order along the radial direction of pedestal, and the below ring channel is embedded to be equipped with jump ring 422, inlays respectively in two ring channels of top to be equipped with O type sealing washer 423, and back, two O type sealing washers 423 and jump ring 422 are hugged closely in motor casing 1's inner wall on bearing frame 4 are located to motor casing 1 cover. The snap spring 422 is provided to improve the connection strength between the annular seat 42 and the motor housing 1, and the O-ring 423 is provided to improve the air tightness between the annular seat 42 and the motor housing 1.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an oil pocket structure of deep-well pump dives which characterized in that: the motor comprises a motor shell (1), a base (2), an oil bag (3) with a cavity at the bottom and a bearing seat (4), wherein a first annular flange (21) is arranged at the upper end of the base (2), the inner wall of the oil bag (3) is tightly attached to the outer wall of the first annular flange (21) after the first annular flange (21) is sleeved on the oil bag (3), a through hole (22) leading to the cavity of the oil bag (3) is further formed in the lower end of the base (2), an annular retaining seat (31) is radially and outwards arranged on the outer wall of the lower end of the oil bag (3), a second annular flange (32) is arranged at the outer edge of the annular retaining seat (31), the bearing seat (4) comprises a bearing sleeve (41), an annular seat body (42) positioned below the bearing sleeve (41) and a connecting rib (43) used for connecting the bearing sleeve and the annular seat body, an annular, the annular seat body (42) is sleeved on the oil bag (3), and then the second annular flange (32) is embedded in the annular groove (421).

2. The oil bladder structure of a submersible deep well pump according to claim 1, wherein: the oil bag (3) is of a stepped structure with the outer diameter gradually decreasing from bottom to top and is divided into a cylindrical lower end part (33), a cylindrical middle part (34) and an inverted concave table-shaped upper end part (35), after the bearing seat (4) is sleeved on the oil bag (3), the outer wall of the lower end part (33) is tightly attached to the inner wall of the annular seat body (42), and a buffer cavity (5) for the middle part (34) and the upper end part (35) to expand outwards is formed in a gap between the middle part (34) and the upper end part (35) and the bearing seat (4).

3. The oil bladder structure of a submersible deep well pump according to claim 1, wherein: a concave cavity (23) is formed in the upper end of the base (2), and the concave cavity (23) is right opposite to the cavity of the oil bag (3).

4. The oil bladder structure of a submersible deep well pump according to claim 1, wherein: the connecting ribs (43) are obliquely arranged, one end of each connecting rib is connected to the outer wall of the bearing sleeve (41), the other end of each connecting rib is connected to the inner wall of the annular seat body (42), and the connecting ribs (43) are multiple and are distributed in sequence along the circumferential direction.

5. The oil bladder structure of a submersible deep-well pump according to claim 2, characterized in that: the lower extreme of bearing housing (41) is provided with bottom plate (411), set up on bottom plate (411) with bearing housing (41) with circular port (412) that oil bag (3) are linked together, the up end of upper end portion (35) still is provided with the baffle that upper end portion (35) cover after outwards expanding fits on circular port (412).

6. The oil bladder structure of a submersible deep well pump according to claim 1, wherein: have the ring channel of seting up along its circumference direction on the outer wall of annular pedestal (42), the ring channel has threely and follows the radial direction of annular pedestal (42) distributes in proper order, the below the ring channel is embedded to be equipped with jump ring (422), inlays respectively in two ring channels of top and is equipped with O type sealing washer (423), motor casing (1) cover is located back, two on bearing frame (4) O type sealing washer (423) and jump ring (422) hug closely in the inner wall of motor casing (1).

7. The oil bladder structure of a submersible deep well pump according to claim 1, wherein: the oil bag (3) is made of nitrile rubber.