Pump body lubricating structure of pipeline pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a pipeline pump body lubricating structure which comprises a pump body main body, an upper cover and an impeller, the pump body main body is provided with a rotating cavity and a liquid inlet channel, a liquid outlet channel is formed in the cavity wall of the rotating cavity, and the impeller is rotationally embedded in the rotating cavity; the upper cover is connected to the pump body and covers a notch of the mounting groove, a driving hole is formed in the upper cover and used for allowing a motor output shaft to penetrate through to drive the impeller to rotate, the upper cover is connected with an abutting ring, the abutting ring abuts against the impeller, a gap exists between the outer wall of the abutting ring and the groove wall of the mounting groove, and a connecting hole is formed in the upper cover and communicates with the two sides of the abutting ring. The impeller is provided with a communicating hole. Through the structural arrangement of the pipeline pump body, heat accumulation generated by dry friction between the motor output shaft and the joint of the impeller and the pump body main body is reduced, the possibility of motor damage is reduced, and the service life of the pipeline pump is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water pumps, in particular to a pipeline pump body lubricating structure. BACKGROUND

[0002] The pipeline pump is a single-suction single-stage or multi-stage centrifugal pump, which is a vertical structure. Since the inlet and outlet of the pipeline pump are on the same straight line and have the same diameter, the pipeline pump looks like a section of pipeline and can be installed at any position of the pipeline, so the pipeline pump is named as such.

[0003] In the conventional pipeline pump, the motor shaft extends into the water compression chamber of the pump body, and the impeller is directly installed on the motor shaft. The impeller is driven to rotate by the motor to achieve the purpose of conveying liquid medium. When the pipeline pump works, the liquid medium enters the pump body from the liquid inlet channel, is thrown into the liquid outlet channel by the impeller, and the connection between the motor output shaft and the impeller and the pump body forms dry friction. The heat generated by dry friction cannot be quickly taken away, and the accumulated heat generates high temperature, which easily damages the motor output shaft and reduces the service life of the motor. CONTENT OF THE UTILITY MODEL

[0004] In order to lubricate the connection between the motor output shaft and the pump body and the impeller and improve the service life of the pipeline pump, the application provides a pipeline pump body lubricating structure.

[0005] The pipeline pump body lubricating structure provided by the application adopts the following technical scheme:

[0006] The pipeline pump body lubricating structure comprises a pump body, an upper cover and an impeller. The pump body is provided with a rotating cavity. The impeller is rotatably embedded in the rotating cavity. An installation groove is arranged on the upper cavity wall of the rotating cavity. The installation groove is connected with the outside. The upper cover is connected to the pump body and covers the installation groove. The upper cover is provided with a driving hole. The driving hole is used for driving the impeller to rotate after the motor output shaft passes through the driving hole. The upper cover is connected with an abutting ring. The abutting ring abuts against the impeller. There is a gap between the outer wall of the abutting ring and the groove wall of the installation groove. The upper cover is provided with a connecting hole. The connecting hole is connected with both sides of the abutting ring. The impeller is provided with a communicating hole.

[0007] Through the above technical scheme, the impeller rotates to realize that the pump body drives the liquid medium outside to flow. The liquid medium enters between the abutting ring and the groove wall of the installation groove. The liquid medium enters the inside of the abutting ring through the connecting hole to lubricate the motor output shaft on the inside of the abutting ring. The liquid medium pushes the gas on the inside of the abutting ring to the side of the impeller close to the liquid inlet channel through the communicating hole. The gas is discharged from the pump body together with the liquid medium. The heat accumulation caused by the dry friction of the connection between the motor output shaft and the impeller and the pump body is reduced. The possibility of damage to the motor is reduced. The service life of the pipeline pump is improved.

[0008] Preferably, the spacer ring is connected to the abutting ring near the impeller, and the surface of the spacer ring away from the abutting ring abuts against the impeller, and a gap exists between the outer wall of the spacer ring and the wall of the mounting groove.

[0009] By adopting the above technical scheme, the spacer ring is arranged to reduce the direct contact between the impeller and the upper cover, reduce the wear of the upper cover or the impeller, facilitate the replacement of the spacer ring to ensure the sealing performance between the spacer ring and the upper cover and the impeller, and improve the service life of the upper cover or the impeller.

[0010] Preferably, the first protruding ring is embedded in the mounting groove and is in close contact with the wall of the mounting groove.

[0011] By adopting the above technical scheme, the first protruding ring is embedded in the mounting groove and is in close contact with the wall of the mounting groove, thereby improving the stability of the connection between the upper cover and the pump body, reducing the possibility of leakage of the liquid medium conveyed by the pipeline pump from the connection between the upper cover and the pump body, improving the sealing performance between the upper cover and the pump body, and improving the reliability of the pipeline pump.

[0012] Preferably, a sealing groove is arranged at the wall of the mounting groove away from the rotating cavity, and the sealing groove is used for embedding a sealing ring.

[0013] By adopting the above technical scheme, the sealing groove is arranged for embedding the sealing ring, and the sealing ring abuts against the outer wall of the first protruding ring, the surface of the upper cover near the rotating cavity, and the wall of the sealing groove, thereby reducing the possibility of leakage of the liquid medium conveyed by the pipeline pump from the connection between the upper cover and the pump body, improving the sealing performance between the upper cover and the pump body, and improving the reliability of the pipeline pump.

[0014] Preferably, a plurality of connecting columns are connected to the outer wall of the abutting ring and are distributed circumferentially and spaced apart around the axis of the abutting ring, the side of the connecting column away from the abutting ring is connected to the inner wall of the first protruding ring, the end of the connecting column near the rotating cavity is provided with a first fixing hole, the spacer ring is provided with a first mounting hole, the number of the first mounting hole is the same as and corresponds to the number of the first fixing hole, and the first mounting hole is used for embedding a bolt to be screwed with the first fixing hole.

[0015] By adopting the above technical scheme, the plurality of connecting columns help to improve the structural strength of the upper cover and reduce the possibility of damage to the upper cover, and the relative fixation of the spacer ring and the abutting ring is realized by screwing the bolt through the first mounting hole with the first fixing hole, thereby realizing the connection between the spacer ring and the upper cover and improving the reliability of the pipeline pump.

[0016] Preferably, the spacer ring is connected with a connecting ring, the abutting ring is provided with a first ring groove near the inner wall of one end of the rotating cavity, one end of the connecting ring is embedded in the first ring groove, the outer wall of the connecting ring is in close contact with the groove wall of the first ring groove, and the other end of the connecting ring abuts against one end of the impeller near the mounting groove.

[0017] By adopting the above technical scheme, one end of the connecting ring is embedded in the first ring groove and closely contacts with the groove wall, the other end of the connecting ring abuts against one end of the impeller near the mounting groove, the inside and outside of the abutting ring are communicated through the connecting hole, the liquid medium for lubrication is communicated along a stable loop, and the working stability of the lubricating structure of the pipeline pump is ensured.

[0018] Preferably, the pump body is further provided with a reset member, the pump body is provided with a liquid inlet channel, the lower cavity wall of the rotating cavity is provided with a connecting channel, the connecting channel is communicated with the liquid inlet channel, the cavity wall of the rotating cavity is provided with a liquid outlet channel, the end of the impeller away from the spacer ring is connected with a first rotating ring, the inner wall of one end of the rotating cavity is provided with a rotating groove, the first rotating ring is embedded in the rotating groove, the outer wall of the first rotating ring is in close contact with the groove wall of the rotating groove, the other end of the impeller is connected with a second rotating ring, the outer wall of one end of the second rotating ring away from the first rotating ring is provided with a second ring groove, the connecting ring is embedded in the second ring groove, the inner wall of the connecting ring is in close contact with the groove wall of the second ring groove, and the reset member is connected between the impeller and the upper cover.

[0019] By adopting the above technical scheme, the reset member is arranged, when the pipeline pump is started, the liquid medium impacts the impeller, the impeller slides against the elastic force of the reset member, the possibility of damage of the impeller is reduced, when the liquid medium in the pipeline pump runs stably, the impeller is reset under the action of the elastic force of the reset member, the first rotating ring is embedded in the rotating groove, the water inlet side and the water outlet side of the impeller are separated, the conveying efficiency of the pipeline pump is ensured, and the reliability and service life of the pipeline pump are improved.

[0020] Preferably, the outer wall of the pump body is connected with a plurality of reinforcing ribs.

[0021] By adopting the above technical scheme, the reinforcing ribs are arranged, which is helpful to enhance the structural strength of the pump body, reduce the possibility of deformation of the pump body caused by external impact or long-time operation, and prolong the service life of the pipeline pump.

[0022] Preferably, the lower end of the pump body is connected with a bottom plate, the bottom plate is provided with a plurality of third mounting holes, the plurality of third mounting holes are distributed along the circumference of the bottom plate at intervals, and the third mounting holes are used for the bolts to pass through and be threadedly connected with the rack.

[0023] By adopting the above technical scheme, the bottom plate and the plurality of mounting holes thereon are helpful to the mounting and fixing of the pump body and the rack, and the stability and reliability of the pipeline pump during operation are improved.

[0024] Preferably, the upper cover is provided with an exhaust hole, which is in communication with the connecting hole and the outside.

[0025] By adopting the above technical scheme, the exhaust hole is arranged, so that the gas inside the abutment ring is discharged through the exhaust hole before the pipeline pump works, and liquid medium enters the motor output shaft for lubrication when the pipeline pump works, the lubrication effect is improved, dry friction is reduced, and the service life of the motor is improved.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The impeller rotates to throw the liquid medium from the liquid inlet channel into the liquid outlet channel, the liquid medium enters between the abutment ring and the installation groove through the gap between the installation groove and the partition ring, the liquid medium enters the inside of the abutment ring through the connecting hole to lubricate the motor output shaft inside the abutment ring, the liquid medium pushes the gas inside the abutment ring to the side of the impeller close to the liquid inlet channel through the communication hole, the gas is discharged from the pump body along with the liquid medium, the heat accumulation caused by dry friction at the connection between the motor output shaft and the impeller and the pump body is reduced, the possibility of motor damage is reduced, and the service life of the pipeline pump is improved;

[0028] 2. The exhaust hole is arranged, so that the gas inside the abutment ring is discharged through the exhaust hole before the pipeline pump works, and liquid medium enters the motor output shaft for lubrication when the pipeline pump works, the lubrication effect is improved, dry friction is reduced, and the service life of the motor is improved;

[0029] 3. The reset member is arranged, so that when the pipeline pump starts, the liquid medium impacts the impeller, the impeller slides against the elastic force of the reset member, the possibility of damage to the impeller is reduced, and when the liquid medium in the pipeline pump runs stably, the impeller is reset under the action of the elastic force of the reset member, the first rotating ring is embedded in the rotating groove, the water inlet side and the water outlet side of the impeller are separated, the conveying efficiency of the pipeline pump is ensured, and the reliability and service life of the pipeline pump are improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of a pipeline pump body lubricating structure.

[0031] Figure 2 is a sectional view of a pipeline pump body lubricating structure.

[0032] Figure 3 is a sectional view of a pipeline pump body lubricating structure, mainly showing the liquid inlet channel.

[0033] Figure 4 is an exploded structural schematic view of a pipeline pump body lubricating structure.

[0034] Figure 5 is Figure 2Enlarged view at B.

[0035] Figure 6 is an exploded structural schematic view of the upper cover, the spacer ring and the impeller.

[0036] Figure 7 is Figure 2 Enlarged view at B.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1. Pump body main body; 11, body; 111, rotating cavity; 112, convex column; 1121, second fixing hole; 12, liquid inlet pipe; 121, liquid inlet channel; 13, communication channel; 14, liquid outlet pipe; 141, liquid outlet channel; 15, mounting groove; 16, sealing groove; 17, rotating groove; 18, reinforcing rib; 181, vertical reinforcing rib; 182, horizontal reinforcing rib; 19, bottom plate; 191, third mounting hole;

[0039] 2. Upper cover; 21, driving hole; 22, abutment ring; 221, first ring groove; 23, connecting hole; 231, first connecting section; 232, second connecting section; 24, exhaust hole; 25, first convex ring; 26, connecting column; 261, first fixing hole; 27, ear plate; 271, second mounting hole; 28, boss; 281, embedding groove;

[0040] 3. Impeller; 31, communication hole; 32, first rotating ring; 33, second rotating ring; 331, second ring groove; 34, transmission hole;

[0041] 4. Spacer ring; 41, first mounting hole; 42, connecting ring;

[0042] 5. Reset member;

[0043] 6. First fixing seat; 61, first avoiding hole; 62, third ring groove;

[0044] 7. First sliding seat; 71, second avoiding hole; 72, fourth ring groove. DETAILED DESCRIPTION

[0045] The application will be further described in detail below with reference to the accompanying drawings.

[0046] Reference Figure 1The embodiment of the application discloses a pipeline pump body lubricating structure which comprises a pump body main body 1, the pump body main body 1 comprises a body 11, a liquid inlet pipe 12 and a bottom plate 19. The liquid inlet pipe 12 is fixedly connected to the lower end of the body 11, the bottom plate 19 is fixedly connected to the lower end of the liquid inlet pipe 12, the bottom plate 19 is provided with a plurality of third mounting holes 191, the third mounting holes 191 are used for penetrating the bolts and being threadedly connected with a rack, and the plurality of third mounting holes 191 are distributed along the circumferential direction of the bottom plate 19. In the embodiment, the third mounting holes 191 are four, and the four third mounting holes 191 are distributed at four corners of the bottom plate 19.

[0047] With reference to Figure 1 and Figure 2 The body 11 is provided with a rotating cavity 111, one end of the liquid inlet pipe 12 in the horizontal direction is provided with a liquid inlet channel 121, the liquid inlet channel 121 is located at one side of the rotating cavity 111 close to the bottom plate 19, and the liquid inlet channel 121 is connected with the outside. A communication channel 13 is arranged at the cavity wall of one side of the rotating cavity 111 close to the bottom plate 19, and the communication channel 13 is connected with the liquid inlet channel 121. An outer wall of the body 11 away from the liquid inlet channel 121 in the horizontal direction is provided with a liquid outlet pipe 14, one end of the liquid outlet pipe 14 away from the pump body main body 1 is provided with a liquid outlet channel 141, and the liquid outlet channel 141 is connected with the rotating cavity 111 and the outside.

[0048] With reference to Figure 3 The liquid outlet channel 141 is located outside the rotating cavity 111, and the liquid outlet channel 141 is in a spiral shape.

[0049] With reference to Figure 1 The outer wall of the pump body main body 1 is connected with a reinforcing rib 18, the reinforcing rib 18 comprises vertical reinforcing ribs 181 and horizontal reinforcing ribs 182, the vertical reinforcing ribs 181 are fixedly connected to the outer wall of the liquid inlet pipe 12, the length direction of the vertical reinforcing ribs 181 is vertical, the two ends of the vertical reinforcing ribs 181 are fixedly connected to the surface of one side of the bottom plate 19 close to the body 11 and the outer wall of the body 11 respectively, the vertical reinforcing ribs 181 are provided with a plurality of vertical reinforcing ribs 181, and the plurality of vertical reinforcing ribs 181 are distributed along the circumferential direction of the pump body main body 1. In the embodiment, the vertical reinforcing ribs 181 are three.

[0050] With reference to Figure 2The pipeline pump body lubricating structure further comprises an impeller 3 which is rotatably embedded in the rotating cavity 111, the rotating axis of the impeller 3 is vertical, and the end of the impeller 3 close to the bottom plate 19 abuts against the cavity wall of the rotating cavity 111 close to the bottom plate 19. The end of the impeller 3 close to the bottom plate 19 is fixedly connected with a first rotating ring 32, the axis of the first rotating ring 32 coincides with the rotating axis of the impeller 3. The inner wall of the communicating channel 13 close to the end of the rotating cavity 111 is coaxially provided with a rotating groove 17, and the end of the first rotating ring 32 away from the impeller 3 is embedded in the rotating groove 17, and the outer wall of the first rotating ring 32 is in close contact with the groove wall of the rotating groove 17.

[0051] With reference to Figure 2 And Figure 4 The pipeline pump body lubricating structure further comprises an upper cover 2. The cavity wall of the rotating cavity 111 away from the bottom plate 19 is provided with a mounting groove 15, the axis of the mounting groove 15 coincides with the rotating axis of the impeller 3, the mounting groove 15 penetrates through the body 11 along the axis direction of the mounting groove 15, and the mounting groove 15 is connected with the outside. The outer periphery of the body 11 is fixedly connected with a plurality of convex columns 112 which are circumferentially and spacedly distributed around the axis of the mounting groove 15. In the embodiment, the convex columns 112 are twelve, and the twelve convex columns 112 are circumferentially and uniformly distributed around the axis of the mounting groove 15. The upper cover 2 is fixedly connected with the end of the body 11 away from the bottom plate 19 and covers the slot opening of the mounting groove 15, the outer periphery of the upper cover 2 is fixedly connected with an ear plate 27, the number of the ear plate 27 is the same as that of the convex columns 112 and corresponds to the convex columns 112 one by one, the end of the convex column 112 away from the bottom plate 19 is provided with a second fixed hole 1121, and the ear plate 27 is provided with a second mounting hole 271, the second mounting hole 271 is used for the threaded connection of the bolt after penetrating through.

[0052] With reference to Figure 5 The side surface of the upper cover 2 close to the rotating cavity 111 is in close contact with the end of the body 11 away from the bottom plate 19, the side surface of the upper cover 2 close to the rotating cavity 111 is fixedly connected with a first convex ring 25, the first convex ring 25 is embedded in the mounting groove 15, and the outer wall of the first convex ring 25 is in close contact with the groove wall of the mounting groove 15. The groove wall of the mounting groove 15 away from the rotating cavity 111 is coaxially provided with a sealing groove 16, and the sealing groove 16 is used for embedding a sealing ring.

[0053] With reference to Figure 5 And Figure 6The side surface of the upper cover 2 close to the rotating cavity 111 is fixedly connected with an abutting ring 22, the axis of the abutting ring 22 coincides with the axis of the first convex ring 25, the abutting ring 22 is embedded in the installation groove 15, and a gap exists between the outer wall of the abutting ring 22 and the groove wall of the installation groove 15. The outer wall of the abutting ring 22 is fixedly connected with a connecting column 26, one end of the connecting column 26 away from the rotating cavity 111 is fixedly connected to the side surface of the upper cover 2 close to the rotating cavity 111, the end of the connecting column 26 close to the rotating cavity 111 is flush with the end of the abutting ring 22 close to the rotating cavity 111, and the side surface of the connecting column 26 away from the abutting ring 22 is fixedly connected to the inner wall of the first convex ring 25. The connecting column 26 is provided with a plurality of connecting columns 26, and the plurality of connecting columns 26 are distributed in a circumferential interval around the axis of the abutting ring 22. In the embodiment, the connecting column 26 is provided with four connecting columns 26, and the four connecting columns 26 are uniformly distributed around the axis of the abutting ring 22.

[0054] With reference to Figure 2 and Figure 5 The pipeline pump body lubricating structure further comprises a spacer ring 4. The spacer ring 4 is embedded in the installation groove 15, and a gap exists between the outer wall of the spacer ring 4 and the groove wall of the installation groove 15. The spacer ring 4 is coaxially fixedly connected to the end of the abutting ring 22 close to the rotating cavity 111, and the side surface of the spacer ring 4 away from the rotating cavity 111 is in close contact with the end of the abutting ring 22 close to the rotating cavity 111.

[0055] With reference to Figure 5 and Figure 6 The end of the connecting column 26 close to the rotating cavity 111 is provided with a first fixing hole 261, the spacer ring 4 is provided with a first installation hole 41, the number of the first installation hole 41 is the same as and corresponds to the number of the first fixing hole 261, and the first installation hole 41 is used for the bolt to pass through and be threadedly connected with the first fixing hole 261. The inner wall of the spacer ring 4 is coaxially fixedly connected with a connecting ring 42. The inner wall of the end of the abutting ring 22 close to the rotating cavity 111 is coaxially provided with a first ring groove 221, the end of the connecting ring 42 away from the rotating cavity 111 is embedded in the first ring groove 221, and the outer wall of the connecting ring 42 is in close contact with the groove wall of the first ring groove 221. The end of the impeller 3 away from the first rotating ring 32 is fixedly connected with a second rotating ring 33, the axis of the second rotating ring 33 coincides with the rotating axis of the impeller 3, the outer wall of the end of the second rotating ring 33 away from the first rotating ring 32 is coaxially provided with a second ring groove 331, the end of the connecting ring 42 close to the rotating cavity 111 is embedded in the second ring groove 331, and the inner wall of the connecting ring 42 is in close contact with the groove wall of the second ring groove 331. The impeller 3 is provided with a plurality of communication holes 31, the communication holes 31 communicate the two sides of the impeller 3 along the rotating axis of the impeller 3, and the plurality of communication holes 31 are distributed in a circumferential interval around the rotating axis of the impeller 3. In the embodiment, the communication holes 31 are provided with six communication holes 31, and the six communication holes 31 are uniformly distributed around the rotating axis of the impeller 3.

[0056] With reference to Figure 7The upper cover 2 is provided with a connecting hole 23 which is communicated between the inner and outer sides of the abutting ring 22. The connecting hole 23 comprises a first connecting section 231 and a second connecting section 232. The axis of the first connecting section 231 is vertical and is coplanar with the axis of the abutting ring 22. The first connecting section 231 is located between the abutting ring 22 and the first convex ring 25 near one end of the rotating cavity 111. The second connecting section 232 is inclinedly arranged near one end of the abutting ring 22 towards the side close to the rotating cavity 111. The axis of the second connecting section 232 is coplanar with the axis of the abutting ring 22. The other end of the second connecting section 232 is communicated with the other end of the first connecting section 231 away from the rotating cavity 111. The upper cover 2 is provided with an exhaust hole 24 which is communicated between the connecting hole 23 and the outside. The axis of the exhaust hole 24 is coincident with the axis of the second connecting section 232.

[0057] With reference to Figure 5 The pipe pump body lubricating structure further comprises a reset member 5, a first sliding seat 7 and a first fixed seat 6. The upper cover 2 is fixedly connected with a boss 28 on the side close to the rotating cavity 111. The axis of the boss 28 is coincident with the rotating axis of the impeller 3. The upper cover 2 is provided with a driving hole 21. The axis of the driving hole 21 is coincident with the axis of the boss 28. The driving hole 21 is sequentially penetrated through the upper cover 2 and the boss 28 along the axis of the driving hole 21. The driving hole 21 is used for driving the impeller 3 to rotate after the motor output shaft is penetrated through. The boss 28 is coaxially provided with an embedding groove 281 on the end close to the rotating cavity 111. The embedding groove 281 is communicated with the driving hole 21. One end of the first fixed seat 6 is threadedly connected in the embedding groove 281. The first fixed seat 6 is provided with a first avoiding hole 61 which is used for penetrating through the motor output shaft. The first sliding seat 7 is slidingly embedded in the mounting groove 15. The sliding direction of the first sliding seat 7 is coincident with the rotating axis of the impeller 3. The end of the first sliding seat 7 away from the first fixed seat 6 abuts against the end of the impeller 3 away from the bottom plate 19. The first sliding seat 7 is provided with a second avoiding hole 71 which is used for penetrating through the motor output shaft. The impeller 3 is provided with a transmission hole 34. The axis of the transmission hole 34 is coincident with the rotating axis of the impeller 3. The transmission hole 34 is used for embedding the motor output shaft. The reset member 5 is connected between the first fixed seat 6 and the first sliding seat 7. The reset member 5 makes the first rotating ring 32 have the tendency of being embedded in the rotating groove 17. In this embodiment, the reset member 5 is a spring. The reset member 5 is sleeved on the outer periphery of the motor output shaft. The outer periphery of the end of the first fixed seat 6 close to the impeller 3 is provided with a third ring groove 62. One end of the reset member 5 is embedded in the ring groove. The outer periphery of the end of the first sliding seat 7 away from the impeller 3 is provided with a fourth ring groove 72. The other end of the reset member 5 is embedded in the fourth ring groove 72.

[0058] The implementation principle of the pipeline pump body lubricating structure of the embodiment of the application is as follows: before use, the gas in the abutting ring 22 is discharged through the exhaust hole 24. The motor works to drive the impeller 3 to rotate, and the liquid medium in the liquid inlet channel 121 is thrown into the liquid outlet channel 141 through the impeller 3, part of the liquid medium enters the outside of the abutting ring 22 through the gap between the partition ring 4 and the groove wall of the mounting groove 15, the liquid medium passes through the first connecting section 231, enters the second connecting section 232, and then enters the inside of the abutting ring 22 to lubricate and cool the motor output shaft, the gas in the inside of the abutting ring 22 is squeezed to the lower side of the impeller 3 through the communication hole 31, and then is discharged from the pump body main part 1 along with the liquid medium.

[0059] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A pipe pump body lubrication structure, characterized by: The utility model provides a pump, including pump body main part (1), upper cover (2) and impeller (3), pump body main part (1) is equipped with rotating cavity (111), impeller (3) rotates and is embedded in rotating cavity (111) inside, rotating cavity (111) upper cavity wall is equipped with installation groove (15), installation groove (15) is linked with outside, upper cover (2) is connected in pump body main part (1) and covers installation groove (15) slot mouth, upper cover (2) is equipped with drive hole (21), drive hole (21) is used for the motor output shaft to drive impeller (3) rotation after passing, upper cover (2) is connected with abutment ring (22), abutment ring (22) and impeller (3) are in abutment, and there is gap between the outer wall of abutment ring (22) and the groove wall of installation groove (15), upper cover (2) is equipped with connecting hole (23), connecting hole (23) is linked with the both sides of abutment ring (22), impeller (3) is equipped with communicating hole (31).

2. The pipe pump body lubrication structure according to claim 1, characterized by: Still include the spacer ring (4), the spacer ring (4) is connected in abutment ring (22) one end close to impeller (3), the surface of the side away from abutment ring (22) of spacer ring (4) and impeller (3) are in abutment, and there is gap between the outer wall of spacer ring (4) and the groove wall of installation groove (15).

3. The pipe pump body lubrication structure according to claim 2, characterized by: The one end close to rotating cavity (111) of upper cover (2) is connected with first convex ring (25), first convex ring (25) is embedded in installation groove (15), and the outer wall of first convex ring (25) is attached to the groove wall of installation groove (15).

4. The pipe pump body lubrication structure according to claim 3, characterized by: The groove wall of installation groove (15) away from rotating cavity (111) one end is equipped with sealing groove (16), and sealing groove (16) is used for embedding sealing ring.

5. The pipe pump body lubrication structure according to claim 4, characterized by: The outer wall of abutment ring (22) is connected with a plurality of connecting columns (26), a plurality of connecting columns (26) are distributed in the circumferential direction of the axis of abutment ring (22) at intervals, the side away from abutment ring (22) of connecting column (26) is connected to the inner wall of first convex ring (25), the one end close to rotating cavity (111) of connecting column (26) is equipped with first fixed hole (261), the spacer ring (4) is equipped with first installation hole (41), the number of first installation hole (41) is same with the number of first fixed hole (261) and one-to-one correspondence, first installation hole (41) is used for bolt to be connected with first fixed hole (261) after passing through.

6. The pump body lubrication structure for a pipe pump according to claim 2, characterized by: The inner side of spacer ring (4) is connected with connecting ring (42), the inner wall of the one end close to rotating cavity (111) of abutment ring (22) is equipped with first ring groove (221), one end of connecting ring (42) is embedded in first ring groove (221), the outer wall of connecting ring (42) is attached to the groove wall of first ring groove (221), and the other end of connecting ring (42) is in abutment with the one end close to installation groove (15) of impeller (3).

7. The pipe pump body lubrication structure according to claim 6, characterized by: It also includes reset member (5); The pump body main part (1) is equipped with liquid inlet passage (121); The lower cavity wall of rotating cavity (111) is equipped with the communicating passage (13); The communicating passage (13) is linked with liquid inlet passage (121); The cavity wall of rotating cavity (111) is equipped with liquid outlet passage (141); The one end of impeller (3) is connected with first rotating ring (32) away from the spacer ring (4); The inner wall of the one end of communicating passage (13) close to rotating cavity (111) is equipped with rotating groove (17); First rotating ring (32) is embedded in rotating groove (17); The outer wall of first rotating ring (32) is fitted with rotating groove (17) groove wall; The other end of impeller (3) is connected with second rotating ring (33); The outer wall of the one end of second rotating ring (33) away from first rotating ring (32) is equipped with second ring groove (331); The connecting ring (42) is embedded in second ring groove (331); The inner wall of connecting ring (42) is fitted with second ring groove (331) groove wall; Reset member (5) is connected between the far and upper cover (2); Reset member (5) makes impeller (3) have the tendency of moving away from the upper cover (2).

8. The pump body lubrication structure for a pipe pump according to claim 1, characterized by: The outer wall of the pump body main part (1) is connected with several reinforcing ribs (18).

9. The pump body lubrication structure for a pipe pump according to claim 1, characterized by: The lower end of the pump body main part (1) is connected with the bottom plate (19); The bottom plate (19) is equipped with several third mounting holes (191); Several third mounting holes (191) are distributed along the circumference of the bottom plate (19); The third mounting hole (191) is used for the bolt to pass through and is screw-connected with the rack.

10. The pump body lubrication structure for a pipe pump according to claim 1, characterized by: The upper cover (2) is equipped with exhaust hole (24); The exhaust hole (24) is connected with connecting hole (23) and the outside.

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