CN111577612A

CN111577612A - Water retaining ring structure of water pump

Info

Publication number: CN111577612A
Application number: CN201910621833.2A
Authority: CN
Inventors: 颜成刚; 林荣
Original assignee: Leo Group Co ltd
Current assignee: Leo Group Co ltd; Leo Group Zhejiang Pump Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-08-25

Abstract

The invention belongs to the technical field of water pumps, and relates to a water retaining ring structure of a water pump, which comprises a pump body and a motor, wherein a motor-driven impeller is arranged in the pump body, the impeller is sleeved at one end of a rotating shaft and is internally provided with a mechanical seal, the pump body is fixedly connected with the motor through a support, the support is arranged at the corresponding end surfaces of the pump body and the motor and is sleeved on the rotating shaft, the rotating shaft is transversely arranged, a water retaining ring is sleeved on the rotating shaft between the pump body and the motor, the water retaining ring is in interference fit with the rotating shaft, the water retaining ring comprises an annular part and a disc-shaped part, the disc bottom of the disc-shaped part is connected with the annular part, the. The water retaining ring structure of the water pump provided by the invention not only blocks the leakage water at the mechanical seal position, but also blocks the water flow impact in other directions such as radial direction, thereby effectively preventing the water from entering the motor.

Description

Water retaining ring structure of water pump

Technical Field

The invention belongs to the technical field of water pumps, and relates to a water retaining ring structure of a water pump.

Background

The known structure of a water pump generally comprises a pump body and a motor, wherein an impeller driven by the motor is arranged in the pump body, and the impeller is sleeved at one end of a pump shaft and is provided with a mechanical seal. Because the restriction of water pump structure, mechanical seal department still has water to reveal, and the water of revealing can get into inside the motor along the gap of axis of rotation and bearing, and then causes the motor to damage. At the same time, in addition to the leakage at the mechanical seal, water leakage also occurs in other directions of the pump body, such as radially.

The Chinese patent invention CN206377042U discloses a water pump connecting seat assembly, which comprises a connecting seat, wherein the middle of the connecting seat penetrates through a motor rotor shaft, the inner side end surface of the connecting seat is provided with a bearing hole, a bearing is arranged in the bearing hole to carry out rotary support on the front shaft end of the motor rotor shaft, the bearing is axially positioned, the outer ring end surface of the bearing is pressed by a bolt with a gasket, and the bolt with the gasket is screwed on the connecting seat in a threaded manner. The outer side end face of the connecting seat is provided with a mechanical sealing space, a mechanical sealing element is arranged in the mechanical sealing space, a water retaining ring space is arranged between the mechanical sealing space and the bearing hole, an opening is formed in the bottom of the water retaining ring space, and a water retaining ring is arranged in the water retaining ring space.

Above-mentioned patent uses the manger plate circle manger plate of a planar structure, and its weak point lies in, and the manger plate circle can only block leaking of mechanical seal department, and can't block other directions like radial rivers impact, and then can't thoroughly solve the problem that leaks the water and lead to the motor damage.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the water retaining ring structure of the water pump, which not only blocks the leakage water at the mechanical seal position, but also blocks the water flow impact in other directions such as radial direction, thereby effectively preventing the water from entering the motor.

In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:

the utility model provides a water retaining ring structure of water pump, the water pump includes the pump body and motor, is provided with motor drive's impeller in the pump body, and the impeller cover is established in axis of rotation one end and is provided with mechanical seal in the inboard, the pump body passes through support fastening connection with the motor, and the support setting is established at the corresponding terminal surface of the pump body and motor and is established in the axis of rotation, the axis of rotation transversely sets up, and the cover is equipped with the water retaining ring in the axis of rotation between the pump body and the motor, interference fit between water retaining ring and the axis of rotation, the water retaining ring includes annular portion and dish-shaped portion, and the dish end of dish-shaped portion links to each.

When the rotating shaft is static, the disc edge of the disc-shaped part is in contact connection with the end surface of the inner side of the bracket; when the rotating shaft rotates, the disc edge of the disc-shaped part is separated from the inner side end face of the support, and preferably, the distance between the disc edge and the inner side end face of the support is 1-10 micrometers.

And a drainage notch communicated with the outside is arranged above the support to drain accumulated water in the support.

The periphery of the disc-shaped part of the water retaining ring is provided with a plurality of water drainage through holes, the water drainage through holes are preferably arranged at positions close to the disc edge, and a small amount of water in the water retaining ring is drained when the water pump is static.

The front end of the motor connecting support is provided with an annular bulge, and the water retaining ring is arranged in the annular bulge. The motor connecting bracket refers to a bracket part connected with a motor.

Preferably, the end face of the annular bulge is an inclined plane, the annular bulge on one side close to the drainage notch exceeds the rear end face of the pump body connecting support, and a gap is reserved between the annular bulge and the pump body connecting support; the annular bulge on one side far away from the drainage notch is lower than the front end face of the water retaining ring and is provided with a fracture. The pump body connecting bracket refers to a bracket part connected with the pump body.

The rear end of the motor connecting support is provided with a bearing seat, a bearing assembled on the rotating shaft is arranged in the bearing seat, the rear side of the bearing is provided with an elastic retainer ring, the inner diameter of the shaft hole of the support is larger than the outer diameter of the rotating shaft, and the disc edge of the disc-shaped part is positioned on the outer side of the shaft hole and covers the shaft hole.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention designs a water retaining ring with a brand new structure, which comprises an annular part close to one side of a pump body and a disc-shaped part close to one side of a motor, wherein the disc bottom of the disc-shaped part is connected with the annular part. The water retaining ring forms a bidirectional sealing structure: the annular part is used for blocking water leaked from the mechanical seal of the end surface of the outer side of the bracket to form a water retaining structure of the mechanical seal; the disk-shaped part is used for blocking water flow impact in other directions, particularly in the radial direction, and a water retaining structure at the position of the rotary bearing is formed. Thereby effectively preventing the motor from being damaged due to water inflow of the motor.

2. The invention also provides a drainage structure: the drainage notch communicated with the outside is arranged above the support, accumulated water in the support is drained, and a plurality of drainage through holes are circumferentially arranged on the disc-shaped part of the water retaining ring, so that a small amount of accumulated water in the water retaining ring is drained. Thereby further avoiding the possibility of water ingress into the motor.

3. The water retaining ring is in interference fit with the rotating shaft when being installed, so that the defect that the water retaining ring floats up and down in the high-speed rotating process of the rotating shaft is overcome. Meanwhile, the disc edge of the disc-shaped part is in contact connection with the end face of the inner side of the support during installation, and slight friction after the rotation of the rotating shaft ensures that the disc edge keeps a good contact distance with the end face of the inner side of the support during high-speed rotation, so that the possibility of water inflow of the motor can be reduced.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view at A of FIG. 1;

reference numerals: 1. a pump body; 2. a motor; 3. an impeller; 4. a rotating shaft; 5. mechanical sealing; 6. a support; 7. a water retaining ring; 7a, an annular portion; 7b, a disk portion; 8. a drainage notch; 9. a drain through hole; 10. an annular projection; 11. a bearing seat; 12. a bearing; 13. a circlip; 14. and the shaft hole.

Detailed Description

The invention is further described in the following with specific embodiments in conjunction with the accompanying drawings, see fig. 1-2:

the utility model provides a water retaining ring structure of water pump, the water pump includes the pump body 1 and motor 2, is provided with motor 2 driven impeller 3 in the

pump body

1, and 3 covers of impeller are established in 4 one ends of axis of rotation and are provided with mechanical seal 5 in the inboard, the pump body 1 passes through 6 fastening connections of support with motor 2, and support 6 sets up and establishes at the corresponding terminal surface of the pump body 1 and motor 2 and establish in axis of rotation 4, 4 horizontal settings of axis of rotation are equipped with water retaining ring 7 on the axis of rotation 4 between the pump body 1 and the motor 2 cover, interference fit between water retaining ring 7 and the axis of rotation 4, water retaining ring 7 includes annular portion 7a and dish portion 7b, and the dish end of dish portion 7b links to each other with annular portion 7a, annular portion 7a is close to 1 one side of the pump body.

When the water pump works, the water retaining ring 7 is used for blocking water leaked from the mechanical seal 5 on the end face of the outer side of the support 6, and the disc-shaped part 7b is used for blocking water flow impact in other directions, particularly in the radial direction, so that a bidirectional water retaining structure is formed, and water inflow in the motor 2 is effectively prevented.

The installation mode of the water retaining ring 7 is as follows: when the rotating shaft 4 is static, the disc edge of the disc-shaped part 7b is in contact connection with the inner side end surface of the bracket 6; when the rotating shaft 4 is rotated, the disc edge of the disc-shaped portion 7b is separated from the inner end surface of the bracket 6, and preferably, the distance between the disc edge and the inner end surface of the bracket 6 is 1-10 μm.

The invention also provides a drainage structure of the water retaining ring 7, which comprises the following steps: a drainage notch 8 communicated with the outside is arranged above the bracket 6 and used for draining accumulated water in the bracket 6.

The disk-shaped part 7b of the water retaining ring 7 is circumferentially provided with a plurality of water drainage through holes 9, the water drainage through holes 9 are preferably arranged at positions close to the disk edge, and when the water pump is static, the water pump is used for draining a small amount of inlet water in the water retaining ring 7.

In order to protect the water retaining ring 7 and facilitate water drainage, the front end of the connecting bracket 6 of the motor 2 is provided with an annular bulge 10, and the water retaining ring 7 is arranged in the annular bulge 10. The motor 2 connecting bracket 6 refers to the part of the bracket 6 connected with the motor 2.

Preferably, the end face of the annular protrusion 10 is an inclined plane, the annular protrusion 10 on the side close to the drainage notch 8 exceeds the rear end face of the connecting bracket 6 of the pump body 1, and a gap is reserved between the annular protrusion and the connecting bracket 6 of the pump body 1; the annular bulge 10 far away from one side of the drainage notch 8 is lower than the front end face of the water retaining ring 7 and is provided with a fracture. The pump body 1 connecting bracket 6 refers to a bracket 6 part connected with the pump body 1.

The connection structure of the bearing of the water retaining ring 7 and the motor 2 is as follows: the rear end of the motor 2 connecting bracket 6 is provided with a bearing seat 11, a bearing 12 assembled on the rotating shaft 4 is arranged in the bearing seat 11, the rear side of the bearing 12 is provided with an elastic retainer ring 13, the inner diameter of a shaft hole 14 of the bracket 6 is larger than the outer diameter of the rotating shaft 4, and the disc edge of the disc-shaped part 7b is positioned outside the shaft hole 14 and covers the shaft hole 14.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A water retaining ring structure of a water pump comprises a pump body (1) and a motor (2), wherein an impeller (3) driven by the motor (2) is arranged in the pump body (1), the impeller (3) is sleeved at one end of a rotating shaft (4) and is provided with a mechanical seal (5) at the inner side, the pump body (1) and the motor (2) are fixedly connected through a support (6), the support (6) is arranged at the corresponding end surfaces of the pump body (1) and the motor (2) and sleeved on the rotating shaft (4), the water retaining ring structure is characterized in that the rotating shaft (4) is transversely arranged, the rotating shaft (4) between the pump body (1) and the motor (2) is sleeved with the water retaining ring (7), the water retaining ring (7) is positioned in the support (6), the water retaining ring (7) and the rotating shaft (4) are in interference fit, the water retaining ring (7) comprises an annular part (7a), the dish bottom of dish portion (7b) links to each other with annular portion (7a), annular portion (7a) are close to pump body (1) one side, dish portion (7b) are close to motor (2) one side.

2. The water deflector structure of a water pump according to claim 1, wherein the disc edge of the disc-shaped portion (7b) is in contact connection with the inner end surface of the bracket (6) when the rotating shaft (4) is at rest.

3. The water deflector structure of a water pump according to claim 1, wherein the disc edge of the disc-shaped portion (7b) is separated from the inner end surface of the bracket (6) when the rotating shaft (4) rotates, and the distance between the disc edge and the inner end surface of the bracket (6) is 1-10 μm.

4. The water retaining ring structure of the water pump as claimed in claim 1, wherein a drainage gap (8) communicated with the outside is arranged above the bracket (6).

5. The water deflector structure of a water pump according to claim 1, characterized in that the disc-shaped part (7b) of the water deflector (7) is circumferentially provided with a plurality of drainage through holes (9).

6. The water retaining ring structure of the water pump as claimed in claim 2, wherein the front end of the connecting bracket (6) of the motor (2) is provided with an annular protrusion (10), and the water retaining ring (7) is arranged in the annular protrusion (10).

7. The water retaining ring structure of the water pump according to claim 6, wherein the end surface of the annular protrusion (10) is an inclined surface, the annular protrusion (10) on the side close to the drainage notch (8) exceeds the rear end surface of the connecting bracket (6) of the pump body (1), and a gap is reserved between the annular protrusion and the connecting bracket (6) of the pump body (1); the annular bulge (10) far away from one side of the drainage notch (8) is lower than the front end surface of the water retaining ring (7) and is provided with a fracture.

8. The water deflector structure of the water pump according to claim 1, wherein a bearing seat (11) is provided at the rear end of the motor (2) connecting bracket (6), a bearing (12) assembled on the rotating shaft (4) is provided in the bearing seat (11), a circlip (13) is provided at the rear side of the bearing (12), the inner diameter of the shaft hole (14) of the bracket (6) is larger than the outer diameter of the rotating shaft (4), and the disc edge of the disc-shaped portion (7b) is located outside the shaft hole (14) and covers the shaft hole (14).