CN212717215U

CN212717215U - Support structure in water pump

Info

Publication number: CN212717215U
Application number: CN202021572593.6U
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: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-16
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a supporting structure in water pump belongs to water pump technical field. The technical problems that the overall efficiency of the water pump is low, the service life of the water pump is short and the like are solved. This supporting structure in water pump is including being cylindric casing, the casing both ends are turbine end and motor end respectively, the turbine end has the cavity, the cavity bottom has the through-hole that runs through the casing both ends, the cavity bottom has set firmly a plurality of and has wound through-hole evenly spaced distribution and wait the guide blade that sets up equally, the guide blade is extended to border slope all around by cavity middle part position, guide blade one end links firmly on the cavity inner wall, form water passing channel between two adjacent guide blade, the discharge orifice of a plurality of intercommunication water passing channel and motor end is seted up to the cavity bottom, the discharge orifice's area of discharge orifice is different on two adjacent water passing channel. The utility model discloses well water channel's water pressure is the same, and casing convenient assembling, water pump operation are eccentric not, and the overall efficiency of water pump obtains improving, has also prolonged the life of water pump.

Description

Support structure in water pump

Technical Field

The utility model belongs to the technical field of the water pump, a supporting structure in water pump is related to.

Background

The water pump is a machine for conveying liquid or pressurizing liquid; the energy-saving device transmits mechanical energy or other external energy of a prime motor to liquid to increase the energy of the liquid, is mainly used for conveying the liquid including water, oil, acid-base liquid, emulsion, suspoemulsion, liquid metal and the like, and can also convey liquid, gas mixture and liquid containing suspended solids; the water cooling motor of the existing water pump is generally provided with a water channel along the motor for dissipating heat of the motor, and the water flow is cooled for the motor.

The national patent (publication No. CN 107013469B; publication No. 2020-03-17) discloses a centrifugal pump assembly having an electric motor and a single-stage or multistage centrifugal pump driven by the electric motor, which has at least one impeller which generates a main feed flow through an annular chamber surrounding the at least one pump stage and a cooling liquid feed flow through a chamber surrounding the motor, wherein the cooling liquid feed flow branches off from the main feed flow, the annular chamber is divided into sub-annular chambers by at least two guide vanes, and each sub-annular chamber is in line with the chamber surrounding the motor, the sub-annular chambers having different pressure levels generated by the guide vanes during operation.

The centrifugal pump unit disclosed in the above patent document forms two vortex water flows due to the two sub-annular cavities, and the water pressure of the high-end blade water flow and the water pressure of the low-end blade water flow form an opposite impact, so that the pressure loss of the water pump affects the overall efficiency of the water pump; in addition, the blades have high ends and low ends, if the number of the high ends of the blades is not symmetrical, the blades are easy to be eccentric during installation, assembly and operation, so that the axial force of the water pump is unstable, the service life of the whole water pump is further influenced, and in addition, a balance point is difficult to find during installation, and the blades are easy to be eccentric.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a supporting structure in water pump, the utility model aims to solve the technical problem that: how to improve the overall efficiency of water pump and the life of extension water pump.

The purpose of the utility model can be realized by the following technical proposal:

a support structure in a water pump comprises a cylindrical shell, wherein one end of the shell is a turbine end, the other end of the shell is a motor end, the turbine end of the shell is provided with a concave cavity, and the bottom of the concave cavity is provided with through holes which penetrate through two ends of the shell and are used for mounting a motor shaft; all the height of guide blade equals, one side of guide blade links firmly the bottom of cavity, the one end of guide blade links firmly on the inner wall of cavity, adjacent two form water channel between the guide blade, the bottom of cavity has been seted up a plurality of intercommunication every water channel with the discharge orifice between the motor end of casing, the discharge orifice's of two adjacent water channel intercommunications discharge orifice area is different.

The working principle is as follows: in the technical scheme, a motor is installed at the motor end of a shell, a plurality of guide blades in a cavity on the shell are equal in height, after the guide blades form a plurality of water passing channels with the same volume, the water pressure in the water passing channels is basically the same, and because the overflowing areas of overflowing holes connected to the motor by adjacent water passing channels are different, the flow velocity and pressure of water in the adjacent water passing channels are higher or lower after passing through the respective overflowing holes, so that circulating reflux can be realized; because the water pressure in the channel that overflows is the same, the problem of water pressure offset just can not appear, and the equal high and even setting such as guide vane can not appear in the cavity, and the off-centre problem can not appear in the casing like this in assembly and water pump operation for the overall efficiency of water pump has obtained the improvement, and the life of water pump can prolong.

In the above-mentioned supporting structure in the water pump, the quantity of guide vane is 6 at least, guide vane's side is arc smooth surface, guide vane extends along anticlockwise slope, guide vane with the one end that cavity inner wall is connected still has the reverse curved water conservancy diversion section. The side surface of the guide blade is an arc-shaped smooth surface, so that the resistance of water flow can be reduced, and the guide blade can be in large-surface contact with the water flow by arranging the flow guide section, and meanwhile, the guide blade keeps higher thrust on the water flow.

In the above-mentioned support structure in the water pump, the cavity is cylindrical, the middle part of the cavity is provided with an inward concave groove, the through hole is located at the center of the bottom of the groove, and the other end of the guide blade extends to the groove. The through hole is arranged in the middle of the groove, so that the motor and the shell can be conveniently assembled, and the shell can not be eccentric in the operation process of the pump.

In the support structure in the water pump, the number of the overflowing holes communicating each water passing channel with the motor end of the shell is one or two, and the overflowing holes are kidney-shaped holes or circular holes. The shapes and the number of the overflowing holes in different water passing channels are respectively designed, so that the overflowing areas of the overflowing holes communicated with two adjacent water passing channels are different, the requirement on a punching tool can be reduced, and the processing cost is saved.

In the above-mentioned support structure in the water pump, the motor end of the housing has a cylinder body butted with the water pump motor casing, the cylinder body and the housing are coaxially arranged, the outer circumferential surface of the cylinder body is provided with a plurality of mounting holes, and the outer circumferential surface of the housing is provided with a drain hole communicating the inside of the cylinder body with the outside of the housing. When part of water flows into the motor from the through hole along the motor shaft, the part of water can be discharged from the water discharge hole, and the motor is prevented from being damaged.

In the support structure in the water pump, the outer surface of the shell is distributed with a plurality of reinforcing ribs in a criss-cross manner. The rigidity of the shell can be enhanced, and the service life of the shell is prolonged.

In the support structure in the water pump, the turbine end edge of the shell is provided with a flange which is turned outwards, the flange is provided with a plurality of connecting holes, and the connecting holes are uniformly distributed at intervals along the circumferential direction of the flange. The flange is arranged to facilitate connection of the housing to a pump stage arranged at the turbine end of the inner housing of the water pump.

In the support structure in the water pump, the end face, close to the turbine, of the outer peripheral surface of the shell is provided with an annular reinforcing convex rib, the reinforcing convex rib is arranged around the circumferential direction of the shell, and one side of the reinforcing convex rib is fixedly connected with the flange. The strength of the connection between the flange and the shell can be increased, and the service life of the shell is prolonged.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses equal height of a plurality of guide blade in the fovea and evenly set up around the through-hole, eccentric problem can not appear in casing installation and water pump operation, and the different velocity of flow pressures that form of the different flow area that utilize two adjacent water channel intercommunication here realize circulation reflux, and water pressure in the water channel is the same, can not appear the problem of water pressure offset, has improved the whole efficiency of water pump from this, has also prolonged the life of water pump.

2. The utility model discloses set up the strengthening rib on the well casing and strengthen protruding muscle can strengthen the rigidity of casing, prolong the life of casing.

3. The utility model discloses in set up the wash port and can discharge the water that will get into the motor inside along the motor shaft, play the effect of protection motor.

Drawings

Fig. 1 is a schematic perspective view of a bracket structure in the water pump.

Fig. 2 is a schematic perspective view of the bracket structure in the water pump.

Fig. 3 is a three-dimensional structural schematic diagram of the support structure in the water pump.

In the figure, 1, a housing; 11. a turbine end; 12. a motor terminal; 13. a concave cavity; 14. a groove; 14a, a through hole; 15. an overflowing hole; 16. a barrel; 16a, mounting holes; 17. a drain hole; 18. reinforcing ribs; 2. a guide blade; 21. a flow guide section; 3. a water passage; 4. a flange; 41. connecting holes; 5. and reinforcing the convex ribs.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, the support structure in the water pump in this embodiment includes a housing 1, the housing 1 is disposed in a cylindrical shape, one end of the housing 1 is a turbine end 11 and the other end is a motor end 12, the outer periphery of the turbine end 11 of the housing 1 is provided with an outwardly extending flange 4, the flange 4 is provided with a plurality of connecting holes 41 distributed at intervals along the circumferential direction of the flange 4, the turbine end 11 of the housing 1 is provided with a cylindrical cavity 13, the middle of the bottom surface of the cavity 13 is provided with an inwardly extending groove 14, the middle of the bottom surface of the groove 14 is provided with a through hole 14a penetrating through the motor end 12 of the housing 1 and used for installing a motor shaft, at least six guide blades 2, preferably eight guide blades 2 are fixedly arranged in the cavity 13 at intervals along the circumferential direction of the through hole 14a, one end of each guide blade 2 is fixedly connected to the inner wall of the cavity 13, the other end of each guide blade, one side of each guide blade 2 is fixedly arranged at the bottom of the cavity 13, the other sides of the eight guide blades 2 extend towards the port of the cavity 13, the axial height of the other side of each guide blade 2 is equal to that of the shell 1, the eight guide blades 2 respectively extend along the anticlockwise direction in an inclined mode, one end, connected with the inner wall of the cavity 13, of each guide blade 2 is provided with a flow guide section 21 which is bent reversely, the side faces of each guide blade 2 are arc-shaped circular sliding faces, a water passing channel 3 is formed between every two adjacent guide blades 2 in the eight guide blades 2, the bottom of the cavity 13 is provided with a plurality of overflowing holes 15, one end of each overflowing hole 15 is located on the bottom face of the cavity 13 in the water passing channel 3, the other end of each overflowing hole 15 is located at the motor end 12 of the shell 1, each water passing channel 3 is communicated with the motor end 12.

Further, as shown in fig. 1, the number of the overflowing holes 15 in two adjacent water channels 3 may be the same or different, the overflowing hole 15 in each water channel 3 is one or two, the shape of the overflowing hole 15 in one water channel 3 or the shape of the overflowing hole 15 in the adjacent water channel 3 is not necessarily the same, the overflowing holes 15 are kidney-shaped holes or circular holes, and the overflowing area of the overflowing hole 15 in each circular hole is 38.365mm²The waist-shaped holes are divided into a large waist-shaped hole and a small waist-shaped hole, and the flow area of the flow passing hole 15 of each large waist-shaped hole is 103.835mm²The flow area of each of the through-flow holes 15, which are small kidney-shaped holes, is 67.195mm²。

Further, as shown in fig. 1 to 3, the motor end 12 of the casing 1 has a cylinder 16 coaxial with the casing 1, where the cylinder 16 is abutted to the housing of the motor on the water pump, the outer circumferential surface of the cylinder 16 is provided with a plurality of mounting holes 16a for fixing the motor, the outer circumferential surface of the casing 1 is provided with a water drainage hole 17, one end of the water drainage hole 17 is arranged inside the cylinder 16, and the other end is located on the outer side surface of the casing 1; be equipped with a plurality of strengthening rib 18 on the lateral surface of casing 1, a plurality of strengthening rib 18 vertically and horizontally staggered distributes on the 1 outer peripheral face of casing, strengthens protruding muscle 5 in addition between strengthening rib 18 and the flange 4, strengthens protruding muscle 5 along the outside protrusion of 1 outer peripheral face of casing, strengthens the both sides of protruding muscle 5 and links firmly with strengthening rib 18 and one side of flange 4 mutually respectively.

The casing 1 is used on a centrifugal pump or a multi-stage centrifugal pump, a pump stage and a motor are respectively arranged at two ends of the casing 1, after the guide blades 2 in the cavity 13 form a plurality of water passing channels 3 with the same volume, the water pressure of each water passing channel 3 is basically the same, and the flow velocity and the pressure of water in the adjacent water passing channels 3 are different after the water passes through the respective water passing holes 15 due to the fact that the flow passing areas of the water passing holes 15 connected to the motor by the adjacent water passing channels 3 are different, so that circulation backflow can be achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The support structure in the water pump comprises a cylindrical shell (1), wherein one end of the shell (1) is a turbine end (11), the other end of the shell is a motor end (12), the turbine end (11) of the shell (1) is provided with a cavity (13), the bottom of the cavity (13) is provided with through holes (14a) which penetrate through two ends of the shell (1) and are used for installing a motor shaft, the support structure is characterized in that a plurality of guide blades (2) are fixedly arranged in the cavity (13), the guide blades (2) are uniformly distributed around the through holes (14a) at intervals, and the guide blades (2) are obliquely extended from the middle position of the cavity (13) to the peripheral edge; all the height of guide blade (2) equals, one side of guide blade (2) links firmly the bottom of cavity (13), the one end of guide blade (2) links firmly on the inner wall of cavity (13), adjacent two form water channel (3) between guide blade (2), a plurality of intercommunication is seted up to the bottom of cavity (13) every water channel (3) with overflowing hole (15) between motor end (12) of casing (1), the area of overflowing hole (15) of two adjacent water channel (3) intercommunications is different.

2. The support structure in a water pump according to claim 1, characterized in that the number of the guide vanes (2) is at least 6, the side surfaces of the guide vanes (2) are arc-shaped smooth surfaces, the guide vanes (2) extend obliquely along the counterclockwise direction, and one ends of the guide vanes (2) connected with the inner wall of the concave cavity (13) are provided with reversely bent guide sections (21).

3. The bracket structure in a water pump according to claim 2, wherein the cavity (13) is cylindrical, the middle of the cavity (13) is provided with an inward concave groove (14), the through hole (14a) is positioned at the center of the bottom of the groove (14), and the other end of the guide vane (2) extends to the groove (14).

4. The bracket structure in a water pump according to claim 1, 2 or 3, characterized in that the number of the overflowing holes (15) communicating each water passing channel (3) and the motor end (12) of the housing (1) is one or two, and the overflowing holes (15) are kidney-shaped holes or circular holes.

5. The support structure in a water pump according to claim 1, 2 or 3, characterized in that the motor end (12) of the shell (1) is provided with a cylinder (16) which is butted with a water pump motor shell, the cylinder (16) is coaxially arranged with the shell (1), the outer circumferential surface of the cylinder (16) is provided with a plurality of mounting holes (16a), and the outer circumferential surface of the shell (1) is provided with a drain hole (17) which is communicated with the inside of the cylinder (16) and the outside of the shell (1).

6. The support structure in a water pump according to claim 1, 2 or 3, wherein a plurality of reinforcing ribs (18) are distributed on the outer surface of the shell (1) in a criss-cross manner.

7. The support structure in the water pump according to claim 1, 2 or 3, wherein the edge of the turbine end (11) of the housing (1) is provided with a flange (4) which is turned outwards, the flange (4) is provided with a plurality of connecting holes (4a), and the connecting holes (4a) are uniformly distributed at intervals along the circumferential direction of the flange (4).

8. The support structure in a water pump according to claim 7, wherein the outer peripheral surface of the housing (1) near the turbine end (11) has an annular reinforcing rib (5), the reinforcing rib (5) is circumferentially arranged around the housing (1), and one side of the reinforcing rib (5) is fixedly connected with the flange (4).