CN211116775U

CN211116775U - Impeller for vortex pump

Info

Publication number: CN211116775U
Application number: CN201922187042.1U
Authority: CN
Inventors: 薛菊能
Original assignee: Yuhuan Huaneng Impeller Co ltd
Current assignee: Yuhuan Huaneng Impeller Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-07-28
Anticipated expiration: 2029-12-09

Abstract

The utility model provides an impeller for volute pump belongs to volute pump technical field. The impeller and the main shaft of the vortex pump solve the problem that an existing impeller and a main shaft of the vortex pump can shake relatively when fixed. This impeller for vortex pump is including being used for the rim plate with the relative axial connection of main shaft, the circumference outside along evenly spaced distribution of rim plate has a plurality of blades, and two adjacent blades form retaining wheel groove on the rim plate, and the center of rim plate sets up axle sleeve and this axle sleeve and outwards protrudes from one of them surface of rim plate, and the rim plate is provided with between axle sleeve and the relative axial connection of main shaft and this axle sleeve and the main shaft and prevents that rim plate circumferential direction's assembly connection device on the main shaft through the axle sleeve. The utility model has reasonable and simple structure design, can prevent the shaft sleeve and the main shaft from relative rotation and shaking in the circumferential direction and can also prevent the shaft sleeve and the main shaft from relative movement and shaking in the axial direction; the connecting structure is stable and the service life is long.

Description

Impeller for vortex pump

Technical Field

The utility model belongs to the technical field of the volute pump, a impeller for volute pump is related to.

Background

The vortex pump is a low specific speed vane pump, and is widely applied to industries such as chemical industry, fire fighting, resident domestic water, instruments and meters, hydraulic transmission, aerospace, medical appliances and the like due to the advantages of high lift, small flow, low cost, simple and compact structure, easiness in processing, self-absorption function, gas-liquid mixed transportation function and the like.

The vortex pump mainly comprises a pump shell and an impeller. The outer edge part of the impeller is uniformly and radially provided with a plurality of radial blades, and the number of the blades is as many as dozens of blades. The vortex pump boosts and accelerates fluid through momentum exchange in the impeller and in the flow channel, namely each backflow movement causes backflow to collide with pressure flow in the flow channel, and a large amount of longitudinal vortices and radial vortices are generated in a flow area.

The blades in the existing vortex pump are directly and fixedly connected with a main shaft in the circumferential direction, for example, the Chinese patent numbers are as follows: 201820745156.6 relates to a vortex pump impeller with semi-open type taper blade structure, which comprises a wheel disc, wherein the outer edge of the circumference of the wheel disc is uniformly distributed with a plurality of taper blades, the edge width of the outward end of the taper blade is larger than that of the inward end; a rotating shaft is arranged at the center of the wheel disc, the rotating shaft protrudes outwards from one surface of the wheel disc, and a shaft hole is formed in the center of the rotating shaft; the shaft hole is semicircular; the impeller is fixedly connected with the main shaft in the circumferential direction through a shaft hole of the rotating shaft. After the connection, the impeller rotates in the vortex pump for a long time, the inner wall of the shaft hole of the rotating shaft of the impeller can be abraded to cause the impeller and the main shaft to shake relatively when fixed, the service life of the impeller is short, the working efficiency of the impeller is influenced, and the working efficiency of the vortex pump is low.

Disclosure of Invention

The utility model aims at providing a simple structure, impeller and main shaft fixed connection stable in structure, long service life's impeller for volute pump to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an impeller for volute pump, is including being used for the rim plate of being connected with the relative axial of main shaft, the circumference outer fringe of rim plate evenly spaced apart distribute have a plurality of blades, two adjacent blades form retaining race on the rim plate, its characterized in that, the center of rim plate set up axle sleeve and this axle sleeve and outwards bulge from one of them surface of rim plate, the rim plate pass through axle sleeve and the relative axial of main shaft and be provided with between this axle sleeve and the main shaft and prevent rim plate circumferential direction's on the main shaft assembly connecting device.

This impeller for volute pump is mainly provided with assembly connection device between axle sleeve and main shaft to can prevent effectively through assembly connection device that the rim plate from circumferential direction on the main shaft, the phenomenon that appears rocking when preventing rim plate and main shaft assembly connection, this impeller use stable in structure, long service life causes volute pump work efficiency height.

In foretell impeller for vortex pump, assembly connection device include that the fixed bar flat key piece that is the axial setting that inlays on the outer wall of main shaft, the inner wall of axle sleeve on have the flat keyway of axial setting, when the axle sleeve is connected with the relative axial of main shaft, and this bar flat key piece axial joint prevents the rim plate in main shaft circumferential direction in the flat keyway that corresponds, axle sleeve and main shaft between still be provided with the screens that prevents the rim plate axial float on the main shaft and support and lean on the device. The purpose of setting up like this can prevent effectively that axle sleeve and main shaft from appearing the relative rotation in circumference and rocking.

In foretell impeller for vortex pump, the screens support to lean on the device to include fastening component, the axle sleeve on have the screens hole that is radial setting, bar parallel key piece on have a screens groove, when the relative axial of axle sleeve and main shaft is connected, and this screens hole is relative with screens groove axial, fastening component set firmly in the screens hole and this fastening component wear to establish the end card and be located the screens groove and prevent the rim plate axial float on the main shaft. The purpose of setting up like this can prevent effectively that axle sleeve and main shaft from appearing the relative drunkenness of axial and rocking.

In foretell impeller for vortex pump, fastening components include outer bolt and interior bolt, outer bolt on have an axial screw hole, interior bolt pass through the mode of spiral and connect on outer bolt with the axial, the outer wall of outer bolt on have the external screw thread, the inner wall in screens hole on have the internal thread, the external screw thread of outer bolt and the internal thread screw cooperation in screens hole connect, when setting up the outer bolt axial screens in the screens groove in the screens hole, rotate the tank bottom that the inner top in the interior bolt made interior bolt tight screens groove. The shaft sleeve and the main shaft are axially limited more stably by finely adjusting the spiral support on the outer bolt through the inner bolt.

In the impeller for the vortex pump, the end surface of the inner end of the inner bolt is further vulcanized and fixedly connected with a rubber cushion block, and the inner bolt tightly pushes the bottom of the clamping groove through the rubber cushion block. The purpose of setting like this is that increase the elastic force that the internal bolt leaned on at the tank bottom of screens groove, and it is more stable to lean on the structure.

In the impeller for the vortex pump, the other surface of the wheel disc far away from the shaft sleeve is provided with the annular mounting position, the annular mounting position is provided with the locking ring, and when the shaft sleeve is axially connected with the main shaft relatively, the locking ring is detachably and fixedly connected with the extending end of the main shaft through threads. The shaft sleeve and the spindle are further axially limited through the connection of the locking ring and the extension end of the spindle, and the structure is stable.

In the impeller for the vortex pump, the inner wall of the locking ring is fixedly connected with a rubber gasket in a vulcanization mode, and when the locking ring is fixedly connected with the extending end of the main shaft, the rubber gasket of the locking ring is located in the annular installation position and is in elastic extrusion fit with the annular installation position. The purpose of this setting is to make the locking ring and the annular installation position have the elasticity effort of butt when abutting, and the structure of butt is more stable.

In the impeller for the vortex pump, the blades are distributed on the upper surface and the lower surface of the circumferential outer edge of the wheel disc, and the upper surface and the lower surface of the circumferential outer edge of the wheel disc are both in a surrounding sharp arc shape. The purpose of this arrangement is to improve the operating efficiency of the impounded wheel groove.

In the above-mentioned impeller for vortex pump, the blade be bar shape, this blade is radial setting and the upper and lower arris of this blade and the upper and lower surface of rim plate are relatively leveled on the rim plate. The purpose of this arrangement is to improve the water retention capacity of the rotation of the impounded wheel groove.

Compared with the prior art, this impeller for volute pump's advantage does: the structure design is reasonable and simple, and not only can the shaft sleeve and the main shaft be prevented from relative rotation and shaking in the circumferential direction, but also the shaft sleeve and the main shaft can be prevented from relative movement and shaking in the axial direction; the connecting structure is stable and the service life is long.

Drawings

Fig. 1 is a schematic sectional view of an impeller for a vortex pump assembled to a main shaft.

Fig. 2 is a front view schematically showing the structure of the impeller for the vortex pump.

In the figure, 1, main shaft; 2. a wheel disc; 3. a blade; 4. a shaft sleeve; 5. a bar-shaped flat key block; 6. a flat key groove; 7. an external bolt; 8. an inner bolt; 9. a rubber cushion block; 10. locking a ring; 11. a rubber gasket.

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 and 2, the impeller for the vortex pump mainly comprises a wheel disc 2 which is used for being axially connected with a main shaft 1 relatively, a plurality of blades 3 are uniformly distributed at intervals on the outer edge of the circumference of the wheel disc 2, and a water storage wheel groove is formed on the wheel disc 2 by two adjacent blades 3; during actual manufacturing, the blades 3 are distributed on the upper surface and the lower surface of the circumferential outer edge of the wheel disc 2, and the upper surface and the lower surface of the circumferential outer edge of the wheel disc 2 are both in a surrounding sharp arc shape; the blade 3 is the bar shape, and this blade 3 is radial setting and the upper and lower arris of this blade 3 and the upper and lower surface of rim plate 2 are relatively leveled on rim plate 2.

The center of the wheel disc 2 is provided with a shaft sleeve 4, the shaft sleeve 4 protrudes outwards from one surface of the wheel disc 2, the wheel disc 2 is axially connected with the main shaft 1 relatively through the shaft sleeve 4, and an assembly connecting device for preventing the wheel disc 2 from rotating on the main shaft 1 in the circumferential direction is arranged between the shaft sleeve 4 and the main shaft 1.

In actual manufacturing, the specific implementation mode of the assembly connecting device is as follows: the fixed bar flat key piece 5 that is the axial setting that inlays on the outer wall of main shaft 1, the flat keyway 6 that has the axial setting on the inner wall of axle sleeve 4, when the axle sleeve 4 is connected with the relative axial of main shaft 1, and this bar flat key piece 5 axial joint prevents rim plate 2 in the flat keyway 6 that corresponds and at 1 circumferential direction of main shaft, still is provided with the screens that prevents rim plate 2 axial float on main shaft 1 between axle sleeve 4 and the main shaft 1 and supports and lean on the device.

In actual manufacturing, the specific implementation mode of the clamping abutting device is as follows: mainly constitute by fastening component, have on the axle sleeve 4 and be the screens hole of radial setting, have the screens groove on the bar flat key piece 5, when the axle sleeve 4 is connected with the relative axial of main shaft 1, and this screens hole and screens groove axial are relative, and fastening component sets firmly in the screens hole and this fastening component's the end card of wearing to establish prevents rim plate 2 axial float on main shaft 1 in the screens groove. Specifically speaking: the specific structure of the fastening component is as follows: the clamping device mainly comprises an outer bolt 7 and an inner bolt 8, wherein the outer bolt 7 is provided with an axial threaded hole, the inner bolt 8 is coaxially connected to the outer bolt 7 in a spiral mode, the outer wall of the outer bolt 7 is provided with an external thread, the inner wall of a clamping hole is provided with an internal thread, the external thread of the outer bolt 7 is in spiral fit connection with the internal thread of the clamping hole, and when the outer bolt 7 arranged in the clamping hole is axially clamped in the clamping groove, the inner bolt 8 is rotated to enable the inner end of the inner bolt 8 to tightly prop against the bottom of the clamping groove; during actual design, the inner end face of the inner bolt 8 is further vulcanized and fixedly connected with a rubber cushion block 9, and the inner bolt 8 is tightly pressed against the bottom of the clamping groove through the rubber cushion block 9.

An annular mounting position is arranged on the other surface of the wheel disc 2 far away from the shaft sleeve 4, a locking ring 10 is arranged on the annular mounting position, and when the shaft sleeve 4 is axially connected with the main shaft 1 relatively, the locking ring 10 is detachably and fixedly connected with the extending end of the main shaft 1 through threads; the inner wall of the locking ring 10 is fixedly connected with a rubber gasket 11 in a vulcanization mode, when the locking ring 10 is fixedly connected with the extending end of the main shaft 1, the rubber gasket 11 of the locking ring 10 is located in the annular installation position and is in elastic extrusion fit with the annular installation position.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an impeller for volute pump, is including being used for rim plate (2) of being connected with the relative axial of main shaft (1), the circumference outer fringe of rim plate (2) evenly spaced apart and distribute and have a plurality of blades (3), two adjacent blades (3) form retaining race on rim plate (2), a serial communication port, the center of rim plate (2) set up axle sleeve (4) and this axle sleeve (4) from one of them surperficial of rim plate (2) outwards protrusion, rim plate (2) through axle sleeve (4) and the relative axial of main shaft (1) be connected and be provided with between this axle sleeve (4) and main shaft (1) and prevent rim plate (2) circumferential direction's assembly connection device on main shaft (1).

2. The impeller for the vortex pump according to claim 1, wherein the assembly connection device comprises a bar-shaped flat key block (5) which is axially arranged and fixedly embedded on the outer wall of the main shaft (1), a flat key groove (6) which is axially arranged is formed in the inner wall of the shaft sleeve (4), when the shaft sleeve (4) is axially connected with the main shaft (1) relatively, the bar-shaped flat key block (5) is axially clamped in the corresponding flat key groove (6) to prevent the wheel disc (2) from rotating circumferentially on the main shaft (1), and a clamping abutting device which prevents the wheel disc (2) from axially shifting on the main shaft (1) is further arranged between the shaft sleeve (4) and the main shaft (1).

3. A vortex pump impeller according to claim 2, characterized in that the clamping abutting means comprises a fastening assembly, the shaft sleeve (4) is provided with a radially arranged clamping hole, the bar-shaped flat key block (5) is provided with a clamping groove, when the shaft sleeve (4) is axially connected with the main shaft (1) relatively, the clamping hole is axially opposite to the clamping groove, the fastening assembly is fixedly arranged in the clamping hole, and the penetrating end of the fastening assembly is clamped in the clamping groove to prevent the wheel disc (2) from axially shifting on the main shaft (1).

4. A vane wheel for a vortex pump according to claim 3, characterized in that the fastening assembly comprises an outer bolt (7) and an inner bolt (8), the outer bolt (7) has an axial threaded hole, the inner bolt (8) is coaxially connected to the outer bolt (7) in a spiral manner, the outer wall of the outer bolt (7) has an external thread, the inner wall of the locking hole has an internal thread, the external thread of the outer bolt (7) is spirally coupled to the internal thread of the locking hole, when the outer bolt (7) disposed in the locking hole is axially locked in the locking groove, the inner end of the inner bolt (8) is pressed against the bottom of the locking groove by rotating the inner bolt (8).

5. A vane wheel for a peripheral pump in accordance with claim 4, wherein the inner end surface of the inner bolt (8) is further vulcanized and connected with a rubber pad (9), and the inner bolt (8) abuts against the bottom of the retaining groove through the rubber pad (9).

6. A swirl pump impeller according to claim 5 characterised in that the other surface of the disk (2) remote from the sleeve (4) is provided with an annular mounting location which is provided with a locking ring (10), the locking ring (10) being releasably secured to the projecting end of the main shaft (1) when the sleeve (4) is axially connected to the main shaft (1) in the opposite direction.

7. A swirl pump impeller according to claim 6 characterised in that the inner wall of the locking ring (10) is vulcanised with a rubber gasket (11) and that when the locking ring (10) is secured to the end of the main shaft (1) the rubber gasket (11) of the locking ring (10) is in the annular mounting position and is in resilient press fit with the annular mounting position.

8. A swirl pump impeller according to claim 1 or 7, characterised in that the vanes (3) are distributed over the upper and lower surfaces of the circumferential outer rim of the disk (2), the upper and lower surfaces of the circumferential outer rim of the disk (2) being in the shape of a surrounding cusp arc.

9. A swirl pump impeller according to claim 8 characterised in that the vanes (3) are in the form of strips, the vanes (3) being radially disposed on the disc (2) and the upper and lower edges of the vanes (3) being relatively flush with the upper and lower surfaces of the disc (2).