CN213775805U - Connection structure of impeller and shaft - Google Patents

Abstract

The utility model relates to a connection structure technical field discloses a connection structure of impeller and axle, locate including axle and cover the impeller of the one end of axle, be equipped with the connecting hole on the impeller, the connecting hole with the shaft key is connected, will the impeller is kept away from one side of axle is marked as the work side, the connecting hole orientation the one end shutoff of work side. The utility model discloses a set up the connecting hole and be connected with the axle key, can improve the transmission stability of impeller and axle, prevent that equipment from damaging.

Description

Connection structure of impeller and shaft

Technical Field

The utility model relates to a connection structure technical field especially relates to a connection structure of impeller and axle.

Background

At present, impellers of desulfurization pumps and slurry pumps for conveying solid particles are usually sleeved on a shaft and connected with the shaft through threads, transmission is carried out through the connecting structure, and the impellers and the shaft can be loosened when the equipment is stopped or a driving device drives the impellers to rotate reversely, so that the equipment is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a connection structure of impeller and axle can solve the problem that the impeller reversal leads to equipment to damage.

In order to realize the above-mentioned purpose, the utility model provides a connection structure of impeller and axle, locate including axle and cover the impeller of the one end of axle, be equipped with the connecting hole on the impeller, the connecting hole with the shaft key is connected, will the impeller is kept away from one side of axle is marked as the working side, the connecting hole orientation the one end shutoff of working side.

Optionally, the connection structure of the impeller and the shaft further comprises a first shaft sleeve and a second shaft sleeve, the first shaft sleeve is sleeved outside the shaft, the second shaft sleeve is fixedly connected to the impeller and sleeved outside the shaft, and the first shaft sleeve and the second shaft sleeve are detachably connected.

Optionally, a first sealing ring is arranged between the second shaft sleeve and the impeller.

Optionally, the second shaft sleeve is connected to the impeller through a connecting member, and a minimum distance between the connecting member and the shaft is greater than a minimum distance between the first seal ring and the shaft.

Optionally, the connecting structure of the impeller and the shaft further comprises a bearing body and a pump cover, the shaft is arranged in the bearing body, the pump cover is arranged on the bearing body and sleeved outside the second shaft sleeve, and the pump cover is connected with the second shaft sleeve in a sealing mode.

Optionally, a sealing assembly is arranged on the pump cover, and the pump cover is sleeved on the outer wall of the second shaft sleeve through the sealing assembly.

Optionally, a second sealing ring is arranged between the sealing assembly and the second shaft sleeve.

Optionally, a circumferential limiting groove is formed in the shaft, a half-dividing snap ring is arranged in the limiting groove, the half-dividing snap ring protrudes out of the circumferential surface of the shaft on two sides of the limiting groove, and the first shaft sleeve and the second shaft sleeve respectively abut against two end surfaces of the half-dividing snap ring.

Optionally, the first shaft sleeve is provided with an internal thread, the second shaft sleeve is provided with an external thread matched with the internal thread, and the internal thread is detachably connected with the external thread.

Optionally, a concave spigot is arranged on the impeller, and a convex spigot matched with the concave spigot is arranged on the second shaft sleeve.

The embodiment of the utility model provides a connection structure of impeller and axle, compare with prior art, its beneficial effect lies in:

the utility model discloses connection structure of impeller and axle, a serial communication port, locate including axle and cover the impeller of the one end of axle, be equipped with the connecting hole on the impeller, the connecting hole with axle key connection will the impeller is kept away from one side of axle is marked as the working side, the connecting hole orientation the one end shutoff of working side. Through setting up the connecting hole and being connected with the axle key, can improve the transmission stability of impeller and axle, also can not appear among the prior art impeller reversal lead to with the problem of the pine of axle pine, prevent equipment damage.

Drawings

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

Fig. 2 is a schematic view of the structure of the shaft of the present invention.

Fig. 3 is a schematic structural diagram of the impeller of the present invention.

Fig. 4 is a schematic structural diagram of the first sleeve of the present invention.

Fig. 5 is a schematic structural diagram of the second shaft sleeve of the present invention.

In the figure, 1, axis; 2. an impeller; 3. a first bushing; 4. a second shaft sleeve; 5. a bearing body; 6. A pump cover; 7. dividing into half snap rings; 8. a keyway; 11. a limiting groove; 21. connecting holes; 22. a concave spigot; 31. an internal thread; 41. a first seal ring; 42. a connecting member; 43. a second seal ring; 44. An external thread; 45. a male end; 61. and (7) sealing the assembly.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the connection structure of an impeller 2 and a shaft 1 according to the preferred embodiment of the present invention includes a shaft 1 and an impeller 2 sleeved on one end of the shaft 1, wherein the impeller 2 is provided with a connection hole 21, the connection hole 21 is connected with the shaft 1 in a key manner, one side of the impeller 2 away from the shaft 1 is marked as a working side, and one end of the connection hole 21 facing the working side is blocked. Through setting up impeller 2 and 1 key-type connection of axle, all set up keyway 8 on impeller 2 and the axle 1, can improve the transmission stability of impeller 2 and axle 1, also can not appear among the prior art impeller 2 reversal lead to with the problem of the pine of axle 1 pine take off, prevent that equipment from damaging. One end of the connecting hole 21 facing the working side is plugged, so that materials on the working side can be prevented from contacting the shaft 1 through the connecting hole 21, and the shaft 1 is protected from corrosion. In the prior art, the connecting hole 21 is a through hole, the shaft 1 penetrates through the through hole, and the nut of the impeller 2 is arranged at one end of the working side to realize plugging. In this embodiment, only set up the one end opening that connecting hole 21 deviates from the work side, not only prevented that the material from contacting with axle 1 through the fit clearance of impeller 2 nut, still avoided leading to the chaotic problem of material flow because of impeller 2 nut appearance is not conform to the fluid flow law to impeller 2's work efficiency has been improved. In this embodiment, the impeller 2 is integrally formed, and a curve for facilitating the flow of the material can be further arranged on the surface of the working side, so that the working efficiency is improved.

In this embodiment, referring to fig. 3-5, the connection structure of the impeller 2 and the shaft 1 further includes a first shaft sleeve 3 and a second shaft sleeve 4, the first shaft sleeve 3 is sleeved outside the shaft 1, the second shaft sleeve 4 is fixedly connected to the impeller 2 and sleeved outside the shaft 1, and the first shaft sleeve 3 is detachably connected to the second shaft sleeve 4. Before mounting, the first sleeve 3 is placed on the shaft 1 and the second sleeve 4 is placed on the impeller 2, after which the two are mounted together. A first seal ring 41 is provided between the second sleeve 4 and the impeller 2. The sealing performance between the second shaft sleeve 4 and the impeller 2 is ensured, and materials are prevented from contacting the shaft 1 through a gap between the second shaft sleeve 4 and the impeller 2. The second shaft sleeve 4 is connected with the impeller 2 through a connecting piece 42, and the minimum distance between the connecting piece 42 and the shaft 1 is larger than that between the first sealing ring 41 and the shaft 1. With this arrangement, the connecting piece 42 is arranged closer to the edge of the component, and the impeller 2 and the second hub 4 are sealed when the connecting piece 42 is mounted. The impeller 2 is provided with a concave spigot 22, and the second shaft sleeve 4 is provided with a convex spigot 45 matched with the concave spigot 22. The structure is convenient to install and position, reduces the installation difficulty and simplifies the installation operation.

The impeller 2 and shaft 1 connecting structure of this embodiment further comprises a bearing body 5 and a pump cover 6, the shaft 1 is arranged in the bearing body 5, the pump cover 6 is arranged on the bearing body 5 and sleeved outside the second shaft sleeve 4, and the pump cover 6 is connected with the second shaft sleeve 4 in a sealing manner. The pump cover 6 is provided with a sealing assembly 61, and the pump cover 6 is sleeved on the outer wall of the second shaft sleeve 4 through the sealing assembly 61. During installation, the shaft 1 can be installed in the bearing body 5, the pump cover 6 is installed, the sealing assembly 61 is installed on the pump cover 6, and finally the second shaft sleeve 4 provided with the impeller 2 and the first shaft sleeve 3 are installed together. A second seal ring 43 is disposed between the seal assembly 61 and the second bushing 4. Further improving the sealing performance. In this embodiment, the first sleeve 3 is provided with an internal thread 31, the second sleeve 4 is provided with an external thread 44 matching with the internal thread 31, and the internal thread 31 is detachably connected with the external thread 44. In other embodiments, the setting can be performed according to actual situations.

In this embodiment, referring to fig. 2, a circumferential limiting groove 11 is formed on the shaft 1, a half-split retaining ring 7 is disposed in the limiting groove 11, the half-split retaining ring 7 protrudes out of the circumferential surface of the shaft 1 at two sides of the limiting groove 11, and the first shaft sleeve 3 and the second shaft sleeve 4 respectively abut against two end surfaces of the half-split retaining ring 7. The arrangement can limit the first shaft sleeve 3 and the second shaft sleeve 4, and the operation is simpler and more convenient during installation.

To sum up, the embodiment of the utility model provides a connection structure of impeller 2 and axle 1, it is through setting up connecting hole 21 and axle 1 key-type connection, can improve the transmission stability of impeller 2 and axle 1, prevents that equipment from damaging.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a connection structure of impeller and axle, its characterized in that locates including axle and cover the impeller of the one end of axle, be equipped with the connecting hole on the impeller, the connecting hole with the axle key is connected, will the impeller is kept away from one side of axle is marked as the working side, the connecting hole orientation the one end shutoff of working side.

2. The connecting structure of the impeller and the shaft according to claim 1, further comprising a first shaft sleeve and a second shaft sleeve, wherein the first shaft sleeve is sleeved outside the shaft, the second shaft sleeve is fixedly connected to the impeller and sleeved outside the shaft, and the first shaft sleeve and the second shaft sleeve are detachably connected.

3. The structure according to claim 2, wherein a first seal ring is provided between the second bushing and the impeller.

4. A connection of an impeller and a shaft according to claim 3, wherein the second bushing and the impeller are connected by a connection member having a minimum distance from the shaft greater than a minimum distance of the first seal ring from the shaft.

5. The impeller and shaft connecting structure according to claim 2, further comprising a bearing body and a pump cover, wherein the shaft is disposed in the bearing body, the pump cover is disposed on the bearing body and sleeved outside the second shaft sleeve, and the pump cover is hermetically connected with the second shaft sleeve.

6. The impeller and shaft connecting structure according to claim 5, wherein a seal assembly is provided on the pump cover, and the pump cover is sleeved on the outer wall of the second shaft sleeve through the seal assembly.

7. The impeller to shaft connection of claim 6, wherein a second seal ring is disposed between said seal assembly and said second bushing.

8. The impeller-shaft connecting structure according to claim 2, wherein a circumferential limiting groove is formed in the shaft, a half-split snap ring is disposed in the limiting groove, the half-split snap ring protrudes from the circumferential surface of the shaft on both sides of the limiting groove, and the first shaft sleeve and the second shaft sleeve respectively abut against both end surfaces of the half-split snap ring.

9. The impeller and shaft connecting structure according to claim 2, wherein the first sleeve is provided with an internal thread, the second sleeve is provided with an external thread matched with the internal thread, and the internal thread is detachably connected with the external thread.

10. The connection structure of the impeller and the shaft as claimed in claim 2, wherein the impeller is provided with a female spigot, and the second shaft sleeve is provided with a male spigot matched with the female spigot.

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