Flow guide cone anti-loosening structure of centrifugal impeller

Abstract

The utility model relates to a flow guide cone anti-loosening structure of a centrifugal impeller, which comprises a flow guide cone anti-loosening structure body, the flow guide cone anti-loosening structure body consists of the centrifugal impeller, a flow guide cone and a locking nut, the centrifugal impeller is sleeved at one end of a rotating shaft head, the locking nut is fixedly mounted on the outer side of the other end of the rotating shaft head, and the flow guide cone is arranged on the flow guide cone anti-loosening structure body. A mounting through hole penetrating through the locking nut is formed in the middle of the locking nut, the rotating shaft can be conveniently inserted into the mounting through hole to be connected with the rotating shaft head, the outer side face of the locking nut is sleeved with one end of a flow guide cone, and a gap used for containing an anti-loosening piece is formed between the inner side wall of the end of the flow guide cone and the outer side wall of the locking nut. The other end of the flow guide cone is connected with the back face of the centrifugal impeller through a connecting piece, and an anti-rotation mechanism is further arranged on the locking nut and the flow guide cone. The mounting structure has the advantages of being simple and reasonable in structure, firm, reliable, stable in operation, convenient to mount and adjust the centrifugal compressor impeller, capable of improving product quality and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of guide cone tooling and relates to a guide cone anti-loosening structure of a centrifugal impeller. Background Art

[0002] The guide cone and the compression nut on the existing fan are one part, and the following problems exist during assembly and use: First, when the centrifugal impeller is running at high speed, the guide cone and the centrifugal impeller will become loose; second, the installation and debugging of the impeller generally requires several disassembly and assembly. Since there is generally no device to record the initial position, the position needs to be readjusted for each installation, which is time-consuming and labor-intensive.

[0003] Therefore, a centrifugal impeller guide cone anti-loosening structure is designed to overcome the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a centrifugal impeller guide cone anti-loosening structure that is simple and reasonable in structure, firm and reliable, stable in operation, convenient for installation and adjustment of centrifugal compressor impellers, and improves product quality. The utility model effectively records the initial installation position of the impeller through a simple anti-loosening sleeve flange, combined with a locking nut and a groove in the guide cone, providing important guidance for the installation and disassembly of the impeller; and the use of an anti-rotation pin can effectively prevent the impeller from loosening during high-speed operation.

[0005] The utility model is realized through the following technical scheme: a guide cone anti-loosening structure of a centrifugal impeller, comprising a guide cone anti-loosening structure body, the guide cone anti-loosening structure body consisting of a centrifugal impeller, a guide cone and a locking nut, the centrifugal impeller is sleeved on one end of the rotating shaft head, and a locking nut is fixedly installed on the outside of the other end of the rotating shaft head, and a mounting through hole penetrating the locking nut is provided at the middle position of the locking nut, which is used to facilitate the insertion of the rotating shaft into the mounting through hole and connect with the rotating shaft head, one end of the guide cone is sleeved on the outer surface of the locking nut, and a gap for placing an anti-loosening part is provided between the inner side wall of the end of the guide cone and the outer side wall of the locking nut, the other end of the guide cone is connected to the back side of the centrifugal impeller through a connecting piece, and an anti-rotation mechanism is also provided on the locking nut and the guide cone, which is used to ensure the anti-loosening effect of the guide cone.

[0006] Ensure that the connection between the shaft head and the shaft is fixed.

[0007] Preferably, the connecting piece is a claw provided at the end of the guide cone and a slot provided on the back of the centrifugal impeller and matching the claw. Each claw is inserted into the slot to achieve the clamping and fixation between the guide cone and the centrifugal impeller. An anti-rotation pin is also installed on one side of the slot on the back of the centrifugal impeller to prevent the guide cone from shifting during operation.

[0008] Ensure that the connection between the shaft head and the shaft is fixed.

[0009] Preferably: the anti-rotation mechanism is at least two anti-rotation rounded grooves arranged on the end face of the locking nut away from the centrifugal impeller, and at least one limiting rounded groove arranged on the end face of the guide cone away from the centrifugal impeller, the anti-loosening part is an anti-loosening sleeve, the anti-loosening sleeve is inserted into the gap set between the locking nut and the guide cone, and the anti-loosening sleeve is partially deformed by manual or mechanical knocking, and is respectively stuck in each anti-rotation rounded groove and each limiting rounded groove, thereby completing the flanging fixation of the anti-loosening sleeve, which is used to record the initial installation position of the centrifugal impeller.

[0010] Preferably: the locking nut is partially exposed on the guide cone, and its exposed part has a trapezoidal structure, which is used as a limit block when the shaft head is connected and installed with the shaft, which is convenient for assembly. The mounting through hole of the locking nut consists of a hexagonal limiting hole away from the centrifugal impeller and a circular assembly hole, which is used to ensure the connection and fixation between the shaft head and the shaft.

[0011] Preferably: the locking nut is partially exposed on the guide cone, and its exposed part has a trapezoidal structure, which is used as a limit block when the shaft head is connected and installed with the shaft, which is convenient for assembly. The mounting through hole of the locking nut consists of a hexagonal limiting hole away from the centrifugal impeller and a circular assembly hole, which is used to ensure the connection and fixation between the shaft head and the shaft.

[0012] Preferably, there are two limiting rounded corner grooves, which are symmetrically arranged at 180 degrees on the edge of the locking nut. There is one limiting rounded corner groove, and the angles between the two limiting rounded corner grooves are 90 degrees, forming a triangular arrangement to ensure the fixing effect of the anti-loosening sleeve after flanging.

[0013] The beneficial effects of the utility model are as follows:

[0014] The centrifugal impeller guide cone anti-loosening structure designed by the utility model effectively records the initial installation position of the impeller through a simple anti-loosening sleeve flange, combined with the locking nut and the groove of the guide cone, which plays an important guiding role in the assembly and disassembly of the impeller; combined with the use of the anti-rotation pin, the impeller can be effectively prevented from loosening when running at high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the anti-rotation mechanism of the guide cone in the utility model.

[0017] Figure 3 It is a schematic diagram of the anti-rotation mechanism of the locking nut in the present utility model. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to more clearly understand the purpose, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0019] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inside", "outside", "horizontal", and "vertical" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or original referred to must have a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0020] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1 The cam 3 is provided with a screw thread on the top of the cam 3, and the cam 3 is provided with a screw thread on the top of the cam 3, so that the cam 3 can be rotated to rotate.

[0021] The connecting piece is a claw 6 arranged at the end of the guide cone 2 and a slot 7 arranged on the back of the centrifugal impeller and matching the claw 6. Each claw 6 is inserted into the slot 7 respectively to achieve the clamping and fixation between the guide cone 2 and the centrifugal impeller 1. An anti-rotation pin 8 is also installed on one side of the slot 7 on the back of the centrifugal impeller 1 to prevent the guide cone 2 from shifting during operation.

[0022] like Figure 2-3 As shown, the anti-rotation mechanism is at least two anti-rotation rounded grooves 9 arranged on the end face of the locking nut 3 away from the centrifugal impeller 1, and at least one limiting rounded groove 10 arranged on the end face of the guide cone 2 away from the centrifugal impeller 1. The anti-loosening part is an anti-loosening sleeve 11, and the anti-loosening sleeve 11 is inserted into the gap set between the locking nut 3 and the guide cone 2. The anti-loosening sleeve 11 is partially deformed by manual or mechanical knocking and is respectively stuck in each anti-rotation rounded groove 9 and each limiting rounded groove 10, completing the flanging fixation of the anti-loosening sleeve 11, which is used to record the initial installation position of the centrifugal impeller.

[0023] The locking nut 3 is partially exposed from the guide cone 2, and its exposed part has a trapezoidal structure, which is used as a limit block 12 when the shaft head is connected and installed with the shaft, which is convenient for assembly. The installation through hole of the locking nut 3 is composed of a hexagonal limit hole 14 away from the centrifugal impeller and a circular assembly hole 13, which is used to ensure the connection and fixation between the shaft head 4 and the shaft.

[0024] There are two limiting rounded corner grooves 9, which are arranged symmetrically at 180 degrees on the edge of the locking nut 3. There is one limiting rounded corner groove 10, and the angles between the two limiting rounded corner grooves 9 and the limiting rounded corner groove 1 are both 90 degrees, forming a triangular arrangement to ensure the fixing effect of the anti-loosening sleeve 11 after flanging.

[0025] The installation steps of the anti-loosening structure of the utility model are as follows:

[0026] 1. Such as Figure 1 As shown, the anti-loosening structure is composed of an anti-rotation pin, a locking nut, an anti-loosening piece (anti-loosening sleeve) and a guide cone;

[0027] 2. Such as Figure 2-3 As shown, two anti-rotation rounded grooves are arranged symmetrically at 180 degrees on the locking nut during processing; a limiting rounded groove is arranged on the guide cone;

[0028] 3. During the first impeller assembly, after the impeller of this stage is assembled according to the design pressure, the anti-loosening sleeve shall be manually flanged and fixed according to the relative position formed by the three grooves of the guide cone and the locking nut.

[0029] 4. This structure is simple, but can effectively record the relative position of the impeller locking nut and the guide cone. The initial assembly position can be used for subsequent disassembly and assembly of the impeller. Combined with the use of the anti-rotation pin, it can ensure that the centrifugal impeller can be effectively prevented from loosening during high-speed operation.

[0030] The utility model effectively records the initial installation position of the impeller through a simple anti-loosening sleeve flange, combined with the locking nut and the groove of the guide cone, which plays an important guiding role in the assembly and disassembly of the impeller; combined with the use of the anti-rotation pin, the centrifugal impeller can be effectively prevented from loosening when running at high speed.

[0031] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.

Claims

1. A centrifugal impeller guide cone anti-loosening structure, comprising a guide cone anti-loosening structure body, characterized in that: The guide cone anti-loosening structure body consists of a centrifugal impeller (1), a guide cone (2) and a locking nut (3), the centrifugal impeller (1) is sleeved on one end of the rotating shaft head (4), and a locking nut (3) is fixedly installed on the outside of the other end of the rotating shaft head (4), and a mounting through hole (5) penetrating the locking nut (3) is provided at the middle position of the locking nut (3), which is used to facilitate the rotating shaft to be inserted into the mounting through hole (5) and connected to the rotating shaft head (4), one end of the guide cone (2) is sleeved on the outer surface of the locking nut (3), and a gap for placing an anti-loosening member is provided between the inner side wall of the end of the guide cone (2) and the outer side wall of the locking nut (3), the other end of the guide cone (2) is connected to the back of the centrifugal impeller (1) through a connecting piece, and an anti-rotation mechanism is also provided on the locking nut (3) and the guide cone (2) to ensure the anti-loosening effect of the guide cone (2).

2. The guide cone anti-loosening structure of the centrifugal impeller according to claim 1, characterized in that: The connecting member comprises a claw (6) provided at the end of the guide cone (2) and a slot (7) provided on the back of the centrifugal impeller and matching the claw (6). Each claw (6) is inserted into the slot (7) to achieve the locking and fixing between the guide cone (2) and the centrifugal impeller (1). An anti-rotation pin (8) is also installed on one side of the slot (7) and on the back of the centrifugal impeller (1) to prevent the guide cone (2) from shifting during operation.

3. The guide cone anti-loosening structure of the centrifugal impeller according to claim 1 or 2, characterized in that: The anti-rotation mechanism comprises at least two anti-rotation rounded grooves (9) provided on the end surface of the locking nut (3) away from the centrifugal impeller (1), and at least one limiting rounded groove (10) provided on the end surface of the guide cone (2) away from the centrifugal impeller (1). The anti-loosening member is an anti-loosening sleeve (11). The anti-loosening sleeve (11) is inserted into a gap provided between the locking nut (3) and the guide cone (2). The anti-loosening sleeve (11) is partially deformed by manual or mechanical knocking and is respectively inserted into each anti-rotation rounded groove (9) and each limiting rounded groove (10), thereby completing the flanging fixation of the anti-loosening sleeve (11).

4. The guide cone anti-loosening structure of the centrifugal impeller according to claim 3, characterized in that: The locking nut (3) is partially exposed outside the guide cone (2), and the exposed portion is in a trapezoidal structure, which is used as a limit block (12) when the rotating shaft head is connected and installed with the rotating shaft, so as to facilitate assembly. The mounting through hole of the locking nut (3) is composed of a hexagonal limit hole (14) away from the centrifugal impeller and a circular assembly hole (13), which is used to ensure the connection and fixation between the rotating shaft head (4) and the rotating shaft.

5. The guide cone anti-loosening structure of the centrifugal impeller according to claim 3, characterized in that: The number of the limiting rounded corner grooves (9) is two, which are symmetrically arranged at 180 degrees on the edge of the locking nut (3). The number of the limiting rounded corner groove (10) is one, and the angles between the two limiting rounded corner grooves (9) and the limiting rounded corner groove (1) are both 90 degrees, forming a triangular arrangement, which is used to ensure the fixing effect of the anti-loosening sleeve (11) after flanging.

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