Impeller blade measuring tool

Abstract

The utility model discloses an impeller blade measuring tool which comprises a steel ruler, a movable joint, a measuring head, a rivet, a screw and a nut. The steel ruler is a long-strip-shaped ruler and used for positioning the measuring tool to the inlet end face or the outlet outer circle of the impeller. The movable joint is connected with the straight steel ruler through a screw and a nut, and can rotate and be fixed on the straight steel ruler; the movable joints are connected with each other through rivets, and the movable joints can rotate and are fixed; the measuring head is connected with the movable joint through a rivet and can rotate and be fixed on the movable joint. The postures of the measuring head and the movable joint can be flexibly adjusted, so that the measuring head can abut against any position on the blade axial surface section line, and the postures of the measuring head and the movable joint can be kept unchanged. The device is simple in structure, easy to manufacture and convenient to use, can accurately measure the axial surface section line of the impeller blade, and provides reliable technical support for design and manufacturing detection of the blade.

Description

Technical Field

[0001] The utility model relates to a measuring tool, in particular to an impeller blade measuring tool. Background Art

[0002] The impeller is an important flow-through component of a centrifugal pump, and its performance will directly affect the efficiency of the centrifugal pump. During the design and manufacturing process of the impeller, it is necessary to accurately measure the axial section of the blade to compare the degree of correspondence between manufacturing and design. Traditional measurement methods usually require the use of complex equipment and tools, which are cumbersome to operate and usually require high capital investment. Therefore, a simple, easy-to-use, and low-cost measurement tool is needed to meet the needs. Utility Model Content

[0003] The utility model aims to provide an impeller blade measuring tool which has a simple structure, is easy to manufacture and convenient to use, and can accurately measure the axial surface section of the blade.

[0004] In order to achieve the above purpose, the utility model provides a centrifugal impeller blade measuring tool, including a steel ruler, a movable joint, a probe, a rivet, a screw and a nut. The steel ruler is the main part of the measuring tool, which is used to position the measuring tool on the impeller inlet end face or abut against the impeller outer circle.

[0005] As a preferred technical means, the movable joint is connected to the steel ruler by screws and nuts, and can be rotated and fixed on the steel ruler. The number of movable joints can be adjusted as needed to accommodate impeller blades of different sizes. The movable joints are connected by rivets, and the probe is connected to the movable joint by rivets, and can be freely rotated and fixed at the rivet connection. The probe is a metal sheet with a pointed end, and its shape and size can be designed as needed to accommodate blades of different shapes. The probe and the movable joint can flexibly adjust their postures so that the probe can reach any position on the section line of the blade axis, and the postures of the probe and the movable joint can be kept unchanged.

[0006] Preferably, the steel ruler is a long strip ruler, which is used to locate the impeller inlet end face or outlet outer circle. The steel ruler has uniform scales for reading the positioning point.

[0007] Preferably, the movable joint is a waist-shaped long strip of metal sheet, and there are several of them.

[0008] The utility model has the advantages of simple structure, easy manufacture, convenient use, and the ability to accurately measure the axial surface section of the blade, thus providing reliable technical support for the design and manufacture of the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a schematic diagram of measuring the axial section of the back side of a blade according to the utility model.

[0011] Figure 3 It is a schematic diagram of the blade shaft cross section of the utility model.

[0012] Figure 4 It is a schematic diagram of measuring the axial section of the blade working surface according to the utility model.

[0013] In the figure: 100-impeller blade measuring tool, 1-steel ruler, 101-scale, 2-movable joint, 3-probe, 4-rivet, 5-screw, 6-nut, 200-impeller, 201-axial section of blade back side, 202-axial section of blade working surface. DETAILED DESCRIPTION

[0014] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions.

[0015] like Figure 1 As shown, an impeller disassembly device includes a steel ruler 1, an active joint 2, a probe 3, a rivet 4, a screw 5 and a nut 6. The active joint 2 is connected to the steel ruler 1 by the screw 5 and the nut 6, the active joints 2 are connected by the rivet 4, the probe 3 is connected to the active joint 2 by the rivet 4, and can be freely rotated and fixed at the connection of the rivet 4. The probe 3 and the active joint 2 can flexibly adjust their postures, so that the probe 2 can abut against any position on the axial surface section 201 of the blade working surface or the axial surface section 202 of the blade back surface, and the postures of the probe 3 and the active joint 2 can be kept unchanged.

[0016] In this embodiment, before measurement, an axial line is drawn on the blade working surface or back surface of the impeller 200, the impeller inlet end surface, and the impeller outlet outer circumferential surface using a height gauge, such as Figure 2 The axial section line 201 of the blade working surface of the example, Figure 3 An exemplary blade back axial section 202 .

[0017] In this embodiment, before measurement, Figure 4 As shown, the axial projection of the impeller is drawn in advance.

[0018] In this embodiment, the above structure is used to measure the axial section of the back of the impeller blade. Figure 2 and Figure 3, place the side of the steel ruler 1 of the impeller blade measuring tool 100 on a certain axial surface line to be measured on the impeller inlet end face, and then adjust the movable joint 2 and the probe 3, and make the tip of the probe 3 contact a certain point on the axial surface section 201 on the back side of the blade. At this time, read the location of the steel ruler, that is, record the scale 101 of the steel ruler 1 and the impeller inlet end face, and keep the posture of the movable joint 2 and the probe 3 unchanged, then put the impeller blade measuring tool 100 on the axial surface projection diagram, and position it with the previously recorded steel ruler 1 and the scale 101 of the impeller inlet end face, and draw a point at the position of the tip of the probe 3. Repeat the above steps, measure several points on the axial section line of the blade to be measured, and then connect these points, which is the axial surface section of the back side of the blade on this axial surface. Using the same method as above, the axial surface sections of the back sides of the remaining blades can be measured.

[0019] In this embodiment, the above structure is used to measure the axial section of the impeller blade working surface. Figure 3 and Figure 4 , place the side of the steel ruler 1 of the impeller blade measuring tool 100 on a certain axial surface line of the impeller outlet outer circle to be measured, and then adjust the movable joint 2 and the probe 3, and make the tip of the probe 3 contact a certain point on the axial surface section 202 of the blade working surface. At this time, read the location of the positioning point of the steel ruler, that is, record the scale 101 of the steel ruler 1 and the impeller outlet outer circle, and keep the posture of the movable joint 2 and the probe 3 unchanged, then put the impeller blade measuring tool 100 on the axial surface projection diagram, and position it with the previously recorded steel ruler 1 and the scale 101 of the impeller outlet outer circle, and draw a point at the position of the tip of the probe 3. Repeat the above steps, measure several points on the axial section line of the measured blade working surface, and then connect these points, which is the axial surface section of the blade working surface of the axial surface. Using the same method as above, the axial surface sections of the remaining blade working surfaces can be measured.

Claims

1. An impeller blade measuring tool (100), comprising a steel ruler (1), a movable joint (2), a probe (3), a rivet (4), a screw (5) and a nut (6), characterized in that: The steel ruler (1) and the movable joint (2) are connected via screws (5) and nuts (6), and the movable joints (2) and the movable joints (2) and the measuring head (3) are connected via rivets (4). The connection of the rivets (4) can be freely rotated and fixed.

2. The impeller blade measuring tool (100) according to claim 1, characterized in that: The steel ruler (1) is a long strip-shaped ruler, and is used to locate the inlet end face or the outlet outer circle of the impeller (200).

3. The impeller blade measuring tool (100) according to claim 1, characterized in that: The steel ruler (1) is provided with uniform scales (101) for reading the position of the positioning point.

4. The impeller blade measuring tool (100) according to claim 1, characterized in that: The movable joint (2) is a waist-shaped long metal sheet.

5. The impeller blade measuring tool (100) according to claim 1, characterized in that: The number of the activity sections (2) is several.

6. The impeller blade measuring tool (100) according to claim 1, characterized in that: The measuring head (3) is a metal sheet with a pointed tip at one end.

Images