Vacuum pump roots rotor detection device

Abstract

The utility model discloses a vacuum pump Roots rotor detection device which comprises a frame, a detection frame, a driving device, a plurality of contour sensing assemblies and a plurality of open gear surface detection assemblies. The detection frame is used for mounting a plurality of roots rotors; the driving device is used for driving the roots rotors to rotate simultaneously; the plurality of contour sensing assemblies are arranged on the frame and are used for sensing contour positions of the corresponding roots rotors respectively; the plurality of opening surface detection assemblies are all arranged on the frame, one opening surface detection assembly is arranged between every two adjacent roots rotors, and the opening surface detection assemblies are used for detecting the end face perpendicularity of the roots rotors; the Roots rotor detection device has the advantages that the profile tolerance and the opening surface perpendicularity of the Roots rotor can be detected at the same time, a plurality of Roots rotors can be detected at the same time, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a vacuum pump Roots rotor testing device. Background Technology

[0002] A Roots vacuum pump (abbreviated as Roots pump) is a type of variable displacement vacuum pump containing two lobe-shaped rotors rotating synchronously in opposite directions. There are small gaps between the rotors and between the rotors and the inner wall of the pump casing, preventing them from contacting each other. The Roots rotors in vacuum pumps have high dimensional requirements. Before use, it is necessary to check the rotor profile (i.e., whether the outer edge dimensions of the rotor are out of tolerance) and the perpendicularity of the opening face (i.e., whether the rotor end face is flat). Currently, simple measuring tools are generally used to check the rotor profile and opening face perpendicularity separately. This manual measurement method not only has significant measurement errors but also makes it difficult to check the profile and opening face perpendicularity of multiple Roots rotors simultaneously, resulting in very low testing efficiency. Utility Model Content

[0003] The main objective of this application is to provide a vacuum pump Roots rotor testing device, which aims to solve the technical problem of low testing efficiency when existing testing devices test the profile and perpendicularity of the opening surface of the Roots rotor.

[0004] To achieve the above objectives, this application provides a vacuum pump Roots rotor detection device, including a frame, a detection rack, a drive unit, multiple contour sensing components, and multiple opening surface detection components; the detection rack is used to mount multiple Roots rotors; the drive unit is used to drive multiple Roots rotors to rotate simultaneously; multiple contour sensing components are all disposed on the frame, and the multiple contour sensing components are used to sense the contour position of the corresponding Roots rotor; multiple opening surface detection components are all disposed on the frame, and an opening surface detection component is disposed between adjacent Roots rotors, and the opening surface detection component is used to detect the perpendicularity of the end face of the Roots rotor.

[0005] Optionally, the contour sensing component can be adjusted radially along the Roots rotor, and the opening surface detection component can be adjusted axially along the Roots rotor.

[0006] Optionally, the contour sensing assembly includes a needle sensor and an external threaded sleeve. The needle sensor is used to sense the contour position of the Roots rotor. The external threaded sleeve is fitted onto the needle sensor and threaded onto the frame. The extension and retraction direction of the external threaded sleeve on the frame corresponds to the radial direction of the Roots rotor.

[0007] Optionally, the outer wall of the external threaded sleeve is provided with a scale bar, the length direction of which is parallel to the extension and retraction direction of the external threaded sleeve.

[0008] Optionally, a rotating handle is connected to the end of the external threaded sleeve away from the Roots rotor.

[0009] Optionally, the opening face detection assembly includes a mounting base and a contact sensor. The mounting base is detachably connected to the corresponding position inside the frame. Contact sensors are provided on both sides of the mounting base, and the contact sensors are used to sense the end face position of the Roots rotor.

[0010] Optionally, the mounting base includes a detection block, a guide block, two limit blocks, and fastening screws. The contact sensor is disposed on the end face of the detection block. The guide block is connected to the bottom of the detection block. The inner wall of the frame has a guide groove that slides with the guide block. The length direction of the guide groove is parallel to the axial direction of the Roots rotor. The two limit blocks are respectively connected to both sides of the detection block. Fastening screws are threaded onto each limit block. The inner wall of the frame has a limit groove that mates with the corresponding fastening screw. The length direction of the limit groove is parallel to the length direction of the guide groove.

[0011] Optionally, multiple scale lines are provided on the inner wall of the frame near the edge of the guide groove along its length.

[0012] Optionally, the testing frame includes a support frame, a clamp, and a rotating shaft. The support frame is set inside the frame; the clamp is detachably connected to the top of the support frame; the rotating shaft is movably connected between the support frame and the clamp, one end of the rotating shaft is connected to the drive device, and the rotating shaft is used to install multiple Roots rotors.

[0013] Optionally, it also includes an industrial computer, with the contour sensing component and the opening surface detection component both electrically connected to the industrial computer.

[0014] The beneficial effects that this application can achieve are as follows:

[0015] During testing, this application allows multiple Roots rotors to be mounted simultaneously on a testing frame. A drive device then rotates the multiple Roots rotors at the same time. During rotation, the rotor profile can be detected by determining whether the radial end of the Roots rotor is in contact with the profile sensing component. Simultaneously, the rotor end face perpendicularity can be detected by determining whether the axial surface of the Roots rotor is in contact with the opening surface detection component. This allows for the simultaneous testing of multiple Roots rotors, and the simultaneous detection of both the rotor profile and the opening surface perpendicularity, significantly improving testing efficiency and providing high testing accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of a vacuum pump Roots rotor detection device according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the contour sensing component in an embodiment of this application;

[0019] Figure 3 This is a schematic diagram (top view) of the connection structure between the opening surface detection component and the frame in an embodiment of this application.

[0020] Figure label:

[0021] 100-Frame, 110-Guide groove, 120-Limit groove, 130-Scale line, 200-Detection frame, 210-Support frame, 220-Clamp, 230-Rotating shaft, 300-Drive device, 400-Contour sensing component, 410-Pin sensor, 420-External threaded sleeve, 421-Scale bar, 430-Rotating handle, 500-Opening surface detection component, 510-Mounting base, 511-Detection block, 512-Guide slider, 513-Limit block, 514-Fasting screw, 520-Contact sensor, 600-Industrial computer, 700-Roots rotor.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0025] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0027] Example

[0028] Reference Figures 1-3 This embodiment provides a vacuum pump Roots rotor detection device, including a frame 100, a detection frame 200, a drive device 300, multiple contour sensing components 400, and multiple opening surface detection components 500; the detection frame 200 is used to mount multiple Roots rotors 700; the drive device 300 is used to drive multiple Roots rotors 700 to rotate simultaneously; multiple contour sensing components 400 are all disposed on the frame 100, and multiple contour sensing components 400 are used to sense the contour position of the corresponding Roots rotor 700; multiple opening surface detection components 500 are all disposed on the frame 100, and one opening surface detection component 500 is disposed between adjacent Roots rotors 700, and the opening surface detection component 500 is used to detect the perpendicularity of the end face of the Roots rotor 700.

[0029] In this embodiment, during testing, multiple Roots rotors 700 can be simultaneously mounted on the testing frame 200, and then driven by the driving device 300 to rotate simultaneously. During the rotation, the rotor profile can be detected by determining whether the radial end of the Roots rotor 700 is in contact with the profile sensing component 400, and the rotor end face perpendicularity can be detected by determining whether the axial surface of the Roots rotor 700 is in contact with the opening surface detection component 500. This allows for the simultaneous testing of multiple Roots rotors 700, and the simultaneous detection of the profile and opening surface perpendicularity of the Roots rotor 700, significantly improving testing efficiency and achieving high testing accuracy.

[0030] It should be noted that the frame 100 includes a base and a baffle connected to one side of the base. A top mount is connected to the top of the baffle. Generally, the contour sensing component 400 can be mounted on the top mount, while the opening surface detection component 500 is mounted on the base. This layout is reasonable and facilitates installation and testing. Both the contour sensing component 400 and the opening surface detection component 500 can be electrically connected to an alarm, so that an alarm can be triggered when an anomaly is detected.

[0031] As an optional implementation, the contour sensing component 400 can be adjusted radially along the Roots rotor 700, thereby adjusting the distance between the detection end of the contour sensing component 400 and the Roots rotor 700 according to the radial dimension specifications of the Roots rotor 700; the opening surface detection component 500 can be adjusted axially along the Roots rotor 700, thereby adjusting the positional relationship between adjacent opening surface detection components 500 according to the axial thickness dimension of the Roots rotor 700, thus making it applicable to the detection of Roots rotors 700 of various sizes and specifications, improving versatility.

[0032] As an optional implementation, the contour sensing assembly 400 includes a needle sensor 410 and an external threaded sleeve 420. The needle sensor 410 is used to sense the contour position of the Roots rotor 700. The external threaded sleeve 420 is sleeved on the needle sensor 410 and is threadedly connected to the frame 100. The extension and retraction direction of the external threaded sleeve 420 on the frame 100 corresponds to the radial direction of the Roots rotor 700.

[0033] In this embodiment, the external threaded sleeve 420 can be threadedly connected to the top of the frame 100 (i.e., the aforementioned top seat). By rotating the external threaded sleeve 420, it can be screwed into or out of the frame 100, thereby causing the needle sensor 410 inside the external threaded sleeve 420 to move closer to or further away from the Roots rotor 700. When the Roots rotor 700 rotates, if the highest point of the end profile contacts the measuring end at the bottom of the needle sensor 410, it indicates that the Roots rotor 700 is eccentric, resulting in its profile deviation being out of tolerance. The location of the corresponding unqualified Roots rotor 700 can be marked according to the detected abnormal needle sensor 410 position, making it easy to quickly find the unqualified Roots rotor 700. At the same time, the specific degree of deviation can be detected according to the degree of contact, so as to perform data analysis and processing.

[0034] As an optional implementation, the outer wall of the external threaded sleeve 420 is provided with a scale bar 421. The length direction of the scale bar 421 is parallel to the extension and retraction direction of the external threaded sleeve 420. When the external threaded sleeve 420 is screwed in or out, the adjustment position of the external threaded sleeve 420 can be precisely controlled according to the scale bar 421, thereby ensuring the accuracy of subsequent testing.

[0035] As an alternative implementation, the end of the external threaded sleeve 420 away from the Roots rotor 700 is connected to a rotating handle 430 for easy manual operation.

[0036] As an optional implementation, the opening face detection assembly 500 includes a mounting base 510 and a contact sensor 520. The mounting base 510 is detachably connected to the corresponding position inside the frame 100. Contact sensors 520 are provided on both sides of the mounting base 510. The contact sensors 520 are used to sense the end face position of the Roots rotor 700.

[0037] In this embodiment, when the Roots rotor 700 rotates, the uneven part of its end face will come into contact with the contact sensor 520, thereby triggering an alarm. Depending on the axial thickness of the Roots rotor 700 and the measurement error requirements, the mounting base 510 can be adjusted to the corresponding installation position at the bottom of the frame 100 (i.e., the aforementioned base). The distance between the contact sensor 520 and the end face of the Roots rotor 700 is related to the measurement error requirements. The higher the measurement accuracy requirements, the smaller the distance between the contact sensor 520 and the end face of the Roots rotor 700.

[0038] As an optional implementation, the mounting base 510 includes a detection block 511, a guide block 512, two limiting blocks 513, and fastening screws 514. The contact sensor 520 is disposed on the end face of the detection block 511. The guide block 512 is connected to the bottom of the detection block 511. The inner wall of the frame 100 is provided with a guide groove 110 that slides with the guide block 512. The length direction of the guide groove 110 is parallel to the axial direction of the Roots rotor 700. The two limiting blocks 513 are respectively connected to both sides of the detection block 511. Fastening screws 514 are threadedly connected to each limiting block 513. The inner wall of the frame 100 is provided with a limiting groove 120 that mates with the corresponding fastening screw 514. The length direction of the limiting groove 120 is parallel to the length direction of the guide groove 110.

[0039] In this embodiment, when the position of the mounting base 510 needs to be adjusted, the detection block 511 is first placed at the bottom of the frame 100 and the guide slider 512 is inserted into the guide groove 110. The entire mounting base 510 is slid to the corresponding position, and then the fastening screws 514 on the limiting blocks 513 on both sides of the detection block 511 are screwed into the limiting groove 120, thereby fixing the entire mounting base 510 at the bottom of the frame 100. This achieves the adjustment and fixation of the position of the mounting base 510, which is convenient and quick to operate.

[0040] As an optional implementation, the inner wall of the frame 100 is provided with multiple scale lines 130 near the long edge of the guide groove 110. When the mounting base 510 is moved, the fixed position of the mounting base 510 can be precisely adjusted by observing the relative positional relationship between the mounting base 510 and the scale lines 130, so as to ensure the distance between the contact sensor 520 and the end face of the Roots rotor 700 and ensure measurement accuracy.

[0041] As an optional implementation, the testing frame 200 includes a support frame 210, a clamp 220, and a rotating shaft 230. The support frame 210 is disposed within the frame 100. The clamp 220 is detachably connected to the top of the support frame 210. The rotating shaft 230 is movably connected between the support frame 210 and the clamp 220. One end of the rotating shaft 230 is connected to the drive device 300. The rotating shaft 230 is used to mount multiple Roots rotors 700.

[0042] In this embodiment, during installation, multiple Roots rotors 700 are fastened to the rotating shaft 230 at certain intervals. Ball bearings (for cooperating with the rotation of the rotating shaft 230) can be installed at corresponding positions on the rotating shaft 230. Then, the ball bearings on the rotating shaft 230 are placed on the top of the support frame 210, and the clamp 220 is clamped to the upper part of the ball bearing with screws or other fasteners. At this time, the clamp 220 is also fixedly connected to the support frame 210. Finally, the drive device 300 is connected to one end of the rotating shaft 230, thereby completing the assembly of the detection position of the Roots rotor 700. The operation is convenient and quick.

[0043] It should be noted that a positioning hole for cooperating with the rotating shaft 230 can be provided on the side wall of the frame 100 (i.e., the aforementioned baffle) to facilitate quick positioning and assembly. The drive device 300 can be a manual crank shaft or a motor. A bracket for supporting the motor is provided on the frame 100. The connection end of the drive device 300 and the rotating shaft 230 can be detachably connected through connecting flanges or other connecting parts.

[0044] As an optional implementation, it also includes an industrial control computer 600, a contour sensing component 400 and an opening surface detection component 500, all of which are electrically connected to the industrial control computer 600. When a non-conforming Roots rotor 700 is detected, an alarm can be issued through the industrial control computer 600. At the same time, the location of the non-conforming Roots rotor 700 and the corresponding out-of-tolerance data can be displayed through the industrial control computer 600, which is convenient for staff to view.

[0045] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A vacuum pump Roots rotor detection device, characterized in that, include: frame; A testing frame for mounting multiple Roots rotors; A drive device is used to drive multiple Roots rotors to rotate simultaneously; Multiple contour sensing components are disposed on the frame, and the multiple contour sensing components are used to sense the contour position corresponding to the Roots rotor respectively. Multiple opening face detection components are provided, all of which are disposed on the frame. One opening face detection component is disposed between each adjacent Roots rotor. The opening face detection component is used to detect the perpendicularity of the end face of the Roots rotor.

2. The vacuum pump Roots rotor testing device as described in claim 1, characterized in that, The contour sensing component can be adjusted radially along the Roots rotor, and the opening surface detection component can be adjusted axially along the Roots rotor.

3. The vacuum pump Roots rotor detection device as described in claim 2, characterized in that, The contour sensing component includes: A needle-type sensor is used to sense the contour position of the Roots rotor; An external threaded sleeve is fitted onto the needle sensor and threaded onto the frame. The extension and retraction direction of the external threaded sleeve on the frame corresponds to the radial direction of the Roots rotor.

4. The vacuum pump Roots rotor testing device as described in claim 3, characterized in that, The outer wall of the external threaded sleeve is provided with a scale bar, and the length direction of the scale bar is parallel to the extension and retraction direction of the external threaded sleeve.

5. The vacuum pump Roots rotor testing device as described in claim 3, characterized in that, A rotating handle is connected to the end of the external threaded sleeve away from the Roots rotor.

6. The vacuum pump Roots rotor testing device as described in claim 2, characterized in that, The opening surface detection component includes: Mounting base, which is detachably connected to the corresponding position inside the frame; Contact sensors are provided on both sides of the mounting base, and the contact sensors are used to sense the end face position of the Roots rotor.

7. The vacuum pump Roots rotor testing device as described in claim 6, characterized in that, The mounting base includes: A detection block, wherein the contact sensor is disposed on the end face of the detection block; A guide block is connected to the bottom of the detection block. The inner wall of the frame is provided with a guide groove that slides with the guide block. The length direction of the guide groove is parallel to the axial direction of the Roots rotor. Two limiting blocks are respectively connected to both sides of the detection block; The fastening screws are threaded onto the limiting blocks. The inner wall of the frame is provided with a limiting groove that mates with the corresponding fastening screw. The length direction of the limiting groove is parallel to the length direction of the guide groove.

8. The vacuum pump Roots rotor testing device as described in claim 7, characterized in that, The inner wall of the frame has multiple scale lines near the edge of the guide groove along its length.

9. A vacuum pump Roots rotor testing device as described in any one of claims 1-8, characterized in that, The detection frame includes: A support frame, wherein the support frame is disposed within the frame; A clamp, which is detachably connected to the top of the support frame; A rotating shaft is movably connected between the support frame and the clamp, one end of the rotating shaft is connected to the drive device, and the rotating shaft is used to install multiple Roots rotors.

10. A vacuum pump Roots rotor testing device as described in any one of claims 1-8, characterized in that, It also includes an industrial control computer, and the contour sensing component and the opening surface detection component are both electrically connected to the industrial control computer.

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