Ultrafiltration membrane integrity image acquisition device

Abstract

The utility model discloses an ultrafiltration membrane integrity image acquisition device which comprises a guide rail, a sliding assembly, a camera and a driving mechanism, the guide rail is mounted on one side of a water production pipe of the ultrafiltration membrane frame; the sliding assembly comprises a base and rolling wheels arranged on the base. The camera is installed on the base through the adjusting mechanism, the adjusting mechanism comprises a supporting arm, a rotating shaft and a rotating seat, the rotating seat is rotatably connected with the supporting arm through the rotating shaft, and the camera is fixed on the rotating seat. According to the device, automatic movement and angle adjustment of the camera are realized, and the image acquisition efficiency is improved; the movement stability is improved through the cooperation of the V-shaped rollers and the V-shaped grooves; and the annular LED light source provides stable illumination, so that the image quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of ultrafiltration membrane detection technology, and in particular to an ultrafiltration membrane integrity image acquisition device. Background Technology

[0002] During use, ultrafiltration membranes require regular integrity testing to ensure filtration effectiveness. Currently, ultrafiltration membrane integrity testing is mainly conducted through pressure decay experiments. During the experiment, images of the transparent section of the permeate tube of each ultrafiltration membrane element are acquired, and the presence of air bubbles in the images is analyzed to determine the extent of membrane fiber breakage.

[0003] In actual factory image acquisition, handheld camera devices are typically used. This image acquisition method presents the following technical problems:

[0004] First, handheld shooting cannot guarantee a fixed relative position between the camera and the water pipe, resulting in inconsistent angles and distances in the acquired images. This inconsistency in image parameters affects subsequent image analysis and reduces the accuracy of the detection results.

[0005] Secondly, the permeate pipe of ultrafiltration membrane elements is usually installed at a high position, requiring inspectors to use a mobile platform to acquire images. This not only increases the difficulty of acquisition but also poses safety hazards. Furthermore, the inconvenient acquisition location can easily lead to operator fatigue, affecting the quality of image acquisition.

[0006] Furthermore, handheld shooting lacks stable lighting conditions. The brightness and sharpness of images captured at different times and under different ambient light conditions vary, and this instability in image quality directly affects the accuracy of bubble recognition. Especially in low light conditions, the captured images may suffer from underexposure or blurriness.

[0007] Furthermore, existing image acquisition methods involve manual, one-by-one shooting, resulting in low acquisition efficiency. Given the large number of ultrafiltration membrane elements, this method is time-consuming and prone to missing images of certain permeate pipes, failing to guarantee the completeness and continuity of the detection. Utility Model Content

[0008] The purpose of this invention is to provide an ultrafiltration membrane integrity image acquisition device to solve the technical problem of inconvenient image acquisition during the ultrafiltration membrane integrity detection process in the prior art.

[0009] To achieve the above objectives, this utility model provides an ultrafiltration membrane integrity image acquisition device, comprising: a guide rail, which is installed on one side of the permeate pipe of the ultrafiltration membrane holder; a sliding assembly, which is slidably engaged with the guide rail; a camera, which is mounted on the sliding assembly and is used to capture images of the ultrafiltration membrane permeate pipe; and a driving mechanism, which is connected to the sliding assembly and is used to drive the sliding assembly to move along the guide rail.

[0010] Furthermore, the sliding assembly includes: a base; and a plurality of rollers disposed on the base and in rolling cooperation with the guide rail.

[0011] Specifically, the roller is a V-shaped roller, and the guide rail is provided with a V-shaped groove that cooperates with the V-shaped roller.

[0012] Furthermore, the base is provided with an adjustment mechanism, and the camera is mounted on the base through the adjustment mechanism.

[0013] More specifically, the adjustment mechanism includes: a support arm fixed to the base; a rotating shaft horizontally disposed on the support arm; a rotating seat rotatably connected to the support arm via the rotating shaft; and a camera fixed to the rotating seat, wherein the shooting direction of the camera is perpendicular to the rotation direction of the rotating seat.

[0014] Furthermore, the device also includes a lighting system arranged around the camera, specifically a ring-shaped LED light source.

[0015] Furthermore, limit blocks are provided at both ends of the guide rail.

[0016] Furthermore, the driving mechanism includes: a stepper motor; a reducer, the input end of which is connected to the output shaft of the stepper motor; and a transmission shaft, one end of which is connected to the output end of the reducer. The transmission shaft is drively connected to the sliding assembly.

[0017] This invention employs a guide rail and sliding component structure. The sliding component is driven by a drive mechanism to move along the guide rail, thereby achieving automated movement of the camera and improving image acquisition efficiency. At the same time, since the guide rail is fixedly installed on one side of the ultrafiltration membrane holder's permeate pipe, the camera and the permeate pipe maintain a fixed relative position, ensuring the uniformity of parameters in the acquired images and improving the accuracy of subsequent analysis.

[0018] Furthermore, the camera's shooting angle can be flexibly adjusted through an adjustment mechanism to meet the shooting needs of different installation positions; the ring LED light source surrounding the camera provides stable and uniform lighting conditions for the water production pipe, effectively solving the image quality problem caused by insufficient ambient light; the cooperative structure of the V-shaped roller and the V-shaped groove of the guide rail ensures that the sliding component moves smoothly and reliably, reducing shaking during movement and further improving the image acquisition quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the ultrafiltration membrane integrity image acquisition device in an embodiment of this utility model.

[0020] In the diagram, 1 is the guide rail; 2 is the limit block; 3 is the base; 4 is the roller; 5 is the camera; 61 is the support arm; 62 is the rotating shaft; 63 is the rotating seat; and 7 is the ring-shaped LED light source. Detailed Implementation

[0021] The present invention will now be described with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the scope of the invention.

[0022] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0025] This utility model provides an ultrafiltration membrane integrity image acquisition device, please refer to... Figure 1 The system includes: a guide rail 1, a sliding assembly, a camera 5, and a drive mechanism. The guide rail 1 is installed on one side of the permeate pipe of the ultrafiltration membrane holder. Specifically, a mounting bracket is set at regular intervals on the ultrafiltration membrane holder, and the guide rail 1 is fixed to one side of the permeate pipe by the mounting bracket. The guide rail 1 is made of aluminum profile, and its length is set according to the size of the ultrafiltration membrane holder.

[0026] The sliding assembly includes a base 3 and four rollers 4. The base 3 is made of aluminum alloy and has a rectangular structure.

[0027] In a specific example, the roller 4 includes a V-shaped roller, and the guide rail 1 has symmetrically arranged V-shaped grooves on both sides that mate with the V-shaped roller. The groove angle of the V-shaped groove is 90 degrees. Specifically, two V-shaped rollers are arranged at each of the front and rear ends of the base 3, forming a four-point support structure to ensure motion stability. It can be understood that in this embodiment, the cross-section of the roller 4 presents a V-shaped edge, the roller edge being a conical surface, and the conical surfaces on the left and right sides forming a V-shape with an angle of 45 degrees, matching the 90-degree groove angle of the guide rail's V-groove. The conical surface of the V-shaped roller contacts the two sides of the V-groove of the guide rail, forming a two-point contact to ensure precise guidance. This is similar to a V-shaped wedge rolling in a V-groove. It automatically centers, provides accurate guidance, and ensures smooth movement.

[0028] Furthermore, the base 3 is provided with an adjustment mechanism, and the camera 5 is mounted on the base 3 through the adjustment mechanism.

[0029] Specifically, the adjustment mechanism includes a support arm 61, a rotating shaft 62, and a rotating seat 63. In one specific example, the support arm 61 is made of square steel and is fixed to the base 3 with screws. The rotating shaft 62 is horizontally disposed on the top of the support arm 61, and both ends of the rotating shaft 62 are mounted via bearings with mounting seats. The rotating seat 63 is fitted onto the rotating shaft 62 with an interference fit.

[0030] In one specific example, the rotating base 63 has two opposing locking screw holes, each fitted with a wing screw, for locking the rotation angle. The camera 5 is fixed to the rotating base 63 by screws, and the shooting direction of the camera 5 is perpendicular to the rotation direction of the rotating base 63. The rotation angle range of the rotating base 63 is ±45° to accommodate the shooting needs of water pipes at different installation heights.

[0031] The device also includes a lighting system, which is a ring-shaped LED light source 7, mounted on the rotating base 63 and arranged around the camera 5.

[0032] In one specific example, the LED light source is powered by 24V, and its brightness can be adjusted within the range of 0% to 100%. The LED beads are evenly distributed on a ring-shaped PCB board, with 6 beads in each group and controlled in 4 groups, allowing for adjustment of the lighting intensity in different areas as needed.

[0033] Furthermore, the guide rail 1 is provided with limiting blocks 2 at both ends. The limiting blocks 2 are L-shaped aluminum blocks and are fixed to the ends of the guide rail 1 by bolts. The limiting blocks 2 protrude from the upper surface of the guide rail 1 and form a mechanical block with the base 3 of the sliding component to prevent the sliding component from detaching from the guide rail 1.

[0034] Furthermore, the drive mechanism includes a stepper motor, a reducer, and a drive shaft. The drive shaft is made of stainless steel, with one end connected to the output shaft of the reducer via a coupling, and the other end connected to the drive roller 4 of the sliding assembly via a synchronous pulley.

[0035] The working process of the device provided by this utility model is as follows:

[0036] 1. Installation and debugging:

[0037] Fix guide rail 1 on the ultrafiltration membrane holder, ensuring it is level;

[0038] Adjust the shooting angle of camera 5 and fix it with the locking screw;

[0039] Adjust the brightness of the LED light source to ensure uniform image illumination;

[0040] Debug the drive system and set the running speed and acceleration / deceleration parameters.

[0041] 2. Start running:

[0042] The stepper motor operates at a set speed;

[0043] The sliding assembly is moved by a reducer and a drive shaft;

[0044] Camera 5 continuously captures images of the water production pipe and saves the images;

[0045] The sliding component automatically stops or returns after reaching the limit block 2.

[0046] The beneficial effects of this utility model are as follows: through the precise cooperation of the guide rail and sliding components, the camera can move automatically and stably with adjustable speed and high positioning accuracy; the adjustment mechanism adopts a bearing-supported and butterfly screw-locked structure, which is convenient to adjust and reliable to lock; the 90-degree cooperation structure between the V-shaped roller and the V-groove ensures stability during movement and minimizes axial movement; the ring LED light source provides stable illumination, ensuring image clarity and contrast.

[0047] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An ultrafiltration membrane integrity image acquisition device, characterized in that: include: A guide rail is installed on one side of the permeate pipe of the ultrafiltration membrane holder; A sliding component, which slides in conjunction with the guide rail; A camera, which is mounted on the sliding assembly, is used to photograph the ultrafiltration membrane permeate pipe; A driving mechanism is connected to the sliding component and is used to drive the sliding component to move along the guide rail.

2. The ultrafiltration membrane integrity image acquisition device according to claim 1, characterized in that: The sliding component includes: Base; Multiple rollers are mounted on the base and roll in cooperation with the guide rail.

3. The ultrafiltration membrane integrity image acquisition device according to claim 2, characterized in that: The roller is a V-shaped roller, and the guide rail is provided with a V-shaped groove that mates with the V-shaped roller.

4. The ultrafiltration membrane integrity image acquisition device according to claim 2, characterized in that: The base is equipped with an adjustment mechanism, and the camera is mounted on the base through the adjustment mechanism.

5. The ultrafiltration membrane integrity image acquisition device according to claim 4, characterized in that: The adjustment mechanism includes: A support arm, which is fixed to the base; A rotating shaft, which is horizontally mounted on the support arm; A rotating base, wherein the rotating base is rotatably connected to the support arm via the rotating shaft; The camera is fixed on the rotating base, and the shooting direction of the camera is perpendicular to the rotation direction of the rotating base.

6. The ultrafiltration membrane integrity image acquisition device according to claim 1, characterized in that: It also includes a lighting system that is positioned around the camera.

7. The ultrafiltration membrane integrity image acquisition device according to claim 6, characterized in that: The lighting system is a ring-shaped LED light source.

8. The ultrafiltration membrane integrity image acquisition device according to claim 1, characterized in that: The guide rail is equipped with limit blocks at both ends.

9. The ultrafiltration membrane integrity image acquisition device according to claim 1, characterized in that: The drive mechanism includes: Stepper motor; A speed reducer, the input end of which is connected to the output shaft of the stepper motor; A drive shaft, one end of which is connected to the output end of the reducer.

10. The ultrafiltration membrane integrity image acquisition device according to claim 9, characterized in that: The drive shaft is connected to the sliding component in a driving connection.

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