Wedge Wire Screen or Johnson Screen or Wedge Wire Profile are intended for the construction of high-quality water wells, oil wells, gas wells and other filtration equipment.
The inspection machine is designed for control of one of the main parameters characterizing the quality of the screen, namely, the constancy of the interwire gap (slot opening) along screen length.
Wedge Wire Screen inspection machines
Wedge Wire Screen Inspection Machines. Specification
System
| Parameter | Value |
| Measurement object | Wire screens |
| Controlled screens length, up to, m | 12 (can be changed on request) |
| Screen diameter, mm | from 125 to 190 |
| Controlled gaps, mm | from 0.05 to 2.1 |
| Wire width, mm | from 1 to 5 |
| Gap measurement error, mm | ±0.015 |
| Scanning speed, up to, mm/s | 50 (programmable value) |
| Power supply |
AC network with a frequency of (50 ± 1) Hz, rated voltage of 220V ±10% |
| Power consumption, not more than, W | 400 |
| Operating conditions |
Workshop (temperature 10…30°С, relative humidity at Т=25°С no more than 80% |
| Readjustment for measuring another part |
Not required if the adjustment is not related to shifting the screen axis |
| Computer |
Industrial computer, 19” touch screen, keyboard, mouse |
| AWS dimensions, mm | 723х1550х573 |
Wedge Wire Screen Inspection Machines. Specification
Industrial camera
| Parameter | Value |
| Scan area size, pixels | 1264x256 |
| CE сompliance | RoHS, FCC Class B, CE, IP30, GenICam, UL, KC, EAC |
| Operating ambient temperature, °С | 0...+50 |
The linear motion system of the machine is installed along the screen. The industrial camera is positioned so that its field of view lies in the diametral section of the screen. Using the linear motion system, the camera moves along the screen, capturing images of its surface. The software analyzes the obtained images and calculates the gap dimensions. The process is repeated for different screen positions as it is gradually rotated around its axis.
Image data processing is performed on the AWS using the installed software. If the parameter values exceed the specified limits, a corresponding warning is displayed on the AWS.
Structural diagram
The machine includes a linear motion system installed along the screen (2). The belt drive of the linear motion system carries a carriage on which an industrial camera (1) with LED illumination is mounted. The camera is focused on the screen (2) using a vertical linear drive. At the beginning of the linear motion system, a calibration template (3) is installed on a special platform. Power supply and control of the machine are provided through an automated workstation (hereinafter referred to as the AWS) using specialized software.
Figure 1. Overall and mounting dimensions of the machine
Overall and mounting dimensions
The overall and mounting dimensions of the machine are shown in Figure 1.
The AWS dimensions are shown in Figure 2.
Figure 2. Overall and mounting dimensions of the AWS
Wedge Wire Screen Inspection Machines, demo-video.
