| How to deal with the effect of dust on photoelectric counting machine |
|
| 2022-5-27 publish |
The counting machine is widely used in pharmaceutical and food industry and is one of the key equipment in pellet medicine canning production line. At present, there are mainly photoelectric particle counter in the domestic market, it is through vibration blanking operation, the use of photoelectric effect. Active counting packaging equipment. Although not bound by numbering templates, it can handle a variety of shapes and different standards. The user who has used photoelectric counting machine will be affected by dust and photoelectric counting machine speed. I should be well aware that the counting machine will have the problem of inaccurate counting when it counts dusty items such as pills and pills for a long time. Dargaard number sensing machine is the world's first to use the principle of high-speed imaging, stack counting, logical distribution, just to deal with the issue of appeal. It is characterized by high speed, accurate counting, simple structure and detection of broken film. Let's talk about why visual counting is better than photoelectric counting.
Visual counting machines break through traditional methods. Material flows from material pallets are piled up and transported in a flat single layer condition without any one-way street. As the pile falls, it is counted through the imaging area. Compensation method was used in the first generation visual particle counting method. After counting the whole heap, the compensation device controls the number of pieces to make up the difference to the guideline number. However, the difficulty lies in the need to control the initial heap number close to the policy number, and in the time of making up the difference, it also needs to control the non-items independently, which is actually an extension of the traditional multi-row. The -channel method also suffers from some original problems. Z New generation visual counting method, no need to make up the difference of counting items. The pile passes through a logical dispenser, and the computer monitors the distribution of the pile as it enters the dispenser, and allocates the guideline quantity through a logical calculation method. Visual skills Logical scatter counting skills have the following advantages:
Visual counting, remote imaging, not affected by dust
High resolution, accustomed to objects of different scales, no blind spot detection
Can distinguish fragments and broken particles, together can remove small pile material, avoid production capacity waste
There is no need to separate or separate the goods, single pallet feeding, channel integration, greatly improve the feeding density and production capacity
No need for high speed gate, avoid the risk of gate breakage, no requirement for the cleanliness of compressed air
The production capacity/floor area is better than Z, which is convenient for production line layout
Traditional electronic counting machines use multi-channel delivery, arranging items in each channel in a single row and triggering the corresponding photoelectric sensors to count when they fall. When the accumulated quantity of each channel reaches the guideline value, the independent gate below the sensor is closed successively, so that the cargo flow is divided into piles according to the guideline quantity. The problem with this counting method, however, is that
Photoelectric sensors need to work close to the material, and their sensitivity is simply affected by the dust generated by the material
A sensor array is required to cover the width of the channel. There is a certain distance between the sensors, small objects have a certain probability of detecting blind spots.
The array of sensors has limited resolution and cannot effectively identify debris and debris
The multistage vibration plate is used to disperse the material into many rows and occupy large plane space separately
Channel gate requires very high response speed, compressed air cleanliness is very high. A slight delay in gate response can damage objects or cause imprecise stacking
Only one item can pass through each channel of the puller. If the passage is too small, it is not suitable for larger items. If the channel is too large, the size of the device will increase proportionally, the opportunity to detect blind spots will increase, and the versatility of the device will be constrained. |
|
|
0938-2721678 
