How should a mixer be selected?

When mixing powder/powder or granular materials, choose a horizontal mixer. This equipment has high mixing efficiency, good mixing quality, short discharge time, and minimal residue. However, when selecting and using a horizontal mixer, the following points should be noted:

1. Select the horizontal mixer based on the daily production volume. Due to the mixing machine’s processing time of about 10 minutes for each batch of materials, plus the time for discharging and feeding, the processing time for each batch of materials can be calculated as 15 minutes, which allows for continuous processing of 4 batches of materials in 1 hour. If a mixer with a processing capacity of 100 kilograms per batch is selected, it can process 400 kilograms per hour. Users can choose a horizontal mixer according to their own needs.

2.According to the working principle of a horizontal spiral belt mixer, the ability of the double spiral belt used for mixing to push materials in the opposite direction should be basically consistent. Due to the fact that the pitch of the inner spiral belt should be smaller than that of the outer spiral belt, in order to achieve consistent material pushing ability, the pitch of the inner spiral belt should be smaller than that of the outer spiral belt, and the width should be larger than that of the outer spiral belt, otherwise it will cause the material to concentrate in one direction. Therefore, it is important to pay attention to this when selecting a horizontal mixer.

3.According to the design principle, the gap between the spiral belt and the shell in the spiral belt mixer can be between 4mm and 10mm, and the materials can be driven by friction to participate in the mixing process. However, due to differences in particle size and friction coefficient of materials, the mixing time of various components of materials may vary, resulting in non-uniformity of the product. At present, some manufacturers have realized this and made improvements to their products. One is to pay attention to machining accuracy, reducing the bottom clearance to about 3mm; Another method is to make the position between the main shaft and the housing adjustable, and adjust the gap between the spiral belt and the housing frequently according to the wear amount. When choosing a mixer, these two forms of product should be the best choice.

4. When selecting a horizontal spiral belt mixer, pay attention to the discharge method. Timely communication should be made with suppliers to choose the valve form that is suitable for their own process, and do not choose the side outlet discharge form. The reason is that when the mixer completes the mixing process within the specified time, it can ensure the uniformity of the material by releasing it in one go as soon as possible; If the side spiral belt is used to gradually discharge the material, it will delay the time and fail to achieve the expected production rate. Secondly, if the material has already reached the optimal uniformity, excessive mixing will actually cause the material to separate and damage the uniformity, thus losing the significance of using a horizontal mixer.

5. When using a horizontal mixer, pay attention to the order of feeding. Generally, large materials, such as corn meal, soybean meal, etc., are put in first, and then group materials, such as premix, are put in. Note that the pre mixed material must not be fed by a spiral elevator, but should be fed by a one-time tilting bucket or manually to avoid the segregation and loss of effective ingredients in the pre mixed material.

6. When using a horizontal mixer, batch feeding should be carried out after the mixer is started. Do not stop the machine at the end of mixing and discharge, and mix another batch after the material is discharged. If restarted after full load, it will cause the power distance to be too large and burn out the motor.