Antiplugging controllable displacement sheave dispensing valve

Abstract

The present invention relates to an anti-blocking controllable positive-displacement grooved wheel distributing valve. It can be extensively used in the fields of chemical industry, pharmaceutical industry and grain processing industry, etc. for conveying two kinds or more than two kinds of granules materials or power materials according to a certain mixing ratio. It includes the following several portions: two material tanks, two grooved wheels, end covers, material outlet, observation window and scraper, etc. Said invention also provides the connection mode of all the above-mentioned portions, and also provides the working principle of said anti-blocking controllable positive-displacement grooved wheel distributing valve and its concrete operation method.

Description

technical field [0001] The invention relates to an anti-clogging controllable volumetric groove wheel batching valve, which is used in industries such as metallurgy, chemical building materials, medicine and grain processing to simultaneously transport two or more mineral powders, medicinal materials, various Dry granular or powdery materials such as chemical raw materials and grains. Background technique [0002] The impeller feeding valve is one of the commonly used equipment in industries such as metallurgy, mining, cement, chemical building materials, medicine, environmental protection and grain processing. This kind of valve is widely used in the above-mentioned industries to transport dry granular or powdery materials such as mineral powder, cement, fly ash, dust, medicinal materials, chemical raw materials, grains, etc. Because of its function, it is also often called a "wind shelter". In addition, a controllable volumetric impeller feed valve known as a volumetric ...

AI Technical Summary

Problems solved by technology

Before 2002, the main parts of this kind of valve were all rough and heavy cast iron parts. The manufacturing precision of the parts was low and the quality was large (the weight of the whole machine was generally about 300 kg). Therefore, not only the installation and maintenance were inconvenient, but also the quantitative accuracy of the conveyed materials was not high. and high energy consumption

However, because the natural law of the stacking flow of all granular materials is that the lighter material particles must flow to both ends, so the actual quality of the materials in the two smallest gear slots of 2% and 4% at both ends of the sheave must be lower than the theoretical value. , and the smaller the volume of the tank, the greater the proportion of light particles in the material entering the tank, and the greater the error

This phenomenon occurs when the material contains a large proportion of light particles, which often leads to the two minimum gears of 2% and 4% basically losing the adjustment function.

[0006] 4. The gap between the end faces of the two ends of the sheave and the inner end faces of the two ends of the existing similar equipment is small, and the gap is airtight, and the gap between the outer circle of the rotating sheave and the inner hole of the fixed casing is small. The dust in the gap between the end surface of the impeller and the inner end surface of the end cover cannot be discharged, and the impeller is often blocked after accumulation and compaction, resulting in shutdown accidents; if it is not discovered in time, the motor may be burned

[0007] 5. The observation window of the existing similar equipment for observing the operation status of the equipment and frequently opening and cleaning the impurities sandwiched between the scraper and the casing is a plexiglass plate fixed on the casing with more than a dozen screws, and it takes time to open and close It is laborious, and the screws are easy to lose. If the screws fall into the equipment or are mixed into the material, it may cause major accidents that damage other equipment.

[0008] 6. In the existing similar equipment, in order to ensure the accuracy of the amount of material conveyed by the equipment and avoid the sheave from being stuck, a scraper made of hard rubber is installed between the sheave and the casing. Due to the hardness of the scraper made of rubber and the The rigidity is insufficient and the wear resistance is poor, so not only the accuracy of the equipment conveying the amount of material is significantly reduced, but also the service life of the rubber scraper is short, and the worn-off rubber powder will also pollute the material

[0009] Although the product name of the prior art closest to the present invention is a microphone mixer, from the analysis of the equipment structure and working principle, this kind of valve can only be controlled by controlling the volume of the slot on the sheave and opening the part of the control plate to control the delivery of the equipment. For the purpose of material quality, a single piece of equipment does not have the function of "wheat blending" at all, and this type of equipment can not be limited to conveying wheat. Blockage controllable volume sheave batching valve

Images