Equipment cleaning is a headache for feed mills, especially for plants with busy production tasks. But if you ignore this problem, feed products will not guarantee long-term quality stability. For Dabei Nong, many products are high in oil content, and the consequences are more serious once the problem occurs.
In fact, almost all equipment needs to be cleaned after a period of use, some need to be cleaned outside, and some need to be cleaned inside and outside. What we are talking about here is the part that can affect the quality of the product, mainly concentrated inside the equipment.
Because the inside of the equipment is invisible to people, it is not known what is inside, and it is often ignored. If the production management department does not have a practical clean-up plan and persistent supervision and execution, the equipment cleaning work will often come to an end. It is understood that some companies do not have professional management personnel, and even do not know how to clean up the equipment.
In this paper, according to the impact of equipment cleaning on product quality, the following equipment cleaning opinions are put forward, so as to create a relatively complete set of equipment cleaning equipment for feed enterprises.
1 machine cleaning
After a period of use, the inside of the mixer will be filled with a layer of material. If the oil content is high, a thick layer of material will accumulate in one shift. Some mixers have a liquid mold in addition to the fuel injection device. The agent nozzle, the liquid methionine nozzle, will accumulate on the inner wall of the mixer, beside the nozzle, on the shaft and the blade, and on the door of the switch. Therefore, the general feed mills are cleaned after the end of the shift. Before the cleaning, the power is turned off. The cleaners lock the knives themselves. The keys are placed in their pockets. The specially made tools will stick to the inner wall, the nozzles, and the oars. The layer on the leaf and the shaft is scraped off. After cleaning, open the mixer door and clean the door and seal. The materials cleaned up on the same day can be returned according to the quality control requirements. If the time is too long, the odor and mildew materials will not be returned to the machine for disposal. Some mixers are relatively large and require people to enter before they can be cleaned up. At this time, the safety work is particularly important. In addition to locking, there must be someone to look after the person. When the cleaning is completed, the person entering the mixer is responsible for opening the lock of the power box door.
Mixer cleaning frequency: 1~3d should be cleaned once.
2 granulation system cleaning
The granulation system consists of a granulator, a cooler, a crusher and a sieving screen, the most necessary of which is the modulator part of the granulator and the granulation chamber part. Because the steam enters the above part and the feed acts, it increases the moisture, heat and viscosity of the feed, and easily adheres to the inner wall, the shaft and the blade of the modulator. The structure of the granulation chamber is complicated, and there is accumulation of material everywhere, granulation. The machine modulator is more difficult to open, so the frequency of cleaning is generally not high. Some modulators such as feed mills are broken and cleaned up once. In order to ensure product quality, the author believes that it is more appropriate to clean up once a week to half a month. If it is stopped for a long time, it should be cleaned up to prevent the mold from becoming sticky. The granulating chamber should be thoroughly cleaned after the end of each shift. If the two varieties are cross-contaminated, they must be cleaned up. After the next variety. After the granulation is finished, wait for the cooler to be emptied, enter one person from the entrance hole, clean the four corners and the residue on the sieve plate with a wooden stick and other tools, wipe off the four walls; dust and product on the leveler and glass The material is completely removed. The crusher is easy to accumulate at both ends.
3 cleaning of the permanent magnet cartridge
The permanent magnet cartridge is made of a magnetic substance such as iron. Iron filings have an impact on feed varieties and are hazardous to equipment. Failure to clean in time may result in equipment damage and may also affect the passability of the feed and cause blockages. It is recommended to clean up once after each shift. The impurity portion cleaned by the permanent magnet cylinder is treated as waste.
4 Cleaning of screening, finished inspection sieve, and grading sieve
The primary screening, the finished inspection sieve, and the grading sieve are all cleaned, de-mixed, and graded, and are easily blocked. Especially for the primary screening, when the quality of the impurities is large, it is easier to block and needs to be cleaned up in time. Generally, after the end of each shift, the above sieve is opened, and the inside of the rope, impurities, hard blocks, etc. are cleaned, and the interior of the sieve is kept clean, and the mesh is not blocked. The cleaned materials are processed according to the actual situation, and some of them can be used.
5 pulse bag filter, cyclone dust cleaner to clean up
The pulse bag filter and the cyclone dust collector are devices for collecting dust. The dust is adsorbed on the surface of the bag or transported to the silo or bag with the airlock. After a long time of operation, a thick layer of dust will accumulate on the inner or outer wall of the bag. (If the pulse is not enough or it is more serious when it fails, it is recommended to open the door after each shift and clean it with wooden sticks and compressed air. The cyclone dust collector is not easy to open. Observe the glass observation hole every day, whether it is blocked or not. If the above problem occurs, it needs to be dealt with in time. After the material is cleaned up, use the rubber hammer to tap the brake cylinder. Body, shock the material inside the back of the cylinder.
Under normal circumstances, the dust part of the brake can be used, and the moldy deterioration must be disposed of.
6 silo processing
The silo, including the cylinder steel silo, the chamber bulk silo, the crushing bin, the batching bin, the grain bin to be granulated, the finished product bin, the buffer bin, etc., are storage devices for storing a certain amount of raw materials, and all the silos mentioned above need to be cleaned. However, depending on the materials and frequency of use, the requirements for cleaning are also different.
Cylinder steel silos, room silos, bulk silos, generally store granular raw materials such as corn, wheat, soybean meal, etc. Before the new silo is used, it is necessary to enter the screw in the silo where the steel plate and the cement foundation are connected or left on the ground. Mix the strips, cement blocks, etc., clean the garbage and other debris between the discharge port and the scraper, and then wash them with rice bran and corn until they are clean and free of debris before they can be stored. During the use process, the warehouse is temporarily empty, and it is checked into the warehouse to check whether the cylinder bin leaks rain, clean the dead corners, agglomerates, moldy materials, clean and then load new raw materials. It is advisable to clean up the frequency once every 1-2 months.
The granary to be smashed, the batching bin, the granary to be granulated, and the finished ware are generally in the workshop. Most of them are welded by steel plates, and the squares are mostly. So on the corners, the upper part of the cone, the upper side of the angle iron, the rivets will In the case of some materials, some silos have more dead ends. This part of the material does not flow for a long time and is attached to the wall of the warehouse. Some factories use high-moisture raw materials. After crushing, the hot gas gathers on the top of the silo, and the inside of the silo is adsorbed. Dust is often very thick and not easy to be found. After the mold changes, it will be noticed when it falls into the silo. The above silos should be inspected frequently. If necessary, the empty silos should be cleaned. After the empty silos, it is recommended to use a compressed air machine attached to the spliced ​​bamboo poles or other poles to blow off the residual materials with compressed air, and then open the scraper or The auger cleans the residual material and then washes the warehouse with fresh raw materials. The cleaned materials and washing materials can be used according to the quality control opinions.
7 hoist conveying equipment cleaning
There will be some accumulation of material in the base of the hoisting machine. There will be a lot of material accumulation from the base of the hoisting hoist. The square base has more material, so it should be cleaned once every other time. It is recommended that the corn and wheat raw grain hoist weekly. Once cleaned, the powdered raw materials are cleaned once a day, and the products that cannot be cross-contaminated are cleaned once every time.
There are scraping materials on the bottom and pipe wall of the horizontal and vertical conveying equipment, but the above-mentioned equipment used normally, the material is flowing inside, only the two ends will not flow, the cleaning time interval can be longer, and the cleaning time is once a month. . In normal refueling, it can be washed by washing method or in the form of head and tail. The accumulated material on the pipe wall can be knocked with a rubber hammer or blown down with compressed air.
8 Feeding port cleaning
At the end of the feeding, the raw materials should be cleaned, all of them go into the next process, and the materials stuck in the feeding fence, the pipe wall, and the inside of the bucket should be cleaned at intervals, and it is best to clean them once a day, at least 3 days.
9 Liquid Addition Equipment Cleaning
Oil tanks, molasses irrigation, liquid anti-mold agent irrigation and its associated spray pipes, pump filters, nozzles, etc. should be cleaned regularly. Oil, molasses, liquid methionine and other raw materials are more likely to deteriorate, so it should be cleaned once in a certain period of time. It is very important to formulate a complete clean-up plan based on the characteristics of these raw materials, weather, storage conditions and other factors. It is recommended that liquid addition irrigation, tanks, pipes, pumps, etc. be cleaned every three months in the first quarter and fourth quarter. Clean up every 1-2 months in the third quarter. It is relatively difficult to clean the oil tank. If necessary, it should be cleaned with hot water, detergent and caustic soda. Molasses, liquid methionine and liquid anti-mold agent can be washed. The cleaned equipment should be cleaned and dried before use.
10 Cleaning of other equipment sites in feed mills
The feed mill is full of dust, and each device may be stuck with dust, raw materials, dust, oil, water, etc. Therefore, the equipment not listed in this article is not cleaned, such as a crusher, which also needs to be cleaned regularly. In addition, the dust, powder on the floor, wall, and window of the feed mill affects the quality of the product. If it is accidentally taken to the feed mill, the cleaning of the site is also crucial.
Conclusion
From the above, the equipment in production basically needs to be cleaned up. The author lists most of the equipment here, highlighting the necessity of cleaning these equipment and the conventional cleaning methods. However, in actual work, many equipments were not cleaned up in time due to problems in the arrangement, resulting in unstable product quality and constant complaints. It is very difficult to find the cause. Therefore, enterprises must pay attention to this problem, require the production department to cooperate, formulate a practical equipment cleaning plan, track the cleaning process, do a good job of cleaning up records, implement the equipment cleaning work, and produce qualified products with stable quality.
(Article source: Feed wide angle from noodle)
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