The bottle washing machine has a low net bottle rate, which is a difficult problem in the beer packaging production line. It often brings great difficulties to the air inspection and finished product inspection of the production line, which not only affects the production efficiency, but also causes energy waste, and seriously affects the quality of the product.
In 1997, our company purchased a XP30-400 bottle washer produced by Guangguang No.2 Factory. The machine was equipped with three soaking boxes (pre-soaking, soaking I-box soaking II box), one de-spraying spray and 12 sets. Spraying in the bottle (washing liquid I four groups, hot water three groups, warm water three groups, clear water two groups), five groups of bottles outside spray (washing liquid I group, hot water two groups, warm water group, clear water group) ). This article mainly talks about the phenomenon that XP30-400 bottle washing machine often appears in the process of production and use, such as incomplete labeling, plaque washing, and paper fiber hanging on the bottle wall. Let's talk about our analysis and solutions.
First, the cause analysis:
The bottle to be washed first enters the prepreg box (the temperature inside the box is 35 ° C ~ 45 ° C), the bottle is pre-soaked, reducing the dirt and dust entering the I box, so that the bottle can be preheated into the soaking I box (soaking I) The temperature of the box is 75 ° C ~ 85 ° C) The bottle is soaked in the I box for not less than 3.3 minutes (related to the washing speed). With the operation of the bottle box, the bottle leaves the I box, and after the label is sprayed, the label paper and dirt on the outside of the bottle are washed away. After the standard removal device I is removed from the machine in time, the imported pump Castel wine is turned over and accepted. The spray device sprays on the bottom of the bottle and the inside of the bottle; enters the immersion II box (soaking the temperature of the box at 65 ° C ~ 70 ° C) where the bottle is immersed for not less than 3.5 minutes, making the bottle difficult to wash off the boot and The high-standard paper is finally detached, and the removal device is excluded from the machine. After the bottle comes out of the immersion II, it is sprayed through the inside and outside of the hot water, sprayed inside and outside the warm water, and sprayed inside and outside the water to enter the next production stage. According to the above immersion spray work, the main reasons for the above problems are as follows:
1. The temperature and concentration of the lye are unsuitable.
The temperature and concentration of the alkali tank lye are the main reasons affecting the quality of the washing bottle. If the temperature and concentration of the lye are too low, the bottle will not be washed, and the bottle will be marked and the plaque will remain attached to the inner wall. When the concentration and temperature of the lye are too high, there will be a case where the paper fiber is hung on the wall of the bottle. This requires us to carefully analyze the cause, combined with the quality of the water, the quality of the label paper, the dissolution of the label paper in the lye, etc. Bottle washing agent,
2. The soaking time is short.
For bottles with a long turnover cycle, the soaking time should be increased appropriately, which can effectively solve the problem of plaque washing, and increasing the soaking time can greatly increase the bottle washing rate.
3, insufficient pressure on the jet
Soaking I box has an alkali pump, the pump outlet is divided into two ways, one way to remove the standard spray, the other way is heated by the heater, and then the inner bottom bottle sprays and the I alkali tank liquid circulation, because I base large spray liquid The flow rate is large and is transported at a relatively close distance, resulting in insufficient pressure in the I base.
4, the spray is not good.
Sometimes the nozzle is blocked by the label paper or the spray rack and the bottle box are misaligned to the wrong bottle mouth, which also affects the bottle washing effect.
Second, solutions and measures.
1. Try to control the concentration of alkali and the concentration of bottle washer. Under normal circumstances, the concentration of alkali solution in I base tank of our company is controlled at 0.8-1.0% temperature 75-85 °C, and the spray pressure of each section is 0.1-0.2. Mpa. The alkalinity of the turnover bottle and the I alkali tank which are generally short in recovery time can be controlled at 0.6% to 0.8%, and the amount of the detergent added is 10% of the amount of alkali added. For the turnover bottle of the recycled bottle for more than 2 to 3 months, the concentration of the alkali is controlled at 1.2% to 1.6%, and the amount of the bottle-washing agent is 10% of the amount of the alkali added. The concentration and temperature of II alkali tank alkali are slightly lower than those of I box.
2. Increasing the soaking time, our company has modified the bottle washing machine with the successful experience of other beer manufacturers, and added a section (III alkali tank) between the II alkali tank and the hot water tank, so that the bottle is in the I alkali tank. The soaking time in the middle is increased by 2.5 minutes, and the bottle in the III alkali tank is more fully soaked. It has been proved that this modification method is very effective, and the net bottle rate can be increased, and the concentration of the alkali solution can be appropriately reduced to reduce the cost of washing the bottle. .
3. In order to solve the problem of jetting pressure, our company added a pump in the I-alkali tank, which is specially used for the injection and the blasting of the bottle and the bottom of the bottle. The original pump is used as the I-alkali spray and the lye heating cycle.
4. Clean the nozzle and filter cartridge every shift, and check the position of the spray booth and the bottle box frequently. The person in charge is responsible for inspecting the working condition of the nozzle to ensure the best working condition.
Through the above measures taken on the bottle washing machine, after application, the effect is good. Not only reduces the amount of alkali and detergent, reduces the cost of use, reduces labor intensity, and significantly increases the net bottle rate. It also greatly improved the quality of the product.