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                                                               In response to the user of a letter

 

Mr. Zhang, Huang, Chen Gong:
You are good! You for your mail and questions we have seen, after I plant engineer research and technology on accounting, now you put forward 8 issues briefly returned to our reply, if not satisfied with, please communicate timely.
1, we hit the sand machine sand play area is about 160 square meters; manual sand play area is about 100 square meters, according to your plan supporting the two fan motor power respectively for 22KW and 30KW. This auxiliary fan is too big? In exchange for some small? 10KW-12KW motor power of the fan can not meet our plant scale need?
Answer: according to your drawings and site conditions, we carefully calculated and long-term practice and experience, we think to use a 22KW and a 30KW fan is able to meet your company collector demand, because your company plant joint conformation is more complex, the main pipeline and the side tube has a certain the length of the elbow, and more, and the amount of dust is relatively large, there is a very important characteristic is your company's sand dust compared to other dust is relatively heavy, these factors which cause energy loss is relatively large. If the blower power change is small, it is difficult to achieve the desired effect.
Question 2, US 4 hit the sand machine is based on the need of independent or simultaneous operation, you dust collection scheme for sanding machine part whether satisfy each hit the sand machine individually operated design?
Answer: we designed a 22KW collector and by supporting the pipeline system, which can satisfy 4 hit the sand machine and work demand, can satisfy 1 hit the sand machine work demand, this is completely not worry.
Question 3, playing sand machine interior dust? Whether you need to configure the vacuum cleaner?
Answer: hit the sand machine room in 2 cases, 1 for the machine to play, 1 people play.
The machine played sand play room, due to hit the sand machine in a closed state, but also with rock dust collection systems, thus playing sand machine interior dust less. For manual sanding room, playing sand process is conducted under the condition of sand, indoor space and ground has a relatively large dust, for your company's site, the proposed allocation of 1 or 2 small vacuum cleaner.
Question 4, using this equipment, the original sand machine within the original dust collector is removed?
Answer: Yes, the original dust collector has been used for a long time, relatively backward, loss of function, can not continue to use, please your company shall handle.
I plant can be evaluated to buy your company the original 4 sets of small dust collector.
Question 5, dust collector for dust collecting mode?
Answer: this involves a principle problem, is also a collector of use principle. Simply put, we support your company 's 2 sets of dust collecting system is made up of 1 stage cyclone dust collector and the 1 filtering type dust collector which are connected in series. Cyclone dust collector dust collecting method is the use of dust particles in the rotation due to the effect of centrifugal force, so that the dust particles, especially the dust particles with larger mass, with the cyclone dust collector in the inner wall of the collision, the sand carried by the energy quickly disappeared, and fall into the dust collector beneath, and thus to the collection.
For filter type dust collector, in the dust collector is arranged inside the 36 filters, the filter can be characterized under the action of wind, the sand at the outside of the filter, exhaust is clean air, so that the grains of sand can be recovered. While in the dust collector is arranged in the interior of a set of automatic pulse dust system, so that the surface of the filter can be cleaned up and shake off the dust in the dust collector to collect beneath.
Question 6, collected in the process of how the coarse sand and fine sand classification?
Answer: design by the cyclone dust collector and filter type dust collector series, is to make the coarse sand and fine sand can be classified collection. According to our experience, the cyclone dust collector inside the dust collection, which accounted for a total of more than 60% coarse dust, and may reach above 90%. Relatively speaking, filter type dust collector is collected about 40% of the dust, and the fine sand ( fine sand ) may account for around 90% of.
Question 7, anechoic chamber can achieve what effect and correlated noise decibel parameters?
Answer: parameter from speaking, coupled with our experience, if not anechoic chamber, wind machine in nearby, due to the fan running noise of over 95 decibels, it is our human body could bear. While the addition of the anechoic chamber, can make noise is reduced to below 85 decibels, the body is able to bear.
8, whether the pipeline design changes ( increased three and gate ) so that each collector can be machine and hand in common use, crashes and hand work more hours, but share a dust collection machines, to avoid unnecessary waste?
Answer: our proposal is not to do it.
Because it can make the initial investment costs increase, but also increase the pipeline and three or valves and supporting other devices will make the system energy is consumed, thereby increasing operating costs, even not only saves, but increased operating costs, resulting in more waste.
By briefly about the blower motor operation principle, may explain this problem. We usually refers to the motor power is generally refers to the motor rated power, rather than the actual motor power consumption.
The actual motor power consumption = voltage x current
For a set of dust collection system, nozzle increases the current increase, decrease current reduced suction mouth. In normal circumstances the voltage will not change.
There is no need to invest through increasing cost, to reduce the operation cost, and the dust collection system used by the motor performance, can automatically makes the energy consumption can be improved.

 

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