Seven method Raymond mill noise control

With the vigorous development of milling industry, people milling equipment to increase demand, Raymond mill in the market share of an increasing proportion of weight. (Raymond mill) mill production line as the most important equipment during the operation of the mill, often inevitable emergence of machine noise problem, then, how to effectively control noise Gives the operator and nearby residents harm? Now after a small series of summary data, noise control method will now be summarized as follows:
1, reducing bearing noise
(1) controlling the shape and position tolerances journal roller bearing housing bore.
(2) Install an elastic damping bushings, to reduce noise it has a more significant effect.
(3) reinforcement of the housing bore at the seat wall, bearing wall near the base should be thickened or stiffened to reduce vibration thin wall.
(4) to ensure good lubrication, reduce noise.
2, improved feeding mechanism
(A) feeding to automatically adjust the size of the door opening, to maintain uniform feeding, thereby reducing noise.
(2) After processing speed roller pulley subject to balancing test, balancing error is smaller, less vibration.
3, to reduce the noise of the body
(1) the upper part of the body using welded steel cast iron lower part of the bracket structure, and is conducive to maintaining and rolled away from the constant noise reduction.
(2) Mill fiberglass cover, add some sound-absorbing material within the housing, thus reducing noise.
(3) the speed of the roller drive gear should be used with a wedge, with low noise.
4, to improve the structural design of the grinding brush
From the next state, automatically leave the grinding brush roll body, reducing the friction between the roller and reduce noise grinding brush.
5, the control from the transmission
(1) plus provided a barrier to prevent the spread of noise, or the use of natural form, such as hills, slopes, trees, bushes or afraid of loud tall buildings or additions or structures.
(2) the use of directional characteristics of the sound source to control noise; to reduce the impact on the environment.
6, the contact person for protection
(1) personal protection, such as wearing earplugs, earmuffs anti-noise helmets and other supplies.

(2) to take workers rotation operations, reduce time-to high-noise environments working time; take silencer, sound absorption, sound insulation and other measures.
7, workers regularly exposed to noise and hearing general health check
(1) found a high frequency hearing persistent decline and more than the normal fluctuation range, should be removed as soon as possible noise operation positions.
(2) when a new pre-employment medical examination of workers, where the sense of hearing loss and significant cardiovascular, nervous system organic diseases, should not engage in a noisy room to rest;
(3) in high-noise environments minimize working time;
(4) regular workshop noise monitoring, noise and serious harm of factories, workshops carry out health surveillance, and promote its active measures to reduce noise, noise to comply with hygiene standards.
Research shows that when noise is 90 decibels, people retina rod cells distinguish brightness sensitivity began to decline, to identify low-light reaction time; when you reach 95 decibels, the pupil will expand; at 115 decibels, the brightness of the eyes to light adaptability will reduce 207. In addition, long-term noise exposure, the most prone to eye fatigue, eye pain, blurred vision and tearing and other phenomena.
Therefore, in their daily work must be appropriate control of noise, so your body produces its unnecessary harm!
The provisions on shanghai Joyal production of mineral processing equipment are in line with China's "Industrial Enterprise Noise health standards", stable and reliable product quality, at home and abroad with the industry in the forefront of the comprehensive economic indicators, if you need to purchase , please contact us!

Ten of the performance advantages of VSI new Sand

Due to a serious lack of raw materials, artificial sand, more and more crusher manufacturers conform to the needs of market development, a great commitment to research and innovation among the Sand, Sand species after another. Among the Sand, VSI new Sand emerge and become the most popular and most widely used one of the new types of Sand! VSI new Sand application so wide, it is different from its own special advantage of ordinary sand making machine, and now its  performance characteristics are summarized as follows:
1, large capacity, high yield -50-500t / h, compared with the traditional equipment under the same power output increased by 30% and stable.
2, low consumption of wearing parts - the best material impact angle of the crushing chamber design, less friction and wear parts, 30% lower operating costs than traditional equipment, directly reducing the cost of the device.
3, excellent product shape - a cube products, grain shape, gradation and fineness modulus is adjustable; particularly suitable for artificial sand and stone shaping, proven equipment than other traditional sand, shaping effect increased by 30%.
4, hydraulic device, easy to maintain - hydraulic openings device so crushing cavity member Removable convenient maintenance, downtime, saving time and effort.
5, automatic detection, safe and reliable - to set the display and vibration alarm device, if the device adverse operation may issue a warning, so that the device stops working, to protect the machine's purpose.
6, oil lubrication, maintenance-free - the original German oil lubrication station, double pump complementary to ensure oil supply, oil flow, automatically shut down when there is no oil pressure. Oil cooling and heating unit ensures bearing lubrication is always in the best condition, so as to solve the heat problem bearings, spindle bearings to maintain constant temperature, extended maintenance intervals and service life.
7, easy to install, easy to operate - light weight equipment, installation and diverse, mobile installation; installation, repair and maintenance is simple and easy to operate. Once a clear and specific purpose, VSI crusher simply fine-tune, they can maximize their superior performance.
8, a multi-purpose, flexible application - unique feed crushing structure, with a variety of crushing chamber can easily achieve "stone at stone" and "stone blacksmith" conversion, thus solving a machine problem. If you want to change the application of VSI crusher, no big adjustment, can adapt to the needs of different users: artificial sand, gravel, plastic, abrasive materials and the like.
9, the international quality assurance - the latest German technology technology, advanced technology and automotive technology riveting appearance of sand-blasting and painting process applications, greatly improving the intrinsic quality of the equipment and appearance quality. Core components are selected well-known international brands (bearing TIMKEN bearing precision grade), ensure a low failure rate.
10, pay attention to environmental protection - sand equipment work noise, no pollution. Unique air circulatory system can greatly reduce the amount of outside ventilation to reduce dust, environmentally friendly. In addition VSI Sand reserve and a variety of specifications for the installation of dust removal equipment.
The majority of users in the process of buying Sand Sand, in addition to considering the performance characteristics of Sand, the need to combine factory scale, and trust service and other factors, the actual inspection if necessary, to the plant, the selection of the most appropriate Sand and suppliers!

Raymond mill elaborate procedures and daily maintenance of common sense

Raymond Mill in the use of the process, there will inevitably be a lot of failures. In these failure problems, some are unavoidable, some of it is caused by human factors. The reason why the human factor will lead to machine failure, mainly because of improper staff to operate, or routine maintenance work not done in place. To solve this problem, we specifically for today summed up the formal procedure Raymond mill and routine maintenance of common sense. Now its summarized as follows:
Raymond mill formal steps:
(A) preparation before starting: 1. Check whether all the access door closed tight; jaw gap 2, check whether the crusher feed grain size; 3, adjust the analytical engine speed should reach approximate finished size requirements.
(B) The boot sequence: 1, starting bucket elevator; 2, starting jaw crusher; 3, there are materials to be silos after, start analysis machines; 4, start the blower (air load start running until after the load); 5 start Raymond hosts, start host instant starts electromagnetic vibrating feeder immediately. At this point the work of Raymond mill is the beginning.
Simple sequence of operations is as follows: Start: elevator crusher → → → analysis machine fan → host → feeder.
(C) Stop order: 1, first turn off the feeder to stop feeding; 2, the host stops after about a minute; 3, blowing the net residual powder will stop the blower; 4, the final closure analyzer.
Simple sequence of operations is as follows: the host feeder → → → Blower analysis machine.
Raymond mill routine maintenance of common sense:
1, Raymond Mill in the use of the process, there should be a fixed charge of personnel, the operator must have a certain level of technology. Before installation of the mill operator must carry out the necessary technical training to enable them to know the principles of mill performance, familiar with the procedures.
2, for the Raymond mill normal, should develop equipment "equipment maintenance safe operation of the system" can ensure the long-term safe operation of the mill, at the same time have the necessary repair tools and grease and the corresponding accessories.
3, Raymond Mill machine used for a period of time, maintenance should be carried, while roller grinding ring blade overhaul replacement of wearing parts such as processing, grinding roller device before and after use of the connecting bolt nut should be carefully examined to see whether there is loosening, whether to add a little grease.
4, roller device use time more than 500 hours or so to replace the roller, the roller of each rolling bearing kit must be cleaned, damaged parts should be replaced, fuel pumps and hand tools available grease gun.
5, the bearings are using a No. 1 MOS2 grease or ZN-2 sodium bitter grease.
6. The roller bearing grease once every shift, every host center bearing 4 classes plus one, plus one for each month the blower bearings. Bearing temperature rise may not exceed 70 ℃, it found bearing from overheating, breaking cleaning bearings and bearing accessories such as room cleaning.
Raymond mill only to ensure regular operation, maintenance properly, in order to ensure the normal operation of the machine, making the mill life and work efficiency can be improved!

Limestone crushing production line brief

image of limesone

As a common ore material, limestone use is very extensive. While the limestone processing applications, crushing production line is of course indispensable, limestone crushing production line is designed with several factors, such as being pulverized material hardness, silicon percentages, raw material moisture content, recyclable size, desired product size, the size of the number, and hours of capacity and other uses. Today, I will introduce a highly efficient combination of limestone crushing: primary jaw crusher + fine jaw crusher / compound cone crusher as primary and secondary crusher equipment, take impact crusher, crusher equipment as three It was shaped. This proposal has been adopted by many users and become a viable option.
The combination of advantages:
1, the high quality of the finished product. After the needle plate is not more than 5%, once by a jaw crusher and impact crusher, but the needle plate type of content is more than 10%, the use of VSI series vertical shaft impact crusher, needle plate type products content reduced to 4.7%.
2, high yield. Utilizing impact crusher as crushing processing, production increased by 50%.
3, to reduce costs. Due to the use of impact crusher as tertiary crushing, and less consumption of vertical shaft impact crusher wear parts in the whole production process, greatly reducing downtime and repair time.