Since its founding in 1996, Muyang Steel Structure Co. Ltd has been committed to spearheading development of steel structure technology with consistent technical innovation and meticulous product management. Its scope of business covers design, structural steel fabrication and installation of civil steel structure buildings, tunnel and bridge steel structure for transportation facilities.

The company now employs over 100 technical staff and owns fixed assets of RMB 50000000 including over 200 units of world-advanced capital equipment. With long-term good business relations with many well-known companies including Hope Group(Sicuan), Tongwei Group(Sicuan), Yangzhou CIMC Tonghua Special Vehicles Co.,Ltd., Liuhe Group(Shandong), Suning Group, Jiangsu Sanxiao Group, CSC Group, Jiangsu Chengde Steel Pipe Co.Ltd, Anhui Jiatong Group, China Railway First Group Co. Ltd., China Railway Eighteenth Group Co.Ltd,. China Petroleum Pipeline and Equioment Corporation, Nanjing Dadi Construction Group, CJ Liaocheng Co., Yangzhou Yongfeng Paper Company and so on, Muyang Steel Structure Co. Ltd. has completed over 1000 steel structure buildings and projects in China and export to USA, Japan, Australia, Russia, Sadui Arabia, and many other countries.



In keeping with its corporate sprit featuring innovation, responsibility, cooperation and efficiency, Muyang Steel Structure Co. Ltd. will continue its perseverant efforts aimed at "laying a solid foundation for a century's glory by creating a world-class brand". Muyang steel structure engineering features:

1. Design and construction at the national first-level with qualification;
2. Involved with steel architecture designing, fabricating and installing;
3. Thousands of steel structure engineering and project contracting experience;
4. Global service network system.

The article is from : http://muyangmachineryshops.blogspot.com/2013/09/top-notch-steel-structure-engineering.html

The principal machine of extruder is the heaviest equipment in the whole system, and also considering the main motor, thus it is demanded highly to the bearing capacity of foundation. The extruder cannot be directly put onto foundation during installation, it is required to underlay a frame, which is made of channel steel according to the size of extruder base, at the bottom of equipment base, and use the expansion bolt to fix with foundation. Ensure the plainness of the whole frame when making the base frame, especially the principal machine base and the mo tor base must be at the same plane. This is especially important for the extruding machine with driving device of elastic coupling directly connected with reducing gear box.



Because the main motor and the reducing gear box are directly connected with a drum type coupling, it is necessary to ensure the coaxiality between the output shaft of main motor and the input shaft of the reducing gear box during installation. Comparatively, it is convenient to adjust the position of main motor for adjusting the coaxiality.

The coaxiality between the two shafts can be also ensured by lying channel steel under the extruder.

The article is from : http://muyangsales.edublogs.org/2013/09/17/installation-of-extruder/

"Chaoyue" Series Fine-grinding Hammer mills can be used for grinding various granular feedstuffs, such as corn, sorghum, wheat, crumbled oil meals and etc. They are applicable for grinding granular raw materials in various large- and medium-sized livestock feed mills, alcohol plants, citric acid plants, food factories and cooking oil mills.

With advanced design of water-drop shaped grinding chamber and structural configuration for regrinding, it is good for increasing the machine's capacity. Optimized array of hammers makes the capacity higher. The design for air supplementing in axial direction effectively destroys the circumfluent material layer, it is of the benefit of grinding and screening, and it also do good to bearing cooling. Various accurate detection instruments including dynamic balancing device with high precision ensure much smoother running, lower noise level and more perfect performance.



The rotor on the hammer mill which is capable of both coronation and reversion greatly increases the service life of wearing parts. With the movable full-size access door and interlock device ensure safety and operational convenience. The coupled screen holding-down mechanism makes the screen segments be replaced conveniently and reliably. Equipped with the feeder of either advanced converter impeller type or automatic type, the grinding machinery works more reliably. The gap between hammers and screen can be adjusted to suit the highly efficient grinding of different materials. In order to bring the performance of the hammer mill into a full play, it is recommended that the feeding inlet size shall not be over 8mm and material moisture content shall not be more than 16%.

The article is from : http://muyangsales.edublogs.org/2013/09/16/muyang-chaoyue-swfp-series-fine-grinding-hammer-mill/

SWFL B/C series vertical ultra-fine pulverizer is a new type of equipment for large-, medium- and small-sized feed mills to process various coarse ground materials after preliminary cleaning, magnetic separation and mixing, such as corn, sorghum, rice, wheat, soybean meal, fish and shrimp, so as to obtain the materials in superfine particle size as required. It is especially suitable for fine grinding or ultra-fine grinding of feeds for prawn, turtle, eel and young animals.

SWFL B/C series ultra-fine grinding machine mainly consists of a stander, a grinding system, a grading system, a feeding system, a hydraulic opening mechanism as well as a main motor driving part for grinding and a motor driving part for grading (see Fig.1). The grinding system is composed of a main shaft, a grinding disc, a toothed ring and a grinding chamber; the grading system is composed of a grading impeller shaft, a grading impeller, a convex cover and a discharge chamber. The main motor runs in vertical driving way; the frequency conversion motors with frequency converters are used for both grading and feeding, so as to realize steeples speed regulation and remote control.



Preparation and inspection prior to first test run

1. Open the grading system, and check for any metal or sundries in the grinding chamber;
2. Check for any metal or sundries in the feeding bin or feeding screw;
3. All fasteners must be carefully checked for any looseness;
4. Check whether the driving belts are properly tensioned and the guard hood is well mounted;
5. Check each driving part on the grinding machinery for collision, analyzes the reason if any, and then put it right as soon as possible;
6. Turn each driving part and see whether there is any abnormality, and then inch each driving part and check whether they rotate in a correct direction;
a. The rotating direction of the grinding disc: clockwise in an overhead view.
b. The feeding screw: rightward.
c. Rotating direction of the grading impeller, normally it is clockwise in an overhead view. It can also be changed into counterclockwise according to actual situation.
7. Keep idle run of the hammer mill for 20-30 min. and observe its current, temperature and vibration:
The temperature rise of the main shaft bearings should not exceed 35, and the maximum ℃temperature should not exceed 70 ℃(the ambient temperature should not exceed 40 ℃). The vibration amplitude of the machine should not be too large. And the machine cannot be loaded until it runs idly in a normal way.
8. During working, properly open the upper air gate of the gravity impurity removing chamber of the machine. And adjust the position of balance weight block on the gravity cover that is at the bottom of the machine so that it can open automatically when there are many impurities.

The article is from : http://muyangsales.edublogs.org/2013/09/13/muyang-chaole-series-swfl-110bc-ultra-fine-pulverizer/

Cutting device

As an important component, the cutting device has a great effect on the sustained and steady running of the extruder as well as the pellet form of expanding feed. The cutting device is mainly composed of a slide rail, housing, a screw moving device and a cutter driving unit, see Fig.3.7.



When working, slide the housing as well as the cutting driving device to the working place and fix. The cutter driving unit can be adjusted forward by turning the screw on the screw moving device when there is any wore on the cutter during working, which can ensure the clearance between the cutter blade and the die plate on the feed extruder keep appropriate. After working, the housing and cutter driving unit should be slide to the other side of the slide rail and then fixed.



Cutter driving unit

1. The driving component for cutting consists of cutting knives and a driving device with variable speed. A variable frequency speed control motor is applied for variable-speed driving; the cutting knife bar drives the cutting knives to rotate. The length of product to be cut is cont rolled by adjusting the rotating speed of the cutting knives.
2. There is a long hole in the knife support, through adjustment its position on the knife tray, the edge surface of knife can be in a surface.

Discharging device

In comparison with discharging device (I), a "8" shaped hole spacing plate is added in discharging device (II), and the others are the same except length of the screw.
The material extruded and ripened in extruder chamber must be formed through a discharging device and the discharging device is mainly used for limiting the flow of material to form the required pressure for expanded material at the end of expanding chamber. Structure of discharging device and selection of die can directly influence the quality of material.
The discharging assembly of this extruding machine mainly consists of "8" shaped bus bar and five die plates are available for this extruder.



Bypass

The bypass is located between outlet of different diameter cylinder conditioner and the inlet of extruding assembly. The flow direction of material from the conditioner can be selected through bypass: flow into inlet of extruding assembly for extrusion or flow out through chute of the bypass in convenience for checking conditioning efficiency of material.

The article is from : http://muyangmachineryshops.blogspot.com/2013/09/major-component-on-my562a-twin-screw.html

1 All the mechanical equipments produced by Jiangsu Muyang Group are equipped with safety devices, which are consistent with modern technical level and universally effective safety rules prior to exworks, so that the customers can use the machines in accordance with the regulations.
2 Enterprises are obligate to execute following regulations to guarantee operators' safety.
3 The coupling shield cap must be mounted and closed at any moment. It is very dangerous to personal safety, if they are open or disassembled. This point is also applicable for the preventive device of manipulator.
4 The safety limit switch should always be kept in good order. The safety limit switch may not be overlapped or discarded.
5 The grating cover plate, grid bar or guard grating on the mixing machines are usually installed and delivered together with the machine. They can only be disassembled with tools. And the machines with such kind of devices can be never put into work until the above-said devices have been properly installed.
6 The driving motor must be switched off completely when carrying out inspection, commissioning, repair and maintenance. This can be realized through a full-phase separating and lockable switch installed near the machine or on the operation desk and control panel on the site. It is not enough only to screw off the fuse wire!
7 If the machines need other energy like pneumatic, hydraulic, steam and hot water energy, it is necessary to cut off their energy supply or turn off the switch, and eliminate the pressure in the internal pipeline system of the machine.
8 As for handling heated or cooled parts and components of the pelleting machine, especial care should still be taken for the danger of burning possibility.
9 If you have pressed the emergency stop switch to stop the machine and you want to reset the switch, so it is not permissible to only re-press this button to restart the machine. And the machine can only be started by re-closing the main switch first.
10 If some machines are equipped with a local shutdown system, especial care should be taken. Read the instruction manuals attached with the machine carefully. In such machines with a local shutdown system, temperature will rise because of pressure or vacuum will occur after they have been used for a period.
11 If the operators employed cannot read or write, the owner has the duty to explain to them clearly where dangers exist and warn them that special attention should be paid.
12 The cleaning, lubricating and oiling of the grinding machine or its parts and components may be carried out only when the machine is stopped. If you must climb on or enter the machine to do such work, the mandatory provisions shall be made without exception: the power supply of motors must be cut off completely and the switch must be locked.
13 Be careful, sampling from inside the machine can never be carried out unless there is not any danger. Usually, the samples can be taken from the pipe under the machine instead of inside machine.
14 Clear off the deposited dust, dirties and materials frequently. Keeping the machine clean can enhance production safety and the cleaning level of workshop, and is also beneficial to dust explosion prevention.
15 If oil (grease) leakage occurs, clean it immediately and seal well the place where leakage occurs, and for oil or grease leaked on the floor will easily bring about hazards to the operator.
16 In production operation, the machine must be equipped with safety devices, which may be neither removed and abandoned nor reduced in functions. Otherwise, we are not responsible for any accidents resulted here from, and reserve the right to ascertain where the responsibility lies.
17 Please execute the special regulations on accidents prevention in the operating instructions provided us.
18 Only the trained professionals are allowed to operate the machine and equipment manufactured by Muyang.
19 Measures for environmental protection
If you decide not to use the machine any longer, the measures for environmental protection and reutilization should be taken: drain the liquids inside the extruder machine (like motor oil, gearbox oil, brake oil and coolant etc.) into special containers and send them to the preparation workshop. The plastic parts shall be picked out for reutilization. The metal parts shall be sorted out so as to be crushed or scraped.

The article is from :http://muyangmachineryshops.blogspot.com/2013/09/countermeasures-against-accidents-from.html

1. Hoisting
It can be seen from the following picture how the mixing machine is hoisted by a traveling crane. The rope must be capable of bearing the weight of equipment, and too short a rope is not usable. The lifting ears for hoisting are provided.



2. Transportation
When the mixing machinery is to be delivered out of the manufacturer’s plant, it can be decided according to the practical conditions whether a packing case should be used or not. If the packing case is not used, rainproof facilities should be provided and it is necessary to prevent the equipment from collision and overturning.
If the packing case is used, the whole machine and accessories should be firmly fixed inside the case, and a certain distance between the machine and the walls of the case should be maintained to avoid collision or damage during transportation. If the equipment exceeds the height limit, it should be packed in parts.

3. Storage
When the paddle mixer is to be stored for a long time, it is necessary to put it in a ventilated, dry, shady and cool place with rainproof and damp-proof facilities. The exposed surfaces without paint should be coated by antirust oil.

The article is from : http://steelsilos.blogspot.com/2013/08/transportation-and-installation.html

Operate according to the operating method strictly. Each shift on the grinding machine should well do necessary inspection and cleaning work.

The bearings shall be dismounted and cleaned once after 1000 hours working, and the grease shall be replaced at the same time and lithium base molybdenum disulfide shall be applied. Only 1/2-3/4 space inside the bearing cap can be filled with grease. The old grease should be cleared up before adding new grease. If too much grease is filled for grinding machines, the bearings will be overheated. When the bearings are severely heated or the grease outflows out, stop the machine immediately to deal with the troubles.



The damaged or severely worn parts shall be repaired or replaced in time. If the rotor parts (except pins and hammers) are to be disassembled and replaced, balance calibration must be conducted after reassembling. The dynamic balance quality shall be verified in accordance with the balance accuracy grade G 6.3 for rigid rotors of National Standard GB9239-1988. Additionally, the difference between the total masses of the hammers of two symmetrical groups in radial direction should not exceed 5 g.

If the grinding machinery is to be halted for a long time, it must thoroughly cleaned both inside and outside so as to avoiding rusting and screen blockage.

Muyang machine is directly driven through an elastic pin coupling, which should be installed very carefully after maintenance or repairing so as to avoiding the effects of precision deviation on machine running (see Table 5). After installation, the coupling should be checked to ensure that the height deviation between the two halves of the coupling ＜0.2 mm, and the misalignment ＜1°and the clearance (S) between the two halves 4-6mm.

The article comes from : http://my.opera.com/nikilei123/blog/2013/08/21/repair-and-maintenance-on-grinding-machine