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Valve bags are mostly used for filling granular or powdery materials, which are used for loading and unloading bulk materials for convenient transportation. So do you know how valve bags are filled?
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1. Valve bag filling process
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The square bottom machine can use valve pockets to contain all kinds of fine powder and ultra-fine powder materials with low bulk density, strong air affinity, good or bad self-flowing properties.
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The discharge port is unobstructed, the filling starts, the material enters the dividing wheel from the outer silo, and enters the ash hopper from the feeding port on the machine base. The material is evenly sent to the discharging port through the smooth rotation of the impeller. Lightly touch the travel switch on the right side of the material nozzle, the sealing cylinder shrinks, and the material falls into the bag smoothly.

Using the valve bag packaging machine, the material is evenly filled into the valve bag through the discharge seat, and then the filling amount is controlled by weight, and the sealing cylinder extends into the working state to seal the discharge port. That’s all for the valve bag filling process.

2. Advantages of automatic filling and molding of valve pockets
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(1) The valve bag can withstand high temperature filling at 70~80℃ and dozens of handling turnovers.

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For more details click to visit:https://www.lyhuatianm.com/products-information/valve-bag-filling-process.html

In order to facilitate the transportation of apartment beds, manufacturers usually disassemble the beds for transportation. After the customer receives the goods, the staff will assemble them. This installation process will take a long time. Efficiency and other issues, apartment bed manufacturers have sorted out some precautions and maintenance methods for apartment bed installation, hoping to help everyone.

Matters needing attention before installing the apartment bed

1. Clean up the site

Complete the cleanup of the installation site. The porters and installers of the apartment beds all have specific job contents and are not responsible for cleaning the site. If the cleaning work is not done in time, it is easy to cause a delay in the installation time, and it will also lead to an increase in labor costs.

2. Confirm the installation team

It is necessary to communicate with the apartment bed manufacturer in advance to confirm that there are several people in the team and who is in charge. This can also better communicate, improve work efficiency, and avoid unnecessary emergencies during the installation of apartment beds that affect acceptance and later use.

Matters needing attention in the installation of apartment beds

1. Avoid bumps

The apartment bed is a large item, and the weight is not light. At least two people can move it. When moving, pay attention to whether it will touch the wall, wipe the floor and other items, and pay attention to the safety of personnel.

2. Place smoothly

When placing the apartment bed, the ground should be kept flat, and the four legs of the bed body should be stable and flat on the ground.

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For more details click to visit:https://www.aoyangschoolfurniture.com/aoyang-news/apartment-bed-installation-precautions.html

If the material wants to be screened, it must pass through the screen on the linear vibrating screen. When using the screen, a very critical factor is the tension of the screen, which is related to the screening effect of the material and the linear vibrating screen. production efficiency. Because the insufficient tension of the screen mesh will bring many influences, what are the influences of the insufficient tension of the linear vibrating screen mesh? How to solve it?

Influence of insufficient tension of linear vibrating screen mesh

1. Lead to material retention

Insufficient tension of the screen mesh of the linear vibrating screen will lead to the retention of materials, thereby preventing the forward movement of the material layer, which may lead to the accumulation of materials, or even block the screen mesh, affecting the production efficiency of the vibrating screen. Therefore, it is necessary to increase the tension of the vibrating screen to flatten the screen surface, thereby increasing the service life of the vibrating screen, and at the same time contributing to the power and productivity of the vibration. Part of the screening will concentrate on the force for a long time, which will easily cause the screening to break, and screen the materials that should not be screened, which will affect the screening effect.

2. Serious stress concentration

If the screen tension of the linear vibrating screen is large, the stress concentration will be serious. If the screen tension is loose, it is easy to produce secondary vibration, and the screen will be damaged prematurely under the action of alternating stress, which will increase the production cost.

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For more details click to visit:https://www.hsd-industry.com/news/influence-of-insufficiency-of-screen-tension-of-linear-vibrating-screen/

Now in many offices, there will be bookshelves, mainly to store some materials, books, sundries, etc. It can bring us great convenience, but on the issue of how to buy bookshelves, many people still do not know Understand, today office furniture manufacturers will talk to you about how to buy bookshelves, so that you can also have a clear understanding.

How to choose a bookshelf

Generally, when we choose a bookshelf, firstly, we need to look at the material of the bookshelf. Of course, we should choose some products that are corrosion-resistant, strong bearing, easy to take care of, and resistant to dirt. Secondly, we need to see whether the structure of the bookshelf is reasonable. Will be more durable and long life.

1. Pay attention to the internal dimensions of the bookshelf.

Before buying a bookshelf, you should consider the books to be placed in the future and the size of the files before purchasing.

2. Pay attention to the load-bearing capacity of the bookshelf.

Books are heavier and different from items stored in other furniture, so they have high requirements for firmness, especially the firmness of the horizontal plate in the middle of the bookshelf and the vertical shelves at both ends of the horizontal plate are important components related to the load-bearing of the bookshelf, and must be strong. , The vertical support force should also be strong, so that the whole can be firm and durable, so when purchasing bookshelves, you must choose a strong and firm one.

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For more details click to visit:https://www.etegreen.com/blog/how-to-choose-a-bookshelf/

General regulations:

1. Operators and maintenance workers of coal centrifuges must undergo relevant training, and be issued with certificates after passing the examinations.

2. All operators must wear labor protection (including work clothes, hats, shoes, gloves, etc.) according to regulations. Female workers must put their hair braids in their hats. It is forbidden to wear scarves, wear high heels and slippers or work barefoot on site.

3. When cleaning the work site, it is strictly forbidden to wash electrical equipment, cables, lighting, signal lines and equipment transmission parts with water, and do not pour the bearing bush with water to cool down.

4. The work site should always be kept tidy and clean, the ground should be “Five No Leaks” (no coal, no water, no dust, and no debris), and the equipment should be “five no leaks” (no coal, no water, no leakage). No oil, no electricity, no air leakage).

5. The pressure protection and torque limit locking device of the compulsory lubrication system must be complete and intact, sensitive and reliable in action, and it is strictly forbidden to throw it away.

6. The coal centrifuge should be started when there is no load, and it is forbidden to feed in materials or rinse with water before it is started.

7. The coal-carbon centrifuge fails during operation and must be shut down for processing. Before overhauling or opening the observation hole, overhaul hole or locking device, the system must strictly implement the power failure tagging system.

8. The feed of the coal-carbon centrifuge should be kept uniform, and debris, especially iron, should be prohibited from entering the machine. Overload operation is strictly prohibited during operation.

Operating procedures

(1) Check before driving:

1. Check whether the oil level in the fuel tank is appropriate (the appropriate oil level is 3/4~1/2 of the observation window), whether the oil is clean and meets the requirements, whether all cover bolts are fully tightened, and whether there are sundries around that affect the centrifugation The factor of the flexible operation of the machine, there is no debris or loose parts on the screen basket.

2. Turn each rotating wheel by hand to see if the centrifuge can rotate freely (flexibly. Check the tightness and wear of each V-belt, and see if there is any breakage or job-hopping.

3. Check whether the inspection holes and observation windows are tightly closed, and whether the fasteners are firm

4. The start sequence of the centrifuge is: first start the oil pump motor, wait until the oil pressure is normal, then start the main drive motor, and finally start the vibration motor.

(2) Start and stop

Start the car

1. The operation of this equipment is divided into two operation modes: centralized control automatic operation and on-site manual operation. During the normal production period, the centralized control automatic operation mode is adopted, and the on-site manual operation mode can only be adopted in the case of maintenance and failure. The conversion between the two modes is done by centralized control by clicking on the corresponding device icon and then selecting centralized or local completion, or by selecting the operation mode of the entire system from the control homepage as centralized or local completion. Note: The front and rear locking relationship of each device is released when operating in the local manual operation mode. Try to avoid using it in production!

2. Centralized control automatic operation mode: After receiving the command to start the vehicle in the centralized control room, after checking and confirming that there is no maintenance and other personnel work on the associated equipment near the equipment and before and after the equipment, open the lock of the equipment control button and notify the central office. The control room can start the car. The starting process is automatically completed by program control.

3. Check the normal operation of the equipment, vibration and lubrication, and notify the centralized control room for normal coal production.

4. On-site manual operation mode: first contact the centralized control room to confirm whether the equipment is in on-site mode. On the premise of checking and confirming that there is no maintenance and other personnel working on the associated equipment near the equipment and the front and rear of the equipment, open the lock of the equipment control button, and press the start button of the lubricating oil pump to start the oil pump. When the oil pressure exceeds 0 8 bar [delay 30 seconds], press the start button of the main drive motor to start the main motor. After the host is running normally [delay 5 seconds], press the vibration motor start button to start the vibration motor. When the vibration is normal, the start-up process of the whole machine is completed, and the feeding and production can be performed normally.

Stop the car

1. Normal centralized control automatic parking is automatically completed in sequence after the centralized control room clicks the system parking button of the corresponding system.

2. On-site manual normal shutdown method: first stop feeding. After all the materials in the equipment in operation are drained and thoroughly rinsed with water, the machine can be shut down. First, press the stop button of the vibration motor and the main drive motor one after another, and then press the stop button of the oil pump after the equipment is completely stationary.

3. In the centralized control mode, the equipment can be parked by pressing any parking button on the spot.

4. When the oil pressure of the pressure switch drops below the specified value (0.3 bar for the TEMA HSG1400 type) due to the loss of lubricating oil, pipe rupture, blockage, etc., the pressure switch will automatically stop the main motor power supply to achieve shutdown.

5. When the coal centrifuge is overloaded due to material overload, debris jam or mechanical failure, the torque limiting device will automatically stop the main motor power supply to achieve shutdown.

2. Matters needing attention during operation:

1. Pay attention to any abnormal sound during operation, check immediately and eliminate the cause before starting the machine, but note that the number of stops within one hour cannot exceed four times.

2. The feeding requirements are uniform. Pay attention to the filtrate discharge system should have sufficient air volume. The blockage of the ventilation pipe will affect the moisture of the product. The product moisture is high and there are coarse particles in the filtrate. The reasons must be checked and dealt with.

3. Pay attention to whether the mechanical operation and vibration are abnormal, the normal amplitude is 4~5mm, pay attention to the oil level of the lubricating oil tank and the oil return of the oil pipe, pay attention to whether the pressure gauge is normal, and the normal outlet oil pressure is 3.0~3.5 bar. Any situation that occurs should be investigated for the cause, and the system can be turned on only after the treatment is normal.

4. Pay attention to the temperature of the lubricating oil, the normal temperature rise is not more than 35C, and the temperature is not more than 80C.

5. The operation of the equipment should be under the centralized control of the whole plant, pay attention to whether the automatic protection device is working, and the reliability of the pressure switch should be checked regularly.