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12

2022-12

Reasons for Noise in Industrial Vacuum Cleaners

When using industrial vacuum cleaners, you’re bound to encounter some rather unusual noises. So how can you identify the causes of these noises? 1. If your industrial vacuum cleaner’s dustbin or filter emits a “tap-tap” sound—indicating hard objects colliding—this suggests that the machine has sucked in metal particles, metal fragments, or other relatively hard, bulky objects. This could potentially damage the filter element. In such cases, simply stop the machine, remove the foreign objects from inside, and prevent further damage by avoiding contact between hard objects and the filter material. 2. If the motor area produces abnormal sounds like “tap-tap” or “click-click,” the source of the noise in your industrial vacuum cleaner could be due to the impeller being deformed and rubbing against the housing, or possibly because the rotor is touching the stator. Another possible cause is damage to the motor bearings. If these issues aren’t addressed promptly, they could lead to motor failure, and even overheating and ignition due to friction. As soon as you notice such noises, immediately stop the machine, disassemble the motor or impeller cover, and inspect which parts are experiencing abnormal friction or collisions. Then, adjust or repair the affected components accordingly. 3. Industrial vacuum cleaners typically have very strong suction power. If you use a vacuum nozzle or brush that’s too small or inappropriate for the job, not only will this affect the cleaning performance, but it can also cause the equipment to emit sharp or unusual noises.

2022-12-12

Let me introduce you to the Karcher BR55 floor scrubber.

12

2022-12

Let me introduce you to the Karcher BR55 floor scrubber.

Karcher BR55/4c Floor Scrubber The BR55 is a rotary-brush floor scrubber. With higher efficiency, lower energy consumption, and an eco-friendly design, it’s truly perfect. This equipment has a wide range of applications and is ideal for cleaning large-scale venues. It can be used in: factories, supermarket stores, large shopping centers, hospitals, health centers, stadiums and arenas, airports, train stations, and more. Its quiet 63-decibel design further provides users with a tranquil and comfortable environment. 1. The front wheels made of polyester material perform exceptionally well on both dry and wet surfaces, as well as on slopes. 2. A brand-new rubber material concept delivers the best drying efficiency, achieving outstanding results even on tiled floors. 3. The quiet design ensures that the operating noise level is only 63 dB(A), completely avoiding any disturbance to the normal working environment. 4. Equipped with a large-capacity battery and featuring low power consumption, it can operate continuously for up to 4.5 hours in normal mode. 5. The EDS-ECO system automatically adjusts the water and detergent ratios. The “Evergreen” function automatically provides the optimal combination of water volume, detergent ratio, and roller brush pressure for even better cleaning performance.

2022-12-12

Fun Facts About Vacuum Cleaners [Watch] [Watch]

12

2022-12

Fun Facts About Vacuum Cleaners [Watch] [Watch]

I. First, let’s introduce the preparatory steps before using a wet-and-dry industrial vacuum cleaner: 1. Check whether the power cord, plug, switch, and other components of the wet-and-dry vacuum cleaner are damaged. If so, they need to be repaired or replaced. 2. Ensure that the interior of the wet-and-dry vacuum cleaner’s dustbin is thoroughly cleaned and that all accessories (such as suction tubes, brushes, dust bags, etc.) are free from blockages. 3. Check the overall suction power of the wet-and-dry vacuum cleaner to confirm that it’s functioning properly. If not, inspect the connections between various components and ensure that the sealing ring at the base of the nozzle is in good condition. 4. Confirm the cleaning task for the working environment. If you’re vacuuming dry materials, make sure to install the dust bag; if you’re vacuuming liquids, you don’t need a dust bag. However, do not use the wet-and-dry vacuum cleaner in areas with excessive debris or sludge. II. Precautions during operation of the wet-and-dry industrial vacuum cleaner: 1. Check whether the motor plug of the wet-and-dry vacuum cleaner is securely and firmly inserted. Otherwise, when powered on, the motor may run unevenly, resulting in insufficient suction power and reducing the motor’s lifespan. 2. When using the wet-and-dry vacuum cleaner for vacuuming or water extraction, control the motor flexibly. For example, if a three-motor unit can achieve the desired result with just one or two motors, there’s no need to activate the third motor. However, for large-area cleaning tasks, try to use all three motors in rotation. 3. If the wet-and-dry vacuum cleaner is operating in an environment where foam is present or likely to form, be sure to add an anti-foaming agent into the dustbin to eliminate the foam. Do not allow the foam to enter the motor along with the strong airflow. 4. During the use of the wet-and-dry vacuum cleaner, the power cable should not be excessively long, and you must not extend it yourself. The cable diameter must meet the specifications required by the machine. Also, avoid coiling the power cable tightly, as this can create a magnetic field and lead to insufficient voltage supply. 5. Pay attention to any changes in the noise level of the wet-and-dry vacuum cleaner’s motor. If the motor noise suddenly becomes deeper or more pronounced, check the connecting pipes or verify that the dustbin is full. In such cases, clean the pipes or remove objects from the dustbin. Another possible cause of loud noise is a problem with the vacuum cleaner’s motor itself, which requires timely repair. 6. When the wet-and-dry vacuum cleaner is used to collect liquid substances, remove the nozzle assembly first. Do not invert the machine, ensuring that no liquid enters the motor. Also, make sure that no corrosive substances get into the motor, as this could cause damage.

2022-12-12

13

2022-12

The difference between floor scrubbers and manual floor cleaning.

1. Ride-on floor scrubbers can clean and dry between 3,000 and 5,000 square meters per hour, effectively replacing manual mopping. Hand-push battery-powered floor scrubbers can clean and dry up to 2,000 square meters per hour, also serving as a substitute for manual cleaning. 2. These machines have low operating costs—typically only a few yuan in electricity per day—and their wear-and-tear parts are inexpensive, requiring replacement only 2-3 times per year. 3. Mechanized operations deliver excellent results, high efficiency, fast speeds, and easy management. They represent an inevitable trend in the development of the cleaning industry. 4. Generally, these machines are more than 10 times as efficient as manual cleaning. The exact efficiency gain may vary depending on the specific model and the layout of the cleaning area. In short, floor scrubbers offer time savings, labor savings, cost savings, high efficiency, and superior cleanliness. Classification of Floor Scrubbers: By drive type, floor scrubbers can be categorized into: semi-automatic floor scrubbers, fully automatic floor scrubbers, and hand-push floor scrubbers. By power supply method, they can be divided into: corded floor scrubbers and battery-powered floor scrubbers. By operation mode, they include: hand-push floor scrubbers and ride-on floor scrubbers.

2022-12-13

13

2022-12

The primary uses of explosion-proof valves

Explosion-proof valves are primarily used in hydraulic systems of large-scale mechanical stages, lifting platforms, elevators, and vehicle inspection and repair frames—equipment that lacks mechanical locking systems. Their main function is to provide protection and prevent safety accidents. They constitute a type of locking mechanism within hydraulic systems. This requirement is mandatory for CE certification; thus, explosion-proof valves were first invented and manufactured in Europe. Later, they were introduced to China and have since gained widespread adoption. Explosion-proof valves feature a simple structure and a compact, space-saving design, making them easy to connect directly to the inlet of the actuator unit.

2022-12-13

13

2022-12

What should I do if the high-pressure washer’s hose is clogged?

When using cleaning equipment, to achieve even more thorough cleaning results while reducing water consumption and enhancing cleaning efficiency, it’s essential to ensure operational stability and meet stringent standards for an environmentally friendly cleaning process. This can be accomplished by adjusting the impact pressure and water flow rate appropriately to maintain a balanced cleaning performance. Regarding the degree of reaction between the equipment and the pipelines, using a high-pressure washer can significantly improve cleaning effectiveness. In particular, this approach enhances the system’s responsiveness to potential malfunctions. But what if the pipeline becomes clogged—how should we address that issue? 1. Replace the pipeline with a larger-capacity one Pipeline blockages can result from various factors. When the pipeline’s internal volume is relatively small, this can severely affect the fluid flow and its overall performance. Therefore, replacing the existing pipeline with a new one that has a larger capacity is often the best solution. In designing the new pipeline, it’s crucial to select a configuration that accommodates a greater water flow capacity. 2. Use cleaning agents to resolve blockages During the operation of high-pressure washers, nozzle clogging can occur due to accumulated debris or other obstructions. Depending on the severity of the blockage, applying a suitable cleaning agent can effectively dissolve the buildup and restore smooth water flow through the pipeline.

2022-12-13

13

2022-12

“Science Popularization China”—Explosion-Proof Valve

Pressure Relief Device for Explosive Pipelines or Equipment Explosion-proof Valve The explosion-proof valve is used in dust removal systems containing flammable gases or combustible materials and can serve as a pressure relief device for explosive pipelines or equipment. The diaphragm of the explosion-proof valve is typically calculated based on the operating pressure of the dust removal system and the concentration of combustible substances, after which the material and thickness are selected. It is crucial to avoid improper selection that could affect the normal operation of the system.[1] There are generally two types of explosion-proof valves: horizontal and vertical. Both types adopt a structure with an explosion-proof diaphragm covered by a cap. The vertical explosion-proof valve is installed on the cylinder body, while the horizontal one is mounted on the top. Explosion-proof valves are primarily used in hydraulic systems of large-scale mechanical stages, lifters, elevators, automotive inspection and repair frames, and other equipment without mechanical locking systems. They mainly provide protection against safety accidents and serve as a locking measure for hydraulic systems. This requirement is mandatory in CE certification, so explosion-proof valves were first invented and produced in Europe. Later, they spread to China and have since been widely adopted. The explosion-proof valve has a simple structure and a compact, small size, making it easy to connect to the inlet of the actuator unit. Working Principle The working principle of the explosion-proof valve: The solenoid valve contains a sealed cavity with through-holes at different positions, each hole leading to a different oil pipe. In the middle of the cavity is a valve, with two electromagnets on either side. When the coil of the magnet on one side is energized, the valve body is attracted to that side, thereby controlling the movement of the valve body to block or allow the flow through different oil discharge holes. The oil inlet port is normally open, allowing hydraulic oil to enter different oil discharge pipes. Then, the oil pressure pushes the piston, which in turn drives the piston rod, and the piston rod moves the mechanical device. Thus, by controlling the current flowing through the electromagnets, mechanical motion is controlled. Operating Conditions 1. Pressure range: -10 kPa ~ +20 kPa 2. Temperature range: -20℃ ~ 395℃ Installation Location On the boiler body and the flue duct before the dust collector, where internal explosions are likely to occur. Installation Requirements 1. The explosion-proof valve can be installed at any angle. 2. The minimum spacing between two explosion-proof valves is 200 mm. Structure The explosion-proof valve has a simple structure, consisting of a steel welded cylinder body and an explosion-proof diaphragm. When the system pressure exceeds 0.1 MPa or the set pressure, the explosion-proof diaphragm ruptures automatically, preventing the system from exploding and ensuring production and personal safety. This valve comes in two types: circular (Type I) and square (Type II).[1] Main Dimensions of Explosion-Proof Valves (mm) A×A B×B C×C H n×d Mass/kg DN D D1 H n×d Mass/kg 200×200 270×270 305×305 220 8×φ18 40 200 305 270 220 9×φ18 37 250×250 335×335 370×370 250 12×φ18 48 250 370 335 250 12×φ18 44 300×300 385×385 425×425 300 12×φ18 54 300 425 385 300 12×φ18 55 350×350 435×435 477×477 350 12×φ18 67 350 477 435 350 12×φ18 65 400×400 490×490 536×536 400 12×φ18 85 400 536 490 400 12×φ18 82 450×450 540×540 588×588 450 16×φ18 99 450 588 540 450 16×φ18 94 500×500 600×600 649×649 500 16×φ18 112 500 649 600 500 16×φ18 108 600×600 700×700 750×750 550 16×φ18 152 600 750 700 550 16×φ18 142 700×700 800×800 850×850 550 16×φ22 204 700 850 800 550 16×φ22 180 800×800 900×900 950×950 600 20×φ22 228 800 950 900 600 20×φ22 202

2022-12-13

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