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Shanghai Xiangshu Oumao Electromechanical Equipment Co., Ltd
1. We are in both Germany and the United Stateshavebranch office. We can provide you with 100% original packaging *!
2. It's not easy to find brands or small amounts, but we still purchase for you!
3. As long as it is a product from the European Union or the United States, we can inquire and purchase for you!
4. Welcome to inquire by phone anytime!
Inquiry requires:
1. The motor must have a product nameplate or serial number: (quoted based on nameplate in foreign countries),moreAccuracy)
2. It is necessary to confirm whether the brand and model of the product are accurate. (Many models simply don't match the brand)
3. Please leave your company's name on the inquiry page.
4. Our company is a large trade purchaser, and we are0inventory We don't have stock available. Please confirm if your product can accept delivery time.
The current advantageous brands of the company are:
Italian ELCIS encoder (agent brand)----------------------------------------★★★★★
Finnish NOKEVAL sensor transmitter digital display (agent brand)---------------------★★★★★
HEPCO bearings, guide rails, sliders, etc. from the UK (agency brand)-----------------------------------★★★★★
Radio-ENERGIE Encoder from France - Speed Motor, Centrifugal Switch (Agent Brand)---------------★★★★★
WEBER Sensor (Agent Brand) from the United States-----------------------------------------------★★★★★
Swedish HEMOMATIK Sensor (Agent Brand)
German BED IA level sensor, temperature sensor (agent brand)------------------------------★★★★★
German LENORD+BAUER encoder, LENORD+BAUER sensor (advantage brand)--------★★★★★
German TWK encoder, TWK sensor (agent brand)-----------------------------------★★★★★
HEIDENHAIN encoder from Germany (*)------------------------------------------★★★★
German WEIGEL ammeter, voltmeter (agent brand)----------------------------------------★★★★★
FRIZLEN resistors from Germany (agent brand)------------------------------------------------★★★★★
LAUMAS Weighing Sensor (Agent Brand) from Italy
MTS Sensor (Agent Brand) in the United States---------------------------------------------------★★★★
SCHUNK Claw Chuck from Germany (Advantageous Brand)------------------------------------------★★★★
German SMW opens, Claw (Advantageous Brand)
German BENDER monitors, insulation monitors, etc：(Advantageous brand)--------------------------------★★★★
STAUBLI switches, connectors, etc. from Germany (advantage brand)-------------------------------------★★★★
German STROMAG brake, switch (advantage brand)---------------------------------------★★★★
German EMG actuators, servo valves, amplification plates, etc. (advantageous brands)-------------------------------★★★★
MOOG servo valves, proportional valves, controllers, drivers, etc. from the United States (*)--------------------★★★★
German HYDAC sensors, HYDAC pressure switches, HYDAC temperature relays (*)------★★★★
German M&C detectors and sensors (advantageous brands)------------------------------------------★★★★
German PINTER switch (*)-------------------------------------------------★★★★
STOBER motors and brakes from Germany (advantage brand)
Austrian B&R sensors, etc. (*)-------------------------------------------------★★★
German NORELEM coupling, nut (*)
German PHOENIX relay, plug, switch (*)---------------------------------★★★★
HUBTEX Forklift Accessories from Germany (*)---------------------------------------------★★★
Swedish JOKAB relays, etc. (*)----------------------------------------------★★★
MAGTROL sensors, switches, programmable controllers, etc. from the United States (*)----------------------★★★
H2W electrical components from the United States (*)---------------------------------------------------★★★
Swiss BESTA level switch, float switch, sensor, etc. (*)---------------------------★★★
German WEIGEL ammeter, voltmeter (*)-----------------------------------------★★★
German KOBOLD flowmeter, flow switch, pressure switch, liquid level switch, etc. (*)-------------★★★
German KUBLER encoder (*)-------------------------------------------------★★★
German ARI valve body-----------------------------------------------------------------------★★★
German TIPPKEMPER MATRIX sensors, photoelectric switches, proximity switches, phototubes, etc--------------★★★
German SICK scanner---------------------------------------------------------------------★★
German VSE flowmeter----------------------------------------------------------------------★★
German SWAC control panel-----------------------------------------------------------------★★
German ARIS actuator---------------------------------------------------------------------★★
German JVM/JOST motor---------------------------------------------------------------★★
German FSG sensor encoder signal converter----------------------------------------------------★★
German WENGLOR sensor--------------------------------------------------------------★★
German BAUSER counter-----------------------------------------------------------------★★
BARKSDALE sensors and switches from Germany------------------------------------------------------★★
BAUER motors, reducers, brakes, etc. from Germany---------------------------------------------------★★
German WATT motor----------------------------------------------------------------------★★
German GRECON motor-------------------------------------------------------------------★★
German BERTHOLD detector detector, etc------------------------------------------------------★
German SCHORCH motor-------------------------------------------------------------------★
Bridgestone hoses from Germany--------------------------------------------------------------★
German IBA fiber optic card module--------------------------------------------------------------------★
German BUBENZER brake coupling----------------------------------------------------★
German HUBNER encoder------------------------------------------------------------------★
German IVO encoder------------------------------------------------------------------------★
FRAKO capacitors from Germany (FRAKO low-voltage compensation capacitors), etc---------------------------------------★
German EBM BROSA sensors, angle meters, amplifiers, etc-----------------------------------------★
German ELAU motors, controllers, speed controllers, drivers, etc-------------------------------------------★
German GESTRA valves, flow meters, etc----------------------------------------------------------★
German FRIZLEN resistors, etc-------------------------------------------------------------------★
NEXEN brake pads, clutches, brakes, friction plates, etc. from the United States-------------------------------------------★
COMETAG Instrument from Switzerland-------------------------------------------------------------------★
Spanish LIFASA capacitors (LIFASA electrolytic capacitors), etc-----------------------------------------★
Danish TELCO relays, etc-----------------------------------------------------------------★
METO-FER Switzerland-----------------------------------------------------------------------★
BOSTON gearbox motor from the United States---------------------------------------------------------★
BETA detector from the United States----------------------------------------------------------------------★
BALDOR motor from the United States----------------------------------------------------------------★

Signature:

At first glance at the material of the filter element

The main filtering material for air filters is filter paper. Nowadays, filter paper is mainly made of domestic and imported paper. Both domestic and imported paper have good filtering performance. However, the inferior filter paper used for counterfeit filters cannot prevent dust from entering the engine, thereby affecting its normal operation. The filter paper color of the general * filter element is uniform, and the paper surface is relatively flat; However, inferior filter cartridges have inconsistent colors, hairy paper surfaces, and poor texture.

Take a second look at the gum of the filter element

Nowadays, the structure of filter cartridges is generally composed of filter paper and rubber bonded together, and the gel of genuine and fake filter cartridges is also different. The rubber texture of genuine filter cartridges is good and elastic, while counterfeit filter cartridges have soft rubber and poor texture. A relatively easy way to distinguish is to fold the air filter in half. After loosening, the filter quickly returns to its original state, while counterfeit filters have poor adhesion to the filter paper due to rubber texture issues, with obvious marks in the middle of the fold.

In addition, some labels can be used, such as imported ones with line patterns, and of course, some domestic ones can also be imitated, but careful observation will make a difference.

Everyone knows that the grade used in water purifiers is PP filter element, also known as melt blown PP, made of polypropylene (PP material). Its main function is to filter various harmful impurities, organic pollutants, minerals, and other impurities with a diameter greater than 1 micron in tap water. Since it does not have a drainage function, its service life is generally 3-6 months. Therefore, it is necessary to regularly replace the filter element, otherwise it will cause secondary pollution problems and the water quality cannot be guaranteed. According to the usage range, it can be divided into 10 inches to 40 inches, and can be customized according to special requirements such as density, length, and weight. First, let's look at the density. PP can be divided into 1um and 5um based on the difference in pore size. Then, the weight is also around 100g and 110g. The pore size cannot be recognized by the naked eye, but the weight and tactile sensation can be distinguished by hand. The quality of the filter element directly affects the quality and filtration effect of the water purifier, so commonly used 1 micron and 5 microns are generally used, with the heavier one being the best choice. At the same time, because PP cotton filter cartridges are usually used in the first three stages, they must be replaced regularly, otherwise it will have an impact on the service life of the RO membrane and the TDS value of the effluent water quality.

Is the PP cotton filter harder or softer? In fact, a high density and sturdy grip indicate high compressibility, longer filtration accuracy and service life. However, soft PP may scatter after high water pressure or prolonged use, causing a decrease in filtration and affecting the normal operation of the RO machine. Therefore, PP, which has advantages in both quality and price, is necessary to fundamentally improve the quality of the entire water purifier.

Service life

The service life of the filter element will also vary depending on the raw materials used. As the usage time prolongs, impurities in the water will clog the filter element, and the activated carbon filter element will become saturated with adsorption. So, generally speaking, PP filter cartridges need to be replaced after 3 months, while activated carbon filter cartridges need to be replaced after 6 months. Hollow fibers, due to their inability to be cleaned, are usually placed at the back end of PP cotton and activated carbon for use, otherwise they are more prone to clogging. If used as end sterilization equipment for water purification, they need to be replaced after 1-2 years. Ceramic filter cartridges can generally be used for 10-12 months, and good ceramic filter cartridges can be used for 3-5 years or even longer.

Replace signal:

1. Slow water production: Is the pre filter element or reverse osmosis membrane clogged;

2. Producing water too quickly (filling a bucket in less than an hour): The reverse osmosis membrane is damaged;

3. Poor taste: The lifespan of the rear activated carbon filter has expired; RO membrane removal rate less than 75%: The lifespan of the reverse osmosis membrane has expired.

The calculation formula for membrane removal rate is: RO membrane removal rate=(TDS value of raw water - TDS value of pure water) * 100%/TDS value of raw water

Maintenance and upkeep:

1. The hydraulic oil filter element is the core part of the filter, which is composed of special materials and is a vulnerable part that requires special protection and maintenance.

2. After the filter in the system has been working for a period of time, the hydraulic oil filter element in the filter has intercepted a certain amount of pollutants and impurities. At this time, the pressure increases, the flow rate gradually decreases, and the transmitter will remind an alarm. At this time, it is necessary to clean the impurities in the filter element in a timely manner and clean the filter element.

During the process of cleaning the filter element, we must be careful not to deform or damage the hydraulic oil filter element. Otherwise, it cannot be reused to avoid affecting the filtration efficiency and causing damage to the entire system.

It is mainly used on air compressors to adjust the start and stop status of the air compressor. By adjusting the pressure in the air storage tank, the air compressor can be stopped and rested, which has a maintenance effect on the machine When debugging in the air compressor factory, adjust the pressure according to customer needs and then set a pressure difference For example, when the compressor starts, it pumps air into the air storage tank. When the pressure reaches 10kg, the air compressor stops or unloads. When the pressure reaches 7kg, the air compressor starts again. There is a pressure difference during this process, which allows the compressor to take a break and protect it[5] .

The compressor is directly driven by an electric motor, causing the crankshaft to rotate and the connecting rod to cause the piston to reciprocate, resulting in a change in cylinder volume. Due to the change in pressure inside the cylinder, air enters the cylinder through the air filter (muffler) through the intake valve. During the compression stroke, due to the reduction in cylinder volume, compressed air passes through the exhaust valve and enters the air storage tank through the exhaust pipe and one-way valve (check valve). When the exhaust pressure reaches the rated pressure of 0.7 MPa, it is automatically stopped by the pressure switch control. When the pressure of the gas storage tank drops to 0.5-0.6 MPa, the pressure switch automatically connects and starts.

Switch structure

For different temperature measurement ranges, temperature switches with different structures should be selected. In the temperature range of 0 ℃ to 100 ℃, solid expansion type temperature switches are usually used. In the temperature range of 100 ℃ to 250 ℃, gas expansion type temperature switches are mostly used. For the temperature range above 250 ℃, only thermocouples or resistance thermometers can be used. After being measured by transmitters, the electrical signals are converted into analog signals, which are then converted into switch signals[6] .

The working principle of a solid expansion type temperature switch is to use the difference in length changes of different solids after heating to generate displacement, thereby causing the contacts to move and outputting a temperature switch signal. For example, there is a temperature switch made of bimetallic sheets (brass sheets stacked on top of indium steel sheets). Due to the higher coefficient of linear expansion of brass sheets compared to indium steel sheets, the bimetallic sheets will bend when heated. When the specified temperature is reached, the free end of the bimetallic strip (the moving contact of the temperature switch) generates sufficient displacement, disconnects from the fixed static contact, and sends out a switch signal.

The gas expansion temperature switch operates based on the principle of a gas pressure thermometer. It has a temperature measurement package filled with nitrogen gas, which is connected to the measuring element of the pressure switch through a sealed capillary tube. When the measured temperature reaches the specified value, the inflation pressure inside the temperature pack activates the pressure switch.