Smooth operation, low noise, long service life, large flow, power saving

1. The first is environmental protection, sanitation and pollution-free, the equipment is a fully sealed structure, bacteria and dust will not enter the system; the breeding of algae is avoided, and the secondary pollution of water sources and water supply water pollution problems are prevented. Standard tap water.

2. Secondly, in terms of technology, the frequency conversion pump integrates a number of advanced technologies such as vacuum suppression technology, fluid control technology and intelligent frequency conversion technology, and the automatic non-negative pressure variable

frequency water supply equipment is directly connected in series with the water pipe network to achieve stable voltage and energy saving. , hygienic, safe and reliable operation, no negative pressure, no need to build pools, water tanks.

3. Remarkable energy saving effect, fully enclosed structure operation, automatic non-negative pressure variable frequency water supply equipment. Avoid seepage, run, run, drip, leak and other phenomena, no pool, water tank, saving water for disinfection and flushing. It is directly connected

in series with the tap water pipe network, which can make full use of the original pressure of tap water, make up as much as the difference, and the equipment will stop working when the tap water meets the requirements. The tower-free automatic non-negative pressure variable frequency water

supply equipment operates at a lower frequency most of the time, and consumes less power. The frequency conversion technology is adopted to further save energy, and the comprehensive energy saving can generally reach more than 50%.

4. The operation is reliable and has no effect on the water pipe network. The equipment uses the regulating tank to automatically adjust without negative pressure. When the pipe network is pressurized for water supply, it will not produce negative pressure on the original pipe network, and will not affect the normal water use of other users.

5. Investment saving, no need to build reservoirs or water tanks, saving civil construction investment; no need to pressurize from zero, therefore, fully automatic non-negative pressure variable frequency water supply equipment. Compared with the selection, the equipment investment is reduced; the water quality is not polluted, no purification equipment is required, and the

investment is saved. The pressure of the water pipe network can be fully utilized, the energy consumption is small, and the daily electricity expenses are saved. There is no pool and water tank, saving the cost of regular cleaning and disinfection.

6. The configuration is flexible, and the electrical control part can be controlled by frequency conversion constant (variable) pressure, or directly controlled by pressure (BZG air pressure type).

7. Investment saving, no need to build a reservoir or water tank, saving civil construction investment; no need to pressurize from zero, so the equipment selection is better, automatic non-negative pressure variable frequency water supply equipment, investment reduction; no water

pollution, no need for purification equipment , save investment. The pressure of the water pipe network can be fully utilized, the energy consumption is small, and the daily electricity expenses are saved. There is no pool and water tank, saving the cost of regular cleaning and disinfection.

Analysis of the working principle of the inverter. Let's talk about the working principle of frequency conversion one by one.

When the inverter is repaired, only the above basic circuits are not enough, and the following main circuits must also be deeply understood. The main circuit is mainly composed of a rectifier circuit, a current limiting circuit, a filter circuit, a braking circuit, an inverter circuit, and a detection and

sampling circuit. Drive circuit The drive circuit provides the drive signal to the transducer (inverter module) as an inverter circuit after photoelectric separation and amplification of the 6 PWM signals generated from the CPU in the main control circuit. Various requirements for the drive circuit differ

depending on the ventilation element. At the same time, some developers have developed many dedicated drive modules, which are suitable for various ventilation devices. Some brands and models of inverters use direct dedicated drive modules. However, most inverters use drive circuits. From a repair point of view, a typical drive circuit is described here.

The driving circuit includes a separation amplifying circuit, a driving amplifying circuit and a driving circuit power supply. The three bridge arm drive circuits are three independent drive power circuits, and the three bridge arm drive circuits are common drive power circuits. 2) When the inverter is

abnormal, the protection circuit reduces it to zero in order to minimize the loss caused by the inverter abnormality. Inverters of various brands pay attention to the protection function, increase the protection function, and strive to improve the effectiveness of the protection function. In the

field of inverter protection functions, manufacturers can be said to have exhausted their knowledge and wrote good articles. As a result, the diversity and complexity of inverter protection circuits are formed. There are traditional detection protection circuits and software integrated protection

functions. Some inverters have internal protection functions such as drive circuit modules, intelligent power modules, and rectifier-inverter combination modules. The circuit shown is a more typical overcurrent detection protection circuit. It consists of three parts: current sampling, signal separation and amplification, and signal amplification and output.

Switching power supply circuit The switching power supply circuit supplies low-voltage power to circuits such as the operation panel, the main panel, the drive circuit, and the fan. The DC high

voltage P terminal is applied to the primary end of the high-frequency pulse transformer, and the switching regulating tube is connected in series to the other secondary end of the pulse transformer, and then connected to the DC high voltage N terminal. The switch tube is periodically turned on/off

to convert the primary DC voltage into a rectangular wave. Through the secondary coupling of the pulse transformer, the corresponding DC output voltage is obtained after rectification and filtering. In addition, the output voltage is sampled and compared, and the pulse width adjustment circuit is

controlled to stabilize the output voltage to change the pulse width. 4. If the inverter is controlled by programmable (PLC) or upper-level computer, man-machine interface, etc., the communication circuit on the main board must transmit signals to each other through the communication interface. 5. External control circuit The external control circuit of the converter is mainly frequency setting

voltage input, frequency setting current input, forward rotation, reverse rotation, jog and stop operation control, and multi-stage rotation frequency control. The frequency setting voltage (current) input signal is input to the CPU via the A/D conversion circuit in the inverter. Some other control is passed to the CPU via opto-coupled separation of the input circuits within the inverter.

There are various types of pumps, and the selection work should be done according to the actual needs of the lift, so as to help save energy. During the installation process, an appropriate lifting

device should be selected to ensure that the lifting weight can bear the weight of the pump, and an appropriate margin should be reserved. The manual rotating impeller should be strictly inspected before being officially lowered to ensure that it has sufficient flexibility. In order to ensure the safety of the variable frequency water pump, it is required to set the grounding wire, which should be

longer than other wires. In addition, use a multimeter to check the continuity performance of the three-phase line. The three-phase-to-ground insulation resistance of the variable frequency water pump should be checked before power-on. Considering that the water pump works in the

underwater environment for a long time, the corresponding leakage protection device should be set up to save electricity to the maximum extent while ensuring safety.

When the variable frequency water pump enters the running state, observe whether the voltage and current of the motor fluctuate violently before and after starting. If the motor is connected to the power supply but does not rotate, the power supply should be disconnected immediately to prevent the motor from burning. For the water pump that is running for the first time or has just been

overhauled, the test machine can only be started on the spot. If an abnormality is observed, it should be stopped immediately, and it is allowed to be put into use after the fault is eliminated.

1. Drain the remaining water in the pump and pipeline.

2. If the disassembly is convenient, the water pump and pipeline can be disassembled and cleaned up.

3. Check the ball bearing, if the inner jacket is worn, swayed, the ball is worn or the surface has spots, it should be replaced. If the bearing can still be used, clean the bearing with gasoline or kerosene and save it with butter.

4. Check whether there are cracks or small holes on the impeller, and whether the fixing nut of the impeller is loose. If it is damaged, it should be repaired or replaced. Check the clearance at the wear reducing ring of the impeller, if it exceeds the specified value, it should be repaired or replaced.

It is best to keep it on all the time to maintain a good underwater environment.

The main function is to "spin" the water in the fish tank, imitating the natural water flow, so that the water flow in each water layer of the fish tank is even and there will be no dead water areas.

However, when the fish tank reaches a certain length, there will be areas that the filtered water cannot reach, which is often referred to as the still water area or dead water area.

Using an upper-filtered fish tank, it can be seen intuitively that in addition to the impact of water flow in the launching area, there will be static floating objects in the water and accumulation of garbage and sediment in other areas.

Haohai Aquatic Equipment Products Factory was established in 2012 and is located in Zhongshan City, Guangdong Province, China, with an advantageous geographical location. It is a manufacturer with rich experience in aquarium accessories and equipment manufacturing. It is a production-oriented manufacturer integrating production, sales, cross-border trade and design.

Mainly produces all kinds of air stones, magnetic brushes, diffusers, thermometers, filters, air conditioner switches, fish tank cleaning tools, aquarium pet equipment, oxygen generators, fish tank check valves, ultra-quiet air pumps, aquarium oxygen-enhancing stones, plastics, resins Crafts and other products.

The plant covers an area of ​​3000 square meters+. The company also supports processing with supplied materials, sample processing, OEM processing, OEM processing, drawing processing, manual processing, etc. The company has a complete and scientific quality management system.

The company always adheres to the tenet of "honesty, quality cornerstone, high-quality service, and abide by the contract". With high-quality products, good reputation and high-quality services, the products sell well in nearly 30 provinces, municipalities and autonomous regions across the country. Wholeheartedly cooperate with domestic and foreign merchants for win-win cooperation, common development, and create brilliance together.