The problem with the filter, what is the reason why the filter does not filter

Oh, in this way, you use session, check when the session is empty, don't show it, so that's fine, use session to assign a value to the session after logging in.

Only processed at the time of the filter. If it's a login page, let it pass.

The filter of the fish tank cannot effectively filter the water quality, and there are the following possibilities:

1. The power of the pump is too small, resulting in a mismatch between the flow rate and the filter cylinder.

2. There is too little filter material to treat the water quality with enough nitrifying bacteria.

3. The ratio of filter material is improper, and physical filtration or biological filtration is missing.

4. Bactericidal drugs have been used, which affects the function of the allergic system.

How to use the filter:

Place the filter in the aquarium, attach it to one side with a suction cup, and turn on the switch to use it.

Precautions: 1. The filter can only be used according to the rated voltage and frequency indicated on the nameplate.

2. The filter should be maintained every once in a while. Before cleaning and maintenance, disconnect the power supply of the filter.

3. Make sure the wire plug is dry.

4. Do not unplug the power cord with wet hands.

5. The filter is only used in indoor aquariums.

6. The filter cannot be used when it is damaged.

7. Make sure that the filter works in the correct water level, and the filter cannot be used in the absence of water.

8. The filter cannot be dismantled or repaired without permission to avoid danger or damage to the body, and the filter maintenance should be carried out by professionals.

There are many kinds of filters, filtering solids, filtering liquids, filtering gases, and different types of filters have different functions.

Next, let's talk about the role of industrial filters that filter liquids.

The industrial filter is mainly used to filter the impurities in the electrolytic copper foil stabilization tank, and the impurity composition of the sewage here is relatively single, which is more suitable for the use of large-flow single-bag filters. The industrial filter has a high filtration accuracy, up to the highest level, which can meet the needs of chip electrolyte filtration.

According to the needs of actual production, the flange quick-opening stainless steel bag filter has reasonable overall structure, good sealing, strong circulation ability and easy operation, which can meet the filtration needs of various industrial water. The leakage probability of the filter bag is small, the filtration accuracy is high, and the inner and outer surfaces of the filter are solved by mechanical sandblasting and polishing, which is average and easy to clean. We know that the flange quick-opening stainless steel bag filter adopts the side-in and side-out mode, which has a large inlet and outflow water, high water yield and stable water quality.

It is mainly used in reverse osmosis, ultrafiltration and other membrane filtration equipment to filter the water that needs to enter the reverse osmosis membrane and ultrafiltration membrane to ensure that there will be no excessive substances blocking the reverse osmosis membrane and ultrafiltration membrane, and to protect the safety of reverse osmosis membrane and ultrafiltration membrane.

Nanofiltration (NF), ultrafiltration (UF), reverse osmosis (RO), electrodialysis (EDI) and other system security filtration and terminal filtration;

Filtration of pharmaceutical injections, large infusions, eye drops, Chinese herbal medicines, etc., extraction, purification and concentration of biological preparations;

pre-filtration and terminal filtration of high-purity water for electronics, microelectronics and semiconductor industries;

Oilfield reinjection water, boiler feed water, chemical reagents, liquid organic products, high-purity chemicals, pesticides, etc. filtration;

Filtration of drinking purified water, mineral water, fruit juice, tea drinks, and health drinks;

1.High filtration precision: Filter out all larger particles (>1-2 um)2High filtration efficiency: Reduces the number of particles passing through the filter.

3.Prevents early wear on the engine. Prevent damage to the air flow meter!

4.The low differential pressure ensures an optimal air/fuel ratio for the engine. Reduced filtration losses.

5.The filtration area is large, the ash holding capacity is high, and the service life is long. Reduce operating expenses.

6.Small installation space and compact structure.

7.The high wet stiffness prevents the filter element from suctioning and causing the filter element to be broken down.

8.Flame retardant. 9.Reliable sealing performance.

10.Good value for money.

11.Metal-free construction. It is environmentally friendly and reusable. Good for storage.

Try to use original oil filters or branded products.

First of all, the original oil filter element will be produced in accordance with the requirements of the main engine factory, including the size of the filter element, the cross-section of the filter paper, the special design inside and the maximum use time of the filter element, etc., so the original oil filter element can ensure the safe operation of the engine or the use of no hidden dangers.

The brand oil filter element will basically be produced in accordance with the original manufacturer's standards, but the difference is that the brand oil filter element will have the phenomenon of "one filter for multiple purposes". In fact, many oil filters have a common side to them. It's just that the process and technical standards of brand products are higher, so they can be accepted by the market.

In fact, when it comes to brand oil filter elements, there are some so-called original filter elements that are nothing more than OEM products given by factories of some brand products.

In addition to filtering the oil, another function of the oil filter is to assist in heat dissipation, especially some larger filters, which have a more obvious effect on the heat dissipation of the oil. Therefore, the original oil filter element will generally be considered according to the various working conditions of the engine, including the size design of the filter element. As a result, OEM filters are one of the most reliable engine protection devices.