Hydraulic air coolers AH1680T-AC220V

ZF hydraulic factory is located in shenzhen special zone, guangdong province, China, engaged in heat exchange equipment research, manufacturing, operating 16 years, set design, manufacturing, sales in one of the production enterprises. Production air cooler models include ah3818t-ac220v, ah2290t-ac220v, ah2413-ac220v, ah1680tl-ac220v, ah1680t-ac220v, ah1470t-ac220v, ah1490t-ac220v, ah1490tl-ac220v, ah1490tl-ac220v, Ah1417tl-ac220v, ah1417t-ac220v, ah1012t-ac220v, ah0608tl-ac220v, ah0607t-ac220v, af1025l-ac220v and other models. More air cooler products, please refer to the website wwww.hydraulicpressureswitch.net

 

ZF brand of ZF hydraulic air cooler is a well-known brand in the industry. The products are manufactured in strict accordance with national industrial standards (steel pressure vessel gb150-1998),(plate heat exchanger gb16409-1996), and all air coolers are guaranteed for one year.

ZF HYDRAULIC cooler fin type AH1680T servo lathe HYDRAULIC system manufacturers direct sales.

 





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How to improve the working pressure of external gear pump?

 

The key to improve the working pressure of gear pump is to effectively reduce the internal end leakage. The current method is to use the automatic compensation device of end clearance. The working principle is that the pressure oil of the oil chamber in the pump is directed to the outer side of the shaft sleeve or the side plate, so as to automatically compensate the end surface wear and reduce the end surface clearance. a typical structure with a floating bush. Shaft sleeve 1 and 2 are floating mounted, and the left cavity of the shaft sleeve is communicated with the oil pressure cavity of the pump. When the pump work, axle sleeve 1 and 2 by the left side of the action of the oil pressure and move to the right, the gear two side pressure, thus automatically compensate for the end face clearance. In this way, gear pump rated pressure up to 10 ~ 16MPa, volumetric efficiency is not less than 0.9. In order to improve the pressure and volume efficiency of the gear pump, high pressure of the gear pump, it is necessary to take measures from the structure, the end face clearance for automatic compensation. Usually the automatic compensation end face clearance device has: the floating axle sleeve type or the elastic side plate type two kinds. , the principle is the introduction of pressure oil to make the shaft sleeve or side plate close to the gear face, the higher the pressure, the smaller the clearance, can automatically compensate for the end wear and reduce the clearance. Gear pump floating shaft sleeve is floating installation, shaft sleeve outside of the cavity and the pump oil pressure cavity communication, when the pump work, floating shaft sleeve by the role of oil pressure and pressure to the gear face, the gear two side pressure, thus compensating for the end face clearance.

 

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The development direction

 

With the growth of the population in the economic development of energy issues are increasingly taken seriously, especially in our country, energy conservation is becoming more and more important. In order to strengthen the concept of energy saving to ensure that enterprises, China's production of electricity is likely to start a more severe price lever, therefore, energy saving has become an important direction of the current development of gear pump.

 

As a major variety of pumps, gear pumps have undergone many important changes. Early gear pump is full hydraulic, due to the need of environmental protection and energy saving, as well as the mature application of servo motor and the price of a substantial decline, in recent years, the full electric precision gear pump more and more, in order to analyze this development trend, I will compare the characteristics

 

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Maintenance work

 

Hydraulic oil maintenance work (the premise is the normal operation of the equipment, no abnormal conditions),

 

1. Ensure that the hydraulic oil is not used under high temperature; Oil soon oxidizes at high temperature.

 

2. The air filter on the hydraulic station should use a filter that can filter both particles and water.

 

3. Precision filter element is adopted to filter hydraulic oil, so that the pollution degree of oil products can be maintained in the NAS<8 level for a long time. Due to the

 

Is the dirty capacity limit of the hydraulic station is only 5um, and the accuracy of the filter element is usually greater than this size, the pollution level of the general hydraulic station is required to be controlled in the NAS less than 8 level; for

 

For servo devices, the requirements are higher, less than 7 levels. If you remove the servo valve, you will understand why hydraulic oil pollution should be controlled so high. The most

 

Buy a precision oil filter for online filtration, some filter element accuracy has reached 0.1um.

 

4. Centrifugal dewatering/vacuum dewatering (for wet stations).

 

As long as the control, such as general MOBIL, SHELL, etc., can be used for 5 years.

 

5. Check your oil regularly

 

Hydraulic oil is widely used and is the most widely used oil in industry. At present, the hydraulic components are developing towards the direction of small volume and large power

 

50 mpa. For this reason, the ordinary l-hl series has tended to be eliminated, and the wear-resistant l-hm series has more applications. Low temperature performance is also an important characteristic of hydraulic oil, required in low temperature environment

 

The equipment is easy to start, and the power transmission is sensitive, and the oil change cycle of the hydraulic oil is long, such as the open air equipment is usually changed once a year, the hydraulic oil in the use of the process is inevitable

 

Because of the change of four seasons, it is better to use low coagulation products in outdoor equipment. Cleanliness has also become the performance requirements of hydraulic oil, the general product to NAS particle level not greater than 9,

 

Cleaning products should be no more than grade 7, and high cleaning products should be no more than grade 5. However, blind pursuit of NAS grades will not only have no effect, but also reduce the quality and increase the cost. For example some machines

 

Equipment manufacturers, or construction machinery users do not have a clean workshop for adding hydraulic oil, even though they spend a lot of money to buy NAS 5 level products, in the moment of opening the product, high

 

The clean NAS 5 hydraulic oil becomes the NAS 8 grade, and the high NAS grade of hydraulic oil means more filtration, in which the expensive additive ingredients are filtered

 

Therefore, from a professional point of view, NAS grades need not be pursued too much.

 

Prevent air from entering the oil

 

The oil inlet of the oil pump shall be sealed reliably. The oil suction pipe in the oil tank shall not be too close to the oil surface. The highest point of the system shall be equipped with exhaust valve to release free air in the oil.

 

7. Reasonable design of fuel tank

 

The oil suction pipe should be far away from the oil return pipe, avoiding the use of lead, zinc, copper and other materials that play a catalytic role in the oxidation of oil. The oil tank should be coated with oil-resistant anti-rust paint, and the cooler in the oil tank should not leak