Tips For Using Vane Pumps In addition to the prevention of dry rotation and overload, the prevention of suction air and excessive suction vacuum, the main points of the management of the Vane Pumps should also pay attention to: 1. If the pump steering changes, the suction and discharge directions will also change. The vane pump has a prescribed steering, and no reverse is allowed. Because the rotor blade groove is inclined, the blade has a chamfer, the bottom of the blade communicates with the oil discharge cavity, the throttle groove on the oil distribution plate and the suction and discharge port are designed according to the predetermined steering. The reversible vane pump must be specially designed. 2. The oil distribution plate and the stator of the vane pump are correctly positioned with positioning pins. The blades, rotor and oil distribution plate must not be reversed. The suction area of ​​the inner surface of the stator is the most easily worn. The zone becomes the discharge zone and continues to be used. 3. Pay attention to the clean working surface when disassembling, and the oil should be filtered well when working. 4. If the gap of the blade in the blade groove is too large, the leakage will increase. If it is too small, the blade will not be able to expand and contract freely, which will cause malfunction. 5. The axial clearance of the vane pump has a great influence on ηv. 1) Small pump -0.015 ～ 0.03mm2) Medium pump-0.02 ～ 0.045mm6. The temperature and viscosity of the oil should generally not exceed 55 ° C, and the viscosity should be between 17 and 37 mm2 / s. If the viscosity is too large, oil absorption is difficult; if the viscosity is too small, leakage is serious. Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional vane pump manufacturer and vane pump supplier in China. Our company has a provincial high-tech enterprise R & D center. Our products are widely used in cutting, plastics, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. We have obtained ISO9001 international quality management system certification, and our products have won a good reputation in China with their stable and reliable quality, and they have been used in the 2010 Asian Games Torch Tower. Our products occupy most of the domestic market and are exported to Southeast Asia, Russia, Africa and other foreign markets. Welcome to consult and purchase: https://www.china-vanepump.com/

The Importance Of Oil For Hydraulic Pumps If the power component hydraulic pump is compared to the heart of hydraulic equipment, then the hydraulic oil is the blood of the entire system. It not only has a close relationship with the hydraulic pump, but also has a great impact on the entire hydraulic system and equipment. In the earliest hydraulic transmission systems, hydraulic pumps used water as a working medium. Due to the low water viscosity, lubrication performance, rusting metal, and easy evaporation, it severely restricted the development of hydraulic transmission. In 1906, people began to use spindle oil and turbine oil as working medium, and in the 1950s, special hydraulic oil and hydraulic rail oil were used. These oils are specifically blended with additives and have different properties such as anti-oxidation, defoaming, anti-climbing, and improved viscosity index. With the development of high-pressure, high-flow, low-noise, and long-life hydraulic pumps, anti-wear hydraulic oils appeared in the 1960s. Reasonable selection of hydraulic pump oil can not only give full play to the performance and efficiency of the equipment, prolong the service life of the hydraulic pump and the entire hydraulic pressure, but also save the maintenance cost of the hydraulic pump. At the same time, the oil change interval of the oil itself can be prolonged, thereby effectively purchasing funds for the oil. Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Hydraulic Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Follow us for more information about hydraulic pump products and technical information about hydraulic pumps: https://www.china-vanepump.com/

How To Use It Correctly: Hydraulic Pumps (1) Start of the hydraulic pump. Before the pump is started, check the oil quantity in the fuel tank according to the oil level indicator to avoid cavitation caused by suction: Check the oil temperature with an oil thermometer to avoid the pump starting below 0 ° C. When the oil temperature is below 10 ℃, pay attention to the hydraulic pump to run for more than 20 minutes at no load; the pump should be started electrically. In the jogging, the flow of the pump is judged from the change in the sound of the pump and the change in the pressure of the pressure gauge. If the pump is running for more than 1 minute under no-flow state, there is a risk of seizure. (2) During operation and stop. Check for pump operation. If the noise is large, the needle pendulum is large, and the oil temperature is too high, the pump may be severely worn; check to understand the operating efficiency of the pump. Compare the temperature of the pump 売 and the fuel tank. If the temperature difference between the two is higher than 5 ° C, the efficiency of the pump can be considered very low; check the oil leakage of the shaft and the connection, and pay special attention to leakage at high temperature and pressure. (3) Observe the indicated value of the vacuum gauge installed at the suction pipe of the pump. During normal operation, the value should be below 127mmHg. Otherwise, check the oil tank and working oil. Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Hydraulic Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Welcome to purchase: https://www.china-vanepump.com/

Oil Pumps Lubricates The Compressor Many compressors have oil pumps to provide mechanical lubrication. If the oil pressure drops due to a pump failure or oil shortage, the compressor will fail. Where the oil pump is used, there is a cutout that will stop the compressor when the oil pressure is insufficient. This takes the form of a differential pressure switch with a start-up time delay. Because the inlet of the oil pump is under oil pan (suction) pressure, the pressure gauge at the pump outlet will indicate the total pressure at that point above atmospheric pressure, which is the suction (gauge pressure) plus the pump head. Any true oil pump pressure sensing element must sense both the suction pressure and the pump outlet pressure and eliminate the difference. The oil pressure cutout is connected to both sides of the oil pump, and two internal bellows are opposed to measure the difference. Since oil pressure does not occur at startup, a time delay must be set to increase oil pressure. The timer can be thermal, mechanical or electronic. The operation of the oil outlet indicates an unsafe condition, and such control is performed by a manual reset switch. The contacts on the switch can be used to operate an alarm to warn of a fault. Several compressor manufacturers offer electronic oil protection systems that provide more functionality while retaining the option of manual reset. The Oil Pumps works by circulating oil under pressure to the engine's rotating bearings, sliding pistons and camshafts. Large-capacity fluid bearings can be used to help cool the engine. Zhejiang Yongling Hydraulic Machine Co , Ltd. is a professional China manufacturer and supplier of oil pumps. Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines and other fields. Welcome to purchase: https://www.china-vanepump.com/product/sqp-series-vane-pumps-with-lower-noise/sqp1-vane-oil-pump-with-lower-noise.html

Oxygen Mask Mould-About Medical Plastic Oxygen Mask Medical plastic oxygen masks are mainly used by medical service providers for oxygen therapy because they are disposable and therefore reduce cleaning costs and infection risks. Mask designs can determine the accuracy of oxygen delivered in many medical situations that require oxygen therapy. Indoor air naturally produces 21% of oxygen, a higher percentage is usually essential in medical treatment. These higher percentages of oxygen are classified as drugs, where too much oxygen can be harmful to a patient's health, leading to dependence on oxygen for a period of time, and in extreme cases, the patient becomes blind. For these reasons, oxygen therapy is closely monitored. The mask is lightweight and can be secured with an elastic headband or ear loops. They are transparent, allowing medical personnel to see the patient's face and reducing the claustrophobia feeling that some patients experience when wearing an oxygen mask. Most surgical patients wear an oxygen mask at some stage. They may wear a nasal catheter, but the oxygen delivered in this way is less accurate and the concentration is limited. Yuhuan Shengjiu Mould Co., Ltd. has many years of experience in mould design and production of Oxygen Mask Mould . We can provide higher engineering design and production efficiency. It is a professional oxygen mask mould manufacturer and oxygen mask supplier in China. Welcome to buy: https://www.medicalmould.net/product/

Routine Inspection Of Hydraulic Pumps: A Few Things 1. The hydraulic pump checks the internal leakage of the boom cylinder. The easiest way is to raise the boom to see if it can be significantly lowered calmly. If the drop is significant, check the oil cylinder of the device and replace the sealing ring if it is worn; 2. Check the control valve. First wash the safety valve and check whether the valve core is worn. If it is worn, it should be replaced. If there is no change after the safety valve device, check the valve valve for wear. The clearance is limited to 0.06mm, and the wear should be replaced if it is severely worn. 3. Measure the pressure of the hydraulic pump. If the pressure is too low, the scheduling is ended, and the pressure cannot be adjusted, which indicates that the hydraulic pump is severely worn. In the same ordinary terms, the reasons for the tension that constitutes the hydraulic pump boom cannot be lifted continuously are: a. The hydraulic pump is severely worn. Leakage inside the pump is serious during low-speed operation; pump pressure is slightly increased during high-speed operation, but because of pump wear and internal leakage, the volumetric efficiency is significantly lower and it is difficult to reach the rated pressure. The long-term work of the hydraulic pump has reduced the wear and tear, and the oil temperature has fallen, which constitutes the wear of the hydraulic components and the aging and damage of the seals, the loss of the sealing ability, the evolution of the hydraulic oil, and finally the error; b. The selection of hydraulic components is unreasonable. The specifications of the boom cylinder are 70/40 non-standard series, and the seals are also non-standard. The manufacturing cost is high and the seals are inconvenient to replace. The small cylinder diameter of the boom cylinder will surely make the system pressure high; c. The hydraulic pump system is unreasonable. The control valve is a single pump in series with the full hydraulic steering gear. The pressure setting pressure of the safety valve is 16MPa, and the rated working pressure of the hydraulic pump is 16MPa. The hydraulic pump often works under full load or long-term overload (high pressure), and the system has a hydraulic attack, the oil is not changed for a long time, the hydraulic oil is contaminated, the hydraulic pump wear is reduced, and even the hydraulic pump casing explodes. Class error). Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Hydraulic Pumps . Our products are widely used in cutting, plastic, forging, engineering, leather, pressure, metallurgy, agriculture, transportation machinery and machine tools, hydraulic stations, automatic production lines, etc. Welcome to purchase: https://www.china-vanepump.com/

How To Eliminate The Cause Of Hydraulic Pumps Failure Cause of failure 1 The oil pump is leaking, and the sealing ring is aging; Remedy: Replace the seal Cause 2: The end face of the oil pump or the end faces of the main and driven gear bushes are worn or scratched, and the unevenness of the end faces of the two bushes is extremely poor Remedy: Replace the worn gear oil pump or oil pump shaft sleeve. When the wear is slight, smooth the end surface on the flat plate. The allowable error of its unevenness is 0.03mm; the end face of the upper sleeve is lower than the pump body, and the upper plane (normal value is less than 2.5 ~ 2.6mm). Should be installed on the rear sleeve. Failure cause 3: internal leakage caused by incorrect assembly of internal parts of the hydraulic pump Remedy: The unloading piece and seal ring must be installed in the oil chamber so that the two shaft sleeves can maintain balance. The elasticity of the guide wire should be able to twist the upper and lower shaft sleeves toward the driven gear at the same time by a slight angle, so that the machining planes of the two shaft sleeves of the main and driven gears closely fit; the unloading groove on the shaft sleeve must be equipped with a low-pressure cavity. Side to eliminate the harmful dead volume when the gear meshes; before pressing into the self-tightening oil seal, it should be coated with a layer of lubricant. Point the oil blocking edge toward the front cover, and do not install it in reverse; before installing the pump cover, pour a small amount of hydraulic oil into the pump casing and turn the meshing gear by hand Cause 4: The hydraulic oil is too dirty Remedy: Clean the system and replace the hydraulic oil. Cause 5: The filter of the hydraulic pump is blocked by dirt and cannot function as oil filter Remedy: Remove dirt from the filter with clean cleaning oil. Cause 6: Insufficient oil level, suction position is too high, the suction pipe is exposed to the oil surface Remedy: Add oil to the oil level and lower the oil suction position. Zhejiang Yongling Hydraulic Machine Co , Ltd . is a professional China manufacturer and supplier of Hydraulic Pumps . Our hydraulic pump products have the advantages of high working pressure, high volumetric efficiency, and strong anti-pollution ability. The products are widely used in hydraulic systems of plastic machinery, leather machinery, pressure machinery, metallurgical machinery, forklifts and other industries, especially for energy-saving systems of servo inverter drives. Welcome to purchase: https://www.china-vanepump.com/