2. The oil seal is flushed out (1) The gear pump is not rotating correctly. When the rotation direction of the pump is not correct, the high-pressure oil will directly pass to the oil seal. Since the low-pressure skeleton oil seal can only withstand a pressure of 0.5 MPa, the oil seal will be flushed out.
(2) The gear pump bearing is subjected to axial force. The axial force is often related to the over-tightening of the gear pump shaft extension end and the coupling sleeve, that is, the pump is hammered by a hammer or hardened by a mounting screw to receive a backward axial force when the pump is installed. This backward axial force will force the wear in the pump to increase as the shaft rotates. Since the gear pump is internally sealed by the gear end face and the end face of the bushing, when the axial sealing end face is seriously worn, the internal axial seal of the pump will generate a certain gap, resulting in communication between the high and low pressure oil chambers and the oil seal flushing. . This situation has appeared in the dump truck industry, mainly due to the irregular size of the coupling sleeve on the main engine.
(3) The gear pump is subjected to excessive radial force. If the coaxiality of the gear pump is not good, the radial force of the pump will exceed the bearing limit of the oil seal, which will cause the oil seal to leak oil. At the same time, it will also cause damage to the floating bearing inside the pump.
3. Can not establish pressure or pressure is not enough. This phenomenon is mostly related to the cleanliness of hydraulic oil. If the oil is not used correctly or the cleanliness of the oil in use does not meet the standard requirements, it will accelerate the internal wear of the pump, resulting in leakage. . Therefore, mineral hydraulic oil containing additives should be used to prevent oxidation and bubble generation. The viscosity standard of the oil is (16-80)×10-6m2/s. The filtration precision is: the input oil passage is less than 60цm. By observing the bushings and side plates of the faulty gear pump, it is found that if the cleanliness of all the oils will cause obvious groove marks on the surface of the friction pair, only the uniform surface marks will be generated on the sealing surface of the normally worn gear pump.
4. The flow rate is not up to standard (1) The oil inlet filter is too dirty and the oil absorption is insufficient.
(2) The installation height of the pump is higher than the self-priming height of the pump.
(3) The oil suction pipe of the gear pump is too fine to cause large oil absorption resistance. Generally, the large oil absorption flow rate of Zui is 0.5 to 1.5 m/s.
(4) Leakage of the suction port joint causes the oil pump to absorb insufficient oil. You can judge whether the system is leaking by observing whether there is air bubble in the fuel tank.
5. Gear pump burst aluminum alloy gear pump pressure capacity is 38 ~ 45MPa, under the premise of no manufacturing defects, the gear pump burst must be caused by the instantaneous high pressure.
(1) The oil pipeline is blocked by foreign matter, causing the pressure to rise indefinitely.
(2) The pressure of the safety valve is adjusted too high, or the opening and closing characteristics of the safety valve are poor, and the reaction is delayed, so that the gear pump is not protected.
(3) If the system uses multiple directional valves to control the direction, some multi-way valves may be negative openings, which will cause the gear pump to be damaged due to the dead point boost.
6. Fever (1) System overload, mainly in the pressure or speed is too high.
(2) The cleanliness of the oil is poor, the internal wear is intensified, the volumetric efficiency is lowered, and the oil leaks from the internal gap to generate heat.
(3) The oil discharge pipe is too thin, the oil flow rate is too high, and the general oil flow rate is 3-8 m/s.
Rhodiola extract is the root extract of Rhodiola, which is sweet and bitter. The main ingredients are salidroside, tyrosol and losevin, which have the effects of enhancing immune function, protecting cardiovascular and cerebrovascular system, anticancer and antidepressant. Rhodiola extract is a natural extract extracted from Rhodiola crenulata, which is refined, concentrated and dried. It is very soluble in water, methanol, ethanol and ether. It is stable to heat. Rhodiola mainly contains phenylpropanoids and flavonoids. Its unique active chemical constituents are phenylpropyl esters, rosavin (the most active), rosin, rosarin, rhodiolin, salidroside and its aglycone [1], namely p-tyrosol. Only Rhodiola rosea contains rosavin, rosin and rosarin.
Product Name: Rhodiola Rosea Extract
Other name : Rhodiola crenulata
Used Part: Root
Specification: 5%
Appearance: Red brown powder
Active Ingredient: Rosavin, salidroside
Test Method: HPLC
Extraction type: Liquid-Solid Extraction
Shelf life: 2 years
Rhodiola rosea is a remarkable herb that has a wide and varied history of uses. It is thought to strengthen the nervous system, fight depression, enhance immunity, elevate the capacity for exercise, enhance memory, aid weight reduction, increase sexual function and improve energy levels. It has long been known as a potent adaptogen. Adaptogens are substances that increase the body's overall resistance and help to normalise bodily functions.
1. Rhodiola Rosea P.e can be Anti-aging, anti-anoxia, anti-fatigue and anti-stimulus effect.
2. Rhodiola Rosea P.e is used as tonic and sexual elixir for both man and woman in china.
3. Rhodiola Rosea P.e Significantly allow for improvements in athletic performance.
4. Rhodiola Rosea P.e Effects from boosting immune function to enhancing memory to improving recovery from exercise.
5. Rhodiola Rosea P.e Reduce hyperglycemia visibly.
6. Rhodiola Rosea P.e can Be effective for improving mood and alleviating depression.
1.Rhodiola Rosea P.e is Applied in food fields, it is widely used as functional food additive;
2.Rhodiola Rosea P.e is Applied in health product field, it can be used as raw material in health food, the purpose is to enhance immunity and resist melancholy;
3.Rhodiola Rosea P.e is Applied in cosmetics fields, it is widely used to delay aging and compact skin;
4.Rhodiola Rosea P.e is Applied in pharmaceutical field, it is widely used to treat cardio-cerebrovascular disease.
Why choose us?
Product Recommended
Wolfberry Extract,Ginkgo Biloba Extract,Rhodiola Rosea Extract,Ginseng Extract
Xi'an Tian Guangyuan Biotech Co., Ltd. , https://www.tgybiotech.com