2019年10月29日星期二

Hydraulic pump fault analysis and solution

With the rapid development of economy and technology in our country, there is an increasing demand for such products as hydraulic pumps in production. However, in normal use, such products inevitably have problems. However, after years of development, our predecessors have summed up a good experience. In actual production and use, the user can solve the problem according to these situations. Then the hydraulic pump will appear what problems, how to solve this problem. Hydraulic pump failure analysis and solutions 1, failure analysis: hydraulic oil tank surface is too low; solution: add hydraulic oil; 2, failure analysis: no seasonal use of hydraulic oil; solution: usually apply 46 # hydraulic oil #) No special replacement, the winter cold north when considering the use of 32 # 3, failure analysis: the inlet pipe was seriously blocked by dirt; solution: remove the foreign body tube 4, the cause of the malfunction: oil pump gear seal damage, the air into the hydraulic System; Solution: replace the aging or damaged oil seal, O-ring; 5, Failure Analysis: Oil pump inlet and outlet joints or bent joints "O" ring damage, bending joints or bolt into or out Tubing nut is not tight, the air into the hydraulic system; solution: replace the O-ring, tighten the joint bolt or nut Fault reason: the above 5:00 is the normal use of the more prone to problems, but in actual use, There may be other situations, the user can take the appropriate measures according to the actual situation. A class of products can not be used plain sailing, they are just like children, if you can get more attention and attention, it is bound to play to its full potential. As China's demand for such products continues to increase, the future of hydraulic pumps faces great challenges and hopes.

Epichlorohydrin, 3-Chloro-1, 2 - epoxypropene, chloropropylene oxide ,ECH .

Molecular Formula: CH2OCHCH2Cl, C3H5OCl

Properties: It is a volatile, unstable colorless liquid with irritating odor similar to chloroform and ether. Molecular weight is 92.85, density, 1.1806g/cm3, boiling point, 116.11°C, freezing point, -57.2°C, refractive index (nd20), 1.4382, flash point (open cup), 40.6°C, and ignition point, 415°C. It is slightly soluble in water, miscible with many organic solvents, and able to generate azeotrope with a variety of organic liquids.

Main Applications:
Epichlorohydrin is an important organic industrial chemical and a chlorine-consuming product in fine chemicals, mainly for producing epoxy resin, synthetic glycerin, epichlorohydrin rubber, nitroglycerine explosives, glass fiber reinforced plastics, and electrical insulation products, which are widely used in the chemical industry, light industry, transportation, medicine, electronics and other fields. It also can be used as solvent for cellulose ester, resin, and cellulose ether, and the raw material of plasticizer, stabilizer, surfactant, and chloroprene rubber.

Toxicity and Protection: It is highly toxic, absorbed through the skin, and irritating to skin and mucous membranes. In higher concentrations, it has the function of narcotism. When poisoning occurs, there will be eye irritation, conjunctivitis, rhinitis, lacrimation, cough, fatigue, gastrointestinal disorders, nausea and other symptoms. Serious poisoning may lead to anesthesia or even lung, liver or kidney damages. Lethal concentration of human beings is 20ppm. Lethal dose of rat is 5090mg/kg. The maximum allowable concentration in air is 5ppm (18mg/m3). Production equipment needs to be closed, air, circulating, and the operator, wear protective equipment. In addition, due to intense auto polymerization, epichlorohydrin can not be heated in the fire in case of container burst. As for reaction as reagent, it is appropriate to be diluted with inert solvent and slowly added.

Packaging, Storage and Transport:
As ferric chloride or stannic chloride can promote auto polymerization, epichlorohydrin should be stored in dry, clean iron barrel, 200kg each, and kept in a cool, ventilated, and dry place, away from fire and heat. Store and transport in accordance with the provisions of flammable toxic substances.

EPICHLOROHYDRIN SPECIFICATION DATA SHEET

ITEMS

GUARANTEED SPEC

PURITY% (m/m)≥

99.9

DENSITY g/cm3

1.180-1.183

COLOR(pt-co)≤

10

MOISTURE%(m/m)≤

0.05


Epichlorohydrin

Epichlorohydrin (ECH)

Epichlorohydrin (Ech),Epichlorohydrin 106-89-8,99.9% Epichlorohydrin,High Quality Epichlorohydrin

Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com

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