Manufacture of gear pump, gear motor, orbital motor and valves.
The application basis and prospect of the cartridge valve in hydraulic system of electro-hydraulic control support are discussed. The design scheme is proposed and the working principle is analyzed. That the cartridge valve flow capacity, fast response, the use of electro-hydraulic pilot control, especially suitable for the type of stent conditions, in line with technological trends, it is worth promoting. Keywords: Cartridge valve; Electro-hydraulic control; Bracket; Hydraulic system 1....
Cause Analysis of Common Faults of Gear Pump Users 1, the shaft power increased dramatically Cause: The discharge line is clogged; Serious friction between gear and pump; Medium viscosity is too high 2, pump noise or vibration abnormalities Reason: pump and motor are not the heart; gears and pumps do not have the same heart or gap; the pump has gas; the installation height is too large, the pump produces cavitation 3, the pump does not absorb oil Cause: Suction management blockage or air leaks;...
Hydraulic support is a supporting device in coal mining machinery. After overhauling it, it can be used for five years underground. However, the service life of various hydraulic valves in hydraulic support is very low. For a long period of 3 months and a short period of only a few weeks, Foreign solutions and ways to increase the filtration system to improve the quality and improve the quality of the emulsion, but with little success. To a British hydraulic valve, for example, although the...
Principle and construction of hydraulic control valve The hydraulic control valve is a valve that is opened, closed and regulated by the pressure of the pipeline medium. It consists of a main valve and attached conduits, needle valves, ball valves and pressure gauges. It can be evolved into a remote control float valve, pressure reducing valve, slow-closing check valve, flow controller depending on the purpose of use and functional location. , pressure relief valve, hydraulic electric control...
The hydraulic valve block can be divided into strip blocks, small plates, cover plates and splints according to the structure. The hydraulic valve block can be divided into valve installation bottom plate, pump valve block, logic valve block, superimposed valve block, special valve block, collecting tube and connecting block according to the application. The hydraulic valve block in the actual hydraulic system is composed of the valve block body and various hydraulic valves, pipe joints,...
The failure cause analysis of the hydraulic valve cannot be simply equated with the failure reason analysis of the general hydraulic valve. It cannot be simply equated with the failure cause analysis of the general mechanical parts, and it also has the factors belonging to the hydraulic components themselves. First, analyze the causes of mechanical failure: 1, wear and tear The movement of the mechanical parts such as the hydraulic valve core, the valve sleeve and the valve body constantly...
The cleaning of hydraulic valve components is a key auxiliary process in the production of hydraulic components, and its quality restricts the reliability and stability of hydraulic valves. The quality of cleaning has a great relationship with the cleaning method, the preparation of the cleaning solution, the cleaning equipment and the responsibility of the personnel. Let's take a look at the Dalan hydraulic system manufacturer to talk about the cleaning of the valve body and the cleaning of...
First, what is the phenomenon of hydraulic pump trapping oil? The closed working volume of the hydraulic pump forms a closed volume during the transfer to the pressure chamber after the oil is filled. If the size of the closed volume changes, when the dead volume changes from large to small, the oil in it is squeezed, the pressure rises sharply, the bearing is subjected to periodic pressure shock, and the oil is heated; When the volume is changed from small to large, vacuum is generated due to...
Probably introduce: The hydraulic control valve is a valve that is opened, closed and adjusted by the pressure of the pipeline medium. It consists of a main valve and attached conduits, needle valves, ball valves and pressure gauges. It can be evolved into 100X, 200X, 300X, 400X, 500X, 600X, 700X, 800X, 900X, etc. depending on the purpose of use and functional location. . There are many types of pilot valves that can be used with a single pilot valve or a combination of two pilot valves. The...
Cleaning is an important part of the repair work, and the quality of the cleaning has a great influence on the quality of the repair of the machine. Accurate cleaning of centrifugal pumps to improve cleaning quality and reduce costs is one of the issues that repair workers must consider. Cleaning in repair work, including mechanical external cleaning and parts cleaning, and parts cleaning, can be divided into pre-identification cleaning, pre-assembly cleaning, and part plating or pre-bonding...
Due to the structural limitations of the fixed displacement, it is generally considered that the gear pump can only be used as a constant flow hydraulic source. However, the accessory-in-threaded combination valve solution is effective for improving its function, reducing system cost, and improving system reliability. Therefore, the performance of the gear pump can be close to the expensive and complicated plunger pump. For example, installing a control valve directly on the pump eliminates the...
With the hydraulic valve extended use of time, failure or failure is inevitable. Hydraulic valve failure or failure is mainly due to wear and tear caused by cavitation and other factors with the gap is too large, hydraulic valve leakage and hydraulic fluid caused by the deposition of hydraulic valve spool malfunction or clamping due. When the hydraulic valve failure or failure, most companies use the replacement of new components to restore the hydraulic system functions, the failure of the...
The hydraulic valve is an automation component operated with pressure oil. It is controlled by the pressure oil of the pressure distribution valve and is usually used in combination with an electromagnetic pressure distribution valve. It can be used to remotely control the on-off of oil, gas and water piping systems in hydropower stations. Commonly used for clamping, control, lubrication and other oil. There are direct-acting and pilot-type points, and many use pilot type. Hydraulic valve...
The filter must be installed in front of the hydraulic control valve and it should be easy to drain the water. Hydraulic control valve is a self-lubricating water valve body, without additional oil lubrication, in case of damage to the main valve components, according to the following instructions for disassembly. (Note: the general consumption of damage within the valve products for the diaphragm and ○ ring, other internal parts little damage) 1. The main hydraulic control valve before and...
Gear oil pump gear installed by the demolition of complex, the first move the claw coupling and the claw coupling teeth fixed teeth in the all-toothed position, and then the two fixing bolts in the positioning plate but not unscrew Insert the dowel pin on the engagement lever assembly into the hole on the rear side of the positioning plate (on the side of the gear pump). If the long slot on the positioning plate has reached the limit, the positioning pin still can not be inserted into the hole,...
The most basic form of the gear pump is that two identically sized gears mesh with each other in a tightly fitting housing. The interior of the gear pump housing resembles an "8" shape. The two gears are mounted on the outer diameter of the inner gear and on both sides and the shell. Close cooperation. The most basic form of the gear pump is that two identically sized gears mesh with each other in a tightly fitting housing. The interior of the gear pump housing resembles an "8" shape. The two...
The main difference between high-pressure arc gear pump and atmospheric arc gear pump is: First, high-pressure arc gear pump made of hard alloy material after high frequency processing, gear wear than ordinary arc gear hardness Good sex. The conventional circular gear pump gear all 40Cr nitriding, and even limited small manufacturers use 45 # steel quenching and tempering for arc gear pump gear. Second, the high pressure arc gear pump body is made of forged steel castings. Gear pump pump body...
The difference between the gear pump and the general gear pump Can briefly introduce gear pump pumps are generally low pressure gear pump, flow from small to large gear pump, and general gear pumps, such as Taizhou gear pump, Fuxin gear Pump, most of the applications on the machine or other equipment on the package, small size, small flow and so on. These are the simple differences between gear pumps and gear pumps.
Although the working principle is the same, and the efficiency of work is similar, but the material between the two is a vastly different, so they are used in different working conditions are also different , The following on the difference between the two introduced. Stainless steel gear pump and the difference between the ordinary gear pump Where stainless steel gear pump body, bearing, gear and other 304 stainless steel castings, gears made of high quality stainless steel, but also according...
Hydraulic control valve is a water pressure control valve, hydraulic control valve consists of a main valve and its attached conduit? Pilot valve? Needle valve? Ball valve and pressure gauge and other components. According to the purpose of use? Function and place can be evolved into a remote control float valve? Pressure relief valve? Slow closing check valve? Flow control valve? Relief valve? Hydraulic electric control valve, pump control valve. The filter must be installed in front of the...
Gear pump how to maintain, let it live longer? Gear pump is to use two gears to interoperate to work, less demanding on the media. General pressure below 6MPa, larger flow. Next Xiaobian introduce you to extend the service life of gear pump 5 methods. 1, often fat, electric drum pumps for high-speed operation, easy to volatile grease, it must be maintained at the bearing lubrication, and pay attention to Tim. 2, pay attention to save the electric pump should be placed in dry, clean and...
1, the external gear pump flow displacement: V = πDhB = 2πm2zB In fact, the volume between the tooth space slightly larger than the tooth size, so usually take 3.33, then there: V = 6.66zm2B flow: q = Vnηv = 6.66 zm2Bnηv The above calculation is the average external gear pump flow. Features: 1) The average flow of the gear pump is proportional to the number of teeth, and proportional to the square of the modulus. 2) The flow of gear pump is proportional to tooth width, but the increase of tooth...
Internal gear pump with involute gear pump and cycloid gear pump two. Cycloid gear pump, also known as the rotor pump, the two gears differ by a tooth. Internal gear pump is characterized by: small size, light weight, simple structure, easy manufacture, low price, reliable, self-priming performance is good, not sensitive to oil pollution, easy maintenance. The disadvantage is: large flow and pressure pulsation, noise, displacement and other variables. The characteristics of external gear pump:...
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