Axial piston pump (English name: Piston pump) is the direction of reciprocation of the piston and the cylinder center axis parallel to the piston or plunger. Utilization and drive shaft parallel axial piston pump plunger volume change produced by reciprocating plunger bore in to work. Because of the plunger and the plunger hole is circular parts, the processing can be achieved with high accuracy, and therefore high volumetric efficiency. Direct axis swashplate piston swashplate piston shaft straight into the pressure oil-type and self-absorbing two. Pressure oil hydraulic pump are mostly used have pressure tank, rearward pressure hydraulic oil tank after each start the machine, such as hydraulic stains box must use air pressure to operate machinery. Such as insufficient air pressure on the hydraulic tank to start the machine, and slip inside the pump will cause whip pull off phenomenon, can cause abnormal wear of the pump body board and return the platen. Radial radial piston pump with flow valves can be divided with axial flow of two categories. Radial piston pump with flow valve malfunction rate, low efficiency shortcomings piston. 70,80 international development axis radial piston pump with flow valves to overcome the lack of radial piston pump with flow. Due to the characteristics of the radial pump structure, fixed axial flow of radial piston pump than the axial piston pump, impact resistance, long life, high control accuracy. Variable stroke is short variable pump plunger and the stopper at a variable piston effect, changes the stator eccentricity achieved, and set at the maximum eccentric distance is 5-9mm (depending on the size of the displacement), variable stroke is very short . And the high-pressure manipulated variable mechanism design, is controlled by the control valve. So fast response speed of the pump. Radial structure designed to overcome, such as axial piston pump shoe side wear problems. The ability to impact greatly. After the hydraulic pressure of the hydraulic piston by hydraulic oil tank after each start the machine, such as hydraulic stains box must use air pressure to operate machinery. Direct axis swashplate piston into two kinds of pressure from the sucking oil type. Pressure oil hydraulic pump powered by air pressure tank there, there are also pump up the oil itself with the cylinder to provide pressure oil pump inlet. Since the suction-type self-suction pump capable, without external oil. Edit this paragraph form structure in the form of axial piston pumps and piston pumps are divided into two kinds of typical radial piston structure; piston-cylinder radial piston pump piston are due to a new high-tech efficient pump, with the localization of accelerating, radial piston pump piston pump is bound to become an important part of the application areas; specific detailed radial piston Wikipedia, following only the axial piston pump, for example explained. Axial piston pump is the use of the drive shaft parallel to the volume change of the piston reciprocating plunger bore arising in to work. Because of the plunger and the plunger hole is circular parts, the processing can be achieved with high accuracy, and therefore has a high volumetric efficiency, smooth operation, flow uniformity, low noise, stress advantages, but the hydraulic oil more sensitive to pollution, the structure is more complex, higher cost. MCY14-1B: Quantitative piston SCY14-1B: manual variable piston pump YCY14-1B: pressure variable piston pump BCY14-1B: electro-hydraulic control piston PCY14-1B: constant variable piston pump piston pump pumping mechanism includes two precision coupling: plunger (plunger) + plunger sleeve (barrel) constitute Plunger (plunger and barrel assembly) (Figure 5-11), the oil valve (delivery valve) and oil Seat (delivery valve seat) constitute the oil valve dual pieces (delivery valve assembly plunger and plunger sleeve are a pair of precision coupling, paired after grinding are not interchangeable, requiring a high degree of precision and finish and good wear resistance , and its radial clearance of 0.002 ~ 0.003mm cut cylindrical surface of the plunger head has a chute, and through radial holes, communicating with the top of the axial hole, whose purpose is to change the amount of oil circulation; plunger sleeve system after the forward, back hole, were associated with the low pressure oil pump body cavity communicates plunger into the pump upper body suit, the application of positioning screw positioning plunger head chute different location, change the amount of oil by different methods. the oil and the oil valve seat is also a pair of precision coupling, paired after grinding are not interchangeable, with the gap of 0.01mm. the oil valve is a one-way valve, the spring pressure, the valve upper conical surface of the valve Block tight fit for its role in stopping when the upper end of the high-pressure tubing and the plunger cavity isolated, high-pressure tubing to prevent the oil from flowing into the fuel pump back within the lower part of the oil valve was cross sections, both driven, but also by diesel fuel. There cone outlet valve under a small cylindrical surface, known as the decompression zone, its role is at the end of oil, so that the high-pressure hydraulic tubing declined rapidly to avoid the spray holes produced drip phenomenon when the seat belts in the fall makes the top of the volume quickly increases, pressure decreases rapidly, Minting quickly when editing phase of this paragraph, a cam on the camshaft and injection pump plunger spring Under the action, forcing the plunger up and down to the piston reciprocating motion, thus completing the task of pumping, pumping process can be divided into the following three stages Conclusion: By the above discussion, the following conclusions ① total reciprocating plunger stroke L is constant, determined by the cam lift. ② plunger fuel supply cycle depends on the size of each stroke oil, oil from stroke is variable camshaft control. ③ start time does not vary with the oil supply Oil change itinerary changes. ④ rotating plunger end time can change the oil, thereby changing the amount of oil. Parker piston classification -PV032L1E1A1NECC3. Domestic Series Injection Pump Domestic Series Piston mainly A, B , P, Z and Ⅰ, Ⅱ, Ⅲ number series. series is based on a single-cylinder diesel engine power range of different requirements on the amount of oil to the piston stroke, the pump cylinder center distance and structural type of foundation, and then were accompanied different sizes of piston diameter, composed of several within one working cycle ranging from the fuel supply pump, in order to meet the needs of a variety of diesel engines. Domestic series fuel pump working principle and structure of the same type, A-type pump, for example to introduce the structure and working principle of plunger injection pump. Piston pump consists of four major components: cylinder, fuel adjustment mechanism, transmission and piston pump for domestic latest smart intelligent microprocessor control, LCD display, you can communicate with the computer, with a working pressure is stable, pulsation is small, easy to operate. Widely used in biochemical, pharmaceutical, chemical, environmental protection and other industries to meet industry needs more continuous constant voltage, constant current transmission fluid requirements. Parker piston Special Model: PARKER piston axial piston pump PV180R9K1AYNUPM PARKER proportion enlarge card PQDXXA-Z00 PARKER preload valve PVAPVV41N (model is PVAPVV41N20) PARKER PV270R1K1T1NUPM PARKER ratio of the axial piston pump high-pressure cylinder piston PV270R9K1T1NUPM PARKER PV046R1K1T1NMMC PARKER piston pump piston PV080R1K1AYNFRC PV016R1K1AYVMMC PV016R9K1T1NMMCK PV023R1K1T1NMM1 PV023R1K1T1NMR1 PV028R1K1JHNMMC PV040R1K8T1NMMC PV046R1K1T1NMF1 Parker piston axial piston pump Parker Parker variable piston PV046R1K1T1NMMC PV046R1K1T1NMRD PV046R1K1T1WMMC PV063R1K4T1NFHS PV140L1K1T1NMMC PV270R1K1T1NFWS PV016R1K1T1NMMC PV028R1K1JHNMMC PV028R1L1T1NMMC PV032R1K1T1NMMC PV046R1K1T1NMMC Parker Parker axial piston pump plunger Parker variable piston pump PAVC10032R426C222 PAVC10092L426B122 PAVC65R4S13 PAVC65R4SE13PISTON PAVC65L4C13 PAVC65L4H13 PAVC65BL4213PISTON PAVC65BL42A13 Parker piston axial piston pump Parker Parker variable piston PAVC659B2R4213PISTON PAVC38SR4HP16 PAVC38R4ME16PISTON PAVC38R4P16 PAVC3892R4C16 PAVC3898L42A16PISTON PAVC33SR4C26PISTON PAVC33SR4H26PISTON PV016L1K1T1NMFC PV016L1K1T1NMMC PV016R9L1T1V100K0041 PV020R1E1T1NMMC PV020R1K1A1NMMC PV023L1D1T1NMT1 PV023R1D1T1NGLC PV032L1E1A1NECC PV032R1D1CDNMR1 PV032R1K1BCNMMC PV040L1E1T1NKCC PV040L1K1T1NMMC PV040R1D3T1VUPG piston axial piston pump Parker Parker Parker variable piston PV040R1E1CDWUPR PV046R1D1B1NMCC PV080R1D3T1NFDS PV080R1K1T1NUPM PV092L1D1B1NFRC PV140L1D1T1NFHS Parker piston axial piston pump Parker Parker variable piston PV140L1D3T1NUPR PV140L1E1T1NFFP PV180L1E3T1VFFPX5899 PV180L1E3T1VFFP4311X5899 Parker Parker piston axial piston pump Parker variable displacement piston pump PV180L1E4T1NFFP PV180L1F3T1V001 PV180L1G1T1N2CC PV180L1G3T1NFWS PV180R1E4T1NFFP PV180R1E8T1NFPV PV180R9K1B1NZCC4342K0008 PV270R1E1B1NFRP PV270R1E1C1NTLB PV270R1K1A1NFT1 PV270R1K1B1NFR1 PV270R1K1C1N3CC PV270R1K8T1NFWS PV270R1L1A1NFRD PV270R1L1T1N2LB Parker piston axial piston pump Parker Parker variable piston PV270R9D1T1VFHSK0090 PV270R9D1T1VFHS4210K0090 PV270R9E1E1NFFPK0133 PV270R9L1C1N3CCK01334242 PARKER piston PAVC100R4222 PARKER piston PAVC10038R4222 PV020R1K1T1VFWS PV020R1K1T1V100 PV020R1K1T1NFPR PV020R1K1T1NCLC