Place of Origin:
China
Brand Name:
HUATAO
Certification:
ISO9001
Model Number:
HT-Hydraulic Axial Piston Pump
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A horizontal piston pump is a hydraulic pump that has several pistons (usually 3 or 6) installed in parallel, and uses a crankshaft to directly push the piston to do reciprocating motion through a connecting rod slider or an eccentric shaft to achieve liquid suction and discharge. They also use valve-type flow distribution devices, and most of them are quantitative pumps. The emulsion pumps in the hydraulic support system of coal mines are generally horizontal piston pumps. The emulsion pump is used in the coal mining working face to provide emulsion for the hydraulic support. The working principle relies on the rotation of the crankshaft to drive the piston to do reciprocating motion to achieve liquid suction and discharge.
Piston pump advantage
The radial piston pump does not have an oil distribution plate, but is distributed by a special oil distribution shaft. The oil distribution shaft generates a large radial force due to the uneven pressure between the oil suction port and the oil pressure port. At the same time, due to the large radial size of this type of pump, the relative movement speed is large and the wear is also large. These are the disadvantages of the radial pump. However, since the plungers are placed radially, several more rows of plungers can be placed, so the number of plungers is large compared to the axial pump, and the flow rate is large. This is its advantage. Compared with gear pumps and vane pumps, the plunger pump has a simpler sealing surface shape because the plunger is cylindrical, which can reduce the fitting clearance and has the advantages of less oil leakage, high efficiency, and high pressure resistance.
| Parameter | Symbol | Numerical value |
| Oil supply pressure | Pd/MPa | 16, 25, 31.5, 60 |
| Radius of plunger distribution circle | R/mm | 58 |
| Inclination of the swashplate | yr | 18 |
| Plunger diameter | D/mm | 28 |
| Rotational speed | ng/r/min | 1,500 |
| Outer radius of sealing band | Rg/mm | 15 |
| Inner radius of sealing band | R,/mm | 13 |
| Sliding shoe quality | M/g | 38 |
| Coefficient of friction of contact surfaces | 0.1 | |
| Fixed damping hole radius | ro/mm | 0.75 |
| Fixed damping hole length | l/mm | 5.27 |
Purpose of plunger pump:
The plunger pump is a primary device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder to change the volume of the sealed working chamber to complete oil suction and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. It is widely used in high pressure, large flow and flow adjustment occasions, such as hydraulic presses, construction machinery and ships.
Features of plunger pump:
(1) The cooperative position of the plunger and the cylinder is easy to control, the sealing is good, and the volume slope is high 0.93-0.95.
(2) The sliding shoe and return plate are used to avoid the head contact of the ball head.
(3) High-pressure pump, complex structure, expensive price, high requirements for the application environment.
(4) The number of plungers is generally 7, 9, 11, odd number, to reduce pulsation.
(5) The displacement depends on the inclination angle γ of the pump.
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