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DP22 medium and high pressure vane pump

Key words:Hydraulic tools

Category:

YB-D series medium and high pressure vane pumps

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Details

Specification

Sub-series	Model
DP 22	YB-D 12.5～25/12.5～25

Model Code

Installation and Use

1. During installation, the concentricity tolerance between the pump shaft and the motor shaft must be less than 0.10mm (TIR), and the maximum allowable angular error must be less than 0.2 degrees. When using a flexible coupling, the pump shaft must not bear radial and axial loads; the bracket must be strong and rigid, and able to fully absorb vibration.

2. During installation, it is recommended that the pump suction port be set to facilitate oil suction during startup.

3. Secure the pipelines, especially the inlet pipeline, according to the size of the diameter, and install a safety pressure relief valve in the system; the set pressure of the safety valve must not exceed the maximum pressure of the pump; the inlet pipeline must be strictly sealed to prevent oil leakage, and the return oil nozzle should be below the liquid level.

4. Before starting the pump, check the inlet, outlet, and rotation direction. When the pump is newly installed or has not been used for a long time, air should be released from the outlet.

And start the pump under no-load conditions as much as possible (preferably with the pump filled with oil).

5. When the pump is fixed above the oil level in the tank, the suction height should be less than 500mm, the inlet should be below the oil level in the tank, and the positive pressure at the inlet should be limited to within 0.03 MPa.

6. The oil should be kept clean; the pipelines and tank must be thoroughly cleaned. Install a filter with sufficient capacity at the pump inlet, 50mm away from the bottom of the tank, and a precision of 100μm is recommended. A precision filter with a precision of 25μm should be installed in the system. The cleanliness of the oil should be within NAS12.

7. The operating temperature of the oil should be controlled between 15℃ and 55℃. If the pump is started in cold weather, the oil should be heated, and the pump should be started under no-load conditions and run continuously under no-load conditions.

8. Pay attention to the viscosity and quality of the oil. It is recommended to use anti-wear hydraulic oil such as No. 32 oil at low temperatures.

9. After fixing the pump, manually rotate the pump shaft evenly and smoothly.

Installation Connection Dimensions

Sub-series

Φ90

DP22

259

122.5

168

110

-0.036

-0.071
Φ128

Φ20

-0.013

0
Φ11

NPT 1

NPT 3/4

72.5

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