PCB plug hole machine vacuum pump maintenance Hanzhong screw pump repair

PCB plug hole machine vacuum pump maintenance Hanzhong screw pump repairThe maintenance content

a. Minor repair project

(a) Check the leakage of the shaft seal, adjust the gap between the gland and the shaft, replace the packing or repair the mechanical seal.

(b) Check the bearings.

(c) Check the tightening of bolts in each part.

(d) Eliminate defects such as running, leaking, dripping, and leaking in the operation of cooling water, sealing oil, and lubrication systems.

(e) Check the coupling and alignment.

The screw pump consists of two main parts: first, the ground drive device, which can be directly connected to the flange surface of the wellhead four-way, mainly composed of an electric motor, a V-belt, a gear set, an anti reverse device, a smooth rod clamp, a sucker rod packing box, etc; 2、 Single screw oil pump: It mainly consists of stator, rotor, limit joint, etc. The stator is made of high-quality steel shell with injected rubber, and the rubber sleeve has a double or multiple spiral surface; The rotor is a single or multi head spiral surface made of high-strength steel, which is hard chrome plated and meshes with the inner surface of the stator rubber to form a sealed cavity. The stator goes down the well with the oil pipe and is anchored, and the rotor is connected to the sucker rod.

PCB plug hole machine vacuum pump maintenance Hanzhong screw pump repairDismantling and Inspection

When disassembling the screw pump, the following steps should be followed.

① Check the power supply of the electric motor; The power supply should be disconnected and the power switch should be locked. Check the closure status of the population valve. If it is not closed, it should be tightly closed.

② Loosen the connecting bolts between the motor and the pump shaft, and remove the coupling.

③ Disassemble and inspect the synchronous gear.

For single screw or triple screw pumps, remove the pump rear cover and inspect the gasket, thrust gasket, bearings, and axial positioning plug.

For twin-screw pumps, remove the pump rear cover and inspect the bearings and seals.

④ Remove the front end cover and inspect the main and driven screws and seals.

⑤ If necessary, replace the gasket between the end cap and the pump body.