DRB-P Series Electric Lube Pumps and Units (40MPa)
I. Overview
The DRB-P series electric lubrication pump is suitable for centralized lubrication systems with high lubrication frequencies, long piping lengths, and dense lubrication points in single or double-line dry-thin oil systems, serving as a lubricating grease supply device. It can also be equipped with a mobile trolley, hose, grease gun, and cable to form a portable electric lubrication pump unit, ideal for single-machine equipment with low lubrication frequencies, few lubrication points, large oil supply volumes, and where centralized lubrication is not convenient.
This series of lubrication pumps is an electric high-pressure plunger type. The working pressure can be adjusted at will within the nominal pressure range, featuring dual overload protection. The oil storage tank is equipped with an automatic oil level alarm. If an electric control box is added, the lubrication pump can achieve full automatic control of a dual-line centralized lubrication system and monitor the system.
II. Technical Specifications
Use grease with a penetration not less than 220 (25°C, 150g) 1/10mm (NLGI 0#-3#) and a viscosity grade greater than N68.
Section 3: Model Description
Section 4: Model Description
V. Dimensions
(1)外形尺寸 of lubricating pump (2) Lube Unit with Small Cart - Dimensions
(3) Dual-pump with electric reversing valve lubrication unit external dimensions
Section 6: Working Principle
The reducer motor is mounted on the connecting flange of the pump unit, driving the slide arm to move linearly back and forth through a driven eccentric shaft, and rotating the spiral oil-pressing plate and scraper plate clockwise (this mechanism is not present when using lubricating oil), uniformly pressing the softened grease around the pump unit's suction port through agitation.
The pump housing contains two sets of pistons, each set consisting of one working piston and two control pistons. When the working piston in one set completes the suction process, the working piston in the other set pushes grease towards the outlet. As shown in the diagram, when the slider moves to the left, the upper set of pistons completes suction, while the lower set completes pressure, initiating a new working cycle. At this point, pistons 1 and 2 of the lower set move to the left; piston 2, under the force of the spring, reaches its limit position to close the outlet, while piston 1 continues to move to the left. This creates a vacuum between pistons 2 and 1, which increases as piston 1 moves left. When the slider reaches its limit position, piston 1 opens the suction port, and grease is drawn in. If the spring force is insufficient to push piston 2 to its limit position, rod 3 will be forced to push piston 2 to its limit position by the slider. Meanwhile, pistons 1, 2, and 3 of the upper set move to the left. Piston 1 closes the suction port first, and the grease drawn in moves to the left under the push of piston 1. When piston 2 opens the outlet, the movement of piston 2 and rod 3 stops. Piston 1 continues to move left, pushing grease out of the outlet. Piston 1 and 2 have reached their limit position, completing half a cycle. This cycle repeats indefinitely, with the two sets of pistons alternately pushing grease out of the outlet. The grease pushed out is then filtered through a filter on the pump's connecting flange before being supplied to the system.
Usage Instructions
1. This series of electric lubrication pumps should be installed in an environment that is suitable, with minimal dust, and easy to adjust, inspect, maintain, and clean as well as replenish lubricant.
2. The series of electric lubrication pumps should be positioned as centrally as possible within the system to minimize pipeline length, maintain the lowest pressure drop, and ensure the pump generates enough pressure to overcome the back pressure at the lubrication points.
3. The set pressure of the pressure regulating valve for the pump can be adjusted freely within the range of 0 to 40 MPa. It is not allowed to exceed the nominal pressure of the pump (40 MPa) during operation.
4. Regularly clean the filter mesh at the pump outlet filter to prevent clogging.
5. If a fault in the series causes the pressure to reach approximately 50MPa, the safety plate will burst. Investigate the cause and remove it before installing a new safety plate.
6. Refilling the lubricant into the storage tank must be done using the DJB-H1.6 electric refilling pump through the refilling port of the storage tank.
7. The thin-film type capacity indicator in the oil storage tank is only suitable for grease. When using lubricating oil as the medium, it must be replaced with a float type capacity indicator.
8. The electric reducer must be topped up with an appropriate amount of 3# molybdenum disulfide grease through the exhaust plug hole within the first two months of use. Subsequent top-ups should be done every four months.
9. This series of electric grease pumps is designed for indoor installation. When used outdoors or in harsh environments, protective measures must be taken.
Order Instructions
1. When ordering a portable electric lubrication pump unit, the length of the included hose and cable must be specified in the contract. If not specified, the standard supply will be a cable of 10 meters and a hose of 3 meters.
2. This series of electric grease pumps is compatible with the following three types of standard electric control boxes, which can be selected and ordered according to different control requirements.
2.1 GDK01 Model Unmonitored Electric Control Box
2.2 GDK02 Model with Monitoring Electric Control Box
2.3 GDK03 Model with Monitoring, Fully Automatic Control Electric Box
3. This series of electric lubrication pumps operates on short intervals. If customers require long-term continuous operation, please specify in the contract.
Supplied spare parts
1. 10 insurance plates (stored in the screw holes on the underside of the pump outlet)
2. Filter Screens - 2 Sets
