Hydraulic pump station plunger pump oiling device
By delivering hydraulic oil to the pump body cavity before starting the axial piston pump, the problem of slipper wear is solved, and volumetric efficiency and service life are improved.
Patent Information
- Application Number
- CN202520020529.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-06
AI Technical Summary
Axial piston pumps are prone to slipper wear during cold starts, which reduces volumetric efficiency and service life.
Before the plunger pump starts, hydraulic oil is delivered to the pump body cavity through the return oil pipe. The sliding shoe is lubricated by the cooperation of the electromagnetic reset directional valve and the check valve. After a delay, the electromagnetic reset directional valve is de-energized, the motor starts, and the hydraulic oil flows to the sliding shoe to reduce wear.
Reduce wear on the slippers, increase volumetric efficiency, and extend service life.
Smart Images
Figure CN223854570U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of hydraulic pump especially to the axial piston pump technical field, specifically refers to a kind of hydraulic pump station plunger pump oiling device. BACKGROUND
[0002] Axial piston pump is adopted by oil distribution plate oil distribution, cylinder body rotates, relies on the inclined disc type axial piston pump of variable head variable.The pump adopts the best oil film thickness design of hydraulic static balance, makes cylinder body and oil distribution plate, sliding shoe and variable head between pure liquid friction under operation, with simple structure, small volume, low noise, high efficiency, long life and has self-priming capacity and other advantages.Axial piston pump has multiple variable potential to meet the requirements of users, it is widely used in machine tool forging, metallurgy, engineering, mining, ship and other hydraulic transmission systems.
[0003] Axial piston variable displacement pump cold start, easy to make sliding shoe wear, thereby reducing volumetric efficiency, reducing service life. INVENTION CONTENTS
[0004] The utility model provides a kind of hydraulic pump station plunger pump oiling device in view of the deficiency of prior art, before plunger pump starts, oil is transported into the inner cavity of pump body by oil return pipe, to play the role of lubrication, to reduce sliding shoe wear, improve volumetric efficiency, prolong service life.
[0005] The utility model is realized through the following technical schemes, a kind of hydraulic pump station plunger pump oiling device, including the oil return pipe of connecting oil storage tank and plunger pump, electromagnetic reset reversing valve is equipped on the oil return pipe, electromagnetic reset reversing valve and oil storage tank are connected by first oil pipe, one-way valve between electromagnetic reset reversing valve and oil storage tank is also equipped on the oil return pipe, the one-way valve is connected in parallel with first oil pipe, the oil storage tank is located at the upper end of plunger pump.
[0006] The utility model in use, first in oil storage tank add certain amount of hydraulic oil, make electromagnetic reset reversing valve power reversing, when hydraulic oil flows into main pump inner cavity from oil storage tank by first oil pipe, electromagnetic reset reversing valve, oil return valve, after a certain time delay, electromagnetic reset reversing valve is de-energized reset, motor starts, part of hydraulic oil flows to oil storage tank by electromagnetic reset reversing valve and one-way valve, to make hydraulic oil flow to sliding shoe before cold start, to reduce sliding shoe wear, improve volumetric efficiency, prolong service life.
[0007] As preferred, circuit connected with electromagnetic reset reversing valve is also equipped with time relay.
[0008] The preferred scheme is automatically realized that electromagnetic reset reversing valve is de-energized reset after a certain time delay by the setting of time relay.
[0009] The first oil pipe and the oil return pipe are both communicated with a first oil port at the bottom end of the oil tank, and a second oil port is arranged at the upper end of the first oil port.
[0010] When the hydraulic oil in the oil tank is excessive, the liquid level in the oil tank rises, and the hydraulic oil returns to the oil inlet tank through the second oil pipe when the liquid level reaches the second oil port, so that the hydraulic oil is recycled.
[0011] Preferably, the oil inlet tank is arranged at the lower end of the oil tank.
[0012] The oil inlet tank is arranged at the lower end of the oil tank.
[0013] Preferably, the oil inlet pipe is further provided with a stop valve and a filter assembly.
[0014] The filter assembly is arranged on the oil inlet pipe.
[0015] Preferably, air filters are arranged on the oil inlet ports of the oil tank and the oil inlet tank.
[0016] The air filters are arranged on the oil inlet ports of the oil tank and the oil inlet tank.
[0017] The beneficial effects of the utility model are as follows: a certain amount of hydraulic oil is added into the oil tank, the electromagnetic reset reversing valve is powered to reverse, the hydraulic oil flows into the inner cavity of the main pump through the first oil pipe, the electromagnetic reset reversing valve and the oil return valve, the electromagnetic reset reversing valve is reset after a certain time delay, the motor is started, and part of the hydraulic oil flows to the oil tank through the electromagnetic reset reversing valve and the one-way valve, so that the hydraulic oil flows to the sliding shoe before cold start, the sliding shoe wear is reduced, the volume rate is improved, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The structure of the utility model is shown in the figure;
[0019] As shown in the figure:
[0020] 1, oil tank, 2, one-way valve, 3, first pipe section, 4, first oil pipe, 5, electromagnetic reset reversing valve, 6, second pipe section, 7, plunger pump, 8, motor, 9, oil inlet tank, 10, air filter, 11, second oil pipe, 12, second oil port. DETAILED DESCRIPTION
[0021] In order to clearly illustrate the technical features of the scheme, the scheme will be described below through specific embodiments.
[0022] Referring to the drawings Figure 1 The utility model discloses a hydraulic pump station plunger pump oil injection device, including the oil return pipe of connecting oil storage tank 1 and plunger pump, be equipped with electromagnetic reset reversing valve 5 on the oil return pipe, and electromagnetic reset reversing valve 5 and oil storage tank 1 are connected through first oil pipe 4, still be equipped with the check valve 2 between electromagnetic reset reversing valve 5 and oil storage tank 1 on the oil return pipe, check valve 2 is parallelly connected with first oil pipe 4, oil storage tank 1 is located the upper end of plunger pump.
[0023] Due to the setting of electromagnetic reset reversing valve 5, the oil return pipe is divided into the first pipe section 3 connected with oil storage tank 1 and the second pipe section 6 connected with plunger pump, the check valve 2 is equipped on the first pipe section 3, the first pipe section 3 and first oil pipe 4 are parallelly arranged, and the first pipe section 3 and first oil pipe 4 are all connected with the second pipe section 6 in series, the oil return port of plunger pump is connected with the P port of electromagnetic reset reversing valve 5, the A port of electromagnetic reset reversing valve 5 is connected with first oil pipe 4, and the B port of electromagnetic reset reversing valve 5 is connected with the first pipe section 3.
[0024] The circuit connected with electromagnetic reset reversing valve 5 is also equipped with time relay, and the circuit is connected on the control box, and the delay time of time relay is 10s.
[0025] The first oil pipe 4 and the oil return pipe are all communicated with the first oil port at the bottom end of oil storage tank 1, and the second oil port 12 located at the upper end of the first oil port is also formed in oil storage tank 1, the second oil port 12 is communicated with oil inlet tank 9 through second oil pipe 11, and the oil inlet tank 9 is communicated with the oil inlet pipe of plunger pump.
[0026] The oil inlet tank 9 is located at the lower end of oil storage tank 1, and the oil inlet pipe is also equipped with a stop valve and a filter assembly, and the stop valve and the filter assembly are all prior art.
[0027] The utility model in using, first in oil storage tank 1 add certain amount of hydraulic oil, when the control box start button electricity, control electromagnetic reset reversing valve 5 makes it reverse and keep electrified state, at this time, hydraulic oil flows into the main pump inner chamber from oil storage tank 1 through electromagnetic reset reversing valve 5, after 10 seconds delay, electromagnetic reset reversing valve 5 loses power and resets, and motor 8 starts, and hydraulic oil flows to oil storage tank 1 through electromagnetic reset reversing valve 5 and check valve 2, when the hydraulic oil in oil storage tank 1 also reaches the second oil port 12, hydraulic oil flows back to oil inlet tank 9, and the residual hydraulic oil in oil storage tank 1 is used for next start.
[0028] Of course, the above description is also not limited to the above examples, the technical features not described in the utility model can be realized by or using the prior art, which will not be repeated here; the above embodiments and drawings are only used to illustrate the technical scheme of the utility model and are not a limitation on the utility model, the utility model has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that the changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the utility model do not deviate from the purpose of the utility model, and should also belong to the protection scope of the claims of the utility model.
Claims
1. A hydraulic pump station plunger pump oiling device, comprising a return oil pipe connecting an oil storage tank (1) and a plunger pump, characterized in that: The oil return pipe is provided with an electromagnetic reset reversing valve (5), the electromagnetic reset reversing valve (5) is connected with the oil tank (1) through a first oil pipe (4), and a one-way valve (2) is further arranged between the electromagnetic reset reversing valve (5) and the oil tank (1) on the oil return pipe, the one-way valve (2) is arranged in parallel with the first oil pipe (4), and the oil tank (1) is located at the upper end of the plunger pump.
2. The hydraulic pump station plunger pump oiling device of claim 1, wherein: A time relay is further arranged on a circuit connected with the electromagnetic reset reversing valve (5).
3. The hydraulic pump station plunger pump oiling device of claim 1, wherein: The first oil pipe (4) and the oil return pipe are both communicated with a first oil port at the bottom end of the oil tank (1), a second oil port (12) is further arranged at the upper end of the first oil port on the oil tank (1), the second oil port (12) is communicated with an oil inlet tank (9) through a second oil pipe (11), and the oil inlet tank (9) is communicated with an oil inlet pipe of the plunger pump.
4. The hydraulic pump station plunger pump oiling device of claim 3, wherein: The oil inlet tank (9) is located at the lower end of the oil tank (1).
5. The hydraulic pump station plunger pump oiling device of claim 3, wherein: A stop valve and a filter assembly are further arranged on the oil inlet pipe.
6. The hydraulic pump station plunger pump oiling device of claim 3, wherein: Air filters (10) are arranged on the oil inlet of the oil tank (1) and the oil inlet of the oil inlet tank (9).