在Hauhinco传统与创新是互不分离的。Hauhinco是1908年在德国斯普罗克霍威尔,鲁尔矿业的摇篮成立的。至今,Hauhinco仍旧牢记自己的由来。再过去的100余年间,公司经历了很多组织结构和市场环境的变化,并仍旧不断地推陈出新,为市场带来创新性的产品。这些经验使得Hauhinco在市场中独树一帜。
Hauhinco是一家拥有悠久历史的成功的中型公司。如今,Hauhinco是世界领先的水液压应用领域供应商。我们的高压柱塞泵,阀以及系统被广泛地应用于世界各地的井下煤矿以及工业领域。而我们的员工正是我们成功的关键。
The pump bypass valve (1), the pilot valve (4) and the connection plate (6) form a valve unit for controlling a pump in a pressure supply system. Depending on the system pressure, the valve controls the work cycle of the pump, „pressure build-up“, „load accumulator“ or „pressure less circulation“. The P port is connected to the pressure port of the pump, the A port to the pressure line of the system and the T port to the pressure less tank.
The fl ow of the pump enters the pump bypass valve at the P connection. The pump fl ow is connected to the pressure port of the pilot valve (4) via the filter (5). In the unload position, the pressure on the control piston (3) of the 2/2-way valve (2) on the control side is discharged, the 2/2-way valve is open, and the pump flow is discharged from P to T without pressure.
By switching over the pilot valve (4), the piston (3) is pressurized on the control side and the 2/2-way valve (2) closes and blocks the connection P to T. At the same time, the check valve (7) opens and connects the lines P to A. The pump flow is supplied via the A port, to the system.
General | |
Weight | see Order information |
Installation position | any |
Ambient temperature | -10 to 50°C (hydraulic fl uids, heed standard requirements) |
Material Valve parts Material Seals | Stainless steel NBR, PTFE, POM |
Hydraulic | |
Pumpenumlaufventil H30, H300 | |
Hydraulic pressure connector P, A, A1 | ≤ 420 bar |
Hydraulic pressure connector MP, MA | ≤ 420 bar |
Hydraulic pressure connector Y | ≤ 2 bar |
Hydraulic pressure connector | ≤ 2 bar |
Direction of flow | P→T, P→A |
Pressure fluid - Medium - Temperature range - Medium - Quality - min. filter fineness connection A, B - min. filter fineness connection X | Water, HFA 5 to 40°C see Hauhinco media requirement, water, HFA Filter fineness 100µm Filter fineness 25µm (control pcb with filter inserts) |
Pressure fluid - Medium - Temperature range - Medium - Quality | Mineral oil HLP according to DIN51624-2 5 to 50°C Cleanliness class -/19/16 according to ISO 4406 |
max. switching rate of the valve unit | 0,2 Hz |
Use of other pressure fl uids on request. | |
Note: The maximum decrease volume flow of the consumer and the size of the pressure accumulator control the switching rate of the pump circulation control system. |
The latest generation of Hauhinco pump circulation controls has a modular design and can be individually assembled as a construction kit.
See example drawing number 6602632, on the following page.
All other pump controls are available on request.