fuyangby@126.com
86 15188770013
fuyangby@126.com
86 15188770013
1、 The core functional characteristics of adjustable pressure limiting unloading valve
Wide range of adjustable pressure
Support flexible pressure adjustment within the range of 0.5-5.0 MPa, accurately matching the required pressure values according to different grouting engineering needs (such as dam reinforcement, tunnel filling, etc.), to meet diverse construction scenarios.
Overpressure automatic unloading protection
When the grouting pressure exceeds the set value, the unloading valve automatically opens to return the slurry to the storage tank, avoiding equipment damage, pipeline rupture, or engineering quality defects (such as cracks and leaks) caused by excessive pressure.
Integrated structural design
Integrated installation with the pump body, without the need for additional auxiliary devices, simplifies the operation process, reduces construction complexity and equipment maintenance costs.
2、 Engineering application advantages of adjustable pressure limiting unloading valve
Enhance construction safety
Through the pressure overload protection mechanism, mechanical failures and safety accidents caused by overpressure can be directly reduced, and the service life of pump bodies, pipelines, and motors can be extended, especially suitable for high-pressure grouting scenarios (such as deep tunnels and high consolidation engineering).
Ensure the stability of grouting quality
Constant pressure output avoids fluctuations in slurry flow rate, ensuring uniform filling of cracks or anchoring areas with materials such as cement slurry and mortar, and improving the consolidation strength and anti leakage performance of engineering structures.
Enhance device universality
Combined with the dual suction inlet design of the slurry pump (main suction inlet for mortar and auxiliary suction inlet for clean water), it can adapt to various processes such as single liquid injection and dual liquid injection, achieving "one machine for multiple uses" and reducing equipment procurement and switching costs.
3、 Comparative advantages with traditional unloading devices
Comparison dimension adjustable pressure limiting unloading valve traditional fixed pressure unloading valve
Pressure adaptability 0.5-5.0MPa continuously adjustable, suitable for multiple working conditions with fixed pressure values, only applicable to a single engineering scenario
Convenient on-site manual adjustment, no need to disassemble accessories or replace valve cores or springs, cumbersome operation
Safety redundancy design with automatic response to overpressure, no delay protection relying on manual monitoring, prone to accidents due to delayed response
4、 Value embodiment in typical application scenarios
Water conservancy engineering: In the grouting of cracks in the reservoir dam body, the diffusion range of the slurry is controlled by adjusting the pressure (such as 1.2-2.5MPa) to avoid secondary damage to the dam body.
Tunnel engineering: During high-pressure (3-5 MPa) grouting, the unloading valve can prevent pipeline overpressure and rupture, ensuring continuous grouting operations on the face of the tunnel.
Emergency rescue: In flood or landslide situations, quickly adjust the pressure to adapt to the grouting needs of loose soil layers and improve construction efficiency.
Through the above characteristics, the adjustable pressure limiting unloading valve not only optimizes the operating experience of the slurry pump, but also becomes a key technological innovation to ensure engineering quality and safety.
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