CN-224221599-U - Hydrodynamic cavitation spray head and spray cleaning system

CN224221599UCN 224221599 UCN224221599 UCN 224221599UCN-224221599-U

Abstract

The utility model discloses a hydrodynamic cavitation spray head and a spray cleaning system, and relates to the field of hydrodynamic cavitation for cleaning and degreasing. The hydrodynamic cavitation spray head comprises a first cavitation generator and a spray head, wherein the first cavitation generator comprises a vortex cavity, a liquid inlet pipe and a liquid outlet pipe, the vortex cavity comprises a top surface, a wall surface and a bottom surface, the bottom surface and the wall surface form an included angle of 120-180 degrees, the liquid inlet pipe is obliquely arranged in the vortex cavity and communicated with the vortex cavity, the included angle between the central axis of the liquid inlet pipe and the central axis of the vortex cavity is 45-90 degrees, the liquid outlet pipe is inserted into the vortex cavity, the liquid outlet pipe comprises an inner diameter shrinkage section, an inner diameter diffusion section and an inner diameter invariable section along the liquid outlet direction, one end of the spray head is provided with a nozzle, and the other end of the spray head is detachably connected with the liquid outlet pipe. The spray cleaning system comprises a hydrodynamic cavitation spray head and a cleaning tank, wherein a storage rack is arranged in the cleaning tank, the storage rack adopts a hollow structure, a liquid filtering layer is arranged below the storage rack, and the hydrodynamic cavitation spray head is arranged above or on the side face of the cleaning tank. The utility model provides the hydrodynamic cavitation spray head and the cavitation spray cleaning system, which greatly improve the cleaning capability, have low energy consumption and reduce the discharge amount of cleaning wastewater.

Inventors

CHEN YINGBIN
Tu Manyan
FAN JIAQI
WANG CHENJIE
WEN LUHONG

Assignees

杭州路弘科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250515

Claims (9)

1. The utility model provides a hydrodynamic cavitation shower nozzle, its characterized in that includes first cavitation generator and shower nozzle, first cavitation generator includes: The vortex cavity comprises a top surface, a wall surface and a bottom surface, wherein the bottom surface and the wall surface form a wall surface included angle, and the wall surface included angle is 120-180 degrees; the liquid inlet pipe is obliquely arranged in the vortex cavity and communicated with the vortex cavity, and the included angle between the central axis of the liquid inlet pipe and the central axis of the vortex cavity is 45-90 degrees; The liquid outlet pipe is inserted into the vortex cavity and comprises an inner diameter shrinkage section, an inner diameter diffusion section and an inner diameter unchanged section along the liquid outlet direction; One end of the spray head is provided with a spray nozzle, and the other end of the spray head is detachably connected with the liquid outlet pipe.
2. The hydrodynamic cavitation spray head of claim 1, wherein the liquid outlet pipe is provided with a section with a larger inner diameter, the outlet of the section with a threaded connection hole, and the spray head is provided with external threads matched with the threaded connection hole.
3. A spray cleaning system is characterized by comprising the hydrodynamic cavitation spray head according to claim 1, and further comprising a cleaning tank, wherein a storage rack is arranged in the cleaning tank, the storage rack adopts a hollowed-out structure, a liquid storage layer is arranged below the storage rack, and the hydrodynamic cavitation spray head is arranged above or on the side face of the cleaning tank.
4. A spray cleaning system according to claim 3, wherein the reservoir is connected to a demulsification tank, the demulsification tank is connected to a hydrodynamic cavitation module, and the hydrodynamic cavitation module comprises a second high-pressure pump and a second cavitation generator connected in sequence.
5. The spray cleaning system of claim 4, wherein the demulsification tank is further provided with a clean water inlet and a cleaning agent inlet, and wherein the demulsification tank is provided with an overflow baffle separating the demulsification tank from the oil sump.
6. The spray cleaning system of claim 4, wherein the demulsification tank is connected with the hydrodynamic cavitation spray head, and a precision filter and a first high-pressure pump are connected between the demulsification tank and the hydrodynamic cavitation spray head.
7. The spray cleaning system of claim 4, further comprising a standing tank, wherein the demulsification tank is connected to the standing tank, wherein a floating liquid suction port is formed in a liquid surface of the standing tank, and wherein the floating liquid suction port is connected to the floating oil separation device.
8. The spray cleaning system of claim 4, wherein the second high pressure pump is connected to the demulsification tank, the liquid outlet pipe of the second cavitation generator is connected to the demulsification tank and the standing tank through valves, respectively, and the standing tank is connected to a hydrodynamic cavitation spray head.
9. The spray cleaning system of claim 4, wherein a liquid inlet pump and a pre-filter are connected between the liquid storage layer and the demulsification tank.

Description

Hydrodynamic cavitation spray head and spray cleaning system Technical Field The utility model relates to the field of cleaning of oil-containing workpieces, in particular to the field of hydrodynamic cavitation for cleaning and degreasing. Background In the manufacturing industry, rolled steel plates, metal parts and the like need to be cleaned before assembly and packaging, and the cleaning objects mainly comprise residual cooling liquid, oil seal oil for sealing and metal chips and metal foam generated in the processing process. The cleaning aims to remove pollutants on the surface of a part in a specified time, equipment and a cleaning medium on the premise of not damaging the surface of the metal, and the cleaning is also an important process of pretreatment of the processes such as paint, electroplating, heat treatment and the like, and the cleaning quality directly influences the processing performance and the overall performance of mechanical products. The cleaning process generally comprises the processes of chemical cleaning, primary washing, acid cleaning, secondary washing and the like. Among them, chemical cleaning and primary water cleaning are intended to clean grease on steel plates and parts, and alkaline cleaning agents are generally used for the chemical cleaning. In this step, the conventional method adopts a soaking or water jet mode, and the method has low cleaning efficiency, large cleaning agent consumption and larger corresponding wastewater discharge amount. Ultrasonic cleaning has been studied for use in cleaning lines in order to reduce the amount of cleaning agent and water used. The ultrasonic cleaning is a cavitation phenomenon generated by the action of 20-30 kHz frequency in water, so that particles in a liquid medium are subjected to strong motion, strong impact action is generated among the liquid particles, pollutants on the surface of a workpiece are impacted, and the pollutants adsorbed on an object are separated and dispersed into the liquid. Meanwhile, due to the strong movement among particles, two immiscible liquids (such as water and oil) are emulsified, so that the dissolution of pollutants can be accelerated. Therefore, the ultrasonic cleaning can also enhance the cleaning effect of the cleaning agent. However, ultrasonic cavitation is only generated near an ultrasonic probe, the generation amount of ultrasonic cavitation is limited, the energy utilization rate is low, the energy conversion efficiency is only 5-10%, and the rest 90-95% is dissipated in a heat energy form, so that the ultrasonic cavitation becomes the biggest limitation for limiting the large-scale industrial application of the ultrasonic cavitation. At present, air floatation degreasing and membrane separation technology represented by ultrafiltration are commonly adopted for the treatment of steel rolling cleaning water. The two treatment methods are both required to add corresponding water treatment agents such as demulsifiers, flocculating agents and the like, the addition of the agents causes that the separated cleaning liquid cannot be recycled, the treatment cost is high, the treatment is carried out by adopting a filtering oiling water separation mode, the common oil-water separation can only remove floating oil on the surface of the cleaning water, the emulsified oil and the oil-in-water in the liquid cannot be removed, the impurity oil cannot be removed cleanly, and the cleaning liquid cannot be recycled. Disclosure of Invention In order to solve the problem of cleaning the existing oil-containing workpiece, the utility model provides the hydrodynamic cavitation spray head and the cavitation spray cleaning system, which greatly improve the cleaning capability, have low energy consumption, can recycle the cleaning liquid and reduce the discharge amount of the cleaning wastewater. Based on the technical problems, the technical scheme of the utility model is as follows: a hydrodynamic cavitation spray head comprising a first cavitation generator and a spray head, the first cavitation generator comprising: The vortex cavity comprises a top surface, a wall surface and a bottom surface, wherein the bottom surface and the wall surface form a wall surface included angle, and the wall surface included angle is 120-180 degrees; the liquid inlet pipe is obliquely arranged in the vortex cavity and communicated with the vortex cavity, and the included angle between the central axis of the liquid inlet pipe and the central axis of the vortex cavity is 45-90 degrees; The liquid outlet pipe is inserted into the vortex cavity and comprises an inner diameter shrinkage section, an inner diameter diffusion section and an inner diameter unchanged section along the liquid outlet direction; One end of the spray head is provided with a spray nozzle, and the other end of the spray head is detachably connected with the liquid outlet pipe. Preferably, the liquid outlet pipe is provided with an inner diameter-varia