Conical Sandblasting Spray Head for Uniform High-Impact Ejection
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Solution Overview
Problem
Existing sandblasting devices for automobile parts suffer from unsatisfactory spraying effects due to the scattering of spraying material, which results in inadequate surface treatment and cannot meet user requirements.
Innovation Solution
A spray head device with a conical through hole and spiral trunkings, combined with evenly spaced injection pipes, is used to accelerate and direct the spraying material in a swirling manner, reducing dispersion and enhancing impact force and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the spraying material is injected at high speed through a conventional spray head, then the sandblasting operation can be performed, but the spraying material scatters and the sandblasting effect is unsatisfactory
Solution Approach 1:
The spray head divides the spraying material flow into multiple separate streams through multiple nozzles arranged in a specific pattern, rather than using a single large nozzle. This segmentation prevents the material from scattering in an uncontrolled manner while maintaining high-speed injection for effective sandblasting
Solution Approach 2:
Different regions of the spray head have different nozzle configurations and angles optimized for specific local requirements. The nozzles are positioned and angled to create concentrated jets at specific locations, ensuring precise material delivery to the workpiece surface without unnecessary dispersion
2Device complexity
If the spray head structure is simplified, then the device complexity is reduced, but the spraying material cannot be properly accelerated and directed
Solution Approach 1:
The spray head incorporates dynamic flow channels that accelerate the spraying material through carefully designed converging sections. The internal geometry creates pressure gradients that convert pressure energy into kinetic energy, achieving high ejecting speeds without complex external acceleration mechanisms
Solution Approach 2:
The spray head utilizes pneumatic principles where compressed air or gas is used to accelerate the spraying material through the nozzles. The pneumatic pressure differential drives the material at high speed, eliminating the need for mechanical moving parts while achieving the required ejecting velocity
3Force
If the spraying material is ejected with high speed, then the impact force is improved, but the material disperses and uniformity is lost
Solution Approach 1:
The nozzles are designed with asymmetric geometries where the internal flow passages and exit angles are optimized to balance the competing requirements of high-speed ejection and controlled direction. The asymmetric design allows the material to maintain coherence while achieving the necessary impact velocity on the workpiece surface
Solution Approach 2:
The spray head arranges multiple nozzles in a three-dimensional configuration rather than a simple linear array. This spatial arrangement in multiple dimensions allows the material streams to converge on the workpiece surface from different angles, maintaining impact force while achieving uniform coverage through geometric distribution
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The improved spray head device enhances the sandblasting effect by increasing the ejecting speed and impact force of the spraying material, resulting in a more uniform and efficient treatment of automobile parts.
Implementation Method 1
since the caliber of the conical through hole becomes gradually smaller, the spraying material will accelerate, and the dispersion of the ejected spraying material can be reduced
Implementation Method 2
the arrangement of the spiral trunking enables the ejected spraying material to rotate around the spiral trunking, so as to increase the ejecting speed of the spraying material, improve the impact force
Implementation Method 3
multiple injection pipes are evenly spaced on the side wall of the connecting pipe, and this structure enables the airflow to flow into the conical through hole to be evenly distributed, thereby facilitating the spraying material ejected by the airflow more uniform
Implementation Method 4
the surface of a workpiece is cleaned and roughened by the impact of high-speed sand flow
Implementation Method 5
Due to the impact and cutting action of the spraying material on the surface of the workpiece
Data Source
AI summary
The present disclosure relates to the technical field of automobile part processing, and specifically provides a spray head device and a sandblasting device for automobile part processing. The spray head device comprises a spray head body and a connecting pipe. A conical through hole is penetratingly arranged in the spray head body, one end of the conical through hole forms a discharge port, the other end of the conical through hole forms a feed port, the caliber of the feed port is greater than that of the discharge port, the connecting pipe is fixedly connected to one end of the feed port of the spray head body, and the connecting pipe is coaxially arranged with the conical through hole; the conical through hole is penetratingly provided in the spray head body.