Screening grinding type deburring grinding equipment for valve casting

Abstract

The invention discloses screening grinding type deburring grinding equipment for a valve casting. The screening grinding type deburring grinding equipment for the valve casting comprises a grinding box body; the top of the grinding box body is provided with a driving shaft, a motor, a feeding port and a sand feeding hopper; the driving shaft is connected to eccentric positions of a first screeningtray, a second screening tray, a third screening tray and a fourth screening tray in a penetrating manner in sequence from top to bottom; any screening tray is provided with a stop edge and a discharging gap; a withdrawing screening plate is arranged below the fourth screening tray; a sand leakage screening plate is arranged below the withdrawing plate; sand grinding rolling balls are padded between the withdrawing screening plate and the sand leakage screening plate; a sand discharging hopper is arranged on the bottom wall of the grinding box body; a collecting box is arranged below the sanddischarging hopper; and the bore diameter of the first screening tray, the bore diameter of the second screening tray, the bore diameter of the third screening tray and the bore diameter of the fourth screening tray are reduced gradually. According to the screening grinding type deburring grinding equipment for the valve casting, eccentrically rotating screening trays are taken as a valve castingand sand grinding place; the valve casting is ground by utilizing sand with different particle sizes in sequence so that the effects of deburring, polishing and grinding are achieved simultaneously;the grinding efficiency is high; the surface of the valve casting does not have damage; and a quick and non-damaging grinding mode is realized.

Description

technical field [0001] The invention relates to the technical field of casting valves, in particular to sieve grinding type deburring and grinding equipment for valve castings. Background technique [0002] Casting valves are valves formed by casting. The casting process of valves usually includes: ① casting mold, ② melting and pouring of cast metal, ③ casting processing and inspection. Among them, the casting treatment includes removing foreign matter on the core and casting surface, cutting off the riser, scraping and grinding burrs and seams and other protrusions, as well as heat treatment, shaping, anti-rust treatment and rough machining. [0003] The surface of the existing cast valves is relatively rough and the precision is low, and it is often necessary to carry out deburring and polishing treatment, especially the surface treatment of the sealing surface, especially the need for grinding treatment. However, the surface treatment of the prior art mainly adopts the s...

AI Technical Summary

Problems solved by technology

However, the surface treatment of the prior art mainly adopts the sand washing method, which is easy to cause damage or deformation on the surface of the casting during the sanding impact process, especially for thinner valve castings, the sand washing damage is greater, and the sanding method needs to be changed urgently

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