Essential constructive elements of the currently known machines and devices, which work by means of vacuum blasting, are improved in the surface cleaning and engraving machine that operates via a vacuum jet process in order to enable more effective cleaning of different surfaces, further applications and simplification of the handling of the machine or device. With the modifications and additions made, the application options of the machine or device are increased, the potential of clogging the suction hose is reduced to a minimum, the service life of the machine is extended and the efficiency and operating options of the blasting hood are improved. For this purpose, technical and design details of an already known machine are supplemented and improved; there are, for instance, a metering device (3), additions to the blasting hood (6) and measures to extend the service life of the machine by using rock impact films (31).

A waterjet system is provided, including a pump configured to pump fluid, an electric motor configured to drive the pump; a hopper configured to store abrasive, a mixing chamber configured to mix abrasive from the hopper and the fluid from the pump to produce a slurry, where the fluid entering the mixing chamber is at a pressure between 2000 psi and 8000 psi, a cutting bed configured to receive a workpiece to be cut, and a cutting head, including an outlet nozzle, in downstream fluid communication from the mixing chamber, the cutting head configured to expel the slurry through the outlet nozzle as a high-velocity jet into the cutting bed.

Disclosed herein are an apparatus and system for separating reusable abrasive media from non-reusable media. The system for separating reusable abrasive media from non-reusable media having a housing defining an enclosure and being configured for further separating previously sorted and discarded abrasive media, the shot peening efficiency system operating via the housing comprising: a symmetrically bisected housing having a left housing component and a right housing component having an angled opening configured to receive an abrasive media inlet valve wherein the left housing component and the right housing component are connected via one or more fasteners; wherein the symmetrically bisected housing is deep set at the left housing component and the right housing component in a manner configured to accept a separator assembly comprising at least one wire mesh screen, at least one vibratory motor, and one or more mounting hardware components. Also disclosed are methods of using apparatus and system.

A system and method for grit recycling includes a first stage and a second stage. The first stage includes a first apparatus adapted to coarsely separate reusable grit from waste material. The second stage is positioned adjacent the first stage such that the coarsely separated reusable grit from the first outlet of the first stage is automatically input to the second stage. The second stage includes a second apparatus adapted to finely separate the reusable grit from the waste material.

An air wash abrasive particle separator apparatus which separates contaminants from previously-used abrasive particles contained in a contaminated abrasive particle mixture such that the abrasive particles may be re-used multiple times, the apparatus being in combination a contaminated abrasive particle mixture delivery device, an accumulator hopper assembly, a volume sensing device, an automatic flow control valve, a separator assembly and an air transfer device.

A mobile steel grit dryer used to dry steel grit may be configured with a number of different functions and features to assist a contractor in performing steel or other structure maintenance when using steel grit in resurfacing the structure. The steel grit dryer may be configured with a heat process vacuum bypass so that an off-board vacuum, such as a vacuum on a grit recycling system, may be utilized as opposed to having an onboard vacuum. The dryer may include multiple modes so that an operator may use different modes for different environmental conditions. An exoframe may provide for better durability when being transported to different jobsites. A variety of automation and safety features may also be provided to simplify and improve safety for operators.

The recycling unit is the technology for the continuously controlled process of recycling and drying screened abrasive during which the intensity of batching of the abrasive is regulated according to the temperature in the drying oven. The control system continuously measures the current temperature and on the basis of this data it decides on switching the heating elements on or off or turning the batching process on or off; this control is based on the temperature hysteresis and on changing the intensity of batching of abrasive, which is subject to switching the heating elements or turning the batching process on or off.

An abrasive recovery system for a waterjet cutter, the abrasive recovery system comprising: a drain coupler including at least one drain nozzle, the drain nozzle having at least one wall defining a drain nozzle bore, the drain coupler defining a drain opening wherein the drain opening is in fluid communication with the drain nozzle bore; and a flexible hose coupled to the drain nozzle to establish fluid communication between the drain opening and the flexible hose.

A multi-procedure integrated automatic production line for hard alloy blades under robot control is provided. The production line includes a rail-guided robot. A cutter passivation device and a blade cleaning and drying device are arranged on one side of the rail-guided robot. A blade-coating transfer table, a blade coating device, a blade boxing transfer table, a blade-tooling dismounting device and a blade boxing device are sequentially arranged on another side of the rail-guided robot. The blade-tooling dismounting device is arranged on one side of the blade boxing transfer table. The production line further includes squirrel-cage toolings for carrying the blades. The squirrel-cage tooling that are loaded with the blades can run among the cutter passivation device, the blade cleaning and drying device, the blade-coating transfer table and the blade boxing transfer table. The blades after being treated through the blade-tooling dismounting device are sent to the blade boxing device.

The present disclosure relates to methods for distressing an object by projecting polysaccharide particles onto a surface of the object. The present disclosure relates also to methods for cleaning the distressed fabric or garment and optionally methods for recycling the polysaccharide particles. In one embodiment, a method for distressing an object comprises suspending polysaccharide particles in a gas, creating a suspension, and projecting the suspension onto an object.