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The main configuration of shot blasting machine


Shot blasting machine is a casting equipment that uses high-speed shots thrown from a shot blaster to clean or strengthen the surface of the casting. After decades of continuous development, the shot blasting machine has developed from the traditional fixed to the current mobile, from horizontal to vertical. Shot blasting machine develops from a single kind of machinery to a field, from a single production process to a part of the entire production process. The shot blasting machine is continuously extended to every industry, bringing great convenience to the production processes of various industries.

1. Main equipment composition and structural characteristics

It is mainly composed of shot blasting cleaning room, shot blaster assembly, shot blasting sealed room, shot recycling purification system, copper tube drive train line, dust removal system and control system. Most of the plate welding parts prepared by this equipment have been shot blasted. This shot blasting machine is a roller-type shot blasting cleaning equipment. Improved rust prevention.

① Shot blasting room

The inside of the chamber is lined with a 15-1-2 type wear-resistant protective plate, and the shell of the shot blast cleaning chamber is a separable integral structure welded with steel plates and sections. The guard plate adopts a lap combination structure, which is beneficial to prevent the projectile from abrading the chamber body, and it is easy to replace the guard plate during maintenance, which prolongs the service life of the machine and reduces the labor intensity of workers.

Reduced the cost of the whole machine, the entrance and exit of the cleaning room at both ends are in the form of multilayer polyurethane coated spring steel plates. In addition, the sealing performance is good, and the safety of the operator is guaranteed. Two curved blade shot blasters project the projectiles upward from the bottom of the shot blasting chamber, diversifying the cleaning specifications of the steel pipe, and ensuring the cleaning quality of the steel pipe, which is more conducive to the discharge of dust.

② projectile circulation separation system

It should be ensured that the projectiles in the circulation system can enter the hopper bin and there are enough projectiles in the hopper bin. The projectile circulation separation system is composed of the projectile circulation system and the separation system. The projectile circulation system includes: a first-class shot bin, nine pipes, a gas-controlled gate, a shot blaster, a cleaning chamber, an inclined funnel, a hoist, a separator, and a shot bin. Before shot blasting starts. To ensure that the shot blaster has enough projectiles to circulate during the work process. The pellet separator is a purification system. When the projectile is lifted by the hoist, it first enters the spiral sieve of the separator. After the preliminary selection, it drops down in the form of rain. After this treatment, large particles and debris are first separated, and then magnetic and wind After sorting, fine particles and dust are also separated out, and at the same time, the clean projectiles enter the circulation system, which ensures the cleanliness of the projectiles and thus ensures good cleaning quality.

③ Shot blasting device

The directional sleeve is fixed on the body of the shot blaster. Rotating directional sleeve, the shot blasting machine is mainly composed of main components such as the inlet tube, impeller, blade, shot wheel, directional sleeve, linked disk, bearing seat, main shaft, motor, shield, protective plate and so on. The pelletizing wheel is fixed on the main shaft and rotates with the blade. The throwing direction of the steel shot can be changed, and the angle of the directional sleeve window determines the radial scattering angle of the shot, which is generally about 60 ° C. The steel shot projectile is olive-shaped.

The bearing seat is supported by anti-vibration rubber, and a single-row radial bearing is arranged on the impeller shaft. This can reduce the vibration caused by the imbalance of the impeller, thereby improving the service life of the bearing. The operating temperature of the bearing is allowed to work in the range of 100 ° C, but it must not be allowed to work above 100 ° C.

④ Dust removal system

It is discharged by high pressure centrifugal fan after filtering. The dust is blown back by the pulsation tube, falls into the bottom ash bucket, and is discharged through the screw. The dust removal system consists of MC108-Ⅱ dust collector, centrifugal fan, and the connecting pipe from the cleaning room, the separator to the dust collector, etc., its working principle is: the dust-containing gas generated during the work of the thrown nine cleaning machine enters the dust through the dust removal pipe Device.

2.Working principle of shot blasting machine

At the same time the projectile gate is closed. 1Steel pipe cleaning sequence: steel pipe detection in place _ steel pipe rotation forward shot blasting room-shot sluice gate opened-steel pipe shot blasting cleaning-steel pipe rotating out of the Yue shot blasting room

2 projectile circulation sequence: projectile storage-flow control-shot blaster-blasting bucket conveying projectiles-bucket elevator-shot residue separator-storage bucket (recycling)

3 Dust disposal sequence: shot blast room dust, separator dust-butterfly valve air volume control mdash; inertia dust collector a bag type or filter cartridge dust collector, a fan and a row of air into the atmosphere.

3.Working process of shot blasting machine

1. Place the workpiece on the feeding conveyor and enter the working belt after vibration. Automatically sent to the vibration feed port.

2. The high-speed projectile thrown by the shot blaster hits the appearance of the workpiece, and the workpiece rotates slowly with the working belt and enters the shooting area. To achieve the purpose of cleaning up appearance.

3. The projectile is gradually pushed to the entrance by the auger, and the projectiles thrown are concentrated under the bed. Drop it into the vibrating screen and discharge the screened debris out of the bed. The qualified projectiles after the screen are lifted by the hoist to the upper part of the machine tool and re-entered the shot blasting machine for shot blasting.

4. After the remaining shots are cleaned by the roller transmission, the workpieces are shot blasted. It is sent to the discharge port by the conveyor.

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