Suction Type Two-stage Filtration Shot Blasting Machine

The Suction Type Two-stage Filtration Shot Blasting Machine is a specialized surface treatment equipment that integrates shot blasting, shot recycling, and dust removal. Its core innovation lies in the "suction type" shot feeding mode and the "two-stage filtration" dust removal system. Compared with traditional shot blasting machines, this type of equipment has the advantages of high shot feeding efficiency, good dust removal effect, low environmental pollution, and uniform shot blasting effect. It is widely used in industries with high environmental requirements and strict surface treatment standards, such as precision machinery manufacturing, electronic components, aerospace, medical equipment, and automotive parts. The main function of the Suction Type Two-stage Filtration Shot Blasting Machine is to remove burrs, rust, oxide scale, oil stains, and other impurities on the surface of workpieces, improve the surface roughness and finish of workpieces, and prepare for subsequent processes such as coating, electroplating, and bonding. In addition, the shot blasting process can also improve the mechanical properties of the workpiece surface, such as increasing surface hardness and fatigue strength, thereby extending the service life of the workpiece.

The structural composition of the Suction Type Two-stage Filtration Shot Blasting Machine is mainly composed of a shot blasting chamber, a suction type shot feeding system, a shot recycling system, a two-stage filtration dust removal system, a workpiece conveying system, and an electrical control system. Each system is closely connected and coordinated to ensure the efficient and stable operation of the equipment. The shot blasting chamber is the main working area, which is usually made of high-strength wear-resistant steel plates, and the inner wall is lined with wear-resistant rubber or polyurethane materials to reduce the impact and abrasion of shot particles on the chamber wall. The design of the chamber is compact, which can effectively control the diffusion of shot particles and dust, ensuring the safety and cleanliness of the working environment. The workpiece conveying system is used to transport the workpiece into and out of the shot blasting chamber. According to the size and shape of the workpiece, it can be designed as a belt conveyor, a roller conveyor, a chain conveyor, or a manipulator. The conveying speed is adjustable, which can be set according to the shot blasting process requirements to ensure that the workpiece has sufficient shot blasting time.

The suction type shot feeding system is the key part that distinguishes this equipment from traditional shot blasting machines. It is composed of a shot storage bin, a suction pump, a shot conveying pipeline, a shot blasting gun, and a pressure regulating valve. The working principle of the suction type shot feeding is that the suction pump generates negative pressure in the shot conveying pipeline, and the shot particles in the shot storage bin are sucked into the pipeline under the action of atmospheric pressure and transported to the shot blasting gun. The shot blasting gun sprays the shot particles at high speed to the surface of the workpiece to achieve shot blasting. Compared with the traditional mechanical shot feeding mode, the suction type shot feeding has the advantages of simple structure, stable shot flow, easy adjustment, and low noise. The pressure regulating valve can adjust the negative pressure in the pipeline, thereby controlling the flow rate and speed of the shot particles. The number and layout of the shot blasting guns can be designed according to the size and shape of the workpiece. For complex-shaped workpieces, multiple shot blasting guns can be arranged at different angles to achieve all-round shot blasting.

The shot recycling system is responsible for collecting and recycling the shot particles after shot blasting, which is composed of a suction hood, a recycling pipeline, a separator, and a shot storage bin. The suction hood is installed at the bottom and around the shot blasting chamber to collect the shot particles and impurities (such as rust, oxide scale, burrs) generated during the shot blasting process. Under the action of the suction pump, the mixture of shot particles and impurities is transported to the separator through the recycling pipeline. The separator uses the principle of gravity separation and air separation to separate the qualified shot particles from the impurities. The qualified shot particles are sent back to the shot storage bin for recycling, and the impurities are discharged to the waste collection box. The shot recycling system has high recycling efficiency, which can reduce the consumption of shot particles and reduce production costs.

The two-stage filtration dust removal system is the core part of the equipment to ensure environmental protection performance, which is composed of a primary cyclone dust collector, a secondary filter bag dust collector, a fan, and a dust exhaust pipeline. The dust generated during the shot blasting process is first sucked into the primary cyclone dust collector. The cyclone dust collector uses the centrifugal force generated by the high-speed rotation of the air flow to separate the large-particle dust (such as large oxide scale particles) from the air flow. The large-particle dust falls into the dust collection hopper of the cyclone dust collector. The air flow containing small-particle dust after primary filtration enters the secondary filter bag dust collector. The filter bag in the dust collector is made of high-efficiency filter material (such as polyester fiber, PTFE), which can capture the small-particle dust in the air flow. The purified air flow after secondary filtration is discharged into the atmosphere through the fan and the dust exhaust pipeline. The two-stage filtration dust removal system has a high dust removal efficiency, which can remove more than 99.9% of the dust particles in the air flow, and the emission concentration of dust is far lower than the national environmental protection standard. In addition, the filter bag can be cleaned regularly (by pulse jet cleaning), which ensures the long-term stable operation of the dust removal system.

The electrical control system of the Suction Type Two-stage Filtration Shot Blasting Machine is composed of a PLC controller, a touch screen, sensors, and actuators. The operator can set the process parameters (such as shot flow rate, shot blasting time, conveying speed, dust removal fan speed, etc.) through the touch screen. The PLC controller controls the operation of each system according to the set parameters. The sensors are used to monitor the operating status of the equipment, such as the level of shot particles in the shot storage bin, the pressure difference of the filter bag (to judge whether the filter bag is blocked), the temperature of the suction pump motor, etc. If an abnormality is detected, the system will automatically alarm and take corresponding protective measures (such as stopping the machine), ensuring the safety of the equipment and the operator. Some advanced models are also equipped with a remote monitoring function, which allows the operator to monitor the operating status of the equipment and adjust the process parameters through a computer or mobile phone, realizing intelligent management.

The working principle of the Suction Type Two-stage Filtration Shot Blasting Machine is as follows: First, the operator places the workpiece on the workpiece conveying system, and sets the relevant process parameters through the touch screen. Then, the equipment starts to work. The suction pump generates negative pressure, and the shot particles in the shot storage bin are sucked into the shot conveying pipeline and transported to the shot blasting gun. The shot blasting gun sprays the shot particles at high speed to the surface of the workpiece in the shot blasting chamber, removing the impurities such as burrs and rust on the surface. During the shot blasting process, the workpiece conveying system drives the workpiece to move at a uniform speed, ensuring that all surfaces of the workpiece are uniformly blasted. At the same time, the suction hood collects the shot particles, impurities, and dust generated during the process. The mixture of shot particles and impurities is transported to the separator through the recycling pipeline, and the qualified shot particles are separated and recycled to the shot storage bin. The dust is sucked into the two-stage filtration dust removal system. After being filtered by the cyclone dust collector and the filter bag dust collector in turn, the purified air is discharged into the atmosphere. After the shot blasting is completed, the workpiece conveying system transports the workpiece to the discharge port, and the operator takes out the workpiece. The entire process is automated, which not only improves production efficiency but also ensures the stability of the shot blasting effect and the cleanliness of the working environment.

The Suction Type Two-stage Filtration Shot Blasting Machine has many unique technical advantages. First, the suction type shot feeding mode has high efficiency and stability. The shot flow rate can be adjusted steplessly through the pressure regulating valve, which can meet the shot blasting requirements of different workpieces. At the same time, the shot feeding system has no mechanical wear parts, which reduces the maintenance workload and extends the service life of the equipment. Second, the two-stage filtration dust removal system has an excellent dust removal effect. It can effectively separate large-particle and small-particle dust, and the emission concentration of dust is low, which meets the strict environmental protection requirements of modern industry. Third, the shot blasting effect is uniform. The reasonable layout of the shot blasting guns and the adjustable conveying speed ensure that the surface of the workpiece is uniformly hit by shot particles, and the surface roughness and finish are consistent. Fourth, the equipment has a compact structure and small floor space. It is suitable for use in workshops with limited space. Fifth, the operation and maintenance are simple. The automated control system reduces the labor intensity of the operator, and the wearing parts are easy to replace, which reduces the maintenance cost.

The application scope of the Suction Type Two-stage Filtration Shot Blasting Machine is mainly concentrated in industries that require high surface treatment quality and strict environmental protection standards. In the precision machinery manufacturing industry, it is used for the surface treatment of precision parts such as gears, bearings, and shafts. It can remove burrs and oxide scale on the surface of parts without damaging the precision of the parts, improving the performance and service life of the parts. In the electronic components industry, it is used for the surface treatment of electronic parts such as connectors and terminals. It can remove oil stains and oxides on the surface of parts, improving the conductivity and solderability of the parts. In the aerospace industry, it is used for the surface treatment of aerospace components such as engine blades and structural parts. It can improve the surface quality and fatigue strength of components, ensuring the safety and reliability of aircraft. In the medical equipment industry, it is used for the surface treatment of medical instruments such as surgical instruments and implants. It can remove impurities on the surface of instruments, ensuring the cleanliness and biocompatibility of the instruments. In the automotive parts industry, it is used for the surface treatment of high-precision auto parts such as fuel injectors and sensors. It can improve the surface finish and corrosion resistance of parts, ensuring the normal operation of the automobile.

The maintenance and maintenance of the Suction Type Two-stage Filtration Shot Blasting Machine are crucial to ensure the stable operation of the equipment and the good shot blasting effect. Daily maintenance mainly includes the following aspects: First, check the suction type shot feeding system. Regularly check the operation of the suction pump, the tightness of the shot conveying pipeline, and the wear of the shot blasting gun. If there is air leakage in the pipeline, it should be sealed in time. If the shot blasting gun is worn, it should be replaced to ensure the stability of the shot flow. Second, maintain the shot recycling system. Regularly clean the separator and the waste collection box to remove impurities and avoid blocking the pipeline. Check the level of shot particles in the shot storage bin and add shot particles in time. Third, maintain the two-stage filtration dust removal system. For the primary cyclone dust collector, regularly clean the dust collection hopper. For the secondary filter bag dust collector, regularly check the filter bag for damage and blockage. If the filter bag is blocked, it should be cleaned or replaced in time to ensure the dust removal effect. Check the operation of the fan and the tightness of the dust exhaust pipeline. Fourth, check the workpiece conveying system. Regularly check the wear of the conveyor belt, roller, or chain, and adjust the tension of the conveyor belt or chain. Add lubricating oil to the moving parts to reduce friction. Fifth, maintain the electrical control system. Regularly check the connection of electrical components, clean the dust on the PLC controller and touch screen, and ensure the stable operation of the electrical system. In addition, the equipment should be comprehensively maintained every six months to one year, including disassembling the shot blasting chamber to check the wear of the inner lining, overhauling the suction pump and fan, and calibrating the sensors and actuators.

In summary, the Suction Type Two-stage Filtration Shot Blasting Machine is a high-performance surface treatment equipment with advanced technology, environmental protection, and efficiency. Its unique suction type shot feeding mode and two-stage filtration dust removal system make it stand out in the field of surface treatment. With the increasing requirements of modern industry for environmental protection and product quality, this type of equipment will have a wider application prospect. When using the equipment, it is necessary to strictly follow the operating procedures and do a good job in daily maintenance and maintenance to ensure the long-term stable operation of the equipment and the improvement of product quality.