6 results about "Magnetic starter" patented technology

This invention discloses a coal mine drainage system, belonging to the field of drainage technology. It includes a power supply switch circuit and a drainage device. The power supply switch circuit is connected to the drainage device via a magnetic starter. The power supply switch circuit includes a time-delay relay. The protection output point of the power supply protector and the normally closed contact of the power supply auxiliary relay are connected to the coil circuit of the time-delay relay. A rotary switch is connected in series between the time-delay relay and the power supply protector. The normally closed contact of the time-delay relay is connected to the power supply reset button, and the normally open contact is connected to the power supply closing button. The drainage device includes drainage equipment, a pneumatic knife gate valve, and a gate valve control device. The drainage pipeline is connected to the inlet of the drainage equipment. The outlet of the drainage equipment is connected to a check valve and then connected to a central pump room. The gate valve control device is connected to the pneumatic knife gate valve, which is installed on the drainage pipeline of the old mine. This invention can easily realize automatic power-on start-up and automatic water shut-off functions, achieving unattended operation at the drainage site.

The utility model relates to the technical field of magnetic starters, in particular to an explosion-proof magnetic starter which comprises a magnetic starter body, a magnetic starting module is fixedly arranged on one side in the magnetic starter body, and wires distributed in an array are fixedly connected to the lower side of the magnetic starting module. Two mounting frames are fixedly mounted on one side in the magnetic starter body, and round rods are fixedly connected to the inner side faces of the two mounting frames, so that wires are stably fixed between the limiting concave blocks and the limiting clamping plates, the wires are classified and managed, the wires are prevented from being easily wound together, and the service life of the wires is prolonged. And meanwhile, a wire needing to be overhauled can be quickly found in cooperation with a corresponding label plate, so that the overhauling efficiency of the magnetic starter is improved, the first sealing front cover and the second sealing front cover are assembled and disassembled in a clamping mode, the whole magnetic starter can be flexibly assembled and disassembled, and time and labor are saved.

The utility model belongs to the technical field of mechanical assembly, and provides a long barrel end cover thread tightening device which comprises a lathe bed, a movable sliding table, a clamping bracket, a tightening mechanism, a speed reducer, a speed changer, an explosion-proof motor, an explosion-proof button, an explosion-proof circuit breaker and an explosion-proof magnetic starter. A movable sliding table and a clamping bracket are arranged on the lathe bed, and a tightening mechanism, a speed reducer, a transmission and an explosion-proof motor are arranged on the movable sliding table; the explosion-proof motor is connected with an explosion-proof magnetic starter, an explosion-proof breaker and an explosion-proof button; according to the equipment, the explosion-proof motor, the speed reducer and the clamping jaw wrench can move through the movable sliding table, so that the clamping jaw wrench is matched with the end cover, the explosion-proof motor rotates to generate torsion, the torsion is transmitted to the clamping jaw wrench through the speed changer and the speed reducer, the end cover is screwed with a long cylinder workpiece through rotation, and work is stopped when the torque set by the torque limiter is reached; the equipment is simple in structure, convenient to operate and capable of completing tightening work of the end cover of the long cylinder workpiece with high quality.

1. The name of the design product: combination switch (two feed six magnetic force). 2. The use of the design product: suitable for coal mine underground with methane and coal dust explosion hazard, used as multi-loop feed, magnetic starter and lighting output explosion-proof equipment. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best shows the design points: perspective view.

The utility model provides a connecting device of a magnetic starter, the magnetic starter comprises a shell and an upper cover arranged above the shell, the connecting device comprises a positioning rod inserted into a cover plate and a threaded rod inserted into the shell, the threaded rod can be inserted into the positioning rod and is in threaded connection with the positioning rod, and the upper cover is arranged above the shell. A thread extension part is arranged on the positioning rod, an insertion groove for the positioning rod to be inserted is formed in the shell, a thread groove matched with the thread extension part is formed in the insertion groove, and an abutting device used for fixing the position of the positioning rod is arranged between the thread extension part and the insertion groove. According to the connecting device, the defect that in the prior art, after the fastening nails are disassembled for multiple times, the connecting positions of the shell and the cover plate and the fastening nails are abraded, and therefore gaps are formed in the connecting positions of the shell and the cover plate can be overcome.

1. The name of the design product: combination switch (four feed eight magnetic force). 2. The use of the design product: used as explosion-proof equipment of multi-loop feed, magnetic starter and lighting output in coal mine underground with methane and coal dust explosion danger. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that can best show the design points: perspective view.