4results about How to "Improve ventilation quality" patented technology

This invention belongs to the field of coal mine rockburst and gas control, specifically involving a coal seam mining method based on directional drilling and hydraulic fracturing for depressurization and gas extraction. The method includes tunneling and hauling uphill, while simultaneously conducting depressurization and pre-gas extraction of the entire first mining face area through directional drilling from the surface. Then, negative pressure ventilation is implemented through the directional drilling on the surface. After the hauling and uphill tunneling is completed, the first mining face can be started immediately, with simultaneous return air tunneling. This significantly improves the timing and efficiency of starting the first mining face, allowing for faster recovery and cost reduction. Furthermore, during negative pressure ventilation at the surface using directional drilling, the gas and coal dust generated at the tunneling face flow with the airflow through the directional drilling to the surface, minimizing health impacts on workers at the tunneling face and greatly improving the safety of the working environment.

The present invention belongs to the technical field of ventilators, and discloses an emission reduction lighting ventilator and a working method thereof, including a filter box, a ventilation assembly fixedly installed at the front end of the filter box, an air inlet opened at the rear end of the filter box, a ventilation fan movably installed in the middle of the filter box, power assemblies installed on the left and right sides of the filter box, the middle of the power assembly penetrates the middle of the filter box and is fixedly connected with the ventilation fan, and a filter screen located between the ventilation fan and the air inlet is detachably installed at the rear end of the filter box. The present invention utilizes the power required by the device for exhausting air and distributes the power through the power assembly, so that the device can automatically clean the front and rear ends of the filter screen after being used for a period of time without disassembling the filter screen. The whole process is completed automatically without disassembling the filter screen, which can effectively avoid the problem that traditional devices require complicated disassembly and assembly processes, thereby improving the cleaning effect.

The embodiment of the utility model provides an air guide device and an air conditioner, relates to the technical field of air guide equipment, and aims to solve the problem that an outer frame of the air guide device is difficult to clean in the prior art. The air guide device comprises an air guide frame, an air guide movable assembly and a first driving mechanism. The air guide frame is provided with a first opening and a second opening, the first opening and the second opening are located in the two opposite sides of the air guide frame, and an air guide channel is formed between the first opening and the second opening. At least part of the air guide movable assembly is located in the air guide channel, and the air guide movable assembly is configured to adjust the air outlet direction of the air guide channel. And the first driving mechanism is arranged on the air guide frame, and the first driving mechanism is configured to drive the air guide movable assembly to move in the depth direction of the air guide channel. The air guide device is suitable for air conditioning equipment.

The utility model discloses an air leakage prevention device for a coal mine, which relates to the technical field of coal mine machinery, and comprises a support body, one side of the support body is movably connected with a baffle plate through a pin shaft structure, a baffle block is arranged above the baffle plate, one side of the baffle plate far away from the pin shaft structure is fixedly connected with a pull rope, one side of the support body is provided with a rope sleeve, and the rope sleeve is fixedly connected with the baffle plate. The pull rope is arranged in the rope sleeve in a penetrating mode, one end of the pull rope is fixedly connected with a pull rod, one side of the supporting body is fixedly connected with a pull rod sleeve used for limiting the pull rod, connecting threads are arranged at the two ends of the pull rod, and a threaded hole is formed in the pull rod sleeve. Through the arrangement of the pull rod and the pull rope, the baffle can be pulled to be opened and closed, the air leakage prevention effect is achieved, the device is simple in structure, low in cost and convenient to use, the working environment can be well improved, the mine ventilation quality is improved, the air leakage phenomenon of the funnel is fundamentally eradicated, the negative pressure effect is avoided, and gas accidents are reduced.