51results about How to "Avoid hole plugging" patented technology

The invention discloses a drill-hole cleaning free blasting charge structure adopting a VCR mining method and a construction method of the drill-hole cleaning free blasting charge structure. A blasting segment of a blasthole is filled with multiple layers of explosives in a layered manner. The explosives are spaced by particle filler. The explosives are guided out of the blasthole through a detonation assembly to be connected with a detonation network. The length of the explosive at the topmost layer is smaller than the length of the rest of layers of explosives, the position, above the explosive at the topmost layer, of the blasthole is filled with particle filler, and the position, above the particle filler, of the blasthole is filled with a water column. The reasonable and scientific charge structure is adopted, the combined blocking structure of a small quantity of explosives, particle blockage and the water column is adopted on the upper portion of the explosive on the top layer,the phenomenon of hole blocking of the top non-blast segment is effectively eradicated fundamentally, the additional economic cost caused by the drill-hole cleaning workloads due to blasting hole blocking is saved, the production construction period is prevented from being delayed, and the negative effects caused by large-charge-mass blasting in the VCR mining method are greatly reduced.

The invention relates to a solid-liquid dual-purpose high-temperature and high-pressure carbonization reaction kettle capable of indicating the degree of carbonization, including a support frame, a reaction kettle body, a kettle cover, a stirring member, a heating member, a test piece support and a carbonization degree indicator, wherein the The reaction kettle body is fixedly placed on the support frame, the kettle cover is arranged on the reaction kettle body, and can form a closed reaction cavity with the reaction kettle body, and the kettle cover can be detachably installed and extended into the reaction cavity The stirring piece, the heating piece is arranged in the reactor body, the solid specimen to be reacted can be placed on the specimen support, and the cooling water coil for cooling the reaction cavity is also installed in the reactor body , the carbonization degree indicator is used to display the carbonization degree of the test piece in the reaction kettle, and is connected with a pressure sensor extending into the reaction cavity of the reaction kettle body. Compared with the prior art, the present invention can realize multi-material, adaptable to multi-condition and highly efficient controllable carbonization reaction through simple design, with high utilization rate and low cost.

The invention discloses a bearing steel ball cleaning device with a screening function, and relates to the technical field of bearing steel ball cleaning equipment; in order to improve the screening effect; it specifically includes a base, and the outer wall of the top of the base is fixed with a first support frame and a second support frame by screws. A support frame, the outer wall of one side of the first support frame is fixed with a first motor by screws, the output end of the first motor is connected to a rotating main shaft through a coupling, and a cleaning chamber is welded on the outer wall of one end of the rotating main shaft, so The outer wall on one side of the second support frame is fixed with a support tube by screws, and the inner wall on one side of the cleaning chamber is sealed and rotatably connected to the outer wall of the support tube. The invention facilitates the screening of steel balls during the rotation of the cleaning chamber by setting the sieve material arc plate and other structures. Since the gap between the sieve material arc plate and the bottom inner wall of the cleaning chamber is smaller than the diameter of the bearing steel ball to be cleaned, the sieve The material arc plate can reliably screen out damaged or substandard steel balls.

The invention discloses continuous aluminum oxide feeding equipment which comprises a material box, a feeding air cylinder, a fixed container, a crust breaking head, a material passing frame, an oblique plate, a buffer and a feeding pipe. The feeding pipe is led to the bottom of the crust breaking head. The continuous aluminum oxide feeding equipment further comprises an air pipe which is arranged at a buffer outlet and used for blowing air to the buffer outlet. Compared with the prior art, the continuous aluminum oxide feeding equipment has the beneficial effects that (1) aluminum oxide is made to enter an electrolyte slowly, and the temperature fluctuation of an electrolytic cell and the concentration fluctuation of the aluminum oxide are reduced, so that the current efficiency is improved, and energy consumption is reduced; (2) the aluminum oxide is made to have enough time to be melted into the electrolyte, so that sediment at the furnace bottom is reduced, the pressure drop at the furnace bottom is reduced, and energy consumption is reduced; (3) the aluminum oxide is made to enter the electrolyte slowly through a pipeline, and the crust breaking head is prevented from being impacted so that the aluminum oxide can be prevented from being dispersed, the actual amount of materials entering the electrolytic cell is increased, and the effect coefficient is decreased; and (4) large particles in the aluminum oxide are blown away through the gas reverse blowing principle, so that blockage is eliminated, and the hole blockage phenomenon can be effectively prevented.