42results about How to "Guaranteed to eat" patented technology

The invention discloses a modular cutting tooth with a controllable drilling specific pressure. The modular cutting tooth comprises a module (1) and module units (2). The modular cutting tooth disclosed by the invention serves as a cutting unit of a drill bit, and the combinational design of the shapes, the specifications and the numbers of the module and the module units and the optimal selection of materials of the module and the module units are carried out according to the rock mechanical properties of a drilled stratum and the drilling requirements, so that the effective cutting edge length of the cutting unit at a specific part of the drill bit is controlled, the constant specific pressure of the cutting unit of the drill bit during the process of drilling is maintained, the effective wearing volume of the cutting unit is greatly increased, and the effective rate of utilization of the cutting unit is increased. Due to the modular cutting tooth, the average mechanical penetration rate and the drilling footage of the drill bit under complex geological conditions, in particular hard formations or abrasive formations, can be greatly increased, the service life of the drill bit can be prolonged, and the drilling cost is reduced.

The invention belongs to a water curtain box for ammonia gas absorption of a livestock breeding house. The water curtain box comprises a box body and a water curtain box base arranged at the bottom of the box body, the box body is provided with front aerating plates and lateral aerating plates, a water inlet and a water outlet are arranged below the lateral aerating plates, the bottom of the box body is provided with a water sink, an annular water channel is arranged on the periphery of the water sink, wet curtain plates are arranged in the annular water channel, an annular water pipe is arranged on the upper sides of the wet curtain plates, the bottom of the annular water pipe is provided with water holes, and an axial fan, a floater switch and an air cooler water pump are arranged at the inner bottom of the box body. The water curtain box base comprises a bottom plate, vertical plates and surface plates. The wet curtain plates are arranged on the periphery of the water curtain box, water in the water sink cyclically flows in the wet curtain plates via the axial fan and the air cooler water pump, ammonia gas is repeatedly absorbed, concentration of the ammonia gas in the breeding house is effectively reduced, growth speed and feed conservation ratio of livestock are increased, disease rate of the livestock is decreased, cost of enterprises is saved, and environmental pollution caused by discharge of the ammonia gas is avoided.