39results about How to "Avoid clogging damage" patented technology

The invention discloses equipment for preparing atomized quick-setting magnetic abrasive, which consists of two parts: an atomizing part and an air flow powder feeding and mixing part. An atomizing device comprises a metal melting electric furnace, a crucible, a discharge spout, a jet nozzle, an atomizing chamber, cooling water, a powder collecting container and an exhausting and dedusting mechanism. An air flow powder feeding and mixing device comprises air flow powder feeding mechanism and an air flow powder mixing mechanism, wherein the powder mixing mechanism comprises a high-pressure air inlet pipe, a powder feeding mechanism, a discharging pipe, a jet pressure control valve, a jet pressure meter and a flow mixing pipe; and the powder feeding mechanism comprises a feed control valve, an air inlet, a balance air inlet pipe, a balance valve, a balance pressure meter, a feed tank, a spray valve, a spray air inlet pipe, a spray pressure meter, a round pipe casing, a jet pressure control valve, a balance valve, a spray valve, a round pipe casing, a spray air pressure meter, a balance air pressure meter and a jet pressure meter. By forcefully combining ferromagnetic metal with low compatibility and hard abrasive, high-performance magnetic abrasive which has high magnetoconductivity, high grinding force, controllable particle size, high structural strength, spherical structural form and long service life is prepared.

The invention discloses a novel agricultural water-saving regulator device for irrigation. Its structure includes a water-saving control valve, a connecting pipe, a connecting pipe, a fixed sleeve, and an interface. The right end of the water-saving control valve is welded to the left end of the connecting pipe. One end of the pipe is welded to the right end of the connecting pipe, and the other end is welded to the left end of the fixed sleeve. The interface is set in the middle of the fixed sleeve, and the two are integrated structures. When the valve is closed, an algaecide can be added in the water pipe to eliminate the algae in the water pipe and prevent it from adhering to the inner wall of the pipe to grow. This will cause the pipe to be blocked and damaged for a long time. At the same time, the connection of the pipe will be damaged. Reinforcement is carried out to prevent the pipeline from falling off due to the vibration of water transportation when the threaded part of the pipeline is damaged.

The invention discloses a cracking-preventing bridge structure. The cracking-preventing bridge structure comprises a concrete bridge body and a steel cylinder arranged in the concrete bridge body. The steel cylinder is rectangular and hollow, the two ends of the steel cylinder are closed, the middle of the steel cylinder is a solid, the top of the solid is provided with a water inlet hole vertically extending downwards, the side face of the solid is provided with a water outlet hole which extends horizontally and is communicated with the water inlet hole and the hollow part of the steel cylinder at the same time, the upper end of the water inlet hole is provided with a thread blocking plug, and the hollow part of the steel cylinder is filled with water. The steel cylinder is filled with water, and due to the fact that the specific heat capacity of water is large, the difference between the temperature inside concrete and the temperature outside the concrete can be reduced very well, the temperature inside the concrete and the temperature outside the concrete is made to reach the balance state as much as possible, and the concrete is effectively prevented from cracking when the difference between the temperature inside concrete inside and the temperature outside the concrete is excessively large.

The invention discloses a movable landscape fountain device, and relates to the technical field of landscape fountains. The movable landscape fountain device comprises an outer frame. A filter plate is fixedly connected between the two sides of the inner wall of the outer frame. A lead screw is rotationally connected between the bottoms of the two sides of the inner wall of the outer frame. The two sides of the surface of the lead screw are in threaded connection with movable blocks. The tops of the movable blocks are rotationally connected with an inner frame through connecting rods. The top of the inner frame penetrates the filter plate and extends to the top of the filter plate. A transverse plate is fixedly connected between the two sides of the inner wall of the inner frame. The top of the transverse plate is fixedly connected with a booster pump. The movable landscape fountain device achieves the purpose that the fountain can move, fountain display can be achieved at any time and any place, and ascending and descending of a high-pressure sprayer can be controlled. When the movable landscape fountain device is not used, the high-pressure sprayer can be stored, the high-pressure sprayer is prevented from being blocked and damaged, water can be cyclically used, resources are saved, and impurities are prevented from blocking the high-pressure sprayer.

The invention discloses an environment-friendly oxidation-imbibition method for zero flowback of shale gas well fracturing fluid and improved recovery. In this method, oxidant is added to the fracturing fluid, and after the fracturing of the gas well, the shale and the oxidizing fracturing fluid are used to oxidize the organic matter on the fracture surface or pore surface, thereby increasing the contact area between the fracturing fluid and clay minerals, and improving the shale The imbibition ability of fracturing fluid enables the fracturing fluid in the fracture to imbibe and disperse into the pores, and the fracturing fluid in the pores dissolves organic matter and disperses into the intercrystalline pores of clay minerals, realizing zero flowback of fracturing fluid. The present invention uses oxidative fracturing fluid to improve the imbibition capacity of shale reservoirs, not only increases the effective seepage channel and gas desorption-diffusion capacity, but also avoids the environmental problems induced by fracturing fluid flowback, and returns to the shale gas well after shale gas well pressure. When the drainage is put into production, the oxidant trapped in the reservoir can continuously improve the shale gas transmission channel, which is conducive to realizing the low-cost and high-efficiency development goal of shale gas wells.

The invention discloses a cleaning device of a dendrobium nobile shaking screen. The cleaning device comprises a bracket and driving rolling brushes; three-layer rail plates are arranged on the bracket; each three-layer rail plate is provided with a first driving rolling brush, a second driving rolling brush and a third driving rolling brush from the bottom up sequentially; and the third driving rolling brushes are arranged in the corresponding three-layer rail plates in an upward inclining manner. The cleaning device is simple in structure and convenient to use, and can clean a screen mesh rapidly, the working efficiency is ensured, a cleaning process is simple and rapid, and the cleaning device is high in practicability and is convenient for popularization.

The present invention belongs to the communication-related technical field, and is especially a communication management machine system device for a communication base station, including a base provided under the outer wall of the housing, and first fixing bolts penetrate through the outer walls on both sides of the base, and the base The top of the outer wall of the outer wall is installed in cooperation with the first card slot, and the first card slot is opened on the lower outer wall surface of the shell, and a plurality of temperature sensors are installed under the inside of the shell, and heat dissipation fins are installed above the temperature sensors, so A fan cover is installed above the cooling fins, and cooling fans are installed on both sides of the inside of the fan cover, a plurality of weight sensors are installed above the fan cover, and an alarm is installed on the outer upper side of the weight sensor . The present invention can fix the shell by screwing the fixing bolt through the threaded hole and the wall to be connected to the shell by setting the threaded hole, avoiding the inconvenient installation and fixing of the shell, thereby effectively improving the performance of the device. Effect.