43results about How to "Short spray distance" patented technology

The invention provides an atomizing spray head with adjustable blades, which includes a spray head housing, a water inlet, a swirl chamber and a water outlet are arranged in the nozzle housing, and the water inlet is connected to the swirl chamber; an isolator is arranged in the swirl chamber A plurality of twisted blades are arranged in the swirl cavity, and a twisted blade is fixedly provided with a central rotating shaft, one end of which is inserted into the isolation body, and the other end passes through the nozzle housing and is connected with an adjustment mechanism. The blade-adjustable atomizing nozzle of the present invention can adjust the atomization degree of the nozzle.

The invention discloses an in-pipe pouring device of a concrete water pipe for water supply and drainage. The in-pipe pouring device structurally comprises a telescopic pipe, a connecting platform, apouring base body, a laminating ring, a cylinder, a circular expansion connector and a semi-arc inner telescopic rod. The in-pipe pouring device has the beneficial effects that the telescopic end of the cylinder is connected with the circular expansion connector and the laminating ring, the two parts are matched so that the laminating ring is firmly attached to the pipe inner wall, and the stability of the pouring base body is improved; a plurality of injection needles are installed in a concrete injection pipe and are inserted into concrete, an air entraining agent in a storage chamber is injected into the concrete through nozzles on the injection needles, and the fluidity of the concrete is improved; and the concrete is subjected to diameter reduction by an arc petal, a pressure plate drives the nozzles to straightly extend forwards, the injection distance between the nozzles and gaps can be shortened, and the injection efficiency can be improved; and through the change of the pipe diameter, the injection flow velocity of the nozzles can be increased, so that the concrete can be injected into the narrow gaps, the gaps can be filled with the concrete, and cavities can be prevented.

The invention belongs to the field of smoke preventing and dust falling in fire fighting, and particularly relates to a water mist curtain spray head. The water mist curtain spray head comprises a first nozzle which is downwards arranged in the spray direction; a transition part is arranged between the first nozzle and an outer water pipe and is used for communicating the first nozzle with the outer water pipe. The water mist curtain spray head further comprises at least one second nozzle which is used for horizontally spraying to the left and / or the right; and the second nozzle is arranged by communicating with the outer water pipe through the transition part. By adopting the water mist curtain spray head, the problem that conventional structure brings a dead angle in spray can be effectively solved, and another problem that conventional single-nozzle structure causes fast sinking of the upper mist layer to influence personal safety can be avoided; and the water mist curtain spray head is high in safety, and reliable and stable in work.

The invention discloses a flameless combustion heat accumulating type flat flame combustion nozzle. A combustion nozzle body is internally provided with an air or smoke gas passage, a porous heat accumulator, a combustion cavity, a gas pipeline and an ignition device, wherein the tail end of the air or smoke gas passage is provided with a tangential air inlet duct positioned along the tangential direction of the circumferential combustion cavity, and the air or smoke gas passage is connected with the combustion cavity through the tangential air inlet duct; the tail end of the gas pipeline is provided with a flame combustion gas pipe and a flameless combustion gas pipe which are parallel and respectively controlled by a flame combustion control valve and a flameless combustion control valve, and the aperture of a flameless combustion gas spray orifice positioned on the tail end of the flameless combustion gas pipe is smaller than that of a flame combustion gas spray orifice positioned on the tail end of the flame combustion gas pipe. The flameless combustion heat accumulating type flat flame combustion nozzle has high energy utilization efficiency and good furnace temperature uniformity and can greatly reduce the discharge amount of NOX; fuel is sprayed at high speed through the necking spray orifice, thereby effectively controlling the flame temperature and being beneficial tothe sufficient combustion of the fuel; and in addition, the flame sprays into a furnace cavity with a very short spraying distance so as not to spray to parts inside the furnace cavity.

The invention discloses a backwashing high-pressure filter station, which belongs to the field of backwashing high-pressure filter devices for hydraulic systems of underground comprehensive mining hydraulic brackets. The backwashing high-pressure filter station comprises a machine seat (1) and a high-pressure filter (4), and is characterized in that: a rotating machine seat (11) is arranged on the upper part of the machine seat (1); an integrated valve seat device (7) is mounted through the rotating machine seat (11); the bottom of the integrated valve seat device (7) is connected with the high-pressure filter (4) and an energy storage device (3); the lower part of the high-pressure filter (4) is connected with a draining valve (2); and a waste liquid recovering device on the lower part of the draining valve (2) is connected with a recovery filter (12). The backwashing high-pressure filter station has the advantages of large flow, high precision, capability of on-line washing, obviouswashing effect, capability of recycling backwashing liquid and the like; and when the backwashing high-pressure filter station is used, the continuous production operation can be ensured, energy conservation and environment protection can be ensured and the cleanness of the working medium can be ensured effectively.