33results about How to "Slow water flow" patented technology

The invention discloses a cavity water distribution device of a crystallizer for casting. The device comprises at least two water distribution rings, a water containing groove is formed between every two adjacent water distribution rings, each water distribution ring is provided with water holes, and the water holes in the two water distribution rings on the inner side are arranged in a staggered mode. According to the cavity water distribution device, in the primary cooling process of cast ingots, external water flow sequentially passes through the water holes in each water distribution ring from outside to inside, the water holes in the two water distribution rings on the inner side are arranged in the staggered mode, and therefore the water flow is prevented from directly impacting the surfaces of the cast ingots at high pressure through the water holes from the exterior, the speed of the water flow entering the cavity water distribution device can be lowered, the water flow can be uniform, intensive cooling is prevented from being generated on the surfaces of the cast ingots, the uniformity of primary cooling of the cast ingots is improved, and the cracking probability of the cast ingots is lowered. The invention further discloses the crystallizer comprising the cavity water distribution device for casting.

The invention discloses a processing method of nostoc commune. The processing method comprises the following steps of (1) adding water to a vortex air pump cleaning pond for soaking; (2) opening a vortex air pump for flushing, and after performing drainage, performing flushing for the second time with the vortex air pump; (3) under the condition of minus 10 to 0 DEG C, performing freezing in a refrigerating chamber, loading frozen nostoc commune in a kraft paper box, performing sealing, performing burying in loess to which diatomite is mixed, and performing purifying; (4) performing drying ina vacuum box until the water content is 18-25%; (5) loading an appropriate amount of white fused alumina powder to the kraft paper box, and burying the nostoc commune in the white fused alumina powder; (6) putting the kraft paper box in a fresh keeping cabinet with a drying agent, enabling the fresh keeping cabinet to be placed under the condition of constant temperature for 48-60 hours, and gently brushing away powder stuck to the surface of nostoc commune with a brush; and (7) performing blasting in an air box, performing drying for 12 hours, taking out the dried nostoc commune, performing cutting, and performing sorting and classifying with a sieve so as to obtain the natural nostoc commune. The condition that nutrient components of the nostoc commune do not run off is guaranteed to themaximum extent, original appearance, shape and color are maintained, and the product quality is improved.

The invention discloses a waterway noise reduction device for refrigeration equipment, which comprises a water tank, a main water outlet pipe and a main return water pipe respectively connected to the water outlet and the water inlet of the water tank, a partial pressure pipe, a water inlet ball valve for the main pipe arranged on the main water outlet pipe, and a water pump . A water pressure gauge, characterized in that: at least two ball valves are arranged on the partial pressure pipeline, and the at least two ball valves have a certain valve opening angle. A noise reduction method is also disclosed: set the set water pressure to be achieved by the water pressure gauge of the refrigeration equipment according to the user's needs; only one ball valve is installed in the measuring partial pressure pipeline and the valve opening angle when the set water pressure is reached is taken as the valve opening limit angle ; Adjust the valve opening angles of at least 2 ball valves to be greater than 0 degrees and less than the valve opening limit angle and are unequal or equal to each other; under the premise of reaching the set water pressure, select at least 2 ball valves when the noise decibel number reaches the minimum The valve opening angle is taken as the optimal valve opening angle. The invention solves the problems of frequent maintenance, poor noise reduction effect, short service life and the like.

The invention relates to the field of valves, specifically a valve that can be precisely adjusted, including a pressure roller carriage, a sealing structure, a chip removal structure, a spray structure, a valve structure, a flow rate control structure and an angle adjustment structure; the valve structure is equipped with There is a flow rate control structure for controlling the water flow velocity; the valve structure is equipped with a spray structure for spraying and cooling the formed winding pipe, and the inside of the valve structure is equipped with an angle adjustment structure for adjusting the angle of the spray structure, which is convenient. The spraying speed of the spraying structure to the pipeline is controlled by the flow rate control structure, which makes the adjustment of the water flow speed more convenient and fast, and at the same time makes the adjusted water flow rate more accurate and stable. At the same time, it is convenient to adjust the relationship between the spraying structure and the valve structure through the angle adjustment structure. The angle between them makes the spray structure adapt to pipes of different sizes, which greatly improves the cooling effect of the spray structure on the pipes and improves the forming quality of the pipes.

The invention discloses a mounting process of a steel bushing box for bridge pier bearing platform construction. The mounting process comprises the following steps of foundation pit excavation, foundation bed leveling, steel sleeve box manufacturing, steel sleeve box launching preparation, steel sleeve box launching, steel sleeve box positioning and steel sleeve box sinking. When the steel sleevebox enters water, the steel sleeve box is supported by an air bag; and then a front barge provides power, two rear winches control the sliding speed to enable the steel sleeve box to slide downwards into water from an assembly platform and a launching slide way, after launching, the steel sleeve box is dragged and positioned through eight winches, and then water is injected into a wall plate cavity of the steel sleeve box to enable the steel sleeve box to sink in place. The invention discloses the mounting process of the steel sleeve box. Under the conditions that the water flow speed is low,the water level is kept relatively stable in a construction period and a river channel is narrow, positioning and sinking of the steel sleeve box are well completed through a guide-frame-free winch positioning system in combination with the topography of a bridge area, navigation and construction operation are not affected, arrangement is reasonable and simple, the construction cost is low, and operation is convenient.

The invention relates to the technical field of kitchen sewage treatment equipment, in particular to a vortex discharge connecting device for kitchen flexible impurities and an application method. Theinvention aims to solve the technical problem that a kitchen pipeline is easily blocked. In order to solve the technical problem, the invention provides the vortex discharge connecting device for kitchen flexible impurities. The vortex discharge connecting device for kitchen flexible impurities comprises a conical head water feeding box, wherein water inlet pipes are inserted into openings formedin two sides of the conical head water feeding box, the top of the conical head water feeding box is fixedly connected to an arc angle box, a driving device is arranged in the arc angle box, a vortexmanufacturing device is arranged in the conical head water feeding box, the bottom of the driving device is fixedly connected to the top of the vortex manufacturing device, and a water outlet in thebottom of the conical head water feeding box is connected to a water inlet in the top of the conical head water feeding box through a drainage mechanism. Cone-shaped sheets in a spiral sheet providedby the invention are different in diameter to change the direction of a water flow, so that a vortex is formed. The water flow flowing through a blade and a crushed sheet arranged on the blade can crush flexible impurities.

An integrated two-stage anaerobic ammonium oxidation coupled denitrification denitrification and carbon removal device and its control operation method. The top is provided with a packing layer and a perforated mesh baffle, and the side wall of the main body is provided with a water distributor, a mud discharge port, a measuring instrument, a sampling port, a mud inlet, a return port, and an inclined anti-backflow cut-off in sequence from bottom to top. Baffles, drain pipes, exhaust pipes. The present invention controls the range of ammonia nitrogen concentration to be 160-360mg / L, the ratio of ammonia nitrogen to nitrite nitrogen is 1:0.5-0.8, and the functional flora is domesticated and cultivated in two reaction chambers with different height-to-diameter ratios. The main flora in the nitrification reaction chamber are anammox bacteria and denitrifying bacteria, the auxiliary flora is ammonia oxidizing bacteria, and the anammox bacteria are mainly in the anammox reaction chamber. The longitudinal distribution characteristics of the flora and the control of reflux It overcomes the disadvantages of low impact load resistance and unstable operation of traditional bio-coupling devices.

The invention discloses an A / O reactor capable of achieving reflux without a pump. The A / O reactor comprises an anoxic tank, an aerobic tank, and a precipitation tank. A micropore aerator is arranged on the bottom of the aerobic tank; the bottoms of the anoxic tank and the aerobic tank are communicated with each other; the bottoms of the aerobic tank and the precipitation tank are communicated with each other; the precipitation tank can be divided into a precipitation buffer area and a precipitation area, the bottoms of the precipitation buffer area and the precipitation area are communicated with each other; an inclined cover plate is arranged on the aerobic tank, the end part of the higher end of the cover plate stretches out the anoxic tank and is provided with an overflow weir slot, and a water discharge weir plate is arranged in the middle of the cover plate. The provide self-circle A / O reactor utilizes the air lifting effect during the aeration process in the aerobic tank to bring the mixed liquid in the aerobic tank back to the anoxic tank so as to achieve the circulation of mixed liquid without a pump. At the same time, the bottoms of the precipitation tank and the aerobic tank are communicated, so that the sludge in the sludge hopper will be sucked into the aerobic tank when the mixed liquid in the aerobic tank is lifted up by the gas during the aeration process, thus the sludge reflux can be achieved without a pump, the energy is saved, and the nitrogen removal efficiency is improved.