31results about How to "Reduce pipe clogging" patented technology

Agricultural implements are used to transport material, such as inputs in the form of fertilizer, seed, treatment, or some combination thereof, to row units that apply the material to an area of a field. Metering systems can aid in metering and providing a desired amount of material, such as on-demand, to the row units. The metering systems move the metered material to the row units, such as with pneumatics or other fluids. The metering system can be improved by having primary and secondary nozzles of different sizes, which aid in increasing the speed of the fluid moving the material towards the row units. For example, a smaller diameter for the secondary nozzle will provide improved suction and air speed.

The invention discloses an economical and environment-friendly shotcrete for tunnels, which comprises the following raw materials in parts by weight: 400-500 parts of cement, 550-650 parts of river sand, 550-650 parts of stone chips, 400-500 parts of small stones, and 220-220 parts of water. 250 parts, 3.8-5.7 parts of water reducing agent, 1.4-9.4 parts of rebound control agent, 23-56 parts of quick-setting agent; among them, the particle size of small stones is less than 11mm, and the particle size of stone chips is less than 6mm. RC430 admixture produced by Shibo Chemical Materials Co., Ltd. The invention increases the content of the fine aggregate so that it has enough slurry to wrap the aggregate, thereby improving the compactness of the concrete, ensuring the strength of the concrete, and simultaneously improving the workability of the concrete. The invention also discloses a related construction process, which can reduce environmental pollution caused by waste slag, reduce production costs, and meet the requirements of high efficiency and low carbon in the construction industry.

The invention discloses a gypsum-based self-leveling mortar that can be pumped. In parts by weight, it comprises the following components: 400-750 parts of hemihydrate gypsum; 1-15 parts of cement; 420-550 parts of aggregate; 10-40 parts of fly ash; 0.01-10 parts of polycarboxylate water reducing agent; 0.05-0.5 parts of dispersant; 0.5-2.5 parts of retarder; 0.5-5 parts of modified organic microcapsules; 250-300 parts of water. The invention also discloses a preparation method of the gypsum-based self-leveling mortar. The mortar provided by the invention does not soak in water, has good fluidity, and can be pumped; the invention also adds organic microcapsules modified by silica sol to the matrix, which effectively improves the drag-reducing and sand-carrying ability of the freshly mixed slurry and reduces blockage. tube phenomenon occurs.

The invention provides a concentrated-acid hydrolysis technology. The concentrated-acid hydrolysis technology includes the steps that after hydrolysis raw materials of dimethyldichlorosilane and saturated concentrated hydrochloric acid are reacted in a static mixer, the obtained gas-liquid mixture enters a gas-liquid separation tank A, gas recovered out of the top of the gas-liquid separation tank A, carried dimethyldichlorosilane and carried hydrolysate liquid drops enter a venturi mixer from the side face, the gas-liquid mixture deeply mixed in a main concentrated-hydrochloric-acid fluid enters a gas-liquid separation tank B, concentrated hydrochloric acid recovered out of the bottom of the gas-liquid separation tank B is returned to the venturi mixer through a material pump, the gas recovered out of the top sequentially enters a primary condenser and a secondary condenser, gas-liquid mixture condensed by the primary condenser and the secondary condenser enters a collecting device to collect liquid drops, and after the liquid drops are removed through a demister, the product is delivered to a chloromethane synthesis working section through a buffering tank. By means of the concentrated-acid hydrolysis technology, in the concentrated-acid hydrolysis process, the insufficient reacting problem, the low efficiency problem and the like caused when materials are unevenly mixed are solved, and meanwhile the problems that as gas and liquid are carried, a pipe and a device are blocked are solved.

The invention discloses a central heating and temperature control system for a PU shoe sole casting production line. The system comprises a computer control cabinet and raw material drying ovens, a heating heat insulation box is arranged on the raw material drying ovens, a feed barrel is arranged in a cavity of the heating heat insulation box, heating boards are arranged at the bottom of the cavity of the heating heat insulation box, a speed regulating motor drives a metering pump to conveying feed liquid in the feed barrel to a temperature control box, a mixing casting head is arranged at a discharging outlet of the temperature control box, the temperature control box and the speed regulating motor are electrically connected with the computer control cabinet, a sliding support is arranged at the upper end of the heating heat insulation box and provided with a rotary valve, and the temperature control box is connected with the rotary valve. A pipeline of the central heating heat insulation system is much shortened than that of the traditional mode, and part of the pipeline is located in the heat insulation box. The feed pipeline of the mode is not provided with heating wires and heat insulation layers, use is convenient, and the pipe blocking phenomenon is reduced. Meanwhile, the raw material drying ovens are arranged at the lower portion of a casting molding machine to be concentrated, and by the adoption of the central heating heat insulation mode, energy consumption is reduced obviously.

The invention relates to a pump concrete ball blowing pipe and a use method thereof. The pump concrete ball blowing pipe is a section of tee type pipeline which is connected with a concrete delivery pump pipe through a ring-shaped buckle and comprises a straight pipe for conveying concrete and a branch pipe which is branched out from the straight pipe and used for allowing a sponge ball to enter, wherein a clamping groove used for being matched with ring-shaped buckle connection is formed in each of an input port and an output port of the straight pipe and the outer wall of a pipe port of the branch pipe; the pipe port of the branch pipe is connected with a plug-in type ball-blowing cap through the ring-shaped buckle; a bolt hole provided with inner threads is formed in the end head of the ball-blowing cap; and a plugging bolt is arranged in the bolt hole of the ball-blowing cap. The pump concrete ball blowing pipe is simple in structure and convenient to use, and can be connected to any position of a concrete conveying pump pipeline, so that the concrete conveying pipe is convenient and fast to clean, the possibility of blocking of the concrete conveying pump pipe is greatly reduced, and the work quality and the work efficiency are ensured; therefore, the pump concrete ball blowing pipe and the use method thereof can be widely applied to cleaning of the concrete conveying pump pipe.

The invention relates to a biogas desulfurization and deodorization device and method, belonging to the technical field of chemical industry. The biogas desulfurization and deodorization device of the present invention includes a fan, a rich liquid pipeline, a circulation pump, a fan, an absorption regeneration tower, a back pressure valve, a filter, and a pressure controller. The absorption regeneration tower includes an absorption chamber and a regeneration chamber, The absorption chamber and the regeneration chamber are separated by a partition, and an overflow hole is arranged on the partition; the fan communicates with the air inlet of the absorption chamber, and the liquid outlet of the absorption chamber communicates with the regeneration chamber. The liquid inlet of the chamber is connected through the rich liquid pipeline, and a circulation pump is arranged on the rich liquid pipeline; a back pressure valve is set at the exhaust port of the regeneration chamber, and the pressure controller is connected with the back pressure valve and the absorption chamber ; A barrier partition is set between the air inlet of the regeneration chamber and the overflow hole, and the fan communicates with the air inlet of the regeneration chamber; at least one suction port is arranged on the side wall of the regeneration chamber. The device of the invention can continuously perform desulfurization production.