37results about How to "Guaranteed pumping effect" patented technology

The invention relates to a downward drilling hole draining device. The downward drilling hole draining device comprises a drainage system, a compressed air system and a draining system; the drainage system is formed by a drainage pipe and a control valve; the compressed air system is formed by an air injection pipe and a control valve; the draining system is formed by a draining pipe and a control valve. According to the downward drilling hole draining device which aims at solving the problem of water accumulation of a drilling hole, the water accumulation of the downward layer-penetrating drilling hole can be drained under the condition that drainage is stopped or not stopped and accordingly the drainage effect can be ensured.

The invention discloses a method and a device for determining a reasonable mining position of a high position roadway. The determination method is characterized by comprising the following steps of: determining the height of a caving zone and the range of a crack zone in a goaf; selecting an appropriate stratum of the high position roadway in the middle and lower part of the crack zone, and satisfying the following formula: Hz=Hm+Delta Hm, Hm < Hz < H1, wherein Hz is the stratum height of the high position roadway, m; Hm is the height of the high position roadway, m; Delta Hm is the height preventing high extraction roadway from destroying safety, and takes 1 to 1.5 times of the mining height, m; Hl is the height of crack zone, m.

The invention discloses a high-rate quick-setting mining hole sealing material and a using method thereof, and belongs to mining hole sealing materials. The hole sealing material is prepared from thefollowing raw materials in percentage by mass: 10%-30% of quick-setting powder, 60%-80% of Portland cement, 1%-6% of bentonite, 0.3%-0.5% of sodium chloride, 0.1%-0.3% of sodium aluminate, 3%-8% of quick lime, 0.05%-0.2% of a water reducing agent and 0.05%-0.2% of an active agent through even stirring according to the mass ratio of 1: 1.6-2. The hole sealing material is high in multiplying power and short in setting time, the expansion multiplying power ranges from 10% to 100%, the final setting time is shorter than 120 min, the compressive strength and the setting time are not affected whilethe multiplying power is improved, the strength and the setting time of gas extraction are met, and the long-term effect of hole sealing is guaranteed. Due to the high-expansion property of the hole sealing material, the pipe wall is filled with the hole sealing material, gas leakage caused by pores is avoided, the safety performance is improved, materials are saved for extraction pipes with the same length, and the gas extraction cost is reduced. The hole sealing material has the advantages of low price, no toxicity, no pollution, high hole sealing efficiency, favorable flowability and favorable plasticity.

The invention discloses an irrigation device used for energy saving type agricultural production. The irrigation device comprises a base, wherein the top end of the base is fixedly connected with a box body; a water collection mechanism is fixedly connected in the box body and comprises a water collection groove, a water tank, a flow guide plate, sliding chutes, sliding blocks, a filtering plate,a collection groove, a slag discharging hole, a water inlet and a filter screen; the top end of the box body is provided with the water collection groove; the edge side position of the inner wall of the water collection groove is fixedly connected with the water tank; and the top end of the water tank is fixedly connected with the flow guide plate. The irrigation device has a scientific and reasonable structure and can be safely and conveniently used. The irrigation device is provided with the water collection mechanism, rainwater is collected through the water collection groove, and water isprevented from accumulating on the top end of the water tank through the flow guide plate so as to improve the use efficiency of water resources and avoid waste. Through the filtering plate, large impurities in the rainwater are filtered and are intensively collected through the collection tank, and the filtering plate can conveniently slide out through the cooperation of the sliding chutes and the sliding blocks so as to be convenient to clean large impurities in the collection tank.

The invention relates to a method for preparing a heat-insulation pipe by films. Through the bag-type films, a heat-insulating material does not directly contact with inner containers of an upper mold and a lower mold so that in mold opening, the inner containers can be separated from the heat-insulating material well and thus the heat-insulating material is protected from damage and the bag-type film can well cover the whole heat-insulating layer surface. A vacuum-pumping assembly is used for air exhaust from a through hole so that the bag-type films are respectively adsorbed on the inner walls of the inner containers of the upper mold and the lower mold under the action of negative pressure and thus the films tightly cling to the inner walls of the inner containers, and in liquid heat-insulating material injection, the films do not wrinkle because of heat-insulating material adhesion to the films and surface thickness of the heat-insulating material is more uniform.

The invention discloses a coal bed gas drainage and gas recovery device, which can greatly improve the efficiency of water pumping, ensure the reliable operation of a water pump, and when the water ispumped in a prior mode, too low water level can cause damage to the water pump, and meanwhile, the water in an extraction hole can be extracted neatly, that the extraction hole is in a state of no water or low water level is always guaranteed to ensure the effect and efficiency air exhaust. According to the invention, when the drainage is performed, the water is collected into a secondary water storage barrel by using a rotary lifting mode, and then the water in the secondary water storage barrel is collected to a primary water storage barrel, so that the drainage is performed through a drainage pump, while the drainage efficiency is improved, the operation time of the drainage pump with large power is reduced, the reliability is ensured, and meanwhile, the drainage efficiency and drainage degree in the extraction hole can be ensured.

The invention relates to an air exhaust device for a starch packaging machine, belonging to the field of equipment for packaging starch. The air exhaust device comprises a filter element which is connected with a lifting mechanism; and an inner cavity of the filter element is connected with a vacuum extract device through a main pipeline which is provided with a valve. The filter element and the vacuum extract device of the pipeline connected with the filter element can ensure that air in bags can be exhausted; after the air is exhausted, the density of materials in packaging bags becomes greater, the packaging bags are firm, the bag stacking is convenient and the stacker scattering is not easy to generate; meanwhile, after the material density becomes greater, the packager volume becomes smaller and consumed packaging materials also become smaller, thereby greatly saving the cost; and after the materials become firm, in the process of loading, unloading and transporting, the package bags are not broken easily and does not leak dust, thereby ensuring that the net weight is more accurate and the carrying environment can be improved, therefore, the technical scheme can bring favorable economic benefit and environment-friendly effect and provide the guarantee for personnel safety and site safety.

The invention discloses a reverse gravel throwing device and method. A gravel throwing valve body comprises an adapter, a lower branch pipe, a gravel non-return cover plate and a reset element; the top end of the adapter is used for being connected to a built-in filter, the bottom end of the adapter is in sealed connection with the top end of the lower branch pipe, the gravel non-return cover plate is movably connected to a port of the bottom end of the adapter, sand setting holes capable of preventing gravel from passing through are formed in the gravel non-return cover plate, the reset element can provide reset force to enable the gravel non-return cover plate to keep blocking the port of the bottom end of the adapter, and a flow guide groove is formed in the bottom end of the lower branch pipe; and the top end of a connector body is used for being in sealed connection with a gravel throwing pipe, the bottom end of the connector body is connected to a pushing rod, and when the bottom end of the connector body is inserted into the adapter and is in sealed connection with the adapter, the pushing rod can overcome the reset force of the reset element to push and open the gravel non-return cover plate. According to the reverse gravel throwing device and method, the gravel does not flow back, the gravel non-return cover plate does not rebound due to the change of water flow, the gravel throwing effect is ensured, settled sand can be prevented from being accumulated in the built-in filter, the pumping and injecting effect is ensured, and the well washing cost is reduced.

The invention relates to a semiautomatic sunflower turning machine. The semiautomatic sunflower turning machine comprises a rack, a sheet positioning device arranged on the rack and a turning device arranged on the rack for turning sheets, wherein the turning device is positioned above the sheet positioning device; the sheet positioning device comprises a positioning molding board arranged on therack for placing the sheet, and a fixing pressing plate detachably connected onto the positioning molding board for fixing the sheet; a plurality of placing slots adaptive to the sheet in shape are formed in the upper end surface of the positioning molding board; processing slots adaptive to the placing slots in shape are correspondingly formed in the fixing pressing plate; and the area of the processing slots is smaller than that of the placing slots. The semiautomatic sunflower turning machine has the effect of improving jewelry processing efficiency.

The quick-disassembly type plastic suction mold comprises a bottom box, a plastic suction mold body, a suction hole and a suction pipe, a base plate is fixedly mounted at the top of the bottom box, a top sleeve is fixedly mounted at the output end of the top of a servo motor, the outer side of the top end of the top sleeve is attached to the inner wall of a track window, and a vertical threaded rod penetrates through a hole formed in a mounting plate. A horizontal adjusting mechanism is arranged on the outer side wall of the mounting plate, a clamping plate is welded and fixed to the top end of the vertical threaded rod, the clamping plate is attached to the inner wall of a positioning clamping groove, and the positioning clamping groove is formed in the bottom face of the plastic suction mold body. According to the quick release type plastic suction mold, novel structural design is adopted, it can be guaranteed that connection between the plastic suction mold and the mounting base is tight and free of air leakage, operation is convenient and fast, the locking structure at the bottom can be controlled and driven from the side to move quickly, it is guaranteed that the plastic suction mold can be positioned and locked quickly and can also be unlocked quickly, and the plastic suction mold is convenient to disassemble and assemble. And quick disassembly and replacement of the plastic suction mold are facilitated.

The invention relates to the technical field of metallurgical coking, in particular to a vacuum system and process for a three-mixed fraction vacuum tar distillation tower. The system comprises a reflux tank, a vacuum catcher and a vacuum cooler; the reflux tank is divided into a first chamber and a second chamber which are independent by a partition plate, the second chamber is directly connected with the vacuum catcher, the first chamber and the second chamber are connected with the vacuum cooler through pipelines, and the vacuum catcher is connected with the vacuum cooler and a diffusing system through pipelines; the tower top of the vacuum tar distillation tower is connected with the first chamber through a pipeline, the first chamber and the second chamber are connected with the reflux pump through pipelines, and the reflux pump is connected with the tower top of the vacuum tar distillation tower through a pipeline. The content of condensed oil gas similar to wash oil in vacuum air is reduced, the quality of the vacuum circulating liquid wash oil is guaranteed, the operation time is prolonged, and the replacement period is shortened; the temperature of vacuum air entering the liquid ring type vacuum pump is reduced, the normal air pumping capacity of the liquid ring type vacuum pump is guaranteed, and the situation that the air pumping capacity of the vacuum pump is reduced due to too high temperature of the entering vacuum air is avoided.