41results about How to "Avoid spill contamination" patented technology

The invention relates to the technical field of shield construction muck treatment, in particular to a shield construction muck treatment system and method. The muck generated by shield construction is crushed and stirred by a crushing and stirring device and then enters a primary-stage double-layer vibrating screen, oversize products are discharged out of the system, undersize products enter a sieve cone tank, the sieve cone tank is connected with a swirler through a pump, an intermediate tank is connected to an overflow port of the swirler, a discharge port of the intermediate tank is connected to an overflow tank through a pipeline, the slurry in the overflow tank is pumped to a flocculation tower through a pump, the flocculation tower is connected with an automatic dosing device, a flocculation medicament is pumped into the flocculation tower, the slurry in the flocculation tower is pumped to a filter press through a pump, drying mud cake treatment is carried out through the filterpress, the treated clear water flows into a clear water tank for reutilization, the dried mud cake is discharged out of the system, so that classified solid-liquid separation of different particle size components and water in the shield muck is realized, reutilization of inorganic raw materials and water resources of the shield muck is formed, and huge economic benefits are generated while the social resources are saved.

The invention provides a polyethylene (PE) film and a preparation method thereof. The PE film sequentially comprises a composite layer, an intermediate layer and a heat-seal layer, wherein the composite layer comprises 25 to 40 weight percent of low-density PE, 25 to 40 weight percent of linear low-density PE and 33 to 45 weight percent of modified metallocene linear low-density PE; the intermediate layer comprises 25 to 50 weight percent of the low-density PE and 50 to 75 weight percent of the linear low-density PE; and the heat-seal layer comprises 28 to 35 weight percent of the low-density PE and 65 to 72 weight percent of the linear low-density PE. The invention also provides a cleaning solution packaging composite film and a cleaning solution packaging bag, wherein the cleaning solution packaging composite film is prepared from the PE film. Correspondingly, the invention also provides a preparation method of the cleaning solution packaging composite film which is prepared from the PE film. A product is packaged by the PE film provided by the invention, so the packaging bag has certain solvent resistance and excellent heat-seal performance, the relatively high sealing property and tensile strength of a material subjected to heat sealing are guaranteed, and the leakage resistance and falling resistance of the composite film which is prepared by the material are further improved.

The invention discloses an injector, and belongs to the technical field of medical instruments. The injector comprises a syringe and a syringe needle connecting part arranged at the end of the syringe. A piston assembly is arranged in the syringe, and comprises a hollow push rod, a piston plate is arranged at the end, close to the syringe needle connecting part, of the push rod, a liquid storage barrel is arranged in the push rod, the open end of the liquid storage barrel is fixedly connected with the piston plate, and a through hole penetrates through the piston plate. A one-way valve is arranged at the end, close to the syringe needle connecting part, of the through hole, the piston plate is sleeved with a rubber sleeve, a cutting joint penetrates through the rubber sleeve below the one-way valve, and a baffle for extruding a liquid storage bottle is arranged at the end, away from the syringe needle connecting part, of the syringe. According to the injector, liquid medicine is storedin the push rod, the push rod is pulled to complete liquid medicine loading work during use, the advantages of being fast in liquid medicine loading, preventing a syringe needle from being contaminated when passing through a medicine bottle and being easy and convenient to operate are achieved, the medicine bottle can be prevented from being abandoned all around, and influence on the environmentis avoided.

The invention relates to the field of automobile brake disc assembly, in particular to automatic press fitting equipment for an automobile brake disc bearing. The automatic press fitting equipment comprises a press fitting mechanism, a rotary positioning mechanism, a rotary operating table and an automatic control system. The press fitting mechanism and the rotary positioning mechanism are mounted on the rotary operating table, and the press fitting mechanism is positioned above the rotary positioning mechanism and comprises a press fitting cylinder, a press fitting head and an air-oil boosting power system. The air-oil boosting power system is connected with the press fitting cylinder to provide a power source, the press fitting head is mounted on a piston rod of the press fitting cylinder, and the press fitting mechanism and the rotary positioning mechanism are both controlled by the automatic control system. By the aid of the automatic press fitting equipment, labor intensity can be relieved for workers, production efficiency is improved, the requirements on mounting quality of parallelism, perpendicularity, press fitting moment of force and the like after mounting of the brake disc bearing can be met, the equipment is small in occupied area, and leakage pollution can be avoided.

The invention discloses a deodorization, oxygen supply, heat collection and thermal insulation system for totally-enclosed sludge roller fertilizer making equipment. The deodorization, oxygen supply, heat collection and thermal insulation system is characterized by comprising an air inlet electric valve, an oxygen supply fan, a central controller, a cyclone deduster, a biological deodorizer, a temperature sensing probe, an oxygen concentration sensing probe, a sludge fermentation roller variable-frequency transmission motor, and a solar fermentation shed, wherein a signal receiving end of the central controller wireless receives monitoring data of the temperature sensing probe and the oxygen concentration sensing probe; and a control signal output end of the central controller is connected with the air inlet electric valve, a discharge electric valve, the oxygen supply fan and the variable-frequency transmission motor of a sludge roller fermentation device. The environment-friendly control of the sludge roller fermentation device is organically combined with process factors such as temperature control, oxygen supply, drying, heat absorption, thermal insulation and the like, odor and dust pollution generated in the sludge composting fermentation process are obviously reduced, work efficiency is improved and the system has high practicability and great marketing value.

The invention provides a phase change heat storage type heat supply system and a control method thereof. The phase change heat storage type heat supply system comprises a refrigerant circulation loopand a water circulation loop, wherein the refrigerant circulation loop is provided with a compressor, a first heat exchanger, a throttling device and a second heat exchanger; the water circulation loop is provided with a heat accumulator and a second heat exchanger; the refrigerant circulation loop and the water circulation loop carry out heat exchange at the second heat exchanger; and the first end of a partial pipeline where the heat accumulator is located also communicates with a cold water inlet through a first water pipeline, and the second end of the partial pipeline where the heat accumulator is located also communicates with a hot water outlet through a second water pipeline. A refrigerant system and a water system of a phase change heat storage water heater can be effectively separated, the heat supply and release efficiency of the heat accumulator can be effectively improved, and the energy efficiency of the system is improved. In addition, refrigerants can also be effectively prevented from being leaked and polluting the water system, and heat storage and user heat supply can be guaranteed at the same time.

The invention discloses a linear transmission part with a lubricating oil recovery module. The linear transmission part comprises a moving body, a first oil core, an oil tank, a second oil core and a third oil core, wherein the moving body is provided with an accommodation chamber; the first oil core is arranged in the moving body and the accommodation chamber in a penetrating manner, and is provided with a first oil suction section and a first oil outlet section; the oil tank is arranged on the moving body, and is provided with an oil chamber for storing lubricating oil; the second oil core is arranged on the oil tank, and is provided with a second oil suction section and a second oil outlet section; the second oil suction section extends into the oil chamber, and contacts with the lubricating oil; the second oil outlet section reaches the accommodation chamber; the third oil core is provided with a third oil suction section and a third oil outlet section; the third oil suction section reaches the accommodation chamber; and the third oil outlet section does not contact with the lubricating oil. Therefore, the third oil suction section continuously absorbs the lubricating oil to prevent the lubricating oil from overflowing and polluting a linear part.

The invention discloses full-color electronic paper and a manufacturing method thereof, and belongs to the technical field of full-color electronic paper.A layer of material capable of being patterned is coated on a back plate, and at least one pixel unit is manufactured on the material capable of being patterned; barrier layers are arranged at two ends of any two of the red pixel region, the green pixel region and the blue pixel region; the cover plate is attached to the back plate, so that the two regions, provided with the barrier layers, in the red pixel region, the green pixel region and the blue pixel region are in a closed state, and the other region is in an open state; the corresponding turbid liquid is poured into the area in the open state, and after pouring is completed, curing treatment is conducted on the two ends of the area; sequentially eliminating the barrier layers arranged at the two ends of the two areas in the closed state; reflection and penetration of light can be effectively improved, control is simple, the refreshing speed is increased, gray scale use is supported, and display colors are rich.

The invention belongs to the field of water-processing materials, and relates to a preparation method of an aluminium oxide composite material for enriching ruthenium ion in mine-tailing wastewater. The provided preparation method comprises filling holes of ammoniated corn straws with modified aluminum oxide. The concrete technology comprises cleaning corn straws, ammoniating, modifying aluminium oxide, and preparing the composite material. Compared with corn straws, the composite material substantially improves in ruthenium ion saturation enrichment amount, and also overflow pollution of corn straw organic carbon during water processing is avoided. The prepared composite material improves the ruthenium ion enrichment amount to 144.1 mg / g, is applicable to mine-tailing ruthenium-containing wastewater, and possesses extensive market prospect.

The invention discloses an ammonia gas jetting amount control method based on an SCR system. The ammonia gas jetting amount control method based on the SCR system comprises the steps that the model conversion efficiency of nitric oxides NOx is obtained according to ammonia gas NH3 stored in the SCR system; the target conversion efficiency of the nitric oxides NOx is obtained according to the flowof the nitric oxides NOx on the air inlet side of the SCR system; the actual conversion efficiency of the nitric oxides NOx is obtained; the efficiency deviation is obtained according to the actual conversion efficiency and the target conversion efficiency; sum calculation is conducted on the model conversion efficiency and the efficiency deviation to obtain the demand conversion efficiency; and the demand jetting amount of the ammonia gas NH3 is obtained according to the demand conversion efficiency. According to the ammonia gas jetting amount control method based on the SCR system, the target conversion efficiency capable of balancing emission of the nitric oxides NOx and the leakage amount of the ammonia gas NH3 is proposed, efficiency compensation is conducted on the model conversion efficiency through the deviation efficiency between the target conversion efficiency and the actual conversion efficiency, therefore, precise control over the demand jetting amount of the ammonia gas NH3 is achieved, and the problem of leakage pollution generated due to the fact that the ammonia gas NH3 jetting amount is too high is avoided.

The invention discloses equipment used in a process for recovering organic matters in hydrogen chloride gas. The equipment includes a tail gas absorption device, and a prompting device is arranged atthe bottom on the left side of the tail gas absorption device; by a fluid infusion device, the equipment can achieve automatic supplementation of absorption liquid, a collection device collects wasteabsorption liquid and performs real-time monitoring of the collection amount, cooperation of the collection device and the prompting device can alert workers to transfer of the waste absorption liquid, thus ensuring timely transfer of the waste absorption liquid and preventing excessive waste absorption liquid from overflowing and polluting the environment, and through coordination of a liquid storage device, a flow guide device and a liquid change device, the equipment can achieve replacement of the absorption liquid without stop, thus guaranteeing continuous work of the equipment, improvingthe tail gas treatment efficiency, providing guarantee for high-efficiency production of methane chloride, and improving the practicability of the equipment used by the process for recovering organicmatters in hydrogen chloride gas.

Disclosed is a rail type spiral automatic tensioning device. The rail type spiral automatic tensioning device comprises a tensioning vehicle, a guide rail, a lead screw, a speed reducer, a motor and an electric control cabinet. The tensioning vehicle is arranged in the guide rail, a roller which is used for conducting tensioning on a rubber belt is fixedly connected with the upper portion of the tensioning vehicle, and a lead screw nut which is connected with the lead screw in a threaded mode is arranged on the bottom surface of the tensioning vehicle. The input end and the output end of the speed reducer are connected with the motor and the lead screw through couplings, a power line of the motor is connected with the interior of the electric control cabinet, and an external power source is arranged in the electric control cabinet. According to the rail type spiral automatic tensioning device, the floor type arrangement is adopted by the guide rail, and therefore the integral rigidity of the device is improved, and the rail type spiral automatic tensioning device is particularly suitable for large-stroke tensioning working conditions.

The invention discloses a fermentation device for canned food preparation. The fermentation device comprises a tank, a heat preservation tank is arranged in the inner cavity of the tank, a gap is formed between the tank and the heat preservation tank, the gap is filled with a liquid, the top of the heat preservation tank is provided with a tank opening, a top cover covers the heat preservation tank so that a seal tank is formed, the top cover is provided with a motor, a stirring shaft is arranged in the inner cavity of a heating tank, the stirring shaft is provided with stirring blades, a rotating shaft of the motor passes through the top cover and is drive-connected to the stirring shaft, the shaft center of the stirring shaft is provided with a through hole and two sides of the stirringshaft in the heat preservation tank are provided with gas vents at uniform intervals. The fermentation device easily produces, is easy to use, dismount and clean and realizes full and uniform fermentation.

The invention provides a standardized discharge treatment device for high concentration VOCs tail gas based on condensing catalytic oxidation, belongs to the technical field of organic exhaust gas treatment, and in particular relates to a recovery government device for high concentration VOCs tail gas discharged in processes or reaction kettle processes such as petroleum chemical engineering, finechemical engineering, pharmaceutical manufacturing and resin production. The device is formed by a condensing system and a catalytic oxidization system as well as pipelines and valves connected between the systems. The device can avoid problems and risks in evaporative condensation, solves the problem that organic exhaust gas which is condensed independently is hard to discharge in a standardizedmanner, and also can solve the problem that the operating energy consumption is high in the exhaust gas treatment process by a combined process effectively. The device is efficient, energy-saving, reliable and good in economical benefit, and the treatment efficiency can reach over 99.9%.

The invention discloses a multi-functional forceps for laparoscopic appendectomy, which mainly comprises a clamping jaw, a connecting rod and a handle portion. A screw thread is arranged in the clamping jaw, the friction force can be increased to clamp an appendix tightly, and the operation is finished; jaw teeth are connected with the high-frequency electric knife host through a wire harness in the connecting rod, and can electrically cut or be electrically connected with the root of the appendix; after the jaws are combined, the sealing performance is good, and after the appendix is separated from the appendix residue end, the appendix is taken out by an laparoscope sleeve directly through the multi-functional forceps for laparoscopic appendectomy, so that the pollutants in the appendixcan be prevented from leaking into the abdominal cavity, and the risk of abdominal infection is reduced; the length of an jaw head is fixed and the jaw head is the medical insulating material, and thelength of the appendix residue end is suitable , and the cecal wall of the ileocecus is protected from being damaged by an electric knife; The clamping jaw is provided with two layers, the outer layer is made of a medical insulating material, the inner layer is made of a conductive material, and other organs cannot be damaged by mistake during operation.

The invention belongs to the field of water treatment materials and relates to a preparation method of a wheat straw and hydrotalcite composite material capable of adsorbing cobalt ions in electroplating water. Modified hydrotalcite is composited to pore channels of ammoniated straw, and the preparation method comprises specific processes as follows: wheat straw washing, ammoniation, hydrotalcite modification, composite material preparation and the like. The prepared wheat straw and hydrotalcite composite material has the advantages as follows: (1), hydrotalcite is immobilized to the wheat straw through epoxy resin, the characteristics of small density and large specific surface area of the wheat straw can be played, and further, the advantage that the hydrotalcite has high adsorption capacity on heavy metal cobalt ions is used; (2), compared with hydrotalcite powder, the composite material solves the problems of clustering and caking of the hydrotalcite powder and reduced cobalt ion adsorption and can solve the problem of secondary pollution caused by the fact that the hydrotalcite for adsorbing cobalt ions is difficult to recover; (3), compared with the wheat straw, the composite material increases the cobalt ion saturation adsorption quantity greatly and avoids overflow pollution of organic carbon of the wheat straw in a water treatment process. The cobalt ion adsorption quantity of the prepared composite material is increased to 498.5 mg / g, and the composite material can be applied to cobalt-containing wastewater treatment for an electroplating plant and has broad market prospects.

The wear-resistant shaft sleeve structure comprises a shaft sleeve body, the diameter of the outer periphery of the left side portion of the shaft sleeve body is 4 mm smaller than that of the outer periphery of the right side portion of the shaft sleeve body, the length C of the outer periphery of the right side portion of the shaft sleeve body is 70-90 mm, and the quenching depth of the right side portion is 1-1.5 mm; an annular shoulder transition face B is arranged in the middle of the outer periphery of the shaft sleeve body, the left side and the right side of the shaft sleeve body are each internally provided with a necking hole A, the diameter phi of the two necking holes is 120 mm, the upper deviation + 0.055 mm and the lower deviation + 0.025 mm are interference fit sections, the width of the two necking holes is 20 mm, and the diameter phi of the two necking holes is 20 mm. And a section of annular machining cutter groove D with the depth of 0.5 mm is formed in the shaft sleeve body between the two necking holes, and the width of the annular machining cutter groove D is 70-90 mm.

The invention discloses an oil smoke concentration real-time online monitoring device, and relates to the technical field of oil smoke monitoring related equipment, the oil smoke concentration real-time online monitoring device comprises a detection main body and a detection probe, the bottom of the detection main body is provided with a connecting pipe, and the bottom of the detection main body is provided with a driving mechanism; the detection body is connected with a protection mechanism and a fixing mechanism through a driving mechanism, the protection mechanism and the fixing mechanism are matched with the connecting pipe and an external conveying pipe respectively, and the driving mechanism comprises a first screw and a second screw. During installation, the detection main body is placed on the oil smoke conveying pipe and is in butt joint with the connecting pipe on the outer side of the conveying pipe, and then the protection mechanism and the fixing mechanism are driven together under the action of the driving mechanism, so that the joint of the detection main body and the oil smoke conveying pipe is protected, and environmental pollution caused by leakage after long-term use is avoided; and the detection main body and the oil smoke conveying pipe are fixed, so that the installation efficiency of the equipment is greatly improved.

The invention discloses a horizontal intelligent plasma medical waste cracking measurement and control system based on the Internet of Things. Firstly, the concept of the Internet of Things is appliedto a medical waste cracking process, and an automatic system capable of intelligently obtaining information, transmitting information, processing information and applying information is constructed;then, medical wastes are treated by utilizing a horizontal plasma cracking furnace; and finally, a fault detection system is designed in a data monitoring control system to monitor the condition of the horizontal plasma cracking furnace in real time. Compared with other medical waste methods, the risk of treated objects is high, secondary classification is not needed, and the possibility of secondary pollution is reduced; the concept of the Internet of Things is adopted, so that all parts are matched more efficiently; an automatic control system is used to reduce manpower; and a fault diagnosis system is added, so that the safety coefficient is higher.

The invention discloses a storage device for dangerous chemicals. The storage device comprises a tank body; the tank body comprises an inner tank and an outer tank; the inner tank and the outer tank are coaxially connected in a sleeved mode; gaps are formed in the middle and the lower end; the gap in the lower end is coaxially and fixedly connected with a scraper device; the scraper device comprises a cylindrical block; the right end in the cylindrical block is fixedly connected with a spraying device; the spraying device comprises an outer pipe, an air inlet, an air pipe, a circular pipe, anair outlet pipe, a transverse plate, a horn mouth and a circular hole; the bottom end in the outer pipe is coaxially and fixedly connected with the air inlet; one end of the air pipe is inserted in the lower end of the air inlet; the other end of the air pipe is connected with a motor box; the outer circle of the upper end of the air inlet of the outer pipe is coaxially and fixedly connected withthe circular pipe; the two ends of the circular pipe are fixedly connected with supporting frames; and protection devices are arranged at the upper end and the lower end of the outer tank. During regular maintenance and inspection, the spraying device can be started, an aerostatic press in the motor box can drive compressed air to enter the outer pipe through the air pipe, a stabilizer is stored in the outer pipe, is crushed and atomized through the transverse plate along with compressed air flow, is emitted around the inner tank through the horn mouth and reacts with the leaked chemicals.

The invention provides an overturning dumping device and system for tar residues and relates to the technical field of tar disposal. The overturning dumping device for the tar residues comprises a support, a transferring tank and a rotating assembly. The support comprises a first support rod and a second support rod. The two ends of the transferring tank are provided with rotating shafts. The rotating shafts are detachably connected with the first support rod and the second support rod in a sliding manner. The transferring tank is selectively overturned relative to the support. The rotating assembly comprises a bearing and an electric push rod, wherein the electric push rod is used for driving the bearing to rotate. The bearing is connected with the corresponding rotating shaft of the transferring tank and used for driving the transferring tank to be overturned. The overturning dumping device is simple in structure and flexible to operate; human assistance is not needed; the dumping speed of the tar residues is controllable; and the production need is met.

The invention discloses a medicine chopping machine for processing traditional Chinese medicine for filling capsules, and relates to the technical field of traditional Chinese medicine processing, in particular to the medicine chopping machine for processing traditional Chinese medicine for filling the capsules. A second rack is fixedly mounted on the inner side of a supporting frame and located below a first rack, first rotating shafts are rotationally connected to the two sides of an inner cavity of the first rack, and a second rotating shaft is rotationally connected to the inner cavity of the first rack. According to the reciprocating type medicine chopping machine for processing the traditional Chinese medicine decoction pieces, a drying mechanism, an exhaust fan and a baking lamp are used in cooperation, the baking lamp and the exhaust fan are installed through the drying mechanism, when water exists on the surfaces of some medicinal materials, the water is baked through the baking lamp, the medicinal materials are drier, and meanwhile water vapor can be discharged through the exhaust fan, so that the processing quality of medicinal materials is improved, and meanwhile water leakage pollution is avoided.

The invention belongs to the field of water treatment materials, and relates to a method for preparing a sorghum straw kaolin composite material that absorbs tin ions in electroplating wastewater. The preparation method proposed by the invention is to compound the modified kaolin into the pores of the ammoniated sorghum stalks, and the specific process includes cleaning the sorghum stalks, ammoniating, modifying the kaolin and preparing composite materials. Compared with sorghum straw, the composite material greatly increases the saturated adsorption capacity of tin ions, and can avoid the overflow pollution of sorghum straw organic carbon in the water treatment process. The composite material prepared by the invention increases the adsorption capacity of tin ions to 165.3 mg / g, can be used for treating tin-containing wastewater in electroplating plants, and has broad market prospects.

The invention belongs to the field of composite materials, and relates to a preparation method for a sulfonated coal composite material capable of enriching lanthanum ions in tailing wastewater. The preparation method comprises the step that modified sulfonated coal is composited into hole channels of ammoniated sunflower stalks and comprises the specific processes of sunflower stalk washing, ammoniating, sulfonated coal modifying, composite material preparing and the like. Compared with the sunflower stalks, the composite material has the advantages that the saturated enriching quantity of the lanthanum ions is significantly increased, and overflowing pollution of sunflower stalk organic carbon in the water treating process can be avoided. The prepared composite material increases the enriching quantity of the lanthanum ions to 91.9 mg / g, can be applied to lanthanum-containing tailing wastewater treatment and is wide in market prospect.