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

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 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 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.

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 relates to a urine sample detection and post-detection treatment system which comprises a urine detection system and a post-detection treatment system, the urine detection system comprises test strip sorting equipment, sample pretreatment equipment and urine sample detection equipment which are connected in sequence; the after-test treatment system comprises a liquid waste treatment system and a solid waste treatment system, the liquid waste treatment system comprises urine sample after-test treatment equipment, and the solid waste treatment system comprises test strip after-test treatment equipment and test tube after-test treatment equipment; the automatic urine monitoring system and the after-detection treatment system are organically combined together, so that various solid and liquid wastes generated in urine detection can be treated in time while urine sample detection can be efficiently treated in batches, and the leakage risk caused by untimely treatment or improper treatment of harmful substances is avoided; and the detection environment and detection personnel are protected.

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 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 belongs to the field of composite materials, and relates to a preparation method of a chalk-powder composite material for enriching rhodium ion in mine-tailing wastewater. The provided preparation method comprises filling holes of ammoniated brassica-campestris straws with modified chalk powder. The concrete technology comprises cleaning brassica-campestris straws, ammoniating, modifying chalk powder, and preparing the composite material. Compared with brassica-campestris straws, the composite material substantially improves in rhodium ion saturation enrichment amount, and overflow pollution of brassica-campestris straw organic carbon during water processing is avoided. The prepared composite material improves the rhodium ion enrichment amount to 111.7 mg / g, is applicable to process mine-tailing rhodium-containing wastewater, and is extensive in market prospect.

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 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 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 medical instruments and discloses an orbital surgical flexible tool tip positioning device for an optical navigation system. The orbital surgical flexible tool tip positioning device comprises a guide portion, a temporary storage portion and a tracing portion. The guide portion is provided with a hard needle tubing (1), and an internal thread mechanism is arranged at one end of the hard needle tubing (1); the temporary storage portion consists of a cover plate (5) and a temporary storage groove (2), an external thread mechanism matched with the internal thread mechanism of the hard needle tubing (1) is arranged at one end of the temporary storage groove (2), the hard needle tubing (1) and the temporary storage groove (2) are connected through the internal and external thread mechanisms, and the cover plate (5) and the temporary storage groove (2) are connected through a clamping groove. The tracing portion consists of reflection balls (3) and a reflection ball support (4), the reflection balls (3) and the reflection ball support (4) are in threaded connection, and the reflection ball support (4) and the temporary storage groove (2) are in threaded connection.

The invention discloses a horizontal intelligent plasma medical waste pyrolysis measurement and control system based on the internet of things. First, apply the concept of the Internet of Things to the pyrolysis process of medical waste, and construct an automatic system that can realize intelligent information acquisition, transmission, processing and effect information; then, use the horizontal plasma pyrolysis furnace to treat medical waste Finally, a fault detection system is designed in the data monitoring and control system to monitor the situation of the horizontal plasma cracking furnace in real time. Compared with other methods of medical waste, the object of the present invention is more dangerous, without secondary classification, reducing the possibility of secondary pollution; the concept of the Internet of Things is adopted to make the cooperation of various parts more efficient; the use of automatic control System, reduce labor; joined the fault diagnosis system, the safety factor is higher.