33results about How to "Prevent interpenetration" patented technology

The invention discloses an adjustable culture dish for biological medicine. The adjustable culture dish comprises a placement seat, wherein a placement groove is formed in the inner side of the placement seat; heat transfer plates are fixedly connected to two sides of the bottom of the inner walls of the placement groove; a culture dish body is arranged on the inner side of the placement groove and positioned on the tops of the heat transfer plates; a vertical rod is fixedly connected to the bottom of the inner wall of the placement groove. According to the arrangement of the placement seat, the placement groove, the heat transfer plates, the culture dish body, the vertical rod, a through hole, a rod sleeve, a partition plate, a groove, a clamping block, a movable rod, a connecting block and a compression spring, the culture dish body can be prevented from moving, and the problems that the conventional culture dish often cannot be adjusted, waste of resources is caused because anotherculture dish needs to be used while culturing different types of microbes or cells and the practicality of the culture dish is reduced are solved. The adjustable culture dish for biological medicine has the advantage of being adjustable, and is worthy of popularization.

The invention relates to the field of detection equipment. The invention discloses a temperature impact test box, which comprises a test box body, wherein a high-temperature box body, a low-temperature box body and a test basket are arranged in the test box body; a power box body is connected outside the test box body; a control system, a refrigerating system and a heating system are arranged in the power box body; a lifting device is arranged between the high-temperature box body and the low-temperature box body; an interlayer is arranged between the high-temperature box body and the low-temperature box body for separation; a through hole is formed in the interlayer; and the lifting device is arranged on the inner side wall of the through hole. The lifting device comprises a power guide assembly; the power guide assembly comprises a plurality of guide rails vertically arranged on one side face of the test basket; toothed bars are arranged on the guide rails; a driving shaft is horizontally arranged on the side wall of the through hole; a plurality of gears are fixedly arranged on the driving shaft in a sleeving mode; the gears are meshed with the toothed bars; and the driving shaft is connected with driving equipment. The temperature impact test box provided by the invention has the advantages of stable and rapid rising and falling of the lifting basket, good temperature isolation between the high-temperature box body and the low-temperature box body, and no temperature interpenetration in the lifting process.

The invention discloses an all-aluminum back-field back silver paste, a preparation method thereof, and an application thereof. The all-aluminum back-field back silver paste comprises the follow materials of, by weight, 10 to 80 parts of specially required silver powder with the purity larger than 99.99%, 0.5 to 5 parts of self-made lead-free main body glass powder, 0 to 3 parts of low-melting-point auxiliary glass powder, 1 to 50 parts of specially required low-melting-point metal powder, 15 to 50 parts of organic binders, and 0.01 to 1 part of organic auxiliary. The all-aluminum back-field back silver paste can be directly printed on an aluminum back-field paste, the considerable welding tensile force and aging tensile force of the all-aluminum back-field back silver paste are guaranteed, a serious electric leakage problem caused by a metal defect generated by the direct contact between silver and a silicon wafer is avoided, therefore, the photoelectric conversion efficiency of a crystalline silicon battery is improved, the width of a back electrode and a printed pattern can be adjusted at will, and therefore, the cost of a back electrode paste is reduced.

The invention discloses a preparation method of a P-type crystalline silicon back electrode. The preparation method of the back electrode comprises the steps: printing all-aluminum slurry on a P-type crystalline silicon back passivation layer and then printing linear intermediate layer-glass slurry on the all-aluminum slurry and finally overprinting a back silver electrode on the linear intermediate layer-glass slurry. The solar cell prepared by the method can maintain good contact with silver and aluminum without damaging the passivation layer or influencing the conductivity. A complete all-aluminum back field can be formed so as to improve the field passivation characteristic of the electrode region, reduce the carrier coincidence without silver entering the silicon substrate to generate leakage current, reduce the leakage current of the battery and improve the photoelectric conversion efficiency.

The present invention discloses a trench structure for medium and high voltage NMOS field transistor of EEPROM peripheral circuit, which is filled with boron ions. Production technique of the trench structure lies in that in current technical flows, a trench area is opened through photo-etching. In synchronization with light dope / boron implantation into high-voltage PMOS transistor, boron ions are implanted into the trench. The present invention ensures more effective field isolation, reduces unit area and improves chip integration.

The invention discloses a convenient-to-use floss pick, which comprises a body and a dental floss on the body. The body comprises a U-shaped dental floss mounting head and a handheld stick, a boostingdevice is arranged on the dental floss mounting head and comprises a fastener in clamped connection with the dental floss mounting head, a resilience part is mounted at the bottom of the fastener, afirst anti-slip plate for contacting with teeth is arranged at the top of the fastener, a protective pad is arranged at the bottom of the resilience part, a positioning rod is fixedly connected to thetop of the protective pad, and one end, away from the protective pad, of the positioning rod is inserted into a positioning hole in the bottom of the fastener. The floss pick is convenient to use andcapable of protecting dental papillae from damages caused by sudden force release of the dental floss entering tooth crevices, and the dental floss is enabled to move in the tooth crevices under theaction of resilience force and tooth occlusal force to realize tooth crevice cleaning.

The invention discloses a barrier device for concrete casting, belongs to the technical field of architectural construction, and is used for casting concrete at places such as a construction joint, apost-cast strip and a beam column core region. The barrier device comprises a support skeleton and a barrier net; the support skeleton includes multiple vertical ribs arranged at intervals; the multiple vertical ribs are connected by transverse ribs; the support skeleton can be fixedly inserted into a reinforcement skeleton in a region to be cast with concrete; and the barrier net is detachably disposed on the surface of the support skeleton. Before concrete is cast, the support skeleton is fixedly inserted in butt joint positions such as the beam column core region or post-cast strip or construction joint; then, the barrier net is fixed on the support skeleton; and the barrier net is matched with the support skeleton, so that mutual permeation of the concrete in different regions is effectively prevented, the flow direction of the concrete is controlled, and the mold moving and expanding phenomenon during casting of the concrete is prevented. The device is simple in preparation and convenient to mount, can transfer the support skeleton for use, is economical and applicable, and improves the concrete casting quality.

The present invention discloses a drawing machine of metal material. It includes driving mechanism, drawing mechanism, gear turning box body and water tank body. Said drawing mechanism includes four stepcone shafts, four transition shafts and one speed-fixing wheel axle, in the water tank body interior four stepcones and two die stands. Said invention also provides their concrete connection mode and the concrete action of the above-mentioned every portion in the drawing machine.

The invention discloses an all-aluminum back-field silver paste and its preparation method and application. The all-aluminum back-field back silver paste includes the following parts by weight: 10-80% silver powder with a purity greater than 99.99% 0.5 to 5 parts of self-made lead-free main glass powder, 0 to 3 parts of low melting point auxiliary glass powder, 1 to 50 parts of low melting point metal powder for special requirements, 15 to 50 parts of organic binder, 0.01 to 0.01 parts of organic additive 1 serving. The all-aluminum back field back silver paste can be directly printed on the aluminum back field paste, and ensure that it has considerable welding tension and aging tension, avoiding serious leakage problems caused by metal defects caused by direct contact between silver and silicon wafers, thereby Improve the photoelectric conversion efficiency of crystalline silicon cells, and can adjust the width of the back electrode and print graphics at will, thereby reducing the cost of back electrode paste.

The invention provides a simulated tile and a preparation method thereof. The tile includes a blank layer, an underglaze layer and a surface glaze layer, the underglaze layer includes penetrating ink, and the maximum depth of ink penetration is the thickness of the underglaze layer , the penetration width coincides with the grain boundary of the blank cross section, the blank layer includes at least one mud layer and at least one powder layer, the bottom layer of the ceramic tile is a mud layer, at least one side of the powder layer is connected with the mud layer touch. At the same time, it also provides the preparation process of the ceramic tile. Through the optimization and adjustment of ingredients, process steps and parameters, the depth and width of ink pigment penetration can be effectively controlled, so that the texture of the green body and the bottom glaze on the longitudinal section is highly consistent, which greatly improves the ceramic tile. At the same time, due to the unique sintering process control, there is no interpenetration layer in the green body layer, which further improves the three-dimensional effect and simulation degree of the tiles.

The invention provides an energy storage device for a hybrid excavator. An oil piston is in sealed slide connection with an oil cylinder body and divides the oil cylinder body into two independent cavities B2 and A2; a gas piston is in sealed slide connection with a cylinder block and divides the cylinder block into two independent cavities A1 and B1; the left end of a piston rod penetrates through the right side wall of the cylinder block and is fixedly connected with the right side wall of the gas piston; the right end of the piston rod penetrates through the left side wall of the oil cylinder body and is fixedly connected with the left side wall of the oil piston; the gas piston pressurizes gas in the cavity A1 when moving leftwards, when a movable arm ascends or rotates at constant speed, gas in the cavity A1 produces rightward pressure on the gas piston and pushes the oil piston to move to the right side, an action control device communicates with an energy control device, and theenergy control device communicates with the cavity A2. According to the energy storage device for the hybrid excavator, the gas piston is pushed through energy conversion between hydraulic oil and nitrogen, and energy is saved; the device effectively prevents mutual permeation of oil and gas and prevents nitrogen from permeating into a hydraulic system, and the service life of the device is prolonged.

The invention discloses a unidirectional water-permeable foamed ceramic regenerated material and a preparation method thereof, comprising a foamed ceramic layer, a porcelain stone interface layer and a porcelain particle water-permeable layer which are sequentially stacked and fired simultaneously. The invention effectively combines the water-permeable porcelain particle layer with the water-impermeable foamed ceramics. When used as a ground material, the surface is wear-resistant, water-permeable and water-conducting, and non-slip. It is the preferred material for hydrophobic and anti-slip in public places and pedestrian passages; as a wall material When in use, it has sound insulation and sound absorption, heat preservation, fire resistance and burn resistance, and can meet the multifunctional requirements of partition walls in many public places at the same time.

The invention discloses a method for preparing a P-type crystalline silicon back electrode. The preparation method of the back electrode is: printing an all-aluminum paste on the P-type crystalline silicon back passivation layer, and then printing a linear intermediate layer on the all-aluminum paste. Glass paste, and finally overprint the back silver electrode on the linear interlayer-glass paste. The solar cell prepared by this method can maintain good contact with silver and aluminum without damaging the passivation layer, and does not affect the conductivity. The present invention can form a complete all-aluminum back field, improve the field passivation characteristics of the electrode region, reduce carrier coincidence, prevent silver from entering the silicon substrate, cause no leakage, reduce battery leakage current, and improve photoelectric conversion efficiency.

The invention discloses a convenient-to-use floss pick, which comprises a body and a dental floss on the body. The body comprises a U-shaped dental floss mounting head and a handheld stick, a boostingdevice is arranged on the dental floss mounting head and comprises a fastener in clamped connection with the dental floss mounting head, a resilience part is mounted at the bottom of the fastener, afirst anti-slip plate for contacting with teeth is arranged at the top of the fastener, a protective pad is arranged at the bottom of the resilience part, a positioning rod is fixedly connected to thetop of the protective pad, and one end, away from the protective pad, of the positioning rod is inserted into a positioning hole in the bottom of the fastener. The floss pick is convenient to use andcapable of protecting dental papillae from damages caused by sudden force release of the dental floss entering tooth crevices, and the dental floss is enabled to move in the tooth crevices under theaction of resilience force and tooth occlusal force to realize tooth crevice cleaning.

The present invention is negative pressure well control fluid for oil well repairing operation with less damage and belongs to the field of oil field chemical technology. The well control fluid consists of cationic polyelectrolyte 30-50 weight portions, cocoanut oil diethanolamide 40-62 weight portions, sodium alkylbenzenesulfate 1.5-2.5 weight portions and polyquaternary ammonium 0-5.5 weight portions, which are added successively and mixed to obtain the well control fluid product. The well control fluid of the present invention has certain viscosity, produces stable foam during pumping, becomes dilute under shearing condition, and is easy to prepare, high in heat resistance and low in cost.

The invention provides a liquid dispensing pot which comprises a pot body. The pot body comprises a pot core on the inner side of the pot body and a baffle ring, wherein the pot core is sleeved with the baffle ring. Two or more dispensing troughs are formed inside the pot core. The dispensing troughs are arranged along the edge of the pot core. Liquid outlets which allow liquid to pass through are formed in the positions, close to trough openings, of the outer walls of the dispensing troughs. A pot opening corresponding to one of the liquid outlets in position is formed in one side of the baffle ring covering the liquid outlets. The pot core can rotate in the baffle ring. A pot plug used for preventing liquid from leaking is arranged on the top of the pot body. The multiple dispensing troughs are arranged in the same pot body so that multiple kinds of liquids can be dispensed at the same time, the quantities of liquid pot bodies are reduced, energy is saved and consumption is reduced. The baffle ring is arranged to serve as a valve of the liquid outlets, and the targeted liquid can be switched rapidly and conveniently by rotating the pot core. According to the liquid dispensing pot, the problem that an existing pot body cannot dispense multiple kinds of liquids simultaneously is solved well.

The invention relates to an inkjet method for highly simulated marble tiles. The method comprises the following steps: 1) sintering the ceramic tile body at 850-1000°C for the first time; 2) sintering the body after step 1) Applying the underglaze, the underglaze includes 8-14% organic binder; 3) Carrying out the second sintering of the green body after applying the underglaze in the range of Tf+150°C to T1-50°C, wherein the Tf is the decomposition temperature of the organic binder, and the T1 is the first sintering temperature; 4) inkjet the green body obtained in step 3), and the boundary of the ink pigment is controlled within 150° from the corresponding texture boundary of the green body At 200 microns, the inkjet volume is 104‑158g / m 2 · mm, the m 2 is the surface area of ​​the green body, and the mm is the thickness of the bottom glaze; 5) Carry out a permeation-promoting treatment to the green body completed by inkjet. Ink jetting according to the technical solution of the invention can effectively control the penetration degree of the ink pigment, and the texture coincidence degree of the body and the bottom glaze on the longitudinal section is high, which greatly improves the three-dimensional effect and simulation degree of the ceramic tile.

The invention discloses an aeronautical plug quick disassembling device which includes a moving box. A horizontal angle adjusting device is arranged below the moving box, a controller is arranged on the side surface of the moving box, an adjustable plug screwing device is arranged above the moving box, the upper surface of the moving box is provided with a sliding type moving positioning device, the adjustable plug screwing device drives a connecting rod to swing through stretching and drawing of a motor, meanwhile, through the effect of a lever principle, the distance of the other end of theconnecting rod is changed, and the effect of adjusting the clamping radius is achieved. A triangular connection line is formed by two driven wheels and one driving wheel, an aeronautical plug can be fixed to a circle center, rotation of the driving wheel can make the aeronautical plug rotate quickly, and therefore the effect of disassembling the aeronautical plug is achieved.

The invention provides an undershrub close-planting and root-control planting device. The device comprises a first pot body, a second pot body, connecting lock catches, an embedded piece, a fixing ring and a binding ring and is characterized in that the first pot body is arranged on the left side of the second pot body, and the first pot body is connected with the second pot body through the connecting lock catches; the embedded piece is integrally arranged on the upper portion of the first pot body; the fixing ring is integrally arranged on the lower portion of the first pot body; the bindingring is arranged on the upper side of the first pot body. The device has the advantages that by improving an existing root control device, the device can well draw in and control undershrubs to facilitate undershrub growth, planting and transplanting, root systems and stem leaves cannot be damaged during transplanting, and the device is capable of being used repeatedly, low in cost and capable ofeffectively solving problems in the prior art.

The present invention provides a highly simulated antibacterial ceramic tile and a preparation method thereof. The method comprises the following steps: 1) Preparing a green body: ball-milling the mud and powder of the green body to the required particle size, spraying and drying them in a mold according to The texture is required to be paved and pressed; 2) the green body in step 1) is fired once at 850‑1000°C; 3) the base glaze is applied to the fired body in step 2), and the base glaze The components include 8-14% of organic binder; 4) firing the green body after applying the primer; 5) performing inkjet treatment on the green body obtained in step 4); 7) sintering the green body above 1200°C; 8) pickling the sintered tiles; 9) polishing the pickled tiles, the ceramic tiles prepared by the present invention have the following characteristics: High fidelity, strong three-dimensional sense and antibacterial function.

The invention discloses a high-low temperature impact experiment box. The inside of a box body of the experiment box is vertically divided into a high-temperature cavity and a low-temperature cavity by a thermal insulation wall, a rotating roller flush with the middle of the thermal insulation wall is rotatably inserted into the front wall and the rear wall of the box body, a pair of fixing net racks positioned on the same straight line are fixedly arranged on the outer surface of the middle of the rotating roller, the thermal insulation wall is symmetrically divided into two thermal insulation split walls by taking the rotating roller and the fixing net racks as a center, movable cavities are formed in the thermal insulation split walls, upper adjusting plates are inserted into the upperportions of the movable cavities, lower adjusting plates are inserted into the lower portions of the movable cavities, the side wall of the box body is provided with driving mechanisms corresponding to the thermal insulation split walls, the driving mechanisms drive the upper adjusting plates and the lower adjusting plates, and a control box for controlling the driving mechanisms is mounted on theouter wall of the box body. Therefore, temperature interpenetration of high-low temperature areas is avoided, and the use ratio of the experiment box is increased.