35results about How to "Reduce heating rate" patented technology

The invention relates to the technical field of gas storage, in particular to a storage device. The storage device comprises a storage tank used for storing low-temperature liquefied gas; the shell part comprises a shell body and a connecting piece, a containing space is formed in the shell body, the saving box is located in the containing space, one end of the connecting piece is connected to the shell body, and the other end of the connecting piece is connected to the saving box; and the cooling part comprises a cooling pipeline, the cooling pipeline is wound around the exterior of the storage tank and the connecting piece, and a cooling medium is contained in the cooling pipeline. Based on the setting, the storage device provided by the embodiment of the invention can reduce the temperature influence of the external environment on the storage tank, prolongs the storage time of the storage tank for the low-temperature liquid gas, and is beneficial to reducing the loss of the low-temperature liquid gas.

The invention discloses a method for improving the firing yield of cordierite DPF honeycomb ceramics, and belongs to the technical field of honeycomb ceramic carrier preparation. The preparation method comprises the following steps: mixing raw materials; kneading mud; performing extrusion molding; drying and shaping; cutting and firing to obtain a cordierite honeycomb ceramic carrier; and performing boundary dimension processing, film covering, hole dotting, mud scraping and drying to obtain a finished product. According to the invention, magnesium hydroxide is used for replacing part or all of talc in a traditional formula of a cordierite porous ceramic structural body, and magnesium hydroxide absorbs a large amount of heat when heated, so that rapid temperature rise of a DPF carrier mud blank caused in an organic matter coke discharge process is slowed down, the temperature gradient of the DPF carrier mud blank in a firing process is reduced, and the sintering temperature of the DPF carrier mud blank is reduced. Therefore, the generation of mud blank cracks is inhibited in the firing process, and the firing yield is improved.

The invention belongs to the technical field of preparation of carbon fiber reinforced carbon-based composite materials, and discloses a tungsten modified C / C composite material and a preparation method thereof.The C / C composite material is placed on a filter membrane, suction filtration is conducted on turbid liquid of tungsten powder, a first composite structure formed by compositing the tungsten powder and the C / C composite material is obtained, and the first composite structure is dried; and performing carbon deposition densification on the dried first composite structure to obtain the tungsten modified C / C composite material. The tungsten is distributed in a zigzag shape at the interface of the coating and the substrate, so that the binding force between the coating and the substrate is obviously enhanced. In the initial stage of ablation, the coating tungsten transfers heat on the surface of the composite material to the matrix, and then the matrix tungsten transfers the heat into the material, so that concentrated thermal stress on the surface of the material is reduced. Along with gradual increase of the temperature, the matrix tungsten firstly chemically reacts with C to strongly absorb heat, and WO3 formed by surface oxidation evaporates to absorb heat, so that the heating rate and the ablation temperature of the surface of the composite material are reduced, and the ablation resistance of the material can be powerfully improved.

The utility model relates to a humidity-sensitive capacitor and a humidity measuring device. The humidity-sensitive capacitor comprises a substrate, and a heating layer, an insulating layer, a first electrode layer, a humidity-sensitive dielectric layer and a second electrode layer which are located on the substrate and are sequentially distributed in the direction perpendicular to the top surface of the substrate, the bottom surface of the substrate comprises a groove, and the orthographic projection of the heating layer on the top surface of the substrate is located within the orthographic projection of the groove on the top surface of the substrate; the insulating layer at least covers the heating layer. The heating layer is formed on the top surface of the substrate, the first electrode layer, the humidity-sensitive dielectric layer and the second electrode layer are heated, the evaporation speed of moisture in the humidity-sensitive dielectric layer is increased, the bottom surface of the substrate comprises the groove, and the orthographic projection of the heating layer on the top surface of the substrate is located within the orthographic projection of the groove on the top surface of the substrate; therefore, the thickness of the substrate in the area in contact with the heating layer is reduced, the heat dissipation capability of the film layer in contact with the heating layer is enhanced, the evaporation speed of moisture in the humidity-sensitive dielectric layer is increased, the temperature rise speed of the other film layers of the humidity-sensitive capacitor is slowed down, and the damage to the device is avoided.

The invention discloses a thermal insulation device for a frozen rock and soil flying chip impact test, which belongs to the technical field of flying chip impact test, and comprises a first thermal insulation mechanism, a second thermal insulation mechanism, a target frame, a flying chip impact test target plate arranged on the target frame, a thermal insulation jacket, a cover plate and a driving mechanism; the first thermal insulation mechanism comprises a thermal insulation bottom plate A, a thermal insulation inner cylinder A and a thermal insulation outer cylinder A; the second thermal insulation mechanism comprises a thermal insulation bottom plate B, a thermal insulation inner cylinder B and a thermal insulation outer cylinder B; a gap for storing ice is provided between the thermal insulation inner cylinder B and the thermal insulation outer cylinder B; the invention utilizes a layered thermal insulation method, and a gap is provided between the thermal insulation inner cylinder B and the thermal insulation outer cylinder B, and water can be injected into the gap before the test starts, and the flying chip impact test target plate is insulated by utilizing the frozen first thermal insulation mechanism and the second thermal insulation mechanism, thereby solving the problem that rocks normally frozen at room temperature cool down quickly and the temperature cannot be controlled within the required range for the test.

The utility model discloses a coating machine with a cooling structure, which comprises a coating machine frame, a transmission motor arranged on the coating machine frame, a driving shaft movably arranged at one end of the coating machine frame and connected with the transmission motor, a driven shaft movably arranged on the coating machine frame, and a conveyor belt sleeved on the driving shaft and the driven shaft, a scraper assembly and an air cooling assembly are mounted on the coating machine rack; a heat dissipation block is further installed on the coating machine rack, the heat dissipation block and the air cooling assembly are both located between the transmission motor and the scraper assembly, and the heat dissipation block and the air cooling assembly are both used for cooling coating which does not pass through the scraper assembly. According to the utility model, the temperature rising speed of the coating can be reduced, so that the solidification speed of the coating is further reduced, and the coating quality and the product quality are ensured.

This utility model discloses a bridge-type lifting edge cutting machine for building stone, relating to the field of edge cutting machines. It includes a base, with a first sliding groove in the center of the upper surface of the base, and second sliding grooves on both sides of the first sliding groove on the upper surface of the base. A moving component is slidably engaged inside the first sliding groove. A shatterproof support plate is fixedly installed at one end of the base, and a blade retraction groove is formed on the shatterproof support plate. By setting the shatterproof support plate, during use, the edge of the stone and the main body of the stone are respectively located on both sides of the blade retraction groove. When the cutting blade cuts, the shatterproof support plate provides reliable support to the edge of the stone, preventing insufficient support and edge breakage. Furthermore, the cut scraps slide down through the material retraction groove, achieving automatic cleaning. This not only protects the integrity of the stone during processing but also automatically cleans up waste, preventing accumulation. The structure is simple and the effect is good.

The invention discloses a rock drill drilling hydraulic system, which relates to the technical field of rock drill hydraulic systems and comprises a hydraulic power unit, an impact execution unit, a propulsion execution unit, a geological sensing unit, an intelligent control unit and an oil temperature adjusting unit. A variable displacement piston pump of the hydraulic power unit supplies energy to the system; the geological sensing unit collects geological parameters through a drill rod torque sensor and a vibration sensor; the intelligent control unit calls a pre-stored mapping relation table to be matched with target impact pressure, precise pressure control is achieved through a PID adjusting impact valve set, and the displacement of a variable pump is synchronously adjusted; the oil temperature adjusting unit is linked with the plate heat exchanger through the temperature sensor to cool oil temperature. According to the system, self-adaptive adjustment of impact pressure of different geological stratums is achieved, throttling loss is avoided, oil temperature rising is relieved, the drilling efficiency is improved by 15%-20% through cooperation of the two, the continuous operation oil temperature is controlled to be 60 DEG C or below, the service life of equipment is prolonged, and the maintenance cost is reduced.

This invention belongs to the field of injection molding machine technology, specifically a screw injection molding machine with constant temperature heating of the barrel. The proposed solution includes: an injection unit, with a feed hopper detachably fixed to its side; a power unit, with its top fixed to the bottom of the injection unit; a barrel, with its bottom fixed to the top of the injection unit; a heating mechanism nested on the outer surface of the barrel; vertical rods, with one end fixed to the outer surface of the heating mechanism; a placement plate, fixed to the other end of the vertical rods; and a screw, with its bottom positioned at the top of the injection unit. This invention utilizes a cyclic high-temperature environment to cause significant deformation of the bimetallic strip. After bending, the active and passive layers of the bimetallic strip tightly adhere to the outer wall of the barrel. Heat is directly transferred to the barrel through the metal cap and bimetallic strip in a solid-state heat conduction manner, significantly improving heat transfer efficiency.

The invention belongs to the technical field of road building materials, and relates to an aerogel composite modified heat-resistant thermal-insulation asphalt material which comprises the following components in parts by mass: 8-15 parts of SiO2 aerogel powder; 1-4 parts of a carbon nanotube; 1-3 parts of hollow glass beads; 80 to 85 parts of asphalt; the SiO2 aerogel powder, the carbon nanotubes and the hollow glass beads form an aerogel composite modifier; in the aerogel composite modified heat-resistant thermal-insulation asphalt material, the doping amount of the aerogel composite modifier is 15%-20%. The invention further discloses a preparation method and application of the aerogel composite modifier, the aerogel composite modifier composed of the SiO2 aerogel powder, the carbon nanotubes and the hollow glass beads is used in the asphalt pavement, the durability of the pavement can be improved, and the tolerance of the pavement structure to extreme air temperature can also be improved.

The invention discloses a method for manufacturing a high-alloy iron-based casting ceramic grate bar of a sintering machine, which comprises the following steps of: arranging high-temperature-resistant ceramic chips which can resist the temperature of more than 800 DEG C, have the thickness of 1-6mm and are quadrilateral or hexagonal in appearance on the surface of a mold, and keeping the distance between the high-temperature-resistant ceramic chips at 1-6mm; the alloy cast iron furnace burden is weighed according to a conventional proportion, and the scrap steel, the iron alloy, the deoxidizer, the iron alloy and the deoxidizer are sequentially added; and casting: polishing and cleaning a casting. The fire grate bar manufactured through the method has excellent high-temperature mechanical performance and high-temperature oxidation corrosion resistance, and is long in service life and low in manufacturing cost.

This invention pertains to composite material manufacturing technology and relates to a method and structure for curing and stamping at the chamfered position of a honeycomb sandwich structure autoclave. A thermally conductive material is laid on the plane where the stamping position of the honeycomb sandwich structure is located, extending from the stamping position to the center of the plane; the thermally conductive material is positioned between the release film, the breathable felt, and the vacuum bag.

The invention relates to the technical field of steel smelting, and proposes a low-cost deep-drawing steel plate and a production process thereof. The composition of the low-cost deep-drawing steel plate is as follows by mass percentage: C 0.02% to 0.07%, Si≤0.03%, Mn 0.08% to 0.20%, P≤0.025%, S≤0.020%, Als 0.015% to 0.055%, the balance is Fe and inevitable impurities, the production process includes the following steps: S1, converter smelting: add the raw materials into the converter for blowing; S2, LF refining; S3, continuous casting into slabs; S4, hot rolling; S5, cold rolling pickling; S6, annealing: heating to 480-500℃ at 70-90℃ / h, keeping warm for 5-6h; heating to 680-700℃ at 70-110℃ / h, keeping warm for 8-10h; air cooling to 200-250℃, then water cooling to 50-60℃, and finally cooling at room temperature for 5-6h; S7, flattening treatment to obtain the low-cost deep-drawing steel plate. Through the above technical solution, the problem that the cost and quality of deep-drawing steel plates in the prior art cannot be taken into account is solved.

The application belongs to the field of ceramic powder preparation, and discloses a method for in-situ preparation of high-performance TiB2-B4C composite ceramic from sapphire fine grinding waste. The method uses the waste produced in the sapphire grinding process as raw material (B4C, Al2O3 and Fe), adds TiO2 and C after alkali washing and purification, and combines with the discharge plasma sintering to in-situ prepare TiB2-B4C composite ceramic. The method not only realizes the comprehensive recovery of B4C in the sapphire fine grinding waste slurry, reduces environmental pollution, but also provides a method for in-situ preparation of TiB2-B4C composite ceramic from waste, changes waste into treasure, and realizes the secondary use of resources. In addition, the raw material cost is low, and the method has obvious economic value and environmental protection significance. The method has the advantages of short process, small pollution, simplicity and the like, and can be used for industrial production.

The invention discloses a metallurgical biomass charcoal preparation system and method.The system comprises a biomass carbonization device, and a carbonized material outlet of the biomass carbonization device is sequentially connected with feed inlets of a charcoal smashing device, a premixing device and a granulation device; a combustible gas outlet of the biomass carbonization device is connected with a flue gas inlet of the primary combustion device, a discharge port of the granulation device and a flue gas outlet of the primary combustion device are both connected with an inlet of the quality improving device, and an outlet of the quality improving device is connected with an inlet of the carbon particle cooling device. The biomass charcoal prepared by the method has the characteristics of high mechanical strength and proper reaction activity, meets the requirements of a solid reducing agent for the metallurgical industry, can replace coal coke, and provides powerful support for carbon emission reduction in the metallurgical industry.

The present invention discloses a chip stability test device and method at a specific temperature, and relates to the field of chip production technology. The present invention comprises a heat-insulating outer shell, a heat-insulating cover is placed on the top of the heat-insulating outer shell, a plurality of vertically arranged lifting electric push rods are fixedly installed on one side of the heat-insulating outer shell, the telescopic ends of the lifting electric push rods are fixedly installed on the bottom of the heat-insulating cover, a heat-conducting inner box is fixedly installed inside the heat-insulating outer shell, and a chip support table is fixedly installed inside the heat-conducting inner box. The present invention sets a cooling component, when the chip heats up and causes the internal temperature to rise, the heat inside the heat-conducting inner box is quickly conducted through the cooling metal rod to cool down, and when the temperature in the heat-conducting inner box drops back to a specific temperature, each water supply control valve is closed, so that the cooling metal rod slowly conducts heat, delays the temperature rise rate in the heat-conducting inner box, until the temperature again significantly exceeds the specific temperature, thereby reducing the influence of the heat of the chip itself on the stability test results.

The present invention belongs to the technical field of electrical control cabinets, and provides an efficient heat dissipation and noise reduction device for an electrical control cabinet, comprising a cabinet body, a cabinet door being rotatably installed on one side of the cabinet body, a plurality of groups of spaced partitions being fixedly installed in the cabinet body, cavities being provided on the partitions and the bottom side walls of the cabinet body, and through holes communicating with the cavities being provided on the partitions and the bottom side walls of the cabinet body, so as to solve the technical problem in the prior art that heat accumulation at the top of the electrical control cabinet is difficult to dissipate quickly, resulting in damage to electrical components. The present invention transports air to the partitions and the cavity at the bottom of the cabinet body through a ventilation component, thereby avoiding the air from flowing a long distance in the cabinet body, thereby ensuring that the air temperature is low when flowing in the cabinet body, so that the air entering the cabinet body from the outside can carry more heat and leave the cabinet body. The present invention can be widely used in operating scenarios for cooling the cabinet body.

The utility model relates to the field of heat storage, in particular to a high-voltage heater module for energy storage of a heat storage brick, which comprises a support frame arranged in a brick body, an electricity inlet junction box and an electricity outlet junction box are arranged on the support frame, a plurality of parallel resistance tubes are arranged in the support frame at intervals, and the end parts of the resistance tubes are sleeved with electrode connecting plates; and the plurality of resistance tubes are connected in series through the plurality of electrode connecting plates and are conducted with the power inlet junction box and the power outlet junction box. The resistance tube is adopted as a heating source, so that the contact area between heat and the heat storage material is greatly increased, and the heating rate of the heat storage material is increased.

The high-cleanliness high-vacuum high-pressure heat treatment device comprises a furnace body and a furnace door, crystal materials needing heat treatment are placed in a furnace cavity in the middle of the furnace body, and the crystal materials in the furnace cavity are subjected to high-temperature sintering through a first heating furnace pipe, an aluminum oxide furnace pipe and a second heating furnace pipe which are arranged on the peripheral side of the furnace cavity. The furnace door and the furnace body are sealed through the fluororubber sealing ring, heat loss in the furnace cavity is avoided, the stainless steel water cooling cavity is formed in the furnace door, the furnace door is cooled, the fluororubber sealing ring is prevented from being heated and deformed, and the service life of the sealing ring is prolonged; cold water is introduced into the water cooling cavity from the water inlet to cool the furnace door, the cold water flows out from the water outlet and is recycled, continuous cooling of the furnace door is achieved, the pipe plug sewn by aluminum oxide cloth is installed between the furnace door and the furnace cavity to block heat transfer from the furnace cavity to the furnace door, and heat loss in the furnace cavity is further reduced.

The invention discloses a financial and tax document safety box which is mainly composed of a safety box body, a cooling block, a torsion bar, a drawing box and the like. The safety box has the advantages that the temperature rise speed of the safety box is slowed down when a fire occurs, and when the fire occurs outside the safety box, the temperature of external flames can bake the safety box, so that the temperature of the safety box rises rapidly, and water in a circulating cavity and a cooling cavity is heated; the water slowly flows and exchanges heat in the circulating cavity and the cooling cavity after being heated, so that the water in the circulating cavity and the cooling cavity is heated together, when the water temperature reaches the temperature at which the wax ring can be dissolved, the wax ring is heated to be dissolved and decomposed, so that the ammonia block can penetrate through the wax ring to be fused with the water, and when the ammonia block is fused with the water, the ammonia block can penetrate through the cooling cavity to be fused with the water. The ammonia blocks can absorb heat in water, so that the temperature of the water is reduced, and the effect of delaying the water temperature rising speed is achieved.

This invention provides a method for preparing carbon-coated lithium manganese iron phosphate cathode material, belonging to the field of battery cathode material technology. The method includes the following steps: co-precipitating a mixed solution of iron, manganese, and phosphorus sources with a precipitant solution, and drying to obtain a lithium manganese iron phosphate precursor; adding a lithium source, and calcining and grinding in an inert gas atmosphere to obtain lithium manganese iron phosphate powder; ball milling the lithium manganese iron phosphate powder with a flux, dispersing it in a carbon source solution, uniformly coating the carbon source, and then drying, calcining in stages, and ball milling to obtain the final product. By controlling the rate of reaction in stages with the phosphorus, manganese, and iron source solutions, the uniformity of precursor nucleation and coating is improved; the use of a mixed lithium source and staged calcination reduces lithium volatilization; and coating the lithium manganese iron phosphate powder with a modified nitrogen-doped porous carbon source generates the lithium manganese iron phosphate cathode material, enhancing its conductivity.

The utility model provides a chimney smoke exhaust fan, and belongs to the technical field of smoke exhaust fans. The problem that a motor of an existing smoke exhaust fan is prone to damage is solved. The chimney smoke exhaust fan comprises a cylindrical shell, the interior of the shell is divided into a smoke exhaust cavity and a mounting cavity through a partition plate assembly, a motor is fixedly connected into the mounting cavity, an output shaft of the motor penetrates through the partition plate assembly and extends into the smoke exhaust cavity, and the outer end of the output shaft is fixedly connected with a first impeller; the outer circumferential wall of the shell is provided with a plurality of smoke outlet holes opposite to the first impeller, the outer circumferential wall of the shell is further provided with a plurality of first heat dissipation holes, the first heat dissipation holes are located between the smoke outlet holes and the partition plate assembly, all the first heat dissipation holes define a plurality of circles in the circumferential direction of the shell, and the first heat dissipation holes in every two adjacent circles are arranged in a staggered mode. The chimney smoke exhaust fan has the advantage of being long in service life.

The invention belongs to the technical field of kitchenware, and discloses a cooking utensil door body structure, a preparation process, a cooking utensil and an integrated kitchen range, the cooking utensil door body structure is configured to be installed at an opening of a box body of the cooking utensil, and comprises a plurality of inner heat insulation plates and outer panels which are sequentially arranged at intervals; a low-radiation layer is arranged on the side, back on to the outer panel, of each inner heat insulation plate, and the low-radiation layers are used for reflecting heat in the oven body back into the inner cavity of the oven body and reducing the temperature rising speed of the inner heat insulation plates, so that the temperature rising speed of the outer panel facing a user can be reduced, and the user is prevented from being burnt in the cooking process. According to the preparation process of the inner heat insulation plate, the inner heat insulation plate base body conforming to the design raw materials and consistent with the specified shape and size is manufactured through the steps of burdening, melting and forming, and in the film coating stage, by controlling the vacuum degree and the temperature environment where the film coating procedure is located, the film coating quality can be optimized, and the heat radiation energy reflecting capacity can be improved.

The invention provides a balloon plugging device for ultrasonic 3D printing, which comprises a multi-cavity catheter, the multi-cavity catheter comprises an outer layer protective sleeve, an inflation catheter and an ink delivery pipe, the inflation catheter and the ink delivery pipe are located in the outer layer protective sleeve, and the axes of the outer layer protective sleeve, the inflation catheter and the ink delivery pipe are parallel; the outer-layer protective sleeve is provided with a first sealing face and a second sealing face which are perpendicular to the axis, the first sealing face is the front end face of the outer-layer protective sleeve, the second sealing face is located at one end close to the front end face of the outer-layer protective sleeve, and the position, between the first sealing face and the second sealing face, of the outer-layer protective sleeve is connected with a pneumatic balloon. The pneumatic balloon is communicated with a cavity between the first sealing surface and the second sealing surface; the front end of the inflation catheter is communicated with the pneumatic balloon, and the front end of the ink conveying pipe extends out of the first sealing face. Blood flow and uncured acoustic ink can be physically isolated through the pneumatic balloon, the ink is prevented from being washed away by the blood flow, and meanwhile, hydrogel particles of the acoustic ink are prevented from entering blood to cause thrombus.

The utility model discloses a PVC (polyvinyl chloride) / PS (polystyrene) composite floor with high stability, which belongs to the technical field of floors and comprises a PVC / PS composite board, positioning mechanisms are fixedly connected to the front end and the rear end of the PVC / PS composite board, a communication mechanism is fixedly connected to the middle of the PVC / PS composite board, and heat conduction mechanisms are fixedly connected to two sides of the communication mechanism. The positioning mechanism comprises inserting blocks fixedly connected to the middles of the two sides of the front end of the PVC / PS composite board, long-strip-shaped grooves are formed in the middles of the upper surfaces and the lower surfaces of the inserting blocks, telescopic springs are fixedly connected into the long-strip-shaped grooves, and telescopic long strips are fixedly connected to the ends, away from the long-strip-shaped grooves, of the telescopic springs. And a chute is formed in one end, far away from the telescopic spring, of the telescopic strip. The high-stability PVC / PS composite floor disclosed by the utility model has the effect of stable connection in a rapid heating environment.

The utility model relates to the technical field of water coolers, in particular to a heat dissipation system of a water cooler, which comprises a heat dissipation water tank, a cooling coil, a compressed gas pipe group and an exhaust assembly, a heat dissipation cavity used for storing tap water is formed in the heat dissipation water tank, the cooling coil is located in the tap water in the heat dissipation cavity and used for allowing fluid needing to be cooled to pass through, circulating pipes used for being connected with the water circulating assembly are arranged at the top and the bottom of the heat dissipation cavity, and the compressed gas pipe set is connected with a gas source for conveying compressed gas. The compressed gas pipe set is installed on the cavity wall of the heat dissipation cavity and used for introducing compressed gas into tap water, and the exhaust assembly communicates with the top of the heat dissipation cavity and used for exhausting gas in the heat dissipation cavity. Compressed gas is introduced into tap water through the compressed gas pipe set, so that the tap water is stirred, the water flow conversion speed around the cooling coil pipe is increased, heat dissipation of the cooling coil pipe is accelerated, the utilization rate of water resources in the heat dissipation water tank is increased, and energy is saved.

The present invention discloses a new energy charging pile protection device, which relates to the technical field of charging piles. The present invention includes a charging station base, a plurality of charging pile bodies are fixedly installed on the top of the charging station base, a plurality of ceiling pillars are fixedly installed on both sides of the top of the charging station base, the top of the plurality of ceiling pillars are fixedly installed with the same sunshade ceiling, the plurality of charging pile bodies are located at the bottom of the sunshade ceiling, and the surrounding sides of the charging pile bodies are provided with sunshade components. The present invention sets a sunshade component so that a winch drives the sunshade cloth to cover the front and rear of the charging pile body, and cooperates with the sunshade side panels to play the role of sunshade and heat insulation. When a vehicle needs charging service, the tire of the vehicle will press on the weight sensing plate. When the vehicle stops moving, the weight sensing plate will control the winch to retract the sunshade cloth to the top, so that the driver can charge the vehicle, and realize the sunshade protection and automatic control of the charging pile body.

The invention relates to the field of medical equipment, in particular to a tee joint quick release assembly of an injection hand tool. The injection hand tool comprises a hand tool body, a three-way head quick release assembly and a three-way head, the hand tool body comprises a fixing device, threads are arranged on the fixing device, and the three-way head quick release assembly comprises a connecting part and a rotating part; a thread is arranged in the connecting part, the connecting part is in threaded connection with the fixing device, and a mounting hole is further formed in the connecting part; a thread is arranged on the rotating piece, and the rotating piece is in threaded connection with the connecting part; a first clamping structure is arranged at the first end of the connecting part, correspondingly, a second clamping structure is arranged at the second end of the tee joint, and the connecting part and the tee joint are mutually clamped through the first clamping structure and the second clamping structure. The three-way head can be conveniently and rapidly detached and replaced, the working efficiency of operators is improved, and cross infection of liquid medicine in multiple injection processes is avoided.

The utility model provides a battery cell cover plate, a battery cell and a battery cell module, and relates to the field of battery cell structures. The battery cell cover plate comprises a main body, lower plastic is arranged at the bottom of the main body, and a boss protruding in the direction away from the main body is formed on the lower plastic; the high-temperature-resistant part corresponds to the boss and is arranged on the outer wall of the boss, and a plurality of through holes are formed in the high-temperature-resistant part so that the lower plastic can make contact with the external space. A boss protruding towards the direction far away from the battery cell cover plate main body is formed on the lower plastic, and the limiting effect on the pole group can be realized through the boss; besides, the outer wall of the boss is provided with a corresponding high-temperature-resistant part, so that when the interior of the battery cell reaches the temperature at which the lower plastic made of the PP material can be melted, the high-temperature-resistant part cannot be melted so as to play a good role in fixing the pole group, and the pole group is further prevented from moving up and down.