16results about How to "Control volume" patented technology

The invention provides a lens group, an optical system and electronic equipment. The lens group comprises a first lens group, a second lens group and a third lens group, and the first lens group comprises a first lens to a fourth lens; the second lens group comprises fifth to eighth lenses; the third lens group includes ninth to thirteenth lenses. 0.86 < = f5 / T45 < = 4.55; 2.65 < = F910 / (CT9 + CT10) < = 3.52; f11 / F1213 is larger than-2.75 and smaller than-1.50, f5 is the effective focal length of the fifth lens, T45 is the air interval between the fourth lens and the fifth lens on the optical axis, F910 is the combined focal length of the ninth lens and the tenth lens, CT9 is the center thickness of the ninth lens, CT10 is the center thickness of the tenth lens, f11 is the effective focal length of the eleventh lens, and F1213 is the combined focal length of the twelfth lens and the thirteenth lens. The lens group can obtain a high-quality telephoto imaging effect.

The utility model relates to the field of LED substrate processing discloses LED substrate heat conducting silicone grease fixture, including fixed frame, the fixed frame is located the top surface of base, the inside fixed installation board of fixed frame, the top surface of installation board is equipped with two fixed holes, the inside fixed metal round plate of fixed hole, the top surface of metal round plate is equipped with a plurality of smearing holes, the top surface of base is detachably provided with the placing plate, the top surface of placing plate is equipped with two containing grooves. In the utility model, scrape the heat conducting silicone grease on the metal round plate, the heat conducting silicone grease will be filled into the inside of smearing hole, through the limitation of smearing hole inside space, can accurately control the amount of heat conducting silicone grease every time smearing, thereby ensuring the consistency of smearing thickness.

The utility model discloses an axial flow heat radiation servo motor, comprising a casing provided with a cover, the cover is provided with a plurality of air holes, and the casing is rotatably connected with a rotating shaft; the stator assembly is in a circular ring shape and is connected into the machine shell. The rotor assembly is connected to the rotating shaft, the stator assembly surrounds the rotor assembly, and an annular air gap is formed between the rotor assembly and the stator assembly; and the cooling fan comprises an end seat and a plurality of fan blades, the end seat is in a circular ring shape, the end seat is connected to the end part of the rotor assembly, all the fan blades are distributed along the circumferential surface of the end seat, the fan blades are overlapped with the air gaps, the fan blades are overlapped with the air holes, the fan blades are bent towards the extension direction of the rotating shaft, and the fan blades are in central symmetry about the rotating surface of the end seat. The heat dissipation device is compact and reliable in structure, heat dissipation cost can be effectively saved, pertinence of fan blade operation heat dissipation is high, the energy utilization rate is high, heat dissipation efficiency is high, operation stability is high, and stable heat dissipation under the bi-directional rotation working condition can be guaranteed.

The utility model relates to the technical field of particulate matter detection, in particular to a particulate matter filtering material performance testing device which comprises a first round pipe and a second round pipe, a connecting cylinder is fixedly connected to one side of the first round pipe, a wind speed measuring probe is fixedly connected to the surface of the first round pipe, a filtering structure is arranged in the first round pipe, and a wind speed measuring probe is fixedly connected to the surface of the second round pipe. A wind pressure measuring probe is fixedly connected to the surface of the second round pipe, a fan is arranged on one side of the interior of the second round pipe, and a fixing structure is arranged on the other side of the interior of the second round pipe. The wind speed measuring probe, the filtering structure, the wind pressure measuring probe, the fan and the fixing structure are arranged and integrated in one set of device, the matching error caused by independently adjusting various parameters is solved, the operation difficulty is greatly reduced, the size of the device is effectively controlled, and the filtering structure and the fixing structure are arranged, so that the device is convenient to use. The service life of the filter screen is prolonged, and the to-be-tested material is more convenient to clamp.

The utility model discloses a slender vehicle-mounted bass sound box. The sound box comprises a box body, a bass sounding unit and an echo tube, the box body comprises a top plate, side plates and a bottom plate, and a sound cavity enclosed by the top plate, the side plates and the bottom plate is formed in the box body; the top plate is provided with a first mounting hole communicated with the sound cavity, and the top plate or the side plate is provided with a second mounting hole communicated with the sound cavity; the bass sounding unit is mounted in the first mounting hole, the bass sounding unit is provided with a vibrating diaphragm, and the vibrating diaphragm limits a part of the boundary of the sound cavity; the echo tube extends into the sound cavity from the second mounting hole; the minimum distance E between the second mounting hole and the center of the diaphragm satisfies the following formula: Rd < = E < = 3.5 Rd, wherein Rd represents the radius of the diaphragm. According to the slender vehicle-mounted bass sound box, the bass strength, the diving depth and the bass purity and texture of the vehicle-mounted bass sound box are effectively improved on the premise that the volume of the sound box is kept moderate and the cost is controllable.

The utility model provides a kind of working substance purification system, it is related to high temperature heat pipe technical field.Working substance purification system includes first separating device, second separating device and environment generating device, first separating device includes first container, filter device in first container and first heating device, first container contains the working substance to be purified, first heating device is used to heat the working substance to be purified, filter device is configured to centrifugal filtration to the working substance to be purified.Second separating device includes second container and second heating device, second container is connected with the export of first container, and second heating device is used to heat the working substance, which is contained by second container, after centrifugal filtration by first separating device, to separate the impurities with lower evaporation temperature in the working substance after centrifugal filtration.Environment generating device includes protective gas supply source, and protective gas supply source is connected with first separating device and second separating device, and provides protective gas for first separating device and second separating device.

The embodiment of the invention discloses a meta-object code generation method and device, electronic equipment and a storage medium. According to the technical scheme, before the first source code file is compiled, the first source code file is pre-analyzed, the first connection statement in the source code is recognized, and the first connection statement is used for connecting the first function and the second function; obtaining a corresponding first function index and a second function index based on the first connection statement, and generating index mapping information based on the first function index and the second function index; and in the process of compiling the first source code file, generating a meta-object code corresponding to the first connection statement based on the index mapping information. By means of the technical means, the code size can be effectively controlled while the function binding efficiency is improved, and the dual requirements for program efficiency and size in the resource-constrained environment are met.

The present application provides siRNA delivery nanomaterials targeting M2 macrophages, which are mannosylated bovine serum albumin nanoparticles encapsulating siRNA interfering with KLK12. The mannose coating of the materials of the present application can provide targeting effect on M2 macrophages, and the siRNA released after endocytosis of the materials can silence the expression of KLK12 and its downstream MMPs genes, reduce the degradation of collagen fibers in lung tissues, thereby controlling the number and volume of pulmonary tuberculosis granulomas, preventing the occurrence of active tuberculosis, and providing a new option for the treatment of tuberculosis.

The utility model relates to electrolytic capacitor technical field, concretely is a small volume electrolytic capacitor with good heat dissipation, the utility model discloses an electrolytic capacitor body, the top of electrolytic capacitor body is installed with two pins, the surface of electrolytic capacitor body is covered with heat dissipation shell, the surface of heat dissipation shell is fixedly connected with adsorption piece, one side of adsorption piece is adsorbed and is connected with magnetic attraction piece, one side of magnetic attraction piece is fixedly connected with shell cover, the surface of shell cover is equipped with two through -hole, and the through -hole is slidably connected with pin, the bottom of heat dissipation shell is equipped with heat dissipation hole, the inner wall of heat dissipation shell is fixedly connected with a plurality of heat conduction bosses, and the bottom of heat conduction boss and electrolytic capacitor body abuts. Solveed the low heat dissipation efficiency, the complex structure, the installation inconvenience and so on of the existing small volume electrolytic capacitor heat dissipation structure, cannot satisfy the problem of actual use demand.

The utility model relates to the technical field of glass steel anchor rod production, and disclose a cutting device of glass steel anchor rod, include: frame, cutting structure, blanking structure, blanking structure includes linear guide rail, sliding seat, second cylinder and third cylinder, linear guide rail fixed mounting is at the top surface of frame, sliding seat is connected with linear guide rail sliding, second cylinder fixed mounting is at one side of frame, the output shaft of second cylinder is connected with sliding seat fixedly, third cylinder fixed mounting is at the top surface of sliding seat, through third cylinder output shaft goes down, second cylinder promotes sliding seat along linear guide rail sliding, and further third cylinder's output shaft can push the anchor rod after cutting away from frame, one side fixed mounting of frame has the lifting frame, and the anchor rod after cutting away falls on the lifting frame and is concentratedly piled up, and the mode of pushing material from the side is low to the stroke requirement of second cylinder, and the volume and floor area of complete machine can be controlled.

The utility model discloses a combined keyboard which comprises a main keyboard and a keyboard combination function module, the keyboard combination function module is detachably arranged on the side face of the main keyboard, the keyboard combination function module is electrically connected with the main keyboard, the keyboard combination function module comprises an auxiliary keyboard and a touch screen, the auxiliary keyboard comprises a base plate and a key plate, and the touch screen is electrically connected with the auxiliary keyboard. The substrate is provided with a groove, the key board is movably arranged in the groove, and the touch screen is arranged on the bottom surface of the groove. According to the utility model, on one hand, through the detachable design, a user can flexibly mount or dismount the keyboard combination function module according to own use scenes and requirements, so that the flexibility and adaptability of keyboard use are greatly improved; on the other hand, organic combination of physical keys and touch operation is achieved, input modes are enriched, and meanwhile operation habits of different users are met. In addition, the structural design is compact and reasonable, the overall size is effectively controlled while function expansion is achieved, and practicability and portability are both considered.

This utility model discloses an audible and visual alarm device, comprising: a monitoring unit for converting acquired image data into digital signals; a switching unit connected to the monitoring unit to generate a first electrical signal or a second electrical signal; a control unit connected to the switching unit to generate a low-frequency alarm signal based on the first electrical signal; and an alarm unit connected to both the switching unit and the control unit to generate a light signal based on the first electrical signal and a low-frequency buzzer based on the low-frequency alarm signal, or, the alarm unit generating a light signal and a low-frequency buzzer based on the second electrical signal. This utility model controls the warning states of three indicator lights and the operating states of the low-frequency and high-frequency buzzers by controlling the corresponding on / off states of a control relay module, thereby enabling the classification of alarm events based on alarm indications and improving event processing efficiency.

The utility model belongs to lithium ion battery pole piece preparation technical field discloses a kind of shift paste devices for coating including piston cylinder, piston, needle and filter assembly;Piston is movably arranged in piston cylinder;Filter assembly includes connecting seat, puller and filter screen;Connecting seat is opened with intercommunication passage along first direction;Piston cylinder is connected with needle through connecting seat, and piston cylinder, intercommunication passage and needle are sequentially communicated;Sliding groove, which is communicated with intercommunication passage, is opened in connecting seat along second direction, and first direction and second direction intersect;Filter screen is arranged on puller, and puller is sealingly slidably arranged in sliding groove;Filter screen has first position and second position, when filter screen is in first position, filter screen is located at intercommunication passage, when filter screen is in second position, filter screen is staggered with intercommunication passage.The shift paste device for coating can accurately control the volume of slurry transferred to current collector.

This invention relates to the field of battery technology, specifically providing a dry-process lithium replenishment equipment to address the high risk associated with existing lithium replenishment equipment. To this end, the dry-process lithium replenishment equipment of this invention includes a feeding device, a film processing roller mechanism, a first spraying mechanism, a second spraying mechanism, and a film composite roller mechanism. The film processing roller mechanism can form a first film and a second film from the negative electrode fibrous active material. The first and second spraying mechanisms can spray an adhesive and inert lithium powder onto the surfaces of the two films, which are then composited by the film composite roller mechanism to form a lithium-containing film. This configuration allows the lithium replenishment equipment of this invention to form a lithium-containing film from the negative electrode fibrous active material and inert lithium powder. In practical applications, the lithium-containing film is then adhered to the negative electrode current collector to form a lithium-replenishing electrode sheet. This results in low risk and high efficiency in lithium replenishment. The lithium powder layer is sandwiched between the two films, thus providing effective protection for the lithium powder layer.

The application discloses a portable hand power-assisted exoskeleton auxiliary system and relates to the field of medical devices. The system comprises an exoskeleton auxiliary device, a wearing assembly and an interactive collection device. The main auxiliary device is detachably installed on the wearing assembly and is worn on the user's hand. The main auxiliary device comprises a control module and two groups of mutually perpendicular mechanical hand transmission assemblies, the ends of which are power output ends and are respectively provided with detachable clamping claws to simulate the grasping actions of four fingers and a thumb. The interactive collection device comprises an electromyographic signal collection unit and a foot posture sensing unit to respectively collect forearm electromyographic signals and foot action signals. The control module receives input signals of various channels, determines target actions according to the action signal mapping relationship and the exoskeleton state, and controls the two groups of mechanical hand transmission assemblies to perform corresponding finger actions. The scheme overcomes the problems of poor portability, poor wearing comfort and single interactive mode and has the advantages of good portability, various interactive modes, comfortable wearing and the like.

The application provides a lens set, an optical system and an electronic device. The lens set comprises a first lens set, a second lens set and a third lens set, the first lens set comprises a first lens to a fourth lens, the second lens set comprises a fifth lens to an eighth lens, and the third lens set comprises a ninth lens to a thirteenth lens. 0.86≤f5 / T45≤4.55, 2.65≤F910 / (CT9+CT10)≤3.52, and -2.75<f11 / F1213<-1.50, wherein f5 is the effective focal length of the fifth lens, T45 is the air interval of the fourth lens and the fifth lens on the optical axis, F910 is the combined focal length of the ninth lens and the tenth lens, CT9 is the center thickness of the ninth lens, CT10 is the center thickness of the tenth lens, f11 is the effective focal length of the eleventh lens, and F1213 is the combined focal length of the twelfth lens and the thirteenth lens. The lens set can obtain a high-quality telephoto imaging effect.