32results about How to "Guaranteed flow area" patented technology

The invention discloses a rotor end surface temperature measuring device for traction type molecular pumps. The rotor end surface temperature measuring device comprises an outer shell, a rotor, an end face flange, the first-stage molecular pump, the third-stage molecular pump and the second-stage molecular pump, wherein the third-stage molecular pump is in interference fit connection with the first-stage molecular pump; a screw is screwed into an end face flange threaded hole of the end face flange through a third-stage molecular pump connecting hole in the circumference of the third-stage molecular pump; the protruding end of the screw is located in a screw connecting hole in the circumference of the second-stage molecular pump; a transition part is fixed to the interior of an assembly threaded hole of an assembly stepped hole through external threads, and the free end of the transition part is located in a transition part insertion hole; an infrared probe in a temperature measurement assembly is screwed into an assembly screw hole of the transition part and is fixed to the third-stage molecular pump through the transition part. The temperature measurement assembly can be conveniently disassembled or assembled under the condition of guaranteeing the dynamic clearance of the second-stage molecular pump and the dynamic clearance of the third-stage molecular pump, and therefore the open area and pumping efficiency of a pumping tank are guaranteed.

The invention discloses a battery cell tab connecting structure which comprises tabs and busbars. Through holes matching the tabs are formed in the busbars; the through holes correspond to the tabs; one end of each tab is connected with a battery cell, and the other end of the tab is inserted into the corresponding through hole in a busbar; the tabs and the busbars are connected through laser welding at the through holes. The invention further provides a soft package battery which comprises the battery cell tab connection structure, electric equipment, an electric vehicle and a power station. According to the battery cell tab connecting structure, the soft package battery, the electric equipment, the electric vehicle and the power station, which are provided by the invention, the busbarover-current area is not occupied; the busbars and the tabs are firmly welded; pseudo soldering can be avoided; and the welding quality is convenient to detect.

The invention relates to the technical field of science and education tools, and discloses an artificial wetland model. The artificial wetland model comprises a water storage device, a water inlet pipe, a color developing agent and at least one simulated wetland unit, wherein the water storage device used for containing sewage; the color developing agent is used for being added into the sewage fora color developing reaction with pollutants in the sewage; the simulated wetland unit comprises a container, a matrix and wetland plants; the container is in the shape of a box with an opening in thetop, and a water outlet is formed in the side of the container; the water inlet pipe is connected with a water pump, two ends of the water inlet pipe are respectively introduced into the water storage device and the container; the matrix is laid in the container; the wetland plants are planted on the matrix; and the water storage device communicates with the water outlet to collect sewage flowingthrough the container. The sewage can circularly flow in the model, so the model disclosed by the invention can simulate the operation of a real constructed wetland, the purification function of thewetland is intuitively expressed through the color difference of the water storage device, the interestingness and participation of science popularization activities are increased, and the operationalability of a taught person is improved. The invention further provides an operation method of the constructed wetland model.

The invention relates to a pipeline type steam filter screen with a double-funnel structure, which can guarantee the whole flow area and has the characteristics of being convenient to assemble and disassemble, simple in structure and low in cost. According to the technical scheme, the pipeline type steam filter screen is characterized by comprising a funnel-shaped outer net and a funnel-shaped inner net, wherein the diameter of the outer net is gradually reduced from the bottom end to the top; the bottom end of the outer net is provided with a flange ring, and a mouth part on the top of the outer net is connected with the top of the inner net; the inner net extends into the outer net downward; and the diameter of the inner net is gradually reduced from the top to the bottom end.

The invention discloses an array type connection structure and electronic equipment, and belongs to electronic devices. The array type connecting structure comprises a support and a plurality of connecting assemblies. The support is used for fixing a plurality of connecting assemblies which are sequentially arranged at intervals in the length direction of the support, and no signal wire is arranged in the support. Each connecting assembly penetrates through the bracket; the first side of each connecting assembly is provided with a connector interface, the connector interface comprises a plurality of first signal terminals, and the connector interface is used for being connected with a first electronic device located on the first side of the support; the second side of each connecting assembly is directly connected with a plurality of cables, the plurality of cables are in one-to-one correspondence with the plurality of second signal terminals of the connecting assemblies, and the cables are used for being connected with second electronic devices located on the second side of the support; the support is provided with a heat dissipation through hole, and at least part of the heat dissipation through hole is located between the two adjacent connecting assemblies. The array type connection structure provided by the embodiment of the invention can have a good heat dissipation effect.

The invention discloses a replenishing valve for a hydraulic system of a press. The replenishing valve comprises a valve spool, a valve seat, a valve spool control body, a connecting rod, a return spring, a locking nut, a spring pressing cover and a guide sleeve. The replenishing valve is characterized in that the return spring is fixedly arranged in the valve seat through the spring pressing cover, the valve spool extends into the return spring through the guide sleeve, and the valve spool control body is connected with the valve seat through the connecting rod and the locking nut. The replenishing valve is simple in structure, convenient to assemble and disassemble and large in through-flow area.

The invention provides a real-time cleaning device for an oil-gas pipeline of a tire oil refining reaction kettle, and effectively solves the problems that in the prior art, the inner wall of a pipeline for conveying high-temperature oil gas cannot be cleaned in real time, attachment to the inner wall of the pipeline is easily caused, and the through-flow of the pipeline is seriously influenced. According to the technical scheme, the device comprises a hollow cylinder, a plurality of rotating shafts penetrate through the side wall of the hollow cylinder, a plurality of flat plates are arranged in the hollow cylinder, a first gear is arranged on the outer side of the hollow cylinder, the first gear is provided with a rack, a plurality of rectangular blocks are arranged on the outer side of the hollow cylinder, and a cross rod is arranged at the end of the rack; an annular cylinder is arranged on the outer side of the hollow cylinder and fixed to the hollow cylinder. The outer side of the annular cylinder is sleeved with an outer cylinder, two annular plates are arranged between the outer cylinder and the annular cylinder, an outer gear ring is fixed to the outer side of the annular cylinder, a plurality of transmission gears are arranged between the two annular plates, the transmission gears and the outer gear ring are in transmission through staggered shaft bevel gears, and wheels are fixed to the two ends of a center shaft of each transmission gear. Two ends of the hollow cylinder are connected with conical cylinders through bearings.

The invention discloses a floor socket with an electrical modular replacement function. The floor socket comprises a fixing device, a detection device, a transmission assembly, a power device and a reversing device, wherein the fixing device is connected with the detection device, the transmission assembly is connected with the fixing device, the power device is connected with the fixing device, the transmission assembly is connected with the power device, the reversing device is connected with the fixing device, the fixing device comprises a cover plate, a shell and a mounting plate, the lower side of the cover plate is fixedly connected with the shell, a mounting groove is formed in the cover plate, an air chamber is arranged on the shell, an opening is formed in the upper side of the air chamber, the mounting groove is communicated with the air chamber, rotating shafts are arranged on the two sides of the mounting plate, rotating grooves are formed in the two sides of the mounting groove, the mounting plate is rotationally connected with the rotating grooves through the rotating shafts, the power device comprises a driving motor and a transmission gear pair, a transmission groove is formed in the shell, the driving motor is arranged in the transmission groove, and a shell of the driving motor is fixedly connected with the transmission groove.

The invention discloses a disc spraying device. The device comprises a supporting part arranged in the inner wall of a tower body, a distribution disc is arranged on the supporting part, through the supporting part, the distribution disc is placed on the center of the tower body, a vertical liquid inlet pipe is arranged on the distribution disc, and is connected with a transverse liquid inlet pipe, multiple evenly-distributed overflow pipes are arranged at the position, on the periphery of the vertical liquid inlet pipe, of the distribution disc, the tops of the overflow pipes are lower than the height of the outer edges of the distribution disc, and the overflow pipes are spraying channels with liquid sprayed to padding. Liquid is evenly distributed, and is relatively concentrated to thecenter of a tower, liquid is prevented from flowing along the tower wall, that is the side flowing phenomenon, and the treatment capacity of the device is improved.

The invention discloses a soft package lithium battery which comprises a battery box and a modular soft package battery pack. The modular soft package battery pack is welded in the battery box; the outer wall of the modular soft package battery pack and the inner wall, welded with the modular soft package battery pack, of the battery box are made of weldable materials. The soft package lithium battery is small in size and convenient to install, and the soft package battery pack is firm in connection and good in heat dissipation after installation is completed.

The invention relates to a centering anti-eccentric anti-waxing sucker-rod coupling and belongs to the field of petroleum and gas development. According to a sliding and rolling combined friction way, a magnet anti-waxing body (8) is arranged below friction balls (10); a sucker-rod standard body (4) is designed according to a fluid mechanics principle and is combined with the sucker-rod coupling; with a water facing line (5), a water facing surface (6) and an overflow surface (7), the overflow area of a well liquid flow passage (3) is guaranteed and the liquid flow resistance is reduced, so that the sucker-rod standard body (4) becomes a standard part of the sucker-rod coupling; the resistance to well liquid by the sucker-rod standard body (4) is minimized; the rolling of the friction balls (10) plays a main role while sling friction surfaces (9) play a secondary role; the magnet is free of influence of wax, and the sucker-rod standard body (4) is designed according to the shape of a submarine, so that the resistance to the well liquid is reduced.

The invention discloses a modular soft package battery pack, which comprises a plurality of battery cells and a module shell, wherein all the battery cells are electrically connected through corresponding tabs, all the battery cells are fixed in the module shell, and the module shell is made of a weldable material. The invention further discloses electric equipment comprising the modular soft package battery pack. The modular soft package battery pack and the electric equipment provided by the invention have the advantages that the size is small, the splicing of a plurality of soft package battery packs and the fixing with a battery box are facilitated, the connection is firm after the plurality of soft package battery packs are spliced, and the heat dissipation performance is good.

The invention discloses a soft package battery module. The module comprises multiple battery cells, a module shell and a heat-conducting filler, wherein all the battery cells are electrically connected through corresponding tabs; all the battery cells are arranged in the module shell; the heat-conducting filler is arranged in the module shell; gaps between the battery cells and between the batterycells and the module shell are filled with the heat-conducting filler; all the battery cells are fixed by the heat-conducting filler; and the module shell is made of a heat-conducting material. The invention further discloses electric equipment comprising the soft package battery module. According to the soft package battery module and the electric equipment disclosed in the invention, the heat dissipation performance is good, abrasion caused by friction between the battery cells is avoided, and the soft package battery module is small in size and convenient to install and arrange.