31results about How to "Easy to intercept" patented technology

The application discloses a high-pressure injector for improving injection process sensing precision, relates to medical devices, and aims at the problem of edge effect of reflected light of a reflecting sheet in the prior art. The reflecting sheet is characterized in that the edge thereof is outwardly convex towards an infrared emission detection array. The advantage of the application is that the infrared light reflected at the edge will have an obvious mutation effect after the reflecting surfaces at both ends of the reflecting sheet are made outwardly convex, thereby reducing the edge effect in the original reflected light. The light intensity curve obtained by the infrared emission detection array will have an obvious mutation at the edge of the interval, and the electric control program of the machine head can easily and accurately intercept the required position interval for midpoint value taking.

The application discloses a kind of mountainous area highway slope rockfall protection equipment, including supporting mechanism;The supporting mechanism includes protection plate, and further include at least one first linear degree of freedom;At least four The protection plate is hinged between each other and is folded mutually;The technology of the application can flexibly unfold and adjust the position, angle and form of protection plate according to actual situation by the design of supporting mechanism, abutting mechanism and carrying mechanism.This makes the protection device can adapt to different shapes of slope and various rockfall angle, improves the overall adaptability.M type of unfolding mode makes impact force more evenly distributed on each folding layer, thereby reducing the risk of damage caused by excessive local stress.This helps to prolong the service life of protection plate, reduces maintenance cost.M type of unfolding mode makes the side with acute angle face the side of mountainous area slope rockfall, this design can better intercept and block rockfall.

The utility model relates to a heat supply unit automatic exhaust equipment technical field, specifically speaking is a kind of heat supply unit primary network supplement secondary network automatic exhaust device, including jar body, the water inlet pipe and water outlet pipe for supplementing water are provided in the jar body periphery;Water source after the turbulence of the type plate will enter conical pipe, the spiral groove of conical pipe inner periphery is convenient to the water source and makes water source form spiral force pass through conical pipe and enter the bottom side of jar body, simultaneously, small particle solid and float carried in water source can be thrown to the inner wall on the bottom side of jar body under the centrifugal force generated by spiral conveying, and it is convenient to settle in jar body bottom, and the conical pipe of conical structure is convenient to the interception of small particle solid and float, and the vertical pipe of ring seat inner periphery in the bottom of conical pipe can be convenient to the water source of reflux and spiral conveying and shunt, to further reduce the condition that small particle solid and float are moved by water source and move accordingly.

The utility model discloses a water filter which comprises a water inlet header pipe, a water outlet header pipe and a plurality of tank bodies, water inlet branch pipes are connected to the upper ends of the tank bodies, the upper ends of the water inlet branch pipes are connected with the water inlet header pipe, water inlet electromagnetic valves are arranged on the water inlet branch pipes, water outlet branch pipes are connected to the upper portion of the water outlet header pipe, and the upper ends of the water outlet branch pipes extend into the tank bodies and are connected with filters. The side face of the tank body is connected with a drainage pipe which is provided with a drainage electromagnetic valve. According to the utility model, water can be effectively filtered.

The utility model relates to the field of silver powder production, in particular to a cleaning suction filtration device for silver powder production, which comprises a cylinder, a separation cover is arranged at the center of the bottom of the cylinder, a bearing groove is arranged at the center of the outer wall of the top of the cylinder, a filtering structure is arranged in the bearing groove and the cylinder, and guide blocks are arranged at two ends of the inner wall of the bottom of the cylinder. A discharge pipe is arranged at the bottom of one side of the cylinder, the other end of the discharge pipe is connected with a separation assembly, and an auxiliary assembly is arranged at the top of the inner wall of one side of the cylinder. The inclined plate in the box body is matched with the filtering holes to conduct secondary filtering on liquid, the hole diameter of the filtering holes is smaller than that of the filtering cylinder, interception is facilitated, and the separation efficiency of silver powder is improved; the filter cartridge rotates in the cylinder, and the rotating cylinder throws out liquid, so that the solid-liquid separation efficiency is improved; liquid falls into the inner wall of the bottom of the cylinder and is guided into the discharge pipe by the guide block, so that solid-liquid separation is facilitated by gravity, and use is facilitated.

The utility model discloses a perfume mixing and blending bottle with multiple cavities for independent storage, and relates to the technical field of blending bottles. The device comprises a supporting frame, a bottle body is arranged on the supporting frame, a stirring assembly is arranged in the bottle body, the bottom of the bottle body is connected with a discharging assembly, the top of the bottle body is connected with a plurality of feeding assemblies, and the tail of the discharging assembly is connected with a filtering piece. A mixing and blending chamber and a plurality of fan-shaped storage chambers are arranged in the bottle body, the fan-shaped storage chambers are located above the mixing and blending chamber, and the lower portion of the stirring assembly is rotationally matched in the mixing and blending chamber. Through the up-down layered layout of the mixing and blending chamber and the fan-shaped storage chambers, different perfume raw materials can be conveniently and independently stored, one-way flow control is achieved, the lifting column is driven through the pressing piece, the action of driving the annular liquid taking groove to penetrate through the filling hole is achieved, and the perfume raw materials in the fan-shaped storage chambers are conveniently and quantitatively released into the mixing and blending chamber.

This invention provides a method for safety protection of slopes in inclined open-pit coal mines, comprising: S1: setting up a first safety retaining wall on a horizontal section to stop falling rocks from the side of the horizontal section away from the inclined slope; excavating a stepped stage on the upslope section and excavating multiple sequentially connected stepped sections on the middle slope section; S2: filling the multiple stepped sections to form a fill layer, the top surface of the fill layer connecting with the bottom surface of the stepped stage to form a horizontal placement section, the top of the fill layer having a first rock-blocking structure for stopping falling rocks from the upslope section; S3: setting up a rubble retaining wall and a second rock-blocking structure on the stepped stage to stop falling rocks from the stepped stage or the horizontal section; S4: setting up a second safety retaining wall on the bottom surface of the stepped section adjacent to the downslope section to stop falling rocks from above the downslope section. This solution can solve the problem in the prior art of the impact of falling rocks and other debris on coal mining equipment and personnel safety in inclined open-pit coal mines.

The present invention relates to a parking lock (1) for a transmission of a motor vehicle, the transmission having a parking locking gear (2), the parking lock including a pawl (3) configured to cooperate with the teeth of the parking locking gear (2) to release rotation of the parking locking gear (2) in an unlocked position, and to engage with the teeth of the parking locking gear (2) in a locked position and lock rotation of the parking locking gear (2), wherein the pawl (3) is operable via an operating unit (4) and is pivotally disposed at a first pin (6a) about a rotation axis (5); a first plate element (7a) and a second plate element (6a) are also included. Two plate elements (7b), the first plate element and the second plate element constituting for absorbing force when the pawl (3) engages in the teeth of the parking lock gear (2), wherein a first pin (6a) is received in a corresponding hole (8a, 8b) at each of the two plate elements (7a, 7b); and a second pin (6b) and a third pin (6c), the second pin and the third pin being received in holes (8c, 8d, 8e, 8f) at each of the two plate elements (7a, 7b) and constituting for supporting the two plate elements (7a, 7b) at the transmission housing (9).

The utility model relates to the technical field of coal mine crushing, in particular to a crushing device for coal mining, which comprises a fixing frame, a crushing frame, a driving device and a driving device, the crushing mechanism comprises two rotating shafts; the separating frame and the separating assembly are used for separating coal mines needing to be crushed according to the size, under the action of the multiple round rods in the separating assembly, the large coal mines can be intercepted, meanwhile, the coal mines with the maximum width smaller than the width between every two adjacent round rods fall onto a grating plate more dispersedly to be screened, and the screening efficiency is improved. The impact force of the coal mine on the grating plate is reduced, the grating plate is used for separating coal frames falling on the grating plate, the large coal mine enters the two first crushing rollers to be subjected to primary crushing, and the small coal mine and the coal mine crushed by the first crushing rollers enter the space between the two second crushing rollers to be crushed; the coal mine crushing effect is guaranteed, meanwhile, small coal mines are prevented from being excessively crushed, and meanwhile the coal mine crushing efficiency is improved.

The utility model discloses a base of submersible sewage pump, including body, cutter head and cutting knife, the body includes through -hole, and the cutter head includes upper cutter disc and lower cutter disc, and the upper cutter disc is arranged in the through -hole and is fixed with the body through bolt, and the upper cutter disc and lower cutter disc are connected through the connecting column, and the cutting knife is arranged between the upper cutter disc and lower cutter disc, and the upper cutter disc is equipped with the hole -through hole, and the connecting column is at least three and is along the axis of rotation symmetry of hole -through hole, and the hole -through hole is equipped with the connecting shaft fixed with the cutting knife, compared with prior art, the utility model can better handle the pollutant. For hard things such as stone, also can better intercept. The cutting knife is fixed with the connecting shaft through bolt, when installing cutting knife, first, the cutting knife is arranged between the upper cutter disc and lower cutter disc through the gap between two connecting columns, and the cutting knife is fixed with the connecting shaft through the hole -through hole.

The utility model relates to the technical field of spherical sunlight rooms, in particular to a door of a spherical sunlight room, which comprises a spherical sunlight room main body, a honeycomb frame is fixedly mounted on the upper side of the spherical sunlight room main body, a glass window is fixedly arranged on one side of the honeycomb frame, and two arc grooves are symmetrically arranged at two ends of the spherical sunlight room main body. According to the anti-theft door disclosed by the utility model, rainwater can be better intercepted by enabling the glass baffle plate which is adjusted by rotating downwards, so that the situation that the rainwater is in contact with the door is reduced, and the door can be protected; and then the glass baffle can further adjust the rain shielding angle to improve the rain shielding effect of the room door, the overall service life of the spherical sunlight room is prolonged, and a U-shaped rubber strip on the first glass door can be embedded into a U-shaped groove in the room door, so that the U-shaped rubber strip can play a role in sealing and heat preservation.

This utility model discloses a plasma cutting machine fume adsorption and purification mechanism, belonging to the technical field of plasma cutting fume adsorption and purification equipment. It includes: a worktable with two sets of sliding grooves inside, an electric support slidably mounted inside the two sets of sliding grooves, a cylinder fixedly mounted on the top of the electric support, a cutting blade fixedly mounted on the output end of the cylinder, a connecting frame fixedly mounted on one side of the support, and a dust suction hood fixedly mounted on one side of the connecting frame. This structure is simple and easy to operate, enabling quick installation and removal of the filter plate, timely cleaning or replacement of clogged filter plates, and ensuring that the purification mechanism always maintains good filtration performance. The primary filter plate, water mist purification, and secondary filter plate form a tight three-stage purification system, facilitating the interception of larger particles in the fume and the interception of remaining small particles and impurities not adsorbed by the water mist, greatly improving the cleanliness of the purified air.

The utility model discloses a kind of laser welding anti-splashing device and laser welding equipment, it is related to laser welding technical field, laser welding anti-splashing device includes workbench, laser welding body and nozzle, workbench is provided with placement surface, laser welding body is set in the above of placement surface, nozzle is set in the one end of laser welding body close to placement surface;Nozzle is provided with main gas path for laser beam to pass through and the first gas path of annularly arranged in the outside of main gas path, main gas path is used for conveying first welding shielding gas;First gas path is used for conveying auxiliary gas, and make the spray direction of auxiliary gas and the tangent direction of the corresponding position of main gas path consistent.The utility model discloses technical scheme by setting first gas path for making auxiliary gas to blow along the tangent direction of main gas path outside molten pool, different particle size molten metal particles can be thrown outside, thereby reduce the possibility that molten metal particles splash to nozzle and other vulnerable parts, extend the service life of nozzle and other vulnerable parts.

This utility model belongs to the technical field of steel grating, specifically disclosing a drainage ditch steel grating that is easy to clean. It includes a main body and seepage channels. Five sets of seepage channels are arranged between the front and rear of the main body. A left fixing block is fixed to the rear left side of the bottom of the main body, and a right fixing block is fixed to the rear right side of the bottom of the main body. A threaded rod is laterally movably connected between the left and right fixing blocks. This easy-to-clean drainage ditch steel grating utilizes the threaded rod movably connected between the left and right fixing blocks. Pushing the stop block horizontally towards the hidden slot above the slot exposes the handle. Rotating the handle rotates the second gear connected at the bottom, thereby pushing the first gear meshing on the left side. The threaded rod rotates between the left and right fixing blocks, and under the restriction of the front and rear limiting slots, pushes the stop plate horizontally to cover the seepage channels, or removes the stop plate to expose the seepage channels, thus solving the problem of inconvenient opening and closing.

The utility model relates to the technical field of rainwater collection, and provides a motor home rainwater collection device which comprises a water tank and further comprises a filtering assembly arranged in the water tank, the filtering assembly comprises two clamping grooves which are formed in the centers of the opposite faces in the water tank, and clamping plates are movably arranged in the two clamping grooves; the two filter screen plates are fixedly arranged on the opposite surfaces of the two clamping plates; the collecting assembly is arranged on the outer surface of the water tank; the two filter screen plates are embedded into the water tank through the clamping plates, the two clamping plates are embedded into the clamping grooves, the stability of the two filter screen plates can be improved, the two filter screen plates are more stably embedded into the water tank, collected rainwater is filtered, a certain gap is formed between the two filter screen plates, impurities in the rainwater are better filtered, and the rainwater collecting efficiency is improved. The filtering openings of the two filtering net plates are different, and the filtering holes close to the lower ends are small, so that small impurities in rainwater are intercepted, and the cleanliness of the rainwater is improved.

This utility model relates to the field of carton sealing machine technology, and in particular to a transport device for a carton sealing machine, including a carton sealing machine body, with a transport component provided at the right end of the carton sealing machine body. In this utility model, a transport device for a carton sealing machine is designed, utilizing a conveyor belt to transport boxes. An electric telescopic rod extends and retracts, guiding the boxes during movement via a guide plate. A bidirectional threaded rod rotates, driving two sets of moving blocks to move in opposite directions, thereby driving two sets of positioning plates to move in opposite directions to clamp and position the boxes, facilitating operation of the carton sealing machine body. A hand crank rotates, causing the inner rotating rod of the retractable belt to rotate, releasing the retractable belt. A locking block engages inside the box, facilitating the interception of the box by the retractable belt. A hydraulic cylinder drives a limiting block to engage on the outer wall of the retractable belt, providing a limiting effect.

The application discloses a kind of science and technology overloading non-field law enforcement equipment, belong to traffic management technical field.The science and technology overloading non-field law enforcement equipment, through infrared monitor, vehicle is monitored, and whether piezoelectric film sensor is detected vehicle is overweight, in overweight case, cooperate vehicle marking spray assembly and spray dangerous warning sign to vehicle rear, then can automatically mark overweight vehicle, facilitate remind other vehicles, and it is beneficial to road police to know overweight vehicle quickly, facilitate vehicle interception, secondly in rainy weather, with rainwater into water storage tank increases, press-down component controls telescopic rainproof assembly to be unfolded, telescopic rainproof assembly is shielded to piezoelectric film sensor, reduce the influence of rainwater on detection accuracy, maintain good detection environment, and water flow driving assembly drives transparent cylinder rotation can keep circumferential surface is realized automatic cleaning operation in rainy day by clean strip, avoid monitoring image to appear fuzzy, and it is beneficial to clean.

The utility model discloses a riverway floating object treatment device, relates to the riverway treatment technical field, the riverway floating object treatment device comprises an interception assembly and two collection assemblies, the interception assembly comprises a fixed frame and two installation rods, an interception net is fixedly installed in the fixed frame, a guide groove is fixedly installed on one side of the top end of the fixed frame, and a sliding block is installed in the guide groove in a sliding mode; a sliding frame is detachably installed at the bottom end of the sliding block, a hollowed-out plate is fixedly installed in the sliding frame, a roller brush is rotatably installed on one side of the sliding frame, and a third motor is fixedly installed at the top end of the sliding frame. The floating objects intercepted by the intercepting net can be pushed to the two ends of the fixed frame through the sliding frame, the hollowed-out plate and the roller brush, the floating objects in a river channel can be conveniently fished and collected, meshes of the intercepting net can be cleaned through the roller brush, the situation that the meshes of the intercepting net are blocked, and water flow passing is affected is prevented, manual cleaning is replaced, and the cleaning efficiency is improved. The efficiency is high.

The utility model discloses a filter bag that has the step-by-step filtration function relates to filter bag technical field, including fixed subassembly, filter subassembly and cleaning subassembly, fixed subassembly includes fixed cage frame and double-end stud, double-end stud is movably installed in fixed cage frame, filter subassembly is fixed in fixed subassembly, the cleaning subassembly is fixed in the fixed cage frame, the cleaning subassembly is fixed in the fixed cage frame, the filter subassembly is fixed in the fixed cage frame, the cleaning subassembly is fixed in the fixed cage frame, and the cleaning subassembly is fixed in the fixed cage frame. The filter assembly comprises a fixing frame, a first filter bag and a second filter bag, the first filter bag and the second filter bag are both fixedly installed in the fixing frame, the cleaning assembly is arranged in the fixing assembly and comprises a vibration piece, and the vibration piece is fixedly installed outside the fixing frame. The vibration piece is arranged on the upper surface of the filter screen, when air enters the fixed cage frame, the air firstly impacts the vibration piece to enable the vibration piece to vibrate, the contact pins on the vibration piece are in contact with the surface of the filter screen to enable the filter screen to shake, and dust is prevented from being attached to the surface of the filter screen to affect the smoothness of follow-up air circulation and the filtering effect.

The utility model discloses a soilless culture device for strawberry planting, which relates to the technical field of soilless culture equipment and comprises a water sump, a fixing table is mounted on the side wall of the water sump, a water pump is mounted on the outer wall of the fixing table, and a circulating hose is connected to the outer wall of the water pump. Through the arrangement of the cultivation bin, the limiting rod, the baffle, the positioning sleeve, the transmission motor, the half gear and the toothed plate, the transmission motor is started to drive the half gear to rotate, at the moment, the half gear drives the toothed plate to move upwards, when the toothed plate ascends to the top, the half gear rotates to the tooth-missing part, the toothed plate lacks upward power and falls downwards through gravity, and therefore the cultivation effect is achieved. And the baffle is beaten to enable the cultivation bin to generate vibration, so that aged and fallen root systems mingled in a root system group can be cleaned out through continuous vibration, centralized treatment is facilitated, and the situation that when the filter screen is cleaned, the missed aged root systems fall into the water bin, and blockage is caused is avoided.

This invention discloses an integrated ceramic catalytic filter tube, its preparation method, and its application, belonging to the field of industrial flue gas treatment. The integrated ceramic catalytic filter tube includes a ceramic filter tube substrate and a catalytic coating. The raw materials for the catalytic coating include a noble metal catalytic slurry and a vanadium-based catalytic slurry. The noble metal catalytic slurry includes a noble metal catalyst. The noble metal catalyst uses Nb-CeO2 / WO3 as a support and platinum and / or palladium as the active ingredient. The mass ratio between the active ingredient and the support is (0.1–0.15):1. The catalytic coating obtained by combining two different active catalytic slurries can compensate for each other's insufficient activity within different temperature ranges, improving the overall multi-pollutant removal efficiency of the catalytic coating. Furthermore, using a porous ceramic filter tube as the substrate material not only facilitates the distribution of the catalytic slurry but also helps retain particulate pollutants, achieving integrated denitrification and dust removal and efficient treatment of multiple pollutants in flue gas.

The invention discloses a layer type waste gas collecting and purifying device, and relates to the technical field of waste gas collecting and purifying, the layer type waste gas collecting and purifying device comprises a base and a waste gas collecting mechanism, the waste gas collecting mechanism is arranged on the outer side of the base, the waste gas collecting mechanism comprises a layer furnace, a shifting plate, a communicating hole, a condensing header pipe and a nitrogen header pipe, the shifting plate is arranged on the inner side of the layer furnace, and the communicating hole is communicated with the condensing header pipe. Condensed liquid impurities converge into a waste liquid box by means of gravity, the maintenance frequency of a filter screen is reduced, the continuous operation duration is prolonged, the purification efficiency is improved, and the multi-layer furnace is adaptive to the mass production working condition by adopting global synchronous transmission, dead-corner-free gas collection of upper and lower stirring plates and independent pressure regulation of the multi-layer furnace. The transmission life is prolonged through two-stage filtration and chain groove protection, assembly and maintenance are facilitated through an integrated connecting plate, oxygen supply and gas collection are integrated through structure synchronization, equipment is simplified, and cost is reduced.

The present application relates to the technical field of powder barrels, and particularly relates to a novel material barrel special for powder, which comprises connecting blocks one, telescopic air cylinders, a connecting plate, a long rod and a piston block; a plurality of connecting blocks one are arranged above a cylinder; one telescopic air cylinder is fixedly connected to each connecting block one; the telescopic ends of all the telescopic air cylinders are fixedly connected with the connecting plate; the long rod is connected to the connecting plate and passes through the middle of the cylinder; the lower end of the long rod is connected with the piston block, and the cylinder is blocked by the piston block. The long rod high-frequency drives the powder in the cylinder to break the "bridge" and "mouse hole" phenomenon of the powder, so that the powder can be smoothly discharged. Meanwhile, the long rod cooperates with the piston block to limit the cylinder with a downward tendency and prevent it from falling to the ground, so that the safety is high. In addition, the long rod and the piston block are also used to open and close the lower opening of the cylinder, and no other valve parts are needed, so that the structure is ingenious.

The utility model relates to the technical field of dust and waste gas filtering and separating, and discloses a dust and waste gas filtering and separating device which comprises a supporting seat, a waste gas filtering and separating mechanism is arranged at the top of the supporting seat, a collecting mechanism is arranged on the right side of the waste gas filtering and separating mechanism, and the waste gas filtering and separating mechanism comprises a mounting seat. The mounting seat is fixedly connected to the top of the supporting seat, a cylinder is fixedly connected to the top of the mounting seat, and a spiral separator is rotationally connected into the cylinder. According to the dust and waste gas filtering and separating device, extra energy is obtained through heat dissipated by the heating plate and molecules in dust and waste gas, the movement speed is remarkably increased, and collision among the molecules is more frequent; by means of the spiral separator and the cloth dust bag, dust particles which are small and easy to escape originally are gathered to form large particles, so that the dust particles are separated by the spiral separator and intercepted by the cloth dust bag more easily, and the efficiency of filtering and separating dust waste gas is greatly improved.

This utility model relates to an aluminum tube polishing device, belonging to the field of aluminum tube polishing technology. The aluminum tube polishing device includes: an operating table with a polishing mechanism mounted on its top; a cleaning mechanism; and two rotating brush rollers that effectively clean debris adhering to the surfaces of the polishing wheel and guide wheel, causing the debris to detach from these surfaces. A blower creates negative pressure within a collection box, allowing two fixed frames to attract and collect the cleaned debris, ensuring effective debris collection. During rotation, the brush rollers contact with prying blocks, which reciprocate to bend and deform the bristles, further detaching debris and attracting it to the collection box under the influence of airflow. This keeps the brush rollers clean throughout the cleaning process, ensuring effective cleaning of the polishing wheel and guide wheel surfaces, thus guaranteeing a successful polishing of the aluminum tube.

This utility model discloses an oil separation device for AKD production, including a processing box, a partition, a quick-release mechanism, filter elements, and a pretreatment mechanism. After the processing box is stabilized by a support frame, a partition is placed horizontally inside. Multiple filter elements are fixed to the top surface of the partition via the quick-release mechanism, arranged sequentially. Each filter element extends below into a clean water chamber below the partition. A wastewater valve is connected to the side wall of the processing box to discharge impurities isolated by the filter elements. A pretreatment mechanism is installed on the processing box; wastewater passes through the pretreatment mechanism to break up the emulsion before entering the processing box. The advantages of this utility model compared to existing technologies are: the pretreatment mechanism breaks down the emulsion structure, making it easier for oil to be retained by the membrane, thus improving processing quality; the quick-release mechanism of the filter elements facilitates replacement, ensuring subsequent processing efficiency while improving subsequent processing effects.

The foreign matter intercepting device based on the water conservancy project comprises a base and a fixing frame, the fixing frame is arranged on the side face of the base, a square frame is arranged in the fixing frame, a filtering net plate is arranged in the square frame, a reinforcing plate is arranged in the square frame, a threaded column is arranged in the reinforcing plate, and the threaded column is connected with the filtering net plate. And the outer part of the threaded column is in threaded connection with a locking nut. According to the foreign matter intercepting device based on the water conservancy project, the reinforcing plate is arranged in the square frame, so that soft plastics such as plastic bags can be conveniently intercepted, before the intercepting device is used, a threaded column is taken out and penetrates through the reinforcing plate, and then a locking nut is screwed to fix the intercepting device, so that a hanging rod structure can be mounted in the square frame; and during use, foreign matters such as plastic can be conveniently intercepted.

The application discloses a method for preparing a polyquaternary ammonium nanofiltration membrane based on a Stober gold reaction interface polymerization, which comprises the following steps: dissolving a surfactant in a tris(2-dimethylaminoethyl) aqueous solution to prepare an aqueous monomer solution; using a 1,3,5-tris(bromomethyl)benzene n-heptane solution as an oil monomer solution; and causing the aqueous monomer solution and the oil monomer solution to undergo a Stober gold reaction and rapid cross-linking to form a polymer network at an oil-water interface, thereby constructing an ultrathin polyquaternary ammonium separation layer on the surface of a base film and preparing the polyquaternary ammonium nanofiltration membrane. The polyquaternary ammonium nanofiltration membrane has a narrow pore size distribution and a high positive electric density, and can thus synergistically enhance the size screening effect and the Donnan effect, thereby achieving excellent water flux and divalent cation rejection. In addition, the polyquaternary ammonium nanofiltration membrane does not contain easily hydrolyzable groups and has good acid-base stability. The polyquaternary ammonium nanofiltration membrane can be applied to nanofiltration treatment of salt lake water and lithium battery positive electrode material leaching liquid, realizes double-source lithium extraction, and has a simple preparation process and is easy to prepare on an industrial scale.

The utility model provides novel glass fiber plate edge grinding equipment for producing a central control panel of an automobile, belongs to the technical field of glass fiber plate processing, and aims to solve the problems that a filter bag or a filter screen of the conventional novel glass fiber plate edge grinding equipment for producing the central control panel of the automobile is easily blocked by grinding dust and needs to be frequently maintained. Comprising a fixed base, at least two groups of vibrators, a dust collection grinding machine, a primary filter, a primary interception assembly and a dust treatment assembly, the two groups of vibrators are fixedly mounted on the inner side of a roll shaft conveying mechanism, and each group of vibrators is located in the middle of two groups of conveying roll shafts; the dust collection polisher is fixedly mounted on one side of the roll shaft conveying mechanism; the primary filter is mounted in the middle of the air exhaust pipeline, and the primary interception assembly is arranged in the primary filter; and the dust treatment assembly is arranged in the roll shaft conveying mechanism. The dust collector has the advantages of convenience in maintenance, dust interception, reduction of dust adhesion and the like.

The present application relates to the field of forming a grid-shaped filling element or assembly element in a mass transfer or heat transfer device, in particular to a structured packing for gas-liquid mass transfer. The structured packing for gas-liquid mass transfer comprises a frame (1) and a packing (2), the packing (2) is arranged on the frame (1), characterized in that: the frame (1) comprises a top ring (11), a bottom ring (12) and an inner frame (13), the top ring (11) and the bottom ring (12) are arranged parallel to each other and the top ring (11) is arranged above the bottom ring (12), the inner frame (13) comprises at least two support units (131), the top edge and the bottom edge of each support unit (131) are fixed on the top ring (11) and the bottom ring (12) respectively, and the packing (2) is wrapped on each support unit (131) respectively. The present application has the beneficial effects of large gas-liquid flux, small tower resistance, high heat and mass transfer efficiency, low price and easy maintenance.