42results about How to "Uniform flow" patented technology

The utility model relates to the technical field of green wall, concretely is composite wall greening device, including wall, mounting beam, bearing assembly and liquid supply component, the wall front is provided with several groups mounting beam, the mounting beam front is provided with several groups T shape mounting hole, the bearing assembly includes connecting piece and bearing frame, the bearing frame is connected with the mounting beam through the connecting piece, the connecting piece includes plug -in block, worm wheel, worm, handle, screw rod and fixed block, this composite wall greining device, rotates handle drive worm rotation, drives worm wheel synchronous rotation, screw rod promotes fixed block horizontal movement and embeds mounting beam clamping groove, forms mechanical locking, when disassembling, reverse rotation handle, fixed block retracts, and plug -in block can directly pull out, and convenient replacement bearing frame, the liquid supply pump is automatically regulated output pressure according to module quantity, and the shunt pipe ensures each output head flow even, and the output head is equipped with the on -off valve, and it is convenient to carry out even liquid supply to bearing frame.

The utility model discloses a batch rectifying tower dosing device of a rectifying tower, which belongs to the technical field of rectifying tower feeding and comprises a rectifying tower body, a storage tank is arranged on one side of the rectifying tower body, and a conveying pipeline is connected between the storage tank and the rectifying tower body. According to the rectifying tower, the thickness of raw materials entering the rectifying tower body is shared through the refining cavity, then the raw materials slowly flow down along the inner wall of the rectifying tower body through the flow dividing pipe, and in the process, the raw materials are separated from the rectifying tower body through the flow dividing pipe, so that the raw materials are separated from the rectifying tower body through the flow dividing pipe. According to the rectifying tower, large-area contact between raw materials and gas-phase or liquid-phase substances can be avoided, the contact time of the raw materials and the liquid-phase substances can be prolonged, the temperature of the raw materials cannot be greatly affected when the raw materials are preheated on the inner wall of the rectifying tower body and make contact with the liquid-phase substances, liquid medicine is evenly distributed, and the liquid medicine cannot be covered in the flowing process.

This application relates to heat dissipation and discloses a liquid cooling plate for cooling a battery module. It has a flow channel and an injection port and an outlet connected to the flow channel, with refrigerant injected into the flow channel. The flow channel includes: an inlet end of a supply flow channel connected to the injection port; a main flow channel including at least two heat dissipation flow channels, each connected to the outlet end of the supply flow channel; and a confluence flow channel whose inlet end is connected to the outlet end of the heat dissipation flow channel, and whose outlet end is connected to the outlet, so that the refrigerant in the heat dissipation flow channel is discharged from the outlet through the confluence flow channel. Each heat dissipation flow channel can be connected to the outlet through one confluence flow channel; or, every two heat dissipation flow channels can be connected to the outlet through one confluence flow channel, and when two heat dissipation flow channels are connected to the outlet through one confluence flow channel, the two heat dissipation flow channels are located on opposite sides of the inlet end of the confluence flow channel. This ensures that the refrigerant is evenly distributed within the flow channel, avoiding uneven heat dissipation and improving uniformity.

The utility model discloses an industrial solid waste recycling and separating device which comprises a vertical plate, the upper surface of the vertical plate is fixedly connected with a top plate, the top plate is fixedly connected with a feeding hopper, the side surface of the vertical plate is fixedly connected with a connecting plate, and the upper surface of the connecting plate is fixedly connected with a vibration motor. The output end of the vibration motor is fixedly connected with a material receiving box, the upper surface in the material receiving box is fixedly connected with a material guide block, the two sides of the material guide block are fixedly connected with guide plates, the ends, close to the top plate, of the two guide plates are wide, the ends, away from the top plate, of the two guide plates are narrow, and a magnetic attraction mechanism is arranged at the tail end of the material receiving box. Solid waste can be better dispersed on the material receiving disc, the solid waste can be guided to stably and uniformly flow to next treatment equipment, and accumulation and blockage are reduced.

The box-type laminated heat exchanger with the novel fin structure is composed of a plurality of heat exchange plates which are provided with box-shaped inclined planes and can be sequentially laminated together, and corner holes for heat exchange media to circulate and heat exchange devices for dividing wall heat exchange are arranged in layers formed by mutually sealing, laminating and connecting the box-shaped inclined planes of the heat exchange plates. The heat exchange device is located in the middle of each heat exchange plate, the corner holes are distributed in the two ends of each heat exchange plate, and corner hole base plates connected with the upper heat exchange plate and the lower heat exchange plate in a sealed mode are arranged in the spaces formed by the corner holes and the peripheral extension faces at the two ends of each heat exchange plate. The fins in the heat exchange devices and the fins on the peripheries of the corner holes are made into a combined integral fin structure.

The utility model provides a radiator mold, a radiator and electronic equipment, the radiator mold comprises an upper mold, a lower mold and a support pillar structure, the upper mold is provided with a plurality of pillar holes, the plurality of pillar holes are arranged at intervals to form a growth area, and the position, corresponding to the growth area, of the lower mold is used for placing a to-be-processed plate. The top column structure comprises a first sub-part, the first sub-part comprises a plurality of first top columns and a first substrate, the first top columns are connected to the first substrate, the first top columns are arranged around the edge of the growth area, the first top columns correspond to column holes in the edge of the growth area in a one-to-one mode, the first top columns are inserted into the corresponding column holes, and the first substrate is arranged on the first sub-part. The first base plate is movably arranged on the upper die along the forming path of the column hole, the upper die is further provided with an elastic piece, and the elastic piece is located on the moving path of the first base plate and used for providing pressure towards the lower die for the first base plate. When the radiator die is used for forging a radiator, the overall yield of the radiator can be remarkably improved, returned materials are reduced, and the forging tonnage and the forging difficulty can be reduced.

The application relates to the technical field of building construction, and discloses a pump pressure feedback type rheological control device for underwater super high performance concrete, which comprises a rack, a pouring tank arranged on the rack, a pumping machine arranged on one side of the rack, a regulating mechanism arranged in the pouring tank, a pressure sensor fixedly arranged at the bottom of the telescopic sleeve, and a probe of the pressure sensor flush with the bottom of the telescopic sleeve. The pump pressure feedback type rheological control device for underwater super high performance concrete can detect the concrete pressure in real time and send an electric signal when the pile body construction approaches the top, so that the pumping machine is driven to regulate the pump pressure and reduce the concrete conveying amount; meanwhile, the electric telescopic device is used to push the telescopic sleeve to move downward and reduce the feeding port, the concrete inflow speed is slowed down, the flow is more uniform, and through the pump pressure feedback type rheological control mechanism, the rheological state of the underwater super high performance concrete can be accurately fed back and effectively controlled.

The utility model relates to the technical field of coal mill, specifically is coal mill nozzle ring, including dynamic ring and static ring, wherein: dynamic ring and static ring adopt up and down installation mode, static ring is located above dynamic ring, and the clearance between both is 5mm, further, the dynamic ring outer wall board is changed to curved arc board from traditional vertical flat plate, and the whole is horn mouth shape, the curved arc board design of dynamic ring effectively reduced the flow resistance of hot air in nozzle ring, and the air volume and air pressure of hot air were strengthened, specifically, the shape of curved arc board makes hot air more smoothly flow when passing through nozzle ring, avoids the problem that hot air flow efficiency reduces because of too big wind resistance in the traditional vertical flat plate design, especially, the thickness of dynamic ring is 12mm, guarantees the structural strength and lightens the overall weight simultaneously, thereby reduces the energy consumption when the equipment runs.

The utility model discloses a granulator with plug -in distributor relates to granulator technical field, including granulator body, the granulator body upper end is provided with the support box, is provided with plug -in distributor mechanism in the support box, and plug -in distributor mechanism includes: distribution shell, distribution shell lower port is located on the granulator body upper end, distribution board is inserted in the distribution shell. The utility model discloses design structure is reasonable, it can make distribution shell, distribution board produce high -frequency reciprocating motion through drive motor, and thus break the " static accumulation tendency " of material on distribution board through the continuous displacement change, avoid material and concentrate accumulation in the local area of distribution board because of gravity or viscosity, can significantly improve material distribution uniformity, simultaneously, the " mechanical vibration effect " of high -frequency displacement produces, can make the material that sticks in the hole edge drop, can reduce the risk of blockage, improve the continuous operation ability of equipment.

The utility model discloses an anti-deformation cosmetic aluminum pressing bottle relates to cosmetic packing technical field, this aluminum pressing bottle includes bottle body and is located on the bottle cap of bottle body still includes anti-deformation subassembly, pressure equalizing subassembly, pressing head subassembly and pressing drag reduction subassembly. The utility model bottle body adopts the composite structure of outer layer grid reinforcement, inner layer honeycomb buffer and annular reinforcing rib, and the compression strength and the anti-deformation ability of bottle body in each direction are improved greatly, the hemispherical recess of bottom, arc reinforcing rib and annular boss further optimize the mechanical property, and the effective resistance of external force impact is guarded, the pressing bottle is through the cooperation helical flow guide vane and shunt hole design of main guide vane and auxiliary guide vane, realizes the helical mixing and uniform flow of liquid, and the pressure distribution in bottle is more uniform in the pressing process, and the pressing hand feeling is comfortable.

The present application relates to the technical field of air purifiers, and specifically provides a wind channel assembly, an air purifier and a wind channel assembly control method.The wind channel assembly comprises a centrifugal fan, a first shell and a flow guide piece;the centrifugal fan is provided in multiple parallel and sequential intervals;the first shell is arranged outside the centrifugal fan and is connected to the centrifugal fan;the first shell is provided with multiple wind channels corresponding to the centrifugal fan in one-to-one correspondence;the wind channel comprises a first air inlet and multiple first air outlets;the first air inlet is used for introducing airflow filtered by a target filter with a target resistance into the wind channel;the multiple first air outlets are arranged on the outer periphery of the centrifugal fan;the flow guide piece is arranged in the first shell and is connected to the first shell;the flow guide piece is arranged between two adjacent centrifugal fans to separate the wind channels;the flow guide piece is provided with flow guide concave arc surfaces on both sides, and the flow guide concave arc surfaces are configured to guide the airflow of a target fan to the first air outlet. The present application can provide large airflow while taking into account low noise and energy consumption.

The utility model relates to positioning pin technical field discloses a kind of quick replacement positioning pin of oil press mould, including pin body, the bottom of pin body is equipped with pre-install seat, the both sides of pre-install seat inner wall are all set with connecting groove, the inner wall of two connecting grooves is all installed with limiting component, the both sides of pin body bottom are all set with limiting slot, the top of pin body is set with lubricating groove, and the limiting component includes spring piece, limiting piece and unlocking assembly, the spring piece is fixedly connected to the side of limiting slot inner wall. In the utility model, when oil press replaces different mould, the pin body of the positioning pin can be quickly disassembled, the working efficiency is improved, the lubricating groove of spiral shape is set on the positioning pin, the retention of lubricating grease is facilitated, the replenishment frequency can be reduced, and when being inserted with the positioning hole on the mould, the lubricating grease can be uniformly flowed to the surface of pin body after being extruded, and the lubrication effect is better.

The application relates to a fertilizer particle cooling device for fertilizer production, which comprises a conveyor for conveying the granular fertilizer, a feeding hopper for feeding on both ends of the conveyor, and a guide frame for discharging on both ends of the conveyor, a discharge port for discharging is formed in the feeding hopper, an adjusting unit is slidably arranged on the discharge port, a cooling bin is arranged on the conveyor, and a cooling unit is arranged on the cooling bin; two material distribution mechanisms are oppositely arranged in the cooling bin, the material distribution mechanism comprises a fixed plate arranged above the inner wall of the cooling bin, the size of the discharge port can be flexibly adjusted through the adjusting unit, so that the flow of the fertilizer particles falling from the feeding hopper to the conveyor is kept balanced, the fertilizer particles can be dispersed through the material distribution mechanism, gaps are formed among the fertilizer particles, the contact area of the fertilizer particles and the cooling gas is increased, and the cooling effect is improved.

The utility model provides a high-strength water pool filter element end cover, and relates to the technical field of filter element end covers. A set of second round holes are formed in the bottoms of the inner walls of the first mounting groove, movable columns are movably inserted into the inner surface walls of the second round holes, a top plate is fixedly mounted between the tops of the movable columns, and an extrusion plate is fixedly mounted between the bottoms of the movable columns. According to the utility model, a worker can easily inject glue into the reinforcing end cover through the one-way valve, the worker only needs to push the clamping block, so that the top plate can drive the movable column and the extrusion plate to descend, and the glue in the liquid storage cavity breaks through the sealing film under uniform pressure and quickly and uniformly flows to the contact surface of the reinforcing end cover and the filter element; compared with the prior art, time and energy of manual smearing are remarkably reduced, working efficiency is improved, meanwhile, the situation that the bonding quality is not high due to manual smearing is avoided, and the overall performance and sealing performance of the filter element are improved.

The utility model relates to the technical field of electroplating, and discloses electroplating equipment and a conveying mechanism thereof. The conveying mechanism comprises a shell, a first material opening, a conveying channel and a second material opening which are sequentially communicated are formed in the shell, and the second material opening is adjacent to and communicated with an electroplating bath of the electroplating equipment; the conveying device is installed in the conveying channel and used for conveying the materials from the first material opening to the second material opening, a water retaining assembly is arranged between the conveying device and the second material opening, and a passing gap allowing the materials to pass through is defined in the water retaining assembly; the suction knife assembly comprises a pump body, a liquid suction pipeline and a suction knife body, the suction knife body is installed between the conveying device and the second material opening and is adjacent to the water retaining assembly, and a water suction opening of the suction knife body is communicated with the passing gap. According to the utility model, by introducing the suction knife assembly and the design of dynamic communication between the suction knife assembly and the passing gap, the defects of the existing electroplating equipment conveying mechanism in the aspects of overflow liquid recovery, material pollution control, maintenance cost and the like are overcome.

The application discloses a commodity recommendation method and system based on a collaborative filtering model, comprising a data collection module for collecting data of users and commodities in an e-commerce platform scene; a data preprocessing module for preprocessing the collected data; a collaborative model training module for training recommendation results based on a user behavior collaborative filtering model; a model verification module for verifying whether the recommendation results conform to the user behavior trend; and a deep formulation module for secondary training to formulate deep personalized commodity specification recommendations, using data mining and machine learning technology to analyze the data, thereby extracting user features, commodity features and scene features, establishing a user-specific interest preference model, and finally finding the commodities of interest to the user from the massive commodities to meet the personalized needs of the user. The application has the characteristics of strong practicability and high personalization.

The utility model relates to road construction equipment technical field, and disclose a kind of asphalt cold patch laying device for road construction, including: fixed bracket, the inside of the fixed bracket is provided with limiting groove.This asphalt cold patch laying device for road construction realizes the synchronous of cold patch laying and compaction operation, changes the single function of traditional laying device, needs the drawback of step-by-step operation, when drive motor operates, transmission system can drive ramming plate repeatedly up and down movement, in the process of device forward movement continuously compacts asphalt cold patch, the device need not operator frequently change equipment or secondary operation, greatly simplify construction procedure, effectively reduce construction time, meet the demand of road rapid repair, restore traffic, and device realizes automatic movement and compaction by mechanical transmission, reduce the strength of manual operation, reduce equipment investment cost, with efficiency and economy, provide innovative and practical solution for road maintenance work.

The heat exchanger comprises a plurality of heat exchange units which are connected in series, each heat exchange unit comprises a hollow shell, a flow channel is arranged in the shell, a plurality of liquid cooling pipes are arranged in the flow channel, and an inlet used for receiving heat exchange liquid and an outlet used for discharging the heat exchange liquid are formed in the outer portion of the shell. And the inlets and the outlets of the adjacent heat exchange units are communicated.

The invention relates to a radiator assembly for a vehicle, having a radiator with at least one radiator body, the radiator body having at least two coolant channels extending spaced apart from one another and a plurality of ribs extending between the at least two coolant channels, wherein a gap for the flow of cooling air is formed between each two ribs of the plurality of ribs, the radiator assembly further having a radiator fan module comprising at least one fan wheel for influencing a flow of cooling air in the direction of the radiator body, on the radiator body the plurality of ribs extending between the two coolant channels is divided into at least two different radiator regions, wherein, in an observation direction along the direction from the radiator fan module towards the radiator body, the radiator fan module at least partially covers a first radiator region of the at least two different radiator regions and, in comparison with a second radiator region of the at least two different radiator regions, in the first radiator region a gap width of the gap present between the two ribs is greater.

The utility model relates to an energy storage box and a flow-equalizing and liquid-separating structure for refrigerant liquid feeding of the energy storage box, the flow-equalizing and liquid-separating structure introduces a refrigerant from the outside of the energy storage box and disperses the refrigerant to the periphery of the energy storage box through the cooperation of a main liquid inlet flow channel and a plurality of secondary liquid inlet flow channels, and then the refrigerant is matched with a plurality of liquid-separating outlets in branch flow channels, so that the refrigerant is separated from the energy storage box. By means of the design, the requirement for multi-hole flow equalization is simplified into the requirement for flow equalization of a small number of holes, the flow equalization difficulty is reduced, then flow resistance equalization of different liquid outlet holes can be rapidly and simply achieved, the heat dissipation difference, caused by uneven refrigerant distribution, of the battery cell can be avoided, and the service life of the battery cell is prolonged. The overall heat dissipation effect and stability of the battery pack are improved, and the service life of the battery is prolonged.

The application discloses a biosafety cabinet, which comprises a main cabinet body (1), an exhaust bottom cover (2) and an exhaust top cover (3) arranged on the upper portion of the main cabinet body (1), and a filter (4) arranged at the port of the exhaust top cover (3); an exhaust fan (5) is arranged between the exhaust top cover (3) and the exhaust bottom cover (2), and the exhaust fan (5) is used for sucking the waste gas generated in the main cabinet body (1) to the filter (4); a guide frame (6) is arranged at the air inlet of the exhaust top cover (3), and a plurality of guide leaves (7) which synchronously and reciprocally swing are uniformly arranged in the guide frame (6); and a main support (8) is arranged in the exhaust top cover (3). The exhaust fan is combined with the guide leaf structure, the waste gas emission efficiency is improved, the filtering effect of the filter core is optimized, and the utilization rate of the filter core is improved.

The utility model discloses a small-sized magnetic separator which comprises a lower barrel body, a connecting flange arranged at the top of the lower barrel body, an upper barrel body connected with the connecting flange, an air cylinder sleeve arranged in the lower barrel body, a lifting air cylinder arranged in the air cylinder sleeve, a magnetic bar connected with the lifting air cylinder and inserted in a magnetic bar sleeve in a lifting manner, and a magnetic rod arranged in the magnetic bar sleeve. The magnetic bar sleeve penetrates through the connecting flange, is inserted into the lower barrel body and is hermetically connected with the connecting flange; a water inlet and a water outlet are formed in the lower barrel body, the water inlet is connected with a perforated plate, a diverging pipe and a honeycomb fluid director, the honeycomb fluid director is connected with the lower barrel body and communicated with the interior of the lower barrel body, and a plurality of inclined guide plates are arranged in the lower barrel body up and down and used for guiding water flow introduced by the honeycomb fluid director to the magnetic bar sleeve in a layered mode; the water outlet is connected with a water outlet pipe and a blow-off pipe which are provided with valves. The device is simple and compact in structure, small in size, low in use cost, suitable for small-flow working conditions and capable of achieving uniform layered water inlet and effectively improving the separation efficiency.

The utility model discloses a multilayer absorption's adult paper diaper, including paper diaper body, the inside of paper diaper body is covered with cotton core, paper diaper body is equipped with liquid -permeable layer, antibacterial layer, flow guide layer, impermeable layer and breathable bottom membrane layer from top to bottom in proper order, the cotton core includes first wood pulp mixed high molecular water absorbing resin layer, high molecular water absorbing resin layer and second wood pulp mixed high molecular water absorbing resin layer from top to bottom in proper order, the upper surface of cotton core is equipped with a plurality of convex, the intercommunication flow guide channel is formed between the convex. The utility model discloses convenient to use, and cotton core water absorption is big, and the better breathability, and the low production cost is made simultaneously, and the flow guide channel will excrement rapid flow guide even, and is fully absorbed by cotton core, has solved the problem of slow absorption, poor flow guide effect and small absorption, and the antibacterial layer has the effect of antibiosis, effectively prevents the emergence of rash, itching, peculiar smell and other discomfort, improves user's use comfort, and uses the peace of mind.

The application relates to the technical field of heat storage and heat exchange, and provides an electric heating and heat exchange integrated coil pipe and a steam generating device, which comprises at least one container filled with heat storage medium, at least one group of coil pipes, a power supply interface, an input pipeline, an output pipeline and a control unit, the power supply interface is connected with a power regulation device, the coil pipe is embedded in the heat storage medium, and the electric energy output end of the power regulation device is electrically connected with the coil pipe; the input pipeline is communicated with the input end of the coil pipe; the output pipeline is communicated with the output end of the coil pipe; and the control unit is used for executing switching control between a charging state and a heat release state, power regulation, flow regulation and safety protection. The electric heating and heat exchange integrated coil pipe and the steam generating device have the coil pipe with the functions of electric heating and heat exchange integrated into one, direct heating improves the heat exchange efficiency, and the electrical adaptability is high.

The invention discloses an ink supply control system and method, and belongs to the technical field of ink-jet printing. The ink supply control system comprises an ink supply device and an air pressure control device; the ink supply device comprises a nozzle, a first ink bottle and a second ink bottle, the first ink bottle supplies ink to the second ink bottle through a first ink supply pipeline, the second ink bottle supplies ink to the nozzle through a second ink supply pipeline, and a flow sensor is arranged in the second ink supply pipeline; the air pressure control device comprises a positive pressure air path, a negative pressure air path, a piezoelectric proportional valve and a control unit; the piezoelectric proportional valve is linked with the positive-pressure and negative-pressure gas circuit, and real-time detection of the flow sensor is combined, so that the control unit can adjust the gas pressure in the second ink bottle in real time according to the actual flow, the ink flow of the spray head is accurately regulated and controlled, and the stable and accurate ink supply flow of the spray head is kept. According to the ink supply control system, the problem of ink outlet fluctuation caused by external disturbance is solved, high precision and high stability of ink supply of the spray head are achieved, and the requirement of a high-precision printing process is met.

This utility model discloses a heat exchanger and an air conditioner having the same. The heat exchanger includes a heat exchange section and an inlet section. The heat exchange section has multiple refrigerant channels, and the inlet section includes a main pipe and multiple branch pipes. The branch pipes are connected to the multiple refrigerant channels. The two ends of the main pipe are an upstream end and a downstream end, respectively. The branch pipes are spaced apart along the length of the main pipe and are all connected to the main pipe. The main pipe has a reduced diameter section, and the flow area of ​​the main pipe decreases at the reduced diameter section from the upstream end to the downstream end. At least one branch pipe is arranged upstream and downstream of the reduced diameter section. In the above technical solution, the inlet section has a simple structure, does not require a distributor, occupies little space, is easy to arrange, and can save production and assembly costs. Furthermore, by setting a reduced diameter section in the main pipe of the inlet section, the flow velocity of the refrigerant flowing through the reduced diameter section increases, the dynamic pressure increases, and the static pressure decreases, resulting in a more balanced flow rate in the branch pipes along the main pipe, which is beneficial to improving the heat exchange effect of the heat exchanger.

The utility model discloses a photovoltaic panel edge rainwater-collecting flow-guiding synergistic structure for grass-light complementation, which relates to the technical field of grass-light complementation, and adopts the technical scheme that the photovoltaic panel edge rainwater-collecting flow-guiding synergistic structure comprises a photovoltaic panel body, a water accumulation frame is fixedly arranged on the outer side of the photovoltaic panel body, a filter screen is arranged at the bottom of the water accumulation frame, and positioning rods are arranged on two sides of the water accumulation frame; the outer sides of the two positioning rods are sleeved with supporting frames, the supporting frames are movably connected with the positioning rods through rolling bearings, the cleaning mechanism is arranged at the bottom of the water accumulation frame and used for cleaning impurities such as leaves in the water accumulation frame, and the flow guiding mechanism is arranged at the bottom of the photovoltaic panel body and used for guiding the impurities in the water accumulation frame. The photovoltaic panel water collection irrigation device has the advantages that the photovoltaic panel water collection irrigation efficiency is greatly improved, meanwhile, the structural design of the shielding plate and the spring hinge is adopted, impurities such as leaves can fully fall off, and rainwater cannot be discharged from the shielding plate.

The utility model discloses an elevator hand strap raw material impurity automatic screening equipment relates to screening equipment technical field, including screening box and bottom plate, said bottom plate is located the lower position of screening box, and the upper surface of bottom plate close to the corner position of all around is fixedly connected with connecting column, connecting column between the connecting column and screening box is connected with vibrating spring, the vibrating spring is connected with the vibrating spring. A feeding hopper is fixedly mounted at the top of the screening box, a first discharging hopper and a second discharging hopper are fixedly connected to the end of the screening box, and the second discharging hopper is located below the first discharging hopper. According to the automatic screening equipment for the impurities of the escalator hand strap raw materials, the screening net plate of the screening equipment can be corrected and abut against each other, deformation of the screening net plate can be avoided, the screening work efficiency of the screening equipment is improved, the hand strap raw materials entering the screening equipment can be evenly guided, and the screening efficiency is improved. And the situation that raw materials of the hand strap are not uniformly distributed can be prevented.

The invention discloses a high-wettability gradient aperture composite diaphragm and a preparation process thereof. The diaphragm comprises a polyolefin base membrane layer and a synthetic fiber web layer prepared by a spunlace process, the overall thickness of the diaphragm is 8-12 [mu] m, the aperture of one side facing the positive electrode is 30-50 nm, and the aperture of one side facing the negative electrode is 50-100 nm; and the synthetic fiber web layer contains a tannic acid modifier. The tannic acid modified synthetic fiber web layer in the composite diaphragm can provide better wettability for the composite diaphragm, and polar functional groups on the surface of the tannic acid modified synthetic fiber web layer can homogenize lithium ion flow, guide uniform deposition of lithium and inhibit generation of lithium dendrites. The polyolefin layer mainly provides mechanical strength, and forms a gradient aperture structure with the spunlace modified polyethylene layer, so that the uniformity of current density is improved, the uniform deposition of lithium is effectively induced, and the growth of lithium dendrites is reduced.

The utility model relates to a square alkaline electrolytic bath pole plate, which belongs to the technical field of alkaline electrolytic baths and comprises a first frame, a runner plate and a second frame, the first frame and the second frame are arranged on two sides of the runner plate, the runner plate is provided with a plurality of manifold ports, and the first frame, the second frame and the runner plate are connected into a whole; the first frame is provided with a plurality of manifold parts along the thickness direction of the polar plate; and / or the second frame is provided with a plurality of manifold parts along the thickness direction of the polar plate; the plurality of manifold parts arranged on the first frame extend along the thickness direction of the polar plate to contact with the third frame, and / or the plurality of manifold parts arranged on the third frame extend along the thickness direction of the polar plate to contact with the first frame, and the extension height of the manifold parts is greater than or equal to the height of the manifold openings. The square alkaline electrolytic cell polar plate disclosed by the utility model can reduce bypass current and improve current efficiency.