16results about How to "Uniform flow" patented technology

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 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 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 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 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.

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.

This utility model discloses an automatic medicine retrieval and placement system for a traditional Chinese medicine pharmacy, including a clamping module and a conveying module. The clamping module positions and clamps medicine boxes from designated compartments in a medicine cabinet and places them on the conveying module. The conveying module includes a loading / unloading conveyor line, an outbound conveyor line, and an inbound conveyor line. The loading / unloading conveyor line is located on one side of the medicine cabinet and is used to receive medicine boxes removed from the medicine cabinet by the clamping module and send them to the outbound conveyor line, as well as to transport medicine boxes from the inbound conveyor line to the clamping module. The outbound and inbound conveyor lines are located at opposite ends of the loading / unloading conveyor line, forming a circular conveyor line. This creates a bidirectional loop path for the outbound and inbound processes of the medicine boxes, avoiding wasted path space caused by empty returns. The parallel layout of the outbound and inbound conveyor lines allows replenishment and medicine retrieval operations to be performed simultaneously, significantly improving the pharmacy's medicine dispensing efficiency.

This disclosure proposes an anti-eccentric load hydrostatic system for precision machine tools, comprising: an oil supply system and multiple oil supply branches; wherein, each oil supply branch includes: a capillary flow tube and a flow compensation unit; the flow compensation unit is disposed between the oil inlet end of the capillary flow tube and the oil outlet end of the oil supply system; each oil pressure acquisition unit is sequentially connected and used to output the maximum oil pressure in each hydrostatic oil chamber; the flow compensation unit corresponding to the maximum oil pressure is used to maintain the hydraulic resistance of the passage between the corresponding capillary flow tube inlet end and the oil supply system outlet end, and the remaining flow compensation units are used to adjust the hydraulic resistance of the passage between the corresponding capillary flow tube inlet end and the oil supply system outlet end according to the maximum oil pressure, so as to balance the oil flow in each hydrostatic oil chamber. In the anti-eccentric load hydrostatic system for precision machine tools of this disclosure, the flow balance of each hydrostatic oil chamber under eccentric load conditions is ensured, thereby ensuring the stable and accurate operation of the machine tool.

The utility model relates to refrigeration equipment technical field especially relates to a kind of high-efficiency shell and tube heat exchanger and refrigerant distribution structure, comprising: heat exchange tube bundle in shell body;Pipe plate that closed shell body end portion;Pipe box is connected to pipe plate, and pipe box is equipped with refrigerant liquid interface;One distribution plate and secondary distribution plate are arranged in pipe box;Primary distribution plate is fixed in the inner end portion of refrigerant liquid interface;Secondary distribution plate covers the tube mouth of heat exchange tube bundle.The scheme has the advantages of improving refrigerant distribution uniformity, avoiding phase separation phenomenon, improving heat exchange efficiency and solving compressor oil return problem.