9results about How to "Flow adjustment" patented technology

The utility model relates to the technical field of medical instruments, in particular to an anti-backflow bladder irrigation device. The utility model provides an anti-backflow bladder irrigation device. The anti-backflow bladder irrigation device comprises an irrigation pipeline, two infusion tubes, a mixer and a flow speed adjusting piece. The mixer is in an hourglass shape and is provided with an upper hopper body and a lower hopper body which are communicated with each other, the same ends of the two infusion tubes are respectively communicated with the upper hopper body, the other ends of the two infusion tubes are respectively used for being connected with infusion bags, and the lower hopper body is communicated with one end of the flushing pipeline; a liquid flowing channel is formed in the connecting position of the upper hopper body and the lower hopper body, and the flow speed adjusting piece is installed in the middle of the mixer. According to the anti-backflow bladder irrigation device, normal saline and sodium bicarbonate can be input at the same time, two sets of infusion apparatuses are not needed, and cost is saved.

The present invention provides a multi-medium mixing device for an ultra-high voltage converter transformer, comprising a composite venturi tube and a mixing pipe connected in sequence, wherein the composite venturi tube comprises an inner venturi tube connected to a dry powder pipe and an outer venturi tube connected to a foam pipe, the inner venturi tube is nested in the outer venturi tube, the outer venturi tube is connected to the mixing pipe, and the outlet of the inner venturi tube is located before the outer throat of the outer venturi tube. The present invention also provides a fire fighting system using the mixing device. The advantages of the present invention are that after the ultra-fine dry powder enters the inner venturi tube and passes through the inner throat, the cross-sectional area of ​​the pipe is reduced, thereby accelerating the ultra-fine dry powder, and the ultra-fine dry powder can be accelerated and mixed with the compressed air foam, and then accelerated through the outer throat, promoting uniform mixing of the two media, so that the compressed air foam can effectively wrap the ultra-fine dry powder without the phenomenon of dispersed distribution.

The utility model relates to the field of pipeline joints, in particular to a water supply and drainage flow velocity adjustable pipeline joint which comprises an integrally arranged water pipe joint, a limiting block is fixedly arranged in the water inlet end of the water pipe joint, and an adjusting frame capable of sliding in the length direction of a pipeline is arranged in the water pipe joint on the side portion of the limiting block. A flow speed adjusting mechanism is arranged between the adjusting frame and the limiting block, a blocking mechanism for limiting the adjusting frame is arranged on the water pipe connector on the side portion of the adjusting frame, and a pressure detection unit is further arranged on the water pipe connector. According to the pipeline joint capable of adjusting the water supply and drainage flow speed, the water flow speed in the water pipe joint can be adjusted, the pressure in a pipeline is kept within a certain range, the fluid conveying efficiency is improved, meanwhile, the fluid impact condition can be prevented, and the water pressure at the two ends of the water pipe joint can be monitored in real time; the water pipe flow speed can be conveniently and automatically controlled.

This application provides a water treatment filtration device, belonging to the field of filtration devices, to solve the problem of inconvenient adjustment of water flow rate. It includes a treatment tank, a square tube fixedly connected to the tank, a connecting shaft connected to the square tube via a sealed bearing, a bracket fixedly connected to the tank body, and a second spring fixedly connected inside the tank body. This application includes a baffle; when the square tube is conveying water and the flow rate needs to be adjusted, the connecting bracket can be pulled to move a limiting plate. The limiting plate can compress the first spring inside the rotating housing, and simultaneously, the locking block on the limiting plate can disengage from the slot in the square tube. The rotating housing can be rotated, driving the baffle to rotate via the connecting shaft, adjusting the baffle's tilt angle, and controlling the flow space in the square tube. Releasing the connecting bracket, under the push of the first spring, causes the limiting plate and locking block to reset, and the locking block can engage with the square tube, fixing and limiting the adjusted baffle to allow for flow rate adjustment as needed.

The utility model discloses solid-phase extraction automatic sample introduction equipment, which comprises a solid-liquid extraction device, which comprises an extraction device body, a liquid inlet connecting end and a negative pressure connecting end, the extraction device body is provided with a collection cavity, the liquid inlet connecting end is installed on the extraction device body and is communicated with the collection cavity, and the negative pressure connecting end is installed on the extraction device body and is communicated with the collection cavity; the conveying assembly comprises a first pipeline, a solid-phase extraction small column and a flow velocity adjusting device, the liquid inlet end of the solid-phase extraction small column is connected with one end of the first pipeline, the flow velocity adjusting device is used for adjusting the flow velocity of fluid in the first pipeline, and the output end of the solid-phase extraction small column is connected with the liquid inlet connecting end; and the negative pressure device is connected with the negative pressure connecting end. According to the embodiment of the invention, the flow velocity of the liquid in the first pipeline can be adjusted, so that the solid-phase extraction time of the solution to be treated can be effectively controlled, the condition that the recovery rates of different samples are obviously different due to different flow velocities is reduced, and the probability of reproducibility of experimental results can also be improved.

The utility model provides a building energy-saving rainwater collecting device which comprises a wall body, a fixing plate is arranged on one side of the wall body, a servo motor is arranged on one side of the fixing plate, a gear is arranged at the output end of the servo motor, the surface of the gear is connected with a gear eccentric shaft in a meshed mode, and the gear eccentric shaft is connected with a rainwater collecting device. A connecting block is rotationally connected to the surface of the gear eccentric shaft, a mounting rod is rotationally connected to one side of the connecting block, fixing rings are arranged on the two sides of the top of the wall body, a brush is arranged at the bottom of the mounting rod, a servo motor drives a gear to rotate, and the gear eccentric shaft is driven to rotate through rotating meshing of the gear; a gear eccentric shaft rotates to drive a connecting block on the surface to move, the connecting block moves to drive a mounting rod on one side to move, and the mounting rod moves repeatedly due to rotation of the gear eccentric shaft, so that the surface of the screen is cleaned, and the situation that the screen is blocked due to excessive accumulation of impurities is effectively avoided; therefore, the rainwater is prevented from overflowing and being wasted.

The application belongs to the technical field of building construction, and discloses a concrete vertical conveying device and a concrete vertical conveying speed adjusting method. The concrete vertical conveying device comprises a flow guide cylinder, a speed reduction assembly, a flow speed monitoring member and a control unit. The speed reduction assembly is installed in the flow guide cylinder and comprises a support member and a speed reduction member. The support member is detachably connected to the flow guide cylinder. The speed reduction member comprises a plurality of speed reduction blades which are arranged in a circumferential direction of the support member at intervals. The speed reduction blades are rotatably arranged on the support member along the extension direction of the speed reduction blades. A plurality of spiral channels are formed on the surfaces of the speed reduction blades, and the concrete flows along the spiral channels. The flow speed monitoring member is configured to monitor the flow speed of the concrete. The control unit is configured to adjust the rotation angle of the speed reduction blades according to the flow speed monitored by the flow speed monitoring member. The concrete vertical conveying device can flexibly adjust the conveying speed of the concrete in a self-adaptive manner, reduces the risk of concrete segregation, ensures the concrete pouring quality, and improves the convenience of maintenance and repair.

The invention relates to the technical field of blow molding, and particularly discloses an ultra-clean barrel blow molding mold device with a circulating water cooling function, the ultra-clean barrel blow molding mold device comprises two mold mechanisms, the two mold mechanisms are the same, and each mold mechanism comprises a mold shell, a sensing pressing block, a circulating water cooling mechanism and a blowing mechanism; the mold shell comprises a water inlet hole, a water outlet hole, a first annular groove, a heat conducting plate and a forming groove; the circulating water cooling mechanism comprises a first pipeline, a second pipeline and a third pipeline, and the circulating water cooling mechanism is arranged in the first annular groove; the blowing mechanism is arranged at the bottom of the mold shell, and the blowing mechanism is provided with two blowing holes; the sensing pressing block is connected with the inner wall of the forming groove; the defects that in the prior art, a blowing mold device is not high in cooling efficiency, or water resources are prone to being wasted, the automation degree is insufficient, and the air tightness is insufficient are overcome.

The utility model discloses a greening maintenance irrigation device which comprises a water supply pipe, the top of the water supply pipe is connected with a driving box, the driving box is provided with a driving device, the driving box is rotationally provided with a rotating pipe installation pipe, the installation pipe is provided with a plurality of adjusting pipes, a flow speed adjusting device and a spray head in an array mode, and the flow speed adjusting device comprises a fixed plate and a movable plate. Adjusting elastic pieces are arranged between the fixed plate and the movable plate, adjusting blocks are arranged on one sides of the adjusting elastic pieces, adjusting rods and adjusting plates are rotationally arranged in the adjusting pipes, and fixing blocks are arranged between the adjusting elastic pieces in the adjusting pipes. By arranging the flow speed adjusting device, the water flow speed on the adjusting pipe and the spray heads can be conveniently adjusted, water with different flow speeds can be sprayed through the spray heads with different heights, the coverage area of the water flow can be adjusted, and then the irrigation area of the water flow can be conveniently adjusted according to needs.