35results about How to "Adjust the pressure" patented technology

The invention discloses a sealed reaction kettle, which includes a front end kettle body and a rear end kettle body connected to the front end kettle body. One front end kettle body end far from the rear end kettle body is connected to a feed inlet through a star valve. The rear end kettle body is sleeved on the outer wall of the front end kettle body, the middle part inner wall of the rear end kettle body is provided with an annular bulge, which is circumferentially arranged along the inner wall of the rear end kettle body, the axis of the annular bulge coincides with the axis of the rear end kettle body, one annular bulge side close to the front end kettle body is provided with a seal ring, one end of the seal ring is sleeved on the outer wall of the front end kettle body, and the other end is jacked and pressed to the side wall of the annular bulge, a compression spring is disposed in the seal ring, the seal ring is jacked and pressed to the inner wall of the rear end kettle body by the compression spring. The sealed reaction kettle and the adjustment method provided by the invention can improve the problems existing in the prior art and realize adjustment of the space pressure in the reaction kettle.

The invention discloses a clinical detection device convenient for electrocardiogram, and relates to the technical field of electrocardiogram detection. Aiming at the problems that the use is influenced because the legs of a user are easily blocked by a horizontally placed paper conveying plate and the horizontally placed paper conveying plate occupies more space and is difficult to store becauseprinters of some existing clinical detection devices for electrocardiogram are positioned on the bottom side of a machine body, the invention provides the following scheme that the clinical detectiondevice comprises the machine body and the printer positioned on the front surface of the machine body, wherein the bottom side of the front surface of the printer is fixedly connected with a paper conveying straight plate. According to the clinical detection device, through a folding design between a paper conveying inclined plate and the paper conveying straight plate, the occupation of space isreduced, the paper conveying inclined plate and the paper conveying straight plate are convenient to store, meanwhile, the paper conveying inclined plate and the paper conveying straight plate which are horizontally placed are prevented from blocking the legs of the user, and through the design of a fixing block and a paper pressing sheet, placed printing paper is convenient to press, so that theprinting paper can be placed along the direction of the paper conveying inclined plate and the paper conveying straight plate.

A level flattening printing table adjusting and controlling device comprises an execution hydraulic cylinder, a pressurizing hydraulic cylinder, an electric control valve, a gas-liquid converter and a drive portion. The execution hydraulic cylinder, the pressurizing hydraulic cylinder and the electric control valve are in communication through hydraulic pipes. The pressurizing hydraulic cylinder is connected with the drive portion. The electric control valve is communicated with the gas-liquid converter. The level flattening printing table adjusting and controlling device is simple in structure and easy to operate. Compared with an existing level flattening table controlling device, the level flattening printing table adjusting and controlling device saves the operation time, improves the work efficiency and has a function of adjusting the extent of the pressure on the table position.

The invention discloses a ventilation triggering apparatus and method for an anaesthesia machine. The ventilation triggering apparatus comprises an anaesthesia machine, wherein a triggering changeoverassembly is installed inside the anaesthesia machine, and the bottom end of the triggering changeover assembly is provided with a supporting assembly. The ventilation triggering apparatus is scientific and reasonable in structure, and safe and convenient in use; by arranging the triggering changeover assembly, by virtue of the effect of a volume fixing branch pipe, a volume fixing valve and a volume fixing valve adjusting knob, convenience can be brought to a locally narcotized patient, the flow rate of the gas in the pipeline can be adjusted according to the requirement of the locally narcotized patient, so that the airflow with certain constant flow rate can be provided for the locally narcotized patient; and by virtue of the effect of an air inlet main pipe, a main valve, a main valveknob, a constant pressure branch pipe, a constant pressure valve, a constant pressure valve adjusting knob and a pressure supply pipe, the ventilation triggering apparatus can be conveniently switchedto a constant pressure mode; and the pressure of the gas in the pipeline can be adjusted according to the requirement of the locally narcotized patient, and the airflow with the given pressure can beprovided for the locally narcotized patient, so that the ventilation triggering apparatus can be triggered to change the ventilation mode according to the specific situation.

The invention discloses a fast fixation and perfusion device for a liver donor in liver transplantation, which comprises a bracket, a perfusion head and an adjustment plate. The adjustment plate is provided with installation grooves up and down, and the bracket penetrates through the installation groove and is slidably connected with it. There is a pressure regulating mechanism between the adjustment plates, and the adjustment plate is provided with a placement slot, and a filling bottle is placed in the placement slot, and a hose is installed at the lower end of the filling bottle, and the other end of the hose is fixedly connected to the There is a delivery pipe, the delivery pipe is fixedly connected with an anti-backflow mechanism, the lower end of the delivery pipe is connected to the upper end of the filling head through the connection mechanism, and the end of the filling head opposite to the delivery pipe is set as a tapered convex end. The invention not only facilitates the installation and disassembly of the conveying pipe, is simple and convenient to operate and has good sealing performance, but also can slow down the pressure on the channel to ensure the continuous perfusion of the liquid, and can also adjust the pressure of the perfusate to ensure the continuous perfusion of the perfusate .

The invention discloses a water-saving irrigation device for landscaping engineering, which belongs to the technical field of irrigation devices and includes an outer casing, an inner casing, a moving assembly, a friction assembly, a clamping assembly, and a nozzle assembly. The outer casing is equipped with Inner casing, one end of the inner casing is connected with a moving component, which can facilitate the irrigation device to reduce the friction between the water pipe and the ground during the moving process, thereby helping the staff to save energy. The invention is scientific and reasonable, safe and convenient to use. A friction assembly is installed at the joint between the outer sleeve and the inner sleeve, and the friction assembly can use friction to fix the lifting position during the lifting of the outer sleeve. One end of the outer sleeve is covered with a first telescopic tube. The outer side of the first telescopic tube is covered with the second telescopic tube, and the outer sides of the first telescopic tube and the second telescopic tube are installed with a locking component.

The invention belongs to the field of concrete curing, and in particular, discloses a curing film for water reducing agent added concrete. The curing film comprises a ground film and a solidification film; multiple storage tanks for accommodating quicklime are uniformly formed in the ground film; airbags capable of sealing openings of the storage tanks are respectively arranged in the openings of the storage tanks; the ground film is provided with a through hole for vertically penetrating through the ground film; and the solidification film covers the whole ground film. Aiming at the technical problems of weak insulation effect at night and easy generation of lower humidity or higher humidity of the surface of the water reducing agent added concrete, the invention provides the curing film for the water reducing agent added concrete.

The invention relates to the technical field of fractionation, in particular to an atmospheric and vacuum distillation device for waste mineral oil based on vacuum cutting fractionation. It includes a fractionation structure and a condensation structure installed on the side of the fractionation structure. The fractionation structure includes a fractionation tower. There are multiple outlets on the side of the fractionation tower. There is a pipeline structure on the outside of the fractionation tower. The pipeline structure includes installation pipes connected to the On the discharge port on the side of the fractionation tower, the first installation hole and the second installation hole are opened in the installation pipe. The decompression structure includes a partition, and a round hole is opened on the partition, and a plug is inserted into the round hole. The plug is a tapered structure. , There is a sliding column behind the plug, a connecting column is provided at the end of the sliding column, the sliding column is connected in the connecting column, the connecting column is connected in the first installation hole, the outer cover of the sliding column is provided with a first spring, and the first spring is located between the plug and the connecting column. Among the columns, the purpose of the present invention is to solve the problem of air bubbles in the condensation pipe due to uneven composition during the discharge of mineral oil.

The invention discloses a sealed reaction kettle, which comprises a front-end kettle body and a rear-end kettle body connected to the front-end kettle body. The end of the front-end kettle body far away from the rear-end kettle body is connected to a material inlet through a star valve; The rear-end kettle body is set on the outer wall of the front-end kettle body, and an annular protrusion is arranged on the inner wall of the middle part of the rear-end kettle body, and the annular protrusion is along the inner wall of the rear-end kettle body. Circumferentially arranged, the axis of the annular protrusion coincides with the axis of the rear end kettle body, and a sealing ring is provided on the side of the annular protrusion close to the front end kettle body, and the One end of the sealing ring is sleeved on the outer wall of the front-end kettle body, and the other end is pressed against the side wall of the annular protrusion. A compression spring is arranged in the sealing ring, and the compression spring compresses the The sealing ring presses against the inner wall of the rear kettle; the invention can improve the problems existing in the prior art, and realize the adjustment of the pressure in the inner space of the reactor.