35results about How to "Pressure regulation" patented technology

The invention provides an experimental device and method for simulating in-situ fluidized mining of deep-earth metal mines, belonging to the technical field of deep-earth resource fluidized mining. The device includes a liquid return port, a liquid storage tank, a liquid outlet, a pumping motor, a liquid flow meter, an electronically controlled airtight valve, a sealing ring, a safety valve, a pressure gauge, a pressure relief valve, a reaction tank top cover, an electric heating control Temperature layer, fixing bolts, sealing gaskets, reaction tank, liquid injection pipeline, liquid injection hole, porous partition, liquid sink surface, liquid sink, pH sensor, redox potential sensor, ion concentration sensor, liquid collection tank, Visual terminal for data collection control, temperature sensor, oxygen concentration sensor, air pressure sensor, electronically controlled temperature changer, gas flow meter, O 2 Storage tank, CO 2 tank. The invention realizes visually adjustable temperature and air pressure of the experimental device, and measurable and controllable parameters such as pH value, oxidation-reduction potential, ion concentration, etc., and provides research device and method reference for in-situ fluidized mining of deep metal mines.

The invention provides a transplanter which is used for matching with the power machinery of a hand tractor, etc., and applicable for hole seeding of corn and soybean. The transplanter of the invention comprises a guide wheel, a pull bar, walking wheels, a seed manure box and a duck-billed transplanter. The transplanter is characterized in that: the seed manure box is fixedly connected on a seed manure bracket, a seed control plate is arranged between the bottom part of the seed manure box and the upper plate of the seed manure bracket, the seed mating limited port of the seed control plate is matched with a seed mating cam which is fixedly connected on a seeding displacement rack, the fixed mouth of the duck-billed transplanter is fixedly connected on the seeding displacement rack, the duck-billed transplanter is matched with the seeding limited port of the lower plate of the seed manure bracket, the driving chain wheel on a driving shaft is connected with the driven chain wheel of a driven shaft, a cam group which is fixedly connected with the driven shaft is contacted with a bending arm which is fixedly connected on a joint shaft, the bending arm is coaxially and fixedly connected with a swing arm which is articulated on the seeding displacement rack. The transplanter of the invention has the advantages of reasonable structure, adjustable seeding depth, plant spacing and spacing between ridges, reliable action, long service life, high working efficiency, good seeding quality, etc.

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 water pressure testing device for a high-pressure-resisting oil-gas pipeline. The device comprises a testing base, a piston plate, a water storing tank, a water pressure testing barrel, a piston rod, a slipping-preventing propping device and a high-pressure-resistant oil-gas pipeline, wherein a pipe fixing clamp is welded to the upper end of the testing base; the high-pressure-resistant oil-gas pipeline is clamped through the pipe fixing clamp; flange plates are arranged at two ends of the high-pressure-resistant oil-gas pipeline and are connected to end sealing plates through bolts; the water pressure testing barrel is welded to the outer side of the end sealing plate which is connected to one end of the high-pressure-resistant oil-gas pipeline. The device is convenient to assemble and disassemble, and high in stability; water is pumped into the water pressure testing barrel to pressurize to drive the piston plate to forwards slide so as to compress air in acompressing chamber, and thus the pressure resistance of the high-pressure-resistant oil-gas pipeline can be detected; the operation is convenient and quick; the detection and test are easy to operate; the device is applicable to the performance testing of the high-pressure-resistant oil-gas pipeline.

The present invention discloses an indirect printing press having a movable interposed roller assembly that enables the pressure in the transfer nip to be adjusted more precisely. The roll assembly includes: a thin-walled roll having a first end and a second end; a first pivotable collar supporting the first end of the roll and configured to apply a first moment to the roll. the first end of the roller; a second pivotable collar supporting the second end of the roller and configured to apply a second moment to the second end of the roller; and causing actuator. The actuator is operably connected to the first collar and the second collar and is configured to pivot the first collar and the second collar to apply the first moment and the second moment to the first end and the second end of the roller.