4results about How to "Resistance adjustment" patented technology

The utility model relates to the technical field of check valves, in particular to a buffer type check valve which comprises a check valve structure. The check valve structure comprises a valve body piece, the side face of the valve body piece is connected with a water outlet pipe piece in a penetrating mode, and a water pressure buffering structure is installed at the end, away from the water outlet pipe piece, of the check valve structure. According to the circulating buffering device, a high-pressure water source firstly flows into the circulating buffering drum through the water inlet pipe to apply pressure to a water pressure buffering plate in the circulating buffering drum, so that the water pressure buffering plate is impacted by the water source to drive a buffering rotating rod to rotate in the circulating buffering drum, and the buffering rotating rod drives a flywheel to rotate in a magnetic field of an electromagnet; through the electromagnet and the flywheel based on mutual action between a magnetic field and a conductor, when the flywheel rotates, the conductor in the flywheel cuts the magnetic field, induced current is generated in the conductor according to the Faraday's law of electromagnetic induction, the induced current and the magnetic field interact to generate braking torque, and therefore resistance adjustment is achieved.

This utility model discloses a plastic film winding device, applied in the field of plastic film production. It includes a base plate, a support plate bolted to the top of the base plate, and a fixing plate bolted to the surface of a fixing plate. A tension roller is rotatably sleeved between the inner walls of the fixing plates. This utility model achieves good winding quality and ease of use by using friction between a friction block and a friction disc to generate resistance in the tension roller and tighten the plastic film for winding. The rotating head changes the friction between the friction block and the friction disc, adjusting the winding resistance and improving practicality and applicability. Furthermore, the device facilitates replacement by moving a sliding cylinder to disengage it from the fixing groove, and a locking connector, under the action of a third spring, engages with the locking hole to fix the sliding cylinder. The winding roller is then removed from the fixing groove for replacement, reducing workload and improving replacement efficiency.

The utility model relates to the technical field of fitness equipment, and provides a water-magnetic double-resistance rowing machine which comprises a rack, a guide rail, a sliding base, a foot supporting face, a water tank, a connecting shaft, a magnetic assembly and a winding assembly, the guide rail is arranged on the rack, the sliding base is connected to the guide rail in a sliding mode, and the foot supporting face is arranged on the rack and used for allowing feet to abut against; the water tank is arranged on the rack, and rotating paddles are arranged in the water tank; the connecting shaft is rotatably connected to the rack and is coaxially connected with the rotating paddle; the magnetic assembly comprises an aluminum disc, magnets and a mounting frame, the aluminum disc is arranged on the connecting shaft, the mounting frame is arranged on the rack, the magnets are arranged on the mounting frame, the magnets are arranged on the two sides of the aluminum disc, and the aluminum disc is used for cutting magnetic induction lines; the winding assembly comprises a handle, a winding disc and a pullback device. The rowing machine has the effect of enriching the resistance providing modes of the rowing machine.

The invention relates to the technical field of medical treatment, and discloses a respiratory training device capable of monitoring tidal volume for a tracheal intubation patient, the respiratory training device comprises a connecting tube, the bottom of the connecting tube is fixedly connected with a tube body, the bottom of the tube body is fixedly connected with a tap, and the two sides of the tap are fixedly connected with a connector tube and a training tube respectively; branch pipes are fixedly connected to the front portion and the rear portion of the right end of the training pipe respectively, when gas passes through the branch pipes, a gas flow sensor in a humidity detector can sense the gas, a specific numerical value is displayed on a display screen on the front side of the humidity detector through processing of a DSP controller, and on the basis of the humidity value, the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring of the real-time monitoring is achieved. When a patient subsequently uses the breathing machine communicated with the connector tube to assist in breathing, medical staff can be helped to set the air inlet amount and the air suction amount of the breathing machine, and meanwhile the medical staff can be helped to judge whether breathing of the patient reaches a normal value or not according to the tidal value so as to judge whether extubation of a lung intubation can be carried out or not.