41results about How to "Guaranteed pressure value" patented technology

The invention provides a wall-mounted oxygen inhalator. The wall-mounted oxygen inhalator comprises a cup, a float flow meter, an upper connecting piece, a connector and a filtering loop, wherein a lug boss is arranged on the lower end face of the connector; a groove is formed in the lug boss; the bottom of the groove is cone-shaped and an oxygen outlet is formed in the cone-shaped wall; a lug boss is arranged on the upper end of a lower connecting piece and external threads are formed on the lug boss; a first flange and a threaded blind hole are formed at the lower end of the lower connecting piece; internal threads matched with external threads on the lower end of the connector are formed on the upper end of an end cover, and an oxygen pipe connection is formed on the wall of the end cover; external threads are formed on the upper end of an end cap, while a second flange is formed on the lower end of the end cap; a blind hole is formed in the axial direction and an oxygen discharge channel is formed in the lower end of the blind hole. The wall-mounted oxygen inhalator is simple in structure, low in processing technic requirements, compact in structure, and easy to manufacture and assemble.

The invention discloses an integrated air valve for a massage appliance, which comprises a valve body, an air intake channel and a plurality of air delivery branches are arranged in the valve body, the air intake channel has a plurality of diversion ports, and the diversion ports and gas delivery branches are connected; the gas transmission branch is provided with a check valve and an exhaust valve; the check valve includes a check port and a disc, and the exhaust valve includes an exhaust port and a movable spool; the movable spool is set On the other side of the valve disc relative to the check port, the movable valve core moves to the position where the exhaust port is opened, and presses against the valve disc to close the check port. The invention discloses an air massage appliance adopting the integrated air valve of the invention, so that the volume of the massage chair is smaller, the air bag massage system is more stable, and the massage effect is better. The invention solves the problem in the prior art that the airbag massage units cannot be exhausted and pressure maintained independently when they share the intake channel, and the air pressure of each airbag massage unit does not affect each other during pressure maintenance.

The disclosed permeameter for silicon steel magnetic performance comprises: an upper / lower yoke with one fixed and another connected with a drive motor, some coils included excitation coil and measuring coil, an excitation power, and a pressure sensor. Compared with Epstein square coil, this invention can save sample material greatly, reduces measurement error, and can bring much economic benefit.

The invention discloses a wall outlet oxygen inhalator, and the wall outlet oxygen inhalator comprises a cup, a buoy flow gauge, an upper connecting element, a connector, a filter ring, a lower connecting element, an end cover and an end cap; the upper end of the lower connecting element is matched with the lower end of the connector; the upper end of the end cover is matched with the lower end of the connector; the outer wall of the upper end of the end cap is provided with an external screw thread, and the lower end thereof is provided with a second flange extended in a radial direction; the end cap is axially provided with a blind hole, and the lower end of the blind hole is provided with an oxygen exhaust passageway; the filter ring is sleeved on the end cap; the blind hole on the end cap is connected with the upper through hole of the lower connecting element; the connector is provided with a pressure relief passageway whose outlet is provided with a pressure relief valve; the lower end of the connector is provided with an axial slot whose bottom is provided with a pressure relief passageway inlet; the slot wall on the corresponding connector is provided with an oxygen pipe port; an elastic element is arranged in the slot and provided with an axial through hole. The wall outlet oxygen inhalator has the advantages of simple structure, being convenient to process and manufacture, the pressure relief passageway is arranged on the connector such that the inhalator has the above university and can be applied to ordinary oxygen inhale or atomization inhalation.

The invention discloses a water treatment method and a device for replenishing water at constant pressure. By using a controller, the pressure value in the constant pressure tank is divided into three intervals, that is, the pressure value in the constant pressure tank is below the first threshold, Between the first threshold and the second threshold and the normal value, after the second pressure gauge detects the pressure in the constant pressure tank, the controller judges that the pressure value detected by the second pressure gauge is below the first threshold, the second Between the first threshold and the second threshold or the normal value; use the water replenishment and constant pressure of the two delivery channels to ensure accurate replenishment of water into the constant pressure tank, and ensure the pressure value in the constant pressure tank at all times, so as to improve the user's confidence Satisfaction with the product.