34results about How to "Realize the function of holding pressure" patented technology

The invention provides an array-type internal support fixture and a flexible clamping method for large-scale spherical crown thin-walled parts, and belongs to the technical field of clamping. The array-type inner support fixture is composed of a hydraulic drive system, a positioning clamping device and an auxiliary device. The hydraulic drive system is used to drive the hydraulic cylinder to move, and then drive the movement of the rubber plate to realize the inner support clamping. The invention adopts the method of combining the inner tire membrane with the automatic support, the structure is simple, the automatic inner supports are arranged in an array, and each group of automatic inner supports is a separate action, which can adapt to the inner surface of a relatively complex workpiece and achieve close fit with it; at the same time, it adopts The pressure plate and the pressure ring assist in clamping the upper and lower unprocessed areas of the workpiece, which can ensure the overall rigidity of the workpiece; the clamping and loosening of the clamp is controlled by the connecting valve, which is convenient to operate, realizes the function of maintaining pressure and saves costs; the invention realizes Flexible, fast and reliable clamping of spherical crown thin-walled parts.

An internal meshing cycloidal gear type hydraulic transformer comprises a casing (1), an eccentric sleeve (2) internally arranged on the casing (1), an internal meshing cycloidal rotor pair (3) sleeved with the eccentric sleeve (2) as well as an upper end cover (4) and a lower end cover (5) which are connected on two sides of the casing (1) through bolts (6) respectively. The hydraulic transformerhas the beneficial effects as follows: the hydraulic transformer has the remarkable advantages of small size, low weight, simple structure, easiness in manufacturing, high compression frequency, small flow pulsation, stable running and multiple functions, and for the cycloidal gear type hydraulic transformer with the position of a flow distributing barrier between an unloading oil opening and a pressurizing oil opening fixed, different pressurization or depressurization ratios can be realized through exchange of the unloading oil opening and the pressurizing oil opening.

The invention provides a control valve and an electric pressure pot provided with the valve. The control valve comprises a base and a valve deck. The base and the valve deck form a valve cavity. The base is provided with a valve element hole and an exhaust hole which are communicated with the valve cavity. A valve element is arranged in the valve cavity. One end of the valve element extends out of the valve element hole of the base. A valve element gasket used for sealing the exhaust hole is arranged on the portion, close to the valve element hole, of the valve element. The valve deck is provided with a through hole communicated with the valve cavity and a limiting rib used for blocking movements of the valve element. The valve deck is provided with two stations. When the valve deck is located at the first station, the valve element is blocked by the limiting rib, and the valve element gasket is far away from the exhaust hole; when the valve deck is located at the second station, the limiting rib is far away from the valve element, and the valve element gasket plugs the exhaust hole. Or, when the valve deck is located at the first station, the valve element is blocked by the limiting rib and the valve element gasket plugs the exhaust hole; when the valve deck is located at the second station, the limiting rib is far away from the valve element. By means of cooperation of the valve element, the valve element gasket, the exhaust hole and the valve deck, the control valve can achieve the sealing and ventilation functions.

The invention relates to a blast furnace blower lubricating oil emergency supplementing and pressure maintaining system, and belongs to the field of electromechanical integration. The system comprisesan emergency oil storage device and an on-off device, wherein the emergency oil storage device comprises an oil storage tank and an oil supplementing tank capable of supplementing the oil storage tank with oil; a liquid level meter is arranged on the oil storage tank; the oil storage tank communicates with an external compressed air source; set air pressure is kept inside the oil storage tank; and the pressure value of the set air pressure is greater than that of the lowest oil pressure in a lubricating oil pipeline. The equipment is pneumatically propelled and rapid in response, so that therapid supplementing and pressure maintaining requirements can be completely met; when a mother tube is supplemented with lubricating oil, the explosive force can be greater and the pressure maintaining function can be achieved; and by the utilization of the combined linkage action of a liquid level switch and the on-off device, the oil output from the oil storage tank can be automatically cut offand the air-in-oil accident caused by the entry of low-liquid-level air into the oil pipeline can be prevented.

The invention provides an antiriot vehicle-stopping device. The antiriot vehicle-stopping device comprises a supporting unit capable of being installed below the ground, a bearing unit capable of rotating around one end of the supporting unit and an anti-collision unit vertically arranged at the bottom of the other end of the bearing unit and used for preventing vehicle collision. The top end of the anti-collision unit is connected with the end of the bearing unit, a driving unit is arranged at the bottom of the bearing unit and can drive the bearing unit to rotate around one end of the supporting unit, and the rotating bearing unit drives the anti-collision unit to ascend vertically. The antiriot vehicle-stopping device is easy to operate, practical and capable of being rapidly started within short time and effectively stopping invasion vehicles.

The invention relates to a micro-peristaltic pump for an artificial anal sphincter system in the technical filed of medical appliances, which comprises a first container, a connecting pipe, a rotating shaft, a motor, a speed reducer, rollers, a second container and a sleeve, wherein the first container is connected with the connecting pipe, and the connecting pipe is connected with the second container by penetrating through the sleeve; the two rollers are symmetrically arranged at the two sides of the motor, and divide the connecting pipe into two parts which are not communicated with each other, and the rollers are connected with the rotating shaft; and the rotating shaft is connected with the motor in a meshed way. The invention realizes the two-way drainage between a clamp sac and a liquid storage sac, and can realize the pressure holding function in any position.