摘要:
An alternating pressure valve system is provided comprising a blower with an air intake and an air outlet; a rotor valve assembly connected to the air outlet from the blower where the rotor valve assembly comprising: a housing with an air intake, a first air outlet, a second air outlet, and a circular chamber; and a wedged shaped rotor valve rotatably contained within the circular chamber of the housing such that the rotor valve can rotate to partially block the first air outlet, partially block the second air outlet, or block neither air outlets; The rotor valve is preferably controlled by a gearmotor and pressure sensors to detect the relative pressure in each outlet.
摘要:
A multi-function, random access, dual, three-way valve for use with fluid switching and the like is provided, whereby a first fluid flow to the valve is selectively placed in fluid communication with a first or a second outlet passage from the valve for selectively transferring the first fluid flow and a second fluid flow to the valve is, independent of the flow path of the first fluid, selectively placed in fluid communication with a third or a fourth outlet from the valve for simultaneously transferring the second fluid flow. A rotor element rotatably movable relative to a stationary stator element to at least four discrete angular positions actuates to multi-function switching capabilities of the valve when the rotor element is selectively placed in one of the at least four discrete positions. The valve directs the first fluid flow to one of two alternate outlet passages and, simultaneously and independently, directs the second fluid flow to one of at least two different outlet passages.
摘要:
A multi-port valve useful in chromatography or other analytical chemistry processes utilizes a ferrule and clamp assembly to connect a number of tubes or capillaries to a common port in the valve. The use of the clamping assembly, as opposed to conventional connectors such as nuts and/or bolts, permits the capillary ends to be positioned in extremely close proximity to the valve rotor and to each other, thus minimizing the volume between two capillaries when they are in brought into fluid communication with each other. At the same time, the clamps allow for easier connection and disconnection of the tubes or capillaries from the valve body. An operator can twist a screw to tighten the clamp and create a sealed connection without the need for special tools.
摘要:
In order to realize higher compatibility of high-performability and energy saving of a refrigerator-freezer, a valve housing having one inlet port normally communicating with a valve chamber and first and second outlet ports B, C opening on a bottom face of the valve chamber, a valve body 17 rotatably provided in the valve chamber and having a partition wall portion 20, on its end face facing a bottom face of the valve chamber, to partition the end face into an opening area 18 communicated with the valve chamber and a non-opening area 19 not communicating with the valve chamber, and an electric actuator to steppingly turn the valve body 17 are provided for an electrically operated selector valve used in a refrigerating cycle unit for the refrigerator-freezer, and the position of the valve body 17 is changed by four positions A-D.
摘要:
The present invention relates to a rotary valve assembly for a pressure swing adsorption system. The rotary valve assembly includes a first valve member and a second valve member relatively rotatable about a common center of rotation to provide valving action for selectively transferring fluids therethrough. The second valve member has a first fluid section with at least one aperture adapted for transferring a first fluid of a first pressure and composition therethrough and a second fluid section with at least one aperture adapted for transferring a second fluid of a second pressure and composition therethrough. The first valve member has a first fluid section with at least one passage for transferring the first fluid in the valve assembly and a second fluid section with at least one passage for transferring the second fluid in the valve assembly. A vent is located between the first fluid sections and the second fluid sections of the valve assembly and is vented to a pressure lower than the pressures of the first and second fluids so as to vent leakage from either of the sections of the valve assembly. The rotary valve assembly further includes means for effecting relative rotation of the first valve member and second valve member.
摘要:
A discharge valve is disclosed for use in a vacuum toilet system having a waste receptacle defining an outlet and a sewer line placeable under partial vacuum. The discharge valve comprises a housing defining an inlet and an outlet, and a rotatable discharge valve member disposed in the housing for selectively establishing fluid communication between the inlet and the outlet. A periphery of the disk valve member being formed with a series of gear teeth. An actuator is provided having a rotatable spur gear adapted to engage the periphery of the discharge valve member.
摘要:
A rotary valve unit in a pulse tube refrigerator is quiet, and has high durability and improved refrigeration efficiency by restricting the generation of unidirectional flow. A center hole is formed on a sliding plane side as a recessed space in the sliding surfaces between the sliding plane and another sliding plane. Since the second center hole is in communication with a low pressure input port via a communication passage, the leakage between the sliding surfaces of the sliding planes can be introduced to the low pressure input port with low pressure.
摘要:
A valve for use with an inflatable cushion having individual inflation zones including a casing with an internal bore and a plurality of openings along the length of the casing connected to the individual inflation zones by air conduits and a movable slide within the casing bore. The slide has a number of openings along the its length that communicate with an inner bore. The valve is opened by aligning the slide openings with the casing openings to allow the inflation zones to communicate through the valve slide bore and is closed by moving the slide openings out of alignment with the casing openings to seal off the inflation zones.
摘要:
Sludge collection and removal systems are disclosed. The present invention provides methods and apparatus that include piping system of headers and laterals selectively provided with flow from a central point so that sludge can be removed from areas where it accumulates most rapidly. The adaptable nature of the piping system additionally permits the number of collection laterals and orifices to be varied to suit the sludge accumulation characteristics of the sludge basin. Additionally, improved multiple port valves are disclosed that permit the selective connection of the flow among sections in preferred embodiments of the sludge collection systems.
摘要:
A distribution valve includes a fluid inlet port and a plurality of fluid outlet ports, wherein the distribution valve includes a housing including a fluid inlet (3). The housing includes an upper section (15B) and a lower section (15B). A gear reduction assembly (2) located in the housing includes a gear reduction mechanism (2A) and impeller (2B) located near the inlet port and connected to a rotary input shaft of the gear reduction mechanism (2A). A cam device (6) engages a rotary output shaft of the gear reduction mechanism so as to rotate the cam device in response to rotation of the impeller. The cam device (6) includes a raised section (6A) having their own a raised camming surface (6B) which rotates in response to rotation of an impeller of the impeller (2B). A plurality of valve assemblies disposed in the lower section (15A) are arranged to open or close fluid paths through the plurality of fluid outlet ports (4), respectively, in response to rotation of the camming surface (6B). Each valve assembly includes a valve seat in the corresponding fluid outlet port, and a hinged valve plate (9) in the lower section (15A) connected to contact the valve seat so as to close the outlet port and to move away from the valve plate to open the outlet port. Each valve assembly also includes a lift pin (10) connected to the valve plate (9) for engaging the camming surface (6B) to open and close the outlet port as the cam device (6) rotates. The cam device (6) rotates in response to the impeller assembly and gear reduction assembly to sequentially open and then close the valve assemblies. In the described embodiment, the cam device (6) operates to begin opening the next sequential valve assembly before completely closing the present valve assembly.