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Diaphragm pumping deviceRelated Patent Categories: Pumps, Motor Driven, Electric Or Magnetic Motor, Collapsible Wall PumpDiaphragm pumping device description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070217929, Diaphragm pumping device. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a diaphragm pumping device, and more particularly to a diaphragm pumping device for vacuuming or air pumping purposes, and having one or more silencers for reducing noises that may be generated by the pumping device. [0003] 2. Description of the Prior Art [0004] Typical air pumping devices or air compressors comprise a piston slidably received and engaged in a cylinder housing, and a motor driving device coupled to a piston rod for moving or driving the piston to move in reciprocating action within the cylinder housing, in order to generate and to supply a pressurized air to inflate various objects. [0005] For example, U.S. Pat. No. 5,215,447 to Wen discloses one of the typical mini-type air compressors comprising a motor having a driving axle connected with a driving gear, for coupling to and for moving or driving the piston to move in reciprocating action within the cylinder housing via an eccentric member. However, a great noise will be generated when the piston is moved in a great speed relative to the cylinder housing. [0006] U.S. Pat. No. 5,358,385 to Wang discloses a typical dual diaphragm pump with adjustable discharge side pressure trip switch comprising a dual piston device coupled to a motor driving device via an eccentric transmission device for generating and supplying a pressurized air to inflate various objects. However, the movement and thus pumping operation of the disk shaped suction disk is limited. [0007] U.S. Pat. No. 6,413,056 to Chou discloses another typical air compressor comprising a motor coupled to a fan device for moving or driving the fan device to pump the air and to generate and supply a pressurized air to various objects. However, similarly, a great noise will also be generated by the fan device when the fan device is operated or driven by the motor. [0008] The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional diaphragm pumping devices. SUMMARY OF THE INVENTION [0009] The primary objective of the present invention is to provide a diaphragm pumping device for being actuated or operated by electric actuating device, and for vacuuming or air pumping purposes. [0010] The other objective of the present invention is to provide a diaphragm pumping device including one or more silencers or silencing devices for reducing noises that may be generated by the pumping device. [0011] In accordance with one aspect of the invention, there is provided a diaphragm pumping device includes a housing including a partition provided therein, to separate an inner portion of the housing into a first chamber and a second chamber, the housing including at least one first port provided thereon and communicating with the first chamber thereof, and including a second port provided thereon and communicating with the second chamber thereof, for receiving a fluid, at least one bladder attached to the housing, and communicating with the first chamber and the second chamber of the housing, and an actuating device for actuating the bladder to force the fluid into or out of the second chamber of the housing via the second port, and then into or out of the first chamber of the housing, and to flow into or out through the first port of the housing. [0012] The housing includes a first check valve attached thereto and disposed between the bladder and the first chamber of the housing, and arranged to allow the fluid to flow from the bladder into the first chamber of the housing only, and to prevent the fluid from flowing backward from the first chamber of the housing into the bladder, and includes a second check valve attached thereto and disposed between the bladder and the second chamber of the housing, and arranged to allow the fluid to flow from the second chamber of the housing into the bladder only, and to prevent the fluid from flowing backward from the bladder into the second chamber of the housing. [0013] The housing includes a first cavity and a second cavity formed therein and communicating with the first and the second chambers of the housing respectively, the first and the second check valves each includes a shank extended therefrom, for engaging through the housing, and each includes a ratchet catch provided on the shank for engaging with the housing, to anchor and secure the first and the second check valves to the housing, and each includes a blade provided on the shank for engaging with the housing, and for selectively blocking the first and the second cavities of the housing respectively. [0014] The housing includes two annular depressions formed therein and communicating with the first and the second cavities of the housing respectively, to form two peripheral bulges which are located around the first and the second cavities of the housing respectively, and provided for engaging with the blades of the first and the second check valves respectively. [0015] The actuating device includes an arm attached to the bladder, and device for operating the arm to depress and to expand the bladder, in order to force the fluid to flow to or from the second port of the housing toward the first port of the housing. [0016] The operating device includes a magnetic member attached to the arm, and an electromagnetic device to actuate the magnetic member to operate the arm. The housing includes a retainer provided thereon, and the arm includes a first end pivotally coupled to the retainer of the housing, and a second end having the magnetic member attached thereto. [0017] An outer receptacle may further be provided, and a container may further be provided and disposed in the outer receptacle, to support the housing in the outer receptacle. The container includes at least one cushioning member disposed between the container and the outer receptacle, to cushion the container. [0018] The housing and the bladder may also be used or acted as a silencer for coupling to various pumping devices and for reducing or decreasing the noises that may be generated by the pumping devices. [0019] Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0020] FIG. 1 is a partial exploded view of an air compressing assembly having a diaphragm pumping device in accordance with the present invention; [0021] FIG. 2 is another partial exploded view illustrating the diaphragm pumping device; Continue reading about Diaphragm pumping device... 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