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Diaphragm pump

A diaphragm pump and diaphragm technology, applied in the direction of pumps, pump components, variable capacity pump components, etc., can solve the problems of increased outlet pressure fluctuations, pressure pulsations, etc., to simplify the user's operation, avoid cavitation, and improve oil measurement Effect

Inactive Publication Date: 2009-09-09
WANNER EGINEERING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasingly severe pressure pulsations due to air pressure converting the diaphragm stroke from a pure sine wave form to a square wave form
A direct consequence of this is increased pump outlet pressure fluctuations, which is an undesirable characteristic for diaphragm pumps

Method used

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Examples

Experimental program
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Embodiment Construction

[0042] The present invention is an improvement to the conventional diaphragm pump mentioned above. Like parts are identified by like reference numerals. Improved components are identified and described. It will be appreciated that improved components can result in a synergistic increase in pump performance and durability.

[0043] see Figure 5 , the present invention is implemented in the form of a pump 110 . Housing 112 includes portions 38 , 114 that are similar to portions 38 , 40 of housing 24 . Portion 114 includes vents in the form of grooves 116 formed on an upper portion 118 of the surface of a cylinder 120 similar to cylinder 47 . Groove 116 provides fluid communication between transmission chamber 44 and an oil sump (not shown). While slot 116 is shown extending across from piston 46 in cylinder 120 when piston 46 is at the far right achievable, i.e. base plate 88 contacts wall 122 of housing portion 38, in the preferred embodiment there is only Slot for half ...

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PUM

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Abstract

Diaphragm pump (110) for receiving drive power from a motor, said pump comprising: a housing (112, 137) having a pumping chamber (106) adapted to contain fluid to be pumped, a transfer chamber (44) adapted to contain hydraulic fluid, and a hydraulic fluid reservoir; a diaphragm (34) having a transfer chamber side and a pumping chamber side, said diaphragm (34) being disposed between said pumping chamber (106) and said transfer chamber (44) and adapted for reciprocation toward and away from said pumping chamber (106); a piston (46) in a cylinder (120) in said housing (112, 137) adapted for reciprocation between a power stroke and a suction stroke, said cylinder (120) forming a portion of said transfer chamber (44), said piston (46) moving longitudinally in said cylinder (120) with said cylinder (120) having a surface with an upper portion (118) when said pump (110) is oriented so that said cylinder (120) is generally horizontal; a fluid communication path for the hydraulic fluid between said hydraulic fluid reservoir and said transfer chamber (44) and a valve in said path for selectively allowing flow of hydraulic fluid from said hydraulic fluid reservoir to said transfer chamber (44) when said valve is open.

Description

technical field [0001] This invention relates generally to an improved diaphragm pump, and more particularly to a diaphragm pump for use when the liquid side of the diaphragm is primed and the suction side of the diaphragm is at a relatively high vacuum, and the diaphragm Another case where the liquid side is not primed. Background technique [0002] The known rotary duty, oil supported / driven diaphragm pump is a high pressure pump capable of pumping many different liquids because in process fluids it has no sliding pistons or seals to damage. The diaphragm completely isolates the pump from the surrounding environment (process fluid), thereby protecting the pump from impurities. [0003] figure 1 A diaphragm pump 20 is shown in its entirety in FIG. The pump 20 has a drive shaft 22 rigidly secured in a pump housing 24 by a large tapered roller bearing 26 at the rear of the shaft and a small bearing (not shown) at the front of the shaft. Sandwiched between another pair of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M19/00F04B43/067G01M99/00
CPCF04B43/073F04B53/06F04B43/067
Inventor K·E·莱哈克R·D·亨布里
Owner WANNER EGINEERING INC