SA08290607B1 - Diaphragm Pump Position Control with Offset Valve Axis - Google Patents

Abstract

Abstract: A hydraulically driven pump includes a diaphragm, a piston, a transfer chamber, a fluid reservoir, and a valve spool. The transmission chamber is between the diaphragm and the piston and is filled with hydraulic fluid. A fluid reservoir is in fluid contact with the transport chamber by at least one valve. It forms a valve spool to control the flow of fluid between the transport chamber and a fluid reservoir. A valve spool is movable to open and close the orifice in at least one valve only in an overflow condition or a condition below packing level in the transport chamber. The valve spool is a valve spool capable of movement along the axis that was not coaxially aligned with the axis of movement of the diaphragm. Figure 1

Description

Diaphragm pump position control with offset valve axis Full description Background of the invention:- The present invention relates in general to fluid pumps and in particular to hydraulically driven diaphragm pumps. Hydraulically driven diaphragm pumps can be divided into at least two groups. © The first group includes pumps that use a different stroke for a hydraulic piston or a plunger other than the diaphragm plunger. These pumps can be referred to as asynchronous pumps. These asynchronous pumps, Le Asynchronous pumps, are used for measurement in large diaphragm Cus pumps, which are preferred because they contain a diaphragm with a large diameter that deviates only by a small amount of 0 (a short stroke). The short-stroke diaphragms are driven by a long-stroke hydraulic piston, and the long-stroke piston makes it possible to use a small diameter of the piston, which results in the loads at least on the crankshaft and crankcase crankcase that must move the piston through its stroke or stroke (stroke) Vo and the second group includes pumps in which the diaphragm center moves the same distance as the hydraulic piston moves and these pumps can be referred to as pumps The position of the diaphragm in synchronous pumps is controlled by a valve in the piston that maintains a constant distance between the piston and the center of the diaphragm - diaphragm Ye and shows an example of a valve system to control the position of the diaphragm in the pumps synchronous pumps in US Patent No. 094 ¥,AAL, (in the name of (Wanner) entered here by reference. Wanner shows a system that senses the position of the membrane relative to Yaey

a

for piston; Then it works to keep the position of the membrane constant. The Asia Wanner system is suitable for pumps that must operate at high speed or those that pump abrasive materials because the system allows the use of elastic diaphragms that do not need to be connected to a stopping surface at the end of the trip. Accordingly, (Ja) if the piston travels more than the distance of the diaphragm ©, then this system does not become capable of adequately maintaining the amount of fluid

hydraulic behind the diaphragm of the pump until it works properly. Some examples of asynchronous pumps are described in US Patent No. 5,157,781 (as Hom), US Patent No. 5,119,718 (as Augustyn o) and US Patent No. 4,887,417 (as Malizard). Examples of these pumps are: All pumps use a similar attempt to control the position of the diaphragm.Each of these pumps momentarily adjusts the amount of oil at the top or bottom of each stroke.It determines the state of flush when the diaphragm travels too far forward and reaches the travel limit. This causes the hydraulic fluid pressure to be higher than normal, this causes the valve to open and release some excess fluid instantaneously.This increase in pressure is generated when the Vo of the diaphragm comes to a standstill or simply to the final point of deflection where higher pressure is required to move the diaphragm as well. Indicating that this pressure is not transferred to the pumped fluid and thus results in an unbalanced pressure drop across the membrane.This method of different pressure treatment by flushing requires that the membrane includes materials and form suitable for the use of this unbalanced pressure without collapse of the membrane.This limitation is caused by the membrane materials and design In 0 use each large diameter; Low deflection diaphragms that increase pump size and cost

to a great extent. It should be noted that the well-known hydraulically driven asynchronous pumps do not allow the use of highly elastic diaphragms which are relatively small and capable of large deflections for at least the previously described reasons. The result (ella) of Yo determines the use of these types of membranes with synchronous pumps. The piston's journey must be in to

It has a relatively short synchronous pump since it is limited by the membrane path. This allows the crankshaft and crankcase to withstand the higher loads of the large diameter piston making the pump drive aspect more expensive. An AT example of a hydraulically driven pump is shown in US Patent No. 14.81/4L, ? (Lofquist aly) © - Lofquist shows the spool or spool that moves with each diaphragm trip to open ports simultaneously (in of 1) between a fluid reservoir and a hydraulic chamber (CS) behind the diaphragm At the ends of the piston stroke. The ports and movable spool allow only a small pulse of fluid to pass through each stroke to adjust overflow or fill under level. Vo Lofquist's invention has some significant drawbacks under (without) cases of overflow and substandard filling (such as in cases caused by the pump inlet pressure being too low or too high for the fluid being pumped). and under extreme rashes; The small pulsation of the fluid allowed with each stroke is not sufficient to modify the swell on the sill as it causes stress on the diaphragm until it swells sufficiently to adjust the swell state. There is another Ve defect in Lofquist's invention related to the direction to which the diaphragm is directed and under (Jie) dally conditions the low inlet and outlet pressures of the resulting pumped fluid; Sie for a blocked inlet to the pump); The Lofquist system tends to add oil to the Jil chamber without any routing applied to the diaphragm which on the other hand discharges the oil rash. As a result; The rash cannot resolve and so the membrane collapses. Ye improvements in diaphragm position control of diaphragm pumps are needed. General description of the invention: One of the images of the present description relates to a diaphragm pump, a DIAPHRAGM PUMP comprising a piston, a diaphragm, pumping chambers and Js ctransfer chambers, first and second valves; A first spool 0 and a valve spool 0 (a spool with a valve) and prepare the piston for reciprocating movement between a first position and a second position. and be

- Diaphragm SUE for movement between the first and second positions that are integrated with the first and second piston positions. The transfer chamber is located on one side of the diaphragm and is defined in part by the relative positions of the diaphragm and piston. The transmission chamber is filled with hydraulic fluid. The infusion chamber is placed on the opposite side of the diaphragm of the transport chamber. The fluid reservoir is in fluid contact with the transport chamber through the first and second valves. The valve spool shall be placed in the carriage chamber and arranged to cover the inlets of the first and second valves when the valve spool is in first position; to cover the opening of the first valve and open the opening of the second valve when the valve spool is in a second position; To open the opening of the first valve and close the opening of the second valve when the spool is in a third position. Preferably, 0 spool maintains the first position until Alla generates overflow in the transfer chamber which moves the spool to the second position; or until an under-level filling condition is generated in the conveying chamber which moves the spool (roller) to a third position. The pump also includes an operating member that is attached to a moving part of the diaphragm that is attached to the spool (pulley) to move the spool (pulley) between the first, second and third positions. The operating member allows a spool to be positioned on a different axis than the shank and spring which is used to set up directed pressure on the diaphragm. The spool (reel) can be positioned on a separate axle from the diaphragm; diaphragm stem and spring; and the primary position of the pump. Methods relating to the operation of this diaphragm pump to control the fluid pressures in the pump are also important aspects of the present description. The previous summary does not intend to describe every embodiment shown or every application of the innovative aspects shown here. There are figures in the detailed description that follow the characteristics of the description in particular that serve as examples of how certain innovative aspects can be applied. While illustrating and describing certain embodiments; He may understand that the description was not specific to those embodiments. Yqsy

A Brief Explanation of the Drawings:- Fig. iy 1 View of a cross-section of an example pump according to the principles of the present description with the pump piston in the bottom dead point (BDC) position with Ala normal packing. ° shape? A cross-sectional view of an example pump shown in Figure 1 with the pump piston in top dead center (TDC) position with normal filling condition. Figure A is a close-up view of the valve positions shown in Figure X. Figure ? Jie is a cross-section view of an example pump shown in Figure 1 with the pump piston in a bottom dead point (BDC) position with Dla Filling below 0 or below level Fig. A Jie Close-up view of the valves shown in Fig. 3. Fig. ; represents a cross-section view of a pump for example Aine in Figure 1 with the pump piston in Top dead center (TDC) position with packed state Figure A is a close-up view of the valves shown in Figure 4. Vo Figure 0 is a cross-section of an example of an alternate lever-type actuator arm shown in sublevel packed condition BDC Fig. fo has a close-up view of the valves shown in Fig. 0 Fig. 1 represents a view of the valve shown in Fig. © in normal packing TDC Fig. 11 Jie close-up view of the valves shown in Fig. 6 0. Detailed Description: Different embodiments will be described in detail by reference to the drawings, in which similar reference numbers represent parts and assemblies that are similar across multiple views. References to different embodiments are not limited to the scope of the claims appended here. In addition; The examples provided in this Description are not intended to limit or limit some of Yo's many possible embodiments of the appended claims.

Va The following description is intended to prepare the general brief description of a suitable environment in which the invention can be applied. Although it is not required; The invention will be described in the general context of diaphragm pumps. the composition is described; Production and the use of some devices and systems to remotely control the position of the membrane, for example; and methods of use

° The present description generally relates to Jie fluid pumps, hydraulically driven diaphragm pumps. The principles of the present description are equally applicable to asynchronous daly pumpsazielilly - in asynchronous pumps there is a different stroke of the hydraulic piston with that of the diaphragm. The diaphragm is typically relatively large in diameter and forms

0 to deviate by a relatively small amount. This stroke or short stroke of the membrane is managed by means of a cylinder or a large hydraulic piston stroke or stroke. And with the length of the stroke or the journey of the drum or the hydraulic piston; a small diameter of the piston is required; Which imparts small charges to the crankshaft and crankcase of the pump.

Synchronous pumps are formed so that the center of the membrane moves

Vo is the same distance that the hydraulic piston moves. And in those pumps; The diaphragm must deviate large distances corresponding to the piston stroke to ration the charges on

Ade The crankshaft and crankshaft resulting from the use of a relatively small diameter piston. If it is not possible to deflect the membrane to the extent necessary to ensure the relatively small diameter of the piston, it must be lengthened

piston diameter” and thus create large charges on the crankshaft and crankcase. And can

0 Using the current description, La, with asynchronous or synchronous pumps to help control the position of the membrane to ensure that the membrane does not expand or contract beyond the specified distances (Tine), which on the other hand may lead to the collapse of the membrane.

Many known membrane position control systems are used based on conditions

Hydraulic pressure in the transmission chamber on one side of the diaphragm opposite the fluid being pumped. And it works

Yo those pressure based systems use a relief or relief valve (to prevent build up of Yasy

- - pressure) opens or closes in response to the given pressure levels. Drainage baths are typically located between the hydraulic chamber and the hydraulic fluid reservoir. in systems designed to vent excess pressure; The relief valve instantly opens to release some hydraulic fluid into the reservoir when the maximum pressure is exceeded. and in systems designed to vent under pressure; A separate drain bath Til opens to draw some hydraulic fluid from the reservoir in the hydraulic chamber when the pressure drops below the minimum pressure. Excess pressure is typically generated in these systems at the point where the diaphragm reaches a stop such as the deflection end where high pressure is required for diaphragm deflection as well. to calculate overpressure conditions; The membrane may be made of inflexible material; Relatively strong It can resist 0 collapse after repeated cycles of high and low pressure. The increase in diameter and decrease in the amount of diaphragm deflection must occur so that high pressure conditions can also be accounted for; It is also possible to significantly increase the size and cost of the pump. Another issue with pressure-based systems is the formation of voids and the increased pressure in the conveying chambers does not typically transfer to the pumped fluid and so Vo creates an unbalanced pressure condition gl (pressure drop) across the membrane. This pressure drop can be attributed to vacuum conditions during certain parts of the piston stroke that may lead to the formation of holes in the hydraulic fluid. The formation of gaps can lead to increased wear (eg pitting) of components exposed to the hydraulic fluid (Sis sued). It should be noted that the uses of the present description are based on the volume as well as the pressure in the hydraulic chamber. Depending on the case of excessive or under-volume. in the hydraulic chamber; The movable valve spool in the hydraulic chamber is shifted between covering positions or detection holes for non-return valves which are placed between a hydraulic reservoir and the hydraulic chamber. Note should be made of the fluid itself as well as the pressure condition generated by the fluid moving the spool. Under-filling and overflowing Yo-volume cases are typically evaluated preferably at either the top or bottom of a stroke or

Piston travel. The present description is such that the valve spool moves only at the top or bottom of the stroke or stroke of the piston to adjust the filling condition under level or overflow. US Patent Applicant Describes Appendix Publication No. 7744846 GAY ea Merged herein by reference; A system controls the position of the diaphragm in the hydraulically driven diaphragm pump© so that the diaphragm operates in a safe range of travel. This system employs a valve spool that moves when the oil-filled transmission chamber is overflowed or under-filled. when the transmission chamber is overflowing with oil; The diaphragm moves too far forward when the piston is at the top of the piston stroke. This flushing site moves the valvular occipital; This opens the port that allows the oil to leave the transmission chamber through a first valve that operates in one 0-way. and the conveying chamber is below the packing level; The membrane moves too far back; Ally moves the valve spool so that the valve slum reveals the port that allows oil to come into the transport chamber through a second bath that works in one direction. Bulletin 7744462 Yoo shows the valve spool positioned along the axis of the membrane; which is axially united with a stalk attached to the center of the membrane. Generally this diaphragm stem is used to counteract the force of the spring guide which puts 1 lof pressure slightly on the oil in the transmission chamber from the fluid opening on the other side of the diaphragm. The stem also has a feature related to the dump when there are overflow or below-level fillings; Thus the valve moved as previously described. The coaxial dump shall be designed to connect with the feature on the shank; while at the same time allowing the coaxial spring to lie either inside or outside the diaphragm stem. The overall configuration and appearance 0 of the diaphragm pump shown in Bulletin 00071/07784466 tends to be complex (Lai) difficult to install; and can result in unwanted spool sizes and other components. The present description provides for simpler components and installation to control a valved system Unused; ie in Bulletin 71/077944 eg .701 This component is an operating member that is attached to a moving part of the diaphragm The operating member is attached to the spool valve to control the yo flow of oil between the transfer chamber and the oil bunker during overflow and under fill conditions the level.

- 1. The operating member allows the valve spool to be positioned on an axis different from that of the diaphragm stem and the spring used to set the diaphragm-guiding pressure. Placing the valve spool on a separate axle can simplify the diaphragm pump in several ways. For example, only the diaphragm shank and the pressure-guiding spring are required for a specific function setting of the pressure-guiding (JU) application. Overall; This means that the spring size can be made smaller and the hole (© diaphragm stem). Also, Jala, placing the Ala spring in which the spring is fixed is smaller (in the spool member does not require a high degree of smoothness so that drilling is required for the valve spool. Another advantage of setting up the valve spool on a separate axis is that the spool is The valve can now be much smaller in diameter, and since the breech no longer needs a hole along its axis to hold the spring guiding the diaphragm, the breech can be much smaller in diameter and the corresponding hole that houses the breech can be smaller The small perforations of both the diaphragm guide spring and the spool expose the smallest area of the generator in the transmission chamber, which causes low stress forces Me of the pump housing to compress the pump in general. The smaller perforations also produce a reduced volume of the oil required in the transmission chamber, which results in a low system volumetric unit and high volumetric efficiency. Vo Another advantage of a separate axle set-up is that the valve spool no longer requires a cylindrical shape. On the installation of a ceramic disc member or other assembly.The flat installation can be a choice Jia flat to fabricate the relatively low clearance sealing interfaces; and in some cases a low-cost design. Ye fe—1 According to Figs. Diaphragm Pump Example of an asynchronous diaphragm pump Shows and describes an example of an asynchronous diaphragm pump 1 Principles of the present description are illustrated by reference to Figs-1; a. Figure 01 shows the pump with normal filling condition. Figure BDC shows the pump piston at DDC with normal packing condition. Figure shows? Piston (TDC) 7? The piston is at LDC YO

Yair

11 - - at BDC with Aad Ala below the level. The figure shows; Piston at top dead center (TDC) with condition ib The 01 Pump includes a VY acrankcase a 0 piston housing and a 11.1 manifold The piston housing is defined as a VE In a warehouse, a VA reservoir ©, a transport or hydraulic room, Ye, and a drum room, YY. Fold 11 is known as the YE pumping band, and it includes valves for entry and exit, VE VY, and the crankshaft, YT, is placed in the connecting leg. YA and slider 1 in the accompanying Ale 11. The slider ve is coupled to the plate YY placed in the plate chamber TY and the transmission chambers and plate YY 718 are in fluid contact with each other so that the withdrawn fluid In or pushed out of the YY drum chamber, the diaphragm is pulled in 0 retracted position or the diaphragm is pushed in an extended position as shown in Figures 1 and 7; Respectively. The diaphragm shank TE extends through the transfer chamber Y and the spring is positioned coaxially with the shank TE to exert directed forces on the diaphragm in a backward direction to help maintain a higher pressure condition in the transfer chamber 1 than in the pumping chamber YE Maintaining the higher pressure condition in the transport chamber 71 can improve the pumping performance under conditions of suction 0 from the inlet. The spool hole 5 is defined in the piston housing VE next to the diaphragm stem 4 7. The spool hole is sized to receive a valved spool 47. The spool bore is OF a size that urges the valve spool ?, which is movable in a direction parallel to the movement of the diaphragmatic stem TE, and the spool (or spool 00 of the valve ??) is movable between a first position that prepares an outlet for the orifice below the filling valve Under level ££ and cover orifice 714 of float valve 7; (see sublevel packing guidance for oY oF figures) 2nd position completely covers holes 01 14 (see Steady State routing for shapes oF oF) 3rd position covers hole 576 and prepares port for hole 14 (See rash orientation of Fig. a.) Close-up views are shown

11 more clearly the open or closed state of the apertures 0 14 in each fe Ir dy of the figures is steady state; below filling level; Under fill valve ££ associated with 01 Jai diaphragm pump, under fill valve includes VE with orifice 07 and surge valve 7 associated with orifice and includes TE valve with orifice 07 and overflow valve £1 accompanied by £6 © slot

AA placed next to the hydraulic chamber OV (gyal packing below level 44 on manhole

UY spring 0101; and OA plug and the filling valve below £5 also includes an EY detection seat so that the spool 0A moves on the TY seat oriented to the Te stopper and the spring 01 moves off the orifice 1 cap. Opening the manhole cover 01 draws the fluid into the conveying chamber

TA BS 17 Filling valve route below level ;;. and the overflow valve £71 includes seat 0 on seat 17 up to the landfill?; To reveal the TA guiding the ball 71 and move the spring Ve and the spring on Yo and when opening the orifice cover 16 (the fluid pushes out of the transfer chamber TE the orifice cover via the overflow valve £71 and it should be noted that the filling valves Below level and overflow are non-return valves that allow fluid to flow in one direction. £7 4 Valve 7; performs an important function setting for spool or spool yo during under-level fill conditions; overflow 18 and the storage Yo control between the transport chamber and the valve spool moves? Depending on the position of the steady state Ye in the transport chamber, an anti-valve YF tip is placed for the gd membrane 47. A tip is installed One of the spool gap EY of the valvular spool OF in the spool gap EF of the valve stem d has a length greater than the amount of diaphragm movement ?? during steady-state operating states. 0 sets the “area” a slight pause"; in which the lever oF the valve filling socket cavity Dla ?; can move freely without movement of the valve cover 7; until overflow occurs or

Yo below the level in the transmission chamber yy a small amount of oil will flow from Gale 01 and with high pressure operation of the pump

TY and hole VY by way of filtering between the drum press VA drum chamber 7? in the warehouse

XY in which the piston of the drum moves through 01 and this loss of oil is replaced by the oil that is drawn into the transmission chamber

Ula and V. 01 filling valve below level; ; During the suction stroke of the pump © from the filling hole below level 07 (as normal operation gia; the dump 7 is placed; to detect

TY This normal position of equilibrium is achieved when the diaphragm JY oY 11 shown in figures and the associated valve stem 47 move the spool (BDC) at its bottom dead center position backwards until the orifice 07 is sufficiently exposed so that the inflow In the conveying chamber £Y through orifice 07 is equal to the flow leaving through the filter between the medicine piston VAY

OY 01 This equalization method takes place on many batches from the pump YY and the hole YY and as soon as the membrane Yo reaches 3 it also moves back and forth with the loss of fluid outside the transport chamber and the amount of fluid entering the transport chambers for 01 for equilibrium in A quantity of fluid leaving the pumping transport room so that Alla remains the landfill 7; Stable until some change occurs in off the valve path The rate of fluid loss changes. In the other locations shown in 47 (spool) the movement of the spool (or spool) and a first common case occurs at .01 depends on the pumping conditions For pump feof dv or fig. 10 When pump operation is stopped, fluid leaks from transfer chamber from 01. Pump operation from FY as a result of pressure applied to the diaphragm VY Gilly VY during filtering between the drum piston

Ve and when restarting the pump .01 or from the sedimentary pressure in the pump OT the spring 0 which causes the diaphragm ?? Outgoing too far back 1 There is little fluid in the conveying chamber (see for example Figs. 3?a. BDC at YY when the drum piston 71 is in the conveying chamber and this condition is the filling current below the indicated level When there is a packing condition (£Y), the spool (FF) which moves with the membrane (oY) moves the level; The valvular arm exposes the filling orifice under the TE so that the dump 47 completely covers the overflow orifice YO.

“yg and with landfill 7; in this position; Fluid is withdrawn at IF oF level 01 (see figures) through filling valve below level; during a stroke or VA of the reservoir 01 transfer chamber less flabby with each stroke OR 01 and as the chamber becomes Transport 01. The suction journey of the pump is a successive journey of the pump; the valve arm £7 connects the valve spool ?; forward ?a. 7 1 to bring the equilibrium position to the definitely steady state previously described by reference to Figures 5 which 01 The second common condition occurs when there is a restriction on the inlet line of the pump A low pressure condition at the inlet and a loss in pressure at the outlet The low pressure condition at the inlet allows the inlet to leave the membrane also forward unusually when the bump is at point ect The overflow And it was found by reference to the figures, Alay, and this case is called (TDC) upper dead. Under level + completely and reveal the overflow hole through the overflow hole 0% and the overflow bath Yo of the fluid after that by moving out of the transfer room

AA Warehouse Gg £7 As previously described; The landfill will search for the equilibrium position to match the unchanging fluid flow until £Y conditions operate and the landfill position remains 01. Leaving and entering transfer room 10 and to prevent landfill 7; From EY pumping to change the cause of movement of the valve stem 9?; The landfill has a device that 01 dampens movement by itself from the forces of oscillation or gravity; The pump must be included

BS of the plunger has 00 of the movement of the plunger 47 until it is attached to the valve stem 7 and a diaphragm is placed and the breech diaphragm generates 50 forces EY and the spring 94 in the breech diaphragm 17 in the breech AY alone. £Y friction on the breech hole Therefore, the landfill does not move 0. It should be noted that bringing the equilibrium point to the steady state for the case of pumping in particular ?a. and during the equilibrium states of the state oY 1 Ja is now also described again by constant reference; landfill 7 is not moving; Until the pumping conditions change. This delicate harmony of fluid flow, or TDC, results from very small changes in the positions of the Yo membrane inside and outside the transmission chamber, and these changes are directly proportional to the leakage rate from the transmission chamber per stroke or BDC Yo.

Yasy

-1and-

walk It is divided by the displacement of the drum. for example; On a seal-less pump having a cylindrical displacement of about 100 mm"; the rate of leakage from the transfer chamber when operating at full pressure will be approximately Tan per stroke. When the valve covers both overflow and filling holes below 0 64 such that that only the fluid leaving the transfer band ©Yo is from leaking around the plunger piston 7"; The position of the stroke or diaphragm walk will move about 1/0000th of the stroke or diaphragm walk. In an example of a displacement of 107" cm, the trip of the VY membrane transition would be about 1.0 dag so the drop in the JSBDC stroke would be about 8 inches. The stroke position or travel of the diaphragm will move 10078 inches backwards with each stroke or travel until the spool begins to expose the fill hole below level 076. Once 0 has opened the fill hole below level 07 a small amount of fluid enters the transfer chamber 0 on each A stroke or a suction walk. and that oil which is subtracted from the rate of the fluid leaving transport chamber 7; Through the FY drum piston, so the net loss is every Jil stroke or journey over the next stroke or journey. In one example; If dump 47 opens 1007 inches on the first move of dump £Y by engagement with valve rod 7 ;; The fluid 1 entering the conveyor chamber yo on the suction stroke can be 0ª” and the net fluid leaving the conveyance chamber yo is only approx 0¨cm.” The next stroke or stroke will only move the landfill 7 ; half as much as the previous movement; And it continues to make small controls with each run or ride. and by practice; This method of adjustment takes several strokes of the 01 pump and less than a few seconds of time; Depending on the pumping process settings. The same 0 method occurs when opening conditions are the cause of Alla rash. The overflow condition occurs when the inlet of pump 01 is restricted and there is low pressure at the outlet of pump 01. Under these conditions the transfer chamber Yo will slowly increase in fluid volume with each stroke; Again in small amounts (JS Tan) (i) stroke). A method similar to the gradual opening of the overflow hole 14 now occurs so that the amount of fluid entering the transport chamber yo from piston winding is equal to the amount leaving

. 476 via overflow valve Yo Transfer Yo

to

1) - - Fig. 1 also shows an air relief valve AA which is designed to allow air to escape from transport chamber 01 (eg during pump operation); However, large leakage of Sa (hydraulic fluid or oil) during operation is prevented. A cam seal (or cam) poppet valve is placed on the TY plate to contain the hydraulic oil in the reservoir IA This plug is not shaped © to maintain the high pressure of the transfer chamber Ye and the high pressure of the Jal chamber 0 is maintained by installing The seal between the tab?? and hole FY The fluid passing through this high-pressure filter between the plate YY and the hole 31 is maintained at the same pressure as the reservoir VA The cam seal of the poppet valve 99 helps maintain fluid in the reservoir VA such that the fluid is separated from the oil in the crankcase AY Example of a diaphragm pump according to figures m -?a

Referring now to Figures 0-1 shows and describes another example of pump 001 that incorporates the principles of the present description. Pump 001 has many of the same features described previously with reference to Figures 1-a. Pump 001 has a different valve spool 7 operated using lever Ae and the valve spool VEY placed in the spool bore Vo ; 1 which avoids the membranous stem TE and the valvular breech is direst for movement in a direction parallel to the direction of movement of the membranous stem 4? and diaphragm FF The lever Eras Av couples the diaphragm stem TE with the spool valve 47. The lever 80 has a MOSH point and first and second connections AE AY The lever Av pivots around the fulcrum AY and is coupled The first linkage AY to the diaphragm stem FE couples the second linkage Af to the spool 0 valve EY The first linkage AY sets up a sliding linkage for the lever Ar on the diaphragm stem FE and puts symbols from the first and second stops 85 AT along the shank

Diaphragm TE to control the travel distance of the lever 80 along the diaphragm stem Fi The defined space between the stops AT (A) is defined as the “minor downtime area” that allows the valve spool to be kept 4 Tl during steady state operation for pump 01 until Yo occurs overflow and under-level filling in conveying chamber 71 and in under-level filling;

117 - - allows the diaphragm 7 to also move backwards in the carriage chamber 0 oF making the stop AT rotate the lever A around the fulcrum AY to move the valvular spool ?; forward to reveal the filling hole under level 07 and in case of overflow; The membrane also moves forward, unlike in the steady state; which causes the stop 8+5 of the lever Ae to rotate around the fulcrum AY to move the valve spool 0 7; backward to reveal the overflow opening 64. Several variations of the valvular occipital arrangements shown by reference to Figures 1-i are possible. In one example; The spool valve and the check and fill valves below the level level can be combined together as a pre-assembled product which is installed as one piece in the pump. In the OAT example, the valvular spool may be arranged so that it moves in a perpendicular direction (or any non-parallel direction) with respect to the direction of movement of the GL) diaphragm and diaphragm. also; The valve stem may be placed laterally or vertically above the diaphragmatic stem; As opposed to placing the valve spool vertically under the diaphragm stem as shown in Figures Joy, the valve spool described with reference to 10 previous examples can be kept in a fixed position as long as there is an adjusted amount of hydraulic oil in the chamber. Jal behind the diaphragm.The valve spool can maintain this steady, static state regardless of the position of the diaphragm during a stroke or a journey between fully extended and fully retracted positions.When in a static static state, the spool covers the openings for non-return valves placed between the transport chamber Thus, the valves are typically operated only when there is a state of overflow or packing below level so that the valve spool moves to expose an orifice to another or to another non-return valve.The specific operation of the relief valves sets some advantages over pressure-based systems Led Ally activates the relief valve at the top or bottom of each piston stroke.The more often the valve is operated, the valve is more susceptible to wear.And

CVA=

Another advantage of the example pumps described here relates to the number of components needed to adjust both the overflow and underfill conditions in the pump. Pressure-based systems typically require separate components for overflow addressing with sublevel packing. The pumps described here, for example, use a single spool member to adjust each overflow and fill below level. also; Valve spools, for example, are used here in conjunction with a pair of relatively simple non-return valves that receive little wear and use causes them to act only when the overflow condition and packing are below level.

The specific efficiency of valve spools limits wear and reduces maintenance potential.

1 One aspect of the present description relates to a micropump incorporating a diaphragm; pump room Ji chamber; fluid 1 and 2 valves; fluid warehouse and valvular spool. The membrane is movable between the first and second positions along the first axis. An opening chamber is defined on one side of the membrane and is designed to hold a fluid to be removed. The transfer chamber on the opposite side of the Say is known as hydraulic fluid. The first and second valves are prepared as valves

Gob works in one direction. The fluid reservoir shall be in fluid contact with the transport chamber on the first and second valves. The valve spool is placed in the transmission chamber to control the fluid flow through the first and second valves. The valve spool is movable along the second axis, which differs from the first axis between many positions in relation to the openings of the first and second valves.

Y. Another aspect of the present description relates to a hydraulically driven pump incorporating a diaphragm; piston"; transfer room fluid warehouse and dump member. The membrane is moveable around the first axis. The transport chamber between the diaphragm is normally known as a hydraulic fluid. The fluid reservoir is in fluid contact with the transport chamber by at least one valve. The landfill member is formed to control the fluid flow between the conveying room and the fluid bunker. and be a member

- 11 -

The landfill is movable for at least one valve when there is an overflow condition or a filling condition below level in the conveying chamber. The spool member is arranged non-coaxial with the first axis. Another aspect of the present description concerns a method for balancing fluid pressure in a hydraulically driven diaphragm pump. A diaphragm pump includes a diaphragm; piston; Transfer chamber © placed between the diaphragm and the piston; fluid warehouse valvular spool and at least one valve that sets up a fluid connection between the fluid reservoir and the transfer room. The steps of the method include moving the piston to move the membrane along a first axis; Move the valve spool relative to at least one valve member to control the fluid flow between the fluid reservoir and the transfer chamber.

The valve stem moves along a second axis that is coaxially united with the first axis.

1 In the previous detailed description; Multiple features are sometimes grouped together into a single personification for the sake of streamlining the description. The method of this description was not interpreted as a reflection of attention since the embodiment of the subject matter to be protected requires more features than those mentioned in an expression expressed in each element of protection. In addition to that; Whenever the following safeguards are reflected; The inventive subject is located below all the features of the only shown anthropomorphism. And therefore; The following elements are incorporated into

Vo Detailed description; With each item standing alone as a separate favorite embodiment. Therefore; The spirit and scope of the appended claims are not to be limited by the description of the preferred versions contained herein.

l

Claims (1)

Nor are the protections 1-1 diaphragm pump “p1:8m01; Included on: A diaphragm movable between the first and second positions along the first axis; 0 pumping chamber on one side of the membrane “diaphragm” prepared pumping chamber ; to carry a fluid to be pumped; Transmission chamber on the other side of the diaphragm is a chamber © Fill with a hydraulic fluid 1 unidirectional first and second valves; 1st fluid reservoir in fluid contact with the transport chamber via the first valve and first tube 1 Conduit A leads directly to the fluid reservoir, and the second valve 4 and the second tube, second conduit, extending 8 directly from the fluid reservoir 0 to the transport chamber: 16 F 20 ?; and 11 valve spools (or spools) placed in the transmission chamber to control the fluid flow from the VY through the first and second valves; The valve spool is moveable (VY) along the second axis, which is different from the first axis 6 04 AH first between a set of positions relative to the openings of the first and second valves. 1 7- A diaphragm pump according to item 1, in which the spool with a valve or ¥ SLE valve spool for movement moveable between first position covering orifices For the first and second valves, a second position covers the holes for the first valve and is removed from the valve ; the bore to the second valve is 560000; And a third position that covers the hole for the second valve is removed from © orifice for the first valve 1 +- the diaphragm pump according to the oF element, in which the valve spool is formed valve spool "to maintain the first position until an overfill condition or la results the Ahad ¥ is under the underfill condition in the transfer chamber Jill that moves; The valve spool. 1;- The diaphragm pump according to item 11 also includes a ¥ valve arm linked to the diaphragm and shaped to connect with the valve spool to move the valve spool when the Als rash is generated overfill condition or Ala fill under; The underfill condition is in the transport room. 1 0— diaphragm pump according to the element ;; In which the valve spool ¥ has a cavity part and the valve arm part SLs for movement in the “same” part without moving the valve spool 80001 valve until the overflow or packing condition is generated; level urges. 1 “- diaphragm pump according to item 1; also incorporating a shank assembly or a diaphragm rod 'and the diaphragm shank assembly comprises a diaphragm stem and a guide member and the diaphragm GLY attaches to the diaphragm and the diaphragm shank assembly forms to apply force directed of the diaphragm in a direction along the first axis 1 7- the diaphragm pump according to item 1; Also included is a plunger piston Y formed for reciprocating movement in the pump, in which the plunger piston 1 and the diaphragm stem are biaxial with each other to set up asynchronous movement of the piston and diaphragm .piston and diaphragm ~~ ¢ –—A 1 La diaphragm pump for element 1 “in which the diaphragm rod assembly to create a pressure condition forms a chamber — YY - ¥ the transfer chamber which is greater than the pressure condition chamber § 1 .pumping chamber 4- Lia diaphragm pump for element 1- in which the valve spool Y includes a fluid jas determined along at least part of the length of the valve spool Y To prepare the fluid flow between the transport chamber and the first and second valves. 01-1 chydraulically driven pump comprising: Y diaphragm movable around a first axis; 'a piston (Sa ¥ ¢) A transfer chamber defined between the diaphragm and the sag piston © chamber thydraulic fluid 1 fluid reservoir in fluid contact with the transport chamber transfer chamber for fluid in one primary direction and a first tube that leads directly to the fluid reservoir Bila through a V valve reserve A and a secondary one-way (BA) valve and a second tube that extends directly from the fluid reservoir 4 To the transfer chamber and 0 the valve spool is formed to control the fluid flow between the transfer chamber and the fluid reservoir 11 and the valve spool is movable with respect to the first and second valves at VY presence of Als Overfill condition or underfill condition under or below 10 level in stransfer chamber and valve spool non-coaxial VE arrangement with first axis ‏ — yy — -11-1 hydraulically driven pump according to item 10; included ¥ also the installation of a diaphragm-coupled diaphragm stem that is movable along the axis The first axis is the structure of the diaphragm leg to use a force directed at the diaphragm. 1 ?1- Hydraulically driven pump according to element VY also incorporating valve stem Valve arm ¥ connected to the diaphragm and formed to connect to the valve spool ¥ To move the valve spool when the overflow condition is detected. overfill or overfill underfill VY The hydraulically driven pump according to element 01 in which the valve spool moves ¥001m? valve in a direction parallel to the first axis -14 1 Method for equalizing fluid pressure in a hydraulically driven diaphragm pump; “a piston” diaphragm on diaphragm pump Jada, ¥ diaphragm and the piston § Two spool valves and a one-way valve and a first conduit that gives © 385 Fluid from the transfer chamber Jill directly into the fluid reservoir 1, a second one-way valve, and a second tube that gives fluid flow directly from the fluid reservoir fluid reservoir 1 to the ciransfer chamber and the method includes the steps A the following: 4 Moving the piston to move the diaphragm along the first axis and 0 moving the valve spool with respect to the first valve in one direction and a second valve in 1: One way to control the fluid flow between the fluid reservoir and the conveying room; In it, the valve spool 1 moves along the second axis without being non-coaxial 01 with the first axis. — No -11 1 method according to VE and in which moving the valve spool includes “keeping the valve spool in a first position restricting fluid flow through” the first valve while moving the diaphragm up to The splashing state of the fluid is present in a room; Transfer and restriction through the second valve while the diaphragm moves until the filling state exists below the level of the fluid in the transfer chamber. 11-1 The method according to item 0; in which the movement of the valve spool includes ¥ the connection of the valve spool to a valve arm; The valvular arm is attached to the membrane .diaphragm Y -17 1 method according to item 40; it has the valve spool defining the defining arecess Y in its side and has JR the first valve to allow the flow of ¥ fluid fluid flow from the transfer chamber to the fluid reservoir; The second valve forms a second valve to allow fluid flow from the fluid reservoir © to the ctransfer chamber, in which the movement of the valve spool 1 involves moving the valve spool into a first position to expose Opening 1" to the first valve and covering an opening to the second valve when Alla has a rash in A coverfill pressure and the valve spool moves to a second position 4 to close the opening to the valve The first and exposing the orifice to the second valve, second valve 0, when there is a filling condition that induces the underfill pressure condition Exists 1 -108 1, the method according to the element VV, in which the valve spool maintains the position ¥ The second position 80 during the steady state operation of the Yasy pump M Y — of diaphragm pump to compensate for fluid leakage from the transmission chamber by means of a piston .piston ¢ 1 14- The method according to “VE” in which the diaphragm pump also includes “air breathing member 06058 to 0160; the method also includes allowing the passage of” air outside the conveying chamber through the air venting chamber bleed member while observing flow; Ll flow of liquid from transfer chamber .transfer chamber <1 1 Lids diaphragm pump for element 1 and includes a plunger piston ¥ formed for reciprocal movement in the pump Cua pump ¥ Both the plunger piston and the spool extend in a parallel direction Parallel Lela ; .direction - “71 1 diaphragm pump according to item?” The valve spool ¥ is set to a slot in the side of the valve spool (YS valve spool). (valve spool ¥ covers the first valve in the second position to set up a fluid connection between the transport chamber and fluid reservoir; the slit does not cover the second valve in the third position to set up a fluid connection between the moving chamber and the fluid reservoir