JPH06501086A - diaphragm and piston pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] diaphragm and piston pump Background of the invention TECHNICAL FIELD This invention relates generally to an improved double-acting diaphragm pump. , more specifically, the pumping that is applied to the fluid that is to be pumped. The force exceeds the force due to air or other fluid pressure directly on the diaphragm. This invention relates to a double-acting diaphragm pump. Such a pump is 2:1.3 : Often referred to as a diaphragm pump for industrial applications.

Traditional, double-acting diaphragm pumps each separate a pump chamber from a pressure chamber. It includes first and second main diaphragms. The pump chamber is pumped or or receiving the fluid or material to be transported, the pressure chamber deflects and therefore pumps, receives a pressurized fluid, such as air, acting on the diaphragm to produce . double acting die Separate diaphragms for diaphragm pumps are commonly used when two diaphragms are used to pump reciprocating motion simultaneously in such a way as to alternately pump fluid from either chamber They are connected by a single shaft. The two pump chambers share a common inlet manifold. It is connected to a common outlet manifold with the hold, so it enters the inlet manifold and A continuous flow of fluid exiting the outlet manifold is provided by the above-described operation of the pump. It will be done.

The force to produce the pumping action by such a pump is determined by the area of the diaphragm. is equal to the pressure per unit area of the diaphragm. Therefore, continuous In double-acting diaphragm pumps that provide output, the pumping force is Limited by the area of the ram.

Therefore, it was necessary to increase the pumping force. Conventionally, the fluid in the pump chamber was A known double-acting diaphragm pump designed to increase the pumping force Separate streams mechanically connected by shafts to spaced apart main pumping diaphragms Equipped with a body pressure diaphragm. This separate fluid pressure diaphragm have a surface area equal to or greater than the pin diaphragm. The pumping force is increased through the mechanical fishing shaft connection to the main pumping diaphragm. are doing. Arrow Corporation, Bryan, Ohio (Aro C.

(assignee of this patent application). U.S. Pat. No. 4,830,586 shows such a device.

Nevertheless, the pressure to pump the fluid can be increased, especially at high operating pressures. There remains a need to provide improved diaphragm pumps with improved operating life. Ta.

Briefly, it comprises a pair of flexible diaphragms interconnected by a shaft; a first pump chamber associated with the other diaphragm and a second pump chamber associated with the other diaphragm. one of the two diaphragms to perform pumping through the pump chamber and A type of double-acting diaphragm that can be operated to reciprocate in response to pressure applied to one side. It concerns pumps. This allows continuous fluid input and output to be controlled by a double-acting diaphragm. This is done by a ram pump. Specifically, the present invention provides for Partly by piston and cylinder giving additional pumping force to the main diaphragm This invention relates to an improvement in the auxiliary pressure chamber formed in the same manner.

The additional force is synchronized with the force derived from the pressure on the appropriate main diaphragm.

Such synchronization is achieved using parallel fluid pressure conduit connections to the auxiliary and pressure chambers. . In this way, additional force can be applied to each of the two pump chambers. Up The method described is that additional auxiliary chambers connected in parallel can be used for additional pumping. It can give you strength.

One object of the invention is therefore to provide at least one auxiliary fluid pressure chamber comprising a first and a second auxiliary fluid pressure chamber. each having an auxiliary pressure housing and an auxiliary piston and cylinder; and a second auxiliary fluid pressure chamber each having a wall defined by the auxiliary piston. , the auxiliary piston is connected to a shaft means moving therewith, and the auxiliary piston is connected to a shaft means moving therewith, and also connected to the second auxiliary fluid pressure chamber parallel to the first pump chamber; said first auxiliary fluid pressure, said source stage being in parallel with said second pump chamber; and fluid conduit means for communicating with the chamber, thereby providing additional fluid conduit means associated with the auxiliary piston. for generating a pumping force and pumping by said first and second pump chambers; An object of the present invention is to provide an improved double-acting diaphragm for driving said shaft means.

The foregoing and other aspects will be apparent from the following details of the invention when considered in conjunction with the accompanying drawing figures. It will become clear from the explanation.

Brief description of the drawing FIG. 1 is a cross-sectional view of an embodiment of the improved double-acting diaphragm pump of the present invention.

Detailed explanation The present invention is illustrated in a preferred embodiment in FIG. This is an improvement over the configuration described in No. 586. Therefore, the present invention is a double-acting diaphragm. It concerns ram pumps. As shown in FIG. 1, the double acting die of the present invention The Yafram pump comprises an inlet manifold 20 and an outlet manifold 18, then two Fluid enters one of the pump chambers 10 or 12 of the pump. Then the fluid from chamber 10 or 12 flows into outlet manifold 20 and subsequently through outlet 50.

When fluid is thus pumped alternately through chambers 10 and 12, the fluid It is continuously pumped from inlet 44 through outlet 50. As known to those skilled in the art Check valves 47, 49, 51 and 53 are provided at the inlet and outlet of each chamber 10 and 12. diaphragms 14 and 16 associated with the pumping chamber to provide fluid flow. chambers 10 and 12 from the inlet manifold 18 to the outlet manifold 20 as the Control the direction of fluid flow through.

The configuration of each of pumping chambers 10 and 12 is virtually the same. Pumping chamber 10 includes a housing 52 and a main diaphragm cooperating with the housing 52; It is formed by a flexible diaphragm 14, which is 14. The diaphragm 14 , is sandwiched between plates 56 and 58 that connect to shaft 22. The shaft 22 is connected to the second reciprocating within the ring 62. The second housing 62 and the diaphragm 14 are Furthermore, a pressure chamber 64 is defined. A fluid pressure conduit 66 is connected from the pilot control valve assembly 28. It is connected to the pressure chamber 64 and acts on the surface area of the diaphragm 14 to 14, i.e., causing a deflection and pumping of fluid through the pumping chamber 10. A high-pressure fluid is supplied to the pressure chamber 64 for the purpose of the high-pressure pumping. Instead, conduit 66 is pilot controlled. It connects to an exhaust pipe controlled by a valve assembly 28 .

Similarly, the pumping chamber 12 is connected to the housing 66 and the main flexible diaphragm 16. Therefore, it is determined.

Diaphragm 16 is held between plates 70 and 72 associated with shaft 60. Ru. The pump 60 is held within a housing 74 that further defines a second pressure chamber 76. ing. A fluid conduit 69 is connected to the second pressure chamber 76 by the control mechanism 28. Ru. Conduit 69 may also lead to an exhaust pipe. The pressure chambers 4o and 76 are arranged alternately. diaphragms 14 and 16 alternately deflect in a reciprocating manner to pump fluid. from the pumping chamber 12 into the pumping chamber 1o and vice versa. conduit 6 6. The operation and flow of pressure to the pressure chambers 64 and 76 via 69 is controlled by the control means 28. It will be done.

The improvements of the present invention include auxiliary pressure chambers 26 and 3 defined by housings 62 and 74. 4 in combination with an additional auxiliary piston 24. Additional auxiliary piston The tube 24 separates the auxiliary pressure chambers 34 and 26 and the pumping chambers 10 and 12 and the shaft 6o. It is roughly coaxial with 22. Therefore, the auxiliary piston 24 is connected to the shaft 60 and the adapter. It is sandwiched between 80 and 80. This assembly reciprocates with shaft 60. auxiliary The direction of movement of the piston 24 in the pressure chambers 34 and 26 is a function of the control means 28. the pressure acting on the piston 24 and the connection to the pressure chambers 34 and 26 through suitable conduits; determined by. Specifically, conduit 66 is in parallel relationship with conduit 90 and is under pressure. It is connected to the chamber 26 so that the chamber 26 and the pressure chamber 64 are pressurized at the same time.

In a similar manner, pressure chamber 34 is connected in parallel with pressure chamber 76 via conduit 91. There is. In this way, pressure chambers 34 and 76 are simultaneously pressurized and 34 and 36 is applied to the diaphragm 16 via the shaft 60. It acts on the fluid inside the cleaning chamber 12.

If the piston 24 has a surface area exactly equal to the surface area of the diaphragm 14 , the total force exerted on the fluid inside the pumping chamber 10 is normally of conventional pumps, i.e. twice that of ordinary double-acting diaphragm pumps.

Similarly, the pressure exerted on the fluid inside pumping chamber 12 is the same as that in pressure chambers 34 and 76. The pressure will double it.

Therefore, piston 24 is typically circular and concentric with axis 60. The shaft 60 is The pressure chambers 34, 76, 26 and 54 each reciprocate and act to transmit force. The movement of the various diaphragms in the diaphragm continues to be pressurized. The surface area of the piston 24 or The effective surface area can be adjusted to any desired size to control the additional force applied to the shaft 60. Note that it may also be legal. For example, the area of the piston 24 is It may be twice the area of the diaphragm 14. Instead, the area of the piston 24 is It may be half the area of the diaphragm 14.

Additionally, a plurality of pistons and cylinders that provide auxiliary pressure are arranged along the axis of the shaft 60. may have been done.

That is, a plurality of auxiliary pistons and cylinders and associated auxiliary chambers are aligned with the axis of shaft 60. The auxiliary pistons and cylinders may be arranged in parallel along the Each of the chambers is suitably connected to a pressure source in parallel with the main pressure chamber to drive the shaft 60 to suitably Apply pressure to the pumping chamber.

Other variations of the invention are also possible. Accordingly, the preferred embodiment of the invention has been described. However, the invention should be limited only by the following claims and their equivalents. Ru.

Continuation of International Investigation Report MIIICo, /rlunl Front Page (81) Designated countries EP (AT, BE, CH, DE.

DK, ES, FR, GB, GR, IT, LU, MC, NL, SE), CA, JP

Claims (3)

[Claims] 1. first and second pump pins that alternately receive and discharge fluid to be pumped; a pumping chamber, the first and second pumping chambers respectively having first and second flexible pumping chambers; said first and second flexible main diaphragms having walls formed by diaphragms; each of the rams having a surface in contact with said fluid, said first and second flexible main diamonds; The flamm also has another surface in communication with the first and second pressure chambers, respectively; receiving pressurized fluid for pumping, the pump further pumping the pressurized fluid; source means for alternately supplying the first and second pressure chambers; The diaphragms are moved together by shaft means for reciprocating motion, and the diaphragms A double-acting diaphragm port that alternately takes the fluid in and out of the pumping chamber. In the at least one auxiliary pressure housing is connected to the first and second auxiliary power pressurized fluid pressure chambers; and an auxiliary piston and cylinder limit, each of said first and second auxiliary fluid pressure chambers. has a wall defined by said auxiliary piston, and said auxiliary piston is integral with it. connected to a shaft means for movement in unison with said first pumping chamber; connecting said second auxiliary fluid pressure chamber and said source means to said source means; Fluid conduit means connecting said first auxiliary fluid pressure chamber in parallel with a second pumping chamber. , thereby creating an additional pumping force associated with said auxiliary piston. the shaft for pumping by the first and second pumping chambers; Double-acting diaphragm pump characterized in that it includes a combination with driving stages . 2. The areas of the first and second flexible main diaphragms and the auxiliary piston are a pumping force that is approximately twice the force associated with the first and second flexible main diaphragms; 2. The double acting diaphragm pump of claim 1, which is substantially equal to provide . 3. The auxiliary piston has a selected multiple of the area of the first flexible main diaphragm. The double-acting dazzler according to claim 1, having a limited area for providing a selected pumping force. Earphragm pump.