DE2455957A1 - Membrane type hydraulic pump - has spring loaded membrane giving double acting pumping stroke on both sides - Google Patents

Abstract

The membrane has two layers of elastic material between which is inserted a plate spring larger than the opening covered by the membrane. The composite membrane is gripped between te fanges of the opening and the spring forces it to blow out on one side to take a C shape. The membrane is attached to two shaft near opposite ends. As they turn, the lower end of the membrane is deflected to bring the whole into an S shape and then the upper end is deflected to make the membrane bow into a C shape the opposite way. This gives a four stroke motion with one suction and one discharge stroke on each side of the membrane during a complete cycle.

Description

The invention relates to a diaphragm pump with "C-S-D" shaped Diaphragm movement.

Diaphragm pumps are used where there is an aggressive liquid is promoted, or where you can get by with less pressure.

Diaphragm pumps known to me at the moment all work with a diaphragm, which are made of an elastic fabric. These membranes are either mechanically, (magazine "Hobby" - No.1 from 3.1.1973 - page 104-105) or by the action of an upper or negative pressure on one side of the membrane in a pulse-like manner Brought movement.

This enables pumping.

("Hobby" magazine - No. ok from 9 May 1973 - pages 90 - 95) With this one Arrangement, only one side of the membrane is used. Next is the sucked in Amount at once, expressed by the full area of the membrane.

The invention is based on the object of developing a pump, which has two separate circles with a membrane and which has the The membrane acts in stages.

Diaphragm pump with '1C-S-D' shaped diaphragm movement.

The solution according to the invention: The membrane is installed with pretension.

In this way we achieve the expansion of the membrane in the rest position on one of the two possible sides.

In practice this is achieved by going into the membrane incorporated a resilient insert that is a certain amount longer than the intended opening in the pump housing. The width of the insert is approx. 2/3 of the intended opening. This insert can be rotated on the other side stored. The remaining opening is covered on both sides with a soft film.

On the spring insert is in close proximity to the bearings on both The rotating mechanism is attached to the sides, with which a rotating force is exerted on the spring insert is generated in the axis of the bearing.

This completely assembled membrane is placed between two tub-shaped Parts that represent the housing attached.

The inlet and outlet opening is on the side where the spring Insert rests.

Membrane Pump with "C-S-D" shaped membrane movement.

How the pump works.

Each work step consists of 4 phases, the pump doing each one of the two sides suck lx and press lx.

1st phase: The membrane is overturned to the right at the bottom.

As a result, it takes the shape of an "S". On the left begins Sucking starts from below, pressing begins on the right side.

The lower belly "of the" S "is enlarged and the upper belly is reduced running.

2nd phase: The upper point is rotated, making the full deflection is guaranteed. At the end of this phase, the left side is filled and the right Side expressed.

3rd phase: The membrane is overturned to the left at the bottom.

Sucking begins on the right side and begins on the left pressing.

4th phase: The upper point is rotated.

It must be ensured that the process begins where the The suction port is and is terminated where the pressure port is. With the reverse The effect is that the membrane pushes the liquid away from it and entails lost.

Diaphragm pump with "C-S-D" shaped diaphragm movement.

The advantages achieved by the invention are: 1. Two are obtained separate chamber.

2. The amount carried is for each pass and in both circles same.

3. The liquid is pushed away from the membrane or drawn in, resulting in a favorable pressure curve and low-vibration operation of the pump is made possible.

4. The pump has few moving parts.

5. Most of the space that the pump takes up can be used as work space be used.

Diaphragm pump with "C-S-D" shaped diaphragm movement.

1. Execution example.

Heart replacement.

In order to reproduce all functions of the heart, one needs three of these "C-S-D" pumps.

One takes over the function of the two main chambers of the heart (A), and two take over the function of the antechamber (B, C).

With both pre-chamber pumps, only one side of the diaphragm is used used. Both of these pumps have the drive on one (inlet) side and the diaphragm comes into the starting position through (for example) spring force.

D - Backing pumps input E - Backing pumps output F - Main pumps input G - Main pumps output. Electronic control: H - Oscilator 1 - Frequency divider J - Synchronized decadic up counter K - Final stages L - Diaphragm drive Membranes Pump with "C-S-D" shaped diaphragm movement.

2. EXAMPLE OF EXECUTION.

Output stage of a propulsion unit for ships that can be used instead of the Can insert water screw.

For this purpose, several membranes are built into a housing, The individual membranes are driven by worm gears and gear wheels, which transmit the force to the membrane by means of a shaft.

The worm wheels are mounted on a shaft and for each following Membrane, the direction of the turns is reversed. (Left and right thread) Thereby the running of the membranes against each other is achieved.

The biggest advantage is that the Diaphragms do not make any noise.

M - housing h - check valves O - diaphragms P - actuator

Claims (1)

Diaphragm pump. Patent claims: diaphragm pump. This shows that the membrane is installed with pretension. As a result, the expansion of the membrane in the rest position is on a of the two possible sides of Daftir, a resilient insert is worked into the membrane, which is a certain amount longer than the intended opening in the pump housing amounts to. The width of the insert is approx. 2/3 of the intended opening. This insert is rotatably mounted on the resting side. the The entire opening with the insert inserted is covered on both sides with a soft film. The rotating mechanism is placed on the spring insert in the immediate vicinity of the bearing attached, with which a rotational force is generated on the spring insert in the axis of the bearing will. The inlet and outlet openings are on the side where the spring is located Insert rests. The membrane is made of a resting place in the opposite direction, with brought a sinusoidal deformation.