KR970001269Y1 - Reciprocating pump - Google Patents

Abstract

None.

Description

Reciprocating Pump

1 is a cross-sectional view of a main part of a pre-piston pump showing a first embodiment of the present invention.

Figure 2 is a cross-sectional view of the main portion of the pre-piston pump showing a second embodiment of the present invention.

3 is a sectional view showing the main parts of a pre-piston pump showing a third embodiment of the present invention.

4 is a sectional view of principal parts of a purification apparatus showing an application example of a pump according to the present invention.

* Explanation of symbols for main parts of the drawings

1: pump 2: cylinder

4 piston 5 pressure chamber

7 inlet port 8,9 outlet port

20: diaphragm

The present invention relates to a reciprocating pump, and more particularly, to a reciprocating pump having a plurality of discharge ports.

As a relatively compact compression pump, a movable body having a magnet or a magnetic body portion is reciprocated in the pressure chamber by the action of the suction force of the electronic circuit to change the volume of the pressure chamber and to discharge and suck the fluid such as air. .

In addition, the diaphragm connected to the movable body is vibrated by reciprocating the movable body having the magnet or magnetic body portion in the pressure chamber by using the suction force of the electronic circuit, and the air volume is changed by changing the volume of the pressure chamber having the diaphragm as one wall surface. It is also known to be configured to discharge and aspirate fluids.

As an example of the former reciprocating pump, there is a thing described in Unexamined-Japanese-Patent No. 2-47268, and an example of the latter reciprocating pump is the thing of Unexamined-Japanese-Patent No. 63-176680.

The above reciprocating pump had the following technical problem to be solved. In some cases, the fluid discharged from the reciprocating pump (hereinafter referred to as a pump) may be supplied to a plurality of places for use. By the way, the supply amount of the fluid to each of these plurality of places of use is not necessarily the same. In other words, the amount of fluid required varies depending on the application, and conventionally, the amount of fluid is adjusted at the branch point after the discharge port so as to match each application, but a plurality of pressure chambers of the pump are provided in accordance with the amount of discharge to cope with the problem.

As a result, there is a problem in that the structure of the pump becomes complicated and the opening and closing adjustment operation by the valve for adjusting the fluid amount after the discharge port is cumbersome.

An object of the present invention is to solve the problems of the prior art and to provide a pump capable of obtaining various discharge amounts by a simple configuration.

In order to solve the above problems and achieve the object, the present invention provides at least one suction port and a plurality of discharge ports in a pressure chamber in which a volume is changed by a reciprocating drive source, and by one reciprocating motion in the plurality of discharge ports. It is characterized in that the amount of fluid discharged is different from each other.

In the present invention having the above characteristics, different amounts of fluid are discharged from each discharge port in one discharge distance when the pressure chamber container is changed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is a sectional view showing main parts of one embodiment of the present invention. In the figure, a pre-piston (hereinafter referred to as a piston) that reciprocates in the cylinder 2 in the direction of the arrow 3 by the action of a spring and an electronic circuit (not shown) in the cylinder 2 of the pump 1. (4) is accommodated. The piston ring 6 is fitted in the circumference | surroundings of the front end of this piston 4, and is attached. The piston 4 reciprocates between the position indicated by the solid line in the figure, that is, the bottom dead center to the position indicated by the dashed line, that is, the top dead center (that is, the stroke S minute).

In the pressure chamber 5 formed of the front end surface of the piston 4 and the cylinder 2, one inlet 7 is provided at its front wall and two outlets 8, 9 at its side wall. Behind the inlet 7 is provided a spring chamber 11 in which the compression coil spring 10 is accommodated. An introduction port 12 is provided on the side opposite to the suction port 7 of the spring chamber 11. The inlet valve 13 is disposed in the inlet 12, and is elastically supported in the closed valve direction by the compression coil spring 10.

The spring chamber 15 in which the compression coil spring 14 was accommodated is provided behind the discharge port 8. A discharge valve 16 is disposed in the discharge port 8 and elastically supported in the closed valve direction by the compression coil spring 14. Similarly, a spring chamber 18 in which the compression coil spring 17 is accommodated is provided behind the discharge port 9, and a discharge valve 19 is disposed in the discharge port 9.

The ejection openings 8 and 9 are arranged such that the opening position with respect to the pressure chamber 5 is shifted by a predetermined amount from each other in the axial direction of the piston 4, that is, the reciprocating direction 3.

The pump 1 configured as described above operates as follows. First, when the piston 4 retreats at the top dead center, the pressure in the pressure chamber 5 decreases, the discharge valves 16 and 19 are closed while the intake valve 13 is opened, and air is introduced from the inlet 12. Air is sucked into the pressure chamber 5 through the suction port 7. When the piston 4 retreats to the bottom dead center, the maximum amount of air is sucked into the pressure chamber 5.

When the piston 4 starts to move to the top dead center in this state, the air in the pressure chamber 5 is compressed, the intake valve 13 of the inlet 12 is closed, and the outlets 8 and 9 are discharged. The valves 16 and 19 are opened, and the air in the pressure chamber 5 is discharged to an external device connected to the pump 1.

At this compression distance, the discharge port 8 is closed by the piston ring 6 in a state where the piston movement amount reaches S1. That is, at this point, the discharge of air at the discharge port 8 is stopped. Moreover, the discharge port 9 is closed by the piston ring 6 in a state where the piston 4 moves and the movement amount at the bottom dead center reaches S2, that is, the piston 5 reaches almost the top dead center.

As described above, in the present embodiment, the piston 4 is fixed by the predetermined amount of stroke S while the displacement positions of the two discharge ports 8 and 9 are shifted by the predetermined amount S2-S1 in the reciprocating direction of the piston 4. Despite the reciprocating motion, it is possible to have a difference in the amount of air discharged from the two discharge ports.

Therefore, the air discharged from the discharge ports 8 and 9 can be supplied to a separate device or place of use requiring a different amount of air, without providing other equipment such as an adjustment valve on the way.

In the above-described embodiment, the opening opening position of the discharge port is shifted in the reciprocating direction of the piston, thereby making a difference in the opening time of the discharge valve, and as a result, two types of air discharge amount are obtained. On the other hand, in the second and third embodiments to be described later, the difference in the elastic support force of the discharge valves provided in the two discharge ports is set so as to differ in the opening degree of each discharge valve, resulting in a different discharge amount. .

2 and 3 are sectional views of main parts of the pump showing the second and third embodiments of the present invention, and the same reference numerals as those in FIG. 1 denote the same or equivalent parts.

In FIG. 2, the pressure in the pressure chamber 5 rises as the piston 4 moves from the bottom dead center to the top dead center. When the pressure exceeds the load of the compression coil springs 14 and 17 elastically supporting the discharge valves 16 and 19, the compression coil springs 14 and 17 are compressed and the discharge valves 16 and 19 are The retracted openings 8 and 9 are opened. In this second embodiment, the discharge valves 16 and 19 are provided on the side walls of the pressure chamber 5 so as to face each other on the opposite side in the radial direction, and the compression coil springs 14 and 17 elastically supported in the closed valve direction, respectively. ) Have different spring strengths. Therefore, even when the same air pressure acts on the discharge valves 16 and 19, there is a difference in the amount of deformation of the compression coil springs 14 and 17, that is, the opening degree of the valves H1 and H2. By the difference of the opening degree, the amount of air discharged from the discharge ports 8 and 9 can be made different.

In addition, the discharge valves 16 and 19 may be provided on the same circumference without opposing each other in the radial direction of the pressure chamber 5, or may be provided on the front wall of the pressure chamber 5 as in the third embodiment. .

In the pump of the embodiment shown in FIG. 3, the diaphragm 20 is coupled to a vibrator 4A reciprocated by the action of an electronic circuit (not shown), and the pressure chamber is reciprocated by the diaphragm 20. The air is sucked into (5) and the air is discharged. In addition, although the two discharge ports 8 and 9 are provided in the front wall of the pressure chamber 5, you may provide in the side wall of the pressure chamber 5 similarly to 2nd Example.

In the same figure, the pressure chamber 5 is formed by fixing the peripheral part of the diaphragm 20 with the groove | channel formed in the pump main body 21, and the installation ring 22. As shown in FIG. In a state where the diaphragm 20 is fitted with the washers 22a and 22b, the bolt 22 formed at the distal end portion of the vibrator 4a is allowed to pass through the diaphragm 20 by the bolt 22 and the nut 23. ) And the vibrator 4a.

When the vibrator 4a is elastically supported by the suction force of the electronic circuit (not shown) and the repulsive force of the spring, the diaphragm 20 vibrates from side to side in the illustrated state. When the pressure in the pressure chamber 5 exceeds the load of the compression coil springs 14 and 17 elastically supporting the discharge valves 16 and 19 in the compression process of the pressure chamber 5 by this vibration, the discharge valve 16, 19 is retracted, and the discharge ports 8 and 9 are opened.

In this third embodiment, like the second embodiment described above, the compression coil springs 14 and 17 have different spring strengths. Therefore, even when the same air pressure is applied to the discharge valves 16 and 19, there is a difference in the amount of deformation of the compression coil springs 14 and 17, that is, the opening degree of the valve. By the difference of the opening degree, the amount of air discharged from the discharge ports 8 and 9 can be made different.

In addition, in the above-described embodiment, an example in which the intake valve 13 and the discharge valves 16 and 19 are configured to be elastically supported by the compression coil spring has been described, but the type of the valve is not limited thereto, and the intake valve or the discharge valve itself is described. It may be formed of a plate member having elasticity so as to omit the compression coil spring.

Therefore, when the discharge valve is formed from the plate having elasticity, it is possible to make a difference in the opening degree of the discharge port under the same pressure by appropriately selecting the elastic force of the plate itself.

Subsequently, an application example of the pump described above will be described. 4 is a sectional view of principal parts of a septic tank, showing an application example of a pump according to the present invention. In the figure, the septic tank 24 is divided | segmented into several tank by the partition plate 25. As shown in FIG. In the settling tank 26, the contaminated water which flowed in the initial stage settling tank which is not shown in the previous stage of this settling tank 26 stays. In the settling tank 26 and the initial stage settling tank, contaminated water is precipitated. The sedimentation tank is filled with bacteria or soil containing bacteria, which acts on the contaminated water to make mud and promote sedimentation.

The upper portion of the contaminated water staying in the settling tank 26 flows into the air exposure tank 27 installed in the next step from the passage hole provided in the separator 25. In the air exposure tank 27, an air dispersion pipe 28 and a mud lifting air lift pump 29 are disposed. The air lift pump 29 consists of the outer cylinder 29a, the air supply section 29b inserted in it, and the foam member 29c provided in the front-end | tip of this air supply pipe 29b.

In the air exposure tank 27, purge is promoted by contacting the contaminated water with the air released and diffused into the contaminated water from the air dispersing pipe 28.

By the way, in the initial stage sedimentation tank (not shown), because a certain amount of mud containing bacteria is present, precipitation is promoted more. Therefore, when the amount of mud containing bacteria decreases, mud production is lowered. Thus, part of the contamination of the air exposure tank 27 in the air lift pump 29 is transferred to the initial stage precipitation tank to maintain the amount of bacteria and mud in the initial stage precipitation tank.

That is, the air introduced from the air supply pipe 29b of the air lift pump 29 is discharged as bubbles in the outer cylinder 29a in the foam member 29c. When this bubble rises in the outer cylinder 29a, the mud which settled at the bottom of the air exposure tank 27 is lifted with foam, and is conveyed to an initial stage precipitation tank. The water purified in the air outlet 27 is finally discharged to the outside through a sterilization tank (not shown).

Compressed air is supplied from the pump 1 shown in the above-described embodiment to the air dispersion pipe 28 and the air supply pipe 29a. The discharge amounts of the air discharged from the two discharge ports provided in the pump 1 are mutually different as described above. Therefore, piping is performed so that the air discharged from the discharge port from which the small discharge amount is obtained is connected to the air supply pipe 29b, and the air discharged from the discharge port from the high discharge amount is connected to the air dispersion pipe 28.

By using the pump 1 of the present invention as described above, the compressed air can be supplied to the septic tank with the discharge amount set in two stages without installing the flow adjusting part in the middle.

In the present embodiment, a pump having only two discharge ports is shown, but the number of discharge ports is not limited to two but two or more pumps can be implemented in the same manner as the present embodiment.

Moreover, it is a matter of course that it is not limited to using the suction force and repulsion force by an electronic circuit and a spring as a drive source which reciprocates a piston, Of course, you may use a motor.

In the first and second embodiments, the piston 4 and the third embodiment, the diaphragm 20 constitutes a reciprocating member. In addition, the compression coil spring 14, the discharge valve 16, and the compression coil spring 17 constitute a discharge valve 19 and a leaf spring, and these valve mechanisms and the discharge ports 8, 9 are Configure the discharge mechanism. In addition, as shown in the first embodiment, discharging ports 8 and 9 are provided to be displaced in the axial direction of the cylinder 2, and as in the third embodiment, the elastic support force of the valve mechanism is made different from each other. .

As can be seen from the above description, according to the present invention, different discharge amounts of a plurality of stages are obtained at separate discharge ports by a simple configuration. As a result, in applications requiring two or more types of discharge amounts, there is no need to provide a flow rate adjusting valve between the pump and the place of use or the equipment used, and the troublesome operation of the valve is also eliminated.

Claims (4)

The pressure chamber 5 whose volume changes due to the reciprocating motion of the reciprocating members 4 and 20, the suction port 7 communicating with the pressure chamber 5, and the plurality of discharge ports 8 communicating with the pressure chamber. 9 and discharge mechanisms 8, 9, 14, 15, 16, 17, 18 having valve mechanisms 14, 16 and 17 and 19 provided therein and elastically supported in a direction in which these discharge ports are normally closed. In the reciprocating pump (1) provided with (19), the discharge mechanism (8, 9, 14, 15, 16, 17, 18, 19) is the pressure chamber (5) of the reciprocating member (4, 20) And changing means for changing the discharge amounts of the plurality of discharge ports 8, 9 of the pressurized fluid in the pressure chamber 5 with the passage of time by the movement in the direction of decreasing the volume of the diaphragm. Reciprocating Pump. 2. The reciprocating member according to claim 1, wherein the reciprocating member is a piston (4) for reciprocating sliding in the cylinder (2), and the changing means includes the plurality of discharge ports (8, 9) of the discharge mechanism in the pressure chamber of the piston. A reciprocating pump, characterized in that the cylinder (2) is installed by shifting each other by a predetermined amount in the reciprocating direction (3) of the piston (4) so as to be closed in sequence by the movement in the direction to reduce the volume of. 2. The reciprocating member according to claim 1, wherein the reciprocating member is a piston (4) for reciprocating sliding in the cylinder (2), and the means for changing the pressure chamber (5) to each other of the valve mechanism (14, 16; 17, 19). Reciprocating pump, characterized in that configured by different elastic support force in the) direction. 2. The reciprocating member according to claim 1, wherein said reciprocating member is a diaphragm (20) which vibrates electronically in the direction of the central axis of said pressure chamber (5) in said cylinder (2), and said changing means includes said valve radii (14, 16); 17 and 19, characterized in that the reciprocating pump, characterized in that it is configured by varying the elastic bearing force in the direction of the pressure chamber (5).