JP3268375B2 - Bubble removal pump device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a piezo pump, a giant magnetostrictive pump and a diaphragm pump such as an electromagnetic pump for transferring liquid by sucking and discharging the liquid. Therefore, the present invention relates to an improvement in a bubble removing pump device in which the gas lock is not generated.

[0002]

2. Description of the Related Art Conventionally, when a liquid is sucked and discharged, a diaphragm pump such as a piezo pump, a giant magnetostrictive pump, or an electromagnetic pump is driven.

[0003]

However, diaphragm pumps, such as piezo pumps, giant magnetostrictive pumps, and electromagnetic pumps, which have been conventionally used for sucking and discharging liquids, are driven as they are and used for a long time to send liquids. If this continues, bubbles contained in the liquid will adhere to the pump chamber and cause a gas lock, making it impossible to pump out the liquid smoothly. There is a disadvantage of doing so.

Further, there is a disadvantage that air bubbles adhere to the check ball valve on the discharge side, the function of the check ball valve is reduced, and the flow rate becomes unstable.

[0005] Further, there is a disadvantage in that since the air bubbles adhere to the pump chamber, the flow path, the check ball valve, and the like, they become large when the liquid is sucked in, and become small when the liquid is discharged, so that the liquid does not flow. This is because the effective function of the diaphragm is diminished because the generated and attached bubbles absorb the pressing force.

In the case where the flow of the liquid is reduced due to the generation and attachment of air bubbles, the operation is stopped and the gas in the pump chamber is sucked and removed using an inhaler such as a syringe. Disadvantages are that the pump must be stopped and labor is required to remove air bubbles.

Therefore, according to the present invention, gas lock does not occur even when used for a long time, and bubbles adhere to the check valve on the discharge side, the function of the check valve deteriorates, and the flow rate becomes unstable. It is another object of the present invention to provide a bubble removing pump device which does not require a frequent stop of the pump.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a pump, which comprises a pump section having a pump chamber and a drive section for driving the pump section, is connected to an amplifier and transfers liquid. An oscillator that generates a frequency for performing a normal operation of the pump and an oscillator that generates a higher frequency to remove the bubbles when bubbles are generated in the pump chamber are connected to the pump chamber of the pump. An oscillator is switched when bubbles are generated and adhered, and the bubbles in the pump chamber are removed so that gas lock does not occur.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an air bubble removing pump device of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a system diagram of a bubble removal pump device according to the present invention. The air bubble removal pump device 1 includes a pump 2 including a driving unit 2a and a pump unit 2b, and an amplifier 9 connected to the pump 2.
And oscillators (1) 7 and (2) 8.

[0010] The oscillator (1) 7 is an oscillator for generating a frequency for operating the normal bubble removal pump device. The oscillator (2) 8 is an oscillator that generates a higher frequency when bubbles are generated in the pump section 2b in order to remove the bubbles.

That is, during the operation of driving the pump 2, as shown in FIGS. 3, 4 and 5, the oscillator (2) 8 operates the diaphragm 12 of the pump chamber 13 of the pump section 2b of the bubble removing pump device 1. Are generated when air bubbles are generated in the suction flow path 15 and the discharge flow path 16 in order to remove the air bubbles 11, 11, 11,.... Reference numeral 3 denotes a discharge pipe, and reference numeral 4 denotes a suction pipe.

[0012] In order to separate the bubbles 11, 11, 11, 11,... Generated in the pump chamber 13,
It has been clarified experimentally that it suffices to apply shock vibration to the liquid 6 in the pump chamber 13.

Therefore, when the liquid 6 is transferred, the bubbles 11, 1
Are generated in the pump chamber 13 and gas lock occurs, and the gas lock can be removed by driving at a higher frequency than in the normal operation to remove the bubbles 11, 11, 11. .

Normally, the operation is performed by the oscillator (1) 7, and when the bubbles 11, 11, 11,... Are removed, the operation is switched to the oscillator (2) 8. The oscillator (2) 8
An oscillator for outputting a frequency higher than the normal operation frequency. Of course, only the oscillator (1) 7 is used and the oscillator (1)
The frequency of 7 may be shared. Further, a bubble removal waveform may be superimposed on the driving waveform of the oscillator (1) 7.

FIG. 3 is a longitudinal sectional view showing a state in which air bubbles are generated in the flow path and the pump chamber of the bubble removing pump device according to the present invention and gas lock is generated, and FIG. 4 is a bubble removing pump device. FIG. 5 is a longitudinal sectional view showing another state in which bubbles are generated in the pump chamber and gas lock is generated during operation of the pump, and FIG. 5 is bubbles in the flow path and pump chamber of the present bubble removal pump apparatus during operation. FIG. 7 is a longitudinal sectional view showing another state in which the gas lock has occurred.

That is, FIG. 3, FIG. 4 and FIG.
b, the pump chamber 13 and the suction passage 15
FIG. 4 is a partial vertical cross-sectional view showing a state in which bubbles 11, 11, 11,...

As shown in FIGS. 3, 4 and 5, the liquid 6 in the water tank 5 passes from the suction port 14 through the suction flow path 15 in the pump section 2b, and the diaphragm 12 moves right and left by the vibration of the shaft 21. Vibrate. Then, the liquid in the suction flow path 15 flows in the direction of the discharge flow path 16, and the liquid is sent out through the discharge port 14a.

However, as shown in FIG. 3, bubbles are generated in the pump chamber 13 and the bubbles 11 adhere to the surface of the diaphragm 12. Therefore, the force for sending out the liquid 6 is reduced by half.

As shown in FIGS. 4 and 5, bubbles 11, 11, 11,... Generated in the pump chamber 13 not only adhere to the surface of the diaphragm 12, but also It is also generated and adheres to the inside of the flow path 16, the pump chamber 13 and the check ball valve on the discharge side.

As described above, not only adheres to the surface of the diaphragm 12, but also in the suction passage 15 and the discharge passage 16.
Are generated and adhered to the pump chamber 13 and the check ball valve on the discharge side.
The discharge flow path 16 is closed, and the liquid 6 as shown in the table of FIG.
This will make the flow extremely worse.

That is, in the table of FIG. 7, reference numeral 17 indicates the flow rate of the liquid 6, and reference numeral 18 indicates the operation time of the pump 2. When the operation of the operation pump 2 is started, the flow line 20 indicates. Although the flow rate is good,
Becomes longer, the flow rate 17 decreases extremely.

FIG. 2 is a system diagram of another embodiment of the bubble removing pump device according to the present invention. As shown in FIG. 2, the bubble removal pump device 1a of this example is a device in which a timer 10 is further connected to the bubble removal pump device 1 shown in FIG.

As described above, the bubble removing pump device 1 of the present embodiment
As shown in FIG. 2A, by connecting the timer 10, bubbles 11, 11, 11,... in which bubbles 11, 11, 11, 11,.
3, suction channel 15, discharge channel 16, and diaphragm 12
Etc., and the attached bubbles 11, 11, 11,...
Can be automatically removed.

As described above, by connecting the timer 10, even if the pump 2 is operated for a long time, the flow rate becomes unstable during the operation, and bubbles 11, 11, 11, 11... Thereby, there is no need to worry about gas lock, and stable operation of the pump 2 can be continued.

[0025]

The bubble removing pump device according to the present invention has the structure described above, and the following effects can be obtained.

First, since there is no instability in the flow rate and no gas lock due to the generation of air bubbles, the flow rate decreases even when the flow line 19 continues to operate the pump as shown in FIG. The advantage is that the pump can be continuously operated without any trouble.

Secondly, in the conventional pump, when a gas lock occurs during operation of the pump, the path of the pipe already connected and provided with the switching valve is switched by the switching valve.
Air bubbles generated in the tube were removed.

However, in the bubble removal pump device according to the present invention, bubbles generated in the pipe can be instantaneously removed by applying vibration to the diaphragm. Since there is no need to remove the bubbles generated in the work, there is an effect that the work efficiency is extremely high.

Third, if there is no liquid in the pump at the start of use of the pump, it is necessary to suck air from the discharge pipe with an inhaler or the like to prime the pump. The use of the bubble removal pump device of the present invention has an effect that gas is easily emitted.

[Brief description of the drawings]

FIG. 1 is a system diagram of a bubble removal pump device according to the present invention.

FIG. 2 is a system diagram of another embodiment of the bubble removing pump device according to the present invention.

FIG. 3 is a longitudinal sectional view showing a state in which bubbles are generated in the flow path and the pump chamber during operation of the bubble removal pump device according to the present invention, and gas lock is generated.

FIG. 4 is a longitudinal sectional view showing another state in which bubbles are generated in the flow path and the pump chamber during operation of the bubble removal pump device according to the present invention and gas lock is generated.

FIG. 5 is a longitudinal sectional view showing another state in which bubbles are generated in the flow path and the pump chamber during operation of the bubble removal pump device according to the present invention and gas lock is generated.

FIG. 6 is a table showing the flow rate and time during operation of the bubble removal pump device according to the present invention.

FIG. 7 is a table showing the flow rate and time during operation of the conventional pump device.

[Explanation of symbols]

 Reference Signs List 1 bubble removal pump device 2 pump 2a drive unit 2b pump unit 3 discharge pipe 4 suction pipe 5 water tank 6 liquid 7 oscillator (1) 8 oscillator (2) 9 amplifier 10 timer 11 bubble 12 diaphragm 13 pump chamber 14 suction port 14a discharge port 15 suction flow path 16 discharge flow path 17 flow rate 18 hours 19 flow rate line 20 flow rate line 21 shaft

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F04B 17/06 F04B 53/06

Claims (2)

(57) [Claims] An oscillator for generating a frequency for performing a normal operation of the pump, the pump including a pump unit having a pump chamber, and a driving unit for driving the pump unit, the amplifier being connected to the pump unit and transferring the liquid; When an air bubble is generated in the pump chamber, an oscillator that generates a higher frequency to remove the air bubble is connected, and when an air bubble is generated and attached to the pump chamber of the pump, the oscillator is switched,
An air bubble removal pump device wherein air bubbles in a pump chamber are removed so that gas lock is not generated. 2. The air bubble removing pump device according to claim 1, wherein a timer is connected to the pump.