JP2001182662A - Diaphragm air pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diaphragm air pump for preventing failure of a pump body and capable of lengthening the service life of diaphragm rubber. SOLUTION: An air flow rate detecting means 2 is arranged for detecting an air flow rate of a pump body 1, and when the air flow rate detected by this air flow rate detecting means 2 becomes a prescribed threshold value or less, the air flow rate is automatically reduced further.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm type air pump, and more particularly to a diaphragm type air pump which is useful for sending air to an aeration tank in a septic tank for purifying wastewater with microorganisms. .

[0002]

2. Description of the Related Art As a conventional diaphragm type air pump, for example, the flow rate of discharged air gradually decreases due to deterioration of diaphragm rubber provided in a pump body and clogging of an air filter. Eventually, air will not be sent into the septic tank body, and as a result, the aeration tank will rot and the quality of the discharged water will deteriorate, and regular maintenance will be required to prevent this. It has been known that by doing, it is always necessary to keep it in good condition.

[0003]

However, in such a diaphragm type air pump, the state of deterioration of the diaphragm rubber cannot be determined visually.
The fact is that the clogging of the air filter cannot be visually recognized until the internal state, and thus there is no clear criterion. Therefore, the cleaning time and replacement time of each part largely depend on the experience of the person who maintains and manages the pump, and the management state of each pump body greatly varies. In addition, since the frequency of maintenance is legally determined to be three times a year (about 3 to 5 months), internal parts may be damaged during maintenance that is discrete in time. However, it is not always the case that the maintenance person immediately notices and responds, and rather, it is more likely that the operator will be left unattended without noticing the failure.

[0004] Therefore, regarding the damage of internal parts which may cause decisive damage to the function of the diaphragm type air pump, particularly regarding the damage of the diaphragm rubber, the damage is detected and the circuit is stopped by a mechanical mechanism for each manufacturer. It was. However, mechanical mechanisms are at risk of malfunctioning due to transport vibrations, and at the same time, need to be replaced due to physical breakdown of a part of the circuit, which may require replacement of parts. It was not a mechanism. Further, such a diaphragm-type air pump is a passive mechanism that operates only after a trouble has occurred, and it is very problematic that a failure cannot be prevented beforehand. Moreover, regarding the clogging of the air filter, even if the pressure loss increases, it does not lead to the damage of the parts, and the damage given to the pump body is small. Therefore, no clear measures have been taken by any manufacturer.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a diaphragm-type air pump capable of preventing a failure of a pump body and extending a life of diaphragm rubber. To provide.

[0006]

A diaphragm type air pump according to a first aspect of the present invention is provided with an air flow rate detecting means (2) for detecting an air flow rate of a pump body (1). When the air flow rate detected in 2) is equal to or less than a predetermined threshold value, the air flow rate is further reduced by itself.

A diaphragm type air pump according to a second aspect of the present invention sets an upper threshold value higher than the threshold value, and when the air flow rate falls below the upper threshold value, sets the upper threshold value. A notifying means (4) is provided so as to notify the replacement timing of the diaphragm rubber (18) provided in the main body (1) in advance.

According to a third aspect of the present invention, in the diaphragm type air pump, the notifying means (4) is provided with a first preset.
If the pressure falls below the upper threshold value or falls below the threshold value within the predetermined time, the cleaning / replacement of the air filter provided on the pump body (1) is regarded as the time for cleaning / replacement of the air filter. It is characterized by what was done.

According to a fourth aspect of the present invention, in the diaphragm type air pump, the notification means (4) may be set to be equal to or less than the threshold value over a second predetermined time longer than the first predetermined time set in advance. If possible, the diaphragm rubber (18)
The replacement of the diaphragm rubber (18) is notified by regarding the end of the life of the diaphragm rubber (18).

A diaphragm type air pump according to a fifth aspect of the present invention is characterized in that the notification means (4) performs notification using at least one of sound, light and vibration.

According to a sixth aspect of the present invention, there is provided a diaphragm type air pump, wherein a lower threshold value lower than the threshold value is set. The operation of the main body (1) is stopped.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings according to embodiments.

FIG. 1 is a schematic view of an entire septic tank using a diaphragm type air pump according to one embodiment of the present invention. FIG. 2 is a graph showing the relationship between the amount of air and the elapsed time together with the threshold value of each stage when the diaphragm type air pump of the present invention is used. FIG. 3 is a sectional view showing an outline of a diaphragm type air pump according to one embodiment of the present invention. FIG. 4 is a schematic diagram showing an air flow detecting means according to one embodiment used for the diaphragm type air pump of the present invention.

As shown in FIGS. 1 to 4, the diaphragm type air pump of the present invention is provided with an air flow detecting means (2) for detecting the air flow of the pump body (1), and the air flow detecting means (2). When the detected air flow rate becomes equal to or less than a predetermined threshold value, the air flow rate is further reduced by itself.

As shown in FIG. 1, the pump body (1) is connected to an aeration tank (5). For example, a diffusion tube (6) is provided at the tip of the pump body (1). The air is sent from the air diffuser (6) to the aeration tank (5).

As shown in FIG. 1, in addition to the aeration tank (5), the entire septic tank is, for example, a treated water tank (7), a disinfecting tank (8), a discharge hole ( 9), transfer pipe (10), treatment tank (12) and inflow hole (1).
3) A filter medium (14) is provided as needed.

The air flow detecting means (2) detects the air flow of the pump body (1). As the air flow rate detecting means (2), any type and form can be used as long as it can detect the air flow rate of the pump body (1). The air flow detecting means (2) may be provided near the pump body (1) as shown in FIG. 1, or may be provided at another place. In this regard, there is no particular limitation.

The type and form of the air flow detecting means (2) are not limited as described above. For example, as shown in FIG. 4, an air flow path (1) connected to the pump body (1) is used. 15), a sensor (16) may be provided, and a microcomputer (17) connected to the sensor (16) may be used. And the sensor (16)
The microcomputer (17) makes the microcomputer (17) judge and detect the difference by comparing the air flow at each measurement by periodically sampling the air flow inside.

The sensor (16) may simply detect the air flow rate, but may also detect the air flow rate or the internal resistance. The microcomputer (17) may be a microcomputer in which a data table indicating the correlation between the air flow rate and the data from the sensor (16) is incorporated in advance. Further, the threshold value or the like as set from the value of the sensor data at the life of the diaphragm rubber (18) may be set in this data table.

In the present invention, as shown in FIG. 2, when the air flow rate detected by the air flow rate detecting means (2) falls below a predetermined threshold value (B), the air flow rate is further reduced by itself. Is what it is. That is, the pump body (1) has a predetermined threshold (B) as shown in FIG.
From this point, the operation becomes a low air amount operation.

According to the present invention, by adopting such a structure, the air flow rate of the pump body (1) can be always detected by the air flow rate detecting means (2). When the detected air flow rate becomes equal to or less than a predetermined threshold value, the air flow rate is further reduced by itself, and the pump main body (1) can immediately be operated with a low air flow rate. The damage to itself can be reduced in advance, and as a result, the failure of the pump body (1) can be prevented beforehand, and the life of the diaphragm rubber (18) provided on the pump body (1) can be extended. Things.

That is, according to the present invention, the failure of the pump body (1) is prevented beforehand, and the diaphragm rubber (18) is prevented.
Can extend the life of the device.

As shown in FIG. 3, in addition to the diaphragm rubber (18), a driver (19), a permanent magnet (20), an electromagnet ( 21), a mounting base (22), a pump chamber (23), a check valve (24) and the like are freely provided.

Incidentally, the low air amount operation is, for example, as follows.
This is performed by lowering the voltage, lowering the frequency, or increasing the resistance value of the electromagnet coil. This low air flow operation allows the diaphragm rubber (1
In order to reduce the amplitude or frequency of 8), the tensile stress and temperature stress applied to the diaphragm rubber (18) are reduced, and as a result, the life of the diaphragm rubber (18) can be extended. .

Further, an upper threshold value above the threshold value is set, and when the air flow rate becomes lower than the upper threshold value, the diaphragm rubber ( If the notifying means (4) is provided so as to notify the replacement time of (18) in advance, the diaphragm rubber (1) provided on the pump body (1) by the notifying means (4) is provided.
Since the replacement time of 8) is notified, the user can be quickly notified of the replacement time of the diaphragm rubber (18), and the replacement time of the diaphragm rubber (18) for the same user can be notified. You can plan with plenty of time. Therefore, the failure of the pump body (1) is further prevented beforehand, and the diaphragm rubber (1) is prevented.
The life of 8) can be more reliably extended. For example, assuming that the user must switch the pump body (1) to the low air amount operation, the user may actually switch to the low air amount operation earlier in advance, or when the threshold value is reached. Preparations for immediately switching to low-air-volume operation may be made.

The notification means (4) is connected to the pump body (1) and the air flow rate detection means (2) as shown in FIG. It may be provided on the display means (3) for indicating the operating time of the pump body (1), the amount of air, and the like, or may be provided at another place. It is not limited. In addition, the display means (3) may be configured to always display, for example, a post-stop elapsed time display section (11).

The upper threshold value (A) is set to a value higher than the threshold value (B) as shown in FIG. This is before (B).

Further, if the notification means (4) falls below the upper threshold or below the threshold within a first predetermined time set in advance, an air filter provided in the pump body (1) is provided. If the air filter cleaning / replacement is notified by regarding the cleaning / replacement time of the air filter, the user can be quickly notified of the air filter cleaning / replacement time. As
A failure of the pump body (1) can be further prevented, and the life of the diaphragm rubber (18) can be more reliably prolonged.

Specifically, the first predetermined time set beforehand is equal to or shorter than the upper threshold (A) or the threshold (B) shown in FIG. The first predetermined time is the elapsed time required for the decrease in the air flow rate due to the normal deterioration of the diaphragm rubber (18). However, the first predetermined time is shorter than the first predetermined time. If the pressure falls below the upper threshold value or falls below the threshold value, there is a cause other than the normal deterioration of the diaphragm rubber (18) that causes a decrease in the air flow rate. This is because the air filter is clogged. If the pressure falls below the upper threshold value or falls below the threshold value within a first predetermined time set in advance, it is considered that it is time to clean and replace the air filter provided in the pump body (1), Cleaning and replacement Those capable of forming a knowledge that as the notification means (4).

When the notification means (4) falls below the threshold value for more than a second predetermined time longer than the first predetermined time set in advance, the life of the diaphragm rubber (18) is reduced. Assuming that it is time to notify the exchange of the diaphragm rubber (18),
The user can be quickly notified of the life of the diaphragm rubber (18), and as a result, the failure of the pump body (1) can be further prevented, and the life of the diaphragm rubber (18) can be further improved. This will lead to a reliable extension.

Specifically, the second predetermined time set in advance is longer than the first predetermined time, and the pump body (1) starts operating at the threshold (B) shown in FIG. The second predetermined time is the elapsed time required for the decrease in the air flow rate due to the normal deterioration of the diaphragm rubber (18), and is equal to or longer than the second predetermined time. When the pressure falls below the threshold value, it is considered that the air flow rate has decreased due to the normal deterioration of the diaphragm rubber (18), and the second predetermined time longer than the first predetermined time set as described above is considered. If the time becomes equal to or less than the threshold value over a period of time, it is considered that the diaphragm rubber (18) has reached the end of its service life, and the notification of the replacement of the diaphragm rubber (18) and the notification means (4) can be made. It is.

In the above case, for example, after the air filter has been cleaned and replaced, by pressing the operation switch, the notification signal from the notification means (4) can be turned off, and the time for using the air filter is again determined. The count is "0"
And if this falls again below the threshold value within the first predetermined time, the clogging of the air filter is determined again, and the notification is made by the notification means (4). Usually this will be repeated several times,
Apart from this count, the timer from the first use start continues to operate. If this elapsed time becomes longer than the second predetermined time, the count of the first predetermined time is ignored and the diaphragm rubber is given priority. This is to be regarded as the life time of (18).

In particular, if the notification means (4) performs notification using at least one of sound, light, and vibration, the notification is performed using at least one of the sound, light, and vibration. The notification means (4) performs a more reliable notification to the user, and the cleaning / cleaning of the air filter for the pump body (1) can be performed to the user more quickly.
Information such as the replacement time and the life time of the diaphragm rubber (18) can be noticed.

Further, the notification means (4) may be such that a plurality of types of notification of the sound, light and vibration can be made simultaneously by one notification. For example, at the time of notification, sound and vibration may be simultaneously notified, or light and vibration may be simultaneously notified.

A lower threshold value lower than the above threshold value is set, and when the air flow rate becomes lower than the lower threshold value, the operation of the pump body (1) is stopped. If the diaphragm rubber (18) is deteriorated until it becomes lower than the lower threshold value, the diaphragm rubber (18) is not replaced even if it has deteriorated, so that the pump main body (1) does not fail. When the value falls below the value, the operation of the pump body (1) is stopped and the diaphragm rubber (1) is stopped.
It is possible to wait for the replacement of 8), and as a result, it is possible to more reliably prevent the failure of the pump body (1).

More specifically, as shown in FIG. 2, the lower threshold (C) is set to a value lower than the threshold (B). In the elapsed time after the elapsed time in (C), the operation of the pump body (1) is stopped, and the air amount is zero.

The lower threshold is set, for example, at a level of 40% of the full specification, the threshold is set at a level of 60% of the full specification, and the upper threshold is set, for example. , 80% of full specifications. It is preferable that the behavior of the pump body (1) at each value is incorporated in the microcomputer (17).

According to the diaphragm type air pump according to the present invention, as shown in FIGS. 1 to 3, an air flow rate detecting means (2) for detecting the air flow rate of the pump body (1) is provided. When the air flow rate detected by 2) becomes equal to or less than a predetermined threshold value, the air flow rate is further reduced by itself, so that the air flow rate of the pump body (1) is constantly adjusted by the air flow rate detection means (2). When the air flow rate detected by the air flow rate detecting means (2) becomes equal to or less than a predetermined threshold value, the air flow rate is further reduced by itself, and the pump body (1) immediately becomes low. The pump body (1) can be operated in an air amount, and damage to the pump body (1) itself can be reduced in advance. As a result, failure of the pump body (1) can be prevented, and the pump body (1) can be prevented. In which it is possible to extend the life of the diaphragm rubber (18) provided in the.

That is, according to the present invention, the failure of the pump body (1) is prevented beforehand and the diaphragm rubber (18) is prevented.
Can extend the life of the device.

[0040]

According to the diaphragm type air pump according to the first aspect of the present invention, the air flow rate of the pump body (1) can be constantly detected by the air flow rate detecting means (2).
When the air flow rate detected by the air flow rate detection means (2) becomes equal to or less than a predetermined threshold value, the air flow rate is further reduced by itself, and the pump body (1) is immediately operated with a low air flow rate. The damage to the pump body (1) itself can be reduced in advance, and as a result,
The pump body (1) can be prevented from malfunctioning, and the life of the diaphragm rubber (18) provided in the pump body (1) can be extended.

That is, according to the present invention, the failure of the pump body (1) is prevented beforehand and the diaphragm rubber (18) is prevented.
Can extend the life of the device.

According to the diaphragm type air pump according to the second aspect of the present invention, in addition to the first aspect, the notification means (4) replaces the diaphragm rubber (18) provided on the pump body (1). Since the timing is notified, the user can be quickly notified of the replacement time of the diaphragm rubber (18), and the replacement time of the diaphragm rubber (18) is planned with sufficient time for the user. Can be done. Therefore, the failure of the pump body (1) can be further prevented beforehand, and the life of the diaphragm rubber (18) can be more reliably prolonged.

According to the diaphragm type air pump according to the third aspect of the present invention, in addition to the case described in the second aspect, the user can be quickly notified of the time for cleaning / replacement of the air filter. As a result, In addition, the failure of the pump body (1) can be further prevented beforehand, and the life of the diaphragm rubber (18) can be more reliably prolonged.

According to the diaphragm type air pump according to the fourth aspect of the present invention, in addition to the case described in the third aspect, the user can be quickly notified of the life time of the diaphragm rubber (18). As a result, the failure of the pump body (1) is further prevented beforehand, and the life of the diaphragm rubber (18) is extended more reliably.

According to the diaphragm type air pump according to the fifth aspect of the present invention, in addition to the case of any of the second to fourth aspects, the notification is made by using at least one of the sound, light and vibration. The notification means (4) can provide more reliable notification to the user, so that the user can more promptly clean the air filter for the pump body (1), replace the air filter, and replace the diaphragm rubber (18). Information such as the life span can be made noticeable.

According to the diaphragm type air pump according to claim 6 of the present invention, in addition to the above-mentioned case, the diaphragm rubber (18) deteriorates until it becomes lower than the lower threshold value. Not to cause the failure of the pump body (1)
When the pressure falls below the lower threshold, the pump body (1)
Can be stopped and the replacement of the diaphragm rubber (18) can be waited. As a result, the failure of the pump body (1) can be more reliably prevented beforehand. is there.

[Brief description of the drawings]

FIG. 1 is a schematic view of an entire septic tank using a diaphragm type air pump according to an embodiment of the present invention.

FIG. 2 is a graph showing the relationship between the amount of air and the elapsed time together with the threshold value of each stage when the diaphragm air pump of the present invention is used.

FIG. 3 is a sectional view showing an outline of a diaphragm type air pump according to one embodiment of the present invention.

FIG. 4 is a schematic view showing an air flow detecting means according to an embodiment used in the diaphragm type air pump of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pump main body 2 Air flow detecting means 4 Informing means 18 Diaphragm rubber

Claims (6)

[Claims] An air flow rate detecting means for detecting an air flow rate of a pump body is provided, and when the air flow rate detected by the air flow rate detecting means falls below a predetermined threshold value, the air flow rate is further reduced by itself. A diaphragm-type air pump characterized by being made to work. 2. An upper threshold value above the threshold value is set, and when the air flow rate is equal to or lower than the upper threshold value, the replacement timing of the diaphragm rubber provided on the pump body is set. 2. A diaphragm type air pump according to claim 1, further comprising a notifying means for notifying a forecast. 3. When the notification means falls below the upper threshold value or below the threshold value within a first predetermined time set in advance, the time for cleaning / replacement of the air filter provided in the pump body is determined. Regarding the cleaning and cleaning of the air filter
3. The system according to claim 2, wherein the exchange is notified.
The described diaphragm type air pump. 4. The method according to claim 1, wherein the notifying means is configured to set the first preset
When the threshold value is not more than the second predetermined time longer than the predetermined time, it is regarded as the life time of the diaphragm rubber, and the replacement of the diaphragm rubber is notified. The diaphragm type air pump according to claim 3. 5. The method according to claim 1, wherein the notifying means is one of sound, light, and vibration.
The diaphragm type air pump according to any one of claims 2 to 4, wherein the notification is performed by using at least one type. 6. A lower threshold value lower than the threshold value is set, and when the air flow rate becomes lower than the lower threshold value, the operation of the pump body is stopped. The diaphragm type air pump according to any one of claims 1 to 5, wherein: