JP3656820B2 - Air pump device and sewage purification device provided with the air pump device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air pump device and a sewage purification device including the air pump device.
[0002]
[Prior art]
In the sewage septic tank, sewage flows into the inside from the inflow pipe, and the treated purified water is discharged from the discharge pipe. In this sewage septic tank, air for promoting decomposition of filth by microorganisms in the aerobic filter bed is supplied by an air pump device.
[0003]
2. Description of the Related Art It is known that an air flow path switching type air pump device having a plurality of air discharge ports uses an electromagnetic valve having a flow path opening / closing valve element as air flow path switching means. The control of the power supplied to the air pump body is generally a phase control method.
[0004]
Such an air pump device is described in JP-A-10-238473 and registered utility model No. 3013411.
[0005]
[Problems to be solved by the invention]
Sewage septic tanks that require two air piping connections, aeration and backwashing, that are commercially available, generally have different operation patterns in order to bring out the water purification performance of each product. Always. For example, the sewage septic tank A has an aeration air volume of 40 L / min and a backwash air volume of 80 L / min, and the sewage septic tank B has an aeration air volume of 80 L / min and a backwash air volume of 80 L / min. The start / end time of backwashing also differs depending on the sewage septic tanks A and B.
[0006]
One object of the present invention is to provide aeration air volume data, backwash air volume data, and backwash start, which are data for determining an operation pattern of an air pump main body connected to a sewage septic tank that requires connection of two air pipes of aeration and backwash. In the air pump device controlled by the time data and the backwash end time data, it is intended to be able to deal with sewage septic tanks having various operation patterns.
[0007]
Another object of the present invention is to facilitate the maintenance and management of a plurality of types of sewage septic tanks having different operation patterns, and to improve the productivity of the air pump device.
[0008]
[Means for Solving the Problems]
In the present invention, a pump main body for pumping air and discharge air from the pump main body are discharged to one of two discharge ports for aeration and backwash pipe connection provided at the casing at the timing of aeration / backwash. An air pump apparatus comprising: a flow path switching device that switches a flow path of air; a power supply unit that can variably supply power to the pump body; and a control device that controls these devices. A storage means for storing the pattern and a selection means for selecting the operation pattern are provided, and the storage means includes each of aeration air volume data, backwash air volume data, backwash start time data, and backwash end time data. The data is stored as a data group for each operation pattern, and the operation is controlled according to the data group of the operation pattern selected by the operation pattern selection means.
[0009]
The storage means is configured to be detachable.
[0010]
Further, the control device includes data receiving means for receiving write data to the storage means from outside the air pump device, and writes data received from the outside to the storage means.
[0011]
Further, an EEPROM is used as the storage means.
[0012]
And the waste water purification apparatus of this invention connected the said air pump apparatus to the waste water purification tank, It is characterized by the above-mentioned.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
1A and 1B show an embodiment of an air pump device of the present invention. FIG. 1A is an external perspective view, and FIG. 1B is a longitudinal side view showing an internal configuration.
[0015]
This air pump device 10 is an air pump device with a flow path switching device, which receives the discharge air from the pump body 1, followed by the air tank 2, and the pump body 1 into two flow paths (discharge ports 3 and 4). It is the integrated component which accommodated the flow-path switching apparatus 5 and the control apparatus 6 which selectively supply to one of these flow paths in the casing 7 which has the inlet port 7a.
[0016]
Here, the control device 6 controls the discharge air volume adjustment and the air flow path switching device 5 of the pump body 1 for supplying air for aeration or backwashing (bubbling) to the aerobic filter bed tank in the sewage purification tank. To do. In this control, the operation manager operates the switch of the control device 6 to store the aeration air amount data, backwash air amount data, backwash start time data, backwash end time stored in the storage means in the control device 6. Execute with the operation pattern based on each data.
[0017]
FIG. 2 is a block diagram of a control system in the air pump device 10 of the present invention. The control device 6 includes a setting unit 62, a receiving unit 63, a storage unit 64, a power supply unit 65, and a drive unit 66 with the control unit 61 as a center. The pump body 1 is driven and controlled by the power supply unit 65, and is switched. The apparatus 5 is configured to be driven and controlled by the driving means 66.
[0018]
The control means 61 is configured by using a small microcomputer (CPU), performs switch input and display data output with the setting means 62, saves set values with the storage means 64, and It is a center that performs reading, inputs receiving operation pattern data from an external setting device to the receiving means 63, and gives instructions to the power supply means 65 and the driving means 66. Then, various control processes as described later are executed.
[0019]
The storage unit 64 includes an EEPROM with a built-in serial communication function that can be easily connected to the CPU of the control unit 61.
[0020]
The power supply means 65 is configured to perform power control by phase control using a switching element, as in the conventional apparatus. The air volume data stored as the set value is original data for determining this phase angle.
[0021]
FIG. 3 is an external view of the setting unit in the control device 6. The setting unit includes a setting unit 62 and a receiving unit 63, and includes a selected operation pattern display unit 601, a time display unit 602 that displays the current time and backwash time, an air volume display unit 603 that displays the discharge air volume, and the like. Display unit, operation pattern selection switch 604, time setting switch 605, air volume setting switch 606, setting confirmation switch 607, etc., automatic operation mode lamp 608, current time setting mode lamp 609, backwash start time setting mode lamp 610, a mode display lamp such as a backwash end time setting mode lamp 611 and an infrared communication data reception window 612 are provided.
[0022]
The control device 6 is normally in the automatic operation mode state, displays the current time on the time display unit 602, and is in a state where the automatic operation mode lamp 608 is lit. Then, by operating the operation pattern selection switch 604, the operation pattern selected by selecting one operation pattern from among a plurality of setting data groups stored in the EEPROM, which is the nonvolatile memory of the storage means 64, is selected. The setting data of the pattern is called and transferred to a predetermined RAM in the CPU of the control means 61 and used for operation control.
[0023]
FIG. 4 shows a state where the operation pattern “3” is selected in the setting unit of the control device 6, “03” is displayed on the operation pattern display unit 601, and the current time is displayed on the time display unit 602.
[0024]
FIG. 5 shows a storage data group in the EEPROM which is a nonvolatile memory in the storage means 64. The operation pattern data group is stored every 6 bytes. From the top, aeration air volume data, backwash air volume data, backwash start time “hour” data, backwash start time “minute” data, backwash end time “hour” data, backwash end time “minute” Stored in order of data. Here, by storing the backwash end time as the backwash time, data storage for 1 byte can be omitted. In other words, the backwash time is usually about 5 to 20 minutes, and it is stored in 1-byte data amount. Therefore, the backwash end time is 2 bytes for “hour” and “minute”. Can be shortened. As the operation pattern, 6 bytes are stored as one data group from the start address in order from the operation pattern “1”. To read the setting data corresponding to the selected operation pattern, the operation pattern number “ By subtracting “1” and multiplying the result by “6”, the offset value of the head address of each operation pattern can be calculated. That is, when the setting data of the operation pattern “3” shown in FIG. 4 is read, “12” (00C in hexadecimal) obtained by calculating (3-1) × 6 becomes the read start address. The read setting data is transferred to a RAM in a predetermined CPU and used as operation pattern determination data.
[0025]
FIG. 6 is a connection diagram of the CPU 61a of the control means 61 and the EEPROM 64a of the storage means 64. The EEPROM 64a has a built-in synchronous serial communication function, and can be easily transmitted and received by connecting to the CPU 61a through three lines. The communication timing is performed by a synchronization clock from the CLK terminal of the CPU 61a. Write data from the CPU 61a to the EEPROM 64a is serially output from the TX terminal of the CPU 61a and input to the DI terminal of the EEPROM 64a. Conversely, read data from the EEPROM 64a to the CPU 61a is transmitted from the DO terminal of the EEPROM 64a to the RX terminal of the CPU 61a. . As a data reading procedure, when the air pump device 10 is turned on, all data stored in the EEPROM 64a is transferred to the RAM in the CPU 61a, and thereafter the data is transferred between the RAM and RAM in the CPU 61a. Also good.
[0026]
In addition, the control device 6 operates the setting confirmation switch 607 so that the setting value of the currently selected operation pattern can be confirmed and adjusted. By operating the setting confirmation switch 607, it is possible to switch to the automatic operation mode, the current time setting mode, the backwash start time setting mode, and the backwash end time setting mode. The mode lamp 608 is turned off and the current time setting mode lamp 609 is turned on so that the current time can be set by the time setting switch 605.
[0027]
7 (a) and 7 (b) are external views of the setting unit of the control device 6 showing the backwash time confirmation and adjustment method.
[0028]
When the setting check switch 607 in the setting unit of the control unit 6 is operated to select the backwash start time setting mode, the automatic operation mode lamp 608 is turned off, the backwash start time setting mode lamp 610 is turned on and set. The backwashing start time is displayed on the time display unit 602, and the air volume is displayed on the air volume display unit 603. Here, the time setting switch 605 can adjust the backwash start time, and the air volume setting switch 606 can adjust the discharge air volume. Further, when the backwash end time setting mode is selected, the backwash end time setting mode lamp 611 is turned on, and time setting and air volume setting are enabled in the same manner as the previous backwash start time setting mode.
[0029]
FIG. 7A shows the confirmation data of the backwash start time when the operation pattern “3” is selected, the backwash start time is 2:00 am, and the air volume at the time of backwash is 60L. It is displayed that it is set to / min.
[0030]
FIG. 7B shows the confirmation data of the backwash end time when the operation pattern “3” is selected, the backwash end time is 2:10 am, and the air volume at the time of aeration is 40 L / It is displayed that it is set to minutes.
[0031]
The pump body 1 used in this embodiment is a pump having a discharge capacity of 80 L / min when supplying 100% of electric power, and the air volume setting is between a maximum of “80” L / min and “40” L / min. It can be set in increments of 5 L / min. Since the supplied power amount and the air volume are in a substantially proportional relationship, the pump body 1 that achieves an air volume of 80 L / min with 100% power supply can be obtained by operating the air volume of 40 L / min with 50% supplied power. it can. Of course, depending on the characteristics of the pump body 1 to be used, there is a case where there is no proportional relationship, but this can be dealt with by obtaining the relationship experimentally in advance.
[0032]
FIG. 8 shows a specific phase control circuit in the power supply means 65 for controlling the power supplied to the pump body 1.
[0033]
The pump body 1 is connected to the commercial power supply 8 via the power supply means 65. The electric power supply means 65 changes the electric power (AC power supply voltage) supplied to the pump body 1 by performing phase control by the triac TRC1 which is a two-way switching semiconductor element. The triac TRC1 is fired by making the photocoupler PC1 conductive. In order to control the phase of the electric power supplied to the pump body 1 by firing the triac TRC1 at a predetermined phase angle of the AC power supply voltage, the CPU 61a of the control means 61 outputs a zero cross timing signal of the AC power supply voltage from the zero cross detection circuit 61b. Input to the P1 terminal, a trigger signal is output from the P0 terminal to the transistor TR1 when a predetermined delay time has elapsed from this zero cross timing signal (at a predetermined phase of the AC power supply voltage), the photocoupler PC1 is turned on, and the triac TRC1 is turned on. Fire. The predetermined delay time is determined according to the air volume setting data stored in the EEPROM of the storage means 64 by the input from the setting means 62.
[0034]
Since the control device 6 in this embodiment is provided with the receiving means 63 as a setting unit, various data settings for the air pump device can be written in the EEPROM of the storage means 64 by external data communication. Data communication is not limited to wired wireless communication. The control device 6 writes the received data in the EEPROM of the storage means 64 via the CPU 61a.
[0035]
FIG. 9 shows a data setting system for setting various data in the air pump device by infrared communication.
[0036]
The external setting device 9 converts the data group of each operation pattern stored in the CPU to the light emitting element PD1 through the drive transistor TR2, thereby converting it into an infrared signal and transmitting it.
[0037]
The control device 6 of the air pump device 10 receives the transmitted infrared signal (data) from the data receiving window 612, receives it by the light receiving element PTR1 in the receiving means 63, restores it to an electrical signal, and serializes with the CPU 61a via the CPU 61a. Write to the EEPROM 64a of the storage means 64 connected so as to communicate.
[0038]
According to such a data setting system, since the operation pattern data of the air pump device 10 can be easily updated, it is possible to easily cope with an operation pattern of a newly introduced sewage septic tank.
[0039]
Furthermore, by making the EEPROM 64a, which is a non-volatile storage means in the storage means 64 of the control device 6, replaceable as a detachable connection form, it is possible to update the operation pattern data by the external setting device as described above. It is possible to easily cope with the operation pattern of the septic tank appearing in The attachment / detachment method can be realized by adopting a general connector fitting method in which one is male and the other is female. The storage means 64 is not limited to an EEPROM, and a removable IC card, memory card, or the like may be used.
[0040]
FIG. 10 is an external perspective view of the sewage purification apparatus in which the air pump device according to the present invention is connected to the sewage purification tank, and FIG. 11 is a longitudinal side view showing the internal structure of the sewage purification tank.
[0041]
The air pump device 10 supplies air discharged from the discharge port 3 to the sewage purification tank 20 through the aeration pipe 11, and supplies air discharged from the discharge port 4 to the sewage purification tank 20 through the backwash pipe 12. The sewage purification tank 20 purifies the sewage flowing in from the inflow pipe 21 and discharges it from the outflow pipe 22.
[0042]
The inside of the sewage purification tank 20 is divided into a first anaerobic filter bed tank 23, a second anaerobic filter bed tank 24, an aerobic filter bed tank 25, a treated water tank 26, and a disinfection tank 27 from the upstream side. The sewage flowing in from the inflow pipe 21 is sequentially filtered to be purified and discharged from the discharge pipe 22 to the outside of the system.
[0043]
The aerobic filter bed tank 25 includes an upper filter bed 28 and a lower filter bed 29 in two upper and lower stages, and performs an aerobic treatment in the upper filter bed 28. The lower filter bed 29 is a solid matter generated in the aerobic treatment. Is filtered. In order to perform the aerobic treatment, the upper stage filter bed 28 is provided with an aeration diffuser pipe 30 below to discharge air. A backwashing air diffuser 31 is installed below the lower filter bed 29.
[0044]
The aeration diffuser pipe 30 is connected to the aeration pipe 11 to supply air from the discharge port 3 of the air pump device 10, and the backwash diffuser pipe 31 is connected to the backwash pipe 12 to connect the air pump apparatus 10. Air is supplied from the discharge port 4.
[0045]
In the sewage purification apparatus configured as described above, when the sewage purification operation is continued by supplying air to the aeration diffuser pipe 30 of the sewage septic tank 20, the lower filter bed 29 filters solid matter generated by the aerobic treatment. The filter bed itself is blocked. Therefore, the backwashing is performed by switching the flow path from the air pump device 10 so as to periodically supply air to the backwashing air diffuser pipe 31 provided below the lower filter bed 29 and discharge the air.
[0046]
In this way, the administrator of the sewage purification apparatus discharges the backwash air from the backwash air diffuser pipe 31 at a predetermined time interval at a predetermined time interval, and performs aerobic treatment from the aeration air diffuser pipe 30 at other times. The control device 6 is set to discharge air as is done.
[0047]
【The invention's effect】
The present invention is a set of aeration air volume data, backwash air volume data, backwash start time data, and backwash end time data, which are data for determining the operation pattern of the air pump device connected to the sewage septic tank and supplying air. Since it has a function of storing a plurality of data groups and selecting an operation pattern suitable for the sewage septic tank to be connected, an air pump device corresponding to the sewage septic tank having various operation patterns can be provided.
[0048]
In addition, for maintenance operators who maintain and manage multiple types of sewage septic tanks with different operation patterns, there is no need to stock dedicated sewage septic tanks (operating pattern) pump bodies and service parts inside the air pump device, and Maintenance work can be standardized, and for the side that produces the air pump device, the product types can be integrated, so that productivity is improved.
[0049]
In addition, even if the sewage septic tank operation pattern changes due to replacement of the sewage septic tank due to failure or life, the air pump device can respond to the new operation pattern, so the air pump device can be used only by replacing the sewage septic tank. The replacement cost can be reduced.
[Brief description of the drawings]
1A and 1B show an embodiment of an air pump device of the present invention, in which FIG. 1A is an external perspective view of a diaphragm type air pump, and FIG. 1B is a longitudinal side view showing an internal configuration.
FIG. 2 is a block diagram of a control system of the air pump device shown in FIG.
3 is an external view of a setting unit of a control device in the air pump device shown in FIG. 1. FIG.
4 is an external view showing a state where an operation pattern “3” is selected in the setting unit shown in FIG. 3; FIG.
5 is each data stored in the EEPROM of the storage means in the control system shown in FIG.
6 is a connection diagram between the CPU of the control means and the EEPROM of the storage means in the control system shown in FIG.
7 shows a setting operation state in the setting unit shown in FIG. 3, where (a) shows the setting state of the backwash start time and backwash air amount, and (b) shows the backwash end time display and aeration. It is the setting state of air volume.
8 is a phase control circuit diagram in the power supply means of the control system shown in FIG.
9 is a block diagram of a data setting system using receiving means in the control system shown in FIG. 2;
FIG. 10 is an external perspective view of a sewage treatment apparatus in which the air pump device of the present invention is connected to a sewage septic tank.
11 is a longitudinal side view of the sewage septic tank shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Pump main body, 2 ... Air tank, 3, 4 ... Discharge port, 5 ... Flow path switching device, 6 ... Control device, 10 ... Air pump device, 20 ... Wastewater septic tank, 30 ... Aeration pipe for aeration, 31 ... For backwashing Air diffuser, 61 ... control means, 61a ... CPU, 62 ... setting means, 63 ... receiving means, 64 ... storage means, 64a ... EEPROM, 65 ... power supply means, 66 ... drive means.

Claims (5)

A pump body for pumping air, and a discharge air flow path at the timing of aeration / backwashing to one of two outlets for connecting the aeration and backwashing pipes connected to the casing with the discharge air from the pump body In an air pump device comprising a flow path switching device that switches between, a power supply means that can variably supply power to the pump body, and a control device that controls these,
The control device includes a storage unit that stores a plurality of operation patterns and a selection unit that selects the operation patterns. The storage unit includes aeration air volume data, backwash air volume data, and backwash start time data. The air pump is characterized in that each data of backwash end time data is stored as a data group for each operation pattern, and the operation is controlled according to the data group of the operation pattern selected by the operation pattern selection means. apparatus. 2. The air pump device according to claim 1, wherein the storage means is in a detachable connection form. 2. The control device according to claim 1, wherein the control device includes data receiving means for receiving write data to the storage means from outside the air pump device, and writes data received from the outside to the storage means. Air pump device. 4. The air pump device according to claim 1, wherein an EEPROM is used as the storage means. A sewage purification apparatus, wherein the air pump device according to any one of claims 1 to 4 is connected to a sewage septic tank.

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