JP2017225928A - Filter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion exchange type iron removal-manganese removal device and a filter device capable of easily obtaining dilution water diluting the stock solution of sodium hypochlorite.SOLUTION: Provided is a filter device 1 comprising: an ion exchange type iron removal-manganese removal manganese tank 11; a water supply pipe 13 provided at the middle part of the water supply pipe 13 and connected to the secondary side of the iron removal-manganese removal tank 11; an electromagnetic opening-closing valve 13a connecting the primary side and the secondary side of the water supply pipe 13 and the primary side of the water supply pipe 13 and a drainage destination by opening-closing; a temperature sensor 17 detecting the temperature of the iron removal manganese removal tank 11; and a control board 18 for, in the case where the temperature detected by the temperature sensor 17 is a freezing temperature T or lower continuously for a prescribed time, controlling the electronic opening-closing valve 13a and connecting the primary side of the water supply pipe 13 and the drainage destination.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an ion exchange type filtration apparatus.

  Currently, in order to treat well water from a well into drinking water, a technique is known in which iron and manganese are removed from well water by a filtration device using a manganese removal tank. Moreover, what is called an ion exchange type iron removal manganese removal tank using ion exchange resin is known as a iron removal manganese removal tank used for such a filtration apparatus (for example, refer patent document 1).

  Such a filtration device injects sodium hypochlorite into well water treated in the iron removal manganese removal tank and disinfects the well water, thereby treating the well water into drinking water.

JP 2012-233636 A

  The above-described filtration device has the following problems. That is, since the iron removal manganese removal tank using ion exchange resin is mainly composed of a resin material, a heater or the like cannot be directly provided in the tank in order to prevent freezing in the tank. For this reason, in an area where freezing is expected, it is necessary to provide a hut for installing a filtration device, and to take measures such as keeping the room temperature in the cabin constant, which causes a problem that the equipment cost increases.

  For such a problem, for example, the filtration device detects the temperature such as the outside air temperature or the water temperature, and when the temperature is expected to freeze, the flow device is opened and the filtration device is driven, and the temperature is not frozen. In some cases, it is conceivable to perform open / close control to close the flow path.

  However, when opening / closing control is performed only by temperature detection, the filtration device is continuously driven unless the temperature is higher than the return temperature at which the channel is closed after the channel is opened. As a result, there is a problem that the driving cost of the filtration device is increased and the regeneration cycle of the filter medium such as an ion exchange resin is shortened.

  Therefore, an object of the present invention is to provide an ion exchange type filtration device that can easily prevent freezing.

  In order to solve the problems and achieve the object, the filtration device of the present invention is configured as follows.

  As one aspect of the present invention, the filtration device is provided in an ion exchange type iron removal manganese removal tank, a water supply pipe connected to a secondary side of the iron removal manganese removal tank, and a middle portion of the water supply pipe, An electromagnetic on-off valve that connects the primary and secondary sides of the water supply pipe by opening and closing, and a primary side and a drainage destination of the water supply pipe, a temperature sensor that detects the temperature of the iron removal manganese tank, and the temperature sensor And a control panel that controls the electromagnetic on-off valve to connect the primary side of the water supply pipe and the drainage destination when the temperature detected in step S is continuously below the freezing temperature for a predetermined time.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the ion exchange-type filtration apparatus which can prevent freezing easily.

The side view which shows the structure of the filtration apparatus which concerns on one Embodiment of this invention. FIG. 3 is a plan view showing the configuration of the filtration device with a part cut away.

Hereinafter, the filtration apparatus 1 which concerns on one Embodiment of this invention is demonstrated using FIG.1 and FIG.2.
FIG. 1 is a side view showing a configuration of a filtration device 1 according to an embodiment of the present invention, and FIG. 2 is a plan view showing the configuration of the filtration device 1 with a part cut away.

  As shown in FIG. 1 and FIG. 2, the filtering device 1 includes a base 10, a iron removal manganese removing tank 11 provided on the base 10, a sterilizer 12 provided on the base 10, and a iron removal product. A water supply pipe 13 for connecting the manganese tank 11 and the sterilizer 12, a branch part 14 provided in the middle of the water supply pipe 13, an on-off valve 15 connected to the branch part 14, an on-off valve 15 and a sterilizer 12, a pipe 16, a temperature sensor 17, and a control panel 18 are provided.

  The base 10 is fixed to the installation surface of the filtration device 1. The base 10 is configured such that an iron removal manganese removal tank 11 and a sterilizer 12 can be disposed adjacent to each other on the upper surface thereof. Further, the base 10 includes a gantry 10 a on which the control panel 18 is disposed above the sterilizer 12.

  The iron removal manganese removal tank 11 is a so-called ion exchange type iron removal manganese removal tank using an ion exchange resin as a filter medium. The iron removal manganese removal tank 11 includes, for example, a salt water tank 21, a resin cylinder 22 provided in the salt water tank 21, a control valve 23 provided at the upper end of the salt water tank 21, and a control valve 23 on the salt water tank 21. And a support 25 for fixing the salt water tank 21 to the base 10.

The salt water tank 21 is connected to a supply pipe 21a for supplying salt water.
The resin tube 22 contains an ion exchange resin therein. The resin cylinder 22 includes a watering pipe fluidly connected to the control valve 23 above the inside thereof, and a water collecting pipe fluidly connected to the water supply pipe 13 below the inside thereof. The resin cylinder 22 can remove iron, manganese, impurities, etc. in the well water by allowing the well water discharged from the water spray pipe to pass through the ion exchange resin and be discharged from the water collection pipe to the water supply pipe 13 on the secondary side. Composed. The primary side of the resin cylinder 22 is connected to a pipe connected to the well and a pump for pumping well water.

  The control valve 23 is connected to a water supply pipe connected to the well. The control valve 23 is opened and closed to perform normal operation, backwash operation for washing the resin cylinder 22, regeneration operation for passing salt water through the ion exchange resin and discharging iron and manganese, and the salt water tank 21. Switch the water injection operation to perform water injection.

  The sterilizer 12 includes a base 31 fixed on the base 10, a tank 32, a piping unit 33, a chemical solution injection unit 34, a connecting pipe 35, and a control unit 36. The primary side of the sterilizer 12 is connected to the iron removal manganese removal tank 11 through the water supply pipe 13 on the primary side of the connecting pipe 35. The sterilizer 12 has a secondary side of the connecting pipe 35 connected to a water supply destination such as a faucet or a tank for treated water.

The sterilizer 12 is configured to be able to inject the chemical solution into the well water flowing through the water supply pipe 13 processed in the iron removal manganese removal tank 11. As the chemical solution, sodium hypochlorite having a predetermined concentration obtained by diluting a stock solution of sodium hypochlorite having a predetermined concentration charged into the tank 32 with dilution water is used.
The base 31 has a top surface with different heights, and is a pedestal that supports the tank 32, the chemical solution injection means 34, and the connecting pipe 35.

  The tank 32 is formed of a resin material, and is formed so that a predetermined amount of chemical liquid can be stored therein. The tank 32 is fixed to the base 31. The tank 32 includes a tank body 32a for storing sodium hypochlorite, an inlet 32b for supplying a sodium hypochlorite stock solution, a lid 32c for covering the inlet 32b, provided on the upper surface of the tank body 32a, A water level detection memory 32d configured to be able to visually recognize the water level of sodium hypochlorite in the tank body 32a. The tank 32 is fluidly connected to a pipe 16 connected to the branch portion 14 of the water supply pipe 13 via the on-off valve 15.

  The tank 16 is connected to the pipe 16. The input port 32b is an opening provided on the upper surface of the tank body 32a. The lid 32c covers the insertion port 32b. The water level detection memory 32 d is provided in the tank main body 32 a adjacent to the water supply pipe 13.

  The piping unit 33 is connected between the tank 32 and the chemical liquid injection means 34 and constitutes a flow path for the chemical liquid from the tank body 32 a to the chemical liquid injection means 34.

  The chemical solution injection means 34 pumps a fixed amount of the chemical solution and connects the pump 34 a that can be injected into the connecting pipe 35, the pump 34 a and the connecting pipe 35, and the chemical solution injected into the connecting pipe 35 and the well water flowing through the connecting pipe 35. And a chemical solution injection part 34b formed so as to be able to prevent backflow of the liquid. The pump 34a is, for example, a diaphragm pump that reciprocates by a solenoid. The chemical solution injection part 34b includes a flexible resin tube and a check valve.

  The connecting pipe 35 is provided with a flow rate detector 35a on the primary side. The connecting pipe 35 is connected to the chemical liquid injection part 34b on the secondary side. The connection pipe 35 has a primary side connected to the water supply pipe 13 and a secondary side connected to the water supply destination. An electromagnetic valve that opens and closes the flow path of the connecting pipe 35 is provided on the secondary side of the connecting pipe 35.

  For example, the control unit 36 is configured to be able to control the injection amount of the chemical liquid injected from the pump 34a into the connecting pipe 35 by controlling the solenoid of the pump 34a based on the flow rate detected by the flow rate detector 35a. .

  One end of the water supply pipe 13 is connected to the secondary side of the iron removal manganese removal tank 11, and the other end is connected to the connecting pipe 35. The water supply pipe 13 is configured by a combination of a vent pipe, a straight pipe, a flexible tube or hose, a branch pipe, and the like. The water supply pipe 13 has an electromagnetic on-off valve 13a that opens and closes the flow path in the water supply pipe 13 in the middle thereof.

  The electromagnetic open / close valve 13a is a two-way valve configured to open and close the flow path based on a signal from the control panel 18. The electromagnetic on-off valve 13a forms a flow path that connects the primary side and the secondary side of the water supply pipe 13 in the closed state, and connects the primary side of the water supply pipe 13 and a drainage destination such as drain in the open state. A flow path to be connected is configured.

  The branch portion 14 is a branch pipe disposed in the middle of the water supply pipe 13. The branch part 14 branches a part of the flow of water from the iron removal manganese removal tank 11 in the water supply pipe 13 to the connection pipe 35.

  The on-off valve 15 is configured to be manually opened and closed. The on-off valve 15 is, for example, a cock.

  The piping 16 is, for example, a flexible tube that fluidly connects the on-off valve 15 and the tank body 32a. One end of the pipe 16 is connected to the on-off valve 15. The other end of the pipe 16 is connected to the tank body 32a by connecting the other end to the tank body 32a, the inlet 32b or the lid 32c.

  The temperature sensor 17 is configured to be able to detect the outside air temperature. The temperature sensor 17 is electrically connected to the control panel 18 via a signal line or the like. The temperature sensor 17 is configured to be able to transmit the detected temperature information to the control panel 18. The temperature sensor 17 only needs to be able to detect the temperature at which water flowing through the iron removal manganese removal tank 11 and the water supply pipe 13 freezes. For example, the temperature sensor 17 may be a water thermometer provided in the water supply pipe 13.

  The control panel 18 has a storage unit 18a. The storage unit 18a includes a temperature T at which freezing occurs, a time t1 for performing a determination to perform a freeze prevention operation, which will be described later, a time t2 for opening and closing the electromagnetic opening and closing valve 13a when performing the freeze prevention operation, and an electromagnetic opening and closing valve 13a. The opening time t3, the number A of opening and closing of the electromagnetic on-off valve 13a that outputs a signal that outputs to the outside that the freeze prevention operation is being performed are stored.

  The control panel 18 switches the electromagnetic on-off valve 13a and the electromagnetic valve provided on the secondary side of the connecting pipe 35. The control panel 18 controls a pump that pumps well water. Further, the control panel 18 has a function of performing an anti-freezing operation based on the temperature information detected by the temperature sensor 17.

  Specifically, as the freeze prevention operation, the control panel 18 compares the temperature T stored in the storage unit 18a with the temperature information detected by the temperature sensor 17, and when the detected temperature falls below the temperature T. Counts the time when the detected temperature falls below the temperature T. When the counted time exceeds the time t1 stored in the storage unit 18a, the control panel 18 opens the electromagnetic on-off valve 13a at time t2 for the time t3.

  While the electromagnetic on-off valve 13a is open, the control panel 18 outputs a signal for driving a pump for pumping well water to drive the pump. Thereby, the well water supplied by the pump passes through the resin cylinder 22 and is drained through the electromagnetic on-off valve 13a.

  Next, the control panel 18 counts the number of times that the electromagnetic on-off valve 13a has been opened and closed, and when the number of times of opening / closing A stored in the storage unit 18a has been exceeded, outputs a signal indicating that the anti-freezing operation has been performed to the outside. . Examples of the output of this signal include light notification, a signal displayed on a tablet, a PC terminal, and the like, a display on a display unit provided separately on the control panel 18, and the like.

  Further, when the flow rate detector 35a continuously detects the flow rate for a predetermined time when the electromagnetic on-off valve 13a is open, the control panel 18 closes the electromagnetic on-off valve 13a and pumps well water. Stop outputting the signal that drives the pump.

  According to the filtration device 1 configured as described above, the branch portion 14 is provided in the middle of the water supply pipe 13 connected to the resin cylinder 22 of the iron removal manganese removal tank 11 and connected to the secondary side of the branch portion 14. The water supply pipe 13 is fluidly connected to the tank 32 through the opened on-off valve 15 and the pipe 16. As a result, after the stock solution of sodium hypochlorite is introduced into the tank main body 32a from the input port 32b, the on-off valve 15 is opened, so that the well water treated in the iron removal manganese removal tank 11 is used as dilution water in the tank main body 32a. It becomes possible to supply to.

  In addition, when the temperature detected by the temperature sensor 17 is equal to or lower than the temperature T at which freezing occurs, the filtration device 1 opens the electromagnetic on-off valve 13a and drives a pump that pumps well water, whereby the resin cylinder 22 It becomes possible to replace the water inside and drain the water inside the resin cylinder 22. Thereby, it can prevent that the water in the iron removal manganese removal tank 11 and the water supply pipe 13 freezes.

  Further, the control panel 18 does not perform the freeze prevention operation until the predetermined time t1 has elapsed even when the outside air temperature or the water temperature is equal to or lower than the freezing temperature. That is, when the temperature detected by the temperature sensor 17 continues for a predetermined time t1 and is equal to or lower than the freezing temperature T, the freeze prevention operation is performed.

  Further, during the freeze prevention operation, the control panel 18 intermittently opens the electromagnetic on-off valve 13a at the interval of time t2 and drives the pump that pumps well water in the same manner, and thus prevents freeze prevention. It is possible to prevent the operation from continuing for a long time. Note that the times t2 and t3 are set to arbitrary times during which the water in the resin tube 22 is not frozen below the freezing temperature, depending on the function, dimensions, and shape of the filtration device 1.

  As described above, the filtration device 1 does not perform the freeze prevention operation when the temperature drops instantaneously, and prevents an increase in operation cost for driving the pump that pumps the well water intermittently during the freeze prevention operation. it can.

  As a result, the filtering device 1 can prevent an increase in operating cost. Moreover, the filtration apparatus 1 can reduce the amount of water passing through the ion exchange resin in the freeze prevention operation, and can suppress the shortening of the regeneration cycle of the ion exchange resin.

  As described above, according to the filtration device 1 according to an embodiment of the present invention, when the temperature detected by the temperature sensor 17 is equal to or lower than the freezing temperature, the electromagnetic on-off valve 13a is opened and closed under a predetermined condition, and By operating a pump that pumps well water, freezing of the iron removal manganese removal tank 11 can be easily prevented.

  In addition, this invention is not limited to the structure of the said embodiment. In the example described above, the on-off valve 15 has been described as having a configuration that uses a cock that is manually opened and closed, but is not limited thereto, and may be an automatic on-off valve that is automatically opened and closed by the control panel 18. Moreover, although the temperature sensor 17 demonstrated the structure which detects external temperature or water temperature in the example mentioned above, it is not limited to this, The temperature of the iron removal manganese removal tank 11, ie, the water in the said tank 11, is below freezing temperature. As long as it is possible to detect or determine whether or not, it may be configured to detect the temperature by another method. With this configuration, the control panel 18 stores a necessary amount of water as dilution water based on the concentration of sodium hypochlorite, and opens and closes the on-off valve 15 based on the stored information. By controlling, it becomes possible to facilitate the operation of adjusting the concentration of sodium hypochlorite. In addition, various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Filtration apparatus, 10 ... Base, 10a ... Mount, 11 ... Iron removal manganese tank, 12 ... Sanitizer, 13 ... Water supply pipe, 14 ... Branch part, 15 ... On-off valve, 16 ... Piping, 17 ... Temperature sensor , 18 ... control panel, 18a ... storage unit, 21 ... salt water tank, 21a ... supply pipe, 22 ... resin cylinder, 23 ... control valve, 24 ... cover, 25 ... support part, 31 ... base, 32 ... tank, 32a ... Tank body, 32b ... inlet, 32c ... lid, 32d ... water level detection memory, 33 ... pipe unit, 34 ... chemical solution injection means, 34a ... pump, 34b ... chemical solution injection unit, 35 ... connecting pipe, 35a ... flow rate detector, 36: Control unit.

Claims (2)

Ion exchange type iron removal manganese removal tank,
A water supply pipe connected to the secondary side of the iron removal manganese removal tank;
An electromagnetic on-off valve that is provided in the middle of the water supply pipe and switches between connection of the primary side and the secondary side of the water supply pipe by opening and closing, and connection of the primary side of the water supply pipe and the drainage destination;
A temperature sensor for detecting the temperature of the iron removal manganese removal tank;
A control panel for controlling the electromagnetic on-off valve to connect the primary side of the water supply pipe and the drainage destination when the temperature detected by the temperature sensor is equal to or lower than a temperature at which water is frozen for a predetermined time. ,
A filtration apparatus comprising:   The control panel controls the electromagnetic on-off valve at a predetermined interval for a predetermined time when the temperature detected by the temperature sensor is continuously equal to or lower than the freezing temperature for a predetermined time. The filtration apparatus according to claim 1, wherein a side and the drainage destination are connected.