CN213209196U

CN213209196U - Water softener low salt alarm device

Info

Publication number: CN213209196U
Application number: CN202022224974.1U
Authority: CN
Inventors: 薛永; 刘成卫
Original assignee: Nanjing Fobrite Environmental Technology Co Ltd
Current assignee: Nanjing Fobrite Environmental Technology Co Ltd
Priority date: 2020-10-09
Filing date: 2020-10-09
Publication date: 2021-05-14
Anticipated expiration: 2030-10-09

Abstract

The utility model discloses a water softener low salt alarm device, including laser sensor, laser sensor passes through the sensor mount and installs at salt roof portion, and laser sensor includes the casing, sets up at the inside PCB board of casing, sets up the optical lens piece at the casing lower extreme, set up detection circuitry on the PCB board, detection circuitry includes power VCC, reference voltage VREF, signal input part VIN, signal output part VOUT, resistance R1, resistance two R2, resistance three R3, resistance four R4, resistance five R5, adjustable resistance RW, first emitting diode VD1, second emitting diode VD2, first phototriode VT1, second phototriode VT2, condenser C. The utility model provides a present low salt detect with laser sensor can only the distance detect, the problem of unable real time monitoring salt position.

Description

Water softener low salt alarm device

Technical Field

The utility model relates to a softened water equipment, especially a water softener low salt alarm device.

Background

When the softened water equipment is used, special salt needs to be added periodically to update the resin, the resin needs saline water every time of regeneration, the water for dissolving the salt is injected quantitatively by the softened water equipment, and meanwhile, the salt box is ensured to be always filled with enough salt.

In the prior art, the salt level detection mode of the salt tank in the water softener is as follows: with low salt detection with laser sensor through sensor mount settle in inside the salt case, its shortcoming is: the salt level detection device can only detect at fixed distance, and when the salt level of the salt box is lower than the mark level, an alarm signal is triggered, but the salt level cannot be monitored in real time.

In addition, because of the shape limitation of the internal circuit board, the existing low-salt detection laser sensor is slender, the lens part at the lower end of the sensor extends into the salt box for a deeper distance, and the optical lens is easily polluted by salt water and needs to be cleaned frequently.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a novel water softener low salt warning device, solve present low salt and detect with laser sensor only can the distance, the problem of unable real time monitoring salt position.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a water softener low-salt alarm device comprises a laser sensor, wherein the laser sensor is installed at the top of a salt box through a sensor fixing frame and comprises a shell, a PCB arranged in the shell and an optical lens arranged at the lower end of the shell, the PCB is provided with a detection circuit, and the detection circuit comprises a power supply VCC, a reference voltage VREF, a signal input end VIN, a signal output end VOUT, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, an adjustable resistor RW, a first light emitting diode VD1, a second light emitting diode VD2, a first photoelectric triode VT1, a second photoelectric triode VT2 and a capacitor C;

the power source VCC is respectively connected with a first resistor R1, a second resistor R2 and a collector electrode of a first phototriode VT1, a first resistor R1 is connected with the positive electrode of a first light emitting diode VD1, bases of a second resistor R2 and the first phototriode VT1 are respectively connected with a third resistor R3, an emitter electrode of the first phototriode VT1 is connected with the positive electrode of a second light emitting diode VD2 through a fourth resistor R4, a negative electrode of the first light emitting diode VD1, a negative electrode of the third resistor R3 and a negative electrode of the second light emitting diode VD2 are respectively connected with a signal input end VIN and a ground terminal GND, an input end of an adjustable resistor RW is connected with a reference voltage VREF, an output end of the adjustable resistor is respectively connected with a collector electrode of the second phototriode VT2 and a fifth resistor R5, a fifth resistor R5 is respectively connected with a signal output end VO.

Further, casing upper portion is equipped with the notch, goes up the notch and extends to the casing up end, and the casing lower part is equipped with down the notch, and lower notch extends to terminal surface under the casing, the PCB board is the platykurtic and the level is fixed at notch middle part down, optical lens is fixed in notch lower extreme down, goes up the interior pencil that penetrates of notch, pencil and PCB board electric connection.

Furthermore, an annular bulge is arranged on the outer side of the upper notch and is arranged in an annular positioning groove of an inner hole of the sensor fixing frame.

Furthermore, a plug is arranged on the inner side of the upper notch and used for fastening a wire harness.

Further, the wire harness and the upper notch are sealed through a wire harness sealing ring.

Further, the optical lens and the lower notch are sealed through a lens sealing ring.

Has the advantages that:

(1) the utility model provides a present low salt detect with laser sensor can only the distance detect, the problem of unable real time monitoring salt position can detect salt face height data in real time, judge whether report to the police.

(2) By adopting the improved PCB, the length of the laser sensor can be shortened, and the lens is prevented from being polluted by saline.

Drawings

Fig. 1 is a schematic structural view of a conventional laser sensor for low-salt detection.

Fig. 2 is a schematic structural diagram of the water softener low-salt alarm device of the utility model.

Fig. 3 is an external view of the laser sensor.

Fig. 4 is a schematic cross-sectional view of a laser sensor.

Fig. 5 is a detection circuit diagram of the laser sensor.

Fig. 6 is a detection schematic diagram of the laser sensor.

In the figure: 1-a sensor mount; 1-1-annular positioning groove; 2-a laser sensor; 2-1-harness; 2-2-plug; 2-3-wire harness sealing ring; 2-4-shell; 2-5-PCB board; 2-6-lens sealing ring; 2-7-an optical lens; 2-8-upper notch; 2-9-lower notch; 2-10-annular bulge, 3-salt box; 4-saline.

The specific implementation mode is as follows:

the present invention will be further explained with reference to the accompanying drawings.

As shown in figures 2 and 4, the utility model discloses a water softener low salt alarm device, including laser sensor 2, laser sensor 2 installs at salt case 3 top through sensor mount 1, and laser sensor 2 includes casing 2-4, sets up PCB board 2-5 inside casing 2-4, sets up optical glass 2-7 at casing 2-4 lower extreme. The optical lenses 2-7 are at a distance from the surface of the saline 4. And the PCB 2-5 is provided with a detection circuit.

As shown in fig. 5 and 6, the detection circuit includes a power source VCC, a reference voltage VREF, a signal input terminal VIN, a signal output terminal VOUT, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, an adjustable resistor RW, a first light emitting diode VD1, a second light emitting diode VD2, a first photo-transistor VT1, a second photo-transistor VT2, and a capacitor C; the power source VCC is respectively connected with a first resistor R1, a second resistor R2 and a collector electrode of a first phototriode VT1, a first resistor R1 is connected with the positive electrode of a first light emitting diode VD1, bases of a second resistor R2 and the first phototriode VT1 are respectively connected with a third resistor R3, an emitter electrode of the first phototriode VT1 is connected with the positive electrode of a second light emitting diode VD2 through a fourth resistor R4, a negative electrode of the first light emitting diode VD1, a negative electrode of the third resistor R3 and a negative electrode of the second light emitting diode VD2 are respectively connected with a signal input end VIN and a ground terminal GND, an input end of an adjustable resistor RW is connected with a reference voltage VREF, an output end of the adjustable resistor is respectively connected with a collector electrode of the second phototriode VT2 and a fifth resistor R5, a fifth resistor R5 is respectively connected with a signal output end VO.

After the detection circuit is electrified, VREF is reference voltage, VIN is a control signal for controlling the operation of the laser emitter, VIN is low level, the second light-emitting diode VD2 emits laser pulses to the surface of the saline water 4 and then reflects the laser pulses to the second phototriode VT2, and the second phototriode VT2 converts optical signals into electric signals and outputs the electric signals through the signal output end VOUT. The higher the salt level, the stronger the reflected light and the lower the VOUT voltage, whereas the lower the salt level, the weaker the reflected light and the higher the VOUT voltage.

Before actual work, the detection circuit is used for testing in advance, the salt surface heights corresponding to different voltage signals are stored in a computer in advance, and then actual testing is carried out.

In the actual test process, VD1 lights up after the sensor is powered on, and the function of work indication is achieved. When VIN is 0V, the transistor VT1 is turned on, and power is supplied to VD2 through the resistor R4, and the VD2 emits an infrared-like laser beam. The light beam is reflected by the salt surface and enters VT2, and the intensity of the light beam determines the magnitude of the voltage drop of VT2 conduction. The level of the salt level was detected by measuring the conduction pressure drop of VT 2. And the conduction voltage drop of the VT2 is subjected to AD conversion, enters the CPU for operation to obtain the height of the salt surface, and judges whether to give an alarm or not.

As shown in fig. 2-4, an upper notch 2-8 is formed in the upper portion of the housing 2-4, the upper notch 2-8 extends to the upper end face of the housing 2-4, a lower notch 2-9 is formed in the lower portion of the housing 2-4, the lower notch 2-9 extends to the lower end face of the housing 2-4, the PCB 2-5 is flat and horizontally fixed in the middle of the lower notch 2-9, the optical lens 2-7 is fixed to the lower end of the lower notch 2-9, a wiring harness 2-1 penetrates through the upper notch 2-8, and the wiring harness 2-1 is electrically connected with the PCB 2-5. By adopting the structure of the PCB 2-5 which is flat and horizontally arranged, the length size of the shell 2-4 of the laser sensor 2 can be shortened, the distance between the optical lens 2-7 and the surface of the saline 4 is further increased, and the optical lens 2-7 at the lower end is prevented from being polluted by the saline.

The outer side of the upper notch 2-8 is provided with an annular bulge 2-10, the annular bulge 2-10 and the shell 2-4 are integrally formed, and the annular bulge 2-10 is arranged in an annular positioning groove 1-1 of an inner hole of the sensor fixing frame 1. The shell 2-4 is supported and positioned by the annular bulge 2-10 and the annular positioning groove 1-1. And a plug 2-2 is arranged on the side 2-8 in the upper notch and used for fastening the wiring harness 2-1 to prevent the wiring harness from loosening and falling off.

In order to ensure the sealing performance of the shell 2-4 of the laser sensor 2, the wire harness 2-1 and the upper notch 2-8 are sealed through a wire harness sealing ring 2-3. The optical lenses 2-7 and the lower notches 2-9 are sealed through lens sealing rings 2-6.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a water softener low salt alarm device, includes laser sensor, laser sensor passes through the sensor mount and installs at salt roof portion, and laser sensor includes the casing, sets up at the inside PCB board of casing, sets up the optical lens piece at the casing lower extreme, set up detection circuitry, its characterized in that on the PCB board: the detection circuit comprises a power supply VCC, a reference voltage VREF, a signal input end VIN, a signal output end VOUT, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, an adjustable resistor RW, a first light-emitting diode VD1, a second light-emitting diode VD2, a first phototriode VT1, a second phototriode VT2 and a capacitor C;

2. The water softener low salt alarm device of claim 1, wherein: casing upper portion is equipped with the notch, goes up the notch and extends to the casing up end, and the casing lower part is equipped with down the notch, and lower notch extends to terminal surface under the casing, the PCB board is the platykurtic and the level is fixed at notch middle part down, optical lens is fixed in lower notch lower extreme, goes up the interior pencil that penetrates of notch, pencil and PCB board electric connection.

3. The water softener low salt alarm device of claim 2, wherein: an annular bulge is arranged on the outer side of the upper notch and is arranged in an annular positioning groove of an inner hole of the sensor fixing frame.

4. The water softener low salt alarm device of claim 3, wherein: and a plug is arranged on the inner side of the upper notch and used for fastening the wiring harness.

5. The water softener low salt alarm device of claim 4, wherein: the wire harness and the upper notch are sealed through a wire harness sealing ring.

6. The water softener low salt alarm device of claim 5, wherein: the optical lens and the lower notch are sealed through a lens sealing ring.