Liquid storage device with liquid level detection function

Abstract

The utility model discloses a liquid storage device with liquid level detection, which comprises a liquid storage barrel, a liquid supplementing pipe, a second sensor mounting rack and a lower liquid level sensor, a liquid supplementing joint is arranged on the liquid storage barrel and is connected with the liquid supplementing pipe positioned in the liquid storage barrel, and the lower liquid level sensor is arranged on the liquid supplementing joint. And the lower liquid level sensor is arranged below the liquid outlet of the liquid supplementing pipe through the sensor mounting frame II. The liquid level sensor has the advantages of effectively eliminating bubbles on the sensor, improving the measurement accuracy and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level detection technical field, specifically a kind of liquid storage device with liquid level detection. BACKGROUND

[0002] Among one kind of liquid level detection method in prior art, liquid level is detected by sensor, the signal feedback of sensor immersed in liquid and not immersed in liquid is different, to judge whether liquid is lacking in liquid storage barrel, some liquid contains bubble, such as hypochlorous acid disinfectant made by the common mixing of raw liquid, water and carbon dioxide, gas in liquid is easy to adhere on sensor, form bubble, lead to sensor measurement error or influence the normal work of sensor. SUMMARY

[0003] The utility model discloses a kind of liquid storage devices with liquid level detection, which effectively eliminates bubbles on sensor and improves measurement accuracy.

[0004] The utility model discloses a kind of liquid storage devices with liquid level detection, which effectively eliminates bubbles on sensor and improves measurement accuracy.

[0005] A kind of liquid storage device with liquid level detection, characterized in that: including liquid storage barrel, liquid supplementing pipe, sensor mounting bracket two and lower liquid level sensor, the liquid storage barrel is equipped with liquid supplementing joint, the liquid supplementing joint is connected with the liquid supplementing pipe in liquid storage barrel, the lower liquid level sensor is arranged below the liquid outlet of liquid supplementing pipe by sensor mounting bracket two;

[0006] When bubbles adhere on lower liquid level sensor and affect liquid level detection, the lower liquid level sensor can be flushed by liquid outlet of liquid supplementing pipe to eliminate bubbles.

[0007] The lower liquid level sensor uses photoelectric sensor, and the lens of the lower liquid level sensor is arranged upward below the liquid outlet of liquid supplementing pipe. By arranging the lens of the lower liquid level sensor upward, bubbles on the lens can be easily flushed and cleaned.

[0008] The utility model discloses a liquid storage barrel is also equipped with outer filling joint, and the liquid storage barrel is equipped with liquid pumping pipe, and the outer filling joint is connected with the liquid pumping pipe.

[0009] The utility model discloses a sensor mounting bracket two includes pipe connecting plate and connecting frame, is set up the liquid supplementing pipe perforation of the upper and lower through on the pipe connecting plate, the connecting frame is fixed in the pipe connecting plate lower extreme, the lower extreme of liquid supplementing pipe is inserted tightly in the liquid supplementing pipe perforation, the lower liquid level sensor is installed on the connecting frame, and the lens of lower liquid level sensor is located the lower side of liquid supplementing pipe perforation, can realize the fixation of lower liquid level sensor position, and when the bubble adheres on the lens of lower liquid level sensor, can flush lower liquid level sensor through the liquid outlet of liquid supplementing pipe, eliminate the bubble, and the simple structure is convenient for installation and removal.

[0010] The utility model discloses still set up the liquid pumping pipe perforation of the upper and lower through on the pipe connecting plate, and the liquid pumping pipe is inserted tightly in the liquid pumping pipe perforation, or still be equipped with the U-shaped clamping groove of the opening of the liquid pumping pipe on the pipe connecting plate, and the liquid pumping pipe is clamped in the U-shaped clamping groove, simple structure further guarantees the stability of lower liquid level sensor installation.

[0011] The utility model discloses the upper liquid level sensor is equipped with on the lower liquid level sensor, and the upper liquid level sensor is equipped in the liquid storage bucket through sensor mounting bracket one.

[0012] The utility model discloses a sensor mounting bracket one includes side plate and upper fixed plate, and the upper end of side plate is fixedly connected with upper fixed plate, and the upper liquid level sensor is installed on the side plate, realizes the fixation of upper liquid level sensor position.

[0013] The utility model discloses still be equipped with pipe limiting board no. one on the side plate, and the U-shaped clamping groove of the opening of one of liquid supplementing pipe and liquid pumping pipe is set up on pipe limiting board no. one, and one of liquid supplementing pipe and liquid pumping pipe is clamped in the U-shaped clamping groove,

[0014] Still be equipped with pipe limiting board no. three on the side plate, and the U-shaped clamping groove of the opening of the other of liquid supplementing pipe and liquid pumping pipe is set up on pipe limiting board no. three, and the other of liquid supplementing pipe and liquid pumping pipe is clamped in the U-shaped clamping groove, and sensor mounting bracket one is fixed with liquid storage bucket, and also is connected with liquid supplementing pipe and liquid pumping pipe, guarantees the stability of whole, and simple structure is convenient for installation and removal.

[0015] The utility model discloses the upper liquid level sensor is equipped with limit sensor on, and the limit sensor is installed on the side plate, and the limit sensor is set up on the upper liquid level sensor, can effectively prevent the problem of liquid overflow caused by the failure of upper liquid level sensor.

[0016] The utility model discloses the limit sensor includes limit sensor no. one and limit sensor no. two, and limit sensor no. one and limit sensor no. two are set up in the interval, and set up two limit sensors, further prevent the misjudgment caused by sensor failure, guarantee to satisfy the liquid supplementing requirement.

[0017] The utility model discloses beneficial effect is: the lower liquid level sensor is set below the liquid outlet of liquid supplementing pipe, when the bubble is attached on the lower liquid level sensor, can flush the lower liquid level sensor through the liquid outlet of liquid supplementing pipe, and eliminate the bubble when the bubble is attached on the lens of lower liquid level sensor and influence liquid level detection, flush the lower liquid level sensor through the liquid outlet of liquid supplementing pipe, and eliminate the bubble, simple structure, convenient to install and dismount. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model filling machine.

[0019] Figure 2 It is another angle structure schematic diagram of the utility model filling machine.

[0020] Figure 3 It is the hidden barrel body schematic diagram of the utility model filling machine.

[0021] Figure 4 It is the hidden barrel body schematic diagram of the utility model filling machine.

[0022] Figure 5 It is Figure 4 Another angle structure schematic diagram.

[0023] Figure 6 It is Figure 4 Side view.

[0024] Figure 7 It is the cooperation structure schematic diagram of each sensor and sensor mounting frame one, sensor mounting frame two.

[0025] Figure 8 It is sensor mounting frame two structure schematic diagram.

[0026] Figure 9 It is sensor mounting frame one structure schematic diagram.

[0027] Figure legend: liquid storage barrel body-1;

[0028] Barrel cover-2, seat groove one-201, seat groove two-202;

[0029] Upper liquid outlet shell-3, upper liquid outlet nozzle one-301, upper liquid outlet nozzle two-302;

[0030] Support shell-4, liquid extraction hole one-401, liquid extraction hole two-402;

[0031] Liquid supplementing connector-501, outer filling connector-502;

[0032] liquid supplement pipe-6;

[0033] liquid pumping pipe-7;

[0034] limit sensor one-801, limit sensor two-802, upper liquid level sensor-803, lower liquid level sensor-804, lens-8041;

[0035] sensor mounting rack one-9, upper fixing plate-901, pipe perforation-9011, side plate-902, limit sensor one mounting plate-903, limit sensor two mounting plate-904, upper liquid level sensor mounting plate-905, pipe limiting plate one-906, U-shaped clamping groove one-9061, pipe limiting plate two-907, U-shaped clamping groove two-9071, pipe limiting plate three-908, U-shaped clamping groove three-9081;

[0036] sensor mounting rack two-10, pipe connecting plate-1001, liquid supplement pipe perforation-10011, liquid pumping pipe perforation-10012, connecting rack-1002, sensor mounting hole-10021. DETAILED DESCRIPTION

[0037] The utility model will be explained below in combination with the drawings and examples.

[0038] A liquid storage device with liquid level detection, comprising a liquid storage barrel, a liquid supplement pipe 6, a liquid pumping pipe 7, a sensor mounting rack two 10 and a lower liquid level sensor 804, wherein the liquid storage barrel is provided with a liquid supplement joint 501 and an outer filling joint 502, the liquid supplement joint 501 is connected with the liquid supplement pipe 6 in the liquid storage barrel, the outer filling joint 502 is connected with the liquid pumping pipe 7, and the lower liquid level sensor 804 is arranged below the liquid outlet of the liquid supplement pipe 6 through the sensor mounting rack two 10.

[0039] When the lower liquid level sensor 804 is attached with air bubbles and affects liquid level detection, the lower liquid level sensor 804 can be flushed by liquid outlet of the liquid supplement pipe 6 to eliminate air bubbles.

[0040] In this example, the length of the liquid pumping pipe 7 is greater than that of the liquid supplement pipe 6, liquid is supplemented into the liquid storage barrel through the liquid supplement pipe 6, and liquid in the liquid storage barrel is pumped out through the liquid pumping pipe 7.

[0041] The lower liquid level sensor 804 adopts a photoelectric sensor, and the lens 8041 of the lower liquid level sensor 804 is arranged upward below the liquid outlet of the liquid supplement pipe 6; the lens 8041 of the lower liquid level sensor 804 is arranged upward, which facilitates flushing of air bubbles on the lens 8041.

[0042] As Figures 4-9As shown, the second sensor mounting frame 10 is arranged at the lower end of the liquid supplementing pipe 6, and the sensor position is fixed by the second sensor mounting frame 10, which comprises a pipe connecting plate 1001 and a connecting frame 1002, the pipe connecting plate 1001 is provided with a liquid supplementing pipe through hole 10011 arranged in a penetrating manner from top to bottom, the connecting frame 1002 is fixed at the lower end of the pipe connecting plate 1001, the lower end of the liquid supplementing pipe 6 is inserted into the liquid supplementing pipe through hole 10011, the lower liquid level sensor 804 is arranged on the connecting frame 1002, and the lens 8041 of the lower liquid level sensor 804 is located below the liquid supplementing pipe through hole 10011; the position of the lower liquid level sensor 804 can be fixed, and when the lens of the lower liquid level sensor 804 is attached with bubbles and affects the liquid level detection, the lower liquid level sensor 804 can be flushed by the liquid in the liquid supplementing pipe 6 to eliminate the bubbles, and the structure is simple and convenient to install and disassemble.

[0043] The pipe connecting plate 1001 is also provided with a liquid pumping pipe through hole 10012 arranged in a penetrating manner from top to bottom, and the liquid pumping pipe 7 is inserted into the liquid pumping pipe through hole 10012; a U-shaped clamping groove with an opening facing the liquid pumping pipe can also be arranged on the pipe connecting plate 1001, and the liquid pumping pipe is clamped in the U-shaped clamping groove; the structure is simple, and the stability of the lower liquid level sensor installation is further ensured.

[0044] In this embodiment, the connecting frame 1002 adopts a U-shaped frame or a triangular frame with an opening at the upper end, and the connecting frame comprises a bottom plate, a left side plate and a right side plate, the left end of the bottom plate is fixedly connected with the lower end of the left side plate, the right end is fixedly connected with the lower end of the right side plate, the upper ends of the left side plate and the right side plate are fixedly connected with the lower end of the pipe connecting plate 1001, and a sensor mounting hole is arranged on the bottom plate, and the lower liquid level sensor 804 is arranged in the sensor mounting hole.

[0045] An upper liquid level sensor 803 is arranged above the lower liquid level sensor 804, and the upper liquid level sensor 803 is arranged in the liquid storage barrel through a first sensor mounting frame 9.

[0046] The first sensor mounting frame 9 comprises a side plate 902 and an upper fixed plate 901, the upper end of the side plate 902 is fixedly connected with the upper fixed plate 901, the upper fixed plate 901 is fixedly connected with the supporting shell 4, the upper fixed plate 901 and the side plate 902 form a whole shape of inverted L-shaped integral molding or welding, and the upper liquid level sensor is arranged on the side plate 902; the position of the upper liquid level sensor 803 is fixed.

[0047] The front side wall of the side plate 902 is further fixed with a pipe limiting plate one 906 and a pipe limiting plate two 907 arranged in an up-down manner, in this embodiment, the pipe limiting plate one 906 is provided with a U-shaped clamping groove one 9061 with an opening facing the liquid suction pipe, and the pipe limiting plate two 907 is provided with a U-shaped clamping groove two 9071 with an opening facing the liquid suction pipe, and the liquid suction pipe 7 is clamped in the U-shaped clamping groove one 9061 and the U-shaped clamping groove two 9071.

[0048] The rear side wall of the side plate 902 is fixed with a pipe limiting plate three 908, the pipe limiting plate three 908 is provided with a U-shaped clamping groove three 9081 with an opening facing the liquid supplement pipe, and the liquid supplement pipe is clamped in the U-shaped clamping groove three 9081; the sensor mounting bracket one is fixed with the supporting shell 4 and is clamped with the liquid supplement pipe and the liquid suction pipe, which ensures the stability of the whole, is simple in structure, and is convenient to install and disassemble.

[0049] The liquid supplement pipe can also be clamped in the U-shaped clamping groove one and the U-shaped clamping groove two, and the liquid suction pipe can be clamped in the U-shaped clamping groove three according to needs.

[0050] The upper liquid level sensor 803 is provided with a limit sensor, and the limit sensor is mounted on the side plate 902; the limit sensor is arranged above the upper liquid level sensor 803, which can effectively prevent the problem of continuous liquid supplement and liquid overflow caused by failure of the upper liquid level sensor 803.

[0051] The limit sensor includes a limit sensor one 801 and a limit sensor two 802, and the limit sensor one 801 and the limit sensor two 802 are arranged in an up-down manner; two limit sensors are arranged to further prevent misjudgment caused by sensor failure and to ensure that the liquid supplement requirement can be met.

[0052] The limit sensor one 801, the limit sensor two 802 and the upper liquid level sensor 803 are mounted on the side plate 902; the positions of the limit sensor and the upper liquid level sensor are fixed.

[0053] In this embodiment, the limit sensor one 801, the limit sensor two 802, the upper liquid level sensor 803 and the lower liquid level sensor 804 all adopt photoelectric sensors and are respectively connected with the controller.

[0054] In this embodiment, the photoelectric sensor for detecting the liquid level is a prior art, and the working principle is that the sensor internally includes an infrared emitting diode and a photosensitive receiver, the light emitted by the emitting diode is introduced into the lens at the top of the sensor, when the lens is immersed in the liquid, the light is refracted into the liquid, so that the receiver cannot receive or can only receive a small amount of light, if there is no liquid, the light emitted by the emitting diode is directly reflected from the lens to the receiver, the photoelectric sensor realizes alarm and reminder through sensing the working condition change, and the specific structure will not be described in detail here.

[0055] The limit sensor one installation plate 903, the limit sensor two installation plate 904, the upper liquid level sensor installation plate 905, the pipe limiting plate one 906, the pipe limiting plate two 907 and the pipe limiting plate three 908 are welded to the side plate in this embodiment.

[0056] The limit sensor one installation plate 903, the limit sensor two installation plate 904, the upper liquid level sensor installation plate 905, the pipe limiting plate one 906, the pipe limiting plate two 907 and the pipe limiting plate three 908 are welded to the side plate in this embodiment.

[0057] The limit sensor one 801 is fixed to the limit sensor one installation plate 903 by screwing, the limit sensor two 802 is fixed to the limit sensor two installation plate 904 by screwing, the upper liquid level sensor 803 is fixed to the upper liquid level sensor installation plate 905 by screwing, and the lower liquid level sensor 804 is fixed to the connecting frame 1002 by screwing.

[0058] In this embodiment, the filling machine fills and disinfects liquid as an example, and the disinfectant is placed in the liquid storage barrel. The disinfectant is replenished and pumped. It is not limited to this. The filling machine can fill all liquids. As shown in the attached Figures 1-3 The filling machine includes a liquid storage barrel, a pumping and filling mechanism, and a liquid outlet nozzle. The liquid storage barrel includes a liquid storage barrel body 1 and a barrel cover 2. The barrel cover 2 covers the liquid storage barrel body 1. The barrel cover 2 is provided with a seat groove for placing a filling barrel. The seat groove includes a seat groove one 201 and a seat groove two 202. The seat groove one 201 and the seat groove two 202 can both place a filling barrel. The upper end of the barrel cover 2 is fixed with an upper liquid outlet shell 3. The upper liquid outlet shell 3 is provided with an upper liquid outlet nozzle one 301 and an upper liquid outlet nozzle two 302. The upper liquid outlet nozzle one 301 is located directly above the seat groove one 201, and the upper liquid outlet nozzle two 302 is located directly above the seat groove two 202. The number of filling barrels placed on the barrel cover 2 and the number of cooperating liquid outlet nozzles are installed according to actual use needs. The barrel cover 2 can not only seal the liquid storage barrel body 1, but also can be used to place the filling barrel, which is convenient for filling.

[0059] The embodiment is provided with a groove structure support shell 4 below the bucket cover 2 in the liquid storage barrel body 1, the upper end of the support shell 4 is fixedly connected with the bucket cover 2, the liquid supplement connector 501 and the outer filling connector 502 are located on the upper end of the liquid storage barrel body 1 and pass through the side wall of the support shell 4, the support shell 4 is provided with a liquid supplement pipe through hole and a liquid pumping pipe through hole, one end of the liquid supplement pipe 6 is communicated with the liquid supplement connector 501, the other end of the liquid supplement pipe 6 extends into the liquid storage barrel body 1 through the liquid supplement pipe through hole, one end of the liquid pumping pipe 7 is communicated with the outer filling connector 502, the other end of the liquid pumping pipe 7 extends into the liquid storage barrel body 1 through the liquid pumping pipe through hole, the sensor mounting bracket one 9 is arranged at the lower end of the support shell 4, the upper fixed plate 901 is transversely arranged and fixedly connected with the bottom of the support shell 4, the upper fixed plate 901 is bolted with the support shell 4 in the embodiment, the upper fixed plate 901 is provided with a pipe through hole 9011, the liquid supplement pipe 6 extends into the liquid storage barrel body 1 after sequentially passing through the liquid supplement pipe through hole on the support shell 4, the pipe through hole 9011 on the upper fixed plate 901 and being clamped by the U-shaped clamping groove three 9081 of the pipe limiting plate three 908, the liquid pumping pipe 7 is clamped by the U-shaped clamping groove one 9061 of the pipe limiting plate one 906 and the U-shaped clamping groove two 9071 of the pipe limiting plate two 907.

[0060] The suction and filling mechanism (not shown in the figure) is arranged on the support shell in the embodiment, the suction and filling mechanism comprises a water pump one, a water pump two, a liquid pumping pipe one and a liquid pumping pipe two, the water pump one is fixed on the left side of the support shell 4, the water pump two is fixed on the right side of the support shell 4, the water pump one and the water pump two are respectively connected with the controller, the support shell 4 is provided with a liquid pumping hole one 401 on the left side and a liquid pumping hole two 402 on the right side, the bucket cover 2 is provided with an upper liquid outlet hole one on the left side and an upper liquid outlet hole two on the right side, one end of the liquid pumping pipe one is inserted into the disinfectant in the liquid storage barrel body 1, the other end of the liquid pumping pipe one extends out of the liquid pumping hole one 401 on the left side of the support shell 4 and is communicated with the liquid inlet of the water pump one, one end of the upper liquid outlet pipe one is communicated with the liquid outlet of the water pump one, the other end of the upper liquid outlet pipe one extends out of the upper liquid outlet hole one on the bucket cover 2 and extends into the left side of the upper liquid outlet shell 3 and is communicated with the upper liquid outlet nozzle one 301;

[0061] one end of the liquid pumping pipe two is inserted into the disinfectant in the liquid storage barrel body 1, the other end of the liquid pumping pipe two extends out of the liquid pumping hole two 402 on the right side of the support shell 4 and is communicated with the liquid inlet of the water pump two, one end of the upper liquid outlet pipe two is communicated with the liquid outlet of the water pump two, the other end of the upper liquid outlet pipe two extends out of the upper liquid outlet hole two on the bucket cover 2 and extends into the right side of the upper liquid outlet shell 3 and is communicated with the upper liquid outlet nozzle two 302, so that the filling barrel is placed on the seat groove for filling.

[0062] The upper liquid outlet pipe one, the upper liquid outlet pipe two, the liquid pumping pipe one and the liquid pumping pipe two are not shown in the figure in the embodiment.

[0063] The liquid storage barrel body 1 is communicated with the disinfectant generator (not shown in the figure) through the liquid supplement connector 501 in the embodiment, the disinfectant generator prepares the disinfectant and flows into the liquid storage barrel body 1 through the liquid supplement connector 501 and the liquid supplement pipe 6 for storage, so that the use is convenient.

[0064] The disinfectant generator prepares the hypochlorous acid disinfectant by mixing raw materials, which is the prior art and will not be described in detail.

[0065] In this embodiment, the outer filling connector 502 is provided with a water pump (not shown in the figure) for pumping the disinfectant in the liquid storage barrel 1 through the liquid pumping pipe 7.

[0066] The personal user generally uses the upper liquid outlet nozzle one 301 and the upper liquid outlet nozzle two 302 for filling due to the small amount of disinfectant used at a time, and the merchant user generally uses the outer filling connector 502 for filling due to the large amount of disinfectant used at a time.

[0067] In this embodiment, the controller can be a controller developed based on MCU or a PLC controller, and the controller is fixed on the supporting shell.

[0068] When the utility model is used:

[0069] 1. The disinfectant generator is started, the hypochlorous acid disinfectant is prepared and stored in the liquid storage barrel 1 through the liquid supplementing pipe 6, the liquid level detection device detects the liquid level and feeds back the signal to the controller, when the lenses of the lower liquid level sensor 804 and the upper liquid level sensor 803 are immersed in the liquid, it indicates that the liquid level has reached the set requirement, and the controller controls the disinfectant generator to stop working according to the signal change feedback by the lower liquid level sensor and the upper liquid level sensor.

[0070] 2. The personal user fills the disinfectant, when the user places the filling barrel on the seat groove one 201, the controller controls the water pump one to start, the hypochlorous acid disinfectant is filled into the filling barrel from the upper liquid outlet nozzle one 301 through the liquid pumping pipe one and the upper liquid outlet pipe one, when the user places the filling barrel on the seat groove two 202, the operation is the same as above.

[0071] 3. When the merchant user needs to fill the disinfectant in large quantities, the filling is carried out through the outer filling connector 502, the controller controls the water pump connected with the outer filling connector 502 to work, and the disinfectant is pumped out through the liquid pumping pipe 7 and into the filling barrel.

[0072] 4. During the filling process described above, if the liquid level drops below the position of the lower liquid level sensor 804, it indicates that there is a shortage of liquid in the storage tank 1. The controller controls the disinfectant generator to operate based on the change signal fed back by the lower liquid level sensor 804, replenishing the storage tank 1 through the replenishment pipe 6. If the lens of the second limit sensor 802 is immersed in the liquid during the replenishment process, the second limit sensor 802 will feed back the change signal to the controller, and the controller will control the disinfectant generator to stop operating and stop replenishing the storage tank. This also indicates that the upper liquid level sensor 803 has failed. The second limit sensor 802 can effectively prevent the problem of liquid overflowing the storage tank 1 due to the failure of the upper liquid level sensor 803. If the lens of the first limit sensor 801 is immersed in the liquid during the replenishment process, the first limit sensor 801 will feed back the signal to the controller, and the controller will control the disinfectant generator to stop operating and stop replenishing the storage tank. When the disinfectant generator stops working and stops replenishing the liquid into the storage tank 1, it also indicates that the upper liquid level sensor 803 and limit sensor 2 802 have failed. Limit sensor 1 801 can further prevent the problem of liquid overflowing from the storage tank 1 due to the failure of the upper liquid level sensor 803 and limit sensor 2 802. When there are air bubbles on the lens 8041 of the lower liquid level sensor 804, the lower liquid level sensor 804 will report a no-water signal. If the upper liquid level sensor 803, limit sensor 2 802, and limit sensor 1 801 also report a no-water signal at this time, the controller controls the replenishment of liquid. The disinfectant sprays out from the outlet of the replenishment pipe 6 to rinse the lens 8041 of the lower liquid level sensor 804. After rinsing, if both the lower liquid level sensor 804 and the upper liquid level sensor 803 report a water signal, the controller controls the stop of replenishment.

Claims

1. A liquid storage device with liquid level detection, characterized by: Including liquid storage barrel, liquid supplement pipe, sensor mounting bracket two and lower liquid level sensor, the liquid storage barrel is equipped with liquid supplement joint, the liquid supplement joint is connected with the liquid supplement pipe in the liquid storage barrel, the lower liquid level sensor is arranged below the liquid outlet of the liquid supplement pipe through the sensor mounting bracket two.

2. The liquid storage device with liquid level detection of claim 1, wherein: The lower liquid level sensor adopts a photoelectric sensor, and the lens of the lower liquid level sensor is arranged upward below the liquid outlet of the liquid supplement pipe.

3. The liquid storage device with liquid level detection of claim 2, wherein: The liquid storage barrel is also provided with an outer filling joint, and the liquid storage barrel is provided with a liquid pumping pipe.

4. The liquid storage device with liquid level detection of claim 3, wherein: The sensor mounting bracket two includes a pipe connecting plate and a connecting frame, the pipe connecting plate is provided with a liquid supplement pipe through hole penetrating upward and downward, the connecting frame is fixed to the lower end of the pipe connecting plate, the lower end of the liquid supplement pipe is tightly inserted into the liquid supplement pipe through hole, the lower liquid level sensor is installed on the connecting frame, and the lens of the lower liquid level sensor is located below the liquid supplement pipe through hole.

5. The liquid storage device with liquid level detection of claim 4, wherein: The pipe connecting plate is also provided with a liquid pumping pipe through hole penetrating upward and downward, and the liquid pumping pipe is tightly inserted into the liquid pumping pipe through hole.

6. The liquid storage device with liquid level detection according to claim 3 or 4 or 5, characterized in that: The lower liquid level sensor is provided with an upper liquid level sensor above it, and the upper liquid level sensor is arranged in the liquid storage barrel through a sensor mounting bracket one.

7. The liquid storage device with liquid level detection of claim 6, wherein: The sensor mounting bracket one includes a side plate and an upper fixed plate, the upper end of the side plate is fixedly connected with the upper fixed plate, and the upper liquid level sensor is installed on the side plate.

8. The liquid storage device with liquid level detection of claim 7, wherein: The side plate is also fixed with a pipe limiting plate one, the pipe limiting plate one is provided with a U-shaped clamping groove with an opening facing one of the liquid supplement pipe and the liquid pumping pipe, and one of the liquid supplement pipe and the liquid pumping pipe is clamped in the U-shaped clamping groove. The side plate is also fixed with a pipe limiting plate three, the pipe limiting plate three is provided with a U-shaped clamping groove with an opening facing the other one of the liquid supplement pipe and the liquid pumping pipe, and the other one of the liquid supplement pipe and the liquid pumping pipe is clamped in the U-shaped clamping groove.

9. The liquid storage device with liquid level detection according to claim 7 or 8, characterized in that: The upper liquid level sensor is provided with a limit sensor above it, and the limit sensor is installed on the side plate.

10. The liquid storage device with liquid level detection of claim 9, wherein: The limit sensor includes a limit sensor one and a limit sensor two, and the limit sensor one and the limit sensor two are arranged in an upward and downward interval.

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