Automatic hand sanitizer feeding device

Abstract

The utility model discloses an automatic hand sanitizer feeding device, which relates to the technical field of hand sanitizer feeding, and comprises a liquid storage tank and a hand washing bottle, the left part of the outer side surface of the liquid storage tank is provided with a PLC (Programmable Logic Controller), the inner side surface of the lower part of the right wall of the liquid storage tank is provided with a feeding pump, and the inside of the hand washing bottle is provided with a liquid level sensor; the liquid storage tank and the hand washing bottle are connected through a first liquid conveying pipe and a second liquid conveying pipe which slide relatively. By arranging the PLC, the feeding pump and the liquid level sensor, automatic feeding of the hand washing bottles can be achieved, manual liquid level checking is not needed, the problem of supply interruption caused by untimely liquid supplementing is avoided, the first liquid conveying pipe and the second liquid conveying pipe can slide relatively by arranging the first liquid conveying pipe and the second liquid conveying pipe, and the liquid conveying efficiency is improved. After the hand sanitizer conveying pipeline is blocked, the conveying pipeline is easy to replace.

Description

Technical Field

[0001] This utility model relates to the field of hand sanitizer dispensing technology, specifically to an automatic hand sanitizer dispensing device. Background Technology

[0002] Hand sanitizer is a skin-care cleansing liquid used to clean hands. It removes dirt and bacteria from hands through mechanical friction and the action of surfactants, in conjunction with water or without water, thus cleaning stains, eliminating and inhibiting bacteria, and moisturizing the skin of the hands.

[0003] In some public places with high traffic, such as shopping malls, train stations, and school restrooms, hand sanitizer is consumed quickly, requiring frequent manual checks and replenishment. This results in high labor costs, supply disruptions due to untimely replenishment, and the hand sanitizer delivery pipes are prone to blockages after prolonged use, making them difficult to replace. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic hand sanitizer dispensing device, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a liquid storage tank and a handwashing bottle. A PLC controller is installed on the left side of the outer side of the liquid storage tank, a feeding pump is installed on the lower inner side of the right wall of the liquid storage tank, a liquid level sensor is installed inside the handwashing bottle, and the liquid storage tank and the handwashing bottle are connected by two relatively sliding first and second infusion pipes.

[0008] Optionally, a lid is threaded onto the upper inner side of the liquid storage tank, and an electric pump is installed on the bottom inner wall of the handwashing bottle.

[0009] Optionally, the PLC controller is electrically connected to the feed pump and the PLC controller is electrically connected to the liquid level sensor.

[0010] Optionally, a second external threaded connector is threaded to the inner side of the left end of the first infusion tube, and the left side of the second external threaded connector is fixedly connected to the storage tank.

[0011] Optionally, the inner side of the right end of the second infusion tube is threaded with a first external thread connector, and the right side of the first external thread connector is fixedly connected to the handwashing bottle.

[0012] Optionally, a second trapezoidal block is fixedly connected to the inner side of the right end of the first infusion tube, and a first trapezoidal block is fixedly connected to the inner side of the left end of the second infusion tube. The right inclined surface of the first trapezoidal block and the left inclined surface of the second trapezoidal block press against each other against the sealing ring.

[0013] This utility model provides an automatic hand sanitizer dispensing device, which has the following beneficial effects:

[0014] 1. This automatic hand sanitizer dispensing device, equipped with a PLC controller, a dispensing pump, and a liquid level sensor, can automatically dispense hand sanitizer into bottles, eliminating the need for manual liquid level checks and preventing supply disruptions due to untimely replenishment.

[0015] 2. This automatic hand sanitizer dispensing device, by setting up a first infusion pipe and a second infusion pipe, allows the first infusion pipe and the second infusion pipe to slide relative to each other, making it easy to replace the hand sanitizer delivery pipe if it becomes blocked. Attached Figure Description

[0016] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a rear-view three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a frontal cross-sectional three-dimensional structural diagram of the present invention;

[0019] Figure 4 This is an enlarged structural schematic diagram of point A in Figure 3 of this utility model;

[0020] Figure 5 This is an enlarged structural schematic diagram of point B in Figure 3 of this utility model;

[0021] Figure 6 This is an enlarged structural diagram of point C in Figure 3 of this utility model.

[0022] In the diagram: 1. Can lid; 2. Storage tank; 3. First infusion tube; 4. Second infusion tube; 5. Hand sanitizer bottle; 6. PLC controller; 7. Feeding pump; 8. First external threaded connector; 9. Electric pump; 10. Liquid level sensor; 11. Second external threaded connector; 12. First trapezoidal block; 13. Sealing ring; 14. Second trapezoidal block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example

[0025] Please see Figure 1 As shown in Figure 4, this utility model provides a technical solution for an automatic hand sanitizer dispensing device, which includes a storage tank 2 and a hand sanitizer bottle 5. A PLC controller 6 is installed on the left side of the outer side of the storage tank 2, and a dispensing pump 7 is installed on the lower inner side of the right wall of the storage tank 2. A liquid level sensor 10 is installed inside the hand sanitizer bottle 5. The storage tank 2 and the hand sanitizer bottle 5 are connected by two relatively sliding first infusion pipes 3 and second infusion pipes 4.

[0026] Specifically, the PLC controller 6 has a built-in delay module. When the single running time of the feeding pump 7 is less than 30 seconds, it is determined to be an invalid liquid replenishment to avoid false signal triggering of the sensor. The interval between two liquid replenishments is ≥15 minutes to prevent frequent starts. The liquid level sensor 10 adopts a non-contact ultrasonic sensor, which is installed on the inner wall of the hand sanitizer bottle 5 at a vertical distance of 5-10 mm from the liquid level detection area. The surface is covered with a polytetrafluoroethylene non-stick coating with a thickness of 5-10 μm, which can withstand the long-term corrosion of surfactants in hand sanitizer.

[0027] Please refer to Figure 1 to Figure 3 The upper inner side of the liquid storage tank 2 is threaded with a tank cap 1, and the bottom inner wall of the handwashing bottle 5 is equipped with an electric pump 9.

[0028] Specifically, the electric pump 9 used to dispense hand sanitizer has a suction head ≥1.5m and a flow rate of 50-100mL / min.

[0029] Please refer to Figure 3 to Figure 4 The PLC controller 6 is electrically connected to the feed pump 7, and the PLC controller 6 is electrically connected to the liquid level sensor 10.

[0030] Specifically, the liquid level sensor 10 is set with a minimum liquid level threshold H1, 5-10 mm from the bottom of the bottle, and a maximum liquid level threshold H2, 20-30 mm from the bottle opening. The PLC controller 6 is configured to: trigger the feed pump 7 to start when the detected liquid level is ≤ H1; and trigger the feed pump 7 to stop when the detected liquid level is ≥ H2.

[0031] Please refer to Figure 3 to Figure 6 The inner side of the left end of the first infusion tube 3 is threaded with a second external thread connector 11, and the left side of the second external thread connector 11 is fixedly connected to the storage tank 2.

[0032] Specifically, the threads of the second external threaded connector 11 and the first infusion tube 3 are M20×1.5 fine threads with nickel plating and a thread mating length ≥15mm; anti-loosening washers are provided at the connection, and the thread wear is <0.05mm after 500 disassembly tests.

[0033] Please refer to Figure 3. The inner side of the right end of the second infusion tube 4 is threaded with a first external thread connector 8, and the right side of the first external thread connector 8 is fixedly connected to the handwashing bottle 5.

[0034] Specifically, the threads of the first external threaded connector 8 and the second infusion tube 4 are M20×1.5 fine threads with nickel plating and a thread mating length ≥15mm; anti-loosening washers are provided at the connection, and the thread wear is <0.05mm after 500 disassembly tests; the first infusion tube 3 and the second infusion tube 4 are made of food-grade polypropylene (PP) material, conforming to GB 4806.7-2016 standard; the inner wall roughness Ra≤0.8μm prevents hand sanitizer residue from clogging.

[0035] Please refer to Figure 3 to Figure 5 The inner side of the right end of the first infusion tube 3 is fixedly connected to the second trapezoidal block 14, and the inner side of the left end of the second infusion tube 4 is fixedly connected to the first trapezoidal block 12. The right inclined surface of the first trapezoidal block 12 and the left inclined surface of the second trapezoidal block 14 press against each other against the sealing ring 13.

[0036] Specifically, the inclination angles of the first trapezoidal block 12 and the second trapezoidal block 14 are both 30°-60°, and the sliding fit stroke is 20-50mm. The sealing ring 13 between them is made of silicone rubber with a Shore hardness of 70-80 and a cross-sectional diameter of 5-8mm, forming an interference fit seal. The sealing ring 13 is made of food-grade silicone rubber, conforming to GB 4806.11-2016 standard, with a temperature range of -20℃ to 80℃, a pressure resistance of ≥0.3MPa, a sealing contact pressure of ≥1.5N / mm² under the extrusion of the trapezoidal block, and a leakage rate of ≤0.1mL / min after 1000 sliding tests.

[0037] During use, as the hand sanitizer in the hand sanitizer bottle 5 is continuously used, the liquid level decreases. When the liquid level reaches its lowest point, the level sensor 10 transmits a signal to the PLC controller 6. The PLC controller 6 then calculates the data and transmits the signal to the feeding pump 7, causing it to begin supplying hand sanitizer to the hand sanitizer bottle 5 through the first infusion tube 3 and the second infusion tube 4. This causes the liquid level in the hand sanitizer bottle 5 to continuously rise. When the liquid level reaches its highest point, the level sensor 10 transmits a signal to the PLC controller 6, which then calculates the data and transmits the signal to the feeding pump 7, causing it to stop supplying hand sanitizer to the hand sanitizer bottle 5. If the first infusion tube 3 or the second infusion tube 4 becomes blocked, rotating the first infusion tube 3 and the second infusion tube 4 will unblock the blockage. The threaded connection between the second external threaded connector 11 is disconnected, and the threaded connection between the second infusion tube 4 and the first external threaded connector 8 is released. Then, the left end of the second infusion tube 4 is slid into the right end of the first infusion tube 3. The first infusion tube 3 and the second infusion tube 4 are removed, and the first infusion tube 3 and the second infusion tube 4 are replaced. Then, the new first infusion tube 3 and the second infusion tube 4 are aligned with the second external threaded connector 11 and the first external threaded connector 8. Then, the first infusion tube 3 and the second infusion tube 4 are rotated, and the threaded connection between the first infusion tube 3 and the second external threaded connector 11 and the threaded connection between the second infusion tube 4 and the first external threaded connector 8 are tightened, so that the first infusion tube 3 and the second infusion tube 4 move closer to the storage tank 2 and the handwashing bottle 5, thereby bringing the first trapezoidal block 12 closer to the second trapezoidal block 14, thereby squeezing the sealing ring 13 to form a seal.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic hand sanitizer dispensing device, comprising a storage tank (2) and a hand sanitizer bottle (5), characterized in that: A PLC controller (6) is installed on the left side of the outer side of the liquid storage tank (2), a feed pump (7) is installed on the lower inner side of the right wall of the liquid storage tank (2), a liquid level sensor (10) is installed inside the handwashing bottle (5), and the liquid storage tank (2) and the handwashing bottle (5) are connected by two relatively sliding first infusion pipes (3) and second infusion pipes (4).

2. The automatic hand sanitizer dispensing device according to claim 1, characterized in that: The upper inner side of the liquid storage tank (2) is threaded with a tank cover (1), and the bottom inner wall of the handwashing bottle (5) is equipped with an electric pump (9).

3. The automatic hand sanitizer dispensing device according to claim 1, characterized in that: The PLC controller (6) is electrically connected to the feed pump (7) and the PLC controller (6) is electrically connected to the liquid level sensor (10).

4. The automatic hand sanitizer dispensing device according to claim 1, characterized in that: The inner side of the left end of the first infusion tube (3) is threaded with a second external thread connector (11), and the left side of the second external thread connector (11) is fixedly connected to the storage tank (2).

5. The automatic hand sanitizer dispensing device according to claim 1, characterized in that: The inner side of the right end of the second infusion tube (4) is threaded with a first external thread connector (8), and the right side of the first external thread connector (8) is fixedly connected to the handwashing bottle (5).

6. The automatic hand sanitizer dispensing device according to claim 1, characterized in that: The inner side of the right end of the first infusion tube (3) is fixedly connected to a second trapezoidal block (14), and the inner side of the left end of the second infusion tube (4) is fixedly connected to a first trapezoidal block (12). The right inclined surface of the first trapezoidal block (12) and the left inclined surface of the second trapezoidal block (14) press against the sealing ring (13).

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