A liquid dispensing device and cleaning equipment

Abstract

This utility model discloses a liquid dispensing device and a cleaning equipment, belonging to the technical field of cleaning equipment. The liquid dispensing device includes a liquid bottle; a cover plate, with the liquid bottle inverted on the cover plate; a storage tank connected to the cover plate, the storage tank having a second chamber; a first sealing element fitted around the outer periphery of the cover plate, abutting against the liquid bottle; a second sealing element fitted around the outer periphery of the cover plate, abutting against the storage tank; the first and second sealing elements form a closed chamber with the liquid bottle, cover plate, and storage tank; a detection element connected to the second chamber via a connecting assembly, the detection element obtaining the liquid level in the liquid bottle by monitoring the gas pressure in the second chamber, the connecting assembly including a diaphragm that prevents liquid from entering the detection element. This device can prevent liquid from overflowing from the liquid bottle due to increased external temperature, thus avoiding dirt accumulation on the dispensing device platform. Simultaneously, it can monitor the liquid level in the bottle in real time, enabling accurate dispensing and ensuring the cleaning effect of the cleaning equipment.

Description

Technical Field

[0001] This utility model relates to a liquid dispensing device and a cleaning equipment, belonging to the field of cleaning equipment technology. Background Technology

[0002] With the rapid iteration of smart home technology and the increasing demand from consumers for convenient living, home appliances such as washing machines and dishwashers with cleaning liquid dispensing functions have gradually become mainstream in the market. Among them, external cleaning liquid dispensing devices can be used with ordinary cleaning equipment to accurately dispense cleaning liquid without manual intervention, thereby simplifying the cleaning process and bringing great convenience to users.

[0003] In existing external cleaning liquid dispensing devices, the liquid bottle uses an inverted liquid seal. When the external temperature rises, the gas inside the bottle expands, compressing the liquid and causing it to overflow from the dispensing device's platform. This results in dirt accumulation on the platform and loss of liquid from the bottle. Furthermore, existing liquid level detection devices are mostly float-type or probe-type devices. These devices have relatively low accuracy, and because they are in prolonged contact with the liquid during use, they are susceptible to corrosion and interference from impurities in the cleaning liquid, making it difficult to accurately measure the actual liquid level. This leads to inaccurate dispensing and affects the cleaning effect. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a liquid dispensing device and cleaning equipment. It solves the problems of liquid overflowing from the bottle when the external temperature rises, causing dirt to appear on the dispensing device platform, and the low detection accuracy of existing liquid level detection devices. Furthermore, these devices are corroded by the cleaning liquid after long-term immersion in the liquid, making it difficult to accurately measure the actual liquid level, resulting in inaccurate dispensing and affecting the cleaning effect.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] In a first aspect, this utility model provides a liquid dispensing device, comprising:

[0007] Liquid bottle;

[0008] A cover plate is placed on which the liquid bottle is inverted;

[0009] A liquid storage tank, which is connected to the cover plate, and the liquid storage tank is provided with a second chamber;

[0010] A first sealing element is fitted around the outer periphery of the cover plate, and the first sealing element abuts against the liquid bottle;

[0011] The second sealing element is sleeved on the outer periphery of the cover plate and abuts against the liquid storage tank; the first sealing element and the second sealing element form a closed chamber between the liquid bottle, the cover plate and the liquid storage tank;

[0012] The device includes a detection element and a connecting assembly. The detection element is connected to the second chamber via the connecting assembly. The detection element obtains the liquid level in the liquid bottle by monitoring the gas pressure in the second chamber. The connecting assembly includes a diaphragm installed between the detection element and the second chamber to prevent liquid from entering the detection element.

[0013] In one embodiment of this utility model, the first sealing member includes a first protrusion, a second protrusion and a third protrusion, wherein the first protrusion is located at one end of the first sealing member and can abut against the liquid bottle;

[0014] The second protrusion is located on the same side as the first protrusion, and the second and third protrusions are positioned opposite each other on both sides of the first seal. The second protrusion abuts against the liquid bottle, and the third protrusion abuts against the cover plate. This forms a seal between the liquid bottle and the cover plate, preventing liquid from leaking out from the connection point during use. Simultaneously, the third protrusion is nested within the cover plate, preventing the first seal from being pulled out by the liquid bottle when it is replaced.

[0015] In one embodiment of this utility model, the cover plate includes a piercing post, a first groove, and a second groove. The first groove is arranged around the outer periphery of the piercing post, the third protrusion is nested in the first groove, and the second sealing member is nested in the second groove. By providing the first and second sealing members, a closed cavity is formed between the liquid bottle, the cover plate, and the storage tank, preventing liquid from overflowing from the liquid bottle when the external temperature rises, thus avoiding dirt on the dispensing device platform and loss of liquid in the liquid bottle.

[0016] In one embodiment of the present invention, the liquid storage tank includes a first chamber, which is connected to a second chamber, and the first chamber is connected to the cover plate. The first chamber abuts against the second sealing element.

[0017] In one embodiment of this utility model, the liquid storage tank further includes a sealing plate and an interface. The sealing plate is located on one side of the second chamber and connected to the liquid storage tank. The interface is inclined and connected to the connecting assembly. This facilitates the backflow of liquid liquefied on the wall of the second connecting pipe into the second chamber. The sealing plate and the liquid storage tank can be sealed together by ultrasonic welding, hot melt welding, adhesive sealing, or silicone sealing, forming a closed chamber in the second chamber.

[0018] In one embodiment of this utility model, the connecting assembly further includes a first connecting pipe, a second connecting pipe, an adapter, and a water-stop clamp. The first connecting pipe and the second connecting pipe are connected through the adapter, and the water-stop clamp is sleeved on the outer periphery of the second connecting pipe.

[0019] The first connecting tube, on the side opposite to the adapter, connects to the detection element, and the second connecting tube, on the side opposite to the adapter, connects to the interface, allowing the detection element to communicate with the second chamber. Both the first and second connecting tubes are silicone tubing. A water-stop clamp can hold the second connecting tube closed. This facilitates calibration of the detection element and prevents prolonged liquid sealing in the second chamber and prolonged pressure on the pipeline, which could lead to inaccurate measurement accuracy. Calibration of the detection element maintains measurement accuracy.

[0020] In one embodiment of this invention, the adapter includes two pagoda-shaped heads, which are respectively connected to the first connecting pipe and the second connecting pipe. The diaphragm is a silicone diaphragm with a cross-shaped opening in the center, located between the two pagoda-shaped heads. The diaphragm prevents volatile gases from entering the detection element along the connecting pipe, thereby extending the service life of the detection element.

[0021] In one embodiment of this utility model, a connector and a dispensing pump are also included. The dispensing pump is connected to the first chamber via the connector, which is a silicone tube. The silicone tube has properties such as corrosion resistance, high temperature resistance, and aging resistance, which can extend the service life of the dispensing device.

[0022] In one embodiment of this utility model, the liquid bottle includes a shell, a movable member, and an elastic body. The movable member abuts against the shell through the elastic body, and the movable member can abut against the puncturing post.

[0023] Secondly, this utility model provides a cleaning device, including the liquid dispensing device, which also includes a device body. The liquid dispensing device is located on the outside of the device body and is suitable for dispensing cleaning liquid onto the device body.

[0024] The beneficial effects of this utility model are as follows:

[0025] 1. The present invention provides a liquid dispensing device and cleaning equipment. By setting a first sealing element and a second sealing element between the liquid bottle, the cover plate and the storage tank, a closed chamber is formed between the liquid bottle, the cover plate and the storage tank. This not only prevents the liquid in the liquid bottle from expanding and overflowing due to the rise in external temperature, thus preventing the dispensing device platform from getting dirty, but also avoids the problem of liquid loss and waste caused by liquid overflow.

[0026] 2. This liquid dispensing device has a second chamber on one side of the storage tank, which is sealed by a sealing plate. The first chamber is connected to the second chamber. The pressure generated by the liquid level in the bottle is transmitted to the second chamber, compressing the air in the second chamber. The higher the liquid level in the bottle, the greater the pressure. The detection element monitors the actual liquid level in the bottle by monitoring the pressure fluctuations of the gas in the second chamber in real time, thereby determining the amount of liquid used in the bottle. This allows for more accurate dispensing of cleaning liquid into the equipment, ensuring the cleaning effect of the cleaning equipment.

[0027] 3. The liquid dispensing device can block the liquid that evaporates due to heat in the second chamber by setting a diaphragm in the connecting component, preventing the evaporating liquid from corroding the detection element. In addition, the second connecting pipe and the interface are set at an angle, which facilitates the return of liquid liquefied on the wall of the second connecting pipe to the second chamber, avoiding it from flowing into the detection element and causing damage to the detection element, thereby extending the service life of the detection element.

[0028] 4. The detection element of the liquid dispensing device is connected to the second chamber through a connecting assembly. A water-stop clamp is installed on the second connecting pipe. At a specified time, the second connecting pipe is separated from the first connecting pipe by pressing the water-stop clamp. This allows for the calibration of the detection element and avoids the problem of inaccurate measurement accuracy of the detection element caused by the pipeline being under pressure for a long time, thereby improving the accuracy of the detection element. Attached Figure Description

[0029] Figure 1 An exploded view of the liquid dispensing device provided in an embodiment of this utility model.

[0030] Figure 2 A cross-sectional view of the liquid dispensing device provided in an embodiment of this utility model.

[0031] Figure 3 A cross-sectional view of a liquid bottle provided in an embodiment of this utility model.

[0032] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0033] Figure 5 This is a cross-sectional view of the liquid dispensing device provided in an embodiment of the present invention.

[0034] Figure 6 for Figure 5 A magnified view of a section at point B.

[0035] Figure 7 An exploded view of the connecting component provided in an embodiment of this utility model.

[0036] In the picture:

[0037] 1. Liquid bottle; 11. Shell; 12. Moving part; 13. Elastomer; 14. Ventilation pipe; 2. First seal; 21. First protrusion; 22. Second protrusion; 23. Third protrusion; 3. Cover plate; 31. Piercing post; 32. First groove; 33. Second groove; 4. Second seal; 5. Liquid storage tank; 51. First chamber; 52. Second chamber; 53. Sealing plate; 54. Interface; 6. Detection piece; 7. Connecting assembly; 71. First connecting pipe; 72. Second connecting pipe; 73. Adapter; 731. Pagoda head; 732. Diaphragm; 74. Water-stop clamp; 8. Connector; 9. Dispensing pump. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] like Figures 1 to 7As shown, this application provides a liquid dispensing device and cleaning equipment. The liquid dispensing device includes a liquid bottle 1, a cover plate 3, a storage tank 5, a detection element 6, a connecting assembly 7, a connector 8, and a dispensing pump 9. The liquid bottle 1 is used to store cleaning liquid. The liquid bottle 1 is inverted above the cover plate 3, and a first sealing element 2 is provided between the two, forming a seal between the liquid bottle 1 and the cover plate 3. The side of the cover plate 3 facing away from the liquid bottle 1 is connected to the storage tank 5, and the cover plate 3 and the storage tank 5 are sealed by a second sealing element 4. The liquid bottle 1, the cover plate 3, and the storage tank 5 form a closed cavity through the first sealing element 2 and the second sealing element 4, preventing the liquid in the liquid bottle 1 from overflowing onto the dispensing device platform and causing dirt. A through hole is provided in the center of the cover plate 3, allowing the liquid in the liquid bottle 1 to flow into the storage tank 5 through the through hole. The detection element 6 is installed on one side of the storage tank 5 and connected to the storage tank 5 through the connecting assembly 7. The detection element 6 can detect the liquid level in the liquid bottle 1 in real time. The liquid storage tank 5 is connected to the dispensing pump 9 via a connector 8, and the liquid in the liquid storage tank 5 is dispensed into the cleaning equipment via the dispensing pump 9.

[0042] In some embodiments, the liquid bottle 1 includes a housing 11, a movable component 12, an elastic body 13, and a venting pipe 14. The inside of the bottle opening of the liquid bottle 1 has a one-way valve structure. The movable component 12 and the elastic body 13 are located at the bottle opening. In the non-use state, the movable component 12 abuts against the housing 11 at the bottle opening through the elastic force provided by the elastic body 13, forming a closed chamber in the liquid bottle 1 and preventing liquid from overflowing. The venting pipe 14 is installed in the liquid bottle 1. When the liquid bottle 1 is inverted and installed on the cover plate 3, the venting pipe 14 allows the gas portion of the liquid bottle 1 to communicate with the outside, ensuring that the gas pressure inside the liquid bottle 1 is the same as the external atmospheric pressure. When the dispensing pump 9 is energized, the liquid in the liquid bottle 1 is drawn out by the dispensing pump 9. Air is introduced into the liquid bottle 1 through the venting pipe 14 to maintain a stable internal volume, ensuring that the liquid bottle 1 is not flattened and that the dispensing accuracy of the dispensing pump 9 is maintained.

[0043] like Figures 2 to 4 As shown, in some embodiments, the first sealing member 2 is provided with a first protrusion 21, which can abut against the housing 11. The first protrusion 21 makes the first sealing member 2 form an inverted structure, preventing the liquid bottle 1 from expanding when heated, and preventing the air exchange pipe 14 from being unable to expel the air in the liquid bottle 1 in time, causing the liquid bottle 1 to be pushed out and separated from the first sealing member 2. The first sealing member 2 is also provided with a second protrusion 22 and a third protrusion 23, which are arranged opposite to each other on both sides of the first sealing member 2. The second protrusion 22 is located on the same side as the first protrusion 21. The second protrusion 22 abuts against the housing 11, and the third protrusion 23 is nested in the cover plate 3 and abuts against the cover plate 3, forming a seal between the liquid bottle 1 and the cover plate 3, preventing liquid from overflowing from the connection between the two during use. At the same time, the third protrusion 23 nested in the cover plate 3 can prevent the first sealing member 2 from being pulled out by the liquid bottle 1 when the liquid bottle 1 is replaced.

[0044] In some embodiments, the cover plate 3 is provided with a piercing post 31. The piercing post 31 has a through hole in the middle and a pointed end that can abut against the movable member 12. When the liquid bottle 1 is installed on the cover plate 3, the movable member 12 is pushed open by the piercing post 31, and the liquid in the liquid bottle 1 flows into the storage tank 5 through the through hole in the middle of the piercing post 31 for later use. The cover plate 3 is also provided with a first groove 32 and a second groove 33. The first groove 32 is located on one side of the piercing post 31, and a third protrusion 23 is nested in the first groove 32 to connect the first sealing member 2 to the cover plate 3. The second groove 33 is located on the side of the first groove 32 away from the piercing post 31, and a second sealing member 4 is nested in the second groove 33 to form a seal between the cover plate 3 and the storage tank 5. The side of the second sealing member 4 near the storage tank 5 is also provided with a protrusion that can compress the storage tank 5 to increase the sealing between the cover plate 3 and the storage tank 5. By setting the first sealing element 2 and the second sealing element 4, a closed cavity is formed between the liquid bottle 1, the cover plate 3 and the storage tank 5, so as to prevent the liquid in the liquid bottle 1 from overflowing when the external temperature rises, causing dirt to appear on the platform of the dispensing device and the loss of liquid in the liquid bottle 1.

[0045] like Figure 5 and Figure 6As shown, in some embodiments, the storage tank 5 is provided with a first chamber 51, and the second sealing member 4 abuts against the inner wall of the first chamber 51, so that the cover plate 3 and the first chamber 51 form a seal. The first chamber 51 is connected to the cover plate 3 and the liquid bottle 1. The first chamber 51 is connected to the dispensing pump 9 through the connector 8. The liquid in the liquid bottle 1 flows into the first chamber 51 through the through hole in the middle of the puncture column 31. After the dispensing pump 9 is powered on, it draws the liquid in the first chamber 51 through the connector 8 and pumps it into the cleaning equipment. A second chamber 52 is provided on one side of the first chamber 51. The second chamber 52 is a gas chamber. A sealing plate 53 is provided at one end of the second chamber 52. The sealing plate 53 is connected to the storage tank 5. The sealing plate 53 and the storage tank 5 can form a sealed connection by means of ultrasonic welding, hot melt welding, glue sealing or silicone pressing, so that the second chamber 52 forms a closed chamber. The second chamber 52 has an interface 54 at the end opposite to the sealing plate 53. The interface 54 is inclined towards the liquid storage tank 5. The second chamber 52 is connected to the connecting assembly 7 through the interface 54. The end of the connecting assembly 7 opposite to the interface 54 is connected to the detection element 6. The end of the second chamber 52 near the sealing plate 53 is connected to the end of the first chamber 51 away from the cover plate 3. When the liquid bottle 1 is installed on the cover plate 3, after the liquid flows into the first chamber 51, the liquid in the first chamber 51 flows into the second chamber 52 through the connection, and compresses the air in the second chamber 52 to form a liquid seal. Since the liquid bottle 1, cover plate 3, and storage tank 5 are sealed together, the liquid bottle 1 is connected to the outside air through the ventilation pipe 14. The height of the liquid in the liquid bottle 1 creates pressure that is transmitted to the second chamber 52, squeezing the air in the second chamber 52. The higher the liquid level in the liquid bottle 1, the greater the pressure. The detection element 6 monitors the actual height of the liquid in the liquid bottle 1 by monitoring the pressure fluctuation of the gas in the second chamber 52 in real time, thereby accurately determining the amount of liquid used in the liquid bottle 1. This allows the dispensing device to accurately dispense cleaning liquid and ensure the washing effect of the cleaning equipment.

[0046] like Figure 7As shown, in some embodiments, the connecting assembly 7 includes a first connecting pipe 71 and a second connecting pipe 72. The first connecting pipe 71 and the second connecting pipe 72 are connected via an adapter 73. The end of the first connecting pipe 71 facing away from the adapter 73 is connected to the detection element 6, and the end of the second connecting pipe 72 facing away from the adapter 73 is connected to the interface 54. The pressure generated by the compression of gas in the second chamber 52 is transmitted to the detection element 6 through the second connecting pipe 72, the adapter 73, and the first connecting pipe 71, enabling the detection element 6 to monitor the changes in gas pressure in the second chamber 52 in real time without immersion in liquid, thus avoiding the problem of liquid corrosion of the detection element 6. The adapter 73 includes a pagoda head 731 and a diaphragm 732. Two pagoda heads 731 are provided, which are respectively connected to the first connecting pipe 71 and the second connecting pipe 72. The diaphragm 732 is a silicone cross-shaped diaphragm located between the two pagoda heads 731. The liquid in the liquid bottle 1 is mostly a corrosive disinfectant liquid such as a sterilizing solution. When the liquid in the second chamber 52 evaporates due to heat, in order to prevent the evaporating liquid from corroding the detection element 6, the second connecting pipe 72 is connected to the interface 54 at an angle. This facilitates the return of the liquid liquefied on the wall of the second connecting pipe 72 to the second chamber 52. At the same time, the diaphragm 732 can prevent the evaporating gas from entering the detection element 6 along the connecting pipe, thereby extending the service life of the detection element 6.

[0047] In some embodiments, a water-stop clamp 74 is also provided on the second connecting pipe 72, which can clamp the second connecting pipe 72 to seal it. After the pagoda head 731 is disconnected from the second connecting pipe 72, the detection element 6 is calibrated to avoid prolonged liquid sealing in the second chamber 52 and prolonged pressure on the pipeline, which would lead to inaccurate measurement accuracy of the detection element 6. By calibrating the detection element 6, the accuracy of the measurement can be maintained.

[0048] Optionally, the detection element 6 is a water level sensor or a pressure sensor.

[0049] Optionally, the first connecting pipe 71, the second connecting pipe 72, and the connector 8 are all silicone tubes. Silicone tubes have functions such as corrosion resistance, high temperature resistance, and aging resistance, which can extend the service life of the dispensing device.

[0050] In summary, the liquid dispensing device provided in this application, by setting the first sealing element 2 and the second sealing element 4, forms a closed cavity with the liquid bottle 1, the cover plate 3, and the storage tank 5. When the external temperature rises, the liquid in the liquid bottle 1 expands due to heat, preventing it from overflowing onto the dispensing device's platform and avoiding dirt formation and liquid loss in the liquid bottle 1. The liquid in the liquid bottle flows into the first chamber 51 of the storage tank 5 through the hole in the middle of the puncture column 31, and is connected to the dispensing pump 9 through the connector 8. After the dispensing pump 9 is powered on, it can pump the liquid in the first chamber 51 into the cleaning equipment in a metered manner. Since the first chamber 51 is connected to the second chamber 52, the liquid in the first chamber 51 flows into the second chamber 52, compressing the gas in the second chamber 52. The higher the liquid level in the liquid bottle 1, the greater the pressure. The detection element 6 monitors the actual liquid level in the liquid bottle 1 by monitoring the pressure fluctuation of the gas in the second chamber 52 in real time, thereby accurately determining the amount of liquid used in the liquid bottle 1. This allows the dispensing device to accurately dispense cleaning liquid and ensure the cleaning effect of the cleaning equipment.

[0051] Furthermore, this application also provides a cleaning device using the aforementioned liquid dispensing device. The cleaning device further includes a device body, with the liquid dispensing device installed on the outside of the device body. A dispensing pump 9 dispenses a measured amount of liquid from the liquid dispensing device into the device body. This cleaning device can be a commercial cleaning appliance such as a washing machine, dishwasher, dry cleaning machine, or dryer. Because the cleaning device uses any of the aforementioned liquid dispensing devices, it possesses all the advantages described above.

[0052] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A liquid dispensing device, characterized in that, include: Liquid bottle (1); Cover plate (3), the liquid bottle (1) is placed upside down on the cover plate (3); A liquid storage tank (5) is connected to the cover plate (3), and the liquid storage tank (5) is provided with a second chamber (52); The first sealing element (2) is sleeved on the outer periphery of the cover plate (3) and abuts against the liquid bottle (1); The second sealing element (4) is fitted around the outer periphery of the cover plate (3) and abuts against the liquid storage tank (5); the first sealing element (2) and the second sealing element (4) make the liquid bottle (1), the cover plate (3) and the liquid storage tank (5) form a closed chamber; The detection element (6) and the connecting assembly (7) are provided. The detection element (6) is connected to the second chamber (52) through the connecting assembly (7). The detection element (6) obtains the liquid level in the liquid bottle (1) by monitoring the gas pressure in the second chamber (52). The connecting assembly (7) includes a diaphragm (732). The diaphragm (732) is installed between the detection element (6) and the second chamber (52) and can prevent liquid from entering the detection element (6).

2. The liquid dispensing device according to claim 1, characterized in that, The first sealing member (2) includes a first protrusion (21), a second protrusion (22) and a third protrusion (23). The first protrusion (21) is located at one end of the first sealing member (2) and can abut against the liquid bottle (1). The second protrusion (22) is located on the same side as the first protrusion (21). The second protrusion (22) and the third protrusion (23) are arranged opposite to each other on both sides of the first seal (2). The second protrusion (22) abuts against the liquid bottle (1), and the third protrusion (23) abuts against the cover plate (3).

3. The liquid dispensing device according to claim 2, characterized in that, The cover plate (3) includes a piercing post (31), a first groove (32) and a second groove (33). The first groove (32) is arranged around the outer periphery of the piercing post (31). The third protrusion (23) is nested in the first groove (32). The second seal (4) is nested in the second groove (33).

4. The liquid dispensing device according to claim 1, characterized in that, The liquid storage tank (5) includes a first chamber (51), which is connected to the second chamber (52). The first chamber (51) is connected to the cover plate (3), and the first chamber (51) abuts against the second sealing member (4).

5. A liquid dispensing device according to claim 4, characterized in that, The liquid storage tank (5) also includes a sealing plate (53) and an interface (54). The sealing plate (53) is located on one side of the second chamber (52) and connected to the liquid storage tank (5). The interface (54) is inclined and connected to the connecting assembly (7).

6. A liquid dispensing device according to claim 5, characterized in that, The connecting assembly (7) further includes a first connecting pipe (71), a second connecting pipe (72), an adapter (73), and a water-stop clamp (74). The first connecting pipe (71) and the second connecting pipe (72) are connected through the adapter (73), and the water-stop clamp (74) is sleeved on the outer periphery of the second connecting pipe (72). The first connecting tube (71) is connected to the detection element (6) on the side away from the adapter (73), and the second connecting tube (72) is connected to the interface (54) on the side away from the adapter (73), so that the detection element (6) communicates with the second chamber (52). Both the first connecting tube (71) and the second connecting tube (72) are silicone tubes.

7. A liquid dispensing device according to claim 6, characterized in that, The adapter (73) includes two pagoda heads (731), which are respectively connected to the first connecting tube (71) and the second connecting tube (72). The diaphragm (732) is a silicone diaphragm with a cross-shaped opening in the center and is located between the two pagoda heads (731).

8. A liquid dispensing device according to claim 4, characterized in that, It also includes a connector (8) and a dispensing pump (9), the dispensing pump (9) being connected to the first chamber (51) via the connector (8), the connector (8) being a silicone tube.

9. A liquid dispensing device according to claim 3, characterized in that, The liquid bottle (1) includes a shell (11), a movable part (12) and an elastic body (13). The movable part (12) abuts against the shell (11) through the elastic body (13), and the movable part (12) can abut against the piercing post (31).

10. A cleaning device, characterized in that, The cleaning equipment includes a liquid dispensing device as described in any one of claims 1-9, and the cleaning equipment further includes a device body, wherein the liquid dispensing device is disposed on the outside of the device body and is adapted to dispense cleaning liquid onto the device body.

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