A slow-release cleaning device for a toilet cistern

Abstract

A slow-release cleaning device for toilet tanks includes a bottle, a first buoyancy plug, and a second buoyancy plug. The bottle contains a cavity for holding cleaning agents, and the side wall of the cavity has a guide hole and an air pressure hole for connecting to the outside. The first buoyancy plug is movably installed at the guide hole and can open or close the guide hole as the water level in the tank rises. The second buoyancy plug is movably installed at the air pressure hole and can open or close the air pressure hole as the water level in the tank rises. A water cut-off level and a water flow range are formed between the guide hole and the air pressure hole from top to bottom, and the water cut-off level is not lower than the air pressure hole. When the water level in the tank is in the water flow range, water enters the cavity from the guide hole. When the water level rises to the water cut-off level, the cavity is filled with water, the first buoyancy plug floats up to close the guide hole, and the second buoyancy plug floats up to close the air pressure hole. This solution can perfectly control the release timing of the cleaning agent, further avoiding excessive dissolution and release of the cleaning agent, thus enhancing the slow-release effect.

Description

Technical Field

[0001] This utility model belongs to the field of bathroom products, and in particular relates to a slow-release cleaning device for toilet tanks. Background Technology

[0002] A flush toilet consists of a tank and a toilet body. After use, the toilet body will accumulate stains and emit odors, and manual cleaning is quite troublesome. Therefore, corresponding tank cleaning devices have appeared on the market.

[0003] For example, utility model patent application number 2016211123762 mentions a toilet tank cleaner slow-release device, which includes a shell and a cover installed on the upper end of the shell. The shell has a cavity for filling the cleaner, and the side wall of the cavity has a liquid exchange hole. The cover has an air flow hole for maintaining air pressure balance. During the process of draining and filling the tank, water can normally enter and exit the cavity through the liquid exchange hole to contact the cleaner to form a mixture and carry the mixture into the tank. When the tank is drained, the mixture can be discharged together to flush the toilet body, which is convenient to use. However, since the air flow hole of the device is always kept open, the mixture in the cavity will be discharged and diffused into the tank through the air pressure hole, resulting in the problem of the cleaner dissolving too quickly and releasing too much.

[0004] To address this issue, the applicant proposed a toilet tank cleaning device in utility model patent application number 2024204901805. This device cuts off the flow path of the mixed liquid by setting a second buoyancy plug at the air pressure hole (air flow hole), ensuring that the mixed liquid can only be released through the guide hole (liquid exchange hole), thereby delaying the release of the detergent and ensuring that the detergent can be used for a longer period. However, during use, it was found that when the water in the tank submerges the guide hole, the detergent continues to dissolve and be released, and the actual slow-release effect is still not ideal, exhibiting significant shortcomings. Therefore, a new device is urgently needed to solve this problem. Utility Model Content

[0005] Technical problems to be solved This invention provides a slow-release cleaning device for toilet tanks, which can perfectly control the release timing of the cleaning agent, further avoiding the cleaning agent from dissolving too quickly and releasing too much, thus enhancing the slow-release effect.

[0006] Technical solution To achieve the above objectives, this utility model provides the following technical solution: A slow-release cleaning device for toilet tanks includes a bottle, a first buoyancy plug, and a second buoyancy plug. The bottle has an internal cavity for holding cleaning agent, and the side wall of the cavity has a flow-through hole and an air pressure hole connecting to the outside, with the air pressure hole located above the flow-through hole. The first buoyancy plug is movably installed at the flow-through hole, and the first buoyancy plug can open or close the flow-through hole by floating with the water level in the tank. The second buoyancy plug is movably installed at the air pressure hole, and the second buoyancy plug… The plug can open or close the air pressure hole as the water level in the tank floats; wherein, a water cut-off level and a water flow range are formed between the flow guide hole and the air pressure hole from top to bottom, and the water cut-off level is located at a position not lower than the air pressure hole; when the water level in the tank is in the water flow range, water enters the receiving cavity through the flow guide hole; when the water level in the tank rises to the water cut-off level, the receiving cavity is filled with water, the first buoyancy plug floats up and closes the flow guide hole, and the second buoyancy plug floats up and closes the air pressure hole.

[0007] Preferably, the water cut-off level is located below the air pressure hole. When the water level in the tank rises to the water cut-off level and causes the first buoyancy plug to float up and close the guide hole, the containment cavity is not full of water, and at this time the overall weight of the bottle containing the detergent and the mixture is greater than its own buoyancy. When the water level in the tank rises above the air pressure hole, the second buoyancy plug floats up and closes the air pressure hole.

[0008] Preferably, the first buoyancy plug includes a first float, a first sliding column, and a first plug block; the first sliding column is slidably installed in the guide hole, and there is a liquid gap between the first sliding column and the guide hole for water to pass through; the first plug block is installed at the bottom of the first sliding column and placed in the receiving cavity; the first float is installed at the top of the first sliding column and placed outside, and the first float is made of a material with a density lower than that of water; wherein, when the water level in the tank rises to the water passage section, the first buoyancy plug floats up under the buoyancy of the first float, thereby driving the first sliding column to move upward, and causing the first plug block to gradually approach the guide hole, and at this time the guide hole allows water to pass through normally; when the water level in the tank rises to the water cut-off level, the first float drives the first sliding column to move upward, and causes the first plug block to close the guide hole; when the water level in the tank drops, the first buoyancy plug falls under the action of gravity, thereby driving the first sliding column to move downward, and causing the first plug block to open the guide hole, and at this time the receiving cavity is connected to the outside through the liquid gap.

[0009] Preferably, the first float, the first slide column, and the first plug are all made of a material with a density lower than that of water and are integrally formed, and the distance between the flow guide hole and the air pressure hole does not exceed the length of the first slide column; when the water level in the tank rises to the cut-off water level, the water is submerged to a specific position of the first slide column, causing the first plug to close the flow guide hole.

[0010] Preferably, the second buoyancy plug includes a second float, a second sliding column, and a second plug block; the second sliding column is slidably installed in the air pressure hole, and there is a gas gap between the second sliding column and the air pressure hole for gas passage; the second plug block is installed at the bottom of the second sliding column and placed in the receiving cavity; the second float is installed at the top of the second sliding column and placed in the outside, and the second float is made of a material with a density lower than that of water; wherein, when the water level in the tank rises to the water cut-off level, the second buoyancy plug floats up under the buoyancy of the second float, thereby driving the second sliding column to move upward and causing the second plug block to close the air pressure hole; when the water level in the tank drops to the water passage section and is located below the air pressure hole, the second buoyancy plug falls under the action of gravity, thereby driving the second sliding column to move downward and causing the second plug block to open the air pressure hole, and at this time the receiving cavity is connected to the outside through the gas gap.

[0011] Preferably, the second float, the second slide, and the second plug are all made of a material with a density lower than that of water and are integrally formed. When the water level in the tank rises above the cut-off water level, the water is submerged to a specific position of the second slide, causing the second plug to close the air pressure hole.

[0012] Preferably, the first float is provided with a first partition, which can abut against the bottle body and form a first opening for connecting the liquid gap as the first float falls; the second float is provided with a second partition, which can abut against the bottle body and form a second opening for connecting the gas gap as the second float falls.

[0013] Preferably, the first partition is provided with a plurality of parallel circular arrays at the bottom of the first float, and the plurality of first partitions form the first opening between each pair; the second partition is provided with a plurality of parallel circular arrays at the bottom of the second float, and the plurality of second partitions form the second opening between each pair.

[0014] Preferably, the contact surfaces between the bottle body and the first and second partitions are both planar.

[0015] Preferably, both the first plug and the second plug are hemispherical, and the diameter of the first plug is larger than the diameter of the guide hole, and the diameter of the second plug is larger than the diameter of the air pressure hole.

[0016] Preferably, the bottle body includes a detachable bottle body and a bottle cap, the bottle body and the bottle cap forming the receiving cavity, and the flow guide hole and the air pressure hole are both provided on the bottle cap.

[0017] Preferably, the bottle cap has a recessed cavity, and the flow guide hole is disposed on the bottom wall of the recessed cavity. When the first buoyancy plug is not floating, it is placed in the recessed cavity. The centerlines of the air pressure hole and the flow guide hole are both designed vertically so that the gas flow direction and the liquid flow direction are kept on the same plane.

[0018] Preferably, the bottle cap has a pressure bar that extends into the bottle body and presses against the cleaning agent.

[0019] Preferably, the top of the bottle cap is provided with a connecting block having a rope hole for attaching a hanging rope.

[0020] Beneficial effects This utility model provides a slow-release cleaning device for toilet tanks. It features a container cavity within the bottle for holding the cleaning agent, and an air pressure vent on the side wall of the container to ensure pressure balance inside and outside the bottle, allowing water in the tank and container to flow smoothly through a guide hole. A first and second buoyancy plug are designed to open and close the guide hole and air pressure vent respectively under specific conditions. On one hand, during water filling the tank, water is introduced into the container cavity to contact the cleaning agent and form a mixture. Once the tank is full, the channel between the bottle and the tank is completely cut off, preventing the mixture in the container cavity from draining into the tank through the guide hole and air pressure vent, effectively reducing the cleaning agent's dissolution rate. On the other hand, during flushing the toilet, the mixture in the container cavity is smoothly drained into the tank, improving the flushing and cleaning effect. Therefore, this slow-release cleaning device perfectly controls the timing of cleaning agent release, further preventing excessive dissolution and release, enhancing the slow-release effect, ensuring the cleaning agent can be used for a longer period, and reducing user costs. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 A schematic diagram of the overall structure of Embodiment 1 is shown; Figure 2 A schematic diagram of the usage state of Embodiment 1 is shown. Figure 1 ; Figure 3 It shows Figure 2 Top view; Figure 4 It shows Figure 3Sectional view AA; Figure 5 A schematic diagram of the usage state of Embodiment 1 is shown. Figure 2 ; Figure 6 It shows Figure 5 BB (sectional view); Figure 7 A schematic diagram of the working principle of Embodiment 1 is shown. Figure 1 ; Figure 8 A schematic diagram of the working principle of Embodiment 1 is shown. Figure 2 ; Figure 9 A schematic diagram illustrating the working principle of another example in Embodiment 1 is shown; Figure 10 A schematic diagram of the overall structure of Embodiment 2 is shown; Figure 11 The usage status of Embodiment 2 is shown in the diagram. Figure 1 ; Figure 12 It shows Figure 11 sectional view CC; Figure 13 The usage status of Embodiment 2 is shown in the diagram. Figure 2 ; Figure 14 It shows Figure 13 sectional view DD; Figure 15 A schematic diagram illustrating the working principle of Embodiment 2 is shown; Figure 16 A schematic diagram illustrating the working principle of another example in Embodiment 2 is shown; Figure 17 An exploded view of the bottle body of this utility model is shown; Figure 18 A schematic diagram of the first and second buoyancy plugs in Embodiment 1 is shown. Figure 19 A schematic diagram of the first and second buoyancy plugs in Embodiment 2 is shown.

[0022] In the diagram: 1 First buoyancy plug, 11 First float, 111 First partition block, 1110 First opening, 12 First sliding column, 120 Liquid gap, 13 First plug block, 2 Second buoyancy plug, 21 Second float, 211 Second partition block, 2110 Second opening, 22 Second sliding column, 220 Gas gap, 23 Second plug block, 3 Bottle body, 30 Receiving cavity, 301 Flow guide hole, 302 Air pressure hole, 31 Bottle body, 32 Bottle cap, 321 Concave cavity, 322 Pressure rod, 323 Connecting block, 3230 Rope hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0024] Example 1 See appendix Figure 1 -Appendix Figure 9 A slow-release cleaning device for toilet tanks includes a first buoyancy plug 1, a second buoyancy plug 2, and a bottle body 3. The bottle body 3 has an internal cavity 30 for holding cleaning agent. The cavity 30 has a flow guide hole 301 and an air pressure hole 302 connected to the outside on its side wall, with the air pressure hole 302 located above the flow guide hole 301. The first buoyancy plug 1 is movably installed at the flow guide hole 301, and the first buoyancy plug 1 can open or close the flow guide hole 301 as the water level in the tank floats. The second buoyancy plug 2 is movably installed at the air pressure hole 302, and the second buoyancy plug 2 can open or close the air pressure hole 302 as the water level in the tank floats. A water cut-off level and a water flow range are formed between the flow guide hole 301 and the air pressure hole 302 from top to bottom, and the water cut-off level is not lower than the air pressure hole 302.

[0025] Specifically, when the bottle body 3, the first buoyancy plug 1, and the second buoyancy plug 2 are completely submerged in the water in the water tank (not shown in the figure), the first buoyancy plug 1 and the second buoyancy plug 2 float up and close the guide hole 301 and the air pressure hole 302 respectively, so as to completely cut off the water path between the bottle body 3 and the water tank and prevent the mixture in the containment cavity 30 from continuously escaping into the water tank through the guide hole 301 and the air pressure hole 302.

[0026] During the flushing process of the toilet body (not shown in the diagram), the water level in the tank gradually decreases until it is in the water flow zone and below the air pressure hole 302. At this point, the first buoyancy plug 1 and the second buoyancy plug 2 move down and open the guide hole 301 and the air pressure hole 302 respectively. The opened air pressure hole 302 can maintain the air pressure balance inside and outside the receiving cavity 30. Under the action of air pressure, the receiving cavity 30 needs to be consistent with the water level in the tank. Therefore, the mixed liquid in the receiving cavity 30 will be discharged into the tank through the guide hole 301 as the water level in the tank decreases, so that the water in the tank has the effect of cleaning the toilet body. Discharge will stop when the level of the mixed liquid in the receiving cavity 30 is lower than the guide hole 301.

[0027] During the process of refilling the water tank, the water level will gradually rise. When the water level enters the water flow zone, the first buoyancy plug 1 floats slightly and the guide hole 301 is not closed. Since the air pressure hole 302 is open, under the action of air pressure, the water level in the tank will be consistent with the water level in the receiving cavity 30. Therefore, the water in the tank will continuously enter the receiving cavity 30 through the guide hole 301 and come into contact with the cleaning agent to form a mixture. When the water level in the tank continues to rise, depending on the location of the water cut-off level, there are two situations: Firstly, if the location of the water cut-off level is flush with the air pressure hole 302, when the water level in the tank continues to rise to the water cut-off level, the containment cavity 30 will be filled with the mixed liquid, and the first buoyancy plug 1 and the second buoyancy plug 2 will float up simultaneously and close the guide hole 301 and the air pressure hole 302 respectively, so as to prevent the mixed liquid in the containment cavity 30 from continuously escaping into the water tank through the guide hole 301 and the air pressure hole 302; Secondly, if the water level cutoff point is higher than the air pressure hole 302, when the water level in the tank rises to the air pressure hole 302, the containment cavity 30 will be filled with the mixture. The second buoyancy plug 2 will close the air pressure hole 302 first, while the guide hole 301 will remain open, so that a small amount of the mixture in the containment cavity 30 can still escape into the water tank, thereby increasing the concentration of detergent in the water inside the tank and improving the cleaning effect of the water. After the water level in the tank continues to rise to the water level cutoff point, the first buoyancy plug 1 will float up completely and close the guide hole to prevent the mixture in the containment cavity 30 from escaping into the water tank through the guide hole 301.

[0028] In summary, this utility model, by designing a receiving cavity 30 inside the bottle body 3 for holding detergent, and by designing an air pressure hole 302 on the side wall of the receiving cavity 30 to ensure the air pressure balance inside and outside the bottle body 3, allows the water in the water tank and the receiving cavity 30 to flow smoothly through the guide hole 301; by designing a first buoyancy plug 1 and a second buoyancy plug 2 to open and close the guide hole 301 and the air pressure hole 302 respectively under specific conditions, on the one hand, water can be introduced into the receiving cavity 30 to contact the detergent and form a mixture during the water tank filling process, and after the water tank is full, the channel between the bottle body 3 and the water tank can be completely cut off, preventing the mixture in the receiving cavity 30 from being discharged into the water tank through the guide hole 301 and the air pressure hole 302, effectively reducing the dissolution rate of the detergent; on the other hand, during the flushing of the toilet body, the mixture in the receiving cavity 30 can be smoothly discharged into the water in the water tank, thereby improving the flushing and cleaning effect. The mixture formed by water contacting the detergent has a diffusion effect. Therefore, the more channels between the receiving cavity 30 and the water tank, the faster the diffusion speed. Conversely, this slow-release cleaning device, by closing the guide hole 301 and the air pressure hole 302, can comprehensively slow down the diffusion speed of the mixture, preventing liquid exchange between the receiving cavity 30 and the water tank after the water tank is full. Therefore, this slow-release cleaning device can perfectly control the release timing of the detergent, further avoiding the detergent from dissolving too quickly and releasing too much, enhancing the slow-release effect, ensuring that the detergent can be used for a longer time, and reducing user costs.

[0029] Example 2 See appendix Figure 10 -Appendix Figure 16 A slow-release cleaning device for toilet tanks includes a bottle body 3, a first buoyancy plug 1, and a second buoyancy plug 2. The bottle body 3 has an internal cavity 30 for holding cleaning agent. The cavity 30 has a flow guide hole 301 and an air pressure hole 302 on its side wall, with the air pressure hole 302 located above the flow guide hole 301. The first buoyancy plug 1 is movably installed at the flow guide hole 301, and the first buoyancy plug 1 can open or close the flow guide hole 301 as the water level in the tank floats. The second buoyancy plug 2 is movably installed at the air pressure hole 302, and the second buoyancy plug 2 can open or close the air pressure hole 302 as the water level in the tank floats. A water cut-off level and a water flow range are formed between the flow guide hole 301 and the air pressure hole 302 from top to bottom, and the water cut-off level is located below the air pressure hole 302.

[0030] Specifically, when the bottle body 3, the first buoyancy plug 1, and the second buoyancy plug 2 are completely submerged in the water in the water tank (not shown in the figure), the first buoyancy plug 1 and the second buoyancy plug 2 float up and close the guide hole 301 and the air pressure hole 302 respectively, so as to completely cut off the escape channel of the mixture.

[0031] During the flushing of the toilet body (not shown in the diagram), the water level in the tank gradually decreases. When the water level drops below the air pressure hole 302, if the water level has not entered the water flow zone, the water in the receiving cavity 30 remains full, preventing the second buoyancy plug 2 from opening the air pressure hole 302. Only when the water level drops below the water cut-off level and enters the water flow zone will the first buoyancy plug 1 open the guide hole 301, allowing the mixture in the receiving cavity 30 to flow. Only then can the second buoyancy plug 2 open the air pressure hole 302 to maintain the air pressure balance inside and outside the receiving cavity 30. Under the action of air pressure, the water level in the receiving cavity 30 will remain consistent with the water level in the tank. Therefore, the mixture in the receiving cavity 30 will be discharged into the tank through the guide hole 301 as the water level drops, giving the water in the tank a cleaning effect. The discharge of the mixture will stop only after the water level in the receiving cavity 30 is lower than the guide hole 301.

[0032] During the process of refilling the water tank, when the water level in the tank rises to the cut-off level, the first buoyancy plug 1 will close the guide hole 301 first. At this time, there is air in the receiving cavity 30 because it is not full of the mixture. However, the overall weight of the bottle 3 containing the detergent and the mixture is greater than its own buoyancy, so as to prevent the bottle 3 from floating. When the water level in the tank continues to rise to the air pressure hole 302, the water inside the tank will flow into the receiving cavity 30 through the air pressure hole 302 and expel the air. After the receiving cavity 30 is full of the mixture, the second buoyancy plug 2 will float up completely and close the air pressure hole to prevent the mixture in the receiving cavity 30 from escaping into the water tank through the air pressure hole 302.

[0033] Under normal circumstances, the cavity 30, which is not filled with the mixed liquid, contains air, which increases the buoyancy of the bottle 3, causing the air pressure hole 302 to be unable to be submerged by the water in the tank. However, by increasing the weight of the bottle 3 itself to increase the gravity it experiences, it can effectively overcome the buoyancy and avoid floating, ensuring that the air pressure hole 302 of the bottle 3 can be properly submerged by the water in the tank.

[0034] In summary, compared with the technical solution in Embodiment 1, the technical solution described in Embodiment 2 can significantly reduce the opening time of the guide hole 301, further reduce the release rate of the mixture, and reduce the use of cleaning agent; however, it will also lead to a decrease in the cleaning effect of the water inside the tank. Users can choose according to their own needs.

[0035] It should be noted that in practical applications, manufacturers can choose the technical solution in Embodiment 1 or Embodiment 2 to set the location of the water cut-off level according to the user's cleaning needs for the toilet body and the user's desired duration of use of the cleaning agent. This utility model does not impose any restrictions on this. In addition, there are various types of cleaning agents, such as slow-release gels and soap-like solids, to effectively ensure the usage time of the cleaning agent. Users can also choose cleaning agents with corresponding fragrances and forms according to their own preferences. This utility model does not impose any restrictions on this either.

[0036] Among them, as attached Figure 8 As shown, in Embodiment 1, the first buoyancy plug 1 is relatively long. Therefore, when using a solid cleaning agent, a hole can be made in the solid cleaning agent to provide space for the first buoyancy plug 1 to move. If no hole is made in the solid cleaning agent, the solid cleaning agent will support the first piston, but this will not affect the normal use of this slow-release cleaning device. The manufacturer can make adjustments based on actual usage effects. Similarly, in Embodiment 2, the first buoyancy plug 1 is relatively short. Therefore, when using a solid cleaning agent, the manufacturer can directly support the first buoyancy plug 1 with the fixed cleaning agent without needing to make a hole in the fixed cleaning agent to provide space for the first buoyancy plug 1 to move.

[0037] It should also be noted that in Embodiment 1, the water has a tendency to cause the bottle 3 to float and sway. Therefore, the manufacturer can also increase the overall weight of the bottle 3 to effectively overcome buoyancy and prevent the bottle 3 from swaying during use and affecting the liquid exchange between the receiving cavity 30 and the water tank. As for how to increase the overall weight of the bottle 3, the manufacturer can increase the mass of the cleaning agent, or use metal or other materials with a certain weight to make the bottle 3, or embed weight-increasing blocks (not shown in the figure) in the bottle 3. Since there are various ways to increase weight, this utility model does not limit this.

[0038] See appendix Figure 1 -Appendix Figure 7 and attached Figure 10 -Appendix Figure 15 The first buoyancy plug 1 includes a first float 11, a first sliding column 12, and a first plug block 13; the first sliding column 12 is slidably installed in the guide hole 301, and there is a liquid gap 120 between the first sliding column 12 and the guide hole 301 for water to pass through; the first plug block 13 is installed at the bottom of the first sliding column 12 and placed in the receiving cavity 30; the first float 11 is installed at the top of the first sliding column 12 and placed in the outside, and the first float 11 is made of a material with a density lower than that of water; wherein, when the first plug block 13 opens the guide hole 301, the receiving cavity 30 is connected to the outside through the liquid gap 120.

[0039] As attached Figure 1 -Appendix Figure 7 As shown, the working principle of the first buoyancy plug 1 structure in Embodiment 1 is as follows: When the water level in the tank rises to the water passage range, the first float 11 floats up synchronously and drives the first plug block 13 to gradually approach the guide hole 301, and at this time the liquid gap 120 can allow water to pass normally; when the water level in the tank rises to the water cut-off level, the first float 11 continues to float and drives the first plug block 13 to close the guide hole 301; the mixed liquid in the containment cavity 30 can only be discharged when the guide hole 301 and the air pressure hole 302 are opened at the same time. Therefore, only when the water level in the tank drops to the water passage range and is lower than the air pressure hole 302, the second buoyancy plug 2 falls under the action of gravity and opens the air pressure hole 302 to maintain the air pressure balance inside and outside the containment cavity 30, and the first buoyancy plug 1 falls under the action of gravity to drive the first plug block 13 to open the guide hole 301, can the containment cavity 30 be connected to the outside through the liquid gap 120 to realize liquid exchange.

[0040] As attached Figure 10 -Appendix Figure 15As shown, the working principle of this first buoyancy plug 1 structure in Embodiment 2 is as follows: When the water level in the tank rises to the cut-off level, the first float 11 rises simultaneously and drives the first plug block 13 to close the guide hole 301 first, and at this time the receiving cavity 30 is not full of mixed liquid; when the water level in the tank continues to rise to the air pressure hole 302, the water inside the tank will flow into the receiving cavity 30 through the air pressure hole 302 and expel the air inside the receiving cavity 30. After the receiving cavity 30 is full of mixed liquid, the water level in the tank rises above the air pressure hole 302. The second buoyancy plug 2 floats up completely and closes the air pressure port to prevent the mixture in the containment cavity 30 from escaping into the water tank through the air pressure hole 302. When the water level in the tank drops below the air pressure hole 302 and enters the water passage zone, the second buoyancy plug 2 falls under the action of gravity and opens the air pressure hole 302. The first buoyancy plug 1 falls under the action of gravity to drive the first sliding column 12 to move down and make the first plug block 13 open the guide hole 301. At this time, the containment cavity 30 can be connected to the outside through the liquid gap 120 to realize liquid exchange.

[0041] In summary, by relying solely on the buoyancy of the first float 11 to drive the movement of the first sliding column 12 and the first stopper 13, the first buoyancy plug 1 can accurately follow the movement of the liquid surface. This allows for precise control of the timing of the first stopper 13 closing the guide hole 301 during water tank filling and draining processes. It also prevents the first stopper 13 from directly closing the guide hole 301 when the liquid surface in the tank is level with it, or prevents the first stopper 13 from failing to close the guide hole 301 when the liquid surface in the tank submerges the first float 11. Furthermore, the first buoyancy plug 1, composed of the first sliding column 12, the first float 11, and the first stopper 13, has a simple overall structure and low cost. It does not occupy excessive internal space in the bottle body 3, allowing the bottle body 3 to free up more space in the receiving cavity 30 to hold cleaning agents, thereby extending the overall service life.

[0042] Further details are attached. Figure 9 As shown, in another embodiment, the first float 11, the first slide 12 and the first plug 13 are all made of a material with a density lower than that of water and are integrally formed, and the distance between the guide hole 301 and the air pressure hole 302 does not exceed the length of the first slide 12.

[0043] Specifically, the above structural design facilitates the processing and production of the first buoyancy plug 1 and enables the first buoyancy plug 1 to float up by its own overall buoyancy. Under this design, the water does not need to contact the first float ball 11, but only needs to be submerged to a specific position of the first sliding column 12 to drive the first buoyancy plug 1 to float up to the appropriate position and drive the first plug block 13 to close the guide hole 301.

[0044] When the distance between the guide hole 301 and the air pressure hole 302 is less than the length of the first sliding column 12, the overall weight or volume of the first buoyancy plug 1 can be adjusted to ensure that the water does not need to completely submerge the first sliding column 12 to drive the first plug block 13 to close the guide hole 301; when the distance between the guide hole 301 and the air pressure hole 302 is equal to the length of the first sliding column 12, the overall weight or volume of the first buoyancy plug 1 can be adjusted to ensure that the water just completely submerges the first sliding column 12 to drive the first plug block 13 to close the guide hole 301.

[0045] Furthermore, users can alter the buoyancy of the first buoyancy plug 1 in water by adjusting its overall weight or volume. For example, increasing the overall weight of the first buoyancy plug 1 will cause the first sliding column 12 to be more submerged in water, while decreasing its weight will cause the first sliding column 12 to be more exposed above the water surface. By properly controlling the buoyancy of the first buoyancy plug, it is possible to prevent the first plug block 13 from directly sealing the guide hole 301 when the water level in the tank is level with the guide hole 301, or to prevent the first plug block 13 from failing to close the guide hole 301 when the water level in the tank submerges the first float ball 11. See appendix Figure 1 -Appendix Figure 7 and attached Figure 10 -Appendix Figure 15 The second buoyancy plug 2 includes a second float 21, a second sliding column 22, and a second plug block 23. The second sliding column 22 is slidably installed in the air pressure hole 302, and there is a gas gap 220 between the second sliding column 22 and the air pressure hole 302 for gas passage. The second plug block 23 is installed at the bottom of the second sliding column 22 and placed in the receiving cavity 30. The second float 21 is installed at the top of the second sliding column 22 and placed in the outside, and the second float 21 is made of a material with a density lower than that of water. When the second plug block 23 opens the air pressure hole 302, the receiving cavity 30 is connected to the outside through the gas gap 220.

[0046] As attached Figure 1 -Appendix Figure 7 As shown, the working principle of the structure of the second buoyancy plug 2 in Embodiment 1 is as follows: when the water level in the tank rises to the water cut-off level or above the air pressure hole 302, the second buoyancy plug 2 floats up under the buoyancy of the second float ball 21, thereby driving the second sliding column 22 to move upward and causing the second plug block 23 to close the air pressure hole 302; when the water level in the tank drops below the air pressure hole 302, the second buoyancy plug 2 falls down under the action of gravity, thereby driving the second sliding column 22 to move downward and causing the second plug block 23 to open the air pressure hole 302. At this time, the receiving cavity 30 is connected to the outside through the gas gap 220, ensuring that the first buoyancy plug 1 can be opened normally and liquid exchange can be carried out through the guide hole 301.

[0047] As attached Figure 10 -Appendix Figure 15As shown, the working principle of the structure of the second buoyancy plug 2 in Embodiment 2 is as follows: when the water level in the tank rises above the air pressure hole 302, the second buoyancy plug 2 floats up under the buoyancy of the second float ball 21, thereby driving the second plug block 23 to close the air pressure hole 302; when the water level in the tank drops below the air pressure hole 302, the second buoyancy plug 2 falls down under the action of gravity, thereby driving the second sliding column 22 to move down, and causing the second plug block 23 to open the air pressure hole 302. At this time, the receiving cavity 30 is connected to the outside through the gas gap 220, ensuring that the first buoyancy plug 1 can be opened normally and exchange liquid through the guide hole 301.

[0048] In summary, by relying solely on the buoyancy of the second float 21 to drive the movement of the second slide 22 and the second stopper 23, the second buoyancy plug 2 can precisely follow the movement of the liquid surface. This allows for accurate control of the timing of the second stopper 23 closing the pressure hole 302 during the water tank's filling and draining processes. This avoids the second stopper 23 failing to close the pressure hole 302 when the water tank surface is submerged in the second float 21, thus preventing the mixture from escaping. It also prevents the second stopper 23 from failing to open the pressure hole 302 in time when the water tank surface is below the pressure hole 302, thus maintaining the balance inside and outside the containing cavity 30. Furthermore, the overall structure of the second buoyancy plug 2, composed of the second slide 22, the second float 21, and the second stopper 23, is simple and inexpensive. It does not occupy excessive internal space in the bottle body 3, allowing the bottle body 3 to free up more space in the containing cavity 30 to hold cleaning agents, thereby extending the overall service life.

[0049] Further details are attached. Figure 16 As shown, the second float 21, the second sliding column 22, and the second stopper 23 are all made of a material with a density lower than that of water and are integrally molded.

[0050] Specifically, the above structural design facilitates the processing and production of the second buoyancy plug 2, and also allows the second buoyancy plug 2 to float up by its own overall buoyancy. Under this design, the water does not need to contact the second float ball 21, but only needs to be submerged to a specific position of the second sliding column 22 to drive the second buoyancy plug 2 to float up to the appropriate position and drive the second plug block 23 to close the guide hole 301.

[0051] The overall weight or volume of the second buoyancy plug 2 can be adjusted to change its floating state in the water so that when the water is submerged to a specific position of the second sliding column 22, the second plug block 23 closes the air pressure hole 302. Relevant cases have been mentioned above. For details, please refer to the structural analysis of the first buoyancy plug 1 above. It will not be repeated here.

[0052] It should be noted that there are many types of materials with a density lower than that of water that have buoyancy, such as EVA materials, foam plastics, and rubber materials. This utility model does not limit these types.

[0053] See appendix Figure 4 Appendix Figure 12 Appendix Figure 18 and attached Figure 19 The first float 11 is provided with a first partition 111, which can abut against the bottle body 3 and form a first opening 1110 for connecting the liquid gap 120 when the first float 11 falls; the second float 21 is provided with a second partition 211, which can abut against the bottle body 3 and form a second opening 2110 for connecting the gas gap 220 when the second float 21 falls.

[0054] Specifically, the design of the first partition 111 and the second partition 211 can prevent the first float 11 and the second float 21 from closing the liquid gap 120 and the gas gap 220 respectively after they fall, ensuring that the receiving cavity 30 can be connected to the outside more smoothly to maintain the internal and external air pressure balance and ensure smooth liquid exchange.

[0055] See appendix Figure 18 -Appendix Figure 19 The first partition 111 is provided with a plurality of parallel circular arrays at the bottom of the first float 11, and the plurality of first partitions 111 form a first passage 1110 between each pair; the second partition 211 is provided with a plurality of parallel circular arrays at the bottom of the second float 21, and the plurality of second partitions 211 form a second passage 2110 between each pair.

[0056] Specifically, this design allows multiple first ports 1110 to be spaced apart around the circumference of the guide hole 301 and simultaneously connected to the liquid gap 120, and multiple second ports 2110 to be spaced apart around the circumference of the air pressure hole 302 and simultaneously connected to the gas gap 220, thereby ensuring a more stable gas flow in the receiving cavity 30; at the same time, the design of multiple first partitions 111 and second partitions 211 can also make the contact between the first float 11 and the second float 21 and the bottle body 3 more stable.

[0057] For ease of understanding, this utility model takes the cross-shaped design of multiple first partitions 111 and multiple second partitions 211 as an example. The four first openings 1110 formed by the cross-shaped first partitions 111 are of the same size, and the four second openings 2110 formed by the cross-shaped second partitions 211 are of the same size. This ensures stable ventilation in the accommodating cavity 30 and provides the same support at the bottom sides of the first float 11 and the second float 21, so that the first float 11 and the second float 21 are balanced by forces. This effectively prevents the first float 11 and the second float 21 from shifting and blocking the liquid gap 120 and the gas gap 220.

[0058] Furthermore, the contact surface between the bottle body 3 and the partition can be an arc surface, a plane, etc. In order to make the first partition 111 and the second partition 211 more stably placed on the bottle body 3, in this utility model, the contact surface between the bottle body 3 and the first partition 111 and the second partition 211 is preferably a plane.

[0059] See appendix Figure 4 Appendix Figure 12 Appendix Figure 18 and attached Figure 19 The first plug 13 and the second plug 23 are both hemispherical, and the diameter of the first plug 13 is larger than the diameter of the guide hole 301, and the diameter of the second plug 23 is larger than the diameter of the air pressure hole 302.

[0060] Specifically, during actual use, the first float 11 and the second float 21 shift, causing the first sliding column 12 and the second sliding column 22 to shift within the guide hole 301 and the air pressure hole 302, respectively. The above design can ensure that the first plug 13 and the second plug 23 can still block the guide hole 301 and the air pressure hole 302 normally even when the first float 11 and the second float 21 shift, effectively preventing the mixture from escaping.

[0061] See appendix Figure 17 The bottle body 3 includes a detachable bottle body 31 and a bottle cap 32. The bottle body 31 and the bottle cap 32 enclose a receiving cavity 30. The flow guide hole 301 and the air pressure hole 302 are both provided on the bottle cap 32.

[0062] Specifically, the bottle body 31 and the bottle cap 32 are detachably connected, allowing the bottle body 3 to be assembled and disassembled for easy cleaning of the cavity 30 and replacement of the cleaning agent; the positions of the flow guide hole 301 and the air pressure hole 302 can be set according to actual needs. For example, the flow guide hole 301 and the air pressure hole 302 are generally set on the bottle cap 32 to facilitate processing and production, while allowing the internal space of the bottle body 31 to be fully used for filling the cleaning agent.

[0063] Furthermore, the bottle body 31 and the bottle cap 32 can be disassembled by means of threaded connection, snap-fit, adhesive or other structural methods. Since there are many related structural methods, this utility model does not limit them. For ease of understanding, in this embodiment, the bottle body 31 and the bottle cap 32 can be connected by thread.

[0064] See appendix Figure 1 Appendix Figure 2 and attached Figure 17 The bottle cap 32 has a recessed cavity 321, and the flow guide hole 301 is set on the bottom wall of the recessed cavity 321. When the first buoyancy plug 1 is not floating, it is placed in the recessed cavity 321. This design can increase the overall aesthetics and at the same time provide space for the first buoyancy plug 1 to move, avoiding the first buoyancy plug 1 being exposed.

[0065] See appendix Figure 4 -Appendix Figure 6 and attached Figure 12 -Appendix Figure 14 The centerlines of both the pressure port 302 and the guide port 301 are designed to be vertical so that the gas flow direction and the liquid flow direction are kept on the same plane. This design can ensure more stable liquid exchange.

[0066] See appendix Figure 4 -Appendix Figure 6 Appendix Figure 12 -Appendix Figure 14 and attached Figure 17 The bottle cap 32 has a pressure rod 322 inside, which extends into the bottle body 31 and presses against the cleaning agent; this design can fix the cleaning agent and prevent it from shaking freely in the receiving cavity 30.

[0067] See appendix Figure 2 The bottle cap 32 has a connecting block 323 on its top, and the connecting block 323 has a rope hole 3230 for installing a hanging rope (not shown in the figure).

[0068] Specifically, one end of the hanging rope is installed on the connecting block 323, and the other end is placed outside the water tank, making it convenient for users to place the bottle 3 into or take it out of the water tank using the hanging rope, avoiding users from putting their hands into the water tank and getting their hands dirty, thus improving the user experience.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slow-release cleaning device for a toilet tank, comprising a bottle body, wherein the bottle body has an internal cavity for holding cleaning agent, and the side wall of the cavity has a guide hole and an air pressure hole for connecting to the outside, and the air pressure hole is located above the guide hole; characterized in that, Also includes: A first buoyancy plug is movably installed at the flow guide hole, and the first buoyancy plug can open or close the flow guide hole as the water tank liquid level floats. The second buoyancy plug is movably installed at the air pressure hole, and the second buoyancy plug can open or close the air pressure hole as the water level in the tank floats. The guide hole and the air pressure hole form a water cut-off level and a water flow range from top to bottom, and the water cut-off level is located at a position not lower than the air pressure hole. When the water level in the tank is in the water flow range, water enters the receiving cavity through the guide hole. When the water level in the tank rises to the water cut-off level, the receiving cavity is filled with water. The first buoyancy plug will float up and close the guide hole, and the second buoyancy plug will float up and close the air pressure hole.

2. The slow-release cleaning device for toilet tanks according to claim 1, characterized in that, When the water level is below the air pressure hole, and the water level in the tank rises to the water level and causes the first buoyancy plug to float up and close the flow guide hole, the container cavity is not full of water, and at this time the overall weight of the bottle containing the detergent and the mixture is greater than its own buoyancy; when the water level in the tank rises above the air pressure hole, the second buoyancy plug floats up and closes the air pressure hole.

3. A slow-release cleaning device for a toilet tank according to any one of claims 1 or 2, characterized in that, The first buoyancy plug includes a first float, a first sliding column, and a first plug block; the first sliding column is slidably installed in the flow guide hole, and there is a liquid gap between the first sliding column and the flow guide hole for water to pass through; the first plug block is installed at the bottom of the first sliding column and placed in the receiving cavity, the first float is installed at the top of the first sliding column and placed in the outside, and the first float is made of a material with a density lower than that of water; wherein, when the first plug block opens the flow guide hole, the receiving cavity is connected to the outside through the liquid gap.

4. A slow-release cleaning device for a toilet tank according to claim 3, characterized in that, The first float, the first sliding column, and the first plug are all made of a material with a density lower than that of water and are integrally molded.

5. A slow-release cleaning device for a toilet tank according to claim 3, characterized in that, The second buoyancy plug includes a second float, a second sliding column, and a second plug block; the second sliding column is slidably installed in the air pressure hole, and there is a gas gap between the second sliding column and the air pressure hole for gas passage; the second plug block is installed at the bottom of the second sliding column and placed in the receiving cavity; the second float is installed at the top of the second sliding column and placed in the outside, and the second float is made of a material with a density lower than that of water; wherein, when the second buoyancy plug opens the air pressure hole, the receiving cavity is connected to the outside through the gas gap.

6. A slow-release cleaning device for a toilet tank according to claim 5, characterized in that, The second float, the second slide, and the second stopper are all made of a material with a density lower than that of water and are integrally molded.

7. A slow-release cleaning device for a toilet tank according to claim 5, characterized in that, The first float is provided with a first partition, which can abut against the bottle body and form a first opening to connect the liquid gap as the first float falls; the second float is provided with a second partition, which can abut against the bottle body and form a second opening to connect the gas gap as the second float falls.

8. A slow-release cleaning device for a toilet tank according to claim 5, characterized in that, Both the first plug and the second plug are hemispherical, and the diameter of the first plug is larger than the diameter of the guide hole, while the diameter of the second plug is larger than the diameter of the air pressure hole.

9. A slow-release cleaning device for a toilet tank according to claim 1, characterized in that, The bottle body includes a detachable bottle body and a bottle cap, which together form the receiving cavity. The flow guide hole and the air pressure hole are both located on the bottle cap.

10. A slow-release cleaning device for a toilet tank according to claim 9, characterized in that, The bottle cap has a pressure rod inside, which extends into the bottle body and presses against the cleaning agent.

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