Flow limiting assembly, water tank assembly and cleaning machine

Abstract

The utility model discloses a flow limiting assembly, a water tank assembly and a cleaning machine. The flow limiting assembly comprises a shell and a flow limiting piece. The shell is provided with a water passing channel and a water outlet communicating with the water passing channel. The flow limiting piece is provided with a rotating fulcrum, a balance weight part and a flow limiting plate, the balance weight part and the flow limiting plate are located on the two sides of the rotating fulcrum, and the flow limiting piece is rotationally arranged on the shell through the rotating fulcrum so as to open or close the water outlet. The counterweight part is configured to provide a first acting force for continuously closing the water outlet to the flow limiting plate under the action of gravity so as to limit one-way conduction of water flow from the water passing channel to the outside of the water outlet; the flow limiting plate is used for opening the water outlet when the second acting force of water flow in the water passing channel on the flow limiting plate is larger than the first acting force. The flow limiting assembly can supply water in a one-way mode, and is simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a flow limiting component, a water tank component, and a cleaning machine. Background Technology

[0002] In cleaning equipment, the water tank is used to store water. The water inlet of the tank is connected to the external water system. When the water flow in the tank is unstable or there is too much foam, the water in the tank will overflow from the inlet, which can cause the equipment to leak electricity and increase the risk of electric shock. The existing treatment method usually uses an electronic check valve. Electronic check valves require external circuitry, have a complex structure, and are expensive to manufacture. Utility Model Content

[0003] The main purpose of this invention is to provide a flow limiting component, a water tank component, and a cleaning machine. The flow limiting component is capable of unidirectional water supply, has a simple structure, and low manufacturing cost.

[0004] To achieve the above objectives, the current limiting component proposed in this utility model includes:

[0005] The housing has a water passage and a water outlet communicating with the water passage;

[0006] A flow restrictor has a pivot point and counterweights and a flow restrictor plate located on both sides of the pivot point. The flow restrictor is rotatably mounted on the housing via the pivot point to open or close the outlet. The counterweights are configured to provide a first force to the flow restrictor plate under gravity to continuously close the outlet, thereby restricting the water flow from the water passage to the outlet in a one-way direction. The flow restrictor plate is used to open the outlet when the second force of the water flow on the flow restrictor plate in the water passage is greater than the first force.

[0007] In one embodiment, the flow limiting plate is disposed on the side of the counterweight facing the outlet, and the torque generated by the gravity of the counterweight is greater than the torque generated by the gravity of the flow limiting plate.

[0008] In one embodiment, a line along the water inlet direction of the water passage and passing through the pivot point is defined as the centerline. When the flow restrictor closes the outlet, the geometric center of the counterweight and the geometric center of the flow restrictor are located on opposite sides of the centerline, and the weight of the counterweight is greater than the weight of the flow restrictor.

[0009] In one embodiment, the flow limiting element further includes a rotating column having the rotating fulcrum, the rotating column being connected to the counterweight and rotatably disposed on the outer peripheral wall of the housing, and the flow limiting plate being connected to the rotating column and / or the counterweight.

[0010] In one embodiment, the rotating column is disposed at the upper end of the counterweight, and the flow limiting plate is disposed on the side wall of the counterweight facing the outlet and spaced apart from the rotating column, with the flow limiting plate located in the upper half of the counterweight;

[0011] And / or, the counterweight is provided with an upward-facing groove.

[0012] In one embodiment, the shell includes a shell body and a buffer enclosure. The buffer enclosure is located at one end of the shell body near the outlet and encloses the shell body to form the water passage. The inner wall of the buffer enclosure is provided with the buffer surface. An avoidance space is formed between the outer wall of the buffer enclosure and the shell body. Part of the flow limiting element is located in the avoidance space.

[0013] In one embodiment, the buffer enclosure includes a buffer plate and a guide plate. The buffer surface is disposed on the buffer plate, and the guide plate is disposed at one end of the buffer plate near the water outlet. The guide plate and the shell body enclose the water outlet. The guide plate extends along the water inlet direction of the water passage.

[0014] And / or, the housing has a water inlet communicating with the water passage, and the opening area of ​​the water inlet is larger than the opening area of ​​the water outlet;

[0015] And / or, the buffer surface extends along the water inlet direction of the water passage and is inclined toward the outlet.

[0016] In one embodiment, the flow limiting component further includes a magnetic suction element and a magnetic suction accessory that cooperates with the magnetic suction element. One of the magnetic suction element and the magnetic suction accessory is disposed on the flow limiting plate, and the other is disposed on the housing and located at the water outlet.

[0017] In one embodiment, the flow limiting plate has a first mounting portion at its edge away from the counterweight, and the water outlet of the housing has a second mounting portion at its edge away from the counterweight. One of the magnetic suction element and the magnetic suction accessory is located in the first mounting portion, and the other is located in the second mounting portion.

[0018] And / or, the area of ​​the flow restrictor is greater than the cross-sectional area of ​​the outlet.

[0019] This utility model also proposes a water tank assembly, which includes a tank body and a flow limiting component as described above. The tank body has a receiving cavity and a water inlet communicating with the receiving cavity. The housing is disposed on the tank body and located at the water inlet. The water outlet of the housing is communicating with the receiving cavity.

[0020] In one embodiment, the outlet of the housing and / or the flow restrictor are disposed within the receiving cavity and are located below the top wall of the receiving cavity at the inlet hole;

[0021] And / or, the flow limiting component further includes a seal disposed at the water inlet to seal the gap between the housing and the box body;

[0022] And / or, one of the housing and the box body is provided with a positioning part, and the other is provided with a mating part adapted to the positioning part, and the housing is positioned and installed with the box body through the positioning part;

[0023] And / or, the water inlet is located at the top of the tank body, and the water passage extends in the water tank assembly in a top-to-bottom direction.

[0024] This utility model also proposes a cleaning machine, which includes the water tank assembly described above.

[0025] The flow-limiting component of this utility model includes a housing and a flow-limiting element. The housing has a water passage and an outlet. The flow-limiting element has a fulcrum, a counterweight on both sides of the fulcrum, and a flow-limiting plate. The flow-limiting element is rotatably mounted on the housing via the fulcrum to open or close the outlet. The counterweight is configured to provide a first force to the flow-limiting plate under gravity to continuously close the outlet, thereby restricting the water flow from the water passage to the outlet in a one-way direction. The flow-limiting plate is used to open the outlet when the second force of the water flow on the flow-limiting plate in the water passage is greater than the first force. With this configuration, the flow-limiting component of this solution does not involve electrical components; one-way water supply can be achieved simply by the cooperation of the flow-limiting element and the housing. Because the counterweight and the flow-limiting plate are located on both sides of the pivot point to form a lever structure, the counterweight can rotate around the pivot point under the action of gravity. The flow-limiting plate rotates synchronously with the counterweight. The counterweight is configured to provide a first force to the flow-limiting plate to continuously close the outlet under the action of gravity. When there is no water or the water flow is small in the water passage, the first force causes the flow-limiting plate to continuously close the outlet. When the water flow in the water passage is large, the water pressure pushes the flow-limiting plate to rotate, causing the flow-limiting plate to open the outlet. Because the counterweight continuously provides a first force to the flow-limiting plate to close the outlet under the action of gravity, the flow-limiting plate will continue to close the outlet when the water pressure disappears. The flow-limiting component is applied to the water tank component. The water in the tank cannot generate the force to make the flow-limiting component rotate and open the outlet. The water pressure in the tank will also provide an upward force to the flow-limiting plate, further preventing the flow-limiting plate from opening the outlet, thus preventing the water in the tank from overflowing from the outlet. Therefore, this utility model provides a flow limiting component that can supply water in one direction and has a simple structure. This flow limiting component does not involve electrical components and has low manufacturing cost. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of an embodiment of the water tank assembly provided by this utility model;

[0028] Figure 2 for Figure 1 A sectional view of the structure in the middle;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 A schematic diagram of the structure of an embodiment of the current limiting component provided by this utility model;

[0031] Figure 5 for Figure 4 A schematic diagram of the decomposed structure in the image;

[0032] Figure 6 for Figure 4 A sectional view of the structure in the middle;

[0033] Figure 7 for Figure 4 A schematic diagram showing the flow restrictor opening the outlet.

[0034] Figure 8 for Figure 5 A schematic diagram of the shell structure in the middle;

[0035] Figure 9 for Figure 5 A schematic diagram of the current-limiting component in the diagram.

[0036] Explanation of icon numbers:

[0037] 10. Current limiting component;

[0038] 100. Shell; 110. Water passage; 111. Buffer surface; 120. Outlet; 130. Inlet; 140. Shell body; 150. Buffer enclosure; 151. Buffer plate; 152. Guide plate; 160. Clearance space; 170. Mounting plate; 171. Mounting hole;

[0039] 200. Flow limiting component; 210. Counterweight; 211. Groove; 220. Flow limiting plate; 230. Rotating column; 231. Rotation fulcrum;

[0040] 300. Magnetic components; 400. Magnetic accessories; 500. Sealing components;

[0041] 20. Water tank assembly; 21. Tank body; 22. Receiving cavity.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] This utility model proposes a flow limiting component, a water tank assembly including the flow limiting component, and a cleaning machine including the water tank assembly.

[0047] Please see Figures 4 to 9In one embodiment of this utility model, the flow limiting component 10 includes a housing 100 and a flow limiting member 200. The housing 100 has a water passage 110 and an outlet 120 communicating with the water passage 110. The flow limiting member 200 has a rotation fulcrum 231 and a counterweight 210 and a flow limiting plate 220 located on both sides of the rotation fulcrum 231. The flow limiting member 200 is rotatably mounted on the housing 100 via the rotation fulcrum 231 to open or close the outlet 120. The counterweight 210 is configured to provide a first force to the flow limiting plate 220 under the action of gravity to continuously close the outlet 120, thereby restricting the water flow from the water passage 110 to the outlet 120 in a unidirectional manner. The flow limiting plate 220 is used to open the outlet 120 when the second force of the water flow in the water passage 110 on the flow limiting plate 220 is greater than the first force.

[0048] It is understood that the flow limiting component 10 is used for unidirectional water supply. The flow limiting component 10 can be applied not only to cleaning machines but also to other equipment that requires unidirectional water supply, and is not limited here. In this solution, the flow limiting component 10 is applied to the water tank assembly 20, which is applied to the cleaning machine. The flow limiting component 10 includes a housing 100, and the water tank assembly 20 includes a tank body 21. The housing 100 can be installed at the water inlet of the tank body 21. Water flowing into the housing 100 can only flow unidirectionally into the tank body 21 along the housing 100 to prevent water in the tank body 21 from overflowing from the water inlet.

[0049] Furthermore, the shape of the housing 100 is not limited; for example, the housing 100 can be cylindrical or square. The flow restrictor 200 has a pivot point 231, a counterweight 210, and a flow restrictor plate 220. The counterweight 210 can rotate around the pivot point 231 under the action of gravity and drive the flow restrictor plate 220 to rotate synchronously. The counterweight 210 and the flow restrictor plate 220 are located on both sides of the pivot point 231 to form a lever structure. When the counterweight 210 drives the flow restrictor plate 220 to rotate to close the outlet 120, the weight of the counterweight 210 can continuously provide a first force to the flow restrictor plate 220 under the action of the lever structure, so that the flow restrictor plate 220 continuously closes the outlet 120. Only when the flow restrictor plate 220 is impacted by the water flow in the water passage 110 will the flow restrictor plate 220 open the outlet 120.

[0050] The flow-limiting component 10 of this utility model includes a housing 100 and a flow-limiting element 200. The housing 100 has a water passage 110 and a water outlet 120. The flow-limiting element 200 has a rotation fulcrum 231 and counterweights 210 and a flow-limiting plate 220 located on both sides of the rotation fulcrum 231. The flow-limiting element 200 is rotatably mounted on the housing 100 via the rotation fulcrum 231 to open or close the water outlet 120. The counterweights 210 are configured to move towards the flow-limiting plate under the action of gravity. The flow plate 220 provides a first force to continuously close the outlet 120, thereby restricting the water flow from the water passage 110 to the outlet 120 in a one-way manner. The flow restrictor 220 is used to open the outlet 120 when the second force of the water flow on the flow restrictor 220 in the water passage 110 is greater than the first force. With this configuration, the flow restrictor component 10 of this solution does not involve electrical components, and only the flow restrictor 200 and the housing 100 are needed to achieve one-way water supply. Because the counterweight 210 and the flow-limiting plate 220 are located on both sides of the rotation fulcrum 231 to form a lever structure, the counterweight 210 can rotate around the rotation fulcrum 231 under the action of gravity. The flow-limiting plate 220 rotates synchronously with the rotation of the counterweight 210. The counterweight 210 is configured to provide a first force to the flow-limiting plate 220 to continuously close the outlet 120 under the action of gravity. When there is no water in the water passage 110 or the water flow is small, the first force causes the flow-limiting plate 220 to continuously close the outlet 120. When the water flow in the water passage 110 is large, the water pressure pushes the flow-limiting plate 220 to rotate. The movement causes the flow-limiting plate 220 to open the outlet 120. Because the counterweight 210 continuously provides a first force to the flow-limiting plate 220 to close the outlet 120 under gravity, the flow-limiting plate 220 will continue to close the outlet 120 when the water pressure disappears. The flow-limiting component 10 is applied to the water tank assembly 20. The water in the tank 21 cannot generate the force to make the flow-limiting component 200 rotate and open the outlet 120. The water pressure in the tank 21 also provides an upward force to the flow-limiting plate 220, further preventing the flow-limiting plate 220 from opening the outlet 120, thus preventing water in the tank 21 from overflowing from the outlet 120. Therefore, this utility model provides a flow-limiting component 10 that can supply water in one direction and has a simple structure. This flow-limiting component 10 does not involve electrical components and has low manufacturing costs.

[0051] In one embodiment, the flow limiting plate 220 is disposed on the side of the counterweight 210 facing the outlet 120, and the torque generated by the gravity of the counterweight 210 is greater than the torque generated by the gravity of the flow limiting plate 220.

[0052] It is understandable that the length between the center of gravity of the counterweight 210 and the pivot point 231 is the axis of rotation of the counterweight 210. The equivalent gravity of the counterweight 210 at its center of gravity is perpendicular to the axis of rotation of the counterweight 210. The product of the length of the axis of rotation of the counterweight 210 and the equivalent gravity of the counterweight 210 is the torque of the counterweight 210 about the pivot point 231. Figure 6 As shown, L1 is the rotation axis of the counterweight 210, F1 is the equivalent gravity of the counterweight 210, and the product of L1 and F1 is the torque generated by the gravity of the counterweight 210. The length between the center of gravity of the flow restrictor 220 and the pivot point 231 is the rotation axis of the flow restrictor 220. The equivalent gravity of the flow restrictor 220 at its center of gravity is perpendicular to the rotation axis of the flow restrictor 220. The product of the length of the rotation axis of the flow restrictor 220 and the equivalent gravity of the flow restrictor 220 is the torque of the gravity of the flow restrictor 220 about the pivot point 231. Figure 6 As shown, L2 is the rotation axis of the flow restrictor 220, and F2 is the equivalent gravity of the flow restrictor 220. The product of L2 and F2 is the torque generated by the gravity of the flow restrictor 220. The torque generated by the gravity of the counterweight 210 is greater than the torque generated by the gravity of the flow restrictor 220, i.e., L1*F1 > L2*F2. With this configuration, the rotation effect of the counterweight 210 is greater than the rotation effect of the flow restrictor 220. The counterweight 210 can provide the flow restrictor 220 with a first force to continuously close the outlet 120 under the action of gravity. When the flow restrictor 220 is not impacted by the water flow in the water passage 110 or the impact force is small, the flow restrictor 200 can restrict the water flow from the water passage 110 to the outlet 120 in a one-way direction.

[0053] In one embodiment, the line along the water inlet direction of the water passage 110 and passing through the rotation fulcrum 231 is defined as the centerline L. When the flow restrictor 200 closes the outlet 120, the geometric center of the counterweight 210 and the geometric center of the flow restrictor 220 are respectively located on both sides of the centerline L, and the weight of the counterweight 210 is greater than the weight of the flow restrictor 220.

[0054] It is understandable that, such as Figure 6 and Figure 7As shown, the centerline L extends along the water inlet direction of the water passage 110 and passes through the rotation fulcrum 231. In this design, the geometric center of the counterweight 210 is its center of gravity, and the geometric center of the flow-limiting plate 220 is its weight. The geometric centers of the counterweight 210 and the flow-limiting plate 220 are located on opposite sides of the centerline L, thus forming a lever structure under gravity between the counterweight 210 and the flow-limiting plate 220. Furthermore, the weight of the counterweight 210 is greater than the weight of the flow-limiting plate 220, causing the counterweight 210 to... The torque generated by gravity 0 is greater than the torque generated by gravity of flow restrictor 220. The counterweight 210 can drive flow restrictor 220 to rotate. The rotation effect of counterweight 210 is greater than the rotation effect of flow restrictor 220. That is, counterweight 210 can provide the first force to continuously close the outlet 120 under the action of gravity. When flow restrictor 220 is not impacted by water flow in water passage 110 or the impact force is small, flow restrictor 200 can restrict water flow from water passage 110 to outlet 120 in a one-way direction.

[0055] Please see Figure 4 , Figure 5 , Figure 8 and Figure 9 In one embodiment, the flow limiting member 200 further includes a rotating column 230, the rotating column 230 having the rotating fulcrum 231, the rotating column 230 being connected to the counterweight 210 and rotatably disposed on the outer peripheral wall of the housing 100, and the flow limiting plate 220 being connected to the rotating column 230 and / or the counterweight 210.

[0056] It is understandable that by setting the rotating column 230, it is convenient to rotatably connect the flow restrictor 200 to the housing 100. A mounting plate 170 can be provided on the outer wall of the housing 100, and the mounting plate 170 has mounting holes 171. The rotating column 230 is rotatably disposed within the mounting holes 171, thus facilitating the installation of the flow restrictor 200. Furthermore, the rotating column 230 is located above the outlet 120 to avoid the rotating column 230 occupying the space below the outlet 120 and increasing the height of the flow restrictor 10, thus making full use of the space above the outlet 120, which is beneficial for the miniaturization of the flow restrictor 10. The specific installation position of the flow restrictor 220 is not limited, as long as the flow restrictor 220 is located on the side of the counterweight 210 facing the outlet 120, and the flow restrictor 220 can open or close the outlet 120 with the rotation of the counterweight 210.

[0057] In one embodiment, the rotating column 230 is disposed at the upper end of the counterweight 210, and the flow limiting plate 220 is disposed on the side wall of the counterweight 210 facing the outlet 120 and spaced apart from the rotating column 230. The flow limiting plate 220 is located in the upper half of the counterweight 210. It is understandable that the greater the distance between the flow restrictor 220 and the rotating column 230, the lower the flow restrictor 220 is on the counterweight 210, the greater the torque generated by the gravity of the flow restrictor 220, and the smaller the difference between the torque generated by the gravity of the counterweight 210 and the torque generated by the gravity of the flow restrictor 220. This results in a less pronounced tendency for the flow restrictor 220 to close the outlet 120, which is detrimental to the reverse flow obstruction effect of the flow restrictor 220. Conversely, the closer the distance between the flow restrictor 220 and the rotating column 230, the higher the flow restrictor 220 is on the counterweight 210, the smaller the torque generated by the gravity of the flow restrictor 220, and the greater the difference between the torque generated by the gravity of the counterweight 210 and the torque generated by the gravity of the flow restrictor 220. This results in a more pronounced tendency for the flow restrictor 220 to close the outlet 120, and a better reverse flow obstruction effect of the flow restrictor 220. Therefore, in this design, the flow limiting plate 220 is placed in the upper half of the counterweight part 210, so that the flow limiting plate 220 has a better reverse flow blocking effect.

[0058] In one embodiment, in order to improve the smoothness of water discharge from the water passage 110 to the outlet 120 and to ensure the reverse flow blocking effect of the flow limiting plate 220, optionally, the rotating column 230 is disposed at the top of the counterweight 210, and the flow limiting plate 220 is located in the upper half of the counterweight 210 and is spaced apart from the rotating column 230.

[0059] Please see Figure 3 and Figure 9 In one embodiment, the counterweight 210 is provided with an upward-facing groove 211. It is understood that by providing an upward-facing groove 211, the material usage of the counterweight 210 can be reduced, and it also facilitates the processing and shaping of the counterweight. When the counterweight 210 is located inside the housing 21, if the water level in the housing 21 is higher than the counterweight 210, water will also flow into the groove 211, increasing the weight of the counterweight 210, thereby further improving the rotation effect of the counterweight 210 and strengthening the reverse flow resistance capability of the flow-limiting plate 220. Furthermore, the number of grooves 211 can be one, two, or more; no specific limitation is made here.

[0060] Please see Figure 3 , Figure 6 and Figure 7In one embodiment, the inner wall of the water passage 110 is provided with a buffer surface 111. The buffer surface 111 extends along the water inlet direction of the water passage 110 and is inclined towards the outlet 120. It is understood that the buffer surface 111 can be a plane or an arc surface; no specific limitation is made here. By providing the buffer surface 111 within the water passage 110, the turbulence within the water passage 110 and the impact on the flow restrictor 200 can be reduced, thus extending the service life of the flow restrictor 200.

[0061] Please see Figure 4 , Figures 6 to 8 In one embodiment, the housing 100 includes a housing body 140 and a buffer enclosure 150. The buffer enclosure 150 is disposed at one end of the housing body 140 near the outlet 120 and encloses the housing body 140 to form the water passage 110. The inner wall of the buffer enclosure 150 is provided with a buffer surface 111. An avoidance space 160 is formed between the outer wall of the buffer enclosure 150 and the housing body 140. Part of the flow limiting member 200 is disposed in the avoidance space 160.

[0062] It is understood that the specific structure of the buffer enclosure 150 is not limited, and it can be formed by one, two, or a combination of multiple enclosures. The inner wall of the buffer enclosure 150 is provided with a buffer surface 111, and the outer wall of the buffer enclosure 150 forms a clearance space 160. The buffer enclosure 150 has a high structural utilization rate. Some of the flow limiting components 200 are located in the clearance space 160, which makes the structure of the flow limiting component 10 compact and is conducive to the miniaturization of the flow limiting component 10.

[0063] Please see Figures 6 to 8 In one embodiment, the buffer enclosure 150 includes a buffer plate 151 and a guide plate 152. The buffer surface 111 is disposed on the buffer plate 151, and the guide plate 152 is disposed at one end of the buffer plate 151 near the outlet 120. The guide plate 152 and the shell body 140 enclose each other to form the outlet 120. The guide plate 152 extends along the water inlet direction of the water passage 110. And / or, the shell 100 has an inlet 130 communicating with the water passage 110, and the opening area of ​​the inlet 130 is larger than the opening area of ​​the outlet 120.

[0064] Understandably, the guide plate 152 extends along the water inlet direction of the water passage 110, enabling it to guide the water flow within the passage 110 and improve its smoothness. Furthermore, the opening area of ​​the inlet 130 of the housing 100 is larger than that of the outlet 120, which reduces turbulence within the water passage 110 and the impact on the flow restrictor 200, thus extending the service life of the flow restrictor assembly 10.

[0065] In one embodiment, the buffer surface 111 extends along the water inlet direction of the water passage 110 and is inclined towards the outlet 120. It is understood that the buffer surface 111 can be a plane or an arc surface; no specific limitation is made here. By providing the buffer surface 111 within the water passage 110, turbulence within the water passage 110 and the impact on the flow restrictor 200 can be reduced, thus extending the service life of the flow restrictor 200.

[0066] Please see Figure 3 , Figures 5 to 7 In one embodiment, the flow limiting component 10 further includes a magnetic suction member 300 and a magnetic suction accessory 400 that cooperates with the magnetic suction member 300. One of the magnetic suction member 300 and the magnetic suction accessory 400 is disposed on the flow limiting plate 220, and the other is disposed on the housing 100 and located at the water outlet 120.

[0067] It is understood that the magnetic attractor 300 is a magnet or a magnetite, and the magnetic attractor accessory 400 is a magnet or a magnetite, or a metal part that can be magnetically attracted to a magnet or a magnetite; the specifics are not limited here. By setting the magnetic attractor 300 and the magnetic attractor accessory 400 on the housing 100 at the flow restrictor 220 and the outlet 120, when the flow restrictor 220 closes the outlet 120, the magnetic attractor 300 and the magnetic attractor accessory 400 attract each other, increasing the effect of the flow restrictor 220 in closing the outlet 120, enhancing the stability of the flow restrictor 220 in closing the outlet 120, and reducing the shaking of the flow restrictor 220.

[0068] In one embodiment, the flow limiting plate 220 has a first mounting portion at its edge away from the counterweight 210, and the water outlet 120 of the housing 100 has a second mounting portion at its edge away from the counterweight 210. One of the magnetic suction member 300 and the magnetic suction accessory 400 is located in the first mounting portion, and the other is located in the second mounting portion.

[0069] It is understandable that the first mounting part and the second mounting part facilitate the installation of the magnetic component 300 and the magnetic accessory 400. The first mounting part and the second mounting part can be in the shape of a groove 211 or a protrusion, and the specific shape is not limited here. The magnetic component 300 and the magnetic accessory 400 can be fixed by adhesive bonding or by injection molding, and the specific shape is not limited here.

[0070] In one embodiment, the area of ​​the flow-limiting plate 220 is larger than the cross-sectional area of ​​the outlet 120. This configuration ensures that the flow-limiting plate 220 can completely close the outlet 120. When there is no water or the water flow is small in the water passage, the flow-limiting plate 220 completely closes the outlet under the action of a first force. When the flow-limiting component is applied to the water tank assembly, water in the tank cannot overflow from the outlet into the water passage 110, meaning water in the tank cannot overflow from the outlet.

[0071] Please see Figures 1 to 3 The present invention also proposes a water tank assembly 20, which includes the water tank assembly 20 described above. The specific structure of the water tank assembly 20 is as described in the above embodiments. Since the water tank assembly 20 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0072] In one embodiment, the tank body 21 has a receiving cavity 22 and a water inlet communicating with the receiving cavity 22. The housing 100 of the water tank assembly 20 is disposed on the tank body 21 and located at the water inlet. The water outlet 120 of the housing 100 is communicating with the receiving cavity 22.

[0073] Understandably, because the counterweight 210 and the flow-limiting plate 220 are located on both sides of the rotation fulcrum 231 to form a lever structure, the counterweight 210 can rotate around the rotation fulcrum 231 under the action of gravity. The flow-limiting plate 220 rotates synchronously with the rotation of the counterweight 210. The counterweight 210 is configured to provide a first force to the flow-limiting plate 220 to continuously close the outlet 120 under the action of gravity. When there is no water in the water passage 110 or the water flow is small, the first force causes the flow-limiting plate 220 to continuously close the outlet 120; when... When the water flow in the water passage 110 is large, the water pressure pushes the flow limiting plate 220 to rotate, causing the flow limiting plate 220 to open the outlet 120. Because the counterweight 210 continuously provides the first force to close the outlet 120 under the action of gravity, when the water pressure disappears, the flow limiting plate 220 will continue to close the outlet 120, and the water in the receiving cavity 22 cannot generate the force to make the flow limiting element 200 rotate and open the outlet 120, so that the water in the tank 21 cannot overflow from the outlet 120, thereby realizing the function of one-way water supply.

[0074] In one embodiment, the water inlet is located at the top of the tank 21, and the water passage 110 extends downwards within the tank assembly 20. This arrangement means that the flow-limiting component 10 is vertically mounted at the water inlet, the water passage 110 extends downwards, and the direction of gravity of the counterweight 210 is the same as the direction of extension of the water passage 110. Water flowing into the water passage 110 can impact the flow-limiting plate 220 under gravity, opening the outlet 120 and flowing into the tank 21.

[0075] In one embodiment, the outlet 120 of the housing 100 and / or the flow restrictor 200 are disposed within the receiving cavity 22 and positioned below the top wall of the receiving cavity 22 at the water inlet. This arrangement ensures that the flow restrictor 200 is positioned below the top wall of the receiving cavity 22 at the water inlet, i.e., the flow restrictor 200 is spaced apart from the top wall of the receiving cavity 22. When the water level in the receiving cavity 22 is higher than the flow restrictor 220, the flow restrictor 220 will close the outlet 120 under the combined action of the buoyancy of the water and the first force provided by the counterweight 210 under gravity, preventing water from overflowing from the water inlet when the water flow in the tank is unstable or when there is excessive foam.

[0076] In one embodiment, the flow-limiting component 10 further includes a sealing element 500 disposed at the water inlet to seal the gap between the housing 100 and the tank 21. This arrangement prevents water from flowing out from the gap between the housing 100 and the tank 21, improving the reliability of the water tank assembly 20. To facilitate the installation of the sealing element 500, an annular mounting groove is provided on the outer peripheral wall of the housing 100. The sealing element 500 is annularly arranged and disposed within the annular mounting groove, abutting against the groove wall and the wall of the water inlet to seal the gap between the housing 100 and the tank 21.

[0077] In one embodiment, one of the housing 21 and the shell 100 is provided with a positioning part, and the other is provided with a mating part adapted to the positioning part. The shell 100 is positioned and installed on the housing 21 through the positioning part. This arrangement allows the shell 100 to be quickly and stably installed on the housing 21. One of the positioning part and the mating part can be a snap-fit ​​groove, and the other can be a snap-fit ​​post. The snap-fit ​​post is engaged in the snap-fit ​​groove to achieve the positioning and installation of the shell 100 and the housing 21.

[0078] This utility model also proposes a cleaning machine, which includes the water tank assembly 20 as described above. The specific structure of the water tank assembly 20 is as described in the above embodiments. Since this cleaning machine adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0079] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A current limiting component, characterized in that, include: The housing has a water passage and a water outlet communicating with the water passage; A flow restrictor has a pivot point and counterweights and a flow restrictor plate located on both sides of the pivot point. The flow restrictor is rotatably mounted on the housing via the pivot point to open or close the outlet. The counterweights are configured to provide a first force to the flow restrictor plate under gravity to continuously close the outlet, thereby restricting the water flow from the water passage to the outlet in a one-way direction. The flow restrictor plate is used to open the outlet when the second force exerted by the water flow on the flow restrictor plate in the water passage is greater than the first force.

2. The current limiting component as described in claim 1, characterized in that, The flow limiting plate is located on the side of the counterweight facing the outlet, and the torque generated by the gravity of the counterweight is greater than the torque generated by the gravity of the flow limiting plate.

3. The current limiting component as described in claim 2, characterized in that, The line along the water inlet direction of the water passage and passing through the rotation fulcrum is defined as the centerline. When the flow limiting device closes the water outlet, the geometric center of the counterweight and the geometric center of the flow limiting plate are located on both sides of the centerline, and the weight of the counterweight is greater than the weight of the flow limiting plate.

4. The current limiting component as described in claim 1, characterized in that, The flow limiting component further includes a rotating column, which has the rotating fulcrum. The rotating column is connected to the counterweight and is rotatably disposed on the outer peripheral wall of the housing. The flow limiting plate is connected to the rotating column and / or the counterweight.

5. The current limiting component as described in claim 4, characterized in that, The rotating column is located at the upper end of the counterweight, and the flow limiting plate is located on the side wall of the counterweight facing the outlet and is spaced apart from the rotating column. The flow limiting plate is located in the upper half of the counterweight. And / or, the counterweight is provided with an upward-facing groove.

6. The current limiting component as described in claim 1, characterized in that, The shell includes a shell body and a buffer enclosure. The buffer enclosure is located at one end of the shell body near the outlet and forms the water passage by enclosing the shell body. The inner wall of the buffer enclosure has a buffer surface, and an avoidance space is formed between the outer wall of the buffer enclosure and the shell body. Part of the flow limiting component is located in the avoidance space.

7. The current limiting component as described in claim 6, characterized in that, The buffer enclosure includes a buffer plate and a guide plate. The buffer surface is disposed on the buffer plate, and the guide plate is disposed at one end of the buffer plate near the water outlet. The guide plate and the shell body enclose the water outlet. The guide plate extends along the water inlet direction of the water passage. And / or, the housing has a water inlet communicating with the water passage, and the opening area of ​​the water inlet is larger than the opening area of ​​the water outlet; And / or, the buffer surface extends along the water inlet direction of the water passage and is inclined toward the outlet.

8. The current limiting component as described in any one of claims 1 to 7, characterized in that, The flow limiting component also includes a magnetic suction element and a magnetic suction accessory that cooperates with the magnetic suction element. One of the magnetic suction element and the magnetic suction accessory is disposed on the flow limiting plate, and the other is disposed on the housing and located at the water outlet.

9. The current limiting component as described in claim 8, characterized in that, The flow limiting plate has a first mounting part at the edge away from the counterweight, and the water outlet of the shell has a second mounting part at the edge away from the counterweight. One of the magnetic suction component and the magnetic suction accessory is located at the first mounting part, and the other is located at the second mounting part. And / or, the area of ​​the flow restrictor is greater than the cross-sectional area of ​​the outlet.

10. A water tank assembly, characterized in that, include: The housing has a receiving cavity and a water inlet communicating with the receiving cavity; as well as The flow limiting component as described in any one of claims 1 to 9, wherein the housing is disposed on the box and located at the water inlet, and the water outlet of the housing is in communication with the receiving cavity.

11. The water tank assembly as claimed in claim 10, characterized in that, The outlet of the shell and / or the flow restrictor are located inside the receiving cavity and are positioned below the top wall of the receiving cavity at the inlet hole; And / or, the flow limiting component further includes a seal disposed at the water inlet to seal the gap between the housing and the box body; And / or, one of the housing and the box body is provided with a positioning part, and the other is provided with a mating part adapted to the positioning part, and the housing is positioned and installed with the box body through the positioning part; And / or, the water inlet is located at the top of the tank body, and the water passage extends in the water tank assembly in a top-to-bottom direction.

12. A cleaning machine, characterized in that, Includes the water tank assembly as described in claim 10 or 11.

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