Internal and external pressure equalizing water tank device

Abstract

The present invention is applicable to the field of cleaning technology. The present invention discloses an internal and external pressure balanced water tank device, comprising a water tank body provided with a liquid storage cavity and a water inlet and outlet mechanism provided on the water tank body and connected to the storage cavity after being pressurized, and a pressure relief mechanism capable of maintaining pressure balance in the water tank, wherein the pressure relief mechanism comprises a pressure relief pipe connected to the water inlet and outlet mechanism, the free end of the pressure relief pipe is provided with a buoyancy component capable of adjusting the air pressure in the water tank body, and the pressure relief pipe is provided with a flexible structure between the water outlet pipe and the buoyancy component. Since the pressure relief mechanism can keep the air part in the water tank connected to the outside through the water inlet and outlet mechanism, when the water tank is under pressure during the cleaning process, the air can be transported to the outside of the water tank together with the clean water, thereby effectively reducing the internal pressure of the water tank, balancing the pressure inside and outside the water tank, and avoiding the pressure increase phenomenon generated in the water tank.

Description

Technical Field

[0001] The present invention relates to the field of cleaning technology, in particular to an internal and external pressure balancing water tank device. Background Art

[0002] Continuous scrubbing is usually required during the scrubbing process so that the cleaning efficiency will be higher. However, when a scrubbing stick is used for scrubbing, the surface of the scrubbing stick is usually made of a sponge. After squeezing the scrubbing stick, the sewage is collected, and the squeezed air is collected at the same time, causing the pressure in the collection liquid cavity to increase. The need to effectively release the pressure has become a problem that needs to be solved. Summary of the Invention

[0003] The main technical problem solved by the present invention is to provide an internal and external pressure balanced water tank device, which can avoid the pressure difference between the inside and outside of the water tank, which increases the difficulty of circulating water entering the water tank.

[0004] In order to solve the above technical problems, the present invention provides an internal and external pressure balanced water tank device, which includes a water tank body provided with a liquid storage cavity and a water inlet and outlet mechanism provided on the water tank body and connected to the storage cavity after the water tank body is pressurized, as well as a pressure relief mechanism that can maintain the pressure balance of the water tank. The pressure relief mechanism includes a pressure relief pipe connected to the water inlet and outlet mechanism, and the free end of the pressure relief pipe is provided with a buoyancy component that can adjust the air pressure in the water tank body. The pressure relief pipe is provided with a flexible structure between the water inlet and outlet mechanism and the buoyancy component.

[0005] Furthermore, the buoyancy component includes a buoyancy ball, and the buoyancy ball can release air pressure to the outside of the water tank body through the pressure relief pipe.

[0006] Furthermore, the buoyancy ball is provided with a branch pipe, one end of which extends out from a fixed end where the buoyancy ball is fixed to the pressure relief pipe and a free end which is flush with the buoyancy ball. The free end is provided with a first pressure relief port, and one or more protrusions are provided next to the first pressure relief port to prevent liquid from being poured into the first pressure relief port.

[0007] Furthermore, the plurality of protrusions can detachably fix a filter assembly, and the filter assembly covers the first pressure relief port.

[0008] Furthermore, the buoyancy ball is provided with a cavity, and the branch pipe passes through the buoyancy ball to form the cavity into a closed cavity.

[0009] Furthermore, the protrusion is provided with a second pressure relief port connected to the first pressure relief port, and the second pressure relief port may be immersed in the liquid or float on the liquid surface.

[0010] Furthermore, the branch pipe is arranged along the diameter direction of the buoyancy ball.

[0011] Furthermore, the water inlet and outlet mechanism includes a mounting seat and a fixed seat arranged in the mounting seat, on which are respectively provided a clean water output component that can form a clean water output channel when pressed, and a sewage access component that forms a sewage input channel when pressed, wherein the clean water output component includes a water outlet pin structure that cooperates with the through hole on the fixed seat and a pressure spring that causes the water outlet pin structure to be in an extending tendency, and a limiting component that limits the extended position of the water outlet pin structure. When the water outlet pin structure is pressed and moved, the water outlet pin structure and the through hole form a clean water output channel.

[0012] Furthermore, the water outlet ejector structure includes a body and a water outlet switch component provided on the body, and a flow hole forming a part of the clean water output channel is provided between the water outlet switch component and the body.

[0013] Furthermore, a water outlet sealing structure is provided between the water outlet switch component and the limiting component.

[0014] Furthermore, the water outlet sealing structure includes a sealing ring fixed in the annular mounting groove. The sealing ring is provided with a notch, and the notch and the end of the fixing seat form a communicating gap to constitute a part of the clean water output channel.

[0015] Furthermore, the sealing ring is provided with extension portions on both sides in a direction perpendicular to the diameter, and a protrusion in the diameter direction, and the protrusion is provided with a sealing mating surface.

[0016] Furthermore, the sealing mating surface is an inclined surface.

[0017] Furthermore, a guide structure is provided between the fixing seat and the body.

[0018] Furthermore, the guide structure includes a guide groove provided on the fixing seat and a guide bar provided on the main body, or a guide groove provided on the main body and a guide bar provided on the fixing seat, and the guide groove cooperates with the guide bar.

[0019] The present invention provides a water tank device for equalizing internal and external pressures, including a water tank body with a liquid storage cavity, a water inlet and outlet mechanism disposed in communication with the storage cavity when the water tank body is pressurized, and a pressure relief mechanism for maintaining pressure balance in the water tank. The pressure relief mechanism includes a pressure relief pipe connected to a water outlet pipe, a buoyancy component disposed at the free end of the pressure relief pipe capable of regulating the air pressure within the water tank body, and a flexible structure disposed between the water outlet pipe and the buoyancy component. Because the pressure relief mechanism maintains the air within the water tank in communication with the outside through the water inlet and outlet mechanism, when pressure builds up in the water tank during cleaning, the air can be transported to the outside of the water tank along with the clean water, effectively reducing the internal pressure of the water tank, achieving internal and external pressure balance, and preventing pressure buildup within the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the description only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of an embodiment of an internal and external pressure equalizing water tank device.

[0022] Figure 2 It is a schematic diagram of the orthographic projection structure of an embodiment of an internal and external pressure equalizing water tank device along the length direction.

[0023] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the intermediate water tank device embodiment along the AA direction.

[0024] Figure 4 for Figure 3 Schematic diagram of the structural cross-section along the BB direction.

[0025] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part C in the middle.

[0026] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part D.

[0027] Figure 7 It is a schematic diagram of the explosion structure of the water tank device embodiment.

[0028] Figure 8 It is a schematic diagram of a usage state of the water tank device containing liquid.

[0029] Figure 9 It is a schematic diagram of another usage state of the water tank device containing liquid.

[0030] Reference numerals:

[0031] Internal and external pressure equalizing water tank device 1;

[0032] Water inlet and outlet mechanism 10;

[0033] Fixed seat 101,

[0034] Clean water output assembly 102, water inlet and outlet pin structure 1021, body 10211, water inlet and outlet switch component 10212, flow hole 10213,

[0035] Sewage access assembly 103, water inlet and outlet pin structure 1031, body notch 10311,

[0036] Mounting seat 104, vent hole 1041, filter assembly sealing eaves 1042, suction pipe interface 1043, buckle 1044, buckle 1045, guide rib 1046, pressure relief interface 1047,

[0037] Sealing plate 105,

[0038] Suction pipe 106,

[0039] Pressing spring 107;

[0040] Sealing ring 108, first extension portion 1081, second extension portion 1082, protrusion 1083, notch 1084;

[0041] Water tank body 20, clamping portion 201, clamping groove 202, upper body 206, lower body 207;

[0042] Pressure relief mechanism 30, pressure relief pipe 301, buoyancy component 302, cavity 3021, fixed end 3022, branch pipe 3023, protrusion 3024, first pressure relief port 3025;

[0043] Filter assembly 40, filter assembly connection port 401;

[0044] Liquid level H;

[0045] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0046] The following is a further detailed description of the claims of the present invention in conjunction with specific embodiments and accompanying drawings. It is obvious that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments proposed by ordinary technicians in this field without making creative efforts are also within the scope of protection of the present invention.

[0047] It should be understood that, in the description of the embodiments of the present invention, all directional indication terms, such as "up," "down," "left," "right," "front," "back," etc., indicate positions or positional relationships based on the positions and positional relationships shown in the accompanying drawings or the positions or positional relationships in which the inventive product is typically placed when in use. These terms are intended only to simplify the description of the present invention and do not explicitly or implicitly indicate that the devices, elements, or components referred to must have a specific position or specific directional structure, and should not be construed as limiting the present invention. They are only used to explain the relative positional relationships and movement conditions between the components shown in the accompanying drawings. When the specific posture changes, the directional indication may also change accordingly.

[0048] Furthermore, ordinal numbers such as "first" and "second" in this disclosure are used solely for distinction purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. The terms "first" and "second" may explicitly or implicitly indicate at least one of the technical features. In this disclosure, "plurality" means at least two, i.e., two or more, unless otherwise expressly specified; and "at least one" means one, one, or more.

[0049] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can mean that the positional relationship between components is relatively fixed, or that the components are physically fixedly connected. It can be a detachable connection or an integrated structure. It can be a mechanical connection or an electrical signal connection. It can be a direct connection or an indirect connection through an intermediate medium or component. It can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined in the specification, other understandings may not achieve the corresponding functions or effects. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The controllers and control circuits involved in the present invention are conventional control technologies or units known to those skilled in the art. For example, the control circuits of the controllers can be implemented by those skilled in the art using existing technologies, such as simple programming. Regarding software or programs that work with hardware to achieve control results, if the description does not provide a detailed description of the software or program control process involved, then the existing technologies or conventional technologies known to those skilled in the art are used. The power supply also uses the existing technologies described above, and the main technical point of the present invention is to improve the mechanical device. Therefore, the present invention will not further describe the specific circuit control relationships and circuit connections.

[0051] The disclosure of the present invention provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described in the present invention. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0052] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0053] like Figures 1-8 As shown, the present invention provides an embodiment of an internal and external pressure equalizing water tank device.

[0054] The internal and external pressure balanced water tank device 1 includes a water tank body 20 provided with a liquid storage cavity, a water inlet and outlet mechanism 10 provided on the water tank body 20 and connected to the storage cavity after being pressurized, and a pressure relief mechanism 30 capable of maintaining pressure balance in the water tank. The pressure relief mechanism includes a pressure relief pipe 301 connected to a water outlet pipe (not shown in the figure), and the free end of the pressure relief pipe 301 is provided with a buoyancy component 302 capable of adjusting the air pressure in the water tank body. The pressure relief pipe 301 is provided with a flexible structure (not shown in the figure) between the water outlet pipe and the buoyancy component 302. The flexible structure can ensure that the water tank can float on the liquid surface H under the action of the buoyancy component 302 in any state, so that the portion above the liquid surface H can be connected to the outside of the water tank.

[0055] Specifically, if Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the buoyancy component 302 can be a structure including a buoyancy ball. The buoyancy ball can release air pressure to the outside of the water tank body through the pressure relief pipe. The buoyancy ball is provided with a branch pipe 3023. One end of the branch pipe 3023 extends from a fixed end 3022 where the buoyancy ball is fixed to the pressure relief pipe 301, and a free end (not shown) flush with the buoyancy ball. The free end is provided with a first pressure relief port 3025. One or more protrusions 3024 are provided adjacent to the first pressure relief port 3025. These protrusions 3024 prevent the first pressure relief port 3025 from being temporarily submerged below the liquid level H and then floating up during rapid shaking of the water tank, thereby forming a water film on the first pressure relief port 3025 and hindering its pressure relief function. The protrusions 3024 are evenly distributed around the first pressure relief port 3025. The buoyancy ball is provided with a cavity 3021. The branch pipe 3023 extends through the buoyancy ball, forming a closed cavity. The protrusion 3024 is provided with a second pressure relief port (not shown in the drawings) communicating with the first pressure relief port. This second pressure relief port can be submerged in the liquid or float on the liquid surface. This design indirectly increases the total area of the first and second pressure relief ports that can function, thereby achieving a better pressure relief effect. The branch pipe 3023 is arranged along the diameter of the buoyancy ball, which ensures that the first pressure relief port 3025 is as far above the liquid surface as possible.

[0056] As a further improved embodiment, the multiple protrusions 3024 can be used as fixed fulcrums, and a filter assembly (not shown in the figure) can be detachably fixed on the multiple protrusions 3024. The filter assembly covers the first pressure relief port 3025 to prevent the first pressure relief port 3025 from being briefly immersed below the liquid level H and then floating up when the water tank shakes violently, so that impurities in the sewage flowing back into the first pressure relief port 3025 clog the pressure relief pipe 301 and prevent it from performing its pressure relief function.

[0057] Specifically, if Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the water inlet and outlet mechanism includes a mounting seat 104 and a fixed seat 101 disposed within the mounting seat 104. The fixed seat 101 is provided with a clean water output assembly 102 that forms a clean water output channel when pressed, and a sewage inlet assembly 103 that forms a sewage input channel when pressed. The clean water output assembly 102 includes a water inlet and outlet pin structure 1021 that cooperates with a through hole (not shown in the drawings) on the fixing seat 101, a pressure spring 107 that forces the water outlet pin structure 1021 to extend, and a limiting component or structure 1011 that limits the extended position of the water inlet and outlet pin structure 1021. When the water inlet and outlet pin structure 1021 is pressed and moved, the water inlet and outlet pin structure 1021 and the through hole form a clean water channel (not shown in the drawings). Specifically, the limiting component or structure 1011 is provided on one side of the through hole. The water inlet and outlet ejector pin structure 1021 includes a body 10211 and a water inlet and outlet switch component 10212 extending outward from the body 10211. A flow hole 10213, which forms part of the clean water channel, is provided between the water inlet and outlet switch component 10212 and the body 10211. A water inlet and outlet sealing structure is provided between the water outlet switch component 10212 and the limiting component or structure 1011. This water inlet and outlet sealing structure includes a sealing ring 108 fixed in an annular mounting groove (not shown in the drawings). The sealing ring 108 has a notch 1084, which forms a communicating gap with the inner end wall of the fixing base 101, forming part of the clean water channel (not shown in the drawings). The sealing ring 108 is provided with extension parts on both sides in the vertical direction of the diameter, namely the first extension part 1081 and the second extension part 1082, and is provided with a protrusion 1083 in the diameter direction. The protrusion 1083 is located between the first extension part 1081 and the second extension part 1082. The protrusion 1083 is provided with a sealing mating surface (not marked in the drawings), which cooperates with the limiting component or structure 1011 for sealing.

[0058] As a further improved embodiment, the sealing mating surface is a sloped surface.

[0059] like Figure 4 、 Figure 5 、 Figure 6 As shown, when the water inlet and outlet switch component 10212 is compressed inward, the protrusion 1083 moves away from the sealing surface, forming a gap between the protrusion 1083 and the sealing surface. This gap is connected to the pressure relief pipe 301 in the water tank through the flow hole 10213. This allows both liquid and air in the water tank to be discharged, effectively reducing the internal pressure of the water tank and balancing the pressure inside and outside the water tank, thereby preventing pressure buildup in the water tank.

[0060] Specifically, if Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the sewage inlet assembly 103 has the same structure as the clean water outlet assembly 102, namely, it includes a water inlet and outlet pin structure 1031 that engages with a through-hole (not shown) in the fixing base 101, a pressure spring 107 that forces the water inlet and outlet pin structure to extend, and a stopper or structure 1011 that limits the extended position of the water inlet and outlet pin structure 1031. When the water inlet and outlet pin structure 1031 is pressed and moved, the water inlet and outlet pin structure 1031 and the through-hole form a sewage channel (not shown). Specifically, the stopper or structure 1011 is located on one side of the through-hole. The water inlet and outlet pin structure 1031 includes a body notch 10311 with a notch, and an inlet and outlet switch component 10212 extending outward from the body notch 10311. A flow hole 10213 is provided between the inlet and outlet switch component 10212 and the body notch 10311, forming part of the sewage channel. A water inlet and outlet sealing structure is provided between the water outlet switch component 10212 and the limiting component or structure 1011. This water inlet and outlet sealing structure includes a sealing ring 108 fixed in an annular mounting groove (not shown in the drawings). The sealing ring 108 is provided with a notch 1084. This notch 1084 forms a connecting gap with the inner end wall of the fixing seat 101, forming a portion of the sewage channel (not shown in the drawings). The sealing ring 108 is provided with extensions on both sides perpendicular to the diameter, namely a first extension 1081 and a second extension 1082. A protrusion 1083 is provided in the diametrical direction. The protrusion 1083 is located between the first extension 1081 and the second extension 1082. The protrusion 1083 is provided with a sealing mating surface (not shown in the drawings) that cooperates with the limiting component or structure 1011 to provide a seal. The difference between the sewage access component 103 structure and the clean water output component 102 is that the water inlet and outlet pin structure 1031 includes a main body notch 10311 with a notch, and a bypass channel with a circuitous structure (not shown in the drawings) is also provided in the main body notch 10311, and the bypass channel can still be used as part of the sewage channel.

[0061] As a further improved embodiment, the sealing mating surface is a sloped surface.

[0062] It should be noted that the water inlet and outlet pin structure 1021, water inlet and outlet switch component 10212, and water inlet and outlet pin structure 1031 mentioned above can also be called water inlet pin structure 1021 or water outlet pin structure 1021, water inlet switch component 10212 or water outlet switch component 10212, water inlet pin structure 1031 or water outlet pin structure 1031, which does not affect the understanding of those skilled in the art on the basis of the technical essence expressed in the full text of this application. The above text simply uses neutral words to express the purpose of the relevant components for "water inlet" or "water outlet". Regardless of whether the above text uses words with directional attributes to express the function of the component, in fact, all the components mentioned above with "inlet and outlet" qualifiers have the function of transporting water in two directions. Any changes and adjustments such as replacement of other names or transformation, deformation, and improvement of similar structures to achieve the same technical purpose or technical effect are within the scope of protection of this application.

[0063] As a further improved embodiment, as needed, a guide structure is provided between the fixed seat 101 and the main body 10211 to make the telescopic movement smoother. The guide structure includes a guide groove (not shown in the drawings) provided on the fixed seat 101 and a guide bar (not shown in the drawings) provided on the main body 10211, or a guide groove provided on the main body and a guide bar provided on the fixed seat, and the guide groove cooperates with the guide bar.

[0064] Specifically, if Figures 3 to 7As shown, the clean water output component 102 and the sewage access component 103 of the water inlet and outlet mechanism 10 are elastically clamped between the fixing seat 101 and the mounting seat 104. One end of the pressure spring 107 abuts against the water inlet and outlet ejector pin 1021 and the other end abuts against the mounting seat 104. Both ends of the fixing seat 101 are open. The end with the larger opening is provided with a card interface edge (not shown in the figure) with a certain strength and thickness and an overturned interface that expands outward, and the end with the smaller opening is sleeved on the inner wall of the mounting seat 104. The fixing seat 10 A partition (not shown) is provided on the side near the large end to block the opening. The partition is provided with a tapered through-hole that abuts against the water inlet and outlet pin 1021. A sealing pad 105 is sandwiched between the end face of the small end of the fixing seat 101 and the inner bottom wall of the mounting seat 104. The sealing pad 105 is made of elastic material. After the fixing seat 101 and the mounting seat 104 are detachably connected by tightening screws, the elastic sealing pad 105 can fill the gap between the two, effectively preventing leakage. The outer walls of the large and small ends of the fixing seat 101 maintain two different outer diameters. The outer wall of the fixing seat 101 must be provided with a step (not shown) that separates the large and small ends. A sealing ring (not shown) is sleeved on the outer wall of the lower portion of the clamping interface edge of the large end of the fixing seat 101, extending all the way to the step. The sealing ring can seal the gap between the water inlet and outlet mechanism 10 and the water tank body 20 after being clamped together.One end of the mounting seat 104 is open, and the open end is sleeved with the fixing seat 101, and the other end is closed, but a through hole (not marked in the figure) is provided on the closed end surface of the mounting seat 104, which is connected to the clean water output component 102 and the sewage access component 103, wherein a suction pipe interface 1043 is provided on the closed end surface of the mounting seat 104 and extends outward from the through hole of the clean water output component 102, and the suction pipe 106 for sucking the water contained in the water tank body 20 is sleeved on the suction pipe interface 1043, and a semi-elliptical filter component sealing eaves 1042 is extended outward from the closed end surface of the mounting seat 104 around the suction pipe interface 1043, and two buckles 1044 are provided next to the semi-elliptical straight edges of the filter component sealing eaves 1042. On the elliptical arc side opposite to the semi-elliptical straight edge of 1042, the filter assembly sealing eaves 1042 extends outward with a buckle 1045 with a barb, and a filter assembly connection port 401 at an open end of a cylindrical filter assembly 40 with a semi-elliptical cross-section is coupled and detachably sleeved on the filter assembly sealing eaves 1042. The filter assembly 40 is provided with a snap (not marked in the figure) corresponding to the buckle 1044 and the buckle 1045. A pressure relief interface 1047 is provided on the closed end surface of the mounting seat 104 and outside the circle of the filter assembly sealing eaves 1042. The end of the pressure relief pipe 301 not connected to the buoyancy component 302 is sleeved on the pressure relief interface 1047. The peripheral wall and bottom wall of the filter assembly 40 are provided with multiple hollow structures (not marked in the figure), and its outer surface is covered with a filter net (not marked in the figure). A suction pipe 106 is sleeved on the suction pipe interface 1043, and the suction pipe 106 extends to an area close to the bottom wall of the filter assembly 40. In this way, when the water inlet and outlet mechanism 10 is facing upward, the filtered water in the filter assembly 40 in the internal and external pressure equalization water tank device 1 can still be sucked by the suction pipe 106. This absorbable state is maintained until the water level of the filtered water in the filter assembly 40 is lower than the lowest opening of the suction pipe 106 (not marked in the figure). In addition to the sealing eaves 1042 of the filter assembly on the closed end face of the mounting seat 104, there is also a sewage return port (not shown in the figure) connected to the sewage access assembly 103. The cleaned sewage of the cleaner passes through the return channel and then through the sewage return port 1045 to enter the cavity of the internal and external pressure equalization water tank device 1. After being filtered by the filter assembly 40, the sewage is sucked into the clean water channel through the suction pipe 106 and finally sent to the water outlet passage of the cleaner (not shown in the figure) through the clean water output assembly 102.A vent hole 1041 is further provided within the sealing eaves 1042 of the filter assembly on the closed end face of the mounting seat 104. When the water inlet and outlet mechanism 10 is facing upward and the pressure relief mechanism 30 has lost its pressure regulating function, the internal and external pressure equalizing water tank device 1 still has a pressure relief channel to slightly adjust the gas pressure inside and outside the pressure relief water tank device. When the water inlet and outlet mechanism 10 is facing downward and the water level in the filter assembly 40 is lower than the highest opening of the suction pipe 106, water can still enter the clean water channel through the vent hole 1041 and then be sent to the water outlet passage of the cleaner (not shown in the figure) through the clean water output assembly 102. A guide rib 1046 is provided on the outer wall of the mounting seat 104 that cooperates with the water tank body 20. The guide rib 1046 helps the installed water inlet and outlet mechanism 10 to be easily inserted into the water tank body 20. Since the outer wall of the water inlet and outlet mechanism 10 that cooperates with the water tank body 20 is a regular and symmetrical shape, the guide rib 1046 can also play a role in preventing reverse connection after it is provided.

[0065] Specifically, the water tank body 20 includes an upper water tank body (not shown in the drawings) and a lower water tank body (not shown in the drawings). The upper water tank body and the lower water tank body are sealed together. The side surface extending upward from the bottom of the lower water tank body is an inclined surface (not shown in the drawings). The top of the inclined surface, on the side opposite to the water inlet and outlet mechanism 10, is provided with a concave clamping portion 201 for easy installation and fixation. The clamping portion is provided with a concave clamping groove 202. When the internal and external pressure equalizing water tank device 1 is fixed, the corresponding buckle on the cleaner can be buckled into the clamping groove 202 of the clamping portion 201. When the internal and external pressure equalizing water tank device 1 needs to be removed, the corresponding buckle can be released to remove the internal and external pressure equalizing water tank device 1. As a further improved embodiment, the upper water tank body and the lower water tank body are sealed together by an ultrasonic welding layer (not shown in the drawings).

[0066] As a further improved embodiment, the water tank upper body and the water tank lower body are sealed and connected by a secondary injection molding process.

[0067] As a further improved embodiment, the water tank upper body and the water tank lower body are sealed and connected by a direct bonding process.

[0068] Specifically, if Figure 8As shown, when the water inlet and outlet mechanism 10 of the internal and external pressure equalizing water tank device 1 is tilted downward, a portion of the pressure relief mechanism 30 on the side away from the water inlet and outlet mechanism 10 is located above the liquid level H. Regardless of whether the opening of the water suction pipe 106 is always below the liquid level H, the pressure relief water tank device 1 still has the ability to release pressure to the outside of the pressure relief water tank device and also has the ability to continuously output clean water. When the water inlet of the water suction pipe 106 is below the liquid level H, the water suction pipe 106 can naturally achieve the effect of "discharging water outward." When the water inlet of the water suction pipe 106 is above the liquid level H, the air vent 1041 of the water inlet and outlet mechanism 10 is below the liquid level H and is merely a very small bypass branch of the water outlet channel 1024. Under the pressure of the liquid level H, the bypass branch of the water vent 1041 can achieve the effect of "discharging water outward." At the same time, due to the pressure difference between the inside and outside of the internal and external pressure equalizing water tank device 1, the internal and external pressure equalizing water tank device 1 of the cleaner used in this posture has the ability to supply water to the outside and release pressure to the outside at the same time.

[0069] Specifically, if Figure 9 As shown, when the water inlet and outlet mechanism 10 of the internal and external pressure equalizing water tank device 1 is tilted upward, a portion of the pressure relief mechanism 30 on the side proximal to the water inlet and outlet mechanism 10 is located above the liquid level H. At this time, the opening of the water suction pipe 106 is below the liquid level H. Under the combined action of water pressure and air pressure, pressure passes through the pressure relief mechanism 30 and is directly discharged along the pressure relief pipe to the outside of the internal and external pressure equalizing water tank device 1. Simultaneously, the air vent 1041 of the water inlet and outlet mechanism 10 is above the liquid level H and is merely a very small bypass branch of the water outlet channel 1024. The air vent 1041 is connected to the outside atmosphere. A circuitous structure (not shown in the drawings) is provided before the air vent 1041 to block the flow of water from the bypass branch to the air vent 1041. Simply put, the bypass branch of the air vent 1041 connected to the outside atmosphere achieves the effect of "air permeability but watertightness." At this time, the bypass branch of the vent hole 1041 that is connected to the outside atmosphere has the ability to release pressure to the outside of the water supply device. At the same time, since there is a pressure difference between the inside and outside of the internal and external pressure equalizing water tank device 1, and there is always a water inlet and / or water suction hole below the liquid level H on the suction pipe 106 (not shown in the accompanying drawings), the clean water output component can continuously output clean water to the outside. The internal and external pressure equalizing water tank device 1 of the cleaner used in this posture has the ability to release pressure to the outside of the water tank and the ability to continuously output clean water to the outside. Of course, when the liquid level H is lower than the water inlet opening of the suction pipe 106, the internal and external pressure equalizing water tank device 1 is naturally unable to continuously output clean water to the outside. At this time, the user is reminded to add clean water to the internal and external pressure equalizing water tank device 1 in order to continue using the cleaner.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An internal and external pressure equalizing water tank device, characterized in that: include: The water tank body is provided with a liquid storage cavity; The water inlet and outlet mechanism is provided on the water tank body and is connected to the storage cavity after being pressurized. The water inlet and outlet mechanism is provided with a clean water output component and a sewage access component. The clean water output component includes a water inlet and outlet ejector structure that cooperates with the through hole on the fixed seat and a limit component that limits the extended position of the water inlet and outlet ejector structure. The sewage access component includes a water inlet and outlet ejector structure that cooperates with the through hole on the fixed seat and a limit component that limits the extended position of the water inlet and outlet ejector structure. When the water inlet and outlet ejector structure is pressed and moved, the water inlet and outlet ejector structure and the through hole form a clean water channel and a sewage channel. The clean water output component is provided with a flow hole that forms a part of the clean water channel. The sewage access component is also provided with a bypass channel with a circuitous structure, which is part of the sewage channel. The pressure relief mechanism can maintain the pressure balance in the water tank body, including a pressure relief pipe connected to the water inlet and outlet mechanism, the flow hole of the clean water output component is connected to the pressure relief pipe, the free end of the pressure relief pipe is provided with a buoyancy component that can adjust the air pressure in the water tank body, and the pressure relief pipe is provided with a flexible structure between the water inlet and outlet mechanism and the buoyancy component. The flexible structure can ensure that when the water tank body is in any state, the buoyancy component can float on the liquid surface in the water tank body, so that the portion above the liquid surface can be connected to the outside of the water tank body.

2. The internal and external pressure equalizing water tank device according to claim 1, characterized in that: The buoyancy component includes a buoyancy ball, which can discharge air pressure to the outside of the water tank body through a pressure relief pipe.

3. The internal and external pressure equalizing water tank device according to claim 2, characterized in that: The buoyancy ball is provided with a branch pipe, which is arranged along the diameter direction of the buoyancy ball. One end of the branch pipe extends out from a fixed end where the buoyancy ball is fixed to the pressure relief pipe and a free end that is flush with the buoyancy ball. The free end is provided with a first pressure relief port. One or more protrusions are provided next to the first pressure relief port to prevent liquid from being poured into the first pressure relief port. A second pressure relief port connected to the first pressure relief port is provided on the protrusion.

4. The internal and external pressure equalizing water tank device according to claim 3, characterized in that: The plurality of protrusions are detachably used to fix a filter assembly, and the filter assembly covers the first pressure relief port.

5. The internal and external pressure equalizing water tank device according to claim 3, characterized in that: The buoyancy ball is provided with a cavity, and the branch pipe passes through the buoyancy ball to form the cavity into a closed cavity.

6. The internal and external pressure equalizing water tank device according to claim 3, characterized in that: The second pressure relief port may be immersed in the liquid or float on the liquid surface.

7. The internal and external pressure equalizing water tank device according to claim 1, characterized in that: The water inlet and outlet mechanism includes a mounting seat and a fixing seat arranged in the mounting seat, the fixing seat is provided with a through hole, and a clean water output component that can form a clean water output channel when pressed and a sewage access component that forms a sewage input channel when pressed are respectively provided on the fixing seat, wherein the clean water output component includes a water outlet ejector structure that cooperates with the through hole on the fixing seat, a pressing spring that causes the water outlet ejector structure to be in an extending tendency, and a limiting component that limits the extended position of the water outlet ejector structure. When the water outlet ejector structure is pressed and moved, the water outlet ejector structure and the through hole form a clean water output channel.

8. The internal and external pressure equalizing water tank device according to claim 7, characterized in that: The water outlet ejector structure includes a body and a water outlet switch component arranged on the body. The flow hole forming a part of the clean water output channel is provided between the water outlet switch component and the body.

9. The internal and external pressure equalizing water tank device according to claim 8, characterized in that: A water outlet sealing structure is provided between the water outlet switch component and the limiting component.

10. The internal and external pressure equalizing water tank device according to claim 9, characterized in that: The water outlet sealing structure includes a sealing ring fixed in the annular mounting groove. The sealing ring is provided with a notch. The notch and the end of the fixing seat form a communicating gap to constitute a part of the clean water output channel.

11. The internal and external pressure equalizing water tank device according to claim 10, characterized in that: The sealing ring is provided with extension parts on both sides in the direction perpendicular to the diameter, and a protrusion in the diameter direction, and the protrusion is provided with a sealing matching surface.

12. The internal and external pressure equalizing water tank device according to claim 11, characterized in that: The sealing matching surface is a sloped surface.

13. The internal and external pressure equalizing water tank device according to claim 8, characterized in that: A guide structure is provided between the fixing seat and the body.

14. The internal and external pressure equalizing water tank device according to claim 13, characterized in that: The guide structure includes a guide groove provided on the fixing seat and a guide bar provided on the body, or a guide groove provided on the body and a guide bar provided on the fixing seat, and the guide groove cooperates with the guide bar.

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