Drain valve and water dispenser

Abstract

The water dispenser comprises a hot water container, a cold water container and the drainage valve, and the drainage valve comprises a valve body and a sealing structure. The valve body is provided with a first drainage channel, a second drainage channel and a confluence channel, the first drainage channel is communicated with one of the cold water container and the hot water container, the second drainage channel is communicated with the other one of the cold water container and the hot water container, the first drainage channel and the second drainage channel are both communicated with the confluence channel, and the confluence channel is provided with a drainage port; the sealing structure is arranged at the confluence channel and is detachably connected with the valve body; when the sealing structure is assembled on the valve body, the sealing structure isolates the first drainage channel and the second drainage channel and seals the drainage opening. After the sealing structure is detached from the valve body, the first drainage channel and the second drainage channel are communicated with each other through the confluence channel and are drained from the drainage port, cold water and hot water can be simultaneously drained after being mixed, so that the operation is convenient, and personnel scald caused by overhigh water temperature during drainage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water dispensers, in particular to a drainage valve and a water dispenser. Background Art

[0002] After a water dispenser has not been used for a long time, the water in the hot water tank and the cold water tank needs to be drained to prevent it from spoiling and stinking. In the related art, the hot water tank and the cold water tank are generally drained separately through independent drainage devices. This arrangement has more drainage devices and is more troublesome to operate. Secondly, when the hot water is drained, the temperature of the hot water is high and it is easy to burn. Utility Model Content

[0003] The utility model provides a drain valve and a water dispenser, which can mix the cold water and hot water in the hot water tank and the cold water tank and discharge them at the same time. This is easy to operate and can avoid scalding caused by excessive water temperature during drainage.

[0004] In a first aspect, an embodiment of the utility model provides a drain valve, which is applied to a water dispenser, wherein the water dispenser includes a hot water tank and a cold water tank, and the drain valve includes a valve body and a sealing structure;

[0005] The valve body has a first drainage channel, a second drainage channel and a confluence channel, the first drainage channel is used to communicate with one of the cold water tank or the hot water tank, the second drainage channel is used to communicate with the other of the cold water tank or the hot water tank, and the first drainage channel and the second drainage channel are both connected to the confluence channel, and the confluence channel has a drainage port;

[0006] The sealing structure is arranged at the confluence channel and is detachably connected to the valve body;

[0007] Wherein, when the sealing structure is assembled on the valve body, the sealing structure isolates the first drainage channel and the second drainage channel and seals the drain port; after the sealing structure is removed from the valve body, the first drainage channel and the second drainage channel are connected to each other through the confluence channel and water is discharged from the drain port.

[0008] In a possible implementation, the valve body includes:

[0009] a valve core, constituting the first drainage section, wherein the first drainage channel includes the first drainage section;

[0010] A valve housing having an installation cavity, wherein the valve core is disposed in the installation cavity, wherein the valve core and an inner wall of the valve housing are partially spaced apart to form the second drainage section, wherein the second drainage channel includes the second drainage section;

[0011] Wherein, along the water flow direction of the first drainage section, the end of the valve core does not extend to the drainage port, so that the confluence channel is formed between the end of the valve core and the drainage port.

[0012] In a possible implementation, the valve body includes:

[0013] a first water inlet pipe connected to the valve housing or the valve core and having a first water inlet section, the first water inlet section being in communication with the first drainage section, the first drainage channel also including the first water inlet section; and

[0014] The second water inlet pipe is connected to the valve housing and has a second water inlet section. The second water inlet section is communicated with the second drainage section. The second drainage channel also includes the second water inlet section.

[0015] In a possible implementation, the valve housing, the first water inlet pipe, and the second water inlet pipe are integrated components, and the valve housing and the valve core are separate components.

[0016] In a possible implementation, the valve core includes

[0017] A first main body portion is disposed in the installation cavity and spaced apart from an inner wall of the installation cavity to form the second drainage section; and

[0018] a sealing portion connected to a section of the first main body close to the first water inlet pipe and sealed to an inner wall of the installation cavity to isolate the first drainage channel from the second drainage section;

[0019] Wherein, the first main body portion and the sealing portion jointly constitute the first drainage section.

[0020] In a possible implementation, the valve body further includes:

[0021] The sealing ring is arranged on the outer peripheral surface of the sealing portion and is interference fit with the cavity wall of the installation cavity.

[0022] In a possible implementation, an annular groove for fixing the sealing ring is provided on the outer peripheral surface of the sealing portion.

[0023] In a possible implementation, the inner diameter of the first water inlet section is smaller than the inner diameter of the installation cavity, so as to form a step structure at the connection between the first water inlet section and the installation cavity, and the end surface of the sealing portion abuts against the step surface of the step structure.

[0024] In a possible implementation, an inner wall surface of the first water inlet section and an inner wall surface of the first water discharge section transition smoothly.

[0025] In a possible implementation, the valve core further includes

[0026] A plurality of support portions are arranged at intervals along the outer circumference of the first main body portion and abut against the inner wall of the installation cavity.

[0027] In a possible implementation, the valve housing and the second water inlet pipe are an integral component, and the valve core and the first water inlet pipe are an integral component.

[0028] In a possible implementation, the valve core has an external thread; and the valve housing includes:

[0029] a threaded portion having an internal thread; and

[0030] The second main body is connected to the threaded part and has the drain port, and the second main body is spaced apart from the valve core to form the second drain section.

[0031] In a possible implementation, the first water inlet pipe and the second water inlet pipe are arranged at an angle.

[0032] In a possible implementation, the sealing structure includes:

[0033] A plug is partially disposed in the confluence channel and abuts against the end of the valve core to block the first drainage section, and is interference-fitted with a channel wall of the confluence channel to block the confluence channel.

[0034] In a possible implementation, the sealing structure includes:

[0035] a plug, comprising a first blocking portion, a first connecting portion and a second blocking portion connected in sequence, wherein the first blocking portion is disposed in the confluence channel and abuts against the end of the valve core to block the first drainage section, and the second blocking portion extends out of the confluence channel and abuts against one end of the valve housing forming the drainage port; and

[0036] A fixing member is detachably connected to the valve housing and is used to press the second blocking portion against one end of the valve housing forming the drain port.

[0037] In a possible implementation manner, the fixing member is snap-connected and / or screw-connected to the valve housing.

[0038] In a possible implementation, the plug is provided with a deformation space, and the deformation space runs from the inside of the first connecting part to the outer surface of the second blocking part.

[0039] In a possible implementation, the valve body further includes:

[0040] The second connection part is connected to the valve housing, and the second connection part is detachably connected to the water dispenser.

[0041] Based on the drain valve of the embodiment of the utility model, multi-channel drainage can be achieved by setting the first drainage channel and the second drainage channel on the drain valve, thereby improving the drainage efficiency of the cold water tank and the hot water tank of the water dispenser. By setting a confluence channel connected to the first drainage channel and the second drainage channel on the drain valve, the water in the cold water tank and the hot water tank can be mixed, and the temperature of the discharged water can be reduced before being discharged, thereby avoiding the risk of scalding to the user; in addition, the sealing structure can effectively isolate the water in the cold water tank and the hot water tank, prevent the cold and hot water circuits from being temperature-converted, thereby effectively preventing the cold water and hot water in the cold water tank and the hot water tank from mixing, and maintaining a stable water temperature. After the sealing structure is removed from the valve body, the water in the cold water tank and the hot water tank enters the confluence channel through the first drainage channel and the second drainage channel to mix, and then the mixed water is discharged from the drain port.

[0042] In a second aspect, an embodiment of the utility model provides a water dispenser, comprising a hot water tank, a cold water tank and the above-mentioned drain valve, wherein the drain valve is connected to the hot water tank and the cold water tank, and is used to mix the hot water in the hot water tank and the cold water in the cold water tank in the confluence channel and discharge them from the drain port after the sealing structure is removed from the valve body.

[0043] In the utility model, by providing the first drainage channel and the second drainage channel on the drainage valve, multi-channel drainage can be achieved, thereby improving the drainage efficiency of the cold water tank and the hot water tank of the water dispenser. By providing a confluence channel connected to the first drainage channel and the second drainage channel on the drainage valve, the water in the cold water tank and the hot water tank can be mixed, and the temperature of the discharged water can be reduced before the water is discharged, thereby avoiding the risk of scalding to the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0045] Figure 1 A schematic diagram of the structure of a water dispenser provided by an embodiment of the utility model;

[0046] Figure 2 A schematic diagram of the structure of a drain valve according to an embodiment of the present utility model;

[0047] Figure 3A cross-sectional schematic diagram of a drain valve according to an embodiment of the present utility model;

[0048] Figure 4 A schematic cross-sectional view of a valve body according to an embodiment of the present utility model;

[0049] Figure 5 An exploded schematic diagram of a drain valve according to an embodiment of the present utility model;

[0050] Figure 6 A top view of a drain valve according to an embodiment of the present utility model;

[0051] Figure 7 A side view of a drain valve according to an embodiment of the present utility model;

[0052] Figure 8 The present invention is a cross-sectional schematic diagram of a drain valve according to another embodiment of the present invention.

[0053] Description of Figure Numbers:

[0054] 1. Water dispenser; 10. Drain valve; 20. Hot water tank; 30. Cold water tank; 40. Chassis;

[0055] 100, valve body; 110, valve housing; 111, mounting cavity; 112, threaded portion; 113, second main body portion; 114, step structure;

[0056] 120, valve core; 121, first main body; 122, sealing portion; 122a, annular groove; 123, supporting portion; 130, sealing ring; 140, second connecting portion;

[0057] 200, sealing structure; 210, plug; 211, first blocking portion; 212, first connecting portion; 213, second blocking portion; 220, fixing member; 230, deformation space;

[0058] 300, first drainage channel; 310, first drainage section; 320, first water inlet section;

[0059] 400, second drainage channel; 410, second drainage section; 420, second water inlet section;

[0060] 500, confluence channel; 600, drainage outlet;

[0061] 700, first water inlet pipe; 800, second water inlet pipe.

[0062] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following part will further describe the embodiments of the present invention in detail in conjunction with the accompanying drawings.

[0064] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present utility model. Instead, they are only examples of devices and methods consistent with some aspects of the present utility model as detailed in the attached claims.

[0065] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previously associated objects are in an "or" relationship.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0067] The utility model embodiment provides a drain valve 10 and a water dispenser 1. Figure 1 The water dispenser 1 may include a case 40, a hot water tank 20, a cold water tank 30 and a drain valve 10, wherein the hot water tank 20 and the cold water tank 30 are arranged in the case 40. The drain valve 10 is connected to the case 40 and communicates with the hot water tank 20 and the cold water tank 30. The drain valve 1010 is communicated with the hot water tank 2020 and the cold water tank 3030, and is used to mix the hot water in the hot water tank 2020 and the cold water in the cold water tank 3030 in the confluence channel 500 after the sealing structure 200 is removed from the valve body 100, and discharge from the drain port 600, so that the temperature of the hot water can be reduced to avoid high water temperature during the drainage process, which may cause scalding to personnel.

[0068] It should be noted that after the water dispenser 1 has not been used for a long time, the water in the hot water tank 20 and the cold water tank 30 needs to be discharged to prevent deterioration and odor. However, if the hot water tank 20 and the cold water tank 30 are discharged separately through independent drainage devices, firstly, there are many discharge devices, which is more troublesome to operate, and secondly, when the hot water is discharged, the temperature of the hot water is high, which is easy to burn. The embodiment of the utility model connects the hot water tank 20 and the cold water tank 30 through the drainage valve 10, and the cold water and hot water in the hot water tank 20 and the cold water tank 30 can be mixed and discharged, which is convenient to operate and can avoid scalding caused by excessive water temperature during drainage.

[0069] The following is combined with Figures 2 to 5 , the drain valve 10 is introduced in detail. The drain valve 10 of the embodiment of the utility model includes a valve body 100 and a sealing structure 200.

[0070] Please refer to Figure 3 and Figure 4 The valve body 100 has a first drainage channel 300, a second drainage channel 400 and a confluence channel 500. The water inlet end of the first drainage channel 300 is connected to one of the cold water tank 30 or the hot water tank 20, and the water inlet end of the second drainage channel 400 is connected to the other of the cold water tank 30 or the hot water tank 20. The water outlet ends of the first drainage channel 300 and the second drainage channel 400 are both connected to the confluence channel 500, and the confluence channel 500 has a drain port 600, so that the water in the cold water tank 30 and the hot water tank 20 enters the confluence channel 500 through the first drainage channel 300 and the second drainage channel 400 to mix, and then the mixed water is discharged from the drain port 600.

[0071] Please refer to Figure 3 and Figure 5 The sealing structure 200 is detachably connected to the valve body 100 and is arranged at the confluence channel 500. When the sealing structure 200 is assembled on the valve body 100, the sealing structure 200 isolates the first drainage channel 300 and the second drainage channel 400, and seals the drainage port 600. In this way, when drainage is not required, the sealing structure 200 can effectively isolate the water in the cold water tank 30 and the hot water tank 20 to prevent the cold and hot water circuits from being mixed, thereby effectively preventing the cold water and hot water in the cold water tank 30 and the hot water tank 20 from mixing and maintaining the water temperature stable. After the sealing structure 200 is removed from the valve body 100, the water in the cold water tank 30 and the hot water tank 20 enters the confluence channel 500 through the first drainage channel 300 and the second drainage channel 400 to mix, and then the mixed water is discharged from the drainage port 600.

[0072] Based on the drain valve 10 of the embodiment of the utility model, multi-channel drainage can be achieved by providing the first drainage channel 300 and the second drainage channel 400 on the drain valve 10, thereby improving the drainage efficiency of the cold water tank 30 and the hot water tank 20 of the water dispenser 1. By providing the confluence channel 500 connected to the first drainage channel 300 and the second drainage channel 400 on the drain valve 10, the water in the cold water tank 30 and the hot water tank 20 can be mixed, and the temperature of the discharged water can be reduced before the water is discharged, thereby avoiding the risk of scalding to the user.

[0073] There are many ways to set the first drainage channel 300 , the second drainage channel 400 and the confluence channel 500 that are interconnected in the drainage valve 10 , which will be described in detail in the following embodiments of the present invention.

[0074] See also Figures 3 to 7 In some embodiments of the present invention, the valve body 100 includes a valve core 120 and a valve housing 110. The valve core 120 is hollow and forms a first drainage section 310 inside. The first drainage channel 300 of the present invention includes the first drainage section 310. The valve housing 110 has an installation cavity 111, and the valve core 120 is arranged in the installation cavity 111. The valve core 120 and the inner wall of the valve housing 110 are partially spaced apart, so that a second drainage section 410 is formed between the outer wall of the valve core 120 and the inner wall of the valve housing 110. The second drainage channel 400 includes the second drainage section 410. A drainage port 600 is formed on the valve housing 110, and the drainage port 600 is connected to the installation cavity 111. Along the water flow direction of the first drainage section 310, the end (i.e., the water outlet end) of the valve core 120 does not extend to the drainage port 600, so that a confluence channel 500 is formed between the end of the valve core 120 and the drainage port 600.

[0075] Please refer to Figures 3 to 5 The utility model can form the first drainage section 310 and the second drainage section 410 by setting the installation cavity 111 inside the valve housing 110 and installing the hollow valve core 120 in the installation cavity 111. If the end of the valve core 120 is not extended to the drain port 600, a confluence channel 500 can be formed between the end of the valve core 120 and the drain port 600. With such a configuration, the drain valve 10 of the utility model embodiment has the first drain channel 300, the second drain channel 400 and the confluence channel 500, and has a simple structure, so that the processing and installation process of the drain valve 10 is relatively convenient and quick, which can reduce production costs and improve production efficiency.

[0076] It should be noted that the valve housing 110 and valve core 120 mentioned above can be injection molded using materials such as polypropylene (PP), polyethylene (PE), and polystyrene (PS). These materials have good toughness and corrosion resistance and can effectively improve the service life of the drain valve 10.

[0077] In order to facilitate the connection between the drain valve 10 and the cold water tank 30 and the hot water tank 20, please refer to Figures 3 to 5 The valve body 100 of the embodiment of the utility model includes a first water inlet pipe 700 and a second water inlet pipe 800. The first water inlet pipe 700 can be connected to the valve housing 110 or to the valve core 120. The first water inlet pipe 700 has a first water inlet section 320, which is in communication with the first drainage section 310, and the first drainage channel 300 also includes the first water inlet section 320. The second water inlet pipe 800 is connected to the valve housing 110 and has a second water inlet section 420, which is in communication with the second drainage section 410, and the second drainage channel 400 also includes the second water inlet section 420.

[0078] In this way, the drain valve 10 of the utility model can be flexibly connected to the cold water tank 30 or the hot water tank 20 through the first water inlet pipe 700 and the second water inlet pipe 800, so as to achieve the communication between the first drainage channel 300 and the second drainage channel 400 and the cold water tank 30 or the hot water tank 20. In addition, the drain valve 10 body 100 can be more adaptable and can be applied to different types of water dispensers 1.

[0079] See also Figures 3 to 5 The valve housing 110 of the embodiment of the utility model is an integrated component with the first water inlet pipe 700 and the second water inlet pipe 800, and the valve housing 110 and the valve core 120 are split components. Such an arrangement can reduce the number of parts of the drain valve 10, simplify the manufacturing process and assembly process, and improve production efficiency. The integrated valve housing 110 has better structural connectivity with the first water inlet pipe 700 and the second water inlet pipe 800, reduces the risk of looseness or leakage between parts, and improves the overall stability and sealing. It is also more convenient for maintenance and replacement, without the need to disassemble multiple parts, saving maintenance costs and time. In addition, the valve housing 110 and the valve core 120 are split components, which can be easy to produce and install.

[0080] In some embodiments of the present invention, please continue to refer to Figures 3 to 5 The valve core 120 includes a first main body 121 and a sealing portion 122. The first main body 121 is disposed in the installation cavity 111 and is spaced apart from the inner wall of the installation cavity 111, and a second drainage section 410 is formed between the first main body 121 and the inner wall of the installation cavity 111. The sealing portion 122 is connected to a section of the first main body 121 close to the first water inlet pipe 700, and is sealedly connected to the inner wall of the installation cavity 111 to isolate the first drainage channel 300 from the second drainage section 410. The first main body 121 and the sealing portion 122 together form the first drainage section 310.

[0081] In summary, the valve core 120 of the utility model is composed of a first main body 121 and a sealing part 122, so it is easy to manufacture and install. After the valve core 120 and the valve housing 110 are installed, a second drainage section 410 is constructed between the first main body 121 and the inner wall of the installation cavity 111, and then the sealing part 122 is sealed and connected to the inner wall of the installation cavity 111, which can effectively isolate the first drainage channel 300 and the second drainage section 410, ensuring that the cold water and the hot water can be separated before mixing and will not mix with each other, thereby effectively preventing the cold water and the hot water in the cold water tank 30 and the hot water tank 20 from mixing and keeping the water temperature stable.

[0082] In order to improve the sealing performance between the valve core 120 and the valve housing 110, the valve body 100 of the embodiment of the utility model further includes a sealing ring 130, which is arranged on the outer peripheral surface of the sealing portion 122 and has an interference fit with the cavity wall of the installation cavity 111. The sealing ring 130 can effectively fill the gap between the sealing portion 122 and the cavity inner wall of the installation cavity 111, and ensure the tight connection between the sealing ring 130 and the cavity wall through the interference fit, thereby improving the sealing performance of the valve body 100 and preventing water leakage.

[0083] For further information, see Figure 5 The outer circumferential surface of the sealing portion 122 is provided with an annular groove 122a, and the sealing ring 130 is fixed in the annular groove 122a. Such a configuration can effectively fix the sealing ring 130, prevent the sealing ring 130 from being displaced or falling off during use, ensure a stable and reliable sealing effect, and also make it easier to install the sealing ring 130 on the sealing portion 122, thereby improving installation efficiency.

[0084] In some embodiments of the present invention, please refer to Figure 3 The inner diameter of the first water inlet section 320 is smaller than the inner diameter of the installation cavity 111, so that a step structure 114 is formed at the connection between the first water inlet section 320 and the installation cavity 111, and the end surface of the sealing portion 122 abuts against the platform surface of the step structure 114. During installation, the sealing portion 122 of the utility model abuts against the step structure 114, and the valve core 120 and the valve housing 110 can be installed in place, and the installation operation is simpler. In addition, the step structure 114 can increase the contact area between the valve core 120 and the valve housing 110, so that the stability of the installation of the valve core 120 and the valve housing 110 can be effectively improved.

[0085] In some other embodiments, the sealing ring 130 can be arranged between the end face of the sealing portion 122 and the terrace surface of the step structure 114, so that after the valve core 120 and the valve housing 110 are installed in place, the sealing ring 130 fills the gap between the valve core 120 and the valve housing 110 by squeezing between the end face of the sealing portion 122 and the terrace surface, thereby improving the sealing performance of the valve core 120 and the valve housing 110. In summary, the sealing ring 130 of the utility model can be arranged between the outer periphery of the sealing portion 122 and the inner wall of the installation cavity 111, or between the end face of the sealing portion 122 and the terrace surface of the step structure 114, or both of the above situations can be arranged at the same time.

[0086] Furthermore, since the inner diameter of the first water inlet section 320 is smaller than the inner diameter of the installation cavity 111, and a step structure 114 is formed at the connection point between the first water inlet section 320 and the installation cavity 111, the inner wall surface of the first water inlet section 320 and the inner wall surface of the first drainage section 310 can be smoothly transitioned. Such a configuration can reduce the resistance and fluctuation of the fluid at the transition point between the first water inlet section 320 and the first drainage section 310, reduce energy loss, and thus improve the operating efficiency of the water supply system. The smooth transition between the inner wall surface of the first water inlet section 320 and the inner wall surface of the first drainage section 310 can also reduce the unevenness of the inner wall surface of the pipeline, reduce the possibility of scale accumulation, extend the service life of the pipeline, reduce the cleaning and maintenance costs, and at the same time reduce the turbulence and eddy current of the fluid when passing through the transition point of the pipeline, improve the efficiency of fluid transmission, and ensure the normal operation of the water supply system.

[0087] In some embodiments of the present invention, please refer to Figure 5 The valve core 120 further includes a plurality of support portions 123, which are arranged at intervals along the outer periphery of the first main body 121 and abut against the inner wall of the installation cavity 111. There is a gap between two adjacent support portions 123, so that water can pass through. The utility model ensures that the valve core 120 will not loosen or fall off during operation by interference fit between the support portion 123 and the inner wall of the installation cavity 111, thereby improving the stability and reliability of the valve.

[0088] In some embodiments of the present invention, please refer to Figure 8 The valve housing 110 and the second water inlet pipe 800 are an integral component, and the valve core 120 and the first water inlet pipe 700 are an integral component. In this way, the valve housing 110 and the second water inlet pipe 800 together form the second drainage channel 400, and the valve core 120 and the second water inlet pipe 800 together form the first drainage channel 300, thereby improving the sealing performance of the first drainage channel 300 and the second drainage channel 400.

[0089] Further, in order to facilitate the installation of the valve housing 110 and the valve core 120, the valve core 120 has an external thread. The valve housing 110 includes a threaded portion 112 and a second body portion 113. The threaded portion 112 has an internal thread, and the second body portion 113 is connected to the threaded portion 112 and has a drain port 600. In addition, the second body portion 113 is spaced apart from the valve core 120 to form a second drain section 410.

[0090] Based on the drain valve 10 of the embodiment of the utility model, the valve core 120 and the valve housing 110 are connected by threads, which makes installation and replacement convenient and quick; at the same time, the internal thread of the threaded part 112 can be tightly matched with the external thread of the valve core 120, thereby enhancing the sealing performance of the valve, effectively preventing leakage, and ensuring the safety and stability of the water supply system.

[0091] In the present invention, the first water inlet pipe 700 and the second water inlet pipe 800 of the drain valve 10 discussed above and below are arranged at an angle. By setting the angle, the space can be better utilized, the pipeline layout is more flexible and compact, and it can adapt to complex installation environments, thereby improving the overall efficiency of the system.

[0092] In some embodiments of the present invention, please refer to Figures 3 to 5 The sealing structure 200 includes a plug 210, which is partially disposed in the confluence channel 500 and abuts against the end of the valve core 120 to block the first drainage section 310, and the plug 210 is partially interference fit with the channel wall of the confluence channel 500 to block the confluence channel 500. It can be understood that the plug 210 is interference fit with the channel wall of the confluence channel 500, which can block the confluence channel 500, thereby blocking the drain port 600, so that when the drain valve 10 is not used, the water in the water dispenser 1 will not be discharged. The plug 210 of the utility model can effectively block the first drainage section 310, thereby preventing the water in the first drainage section 310 and the second drainage section 410 from mixing and temperature-crossing, thereby ensuring the normal operation of the water dispenser 1.

[0093] Furthermore, the utility model can achieve the goal of preventing water from leaking out of the first drainage section 310 and the second drainage section 410 and preventing the first drainage section 310 and the second drainage section 410 from mixing and temperature leakage through the interference fit of the plug 210 and the valve housing 110. It is simple to assemble and disassemble, and is convenient for the use of the drain valve 10.

[0094] It should be noted that the plug 210 is partially disposed in the confluence channel 500, that is, the plug 210 is partially exposed to the outside. When the drain valve 10 is needed, the user applies force on the exposed portion of the plug 210 to pull out the plug 210 located in the valve housing 110, thereby improving the use experience of the drain valve 10.

[0095] In some embodiments of the present invention, the sealing structure 200 includes a plug 210 and a fixing member 220. The plug 210 includes a first blocking portion 211, a first connecting portion 212, and a second blocking portion 213 connected in sequence. The first blocking portion 211 is disposed in the confluence channel 500 and abuts against the end of the valve core 120 to block the first drainage section 310. The second blocking portion 213 extends out of the confluence channel 500 and abuts against one end of the valve housing 110 forming a drainage port 600. The fixing member 220 is detachably connected to the valve housing 110 and is used to press the second blocking portion 213 against one end of the valve housing 110 forming a drainage port 600.

[0096] Based on the drain valve 10 of the embodiment of the utility model, the first blocking portion 211 blocks the first drain section 310, and the second blocking portion 213 blocks the drain port 600, which can effectively block the drain port 600, and can also prevent the water in the first drain section 310 and the second drain section 410 from mixing and temperature-crossing, thereby ensuring the normal operation of the water dispenser 1. Moreover, after the fixing member 220 is connected to the valve housing 110, the second blocking portion 213 can be pressed against the valve housing 110, thereby improving the stability of the plug 210 in blocking the drain valve 10.

[0097] It should be noted that the fixing member 220 and the valve housing 110 may be connected by clamping, screwing, or both, and the present invention does not limit this.

[0098] Furthermore, the plug 210 discussed above and below in the present invention is provided with a deformation space 230, and the deformation space 230 runs from the inside of the first connecting portion 212 to the outer surface of the second blocking portion 213. In this way, the present invention can make the plug 210 have a certain elasticity by providing the deformation space 230 on the plug 210. When subjected to external pressure or extrusion, the plug 210 can be slightly deformed in the deformation space 230 to adapt to the change of external pressure, thereby maintaining better sealing performance. Moreover, the provision of the deformation space 230 can also prevent the plug 210 from being stuck or blocked due to external reasons, thereby ensuring the normal operation of the sealing structure 200 and avoiding equipment failures caused by blockage.

[0099] In order to facilitate the fixing of the drain valve 10 to the water dispenser 1, the valve body 100 further includes a second connection portion 140, which is connected to the valve housing 110 and is detachably connected to the water dispenser 1. In this way, the second connection portion 140 is detachably connected to the water dispenser 1, so that when the valve body 100 needs to be repaired or replaced, the valve body 100 can be conveniently removed from the water dispenser 1 for maintenance operations, which reduces the difficulty and cost of maintenance, and the user can easily replace or adjust the valve body 100 as needed to adapt to different usage environments or needs.

[0100] The second connection part 140 can be in the form of a buckle, a connection hole, or both. When the connection part is configured as a connection hole, the drain valve 10 is fixed relative to the cabinet 40 of the water dispenser 1 by a screw.

[0101] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present utility model. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0102] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drain valve, characterized in that: Applied to a water dispenser, the water dispenser includes a hot water tank and a cold water tank, and the drain valve includes: A valve body having a first drainage channel, a second drainage channel and a confluence channel, wherein the first drainage channel is used to communicate with one of the cold water tank or the hot water tank, the second drainage channel is used to communicate with the other of the cold water tank or the hot water tank, and the first drainage channel and the second drainage channel are both connected to the confluence channel, and the confluence channel has a drainage port; as well as A sealing structure, disposed at the confluence channel and detachably connected to the valve body; Wherein, when the sealing structure is assembled on the valve body, the sealing structure isolates the first drainage channel and the second drainage channel and seals the drain port; after the sealing structure is removed from the valve body, the first drainage channel and the second drainage channel are connected to each other through the confluence channel and water is discharged from the drain port.

2. The drain valve according to claim 1, characterized in that: The valve body comprises: a valve core, constituting a first drainage section, wherein the first drainage channel includes the first drainage section; The valve housing has an installation cavity, the valve core is arranged in the installation cavity, the valve core and the inner wall of the valve housing are partially spaced apart to form a second drainage section, and the second drainage channel includes the second drainage section; Wherein, along the water flow direction of the first drainage section, the end of the valve core does not extend to the drainage port, so that the confluence channel is formed between the end of the valve core and the drainage port.

3. The drain valve according to claim 2, characterized in that: The valve body comprises: a first water inlet pipe connected to the valve housing or the valve core and having a first water inlet section, the first water inlet section being in communication with the first drainage section, the first drainage channel also including the first water inlet section; and The second water inlet pipe is connected to the valve housing and has a second water inlet section. The second water inlet section is communicated with the second drainage section. The second drainage channel also includes the second water inlet section.

4. The drain valve according to claim 3, characterized in that: The valve housing, the first water inlet pipe and the second water inlet pipe are integrated components, and the valve housing and the valve core are separate components.

5. The drain valve according to claim 4, characterized in that: The valve core comprises A first main body portion is disposed in the installation cavity and spaced apart from an inner wall of the installation cavity to form the second drainage section; and a sealing portion connected to a section of the first main body close to the first water inlet pipe and sealed to an inner wall of the installation cavity to isolate the first drainage channel from the second drainage section; Wherein, the first main body portion and the sealing portion together form the first drainage section.

6. The drain valve according to claim 5, characterized in that: The valve body also includes: The sealing ring is arranged on the outer peripheral surface of the sealing portion and is interference fit with the cavity wall of the installation cavity.

7. The drain valve according to claim 6, characterized in that: The outer peripheral surface of the sealing portion is provided with an annular groove for fixing the sealing ring.

8. The drain valve according to claim 5, characterized in that: The inner diameter of the first water inlet section is smaller than the inner diameter of the installation cavity, so as to form a step structure at the connection between the first water inlet section and the installation cavity, and the end surface of the sealing portion close to the first water inlet pipe abuts against the terrace surface of the step structure.

9. The drain valve according to claim 8, characterized in that: The inner wall surface of the first water inlet section and the inner wall surface of the first water discharge section are smoothly transitioned.

10. The drain valve according to claim 5, characterized in that: The valve core also includes A plurality of support portions are arranged at intervals along the outer circumference of the first main body portion and abut against the inner wall of the installation cavity.

11. The drain valve according to claim 3, characterized in that: The valve housing and the second water inlet pipe are integral components, and the valve core and the first water inlet pipe are integral components.

12. The drain valve according to claim 11, characterized in that The valve core has an external thread; the valve housing comprises: a threaded portion having an internal thread; and The second main body is connected to the threaded part and has the drain port, and the second main body is spaced apart from the valve core to form the second drain section.

13. The drain valve according to claim 3, characterized in that: The first water inlet pipe and the second water inlet pipe are arranged at an angle.

14. The drain valve according to any one of claims 2 to 13, characterized in that: The sealing structure comprises: A plug is partially disposed in the confluence channel and abuts against the end of the valve core to block the first drainage section, and is interference-fitted with a channel wall of the confluence channel to block the confluence channel.

15. The drain valve according to any one of claims 2 to 13, characterized in that: The sealing structure comprises: a plug, comprising a first blocking portion, a first connecting portion and a second blocking portion connected in sequence, wherein the first blocking portion is disposed in the confluence channel and abuts against the end of the valve core to block the first drainage section, and the second blocking portion extends out of the confluence channel and abuts against one end of the valve housing forming the drainage port; and A fixing member is detachably connected to the valve housing and is used to press the second blocking portion against one end of the valve housing forming the drain port.

16. The drain valve according to claim 15, characterized in that The fixing member is clamped and / or screwed to the valve housing.

17. The drain valve according to claim 15, characterized in that The plug is provided with a deformation space, and the deformation space penetrates from the inside of the first connecting part to the outer surface of the second blocking part.

18. The drain valve according to claim 13, characterized in that: The valve body also includes: The second connection part is connected to the valve housing, and the second connection part is detachably connected to the water dispenser.

19. A water dispenser, characterized in that: The invention comprises a hot water tank, a cold water tank and a drain valve as claimed in any one of claims 1 to 18, wherein the drain valve is connected to the hot water tank and the cold water tank and is used to mix the hot water in the hot water tank and the cold water in the cold water tank in the confluence channel and discharge them from the drain port after the sealing structure is removed from the valve body.

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