Water vapor linkage valve with protective shell

Abstract

The utility model relates to the technical field of equipment of water vapor linkage valves, in particular to a water vapor linkage valve with a protective shell, which comprises a gas valve component, a water valve component and a linkage valve component, the linkage valve component is connected with the gas valve component and the water valve component, the outer side end of the linkage valve component is provided with the shell, and the protective shell is arranged in the shell. A microswitch is arranged in the shell and connected with the linkage valve assembly, a user can be prevented from touching the microswitch through the shell, meanwhile, the stability of the microswitch can be improved, and the sensitivity of the microswitch is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of water-steam linkage valves, and in particular to a water-steam linkage valve with a protective housing. Background Technology

[0002] A water-gas interlock valve, also known as a water-gas interlock device, includes a water control device and a gas control device. Its main components include: an air inlet, a pressure relief valve stem, a water temperature regulating valve, a micro switch, a fire control valve, a solenoid valve, and an air inlet. The function of the water-gas interlock device is to ensure that the gas control valve opens only when the water pressure is sufficient and flowing into the heat exchanger; and to automatically cut off the gas supply when the water flow stops or the pressure is insufficient, preventing damage to the equipment due to water shortage.

[0003] For example, patent CN211562051 U discloses a water-gas linkage device for a gas water heater, including a gas valve body assembly, a water valve assembly, a linkage valve assembly, and a micro switch assembly. It also includes a water inlet cover with a guide hole communicating with the inner cavity of the water inlet cover. One end of the linkage valve assembly is provided with a flange connected to the gas valve body, and the other end is provided with an inner countersunk hole. The linkage valve assembly has an axial guide hole along the axial direction on its wall and a pin guide hole inside the linkage valve assembly. A micro switch seat is provided on the outer wall of the inner countersunk hole. The driving component includes a seat and a driving rod, which passes through the axial guide hole and cooperates with the micro switch. The connector of the water inlet cover is inserted into the inner countersunk hole, and the end of the screw extends into the annular fastening groove.

[0004] The problem with the above technology is that a micro switch base is installed on the outer wall of the inner countersunk hole of the water-vapor linkage device. The micro switch is installed on the micro switch base. The micro switch is a contact mechanism with a small contact interval and a quick-acting mechanism. It performs switching action with a specified stroke and a specified force. The drive rod passes through the axial guide hole and cooperates with the micro switch. Because the contact interval of the switch is relatively small, the micro switch is easily affected by external impacts due to its high sensitivity.

[0005] To address this issue, a water-vapor linkage valve with a protective housing is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a water-gas linkage valve with a protective shell, which can prevent accidental contact and improve the sensitivity of the micro switch.

[0007] The technical solution adopted by this utility model to solve the problem is: a water-gas linkage valve with a protective shell, including a gas valve assembly, a water valve assembly and a linkage valve assembly, wherein the linkage valve assembly is connected to the gas valve assembly and the water valve assembly, a shell is provided on the outer end of the linkage valve assembly, a micro switch is provided inside the shell, and the micro switch is connected to the linkage valve assembly.

[0008] As a further improvement to the above technical solution, a mounting bracket is provided between the gas valve assembly and the water valve assembly, and the housing is mounted on the mounting bracket.

[0009] As a further improvement to the above technical solution, the mounting bracket extends downward with a side plate, which surrounds the housing.

[0010] As a further improvement to the above technical solution, the gas valve assembly includes a gas valve body, on which an inlet and an outlet are provided, and a venting chamber communicating with the inlet and outlet are also provided. The water valve assembly includes a water valve body, on which a water inlet and an outlet are provided, and a water passage chamber communicating with the inlet and outlet are also provided. The linkage valve assembly includes a linkage rod, with both ends of the linkage rod passing through the venting chamber and the water passage chamber, respectively. An internal blockage is provided, and a spring is installed between the blockage and the vent chamber. The blockage is used to disconnect the vent chamber from the air outlet. The end of the linkage rod is connected to the inner end of the blockage. A rubber water diaphragm is dynamically sealed inside the water passage chamber, and the other end of the linkage rod is connected to the inner end of the rubber water diaphragm. A downward-opening through groove is provided between the gas valve body and the water valve body. The middle part of the linkage rod passes through the through groove, and a switch rod is connected to the middle part of the linkage rod. The switch rod is connected to a micro switch.

[0011] As a further improvement to the above technical solution, a mounting base is fixedly installed inside the water passage cavity, a connecting rod is provided at the outer end of the rubber water diaphragm, and a spring is provided between the connecting rod and the mounting base.

[0012] As a further improvement to the above technical solution, a pressure relief valve is provided at the water inlet.

[0013] As a further improvement to the above technical solution, a solenoid valve is provided at the air inlet.

[0014] The beneficial effects of this utility model are: the housing can prevent users from accidentally touching the micro switch, while also increasing the stability and sensitivity of the micro switch. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a top-view structural diagram of the present invention;

[0017] Figure 2 This is a structural diagram of the present invention from an upward perspective;

[0018] Figure 3 This is a bottom view of the present invention from a rear perspective;

[0019] Figure 4 This is a side view of the present invention;

[0020] Figure 5 for Figure 4 A cross-sectional view of section AA.

[0021] In the diagram: 1-Gas valve assembly, 11-Gas valve body, 12-Air inlet, 13-Air outlet, 14-Ventilation chamber, 2-Water valve assembly, 21-Water valve body, 22-Water inlet, 23-Water outlet, 24-Water passage chamber, 3-Linkage valve assembly, 31-Linkage rod, 32-Block, 33-Rubber water diaphragm, 34-Switch lever, 35-Mounting base, 36-Connecting rod, 4-Housing, 5-Mounting bracket, 51-Side plate, 6-Through groove, 7-Pressure relief valve, 8-Solenoid valve. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figures 1 to 5A water-gas linkage valve with a protective housing includes a gas valve assembly 1, a water valve assembly 2, and a linkage valve assembly 3. The linkage valve assembly 3 is connected to the gas valve assembly 1 and the water valve assembly 2. A housing 4 is provided on the outer end of the linkage valve assembly 3. A micro switch (not shown in the figure) is provided inside the housing 4. The micro switch is connected to the linkage valve assembly 3.

[0027] The housing 4 prevents accidental contact with the microswitch by the user, while also increasing the stability and sensitivity of the microswitch.

[0028] In a preferred embodiment, a mounting bracket 5 is provided between the gas valve assembly 1 and the water valve assembly 2 to facilitate the installation of the housing 4, and the housing 4 is mounted on the mounting bracket 5.

[0029] In a preferred embodiment, the mounting bracket 5 extends downward with a side plate 51, which surrounds the housing 4. The side plate 51 can insulate against temperature, preventing the micro switch inside the housing 4 from being affected by external temperature and thus damaging the micro switch.

[0030] In a preferred embodiment, the gas valve assembly 1 includes a gas valve body 11, which is provided with an air inlet 12 and an air outlet 13. The gas valve body 11 is also provided with a ventilation chamber 14 communicating with the air inlet 12 and the air outlet 13. The water valve assembly 2 includes a water valve body 21, which is provided with a water inlet 22 and a water outlet 23. The water valve body 21 is also provided with a water passage cavity 24 communicating with the water inlet 22 and the water outlet 23.

[0031] The linkage valve assembly 3 includes a linkage rod 31, with its two ends passing through the vent chamber 14 and the water passage chamber 24, respectively. A plug 32 is provided in the vent chamber 14, and a spring is provided between the plug 32 and the vent chamber 14. The plug 32 is used to disconnect the connection between the vent chamber 14 and the air outlet 13. The end of the linkage rod 31 is connected to the inner end of the plug 32. A rubber water diaphragm 33 is dynamically sealed in the water passage chamber 24, and the other end of the linkage rod 31 is connected to the inner end of the rubber water diaphragm 33.

[0032] A downward-opening through groove 6 is provided between the gas valve body 11 and the water valve body 21. The middle part of the linkage rod 31 passes through the through groove 6. A switch rod 34 is connected to the middle part of the linkage rod 31. The switch rod 34 is connected to a micro switch.

[0033] When in use, water flows into the water passage chamber 24 from the inlet 22 and out from the outlet 13. At this time, the pressure in the water passage chamber 24 increases, which can push the rubber water diaphragm 33 to move, thereby driving the linkage rod 31 to move, causing the switch rod 34 to move and open the micro switch. At this time, the blockage 32 will also move with the linkage rod 31, so that the vent chamber 14 is connected to the vent outlet 13. The gas can enter the vent chamber 14 from the inlet 12 and be discharged from the vent outlet 13. The spring can reset the linkage rod 31.

[0034] In a preferred embodiment, a mounting base 35 is fixedly installed inside the water passage cavity 24, and a connecting rod 36 is provided at the outer end of the rubber water diaphragm 33. A spring is provided between the connecting rod 36 and the mounting base 35. When the water pressure in the water passage cavity 24 is less than the spring force, the spring can reset the rubber water diaphragm 33, thereby resetting the linkage rod 31 and causing the blockage 32 to disconnect the connection between the vent chamber 14 and the air outlet 13.

[0035] In a preferred embodiment, a pressure relief valve 7 is provided at the water inlet 22. The pressure relief valve 7 can prevent excessive pressure from the water inlet 22 flowing into the water passage chamber 24, which could cause the pipeline to collapse.

[0036] In a preferred embodiment, an electromagnetic valve 8 is provided at the air inlet 12, which can control the amount of gas entering the ventilation chamber 14.

[0037] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A water-gas linkage valve with a protective shell, characterized in that: it comprises a gas valve assembly (1), a water valve assembly (2) and a linkage valve assembly (3), the linkage valve assembly (3) is connected with the gas valve assembly (1) and the water valve assembly (2), the outer side end of the linkage valve assembly (3) is provided with a shell (4), a micro switch is arranged in the shell (4), and the micro switch is connected with the linkage valve assembly (3).

2. The water-gas linkage valve with a protective shell according to claim 1, characterized in that: a mounting bracket (5) is arranged between the gas valve assembly (1) and the water valve assembly (2), and the shell (4) is mounted on the mounting bracket (5).

3. The water-gas linkage valve with a protective shell according to claim 2, characterized in that: the mounting bracket (5) extends downwardly with a side plate (51), and the side plate (51) surrounds the shell (4).

4. The water-gas linkage valve with a protective shell according to claim 1, characterized in that: the gas valve assembly (1) comprises a gas valve body (11), the gas valve body (11) is provided with an air inlet (12) and an air outlet (13), and the gas valve body (11) is further provided with an air chamber (14) communicated with the air inlet (12) and the air outlet (13); the water valve assembly (2) comprises a water valve body (21), the water valve body (21) is provided with a water inlet (22) and a water outlet (23), and the water valve body (21) is further provided with a water cavity (24) communicated with the water inlet (22) and the water outlet (23); the linkage valve assembly (3) comprises a linkage rod (31), both ends of the linkage rod (31) are respectively arranged in the air chamber (14) and the water cavity (24), a plug (32) is arranged in the air chamber (14), a spring is arranged between the plug (32) and the air chamber (14), the plug (32) is used for disconnecting the air chamber (14) from the air outlet (13), the end of the linkage rod (31) is connected with the inner side end of the plug (32), a rubber water diaphragm (33) is arranged in the water cavity (24), and the other end of the linkage rod (31) is connected with the inner side end of the rubber water diaphragm (33); a downwardly open through groove (6) is arranged between the gas valve body (11) and the water valve body (21), the middle part of the linkage rod (31) is arranged in the through groove (6), and a switch pressing rod (34) is connected with the middle part of the linkage rod (31), and the switch pressing rod (34) is connected with the micro switch.

5. The water-gas linkage valve with a protective shell according to claim 4, characterized in that: a mounting seat (35) is fixedly arranged in the water cavity (24), the outer side end of the rubber water diaphragm (33) is provided with a connecting rod (36), and a spring is arranged between the connecting rod (36) and the mounting seat (35).

6. The water-gas linkage valve with a protective shell according to claim 4, characterized in that: a pressure relief valve (7) is arranged at the water inlet (22). ​ ​ ​ ​ ​ ​ ​ ​ 7. A water-steam coupled valve with a protective housing according to claim 4, characterized in that: An electromagnetic valve (8) is arranged at the air inlet (12).

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