Switching and small shaft assembly process water gas linkage valve body

Abstract

The utility model relates to the technical fields of water and air linkage valve, especially to a switch and small shaft assembly process water and air linkage valve body, the utility model discloses the sealing member of small shaft assembly is changed to two interval distribution sealing rings from one sealing ring, forms double sealing structure, even if one of sealing rings fails because of sand hole, ageing and other problems, another sealing ring can still maintain sealing function, greatly reduces the sealing failure probability, effectively blocks the stream of waterway and gas path, protects the gas path system component, including water and air linkage valve body, water control device, gas control device, small shaft assembly and microswitch assembly, water control device and gas control device are arranged respectively in water and air linkage valve body inside, two groups of sealing members form double sealing structure, and two groups of sealing members are located between small shaft body and screw hole, the microswitch assembly includes microswitch and support, the support is fixed on water and air linkage valve body, and the support is fixedly installed with microswitch.

Description

Technical Field

[0001] This utility model relates to the technical field of water-air linkage valves, and in particular to the process of water-air linkage valve bodies for switches and small shaft assemblies. Background Technology

[0002] A water-air interlock valve, also known as a water-air interlock device, consists of a water control device and an air control device. The working principle of a water-air interlock valve is that when a pressure differential water-air interlock valve is supplied with water at its rated pressure, as the water system continuously increases the water pressure, when the water pressure reaches the rated starting pressure, and the water pressure in the water valve's differential pressure disc is greater than that in the interlock valve's differential pressure disc, the push plate mounted on the interlock valve's small shaft assembly, under the pressure of the water valve's differential pressure disc, instantly pushes open the air valve sealing gasket assembly (opening both valves) through the small shaft assembly. Simultaneously, the starting circuit (microswitch opens) is activated. The small shaft assembly, installed inside the differential pressure disc of the linkage valve, serves two functions: 1. Under the rated inlet water pressure, the small shaft pushes the valve spring assembly to open or close under the force of the push plate, allowing the two valves of the water-air linkage valve to open or close smoothly under the rated pressure; 2. It is used to block the water and air circuits of the water-air linkage valve body, preventing water from flowing through the small shaft screw hole into the micro-switch adjustment system of the air circuit during valve operation.

[0003] like Figure 4 , Figure 5 and Figure 6 As shown, the micro switch is mounted on a switch bracket, which is installed at the center horizontal position of the water-air linkage valve body. The small shaft assembly is sealed by a small shaft nut and a sealing ring in conjunction with a screw hole. During use, it was found that the sealing design of the small shaft assembly through a sealing ring is prone to problems such as sand holes and aging of the sealing ring in actual production applications, leading to sealing failure. When the small shaft assembly seal fails, due to structural reasons, the installation position of the micro switch assembly (fork hole) is perpendicular to the water and air inlet direction of the water-air linkage valve body. At this time, water in the differential pressure plate of the water-air linkage valve body will flow to the micro switch through the gap between the small shaft assembly and the screw hole and the fork hole, directly affecting the normal working performance of the micro switch and the durability of the valve body. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a process water-air linkage valve body for a switch and small shaft assembly with improved service life.

[0005] This utility model discloses a water-air linkage valve body with a switch and small shaft assembly. It includes a water-air linkage valve body, a water control device, an air control device, a small shaft assembly, and a micro switch assembly. The water control device and the air control device are respectively disposed inside the water-air linkage valve body and are linked together by the small shaft assembly. The micro switch assembly is electrically connected to the air control device and is used to control the start and stop of the solenoid valve in the air control device. The small shaft assembly includes a small shaft body, a small shaft nut, and a seal. The small shaft nut is sleeved on one end of the small shaft body and threadedly connected to the threaded hole of the water-air linkage valve body. The seal consists of two sealing rings of the same specification. The rings are spaced apart along the axial direction of the small shaft body, and the two sets of seals form a double sealing structure. The two sets of seals are located between the small shaft body and the screw hole. The micro switch assembly includes a micro switch and a bracket. The bracket is fixed to the water-gas linkage valve body, and the micro switch is fixedly installed on the bracket. This utility model changes the sealing of the small shaft assembly from one sealing ring to two spaced sealing rings to form a double sealing structure. Even if one sealing ring fails due to sand holes, aging, or other problems, the other sealing ring can still maintain the sealing function, greatly reducing the probability of sealing failure, effectively blocking the crossflow between the water circuit and the gas circuit, and protecting the gas circuit system components.

[0006] Preferably, the bracket is installed above the water-gas linkage valve body; the installation position and structure of the micro switch and the bracket are redesigned and adjusted so that the micro switch can still maintain normal operation when the small shaft assembly seal fails and leaks water.

[0007] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model changes the sealing element of the small shaft assembly from one sealing ring to two spaced sealing rings to form a double sealing structure. Even if one sealing ring fails due to problems such as sand holes or aging, the other sealing ring can still maintain the sealing function, greatly reducing the probability of sealing failure, effectively blocking the crossflow between the water circuit and the air circuit, and protecting the components of the air circuit system. Attached Figure Description

[0008] Figure 1 This is a front view structural diagram of the present invention;

[0009] Figure 2 This is a top view of the structure of this utility model;

[0010] Figure 3 This is a top view cross-sectional structural diagram of the present invention;

[0011] Figure 4 This is a cross-sectional structural diagram of the small shaft assembly of this utility model;

[0012] Figure 5 This is a front view of the original structure of this utility model before the improvement.

[0013] Figure 6 This is a top view of the original structure of this utility model before the improvement.

[0014] Figure 7 This is a cross-sectional structural diagram of the small shaft assembly before the improvement of this utility model.

[0015] The attached diagram is labeled as follows: 1. Water-gas linkage valve body; 2. Microswitch assembly; 3. Small shaft assembly; 5. Small shaft nut; 6. Seal. Detailed Implementation

[0016] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0017] Example 1

[0018] like Figures 1 to 4 As shown, the present invention relates to a water-air linkage valve body comprising a water-air linkage valve body 1, a water control device, an air control device, a small shaft assembly 3, and a micro switch assembly 2. The water control device and the air control device are respectively disposed inside the water-air linkage valve body 1 and are linked together by the small shaft assembly 3. The micro switch assembly 2 is electrically connected to the air control device and is used to control the start and stop of the solenoid valve in the air control device. The small shaft assembly 3 includes a small shaft body, a small shaft nut 5, and a sealing element 6. The small shaft nut 5 is sleeved on one end of the small shaft body and is threadedly connected to the screw hole of the water-air linkage valve body 1. The sealing element 6 consists of two sealing rings of the same specification, which are spaced apart along the axial direction of the small shaft body. The two sets of sealing elements 6 form a double sealing structure and are located between the small shaft body and the screw hole. The micro switch assembly 2 includes a micro switch and a bracket. The bracket is fixed to the water-air linkage valve body 1, and the micro switch is fixedly installed on the bracket shown.

[0019] The bracket is installed above the water-gas linkage valve body 1, and the sealing ring has the following specifications:

[0020] In this embodiment, the present invention changes the sealing element of the small shaft assembly from one sealing ring to two spaced sealing rings to form a double sealing structure. Even if one sealing ring fails due to problems such as sand holes or aging, the other sealing ring can still maintain the sealing function, greatly reducing the probability of sealing failure, effectively blocking the crossflow between the water circuit and the air circuit, protecting the air circuit system components, and redesigning and adjusting the installation position and structure of the micro switch and bracket. This can effectively prevent water leakage when the small shaft assembly 3 seal fails, without adversely affecting the production of the micro switch.

[0021] The water-air linkage valve body of the switch and small shaft assembly of this utility model, the water-air linkage valve body 1, the micro switch assembly 2, the water control device and the air control device are all existing technologies and will not be described again. The water-air linkage valve body 1, the micro switch assembly 2 and the small shaft nut 5 of the switch and small shaft assembly of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A water-air linkage valve body with a switch and a small shaft assembly, comprising a water-air linkage valve body (1), a water control device, an air control device, a small shaft assembly (3), and a micro switch assembly (2). The water control device and the air control device are respectively disposed inside the water-air linkage valve body (1) and are linked together through the small shaft assembly (3). The micro switch assembly (2) is electrically connected to the air control device and is used to control the start and stop of the solenoid valve in the air control device. The small shaft assembly (3) includes a small shaft body, a small shaft nut (5), and a seal (6). The small shaft nut (5) is sleeved on one end of the small shaft body and is threadedly connected to the screw hole of the water-air linkage valve body (1). The sealing element (6) consists of two sealing rings of the same specification. The two sealing rings are distributed at intervals along the axial direction of the small shaft body. The two sets of sealing elements (6) form a double sealing structure. The two sets of sealing elements (6) are located between the small shaft body and the screw hole. The micro switch assembly (2) includes a micro switch and a bracket. The bracket is fixed on the water-gas linkage valve body (1). The micro switch is fixedly installed on the bracket shown.

2. The switch and small shaft assembly process water-air linkage valve body as described in claim 1, characterized in that, The bracket is installed above the water-gas linkage valve body (1).

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