Air valve

Abstract

The utility model discloses an air valve which comprises a valve body, floating block sets are arranged in the valve body, the floating block sets can move relatively, and gas channels are arranged in the floating block sets and used for discharging gas in liquid media contained in the valve body. And the upper end and the lower end of the floating block group are respectively communicated with the opening of the valve main body so as to adjust the exhaust degree of the air valve. According to the air valve, the floating block sets are arranged in the air valve and can move relatively, the floating blocks can automatically adjust the opening and closing degree of the gas channel, namely the exhaust of the nozzle according to the change of the water level, the pressure change in a system can be quickly responded, and compared with an existing single-floating-body structure, the structure is simple and convenient. The pressure control in the air valve can be optimized so as to further optimize the pressure control in the pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to an air valve. BACKGROUND

[0002] Industry contains various pipelines such as system air, nitrogen, gas pipeline etc., and most of the above pipelines need to install air valve, to discharge internal air efficiently, eliminate air bag, ensure water smooth, reduce water hammer impact.

[0003] The air valve in the prior art generally adopts single floating body driving structure and single exhaust passage design, and the design cannot completely meet the accurate requirements of large flow exhaust stage and trace exhaust stage, so that the seal is easy to fail under high pressure difference, leading to air valve failure, affecting process safety and sustainability. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of air valves to solve the above problems.

[0005] The utility model discloses a kind of air valves to solve the above problems.

[0006] An air valve, comprising: a valve body, the inside of valve body is provided with float group, and the float group can be displaced relative, the float group is provided with gas passage, the gas passage is used to discharge gas in liquid medium contained in valve body;

[0007] The upper and lower ends of the float group are respectively connected with the inlet and outlet of the valve body to adjust the exhaust degree of the air valve.

[0008] As a further description of the above technical solution, the float group includes upper float and lower float, the center of the upper float is provided with the gas passage, and the upper end of the lower float is provided with a sealing element corresponding to the position of the gas passage.

[0009] As a further description of the above technical solution, the sealing element is embedded into the top of the lower float.

[0010] As a further description of the above technical solution, the sealing element is a T-shaped sealing gasket.

[0011] As a further description of the above technical solution, the gas passage includes a through groove penetrating through the upper float, and a nozzle is inserted into the through groove.

[0012] As a further description of the above technical solution, the outer diameter of the float group is smaller than the inner diameter of the valve body.

[0013] As a further description of the above technical solution, the valve body is made of stainless steel.

[0014] As a further description of the above technical solution, the inlet of the bottom of the valve body is provided with a perforated plate, and the perforated plate is below the float group.

[0015] As a further description of the above technical solution, the upper flange is detachably mounted above the valve body.

[0016] As a further description of the above technical solution, the upper surface of the upper float is fixed with a sealing ring, and the sealing ring is in contact with the bottom of the upper flange.

[0017] The beneficial effects of the present application are as follows:

[0018] The present application sets a float group in the air valve, and the float groups can move relative to each other, and the float can automatically adjust the opening and closing degree of the gas passage, i.e. the nozzle exhaust, according to the change of water level, which can quickly respond to the pressure change in the system, and compared with the existing single float structure, the present application can optimize the pressure control in the air valve to further optimize the pressure control in the pipeline.

[0019] In order to more clearly illustrate the structural features and effects of the present application, the present application will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional view of the air valve provided by the present application.

[0021] Reference signs: 100, valve body; 200, upper flange; 300, upper float; 301, through groove; 302, nozzle; 400, lower float; 401, sealing element; 500, perforated plate; 600, sealing ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0023] As Figure 1As shown, in one embodiment, an air valve, a valve body 100, the inside of the valve body 100 is provided with a float group, wherein the float group includes an upper float 300 and a lower float 400, the upper float 300 and the lower float 400 are not in direct contact, but under the action of the liquid medium, the float group can be relatively displaced, and a gas passage is arranged in the float group, the gas passage is used to discharge the gas in the liquid medium contained in the valve body 100. Specifically, when there is liquid medium in the air valve, the float group is lifted due to the rising of the water level, so that the gas passage is exposed, and air can be discharged from the gas passage, and when the water level continues to rise to a certain height.

[0024] It can be understood that the higher the water level, the more liquid medium in the valve body 100, and the relatively more air exists, so that more air will be discharged upward from the gas passage, and in the case of reduced gas, the support force on the float group is reduced, so that the float group will drop with the rising of the water level, and finally close the gas passage. The opening degree of the gas passage is automatically adjusted by the float according to the change of the water level, that is, the more liquid, the more air, and the distance between the upper float 300 and the lower float 400 will increase accordingly, so that the space at the bottom of the gas passage increases, so that the gas is discharged faster, and vice versa. The distance between the upper float 300 and the lower float 400 is reduced, so that the space at the bottom of the gas passage is reduced, so that the air is discharged relatively slowly.

[0025] The upper and lower ends of the float group are respectively connected with the inlet and outlet of the valve body 100, so as to adjust the air exhaust degree of the air valve.

[0026] In summary, by arranging the float group in the valve body 100, and the float group can move relatively, the float can automatically adjust the opening and closing degree of the gas passage, that is, the nozzle 302, according to the change of the water level, which can quickly respond to the pressure change in the system. Compared with the existing single float structure, the air valve can optimize the pressure control in the air valve to further optimize the pressure control in the pipeline.

[0027] Optionally, a sealing member 401 corresponding to the position of the gas passage is arranged at the upper end of the lower float 400, when the distance between the upper float 300 and the lower float 400 is reduced to the gas passage and the sealing member 401 is attached, the gas passage stops discharging or supplementing air. The sealing member 401 can be a T-shaped sealing gasket, which is embedded into the top of the lower float 400. When the sealing member 401 is damaged, it can be replaced to ensure that the air valve can be used normally.

[0028] Optionally, the structure of the gas passage is described, the gas passage can be arranged at the center of the upper floating block 300, but can also be arranged according to actual needs, and the position corresponding to the sealing element 401 can be ensured. The gas passage includes a through groove 301 penetrating through the upper floating block 300, and a nozzle 302 is arranged in the through groove, the nozzle 302 protrudes from the lower surface of the lower floating block 400, so that the nozzle 302 can be in contact with the surface of the sealing element 401.

[0029] Optionally, the outer diameter of the floating block group is slightly smaller than the inner diameter of the valve body 100, for example, the diameter difference can be 1-2mm, so that the liquid can pass through.

[0030] Optionally, the valve body 100 is made of stainless steel, which has stronger corrosion resistance than a nodular cast iron casting, and has stable structure and high strength.

[0031] Optionally, the inlet of the valve body 100 is provided with a perforated plate 500, the perforated plate 500 is below the floating block group, the liquid medium in the pipeline can enter through the perforated plate 500, and the perforated plate 500 can prevent impurities from entering.

[0032] Optionally, the upper flange 200 is detachably arranged above the valve body 100, for example, the upper flange 200 is connected with the valve body 100 below by bolts, the upper surface of the upper floating block 300 is fixedly provided with a sealing ring 600, the sealing ring 600 is in contact with the bottom of the upper flange 200, when the upper floating block 300 and the upper flange 200 are in contact, the sealing property of the two can be effectively improved, and gas leakage from the contact position of the two can be avoided.

[0033] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air valve, characterized in that The application relates to a valve body, which is internally provided with a float group, and the float group can be relatively displaced, and the float group is internally provided with a gas passage, which is used for discharging gas in liquid medium contained in the valve body. The upper and lower ends of the float group are respectively connected with the inlet and outlet of the valve body, so as to adjust the exhaust degree of the air valve. The float group comprises upper and lower floats, the center of the upper float is provided with the gas passage, and the upper end of the lower float is provided with a sealing element corresponding to the position of the gas passage.

2. The air valve according to claim 1, characterized in that The sealing element is embedded into the top of the lower float.

3. The air valve of claim 2, wherein, The sealing element is a T-shaped sealing gasket.

4. The air valve of claim 2, wherein, The gas passage comprises a through groove penetrating through the upper float, and a nozzle is inserted into the through groove.

5. The air valve of claim 2, wherein, The outer diameter of the float group is smaller than the inner diameter of the valve body.

6. The air valve of claim 1, wherein, The valve body is made of stainless steel.

7. The air valve of claim 1, wherein, The inlet of the bottom of the valve body is provided with a hole plate, and the hole plate is below the float group.

8. The air valve of claim 1, wherein, An upper flange is detachably arranged above the valve body.

9. The air valve of claim 5, wherein, The upper surface of the upper float is fixed with a sealing ring, and the sealing ring is in contact with the bottom of the upper flange.

10. The air valve of claim 9, wherein, ​

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