Vertical automatic exhaust valve

Abstract

The utility model discloses a vertical automatic exhaust valve, and mainly relates to the field of exhaust valves. Comprising a valve body, the bottom of the valve body is communicated with a pipeline, a valve cover is arranged on the valve body, a valve bonnet is arranged at the top of the valve cover, a floating ball is movably arranged in a cavity of the valve body, a T-shaped valve element is arranged in the valve bonnet in a sliding mode, the top of the valve element can block the valve cover, the bottom of the valve element is connected with the floating ball, and an exhaust hole is formed in one side of the valve bonnet. The exhaust valve has the advantages of being free of complex structures and small parts, not prone to being blocked and rusted, capable of achieving rapid exhaust and rapid air suction, not prone to being blocked, good in sealing effect, capable of avoiding the phenomenon of water leakage and more convenient and practical, and the exhaust valve only exhausts air and does not drain water after the valve element is blocked.

Description

Technical Field

[0001] The utility model relates to the field of exhaust valves, in particular to a vertical automatic exhaust valve. Background Art

[0002] Automatic exhaust valve is a device used to exhaust during the operation of HVAC system and HVAC system. During the operation of HVAC system and HVAC system, the gases released when water is heated, such as hydrogen and oxygen, will cause many adverse effects, which will damage the system and reduce the thermal effect. If these gases cannot be discharged in time, many adverse consequences will occur. Such as: corrosion caused by oxidation; the formation of air pockets in the radiator; the unsmooth and unbalanced circulation of hot water, which makes some radiators partially not hot; the noise when the pipeline is running with gas; the vortex phenomenon of the circulating pump. Therefore, the exhaust gas in the system must be discharged in time, which shows the important role of using automatic exhaust valve.

[0003] At present, the internal components of the exhaust valve are small, the thermal water contains a lot of impurities and rust, and it is high-temperature water with frequent pressure fluctuations. In this use environment, the small parts of the exhaust valve are often misaligned or the internal lever structure is rusted. Once the parts are misaligned or the internal lever is rusted, the exhaust hole cannot be closed and water leakage will occur, causing flooding in the user's home and causing property losses. When the exhaust valve is blocked or damaged and cannot be automatically exhausted, the air blockage in the pipeline during the heating period will make the heating in the user's home not hot. Therefore, high-point exhaust is the key work before the heating season, and the workload is huge, which makes the labor intensity high. Some exhaust valves use ejectors to seal the exhaust holes, which have poor sealing. If the pressure is too low, the exhaust and drainage will occur, affecting the use. Utility Model Content

[0004] The purpose of the utility model is to provide a vertical automatic exhaust valve, which has no complex structure and small parts, is not easy to get stuck and rust, can achieve rapid exhaust and rapid air intake, is not easy to be blocked, and after the valve core is sealed, the exhaust valve only exhausts but does not drain water, has a good sealing effect, avoids water leakage, and is more convenient and practical.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A vertical automatic exhaust valve comprises a valve body whose bottom is connected to a pipeline, a valve cover is arranged on the valve body, a valve cap is arranged on the top of the valve cover, a float is movably arranged in the cavity of the valve body, a T-shaped valve core is slidably arranged in the valve cover, the top of the valve core can seal the valve cover, the bottom of the valve core is connected to the float, and an exhaust hole is opened on one side of the valve cap.

[0007] Furthermore, a fixing plate is provided at one end of the valve cover close to the float, the valve core passes through the fixing plate and is slidably connected to the fixing plate, and a spring is provided outside the valve core, and the spring is located between the top of the valve core and the fixing plate.

[0008] Furthermore, a sealing rubber pad is provided on the top of the valve core.

[0009] Furthermore, the gravity of the float is greater than the elastic force of the spring.

[0010] Furthermore, a plurality of through grooves parallel to the central axis of the valve body are provided on the outer side of the float along the circumferential direction.

[0011] Furthermore, a filter screen is provided at the bottom end of the valve body.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The overall structure of this patent is simple, without complex structures and small parts, and it is not easy to get stuck. The air outlet hole of the valve cover is relatively large, which can quickly exhaust and inhale air, and is not easy to be blocked. After water enters the valve body, it drives the float to float up, so that the top of the valve core supports and blocks the top channel of the valve cover. At this time, the exhaust valve only exhausts but does not drain water, and the gas is discharged from the exhaust hole through the air outlet hole of the valve cover, and the water is blocked in the valve body, with a good sealing effect to avoid water leakage; and the valve cap is a protective device for the air outlet hole of the valve cover. After the valve cap is fully tightened, the exhaust hole is closed. At this time, the exhaust valve is completely closed and does not exhaust or drain water. After twisting it outward, the exhaust hole is exposed, so that the gas can be discharged through the air outlet hole of the valve cover, and exhaust can be carried out. After the valve cap is completely unscrewed, the valve core can be pressed down to open the top opening of the valve cover to force water to drain for flushing, which is more convenient and practical to meet the needs of heating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a structural sectional view of the utility model.

[0015] Attached Figure 2 It is the attachment of the utility model Figure 1 Enlarged view of the structure of part A in the middle.

[0016] Attached Figure 3 It is the attachment of the utility model Figure 1 Enlarged view of the structure of part B in the middle.

[0017] Numbers shown in the accompanying drawings:

[0018] 1. Valve body; 2. Valve cover; 3. Valve cap; 4. Float; 5. Valve core; 6. Exhaust hole; 7. Fixed plate; 8. Spring; 9. Sealing pad; 10. Through groove; 11. Filter screen. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0020] The utility model discloses a vertical automatic exhaust valve, the main structure of which includes a valve body 1 whose bottom is connected to a pipeline, a valve cover 2 being provided on the valve body 1, an air outlet hole penetrating the valve cover 2 being provided in the middle of the valve cover 2, a valve cap 3 being threadedly connected to the top of the valve cover 2, a floating ball 4 being movably provided in the cavity of the valve body 1, a T-shaped valve core 5 being slidably provided in the valve cover 2, a T-shaped head on the top of the valve core 5 being able to block the air outlet hole of the valve cover 2, the bottom of the valve core 5 being connected to the floating ball 4, the position of the valve core 5 in the valve cover 2 being adjusted by the floating of the floating ball 4, an exhaust hole 6 being provided on one side of the valve cap 3, and the gas in the pipeline entering the valve body 1, and then discharged from the exhaust hole 6 through the air outlet. When there is no water in the pipeline, the float 4 sinks, driving the valve core 5 to move downward, the air hole of the valve cover 2 opens and connects with the exhaust hole 6. When the pipeline is filled with water, the gas enters the valve body 1 from the bottom and is discharged from the exhaust hole 6. At this time, the exhaust valve is in a state of rapid and large-scale exhaust. When the pipeline is exhausted and is full of water, water enters the valve body 1 from the bottom. After filling the valve body 1, the float 4 will be lifted by the buoyancy. At this time, the float 4 pushes the valve core 5 to move up to block the air hole, and the valve core 5 and the air hole will be pressed by the water pressure under pressure. The air hole is in a completely closed state to avoid water leakage. After the exhaust valve has exhausted the gas, it is in a closed state, so it only exhausts air but does not drain water.

[0021] Preferably, a fixing plate 7 is provided at one end of the valve cover 2 near the float 4, the valve core 5 passes through the fixing plate 7 and is slidably connected to the fixing plate 7, a spring 8 is arranged on the outer sleeve of the valve core 5, and the spring 8 is located between the top of the valve core 5 and the fixing plate 7. The gravity of the float 4 is greater than the elastic force of the spring 8, and the sliding direction of the valve core 5 can be limited by the fixing plate 7, thereby ensuring the sealing of the valve core 5 after blocking the air hole of the valve cover 2, and the valve core 5 can be firmly pressed against the air hole of the valve cover 2 under the elastic force of the spring 8, thereby further ensuring good sealing.

[0022] Preferably, a sealing rubber pad 9 is provided on the top of the valve core 5, and the sealing rubber pad 9 is located at the contact position between the valve core 5 and the air vent for better sealing.

[0023] Preferably, the outer side of the float 4 is provided with a plurality of through grooves 10 parallel to the central axis of the valve body 1 along the circumferential direction. When water is injected into the valve body 1 to float the float 4, the gas in the valve body 1 can enter the valve cover 2 through the plurality of through grooves 10, ensuring that the gas in the valve body 1 can be discharged. Moreover, after the pipeline is full of water and full pressure, gas will still be precipitated. The gas flows upward through the pipeline, flows into the exhaust valve at the top and accumulates above the valve body 1. As the gas gathers more and more, the water level in the exhaust valve body 1 will be squeezed down by the gas, and the float 4 will drop with the water level, driving the valve core 5 to drop, and the internal gas will flow into the valve cover 2 through the through grooves 10 and be discharged through the exhaust hole 6. At this time, the exhaust valve is in a trace exhaust state.

[0024] Preferably, a filter screen 11 is provided at the bottom end of the valve body 1 to prevent impurities in the pipeline from entering the valve body 1 .

[0025] Embodiment: A vertical automatic exhaust valve comprises a valve body 1 whose bottom is connected to a pipeline through an external hexagonal nut, a valve cover 2 is threadedly connected to the valve body 1, and the valve cover 2 and the valve body 1 are sealed by a rubber gasket, a vent hole is provided in the middle of the valve cover 2, a valve cap 3 is threadedly connected to the top of the valve cover 2, and the valve cover 2 can protect the valve cover 2, a float 4 is movably provided in the cavity of the valve body 1, and a plurality of through grooves 10 parallel to the central axis of the valve body 1 are circumferentially provided on the outer side of the float 4, a T-shaped valve core 5 is slidably provided in the vent hole of the valve cover 2, and a sealing rubber gasket is provided on the side of the top of the valve core 5 that contacts the vent hole port 9, and the top of the valve core can block the air vent of the valve cover 2, a fixing plate 7 is provided at one end of the valve cover 2 near the float 4, the valve core 5 penetrates the fixing plate 7 and is slidably connected with the fixing plate 7, a spring 8 is arranged outside the valve core 5, the gravity of the float 4 is greater than the elastic force of the spring 8, the spring 8 is located between the top of the valve core 5 and the fixing plate 7, the bottom of the valve core 5 is connected with the float 4, an exhaust hole 6 is opened on one side of the valve cap 3, the valve cap 3 is partially screwed out of the valve cap 2 to connect the exhaust hole 6 with the air vent, and the valve cap 3 can close the exhaust hole 6 after being fully tightened, and a filter screen 11 is provided at the bottom of the valve body 1.

[0026] The exhaust valve is installed at the high point of the pipeline. When the pipeline is dry, the float 4 sinks, and the gravity of the float 4 is greater than the elastic force of the spring 8, compressing the spring 8. After the spring 8 is compressed, the valve core 5 moves downward, the air vent is opened, and the valve cap 3 is screwed to connect the exhaust hole 6 with the valve cover 2. When the pipeline is filled with water, the gas enters the exhaust valve from the bottom, flows through the groove of the float 4 into the valve cover 2, and is finally discharged from the exhaust hole 6. At this time, the exhaust valve is in a state of rapid and large-scale exhaust;

[0027] When the exhaust in the pipeline is completed and the pipeline is full of water, water enters the exhaust valve through the filter screen 11. After filling the valve body 1, the float 4 is lifted by the buoyancy. At this time, the gravity of the float 4 disappears, and the spring 8 recovers its deformation to squeeze the valve core 5 and the air hole to close. The valve core 5 and the air hole will be pressed tightly by the water pressure under pressure. The annular sealing rubber ring set at the contact position between the valve core 5 and the air hole is used for better sealing. At this time, the air hole of the valve cover 2 is in a completely closed state, and the exhaust valve is in a closed state after exhausting the gas, so it only exhausts the gas but does not drain the water;

[0028] After the pipeline is full of water and full of pressure, there will still be gas precipitation. This part of gas flows upward through the pipeline, flows into the exhaust valve at the top and accumulates in the valve cover 2. As the gas gathers more and more, the gas squeezes the water in the valve body 1 to lower the water level. The float 4 drops with the water level, driving the valve core 5 to drop, and the air hole opens to discharge this part of gas. At this time, the exhaust valve is in a trace exhaust state;

[0029] When the pipeline is drained, the water in the valve body 1 is discharged, the float 4 drops, driving the valve core 5 to drop and squeeze the spring 8. The top of the air vent opens to inhale air to prevent negative pressure from occurring in the pipeline. At this time, the exhaust valve is in an air-intake state.

[0030] The valve cap 3 is a vent protection device, with an exhaust hole 6 on the side for exhaust and air intake. After the valve cap 3 is fully tightened, the exhaust hole 6 is blocked, and the exhaust valve is completely closed without exhaust or water discharge. After partially unscrewing the valve cap 3, the exhaust hole 6 is exposed for exhaust. After all the valve caps are unscrewed, the valve core 5 can be pressed down to force the vent to open for water discharge and flushing. The float 4 is designed as a cylinder, and the valve body 1 is relatively large. The float 4 has a large space for moving up and down, and the exhaust is fast for sensitive water pressure fluctuations.

Claims

1. A vertical automatic exhaust valve, comprising a valve body (1) whose bottom is connected to a pipeline, a valve cover (2) being provided on the valve body (1), and a valve cap (3) being provided on the top of the valve cover (2), characterized in that: A floating ball (4) is movably arranged in the cavity of the valve body (1), a T-shaped valve core (5) is slidably arranged in the valve cover (2), the top of the valve core (5) can seal the valve cover (2), the bottom of the valve core (5) is connected to the floating ball (4), and an exhaust hole (6) is opened on one side of the valve cap (3).

2. According to claim 1, a vertical automatic exhaust valve is characterized in that: A fixing plate (7) is provided at one end of the valve cover (2) near the float (4); the valve core (5) passes through the fixing plate (7) and is slidably connected to the fixing plate (7); a spring (8) is provided on the outer sleeve of the valve core (5); and the spring (8) is located between the top of the valve core (5) and the fixing plate (7).

3. According to claim 1, a vertical automatic exhaust valve is characterized in that: A sealing rubber pad (9) is provided on the top of the valve core (5).

4. According to claim 2, a vertical automatic exhaust valve is characterized in that: The gravity of the floating ball (4) is greater than the elastic force of the spring (8).

5. The vertical automatic exhaust valve according to claim 1, characterized in that: The outer side of the float ball (4) is provided with a plurality of through grooves (10) along the circumferential direction and parallel to the central axis of the valve body (1).

6. The vertical automatic exhaust valve according to claim 1, characterized in that: A filter screen (11) is provided at the bottom end of the valve body (1).

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