Lever type exhaust valve

Abstract

The utility model discloses a lever type exhaust valve which comprises a valve body, and the upper end of the valve body is connected with a valve cover. A support arranged at the lower end of the valve deck extends into the valve body, one end of the support is movably connected with a lever structure, and the tail end of the lever structure is connected with a floating ball. A nozzle is arranged at the lower end of the valve deck, and the position of the nozzle corresponds to the position of the sealing structure arranged on the lever structure. Automatic gas discharging and sealing are achieved through a linkage mechanism of a lever structure and the floating ball, the floating ball drives the lever to control opening and closing of the nozzle along with changes of the liquid level, pipeline gas resistance is effectively avoided, and the medium flowing efficiency is guaranteed; stainless steel or non-metal corrosion-resistant materials are adopted, the lever and the floating ball are welded and fixed, and the limiting bolt is matched to prevent jamming or separation, so that the reliability and durability of the structure are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a lever-type exhaust valve. Background Technology

[0002] Most industrial pipelines, such as water supply, hot water, and heating pipelines, need to be equipped with air vents to remove accumulated gas inside the pipelines, thereby maintaining the normal operating efficiency of the system, avoiding equipment damage and safety hazards, and improving system efficiency.

[0003] Traditional micro-venting valves suffer from rust on components, jamming failure due to unreliable connection structure, and insensitive venting-sealing action with insufficient sealing during long-term operation, which seriously affects the normal use of the venting valve and may even affect the entire process. Utility Model Content

[0004] The purpose of this utility model is to provide a lever-type exhaust valve in order to solve the above problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] Design a lever-type exhaust valve, comprising: a valve body, wherein a valve cover is connected to the upper end of the valve body;

[0007] The bracket provided at the lower end of the valve cover extends into the valve body. One end of the bracket is movably connected to a lever structure, and the end of the lever structure is connected to a float.

[0008] A nozzle is provided at the lower end of the valve cover, and the position of the nozzle corresponds to the position of the sealing structure provided on the lever structure.

[0009] As a further description of the above technical solution, the lever structure includes a pin portion, a straight portion, and a raised portion connected to the valve cover.

[0010] As a further description of the above technical solution, the sealing structure is inlaid on the surface of the straight portion.

[0011] As a further description of the above technical solution, the float has a protrusion on its outer surface, and the surface of the protrusion is flat. The protrusion is welded to the raised portion.

[0012] As a further description of the above technical solution, the valve cover is provided with a first outlet and a second outlet, wherein the first outlet corresponds to the position of the nozzle.

[0013] As a further description of the above technical solution, an inlet is provided at the bottom of the valve body.

[0014] As a further description of the above technical solution, the sealing structure is a T-shaped sealing gasket.

[0015] As a further description of the above technical solution, a bolt passes through the bottom of the valve cover, and the position of the bolt corresponds to the position of the raised part of the lever structure.

[0016] As a further description of the above technical solution, the float is made of metal or non-metal.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention achieves automatic gas discharge and sealing through the linkage mechanism of lever structure and float. The float drives the lever to control the opening and closing of the nozzle as the liquid level changes, effectively avoiding gas blockage in the pipeline and ensuring the efficiency of medium flow. The use of stainless steel or non-metallic corrosion-resistant materials and the welding and fixing design of lever and float, along with limit bolts to prevent jamming or detachment, significantly improves the reliability and durability of the structure.

[0019] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the lever-type exhaust valve of this utility model.

[0021] Reference numerals: 100, valve body; 110, inlet; 200, valve cover; 210, first outlet; 220, second outlet; 300, lever structure; 310, pin shaft part; 320, straight part; 321, sealing structure; 330, raised part; 400, nozzle; 500, float; 510, protrusion; 600, bracket. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, in one embodiment, a lever-type exhaust valve includes a valve body 100, an inlet 110 is provided at the lower end of the valve body 100, and a valve cover 200 is connected to the upper end of the valve body 100.

[0024] A bracket 600 provided at the lower end of the valve cover 200 extends into the valve body 100. One end of the bracket 600 is movably connected to a lever structure 300, and the end of the lever structure 300 is connected to a float ball 500.

[0025] A nozzle 400 is provided at the lower end of the valve cover 200. The position of the nozzle 400 corresponds to the position of the sealing structure 321 provided on the lever structure 300. When the float 500 floats upward, the float 500 drives the end of the lever structure 300 to move upward, thereby causing the sealing structure 321 to seal the nozzle 400 and prevent gas from being discharged. Conversely, when the float 500 falls, the gas is discharged from the nozzle 400, thus realizing the automatic discharge of gas.

[0026] Understandably, when gas is present in the pipeline, the float 500 pulls down one end of the lever structure 300 due to gravity, causing the lever to tilt. At this time, a gap is formed between the sealing structure 321 on the lever surface and the nozzle 400, and air is discharged through the gap between the sealing structure 321 and the vent hole, forming an vent. As the gas is discharged, liquid fills the valve body 100, and the water level rises, causing the float 500 to float upwards under buoyancy, which drives the lever to gradually return to its original position. The silicone sealing plug at the end of the lever and the nozzle 400 completely press against the vent hole, achieving a seal. At this time, the vent valve enters the closed state.

[0027] Optionally, the lever structure 300 includes a pin portion 310 connected to the valve cover 200, a straight portion 320, and a raised portion 330. The pin portion 310 is connected to the bracket 600 at the lower end of the valve cover 200 and is located on the leftmost side of the lever structure 300, allowing the entire lever structure 300 to move around the leftmost pin. A sealing structure 321 is embedded in the straight portion 320. The sealing structure 321 can be a T-shaped sealing gasket made of silicone, which can effectively seal the bottom of the nozzle 400. The rightmost part is the raised portion 330, which is welded to the protrusion 510 on the outside of the float 500, ensuring sufficient weld strength to effectively prevent the lever structure 300 from getting stuck or from separating from the float 500 during movement. At the same time, the welding of the lever structure 300 to the float 500 limits the movement path of the float 500, preventing the float 500 from failing to accurately lift the lever structure 300 when it rises.

[0028] Optionally, the valve cover 200 is provided with a first outlet 210 and a second outlet 220. The first outlet 210 corresponds to the position of the nozzle 400 and is mainly used to discharge gas (such as air) accumulated in the pipeline. When there is a lot of gas in the pipeline, the gas is discharged through this outlet to avoid air resistance affecting the system operation (such as air resistance in water supply and heating pipelines, which will reduce the delivery efficiency) and ensure the smooth flow of the medium in the pipeline. The second outlet 220 can have multiple functions. In some embodiments, when negative pressure occurs in the pipeline, the second outlet 220 can draw in air to prevent the pipeline from deforming or breaking due to excessive negative pressure. In other embodiments, the second outlet 220 can be used for drainage or to connect to equipment such as pressure gauges to monitor pipeline pressure, thereby improving the functionality and flexibility of the air release valve.

[0029] Optionally, a bolt is inserted through the bottom of the valve cover 200. The position of the bolt corresponds to the position of the raised part 330 of the lever structure 300. The bolt can not only connect the valve body 100 and the valve cover 200, but also limit the maximum position of the end of the lever structure 300 and the float 500 to float, so as to prevent the lever from moving beyond the maximum height for a long time, causing the lever structure 300 to deform and affecting normal use.

[0030] Optionally, the float 500 can be made of metal or non-metal. The metal material can be stainless steel, which has good corrosion resistance and strength. Alternatively, the float 500 can be made of non-metallic materials, such as PP plastic or a mixture of PP plastic and fiberglass, which has sufficient resistance to hydrostatic pressure and strength.

[0031] Optionally, the valve body 100, valve cover 200, and internal lever structure 300 can be made of stainless steel, which is structurally stable and strong, not easy to rust, and daily maintenance only requires checking the float 500 and the condition of the seals, resulting in low repair and maintenance costs.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lever-type exhaust valve, characterized in that, include: Valve body, the upper end of which is connected to a valve cover; The bracket provided at the lower end of the valve cover extends into the valve body. One end of the bracket is movably connected to a lever structure, and the end of the lever structure is connected to a float. A nozzle is provided at the lower end of the valve cover, and the position of the nozzle corresponds to the position of the sealing structure provided on the lever structure.

2. The lever-type exhaust valve according to claim 1, characterized in that, The lever structure includes a pin portion, a straight portion, and a raised portion connected to the valve cover.

3. The lever-type exhaust valve according to claim 2, characterized in that, The sealing structure is embedded in the surface of the straight section.

4. The lever-type exhaust valve according to claim 2, characterized in that, The float has a protrusion on its exterior, and the surface of the protrusion is flat. The protrusion is welded to the raised portion.

5. The lever-type exhaust valve according to claim 1, characterized in that, The valve cover is provided with a first outlet and a second outlet, wherein the first outlet corresponds to the position of the nozzle.

6. The lever-type exhaust valve according to claim 1, characterized in that, An inlet is provided at the bottom of the valve body.

7. The lever-type exhaust valve according to claim 1, characterized in that, The sealing structure is a T-shaped sealing gasket.

8. The lever-type exhaust valve according to claim 1, characterized in that, A bolt passes through the bottom of the valve cover, and the position of the bolt corresponds to the position of the raised part of the lever structure.

9. The lever-type exhaust valve according to claim 1, characterized in that, The float can be made of metal or non-metal.

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