Adjustable exhaust valve

Abstract

The utility model discloses an adjustable exhaust valve, relates to the technical field of exhaust valves, and solves the problem that the exhaust trigger pressure of an existing automatic exhaust valve cannot be adjusted. The shell is provided with a communicating port communicated with an inner cavity of the shell and an exhaust hole, the inlet side and the outlet side of the exhaust hole are both provided with sealing pieces, a valve element is arranged on the exhaust hole between the sealing pieces on the two sides in a sliding mode, the valve element is connected with an adjusting assembly, and the adjusting assembly can enable the valve element to be matched with the sealing piece on the inlet side. A floating piece is arranged in an inner cavity of the shell, and the valve element can be triggered to slide when the floating piece moves. According to the regulating valve, the valve element is arranged, the sealing pieces are arranged on the two sides, in the initial state, the regulating valve can be matched with the sealing piece on one side under the initial pressure applied by the regulating assembly to achieve low-pressure sealing, and the initial exhaust triggering pressure is set for a connected pipeline. Under the adjusting effect of the adjusting assembly, the needed exhaust triggering pressure threshold value in the exhaust state can be adjusted, and the adaptation requirements of different scenes are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to exhaust valve technical field, especially adjustable exhaust valve. BACKGROUND

[0002] At present, the automatic exhaust valve at home and abroad is mostly a connecting rod structure, which can realize automatic exhaust when reaching a certain pressure interval. The basic working principle is that the elastic compensation such as a spring piece, a spring, etc. is arranged inside the exhaust valve to provide the required pressure of the sealing gasket. With the rising and falling of the liquid level in the exhaust valve, the elastic compensation part acts to realize the exhaust and sealing functions. This type of exhaust valve can solve the problem that the single float type exhaust valve cannot realize both sealing and exhaust in a large pressure range. The single float type exhaust valve is prone to liquid leakage when the design exhaust pressure is high, and cannot exhaust at high pressure when the design exhaust pressure is low. The existing automatic exhaust valve is also limited by the structure, and has a large size, which cannot be miniaturized.

[0003] In addition, the existing automatic exhaust valve can only be applied to low pressure or high pressure systems, and the structure form will change greatly in different application scenarios. For example, the exhaust valve used in a low pressure system uses a low hardness sealing material to reduce the possible medium leakage during the rising and exhaust process, resulting in a low upper limit of the sealing pressure. If a high hardness sealing material is replaced, the upper limit of the sealing pressure can be improved, and the volume of the float needs to be increased by a multiple relationship, and it is difficult to design the elastic compensation part, which is prone to liquid leakage during the rising and exhaust process.

[0004] For example, a float type exhaust valve disclosed in Chinese patent application No. CN111594658A solves the problems of complex structure and high production cost of the existing exhaust valve. The exhaust valve includes a valve shell, the valve shell is provided with an inner cavity, the upper end of the valve shell is provided with an exhaust hole communicating with the inner cavity, the lower end of the valve shell is provided with a water inlet hole communicating with the inner cavity, a float capable of moving in the vertical direction is arranged in the inner cavity, the upper end of the float is provided with a sealing part capable of sealing the exhaust hole, and the float and the sealing part are of an integrated structure. In the application, the sealing part and the float are designed as an integrated structure, which can effectively simplify the overall structure of the exhaust valve and reduce the production cost.

[0005] However, this scheme is still a single float type exhaust valve. In the state of low air pressure and low liquid level, the float does not contact the sealing element, the connected pipeline is directly connected with the outside during the initial pressure rising process, the exhaust trigger pressure of the pipeline cannot be set to realize the initial sealing, and the exhaust trigger pressure is not adjustable, so the application scenario is relatively single. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the above background art, the utility model provides an adjustable exhaust valve, which solves the problem of unadjustable exhaust trigger pressure of the existing automatic exhaust valve.

[0007] The utility model discloses a technical scheme is as follows: an adjustable exhaust valve, including the casing, be equipped with the communicating port and the exhaust hole of the intercavity communication of casing, the import side and the export side of exhaust hole are equipped with the sealing element, the exhaust hole between two side sealing elements is slidably equipped with the valve core, the valve core is connected with the adjusting assembly, and the adjusting assembly can make the valve core cooperate with the sealing element of import side, and the intercavity of casing is equipped with the float, and the float can trigger the valve core sliding when moving.

[0008] Preferably, the valve core comprises a core body for cooperating with the sealing element, and guide columns are arranged at both ends of the core body.

[0009] Preferably, the sealing element comprises an upper sealing element and a lower sealing element, and both the upper sealing element and the lower sealing element are sealing rings or sealing pads.

[0010] Preferably, the adjusting assembly comprises a spring, one end of the spring is connected with the guide column, the other end of the spring cooperates with an adjusting cap, and the adjusting cap is threadedly connected with the casing.

[0011] Preferably, the casing comprises an outer casing, the outer casing is threadedly connected with an upper cover, and the communicating port and the exhaust hole are arranged on the outer casing and the upper cover respectively.

[0012] Preferably, the float is provided with a trigger column at the top, and the trigger column cooperates with the valve core.

[0013] The utility model discloses the beneficial effects are as follows:

[0014] By arranging the casing, a support connection base is provided for the whole adjusting valve; by arranging the valve core and the sealing elements on both sides, the valve core can cooperate with the sealing element on one side to realize low-pressure sealing under the initial pressure of the adjusting assembly in the initial state, so as to set the initial exhaust trigger pressure for the connected pipeline. Meanwhile, the exhaust trigger pressure threshold required when entering the exhaust state can be adjusted under the adjusting effect of the adjusting assembly, so as to realize the adaptive requirements of different scenes. When exhausting, the valve core is separated from the sealing element by the gas, so as to realize exhaust; when liquid enters, the float can push the valve core to cooperate with the sealing element on the other side, so as to realize sealing and avoid liquid leakage during the exhaust process. The exhaust valve has simple and reliable structure, is convenient to adjust, and has wide adaptability. BRIEF DESCRIPTION OF DRAWINGS

[0015] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic cross-sectional view of the three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the adjustment component of this utility model;

[0018] In the diagram: 1: housing, 2: connection port, 3: valve core, 4: adjustment component, 5: floating component, 31: core, 32: guide post, 6: upper seal, 7: lower seal, 41: spring, 42: adjustment cap, 11: outer housing, 12: upper cover, 51: trigger post. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 As shown in Embodiment 1, an adjustable exhaust valve includes a housing 1, which provides a supporting connection base for other components of the regulating valve. The housing 1 has a connecting port 2 and an exhaust port that connect to the inner cavity of the housing 1. The connecting port is used to connect to a gas pipeline during actual use. Both the inlet and outlet sides of the exhaust port are provided with seals. A valve core 3 is slidably mounted on the exhaust port between the two seals. The valve core 3 is connected to an adjusting assembly 4, which applies an initial pressure to the valve core, enabling the valve core 3 to cooperate with the inlet-side seal to achieve a low-pressure seal, thus setting an initial exhaust trigger pressure for the connected pipeline. A floating element 5 is provided inside the inner cavity of the housing 1. When the floating element 5 moves, it triggers the valve core 3 to slide. In this embodiment, the adjusting assembly applies a certain initial force to the valve core to ensure that the minimum gas pressure value required for the exhaust process is reached. Under its adjusting action, the initial pressure can be adjusted, thereby adjusting the exhaust trigger pressure threshold required to enter the exhaust state, achieving adaptability to different scenarios.

[0021] In this embodiment, by providing seals on both sides of the movable valve core, under low pressure, the pressure in the connected pipeline is less than the initial force applied to the valve core by the regulating component. At this time, the valve core maintains contact with the seal on the inlet side to achieve a low-pressure seal. After the pressure increases and exceeds the minimum exhaust pressure threshold, the gas pushes the valve core upward, opening the seal and allowing exhaust. Once the gas is exhausted, liquid enters the housing, the floating component rises, and pushes the valve core upward until it contacts the seal on the outlet side, achieving a seal and preventing liquid leakage during the exhaust process.

[0022] In a further specific embodiment, the housing 1 includes an outer shell 11, which is threadedly connected to the upper cover 12 for easy opening for maintenance and installation of the floating component. A connecting port 2 and an exhaust port are respectively located on the outer shell 11 and the upper cover 12. In this embodiment, the outer shell is circular, with the connecting port and exhaust port coaxially positioned. A sealing ring is provided between the outer shell 11 and the upper cover 12, and a sealing ring is also provided on the connecting port 2. Furthermore, the opening of the connecting port 2 has an external thread, allowing direct connection to an actual gas pipeline via a threaded connection during use, with a sealing ring for sealing. All components of this exhaust valve are arranged sequentially along the axial direction, resulting in a simple and reliable structure, convenient adjustment, and a wide range of applications.

[0023] Example 2: An adjustable exhaust valve, based on Example 1, such as... Figure 2 As shown, the valve core 3 includes a core body 31 for cooperating with the sealing element. Both ends of the core body 31 are provided with guide posts 32. The core body 31 and the exhaust hole, and the guide posts 32 and the sealing element are fitted with clearance. The clearance between the valve core and the opposite sidewalls of the exhaust hole is reasonably given to meet the exhaust requirements and the requirements of relative movement.

[0024] In this embodiment, the sealing elements include an upper sealing element 6 and a lower sealing element 7. Correspondingly, the sidewall of the vent hole is provided with grooves for installing the upper sealing element 6 and the lower sealing element 7, and the upper and lower sealing elements are respectively installed in the grooves at corresponding positions. Both the upper sealing element 6 and the lower sealing element 7 can be selected as sealing rings or sealing gaskets. Specifically, in this embodiment, both the upper and lower sealing elements are sealing rings, and the guide post passes through the inner hole of the sealing ring, allowing the core to contact the sealing ring to achieve a seal.

[0025] As a further optional implementation, conventional breathable material is added to the gap between the valve core and the vent hole, so that during the valve core operation, gas can pass through the breathable material through the gap between the valve core and the vent hole, while liquid cannot pass through the gap, thus ensuring that liquid does not leak during the venting process.

[0026] Example 3: An adjustable exhaust valve, based on Example 2, wherein the adjusting component 4 includes a spring 41. One end of the spring 41 is connected to the guide post 32, and the other end of the spring 41 is engaged with an adjusting cap 42, which is threadedly connected to the housing 1. In this example, one end of the spring is sleeved on the outside of the guide post. During installation, the spring is in a pre-compressed state. Under the elastic action of the spring, the valve core 31 is pushed to move and fit against the lower seal 7 on the inlet side of the exhaust hole to achieve a seal. When it is necessary to adjust the air pressure threshold required to open the seal between the core 31 and the lower seal 7, the adjusting cap 42 is rotated. The adjusting cap 42 moves axially under the action of the threaded connection, thereby adjusting the initial compression of the spring 41, and thus adjusting the air pressure required to separate the valve core from the lower seal 7 on the inlet side, meeting the needs of different usage scenarios.

[0027] In addition, the adjusting cap 42 is provided with an air passage hole. In this embodiment, the air passage hole and the exhaust hole are coaxially arranged, which can realize the gas discharge during the exhaust process.

[0028] Example 4: An adjustable exhaust valve, based on Example 3, wherein the top of the floating component 5 is provided with a trigger post 51, which cooperates with the valve core 3. In this example, the floating component 5 and the outer shell 11 are fitted with a clearance to allow gas to pass through and to allow liquid to enter the shell and push the floating component to move or make the floating component float under buoyancy.

[0029] As an optional design, the trigger post is initially positioned with a small gap from the valve core's guide post. During the upward movement of the floating element, the trigger post at the top center abuts against the lower end of the valve core's guide post, thus pushing the valve core upward and separating it from the lower seal to release air. When the liquid level is too high, the floating element presses the valve core against the upper seal, achieving a seal and preventing leakage.

[0030] As an optional design, the trigger column is initially positioned with a large gap from the valve core guide column. When the pressure increases to a semi-steady state, the higher gas pressure pushes the valve core upward, venting the gas. Simultaneously, as the gas is released, the liquid level rises, causing the float to move upward and push the valve core into contact with the upper seal to achieve a seal and prevent leakage.

[0031] Specifically, in this embodiment, the floating component 5 can be selected as a float or a buoy. The float is a hollow structure, and the buoy is a lightweight solid structure, both of which can float on the surface of the liquid flowing into the pipeline.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable exhaust valve, characterized in that: Includes a housing (1), on which a connecting port (2) and an exhaust hole are provided, the inlet and outlet sides of the exhaust hole are provided with seals, and a valve core (3) is slidably provided on the exhaust hole between the two seals. The valve core (3) is connected to an adjustment assembly (4), and the adjustment assembly (4) enables the valve core (3) to cooperate with the seal on the inlet side. A floating part (5) is provided in the inner cavity of the housing (1), and the floating part (5) can trigger the valve core (3) to slide when it moves.

2. The adjustable exhaust valve according to claim 1, characterized in that: The valve core (3) includes a core body (31) for cooperating with the seal. Both ends of the core body (31) are provided with guide posts (32). There are gaps between the core body (31) and the exhaust hole, and between the guide posts (32) and the seal.

3. The adjustable exhaust valve according to claim 2, characterized in that: The sealing element includes an upper sealing element (6) and a lower sealing element (7), both of which are sealing rings or sealing gaskets.

4. The adjustable exhaust valve according to claim 3, characterized in that: The sidewall of the vent hole is provided with a groove for installing the upper seal (6) and the lower seal (7).

5. The adjustable exhaust valve according to any one of claims 2 to 4, characterized in that: The adjustment assembly (4) includes a spring (41), one end of which is connected to the guide post (32), and the other end of which is engaged with the adjustment cap (42). The adjustment cap (42) is threadedly connected to the housing (1).

6. The adjustable exhaust valve according to claim 5, characterized in that: The adjusting cap (42) is provided with an air vent.

7. The adjustable exhaust valve according to claim 1 or 6, characterized in that: The housing (1) includes an outer shell (11), which is threadedly connected to the upper cover (12). The connecting port (2) and the vent are respectively provided on the outer shell (11) and the upper cover (12).

8. The adjustable exhaust valve according to claim 7, characterized in that: A sealing ring is provided between the outer shell (11) and the upper cover (12), and a sealing ring is provided on the connecting port (2).

9. The adjustable exhaust valve according to claim 1 or 8, characterized in that: The top of the floating component (5) is provided with a trigger post (51), which cooperates with the valve core (3).

10. The adjustable exhaust valve according to claim 9, characterized in that: The floating component (5) is a pontoon or a float.

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