Automatic pipe deflation valve

Abstract

The utility model provides a kind of automatic pipeline deflation valve, it is related to deflation valve technical field, including valve body, the valve body includes outer shell, outer shell is connected with outer discharge pipe, the float ball of the inner diameter less than outer shell is equipped in outer shell, the inside upper end between outer discharge pipe and outer shell is equipped with exhaust member, under the natural state of float ball, the exhaust member is in open state, further include limiting piece, for the movable connection float ball and exhaust member, by the limiting piece limit float ball skewing;Filter element, detachably set in the inside lower end of outer shell, for filtering and collecting impurities;The utility model is limited by setting limiting piece, the movement track of its is constrained during float ball lifting, avoid float ball skewing, deviation due to fluid disturbance, ensure that float ball can always accurate push and pull movable rod, guarantee the alignment sealing property of sealing gasket and exhaust pipe, improve the stability of equipment long-term operation.

Description

Technical Field

[0001] This utility model relates to the field of venting valve technology, and in particular to an automatic venting valve for pipelines. Background Technology

[0002] In pipeline transportation systems for heating, water supply, and industrial low-pressure fluids, fluid flow, temperature changes, or system maintenance can easily lead to gas accumulation inside the pipelines. If these trapped gases cannot be released in time, they can cause airlocks, which not only reduce the effective flow cross-section of the pipeline, increase fluid resistance, and reduce transportation efficiency, but may also cause local pressure fluctuations in the pipeline, affecting the operation of downstream equipment such as water pumps and heat exchangers. Furthermore, the compression and expansion of the gas can exacerbate pipeline corrosion, generate noise, and in severe cases, lead to leaks at pipeline joints, threatening the stability and safety of the system. Therefore, venting valves are a key component for ensuring the reliable operation of pipeline systems.

[0003] Existing pipeline venting valves still have many shortcomings during long-term use: First, some venting valves rely on floats to achieve automatic venting and sealing, but the floats are prone to tilting or shifting under the influence of pipeline fluid disturbances (such as pump start-up and shutdown, flow rate changes), causing the floats to fail to accurately push the sealing components, resulting in poor sealing of the venting port, water leakage, or poor venting; Second, pipeline fluids often contain impurities such as mud, sand, and rust, which can easily enter the venting mechanism of the venting valve, causing moving parts to jam and the venting valve to lose its automatic venting or sealing function. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model proposes an automatic venting valve for pipelines.

[0005] The technical solution of this utility model is implemented as follows: An automatic venting valve for pipelines includes a valve body, the valve body including an outer shell, an external venting pipe connected to the outer shell, a float with a diameter smaller than the inner diameter of the outer shell inside the outer shell, and an venting device between the inner upper end of the external venting pipe and the inner part of the outer shell. When the float is in its natural state, the venting device is in the open state. The valve also includes:

[0006] A limiting component is used to movably connect the float and the venting component, and the limiting component is used to prevent the float from tilting.

[0007] A filter element is detachably disposed inside the lower end of the housing for filtering and collecting impurities.

[0008] Preferably, the exhaust component includes:

[0009] A movable rod and an exhaust pipe, wherein a sealing gasket is provided at the end of the movable rod facing the exhaust pipe;

[0010] The spring is connected between the moving rod and the exhaust pipe via a convex ring.

[0011] Preferably, the upper surface of the float has a top groove, and the end of the top groove away from the exhaust pipe is lower.

[0012] Preferably, the limiting member includes:

[0013] A limiting groove is formed on the movable rod;

[0014] The limiting rod is connected at its bottom end to the bottom of the top groove and passes through the limiting groove. A stop block is fixed at the top end of the limiting rod.

[0015] Preferably, the outer shell is composed of a detachably connected lower shell and an upper shell.

[0016] Preferably, the filter element includes a frame installed at the bottom inside the lower shell, a filter screen is installed on the upper surface of the frame, and multiple inlets are opened at the bottom of the frame. An inwardly opening movable baffle is installed at the bottom inside the frame and at the inlet.

[0017] Preferably, the external exhaust pipe has multiple exhaust holes arranged in a ring array, and the end of the external exhaust pipe is rotatably fitted with a cap, the cap having a through opening.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model constrains the movement trajectory of the float during its raising and lowering process by setting a limiting component, which prevents the float from tilting or deviating due to fluid disturbance. Even if there are fluctuations in the fluid in the pipeline, the limiting rod always moves in a directional manner within the limiting groove, ensuring that the float can always accurately push the movable rod, ensuring the alignment and sealing of the sealing gasket and the exhaust pipe, and improving the long-term stability of the equipment.

[0020] 2. This utility model has a detachable filter element installed at the lower end of the inner shell. When fluid or gas enters the valve body, it must first pass through the filter screen of the filter element. The filter screen can effectively intercept impurities in the fluid and prevent impurities from entering the exhaust part of the upper part of the valve body. This avoids malfunctions such as the moving rod not moving flexibly and the sealing gasket not sealing properly due to impurities blocking the valve body, and ensures the long-term reliability of the exhaust and sealing functions. Secondly, the frame design of the filter element is combined with an inwardly opening movable baffle, which can not only intercept impurities through the filter screen, but also achieve centralized collection of impurities through the one-way conduction characteristic of the movable baffle.

[0021] 3. By designing multiple exhaust holes in a ring array on the external exhaust pipe and matching them with rotatable end caps, the exhaust direction can be manually adjusted according to actual site requirements. The exhaust direction can be adjusted to a safe direction to adapt to the safety requirements of different installation scenarios. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is an appearance drawing of the present utility model;

[0025] Figure 3 This is a structural schematic diagram of the float, venting component, and limiting component of this utility model;

[0026] Figure 4 This is a schematic diagram of the outer shell and the external exhaust pipe of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the filter element of this utility model;

[0028] Figure 6 This utility model Figure 5 A structural diagram from another angle.

[0029] In the diagram: 1. Valve body; 2. Outer shell; 21. Lower shell; 22. Upper shell; 3. External exhaust pipe; 31. Exhaust port; 4. End cap; 5. Filter element; 51. Frame; 52. Inlet; 53. Movable baffle; 6. Float; 61. Top groove; 7. Exhaust element; 71. Movable rod; 72. Exhaust pipe; 73. Sealing gasket; 74. Spring; 8. Limiting element; 81. Limiting groove; 82. Limiting rod; 83. Stop block. Detailed Implementation

[0030] 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.

[0031] Example 1

[0032] like Figures 1-6As shown, an automatic venting valve for pipelines includes a valve body 1, which includes an outer shell 2 and a threaded connection. The threaded connection is fixed to the bottom end of the outer shell 2, and the venting valve is connected to the pipeline through the threaded connection. The outer shell 2 is composed of a detachably connected lower shell 21 and an upper shell 22. The lower shell 21 and the upper shell 22 are preferably connected by a thread. An external discharge pipe 3 is connected to the outer shell 2. A float 6 with a diameter smaller than the inner diameter of the outer shell 2 is provided inside the outer shell 2. An exhaust device 7 is provided between the external discharge pipe 3 and the upper end of the inner part of the outer shell 2. In the natural state of the float 6, that is, in the state of not being squeezed by fluid, the exhaust device 7 is in the open state. The valve also includes a limiting member 8, which is used to movably connect the float 6 and the exhaust device 7, and the limiting member 8 restricts the float 6 from tilting.

[0033] Among them, see Figure 1 and Figure 4 As shown, the external exhaust pipe 3 has multiple exhaust holes 31 arranged in a ring array. The multiple exhaust holes 31 face different directions, and the end of the external exhaust pipe 3 is rotatably mounted with a cap 4. The cap 4 has a through-hole. If there are workers on site, or if the exhaust direction is facing other sensitive equipment, the cap 4 can be manually rotated. During the rotation, the through-hole on the cap 4 will rotate accordingly and gradually align with the exhaust holes 31 facing different directions. When the through-hole is completely aligned with the target exhaust hole 31, the gas can only be discharged through the aligned exhaust hole 31. Other misaligned exhaust holes 31 are closed by the cap 4. By selecting exhaust holes 31 in different positions, the exhaust direction can be adjusted to a safe area, such as towards a more open area, a dedicated collection channel, or a direction away from personnel and equipment.

[0034] Among them, see Figure 1 and Figure 3 As shown, the exhaust component 7 includes a movable rod 71 and an exhaust pipe 72. A sealing gasket 73 is provided at the end of the movable rod 71 facing the exhaust pipe 72. A spring 74 is connected between the movable rod 71 and the near section of the exhaust pipe 72 by a convex ring. In the natural state, the end of the movable rod 71 away from the exhaust pipe 72 hangs down, so that the sealing gasket 73 does not adhere to the end of the exhaust pipe 72. At this time, gas can enter from the end of the exhaust pipe 72 and then be discharged. After the gas is discharged, when the fluid rises to contact the float 6, the buoyancy of the fluid will exert an upward force on the float 6, pushing the float 6 to move upward, causing the hanging end of the movable rod 71 to move upward, thereby causing the sealing gasket 73 to adhere to the end of the exhaust pipe 72 for sealing, thus achieving automatic sealing.

[0035] See Figure 1 and Figure 3As shown, the upper surface of the float 6 has a top groove 61. The end of the top groove 61 away from the exhaust pipe 72 is lower. The limiting member 8 includes a limiting groove 81 and a limiting rod 82. The limiting groove 81 is opened on the movable rod 71. The bottom end of the limiting rod 82 is connected to the bottom of the top groove 61 and the limiting rod 82 passes through the limiting groove 81. The diameter of the limiting rod 82 is smaller than the inner diameter of the limiting groove 81. A stop block 83 is fixed at the top of the limiting rod 82. When the stop block 83 is circular, its diameter is larger than the inner diameter of the limiting groove 81. After the fluid squeezes the float 6 from the bottom, the float 6 moves upward and squeezes the movable rod 71, so that the air inlet end of the exhaust pipe 72 is blocked. During the rising and falling of the float 6, the float 6 can be limited by moving along the limiting groove 81 on the movable rod 71 through the limiting rod 82, so as to avoid large displacement of the float 6 and ensure the automatic blocking and opening function of the air inlet end of the exhaust pipe 72.

[0036] Example 2

[0037] See Figure 1 as well as Figures 5-6 As shown, the automatic venting valve for the pipeline also includes a filter element 5, which is detachably disposed at the lower end of the inner casing 2 for filtering and collecting impurities.

[0038] The filter element 5 includes a frame 51 installed at the bottom inside the lower shell 21, which can be fixed with bolts. A filter screen is installed on the upper surface of the frame 51, and multiple inlets 52 are opened at the bottom of the frame 51. A movable baffle 53 that can be opened inward is installed at the bottom inside the frame 51 and at the inlet 52. Several leakage holes (not shown) are opened on the movable baffle 53. The movable baffle 53 is installed at the bottom back of the frame 51 by hinge. In order to prevent the movable baffle 53 from overturning inward, a torsion spring (not shown) can be provided on the hinge shaft.

[0039] As described above, in actual use, when fluid or gas enters the outer shell 2 from the threaded connection, it squeezes the movable baffle 53, causing the inlet 52 to open. Impurities in the fluid or gas are blocked by the filter screen, which can prevent them from entering the upper shell 22 and causing blockage of the exhaust channel. The frame 51 can collect the impurities that enter. After a period of time, the staff can open the outer shell 2 and remove the filter element 5 to remove the impurities collected inside the frame 51.

[0040] It should be noted that the impurities intercepted by the filter will be deposited at the bottom of the frame 51 under the action of gravity or with some fluid through the leakage hole on the movable baffle 53. Since the movable baffle 53 will automatically reset after the fluid pressure disappears and tightly close the inlet 52, the deposited impurities will not flow back into the pipe from the inlet 52, thereby realizing the centralized collection of impurities in the frame 51.

[0041] 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 automatic venting valve for pipelines, comprising a valve body (1), the valve body (1) including an outer shell (2), the outer shell (2) being connected to an external venting pipe (3), characterized in that, The outer shell (2) is provided with a float (6) with a diameter smaller than the inner diameter of the outer shell (2). An exhaust device (7) is provided between the outer exhaust pipe (3) and the upper end of the inner part of the outer shell (2). When the float (6) is in its natural state, the exhaust device (7) is in the open state. The system also includes: A limiting member (8) is used to movably connect the float (6) and the vent (7), and the limiting member (8) restricts the float (6) from tilting; The filter element (5) is detachably disposed at the lower end of the inner part of the outer casing (2) for filtering and collecting impurities.

2. The automatic venting valve for pipelines according to claim 1, characterized in that: The exhaust component (7) includes: A movable rod (71) and an exhaust pipe (72), wherein a sealing gasket (73) is provided at one end of the movable rod (71) facing the exhaust pipe (72); A spring (74) is connected between the movable rod (71) and the exhaust pipe (72) via a convex ring.

3. The automatic venting valve for pipelines according to claim 2, characterized in that: The upper end of the float (6) is provided with a top groove (61), and the end of the top groove (61) away from the exhaust pipe (72) is lower.

4. The automatic venting valve for pipelines according to claim 2, characterized in that: The limiting member (8) includes: A limiting groove (81) is formed on the movable rod (71); The limiting rod (82) is connected at its bottom end to the bottom of the top groove (61) and the limiting rod (82) passes through the limiting groove (81). A stop block (83) is fixed at the top end of the limiting rod (82).

5. The automatic venting valve for pipelines according to claim 1, characterized in that: The outer shell (2) is composed of a detachably connected lower shell (21) and an upper shell (22).

6. The automatic venting valve for pipelines according to claim 5, characterized in that: The filter element (5) includes a frame (51) installed at the bottom inside the lower shell (21). A filter screen is installed on the upper surface of the frame (51), and multiple inlets (52) are opened at the bottom of the frame (51). An inwardly opening movable baffle (53) is installed at the bottom inside the frame (51) and at the inlet (52).

7. The automatic venting valve for pipelines according to claim 1, characterized in that: The external exhaust pipe (3) has multiple exhaust holes (31) arranged in a ring array, and the end of the external exhaust pipe (3) is rotatably equipped with a cap (4), and the cap (4) has a through opening.

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