Flexible poppet vent valve and transport line

Abstract

This invention discloses a flexible valve core exhaust valve and a transport pipeline. The flexible valve core exhaust valve includes: a valve body with an internal valve cavity, an inlet pipe and an outlet pipe connected to the valve cavity, and a flexible valve core disposed within the valve cavity, with an outlet pipe extending through the valve cavity at one end. The flexible valve core can expand to fill the valve cavity and block the inlet and outlet pipes. This flexible valve core exhaust valve is simple and convenient to use. By installing a flexible valve core in the valve cavity that can expand or contract in real time according to the control pressure, the gas passage in the controlled pipeline is blocked or opened to control the flow rate and volume of the controlled gas. The elastic deformation of the flexible valve core adapts to dust accumulation, ensuring the control effect.

Description

Technical Field

[0001] This invention belongs to the field of transportation pipeline technology, and more specifically, relates to a flexible valve core air supply valve and a transportation pipeline. Background Technology

[0002] Traditional valve bodies typically use metal or ceramic valve cores, which control the opening and closing of pipeline systems through rotation and lifting. Due to the materials, manufacturing, and assembly of the valve bodies, common problems include valve core failure due to powder accumulation, wear and leakage during opening and closing, and cracking caused by environmental temperature and humidity. Furthermore, when a valve in the pipeline malfunctions, temporary emergency repairs or timely disassembly usually require the removal of some connected pipelines, which can easily lead to disassembly difficulties, inconvenience, and relatively high maintenance costs. Especially for equipment transporting solid powders, if connected to the tank's gas line, powder can easily seep in, making cleaning difficult and causing it to accumulate at the valve core, resulting in incomplete valve closure. A dedicated dust collection valve is generally required before the control valve in the pipeline. Secondly, moisture in the air can easily enter the pipeline system and even the valve body, which is the most direct cause of accelerated corrosion and leakage in the pipeline and valve body. Therefore, exploring and improving valve core control methods has a very positive effect on promoting the selection of pipeline control methods and the development of equipment. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a flexible valve core exhaust valve, which solves the problems of valve core failure due to powder media accumulation, wear and leakage during valve opening and closing, and environmental temperature and humidity.

[0004] To achieve the above objectives, the present invention provides a flexible valve core exhaust valve, comprising:

[0005] The valve body has a valve chamber inside.

[0006] The air inlet pipe and the air outlet pipe are respectively connected to the valve chamber;

[0007] A flexible valve core is disposed inside the valve cavity, and one end of it is provided with an air pipe that passes through the valve cavity and protrudes outside;

[0008] The flexible valve core can expand to fill the valve cavity and block the air inlet pipe and the air outlet pipe.

[0009] Optionally, the valve cavity is provided with a drain hole that communicates with the outside. When the flexible valve core is inflated, it can expand and block the drain hole. When the flexible valve core is depressurized, the air inlet pipe can blow the flexible valve core closer to block the air outlet pipe and make the valve cavity communicate with the outside through the drain cavity.

[0010] Optionally, the air inlet pipe and the air outlet pipe are respectively disposed on both sides of the valve chamber.

[0011] Optionally, the valve body includes:

[0012] The valve seat is provided with the valve cavity and the drain hole;

[0013] A valve cover is used to close the valve cavity, and a sealing gasket is provided between the valve cover and the valve seat.

[0014] Optionally, the air pipe is provided with external threads, the bottom end of the valve seat is provided with a threaded hole, the air pipe thread passes through the threaded hole and is exposed, and the exposed end is provided with a lock nut.

[0015] Optionally, the flexible valve core is spherical, the valve seat is provided with a first hemispherical portion that cooperates with the flexible valve core, the upper end of the first hemispherical portion is provided with a insertion groove, the valve cover is provided with an insertion portion that cooperates with the insertion groove, and the insertion portion is provided with a second hemispherical portion that cooperates with the flexible valve core.

[0016] Optionally, multiple drain holes are provided, and the multiple drain holes are circumferentially distributed outside the threaded hole and communicate with the first hemisphere.

[0017] Optionally, the valve body and the valve cover are detachably connected by a plurality of bolt assemblies.

[0018] Optionally, the flexible valve core includes a hollow elastic rubber ball.

[0019] The present invention also provides a transport pipeline, comprising:

[0020] The aforementioned flexible valve core exhaust valve.

[0021] This invention provides a flexible valve core air supply valve, which has the following advantages:

[0022] 1. The flexible valve core air supply valve is simple and convenient to use. By installing a flexible valve core in the valve cavity that can expand or contract in real time with the control pressure, the gas passage in the controlled pipeline is blocked or opened to realize the on / off of the controlled gas and the flow rate. The elastic deformation of the flexible valve core adapts to dust accumulation, ensuring the control effect.

[0023] 2. The flexible valve core's air supply valve can also achieve self-cleaning of the valve body by matching the air inlet pressure and control pressure through the drain hole. Moreover, when replacing, only the valve core needs to be replaced, without disassembling the entire valve.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0025] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0026] Figure 1 A schematic diagram of a flexible valve core exhaust valve according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic diagram of the valve cover and valve body of a flexible valve core exhaust valve according to an embodiment of the present invention is shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Valve cover; 2. Valve seat; 3. Inlet pipe; 4. Outlet pipe; 5. Flexible valve core; 6. Air pipe; 7. Drain hole; 8. Locking nut; 9. Sealing gasket. Detailed Implementation

[0030] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0031] like Figure 1-2 As shown, a flexible valve core air supply valve includes:

[0032] The valve body has a valve chamber inside.

[0033] The air inlet pipe 3 and the air outlet pipe 4 are respectively connected to the valve chamber;

[0034] The flexible valve core 5 is installed inside the valve cavity, and one end of it is provided with an air pipe 6 that passes through the valve cavity and protrudes outside the valve cavity;

[0035] The flexible valve core 5 can expand to fill the valve cavity and block the air inlet pipe 3 and the air outlet pipe 4.

[0036] Specifically, by inflating or deflating the flexible valve core 5, the internal volume of the valve cavity is changed, thereby altering the size and flow path of the flow channel between the inlet pipe 3 and the outlet pipe 4, thus controlling the flow rate. The flexible valve core 5 adapts to dust and impurities through elastic deformation, ensuring effective operation even when some dust accumulates, without being blocked or jammed. At the same time, the flexible valve core 5 can deform and vibrate to prevent dust accumulation and adhesion, and also reduce the risk of corrosion.

[0037] Furthermore, the flexible valve cavity has a large deformation buffer capacity, which can adapt to slight deformation or thermal expansion and contraction, fully ensuring the blocking effect in the closed state and avoiding the gaps caused by the deformation of the valve core and valve body at different temperatures in the prior art.

[0038] In this embodiment, the valve cavity is provided with a drain hole 7 that connects to the outside. When the flexible valve core 5 is inflated, it can expand and block the drain hole 7. When the flexible valve core 5 is depressurized, the air inlet pipe 3 can blow the flexible valve core 5 closer to block the air outlet pipe 4, and make the valve cavity connect to the outside through the drain cavity.

[0039] Specifically, the valve cavity can be cleaned periodically through the drain hole 7. During daily cleaning, the flexible valve core 5 is inflated and expands to block the drain hole 7. During cleaning, the flexible valve core 5 contracts, connecting the drain hole 7 to the outside of the valve cavity. At the same time, air enters through the air inlet pipe 3 and blows the flexible valve core 5 towards the air outlet pipe 4, causing the flexible valve core 5 to block the air outlet pipe 4. This allows the air inlet to carry the dust accumulated in the valve cavity out through the drain hole 7, achieving a cleaning effect.

[0040] In this embodiment, the air inlet pipe 3 and the air outlet pipe 4 are respectively located on both sides of the valve chamber.

[0041] Specifically, the air inlet pipe 3 and the air outlet pipe 4 are symmetrically arranged on both sides of the valve cavity, which makes it convenient for the air inlet pipe 3 to blow the flexible valve core 5 in the contracted (collapsed) state to approach and block the air outlet pipe 4.

[0042] In this embodiment, the valve body includes:

[0043] Valve seat 2 is provided with a valve cavity and a drain hole 7;

[0044] Valve cover 1 is used to seal the valve cavity, and a sealing gasket 9 is provided between valve cover 1 and valve seat 2.

[0045] Specifically, the valve seat 2 and valve cover 1 are detachable for easy maintenance and replacement of the flexible valve core 5, and the sealing gasket 9 ensures the sealing between the valve seat 2 and valve cover 1.

[0046] In this embodiment, the air pipe 6 is provided with external threads, the bottom end of the valve seat 2 is provided with a threaded hole, the threads of the air pipe 6 pass through the threaded hole and are exposed, and a locking nut 8 is provided at the exposed end.

[0047] Specifically, the flexible valve core 5 is charged and depressurized through the air pipe 6, and the locking nut 8 seals the gap between the air pipe 6 and the valve seat 2 to prevent air leakage from the valve cavity. At the same time, the flexible valve core 5 can be replaced separately when replacing the valve, without replacing the entire valve.

[0048] In this embodiment, the flexible valve core 5 is spherical, the valve seat 2 is provided with a first hemispherical part that cooperates with the flexible valve core 5, the upper end of the first hemispherical part is provided with a plug groove, the valve cover 1 is provided with a plug part that cooperates with the plug groove, and a second hemispherical part that cooperates with the flexible valve core 5 is provided inside the plug part.

[0049] Specifically, the first and second hemispheres form a spherical valve cavity that adapts to the expansion and becomes a flexible spherical valve cavity, ensuring the blocking effect in the blocking state.

[0050] In this embodiment, multiple drain holes 7 are provided, and the multiple drain holes 7 are circumferentially distributed on the outside of the threaded hole and communicate with the first hemisphere.

[0051] In this embodiment, the valve body and valve cover 1 are detachably connected by a plurality of bolt assemblies.

[0052] In this embodiment, the flexible valve core 5 includes a hollow elastic rubber ball.

[0053] The present invention also provides a transport pipeline, comprising:

[0054] The aforementioned flexible valve core 5 is a supplementary exhaust valve.

[0055] In this embodiment, when the flexible valve core 5 is used as a make-up and exhaust valve, taking the use of a swing door of a railway freight car as an example, after being connected to the pipeline system, different levels of pressure control gas are introduced according to different working conditions. When the pressure of the introduced control gas can overcome the material contraction force of the flexible valve core 5 under atmospheric pressure, the valve core gradually expands and gradually reaches equilibrium with the input gas pressure of the controlled gas inlet pipe. At this stage, because the flow space of the controlled gas is occupied to a certain extent, the pressure locally increases, and it has a significant control effect on the gas velocity and flow rate, thereby meeting the actual specific working conditions. When the introduced control pressure continues to increase, the flexible valve core 5 continues to expand until it completely fills the valve cavity. At this time, the controlled gas path is in a closed state.

[0056] It should be noted that the pressure of the control gas must be greater than the pressure of the controlled gas at the valve core during operation; otherwise, the flexible valve core 5 may fail to expand properly, or even contract, or the unexpanded valve core may shift within the cavity and approach or even the outlet pipe 4. In this case, the drain hole 7 connects the valve cavity to the atmosphere, and the discharge process automatically carries away the dust and water accumulated in the cavity, thereby achieving automatic cleaning.

[0057] A flexible valve core 5, which expands or contracts in real time according to the control pressure, is installed in the spherical valve cavity to block or open the gas passage in the controlled pipeline system, thereby controlling the on / off state and flow rate of the controlled gas. Furthermore, by adjusting the inlet pressure and control pressure, the valve body can also achieve self-cleaning.

[0058] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A flexible valve core exhaust valve, characterized in that, include: The valve body has a valve chamber inside. The air inlet pipe and the air outlet pipe are respectively connected to the valve cavity; A flexible valve core is disposed inside the valve cavity, and one end of it is provided with an air pipe that passes through the valve cavity and protrudes outside; The flexible valve core can expand to fill the valve cavity and block the air inlet pipe and the air outlet pipe; The valve cavity is provided with a drain hole that connects to the outside. When the flexible valve core is inflated, it can expand and block the drain hole. When the flexible valve core is depressurized, the air inlet pipe can blow the flexible valve core closer to block the air outlet pipe and make the valve cavity connect to the outside through the drain hole. The air inlet pipe and the air outlet pipe are respectively located on both sides of the valve chamber; The valve body includes: The valve seat is provided with the valve cavity and the drain hole; A valve cover is used to close the valve cavity, and a sealing gasket is provided between the valve cover and the valve seat; The air pipe is provided with external threads, the bottom end of the valve seat is provided with a threaded hole, the air pipe thread passes through the threaded hole and is exposed, and a lock nut is provided at the exposed end. The flexible valve core is spherical, the valve seat is provided with a first hemispherical part that cooperates with the flexible valve core, the upper end of the first hemispherical part is provided with a insertion groove, the valve cover is provided with an insertion part that cooperates with the insertion groove, and the insertion part is provided with a second hemispherical part that cooperates with the flexible valve core. The drain hole is provided in multiple ways, and the multiple drain holes are circumferentially distributed on the outside of the threaded hole and communicate with the first hemisphere.

2. The air supply valve with a flexible valve core according to claim 1, characterized in that, The valve body and the valve cover are detachably connected by a plurality of bolt assemblies.

3. The air supply valve with a flexible valve core according to claim 1, characterized in that, The flexible valve core includes a hollow elastic rubber ball.

4. A transport pipeline, characterized in that, include: The air supply valve with a flexible valve core according to any one of claims 1-3.

Images