High-speed baffle valve with long service life and alternating load resistance

Abstract

The invention relates to the technical field of valves, in particular to a long-service-life anti-alternating-load high-speed baffle valve which comprises a valve body, a valve element assembly, a driving module and a control module, the components are arranged in the valve body, and the control module controls the valve element assembly to move through the driving module; a telescopic pipeline of the valve element assembly is of a gradient wall thickness structure in the telescopic direction, the ratio of the wall thickness to the inner diameter of the telescopic pipeline is 0.001-0.1, the butt joint position of telescopic joints is in arc or sharp corner transition, the thickness change is in the form of equal-ratio gradual change and the like, and the baffle valve is opened and closed according to instructions of a control module. Impact loads can be dispersed, the anti-alternating impact service life is prolonged, the device adapts to various working conditions, the service life of a welding seam can be prolonged through arc transition, accurate control is achieved through multi-module cooperation, and the high-speed and long-service-life using requirements are met.

Description

Technical Field

[0001] This invention relates to the field of valve technology, specifically a long-life, high-speed baffle valve resistant to alternating loads. Background Technology

[0002] Baffle valves are widely used in the field of vacuum technology due to their good opening, closing and sealing effects. They are used to cut off or connect the gas path to achieve the system's vacuum control requirements.

[0003] Existing baffle valves are low-speed and cannot withstand long-term alternating fatigue loads. With the increasing demands for technological development in various industries and the growing requirements for equipment automation and high efficiency, existing baffle valve products can no longer meet the actual needs. Therefore, in view of the above situation, there is an urgent need to develop a long-life, high-speed baffle valve resistant to alternating loads to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide a long-life, high-speed baffle valve resistant to alternating loads, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A long-life, high-speed baffle valve resistant to alternating loads includes a valve body, a valve core assembly, a drive module, and a control module;

[0007] The valve body is internally equipped with the valve core assembly, drive module and control module;

[0008] The control module is connected to the drive module to send control commands, and the drive module is connected to the valve core assembly to drive the valve core assembly to move, thereby realizing the opening and closing of the baffle valve.

[0009] The valve core assembly includes a telescopic conduit with a gradient wall thickness structure along its telescopic direction.

[0010] As a further embodiment of the present invention: the valve body includes a housing and a stop block;

[0011] The outer shell constitutes the external protective structure of the valve body and provides an installation base for the valve core assembly, drive module and control module;

[0012] The stop block is fixedly disposed inside the valve body and is arranged corresponding to the movement path of the valve core assembly, and is used to limit the movement of the valve core assembly.

[0013] As a further aspect of the present invention: the valve core assembly further includes a valve core and a spring;

[0014] The spring is sleeved on the outer periphery of the valve core; the telescopic tube wraps around the spring, and one end of the telescopic tube is assembled and connected to the valve core;

[0015] The spring is used to release elastic potential energy during the closing process of the baffle valve, driving the valve core to move at high speed.

[0016] As a further embodiment of the present invention: the valve core assembly further includes a first seal and a second seal;

[0017] The first seal is tightly fitted to the end face of the valve core facing the valve port; the second seal fills the gap between the valve core and the telescopic pipe to prevent impurities from entering or internal media from leaking.

[0018] As a further aspect of the present invention: in the gradient wall thickness structure of the telescopic pipe, the ratio of the wall thickness of the telescopic pipe to the inner diameter of the telescopic pipe is 0.001 to 0.1.

[0019] As a further aspect of the present invention: the gradient wall thickness structure of the telescopic pipe is one of the following two types:

[0020] The first type: the expansion joint of the expansion pipe has a structure that is thick at both ends and thins towards the middle along the expansion direction;

[0021] The second type: The expansion joint of the expansion pipe has a structure that is thick at one end and thins towards the other end along the expansion direction.

[0022] As a further aspect of the present invention: the joint of the expansion joint of the expansion pipe is a rounded transition or a sharp corner transition.

[0023] As a further aspect of the present invention, the wall thickness of the telescopic pipe varies in one or more combinations of geometric progression, arithmetic progression, linear function variation, or quadratic function variation.

[0024] A method for controlling the opening and closing of a long-life, alternating-load-resistant high-speed baffle valve, based on the aforementioned long-life, alternating-load-resistant high-speed baffle valve, the method comprising the following steps:

[0025] S1. Valve opening: The control module sends a valve opening command to the drive module. After receiving the command, the drive module starts and outputs power to drive the valve core assembly to move backward until the outer peripheral boss of the valve core of the valve core assembly contacts the stop block in the valve body. The valve core stops moving and the valve opening is fully open.

[0026] S2, Valve port closed: The control module sends a valve port closing command to the drive module. After receiving the command, the drive module closes and stops outputting power. The spring of the valve core assembly releases its elastic potential energy, driving the valve core to move forward until the valve core contacts the outer shell of the valve body. The sealing layer on the end face of the valve core is compressed, achieving valve port sealing and complete valve port closure.

[0027] As a further aspect of the present invention: in step S1, when the valve core moves backward, it drives the telescopic pipe to compress synchronously, and the spring sleeved on the outer periphery of the valve core is also compressed synchronously.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. The telescopic pipe of this invention has a wall thickness gradient structure, which can effectively disperse and release the load under high frequency and strong impact, thus effectively improving the service life of the baffle valve. The wall thickness of the telescopic pipe can be selected and adjusted according to the pipe diameter requirements, adapting to various working conditions, improving service life while being economical and efficient.

[0030] 2. When the expansion joint connection of the telescopic pipe of the present invention is a circular arc transition structure, it can effectively release stress under impact alternating load, and greatly extend the working life of the weld.

[0031] 3. Through the synergistic effect of multiple modules, including the valve body, valve core assembly, drive module, and control module, this invention can precisely control the opening and closing parameters of the baffle valve as needed, meeting the requirements of equipment automation and high efficiency. At the same time, the sealing structure in the valve core assembly can ensure the sealing performance of the baffle valve, and the spring structure can help achieve high-speed closing of the baffle valve, further improving the working performance and adaptability of the baffle valve. Attached Figure Description

[0032] Figure 1 This is a front cross-sectional view of the long-life, alternating load resistant high-speed baffle valve of the present invention.

[0033] Figure 2 This is a partially enlarged view of the telescopic pipe structure of the long-life, alternating load resistant high-speed baffle valve in this invention.

[0034] Figure 3 This is a schematic diagram of the axial side of the long-life, alternating load resistant high-speed baffle valve in this invention.

[0035] In the diagram: 1-valve body, 11-outer shell, 12-stop block, 2-valve core assembly, 21-valve core, 22-seal one, 23-seal two, 24-spring, 25-telescopic pipe, 3-drive module, 4-control module. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0038] Please see Figures 1-3 The present invention provides a long-life high-speed baffle valve resistant to alternating loads, comprising a valve body 1, a valve core assembly 2, a drive module 3, and a control module 4;

[0039] The valve body 1 is equipped with a valve core assembly 2, a drive module 3 and a control module 4. The control module 4 and the drive module 3 form a control association, and the drive module 3 and the valve core assembly 2 form a drive association. That is, the control module 4 controls the movement of the valve core assembly 2 through the drive module 3, thereby realizing the opening and closing of the baffle valve port.

[0040] In one embodiment of the present invention, please refer to Figures 1-3 The valve body 1 includes a housing 11 and a stop 12. The housing 11 and the stop 12 together constitute the main structure of the valve body 1. The stop 12 is disposed inside the valve body 1 and is used to limit the movement of the valve core assembly 2.

[0041] During the opening process of the baffle valve, the valve core 21 in the valve core assembly 2 moves backward. When the boss of the valve core 21 contacts the stop block 12, the stop block 12 blocks the valve core 21, causing the valve core 21 to stop moving. During the closing process of the baffle valve, the valve core 21 moves forward and eventually moves to the outer shell 11 of the valve body 1. The outer shell 11 limits the forward movement of the valve core 21 and, together with the seal 22, achieves sealing.

[0042] The outer casing 11 provides external protection for the entire baffle valve and serves as a base for the installation of internal components, ensuring the stable assembly of each internal component; the stop block 12 limits the valve core 21, preventing the valve core 21 from being damaged by excessive movement, thus ensuring the stable operation of the baffle valve and indirectly extending the equipment life.

[0043] In one embodiment of the present invention, please refer to Figures 1-3 The valve core assembly 2 is the core component that enables the baffle valve to resist alternation and have a long service life. It includes valve core 21, seal 1 22, seal 2 23, spring 24 and telescopic pipe 25.

[0044] Among them, valve core 21 is the core support component of valve core assembly 2, and spring 24 is provided on the outer periphery of valve core 21. Spring 24 is sleeved on the outside of valve core 21.

[0045] A telescopic tube 25 is provided on the outer periphery of the spring 24. The telescopic tube 25 wraps around the spring 24 and is assembled with the valve core 21.

[0046] A seal 22 is provided on the end face of the valve core 21 (the end facing the valve port), and the seal 22 is in close contact with the end face of the valve core 21;

[0047] A second seal 23 is provided at the connection between the valve core 21 and the telescopic pipe 25. The second seal 23 fills the gap between the two to ensure the sealing of the connection.

[0048] Spring 24 stores elastic potential energy during the opening process and accelerates the movement of valve core 21 during the closing process, which helps to achieve high-speed closing of the baffle valve, improves the response speed of the baffle valve, and meets the requirements of high-speed operation.

[0049] When closed, seal 22 achieves a seal at the valve port through compression, ensuring the sealing performance of the baffle valve and preventing gas leakage from affecting the vacuum control of the vacuum system; seal 23 forms a seal at the connection between valve core 21 and telescopic pipe 25, preventing impurities from entering the valve core assembly 2 or the internal lubricating medium from leaking, ensuring the stable movement of valve core assembly 2 and extending its service life.

[0050] The expansion joint 25 has a gradient thickness structure in the expansion direction. The specific parameters and form of this gradient structure are as follows:

[0051] Gradient structure types: There are two types. The first type is that the expansion joint of the telescopic pipe 25 has a structure that is "thick at both ends and thins towards the middle" along the expansion direction. The second type is that the expansion joint of the telescopic pipe 25 has a structure that is "thick at one end and thins towards the other end" along the expansion direction.

[0052] Wall thickness to inner diameter ratio: In the gradient structure of the telescopic pipe 25, the ratio of wall thickness to inner diameter of the telescopic pipe 25 is 0.001 to 0.1; preferably, when the inner diameter of the telescopic pipe is φ63mm, the wall thickness at both ends is 2mm, the wall thickness in the middle is 0.5mm, and the wall thickness from both ends to the middle changes at an equal arithmetic progression with a tolerance of 0.15mm.

[0053] The wall thickness gradient structure of the telescopic pipe 25 can effectively disperse and release the load under high frequency and strong impact, avoiding premature damage to the telescopic pipe 25 due to load concentration, thereby effectively improving the working life of the baffle valve against alternating impact; at the same time, the wall thickness of the telescopic pipe 25 can be selected and adjusted according to the pipe diameter requirements to adapt to various working conditions, improving service life while taking into account economy and efficiency.

[0054] Expansion joint joint structure: The expansion joint joint can be either a rounded transition or a sharp corner transition; when the expansion joint joint joint is a rounded transition, it can effectively release stress under impact alternating loads, greatly extending the service life of the weld (sharp corner transition structures do not have this specific stress release effect and only meet the basic connection requirements).

[0055] Thickness variation law: The thickness variation of the telescopic pipe 25 can be one or more combinations of the following: proportional variation, arithmetic variation, linear function, quadratic function. Preferably, the thickness variation is proportional, and the ratio of wall thickness to inner diameter of telescopic pipe 25 decreases by 0.001 from both ends to the middle.

[0056] Actions during the opening process: When the drive module 3 starts and drives the valve core assembly 2 to move backward quickly, the valve core 21, as the core, drives the telescopic pipe 25 to compress synchronously. At the same time, the spring 24 sleeved on the outer periphery of the valve core 21 is compressed until the valve core 21 boss contacts the stop block 12, the valve core 21 stops moving, and the compression state of the telescopic pipe 25 and the spring 24 remains stable.

[0057] Actions during the closing process: When the drive module 3 is closed, the spring 24, which is in a compressed state, releases its elastic potential energy and accelerates the valve core 21 to move forward. The valve core 21 drives the telescopic pipe 25 to extend synchronously until the valve core 21 moves to the outer shell 11 of the valve body 1. At this time, the seal 22 on the end face of the valve core 21 is compressed, thus achieving valve port sealing.

[0058] In one embodiment of the present invention, please refer to Figures 1-3 The drive module 3 is located inside the valve body 1. One end is connected to the control module 4 to receive the instructions from the control module 4, and the other end is connected to the valve core assembly 2 to provide power for the movement of the valve core assembly 2. The drive module 3 is preferably an electromagnetic drive structure, which controls the attraction force of the electromagnet by switching the current on and off, thereby driving the valve core assembly to move.

[0059] When the control module 4 sends a valve opening command, the drive module 3 starts and outputs power to drive the valve core assembly 2 to move backward quickly; when the control module 4 sends a valve closing command, the drive module 3 closes and stops outputting power. At this time, the valve core assembly 2 relies on the elastic potential energy of the spring 24 to complete the subsequent movement.

[0060] As a power source, the drive module 3 can provide a stable and efficient driving force for the valve core assembly 2, ensuring that the valve core assembly 2 responds quickly to control commands and realizes the high-speed opening of the baffle valve, meeting the needs of equipment automation and high efficiency.

[0061] In one embodiment of the present invention, please refer to Figures 1-3The control module 4 is located inside the valve body 1 and is only connected to the drive module 3. It is used to send start, stop and action commands to the drive module 3. The control module 4 is a solid-state relay or IGBT to control the drive module 3.

[0062] Based on actual usage requirements (such as the control requirements of the vacuum system for the opening and closing of the valve port), the control module 4 sends a "valve port open" or "valve port closed" command to the drive module 3. By controlling the start and stop of the drive module 3, the movement state of the valve core assembly 2 is indirectly controlled, thereby controlling the opening and closing of the valve port.

[0063] The control module 4 can accurately output control commands to achieve precise control of the drive module 3, thereby enabling precise regulation of the opening and closing parameters of the baffle valve (such as opening and closing timing), ensuring the coordinated operation of the baffle valve and the vacuum system, and improving the automation level of the entire system.

[0064] In one embodiment of the present invention, please refer to Figures 1-3 The overall working process (opening and closing) of the baffle valve is as follows:

[0065] (1) Valve opening procedure;

[0066] Control module 4 sends a valve opening command, and drive module 3 starts after receiving the command;

[0067] The drive module 3 outputs power to drive the valve core assembly 2 to move backward quickly. During this process, the valve core 21 drives the telescopic pipe 25 to compress, and at the same time, the spring 24 on the outer periphery of the valve core 21 is compressed.

[0068] When the valve core 21 moves to the point where its boss contacts the stop block 12 inside the valve body 1, the stop block 12 limits the valve core 21, and the valve core 21 stops moving. At this time, the valve port is fully open and the baffle valve is in the open state.

[0069] (2) Valve port closing procedure;

[0070] Control module 4 sends a valve closing command, and drive module 3 receives the command and closes, stopping power output;

[0071] The spring 24 in the valve core assembly 2, which is in a compressed state, releases its elastic potential energy and accelerates the valve core 21 to move forward.

[0072] The valve core 21 moves forward until it contacts the outer shell 11 of the valve body 1. The outer shell 11 limits the valve core 21. At this time, the seal 22 on the end face of the valve core 21 is compressed, achieving valve port sealing, and the baffle valve is in the closed state.

[0073] The present invention provides a long-life, high-speed baffle valve resistant to alternating loads, which has the following technical advantages:

[0074] Through the precise commands of the control module 4, the efficient power output of the drive module 3, and the acceleration effect of the spring 24, the baffle valve can achieve high-speed opening and closing, meeting the technical requirements of equipment automation and high efficiency, and solving the problem that the existing low-speed baffle valve cannot adapt to high-requirement scenarios.

[0075] The core relies on the wall thickness gradient structure of the telescopic pipe 25 in the valve core assembly 2 (to disperse impact loads), the arc transition of the telescopic joint (to release stress), and the sealing protection of seal 1 22 and seal 2 23, which effectively improve the ability of the baffle valve to resist alternating fatigue loads and significantly extend its service life.

[0076] The wall thickness of the expansion joint 25 can be adjusted according to the pipe diameter selection, adapting to various working conditions. There is no need to design the overall structure separately for different working conditions, which reduces design and manufacturing costs while ensuring performance, and has the advantages of being economical and efficient.

[0077] The control module 4 and the drive module 3 work together to achieve precise control of opening and closing parameters. The double sealing of seal 1 22 and seal 2 23 ensures the sealing of the valve port and the inside of the valve core assembly 2, ensuring that the baffle valve works stably in the vacuum system and meets the vacuum control requirements.

[0078] It should be noted that, in this invention, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0079] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A long-life, high-speed baffle valve resistant to alternating loads, characterized in that, It includes a valve body (1), a valve core assembly (2), a drive module (3), and a control module (4); The valve body (1) is internally provided with the valve core assembly (2), the drive module (3) and the control module (4); The control module (4) is connected to the drive module (3) to send control commands, and the drive module (3) is connected to the valve core assembly (2) to drive the valve core assembly (2) to move, thereby realizing the opening and closing of the baffle valve; The valve core assembly (2) includes a telescopic pipe (25) which has a gradient wall thickness structure along its telescopic direction.

2. The long-life, high-speed baffle valve resistant to alternating loads according to claim 1, characterized in that, The valve body (1) includes a housing (11) and a stop (12); The outer shell (11) constitutes the external protective structure of the valve body (1) and provides an installation base for the valve core assembly (2), drive module (3) and control module (4); The stop block (12) is fixedly disposed inside the valve body (1) and arranged corresponding to the movement path of the valve core assembly (2) to limit the movement of the valve core assembly (2).

3. The long-life, high-speed baffle valve resistant to alternating loads according to claim 1, characterized in that, The valve core assembly (2) also includes a valve core (21) and a spring (24); The spring (24) is sleeved on the outer periphery of the valve core (21); the telescopic pipe (25) wraps around the spring (24), and one end of the telescopic pipe (25) is assembled and connected to the valve core (21); The spring (24) is used to release elastic potential energy during the closing process of the baffle valve, driving the valve core (21) to move at high speed.

4. The long-life, alternating-load-resistant high-speed baffle valve according to claim 3, characterized in that, The valve core assembly (2) further includes a first seal (22) and a second seal (23); The first seal (22) is tightly fitted to the end face of the valve core (21) facing the valve port; the second seal (23) fills the gap between the valve core (21) and the telescopic pipe (25) to prevent impurities from entering or internal media from leaking.

5. The long-life, alternating-load-resistant high-speed baffle valve according to claim 1, characterized in that, In the gradient wall thickness structure of the telescopic pipe (25), the ratio of the wall thickness of the telescopic pipe (25) to the inner diameter of the telescopic pipe (25) is 0.001 to 0.

1.

6. The long-life, high-speed baffle valve resistant to alternating loads according to claim 5, characterized in that, The gradient wall thickness structure of the telescopic pipe (25) is one of the following two types: The first type: the expansion joint of the expansion pipe (25) has a structure that is thick at both ends and thins towards the middle along the expansion direction; The second type: the expansion joint of the expansion pipe (25) has a structure that is thick at one end and thins towards the other end along the expansion direction.

7. The long-life, alternating-load-resistant high-speed baffle valve according to claim 5, characterized in that, The expansion joint of the expansion pipe (25) has a rounded transition or a sharp corner transition.

8. The long-life, high-speed baffle valve resistant to alternating loads according to claim 5, characterized in that, The wall thickness of the telescopic pipe (25) varies in one or more combinations of the following: proportional variation, arithmetic variation, linear function variation, or quadratic function variation.

9. A method for controlling the opening and closing of a long-life, high-speed baffle valve resistant to alternating loads, characterized in that, Based on the long-life, alternating load-resistant, high-speed baffle valve according to any one of claims 1-8, the method includes the following steps: S1, Valve opening: The control module (4) sends a valve opening command to the drive module (3). After receiving the command, the drive module (3) starts and outputs power to drive the valve core assembly (2) to move backward until the outer peripheral boss of the valve core (21) of the valve core assembly (2) contacts the stop block (12) inside the valve body (1). The valve core (21) stops moving and the valve is fully opened. S2, Valve port closed: The control module (4) sends a valve port closing command to the drive module (3). After receiving the command, the drive module (3) closes and stops outputting power. The spring (24) of the valve core assembly (2) releases elastic potential energy, driving the valve core (21) to move forward until the valve core (21) contacts the outer shell (11) of the valve body (1). The sealing 1 (22) on the end face of the valve core (21) is compressed, realizing valve port sealing and the valve port is completely closed.

10. The opening and closing control method for a long-life, alternating-load-resistant high-speed baffle valve according to claim 9, characterized in that, In step S1, when the valve core (21) moves backward, it drives the telescopic pipe (25) to compress synchronously, and the spring (24) sleeved on the outer periphery of the valve core (21) is compressed synchronously.

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