Pressure stabilizing valve controlled by electromagnetic pilot operated valve

Abstract

The invention relates to the technical field of pressure maintaining valves, in particular to a pressure maintaining valve controlled by an electromagnetic pilot valve, which comprises a valve body, an air inlet and an air outlet which are communicated through a communication channel are arranged on the valve body, and a control cavity communicated with the air inlet is arranged in the valve body. A first sliding block for controlling the air inlet and the air outlet to be connected and disconnected is arranged in the control cavity in a sliding mode. A pressure stabilizing assembly used for stabilizing the air outlet pressure of the air outlet is arranged in the valve body, and a pilot assembly used for controlling the first sliding block to slide is further arranged in the valve body. The pressure stabilizing valve has the beneficial effects that sliding of the first sliding block is controlled through the pilot assembly, so that opening or closing of the pressure stabilizing valve is achieved, and gas is exhausted through the gas outlet after being subjected to pressure stabilization through the pressure stabilizing assembly; according to the pressure stabilizing valve, opening and closing of the pressure stabilizing valve are controlled through the pilot assembly, and the response speed is high; meanwhile, the pilot assembly and the pressure stabilizing assembly are integrated on one valve body, the structure is compact, and the size is small.

Description

Technical Field

[0001] The invention relates to the technical field of pressure-stabilizing valves, and in particular to a pressure-stabilizing valve controlled by an electromagnetic pilot valve. Background Art

[0002] In the field of industrial automation and fluid control, the performance and stability of the pressure-stabilizing valve as a key control element are crucial to the operation of the entire system. Most traditional pressure-stabilizing valves use an electromagnet to directly drive the valve core for control. Although this method meets the basic pressure-stabilizing requirements to a certain extent, it still has many shortcomings in terms of response speed and pressure-stabilizing effect. Therefore, developing a new type of pressure-stabilizing valve controlled by an electromagnetic pilot valve to improve the response speed and pressure-stabilizing effect has become an important direction for the development of current fluid control technology.

[0003] Limitations of existing pressure regulating valve technology:

[0004] Limited response speed: Traditional pressure-stabilizing valves rely on electromagnets to directly drive the valve core for control. Since the response speed of the electromagnet is affected by many factors, such as coil inductance, magnetic circuit design, valve core quality, etc., the response speed of the entire pressure-stabilizing valve is limited. In situations where fast response is required, this type of pressure-stabilizing valve often cannot meet the requirements.

[0005] Single pressure stabilization structure: The existing pressure stabilization valve has a relatively simple pressure stabilization structure design, usually using a single spring or diaphragm structure to achieve the pressure stabilization function. This structure is often not ideal in terms of pressure stabilization effect when dealing with complex working conditions and fluid pressure fluctuations, and is prone to problems such as large pressure fluctuations and low pressure stabilization accuracy.

[0006] Therefore, a pressure-stabilizing valve controlled by an electromagnetic pilot valve is needed to overcome the above-mentioned problems. Summary of the invention

[0007] In order to solve the above problems, an embodiment of the present invention provides a pressure-stabilizing valve controlled by an electromagnetic pilot valve, which achieves the purpose of solving the problems raised in the background technology.

[0008] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a pressure-stabilizing valve controlled by an electromagnetic pilot valve, comprising a valve body, the valve body is provided with an air inlet and an air outlet connected through a connecting channel, the valve body is provided with a control cavity connected to the air inlet, and a sliding block 1 for controlling the opening and closing of the air inlet and the air outlet is slidably provided inside the control cavity;

[0009] A pressure stabilizing component for stabilizing the outlet pressure of the air outlet is arranged inside the valve body, and a pilot component for controlling the sliding of the sliding block is also arranged inside the valve body.

[0010] As a further improvement of the above technical solution:

[0011] The pressure stabilizing assembly includes a pressure stabilizing chamber opened inside the valve body and connected to the connecting channel, a diaphragm assembly slidably arranged inside the pressure stabilizing chamber, a spring 1 arranged on one side of the diaphragm assembly, a sliding block 2 fixedly connected to the diaphragm assembly, and a spring 2 arranged on one side of the sliding block 2.

[0012] The voltage stabilizing assembly also includes a connecting rod fixedly connected between the diaphragm assembly and the sliding block 2, and a feedback channel opened inside the connecting rod; wherein a feedback cavity is provided on one side of the sliding block 2, and the connecting channel and the feedback cavity are connected through the feedback channel.

[0013] The interior of the control chamber is divided into a high-pressure chamber and a low-pressure chamber by a sliding block; the high-pressure chamber is connected to the air inlet.

[0014] The pilot assembly includes an air intake passage opened inside the valve body and connected to the high-pressure chamber, a valve core slidably arranged inside the valve body, an electromagnetic valve assembly arranged inside the valve body for controlling the movement of the valve core, a pilot chamber arranged inside the valve body and connected to the low-pressure chamber, and a balancing chamber opened inside the valve body.

[0015] A spring three is arranged inside the low-pressure chamber and is located on one side of the sliding block one.

[0016] The beneficial effects of the embodiments of the present invention are:

[0017] In actual use, the sliding of the sliding block 1 is controlled by the pilot component, so as to realize the opening or closing of the pressure-stabilizing valve, and the gas is discharged through the outlet after being stabilized by the pressure-stabilizing component; that is, in the present application, the opening and closing of the pressure-stabilizing valve is controlled by the pilot component, and the response speed is relatively fast; at the same time, the pilot component and the pressure-stabilizing component are integrated on a valve body, with a compact structure and a small size. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional schematic diagram of the present invention from a first viewing angle;

[0019] Figure 2 It is a cross-sectional schematic diagram of the second viewing angle of the present invention.

[0020] In the figure: 1. valve body; 2. air inlet; 3. air outlet; 4. control chamber; 5. sliding block 1; 6. voltage stabilizing assembly; 7. pilot assembly; 8. connecting channel;

[0021] 41. High pressure chamber; 42. Low pressure chamber; 43. Spring three;

[0022] 61. Pressure stabilizing chamber; 62. Diaphragm assembly; 63. Spring 1; 64. Sliding block 2; 65. Spring 2; 66. Connecting rod; 67. Feedback channel; 68. Feedback chamber;

[0023] 71. Air intake passage; 72. Valve core; 73. Solenoid valve assembly; 74. Pilot chamber; 75. Balance chamber. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0025] See also Figure 1 to Figure 2 The embodiment of the present invention discloses a pressure-stabilizing valve controlled by an electromagnetic pilot valve, including a valve body 1, on which an air inlet 2 and an air outlet 3 connected through a connecting passage 8 are arranged, a control chamber 4 connected to the air inlet 2 is arranged inside the valve body 1, and a sliding block 5 for controlling the opening and closing of the air inlet 2 and the air outlet 3 is slidingly arranged inside the control chamber 4; an air source is connected to the air inlet 2, and the opening and closing between the air inlet 2 and the air outlet 3 is controlled by the sliding block 5, so that the gas is discharged through the air outlet 3;

[0026] The valve body 1 is provided with a pressure stabilizing component 6 for stabilizing the outlet pressure of the outlet 3, and the valve body 1 is also provided with a pilot component 7 for controlling the sliding of the sliding block 5;

[0027] In actual use, the sliding of the sliding block 5 is controlled by the pilot component 7, so as to realize the opening or closing of the pressure-stabilizing valve, and the gas is discharged through the outlet 3 after being stabilized by the pressure-stabilizing component 6; that is, in the present application, the opening and closing of the pressure-stabilizing valve is controlled by the pilot component 7, and the response speed is relatively fast; at the same time, the pilot component 7 and the pressure-stabilizing component 6 are integrated on a valve body 1, with a compact structure and a small size.

[0028] As a further illustration of this application:

[0029] The pressure stabilizing assembly 6 includes a pressure stabilizing chamber 61 opened inside the valve body 1 and connected to the communication channel 8, a diaphragm assembly 62 slidably arranged inside the pressure stabilizing chamber 61, a spring 1 63 arranged on one side of the diaphragm assembly 62, a sliding block 2 64 fixedly connected to the diaphragm assembly 62, and a spring 2 65 arranged on one side of the sliding block 2 64;

[0030] In actual use, the gas enters the control chamber 4 through the air inlet 2, and is then discharged from the air outlet 3 through the connecting channel 8. Part of the gas enters the pressure-stabilizing chamber 61. When the outlet pressure of the air outlet 3 is too large, the pressure inside the pressure-stabilizing chamber 61 increases, thereby pushing the diaphragm assembly 62 to move, that is, driving the sliding block 64 to move, so that the sliding block 64 fits the valve body 1 more closely, that is, reducing the gas flow, thereby reducing the pressure; when the outlet pressure of the air outlet 3 is too small, the pressure inside the pressure-stabilizing chamber 61 decreases, and the diaphragm assembly 62 is pushed to move under the elastic force of the spring 1 63, that is, driving the sliding block 64 to move, so that the sliding block 64 fits the valve body 1 more loosely, that is, increasing the gas flow, thereby increasing the pressure.

[0031] As a further illustration of this application:

[0032] The voltage stabilizing assembly 6 further includes a connecting rod 66 fixedly connected between the diaphragm assembly 62 and the second sliding block 64, and a feedback channel 67 opened inside the connecting rod 66; wherein a feedback cavity 68 is provided on one side of the second sliding block 64, and the communication channel 8 and the feedback cavity 68 are connected through the feedback channel 67;

[0033] In actual use, part of the gas enters the feedback chamber 68 through the feedback channel 67. When the outlet pressure of the gas outlet 3 is too high, the pressure inside the feedback chamber 68 increases, thereby providing a larger thrust to the second sliding block 64, so that the second sliding block 64 fits the valve body 1 more closely, that is, the gas flow rate is reduced, thereby reducing the pressure; when the outlet pressure of the gas outlet 3 is too low, the pressure inside the feedback chamber 68 decreases, thereby providing a smaller thrust to the second sliding block 64, so that the second sliding block 64 fits the valve body 1 more loosely, that is, the gas flow rate is increased, thereby increasing the pressure;

[0034] That is, in the present application, the voltage stabilization operation is performed by the pressure stabilization chamber 61 and related structures and the feedback chamber 68 and related structures to improve the voltage stabilization effect.

[0035] As a further illustration of this application:

[0036] The interior of the control chamber 4 is divided into a high-pressure chamber 41 and a low-pressure chamber 42 by a sliding block 5; the high-pressure chamber 41 is connected to the air inlet 2;

[0037] The pilot assembly 7 includes an air inlet passage 71 opened inside the valve body 1 and connected to the high-pressure chamber 41, a valve core 72 slidably arranged inside the valve body 1, a solenoid valve assembly 73 arranged inside the valve body 1 for controlling the movement of the valve core 72, a pilot chamber 74 arranged inside the valve body 1 and connected to the low-pressure chamber 42, and a balance chamber 75 opened inside the valve body 1;

[0038] In actual use, part of the gas in the high-pressure chamber 41 enters the interior of the air inlet passage 71. When the solenoid valve assembly 73 is energized, its adsorption valve core 72 moves, so that the valve core 72 blocks the air inlet passage 71. At this time, the air pressure in the high-pressure chamber 41 pushes the sliding block 5 to move, so that the gas in the high-pressure chamber 41 can enter the interior of the connecting passage 8, that is, the opening of the pressure-stabilizing valve is realized; when the solenoid valve assembly 73 is not energized, the valve core 72 is attached to the interior of the balancing chamber 75 under the elastic force of its side spring. At this time, the gas in the air inlet passage 71 enters the pilot chamber 74, so that the gas enters the interior of the low-pressure chamber 42. The gas pressure in the low-pressure chamber 42 pushes the sliding block 5 to move, so as to close the high-pressure chamber 41, that is, the closing of the pressure-stabilizing valve is realized;

[0039] When the air pressure inside the high-pressure chamber 41 pushes the sliding block 5 to move, the gas inside the low-pressure chamber 42 passes through the pilot chamber 74 and then enters the balance chamber 75 to be discharged.

[0040] As a further illustration of this application:

[0041] The interior of the low-pressure chamber 42 is provided with a spring three 43 located on one side of the sliding block one 5; in actual use, since the gas pressure inside the low-pressure chamber 42 is much smaller than the gas pressure inside the high-pressure chamber 41, a balance is achieved by setting the spring three 43; that is, when the solenoid valve assembly 73 is energized, the gas pressure inside the high-pressure chamber 41 needs to overcome the gas pressure inside the low-pressure chamber 42 and the elastic force of the spring three 43 to push the sliding block one 5 to move; when the solenoid valve assembly 73 is not energized, the sum of the gas pressure inside the low-pressure chamber 42 and the elastic force of the spring three 43 is greater than the gas pressure in the high-pressure chamber 41, thereby causing the sliding block one 5 to move.

[0042] It should be noted that in the description of the present invention, the terms "center, up, down, left, right, vertical, horizontal, inside, outside" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second, third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0045] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pressure-stabilizing valve controlled by an electromagnetic pilot valve, characterized in that: The invention comprises a valve body (1), the valve body (1) being provided with an air inlet (2) and an air outlet (3) which are connected via a connecting passage (8), the valve body (1) being provided with a control chamber (4) which is connected with the air inlet (2), the control chamber (4) being provided with a sliding block (5) which is slidably provided inside the control chamber (4) and controls the opening and closing of the air inlet (2) and the air outlet (3); The valve body (1) is provided with a pressure stabilizing component (6) for stabilizing the outlet pressure of the outlet (3), and the valve body (1) is also provided with a pilot component (7) for controlling the sliding of the sliding block 1 (5).

2. The pressure-stabilizing valve controlled by an electromagnetic pilot valve according to claim 1, characterized in that: The pressure stabilizing assembly (6) comprises a pressure stabilizing chamber (61) opened inside the valve body (1) and connected to the connecting channel (8), a diaphragm assembly (62) slidably arranged inside the pressure stabilizing chamber (61), a spring (63) arranged on one side of the diaphragm assembly (62), a sliding block (64) fixedly connected to the diaphragm assembly (62), and a spring (65) arranged on one side of the sliding block (64).

3. The pressure-stabilizing valve controlled by the electromagnetic pilot valve according to claim 2, characterized in that: The voltage stabilizing assembly (6) further comprises a connecting rod (66) fixedly connected between the diaphragm assembly (62) and the second sliding block (64), and a feedback channel (67) opened inside the connecting rod (66); wherein a feedback chamber (68) is provided on one side of the second sliding block (64), and the connecting channel (8) and the feedback chamber (68) are connected via the feedback channel (67).

4. The pressure-stabilizing valve controlled by an electromagnetic pilot valve according to claim 1, characterized in that: The interior of the control chamber (4) is divided into a high-pressure chamber (41) and a low-pressure chamber (42) by a sliding block (5); the high-pressure chamber (41) is connected to the air inlet (2).

5. The pressure-stabilizing valve controlled by an electromagnetic pilot valve according to claim 4, characterized in that: The pilot assembly (7) comprises an air inlet passage (71) opened inside the valve body (1) and connected to the high-pressure chamber (41), a valve core (72) slidably arranged inside the valve body (1), an electromagnetic valve assembly (73) arranged inside the valve body (1) for controlling the movement of the valve core (72), a pilot chamber (74) arranged inside the valve body (1) and connected to the low-pressure chamber (42), and a balance chamber (75) opened inside the valve body (1).

6. The pressure-stabilizing valve controlled by an electromagnetic pilot valve according to claim 5, characterized in that: The low-pressure chamber (42) is provided with a spring three (43) located on one side of the sliding block one (5).

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