Pilot valve
By introducing prereaction components into the pilot solenoid valve, the magnetic suction structure and pre-action structure can be used to achieve rapid opening and automatic reset of the plug head, which solves the problem of slow response speed in the prior art and improves the rapid response of the valve body ability.
Patent Information
- Application Number
- CN202420524072.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-18
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-18
AI Technical Summary
The existing pilot solenoid valves require a certain amount of time during opening and closing, resulting in slow response speed of the valve body and are not suitable for application scenarios that require rapid response.
Pre-reaction components, including magnetic suction structure and pre-action structure, through the magnetic suction connection between the electromagnetic coil and the static iron core, and the cooperation of the pressure sensor and the microcontroller, the plug head is pre-moved and opened quickly, ensuring the complete gas circulation. and automatically reset through limit springs to improve response speed.
It significantly speeds up the response speed of the valve body, adapts to the needs of fast response, and avoids application restrictions caused by slow response speed.
Smart Images
Figure CN222209179U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pilot valves, and in particular to a pilot valve. Background Art
[0002] The pilot valve is an auxiliary valve used to manipulate the control mechanism in other valves or components. It has the characteristics of relatively small input signal and can accept multiple input methods. Pilot valves are widely used in various systems. According to different uses, they can be divided into many types, such as pilot safety valves, pilot solenoid valves and pilot solenoid reversing valves.
[0003] Among them, the pilot solenoid valve first opens the pilot valve under the action of electromagnetic force, and then the gas enters the pipeline, and uses air pressure to push the valve core to complete the circulation of the gas path. When the valve of this structure is opened, the minimum pressure of the solenoid valve must not be lower than 0.05MPa, and there must be a pilot pressure, otherwise it cannot be opened. However, in the prior art, during use, a pilot control mechanism is required to control the opening and closing of the valve. In this process, the pilot control mechanism needs a certain amount of time to operate, resulting in a slow response speed of the valve body, which is not suitable for places that require a quick response. Utility Model Content
[0004] The utility model aims to provide a pilot valve to solve the problem that during use, a pilot control mechanism is required to control the opening and closing of the valve. During this process, the pilot control mechanism needs a certain amount of time to operate, resulting in a slow response speed of the valve body, which is not suitable for places where a quick response is required.
[0005] The utility model provides the following technical solution: a pilot valve comprises a valve body main seat, the lower bottom end of the valve body main seat is fixedly connected to an air inlet pipe, the outer side wall of the valve body main seat is fixedly connected to an air outlet pipe, an air chamber for gas circulation is formed inside the valve body main seat, the air outlet pipe is communicated with the air chamber, a plug is slidably connected to the inside of the air inlet pipe, an inner top end of the air chamber is fixedly connected to an inner tube, and a pre-reaction component for driving the plug to move is arranged inside the inner tube.
[0006] With the above scheme, the gas enters into the air inlet pipe, and a plug is provided in the air inlet pipe. In order to increase the opening time of the device, a pre-reaction component is provided to enable the component to be fine-tuned before formal movement, so as to open the device faster to adapt to places with fast response. When the plug is removed, the gas enters into the air chamber through the air inlet pipe, and enters into the air outlet pipe through the air chamber to ensure complete air circulation.
[0007] As a preferred embodiment of the above technical solution, the pre-reaction component includes a magnetic attraction structure and a pre-action structure, the magnetic attraction structure includes an electromagnetic coil fixedly connected to the top end of the inner tube to generate a magnetic field, the lower bottom end of the electromagnetic coil is electrically connected to a static iron core, the inner bottom end of the inner tube is slidably connected to a moving iron core that cooperates with the static iron core to form a magnetic attraction connection, and the moving iron core is fixedly connected to the plug.
[0008] By adopting the above scheme, the magnetic attraction structure can remove the block from the intake pipe when in use, and the pre-action structure is to prepare the block before it moves. The electromagnetic coil drives the static iron core to attract the moving iron core when working. At this time, the moving iron core moves and drives the plug to be removed from the intake pipe, and the airflow can enter the air chamber.
[0009] As a preferred embodiment of the above technical solution, the magnetic attraction structure also includes a reset part that drives the moving iron core to automatically reset, and the reset part includes pressure holes opened on both sides of the static iron core, and the inner top end of the pressure hole is fixedly connected to a limit spring, and the lower bottom end of the limit spring is fixedly connected to the upper top end of the moving iron core.
[0010] By adopting the above scheme, when the electromagnetic coil is working, the electricity generated will cause the static iron core to attract the moving iron core. On the contrary, after the electromagnetic coil stops working, the static iron core will no longer attract the moving iron core. At this time, the moving iron core will automatically reset under the elastic action of the limit spring, and the plug will return to the intake pipe and continue to block it. When used next time, the airflow will re-enter the air chamber.
[0011] As a preferred embodiment of the above technical solution, the pre-action structure includes a pressure sensor fixedly connected to the lower end surface of the plug and subjected to air pressure, and a side hole opened on one side of the electromagnetic coil, the inner wall of the side hole is fixedly connected to a microcontroller, the outside of the microcontroller is electrically connected to an inductor that cooperates with the pressure sensor, the inside of the side hole is fixedly connected to a capacitor that forms an electrical connection with the electromagnetic coil, and the microcontroller and the capacitor are electrically connected.
[0012] With the above solution, the electromagnetic coil needs to be connected to an external current limiter before working. Since the electromagnetic coil is electrically connected to the capacitor, part of the current on the electromagnetic coil will enter the capacitor for storage, and the function of the current limiter is to ensure that the amplitude and direction of the external current match the current discharged by the capacitor. When the pressure sensor is subjected to pressure, the signal will be amplified and received by the sensor, and the microcontroller controls the capacitor to release the stored current and retransmit it to the electromagnetic coil. The electromagnetic coil drives the static iron core to attract the moving iron core, thereby driving the plug to move up and completing the pre-action structure.
[0013] As a preferred embodiment of the above technical solution, a mounting plate for mounting the valve body main seat is placed on the upper top of the valve body main seat.
[0014] By adopting the above solution, the main seat of the valve body can be conveniently installed at a required location through the mounting plate, thus avoiding the valve body being unable to be used due to installation reasons during use.
[0015] As a preferred embodiment of the above technical solution, a sealing ring is fixedly sleeved on the outer bottom end of the plug to increase the sealing performance of the interior of the air intake pipe.
[0016] By adopting the above solution, a sealing ring is set on the outside of the plug. During use, the sealing effect inside the air inlet pipe can be greatly increased, avoiding that part of the gas medium enters the air chamber when the device is not in use, causing adverse effects.
[0017] As a preferred embodiment of the above technical solution, the air inlet pipe and the air outlet pipe are arranged at a vertical angle.
[0018] With the above solution, the air inlet pipe and the air outlet pipe are arranged vertically, and during the transmission of the gas, the gas can be easily sent into the gas chamber as a transfer, avoiding the influence of the pipeline due to the high pressure of the gas.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] When the utility model is in use, the pressure generated by the gas entering the intake pipe will be applied to the pressure sensor, and the pressure sensor will amplify its own signal after being subjected to the instantaneous pressure. After receiving the signal, the sensor on the microcontroller will control the capacitor to discharge and transmit the generated electricity to the electromagnetic coil. When the electromagnetic coil is working, the magnetic field generated will attract the moving iron core to move slightly through the static iron core. In this way, the plug is controlled to move in advance. When the electromagnetic coil is connected to the external circuit, it can continue to attract the moving iron core to continue moving, thereby accelerating the response speed of the device to adapt to places where quick response is required. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is the schematic diagram of the pilot valve structure;
[0022] Figure 2 This is a schematic diagram of the valve body split structure in the pilot valve;
[0023] Figure 3 This is a schematic diagram of the split structure of the valve body main seat in the pilot valve;
[0024] Figure 4 This is a schematic diagram of the split structure of the inner tube in the pilot valve.
[0025] In the figure: 1. valve body main seat; 11. mounting plate; 12. air inlet pipe; 13. air outlet pipe; 14. pressure sensor; 15. air chamber; 2. inner tube; 21. side hole; 22. microcontroller; 23. sensor; 24. capacitor; 3. electromagnetic coil; 31. static iron core; 32. pressure hole; 33. limit spring; 34. moving iron core; 35. plug; 36. sealing ring. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0027] like Figure 1 and Figure 3 As shown, the utility model provides a technical solution: a pilot valve, including a valve body main seat 1, a mounting plate 11 for mounting the valve body main seat 1 is placed on the top of the valve body main seat 1, which is conducive to the reasonable installation of the valve body main seat 1, the lower bottom end of the valve body main seat 1 is fixedly connected with an air inlet pipe 12, and the outer side wall of the valve body main seat 1 is fixedly connected with an air outlet pipe 13, the air inlet pipe 12 and the air outlet pipe 13 are arranged at a vertical angle, which can smoothly transmit the gas, and the interior of the valve body main seat 1 is formed with an air chamber 1 for gas circulation 5. As a gas transfer, to avoid damage to the pipeline due to excessive gas pressure, the outlet pipe 13 is communicated with the air chamber 15, and a plug 35 is slidably connected to the inside of the air inlet pipe 12. A sealing ring 36 is fixedly sleeved on the outer bottom end of the plug 35 to increase the sealing performance of the inside of the air inlet pipe 12, which can block the air inlet pipe 12 to avoid leakage and adverse effects. The inner top end of the air chamber 15 is fixedly connected to the inner pipe 2, and a pre-reaction component is arranged inside the inner pipe 2 to drive the plug 35 to move.
[0028] like Figure 2 , Figure 3 and Figure 4As shown, the pre-reaction component includes a magnetic attraction structure and a pre-action structure. The magnetic attraction structure includes an electromagnetic coil 3 fixedly connected to the top end of the inner tube 2 to generate a magnetic field. The lower bottom end of the electromagnetic coil 3 is electrically connected to a static iron core 31. The inner bottom end of the inner tube 2 is slidably connected to a moving iron core 34 that cooperates with the static iron core 31 to form a magnetic attraction connection. The electromagnetic coil 3 generates a magnetic field through electric current, and the static iron core 31 will drive the moving iron core 24 to move. The moving iron core 34 is fixedly connected to the plug 35. The magnetic attraction structure also includes a reset part that drives the moving iron core 34 to automatically reset. When the electromagnetic coil 3 loses current, the static iron core 31 will no longer attract the moving iron core 34, and the moving iron core 34 is reset with the help of the reset part. The reset part includes pressure holes 32 opened on both sides of the static iron core 31. The inner top of the pressure hole 32 is fixedly connected to a limit spring 33. The lower bottom end of the limit spring 33 is connected to the moving iron core The upper top of the core 34 is fixedly connected, and the limit spring 33 will be compressed during the upward movement of the moving iron core 34. On the contrary, after the moving iron core 34 is no longer attracted, the moving iron core 34 will automatically reset due to the elastic force. The pre-action structure includes a pressure sensor 14 fixedly connected to the lower end face of the plug 35 and subjected to air pressure, and a side hole 21 opened on one side of the electromagnetic coil 3. The inner wall of the side hole 21 is fixedly connected with a microcontroller 22, and the outside of the microcontroller 22 is electrically connected with a sensor 23 that cooperates with the pressure sensor 14. The inside of the side hole 21 is fixedly connected with a capacitor 24 that forms an electrical connection with the electromagnetic coil 3. The microcontroller 22 and the capacitor 24 are electrically connected. When the sensor 23 on the microcontroller 22 receives the signal from the pressure sensor 12, it will control the capacitor 24 to release current, thereby performing pre-processing through the magnetic attraction structure.
[0029] Working principle: When in use, connect the air inlet pipe 12 and the air outlet pipe 13 to the external ports respectively, then open the air pressure mechanism first, so that the air pressure can enter the air inlet pipe 12, and the pressure generated by the gas will be applied to the pressure sensor 14, and the pressure sensor 14 will amplify its own signal after being subjected to instantaneous pressure. After receiving the signal, the sensor 23 on the microcontroller 22 will control the capacitor 24 to discharge and transmit the generated electricity to the electromagnetic coil 3. When the electromagnetic coil 3 is working, the magnetic field generated will attract the moving iron core 34 through the static iron core 31 to move slightly, and in this way, the plug 35 is controlled to move in advance. When the electromagnetic coil 3 is connected to the external circuit, it can continue to attract the moving iron core 34 continues to move, thereby speeding up the reaction speed of the device to adapt to places where quick response is required. When the plug 35 is retracted into the interior of the valve body main seat 1, the gas medium in the inlet pipe 12 enters the air chamber 15 and is discharged through the outlet pipe 13. After the pressure sensor 14 is subjected to gas pressure for a long time, it will only generate a signal due to the first impact, and will not work due to long-term impact. At the same time, when the electromagnetic coil 3 is working, part of the electricity will enter the capacitor 24 through the wire for storage to facilitate next use. When power is cut off, the static iron core 31 no longer attracts the moving iron core 34. Under the elastic action of the limit spring 33, the moving iron core 34 and the plug 35 are driven to reset.
[0030] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.
Claims
1. A pilot valve, comprising a valve body main seat (1), characterized in that: The lower bottom end of the valve body main seat (1) is fixedly connected to an air inlet pipe (12), the outer side wall of the valve body main seat (1) is fixedly connected to an air outlet pipe (13), an air chamber (15) for gas circulation is formed inside the valve body main seat (1), the air outlet pipe (13) is communicated with the air chamber (15), a plug (35) is slidably connected to the inside of the air inlet pipe (12), the inner top end of the air chamber (15) is fixedly connected to an inner tube (2), and the inner tube (2) is provided with a A pre-reaction component for moving a movable plug head (35), the pre-reaction component comprising a magnetic attraction structure and a pre-action structure, the magnetic attraction structure comprising an electromagnetic coil (3) fixedly connected to the top end of an inner tube (2) to generate a magnetic field, the lower end of the electromagnetic coil (3) being electrically connected to a static iron core (31), the inner bottom end of the inner tube (2) being slidably connected to a movable iron core (34) that cooperates with the static iron core (31) to form a magnetic attraction connection, and the movable iron core (34) being fixedly connected to the plug head (35).
2. The pilot valve according to claim 1, characterized in that: The magnetic attraction structure also includes a reset portion for driving the moving iron core (34) to automatically reset, the reset portion includes pressure holes (32) opened on both sides of the static iron core (31), the inner top end of the pressure hole (32) is fixedly connected to a limit spring (33), and the lower bottom end of the limit spring (33) is fixedly connected to the upper top end of the moving iron core (34).
3. The pilot valve according to claim 1, characterized in that: The pre-action structure comprises a pressure sensor (14) fixedly connected to the lower end surface of the plug (35) and subjected to air pressure, and a side hole (21) opened on one side of the electromagnetic coil (3); a microcontroller (22) is fixedly connected to the inner wall of the side hole (21); the outside of the microcontroller (22) is electrically connected to an inductor (23) that cooperates with the pressure sensor (14); the inside of the side hole (21) is fixedly connected to a capacitor (24) that is electrically connected to the electromagnetic coil (3); the microcontroller (22) and the capacitor (24) are electrically connected.
4. The pilot valve according to claim 1, characterized in that: A mounting plate (11) for mounting the valve body main seat (1) is placed on the upper top of the valve body main seat (1).
5. The pilot valve according to claim 1, characterized in that: The outer bottom end of the plug (35) is fixedly sleeved with a sealing ring (36) for increasing the sealing performance of the interior of the air intake pipe (12).
6. The pilot valve according to claim 1, characterized in that: The air inlet pipe (12) and the air outlet pipe (13) are arranged at a vertical angle.