Self-adaptive adjustment small safety valve

Abstract

The utility model provides a self-adaptive adjustment small safety valve which comprises a valve body, a movable assembly and a coil, the valve body is provided with a movable cavity, a bobbin is connected with the movable cavity, the movable assembly is arranged in the movable cavity, and the coil is arranged on the periphery of the movable assembly. The coil is powered on to generate a magnetic field, the movable assembly moves towards the air inlet due to the magnetic field acting force, and meanwhile the damping block at the end is pre-pressed to achieve sealing. When the pressure of the air passage rises to the set pressure, the air in the air passage can overcome the acting force of the magnetic field to push the movable assembly open to release air, and when the pressure sensor detects that the air release pressure does not reach the safety value, the voltage is automatically cut off or reduced, so that the pressure of the air passage is reduced, and the safety of the product is ensured. Damping blocks at the two ends of the movable assembly can reduce noise generated by collision, and damping sealing is achieved. The connection position of the spool and the movable cavity adopts an inclined plane design, so that vortex can be eliminated, air resistance can be reduced, and air leakage speed can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a small self - adaptive regulating safety valve. Background Art

[0002] In the pneumatic products of the automotive seat comfort system, the air circuit is controlled by a solenoid valve. The air circuit module controls the inflation and deflation of each air circuit through the solenoid valve to realize the action of the air circuit module. As Figure 1 shown, the pressure regulating valve includes a buckle plate 5, a silencing piece 5, a guide rod 13, a sealing gasket 12 and a spring. The pressure of the main air duct 11 is set by the spring. When the pressure of the main air duct 11 is greater than the set value, the air flow pushes open the sealing gasket 12, and the high - pressure air in the main air duct 11 is discharged from the shown path through the spring and the silencing piece 5. However, when the high - pressure gas passes through the spring, it will drive the spring to vibrate, causing abnormal noise, resulting in unstable pressure regulation, deflating in advance before reaching the set pressure value, and the working pressure of the solenoid valve cannot be adjusted later. Therefore, it cannot be adjusted by software after detecting that the preset pressure is exceeded. Summary of the Utility Model

[0003] The utility model provides a small self - adaptive regulating safety valve to solve the technical problems raised in the background art.

[0004] The technical solution adopted by the utility model to solve the above - mentioned technical problems is as follows:

[0005] The small self - adaptive regulating safety valve is characterized by comprising:

[0006] A valve body, a plug cover is provided at the end of the valve body. The valve body has a movable cavity. An air inlet is provided at one end of the movable cavity far from the plug cover, and the air inlet is connected to an air duct. A spool is provided below the movable cavity in the valve body. One end of the spool is provided with a silencing piece, and the other end is communicated with the movable cavity. A pressure sensor is installed on the spool.

[0007] A movable component, which is movably arranged in the movable cavity. Shock - absorbing blocks are provided at both ends of the movable component. The size of the shock - absorbing blocks is adapted to the air inlet at the end of the movable cavity. A permanent magnet is provided in the middle of the movable component.

[0008] A coil, which is arranged on the periphery of the movable component and outside the valve body.

[0009] Further, a deflation port is provided at the bottom of the movable cavity near the air inlet, and the deflation port is connected to the spool.

[0010] Further, the connection position between the spool and the deflation port adopts an inclined - plane design, and the inclined angle is greater than 120°.

[0011] Further, the bottom of the spool is connected with the pressure sensor through a pipeline.

[0012] Further, the shock-absorbing block is made of silica gel or rubber.

[0013] Further, an installation groove is provided on the outer side of the valve body, and the coil is embedded in the installation groove.

[0014] Further, a sealing ring is provided between the plug cover at the end of the valve body and the movable cavity.

[0015] Compared with the prior art, the utility model has the following advantages or beneficial effects:

[0016] When the coil is energized, a magnetic field is generated. Due to the magnetic field force, the movable component moves towards the air inlet position, and at the same time, the shock-absorbing block at the end is pre-pressed to achieve sealing. When the airway pressure rises to the set pressure, the airway gas will overcome the magnetic field force and push open the movable component to start deflating. When the pressure sensor detects that the deflating pressure does not reach the safety value, it will automatically cut off or reduce the voltage, thereby reducing the airway pressure and ensuring the safety of the product. Shock-absorbing blocks are provided at both ends of the movable component to reduce the noise generated by the collision between the movable component and the movable cavity during movement, and the size of the shock-absorbing block is adapted to the air inlet of the movable cavity to achieve shock absorption and sealing. The sound-absorbing sheet at one end of the spool can be used to reduce the noise generated by deflation and improve comfort. The connection position between the spool and the movable cavity adopts an inclined surface design, which can eliminate eddy currents, reduce air resistance, and provide the deflating speed. Description of the Drawings

[0017] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, the utility model and its features, shape, and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the focus is on showing the gist of the utility model.

[0018] Figure 1 is a structural schematic diagram of an existing solenoid valve;

[0019] Figure 2 is a structural schematic diagram of an embodiment of the utility model;

[0020] In the figure, 1. valve body, 2. plug cover, 3. movable cavity, 4. spool, 5. sound-absorbing sheet, 6. pressure sensor, 7. movable component, 8. shock-absorbing block, 9. permanent magnet, 10. coil, 11. main airway, 12. gasket, 13. guide rod, 14. spring, 15. buckle plate. Detailed Embodiments

[0021] The following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. It is obvious that the embodiments described are only some of the embodiments of the present invention, rather than all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0022] like Figure 2 As shown, this embodiment provides an adaptively adjustable small safety valve, comprising a valve body 1, a movable assembly 7, and a coil 10. A plug 2 is provided at the right end of the valve body 1, and an active chamber 3 is provided within the valve body 1. A sealing ring is provided between the right end of the active chamber 3 and the plug 2 to prevent air leakage from the end of the valve body 1. An air inlet is provided at the left end of the active chamber 3, which is connected to the airway. A spool 4 is provided within the valve body 1 and below the active chamber 3. The left end of the spool 4 is connected to a vertically arranged silencer 5, and the right end is connected to the active chamber 3. A pressure sensor 6 is connected to the lower middle portion of the spool 4 via a pipeline. The movable assembly 7 is provided within the active chamber 3. Shock absorbers 8 are provided at both ends of the movable assembly 7. The shock absorbers 8 are made of silicone and are sized to fit the air inlet at the left end of the active chamber 3, achieving end shock absorption and sealing. A permanent magnet 9 is provided in the middle of the movable assembly 7. The coil 10 is arranged on the periphery of the movable component 7 and located on the outside of the valve body 1; preferably, a mounting groove is provided on the outside of the valve body 1, and the coil 10 is embedded in the mounting groove.

[0023] Further explanation: a channel for airflow is formed between the active chamber 3 and the active assembly, and a vent is provided at the left bottom of the active chamber 3, which is connected to the spool 4. Preferably, the connection between the vent and the spool 4 adopts a bevel design with an angle greater than 120°. This design can eliminate vortices generated by the airflow, reduce air resistance, and increase the speed of air release.

[0024] The instructions for use of the adaptive regulating small safety valve are as follows:

[0025] When the coil is energized, it generates a magnetic field, which forces the movable component to the left and preloads the damping block at the end, achieving a seal. When the airway pressure rises to the set point, the air in the airway overcomes the magnetic force, pushing the movable component open and starting to deflate. When the pressure sensor detects that the deflation pressure has not reached a safe value, it automatically cuts off or reduces the voltage, thereby reducing the airway pressure and ensuring product safety.

[0026] An adaptive adjustment small safety valve provided in this embodiment has a simple structure and small size. Shock absorbers are provided at both ends of the movable component to reduce the noise generated by the collision between the movable component and the movable cavity during movement. Moreover, the size of the shock absorber is adapted to the air inlet of the movable cavity to achieve shock absorption and sealing. The sound-absorbing sheet at one end of the spool can be used to reduce the noise generated by air leakage and improve comfort. The connection position between the spool and the movable cavity adopts an inclined surface design, which can eliminate eddy currents, reduce air resistance, and provide the speed of air leakage.

[0027] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An adaptive adjustment small safety valve, characterized in that, Comprising: A valve body (1), a plug cover (2) is provided at the end of the valve body (1), the valve body (1) has a movable cavity (3), an air inlet is provided at one end of the movable cavity (3) away from the plug cover (2), this air inlet is connected to an air passage, a spool (4) is provided inside the valve body (1) and below the movable cavity (3), a silencing piece (5) is provided at one end of the spool (4), the other end is communicated with the movable cavity (3), and a pressure sensor (6) is installed on the spool (4); A movable component (7), movably arranged in the movable cavity (3), damping blocks (8) are provided at both ends of the movable component (7), the size of the damping blocks (8) is adapted to the air inlet at the end of the movable cavity (3), and a permanent magnet (9) is provided in the middle of the movable component (7); A coil (10), arranged on the periphery of the movable component (7) and outside the valve body (1).

2. The adaptive adjustment small safety valve according to claim 1, wherein A vent port is provided at the bottom of the movable cavity (3) near the air inlet position, and this vent port is connected to the spool (4).

3. The adaptive adjustment small safety valve according to claim 2, characterized in that, The connection position between the spool (4) and the vent port adopts an inclined surface design, and the inclined angle is greater than 120°.

4. The adaptive adjustment small safety valve according to claim 1, wherein The bottom of the spool (4) is connected to the pressure sensor (6) through a pipeline.

5. The adaptive adjustment small safety valve according to claim 1, characterized in that, The damping blocks (8) are made of silica gel or rubber.

6. The adaptive adjustment small safety valve according to claim 1, wherein, An installation groove is provided on the outside of the valve body (1), and the coil (10) is embedded in this installation groove.

7. The adaptive adjustment small safety valve according to claim 1, wherein A sealing ring is provided between the plug cover (2) at the end of the valve body (1) and the movable cavity (3).

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