Pressure stabilizing structure

Abstract

A pressure stabilizing structure comprises a pressure stabilizing valve body, the pressure stabilizing valve body is provided with an air inlet hole located in the front end, an air outlet hole located in the rear end and a pressure stabilizing cavity communicating the air inlet hole with the air outlet hole, and a pressure stabilizing valve element capable of moving in the front-back direction and a pressure stabilizing spring used for applying backward thrust to the pressure stabilizing valve element are arranged in the pressure stabilizing cavity. The front end of the pressure stabilizing valve element is provided with a plug corresponding to the air inlet hole, a flow guide hole is formed in the side peripheral wall of the front end of the pressure stabilizing valve element, the rear end of the pressure stabilizing valve element is provided with an overflowing hole which extends forwards and is communicated with the flow guide hole, and the side peripheral wall of the middle of the pressure stabilizing valve element and the side peripheral wall of the front portion of the pressure stabilizing cavity are relatively sealed. The rear end of the overflowing hole is provided with a stepped hole with an enlarged hole diameter, and the hole diameter of the stepped hole is larger than the outer diameter of the front end of the pressure stabilizing valve element. According to the scheme, air pressure fluctuation of the air inlet is counteracted through elastic force of the pressure stabilizing spring, and stability of output air pressure of the air outlet is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air valves, and particularly relates to a voltage stabilizing structure. Background Art

[0002] A pressure stabilizing valve is an adaptive pneumatic regulating valve, which can automatically adjust the air pressure adaptively when there are large fluctuations in the input air pressure, so that the output air pressure fluctuates only within a very small range, thus meeting the use requirements of a constant air pressure at the rear end. The existing pressure stabilizing valve structure has poor reliability during use and the regulating effect on air pressure is not stable enough. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the problems that the existing pressure stabilizing valve structure has poor reliability during use and the regulating effect on air pressure is not stable enough.

[0004] To solve the above problems, the utility model provides a voltage stabilizing structure, including a voltage stabilizing valve body, the voltage stabilizing valve body is provided with an air inlet hole at the front end, an air outlet hole at the rear end, and a voltage stabilizing cavity communicating the air inlet hole and the air outlet hole. A voltage stabilizing valve core that can move in the front-rear direction and a voltage stabilizing spring for applying a backward thrust to the voltage stabilizing valve core are arranged in the voltage stabilizing cavity. A plug corresponding to the air inlet hole is arranged at the front end of the voltage stabilizing valve core. A diversion hole is arranged on the side peripheral wall at the front end of the voltage stabilizing valve core. A flow-through hole extending forward and communicating with the diversion hole is arranged at the rear end of the voltage stabilizing valve core. The side peripheral wall in the middle of the voltage stabilizing valve core is relatively sealed with the side peripheral wall at the front part of the voltage stabilizing cavity. A stepped hole with an enlarged aperture is arranged at the rear end of the flow-through hole, and the aperture of the stepped hole is larger than the outer diameter of the front end of the voltage stabilizing valve core.

[0005] Compared with the prior art, in the above scheme, a voltage stabilizing valve core that can move in the front-rear direction and a voltage stabilizing spring for applying a backward thrust to the voltage stabilizing valve core are designed in the voltage stabilizing cavity. In the initial state, the voltage stabilizing spring pushes the voltage stabilizing valve core backward so that the plug is separated from the air inlet hole. The gas flowing into the front part of the decompression cavity from the air inlet hole will enter the flow-through hole from the diversion hole and flow to the air outlet hole at the rear part of the decompression cavity. The air outlet hole is connected to the user's use end. Since a stepped hole with an enlarged aperture is arranged at the rear end of the flow-through hole, and the aperture of the stepped hole is larger than the outer diameter of the front end of the voltage stabilizing valve core, as the gas continuously enters the flow-through hole, the forward gas thrust received by the voltage stabilizing valve core will be greater than the backward gas thrust. The voltage stabilizing valve core will gradually move forward and the voltage stabilizing spring will be compressed until the forward gas thrust received by the voltage stabilizing valve core is equal to the sum of the backward gas thrust and the elastic force of the voltage stabilizing spring, and the voltage stabilizing valve core reaches a balanced state. Subsequently, even if there are fluctuations in the air pressure at the air inlet hole, the voltage stabilizing spring will immediately adjust the voltage stabilizing valve core, that is, the elastic force of the voltage stabilizing spring offsets the fluctuations in the air pressure at the air inlet hole, ensuring the stability of the air pressure output at the air outlet hole.

[0006] In an improved solution, a receiving groove is circumferentially arranged on the side peripheral wall at the rear of the voltage stabilizing cavity, a stepped boss is circumferentially arranged on the side peripheral wall at the rear end of the voltage stabilizing valve core, the voltage stabilizing spring is located in the receiving groove, the front end of the voltage stabilizing spring abuts against the front side wall of the receiving groove and the rear end abuts against the stepped boss, so that the structure is compact and the voltage stabilizing spring can stably apply a backward thrust to the voltage stabilizing valve core.

[0007] In an improved solution, a ring boss surrounding the air inlet hole is arranged on the front side wall of the voltage stabilizing cavity, and the outer diameter of the ring boss gradually decreases from front to back, so that when the voltage stabilizing valve core moves forward, the plug will abut against the ring boss to close the air inlet hole.

[0008] In an improved solution, the number of the diversion holes is even and they are circumferentially distributed on the side peripheral wall at the front end of the voltage stabilizing valve core at equal intervals, so as to ensure that the air flow in the front part of the voltage stabilizing cavity can flow into the flow-through hole more evenly through the diversion holes.

[0009] In an improved solution, it further includes an air inlet valve body, the air inlet valve body is provided with an air inlet valve cavity and an inlet and an outlet both communicated with the air inlet valve cavity, the air inlet valve cavity is provided with a movably adjustable air inlet valve rod and the air inlet valve rod is used to control the on-off between the inlet and the outlet, the front end of the voltage stabilizing valve body is butted against the outlet of the air inlet valve body, so that whether the air inlet hole at the front end of the voltage stabilizing valve body intakes air can be controlled by adjusting the air inlet valve rod, and the operation is simple and convenient.

[0010] In an improved solution, the outlet of the air inlet valve body is provided with an internal thread, the front end of the voltage stabilizing valve body is provided with an external thread, and the front end of the voltage stabilizing valve body is screwed to the outlet of the air inlet valve body, so as to ensure the convenient assembly between the air inlet valve body and the voltage stabilizing valve body.

[0011] In an improved solution, a sealing ring is arranged between the front end of the voltage stabilizing valve body and the outlet of the air inlet valve body, so as to improve the airtightness between the front end of the voltage stabilizing valve body and the outlet of the air inlet valve body. Description of the Drawings

[0012] Figure 1 It is a cross-sectional schematic view of a voltage stabilizing structure.

[0013] Description of the reference numerals,

[0014] 1. Voltage stabilizing valve body; 11. Air inlet hole; 12. Air outlet hole; 13. Voltage stabilizing cavity; 131. Receiving groove; 132. Ring boss; 2. Voltage stabilizing valve core; 21. Plug; 22. Diversion hole; 23. Flow-through hole; 24. Stepped hole; 25. Stepped boss; 3. Voltage stabilizing spring; 4. Air inlet valve body; 41. Air inlet valve cavity; 42. Inlet; 43. Outlet; 5. Air inlet valve rod; 6. Sealing ring. Detailed Description of the Invention

[0015] Those skilled in the art should understand that the following embodiments are only used to explain the technical principles of the embodiments of this application, and are not intended to limit the protection scope of the embodiments of this application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0016] In the description of the following embodiments, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific situations.

[0017] In the embodiments of this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0018] The following further elaborates on this application in detail with reference to the accompanying drawings and specific embodiments.

[0019] Please refer to Figure 1 , a voltage stabilizing structure provided by an embodiment of the present utility model includes a voltage stabilizing valve body 1. The voltage stabilizing valve body 1 is provided with an air inlet hole 11 at the front end, an air outlet hole 12 at the rear end, and a voltage stabilizing cavity 13 communicating the air inlet hole 11 and the air outlet hole 12. A voltage stabilizing valve core 2 that can move in the front-rear direction and a voltage stabilizing spring 3 for applying a backward thrust to the voltage stabilizing valve core 2 are provided in the voltage stabilizing cavity 13. A plug 21 corresponding to the air inlet hole 11 is provided at the front end of the voltage stabilizing valve core 2. A diversion hole 22 is provided on the side peripheral wall at the front end of the voltage stabilizing valve core 2. A flow hole 23 extending forward and communicating with the diversion hole 22 is provided at the rear end of the voltage stabilizing valve core 2. The side peripheral wall in the middle of the voltage stabilizing valve core 2 is relatively sealed with the side peripheral wall at the front part of the voltage stabilizing cavity 13. A stepped hole 24 with an enlarged aperture is provided at the rear end of the flow hole 23, and the aperture of the stepped hole 24 is larger than the outer diameter of the front end of the voltage stabilizing valve core 2.

[0020] In the above solution, a pressure stabilizing valve core 2 that can move in the front-rear direction and a pressure stabilizing spring 3 for applying a backward thrust to the pressure stabilizing valve core 2 are designed in the pressure stabilizing cavity 13. In the initial state, the pressure stabilizing spring 3 pushes the pressure stabilizing valve core 2 backward so that the plug 21 is separated from the air inlet hole 11. The gas flowing into the front part of the pressure reducing cavity from the air inlet hole 11 will enter the flow-through hole 23 from the diversion hole 22 and flow to the air outlet hole 12 at the rear part of the pressure reducing cavity. The air outlet hole 12 is connected to the user's usage end. Since a stepped hole 24 with an enlarged aperture is provided at the rear end of the flow-through hole 23, and the aperture of the stepped hole 24 is larger than the outer diameter of the front end of the pressure stabilizing valve core 2, as the gas continuously enters the flow-through hole 23, the forward gas thrust received by the pressure stabilizing valve core 2 will be greater than the backward gas thrust. The pressure stabilizing valve core 2 will gradually move forward, and the pressure stabilizing spring 3 will be compressed until the forward gas thrust received by the pressure stabilizing valve core 2 is equal to the backward gas thrust plus the elastic force of the pressure stabilizing spring 3, at which point the pressure stabilizing valve core 2 reaches a balanced state. Subsequently, even if the air pressure at the air inlet hole 11 fluctuates, the pressure stabilizing spring 3 will immediately adjust the pressure stabilizing valve core 2, that is, offset the air pressure fluctuation at the air inlet hole 11 through the elastic force of the pressure stabilizing spring 3, ensuring the stability of the air pressure output at the air outlet hole 12.

[0021] In this embodiment, a receiving groove 131 is circumferentially provided on the side peripheral wall at the rear part of the pressure stabilizing cavity 13. A stepped boss 25 is circumferentially provided on the side peripheral wall at the rear end of the pressure stabilizing valve core 2. The pressure stabilizing spring 3 is located in the receiving groove 131. The front end of the pressure stabilizing spring 3 abuts against the front side wall of the receiving groove 131 and the rear end abuts against the stepped boss 25, so that the structure is compact, and the pressure stabilizing spring 3 can stably apply a backward thrust to the pressure stabilizing valve core 2.

[0022] As an improvement to this embodiment, a ring boss 132 surrounding the air inlet hole 11 is provided on the front side wall of the pressure stabilizing cavity 13. The outer diameter of the ring boss 132 gradually decreases from front to back. Thus, when the pressure stabilizing valve core 2 moves forward, the plug 21 will abut against the ring boss 132 to close the air inlet hole 11.

[0023] The diversion holes 22 are even in number and are circumferentially distributed at equal intervals on the side peripheral wall at the front end of the pressure stabilizing valve core 2. In this embodiment, there are two diversion holes 22, so as to ensure that the air flow at the front part of the pressure stabilizing cavity 13 can more evenly flow into the flow-through hole 23 through the diversion holes 22.

[0024] As an extension of the above embodiments, it further includes an intake valve body 4. The intake valve body 4 is provided with an intake valve cavity 41, an inlet 42 and an outlet 43 both communicating with the intake valve cavity 41. The intake valve cavity 41 is provided with a movable and adjustable intake valve stem 5, and the intake valve stem 5 is used to control the on-off between the inlet 42 and the outlet 43. The front end of the pressure stabilizing valve body 1 is butted against the outlet 43 of the intake valve body 4. Thus, by adjusting the intake valve stem 5, it can be controlled whether the intake hole 11 at the front end of the pressure stabilizing valve body 1 intakes air, and the operation is simple and convenient. The control of the on-off between the inlet 42 and the outlet 43 by the intake valve stem 5 belongs to the prior art. For example, the intake valve stem 5 is screwed into the intake valve cavity 41. By rotating the intake valve stem 5, the intake valve stem 5 can move and adjust relative to the intake valve cavity 41. When the intake valve stem 5 moves between the inlet 42 and the outlet 43 of the intake valve body 4, it realizes blocking. When the intake valve stem 5 moves out of the space between the inlet 42 and the outlet 43 of the intake valve body 4, it realizes conduction.

[0025] More specifically, the outlet 43 of the intake valve body 4 is provided with internal threads, and the front end of the pressure stabilizing valve body 1 is provided with external threads. The front end of the pressure stabilizing valve body 1 is screwed to the outlet 43 of the intake valve body 4, so as to ensure the convenient assembly between the intake valve body 4 and the pressure stabilizing valve body 1. Of course, the outlet 43 of the intake valve body 4 and the front end of the pressure stabilizing valve body 1 can also be assembled in other ways in the prior art, such as interference fit, etc. The present design does not limit this.

[0026] Furthermore, a sealing ring 6 is provided between the front end of the pressure stabilizing valve body 1 and the outlet 43 of the intake valve body 4, so as to improve the airtightness between the front end of the pressure stabilizing valve body 1 and the outlet 43 of the intake valve body 4.

[0027] It should be noted that in the description of the present application, the terms "inner", "outer" and other terms indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then the directional indication also changes accordingly.

[0028] In the description of the present application, the descriptions referring to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific example", or "some examples", etc. mean that the specific features, mechanisms, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0029] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A voltage stabilizing structure, characterized in that: The invention comprises a pressure-stabilizing valve body (1), wherein the pressure-stabilizing valve body (1) is provided with an air inlet (11) at the front end, an air outlet (12) at the rear end, and a pressure-stabilizing chamber (13) communicating with the air inlet (11) and the air outlet (12), wherein the pressure-stabilizing chamber (13) is provided with a pressure-stabilizing valve core (2) movable in the front-rear direction and a pressure-stabilizing spring (3) for applying a backward thrust to the pressure-stabilizing valve core (2), and a plug (21) corresponding to the air inlet (11) is provided at the front end of the pressure-stabilizing valve core (2). ), the side circumferential wall at the front end of the pressure-stabilizing valve core (2) is provided with a flow guide hole (22), the rear end of the pressure-stabilizing valve core (2) is provided with a flow hole (23) extending forward and connected to the flow guide hole (22), the side circumferential wall of the middle part of the pressure-stabilizing valve core (2) is relatively sealed with the side circumferential wall of the front part of the pressure-stabilizing chamber (13), the rear end of the flow hole (23) is provided with a stepped hole (24) with an enlarged aperture, and the aperture of the stepped hole (24) is larger than the outer diameter of the front end of the pressure-stabilizing valve core (2).

2. The voltage stabilizing structure according to claim 1, characterized in that: The side circumferential wall at the rear of the pressure-stabilizing chamber (13) is provided with a receiving groove (131) along the circumferential direction, and the side circumferential wall at the rear end of the pressure-stabilizing valve core (2) is provided with a stepped boss (25) along the circumferential direction. The pressure-stabilizing spring (3) is located in the receiving groove (131), and the front end of the pressure-stabilizing spring (3) abuts against the front side groove wall of the receiving groove (131) and the rear end abuts against the stepped boss (25).

3. The voltage stabilizing structure according to claim 1, characterized in that: The front side wall of the pressure stabilizing chamber (13) is provided with an annular boss (132) surrounding the air inlet hole (11), and the outer diameter of the annular boss (132) gradually decreases from front to back.

4. The voltage stabilizing structure according to claim 1, characterized in that: The flow guide holes (22) are an even number and are evenly spaced and distributed along the circumferential direction on the side circumferential wall of the front end of the pressure-stabilizing valve core (2).

5. The voltage stabilizing structure according to any one of claims 1 to 4, characterized in that: The invention also comprises an intake valve body (4), wherein the intake valve body (4) is provided with an intake valve cavity (41) and an inlet (42) and an outlet (43) both connected to the intake valve cavity (41), the intake valve cavity (41) is provided with a movable and adjustable intake valve stem (5), and the intake valve stem (5) is used to control the connection and disconnection between the inlet (42) and the outlet (43), and the front end of the pressure-stabilizing valve body (1) is connected to the outlet (43) of the intake valve body (4).

6. The voltage stabilizing structure according to claim 5, characterized in that: The outlet (43) of the intake valve body (4) is provided with an internal thread, the front end of the pressure-stabilizing valve body (1) is provided with an external thread, and the front end of the pressure-stabilizing valve body (1) is threadedly connected to the outlet (43) of the intake valve body (4).

7. The voltage stabilizing structure according to claim 5, characterized in that: A sealing ring (6) is provided between the front end of the pressure-stabilizing valve body (1) and the outlet (43) of the air intake valve body (4).

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