Air leakage mute valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses an air leakage mute valve, which comprises a fixing frame, an electromagnetic valve, an air tap A and an air tap B. The electromagnetic valve is fixed in the fixing frame, the air tap A and the air tap B are respectively fixed at two ends of the electromagnetic valve, the air tap A is provided with an air passage A and an air passage B, and the air passage A and the air passage B are communicated with each other through an inner cavity of the electromagnetic valve. The air tap B is provided with an air channel C, the air channel C is communicated with an inner cavity of the electromagnetic valve, the air channel B or the air channel C is closed through the electromagnetic valve, and two air flow speed reduction blocks are fixed in the air channel B. The beneficial effects of the utility model are that: when the solenoid valve closes the air channel C, the air enters from the air channel A and is discharged outwards through the air channel B, and when the unloaded air passes through the deceleration channel, the air in the deceleration channel is subjected to convection collision, thereby reducing the flow rate, changing the frequency of the air sound, and reducing the noise generated when the air is discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to an air-deflation silent valve. Background Art

[0002] A valve is a device used to control the direction, pressure or flow of a fluid in a fluid system. It enables the medium (liquid, gas or powder) in piping and equipment to flow or stop and control its flow. A solenoid valve is one of the valves. The solenoid valve can be used with different circuits to achieve the desired control, and the accuracy and sensitivity of the control can be guaranteed. Therefore, it is widely used in equipment. With the rapid development of the domestic economy and national defense industry, as one of the gas circuit control components, the application of gas control valves is becoming more and more extensive. It is responsible for the intake and discharge of gas. The working principle of the solenoid valve is to control the up and down movement of the valve core through the electromagnetic force generated by the electromagnetic coil after power is supplied to the valve, so that the valve is opened or closed, thereby controlling the on and off of the medium in the pipeline.

[0003] The Chinese utility model patent (authorization announcement number: CN216951783U name: a miniature three-way solenoid valve) includes a frame, a valve core and a sealing nozzle, a coil is arranged on the outside of the frame, a main pipeline, a first channel and a second channel are arranged inside the frame, the sealing nozzle is inserted into the lower end of the main pipeline from bottom to top, the valve core is arranged in the main pipeline, and the two ends of the valve core are respectively connected with a first stopper and a second stopper, a spring is arranged between the second stopper and the sealing nozzle, and the two ends of the spring are respectively in conflict with the second stopper and the sealing nozzle. The utility model sets a first stopper, and the first stopper covers the connection between the first channel and the main pipeline to prevent the phenomenon of offset leakage. When the external ventilation is performed, the second stopper is set to avoid the bottom of the valve core directly contacting the frame and the sealing nozzle, and the impact noise is generated during operation. At the same time, the spring supports the valve core so that the valve core does not shake, further reducing the noise, and achieving the effect of improving the resonance noise of the gas valve. However, when the gas is discharged, the airflow will impact the component, resulting in a large noise during operation. Utility Model Content

[0004] The utility model aims to provide a deflation silent valve to overcome the shortcomings of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: a deflation silent valve, comprising a fixing frame, a solenoid valve, an A air nozzle and a B air nozzle, wherein the solenoid valve is fixed in the fixing frame, the A air nozzle and the B air nozzle are respectively fixed at two ends of the solenoid valve, the A air nozzle is provided with an A airway and a B airway, the A airway and the B airway are connected to each other through the inner cavity of the solenoid valve, the B air nozzle is provided with a C airway, the C airway is connected to the inner cavity of the solenoid valve, the B airway is closed or the C airway is closed by the solenoid valve, the B airway is L-shaped, and the Two airflow deceleration blocks are fixed near the corner of the air intake section of the B air duct, and a deceleration channel is formed between the two airflow deceleration blocks. The deceleration channel is used to connect the air intake end and the air outlet end of the B air duct. An A block is fixed on the airflow deceleration block, and the A block is oblique to the air intake end of the B air duct. The A blocks are in pairs and distributed along the air intake direction of the deceleration channel. A B block is arranged between adjacent A blocks on the same side, and the B block is fixed in the B air duct and oblique to the air intake end of the deceleration channel. The B block extends to the root along the top of the inclined A block.

[0006] Preferably, the solenoid valve includes a tubular valve body, an iron column and a spring. The valve body is fixed in the fixing frame and one end of the valve body is inserted into the A air nozzle, and the B air nozzle is inserted into the other end of the valve body. A spiral coil is wound around the valve body, the iron column is slidably installed in the valve body, and the spring is compression installed between the B air nozzle and the iron column.

[0007] Preferably, rubber blocks are provided at both ends of the iron column, and the rubber blocks are used to absorb the impact force when closing the B airway or closing the C airway.

[0008] Preferably, the fixing frame is U-shaped, a cover plate is clamped at the opening of the fixing frame, the A gas nozzle is fixed to the cover plate by screws, a pair of limit platforms are provided on the outer wall of the valve body, the cover plate locks the valve body in the fixing frame through the limit platforms, and the B gas nozzle inserted into the valve body passes through the bottom of the fixing frame.

[0009] Preferably, an A rubber ring is sleeved on the outer wall of the valve body located in the A air nozzle, and the A rubber ring is compressed and installed in the A air nozzle, and a B rubber ring is sleeved on the B air nozzle located in the valve body, and the B rubber ring is compressed and installed in the valve body.

[0010] Preferably, an A limit step is provided on the B air nozzle located in the valve body, a B limit step is provided on the iron column, and both ends of the spring are respectively against the A limit step and the B limit step.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When the solenoid valve closes the C air channel, the gas enters from the A air channel and is discharged outward through the B air channel. When the unloaded gas passes through the deceleration channel, part of the air flow enters the detour channel formed by the A block and the B block. At this time, the unloaded gas is divided into the main air flow and the branch air flow. The branch air flow that enters the detour channel flows back to the end of the detour channel and collides with the main air flow in the deceleration channel, thereby reducing the flow rate and changing the frequency of the gas sound. The gas that has repeatedly reduced the flow rate and changed the frequency of the gas sound enters the front-shaped sintered body, further changing the flow rate and changing the frequency of the gas sound, thereby reducing the noise generated when the gas is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 3 It is a partial cross-sectional schematic diagram of the utility model

[0016] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0017] In the figure, 1-fixed frame, 2-A air nozzle, 3-B air nozzle, 4-A air channel, 5-B air channel, 6-C air channel, 7-air flow deceleration block, 8-A stopper, 9-B stopper, 10-sintered body, 11-valve body, 12-iron column, 13-spring, 14-rubber block, 15-cover plate, 16-limiting platform, 17-A rubber ring, 18-B rubber ring, 19-A limiting step, 20-B limiting step. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4As shown, a deflated silent valve comprises a fixing frame 1, a solenoid valve, an A air nozzle 2 and a B air nozzle 3, wherein the solenoid valve is fixed in the fixing frame 1, the A air nozzle 2 and the B air nozzle 3 are respectively fixed at two ends of the solenoid valve, the A air nozzle 2 is provided with an A air passage 4 and a B air passage 5, the A air passage 4 and the B air passage 5 are communicated with each other through the inner cavity of the solenoid valve, the B air nozzle 3 is provided with a C air passage 6, the C air passage 6 is communicated with the inner cavity of the solenoid valve, the B air passage 5 or the C air passage 6 is closed by the solenoid valve, when the solenoid valve loses power, the B air passage 5 is closed, and the gas flows out from the C air passage 6. The gas flows into the valve body 11 through the air channel 6, and then flows out from the A air channel 4 to the terminal product. When the solenoid valve is energized, the C air channel 6 is closed, and the gas flows from the terminal product through the A air channel 4 into the valve body 11, and then flows out from the B air channel 5. The B air channel 5 is L-shaped, and two air flow deceleration blocks 7 are fixed near the corner of the air inlet section of the B air channel 5. A deceleration channel is formed between the two air flow deceleration blocks 7. The deceleration channel is used to connect the air inlet end and the air outlet end of the B air channel 5. An A block 8 is fixed on the air flow deceleration block 7. The A block 8 is inclined to the air inlet end of the B air channel 5. The A block 8 is a plurality of pairs and is distributed along the air inlet direction of the deceleration channel. B blocks 9 are arranged between adjacent A blocks 8 on the same side. B blocks 9 are fixed in the B airway 5 and obliquely face the air inlet end of the deceleration channel. B blocks 9 extend toward the root along the top of the inclined A blocks 8. A honeycomb sintered body 10 is arranged in the air outlet section of the B airway 5. The socket of the sintered body 10 abuts against the air outlet end of the deceleration channel. When the solenoid valve closes the C airway 6, the gas enters from the A airway 4 and is discharged outward through the B airway 5. When the unloaded gas passes through the deceleration channel, at this time Part of the airflow enters the detour channel formed by the A block 8 and the B block 9. At this time, the unloaded gas is divided into the main airflow and the branch airflow. The branch airflow that enters the detour channel flows back to the end of the detour channel and collides with the main airflow in the deceleration channel, thereby reducing the flow rate and changing the frequency of the gas sound. The gas that has repeatedly reduced the flow rate and changed the frequency of the gas sound enters the front-shaped sintered body 10, further changing the flow rate and the frequency of the gas sound, thereby reducing the noise generated when the gas is discharged.

[0025] In this embodiment, if Figure 2 As shown, the solenoid valve includes a tubular valve body 11, an iron column 12 and a spring 13. The valve body 11 is fixed in a fixing frame 1 and one end thereof is inserted into the A air nozzle 2, and the B air nozzle 3 is inserted into the other end of the valve body 11. A spiral coil (not shown in the figure) is wound around the valve body 11. The iron column 12 is slidably installed in the valve body 11, and the spring 13 is compressed and installed between the B air nozzle 3 and the iron column 12. When the valve is energized, under the magnetic force of the coil, the iron column 12 overcomes the elastic force of the spring 13, moves downward, and is attracted to the B air nozzle 3. The iron column 12 supports the C airway 6 and blocks the port. At this time, the iron column 12 is away from the B airway 5, so that the A airway 4 and the B airway 5 are connected through the inner cavity of the valve body 11. The spring 13 supports the iron column 12 to prevent the iron column 12 from shaking, so as to avoid collision with surrounding components during shaking and generating noise.

[0026] In this embodiment, if Figure 2 As shown, rubber blocks 14 are provided at both ends of the iron column 12, and the rubber blocks 14 are used to absorb the impact force when closing the B air duct 5 or closing the C air duct 6. The rubber blocks 14 can be glued to the ends of the iron column 12 with glue, and a groove can also be opened on the end surface of the iron column 12, and the rubber blocks 14 are stuck in the groove. However, flanges are provided on the ports of the B air duct 5 and the C air duct 6, and the outer diameter of the flange needs to be smaller than the outer diameter of the rubber pad, so as to avoid the direct impact and contact between the iron column 12 and the B air duct 5 or the C air duct 6, thereby avoiding the impact noise generated during operation, and achieving the effect of improving the resonance noise of the valve.

[0027] In this embodiment, if Figure 1 and 2 As shown, the fixing frame 1 is U-shaped, and a cover plate 15 is clamped at the opening of the fixing frame 1. The clamping part of the fixing frame 1 and the cover plate 15 adopts interference fit. The A air nozzle 2 is fixed to the cover plate 15 by screws. A pair of limit platforms 16 are arranged on the outer wall of the valve body 11. The cover plate 15 locks the valve body 11 in the fixing frame 1 through the limit platforms 16. The diameter of the winding part of the valve body 11 is made small. Under the condition of unchanged volume, a thicker wire diameter and more turns can be wound, and a larger voltage can be provided. The magnetic force effectively improves the suction force of the valve body 11, and improves the sealing performance of the iron column 12 to the B air duct 5 or the C air duct 6 after power is turned on. At the same time, the B air nozzle 3 inserted into the valve body 11 passes through the bottom of the fixed frame 1. The B air nozzle 3 is columnar and is arranged in multiple sections. The diameter of the column on the B air nozzle 3 decreases from the middle to the two ends. The middle part of the B air nozzle 3 is stuck on the bottom of the fixed frame 1, which is convenient for disassembly, assembly and replacement of various components. The damaged components can be replaced in a targeted manner, reducing the maintenance cost.

[0028] In this embodiment, if Figure 2 As shown, an A rubber ring 17 is sleeved on the outer wall of the valve body 11 located in the A air nozzle 2, and the A rubber ring 17 is compressed and installed in the A air nozzle 2. A B rubber ring 18 is sleeved on the B air nozzle 3 located in the valve body 11, and the B rubber ring 18 is compressed and installed in the valve body 11. The A and B rubber rings 18 improve the sealing effect of the silent valve and avoid gas leakage from the A air nozzle 2 or the B air nozzle 3.

[0029] In this embodiment, if Figure 2 As shown, an A limit step 19 is provided on the B air nozzle 3 located in the valve body 11, and a B limit step 20 is provided on the iron column 12. Both ends of the spring 13 are respectively against the A limit step 19 and the B limit step 20, which prevents the spring 13 from being displaced during operation, and makes the iron column 12 always slide along the axial direction of the B air nozzle 3, so as to avoid the iron column 12 being skewed due to the displacement of the spring 13, thereby preventing the B air duct 5 or the C air duct 6 from being sealed tightly.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A deflation silent valve, comprising a fixing frame (1), a solenoid valve, an A air nozzle (2) and a B air nozzle (3), wherein the solenoid valve is fixed in the fixing frame (1), the A air nozzle (2) and the B air nozzle (3) are respectively fixed at two ends of the solenoid valve, the A air nozzle (2) is provided with an A air passage (4) and a B air passage (5), the A air passage (4) and the B air passage (5) are communicated with each other through an inner cavity of the solenoid valve, the B air nozzle (3) is provided with a C air passage (6), the C air passage (6) is communicated with the inner cavity of the solenoid valve, the B air passage (5) is closed or the C air passage (6) is closed through the solenoid valve, and the characteristics are: The B air duct (5) is L-shaped, and two airflow deceleration blocks (7) are fixed near the corner of the air inlet section of the B air duct (5), and a deceleration channel is formed between the two airflow deceleration blocks (7). The deceleration channel is used to connect the air inlet end and the air outlet end of the B air duct (5). An A block (8) is fixed on the airflow deceleration block (7), and the A block (8) is inclined toward the air inlet end of the B air duct (5). The A blocks (8) are in pairs and are distributed along the air inlet direction of the deceleration channel. A B block (9) is arranged between adjacent A blocks (8) on the same side, and the B block (9) is fixed in the B air duct (5) and is inclined toward the air inlet end of the deceleration channel. The B block (9) extends from the top of the inclined A block (8) to the root.

2. The deflation silent valve according to claim 1, characterized in that: The solenoid valve comprises a tubular valve body (11), an iron column (12) and a spring (13); the valve body (11) is fixed in the fixing frame (1) and one end of the valve body (11) is inserted into the A air nozzle (2); the B air nozzle (3) is inserted into the other end of the valve body (11); a spiral coil is wound around the valve body (11); the iron column (12) is slidably installed in the valve body (11); and the spring (13) is compressed and installed between the B air nozzle (3) and the iron column (12).

3. The deflation silent valve according to claim 2, characterized in that: Rubber blocks (14) are provided at both ends of the iron column (12), and the rubber blocks (14) are used to absorb the impact force when closing the B airway (5) or closing the C airway (6).

4. The deflation silent valve according to claim 2, characterized in that: The fixing frame (1) is U-shaped, a cover plate (15) is clamped at the opening of the fixing frame (1), the A gas nozzle (2) is fixed to the cover plate (15) by screws, a pair of limit platforms (16) are arranged on the outer wall of the valve body (11), the cover plate (15) locks the valve body (11) in the fixing frame (1) through the limit platforms (16), and the B gas nozzle (3) inserted into the valve body (11) passes through the bottom of the fixing frame (1).

5. The deflation silent valve according to claim 2, characterized in that: An A rubber ring (17) is sleeved on the outer wall of the valve body (11) located in the A air nozzle (2), and the A rubber ring (17) is compressed and installed in the A air nozzle (2). A B rubber ring (18) is sleeved on the B air nozzle (3) located in the valve body (11), and the B rubber ring (18) is compressed and installed in the valve body (11).

6. The deflation silent valve according to claim 2, characterized in that: The B air nozzle (3) located in the valve body (11) is provided with an A limit step (19), the iron column (12) is provided with a B limit step (20), and the two ends of the spring (13) are respectively against the A limit step (19) and the B limit step (20).

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