Pressure change warning solenoid valve

Abstract

The utility model discloses a pressure change warning electromagnetic valve, including the base with the air inlet channel, the exhaust flow channel and the working channel, set up on the base for controlling the pressure of main valve body in the working channel and set up above the working channel and with the warning device of working channel connection. Warning device includes the warning cavity with visible window, set up in the warning cavity for sending warning sound's warning pipeline and set up in the warning cavity and can rise or drop with the air pressure change of air inlet channel and correspondingly warning assembly. The utility model discloses a pressure change warning electromagnetic valve can make visual warning and sound warning in time through the mechanical mechanism of not being interfered with electromagnetism when electromagnetic valve pressure is abnormal.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a pressure-transformer warning solenoid valve. Background Technology

[0002] A solenoid valve is a device that controls the flow of fluid using electromagnetic force, and it is widely used in various industrial, agricultural, medical, and scientific research fields. Solenoid valves primarily control the flow direction of fluid by varying the position of the valve core, thereby achieving precise control of actuators, such as the extension and retraction of cylinders. However, when the primary pressure suddenly increases or decreases, incomplete identification of danger signals can easily lead to damage or malfunction of the actuator, causing accidents.

[0003] Conventional solenoid valves can change the flow rate and direction of fluids, but they generally lack pressure warning functionality. When there are pressure range requirements on the actuator side, the solenoid valve needs to work with pressure switches, pressure gauges, etc., to achieve pressure detection and warning functions. However, if electrical signals are used to detect and warn of fluid pressure, there is a risk of signal failure, resulting in inaccurate pressure gauge readings. Furthermore, it requires a significant amount of installation space to accommodate pressure gauges and pressure switches. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a pressure-sensitive warning solenoid valve. By setting a warning device in the solenoid valve that can detect the pressure of the working flow channel, it issues corresponding visual and audible warning signals when the pressure in the working flow channel is abnormal, thereby timely reminding relevant personnel.

[0005] This utility model provides a pressure transformer warning solenoid valve, including a base having an inlet flow channel, an exhaust flow channel and a working flow channel, a main valve body disposed on the base for controlling the pressure in the working flow channel, and a warning device disposed above the working flow channel and connected to the working flow channel;

[0006] The warning device includes a warning cavity with a viewing window, a warning pipe disposed in the warning cavity for emitting a warning sound, and a warning component disposed in the warning cavity and capable of rising or falling accordingly with changes in air pressure in the air intake channel.

[0007] In one of the alternative technical solutions, the base is provided with a vertical branch channel communicating with the working flow channel, and the warning component is at least partially embedded in the branch channel.

[0008] In one of the alternative technical solutions, the warning component includes a warning post, the lower end of which is provided with a lower piston portion for blocking the branch channel, and the side of the warning post facing the viewing window is provided with several warning areas from bottom to top.

[0009] In one of the alternative technical solutions, each of the warning areas is set to a different color.

[0010] In one of the alternative technical solutions, a sealing ring is provided between the outer periphery of the lower piston and the inner wall of the branch channel.

[0011] In one of the alternative technical solutions, the warning assembly further includes a reset member disposed between the warning cavity and the lower piston portion.

[0012] In one of the alternative technical solutions, the warning conduit includes an air inlet pipe with an air inlet end, a receiving cavity connected to the air inlet pipe and used to accommodate the upper part of the warning column, and an exhaust pipe with an exhaust end connected to the receiving cavity. The air inlet end of the air inlet pipe is connected to the working flow channel. When the working flow channel is under abnormal pressure, airflow is conducted between the air inlet end and the exhaust end to emit a warning sound.

[0013] In one of the alternative technical solutions, the upper end of the warning column is provided with an upper piston part that matches the accommodating cavity, and the upper piston part blocks the connection between the air inlet pipe and the accommodating cavity when the working flow channel is under normal pressure.

[0014] In one of the alternative technical solutions, the exhaust pipe includes a high-pressure branch and a low-pressure branch respectively connected to the accommodating cavity. The connection point of the high-pressure branch to the accommodating cavity is located below the connection point of the intake pipe to the accommodating cavity, and the connection point of the low-pressure branch to the accommodating cavity is located above the connection point of the intake pipe to the accommodating cavity.

[0015] In one of the alternative technical solutions, steel balls for sealing are respectively provided between the air intake pipe, the high-pressure branch, the low-pressure branch and the inner surface of the warning cavity.

[0016] The above technical solution has the following beneficial effects:

[0017] The pressure-sensitive warning solenoid valve provided by this utility model has an alarm device in the solenoid valve that can detect the pressure of the working flow channel. The alarm device has an alarm component that can rise or fall according to the change of air pressure in the working flow channel. The rise or fall of the alarm component changes the visible content of the viewing window and changes the air passage state of the alarm pipe inside the alarm device to emit an alarm sound. When the pressure in the working flow channel is abnormal, it emits corresponding visual and audible warning signals, thereby timely reminding relevant personnel. Attached Figure Description

[0018] The disclosure of this utility model will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0019] Figure 1 A perspective view of a voltage transformer warning solenoid valve provided in an embodiment of this utility model;

[0020] Figure 2 A partial cross-sectional view of a voltage transformer warning solenoid valve provided in an embodiment of this utility model;

[0021] Figure 3 This is a partial enlarged view of region A provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the warning cavity provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a warning post provided in an embodiment of the present invention;

[0024] Figure 6 A cross-sectional view of the normal pressure state of the pressure transformer warning solenoid valve provided in an embodiment of this utility model;

[0025] Figure 7 A cross-sectional view of the overpressure state of the pressure transformer warning solenoid valve provided in an embodiment of this utility model;

[0026] Figure 8 This is a cross-sectional view of the low-pressure state of the pressure transformer warning solenoid valve provided in an embodiment of the present invention.

[0027] Figure reference numerals:

[0028] 1. Base; 11. Inlet air passage; 12. Exhaust air passage; 13. Working air passage; 14. Branch channel; 15. Thin tube;

[0029] 2. Main valve body;

[0030] 3. Warning device; 31. Warning chamber; 311. Viewing window; 32. Warning pipe; 321. Air inlet pipe; 322. Receptacle; 323. Exhaust pipe; 324. High-pressure branch; 325. Low-pressure branch; 326. Steel ball;

[0031] 4. Warning components; 41. Warning post; 411. Upper piston; 412. Lower piston; 413. Warning area; 42. Reset component; 43. Sealing ring; 44. Sealing baffle. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0033] In this utility model, unless otherwise explicitly specified and limited, the term "fixed" and similar terms should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] like Figures 1-5 As shown, an embodiment of the present invention provides a pressure transformer warning solenoid valve, including a base 1 having an inlet flow channel 11, an exhaust flow channel 12 and a working flow channel 13, a main valve body 2 disposed on the base 1 for controlling the pressure in the working flow channel 13, and a warning device 3 disposed above the working flow channel 13 and connected to the working flow channel 13.

[0035] The warning device 3 includes a warning cavity 31 with a viewing window 311, a warning pipe 32 disposed in the warning cavity 31 for emitting a warning sound, and a warning component 4 disposed in the warning cavity 31 and capable of rising or falling accordingly with changes in air pressure in the air intake channel.

[0036] Gas enters through the inlet channel 11 of the base 1, the main valve body 2 controls the amount of gas entering the working channel 13, and the gas that does not enter the working channel 13 is discharged through the exhaust channel 12. The main valve body 2 is equipped with a solenoid valve reversing core to adjust the gas flow rate entering the working channel 13.

[0037] The warning component 4 includes structures such as a warning column 41 that can rise or fall relative to the warning cavity 31. The height change of the warning column 41 is observed through the viewing window 311 to determine the air pressure state in the working flow channel 13. The magnitude of the air pressure in the working flow channel 13 is then judged by observing the position change of the warning component 4, and a comprehensive air pressure judgment is made in combination with the warning sound. Since the air pressure flowing through the warning pipe 32 is different in the high-pressure state and the low-pressure state of the working flow channel 13, the sound emitted is also different, thus allowing for differentiation.

[0038] The structure of the warning pipe 32 can be designed to change the airflow direction. For example, when the working channel 13 is under high pressure, the gas in the warning pipe 32 flows forward; when the working channel 13 is under low pressure, the gas in the warning pipe 32 flows backward, and the corresponding warning sound is generated by the sound-emitting structure set in the warning pipe 32. For example, a reed can be set in the warning pipe 32 with the opening direction consistent. Two different sounds are emitted when the airflow direction in the warning pipe 32 is forward and reverse. When the pressure in the working channel 13 is normal, no airflow passes through the warning pipe 32, and the reed does not emit a sound. Other types of sound-emitting structures can also be set as needed. Furthermore, the shape and size of each channel can be optimized to achieve more precise airflow control and a more sensitive warning response.

[0039] To improve the sealing effect between the base 1 and the warning device 3 and prevent air leakage, a sealing baffle can be installed between the lower end face of the warning device 3 and the upper surface of the base 1 to ensure that the gap between the warning device 3 and the base 1 is reliably sealed, thus avoiding any negative impact on the performance of the solenoid valve due to the addition of the warning device 3.

[0040] In summary, the pressure-sensitive alarm solenoid valve provided by this utility model incorporates an alarm device 3 capable of detecting the pressure in the working flow channel 13. The alarm device 3 includes an alarm component 4 that rises or falls according to changes in air pressure within the working flow channel 13. The alarm principle involves raising or lowering the alarm component 4 to alter the visible content of the viewing window 311, and also changing the airflow state of the alarm pipe 32 inside the alarm device 3 to emit an alarm sound. When the pressure in the working flow channel 13 is abnormal, corresponding visual and audible warning signals are emitted, thus promptly alerting relevant personnel.

[0041] In one embodiment, the base 1 is provided with a vertical branch channel 14 communicating with the working flow channel 13, and the warning component 4 is at least partially embedded in the branch channel 14.

[0042] In this embodiment, by setting the branch channel 14 of the value, the warning component 4 can achieve a lifting and lowering movement with less interference in the vertical space, thereby ensuring that the correlation between the moving distance of the warning component 4 and the change of air pressure is more accurate.

[0043] In one embodiment, the warning component 4 includes a warning post 41, the lower end of which is provided with a lower piston portion 412 for blocking the branch channel 14, and the side of the warning post 41 facing the viewing window 311 is provided with a plurality of warning areas 413 from bottom to top.

[0044] Furthermore, each warning area 413 can be set to a different color. As needed, different numbers, patterns or signs can also be set on each warning area 413 so that the height of the warning post 41 can be intuitively displayed on the viewing window 311.

[0045] Furthermore, the warning assembly 4 also includes a reset member 42, which is disposed between the warning cavity 31 and the lower piston portion 412. A sealing ring 43 is provided between the outer periphery of the lower piston portion 412 and the inner wall of the branch channel 14.

[0046] In this embodiment, a groove can be provided at the lower end of the warning column 41 to make the movement of the warning column 41 driven by the gas pressure in the working channel 13 more significant, and to make the rise or fall of the warning column 41 more precise. Preferably, the reset member 42 is a spring, with the upper end of the spring connected to the sealing baffle and the lower end of the spring connected to the lower piston part 412. When the gas pressure in the working channel 13 is too high or too low, it drives the warning column 41 to rise or fall, changing the warning area 413 aligned with the viewing window 311, causing the display of the viewing window 311 to change to remind the user. At this time, the spring will also be relatively stretched or compressed. After the gas pressure in the working channel 13 returns to normal, the spring resets and drives the lower piston part 412 to reset, so that the display in the viewing window 311 returns to normal. By setting the warning column 41, the changes in gas pressure in the working channel 13 can be accurately reflected with a purely mechanical structure, and it will not be affected by electromagnetic interference from the solenoid valve.

[0047] In one embodiment, the warning conduit 32 includes an air inlet pipe 321 with an air inlet end, a receiving cavity 322 connected to the air inlet pipe 321 and used to receive the upper part of the warning column 41, and an exhaust pipe 323 connected to the receiving cavity 322 with an exhaust end. The air inlet end of the air inlet pipe 321 is connected to the working flow channel 13. When the working flow channel 13 is under abnormal pressure, the air inlet end and the exhaust end are connected to emit a warning sound.

[0048] A thin tube 15, which is not connected to the branch channel 14, is also provided in the base 1. The air inlet end of the air inlet pipe 321 is connected to the working flow channel 13 through the thin tube 15, so that the gas flow in the branch channel 14 does not interfere with the gas flow in the thin tube 15. Of course, the names such as air inlet end and air inlet pipe 321 are only used as convenient terms and do not restrict the airflow direction. When the air pressure in the working flow channel 13 is lower than the external air pressure, the air inlet pipe 321 and the air inlet end can also be used as the outlet end, and the exhaust end and exhaust pipe 323 can also be used as the inlet end for external gas.

[0049] In one embodiment, the upper end of the warning post 41 is provided with an upper piston portion 411 that matches the accommodating cavity 322. The upper piston portion 411 seals the connection between the intake pipe 321 and the accommodating cavity 322 when the working flow channel 13 is under normal pressure. Further, the exhaust pipe 323 includes a high-pressure branch 324 and a low-pressure branch 325 respectively connected to the accommodating cavity 322. The connection between the high-pressure branch 324 and the accommodating cavity 322 is located below the connection between the intake pipe 321 and the accommodating cavity 322, and the connection between the low-pressure branch 325 and the accommodating cavity 322 is located above the connection between the intake pipe 321 and the accommodating cavity 322. Further, steel balls 326 for sealing are respectively provided between the intake pipe 321, the high-pressure branch 324, and the low-pressure branch 325 and the inner surface of the warning cavity 31.

[0050] The size of the exhaust pipe 323 can be adjusted to change the airflow at the exhaust end according to actual needs, thereby changing the volume of the warning sound.

[0051] Based on the required safety pressure range of the actuator in the pneumatic control system, a spring with a suitable compression amount is selected as the reset element 42. Since the spring compression amount is proportional to the compression force, when the pressure in the working flow channel 13 enters the groove at the lower end of the warning post 41, because the area of ​​the groove is fixed, the pressure on the lower end of the warning post 41 can cause the spring to obtain different compression forces depending on the state of the working flow channel 13. Due to the different spring compression amounts, the extension length of the warning post 41 is also different, which drives the upper piston part 411 at the upper end of the warning post 41 to move. The relative position of the upper piston part 411 in the warning cavity 31 changes, and different colors can be observed through the viewing window 311 to determine the air pressure status of the working flow channel 13.

[0052] The working flow channel 13 is in its initial state. At this time, there is no air pressure in the working flow channel 13, the reset component 42 is in its natural state, the warning column 41 does not extend and is completely located at the lower end of the receiving cavity 322, and the viewing window 311 is not visible in any color.

[0053] like Figure 6 The diagram shows the working flow channel 13 under normal pressure. At this pressure, the air pressure in the working flow channel 13 is within the safe pressure range. The warning column 41 extends, and the upper piston 411 seals the connection between the air inlet pipe 321 and the receiving cavity 322. At this time, no gas flows through the warning pipe 32 in the warning device 3, and no warning sound is emitted. When the working flow channel 13 is under normal pressure, the viewing window 311 is aligned with the green warning area 413 representing safety on the side of the warning column 41.

[0054] like Figure 7The diagram shows the high-pressure state of the working flow channel 13. At this time, the air pressure in the working flow channel 13 is higher than the safe pressure range. The warning column 41 extends further upwards, and the upper piston part 411 seals the connection between the receiving cavity 322 and the low-pressure branch 325. At this time, the gas in the warning pipe 32 flows from the inlet pipe 321 to the high-pressure branch 324. High-pressure gas flows through the warning pipe 32, actuating the reed and other sound-generating structures within it. Gas flows out from the exhaust end of the exhaust pipe 323, emitting a corresponding warning sound. When the working flow channel 13 is under high pressure, the viewing window 311 is aligned with the red warning area 413 representing danger on the side of the warning column 41.

[0055] like Figure 8 The diagram shows the low-pressure state of the working flow channel 13. At this time, the air pressure in the working flow channel 13 is below the safe pressure range. The warning column 41 moves downwards, causing the upper piston 411 to seal the connection between the accommodating cavity 322 and the high-pressure branch 324. At this time, the gas in the warning pipe 32 flows from the inlet pipe 321 to the low-pressure branch 325. Low-pressure gas flows through the warning pipe 32, actuating the reed and other sound-generating structures within it. Gas flows out from the exhaust end of the exhaust pipe 323, emitting a corresponding warning sound. When the working flow channel 13 is in a low-pressure state, the upper piston 411 is not visible through the viewing window 311.

[0056] Because the air pressure flowing through the warning pipe 32 is different under high pressure and low pressure conditions in the working flow channel 13, the warning sound emitted by the warning flow channel is also different, which can be easily distinguished by the operator.

[0057] In the pressure-sensitive warning solenoid valve provided by this invention, the warning function of the warning device 3 is independent of the electrical signal and will not fail due to the influence of the solenoid valve's electrical signal. Furthermore, the warning component 4 can provide a combination of color and sound warning information, offering operators an intuitive warning of abnormal pressure, enabling them to quickly identify abnormal conditions in the working flow channel and take timely measures. This invention adds a pressure warning function, reducing damage or malfunction of actuators caused by sudden pressure changes, thereby lowering the risk of accidents. Moreover, it eliminates the need for additional components in the solenoid valve, simplifying the installation process, reducing installation space requirements, and improving the overall integrity and reliability of the solenoid valve.

[0058] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0059] The above are merely the principles and preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of this utility model, and these modifications should also be considered within the scope of protection of this utility model.

Claims

1. A voltage-transformer warning solenoid valve, characterized in that, It includes a base (1) having an inlet flow channel (11), an exhaust flow channel (12) and a working flow channel (13), a main valve body (2) disposed on the base (1) for controlling the pressure in the working flow channel (13), and a warning device (3) disposed above the working flow channel (13) and connected to the working flow channel (13); The warning device (3) includes a warning cavity (31) with a viewing window (311), a warning pipe (32) disposed in the warning cavity (31) for emitting a warning sound, and a warning component (4) disposed in the warning cavity (31) and capable of rising or falling accordingly with the air pressure change of the air intake channel.

2. The voltage transformer warning solenoid valve according to claim 1, characterized in that, The base (1) is provided with a vertical branch channel (14) that communicates with the working flow channel (13), and the warning component (4) is at least partially embedded in the branch channel (14).

3. The voltage transformer warning solenoid valve according to claim 2, characterized in that, The warning component (4) includes a warning post (41), the lower end of which is provided with a lower piston part (412) for blocking the branch channel (14), and the side of the warning post (41) facing the viewing window (311) is provided with a number of warning areas (413) from bottom to top.

4. The voltage transformer warning solenoid valve according to claim 3, characterized in that, Each of the warning areas (413) is set to a different color.

5. The voltage transformer warning solenoid valve according to claim 3, characterized in that, A sealing ring (43) is provided between the outer periphery of the lower piston part (412) and the inner wall of the branch channel (14).

6. The voltage transformer warning solenoid valve according to claim 3, characterized in that, The warning assembly (4) also includes a reset member (42), which is disposed between the warning cavity (31) and the lower piston portion (412).

7. The voltage transformer warning solenoid valve according to claim 3, characterized in that, The warning conduit (32) includes an air inlet pipe (321) with an air inlet end, a receiving cavity (322) connected to the air inlet pipe (321) and used to receive the upper part of the warning column (41), and an exhaust pipe (323) connected to the receiving cavity (322) with an exhaust end. The air inlet end of the air inlet pipe (321) is connected to the working flow channel (13). When the working flow channel (13) is under abnormal pressure, the air inlet end and the exhaust end are connected to generate a warning sound.

8. The voltage transformer warning solenoid valve according to claim 7, characterized in that, The upper end of the warning column (41) is provided with an upper piston part (411) that matches the accommodating cavity (322). The upper piston part (411) blocks the connection between the air inlet pipe (321) and the accommodating cavity (322) when the working flow channel (13) is under normal pressure.

9. The voltage transformer warning solenoid valve according to claim 8, characterized in that, The exhaust pipe (323) includes a high-pressure branch (324) and a low-pressure branch (325) respectively connected to the accommodating cavity (322). The connection between the high-pressure branch (324) and the accommodating cavity (322) is located below the connection between the intake pipe (321) and the accommodating cavity (322), and the connection between the low-pressure branch (325) and the accommodating cavity (322) is located above the connection between the intake pipe (321) and the accommodating cavity (322).

10. The voltage transformer warning solenoid valve according to claim 9, characterized in that, Steel balls (326) for sealing are respectively provided between the air intake pipe (321), the high-pressure branch (324) and the low-pressure branch (325) and the inner side of the warning cavity (31).

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