A flow-adaptive gas timing valve

Abstract

This solution discloses a flow-adaptive gas timing valve in the field of safety valve technology, including a valve body with a cavity and inlet and outlet channels on both sides. A transmission mechanism is installed within the cavity. A flow-through assembly is configured in the inlet channel, consisting of a flow-through base, a transition assembly, and two valve cores. The flow-through base sequentially fixes a filter seat, a flow-through valve core seat, and a regulating valve core seat, each valve core seat having a flow-through hole and a sealing ring. The two valve cores include guide rods and sealing plates, respectively equipped with a flow-through spring and a second regulating spring. The transition assembly includes a transition sealing ring and a transition base with one open end, internally slidably connected to a transition baffle and supported by a transition spring. The transition baffle cooperates with the transition sealing ring to achieve precise control. This design utilizes springs with different elastic forces (flow-through spring > transition spring ≥ second regulating spring) to ensure that the assembly automatically adjusts to the appropriate position when the flow rate changes, improving the safety and adaptability of the gas valve.

Description

Technical Field

[0001] This invention belongs to the field of safety valve technology, and specifically relates to a flow-adaptive gas timing valve. Background Technology

[0002] In the field of gas safety, such as for natural gas and toxic gases, safety valves (such as timer valves, solenoid valves, and electric valves) play a crucial role when using flow-through components as accessories. When the flow rate increases to the maximum value of the flow-through design, or when the outlet pipe becomes detached, causing undervoltage, the flow-through component will automatically close the valve to ensure that no safety hazards are caused by overcurrent or undervoltage.

[0003] However, working conditions vary significantly across industries and regions, meaning the required flow thresholds for safety valves will also differ. Safety valves typically have fixed flow settings (i.e., fixed thresholds), which can lead to malfunctions in certain situations—the valve may incorrectly close even when the flow rate is within a safe and normal range, disrupting service and impacting production efficiency or daily life. The traditional solution is to replace the safety valve or its internal flow components, but this is not only costly but may also compromise the original airtightness of the piping system, requiring additional maintenance and inspection. Summary of the Invention

[0004] The present invention aims to provide a flow-adaptive gas timing valve to improve the versatility of gas timing valves.

[0005] This solution discloses a flow-adaptive gas timing valve, comprising a valve body with a cavity inside. An inlet channel and an outlet channel communicating with the cavity are respectively located on opposite sides of the valve body. A transmission mechanism for opening or closing the outlet channel is provided within the cavity. A flow-through assembly is provided within the inlet channel, comprising a flow-through base, a transition component, and two valve cores. A filter seat, a flow-through valve core seat, and a regulating valve core seat are sequentially fixedly connected within the flow-through base. Both the flow-through valve core seat and the regulating valve core seat have flow holes for gas passage. Each of the two valve cores is equipped with a flow-through sealing ring. Each valve core includes a guide rod and a sealing plate for sealing the flow-through sealing ring. The guide rod is fixedly connected to the center of the sealing plate. A second adjusting spring and a flow-through spring are respectively sleeved on the two guide rods. The two guide rods pass through the two flow-through sealing rings. One end of the flow-through spring and the second adjusting spring abuts against the two sealing plates, and the other end of the flow-through spring and the second adjusting spring abuts against the flow-through valve core seat and the adjusting valve core seat, respectively. The other end of the sealing plate abutting against the flow-through spring abuts against... The sealing plate, held on the filter seat and abutting against the second adjusting spring, abuts against the flow valve core seat at its other end. The transition assembly includes a transition sealing ring and a transition base with one open end. The open end of the transition base is fixedly connected to the end of the flow base away from the filter seat. Air outlets communicating with the opening are evenly distributed on the end of the transition base away from the opening. A transition baffle is slidably connected inside the transition base. A transition spring is held at the center of the transition baffle, and the other end of the transition spring abuts against the inner bottom wall of the transition base. The transition sealing ring is located on the adjusting valve core seat. Between the transition baffle and the transition seal ring, the transition sealing ring is fixedly connected to the end of the regulating valve core seat away from the overflow valve core seat. The end of the transition baffle away from the transition spring is in contact with the transition sealing ring. The transition baffle has through holes evenly distributed and communicating with the overflow holes. The contact portion between the regulating valve core seat and the transition sealing ring has air inlets evenly distributed. The air inlets are communicating with the gap between the regulating valve core seat and the overflow valve core seat. The transition sealing ring has vent holes evenly distributed. The vent holes are communicating with the air inlets. The elastic force of the overflow spring is greater than the elastic force of the transition spring and is greater than or equal to the elastic force of the second regulating spring.

[0006] The working principle and benefits of this solution are as follows: The spring force of the overcurrent spring > the spring force of the transition spring ≥ the spring force of the second adjusting spring. The spring force of the overcurrent spring is within the maximum allowable overcurrent value. Exceeding this value can be considered an abnormal value, which may lead to safety hazards. Therefore, the spring force of the overcurrent spring can be designed according to the maximum allowable value of the region. The overcurrent assembly, as an accessory of the gas timer valve, is installed in the gas inlet channel of the gas timer valve. In the initial state, the transition baffle blocks the gas passage hole on the transition sealing ring, so that after the gas flows into the filter seat, it can only pass through the overcurrent sealing ring in the overcurrent valve core seat and the adjusting valve core seat, then through the through hole on the transition baffle, and finally enter the cavity of the valve body through the gas outlet hole on the transition base. When the flow rate increases, the pressure generated by the airflow gradually increases to the elastic force of the second adjusting spring. The guide rod inside the regulating valve core seat and the sealing plate connected to it move towards the transition base until the sealing plate and the flow sealing ring inside the regulating valve core seat are tightly fitted, cutting off the airflow from this point into the cavity of the valve body. If the flow rate does not increase at this time, the flow assembly is in the closed valve state. Because the elastic force of the transition spring is close to that of the second adjusting spring, if the flow rate continues to increase (normal flow rate increase), the airflow enters through the air inlet, and then acts on the transition baffle through the air outlet on the transition sealing ring. The pressure generated by the airflow can open the transition baffle, causing the transition baffle to move towards the cavity of the valve body, thereby allowing the airflow to enter the cavity of the valve body through the through hole of the transition baffle, and the gas timer valve is in normal working condition. If the flow rate continues to increase, even exceeding the spring force of the overcurrent spring (as mentioned above, the spring force of the overcurrent spring is at the maximum allowable overcurrent value; if it exceeds the spring force of the overcurrent spring, it can be determined that the overcurrent is caused by a fault), then the guide rod connected to the overcurrent spring and the sealing plate are pressed towards the overcurrent sealing ring side until they fit tightly. The overcurrent assembly completely blocks the gas from entering the valve body, thus achieving overcurrent protection.

[0007] This solution, through the cooperation of the overflow spring, the second adjusting spring, and the transition spring, combined with the combined action of other components, ensures that the gas timer valve operates normally within the range of normal gas flow and pressure fluctuations. This prevents disruptions to normal user operation due to accidental closure and avoids numerous pipeline repairs and safety valve replacements caused by such malfunctions. Furthermore, because the overflow assembly achieves flow self-adaptation, the gas timer valve can be installed in a wider range of pipeline networks, greatly improving its versatility.

[0008] Furthermore, the flow base has an integrally formed annular boss, and the flow valve core seat and regulating valve core seat are respectively fixed on both sides of the boss; the connection between the regulating valve core seat and the flow valve core seat and the boss is provided with a first sealing ring and a fifth sealing ring, respectively; the outer edge of the flow valve core seat away from the filter seat has a constriction, and the fifth sealing ring is fitted onto the constriction. The boss makes the installation of the flow valve core seat and the regulating valve core seat more convenient, and the first and fifth sealing rings improve the sealing performance at the connection between the flow valve core seat and the boss; the constriction facilitates the quick connection and disconnection of the fifth sealing ring from the flow valve core seat, and together with the boss, it helps to better achieve the sealing performance at the connection between the flow valve core seat and the boss.

[0009] Furthermore, both the overflow valve core seat and the regulating valve core seat have guide tubes at their ends away from the filter seat. Two guide rods are slidably connected within the two guide tubes, which extend into the two overflow sealing rings. The ends of the overflow spring and the second regulating spring away from the sealing plate are respectively sleeved on the corresponding guide tubes. The two sealing plates are equidistant from the corresponding guide tubes. In the initial state, the end of the guide rod located in the overflow valve core seat away from the filter seat abuts against the sealing plate between the overflow valve core seat and the regulating valve core seat. The transition sealing ring has an annular groove on the side facing the transition baffle, and the vent is located in the groove. The transition baffle has an annular flange that mates with the groove. The guide tube helps improve the stability of the guide rod during movement. The overflow spring and the second adjusting spring are sleeved on the guide tube, which helps improve the stability of the overflow spring and the second adjusting spring during compression / recovery. The two sealing plates are equidistant from the corresponding guide tubes. When the airflow pressure reaches the elastic force of the overflow spring, the overflow spring is compressed. The two sealing plates respectively seal the two overflow sealing rings, resulting in a better sealing effect. The cooperation of the flange and the groove helps to improve the tightness of the contact between the transition sealing ring and the transition baffle.

[0010] Furthermore, the transition baffle includes a sleeve and an annular retaining ring. The retaining ring is slidably connected within the transition base. Connecting rods are evenly distributed on the outer wall of the sleeve. The end of the connecting rod away from the sleeve is fixedly connected to the inner wall of the retaining ring. The gap between the connecting rod, the sleeve, and the inner wall of the retaining ring forms the through hole. The sleeve is slidably fitted onto the guide tube of the regulating valve core seat. The retaining ring being slidably connected within the transition base and the sleeve being slidably fitted onto the guide tube of the regulating valve core seat provides dual constraint on the retaining ring from both the guide tube and the transition base, thereby improving the stability of the transition baffle's sliding motion.

[0011] Furthermore, the regulating valve core seat includes an annular regulating fixed seat and a regulating cylinder fixedly connected within the regulating fixed seat. The regulating cylinder and the regulating fixed seat are coaxial. The flow passage is located at the center of the regulating cylinder and passes through it. The air inlet is evenly distributed between the regulating cylinder and the regulating fixed seat. The flow sealing ring is fixedly connected within the regulating cylinder. The diameter of the flow passage is larger than the outer diameter of the sleeve, and the sleeve is coaxial with the regulating cylinder. One end of the guide tube is fixedly connected within the regulating cylinder. The transition sealing ring is sleeved on the regulating cylinder. The flange is located on the side of the retaining ring facing the transition sealing ring. In the initial state, the air inlet and the flow passage are connected. The flow passage is blocked by the retaining ring. The airflow enters the through hole through the flow passage in the regulating cylinder and then enters the safety valve through the air outlet of the transition base. When the pressure reaches the spring force of the second adjusting spring but is less than the spring force of the overflow spring, the sealing plate seals the overflow sealing ring inside the adjusting cylinder. The airflow enters the overflow hole from the inlet hole. When the airflow pressure reaches the spring force of the transition spring, the airflow pushes the retaining ring and the sleeve to move away from the filter seat, so that the airflow flows from the through hole to the outlet hole and then enters the safety valve.

[0012] Furthermore, the transmission mechanism includes a mounting cover and a rotating shaft. The bottom of the mounting cover has a downwardly protruding mounting block with a horizontal through hole. A push shaft is horizontally slidably connected within the through hole. The push shaft has two coaxial shoulders located on the same side of the mounting block. The mounting cover has a vertical connecting hole, and the rotating shaft is rotatably connected within the connecting hole. The top of the rotating shaft is fixedly connected to a valve cover. A mechanism for driving the valve cover to deflect is mounted on the top of the mounting cover. The bottom of the rotating shaft is fixedly connected to a valve cover. The valve cover has a U-shaped groove, and the push shaft is engaged within the U-shaped groove. The two shoulders are located on opposite sides of the U-shaped groove. A first adjusting spring is sleeved on the push shaft. One end of the first adjusting spring is fixedly connected to the mounting block, and the other end abuts against the adjacent shoulder. During operation, the coil spring on the mechanism releases its elasticity, causing the closing plate of the mechanism to deflect the upper valve cover to a certain extent. Since the upper and lower valve covers are fixedly connected to the two ends of the rotating shaft, the rotating shaft rotates, transmitting the rotational motion to the lower valve cover. With the cooperation of the first adjusting spring and the shaft shoulder, the push shaft moves towards the air inlet end of the valve body, causing the shaft shoulder away from the mounting block to disengage from the air outlet end of the valve body, thus opening the valve. After a preset time, the mechanism stops working, the closing plate disengages from the upper valve cover, and the push shaft returns to its initial position under the action of the first adjusting spring. This then causes the push shaft to move towards the air outlet end of the valve body. The shaft shoulder away from the mounting block seals the air outlet end of the valve body, closing the valve. Through the U-shaped groove engagement between the push shaft and the lower valve cover, and the limiting effect of the shaft shoulder, the accuracy and stability of power transmission are ensured, avoiding problems such as power failure or inaccurate output, loosening or detachment of connecting parts, thereby improving the overall reliability of the safety valve.

[0013] Furthermore, an L-shaped first baffle is integrally formed on the lower cover of the valve. The end of the first baffle away from the lower cover extends to the end of the push shaft away from the lower cover, and the end of the push shaft away from the lower cover abuts against the first baffle. During the process of the mechanism driving the rotating shaft to rotate, thereby causing the lower cover of the valve to deflect, the first baffle can quickly push the push shaft to move to one side of the rotating shaft, thus improving its responsiveness. In addition, the first adjusting spring cooperates with the first baffle, ensuring that the push shaft is always subjected to the combined action of the shaft shoulder and the first baffle, preventing the push shaft from loosening or falling off.

[0014] Furthermore, the cavity of the valve body is also equipped with an indicator dial, which includes a transparent cover and a base with a central hole. The upper surface of the base has a blind hole, and an opaque indicator plate is fixedly connected to the upper surface of the base. The indicator plate has a clearance hole, and the upper surface of the indicator plate is engraved with pointers, warnings, and operating instructions around the clearance hole. The outer wall of the indicator plate has a first notch extending to the clearance hole. A fixing rod extending downward is provided at the center of the transparent cover, and the fixing rod is rotatably connected to the central hole via the clearance hole. A transparent engraving is fixedly connected to the fixing rod. The dial is located inside the blind hole and below the indicator dial, with the dial 1.5–2.5 mm from the bottom of the blind hole. The dial has time markings and a coaxial arc-shaped clearance on it, which is coaxial with the fixed rod. The dial also has a cut that extends from one end of the clearance to the outer edge of the dial, with the free end of the cut located at the first notch. A protective cover is fitted onto the transparent cover. The movement includes a coil spring and a movement shaft for driving the fixed rod. The movement shaft is fixedly connected to the fixed rod, and the base is fixedly connected to the movement.

[0015] Currently, some timer valves rely on purely mechanical mechanisms to display the time status. These products primarily employ two time indication methods: one uses a traditional thin pointer and dial design, making time reading difficult when the pointer is thin and the dial content is complex; the other uses a red semi-transparent component instead of a pointer, which rotates out when the time needs to be indicated. However, this red component primarily relies on a small, protruding pointer to indicate the time, and while the large area of ​​red provides clear visibility, it can easily lead to confusion regarding accurate time indication. Although both time indication methods can achieve good time indication, when applied to specific fields, especially gas timer valves where operating instructions, warnings, and other textual information need to be displayed, the interface must show not only the scale but also the operating methods and warnings. This results in very small fonts and scales, making it difficult for users to quickly and accurately read the time. Users may also easily overlook important warnings, increasing the risk of misoperation and accidents. These problems are more pronounced when the user is at a certain distance from the dial, making the time display unclear and warnings inconspicuous, thus affecting the safe use of the product.

[0016] This design places multiple time scales separately on the main dial, while the pointer, warning messages, and operating instructions are placed on the indicator dial. This allows the pointer, warning messages, operating instructions, and time scales to be set larger for easy viewing. Before use, the base of the indicator dial is fixedly connected to the movement of the mechanical timer valve, and the fixing rod is connected to the movement shaft.

[0017] Initially, the dial is hidden beneath the indicator dial, making the warnings and operating instructions on the indicator dial clearly visible and providing better guidance for safe operation. When the indicator dial is in operation, rotating the transparent cover clockwise causes the dial to rotate, partially obscuring the indicator dial. As the dial rotates out, the time markings on the dial become visible, and the pointer indicates the current time. When the transparent cover is released, the spring in the movement releases its tension, and the movement, under the action of a specific mechanism, begins to rotate the dial and transparent cover in opposite directions. At this point, the indicator dial enters the timekeeping function (countdown).

[0018] In this design, the larger time markers on the dial are gradually covered by an opaque sub-dial throughout the countdown, with fewer and fewer markers displayed, truly embodying the concept of a countdown. The hands are specially designed to be prominent and remain fixed, allowing users to accurately read the remaining time. Furthermore, the dial is transparent, so even when the time markers are rotated above the indicator dial, the warnings and operating instructions on the sub-dial are still visible, providing further reminders to the user and enhancing safety.

[0019] Furthermore, a second threaded hole is provided at the center of the top of the movement shaft, and a fastening screw is threaded into the second threaded hole. A through hole for the movement shaft to pass through is provided along the axial direction of the fixing rod. A guide hole coaxial with the through hole and communicating with it is provided on the top of the transparent cover. The fastening screw passes through the guide hole and is threaded into the second threaded hole. The second threaded hole and the guide hole allow for quick fixing or detachment of the fixing rod from the movement shaft.

[0020] Furthermore, the top of the transparent cover is provided with a circular mounting groove, which is coaxial with the guide hole. The diameter of the mounting groove is larger than that of the guide hole. A second washer is provided inside the mounting groove. A fastening screw passes through the second washer and the guide hole and is fixedly connected to the second threaded hole. A cap is provided inside the mounting groove, and the second washer and the fastening screw are located inside the cap. The mounting groove and the second washer ensure that the fixing rod and the movement shaft are better fixed. The cap prevents the second washer and the fastening screw from being directly exposed, making the top of the time status indicator device more aesthetically pleasing. Attached Figure Description

[0021] Figure 1This is a perspective view of a flow-adaptive gas timing valve according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A longitudinal sectional view;

[0023] Figure 3 for Figure 1 Exploded view;

[0024] Figure 4 for Figure 1 Schematic diagram of the transmission mechanism;

[0025] Figure 5 for Figure 4 Exploded view;

[0026] Figure 6 for Figure 1 Exploded view of the central indicator dial after it is connected to the movement;

[0027] Figure 7 for Figure 6 A diagram showing the state of the indicator dial when it is not in operation;

[0028] Figure 8 for Figure 6 A diagram showing the status of the indicator dial during operation;

[0029] Figure 9 for Figure 1 3D view of the current-carrying component;

[0030] Figure 10 for Figure 9 Exploded view;

[0031] Figure 11 for Figure 9 A longitudinal sectional view;

[0032] Figure 12 for Figure 10 A three-dimensional view of the regulating valve core seat. Detailed Implementation

[0033] The following detailed description illustrates the specific implementation method:

[0034] The reference numerals in the accompanying drawings include: Valve body A, Indicator dial B, Operating method B1, Pointer B2, Warning symbol B3, Time scale B4, Outlet connection assembly C, Transmission mechanism E, Outlet connector 1, Third sealing ring 2, Second bushing 3, Air outlet passage 4, Fourth sealing ring 5, Push shaft 6, First adjusting spring 7, Mounting cover 8, Rotating shaft 9, Upper cover for valve closing 10, Mechanism 11, Base 12, Scale dial 13, Indicator dial 14, Transparent cover 15, Protective cover 16, Cap 17, Lower cover for valve closing 18. 1. Flow assembly D, transition base D1, transition spring D2, transition baffle D3, sleeve D31, retaining ring D32, flange D33, transition sealing ring D4, air passage hole D41, regulating valve core seat D5, regulating fixing seat D51, regulating cylinder D52, air inlet D53, flow passage hole D54, guide tube D55, first sealing ring D6, flow passage sealing ring D7, guide rod D8, second regulating spring D9, fifth sealing ring D10, flow passage spring D11, flow passage base D12, filter seat D13.

[0035] The basic implementation examples are as follows: Figures 1-3 As shown: A flow-adaptive gas timing valve includes a valve body A, which has a cavity. An inlet channel and an outlet channel 4 communicating with the cavity are respectively provided on opposite sides of the valve body A. A transmission mechanism E for opening or closing the outlet channel 4 of the valve body A is provided within the cavity. An outlet connection assembly C is provided within the outlet channel 4. The outlet connection assembly C includes an outlet connector 1 and a second bushing 3. The second bushing 3 is fixed within the outlet channel 4, and the outlet connector 1 is fixedly connected within the second bushing 3. A third sealing ring 2 is provided at the contact point between the outlet connector 1 and the outlet channel 4 to ensure sealing.

[0036] Transmission mechanism E as attached Figures 4-5As shown, the device includes a mounting cover 8, a rotating shaft 9, and a mechanism 11 that drives the rotating shaft 9 to deflect. The mounting cover 8 divides the cavity inside the valve body A into upper and lower parts. A fourth sealing ring 5 is provided between the mounting cover 8 and the inner wall of the valve body A to ensure a tight connection. Three columns are fixedly connected to the top of the mounting cover 8, and the mechanism 11 is fixedly connected to the mounting cover 8 through the columns. The bottom of the mounting cover 8 has a downwardly protruding mounting block with a horizontal through hole. A first bushing is provided in the through hole, and a push shaft 6 is horizontally slidably connected in the first bushing. The push shaft 6 has two shoulders coaxial with it, located on the same side of the mounting block. The shoulder away from the mounting block is used to seal the air outlet of the valve body A. The mounting cover 8 has a vertical connecting hole, and the rotating shaft 9 is rotatably connected in the connecting hole. The mounting cover 8 has two annular mounting grooves, and a second sealing ring is fitted inside the mounting grooves. To improve the stability of the rotating shaft 9 during rotation, the upper and lower ends of the mounting cover 8 are integrally formed with connecting shafts. The connecting shafts are coaxial with the connecting holes, and the rotating shaft 9 passes through the connecting shafts and is rotatably connected to them. The top of the rotating shaft 9 is fixedly connected to the upper valve cover 10, and the bottom of the rotating shaft 9 is fixedly connected to the lower valve cover 18. Both the upper valve cover 10 and the lower valve cover 18 are plastic parts. More specifically, both ends of the rotating shaft 9 are D-axis. The upper valve cover 10 and the lower valve cover 18 are provided with D-holes that mate with the D-axis. The rotating shaft 9 is fixedly connected to the upper valve cover 10 and the lower valve cover 18 by locking screws. The locking screws are coaxial with the rotating shaft 9, and a first washer is provided at the connection between the locking screws and the upper valve cover 10 and the lower valve cover 18.

[0037] In addition, the valve lower cover 18 includes a columnar connecting part and a snap-fit ​​part and a first baffle integrally formed on the connecting part. The connecting part is provided with a D hole and is fixedly connected to the bottom of the rotating shaft 9. The snap-fit ​​part is "U"-shaped with the open end away from the connecting part. The open end of the snap-fit ​​part is a U-shaped groove. The push shaft 6 is snapped into the U-shaped groove. The two shaft shoulders are located on both sides of the U-shaped groove. A first adjusting spring 7 is sleeved on the push shaft 6. One end of the first adjusting spring 7 is fixedly connected to the mounting block, and the other end abuts against the shaft shoulder adjacent to it. The first baffle is "L"-shaped. The end of the first baffle connected to the connecting part is perpendicular to the snap-fit ​​part. The other end of the first baffle is parallel to the snap-fit ​​part. The end of the first baffle away from the connecting part extends to the end of the push shaft 6 away from the connecting part. The end of the push shaft 6 away from the connecting plate abuts against the first baffle.

[0038] The cavity of valve body A is also provided with an indicator dial B, as shown in the attached figure. Figures 6-8As shown, the device includes a transparent cover 15 and a base 12 with a central hole. The upper surface of the base 12 has a circular blind hole. An opaque indicator disc 14 is fixedly connected to the upper surface of the base 12. Specifically, the indicator disc 14 is glued to the base 12. The indicator disc 14 has a clearance hole, and the upper surface of the indicator disc 14 is engraved with a pointer B2, a warning message B3, and an operating method B1 around the clearance hole. The outer wall of the indicator disc 14 has a first notch extending to the clearance hole. A protective cover 16 is fitted onto the transparent cover 15. A downward-extending fixing rod is provided at the center, and the fixing rod is rotatably connected to the center hole via a clearance hole; a transparent dial 13 is fixedly connected to the fixing rod, the dial 13 is located inside the blind hole and below the indicator dial 14, the dial 13 is mm away from the bottom of the blind hole, the dial 13 is provided with a time scale B4, the dial 13 is provided with a superior arc-shaped clearance opening coaxial with the fixing rod, the dial 13 is provided with a cut, the cut extends from one end of the clearance opening to the outer edge of the dial 13, and the free end of the cut of the dial 13 is located at the first notch.

[0039] The movement 11 includes a coil spring and a movement shaft for driving the fixed rod. The movement shaft is fixedly connected to the fixed rod, and the base 12 is fixedly connected to the movement 11 by a fixing screw. A second threaded hole is provided at the center of the top of the movement shaft, and a fastening screw is threaded into the second threaded hole. A through hole for the movement shaft to pass through is provided along the axial direction of the fixed rod. The top of the transparent cover 15 has a guide hole coaxial with the through hole and the two are connected. The top of the transparent cover 15 has a circular mounting groove, which is coaxial with the guide hole. The diameter of the mounting groove is larger than the diameter of the guide hole. A second washer is provided in the mounting groove. The fastening screw passes through the second washer and the guide hole and is fixedly connected to the second threaded hole. A cap 17 is detachably connected in the mounting groove. The second washer and the fastening screw are located in the cap 17 to improve aesthetics.

[0040] The intake passage is equipped with a flow-through component D, as shown in the attached figure. Figures 9-12 As shown, it includes a flow base D12, a transition assembly, and two valve cores. The flow base D12 contains a filter seat D13, a flow valve core seat, and a regulating valve core seat D5, which are fixedly connected in sequence. Specifically, the flow base D12 has an integrally formed annular boss. The flow valve core seat and the regulating valve core seat D5 are fixed on both sides of the boss. The connection between the regulating valve core seat D5 and the flow valve core seat and the boss is provided with a first sealing ring D6 and a fifth sealing ring D10, respectively. The outer edge of the flow valve core seat away from the filter seat D13 has a constriction, and the fifth sealing ring D10 is fitted onto the constriction.

[0041] Both the overflow valve core seat and the regulating valve core seat D5 are provided with overflow holes D54 for gas to pass through. An overflow sealing ring D7 is pressed into the overflow hole D54. More specifically, a fixing ring is provided on the side wall of the overflow hole D54, and an annular protrusion is provided on the overflow sealing ring D7 to cooperate with the fixing ring, so that the fixing ring supports the overflow sealing ring D7. Both the overflow valve core seat and the regulating valve core seat D5 have guide tubes D55 at the ends away from the filter seat D13. Specifically, rods are fixedly connected radially to the outer wall of the guide tube D55, and the other end of the rods is fixedly connected to the side wall of the overflow hole D54. One end of the guide tube D55 extends into the overflow sealing ring D7. The outer diameter of the guide tube D55 is smaller than the diameter of the overflow sealing ring D7. The guide tube D55 and the overflow hole D54 are coaxial. More specifically, the regulating valve core seat D5 includes an annular regulating fixed seat D51 and a regulating cylinder D52 fixedly connected to the regulating fixed seat D51 by the rods. The regulating cylinder D52 and the regulating fixed seat D51 are coaxial. The overflow hole D54 is located at the center of the regulating cylinder D52 and passes through it. Air inlets D53 are evenly distributed between the regulating cylinder D52 and the regulating fixed seat D51. The overflow sealing ring D7 is fixedly connected to the regulating cylinder D52.

[0042] Both valve cores include guide rods D8 and sealing plates for sealing overflow sealing rings D7. Guide rods D8 are fixedly connected to the center of the sealing plates. A second adjusting spring D9 and an overflow spring D11 are respectively sleeved on the two guide rods D8. The two guide rods D8 pass through the two overflow sealing rings D7 and are slidably connected in the corresponding guide tubes D55. One end of the overflow spring D11 and the second adjusting spring D9 abuts against the two sealing plates respectively. The ends of the overflow spring D11 and the second adjusting spring D9 away from the sealing plates are respectively sleeved on the corresponding guide tubes D55. The other end of the sealing plate abutting against the overflow spring D11 abuts against the filter seat D13, and the other end of the sealing plate abutting against the second adjusting spring D9 abuts against the guide tube D55 (which is connected to the overflow valve core seat). The distances of the two sealing plates from the corresponding guide tubes D55 are equal. In the initial state, the end of the guide rod D8 located in the overflow valve core seat away from the filter seat D13 abuts against the sealing plate not connected to it.

[0043] The transition assembly includes a transition sealing ring D4 and a transition base D1 with one open end. The open end of the transition base D1 is fixedly connected to the end of the flow base D12 away from the filter base D13, and the open end of the transition base D1 abuts against the end of the adjusting and fixing base D51 away from the filter base D13. Air outlets communicating with the opening are evenly distributed on the end of the transition base D1 away from the opening. A limiting tube extending towards the open end is provided at the inner bottom of the transition base D1, and a guide tube D55 slidably connected inside the limiting tube is located therein. A transition baffle D3 is slidably connected inside the transition base D1. Specifically, the transition baffle D3 includes a sleeve D31 and an annular retaining ring D32. The retaining ring D32 is slidably connected inside the transition base D1. Connecting rods are evenly distributed on the outer wall of the sleeve D31. The end of the connecting rod away from the sleeve D31 is fixedly connected to the inner wall of the retaining ring D32. The gap between the connecting rod, the sleeve D31, and the inner wall of the retaining ring D32 forms a through hole. It communicates with the flow passage D54; the sleeve D31 is slidably sleeved on the guide tube D55 of the regulating valve core seat D5; a transition spring D2 is sleeved on the sleeve D31, one end of the transition spring D2 is sleeved on the limiting tube and abuts against the inner bottom of the transition base D1, and the other end of the transition spring D2 abuts against the retaining ring D32; the transition sealing ring D4 is sleeved on the regulating cylinder D52, and the transition sealing ring D4 has vent holes D41 evenly distributed on it, and the transition sealing ring D4 faces the retaining ring D52. One side of the ring D32 has an annular groove, and the vent D41 is located in the groove. The vent D41 communicates with the vent D53. The side of the retaining ring D32 facing the transition sealing ring D4 has an annular flange D33 that mates with the groove. The diameter of the flow hole D54 is larger than the outer diameter of the sleeve D31. The sleeve D31 and the adjusting cylinder D52 are coaxial. The elastic force of the flow spring D11 is greater than the elastic force of the transition spring D2 and greater than the elastic force of the second adjusting spring D9.

[0044] The specific implementation process is as follows:

[0045] Install outlet connection assembly C: Fix the second bushing 3 inside the air outlet channel 4, then fix the outlet connector 1 inside the second bushing 3, and ensure that the contact part between the outlet connector 1 and the air outlet channel 4 is provided with a third sealing ring 2 to ensure sealing.

[0046] Install the transmission mechanism E: Install the fourth sealing ring 5 between the mounting cover 8 and the inner wall of the valve body A to ensure a tight connection. Then, fix the core 11 to the top of the mounting cover 8 via the column. Place the first bushing in the through hole of the bottom mounting block of the mounting cover 8, and then slide the push shaft 6 horizontally into the first bushing, ensuring that the two shoulders on the push shaft 6 are on the same side of the mounting block. Rotate the rotating shaft 9 into the vertical connecting hole on the mounting cover 8, and improve the smoothness of the rotation of the rotating shaft 9 through the connecting shaft. Fit the second sealing ring into the mounting groove on the rotating shaft 9. Connect the upper valve cover 10 and the lower valve cover 18 to the two ends of the rotating shaft 9 through the D-axis and D-hole, and fix them with locking screws. At the same time, place the first washer at the connection between the locking screw and the upper valve cover 10 and the lower valve cover 18. The push shaft 6 is snapped into the U-shaped groove of the valve lower cover 18 and fitted with the first adjusting spring 7. One end of the first adjusting spring 7 is fixed on the side of the mounting block facing the shaft shoulder, and the other end abuts against the shaft shoulder adjacent to it. In the initial state, the shaft shoulder away from the mounting block faces the outlet connector 1 and seals it.

[0047] Install indicator dial B: Attach the opaque indicator dial 14 to the upper surface of the base 12 using adhesive, ensuring the clearance hole, first notch, and the engraved pointer B2, warning message B3, and operating method B1 on the indicator dial 14 are accurately positioned. Secure the transparent scale dial 13 to the fixing rod of the transparent cover 15, positioning it within the blind hole on the upper surface of the base 12 and below the indicator dial 14, maintaining a specific distance between the scale dial 13 and the bottom of the blind hole. Slide the transparent cover 15 onto the protective cover 16, and secure the fixing rod to the movement shaft via the second threaded hole at the top of the movement shaft, the fastening screw, the second washer, and the guide hole. Finally, install the cap 8 in the mounting slot to improve aesthetics.

[0048] Install flow-through component D: Install flow-through component D inside the intake passage of valve body A.

[0049] In the initial state, the flange D33 of the transition baffle D3 blocks the vent D41 on the transition sealing ring D4, so that after the gas flows into the filter seat D13, it can only pass through the vent sealing ring D7 in the flow valve core seat and the regulating valve core seat D5, then through the through hole on the transition baffle D3, and finally enter the cavity of the valve body A through the vent on the transition base D1. The two sealing plates are in their initial positions under the action of the flow spring D11 and the second regulating spring D9, respectively. The end of the guide rod D8 located in the flow valve core seat away from the filter seat D13 abuts against the sealing plate between the flow valve core seat and the regulating valve core seat D5. The scale 13 of the indicator dial B is hidden below the indicator dial 14. The warning B3 and operation method B1 on the indicator dial 14 are clearly visible. The push shaft 6 is in its initial position under the action of the first regulating spring 7. The shoulder of the push shaft 6 away from the mounting block seals the vent end of the valve body A, realizing valve closure.

[0050] In use, rotating the transparent cover 15 clockwise causes the dial 13 to rotate, partially obscuring the indicator dial 14. As the dial 13 rotates out, the time scale B4 on it becomes visible, and the pointer B2 corresponding to the time scale B4 indicates the current time. Releasing the transparent cover 15 releases the spring on the movement 11, causing the movement 11 to rotate the dial 13 and the transparent cover 15 in opposite directions. At this point, the indicator dial B begins its timer function (countdown). Throughout the countdown, the larger time scale B4 is gradually covered by the opaque indicator dial 14, with fewer and fewer scales displayed, truly embodying the concept of a countdown. The pointer B2 remains prominent and fixed, allowing the user to accurately read the remaining time. In addition, the dial 13 is made transparent, so even if the time scale B4 of the dial 13 is rotated out to the top of the indicator, the warning message B3 and the operation method B1 on the prompt dial 14 can still be seen, thus reminding the user again and further improving the safety of use.

[0051] When the coil spring on the mechanism 11 releases its elastic force, it causes the closing plate of the mechanism 11 to deflect the upper valve cover 10 to a certain extent. Since the upper valve cover 10 and the lower valve cover 18 are respectively fixedly connected to the two ends of the rotating shaft 9, the rotating shaft 9 rotates and transmits the rotational motion to the lower valve cover 18. With the cooperation of the first adjusting spring 7 and the shoulder, the push shaft 6 is driven to move towards the air inlet end of the valve body A, so that the shoulder on the push shaft 6 away from the mounting block disengages from the air outlet end of the valve body A, thereby opening the valve. At this time, gas flows in from the air inlet channel of the valve body A, passes through the flow assembly D, and enters the cavity of the valve body A.

[0052] When the flow rate increases, the pressure generated by the airflow gradually increases to the elastic force of the second adjusting spring D9. The guide rod D8 in the regulating valve core seat D5 and the sealing plate connected to it move towards the transition base D1 until the sealing plate and the flow sealing ring D7 in the regulating valve core seat D5 are tightly fitted together, cutting off the airflow from flowing into the cavity of the valve body A. If the flow rate no longer increases at this time, the flow assembly D is in the closed valve state.

[0053] Because the elastic force of the transition spring D2 is close to that of the second adjusting spring D9, if the flow rate continues to increase (normal flow rate increase), the airflow enters through the air inlet D53, and then acts on the transition baffle D3 through the air passage D41 on the transition sealing ring D4. The pressure generated by the airflow can open the transition baffle D3, causing the transition baffle D3 to move towards the cavity of valve body A, thereby allowing the airflow to enter the cavity of valve body A through the through hole of the transition baffle D3, and the gas timer valve is in normal working condition.

[0054] If the flow rate continues to increase, even exceeding the spring force of the overcurrent spring D11 (the spring force of the overcurrent spring D11 is at the maximum allowable overcurrent value; if it exceeds the spring force of the overcurrent spring D11, it can be determined that the overcurrent is caused by a fault), then the guide rod D8 connected to the overcurrent spring D11 and the sealing plate are pressed towards the overcurrent sealing ring D7 until they fit tightly. The overcurrent assembly D completely blocks the gas from entering the valve body A, thus achieving overcurrent protection.

[0055] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A flow-adaptive gas timing valve, comprising a valve body, a cavity within the valve body, an inlet channel and an outlet channel communicating with the cavity on opposite sides of the valve body, and a transmission mechanism for opening or closing the outlet channel of the valve body within the cavity; the inlet channel is provided with a flow-through component, characterized in that: The flow-through assembly includes a flow-through base, a transition assembly, and two valve cores. A filter seat, a flow-through valve core seat, and a regulating valve core seat are sequentially fixedly connected within the flow-through base. Both the flow-through valve core seat and the regulating valve core seat have flow-through holes for gas passage, and each flow-through hole contains a flow-through sealing ring. Each valve core includes a guide rod and a sealing plate for sealing the flow-through sealing rings. The guide rod is fixedly connected to the center of the sealing plate. A second adjusting spring and a flow-through spring are respectively sleeved on the two guide rods. The two guide rods pass through the two flow-through sealing rings. One end of the flow-through spring and the second adjusting spring abuts against the two sealing plates, and the other end of the flow-through spring and the second adjusting spring abuts against the flow-through valve core seat and the regulating valve core seat, respectively. The other end of the sealing plate abutting against the flow-through spring abuts against the filter seat, and the other end of the sealing plate abutting against the second adjusting spring abuts against the flow-through valve core seat. The transition assembly includes a transition seal. The system comprises a transition base with an open end and a ring. The open end of the transition base is fixedly connected to the end of the flow base away from the filter seat. The end of the transition base away from the open end has evenly distributed air outlets communicating with the open end. A transition baffle is slidably connected inside the transition base. A transition spring is held at the center of the transition baffle, and the other end of the transition spring abuts against the inner bottom wall of the transition base. The transition sealing ring is located between the regulating valve core seat and the transition baffle, and is fixedly connected to the end of the regulating valve core seat away from the flow valve core seat. The end of the transition baffle away from the transition spring is in contact with the transition sealing ring. Through holes are evenly distributed on the transition baffle and communicate with the flow outlets. Air inlets are evenly distributed at the contact portion between the regulating valve core seat and the transition sealing ring, communicating with the gap between the regulating valve core seat and the flow valve core seat. Exhaust holes are evenly distributed on the transition sealing ring, communicating with the air inlets. The elastic force of the flow spring is greater than or equal to the elastic force of the transition spring and the elastic force of the second regulating spring.

2. The flow-adaptive gas timing valve according to claim 1, characterized in that: The overflow base has an integrally formed annular boss, and the overflow valve core seat and the regulating valve core seat are respectively fixed on both sides of the boss; the connection between the regulating valve core seat and the overflow valve core seat and the boss is provided with a first sealing ring and a fifth sealing ring respectively; the outer edge of the overflow valve core seat away from the filter seat is provided with a constriction, and the fifth sealing ring is fitted at the constriction.

3. The flow-adaptive gas timing valve according to claim 2, characterized in that: Both the overflow valve core seat and the regulating valve core seat have guide tubes at their ends away from the filter seat. Two guide rods are slidably connected inside the two guide tubes, which extend into the two overflow sealing rings. The ends of the overflow spring and the second regulating spring away from the sealing plate are respectively sleeved on the corresponding guide tubes. The two sealing plates are equidistant from the corresponding guide tubes. In the initial state, the end of the guide rod located inside the overflow valve core seat away from the filter seat abuts against the sealing plate between the overflow valve core seat and the regulating valve core seat. The transition sealing ring has an annular groove on the side facing the transition baffle, and the vent is located in the groove. The transition baffle has an annular flange that cooperates with the groove.

4. The flow-adaptive gas timing valve according to claim 3, characterized in that: The transition baffle includes a sleeve and an annular retaining ring. The retaining ring is slidably connected inside the transition base. Connecting rods are evenly distributed on the outer wall of the sleeve. The end of the connecting rod away from the sleeve is fixedly connected to the inner wall of the retaining ring. The gap between the connecting rod, the sleeve and the inner wall of the retaining ring forms the through hole. The sleeve is slidably sleeved on the guide tube of the regulating valve core seat.

5. The flow-adaptive gas timing valve according to claim 4, characterized in that: The regulating valve core seat includes an annular regulating fixed seat and a regulating cylinder fixedly connected inside the regulating fixed seat. The regulating cylinder and the regulating fixed seat are coaxial. The flow passage is located at the center of the regulating cylinder and passes through it. The air inlet is evenly distributed between the regulating cylinder and the regulating fixed seat. The flow sealing ring is fixedly connected inside the regulating cylinder. The diameter of the flow passage is larger than the outer diameter of the sleeve. The sleeve and the regulating cylinder are coaxial. One end of the guide tube is fixedly connected inside the regulating cylinder. The transition sealing ring is sleeved on the regulating cylinder. The flange is located on the side of the retaining ring facing the transition sealing ring.

6. A flow-adaptive gas timing valve according to any one of claims 1 to 5, characterized in that: The transmission mechanism includes a mounting cover and a rotating shaft. The bottom of the mounting cover has a downwardly protruding mounting block with a horizontal through hole. A push shaft is horizontally slidably connected in the through hole. The push shaft has two coaxial shoulders located on the same side of the mounting block. The mounting cover has a vertical connecting hole, and the rotating shaft is rotatably connected in the connecting hole. The top of the rotating shaft is fixedly connected to the upper cover of the valve. The top of the mounting cover is equipped with a mechanism for driving the upper cover of the valve to deflect. The bottom of the rotating shaft is fixedly connected to the lower cover of the valve. The lower cover of the valve has a U-shaped groove, and the push shaft is engaged in the U-shaped groove. The two shoulders are located on both sides of the U-shaped groove. A first adjusting spring is sleeved on the push shaft. One end of the first adjusting spring is fixedly connected to the mounting block, and the other end abuts against the adjacent shoulder.

7. The flow-adaptive gas timing valve according to claim 6, characterized in that: The lower cover of the valve is integrally formed with an "L"-shaped first baffle. The end of the first baffle away from the lower cover of the valve extends to the end of the push shaft away from the lower cover of the valve, and the end of the push shaft away from the lower cover of the valve abuts against the first baffle.

8. The flow-adaptive gas timing valve according to claim 7, characterized in that: The valve body's cavity also houses an indicator dial, which includes a transparent cover and a base with a central hole. The upper surface of the base has a blind hole, and an opaque indicator disc is fixedly connected to the upper surface of the base. The indicator disc has a clearance hole, and the upper surface of the indicator disc is engraved with pointers, warnings, and operating instructions around the clearance hole. The outer wall of the indicator disc has a first notch extending into the clearance hole. A downward-extending fixing rod is located at the center of the transparent cover, and the fixing rod is rotatably connected to the central hole via the clearance hole. A transparent scale is fixedly connected to the fixing rod. The dial is located inside the blind hole and below the indicator dial, with the dial 1.5 to 2.5 mm from the bottom of the blind hole. The dial has time markings and a coaxial arc-shaped clearance on it. The dial also has a cut that extends from one end of the clearance to the outer edge of the dial, with the free end of the cut located at the first notch. A protective cover is fitted onto the transparent cover. The mechanism includes a coil spring and a mechanism shaft for driving the fixed rod. The mechanism shaft is fixedly connected to the fixed rod, and the base is fixedly connected to the mechanism.

9. A flow-adaptive gas timing valve according to claim 8, characterized in that: The center of the top of the movement shaft is provided with a second threaded hole, and a fastening screw is threaded into the second threaded hole. The axis of the fixing rod is provided with a through hole for the movement shaft to pass through. The top of the transparent cover is provided with a guide hole coaxial with the through hole and the two are connected. The fastening screw passes through the guide hole and is threaded into the second threaded hole.

10. A flow-adaptive gas timing valve according to claim 9, characterized in that: The top of the transparent cover is provided with a circular mounting groove, which is coaxial with the guide hole. The diameter of the mounting groove is larger than the diameter of the guide hole. A second washer is provided in the mounting groove. A fastening screw passes through the second washer and the guide hole and is fixedly connected to the second threaded hole. A cap is provided in the mounting groove, and the second washer and the fastening screw are located in the cap.

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