Pressure proportional regulating valve and gas proportional regulating device

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By adopting a design that rotatably connects the damper seat and damper component in the gas proportional regulating valve, and using elastic elements and push rods to drive the damper component to rotate and adjust the flow channel opening, the problem of unstable damper installation is solved, achieving higher adjustment accuracy and extended damper life.

CN122305273APending Publication Date: 2026-06-30ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
Filing Date: 2024-12-31
Publication Date: 2026-06-30

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Abstract

This application provides a pressure proportional regulating valve and a gas proportional regulating device, which can improve the reliability of damper installation and help ensure the accuracy of damper adjustment. The pressure proportional regulating valve provided in this application includes: a damper seat; a damper component rotatably connected to the damper seat; a push rod capable of pushing the damper to rotate around the damper seat; a valve core having a flow channel, the damper component being rotatable relative to the valve core to adjust the opening of the flow channel, the damper seat being fixedly connected to or limited by the valve core; an elastic element including a mating part and a pressing part, the damper component including a damper body and a damper rod, the mating part being connected to the damper rod, and the pressing part abutting against the damper body; the damper body is blocked by the elastic force of the elastic element, or the push rod can push the damper body away from the flow channel under external force.

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Description

Technical Field

[0001] This invention relates to the field of valve device technology, specifically to a pressure proportional regulating valve and a gas proportional regulating device. Background Technology

[0002] A pressure proportional regulating valve is installed at the outlet of the gas proportional regulating device. For example... Figure 16 As shown, Figure 9 This is a schematic diagram of a pressure proportional regulating valve.

[0003] The pressure proportional regulating valve includes a valve core 02, a damper 03, and a push rod 01. The damper 03 is snapped into one end of the push rod 01 via a snap fastener. The valve core 02 is provided with a flow channel 02a and a damper groove. The push rod 01 can move along its axial direction to drive the damper 03 to insert into or leave the damper groove. When the damper 03 is inserted into or removed from the damper groove, it can adjust the obstruction area of the flow channel 02, thereby adjusting the flow area of the flow channel 02 to regulate the fluid pressure and flow rate.

[0004] However, the damper 03 of this gas proportional regulating valve is not reliably installed and is prone to detaching from the push rod 01, thus affecting the regulation. Summary of the Invention

[0005] The purpose of this application is to provide a pressure proportional regulating valve and a gas proportional regulating device, which can improve the reliability of damper installation and help ensure the accuracy of damper regulation.

[0006] To solve the above-mentioned technical problems, this application provides a pressure proportional regulating valve, comprising:

[0007] Airlock seat;

[0008] A damper assembly, wherein the damper assembly and the damper seat are rotatably connected;

[0009] A push rod, which can push the damper to rotate around the damper seat;

[0010] The valve core is provided with a flow channel, and the damper component can rotate relative to the valve core to adjust the opening of the flow channel. The damper seat is fixedly connected to or limited to the valve core.

[0011] The elastic element includes a pressing part, and the damper component includes a damper body part. The pressing part abuts against the damper body part. The damper body part is blocked by the elastic force of the elastic element, or the push rod can push the damper body part away from the flow channel under the action of external force.

[0012] This application also provides a gas proportional regulating device, wherein the outlet position of the gas proportional regulating device is provided with the pressure proportional regulating valve described above.

[0013] The proportional damper regulating valve in this application features a dedicated damper seat onto which the damper component is rotatably connected, thus reliably connecting the damper component to the valve core. This ensures a more reliable connection and prevents the damper component from easily dislodging from its working position. Furthermore, unlike the damper-driven valves mentioned in the background art, which are prone to tilting and friction with the valve core during damper movement, the pusher in this application rotates the damper component to adjust the flow channel opening. This prevents the damper component from tilting and rubbing against the valve core, thus improving its service life and the accuracy of flow control. The gas proportional regulating device provided in this application has the same technical effects as the aforementioned pressure proportional regulating valve and will not be discussed again. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the pressure proportional regulating valve in the embodiments of this application;

[0015] Figure 2 for Figure 1 A schematic diagram of the valve core of a medium-pressure proportional control valve;

[0016] Figure 3 for Figure 1 A schematic diagram of the damper structure of a medium-pressure proportional control valve;

[0017] Figure 4 for Figure 1 A schematic diagram of the damper seat of a medium-pressure proportional regulating valve;

[0018] Figure 5 for Figure 4 A structural schematic diagram of the stroke portal arch from another perspective;

[0019] Figure 6 for Figure 4 Stroke gate and Figure 3 A schematic diagram of the assembly of the central stroke door;

[0020] Figure 7 for Figure 1 A schematic diagram of the torsion spring structure of a medium-pressure proportional control valve;

[0021] Figure 8 This is a schematic diagram of the pressure proportional regulating valve in the second embodiment of this application;

[0022] Figure 9 for Figure 8 A schematic diagram of the valve core of a medium-pressure proportional control valve;

[0023] Figure 10 for Figure 8 A schematic diagram of the damper component of a medium-pressure proportional control valve;

[0024] Figure 11 for Figure 8 A schematic diagram of the damper seat of a medium-pressure proportional regulating valve;

[0025] Figure 12 for Figure 11 A structural schematic diagram of the stroke portal arch from another perspective;

[0026] Figure 13 for Figure 11 A schematic diagram of the assembly of the air intake valve seat and the damper components shown in the figure;

[0027] Figure 14 for Figure 1 A schematic diagram of the elastic element of a medium-pressure proportional control valve;

[0028] Figure 15 for Figure 1 Cross-sectional schematic diagram of a medium-pressure proportional control valve;

[0029] Figure 16 This is a schematic diagram of the structure of a gas proportional adjustment device according to an embodiment of this application;

[0030] Figure 17 This is a schematic diagram of a pressure proportional regulating valve.

[0031] The annotations in the attached figures are explained as follows:

[0032] 100 - Pressure proportional regulating valve;

[0033] 10-Valve core; 10a-First connection hole; 10b-Positioning hole; 10c-Flow channel; 10d-Assembly hole; 10e-Snap-fit hole;

[0034] 20 - Putter;

[0035] 30-Damper component; 301-Damper body; 3011-Damper cover; 3012-Damper insertion part; 3013-Damper flange; 302-Damper rod; 303-Connecting part;

[0036] 40-Damper seat; 401-Plate-shaped main body; 402-Slot seat; 402a-Slot; 403-Hole seat; 403a-Mounting hole; 4031-Second limiting structure; 4031-First hole seat section; 4032-Second hole seat section; 404-Limit seat; 404a-Limit groove; 4041-First limiting structure; 405-Positioning post; 406-Connecting seat; 406a-Second connecting hole; 407-Limiting post; 408-Snap fastener;

[0037] 50 - Fastening screw;

[0038] 60-Elastic element; 601-Torsion spring body; 603-First torsion spring lever arm; 602-Second torsion spring lever arm; 604-Elastic rod; 605-Elastic positioning ring; 606-Elastic hook; 6061-Bending part;

[0039] 200 - Valve body;

[0040] 201-Valve body inlet; 202-Main valve port; 203-Secondary valve port; 204-Channel; 205-Flow path; 206-Differential pressure valve port; 207-Cavity; 208-Valve body outlet; 209-Pressure chamber;

[0041] 3001 - First solenoid valve; 3002 - Second solenoid valve;

[0042] 400 - Differential pressure valve; 4001 - Differential pressure valve back cavity; 4002 - Diaphragm; 4003 - Valve stem;

[0043] 500 - Pressure regulating valve; 501 - Pressure regulating diaphragm;

[0044] 1000 - Gas proportional control device;

[0045] 01-Push rod; 02-Valve core; 02a-Flow channel; 03-Damper. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the pressure proportional regulating valve 100 in the first embodiment of this application.

[0048] In this embodiment, the pressure proportional regulating valve 100 can be installed in the gas proportional regulating device 1000 (shown in...). Figure 8 The outlet position is used to regulate the outlet pressure. In this embodiment, the pressure proportional regulating valve 100 includes a damper seat 40, a damper component 30, a push rod 20, and a valve core 10. Each part will be described in turn below.

[0049] Please read first. Figure 2 , Figure 2 for Figure 1 A schematic diagram of the valve core 10 of the medium pressure proportional regulating valve 100.

[0050] like Figure 2As shown, the valve core 10 is provided with a flow channel 10c. The valve core 10 is generally a plate-shaped structure. The flow channel 10c runs through the valve core 10 along the thickness direction of the valve core 10. When this pressure proportional regulating valve 100 is specifically applied to the gas proportional regulating device 1000, the flow channel 10c is used to flow gas, specifically to flow natural gas. The valve core 10 is located at the outlet position of the gas proportional regulating device 1000. The natural gas inside the gas proportional regulating device 1000 can flow from one side of the valve core 10 through the flow channel 10c to the other side of the valve core 10. Figure 2 The flow channel 10c of the valve core 10 shown in the diagram is roughly arc-shaped, and the width of the flow channel 10c gradually widens from one end of the arc to the other. In this embodiment, the valve core 10 is also provided with a mounting hole 10d, which can be used to install a differential pressure valve. That is, the valve core 10 serves as a component of the pressure proportional regulating valve 100 and can also be used to install other components to achieve integration and full utilization of space. This will not be discussed in detail.

[0051] Please continue to refer to this. Figure 1 and combination Figure 3 understand, Figure 3 for Figure 1 A schematic diagram of the damper component 30 of the medium-pressure proportional regulating valve 100.

[0052] In this embodiment, the damper component 30 includes a damper body 301, which is also generally plate-shaped. The shape of the damper body 301 is roughly matched with the shape of the flow channel 10c provided in the valve core 10. The damper body 301 can cover the flow channel 10c, thereby cutting off the flow channel 10c. When the pressure proportional regulating valve 100 is closed, the damper body 301 leaves the flow channel 10c, which can open the flow channel 10c and open the pressure proportional regulating valve 100.

[0053] In this embodiment, the damper body 301 specifically includes a damper insertion part 3012 and a damper cover part 3011. When the flow channel 10c is cut off, the damper insertion part 3012 is embedded in the flow channel 10c. The four sides of the damper insertion part 3012 and the corresponding wall of the flow channel 10c can contact and cooperate. The damper cover part 3011 presses on the surface of the valve core 10. That is, the damper body 301 is designed with unequal thickness. When the valve is closed, the projection of the damper insertion part 3012 is located within the projection of the damper cover part 3011 along the direction perpendicular to the flow channel 10c. Thus, the damper body 301 has a flange around its perimeter. Specifically, the flange presses on the side surface of the valve core 10 facing the damper component 30. With this configuration, the damper insertion part 3012 and the damper cover part 3011 can be combined to better seal the flow channel 10c. Of course, the damper body part 301 can also be a flat plate structure of equal thickness, which can be pressed onto the valve core 10 or fully embedded in the flow channel 10c of the valve core 10, thus achieving the purpose of closing the pressure proportional regulating valve 100.

[0054] In addition, matching the shape of the flow channel 10c, the shape of the damper body 301 is roughly the same as that of the flow channel 10c, and is also an arc shape that gradually expands from one end to the other.

[0055] In addition, let's look at... Figures 4 to 6 , Figure 4 for Figure 1 A schematic diagram of the damper seat 40 of the medium-pressure proportional regulating valve 100; Figure 5 for Figure 4 Another structural schematic diagram of stroke portal 40; Figure 6 for Figure 4 Stroke seat 40 and Figure 3 A schematic diagram of the assembly of the central air damper component 30. Figure 6 The elastic element 60 is also shown.

[0056] The damper seat 40 is used to mount the damper component 30. The damper seat 40 and the valve core 10 are fixedly connected or limitedly connected, which facilitates the disassembly and processing of the damper seat 40 and the valve core 10. In this embodiment, the damper seat 40 is fixedly and detachably connected to the valve core 10, such as... Figure 2 As shown, the valve core 10 is provided with a positioning hole 10b and a first connecting hole 10a. Looking further... Figure 3 The damper seat 40 also includes a connecting seat 406, which has a second connecting hole 406a. The connecting seat 406 and the valve core 10 are connected by fastening screws 50 inserted into the first connecting hole 10a and the second connecting hole 406a. The connection is simple and reliable. At least one of the first connecting hole 10a and the second connecting hole 406a can be a threaded hole that matches the fastening screw 50. Of course, the damper seat 40 and the valve core 10 can also be connected and fixed by other means, such as snap-fit or pin-fit. It should be noted that the fastening screw 50 can not only connect the valve core 10 and the damper seat 40, but can also be inserted into the valve body 200 to directly fasten both the valve core 10 and the damper seat 40 to the valve body 200. In this case, the valve body 200 can be provided with threaded holes that mate with the fastening screw 50. The first connecting hole 10a and the second connecting hole 406a can be threaded holes or smooth holes.

[0057] At the same time, the damper seat 40 also includes a positioning post 405, such as Figure 5As shown, the positioning pin 405 can be inserted into the positioning hole 10b of the valve core 10. During assembly, the positioning pin 405 can be inserted into the positioning hole 10b for positioning first, and then the fastening screw 50 can be inserted into the first connecting hole 10a and the second connecting hole 406a for threaded connection and fixation. The positioning hole 10b is set for pre-positioning, which facilitates the alignment of the first connecting hole 10a and the second connecting hole 406a. On the other hand, the positioning pin 405 itself can also play a connecting role. It can be seen that this structure makes the assembly of the damper seat 40 and the valve core 10 faster and more reliable.

[0058] It is worth noting that in this embodiment, the damper component 30 and the damper seat 40 are rotatably connected. The push rod 20 of the pressure proportional regulating valve 100 can push the damper component 30 to rotate around the damper seat 40. When the damper component 30 rotates, the opening of the flow channel 10c can be adjusted. Figure 1 As shown, one end of the push rod 20 contacts the damper body 301. Specifically, the push rod 20 can be threadedly connected to the valve body 200 of the gas proportional regulating device 1000. When the push rod 20 moves along its axial direction (to... Figure 1 (For the perspective of vertical movement), the push rod 20 can push open the damper body 301, causing it to rotate around the damper rod 302 and leave the flow channel 10c, thereby opening the flow channel 10c. The push rod 20 can be manually operated by the operator to rotate relative to the valve body 200 to achieve the axial movement of the push rod 20. Of course, the axial movement of the push rod 20 can also be achieved by other means such as electrical control.

[0059] In this embodiment, the pressure proportional regulating valve 100 is equipped with a dedicated damper seat 40, on which the damper component 30 is rotatably connected, thereby reliably connecting the damper component 30 to the valve core 10. The connection of the damper component 30 is more reliable, and the damper component 30 is not easily dislodged from its working position. Moreover, the damper 03 mentioned in the background art is stuck to the push rod 01, and is prone to tilting and rubbing against the valve core 02 during the movement of the damper 03. In this embodiment, the push rod 20 pushes the damper component 30 to rotate to adjust the opening of the flow channel 10c. The damper component 30 is less likely to rub against the valve core 10 and get stuck due to tilting, thereby improving the service life of the damper component 30 and the accuracy of flow control.

[0060] like Figure 3 As shown, the damper component 30 includes a damper body 301 and a damper rod 302. The damper body 301 is used to cooperate with the flow channel 10c, and the damper rod 302 is used to cooperate with the damper seat 40 to achieve a rotatable connection. Specifically, the damper seat 40 is provided with a mounting hole 403a, and the damper rod 302 can be inserted into the mounting hole 403a of the damper seat 40 to achieve a rotatable connection with the damper seat 40.

[0061] Specifically, one end of the damper body 301 is connected to the damper rod 302. It can be an integral part of the damper rod 302, or it can be separately set and then fixedly connected. Figure 3 The damper body 301 is connected to the damper rod 302 via a connecting part 303. For example... Figure 4 As shown, the damper seat 40 includes a plate-shaped main body 401, and a hole seat 403 and a slot seat 402 protruding from the plate-shaped main body 401.

[0062] The hole seat 403 has a mounting hole 403a, and the slot seat 402 has a first slot 402a, which is a through-slot structure with both ends connected. Both the slot seat 402 and the hole seat 403 protrude from the same side of the plate-shaped main body 401 along the thickness direction of the plate-shaped main body 401. This side is defined as the first side of the plate-shaped main body 401. The aforementioned positioning post 405 protrudes from the second side of the plate-shaped main body 401. The first side and the second side are different sides distributed along the thickness direction of the plate-shaped main body 401.

[0063] The first slot 402a of the slot seat 402 and the mounting hole 403a of the hole seat 403 are distributed along a first direction, which is parallel to the axial direction of the damper rod 302. In fact, the first slot 402a, the mounting hole 403a, and the damper rod 302 are coaxially arranged. As mentioned above, the damper body 301 is gradually widened from one end to the other. One end of the damper rod 302 is connected to the wider end of the damper body 301, and the other end of the damper rod 302 is inserted into the mounting hole 403a. In addition, a portion of the damper rod 302 is located within the first slot 402a. During assembly, one end of the damper rod 302 is inserted into the mounting hole 403a and simultaneously engaged in the first slot 402a. In this way, the damper rod 302 can be further limited, ensuring the stability of the damper component 30. Furthermore, based on the aforementioned understanding, both the flow channel 10c and the damper body 301 are designed as gradually expanding arc-shaped structures, and the wider end of the damper body 301 is connected to the damper rod 302. Therefore, during the rotation and opening process of the damper body 301, the narrower end moves away from the flow channel 10c first, that is, the narrower part of the flow channel 10c is opened first, and then the entire flow channel 10c is gradually opened according to the needs. This makes it easier to control the flow rate, especially the opening control of small flow rates is more precise.

[0064] In addition, in this embodiment, the damper seat 40 includes a first limiting structure 4041 and a second limiting structure 4031, and the damper rod 302 is axially limited between the first limiting structure 4041 and the second limiting structure 4031, so as to... Figure 6 From the perspective of the damper rod 302, the damper rod 302 is limited to the left and right, which can further limit the damper rod 302. Combined with the first slot 402a and the mounting hole 403a, the damper rod 302 is limited in multiple directions, thereby further ensuring the stability of the damper component 30.

[0065] In detail, the damper seat 40 also includes a limiting seat 404 protruding from the first side of the plate-shaped main body 401. The limiting seat 404, the slot seat 402, and the hole seat 403 are distributed sequentially along the first direction. The limiting seat 404 is provided with the aforementioned first limiting structure 4041. Specifically, the first limiting structure 4041 is the surface of the limiting seat 404 facing the slot seat 402, such as... Figure 4 , 6 As shown, the connecting portion 303 of the damper component 30 can abut against the first limiting structure 4041 axially. It is understood that the limiting of the damper component 30 is not limited to the abutment between the connecting portion 303 and the first limiting structure 4041. For example, the end of the damper rod 302 near the limiting seat 404 can abut against the limiting seat 404, or the damper rod 302 can be provided with a radial protrusion or a stepped portion to abut against the first limiting structure 4041; these are all feasible solutions. Figure 1 , 3 As shown, in this embodiment, the connecting part 303 of the damper component 30 is roughly L-shaped to allow the damper body 301 to rotate more and reduce rotational interference. At this time, the connecting part 303 and the first limiting structure 4041 are used to abut and limit the damper, which makes the structure simpler.

[0066] Let's look again. Figure 4 The mounting hole 403a on the mounting base 403 is not a through hole axially penetrating the mounting base 403. One end of the mounting hole 403a has a wall portion as a second limiting structure 4031, which can abut against the end of the damper rod 302 inserted into the mounting hole 403a. For example, the mounting hole 403a can be configured as a blind hole, with the bottom wall portion of the blind hole serving as the second limiting structure 4031. Alternatively, the second limiting structure 4031 may not cover the entire end of the mounting hole 403a, but rather a wall portion covering only a portion of the end of the mounting hole 403a, such as... Figure 4 As shown, as long as it can form an abutment with the end of the damper rod 302, the purpose of limiting the position can be achieved.

[0067] Let's look again. Figure 1 and Figure 4 In this embodiment, the limiting seat 404 is provided with a limiting groove 404a. The extending direction of the limiting groove 404a is parallel to the axial direction of the damper rod 302, and the groove opening direction of the limiting groove 404a is perpendicular to the groove opening direction of the first slot 402a. Figure 6From this perspective, the opening of the limiting groove 404a faces upward, and the opening of the first locking groove 402a faces horizontally. After assembly, a portion of the damper rod 302 is located within the limiting groove 404a. Specifically, one end of the damper rod 302 is located within the mounting hole 403a, and the other end is located within the limiting groove 404a. The cooperation between the limiting groove 404a and the first locking groove 402a satisfies the limitation of the damper rod 302 and facilitates its assembly. During assembly, one end of the damper rod 302 can be first inserted into the mounting hole 403a, and then embedded into the limiting groove 404a and locked into the first locking groove 402a.

[0068] like Figure 4 , 5 As shown, in this embodiment, the hole seat 403 of the damper seat 40 is L-shaped, protecting the first hole seat section 4031 and the second hole seat section 4032 which are perpendicular to each other. Along the direction perpendicular to the plate-shaped main body 401, the height of the first hole seat section 4031 is greater than the height of the second hole seat section 4032, and the second hole seat section 4032 is closer to the slot seat 402. Part of the mounting hole 403a is located in the first hole seat section 4031 and part is located in the second hole seat section 4032. The part of the mounting hole 403a located in the second hole seat section 4032 has an opening on the side away from the plate-shaped main body 401. This arrangement facilitates the smooth insertion of the damper rod 302 into the mounting hole 403a during assembly.

[0069] You can continue to refer to this. Figure 1 and combined Figure 7 understand, Figure 7 for Figure 1 A schematic diagram of the elastic element 60 of the medium-pressure proportional regulating valve 100.

[0070] The pressure proportional regulating valve 100 in this embodiment also includes an elastic element 60, which is specifically a torsion spring in this embodiment. The elastic element 60 includes a mating part and a pressing part. The mating part is connected to the damper rod 302, and the pressing part abuts against the damper body 301. Figure 7 As shown, the elastic element 60 includes a torsion spring body 601 and a first torsion spring arm 603 and a second torsion spring arm 602 located at both ends of the torsion spring body 601. The torsion spring body 601 includes a continuous multi-turn spring coil. At this time, the torsion spring body 601 is the mating part of the elastic element 60. The damper rod 302 passes through the torsion spring body 601. After assembly, the first torsion spring arm 603 contacts the damper seat 40, specifically abutting against the plate-shaped body 401 of the damper seat 40. The damper rod 302 is supported by the hole seat 403 and the limiting seat 404, and there is a gap between it and the plate-shaped body 401. The second torsion spring arm 602 contacts the damper body 301, specifically abutting against the side surface of the damper body 301 away from the flow channel 10c. At this time, the pressing part is the second torsion spring arm 602. Thus, with Figure 1From this perspective, when the push rod 20 is subjected to an external force, it can overcome the elastic force of the elastic element 60 to push the damper body 301 upward, and the flow channel 10c opens. When it is necessary to reduce the opening of the flow channel 10c, the push rod 20 moves downward, and the elastic force of the elastic element 60 can push the damper body 301 to move closer to the flow channel 10c, so as to more reliably cooperate with the push rod 20 to achieve reliable adjustment of the opening. It should be noted that this embodiment uses a torsion spring as an example for explanation. In fact, a similar elastic element 60 with a spring structure can also be used to achieve the same technical effect.

[0071] The installation process of the pressure proportional regulating valve 100 in the above embodiment is as follows:

[0072] The push rod 20 is pre-installed into the threaded hole of the valve body 200;

[0073] The elastic element 60 is installed with a clearance fit to the damper rod 302, and the second torsion spring arm 602 contacts the damper body 301. At this point, the damper component 30 and the elastic element 60 are installed.

[0074] Press the damper rod 302 into the first slot 402a of the damper seat 40, and install it with a clearance fit to the mounting hole 403a. The elastic element 60 contacts the plane of the plate-shaped main body 401 of the damper seat 40. At this point, the damper component 30, the elastic element 60, and the damper seat 40 are installed together. Figure 6 As shown;

[0075] The damper seat 40 and the valve core 10 are positioned and assembled by the positioning pin 405 and the connecting seat 406 on the damper seat 40.

[0076] Rotate the damper component 30 and insert the damper insertion part 3012 of the damper body 301 into the flow channel 10c of the valve core 10. The two can be fitted with a clearance. Lock the fastening screw 50 to fix the damper seat 40 and the valve core 10 to the valve body 200. At this point, the entire pressure proportional regulating valve 100 is installed.

[0077] Please refer to Figure 8 , Figure 8 This is a schematic diagram of the pressure proportional regulating valve 100 in the second embodiment of this application.

[0078] In this embodiment, the pressure proportional regulating valve 100 can also be installed in the gas proportional regulating device 1000 (shown in...). Figure 8 The outlet position is used to regulate the outlet pressure. The pressure proportional regulating valve 100 in the second embodiment has a basically the same structure as the pressure proportional regulating valve 100 in the first embodiment, except that the specific cooperation between the damper seat 40 and the damper component 30 is adjusted. The pressure proportional regulating valve 100 in the second embodiment includes a damper seat 40, a damper component 30, a push rod 20, and a valve core 10. Each part will be described in turn below.

[0079] Please read first. Figure 9 , Figure 9 for Figure 8 A schematic diagram of the valve core 10 of the medium pressure proportional regulating valve 100.

[0080] like Figure 9 As shown, the valve core 10 is provided with a flow channel 10c, which extends through the valve core 10 along its thickness direction. In this embodiment, the valve core 10 is also provided with an assembly hole 10d, which can be used to install a differential pressure valve. That is, the valve core 10 serves as a component of the pressure proportional regulating valve 100 and can also be used to install other components, so as to achieve integration and full utilization of space. This will not be discussed in detail.

[0081] Please continue to refer to this. Figure 10 understand, Figure 10 for Figure 8 A schematic diagram of the damper component 30 of the medium-pressure proportional regulating valve 100.

[0082] The damper component 30 in this embodiment includes a damper body 301, which can be a plate-like structure or a... Figure 11 The concave shell-like structure shown is recessed towards the flow channel 10c. The shape of the damper body 301 is approximately matched with the shape of the flow channel 10c provided in the valve core 10. The damper body 301 can cover the flow channel 10c, thereby cutting off the flow channel 10c. When the pressure proportional regulating valve 100 is closed, the damper body 301 moves away from the flow channel 10c, which opens the flow channel 10c and the pressure proportional regulating valve 100 is opened.

[0083] In this embodiment, the damper body 301 also includes a damper insertion portion 3012 and a damper flange portion 3013. In the first embodiment, the damper insertion portion 3012 and the damper cover portion 3011 are two-layer integrated plate structures. In the second embodiment, when the flow channel 10c is cut off, the damper insertion portion 3012 is embedded in the flow channel 10c, and the periphery of the damper insertion portion 3012 can contact and cooperate with the corresponding wall of the flow channel 10c. The damper flange portion 3013 presses against the side surface of the valve core 10 facing the damper component 30. With this arrangement, the damper insertion portion 3012 and the damper cover portion 3011 combined can better seal the flow channel 10c.

[0084] Furthermore, in this embodiment, the flow channel 10c of the valve core 10 is approximately V-shaped (with an obtuse angle), matching the shape of the flow channel 10c. The shape of the damper body 301 is approximately the same as that of the flow channel 10c, also being V-shaped.

[0085] In addition, let's look at... Figures 11 to 13 , Figure 11 for Figure 8A schematic diagram of the damper seat 40 of the medium-pressure proportional regulating valve 100; Figure 12 for Figure 11 Another structural schematic diagram of stroke portal 40; Figure 13 for Figure 11 Stroke seat 40 and Figure 10 A schematic diagram of the assembly of the central damper component 30.

[0086] The damper seat 40 is used to mount the damper component 30. The damper seat 40 and the valve core 10 are fixedly connected or limitedly connected, which facilitates the disassembly and processing of the damper seat 40 and the valve core 10. In this embodiment, the damper seat 40 is fixedly and detachably connected to the valve core 10, such as... Figure 9 As shown, the valve core 10 is provided with a positioning hole 10b and a first connecting hole 10a. Looking further... Figure 12 The damper seat 40 also includes a connecting seat 406, which has a second connecting hole 406a. The connecting seat 406 and the valve core 10 are connected by fastening screws 50 inserted into the first connecting hole 10a and the second connecting hole 406a. The connection is simple and reliable. At least one of the first connecting hole 10a and the second connecting hole 406a can be a threaded hole that matches the fastening screw 50. Of course, the damper seat 40 and the valve core 10 can also be connected and fixed by other means, such as snap-fit or pin-fit. It should be noted that the fastening screw 50 can not only connect the valve core 10 and the damper seat 40, but can also be inserted into the valve body 200 to directly fasten both the valve core 10 and the damper seat 40 to the valve body 200. In this case, the valve body 200 can be provided with threaded holes that mate with the fastening screw 50. The first connecting hole 10a and the second connecting hole 406a can be threaded holes or smooth holes.

[0087] At the same time, the damper seat 40 also includes a positioning post 405, such as Figure 12 As shown, the positioning pin 405 can be inserted into the positioning hole 10b of the valve core 10. During assembly, the positioning pin 405 can be inserted into the positioning hole 10b for positioning first, and then the fastening screw 50 can be inserted into the first connecting hole 10a and the second connecting hole 406a for threaded connection and fixation. The positioning hole 10b is set for pre-positioning, which facilitates the alignment of the first connecting hole 10a and the second connecting hole 406a. On the other hand, the positioning pin 405 itself can also play a connecting role. It can be seen that this structure makes the assembly of the damper seat 40 and the valve core 10 faster and more reliable.

[0088] Furthermore, the damper seat 40 in the second embodiment also includes a snap-fit 408. Figure 9 The valve core 10 is also provided with a snap-fit hole 10e, and the snap-fit 408 of the damper seat 40 is also snapped into the snap-fit hole 10e. In this way, the connection between the valve core 10 and the damper seat 40 is more reliable.

[0089] It is worth noting that the damper component 30 and damper seat 40 in the second embodiment are also rotatably connected. The push rod 20 of the pressure proportional regulating valve 100 can push the damper component 30 to rotate around the damper seat 40. When the damper component 30 rotates, it can adjust the opening of the flow channel 10c. The specific principle of the push rod 20 is the same as in the first embodiment, and will not be repeated here.

[0090] like Figure 10 As shown, the damper component 30 includes a damper body 301 and a damper rod 302. The damper body 301 is used to cooperate with the flow channel 10c, and the damper rod 302 is used to cooperate with the damper seat 40 to achieve a rotatable connection. Specifically, the damper seat 40 is provided with a mounting groove 409a, and the damper rod 302 can be inserted into the mounting groove 409a of the damper seat 40 to achieve a rotatable connection with the damper seat 40.

[0091] Specifically, one end of the damper body 301 is connected to the damper rod 302. It can be an integral part of the damper rod 302, or it can be separately set and then fixedly connected. Figure 13 The damper body 301 is connected to the damper rod 302 via a connecting part 303. For example... Figure 12 As shown, the damper seat 40 includes a damper seat body 409, and the damper seat body 409 and the connecting seat 406 can be separately or integrally arranged. The damper seat body 409 is provided with a mounting groove 409a, into which the damper rod 302 is inserted for rotatable connection with the damper seat 40. It can be seen that the mounting groove 409a facilitates the damper rod 302 to be directly inserted into the mounting groove 409a, making assembly convenient. In this embodiment, the damper rod 302 can also be inserted into the mounting hole, but it is more convenient to assemble by inserting it into the mounting groove 409a. When the damper seat 40 is installed into the valve core 10, the damper rod 302 is located between the valve core 10 and the damper seat 40 and will not detach from the mounting groove 409a.

[0092] In the second embodiment, the damper seat 40 further has a second slot 409b, and the damper component 30 includes a connecting portion 303, which connects the damper rod 302 and the damper body portion 301. At least a portion of the connecting portion 303 is located within the second slot 409b. Figure 13 As shown, this strengthens the limiting effect on the damper component 30. The width of the second connecting part 303 is smaller than the width of the damper body part 301, so it can be inserted into the second slot 409b, which indirectly limits the damper body part 301 without interfering with the free rotation of the damper body part 301.

[0093] You can continue to refer to this. Figure 8 and combined Figure 14 , 15 understand, Figure 14 for Figure 1 A schematic diagram of the elastic element 60 of the medium-pressure proportional regulating valve 100; Figure 15 for Figure 1 Cross-sectional schematic diagram of medium pressure proportional regulating valve 100.

[0094] In this embodiment, the pressure proportional regulating valve 100 also includes an elastic element 60, which is specifically a shaped spring in this embodiment. The elastic element 60 includes a mating part and a pressing part. In the second embodiment, the mating part of the elastic element 60 is directly connected to the limiting post on the damper seat 40, and the pressing part abuts against the damper body 301. Figure 14 As shown, the elastic element 60 includes an elastic positioning ring 605, an elastic rod 604, and an elastic hook 606. The elastic positioning ring 605 is a mating part, which is sleeved on the limiting post 407 provided on the damper seat 40. One end of the elastic rod 604 is connected to the elastic positioning ring 605, and the other end of the elastic rod 604 is connected to the elastic hook 606. The three parts can be an integral structure, such as being formed by bending a single rod. In the second embodiment, the elastic hook 606 is the pressing part of the elastic element 60. The elastic hook 606 has a bent portion 6061, which presses against the damper body 301 to ensure the pressing effect.

[0095] like Figure 12 As shown, the bottom of the second slot 409b is provided with a first limiting groove 409c. Part of the elastic rod 604 is located in the first limiting groove 409c. The first limiting groove 409c can limit the elastic rod 604, preventing the elastic element 60 from twisting or swinging, and ensuring the pressing effect on the damper body 301. The bottom of the second slot 409b can also be provided with a groove 409e to reduce contact with the connecting part 303 and facilitate the smooth rotation of the damper component 30.

[0096] Additionally, please continue to refer to Figure 12 In this embodiment, the damper rod 302 and the limiting post 407 are located on different sides of the damper seat 40. The mounting groove 409a for limiting the damper rod 302 is set towards the valve core 10, and the limiting post 407 is located on the side of the damper seat 40 away from the valve core 10. The damper seat body 409 can be provided with a through hole 409d, and the damper rod 302 can be provided with a notch 302a. Then, the elastic rod 604 of the elastic element 60 is located in the first limiting groove 409c, and the elastic rod 604 can pass through the through hole 409d and the notch 302a. The elastic positioning ring 605 can be sleeved on the limiting post 407 on the other side. Thus, the damper seat 40, the portion of the elastic rod 604, the damper rod 302, and the valve core 10 are arranged in sequence. Figure 15As shown, this arrangement makes the bottom wall of the first limiting groove 409c the force fulcrum A of the elastic member 60. When the damper component 30 rotates upward under the action of external force, the elastic hook 606 drives the elastic rod 604 to rotate upward around the force fulcrum A. After the external force is removed, the elastic rod 604 will rotate downward around the force fulcrum A, so as to drive the damper component 40 to press against the flow channel 10c of the valve core 10 again. The first limiting groove 409c can be gradually widened in the direction close to the elastic hook 606 to provide space for the elastic rod 604 to rotate.

[0097] like Figure 10 As shown, the damper body 301 of the damper component 30 is also provided with a second limiting groove 30a. As mentioned above, the damper body 301 is recessed, and opposing vertical plates 3014 can be provided on the bottom wall of the recessed cavity of the damper body 301, with the second limiting groove 30a defined between the two vertical plates 3014. Of course, the second limiting groove 30a can also have other structural forms, such as forming the second limiting groove 30a directly on the wall of the damper body 301, but comparatively... Figure 10 The configuration does not require reducing the thickness of the damper body 301, so as to ensure that the damper body 301 has sufficient strength to reliably block the flow channel 10c of the valve core 10.

[0098] In this way, when the push rod 20 is subjected to external force, it can overcome the elastic force of the elastic element 60 to push the damper body 301 upward, and the flow channel 10c opens. When it is necessary to reduce the opening of the flow channel 10c, the push rod 20 moves downward, and the elastic force of the elastic element 60 can push the damper body 301 to move closer to the flow channel 10c, so as to more reliably cooperate with the push rod 20 to achieve reliable adjustment of the opening.

[0099] The installation process of the pressure proportional regulating valve 100 in the above embodiment is as follows:

[0100] The push rod 20 is pre-installed into the threaded hole of the valve body 200;

[0101] The elastic element 60 is assembled with the damper seat 40. The elastic positioning ring 605 of the elastic element 60 is sleeved on the limiting post 407. Part of the elastic rod 604 can be located in the first limiting groove 409b. The spring positioning ring 605 can be pressed to contact the surface of the connecting seat 406.

[0102] The damper rod 302 of the damper component 30 and the mounting groove 409a of the damper seat 40 are engaged, and the elastic hook 606 is pressed into the second limiting groove 30a. At this point, the damper component 30, the elastic element 60, and the damper seat 40 are installed together.

[0103] The damper seat 40 and valve core 10 are positioned and assembled by the buckle on the damper seat 40, the positioning post 405 and the connecting seat 406.

[0104] Rotate the damper component 30 and insert the damper insertion part 3012 of the damper body 301 into the flow channel 10c of the valve core 10. The two can be fitted with a clearance. Lock the fastening screw 50 to fix the damper seat 40 and the valve core 10 to the valve body 200. At this point, the entire pressure proportional regulating valve 100 is installed.

[0105] Please refer to Figure 16 , Figure 16 This is a schematic diagram of the structure of a gas proportional regulation device 1000 in an embodiment of this application.

[0106] like Figure 16 As shown, the gas proportional regulating device 1000 includes a valve body 200, which has a valve body inlet 201, a main valve port 202, a secondary valve port 203, a differential pressure valve port 206, and a pressure regulating valve flow channel 10c. A first solenoid valve 3001, a second solenoid valve 3002, and a differential pressure valve 400 are also installed on the valve body 200. When the first solenoid valve 3001 and the second solenoid valve 3002 are energized, the main valve port 202 and the secondary valve port 203 open, and gas enters the main valve port 202 from the valve body inlet 201 and flows into the inner cavity of the valve body 200. Before the differential pressure valve port 206 opens, the gas accumulates in the inner cavity of the valve body 200. Bypass gas flows through the auxiliary valve port 203 and the flow channel 205 of the pressure regulating valve into the back cavity 4001 of the differential pressure valve. The diaphragm 4002 of the differential pressure valve 400 moves upward under the pressure of the gas, pushing the valve stem 4003 upward until the differential pressure valve port 206 opens. The gas flows through the differential pressure valve port 206 and the cavity 207 to the pressure proportional regulating valve 100 at the outlet. The pressure proportional regulating valve 100 is the same as the pressure proportional regulating valve 100 mentioned in the above embodiments. After being throttled by the pressure proportional regulating device, the gas flows out from the outlet of the valve body 200 and enters the negative pressure equipment. The gas mixes with air and then enters the combustion equipment for combustion. The gas proportional regulating device 1000 has the same technical effects as the pressure proportional regulating valve 100 in any of the above embodiments, and will not be described again.

[0107] The outlet of the gas proportional regulator 1000 is connected to the negative pressure equipment of the entire system. The negative pressure equipment, together with atmospheric pressure, drives the elastic deformation of the pressure regulating diaphragm 501, changing the air intake of the flow channel 205 and the pressure of the differential pressure valve back chamber 4001, thereby changing the opening of the differential pressure valve 400 and controlling the pressure regulating valve 500 to regulate the gas pressure (flow rate). When the negative pressure equipment is operating at its lowest negative pressure, the pressure regulating valve 500 is adjusted to determine the minimum outlet pressure of the gas proportional regulator 1000. When the negative pressure equipment is operating at its highest negative pressure, the pressure proportional regulating valve 100 is adjusted to determine the maximum outlet pressure of the gas proportional regulator 1000. The pressure regulating valve 500 and the pressure proportional regulating valve 100 together achieve the proportional regulation of the outlet pressure to adapt to different models. When the inlet pressure of valve body 200 changes, because channel 204 is connected to pressure regulating diaphragm 501, the outlet pressure flows into pressure chamber 209 of pressure regulating diaphragm 501 through channel 204. The pressure is fed back through the area of pressure regulating diaphragm 501, causing pressure regulating valve 500 to automatically adjust valve opening to maintain the original outlet pressure. This phenomenon is gas pressure stabilization. In summary, this gas proportional regulating device 1000 has functions such as gas channel safety control, airtightness, pressure regulation, and pressure stabilization.

[0108] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A pressure proportional regulating valve, characterized in that, include: Airlock seat (40); A damper assembly (30) is rotatably connected to the damper seat (40); A push rod (20) is capable of pushing the damper component (30) to rotate around the damper seat (40); The valve core (10) is provided with a flow channel (10c). The damper component (30) can rotate relative to the valve core (10) to adjust the opening of the flow channel (10c). The damper seat (40) is fixedly connected or limitedly connected to the valve core (10). The elastic element (60) includes a pressing part, and the damper component (30) includes a damper body part (301). The pressing part abuts against the damper body part (301). The damper body part (301) is blocked by the elastic force of the elastic element, or the push rod (20) can push the damper body part (301) away from the flow channel (10c) under the action of external force.

2. The pressure proportional regulating valve according to claim 1, characterized in that, The elastic element includes a mating part, and the damper component (30) includes a damper rod (302), the mating part being connected to the damper rod (302).

3. The pressure proportional regulating valve according to claim 2, characterized in that, The damper seat (40) includes a hole seat (403) having a mounting hole (403a), and the damper rod (302) is inserted into the mounting hole (403a) to be rotatably connected to the damper seat (40); The damper seat (40) also includes a slot seat (402), the slot seat (402) having a first slot (402a), the first slot (402a) being a through slot, and a portion of the damper rod (302) being located within the first slot (402a).

4. The pressure proportional regulating valve according to claim 3, characterized in that, The damper seat (40) includes a plate-shaped main body (401), the hole seat (403) and the slot seat (402) both protrude from the same side of the plate-shaped main body (401), the slot seat (402) and the hole seat (403) are distributed along a first direction, which is parallel to the axial direction of the damper rod (302).

5. The pressure proportional regulating valve according to claim 4, characterized in that, The damper seat (40) includes a first limiting structure (4041) and a second limiting structure (4031), and the damper rod (302) is axially limited between the first limiting structure (4041) and the second limiting structure (4031).

6. The pressure proportional regulating valve according to claim 5, characterized in that, The damper seat (40) also includes a limiting seat (404) protruding from the plate-shaped main body (401). The limiting seat (404), the slot seat (402), and the hole seat (403) are distributed sequentially along the first direction. The limiting seat (404) is provided with the first limiting structure (4041), and the hole seat (403) is provided with the second limiting structure (4031).

7. The pressure proportional regulating valve according to claim 6, characterized in that, The limiting seat (404) is provided with a limiting groove (404a), the extending direction of the limiting groove (404a) is parallel to the first direction, and a portion of the damper rod (302) is located within the limiting groove (404a).

8. The pressure proportional regulating valve according to claim 7, characterized in that, The damper component (30) includes a connecting part (303) that connects the damper rod (302) and the damper body (301). The side surface of the limiting seat (404) facing the slot seat (402) is the first limiting structure (4041), and the first limiting structure (4041) and the side surface of the connecting part (303) abut against each other.

9. The pressure proportional regulating valve according to any one of claims 3-8, characterized in that, The elastic element (60) includes a torsion spring, which includes a torsion spring body (601) and a first torsion spring arm (603) and a second torsion spring arm (602) located at both ends of the torsion spring body (601). The torsion spring body (601) is the mating part, and the second torsion spring arm (602) is the pressing part. The damper rod (302) passes through the torsion spring body (601), the first torsion spring arm (603) contacts the damper seat (40), and the second torsion spring arm (602) contacts the damper body (301).

10. The pressure proportional regulating valve according to claim 1, characterized in that, The elastic element (60) includes a mating part that is connected to the damper seat (40).

11. The pressure proportional regulating valve according to claim 10, characterized in that, The damper seat (40) has a mounting groove (409a), the damper rod (302) is inserted into the mounting groove (409a) to be rotatably connected to the damper seat (40), and the damper rod (302) is located between the damper seat (40) and the valve core (10); The damper seat (40) also has a second slot (409b); The damper component (30) includes a connecting part (303) that connects the damper rod (302) and the damper body (301), and at least a portion of the connecting part (303) is located in the second slot (409b).

12. The pressure proportional regulating valve according to claim 11, characterized in that, The bottom of the second slot (409b) is provided with a first limiting slot (409c); the damper seat (40) also includes a limiting post (407), the limiting post (407) and the damper rod (302) are located on different sides of the damper seat (40); The elastic element (60) includes an elastic positioning ring (605), an elastic rod (604), and an elastic hook (606). The elastic positioning ring (605) is the mating part and is sleeved on the limiting post (407). The elastic hook (606) is the pressing part, and the bent part (6061) of the elastic hook (606) presses against the damper body part (301). Part of the elastic rod (604) is located in the first limiting groove (409c).

13. The pressure proportional regulating valve according to claim 12, characterized in that, The damper body (301) includes a second limiting groove (30a), and at least a portion of the elastic hook (606) is located within the second limiting groove (30a).

14. The pressure proportional regulating valve according to claim 11, characterized in that, The damper seat (40) is provided with a buckle (408), and the valve core (10) is provided with a buckle hole (10e). The buckle (408) and the buckle hole (10e) are snapped together.

15. The pressure proportional regulating valve according to any one of claims 1-8 and 10-14, characterized in that, The damper seat (40) includes a connecting seat (406), the connecting seat (406) is provided with a second connecting hole (406a), the valve core (10) is provided with a first connecting hole (10a), and the connecting seat (406) and the valve core (10) are connected by fastening screws (50) inserted into the first connecting hole (10a) and the second connecting hole (406a); The damper seat (40) also includes a positioning post (405), and the valve core (10) is provided with a positioning hole (10b), and the positioning post (405) is inserted into the positioning hole (10b).

16. A gas proportional regulating device, characterized in that, The outlet of the gas proportional regulating device is provided with a pressure proportional regulating valve (100) as described in any one of claims 1-15.