A combined two-stage multifunctional solenoid valve device

Abstract

The present invention discloses a combined two-stage multifunctional solenoid valve device, including a valve driving device for closing or opening a valve port, wherein the valve driving device includes a valve disk, a transmission rod, a first solenoid valve core and a second solenoid valve core. The transmission rod is driven upward by the first solenoid valve core to open a first-stage stroke at the valve port, and the transmission rod is driven to continue to move upward by the second solenoid valve core to open the valve disk in the first-stage stroke to the second-stage stroke. With the technical solution, the solenoid valve device realizes a flow switching function by adjusting the two-stage stroke of the valve disk, thereby realizing switching control of the gas flow rate, avoiding the risk of ignition and explosion caused by excessive instantaneous gas discharge, having good controllability, being safe and reliable to use, avoiding unnecessary waste of gas resources, meeting customers' requirements for multi-stage control of the gas flow rate, and having a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of gas solenoid valves, and in particular to a combined two-stage multifunctional solenoid valve device. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic automation components used to control fluids. They are actuators used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. They can be used in pipeline transportation systems such as steam pipelines, gas pipelines and natural gas pipelines, and are widely used in our daily lives.

[0003] In daily life and industrial production, the gas valve devices commonly used by people mostly adopt the direct-acting solenoid valve structure. This solenoid valve is mainly composed of an electromagnetic coil, a magnetic core and a valve core, and also includes a valve body with one or more holes, and a return spring between the valve body and the valve core. When the coil is energized or de-energized, the operation of the magnetic core drives the valve core to open or cut off the vent hole of the valve body, thereby opening or closing the solenoid valve. However, this direct-acting solenoid valve opens quickly after power is turned on, and can fully open the valve in a very short time, allowing the gas to instantly gush out of the valve, and the instantaneous exhaust volume is large. In some special places and equipment, there are safety hazards of ignition and explosion during ignition. Therefore, in actual use, only a damping regulator is installed on the solenoid valve. The damping regulator can control the opening speed of the valve core of the solenoid valve to achieve a slow opening effect. The opening stroke of the magnetic core and the valve core of the existing solenoid valve is fixed, that is, the opening distance of the solenoid valve cannot be adjusted after reaching the maximum. For some places with small gas flow supply, it will cause a waste of gas supply resources, which cannot meet the user's control requirements for the gas flow size and has poor applicability. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the solenoid valve in the prior art cannot be adjusted after the opening distance reaches the maximum, which cannot meet the user's control requirements for the gas flow rate, causes waste of gas supply resources, and has poor applicability. Thus, a combined two-stage multifunctional solenoid valve device is provided which can realize multi-stage regulation of gas flow, meet the user's control requirements for the gas flow rate, has a wide range of applications, and has good performance.

[0005] In order to solve the above technical problems, the present invention provides a combined two-stage multifunctional solenoid valve device, comprising a valve body, a ventilation pipeline arranged in the valve body, and at least one valve port arranged in the ventilation pipeline, and at least one valve driving device for closing or opening the valve port, wherein the valve driving device comprises:

[0006] A valve assembly, comprising a valve disc disposed at the valve port and capable of opening or closing the valve disc, and a transmission rod fixedly connected to the valve disc;

[0007] A first electromagnetic valve core is movably connected to the transmission rod in the valve body, and when the first electromagnetic valve core moves upward along the axial direction of the transmission rod, it drives the transmission rod to move away from the valve port, and drives the valve disc to open a first-stage stroke at the valve port;

[0008] The second solenoid valve core is movably connected to the transmission rod relative to the first solenoid valve core. When the second solenoid valve core moves upward along the axial direction of the transmission rod, it drives the transmission rod to move away from the valve port, and drives the valve disc to open from the initial stroke or the first-stage stroke at the valve port to the second-stage stroke. The opening distance of the valve disc to reach the second-stage stroke is greater than the opening distance to reach the first-stage stroke.

[0009] As a preferred embodiment, the valve body is provided with a first cavity and a second cavity aligned along the axial direction of the transmission rod, the first solenoid valve core and the second solenoid valve core are movably accommodated in the first cavity and the second cavity respectively, and the transmission rod is movably extended between the first solenoid valve core and the second solenoid valve core; the first solenoid valve core and the second solenoid valve core can move upward along the axial direction of the transmission rod when the power is on, and can move back along the axial direction of the transmission rod when the power is off.

[0010] As a preferred solution, a limited transmission structure is respectively arranged between the first solenoid valve core and the second solenoid valve core and the transmission rod, and the first solenoid valve core or the second solenoid valve core drives the transmission rod to move synchronously through the limited transmission structure when moving upward; a closing spring is arranged between the valve body and the valve disk, and the closing spring drives the valve disk to close at the valve port when the first solenoid valve core and / or the second solenoid valve core is powered off.

[0011] As a preferred embodiment, the limit transmission structure includes: limit recesses respectively arranged on the upper ends of the first solenoid valve core and the second solenoid valve core, and a limit clamping ring fixedly sleeved on the transmission rod and suitable for being accommodated in the limit recess, and the limit recess pushes the limit clamping ring when the first solenoid valve core or the second solenoid valve core moves upward.

[0012] As a preferred embodiment, the valve body is provided with a first flow limiting structure and a second flow limiting structure respectively connected to the first solenoid valve core and the second solenoid valve core, and the first flow limiting structure and the second flow limiting structure are respectively used to adjust the opening distance of the valve disc in the first stage stroke and the second stage stroke.

[0013] As a preferred solution, the first current limiting structure includes:

[0014] A first rotating disk is rotatably disposed on the valve body;

[0015] A limiting rod, movably disposed in the first cavity along the axial direction of the transmission rod, with a lower end thereof disposed opposite to the first electromagnetic valve core;

[0016] The adjusting member is movably connected between the first rotating disk and the valve body through a threaded structure and is located at the upper port of the first cavity. The upper end of the limit rod is abutted against the adjusting member. When the first rotating disk rotates, the adjusting member is driven to reciprocate along the axial direction of the transmission rod, so that the adjusting member pushes the limit rod to move toward the direction close to the first solenoid valve core.

[0017] As a preferred embodiment, the adjusting member is a threaded adjusting ring driven by the first rotating disk, the valve body is provided with a threaded structure cooperating with the threaded adjusting ring, and one end of the limiting rod extends out of the first cavity and abuts against the lower end surface of the threaded adjusting ring.

[0018] As a preferred solution, two limit rods are provided in parallel in the first cavity, two guide grooves are provided in the first cavity to guide the movement of the two limit rods, and a double sealing ring structure is provided between the limit rod and the guide groove.

[0019] As a preferred solution, the second current limiting structure includes:

[0020] A second rotating disk is rotatably disposed at an upper port of the second cavity;

[0021] An adjusting screw, threadedly connected to a mounting through hole formed at the upper end of the second cavity, wherein the adjusting screw is a hollow structure, one end of which is provided with an arc protrusion, and the other end is arranged opposite to the second solenoid valve core or the transmission rod;

[0022] The semi-axle structure is driven by the second rotating disk and can be rotatably connected to the mounting through hole. When the semi-axle structure rotates, it pushes against the arc protrusion to drive the adjusting screw to reciprocate along the axial direction of the transmission rod.

[0023] As a preferred embodiment, a damping adjuster for controlling the slow upward movement of the transmission rod is installed on the top of the valve body, and the damping adjuster includes a damping rod passing through the mounting hole and extending into the adjusting screw cavity, and the top end of the transmission rod is provided with a top rod structure extending into the adjusting screw cavity and abutting against the damping rod.

[0024] As a preferred embodiment, two valve ports and two valve disks are arranged side by side on the ventilation pipeline, the first solenoid valve core and the second solenoid valve core are connected to one of the valve disks through a transmission rod, the valve driving device includes a third solenoid valve core connected to the other valve disk, and a driving spring that passes through the third solenoid valve core and connects to the other valve disk, and the driving spring drives the other valve disk to move away from the valve port when the third solenoid valve core moves up.

[0025] The technical solution of the present invention has the following advantages compared with the prior art:

[0026] 1. The combined two-stage multifunctional solenoid valve device provided by the present invention, when the first solenoid valve core is energized to work, the first solenoid valve core drives the transmission rod and drives the valve disc to move upward, so that the valve disc opens the first stage stroke at the valve port. At this time, the valve disc is not fully opened to allow a small flow of gas to pass through. When the second solenoid valve core is energized to work, the second solenoid valve core drives the transmission rod to continue to move upward, thereby opening the valve disc in the first stage stroke to the second stage stroke. At this time, the valve disc is opened to the maximum extent at the valve port position. Of course, the valve disc can also be directly driven by the second solenoid valve core to open from the initial stroke to the maximum second stage stroke. By adopting this technical solution, the solenoid valve The device realizes the flow switching function by adjusting the two-stage stroke of the control valve disc. The valve disc in the first stage stroke can only open a part of the total flow to meet the demand of small-fire gas supply, and the valve disc in the second stage stroke can open the total flow to meet the demand of large-fire gas supply, thereby realizing the switching control of the gas flow rate and avoiding the risk of ignition and explosion due to excessive gas discharge in an instant. The device has good controllability and is safe and reliable to use, avoiding unnecessary waste of gas resources, and can meet customers' requirements for multi-stage control of gas flow rate. It can be well applied to some gas combustion equipment, has a wide range of applications, and improves the performance of the product.

[0027] 2. The combined two-stage multifunctional solenoid valve device provided by the present invention regulates the opening or closing of the control valve disk through the lifting and lowering movement of the first solenoid valve core and the second solenoid valve core. When the first solenoid valve core and the second solenoid valve core move upward, they form a linkage relationship with the transmission rod through the limit transmission structure, which plays a role in transmitting motion and force, thereby driving the transmission rod and the valve disk to move to the first stage stroke and the second stage stroke, thereby realizing the opening of the first and second stage valves. When the first solenoid valve core and the second solenoid valve core are powered off, the driving force on the transmission rod is lost. The valve disk moves to resist the valve port under the action of the closing spring and drives the transmission rod to move downward. During the downward movement of the transmission rod, the first solenoid valve core and the second solenoid valve core are driven to reset through the limit transmission structure, thereby realizing the closing of the first and second stage valves. The design is reasonable and the transmission is reliable.

[0028] 3. In the combined two-stage multifunctional solenoid valve device provided by the present invention, the first rotating disk drives the threaded adjustment ring to rotate when it rotates, and the threaded adjustment ring can move back and forth along the axial direction of the transmission rod through the threaded structure, and will push the limit rod downward during the downward movement, thereby reducing the stroke gap between the limit rod and the first solenoid valve core, thereby reducing the opening distance of the valve disk within the first-stage stroke, and after driving the threaded adjustment ring to move upward, the limit rod can be moved up again under the pushing action of the first solenoid valve core. The advantage of such a design is that the first-stage stroke size of the valve disk is determined by the operating stroke of the first solenoid valve core. Therefore, the opening distance of the valve disk is adjusted by adjusting the movement stroke size of the first solenoid valve core, thereby controlling the flow size of the valve disk within the first-stage stroke, thereby achieving the purpose of adjustable opening distance of the first-stage valve, and can be freely adjusted according to user needs, with higher control accuracy, practicality and reliability.

[0029] 4. In the combined two-stage multifunctional solenoid valve device provided by the present invention, the second rotating disk will drive the half-axis structure to rotate in the installation through hole when it rotates, and the half-axis structure drives the adjusting screw to rotate by pushing the arc protrusion, and the adjusting screw moves up and down under the action of the threaded structure, so that the other end moves close to the second solenoid valve core or the transmission rod. In this way, the movement gap between the adjusting screw and the second solenoid valve core or the transmission rod can be adjusted and controlled to limit the stroke distance of the upward movement of the second solenoid valve core or the transmission rod, so that the second-stage stroke size of the valve disk can be adjusted, thereby controlling the flow size of the valve disk within the second-stage stroke, achieving the purpose of adjustable opening distance of the secondary valve, and can be freely adjusted according to user needs, the adjustment operation is convenient, and it is practical and reliable.

[0030] 5. In the combined two-stage multifunctional solenoid valve device provided by the present invention, the push rod structure pushes against the damping rod when the transmission rod moves upward, and the damping rod is used to apply a damping effect to the transmission rod, thereby slowing down the upward speed of the transmission rod. This structural setting can adjust the movement speed of the control valve disk when opening through the damping regulator, and has a slow opening effect on the valve disk closed on the valve port, which can avoid the risk of explosion caused by excessive instantaneous gas discharge, thereby ensuring the safety and reliability of the use of the solenoid valve device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the planar structure of a combined two-stage multifunctional solenoid valve device provided by the present invention;

[0033] Figure 2 It is a partial enlarged structural schematic diagram of the first solenoid valve core and the first current limiting structure of the present invention;

[0034] Figure 3 for Figure 2 An enlarged structural diagram of the limit transmission structure shown;

[0035] Figure 4 It is a partial enlarged structural schematic diagram of the second solenoid valve core and the second current limiting structure of the present invention;

[0036] Figure 5 It is a schematic diagram of the split structure of the second current limiting structure of the present invention;

[0037] Explanation of the accompanying drawings: 1-valve body, 10-ventilation pipeline, 11-valve port, 12-first cavity, 13-second cavity, 14-mounting hole, 2-valve assembly, 21-valve disc, 22-transmission rod, 221-top rod structure, 23-closing spring, 3-first solenoid valve core, 4-second solenoid valve core, 5-limiting transmission structure, 51-limiting recess, 52-limiting clamping ring, 6-third solenoid valve core, 61-driving spring, 7-first flow limiting structure, 71-first rotating disk, 72-limiting rod, 73-adjusting member, 8-second flow limiting structure, 81-second rotating disk, 82-adjusting screw, 83-semi-shaft structure, 84-arc protrusion, 9-damping adjuster, 91-damping rod. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms “first”, “second” and “third” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Example 1

[0043] The present embodiment is described in detail below with reference to the accompanying drawings:

[0044] This embodiment provides Figure 1-5 A combined two-stage multifunctional solenoid valve device is shown, comprising a valve body 1, a ventilation pipeline 10 arranged in the valve body 1, and at least one valve port 11 arranged in the ventilation pipeline 10, and at least one valve driving device for closing or opening the valve port, characterized in that the valve driving device comprises:

[0045] The valve assembly 2 includes a valve disc 21 disposed at the valve port 11 and capable of opening or closing the valve disc 21, and a transmission rod 22 fixedly connected to the valve disc 21;

[0046] The first electromagnetic valve core 3 is movably connected to the transmission rod 22 in the valve body 1. When the first electromagnetic valve core 3 moves upward along the axial direction of the transmission rod 22, it drives the transmission rod to move away from the valve port 11, and drives the valve disc 21 to open the first stage stroke at the valve port;

[0047] The second solenoid valve core 4 is movably connected to the transmission rod 22 relative to the first solenoid valve core 3. When the second solenoid valve core 4 moves upward along the axial direction of the transmission rod 22, it drives the transmission rod to move away from the valve port 11, and drives the valve disc 21 to open from the initial stroke or the first stage stroke at the valve port to the second stage stroke. The opening distance of the valve disc 21 to the second stage stroke is greater than the opening distance to the first stage stroke.

[0048] In the above embodiment, when the first electromagnetic valve core is powered on, the first electromagnetic valve core 3 drives the transmission rod 22 and drives the valve disc 21 to move upward, so that the valve disc 21 opens the first stage stroke at the valve port. At this time, the valve disc 21 is not fully opened to allow a small flow of gas to pass through. When the second electromagnetic valve core 4 is powered on, the second electromagnetic valve core 4 drives the transmission rod 22 to continue to move upward, thereby opening the valve disc 21 in the first stage stroke to the second stage stroke. At this time, the valve disc 21 is opened to the maximum extent at the valve port position. Of course, the valve disc can also be directly driven by the second electromagnetic valve core to open from the initial stroke to the maximum second stage stroke. By adopting this technical solution, The solenoid valve device realizes the flow switching function by adjusting and controlling the two-stage stroke of the valve disc 21. The valve disc in the first stage stroke can only open a part of the total flow to meet the demand of small-fire gas supply, and the valve disc in the second stage stroke can open all of the total flow to meet the demand of large-fire gas supply, thereby realizing switching control of the gas flow rate and avoiding the risk of ignition and explosion due to excessive instantaneous gas discharge. It has good controllability and is safe and reliable to use, avoiding unnecessary waste of gas resources, and can meet customers' requirements for multi-stage control of gas flow rate. It can be well applied to some gas combustion equipment, has a wide range of applications, and improves the performance of the product.

[0049] Combination Figure 1-5 As shown, the valve body 1 is provided with a first cavity 12 and a second cavity 13 which are axially aligned along the transmission rod 22, the first solenoid valve core 3 and the second solenoid valve core 4 are movably accommodated in the first cavity 12 and the second cavity 13 respectively, and the transmission rod 22 is movably extended between the first solenoid valve core 3 and the second solenoid valve core 4, wherein two electromagnetic coils are respectively sleeved on the outside of the first cavity 12 and the second cavity 13, and the two electromagnetic coils generate electromagnetic force for driving the first solenoid valve core 3 and the second solenoid valve core 4 to move when energized. It can be seen that the first solenoid valve core 3 and the second solenoid valve core 4 can move upward along the axial direction of the transmission rod 22 when energized, and can move back to the original position along the axial direction of the transmission rod 22 when energized.

[0050] As a preferred embodiment, the first solenoid valve core 3 and the second solenoid valve core 4 are powered on successively to work, and a limited position transmission structure 5 is respectively arranged between the first solenoid valve core 3 and the second solenoid valve core 4 and the transmission rod 22. When the first solenoid valve core 3 or the second solenoid valve core 4 moves upward, the transmission rod 22 is driven to move synchronously through the limited position transmission structure 5. For example, when the first solenoid valve core 3 moves upward, it first drives the transmission rod to move upward to the first stage stroke, and then, when the second solenoid valve core 4 moves upward, it drives the transmission rod to move upward to the second stage stroke. Figure 1-2A closing spring 23 is provided between the valve body 1 and the valve disc 21. The closing spring 23 drives the valve disc 21 to close at the valve port when the first solenoid valve core 3 and / or the second solenoid valve core 4 is powered off. This structural setting adjusts and controls the opening or closing of the valve disc 21 through the lifting and lowering movement of the first solenoid valve core 3 and the second solenoid valve core 4. When the first solenoid valve core 3 and the second solenoid valve core 4 move upward, they form a linkage relationship with the transmission rod 22 through the limit transmission structure 5, play a role in transmitting motion and force, and then drive the transmission rod 22 and the valve disc 21 to move to the first and second strokes, so as to realize the opening of the first and second stage valves. When the first solenoid valve core 3 and the second solenoid valve core 4 are powered off, the driving force on the transmission rod is lost. The valve disc 21 moves to resist the valve port under the action of the closing spring 23, and drives the transmission rod 22 to move downward. During the downward movement, the transmission rod 22 drives the first solenoid valve core and the second solenoid valve core to reset through the limit transmission structure, so as to realize the closing of the first and second stage valves. The design is reasonable and the transmission is reliable.

[0051] As a specific structural setting, the limit transmission structure 5 includes: a limit recess 51 respectively arranged on the upper end of the first solenoid valve core 3 and the second solenoid valve core 4, and a limit clamping ring 52 fixedly sleeved on the transmission rod 22 and suitable for being accommodated in the limit recess 51. The limit recess 51 pushes the limit clamping ring 52 when the first solenoid valve core 3 or the second solenoid valve core 4 moves upward, thereby driving the transmission rod to move upward along its axial direction. In this embodiment, the transmission rod is driven by the first solenoid valve core 3 and the second solenoid valve core 4 to move upward, refer to Figure 2-3 When the first solenoid valve core 3 moves upward relative to the second solenoid valve core 4, it first drives the transmission rod 22 to move upward to the first stage stroke. Then, when the second solenoid valve core 4 moves upward relative to the first solenoid valve core 3, it drives the transmission rod 22 to move upward to the second stage stroke, thereby realizing the two-stage stroke opening of the valve.

[0052] In this embodiment, in order to adjust and control the flow rate of the valve disc within the first and second stage travel ranges, as shown in FIG. Figure 1 As shown, the valve body 1 is provided with a first flow limiting structure 7 and a second flow limiting structure 9 respectively connected to the first solenoid valve core 3 and the second solenoid valve core 4, and the first flow limiting structure 7 and the second flow limiting structure 8 are respectively used to adjust the opening distance of the valve disc 21 in the first stage stroke and the second stage stroke.

[0053] Combine the following Figure 1-3 The specific setting method of the first current limiting structure is described in detail:

[0054] The first flow limiting structure 7 includes a first rotating disk 71, a limiting rod 72 and an adjusting member 73; the first rotating disk 71 is rotatably arranged on the valve body 1; the limiting rod 72 is movably arranged in the first cavity 12 along the axial direction of the transmission rod 22, and its lower end is arranged opposite to the first electromagnetic valve core 3; the adjusting member 73 is movably connected between the first rotating disk 71 and the valve body 1 through a threaded structure, and is located at the upper end of the first cavity 13, and the upper end of the limiting rod 72 is abutted against the adjusting member 73. When the first rotating disk 71 rotates, the adjusting member 73 is driven to reciprocate along the axial direction of the transmission rod, so that the adjusting member 73 pushes the limiting rod 72 to move toward the direction close to the first electromagnetic valve core 3. As a preferred embodiment, the adjusting member 73 is a threaded adjustment ring driven by the first rotating disk 71, and a threaded structure cooperating with the threaded adjustment ring is provided on the valve body 1. One end of the limiting rod 72 extends out of the first cavity The body 12 cooperates with and abuts against the lower end surface of the threaded adjustment ring. It can be known from the above structure that the first rotating disk 71 drives the threaded adjustment ring to rotate when it rotates, and the threaded adjustment ring can reciprocate along the axial direction of the transmission rod through the threaded structure. During the downward movement, it will push the limit rod 72 downward, thereby reducing the stroke gap between the limit rod and the first electromagnetic valve core, thereby reducing the opening distance of the valve disk within the first stage stroke, and after driving the threaded adjustment ring to move upward, the limit rod 72 can be moved up again under the pushing action of the first electromagnetic valve core. The advantage of such a design is that the first stage stroke size of the valve disk 21 is determined by the running stroke of the first electromagnetic valve core 3. Therefore, the opening distance of the valve disk 21 is adjusted by adjusting the movement stroke size of the first electromagnetic valve core 3, thereby controlling the flow size of the valve disk 21 within the first stage stroke, achieving the purpose of adjustable opening distance of the first stage valve, and can be freely adjusted according to user needs, with higher control accuracy and practicality and reliability.

[0055] like Figure 2 As shown, two limit rods 72 are provided in parallel in the first cavity 12, and two guide grooves for guiding the movement of the two limit rods 72 are provided in the first cavity 12. A double sealing ring structure is provided between the limit rod 72 and the guide groove. The double sealing ring structure can ensure the sealing of the connection between the limit rod 72 and the guide groove to avoid air leakage accidents.

[0056] Combine the following Figure 1 , Figure 4-5 The specific setting method of the second current limiting structure is described in detail:

[0057] The second flow-limiting structure 8 includes a second rotating disk 81, an adjusting screw 82 and a semi-axis structure 83; wherein the second rotating disk 81 is rotatably arranged at the upper port of the second cavity 13; the adjusting screw 82 is threadedly connected to the mounting through hole 14 formed at the upper end of the second cavity 13, and the adjusting screw 82 is a hollow structure, one end of which is provided with an arc protrusion 84, and the other end is arranged opposite to the second solenoid valve core 4 or the transmission rod 22; the semi-axis structure 83 is driven by the second rotating disk 82 and is rotatably connected to the mounting through hole 14, and when the semi-axis structure 83 rotates, it pushes the arc protrusion 84 to drive the adjusting screw 82 to reciprocate along the axial direction of the transmission rod 22, that is, when the adjusting screw is rotated under force, it can move up and down using the threaded structure, refer to Figure 4 The adjusting screw can be designed to form a limit abutment with the top end of the second solenoid valve core 4, or to form a limit abutment with the top end of the transmission rod 22. Therefore, when the other end of the adjusting screw 82 moves close to the second solenoid valve core or one side of the transmission rod, the movement gap between the adjusting screw 82 and the second solenoid valve core 4 or the transmission rod 22 can be adjusted and controlled to limit the stroke distance of the upward movement of the second solenoid valve core 4 or the transmission rod 22, so that the second-stage stroke size of the valve disk 21 can be adjusted, thereby controlling the flow size of the valve disk 21 within the second-stage stroke, achieving the purpose of adjustable opening distance of the secondary valve, and can be freely adjusted according to user needs, the adjustment operation is convenient, practical and reliable.

[0058] In this embodiment, combined with Figure 4-5 As shown, a damping adjuster 9 for controlling the slow upward movement of the transmission rod 22 is installed on the top of the valve body 1, and the damping adjuster 9 includes a damping rod 91 that passes through the mounting through hole 14 and extends into the cavity of the adjusting screw 82, and a top rod structure 221 that extends into the cavity of the adjusting screw 82 and abuts against the damping rod 91 is provided at the top of the transmission rod 22, wherein the second rotating disk is rotatably connected to the damping adjuster. With this structural arrangement, the top rod structure 221 abuts against the damping rod 91 as the transmission rod 22 moves upward, and the damping rod 91 is used to apply a damping effect to the transmission rod 22, thereby slowing down the upward movement speed of the transmission rod. With this structural arrangement, the movement speed of the valve disk 21 when opening can be adjusted and controlled through the damping adjuster 9, and the valve disk closed on the valve port can be opened slowly, thereby avoiding the risk of explosion caused by excessive instantaneous gas discharge, and ensuring the safety and reliability of the use of the solenoid valve device.

[0059] Further preferably, Figure 1As shown, two valve ports 11 and two valve disks 21 are arranged side by side on the ventilation pipeline 10, the first solenoid valve core 3 and the second solenoid valve core 4 are connected to one of the valve disks 21 through a transmission rod, and the valve driving device includes a third solenoid valve core 6 connected to the other valve disk, and a driving spring 61 passing through the third solenoid valve core 6 and connected to the other valve disk 21, and the driving spring 61 drives the other valve disk 21 to move away from the valve port when the third solenoid valve core 6 moves upward, thereby realizing the opening action of the other valve disk. In the present embodiment, the first solenoid valve core and the third solenoid valve core are electrically linked, so that the two valve disks 21 can be opened simultaneously when powered on, wherein the valve disk driven and controlled by the third solenoid valve core 6 can be fully opened first, and the valve disk driven and controlled by the first solenoid valve core 3 and the second solenoid valve core 4 needs to open two stages of stroke in sequence before it can be fully opened, so as to avoid excessive instantaneous discharge of gas and achieve the effect of step-by-step opening of gas flow, and can switch the flow size in real time according to work requirements, with convenient adjustment operation and high flow control accuracy, and can reasonably utilize gas and other resources to ensure the safety of the use of the solenoid valve device.

[0060] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A combined two-stage multifunctional solenoid valve device, comprising a valve body (1), a ventilation pipeline (10) arranged in the valve body (1), and at least one valve port (11) arranged in the ventilation pipeline (10), and at least one valve driving device for closing or opening the valve port, characterized in that: The valve driving device comprises: A valve assembly (2) comprising a valve disc (21) disposed at the valve port (11) and capable of opening or closing, and a transmission rod (22) fixedly connected to the valve disc; A first electromagnetic valve core (3) is movably connected to the transmission rod (22) in the valve body (1); when the first electromagnetic valve core (3) moves upward along the axial direction of the transmission rod (22), it drives the transmission rod to move in a direction away from the valve port (11), and drives the valve disc (21) to open a first-stage stroke at the valve port; A second electromagnetic valve core (4) is movably connected to the transmission rod (22) relative to the first electromagnetic valve core (3); when the second electromagnetic valve core (4) moves upward along the axial direction of the transmission rod (22), it drives the transmission rod to move in a direction away from the valve port (11), and drives the valve disc (21) to open from an initial stroke or a first-stage stroke to a second-stage stroke at the valve port; the opening distance of the valve disc (21) when it reaches the second-stage stroke is greater than the opening distance when it reaches the first-stage stroke; The valve body (1) is provided with a first flow limiting structure (7) and a second flow limiting structure (8) respectively connected to the first electromagnetic valve core (3) and the second electromagnetic valve core (4); the first flow limiting structure (7) and the second flow limiting structure (8) are respectively used to adjust the opening size of the valve disc (21) in the first stage stroke and the second stage stroke; the valve body (1) is provided with a first cavity (12) and a second cavity (13) aligned along the axial direction of the transmission rod (22); The first current limiting structure (7) comprises: A first rotating disk (71) rotatably disposed on the valve body (1); A limit rod (72) is movably arranged in the first cavity (12) along the axial direction of the transmission rod (22), and its lower end is arranged opposite to the first electromagnetic valve core (3); An adjusting member (73) is movably connected between the first rotating disk (71) and the valve body (1) through a threaded structure and is located at the upper end of the first cavity (12). The upper end of the limiting rod (72) is abutted against the adjusting member (73). When the first rotating disk (71) rotates, the adjusting member (73) is driven to reciprocate along the axial direction of the transmission rod, so that the adjusting member (73) pushes the limiting rod (72) to move toward the direction close to the first electromagnetic valve core (3); The second current limiting structure (8) comprises: A second rotating disk (81) rotatably disposed at an upper end of the second cavity (13); an adjusting screw (82) threadedly connected to a mounting through hole (14) formed at the upper end of the second cavity (13); the adjusting screw (82) is a hollow structure, one end of which is provided with a circular arc protrusion (84), and the other end is arranged opposite to the second solenoid valve core (4) or the transmission rod (22); The semi-shaft structure (83) is driven by the second rotating disk (81) to be rotatably connected to the mounting through hole (14). When the semi-shaft structure (83) rotates, it pushes against the arc protrusion (84) to drive the adjusting screw (82) to reciprocate along the axial direction of the transmission rod (22).

2. A combined two-stage multifunctional solenoid valve device according to claim 1, characterized in that: The first solenoid valve core (3) and the second solenoid valve core (4) are movably accommodated in the first cavity (12) and the second cavity (13) respectively, and the transmission rod (22) is movably extended between the first solenoid valve core (3) and the second solenoid valve core (4); the first solenoid valve core (3) and the second solenoid valve core (4) can move upward along the axial direction of the transmission rod (22) when the power is on, and can return to the original position along the axial direction of the transmission rod (22) when the power is off.

3. A combined two-stage multifunctional solenoid valve device according to claim 2, characterized in that: A limited transmission structure (5) is respectively arranged between the first solenoid valve core (3) and the second solenoid valve core (4) and the transmission rod (22), and when the first solenoid valve core (3) or the second solenoid valve core (4) moves upward, the limited transmission structure (5) drives the transmission rod (22) to move synchronously; a closing spring (23) is arranged between the valve body (1) and the valve disc (21), and when the first solenoid valve core (3) and / or the second solenoid valve core (4) is powered off, the closing spring (23) drives the valve disc (21) to close at the valve port.

4. A combined two-stage multifunctional solenoid valve device according to claim 3, characterized in that: The position limiting transmission structure (5) comprises: a position limiting recess (51) respectively arranged at the upper end of the first electromagnetic valve core (3) and the second electromagnetic valve core (4), and a position limiting clamping ring (52) fixedly sleeved on the transmission rod (22) and suitable for being accommodated in the position limiting recess (51), and the position limiting recess (51) pushes against the position limiting clamping ring (52) when the first electromagnetic valve core (3) or the second electromagnetic valve core (4) moves upward.

5. The combined two-stage multifunctional solenoid valve device according to claim 1, characterized in that: The adjusting member (73) is a threaded adjusting ring driven by the first rotating disk (71); the valve body (1) is provided with a threaded structure cooperating with the threaded adjusting ring; one end of the limiting rod (72) extends out of the first cavity and abuts against the lower end surface of the threaded adjusting ring.

6. A combined two-stage multifunctional solenoid valve device according to claim 1, characterized in that: Two limit rods (72) are arranged in parallel in the first cavity (12), and two guide grooves for guiding the movement of the two limit rods (72) are arranged in the first cavity (12), and a double sealing ring structure is arranged between the limit rod (72) and the guide grooves.

7. A combined two-stage multifunctional solenoid valve device according to claim 6, characterized in that: A damping adjuster (9) for controlling the slow upward movement of the transmission rod (22) is installed on the top of the valve body (1), and the damping adjuster (9) includes a damping rod (91) extending through the installation through hole (14) into the cavity of the adjusting screw (82), and a top end of the transmission rod (22) is provided with a top rod structure (221) extending into the cavity of the adjusting screw (82) and abutting against the damping rod (91).

8. A combined two-stage multifunctional solenoid valve device according to any one of claims 5 to 7, characterized in that: Two valve ports (11) and two valve discs (21) are arranged side by side on the ventilation pipeline (10); the first solenoid valve core (3) and the second solenoid valve core (4) are connected to one of the valve discs (21) via a transmission rod; the valve driving device comprises a third solenoid valve core (6) connected to the other valve disc, and a driving spring (61) passing through the third solenoid valve core (6) and connected to the other valve disc (21); the driving spring (61) drives the other valve disc (21) to move away from the valve port when the third solenoid valve core (6) moves upward; the first solenoid valve core and the third solenoid valve core are electrically linked.

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