Valve element mechanism, electromagnetic valve and valve device

Abstract

The utility model belongs to the technical field of valves, and particularly discloses a valve element mechanism, an electromagnetic valve and a valve device. The valve element mechanism comprises a main valve element assembly, an auxiliary valve element assembly and an auxiliary elastic piece. The main valve element assembly comprises a main valve shaft, an auxiliary sleeve and a main sealing cap which are coaxially arranged, the first end of the auxiliary sleeve is connected to the first end of the main valve shaft, the second end of the auxiliary sleeve is open, the auxiliary sleeve is of a stepped cylindrical structure with the caliber gradually increased from the first end to the second end, and the second end of the auxiliary sleeve is sleeved with the main sealing cap. The auxiliary valve element assembly comprises an auxiliary valve shaft and an auxiliary sealing cap which are connected. The auxiliary valve shaft is inserted into the auxiliary sleeve in a sliding mode. The auxiliary elastic piece is arranged on the auxiliary valve shaft in a sleeved mode and located in the main sealing cap, the two ends of the auxiliary elastic piece abut against the auxiliary sleeve and the auxiliary sealing cap respectively, and the auxiliary elastic piece applies elastic force to the auxiliary sealing cap to enable the auxiliary sealing cap to be away from the auxiliary sleeve. The product yield of the valve element mechanism can be improved, and the operation stability and reliability of the electromagnetic valve and the valve device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a valve core mechanism, solenoid valve and valve device. BACKGROUND

[0002] Valve is a kind of device for controlling the fluid on-off in pipeline, it is widely used in gas water heater, wall-hanging stove and various types of gas hot water equipment, is one of the key to safe and reliable operation of gas hot water equipment.

[0003] For example, Figure 1 Prior art provides a solenoid valve, it includes electromagnetic assembly 100', main sleeve 600', main valve core assembly, auxiliary valve core assembly, main elastic member 800' and auxiliary elastic member 900'.Wherein, main valve core assembly includes main valve shaft 200' and the main sealing cap 300' connected to the one end of main valve shaft 200', main sleeve 600' is inserted at the center hole of electromagnetic assembly 100', and one end of main valve shaft 200' is inserted into main sleeve 600' and the other end is connected with main sealing cap 300';Auxiliary sleeve 700' one end opening and one end closed, auxiliary sleeve 700' passes through main sealing cap 300' and closed end is inserted into main valve shaft 200', the opening end of auxiliary sleeve 700' is folded to form a flange portion, main sealing cap 300' is clamped between flange portion and main valve shaft 200', so that main valve shaft 200', main sealing cap 300' and auxiliary sleeve 700' are connected as a whole;Auxiliary valve core assembly is slidably inserted into auxiliary sleeve 700' and is provided with auxiliary sealing cap 500' at the first end, auxiliary elastic member 900' is connected between the bottom of auxiliary sleeve 700' and the second end of auxiliary valve core assembly;Main elastic member 800' is connected between main valve core assembly and main sleeve 600'.

[0004] The solenoid valve provided by prior art realizes two seals through main valve core assembly and auxiliary valve core assembly, improves sealing performance.But, because main sealing cap 300' is clamped between the flange portion of auxiliary sleeve 700' and the end surface of main valve core assembly, auxiliary sleeve 700' is in the form of long-diameter ratio large slender cylinder structure, leading to the difficulty in processing and forming auxiliary sleeve 700', low product yield, affecting the overall production cost of solenoid valve;At the same time, because auxiliary elastic member 900' is arranged between auxiliary valve shaft 400' and the bottom of auxiliary sleeve 700', the diameter of auxiliary elastic member 900' is reduced, and there are problems of unstable stress and insufficient elastic force when resetting, affecting the sealing reliability of auxiliary valve core assembly to valve port. UTILITY MODEL CONTENTS

[0005] One of the technical problems solved by the utility model is to provide a valve core mechanism, which can effectively solve the problem of processing difficulty caused by the long-diameter ratio of auxiliary sleeve being too large in the existing valve core mechanism and solve the problem of unstable stress caused by the small outer diameter of auxiliary elastic member.

[0006] The third technical problem solved by the utility model is to provide a valve device which can effectively solve the problems of high processing cost and unreliable plugging of the valve port of the existing valve device.

[0007] The third technical problem solved by the utility model is to provide a valve device which can effectively solve the problems of high processing cost and unreliable plugging of the valve port of the existing valve device.

[0008] The first technical problem is solved by the following technical scheme:

[0009] The valve core mechanism comprises:

[0010] The main valve core assembly comprises a main valve shaft, an auxiliary sleeve and a main sealing cap arranged coaxially, the first end of the auxiliary sleeve is connected to the first end of the main valve shaft, the second end of the auxiliary sleeve is open, the auxiliary sleeve has a stepped cylindrical structure with gradually increasing diameters from the first end to the second end, and the main sealing cap is sleeved on the second end of the auxiliary sleeve;

[0011] The auxiliary valve core assembly comprises an auxiliary valve shaft and an auxiliary sealing cap arranged coaxially, the auxiliary valve shaft extends coaxially with the main valve shaft and is slidingly inserted into the auxiliary sleeve, and the auxiliary sealing cap is connected to one end of the auxiliary valve shaft away from the main valve shaft;

[0012] The auxiliary elastic member is sleeved on the auxiliary valve shaft and located inside the main sealing cap, the two ends of the auxiliary elastic member abut against the limiting step of the auxiliary sleeve and the auxiliary sealing cap respectively, and the auxiliary elastic member applies an elastic force to the auxiliary sealing cap to make the auxiliary sealing cap away from the auxiliary sleeve.

[0013] Compared with the background art, the valve core mechanism has the beneficial effects that: the main sealing cap and the auxiliary sealing cap can cooperate to realize the plugging of the first valve port and the second valve port, thereby realizing two-way plugging and improving the sealing performance of the valve device when it is closed; the auxiliary sleeve has a stepped cylindrical structure with gradually increasing diameters from the first end to the second end, so that the size of the first end of the auxiliary sleeve can be matched with the first end of the main valve shaft while increasing the diameter of the second end of the auxiliary sleeve, thereby reducing the length-diameter ratio of the auxiliary sleeve, reducing the processing difficulty of the auxiliary sleeve, improving the processing yield of the auxiliary sleeve, and reducing the production cost of the valve core mechanism; in addition, the diameter of the second end of the auxiliary sleeve is large, the auxiliary elastic member can be directly sleeved between the auxiliary valve shaft and the main sealing cap, so that the diameter of the auxiliary elastic member can be relatively large, thereby ensuring that the elastic force of the auxiliary elastic member is sufficient for resetting, improving the stress stability and operation reliability of the auxiliary elastic member, and improving the use stability and reliability of the valve core mechanism.

[0014] In one of the embodiments, both ends of the auxiliary sleeve are open, the first end of the auxiliary sleeve is fixedly sleeved on the outer side of the main valve shaft, and a first sealing ring is arranged between the first end of the auxiliary sleeve and the main valve shaft.

[0015] In one of the embodiments, a limiting groove is formed in the outer side wall of the main valve shaft, the first end of the auxiliary sleeve is inwardly bent to form a limiting edge portion, and the limiting edge portion is clamped in the limiting groove.

[0016] In one of the embodiments, an installation groove is formed in the end face of the first end of the main valve shaft, the first end of the auxiliary sleeve is inserted into the installation groove and abuts against the circumferential groove wall and groove bottom of the installation groove.

[0017] In one of the embodiments, the auxiliary valve shaft comprises a first connecting shaft portion, a main shaft portion and a second connecting shaft portion connected coaxially, the outer diameter of the main shaft portion is greater than the outer diameters of the first connecting shaft portion and the second connecting shaft portion, and the auxiliary sealing cap is installed on the second connecting shaft portion.

[0018] An installation groove is formed in the end face of the first end of the main valve shaft, the first connecting shaft portion is movably inserted into the installation groove, and the main shaft portion is located outside the installation groove and is in sliding cooperation with the auxiliary sleeve.

[0019] In one of the embodiments, the auxiliary sleeve comprises a guide cylinder segment and an installation cylinder segment connected coaxially and gradually increasing in diameter, the guide cylinder segment is connected with the main valve shaft, the auxiliary valve shaft is slidably inserted into the guide cylinder segment, the main sealing cap is sleeved on the outer side of the installation cylinder segment, and a limiting step is formed at the connection between the installation cylinder segment and the guide cylinder segment.

[0020] In one of the embodiments, the installation cylinder segment comprises a first cylinder portion and a second cylinder portion gradually increasing in diameter, the first cylinder portion is connected between the second cylinder portion and the guide cylinder segment, and the main sealing cap is sleeved on the outer side of the second cylinder portion in an interference manner.

[0021] And / or, an installation ring portion is outwardly folded at one end of the installation cylinder segment away from the guide cylinder segment, an annular installation ring groove is formed in the inner wall of the main sealing cap, and the installation ring portion is clamped in the installation ring groove.

[0022] In one of the embodiments, the guide cylinder segment comprises a fixed cylinder portion, a transition cylinder portion and a sliding cylinder portion gradually increasing in diameter, and the transition cylinder portion is a conical cylinder structure.

[0023] An installation groove is formed in the end face of the first end of the main valve shaft, the fixed cylinder portion is inserted into the installation groove, and the sliding cylinder portion is located outside the installation groove.

[0024] The auxiliary valve shaft comprises a first connecting shaft part, a main shaft part and a second connecting shaft part coaxially connected, the first connecting shaft part is inserted into the fixed cylinder part, the main shaft part is in sliding fit with the sliding cylinder part, the auxiliary sealing cap is connected to the second connecting shaft part, and a tapered surface structure adapted to the transition cylinder part is formed at the connection between the main shaft part and the first connecting shaft part.

[0025] The second technical problem is solved by the following technical scheme:

[0026] An electromagnetic valve comprises:

[0027] An electromagnetic assembly has a central through hole;

[0028] A main sleeve is closed at one end and open at the other end, and the closed end of the main sleeve is inserted into the central through hole;

[0029] The valve core mechanism as above, the second end of the main valve shaft is slidingly inserted into the main sleeve;

[0030] A main elastic member is sleeved outside the valve core mechanism and abuts against the main sleeve and the main valve core assembly at both ends.

[0031] Compared with the background art, the electromagnetic valve has the beneficial effects that: by adopting the valve core mechanism, the product yield of the electromagnetic valve can be improved, the processing cost of the electromagnetic valve can be reduced, and the use stability and reliability of the electromagnetic valve can be improved.

[0032] The third technical problem is solved by the following technical scheme:

[0033] A valve device comprises:

[0034] A valve seat has a gas inlet channel, a valve cavity and a gas outlet channel in sequence, a first valve port and a second valve port surrounding the first valve port are formed at the communication part of the gas inlet channel and the valve cavity, and an installation port is formed through the valve seat and away from the first valve port;

[0035] The electromagnetic valve as above is sealingly installed at the installation port, and the valve core mechanism partially extends into the valve cavity;

[0036] The electromagnetic valve has an open state and a closed state, when the electromagnetic valve is in the closed state, the auxiliary sealing cap blocks the first valve port and the main sealing cap blocks the second valve port, and when the electromagnetic valve is in the open state, the main sealing cap opens the second valve port and the auxiliary sealing cap opens the first valve port.

[0037] The valve device has the beneficial effects that: the electromagnetic valve is adopted, the product yield of the valve device is improved, the processing cost of the valve device is reduced, and the use stability and reliability of the valve device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A sectional view of the electromagnetic valve provided by the prior art;

[0039] Figure 2 A structural sectional view of the valve device provided by the first embodiment of the utility model;

[0040] Figure 3 A sectional view of the valve core mechanism provided by the first embodiment of the utility model;

[0041] Figure 4 A sectional view of the valve core mechanism provided by the second embodiment of the utility model;

[0042] Figure 5 A sectional view of the electromagnetic valve provided by the third embodiment of the utility model.

[0043] Label explanation:

[0044] 100', electromagnetic assembly; 200', main valve shaft; 300', main sealing cap; 400', auxiliary valve shaft; 500', auxiliary sealing cap; 600', main sleeve; 700', auxiliary sleeve; 800', main elastic member; 900', auxiliary elastic member;

[0045] 100, valve core mechanism; 200, electromagnetic assembly; 300, main sleeve; 301, main cylinder part; 302, end plate part; 400, main elastic member; 500, fixed iron core; 600, valve seat; 601, air inlet channel; 602, valve cavity; 603, air outlet channel; 604, first valve port; 605, second valve port; 700, second sealing ring;

[0046] 1, main valve core assembly; 11, main valve shaft; 111, limiting groove; 112, mounting groove; 113, sealing ring groove; 12, auxiliary sleeve; 121, guide cylinder segment; 1211, fixed cylinder part; 1212, sliding cylinder part; 1213, transition cylinder part; 122, mounting cylinder segment; 1221, first cylinder part; 1222, second cylinder part; 123, limiting edge part; 124, mounting ring part; 13, main sealing cap; 131, mounting ring groove; 132, positioning convex part; 14, first sealing ring;

[0047] 2, auxiliary valve core assembly; 21, auxiliary valve shaft; 211, first connecting shaft part; 212, main shaft part; 213, second connecting shaft part; 214, convex part; 22, auxiliary sealing cap; 221, sealing main part; 222, boss part; 3, auxiliary elastic member. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0049] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0050] The terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0051] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] Embodiment one

[0053] The embodiment provides a valve device, and the valve device provided by the embodiment can be applied to a gas water heating equipment or other pipeline for realizing fluid on-off, so as to improve the detection and replacement convenience of the valve device and improve the use experience of the valve device while realizing the fluid on-off in the pipeline.

[0054] As Figure 2 and Figure 3As shown, in the embodiment, the valve device comprises a valve seat 600 and a solenoid valve. Among them, the valve seat 600 has an air inlet channel 601, a valve cavity 602 and an air outlet channel 603 which are sequentially communicated, a first valve port 604 and a second valve port 605 which are arranged around the first valve port 604 are formed at the communication position of the air inlet channel 601 and the valve cavity 602, and the side of the valve cavity 602 away from the first valve port 604 penetrates through the valve seat 600 to form a mounting port; the solenoid valve is sealingly mounted on the valve seat 600 through the mounting port, and the solenoid valve is used to control the opening and closing of the first valve port 604 and the second valve port 605, thereby realizing the opening and closing control of the air inlet channel 601 and the air outlet channel 603.

[0055] The solenoid valve comprises an electromagnetic assembly 200, a main sleeve 300, a valve core mechanism 100 and a main elastic member 400. Among them, the electromagnetic assembly 200 has a center through hole, one end of the center through hole is provided with a fixed iron core 500; the main sleeve 300 is open at one end and closed at the other end, the closed end of the main sleeve 300 is inserted into the center through hole, that is, the main sleeve 300 comprises a cylindrical main cylinder part 301 and an end plate part 302 arranged at the opening end of the main cylinder part 301, the main cylinder part 301 is inserted into the center through hole, and the end plate part 302 is arranged at one end face of the electromagnetic assembly 200; the valve core mechanism 100 is slidingly inserted into the main sleeve 300, and the main elastic member 400 is sleeved outside the valve core mechanism 100 and abuts against the end plate part 302 and the valve core mechanism 100 at both ends. The end plate part 302 is mounted on the valve seat 600, and the electromagnetic assembly 200 is located outside the valve cavity 602, and the valve core mechanism 100 partially extends into the inside of the valve cavity 602. In order to ensure the sealing performance of the valve cavity 602, a second sealing ring 700 is arranged between the end plate part 302 and the valve seat 600, and the second sealing ring 700 is arranged around the mounting port.

[0056] The valve core mechanism 100 comprises a main valve core assembly 1, an auxiliary valve core assembly 2 and an auxiliary elastic member 3. Among them, the main valve core assembly 1 comprises a main valve shaft 11, an auxiliary sleeve 12 and a main sealing cap 13 which are coaxially arranged, the first end of the auxiliary sleeve 12 is connected to the first end of the main valve shaft 11, the second end of the auxiliary sleeve 12 is open, the auxiliary sleeve 12 has a stepped cylinder structure with gradually increasing diameters from the first end to the second end, and the main sealing cap 13 is sleeved on the second end of the auxiliary sleeve 12; the auxiliary valve core assembly 2 comprises an auxiliary valve shaft 21 and an auxiliary sealing cap 22 which are coaxially arranged, the auxiliary valve shaft 21 is coaxially extended with the main valve shaft 11 and slidingly inserted into the auxiliary sleeve 12, and the auxiliary sealing cap 22 is connected to the end of the auxiliary valve shaft 21 away from the main valve shaft 11; the auxiliary elastic member 3 is sleeved on the auxiliary valve shaft 21 and located inside the main sealing cap 13, the two ends of the auxiliary elastic member 3 abut against the limiting step of the auxiliary sleeve 12 and the auxiliary sealing cap 22 respectively, and the auxiliary elastic member 3 applies an elastic force to the auxiliary sealing cap 22 to make the auxiliary sealing cap 22 away from the auxiliary sleeve 12.

[0057] The main elastic member 400 abuts against the main valve core assembly 1, the electromagnetic valve has an open state and a closed state, when the electromagnetic valve is in the closed state, the auxiliary sealing cap 22 blocks the first valve port 604 and the main sealing cap 13 blocks the second valve port 605, when the electromagnetic valve is in the open state, the main sealing cap 13 opens the second valve port 605 and the auxiliary sealing cap 22 opens the first valve port 604.

[0058] The valve core mechanism 100 provided by the embodiment has the following advantages. The main valve core assembly 1 and the auxiliary valve core assembly 2 are arranged, the main sealing cap 13 and the auxiliary sealing cap 22 can cooperate to block the first valve port 604 and the second valve port 605, two blocking are realized, and the sealing performance of the valve device in the closed state is improved. The auxiliary sleeve 12 has a stepped cylindrical structure with the diameter gradually increasing from the first end to the second end, the size of the first end of the auxiliary sleeve 12 can be matched with the first end of the main valve shaft 11, the diameter of the second end of the auxiliary sleeve 12 is increased, the length-diameter ratio of the auxiliary sleeve 12 is reduced, the processing convenience of the auxiliary sleeve 12 is improved, the processing yield of the auxiliary sleeve 12 is improved, and the production cost of the valve core mechanism 100 is reduced. In addition, the diameter of the second end of the auxiliary sleeve 12 is large, the auxiliary elastic member 3 can be directly arranged between the auxiliary valve shaft 21 and the main sealing cap 13, the diameter of the auxiliary elastic member 3 can be relatively large, the elastic force of the auxiliary elastic member 3 is sufficient for resetting, the stress stability and the operation reliability of the auxiliary elastic member 3 are improved, and the use stability and the reliability of the valve core mechanism 100 are improved.

[0059] It is worth noting that when the electromagnetic assembly 200 is powered off, the electromagnetic valve is in the closed state, the main sealing cap 13 blocks the second valve port 605 and the auxiliary sealing cap 22 blocks the first valve port 604, the auxiliary elastic member 3 applies an elastic force to the auxiliary sealing cap 22 to press the first valve port 604, and the main elastic member 400 applies an elastic force to the main sealing cap 13 to press the second valve port 605. When the electromagnetic assembly 200 is powered on, the electromagnetic valve is in the open state, the electromagnetic force generated by the electromagnetic assembly 200 drives the main valve core assembly 1 and the auxiliary valve core assembly 2 to move away from the first valve port 604, so that the auxiliary sealing cap 22 opens the first valve port 604 and the main sealing cap 13 opens the second valve port 605.

[0060] To improve the cooperation reliability of the valve core mechanism 100 and the valve seat 600, the valve seat 600 has a first sealing ring portion surrounding the first valve port 604 and a second sealing ring portion surrounding the second valve port 605, and the end faces of the first sealing ring portion and the second sealing ring portion are arc-shaped. When the electromagnetic valve is in the closed state, the auxiliary sealing cap 22 is in close contact with the first sealing ring portion, and the main sealing cap 13 is in close contact with the second sealing ring portion, so as to improve the blocking tightness of the main sealing cap 13 to the second valve port 605 and the blocking tightness of the auxiliary sealing cap 22 to the first valve port 604.

[0061] In an embodiment, the auxiliary sealing cap 22 partially protrudes from the main sealing cap 13 when the electromagnetic valve is in the open state, i.e., the second sealing ring portion is closer to the electromagnetic assembly 200 than the first sealing ring portion. In other embodiments, the spacing between the end faces of the first and second sealing ring portions and the electromagnetic assembly 200 can be the same.

[0062] In an embodiment, the auxiliary sleeve 12 is open at both ends, the first end of the auxiliary sleeve 12 is fixedly sleeved on the outer side of the main valve shaft 11, and a first sealing ring 14 is arranged between the first end of the auxiliary sleeve 12 and the main valve shaft 11. By arranging the auxiliary sleeve 12 in an open structure at both ends, the machining of the auxiliary sleeve 12 is facilitated, and the machining difficulty of the auxiliary sleeve 12 is further reduced. At the same time, the arrangement of the first sealing ring 14 can prevent leakage between the auxiliary sleeve 12 and the main valve shaft 11, and improve the sealing performance. Further, an annular sealing ring groove 113 is formed in the side wall of the main valve shaft 11, and the first sealing ring 14 is arranged in the sealing ring groove 113 to improve the installation convenience of the first sealing member.

[0063] To improve the connection stability of the auxiliary sleeve 12 and the main valve shaft 11, a limiting groove 111 is formed in the outer side wall of the main valve shaft 11, and the first end of the auxiliary sleeve 12 is inwardly bent to form a limiting edge portion 123, which is clamped in the limiting groove 111. By arranging the limiting edge portion 123 and the limiting groove 111, the movement of the auxiliary sleeve 12 relative to the main valve shaft 11 can be limited, and the reliability and stability of the relative position of the two can be ensured.

[0064] The limiting groove 111 has a groove bottom wall and oppositely arranged first and second groove side walls, the first groove side wall is located on the side of the second groove side wall facing the main sealing cap 13, and the included angle between the first groove side wall and the groove bottom wall is obtuse. The limiting edge portion 123 includes an obtusely connected first edge portion and a second edge portion, the first edge portion is in contact with the first groove side wall, the second edge portion is in contact with the groove bottom wall, and the end of the second edge portion is in contact with the second groove side wall. This arrangement can improve the convenience of the cooperation between the limiting edge portion 123 and the limiting groove 111, and improve the stability of the arrangement of the limiting edge portion 123 in the limiting groove 111.

[0065] The auxiliary sleeve 12 includes a guide cylinder segment 121 and an installation cylinder segment 122 coaxially connected and gradually increasing in diameter, the guide cylinder segment 121 is connected with the main valve shaft 11, the auxiliary valve shaft 21 is slidingly inserted into the guide cylinder segment 121, and the main sealing cap 13 is sleeved on the outer side of the installation cylinder segment 122.

[0066] In an embodiment, the guide cylinder segment 121 is in interference fit with the first end of the main valve shaft 11 to ensure the stability and reliability of the fit of the two. The guide cylinder segment 121 and the main valve shaft 11 can also be fastened together by welding, riveting or other means. Further, the cross section of the guide cylinder segment 121 is uniform everywhere to reduce the processing cost of the auxiliary sleeve 12. Meanwhile, with this arrangement, the structural outer diameter of the fit between the auxiliary valve shaft 21 and the guide cylinder segment 121 is equal to the structural outer diameter of the main valve shaft 11, thereby being able to enhance the overall structural strength and rigidity of the auxiliary valve shaft 21 and improve the operation reliability of the auxiliary valve core assembly 2.

[0067] In an embodiment, the auxiliary valve shaft 21 comprises coaxially connected first connecting shaft portion 211, main shaft portion 212 and second connecting shaft portion 213, the outer diameter of the main shaft portion 212 is greater than the outer diameter of the first connecting shaft portion 211 and the second connecting shaft portion 213, and the auxiliary sealing cap 22 is installed on the second connecting shaft portion 213; the first end of the main valve shaft 11 is provided with an installation groove 112, and the first connecting shaft portion 211 is movably inserted into the installation groove 112, and the main shaft portion 212 is located outside the installation groove 112 and is in sliding fit with the auxiliary sleeve 12. By providing the installation groove 112 and the first connecting shaft portion 211, further guidance can be provided for the axial movement of the auxiliary valve shaft 21, the probability of the operation deflection of the auxiliary valve shaft 21 is reduced, and the operation stability and reliability of the auxiliary valve core assembly 2 are improved; by providing the second connecting shaft portion 213, the size of the fit structure of the auxiliary valve shaft 21 and the auxiliary sealing cap 22 can be reduced, the connection convenience of the auxiliary valve shaft 21 and the auxiliary sealing cap 22 is improved, the overall elasticity of the auxiliary sealing cap 22 is more easily ensured, and sufficient space is provided for the arrangement of the auxiliary elastic member 3 between the auxiliary valve shaft 21 and the main sealing cap 13.

[0068] In other embodiments, the auxiliary valve shaft 21 can only comprise the main shaft portion 212 and the second connecting shaft portion 213, i.e. the auxiliary valve shaft 21 is located entirely outside the main valve shaft 11.

[0069] In an embodiment, the end of the first connecting shaft portion 211 is provided with a protruding portion 214, which is used to abut against the groove bottom of the installation groove 112 to limit the stroke of the auxiliary valve core assembly 2 moving relative to the main valve core assembly 1 in the direction towards the electromagnetic assembly 200; meanwhile, by providing the protruding portion 214, the contact area of the auxiliary valve shaft 21 and the groove bottom of the installation groove 112 can be reduced, thereby being able to reduce the impact generated when in contact.

[0070] It is worth noting that the connection structure of the auxiliary valve shaft 21 and the auxiliary sealing cap 22 can be arranged by referring to the existing structure, which is not limited or elaborated here.

[0071] The connecting position of the installation cylinder segment 122 and the guide cylinder segment 121 forms a limiting step. Further, the auxiliary sealing cap 22 comprises a sealing main part 221 and a boss part 222 coaxially connected, the boss part 222 is protrudingly arranged on the side of the sealing main part 221 facing the limiting step, and the second end of the auxiliary elastic member 3 is sleeved on the boss part 222 to provide positioning for the installation of the auxiliary elastic member 3, and further ensure the setting stability of the auxiliary elastic member 3.

[0072] The installation cylinder segment 122 comprises a first cylinder part 1221 and a second cylinder part 1222 with gradually increasing diameters, the first cylinder part 1221 is connected between the second cylinder part 1222 and the guide cylinder segment 121, and the main sealing cap 13 is sleeved on the outside of the second cylinder part 1222 in an interference fit. With this arrangement, the diameter of the second end of the auxiliary sleeve 12 can be further increased on the basis of the unchanged size of the guide cylinder segment 121, thereby the inner diameter of the main sealing cap 13 can be increased, so as to reduce the radial thickness of the main sealing cap 13 on the basis of the unchanged outer diameter of the main sealing cap 13, thereby saving materials and reducing costs. At the same time, this arrangement can enhance the overall structural strength and rigidity of the auxiliary sleeve 12, and reduce the probability of deformation of the auxiliary sleeve 12. Further, the main sealing cap 13 is in interference fit with the second cylinder part 1222 of the installation cylinder segment 122.

[0073] In order to improve the connection stability of the main sealing cap 13 and the auxiliary sleeve 12, the end of the installation cylinder segment 122 away from the guide cylinder segment 121 is outwardly folded with an installation ring part 124, and the inner wall of the main sealing cap 13 is provided with an annular installation ring groove 131, and the installation ring part 124 is clamped in the installation ring groove 131. In this way, the installation positioning and limiting of the installation ring part 124 and the installation ring groove 131 in the axial direction can be achieved through the cooperation of the installation ring part 124 and the installation ring groove 131, which can prevent the main sealing cap 13 from coming out of the auxiliary sleeve 12 and improve the setting stability of the main sealing cap 13.

[0074] Further, the installation ring part 124 comprises a first ring part folded radially outward from the end of the installation cylinder segment 122 and a second ring part folded from the outer end of the first ring part in the direction towards the electromagnetic assembly 200, the first ring part abuts against the groove wall of the installation ring groove 131 away from the electromagnetic assembly 200, the second ring part abuts against the groove bottom of the installation ring groove 131, and the end of the second ring part abuts against the groove wall of the installation ring groove 131 towards the electromagnetic assembly 200. In this way, the close cooperation of the installation ring part 124 in the installation ring groove 131 can be ensured, and at the same time, the width of the installation ring groove 131 can be increased, the overall structural strength and rigidity of the installation ring part 124 can be enhanced, and the setting stability and reliability of the main sealing cap 13 on the auxiliary sleeve 12 can be ensured.

[0075] In an embodiment, the end of the main elastic member 400 away from the electromagnetic assembly 200 abuts against the cylinder bottom of the second cylinder part 1222.

[0076] Embodiment two

[0077] This embodiment provides a valve device, and the valve device provided in this embodiment has a basically the same structure as the valve device in the above embodiments, with only some differences in the settings. This embodiment will not describe the same structure as the above embodiments again.

[0078] like Figure 4 As shown, in this embodiment, a mounting groove 112 is provided on the first end face of the main valve shaft 11. The first end of the auxiliary sleeve 12 is inserted into the mounting groove 112 and fits against the peripheral wall and bottom of the mounting groove 112. By inserting the auxiliary sleeve 12 into the mounting groove 112, it can be ensured that the auxiliary sleeve 12 has a cavity structure with one end open and the other end closed. This can prevent gas entering the main sleeve 300 from leaking through the gap at the connection between the main sleeve 300 and the main valve shaft 11, thus improving the sealing performance. At the same time, it eliminates the need for a first sealing ring, thereby reducing the number of components in the valve core mechanism 100 and reducing costs.

[0079] Furthermore, the guide cylinder section 121 includes a fixed cylinder section 1211, a transition cylinder section 1213, and a sliding cylinder section 1212, all with gradually increasing diameters. The transition cylinder section 1213 has a conical cylindrical structure. The auxiliary valve shaft 21 includes a first connecting shaft section 211, a main shaft section 212, and a second connecting shaft section 213, all coaxially connected. The first connecting shaft section 211 is inserted into the fixed cylinder section 1211, the main shaft section 212 slides in cooperation with the sliding cylinder section 1212, and the auxiliary sealing cap 22 is connected to the second connecting shaft section 213. The connection between the main shaft section 212 and the first connecting shaft section 211 forms a conical surface structure that matches the transition cylinder section 1213. This arrangement ensures that the structure of the guide cylinder section 121 is compatible with the structure of the auxiliary valve shaft 21 and the shape of the mounting groove 112, facilitating the cooperation between the auxiliary sleeve 12 and the main valve shaft 11 and the auxiliary valve shaft 21.

[0080] The fixed cylinder 1211 is riveted or bonded to the cylinder wall of the mounting groove 112 to ensure the stability and reliability of the fixed cylinder 1211 on the main valve shaft 11.

[0081] The shape of the mounting cylinder section 122, the mating structure between the mounting cylinder section 122 and the main sealing cap 13, and the setting of the auxiliary elastic element 3 can all be set with reference to the above embodiments, and will not be repeated here.

[0082] Example 3

[0083] This embodiment provides a valve device, and the valve device provided in this embodiment has a basically the same structure as the valve device provided in the above embodiments, with only some differences in the settings. This embodiment will not describe the same structure as the above embodiments again.

[0084] like Figure 5As shown, in the embodiment, the mounting cylinder segment 122 is an equal-diameter cylinder structure, i.e., the cross section of the mounting cylinder segment 122 is equal everywhere, thereby being capable of simplifying the structure of the auxiliary sleeve 12 and reducing the processing difficulty of the auxiliary sleeve 12.

[0085] The end of the main elastic member 400 away from the main sleeve 300 abuts against the main sealing cap 13, so as to ensure the setting stability and reliability of the main elastic member 400. Further, the end of the main sealing cap 13 toward the electromagnetic assembly 200 is provided with a positioning protrusion 132, and the end of the main elastic member 400 away from the electromagnetic assembly 200 is sleeved in the positioning protrusion 132, so as to realize the installation and positioning of the main elastic member 400.

[0086] It is worth noting that, in the embodiment, the cooperation structure of the auxiliary sleeve 12 with the main valve shaft 11 and the cooperation structure of the auxiliary sleeve 12 with the auxiliary valve shaft 21 can be set according to the first embodiment or the second embodiment, which is not limited and described herein.

[0087] The rest of the structure of the electromagnetic valve can be set according to the above embodiments, which is not described herein. In the specific content of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction. In order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the description.

[0088] The specific content of the above specific embodiments only expresses several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the utility model. It should be noted that, for ordinary skilled in the art, without departing from the concept of the utility model, a number of variations and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A spool mechanism, characterized by, include: The main valve core assembly (1) includes a main valve shaft (11) coaxially arranged, an auxiliary sleeve (12) and a main sealing cap (13). The first end of the auxiliary sleeve (12) is connected to the first end of the main valve shaft (11), and the second end of the auxiliary sleeve (12) is open. The auxiliary sleeve (12) has a stepped cylindrical structure with a gradually increasing diameter from the first end to the second end. The main sealing cap (13) is fitted onto the second end of the auxiliary sleeve (12). The auxiliary valve core assembly (2) includes an auxiliary valve shaft (21) and an auxiliary sealing cap (22) arranged coaxially. The auxiliary valve shaft (21) extends coaxially with the main valve shaft (11) and is slidably inserted into the auxiliary sleeve (12). The auxiliary sealing cap (22) is connected to the end of the auxiliary valve shaft (21) away from the main valve shaft (11). An auxiliary elastic element (3) is sleeved on the auxiliary valve shaft (21) and located inside the main sealing cap (13). The two ends of the auxiliary elastic element (3) abut against the limiting step of the auxiliary sleeve (12) and the auxiliary sealing cap (22) respectively. The auxiliary elastic element (3) applies an elastic force to the auxiliary sealing cap (22) to make the auxiliary sealing cap (22) move away from the auxiliary sleeve (12).

2. The spool valve mechanism of claim 1, wherein, Both ends of the auxiliary sleeve (12) are open. The first end of the auxiliary sleeve (12) is fixedly sleeved on the outside of the main valve shaft (11), and a first sealing ring (14) is provided between the first end of the auxiliary sleeve (12) and the main valve shaft (11).

3. The spool valve mechanism of claim 2, wherein, The outer side wall of the main valve shaft (11) is provided with a limiting groove (111), and the first end of the auxiliary sleeve (12) is bent inward to form a limiting edge (123), which is engaged in the limiting groove (111).

4. The spool valve mechanism of claim 1, wherein, The first end face of the main valve shaft (11) is provided with an installation groove (112), and the first end of the auxiliary sleeve (12) is inserted into the installation groove (112) and fits against the peripheral wall and bottom of the installation groove (112).

5. A spool mechanism according to any one of claims 1-4, characterized in that The auxiliary valve shaft (21) includes a first connecting shaft portion (211), a main shaft portion (212), and a second connecting shaft portion (213) coaxially connected. The outer diameter of the main shaft portion (212) is larger than the outer diameters of the first connecting shaft portion (211) and the second connecting shaft portion (213). The auxiliary sealing cap (22) is installed on the second connecting shaft portion (213). The first end face of the main valve shaft (11) is provided with a mounting groove (112), the first connecting shaft part (211) is movably inserted into the mounting groove (112), and the main shaft part (212) is located outside the mounting groove (112) and slides in cooperation with the auxiliary sleeve (12).

6. A spool mechanism according to any one of claims 1-4, characterized in that The auxiliary sleeve (12) includes a guide cylinder section (121) and an installation cylinder section (122) that are coaxially connected and have gradually increasing diameters. The guide cylinder section (121) is connected to the main valve shaft (11), the auxiliary valve shaft (21) is slidably inserted into the guide cylinder section (121), and the main sealing cap (13) is fitted onto the outside of the installation cylinder section (122). A limiting step is formed at the joint of the mounting cylinder segment (122) and the guide cylinder segment (121).

7. The spool valve mechanism of claim 6, wherein, The mounting cylinder segment (122) comprises a first cylinder portion (1221) and a second cylinder portion (1222) with gradually increasing diameters, the first cylinder portion (1221) is connected between the second cylinder portion (1222) and the guide cylinder segment (121), and the main sealing cap (13) is tightly sleeved outside the second cylinder portion (1222); And / or, an installation ring portion (124) is outwardly folded at one end of the mounting cylinder segment (122) away from the guide cylinder segment (121), an annular installation ring groove (131) is formed in the inner wall of the main sealing cap (13), and the installation ring portion (124) is clamped in the installation ring groove (131).

8. The spool valve mechanism of claim 6, wherein, The guide cylinder segment (121) comprises a fixed cylinder portion (1211), a transition cylinder portion (1213) and a sliding cylinder portion (1212) with gradually increasing diameters, and the transition cylinder portion (1213) is a conical cylinder structure; A mounting groove (112) is arranged on the first end face of the main valve shaft (11), the fixed cylinder portion (1211) is inserted into the mounting groove (112), and the sliding cylinder portion (1212) is located outside the mounting groove (112); The auxiliary valve shaft (21) comprises a first connecting shaft portion (211), a main shaft portion (212) and a second connecting shaft portion (213) connected coaxially, the first connecting shaft portion (211) is inserted into the fixed cylinder portion (1211), the main shaft portion (212) is in sliding fit with the sliding cylinder portion (1212), the auxiliary sealing cap (22) is connected to the second connecting shaft portion (213), and a conical surface structure adapted to the transition cylinder portion (1213) is formed at the joint of the main shaft portion (212) and the first connecting shaft portion (211).

9. An electromagnetic valve characterized by comprising: It comprises: An electromagnetic assembly (200) having a center through hole; A main sleeve (300) having a closed end and an open end, the closed end of the main sleeve (300) being inserted into the center through hole; The main valve shaft (11) of the valve core mechanism according to any one of claims 1-8 is slidingly inserted into the main sleeve (300); A main elastic member (400) is sleeved outside the valve core mechanism and abuts against the main sleeve (300) and the main valve core assembly (1) at both ends.

10. A valve device characterized by comprising: It comprises: A valve seat (600) having a gas inlet channel (601), a valve cavity (602) and a gas outlet channel (603) connected in sequence, a first valve port (604) and a second valve port (605) surrounding the first valve port (604) being formed at the connection between the gas inlet channel (601) and the valve cavity (602), and an installation port being formed through the valve seat (600) at the side of the valve cavity (602) away from the first valve port (604); The electromagnetic valve according to claim 9 is sealed and installed at the installation port, and the valve core mechanism partially extends into the valve cavity (602). The electromagnetic valve has an open state and a closed state, when the electromagnetic valve is in the closed state, the auxiliary sealing cap (22) blocks the first valve port (604) and the main sealing cap (13) blocks the second valve port (605), when the electromagnetic valve is in the open state, the main sealing cap (13) opens the second valve port (605) and the auxiliary sealing cap (22) opens the first valve port (604).

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