Magnetic valve

Abstract

The utility model provides a magnetic valve. The magnetic valve comprises a valve body, a valve cavity formed in the valve body, a valve rod, a cut-off piece connected with the valve rod, an elastic reset piece connected with the cut-off piece, and a connecting channel for control, wherein one part of the valve rod extends out of the connecting channel for control and is arranged on a connecting seat for control; the magnetic control assembly is matched with one portion of the valve rod, the control sealing assembly blocks the valve rod and the magnetic control assembly in a sealed mode, and when the magnetic control assembly acts on the valve rod, the magnetic control assembly transmits first acting force to the valve rod through the control sealing assembly used for blocking; and / or the valve rod transmits a second acting force to the magnetic control assembly through the control sealing assembly used for blocking, the second acting force is an elastic reset force from the elastic reset piece, and the part, acting on the magnetic control assembly and the valve rod, on the control sealing assembly needs to meet the requirement that when the part is acted by the magnetic control assembly or the valve rod, the second acting force acts on the magnetic control assembly or the valve rod; and elastic deformation or elastic reset can be generated along with the movement of the valve rod. And it is possible to reduce fluid overflow.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline equipment technical field, especially be related to the solenoid valve for opening and closing fluid, it is the valve of straight type stroke. BACKGROUND

[0002] The background information provided in this section in connection with the utility model can not all be prior art, and there can be content that does not constitute prior art.

[0003] Pipeline equipment is mainly composed of pipes and various types of valves installed on the pipes.

[0004] Among the various types of valves, there is a solenoid valve, which functions to automatically open or close the pipeline according to the transmitted instructions. The shut-off member in the solenoid valve moves in a straight line during execution.

[0005] When the pipeline is used to transport fluids such as liquids, gases (such as fuel gas and other single type gases (such as CO2 gas) or mixed type gases), if a leak or other situation is detected in the pipeline, it needs to be closed in time to reduce the loss or danger, or the pipeline needs to urgently transport gas from the outside, it needs to be opened in time, the function of the solenoid valve is manifested.

[0006] In the existing solenoid valve, there can be a situation where the valve stem connected to the shut-off member is also provided with a sealing member (such as the sealing ring a in the figure) to prevent the fluid in the valve from leaking to the outside through the gap between the push member of the shut-off member and the channel on the valve stem. Figure 24 、 25 The utility model discloses a solenoid valve, which comprises a valve body, a valve cavity, a valve stem and a control sealing cover. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims to provide a solenoid valve by adding a new sealing member, a control sealing cover, so that the possibility of leakage of the fluid in the valve through the gap between the push member of the shut-off member and the channel cooperating with the push member can be reduced.

[0008] Based on the above purpose, the utility model provides a solenoid valve, which comprises:

[0009] A valve body;

[0010] A valve cavity is provided in the valve body, and the valve cavity is in communication with the outside of the valve body through a valve inlet, a valve outlet and a valve control mounting port;

[0011] A valve stem is provided in the valve cavity, and during operation, it moves in a straight line reciprocally;

[0012] a shut-off member connected to the valve stem and moving with the valve stem in a linear reciprocating manner to assume a shut-off position for blocking gas in the valve chamber or an open position for allowing gas to flow through the valve chamber

[0013] a resilient return member having at least a portion disposed in the valve chamber and cooperating with the shut-off member and / or the valve stem;

[0014] a magnetic control assembly which is independent of the valve stem and cooperates with the valve stem to control the position of the shut-off member;

[0015] a control connecting seat sealingly disposed on the valve control mounting port and used to mount the magnetic control assembly thereon;

[0016] a control connecting passage formed in the control connecting seat and having one end port communicating with the valve chamber and the other end port adjacent to the magnetic control assembly, for allowing the other portion of the valve stem to enter and cooperate with the magnetic control assembly; and

[0017] a control sealing assembly sealingly disposed on the control connecting passage to at least block the portion of the control connecting passage provided with the valve stem from the outside;

[0018] wherein, when the magnetic control assembly and the valve stem act on each other, the magnetic control assembly transmits a first acting force to the valve stem through the control sealing assembly for blocking, and / or the valve stem transmits a second acting force to the magnetic control assembly through the control sealing assembly for blocking;

[0019] wherein the second acting force is a resilient return force from the resilient return member in elastic deformation;

[0020] wherein the portion of the control sealing assembly for acting on the magnetic control assembly and the valve stem needs to satisfy that it can be elastically deformed or elastically returned with the movement of the valve stem when acted on by the magnetic control assembly or the valve stem.

[0021] In one example, the control sealing assembly comprises:

[0022] a control sealing cover disposed on the control connecting passage to sealingly block the portion of the control connecting passage provided with the valve stem from the other portion of the control connecting passage;

[0023] wherein the control sealing cover needs to satisfy that it is elastically deformed when acted on by an external force.

[0024] In one example, the control sealing assembly further comprises:

[0025] a sealing cover pressing member for pressing the control sealing cover against the control connecting seat; and

[0026] a fastener for the pressure member to fasten the control seal cover on the control connecting seat;

[0027] wherein the control seal cover is sealingly provided on the other end port of the control connecting passage.

[0028] In one example, when the pressure member for the seal cover, the fastener for the pressure member are provided, the pressure member for the seal cover is provided on the side of the control connecting seat where the other end port of the control connecting passage is provided.

[0029] In one example, the control seal cover comprises:

[0030] a seal cover bottom; and

[0031] a seal cover ring-shaped side portion sealingly surrounding the seal cover bottom;

[0032] wherein the seal cover bottom cooperates with the valve stem;

[0033] wherein the seal cover ring-shaped side portion is not in the same plane as the seal cover bottom, and the seal cover ring-shaped side portion extends from the seal cover bottom towards the magnetic control assembly.

[0034] In one example, the seal cover ring-shaped side portion is further provided with a seal ring-shaped platform, and correspondingly, the control connecting passage is provided with a connecting seat abutting platform;

[0035] wherein the pressure member for the seal cover tightly and sealingly provides the seal ring-shaped platform on the control seal cover on the connecting seat abutting platform on the control connecting seat.

[0036] In one example, the bottom of the control seal cover is provided with a valve stem accommodating groove for cooperating with the valve stem.

[0037] In one example, the magnetic control assembly comprises:

[0038] a control electromagnetic coil; and

[0039] a control moving iron core;

[0040] wherein the control moving iron core cooperates with the valve stem.

[0041] In one example, the magnetic control assembly further comprises:

[0042] a control mounting shell for accommodating the control electromagnetic coil and the control moving iron core;

[0043] The connection seat accommodating groove is provided on the control mounting shell adjacent to one side of the control connection seat, and is used for accommodating at least a part of the control connection seat.

[0044] The mounting shell fastener is used for detachably connecting the control mounting shell and the control connection seat.

[0045] The size and shape of the cross section of the connection seat accommodating groove are matched with the size and shape of the cross section of the part of the control connection seat.

[0046] In one example, the shape of the cross section of the connection seat accommodating groove is non-circular.

[0047] The additional aspects and advantages of the present application will be given in the following description, some of which will become apparent from the following description, or will be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0049] Figure 1 It is a schematic view of the overall structure according to one embodiment of the present application.

[0050] Figure 2 It is a front view of the schematic view. Figure 1

[0051] Figure 3 It is a top view of the schematic view. Figure 1

[0052] Figure 4 It is a structural schematic view of the control mounting shell on the magnetic control assembly in the schematic view. Figure 1

[0053] Figure 5 It is a structural schematic view of another view of the schematic view. Figure 4

[0054] Figure 6 It is a bottom view of the schematic view. Figure 4

[0055] Figure 7 It is a top view of the schematic view. Figure 4

[0056] Figure 8 It is a top view of the schematic view. Figure 1 ​​​​​​Partial structure schematic view in the

[0057] Figure 9 For Figure 8 Enlarged schematic view of A part in

[0058] Figure 10 For Figure 1 Partial structure schematic view after removing a magnetic control assembly in

[0059] Figure 11 For Figure 10 Top view schematic view of

[0060] Figure 12 For Figure 10 Structure schematic view of one example of a sealing cover press in

[0061] Figure 13 For Figure 12 Structure schematic view of another view of

[0062] Figure 14 For Figure 10 Top view schematic view of

[0063] Figure 15 For Figure 10 Front view schematic view of

[0064] Figure 16 For Figure 10 Partial structure schematic view after removing one example of a sealing cover press in

[0065] Figure 17 For Figure 16 Top view schematic view of

[0066] Figure 18 For Figure 16 Structure schematic view of one example of a control sealing cover in

[0067] Figure 19 For Figure 18 Structure schematic view of another view of

[0068] Figure 20 For Figure 18 Front view schematic view of

[0069] Figure 21 For Figure 18 Top view schematic view of

[0070] Figure 22 For Figure 16 Partial structure schematic view after removing one example of a control sealing cover in

[0071] Figure 23 For Figure 22a top view schematic diagram of the magnetic valve.

[0072] Figure 24 is Figure 1 a sectional view schematic diagram of the magnetic valve.

[0073] Figure 25 is Figure 24 a magnified schematic diagram of the B part in the magnetic valve.

[0074] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the application and, together with the description, serve to explain the principles of the application. In the drawings: DETAILED DESCRIPTION

[0075] The present application will be described with respect to the drawings in which only the embodiments of the application are shown for the purposes of illustration. It is not intended that the application be limited as described in the specification.

[0076] Valves can be classified into two categories according to the operation mode, i.e. rotary type and straight stroke type.

[0077] The valve of the rotary type is generally called rotary valve, and the valve core thereof is a rotary component for allowing or cutting off fluid. The rotary component can be in the form of a plate or a hemisphere, and the valve is changed from the open position to the closed position or vice versa by rotating the rotary component.

[0078] The valve of the straight stroke type is generally called straight stroke valve, and the valve core thereof is a linearly movable component. The linearly movable component can be in the form of a plate, and the valve is changed from the open position to the closed position or vice versa by moving the linearly movable component. The valve core can also be called a flow cutting member.

[0079] The magnetic valve of the present application belongs to the straight stroke valve.

[0080] In order to make the magnetic valve have the function of automatic control, the electromagnetic valve is produced.

[0081] The principle of the electromagnetic valve is that an electromagnetic force is generated by an electromagnetic coil to an iron core arranged on the axis thereof, the valve rod is controlled by the movement of the iron core, and the valve rod is connected with the valve core in the valve body which is connected with a spring, so as to control the state of the valve core.

[0082] Since the valve rod in the electromagnetic valve moves forward or backward along the linear direction during operation, there is a gap between the outlet of the valve body and the valve rod, and it is very likely that the fluid in the pipeline flows out from the gap.

[0083] To this end, the skilled person in the art realizes the sealing of the gap by providing a sealing ring on the valve stem at a location where the valve stem protrudes out of the outlet of the valve body. However, with repeated movement of the valve stem or over time, the sealing ring can create another gap with the valve stem or can create yet another gap between the sealing ring and the control port on the valve body. Fluid in the valve body can then flow out to the outside through the other gap and / or the yet another gap, resulting in fluid leakage.

[0084] Especially when the fluid is a gas (such as fuel gas or other single type of gas (such as CO2 gas) or mixed type of gas), if a leak is detected in the pipeline or other circumstances, if the gas of the valve body leaks to the outside through the gap between the valve stem and the passage of the valve stem cooperating with the valve stem; and as the difference between the gas pressure value of the gas passing in the pipeline and the gas pressure value of the outside increases, the gas flow rate of the leakage will also increase. This not only causes gas loss, but also causes harm to the outside environment and personnel if the gas is a toxic or flammable gas.

[0085] To solve the above problems, an embodiment of the present application comprises a valve body, a valve stem, a shut-off member, an elastic return member, a magnetic control assembly, and a control sealing assembly.

[0086] The magnetic valve in the present application can have four working modes. That is, the first working mode of the magnetic valve is: during operation, it is always in an energized state, and the valve always remains open when in the energized state, and changes to a closed state and remains closed after power loss; the second working mode of the magnetic valve is: during operation, it is always in an energized state, and the valve always remains closed when in the energized state, and changes to an open state and remains open after power loss; the third working mode of the magnetic valve is: during operation, it is always in a non-energized state, and the valve always remains open when in the non-energized state, and changes to a closed state and remains closed after power loss; the fourth working mode of the magnetic valve is: during operation, it is always in a non-energized state, and the valve is always in a normally closed state when in the non-energized state, and changes to an open state and remains open after power loss.

[0087] Valve body

[0088] The valve body 101 has a valve cavity 102 formed therein, and a valve inlet 103, a valve outlet 104, and a valve control mounting port 105 are also formed on the outer side of the valve body 101. The valve inlet 103, the valve outlet 104, and the valve control mounting port 105 are respectively in communication with the outside of the valve body 101;

[0089] The valve cavity 102 is for fluid to flow through.

[0090] Valve stem, shut-off member

[0091] As Figure 22 , 23 , 24, the valve stem 106 is connected with the intercepting member 107, and is moved forward or backward in a straight thread form.

[0092] At least a part of the valve stem 106 needs to extend out of the valve control mounting port 105, and is matched with the magnetic control assembly. That is, the valve stem 106 is directly controlled by the magnetic control assembly to indirectly control the position of the intercepting member 107.

[0093] The intercepting member 107, in operation, is moved forward or backward along a straight line direction with the valve stem 106, so as to be in a blocking position to block the fluid in the valve cavity 102 or in a flow-through position to flow through the gas in the valve cavity 102.

[0094] Elastic reset member

[0095] At least a part of the elastic reset member is arranged in the valve cavity 102, and is matched with the intercepting member 107 and / or the valve stem 106.

[0096] As an example of the elastic reset member, it can be a spring structure, specifically, an elastic reset spring 108 as shown in Figure 24 , or an elastic material such as rubber and the like, or a combination of the above two.

[0097] In operation, in the normal state (i.e. the state of the magnetic valve in most of the time in any of the four working modes of the magnetic valve), the elastic reset member is in a static elastic deformation state in the valve cavity 102, and when the electrical state of the magnetic valve (i.e. the energized state or the non-energized state) changes, the elastic reset member is elastically reset. After the magnetic valve is restarted, the elastic reset member is again in a static elastic deformation state (i.e. an elastic tensile state or an elastic compression state).

[0098] Control connection seat and control connection channel

[0099] As Figure 22 , 23 , 24, an example of the control connection seat 201 is arranged on the valve control mounting port 105, and can be used to carry the magnetic control assembly mounted thereon. In addition, the control connection seat 201 is also provided with the control connection channel 202 which communicates the valve cavity 102 and the magnetic control assembly.

[0100] The control connection passage 202 is arranged so that at least a part of the valve rod 106 can be matched with the magnetic control assembly through the control connection passage 202, so that the magnetic control assembly can control the valve rod 106, and finally control the position of the intercepting piece 107, to control the flow of fluid in the pipeline.

[0101] Magnetic control assembly

[0102] The magnetic control assembly is a component independent of the valve rod 106, that is, the magnetic control assembly and the valve rod 106 can be installed or disassembled separately, without the need to disassemble or install together.

[0103] In operation, the magnetic control assembly and the elastic return member directly or indirectly apply force to the intercepting piece 107, changing the position of the intercepting piece 107.

[0104] An example of the magnetic control assembly is shown in Figures 1 to 11 , 24, which includes a control electromagnetic coil 301 and a control moving iron core 302. The control electromagnetic coil 301 is arranged around the control moving iron core 302.

[0105] The above-mentioned example of the magnetic control assembly can be applied to the first working mode of the magnetic valve or the second working mode of the magnetic valve.

[0106] Another example of the magnetic control assembly is shown in Figure 8 , 9 , 24, which further includes a control permanent magnet 306.

[0107] The control permanent magnet 306 cooperates with the control moving iron core 302 to apply a magnetic force of a predetermined size to the control moving iron core 302.

[0108] The above-mentioned example of the magnetic control assembly can be applied to the third working mode of the magnetic valve or the fourth working mode of the magnetic valve.

[0109] The control permanent magnet 306 is made of magnetic material, so that the control permanent magnet 306 can apply a magnetic force to the control moving iron core 302 in the state that the magnetic valve is not powered, thereby indirectly acting on the valve rod 106 and the intercepting piece 107.

[0110] The control permanent magnet 306 is arranged so that the magnetic valve works in the following way: from the beginning, the magnetic valve is in a non-powered state, the magnetic force exerted by the control permanent magnet 306 on the control movable iron core 302 and then indirectly on the valve rod 106 balances the force exerted by the elastic return element in a deformed state directly or indirectly on the valve rod 106 and the intercepting element 107. Until the magnetic valve is powered, the electromagnetic force exerted by the control electromagnetic coil 301 on the control movable iron core 302 counteracts the magnetic force exerted by the control permanent magnet 306 on the control movable iron core 302, at which time the valve rod 106 and the intercepting element 107 are only subjected to the action from the elastic return element in an elastic deformation until the elastic return element reaches a substantially reset state.

[0111] Another example of the magnetic control assembly is shown in Figures 1 to 7 , 24, further comprising a control mounting housing 303.

[0112] In addition, the control mounting housing 303 and the control connecting seat 201 can be detachably fastened together by a mounting housing fastener, which can be of various structures, such as a screwing structure, a clamping structure, etc.

[0113] Other components of the magnetic control assembly (specifically: control electromagnetic coil 301, control movable iron core 302, control permanent magnet 306, etc.) can be mounted on the control mounting housing 303, and the control mounting housing 303 is arranged on the control connecting seat 201.

[0114] In this way, other components of the magnetic control assembly (specifically: control electromagnetic coil 301, control movable iron core 302, control permanent magnet 306, etc.) do not need to be directly mounted on the control connecting seat 201. In this way, other components of the magnetic control assembly can be protected from the risk of direct collision with the outside during operation by being arranged in the control mounting housing 303.

[0115] Moreover, in the presence of the control mounting housing 303, the magnetic control assembly can be mounted in the control mounting housing 303 first, and the control mounting housing 303 with the magnetic control assembly mounted therein can be independently transported and stored relative to other components in the magnetic valve.

[0116] Another example of the magnetic control assembly is shown in Figure 4 , 6 The control mounting housing 303 is provided with a connecting seat receiving groove 304 adjacent to one end of the control connecting seat 201.

[0117] The connection seat accommodating groove 304 cooperates with the control connection seat 201 to accommodate at least a portion of the control connection seat 201.

[0118] The size and shape of the connection seat accommodating groove 304 are adapted to the size and shape of the portion of the control connection seat 201 that cooperates with the connection seat accommodating groove 304. In this way, the control mounting housing 303 and the control connection seat 201 are not only fixed to each other by the mounting housing fasteners, but also the control mounting housing 303 is limited in position by the abutting contact of the sides of the connection seat accommodating groove 304 with the control connection seat 201. In the event that the control mounting housing 303 is subjected to an external force, the control connection seat 201 is subjected to a counteracting force that is transmitted from the control connection seat 201 to the sides of the connection seat accommodating groove 304 that are in contact with the control connection seat 201, and the counteracting force is then transmitted to the control mounting housing 303, thereby balancing the force that tends to cause the control mounting housing 303 to tilt or shift position, and so on.

[0119] In addition, in the case of the connection seat accommodating groove 304, the portion of the control connection seat 201 that cooperates with the connection seat accommodating groove 304 is non-circular in shape, and correspondingly, the connection seat accommodating groove 304 is also non-circular in shape. In this way, the control mounting housing 303 is less likely to rotate relative to the control connection seat 201 during installation, and installation is facilitated. In addition, in the event that the control mounting housing 303 is subjected to an external torque after installation, the non-circular shape of the control connection seat 201 and the connection seat accommodating groove 304 makes it possible to reduce the effect of the torque on the mounting housing fasteners.

[0120] Control seal assembly

[0121] The control seal assembly is sealingly disposed in the control connection passage 202 to block the portion of the valve stem 106 that is located in the control connection passage 202 from the magnetic control assembly.

[0122] In this way, the control seal assembly changes the situation in which the magnetic control assembly directly acts on the valve stem 106 or the valve stem 106 directly acts on the magnetic control assembly, to a situation in which the magnetic control assembly transmits a first force to the valve stem 106 via the control seal assembly, or the valve stem 106 transmits a second force to the magnetic control assembly via the control seal assembly.

[0123] In addition, in the cooperation of the magnetic control assembly, the control seal assembly and the valve stem 106, the control seal assembly prevents the fluid in the valve chamber 102 from flowing out to the outside through the control connection passage 202.

[0124] One example of the control seal assembly is shown in Figures 16-21 The control seal cover 401 is used to seal the control connection passage 202.

[0125] The control seal cover 401 is used to seal the control connection passage 202. The control seal cover 401 is used to seal the control connection passage 202.

[0126] In operation, the valve stem 106 or the magnetic control assembly transmits the corresponding force applied by the valve stem 106 or the magnetic control assembly to the magnetic control assembly or the valve stem 106 through the control seal cover 401. The control seal cover 401 enables the transmission of force and also prevents the fluid in the valve chamber 102 from flowing out to the outside through the control connection passage 202.

[0127] In this case, the control seal cover 401 can be adhered to the control connection passage 202 or integrally formed with the control connection passage 202.

[0128] The control seal cover 401 can be made of a material with elastic deformation properties (such as rubber) or can be made of a structure with elastic deformation properties (such as a spring) or a combination of the two.

[0129] Another example of the control seal assembly is shown in Figures 8 to 15 , 24, in addition to the control seal cover 401 described above, also includes a seal cover pressing member 402 and a pressing member fastener.

[0130] In this case, the control seal cover 401 can be adhered to the control connection passage 202 or integrally formed with the control connection passage 202.

[0131] The material of the seal cover pressing member 402 can generally be an engineering plastic.

[0132] The pressing member fastener can be a threaded member (such as a screw) or a clamping member with a clamping structure.

[0133] When the pressing member fastener is a threaded member, as shown in Figures 8 to 17, 22, 23, including a screw, a first connecting hole 4031 opened on the sealing cover pressing member 402, and a second connecting hole 4032 opened on the control connecting seat 201 correspondingly, the three components are matched to fasten the sealing cover pressing member 402 on the control connecting seat 201.

[0134] Thus, from the aspects of manufacturing, installation, maintenance, storage, and transportation, the control sealing cover 401, the sealing cover pressing member 402, and the pressing member fastener can be manufactured, installed, maintained, stored, and transported individually.

[0135] In another example of the control sealing assembly, the control sealing cover 401 is arranged on an opening opened on the control connecting seat 201 away from the valve cavity 102, the opening is communicated with the control connecting channel 202, thus the sealing cover pressing member 402 and the pressing member fastener are arranged on the opening in sequence after the control sealing cover 401 is arranged on the opening opened on the control connecting seat 201 away from the valve cavity 102, so that the edge of the control sealing cover 401 is tightly and sealingly arranged on the opening.

[0136] In an example of the control sealing cover, the control sealing cover includes a sealing cover bottom 4011 and a sealing cover ring-shaped side 4012. The sealing cover ring-shaped side 4012 is not in the same plane with the sealing cover bottom 4011, and the sealing cover ring-shaped side 4012 extends from the sealing cover bottom 4011 to the magnetic control assembly. The arrangement makes the control sealing cover have a longitudinal depth along the axial direction, so that the elastic deformation size of the control sealing cover along the axial direction of the control sealing cover is larger when the control sealing cover is subjected to an external force,

[0137] In another example of the control sealing assembly, as shown in Figures 18 to 24 The sealing cover ring-shaped side 4012 is further provided with a sealing ring-shaped table 4013, and the control connecting channel 202 is further provided with a connecting seat abutting table 203 correspondingly, the sealing cover pressing member 402 tightly and sealingly arranges the sealing ring-shaped table 4013 on the control sealing cover 401 on the connecting seat abutting table 203 on the control connecting seat 201. The connecting seat abutting table 203 is arranged adjacent to the opening opened on the control connecting seat 201 away from the valve cavity 102.

[0138] In an example of the control sealing cover, as shown in Figures 18 to 21, 24, 25, further comprising a valve stem receiving groove 4014 provided at the bottom 4011 of the sealing cover 401 for cooperating with the valve stem 106 and having a size and shape adapted to the portion of the valve stem 106 entering the valve stem receiving groove 4014. Thus, when the control mounting housing 303 is mounted on the sealing cover pressing member 402, the connection seat receiving groove 304 can receive the sealing cover pressing member 402 therein.

[0139] In one example, as shown in Figure 24 、 25 The valve stem receiving seat 404 is further provided in the valve stem receiving groove 4014, and the hardness of the valve stem receiving seat 404 can be relatively greater than that of the control sealing cover 401, so that the direct damage to the control sealing cover 401 caused by the collision of the valve stem 106 during movement can be reduced. In addition, the contact area between the valve stem receiving seat 404 and the control sealing cover 401 is generally greater than the contact area between the valve stem 106 and the control sealing cover 401, so that the acting strength of the valve stem 106 on the control sealing cover 401 can also be reduced.

[0140] In addition, the valve stem receiving seat 404 is a separate component which is detachably provided in the valve stem receiving groove 4014, so that when the valve stem receiving seat 404 is damaged, only the valve stem receiving seat 404 needs to be replaced, without the need to replace the entire control sealing cover 401.

[0141] When the control mounting housing 303 is provided, and when the mounting housing fastener is a screw, the mounting housing fastener includes a screw, a third connection hole 3051 provided on the control connection seat 201, and a fourth connection hole 3052 provided on the control mounting housing 303, which are matched to fasten the control mounting housing 303 on the control connection seat 201. When the sealing cover pressing member 402 is provided, a fifth connection hole 3053 is further provided on the pressing member extension 4021 provided on the edge of the sealing cover pressing member 402, and when connected, the screw is sequentially threaded through the fourth connection hole 3052, the fifth connection hole 3053, and the third connection hole 3051 to fasten the control mounting housing 303 on the control connection seat 201.

[0142] The provision of the pressing member extension 4021 and the fifth connection hole 3053 thereon can further increase the size of the contact area when the sealing cover pressing member 402 cooperates with the control connection seat 201, and can also strengthen the fastening of the sealing cover pressing member 402 on the control connection seat 201.

[0143] When the accommodating groove 304 for the connecting seat is provided, one end of the fourth connecting hole 3052 is communicated with the outside and the other end is communicated with the accommodating groove 304 for the connecting seat, and at this time, the fourth connecting hole 3052 is arranged along the radial direction of the control mounting shell 303, so that the disassembly and assembly of the screw in the mounting shell fastener is facilitated.

[0144] In the claims, the word "comprising" does not exclude other elements or steps; the word "a" or "an" does not exclude a plurality. In the claims, the use of the ordinal number "first", "second", "third", etc. does not imply an order of priority, sequence or chronology with respect to the other elements or steps, but is merely used for the purpose of distinguishing between the various elements or steps in the claims. Where certain features are described as being in the "in the" or "in the" of other features, this does not exclude that the features are in other features. The various aspects of the present application can be used alone or in combination or in various arrangements not specifically discussed in the foregoing embodiments, and the application is not limited to the details of the components or arrangements described in the foregoing description or illustrated in the drawings. For example, aspects described in one embodiment can be combined with aspects described in other embodiments in any manner. The steps, functions or features recited in the various modules or units can be performed or satisfied by one module or one unit. The steps of the methods disclosed herein are not limited to being performed in any particular order, and it is possible to perform some or all of the steps in other orders. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0145] Although the present application has been described by way of the drawings and embodiments, such description and illustration should be considered illustrative or exemplary rather than restrictive. Those of ordinary skill in the art will be aware that various modifications, additions and substitutions are possible without departing from the scope and spirit of the present application as disclosed in the appended claims.

Claims

1. A magnetic valve, characterized by The magnetic valve comprises: a valve body; a valve cavity formed in the valve body, the valve cavity being in communication with the valve body through a valve inlet, a valve outlet, and a valve control mounting port; a valve rod, at least a part of which is arranged in the valve cavity and moves linearly and reciprocally during operation; a shut-off member connected to the valve rod and moving linearly and reciprocally with the valve rod to block the gas in the valve cavity or to flow the gas in the valve cavity during operation; a resilient reset member, at least a part of which is arranged in the valve cavity and cooperates with the shut-off member and / or the valve rod; a magnetic control assembly which is independent of the valve rod and cooperates with the valve rod to control the position of the shut-off member; a control connecting seat which is sealingly arranged on the valve control mounting port and used to mount the magnetic control assembly; a control connecting channel which is formed in the control connecting seat and has one end port in communication with the valve cavity and the other end port adjacent to the magnetic control assembly and used for the other part of the valve rod to enter and cooperate with the magnetic control assembly; and a control sealing assembly which is sealingly arranged on the control connecting channel to at least block the part of the control connecting channel provided with the valve rod from the outside; wherein when the magnetic control assembly and the valve rod act on each other, the magnetic control assembly transmits a first acting force to the valve rod through the control sealing assembly for blocking, and / or the valve rod transmits a second acting force to the magnetic control assembly through the control sealing assembly for blocking; wherein the second acting force is a resilient reset force from the resilient reset member which is elastically deformed; wherein the part of the control sealing assembly which acts on the magnetic control assembly and the valve rod needs to satisfy that it can be elastically deformed or elastically reset with the movement of the valve rod when it is acted on by the magnetic control assembly or the valve rod.

2. The magnetic valve according to claim 1, characterized in that The control sealing assembly comprises: a control sealing cover which is arranged on the control connecting channel to sealingly block the part of the control connecting channel provided with the valve rod from the other part of the control connecting channel; wherein the control sealing cover needs to satisfy that it is elastically deformed when an external force acts on it.

3. The magnetic valve of claim 2, wherein The control sealing assembly further comprises: a sealing cover pressing member which is used to press the control sealing cover on the control connecting seat; and a pressing member fastener which is used to fasten the control sealing cover on the control connecting seat; wherein the control sealing cover is sealingly arranged on the other end port of the control connecting channel.

4. The magnetic valve according to claim 3, wherein: when the sealing cover pressing member and the pressing member fastener are arranged, the sealing cover pressing member is arranged on the side of the control connecting seat which is provided with the other end port of the control connecting channel.

5. The magnetic valve according to any one of claims 2 to 4, characterized in that The control sealing cover comprises: a sealing cover bottom; and a sealing cover ring-shaped side part which is sealingly arranged around the sealing cover bottom; wherein the sealing cover bottom cooperates with the valve rod; wherein the sealing cover ring-shaped side part is not in the same plane as the sealing cover bottom and extends from the sealing cover bottom to the magnetic control assembly.

6. The magnetic valve according to claim 5, wherein: The sealing cover further has a sealing ring-shaped platform on the ring-shaped side portion, and the control connecting channel has a connecting seat abutting platform correspondingly; The sealing cover is tightly and sealingly arranged on the connecting seat abutting platform of the control connecting seat by the sealing cover pressing member.

7. The magnetic valve according to claim 5, wherein: The bottom of the control sealing cover has a valve rod accommodating groove for cooperating with the valve rod.

8. The magnetic valve according to any one of claims 1 to 4, wherein The magnetic control assembly comprises: A control electromagnetic coil; and A control moving iron core; The control moving iron core cooperates with the valve rod.

9. The magnetic valve of claim 8, wherein, The magnetic control assembly further comprises: A control mounting housing for accommodating the control electromagnetic coil and the control moving iron core; A connecting seat accommodating groove on one side of the control mounting housing adjacent to the control connecting seat for accommodating at least a part of the control connecting seat; and A mounting housing fastener for detachably connecting the control mounting housing and the control connecting seat; The cross section of the connecting seat accommodating groove is adapted to the size and shape of the cross section of the part of the control connecting seat.

10. The magnetic valve according to claim 9, wherein: wherein The cross section of the connecting seat accommodating groove is non-circular.

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