Electric stop valve

Abstract

The utility model relates to the technical field of valves, in particular to an electric stop valve. The electric stop valve comprises a valve body, a valve element, an elastic piece and a driving piece, the valve body is provided with a fluid channel, and a sealing part is formed in the fluid channel. The valve element is movably matched with the valve body and comprises a valve rod part, a valve head part and a limiting part, one end of the valve rod part is connected with the valve head part, and the other end of the valve rod part is connected with the limiting part. The elastic piece is arranged on the outer side of the fluid channel and arranged on the periphery of the valve rod part in a sleeving mode, one end of the elastic piece abuts against the limiting part, and the other end of the elastic piece abuts against the valve body. The driving piece is connected to the valve body, and the output end of the driving piece is stopped at the limiting part. When the driving piece is powered on, the driving piece can push the valve head part to be away from the sealing part, conduct the fluid channel and compress the elastic piece. When the driving piece is powered off, the elastic piece can push the valve head part to abut against the sealing part and be in sealing fit with the sealing part. According to the electric stop valve, the problem that an existing normally-closed stop valve is complex in structure, and consequently the cost of the existing normally-closed stop valve is high is solved.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to an electric stop valve. Background Art

[0002] Air conditioning systems are often equipped with stop valves to cut off the pipeline when the air conditioning system leaks or needs maintenance, thereby preventing refrigerant leakage and improving safety. In particular, some existing refrigerants are slightly flammable and large-scale leakage may cause serious safety accidents.

[0003] At present, in order to improve the safety after power failure, the air conditioning system will choose to set the stop valve on the pipeline as a normally closed stop valve, so as to realize the automatic cutting off of the pipeline after power failure. However, the existing normally closed stop valve, such as CN201696623U, includes a valve body, a valve core, a valve bonnet, a locking cap, a valve stem, and a sealing gasket connected to the valve stem. The valve core is installed in the valve body and seals with the valve body. The valve bonnet is threadedly connected to the valve body to lock the valve core. The valve stem is installed in the valve core and realizes axial movement through cooperation with the spring, so as to realize the opening and closing of the valve port by the sealing gasket. Although the stop valve structure can improve the sealing between the valve stem and the valve core through the sealing gasket and the sealing ring in the locking cap, it has many parts, and multiple parts also need to achieve sealing cooperation, which makes assembly difficult, thereby greatly increasing the cost. Utility Model Content

[0004] Based on this, it is necessary to provide an electric stop valve to solve the problem that the existing normally closed stop valve has a complex structure and leads to its high cost.

[0005] The present application provides an electric stop valve, which comprises a valve body, a valve core, an elastic member and a driving member, the valve body being provided with a fluid channel and a mounting opening connected to the fluid channel, a sealing portion being formed in the fluid channel; the valve core comprising a valve stem portion, a valve head portion and a limiting portion, the valve head portion being arranged in the fluid channel and being located on a side of the sealing portion away from the mounting hole; one end of the valve stem portion is connected to the valve head portion, the other end extends out of the mounting opening and is connected to the limiting portion, the valve core and the valve body being movably matched; the elastic member being arranged outside the fluid channel and sleeved on the outer periphery of the valve stem portion, one end of the elastic member abuts against the limiting portion, the other end extends out of the mounting opening and is connected to the limiting portion One end abuts against the end face of the valve body provided with the mounting opening; the driving member is connected to the valve body, and the output end of the driving member stops at the end face of the limiting portion away from the valve stem portion; when the driving member is energized, the driving member can push the limiting portion to move in a direction close to the mounting opening, and drive the valve stem portion and the valve head portion to move synchronously, so that the valve head portion is away from the sealing portion and the fluid channel is connected, and the elastic member is in a compressed state; when the driving member is de-energized, the elastic member pushes the limiting portion to move in a direction away from the mounting opening under the action of elastic force, so that the valve head portion abuts against the sealing portion and is sealed with the sealing portion.

[0006] In one of the embodiments, one end of the valve head portion away from the valve stem portion is arranged in a plane.

[0007] In one embodiment, the electric stop valve also includes a first sealing member, and a first installation groove which is recessed toward the axial direction is formed on the outer periphery of the valve head portion close to the valve stem portion, and the first sealing member is at least partially installed in the first installation groove; wherein, the first sealing member can move toward the sealing portion under the drive of the valve head portion, and abut against the sealing portion to form a soft seal.

[0008] In one embodiment, one of the first sealing member and the sealing portion is provided with a sealing cone surface, and the other is provided with a sealing corner, and the sealing corner can abut against the sealing cone surface and form a soft seal.

[0009] In one embodiment, the first sealing member is a plastic member or a rubber member.

[0010] In one of the embodiments, the valve body is further provided with a mounting hole, the two ends of which are respectively connected to the fluid channel and the mounting opening; the outer wall of the valve stem portion is provided with a second mounting groove which is recessed toward the axial direction; the electric stop valve also includes a second sealing member, which is installed in the second mounting groove, and the valve stem portion is sealed with the inner wall of the mounting hole along the axial direction of the valve core through the second sealing member.

[0011] In one embodiment, there are multiple second sealing members, and the multiple second sealing members are arranged at intervals along the axial direction of the valve core; wherein the second mounting grooves and the number of the second sealing members are arranged in a one-to-one correspondence.

[0012] In one embodiment, the driving member includes a driving body and a pushing rod, wherein the driving body is sleeved on one end of the valve body and is threadedly connected to the valve body, and the output end of the driving body is connected to the pushing rod and is pressed against the end surface of the limiting portion away from the valve stem portion through the pushing rod.

[0013] In one embodiment, the driving member further includes an abutment portion, which is connected to the driving body, and when the driving body and the valve body are locked and connected, the abutment portion can abut against the end surface of the valve body and cooperate with the valve body hard seal.

[0014] In one embodiment, the electric stop valve also includes a valve nozzle and a valve core, the valve nozzle is connected to the peripheral side of the valve body, and an installation cavity connected to the fluid channel is opened in the valve nozzle, and the valve core is installed in the installation cavity for filling refrigerant into the fluid channel.

[0015] Compared with the prior art, the electric stop valve provided by the present application, when there is no other external force, that is, only under the action of the elastic member, the force applied by the elastic member on the limit portion can be transmitted to the valve head through the valve stem, so that the valve head has a movement tendency to move toward the sealing portion, thereby realizing the sealing cooperation between the valve head and the sealing portion. Further, the electric stop valve drives the valve core to move to a predetermined position through the force applied by the driving member on the valve core, so that the valve head is away from the sealing portion, thereby realizing the conduction of the fluid channel and satisfying the smooth circulation of the refrigerant. At this time, the elastic member is compressed by force. When the air-conditioning system is suddenly powered off, the force applied by the driving member on the valve core disappears, and under the recovery action of the elastic member, the valve head can automatically reset and achieve close cooperation with the sealing portion to achieve the cutoff of the fluid channel. In this way, the probability of refrigerant leakage under power-off conditions can be effectively reduced, thereby greatly improving the safety of the electric stop valve and the air-conditioning system. In addition, the valve core and the valve body are in direct contact and active cooperation, and compared with the prior art, the remaining components disposed between the valve core and the valve body are eliminated, which greatly simplifies the structure of the electric stop valve and effectively improves the processing and assembly efficiency of the electric stop valve. At the same time, the drive member can be directly connected to the valve body, and its output end only needs to abut against the limiter, and the overall cooperation is also simpler, thus greatly reducing the cost of the electric stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of an electric stop valve according to an embodiment of the present application;

[0018] Figure 2 A cross-sectional view of an electric stop valve in an open state according to an embodiment of the present application;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0021] Figure 5 A cross-sectional view of an electric stop valve in a closed state according to an embodiment of the present application;

[0022] Figure 6 A cross-sectional view of an electric stop valve in an open state according to another embodiment of the present application;

[0023] Figure 7 A cross-sectional view of an electric stop valve in an open state according to another embodiment of the present application.

[0024] The symbols in the figure mean the following:

[0025] 100. Electric stop valve; 10. Valve body; 101. Fluid channel; 1011. Valve cavity; 1012. First channel; 1013. Second channel; 1014. Valve port; 102. Mounting hole; 103. Mounting opening; 11. Sealing portion; 111. Sealing corner; 20. Valve core; 21. Valve stem; 211. Second mounting groove; 22. Valve head; 221. First mounting groove; 23. Limiting portion; 30. Elastic member; 40. First sealing member; 41. Sealing cone; 50. Second sealing member; 60. Driving member; 61. Driving body; 62. Push rod; 63. Abutting portion; 70. Valve nozzle; 701. Mounting cavity; 71. Valve core. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0027] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0031] Air conditioning systems are often equipped with stop valves to cut off the pipeline when the air conditioning system leaks or needs maintenance, thereby preventing refrigerant leakage and improving safety. In particular, some existing refrigerants are slightly flammable and large-scale leakage may cause serious safety accidents.

[0032] At present, in order to improve the safety after power failure, the air conditioning system will choose to set the stop valve on the pipeline as a normally closed stop valve, so as to realize the automatic cutting off of the pipeline after power failure. However, the existing normally closed stop valve, such as CN201696623U, includes a valve body, a valve core, a valve bonnet, a locking cap, a valve stem, and a sealing gasket connected to the valve stem. The valve core is installed in the valve body and seals with the valve body. The valve bonnet is threadedly connected to the valve body to lock the valve core. The valve stem is installed in the valve core and realizes axial movement through cooperation with the spring, so as to realize the opening and closing of the valve port by the sealing gasket. Although the stop valve structure can improve the sealing between the valve stem and the valve core through the sealing gasket and the sealing ring in the locking cap, it has many parts, and multiple parts also need to achieve sealing cooperation, which makes assembly difficult, thereby greatly increasing the cost.

[0033] See also Figure 1-Figure 7 In order to solve the problem that the existing normally closed stop valve has a complex structure and leads to a high cost, the present application provides an electric stop valve 100, which includes a valve body 10, a valve core 20, an elastic member 30 and a driving member 60. The valve body 10 is an integrated structure, and the valve body 10 is provided with a fluid channel 101, an installation opening 103 and a mounting hole 102 connecting the fluid channel 101 and the installation opening 103, and a sealing portion 11 is formed in the fluid channel 101.

[0034] Specifically, the fluid channel 101 includes a first channel 1012, a second channel 1013, and a valve cavity 1011 connecting the first channel 1012 and the second channel 1013, wherein the position where the valve cavity 1011 and the first channel 1012 are connected is the valve port 1014 of the electric stop valve 100, and the sealing portion 11 is arranged at the position of the valve port 1014, so as to cooperate with the valve core 20 to achieve sealing when the valve port 1014 is closed. Further, the first channel 1012 and the second channel 1013 are arranged at an angle, and the present application is preferably arranged so that the first channel 1012 and the second channel 1013 are perpendicular to each other, and the axial direction of the first channel 1012 is parallel to or coincides with the axial direction of the valve core 20.

[0035] Generally, the air conditioning system has two working conditions, refrigeration and heating, and in the refrigeration and heating working conditions, the flow direction of the refrigerant in the electric stop valve 100 is opposite. For example, in the electric stop valve 100 provided in the present application, under the refrigeration working condition, the refrigerant enters the valve cavity 1011 from the first channel 1012 and flows out from the second channel 1013, and under the heating working condition, the refrigerant enters the valve cavity 1011 from the second channel 1013 and flows out from the first channel 1012, and the present application will be described later using this as an example. Of course, in other embodiments, the flow direction of the refrigerant under the refrigeration and heating working conditions can also be changed accordingly, that is, under the heating working condition, the refrigerant enters the valve cavity 1011 from the first channel 1012 and flows out from the second channel 1013, and under the refrigeration working condition, the refrigerant enters the valve cavity 1011 from the second channel 1013 and flows out from the first channel 1012.

[0036] Please continue reading Figure 2-Figure 5 The valve core 20 provided in the present application includes a valve stem 21, a valve head 22 and a limiting portion 23. The valve head 22 is arranged in the fluid channel 101 and is located on the side of the sealing portion 11 away from the mounting hole 102. One end of the valve stem 21 is connected to the valve head 22, and the other end extends out of the mounting opening 103 through the mounting hole 102 and is connected to the limiting portion 23, and the valve core 20 and the valve body 10 are movably matched. The elastic member 30 is arranged outside the fluid channel 101 and sleeved on the outer periphery of the valve stem 21, and one end of the elastic member 30 abuts against the limiting portion 23, and the other end abuts against the end surface of the valve body 10 provided with the mounting opening 103. The driving member 60 is connected to the valve body 10, and the output end of the driving member 60 stops at the end surface of the limiting portion 23 away from the valve stem 21. When the driving member 60 is powered on, the driving member 60 can push the limiting portion 23 to move toward the installation opening 103, and drive the valve stem 21 and the valve head 22 to move synchronously, so that the valve head 22 is away from the sealing portion 11 and the fluid channel 101 is connected, and the elastic member 30 is in a compressed state. When the driving member 60 is powered off, the elastic member 30 pushes the limiting portion 23 to move away from the installation opening 103 under the action of the elastic force, so that the valve head 22 is against the sealing portion 11 and is sealed with the sealing portion 11.

[0037] It can be understood that when there is no other external force acting on the electric stop valve 100 provided in the present application, that is, only under the action of the elastic member 30, the force applied by the elastic member 30 on the limit portion 23 can be transmitted to the valve head 22 through the valve stem 21, so that the valve head 22 has a movement tendency to move toward the direction close to the sealing portion 11, thereby realizing the sealing cooperation between the valve head 22 and the sealing portion 11. Further, the electric stop valve 100 drives the valve core 20 to move to a predetermined position through the force applied by the driving member 60 on the valve core 20, so that the valve head 22 is away from the sealing portion 11, thereby realizing the conduction of the fluid channel 101 and satisfying the smooth circulation of the refrigerant. At this time, the elastic member 30 is compressed by force. When the air-conditioning system is suddenly powered off, the force applied by the driving member 60 on the valve core 20 disappears, and under the recovery action of the elastic member 30, the valve head 22 can automatically reset and achieve close cooperation with the sealing portion 11, thereby realizing the truncation of the fluid channel 101. In this way, the probability of refrigerant leakage under power-off conditions can be effectively reduced, thereby greatly improving the safety of the electric stop valve 100 and the air conditioning system. In addition, the valve core 20 and the valve body 10 are in direct contact and active cooperation, and compared with the prior art, the remaining components arranged between the valve core 20 and the valve body 10 are eliminated, which greatly simplifies the structure of the electric stop valve 100 and effectively improves the processing and assembly efficiency of the electric stop valve 100. At the same time, the drive member 60 can be directly connected to the valve body 10, and its output end only needs to abut and cooperate with the limit portion 23, and the overall cooperation is also simpler, thus greatly reducing the cost of the electric stop valve 100.

[0038] Furthermore, in order to reduce the difficulty of assembling the valve core 20, in one embodiment, the axis of the first channel 1012, the axis of the valve core 20 and the axis of the installation opening 103 can be coaxially arranged, so that the valve stem portion 21 of the valve core 20 can pass through the first channel 1012 and directly penetrate the installation opening 103, thereby reducing the probability of interference.

[0039] Furthermore, in one embodiment, the limiting portion 23 is a riveted molding structure, that is, the limiting portion 23 can be formed by flattening the portion of the valve stem portion 21 protruding from the installation opening 103 by riveting, and the elastic member 30 can be installed before it is formed to reduce the difficulty of assembling the elastic member 30 and achieve the coordination between the valve core 20 and the valve body 10.

[0040] In one embodiment, the valve stem portion 21 and the valve head portion 22 are integrally formed to further enhance the overall structural strength of the valve core 20 .

[0041] In one embodiment, if Figure 2As shown, the end of the valve head 22 away from the valve stem 21 is arranged in a plane. Usually, the air conditioning system is mostly operated in cooling mode, that is, the refrigerant flows in from the first channel 1012 and flows out from the second channel 1013. At this time, the refrigerant will have a certain impact on the valve core 20 when it flows. Based on this, when the electric stop valve 100 is closed, since the side of the valve head 22 that contacts the refrigerant during cooling is a plane, the contact area with the refrigerant is increased, so it can be subjected to a greater flow pressure, and under the action of pressure, the valve head 22 and the sealing part 11 are more closely matched, thereby greatly enhancing the sealing performance of the electric stop valve 100 in the closed state and improving safety.

[0042] In one embodiment, if Figure 2 and Figure 3 As shown, the driving member 60 includes a driving body 61 and a pushing rod 62. The driving body 61 is sleeved on one end of the valve body 10 and is threadedly connected to the valve body 10, and the output end of the driving body 61 is connected to the pushing rod 62 and is pressed against the end surface of the limiting portion 23 away from the valve stem portion 21 through the pushing rod 62.

[0043] In this way, the structure and connection method of the driving member 60 are relatively simple, which can reduce the difficulty of installing the driving member 60. The driving member 60 is threadedly connected to the valve body 10 through the driving body 61, and can be tightened by torque, thereby improving the connection reliability of the driving member 60. At the same time, the driving rod 62 and the limiting part 23 can achieve the driving effect of the driving member 60 on the valve core 20 only by abutting and matching, further reducing the overall connection and matching difficulty. Among them, the power of the driving member 60 can also be adjusted to match the elastic force of the elastic member 30, the length of the valve stem 21, etc., to adjust the opening size of the electric stop valve 100, so as to meet the flow requirements under different working conditions.

[0044] Of course, in other embodiments, a snap-fitting groove or other structures may be provided on the push rod 62 , and snap-fitting may be achieved with the snap-fitting groove and the limiting portion 23 , so that the connection is more secure.

[0045] In one embodiment, if Figure 3 As shown, the driving member 60 also includes an abutment portion 63, one end of the abutment portion 63 along its own axial direction is connected to the driving body 61, and the other end is set to be contracted toward the direction close to its own axis. When the driving body 61 and the valve body 10 are locked and connected, the abutment portion 63 can be set against the end surface of the valve body 10 and hard-seal with the valve body 10. In this way, the sealing cooperation between the driving member 60 and the valve body 10 can be achieved, the probability of refrigerant leakage from the installation opening 103 is reduced, and safety is improved.

[0046] To further prevent the refrigerant from leaking from the installation opening 103, in one embodiment, Figure 3As shown, the outer wall of the valve stem 21 is provided with a second mounting groove 211 which is recessed toward the axis direction. The electric stop valve 100 further includes a second sealing member 50 which is installed in the second mounting groove 211, and the valve stem 21 is movably sealed with the inner wall of the mounting hole 102 along the axial direction of the valve core 20 through the second sealing member 50.

[0047] The second sealing member 50 may be configured as an O-ring and made of materials such as plastic or rubber to ensure that the second sealing member 50 has good sealing performance.

[0048] Further, in one embodiment, there are multiple second sealing members 50, and the multiple second sealing members 50 are arranged at intervals along the axial direction of the valve core 20. The second installation grooves 211 and the number of second sealing members 50 are arranged in a one-to-one correspondence.

[0049] By providing multiple second sealing members 50, not only can the sealing performance be further improved, but it is also beneficial to achieve the positioning of the valve stem 21, ensure the verticality of the valve stem 21, and effectively prevent the valve stem 21 from being skewed by the impact of the refrigerant. In this embodiment, two second sealing members 50 are specifically provided to reduce the difficulty of the provision. Of course, in other embodiments, the number of the second sealing members 50 can also be three or four, etc., which can be reasonably provided according to actual needs.

[0050] In one embodiment, if Figure 4 As shown, the electric stop valve 100 further includes a first sealing member 40, and a first mounting groove 221 which is recessed toward the axis direction is provided on the outer periphery of the valve head portion 22 near the valve stem portion 21, and the first sealing member 40 is at least partially mounted in the first mounting groove 221. The first sealing member 40 can move toward the sealing portion 11 driven by the valve head portion 22, and abut against the sealing portion 11 to form a soft seal. Through the contact seal between the first sealing member 40 and the sealing portion 11, the sealing performance of the valve port 1014 can be better ensured when the electric stop valve 100 is closed.

[0051] Specifically, in one embodiment, the first sealing member 40 is a plastic member or a rubber member. In this way, the first sealing member 40 has a certain elasticity, so that when it abuts against the sealing portion 11, the fit is tighter, which is conducive to further improving the sealing performance. Among them, the first sealing member 40 is preferably interference fit with the first installation groove 221 to improve the installation stability of the first sealing member 40.

[0052] In one embodiment, if Figure 4 and Figure 6As shown, one of the first seal 40 and the sealing portion 11 is provided with a sealing cone 41, and the other is provided with a sealing corner 111, and the sealing corner 111 can abut against the sealing cone 41 and form a soft seal. In this way, the sealing between the first seal 40 and the sealing portion 11 can be ensured.

[0053] Specifically, Figure 4 As shown, in this embodiment, the sealing cone surface 41 is arranged on the sealing part 11, and the sealing corner 111 is arranged on the first sealing member 40. At this time, under the action of the elastic force of the elastic member 30 or other external force, the sealing corner 111 of the first sealing member 40 is in close contact with the sealing cone surface 41 of the sealing part 11. Since the first sealing member 40 has a certain elasticity, the first sealing member 40 can be deformed by force and form a seal.

[0054] In another embodiment, if Figure 6 As shown, the sealing cone surface 41 is arranged on the first sealing member 40, and the sealing corner 111 is arranged on the sealing portion 11. At this time, due to the greater rigidity of the sealing portion 11, when the first sealing member 40 and the sealing portion 11 are matched, a linear contact can be formed between the sealing corner 111 and the sealing cone surface 41 to achieve line sealing.

[0055] Of course, in other embodiments, the side surface of the valve head portion 22 close to one end of the valve stem portion 21 may be directly used to cooperate with the sealing portion 11 for hard sealing, as long as the same sealing effect can be achieved.

[0056] In one embodiment, if Figure 7 As shown, the electric stop valve 100 further includes a valve nozzle 70 and a valve core 71. The valve nozzle 70 is connected to the peripheral side of the valve body 10, and a mounting cavity 701 communicating with the fluid channel 101 is provided in the valve nozzle 70. The valve core 71 is installed in the mounting cavity 701 for filling the fluid channel 101 with refrigerant. In this way, the amount of refrigerant in the pipeline can be adjusted.

[0057] Of course, the electric stop valve 100 may not be provided with the valve nozzle 70 and the valve core 71, that is, the structure of the valve core 20, valve body 10, elastic member 30, driving member 60 and other components of the present application can not only be applied to the electric stop valve 100 with a valve nozzle 70, but also can be applied to the electric stop valve 100 without a valve nozzle 70 structure, and the application scenario is broader.

[0058] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. An electric stop valve, characterized in that: The valve body (10) comprises a valve body (10), a valve core (20), an elastic member (30) and a driving member (60); the valve body (10) is provided with a fluid channel (101) and an installation opening (103) communicating with the fluid channel (101); a sealing portion (11) is formed in the fluid channel (101); The valve core (20) comprises a valve stem portion (21), a valve head portion (22) and a limiting portion (23); the valve head portion (22) is arranged in the fluid channel (101) and is located on a side of the sealing portion (11) away from the installation opening (103); one end of the valve stem portion (21) is connected to the valve head portion (22), and the other end extends out of the installation opening (103) and is connected to the limiting portion (23); the valve core (20) and the valve body (10) are movably matched; The elastic member (30) is arranged outside the fluid channel (101) and sleeved on the outer periphery of the valve stem (21), and one end of the elastic member (30) abuts against the limiting portion (23), and the other end abuts against the end surface of the valve body (10) provided with the mounting opening (103); The driving member (60) is connected to the valve body (10), and the output end of the driving member (60) is stopped at the end surface of the limiting portion (23) away from the valve stem portion (21); When the driving member (60) is energized, the driving member (60) can push the limiting portion (23) to move in a direction close to the installation opening (103), and drive the valve stem portion (21) and the valve head portion (22) to move synchronously, so that the valve head portion (22) is away from the sealing portion (11) and the fluid channel (101) is connected, and the elastic member (30) is in a compressed state; When the driving member (60) is powered off, the elastic member (30) pushes the limiting portion (23) to move in a direction away from the installation opening (103) under the action of elastic force, so that the valve head (22) abuts against the sealing portion (11) and is sealed with the sealing portion (11).

2. The electric stop valve according to claim 1, characterized in that: One end of the valve head portion (22) away from the valve stem portion (21) is arranged in a plane.

3. The electric stop valve according to claim 1, characterized in that: The electric stop valve further comprises a first sealing member (40); a first installation groove (221) is provided on the outer periphery of the valve head portion (22) on a side close to the valve stem portion (21) and is recessed towards the axis direction; the first sealing member (40) is at least partially installed in the first installation groove (221); Wherein, the first sealing member (40) can be moved towards the sealing portion (11) under the drive of the valve head (22), and abut against the sealing portion (11) to form a soft seal.

4. The electric stop valve according to claim 3, characterized in that: One of the first sealing member (40) and the sealing portion (11) is provided with a sealing cone surface (41), and the other is provided with a sealing corner (111), and the sealing corner (111) can abut against the sealing cone surface (41) to form a soft seal.

5. The electric stop valve according to claim 3, characterized in that: The first sealing component (40) is a plastic component or a rubber component.

6. The electric stop valve according to claim 1, characterized in that: The valve body (10) is further provided with a mounting hole (102), and two ends of the mounting hole (102) are respectively connected to the fluid channel (101) and the mounting opening (103); The outer wall of the valve stem portion (21) is provided with a second mounting groove (211) which is recessed toward the axial direction. The electric stop valve also includes a second sealing member (50). The second sealing member (50) is installed in the second mounting groove (211). The valve stem portion (21) is sealably matched with the inner wall of the mounting hole (102) along the axial direction of the valve core (20) through the second sealing member (50).

7. The electric stop valve according to claim 6, characterized in that: The number of the second sealing members (50) is plural, and the plurality of the second sealing members (50) are arranged at intervals along the axial direction of the valve core (20); Wherein, the number of the second mounting grooves (211) and the number of the second sealing members (50) are arranged in one-to-one correspondence.

8. The electric stop valve according to claim 1, characterized in that: The driving member (60) comprises a driving body (61) and a pushing rod (62); the driving body (61) is sleeved on one end of the valve body (10) and is threadedly connected to the valve body (10); the output end of the driving body (61) is connected to the pushing rod (62) and is pressed against the end surface of the limiting portion (23) away from the valve stem portion (21) through the pushing rod (62).

9. The electric stop valve according to claim 8, characterized in that: The driving member (60) further includes an abutment portion (63), one end of which is connected to the driving body (61) along its own axial direction, and the other end of which is contracted toward the direction close to its own axial line. When the driving body (61) and the valve body (10) are locked and connected, the abutment portion (63) can be abutted against the end face of the valve body (10) and cooperate with the valve body (10) in a hard seal.

10. The electric stop valve according to any one of claims 1 to 9, characterized in that: The electric stop valve also includes a valve nozzle (70) and a valve core (71), wherein the valve nozzle (70) is connected to the peripheral side of the valve body (10), and an installation cavity (701) connected to the fluid channel (101) is provided in the valve nozzle (70), and the valve core (71) is installed in the installation cavity (701) for filling the fluid channel (101) with refrigerant.

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