Fluid delivery valve

Abstract

The utility model relates to the technical field of electromagnetic valves, in particular to a fluid conveying valve. The fluid delivery valve comprises a valve body which is provided with a valve cavity for fluid delivery and a fluid delivery port, and the valve body is further provided with a mounting port communicated with the valve cavity; the valve element is installed in the valve cavity and used for switching the on-off state of the fluid conveying opening. One end of the driving piece is a driving end, and the other end of the driving piece is a linkage end which extends into the mounting opening and is linked with the valve element; and the isolating membrane seals the mounting opening, an avoiding opening is formed in the isolating membrane, and the driving piece stretches into the valve element through the avoiding opening and is in sealing fit with the edge of the avoiding opening. According to the fluid conveying valve, the isolating membrane is arranged, the installing opening which is formed in the valve body and communicates with the valve cavity is closed through the isolating membrane, so that the fluid conveying opening is separated from the driving piece through the isolating membrane, after the fluid conveying valve is powered on, the isolating membrane can effectively filter fluid impurities flowing through the driving piece, and the situation that the driving piece loses efficacy after being interfered by the fluid impurities is effectively avoided; the fluid delivery valve is damaged, so that the service life of the fluid delivery valve is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of solenoid valves, and particularly to a fluid delivery valve. Background Art

[0002] Fluid delivery valves are mainly used as devices for controlling fluid delivery. When powered on, an electric current flows through a coil to generate a magnetic force, attracting the valve core to move, thereby opening the valve and allowing the fluid to pass through; when powered off, the valve core resets under the action of a spring, closing the valve and stopping the fluid from passing through. However, existing fluid delivery valves do not have a filtering device when the fluid passes through, and impurities in the fluid easily enter the position of the driving part through the valve core, resulting in the driving part being stuck and damaged. Summary of the Utility Model

[0003] Based on this, it is necessary to provide a fluid delivery valve that can effectively prevent fluid impurities from entering the driving part through the valve core, thereby increasing the service life.

[0004] To solve the above technical problems, the present application provides the following technical solutions:

[0005] A fluid delivery valve, the fluid delivery valve comprising: a valve body having a valve cavity for fluid delivery and a fluid delivery port communicating with the valve cavity, the valve body further having an installation port communicating with the valve cavity; a valve core movably installed in the valve cavity for switching the on / off state of the fluid delivery port; a driving part having a driving end at one end and a linkage end extending into the installation port and linked with the valve core; an isolation membrane closing the installation port, the isolation membrane having an avoidance opening, and the driving part extending into the valve core through the avoidance opening and sealingly cooperating with the edge of the avoidance opening.

[0006] It can be understood that in this application, by providing an isolation membrane to close the installation port opened on the valve body and communicating with the valve cavity, the fluid delivery port is separated from the driving part by the isolation membrane. After the fluid delivery valve is powered on, the isolation membrane can effectively filter fluid impurities flowing through the driving part, effectively preventing the driving part from failing due to interference by fluid impurities and causing damage to the fluid delivery valve, thereby increasing the service life of the fluid delivery valve.

[0007] In one embodiment, there are three fluid delivery ports, and the valve core has: a first working position for conducting the first fluid delivery port and the second fluid delivery port; a second working position for conducting the first fluid delivery port and the third fluid delivery port.

[0008] It can be understood that the working positions of the valve core are divided into two by three fluid delivery ports, which can realize pipeline switching during fluid delivery, thereby increasing the fluid routes of the fluid delivery valve and realizing its diversified functions.

[0009] In one of the embodiments, the outer wall of the valve body is provided with a gasket arranged around the installation port, and the gasket overlaps the outer edge of the isolation membrane.

[0010] It is understandable that the provision of the gasket enables the isolation diaphragm to be tightly connected to the periphery of the mounting port to avoid a gap between the two, thereby effectively preventing fluid impurities from entering the drive member through the gap and causing damage to the fluid delivery valve.

[0011] In one of the embodiments, the fluid delivery valve further includes: an electromagnetic drive mechanism, which is transmission-connected to the drive member, and the electromagnetic drive mechanism has a shell, which is fixed to the valve body and presses the gasket; the outer wall of the valve body is provided with a recessed groove arranged around the installation port, and the gasket is located in the recessed groove.

[0012] It can be understood that the electromagnetic drive mechanism is used to drive the drive member in the fluid delivery valve. The gasket in the groove is pressed by the outer shell, which effectively partitions the valve body and the electromagnetic drive mechanism. The fluid impurities that pass through the valve body and enter the electromagnetic drive mechanism are filtered out by the isolation membrane, further preventing impurities from entering the drive member and damaging it.

[0013] In one embodiment, the inner edge of the avoidance opening is clamped tightly to the outer periphery of the driving member.

[0014] In one embodiment, the valve core has a connecting rod, and the linkage end of the driving member is plugged and fixed to the connecting rod; a step structure with relative positions along the plug-in direction is provided between the connecting rod and the driving member, and the inner edge of the avoidance port is clamped and fixed by the step structure.

[0015] It is understandable that the inner edge of the avoidance opening is clamped and fixed by the provided step structure, thereby pressing the isolation membrane to ensure the sealing of the edge of the isolation membrane and improve the isolation effect of the isolation membrane on fluid impurities.

[0016] In one of the embodiments, the isolation membrane has a first thickened area at the inner edge of the avoidance opening, and the first thickened area is clamped by the step structure.

[0017] In one embodiment, the outer edge of the isolation diaphragm has a second thickened area, and the second thickened area is clamped between the gasket and the valve body.

[0018] It can be understood that when the isolation membrane is installed on the fluid delivery valve, the thickened area set at its edge can enable it to be pressed against the connection part, avoiding the appearance of a connection gap between the isolation membrane and the driving member, further increasing the tightness of the connection area, and allowing the fluid to be effectively filtered through the isolation membrane.

[0019] In one embodiment, the isolation film is an integrally deformable conical cylinder structure to adapt to the movement of the driving member.

[0020] It can be understood that the setting of the conical cylinder structure makes the isolation film have a undulating shape, increasing its ability to adapt to deformation, making it not completely rely on the elasticity of the isolation film itself, improving its fatigue resistance effect, while taking into account the sealing performance and increasing the service life.

[0021] In one embodiment, the conical cylinder structure has a bus shape that bends and extends.

[0022] Compared with the prior art, the fluid delivery valve closes the installation port opened on the valve body and communicating with the valve cavity by providing an isolation film, so that the fluid delivery port is separated from the driving member by the isolation film. After the fluid delivery valve is powered on, the isolation film can effectively filter the fluid impurities flowing through the driving member, effectively avoiding the failure of the driving member due to the interference of fluid impurities, resulting in the damage of the fluid delivery valve, thereby increasing the service life of the fluid delivery valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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 required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of the fluid delivery valve provided by the present application.

[0025] Figure 2 It is a schematic cross-sectional structure diagram of the fluid delivery valve provided by the present application.

[0026] Figure 3 It is a schematic structural diagram of the valve body provided by the present application.

[0027] Figure 4 It is an exploded structural diagram of the fluid delivery valve provided by the present application.

[0028] The reference numerals of each component are as follows:

[0029] 100, Fluid delivery valve; 10, Valve body; 11, Valve cavity; 12, Fluid delivery port; 121, First fluid delivery port; 122, Second fluid delivery port; 123, Third fluid delivery port; 13, Movable gasket; 14, O-ring; 15, Mounting port; 16, Sunk groove; 20, Valve core; 21, Connecting rod; 30, Driving part; 31, Driving end; 32, Spring; 33, Linkage end; 34, Step structure; 40, Isolation film; 41, Avoidance port; 42, Gasket; 43, First thickening area; 44, Second thickening area; 50, Electromagnetic drive mechanism; 51, Outer shell. Detailed implementation mode

[0030] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation mode of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0031] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of the present application are only for the purpose of illustration and do not represent the only implementation mode.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0034] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field 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 of the related listed items.

[0035] Please refer to Figures 1 to 4 , this application provides a fluid delivery valve 100, which is applied to fluid control of devices such as coffee machines and floor sweepers, and is mainly used for filtering fluid impurities to prevent impurities from entering the driving member and causing damage to it, so as to increase the service life of the fluid delivery valve.

[0036] As Figures 1 to 4 shown, the fluid delivery valve includes: a valve body 10 having a valve cavity 11 for fluid delivery and a fluid delivery port 12 communicating with the valve cavity 11, and the valve body 10 is further provided with a mounting port 15 communicating with the valve cavity 11; a valve core 20 movably installed in the valve cavity 11 for switching the on / off state of the fluid delivery port 12; a driving member 30 with one end being a driving end 31 and the other end being a linkage end 33 extending into the mounting port 15 and linked with the valve core 20; an isolation film 40 closing the mounting port 15, the isolation film 40 is provided with an avoidance opening 41, and the driving member 30 extends into the valve core 20 through the avoidance opening 41 and is in sealing cooperation with the edge of the avoidance opening 41.

[0037] It should be explained that during the process of delivering fluid by the fluid delivery valve 100, fluid impurities will enter the driving mechanism through the valve core, resulting in the driving mechanism being stuck and damaged, greatly shortening the service life of the fluid delivery valve 100. In this application, by providing the isolation film 40, the isolation film 40 closes the mounting port 15 opened on the valve body 10 and communicating with the valve cavity 11, so that the fluid delivery port 12 is separated from the driving member 30 by the isolation film 40. After the fluid delivery valve 100 is powered on, the isolation film 40 can effectively filter the fluid impurities flowing through the driving member 30, effectively avoiding the driving member 30 from failing due to interference by fluid impurities and causing damage to the fluid delivery valve 100, thereby increasing the service life of the fluid delivery valve 100.

[0038] Exemplarily, the fluid delivery port 12 includes a first fluid delivery port 121, a second fluid delivery port 122, and a third fluid delivery port 123. Among them, the first fluid delivery port 121 is an outlet port, and the second fluid delivery port 122 and the third fluid delivery port 123 are inlet ports. In this embodiment, liquids of different media can enter through the second fluid delivery port 122 and the third fluid delivery port 123 respectively and then exit through the first fluid delivery port 121.

[0039] In one embodiment, asFigure 2 As shown, an active gasket 13 and an O-ring 14 are also provided inside the valve body 10. The first fluid delivery port 121 is connected to the active gasket 13, and then tightly connected to the third fluid delivery port 123 through the O-ring 14 to increase the connection tightness between the fluid delivery ports 12. Of course, the setting of the active gasket 13 and the O-ring 14 inside the fluid delivery valve 100 belongs to the prior art and will not be elaborated here.

[0040] Here, the valve body 10 is set as a split structure (see Figure 4 ), the first fluid delivery port 121 and the second fluid delivery port 122 are set as a whole. After being connected to the active gasket 13 first, they are then tightly connected to the third fluid delivery port 123 through the O-ring 14.

[0041] Furthermore, as Figure 3 shown, a sink 16 is provided on the outer wall of the valve body 10, which is annularly distributed around the installation port 15, so that the fluid delivery valve 100 can be sleeved with the valve body 10 through the sink 16 to achieve a tight connection.

[0042] As Figures 2 to 4 shown, a connecting rod 21 is provided on the valve core 20, and the connecting rod 21 is fixedly inserted between the driving member 30.

[0043] Furthermore, the valve core 20 has a first working position and a second working position. The first working position conducts the first fluid delivery port 121 and the second fluid delivery port 122, and the second working position conducts the first fluid delivery port 121 and the third fluid delivery port 123. It can be understood that the working positions of the valve core 20 are divided into two through the three fluid delivery ports 12, which can realize the pipeline switching during fluid delivery, thereby increasing the fluid routes of the fluid delivery valve 100 and realizing its diversified functions.

[0044] Exemplarily, please refer to Figure 4 , a spring 32 is connected to the driving end 31 of the driving member 30 to control the movement of the driving member 30.

[0045] Preferably, a stepped structure 34 is provided between the connecting rod 21 and the driving member 30, and the stepped structure 34 is clamped and fixed on the inner edge of the avoidance port 41. In this way, the avoidance port 41 is clamped and fixed through the provided stepped structure 34, which can improve the sealing performance of the connection position and ensure the isolation effect of the isolation film 40 on fluid impurities.

[0046] As Figure 4 shown, the isolation film 40 is a deformable cone structure as a whole to adapt to the movement of the driving member 30. The setting of the cone structure makes the isolation film 40 have a undulating shape, which can increase its ability to adapt to deformation, so that it can stretch without completely relying on its own elasticity, thereby improving its fatigue resistance effect.

[0047] Preferably, the conical cylinder structure has a bus shape with a curved extension. In this way, both the sealing performance and the telescopic property can be taken into account, and the service life of the isolation film 40 can be further increased.

[0048] Here, the isolation film 40 can be made of materials such as metal or silica gel, and has strong deformation ability, or can be arranged in a folded shape, so that when switching between the first working position and the second working position of the valve core 20, the isolation film 40 can undergo repetitive telescopic changes accordingly without breaking, thereby further improving the fatigue resistance effect of the isolation film 40.

[0049] Furthermore, a gasket 42 is provided on the outer wall of the valve body 10 and is distributed around the mounting port 15. The gasket 42 is located in the sink 16 and presses against the outer edge of the isolation film 40. Among them, the gasket 42 can be tightly fixed to the isolation film 40 through fasteners or the like. In this way, the isolation film 40 can be tightly connected to the periphery of the mounting port 15, thereby effectively preventing fluid impurities from entering the driving member 30 and damaging it.

[0050] Exemplarily, the isolation film 40 has a first thickening area 43 at the inner edge part of the avoidance port 41, and the first thickening area 43 is clamped by the stepped structure 34; the outer edge of the isolation film 40 has a second thickening area 44, and the second thickening area 44 is clamped between the gasket 42 and the valve body 10, and the inner edge of the avoidance port 41 is clamped tightly to the outer periphery of the driving member 30. When the isolation film 40 is installed on the fluid delivery valve 100, the thickening areas provided at its edge can make it be pressed tightly at the connection part, avoiding the occurrence of connection gaps between the isolation film 40 and the driving member 30, further increasing the tightness of its connection area, and enabling the fluid to effectively pass through the isolation film 40 for filtration.

[0051] As Figures 1 to 4 shown, the fluid delivery valve 100 further includes an electromagnetic driving mechanism 50. The electromagnetic driving mechanism 50 is connected to the driving member 30, and it has a housing 51. The housing 51 is fixed to the valve body 10 and presses against the gasket 42. It can be understood that the electromagnetic driving mechanism 50 is used to drive the driving member 30 in the fluid delivery valve 100. By pressing the gasket 42 located in the sink 16 through the housing 51, the valve body 10 and the electromagnetic driving mechanism 50 are effectively partitioned. The fluid impurities entering the electromagnetic driving mechanism 50 through the valve body 10 are filtered by the isolation film 40, further preventing the impurities from entering the driving member 30 and damaging it. Among them, the housing 51 of the electromagnetic driving mechanism 50 belongs to the prior art and is used to accommodate and protect components such as the coil (not shown in the figure) and the driving member 30 inside the housing 51.

[0052] In one embodiment, when the fluid delivery valve 100 is de-energized, the spring 32 is in the extended state, and the driving member 30 is forced by the spring 32 to keep the valve core 20 in the first working position. At this time, the fluid can be delivered to the first fluid delivery port 121 through the second fluid delivery port 122; after the fluid delivery valve 100 is energized, a magnetic force is generated inside the electromagnetic drive mechanism 50, magnetizing the driving member 30 to compress the spring. At this time, the valve core 20 is in the second working position, and the fluid can be delivered to the first fluid delivery port 121 through the third fluid delivery port 123. During this process, the fluid delivery valve 100 can switch the working position, control the fluid entering from the second fluid delivery port 122 and the third fluid delivery port 123, and realize pipeline switching to meet different application requirements.

[0053] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0054] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A fluid delivery valve, characterized in that: The fluid delivery valve comprises: A valve body (10) having a valve cavity (11) for fluid delivery and a fluid delivery port (12) communicating with the valve cavity (11); the valve body (10) also has a mounting port (15) communicating with the valve cavity (11); A valve core (20) is movably mounted in the valve cavity (11) and is used to switch the on / off state of the fluid delivery port (12); A driving member (30), one end of which is a driving end (31), and the other end of which is a linkage end (33) extending into the installation opening (15) and linkage with the valve core (20); The isolation membrane (40) seals the installation opening (15); the isolation membrane (40) is provided with a bypass opening (41); the driving member (30) extends into the valve core (20) through the bypass opening (41) and is sealed with the edge of the bypass opening (41).

2. The fluid delivery valve according to claim 1, characterized in that: The fluid delivery ports (12) include three, and the valve core (20) has: A first working position, connecting the first fluid delivery port (121) and the second fluid delivery port (122); The second working position connects the first fluid delivery port (121) and the third fluid delivery port (123).

3. The fluid delivery valve according to claim 1, characterized in that: The outer wall of the valve body (10) is provided with a gasket (42) which is arranged around the installation opening (15), and the gasket (42) overlaps the outer edge of the isolation membrane (40).

4. The fluid delivery valve according to claim 3, characterized in that: The fluid delivery valve further comprises: An electromagnetic drive mechanism (50) is transmission-connected to the drive member (30), the electromagnetic drive mechanism (50) having a housing (51), the housing (51) being fixed to the valve body (10) and pressing the gasket (42); The outer wall of the valve body (10) is provided with a recessed groove (16) surrounding the mounting opening (15), and the gasket (42) is located in the recessed groove (16).

5. The fluid delivery valve according to claim 1, characterized in that: The inner edge of the avoidance opening (41) is clamped tightly to the outer periphery of the driving member (30).

6. The fluid delivery valve according to claim 1, characterized in that: The valve core (20) is provided with a connecting rod (21), and the linkage end (33) of the driving member (30) is plugged and fixed to the connecting rod (21); A step structure (34) is provided between the connecting rod (21) and the driving member (30) and is positioned opposite to each other along the plugging direction, and the inner edge of the avoidance opening (41) is clamped and fixed by the step structure (34).

7. The fluid delivery valve according to claim 6, characterized in that: The isolation membrane (40) has a first thickened area (43) at the inner edge of the avoidance opening (41), and the first thickened area (43) is clamped by the step structure (34).

8. The fluid delivery valve according to claim 3, characterized in that: The outer edge of the isolation membrane (40) has a second thickened area (44), and the second thickened area (44) is clamped between the gasket (42) and the valve body (10).

9. The fluid delivery valve according to claim 1, characterized in that: The isolation membrane (40) is a deformable cone-shaped structure as a whole to adapt to the movement of the driving member (30).

10. The fluid delivery valve according to claim 9, characterized in that: The cone structure has a curved and extended generatrix shape.

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