Solenoid valve diaphragm assembly

Abstract

The utility model discloses a kind of electromagnetic valve diaphragm assemblies, including fixing frame, movable block and diaphragm, and fixing frame is equipped with guide slot;Movable block is slidably connected in guide slot, and the upper end of movable block is provided with connecting column, and the end portion of connecting column away from movable block is provided with limit board;The outer periphery of diaphragm is fixedly connected in fixing frame, and the middle part of diaphragm is provided with connecting portion, and the thickness of connecting portion is greater than the thickness of diaphragm, and connecting portion is equipped with connecting hole, and connecting column is arranged in connecting hole, and connecting portion is between movable block and limit board;Wherein, the middle part of movable block is equipped with through-hole, and through-hole extends to both ends of movable block, and the end portion of through-hole away from diaphragm is fixedly connected with filter screen, and filter screen is arranged protruding to the direction away from diaphragm.The electromagnetic valve diaphragm assembly of the utility model can improve the service life and reliability of diaphragm.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a solenoid valve diaphragm assembly. Background Technology

[0002] Magnetic control valves are common control valves in the field of fluid control. Their working principle is to open or close the control water circuit by using a magnetic switch to indirectly control the diaphragm to connect or block the inlet and outlet of the main water circuit. Since the diaphragm's movement depends on the elastic deformation capability of its material, under high-frequency or long-term reciprocating switching conditions, the diaphragm needs to repeatedly bear mechanical stress, which can easily lead to surface wear of the diaphragm, resulting in sealing failure, causing the valve to leak and fail to open or close normally, affecting its service life and reliability. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a solenoid valve diaphragm assembly that can improve the service life and reliability of the diaphragm.

[0004] According to a first aspect of the present invention, an electromagnetic valve diaphragm assembly includes a fixed frame, a movable block, and a diaphragm. The fixed frame has a guide groove. The movable block is slidably connected to the guide groove. A connecting post is provided at the upper end of the movable block, and a limiting plate is provided at the end of the connecting post away from the movable block. The outer periphery of the diaphragm is fixedly connected to the fixed frame. A connecting portion is provided in the middle of the diaphragm. The thickness of the connecting portion is greater than the thickness of the diaphragm. A connecting hole is provided in the connecting portion. The connecting post passes through the connecting hole, and the connecting portion is located between the movable block and the limiting plate. A through hole is provided in the middle of the movable block. The through hole extends to both ends of the movable block. A filter screen is fixedly connected to the end of the through hole away from the diaphragm. The filter screen protrudes in a direction away from the diaphragm.

[0005] The solenoid valve diaphragm assembly according to an embodiment of this utility model has at least the following beneficial effects: The fixed frame has a guide groove, and the movable block is slidably connected in the guide groove, allowing the movable block to slide within the fixed frame along the depth direction of the guide groove. The outer periphery of the diaphragm is fixedly connected to the fixed frame, and a connecting portion is provided in the middle of the diaphragm. The connecting portion has a connecting hole, through which a connecting post is inserted, allowing the connecting portion to be located between the movable block and the limiting plate. This allows the movable block to slide within the guide groove, causing the diaphragm to deform. By setting the thickness of the connecting portion to be greater than the thickness of the diaphragm, the structural strength of the connecting portion is enhanced, thereby reducing the tensile deformation of the diaphragm at the connecting portion, and further reducing sliding wear of the connecting portion on the connecting post, which helps extend the service life of the diaphragm and improve reliability. Additionally, by providing a filter screen in the through hole, impurities can be blocked from entering the through hole, preventing blockage. Moreover, the filter screen protrudes away from the diaphragm, reducing impurity deposition on the filter screen, which helps reduce the possibility of filter screen blockage and improves reliability.

[0006] According to some embodiments of the present invention, a plurality of first sealing rings are provided on the sidewall of the connecting hole, the plurality of first sealing rings are arranged at intervals along the axial direction of the connecting hole, and the first sealing rings abut against the sidewall of the connecting post.

[0007] According to some embodiments of the present invention, a second sealing ring and a third sealing ring are respectively provided on the two end faces of the connecting part, the second sealing ring abuts against the movable block, and the third sealing ring abuts against the limiting plate.

[0008] According to some embodiments of the present invention, a plurality of guide posts are provided at the end of the movable block away from the connecting post, and the plurality of guide posts are arranged at intervals along the circumference of the guide groove, and the guide posts abut against the side wall of the guide groove.

[0009] According to some embodiments of the present invention, a guide slope is provided at the end of the guide post away from the movable block, so that the thickness of the guide post gradually decreases in the direction away from the movable block, and the guide slope can abut against the side wall of the guide groove.

[0010] According to some embodiments of the present invention, the movable block includes a block body and a cover body, the cover body is detachably connected to the block body, the block body and the cover body form an installation groove, the installation groove is connected to a sealing gasket, and the sealing gasket can abut against the fixing frame.

[0011] According to some embodiments of the present invention, the fixing frame is provided with a protruding abutment portion, the abutment portion is continuously arranged along the circumference of the guide groove, and the abutment portion abuts against the sealing gasket.

[0012] According to some embodiments of this utility model, the block is provided with a threaded hole, and the cover is connected to a screw rod, which is threaded into the threaded hole.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the solenoid valve diaphragm assembly according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the solenoid valve diaphragm assembly according to an embodiment of the present utility model; Figure 3 for Figure 2 Enlarged view of a portion at point A; Figure 4 for Figure 2 A magnified view of section B; Figure 5 This is an exploded view of the solenoid valve diaphragm assembly according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the magnetically controlled valve of this utility model.

[0015] Figure label: Fixing bracket 100, guide groove 110, abutment part 120; Movable block 200, connecting column 210, limiting plate 211, guide column 220, guide slope 221, block 230, threaded hole 231, cover 240, screw 241, mounting groove 251, sealing gasket 252, through hole 261, filter screen 262; Diaphragm 300, connecting part 310, connecting hole 311, first sealing ring 312, second sealing ring 313, third sealing ring 314; Valve body 410, main water passage 420, inlet end 421, outlet end 422, spring 430, magnetic switch 440, control water passage 450. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] In related technologies, refer to Figure 6 The magnetically controlled valve includes a valve body 410, a solenoid valve diaphragm assembly, a spring 430, and a magnetic switch 440. The valve body 410 has a main water passage 420 and a control water passage 450. The main water passage 420 has an inlet end 421 and an outlet end 422. The solenoid valve diaphragm assembly is arranged between the inlet end 421 and the outlet end 422. The solenoid valve diaphragm assembly includes a fixed frame 100, a movable block 200, and a diaphragm 300. The fixed frame 100 is fixedly connected to the valve body 410, and the movable block 200 is slidably connected to the fixed frame 100. The movable block 200 has a through hole 261 in the middle, which connects the water inlet 421 and the control water passage 450. The outer periphery of the diaphragm 300 is fixed between the fixed frame 100 and the valve body 410. The middle part of the diaphragm 300 is fixedly connected to the movable block 200. The spring 430 is arranged between the valve body 410 and the diaphragm 300 to push the movable block 200 against the fixed frame 100, thereby blocking the water inlet 421 and the water outlet 422. One end of the control water passage 450 is connected to the magnetic switch 440, and the other end is connected to the water outlet 422.

[0021] When the magnetic switch 440 closes the control water circuit 450, water flows in from the inlet end 421 and passes through the through hole 261. At this time, the water pressure on both sides of the solenoid valve diaphragm assembly is the same, which allows the spring 430 to push the diaphragm 300 to elastically deform towards the fixed seat, so that the movable block 200 abuts against the fixed frame 100, blocking the inlet end 421 and the outlet end 422. When the magnetic switch 440 opens the control water circuit 450, water on the side of the diaphragm 300 near the control water circuit 450 can flow from the control water circuit 450 into the outlet 422, making the water pressure on the side of the diaphragm 300 near the inlet 421 greater than the water pressure near the outlet 422. This allows the water flow to push the movable block 200 to move away from the fixed frame 100 and compress the spring 430 to cause the diaphragm 300 to elastically deform, connecting the inlet 421 and the outlet 422.

[0022] Because the diaphragm 300 needs to undergo repeated elastic deformation when the magnetic valve is opened or closed, the diaphragm 300 is prone to wear at the contact point with the moving block 200, which makes the diaphragm 300 prone to failure and leakage, affecting reliability.

[0023] Therefore, this utility model proposes a solenoid valve diaphragm assembly, which can improve the service life and reliability of the diaphragm 300.

[0024] Understandably, referring to Figures 1 to 3 ,as well as Figure 5 The solenoid valve diaphragm assembly of the first aspect of this utility model includes a fixed frame 100, a movable block 200, and a diaphragm 300. The fixed frame 100 has a guide groove 110; the movable block 200 is slidably connected to the guide groove 110, and a connecting post 210 is provided at the upper end of the movable block 200. A limit plate 211 is provided at the end of the connecting post 210 away from the movable block 200; the outer periphery of the diaphragm 300 is fixedly connected to the fixed frame 100, and a connecting portion 310 is provided in the middle of the diaphragm 300 for connecting... The thickness of part 310 is greater than the thickness of diaphragm 300. The connecting part 310 has a connecting hole 311, and the connecting post 210 passes through the connecting hole 311. The connecting part 310 is located between the movable block 200 and the limiting plate 211. The movable block 200 has a through hole 261 in the middle, which extends to both ends of the movable block 200. A filter screen 262 is fixedly connected to the end of the through hole 261 away from the diaphragm 300. The filter screen 262 protrudes in the direction away from the diaphragm 300.

[0025] The fixed frame 100 has a guide groove 110, and the movable block 200 is slidably connected in the guide groove 110 so that the movable block 200 can slide within the fixed frame 100 along the depth direction of the guide groove 110. The outer periphery of the diaphragm 300 is fixedly connected to the fixed frame 100, and a connecting part 310 is provided in the middle of the diaphragm 300. The connecting part 310 has a connecting hole 311, and the connecting post 210 passes through the connecting hole 311 so that the connecting part 310 can be located between the movable block 200 and the limiting plate 211. When the movable block 200 slides in the guide groove 110, it can drive the diaphragm 300 to deform. By setting the thickness of the connecting part 310 to be greater than the thickness of the diaphragm 300, the structural strength of the connecting part 310 is enhanced, thereby reducing the amount of tensile deformation of the diaphragm 300 at the connecting part 310, and thus reducing the sliding wear of the connecting part 310 on the connecting post 210, which helps to extend the service life of the diaphragm 300 and improve reliability.

[0026] In addition, by providing a filter screen 262 in the through hole 261, impurities can be blocked from entering the through hole 261, thus preventing the through hole 261 from being blocked. Moreover, the filter screen 262 is arranged to protrude away from the membrane 300, which can reduce the deposition of impurities on the filter screen 300, thereby helping to reduce the possibility of the filter screen 300 being blocked and improving reliability.

[0027] It should be noted that by setting the thickness of the connecting part 310 to be greater than the thickness of the diaphragm 300, not only can the structural strength of the diaphragm 300 be enhanced, the wear of the connecting part 310 be slowed down, and the service life be extended, but also the connecting part 310 protrudes from the end face of the diaphragm 300, which can prevent the limiting plate 211 from contacting the end face of the diaphragm 300, thereby preventing stress concentration at the contact point between the diaphragm 300 and the limiting plate 211, thus reducing the possibility of diaphragm 300 failure due to wear and improving reliability.

[0028] In addition, the outer periphery of the diaphragm 300 can be fixedly connected to the fixing frame 100 by means of fasteners, adhesives, etc., or clamped between the fixing frame 100 and the valve body 410; the filter screen 262 can be fixed to the movable block 200 by means of adhesives, welding, etc., which will not be described in detail here.

[0029] Understandably, referring to Figure 2 and Figure 3Multiple first sealing rings 312 protrude from the sidewall of the connecting hole 311. These first sealing rings 312 are spaced apart along the axial direction of the connecting hole 311 and abut against the sidewall of the connecting post 210. The multiple first sealing rings 312 protrude from the sidewall of the connecting hole 311 and are arranged axially along the connecting hole 311. By abutting against the sidewall of the connecting post 210, the gap between the connecting part 310 and the connecting post 210 is absorbed, improving the sealing performance between them. Furthermore, the multiple first sealing rings 312 form a multi-stage sealing structure on the connecting part 310, effectively preventing water leakage from the gap between the connecting part 310 and the connecting post 210, thus improving the reliability of the solenoid valve diaphragm assembly.

[0030] It should be noted that the first sealing ring 312 can be an elastic component such as a rubber component or a silicone component, so that the first sealing ring 312 can deform and fit against the side wall of the connecting post 210, thereby absorbing the gap between the connecting part 310 and the connecting post 210 and improving the sealing performance.

[0031] In addition, the first sealing ring 312 can be snapped onto the side wall of the connecting hole 311, or it can be integrally formed with the connecting part 310, which will not be elaborated here.

[0032] Specifically, refer to Figure 2 and Figure 3 A second sealing ring 313 and a third sealing ring 314 protrude from both ends of the connecting portion 310, respectively. The second sealing ring 313 abuts against the movable block 200, and the third sealing ring 314 abuts against the limiting plate 211. The second sealing ring 313 and the third sealing ring 314 are respectively arranged on both ends of the connecting portion 310. By setting the second sealing ring 313 to abut against the movable block 200 and the third sealing ring 314 to abut against the limiting plate 211, both ends of the connecting portion 310 can be kept sealed, which can reduce the possibility of water flowing into the connecting hole 311 and improve the sealing performance of the diaphragm 300.

[0033] The second sealing ring 313 and the third sealing ring 314 can be elastic components such as rubber or silicone parts, or they can be integrally formed with the connecting part 310. These will not be described in detail here.

[0034] Specifically, refer to Figure 2 and Figure 3The first sealing ring 312, the second sealing ring 313, and the third sealing ring 314 all have semi-circular cross-sectional shapes. By setting the cross-sections of the first sealing ring 312, the second sealing ring 313, and the third sealing ring 314 to be semi-circular, they can all deform and fit uniformly against the contact surface, effectively dispersing contact stress and facilitating the absorption of gaps between them and the contact surface. This not only improves the tightness and reliability of the seal but also reduces the risk of damage due to excessive compression of the first sealing ring 312, the second sealing ring 313, and the third sealing ring 314, further extending the service life of the sealing rings and thus ensuring the sealing performance of the solenoid valve diaphragm assembly.

[0035] Understandably, referring to Figure 2 and Figure 5 Multiple guide posts 220 are provided at the end of the movable block 200 away from the connecting post 210. These guide posts 220 are spaced apart circumferentially along the guide groove 110 and abut against the sidewall of the guide groove 110. Since the multiple guide posts 220 are all located at the end of the movable block 200 away from the connecting post 210, their abutment against the sidewall of the guide groove 110 guides the sliding direction of the movable block 200 within the guide groove 110, reducing the possibility of the movable block 200 shifting or wobbling during sliding. This stabilizes the connecting part 310 between the movable block 200 and the limiting plate 211, reducing the possibility of friction between the movable block 200 or the limiting plate 211 and the connecting part 310, thus helping to extend the service life of the diaphragm 300 and improve reliability.

[0036] Specifically, refer to Figure 2 and Figure 5 The guide post 220 has a guide slope 221 at the end away from the movable block 200, so that the thickness of the guide post 220 gradually decreases in the direction away from the movable block 200. The guide slope 221 can abut against the side wall of the guide groove 110. By providing the guide slope 221 at the end of the guide post 220 away from the movable block 200, the thickness of the guide post 220 gradually decreases in the direction away from the movable block 200. By extending multiple guide posts 220 into the guide groove 110, the guide slope 221 can abut against the side wall of the guide groove 110, which can guide the movable block 200 to be smoothly arranged in the guide groove 110. This makes it easier to install the movable block 200 on the fixed frame 100, avoids the movable block 200 getting stuck at the end of the guide groove 110, and improves the convenience of assembly.

[0037] It should be noted that the guide ramp 221 is arranged on the outside of the guide post 220 so that the guide ramp 221 can abut against the side wall of the guide groove 110 to position the multiple guide posts 220 in the guide groove 110 and improve the convenience of installation.

[0038] Understandably, referring to Figure 2 , Figure 4 and Figure 5 The movable block 200 includes a block body 230 and a cover body 240. The cover body 240 is detachably connected to the block body 230. The block body 230 and the cover body 240 form a mounting groove 251. A sealing gasket 252 is connected to the mounting groove 251, and the sealing gasket 252 can abut against the fixing frame 100. The block body 230 and the cover body 240 are detachably connected, and the block body 230 and the cover body 240 form a mounting groove 251 to accommodate the sealing gasket 252, so that the sealing gasket 252 can be stably placed in the movable block 200, and the sealing gasket 252 can abut against the fixing frame 100, thereby enhancing the sealing performance between the fixing frame 100 and the movable block 200 and improving the reliability of the solenoid valve diaphragm assembly.

[0039] In addition, by setting the mounting groove 251 to accommodate the sealing gasket 252, not only can the position of the sealing gasket 252 be stabilized, but the installation and arrangement of the sealing gasket 252 can also be facilitated, thus improving the convenience of installation.

[0040] Specifically, refer to Figure 2 , Figure 4 and Figure 5 The fixed frame 100 has a protruding abutment portion 120, which is continuously arranged along the circumference of the guide groove 110 and abuts against the sealing gasket 252. The abutment portion 120, by being continuously arranged along the circumference of the guide groove 110 and abutting against the sealing gasket 252, enhances the sealing performance between the movable block 200 and the fixed frame 100, prevents water leakage from the contact area between the movable block 200 and the fixed frame 100, and improves the opening and closing stability of the solenoid valve diaphragm assembly.

[0041] Specifically, refer to Figure 2 and Figure 5 The block 230 has a threaded hole 231, and the cover 240 is connected to a screw 241, which is threaded into the threaded hole 231. By setting the screw 241 to be threaded into the threaded hole 231, not only can the block 230 and the cover 240 be easily assembled together, improving the installation convenience of the movable block 200, but the sealing gasket 252 can also be fixed in the mounting groove 251, preventing the sealing gasket 252 from falling out of the mounting groove 251, thus improving the reliability of the movable block 200.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A solenoid valve diaphragm assembly, characterized in that, include: The mounting bracket is equipped with guide grooves; A movable block is slidably connected to the guide groove. A connecting post is provided at the upper end of the movable block, and a limit plate is provided at the end of the connecting post away from the movable block. A diaphragm is fixedly connected to the fixing frame on its outer periphery. A connecting part is provided in the middle of the diaphragm. The thickness of the connecting part is greater than the thickness of the diaphragm. A connecting hole is provided in the connecting part. A connecting post passes through the connecting hole. The connecting part is located between the movable block and the limiting plate. The movable block has a through hole in the middle, which extends to both ends of the movable block. A filter screen is fixedly connected to the end of the through hole away from the membrane, and the filter screen protrudes in a direction away from the membrane.

2. The solenoid valve diaphragm assembly according to claim 1, characterized in that, The sidewall of the connecting hole is provided with a plurality of first sealing rings protruding from it. The plurality of first sealing rings are arranged at intervals along the axial direction of the connecting hole, and the first sealing rings abut against the sidewall of the connecting post.

3. The solenoid valve diaphragm assembly according to claim 2, characterized in that, The two ends of the connecting part are respectively provided with a second sealing ring and a third sealing ring. The second sealing ring abuts against the movable block, and the third sealing ring abuts against the limiting plate.

4. The solenoid valve diaphragm assembly according to claim 1, characterized in that, The movable block has multiple guide posts at its end away from the connecting post. The multiple guide posts are arranged at intervals along the circumference of the guide groove, and the guide posts abut against the side wall of the guide groove.

5. The solenoid valve diaphragm assembly according to claim 4, characterized in that, The guide post has a guide slope at the end away from the movable block, so that the thickness of the guide post gradually decreases in the direction away from the movable block, and the guide slope can abut against the side wall of the guide groove.

6. The solenoid valve diaphragm assembly according to claim 1, characterized in that, The movable block includes a block body and a cover body. The cover body is detachably connected to the block body. The block body and the cover body form an installation groove. The installation groove is connected to a sealing gasket, which can abut against the fixing frame.

7. The solenoid valve diaphragm assembly according to claim 6, characterized in that, The fixing frame has a protruding abutment portion, which is continuously arranged along the circumference of the guide groove and abuts against the sealing gasket.

8. The solenoid valve diaphragm assembly according to claim 6, characterized in that, The block has a threaded hole, and the cover is connected to a screw rod, which is threaded into the threaded hole.

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