diaphragm valve
By introducing a guide section into the diaphragm valve as the initial yield point of the diaphragm, the elastic deformation of the diaphragm is achieved, which solves the problem of increased coil power demand under high-voltage conditions, improves the working performance and stability of the diaphragm valve, and reduces production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JIAYIN ELECTRICAL & MECHANICAL TECH CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-26
AI Technical Summary
Existing diaphragm valves are susceptible to water pressure fluctuations under high-pressure conditions, which can lead to excessive temperature rise in the solenoid coil, increased coil power demand, and consequently affect valve performance stability and service life.
By using a guide section on the diaphragm as the initial yield point, the elastic deformation of the diaphragm is used to guide the overall deformation of the diaphragm, thereby reducing the movement resistance of the movable iron core, reducing the coil power requirement of the winding coil, and reducing assembly costs through a split movable iron core and interference fit.
It improves the working performance and stability of diaphragm valves, enhances reliability and repeatability, extends service life, and reduces production costs.
Smart Images
Figure CN224414418U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of electromagnetic valves, and in particular relates to a diaphragm valve. Background Technology
[0002] In high-pressure water inlet conditions, the valve orifice of a direct-acting solenoid valve needs to be reduced accordingly to balance the pressure. However, if a large valve orifice and a long stroke design are required simultaneously, the coil power must be increased. However, increasing the coil power will lead to excessive temperature rise, which will cause two key problems: first, the high temperature will easily burn out the coil; second, the temperature rise will weaken the electromagnetic force, ultimately causing unstable valve performance.
[0003] Currently, the performance of existing diaphragm valves is easily affected by water pressure fluctuations. When water pressure changes, additional pressure is applied to the push rod assembly of the solenoid valve, significantly increasing the resistance to valve core movement. In this case, the solenoid coil of the diaphragm valve needs to output a larger driving force to overcome the resistance. This not only increases the power requirements of the coil but may also lead to increased temperature rise, decreased efficiency, and even affect the operational stability and service life of the diaphragm valve. Utility Model Content
[0004] In view of this, it is necessary to provide a diaphragm valve for solving the above-mentioned technical problems.
[0005] A diaphragm valve, the diaphragm valve comprising:
[0006] The valve body has a valve port.
[0007] The iron core assembly includes a movable iron core, on which a plug is connected, and the plug can control the opening / closing of the valve port under the action of the movable iron core;
[0008] A winding coil is fitted onto the movable iron core. The winding coil can attract or release the movable iron core to drive the movable iron core to reciprocate relative to the valve body.
[0009] A diaphragm is housed within the valve body. The first end of the diaphragm is fitted onto the movable iron core, and the second end of the diaphragm is pressed and limited by the valve body to prevent the medium inside the valve body from entering the gap between the winding coil and the movable iron core.
[0010] The diaphragm has a guide portion formed on it, which is located between the first end and the second end, and the diaphragm is capable of elastic deformation with the guide portion as the initial yield point.
[0011] Understandably, the diaphragm undergoes elastic deformation with the guide section as the initial yield point, enabling the guide section to effectively guide the overall deformation of the diaphragm. This reduces the motion resistance of the moving iron core, thereby reducing the coil power required to drive the moving iron core and improving the working performance of the diaphragm valve. On the other hand, it ensures the consistency of the diaphragm's deformation location each time, enhancing the reliability and repeatability of the diaphragm valve, thus improving the working stability and service life of the diaphragm valve.
[0012] In one embodiment, the diaphragm is partially recessed toward the winding coil and forms the guide portion.
[0013] In one embodiment, the guide portion is arc-shaped.
[0014] It is understandable that using an arc-shaped guide to guide the overall deformation of the diaphragm can achieve a uniform distribution of stress in the guide, avoid stress concentration that could lead to breakage of the guide, and thus improve the service life of the diaphragm.
[0015] In one embodiment, the diaphragm further includes a first bent portion and a second bent portion, the first bent portion and the second bent portion being bent toward the winding coil, wherein the first end is disposed on the first bent portion and the second end is disposed on the second bent portion;
[0016] The guide portion is located at the position where the first bend portion and the second bend portion connect.
[0017] In one embodiment, the movable iron core includes a first movable iron core component and a second movable iron core component, wherein the first movable iron core component is housed in the valve body and connected to the second movable iron core component;
[0018] The plug is installed on the end of the first movable iron core component away from the second movable iron core component.
[0019] In one embodiment, the material of the first movable core component is configured as nylon, polypropylene, polyoxymethylene, or polyphenylene sulfide.
[0020] It is understandable that by utilizing the material characteristics of the first movable iron core component, on the one hand, the corrosion resistance of the first movable iron core component can be improved, thus extending its service life; on the other hand, the material cost of the movable iron core can be reduced, thus reducing production costs.
[0021] In one embodiment, the first end is pressed and limited by the first movable iron core component and the second movable iron core component.
[0022] It is understandable that the first and second movable iron core components are used to press and limit the first end of the diaphragm, which can improve the reliability of the diaphragm when it is assembled on the movable iron core and play a role in positioning and preventing loosening of the diaphragm on the movable iron core.
[0023] In one embodiment, a support is formed on the second movable core component, the support abutting and limiting the diaphragm for supporting the diaphragm.
[0024] It is understandable that a support is used to assist in supporting the diaphragm, which can help position the diaphragm on the movable iron core and prevent it from loosening.
[0025] In one embodiment, the first movable core component and the second movable core component are connected by an interference fit.
[0026] It is understandable that an interference fit is used to achieve the assembly connection between the first and second movable iron core components. This facilitates the assembly of the first and second movable iron core components and reduces assembly costs.
[0027] In one embodiment, the valve body also has an inlet, a first outlet, and a second outlet;
[0028] The valve port includes a first valve port and a second valve port. The inlet and the first outlet are connected through the first valve port, and the inlet and the second outlet are connected through the second valve port.
[0029] The plug can selectively block either the first valve port or the second valve port.
[0030] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0031] The diaphragm valve claimed in this application has a diaphragm that undergoes elastic deformation with the guide portion as the initial yield point. This guide portion effectively guides the overall deformation of the diaphragm, which reduces the movement resistance of the moving iron core, thereby reducing the coil power required to drive the moving iron core and improving the working performance of the diaphragm valve. On the other hand, it ensures the consistency of the diaphragm deformation location each time, enhancing the reliability and repeatability of the diaphragm valve, thereby improving the working stability and service life of the diaphragm valve. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the diaphragm valve structure provided in this application.
[0034] Figure 2 This is a cross-sectional view of a diaphragm valve provided in an embodiment of this application.
[0035] Figure 3 for Figure 2 Cross-sectional view of the diaphragm.
[0036] Figure 4 This is a cross-sectional view of a diaphragm valve provided in another embodiment of this application.
[0037] Figure 5 for Figure 4 Exploded view of the moving iron core.
[0038] Reference numerals: 100, diaphragm valve; 10, valve body; 11, valve port; 111, first valve port; 112, second valve port; 12, inlet; 13, first outlet; 14, second outlet; 20, core assembly; 21, movable core; 210, plug; 211, first movable core component; 212, second movable core component; 2121, support; 22, fixed core; 23, core spring; 30, winding coil; 31, magnetic conductor; 32, magnetic plate; 40, diaphragm; 410, first bend; 420, second bend; 41, first end; 42, second end; 43, guide; 101, gap. Detailed Implementation
[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0040] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.
[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0042] like Figure 1 , Figure 2 and Figure 4 As shown, the diaphragm valve 100 provided in this application includes a valve body 10, an iron core assembly 20, a winding coil 30, and a diaphragm 40. A valve port 11 is formed on the valve body 10. The iron core assembly 20 includes a movable iron core 21, on which a plug 210 is connected. The plug 210 can control the opening / closing of the valve port 11 under the action of the movable iron core 21. The winding coil 30 is fitted onto the movable iron core 21, and the winding coil 30 can attract or release the movable iron core 21 to drive the movable iron core 21 to move relative to the valve. The valve body 10 reciprocates; a diaphragm 40 is housed within the valve body 10, with its first end 41 fitted onto the movable iron core 21, and its second end 42 pressed and limited by the valve body 10 to prevent the medium inside the valve body 10 from entering the gap 101 between the winding coil 30 and the movable iron core 21; wherein, a guide portion 43 is formed on the diaphragm 40, the guide portion 43 being positioned between the first end 41 and the second end 42, and the diaphragm 40 is capable of elastic deformation with the guide portion 43 as the initial yield point. That is to say, the guide portion 43 on the diaphragm 40 is the part that first begins to deform.
[0043] As can be seen from the above, when the diaphragm valve 100 of this application is working, the diaphragm 40 undergoes elastic deformation with the guide portion 43 as the initial yield point, so that the guide portion 43 can effectively guide the diaphragm 40 to deform as a whole. This reduces the motion resistance of the movable iron core 21, thereby reducing the coil power of the winding coil 30 required to drive the movable iron core 21 and improving the working performance of the diaphragm valve 100. On the other hand, it ensures the consistency of the deformation part of the diaphragm 40 each time, enhances the reliability and repeatability of the diaphragm valve 100, and thus improves the working stability and service life of the diaphragm valve 100.
[0044] like Figure 2 , Figure 4 As shown, in one embodiment, the valve body 10 also has an inlet 12, a first outlet 13, and a second outlet 14; the valve port 11 includes a first valve port 111 and a second valve port 112, the inlet 12 and the first outlet 13 are connected through the first valve port 111, and the inlet 12 and the second outlet 14 are connected through the second valve port 112; and the plug 210 can selectively block the first valve port 111 or the second valve port 112. That is to say, when the diaphragm valve 100 of this embodiment is working, it can switch between the corresponding passage connected between the inlet 12 and the first outlet 13 and the corresponding passage connected between the inlet 12 and the second outlet 14. In other words, the diaphragm valve 100 is specifically a two-position three-way diaphragm solenoid valve, which can be applied to coffee machines, sweeping machines, and other related electrical appliances.
[0045] like Figure 4 , Figure 5 As shown, in one embodiment, the movable core 21 includes a first movable core segment 211 and a second movable core segment 212. The first movable core segment 211 is housed within the valve body 10 and connected to the second movable core segment 212. Furthermore, a plug 210 is mounted on the end of the first movable core segment 211 away from the second movable core segment 212. In other words, this embodiment designs the movable core 21 as a two-section, split structure.
[0046] In this embodiment, the material of the first movable iron core component 211 is configured as nylon, polypropylene, polyoxymethylene or polyphenylene sulfide, preferably nylon. By utilizing the characteristics of the above materials, on the one hand, the corrosion resistance of the first movable iron core component 211 can be improved, thereby extending its service life; on the other hand, the material cost of the movable iron core 21 can be reduced, thereby reducing production costs.
[0047] like Figure 4 As shown, in this embodiment, the first movable core component 211 and the second movable core component 212 are connected by an interference fit, thereby achieving the assembly connection between the first movable core component 211 and the second movable core component 212. This facilitates the assembly of the first movable core component 211 and the second movable core component 212, reducing assembly costs. Here, the first movable core component 211 is partially inserted into the second movable core component 212, achieving the interference fit between them. It can be understood that in other embodiments, the second movable core component 212 can also be partially inserted into the first movable core component 211 to achieve the interference fit.
[0048] like Figure 3 , Figure 4As shown, in this embodiment, the first end 41 of the diaphragm 40 is pressed and limited by the first movable iron core component 211 and the second movable iron core component 212. That is to say, in addition to the tight fit of the first end 41 of the diaphragm 40 to the movable iron core 21, this embodiment also achieves the pressing and limiting of the first end 41, thereby improving the reliability of the first end 41 of the diaphragm 40 when assembled on the movable iron core 21, and playing a role in positioning and preventing loosening of the diaphragm 40 on the movable iron core 21.
[0049] like Figure 4 , Figure 5 As shown, in this embodiment, a support 2121 is formed on the second movable iron core component 212. The support 2121 abuts and limits the diaphragm 40, thereby supporting the diaphragm 40 and helping to position and prevent loosening of the diaphragm 40 on the movable iron core 21. It should be noted that the medium introduced into the valve body 10 will press down on the diaphragm 40, so that the diaphragm 40 abuts against the support 2121 of the second movable iron core component 212.
[0050] like Figure 2 , Figure 4 As shown, in one embodiment, the core assembly 20 further includes a fixed core 22 and a core spring 23. The core spring 23 is pre-compressed and installed between the fixed core 22 and the movable core 21, so that when the winding coil 30 is de-energized, the movable core 21 can drive the plug 210 to block the first valve port 111 under the push of the core spring 23; while when the winding coil 30 is energized, the magnetic field generated by the energized winding coil 30 will drive the movable core 21 to compress the core spring 23 and block the second valve port 112 with the plug 210.
[0051] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the diaphragm valve 100 further includes a magnetic conductor 31 and a magnetic plate 32. The winding coil 30 is housed within the magnetic conductor 31 and is limited by the magnetic plate 32 connected to the magnetic conductor 31. Utilizing the material properties of the magnetic conductor 31 and the magnetic plate 32, the magnetic field generated by the winding coil 30 after being energized can be enhanced. Here, the second end 42 of the diaphragm 40 is pressed and limited onto the magnetic plate 32 by the valve body 10.
[0052] like Figure 3 As shown, in one embodiment, the diaphragm 40 is recessed towards the winding coil 30 and forms the aforementioned guide portion 43. This process does not increase the amount of material used in manufacturing the diaphragm 40. Specifically, the diaphragm 40 can be made of rubber and can be integrally injection molded. It is understood that in other embodiments, it can also be manufactured by reducing the thickness of the portion where the guide portion 43 is located.
[0053] like Figure 3 As shown, in this embodiment, the guide portion 43 is arc-shaped. That is, the diaphragm 40 can be guided to deform as a whole by the arc-shaped guide portion 43, which can achieve uniform stress distribution in the guide portion 43, avoid stress concentration and breakage of the guide portion 43, and improve the service life of the diaphragm 40.
[0054] like Figure 3 As shown, in this embodiment, the diaphragm 40 further includes a first bent portion 410 and a second bent portion 420. The first bent portion 410 and the second bent portion 420 are bent toward the winding coil 30. A first end portion 41 is disposed on the first bent portion 410, and a second end portion 42 is disposed on the second bent portion 420. A guide portion 43 is disposed at the connection between the first bent portion 410 and the second bent portion 420, thereby ensuring that the diaphragm 40 can undergo elastic deformation with the guide portion 43 as the initial yield point. It should be noted that when the travel of the movable core 21 is large, deformation guide portions (not shown) can also be formed on the first bent portion 410 and / or the second bent portion 420. This allows the deformation guide portions to guide the deformation of the corresponding first bent portion 410 and / or the second bent portion 420 during the elastic deformation of the diaphragm 40 driven by the movable core 21, further reducing the resistance to movement of the movable core 21.
[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0056] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.
Claims
1. A diaphragm valve, characterized in that, Diaphragm valve (100) includes: The valve body (10) has a valve port (11) formed thereon; The iron core assembly (20) includes a movable iron core (21), on which a plug (210) is connected, and the plug (210) can control the opening / closing of the valve port (11) under the drive of the movable iron core (21); A winding coil (30) is fitted onto the movable iron core (21). The winding coil (30) can attract or release the movable iron core (21) to drive the movable iron core (21) to reciprocate relative to the valve body (10). A diaphragm (40) is housed within the valve body (10). The first end (41) of the diaphragm (40) is fitted onto the movable iron core (21), and the second end (42) of the diaphragm (40) is pressed and limited by the valve body (10) to prevent the medium inside the valve body (10) from entering the gap (101) between the winding coil (30) and the movable iron core (21). The diaphragm (40) has a guide portion (43) formed on it. The guide portion (43) is located between the first end (41) and the second end (42). The diaphragm (40) can undergo elastic deformation with the guide portion (43) as the initial yield point under the drive of the movable iron core (21).
2. The diaphragm valve according to claim 1, characterized in that, The diaphragm (40) is partially recessed in the direction of the winding coil (30) and forms the guide portion (43).
3. The diaphragm valve according to claim 2, characterized in that, The guide part (43) is arc-shaped.
4. The diaphragm valve according to claim 1, characterized in that, The diaphragm (40) further includes a first bent portion (410) and a second bent portion (420), the first bent portion (410) and the second bent portion (420) are bent toward the winding coil (30), wherein the first end (41) is disposed on the first bent portion (410) and the second end (42) is disposed on the second bent portion (420); The guide portion (43) is located at the position where the first bending portion (410) and the second bending portion (420) are connected.
5. The diaphragm valve according to claim 1, characterized in that, The movable iron core (21) includes a first movable iron core component (211) and a second movable iron core component (212). The first movable iron core component (211) is housed in the valve body (10) and connected to the second movable iron core component (212). The plug (210) is installed on the end of the first movable iron core component (211) away from the second movable iron core component (212).
6. The diaphragm valve according to claim 5, characterized in that, The material of the first active iron core component (211) is configured as nylon, polypropylene, polyoxymethylene or polyphenylene sulfide.
7. The diaphragm valve according to claim 5, characterized in that, The first end (41) is pressed and limited by the first movable iron core component (211) and the second movable iron core component (212).
8. The diaphragm valve according to claim 5 or 7, characterized in that, The second movable iron core component (212) has a support (2121) formed thereon, the support (2121) abutting and limiting the diaphragm (40) to support the diaphragm (40).
9. The diaphragm valve according to claim 5, characterized in that, The first movable iron core component (211) and the second movable iron core component (212) are connected by an interference fit.
10. The diaphragm valve according to claim 1, characterized in that, The valve body (10) also has an inlet (12), a first outlet (13), and a second outlet (14); The valve port (11) includes a first valve port (111) and a second valve port (112). The inlet (12) is connected to the first outlet (13) through the first valve port (111), and the inlet (12) is connected to the second outlet (14) through the second valve port (112). The plug (210) can selectively block the first valve port (111) or the second valve port (112).