Anti-falling valve diaphragm

Abstract

The utility model discloses an anti-drop valve diaphragm, which relates to the field of waterway valve diaphragm assemblies, and comprises a valve seat provided with a first cavity, the valve seat is provided with a liquid inlet arranged along a first direction and a liquid outlet arranged along a second direction, a diaphragm assembly is arranged in the first cavity, and the diaphragm assembly comprises a rod member. The rod component is configured to move in the axis direction of the rod component and comprises a first rod piece and a protruding piece arranged at one end of the first rod piece. The sleeve component comprises a first through hole, the first rod piece penetrates through the first through hole, a connecting part is arranged on the outer surface of the sleeve component, and the diameter of the protruding piece is larger than that of the first through hole; the membrane component comprises a membrane body and a connecting component arranged on the membrane body, and the connecting component is provided with a connecting groove corresponding to the connecting part; in the state that the rod component is connected with the membrane component through the sleeve component, the protruding piece makes contact with the bottom of the connecting groove, and the connecting part of the sleeve component is embedded in the connecting groove.

Description

Technical Field

[0001] The utility model relates to the field of waterway valve membrane assemblies, and particularly to a valve membrane sheet that prevents detachment. Background Art

[0002] In a fluid control system, as a key component, the valve's performance directly affects the stability and safety of the system. Especially in some occasions with high pressure, high temperature or corrosive media, the stability and sealing performance of the valve membrane sheet are particularly important. The existing valve membrane sheet designs often use simple gluing methods, which are likely to cause loosening of the connection or even detachment of the membrane sheet due to factors such as vibration, temperature change or medium corrosion during long-term use, thus leading to serious problems such as leakage and system failure. Content of the Utility Model

[0003] The purpose of the utility model is to provide a valve membrane sheet that prevents detachment, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A valve membrane sheet that prevents detachment, the valve includes a valve seat provided with a first cavity, the valve seat is provided with a liquid inlet arranged along a first direction and a liquid outlet arranged along a second direction, a membrane assembly is arranged inside the first cavity, and the membrane assembly includes:

[0006] A rod member, the rod member is configured to be movable along the axis direction of the rod member, the rod member includes a first rod and a convex portion arranged at one end of the first rod;

[0007] A sleeve member, the sleeve member includes a first through hole, the first rod passes through the first through hole, a connecting portion is arranged on the outer surface of the sleeve member, and the diameter size of the convex portion is larger than the diameter size of the first through hole;

[0008] A membrane member, the membrane member includes a membrane body and a connecting member arranged on the membrane body, and the connecting member is correspondingly provided with a connecting groove for the connecting portion;

[0009] Wherein, in the state where the rod member connects the membrane member through the sleeve member, the convex portion contacts the bottom of the connecting groove, and the connecting portion of the sleeve member is embedded in the connecting groove.

[0010] Preferably, a first thread is arranged on the surface of the connecting portion, and a second thread is arranged on the inner wall of the connecting groove to be paired with the first thread.

[0011] Preferably, the convex portion is arranged in a cylindrical shape, and the convex portion is provided with a first plane and a second plane;

[0012] Wherein, in the state where the rod member connects the membrane member through the sleeve member, the second plane contacts the connecting groove, and the first plane contacts the sleeve member.

[0013] Preferably, the material of the convex part is magnetic;

[0014] An adsorbent made of ferromagnetic material is inlaid on the surface of the sleeve member close to the convex part;

[0015] Wherein, when the rod member is connected to the membrane member through the sleeve member, the convex part acts on the adsorbent.

[0016] Preferably, a disassembly part is fixedly arranged at one end of the connecting part. The top view of the disassembly part is arranged in a regular hexagon. When the sleeve member needs to be disassembled, a tool such as a wrench can be used to clamp and disassemble the disassembly part.

[0017] Preferably, a limiting notch is arranged at the bottom of the second plane, and a limiting protrusion is arranged at the bottom of the connecting groove;

[0018] Wherein, when the rod member is connected to the membrane member through the sleeve member, the limiting protrusion is inlaid in the limiting notch.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] The present utility model discloses a design of an anti-detachment valve diaphragm. The valve is composed of a valve seat, a diaphragm assembly and a specific configuration. A first cavity is arranged in the valve seat, and a liquid inlet and a liquid outlet are arranged, which are arranged in different directions respectively. The diaphragm assembly is placed in the cavity and is composed of a rod member, a sleeve member and a membrane member. The rod member can move along its axis and includes a first rod and a convex part. The diameter of the convex part is larger than the first through hole of the sleeve member to ensure a stable connection. The outer surface of the sleeve member has a connecting part corresponding to the connecting groove of the membrane member. The membrane member is made of an elastic material (such as rubber) and can be closely attached to adjacent components to form a closed fluid channel, adapt to fluid pressure changes, and maintain tightness. When the fluid pressure changes, the membrane body can deform slightly to fit or return to its original state to maintain the seal. The movement of the rod member can control the position of the membrane body to realize the switching between sealing and opening. This movement can be regulated by a threaded component. When the sleeve member is connected to the membrane member, the convex part contacts the bottom of the connecting groove, and the connecting part of the sleeve member is inlaid in the connecting groove, preventing the membrane member from falling off from the end face of the rod member and ensuring the stability and reliability of the valve. Description of the Drawings

[0021] Figure 1 It is an external view of the valve in an embodiment.

[0022] Figure 2 It is a partial cross-sectional view of the valve in an embodiment.

[0023] Figure 3 It is a structure diagram of the diaphragm in an embodiment.

[0024] Figure 4 It is a schematic structural diagram of the rod member in an embodiment.

[0025] Figure 5 Schematic diagram of the appearance of the end of the rod member in an embodiment Detailed implementation manners

[0026] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0027] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0028] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "middle part", "bottom", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "both sides", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this patent.

[0029] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "assembly" should be understood in a broad sense. For example, it can be fixedly connected and arranged, or detachably connected and arranged, or integrally connected and arranged. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] Please refer to Figures 1 to 3 , an embodiment discloses a valve diaphragm for preventing detachment. As Figure 1 shown, the valve includes a valve seat 1 provided with a first cavity, and the valve seat is provided with a liquid inlet arranged in a first direction and a liquid outlet 3 arranged in a second direction. Figure 1 The position A in Figure 2 is the liquid inlet. Continuing to refer to Figure 3 and Figure 3 , a diaphragm assembly 2 is arranged inside the first cavity. The diaphragm assembly 2 includes a rod member 21, and the rod member 21 is configured to be movable along the axial direction of the rod member 21. As Figure 4, the rod member includes a first rod 211 and a convex portion 212 disposed at one end of the first rod 211; the sleeve member 22 includes a first through hole, the first rod 211 passes through the first through hole, a connecting portion is disposed on the outer surface of the sleeve member 22, and the diameter of the convex portion 212 is larger than the diameter of the first through hole; the membrane member 23 includes a membrane body and a connecting member disposed on the membrane body, and the connecting member is correspondingly provided with a connecting groove for the connecting portion; wherein, when the rod member 21 is connected to the membrane member 23 through the sleeve member, the convex portion 212 contacts the bottom of the connecting groove, and the connecting portion of the sleeve member 22 is embedded in the connecting groove.

[0031] In the above embodiment, a partial area of the membrane member is made of an elastic material, such as rubber. When the membrane member is installed in a fluid control system, the membrane body will be closely attached to adjacent components (such as a valve seat, a sleeve member, etc.) to form a closed fluid channel. Since the membrane body is made of an elastic material, it can adapt to changes in fluid pressure and maintain tightness. When the fluid pressure increases, the membrane body will undergo a slight deformation to better fit adjacent components; when the fluid pressure decreases, the membrane body will return to its original shape and continue to maintain tightness; when it is not necessary to seal the valve through the membrane body, the position of the membrane body is moved by moving the rod member 21, so that the membrane body is separated from adjacent components. In one embodiment, the movement of the position of the rod member can be controlled by a threaded assembly. Please refer to Figure 1 , at position B thereof is a threaded assembly, the structure of which is known to those skilled in the art, and will not be elaborated in detail in this application. The rod member 21 is connected to the membrane member 23 through the sleeve member 22, and the position of the convex portion 212 is limited by arranging a connecting groove corresponding to the connecting portion through the connecting member, preventing the membrane member 23 from falling off from the end face of the rod member 21.

[0032] Please continue to refer to Figure 3 , further, a first thread is arranged on the surface of the connecting portion, and a second thread is arranged on the inner wall of the connecting groove to be paired with the first thread. When the sleeve member and the membrane member are assembled, the first thread and the second thread will bite with each other to form a firm and sealed connection. The tight fit of the first thread and the second thread makes a firm connection formed between the sleeve member and the membrane member. Even when the fluid pressure changes, this connection can remain firm and will not fall off or become loose.

[0033] Please continue to refer to Figure 4, Further, the protruding portion 212 is arranged in a cylindrical shape and has a first plane and a second plane; wherein, when the rod member 21 is connected to the membrane member 23 through the sleeve member, the second plane contacts the connection groove and the first plane contacts the sleeve member 22. When the rod member 21 is connected to the membrane member 23 through the sleeve member 22, the protruding portion 212 plays a key connection and positioning role. Specifically, when the protruding portion 212 passes through the first through hole of the sleeve member 22 and contacts the connection groove of the membrane member 23, the second plane will closely fit against the bottom of the connection groove, ensuring a stable connection between the protruding portion 212 and the membrane member 23. At the same time, the first plane contacts the corresponding part of the sleeve member 22.

[0034] In one embodiment, the material of the protruding portion 212 is magnetic; an adsorbent made of ferromagnetic material is inlaid on the surface of the sleeve member 22 close to the protruding portion 212; wherein, when the rod member 21 is connected to the membrane member 23 through the sleeve member, the protruding portion 212 acts on the adsorbent. Specifically, the selection of magnetic materials may include various alloys with strong magnetism, such as neodymium iron boron, etc. These materials can ensure that the protruding portion 212 generates a stable attraction to ferromagnetic substances without external force. An adsorbent made of ferromagnetic material is inlaid on the surface of the sleeve member 22 close to the protruding portion 212. The ferromagnetic material can be iron, cobalt, nickel and their alloys. These adsorbents are arranged on the surface of the sleeve member 22 and generate a strong magnetic attraction with the protruding portion 212. When the rod member 21 is connected to the membrane member 23 through the sleeve member 22, the protruding portion 212 acts on the adsorbent on the sleeve member 22. Since the protruding portion 212 is magnetic and the adsorbent is ferromagnetic, a strong magnetic attraction will be generated between them. This attraction not only ensures a stable connection between the protruding portion 212 and the sleeve member 22, but also enables the rod member 21 to be firmly connected to the sleeve member 22, thereby realizing a stable connection with the membrane member 23 and preventing detachment.

[0035] Please continue to refer to Figure 3 , Further, a disassembly portion is fixedly arranged at one end of the connecting portion, and the top view of the disassembly portion is arranged in a regular hexagon. When it is necessary to disassemble the sleeve member 22, a wrench-like tool can be used to clamp and disassemble the disassembly portion.

[0036] Please refer to Figure 5 , A limiting notch is arranged at the bottom of the second plane, as Figure 5As shown, there is a limiting notch at position C of it, and a limiting protrusion is arranged at the bottom of the connecting groove; wherein, when the rod member 21 is connected to the membrane member 23 through the sleeve member, the limiting protrusion is embedded in the limiting notch, and while the second plane of the protrusion portion 212 contacts the bottom of the connecting groove, the limiting protrusion begins to interact with the limiting notch. Due to the matching of their shapes and sizes, the limiting protrusion can be embedded in the limiting notch. At this time, the protrusion portion 212 will not rotate easily. At the same time, due to the magnetic adsorption force between the protrusion portion 212 and the sleeve member 22, the sleeve member 22 and the membrane member 23 will not rotate and fall off easily.

[0037] In summary, the present invention discloses a valve diaphragm design that prevents detachment. The valve is composed of a valve seat 1, a diaphragm assembly 2 and a specific configuration. A first cavity is provided inside the valve seat 1, and a liquid inlet and a liquid outlet 3 are provided, which are arranged in different directions respectively. The diaphragm assembly 2 is placed in the cavity and is composed of a rod member 21, a sleeve member 22 and a membrane member 23. The rod member 21 can move along its axis and includes a first rod 211 and a protrusion portion 212. The diameter of the protrusion portion is larger than the first through hole of the sleeve member 22 to ensure a stable connection. The outer surface of the sleeve member 22 has a connecting portion corresponding to the connecting groove of the membrane member 23. The membrane member 23 is made of an elastic material (such as rubber) and can closely fit with adjacent components to form a closed fluid channel, adapt to the change of fluid pressure, and maintain the sealing performance. When the fluid pressure changes, the membrane body can deform slightly to fit or return to its original state to maintain the seal. The movement of the rod member 21 can control the position of the membrane body to realize the switching between sealing and opening. This movement can be adjusted by a threaded assembly. When the membrane member 23 is connected through the sleeve member 22, the protrusion portion 212 contacts the bottom of the connecting groove, and the connecting portion of the sleeve member is embedded in the connecting groove, preventing the membrane member 23 from detaching from the end face of the rod member 21 and ensuring the stability and reliability of the valve.

[0038] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the concept of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent.

Claims

1. A valve diaphragm for preventing detachment, the valve comprising a valve seat provided with a first cavity, the valve seat being provided with a liquid inlet arranged in a first direction and a liquid outlet arranged in a second direction, characterized in that, Inside the first cavity, a diaphragm assembly is arranged, and the diaphragm assembly includes: A rod member configured to move along the axis direction of the rod member. The rod member includes a first rod and a convex portion arranged at one end of the first rod. A sleeve member including a first through hole. The first rod passes through the first through hole. A connecting portion is arranged on the outer surface of the sleeve member, and the diameter of the convex portion is larger than the diameter of the first through hole. A membrane member including a membrane body and a connecting member arranged on the membrane body. The connecting member is provided with a connecting groove corresponding to the connecting portion. Wherein, when the rod member is connected to the membrane member through the sleeve member, the convex portion contacts the bottom of the connecting groove, and the connecting portion of the sleeve member is embedded in the connecting groove.

2. The anti-detachment valve diaphragm according to claim 1, wherein A first thread is arranged on the surface of the connecting portion, and a second thread is arranged on the inner wall of the connecting groove to be paired with the first thread.

3. The anti-detachment valve diaphragm according to claim 2, characterized in that The convex portion is arranged in a cylindrical shape and is provided with a first plane and a second plane. Wherein, when the rod member is connected to the membrane member through the sleeve member, the second plane contacts the connecting groove, and the first plane contacts the sleeve member.

4. The anti-detachment valve diaphragm according to claim 3, characterized in that The material of the convex portion is magnetic. An adsorbent made of ferromagnetic material is embedded on the surface of the sleeve member close to the convex portion. Wherein, when the rod member is connected to the membrane member through the sleeve member, the convex portion acts on the adsorbent.

5. A valve diaphragm for preventing detachment according to claim 3, characterized in that A disassembly portion is fixedly arranged at one end of the connecting portion, and the top view of the disassembly portion is arranged in a regular hexagon.

6. The anti-detachment valve diaphragm according to claim 4, wherein, A limiting notch is arranged at the bottom of the second plane, and a limiting protrusion is arranged at the bottom of the connecting groove. Wherein, when the rod member is connected to the membrane member through the sleeve member, the limiting protrusion is embedded in the limiting notch.

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