Butterfly valve structure

Abstract

The utility model discloses a butterfly valve structure, which comprises a valve mechanism, a valve rod and a valve rod, a valve element mechanism is arranged in the middle of the valve rod, a sealing mechanism is arranged on one side of the outer wall of the valve element mechanism and comprises a sealing sleeve assembly, and the sealing sleeve assembly is clamped to one side of the valve element mechanism; the multiple screws are connected with one side of the valve element mechanism in a thread penetrating and inserting mode through the sealing sleeve assembly in an annular array; the first deformation cavity and the second deformation cavity are both arranged on the sealing sleeve assembly; and the wear-resistant layer is arranged outside the sealing sleeve assembly. Through the arrangement mode that the valve element mechanism is matched with the sealing mechanism, the sealing sleeve assembly can be stably arranged on the valve element mechanism in a sleeving mode, the sealing sleeve assembly can not be disengaged or curled due to friction, the phenomenon that the sealing mechanism deforms and leaks due to thermal expansion and cold contraction is reduced, and the connection tightness between the butterfly plate and the valve body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve structure. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve structure in which the closing part is a disc, which rotates around the butterfly shaft to achieve opening and closing. The closing part is a butterfly flap or butterfly plate. The butterfly valve mainly plays a cutting and throttling role in the pipeline.

[0003] Application No. 201921997975.0 discloses a butterfly valve sealing structure, wherein a sealing sleeve is provided on the inner wall of the valve body channel, and an elastic buffer sleeve is provided on the outer surface of the sealing sleeve; the outer surface of the sealing sleeve matches the inner wall of the valve body channel, and the inner surface of the sealing sleeve matches the valve core to close the valve body channel. The above-mentioned butterfly valve can achieve sealing between the valve body and the valve core, but the structure between the valve body and the valve core is simple, and the disassembly and assembly of the sealing sleeve on the valve core is too simple. Under water pressure, when the valve core rotates, the sealing sleeve is directly sleeved on the valve core. Although the sealing sleeve is inserted and positioned by a rotating shaft, there is no clamping structure on the side of the sealing sleeve, resulting in insufficient stability of the side of the sealing sleeve, which is easy to cause the side friction curling of the sealing sleeve during rotation. The connection tightness between the sealing sleeve and the valve core butterfly plate is insufficient, resulting in water leakage between the valve core butterfly plate and the valve body. Utility Model Content

[0004] The purpose of the utility model is to provide a butterfly valve structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a butterfly valve structure, comprising: a valve mechanism, a valve stem is rotatably interlaced in the middle of the valve mechanism;

[0006] A valve core mechanism is disposed in the middle of the valve stem, and a sealing mechanism is disposed on one side of the outer wall of the valve core mechanism, wherein the sealing mechanism comprises:

[0007] A sealing sleeve assembly, wherein the sealing sleeve assembly is clamped on one side of the valve core mechanism;

[0008] A plurality of screws, wherein the plurality of screws are arranged in an annular array and are connected to one side of the valve core mechanism through a sealing sleeve assembly and a threaded insertion.

[0009] A first deformation cavity and a second deformation cavity, wherein the first deformation cavity and the second deformation cavity are both arranged on the sealing sleeve assembly;

[0010] The wear-resistant layer is arranged outside the sealing sleeve assembly.

[0011] Preferably, the valve core mechanism comprises:

[0012] A butterfly plate assembly, wherein the sealing sleeve assembly is sleeved on one side of the butterfly plate assembly;

[0013] A plurality of mounting holes are provided on the other side of the butterfly plate assembly, and a plurality of reinforcing ribs are fixedly connected to the outer wall of the butterfly plate assembly.

[0014] Preferably, the butterfly plate assembly comprises:

[0015] A plate body, wherein the plate body is a circular plate structure;

[0016] A butterfly plate convex portion, wherein the butterfly plate convex portion is integrally formed and fixed to one side of the plate body;

[0017] The bevel edge is annularly formed and opened on the outer peripheral wall of the plate body.

[0018] Preferably, the sealing sleeve assembly comprises:

[0019] A sleeve body, wherein the sleeve body is sleeved on one side of the plate body;

[0020] A rubber convex portion, wherein the rubber convex portion is fixed to the middle portion of the sleeve body in an integrally formed structure, and the rubber convex portion is sleeved on the outside of the butterfly plate convex portion;

[0021] An inner hook portion, the inner hook portion is annularly formed and fixed to the outside of the sleeve, and the inner hook portion is clamped to the outer wall of the plate body;

[0022] A plurality of fixing ribs are arranged in a ring array and fixedly embedded in the inner sides of adjacent inner hooks, sleeves and rubber protrusions.

[0023] Preferably, the screw is slidably and interlacedly connected with one side of the rubber convex portion, and the first deformation cavity and the second deformation cavity are respectively opened on the outside of the rubber convex portion and the sleeve body.

[0024] Preferably, the inner cavities of the first deformation cavity and the second deformation cavity are both filled with gas, and the wear-resistant layer is coated on the outer walls of the inner hook, the sleeve body and the rubber protrusion.

[0025] Preferably, the valve mechanism comprises:

[0026] The valve body, the valve core mechanism rotates in the middle of the inner cavity of the valve body;

[0027] A rotating hole, wherein the rotating hole is provided in the middle of the valve body in the vertical direction, and both ends of the valve stem are rotatably connected to the inner cavity of the rotating hole through a sealing member;

[0028] A butterfly hole, wherein the butterfly hole is opened in the middle of the valve body;

[0029] A sealing hole is provided on one side of the middle part of the butterfly hole, and the butterfly plate assembly is rotatably connected with the sealing hole and the inner cavity of the butterfly hole.

[0030] Technical effects and advantages of the utility model:

[0031] The utility model adopts a setting mode in which the valve core mechanism and the sealing mechanism are matched, and utilizes screws to facilitate the position reinforcement of the sealing sleeve assembly, and enables the sealing sleeve assembly to be stably sleeved on the valve core mechanism, so that the sealing sleeve assembly will not be separated or curled due to friction. Through the setting of the first deformation cavity and the second deformation cavity, the deformation and leakage of the sealing mechanism caused by thermal expansion and contraction is reduced, and the connection tightness between the butterfly plate and the valve body is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall front sectional structure of the utility model.

[0033] Figure 2 It is a schematic diagram of the side sectional structure of the valve body of the utility model.

[0034] Figure 3 It is a schematic diagram of the cross-sectional structure of the valve body of the utility model in top view.

[0035] Figure 4 It is a side sectional structural diagram of the butterfly plate of the utility model.

[0036] Figure 5 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0037] In the figure: 1. valve mechanism; 11. valve body; 12. rotating hole; 13. butterfly hole; 14. sealing hole; 2. valve stem; 3. valve core mechanism; 31. butterfly plate assembly; 311. plate body; 312. butterfly plate protrusion; 313. bevel edge; 32. mounting hole; 4. sealing mechanism; 41. sealing sleeve assembly; 411. sleeve body; 412. rubber protrusion; 413. inner hook; 414. fixing rib; 42. screw; 43. first deformation cavity; 44. second deformation cavity; 45. wear-resistant layer; 5. reinforcing rib. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] The utility model provides Figure 1-5 A butterfly valve structure shown includes:

[0040] The valve mechanism 1 comprises: a valve body 11, a rotating hole 12, a butterfly hole 13 and a sealing hole 14. The rotating hole 12 is opened in the middle of the valve body 11 in the vertical direction, the butterfly hole 13 is opened in the middle of the valve body 11, and the sealing hole 14 is opened on one side of the middle of the butterfly hole 13. The sealing hole 14 is used to seal the inner cavity of the butterfly hole 13. The middle of the valve mechanism 1 is rotatably connected with a valve stem 2, and both ends of the valve stem 2 are rotatably connected with the inner cavity of the rotating hole 12 through a sealing member;

[0041] Furthermore, a valve core mechanism 3 is provided in the middle of the valve stem 2, and the valve core mechanism 3 rotates in the middle of the inner cavity of the valve body 11. The valve core mechanism 3 includes: a butterfly plate assembly 31 and a plurality of mounting holes 32. The butterfly plate assembly 31 is rotatably connected with the inner cavities of the sealing hole 14 and the butterfly hole 13. One side of the butterfly plate assembly 31 rotates relative to the inner cavity of the sealing hole 14. The plurality of mounting holes 32 are provided on the other side of the butterfly plate assembly 31. The valve stem 2 is threadedly connected with the inner cavities of the plurality of mounting holes 32 through a plurality of bolts, so that the valve stem 2 can be stably installed on the other side of the butterfly plate assembly 31, so that the valve stem 2 can rotate, and the butterfly plate assembly 31 can be driven to rotate, so as to cut off and throttle the inner cavity of the butterfly hole 13 in the inner cavity of the valve body 11.

[0042] Specifically, the butterfly plate assembly 31 includes: a plate body 311, a butterfly plate protrusion 312 and a bevel edge 313. The plate body 311 is a circular plate structure. The plate body 311 is rotatably connected to the inner cavity of the butterfly hole 13. The butterfly plate protrusion 312 is integrally formed and fixed to one side of the plate body 311. The butterfly plate protrusion 312 is rotatably connected to the inner cavity of the sealing hole 14. The bevel edge 313 is annularly opened on the outer peripheral wall of the plate body 311. Through the bevel edge 313, the outer corner of the plate body 311 close to the valve stem 2 is a bevel chamfer structure.

[0043] Further, a sealing mechanism 4 is provided on one side of the outer wall of the valve core mechanism 3, and the sealing mechanism 4 includes: a sealing sleeve assembly 41, a plurality of screws 42, a first deformation cavity 43, a second deformation cavity 44 and a wear-resistant layer 45. The sealing sleeve assembly 41 is clamped on one side of the valve core mechanism 3, and the sealing sleeve assembly 41 is sleeved on one side of the butterfly plate assembly 31. The sealing sleeve assembly 41 can improve the sealing between the butterfly plate assembly 31 and the inner walls of the butterfly hole 13 and the sealing hole 14. The plurality of screws 42 are in an annular array and are threadedly connected through the sealing sleeve assembly 41 and one side of the valve core mechanism 3, so that the screws 42 can fix the sealing sleeve assembly 41 on one side of the plate body 311. The first deformation cavity 43 and the second deformation cavity 44 are both provided on the sealing sleeve assembly 41. The wear-resistant layer 45 is provided on the outside of the sealing sleeve assembly 41. The wear-resistant layer 45 is a thin layer structure coated with anti-corrosion and wear-resistant paint, which is convenient for increasing the wear resistance of the friction between the sealing sleeve assembly 41 and the butterfly hole 13 and the sealing hole 14.

[0044] Specifically, the sealing sleeve assembly 41 includes: a sleeve body 411, a rubber protrusion 412, an inner hook portion 413 and a plurality of fixing ribs 414. The sleeve body 411 is sleeved on one side of the plate body 311. The sleeve body 411 is made of rubber. The rubber protrusion 412 is an integrally formed structure fixed to the middle part of the sleeve body 411. The rubber protrusion 412 is sleeved on the outside of the butterfly plate protrusion 312, so that the middle structure of the sleeve body 411 can fit with the outside of the butterfly plate protrusion 312 through the rubber protrusion 412. The inner hook portion 413 is an annular integrally formed structure fixed to the outside of the sleeve body 411. The inner hook portion 413 is clamped on the outer wall of the plate body 311, and the inner hook portion 413 fits with the outer wall of the bevel edge 313, thereby improving the stability of the position of the sealing sleeve assembly 41, so that the sealing sleeve composed of the inner hook portion 413, the sleeve body 411 and the rubber protrusion 412 can fit the plate The outer part and one side of the body 311 are stably fitted to improve the sealing performance of the butterfly valve, so that the sealing sleeve composed of the inner hook part 413, the sleeve body 411 and the rubber protrusion 412 can be fitted and rotated on the inner wall of the butterfly hole 13 and the sealing hole 14, which is convenient for improving the sealing performance between the butterfly plate assembly 31 and the butterfly hole 13 and the sealing hole 14. A plurality of fixing ribs 414 are arranged in an annular array, and the fixing ribs 414 are fixedly embedded in the inner sides of adjacent inner hooks 413, the sleeve body 411 and the rubber protrusion 412. Through the fixing ribs 414, it is convenient to further improve the stability of the position of the inner hook part 413, the sleeve body 411 and the rubber protrusion 412 on the plate body 311, so that the sealing sleeve structure composed of the inner hook part 413, the sleeve body 411 and the rubber protrusion 412 will not curl or even detach on the outside of the plate body 311 due to friction;

[0045] Specifically, the screw 42 is slidably connected with one side of the rubber protrusion 412 to improve the stability of the sealing sleeve structure composed of the inner hook 413, the sleeve 411 and the rubber protrusion 412 on the plate 311. The first deformation cavity 43 and the second deformation cavity 44 are respectively opened on the outside of the rubber protrusion 412 and the sleeve 411. The inner cavities of the first deformation cavity 43 and the second deformation cavity 44 are filled with gas, so that when the sealing sleeve expands and contracts with heat and cold, the sealing sleeve structure composed of the inner hook 413, the sleeve 411 and the rubber protrusion 412 There is enough space for cooperative deformation, so that the sealing sleeve structure can stably rotate and seal in the inner cavity of the valve body 11, and the wear-resistant layer 45 is coated on the outer walls of the inner hook 413, the sleeve 411 and the rubber protrusion 412, so as to improve the wear resistance of the outer walls of the inner hook 413, the sleeve 411 and the rubber protrusion 412. The outer wall of the butterfly plate assembly 31 is fixedly connected with multiple reinforcing ribs 5, and the reinforcing ribs 5 are fixed to the other side of the plate body 311, so as to improve the stability of the opening position of the mounting hole 32 and make the structure of the butterfly valve firm.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A butterfly valve structure, comprising: A valve mechanism (1), wherein a valve stem (2) is rotatably interlaced and connected to a middle portion of the valve mechanism (1); The invention is characterized in that: a valve core mechanism (3) is arranged in the middle of the valve stem (2), a sealing mechanism (4) is arranged on one side of the outer wall of the valve core mechanism (3), and the sealing mechanism (4) comprises: A sealing sleeve assembly (41), wherein the sealing sleeve assembly (41) is clamped on one side of the valve core mechanism (3); A plurality of screws (42), wherein the plurality of screws (42) are arranged in an annular array and are threadably connected to one side of the valve core mechanism (3) through a sealing sleeve assembly (41); A first deformation cavity (43) and a second deformation cavity (44), wherein the first deformation cavity (43) and the second deformation cavity (44) are both arranged on the sealing sleeve assembly (41); A wear-resistant layer (45), wherein the wear-resistant layer (45) is arranged outside the sealing sleeve assembly (41).

2. A butterfly valve structure according to claim 1, characterized in that: The valve core mechanism (3) comprises: A butterfly plate assembly (31), wherein the sealing sleeve assembly (41) is sleeved on one side of the butterfly plate assembly (31); A plurality of mounting holes (32) are provided on the other side of the butterfly plate assembly (31); and a plurality of reinforcing ribs (5) are fixedly connected to the outer wall of the butterfly plate assembly (31).

3. A butterfly valve structure according to claim 2, characterized in that: The butterfly plate assembly (31) comprises: A plate body (311), wherein the plate body (311) is a circular plate structure; A butterfly plate protrusion (312), wherein the butterfly plate protrusion (312) is integrally formed and fixed to one side of the plate body (311); A beveled edge (313), wherein the beveled edge (313) is annularly formed and opened on the outer peripheral wall of the plate body (311).

4. A butterfly valve structure according to claim 3, characterized in that: The sealing sleeve assembly (41) comprises: A sleeve body (411), wherein the sleeve body (411) is sleeved on one side of the plate body (311); A rubber convex portion (412), the rubber convex portion (412) being fixed to the middle portion of the sleeve body (411) in an integrally formed structure, and the rubber convex portion (412) being sleeved on the outside of the butterfly plate convex portion (312); An inner hook portion (413), the inner hook portion (413) is annularly integrally formed and fixed to the outside of the sleeve (411), and the inner hook portion (413) is clamped to the outer wall of the plate body (311); A plurality of fixing ribs (414) are arranged in a ring array, and the fixing ribs (414) are fixedly embedded in the inner sides of adjacent inner hooks (413), the sleeve (411) and the rubber protrusions (412).

5. A butterfly valve structure according to claim 3, characterized in that: The screw (42) is slidably connected with one side of the rubber convex part (412), and the first deformation cavity (43) and the second deformation cavity (44) are respectively opened on the outside of the rubber convex part (412) and the sleeve body (411).

6. A butterfly valve structure according to claim 3, characterized in that: The inner cavities of the first deformation cavity (43) and the second deformation cavity (44) are both filled with gas, and the wear-resistant layer (45) is coated on the outer walls of the inner hook portion (413), the sleeve body (411) and the rubber protrusion (412).

7. A butterfly valve structure according to claim 2, characterized in that: The valve mechanism (1) comprises: A valve body (11), wherein the valve core mechanism (3) rotates in the middle of the inner cavity of the valve body (11); A rotating hole (12), wherein the rotating hole (12) is provided in the middle of the valve body (11) in the vertical direction, and both ends of the valve stem (2) are rotatably connected to the inner cavity of the rotating hole (12) through a sealing member; A butterfly hole (13), wherein the butterfly hole (13) is opened in the middle of the valve body (11); A sealing hole (14) is provided on one side of the middle portion of the butterfly hole (13); the butterfly plate assembly (31) is rotatably connected to the sealing hole (14) and the inner cavity of the butterfly hole (13).

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