A new elastic diaphragm structure

Abstract

The utility model relates to a novel elastic diaphragm structure, including a diaphragm body, the diaphragm body including a first layer, a second layer and a reinforcement layer arranged between the first layer and the second layer, a reinforcement ring is arranged between the periphery of the first layer and the periphery of the second layer, the diaphragm body forms a first sealing surface on one side of the axial direction corresponding to the reinforcement ring, the diaphragm body forms a second sealing surface on the other side of the axial direction corresponding to the reinforcement ring, and the diaphragm body forms a third sealing surface between the first sealing surface and the second sealing surface. After adopting the technical solution of the utility model, by arranging a reinforcement ring on the periphery of the diaphragm body, the periphery of the diaphragm body is strengthened, so that its structure is more reliable, and by arranging the first sealing surface, the second sealing surface and the third sealing surface, the clamping area is guaranteed, the sealing effect is enhanced, and the radial size of the diaphragm body can be reduced and the occupied space can be reduced.

Description

Technical Field

[0001] The utility model relates to a novel elastic diaphragm structure. Background Art

[0002] The diaphragm, for example, can be used in a control valve to play an isolating role. For example, in CN 205908865 U, a Chinese utility model entitled “Hydraulic automatic control valve”, a hydraulic automatic control valve is disclosed, wherein the partition structure is a diaphragm, and the upper and lower surfaces of the diaphragm are respectively provided with a first core plate and a second core plate, and the first core plate and the second core plate are fixed to the valve stem. The specific structure of the diaphragm is also disclosed in the prior art. For example, in CN 201776951 U, a Chinese utility model entitled “A rubber diaphragm with cord fabric added”, a rubber diaphragm with cord fabric added is disclosed, including a rubber diaphragm and cord fabric, wherein the rubber diaphragm has two layers, and the cord fabric is bonded and vulcanized between the lower rubber diaphragm and the upper rubber diaphragm.

[0003] Reference Figure 1 The existing diaphragms of this type generally include a first layer 11 (i.e., an upper rubber layer), a second layer 12 (i.e., an upper rubber layer), and a reinforcing layer 20 disposed between the upper rubber layer and the lower rubber layer. The reinforcing layer 20 may be made of cord fabric. Applied to the control valve, the diaphragm is disposed between the first clamping plate 51 and the second clamping plate 52. The valve stem 30 passes through the center of the first clamping plate 51 and the center of the second clamping plate 52 and is fixed on the first clamping plate 51 and the second clamping plate 52. The periphery of the diaphragm is locked on the mounting carrier by bolts 43 or screws. The mounting carrier here may be, for example, a first carrier member 41 (such as a valve body) and a second carrier member 42 (such as a valve cover). In order to prevent the diaphragm from detaching, there must be a sufficient clamping area, that is, there must be a sufficient length a from the outer periphery of the diaphragm to the center of the diaphragm for the valve body and the valve cover to clamp. This will cause the overall outer edge of the diaphragm to be larger in size and occupy a larger space.

[0004] Based on the above issues, the applicant conducted research on the above issues and resulted in this case. Utility Model Content

[0005] The utility model aims to provide a novel elastic diaphragm structure which has a firm structure, good sealing performance and can reduce the outer edge size.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A novel elastic diaphragm structure includes a diaphragm body, the diaphragm body includes a first layer, a second layer and a reinforcement layer arranged between the first layer and the second layer, a reinforcement ring is arranged between the periphery of the first layer and the periphery of the second layer, the diaphragm body forms a first sealing surface on one side of the axial direction corresponding to the reinforcement ring, the diaphragm body forms a second sealing surface on the other side of the axial direction corresponding to the reinforcement ring, and the diaphragm body forms a third sealing surface between the first sealing surface and the second sealing surface.

[0008] As a preferred embodiment of the present invention, the first sealing surface is arranged in parallel with the second sealing surface.

[0009] As a preferred embodiment of the present invention, the diameter of the third sealing surface gradually decreases from the first sealing surface to the second sealing surface.

[0010] As a preferred embodiment of the utility model, the reinforcement layer forms a first edging surface adhered to the reinforcement ring corresponding to the first sealing surface, the reinforcement layer forms a second edging surface adhered to the reinforcement ring corresponding to the second sealing surface, and the reinforcement layer forms a third edging surface adhered to the reinforcement ring corresponding to the third sealing surface.

[0011] As a preferred embodiment of the present invention, the reinforcement ring is a metal ring.

[0012] As a preferred embodiment of the present invention, both the first layer and the second layer are rubber layers.

[0013] As a preferred embodiment of the present invention, the periphery of the first layer and the periphery of the second layer are fixed together by pressurized vulcanization, and the reinforcing ring and the reinforcing layer are wrapped in the first layer and the second layer.

[0014] As a preferred embodiment of the present invention, the reinforcement layer is a cord fabric.

[0015] As a preferred embodiment of the utility model, it also includes a first pressure plate, a first pressure plate and a rod body, the diaphragm body is clamped between the first pressure plate and the second pressure plate, the rod body passes through the center of the diaphragm body, the center of the first pressure plate and the center of the second pressure plate and is fixed on the first pressure plate and the second pressure plate.

[0016] As a preferred embodiment of the utility model, it also includes a first carrier ring and a second carrier ring connected together by bolts or screws, a conical groove seat is provided at the center hole of the second carrier ring, the conical groove seat has a supporting plane and a conical surface connected to the supporting plane, the second sealing surface is arranged corresponding to the supporting plane, and the third sealing surface is arranged corresponding to the conical surface.

[0017] After adopting the technical solution of the utility model, by setting a reinforcing ring on the periphery of the diaphragm body, the periphery of the diaphragm body is strengthened, making its structure more reliable, and by arranging the first sealing surface, the second sealing surface, and the third sealing surface, the clamping area is guaranteed, the sealing effect is enhanced, and the radial size of the diaphragm body and the occupied space can be reduced. In addition, the second sealing surface and the third sealing surface of the utility model form a conical surface, forming a vertical seal and a plane seal, making it more convenient and quick to assemble the diaphragm body to other accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the diaphragm structure in the prior art.

[0019] Figure 2 It is a schematic diagram of the diaphragm structure in the utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] In the figure:

[0022] First floor 11 Second floor 12

[0023] First sealing surface 101 Second sealing surface 102

[0024] The third sealing surface 103

[0025] Reinforcement layer 20 First edge surface 201

[0026] Second edge-wrapped surface 202 Third edge-wrapped surface 203

[0027] Rod body 30 First carrier ring 41

[0028] Second carrier ring 42 Bolt 43

[0029] Support plane 44 Conical surface 45

[0030] First pressing plate 51 Second pressing plate 52

[0031] Reinforcement ring 60 DETAILED DESCRIPTION

[0032] In order to better understand the technical solution of the present utility model, it is described in more detail below in conjunction with embodiments.

[0033] Reference Figures 2 to 3 In order to facilitate the description of the utility model, Figure 2The state of the upper and lower positions is described, a new elastic diaphragm structure, including a diaphragm body, in the utility model, the diaphragm body can be a flat disk, or a bowl-shaped structure. The diaphragm body includes a first layer 11, a second layer 12, and a reinforcing layer 20 arranged between the first layer 11 and the second layer 12. A reinforcing ring 60 is arranged between the periphery of the first layer 11 and the periphery of the second layer 12. In the embodiment, the reinforcing ring 60 is a metal ring, which plays a role in increasing the rigidity of the periphery of the diaphragm body. Of course, the material of the reinforcing ring 60 is not limited to metal, and can also be used for diaphragms in the art. The diaphragm body forms a first sealing surface 101 on one side (i.e., the upper side) of the axial direction of the reinforcing ring 60, and the diaphragm body forms a second sealing surface 102 on the other side (i.e., the lower side) of the axial direction of the reinforcing ring 60. The diaphragm body forms a third sealing surface 103 between the first sealing surface 101 and the second sealing surface 102, and the third sealing surface 103 extends from the first sealing surface 101 to the second sealing surface 102.

[0034] As a preferred embodiment of the present invention, the first sealing surface 101 is arranged in parallel with the second sealing surface 102. As a preferred embodiment of the present invention, the diameter of the third sealing surface 103 gradually decreases from the first sealing surface 101 to the second sealing surface 102, that is, a conical surface structure is formed on the third sealing surface 103.

[0035] As a preferred embodiment of the present invention, the reinforcing layer 20 forms a first edging surface 201 adhered to the reinforcing ring 60 corresponding to the first sealing surface 101, the reinforcing layer 20 forms a second edging surface 202 adhered to the reinforcing ring 60 corresponding to the second sealing surface 102, and the reinforcing layer 20 forms a third edging surface 203 adhered to the reinforcing ring 60 corresponding to the third sealing surface 103. The first edging surface 201, the third edging surface 203 and the second edging surface 202 are connected in sequence, so as to wrap most of the surface of the reinforcing ring 60, and enhance the connection firmness of the reinforcing ring 60 on the diaphragm body. By setting the reinforcing ring 60, the first edging surface 201, the second edging surface 202 and the third edging surface 203, the thickness of the diaphragm structure at the position of the reinforcing ring 60 can be greater than the thickness at other positions of the diaphragm body, thereby increasing the sealing area of ​​the third sealing surface 103 and enhancing the sealing effect.

[0036] As a preferred embodiment of the present invention, both the first layer 11 and the second layer 12 are rubber layers. The periphery of the first layer 11 and the periphery of the second layer 12 are fixed together by pressurized vulcanization, and the reinforcing ring 60 and the reinforcing layer 20 are wrapped in the first layer 11 and the second layer 12. The pressurized vulcanization process is a prior art and will not be described in detail herein.

[0037] As a preferred embodiment of the present invention, the reinforcing layer 20 is a cord fabric. Of course, the present invention is not limited to the cord fabric, and other materials in the art may also be used.

[0038] As a preferred embodiment of the utility model, it also includes a first pressure plate 51, a first pressure plate 51 and a rod body 30. The first pressure plate 51 and the second pressure plate 52 are arranged in parallel. The diaphragm body is clamped between the first pressure plate 51 and the second pressure plate 52. The rod body 30 passes through the center of the diaphragm body, the center of the first pressure plate 51 and the center of the second pressure plate 52 and is fixed on the first pressure plate 51 and the second pressure plate 52.

[0039] As a preferred embodiment of the present invention, it further includes a first carrier ring 41 and a second carrier ring 42 connected together by bolts 43 or screws. The first carrier ring 41 can be, for example, a valve cover of a control valve, and the second carrier ring can be, for example, a valve body of a control valve. A conical groove seat is provided at the center hole of the second carrier ring 42. The conical groove seat has a support plane 44 and a conical surface 45 connected to the support plane 44. The support plane 44 is arranged perpendicular to the axis of the diaphragm body. The second sealing surface 102 is arranged corresponding to the support plane 44, and the third sealing surface 103 is arranged corresponding to the conical surface 45. The angle between the conical surface 45 and the second sealing surface 102 is an obtuse angle. When in use, the second sealing surface 102 is placed on the support plane 44, and the third sealing surface 103 is placed on the conical surface 45. The lower surface of the first carrier ring 41 is pressed against the first sealing surface 101, and the first carrier ring 41 and the second carrier ring 42 are locked by bolts 43.

[0040] In the above-mentioned embodiments, the diaphragm structure is used in a control valve. Of course, the diaphragm structure of the utility model can also be used in other products.

[0041] The protection scope of the present utility model is not limited to this embodiment, and any person making similar changes thereto shall be deemed to be within the protection scope of the present utility model.

Claims

1. A novel elastic diaphragm structure, comprising a diaphragm body, wherein the diaphragm body comprises a first layer, a second layer and a reinforcement layer arranged between the first layer and the second layer, characterized in that: A reinforcement ring is provided between the periphery of the first layer and the periphery of the second layer, the diaphragm body forms a first sealing surface on one axial side of the reinforcement ring, the diaphragm body forms a second sealing surface on the other axial side of the reinforcement ring, and the diaphragm body forms a third sealing surface between the first sealing surface and the second sealing surface.

2. A novel elastic diaphragm structure as claimed in claim 1, characterized in that: The first sealing surface is arranged in parallel with the second sealing surface.

3. A novel elastic diaphragm structure as claimed in claim 2, characterized in that: The diameter of the third sealing surface gradually decreases from the first sealing surface to the second sealing surface.

4. A novel elastic diaphragm structure as claimed in claim 1, characterized in that: The reinforcement layer forms a first edging surface adhered to the reinforcement ring corresponding to the first sealing surface, the reinforcement layer forms a second edging surface adhered to the reinforcement ring corresponding to the second sealing surface, and the reinforcement layer forms a third edging surface adhered to the reinforcement ring corresponding to the third sealing surface.

5. A novel elastic diaphragm structure according to any one of claims 1 to 4, characterized in that: The reinforcing ring is a metal ring.

6. A novel elastic diaphragm structure according to any one of claims 1 to 4, characterized in that: The first layer and the second layer are both rubber layers.

7. A novel elastic diaphragm structure as claimed in claim 6, characterized in that: The periphery of the first layer and the periphery of the second layer are fixed together by pressurized vulcanization, and the reinforcing ring and the reinforcing layer are wrapped in the first layer and the second layer.

8. A novel elastic diaphragm structure according to any one of claims 1 to 4, characterized in that: The reinforcing layer is a cord fabric.

9. A novel elastic diaphragm structure according to any one of claims 1 to 4, characterized in that: It also includes a first pressure plate, a second pressure plate and a rod body, the diaphragm body is clamped between the first pressure plate and the second pressure plate, the rod body passes through the center of the diaphragm body, the center of the first pressure plate and the center of the second pressure plate and is fixed on the first pressure plate and the second pressure plate.

10. A novel elastic diaphragm structure as claimed in claim 9, characterized in that: It also includes a first carrier ring and a second carrier ring connected together by bolts or screws, a conical groove seat is provided at the center hole of the second carrier ring, the conical groove seat has a supporting plane and a conical surface connected to the supporting plane, the second sealing surface is arranged corresponding to the supporting plane, and the third sealing surface is arranged corresponding to the conical surface.

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