Expansion tank with stably fixed diaphragm

Abstract

The utility model relates to the technical field of expansion tanks with stably fixed diaphragms, in particular to an expansion tank with stably fixed diaphragms, which comprises a tank body and a diaphragm, the tank body is provided with a concave fixing ring, the expansion tank further comprises a support ring, an arc-shaped fixing groove is formed on the outer surface of the support ring, and the diaphragm is arranged in the arc-shaped fixing groove. The edge of the diaphragm is clamped and fixed in the fixing grooves of the fixing ring and the supporting ring; the supporting ring comprises a supporting ring body and sealing ring bodies formed on the upper side and the lower side of the supporting ring body, sealing grooves are formed in the outer surfaces of the sealing ring bodies, the expansion tank further comprises sealing rings, and the sealing rings are arranged on the inner side and the outer side of the diaphragm at the positions of the sealing grooves respectively. The elastic modulus of the sealing ring is smaller than that of the diaphragm, and the supporting ring is provided with reinforcing ribs at the position of the supporting ring body. According to the utility model, the fixing effect and the sealing effect of the diaphragm can be improved, and the existing problems are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expansion tank, especially a kind of expansion tank with stable diaphragm fixing. BACKGROUND

[0002] Expansion tank is commonly used for fluid pressure pipeline to stabilize pressure, and is widely used in water pipeline transportation, air conditioning medium transportation and other scenes. Expansion tank is divided into diaphragm type expansion tank and air bag type expansion tank. The diaphragm type expansion tank is fixed with a diaphragm in the tank body. By introducing pressure gas on one side of the diaphragm, the liquid pressure fluctuation on the other side of the diaphragm is balanced.

[0003] At present, for the diaphragm of the diaphragm type expansion tank, the common form is disclosed in the connection structure of the diaphragm of the expansion tank with the application number 201220523797.X. The diaphragm is fixed by the interference extrusion of the convex ring and the fixing ring of the pipe body. In the existing fixing mode, in order to improve the fixing effect stability of the fixing ring to the diaphragm, a fixing ring with high structural strength and a diaphragm are usually used. When the diaphragm and the tank body are used, aging and deformation occur. The fixing ring is prone to air leakage and liquid leakage at the diaphragm position. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides an expansion tank with stable diaphragm fixing, which can improve the fixing effect and sealing effect of the diaphragm, and effectively solve the existing problems.

[0005] In order to solve the above problems, the utility model provides an expansion tank with stable diaphragm fixing, which includes a tank body and a diaphragm. The tank body is provided with an inner concave fixing ring. The expansion tank further includes a support ring. The outer surface of the support ring forms an arc-shaped fixing groove. The edge of the diaphragm is clamped and fixed in the fixing ring and the fixing groove of the support ring. The support ring includes a support ring body and a sealing ring body formed on the upper and lower sides of the support ring body. The outer surface of the sealing ring body forms a sealing groove. The expansion tank further includes a sealing ring. The diaphragm is provided with a sealing ring on the inner and outer sides of the sealing groove position. The elastic modulus of the sealing ring is less than that of the diaphragm. The support ring is provided with a reinforcing rib at the position of the support ring body.

[0006] Further, the reinforcing rib includes two support plate bodies arranged vertically and spaced apart, and a connecting plate body connected between the two support plate bodies. The support plate bodies are respectively connected with the upper and lower sides of the center line of the support ring body.

[0007] Further, the cross section of the connecting plate body is arc-shaped, and the support plate body extends inwardly in the direction away from the connecting plate body.

[0008] Further, the support plate body is welded with the support ring body.

[0009] Further, the outer edge of the sealing ring body is outwardly folded to form an arc-shaped flange.

[0010] Further, the sealing rings on the inner and outer sides of the diaphragm are staggered.

[0011] Further, the support ring body is integrally formed with the sealing ring body.

[0012] Further, the reinforcing rib further comprises a shaping ring body attached to the outer side surface of the support ring body.

[0013] Further, the diaphragm is provided with a thickness-increased area at the position of the fixing groove.

[0014] Further, the reinforcing rib comprises a reinforcing ring attached to the outer surface of the support ring body.

[0015] The diaphragm has the advantages that the fixing effect and the sealing effect of the diaphragm are improved, and the existing problems are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 2 The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings: Figure 1 The drawings described herein are used to provide a further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0019] 1, tank body; 2, support ring; 201, support ring body; 202, sealing ring body; 3, fixing ring; 4, sealing groove; 5, fixing groove; 6, sealing ring; 7, support plate body; 8, connecting plate body; 9, arc-shaped flange; 10, shaping ring body; 11, thickness-increased area. DETAILED DESCRIPTION

[0020] In order to more clearly explain the overall concept of the present application, the following will be described in detail in an exemplary manner in combination with the drawings.

[0021] It should be noted that in the following description, many specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0022] In addition, in the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. However, it is noted that direct connection means that the connection between the two main bodies does not form a connection relationship through an excessive structure, but is connected to form a whole only through the connection structure. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] In the present application, as shown in Figures 1 to 2 A diaphragm fixing and stabilizing expansion tank is provided, which comprises a tank body and a diaphragm, the tank body is provided with an inner concave fixing ring, the expansion tank further comprises a supporting ring, the outer surface of the supporting ring forms an arc-shaped fixing groove, the edge of the diaphragm is clamped and fixed in the fixing ring and the fixing groove of the supporting ring; the supporting ring comprises a supporting ring body and a sealing ring body formed on the upper and lower sides of the supporting ring body, the outer surface of the sealing ring body forms a sealing groove, the expansion tank further comprises a sealing ring, the diaphragm is provided with a sealing ring on the inner and outer sides of the sealing groove position, the elastic modulus of the sealing ring is less than the elastic modulus of the diaphragm, and the supporting ring is provided with a reinforcing rib at the position of the supporting ring body.

[0026] The expansion tank of the utility model has the advantages that the supporting ring body further increases the stability of the shape through the reinforcing ribs, thereby improving the fixing effect of the diaphragm at the fixed groove position and preventing the diaphragm from being fixed invalidly in the tank body.

[0027] Furthermore, the utility model discloses a reinforcing rib is arranged to keep the fixing effect of the supporting ring on the diaphragm, so that the strength of the supporting ring at the sealing ring body position can be reduced, the sealing ring body position has better elastic deformation capacity, and the sealing ring at the sealing ring body position can be better clamped and sealed when the tank body or the supporting ring is deformed at the fixed groove position.

[0028] In the illustrated embodiment, for the structure of the utility model, further specifically, the reinforcing rib comprises two supporting plate bodies arranged at intervals along the vertical direction, and a connecting plate body connected between the two supporting plate bodies, and the supporting plate bodies are respectively connected with the parts on the upper and lower sides of the center line of the supporting ring body.

[0029] In the illustrated embodiment, for the structure of the utility model, further specifically, the cross section of the connecting plate body is arc-shaped, and the supporting plate bodies extend inwardly in a slanting manner away from the connecting plate body.

[0030] In the illustrated embodiment, for the structure of the utility model, further specifically, the supporting plate bodies are connected with the supporting ring body by welding.

[0031] In the illustrated embodiment, for the structure of the utility model, further optimization is that the outer edge of the sealing ring body is outwardly folded to form an arc-shaped hem. As shown in the figure, the outer edge of the sealing ring body is arranged as an arc-shaped hem, so that the sealing ring body edge can prevent the diaphragm from being damaged.

[0032] In the illustrated embodiment, for the structure of the utility model, further specifically, the sealing rings on the inner and outer sides of the diaphragm are arranged alternately. As shown in the figure, the arrangement space of the sealing ring at the single side position can be increased, so that the sealing ring position has greater elastic stretchability, and the sealing effect of the sealing ring is further improved.

[0033] In the illustrated embodiment, for the structure of the utility model, further specifically, the supporting ring body is integrally connected with the sealing ring body.

[0034] In the illustrated embodiment, for the structure of the utility model, further specifically, the supporting ring body is integrally connected with the sealing ring body.

[0035] Alternatively, in an optional embodiment, the sealing ring body and the supporting ring body can be separately formed and then welded together.

[0036] In the illustrated embodiment, for the structure of the utility model, further specifically, the reinforcing rib further comprises a shaping ring body attached to the outer side surface of the supporting ring body. As shown in the figure, by arranging the shaping ring body, the stability of fixing the shape of the supporting ring body can be further improved, and when the supporting ring body and the sealing ring body are integrally formed, the supporting ring body and the sealing ring body as a whole adopt a metal ring with relatively large elasticity, so that the sealing ring body can further adapt to the micro-deformation of the tank body.

[0037] In the illustrated embodiment, for the structure of the utility model, further optimization is that the diaphragm is provided with a thickness-increased area at the position of the fixing groove. As shown in the figure, by arranging the thickness-increased area, the stability of fixing the diaphragm in the fixing groove after the diaphragm is locally thickened can be increased, so as to further prevent the diaphragm from falling off.

[0038] In the preferred embodiment, for the structure of the reinforcing rib in the utility model, further specifically, the reinforcing rib comprises a reinforcing ring attached to the outer surface of the supporting ring body.

[0039] It should be noted that the improvement of the utility model lies in the fixing structure of the diaphragm, and other structural settings of the expansion tank are not limited, and in the optional embodiment, the utility model can flexibly select the existing setting mode for other structures.

[0040] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts of each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0041] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A diaphragm-fixed and stabilized expansion tank, comprising a tank body and a diaphragm, characterized in that, The tank body is provided with a concave fixing ring, and the expansion tank also includes a support ring. The outer surface of the support ring forms an arc-shaped fixing groove, and the edge of the diaphragm is clamped and fixed in the fixing groove of the fixing ring and the support ring. The support ring includes a support ring body and sealing ring bodies formed on the upper and lower sides of the support ring body. A sealing groove is formed on the outer surface of the sealing ring body. The expansion tank also includes a sealing ring. The diaphragm is provided with sealing rings on the inner and outer sides of the sealing groove. The elastic modulus of the sealing ring is less than that of the diaphragm. The support ring is provided with reinforcing ribs at the support ring body position. The reinforcing rib includes two support plates arranged vertically at intervals and a connecting plate connecting the two support plates. The support plates are respectively connected to the upper and lower parts of the center line of the support ring. The cross-section of the connecting plate is arc-shaped, the supporting plate extends obliquely inward in a direction away from the connecting plate, and the diaphragm has a thickness-increasing area at the fixed groove position.

2. The expansion tank with a fixed and stable diaphragm according to claim 1, characterized in that, The support plate is welded to the support ring.

3. The expansion tank with a fixed and stable diaphragm according to claim 1, characterized in that, The outer edge of the sealing ring is folded outward to form an arc-shaped rolled edge.

4. The expansion tank with a fixed and stable diaphragm according to claim 1, characterized in that, The sealing rings on the inner and outer sides of the diaphragm are arranged alternately.

5. The expansion tank with a fixed and stable diaphragm according to claim 1, characterized in that, The support ring and the sealing ring are integrally formed and connected.

6. The expansion tank with a fixed and stable diaphragm according to claim 1, characterized in that, The reinforcing rib also includes a shaping ring that is attached to the outer surface of the supporting ring.

7. The expansion tank with a fixed and stable diaphragm according to claim 1, characterized in that, The reinforcing rib includes a reinforcing ring that is attached to the outer surface of the support ring.

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