Breathing valve

Abstract

The utility model discloses a breather valve which comprises a valve body and a flange installed at the bottom, a clamping hoop used for clamping is installed between the valve body and the flange, a supporting boss is arranged at the bottom of the valve body in an integrated connection mode, a fixing boss corresponding to the supporting boss is arranged on one side of the flange in an extending mode, and the fixing boss corresponds to the supporting boss. A sealing assembly is arranged between the supporting boss and the fixing boss in a clamped mode, the sealing assembly comprises a sealing ring, the side, facing the supporting boss, of the sealing ring protrudes in a cylindrical shape, and the side, facing the fixing boss, of the sealing ring is arranged in an inclined state. The sealing effect of the breather valve can be improved, and the use cost of enterprises is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a kind of breather valve. BACKGROUND

[0002] Breather valve is the safe energy-saving product of maintaining storage tank air pressure balance, reducing medium volatilization, breather valve makes full use of the pressure-bearing capacity of storage tank itself to reduce medium emission, its principle is to use the weight of positive and negative pressure valve disc to control the exhaust positive pressure and inhale negative pressure of storage tank, breather valve includes valve body and the connecting flange of bottom, and usually adopt the way of clamp clamping to be mutually fixed, since valve body and connecting flange are mostly plane, and when cooperating with clamp, the sealing ring clamping effect is poor due to the error gap existing in processing, and better sealing effect cannot be formed. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims at providing a kind of breather valve, which can improve the sealing effect of breather valve and save the use cost of enterprise.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of breather valve, including valve body and the flange installed at bottom, the valve body is installed with the clamp for clamping between flange, the valve body bottom is integrally connected with the support boss, the flange one side is extended with the fixed boss corresponding with support boss, the support boss and the fixed boss between clamping have sealing assembly, the sealing assembly includes sealing ring, the sealing ring side towards support boss is cylindrical shape and protrudes, the sealing ring side towards fixed boss is arranged in inclined state.

[0005] Preferably, the support boss is arranged in S shape.

[0006] Preferably, the support boss and the valve body are integrally formed by stamping.

[0007] Preferably, the fixed boss side towards sealing ring is provided with first sealing slope, the sealing ring is provided with second sealing slope matched with first sealing slope, and the first sealing slope side towards clamp is arranged in gradually reducing state.

[0008] Preferably, the sealing ring side towards clamp is extended with abutting portion, one end of the abutting portion is abutting on the end face of support boss, and the other end is abutting on fixed boss, and the fixed boss is protruded with annular convex part abutting with abutting portion.

[0009] Preferably, the sealing ring side away from abutting portion is extended with contact portion, one end of the contact portion is abutting on support boss, and the other end is abutting on one side of fixed boss.

[0010] The utility model discloses beneficial effect is: the valve body and the support boss adopt integral stamping forming process support, distinguish from the connecting mode of welding of prior art, can promote the firm degree of overall structure, and the S type shape setting of support convex part can form multistage sealing effect, and the fixed convex part adopts the setting of inclination state can be more big degree and fit in the clamping degree of the clamp, and the sealing effect of sealing ring is in the gradually tight state, realizes better sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the overall structure schematic diagram of the utility model;

[0012] Figure 2 It is the A part of the utility model enlarged view.

[0013] In the drawing, 1, valve body, 2, flange, 3, clamp, 4, support boss, 5, fixed boss, 8, sealing assembly, 9, sealing ring, 10, first sealing slope, 11, second sealing slope, 12, abutment, 13, contact part. DETAILED DESCRIPTION

[0014] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the range of protection of the utility model.

[0015] Embodiment: as shown in the drawings of the utility model Figure 1 And 2 A breathing valve, including valve body 1 and the flange 2 of installation at the bottom, install the clamp for clamping between valve body 1 and flange 2, the support boss 4 of integral type connection is provided at the bottom of valve body 1, the fixed boss 5 corresponding with support boss 4 is provided with the extension at one side of flange 2, the sealing assembly 8 is clamped between support boss 4 and fixed boss 5, the sealing assembly 8 includes sealing ring 9, the side of sealing ring 9 towards support boss 4 is cylindrical shape and protrudes, the side of sealing ring 9 towards fixed boss 5 is provided with inclination state, valve body 1 and support boss 4 adopt integral stamping forming process support, distinguish from the connecting mode of welding of prior art, can promote the firm degree of overall structure, and the S type shape setting of support convex part can form multistage sealing effect, and the fixed convex part adopts the setting of inclination state can be more big degree and fit in the clamping degree of the clamp, and the sealing effect of sealing ring 9 is in the gradually tight state, realizes better sealing effect.

[0016] As shown in the drawings of the utility model Figure 2As shown, the support boss 4 is arranged in an S-shaped form, and can form a multi-stage sealing effect with the sealing ring 9.

[0017] As shown in the accompanying drawings, the support boss 4 is integrally formed with the valve body 1 by stamping, thereby enhancing the overall strength and saving cost compared with a welded structure. Figure 2

[0018] As shown in the accompanying drawings, the fixing boss 5 is provided with a first sealing slope 10 on the side facing the sealing ring 9, and the sealing ring 9 is provided with a second sealing slope 11 matched with the first sealing slope 10, and the first sealing slope 10 is arranged in a gradually reduced state towards the side of the clamp, and the slope design can improve the overall sealing effect, and can gradually press the sealing ring 9 when the clamp is clamped. Figure 2

[0019] As shown in the accompanying drawings, the sealing ring 9 is provided with an abutting portion 12 extending towards the side of the clamp, one end of the abutting portion 12 is abutted against the end face of the support boss 4, and the other end is abutted against the fixing boss 5, and the fixing boss 5 is provided with an annular protruding portion abutting against the abutting portion 12, and the clamp can continuously clamp the abutting portion 12 when the clamp is clamped, thereby reducing the gap caused by the machining error. Figure 2

[0020] As shown in the accompanying drawings, the sealing ring 9 is provided with a contact portion 13 extending away from the abutting portion 12, one end of the contact portion 13 is abutted against the support boss 4, and the other end is abutted against one side of the fixing boss 5, and the inner sealing effect can be achieved when the clamp is clamped. Figure 2

[0021] In the present application, the terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only the relationship words determined for the purpose of conveniently describing the structural relationship of the components or elements of the present application, and cannot be understood as the limitation of the present application.​​​​

Claims

1. A breather valve, comprising a valve body (1) and a flange (2) mounted on the bottom, wherein a clamp for locking is installed between the valve body (1) and the flange (2), characterized in that; The bottom of the valve body (1) is integrally connected with a supporting boss (4), one side of the flange (2) is extended with a fixed boss (5) corresponding to the supporting boss (4), a sealing assembly (8) is clamped between the supporting boss (4) and the fixed boss (5), the sealing assembly (8) comprises a sealing ring (9), the sealing ring (9) is protruded in a cylindrical shape towards one side of the supporting boss (4), and the sealing ring (9) is arranged in an inclined state towards one side of the fixed boss (5).

2. A breather valve according to claim 1, characterised in that: The supporting boss (4) is arranged in an S shape.

3. A breather valve according to claim 2, characterised in that: The supporting boss (4) and the valve body (1) are integrally formed by stamping.

4. A breather valve according to claim 3, wherein: The fixed boss (5) is provided with a first sealing slope (10) towards one side of the sealing ring (9), the sealing ring (9) is provided with a second sealing slope (11) matched with the first sealing slope (10), and the first sealing slope (10) is arranged in a gradually reduced state towards one side of the clamp.

5. A breather valve according to claim 4, characterised in that: The sealing ring (9) is extended with an abutting portion (12) towards one side of the clamp, one end of the abutting portion (12) is abutted against the end face of the supporting boss (4), and the other end is abutted against the fixed boss (5), and the fixed boss (5) is protruded with an annular protrusion abutting with the abutting portion (12).

6. A breather valve according to claim 5, characterised in that: The sealing ring (9) is extended with a contact portion (13) away from the abutting portion (12), one end of the contact portion (13) is abutted against the supporting boss (4), and the other end is abutted against one side of the fixed boss (5).

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