Main valve of wet alarm valve

Abstract

The utility model discloses a main valve of a wet alarm valve, which comprises a valve body, a water through hole, a valve seat, a valve clack component and the like, and is mainly characterized in that a chamfered opening is arranged at a top orifice of the water through hole, top glue is filled in the chamfered opening, and side glue for bonding and fixing is arranged between the outer circumferential surface of the valve seat and the inner circumferential surface of the water through hole. An annular matched contact inclined plane is arranged between the bottom surface of the valve seat and the inner shoulder surface of the annular inner shoulder, and bottom edge glue for bonding and fixing is also arranged on the contact inclined plane; therefore, the top glue and the side glue can be connected into a whole, the side glue which is not dried completely can be effectively prevented from flowing downwards due to gravity, a cavity caused by glue loss between the top orifice and the valve seat is avoided, and the sealing performance of a bonding structure at the position is ensured; meanwhile, due to original inclined surface contact bonding, bottom edge glue which is not dried thoroughly can be prevented from flowing out under the action of gravity, a cavity is prevented from existing at the contact position, and therefore the sealing performance of the bonding structure at the contact position is enhanced.

Description

Technical Field

[0001] This utility model relates to a main valve structure, specifically a wet alarm valve main valve. Background Technology

[0002] Currently, the main structure of a wet alarm valve consists of a valve body, a water passage hole inside the valve body, a valve seat installed inside the water passage hole, and a valve disc assembly that works with the valve seat to seal and open / close the water passage hole. The valve seat is typically bonded to the water passage hole by applying adhesive to its outer circumference. However, in actual use, it has been found that because both the outer circumference of the valve seat and the inner circumference of the water passage hole are relatively smooth, the undried adhesive on the sides easily flows downwards due to gravity, causing a gap between the top opening of the water passage hole and the valve seat. Cavities can form due to glue loss, which greatly affects the sealing performance of the bonding structure. At the same time, an annular inner shoulder is designed inside the water passage for valve seat positioning and mounting, and adhesive is also applied between the bottom surface of the valve seat and the inner shoulder surface of the annular inner shoulder. However, the bottom surface of the valve seat and the inner shoulder surface of the annular inner shoulder are usually in smooth planar contact, so the glue on the bottom edge that has not dried completely will flow outward under the action of gravity, creating cavities at the contact point, thus causing the sealing of the bonding structure to fail. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a wet alarm valve main valve that can effectively prevent glue from flowing out from the contact point between the valve seat and the water inlet to form a cavity, thereby ensuring the sealing performance of the adhesive structure at that point.

[0004] The technical problem of this utility model is solved by the following technical solution:

[0005] A wet alarm valve main valve includes a valve body, a water passage hole inside the valve body, a valve seat inside the water passage hole, and a valve disc assembly that cooperates with the valve seat to achieve sealing and opening / closing of the water passage hole. The water passage hole is provided with an annular inner shoulder for positioning and installing the valve seat. The top opening of the water passage hole is provided with a chamfered opening, which is filled with top adhesive. The outer circumferential surface of the valve seat and the inner circumferential surface of the water passage hole are provided with side adhesive for bonding and fixing. The bottom surface of the valve seat and the inner shoulder surface of the annular inner shoulder are provided with an annular contact slope, and the bottom edge adhesive is also provided on the contact slope for bonding and fixing.

[0006] The bottom surface of the valve seat is a concave inclined surface that slopes inward from the outer circumference to the inner circumference, and the inner shoulder surface of the annular inner shoulder is a convex inclined surface that slopes outward from the outer circumference to the inner circumference. The concave inclined surface and the convex inclined surface meet to form an annular contact inclined surface.

[0007] The included angle of the contact slope is 4°~6°.

[0008] The concave inclined surface is provided with multiple bottom edge water ripple lines arranged concentrically with the axis of the valve seat as the center, and the bottom edge adhesive is filled in the bottom edge water ripple lines.

[0009] The valve seat has multiple circumferential water ripple lines on its outer circumference, and the side adhesive fills the water ripple lines.

[0010] The top adhesive and the side adhesive are bonded together as one unit.

[0011] Compared with the prior art, this utility model mainly features a chamfered opening at the top of the water passage, filled with top adhesive. Side adhesive is also provided between the outer circumferential surface of the valve seat and the inner circumferential surface of the water passage, and a ring-shaped contact slope is provided between the bottom surface of the valve seat and the inner shoulder surface of the annular inner shoulder, with bottom adhesive also provided on this contact slope. The chamfered opening and top adhesive integration effectively prevents the undried side adhesive from flowing downwards due to gravity, avoiding cavities between the top of the water passage and the valve seat caused by adhesive loss, thus ensuring the sealing performance of the adhesive structure. Simultaneously, the unique sloped contact bonding also prevents the undried bottom adhesive from flowing outwards under gravity, avoiding cavities at the contact point, thereby enhancing the sealing performance of the adhesive structure. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0013] Figure 2 This is a magnified view of the valve seat installed inside the water inlet.

[0014] Figure 3 for Figure 2 A schematic diagram showing the separation of the valve seat from the water inlet. Detailed Implementation

[0015] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figures 1-3 As shown, 1. Valve body, 11. Water inlet, 12. Annular inner shoulder, 13. Chamfered opening, 2. Valve seat, 21. Side water ripple line, 22. Bottom water ripple line, 3. Valve disc assembly, 4. Top adhesive, 5. Side adhesive, 6. Bottom adhesive, 7. Contact bevel, 71. Inner concave bevel, 72. Outer convex bevel.

[0017] A type of wet alarm valve main valve, such as Figure 1 As shown, its structure includes a valve body 1, a water passage hole 11 inside the valve body, a valve seat 2 inside the water passage hole, and a valve disc assembly 3 that cooperates with the valve seat to achieve the sealing and opening / closing of the water passage hole.

[0018] The water passage hole 11 has a vertical axis, and an annular inner shoulder 12 is provided inside the water passage hole 11 for positioning and installation of the valve seat 2.

[0019] The top opening of the water passage 11 is provided with a chamfered opening 13, which is filled with top adhesive 4. The outer circumferential surface of the valve seat 2 and the inner circumferential surface of the water passage 11 are provided with side adhesive 5 for bonding and fixing. The top adhesive 4 and the side adhesive 5 are integrated. That is to say, the design of the chamfered opening 13 and the filling of the top adhesive 4 can effectively prevent the side adhesive 5 that has not dried completely from flowing downward due to gravity after the top adhesive 4 and the side adhesive 5 are integrated, thus avoiding the cavity caused by adhesive loss between the top opening of the water passage 11 and the valve seat 2, thereby ensuring the sealing performance of the bonding structure.

[0020] Meanwhile, the outer circumferential surface of the valve seat 2 is also provided with multiple circumferential side water ripple lines 21, for example in this embodiment. Figure 3 The diagram shows two side water ripple lines 21, both of which are filled with side adhesive 5. The purpose of these lines is to increase the contact area between the side adhesive 5 and the outer circumferential surface of the valve seat 2 and to improve the distribution of the side adhesive 5. This effectively enhances the bonding strength between the side adhesive 5 and the outer circumferential surface of the valve seat 2 and reduces the risk of leakage of the side adhesive 5.

[0021] The bottom surface of the valve seat 2 and the inner shoulder surface of the annular inner shoulder 12 are provided with an annular contact slope 7. Specifically, the bottom surface of the valve seat 2 is provided with an inwardly concave slope 71 that is inclined from the outer circumference to the inner circumference, and the inner shoulder surface of the annular inner shoulder 12 is provided with an outwardly convex slope 72 that is inclined from the outer circumference to the inner circumference. The inwardly concave slope 71 and the outwardly convex slope 72 can be matched to form an annular contact slope 7, and the bottom edge adhesive 6 is also provided on the contact slope for bonding and fixing.

[0022] The included angle of inclination of the contact slope 7 is 4°~6°, that is Figure 2 The angle α shown is used, and the angle of inclination of the contact slope 7 is usually chosen to be 5° as the optimal angle.

[0023] Obviously, this unique inclined contact bonding method can also prevent the undried bottom edge glue 6 from flowing out under the action of gravity, avoid the presence of cavities at the contact point, and thus enhance the sealing performance of the bonding structure at this point.

[0024] The concave inclined surface 71 is also provided with multiple bottom edge water ripple lines 22, which are arranged in concentric circles with the axis of the valve seat 2 as the center. In this embodiment, for example... Figure 3Two bottom edge water ripple lines 22 are provided, and both bottom edge water ripple lines are filled with bottom edge adhesive 6. The purpose of this is to increase the contact area between the bottom edge adhesive 6 and the bottom surface of the valve seat and to improve the distribution of the bottom edge adhesive, thereby effectively enhancing the bonding strength between the bottom edge adhesive 6 and the bottom surface of the valve seat and reducing the risk of leakage of the bottom edge adhesive 6.

[0025] Obviously, the above-mentioned structural improvements can effectively prevent glue from flowing out from the contact point between the valve seat 2 and the water inlet 11 and forming a cavity, thereby ensuring sealing performance.

[0026] The above description is only a specific embodiment of this utility model. Those skilled in the art should understand that any structural design equivalent to this embodiment should be included within the protection scope of this utility model.

Claims

1. A wet alarm valve main valve, comprising a valve body (1), a water passage hole (11) within the valve body, a valve seat (2) within the water passage hole, and a valve disc assembly (3) that cooperates with the valve seat to achieve sealing and opening / closing of the water passage hole (11), wherein the water passage hole (11) is provided with an annular inner shoulder (12) for positioning and mounting the valve seat (2), characterized in that The top opening of the water passage (11) is provided with a chamfered opening (13), and the chamfered opening is filled with top glue (4); the outer circumferential surface of the valve seat (2) and the inner circumferential surface of the water passage (11) are provided with side glue (5) for bonding and fixing; the bottom surface of the valve seat (2) and the inner shoulder surface of the annular inner shoulder (12) are provided with an annular contact slope (7), and the bottom edge glue (6) for bonding and fixing is also provided on the contact slope.

2. The main valve of a wet alarm valve according to claim 1, characterized in that... The bottom surface of the valve seat (2) is a concave inclined surface (71) that is concave inward from the outer circumference to the inner circumference, and the inner shoulder surface of the annular inner shoulder (12) is a convex inclined surface (72) that is convex inward from the outer circumference to the inner circumference. The concave inclined surface (71) matches the convex inclined surface (72) to form an annular contact inclined surface (7).

3. The main valve of a wet alarm valve according to claim 1, characterized in that... The included angle of the contact slope (7) is 4°~6°.

4. The main valve of a wet alarm valve according to claim 2, characterized in that... The concave inclined surface (71) is provided with multiple bottom edge water ripple lines (22) arranged in concentric circles with the axis of the valve seat (2) as the center, and the bottom edge glue (6) is filled in the bottom edge water ripple lines (22).

5. The main valve of a wet alarm valve according to claim 1, characterized in that... The valve seat (2) has multiple circumferential water ripple lines (21) on its outer circumference, and the side glue (5) fills the water ripple lines (21).

6. The main valve of a wet alarm valve according to claim 1, characterized in that... The top adhesive (4) and the side adhesive (5) are integrated into one piece.

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