Anti-explosion valve sealing structure

Abstract

The utility model discloses an anti-explosion valve sealing structure which comprises a shell capable of being installed in a water supply connector, and an installation cavity is formed in the shell and used for installing an anti-explosion assembly. An external thread is arranged on the outer wall of the shell; the rotary section of the sealing ring is in a [shape; the sealing ring is provided with an annular opening facing the water inlet direction, and an inner ring body and an outer ring body which are located on the inner side and the outer side of the annular opening correspondingly. The inner ring body is arranged on the shell in a sleeving mode, and the outer ring body can deform outwards under the action of water pressure in the annular opening so as to be sealed with the inner threads of the water supply connector. During use, water flow enters the annular opening of the sealing ring, the inner ring body is extruded inwards, the outer ring body is extruded outwards, and in other words, the sealing ring is opened towards the inner side and the outer side from the annular opening. The outer ring body abuts against the inner wall of the water supply connector, and the inner ring body abuts against the outer wall of the shell, so that sealing is achieved. Therefore, a water supply connector without steps can be matched for sealing connection.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bathroom technology, specifically is a kind of explosion-proof valve sealing structure. BACKGROUND

[0002] Explosion-proof valve is installed in water supply interface;Because with the extension of use time, there is aging fracture risk for the angle valve, faucet and other bathroom products installed in water supply interface, leading to water spray out. If not found in time, it is easy to cause property loss by water flooding. Explosion-proof valve can close water supply interface when angle valve, faucet and other burst.

[0003] At present, the sealing mode of explosion-proof valve and water supply interface is single, such as using O-shaped sealing ring, but O-shaped sealing ring is only suitable for water supply interface with internal step, and water leakage is easy to occur for water supply interface without internal step.

[0004] Therefore, the present application is generated in view of the above-mentioned defects in the prior art. SUMMARY

[0005] The main purpose of the utility model is to provide a kind of explosion-proof valve sealing structure, it can be adapted to use water supply interface without step.

[0006] In order to achieve the above purpose, the solution of the utility model is as follows:

[0007] An explosion-proof valve sealing structure, comprising a housing that can be installed in a water supply interface, the housing has an installation cavity inside for installing an explosion-proof assembly;The outer wall of the housing is provided with external threads;

[0008] Further comprising a sealing ring, the rotary section of the sealing ring is in the shape of a Chinese character "fang";The sealing ring has a ring-shaped opening towards the water inlet direction, and an inner ring body and an outer ring body respectively located on the inner and outer sides of the ring-shaped opening;The inner ring body is sleeved on the housing, and the outer ring body can be deformed outward under the action of water pressure in the ring-shaped opening to seal with the internal threads of the water supply interface.

[0009] Further, the inner wall diameter of the outer ring body is greater than the maximum outer diameter of the housing portion between the water inlet side and the inner ring body.

[0010] Further, the side wall of the inner ring body towards the ring-shaped opening side is flush with the outer surface of the housing portion between the water inlet side and the inner ring body.

[0011] Further, the sealing ring is made of rubber or silicone material.

[0012] Further, the end of the sealing ring away from the ring-shaped opening is in axial abutment with the end plane of the external threads.

[0013] Further, the inner side wall diameter of the inner ring body of the sealing ring is 14.5-15mm, and the outer wall diameter of the outer ring body is 18.3-18.5mm.

[0014] Further, a water outlet is arranged on the shell, and a wrench hole is arranged in the water outlet; and the external thread has 1-3 turns of thread.

[0015] After the above structure is adopted, the sealing structure of the explosion-proof valve has at least the following beneficial effects:

[0016] I. During use, water flows into the annular opening of the sealing ring, extrudes the inner ring body inward and the outer ring body outward, and the sealing ring is opened to both sides inward and outward from the annular opening. The outer ring body abuts against the inner wall of the water supply interface, the inner ring body abuts against the outer wall of the shell, and sealing is achieved. In this way, the water supply interface without a step can be sealed and connected.

[0017] II. In order to ensure that the water flow can smoothly enter the annular opening of the sealing ring, and avoid that the outer shell blocks the path of entering the annular opening, the inner wall diameter of the outer ring body is greater than the maximum outer diameter of the shell part between the water inlet side and the inner ring body. Further, the side wall of the inner ring body on the side of the annular opening is flush with the outer surface of the shell part between the water inlet side and the inner ring body. In this way, the water flow between the inner wall of the water supply interface and the outer wall of the shell can enter the annular opening without any obstruction, so that the outer ring body and the inner ring body are opened to achieve sealing.

[0018] III. The sealing ring abuts against the end plane of the external thread to achieve axial positioning of the sealing ring.

[0019] Compared with the prior art, the sealing ring structure is changed, and the explosion-proof valve product can be installed on the water supply interface without a step. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a sectional view of the sealing structure of the explosion-proof valve.

[0021] Figure 2 is a sectional view of the use structure of the explosion-proof valve.

[0022] Figure 3 is Figure 2 is an enlarged structure schematic view of position A.

[0023] Figure 4 is a sectional view of the sealing ring.

[0024] In the drawings:

[0025] The shell 1; installation cavity 11; outer thread 12; water outlet 13; sealing ring 2; annular opening 21; inner ring body 22; outer ring body 23; explosion-proof assembly 3; movable core 31; spring 32; water supply interface 100. DETAILED DESCRIPTION

[0026] In order to further explain the technical scheme of the utility model, the utility model will be described in detail below through specific embodiments.

[0027] As Figures 1 to 4 shown, it is an explosion-proof valve sealing structure related to the utility model, including the shell 1 that can be installed in the water supply interface 100, the shell 1 has installation cavity 11 in it to be used to install explosion-proof assembly 3;The outer wall of shell 1 is provided with outer thread 12;Still including sealing ring 2, the rotary section of sealing ring 2 is in the shape of a Chinese character, sealing ring 2 has annular opening 21 towards the water inlet direction, and inner ring body 22 and outer ring body 23 are located at the inner and outer sides of the annular opening 21 respectively;The inner ring body 22 is sleeved on the shell 1, and the outer ring body 23 can be deformed outward under the water pressure in the annular opening 21 to seal with the internal thread of the water supply interface 100.

[0028] In this way, the explosion-proof valve sealing structure related to the utility model, when using, water flow enters the annular opening 21 of sealing ring 2, and the inner ring body 22 is pressed inward, and the outer ring body 23 is pressed outward, that is, the sealing ring 2 opens inward and outward from the annular opening 21. The outer ring body 23 abuts against the inner wall of the water supply interface, and the inner ring body 22 abuts against the outer wall of the shell 1, so as to realize sealing. In this way, it can be sealed and connected with the water supply interface 100 without steps.

[0029] Preferably, the inner wall diameter of the outer ring body 23 is greater than the maximum outer diameter of the shell 1 part from the water inlet side to the inner ring body 22. Further, the side wall of the inner ring body 22 towards the side of the annular opening 21 is flush with the outer surface of the shell 1 part from the water inlet side to the inner ring body 22.

[0030] In order to ensure that the water flow can smoothly enter the annular opening 21 of the sealing ring 2, and avoid the outer shell 1 from blocking the path of entering the annular opening 21, the inner wall diameter of the outer ring body 23 is greater than the maximum outer diameter of the shell 1 part from the water inlet side to the inner ring body 22. Further, the side wall of the inner ring body 22 towards the side of the annular opening 21 is flush with the outer surface of the shell 1 part from the water inlet side to the inner ring body 22. In this way, the water flow between the inner wall of the water supply interface 100 and the outer wall of the shell 1 can enter the annular opening 21 without obstruction, so that the outer ring body 23 and the inner ring body 22 open to realize sealing.

[0031] Preferably, the sealing ring 2 is made of rubber or silicone. The soft rubber and silicone can be deformed under the action of water pressure, so that the outer ring body 23 and the inner ring body 22 are deformed outwardly and inwardly, respectively.

[0032] Preferably, one end of the sealing ring 2 away from the annular opening 21 is in axial abutment with the end face of the outer thread 12. The sealing ring 2 is in abutment with the end face of the outer thread 12, thereby achieving axial positioning of the sealing ring 2.

[0033] Further, the inner side wall of the inner ring body 22 of the sealing ring 2 has a diameter d of 14.5-15 mm, and the outer wall of the outer ring body 23 has a diameter D of 18.3-18.5 mm. Thus, the inner ring body 22 can be sleeved with the outer wall of the shell 1 under the action of its own elastic force. The gap between the outer ring body 23 and the inner wall of the water supply interface 100 is small, and the deformation required for the outward deformation is small, thereby ensuring good sealing performance.

[0034] Preferably, the shell 1 is provided with a water outlet 13, and the water outlet 13 is provided with a wrench hole. The outer thread 12 has 1-3 turns of thread. The explosion-proof assembly 3 includes a movable core 31 and a spring 32 sleeved outside the movable core 31. The spring 32 is in abutment with the movable core 31 from the water outlet direction to the water inlet direction. The movable core 31 can move back and forth in the installation cavity 11 to block or open the water outlet under the action of water pressure.

[0035] Compared with the prior art, the structure of the sealing ring 2 is changed, and the explosion-proof valve product can be installed on the water supply interface without steps.

[0036] The above embodiments and drawings are not limited to the product form and style of the utility model, and any ordinary skilled person in the art can make appropriate changes or modifications, which should be considered as not departing from the scope of the utility model.

Claims

1. An explosion-proof valve seal structure, characterized by comprising: The shell is capable of being installed in a water supply interface, and has an installation cavity in the shell for installing an explosion-proof assembly; an outer wall of the shell is provided with an outer thread; The sealing ring has a ring-shaped opening facing the water inlet direction, and an inner ring body and an outer ring body located at the inner and outer sides of the ring-shaped opening respectively; the inner ring body is sleeved on the shell, and the outer ring body is capable of deforming outward under the action of water pressure in the ring-shaped opening to seal with an inner thread of the water supply interface.

2. A seal for an explosion relief valve as defined in claim 1, wherein An inner wall diameter of the outer ring body is greater than a maximum outer diameter of a shell part between the water inlet side and the inner ring body.

3. A seal for an explosion relief valve as defined in claim 2, wherein, A side wall of the inner ring body on a side facing the ring-shaped opening is flush with an outer surface of the shell part between the water inlet side and the inner ring body.

4. A seal for an explosion relief valve as defined in claim 1, wherein, The sealing ring is made of rubber or silicone.

5. A seal for an explosion relief valve as defined in claim 1, wherein, An end of the sealing ring away from the ring-shaped opening axially abuts against an end plane of the outer thread.

6. A seal for an explosion relief valve as defined in claim 1, wherein, An inner side wall diameter of the inner ring body of the sealing ring is 14.5-15 mm, and an outer wall diameter of the outer ring body is 18.3-18.5 mm.

7. A seal for an explosion relief valve as defined in claim 1, wherein The shell is provided with a water outlet, and the water outlet is provided with a wrench hole; the outer thread has 1-3 turns of thread.

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