Novel anti-explosion water stop valve

Abstract

The utility model discloses a novel explosion-proof water stop valve, which is installed on a water pipe connector to be butted with a connector of a water outlet connecting piece when in use, and comprises a core with a water flow channel, one end of the water flow channel is a water inlet end, and the other end of the water flow channel is a water outlet end. The core is provided with a fixed connection structure and a water stop sealing structure for achieving leakage prevention between the core and the water pipe connector and / or the water outlet connecting piece, and the core is further provided with a self-closing structure for self-closing the water flow channel, an opening structure for self-opening the water flow channel and an impact anti-explosion structure capable of blocking the water flow channel when water pressure changes abnormally. The anti-explosion water stop valve of the structure can be automatically closed when no water outlet connection exists, when water outlet connecting pieces such as a water outlet valve are installed, the self-sealing non-raw-material-tape use can be achieved, the impact anti-explosion structure can achieve the water stop function effect under the water outlet conditions such as faucet breakage, valve element burst and hose burst, and the service life of the anti-explosion water stop valve is prolonged. And the quick explosion-proof and water-stopping effects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of water stop valve products, and in particular to the field of water stop valve product structure used in water pipe joints. Background Technology

[0002] Chinese Patent Application No. 202323292846.0, filed on December 1, 2023, discloses a utility model patent application for a self-sealing one-way stop valve and a water pipe connector with a self-sealing function. The water pipe connector with this structure can achieve self-sealing when not connected to faucets, angle valves, or other water outlet control components, eliminating the need for plugs. When connected to faucets, angle valves, or other water outlet control components, it eliminates the need to wrap PTFE tape to prevent leakage. It reduces the inconvenience of frequently switching the main valve on and off during water circuit installation, testing, maintenance, and replacement of faucets. It eliminates the need for professional technicians to perform installation, maintenance, and replacement operations. Therefore, the product structure of this patent application presents a new type of plumbing product with significant benefits.

[0003] In real life, in addition to the above-mentioned situations where a water valve is not connected and water needs to be stopped, there are also abnormal situations such as broken faucets, burst valve cores, burst hoses, etc. When abnormal situations occur, the water-stopping activity of the core component in the above-mentioned patent application may not be achieved. In real life, this has led to serious damage such as water overflowing into indoor rooms, causing water damage to furniture, wooden floors, etc. In view of this, the inventors of this case continued to research and improve on the existing structure, which led to this case. Summary of the Invention

[0004] The purpose of this utility model is to provide a new type of explosion-proof water stop valve that has been enhanced with water-stopping function to cope with situations such as broken faucets, burst valve cores, and burst hoses.

[0005] To achieve the above objectives, the technical solution of this utility model is: a novel explosion-proof water stop valve, which is installed on a water pipe joint for connection with the interface of the water outlet connector during use. It includes a core with a water flow channel, one end of which is the water inlet and the other end of which is the water outlet. The core is provided with a fixing structure for fixing the core to the water pipe joint and a water-stop sealing structure for preventing leakage between the water pipe joint and / or the water outlet connector. The core is also provided with a self-closing structure for the water flow channel, a self-opening structure for the water flow channel, and an impact explosion-proof structure that can block the water flow channel when the water pressure changes abnormally.

[0006] The impact-proof structure includes an explosion-proof water-stop section on the core, an installation cavity formed by the water flow channel corresponding to the explosion-proof water-stop section, and an explosion-proof water-stop component installed in the explosion-proof water-stop section that can flexibly block the water flow channel when the water pressure changes abnormally.

[0007] The explosion-proof water-stop section has an inner baffle at one end facing the water inlet and an outer baffle at one end facing the water outlet. The inner baffle is configured to block the explosion-proof water-stop component installed in the mounting cavity without affecting the flow of water through the channel. The outer baffle has a through-hole for connecting the water flow channel. The explosion-proof water-stop hole is configured to be blocked by the explosion-proof water-stop component installed in the mounting cavity, thereby blocking the water flow channel. Alternatively, the explosion-proof water-stop section has an outer baffle at one end facing the water outlet, and the outer baffle has a through-hole for connecting the water flow channel. The explosion-proof water-stop hole is configured to be blocked by the explosion-proof water-stop component installed in the mounting cavity, thereby blocking the water flow channel.

[0008] The explosion-proof water-stopping component includes an elastic component and a movable component; one end of the elastic component abuts against the outer stop and the other end abuts against the movable component, and the elastic component elastically pushes the movable component against the inner stop; or, one end of the elastic component is fixedly connected to the outer stop and the other end is fixedly connected to the movable component.

[0009] The core includes an outer shell and a water-stopping movable rod that is axially movable and passes through the outer shell; the water-stopping movable rod forms the water flow channel axially inside, the explosion-proof water-stopping section is connected and disposed on the water-stopping movable rod, and the part of the water-stopping movable rod corresponding to the explosion-proof water-stopping section is the outer cylinder section.

[0010] The explosion-proof water-stopping section on the water-stopping movable rod is either integrally formed with the water-stopping movable rod or is an integral structure assembled and connected with the water-stopping movable rod.

[0011] The self-closing structure is provided at the end of the water-stopping movable rod facing the water inlet end, which is a water-sealing structure for its axial movement and sealing the end of the outer shell to block water flow to the water inlet end. The water inlet end of the water flow channel is provided with a water inlet on the side wall between the explosion-proof water-stopping section and the water-sealing structure on the water-stopping movable rod. A self-push structure is provided between the outer shell and the water-stopping movable rod, which is pushed by elastic tension so that its water-sealing structure can block the end of the outer shell. And / or, the opening structure is provided at the end of the water-stopping movable rod, which is a push part for the water supply and outlet connection to abut and push its movement. And / or, the water-stopping sealing structure includes a push sealing structure, which is a leak-proof structure that prevents water from not flowing out through the water flow channel and prevents water from not entering the water outlet connection when the opening structure is opened.

[0012] The pushing part is a protruding edge protruding from the outside of the water-stopping rod, and the explosion-proof water-stopping section corresponds to the side of the pushing part facing the water outlet end. The outer diameter of the explosion-proof water-stopping section is smaller than the outer diameter of the protruding edge, forming a structure that can be embedded in the water outlet connector during installation and use; or, the pushing part is a protruding edge protruding from the outside of the end of the water-stopping rod facing the water outlet end; or, the pushing part is the end face of the explosion-proof water-stopping section facing the water outlet end.

[0013] The push-sealing structure is provided with a U-shaped sealing gasket on the push part, which can seal against the open sealing end of the outer shell and the water supply connection.

[0014] By adopting the above technical solution, the beneficial effects of this utility model are as follows: The novel explosion-proof water-stop valve with the above-described structure can achieve a seal between the valve and the water pipe joint and outlet connection through the water-stop sealing structure during installation and use, preventing leakage. Due to the self-closing and opening structures on the core, the valve can close the water flow channel on the core through the self-closing structure, preventing water flow and effectively stopping water. Therefore, after the valve is installed on the water pipe joint, there is no need to use plugs or wrapping Teflon tape for water plugging before installing the outlet connection or after removal; it can automatically stop water flow, which is simple to operate, saves operating time, and saves on Teflon tape consumables. The opening structure allows for direct installation of the outlet connection without the need for residual Teflon tape, greatly improving installation convenience. Furthermore, if the outlet valve becomes loose, bursts, or is damaged and detaches from the water pipe joint, the valve can immediately and automatically close under the action of the self-closing structure to stop water flow. The structural effect described above represents the first layer of explosion-proof protection for this novel explosion-proof water stop valve. Its improved impact-resistant explosion-proof structure provides a second layer of protection. Specifically, this is because its design blocks the water flow path in the event of abnormal water pressure changes. Under this structure, the water pressure in normal domestic water pipes remains within a normal range. However, if the outlet valve or its connected pipe bursts, a sudden pressure increase occurs, resulting in an abnormal water pressure change. The impact-resistant explosion-proof structure immediately blocks the water flow path, thus achieving the second layer of protection. This effectively prevents serious damage such as water spillage into furniture and wooden floors caused by broken faucets or burst valve cores. After the water pressure returns to normal, the impact-resistant explosion-proof structure automatically releases the blockage. This novel explosion-proof water stop valve features a compact and stable structure, reliable function, ease of manufacturing, and convenient assembly. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural diagram of the first type of explosion-proof water stop valve involved in this utility model.

[0016] Figure 2 yes Figure 1 Cross-sectional structural diagram of the product.

[0017] Figure 3 yes Figure 1 Exploded view of the product structure.

[0018] Figure 4 This is a schematic diagram of the second structure of a novel explosion-proof water stop valve involved in this utility model.

[0019] Figure 5 This is a schematic diagram of the third structure of a novel explosion-proof water stop valve involved in this utility model.

[0020] Figure 6 This is a schematic diagram of the fourth structure of a novel explosion-proof water stop valve involved in this utility model.

[0021] Figure 7 This is a schematic diagram of the fifth structure of a novel explosion-proof water stop valve involved in this utility model.

[0022] Figure 8 This is a schematic diagram of the sixth structure and usage state of a novel explosion-proof water stop valve involved in this utility model.

[0023] In the picture:

[0024] Water pipe connector 100; the core 10; water flow channel 1; water inlet 11; water outlet 12;

[0025] Explosion-proof waterstop section 13; mounting cavity 14; inner baffle 15; outer baffle 16; explosion-proof waterstop hole 161;

[0026] 2. Fixed connection structure; 3. Water-stop sealing structure; 31. Push sealing structure; 32. Fixed connection sealing structure;

[0027] 4. Self-closing structure; 5. Opening structure; 51. Propulsion unit; 6. Impact-proof explosion-proof structure;

[0028] Explosion-proof water-stopping component 7; elastic component 71; movable component 72; outer shell 8; open sealing end 81;

[0029] 82. End plug; 83. Outer end section; 84. Inner end section; 85. Sealing section; 86. Locking external thread;

[0030] Water-stopping movable rod 9; outer cylinder section 91; water-sealing structure 92; sealing ring 921;

[0031] Self-propelled structure 922; cooperative operation structure 93. Detailed Implementation

[0032] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0033] This embodiment discloses a novel explosion-proof water stop valve, mainly used in domestic water supply systems, such as... Figure 8 As shown, during use, it is embedded and locked onto the water pipe connector 100 (commonly available in elbow and straight pipe types) for connection with the outlet fitting (angle valve, faucet, etc.), and its structure is as follows. Figures 1-8 As shown, it mainly includes a core 10 with a water flow channel 1, one end of which is an inlet 11 and the other end is an outlet 12. The core 10 is provided with a fixing structure 2 for fixing the core 10 to the water pipe connector 100 and a water-stop sealing structure 3 for preventing leakage between the water pipe connector 100 and / or the outlet connector. The core 10 is also provided with a self-closing structure 4 for the self-closing water flow channel 2, an opening structure 5 for the self-opening water flow channel 2, and an impact-proof and explosion-proof structure 6 for blocking the water flow channel 2 when the water pressure changes abnormally.

[0034] The impact-proof explosion-proof structure 6 described in this embodiment is as follows: Figures 2-8 The diagram shows a core 10 with an explosion-proof water-stop section 13, an installation cavity 14 formed by a water flow channel 1 corresponding to the explosion-proof water-stop section 13, and an explosion-proof water-stopping component 7 disposed within the explosion-proof water-stop section 13, which can voluntarily block the water flow channel 1 when there are abnormal changes in water pressure (the explosion-proof water-stopping component 7 is a structural design that utilizes the water pressure change within the water flow channel at the moment of bursting of a hose, faucet, etc., to achieve the working conditions of the explosion-proof water-stopping component and stop water). The core 10 includes an outer shell 8 and an axially movable water-stopping rod 9 passing through the outer shell 8; the water flow channel 1 is formed axially inside the water-stopping rod 9, the explosion-proof water-stop section 13 is disposed on the water-stopping rod 9, and the portion of the water-stopping rod 9 corresponding to the explosion-proof water-stop section 13 is an outer cylinder section 91. In practical applications, if the product has ample installation space, the following structure can be used to form the outer shell extension section of the water flow channel 1 within the axial extension of the outer shell 8. For example, the outer shell 8 extends towards the water inlet end 11, and the explosion-proof water-stopping section 13 is disposed on the outer shell extension section, which is the outer cylinder section 91. This embodiment does not provide detailed illustrations and descriptions of this structure. Those skilled in the art can adapt the structure disposed on the water-stopping movable rod 91 to the outer shell extension section. The structure disposed on the water-stopping movable rod 91 is more compact, simplifies the product component structure, and facilitates assembly operations.

[0035] like Figure 2 and Figure 3As shown, the explosion-proof water-stop section 13 has an inner baffle 15 at one end facing the water inlet 11 and an outer baffle 16 at one end facing the water outlet 12. The inner baffle 15 is configured to block the explosion-proof water-stop 7 installed in the mounting cavity 14 without affecting the flow of water through the channel 1. The outer baffle 16 has a through explosion-proof water-stop hole 161 that connects to the water flow channel 1. The explosion-proof water-stop hole 161 is configured to be blocked by the explosion-proof water-stop 7 installed in the mounting cavity 14, thereby blocking the water flow channel 11. The explosion-proof water-stop 7 includes an elastic member 71 and a movable member 72. One end of the elastic member 71 abuts against the outer baffle 16, and the other end abuts against the movable member 72. The elastic member 71 elastically pushes the movable member 72 against the inner baffle 15. Figure 3 As shown, the movable part 72 is provided with a sealing part that can block the explosion-proof water-stop hole 161. The elastic part 71 is a conical spring, with its larger diameter end abutting against the edge of the explosion-proof water-stop hole 161. The sealing part is formed by the movable part 72 protruding towards the explosion-proof water-stop hole 161, and the smaller diameter end of the spring is sleeved on the sealing part. The sealing part forms a sealing guide structure. In this way, by selecting a suitable spring with an elastic coefficient that can be compressed when the water pressure increases abnormally, that is, when the water pressure increases abnormally, the movable part 72 can be pushed to compress the spring (for example, the normal flowing water pressure in the domestic water pipes does not exceed 0.5 MPa. In the event of a burst faucet, angle valve, hose, etc., the pressure will be reduced). At this time, the water pressure will exceed 0.5 MPa. The spring can be selected with a water pressure greater than 0.5 MPa (the elastic coefficient of the compressed part can be exceeded), so that the sealing part is pushed towards the explosion-proof water-stop hole 161 and blocks the explosion-proof water-stop hole 161, thereby achieving immediate water stop during the explosion. It can also keep the explosion-proof water-stop hole 161 blocked before the problem of abnormal water pressure is dealt with, thereby achieving the above-mentioned objective effect of this utility model. After the abnormal water pressure is relieved, the pressure that pushes the compression of the explosion-proof water-stop 7 disappears. Under the action of the elastic tension of the explosion-proof water-stop 7, the movable block 72 automatically resets, the explosion-proof water-stop hole 161 is unblocked, and the water flow channel 1 at the explosion-proof water-stop section 13 is restored to flow. The water pressure in the water flow channel 1 is in a normal state, and the explosion-proof water-stop section 13 is in a normal state.

[0036] Alternatively, the structure of the inner baffle 15 can be omitted from the above structure (the structure of other components is described above). The explosion-proof waterstop 7 needs to be improved by fixing one end of the elastic member 71 to the outer baffle 16 and the other end to the movable member 72. This can also achieve the function of the explosion-proof waterstop 7.

[0037] The explosion-proof water-stopping section 13 on the water-stopping movable rod 9 is either integrally formed with the water-stopping movable rod 9 or is an integral structure assembled and connected with the water-stopping movable rod 9, such as... Figure 2 , Figures 4-8 There are three different assembly and connection structures. For example... Figure 5 , 6 and Figure 7 As shown, the outer cylinder section 91 is an integrally formed structure extending from the end of the water-stopping movable rod 9 toward the water outlet; or, as... Figure 2 , 3 4 and Figure 8As shown, the outer cylinder section 91 is an independent component that is fixedly connected to the water-stop movable rod 9 by a connecting structure. Further, in the case where the outer cylinder section 91 is an independent component, the inner baffle 15 and the outer baffle 16 are also independent components assembled into a fixed whole by a connecting structure. A leak-proof sealing structure is provided between the outer cylinder section 91 and the water-stop movable rod 9, and between the outer baffle 16 and the outer cylinder section 91; or, in the case where the outer cylinder section 91 is an independent component, the outer baffle 16 is an independent component assembled into a fixed whole by a connecting structure, the inner baffle 15 and the outer cylinder section 91 are integrally formed, and a leak-proof sealing structure is provided between the outer cylinder section 91 and the water-stop movable rod 9, and between the outer baffle 15 and the outer cylinder section 91; or, In the case where the outer cylinder section 91 is an independent component, the inner baffle is also an independent component assembled into a fixed whole through a connecting structure. The outer baffle 16 and the outer cylinder section 91 are integrally formed structures, and a leak-proof sealing structure is provided between the outer cylinder section 91 and the water-stopping movable rod 9. Alternatively, in the case where the outer cylinder section 91 is an integrally formed structure extending from the end of the water-stopping movable rod 9 towards the water outlet, the outer baffle 16 is an integrally formed structure, and the inner baffle 15 is an independent component fixedly connected to the outer cylinder section 91 through a connecting structure. The end of the water-stopping movable rod 9 towards the water inlet 11 has an assembly locking structure, which has an mounting... Alternatively, in a structure where the outer cylinder section 91 is an integrally formed extension of the end of the water-stopping movable rod 9 towards the water outlet 12, the inner baffle 15 is an integrally formed structure, and the outer baffle 16 is an independent component that is fixedly connected to the outer cylinder section 91 by a connecting structure and a leak-proof sealing structure is provided between them; or, in a structure where the outer cylinder section 91 is an integrally formed extension of the end of the water-stopping movable rod 9 towards the water outlet 12, the outer baffle 16 is an independent component that is fixedly connected to the outer cylinder section 91 by a connecting structure and a leak-proof sealing structure is provided between them, and the inner baffle 15 is an independent component that is fixedly connected to the outer cylinder section 91 by a connecting structure and a leak-proof sealing structure is provided between them. The outer cylinder section 91 is fixedly connected as a whole; or, in the case where the outer cylinder section 91 is an independent component, the inner baffle 15 and the water-stopping movable rod 9 are integrally formed, and the outer baffle 16 is an independent component that is fixedly connected to the outer cylinder section 91 through a connecting structure. A leak-proof sealing structure is provided between the outer cylinder section 91 and the water-stopping movable rod 9, and between the outer baffle 16 and the outer cylinder section 91; or, in the case where the outer cylinder section 91 is an independent component, the inner baffle and the water-stopping movable rod 9 are integrally formed, and the outer baffle and the outer cylinder section 91 are integrally formed. A leak-proof sealing structure is provided between the outer cylinder section 91 and the water-stopping movable rod 9.Alternatively, the outer cylinder section 91 may be an integrally formed structure extending from the end of the water-stopping movable rod 9 toward the water outlet 12, wherein the outer baffle 16 and the inner baffle 15 are independent components, the inner baffle 15 is a sleeve structure nested inside the outer cylinder section 91, the end of the inner baffle 15 facing the water inlet 11 forms a blocking structure and the interior of the inner baffle 15 forms a cavity, and the outer baffle 16 is connected to the outer cylinder section 91 by a connecting structure and a leak-proof sealing structure is provided between them; or, the outer cylinder section 91 may be the water-stopping movable rod 9 In the integrally formed structure extending towards the water outlet 12, the outer baffle 16 and the inner baffle 15 are independent components. The inner baffle 15 is nested within the outer cylinder section 91 in a sleeve structure. The end of the inner baffle 15 facing the water inlet 11 forms a blocking structure to block the explosion-proof water-stopping component 7, and the interior of the inner baffle 15 forms a cavity. The outer baffle 16 is connected to the end of the inner baffle 15 facing the water outlet 12 via a connecting structure. A leak-proof sealing structure is provided between the outer cylinder section 91, the inner baffle 15, and the outer baffle 16. If the structure of the inner baffle 15 is omitted, the structure in the above embodiment and the accompanying drawings will be omitted accordingly.

[0038] The self-closing structure 4, such as Figure 1 , Figure 2 and Figure 3 As shown, the end of the water-stopping movable rod 9 facing the water inlet 11 is provided with a water-sealing structure 92 for its axial movement and sealing the end of the outer shell 8 to block water flow to the water inlet 11. The end of the outer shell 8 facing the water outlet 12 is the open sealing end 81, and the end facing the water inlet 11 is the sealing end 82. The end of the water-stopping movable rod 9 protrudes outside the sealing end 82 and is fixedly fitted with a sealing ring 921. There is a self-pushing structure 922 between the outer shell 8 and the water-stopping movable rod 9, which pushes the water-stopping movable rod 9 with elastic tension so that its sealing ring 921 can seal the sealing end 82. The water inlet 11 of the water flow channel 1 is provided with a water inlet on the side wall between the explosion-proof water-stopping section 13 and the water-sealing structure 92 on the water-stopping movable rod 9.

[0039] The opening structure 5 includes a pushing part 51 for the water supply and outlet connector to abut against and push its movement on the water-stopping movable rod 9; such as Figure 2 and Figure 3As shown, the pushing part 51 is a protruding edge on the outer side of the stopper rod 9. The explosion-proof water-stop section 13 corresponds to the side of the pushing part 51 facing the water outlet end 12. The outer diameter of the explosion-proof water-stop section 13 is smaller than the outer diameter of the protruding edge, forming a structure that can be embedded in the water outlet connector during installation and use. The protruding edge of this structure corresponds to the open sealing end 81 of the outer shell. During pushing, the water-stop sealing structure 3 can seal the protruding edge with the open sealing end 81 and the port of the water outlet connector, thereby achieving a sealed connection after pushing. The pushing part 51 can also be a protruding edge on the outer side of the end of the stopper rod 9 facing the water outlet end 12; or, the pushing part 51 can be the end face of the explosion-proof water-stop section 13 facing the water outlet end 12. The specific structural setting can be selected according to the product design (not shown).

[0040] The water-stop sealing structure 3, such as Figure 2 and Figure 3 As shown, it includes a push-sealing structure 31, which is a leak-proof structure designed to prevent water from failing to flow out through the water flow channel 1 and to prevent water from failing to enter the water outlet connector when the opening structure 5 is open. In this embodiment, the push-sealing structure 31 is a U-shaped sealing gasket provided on the push part 51, which can seal against the opening sealing end 81 of the outer shell 8 and the water supply / outlet connector. The U-shaped sealing gasket can be stably fitted onto the push part 51, effectively maintaining structural stability and a tight seal to prevent leakage.

[0041] The water-stopping movable rod 9 and the outer shell 8 are nested together by a structure that allows for guided movement but not circumferential rotation. The end of the water-stopping movable rod 9 facing the water outlet 12 is provided with a mating operation structure 93 for a mating tool to achieve a fixed connection. For example... Figure 2 and Figure 3 As shown, the outer shell 8 and the water-stopping movable rod 9 have nested guide sections. The water-stopping movable rod 9 has a square section, and the outer shell 8 has a corresponding square section. Alternatively, the nested guide sections can have a cross-sectional profile that matches the nested guide, forming a polygon or a circle, or a structure where a guide protrusion and guide groove engage between the nested guide sections. The screwing operation involves a mating structure 93 at the end of the water-stopping movable rod 9 facing the water outlet 12, for connecting with an installation tool. As shown, the outer stop 16 provides a mating structure 93 outside the explosion-proof water-stopping hole 161 facing the water outlet 12, allowing for a fixed connection with the tool. The structure shown is an internal hexagonal mating hole.

[0042] The fixed structure 2 is disposed on the outer shell 8. The outer side of the outer shell 8 includes an outer end section 83 near the open sealing end 81, an inner end section 84 near the sealing end 82, and a sealing section 85 between the outer end section 83 and the inner end section 84. The diameter of the outer end section 83 is larger than the diameters of the inner end section 84 and the sealing section 85. The inner end section 84 or the outer end section 83 is provided with a locking external thread 86, such as... Figure 4 and Figure 5 The inner end section 84 is provided with a locking external thread 86, which is suitable for a new type of water pipe joint with internal thread sections of different diameters, while the outer end section 83 is provided with a locking external thread 86, which can be used for existing conventional internal thread sections of one diameter. To achieve universal applicability, both the inner end section 84 and the outer end section 83 can be provided with locking external threads 86.

[0043] The water-stop sealing structure 3 includes a fixed sealing structure 32 disposed on the sealing section 85, such as... Figure 2 and Figures 4-8 As shown, the fixed sealing structure 32 consists of a sealing gasket with an O-shaped or square circumferential rotating cross-section, or a self-expanding sealing ring with a U-shaped circumferential rotating cross-section, fitted onto the sealing section 85. As shown, there are both O-shaped and U-shaped self-expanding sealing rings. Figure 6 The opening side of the U-shape shown faces the sealing end. The two arms of the U-shape form a sealing inner ring and a sealing outer ring. The outer diameter of the end of the sealing inner ring is smaller than the outer diameter of the positioning groove, and the inner diameter of the sealing outer ring is larger than the outer diameter of the positioning groove. In this way, water is poured into the U-shaped opening through the water pipe joint, and the water pressure will expand the U-shape to achieve a better sealing effect.

[0044] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A novel explosion-proof stop valve, which is installed on a water pipe connector for connection with the outlet connection component, characterized in that, The device includes a core with a water flow channel, one end of which is an inlet and the other end is an outlet. The core is provided with a fixing structure for fixing the core to a water pipe joint and a water-stop sealing structure for preventing leakage between the core and the water pipe joint and / or the outlet connection. The core is also provided with a self-closing structure for the water flow channel, an opening structure for the water flow channel, and an impact-proof and explosion-proof structure that can block the water flow channel when the water pressure changes abnormally. The impact-proof structure includes an explosion-proof water-stop section on the core, an installation cavity formed by the water flow channel corresponding to the explosion-proof water-stop section, and an explosion-proof water-stop component installed in the explosion-proof water-stop section that can flexibly block the water flow channel when the water pressure changes abnormally.

2. The novel explosion-proof stop valve as described in claim 1, characterized in that, The explosion-proof water-stop section has an inner baffle at one end facing the water inlet and an outer baffle at one end facing the water outlet. The inner baffle is configured to block the explosion-proof water-stop component installed in the mounting cavity without affecting the flow of water through the channel. The outer baffle has a through-hole for connecting the water flow channel. The explosion-proof water-stop hole is configured to be blocked by the explosion-proof water-stop component installed in the mounting cavity, thereby blocking the water flow channel. Alternatively, the explosion-proof water-stop section has an outer baffle at one end facing the water outlet, and the outer baffle has a through-hole for connecting the water flow channel. The explosion-proof water-stop hole is configured to be blocked by the explosion-proof water-stop component installed in the mounting cavity, thereby blocking the water flow channel.

3. The novel explosion-proof stop valve as described in claim 2, characterized in that, The explosion-proof water-stopping component includes an elastic component and a movable component; one end of the elastic component abuts against the outer stop and the other end abuts against the movable component, and the elastic component elastically pushes the movable component against the inner stop; or, one end of the elastic component is fixedly connected to the outer stop and the other end is fixedly connected to the movable component.

4. A novel explosion-proof stop valve as described in any one of claims 1-3, characterized in that, The core includes an outer shell and a water-stopping movable rod that is axially movable and passes through the outer shell; the water-stopping movable rod forms the water flow channel axially inside; The explosion-proof water-stop section is connected to the water-stop movable rod, and the portion of the water-stop movable rod corresponding to the explosion-proof water-stop section is an outer cylinder section; or, the outer shell body extends axially to form the water flow channel in the inner part of the outer shell body, and the explosion-proof water-stop section is disposed on the outer shell body extension section, which is an outer cylinder section.

5. A novel explosion-proof stop valve as described in claim 4, characterized in that, The explosion-proof water-stopping section on the water-stopping movable rod or the outer shell is an integrally formed structure or an assembled connection to form an integral structure. And / or, the self-closing structure is provided at the end of the water-stopping movable rod facing the water inlet end, which is used for its axial movement and to seal the end of the outer shell to block water from flowing to the water inlet end. The water inlet end of the water flow channel is provided with a water inlet on the side wall between the explosion-proof water-stopping section and the water-sealing structure on the water-stopping movable rod. A self-push structure is provided between the outer shell and the water-stopping movable rod, which is pushed by elastic tension so that its water-sealing structure can block the end of the outer shell. And / or, the opening structure is such that the water-stopping movable rod is provided with a pushing part for the water supply and outlet connector to abut against and push its movement; And / or, the water-stop sealing structure includes a push-seal structure, which, when the opening structure is opened, prevents water from flowing out through the water flow channel and prevents water from entering the outlet connection, thus providing a leak-proof structure.

6. A novel explosion-proof stop valve as described in claim 5, characterized in that, The pushing part is a protruding edge protruding from the outside of the water-stopping rod, and the explosion-proof water-stopping section corresponds to the side of the pushing part facing the water outlet end. The outer diameter of the explosion-proof water-stopping section is smaller than the outer diameter of the protruding edge, forming a structure that can be embedded in the water outlet connector during installation and use; or, the pushing part is a protruding edge protruding from the outside of the end of the water-stopping rod facing the water outlet end; or, the pushing part is the end face of the explosion-proof water-stopping section facing the water outlet end.

7. A novel explosion-proof stop valve as described in claim 6, characterized in that, The water-stopping movable rod and the outer shell are nested together by a structure that allows for guided movement but not circumferential rotation. The end of the water-stopping movable rod facing the water outlet is provided with a mating operation structure for mating tools to achieve a fixed connection.

8. A novel explosion-proof stop valve as described in claim 7, characterized in that, The fixed connection structure is disposed on the outer shell. The end of the outer shell facing the water outlet is the open sealing end, and the end of the outer shell facing the water inlet is the sealing end. The outer side of the outer shell includes an outer end section near the open sealing end, an inner end section near the sealing end, and a sealing section between the outer end section and the inner end section. The diameter of the outer end section is larger than the diameter of the inner end section and the sealing section. The inner end section and / or the outer end section are provided with locking external threads. The water-stop sealing structure includes a fixed sealing structure disposed on the sealing section.

9. A novel explosion-proof stop valve as described in claim 8, characterized in that, The fixed sealing structure is a sealing gasket with an O-shaped or square circumferential rotating cross section or a U-shaped circumferential rotating cross section fitted on the sealing section, and / or the push sealing structure is a U-shaped sealing gasket on the push part that can seal against the open sealing end of the outer shell and the water supply connection.

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