A safety valve body and a safety valve

Abstract

This invention provides a safety valve body and a safety valve, relating to the field of water supply pipeline safety technology. The safety valve body includes a valve shell, a piston cylinder, a piston body, a second magnetic element, and a third magnetic element. At least a portion of the piston cylinder is located within the valve shell, and the piston cylinder is connected to the valve shell. The piston cylinder has a water inlet. A first cavity is formed between at least a portion of the outer wall of the piston cylinder and at least a portion of the inner wall of the valve shell. A cavity channel is provided on the piston cylinder. The piston body includes a relatively fixed piston and a first magnetic element. The piston is slidably disposed within the piston cylinder, and one side of the piston corresponds to the water inlet. The second magnetic element is slidably disposed within the piston cylinder, and the third magnetic element is fixedly disposed within the piston cylinder. This design helps to alleviate the damage to pipeline components caused by water hammer in domestic water supply pipelines, ensures the normal operation of pipeline components, and extends the service life of the components.

Description

Technical Field

[0001] This invention relates to the field of water supply pipeline safety technology, and more specifically, to a safety valve body and a safety valve. Background Technology

[0002] During the water delivery process in household water supply pipelines, sudden changes in flow velocity can occur due to factors such as the sudden opening or closing of water supply pipeline components (such as valves, water heaters, water purifiers, or smart toilets), the sudden stopping of water pumps, or the abrupt opening and closing of guide vanes. This can lead to significant fluctuations in pressure. Due to the inertia of the pressurized water flow, the resulting water flow shock wave is like a hammer blow, a phenomenon known in the industry as the water hammer effect. This phenomenon can easily reduce the service life of pipes and pipeline components, and in severe cases, it can cause pipe bursts, damaging end-user water components and water appliances (such as water heaters and smart toilet purifiers).

[0003] Therefore, this application is hereby submitted. Summary of the Invention

[0004] One of the objectives of this invention is to provide a safety valve body that helps to solve the above-mentioned technical problems.

[0005] The second objective of this invention is to provide a safety valve including the aforementioned safety valve body.

[0006] This invention can be implemented as follows:

[0007] In a first aspect, the present invention provides a safety valve body, comprising a valve shell, a piston cylinder, a piston body, a second magnetic element, and a third magnetic element;

[0008] At least a portion of the piston cylinder is located inside the valve housing, the piston cylinder is connected to the valve housing, and the piston cylinder is provided with a water inlet; a first cavity is formed between at least a portion of the outer wall of the piston cylinder and at least a portion of the inner wall of the valve housing; a cavity channel is provided on the piston cylinder;

[0009] The piston body includes a relatively fixed piston and a first magnetic component. The piston is slidably disposed inside the piston cylinder, and one side of the piston corresponds to the water outlet.

[0010] The second magnetic component is slidably disposed inside the piston cylinder, and the third magnetic component is fixedly disposed in the piston cylinder;

[0011] The piston body, the second magnetic component, and the third magnetic component are distributed sequentially along the axis of the piston cylinder; the first magnetic component and the second magnetic component repel each other, and the second magnetic component and the third magnetic component repel each other; a second cavity is formed between the piston body and the second magnetic component; a third cavity is formed between the second magnetic component and the third magnetic component; and a cavity channel is used to connect the first cavity and the third cavity.

[0012] In an optional embodiment, the entire piston cylinder is located inside the valve housing, and the water outlet is formed by the open end of the piston cylinder, which is connected to the valve housing; both the valve housing and the piston cylinder are cylindrical structures, and the valve housing and the piston cylinder are coaxially arranged.

[0013] In an optional embodiment, the valve housing includes an outer shell and a sealing cap; the piston cylinder is located inside the outer shell, and the open end of the piston cylinder is connected to one end of the outer shell; the sealing cap is detachably disposed at the other end of the outer shell, and the piston cylinder and the sealing cap are spaced apart; the first cavity is formed by the inner wall of the outer shell, the inner wall of the sealing cap, and the outer wall of the piston cylinder.

[0014] In an optional embodiment, the valve housing further includes an inflation device for inflating the first cavity, the inflation device being disposed on the sealing cap.

[0015] In an optional embodiment, a connection port is provided at the end of the housing near the water outlet.

[0016] In an alternative embodiment, a mounting step is formed at the end of the piston cylinder away from the open end, and a third magnetic element is mounted within the mounting step.

[0017] In an optional embodiment, the piston body further includes at least one first sealing ring, and the outer wall of the piston is provided with at least one first annular groove. The at least one first sealing ring is correspondingly fitted into the at least one first annular groove, and the first sealing ring is used to seal with the piston cylinder.

[0018] In an optional embodiment, a groove is provided on the side of the piston facing away from the water outlet, and the first magnetic element is fixedly disposed in the groove.

[0019] In an optional embodiment, there are multiple cavity channels, and all cavity channels are evenly distributed around the piston cylinder in the form of multiple hole groups.

[0020] Secondly, the present invention provides a safety valve, including a valve device and a safety valve body according to any of the foregoing embodiments, wherein the valve shell of the safety valve body is mounted on the valve device, and the water outlet of the safety valve body is connected to the valve device.

[0021] The beneficial effects of this invention include:

[0022] The safety valve body provided by this invention has a reasonable structure design, is easy and convenient to install, and has a rigorous and mutually restrictive structure for each magnetic component. It is simple and easy to maintain and operate. It can protect water components from water hammer in household pipelines and protect pipeline components from damage in low-temperature environments, thus extending the service life of product components. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram showing the installation state of the safety valve provided in this embodiment;

[0025] Figure 2 This is an overall diagram of the safety valve provided in this embodiment;

[0026] Figure 3 This is an exploded view of the safety valve provided in this embodiment;

[0027] Figure 4 This is a cross-sectional view of the safety valve provided in this embodiment;

[0028] Figure 5 for Figure 4 A schematic diagram of the safety valve body from a first-view perspective is shown.

[0029] Figure 6 for Figure 4 The diagram shown is a second-view illustration of the safety valve body.

[0030] Icons: 1000 - Safety valve; 100 - Safety valve body; 101 - First cavity; 102 - Second cavity; 103 - Third cavity; 10 - Valve shell; 11 - Outer shell; 12 - Sealing cap; 13 - Inflating device; 14 - Connection port; 20 - Piston cylinder; 21 - Cavity channel; 22 - Mounting step; 23 - Water outlet; 30 - Piston body; 31 - Piston; 311 - First annular groove; 312 - Embedding groove; 32 - First magnetic component; 33 - First sealing ring; 40 - Second magnetic component; 50 - Third magnetic component; 60 - Inert gas; 200-Valve device; 210-Handle; 220-Valve core; 230-Outlet fitting; 240-Rotating body; 250-Angle valve body; 251-Second annular groove; 252-Third annular groove; 253-Fourth annular groove; 254-Second sealing ring; 255-Third sealing ring; 256-Fourth sealing ring; 260-Wall cover plate; 270-Connector; 2000-Wall; F0-Water pressure; F1-First strong magnetic repulsion force; F2-Second strong magnetic repulsion force; F3-Inert gas pressure. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0035] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0036] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0037] Example

[0038] Please refer to Figure 1 This embodiment provides a safety valve 1000, which can be installed on a wall 2000 or in other locations as needed.

[0039] Please refer to Figure 2 and Figure 3 The safety valve 1000 includes a valve assembly 200 and a safety valve body 100, with the safety valve body 100 mounted on the valve assembly 200. Specifically, the valve assembly 200 includes a handle 210, a valve core 220, an outlet fitting 230, a rotating body 240, an angle valve body 250, a wall cover 260, and a connector 270.

[0040] In this embodiment, the valve core 220 is mounted on the outlet fitting 230, and the handle 210 is fitted onto the outside of the valve core 220. One end of the angle valve body 250 passes through the rotating body 240 and is threaded onto the outlet fitting 230. The other end of the angle valve body 250 passes through the wall cover plate 260 and is threaded onto the wall 2000 (specifically, the angle valve body 250 is connected to the domestic water supply pipe inside the wall 2000). The wall cover plate 260 serves a certain fixing and sealing function. The safety valve body 100 is threaded onto one end of the connector 270, and the other end of the connector 270 is threaded onto the rotating body 240.

[0041] To improve the sealing effect, the angle valve body 250 is provided with a second annular groove 251, a third annular groove 252 and a fourth annular groove 253 in sequence. At the same time, a second sealing ring 254, a third sealing ring 255 and a fourth sealing ring 256 are fitted on the second annular groove 251, the third annular groove 252 and the fourth annular groove 253 respectively.

[0042] After installation, the second sealing ring 254 seals the inner wall of the water outlet fitting 230, and the third sealing ring 255 and the fourth sealing ring 256 seal the inner wall of the rotating body 240 at different positions at the front and back.

[0043] For reference, the second sealing ring 254, the third sealing ring 255 and the fourth sealing ring 256 mentioned above can all be O-rings.

[0044] In addition, the safety valve body 100 described above can also be applied to other water-using components.

[0045] In some preferred embodiments, the rotating body 240 can rotate 360°, which is beneficial for meeting different angle installations and improving installation adaptability.

[0046] Please refer to this as well. Figures 4 to 6 In this embodiment, the safety valve body 100 includes a valve shell 10, a piston cylinder 20, a piston body 30, a second magnetic element 40, and a third magnetic element 50.

[0047] At least a portion of the piston cylinder 20 is located inside the valve housing 10. The piston cylinder 20 is connected to the valve housing 10 and is provided with a water outlet 23. A first cavity 101 is formed between at least a portion of the outer wall of the piston cylinder 20 and at least a portion of the inner wall of the valve housing 10. A cavity channel 21 is provided on the piston cylinder 20.

[0048] The piston body 30 includes a relatively fixed piston 31 and a first magnetic element 32. The piston 31 is slidably disposed within the piston cylinder 20, and one side of the piston 31 corresponds to the water outlet 23. The second magnetic element 40 is slidably disposed within the piston cylinder 20, and the third magnetic element 50 is fixedly disposed within the piston cylinder 20.

[0049] The piston body 30, the second magnetic element 40, and the third magnetic element 50 are sequentially distributed along the axis of the piston cylinder 20; the first magnetic element 32 and the second magnetic element 40 repel each other, and the second magnetic element 40 and the third magnetic element 50 repel each other; a second cavity 102 is formed between the piston body 30 and the second magnetic element 40; a third cavity 103 is formed between the second magnetic element 40 and the third magnetic element 50; and the cavity channel 21 is used to connect the first cavity 101 and the third cavity 103.

[0050] Continuing from the above, the valve shell 10 of the safety valve body 100 is mounted on the valve device 200. Specifically, the valve shell 10 is mounted on the connector 270 of the valve device 200. Simultaneously, the water outlet 23 of the safety valve body 100 is connected to the valve device 200 (specifically, the water outlet 23 is connected to the connector 270). In the installed state, external water enters from the angle valve body 250, passes through the valve core 220, and exits from the outlet fitting 230. After the water enters, it passes through the rotating body 240 and simultaneously enters the safety valve 1000 through the connector 270, acting on the piston 31 through the water outlet 23. In other words, when water hammer occurs, the water pressure directly impacts the piston 31.

[0051] In this embodiment, the gas filling the cavity is an inert gas 60 (e.g., Figures 4 to 6 (As shown by the dashed circle in the middle) to improve stability.

[0052] Figure 4 In this context, water pressure F0 represents the water pressure inside the pipe, that is, the pressure impacting the piston 31.

[0053] The first strong magnetic repulsion force F1 represents the force that repels the first magnetic component 32 and the second magnetic component 40.

[0054] The second strong magnetic repulsion force F2 represents the force that repels the second magnetic component 40 and the third magnetic component 50.

[0055] The inert gas pressure F3 represents the pressure of the inert gas 60 in the cavity.

[0056] In the first scenario, the water pressure F0 is relatively low. At this time, the piston body 30 remains at the top position of the piston cylinder 20, and the first magnetic component 32 and the second magnetic component 40 maintain their current positions. That is, the piston 31 is in force balance. The forces acting on the piston 31 at this time include the water pressure F0 in the pipe, the first strong magnetic repulsion force F1, the second strong magnetic repulsion force F2, the inert gas pressure F3, the force exerted by the piston cylinder 20 against the piston 31 at the top position, and its own weight.

[0057] In the second scenario, when the water pressure F0 is high, the safety valve 1000 operates, and the piston body 30 moves towards the second magnetic component 40, which remains in its original position. This means the second cavity 102 is compressed. Because a seal is always formed between the piston body 30 and the piston cylinder 20, water from the pipeline cannot enter the cavities, preventing water leakage. When the water pressure F0 decreases, the piston body 30 returns to its original position.

[0058] In the third scenario, the water pressure F0 is exceptionally high. When the shock wave enters the safety valve 1000, it first acts on the piston 31, causing it to move towards the second magnetic component 40. At this point, the second cavity 102 is compressed. Simultaneously, due to the extremely high pressure, the second magnetic component 40 is driven towards the third magnetic component 50, compressing the third cavity 103. The inert gas 60 within the third annular cavity is rapidly compressed through the cavity channel 21 into the first cavity 101, providing a buffer against the strong magnetic repulsion force within the second cavity 102, preventing magnetic failure. Furthermore, the instantaneous impact pressure is released within all three cavities. After the water pressure F0 decreases, both the piston 30 and the second magnetic component 40 return to their original positions.

[0059] The above settings can effectively solve the problem of water hammer damage to pipe components in domestic water supply systems, ensure the normal operation of pipe components, and extend the service life of components.

[0060] In this embodiment, the entire piston cylinder 20 is located inside the valve housing 10, and the water outlet 23 is formed from the open end of the piston cylinder 20. The open end of the piston cylinder 20 is connected to the valve housing 10. Both the valve housing 10 and the piston cylinder 20 are cylindrical structures, and the valve housing 10 and the piston cylinder 20 are coaxially arranged.

[0061] With this structural design, the overall structure is similar to a ring-shaped dual-cavity buffer structure, namely, the chamber between the valve housing 10 and the piston cylinder 20, and the chamber inside the piston cylinder 20. The buffer may include magnetic repulsion buffering between the first magnetic element 32, the second magnetic element 40, and the third magnetic element 50, and also includes buffering with inert gas 60 within the first cavity 101 and the third cavity 103.

[0062] In addition, springs can be added in other embodiments to achieve buffering. Through reasonable design, different buffers can withstand different pressures. For example, by designing the magnetic strength or using an inert gas pressure of 60 atmospheres, the safety and damage prevention requirements of different water pressure shock waves can be met, and the needs of different household water supply pipelines under different environmental conditions can be maximized.

[0063] For example, by designing the magnetic strength of the first magnetic element 32, the second magnetic element 40, and the third magnetic element 50, and by designing the air pressure within the first cavity 101, the second cavity 102, and the third cavity 103, different actions can be achieved after being subjected to the water hammer effect. Furthermore, the second magnetic element 40 can maintain a constant internal regulation. Understandably, under a constant overall magnetic force, the second magnetic element 40 is in a constant state. The second magnetic element 40 provides bidirectional repulsive force between the first magnetic element 32 and the third magnetic element 50, and also provides a buffering effect with the inert gas 60.

[0064] Combination Figure 5 and Figure 6 In this embodiment, the valve housing 10 includes an outer shell 11 and a sealing cap 12; the piston cylinder 20 is located inside the outer shell 11, and the open end of the piston cylinder 20 is connected to one end of the outer shell 11; the sealing cap 12 is detachably disposed at the other end of the outer shell 11, and the piston cylinder 20 and the sealing cap 12 are spaced apart; the first cavity 101 is formed by the inner wall of the outer shell 11, the inner wall of the sealing cap 12 and the outer wall of the piston cylinder 20.

[0065] Furthermore, the valve housing 10 also includes an inflation device 13 for inflating the first cavity 101, the inflation device 13 being disposed on the sealing cap 12. This product adopts an inflatable design, enabling leak detection and gas filling, filling a gap in the market for this type of product and better serving consumers.

[0066] For reference, during inflation, the inflation device is inserted into the inflation unit 13, and the pin of the inflation device opens to fill with inert gas 60. The inflation amount is measured by the pressure gauge on the inflation device. After inflation is complete, the inflation device is removed, and the inflation unit 13 automatically seals to prevent gas leakage. When maintenance and gas replenishment are required, the same inflation steps are repeated. Simultaneously, the inflation unit 13 can also perform maintenance and gas replenishment, pressure testing, and gas regulation. Furthermore, it avoids unnecessary trouble caused by the need to replace the safety valve 1000 during adjustment, testing, and maintenance.

[0067] It should be noted that inert gas 60 generally needs to be added to the inflation device 13 within a certain period. This can effectively solve the pain points of using this type of product, better solve the water hammer effect in daily life, reduce water loss caused by water hammer, and provide protection for the safety of household water supply pipes. By controlling the amount of inert gas 60 injected, the sliding flexibility of the piston 31 and the pressure regulation function can be effectively realized.

[0068] Combination Figure 5 and Figure 6 In this embodiment, a connection port 14 is provided at one end of the outer shell 11 near the water outlet 23 to facilitate the installation of the safety valve body 100 onto the connector 270.

[0069] The connection port 14 can be an internally threaded structure. In addition, in other embodiments, when the connector 270 is an internally threaded structure, the connection port 14 can also be an externally threaded structure.

[0070] Combination Figure 5 and Figure 6 In this embodiment, a mounting step 22 is formed at the end of the piston cylinder 20 away from the opening to facilitate the mounting of the third magnetic component 50. The third magnetic component 50 is mounted within the mounting step 22. That is, the third magnetic component 50 is fixed to the end of the piston cylinder 20.

[0071] Combination Figure 5 and Figure 6 In this embodiment, the piston body 30 further includes at least one first sealing ring 33 to improve the sealing effect. The outer wall of the piston 31 is provided with at least one first annular groove 311, and at least one first sealing ring 33 is correspondingly fitted into at least one first annular groove 311. The first sealing ring 33 is used to seal with the piston cylinder 20.

[0072] Specifically, there are two first sealing rings 33 and two first annular grooves 311. Preferably, the first sealing ring 33 is an O-ring.

[0073] By setting the first sealing ring 33, not only can water be prevented from entering the piston cylinder 20 and causing water accumulation in the cavity, thus affecting the buffering effect, but the inert gas 60 inside the piston cylinder 20 can also be prevented from entering the pipeline. At the same time, the first sealing ring 33 can also play a role in friction buffering when the piston 31 moves.

[0074] For reference, the first sealing ring 33 can be made of a soft material to provide better compression and cushioning, and can also protect the piston 31 during its movement from impact damage, while reducing operating noise.

[0075] Combination Figure 5 and Figure 6 In this embodiment, a groove 312 is provided on the side of the piston 31 facing away from the water outlet 23 to facilitate the installation of the first magnetic component 32. The first magnetic component 32 is fixedly disposed in the groove 312.

[0076] In this embodiment, there are multiple cavity channels 21, which allows for better ventilation. All cavity channels 21 are evenly distributed around the piston cylinder 20 in the form of multiple hole groups.

[0077] For reference, the number of hole groups can be four, and each hole group can contain seven cavity channels 21.

[0078] As described above, the working principle of the safety valve 1000 provided in this embodiment includes:

[0079] Generally, the pre-pressurization pressure of piston body 30 is defined according to the maximum pressure that the household water pipe can provide. For example, the maximum pressure of secondary water supply in domestic cities is generally below 0.8MPa, so the pre-pressurization pressure F can be set to ≥0.8MPa.

[0080] When the water pressure F0 in the pipeline is less than the pre-set pressure F, for example, when F0 is 0.7 MPa, the safety valve 1000 will not operate, that is, it will be in a state of... Figures 4 to 6 In the state shown, the piston body 30 is held at the top position of the piston cylinder 20, and the first magnetic component 32 and the second magnetic component 40 maintain their current positions. That is, the piston 31 is in force balance, including the water pressure F0 in the pipe, the first strong magnetic repulsion force F1, the second strong magnetic repulsion force F2, the inert gas pressure F3, the force of the piston 31 being held back by the piston cylinder 20 when it is at the top position, and its own weight.

[0081] When the water pressure F0 in the pipeline is greater than the pre-set pressure F, for example, when F0 is 0.9 MPa, the safety valve 1000 operates, and the piston body 30 moves toward the second magnetic component 40, which remains in its original position. This means the second cavity 102 is compressed. Because a seal is always formed between the piston body 30 and the piston cylinder 20, water from the pipeline cannot enter the cavities, preventing water leakage. When the water pressure F0 decreases, for example, to below the pre-set pressure F, the piston body 30 returns to its original position.

[0082] When the water pressure in the pipe increases instantaneously (water hammer effect), such as the water hammer effect caused by rapidly closing a faucet valve, for example, when the water pressure F0 is 1.6 MPa, the shock wave enters the safety valve 1000 and first acts on the piston 31, causing the piston 31 to move towards the second magnetic component 40. At this time, the second cavity 102 is compressed. Simultaneously, due to the extremely high pressure, the second magnetic component 40 is driven by the pressure to move towards the third magnetic component 50, at which point the third cavity 103 is compressed. The inert gas 60 in the third annular cavity is rapidly compressed into the first cavity 101 through the cavity channel 21, providing a buffer for the strong magnetic repulsion force in the second cavity 102, preventing the magnetic force from failing, and the instantaneous impact pressure is released in all three cavities. After the water pressure F0 decreases, for example, to less than the pre-set pressure F, the piston 30 and the second magnetic component 40 both return to their original positions.

[0083] Once the piston body 30 returns to its original position, it rests against the top end of the piston cylinder 20. Since this top end extends inward, it forms a sealing contact with the piston body 30, effectively creating a seal. Generally, the top surface of the piston body 30 is designed with a soft material, providing compression and cushioning. After the piston body 30 returns to its original position, it receives better protection, reducing impact damage and noise.

[0084] The aforementioned second cavity 102 serves to support the piston body 30 and, after compression and a decrease in water pressure F0, assists in the rapid reset of the piston body 30 under the influence of the first strong magnetic repulsion force F1 and the air pressure within the second cavity 102. Similarly, the presence of the aforementioned third cavity 103, after compression and a decrease in water pressure F0, facilitates the rapid reset of the second magnetic component 40 under the influence of the inert gas pressure F3 and the second strong magnetic repulsion force F2.

[0085] Meanwhile, since the third cavity 103 and the first cavity 101 are connected through the cavity channel 21, the third cavity 103 can also be compressed and regulated by the inert gas 60 in the first cavity 101. Furthermore, during the inflation process of the inflation device 13, the inert gas 60 injected into the first cavity 101 can enter the third cavity 103 through the cavity channel 21.

[0086] Generally, the stronger the water hammer effect, the more severe the compression of the second cavity 102 and the third cavity 103. In some cases, the maximum value of the preload force of the piston 31 can be designed to be less than the minimum value of the preload force of the second magnetic component 40. This ensures that when the water pressure F0 is high, the second magnetic component 40 does not move, or only moves a very small distance. When the water pressure F0 is particularly high, the piston 31 moves first, and after moving a certain distance, the second magnetic component 40 moves, thereby compressing the space of the third cavity 103. This provides a linear buffering and release effect under high pressure, ensuring that the safety valve 1000 is not damaged under high pressure, thus providing dual safety protection. During this impact process, the piston 31 moves under magnetic force and inert gas 60 pressure. The second magnetic component 40 is under the magnetic force of the first magnetic component 32, and also under the pressure of the inert gas 60 in the third cavity 103. The inert gas 60 in the third cavity 103 enters the first cavity 101 through the cavity channel 21 for further buffering. Therefore, through multiple buffering operations, the impact and damage of high pressure on pipelines and safety valve 1000 can be effectively mitigated, providing multiple protections. When safety valve 1000 is in operation, this buffering can eliminate or reduce the noise generated by the internal drive components during operation.

[0087] That is, the safety valve 1000 provided in this embodiment has at least the following advantages:

[0088] The combination of magnetic and gas buffers provides dual safety protection, offering greater reliability. It protects water-using components in household plumbing from water hammer and safeguards them from damage in low-temperature environments. Therefore, it better protects product components, effectively extending their lifespan and contributing significantly to energy conservation and environmental protection.

[0089] When the valve body operates, water pressure F0 impacts piston 31, and the axial movement of piston 31 impacts the second magnetic component 40. The second magnetic component 40 impacts the third magnetic component 50 and also impacts the inert gas 60 in the third cavity 103. The inert gas 60 enters the third cavity 103 through the cavity channel 21. Upon reset, it sequentially reverses the impact to reset. When the pipeline pressure returns to the pressure before the impact wave, piston 31 returns to its initial state under the action of the various magnetic components and the inert gas 60. The overall impact is orderly and provides a good buffering effect.

[0090] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A poppet of a safety valve, characterized in that The valve body comprises a valve shell, a piston cylinder, a piston body, a second magnetic member and a third magnetic member; At least part of the piston cylinder is located in the valve shell, the piston cylinder is connected with the valve shell, the piston cylinder is provided with a water flow port, a first cavity is formed between at least part of the outer wall of the piston cylinder and at least part of the inner wall of the valve shell, and a cavity passage is arranged on the piston cylinder; The piston body comprises a relatively fixed piston and a first magnetic member, the piston is slidably arranged in the piston cylinder, and one side of the piston corresponds to the water flow port; The second magnetic member is slidably arranged in the piston cylinder, and the third magnetic member is fixedly arranged in the piston cylinder; The piston body, the second magnetic member and the third magnetic member are sequentially distributed along the axis of the piston cylinder, the first magnetic member repels the second magnetic member, the second magnetic member repels the third magnetic member, a second cavity is formed between the piston body and the second magnetic member, a third cavity is formed between the second magnetic member and the third magnetic member, and the cavity passage is used to connect the first cavity and the third cavity; All of the piston cylinder is located in the valve shell, the water flow port is formed by the opening end of the piston cylinder, the opening end of the piston cylinder is connected with the valve shell, the valve shell and the piston cylinder are both cylindrical structures, and the valve shell and the piston cylinder are coaxially arranged; The valve shell comprises a shell, a sealing cover and an inflation device for inflating the first cavity, the piston cylinder is located in the shell, the opening end of the piston cylinder is connected with one end of the shell, the sealing cover is detachably arranged at the other end of the shell, the piston cylinder is arranged in a spaced manner with the sealing cover, the first cavity is formed by the inner wall of the shell, the inner wall of the sealing cover and the outer wall of the piston cylinder, and the inflation device is arranged on the sealing cover; The end of the shell close to the water flow port is provided with a connecting port.

2. The safety valve body of claim 1, wherein The end of the piston cylinder away from the opening end is formed with a mounting step, and the third magnetic member is mounted in the mounting step.

3. The safety valve body of claim 1 or 2, wherein, The piston body further comprises at least one first sealing ring, the outer wall of the piston is provided with at least one first annular groove, and the at least one first sealing ring is correspondingly assembled into the at least one first annular groove, so as to be in sealing cooperation with the piston cylinder.

4. The safety valve body of claim 1 or 2, wherein, The side of the piston away from the water flow port is provided with an embedding groove, and the first magnetic member is fixedly arranged in the embedding groove.

5. The safety valve body of claim 1 or 2, wherein, The number of the cavity passages is multiple, and all of the cavity passages are uniformly distributed in the form of multiple hole groups around the circumference of the piston cylinder.

6. A relief valve characterized by The safety valve body of any one of claims 1-5 is mounted on the valve device, and the water flow port of the safety valve body is in communication with the valve device.

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