Pipeline blockage emergency cutting device with magnetic attraction and reset

Abstract

The utility model relates to a kind of magnetic attraction reset type pipeline blockage emergency cutting device, including valve body and outlet water pipeline, the other end of valve body is connected to external inlet water pipeline, valve body includes inner valve body and outer valve body, the side of outer valve body is integrally connected to the side wall of inner valve body, the connection area between outer valve body and inner valve body is equipped with first waterway passage, the other side of outer valve body is equipped with clamping shell, the inside of inner valve body is equipped with valve core assembly, the outside of inner valve body is equipped with water storage tank, located in the inside of water storage tank is equipped with film support, first magnet element is equipped on film support, the inner wall of outlet water pipeline and the side wall of valve outlet water passage have counterflow passage, the inside of water storage tank is equipped with water tank flow channel;The utility model realizes the mechanical type emergency device without power, can automatically fast cut off blocked pipeline and can manually reset, prevent pipeline from breaking due to excessive pressure.

Description

Technical Field

[0001] This utility model relates to the field of water inlet pipe technology, specifically to a magnetically repositionable emergency shut-off device for pipe blockage. Background Technology

[0002] The washing machine's inlet hose is a crucial component connecting the washing machine to the water source, primarily used to deliver washing water. Common inlet hose materials include plastic and rubber. Plastic hoses are lightweight and economical but prone to breakage, while rubber hoses are flexible and durable but more expensive. During installation, ensure the sealing ring fits tightly and the threads are tightened appropriately. After installation, test for leaks by running water through the hose. Standard inlet hose diameters are available in 4-point and 6-point sizes, with 6-point hoses being more common in front-loading washing machines. Avoid bending or squeezing the hose during daily use, and regularly check the connections to extend its lifespan. The authorization announcement number CN222122522U discloses a washing machine pipe. According to its instruction manual and drawings, the solution uses welding to fix the 6-point connecting flange and the 4-point connecting flange, which can improve the structural strength of the connection between the 6-point connecting flange and the 4-point connecting flange and the corrugated metal pipe and the connecting bend, and prevent the connection from breaking.

[0003] However, the solution has certain limitations: 1. When the pressure increases suddenly due to pipeline blockage, there is no corresponding structure to control the water circuit in the pipeline to automatically shut off, which may lead to pipeline rupture or interface leakage due to excessive pressure; 2. Even if control is achieved through mechanical valves, the corresponding delay is too low; 3. How to achieve rapid on / off control of the water circuit without relying on solenoid valves while ensuring low production costs is also a problem that needs to be considered. Summary of the Invention

[0004] This invention addresses the aforementioned technical problems existing within the water inlet pipe assembly by proposing a magnetically resetting type pipe blockage emergency shut-off device. This device is a mechanical emergency device that requires no electricity, can automatically and quickly shut off blocked pipes, and can be manually reset, preventing pipes from rupturing due to excessive pressure.

[0005] The objective of this invention is achieved through the following technical solution: a magnetically resetting type emergency shut-off device for pipe blockage, comprising a valve body, a detachable water outlet pipe connected to one end of the valve body, and a water inlet pipe connected to the other end of the valve body. The valve body includes an inner valve body and an outer valve body. One side of the outer valve body is integrally connected to the side wall of the inner valve body. The connection area between the outer valve body and the inner valve body is provided with a first water passage for guiding water from the inside of the inner valve body to the inside of the outer valve body. The other side of the outer valve body is provided with a snap-fit ​​housing for snapping onto the water outlet pipe. The diameter of the water outlet channel of the outer valve body is smaller than the inner diameter of the water outlet pipe. The inner valve body contains a sliding and magnetic valve core assembly. The positional change can block or open the end face of the first water passage. The outer side of the inner valve body is provided with a water storage tank, and the inside of the water storage tank is provided with a membrane support. The membrane support is provided with a first magnet element coaxial with the valve core assembly. There is a counterflow channel between the inner wall of the water outlet pipe and the side wall of the water outlet channel of the valve body. The inside of the water storage tank is provided with a water tank flow channel connected to the counterflow channel. The counterflow channel is used to guide the water flowing backward in the water outlet pipe through the inside of the water tank flow channel to the inside of the water storage tank. When the membrane support is in a set shape, the first magnet element can attract the valve core assembly to release the blockage of the end face of the first water passage. The water pressure change inside the water storage tank below the membrane support can squeeze the membrane support to deform.

[0006] Preferably, the inner valve body extends outward from the side near the water inlet pipe and has a water inlet connection channel. A filter screen is snapped into the inner side of the end of the water inlet connection channel and a threaded housing is threaded into the outer side of the end of the water inlet connection channel. The external water inlet pipe is threaded into the threaded housing. A check valve is also provided inside the water inlet connection channel.

[0007] Preferably, the inner valve body includes a valve body base and a valve body end cap threaded onto the valve body base. The valve body end cap has a columnar groove coaxial with the first water passage inside the valve body base. The valve core assembly is slidably connected to the inside of the columnar groove. The inner wall of the columnar groove has several inner grooves for balancing the water pressure between the top area of ​​the columnar groove and the inner area of ​​the valve body base. The water storage tank is disposed on the surface of the valve body end cap. A first spring is provided between the valve core assembly and the top of the columnar groove.

[0008] Preferably, the surface of the valve body end cover is also provided with a valve body top cover, and the connection position between the valve body end cover and the valve body top cover can press the edge of the film support member. The film support member is a plastic part that is in the shape of a cover. A second spring is also provided between the surface of the film support member and the top of the valve body top cover, and the first magnetic element is provided in the middle of the film support member.

[0009] Preferably, the valve core assembly includes a first valve core support, a silicone sealing block, and a second magnetic element. The first valve core support has an annular support plate on its side wall, the annular support plate has a second magnetic element on its surface, the bottom of the annular support plate has a silicone sealing block, the first spring is disposed between the surface of the annular support plate and the top of the columnar groove, and there is a gap between the side wall of the annular support plate and the inner wall of the columnar groove.

[0010] Preferably, the surface of the valve body end cap is also provided with a pressure relief through hole that communicates with the counterflow channel, and the surface of the pressure relief through hole is provided with a breathable membrane.

[0011] Preferably, a clamp is provided between the inner wall of the snap-fit ​​housing and the outer wall of the water outlet pipe. The clamp is located at the connection part between the snap-fit ​​housing and the water outlet pipe. The clamp clamps one end of the water outlet pipe to the side wall of the water outlet channel of the valve body. The snap-fit ​​part between the clamp and the snap-fit ​​housing is also provided with a buckle. The surface of the snap-fit ​​housing is provided with a groove adapted to the buckle.

[0012] Preferably, the valve body base is provided with a sliding through hole at the bottom of the first water channel. A reset support is slidably provided inside the sliding through hole. The two ends of the reset support are located at the outside of the first water channel and the inner valve body, respectively. A third spring is provided between one end of the reset support and the outside of the inner valve body. When the reset support is pressed, it can lift the valve core assembly to release the blockage of the first water channel.

[0013] Preferably, the reset support is cylindrical in shape and has a first spring limiting groove at one end near the outside of the valve body base. The valve body base has a second spring limiting groove coaxial with the first spring limiting groove on its outside. The third spring is disposed between the first spring limiting groove and the second spring limiting groove.

[0014] The valve body base has a second water channel on the side wall facing the reset support. The reset support has a pressure relief channel that communicates with the first water channel. The first water channel and the second water channel are only connected when the third spring is under pressure. The sliding through hole has a first sealing ring inside. The side wall of the reset support has a second sealing ring and a limiting plate in the area of ​​the first water channel. The limiting plate is located above the second sealing ring and the diameter of the limiting plate is larger than the diameter of the sliding through hole.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a counterflow channel, a water tank, and a water storage tank within the valve body, when the outlet pipe is blocked, the high-pressure water flow will flow back to the water storage tank, pushing the diaphragm support to deform. The deformation of the diaphragm support causes the first magnetic element to move upward, releasing the magnetic attraction on the valve core assembly. Under the action of the first spring, the valve core quickly moves downward, blocking the first water passage and achieving automatic water cut-off. First, the entire process requires no external energy or control signal: it is achieved entirely by water pressure changes, without relying on electricity or external control, and is suitable for various environments (such as the inlet pipe of a household washing machine, industrial pipelines, etc.). Second, this dual-action mechanism of magnetic attraction + spring ensures that the valve core assembly remains open under normal conditions and closes quickly under abnormal conditions, avoiding the risk of pipe rupture and leakage. 2. This solution employs a magnetic adsorption combined with spring release mechanism, enabling the valve core assembly to complete its action within milliseconds, far faster than traditional purely mechanical valves. The direct connection between the counterflow channel and the water storage tank shortens the pressure transmission path and accelerates the response. By setting an inner groove within the columnar slide, the water pressure on both sides of the valve core assembly is balanced, preventing pressure differences from hindering the valve core's movement and further improving the response speed. The valve core assembly is directly driven by the disappearance of the magnetic force and the spring, eliminating intermediate links such as gears and connecting rods, resulting in direct action and extremely low delay. 3. The ingenious design of the reset support breaks the water pressure self-locking state of the first water passage equal to that of the valve core assembly: when the user presses the reset support, its internal pressure relief channel aligns and connects with the second water passage on the valve body base, allowing the high-pressure water inside the valve body base to be released through this new path, instantly balancing the water pressure on both sides of the valve core assembly; after the water pressure self-locking effect disappears, the top of the reset support continues to rise, mechanically lifting the valve core assembly and disengaging it from the valve seat. At the same time, the magnetic force of the first magnetic element easily attracts the valve core back to the open position; this design is a non-disassembly, reusable, fast, and reliable reset method; users do not need tools, and only need to press once to restore water supply after clearing the blockage, greatly improving the user experience and the practicality of the device; 4. The stroke of the reset support is carefully designed: during its initial pressing phase, the pressure relief channel first connects with the second water channel to release pressure, and then mechanically contacts and lifts the valve core. This process is smooth and orderly, avoiding the violent impact and wear caused by forcibly opening the valve core under high pressure. At the same time, the elasticity of the third spring ensures that the reset support can stably return to its original position when not pressed, without accidental triggering. This design ensures the smoothness and reliability of the reset operation, effectively extending the service life of the seals and the entire pipeline assembly. Attached Figure Description

[0016] Figure 1 This is a perspective view of the first embodiment of the present utility model; Figure 2 This is an exploded view of the first embodiment of the present invention; Figure 3 This is a partial cross-sectional view of the first embodiment of the present invention; Figure 4 For the present utility model in Figure 3 Enlarged view of region A in the image; Figure 5 This is a perspective view of the valve body base according to the first embodiment of this utility model; Figure 6 This is a cross-sectional view of the valve body base according to the first embodiment of this utility model; Figure 7 This is a perspective view of the second embodiment of the present utility model; Figure 8 This is an exploded view of the second embodiment of the present invention; Figure 9 This is a partial cross-sectional view of the second embodiment of the present invention; Figure 10 For the present utility model in Figure 8 Enlarged view of region B in the image; Figure 11 This is a partial cross-sectional view of the resetting support area of ​​this utility model.

[0017] The diagram shows: 1. Valve body; 11. Inner valve body; 12. Outer valve body; 13. Reverse flow channel; 10. First water passage; 111. Water storage tank; 112. Water tank flow channel; 113. Water inlet connection channel; 114. Valve body base; 115. Valve body end cap; 116. Columnar slide groove; 117. Valve body top cap; 118. Pressure relief through hole; 119. Sliding through hole; 110. Inner groove; 1141. Second spring limiting groove; 1142. Second water passage; 1191. First sealing ring; 21. Snap-fit ​​housing; 122. Valve body water outlet channel; 2. Water outlet pipe; 3. Valve core assembly; 30. First spring; 31. Valve core bracket; 32. Silicone sealing block; 33. Second magnetic element; 311. Annular support plate; 4. Membrane support; 41. First magnetic element; 5. Filter screen; 6. Threaded housing; 7. Clamp; 71. Buckle; 8. Reset support; 81. First spring limiting groove; 82. Pressure relief channel; 83. Second sealing ring; 84. Limiting plate; 9. Third spring. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figure 1 and Figure 2As shown in the first embodiment of this utility model, a magnetically resetting type emergency shut-off device for pipe blockage includes a valve body 1 and a detachable water outlet pipe 2 connected to one end of the valve body 1. The water outlet pipe 2 is a corrugated pipe. The valve body 1 includes an inner valve body 11 and an outer valve body 12. The other side of the outer valve body 12 is provided with a snap-fit ​​housing 121 for snapping the water outlet pipe 2. The diameter of the valve body water outlet channel 122 of the outer valve body 12 is smaller than the inner diameter of the water outlet pipe 2.

[0019] Specifically, a clamp 7 is provided between the inner wall of the snap-fit ​​housing 121 and the outer wall of the water outlet pipe 2. The clamp 7 is located at the connection part between the snap-fit ​​housing 121 and the water outlet pipe 2. The clamp 7 clamps one end of the water outlet pipe 2 to the side wall of the valve body water outlet channel 122. The snap-fit ​​part between the clamp 7 and the snap-fit ​​housing 121 is also provided with a buckle 71. The surface of the snap-fit ​​housing 121 is provided with a groove adapted to the buckle 71.

[0020] The inner wall of the clamp 7 is provided with several raised stripes. The width of the stripes and the spacing between the stripes are consistent with the pattern of the outer periphery of the water outlet pipe 2, so that the raised stripes can be embedded in the pattern, avoiding relative displacement between the sealing ring of the side wall of the valve body water outlet channel 122 and the inner wall of the end of the water outlet pipe 2, and also improving the sealing performance. During implementation, the clamp 7 is first placed on the outside of the water outlet pipe 2, and then the water outlet pipe 2 is inserted between the snap-fit ​​housing 121 and the outer valve body 12, so that the buckle 71 on the clamp 7 is connected to the slot on the surface of the snap-fit ​​housing 121, thereby achieving the connection and sealing between the water outlet pipe 2 and the side wall of the valve body water outlet channel 122.

[0021] Please refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 The other end of the valve body 1 is connected to an external water inlet pipe. Specifically, the inner valve body 11 extends outward from the side near the water inlet pipe and is provided with a water inlet connection channel 113. A filter screen 5 is snapped into the inner side of the end of the water inlet connection channel 113 and a threaded housing 6 is threadedly connected to the outer side of the end of the water inlet connection channel 113. The external water inlet pipe is threadedly connected to the threaded housing 6. A check valve is also provided inside the water inlet connection channel 113.

[0022] The end of the threaded housing 6 is provided with a four-point or six-point internal thread groove, and the external water inlet pipe is threaded to the internal thread groove. The water connection channel 113 is provided with several rectangular sliding grooves, so that the protrusions on the side wall of the filter screen 5 can be stuck in the rectangular sliding grooves. At the same time, a check valve is also installed inside the water inlet connection channel 113. The purpose of the check valve is mainly to prevent the water inside the inner valve body 11 from flowing back. The filter screen 5 is used to filter impurities inside the water connection channel 113 to prevent impurities from entering the washing machine.

[0023] Please continue to refer to this. Figure 3 and Figure 4 One side of the outer valve body 12 is integrally connected to the side wall of the inner valve body 11. The connection area between the outer valve body 12 and the inner valve body 11 is provided with a first water passage 10 that guides the water inside the inner valve body 11 to the water outlet passage 122 inside the valve body. The inner valve body 11 includes a valve body base 114 and a valve body end cap 115 that is threaded onto the valve body base 114. This two-section design of the inner valve body 11 is to facilitate the inspection of the blockage or wear inside the valve body base 114 or the valve body end cap 115 during subsequent maintenance.

[0024] In the first embodiment, the inner valve body 11 is provided with a sliding and magnetic valve core assembly 3. The position change of the valve core assembly 3 can block or open the end face of the first water passage 10. Specifically, the valve body end cap 115 is provided with a columnar slide groove 116 coaxial with the first water passage 10 inside the valve body base 114. The valve core assembly 3 is slidably connected to the inside of the columnar slide groove 116. It should be noted that the inner wall of the columnar slide 116 is provided with several inner grooves 110 for balancing the water pressure between the top area of ​​the columnar slide 116 and the inner area of ​​the valve body base 114; the water storage tank 111 is provided on the surface of the valve body end cover 115, and a first spring 30 is provided between the valve core assembly 3 and the top of the columnar slide 116.

[0025] The inner groove 110 is designed to balance the water pressure inside the valve body base 114 and the columnar groove 116 when the valve core assembly 3 is in any position inside the columnar groove 116. Without the inner groove 110, the sliding of the valve core assembly 3 inside the columnar groove 116 would be affected by the water pressure. When the first magnet element 41 moves upward to reduce the magnetic attraction on the valve core assembly 3, the first spring 30 can smoothly push the valve core assembly 3 to block the end of the first water passage 10.

[0026] The inner valve body 11 is provided with a water storage tank 111 on the outside, and a membrane support 4 is provided inside the water storage tank 111. The membrane support 4 is provided with a first magnet element 41 coaxial with the valve core assembly 3. There is a counterflow channel 13 between the inner wall of the water outlet pipe 2 and the side wall of the water outlet channel 122 of the valve body. The water storage tank 111 is provided with a water tank flow channel 112 connected to the counterflow channel 13. During implementation, whenever the inside or end of the water outlet pipe 2 is blocked, the water pressure increases continuously, causing the water inside the water outlet pipe 2 to gradually flow into the counterflow channel 13. At this time, the counterflow channel 13 is mainly used to guide the water flowing backward from the water outlet pipe 2 through the water tank channel 112 into the water storage tank 111. At this time, as the water inside the water storage tank 111 located below the membrane support 4 increases continuously, the water pressure inside the water storage tank 111 gradually increases, and the water pressure can squeeze the membrane support 4 to deform upward. Furthermore, when the membrane support 4 is in the set shape (i.e., when the membrane support 4 is not compressed), the first magnetic element 41 can attract the valve core assembly 3, so that the valve core assembly 3 will not block the end face of the first water passage 10. Therefore, when the water pressure can squeeze the membrane support 4 to deform upward, the magnetic force of the first magnetic element 41 releases the attraction of the valve core assembly 3. The valve core assembly 3 slides downward under the elastic force of the first spring 30 until it blocks the top of the first water passage 10. At this time, the water passage is automatically closed when the inside of the water outlet pipe 2 is blocked. The water outlet pipe 2 will not be continuously subjected to water pressure, and the water outlet pipe 2 is unlikely to burst. Moreover, this process does not require electricity and is executed very quickly.

[0027] It should be noted that valve core assembly 3 has two states: The first type: When it is at the top of the columnar chute 116, it will not block the end of the first water passage 10. In this state, it indicates that the water pressure inside the water outlet pipe 2 is in a normal state. The second type: When the valve core assembly 3 is at the bottom of the columnar slide groove 116, it can block the top of the first water passage 10. In this state, it indicates that the water outlet pipe 2 is blocked, which increases the water pressure inside the water outlet pipe 2. The water that is filled inside the water outlet pipe 2 flows into the water storage tank 111 through the counterflow channel 13 and the water tank flow channel 112 in sequence, changing the water pressure inside the water storage tank 111.

[0028] The valve body end cap 115 is also provided with a pressure relief through hole 118 that communicates with the counterflow channel 13. The surface of the pressure relief through hole 118 is provided with a breathable membrane. The breathable membrane is a component commonly used by those skilled in the art and will not be described in detail here. The surface of the breathable membrane usually has a microporous structure. The diameter of these micropores is usually between 0.1 and 10 micrometers. Gas molecules can pass through these micropores to achieve the function of air permeability, while liquid water cannot pass through due to surface tension, thereby achieving a waterproof effect. The pressure relief through hole 118 is used to release some pressure when the water outlet pipe 2 is blocked. This can remind the user of abnormal water pressure and also further prevent the water outlet pipe 2 from cracking and leaking due to excessive pressure inside the water outlet pipe 2.

[0029] In the first embodiment, the surface of the valve body end cover 115 is also provided with a valve body top cover 117. The connection position between the valve body end cover 115 and the valve body top cover 117 can press the edge of the film support 4. The film support 4 is a plastic part that is in the shape of a cover. The first magnet element 41 is disposed in the middle of the film support 4.

[0030] The top of the valve body cover 117 is provided with a vent hole, so that the pressure in the area between the surface of the diaphragm support 4 and the top of the valve body cover 117 is equal to the external air pressure; and the water inside the water storage tank 111 below the diaphragm support 4 cannot pass through the diaphragm support 4 to the area between the surface of the diaphragm support 4 and the top of the valve body cover 117.

[0031] Please continue to combine Figure 4 As shown, the valve core assembly 3 includes a valve core support 31, a silicone sealing block 32, and a second magnetic element 33. An annular support plate 311 is provided on the side wall of the valve core support 31, and the second magnetic element 33 is provided on the surface of the annular support plate 311. The silicone sealing block 32 is provided at the bottom of the annular support plate 311. The first spring 30 is disposed between the surface of the annular support plate 311 and the top of the columnar slide groove 116. There is a gap between the side wall of the annular support plate 311 and the inner wall of the columnar slide groove 116.

[0032] During implementation, when the first magnet element 41 moves upward under the deformation of the film support 4, the first magnet element 41 will greatly weaken or release the magnetic attraction force on the second magnet element 33; at this time, the elastic force of the first spring 30 pushes the annular support plate 311 to move downward; the annular support plate 311 simultaneously drives the second magnet element 33 and the silicone sealing block 32 to move towards the top of the first water channel 10 until the silicone sealing block 32 blocks the top of the first water channel 10; at this time, since there is no water flowing into the outlet pipe 2, the pressure in the outlet pipe 2 decreases, and the water pressure inside the valve body base 114 will press the entire valve core assembly 3 tightly against the top of the first water channel 10; at this time, even when the film support 4 returns to the set shape, the first magnet element 41 cannot attract the valve core assembly 3 to slide upward.

[0033] like Figure 7 , Figure 8 and Figure 10 As shown, the second embodiment of this utility model differs from the first embodiment in that: a second spring 42 is further provided between the surface of the thin film support 4 and the top of the valve body top cover 117; a sliding through hole 119 is further provided inside the valve body base 114 at the bottom of the first water channel 10, and a reset support 8 is slidably provided inside the sliding through hole 119; the two ends of the reset support 8 are respectively located outside the first water channel 10 and the inner valve body 11, and a third spring 9 is provided between one end of the reset support 8 and the outside of the inner valve body 11; Please continue to refer to this. Figure 9 and Figure 11 The reset support 8 is generally cylindrical, and a first spring limiting groove 81 is provided at one end of the reset support 8 near the outside of the valve body base 114. A second spring limiting groove 1141 coaxial with the first spring limiting groove 81 is provided on the outside of the valve body base 114. The third spring 9 is disposed between the first spring limiting groove 81 and the second spring limiting groove 1141. The third spring 9 will deform when the reset support 8 is pressed, and the reset support 8 can slide downward under the elastic force of the third spring 9 when the press is released.

[0034] The valve body base 114 has a second water passage 1142 on its side wall facing the reset support 8. The reset support 8 has a pressure relief passage 82 that communicates with the first water passage 10. The first water passage 10 and the second water passage 1142 are only connected when the third spring 9 is under pressure. The sliding through hole 119 has a first sealing ring 1191 inside. The side wall of the reset support 8 in the area of ​​the first water passage 10 has a second sealing ring 83 and a limiting plate 84. The limiting plate 84 is located above the second sealing ring 83 and the diameter of the limiting plate 84 is larger than the diameter of the sliding through hole 119.

[0035] When the valve core assembly 3 is in the second state in the first embodiment, the water pressure inside the valve body base 114 will press the entire valve core assembly 3 tightly against the top of the first water passage 10. At this time, the first magnetic element 41 cannot complete the reset of the valve core assembly 3. During the reset process of the valve core assembly 3 using the reset support 8, pressing the reset support 8 gradually connects the pressure relief channel 82 inside the reset support 8 with the second water channel 1142. At this time, the water and pressure inside the valve body base 114 flow back into the first water channel 10 from the pressure relief channel 82. As the reset support 8 is pressed continuously, the top of the reset support 8 lifts up the entire valve core assembly 3. Under the upward thrust and the magnetic action of the first magnetic element 41, the valve core assembly 3 slides upward inside the columnar groove 116. The reset of the valve core assembly 3 is completed, and the valve core assembly 3 releases the blockage of the first water channel 10.

[0036] As the water pressure inside the first water channel 10 gradually returns to normal, and the pressure relief channel 82 balances the water pressure inside the valve body base 114 and the water pressure inside the first water channel 10, the sliding of the reset support 8 is not restricted by the water pressure. The reset support 8 can be reset downward under the elastic force of the third spring 9. After reset, since the water pressure inside the first water channel 10 is greater than that outside, the water pressure inside the first water channel 10 firmly presses the reset support 8 against the limiting plate 84, so that the side wall of the reset support 8 is in a squeezed state with the first sealing ring 1191. The first sealing ring 1191 can restrict the internal water of the pressure relief channel 82 from flowing into the outside.

[0037] Working principle and usage of this utility model: 1. Normal circulation status: In the initial state, the external water inlet pipe is threadedly connected to the threaded housing 6 on one side of the valve body 1, while the water outlet of the water outlet pipe 2 on the right side of the valve body 1 is connected to the water inlet of the washing machine.

[0038] When the water flows normally, the water pressure inside the outlet pipe 2 is within the normal range, and there is no significant water flow in the countercurrent channel 13.

[0039] At this time, there is no water or insufficient water pressure in the water storage tank 111, the membrane support 4 does not deform, and the first magnet element 41 on the membrane support 4 overcomes the elastic force of the first spring 30 under the action of magnetic force, adsorbing the valve core assembly 3 (specifically the second magnet element 33 therein) and keeping it at the top of the columnar slide groove 116.

[0040] The silicone sealing block 32 of the valve core assembly 3 is far away from the end face of the first water passage 10, the water passage remains unobstructed, and the water can flow smoothly through the inner valve body 11, through the first water passage 10 and the valve body outlet passage 122, and finally flow out from the outlet pipe 2.

[0041] 2. Emergency shut-off status (water outlet pipe 2 blocked): When the water outlet pipe 2 becomes blocked, the water pressure inside it increases sharply.

[0042] High-pressure water flows in the opposite direction through the countercurrent channel 13 formed between the inner wall of the outlet pipe 2 and the side wall of the outlet channel 122 of the valve body; the countercurrent water enters the cavity of the water storage tank 111 through the channel connected to the water tank channel 112; as the water pressure in the water storage tank 111 continues to increase, the water pressure acts on the lower surface of the membrane support 4, driving it to produce an upward elastic deformation.

[0043] The deformation of the thin film support 4 causes the first magnet element 41 fixed thereon to move upward, resulting in a sharp weakening or disappearance of the magnetic attraction between the first magnet element 41 and the second magnet element 33 on the valve core assembly 3.

[0044] Once the magnetic attraction is insufficient to overcome the pre-tightening force of the first spring 30, the first spring 30 immediately pushes the valve core assembly 3 to slide rapidly downward along the columnar slide groove 116; the silicone sealing block 32 at the bottom of the valve core assembly 3 finally tightly covers the end face of the first water passage 10, forming a seal, thereby completely cutting off the water supply to the outlet pipe, achieving rapid emergency cut-off, and preventing pipe rupture.

[0045] The inner groove 110 on the inner wall of the columnar slide groove 116 balances the water pressure on both sides of the valve core assembly 3 throughout the process, ensuring that its sliding is not affected by the water pressure difference and that its action is sensitive and reliable.

[0046] In addition, some gas or trace amounts of liquid can be discharged through the pressure relief vent 118 (whose surface has a breathable membrane that allows gas to pass through but blocks liquid), which helps to relieve pressure and serves as a visual reminder of abnormal conditions.

[0047] After the first water passage 10 is cut off by the valve core assembly 3, the valve core assembly 3 is tightened by the residual water pressure in the valve body base 114 ("water pressure self-locking") and cannot be automatically reset.

[0048] Press the reset support 8 to make it slide inward against the elastic force of the third spring 9; during its sliding, the internal pressure relief channel 82 will align and connect with the second water channel 1142 on the valve body base 114; this connection establishes a new pressure relief path, and discharges the high pressure water that imprisoned the valve core assembly 3 in the valve body base 114 back to the first water channel 10, thereby releasing the "water pressure self-locking" state.

[0049] As the reset support 8 is pressed further, its top end will physically lift the valve core assembly 3, causing it to disengage from the valve seat; at the same time, as the distance between the first magnet element 41 and the second magnet element 33 shortens, the magnetic attraction force is restored and sufficient to overcome the force of the first spring 30, re-attracting the valve core assembly 3 and keeping it in the open position.

[0050] After the reset support 8 is released, it automatically resets and exits under the action of the third spring 9. The second sealing ring 83 on the reset support 8 cooperates with the first sealing ring 1191 in the sliding through hole 119 to ensure the sealing between the channels of the device during normal operation.

[0051] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A magnetically resetting type emergency shut-off device for pipe blockage, comprising a valve body (1), a detachable outlet pipe (2) connected to one end of the valve body (1), and the other end of the valve body (1) connected to an external inlet pipe, characterized in that, The valve body (1) includes an inner valve body (11) and an outer valve body (12). One side of the outer valve body (12) is integrally connected to the side wall of the inner valve body (11). The connection area between the outer valve body (12) and the inner valve body (11) is provided with a first water passage (10) to guide water from the inside of the inner valve body (11) to the inside of the outer valve body (12). The other side of the outer valve body (12) is provided with a snap-fit ​​housing (121) for snapping onto the water outlet pipe (2). The diameter of the valve body outlet channel (122) of the outer valve body (12) is smaller than the inner diameter of the water outlet pipe (2). The interior of the inner valve body (11) is provided with a sliding and magnetic valve core assembly (3). The position change of the valve core assembly (3) can block or open the end face of the first water passage (10). The exterior of the inner valve body (11) is provided with a water storage tank (111). The interior of the 111) is provided with a thin film support (4), and the thin film support (4) is provided with a first magnet element (41) coaxial with the valve core assembly (3). There is a counterflow channel (13) between the inner wall of the water outlet pipe (2) and the side wall of the valve body water outlet channel (122). The interior of the water storage tank (111) is provided with a water tank flow channel (112) connected to the counterflow channel (13). The counterflow channel (13) is used to guide the water flowing backward inside the water outlet pipe (2) through the interior of the water tank flow channel (112) to the interior of the water storage tank (111). When the thin film support (4) is in a set shape, the first magnet element (41) can attract the valve core assembly (3) to release the blockage on the end face of the first water channel (10). The water pressure change inside the water storage tank (111) located below the thin film support (4) can squeeze the thin film support (4) to deform.

2. The magnetically repositionable emergency shut-off device for pipe blockage as described in claim 1, characterized in that, The inner valve body (11) extends outward from the side near the water inlet pipe and is provided with a water inlet connection channel (113). A filter screen (5) is snapped into the inner side of the end of the water inlet connection channel (113), and a threaded housing (6) is threaded into the outer side of the end of the water inlet connection channel (113). The external water inlet pipe is threaded into the threaded housing (6). A check valve is also provided inside the water inlet connection channel (113).

3. The magnetically repositionable emergency shut-off device for pipe blockage as described in claim 1, characterized in that, The inner valve body (11) includes a valve body base (114) and a valve body end cap (115) threaded onto the valve body base (114). The valve body end cap (115) has a columnar groove (116) coaxial with the first water passage (10) inside the valve body base (114). The valve core assembly (3) is slidably connected to the inside of the columnar groove (116). The inner wall of the columnar groove (116) has several inner grooves (110) for balancing the water pressure between the top area of ​​the columnar groove (116) and the inner area of ​​the valve body base (114). The water storage tank (111) is disposed on the surface of the valve body end cap (115). A first spring (30) is disposed between the top of the valve core assembly (3) and the columnar groove (116).

4. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 3, characterized in that, The surface of the valve body end cap (115) is also provided with a valve body top cap (117). The connection position between the valve body end cap (115) and the valve body top cap (117) can press the edge of the film support (4). The film support (4) is a plastic part that is in the shape of a cover. A second spring (42) is also provided between the surface of the film support (4) and the top of the valve body top cap (117). The first magnet element (41) is located in the middle of the film support (4).

5. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 3, characterized in that, The valve core assembly (3) includes a valve core bracket (31), a silicone sealing block (32), and a second magnetic element (33). The valve core bracket (31) has an annular support plate (311) on its side wall. The annular support plate (311) has a second magnetic element (33) on its surface. The annular support plate (311) has a silicone sealing block (32) at its bottom. The first spring (30) is located between the surface of the annular support plate (311) and the top of the columnar slide groove (116). There is a gap between the side wall of the annular support plate (311) and the inner wall of the columnar slide groove (116).

6. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 3, characterized in that, The surface of the valve body end cap (115) is also provided with a pressure relief through hole (118) that communicates with the counterflow channel (13), and the surface of the pressure relief through hole (118) is provided with a breathable membrane.

7. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 3, characterized in that, A clamp (7) is provided between the inner wall of the snap-fit ​​housing (121) and the outer wall of the water outlet pipe (2). The clamp (7) is located at the connection part between the snap-fit ​​housing (121) and the water outlet pipe (2). The clamp (7) clamps one end of the water outlet pipe (2) to the side wall of the valve body water outlet channel (122). The snap-fit ​​part between the clamp (7) and the snap-fit ​​housing (121) is also provided with a buckle (71). The surface of the snap-fit ​​housing (121) is provided with a groove adapted to the buckle (71).

8. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 4, characterized in that, The valve body base (114) is provided with a sliding through hole (119) at the bottom of the first water channel (10). A reset support (8) is slidably provided inside the sliding through hole (119). The two ends of the reset support (8) are located outside the first water channel (10) and the inner valve body (11), respectively. A third spring (9) is provided between one end of the reset support (8) and the outside of the inner valve body (11). When the reset support (8) is pressed, it can lift the valve core assembly (3) to release the blockage of the first water channel (10).

9. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 8, characterized in that, The reset support (8) is cylindrical in shape and has a first spring limiting groove (81) at one end near the outside of the valve body base (114). The valve body base (114) has a second spring limiting groove (1141) coaxial with the first spring limiting groove (81) on its outside. The third spring (9) is located between the first spring limiting groove (81) and the second spring limiting groove (1141).

10. The magnetically repositionable emergency shut-off device for pipe blockage according to claim 9, characterized in that, The valve body base (114) has a second water channel (1142) on the side wall facing the reset support (8). The reset support (8) has a pressure relief channel (82) connected to the first water channel (10). The first water channel (10) and the second water channel (1142) are only connected when the third spring (9) is under pressure. The sliding through hole (119) has a first sealing ring (1191) inside. The side wall of the reset support (8) in the area of ​​the first water channel (10) has a second sealing ring (83) and a limiting plate (84). The limiting plate (84) is located above the second sealing ring (83) and the diameter of the limiting plate (84) is larger than the diameter of the sliding through hole (119).

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