An explosion-proof delay valve core and a water outlet device

Abstract

The present invention discloses an explosion-proof delay valve core and a water outlet device, relating to the field of valve cores, which includes a main body, a valve rod, a diaphragm and a piston assembly. The diaphragm is arranged in the main body and encloses a pressure chamber with the main body. A drain port communicates the pressure chamber with the outside. The diaphragm includes an elastically deformable central ring portion and a mounting hole. The piston assembly includes an elastic support member and a piston. The piston includes a water replenishing channel communicating the pressure chamber and the water inlet, and a diversion groove communicating the pressure chamber and the water outlet. The piston is inserted through the mounting hole. The elastic support member is arranged on the side of the piston outside the pressure chamber to provide an elastic force to the central ring portion, so that one end of the diversion groove located in the pressure chamber is sealed by the central ring portion. When the pressure in the pressure chamber or the water inlet increases, the central ring portion releases the seal on the diversion groove. Therefore, whether there is an abnormal high pressure in the pressure chamber or at the water inlet, the valve core can make the diversion groove in a conducting state, automatically and timely discharge the water in the pressure chamber, and avoid the valve core from bursting.

Description

Technical Field

[0001] The present invention relates to the field of valve cores, and in particular to an explosion-proof delay valve core and a water outlet device. Background Art

[0002] The delay valve core is a commonly used water outlet control module for many water outlet devices such as faucets and toilets, and can be used to control the on-off time of water flow and the water outlet condition. However, when it encounters problems such as blocked flow channels, freezing in cold weather, or hydraulic shock (water hammer effect), the valve core is prone to burst due to excessive hydraulic pressure, resulting in damage, affecting the user experience and even the safety of users. Summary of the Invention

[0003] The present invention provides an explosion-proof delay valve core and a water outlet device, aiming to solve the technical problem that the delay valve core in the prior art is prone to burst and be damaged when the hydraulic pressure is too high.

[0004] To achieve the above object, the first aspect embodiment of the present invention provides an explosion-proof delay valve core, including:

[0005] A main body, including a water inlet, a water outlet, and a drain port;

[0006] A valve stem, passing through the drain port to control the opening and closing of the drain port;

[0007] A diaphragm, arranged in the main body and enclosing a pressure chamber with the main body, the drain port communicating the pressure chamber with the outside, the diaphragm including a mounting hole surrounded by an elastically deformable central ring portion;

[0008] A piston assembly, including an elastic support and a piston for controlling the opening and closing of the water inlet, the piston including a water replenishing channel communicating the pressure chamber and the water inlet, and a diversion groove communicating the pressure chamber and the water outlet, the piston passing through the mounting hole, the elastic support being arranged on the side of the piston outside the pressure chamber to provide an elastic force to the central ring portion, so that one end of the diversion groove located in the pressure chamber is sealed by the central ring portion, and when the pressure in the pressure chamber or the water inlet increases, the central ring portion releases the seal on the diversion groove.

[0009] According to the explosion-proof delay valve core provided by the first aspect embodiment of the present invention, by arranging a diversion groove on the outer wall of the piston, when the valve core encounters an abnormal high pressure during use, part of the water flow in the pressure chamber can be discharged in time. And through the cooperation between the central ring portion on the diaphragm and the elastic support, no matter whether an abnormal high pressure appears in the pressure chamber or at the water inlet, the diversion groove can be in a conducting state, automatically and timely discharging the water in the pressure chamber to avoid the valve core from bursting.

[0010] According to some embodiments of the present invention, the piston includes a cylinder portion which is inserted through the mounting hole, and the diversion groove is provided on the outer peripheral wall of the cylinder portion.

[0011] According to some embodiments of the present invention, a limiting member is provided on one side of the cylinder portion located in the pressure chamber. Both the central ring portion and the diversion groove are provided on the side of the limiting member close to the diaphragm. The elastic support member provides an elastic force to the central ring portion so that the central ring portion abuts against the limiting member to seal one end of the diversion groove.

[0012] According to some embodiments of the present invention, the limiting member includes a snap ring, and a snap ring groove for installing the snap ring is provided on one side of the cylinder portion located in the pressure chamber.

[0013] According to some embodiments of the present invention, the piston further includes a plug head which is connected to one end of the cylinder portion close to the water inlet. The outer diameter of the plug head is greater than the outer diameter of the cylinder portion. One end of the elastic support member abuts against the central ring portion, and the other end abuts against the plug head.

[0014] According to some embodiments of the present invention, the elastic support member includes a first elastic member and a sliding base. One end of the sliding base abuts against the central ring portion, and the other end abuts against the first elastic member. The end of the first elastic member facing away from the sliding base abuts against the plug head.

[0015] According to some embodiments of the present invention, a drain channel is further included, and the drain channel communicates the pressure chamber with the outside.

[0016] According to some embodiments of the present invention, an adjusting member is further included. The adjusting member is movably arranged in the water replenishing channel to change the cross-sectional area of the water passing through the water replenishing channel.

[0017] According to some embodiments of the present invention, a third elastic member arranged in the pressure chamber is further included. One end of the third elastic member abuts against the inner wall of the pressure chamber, and the other end abuts against the central ring portion.

[0018] An embodiment of the second aspect of the present invention provides a water outlet device, including: the above-mentioned explosion-proof delay valve core.

[0019] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0021] Figure 1 Shows an overall schematic diagram of the explosion-proof delay valve core provided by an embodiment of the present invention;

[0022] Figure 2 Shows an exploded schematic diagram of the explosion-proof delay valve core provided by an embodiment of the present invention;

[0023] Figure 3 Shows a structural schematic diagram of the explosion-proof delay valve core in a closed state provided by an embodiment of the present invention;

[0024] Figure 4 Shows a structural schematic diagram of the explosion-proof delay valve core in an open state provided by an embodiment of the present invention;

[0025] Figure 5 Shows a partially enlarged schematic diagram of the explosion-proof delay valve core provided by an embodiment of the present invention;

[0026] Figure 6 Shows a structural schematic diagram of the third housing provided by an embodiment of the present invention;

[0027] Figure 7 Shows a structural schematic diagram of the second housing provided by an embodiment of the present invention;

[0028] Figure 8 Shows a structural schematic diagram of the diaphragm provided by an embodiment of the present invention;

[0029] Figure 9 Shows a structural schematic diagram of the piston provided by an embodiment of the present invention;

[0030] Figure 10 Shows a structural schematic diagram of the piston provided by an embodiment of the present invention;

[0031] Figure 11 Shows a structural schematic diagram of the adjusting member provided by an embodiment of the present invention;

[0032] Reference numerals:

[0033] 1000, explosion-proof delay valve core;

[0034] 100, main body; 110, first housing; 111, valve rod sliding cavity; 112, through hole; 113, second elastic member; 114, drain port; 120, second housing; 121, water inlet; 122, water outlet; 123, slideway; 130, third housing; 131, bleed port; 132, bleed channel; 140, pressure chamber;

[0035] 200, diaphragm; 210, central ring portion; 220, mounting hole;

[0036] 300, Piston assembly; 310, Cylindrical part; 311, Flow guiding groove; 312, Water replenishing channel; 3121, First water replenishing section; 3122, Second water replenishing section; 3123, Third water replenishing section; 313, Limiting part; 3131, Snap ring; 3132, Snap ring groove; 320, Plug head; 321, Rib; 330, Elastic support; 331, First elastic member; 332, Sliding base; 340, Adjusting part; 341, Adjusting head; 342, Piston rod; 350, Filter screen; 360, Third elastic member;

[0037] 400, Valve stem;

[0038] 500, Valve stem sleeve. Specific embodiments

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0040] Refer to Figure 1 , in some specific embodiments of the present invention, an explosion-proof delay valve core 1000 is provided, which can be arranged in water outlet devices such as faucets and toilets, and can control the water outlet time and water outlet conditions, avoiding the situation of too small water volume or long running water caused by too fast closing speed. When the inside or outside of the valve core freezes, becomes blocked and builds up pressure due to extreme low temperature, or is subjected to hydraulic shock, the internal pressure of the valve core can be released in time to avoid explosion and ensure the use experience and safety performance.

[0041] Refer to Figures 1-10 , the explosion-proof delay valve core 1000 provided by the embodiment of the present invention includes a main body 100, a valve rod 400, a diaphragm 200 and a piston assembly 300.

[0042] Specifically, the main body 100 is formed by combining a first housing 110, a second housing 120, and a third housing 130. A slideway 123 is provided on the second housing 120. The first housing 110 and the second housing 120 fix the third housing 130 therebetween. The diaphragm 200 is disposed within the main body 100, and the edge of the diaphragm 200 is clamped between the second housing 120 and the third housing 130. A pressure chamber 140 is enclosed between the diaphragm 200 and the third housing 130. Since only the edge of the diaphragm 200 is fixed, other parts of the diaphragm 200 can move in the slideway 123 of the second housing 120 to change the volume of the pressure chamber 140. The water inlet 121 and the water outlet 122 are both provided on the second housing 120 to allow water flow. A drain port 131 communicating the pressure chamber 140 with the outside is provided on the third housing 130, so that the water in the pressure chamber 140 can flow out to change the water pressure in the pressure chamber 140. A through hole 112 is provided on the first housing 110, and the valve stem 400 can pass through the through hole 112 and is slidably disposed in the drain port 131 to open or close the drain port 131.

[0043] Furthermore, a valve stem sliding chamber 111 is also provided on the first housing 110. The valve stem 400 enters the through hole 112, passes through the valve stem sliding chamber 111, and then enters the drain port 131 for plugging. And, a second elastic member 113, which can be a spring or the like, is disposed within the valve stem sliding chamber 111. The two ends of the second elastic member 113 abut between the valve stem 400 and the second housing 120 to provide an elastic force in the direction opposite to the pressing direction to the valve stem 400, so that the valve stem 400 can reset itself after being pressed. Also, a valve stem sleeve 500 is provided on the first housing 110. The valve stem sleeve 500 passes through the through hole 112 and then covers the valve stem 400 for the user to press.

[0044] An installation hole 220 enclosed by an elastically deformable central ring portion 210 is provided in the middle of the diaphragm 200. Among them, the thickness of the central ring portion 210 in the moving direction of the diaphragm 200 can be set to be greater than the thickness of other parts of the diaphragm 200.

[0045] The piston assembly 300 includes an elastic support member 330 and a piston. The piston is movably disposed in the second housing 120 to control the opening and closing of the water inlet 121. Among them, a water replenishing channel 312 communicating the pressure chamber 140 and the water inlet 121 is provided on the piston, and a diversion groove 311 communicating the pressure chamber 140 and the water outlet 122 is provided on the outer wall of the piston. And one end of the piston passes through the mounting hole 220 of the diaphragm 200, so that a part of the piston enters the pressure chamber 140. An elastic support member 330 is provided on the side of the piston facing away from the pressure chamber 140. Specifically, the piston penetrates into the elastic support member 330. One end of the elastic support member 330 abuts against a supportable part on the piston or a supportable part in the main body, and the other end pushes against the central ring portion 210 to provide an elastic force pointing to the pressure chamber 140 to the central ring portion 210. At this time, the central ring portion 210 is subjected to an elastic force and seals one end of the diversion groove 311 located in the pressure chamber 140. When the pressure at the pressure chamber 140 or the water inlet 121 increases, the central ring portion 210 can be released from sealing the diversion groove 311, so that the diversion groove 311 conducts the pressure chamber 140 and the water outlet 122, and the water flow in the pressure chamber 140 can flow out along the diversion groove 311 to relieve pressure.

[0046] Next, the working principle and process of the explosion-proof delay valve core 1000 provided in this embodiment will be further described:

[0047] When the valve stem 400 does not move (in the state of blocking the drainage port 131), the water pressure in the pressure chamber 140 is the same as the water pressure at the water inlet 121. At this time, the piston blocks the water inlet 121 and no water flows out of the water outlet 122. When the valve stem 400 is pressed, the drainage port 131 is opened. Since the drainage port 131 communicates the pressure chamber 140 and the outside (atmospheric pressure), at this time, since the water pressure in the pressure chamber 140 is greater than the atmospheric pressure, the water flow in the pressure chamber 140 is drained through the drainage port 131, and the pressure in the pressure chamber 140 is reduced to be less than the pressure at the water inlet 121. At this time, the piston is pushed open by the pressure at the water inlet 121, and the water inlet 121 and the water outlet 122 are communicated to realize water discharge. When the pressing force on the valve stem 400 is removed, the valve stem 400 is reset under the elastic force of the second elastic member 113 and blocks the drainage port 131. At this time, the water inlet 121 is still in the open state, but since the water pressure in the pressure chamber 140 is relatively low, a part of the water flow at the water inlet 121 will enter the pressure chamber 140 through the water replenishing channel 312, so that the pressure in the pressure chamber 140 gradually increases until it is the same as the inlet pressure. At this time, the piston is pushed by the pressure in the pressure chamber 140 to close the water inlet 121, and thus the opening and closing of a delay valve core are completed once.

[0048] When the pressures at the water inlet 121 of the valve core and in the pressure chamber 140 are normal, the central ring portion 210 of the diaphragm 200 moves upward under the elastic force of the elastic support member 330 until one end of the diversion groove 311 located in the pressure chamber 140 is sealed, preventing the water flow in the pressure chamber 140 from flowing out through the diversion groove 311, thereby balancing the pressure inside the valve core.

[0049] When the pressure in the pressure chamber 140 abnormally increases, such as when the volume gradually increases due to freezing at low temperatures, the ice-water mixture with a gradually increasing volume in the pressure chamber 140 will exert pressure on the diaphragm 200, thus causing the central ring portion 210 to release the seal of the diversion groove 311, making the diversion groove 311 conduct the pressure chamber 140 and the water outlet 122, allowing part of the water flow in the pressure chamber 140 to drain away, reducing the pressure in the pressure chamber 140 and preventing bursting.

[0050] It should be noted that there are various situations in the process of the central ring portion 210 releasing the seal of the diversion groove 311, such as:

[0051] When the force F1 required for the central ring portion 210 to be squeezed and deformed is less than the force F2 required for the elastic support member 330 to undergo elastic deformation, the pressure in the pressure chamber 140 will first reach F1 during the rising process. At this time, the elastic support member 330 does not deform, the position of the central ring portion 210 does not change, but it will be compressed and deformed (thinned). At this time, one end of the diversion groove 311 is exposed to communicate with the pressure chamber 140, releasing the sealed state;

[0052] When the force F1 required for the central ring portion 210 to be squeezed and deformed is greater than the force F2 required for the elastic support member 330 to undergo elastic deformation, the pressure in the pressure chamber 140 will first reach F2 during the rising process. At this time, the elastic support member 330 is compressed, and the central ring portion 210 will not be compressed and deformed. Instead, it will move in the compression direction along with the compression of the elastic support member 330, and one end of the diversion groove 311 will be exposed, releasing the sealed state;

[0053] It can be understood that when the force F1 required for the central ring portion 210 to be squeezed and deformed is equal to the force F2 required for the elastic support member 330 to undergo elastic deformation, the compression of the elastic support member 330 and the deformation of the central ring portion 210 occur simultaneously to expose the diversion groove 311.

[0054] When the pressure at the water inlet 121 (water source) rises abnormally, such as when ice or water hammer occurs, the elastic support member 330 is affected by the high pressure at the water inlet 121 and further applies force to the center ring portion 210. Pushed by the elastic support member 330, the center ring portion 210 also applies force to the water in the pressure chamber 140. Since the drain port 131 is blocked and the water in the pressure chamber 140 is incompressible, the center ring portion 210 is also subjected to the reaction force of the water in the pressure chamber 140. The center ring portion 210 will be compressed (thinned) in the direction away from the pressure chamber 140 under the reaction force of the water in the pressure chamber 140, thereby exposing one end of the guide groove 311 and releasing the sealing state.

[0055] According to the explosion-proof time-delay valve core 1000 provided by some specific embodiments of the present invention, by providing a guide groove 311 on the outer wall of the piston, when the valve core encounters abnormally high pressure during use, part of the water flow in the pressure chamber 140 can be promptly discharged. In addition, through the cooperation between the central ring portion 210 on the diaphragm 200 and the elastic support member 330, whether the valve core is in the pressure chamber 140 or at the water inlet 121, the guide groove 311 can be in a conducting state, and the water in the pressure chamber 140 can be automatically and promptly discharged to prevent the valve core from bursting.

[0056] refer to Figure 3 , Figure 5 , Figure 9 and Figure 10 In some embodiments of the present invention, the piston includes a cylinder portion 310 , and a portion of the cylinder portion 310 is inserted into the mounting hole 220 , and the guide groove 311 is disposed on the outer peripheral wall of the cylinder portion 310 .

[0057] refer to Figure 3 , Figure 5 and Figure 9 In some embodiments of the present invention, a limiting member 313 is provided on one side of the cylinder 310 located in the pressure chamber 140. The central ring 210 and the guide groove 311 are both provided on the side of the limiting member 313 close to the diaphragm 200. At this time, the central ring 210 is equivalent to being clamped between the limiting member 313 and the elastic support member 330. The elastic support member 330 provides elastic force to the central ring 210. The central ring 210 abuts against the limiting member 313 under the action of the elastic force. At this time, the central ring 210 isolates the guide groove 311 from the pressure chamber 140, so that one end of the guide groove 311 is in a sealed state.

[0058] It can be understood that the limiting member 313 can be in various forms. The limiting function can be achieved by fixing other components on the cylindrical part 310, or it can be an annular rib integrally formed on the cylindrical part 310, or the shape of the cylindrical part 310 itself can be set to limit the central ring part 210. For example, the outer peripheral wall of the cylindrical part 310 is set to a shape similar to an inverted triangle with an outer diameter gradually decreasing in the direction away from the pressure chamber 140, and the position of the central ring part 210 is limited by the part with a larger outer diameter in the upper part.

[0059] Reference Figure 2 、 Figure 3 and Figure 9 , in some specific embodiments of the present invention, the limiting member 313 includes a snap ring 3131. A snap ring groove 3132 is provided on one side of the cylindrical part 310 of the piston located in the pressure chamber 140. The snap ring 3131 can be snapped into the snap ring groove 3132 to achieve positioning, so as to realize the limiting function.

[0060] Reference Figure 3 and Figure 9 , in some specific embodiments of the present invention, the piston further includes a plug head 320. The plug head 320 is connected to one end of the cylindrical part 310 close to the water inlet 121. When the piston moves in the direction away from the pressure chamber 140, the plug head 320 can block the water inlet 121 to close the water flow. Wherein, the outer diameter of the plug head 320 is larger than that of the cylindrical part 310. One end of the elastic support member 330 abuts against the central ring part 210, and the other end can abut against the surface of the plug head 320, so as to realize the positioning and support of the elastic support member 330.

[0061] It can be understood that the outer diameter of the plug head 320 can also be equal to or smaller than the outer diameter of the cylindrical part 310, as long as it can block the water inlet 121. At this time, a protruding annular rib can be provided on the outer wall of the part of the cylindrical part 310 outside the pressure chamber 140 to provide an abutting fulcrum for the elastic support member 330.

[0062] Reference Figure 2 、 Figure 3 and Figure 5, in some specific embodiments of the present invention, the elastic support member 330 includes a first elastic member 331 and a sliding base 332. The cylindrical portion 310 is slidably disposed through the first elastic member 331 and the sliding base 332. One end of the sliding base 332 abuts against the supporting central ring portion 210, and the other end abuts against the first elastic member 331, while the end of the first elastic member 331 facing away from the sliding base 332 abuts against the plug 320. Thus, the first elastic member 331 provides an elastic force to the sliding base 332 to enable the sliding base 332 to support the central ring portion 210. Moreover, by the contact between the sliding base 332 and the central ring portion 210, the force received by the central ring portion 210 can be made more uniform, avoiding the skew of the movement of the diaphragm 200 due to the small contact area between the first elastic member 331 and the central ring portion 210 when the first elastic member 331 directly pushes the central ring portion 210.

[0063] Further, the sliding base 332 is slidably disposed in the slideway 123, thereby limiting that the sliding base 332 can only move along the elastic force direction of the first elastic member 331, further avoiding the skew of the movement of the diaphragm 200.

[0064] It can be understood that the first elastic member 331 can be set as various different types of elastic components such as a spring, a disc spring, etc., which is not limited herein.

[0065] Reference Figure 1 、 Figure 3 And Figure 6 , in some specific embodiments of the present invention, a drain channel 132 is further provided on the third housing 130, and a drain port 114 communicating with the outside is provided on the first housing 110. The drain channel 132 communicates the pressure chamber 140 with the outside. Specifically, the drain channel 132 communicates with the pressure chamber 140 through a drain port 131, and the other end communicates with the outside through the drain port 114. Thus, when the valve stem 400 is pressed, the drain port 131 opens, and the water flow in the pressure chamber 140 can enter the drain channel 132 through the drain port 131 and is drained through the drain port 114, thereby reducing the water pressure in the pressure chamber 140 to open the piston.

[0066] Reference Figure 3 、 Figure 10 And Figure 11 , in some specific embodiments of the present invention, an adjusting member 340 is further included. The adjusting member 340 is movably disposed in the water replenishing channel 312. During the movement of the adjusting member 340, the water passing cross-sectional area of the water replenishing channel 312 can be changed. Thus, the time for the pressure recovery in the pressure chamber 140 and the time for the opened piston to re-seal the water inlet 121 are changed, and the user can freely control the delay time of the delay valve through this adjusting member 340.

[0067] Specifically, the adjusting member 340 includes a piston rod 342. The water replenishing channel 312 at least includes a first water replenishing section 3121 and a second water replenishing section 3122 arranged in sequence along the water replenishing inlet direction. The diameter of the first water replenishing section 3121 is smaller than that of the second water replenishing section 3122. The piston rod 342 is slidably disposed in the water replenishing channel 312. When the piston rod 342 slides from one of the first water replenishing section 3121 and the second water replenishing section 3122 to the other, the water passing area between the outer peripheral wall of the piston rod 342 and the inner wall of the water replenishing channel 312 changes.

[0068] It can be understood that the second water replenishing section 3122 can be set in the shape of a "flare" with a gradually increasing diameter along the water replenishing inlet direction. At this time, when the piston rod 342 slides in the second water replenishing section 3122, the water passing cross-sectional area changes continuously, providing users with more choices for regulating the delay time.

[0069] In some specific embodiments of the present invention, the adjusting member 340 further includes an adjusting head 341 connected to the piston rod 342. External threads are provided on the outer peripheral wall of the adjusting head 341. The water replenishing channel 312 is further provided with a third water replenishing section 3123. Internal threads are provided on the inner shaft wall of the third water replenishing section 3123. The adjusting head 341 is screwed into the third water replenishing section 3123.

[0070] Thus, the user can rotate the adjusting head 341 to adjust the position of the piston rod 342 in the water replenishing channel 312, thereby changing the water passing cross-sectional area.

[0071] Reference Figure 2 and Figure 3 In some specific embodiments of the present invention, a filter screen 350 is further included. The filter screen 350 is disposed at the water inlet end of the water replenishing channel 312, so that impurities such as sediment in the water flow can be isolated from the water replenishing channel 312, avoiding impurities entering the water replenishing channel 312 and causing jamming between the piston rod 342 and the water replenishing channel 312, or even blocking the water replenishing channel 312.

[0072] Reference Figure 9 In some specific embodiments of the present invention, a plurality of convex ribs 321 are provided on the outer side of the water inlet end of the water replenishing channel 312. Specifically, the plurality of convex ribs 321 are located on the side of the plug 320 facing away from the cylindrical portion 310 and are arranged in a ring around the water replenishing channel 312 in sequence. The filter screen 350 is then covered on the plurality of convex ribs 321. Thus, an inlet channel is also formed between every two adjacent convex ribs 321, which can ensure sufficient water flow into the water replenishing channel 312.

[0073] Reference Figure 2 and Figure 3, in some specific embodiments of the present invention, it further includes a third elastic member 360 disposed in the pressure chamber 140, and the third elastic member 360 may be a spring. Specifically, one end of the third elastic member 360 abuts against the inner wall of the pressure chamber 140, and the other end abuts against the central ring portion 210. Thus, when the pressure chamber 140 is depressurized and the valve stem 400 blocks the flow discharge port 131, the spring provides a restoring elastic force to the diaphragm 200, increasing the volume of the pressure chamber 140, thereby increasing the pressure difference between the inside of the pressure chamber 140 and the water inlet at the water inlet 121, making the water flow into the water replenishing channel 312 more smooth and fast.

[0074] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention.

[0075] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0076] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the present invention, unless otherwise clearly defined and limited, the first feature being “on” or “under” the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being “under”, “below” and “beneath” the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0078] In the description of this specification, the description of reference terms such as “some specific embodiments” etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0079] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An explosion-proof delay valve core, characterized in that, Comprising: A main body, including a water inlet, a water outlet and a discharge port; A valve stem, passing through the discharge port to control the opening and closing of the discharge port; A diaphragm, disposed in the main body and enclosing a pressure chamber with the main body, the discharge port communicating the pressure chamber with the outside, the diaphragm including a mounting hole surrounded by an elastically deformable central ring portion; A piston assembly, including an elastic support member and a piston for controlling the on-off of the water inlet, the piston including a water replenishing channel communicating the pressure chamber and the water inlet, and a diversion groove communicating the pressure chamber and the water outlet, the piston passing through the mounting hole, the elastic support member being disposed on a side of the piston outside the pressure chamber to provide an elastic force to the central ring portion, so that one end of the diversion groove located in the pressure chamber is sealed by the central ring portion, when the pressure in the pressure chamber or the water inlet increases, the central ring portion releases the seal of the diversion groove.

2. The explosion-proof delay valve core according to claim 1, characterized in that, The piston includes a cylindrical portion, the cylindrical portion passing through the mounting hole, the diversion groove being disposed on an outer peripheral wall of the cylindrical portion.

3. The explosion-proof delay valve core according to claim 2, characterized in that, A limiting member is disposed on a side of the cylindrical portion located in the pressure chamber, both the central ring portion and the diversion groove are disposed on a side of the limiting member close to the diaphragm, the elastic support member provides an elastic force to the central ring portion so that the central ring portion abuts against the limiting member to seal one end of the diversion groove.

4. The explosion-proof delay valve core according to claim 3, characterized in that, The limiting member includes a snap ring, and a snap ring groove for installing the snap ring is disposed on a side of the cylindrical portion located in the pressure chamber.

5. The explosion-proof delay valve core according to any one of claims 2-4, characterized in that, The piston further includes a plug head, the plug head being connected to an end of the cylindrical portion close to the water inlet, an outer diameter of the plug head being greater than an outer diameter of the cylindrical portion, one end of the elastic support member abuts against the central ring portion, and the other end abuts against the plug head.

6. The explosion-proof delay valve core according to claim 5, characterized in that, The elastic support member includes a first elastic member and a sliding base, wherein one end of the sliding base abuts against the central ring portion, the other end abuts against the first elastic member, and an end of the first elastic member facing away from the sliding base abuts against the plug head.

7. The explosion-proof delay valve core according to claim 1, characterized in that, It further includes a discharge channel, the discharge channel communicating the pressure chamber with the outside.

8. The explosion-proof delay valve core according to claim 1, wherein, It further includes an adjusting member, the adjusting member being movably disposed in the water replenishing channel to change a water passing cross-sectional area of the water replenishing channel.

9. The explosion-proof delay valve core according to claim 1, characterized in that, It further includes a third elastic member disposed in the pressure chamber, one end of the third elastic member abutting against an inner wall of the pressure chamber, and the other end abutting against the central ring portion.

10. Water outlet device, characterized in that, Including the explosion-proof delay valve core according to any one of claims 1-9.

Images