Water inlet valve capable of buffering water hammer effect and closestool

Abstract

The utility model relates to a water inlet valve capable of buffering the water hammer effect and a closestool. The water inlet valve comprises a valve body, a valve element and a buffer mechanism. The valve body is provided with a water inlet and a water outlet which are communicated with each other; the valve element is arranged on the valve body and can be used for blocking or connecting the water inlet and the water outlet; the buffer mechanism is arranged on the valve body and comprises a base, a blocking element and an elastic element, the elastic element is arranged between the base and the blocking element, the two ends of the elastic element make contact with the blocking element and the base respectively, the blocking element can move in the axial direction of the elastic element relative to the valve body, and the blocking element is arranged on the base. A first space located on the side, opposite to the elastic element, of the blocking element is formed in the buffering mechanism, and the first space communicates with the water inlet. According to the water inlet valve, the impact of the water hammer effect on a pipe network can be reduced, and damage to the pipe network is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of solenoid valves, and in particular to a water inlet valve and a toilet for buffering water hammer effect. Background Art

[0002] A water inlet valve is usually installed on the toilet to control the water inlet switch. The water inlet of the water inlet valve is connected to the pipe network, and the water outlet is connected to the water tank of the toilet. When the water inlet valve is opened, the water in the pipe network can flow into the water tank of the toilet through the water inlet valve for flushing the toilet. When the water inlet valve is closed, the water flow changes suddenly, which will produce a water hammer effect and cause impact on the pipe network. The industry has safety regulations for the impact of the water hammer effect on the pipe network when the water inlet valve is closed, so as to control the damage to the pipe network. However, the current water hammer effect of the water inlet valve has a large impact on the pipe network, which is difficult to meet the safety requirements. Summary of the invention

[0003] Based on this, it is necessary to provide a water inlet valve and toilet that can buffer the water hammer effect in order to address the problem that the water hammer effect of the current water inlet valve has a large impact on the pipe network and is difficult to meet safety regulations.

[0004] A water inlet valve for buffering water hammer effect, the water inlet valve comprising:

[0005] A valve body is provided with a water inlet and a water outlet which are interconnected;

[0006] a valve element, disposed on the valve body, capable of blocking or connecting the water inlet and the water outlet; and

[0007] A buffer mechanism is arranged on the valve body and includes a base, a blocking element and an elastic element. The elastic element is arranged between the base and the blocking element. Both ends of the elastic element are in contact with the blocking element and the base respectively. The blocking element can move relative to the valve body in the axial direction of the elastic element. The buffer mechanism forms a first space located on the side of the blocking element facing away from the elastic element, and the first space is connected to the water inlet.

[0008] In the above-mentioned water inlet valve, the first space is connected to the water inlet. When the valve element blocks the water inlet and the water outlet, the water inlet valve is closed. The impact force generated by the water hammer effect will push the blocking element to move toward the side where the elastic element is located in the axial direction of the elastic element, thereby compressing the elastic element and buffering the impact force of the water flow, which is beneficial to reducing the impact of the water hammer effect on the pipeline network and reducing the damage to the pipeline network, thereby helping to meet safety regulations.

[0009] In one embodiment, the valve body includes a main body, a water inlet portion and a first mounting portion arranged on the main body, the water inlet is arranged at the water inlet, the main body is provided with a chamber connected to the water inlet, the first mounting portion is connected to the chamber, and the buffer mechanism is arranged at the first mounting portion.

[0010] In one embodiment, the water inlet portion and the first mounting portion are respectively connected to opposite sides of the main body, and the blocking element is located on a side of the elastic element facing the water inlet portion; and / or,

[0011] The main body is provided with an annular cavity which is arranged around the chamber and connected to the chamber, the water inlet and the first mounting portion are both connected to the annular cavity, the main body is provided with a baffle which separates the chamber and the annular cavity, and the valve element can abut against the baffle to block the chamber and the annular cavity, or leave the baffle to connect the chamber and the annular cavity.

[0012] In one embodiment, the first mounting portion has an opening at one side away from the main body, and the base is disposed at an end of the first mounting portion and blocks the opening;

[0013] And / or, the base is provided with a vent hole connecting the first mounting portion and the outside;

[0014] And / or, the blocking element is slidably disposed in the first mounting portion, and the buffer mechanism further comprises a sealing structure, which is embedded in the peripheral side surface of the blocking element and is located between the blocking element and the first mounting portion to seal the gap between the blocking element and the first mounting portion.

[0015] In one embodiment, the base is disposed in the valve body, the blocking element is disposed in the base, the blocking element is slidably connected to the base and sealed with the base, and the elastic element is disposed in the sealed space formed by the base and the blocking element.

[0016] In one embodiment, the base includes a bottom wall and a side wall, the side wall surrounds the periphery of the bottom wall and is connected to the bottom wall, the elastic element is arranged between the blocking element and the bottom wall, the blocking element is slidably connected to the side wall and is sealed with the side wall, and the side wall and the blocking element enclose to form the first space.

[0017] In one embodiment, the valve body includes a main body and a water inlet provided on the main body, the water inlet is provided on the water inlet, the main body is provided with a chamber connected to the water outlet, the base is provided in the water inlet, the first space is connected to the chamber, the side wall is spaced from the inner wall of the water inlet to form a second space connected to the water inlet, and the side wall is provided with a through hole connected to the first space and the second space;

[0018] The buffer mechanism also includes a limiting structure, which is arranged at one end of the side wall away from the bottom wall and is at least partially located in the first space. The limiting structure is hollow and has a limiting surface facing the blocking element. The limiting surface is used to abut the blocking element, and the distance between the limiting surface and the bottom wall is less than or equal to the distance between the through hole and the bottom wall.

[0019] In one embodiment, the blocking element includes a block portion and a protrusion provided on the side of the block portion facing the elastic element, and the end of the elastic element is sleeved on the protrusion; a recess connected to the first space is provided on the side of the block portion facing away from the elastic element, and the protrusion is a hollow structure.

[0020] In one embodiment, the valve body includes a main body and a second mounting portion arranged on the main body, the main body is provided with a cavity connected to the water inlet, the second mounting portion is provided with a through hole connected to the water inlet, the water inlet valve also includes a ventilation structure and a blocking structure provided on the second mounting portion, the ventilation structure is provided with a ventilation hole connected to the through hole and the outside, the blocking structure can move in a direction close to the ventilation structure to block the ventilation hole, or move in a direction away from the ventilation structure to connect the through hole and the ventilation hole; and / or,

[0021] The valve body includes a main body and a water outlet portion arranged on the main body, the water outlet is arranged on the water outlet, the main body is provided with a cavity connecting the water inlet and the water outlet, the water inlet valve also includes a noise reduction head, the noise reduction head is provided with a diversion network including multiple diversion ports, the noise reduction head is arranged on the water outlet, and the diversion network is opposite to the water outlet.

[0022] A toilet comprises a water inlet valve as described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a schematic diagram of the structure of a water inlet valve in some embodiments.

[0024] FIG. 2 is an exploded schematic diagram of the water inlet valve shown in FIG. 1 .

[0025] FIG. 3 is a schematic cross-sectional view of the water inlet valve shown in FIG. 1 .

[0026] FIG. 4 is a schematic structural diagram of a valve body in the water inlet valve shown in FIG. 1 .

[0027] FIG. 5 is a schematic diagram of the structure of a water inlet valve in some other embodiments.

[0028] FIG. 6 is a schematic cross-sectional view of the water inlet valve shown in FIG. 5 .

[0029] FIG. 7 is a schematic structural diagram of the buffer mechanism in the water inlet valve shown in FIG. 5 .

[0030] FIG. 8 is an exploded schematic diagram of the buffer mechanism shown in FIG. 7 .

[0031] Reference numerals:

[0032] 10. water inlet valve; 11. valve body; 111. main body; 1111. chamber; 1112. annular cavity; 1113. baffle; 112. water inlet; 1121. water inlet; 113. water outlet; 1131. water outlet; 114. first mounting part; 115. second mounting part; 1151. perforation; 12. valve element; 121. electromagnet; 122. connector; 123. valve core; 124. spring element; 13. buffer mechanism; 131. base; 1311. air vent; 1312. bottom wall; 131 3. Side wall; 1314. Through hole; 132. Blocking element; 1321. Blocking block portion; 1322. Recess; 1323. Protrusion; 133. Elastic element; 134. First space; 135. Second space; 136. Sealing structure; 137. Limiting structure; 1371. Limiting surface; 1372. Fastening portion; 14. Ventilation structure; 141. Ventilation hole; 15. Blocking structure; 151. Breathable portion; 1511. Groove; 152. Blocking column; 16. Noise reduction head; 161. Sleeve structure; 162. Diverter net. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] Please refer to Figures 1, 2 and 3, Figure 1 is a schematic diagram of the structure of the water inlet valve 10 in some embodiments, Figure 2 is an exploded schematic diagram of the water inlet valve 10 in some embodiments, and Figure 3 is a cross-sectional schematic diagram of the water inlet valve 10 in some embodiments. The water inlet valve 10 provided in the present application can be used in a toilet, and the valve body 11 of the water inlet valve 10 is provided with an inlet 1121 and a water outlet 1131 that are interconnected. The water inlet 1121 can be used to communicate with an external water source such as a pipe network, so that the external water source can supply water to the toilet through the water inlet valve 10, and the water outlet 1131 can be used to communicate with any applicable water storage element or water spray element such as a water tank of the toilet. The water inlet valve 10 further includes a valve element 12 disposed on the valve body 11. The valve element 12 includes but is not limited to any applicable switch valve such as a solenoid valve. The valve element 12 can block the water inlet 1121 and the water outlet 1131 to close the water inlet valve 10, so that the external water source connected to the water inlet 1121 cannot supply water to the toilet through the water inlet valve 10. The valve element 12 can also connect the water inlet 1121 and the water outlet 1131 to open the water inlet valve 10, so that water from the external water source can flow into the toilet through the water inlet valve 10. It can be understood that when the valve element 12 closes the water inlet valve 10, the flow of water in the water inlet valve 10 changes suddenly, which will produce a water hammer effect to impact the external water source such as the pipe network. The water inlet valve 10 provided by the present application can buffer the impact force of the water hammer effect on the pipe network when the valve is closed, thereby reducing the damage to the pipe network.

[0040] In some embodiments, the valve body 11 includes a main body 111 and a water inlet 112 and a water outlet 113 connected to the main body 111. The main body 111 is provided with a chamber 1111 communicating with a water inlet 1121 and a water outlet 1131. The water inlet 1121 is provided at one end of the water inlet 112 away from the main body 111, and the water outlet 1131 is provided at one end of the water outlet 113 away from the main body 111. The internal channels of the water inlet 112 and the water outlet 113 are both connected to the chamber 1111. The valve element 12 can block the water inlet 112 and the chamber 1111 to close the water inlet valve 10. When the valve element 12 connects the water inlet 112 and the chamber 1111, water in the pipe network connected to the water inlet 112 can flow into the chamber 1111 through the water inlet 112 and flow out of the water inlet valve 10 through the water outlet 113.

[0041] Further, in some embodiments, the water inlet valve 10 further includes a buffer mechanism 13 disposed on the valve body 11, the buffer mechanism 13 includes a base 131, a blocking element 132 and an elastic element 133, and the elastic element 133 includes but is not limited to any applicable element having an elastic recovery tendency when compressed, such as a spring and rubber. The elastic element 133 is disposed between the base 131 and the blocking element 132, and the two ends of the elastic element 133 are in contact with the blocking element 132 and the base 131 respectively. The blocking element 132 can move relative to the valve body 11 in the axial direction of the elastic element 133 to compress or release the elastic element 133. The buffer mechanism 13 is formed with a first space 134 located on the side of the blocking element 132 facing away from the elastic element 133, and the surface of the blocking element 132 facing away from the elastic element 133 defines one of the boundaries of the first space 134. When the water inlet valve 10 is opened or closed, the first space 134 is connected to the water inlet 1121. It is understandable that when the water inlet valve 10 is closed, the impact force generated by the water hammer effect will be transmitted to the first space 134, impacting the blocking element 132 on one side of the blocking element 132, thereby pushing the blocking element 132 to compress the elastic element 133, and the elastic recovery force of the elastic element 133 will produce a reaction force on the water flow, thereby buffering the impact force generated by the water hammer effect and reducing the impact of the water hammer effect on the pipe network. Therefore, the above-mentioned water inlet valve 10 is conducive to reducing the impact of the water hammer effect on the pipe network and reducing the damage to the pipe network, thereby helping to meet safety regulations.

[0042] In some embodiments, the valve body 11 further comprises a first mounting portion 114, the first mounting portion 114 connects the chamber 1111 with the water inlet 1121, and the buffer mechanism 13 is arranged on the first mounting portion 114. The first mounting portion 114 may be roughly in the shape of a hollow cylinder, one end of the first mounting portion 114 connected to the main body 111 connects the chamber 1111 with the water outlet 1131, and the other end is provided with an opening. The base 131 is arranged at one end of the first mounting portion 114 away from the main body 111, the blocking element 132 is slidably arranged on the side of the base 131 facing the main body 111, and the elastic element 133 is arranged between the blocking element 132 and the base 131. Therefore, when installing the buffer element, the blocking element 132 and the elastic element 133 may be sequentially installed into the first mounting portion 114 from the opening, and then the base 131 may be fixed on the first mounting portion 114 to block the opening of the first mounting portion 114, thereby making the installation of the buffer mechanism 13 more convenient.

[0043] In some embodiments, the blocking element 132 includes a block portion 1321 and a protrusion 1323 disposed on the side of the block portion 1321 facing the elastic element 133, the elastic element 133 is a spring, and one end of the elastic element 133 close to the blocking element 132 is sleeved on the protrusion 1323 to improve the structural reliability of the buffer mechanism 13. The protrusion 1323 can be a hollow structure, which is conducive to reducing the weight and setting cost of the water inlet valve 10. In some embodiments, a recess 1322 connected to the first space 134 is provided on the side of the block portion 1321 facing away from the elastic element 133, which is conducive to the impact force generated by the water hammer effect acting more fully on the blocking element 132, improving the buffering effect, and also helping to reduce the weight and setting cost of the water inlet valve 10.

[0044] In some embodiments, the blocking element 132 is sealed to the inner wall of the first mounting portion 114. For example, the buffer mechanism 13 further includes a sealing structure 136, which includes but is not limited to any suitable sealing element such as a rubber sealing ring. The sealing structure 136 is embedded in the outer peripheral side of the block portion 1321 and is located between the blocking element 132 and the first mounting portion 114. The sealing effect between the blocking element 132 and the first mounting portion 114 is achieved by squeezing the sealing structure 136 by the blocking element 132 and the first mounting portion 114, thereby preventing water from flowing into the space between the blocking element 132 and the base 131, thereby affecting the buffering effect of the buffer mechanism 13 on the impact force of the water flow. In some embodiments, the base 131 is provided with an air hole 1311 connecting the internal space of the first mounting portion 114 and the outside. When the impact force of the water flow pushes the blocking element 132 to squeeze the elastic element 133, the gas between the base 131 and the blocking element 132 can be discharged through the air hole 1311, making the movement of the blocking element 132 smoother, which is beneficial to improving the buffering effect of the impact force of the water flow.

[0045] Furthermore, when the buffer mechanism 13 is disposed on the first mounting portion 114, the water inlet portion 112 and the first mounting portion 114 are respectively connected to opposite sides of the main body portion 111, and the blocking element 132 is located on the side of the elastic element 133 and the base 131 facing the water inlet portion 112. With such an arrangement, the water inlet valve 10 can be generally flat in structure as a whole, and the size of the water inlet valve 10 in the axial direction perpendicular to the elastic element 133 can be compressed, and the influence of the arrangement of the buffer mechanism 13 and the first mounting portion 114 on the spatial layout of the water inlet valve 10 can be reduced, so that the water inlet valve 10 can adapt to the spatial layout of the toilet.

[0046] The communication mode between the water inlet 112, the first mounting portion 114 and the chamber 1111 is not limited, as long as the first space 134 can always communicate with the water inlet 1121 in the closed and open states, and the valve element 12 can block the water inlet 1121 and the water outlet 1131 or connect the water inlet 1121 and the water outlet 1131. As shown in combination with Figures 3 and 4, in some embodiments, the main body 111 is further provided with an annular cavity 1112 arranged around the chamber 1111 and communicating with the chamber 1111, and the water inlet 112 and the first mounting portion 114 are both provided with openings to communicate with the annular cavity 1112, for example, two opposite positions of the annular cavity 1112 are respectively connected on opposite sides of the chamber 1111. The chamber 1111 is connected to the water outlet 1131, and the main body 111 is provided with a baffle 1113 separating the chamber 1111 and the annular cavity 1112. The valve element 12 can abut against the baffle 1113 to block the chamber 1111 and the annular cavity 1112, thereby blocking the water inlet 1121 and the water outlet 1131, or leave the baffle 1113 to conduct the chamber 1111 and the annular cavity 1112, thereby conducting the water inlet 1121 and the water outlet 1131. When the valve element 12 abuts against the baffle 1113, the first mounting portion 114 and the water inlet 112 are connected to each other through the annular cavity 1112, so that the buffer mechanism 13 can buffer the impact of water flow on the pipe network.

[0047] In some embodiments, when the valve element 12 is a solenoid valve, the valve element 12 may include an electromagnet 121, a connector 122, a valve core 123, and a spring element 124. The electromagnet 121 is connected to the valve core 123 via the connector 122, and the spring element 124 is disposed on the side of the valve core 123 facing the electromagnet 121. For a normally closed solenoid valve, in a non-powered state, due to the force of the spring element 124, the valve core 123 always abuts against the baffle 1113 to block the annular cavity 1112 and the chamber 1111. When the electromagnet 121 is powered on, the valve core 123 is driven to leave the baffle 1113 through the connector 122, thereby connecting the annular cavity 1112 and the chamber 1111. When the electromagnet 121 is powered off, under the elastic recovery force of the spring element 124, the valve core 123 abuts against the baffle 1113 again. Of course, the valve element 12 can also be a normally closed solenoid valve or any other suitable switch valve, as long as it can block or connect the annular cavity 1112 and the chamber 1111. The specific setting can be designed according to the switching requirements and will not be elaborated in this application.

[0048] Please refer to FIG. 2 and FIG. 3 again. In some embodiments, the valve body 11 further includes a second mounting portion 115 disposed on the main body 111 and an anti-siphon mechanism disposed on the second mounting portion 115. The second mounting portion 115 is provided with a through hole 1151 communicating with the water inlet 1121. The through hole 1151 can communicate with the annular cavity 1112, so that the through hole 1151 can communicate with the water inlet 1121 through the annular cavity 1112 when the water inlet valve 10 is opened or closed. The anti-siphon mechanism includes a vent structure 14 and a blocking structure 15. The vent structure 14 is provided with a vent hole 141 communicating with the through hole 1151 and the outside. The blocking structure 15 is disposed between the vent structure 14 and the through hole 1151. The blocking structure 15 can move toward the vent structure 14 to block the vent hole 141, or move toward the direction away from the vent structure 14 to connect the through hole 1151 and the vent hole 141. For example, the blocking structure 15 may include a breathable portion 151 and a blocking column 152 connected to the breathable portion 151 on the side facing the ventilation structure 14. When the blocking structure 15 abuts against the ventilation structure 14, the blocking column 152 is inserted into the vent 141 to block the vent 141. When the blocking structure 15 leaves the ventilation structure 14, the breathable portion 151 is provided with a groove 1511 along the circumferential side. There is a gap between the breathable portion 151 and the inner wall of the second mounting portion 115. The vent 141 and the through hole 1151 are connected through the gap between the breathable portion 151 and the second mounting portion 115 and the groove 1511.

[0049] It is understandable that when the annular groove is filled with water, the water will exert a force on the air-permeable portion 151, so that the air-permeable portion 151 abuts against the ventilation structure 14, and the blocking column 152 blocks the vent 141 to prevent water from leaking out of the ventilation structure 14. When the pressure in the annular groove is reduced to form a negative pressure due to water outage, the blocking structure 15 is sucked away from the ventilation structure 14 due to the negative pressure, so that the blocking column 152 releases the vent 141, and the outside air enters the annular cavity 1112 through the vent 141, the gap between the air-permeable portion 151 and the inner wall of the second mounting portion 115, and the groove 1511, replenishing the air pressure in the annular cavity 1112, which can prevent the negative pressure of the annular groove from sucking back the water in the pipe network, and realize the anti-back-sucking function of the water inlet valve 10.

[0050] Referring to FIG. 2 , in some embodiments, the water inlet valve 10 further includes a noise reduction head 16, and the noise reduction head 16 is provided with a diverter net 162 including a plurality of diverter ports. The noise reduction head 16 is provided on the water outlet 113, and the diverter net 162 is opposite to the water outlet 1131. The diverter net 162 can be formed as a mesh structure provided with a plurality of net ports distributed in an array. Diverting water through the plurality of net ports of the diverter net 162 can reduce the noise generated by the water flow, thereby playing a noise reduction role. In the embodiment shown in FIG. 2 , the noise reduction head 16 includes a sleeve structure 161 sleeved on the water outlet 113 and two diverter nets 162, wherein one diverter net 162 is fixed to the end of the sleeve structure 161, and the other diverter net 162 is provided between the sleeve structure 161 and the water outlet 1131, and a good noise reduction effect is achieved through two layers of diversion.

[0051] Of course, the buffer mechanism 13 may be arranged in other ways in the valve body 11. As shown in FIG. 5 and FIG. 6, in some embodiments, the base 131 is arranged in the water inlet 112, the blocking element 132 is arranged in the base 131, the blocking element 132 is slidably connected to the base 131 and sealed with the base 131, and the elastic element 133 is arranged in the sealed space formed between the base 131 and the blocking element 132. The blocking element 132 and the elastic element 133 are arranged in the base 131, and the sealed space formed by the blocking element 132 and the base 131 can prevent water from flowing into the space where the elastic element 133 is located, so as to avoid the water flow affecting the buffering effect of the buffer mechanism 13. Based on this, the buffer mechanism 13 can be arranged in the water inlet 112, so that the valve body 11 does not need to be provided with an additional installation part to accommodate the buffer mechanism 13. While achieving the buffering effect, it is also beneficial to compress the volume of the valve body 11, so that the water inlet valve 10 can better adapt to the spatial layout of the toilet.

[0052] Further, in combination with FIG. 6, FIG. 7 and FIG. 8, in some embodiments, the base 131 includes a bottom wall 1312 and a side wall 1313, and the side wall 1313 is arranged around the periphery of the bottom wall 1312 and connected to the bottom wall 1312. In other words, the base 131 is roughly in the shape of a hollow cylinder with one side open. The blocking element 132 is slidably connected to the side wall 1313 and is sealed with the side wall 1313. For example, a sealing structure 136 such as a sealing ring is provided between the blocking element 132 and the side wall 1313 to achieve a sealed connection between the blocking element 132 and the side wall 1313. The elastic element 133 is arranged between the blocking element 132 and the bottom wall 1312, and the side of the blocking element 132 facing away from the elastic element 133 is surrounded by the side wall 1313 to form a first space 134. The side wall 1313 is spaced from the inner wall of the water inlet 112 to form a second space 135 connected to the water inlet 1121, and the side wall 1313 is provided with a through hole 1314 connected to the first space 134 and the second space 135. It can be understood that when the water inlet valve 10 is opened, water from an external water source such as a pipe network flows from the water inlet 1121 through the second space 135, the through hole 1314 and the first space 134 in sequence into the annular cavity 1112, and then flows to the water outlet 1131 through the chamber 1111. When the water inlet valve 10 is closed, due to the water hammer effect, the water flow in the first space 134 exerts a force on the blocking element 132, so that the blocking element 132 moves toward the direction close to the bottom wall 1312 to compress the elastic element 133, thereby buffering the impact force generated by the water hammer effect. The arrangement of the second space 135 and the through hole 1314 allows the buffer mechanism 13 to be integrated into the water inlet portion 112 without affecting the water inlet of the water inlet portion 112 , thereby making full use of the space of the water inlet valve 10 , improving space utilization, and compressing the volume of the water inlet valve 10 .

[0053] In some embodiments, the buffer mechanism 13 also includes a limiting structure 137, which is disposed at one end of the side wall 1313 away from the bottom wall 1312 and is at least partially located in the first space 134. The limiting structure 137 is hollow and has a limiting surface 1371 facing the blocking element 132. The limiting surface 1371 is used to abut the blocking element 132, and the distance between the limiting surface 1371 and the bottom wall 1312 is less than or equal to the distance between the through hole 1314 and the bottom wall 1312. The water in the second space 135 can flow into the annular cavity 1112 from the hollow space of the limiting structure 137 through the through hole 1314 to achieve water inflow. At the same time, the limiting surface 1371 of the limiting structure 137 can abut the blocking element 132 to limit the maximum distance between the blocking element 132 and the bottom wall 1312, that is, to limit the maximum movement stroke of the blocking element 132 in the base 131, to prevent the blocking element 132 from moving to the through hole 1314 to affect the water inlet part 112 or cause water to flow into the sealed space between the blocking element 132 and the bottom wall 1312.

[0054] In some embodiments, the circumferential side of the limiting structure 137 may be provided with a snap-fitting portion 1372 that can be snapped into the through hole 1314, so as to realize the relative fixation of the limiting structure 137 and the side wall 1313 by utilizing the through hole 1314, and a gap is reserved between the snap-fitting portion 1372 and the through hole 1314 so that the water in the second space 135 can flow into the first space 134 through the gap between the snap-fitting portion 1372 and the through hole 1314 to realize water inflow. The buffer mechanism 13 with the above-mentioned design can be integrated into the water inlet portion 112 without affecting the water inflow of the water inlet portion 112, and the water flow will not flow into the sealed space between the blocking element 132 and the bottom wall 1312 to affect the buffering effect, which can improve the space utilization efficiency and structural reliability of the water inlet valve 10. It can be understood that, in the embodiment shown in FIG. 6 , when installing the buffer mechanism 13, the elastic element 133, the blocking element 132 and the limiting element can be installed on the base 131 in sequence first, and then the buffer mechanism 13 can be installed as a whole into the installation part from the water inlet 1121. The buffer mechanism 13 is integrated into an independent module through the base 131, which makes installation and maintenance more convenient.

[0055] It should be noted that, in the embodiment shown in FIG. 3 , the axial direction of the elastic element 133 may be parallel to the axial direction of the first mounting portion 114, and in the embodiment shown in FIG. 6 , the axial direction of the elastic element 133 may be parallel to the axial direction of the base 131 or the axial direction of the water inlet 112. In the embodiment shown in FIG. 3 , the base 131 may also be in the shape of a hollow cylinder with a single-side opening toward the main body 111, and the blocking element 132 and the elastic element 133 may be arranged in the base 131. In the embodiment shown in FIG. 6 , the annular cavity 1112, the chamber 1111, the second mounting portion 115, the water outlet 113 and other parts of the valve body 11, as well as the valve element 12, the anti-siphon mechanism and the noise reduction head 16 of the water inlet 112 may also be arranged the same as the embodiment shown in FIG. 3 , and the only difference may be that the first mounting portion 114 is omitted and the buffer mechanism 13 is integrated into the water inlet 112. The arrangement of other components in the embodiment shown in FIG. 6 may be obtained by referring to the above description, and will not be repeated here. Of course, the configuration of the water inlet valve 10 is not limited to the description of the present application, and the water inlet valve 10 may also include other components to achieve richer functions, and the above-mentioned components may also be replaced by other components to achieve corresponding effects, as long as the buffer mechanism 13 of the water inlet valve 10 can buffer the impact force generated by the water hammer effect to reduce the impact of the water hammer effect on external water sources such as pipelines.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A water inlet valve for buffering water hammer effect, characterized in that: The water inlet valve comprises: A valve body is provided with a water inlet and a water outlet which are interconnected; a valve element, which is disposed on the valve body and is capable of blocking or connecting the water inlet and the water outlet; and, A buffer mechanism is arranged on the valve body and includes a base, a blocking element and an elastic element. The elastic element is arranged between the base and the blocking element. Both ends of the elastic element are in contact with the blocking element and the base respectively. The blocking element can move relative to the valve body in the axial direction of the elastic element. The buffer mechanism forms a first space located on the side of the blocking element facing away from the elastic element, and the first space is connected to the water inlet.

2. The water inlet valve according to claim 1, characterized in that: The valve body includes a main body, a water inlet portion and a first mounting portion arranged on the main body, the water inlet is arranged at the water inlet, the main body is provided with a chamber connected to the water inlet, the first mounting portion is connected to the chamber, and the buffer mechanism is arranged at the first mounting portion.

3. The water inlet valve according to claim 2, characterized in that: The water inlet portion and the first mounting portion are respectively connected to two opposite sides of the main body, and the blocking element is located on a side of the elastic element facing the water inlet portion; and / or, The main body is provided with an annular cavity which is arranged around the chamber and connected to the chamber, the water inlet and the first mounting portion are both connected to the annular cavity, the main body is provided with a baffle which separates the chamber and the annular cavity, and the valve element can abut against the baffle to block the chamber and the annular cavity, or leave the baffle to connect the chamber and the annular cavity.

4. The water inlet valve according to claim 2, characterized in that: The first mounting portion has an opening on one side away from the main body, and the base is provided at an end of the first mounting portion and blocks the opening; And / or, the base is provided with a vent hole connecting the first mounting portion and the outside; And / or, the blocking element is slidably disposed in the first mounting portion, and the buffer mechanism further comprises a sealing structure, which is embedded in the peripheral side surface of the blocking element and is located between the blocking element and the first mounting portion to seal the gap between the blocking element and the first mounting portion.

5. The water inlet valve according to claim 1, characterized in that: The base is arranged in the valve body, the blocking element is arranged in the base, the blocking element is slidably connected to the base and is sealed with the base, and the elastic element is arranged in a sealed space formed by the base and the blocking element.

6. The water inlet valve according to claim 5, characterized in that: The base includes a bottom wall and a side wall, the side wall surrounds the periphery of the bottom wall and is connected to the bottom wall, the elastic element is arranged between the blocking element and the bottom wall, the blocking element is slidably connected to the side wall and is sealed with the side wall, and the side wall and the blocking element enclose and form the first space.

7. The water inlet valve according to claim 6, characterized in that: The valve body comprises a main body and a water inlet provided on the main body, the water inlet is provided on the water inlet, the main body is provided with a chamber connected to the water outlet, the base is provided in the water inlet, the first space is connected to the chamber, the side wall is spaced from the inner wall of the water inlet to form a second space connected to the water inlet, and the side wall is provided with a through hole connected to the first space and the second space; The buffer mechanism also includes a limiting structure, which is arranged at one end of the side wall away from the bottom wall and is at least partially located in the first space. The limiting structure is hollow and has a limiting surface facing the blocking element. The limiting surface is used to abut the blocking element, and the distance between the limiting surface and the bottom wall is less than or equal to the distance between the through hole and the bottom wall.

8. The water inlet valve according to any one of claims 1 to 7, characterized in that: The blocking element includes a block portion and a protrusion provided on the side of the block portion facing the elastic element, and the end of the elastic element is sleeved on the protrusion; a recess connected to the first space is provided on the side of the block portion facing away from the elastic element, and the protrusion is a hollow structure.

9. The water inlet valve according to any one of claims 1 to 7, characterized in that: The valve body comprises a main body and a second mounting portion arranged on the main body, the main body is provided with a cavity connected to the water inlet, the second mounting portion is provided with a through hole connected to the water inlet, the water inlet valve further comprises a ventilation structure and a blocking structure arranged on the second mounting portion, the ventilation structure is provided with a ventilation hole connected to the through hole and the outside, the blocking structure can move in a direction close to the ventilation structure to block the ventilation hole, or move in a direction away from the ventilation structure to connect the through hole and the ventilation hole; And / or, the valve body includes a main body and a water outlet portion arranged on the main body, the water outlet is arranged on the water outlet, the main body is provided with a cavity connecting the water inlet and the water outlet, the water inlet valve also includes a noise reduction head, the noise reduction head is provided with a diversion network including multiple diversion ports, the noise reduction head is arranged on the water outlet, and the diversion network is opposite to the water outlet.

10. A toilet, characterized in that: It comprises a water inlet valve as described in any one of claims 1 to 9.

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