Induction flushing valve with handle

Abstract

The utility model relates to an induction flushing valve with a handle. The induction flushing valve comprises a valve body, a lower valve seat, a valve element mechanism, an inner valve element, a reset spring, an inner valve element ejector rod, the flushing handle and an electromagnetic valve mechanism. The valve element mechanism is provided with an upper sealing piece and a lower sealing piece, an inner cavity and an inner water passing opening are formed in the valve element mechanism, and the inner valve element is used for sealing the inner water passing opening in the inner cavity. A valve element upper cavity above the valve element mechanism is communicated with the water inlet through an upper cavity water inlet and communicated with the inner cavity through an inner cavity water inlet, and the side wall of the valve body is provided with an electric control water outlet channel communicated with the valve element upper cavity and the water outlet. The flushing handle pushes the inner valve element ejector rod to enable the inner valve element to incline, and the inner water passing opening is opened for pressure relief. The electromagnetic valve mechanism controls the electric control water outlet channel to be opened for pressure relief. After pressure relief, the water pressure of the upper cavity of the valve element is reduced, the valve element mechanism floats upwards to separate the lower sealing piece from the lower valve seat, the main water passing opening is opened for flushing, and then delayed closing is achieved through water replenishing of the water inlet of the upper cavity. The device has manual and inductive dual-mode control functions, and is compact in structure and reliable to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flushing valve technical field, especially a kind of inductive handle flushing valve. BACKGROUND

[0002] At present, flushing valve applied in public place or family toilet is mainly divided into two categories: one is pure mechanical flushing valve, such as delay self-closing or hand pressing flushing valve.This kind of valve is directly or indirectly (such as using pressure difference principle) pushed by mechanical structure to push valve core to open, to realize flushing by manually pressing handle.Its advantages are reliable structure, lower cost, and not dependent on external power supply.However, its shortcomings are also obvious: user must directly contact handle, in public toilet and other crowded places, it is easy to cause cross infection, and the sanitary property is poor;At the same time, for some people with difficulty in movement or children, pressing operation can be more laborious, and there is the situation of forgetting to flush.

[0003] Another kind is inductive automatic flushing valve, which detects human body signal through infrared sensor, and automatically controls electromagnetic valve action to open and close water flow.The biggest advantage of this kind of valve is completely non-contact operation, greatly improves sanitary level, and is convenient to use.However, pure inductive flushing valve completely depends on power supply and electronic element, once power failure, sensor failure or electromagnetic valve damage, the whole flushing valve will be completely invalid, and cannot flush, and the reliability is insufficient.

[0004] Therefore, in the prior art, whether pure mechanical or pure inductive, it is difficult to ensure the operation of sanitary property while considering the reliability of manual operation.How to design a kind of flushing valve which can realize convenient, sanitary automatic induction flushing, and can flush through simple and reliable manual mode when electronic system fails, and the two do not interfere with each other, and the structure is compact, is the technical problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of inductive handle flushing valve, which realizes the independent, reliable control of induction and handle two modes, meets the sanitary demand of non-contact use, provides reliable backup for manual flushing, significantly improves the practicability and adaptability of product.Solve the above problems existing in the prior art in use process.

[0006] The utility model discloses a technical scheme is such realization: a kind of induction zone handle flush valve, including valve body, the water inlet is opened in the lateral wall of valve body, the water outlet is opened in the lower end of valve body, the lower valve seat of being located in the lower side of water inlet is fixed in valve body, the water passage is opened in the lower valve seat, the valve core mechanism is movably cooperated in valve body, the valve core mechanism includes outer valve core assembly and inner valve core, the lower sealing element for being located in the upper side of lower valve seat and being used to seal water passage is included in outer valve core assembly, the upper sealing element for being used to form the movable seal with the inner lateral wall of valve body in the upper side of water inlet, the inner cavity and the inner water passage that pass through to water outlet to inner cavity bottom are formed in the inside of outer valve core assembly, the inner valve core is movably cooperated in inner cavity and is used to form sealing to inner water passage, reset spring for being used to press down and hold on the inner valve core is equipped in the inner cavity, the inner valve core top rod that extends to the lower side of lower valve seat is connected on the inner valve core, flush handle for pushing inner valve core top rod is equipped on valve body, the valve core upper cavity that is located in the upper side of valve core assembly is formed in valve body, the upper cavity water inlet for being used to connect water inlet and valve core upper cavity is opened in the inner of valve core assembly, the inner cavity water inlet that is connected to valve core upper cavity and passes to inner cavity is also opened in the inner of valve core assembly, the electric control water outlet channel that is connected valve core upper cavity and water outlet is opened in the lateral wall of valve body, the solenoid valve mechanism for controlling the opening and closure of electric control water outlet channel is equipped on the upper side of valve core mechanism in valve body.

[0007] Preferably, the solenoid valve mechanism includes an upper valve seat and a solenoid valve, the upper valve seat is fixed in the valve body and located on the upper side of the valve core mechanism, the upper valve seat is opened to connect the valve core upper cavity and the electric control water outlet channel, the solenoid valve is fixed on the valve body and located above the upper valve seat, the solenoid valve has a solenoid valve core for sealing the upper valve water passage.

[0008] Preferably, the outer lateral wall of the upper valve seat is opened to form an outer ring groove, the inner ring groove is opened on the upper valve seat and located on the outer side of the upper valve water passage, the upper valve water pipe is included in the inner ring groove of the upper valve seat, the upper valve water passage is located in the upper valve water pipe, the upper valve seat is connected with a communication hole between the inner ring groove and the outer ring groove, the outer ring groove is connected with the electric control water outlet channel, and the solenoid valve core is located on the upper side of the upper valve water pipe.

[0009] Preferably, the lower end of the upper valve water passage is closed, and the lateral wall water inlet is opened in the lower end of the upper valve water passage of the upper valve seat.

[0010] Preferably, the outer valve core assembly comprises an outer valve core base, an outer valve core upper seat, and an outer valve core lower seat, the outer valve core lower seat is screwed at the lower end of the outer valve core base, the lower sealing member is clamped between the outer valve core base and the outer valve core lower seat, the outer valve core upper seat is screwed at the upper end of the outer valve core base, the upper sealing member is clamped outside the outer valve core upper seat, the inner cavity is located between the outer valve core base and the outer valve core upper seat, the inner cavity bottom is provided with an inner water passing sealing member clamped between the outer valve core base and the outer valve core upper seat, and the inner valve core is used for forming abutting sealing with the inner water passing sealing member.

[0011] Preferably, the upper cavity water inlet penetrates from the side wall of the outer valve core upper seat and penetrates out of the outer valve core upper seat upwards, and the upper end of the upper cavity water inlet is screwed with an upper cavity water inlet seat, and a fine diameter hole is formed in the upper cavity water inlet seat.

[0012] Preferably, a conical spring is arranged on the upper cavity water inlet seat, the lower end of the conical spring is clamped on the upper cavity water inlet seat, and the upper end of the conical spring extends out of the upper cavity water inlet seat.

[0013] In summary, the beneficial effects of the utility model lie in:

[0014] 1. When in use, water enters through the water inlet and enters the valve core upper cavity through the upper cavity water inlet, at this time, water pressure is formed in the valve core upper cavity, thereby pressing the valve core mechanism downwards, the lower sealing member and the lower valve seat form sealing to the water passing hole, the valve core upper cavity and the inner cavity are communicated through the inner cavity water inlet, and the inner valve core in the inner cavity forms sealing to the inner water passing hole under the action of the reset spring. When flushing is performed by using the flushing handle, the flushing handle is pressed down, the flushing handle is pressed to the valve core top rod, the valve core top rod drives the inner valve core to tilt, thereby making the inner valve core lose the sealing to the inner water passing hole, after the sealing is opened, the water in the inner cavity and the valve core upper cavity is discharged through the inner water passing hole, thereby rapidly reducing the water pressure in the valve core upper cavity, promoting the entire valve core mechanism to float upwards, after the valve core mechanism floats upwards, the sealing of the lower sealing member and the lower valve seat to the water passing hole is opened, a large amount of water is discharged from the water passing hole, and the valve core mechanism floats upwards, at the same time, water continuously enters the valve core upper cavity through the upper cavity water inlet, thereby increasing the water pressure in the valve core upper cavity, thereby pressing the valve core mechanism downwards again to form sealing, and one flushing cycle is completed.

[0015] And in the control by solenoid valve mechanism, the person is in the induction, uses the induction switch, when the person leaves, the induction switch drives the solenoid valve to open, and the solenoid valve opens the seal formed by the water passage of upper valve, and the water in the upper cavity of valve core enters the water outlet from the electrically-controlled water outlet channel through the water passage of upper valve, so that the water pressure in the upper cavity of valve core is rapidly reduced, so that the whole valve core mechanism floats up, and the lower sealing element is opened to form a seal with the water passage of lower valve seat, and a large amount of water is discharged from the water passage, washes the dirt, and after the solenoid valve is automatically closed, water cannot pass through here, and the water flowing out of the upper cavity of valve core accumulates more and more, and pressure is reformed, so that the valve core mechanism is pressed downward, so that the water passage is in a sealed state again, and the valve core stops water outlet, and a water outlet cycle is completed.

[0016] The utility model discloses a flush handle (mechanical trigger) for pushing the inner valve core top rod and the solenoid valve mechanism (electric control trigger) for controlling the opening and closing of the electrically-controlled water outlet channel are simultaneously arranged, so that the organic integration of two flush modes of manual and induction is realized. The user can select any mode according to needs or environment, which not only meets the requirements of non-contact and high sanitary standard in public places (induction mode), but also provides a reliable manual flush scheme (handle mode) in extreme conditions such as power failure and induction element failure, thereby greatly improving the adaptability and reliability of the product.

[0017] 2. The utility model discloses the water pressure of water inlet is used to establish pressure in the upper cavity of valve core through the upper cavity inlet, and is combined with the structure such as inner cavity, inner water passage, reset spring to form the stable upper and lower floating mechanism of valve core mechanism. Whether it is through the handle to tilt the inner valve core and release pressure or through the solenoid valve and release pressure, can reliably break the static pressure balance of the upper cavity of valve core, make the valve core mechanism float up quickly, open the main water passage and carry out high -flow flush. Subsequently, the automatic delay closing is realized through the water replenishment of upper cavity inlet, and the integrity and stability of each flush are ensured. This integrated design avoids setting two complete water channel for two control modes, so that the internal structure of valve body is compact, small in size, easy to install and maintain. ACCURACY OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the sectional structure schematic diagram of the utility model;

[0021] Figure 3 is Figure 2 a local enlarged view of A in the middle;

[0022] Figure 4 is a perspective view of the valve core mechanism in the utility model;

[0023] Figure 5 is Figure 4 a structural schematic view when observed from another angle;

[0024] Figure 6 is a perspective view of the upper valve seat in the utility model;

[0025] Figure 7 is Figure 6 a structural schematic view when observed from another angle.

[0026] In the figure: 1, valve body; 11, water inlet; 12, water outlet; 13, electric control water outlet channel; 14, valve core upper cavity; 2, lower valve seat; 21, water passage; 3, outer valve core assembly; 31, lower sealing element; 32, upper sealing element; 33, outer valve core base; 331, inner water passage; 332, outer valve core lower seat body; 34, outer valve core upper seat body; 341, upper cavity water inlet; 342, inner cavity water inlet; 35, inner water passage sealing element; 36, inner cavity; 41, inner valve core; 42, return spring; 43, inner valve core top rod; 44, flushing handle; 5, upper valve seat; 51, upper valve water passage; 52, upper valve water passage; 53, outer ring groove; 54, inner ring groove; 55, communication hole; 56, side wall water inlet; 6, electromagnetic valve; 61, electromagnetic valve core; 7, upper cavity water inlet seat; 71, thin diameter port; 8, conical spring. DETAILED DESCRIPTION

[0027] The utility model embodiments will be described below with reference to the accompanying drawings. Figures 1-7 The technical solutions in the embodiments of the utility model are clearly and completely described, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model protection.

[0028] Embodiment:

[0029] As Figures 1 to 7The utility model discloses an inductive handle flush valve which can realize the water flushing function independently and reliably in two modes of manual operation and induction control, and is especially suitable for public washroom or high-end residence with high hygiene and reliability requirements. The inductive handle flush valve comprises a valve body 1 in a cylindrical shape. A water inlet 11 for connecting a water supply pipeline is formed on the side wall of the valve body 1, and a water outlet 12 for connecting a toilet flushing pipeline is formed at the lower end of the valve body 1. The valve body 1 is hollow inside to form a chamber for accommodating various functional components.

[0030] A lower valve seat 2 is integrally formed in the valve body 1. The lower valve seat 2 is located at the lower side of the water inlet 11, and a water passage 21 is formed in the center of the lower valve seat 2, which serves as a passage for the main flushing water flow. Under normal circumstances, the water passage 21 is sealed, and it is opened during flushing.

[0031] A valve core mechanism is movably fitted in the valve body 1, which can move up and down along the axial direction of the valve body 1. The valve core mechanism comprises an outer valve core assembly 3 and an inner valve core 41. The outer valve core assembly 3 is provided with a lower sealing member 31 and an upper sealing member 32. The lower sealing member 31 is located above the lower valve seat 2 and is used to form a seal with the water passage 21 of the lower valve seat 2. The upper sealing member 32 is located at the upper side of the water inlet 11 and forms a movable seal with the inner side wall of the valve body 1, that is, when the valve core mechanism moves up and down, the upper sealing member 32 always adheres to the inner wall of the valve body 1, dividing the inside of the valve body 1 into two chambers.

[0032] The inner cavity 36 of the outer valve core assembly 3 has an inner water passage 331 that penetrates to the water outlet 12 of the valve body 1 at the bottom of the inner cavity 36. The inner valve core 41 is movably fitted in the inner cavity 36 and is used to seal the inner water passage 331. A return spring 42 is arranged in the inner cavity 36 and presses downward on the inner valve core 41, so that the inner valve core 41 always maintains a closed state of the inner water passage 331 without external force. An inner valve core top rod 43 is connected to the inner valve core 41 and extends downward and penetrates through the lower valve seat 2 to finally reach below the lower valve seat 2. A flushing handle 44 is installed on the valve body 1, and the inner end of the flushing handle 44 is arranged opposite to the lower end of the inner valve core top rod 43. When the user presses the flushing handle 44, the inner end of the handle will push the inner valve core top rod 43, thereby driving the inner valve core 41 to tilt, temporarily releasing the seal of the inner valve core 41 on the inner water passage 331.

[0033] The space above the valve core mechanism in the valve body 1 is defined as the upper chamber 14 of the valve core. In order to realize the pressure difference driving of the valve core mechanism, the upper chamber inlet 341 and the inner chamber inlet 342 are arranged in the valve core assembly. The upper chamber inlet 341 is used to connect the water inlet 11 and the upper chamber 14 of the valve core, so that the water at the water inlet 11 can slowly enter the upper chamber 14 of the valve core. The inner chamber inlet 342 is used to connect the upper chamber 14 of the valve core and the inner chamber of the outer valve core assembly 3, so that the water in the upper chamber 14 of the valve core can enter the inner chamber.

[0034] An electrically controlled water outlet channel 13 is also arranged on the side wall of the valve body 1, which is used to connect the upper chamber 14 of the valve core and the water outlet 12 at the lower end of the valve body 1. The valve body 1 is provided with an electromagnetic valve mechanism on the upper side of the valve core mechanism for controlling the opening and closing of the electrically controlled water outlet channel 13. When the electromagnetic valve mechanism opens the electrically controlled water outlet channel 13, the water in the upper chamber 14 of the valve core can directly flow to the water outlet 12 through the channel, thereby rapidly reducing the water pressure in the upper chamber 14 of the valve core.

[0035] Specifically, the electromagnetic valve mechanism includes an upper valve seat 5 and an electromagnetic valve 6. The upper valve seat 5 is fixedly installed in the valve body 1 and located above the valve core mechanism. The upper valve seat 5 is provided with an upper valve water passage 52, which connects the upper chamber 14 of the valve core and the electrically controlled water outlet channel 13. The electromagnetic valve 6 is fixedly installed on the valve body 1 and located above the upper valve seat 5. The electromagnetic valve 6 has a retractable electromagnetic valve core 61, which is opposite to the upper valve water passage 52 and is used to block the upper valve water passage 52 when the electromagnetic valve 6 is powered off, and is retracted upward when the electromagnetic valve 6 is powered on, thereby opening the upper valve water passage 52. In this way, by powering on and powering off the electromagnetic valve 6, it can be accurately controlled whether the upper chamber 14 of the valve core is relieved through the electrically controlled water outlet channel 13.

[0036] In order to further optimize the water flow channel and improve the sealing reliability, an outer ring groove 53 is arranged on the outer side wall of the upper valve seat 5, and an inner ring groove 54 is also arranged on the upper valve seat 5 and located outside the upper valve water passage 52. The inner part of the upper valve seat 5 includes an upper valve water pipe 51 located in the inner ring groove 54, and the upper valve water passage 52 is arranged at the center of the upper valve water pipe 51. The upper valve seat 5 is connected with a communication hole 55 between the inner ring groove 54 and the outer ring groove 53. After installation, the outer ring groove 53 is connected with the electrically controlled water outlet channel 13 on the side wall of the valve body 1. The electromagnetic valve core 61 is located on the upper side of the upper valve water pipe 51 and directly seals the upper end of the upper valve water passage 52. When the electromagnetic valve core 61 is opened, the water in the upper chamber 14 of the valve core passes through the upper valve water passage 52, the inner ring groove 54, the communication hole 55, the outer ring groove 53, and finally enters the electrically controlled water outlet channel 13. This design is reasonable and reliable, the electromagnetic valve 6 can directly control the electromagnetic valve core 61 to seal and open the upper valve water passage 52, and in addition, the water flow is turned several times before entering the electrically controlled water outlet channel 13, which is beneficial to buffer the water pressure.

[0037] Further, the lower end of the upper valve water passage 52 is closed, i.e. the water passage 21 is not a straight hole penetrating from top to bottom, but is closed at the lower end and has a side wall water inlet 56 formed in the side wall of the lower end of the upper valve water pipe 51. In this way, water in the valve core upper cavity 14 must enter from the side wall water inlet 56 and then flow upward through the upper valve water passage 52 to reach the electromagnetic valve core 61. This side water inlet mode can effectively prevent the particulate impurities in the water from directly hitting the sealing surface of the electromagnetic valve core 61, thereby preventing the electromagnetic valve 6 from being closed tightly or damaged due to impurities being stuck, and significantly improving the working stability and service life of the electromagnetic valve 6 under complex water quality.

[0038] The specific structure of the outer valve core assembly 3 includes an outer valve core base 33, an outer valve core upper seat 34, and an outer valve core lower seat 332. The outer valve core lower seat 332 is screwed to the lower end of the outer valve core base 33, and the lower sealing member 31 is clamped and fixed between the outer valve core base 33 and the outer valve core lower seat 332 to form a reliable sealing structure. The outer valve core upper seat 34 is screwed to the upper end of the outer valve core base 33, and the upper sealing member 32 is clamped to the outer side of the outer valve core upper seat 34. The inner cavity 36 is located between the outer valve core base 33 and the outer valve core upper seat 34, and the bottom of the inner cavity 36 is provided with an inner water passage sealing member 35 clamped between the outer valve core base 33 and the outer valve core upper seat 34. The central hole of the inner water passage sealing member 35 is the inner water passage 331. The inner valve core 41 is used to abut against the inner water passage sealing member 35 to form a seal. This split-type threaded assembly structure not only facilitates machining and assembly, but also facilitates individual replacement of the sealing member later, reducing maintenance costs.

[0039] In order to accurately control the water replenishment speed of the valve core upper cavity 14 and thereby adjust the water discharge amount and duration of each flush, the upper cavity water inlet 341 is specifically designed as follows: the upper cavity water inlet 341 penetrates from the side wall of the outer valve core upper seat 34 and penetrates through the upper end surface of the outer valve core upper seat 34. A separate upper cavity water inlet seat 7 is threadedly connected to the upper end of the upper cavity water inlet 341, and a fine diameter port 71 is formed in the center of the upper cavity water inlet seat 7. The inner diameter of the fine diameter port 71 is much smaller than the inner diameter of the upper cavity water inlet 341 itself. In this way, after water enters the upper cavity water inlet 341 from the water inlet 11, it can only slowly enter the valve core upper cavity 14 through this fine diameter port 71. The size of the fine diameter port 71 determines the time required for the valve core upper cavity 14 to be refilled with water, i.e. the delay time from the upper floating opening of the valve core mechanism to the re-falling closing. By replacing the upper cavity water inlet seat 7 with different inner diameters, the flush volume can be easily adjusted to adapt to different water pressures and types of toilet bowls.

[0040] In addition, a conical spring 8 is arranged on the upper chamber inlet seat 7. The lower end of the conical spring 8 is clamped and fixed on the upper chamber inlet seat 7, and the upper end of the conical spring 8 extends out of the upper chamber inlet seat 7 upward. When the valve core mechanism is floated upward under the action of water pressure, the upper end of the conical spring 8 will first contact the lower end surface of the upper valve seat 5. With the continuous floating of the valve core mechanism, the conical spring 8 is gradually compressed, which plays a buffering role, avoids the rigid collision between the outer valve core assembly 3 and the upper valve seat 5, thereby effectively reducing the impact noise when the valve core acts, and reducing the wear of parts. At the same time, the elastic potential energy stored after the compression of the conical spring 8 can also assist the downward reset of the valve core mechanism when needed, improving the reliability of the action.

[0041] The working process of the induction belt handle flush valve of the present application will be described in detail below.

[0042] In the non-flushing state, that is, the electromagnetic valve 6 is in the power-off closed state and the flush handle 44 is not pressed, water enters the valve body 1 from the water inlet 11. Part of the water slowly enters the valve core upper chamber 14 through the upper chamber water inlet 341 and the fine diameter port 71. Since the electrically controlled water outlet channel 13 is closed by the electromagnetic valve core 61, the water in the valve core upper chamber 14 cannot be discharged, and the pressure gradually rises. At the same time, the water in the valve core upper chamber 14 also enters the inner chamber 36 of the outer valve core assembly 3 through the inner chamber water inlet 342. In the inner chamber 36, the reset spring 42 presses the inner valve core 41 downward, so that the inner valve core 41 tightly abuts against the inner water passing sealing element 35 to seal the inner water passing port 331. Therefore, the water in the inner chamber 36 also cannot be discharged through the inner water passing port 331. At this time, the valve core upper chamber 14 and the inner chamber are filled with high-pressure water, which acts on the upper end surface of the outer valve core assembly 3, generates a downward pressure, and cooperates with the elastic force of the reset spring 42 to keep the entire valve core mechanism in the lower closed position. In this position, the lower sealing element 31 tightly abuts against the lower valve seat 2 and seals the water passing port 21, so that the water inlet 11 cannot flow to the water outlet 12 through the water passing port 21, and the flush valve is in the closed state.

[0043] When the user wishes to flush manually, he simply presses the flush handle 44. The inner end of the flush handle 44 pushes the inner valve core top rod 43 upward, which in turn tilts the inner valve core 41 against the force of the return spring 42, so that the inner valve core 41 temporarily leaves the inner water passage seal 35, and the inner water passage 331 is opened. At this time, the high pressure water in the inner cavity 36 and the valve core upper cavity 14 will quickly flow downward through the inner water passage 331 to the water outlet 12 of the valve body 1. Because the flow area of the inner water passage 331 is much larger than the diameter of the small-diameter port 71 of the upper cavity water inlet 341, the water pressure in the valve core upper cavity 14 will drop sharply. The water pressure acting on the upper end surface of the valve core mechanism decreases, and the high pressure water at the water inlet 11 acts on the annular area below the lower seal 31, generating an upward net thrust. When the upward thrust is greater than the downward force (including the weight of the valve core mechanism, the residual water pressure and the spring force), the valve core mechanism quickly floats upward. After the valve core mechanism floats upward, the lower seal 31 separates from the lower valve seat 2, and the water passage 21 is opened. A large amount of high pressure water at the water inlet 11 directly flows through the water passage 21 to the water outlet 12, achieving flushing of the toilet.

[0044] At the same time that the valve core mechanism floats upward, the conical spring 8 on the upper cavity water inlet seat 7 comes into contact with the upper valve seat 5, acting as a buffer. At the same time, water still slowly flows into the valve core upper cavity 14 through the small-diameter port 71 of the upper cavity water inlet 341. As the water replenishment proceeds, the water pressure in the valve core upper cavity 14 gradually rises, and when the downward thrust generated by the water pressure again exceeds the upward thrust, the valve core mechanism begins to fall downward, and eventually the lower seal 31 reseals the water passage 21, stopping the flushing. The size of the small-diameter port 71 determines the length of the water replenishment time, and thus determines the duration of the opening of the water passage 21, i.e. the amount of flushing.

[0045] When the user wants to adopt the induction automatic flushing, the handle does not need to be pressed. When the inductor detects that the human body leaves, the control system sends a short valve opening signal to the electromagnetic valve 6 (it needs to be indicated here that the inductor and the control system are prior art, and the structure and working principle are the common knowledge of those skilled in the art. The application does not improve this part, so the structure and principle are not described here). The electromagnetic valve 6 is powered, the electromagnetic valve spool 61 is retracted upward, and the upper valve water passage 52 is opened. At this time, the high-pressure water in the valve spool upper cavity 14 passes through the upper valve water passage 52, the inner ring groove 54, the communication hole 55, the outer ring groove 53, and then directly discharges to the water outlet 12 of the valve body 1 through the electrically controlled water outlet channel 13. This is different from the path of pressure relief through the inner water passage 331 when manually flushing, but the effect is the same: the water pressure in the valve spool upper cavity 14 rapidly decreases. Subsequently, the valve spool mechanism will also be floated upward due to the breaking of the force balance, and the water passage 21 is opened for flushing. The electromagnetic valve 6 is automatically powered off after a predetermined time (for example, 0.5 seconds), and the electromagnetic valve spool 61 falls to reseal the upper valve water passage 52. The valve spool upper cavity 14 is replenished through the fine diameter port 71, the pressure rises, the valve spool mechanism falls to close the water passage 21, and a induction flushing cycle is completed.

[0046] As can be seen, whether it is through the manual flushing handle 44 to trigger the inner valve spool 41 to release pressure or through the electromagnetic valve mechanism to trigger the upper valve water passage 52 to release pressure, ultimately it is through reducing the water pressure in the valve spool upper cavity 14 to drive the valve spool mechanism to float and open the main flushing water flow. The two control modes share the same main hydraulic drive system and do not interfere with each other, and are backups for each other. Even in the case that the electromagnetic valve 6 or the inductor is completely disabled, the user can still achieve normal flushing function by pressing the flushing handle 44, ensuring the reliability of the product.

[0047] At the same time, it needs to be pointed out that the terms such as "front", "rear", "vertical", "horizontal" and the like indicated by the directions or positional relationships based on the directions or positional relationships shown in the drawings are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the protection scope of the utility model.

[0048] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sensor-operated flushing valve with a handle, comprising a valve body, wherein a water inlet is provided on the side wall of the valve body, and a water outlet is provided at the lower end of the valve body, characterized in that: A lower valve seat is fixedly installed inside the valve body, located below the inlet. A water passage is provided on the lower valve seat. A valve core mechanism is movably fitted inside the valve body. The valve core mechanism includes an outer valve core assembly and an inner valve core. The outer valve core assembly includes a lower sealing element located above the lower valve seat for sealing the water passage, and an upper sealing element located above the inlet for forming a movable seal with the inner wall of the valve body. The outer valve core assembly has an inner cavity and an inner water passage extending from the bottom of the inner cavity to the outlet. The inner valve core is movably fitted within the inner cavity and seals the inner water passage. The inner cavity is provided with... A return spring is pressed down on the inner valve core. An inner valve core push rod extending to the lower valve seat is connected to the inner valve core. A flushing handle for pushing the inner valve core push rod is provided on the valve body. The valve body has an upper valve core cavity located above the valve core assembly. An upper cavity inlet for connecting the inlet and the upper valve core cavity is opened in the valve core assembly. An inner cavity inlet for connecting the upper valve core cavity to the inner cavity is also opened on the valve core assembly. An electrically controlled water outlet channel for connecting the upper valve core cavity and the outlet is opened on the side wall of the valve body. A solenoid valve mechanism for controlling the opening and closing of the electrically controlled water outlet channel is provided on the upper side of the valve core mechanism of the valve body.

2. The sensor-operated flushing valve with handle according to claim 1, characterized in that: The solenoid valve mechanism includes an upper valve seat and a solenoid valve. The upper valve seat is fixed in the valve body and located on the upper side of the valve core mechanism. The upper valve seat has an upper valve water outlet that connects the upper cavity of the valve core and the electrically controlled water outlet channel. The solenoid valve is fixed in the valve body and located above the upper valve seat. The solenoid valve has a solenoid valve core for sealing the upper valve water outlet.

3. The sensor-operated flushing valve with handle according to claim 2, characterized in that: An outer annular groove is formed on the outer side wall of the upper valve seat, and an inner annular groove is formed on the upper valve seat located outside the upper valve water inlet. The upper valve seat includes an upper valve water pipe located in the inner annular groove. The upper valve water inlet is located in the upper valve water pipe. A connecting hole is formed between the inner annular groove and the outer annular groove of the upper valve seat. The outer annular groove is connected to the electrically controlled water outlet channel. The valve core of the solenoid valve is located on the upper side of the upper valve water pipe.

4. A sensor-operated flushing valve with a handle according to claim 3, characterized in that: The lower end of the upper valve water inlet is closed, and the upper valve seat has a side wall water inlet at the lower end of the upper valve water inlet.

5. A sensor-operated flushing valve with a handle according to claim 1, characterized in that: The outer valve core assembly includes an outer valve core base, an outer valve core upper seat, and an outer valve core lower seat. The outer valve core lower seat is threadedly tightened at the lower end of the outer valve core base. The lower sealing element is clamped between the outer valve core base and the outer valve core lower seat. The outer valve core upper seat is threadedly tightened at the upper end of the outer valve core base. The upper sealing element is snapped onto the outside of the outer valve core upper seat. The inner cavity is located between the outer valve core base and the outer valve core upper seat. The bottom of the inner cavity is provided with an inner water-passing seal clamped between the outer valve core base and the outer valve core upper seat. The inner valve core is used to form a retaining seal with the inner water-passing seal.

6. A sensor-operated flushing valve with a handle according to claim 5, characterized in that: The upper cavity water inlet enters from the side wall of the upper seat of the outer valve core and extends upward through the upper seat of the outer valve core. The upper end of the upper cavity water inlet is threadedly connected to the upper cavity water inlet seat, and the upper cavity water inlet seat has a narrow diameter opening.

7. A sensor-operated flushing valve with a handle according to claim 6, characterized in that: The upper cavity water inlet seat is equipped with a conical spring, the lower end of which is engaged with the upper cavity water inlet seat, and the upper end of which extends out of the upper cavity water inlet seat.

Images