A flush valve

Abstract

The present invention provides a flush valve, comprising a valve body having a water passage, a water stop assembly, and a pressure relief valve. The water stop assembly is assembled in the water passage to divide the water passage into a water inlet chamber, a back pressure chamber, and a water outlet chamber, wherein the back pressure chamber is connected to the pressure relief passage. The pressure relief valve comprises an electric pressure relief valve and a manual pressure relief valve. The pressure relief passage has a first branch and a second branch arranged in parallel. The electric pressure relief valve is arranged on the first branch to control the opening and closing of the first branch. The manual pressure relief valve comprises a first part and a second part. The first part is assembled on the second branch to block the second branch. The first part has a first magnet. The second part is movably arranged to approach or move away from the first part. The second part has a second magnet. When the second part approaches the first part, the first magnet and the second magnet attract each other, driving the first part to move, thereby opening the second branch. Manual and electric control are achieved separately, and manual control is more labor-saving.

Description

Technical Field

[0001] The present invention relates to a flush valve. Background Art

[0002] Flush valves are widely used in toilets for flushing control. Existing flush valves generally have an electrically controlled electric pressure relief valve and a manually controlled manual pressure relief valve to prevent them from being unusable during power outages. Existing manual pressure relief valves are generally press-type structures, such as the manual pressure relief valve structure disclosed in the application number: 201920798744.0, entitled A Manual-Electric Integrated Drainage Device. Press-type manual pressure relief valves often require a greater force to press, that is, the force used to press the manual pressure relief valve must be greater than the force used by the manual pressure relief valve itself for sealing (such as the elastic force of the return spring 34 in the above-mentioned reference document), or must be greater than the sum of the force used by the manual pressure relief valve itself for sealing and the water pressure, in order to drive the manual pressure relief valve to release pressure. This makes operation more difficult for people with less strength, such as the elderly and children. Summary of the Invention

[0003] Therefore, the present invention provides a flush valve to solve the above problems.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A flush valve comprises a valve body having a water flow channel, a water stop assembly and a pressure relief valve, wherein the water stop assembly is assembled in the water flow channel to divide the water flow channel into a water inlet chamber, a back pressure chamber and a water outlet chamber, and the back pressure chamber is connected to the pressure relief channel; the pressure relief valve comprises an electric pressure relief valve and a manual pressure relief valve, and the pressure relief channel has a first branch and a second branch arranged in parallel, and the electric pressure relief valve is arranged on the first branch to control the on and off of the first branch; the manual pressure relief valve comprises a first part and a second part, the first part is assembled on the second branch to block the second branch, and the first part has a first magnet; the second part can be movably arranged to approach or move away from the first part, and the second part has a second magnet. When the second part approaches the first part, the first magnet and the second magnet are attracted to drive the first part to move, thereby opening the second branch.

[0006] Furthermore, the first part includes a sealing component, a compression spring and the first magnet. The sealing component corresponds to the water outlet of the second branch and seals the water outlet under the action of the compression spring; the first magnet is arranged in the sealing component.

[0007] Furthermore, the sealing assembly includes a sealing shell, a connecting piece and a sealing block, the first magnet is assembled in the sealing shell, the connecting piece is sealed and fixed on the sealing shell, the sealing block is fixed on the connecting piece and corresponds to the water outlet of the second branch.

[0008] Furthermore, the first branch and the second branch both include a water inlet connected to the back pressure chamber, a water passage chamber connected to the water inlet, and a water outlet connected to the water passage chamber. The water inlet, water passage chamber, and water outlet of the first branch are defined as the first water inlet, the first water passage chamber, and the first water outlet, respectively. The water inlet, water passage chamber, and water outlet of the second branch are defined as the second water inlet, the second water passage chamber, and the second water outlet, respectively. The sealing block of the electric pressure relief valve is accommodated in the first water passage chamber and corresponds to the first water outlet. The first part of the manual pressure relief valve is accommodated in the second water passage chamber and corresponds to the second water outlet.

[0009] Furthermore, the second water passage chamber is formed by a receiving groove opened in the valve body and a cover plate sealingly covering the receiving groove. A guide groove is formed on the cover plate, and the first part is assembled in the guide groove.

[0010] Furthermore, the cover is equipped with a slidable mounting frame, and the second part is fixed on the mounting frame. The mounting frame slides relative to the cover, thereby driving the second part to approach or move away from the first part.

[0011] Furthermore, a spring is installed between the mounting bracket and the cover plate, and the spring applies an elastic force to the mounting bracket to move the second part thereof away from the first part; a limiting slot is provided on the cover plate, and a limiting boss is provided on the mounting bracket that extends into the limiting slot.

[0012] Furthermore, the water passage of the valve body is a one-inlet and multiple-outlet structure, with a water inlet section and multiple water outlet sections, each water outlet section is provided with a water stop assembly, the back pressure chamber formed by each water stop assembly is connected to a pressure relief channel, and each pressure relief channel is provided with a pressure relief valve; and the second parts of the multiple manual pressure relief valves are all fixed on the same slidable mounting bracket.

[0013] Furthermore, an anti-siphon mechanism is provided in the water outlet cavity.

[0014] Furthermore, the anti-siphon mechanism includes a one-way valve and an air inlet channel connected to the water outlet chamber; the one-way valve is assembled in the water outlet chamber, and the opening of the air inlet channel connected to the water outlet chamber is located at the front end of the one-way valve.

[0015] The technical solution provided by the present invention has the following beneficial effects:

[0016] 1. The pressure relief channel has a first branch and a second branch arranged in parallel, and the electric pressure relief valve and the manual pressure relief valve are respectively arranged on the first branch and the second branch. In this way, the electric pressure relief valve and the manual pressure relief valve can both control drainage to prevent unavailability during power outages.

[0017] 2. The provided manual pressure relief valve utilizes the magnetic attraction between the first magnet in the first part and the second magnet in the second part to open and flush. The operator simply moves the movable second part closer to the first part, significantly reducing the driving force and making it suitable for a wider range of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic diagram of the appearance of the flush valve in the embodiment;

[0019] Figure 2 The figure shows a partial structural exploded schematic diagram of the flush valve in the embodiment;

[0020] Figure 3 Shown is a top view of a flush valve in an embodiment;

[0021] Figure 4 Shown Figure 3 Cross-sectional view along line AA;

[0022] Figure 5 Shown Figure 3 Cross-sectional view along the midline BB;

[0023] Figure 6 Shown Figure 5 Enlarged schematic diagram of the middle H region;

[0024] Figure 7 Shown Figure 5 Enlarged schematic diagram of the middle I region;

[0025] Figure 8 The figure shows a schematic structural diagram of the flush valve in the embodiment when the second part is away from the first part;

[0026] Figure 9 Shown Figure 8 Enlarged schematic diagram of the middle J region;

[0027] Figure 10 Shown Figure 3 Cross-sectional view of the mid-CC line;

[0028] Figure 11 Shown is a schematic diagram of the structural decomposition of the first part in the embodiment;

[0029] Figure 12 The figure shows a schematic structural diagram of the cover plate in the embodiment;

[0030] Figure 13 Shown is a schematic structural diagram of the mounting frame in the embodiment. DETAILED DESCRIPTION

[0031] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the present disclosure and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, one of ordinary skill in the art will understand other possible embodiments and the advantages of the present invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0032] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1 to 13 As shown, this embodiment provides a flushing valve, including a valve body 10 with a water passage, a water-stop assembly 20 and a pressure relief valve. The water-stop assembly 20 is assembled in the water passage to divide the water passage into a water inlet chamber 111, a back pressure chamber 121 and a water outlet chamber 112. The water-stop assembly 20 moves toward the back pressure chamber 121 to open the water inlet chamber 111 and the water outlet chamber 112 to achieve water flushing. The water-stop assembly 20 moves toward the water outlet chamber 112 to block the water outlet chamber 112 to achieve water stopping.

[0034] The back-pressure chamber 121 is connected to a pressure relief channel. The pressure relief valve includes an electric pressure relief valve 100 and a manual pressure relief valve 200. The pressure relief channel has a first branch 310 and a second branch 320 connected in parallel. The electric pressure relief valve 100 is specifically a solenoid valve. The electric pressure relief valve 100 is provided on the first branch 310 to control the opening and closing of the first branch 310. When flushing is required, the electric pressure relief valve 100 is controlled to operate, opening the first branch 310. Water in the back-pressure chamber 121 flows out of the first branch 310, thereby activating the flushing valve.

[0035] The manual pressure relief valve 200 includes a first part 30 and a second part 40. The first part 30 is assembled on the second branch 320 to block the second branch 320. The first part 30 has a first magnet 31. The second part 40 can be movably arranged to approach or move away from the first part 30. The second part 40 has a second magnet 41. When the second part 40 approaches the first part 30, the first magnet 31 and the second magnet 41 are attracted to drive the first part 30 to move, thereby opening the second branch 320.

[0036] When manual control of flushing is required, just move the second part 40 so that the second magnet 41 of the second part 40 is close to the first magnet 31 of the first part 30. At this time, the magnetic attraction of the first magnet 31 and the second magnet 41 can drive the first part 30 to move, thereby opening the second branch 320, and the water in the back pressure chamber 121 is discharged from the second branch 320. The water stop assembly 20 moves toward the back pressure chamber 121, thereby starting the flushing of the flushing valve. Compared with conventional manual pressure relief valves, the driving force can be greatly reduced, which is more labor-saving; people with less strength can also operate it easily, and it is suitable for a wider range of people; and it is more flexible. When the pressure relief is completed, the driving force is applied again to move the second part 40 away from the first part 30, or the second part 40 is automatically reset away from the first part 30 by setting a reset structure. In this embodiment, the second part 40 is automatically reset by setting a reset structure.

[0037] The flush valve provided in this embodiment has the following effects:

[0038] 1. The pressure relief channel has a first branch 310 and a second branch 320 arranged in parallel. The electric pressure relief valve 100 and the manual pressure relief valve 200 are respectively arranged on the first branch 310 and the second branch 320. In this way, the electric pressure relief valve 100 and the manual pressure relief valve 200 can both control drainage to prevent unavailability during power outages.

[0039] 2. The provided manual pressure relief valve 200 utilizes the magnetic attraction of the first magnet 31 of the first portion 310 and the second magnet 41 of the second portion 40 to achieve opening and flushing. The operator simply moves the movable second portion 40 closer to the first portion 310, significantly reducing the driving force and providing wider applicability.

[0040] Furthermore, in this embodiment, the pressure relief channel also includes a converging output waterway 330. The water inlets of the first branch channel 310 and the second branch channel 320 are both connected to the back pressure chamber 121, and the water outlets of the first branch channel 310 and the second branch channel 320 are both connected to the converging output waterway 330. The water outlet of the converging output waterway 330 is connected to the water outlet chamber 112, and the water is discharged from the water outlet chamber 122, thereby avoiding water waste.

[0041] The first branch 310 and the second branch 320 both include a water inlet connected to the back pressure chamber 121, a water passage chamber connected to the water inlet, and a water outlet connected to the water passage chamber. The water inlet, water passage chamber, and water outlet of the first branch 310 are defined as the first water inlet, the first water passage chamber, and the first water outlet, respectively. The blocking block of the electric pressure relief valve 100 is accommodated in the first water passage chamber and corresponds to the first water outlet. The first branch 310 is blocked or opened by blocking or opening the first water outlet.

[0042] The water inlet, water passage cavity, and water outlet of the second branch passage 320 are defined as the second water inlet 3201, the second water passage cavity 3202, and the second water outlet 3203, respectively. The first portion 30 of the manual pressure relief valve 200 is accommodated in the second water passage cavity 3202 and corresponds to the second water outlet 3203. The second branch passage 320 is blocked or opened by blocking or opening the second water outlet 3203.

[0043] Furthermore, in this embodiment, the first magnet 31 and the second magnet 41 of the manual pressure relief valve 200 can both be magnets with magnetic properties. That is, when the second magnet 41 approaches the first magnet 31, the first portion 30 is actuated by the attraction between the oppositely charged magnets of the first magnet 31 and the second magnet 41. Of course, in other embodiments, one of the first magnet 31 and the second magnet 41 can be a magnet with magnetic properties, while the other can be a magnetically conductive object (e.g., an iron block). This approach can still achieve the same effect.

[0044] The first part 30 includes a blocking component 32, a compression spring 33, and the first magnet 31. The blocking component 32 corresponds to the second water outlet 3203 and blocks the second water outlet 3203 under the action of the compression spring 33. In this embodiment, the second water outlet 3203 is located below the blocking component 32. The compression spring 33 is arranged above the blocking component 32 and applies a downward elastic force to the blocking component 32, causing the blocking component 32 to move downward and block the second water outlet 3203. The first magnet 31 is arranged in the blocking component 32. When the second part 40 approaches the first part 30, that is, when it moves to the position directly above the first part 30, the combined force of the first magnet 31 and the second magnet 41 drives the blocking component 32 to overcome the elastic force of the compression spring 33 and move upward, thereby opening the second water outlet 3203.

[0045] Specifically, the blocking assembly 32 includes a blocking shell 321, a connector 322, and a blocking block 323. The first magnet 31 is assembled in the blocking shell 321. The connector 322 is sealed and fixed to the blocking shell 321, thereby effectively protecting the first magnet 31. The blocking block 323 is fixed to the connector 322 and corresponds to the second water outlet 3203; the second water outlet 3203 is blocked by the blocking block 323. The structure of the blocking assembly 32 is simple and easy to implement. Of course, in other embodiments, the structure of the blocking assembly 32, or the component structure of the first part 30, is not limited to this.

[0046] Specifically, in this embodiment, the second portion 40 has only the second magnet 41; that is, the second portion 40 is the second magnet 41. Of course, in other embodiments, the second portion 40 may include other components besides the second magnet 41, such as a housing for assembling the second magnet 41.

[0047] Specifically, the second water passage chamber 3202 is enclosed by the receiving groove 101 defined in the valve body 10 and the cover plate 51 sealingly attached thereto. This arrangement facilitates assembly and disassembly of the first portion 30. More specifically, the cover plate 51 is formed with a guide groove 511, into which the first portion 30 fits. During assembly, the first portion 30 is first assembled into the guide groove 511 of the cover plate 51, and then the cover plate 51 is closed and secured.

[0048] The cover 51 is equipped with a slidable mounting frame 52, and the second part is fixed on the mounting frame 52. Specifically, the mounting frame 52 is provided with a mounting groove 521, and the second part 40 (i.e., the second magnet 41) is mounted in the mounting groove 521. By sliding the mounting frame 52 relative to the cover 51, the second part 40 is driven to move closer to or away from the first part 30. In this way, the slidable setting of the second part 40 can be better achieved. Specifically, the mounting frame 52 slides on the cover 51 as shown in FIG. Figure 5 He Ru Figure 8 When the second portion 40 is close to the first portion 30, the second portion 40 is located directly above the first portion 30. Figure 5 、 Figure 6 When the second part 40 moves away from the first part 30, the second part 40 slides laterally to the right and staggers with the first part 30, as shown in FIG. Figure 8 Of course, in other embodiments, the sliding manner of the second part 40 toward or away from the first part 30 is not limited to this, and can also be vertical lifting sliding, or sliding in an inclined direction; or the movable manner is not limited to sliding, such as swinging, rotating, etc.

[0049] A spring 53 is installed between the mounting frame 52 and the cover plate 51. The spring 53 exerts an elastic force on the mounting frame to move the second portion 40 away from the first portion 30, that is, in this embodiment, an elastic force to the right. With this arrangement, when an external force is applied to the mounting frame 52, such as pressing the mounting frame 52 sideways, the mounting frame 52 is pushed to slide relative to the cover plate 51, such as Figure 8 The mounting bracket 52 slides leftward on the base of the spring, bringing the second portion 40 closer to the first portion 30, activating flushing mode. When the external force is removed, the mounting bracket 52, driven by the spring, returns to its original position, sliding rightward again and resetting the second portion 40 away from the first portion 30. This provides an automatic reset function, eliminating the need for manual reset. Specifically, even with the addition of spring 53, the force required to push the mounting bracket 52 is far less than the force required to directly depress the manual pressure relief valve in the prior art.

[0050] Furthermore, in this embodiment, the cover plate 51 is provided with a limiting slot 512, and the mounting frame 52 is provided with a limiting boss 522 extending into the limiting slot 521. Figure 8 As shown, when the mounting bracket 52 is reset, as shown in FIG. Figure 9 As shown, the limiting boss 522 abuts against the wall of the limiting slot 512 to achieve good limiting.

[0051] Furthermore, in this embodiment, the water passage of the valve body 10 is a one-inlet and multiple-outlet structure, specifically, a one-inlet and two-outlet structure, with one water inlet section and two water outlet sections, each water outlet section is provided with a water stop assembly 20, that is, there are two water stop assemblies 20 on the left and right, and the back pressure chamber 121 formed by each water stop assembly 20 is connected to a pressure relief channel, that is, there are two independent pressure relief channels, and each pressure relief channel is provided with a group of pressure relief valves; forming two independent flushing channels. The second parts 40 of the two manual pressure relief valves 200 are both fixed on the same slidable mounting bracket 52. In this way, a single press can drive the two flushing channels to open at the same time, realizing synchronous action. Of course, in other embodiments, the number of flushing channels is not limited to two, but can also be one or three, etc. The manual pressure relief valve 200 of each flushing channel can also be independently controlled, etc.

[0052] More specifically, the first portions 30 of the two manual pressure relief valves 200 are fixed on the same cover plate 51 for easy unified assembly. Of course, in other embodiments, the first portions 30 of the two manual pressure relief valves 200 can also be assembled on different cover plates 51.

[0053] Furthermore, in this embodiment, an anti-siphon mechanism is provided within the water outlet chamber 112. Specifically, the anti-siphon mechanism comprises a one-way valve 61 and an air inlet channel 62 connected to the water outlet chamber 112. The one-way valve 61 is mounted within the water outlet chamber 112, and the opening of the air inlet channel 62 connecting to the water outlet chamber 112 is located at the front end of the one-way valve 61. When negative pressure is generated in the water inlet chamber 111, the one-way valve 61 closes, allowing external air to enter the water outlet chamber 112 and the water inlet chamber 11 through the air inlet channel 62, effectively preventing siphonage. Of course, other embodiments are not limited to this.

[0054] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A flush valve comprising a valve body having a water passage, a water stop assembly, and a pressure relief valve, wherein the water stop assembly is assembled in the water passage to divide the water passage into a water inlet chamber, a back pressure chamber, and a water outlet chamber, wherein the back pressure chamber communicates with the pressure relief passage; characterized in that: The pressure relief valve includes an electric pressure relief valve and a manual pressure relief valve. The pressure relief channel has a first branch and a second branch arranged in parallel. The electric pressure relief valve is arranged on the first branch to control the on and off of the first branch. The manual pressure relief valve includes a first portion and a second portion. The first portion is assembled on the second branch to block the second branch, and the first portion has a first magnet. The second portion is movable to move closer to or farther from the first portion, and the second portion has a second magnet. When the second portion approaches the first portion, the first magnet and the second magnet attract each other, driving the first portion to move, thereby opening the second branch. The first branch and the second branch both include a water inlet connected to the back pressure chamber, a water passage chamber connected to the water inlet, and a water outlet connected to the water passage chamber. The water inlet, water passage chamber, and water outlet of the first branch are respectively defined as the first water inlet, the first water passage chamber, and the first water outlet. The water inlet, water passage chamber, and water outlet of the second branch are respectively defined as the second water inlet, the second water passage chamber, and the second water outlet. The blocking block of the electric pressure relief valve is accommodated in the first water passage chamber and corresponds to the first water outlet. The first part of the manual pressure relief valve is accommodated in the second water passage chamber and corresponds to the second water outlet. The second water passage chamber is formed by a receiving groove provided in the valve body and a cover plate sealingly covering the receiving groove. A guide groove is formed on the cover plate, and the first part is assembled in the guide groove. The cover is equipped with a slidable mounting frame, and the second part is fixed on the mounting frame. The mounting frame slides relative to the cover, thereby driving the second part to move closer to or away from the first part. An anti-siphon mechanism is also provided in the water outlet cavity.

2. The flush valve according to claim 1, wherein: The first part includes a sealing component, a compression spring and the first magnet. The sealing component corresponds to the water outlet of the second branch and blocks the water outlet of the second branch under the action of the compression spring. The first magnet is arranged in the sealing component.

3. The flush valve according to claim 2, wherein: The sealing assembly includes a sealing shell, a connecting piece and a sealing block. The first magnet is assembled in the sealing shell. The connecting piece is sealed and fixed on the sealing shell. The sealing block is fixed on the connecting piece and corresponds to the water outlet of the second branch.

4. The flush valve according to claim 1, wherein: A spring is installed between the mounting bracket and the cover plate, and the spring applies an elastic force to the mounting bracket to move the second part thereof away from the first part; a limiting slot is provided on the cover plate, and a limiting boss is provided on the mounting bracket to extend into the limiting slot.

5. The flush valve according to claim 1, wherein: The water passage of the valve body is a one-inlet and multiple-outlet structure, with a water inlet section and multiple water outlet sections. Each water outlet section is provided with a water stop assembly. The back pressure chamber formed by each water stop assembly is connected to a pressure relief channel, and each pressure relief channel is provided with a group of pressure relief valves; and the second parts of the multiple manual pressure relief valves are all fixed on the same slidable mounting bracket.

6. The flush valve according to claim 1, wherein: The anti-siphon mechanism includes a one-way valve and an air inlet channel connected to the water outlet chamber; the one-way valve is assembled in the water outlet chamber, and the opening of the air inlet channel connected to the water outlet chamber is located at the front end of the one-way valve.

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