A water inlet valve anti-leakage water stopping device

Abstract

The present invention discloses a water inlet valve anti-leakage and water-stopping device, comprising a water inlet valve body, a water stop switch, a water stop valve, a magnetic structure, and a small float. The water inlet valve body is provided with water inlet and outlet channels, the water outlet channel is provided with a water outlet end face, the water stop valve blocks the water outlet end face, a water passage cavity is provided between the water inlet channel and the water outlet channel, one end of the water passage cavity is a water passage surface for water to pass from the water inlet channel to the water outlet channel, and the other end is provided with an installation opening; the installation opening is provided with the water stop switch, the water stop switch comprises a drive switch and a water stop member, the inner end of the drive switch is provided with the water stop member, the drive switch is slidably arranged in the water passage cavity to drive the water stop member to slide open or block the water passage surface; the small float is provided with a drive unit, a magnetic structure is provided between the drive unit and the drive switch, the drive unit floats up and down with the small float to magnetically attract the drive switch, and when the drive unit magnetically attracts the drive switch, the drive switch slides to block the water passage surface. The water stop structure and magnetic structure added to the water inlet valve of the present invention solve the water leakage problem, and the structure is novel and has a long service life.

Description

Technical Field

[0001] The invention belongs to the technical field of bathroom water fittings, and in particular relates to a water inlet valve anti-leakage and water-stopping device. Background Art

[0002] The existing toilet tank inlet valve mainly uses the water pressure in the domestic water network to achieve water inlet or blocking. It includes a valve body, a water stop valve, a buoyancy control mechanism, an inlet channel, and an outlet channel. The water stop valve is installed on the valve body, and the valve body is connected to the water inlet pipe. The buoyancy control mechanism controls the internal pressure chamber of the water stop valve to form water pressure or release pressure, thereby achieving the flow of water between the inlet channel and the outlet channel. Among them, the toilet tank inlet valve is divided into back pressure inlet valve and needle valve inlet valve according to the different structures of the water stop valve. Both rely on the installation of a water stop pad inside the water stop valve to form a pressure chamber, and rely on the elastic deformation of the water stop pad to seal the water stop surface of the water inlet channel to achieve the flow of water. For example, when the pressure relief hole of the back pressure inlet valve is blocked, the water volume in the back pressure chamber increases, and the back pressure rubber pad expands to block the connection between the inlet channel and the outlet channel. Both back-pressure and needle valve inlet valves are susceptible to failure, which can cause the inlet valve to continuously pump water into the water tank, resulting in leakage and wasting water resources. However, the internal waterway design of most inlet valves is traditional, which limits the design of additional devices and also requires consideration of lifespan issues such as structural wear. Therefore, the present invention proposes a novel anti-leakage and water-stopping device for inlet valves. Summary of the Invention

[0003] The purpose of the present invention is to provide a water inlet valve anti-leakage and water-stopping device, which can solve the water leakage problem by adding a water-stopping structure and a magnetic structure on the water inlet valve, and has a novel structure and a long service life.

[0004] To achieve the above-mentioned purpose, the solution of the present invention is as follows: a water inlet valve anti-leakage and water-stop device, comprising a water inlet valve body, a water stop switch, a water stop valve, a magnetic structure and a small float, wherein a water inlet channel and a water outlet channel are provided in the water inlet valve body, a water outlet end face is provided in the water outlet channel, the water stop valve blocks the water outlet end face, a water flow cavity is provided between the water inlet channel and the water outlet channel, one end of the water flow cavity is a water flow surface for water to flow from the water inlet channel to the water outlet channel, and the other end is provided with a mounting opening; the mounting opening is provided with a water stop switch, the water stop switch comprises a driving switch and a water stop member, the outer end of the driving switch is exposed from the mounting opening, the inner end of the driving switch is provided with a water stop member, the driving switch is slidably provided in the water flow cavity to drive the water stop member to slide open or block the water flow surface;

[0005] The small float is provided with a driving part, and a magnetic structure is provided between the driving part and the driving switch. The driving part floats up and down with the small float and magnetically attracts the driving switch. When the driving part magnetically attracts the driving switch, the driving switch slides and blocks the water surface.

[0006] As a preferred solution, the water stop switch also includes an elastic pin and a coil spring, the water stop part is a plunger, and the driving switch includes a knob, a screw and a switch bracket. The center of the switch bracket is axially provided with an internal threaded hole, the rod body of the screw is provided with an external thread, and the screw is fitted into the internal threaded hole. The outer end of the screw slides and sleeves the knob and is circumferentially limited with the knob. The knob slides axially relative to the switch bracket, and the sliding direction of the knob is opposite to the moving direction of the screw. A plunger is provided at the inner end of the screw, and the screw movably pushes the plunger to open or block the water surface. The coil spring is arranged between the knob and the switch bracket in a compressed initial state. A pin hole is opened on one side of the switch bracket, and an elastic pin is built into the pin hole. The side of the knob is provided with a clamping portion for the elastic pin to clamp.

[0007] As a preferred solution, the magnetic structure includes a first magnet and a second magnet. The driving part of the small float is located on the side and below of the elastic pin, and the second magnet is arranged on the outside of the elastic pin. The driving part is provided with a magnetic second magnet to make the elastic pin slide and contract and disengage from the first magnet of the clamping part.

[0008] As a preferred solution, the switch bracket is provided with a mounting column, an internal threaded hole is provided inside the mounting column, the inner end of the mounting column is inserted into the water passage cavity through the mounting port, the outer end of the mounting column is sleeved with a coil spring, one end of the coil spring abuts against the knob, and the other end of the coil spring abuts against the switch bracket.

[0009] As a preferred solution, a first O-ring is provided between the screw and the internal threaded hole, a second O-ring is sleeved on the connection between the inner end of the mounting column and the water chamber, a tapered plug is formed in the middle of the end of the screw, and the plunger has a central through hole at a position corresponding to the tapered plug. When the screw is pushed against the plunger, the tapered plug seals the central through hole, so that the internal threaded hole forms a back pressure chamber on the back of the plunger.

[0010] As a preferred solution, the water inlet valve body is provided with an open clearance opening at the position of the knob and the elastic pin.

[0011] As a preferred solution, the plunger is made of rubber material.

[0012] As a preferred solution, the water stop valve is a back pressure valve.

[0013] After adopting the above scheme, the benefit effect of the present invention is as follows: the present invention designs a brand-new internal waterway structure, and centrally arranges the water inlet channel and the water outlet channel at the same end of the water passage chamber, so that a water stop switch can be added to the other end of the water passage chamber. The water stop switch slides in the water passage chamber to control whether the water inlet channel and the water outlet channel are connected. Therefore, when the water stop pad cannot block the water outlet end face of the water outlet channel, that is, when the water inlet valve fails, the water stop switch can block the water surface to block the connection between the water inlet channel and the water outlet channel, thereby completing water stopping and replacing the water stop pad for water stopping. The present invention has a simple and ingenious structure and can be applied to most water inlet valves. In addition, the present invention also designs an ingenious water stop switch structure. When the water level is too high, the small float can automatically drive the water stop switch to stop water through the magnetic structure. The magnetic structure has little wear, which can extend the service life and stably realize the opening and stopping of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a state diagram of the small float and the elastic pin separated from each other in the embodiment of the present invention (when the water level drops);

[0015] Figure 2 It is a schematic diagram of the decomposed structure of the first embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of a half-exploded structure of the first embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of a half-cutaway three-dimensional structure of the first embodiment of the present invention;

[0018] Figure 5 1 is a schematic diagram of a half-section front view of the structure of the first embodiment of the present invention;

[0019] Figure 6 yes Figure 4 Enlarged view of point A in the middle;

[0020] Figure 7 yes Figure 5 Enlarged view of point B in the middle;

[0021] Figure 8 This is a schematic diagram of the three-dimensional structure of the inner valve body of the water inlet valve body according to the first embodiment of the present invention;

[0022] Figure 9 This is a schematic diagram of the three-dimensional structure of a switch bracket according to a first embodiment of the present invention;

[0023] Figure 10 1 is a schematic diagram of the three-dimensional structure of a knob according to an embodiment of the present invention;

[0024] Figure 11 yes Figure 3 Enlarged view of point C in the middle;

[0025] Figure 12This is a state diagram of the magnetic attraction between the small float and the elastic pin in accordance with the first embodiment of the present invention (when the water level exceeds the upper limit).

[0026] Description of labels:

[0027] 1. Water inlet valve body; 11. Water inlet channel; 12. Water outlet channel; 121. Annular flow channel; 122. Water outlet annular gap; 13. Water outlet end face; 14. Water outlet aperture; 15. Water passage cavity; 151. L-shaped bend; 16. Water outlet surface; 17. Mounting port; 18. Clearance port; 19. Buckle interface; 2. Water stop switch; 21. Knob; 211. Clamping portion; 22. Screw; 221. Conical plug; 23. Switch bracket; 231. Pin hole; 232. Internal threaded hole; 233. Mounting column; 234. First O-ring; 235. Second O-ring; 236. Anti-siphon plate; 237. Snap-on cam; 24. Elastic pin; 25. Coil spring; 26. Plunger; 261. Center through hole; 262. Back pressure chamber; 27. Second magnet; 3. Back pressure valve; 31. Water-stop pad; 4. Large float; 5. Small float; 51. Drive unit; 52. First magnet. DETAILED DESCRIPTION

[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1:

[0030] The present invention provides a water inlet valve anti-leakage and water-stopping device, such as Figures 1 to 11 As shown, the water inlet valve body 1, the water stop switch 2, the water stop valve, the magnetic structure, and the small float 5 are included. This embodiment uses the water stop valve of the water inlet valve as an example to describe the back pressure valve 3. The back pressure valve 3 is only one type of water stop valve. In other embodiments, other water stop valves including a water stop pad 31 may also be used.

[0031] like Figure 3 and Figure 11 As shown, the inner valve body of the water inlet valve body 1 is provided with a water inlet channel 11 and a water outlet channel 12. The water outlet channel 12 forms a water outlet end face 13, and a water outlet aperture 14 is provided on the water outlet end face 13. The back-pressure valve 3 is arranged on the water outlet end face 13. The back-pressure valve 3 movably controls the water stop pad 31 to open or block the water outlet aperture 14. The back-pressure valve 3 is connected to the large float 4 and moves with the rise and fall of the large float 4. The working principle of the back-pressure valve 3 in this embodiment is consistent with that of the existing back-pressure valve 3 and will not be further described in this case.

[0032] When the back pressure valve 3 fails, the water stop pad 31 cannot block the water outlet end face 13, resulting in continuous water outflow from the water outlet end face 13 and continuous water inflow from the water inlet valve. For this reason, the present invention is specially designed with a magnetically controlled water stop switch 2, which can block water inflow through the water stop switch 2 without the need to stop water through the back pressure valve 3.

[0033] Combine Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The water inlet channel 11 takes in water from bottom to top, and a water passage cavity 15 is provided on the side between the water inlet channel 11 and the water outlet channel 12. One end of the water passage cavity 15 is a water passage surface 16 for water to flow from the water inlet channel 11 to the water outlet channel 12, and the other end is provided with an installation port 17 for installing the water stop switch 2. The water-stop switch 2 includes a driving switch and a water-stop component. The outer end of the driving switch exposes the mounting port 17, and the inner end of the driving switch is provided with a water-stop component. The driving switch is slidingly provided in the water-passing chamber 15 to drive the water-stop component to slide open or block the water-passing surface 16; the small float 5 is provided with a driving part 51, and a magnetic structure is provided between the driving part 51 and the driving switch. The driving part 51 floats up and down with the small float 5 to magnetically drive the switch. As the water level continues to rise, the small float 5 floats up to cause the driving part to magnetically drive the switch. The driving switch is displaced under the action of the magnetic force, driving the driving switch and the water-stop component to slide in the water-passing chamber 15 so that the water-stop component blocks the water-passing surface 16. No water flows between the water inlet channel 11 and the water outlet channel 12, so that the water inlet valve stops inletting water.

[0034] After the water level drops, the driving part 51 of the small float 5 disengages from the driving switch. The above scheme does not limit how the small float 5 reopens the water inlet after the water level drops. This case does not impose any restrictions. This preferred embodiment uses manual driving to reset the driving switch. The water stop reopens the water surface 16 under the action of water flow, and water flows between the water inlet channel 11 and the water outlet channel 12, so that the water inlet valve can resume water intake.

[0035] The manual reset of the drive switch can be driven by pressing or rotating. The preferred embodiment is described below in terms of rotating drive.

[0036] Combine Figure 2 、 Figure 6 and Figure 7 The drive switch includes a knob 21, a screw 22 and a switch bracket 23, the water stop member is a plunger 26, and the water stop switch 2 specifically includes an elastic pin 24 and a coil spring 25. Figure 3 、 Figure 8 and Figure 9 As shown, the switch bracket 23 is installed in the installation port 17, and a pin hole 231 is provided on one side of the switch bracket 23. The pin hole 231 has an elastic pin 24 built in it. Figure 10The side of the knob 21 is provided with a clamping portion 211 for the elastic pin 24 to be movably clamped. The initial state of the elastic pin 24 is clamped with the clamping portion 211, and the knob 21 is rotatably mounted on the switch bracket 23. The coil spring 25 is arranged between the knob 21 and the switch bracket 23 in the compressed initial state. The center of the switch bracket 23 is axially provided with an internal threaded hole 232, and the rod body of the screw 22 is provided with an external thread, and the screw 22 is matched to pass through the internal threaded hole 232. The outer end of the screw 22 slides around the knob 21 and is circumferentially limited by the knob 21. The knob 21 slides axially relative to the switch bracket 23. The sliding direction of the knob 21 is opposite to the moving direction of the screw 22. A plunger 26 is provided at the inner end of the screw 22, and the screw 22 movably pushes the plunger 26 to open or block the water surface 16; the plunger 26 is preferably made of rubber material, which has a certain elastic deformation force, can withstand the push of the screw 22, and can also be reset.

[0037] The present invention uses magnetic force and buoyancy to trigger the movement of the elastic pin 24. Figure 1 As shown, the small float 5 is arranged on the water inlet valve body 1 and is located on the side and below the elastic pin 24. The magnetic attraction structure includes a first magnet 52 and a second magnet 27. The driving part 51 of the small float 5 is provided with the first magnet 52, and the outer side of the elastic pin 24 is provided with the second magnet 27 or the elastic pin 24 itself is a magnetic conductor. The first magnet 52 is located on the side and below the second magnet 27; combined with Figure 1 and Figure 12 The small float 5 floats up and down with the rise and fall of the water level in the water tank, and the driving part 51 cooperates with or disengages from the elastic pin 24; when the first magnet 52 magnetically attracts the second magnet 27, the elastic pin 24 contracts and disengages from the clamping part 211, and when the first magnet 52 disengages from the second magnet 27, the elastic pin 24 resets.

[0038] Based on the above solution, when the back pressure valve 3 fails, the water stopping working process of this preferred embodiment is as follows:

[0039] First, the initial state of the elastic pin 24 is to be engaged with the clamping portion 211, and the initial state of the coil spring 25 is compression. When the water inlet valve continues to fill the water tank, the small float 5 drives the driving portion 51 upward to approach the elastic pin 24 as the buoyancy increases. The first magnet 52 on the driving portion 51 and the second magnet 27 of the elastic pin 24 attract each other, and the elastic pin 24 contracts and disengages from the clamping portion 211 outward. Then, since the limit of the elastic pin 24 is released, the knob 21 moves outward under the tension of the coil spring 25, and drives the screw 22 to move inward (because the moving direction of the screw 22 is opposite to the moving direction of the knob 21, and the moving direction of the screw 22 is determined by the rotation direction of the internal threaded hole 232). Finally, the screw 22 pushes the plunger 26 to block the water surface 16. No water flows between the water inlet channel 11 and the water outlet channel 12, and the water inlet valve stops intake of water.

[0040] When the back pressure valve 3 can stop water normally, the water level drops, and the water stop switch 2 can be reset. The reset process is as follows:

[0041] When the knob 21 is rotated and pressed at the same time, the coil spring 25 is converted from a stretched state to a compressed state. When it is compressed to a certain volume, the small float 5 drives the driving part 51 downward away from the elastic pin 24 due to the decrease in buoyancy. Therefore, the first magnet 52 on the driving part 51 is away from the second magnet 27 of the elastic pin 24, and the elastic pin 24 is reset inward to the engaging part 211 of the knob 21. The knob 21 is restricted at this time and cannot be rotated. When the knob 21 is pressed, it moves inward while driving the screw 22 to move outward. The screw 22 releases the push on the plunger 26, and the water surface 16 is opened. Water flows between the water inlet channel 11 and the water outlet channel 12, and the water inlet valve can take in water normally.

[0042] like Figure 7 and Figure 9 As shown, the switch bracket 23 of the present invention is an important component for installing the water stop switch 2 on the water inlet valve body 1. The middle axis of the switch bracket 23 is provided with a mounting column 233, and an internal threaded hole 232 is provided inside the mounting column 233. The screw 22 is threadedly matched with the internal threaded hole 232. A first O-ring 234 is provided between the screw 22 and the internal threaded hole 232 to ensure that water does not flow out of the internal threaded hole 232; the inner end of the mounting column 233 is plugged into the water flow cavity 15 from the mounting port 17, and a second O-ring 235 is sleeved at the plug-in position to ensure the airtightness of the water flow cavity 15 and prevent water from flowing out of the mounting port 17. A tapered plug 221 is formed in the middle of the end of the screw 22. The plunger 26 is provided with a central through hole 261 at a position corresponding to the tapered plug 221. When the screw 22 is movable and pushes against the plunger 26, the tapered plug 261 is sealed and plugged into the central through hole 261, so that the internal threaded hole 232 forms a back pressure chamber 262 on the back of the plunger 26. The design of the back pressure chamber 262 can form a huge pressure on the back of the plunger 26, so that the plunger 26 can more forcefully block the water surface 16. In addition, the outer end of the mounting column 233 is sleeved with a coil spring 25, one end of the coil spring 25 abuts against the knob 21, and the other end of the coil spring 25 abuts against the switch bracket 23. In this way, most of the components of the water stop switch 2 can be installed on the water inlet valve body 1 through the switch bracket 23. The inner end of the mounting column 233 is also sleeved with an anti-siphon sheet 236. Figure 11As shown, a snap-fitting protrusion 237 is formed on the edge of the switch bracket 23, and a snap-fitting interface 19 is formed on the water inlet valve body 1 at a position corresponding to the snap-fitting protrusion 237. The switch bracket 23 is snapped into the snap-fitting interface 19 of the water inlet valve body 1 through the snap-fitting protrusion 237. The snap-fitting interface 19 protrudes from the water inlet valve body 1 relative to the mounting port 17, so that an annular flow channel 121 connected to the water outlet pore 14 is formed between the water inlet valve body 1 and the snap-fitted switch bracket 23, and a water outlet annular gap 122 is formed on the outer periphery of the water inlet channel 11 of the water inlet valve body 1, so that after the water flows into the water outlet channel 12 from the water flow surface 16, the water is discharged through the water outlet end face 13, the water outlet pore 14, the annular flow channel 121 and the water outlet annular gap 122.

[0043] The structures of the water inlet channel 11 and the water outlet channel 12 are further refined, such as Figure 11 As shown, the water inlet channel 11 is vertically arranged in the water inlet valve body 1, and the water flow chamber 15 is horizontally arranged in the water inlet valve body 1. The water inlet channel 11 is bent and connected to one end of the water flow chamber 15. An L-shaped bending section 151 is provided at one end of the water flow chamber 15. The water flow surface 16 is formed on the L-shaped bending section 151. The water flow chamber 15 is connected to the water outlet end face 13 through the L-shaped bending pipe section 151. The L-shaped bending section 151 is blocked between the water outlet end face 13 and the water inlet channel 11.

[0044] like Figure 1 As shown, the water inlet valve body 1 is provided with an open clearance port 18 at the position of the knob 21 and the elastic pin 24 . The user can operate the reset of the knob 21 through the clearance port 18 , and the small float 5 can also cooperate with the elastic pin 24 through the clearance port 18 .

[0045] When the water inlet valve in this case is intake water normally, the water level in the water tank rises and falls normally and will not drive the small float to trigger the water stop switch. When the water inlet valve in this case fails, water continues to enter the water inlet channel, and the water level of the intake water exceeds the normal water level, causing overflow. The overflow water drives the small float to rise and fall. Therefore, the water level rise and fall described in the present invention may refer to the rise and fall of the overflow water.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. Any equivalent changes made based on the key design of this case shall fall within the scope of protection of this case.

Claims

1. A water inlet valve anti-leakage and water-stopping device, characterized by: It includes a water inlet valve body, a water stop switch, a water stop valve, a magnetic structure and a small float. The water inlet valve body is provided with a water inlet channel and a water outlet channel. The water outlet channel is provided with a water outlet end face. The water stop valve blocks the water outlet end face. A water flow cavity is provided between the water inlet channel and the water outlet channel. One end of the water flow cavity is a water flow surface for water to flow from the water inlet channel to the water outlet channel, and the other end is provided with a mounting port. The water stop switch is installed in the mounting port. The water stop switch includes a driving switch and a water stop member. The outer end of the driving switch is exposed from the mounting port. The water stop member is provided at the inner end of the driving switch. The driving switch is slidably provided in the water flow cavity to drive the water stop member to slide open or block the water flow surface. The small float is provided with a driving part, and a magnetic structure is provided between the driving part and the driving switch. The driving part floats up and down with the small float and movably magnetically drives the switch. When the driving part magnetically attracts the driving switch, the driving switch slides and blocks the water surface; the water stop switch also includes an elastic pin and a coil spring, and the water stop part is a plunger. The driving switch includes a knob, a screw and a switch bracket. The center of the switch bracket is axially provided with an internal threaded hole, the rod body of the screw is provided with an external thread, and the screw is cooperated and penetrated into the internal threaded hole. The outer end of the screw slides and sleeves the knob and is circumferentially limited with the knob. The knob slides axially relative to the switch bracket, and the sliding direction of the knob is opposite to the moving direction of the screw. A plunger is provided at the inner end of the screw, and the screw movably pushes the plunger to open or block the water surface. The coil spring is arranged between the knob and the switch bracket with compression as the initial state. A pin hole is provided on one side of the switch bracket, and an elastic pin is built into the pin hole. The side of the knob is provided with a clamping part for the elastic pin to clamp.

2. The water inlet valve anti-leakage and water-stopping device according to claim 1, characterized in that: The driving part of the small float is located below the elastic pin, a second magnet is provided on the outside of the elastic pin, and the driving part is provided with a first magnet that magnetically attracts the second magnet to make the elastic pin slide and shrink and separate from the clamping part.

3. The water inlet valve anti-leakage and water-stopping device according to claim 1, characterized in that: The switch bracket is provided with a mounting column, an internal threaded hole is provided inside the mounting column, the inner end of the mounting column is inserted into the water passage cavity through the mounting opening, the outer end of the mounting column is sleeved with a coil spring, one end of the coil spring abuts against the knob, and the other end of the coil spring abuts against the switch bracket.

4. The water inlet valve anti-leakage and water-stopping device according to claim 3, characterized in that: A first O-ring is provided between the screw and the internal threaded hole, a second O-ring is sleeved at the joint between the inner end of the mounting column and the water passage cavity, a tapered plug is formed in the middle of the end of the screw, and the plunger has a central through hole at a position corresponding to the tapered plug. When the screw is pushed against the plunger, the tapered plug seals the central through hole, so that the internal threaded hole forms a back pressure cavity on the back of the plunger.

5. The water inlet valve anti-leakage and water-stopping device according to claim 1, characterized in that: The water inlet valve body is provided with an open concession opening at the position of the knob and the elastic pin.

6. The water inlet valve anti-leakage and water-stopping device according to claim 1, characterized in that: The plunger is made of rubber material.

7. The water inlet valve anti-leakage and water-stopping device according to claim 1, characterized in that: The water stop valve is a back pressure valve.

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