Drainage device applied to closestool water tank

Abstract

The utility model relates to the technical field of toilet accessories, in particular to a drainage device applied to a toilet water tank, which comprises a drainage valve main body with a cavity built inside, a water inlet and a water outlet which are communicated with the cavity are arranged on the drainage valve main body, and a water diversion component is arranged at the position of the drainage valve main body corresponding to the water inlet. A water guide part is arranged between the side wall of the drain valve body and the periphery of the water diversion assembly, the upper side face of the water guide part gradually inclines upwards from the bottom of the water diversion assembly in the rotating direction of the water diversion assembly, the space of a drain valve cavity is larger than that of a miniature water pump, and the inner diameter of a water inlet is larger than that of a traditional water inlet port. The water outlet amount of the drain valve is increased, large water flow can fill the underflushing channel more sufficiently, the situation that the water flow rubs air in the underflushing channel is reduced, the mute effect in the closestool cleaning process is better, the drain valve is simple in overall structure, the production and assembly procedures of a water tank assembly can be effectively simplified, and the production cost is reduced. And parts can be conveniently maintained and replaced in the daily use process.

Description

Technical Field

[0001] The utility model relates to the technical field of toilet accessories, in particular to a drainage device applied to a toilet water tank. Background Art

[0002] The drain valve is primarily used to control the draining of the water tank. When the user activates the toilet's drainage system, the drain valve opens to drain the water from the tank into the toilet, completing the flushing process. The drain valve then returns to its closed state, allowing the water tank to refill.

[0003] Traditional drain valves typically utilize an ordinary micro-pump to pump water. For details, see the silt-resistant micro-pump described in Chinese Utility Model Patent Publication No. CN212202502U. The pump includes an inlet and outlet connector, which are perpendicular to each other. An impeller is positioned within a water flow chamber, located between the two connectors. Water entering the pump is then pushed toward the outlet by the rotating impeller. However, due to the small water flow chamber and the small channel of the inlet connector, the water intake is low, which in turn reduces the water output. When the outlet connector is connected to the toilet's flush pipe, during the flushing process, the water flow is unable to completely fill the flush pipe, creating gaps and spaces between the water flow and the pipe wall. This causes friction between the water flow and the air in the flush pipe, generating a loud noise and a poor user experience.

[0004] Secondly, traditional drain valves are usually composed of multiple components, such as a water pump, a water diverter valve, and a drain pipe, connected in sequence. The drainage system is relatively fragmented. For details, please refer to the Chinese utility model patent with announcement number CN217537206U, which describes a smart toilet water storage tank. The drain valve structure is connected to the water outlet of the water pump with an outlet pipe, the end of the outlet pipe is connected to the water diverter valve, and the upper flush outlet of the water diverter valve is connected to the flush pipe. A water stop is provided at the bottom of the flush pipe. Since the drain valve is a split structure, during the production and assembly of the water tank assembly, each component needs to be fixed to the top wall of the water tank separately, and the positional relationship of each component needs to be identified and adjusted. This makes the assembly process cumbersome and is not conducive to the operation and installation of the drain valve. Therefore, further improvements are needed to the existing water tank drainage structure. Summary of the Invention

[0005] The purpose of the present utility model is to provide a drainage device applied to a toilet tank to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a drainage device applied to a toilet water tank, comprising a drainage valve body with a cavity constructed inside, the drainage valve body having a water inlet and a water outlet connected to the cavity, a water diversion assembly for bringing water into the cavity is provided at the drainage valve body corresponding to the water inlet, a water guide portion is provided between the side wall of the drainage valve body and the periphery of the water diversion assembly, and the upper side surface of the water guide portion is gradually inclined upward from its bottom along the direction of rotation of the water diversion assembly.

[0007] Wherein, the water diversion assembly includes an impeller and a driving member for driving the impeller to rotate, and the impeller is located in the cavity and is arranged corresponding to the water inlet.

[0008] There is a gap between the water inlet and the inner side surface of the water guide portion to form a water starting transition section.

[0009] Wherein, a water storage space is formed between the inner wall of the drain valve body and the water-raising transition section, and the water guide part is placed in the water storage space.

[0010] Wherein, a side of the water guide portion facing the impeller is in an arc-shaped structure, so that the inner wall of the water guide portion is close to the outer side surface of the impeller.

[0011] The inner wall of the drain valve body is inclined at least on one side close to the impeller, and the inner wall of the drain valve body gradually inclines outward from the bottom.

[0012] The water guide parts are in multiple groups, and the multiple groups of water guide parts are arranged in sequence and spaced apart and distributed around the periphery of the impeller.

[0013] The driving member is assembled in the cavity of the drain valve body through a connecting portion, a water passage is provided between the outer wall of the driving member and the inner wall of the cavity, and the water guide portion and the connecting portion are staggered with each other.

[0014] Wherein, the water diversion assembly, the water guide portion and the water passage are all constructed on the drain valve body.

[0015] Wherein, the drain valve body is constructed with a diverter at the water outlet, and the diverter is communicated with the cavity inside the drain valve body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application adopts an impeller arranged at the water inlet of the cavity of the drain valve body, and a water guide part is arranged between the impeller and the inner wall of the drain valve body. The driving part drives the impeller to rotate, and uses the centrifugal force generated by the rotation of the impeller to bring the water in the water tank into the water storage space in the cavity. As the impeller rotates, the water flow is pushed upward along the water guide part and discharged from the diversion part at the water outlet. Since the space of the drain valve cavity is much larger than the space of the micro water pump, the inner diameter of the water inlet is also larger than the traditional water inlet port. By spirally sending water upward, the drainage efficiency of the drain valve is effectively increased, and the water output of the drain valve is increased. When the diversion part is connected to the downflush channel of the toilet, during the flushing process, the larger water flow can more fully fill the downflush channel, reduce the friction between the water flow and the air in the downflush channel, and make the toilet cleaning process quieter.

[0017] Secondly, since this solution integrates multiple components such as the water diversion assembly, water flow channel, and diversion part into one, the pipe connections between the components are reduced, making the overall structure of the drain valve simpler. The integrated drainage device can effectively simplify the production and assembly process of the water tank assembly, making it convenient for maintenance and replacement of components during daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a drainage device used in a toilet tank;

[0019] Figure 2 A side structural diagram of a drainage device used in a toilet tank;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0021] Figure 4 A schematic diagram of the disassembled three-dimensional structure of a drainage device used in a toilet tank;

[0022] Figure 5 A schematic diagram of a partial three-dimensional structure of a drainage device used in a toilet tank Figure 1 ;

[0023] Figure 6 A schematic diagram of a partial three-dimensional structure of a drainage device used in a toilet tank Figure 2 ;

[0024] Figure 7 A schematic diagram of a partial three-dimensional structure of a drainage device used in a toilet tank Figure 3 ;

[0025] Figure 8 A schematic diagram of a partial three-dimensional structure of a drainage device used in a toilet tank Figure 4

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the drainage device and water tank.

[0027] The markings of the components in the accompanying drawings are as follows:

[0028] 1-drain valve body, 11-water inlet, 12-water outlet, 13-water guide, 14-water riser transition section, 15-water storage space, 16-connecting part, 17-water passage, 18-diverter, 19-outer cover, 110-water hole; 21-impeller, 22-driving part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1, as Figure 1-8 As shown, a drainage device for a toilet water tank includes a drainage valve body 1 with a cavity constructed therein, the drainage valve body 1 having a water inlet 31 and a water outlet 32 connected to the cavity, the drainage valve body 1 is provided with a water guide component for bringing water into the cavity corresponding to the water inlet 31, a water guide portion 33 is provided between the side wall of the drainage valve body 1 and the periphery of the water guide component, the upper side surface of the water guide portion 33 is gradually inclined upward from its bottom along the direction of rotation of the water guide component, wherein the water guide component includes an impeller 41 and a driving member 42 for driving the impeller to rotate, the impeller 41 is located in the cavity and is arranged corresponding to the water inlet 31, the driving member drives the impeller to rotate, and uses the centrifugal force generated by the rotation of the impeller to bring water in the water tank into the cavity and throw the water flow to the end of the blade and gather it into As the impeller rotates, the outer periphery of the blade pushes the water to flow upward along the water guide spiral and then be discharged through the water outlet. The centrifugal force of the impeller is used to throw the water in the water tank into the drain valve, and the water is sent upward through the water guide spiral, which speeds up the water inlet speed, thereby effectively increasing the water output of the drain valve. When the water outlet of the drain valve is connected to the downflush channel of the toilet, during the flushing process, the larger water flow can more fully fill the downflush channel, reduce the friction between the water flow and the air in the downflush channel, and make the toilet cleaning process quieter. Secondly, since this solution integrates multiple components such as the water guide assembly, water flow channel, and diversion part into one, the pipe connection between the components is reduced, making the overall structure of the drain valve simpler. The integrated drainage device can effectively simplify the production and assembly process of the water tank assembly, and facilitate maintenance and replacement of components during daily use.

[0031] Among them, the driving member 42 is a motor, preferably a brushless motor, and the impeller 41 includes a wheel disc, one side of the wheel disc is connected to the rotor of the brushless motor, and blades are vertically arranged on the other side of the wheel disc. The impeller 41 is placed along the axial direction of the water inlet 31. The impeller and the brushless motor are existing structures and are not described in detail in this solution.

[0032] Specifically, the drain valve body 1 includes a hollow outer shell, a water supply part is embedded in one side of the outer shell, the water guide part 33 is arranged on the inner wall of the water supply part, the water inlet 31 is arranged at the bottom of the water supply part, and an installation groove is constructed in the middle of the water supply part. A rotating shaft is inserted into the installation groove, and the impeller and the rotor of the motor are sleeved on the rotating shaft. When the motor is energized, the impeller rotates, and then the water in the water tank is sucked into the water supply part by centrifugal force.

[0033] Preferably, there is a gap between the water inlet 31 and the inner side surface of the water guide 33 to form a water-starting transition section 34, and a water storage space 35 is formed between the inner wall of the drain valve body 1 and the water-starting transition section 34. The water guide 33 is placed in the water storage space 15, so that the impeller uses centrifugal force to suck the water flow in the water supply part and throw it to the outside of the impeller, and collect it in the water storage space outside the impeller to prevent the water flow from flowing back into the water tank again. The water guide 33 has an arc-shaped structure on the side facing the impeller, so that the inner wall of the water guide 33 is close to the outer side surface of the impeller 41, so that the water flow collected in the water storage space is conveniently transported upward along the water guide as the impeller rotates continuously, driven by centrifugal force, to achieve rapid water supply to the drain valve, thereby increasing the water output of the drain valve.

[0034] In this embodiment, the inner wall of the drain valve body 1 is inclined at least on one side close to the impeller 41, and the inner wall of the drain valve body 1 gradually inclines outward from its bottom. Specifically, the inner wall of the water supply part is inclined, which helps the water flow to spiral upward along the water guide part.

[0035] Among them, the water guide parts 33 are in multiple groups, and the multiple groups of water guide parts 33 are arranged in sequence and distributed around the outer circumference of the impeller 41. They can timely transport more water sucked into the water supply part by the impeller upward, effectively increasing the water output of the drain valve.

[0036] Preferably, an outer cover 39 is provided on the outside of the water inlet 31 of the drain valve body 1. The outer cover 39 is hollow and has several groups of water holes 310. When the water diversion component is started, the water in the water tank enters the water supply part from the water inlet through the water holes. The outer cover is used to separate the water inlet from the inner wall of the water tank to ensure that the water inlet channel of the water inlet is unobstructed.

[0037] Among them, the driving member 42 is assembled in the cavity of the drain valve body 1 through the connecting part 36, and a water passage 37 is provided between the outer wall of the driving member 42 and the inner wall of the cavity. The water guide part 33 and the connecting part 22 are staggered with each other. Specifically, the connecting part is a groove body and a connecting column arranged inside the outer shell. The motor body is placed in the groove body, one end of the connecting column is connected to the outer wall of the groove body, and the other end of the connecting column is connected to the inner wall of the outer shell, thereby fixing the groove body inside the outer shell. A placement channel is constructed between the groove body and the outer shell, and the placement channel passes through the outer shell and the groove body. The power supply line on the motor passes through the placement channel and is exposed to the drain valve, which is convenient for powering the motor.

[0038] Among them, the drain valve body also includes a water flow shell with a hollow internal structure, and the water flow shell is assembled on the side of the outer shell opposite to the water supply part. Preferably, the inner diameter of the water flow shell at least on the side close to the water outlet is smaller than the inner diameter of the outer shell, which is conducive to enhancing the water pressure of the water outlet and making the toilet clean better.

[0039] Preferably, an extension platform extending outward from the outer wall of the water flow housing is constructed on the water flow housing at the water outlet, a one-way valve is installed on the extension platform, and the one-way valve cover is arranged on the upper side of the water outlet.

[0040] In this embodiment, the drain valve body 1 is provided with a diverter 38 at the water outlet 32. The diverter 38 is connected to the cavity within the drain valve body 1. Specifically, the diverter 38 is mounted on the side of the water flow housing near the water outlet. The extension platform is provided with a peripheral edge around the one-way valve. The inner wall of the peripheral edge is provided with an internal thread. The outer wall of the diverter is provided with an external thread. The diverter is removably mounted on the water flow housing through the mating of the external and internal threads. This facilitates the replacement of different types of diverters and enhances the adaptability of the drain valve. The diverter is provided with an upper flush outlet and a lower flush outlet. The upper flush outlet is connected to the upper flush outlet of the toilet, allowing water to spiral around the side wall of the toilet bowl. The lower flush outlet is connected to the lower flush outlet of the toilet, allowing water to drain under the spiral flow, achieving a silent flushing effect.

[0041] Example 2: Figure 1-9As shown, a water tank assembly suitable for a toilet also includes a water tank body, a mounting hole is constructed on the water tank body, and the drain valve body 1 is located on the lower side of the extension platform and is constructed with an annular wall, the annular wall extends from the lower side of the extension platform toward the bottom of the drain valve body 1, and a locking clip is provided on the outer surface of the annular wall, and a snap-fitting protrusion is provided on the inner wall of the water tank body located in the mounting hole, and the drain valve body 1 is detachably assembled on the water tank body by engaging the locking clip with the snap-fitting protrusion.

[0042] In this embodiment, a raised ring is provided on the annular wall, extending outward from the outer surface of the annular wall. An inner groove for mounting a sealing ring is formed between the upper end surface of the raised ring and the lower end surface of the extension platform. The locking clip comprises a vertical portion and a transverse portion. One end of the vertical portion is connected to or in proximity with the lower end surface of the raised ring, and the other end of the vertical portion is connected to the transverse portion, forming a mounting space between the transverse portion, the vertical portion, and the lower end surface of the raised ring. The drain valve body is removably mounted on the water tank body by being positioned within the mounting space by the locking clip.

[0043] Preferably, a rotation-stopping portion is provided on the annular wall, and a limiting portion is provided on the clamping protrusion. The rotation-stopping portion is clamped in the limiting portion to further limit the drain valve, so that the drain valve can be more firmly assembled on the water tank.

[0044] Preferably, the annular wall and the mounting hole are arranged in a circular structure, the drain valve is placed in the mounting hole, and the drain valve is rotated to engage the locking buckle with the snap-fitting protrusion, thereby making the drain valve detachable and mounted on the water tank body.

[0045] The existing metal parts connection is replaced by the snap-fit connection of the snap-fit protrusion and the locking buckle, which can simplify the assembly steps and achieve quick assembly in production and assembly. Secondly, since the locking holes on the water tank body are reduced, the sealing of the water tank is effectively improved and the occurrence of water tank overflow is reduced.

[0046] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A drainage device for a toilet tank, comprising a drainage valve body having a cavity therein, the drainage valve body having a water inlet and a water outlet communicating with the cavity, characterized in that: A water diversion assembly for bringing water into the cavity is provided at the corresponding position of the drain valve body and the water inlet, and a water guide portion is provided between the side wall of the drain valve body and the periphery of the water diversion assembly. The upper side surface of the water guide portion is gradually inclined upward from its bottom along the direction of rotation of the water diversion assembly.

2. A drainage device for a toilet tank according to claim 1, characterized in that: The water diversion assembly includes an impeller and a driving member for driving the impeller to rotate. The impeller is located in the cavity and is arranged corresponding to the water inlet.

3. The drainage device for a toilet tank according to claim 1, characterized in that: There is a gap between the water inlet and the inner side surface of the water guide portion to form a water starting transition section.

4. The drainage device for a toilet tank according to claim 3, characterized in that: A water storage space is formed between the inner wall of the drain valve body and the water-raising transition section, and the water guide portion is placed in the water storage space.

5. The drainage device for a toilet tank according to claim 2, characterized in that: The side of the water guide portion facing the impeller is in an arc-shaped structure, so that the inner wall of the water guide portion is close to the outer side surface of the impeller.

6. The drainage device for a toilet tank according to claim 2, characterized in that: At least one side of the inner wall of the drain valve body close to the impeller is inclined, and the inner wall of the drain valve body is gradually inclined outward from the bottom.

7. The drainage device for a toilet tank according to claim 2, characterized in that: The water guide parts are in multiple groups, and the multiple groups of water guide parts are arranged in sequence at intervals and distributed around the outer circumference of the impeller.

8. The drainage device for a toilet tank according to claim 2, characterized in that: The driving member is assembled in the cavity of the drain valve body through a connecting portion. A water passage is provided between the outer wall of the driving member and the inner wall of the cavity. The water guide portion and the connecting portion are staggered with each other.

9. The drainage device for a toilet tank according to claim 8, characterized in that: The water guide assembly, the water guide portion and the water passage are all constructed on the drain valve body.

10. The drainage device for a toilet tank according to claim 1, characterized in that: The drain valve body is provided with a diverter at the water outlet, and the diverter is communicated with the cavity inside the drain valve body.

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