A toilet flushing device and a toilet

Abstract

A toilet flushing device and a toilet, wherein the toilet flushing device includes: a flushing box having a receiving cavity and including a waste inlet end and a waste outlet end communicating with the receiving cavity; a flushing straight pipe including a first working state in which it is tilted upward in a horizontal direction to realize a toilet water seal and a second working state in which it extends towards the rear of the toilet to realize waste discharge from the rear of the toilet; a drive device installed in the flushing box and connected to the flushing straight pipe, the drive device being configured to drive the flushing straight pipe to rotate to switch between the first working state and the second working state.

Description

Technical Field

[0001] This article relates to toilet technology, and more particularly to a toilet flushing device and a toilet. Background Technology

[0002] To achieve a tankless design, current toilets typically use a tank integrated within the ceramic casing, flushing via a pump or a tankless design with dual valves. Regardless of whether a tank is present or absent, a dual-path design is generally required for both the brush ring and the jet flushing system. Ceramic toilets often employ an "S" bend that creates a siphon effect, while some use a rubber corrugated pipe that rotates axially for flushing. However, "S" bends can cause problems such as excessive noise or insufficient jet force, resulting in poor flushing performance. While corrugated pipes are quieter, their grooves can trap dirt and grime, hindering flushing and affecting overall performance. Summary of the Invention

[0003] This application provides a toilet flushing device and a toilet, which can realize the normal water seal and horizontal back discharge function of the toilet.

[0004] This application provides a toilet flushing device, including:

[0005] A waste disposal box has a receiving cavity and includes a waste inlet and a waste outlet communicating with the receiving cavity;

[0006] A drain pipe, housed in the receiving cavity, includes an input port and an output port located at opposite ends along its own axial direction. The end face of the input port is an inclined surface relative to the axial direction, and the input port is rotatably mounted to the waste input end of the drain box. The drain pipe includes a first working state in which it curves upward in the horizontal direction to achieve a toilet water seal, and a second working state in which it extends backward in the toilet to achieve waste discharge from the rear of the toilet.

[0007] A drive device is installed in the sewage box and connected to the sewage straight pipe. The drive device is configured to drive the sewage straight pipe to rotate to switch between the first working state and the second working state.

[0008] In one exemplary embodiment, when the drain pipe is in the second working state, the drain pipe extends horizontally or below the horizontal direction behind the toilet to discharge sewage to the rear of the toilet.

[0009] In an exemplary embodiment, the end face of the input port of the sewage straight pipe forms a first included angle a1 with the axial direction of the sewage straight pipe, and the angle range of the first included angle a1 is: 45°≤a1≤60°.

[0010] In an exemplary embodiment, the waste input end of the waste box includes an outer port for fitting with the waste outlet of the toilet body, and an inner port rotatably fitted with the input port of the waste straight pipe.

[0011] The end face of the inner port forms a second included angle a2 with the opposite direction of the sewage discharge direction, and the angle range of the second included angle a2 is: 45°≤a2≤60°.

[0012] In one exemplary embodiment, the toilet flushing device further includes a sealing element disposed at the connection between the input port and the inner port, the sealing element being an oil seal ring.

[0013] In an exemplary embodiment, the end face of the output port of the sewage straight pipe is an inclined surface that is inclined relative to the axial direction, and the inclination direction of the end face of the output port is opposite to the inclination direction of the end face of the input port, so that a water seal is formed on the end face of the output port in the first working state.

[0014] In an exemplary embodiment, the end face of the output port forms a third included angle a3 with the axial direction, the third included angle a3 being greater than the first included angle a1, and the angle range of the third included angle a3 being 75°≤a≤90°.

[0015] In one exemplary embodiment, the sewage straight pipe has a connecting shaft in its body, and the axis of the connecting shaft is perpendicular to the end face of the input port.

[0016] In one exemplary embodiment, the drive device is mounted on the outer wall of the sewage box; the drive device includes a motor and a transmission assembly, the transmission assembly extending into the sewage box and connected to the connecting shaft.

[0017] In one exemplary embodiment, the waste outlet of the drain box is tubular and extends toward the rear of the toilet along the horizontal drain direction or below the horizontal direction.

[0018] In an exemplary embodiment, the waste box includes a box body and a rear cover that is detachably assembled with the box body; the box body is provided with the waste inlet end, and the rear cover is provided with the waste outlet end.

[0019] This application embodiment also provides a toilet, including: a toilet body, and a toilet drain device as described in any of the above embodiments, which is fitted with the toilet body;

[0020] The toilet body includes a basin with a drain outlet, and the waste inlet of the toilet drain device is fitted with the drain outlet.

[0021] In one exemplary embodiment, the toilet body has an installation cavity located behind the basin, and the sewage box of the toilet sewage discharge device is disposed in the installation cavity; the sewage box is disposed at an angle in the installation cavity so that the input port of the sewage discharge pipe is tilted towards the front end of the toilet.

[0022] In one exemplary embodiment, the inner cavity of the drain box that houses the drain pipe is flat in the lateral direction, and its length is greater than its width.

[0023] In one exemplary embodiment, the toilet further includes a bracket for suspending the toilet body, the bracket being used to connect the toilet body to the wall.

[0024] Compared with related technologies, the drain box assembly of this application designs the drain pipe as a straight pipe, which is not easy to accumulate dirt. At the same time, the flipping surface of the drain pipe is designed as an inclined surface that is relatively inclined to the axis of the drain pipe. By flipping and resetting, the drain pipe can switch between a state of tilting upward in the horizontal direction and a state of extending towards the back of the toilet during the flipping process, so as to realize the normal water seal and horizontal sewage discharge function of the toilet.

[0025] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0027] Figure 1 This is a three-dimensional view of the toilet in this application;

[0028] Figure 2 This is a cross-sectional view of the toilet in the front-to-back direction according to this application;

[0029] Figure 3 This is a three-dimensional exploded view of the toilet in this application;

[0030] Figures 4a-4c These are overall perspective views of the toilet's waste disposal components from different angles, as per this application.

[0031] Figure 5 This is a three-dimensional exploded view of the sewage discharge component of the toilet in this application;

[0032] Figure 6 A perspective view of the sewage discharge component of the toilet according to this application;

[0033] Figure 7for Figure 6 Cross-sectional view along the AA direction;

[0034] Figure 8 This is a cross-sectional view of the drain pipe of the toilet's drain assembly in this application;

[0035] Figures 9a-9c This is a view showing the switching between the first and second working states of the toilet's sewage discharge component in this application.

[0036] Figure 10 This is a view of the water seal status of the toilet in this application;

[0037] Figure 11 This is a view showing the sewage discharge status of the toilet in this application.

[0038] Figure 12 This is a cross-sectional view of the toilet in the flushing and sewage discharge state of this application, viewed from the rear.

[0039] Figure 13 This is a top-view view of the toilet in the flushing and sewage discharge state according to this application;

[0040] Figure 14 This is a cross-sectional view of the toilet in the water seal replenishment state of this application, viewed from the rear.

[0041] Figure 15 This is a top-view view of the water seal replenishment state of the toilet in this application. Detailed Implementation

[0042] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0043] This application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive scheme as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive schemes to form another unique inventive scheme as defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application may be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

[0044] Furthermore, in describing representative embodiments, the specification may have presented the method and / or process as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. Other sequences of steps are possible, as will be understood by those skilled in the art. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims relating to the method and / or process should not be limited to the steps performed in the order written, as will be readily understood by those skilled in the art.

[0045] like Figures 1-15 As shown, this application provides a toilet 100, including a toilet body 1 and a toilet drain device 2 fitted to the toilet body 1. The toilet 100 can be a floor-standing toilet or a wall-hung toilet. This embodiment will be described in detail using a wall-hung toilet.

[0046] like Figures 1-3 As shown, the toilet body 1 includes a basin 11 and a mounting cavity 12. The mounting cavity 12 is located behind the basin 11 and can be arranged side by side with it (see Figure 1). Figure 2 The basin body 11 includes a receiving cavity 110 that converges from the top to the bottom rear of the toilet body 1, and a drain cavity 111 that communicates with the receiving cavity 110 and extends horizontally in a bent direction. The drain cavity 111 is provided with a drain outlet 1110 that communicates with the mounting cavity 12. The toilet body 1 of this application can be made of ceramic, but it can also be made of plastic, stainless steel or other materials.

[0047] The toilet body 1 also includes a brush ring interface (not labeled; in the attached drawing, the brush ring interface is connected to a brush ring jet 4) and a flushing system (not shown, but referenced in the prior art) connected to the brush ring interface. The flushing system may include a control valve, connecting water pipes, etc., and the flushing system can be installed in the mounting cavity 12 to save space. In this embodiment, the brush ring interface is located above the toilet body 1 and communicates with the basin 11, used for brush ring flushing and water replenishment of the basin 11. The mounting cavity 12 is provided with a pipe interface (not labeled) communicating with the outside, and the toilet 100 also includes a sewage pipe 13 installed at the pipe interface.

[0048] like Figures 4a-4c , Figures 5-8 , Figures 9a-9c As shown, the toilet flushing device 2 includes a flushing box 20, a flushing pipe 21 housed in the flushing box 20, and a drive device 22 installed in the flushing box 20 and driving the flushing pipe 21 to rotate.

[0049] The sewage box 20 has a receiving cavity 200 (see reference). Figure 7 It includes a waste inlet 20a and a waste outlet 20b, which are respectively connected to the receiving cavity 200. The waste inlet 20a is used for water or waste input, and the waste outlet 20b is used for waste output. The waste outlet 20b is tubular and extends to the rear of the toilet 100.

[0050] like Figure 5 As shown, the sewage box 20 includes a box body 20c and a rear cover 20d that is detachably assembled with the box body 20c and forms a receiving cavity 200. The box body 20c has a sewage inlet end 20a, and the rear cover 20d has a sewage outlet end 20b. The sewage box 20 is assembled by the box body 20c and the rear cover 20d, which facilitates the installation of components such as the sewage straight pipe 21. A sealing strip 20e is provided at the connection between the box body 20c and the rear cover 20d (see Figure 20). Figure 7 ), used to prevent sewage from leaking out of the drain box 20.

[0051] like Figure 7 , Figure 8 As shown, the drain pipe 21 is housed in the receiving cavity 200, and includes an input port 211 and an output port 212 disposed at opposite ends along its axial direction. The end face of the input port 211 is an inclined surface that is inclined relative to the axial direction of the drain pipe 21. The input port 211 is rotatably mounted on the waste inlet end 20a of the waste box 20. The waste inlet end 20a includes an outer port 201 and an inner port 202. The outer port 201 of the waste box 20 is fitted with the drain outlet 1110 of the toilet body 1 (see Figure 1). Figure 10 , Figure 11 The inner port 202 is rotatably fitted with the input port 211 of the sewage straight pipe 21.

[0052] The sewage straight pipe 21 includes a section that curves upwards towards the horizontal plane to achieve the first working state of the water seal (see reference). Figure 9a , Figure 9c , Figure 10 ) and extends towards the back of the toilet to achieve a second working state for back-to-back drainage. Figure 9b , Figure 11 ).

[0053] like Figure 11 As shown, in this embodiment, when the drain pipe 21 is in the second working state, the drain pipe 21 extends horizontally or slightly below the horizontal direction behind the toilet 100 to achieve draining from the rear of the toilet 100.

[0054] Such as 4a, 4b, Figure 5 , Figure 7 As shown, the drive device 22 is installed in the drain box 20 and connected to the drain pipe 21. The drive device 22 is configured to drive the drain pipe 21 to rotate to switch between a first working state and a second working state. The drive device 22 can realize the automatic rotation of the drain pipe 21. When sewage needs to be discharged (e.g., when a sewage discharge signal is received), the drive device 22 can drive the drain pipe 21 to rotate to a position extending towards the rear of the toilet (i.e., the drain pipe 21 is in the second working state), realizing the sewage discharge process. When sewage discharge is completed, the drive device 22 can drive the drain pipe 21 to rotate to a position tilted upwards in the horizontal direction (i.e., the drain pipe 21 is in the first working state), so that the toilet body 1 forms a water seal.

[0055] The drain box assembly 2 of this application embodiment designs the drain pipe 21 as a straight pipe, which is not easy to accumulate dirt. At the same time, the flipping surface (end face of input port 211) of the drain pipe 21 is designed as an inclined surface that is inclined to the axis of the drain pipe 21 for flipping and resetting. This allows the drain pipe 21 to tilt upward in the horizontal direction to form a water seal during the flipping process, and then extend towards the back of the toilet to discharge sewage, thus realizing the normal water seal and horizontal sewage discharge function of the toilet.

[0056] The inclined surface design between the drain pipe 21 and the drain box 20 in this embodiment of the application realizes the water seal requirement and the function of draining after flipping, ensuring the center height of the drain outlet end, which can be adapted to the height of the drain pipe currently hidden in the wall, realizing the direct replacement of the existing toilet without demolishing the wall and reinstalling, greatly reducing the user's installation cost.

[0057] Furthermore, it ensures that the waste outlet height is consistent with that of existing conventional toilets with water tanks, achieving the same level of consistency. Figure 8 As shown, the end face of the input port 211 of the sewage straight pipe 21 forms a first included angle a1 with the axial direction of the sewage straight pipe 21, and the range of the first included angle a1 is: 45°≤a1≤60°.

[0058] In this embodiment, the first included angle a1 is set between 45° and 60°. This prevents the drain pipe 21 from tilting downwards due to an excessively large first included angle a1, which would require a lower height for the input port 211 of the drain pipe 21, thus failing to meet the compatibility requirements of existing toilet drain outlets. Furthermore, it prevents the drain pipe 21 from tilting upwards after flipping to the second working state due to an excessively small first included angle a1, thus affecting the drain performance.

[0059] Therefore, the design of the first included angle a1 of the input port 211 of the sewage straight pipe 21 in the embodiment of this application not only enables the sewage straight pipe 21 to bend upward to form a water seal of a certain height in the first working state, but also enables it to extend to the back of the toilet in the second working state to realize the function of sewage discharge from the back of the toilet.

[0060] like Figure 7 As shown, the end face of the outer port 201 of the sewage input end 20a of the sewage box 20 is perpendicular to the horizontal sewage discharge direction, and the end face of the inner port 202 forms a second included angle a2 with the opposite direction of the sewage discharge direction. The range of the second included angle a2 is: 45°≤a2≤60°, so that the inner port 202 and the input port 211 can be assembled without interfering with the rotation of the sewage straight pipe 21 to achieve two working states.

[0061] like Figure 5 , Figure 7 As shown, the drain pipe 21 also includes a sealing oil seal ring 23 for sealing the connection between the inlet port 211 and the inner port 202, and a sealing gasket 24 for sealing the water inlet at the connection between the outer port 201 and the drain outlet 1110. Both the sealing oil seal ring 23 and the sealing gasket 24 are used to prevent leakage of dirt.

[0062] like Figure 8 As shown, the end face of the output port 212 of the drain pipe 21 is an inclined plane relative to the axial direction of the drain pipe 21, and the inclination direction of the end face of the output port 212 is opposite to the inclination direction of the end face of the input port 211. The end face of the output port 212 forms a third angle a3 with the axial direction of the drain pipe 21, and the third angle a3 is greater than the first angle a1. The angle range of the third angle a3 is 75°≤a3≤90°, so that when the drain pipe 21 is in a water-sealed state, the output port 212 is kept as flush as possible with the horizontal plane, and when discharging sewage to the back of the toilet, the output port 212 is oriented as far as possible towards the back of the toilet, without affecting the flipping movement of the drain pipe 21.

[0063] like Figures 5-7As shown, the drain pipe 21 has a connecting shaft 213, and the drive device 22 is installed on the outer wall of the drain box 20. The drive device 22 includes a motor 220, a transmission assembly 221, and a power cord 222. The transmission assembly 221 extends into the drain box 20 and is connected to the connecting shaft 213. The drain pipe 21 has a connecting shaft 213, and the axis of the connecting shaft 213 is perpendicular to the end face of the input port 211. This ensures that even with the toilet drain device 2 having a compact structure, the drive device 22 can still connect to the connecting shaft 213, driving the drain pipe 21 to rotate normally and switch between two states: raising the water seal and discharging waste backward.

[0064] like Figures 9a-9c As shown, in the initial state (refer to...) Figure 9a The drain pipe 21 is in its initial position, that is, in its first working state. The drain pipe 21 is tilted upwards in the horizontal direction to maintain the water seal state of the toilet body 1 (see...). Figure 10 When sewage needs to be discharged, the drive device 22 drives the sewage pipe 21 to rotate to the second working state. At this time, the sewage pipe 21 extends horizontally towards the back of the toilet or tilts slightly downward towards the back of the toilet (see...). Figure 9b The waste inside the basin 11 flows downwards under the influence of gravity and is discharged backwards through the drain pipe 21 (see...). Figure 11 After the sewage discharge is completed, the drive device 22 drives the sewage straight pipe 21 to rotate back to the first working state to reset, and a water seal is formed again in the basin 11 (see...). Figure 9c ).

[0065] The toilet 100 in this embodiment controls the drain pipe 21 in the drain box 20 to flip and reset. The entire drain pipe 21 has a smooth wall. The flipping surface (input port 211) is designed to form a first angle a1 with the drain axial direction of the pipe. The first angle a1 is in the range of 45°≤a≤60°. This allows the drain pipe 21 to switch from an upward tilted state to a draining state extending towards the back of the toilet during the 180° flip. The potential energy of the flushing water from the brush ring interface is used to achieve the normal water seal and horizontal rear drain function of the wall-mounted toilet 100. It is quiet and does not easily accumulate dirt.

[0066] In this embodiment, the drain box 20 is flat on the side of the receiving cavity 200 of the toilet 100 that receives the drain pipe to reduce the thickness of the drain box 20, and the length of the receiving cavity 200 is greater than its width.

[0067] In this embodiment, the drain box 20 is inclinedly disposed within the receiving cavity 200 so that the input port 211 is tilted towards the front and lower part of the toilet 100, thereby enabling the drain pipe 21 to be flipped in a smaller space, thus saving space.

[0068] like Figures 10-15 As shown, when the toilet 100 of this embodiment is working, when the flushing function is activated, water enters through the brush ring interface on the toilet body 1 to flush the surface of the basin 11 (see Figure 1). Figure 12 , Figure 13 After a certain delay, the drain pipe 21 in the drain box 20 is activated by the drive device 22 to rotate, and the drain pipe 21 rotates to the second working state (see...). Figure 11 The water level in the basin 11 of the toilet body 1 decreases, and the water is connected to the drain box 20 and the drain pipe 13 in the wall at the rear end. The water potential energy is used to discharge the waste in the basin 11 through the drain pipe 13, thus achieving the function of sewage discharge.

[0069] After the sewage discharge is completed, the sewage discharge pipe 21 in the sewage box 20 resets (returns to the first working state), and the water level in the basin 11 of the toilet body 1 increases due to the continuous water intake from the brush ring interface, replenishing the water required for the water seal in the toilet body 1. Figure 14 , Figure 15 When the water level meets the water seal requirements, the water inlet to the brush ring interface is closed, causing the water seal inside the toilet body 1 to return to the initial pre-use state of the toilet 100 (see...). Figure 10 ).

[0070] The drain outlet 1110 of the drain box assembly 2 implemented in this application is relatively high, which can meet the height matching of the universal wall-hung toilet 100 and can be directly replaced. The drain straight pipe 21 implemented in this application has no internal corners, which can better avoid blockage during the draining process.

[0071] The toilet drain device 2 implemented in this application is connected to the toilet body 1 and connected to the drain pipe 21 inside the wall. It is used to discharge sewage into the drain pipe 21 in the wall to realize the horizontal back-discharge function (see the arrow in the attached figure for direction).

[0072] The toilet flushing device 2 implemented in this application can effectively reduce the flushing noise during the flushing process and improve the user experience; it can also eliminate the spray nozzle, water tank, pressurization device and other structures in conventional solutions, thus reducing product costs and simplifying the installation process.

[0073] The sewage box 20 implemented in this application is provided with a receiving cavity 200, which can prevent dirt from contacting the mounting cavity 12, thereby preventing dirt leakage from the mounting cavity 12, and facilitating the installation of other structures, such as water inlet valves, in the mounting cavity 12 to save space.

[0074] like Figure 3As shown, the toilet 100 also includes a bracket 3 for suspending the toilet body 1. The bracket 3 is used to connect the toilet body 1 to the wall and suspend the toilet body 1 on the wall. The bracket 3 includes a pair of support legs 30, a connecting crossbar 31 connecting the pair of support legs 30, and a reinforcing crossbar 32. The bottom of the support legs 30 is provided with support feet 301 for supporting the ground. The support feet 301 are fixedly connected to the ground by connecting bolts or screws 302. The support legs 301 are fixedly connected to the wall by connecting bolts or screws 303. The connecting crossbar 31 is provided with multiple suspension rods 310 for suspending the toilet body 1.

[0075] The toilet flushing device 2 implemented in this application can be installed inside the mounting cavity 12, while the toilet body 1 does not need to be embedded in the wall. Unlike traditional wall-hung toilets that require the flushing system to be buried in a false wall, this eliminates the need to remove the false wall during maintenance and cleaning, making maintenance more convenient. Furthermore, the elimination of the water tank significantly reduces the weight and size of the wall-hung toilet 100, allowing the entire toilet 100 to be supported by a small, external wall-hung toilet bracket.

[0076] In this embodiment, the toilet 100 is mounted on the wall using a bracket 3, which avoids the traditional wall-mounted toilet installation method of chiseling or building a wall, greatly saving labor and material costs and reducing the skill requirements for installers. Furthermore, the external wall-mounted toilet bracket eliminates the need for wall breaking and repair during subsequent maintenance, thus reducing subsequent maintenance costs.

[0077] In the description of this application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "'mouth' structure", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing "this" application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0078] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0079] Although the embodiments disclosed in this application are as described above, the content described is merely for the purpose of understanding this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be defined by the appended claims.

Claims

1. A toilet flushing device, characterized in that, include: A waste disposal box has a receiving cavity and includes a waste inlet and a waste outlet communicating with the receiving cavity; A drain pipe, housed in the receiving cavity, includes an input port and an output port located at opposite ends along its own axial direction. The end face of the input port is an inclined surface relative to the axial direction, and the input port is rotatably mounted to the waste input end of the drain box. The drain pipe includes a first working state in which it curves upward in the horizontal direction to achieve a toilet water seal, and a second working state in which it extends backward in the toilet to achieve waste discharge from the rear of the toilet. A drive device is installed in the sewage box and connected to the sewage straight pipe. The drive device is configured to drive the sewage straight pipe to rotate to switch between the first working state and the second working state.

2. The barrel discharge device according to claim 1, characterized in that: When the drain pipe is in the second working state, the drain pipe extends horizontally or below the horizontal direction behind the toilet to discharge sewage to the rear of the toilet.

3. The toilet flushing device according to claim 1, characterized in that: The end face of the input port of the sewage straight pipe forms a first included angle a1 with the axial direction of the sewage straight pipe, and the angle range of the first included angle a1 is: 45°≤a1≤60°.

4. The toilet flushing device according to claim 3, characterized in that: The waste inlet of the waste box includes an outer port for fitting with the waste outlet of the toilet body, and an inner port that is rotatably fitted with the inlet port of the waste straight pipe. The end face of the inner port forms a second included angle a2 with the opposite direction of the sewage discharge direction, and the angle range of the second included angle a2 is: 45°≤a2≤60°.

5. The toilet flushing device according to claim 4, characterized in that: It also includes a seal located at the connection between the input port and the inner port, the seal being an oil seal ring.

6. The toilet flushing device according to claim 3, characterized in that: The end face of the output port of the sewage straight pipe is an inclined surface that is inclined relative to the axial direction. The inclination direction of the end face of the output port is opposite to the inclination direction of the end face of the input port, so that a water seal is formed on the end face of the output port in the first working state.

7. The toilet flushing device according to claim 6, characterized in that: The end face of the output port forms a third included angle a3 with the axial direction. The third included angle a3 is greater than the first included angle a1, and the angle range of the third included angle a3 is 75°≤a≤90°.

8. The toilet flushing device according to any one of claims 1-7, characterized in that: The sewage straight pipe is equipped with a connecting shaft, and the axis of the connecting shaft is perpendicular to the end face of the input port.

9. The toilet flushing device according to claim 8, characterized in that: The drive device is installed on the outer wall of the sewage box; the drive device includes a motor and a transmission assembly, the transmission assembly extends into the sewage box and is connected to the connecting shaft.

10. The toilet flushing device according to any one of claims 1-7, characterized in that: The waste outlet of the drain box is tubular and extends towards the rear of the toilet in a horizontal or slightly below-horizontal direction.

11. The toilet flushing device according to any one of claims 1-7, characterized in that: The sewage box includes a box body and a rear cover that is detachably assembled with the box body; the box body is provided with the sewage input end, and the rear cover is provided with the sewage output end.

12. A toilet, characterized in that: Includes: a toilet body, and a toilet flushing device as described in any one of claims 1-11, fitted to the toilet body; The toilet body includes a basin with a drain outlet, and the waste inlet of the toilet drain device is fitted with the drain outlet.

13. The toilet according to claim 12, characterized in that: The toilet body has an installation cavity located behind the basin, and the sewage box of the toilet sewage discharge device is located in the installation cavity; the sewage box is inclined in the installation cavity so that the input port of the sewage discharge pipe is inclined towards the front and lower part of the toilet.

14. The toilet according to claim 13, characterized in that: The inner cavity of the drain box that houses the drain pipe is flat in the lateral direction, and its length is greater than its width.

15. The toilet according to claim 12, characterized in that: It also includes a bracket for suspending the toilet body, the bracket being used to connect the toilet body to the wall.

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