CN113775012B

CN113775012B - Flushing device for toilet

Info

Publication number: CN113775012B
Application number: CN202111081419.0A
Authority: CN
Inventors: 顾国清
Original assignee: Shanghai Cangye Water Saving Technology Co ltd
Current assignee: Shanghai Cangye Water Saving Technology Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2023-03-17
Anticipated expiration: 2041-09-15
Also published as: CN113775012A

Abstract

The invention discloses a toilet flushing device which comprises a suction part, a water tank, a power slider and a switch. The suction portion comprises a shell, a piston cylinder, a piston and a pull rope, a sewage draining outlet is formed in one axial end of the shell, a trigger portion is arranged at the other axial end of the shell, a water draining channel is radially arranged on the shell, the piston cylinder is connected in the shell in an axial sliding mode, the piston is connected in the piston cylinder in an axial sliding mode, and one end of the pull rope is connected with the piston. The water tank is communicated with a drain pipe of the toilet bowl through a drain valve; the power slide block is connected with the water tank through the water tank transmission part, and the power slide block can move up and down along with the rise and fall of the water level in the water tank. A water inlet closing device for closing the water inlet of the water tank is arranged at the limit position of the upper end of the stroke of the power slide block, and a water inlet opening device for opening the water inlet of the water tank is arranged at the lower end of the stroke of the power slide block; the other end of the pull rope is connected with the power slide block. The switch is respectively connected with the drain valve and the trigger part.

Description

Flushing device for toilet

Technical Field

The invention belongs to the field of toilets, and particularly relates to a toilet flushing device.

Background

The patent application No. 201610626624.3 discloses a suction sewage discharging device of a toilet, and the patent application No. 201610626647.4 discloses a water pressure energy storage mechanism of the toilet. In order to save water and improve the sewage discharge effect of the toilet, the water pressure energy storage mechanisms and the suction sewage discharge device in the two patents can be simultaneously used in one toilet. The water pressure energy storage mechanism utilizes the water pressure of tap water to push the piston to compress the spring, converts the spring into elastic potential energy, and controls the suction and sewage discharge device by releasing the elastic potential energy to drive the power slide block. The combination of the two has the advantages of small volume, large acting force, simple structure and reliable work, and effectively improves the sewage discharge efficiency of the toilet.

However, the association between suction and sewage discharge and flushing cannot be accurately coordinated and controlled, so that the defects of unclean flushing, low sewage replacement rate, poor water saving effect and the like of the toilet bowl occur, and therefore, the technical popularization and application of the toilet bowl simultaneously using the water pressure energy storage mechanism and the suction and sewage discharge device are restricted.

Disclosure of Invention

In order to solve the problems, the invention provides a toilet flushing device which comprises a suction part, a water tank, a power slider and a switch.

The suction part comprises a shell, a piston cylinder, a piston and a pull rope, wherein a sewage draining outlet is formed in one axial end of the shell, a trigger part is arranged at the other axial end of the shell, a sewage draining channel is radially formed in the shell, the piston cylinder is axially and slidably connected into the shell, the piston is axially and slidably connected into the piston cylinder, and one end of the pull rope is connected with the piston;

the water tank is communicated with a drain pipe of the toilet bowl through a drain valve; the power sliding block is connected with the water tank through a water tank transmission part, so that the power sliding block can move up and down along with the lifting of the water level in the water tank; a water inlet closing device for closing the water inlet of the water tank is arranged at the limit position of the upper end of the stroke of the power slide block, and a water inlet opening device for opening the water inlet of the water tank is arranged at the lower end of the stroke of the power slide block; the other end of the pull rope is connected with the power slide block;

the switch is respectively connected with the drain valve and the trigger part;

the switch is started to drive the drain valve to be opened, the water tank drains water, the water level of the water tank is lowered, and the power slide block moves downwards; the power slide block moves downwards to drive the piston to move axially through the pull rope to open the sewage outlet, and drives the piston cylinder to move to open the sewage channel after the piston moves for positioning; the piston cylinder moves to a limit position to trigger the trigger part, and the trigger part drives the switch to be closed so as to drive the drain valve to be closed;

the water tank stops draining, the power slide block moves downwards to the limit position at the lower end of the stroke, the water inlet opening device is triggered, the water level in the water tank rises, the power slide block moves upwards, and the piston cylinder and the piston reset.

Preferably, the water tank further comprises a bracket, and the water tank is fixedly connected to the bracket;

the switch is connected with the drain valve through a first transmission part, a locking and unlocking part is arranged between the switch and the bracket and used for locking and unlocking the relative positions of the switch and the bracket; the trigger part is connected with the locking and unlocking part and used for unlocking the locking and unlocking part.

Preferably, the switch is a switch shaft, a switch shaft mounting seat is arranged on the water tank shell, a switch shaft mounting hole is formed in the switch shaft mounting seat, and the switch shaft penetrates through the switch shaft mounting hole and is in sliding connection with the switch shaft mounting hole.

Preferably, the drain valve includes:

the valve shell is internally provided with a valve inner cavity which is respectively communicated with the water tank water outlet and the drain pipe;

the valve core is arranged in the valve inner cavity;

one end of the valve shaft is connected with the valve core, and the other end of the valve shaft penetrates through the valve shell and extends out of the valve core to be connected with the first transmission part;

the first spring is arranged between the valve shaft and the valve shell and used for applying thrust to the valve shaft to enable the valve core to plug the connecting opening of the valve inner cavity and the drain pipe so as to close the drain valve.

Preferably, a valve seat is arranged at the communication position of the valve inner cavity and the drain pipe, the valve seat is matched with the valve core, and the valve core is seated on the valve seat to close the drain valve.

Preferably, the valve core is a conical valve core with a large upper part and a small lower part.

Preferably, the first transmission part is a lever, two ends of the lever are respectively rotatably connected with the switch shaft and the valve shaft, and the lever is rotatably connected with the valve shell at a branch point of the lever.

Preferably, the locking and unlocking portion includes:

the sliding rod is connected with the support in a sliding mode, and a second spring is arranged between the sliding rod and the support; a clamping block is arranged on the sliding rod;

the linkage rod is respectively connected with the bracket, the sliding rod and the switch shaft in a rotating way;

the lock catch is rotationally connected with the bracket, and a clamping groove matched with the clamping block is arranged on the lock catch;

one end of the tension spring is connected with the lock catch, and the other end of the tension spring spans the slide rod and is connected with the bracket and used for driving the lock catch to rotate towards the slide rod so as to lock the clamping connection of the clamping block and the clamping groove;

the switch shaft moves, the linkage rod drives the slide rod to overcome the resistance of the second spring to slide, the clamping block is clamped into the clamping groove to realize locking under the action of the tension spring, and therefore the relative position between the switch shaft and the support is locked.

Preferably, a sliding groove is formed in the support, the sliding rod is connected in the sliding groove in a sliding mode, and the second spring is arranged between the sliding groove and the sliding rod.

Preferably, the triggering portion comprises a push rod and a third spring, the push rod penetrates through the shell and is in sliding connection with the shell, a first end of the push rod is located in the shell, and a second end of the push rod extends out of the shell;

the third spring is arranged between the ejector rod and the shell;

in the downward moving process of the power slide block, the piston cylinder moves for a certain distance and then pushes the ejector rod to overcome the resistance of the third spring, the ejector rod moves towards the outside of the shell, the lock catch is driven by the second transmission part to overcome the resistance of the tension spring, the lock catch moves towards the direction far away from the slide rod, the clamping groove is separated from the clamping block, the slide rod moves and resets under the action of the second spring, then the linkage rod drives the switch shaft to move and reset, and the drain valve is closed through the first transmission part.

Preferably, the second transmission part is a shifting lever, the shifting lever is rotatably connected with the bracket, and two ends of the shifting lever are respectively in contact connection with the lock catch and one end of the ejector rod extending out of the shell;

the push rod moves towards the outside of the shell to drive the shifting rod to rotate, so that the lock catch is shifted to rotate towards the direction far away from the sliding rod.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:

according to the toilet flushing device, after the switch is started, the water tank discharges water, the power slide block moves downwards to drive the piston to move to finish pumping, the water tank still discharges water to flush after pumping is finished, and the piston cylinder triggers the trigger part to close the drain valve. The invention accurately coordinates and controls the association of suction pollution discharge and flushing, continues flushing after suction is finished, does not close the drain valve immediately but closes after delay, so that the invention has the advantages of clean flushing of the toilet bowl, high sewage replacement rate, good water-saving effect and the like, and ensures that the toilet bowl obtains the best effects of flushing and saving water.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

FIG. 1 is a schematic view of the overall structure of a toilet flushing device according to the present invention;

FIG. 2 is a schematic view of a suction portion according to the present invention;

fig. 3 is a schematic structural view of the water tank, the power slider and the water tank transmission part of the present invention.

Description of reference numerals:

101: a water tank; 102: a support; 103: a power slider; 104: a switch shaft; 105: a switch shaft mounting base; 106: a valve housing; 107: a valve core; 108: a valve shaft; 109: a first spring; 110: a drain pipe; 111: a seal ring; 112: a lever; 113: a slide bar; 114: a linkage rod; 115: locking; 116: a tension spring; 117: a second spring; 118: a chute; 119: a top rod; 120: a third spring; 121: a deflector rod; 122: a valve seat; 123: a pulley;

210: a piston cylinder; 211: a locking sleeve seat; 212: a spring seat guide sleeve; 213: an inner edge; 214: a dead bolt free bearing; 220: a first piston; 221: a first piston rod; 222: a spring guide seat; 223: an outer edge; 224: pulling a rope; 230: a housing; 231: a sewage draining outlet; 232: a water drainage channel; 233: a piston rod guide sleeve; 234: a guide cylinder; 235: a first locking groove; 241: a first bolt; 242: a locking sleeve; 243: a cover plate; 244: a groove; 245: a first spring seat; 246: a guide slide; 251: pumping the first spring; 252: pumping the second spring; 253: pumping the third spring;

301: a second piston; 302: a second piston rod; 303: a second lock tongue; 304: a second locking groove; 305: wedge blocks; 306: a first spring of the water tank; 307: a water tank second spring; 308: briquetting; 309: a slider lock seat; 310: a second spring seat; 311: a third spring of the water tank; 312: and (6) a plug.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "a" means not only "only one of this but also a case of" more than one ".

Referring to fig. 1 to 3, the present embodiment provides a toilet flushing device including a suction part, a water tank 101, a power slider 103, and a switch. The pumping part comprises a shell 230, a piston cylinder 210, a piston and a pull rope 224, a sewage draining outlet 231 is arranged at one axial end of the shell 230, a triggering part is arranged at the other axial end of the shell 230, a sewage draining channel 232 is radially arranged on the shell 230, the piston cylinder 210 is axially and slidably connected into the shell 230, the piston is axially and slidably connected into the piston cylinder 210, and one end of the pull rope 224 is connected with the piston.

The water tank 101 is communicated with a water drainage pipe 110 of the toilet bowl through a drainage valve; the power slide block 103 is connected with the water tank 101 through the water tank transmission part, so that the power slide block 103 can move up and down along with the water level in the water tank 101. A water inlet closing device for closing the water inlet of the water tank 101 is arranged at the limit position of the upper end of the stroke of the power slide block 103, and a water inlet opening device for opening the water inlet of the water tank 101 is arranged at the lower end of the stroke of the power slide block 103; the other end of the pull rope 224 is connected with the power slider 103. The switch is respectively connected with the drain valve and the trigger part.

The switch is started to drive the drain valve to be opened, the water tank 101 drains water, the water level of the water tank 101 is lowered, and the power slide block 103 moves downwards; the power slide block 103 moves downwards to drive the piston to move axially through the pull rope 224 to open the sewage outlet 231, and drives the piston cylinder 210 to move to open the sewage channel 232 after the piston moves for positioning; the piston cylinder 210 moves to the limit position to trigger the trigger part, and the trigger part drives the switch to be closed, so that the drain valve is driven to be closed.

The water tank 101 stops draining, the power slide block 103 moves downwards to the limit position at the lower end of the stroke, the water inlet opening device is triggered, the water level in the water tank 101 rises, the power slide block 103 moves upwards, and the piston cylinder 210 and the piston reset.

After the switch is started, the water tank 101 discharges water, the power slide block 103 moves downwards to drive the piston to move to finish suction, and the water tank 101 still discharges water to flush after the suction is finished until the piston cylinder 210 triggers the trigger part to close the drain valve. The toilet flushing device provided by the embodiment can accurately coordinate and control the association between suction pollution discharge and flushing, flushing is continued after suction is finished, the drain valve is not closed immediately but closed later, so that the toilet flushing device provided by the embodiment has the advantages of clean toilet flushing, high sewage replacement rate, good water saving effect and the like, and the toilet obtains the best flushing and water saving effects.

The structure of the present embodiment will now be explained.

In this embodiment, the water tank 101 is attached to a bracket 102, and the water tank 101 is located above the bracket 102. The switch is connected with the drain valve through the first transmission part, and a locking and unlocking part is arranged between the switch and the bracket 102 and used for locking and unlocking the relative positions of the switch and the bracket 102; the trigger part is connected with the locking and unlocking part and used for unlocking the locking and unlocking part.

The suction part is used for performing suction work of the toilet bowl, and is provided with a piston structure, and a linkage structure between the power slider 103 and the water level of the water tank 101, i.e., a piston structure is also provided in the water tank transmission part, so that the piston in the suction part is referred to as a first piston 220 in the following description. The suction part and the water tank transmission part can be realized in various ways, and one of the ways is listed in the embodiment.

Referring to fig. 2 (in which the suction portion of fig. 1 and the suction portion of fig. 2 are at different angles), in the suction portion, a piston rod guide sleeve 233 and a guide cylinder 234 are axially disposed within the housing 230. A piston rod guide 233 is provided at the center of the housing 230; two guide cylinders 234 are disposed in the housing 230, and the two guide cylinders 234 are symmetrically disposed about the piston rod guide sleeve 233.

One end of the piston cylinder 210 abuts against the inner end surface (i.e., the end surface on which the drain 231 is disposed) of the housing 230, so that the drain 231 is communicated with the inside of the piston cylinder 210, and the side wall of the piston cylinder 210 seals the drainage channel 232. The other end of the piston cylinder 210 is provided with a locking sleeve seat 211 sleeved on the piston rod guide sleeve 233 and a spring seat guide sleeve 212 extending into the guide cylinder 234, the locking sleeve seat 211 can axially move along the outer side wall of the piston rod guide sleeve 233, and the spring seat guide sleeve 212 can axially move along the inner side wall of the guide cylinder 234.

One end of the first piston 220 abuts against the end surface of the housing 230 where the drain 231 is located, and the first piston 220 seals the drain 231; the other end of the first piston 220 is provided with a first piston rod 221 extending into the piston rod guide sleeve 233 and a spring guide 222 extending into the spring seat guide sleeve 212, and the first piston rod 221 can axially move along the inner side wall of the piston rod guide sleeve 233 and the spring guide 222 can axially move along the inner side wall of the spring seat guide sleeve 212.

A first suction spring 251 is disposed between the spring guide base 222 and the spring base guide 212, and a second suction spring 252 is disposed between the first piston rod 221 and the piston rod guide 233. When the first piston 220 moves to the left, the first piston rod 221 moves to the left in the piston rod guide 233 and compresses the suction second spring 252, and the spring guide 222 moves to the left in the spring seat guide 212 and compresses the suction first spring 251.

An outer edge 223 is arranged at one end, extending into the spring seat guide sleeve 212, of the spring guide seat 222, an inner edge 213 is arranged at the connecting end of the spring seat guide sleeve 212 and the spring guide seat 222, and the outer edge 223 is matched with the inner edge 213 to prevent the spring guide seat 222 from being separated from the spring seat guide sleeve 212 in the moving process, so that telescopic connection is realized.

A locking bolt assembly is further arranged between the locking sleeve seat 211 and the piston rod guide sleeve 233, and the locking bolt assembly comprises a first locking bolt 241, a locking sleeve 242, a cover plate 243 and a suction third spring 253. Specifically, an annular groove is formed in one circle of the side wall of the locking sleeve seat 211, the locking sleeve 242 is a cylindrical body and is arranged in the annular groove, and the locking sleeve 242 can axially slide along the inner wall of the annular groove. A cover plate 243 covers the end surface of the notch at the right end of the annular groove to prevent the locking sleeve 242 from coming off the annular groove. One end of the locking sleeve 242 is provided with a first spring seat 245, and a suction third spring 253 is axially arranged between the first spring seat 245 and the annular groove. The other end of the locking sleeve 242 is provided with a guide sliding seat 246, and the guide sliding seat 246 extends out of the cover plate 243; a mounting hole is formed in the inner wall of the locking sleeve holder 211, a bolt hinge holder 214 is arranged in the mounting hole, and a first bolt 241 is mounted on the bolt hinge holder 214; the inner wall of the locking sleeve 242 is provided with a groove 244, and the outer wall of the piston rod guide 233 is provided with a first locking groove 235.

One end of the pull rope 224 is connected to the axis of the first piston rod 221, led out by the piston rod guide sleeve 233, and is connected to the power slider 103 after being adjusted to a proper direction by the reversing element. In this embodiment, the direction-changing member may adopt the pulley 123, and in other embodiments, there may be other options, which are not limited herein.

The working principle of the suction part is as follows:

before sewage is discharged, one end of the piston cylinder 210 abuts against the inner end face, provided with the sewage discharge port 231, of the shell 230, and the end face of the first piston 220 seals the sewage discharge port 231, even if the sewage discharge port 231 is disconnected from the sewage. When sewage needs to be drained, the pull rope 224 is pulled leftwards, the pull rope 224 drives the first piston 220 to move leftwards in the cylinder sleeve by overcoming the resistance of the first suction spring 251 and the second suction spring 252, and at the moment, negative pressure is formed in the piston cylinder 210 at the right end of the first piston 220, so that water in the sewage draining port 231 enters the piston cylinder 210. The spring guide 222 moves within the spring seat guide 212 and the first piston rod 221 moves within the piston rod guide 233.

The first piston 220 continues to move to the left, and when the left end face of the first piston 220 touches the end face of the locking sleeve 242, the first piston 220 and the locking sleeve 242 continue to move to the left against the resistance of the suction third spring 253. When the groove 244 on the locking sleeve 242 is moved to the position of the first latch tongue 241, the first latch tongue 241 is ejected from the first latch groove 235 on the housing 230, so that the locking between the locking sleeve holder 211 and the piston rod guide sleeve 233 is unlocked, i.e. the piston cylinder 210 and the housing 230 are unlocked. At this time, the end surface of the first piston 220 abuts against the piston rod guide sleeve 233 to stop moving, the elastic force of the first suction spring 251 is released, the piston cylinder 210 moves left under the elastic force of the first suction spring 251, and the locking sleeve holder 211 and the spring seat guide sleeves 212 on the two sides on the piston cylinder 210 slide on the piston rod guide sleeve 233 and in the two guide cylinders 234 respectively. The piston cylinder 210 moves leftward to gradually open the sewage channel 232, so that the sewage drain 231 is communicated with the sewage channel 232, sewage is discharged from the sewage channel 232, and the washing is completed.

After the sewage drainage is finished, the pull rope 224 is loosened, the first piston 220 moves rightwards in the piston cylinder 210 under the action of the first suction spring 251 and the second suction spring 252, when the outer edge 223 of the spring guide base 222 is clamped with the inner edge 213 of the spring base guide sleeve 212 on the piston cylinder 210, and under the continuous action of the second suction spring 252, the first piston 220 drives the piston cylinder 210 to move rightwards. When the piston cylinder 210 and the first piston 220 move to be attached to the inner end face of one end of the shell 230, which is provided with the sewage draining port 231, the sewage draining port 231 is closed, and the sewage draining channel 232 is disconnected; meanwhile, the first latch tongue 241 hinged to the latch tongue hinge base 214 of the piston cylinder 210 reaches the position of the first latch groove 235, and since the first piston 220 moves rightward while the first piston 220 releases the pressing of the locking sleeve 242, the locking sleeve 242 moves rightward in the cover plate 243 (the cover plate 243 is an annular structure as viewed from the whole of the suction part) through the guide slide base 246 under the action of the suction third spring 253, the first latch tongue 241 is pressed by the locking sleeve 242, retreats from the groove 244 of the locking sleeve 242 and is clamped in the first latch groove 235 again, and the piston cylinder 210 and the housing 230 are locked, and the resetting is completed.

Referring to fig. 3, in the present embodiment, the water tank driving part includes a second piston 301, a second piston rod 302, a second latch bolt 303, and a wedge 305. The cistern 101 housing is similar to a piston cylinder, a second piston 301 is disposed within the cistern 101 housing, and a second piston rod 302 is connected to the second piston 301; the second piston 301, or the part moving synchronously with the second piston 301, is provided with a cistern first spring 306 between the cistern 101 housing. The power slide block 103 is arranged in the bracket 102, and a water tank second spring 307 is arranged between the power slide block and the bracket 102. The power slide 103 is movable along the carriage 102. One end of the second piston rod 302 movably penetrates through the shell of the water tank 101, the bracket 102 and the power slide block 103 and is connected with a press block 308.

A bolt mounting hole is formed in the side wall of the bracket 102, and the second bolt 303 is arranged in the bolt mounting hole and is rotatably connected with the bolt mounting hole. The outer side wall of the power slide block 103 is provided with a second lock groove 304 matched with the second lock tongue 303. The second latch 303 is locked in the second locking groove 304, so that the power slider 103 and the bracket 102 are locked and fixed, and at this time, the second spring 307 of the water tank is compressed. The outer side of the side wall of the bracket 102 is formed with a slide lock seat 309 corresponding to the bolt mounting hole, and the wedge block 305 is disposed in the slide lock seat 309 and can move along the slide lock seat 309. A second spring seat 310 is provided in the slider lock seat 309, a tank third spring 311 is provided between the wedge 305 and the second spring seat 310, and the wedge 305 moves along the slider lock seat 309 compressing the tank third spring 311. The slide block lock seat 309 is communicated with a mounting hole of the second bolt 303, one side of the second bolt 303 is propped against the side wall of the power slide block 103, and the other side is propped against the side wall of the upper end of the wedge block 305. The side wall of the upper end of the wedge block 305 opposite to the second bolt 303 is provided with an inclined surface, and the lower end of the wedge block 305 is provided with a plug 312 extending into the bracket 102.

The water tank 101 is drained, the water level is lowered, at the moment, the power slide block 103 and the bracket 102 are locked by the second bolt 303, and as the force of water in the water tank 101 on the second piston 301 is reduced, the second piston 301 moves downwards together with the second piston rod 302 and the pressing block 308 under the thrust action of the first spring 306 of the water tank; when the pressing block 308 moves downwards to contact the plug 312, the plug 312 is pressed to drive the wedge block 305 to move downwards, and the third spring 311 of the water tank is compressed; the wedge block 305 moves downwards, the second bolt 303 slides across the inclined plane, the wedge block 305 does not abut against the second bolt 303 any more, so that the second bolt 303 is separated from the second lock groove 304, the power slider 103 is separated from the second bolt 303, and the power slider 103 moves downwards under the action of the second spring 307 of the water tank. When water is supplied to the water tank 101, the water level rises, the force of the water in the water tank 101 on the second piston 301 is increased, the resistance of the first spring 306 of the water tank and the second spring 307 of the water tank is overcome, the second piston 301, the second piston rod 302, the pressing block 308 and the power slide block 103 are driven to move upwards together, the pressing block 308 leaves the plug 312, the wedge block 305 moves upwards under the thrust action of the third spring 311 of the water tank, and finally the second locking tongue 303 is clamped into the second locking groove 304 again to lock the positions of the power slide block 103 and the bracket 102.

Referring to fig. 1, in the present embodiment, the switch may be a switch shaft 104. A switch shaft mounting seat 105 is arranged on a shell of the water tank 101, a switch shaft mounting hole is formed in the switch shaft mounting seat 105, and a switch shaft 104 penetrates through the switch shaft mounting hole and is in sliding connection with the switch shaft mounting hole. The switch shaft 104 may be vertically disposed and the switch shaft 104 may be actuated by depressing the switch shaft 104 to move the switch shaft 104 downward. To increase the stability of the switch shaft 104 when it moves, two switch shaft mounts 105 may be provided in this embodiment.

The drain valve includes a valve housing 106, a valve core 107, a valve shaft 108, and a first spring 109. A valve inner cavity is arranged in the valve housing 106 and is respectively communicated with the water outlet of the water tank 101 and the water discharge pipe 110. A valve core 107 is disposed within the valve interior cavity. One end of the valve shaft 108 is connected to the valve core 107, and the other end thereof penetrates through the valve housing 106 and extends out to be connected to the first transmission portion. The first spring 109 is disposed between the valve shaft 108 and the valve housing 106, and is used for applying a pushing force to the valve shaft 108, so that the valve core 107 blocks a connection port between the valve cavity and the drain pipe 110 to close the drain valve.

Further, a valve seat 122 can be arranged at the communication position of the valve inner cavity and the drain pipe 110, the valve seat 122 is matched with the valve core 107, and the valve core 107 is pressed on the valve seat 122 to realize the closing of the drain valve; the valve core 107 is a tapered valve core 107 with a large upper part and a small lower part, and correspondingly, the valve seat 122 is a tapered valve seat 122 matched with the valve core 107. A sealing ring 111 is provided on the tapered side of the valve core 107. The lower end face of the valve core 107 is seated on the disk bottom ring of the conical valve seat 122 to bear the hydraulic pressure in the valve box, so that the sealing ring 111 on the valve core 107 is only sealed by the elasticity of elastic substances and is not compacted by the component force of the conical surface, the force for opening the drain valve is reduced, and the service life of the sealing ring 111 is prolonged.

The first transmission part may be a lever 112, two ends of the lever 112 are respectively connected to the switch shaft 104 and the valve shaft 108, and the lever 112 is connected to the valve seat 110 at a pivot point. Thus, the switch shaft 104 moves down to drive the lever 112 to rotate around the pivot, so as to drive the valve shaft 108 to move up, the valve shaft 108 moves up to drive the valve core 107 to leave the valve seat 110, and the drain valve is opened. When the switch shaft 104 moves upwards to reset, the lever 112 is driven to rotate to drive the valve shaft 108 to drive the valve core 107 to seat on the valve seat 122, and the drain valve is closed.

The locking and unlocking part includes a slide bar 113, a linkage bar 114, a lock catch 115, and a tension spring 116. The sliding rod 113 is connected with the bracket 102 in a sliding manner, and a second spring 117 is arranged between the sliding rod 113 and the bracket 102; a clamping block is arranged on the sliding rod 113. The linkage rod 114 is respectively connected with the bracket 102, the sliding rod 113 and the switch shaft 104 in a rotating manner, and specifically, the connection position of the linkage rod 114 and the sliding rod 113 is located between the connection position of the switch shaft and the connection position of the bracket 102. The lock catch 115 is rotatably connected with the bracket 102, and a clamping groove matched with the clamping block is arranged on the lock catch 115. One end of the tension spring 116 is connected with the lock catch 115, and the other end of the tension spring crosses over the sliding rod 113 to be connected with the bracket 102, and is used for driving the lock catch 115 to rotate towards the sliding rod 113 so as to lock the clamping of the clamping block and the clamping groove. Specifically, the bracket 102 may be provided with a sliding slot 118, the sliding rod 113 is slidably connected in the sliding slot 118, and the second spring 117 is disposed between the sliding slot 118 and the sliding rod 113.

The switch shaft 104 moves, the sliding rod 113 is driven by the linkage rod 114 to slide in the sliding groove 118 against the resistance of the second spring 117, so that the clamping block is clamped into the clamping groove to realize locking under the action of the tension spring 116, and the relative position between the switch shaft 104 and the bracket 102 is locked.

The trigger part comprises a top rod 119 and a third spring 120, the top rod 119 penetrates through the shell 230 and is in sliding connection with the shell 230, the first end of the top rod 119 is positioned in the shell 230, and the second end of the top rod 119 extends out of the shell 230; the third spring 120 is disposed between the rod 119 and the housing 230.

In the downward moving process of the power slider 103, the piston cylinder 210 moves for a certain distance to push the top rod 119 to move towards the outside of the housing 230 against the resistance of the third spring 120, the lock catch 115 is driven by the second transmission part to rotate towards the direction far away from the sliding rod 113 against the resistance of the tension spring 116, the clamping groove is separated from the clamping block, the sliding rod 113 moves and resets under the action of the second spring 117, the linkage rod 114 drives the switch shaft 104 to move and reset, and then the drain valve is closed through the lever 112.

The second transmission part may be a shift lever 121, the shift lever 121 is rotatably connected to the bracket 102, and two ends of the shift lever 121 respectively contact and connect with the latch 115 and one end of the top bar 119 extending out of the housing 230. The push rod 119 moves towards the outside of the housing 230, and drives the shift lever 121 to rotate, so that the shift catch 115 rotates towards a direction away from the sliding rod 113.

The flushing and resetting process of the toilet flushing device provided by the embodiment comprises the following steps:

when the switch shaft 104 is pressed, the driving lever 112 rotates, so that the valve shaft 108 and the valve core 107 are driven to move upwards against the first spring 109, the valve core 107 leaves the valve seat 122, and the drain valve is opened. Meanwhile, the switch shaft 104 moves downwards to force the linkage rod 114 to rotate, so that the sliding rod 113 moves downwards in the sliding groove 118 against the second spring 117, and when the latch on the sliding rod 113 moves to the latch groove, the lock catch 115 rotates under the action of the tension spring 116, so that the latch is firmly latched in the latch groove. At this time, the valve core 107, the valve shaft 108, the lever 112, the switch shaft 104, the linkage rod 114 and the sliding rod 113 are all locked, and the drain valve is in an open state.

When the drainage valve is opened, water in the water tank 101 flows into the toilet bowl through the drainage pipe 122 to flush the toilet bowl, the water level in the water tank 101 is lowered, and the power slide block 103 moves downwards through the water tank transmission part. The power slide block 103 moves downwards, the first piston 220 is driven to move axially by the pulling rope 224, the sewage outlet 231 is opened, negative pressure is formed in the piston cylinder 210 at the tail end of the siphon pipe of the toilet, and water in the pipeline is enabled to siphon quickly; when the first piston 220 moves a certain distance, it drives the piston cylinder 210 to move axially, thereby opening the drainage channel 232.

After the piston cylinder 210 moves for a certain distance, the push rod 119 is pushed, the push rod 119 moves outwards towards the shell 230, the push rod 119 moves outwards, the push rod 119 abuts against and pushes the shifting rod 121, the shifting rod 121 rotates, the lock catch 115 overcomes the resistance of the tension spring 116 to rotate, and the clamping groove releases the clamping block.

At this time, the sliding rod 113 is unlocked, and under the thrust of the second spring 117, the sliding rod 113 moves upwards, so that the linkage rod 114 is forced to rotate, and the switch shaft 104 is driven to move upwards and reset. The switch shaft 104 moves upwards and returns to rotate the lever 112, the valve core 107 fixed on the valve shaft 108 moves downwards under the action of the first spring 109, the lower end face of the valve core 107 is tightly attached to the disk bottom ring of the valve seat 110, the sealing ring 111 abuts against the conical side face of the valve seat 110, the drain valve is closed, and the water tank 101 stops draining.

At this time, when the power slider 103 moves down to the stroke lower end limit position, the drain 231 is completely opened, and the drain 231 is communicated with the drainage channel 232, so that the sewage is discharged from the drainage channel 232, and the flushing is completed. Simultaneously, the drain valve is closed, and power slider 103 triggers into water opening device, and water tank 101 water injection. As the water level in the tank 101 moves upward, the power slide 103 moves upward, and the piston cylinder 210 and the first piston 220 are reset. When the power slide block 103 moves upwards to the limit position at the upper end of the stroke, the water inlet closing device is triggered, and the water tank 101 is filled with water.

The present embodiment closes the drain valve by the movement of the piston cylinder 210, and closes the valve after the toilet bowl opens the drain outlet 231, so that the toilet bowl obtains the best effect of flushing and saving water.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, they are still within the scope of the present invention provided that they fall within the scope of the claims of the present invention and their equivalents.

Claims

1. A toilet flushing device, comprising:

the suction part comprises a shell, a piston cylinder, a piston and a pull rope, wherein a sewage draining outlet is formed in one axial end of the shell, a trigger part is arranged at the other axial end of the shell, a water draining channel is radially formed in the shell, the piston cylinder is axially and slidably connected into the shell, the piston is axially and slidably connected into the piston cylinder, and one end of the pull rope is connected with the piston;

the switch is respectively connected with the drain valve and the trigger part;

the water tank is fixedly connected with the bracket;

the water tank stops draining, the power slide block moves downwards to a limit position at the lower end of a stroke, the water inlet opening device is triggered, the water level in the water tank rises, the power slide block moves upwards, and the piston cylinder and the piston reset;

the switch is a switch shaft and is connected with the water tank in a sliding manner; the switch shaft is connected with the drain valve through a first transmission part, a locking and unlocking part is arranged between the switch shaft and the bracket and used for locking and unlocking the relative positions of the switch shaft and the bracket; the trigger part is connected with the locking and unlocking part and is used for unlocking the locking and unlocking part;

the locking and unlocking portion includes:

the sliding rod is connected with the bracket in a sliding manner, and a second spring is arranged between the sliding rod and the bracket; a clamping block is arranged on the sliding rod;

2. The toilet flushing device of claim 1, wherein the tank housing is provided with a switch shaft mounting seat, the switch shaft mounting seat is provided with a switch shaft mounting hole, and the switch shaft penetrates through and is slidably connected with the switch shaft mounting hole.

3. The toilet flushing device of claim 2, wherein the drain valve comprises:

the valve core is arranged in the valve inner cavity;

the first spring is arranged between the valve shaft and the valve shell and used for applying thrust to the valve shaft to enable the valve core to plug the connecting port of the valve inner cavity and the drain pipe so as to close the drain valve.

4. The toilet flushing device according to claim 3, wherein a valve seat is arranged at the communication position of the valve inner cavity and the drain pipe, the valve seat is matched with the valve core, and the valve core is seated on the valve seat to close the drain valve.

5. The toilet flushing device of claim 3, wherein the valve core is a tapered valve core with a large top and a small bottom.

6. The toilet flushing device of claim 3, wherein the first transmission part is a lever, two ends of the lever are respectively and rotatably connected with the switch shaft and the valve shaft, and the lever is rotatably connected with the valve housing at a fulcrum of the lever.

7. The toilet flushing device of claim 1, wherein the bracket has a sliding slot, the sliding rod is slidably connected in the sliding slot, and the second spring is disposed between the sliding slot and the sliding rod.

8. The toilet flushing device of claim 1, wherein the triggering portion includes a push rod and a third spring, the push rod is inserted through the housing and slidably connected to the housing, a first end of the push rod is located in the housing, and a second end of the push rod extends out of the housing;

the third spring is arranged between the ejector rod and the shell;

9. The toilet flushing device according to claim 8, wherein the second transmission part is a lever, the lever is rotatably connected with the bracket, and two ends of the lever are respectively in contact connection with the latch and one end of the ejector rod extending out of the housing;