CN214614407U - Water pressure starting drive of drain valve - Google Patents

Abstract

The utility model provides a water pressure starting drive of drain valve, including piston barrel, piston rod, piston, on the drain valve body of drain valve was arranged in to the piston barrel, the lower extreme of piston rod was arranged in the piston barrel with the piston connection, the upper end of piston rod pushed away the water sealing piece that supports the drain valve and is left to unseal the mouth of a river, was equipped with reset spring between the upper portion of piston rod and piston barrel, formed liquid seal between the section of thick bamboo wall of piston and piston barrel, formed the water pressure chamber between the lower part of piston and piston barrel, the bottom of piston barrel is equipped with the mouth of a river and communicates with each other with the water pressure chamber. The utility model discloses a water pressure starting drive's of closestool drain valve utilizes hydraulic piston principle to convert the water pressure at water pressure chamber water source into great thrust on the piston rod to can open the drain valve drainage of various structures.

Description

Water pressure starting drive of drain valve

Technical Field

The utility model relates to a closestool drain valve starting drive, especially a water pressure starting drive of drain valve.

Background

The water discharge valve is a device for opening water in a water tank of the closestool to flush the closestool, a button on a cover of the water tank of the closestool is pressed, a push rod at the lower end of the button props against a key on the water discharge valve, so that an inner core pipe of the water discharge valve is lifted, and a water sealing sheet at the bottom of the inner core pipe leaves a water outlet of the water discharge valve to realize water discharge.

The device for lifting the inner core pipe in the prior art mainly has a key and lever combined structure and a pull rope and lever combined structure, namely, the key or the pull rope on the drain valve body acts on one end of a rotating rod, the other end of the rotating rod acts on the inner core pipe, and the rotating rod is driven to rotate by pressing the key or pulling the pull rope, so that the inner core pipe is driven to be lifted on the drain valve body to realize drainage.

Along with the development of the technology, a water pressure starting structure appears in the industry, and the water pressure is utilized to enable the liquid bag to expand to drive the lever to rotate so as to lift the inner core pipe of the drain valve and start the drain valve to drain water.

Because the key or the pull rope and the lever structure are used for lifting the inner core tube, larger acting force is needed, and light feeling can not be brought to people. Although the water pressure is utilized to open the drain valve, the pressing force is saved, but the lever structure is still adopted, and the structure is complex. And the problems that the water injection of the liquid bag cannot be saturated, the expansion of the liquid bag is too small, the height for lifting the inner core pipe is not enough, the set drainage time cannot be reached and the like exist.

In view of this, the present inventors have conducted a systematic study on a water pressure-actuated drain valve, and have innovated a drain valve structure, a water pressure actuation structure, a water intake control structure, a drain control, a water intake/discharge switching structure, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water pressure starting drive of drain valve, this water pressure starting drive utilize the water pressure at water source to start the drain valve drainage, but also can convert water pressure to great lifting force start drain valve.

The technical scheme adopted for achieving the purpose is as follows:

the water pressure starting device of the drain valve comprises a piston cylinder, a piston rod and a piston, wherein the piston cylinder is arranged on a drain valve body of the drain valve, the lower end of the piston rod is arranged in the piston cylinder and connected with the piston, the upper end of the piston rod pushes a water sealing sheet of the drain valve to separate from a water opening, a return spring is arranged between the piston rod and the upper portion of the piston cylinder, liquid seal is formed between the piston and the cylinder wall of the piston cylinder, a water pressure cavity is formed between the piston and the lower portion of the piston cylinder, and the bottom of the piston cylinder is provided with a water opening communicated with the water pressure cavity.

Further, the upper end of the piston cylinder is provided with a cylinder cover, the cylinder cover is provided with a through hole for the piston rod to penetrate out, the reset spring is sleeved on the piston rod, the upper end of the reset spring is abutted against the cylinder cover, and the lower end of the reset spring is abutted against the piston.

Further, the water gap is arranged on the side wall of the bottom of the piston cylinder.

Further, the bottom of the piston cylinder is provided with a pressure relief opening, the pressure relief opening is provided with a pressure limiting valve, the pressure limiting valve comprises a gasket, a pushing and supporting piece and a pushing and supporting spring, the gasket is arranged on the pushing and supporting piece, the pushing and supporting spring is arranged on a mounting seat of the drainage valve body of the drainage valve, and the pushing and supporting spring abuts against the pushing and supporting piece to enable the gasket to seal the pressure relief opening.

Furthermore, the water inlet is connected with a water inlet and outlet switching control valve through a connecting water pipe, the water flowing into or flowing out of the water pressure cavity is switched and controlled through the water inlet and outlet switching control valve, and the water inlet and outlet switching control valve comprises a valve body, a water inlet back pressure valve, a water draining back pressure valve and a buoyancy switching mechanism; the valve body is provided with a water inlet waterway and a water outlet waterway, a water inlet pipeline of the water inlet waterway is connected to a water source, a water outlet pipeline of the water inlet waterway is connected to the water pressure starting device and supplies water to the water pressure starting device, the water inlet backpressure valve is connected between the water inlet pipeline and the water outlet pipeline, a water inlet pipeline of the water outlet waterway is connected to the water pressure starting device, a water drain pipeline of the water outlet waterway is communicated into the toilet water tank and supplies drain water to the water pressure starting device, and the water drain backpressure valve is connected between the water inlet pipeline and the water drain pipeline; the buoyancy switching mechanism is arranged on the valve body, the water inlet back pressure valve is opened in advance when the water supply pressure starting device feeds water, the water drainage back pressure valve is kept closed at the same time, and the water inlet back pressure valve is closed and the water drainage back pressure valve is opened at the same time when the water supply pressure starting device drains water.

Further, buoyancy switching mechanism include actuating lever, flexible ejector pin, trace, keg float, the actuating lever locate the valve body top and be used for opening into water the back pressure valve, flexible ejector pin slide locate on the valve body and be used for closing into water the back pressure valve, the trace articulate on the valve body, the one end of trace is used for blocking the slip of flexible ejector pin on the valve body, the other end and the keg float sliding connection of trace, the keg float articulates on the valve body, the keg float is losing buoyancy and swings down and opens sluicing back pressure valve, drives the trace and rotates and withdraw from the card system to flexible ejector pin simultaneously, the keg float is swung up under buoyancy and is used for closing sluicing back pressure valve.

Further, the water inlet back pressure valve is arranged on the valve body and comprises a water inlet valve seat, a water inlet valve cover, a water inlet water stop pad and a lifting rod, the water inlet valve seat is positioned at the joint of the water inlet pipeline and the water outlet pipeline, a port which is intersected with the water inlet pipeline and the water outlet pipeline is arranged in the water inlet valve seat, the water inlet water stop pad is provided with a water inlet plugging surface for plugging the port, the water inlet water stop pad is buckled with the water inlet valve cover, a back pressure cavity is formed between the water inlet water stop pad and the water inlet valve cover, a water inlet hole for communicating the back pressure cavity with the water inlet pipeline is arranged on the water inlet water stop pad, a water outlet hole for communicating the outside with the back pressure cavity is arranged on the water inlet valve cover, the water inlet valve cover is buckled on the water inlet valve seat, the lifting rod is hinged on the water inlet valve cover, a back pressure pad for plugging the water outlet hole is arranged at the pressing end of the lifting rod, and the free end of the lifting rod is positioned below the starting rod of the buoyancy switching mechanism, above the telescopic ejector rod, the starting rod is used for pressing the free end of the lifting rod downwards so that the lifting rod rotates on the water inlet valve cover, the back pressure pad on the pressing end of the lifting rod can remove the blockage of the water outlet hole, the telescopic ejector rod pushes the lifting rod to rotate on the water inlet valve cover in the opposite direction, the back pressure pad on the pressing end of the lifting rod can block the water outlet hole, and the upper part of the telescopic ejector rod is provided with a step surface; one end of a linkage rod of the buoyancy switching mechanism is provided with a hook for clamping the step surface of the telescopic ejector rod; the sluicing back pressure valve also set up on the valve body, including pressure release disk seat, pressure release valve gap, pressure release stagnant water pad, pendulum rod, the pressure release disk seat set up in sewer pipe and outlet pipe handing-over department, be equipped with the crossing pressure release port of sewer pipe and outlet pipe in the pressure release disk seat, pressure release stagnant water pad on be equipped with the pressure release shutoff face that is used for shutoff pressure release port, pressure release stagnant water pad and pressure release valve cap lock are in the same place to form the pressure chamber between pressure release stagnant water pad and pressure release valve gap, be equipped with the pressure release inlet opening with pressure chamber and sewer pipe switch-on the pressure release stagnant water pad, be equipped with the communicating pressure release hole with external and pressure chamber on the pressure release valve gap, pressure release valve gap lock on the pressure release disk seat, the pendulum rod relief valve articulate on covering, the stiff end and the keg float fixed connection of pendulum rod, the end that pushes down of pendulum rod is equipped with and pushes down the pad for shutoff pressure release hole.

Further, the valve body on be equipped with axle chamber, spacing extension board on be equipped with the shaft hole, the upper portion of flexible ejector pin be equipped with the axostylus axostyle, the axostylus axostyle plant in the shaft hole, the upper portion of axostylus axostyle pushes away the free end of carrying the pole, the lower part of flexible ejector pin slide locate the axle intracavity, the lower part of flexible ejector pin and axle chamber bottom between be equipped with compression spring, axle chamber bottom be equipped with the opening, the knot has a fixed lid on the opening, compression spring one end support and lean on fixed lid, the compression spring other end supports and leans on the lower part of flexible ejector pin, through the last flexible removal of the flexible ejector pin of the spring realization that contracts.

Furthermore, a water inlet pipeline of the water outlet waterway is communicated with a water outlet pipeline of the water inlet waterway and is connected to the water pressure starting device through the water outlet pipeline; the other end of the linkage rod is connected with the floating barrel in a sliding mode, and comprises a strip-shaped sliding groove formed in the side wall of the floating barrel, the other end of the linkage rod is provided with a sliding rod, and the sliding rod is arranged in the sliding groove, so that the floating barrel can drive the linkage rod to swing on the valve body conveniently; the swing rod is spanned above the free end of the lifting rod, and a through hole is formed in the swing rod for the starting rod to extend into and press down the free end of the lifting rod.

Further, the water inlet pipeline and the water outlet pipeline are coaxially and transversely arranged on the valve body, the water outlet pipeline is sleeved in the water inlet pipeline in a penetrating mode, the water inlet valve seat is arranged on the side portion of the valve body, the pressure relief valve seat is arranged on the upper portion of the valve body, the water inlet pipeline and the water drain pipeline are coaxially and vertically arranged on the valve body, the water inlet pipeline is sleeved in the water drain pipeline in a penetrating mode, the water outlet pipeline also transversely penetrates through the water drain pipeline, and the water inlet pipeline is communicated with the upper portion of the water outlet pipeline.

The utility model discloses a water pressure starting drive's the hydraulic piston principle of utilizing, through to the water pressure chamber in the injection come from the water source water, the water pressure at water source acts on the piston, because the sectional area of piston be greater than with the sectional area of piston rod, according to the hydraulic pressure principle, will produce great thrust on the piston rod to the drain valve drainage of various structures can be opened.

Drawings

The following describes the present invention in further detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a state diagram of the present invention before draining;

FIG. 4 is a state diagram of the present invention for starting the water discharge;

FIG. 5 is a cross-sectional view of the present invention after starting the drain;

fig. 6 is a schematic view of the water flow in the valve body when the back pressure valve for water inflow and the back pressure valve for water outflow are closed before the water drainage is started;

fig. 7 is a schematic view of the water flow in the valve body when the back pressure valve for water inlet is opened and the back pressure valve for water outlet is closed after the water discharge of the utility model is started;

FIG. 8 is an enlarged partial cross-sectional view taken at A in FIG. 6;

FIG. 9 is an enlarged partial cross-sectional view taken at B in FIG. 7;

FIG. 10 is a schematic view of the water flow of the present invention after the water discharge is started and before the inner core tube is lifted;

FIG. 11 is a schematic view of the water flow after the inner core tube is lifted after the water discharge is started;

FIG. 12 is a view showing the water discharge process of the present invention in a toilet tank;

fig. 13 is a sectional view of the present invention after completion of drainage;

FIG. 14 is a schematic view showing the lifting rod pushed by the telescopic prop and rotated after the water discharge of the present invention is completed;

fig. 15 is a schematic view of the water flow in the valve body when the back pressure valve for water inlet and the back pressure valve for water outlet are closed after the water discharge of the utility model is completed;

FIG. 16 is a schematic view of the water backflow within the piston cylinder after the water discharge of the present invention is completed;

fig. 17 is a schematic view of the water flow in the valve body when the back pressure valve for water inlet is closed and the back pressure valve for water outlet is opened after the water discharge of the utility model is completed;

FIG. 18 is an enlarged partial cross-sectional view taken at C in FIG. 5;

fig. 19 is an enlarged partial cross-sectional view taken at D in fig. 13.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 19, the present invention discloses a water pressure-activated drain valve 10, wherein the drain valve 10 is installed in a toilet tank 3 (as shown in fig. 12), and as shown in fig. 1, 2, 10, 11, and 16, the water pressure-activated drain valve comprises a drain valve body 11, an inner core tube 12, a drain float 13, a base 14, and a water pressure activation device 2; the base 14 is provided with a water inlet 141 and a water outlet 142; the drain valve body 11 comprises a mounting seat 111 and a shell 112, the mounting seat 111 is arranged on the base 14, the shell 112 is arranged on the mounting seat 111, and the shell 111 is a cavity 113 capable of entering and exiting water; the inner core tube 12 is arranged in the cavity 113 and is vertically arranged on the mounting seat 111 in a sliding manner, the lower end of the inner core tube 12 extends out of the bottom of the mounting seat 111 and is fixedly provided with a water sealing sheet 15, the water sealing sheet 15 is positioned above the water outlet 142 of the base 14 and is used for sealing the water outlet 142, the drainage floating barrel 13 is hinged in the cavity 113 of the shell 111 through a swing arm 16, a limiting step 161 is arranged on the swing arm 16, a limiting bulge 121 is arranged on the outer side wall of the inner core tube 12, and the limiting bulge 121 is hooked with or matched with the limiting step 161 in a loosening manner so as to control the up-and-down sliding of the inner core tube 12; the water pressure starting device 2 is arranged in the cavity 113, the water pressure starting device 2 comprises a piston cylinder 21, a piston rod 22 and a piston 23, the piston cylinder 21 is arranged on the mounting seat 111, the lower end of the piston rod 22 is arranged in the piston cylinder 21 and connected with the piston 23, the upper end of the piston rod 22 pushes against the upper end of the inner core tube 12, a return spring 24 is arranged between the piston rod 22 and the upper part of the piston cylinder 21, a liquid seal is formed between the piston 23 and the cylinder wall of the piston cylinder 21, a water pressure cavity 25 is formed between the piston 23 and the lower part of the piston cylinder 21, and a water port 26 is arranged at the bottom of the piston cylinder 21 and communicated with the water pressure cavity 25.

In a further embodiment, as shown in fig. 1, 2, 10, 11, 16, the inner core tube 12 is generally disposed at the center of the drainage valve body 11 in the industry, in order to lift the inner core tube 12 more smoothly, the hydraulic actuating device 2 is disposed at one side of the inner core tube 12 and vertically juxtaposed with the inner core tube 12 in the housing 112, a connecting rod 122 radially extends outward from the upper end of the inner core tube 12, and the upper end of the piston rod 22 pushes against the connecting rod 122.

In a further embodiment, as shown in fig. 1 and fig. 2, a gap 114 is formed on the housing 112 of the drain valve body 11, so that the hydraulic starting device 2 can be conveniently mounted on the mounting seat 111.

In a further embodiment, as shown in fig. 2, 10, 11, and 16, a cover 27 is disposed at an upper end of the piston cylinder 21, a through hole 271 is disposed on the cover 27 for the piston rod 22 to pass through, the return spring 24 is sleeved on the piston rod 22, an upper end of the return spring 24 abuts against the cover 27, and a lower end of the return spring 24 abuts against the piston 23.

In a further embodiment, as shown in fig. 2, fig. 10, fig. 11 and fig. 16, the water gap 26 is disposed on the bottom side wall of the piston cylinder 21, so as to facilitate the water gap 26 to be sleeved with the connecting water pipe 31.

In a further embodiment, as shown in fig. 2 and 11, in order to prevent the water pressure chamber 25 from exceeding the set pressure and damaging the return spring 24, the bottom of the piston cylinder 21 is provided with a pressure relief opening 211, the pressure relief opening is provided with a pressure limiting valve 28, the pressure limiting valve 28 comprises a gasket 281, a pushing part 282 and a pushing spring 283, the gasket 281 is arranged on the pushing part 282, the pushing spring 283 is arranged on the mounting seat 111, the pushing spring 283 abuts against the pushing part 282 so that the gasket 281 blocks the pressure relief opening 211, when the water in the water pressure chamber 25 exceeds the set pressure, the gasket 281 is spread, and the excess water in the water pressure chamber 25 is directly drained from the pressure relief opening 211.

In a further embodiment, the drainage float 13 is arranged on the adjusting rod 17, the adjusting rod 17 is vertically movably arranged in the shell 111, the adjusting rod 17 is hinged with the swing arm 16, and the drainage float 13 is arranged at different high and low positions on the adjusting rod 17 so as to adjust the time when the drainage float 13 loses buoyancy and adjust the drainage quantity of the water tank 3.

The utility model discloses a drain valve 10's water pressure starts drainage principle is: as shown in fig. 2, 10, 11, 12 and 16, when water in the connecting water pipe 31 flows into the water pressure chamber 25 from the bottom water gap 26 of the piston cylinder 25, the pressure of the water pushes the piston 23 and the piston rod 22 to slide upwards, the return spring 24 is pressed, the upper end of the piston rod 22 abuts against the connecting rod 122 at the upper end of the inner core pipe 12, so as to drive the inner core pipe 12 to move upwards in the water discharge valve body 11, the water sealing sheet 15 at the lower end of the inner core pipe 12 leaves the water outlet 142 of the base 14, the water sealing of the water outlet 142 is released, the water discharge valve 10 opens to discharge water, and the water in the water tank 3 flows into the toilet from the water inlet 141 through the water outlet 142 to flush the toilet; when the inner core tube 12 continues to rise and the height of the limiting protrusion 121 on the outer side wall of the inner core tube 12 exceeds the limiting step 161 on the swing arm 16, the limiting protrusion 121 is hooked by the limiting step 161 (as shown in fig. 4 and 5), and the drain valve 10 continuously drains water; when water stops flowing into the connecting water pipe 31, the piston 23 in the piston cylinder 21 loses pressure, the return spring 24 pushes the piston 23 downwards to return, the upper end of the piston rod 22 is loosened and abutted against the connecting rod 122 at the upper end of the inner core pipe 12, and water in the water pressure cavity 25 is discharged outwards through the connecting water pipe 31; when water in the water tank 3 flows to the drainage floating barrel 13 and loses buoyancy, the drainage floating barrel 13 drives the adjusting rod 17 to fall, the adjusting rod 17 drives the swing arm 16 to swing downwards on the shell 111, the limiting step 161 on the swing arm 16 is loosened and hooked on the limiting protrusion 121 on the inner core tube 12, the inner core tube 12 falls, the water sealing sheet 15 at the lower end of the inner core tube 12 seals the water outlet 142 again, and drainage of the drainage valve 10 is closed.

The utility model discloses a water pressure starting drive 2 utilizes is hydraulic piston principle, and through pouring into the water that comes from the water source into water pressure chamber 25, the water pressure at water source acts on piston 23, because the sectional area of piston 23 is greater than the sectional area with piston rod 22, according to hydraulic principle, will produce great thrust on the piston rod 22 to can open drain valve 10 drainage.

In a further embodiment, as shown in fig. 1 to 19, in order to control the water flowing into or out of the hydraulic chamber 25 of the piston cylinder 21, the connection water pipe 31 is connected to a water inlet/outlet switching control valve 40, and the water flowing into or out of the hydraulic chamber 25 is controlled by the water inlet/outlet switching control valve 40.

As shown in fig. 1-9, 12-15, 17-19, a water inlet and outlet switching control valve 40 for switching water inlet and outlet of a hydraulic starting device 2 comprises a valve body 4, a water inlet back pressure valve 5, a water discharge back pressure valve 6 and a buoyancy switching mechanism 7; the valve body 40 is provided with a water inlet waterway 42 and a water outlet waterway 43, a water inlet pipeline 422 of the water inlet waterway 42 is connected to a water source, a water outlet pipeline 423 of the water inlet waterway 42 is connected to the hydraulic starting device 2, the water inlet backpressure valve 5 is connected between the water inlet pipeline 422 and the water outlet pipeline 423, a water inlet pipeline 437 of the water outlet waterway 43 is connected to the hydraulic starting device 2, a water drain pipeline 438 of the water outlet waterway 43 leads to the toilet water tank 3, and the water drain backpressure valve 6 is connected between the water inlet pipeline 437 and the water drain pipeline 438; the buoyancy switching mechanism 7 is arranged on the valve body 4, when the water supply pressure starting device 2 supplies water, the water inlet back pressure valve 5 is opened firstly, meanwhile, the water drainage back pressure valve 6 is kept closed, when the water supply pressure starting device drains water 2, the water inlet back pressure valve 5 is closed, and meanwhile, the water drainage back pressure valve 6 is opened.

In a further embodiment, as shown in fig. 1-2, 4, 6, 10-12, and 14-17, the water outlet pipe 423 of the water inlet waterway 42 is connected to the hydraulic actuating device 2, specifically, the water outlet pipe 423 is connected to the water outlet 26 at the bottom of the piston cylinder 25 through the connecting water pipe 31, and the water inlet pipe 437 of the water outlet waterway 43 is communicated with the water outlet pipe 423 of the water inlet waterway 42, and is indirectly communicated with the water outlet 26 at the bottom of the piston cylinder 25 of the hydraulic actuating device 2 through the water outlet pipe 423. Of course, the water inlet pipe 437 of the water outlet channel 43 may be directly communicated with the water outlet 26 at the bottom of the piston cylinder 25 of the hydraulic starting device 2 or communicated with the hydraulic cavity 25 by another independent pipe.

In a further embodiment, as shown in fig. 1-5 and 13, the buoyancy switching mechanism 7 includes a start lever 79, a telescopic ejector rod 74, a linkage lever 75 and a float bowl 76, the start lever 79 is disposed above the valve body 4 and is used for pressing down to open the back pressure valve 5 for water intake, the telescopic ejector rod 74 is slidably disposed on the valve body 4 and is used for closing the back pressure valve 5 for water intake, the linkage lever 76 is hinged to the valve body 4, one end of the linkage lever 76 is used for blocking the telescopic ejector rod 74 to slide on the valve body 4, the other end of the linkage lever 76 is slidably connected with the float bowl 76, the float bowl 76 is hinged to the valve body 4, the float bowl 76 swings downwards to open the back pressure valve 5 for water drainage when buoyancy is lost, at the same time, the linkage lever 75 is driven to rotate to withdraw from blocking the telescopic ejector rod 74, and the float bowl 76 swings upwards under the action of buoyancy to close the back pressure valve 6 for water drainage.

In further embodiment, the back pressure valve 5 for water inlet and the back pressure valve 6 for water outlet utilize the back pressure principle of the water inlet valve in the industry, and the back pressure principle and the structure are the prior art in the field.

As shown in fig. 1-2, 6-9, 15, and 17, the water inlet back pressure valve 5 is disposed on the valve body 4, and includes a water inlet valve seat 50, a water inlet valve cover 51, a water inlet water stop pad 52, and a lifting rod 53, wherein the water inlet valve seat 50 is disposed at a junction of a water inlet pipe 422 and a water outlet pipe 423 on the valve body 4, a port 44 where the water inlet pipe 422 intersects the water outlet pipe 423 is disposed in the water inlet valve seat 50, the water inlet water stop pad 52 is provided with a water inlet blocking surface 521 for blocking the port 44, the water inlet water stop pad 52 is fastened with the water inlet valve cover 51, a back pressure chamber 58 is formed between the water inlet water stop pad 52 and the water inlet valve cover 51, a water inlet hole 522 is disposed on the water inlet water stop pad 52 to communicate the back pressure chamber 58 with the water inlet pipe 422, a water outlet 511 is disposed on the water inlet valve cover 51 to communicate the back pressure chamber 58, the water inlet valve cover 51 is fastened with the water inlet valve seat 50, and the lifting rod 53 is hinged to the water inlet valve cover 51, the pressing end 531 of the lifting rod 53 is provided with a back pressure pad 533 for blocking the water outlet hole 511, the free end 532 of the lifting rod 53 is positioned below the actuating rod 79 of the buoyancy switching mechanism 7 and above the telescopic ejector rod 74, the actuating rod 74 is used for pressing down the free end 532 of the lifting rod 53 to enable the lifting rod 53 to rotate on the water inlet valve cover 50, the back pressure pad 533 on the pressing end 531 of the lifting rod 53 can release the blocking of the water outlet hole 511, the telescopic ejector rod 74 pushes the lifting rod 53 to rotate on the water inlet valve cover 50 in the opposite direction, the back pressure pad 533 on the pressing end 531 of the lifting rod 53 can block the water outlet hole 511, and the upper part of the telescopic ejector rod 74 is provided with a step surface 741; one end of the linkage 75 of the buoyancy switching mechanism 7 is provided with a hook 551 for clamping the step surface 741 of the telescopic ejector rod 74.

As shown in fig. 1-9, 12-15, 17-19, the back pressure relief valve 6 is also disposed on the valve body 6, and comprises a pressure relief valve seat 60, a pressure relief valve cover 61, a pressure relief water stop pad 62, and a swing rod 67, the pressure relief valve seat 60 is disposed at the junction of the water inlet pipe 437 and the water drain pipe 438, the pressure relief valve seat 60 is provided with a pressure relief port 49 intersecting the water inlet pipe 437 and the water drain pipe 438, the pressure relief water stop pad 62 is provided with a pressure relief blocking surface 621 for blocking the pressure relief port 49, the pressure relief water stop pad 62 is fastened with the pressure relief valve cover 61, a pressure chamber 68 is formed between the pressure relief water stop pad 62 and the pressure relief valve cover 61, the pressure relief water stop pad 62 is provided with a pressure relief water inlet hole 611 for connecting the pressure chamber 68 and the water inlet pipe 437, the pressure relief valve cover 61 is provided with a pressure relief hole 611 for communicating the outside with the pressure chamber 68, the pressure relief valve cover 61 is fastened on the pressure relief valve seat 60, the swing rod 67 is hinged on the pressure relief valve cover 61, the fixed end 671 of the swing rod 67 is fixedly connected with the floating bucket 76, and the downward pressing end 672 of the swing rod 67 is provided with a downward pressing pad 674 for plugging the pressure relief hole 611.

In a further embodiment, as shown in fig. 2-5 and 13, the valve body 4 is provided with an axial cavity 451 and a limiting support plate 452, the limiting support plate 452 is provided with an axial hole 453, the upper portion of the telescopic push rod 74 is provided with a shaft rod 742, the shaft rod 742 is inserted into the axial hole 453, the lower portion of the telescopic push rod 74 is slidably disposed in the axial cavity 451, a compression spring 743 is disposed between the lower portion of the telescopic push rod 74 and the bottom of the axial cavity 451, and the limiting support plate 452 blocks a step surface 741 of the telescopic push rod 74 to prevent the upper telescopic push rod 74 from slipping out of the axial cavity 451.

In a further embodiment, as shown in fig. 2-5 and 13, an opening 454 is formed at the bottom of the shaft cavity 451, a fixed cover 455 is fastened on the opening 454, one end of the compression spring 743 abuts against the fixed cover 455, the other end of the compression spring 743 abuts against the lower part of the telescopic ejector rod 74, and the upper telescopic movement of the telescopic ejector rod 74 is realized through the compression spring 743.

In a further embodiment, as shown in fig. 2-5, the sliding connection between the other end of the linkage 75 and the float bucket 76 includes a bar-shaped sliding slot 761 formed in the side wall of the float bucket 76, and a sliding rod 752 formed at the other end of the linkage 75, where the sliding rod 752 is disposed in the sliding slot 761, so that the float bucket 76 drives the linkage 75 to swing on the valve body 4.

In a further embodiment, as shown in fig. 6, 7, 15 and 17, the water inlet pipe 422 and the water outlet pipe 423 are coaxially and transversely arranged on the valve body 4, the water outlet pipe 423 is sleeved in the water inlet pipe 422 in a penetrating manner, the water inlet valve seat 50 is arranged on the side portion of the valve body 4, the pressure relief valve seat 60 is arranged on the upper portion of the valve body 4, the water inlet pipe 437 and the water drain pipe 438 are coaxially and vertically arranged on the valve body 4, the water inlet pipe 437 is sleeved in the water drain pipe 438 in a penetrating manner, the water outlet pipe 423 also transversely penetrates through the water drain pipe 438, and the water inlet pipe 437 is communicated above the water outlet pipe 438.

In a further embodiment, as shown in fig. 6, 7, 15 and 17, a fixing seat 481 is clamped at the lower part of the drainage pipeline 438, and a drainage pipeline hole 482 is arranged on the fixing seat 481.

In a further embodiment, as shown in fig. 2, a core hole 523 is disposed in the center of the water inlet and stop pad 52, and a water stop core 524 is disposed inside the core hole 523.

In a further embodiment, as shown in fig. 1, 2, 3, 4 and 5, the swing link 67 straddles the free end 532 of the lifting rod 53, and the swing link 67 has a through hole 675 formed therein to facilitate the extension of the actuating lever 79 into the free end 532 of the lifting rod 53.

In a further embodiment, as shown in fig. 2, 6, 7, 15 and 17, a pressure relief positioning piece 461 is further disposed in the pressure relief valve seat 60, the pressure relief positioning piece 461 covers the intersection of the water inlet pipe 437 and the water drain pipe 438, and the pressure relief port 49 is exposed from the central hole 462 of the pressure relief positioning piece 461.

The utility model discloses a switching principle is switched to business turn over water switching control valve 40's rivers: the water inlet pipe 422 of the water inlet waterway 42 is connected with the water supply pipe 32, water from a water source enters the water inlet pipe 422 through the water supply pipe 32, a back pressure is formed in the back pressure cavity 58 of the water inlet back pressure valve 5 by using the water pressure of the water source, and the water inlet waterway 42 is cut off when the water inlet back pressure valve 5 is in a closed state; when water enters the water pressure starting device 2 of the water supply and drainage valve 10, the buoyancy switching mechanism 7 firstly opens the water inlet back pressure valve 5 to conduct the water inlet water channel 42, meanwhile, the water pressure of a water source forms back pressure in the pressure cavity 68 of the water drainage back pressure valve 6, the water drainage back pressure valve 6 is kept closed, the water outlet water channel 43 is cut off, and water inlet of the water pressure starting device 2 of the water supply and drainage valve 10 is realized; when the water pressure starting device 2 of the water supply and drainage valve 10 is drained, the water pressure of a water source is utilized to form back pressure in the back pressure cavity 58 of the water inlet back pressure valve 5, so that the water inlet back pressure valve 5 is closed again, the water inlet water channel 42 is cut off again, meanwhile, the back pressure in the pressure cavity 68 of the water drainage back pressure valve 6 is relieved, the water drainage back pressure valve 6 is opened, the water outlet water channel 43 is conducted, and the water drainage of the water pressure starting device 2 of the water supply and drainage valve 10 is realized, and the specific water flow switching principle is as follows:

as shown in fig. 1, 3, 6, 8, and 12, before the water inlet/outlet switching control valve 40 is activated, the shaft 742 at the upper end of the telescopic rod 74 abuts against the free end 532 of the lifting rod 53, the back pressure pad 533 at the pressing end 531 of the lifting rod 53 blocks the water outlet 511, water from the water supply pipe 32 flows into the water inlet pipe 422, water enters the back pressure chamber 58 from the water inlet hole 522 of the water inlet stop pad 52, water pressure is reacted to the water inlet stop pad 52, the water inlet blocking surface 521 on the water inlet stop pad 52 blocks the port 44, and blocks water in the water inlet pipe 422 from entering the water outlet pipe 423 through the port 44 (as shown in fig. 6), at this time, water in the water tank 3 is not discharged through the drain valve 10, and the float 76 floats upwards under the buoyancy force to drive the lower pressure pad on the lower pressure end 672 of the swing rod 67 to block the pressure release hole 674 (as shown in fig. 5 and 18); as shown in fig. 4, 5, 7 and 9, when the actuating rod 79 of the buoyancy switching mechanism 7 is pressed, the actuating rod 79 presses the free end 532 of the lifting rod 53, the lifting rod 53 rotates on the water inlet valve cover 51, the free end 532 of the lifting rod 53 pushes the telescopic ejector rod 74 to slide downwards in the shaft cavity 451, the compression spring 743 is compressed until the step surface 741 on the telescopic ejector rod 74 is hooked by the hook 751 on the coupling rod 75 (as shown in fig. 5 and 12), the back pressure pad 533 on the pressing end 531 of the lifting rod 53 releases the blockage of the water outlet 511, the water in the back pressure cavity 58 loses pressure, the water inlet blocking surface 521 on the water inlet water stop pad 52 releases the blockage of the port 44, the water in the water inlet pipe 422 enters the water outlet pipe 423 through the port 44, a part of the water in the water outlet pipe 423 flows into the water outlet 437, the water in the water inlet pipe enters the pressure cavity 68 through the water inlet hole 622 on the water relief water stop pad 62, and a back pressure is formed in the pressure chamber 68, the pressure-releasing blocking surface 621 on the pressure-releasing water-stopping pad 62 blocks the pressure-releasing port 49, and blocks the water in the water inlet pipe 437 from entering the water outlet pipe 438 (as shown in fig. 5 and 7), so that the water in the water outlet pipe 423 only enters the connected water pipe 31, and the connected water pipe 31 is communicated with the water port 26 at the bottom of the water pressure starting device 2, so that the water enters the water pressure starting device 2 of the water discharge valve 10 through the water outlet pipe 423 for starting the water discharge of the water discharge valve 10, which is described in detail in the content of the water discharge principle of the water discharge valve 10.

As shown in fig. 1, 3, 6, 8 and 12, when the water in the water tank 3 is discharged to the float bucket 76 and loses buoyancy, the float bucket 76 drives the swing rod 67 to rotate on the pressure relief valve cover 61, the float bucket 76 drives the linkage 75 to swing on the valve body 4, the sliding rod 752 of the linkage 75 slides downwards in the sliding slot 761, the hook 751 on the linkage 75 releases the hook on the step surface 741 on the telescopic rod 74, the telescopic rod 74 slides upwards in the shaft cavity 451 under the reaction of the compression spring 743, the shaft rod 742 on the upper part of the telescopic rod 74 props against the free end 532 of the lifting rod 53 again, the back pressure pad 533 on the pressing end 531 of the lifting rod 53 blocks the water outlet 511 again (as shown in fig. 14), the water flowing into the water inlet pipe 422 from the water supply pipe 32 forms back pressure again in the back pressure cavity 58, the water pressure reacts again on the water inlet water stop pad 52, the blocking surface 521 on the water inlet water stop pad 52 blocks the water inlet port 44 again, blocking water in the inlet conduit 422 from entering the outlet conduit 423 through port 44 (shown in fig. 15); meanwhile, the float bucket 76 also drives the swing rod 67 to rotate on the pressure relief valve cover 61, the lower pressure pad 674 on the lower pressure end 672 of the swing rod 67 removes the blockage of the pressure relief hole 611, water in the pressure cavity 68 flows out of the pressure relief hole 611, the back pressure in the pressure cavity 68 disappears, the pressure relief blocking surface 621 on the pressure relief water stop pad 62 removes the blockage of the pressure relief port 49 ((as shown in fig. 13 and 19), water in the water pressure cavity 25 of the water pressure starting device 2 is squeezed outwards, flows back into the connecting water pipe 31 ((as shown in fig. 16 and 17), flows into the water inlet pipe 437 through the water outlet pipe 423, flows into the water drainage pipe 438 through the pressure relief port 49, and finally flows into the toilet water tank through the water drainage pipe hole 482, so that the water switching in the water pressure cavity 25 of the water pressure starting device 2 is completed.

It should be noted that, the utility model discloses a buoyancy switching mechanism 7 of business turn over water switching control valve 40 cooperates with the backpressure valve 5 of intaking and constitutes the controlling means of intaking to water pressure starting drive 2, utilize actuating rod 79 of buoyancy switching mechanism 7 to push down the pole-lifting 53 of backpressure valve 5 of intaking, flexible ejector pin 74 supports to support and lean on pole-lifting 53, and limit flexible ejector pin 74 through trace 75 and support and lean on pole-lifting 53, reuse buoyancy 76 to remove flexible ejector pin 74 when losing buoyancy and support and lean on pole-lifting 53, realize carrying out the on-off control to apopore 511 on the valve cover 51 of intaking, reach the control that the backpressure in the backpressure chamber 58 produced and disappeared, thereby control the intake to water pressure starting drive 2 through water inlet 42; the utility model discloses a business turn over water switches over the buoyancy switching mechanism 7 of control valve 40 constitutes the play water controlling means to water pressure starting drive 2 with the cooperation of sluicing back pressure valve 6, utilizes the flotation tank 76 of buoyancy switching mechanism 7 and the fixed connection of the pendulum rod 67 of sluicing back pressure valve 6, utilizes the buoyancy of flotation tank 76 to realize the on-off control to the pressure release hole 611 on pressure release valve gap 61 to control water pressure starting drive 2 is through the drainage of play water route 43. It can be seen that the structural component used by both the water inlet control device and the water outlet control device of the water pressure starting device 2 is only the floating barrel 76 of the buoyancy switching mechanism 7, and then the water inlet control device and the water outlet control device can be designed relatively independently, for example, the floating barrel 76 of the buoyancy switching mechanism 7 is not necessarily hinged on the pressure relief valve cover 61 through the swing rod 67, but can also be hinged on the valve body 4 directly, the swing rod 6 of the back pressure drain valve 6 is connected with another floating barrel alone, the water outlet pipeline 423 of the water inlet waterway 42 is not communicated with the water inlet pipeline 437 of the water outlet waterway 43, but is independent, that is, the water outlet pipeline 423 is communicated with the water pressure cavity 25 of the water pressure starting device 2 alone, the water inlet pipeline 437 is communicated with the water pressure cavity 25 of the water pressure starting device 2 alone, and the water inlet and outlet of the water pressure starting device 2 can also be switched.

In addition, the water inlet and outlet switching control valve 40 of the present invention is not only suitable for the water pressure starting device 2 made by using the piston principle in the above embodiment, but also suitable for the water pressure starting device of the prior art in which the liquid bag expands to lift the inner core tube, such as the liquid bag, which is arranged on the drainage valve body, and the liquid bag is filled with water and drained to enable the liquid bag to expand or contract; the liquid bag expands to drive the inner core pipe of the drain valve to rise through the lever member so as to open the drain outlet, and the drain valve drains water.

Furthermore, the utility model discloses a water pressure starting drive 2 not only can open the drain valve drainage that has the inner core pipe in above-mentioned embodiment, can also open the drain valve drainage that has the bat lid formula structure among the prior art, if cover the piston rod with the bat of drain valve and be connected, will clap the water-sealing piece that covers and push away from the outlet of drain valve to start the drain valve drainage.

Therefore, the above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made according to the design key of the present invention fall within the protection scope of the present invention.

Claims (10)

1. A hydraulic pressure starting drive of drain valve which characterized in that: the water draining valve comprises a piston cylinder, a piston rod and a piston, wherein the piston cylinder is arranged on a water draining valve body of the water draining valve, the lower end of the piston rod is arranged in the piston cylinder and is connected with the piston, the upper end of the piston rod pushes a water sealing sheet of the water draining valve to separate from a water opening, a return spring is arranged between the piston rod and the upper part of the piston cylinder, a liquid seal is formed between the piston and the cylinder wall of the piston cylinder, a water pressure cavity is formed between the piston and the lower part of the piston cylinder, and the bottom of the piston cylinder is provided with a water opening communicated with the water pressure cavity.

2. The hydraulic actuating apparatus of a discharge valve in accordance with claim 1, wherein: the upper end of the piston cylinder is provided with a cylinder cover, the cylinder cover is provided with a through hole for the piston rod to penetrate out, the reset spring is sleeved on the piston rod, the upper end of the reset spring is abutted against the cylinder cover, and the lower end of the reset spring is abutted against the piston.

3. The hydraulic actuating apparatus of a discharge valve in accordance with claim 1, wherein: the water gap is arranged on the side wall of the bottom of the piston cylinder.

4. The hydraulic actuating apparatus of a discharge valve in accordance with claim 1, wherein: the bottom of the piston cylinder is provided with a pressure relief opening, the pressure relief opening is provided with a pressure limiting valve, the pressure limiting valve comprises a gasket, a pushing and supporting piece and a pushing and supporting spring, the gasket is arranged on the pushing and supporting piece, the pushing and supporting spring is arranged on a mounting seat of a drainage valve body of the drainage valve, and the pushing and supporting spring abuts against the pushing and supporting piece to enable the gasket to seal the pressure relief opening.

5. The hydraulic actuating apparatus of a discharge valve in accordance with claim 1, wherein: the water inlet is connected with a water inlet and outlet switching control valve through a connecting water pipe, the water flowing into or flowing out of the water pressure cavity is switched and controlled through the water inlet and outlet switching control valve, and the water inlet and outlet switching control valve comprises a valve body, a water inlet back pressure valve, a water drainage back pressure valve and a buoyancy switching mechanism; the valve body is provided with a water inlet waterway and a water outlet waterway, a water inlet pipeline of the water inlet waterway is connected to a water source, a water outlet pipeline of the water inlet waterway is connected to the water pressure starting device and supplies water to the water pressure starting device, the water inlet backpressure valve is connected between the water inlet pipeline and the water outlet pipeline, a water inlet pipeline of the water outlet waterway is connected to the water pressure starting device, a water drain pipeline of the water outlet waterway is communicated into the toilet water tank and supplies drain water to the water pressure starting device, and the water drain backpressure valve is connected between the water inlet pipeline and the water drain pipeline; the buoyancy switching mechanism is arranged on the valve body, the water inlet back pressure valve is opened in advance when the water supply pressure starting device feeds water, the water drainage back pressure valve is kept closed at the same time, and the water inlet back pressure valve is closed and the water drainage back pressure valve is opened at the same time when the water supply pressure starting device drains water.

6. The water pressure actuating apparatus of a water discharge valve according to claim 5, wherein: the buoyancy switching mechanism include actuating lever, flexible ejector pin, trace, keg float, the actuating lever locate the valve body top and be used for opening the back pressure valve of intaking, flexible ejector pin slide locate on the valve body and be used for closing the back pressure valve of intaking, the trace articulate on the valve body, the one end of trace is used for blocking the slip of flexible ejector pin on the valve body, the other end and the keg float sliding connection of trace, the keg float articulates on the valve body, the keg float is losing buoyancy and swings downwards and opens the back pressure valve of sluicing, drives the trace simultaneously and rotates and withdraw from the card system to flexible ejector pin, the keg float is used for closing the back pressure valve of sluicing under buoyancy.

7. The water pressure actuating apparatus of a water discharge valve according to claim 6, wherein: the water inlet back pressure valve is arranged on the valve body and comprises a water inlet valve seat, a water inlet valve cover, a water inlet water stop pad and a lifting rod, wherein the water inlet valve seat is positioned at the joint of a water inlet pipeline and a water outlet pipeline, a port which is intersected with the water inlet pipeline and the water outlet pipeline is arranged in the water inlet valve seat, the water inlet water stop pad is provided with a water inlet plugging surface for plugging the port, the water inlet water stop pad is buckled with the water inlet valve cover together, a back pressure cavity is formed between the water inlet water stop pad and the water inlet valve cover, a water inlet hole for communicating the back pressure cavity with the water inlet pipeline is arranged on the water inlet water stop pad, a water outlet hole for communicating the outside with the back pressure cavity is arranged on the water inlet valve cover, the water inlet valve cover is buckled on the water inlet valve seat, the lifting rod is hinged on the water inlet valve cover, a back pressure pad for plugging the water outlet hole is arranged at the pressing end of the lifting rod, the free end of the lifting rod is positioned below the starting rod of the buoyancy switching mechanism, and above the telescopic push rod, the starting rod is used for pressing the free end of the lifting rod downwards so that the lifting rod rotates on the water inlet valve cover, the back pressure pad on the pressing end of the lifting rod can remove the blockage of the water outlet hole, the telescopic ejector rod pushes the lifting rod to rotate on the water inlet valve cover in the opposite direction, the back pressure pad on the pressing end of the lifting rod can block the water outlet hole, and the upper part of the telescopic ejector rod is provided with a step surface; one end of a linkage rod of the buoyancy switching mechanism is provided with a hook for clamping the step surface of the telescopic ejector rod; the sluicing back pressure valve also set up on the valve body, including pressure release disk seat, pressure release valve gap, pressure release stagnant water pad, pendulum rod, the pressure release disk seat set up in sewer pipe and outlet pipe handing-over department, be equipped with the crossing pressure release port of sewer pipe and outlet pipe in the pressure release disk seat, pressure release stagnant water pad on be equipped with the pressure release shutoff face that is used for shutoff pressure release port, pressure release stagnant water pad and pressure release valve cap lock are in the same place to form the pressure chamber between pressure release stagnant water pad and pressure release valve gap, be equipped with the pressure release inlet opening with pressure chamber and sewer pipe switch-on the pressure release stagnant water pad, be equipped with the communicating pressure release hole with external and pressure chamber on the pressure release valve gap, pressure release valve gap lock on the pressure release disk seat, the pendulum rod relief valve articulate on covering, the stiff end and the keg float fixed connection of pendulum rod, the end that pushes down of pendulum rod is equipped with and pushes down the pad for shutoff pressure release hole.

8. The water pressure actuating apparatus of a water discharge valve according to claim 7, wherein: the valve body on be equipped with axle chamber, spacing extension board on be equipped with the shaft hole, the upper portion of flexible ejector pin be equipped with the axostylus axostyle, the axostylus axostyle plant in the shaft hole, the upper portion of axostylus axostyle pushes away the free end of carrying the pole, the lower part of flexible ejector pin slide locate the axle intracavity, the lower part of flexible ejector pin and axle chamber bottom between be equipped with compression spring, axle chamber bottom be equipped with the opening, the knot has a fixed lid on the opening, compression spring one end support and lean on fixed lid, the compression spring other end supports and leans on the lower part of flexible ejector pin, through the last flexible removal of the flexible ejector pin of the spring realization that contracts.

9. The water pressure actuating apparatus of a water discharge valve according to claim 7, wherein: the water inlet pipeline of the water outlet waterway is communicated with the water outlet pipeline of the water inlet waterway and is connected to the water pressure starting device through the water outlet pipeline; the other end of the linkage rod is connected with the floating barrel in a sliding mode, and comprises a strip-shaped sliding groove formed in the side wall of the floating barrel, the other end of the linkage rod is provided with a sliding rod, and the sliding rod is arranged in the sliding groove, so that the floating barrel can drive the linkage rod to swing on the valve body conveniently; the swing rod is spanned above the free end of the lifting rod, and a through hole is formed in the swing rod for the starting rod to extend into and press down the free end of the lifting rod.

10. The water pressure actuating apparatus of a water discharge valve according to claim 7, wherein: the water inlet pipeline and the water outlet pipeline are coaxially and transversely arranged on the valve body, the water outlet pipeline is sleeved in the water inlet pipeline, the water inlet valve seat is arranged on the side portion of the valve body, the pressure relief valve seat is arranged on the upper portion of the valve body, the water inlet pipeline and the water drain pipeline are coaxially and vertically arranged on the valve body, the water inlet pipeline is sleeved in the water drain pipeline, the water outlet pipeline also transversely penetrates through the water drain pipeline, and the water inlet pipeline is communicated above the water outlet pipeline.

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