A kind of air release valve and toilet tank drain valve opened by air pressure
Through the mechanical structure, the airbag inflation and deflation using the movement of the inner core tube and the elastic parts, it solves the problem of manual pressing of the traditional toilet tank drain valve and high power consumption of the electromagnetic pressure relief valve, and realizes air pressure opening reliability and economicality.
Patent Information
- Application Number
- CN202010309902.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-04-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2040-04-20
AI Technical Summary
The traditional toilet tank drain valve needs to be opened manually by pressing the button, and there is a mechanical lever transmission structure. The solenoid pressure relief valve is costly and consumes electricity. After damage, the drain valve cannot be used normally.
The exhaust valve adopts a mechanical structure, which uses the rise and fall movement of the inner core tube to push the slide up and down, and combines the compressed elastic parts to insert or exit the limit bump of the exhaust valve, realizing the inflation and deflation of the airbag, eliminating the loss of Solenoid pressure relief valve.
The air-pressure opening toilet tank drain valve is achieved with reliable performance, low cost and no power consumption, simplifying the opening method and suitable for widespread use.
Smart Images
Figure CN111395468B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a toilet water tank drain valve opened by air pressure, in particular to a toilet water tank drain valve opened by air pressure and an air release valve thereof. Background Art
[0002] The traditional toilet tank drain valve pushes the rocker arm by pressing a button, which lifts the inner core tube of the drain valve and engages with the hook of the half-row limit device or the full-row limit device. The water sealing piece at the lower end of the inner core tube leaves the water outlet of the valve body, and the half-row or full-row drainage function of the drain valve is opened. When the water level in the water tank drops and the half-row float bucket of the half-row limit device or the full-row float bucket of the full-row limit device loses buoyancy, the inner core tube loses the support of the hook of the half-row limit device or the full-row limit device, the engaging relationship between the inner core tube and the hook is released and the tube falls, and the water sealing piece at the lower end of the inner core tube is re-sealed with the water outlet of the valve body, and the drainage is closed.
[0003] As can be seen from the above, the button, rocker arm and inner core tube of the traditional toilet tank drain valve are a mechanical lever transmission structure, which requires people to manually press the button to achieve the lifting of the inner core tube. However, the country now advocates people to pursue a high-quality and beautiful life. People hope to open the toilet tank drain valve through electronic sensing without pressing the drain valve button installed on the toilet tank. This is labor-saving and convenient, and avoids cross-infection caused by different people pressing the drain valve button.
[0004] At present, there are toilet tank drain valves on the market that are opened by air pressure. They are electrically connected to the air pump through an electronic sensing switch and a controller. The air pump is connected to a telescopic air bag through an air pipe, and an electromagnetic pressure relief valve is connected to the air pipe. When drainage is required, people wave their hands above the electronic sensing switch, and the electronic sensing switch sends a sensing signal to the controller. The controller turns on the air pump, and the air pump inflates the telescopic air bag. The telescopic air bag expands and pushes the lifting cover on the inner core tube of the drain valve, thereby driving the inner core tube to rise. When the inner core tube rises to the point where it is engaged with the hook of the half-drain limit device or the full-drain limit device of the drain valve, the electromagnetic pressure relief valve opens. When the inner core tube falls, the water sealing piece at the lower end of the inner core tube leaves the water outlet of the valve body, and the half-row or full-row drainage function of the drain valve is turned on. When the water level in the water tank drops and the half-row float bucket of the half-row limit device or the full-row float bucket of the full-row limit device loses buoyancy, the inner core tube loses the support of the hook of the half-row limit device or the full-row limit device, and the card-matching relationship between the inner core tube and the hook is released and the tube falls. Before the inner core tube falls, the water sealing piece at the lower end of the inner core tube and the water outlet of the valve body are re-sealed, and the drainage is closed.
[0005] As can be seen from the above, the telescopic airbag needs to be depressurized by an electromagnetic pressure relief valve. Once the electromagnetic pressure relief valve is damaged and fails, the telescopic airbag can neither be inflated nor deflated, causing the drain valve to be unable to be used normally. Moreover, the electromagnetic pressure relief valve is costly and has the disadvantage of being power-consuming. The inventor has developed a depressurization valve that uses a mechanical structure to achieve telescopic airbag depressurization. Summary of the invention
[0006] The invention provides an air release valve for opening a toilet tank drain valve by air pressure. The air release valve has reliable performance, low cost and no need for electricity consumption.
[0007] The present invention also provides a pneumatically opened toilet tank drain valve, which has a simple opening method, reliable performance and low cost.
[0008] The technical solution adopted to achieve the above purpose is:
[0009] A gas relief valve comprises a valve seat, a sliding block and a pushing block. The valve seat is arranged on the upper part of a drain valve body through a mounting seat. A gas relief channel is arranged at the bottom of the valve seat. One end of the gas relief channel is an air inlet end, and the other end of the gas relief channel forms a gas relief nozzle. The sliding block is located above the gas relief nozzle and is slidably arranged on the valve seat. A sealing gasket for sealing the gas relief nozzle is arranged at the bottom of the sliding block. A compressed elastic member is arranged between the side of the sliding block away from the inner core tube of the drain valve and the valve seat. A limiting protrusion is arranged on the side of the sliding block close to the inner core tube of the drain valve. The valve seat is provided with a limiting stop for clamping the limiting protrusion. An upper and a lower stop are also arranged on the side of the sliding block close to the inner core tube of the drain valve. The lower part of the upper stop is an inclined surface. The pushing block is located between the upper and the lower stops and is arranged at the upper part of the inner core tube of the drain valve.
[0010] A cylindrical cavity is formed on the valve seat, and an air relief channel is arranged at the bottom of the cylindrical cavity. The air inlet end leads to the outside of the bottom of the cylindrical cavity, and the air relief nozzle leads to the cylindrical cavity. The sliding block includes a column rod and a pressure rod. The column rod and the upper part of the pressure rod are formed as one piece. The column rod is slidably arranged in the cylindrical cavity, and a sealing gasket is arranged at the bottom of the column rod. The compressed elastic member is arranged at the upper part of the column rod, and is located between the side of the inner core tube away from the drain valve and the cylindrical cavity. The limiting protrusion is arranged on the side of the column rod close to the inner core tube of the drain valve. The limiting stop is a limiting hole, and the limiting hole is correspondingly arranged on the side wall of the cylindrical cavity. The pressure rod is arranged outside the cylindrical cavity, close to the side of the inner core tube of the drain valve, and the upper and lower stops are respectively arranged at the upper and bottom of the pressure rod.
[0011] The elastic member is a spring, the upper part of the column rod is provided with a transverse blind hole, the spring is placed in the transverse blind hole, one end of the spring extends out of the transverse blind hole and abuts against the side wall of the columnar cavity of the valve seat.
[0012] A pneumatically-activated toilet tank drain valve comprises a drain valve body, an inner core tube, a limiting device, a telescopic airbag, an air pump, an air relief valve, a controller, and an electronic induction switch. The air pump and the electronic induction switch are electrically connected to the controller. The limiting device comprises a half-row limiting device and a full-row limiting device. The half-row limiting device and the full-row limiting device are arranged in the drain valve body. The inner core tube passes through the drain valve body. The middle part of the inner core tube is respectively engaged with the half-row limiting device and the full-row limiting device. A water sealing sheet is arranged at the bottom of the inner core tube for blocking the water outlet at the bottom of the drain valve body. The upper part of the inner core tube extends out of the drain valve body and is provided with a lifting cover. The lifting cover comprises a half-row lifting cover and a full-row lifting cover. The half-row lifting cover and the full-row lifting cover are respectively symmetrically arranged on the left and right sides of the upper end of the inner core tube. The left and right telescopic airbags are respectively located at the half-row lifting cover and the full-row lifting cover. The lower part of the cover is fixed on the drain valve body, the telescopic air bag for the left half row is connected to the half exhaust pipe of the air pump through the air pipe, and the telescopic air bag for the right full row is connected to the full exhaust pipe of the air pump. The valve seats of the left and right relief valves are arranged on the mounting seat at the same time, spaced from each other and mirrored with the inner core tube as the axis. The upper and lower stops of the left and right relief valves are opposite to each other, and the push block of the relief valve is divided into a left push part and a right push part on the inner core tube of the drain valve. The left push part is higher than the right push part, the left push part is located between the upper and lower stops of the relief valve on the left side, and the right push part is located between the upper and lower stops of the relief valve on the right side, the air inlet end of the relief valve for the left half row is connected with the air pipe of the telescopic air bag for the left half row and the half exhaust pipe of the air pump, and the air inlet end of the relief valve for the right full row is connected with the air pipe of the telescopic air bag for the right full row and the full exhaust pipe of the air pump.
[0013] The half-row limiting device in the drain valve body is higher than the full-row limiting device. The half-row limiting device includes a half-row floating barrel, a half-row rotating frame, and a half-row hook. The half-row rotating frame is rotatably fixed in the drain valve body, a half-row floating barrel is rotatably set on one side of the half-row rotating frame, and a half-row hook is set on the other side of the half-row rotating frame. The full-row limiting device includes a full-row floating barrel, a full-row rotating frame, and a full-row hook. The full-row rotating frame is rotatably fixed in the drain valve body, a full-row floating barrel is rotatably set on one side of the full-row rotating frame, and a full-row hook is set on the other side of the full-row rotating frame. The inner core tubes pass through the center holes of the half-row rotating frame and the full-row rotating frame respectively, the half-row hooks are matched with the half-row card points in the middle of the inner core tube, and the full-row hooks are matched with the full-row card points in the middle of the inner core tube.
[0014] The telescopic airbag is arranged in the cylinder, the cylinder is located below the lifting cover of the inner core tube and is placed on the drain valve body, a piston push rod is slidably arranged in the cylinder, the lower end of the piston push rod is connected to the telescopic airbag, and the upper end of the piston push rod extends out of the cylinder to push the lifting cover of the inner core tube.
[0015] The working principle of the air relief valve of the present invention is: when the drain valve is closed for drainage, the inner core tube falls and drives the water sealing plate to seal the water outlet of the drain valve, the push block presses down the lower stopper, the elastic member pushes the limiting protrusion of the sliding block to insert into the limiting stopper on the valve seat, and the sealing gasket at the bottom of the sliding block blocks the air relief nozzle, thereby sealing the air relief nozzle; when the drain valve is opened for drainage, the inner core tube rises, the water sealing plate leaves the water outlet of the drain valve, and when the inner core tube rises to fit with the limiting device of the drain valve, the push block pushes the lower inclined surface of the upper stopper, the elastic member is compressed, the sliding block is laterally offset on the valve seat, the limiting protrusion of the sliding block exits the limiting stopper on the valve seat, and the sealing gasket at the bottom of the sliding block leaves the air relief nozzle, thereby opening the air relief nozzle for drainage.
[0016] The working principle of the air pressure-opened toilet tank drain valve of the present invention is: when the drain valve needs to be opened for drainage, people wave their hands above the electronic induction switch, the electronic induction switch sends the induction signal to the controller, the controller turns on the air pump, the air pump inflates the telescopic airbag, the telescopic airbag expands and pushes the lifting cover arranged on the inner core tube of the drain valve, thereby driving the inner core tube to rise, the water sealing plate leaves the water outlet of the drain valve, and the half-drain or full-drain drainage function of the drain valve is opened, when the inner core tube rises to the point where it is engaged with the hook of the half-drain limit device or the full-drain limit device, the push block pushes against the lower inclined surface of the upper stop, the elastic member is compressed, and the sliding block is in The valve seat is laterally offset, the limiting protrusion of the sliding block withdraws from the limiting stop on the valve seat, and the sealing gasket at the bottom of the sliding block leaves the air venting nozzle, thereby opening the air venting nozzle for air venting, and the telescopic airbag uses its own elasticity to shrink and restore its original state to make way for the inner core tube to fall; when the drainage is completed, the inner core tube falls and drives the water sealing plate to reseal the water outlet of the drainage valve, the push block presses down the lower stop, the elastic part pushes the limiting protrusion of the sliding block to re-insert the limiting stop on the valve seat, and the sealing gasket at the bottom of the sliding block blocks the air venting nozzle, thereby sealing the air venting nozzle, and a closed air path is formed between the air pump and the telescopic airbag, preparing for the next drainage.
[0017] Compared with the existing air pressure-opened toilet tank drain valve, the present invention eliminates the electromagnetic pressure relief valve and uses a mechanical structured air relief valve instead. The rising and falling motion of the inner core tube itself is used to push the slider of the air relief valve up and down, and the expansion and contraction of the compressed elastic member is used to allow the slider to move horizontally, so that the limit protrusion of the slider is inserted into or withdrawn from the limit stop on the valve seat, thereby realizing that the sealing pad at the bottom of the slider opens or blocks the air relief nozzle. The air relief valve of the present invention uses mechanical motion to open or close, does not require electricity consumption, has a simple structure, reliable performance, and low cost, and is more suitable for air pressure-opened toilet tank drain valves. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.
[0019] Figure 1It is a stereoscopic view of the air release valve of the present invention assembled on the air pressure-activated toilet tank drain valve;
[0020] Figure 2 is a cross-sectional view of the air relief valve of the present invention;
[0021] Figure 3 yes Figure 2 A partial cross-sectional enlarged view of the middle air relief valve at point A;
[0022] Figure 4 It is a cross-sectional view of the present invention showing the air pressure opening of the toilet tank drain valve during full drainage;
[0023] Figure 5 It is a cross-sectional view of the air release valve of the toilet tank drain valve of the present invention when the air pressure opens the drain valve to fully drain the water;
[0024] Figure 6 yes Figure 5 A partial cross-sectional enlarged view of the B part of the air relief valve when the middle and full drain is draining;
[0025] Figure 7 It is a cross-sectional view of the present invention when the air pressure opens the toilet tank drain valve and drains half of the water;
[0026] Figure 8 It is a cross-sectional view of the air release valve of the toilet tank drain valve of the present invention when the air pressure opens the drain valve halfway;
[0027] Fig. 9 yes Figure 8 An enlarged partial cross-sectional view of location C of the air relief valve when draining the middle half of the tank. DETAILED DESCRIPTION
[0028] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0029] like Figure 1-3 As shown, a vent valve 9 includes a valve seat 1, a sliding block 2, and a push block 3. The valve seat 1 is arranged on the upper part of the drain valve body 5 of the drain valve 7 through a mounting seat 90. A vent channel 11 is arranged at the bottom of the valve seat 1. One end of the vent channel 11 is an air inlet end 12. The other end of the vent channel 11 forms a vent nozzle 13. The sliding block 2 is located above the vent nozzle 13 and is slidably arranged on the valve seat 1. A sealing gasket 29 for sealing the vent nozzle 13 is arranged at the bottom of the sliding block 2. The sealing gasket 2 9 adopts a rubber gasket, and the sliding block 2 is provided with a compressed elastic member 22 between one side of the inner core tube 4 of the drain valve 7 and the valve seat 1, and the sliding block 2 is provided with a limiting protrusion 28 on the side close to the inner core tube 4, and the valve seat 1 is provided with a limiting stop 14 for clamping the limiting protrusion 28, and the sliding block 2 is also provided with an upper stop 24 and a lower stop 23 on one side of the inner core tube 4, and the lower part of the upper stop 24 is a slope 25, and the push block 3 is located between the upper stop 24 and the lower stop 23 and is arranged on the upper part of the inner core tube 4.
[0030] The valve seat 1 is formed with a cylindrical cavity 15, the air release channel 11 is arranged at the bottom 151 of the cylindrical cavity 15, the air inlet end 12 leads to the outside of the bottom 151 of the cylindrical cavity 15, the air release nozzle 13 leads to the cylindrical cavity 15, the sliding block 2 includes a column 26 and a pressure rod 27, the column 26 and the upper part of the pressure rod 27 are integrally formed, the column 26 is slidably arranged in the cylindrical cavity 15, the sealing gasket 29 is arranged at the bottom of the column 26, and the compressed elastic member 22 is arranged at the upper part of the column 26, far Between the side away from the inner core tube 4 and the cylindrical cavity 15, a limiting protrusion 28 is arranged on the side of the column 26 close to the inner core tube 4, the limiting stop 14 is a limiting hole, and the limiting hole is correspondingly arranged on the side wall of the cylindrical cavity 15, the pressure rod 27 is arranged outside the cylindrical cavity 15, close to the side of the inner core tube 4, the upper stop 24 and the lower stop 23 are respectively arranged on the upper and bottom of the pressure rod 26, the upper stop 24 is a wedge-shaped protrusion at the upper part of the pressure rod 26, and the lower stop 23 is an L-shaped horizontal hook at the bottom of the pressure rod 26.
[0031] The elastic member 22 is a spring. A transverse blind hole 21 is provided on the upper portion of the column rod 26. The spring is placed in the transverse blind hole 21. One end of the spring extends out of the transverse blind hole 21 and abuts against the side wall of the cylindrical cavity 15 of the valve seat 1.
[0032] The working principle of the air release valve of the present invention is: Figure 1-3 As shown, when the drain valve is closed to drain, the inner core tube 4 falls and drives the water sealing sheet 42 to seal the water outlet 51 of the drain valve 7, and the push block 3 presses down the stopper 23 (as shown in FIG. Figure 3 As shown in the figure), the elastic member 22 pushes the limiting protrusion 28 of the sliding block 2 to be inserted into the limiting hole of the limiting stop 14 on the valve seat 1, and the sealing gasket 29 at the bottom of the sliding block 2 blocks the air release nozzle 13, thereby sealing the air release nozzle 13; when the drain valve 7 is opened to drain, the inner core tube 4 rises, and the water sealing sheet 42 leaves the water outlet of the drain valve 7. When the inner core tube 4 rises to the point where it is engaged with the limiting device 6 of the drain valve 7 (as shown in the figure), the elastic member 22 pushes the limiting protrusion 28 of the sliding block 2 to be inserted into the limiting hole of the limiting stop 14 on the valve seat 1, and the sealing gasket 29 at the bottom of the sliding block 2 blocks the air release nozzle 13, thereby sealing the air release nozzle 13; when the drain valve 7 is opened to drain, the inner core tube 4 Figure 4 , 7 As shown in the figure, the push block 3 pushes the lower inclined surface 25 of the stopper 24, the elastic member 22 is compressed, the sliding block 2 moves upward and shifts laterally on the valve seat 1, the limiting protrusion 28 of the sliding block 2 withdraws from the limiting stopper 14 on the valve seat 1, and the sealing gasket 29 at the bottom of the sliding block 2 leaves the venting nozzle 13, thereby opening the venting nozzle 13 for venting.
[0033] like Figure 1-9As shown, a pneumatically opened toilet tank drain valve 7 includes a drain valve body 5, an inner core tube 4, a limiting device 6, a telescopic airbag 8, an air pump (not shown), an air relief valve 9, a controller (not shown), and an electronic induction switch (not shown). The air pump and the electronic induction switch are electrically connected to the controller. The limiting device 6 includes a half-row limiting device 61 and a full-row limiting device 62. The half-row limiting device 61 and the full-row limiting device 62 are arranged in the drain valve body 5. The inner core tube 4 passes through the drain valve body 5. The middle part of the inner core tube 4 is respectively matched with the half-row limiting device 61 and the full-row limiting device 62. A water sealing sheet 42 is provided at the bottom of the inner core tube 4 for blocking the water outlet 51 at the bottom of the drain valve body 5. The upper part of the inner core tube 4 extends out of the drain valve body 5 and is provided with a lifting cover 43. The lifting cover 43 includes a half-row lifting cover 431, a full-row lifting cover 432, and a water sealing sheet 42 for sealing the water outlet 51 at the bottom of the drain valve body 5. The pull cover 432, the half-row pull cover 431 and the full-row pull cover 432 are symmetrically arranged on the left and right sides of the upper end of the inner core tube 4 respectively. In order to adapt to the half-row drainage and full-row drainage of the double drainage valve, the telescopic air bags are required to be used independently. The left and right telescopic air bags 8 are respectively located below the half-row pull cover 431 and the full-row pull cover 432 and fixed on the drainage valve body 5. The telescopic air bag 8 for the left half row is connected to the half exhaust pipe 80 of the air pump through the air pipe 81, and the telescopic air bag 8 for the right full row is connected to the full exhaust pipe 89 of the air pump. In order to adapt to the half-row drainage and full-row drainage of the double drainage valve, the air release valves are required to be used independently. Therefore, the valve seats 1 of the left and right air release valves 9 are simultaneously arranged on the mounting seat 90, spaced from each other and mirrored with the inner core tube 4 as the axis. In this way, the upper stops 24 and the lower stops 23 of the left and right air release valves 9 are relative (such as Figure 3 As shown), the push block 3 of the air release valve 9 is divided into a left push portion 31 and a right push portion 32 on the inner core tube 4 of the drain valve. The left push portion 31 is higher than the right push portion 32. The left push portion 31 is located between the upper stop 24 and the lower stop 23 of the air release valve 9 on the left side, and the right push portion 32 is located between the upper stop 24 and the lower stop 23 of the air release valve 9 on the right side. The air inlet end 12 of the air release valve 9 for the left half row is connected to the air pipe 81 of the telescopic air bag 8 for the left half row and the half exhaust pipe 80 of the air pump, and the air inlet end 12 of the air release valve 9 for the right full row is connected to the air pipe 81 of the telescopic air bag 8 for the right full row and the full exhaust pipe 89 of the air pump.
[0034] like Figure 4 , 7As shown, the half-row limiting device 61 in the drain valve body 5 is higher than the full-row limiting device 62. The half-row limiting device 61 includes a half-row floating barrel 611, a half-row rotating frame 612, and a half-row hook 613. The half-row rotating frame 612 is rotatably fixed in the drain valve body 5. The half-row floating barrel 611 is rotatably arranged on one side of the half-row rotating frame 612, and the half-row hook 613 is arranged on the other side of the half-row rotating frame 612. The full-row limiting device 62 includes a full-row floating barrel 621, a full-row rotating frame 62 2. Full-row hooks 623, the full-row rotating frame 622 is rotatably fixed in the drain valve body 5, a full-row float bucket 621 is rotatably set on one side of the full-row rotating frame 622, and a full-row hook 623 is set on the other side of the full-row rotating frame 622, the inner core tube 4 passes through the center holes of the half-row rotating frame 612 and the full-row rotating frame 622 respectively, the half-row hooks 613 are snapped with the half-row card point 44 in the middle of the inner core tube 4, and the full-row hooks 623 are snapped with the full-row card point 45 in the middle of the inner core tube 4.
[0035] like Figure 1 , 4 As shown in Figures 7 and 8, the telescopic airbag 8 is arranged in a cylinder 82, and the cylinder 82 is located below the lifting cover 43 of the inner core tube 4 and is placed on the drain valve body 5. A piston push rod 83 is slidably provided in the cylinder 82, and the lower end of the piston push rod 83 is connected to the telescopic airbag 8, and the upper end of the piston push rod 83 extends out of the cylinder 82 to push the lifting cover 43 of the inner core tube 4.
[0036] like Figure 4-9 The working principle of the air pressure opening toilet tank drain valve of the present invention is as follows: when the drain valve 7 needs to be opened for drainage, the electronic sensor switch (not shown in the figure) senses people's actions, such as waving on the electronic sensor switch. The number or length of waving indicates that the drain valve needs to be opened for half drainage or full drainage. Figure 7 , 8 As shown in Figure 9, if the electronic induction switch (not shown in the figure) drains half of the water, the sensing signal of the half-row drainage is sent to the controller (not shown in the figure), and the controller turns on the air pump (not shown in the figure). The air pump inflates the telescopic airbag 8 for the left half row through the half exhaust pipe 80. The telescopic airbag 8 for the left half row expands and pushes the half-row lifting cover 431 on the left side of the inner core tube 4 of the drain valve, thereby driving the inner core tube 4 to rise, and the water sealing sheet 42 leaves the water outlet 51 of the drain valve 7, turning on the half-row drainage function of the drain valve. Because the half-row limiting device 61 is higher than the full-row limiting device 62, the half-row clamping point 44 in the middle of the inner core tube 4 is first clamped with the half-row hook 613 of the half-row limiting device 61. At this time, the full-row clamping point 45 in the middle of the inner core tube 4 has not risen to the position of the full-row hook 623 (as shown in Figure 9). Figure 7As shown in the figure, the full-row hook 623 has no effect on the full-row clamping point 45. When the half-row clamping point 44 in the middle of the inner core tube 4 is engaged with the half-row hook 613 of the half-row limiting device 61, because the left push portion 31 of the push block 3 is higher than the right push portion 32, the left push portion 31 first contacts the lower inclined surface 25 of the upper stop 24 of the left side exhaust valve 9, and the push block 3 pushes against the lower inclined surface 25 of the upper stop 24, the elastic member 21 is compressed, and the sliding block 2 moves upward and deflects laterally on the valve seat 1 of the exhaust valve 9. The limiting protrusion 28 of the sliding block 2 withdraws from the limiting stop 14 on the valve seat 1, and the bottom of the sliding block 2 The sealing pad 29 leaves the deflation nozzle 13, thereby opening the deflation nozzle 13, and the telescopic airbag 8 for the left half row is deflated through the trachea 81 and the deflation nozzle 13, and the telescopic airbag 8 for the left half row recovers its original state by its own elastic shrinkage, making way for the inner core tube 4 to fall; when the half-row drainage is completed, the half-row float bucket 611 of the half-row limiting device 61 loses buoyancy and falls, driving the half-row rotating frame 612 to rotate, and the half-row hook 613 is separated from the half-row clamping point 44 in the middle of the inner core tube 4. When the inner core tube 4 falls and drives the water sealing sheet 42 to reseal the water outlet 51 of the drainage valve, the push block 3 presses down the stopper 23 (such as Figure 3 As shown in the figure, the elastic member 21 pushes the limiting protrusion 28 of the sliding block 2 and is reinserted into the limiting hole of the limiting stop 14 on the valve seat 1. The sealing gasket 29 at the bottom of the sliding block 2 blocks the air release nozzle 13, thereby sealing the air release nozzle 13. A closed air path is formed between the air pump and the telescopic air bag 8 for the left half row, preparing for the next drainage opening.
[0037] like Figure 4 , 56, similarly, if the electronic induction switch (as shown in the figure) senses full-row drainage, it sends a full-row drainage induction signal to the controller (as shown in the figure), and the controller turns on the air pump (as shown in the figure), and the air pump inflates the telescopic airbag 8 for the full row on the right side through the full exhaust pipe 89. The inflated telescopic airbag 8 for the full row on the right side pushes the full-row lifting cover 432 on the right side of the inner core tube 4 of the drain valve, thereby driving the inner core tube 4 to rise, and the water sealing sheet 42 leaves the water outlet 51 of the drain valve, turning on the full-row drainage function of the drain valve. Because the half-row limiting device 61 is higher than the full-row limiting device 62, when the full-row card point 45 in the middle of the inner core tube 4 rises to the position of the full-row hook 623, the half-row card point 44 has exceeded the half-row card point 45. The position of the hook 613, the half-row hook 613 has no effect on the half-row clamping point 44. When the full-row clamping point 45 in the middle of the inner core tube 4 is engaged with the full-row hook 623 of the full-row limiting device 62, and because the left push portion 31 of the push block 3 is higher than the right push portion 32, the left push portion 31 first contacts the lower inclined surface 25 of the upper stop 24 of the left side air relief valve 9, and the push block 3 pushes against the lower inclined surface 25 of the upper stop 24, the elastic member 21 is compressed, and the sliding block 2 moves upward and shifts laterally on the valve seat 1 of the air relief valve 9, the limiting protrusion 28 of the sliding block 2 withdraws from the limiting stop 14 on the valve seat 1, and the sealing pad 29 at the bottom of the sliding block 2 leaves the air relief nozzle 13, and the air relief nozzle 13 is opened. The expansion of the telescopic airbag 8 for the left half row does not push the lifting cover 431 of the left half row on the inner core tube 4, and the telescopic airbag 8 for the left half row remains in its original state. At this time, the right pushing portion 32 of the pushing block 3 pushes against the lower inclined surface 25 of the upper stop 24 of the air relief valve 9 for the right full row, and the elastic member 21 is compressed. The sliding block 2 moves upward and shifts laterally on the valve seat 1, and the limiting protrusion 28 of the sliding block 2 withdraws from the limiting stop 14 on the valve seat 1, and the sealing gasket 29 at the bottom of the sliding block 2 leaves the air relief nozzle 13, thereby opening the air relief nozzle 13, and the telescopic airbag 8 for the right full row is deflated through the trachea 81 and the air relief nozzle 13, and the telescopic airbag 8 for the right full row recovers to its original state by its own elastic retraction. When the inner core tube 4 falls, it drives the water sealing plate 42 to reseal the water outlet 51 of the drain valve, and the push block 3 presses down the lower stop 23 of the right side of the air relief valve 9, and the elastic member 21 pushes the limiting protrusion 28 of the sliding block 2 and re-inserts it into the limiting hole of the limiting stop 14 on the valve seat 1, and the sealing gasket 29 at the bottom of the sliding block 2 blocks the air relief nozzle 13, thereby sealing the air relief nozzle 13, and a closed air path is formed between the air pump and the telescopic air bag 8 for the full row on the right side, preparing for the next drainage.
[0038] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.
Claims
1. A pneumatically opened toilet tank drain valve, characterized in that: It includes a drain valve body, an inner core tube, a limit device, a telescopic air bag, an air pump, a deflation valve, a controller, and an electronic induction switch. The air relief valve comprises a valve seat, a sliding block and a push block. The valve seat is arranged on the upper part of the drain valve body through a mounting seat. An air relief channel is arranged at the bottom of the valve seat. One end of the air relief channel is an air inlet end, and the other end of the air relief channel forms an air relief nozzle. The sliding block is located above the air relief nozzle and is slidably arranged on the valve seat. A sealing pad for sealing the air relief nozzle is arranged at the bottom of the sliding block. A compressed elastic member is arranged between the side of the sliding block away from the inner core tube of the drain valve and the valve seat. A limiting protrusion is arranged on the side of the sliding block close to the inner core tube of the drain valve. The valve seat is provided with a limiting stop for clamping the limiting protrusion. An upper and a lower stop are also arranged on the side of the sliding block close to the inner core tube of the drain valve. The lower part of the upper stop is an inclined surface. The push block is located between the upper and lower stops and is arranged at the upper part of the inner core tube of the drain valve. The air pump and the electronic induction switch are electrically connected to the controller. The limit device includes a half-row limit device and a full-row limit device. The half-row limit device and the full-row limit device are arranged in the drain valve body. The inner core tube passes through the drain valve body. The middle part of the inner core tube is respectively matched with the half-row limit device and the full-row limit device. A water sealing sheet is arranged at the bottom of the inner core tube for blocking the water outlet at the bottom of the drain valve body. The upper part of the inner core tube extends out of the drain valve body and is provided with a lifting cover. The lifting cover includes a half-row lifting cover and a full-row lifting cover. The half-row lifting cover and the full-row lifting cover are respectively symmetrically arranged on the left and right sides of the upper end of the inner core tube. The left and right telescopic air bags are respectively located below the half-row lifting cover and the full-row lifting cover and are fixed on the drain valve body. The telescopic air bag for the left half row is passed through The air pipe is connected to the half exhaust pipe of the air pump, the telescopic air bag for the full row on the right is connected to the full exhaust pipe of the air pump, the valve seats of the left and right relief valves are arranged on the mounting seat at the same time, spaced from each other and mirrored with the inner core tube as the axis, the upper stops and lower stops of the left and right relief valves are opposite, and the push block of the relief valve is divided into a left push part and a right push part on the inner core tube of the drain valve, the left push part is higher than the right push part, the left push part is located between the upper stop and the lower stop of the relief valve on the left side, and the right push part is located between the upper stop and the lower stop of the relief valve on the right side, the air inlet end of the relief valve for the half row on the left side is connected to the air pipe of the telescopic air bag for the half row on the left side and the half exhaust pipe of the air pump, and the air inlet end of the relief valve for the full row on the right side is connected to the air pipe of the telescopic air bag for the full row on the right side and the full exhaust pipe of the air pump.
2. A pneumatically opened toilet tank drain valve as claimed in claim 1, characterized in that: The half-row limiting device in the drain valve body is higher than the full-row limiting device. The half-row limiting device includes a half-row floating barrel, a half-row rotating frame, and a half-row hook. The half-row rotating frame is rotatably fixed in the drain valve body, a half-row floating barrel is rotatably set on one side of the half-row rotating frame, and a half-row hook is set on the other side of the half-row rotating frame. The full-row limiting device includes a full-row floating barrel, a full-row rotating frame, and a full-row hook. The full-row rotating frame is rotatably fixed in the drain valve body, a full-row floating barrel is rotatably set on one side of the full-row rotating frame, and a full-row hook is set on the other side of the full-row rotating frame. The inner core tubes pass through the center holes of the half-row rotating frame and the full-row rotating frame respectively, the half-row hooks are matched with the half-row card points in the middle of the inner core tube, and the full-row hooks are matched with the full-row card points in the middle of the inner core tube.
3. The air pressure-activated toilet tank drain valve according to claim 1, characterized in that: The telescopic airbag is arranged in the cylinder, the cylinder is located below the lifting cover of the inner core tube and is placed on the drain valve body, a piston push rod is slidably arranged in the cylinder, the lower end of the piston push rod is connected to the telescopic airbag, and the upper end of the piston push rod extends out of the cylinder to push the lifting cover of the inner core tube.
4. A pneumatically opened toilet tank drain valve as claimed in claim 1, characterized in that: A cylindrical cavity is formed on the valve seat, and an air relief channel is arranged at the bottom of the cylindrical cavity. The air inlet end leads to the outside of the bottom of the cylindrical cavity, and the air relief nozzle leads to the cylindrical cavity. The sliding block includes a column rod and a pressure rod. The column rod and the upper part of the pressure rod are formed as one piece. The column rod is slidably arranged in the cylindrical cavity, and a sealing gasket is arranged at the bottom of the column rod. The compressed elastic member is arranged at the upper part of the column rod, and is located between the side of the inner core tube away from the drain valve and the cylindrical cavity. The limiting protrusion is arranged on the side of the column rod close to the inner core tube of the drain valve. The limiting stop is a limiting hole, and the limiting hole is correspondingly arranged on the side wall of the cylindrical cavity. The pressure rod is arranged outside the cylindrical cavity, close to the side of the inner core tube of the drain valve, and the upper and lower stops are respectively arranged at the upper and bottom of the pressure rod.
5. A pneumatically opened toilet tank drain valve as claimed in claim 4, characterized in that: The elastic member is a spring, the upper part of the column rod is provided with a transverse blind hole, the spring is placed in the transverse blind hole, one end of the spring extends out of the transverse blind hole and abuts against the side wall of the columnar cavity of the valve seat.
6. The air pressure-activated toilet tank drain valve according to claim 1, characterized in that: The sealing gasket is a rubber gasket.