Floating valve element and induction flush valve with same

Abstract

The utility model provides a floating valve core and an induction flush valve with the floating valve core, which comprises a lower valve clack, a connecting column arranged on the upper end face of the lower valve clack, an upper valve clack arranged at the upper end of the connecting column, a lower sealing gasket arranged on the lower end face of the lower valve clack, and an upper sealing gasket arranged on the side end face of the upper valve clack, when water flow enters the space between the valve clack and the lower valve clack, part of the water flow flows to the upper end face of the upper valve clack through the side circulating groove, so that part of the water flow is accumulated on the upper end face of the upper valve clack, and the water flow is prevented from flowing to the lower end face of the lower valve clack. The opening of the side circulation groove is small, and water flowing in the side circulation groove can flush away impurities in the process that the upper valve clack ascends and descends in the water accumulation ring hole, so that the impurities are not prone to blocking the side circulation groove, the situation that the water cannot flow to the upper end face of the upper valve clack is avoided, the lower valve clack can seal the flowing hole in time, and the service life of the lower valve clack is prolonged. And the leakage phenomenon is not easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of flushing valves, in particular to a floating valve core and an induction flushing valve with the floating valve core. Background Art

[0002] The induction type toilet flush valve is a new type of induction flush valve, which includes a body, a fixed seat arranged at the bottom of the body, a valve disc arranged on the fixed seat, an electromagnetic valve arranged on the valve disc, and a transmitting and receiving device arranged on the front side of the body. The induction flush valve is convenient for the maintenance and installation of the induction device, and has a simple and compact structure, is multi-purpose, and can be used in a variety of occasions.

[0003] like Figure 1 As shown, the induction flushing valve in the prior art includes a valve body 1', an inlet end 2' and an outlet end 3' respectively arranged on the valve body 1', a solenoid valve 4' vertically arranged on the side end surface of the valve body 1' close to the outlet end 3', a water accumulation annular hole 5' vertically opened on the valve body 1' and located on one side of the solenoid valve 4', a flow hole 6' opened on the valve body 1' and located on the lower end surface of the water accumulation annular hole 5', a connecting outlet hole 7' opened on the valve body 1' and connected with the flow hole 6' and the outlet end 3' respectively, a connecting hole 8' opened on the valve body 1' and located on the side of the water accumulation annular hole 5', a connecting inlet hole 9' opened on the valve body 1' and connected with the connecting hole 8' and the outlet end 3' respectively, a floating valve core which can be lifted and lowered on the valve body 1' and is located in the water accumulation annular hole 5', and a floating valve core opened on the valve body 1' and located in the water accumulation annular hole 5 ' and connected to the solenoid valve 4', an inlet hole 10' opened on the valve body 1' and located in the communicating hole 8' and connected to the solenoid valve 4', a flow outlet 11' opened on the valve body 1' and located in the communicating hole 8' and connected to the solenoid valve 4', and a water accumulation valve cover 12' arranged on the valve body 1' and located in the water accumulation ring hole 5', the water accumulation valve cover 12' is located above the floating valve core, and the floating valve core includes a lower valve disc 13', and the upper end surface of the lower valve disc 13' is provided with a connecting column 14' An upper valve flap 15' is provided at the upper end of the connecting column 14', a lower sealing gasket 16' is provided at the lower end surface of the lower valve flap 13', an upper sealing gasket 17' is provided at the side end surface of the upper valve flap 15', an L-shaped hole 18' is opened between the connecting column 14' and the upper valve flap 15', the right end of the L-shaped hole 18' is opened at the side end surface of the connecting column 14', and the upper end surface of the L-shaped hole 18' is opened at the upper end surface of the upper valve flap 15'.

[0004] When the solenoid valve of the induction flushing valve is in a closed state, water flows from the inlet end through the connecting inlet hole and enters the water accumulation ring hole from the connecting hole. The water after entering accumulates in the space between the upper valve disc and the lower valve disc. Due to the continuous water flow entering from the inlet end, part of the water flows through the L-shaped hole to the upper end face of the upper valve disc, so that part of the water flows are accumulated on the upper end face of the upper valve disc. At this time, the water flow accumulated in the upper valve disc pushes the upper valve disc down in the water accumulation ring hole through the water pressure, so that the flow hole is sealed through the lower valve disc; after the induction device is sensed, the solenoid valve is started to open. After the solenoid valve is opened, the water flow accumulated in the upper valve disc enters the solenoid valve from the inlet hole, and then flows out from the outlet hole through the connecting outlet hole to the outlet end. At this time, the upper valve disc loses the accumulated water flow and no longer pushes the upper valve disc down, so that the lower valve disc no longer seals the flow hole, and the pressure of the water flowing from the flow hole pushes the lower valve disc to rise, so that the water flows from the flow hole into the connecting outlet hole and flows out from the outlet end.

[0005] Although water can flow into the upper end face of the upper valve disc through the L-shaped hole, when the water flows through the L-shaped hole multiple times, the medium in the water flow is easily blocked in the L-shaped hole, resulting in the water flow accumulated between the upper valve disc and the lower valve disc being unable to flow to the upper end face of the upper valve disc, making it impossible for the lower valve disc to seal the flow hole in time, resulting in leakage. Utility Model Content

[0006] The utility model aims to provide a floating valve core and an induction flushing valve with the floating valve core in view of the defects and shortcomings of the prior art.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a floating valve core, including a lower valve disc, a connecting column arranged on the upper end surface of the lower valve disc, an upper valve disc arranged at the upper end of the connecting column, a lower sealing gasket arranged on the lower end surface of the lower valve disc, and an upper sealing gasket arranged on the side end surface of the upper valve disc, and also includes at least one side flow groove opened on the side end surface of the upper sealing gasket.

[0008] A further improvement is that: the lower end surface of the lower valve disc is provided with an extension wall, and at least three drainage grooves are formed on the extension wall, and each of the drainage grooves is annularly arranged on the extension wall.

[0009] The induction flushing valve with the floating valve core comprises a valve body, an inlet end and an outlet end respectively arranged on the valve body, an electromagnetic valve vertically arranged on the side end surface of the valve body close to the outlet end, a water accumulation ring hole vertically opened on the valve body and located on one side of the electromagnetic valve, a flow hole opened on the valve body and located on the lower end surface of the water accumulation ring hole, a connecting outlet hole opened on the valve body and respectively connected with the flow hole and the outlet end, a connecting hole opened on the side of the water accumulation ring hole on the valve body, a connecting inlet hole opened on the valve body and respectively connected with the connecting hole and the outlet end, a floating valve core which can be lifted and lowered and is arranged on the valve body and located in the water accumulation ring hole, and a floating valve core opened on the upper position of the valve body An inlet hole in the water accumulation annular hole and connected to the solenoid valve, an outlet hole opened on the valve body and located in the connecting hole and connected to the solenoid valve, and a water accumulation valve cover arranged on the valve body and located in the water accumulation annular hole, the water accumulation valve cover is located above the floating valve core, the inlet hole is located above the floating valve core, the diameter of the flow hole is smaller than the diameter of the water accumulation annular hole, and the floating valve core includes a lower valve disc, a connecting column arranged on the upper end surface of the lower valve disc, an upper valve disc arranged at the upper end of the connecting column, a lower sealing gasket arranged on the lower end surface of the lower valve disc, an upper sealing gasket arranged on the side end surface of the upper valve disc, and at least one side flow groove opened on the side end surface of the upper sealing gasket.

[0010] A further improvement is that: the lower end surface of the lower valve disc is provided with an extension wall, and at least three drainage grooves are formed on the extension wall, and each of the drainage grooves is annularly arranged on the extension wall.

[0011] A further improvement is that a stop valve is arranged on the end of the valve body close to the inlet end.

[0012] A further improvement is that the stop valve includes a placement ring hole opened on the end of the valve body close to the inlet end, the connecting inlet hole is respectively connected with the connecting hole and the side end surface of the placement ring hole, a stop hole is opened on the valve body at the lower end of the placement ring hole, a water receiving hole is opened on the valve body at the lower end of the cut-off hole, the water receiving hole is respectively connected with the cut-off hole and the inlet end, a stop valve flap is arranged on the valve body in the placement ring hole and can be raised and lowered, a stop valve cover is arranged on the valve body in the placement ring hole, the stop valve cover is located above the stop valve flap, and a control mechanism is arranged between the stop valve flap and the stop valve cover.

[0013] A further improvement is that the control mechanism includes a control rod arranged on the stop valve cover, a longitudinal slide groove longitudinally opened on the lower end surface of the control rod, a connecting rod with a lower end arranged on the upper end of the stop valve disc and an upper end slidably arranged in the longitudinal slide groove, and the control rod is threadedly connected to the stop valve cover.

[0014] A further improvement is that a filtering device is provided on the valve body between the placement annular hole and the water accumulation annular hole.

[0015] Further improvement is: the filtering device comprises a filtering ring hole opened on the valve body between the placement ring hole and the water accumulation ring hole, a filtering cartridge is arranged on the valve body in the filtering ring hole, one end of the communicating inlet hole is connected to the communicating hole, the other end of the communicating inlet hole is connected to the placement ring hole, and the communicating inlet hole is connected to the filtering ring hole;

[0016] The filter cartridge can be lifted and lowered on the valve body and is located in the filter ring hole. A filter valve cover is provided on the valve body and is located in the filter ring hole. The filter valve cover is located above the filter cartridge and is threadedly connected to the valve body.

[0017] Further improvement is: the water accumulation valve cover is threadedly connected to the valve body and located in the water accumulation ring hole, a nut protrusion is provided on the water accumulation valve cover, an adjusting stud is threadedly connected between the water accumulation valve cover and the nut protrusion, a lifting groove is provided at the lower end of the adjusting stud, a guide column is provided on the upper end surface of the upper valve disc, and the guide column and the lifting groove are clearance-matched.

[0018] A further improvement is that an auxiliary spring is provided between the water accumulation valve cover and the upper valve disc.

[0019] A further improvement is that: a placement groove is provided on the upper end surface of the upper valve disc, and the lower end of the auxiliary spring is placed in the placement groove.

[0020] After adopting the above technical scheme, the beneficial effect of the utility model is as follows: when water flows into the space between the valve disc and the lower valve disc, part of the water flows through the side flow groove to the upper end face of the upper valve disc, so that part of the water flows are accumulated on the upper end face of the upper valve disc, and the opening of the side flow groove is relatively small and as the upper valve disc rises and falls in the water accumulation ring hole, the water flowing in the side flow groove will flush away the impurities, so that it is not easy for impurities to be blocked in the side flow groove, and the water will not be unable to flow to the upper end face of the upper valve disc, so that the lower valve disc can seal the flow hole in time, and it is not easy to leak.

[0021] Further effect: Since multiple induction flush valves are respectively connected to the main water inlet pipe during the installation of public toilets, when a single induction flush valve is damaged or needs to be repaired, it is only necessary to use a tool to twist the control rod on the induction flush valve that needs to be repaired, so that the control rod moves toward the end of the cut-off hole on the stop valve cover, gradually shortening the sliding distance of the connecting rod in the longitudinal slide groove until the top of the connecting rod abuts against the upper end of the longitudinal slide groove, thereby abutting the stop valve disc against the cut-off hole, making it impossible for water to flow from the cut-off hole into the placement ring hole, and the single induction flush valve can be controlled to be closed and opened.

[0022] Further effect: when the water flows through the filter cartridge, impurities in the water flow are filtered through the filter cartridge.

[0023] Further effects: the nut protrusion can facilitate maintenance personnel to remove the water accumulation valve cover from the valve body; when the upper valve disc rises and falls in the water accumulation ring hole, the rise and fall of the upper valve disc is guided by the cooperation of the guide column and the lifting groove, thereby reducing the lifting and shaking of the upper valve disc.

[0024] Further effect: the auxiliary spring can assist in pushing the upper valve disc down in the water ring hole, so that the lower valve disc seals the flow hole, preventing the phenomenon that the upper valve disc cannot be pushed down due to too low water pressure.

[0025] Further effect: placing the groove can limit the lower end of the auxiliary spring to prevent the auxiliary spring from moving left and right and causing bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of an induction flushing valve in the prior art;

[0028] Figure 2 It is a structural schematic diagram of the first embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the floating valve core in the utility model;

[0030] Figure 4 It is a top view of the floating valve core in the utility model;

[0031] Figure 5 It is a structural schematic diagram of the first embodiment of the utility model;

[0032] Figure 6 It corresponds to Figure 5 A magnified view of part A;

[0033] Figure 7 It is a structural schematic diagram of the second embodiment of the utility model;

[0034] Figure 8 It is a top view and cutaway view of the valve body, the water accumulation ring hole, the connecting inlet hole, and the placement ring hole of the second embodiment of the utility model;

[0035] Fig. 9 This is a top view of the valve body of the second embodiment of the utility model;

[0036] Fig.10 This is a top view of the valve body of Embodiment 3 of the present utility model;

[0037] Fig.11 It is a top view cutaway diagram of the valve body, water accumulation ring hole, connecting inlet hole, placement ring hole, and filter ring hole of the third embodiment of the utility model;

[0038] Fig.12 It corresponds to Fig.11 Cross-sectional view along line AA.

[0039] Explanation of the reference numerals: valve body 1, inlet end 2, outlet end 3, solenoid valve 4, water accumulation ring hole 5, flow hole 6, connecting outlet hole 7, connecting hole 8, connecting inlet hole 9, inlet hole 10, outlet hole 11, water accumulation valve cover 12, lower valve disc 13, connecting column 14, upper valve disc 15, lower sealing gasket 16, upper sealing gasket 17, side flow groove 18, extension wall 19, outlet hole 20, placement ring hole 21, stop hole 22, water receiving hole 23, stop valve disc 24, stop valve cover 25, control rod 26, longitudinal slide groove 27, connecting rod 28, filter ring hole 29, filter cartridge 30, filter valve cover 31, nut protrusion 32, adjusting stud 33, lifting groove 34, guide column 35, auxiliary spring 36, placement groove 37. DETAILED DESCRIPTION

[0040] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments. Example

[0041] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the technical solution adopted in this specific implementation is:

[0042] like Figure 3 , Figure 4As shown, a floating valve core comprises a lower valve disc 13, a connecting column 14 arranged on the upper end surface of the lower valve disc 13, an upper valve disc 15 arranged on the upper end of the connecting column 14, a lower sealing gasket 16 arranged on the lower end surface of the lower valve disc 13, and an upper sealing gasket 17 arranged on the side end surface of the upper valve disc 15, characterized in that it also comprises at least one side flow groove 18 opened on the side end surface of the upper sealing gasket 17. There is one side flow groove 18, which is opened longitudinally (or obliquely) on the side end surface of the upper sealing gasket 17, and there can also be multiple side flow grooves 18. When there are multiple side flow grooves 18, they are annularly and equidistantly arranged on the side end surface of the upper sealing gasket 17.

[0043] like Figure 3 As shown, the lower end surface of the lower valve disc 13 is provided with an extension wall 19 , and at least three drainage grooves 20 are opened on the extension wall 19 , and each of the drainage grooves 20 is annularly arranged on the extension wall 19 .

[0044] like Figure 2 As shown, the induction flushing valve with the floating valve core includes a valve body 1, an inlet end 2 and an outlet end 3 respectively arranged on the valve body 1, a solenoid valve 4 vertically arranged on the side end surface of the valve body 1 close to the outlet end 3, a water accumulation ring hole 5 vertically opened on the valve body 1 and located on one side of the solenoid valve 4, a flow hole 6 opened on the valve body 1 and located on the lower end surface of the water accumulation ring hole 5, a connecting outlet hole 7 opened on the valve body 1 and connected with the flow hole 6 and the outlet end 3 respectively, a connecting hole 8 opened on the side of the water accumulation ring hole 5 on the valve body 1, a connecting inlet hole 9 opened on the valve body 1 and connected with the connecting hole 8 and the outlet end 3 respectively, a floating valve core which can be lifted and lowered and is arranged on the valve body 1 and is located in the water accumulation ring hole 5, and a connecting hole 9 opened on the valve body 1 and is located in the water accumulation ring hole 5. The invention relates to a floating valve core comprising a flow inlet 10 which is located in the floating valve core and communicates with the solenoid valve 4, an outflow hole 11 which is opened on the valve body 1 and is located in the communicating hole 8 and is communicated with the solenoid valve 4, and a water accumulation valve cover 12 which is arranged on the valve body 1 and is located in the water accumulation annular hole 5, wherein the water accumulation valve cover 12 is located above the floating valve core, the flow inlet 10 is located above the floating valve core, the diameter of the flow hole 6 is smaller than the diameter of the water accumulation annular hole 5, and the floating valve core comprises a lower valve disc 13, a connecting column 14 which is arranged on the upper end surface of the lower valve disc 13, an upper valve disc 15 which is arranged on the upper end of the connecting column 14, a lower sealing gasket 16 which is arranged on the lower end surface of the lower valve disc 13, an upper sealing gasket 17 which is arranged on the side end surface of the upper valve disc 15, and at least one side flow groove 18 which is arranged on the side end surface of the upper sealing gasket 17.

[0045] The lower end surface of the lower valve flap 13 is provided with an extension wall 19, and at least three drainage grooves 20 are provided on the extension wall 19, and each of the drainage grooves 20 is annularly provided on the extension wall 19. The diameter of the extension wall 19 is smaller than the diameter of the flow hole 6. The extension wall 19 can reduce the flow area of ​​the water flow from the flow hole 6, so that after the solenoid valve 4 is closed, the phenomenon that most of the water flows out to the position of the flow hole 6 is reduced, so that the water flow can be better gradually accumulated in the space between the upper valve flap 15 and the lower valve flap 13, so that the water flow can flow into the upper end surface of the upper valve flap 15.

[0046] like Figure 5 , Figure 6 As shown, the water accumulation valve cover 12 is threadedly connected to the valve body 1 and is located in the water accumulation annular hole 5. The water accumulation valve cover 12 is provided with a nut protrusion 32. The water accumulation valve cover 12 and the nut protrusion 32 are threadedly connected with an adjusting stud 33. The lower end of the adjusting stud 33 is provided with a lifting groove 34. The upper end surface of the upper valve disc 15 is provided with a guide column 35. The guide column 35 and the lifting groove 34 are clearance-matched. The upper end surface of the adjusting stud 33 is provided with a knife groove for inserting a screwdriver or a pointed knife.

[0047] An auxiliary spring 36 is provided between the water accumulation valve cover 12 and the upper valve flap 15. The auxiliary spring 36 is a compression spring, and the spring force of the spring is less than the force of the water flow pushing the lower valve flap 13 to rise.

[0048] The upper end surface of the upper valve flap 15 is provided with a placement groove 37 , and the lower end of the auxiliary spring 36 is placed in the placement groove 37 .

[0049] The working principle of the utility model is as follows: when the solenoid valve 4 is in a closed state, water flows from the inlet end 2 through the connecting inlet hole 9 into the space between the upper valve disc 15 and the lower valve disc 13 in the water accumulation ring hole 5. Due to the continuous water flow entering from the inlet end 2, part of the water flows from the side flow groove 18 to the upper end surface of the upper valve disc 15, so that part of the water accumulates on the upper end surface of the upper valve disc 15. The opening of the side flow groove 18 is relatively small, and as the upper valve disc 15 rises and falls in the water accumulation ring hole 5, the water flowing in the side flow groove 18 will flush away impurities, so that it is not easy for impurities to be blocked on the side flow groove 18, and the water will not flow in the water. The water cannot flow to the upper end surface of the upper valve disc 15, so that the lower valve disc 13 can seal the flow hole 6 in time, and it is not easy to leak. At this time, the water accumulated in the upper valve disc 15 pushes the upper valve disc 15 down in the water ring hole 5 through the water pressure, so that the flow hole 6 is sealed through the lower valve disc 13; after the induction device is sensed, the solenoid valve 4 is started to open. After the solenoid valve 4 is opened, the water accumulated in the upper valve disc 15 enters the solenoid valve 4 from the inlet hole 10, and then flows out from the outlet hole 11 to the outlet end 3 through the connecting outlet hole 7. At this time, the upper valve disc 15 loses the accumulated water and no longer pushes the upper valve disc 15 down. As a result, the lower valve flap 13 no longer seals the flow hole 6, and the pressure of the water flowing through the flow hole 6 pushes the lower valve flap 13 to rise, so that the water flows from the flow hole 6 into the connecting hole 7 and flows out to the outlet end 3; when the upper valve flap 15 rises and falls in the water ring hole 5, the cooperation of the guide column 35 and the lifting groove 34 guides the lifting of the upper valve flap 15, thereby reducing the lifting and shaking of the upper valve flap 15; the lifting and lowering of the adjusting bolt 33 is driven by a tool to control the lifting and lowering stroke of the guide column 35 in the lifting groove 34, thereby controlling the water outlet time of the water flow at the water outlet end, such as when the adjusting bolt 33 rises, the guide column 35 is increased. The rising space in the lifting groove 34 increases the rising amplitude of the lower valve flap 13 and the upper valve flap 15 in the water accumulation ring hole 5, thereby increasing the distance between the lower valve flap 13 and the flow hole 6. The time required for the lower valve flap 13 to descend and close the flow hole 6 is longer, and vice versa; the auxiliary spring 36 can assist in pushing the upper valve flap 15 to descend in the water accumulation ring hole 5, so that the lower valve flap 13 can seal the flow hole 6 to prevent the upper valve flap 15 from being unable to be pushed down due to too low water pressure; the placement groove 37 can limit the lower end of the auxiliary spring 36 to prevent the auxiliary spring 36 from moving left and right and causing bending. Example

[0050] See also Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown, the technical solution adopted in this specific implementation is:

[0051] The induction flushing valve with the floating valve core comprises a valve body 1, an inlet end 2 and an outlet end 3 respectively arranged on the valve body 1, a solenoid valve 4 vertically arranged on the side end surface of the valve body 1 close to the outlet end 3, a water accumulation annular hole 5 vertically opened on the valve body 1 and located on one side of the solenoid valve 4, a flow hole 6 opened on the valve body 1 and located on the lower end surface of the water accumulation annular hole 5, a connecting outlet hole 7 opened on the valve body 1 and connected with the flow hole 6 and the outlet end 3 respectively, a connecting hole 8 opened on the side of the water accumulation annular hole 5 on the valve body 1, a connecting inlet hole 9 opened on the valve body 1 and connected with the connecting hole 8 and the outlet end 3 respectively, a floating valve core which can be lifted and lowered and is located in the water accumulation annular hole 5 on the valve body 1, and a connecting hole 10 opened on the valve body 1 and located in the water accumulation annular hole 5 and An inlet hole 10 connected to the solenoid valve 4, an outlet hole 11 opened on the valve body 1 and located in the connecting hole 8 and connected to the solenoid valve 4, and a water accumulation valve cover 12 arranged on the valve body 1 and located in the water accumulation annular hole 5, the water accumulation valve cover 12 is located above the floating valve core, the inlet hole 10 is located above the floating valve core, the diameter of the flow hole 6 is smaller than the diameter of the water accumulation annular hole 5, and it is characterized in that: the floating valve core includes a lower valve disc 13, a connecting column 14 arranged on the upper end surface of the lower valve disc 13, an upper valve disc 15 arranged at the upper end of the connecting column 14, a lower sealing gasket 16 arranged on the lower end surface of the lower valve disc 13, an upper sealing gasket 17 arranged on the side end surface of the upper valve disc 15, and at least one side flow groove 18 opened on the side end surface of the upper sealing gasket 17. There is one side flow groove 18 , which is longitudinally (or obliquely) opened on the side end surface of the upper sealing gasket 17 . There may also be multiple side flow grooves 18 . When there are multiple side flow grooves 18 , they are annularly and equidistantly arranged on the side end surface of the upper sealing gasket 17 .

[0052] The lower end surface of the lower valve flap 13 is provided with an extension wall 19, and at least three drainage grooves 20 are provided on the extension wall 19, and each of the drainage grooves 20 is annularly provided on the extension wall 19. The diameter of the extension wall 19 is smaller than the diameter of the flow hole 6. The extension wall 19 can reduce the flow area of ​​the water flow from the flow hole 6, so that after the solenoid valve 4 is closed, the phenomenon that most of the water flows out to the position of the flow hole 6 is reduced, so that the water flow can be better gradually accumulated in the space between the upper valve flap 15 and the lower valve flap 13, so that the water flow can flow into the upper end surface of the upper valve flap 15.

[0053] A stop valve is arranged on the end of the valve body 1 close to the inlet end 2 .

[0054] like Figure 7As shown, the stop valve includes a placement ring hole 21 opened on the end of the valve body 1 close to the inlet end 2, the communicating inlet hole 9 is respectively connected with the communicating hole 8 and the side end surface of the placement ring hole 21, a stop hole 22 is opened on the valve body 1 at the lower end of the placement ring hole 21, a water receiving hole 23 is opened on the valve body 1 at the lower end of the stop hole 22, and the water receiving hole 23 is respectively connected with the stop hole 22 and the inlet end 2, a stop valve flap 24 is arranged in the placement ring hole 21 on the valve body 1 and can be lifted and lowered, a stop valve cover 25 is arranged on the valve body 1 in the placement ring hole 21, the stop valve cover 25 is located above the stop valve flap 24, and a control mechanism is arranged between the stop valve flap 24 and the stop valve cover 25. A sealing gasket is arranged on the lower end surface of the stop valve flap 24.

[0055] The control mechanism includes a control rod 26 disposed on the stop valve cover 25, a longitudinal slide groove 27 longitudinally opened on the lower end surface of the control rod 26, and a connecting rod 28 whose lower end is disposed on the upper end of the stop valve flap 24 and whose upper end can be slidably disposed in the longitudinal slide groove 27. The control rod 26 is threadedly connected to the stop valve cover 25. A knife groove for inserting a screwdriver or a pointed knife is provided on the upper end surface of the control rod 26. When the solenoid valve 4 is opened to allow water to flow out to the outlet end 3 through the connecting outlet hole 7, the water flows upward from the stop hole 22, thereby pushing the stop valve flap 24 to rise in the placement ring hole 21. When the stop valve flap 24 rises, the connecting rod 28 slides in the longitudinal slide groove 27, thereby guiding the rise and fall of the stop valve flap 24 and reducing the phenomenon of the stop valve flap 24 being tilted and lifted.

[0056] The water accumulation valve cover 12 is threadedly connected to the valve body 1 and is located in the water accumulation annular hole 5. A nut protrusion 32 is provided on the water accumulation valve cover 12. An adjusting stud 33 is threadedly connected between the water accumulation valve cover 12 and the nut protrusion 32. A lifting groove 34 is provided at the lower end of the adjusting stud 33. A guide column 35 is provided on the upper end surface of the upper valve disc 15. The guide column 35 and the lifting groove 34 are clearance-matched.

[0057] An auxiliary spring 36 is provided between the water accumulation valve cover 12 and the upper valve disc 15. The auxiliary spring 36 is a compression spring, and the spring force of the spring is smaller than the force of the water flow pushing the lower valve disc 13 upward. The upper end surface of the adjusting stud 33 is provided with a knife groove for inserting a screwdriver or a pointed knife.

[0058] The upper end surface of the upper valve flap 15 is provided with a placement groove 37 , and the lower end of the auxiliary spring 36 is placed in the placement groove 37 .

[0059] Working principle of the utility model: when the solenoid valve 4 is in the closed state, water flows from the inlet end 2 through the water receiving hole 23 into the valve body 1 below the cut-off hole 22, then enters the placement ring hole 21 from the cut-off hole 22, and flows from the connecting inlet hole 9 into the space between the upper valve disc 15 and the lower valve disc 13 in the water accumulation ring hole 5. Due to the continuous water flow entering from the inlet end 2, part of the water flows from the side flow groove 18 to the upper end surface of the upper valve disc 15, so that part of the water flows are accumulated on the upper end surface of the upper valve disc 15. The opening of the side flow groove 18 is small, and as the upper valve disc 15 rises and falls in the water ring hole 5, the water flowing in the side flow groove 18 will flush out the impurities, so that it is not easy for the impurities to be blocked on the side flow groove 18, and the water flow will not be unable to flow to the upper end face of the upper valve disc 15, so that the lower valve disc 13 can seal the flow hole 6 in time, and it is not easy to leak. At this time, the water flow accumulated in the upper valve disc 15 pushes the upper valve disc 15 down in the water ring hole 5 through the water pressure, so as to pass through the lower valve disc The flap 13 seals the flow hole 6. At this time, the water flows are respectively accumulated in the water ring hole 5, the connecting inlet hole 9, and the placement ring hole 21. The water pressure drives the stop valve flap 24 to descend and seal the stop hole 22. After the induction device is induced, the solenoid valve 4 is started to open. After the solenoid valve 4 is opened, the water accumulated in the upper flap 15 enters the solenoid valve 4 from the inlet hole 10, and then flows out from the outlet hole 11 through the connecting outlet hole 7 to the outlet end 3. At this time, the upper flap 15 loses the accumulated water and no longer flows. The upper valve flap 15 is pushed down, so that the lower valve flap 13 no longer seals the flow hole 6. The pressure of the water flowing from the flow hole 6 pushes the lower valve flap 13 up, so that the water flows from the flow hole 6 into the connecting outlet hole 7 and flows out to the outlet end 3. At this time, the water in the water ring hole 5, the connecting inlet hole 9, and the placement ring hole 21 loses pressure, and the water flowing into the water receiving hole 23 at the inlet end 2 flows into the placement ring groove toward the stop valve, so that the stop valve flap 24 is pushed up by the water flow, so that the water can flow out smoothly from the outlet end 3;

[0060] Since multiple induction flush valves are respectively connected to the main water inlet pipe in the installation of public toilets, when a single induction flush valve is damaged or needs to be repaired, it is only necessary to use a tool to twist the control rod 26 on the induction flush valve that needs to be repaired, so that the control rod 26 moves toward the end of the cut-off hole 22 on the stop valve cover 25, gradually shortening the sliding distance of the connecting rod 28 in the longitudinal slide groove 27 until the top of the connecting rod 28 abuts against the upper end of the longitudinal slide groove 27, thereby abutting the stop valve disc 24 against the cut-off hole 22, so that water cannot flow from the cut-off hole 22 into the placement ring hole 21, and the single induction flush valve can be controlled to be closed and opened;

[0061] When the upper valve disc 15 is lifted and lowered in the water annular hole 5, the lifting and lowering of the upper valve disc 15 is guided by the cooperation of the guide column 35 and the lifting groove 34, thereby reducing the lifting and shaking of the upper valve disc 15; the lifting and lowering of the adjusting bolt 33 is driven by a tool to control the lifting and lowering stroke of the guide column 35 in the lifting groove 34, thereby controlling the water outlet time of the water flow at the water outlet end. For example, when the adjusting bolt 33 is lifted, the lifting space of the guide column 35 in the lifting groove 34 is increased, thereby increasing the lifting and lowering of the lower valve disc 13 and the upper valve disc 15 in the water annular hole 5. The rising amplitude increases the distance between the lower valve flap 13 and the flow hole 6, so that the time required for the lower valve flap 13 to descend and close the flow hole 6 is longer, and vice versa; the auxiliary spring 36 can assist in pushing the upper valve flap 15 to descend in the water ring hole 5, so that the lower valve flap 13 can seal the flow hole 6 and prevent the phenomenon that the upper valve flap 15 cannot be pushed down due to too low water pressure; the groove 37 can be placed to limit the lower end of the auxiliary spring 36 to prevent the auxiliary spring 36 from moving left and right and causing bending. Example

[0062] See also Figure 3 , Figure 4 , Figure 6 , Fig.10 , Fig.11 , Fig.12 As shown, the technical solution adopted in this specific implementation is:

[0063] The induction flushing valve with the floating valve core comprises a valve body 1, an inlet end 2 and an outlet end 3 respectively arranged on the valve body 1, a solenoid valve 4 vertically arranged on the side end surface of the valve body 1 close to the outlet end 3, a water accumulation annular hole 5 vertically opened on the valve body 1 and located on one side of the solenoid valve 4, a flow hole 6 opened on the valve body 1 and located on the lower end surface of the water accumulation annular hole 5, a connecting outlet hole 7 opened on the valve body 1 and connected with the flow hole 6 and the outlet end 3 respectively, a connecting hole 8 opened on the side of the water accumulation annular hole 5 on the valve body 1, a connecting inlet hole 9 opened on the valve body 1 and connected with the connecting hole 8 and the outlet end 3 respectively, a floating valve core which can be lifted and lowered and is located in the water accumulation annular hole 5 on the valve body 1, and a connecting hole 10 opened on the valve body 1 and located in the water accumulation annular hole 5 and An inlet hole 10 connected to the solenoid valve 4, an outlet hole 11 opened on the valve body 1 and located in the connecting hole 8 and connected to the solenoid valve 4, and a water accumulation valve cover 12 arranged on the valve body 1 and located in the water accumulation annular hole 5, the water accumulation valve cover 12 is located above the floating valve core, the inlet hole 10 is located above the floating valve core, the diameter of the flow hole 6 is smaller than the diameter of the water accumulation annular hole 5, and it is characterized in that: the floating valve core includes a lower valve disc 13, a connecting column 14 arranged on the upper end surface of the lower valve disc 13, an upper valve disc 15 arranged at the upper end of the connecting column 14, a lower sealing gasket 16 arranged on the lower end surface of the lower valve disc 13, an upper sealing gasket 17 arranged on the side end surface of the upper valve disc 15, and at least one side flow groove 18 opened on the side end surface of the upper sealing gasket 17. There is one side flow groove 18 , which is longitudinally (or obliquely) opened on the side end surface of the upper sealing gasket 17 . There may also be multiple side flow grooves 18 . When there are multiple side flow grooves 18 , they are annularly and equidistantly arranged on the side end surface of the upper sealing gasket 17 .

[0064] The lower end surface of the lower valve flap 13 is provided with an extension wall 19, and at least three drainage grooves 20 are provided on the extension wall 19, and each of the drainage grooves 20 is annularly provided on the extension wall 19. The diameter of the extension wall 19 is smaller than the diameter of the flow hole 6. The extension wall 19 can reduce the flow area of ​​the water flow from the flow hole 6, so that after the solenoid valve 4 is closed, the phenomenon that most of the water flows out to the position of the flow hole 6 is reduced, so that the water flow can be better gradually accumulated in the space between the upper valve flap 15 and the lower valve flap 13, so that the water flow can flow into the upper end surface of the upper valve flap 15.

[0065] A stop valve is arranged on the end of the valve body 1 close to the inlet end 2 .

[0066] The stop valve comprises a placement ring hole 21 provided at the end of the valve body 1 close to the inlet end 2, the communicating inlet hole 9 is respectively connected with the communicating hole 8 and the side end face of the placement ring hole 21, a stop hole 22 is provided at the lower end of the placement ring hole 21 on the valve body 1, a water receiving hole 23 is provided at the lower end of the stop hole 22 on the valve body 1, and the water receiving hole 23 is respectively connected with the stop hole 22 and the inlet end 2, a stop valve flap 24 is provided in the placement ring hole 21 on the valve body 1 and can be lifted and lowered, a stop valve cover 25 is provided in the placement ring hole 21 on the valve body 1, the stop valve cover 25 is located above the stop valve flap 24, and a control mechanism is provided between the stop valve flap 24 and the stop valve cover 25. A sealing gasket is provided at the lower end face of the stop valve flap 24.

[0067] The control mechanism includes a control rod 26 disposed on the stop valve cover 25, a longitudinal slide groove 27 longitudinally opened on the lower end surface of the control rod 26, and a connecting rod 28 whose lower end is disposed on the upper end of the stop valve flap 24 and whose upper end can be slidably disposed in the longitudinal slide groove 27. The control rod 26 is threadedly connected to the stop valve cover 25. A knife groove for inserting a screwdriver or a pointed knife is opened on the upper end surface of the control rod 26. When the solenoid valve 4 is opened to allow water to flow out to the outlet end 3 through the connecting outlet hole 7, the water flows upward from the stop hole 22, thereby pushing the stop valve flap 24 to rise in the placement ring hole 21. When the stop valve flap 24 rises, the connecting rod 28 slides in the longitudinal slide groove 27, thereby guiding the rise and fall of the stop valve flap 24 and reducing the phenomenon of the stop valve flap 24 tilting and rising.

[0068] A filtering device is provided on the valve body 1 between the placement annular hole 21 and the water accumulation annular hole 5 .

[0069] The filtering device includes a filtering ring hole 29 opened on the valve body 1 between the placement ring hole 21 and the water accumulation ring hole 5, a filtering cartridge 30 is arranged on the valve body 1 in the filtering ring hole 29, one end of the communicating inlet hole 9 is connected to the communicating hole 8, the other end of the communicating inlet hole 9 is connected to the placement ring hole 21, and the communicating inlet hole 9 is connected to the filtering ring hole 29;

[0070] like Fig.11 As shown, the filter cartridge 30 can be lifted and lowered on the valve body 1 and located in the filter ring hole 29. A filter valve cover 31 is provided on the valve body 1 and located in the filter ring hole 29. The filter valve cover 31 is located above the filter cartridge 30 and is threadedly connected to the valve body 1. The filter cartridge 30 filters algae impurities or particulate impurities, and the filter cartridge 30 with a corresponding filter hole diameter is selected according to the size of the substance to be filtered.

[0071] The water accumulation valve cover 12 is threadedly connected to the valve body 1 and is located in the water accumulation annular hole 5. The water accumulation valve cover 12 is provided with a nut protrusion 32. The water accumulation valve cover 12 and the nut protrusion 32 are threadedly connected with an adjusting stud 33. The lower end of the adjusting stud 33 is provided with a lifting groove 34. The upper end surface of the upper valve disc 15 is provided with a guide column 35. The guide column 35 and the lifting groove 34 are clearance-matched. The upper end surface of the adjusting stud 33 is provided with a knife groove for inserting a screwdriver or a pointed knife.

[0072] An auxiliary spring 36 is provided between the water accumulation valve cover 12 and the upper valve flap 15. The auxiliary spring 36 is a compression spring, and the spring force of the spring is less than the force of the water flow pushing the lower valve flap 13 to rise.

[0073] The upper end surface of the upper valve flap 15 is provided with a placement groove 37 , and the lower end of the auxiliary spring 36 is placed in the placement groove 37 .

[0074] The working principle of the utility model is as follows: when the solenoid valve 4 is in the closed state, water flows from the inlet end 2 through the water receiving hole 23 into the valve body 1 located below the cut-off hole 22, then enters the placement ring hole 21 from the cut-off hole 22, and first flows into the filter ring hole 29 from the other end of the connecting inlet hole 9, and then enters the water accumulation ring hole 5 from one end of the connecting inlet hole 9, which is located between the upper valve disc 15 and the lower valve disc 13. When the water flows through the filter ring hole 29, some impurities in the water flow are filtered through the filter cartridge 30. Due to the continuous water flow entering the inlet end 2, part of the water flows from the side. The groove 18 flows toward the upper end face of the upper valve disc 15, so that part of the water flow accumulates on the upper end face of the upper valve disc 15. The opening of the side flow groove 18 is relatively small, and as the upper valve disc 15 rises and falls in the water accumulation ring hole 5, the water flow in the side flow groove 18 will flush out the impurities, so that it is not easy for the impurities to be blocked on the side flow groove 18, and the water flow will not be unable to flow to the upper end face of the upper valve disc 15, so that the lower valve disc 13 can seal the flow hole 6 in time, and it is not easy to leak. At this time, the water flow accumulated in the upper valve disc 15 pushes the upper valve disc 15 down in the water accumulation ring hole 5 through the water pressure, thereby The lower valve disc 13 seals the flow hole 6. At this time, the water flows are respectively accumulated in the water ring hole 5, the connecting inlet hole 9, and the placement ring hole 21. The water pressure drives the stop valve disc 24 to descend to seal the stop hole 22. After the induction device is induced, the solenoid valve 4 is started to open. After the solenoid valve 4 is opened, the water accumulated in the upper valve disc 15 enters the solenoid valve 4 from the inlet hole 10, and then flows out from the outlet hole 11 through the connecting outlet hole 7 to the outlet end 3. At this time, the upper valve disc 15 loses the accumulated water and no longer pushes the upper valve disc 15 to descend, so that the lower valve disc 13 no longer seals the flow hole 6. The pressure of the water flowing from the flow hole 6 pushes the lower valve disc 13 up, so that the water flows from the flow hole 6 into the connecting outlet hole 7 and flows out to the outlet end 3. At this time, the water in the water ring hole 5, the connecting inlet hole 9, and the placement ring hole 21 loses pressure, and the water flowing into the water receiving hole 23 at the inlet end 2 flows into the placement ring groove toward the stop valve, thereby pushing the stop valve disc 24 up through the water flow, so that the water can flow out smoothly from the outlet end 3; when it is necessary to clean the impurities on the filter cartridge 30, the filter valve cover 31 is driven to be removed from the valve body 1 by a tool, and then the filter cartridge 30 is taken out from the filter ring hole 29 for cleaning;

[0075] Since multiple induction flush valves are respectively connected to the main water inlet pipe in the installation of public toilets, when a single induction flush valve is damaged or needs to be repaired, it is only necessary to use a tool to twist the control rod 26 on the induction flush valve that needs to be repaired, so that the control rod 26 moves toward the end of the cut-off hole 22 on the stop valve cover 25, gradually shortening the sliding distance of the connecting rod 28 in the longitudinal slide groove 27 until the top of the connecting rod 28 abuts against the upper end of the longitudinal slide groove 27, thereby abutting the stop valve disc 24 against the cut-off hole 22, so that water cannot flow from the cut-off hole 22 into the placement ring hole 21, and the single induction flush valve can be controlled to be closed and opened;

[0076] When the upper valve disc 15 is lifted and lowered in the water annular hole 5, the lifting and lowering of the upper valve disc 15 is guided by the cooperation of the guide column 35 and the lifting groove 34, thereby reducing the lifting and shaking of the upper valve disc 15; the lifting and lowering of the adjusting bolt 33 is driven by a tool to control the lifting and lowering stroke of the guide column 35 in the lifting groove 34, thereby controlling the water outlet time of the water flow at the water outlet end. For example, when the adjusting bolt 33 is lifted, the lifting space of the guide column 35 in the lifting groove 34 is increased, thereby increasing the lifting and lowering of the lower valve disc 13 and the upper valve disc 15 in the water annular hole 5. The rising amplitude increases the distance between the lower valve flap 13 and the flow hole 6, so that the time required for the lower valve flap 13 to descend and close the flow hole 6 is longer, and vice versa; the auxiliary spring 36 can assist in pushing the upper valve flap 15 to descend in the water ring hole 5, so that the lower valve flap 13 can seal the flow hole 6 and prevent the phenomenon that the upper valve flap 15 cannot be pushed down due to too low water pressure; the groove 37 can be placed to limit the lower end of the auxiliary spring 36 to prevent the auxiliary spring 36 from moving left and right and causing bending.

[0077] The utility model is intended to protect the structure of the product. The model of each component is not the content of the utility model, and it is also a known technology. Any component on the market that can achieve the above-mentioned function of the utility model can be selected and applied as a floating valve core and an induction flushing valve with the floating valve core. Therefore, the model and other parameters of the component are not described in detail in this utility model. The contribution of the utility model lies in the scientific combination of various components.

[0078] The above shows and describes the basic principle and main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents. Anything not described in detail in the utility model is a well-known technology of those skilled in the art.

Claims

1. A floating valve core, comprising a lower valve disc, a connecting column arranged on the upper end surface of the lower valve disc, an upper valve disc arranged on the upper end of the connecting column, a lower sealing gasket arranged on the lower end surface of the lower valve disc, and an upper sealing gasket arranged on the side end surface of the upper valve disc, characterized in that: It also includes at least one side flow groove opened on the side end surface of the upper sealing gasket.

2. A floating valve core according to claim 1, characterized in that: The lower end surface of the lower valve disc is provided with an extension wall, and at least three drainage grooves are formed on the extension wall, and each of the drainage grooves is annularly arranged on the extension wall.

3. An induction flushing valve with a floating valve core, comprising a valve body, an inlet end and an outlet end respectively arranged on the valve body, an electromagnetic valve vertically arranged on the side end surface of the valve body close to the outlet end, a water accumulation ring hole vertically opened on the valve body and located on one side of the electromagnetic valve, a flow hole opened on the valve body and located on the lower end surface of the water accumulation ring hole, a connecting hole opened on the valve body and connected to the flow hole and the outlet end respectively, a connecting hole opened on the side of the water accumulation ring hole on the valve body, and a connecting hole opened on the valve body and connected to the connecting holes respectively A connecting inlet hole connected to the outlet end, a floating valve core which can be lifted and lowered on the valve body and located in the water annular hole, an inlet hole which is opened on the valve body and located in the water annular hole and connected to the solenoid valve, an outlet hole which is opened on the valve body and located in the connecting hole and connected to the solenoid valve, and a water accumulation valve cover which is arranged on the valve body and located in the water accumulation annular hole, the water accumulation valve cover is located above the floating valve core, the inlet hole is located above the floating valve core, the diameter of the flow hole is smaller than the diameter of the water accumulation annular hole, and it is characterized in that: The floating valve core includes a lower valve disc, a connecting column arranged on the upper end surface of the lower valve disc, an upper valve disc arranged on the upper end of the connecting column, a lower sealing gasket arranged on the lower end surface of the lower valve disc, an upper sealing gasket arranged on the side end surface of the upper valve disc, and at least one side flow groove opened on the side end surface of the upper sealing gasket.

4. The induction flush valve with a floating valve core according to claim 3, characterized in that: The lower end surface of the lower valve disc is provided with an extension wall, and at least three drainage grooves are formed on the extension wall, and each of the drainage grooves is annularly arranged on the extension wall.

5. The induction flush valve with a floating valve core according to claim 3, characterized in that: A stop valve is arranged on the end of the valve body close to the inlet end.

6. The induction flush valve with a floating valve core according to claim 5, characterized in that: The stop valve includes a placement ring hole opened on the end of the valve body close to the inlet end, the connecting inlet hole is respectively connected with the connecting hole and the side end surface of the placement ring hole, a stop hole is opened on the valve body at the lower end of the placement ring hole, a water receiving hole is opened on the valve body at the lower end of the stop hole, the water receiving holes are respectively connected with the stop hole and the inlet end, a stop valve flap is arranged in the placement ring hole on the valve body and can be raised and lowered, a stop valve cover is arranged on the valve body in the placement ring hole, the stop valve cover is located above the stop valve flap, and a control mechanism is arranged between the stop valve flap and the stop valve cover.

7. The induction flush valve with a floating valve core according to claim 6, characterized in that: The control mechanism includes a control rod arranged on the stop valve cover, a longitudinal slide groove longitudinally opened on the lower end surface of the control rod, and a connecting rod with a lower end arranged on the upper end of the stop valve disc and an upper end slidably arranged in the longitudinal slide groove. The control rod is threadedly connected to the stop valve cover.

8. The induction flush valve with a floating valve core according to claim 6, characterized in that: A filtering device is arranged on the valve body between the placement annular hole and the water accumulation annular hole.

9. The induction flush valve with a floating valve core according to claim 8, characterized in that: The filtering device comprises a filtering ring hole opened on the valve body between the placement ring hole and the water accumulation ring hole, a filtering cartridge is arranged on the valve body in the filtering ring hole, one end of the communicating inlet hole is connected to the communicating hole, the other end of the communicating inlet hole is connected to the placement ring hole, and the communicating inlet hole is connected to the filtering ring hole; The filter cartridge can be lifted and lowered on the valve body and is located in the filter ring hole. A filter valve cover is provided on the valve body and is located in the filter ring hole. The filter valve cover is located above the filter cartridge and is threadedly connected to the valve body.

10. The induction flush valve with a floating valve core according to claim 3, characterized in that: The water accumulation valve cover is threadedly connected to the valve body and is located in the water accumulation ring hole. A nut protrusion is provided on the water accumulation valve cover. An adjusting stud is threadedly connected between the water accumulation valve cover and the nut protrusion. A lifting groove is provided at the lower end of the adjusting stud. A guide column is provided on the upper end surface of the upper valve disc, and a clearance is matched between the guide column and the lifting groove.

11. The induction flush valve with a floating valve core according to claim 3, characterized in that: An auxiliary spring is arranged between the water accumulation valve cover and the upper valve disc.

12. The induction flush valve with a floating valve core according to claim 11, characterized in that: The upper end surface of the upper valve disc is provided with a placement groove, and the lower end of the auxiliary spring is placed in the placement groove.

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