Anti-blocking drainage flow control valve

Abstract

The invention relates to the technical field of valves, in particular to an anti-blocking drainage flow control valve. An anti-blocking drainage flow control valve comprises a valve body and a blocking mechanism, a valve seat is arranged in the valve body, and a liquid channel is formed in the valve seat. The plugging mechanism comprises a plugging assembly and an adjusting assembly, the plugging assembly comprises a valve element, and the adjusting assembly comprises a blocking disc, a limiting unit and an adjusting unit. The blocking mechanism has a completely-opened state and a closed state, and in the process that the blocking mechanism is converted into the closed state from the completely-opened state, the blocking disc moves downwards to the closed position earlier than the valve element. The limiting unit limits movement of the blocking disc and shares part of impact of water flow with the blocking disc so as to reduce water flow impact force acting on the valve element, and therefore the plugging mechanism can be converted into the closed state more easily. According to the anti-blocking drainage flow control valve, the problems that an existing valve is difficult to close, the cavitation phenomenon is prone to occurring, and impurities in water affect the sealing face of a valve element are solved.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically to a clog-resistant drainage flow control valve. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. Based on their function, they can be classified into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or pressure relief. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media.

[0003] A gate valve, also known as a stop valve, is a forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. When the medium enters the valve from below the valve disc, the operating force must overcome the frictional force of the valve stem and packing, as well as the thrust generated by the medium pressure. The force required to close the valve is greater than the force required to open it, so the valve stem diameter needs to be increased accordingly; otherwise, valve stem bending may occur. Gate valves are classified into three types according to their connection method: flange connection, threaded connection, and welded connection. With the advent of self-sealing valves, the medium flow direction in gate valves has changed to entering the valve cavity from above the valve disc. In this case, under the action of medium pressure, the force required to close the valve decreases, while the force required to open the valve increases, allowing the valve stem diameter to be reduced accordingly.

[0004] For example, the invention patent CN118188864B provides a micro-flow control valve. It uses a control system in the diaphragm head structure and an air supply device in the controller to drive the integral valve core rod. The 1mm diameter needle-shaped valve core is machined using micro-wire cutting and electrolytic polishing processes, achieving a machining tolerance of less than 0.003mm. However, when this control valve is used in "bottom-in, high-out" applications, the valve core is difficult to close under water pressure. Furthermore, if the pressure difference between the inlet and outlet increases during valve closure, cavitation occurs, and the greater the pressure difference, the more severe the cavitation. Simultaneously, the water may contain impurities and metal particles, which can impact the valve core when the valve is open, potentially damaging its sealing surface. Summary of the Invention

[0005] This invention provides a clog-resistant drainage flow control valve to solve the problems of existing valves being difficult to close, prone to cavitation, and having impurities in the water affecting the sealing surface of the valve core.

[0006] The present invention provides an anti-clogging drainage flow control valve with the following technical solution: An anti-clogging drainage flow control valve includes a valve body and a sealing mechanism. A valve seat is provided within the valve body, dividing the internal space of the valve body into an outlet chamber and an inlet chamber distributed vertically. A liquid channel penetrating the upper and lower surfaces of the valve seat is provided on the valve seat.

[0007] The sealing mechanism includes a sealing component and an adjusting component. The sealing component includes a valve core, which is slidably disposed within the outlet chamber. The valve core abuts against the valve seat and seals the liquid passage. The adjusting component includes a baffle plate, a limiting unit, and an adjusting unit. The baffle plate is slidably disposed within the outlet chamber or the liquid passage, and is positioned below the valve core. The baffle plate has multiple through-hole components, each including multiple filter holes. The adjusting unit adjusts the total effective flow area formed by all the filter holes according to the water pressure in the inlet chamber, so that the total effective flow area increases with increasing water pressure in the inlet chamber.

[0008] The blocking mechanism has a fully open state and a closed state. In the fully open state, both the baffle plate and the valve core are out of contact with the valve seat. In the closed state, the valve core blocks the liquid passage, and the baffle plate is inside the liquid passage. When the baffle plate and the valve core move downwards, the blocking mechanism changes from the fully open state to the closed state, with the baffle plate moving downwards to the closed position before the valve core. The limiting unit restricts the movement of the baffle plate and shares some of the water flow impact with the baffle plate to reduce the water flow impact force acting on the valve core.

[0009] Furthermore, a valve cover is fixedly installed on the upper side of the valve body, and a vertically arranged first installation channel is opened on the valve cover.

[0010] The valve core includes a first connecting rod, a sealing disc, and a first rubber ring. The first connecting rod is vertically positioned and rotatably and vertically movable within a first mounting channel, with the first connecting rod and the first mounting channel threaded together. The sealing disc is fixedly positioned at the lower end of the first connecting rod. The first rubber ring is fixedly positioned on the lower side of the sealing disc, and is used to abut against the upper side of the valve seat, working together with the sealing disc to seal the liquid passage.

[0011] Furthermore, a second mounting channel is provided on the sealing disc, and the second mounting channel and the first connecting rod are coaxially arranged. A first stop is fixedly provided at the lower end of the second mounting channel. A second connecting rod is fixedly provided on the sealing disc, and the second connecting rod is slidably disposed within the second mounting channel. A second stop is fixedly provided at the upper end of the second connecting rod. The lower side of the second stop is used to abut against the first stop.

[0012] Furthermore, at least one horizontally positioned first limiting groove is provided within the second installation channel. The adjustment assembly also includes at least one blocking unit, which comprises a first spring and a first slider. The first slider is horizontally slidably disposed within the first limiting groove. The first spring connects the first slider to the groove wall of the first limiting groove.

[0013] The first slider has a first inclined surface and a second inclined surface with opposite inclination directions at one end near the second connecting rod. The first inclined surface is located above the second inclined surface. When the lower side of the second stop block abuts against the first stop block, the second inclined surface and the upper side of the second stop block abut against each other, at which point the blocking disc and the valve core move up and down synchronously.

[0014] Furthermore, a retaining ring is fixedly installed within the liquid channel, and the retaining ring and the liquid channel are coaxially arranged. At least one horizontally arranged second limiting groove is formed within the liquid channel, positioned above the retaining ring. The limiting unit includes a second spring and a second slider, with the second slider horizontally slidably disposed within the second limiting groove. The second spring connects the second slider to the groove wall of the second limiting groove.

[0015] The second slider is used to abut against the blocking plate. The side of the second slider near the blocking plate has a third and a fourth inclined surface with opposite directions, and the third inclined surface is above the fourth inclined surface. When the lower side of the blocking plate abuts against the retaining ring, the upper side of the blocking plate abuts against the fourth inclined surface, and the second slider is used to limit the blocking plate.

[0016] Furthermore, the multiple through-hole assembly is divided into multiple first through-hole units and multiple second through-hole units. The number of filter holes in the first through-hole unit is greater than the number of filter holes in the second through-hole unit. The adjustment unit includes an adjustment disk, which is coaxially arranged with a blocking disk, and the adjustment disk is rotatably mounted on the blocking disk. The adjustment disk has multiple first openings and multiple second openings. The flow area of ​​the first opening is greater than the flow area of ​​the second opening.

[0017] The adjustment unit has a first state and a second state. In the first state, each first opening corresponds to a second through-hole unit, and each second opening corresponds to a first through-hole unit. In the second state, each first opening corresponds to a first through-hole unit, and each second opening corresponds to a second through-hole unit. When the adjustment disc rotates clockwise, the adjustment unit changes from the first state to the second state.

[0018] Furthermore, the adjusting disc has at least one arc groove, with the arc groove forming a first side and a second side along two sidewalls of the adjusting disc's circumference. Along the direction of forward rotation of the adjusting disc, the second side is positioned in front of the first side.

[0019] At least one adjusting block is fixedly mounted on the lower side of the blocking plate, and the adjusting block is slidably disposed within the arc groove. The adjusting block has a first flow channel and a second flow channel. The first flow channel is arranged radially along the blocking plate, and the second flow channel is arranged circumferentially along the blocking plate. The end of the second flow channel near the second side of the arc groove communicates with the first flow channel, and the end of the second flow channel near the first side of the arc groove communicates with the arc groove itself.

[0020] At least one connecting channel is provided within the liquid channel, with both ends of the connecting channel connected to the liquid channel, and one end of the connecting channel positioned above the other end. When the baffle plate and the baffle ring abut against each other, the upper end of the connecting channel communicates with the first flow channel. When the adjusting unit is in the first state, the adjusting block abuts against the first side of the arc groove. When the adjusting unit is in the second state, the adjusting block abuts against the second side of the arc groove.

[0021] Furthermore, a torsion spring is provided between the regulating plate and the blocking plate. When the liquid flowing out of the second flow channel exerts a force on the regulating plate and is sufficient to overcome the torsion of the torsion spring, the regulating plate rotates relative to the blocking plate.

[0022] Furthermore, a handwheel is fixedly installed at the upper end of the first connecting rod.

[0023] Furthermore, the anti-clogging drainage flow control valve also includes a sealing mechanism, which comprises a compression block and multiple second sealing rings. The second sealing rings are disposed within a first mounting channel, coaxially arranged with the first connecting rod, and positioned outside the first connecting rod. The multiple second sealing rings are sequentially distributed along a vertical direction to seal the gap between the first connecting rod and the first mounting channel. The compression block is fixedly connected to the valve cover and abuts against the uppermost second sealing ring.

[0024] The beneficial effects of this invention are as follows: In the anti-clogging drainage flow control valve of this invention, when the sealing mechanism is fully open, the water flow in the inlet chamber enters the outlet chamber through the liquid channel. Because the baffle plate is located closer to the liquid channel than the valve core, the water flow passing through the liquid channel directly impacts the baffle plate, thereby reducing the impact of the water flow on the valve core.

[0025] When the sealing mechanism needs to be switched to the closed state, the valve core and the baffle plate move downwards. The baffle plate moves downwards to the closed position before the valve core. At this time, the limit unit restricts the movement of the baffle plate and shares some of the water flow impact with the baffle plate, thereby reducing the water flow impact force acting on the valve core. This makes it easier for the valve core to move downwards, thus making it easier for the sealing mechanism to switch to the closed state. At the same time, the water flows through the filter hole, which filters impurities in the water, preventing particles in the water from adhering to the contact surface of the valve seat and valve core, affecting its sealing effect.

[0026] When the sealing mechanism changes from the fully open state to the closed state, and the water pressure in the inlet chamber suddenly increases, the regulating unit adjusts the total effective flow area formed by all filter holes according to the water pressure in the inlet chamber, so that it increases accordingly with the increase of water pressure, thereby timely adjusting the pressure difference in the outlet chamber, maintaining the stability of the pressure difference between the inlet chamber and the outlet chamber, and thus reducing the occurrence of cavitation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of an anti-clogging drainage flow control valve provided in an embodiment of the present invention; Figure 2 An exploded view of an anti-clogging drainage flow control valve provided in an embodiment of the present invention; Figure 3 A side view of an anti-clogging drainage flow control valve provided in an embodiment of the present invention; Figure 4 for Figure 3 Sectional view along the middle AA direction; Figure 5 A schematic diagram of the fully open state of an anti-clogging drainage flow control valve provided in an embodiment of the present invention; Figure 6 A schematic diagram of the structure of an anti-clogging drainage flow control valve when the valve core and valve seat are out of contact, provided in an embodiment of the present invention; Figure 7 A schematic diagram of the regulating assembly of an anti-clogging drainage flow control valve provided in an embodiment of the present invention; Figure 8 A schematic diagram of the regulating component of an anti-clogging drainage flow control valve provided in an embodiment of the present invention in a first state; Figure 9 A schematic diagram of the regulating component of an anti-clogging drainage flow control valve provided in an embodiment of the present invention in a second state; Figure 10 An exploded view of the regulating assembly of an anti-clogging drainage flow control valve provided in an embodiment of the present invention; Figure 11 for Figure 4 Enlarged view of point B in the middle; Figure 12 for Figure 4 A magnified view of point C in the middle.

[0029] In the diagram: 101, handwheel; 102, squeezing block; 103, valve cover; 104, second sealing ring; 106, sealing disc; 1061, first slider; 1062, first connecting rod; 1063, first spring; 107, blocking disc; 1071, filter hole; 1072, adjusting disc; 1073, torsion spring; 108, valve body; 109, valve seat; 1091, second slider; 1092, retaining ring; 1093, second spring; 110, connecting channel; 111, water inlet; 112, water outlet; 200, water outlet chamber; 210, water inlet chamber; 220, liquid channel; 230, arc groove; 231, adjusting block; 232, first flow channel; 300, second installation channel; 310, second connecting rod; 320, first opening; 330, second opening. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Reference Figures 1 to 12 As shown, an embodiment of the present invention provides a clog-resistant drainage flow control valve, comprising a valve body 108 and a sealing mechanism. A valve seat 109 is fixedly disposed within the valve body 108, dividing the internal space of the valve body 108 into an outlet chamber 200 and an inlet chamber 210 arranged vertically. The valve seat 109 has an outlet 112 communicating with the outlet chamber 200 and an inlet 111 communicating with the inlet chamber 210. A liquid channel 220 penetrating its upper and lower surfaces is provided on the valve seat 109, the liquid channel 220 being vertically arranged and communicating with both the inlet chamber 210 and the outlet chamber 200.

[0032] The sealing mechanism includes a sealing component and an adjusting component. The sealing component includes a valve core, which is slidably disposed within the water outlet chamber 200. The valve core is used to abut against the upper end face of the valve seat 109 and to seal the liquid passage 220.

[0033] The regulating assembly includes a baffle plate 107, a limiting unit, and an regulating unit. The baffle plate 107 is slidably disposed within the outlet chamber 200 or the liquid channel 220, and is located below the valve core. The baffle plate 107 has multiple through-hole assemblies, each including multiple filter holes 1071. The filter holes 1071 filter the water flowing through the liquid channel 220. The regulating unit adjusts the total effective flow area formed by all the filter holes 1071 according to the water pressure in the inlet chamber 210, so that the total effective flow area increases with the increase of the water pressure in the inlet chamber 210.

[0034] The blocking mechanism has a fully open state and a closed state. In the fully open state, both the blocking disc 107 and the valve core are out of contact with the valve seat 109. In the closed state, the valve core blocks the liquid passage 220, and the blocking disc 107 is inside the liquid passage 220.

[0035] When the blocking disc 107 and the valve core move downwards, the blocking mechanism changes from a fully open state to a closed state. The blocking disc 107 moves downwards to the closed position before the valve core. (The position of the blocking disc 107 when it is in the closed state is the closed position). The limiting unit restricts the movement of the blocking disc 107 and shares part of the water flow impact with the blocking disc 107 to reduce the water flow impact force acting on the valve core.

[0036] Initially, the sealing mechanism is in the closed state, the valve core blocks the liquid passage 220, and the baffle plate 107 is located within the liquid passage 220. When it is necessary to fully open the sealing mechanism, the valve core and the baffle plate 107 are moved upwards, so that both the valve core and the baffle plate 107 are disengaged from the valve seat 109. At this time, the liquid passage 220 is fully open, and the sealing mechanism is in the fully open state.

[0037] Water flows from the inlet chamber 210 into the outlet chamber 200 after passing through the liquid channel 220. Since the baffle plate 107 is located closer to the liquid channel 220 than the valve core, the water flowing through the liquid channel 220 directly impacts the baffle plate 107, thereby reducing the impact of the water flow on the valve core.

[0038] When the sealing mechanism needs to be switched to the closed state, the valve core and the baffle plate 107 move downwards. The baffle plate 107 moves downwards to the closed position before the valve core. At this time, the limiting unit restricts the movement of the baffle plate 107 and shares part of the water flow impact with the baffle plate 107, thereby reducing the water flow impact force acting on the valve core, making it easier for the valve core to move downwards, and thus making it easier for the sealing mechanism to switch to the closed state. At the same time, the water flows through the filter hole 1071, which filters impurities in the water flow, preventing particulate matter in the water from adhering to the contact surface between the valve seat 109 and the valve core, affecting its sealing effect.

[0039] When the sealing mechanism changes from the fully open state to the closed state, and the water pressure in the inlet chamber 210 suddenly increases, the regulating unit adjusts the total effective flow area formed by all filter holes 1071 according to the water pressure in the inlet chamber 210, so that it increases accordingly with the increase of water pressure, thereby timely adjusting the pressure difference in the outlet chamber 200, maintaining the pressure difference between the inlet chamber 210 and the outlet chamber 200 stable, thereby reducing the occurrence of cavitation.

[0040] In this embodiment, a valve cover 103 is fixedly provided on the upper side of the valve body 108. A vertically arranged first installation channel is provided on the valve cover 103, and the inner wall of the first installation channel is threaded.

[0041] The valve core includes a first connecting rod 1062, a sealing disc 106, and a first rubber ring. The first connecting rod 1062 is vertically arranged and rotatably and vertically movable within a first mounting channel, with a threaded connection between the first connecting rod 1062 and the first mounting channel. The sealing disc 106 is fixedly disposed at the lower end of the first connecting rod 1062 and is located within the outlet chamber 200. The first rubber ring is fixedly disposed on the lower side of the sealing disc 106, and is used to abut against the upper side of the valve seat 109, together with the sealing disc 106, to seal the liquid passage 220. The first connecting rod 1062 and the first rubber ring are both coaxially arranged with the liquid passage 220.

[0042] Rotating the first connecting rod 1062 causes it to move vertically as it rotates, due to the threaded engagement between the first connecting rod 1062 and the first mounting channel.

[0043] In this embodiment, a second mounting channel 300 is provided on the sealing disc 106, and the second mounting channel 300 and the first connecting rod 1062 are coaxially arranged. A first stop is fixedly provided at the lower end of the second mounting channel 300. A second connecting rod 310 is fixedly provided on the blocking disc 107, and the second connecting rod 310 is slidably disposed within the second mounting channel 300. A second stop is fixedly provided at the upper end of the second connecting rod 310. The lower side of the second stop is used to abut against the first stop.

[0044] When the lower side of the second stop block abuts against the first stop block, the first connecting rod 1062 moves upward, causing the second connecting rod 310 to move upward synchronously.

[0045] In this embodiment, at least one horizontally arranged first limiting groove is provided within the second mounting channel 300. The adjustment assembly further includes at least one blocking unit, which includes a first spring 1063 and a first slider 1061. The first slider 1061 is horizontally slidably disposed within the first limiting groove. The first spring 1063 connects the first slider 1061 and the groove wall of the first limiting groove.

[0046] The first slider 1061 has a first inclined surface and a second inclined surface with opposite inclination directions at one end near the second connecting rod 310. The first inclined surface is located above the second inclined surface. Along the vertical direction, the first and second inclined surfaces gradually bulge from both ends of the first slider 1061 toward the middle, so that the end of the first slider 1061 near the second connecting rod 310 forms a wedge-shaped structure.

[0047] When the lower side of the second stop block abuts against the first stop block, the second inclined surface abuts against the upper side of the second stop block. At this time, the blocking disc 107 and the valve core move up and down synchronously. The first spring 1063 is used to resist the resistance of the water flow, so that the blocking disc 107 and the valve core can move down synchronously.

[0048] In this embodiment, a retaining ring 1092 is fixedly disposed within the liquid channel 220, and the retaining ring 1092 and the liquid channel 220 are coaxially arranged. At least one horizontally arranged second limiting groove is formed within the liquid channel 220, and the second limiting groove is located above the retaining ring 1092. There is at least one limiting unit. The limiting unit includes a second spring 1093 and a second slider 1091, the second slider 1091 being horizontally slidably disposed within the second limiting groove. The second spring 1093 connects the second slider 1091 to the groove wall of the second limiting groove.

[0049] The second slider 1091 is used to abut against the blocking disk 107. The side of the second slider 1091 near the blocking disk 107 has a third inclined surface and a fourth inclined surface with opposite inclination directions, and the third inclined surface is above the fourth inclined surface. Along the vertical direction, the third and fourth inclined surfaces gradually bulge from both ends of the second slider 1091 toward the middle, so that the side of the second slider 1091 near the blocking disk 107 forms a wedge-shaped structure.

[0050] When the lower side of the blocking disc 107 abuts against the retaining ring 1092, the upper side of the blocking disc 107 abuts against the fourth inclined surface, and the second slider 1091 is used to limit the blocking disc 107. Part of the impact force of the water flow in the liquid channel 220 is borne by the blocking disc 107 and the second slider 1091, thereby reducing the resistance of the water flow to the valve core.

[0051] In this embodiment, the multiple through-hole assembly is divided into multiple first through-hole units and multiple second through-hole units. The number of filter holes 1071 in the first through-hole unit is greater than the number of filter holes 1071 in the second through-hole unit.

[0052] The upper surface of the blocking disk 107 has multiple first mounting slots and multiple second mounting slots. The multiple first mounting slots are sequentially distributed along the circumference of the blocking disk 107, and the multiple second mounting slots are sequentially distributed along the circumference of the blocking disk 107, with each first mounting slot located between two second mounting slots. Each first through-hole unit is located within a first mounting slot. Each second through-hole unit is located within a second mounting slot.

[0053] The regulating unit includes an regulating disk 1072, which is coaxially arranged with a blocking disk 107. The regulating disk 1072 is rotatably mounted on the blocking disk 107. The regulating disk 1072 has multiple first openings 320 and multiple second openings 330. The flow area of ​​the first openings 320 is larger than the flow area of ​​the second openings 330.

[0054] When the first opening 320 is aligned with the first mounting groove (containing the first through-hole unit), its opening area is sufficient to completely expose the filter hole 1071 in the first mounting groove. When the second opening 330 is aligned with the second mounting groove (containing the second through-hole unit), its opening area is sufficient to completely expose the filter hole 1071 in the second mounting groove.

[0055] The adjustment unit has a first state and a second state. In the first state, each first opening 320 corresponds to a second mounting groove (second through-hole unit), and each second opening 330 corresponds to a first mounting groove (first through-hole unit). In this state, some filter holes 1071 within the first through-hole unit are blocked by the second opening 330, while the filter holes 1071 within the second through-hole unit are completely exposed. In the second state, each first opening 320 corresponds to a first mounting groove (first through-hole unit), and each second opening 330 corresponds to a second mounting groove (second through-hole unit). In this state, all filter holes 1071 are completely exposed. When the adjustment disc 1072 rotates clockwise, the adjustment unit transitions from the first state to the second state. The through-hole area is smallest in the first state and largest in the second state.

[0056] In this embodiment, at least one arc groove 230 is formed on the adjusting disk 1072. The arc groove 230 and the adjusting disk 1072 are coaxially arranged. The two side walls of the arc groove 230 along the circumference of the adjusting disk 1072 are respectively the first side and the second side. Along the direction of forward rotation of the adjusting disk 1072, the second side is in front of the first side.

[0057] At least one adjusting block 231 is fixedly disposed on the lower side of the blocking plate 107, and the adjusting block 231 is slidably disposed within the arc groove 230. The adjusting block 231 has a first flow channel 232 and a second flow channel. The first flow channel 232 is arranged radially along the blocking plate 107, and the second flow channel is arranged circumferentially along the blocking plate 107. One end of the second flow channel near the second side of the arc groove 230 communicates with the first flow channel 232, and the other end of the second flow channel near the first side of the arc groove 230 communicates with the arc groove 230.

[0058] At least one connecting channel 110 is provided in the liquid channel 220. Both ends of the connecting channel 110 are connected to the liquid channel 220, and one end of the connecting channel 110 is above the other end. When the baffle plate 107 and the baffle ring 1092 abut against each other, the upper end of the connecting channel 110 is connected to the first flow channel 232.

[0059] When the regulating unit is in the first state, the regulating block 231 and the first side of the arc groove 230 abut against each other. Liquid in the water inlet chamber 210 can enter the first flow channel 232 through the connecting channel 110 and flow out from the second flow channel, generating an impact force on the first side of the arc groove 230. When the regulating unit is in the second state, the regulating block 231 and the second side of the arc groove 230 abut against each other.

[0060] In this embodiment, a torsion spring 1073 is provided between the adjusting plate 1072 and the blocking plate 107. When the liquid flowing out of the second channel exerts a force on the adjusting plate 1072 and is sufficient to overcome the torsion of the torsion spring 1073, the adjusting plate 1072 rotates relative to the blocking plate 107.

[0061] In this embodiment, a handwheel 101 is fixedly provided at the upper end of the first connecting rod 1062.

[0062] In this embodiment, the anti-clogging drainage flow control valve further includes a sealing mechanism, which includes a compression block 102 and a plurality of second sealing rings 104. The second sealing rings 104 are disposed within a first mounting channel, coaxially arranged with the first connecting rod 1062, and located on the outer side of the first connecting rod 1062. The plurality of second sealing rings 104 are sequentially distributed along the vertical direction to seal the gap between the first connecting rod 1062 and the first mounting channel. The compression block 102 is fixedly connected to the valve cover 103 and abuts against the uppermost second sealing ring 104 to axially press the plurality of second sealing rings 104 together.

[0063] Specifically, at least one fixing rod is fixedly installed on the valve cover 103. The fixing rod is vertically positioned and has threads. At least one sliding groove is provided on the extrusion block 102. The fixing rod is slidably positioned within the sliding groove. After the extrusion block 102 moves to the target position, the extrusion block 102 and the valve cover 103 are fixedly connected by the threaded engagement of the nut and the fixing rod.

[0064] Working process: In the initial state, the regulating unit is in the first state. For example... Figure 4 As shown, the sealing disc 106 and valve seat 109 abut against each other, thereby blocking the upper side of the liquid passage 220. The first slider 1061 abuts against the second connecting rod 310. The lower side of the blocking disc 107 abuts against the retaining ring 1092, and the upper side of the blocking disc 107 abuts against the fourth inclined surface. At this time, the sealing mechanism is in the closed state.

[0065] When the sealing mechanism needs to be fully open, turn the handwheel 101 to drive the first connecting rod 1062 to rotate. Since the first connecting rod 1062 and the first mounting channel are threaded together, the first connecting rod 1062 moves upward while rotating.

[0066] The first connecting rod 1062 drives the sealing disc 106 to move upward, causing the sealing disc 106 to disengage from the valve seat 109. At this time, the first connecting rod 1062 moves relative to the second connecting rod 310. Then, the first connecting rod 1062 continues to move upward until the lower side of the second stop block abuts against the first stop block, and simultaneously the second inclined surface abuts against the upper side of the second stop block. At this time, the first connecting rod 1062 moves upward, overcoming the elastic force of the second spring 1093, and drives the second connecting rod 310 to move upward synchronously until the blocking disc 107 is completely disengaged from the liquid channel 220. At this time, the liquid channel 220 is fully open, and the sealing mechanism is in the fully open state.

[0067] Liquid enters the inlet chamber 210 through the inlet 111, passes through the liquid channel 220, and enters the outlet chamber 200, finally being discharged outwards through the outlet 112. Since the baffle plate 107 is located closer to the liquid channel 220 than the sealing plate 106, the water flowing through the liquid channel 220 directly impacts the baffle plate 107, thereby reducing the impact of the water flow on the first sealing ring, thus reducing wear on the first sealing ring and extending its service life.

[0068] When the sealing mechanism needs to be switched to the closed state, turn the handwheel 101 to move the first connecting rod 1062 downward. The first connecting rod 1062 drives the second connecting rod 310 to move downward simultaneously. The blocking plate 107 moves downward until it passes the second slider 1091 and abuts against the retaining ring 1092. At this time, the fourth inclined surface of the second slider 1091 abuts against the upper side of the blocking plate 107, and the retaining ring 1092 abuts against the lower side of the blocking plate 107. The liquid in the liquid channel 220 passes through the filter hole 1071, so the blocking plate 107 reduces the flow area of ​​the liquid channel 220. Part of the impact force of the water flow is borne by the blocking plate 107 and the second slider 1091, thereby reducing the resistance of the water flow to the valve core. The valve core moves downward more easily, making it easier for the sealing mechanism to switch to the closed state. Meanwhile, water flows through the filter hole 1071, which filters impurities in the water to prevent particulate matter in the water from adhering to the contact surface between the valve seat 109 and the first sealing ring, thus affecting its sealing effect.

[0069] When the lower side of the blocking disc 107 abuts against the retaining ring 1092, the liquid in the connecting channel 110 enters the second channel through the first flow channel 232, and then flows outward from the second flow channel, impacting the first side of the arc groove 230. Under the action of the torsion spring 1073, the adjusting disc 1072 and the blocking disc 107 remain relatively stationary.

[0070] During the downward movement of the valve core, if the amount of liquid in the inlet chamber 210 suddenly increases, the water pressure in the inlet chamber 210 will suddenly increase, resulting in an increased amount of liquid flowing through the connecting channel 110. When the impact force of the liquid in the connecting channel 110 on the arc groove 230 exceeds the torque of the torsion spring 1073, the adjusting disc 1072 rotates in the forward direction. The adjusting block 231 gradually moves closer to the second side of the arc groove 230. The adjusting unit gradually transitions from the first state to the second state.

[0071] When the adjustment unit is in the first state, some of the filter holes 1071 in the first through-hole unit are blocked, and the flow area of ​​the blocking disk 107 is minimized. When the adjustment unit is in the second state, each first opening 320 corresponds to a first mounting slot, and each second opening 330 corresponds to a second mounting slot. All filter holes 1071 are opened, and the flow area of ​​the blocking disk 107 is maximized.

[0072] When the regulating unit transitions from the first state to the second state, the flow area of ​​the baffle plate 107 gradually increases. The higher the water pressure in the inlet chamber 210, the more the regulating plate 1072 rotates. The flow area of ​​the baffle plate 107 also increases, thus timely adjusting the pressure difference in the outlet chamber 200, maintaining a stable pressure difference between the inlet chamber 210 and the outlet chamber 200, and reducing cavitation.

[0073] Finally, the first connecting rod 1062 continues to move downward until the sealing disc 106 and the valve seat 109 abut against each other, thereby switching the sealing mechanism to the closed state.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clog-resistant drainage flow control valve, characterized in that: It includes a valve body and a sealing mechanism; the valve body is provided with a valve seat, which divides the internal space of the valve body into an outlet chamber and an inlet chamber distributed vertically; the valve seat has a liquid channel that runs through its upper and lower surfaces. The sealing mechanism includes a sealing component and an adjusting component. The sealing component includes a valve core, which is slidably disposed within the outlet chamber and serves to abut against the valve seat, thus sealing the liquid passage. The adjusting component includes a baffle plate, a limiting unit, and an adjusting unit. The baffle plate is slidably disposed within the outlet chamber or the liquid passage and is located below the valve core. The baffle plate has multiple through-hole components, each including multiple filter holes. The adjusting unit adjusts the total effective flow area formed by all the filter holes according to the water pressure in the inlet chamber, so that the total effective flow area increases with the increase of the water pressure in the inlet chamber. The blocking mechanism has a fully open state and a closed state. In the fully open state, both the blocking disc and the valve core are out of contact with the valve seat. In the closed state, the valve core blocks the liquid passage, and the blocking disc is inside the liquid passage. When the blocking disc and the valve core move downward, the blocking mechanism changes from the fully open state to the closed state, with the blocking disc moving downward to the closed position before the valve core. The limiting unit restricts the movement of the blocking disc and shares part of the water flow impact with the blocking disc to reduce the water flow impact force acting on the valve core.

2. The anti-clogging drainage flow control valve according to claim 1, characterized in that: A valve cover is fixedly installed on the upper side of the valve body, and a vertically arranged first installation channel is opened on the valve cover; The valve core includes a first connecting rod, a sealing disc, and a first rubber ring; the first connecting rod is vertically arranged and is rotatably and vertically movable within a first mounting channel, with the first connecting rod and the first mounting channel threaded together; the sealing disc is fixedly arranged at the lower end of the first connecting rod; the first rubber ring is fixedly arranged on the lower side of the sealing disc, and the first rubber ring is used to abut against the upper side of the valve seat, and together with the sealing disc, seals the liquid passage.

3. The anti-clogging drainage flow control valve according to claim 2, characterized in that: The sealing plate has a second installation channel, which is coaxially arranged with the first connecting rod; a first stop is fixedly installed at the lower end of the second installation channel; a second connecting rod is fixedly installed on the blocking plate, and the second connecting rod is slidably arranged in the second installation channel; a second stop is fixedly installed at the upper end of the second connecting rod; the lower side of the second stop is used to abut against the first stop.

4. The anti-clogging drainage flow control valve according to claim 3, characterized in that: The second installation channel is provided with at least one horizontally set first limiting groove; the adjustment assembly also includes at least one blocking unit, the blocking unit including a first spring and a first slider; the first slider is horizontally slidably set in the first limiting groove; the first spring connects the first slider and the groove wall of the first limiting groove; The first slider has a first inclined surface and a second inclined surface with opposite inclination directions at one end near the second connecting rod; the first inclined surface is located above the second inclined surface; when the lower side of the second stop block abuts against the first stop block, the second inclined surface and the upper side of the second stop block abut against each other, at which time the blocking disc and the valve core move up and down synchronously.

5. The anti-clogging drainage flow control valve according to claim 1, characterized in that: A retaining ring is fixedly installed inside the liquid channel, and the retaining ring and the liquid channel are coaxially arranged; at least one horizontally arranged second limiting groove is opened inside the liquid channel, and the second limiting groove is located above the retaining ring; the limiting unit includes a second spring and a second slider, and the second slider is horizontally slidably arranged in the second limiting groove; the second spring connects the second slider and the groove wall of the second limiting groove. The second slider is used to abut against the blocking plate. The side of the second slider near the blocking plate has a third inclined surface and a fourth inclined surface with opposite inclination directions. The third inclined surface is above the fourth inclined surface. When the lower side of the blocking plate abuts against the retaining ring, the upper side of the blocking plate abuts against the fourth inclined surface. The second slider is used to limit the blocking plate.

6. The anti-clogging drainage flow control valve according to claim 5, characterized in that: The multiple through-hole assembly is divided into multiple first through-hole units and multiple second through-hole units; the number of filter holes in the first through-hole unit is greater than the number of filter holes in the second through-hole unit. The regulating unit includes an regulating disk and a blocking disk arranged coaxially, with the regulating disk rotatably mounted on the blocking disk; the regulating disk has multiple first openings and multiple second openings; the flow area of ​​the first opening is larger than the flow area of ​​the second opening. The adjustment unit has a first state and a second state. In the first state, each first opening corresponds to a second through hole unit, and each second opening corresponds to a first through hole unit. In the second state, each first opening corresponds to a first through hole unit, and each second opening corresponds to a second through hole unit. When the adjustment disc rotates in the forward direction, the adjustment unit changes from the first state to the second state.

7. The anti-clogging drainage flow control valve according to claim 6, characterized in that: The adjusting plate has at least one arc groove, and the two side walls of the arc groove along the circumference of the adjusting plate are respectively the first side and the second side; along the direction of forward rotation of the adjusting plate, the second side is in front of the first side; At least one adjusting block is fixedly provided on the lower side of the blocking plate, and the adjusting block is slidably disposed in the arc groove; a first flow channel and a second flow channel are provided on the adjusting block, the first flow channel is arranged along the radial direction of the blocking plate, and the second flow channel is arranged along the circumference of the blocking plate; the end of the second flow channel near the second side of the arc groove is connected to the first flow channel, and the end of the second flow channel near the first side of the arc groove is connected to the arc groove. At least one connecting channel is provided in the liquid channel, and both ends of the connecting channel are connected to the liquid channel, with one end of the connecting channel above the other end; when the baffle plate and the baffle ring abut against each other, the upper end of the connecting channel is connected to the first flow channel; when the adjusting unit is in the first state, the adjusting block abuts against the first side of the arc groove. When the adjustment unit is in the second state, the adjustment block and the second side of the arc groove abut against each other.

8. The anti-clogging drainage flow control valve according to claim 7, characterized in that: A torsion spring is installed between the regulating plate and the blocking plate. When the liquid flowing out of the second channel exerts a force on the regulating plate and is sufficient to overcome the torsion of the torsion spring, the regulating plate rotates relative to the blocking plate.

9. The anti-clogging drainage flow control valve according to claim 2, characterized in that: A handwheel is fixedly installed at the upper end of the first connecting rod.

10. A clog-resistant drainage flow control valve according to claim 2, characterized in that: It also includes a sealing mechanism, which includes a compression block and multiple second sealing rings; the second sealing rings are disposed in the first mounting channel, and the second sealing rings and the first connecting rod are coaxially disposed, and the second sealing rings are disposed on the outside of the first connecting rod; the multiple second sealing rings are distributed sequentially along the vertical direction to seal the gap between the first connecting rod and the first mounting channel; the compression block and the valve cover are fixedly connected and abut against the uppermost second sealing ring.

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