Disclosure of Invention
The invention provides a combined assembly type water valve, which aims to solve the technical problems that the existing water path control valve is complex in structure and is easy to cause water leakage.
The invention provides a combined assembly type water valve, which comprises a valve body, wherein a water inlet joint for connecting fluid into the valve body, a water outlet joint for controlling the fluid entering the valve body and outputting the controlled fluid, and a control installation cavity for installing a control mechanism are arranged on the valve body; the static sheet is covered on the annular sealing gasket and fixed at the bottom of the control installation cavity to realize the sealing connection between the static sheet and the water inlet joint, the moving sheet and the static sheet are in mirror-surface-level close fit connection, and the fluid control from the water inlet joint to the water outlet joint is realized through the rotation of the moving sheet; the movable sheet and the valve cover assembly are connected in a mirror-surface-level close fit manner, the valve cover assembly and the movable sheet are enclosed to form a rod piece mounting cavity, and the valve rod is mounted in the rod piece mounting cavity and is in plug fit with the movable sheet; the valve rod and the moving plate are connected into an integral structure through an interference fit structure.
Furthermore, the interference fit structure comprises an insertion groove and an interference groove which are arranged on the movable plate, a clamping part and an insertion strip which are arranged on the control end of the valve rod, and an interference piece which is clamped and assembled on the clamping part and is assembled in the interference groove in an interference fit manner, wherein the insertion groove is positioned at the bottom of the interference groove; interference piece joint assembly is in the joint portion of valve rod, impresses the control end of valve rod in the interference inslot and makes the grafting strip get into the inserting groove, and the joint portion of valve rod and the common interference of the interference in the joint portion are pegged graft at the interference inslot simultaneously, and then make valve rod, interference and movable plate connect and be overall structure.
Further, the width of the clamping part is smaller than that of the inserting strip so as to form a T-shaped structure convenient for clamping of the interference piece, and/or the thickness of the clamping part is smaller than that of the inserting strip so as to form a T-shaped structure convenient for clamping of the interference piece; or the clamping part is provided with at least one of a clamping groove, a clamping hole and a mortise which are convenient for the interference piece to be clamped and matched.
Further, the shape of the interference piece is the same as that of the interference groove, and the radial dimension of the interference piece is larger than that of the interference groove; or the periphery of the interference piece is provided with an interference bulge structure distributed along the axial direction and/or the circumferential direction; or the periphery of the interference piece is provided with an interference bulge structure which is spirally arranged.
Furthermore, the interference piece is formed by oppositely buckling two half unit pieces, and a connecting piece connected in a buckling manner is arranged between the two half unit pieces; the half unit piece is provided with at least one of an avoiding groove, an avoiding hole, a positioning strip and a positioning block which are matched with the shapes of the clamping part and/or the inserting strip.
The valve cover assembly comprises a cover body and a rotary buffering ring, the cover body extends into a control installation cavity of the valve body and is in threaded connection with the valve body, an assembly hole for assembling the valve rod is formed in the middle of the cover body, a buffering groove hole for accommodating the rotary buffering ring is formed in the extending end of the cover body, and the buffering groove hole and the assembly hole are arranged coaxially; one end of the rotary buffering ring is in close fit connection with the surface of the moving plate in a mirror surface level mode, the other end of the rotary buffering ring is tightly pressed on the groove bottom surface of the buffering groove hole through the annular sealing gasket, or the two ends of the rotary buffering ring are respectively in close fit connection with the groove bottom surface of the buffering groove hole and the moving plate in a mirror surface level mode.
Furthermore, the bottom of the control installation cavity is provided with an assembly groove for nesting the annular sealing gasket, the shape of the assembly groove is matched with the shape of the annular sealing gasket, a through hole which is communicated up and down is formed in a middle shaft of the assembly groove and the annular sealing gasket, the first end of the through hole is communicated with a water inlet of the stator, and the second end of the through hole is communicated with a water inlet connector; the radial width of the annular sealing gasket is greater than the axial thickness.
Further, the radial width dimension of the annular sealing gasket is greater than or equal to twice the axial thickness dimension.
Further, the surface of at least one end of annular seal gasket is equipped with a plurality of concentric bulge loops, and the radial dimension of a plurality of concentric bulge loops is bigger and is the interval and arranges.
Furthermore, a sealing ring is arranged at a connecting corner part between the valve cover assembly and the valve body, and/or a plurality of groups of sealing rings which are distributed at intervals along the axial direction are arranged between the valve rod and the valve cover assembly.
The invention has the following beneficial effects:
the combined assembled water valve of the invention has the advantages that the movable plate, the static plate and the annular sealing gasket are all positioned in the control installation cavity of the valve body, the movable plate, the static plate and the annular sealing gasket are orderly pressed from the opening position of the control installation cavity to the bottom of the control installation cavity while being screwed and assembled at the opening position of the control installation cavity of the valve body by means of the valve cover component, and then the close fit among the movable plate, the static plate and the annular sealing gasket is realized, and the sealing purpose is achieved, namely: an annular sealing gasket is clamped between the static sheet and the bottom of the control installation cavity so as to realize sealing between the static sheet and the valve body, the static sheet and the moving sheet are in close fit, and are in close fit with each other by utilizing the mirror surface level close fit, and the moving sheet and the valve cover component are in close fit, and are in close fit with each other by utilizing the mirror surface level close fit, so as to realize sealing between the moving sheet and the valve cover component; the valve rod is positioned in a rod piece mounting cavity formed by the valve cover assembly and the moving piece in a surrounding mode and is positioned in a completely water-free cavity, water entering the inner cavity of the valve body can be effectively prevented from leaking from the position of the valve rod, the leakage of the only movable fit sealing position in the combined assembly type water valve, namely the valve rod, is completely eradicated, other positions are static fit sealing positions, the leakage phenomenon is hardly generated, the leakage problem caused by long-time use of the combined assembly type water valve is further solved, and the service life of the combined assembly type water valve is prolonged. In addition, the valve rod and the movable piece are connected into an integral structure through an interference fit structure, when the combined assembly type water valve is assembled, the combined assembly of the whole combined assembly type water valve can be completed only by sequentially placing the annular sealing gasket, the static piece, the combined piece of the valve rod and the movable piece and screwing the valve cover component, the number of scattered pieces in the control installation cavity is reduced, the whole assembly process is simplified, the combined assembly is convenient, the assembly cost and the assembly time are reduced, and the mechanized rapid assembly production is favorably realized. The water valve can be suitable for single-cold water taps, cold and hot water mixing taps, water purification taps, angle valves, water ball valves, water gate valves and other waterway control valves.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a modular fitting water valve in accordance with a preferred embodiment of the present invention; FIG. 2 is a schematic illustration of the construction of a valve stem having a control end with a T-shaped configuration in the width direction in accordance with a preferred embodiment of the present invention; FIG. 3 is a schematic illustration of the construction of a valve stem having a control end with a T-shaped configuration in the thickness direction according to a preferred embodiment of the present invention; FIG. 4 is a schematic illustration of an interference fit with the valve stem of FIG. 2; FIG. 5 is a schematic illustration of an interference fit with the valve stem of FIG. 3; FIG. 6 is a schematic structural view of a rotor according to a preferred embodiment of the present invention; FIG. 7 is a schematic diagram of the structure of a cushion ring of the preferred embodiment of the present invention; FIG. 8 is a schematic top view of the control mounting cavity of the valve body of the preferred embodiment of the present invention; FIG. 9 is a schematic structural view of an annular sealing gasket of the preferred embodiment of the invention; fig. 10 is a schematic illustration of the construction of a valve stem having a control end in a recessed configuration in accordance with a preferred embodiment of the present invention.
As shown in fig. 1, the combined assembly type water valve of the embodiment includes a valve body 1, a water inlet connector 101 for connecting fluid into the valve body 1, a water outlet connector 102 for controlling the fluid entering the valve body 1 and then outputting the fluid, and a control installation cavity 103 for installing a control mechanism are arranged on the valve body 1, the control mechanism includes a valve cover assembly 2, a moving plate 3, a static plate 4, an annular sealing gasket 5 and a valve rod 6, the valve cover assembly 2 is hermetically connected to an installation opening of the control installation cavity 103, and the moving plate 3, the static plate 4 and the annular sealing gasket 5 are sequentially pressed in the control installation cavity 103 through the valve cover assembly 2; the stator 4 is pressed on the annular sealing gasket 5 and fixed at the bottom of the control installation cavity 103 to realize the sealing connection of the stator 4 and the water inlet connector 101, the rotor 3 and the stator 4 are in mirror-surface-level close fit connection, and the fluid control from the water inlet connector 101 to the water outlet connector 102 is realized through the rotation of the rotor 3; the movable plate 3 and the valve cover assembly 2 are connected in a mirror-surface-level close fit manner, the valve cover assembly 2 and the movable plate 3 enclose to form a rod piece mounting cavity, and the valve rod 6 is mounted in the rod piece mounting cavity and is in inserted fit with the movable plate 3; the valve rod 6 and the moving plate 3 are connected into an integral structure through an interference fit structure. According to the combined assembly type water valve, the movable plate 3, the fixed plate 4 and the annular sealing gasket 5 are all positioned in the control installation cavity 103 of the valve body 1, the movable plate 3, the fixed plate 4 and the annular sealing gasket 5 are sequentially pressed from the opening position of the control installation cavity 103 to the bottom of the control installation cavity 103 while being screwed and assembled at the opening position of the control installation cavity 103 of the valve body 1 by the aid of the valve cover assembly 2, so that the close fit between the movable plate 3, the fixed plate 4 and the annular sealing gasket 5 is realized, and the purpose of sealing is achieved, namely: an annular sealing gasket 5 is clamped between the stator 4 and the bottom of the control installation cavity 103 so as to realize the sealing between the stator 4 and the valve body 1, the stator 4 and the rotor 3 are in close fit and utilize the mirror surface level close fit between each other so as to realize the sealing between each other, and the rotor 3 and the valve cover component 2 are in close fit and utilize the mirror surface level close fit between each other so as to realize the sealing between each other; the valve rod 6 is located in a rod mounting cavity formed by the valve cover assembly 2 and the movable piece 3 in a surrounding mode and is located in a completely water-free cavity, water entering the inner cavity of the valve body 1 can be effectively prevented from leaking from the position of the valve rod 6, the leakage of the only movable fit sealing position in the combined assembly type water valve of the valve rod 6 is completely avoided, other positions are static fit sealing positions, the leakage phenomenon can hardly occur, the leakage problem caused by long-time use of the combined assembly type water valve is solved, and the service life of the combined assembly type water valve is prolonged. In addition, the valve rod 6 and the movable plate 3 are connected into an integral structure through an interference fit structure, when the combined assembly type water valve is assembled, the combined assembly of the whole combined assembly type water valve can be completed only by sequentially placing the annular sealing gasket 5, the static plate 4, the combined piece of the valve rod 6 and the movable plate 3 and screwing the valve cover component 2, the number of parts which are arranged in the control installation cavity 103 is reduced, the whole assembly process is simplified, the combined assembly is convenient, the assembly cost and the assembly time are reduced, and the mechanized rapid assembly production is facilitated. The combined assembly type water valve has the characteristics of water resistance, explosion resistance, long service cycle and the like. The water valve can be suitable for single-cold water taps, cold and hot water mixing taps, water purification taps, angle valves, water ball valves, water gate valves and other waterway control valves. Optionally, the valve body 1 is formed using a cold heading process. Optionally, at least one of the valve body 1, the bonnet assembly 2, and the valve stem 6 is a ceramic piece. Optionally, the moving plate 3 and the stationary plate 4 are ceramic pieces. Optionally, the annular sealing gasket 5 is made of an edible silica gel material.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, in this embodiment, the interference fit structure includes a plug-in groove 301 and an interference groove 302 opened on the rotor 3, a clamping portion 601 and a plug-in strip 602 provided at the control end of the valve rod 6, and an interference piece 7 clamped on the clamping portion 601 and interference fit in the interference groove 302, where the plug-in groove 301 is located at the bottom of the interference groove 302. Interference 7 joint assembly is on the joint portion 601 of valve rod 6, presses the control end of valve rod 6 into interference groove 302 and makes grafting strip 602 get into inserting groove 301 in, and the joint portion 601 of valve rod 6 and the common interference of interference 7 on the joint portion 601 are pegged graft in interference groove 302 simultaneously, and then make valve rod 6, interference 7 and rotor 3 connect as overall structure. As shown in fig. 2, the control end of the valve rod 6 is connected with a flat clamping portion 601, then the end of the clamping portion 601 is connected with an inserting strip 602 whose width is larger than that of the clamping portion 601 and whose two ends exceed the clamping portion 601 to form an overhang, the clamping portion 601 and the inserting strip 602 are combined to form a combined structure which is in a T-shaped structure along the width direction, the interference piece 7 is clamped at the corner of the T-shaped structure to limit the circumferential motion and circumferential motion of the interference piece 7 relative to the T-shaped structure, the clamped interference piece 7, the clamping portion 601 and the inserting strip 602 are jointly inserted into the interference groove 302 of the rotor 3, the inserting bar 602 is inserted into the inserting groove 301 for fixing, and the interference piece 7 and the clamping part 601 are assembled in the interference groove 302 in an interference manner, make valve rod 6, interference piece 7 and rotor 3 combination constitute the whole piece, and then can pack into valve body 1 with holistic form to reduce the assembly degree of difficulty. As shown in fig. 3, the control end of the valve rod 6 is connected with a flat clamping portion 601, then the end of the clamping portion 601 is connected with an inserting strip 602 whose thickness is larger than the clamping portion 601 and whose two sides exceed the clamping portion 601 to form an overhang, the clamping portion 601 and the inserting strip 602 are combined to form a combined structure which is in a T-shaped structure along the thickness direction, the interference piece 7 is clamped at the corner of the T-shaped structure to limit the circumferential motion and circumferential motion of the interference piece 7 relative to the T-shaped structure, the clamped interference piece 7, the clamping portion 601 and the inserting strip 602 are jointly inserted into the interference groove 302 of the rotor 3, the inserting bar 602 is inserted into the inserting groove 301 for fixing, and the interference piece 7 and the clamping part 601 are assembled in the interference groove 302 in an interference manner, make valve rod 6, interference piece 7 and rotor 3 combination constitute the whole piece, and then can pack into valve body 1 with holistic form to reduce the assembly degree of difficulty. Alternatively, the interference member 7 is made of a plastic material, and is interference-fitted into the interference groove 302 by plastic deformation of the interference member 7. Because there is thermal deformation in the pottery manufacturing process, therefore probably lead to making the ceramic member of shaping to have the problem of precision deviation in the assembling process, and the interference piece 7 of making through the plasticity material between valve rod 6 and the rotor 3 assembles, can utilize the plasticity extrusion deformation of interference piece 7, can effectively avoid the problem of precision deviation, and the overall structure stability after the while assembles is better.
Another embodiment is provided relative to the previous embodiment, where bayonet bars 602 are positionally interchanged with interference slots 302. As shown in fig. 1 and 10, the interference fit structure includes a plug strip 602 and an interference groove 302 opened on the rotor 3, a clamping portion 601 and a plug groove 301 provided on the control end of the valve rod 6, and an interference piece 7 clamped on the clamping portion 601 and assembled in the interference groove 302 in an interference fit manner, wherein the plug strip 602 is located at the bottom of the interference groove 302. The interference piece 7 is assembled on the clamping portion 601 of the control end of the valve rod 6 and is assembled in the interference groove 302 of the rotor 3 in an interference insertion manner, the insertion groove 301 of the control end of the valve rod 6 is assembled in the insertion strip 602 in the interference groove 302 of the rotor 3 in an insertion manner, and then the valve rod 6 and the rotor 3 are assembled in an integrated combination manner.
As shown in fig. 1, 2, 3, 4, 5 and 6, in this embodiment, the width of clip portion 601 is smaller than the width of strip 602 to form a T-shaped configuration for facilitating clipping of interference piece 7, and/or the thickness of clip portion 601 is smaller than the thickness of strip 602 to form a T-shaped configuration for facilitating clipping of interference piece 7. Optionally, the clamping portion 601 is provided with at least one of a clamping groove, a clamping hole and a mortise, which are convenient for the interference piece 7 to be clamped and matched. The clamping portion 601 and the inserting strip 602 can be combined and matched in various shapes as required, and are clamped and connected with the interference piece 7 by using the structure structures such as grooves, holes, blocks and strips formed among the clamping portions and the inserting strip 602, so that combined assembly is realized.
As shown in fig. 1, 4, 5 and 6, in the present embodiment, the external shape of the interference piece 7 is the same as that of the interference groove 302, and the radial dimension of the interference piece 7 is larger than that of the interference groove 302. The radial dimension of the interference piece 7 is larger than that of the interference groove 302, and the interference fit connection assembly of the valve rod 6, the interference piece 7 and the moving plate 3 is realized by plastic deformation generated when the interference piece 7 is pressed into the interference groove 302 and the combination of the internal support effect of the valve rod 6 in the interference piece 7. Optionally, the inner hole and/or the periphery of the interference piece 7 are/is provided with a conical surface, so that automatic centering and positioning during assembly are facilitated, interference assembly can be accurately achieved, and the interference piece 7 is prevented from being crushed. Optionally, the outer circumference of the interference piece 7 is provided with an interference protrusion configuration arranged in the axial direction and/or the circumferential direction. Optionally, the periphery of the interference piece 7 is provided with an interference protrusion structure arranged in a spiral shape. According to the requirement, the radial dimension of the interference piece 7 is designed to be the same as that of the interference groove 302, various interference protrusion structures are arranged on the periphery of the interference piece 7, the maximum outer diameter of the interference piece 7 is larger than that of the interference groove 302, the interference protrusion structures are plastically deformed and pressed into the interference groove 302 when the interference piece 7 is pressed into the interference groove 302, and the internal supporting function of the valve rod 6 in the interference piece 7 is combined, so that the interference fit connection assembly of the valve rod 6, the interference piece 7 and the rotor plate 3 is realized. Alternatively, the interference protrusion structure may adopt at least one of a boss, a raised line, a bump, a salient point and a pitted surface.
As shown in fig. 4 and 5, in the present embodiment, the interference piece 7 is formed by two half unit pieces 701 which are oppositely buckled, and a connecting piece 702 which is connected and buckled is arranged between the two half unit pieces 701. The half unit piece 701 is provided with at least one of an avoiding groove, an avoiding hole, a positioning strip and a positioning block which are matched with the shapes of the clamping part 601 and/or the inserting strip 602. As shown in fig. 4 and 5, the connecting members 702 are plug-in members, which are engaged with each other by being engaged with each other; the half unit piece 701 is provided with an avoiding groove which is radially inserted into the clamping part 601 and clamped between the plug-in strip 602 and the valve rod 6, a positioning strip and/or a positioning block which is attached and coated outside the plug-in strip 602 from one or more of the bottom, the end part and the side part is formed around the avoiding groove, or a positioning strip and/or a positioning block which is clamped between the clamping part 601 and the rod body of the valve rod 6 is formed around the avoiding groove.
As shown in fig. 1 and 7, in the present embodiment, the bonnet assembly 2 includes a cover body 201 and a rotating cushion ring 202. The cover body 201 extends into the control installation cavity 103 of the valve body 1 and is in threaded connection with the valve body 1. The middle part of the cover body 201 is provided with an assembling hole 2011 for assembling the valve rod 6, the extending end of the cover body 201 is provided with a buffer slot 2012 for accommodating the rotary buffer ring 202, and the buffer slot 2012 and the assembling hole 2011 are coaxially arranged. Optionally, one end of the rotary buffer ring 202 is connected to the surface of the rotor 3 in a mirror-surface-level close fit, and the other end of the rotary buffer ring 202 is pressed against the bottom surface of the buffer slot 2012 by the annular sealing gasket 5. The cover body 201 is connected with the opening position of the control installation cavity 103 of the valve body 1 through the screw thread, simultaneously the annular sealing gasket 5, the rotary buffering ring 202, the moving plate 3, the stator plate 4 and the annular sealing gasket 5 are pressed in the control installation cavity 103 in sequence, and because one end of the rotary buffering ring 202 is pressed on the groove bottom surface of the buffering groove hole 2012 through the annular sealing gasket 5, and the other end is connected with the moving plate 3 in a mirror-surface-level close fit manner, thereby realizing the press seal among the cover body 201, the annular sealing gasket 5 and the rotary buffering ring 202 and the mirror-surface-level fit moving seal between the rotary buffering ring 202 and the moving plate 3, leading the rod piece installation cavity formed by enclosing the cover body 201, the annular sealing gasket 5, the rotary buffering ring 202 and the moving plate 3 not to be contacted with water completely, and being not easy to leak water and seep water, blocking the water in the inner cavity of the valve, the periphery of the valve rod 6 is prevented from contacting with water, so that the problem of water leakage of the traditional waterway control valve from the position of the valve rod 6 is solved, and the service life of the whole combined assembly type water valve is prolonged. In addition, the compression seal between the cover body 201, the annular sealing gasket 5 and the rotary buffering ring 202 and the mirror surface-level fit dynamic seal between the rotary buffering ring 202 and the dynamic sheet 3 are adopted, so that the explosion-proof grade of the whole combined assembly type water valve can be effectively improved, even if the combined assembly type water valve is exposed to higher water pressure, the explosion of the combined assembly type water valve is not easily caused, and the overall stability is better. Because the cover body 201, the annular sealing gasket 5, the compression seal between the rotary buffering rings 202 and the mirror surface-level fit dynamic seal between the rotary buffering rings 202 and the moving plate 3, when the valve rod 6 controls the moving plate 3 to rotate, the moving plate 3 is in mirror surface-level close fit connection with the rotary buffering rings 202 and is not in direct association contact with the cover body 201, so that an acting force is not easy to generate on the cover body 201 in the rotation control process, and meanwhile, the cover body 201 is not easy to generate a rotation blocking force on the moving plate 3, so that the valve rod 6 has less rotation blocking force and the rotation control is easier to realize; the rotation damper ring 202 functions as a damper force between the rotor 3 and the cover 201. Optionally, mirror surface seamless combination (mirror surface level fit dynamic seal) is adopted among the three ceramic pieces of the stator 4, the rotor 3 and the rotary buffer ring 202, so that any possibility that an O-shaped sealing ring (sealing ring 9) on the valve rod 6 and the valve rod 6 is contacted with water is avoided, and the industrial difficulty that the O-shaped sealing ring (sealing ring 9) and an assembly hole 2011 of the cover body 201 are abraded during working to further cause water leakage is solved.
Optionally, two ends of the rotary buffer ring 202 are respectively connected with the groove bottom surface of the buffer groove hole 2012 and the moving plate 3 by adopting mirror-surface-level close fit. The cover body 201 is connected with the opening position of the control installation cavity 103 of the valve body 1 through screw threads, and simultaneously presses the rotary buffer ring 202, the movable plate 3, the static plate 4 and the annular sealing gasket 5 in the control installation cavity 103 in sequence, and because the two ends of the rotary buffer ring 202 are respectively connected with the groove bottom surface of the buffer groove hole 2012 and the moving plate 3 in a mirror-surface-level close fit manner, thereby realizing mirror-surface-level bonding dynamic sealing among the cover body 201, the rotary buffer ring 202 and the moving plate 3, so that the rod member installation cavity formed by the enclosing of the cover body 201, the rotary buffer ring 202 and the moving plate 3 can not contact with water at all, and is not easy to leak water and seep water, the water in the inner cavity of the valve body 1 is blocked outside the rod piece installation cavity for arranging the valve rod 6, the periphery of the valve rod 6 is prevented from contacting with the water, and then solve the problem that traditional water route control valve leaked from valve stem 6 position, improve the life of whole combination assembled water valve. In addition, the mirror surface-level fit dynamic seal among the cover body 201, the rotary buffer ring 202 and the moving plate 3 is adopted, so that the explosion-proof grade of the whole combined assembly type water valve can be effectively improved, even if the combined assembly type water valve is faced with higher water pressure, the explosion of the combined assembly type water valve is not easily caused, and the overall stability is better. Because the cover body 201, the rotary buffering ring 202 and the rotor plate 3 are in mirror-surface-level close fit connection, when the valve rod 6 controls the rotor plate 3 to rotate, the rotor plate 3 is in mirror-surface-level close fit connection with the rotary buffering ring 202 and is not in direct associated contact with the cover body 201, acting force is not easy to generate on the cover body 201 in the rotation control process, meanwhile, the cover body 201 is not easy to generate rotation blocking force on the rotor plate 3, so that the valve rod 6 is less in rotation blocking, and rotation control is easier to realize; the rotation damper ring 202 functions as a damper force between the rotor 3 and the cover 201.
As shown in fig. 1, 8 and 9, in the present embodiment, the bottom of the control installation cavity 103 is provided with a fitting groove 1031 for nesting the annular sealing gasket 5. The fitting groove 1031 is shaped to match the outer shape of the annular sealing gasket 5. The central shaft of the assembling groove 1031 and the annular sealing gasket 5 is provided with a through flow hole 8, the first end of the flow hole 8 is communicated to the water inlet of the static sheet 4, and the second end of the flow hole 8 is communicated to the water inlet joint 101. The annular sealing gasket 5 has a radial width greater than the axial thickness. The annular sealing gasket 5 has an axial thickness greater than the groove depth of the fitting groove 1031. Optionally, the annular sealing gasket 5 is made of food grade silicone rubber material. Compared with the traditional silica gel ring sealing mode, the annular sealing gasket 5 is arranged at the bottom of the control installation cavity 103 in a sheet structure and is pressed in the assembling groove 1031 in a mode that the static sheet 4, the movable sheet 3 and the valve cover assembly 2 are pressed down layer by layer, the traditional loop line sealing is changed into annular surface sealing, the sealing effect is better, the stress area during pressing down is increased, the annular sealing gasket 5 is not easily damaged by pressing when the stress is too large, and the sealing effect is better.
As shown in fig. 1, 8 and 9, in the present embodiment, the radial width dimension of the annular sealing gasket 5 is greater than or equal to twice the axial thickness dimension. Compared with the traditional silica gel ring sealing mode, the annular sealing gasket 5 is arranged at the bottom of the control installation cavity 103 in a sheet structure and is pressed in the assembling groove 1031 in a mode that the static sheet 4, the movable sheet 3 and the valve cover assembly 2 are pressed down layer by layer, the traditional loop line sealing is changed into annular surface sealing, the sealing effect is better, the stress area during pressing down is increased, the annular sealing gasket 5 is not easily damaged by pressing when the stress is too large, and the sealing effect is better.
As shown in fig. 1, 8 and 9, in this embodiment, the surface of at least one end of the annular sealing gasket 5 is provided with a plurality of concentric convex rings 501, and the radial dimension of the plurality of concentric convex rings 501 is increasingly larger and arranged at intervals. Through set up a plurality of concentric bulge loops 501 on the terminal surface of the at least one end at annular seal gasket 5, form a plurality of stagnant water clitells and buffering clitells, can enough play the too big buffering of clamping pressure when assembling, can play the waterproof effect of multilayer seal again, and radial dimension is big can shock resistance explosion-proof for annular seal gasket 5 has that life is longer, sealed effect is better, shock resistance explosion-proof can be good, be difficult for a plurality of characteristics such as harm when the assembly.
As shown in fig. 1, in this embodiment, a sealing ring 9 is disposed at a connection corner portion between the bonnet assembly 2 and the valve body 1, and/or a plurality of groups of sealing rings 9 are disposed between the valve rod 6 and the bonnet assembly 2 at intervals along the axial direction. Optionally, the cover body 201 has a threaded connection portion in threaded connection with the inner wall of the control installation cavity 103 of the valve body 1 and a covering portion in abutting contact with the outer end of the valve body 1, the sealing ring 9 is arranged at a corner position of the threaded connection portion and the covering portion, and when the cover body 201 is in threaded connection with the valve body 1, the sealing ring 9 is extruded through a corner, so that double-layer sealing of the threaded connection and the sealing ring 9 is realized. The outer wall of the valve rod 6 is provided with a plurality of groups of sealing grooves which are used for containing the sealing rings 9, the sealing rings 9 are clamped in the sealing grooves, the valve rod 6 is assembled in the cover body 201 of the valve cover assembly 2 through the plurality of groups of sealing rings 9 which are distributed at intervals along the axial direction, axial limiting and coaxial positioning of the valve rod 6 relative to the cover body 201 are achieved, and meanwhile multilayer sealing of the valve rod 6 and the cover body 201 is formed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.