CN212055943U - High-sealed high-frequency ball valve - Google Patents
High-sealed high-frequency ball valve Download PDFInfo
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- CN212055943U CN212055943U CN202020567030.1U CN202020567030U CN212055943U CN 212055943 U CN212055943 U CN 212055943U CN 202020567030 U CN202020567030 U CN 202020567030U CN 212055943 U CN212055943 U CN 212055943U
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Abstract
The utility model relates to a high-frequency sealing ball valve, which comprises a valve body formed by fixedly connecting a left valve body and a right valve body, a ball core is arranged in a cavity of the valve body, a valve rod is fixedly connected with the ball core in the circumferential direction, valve seats are respectively arranged in the cavities of the left valve body and the right valve body, spring seats are respectively sleeved on the opposite ends of the two valve seats, a force storage spring is arranged between the spring seat and the valve seat, a first sealing ring is arranged between the excircle of the spring seat and the valve body, a second sealing ring is arranged between the inner circle of the spring seat and the valve seat, a third sealing ring is arranged between the excircle of the valve seat and the valve body, an upper shaft handle and a lower shaft handle of the ball core are respectively inserted into shaft holes of the upper positioning plate and the lower positioning plate, the upper positioning plate and the lower positioning plate are abutted against and limited by the left valve body and the right valve body, a dustproof sealing ring and a wear-, and a packing is arranged between the small-diameter section at the upper end of the valve rod and the valve cover, and a packing gland is arranged at the upper end of the packing.
Description
Technical Field
The utility model relates to a ball valve technical field, in particular to high-frequency ball valve of high seal.
Background
The high-frequency ball valve is a high-frequency switch and a quick switch which are used under the condition of high sealing requirement of a solid, liquid and gas three-phase medium, and has good cut-off performance. And a spring is arranged between the valve seat and the valve body of the high-frequency ball valve so as to ensure good sealing contact between the valve seat and the valve core. At present, a sealing structure is not formed in a cavity for mounting a spring between a valve seat and a valve body, and when a high-frequency ball valve is used for stopping a solid-phase medium, the solid-phase medium is easy to enter a mounting cavity of the spring at the valve seat because the solid-phase medium is small in particles and high in hardness. The solid-phase medium entering the spring installation cavity can cause the spring to be blocked, even the spring fails, the service life of the spring is greatly shortened, the sealing performance between the valve seat and the valve core is influenced, and the switching performance of the ball valve is reduced. In addition, the valve rod and the valve body of the existing high-frequency ball valve are sealed through the installed graphite ring, the graphite ring can only block micro particles in partial media from entering the valve rod cavity, and partial media particles still enter the valve rod cavity through an installation gap. The particles entering the valve rod cavity can influence the smoothness of the valve rod rotation, so that the moment of the switch is increased, even the valve rod is locked, the normal work of the high-frequency ball valve is seriously influenced, and the switching performance of the ball valve is lost.
Disclosure of Invention
The utility model aims at prior art not enough, provide a high sealed high frequency ball valve, its sealing performance that has improved disk seat department has prolonged the life who holds the power spring, has ensured good leakproofness between disk seat and the ball core, and has improved the dustproof performance and the sealing performance of valve rod department, has guaranteed the good switching performance of valve rod.
The technical scheme of the utility model is that: a high-sealed high-frequency ball valve comprises a valve body formed by fixedly connecting a left valve body and a right valve body, a ball core is arranged in a cavity of the valve body, a valve rod is fixedly connected with the ball core in the circumferential direction, the valve rod extends out of the right valve body, valve seats are respectively arranged in the cavities of the left valve body and the right valve body, the ball core is positioned between the left valve seat and the right valve seat, the opposite ends of the two valve seats are contacted with the ball core, spring seats are respectively arranged on the opposite ends, a force storage spring is arranged between the spring seats and the valve seats to enable the valve seats to be tightly matched with the ball core, a first sealing ring is arranged between the outer circle of the spring seats and the valve body, a second sealing ring is arranged between the inner circle of the spring seats and the valve seats, a third sealing ring is arranged between the outer circle of the valve seats and the valve body, axial handles are symmetrically arranged at the upper end and the, go up locating plate, bottom plate and left valve body, right valve body offset spacingly, the valve rod is the step shaft, valve rod lower extreme and the upper bolster handle circumference fixed connection of ball core, from up setting gradually dustproof sealing ring, wear-resisting cover down between the major diameter section of valve rod and the right valve body, a valve gap fixed connection just pushes down wear-resisting cover in right valve body upper end, set up the fourth sealing washer between valve gap and the right valve body, set up the filler between minor diameter section and the valve gap of valve rod upper end, the filler upper end sets up gland, and a packing clamp plate presses in the gland upper end, and the packing clamp plate cover is on the screw rod that the valve gap upper end was equipped with, through the nut locking, set up compression spring between nut and the packing clamp plate.
The valve seat is provided with a small-diameter section which extends axially, the spring seat is sleeved on the small-diameter section, the compression spring is abutted between the spring seat and the large-diameter section of the valve seat, a second sealing ring is arranged between the inner circle of the spring seat and the small-diameter section of the valve seat, and a third sealing ring is arranged between the outer circle of the large-diameter section of the valve seat and the valve body.
And the walls of the flow passages for medium to flow in the left valve body and the right valve body are respectively provided with an annular groove, and each spring seat is respectively abutted against the annular groove of the corresponding side valve body for limiting.
The valve cover is a stepped shaft, the small-diameter shaft section of the valve cover presses the upper end of the wear-resistant sleeve for limiting, a fourth sealing ring is arranged between the middle-diameter shaft section of the valve cover and the right valve body, and the large-diameter shaft section of the valve cover is fixedly connected with the right valve body through a bolt.
The valve cover is provided with a stepped hole for the valve rod to pass through, a filler is arranged between a large-diameter hole section at the upper end of the stepped hole and a small-diameter section at the upper end of the valve rod, and the large-diameter hole section at the lower end of the stepped hole is used for limiting the valve rod.
The small-diameter hole section of the valve cover stepped hole is located between the upper large-diameter hole section and the lower large-diameter hole section, and a fifth sealing ring is arranged between the small-diameter hole section of the stepped hole and the small-diameter section of the valve rod.
The upper end and the lower end of the cavity wall of the left valve body and the right valve body are respectively provided with a boss, the left side of the boss of the right valve body is provided with a right arc positioning groove, the right side of the boss of the left valve body is provided with a left arc positioning groove, and the upper positioning plate and the lower positioning plate abut against the arc positioning grooves of the left valve body and the right valve body to form a limiting position.
And the right end face of the left valve body is provided with a positioning flange which extends rightwards and is used for being inserted into the right valve body cavity.
The right end face of the left valve body is provided with a sealing flange, the left end face of the right valve body is provided with a sealing groove matched with the sealing flange, and a sealing gasket is arranged in the sealing groove.
The right end face of the left valve body is provided with a sealing groove, a sealing gasket is installed in the sealing groove, and the left end face of the right valve body is provided with a sealing flange matched with the sealing groove.
Adopt above-mentioned technical scheme: the ball valve comprises a valve body formed by fixedly connecting a left valve body and a right valve body, a ball core is arranged in a cavity of the valve body, a valve rod is circumferentially and fixedly connected with the ball core, the valve rod extends outwards from the right valve body, valve seats are respectively arranged in the cavity of the left valve body and the cavity of the right valve body, the ball core is positioned between the left valve seat and the right valve seat, opposite ends of the two valve seats are contacted with the ball core, spring seats are respectively arranged on opposite ends of the two valve seats, a power storage spring is arranged between the spring seats and the valve seats to enable the valve seats and the ball core to be tightly matched, a first sealing ring is arranged between the excircle of the spring seat and the valve body, a second sealing ring is arranged between the inner circle of the spring seat and the valve seat, a third sealing ring is arranged between the excircle of the valve seat and the valve body, shaft handles are symmetrically arranged at the upper end and the lower end of the, The right valve body offsets spacingly, the valve rod is the step shaft, and the path section of valve rod lower extreme and the upper bolster handle circumference fixed connection of ball core, from up setting gradually dustproof sealing ring, wear-resisting cover down between the path section of valve rod and the right valve body, a valve gap fixed connection just pushes down wear-resisting cover in right valve body upper end, set up the fourth sealing washer between valve gap and the right valve body, pack between path section and the valve gap of valve rod upper end and pack, the filler upper end sets up gland, and a packing clamp plate presses in the gland upper end, and the gland cover is locked through the nut on the screw rod that the valve gap upper end was equipped with, set up compression spring between nut and the gland. The high-frequency ball valve has good sealing performance and is simple and convenient to assemble. During assembly, the spring seat provided with the first sealing ring and the second sealing ring is sleeved on the valve seat, and the spring seat, the power storage spring and the valve seat provided with the third sealing ring are arranged in the right valve body cavity together. Then the upper and lower positioning plates are sleeved on the upper and lower shaft handles of the ball core, the ball core is assembled into the cavity of the right valve body, and the upper and lower positioning plates are both propped against the right valve body. And then, a left spring seat, a force storage spring and a left valve seat are arranged in the left valve body cavity in the same way, and the left valve body abuts against the left end of the right valve body and is fixedly connected through a bolt. At the moment, under the action of the force storage spring, the left valve seat and the right valve seat are tightly propped against the ball core, and the seal between the valve seats and the ball core is formed. And through the effect of first, two, three sealing washers, all can not have the medium of circulation to get into between spring holder and the valve body, between spring holder and the disk seat, between disk seat and the valve body for there is not the medium to get into in the space of installation power storage spring between spring holder and the disk seat. Therefore, the phenomenon that a medium enters the clamping stagnation force storage spring is avoided, the service life of the force storage spring under the use condition is prolonged, the axial movement amount of the valve seat is ensured, the sealing performance between the valve seat and the ball core is good, and the high sealing performance between the valve seat and the ball core can be kept all the time. The medium can not enter between the sealing surfaces of the valve seat and the ball core, the condition that the sealing surfaces are scratched by the medium is avoided, and the service life of the ball valve is prolonged. And finally, inserting the valve rod into a hole formed in the upper shaft handle of the ball core from an installation hole in the upper end of the right valve body to form circumferential fixed connection between the valve rod and the ball core, and sequentially sleeving a dustproof sealing ring and a wear-resistant sleeve on the large-diameter section of the valve rod. And covering the valve cover, fixing the valve cover at the upper end of the right valve body through bolts, pressing the wear-resistant sleeve at the lower end of the valve cover, filling filler between the valve cover and the small-diameter section of the valve rod, and sequentially sleeving a filler gland and a filler pressing plate on the valve rod. Meanwhile, the packing pressing plate is also sleeved on a screw rod arranged at the upper end of the valve cover, and a compression spring is installed and locked through a nut. At the moment, under the action of the compression spring, the packing pressing plate can tightly press the packing, so that good sealing performance between the valve cover and the valve rod is ensured, and the dustproof sealing ring between the valve rod and the right valve body also has sealing performance, so that double sealing at the position of the valve rod is formed. The dual-seal structure has increased the leakproofness of valve rod department, has avoided the entering of valve rod department medium, has guaranteed valve rod pivoted smooth and easy nature, has avoided the phenomenon of valve rod locking, and the switching of ball valve is normal, and the switching performance of ball valve is good, and is good to the function of cutting of medium.
The valve seat is provided with a small-diameter section which extends axially, the spring seat is sleeved on the small-diameter section, the compression spring is abutted between the spring seat and the large-diameter section of the valve seat, a second sealing ring is arranged between the inner circle of the spring seat and the small-diameter section of the valve seat, and a third sealing ring is arranged between the outer circle of the large-diameter section of the valve seat and the valve body. The valve seat with the structure is simple to process, and meanwhile, the spring and the spring seat are convenient to install.
And the walls of the flow passages for medium to flow in the left valve body and the right valve body are respectively provided with an annular groove, and each spring seat is respectively abutted against the annular groove of the corresponding side valve body for limiting. The annular groove forms the limit of the valve body to the spring seat, and the processing industry of the annular groove is simple.
The valve cover is a stepped shaft, the small-diameter shaft section of the valve cover presses the upper end of the wear-resistant sleeve for limiting, a fourth sealing ring is arranged between the middle-diameter shaft section of the valve cover and the right valve body, and the large-diameter shaft section of the valve cover is fixedly connected with the right valve body through a bolt. The fourth sealing ring ensures the sealing property between the valve cover and the right valve body, thereby not only preventing the medium from leaking, but also avoiding the substance in the external environment from entering. The connection of the valve cover and the right valve body is simple.
The valve gap is equipped with a shoulder hole that supplies the valve rod to pass, sets up the filler between the big footpath hole section of this shoulder hole upper end and the path section of valve rod upper end, and the big footpath hole section of shoulder hole lower extreme is used for the big footpath section of the spacing valve rod of axial to prevent the valve rod departure. The large-diameter hole section at the upper end of the stepped hole forms a packing cavity, so that packing of the packing is facilitated. And the big footpath hole section of shoulder hole lower extreme can supply the big footpath section of valve rod to insert, has guaranteed that the valve gap is spacing to wear-resisting cover and valve rod. The small-diameter hole section of the valve cover stepped hole is located between the upper large-diameter hole section and the lower large-diameter hole section, and a fifth sealing ring is arranged between the small-diameter hole section of the stepped hole and the small-diameter section of the valve rod. The fifth sealing ring can improve the sealing performance between the valve cover and the valve rod, and the sealing performance of the ball valve is improved.
The upper end and the lower end of the cavity wall of the left valve body and the right valve body are respectively provided with a boss, the left side of the boss of the right valve body is provided with a right arc positioning groove, the right side of the boss of the left valve body is provided with a left arc positioning groove, and the upper positioning plate and the lower positioning plate abut against the arc positioning grooves of the left valve body and the right valve body to form a limiting position. The circular arc positioning grooves on the left valve body boss and the right valve body boss are good in limiting effect on the positioning plate, so that accurate positioning of the ball core in the valve body cavity is guaranteed. The right end face of the left valve body is provided with a positioning flange which extends rightwards and is used for being inserted into the right valve body cavity, the positioning flange can increase the depth of an arc positioning groove in the left valve body cavity, the contact area of the upper positioning plate and the lower positioning plate with the left valve body is increased, and the upper positioning plate and the lower positioning plate are positioned better.
The right end face of the left valve body is provided with a sealing flange, the left end face of the right valve body is provided with a sealing groove matched with the sealing flange, and a sealing gasket is arranged in the sealing groove. Or, the right end face of the left valve body is provided with a sealing groove, a sealing gasket is arranged in the sealing groove, and the left end face of the right valve body is provided with a sealing flange matched with the sealing groove. The sealing flange and the sealing groove are matched to have a positioning effect, and the sealing gasket between the sealing flange and the sealing groove ensures the sealing performance between the left valve body and the right valve body and increases the sealing performance of the ball valve.
The high-sealing high-frequency ball valve is simple to assemble, stable and reliable to use and long in service life. The first sealing ring, the second sealing ring and the third sealing ring are arranged to prevent a circulating medium from entering a space between the spring seat and the valve seat, the force storage spring is guaranteed to normally work, the sealing between the valve seat and the ball core is kept well, and the service life of the ball valve is prolonged. And, the packing of valve rod department, dustproof sealing ring have increased the leakproofness of valve rod department, have guaranteed the smooth and easy nature of valve rod pivoted, and the switching performance of ball valve is good. The valve seat has good sealing performance, so that the normal work of the spring is ensured, the sealing performance between the valve seat and the ball core is good, the sealing performance at the valve rod is good, and the normal rotation of the valve rod is ensured. The high-frequency ball valve has high sealing performance and good switching performance.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view A of FIG. 1;
FIG. 3 is an enlarged view B of FIG. 1;
FIG. 4 is an enlarged view of C of FIG. 1;
FIG. 5 is a schematic structural view of a valve cover;
FIG. 6 is a schematic structural view of a right valve body;
fig. 7 is a schematic structural view of the left valve body.
Detailed Description
Referring to fig. 1 to 7, a high-frequency ball valve with high sealing performance comprises a valve body formed by fixedly connecting a left valve body 4 and a right valve body 15 through bolts. A ball core 14 is arranged in the cavity of the valve body, and a valve rod 10 is fixedly connected with the circumference of the ball core 14, wherein the valve rod 10 extends outwards from a right valve body 15. The right end face of the left valve body 4 is provided with a sealing flange, the left end face of the right valve body 15 is provided with a sealing groove matched with the sealing flange, and a sealing gasket 5 is arranged in the sealing groove. Or, a sealing groove is formed in the right end face of the left valve body 4, a sealing gasket 5 is installed in the sealing groove, and a sealing flange matched with the sealing groove is formed in the left end face of the right valve body 15. The sealing flange and the sealing groove are matched to have a positioning effect, and the sealing gasket 5 between the sealing flange and the sealing groove ensures the sealing performance between the left valve body 4 and the right valve body 15, so that the sealing performance of the ball valve is improved. In the embodiment, a sealing flange is arranged on the left valve body 4, and a sealing groove is arranged on the right valve body 15. The left valve body 4 and the right valve body 15 are internally provided with valve seats 3 respectively, the ball core 14 is positioned between the left valve seat and the right valve seat, the opposite ends of the two valve seats 3 are in contact with the ball core 14, and the opposite ends are sleeved with the spring seats 1 respectively. And the flow channel walls for medium circulation of the left valve body 4 and the right valve body 15 are respectively provided with an annular groove 25, and each spring seat 1 is respectively abutted against the annular groove 25 of the corresponding side valve body for limiting. The annular groove 25 forms the limit of the valve body to the spring seat 1, and the annular groove 25 is simple in machining and can be machined by turning. The valve seat 3 is provided with a small-diameter section extending axially, and the spring seat 1 is sleeved on the small-diameter section. A power storage spring 2 is arranged between the spring seat 1 and the valve seat 3, so that the valve seat 3 and the ball core 14 form close fit, and the power storage spring 2 is abutted between the large-diameter sections of the spring seat 1 and the valve seat 3. A first sealing ring 22 is arranged between the excircle of the spring seat 1 and the valve body, and an annular groove for mounting the first sealing ring 22 is arranged on the excircle of the spring seat 1. A second sealing ring 23 is arranged between the inner circle of the mounting spring seat 1 and the small-diameter section of the valve seat 3, and the inner circle of the mounting spring seat 1 is provided with a ring groove for mounting the second sealing ring 23. A third sealing ring 24 is arranged between the excircle of the large-diameter section of the valve seat 3 and the valve body, and an annular groove for mounting the third sealing ring 24 is arranged on the excircle of the valve seat 3. The processing of this structure disk seat 3 is simple, and the excircle accessible lathe work of disk seat 3 has also made things convenient for the installation of holding power spring 2 and spring holder 1 simultaneously. The upper end and the lower end of the ball core 14 are symmetrically provided with shaft handles 14-1, the upper shaft handle 14-1 and the lower shaft handle 14-1 are respectively inserted into shaft holes of an upper positioning plate 13 and a lower positioning plate 16 to form clearance fit, and the upper positioning plate 13 and the lower positioning plate 16 are abutted against the left valve body 4 and the right valve body 15 for limiting. Bosses are respectively arranged at the upper end and the lower end of the cavity walls of the left valve body 4 and the right valve body 15, a right arc positioning groove 15-1 is arranged at the left side of the boss of the right valve body 15, a left arc positioning groove 4-1 is arranged at the right side of the boss of the left valve body 4, and an upper positioning plate 13 and a lower positioning plate 16 abut against the arc positioning grooves of the left valve body 4 and the right valve body 15 to form a limiting position. The circular arc positioning grooves on the left valve body platform and the right valve body platform are good in limiting of the positioning plate, so that accurate positioning of the ball core 14 in the valve body cavity is guaranteed. And a positioning flange 4-2 which extends rightwards and is used for being inserted into the cavity of the right valve body 15 is arranged on the right end face of the left valve body 4. The positioning flange 4-2 can increase the depth of a left arc positioning groove 4-1 in the cavity of the left valve body 4, and increase the contact area between the upper and lower positioning plates and the left valve body 4, so that the upper and lower positioning plates can be positioned better. The valve rod 10 is a stepped shaft, and a small-diameter section at the lower end of the valve rod 10 is fixedly connected with an upper shaft handle of the ball core 14 in the circumferential direction. The circumferential fixed connection can be a square hole connection, and can also be a flat-cutting circumferential fixed connection arranged through a small-diameter section at the lower end of the valve rod 10. And a dustproof sealing ring 6 and a wear-resistant sleeve 7 are sequentially arranged between the large-diameter section of the valve rod 10 and the right valve body 15 from bottom to top. The right valve body 15 is provided with a hole for the valve rod 10 to pass through, the hole is a stepped hole, the small-diameter section at the lower end of the hole is matched with the large-diameter section of the valve rod 10, the large-diameter section at the upper end of the hole is used for installing the dustproof sealing ring 6 and the wear-resistant sleeve 7, and the dustproof sealing ring 6 is propped against the hole shoulder to form limiting. A valve cover 12 is fixedly connected to the upper end of the right valve body 15 and presses the wear-resistant sleeve 7, and the valve cover 12 is a stepped shaft. The small-diameter shaft section of the valve cover 12 presses the upper end of the wear-resistant sleeve 7 for limiting, a fourth sealing ring 17 is arranged between the middle-diameter shaft section of the valve cover 12 and the right valve body 15, and the large-diameter shaft section of the valve cover 12 is fixedly connected with the right valve body 15 through bolts. The fourth sealing ring 17 ensures the sealing performance between the valve cover 12 and the right valve body 15, not only prevents the medium from leaking out, but also prevents the substances in the external environment from entering, and the connection between the valve cover 12 and the right valve body 15 is simple. The valve cover 12 is provided with a stepped hole 12-1 for the valve rod 10 to pass through, a large-diameter hole section at the lower end of the stepped hole 12-1 is used for axially limiting the large-diameter section of the valve rod 10 to prevent the valve rod from flying out, and a filler 8 is filled between the large-diameter hole section at the upper end of the stepped hole 12-1 and the small-diameter section at the upper end of the valve rod 10. The large-diameter hole section at the upper end of the stepped hole 12-1 forms a packing cavity, so that packing is facilitated, and the large-diameter hole section at the lower end of the stepped hole 12-1 can be inserted by the large-diameter section of the valve rod 10, so that the limit of the valve cover 12 on the wear-resistant sleeve 7 is guaranteed. The small-diameter hole section of the stepped hole 12-1 of the valve cover 12 is positioned between the upper large-diameter hole section and the lower large-diameter hole section, and a fifth sealing ring 21 is arranged between the small-diameter hole section of the stepped hole 12-1 and the small-diameter section of the valve rod 10. The valve cover 12 is provided with an annular groove for mounting the fifth sealing ring 21, and the fifth sealing ring 21 can increase the sealing property between the valve cover 12 and the valve rod 10, so that the sealing property of the ball valve is improved. The upper end of the packing 8 is provided with a packing gland 9, a packing press plate 11 is pressed at the upper end of the packing gland 9, the packing press plate 11 is sleeved on a screw rod 20 arranged at the upper end of the valve cover 12 and locked by a nut 19, and a compression spring 18 is arranged between the nut 19 and the packing press plate 11.
The high-frequency ball valve has the advantages of good sealing performance, simple and convenient assembly and long service life. During assembly, the spring seat 1 provided with the first sealing ring and the second sealing ring is sleeved on the valve seat 3, and the spring seat 1, the power storage spring 2 and the valve seat 3 provided with the third sealing ring 23 are arranged in the cavity of the right valve body 15. Then, the upper and lower positioning plates are sleeved on the upper and lower shaft handles 14-1 of the ball core 14, the ball core 14 is assembled into the cavity of the right valve body 15, and the upper and lower positioning plates are both propped against the right valve body 15. And then, a left spring seat 1 force storage spring 2 and a left valve seat 3 are arranged in the cavity of the left valve body 4 in the same way, and the left valve body 4 is abutted against the left end of the right valve body 15 and is fixedly connected through a bolt. At this time, under the action of the power storage spring 2, the left and right valve seats 3 tightly abut against the ball core 14, and a seal between the valve seats 3 and the ball core 14 is formed. And through the effect of first, second, three sealing washer, between spring holder 1 and the valve body, between spring holder 1 and the disk seat 3, all can not have the medium of circulation to get into between disk seat 3 and the valve body for there is not the medium to get into in the space of installation power storage spring 2 between spring holder 1 and the disk seat 3. Therefore, the phenomenon that a medium enters the clamping force storage spring 2 is avoided, the normal work of the force storage spring 2 under the use condition is ensured, the axial movement amount of the valve seat and the good sealing performance between the valve seat and the ball core are ensured, and the high sealing performance between the valve seat and the ball core can be kept all the time. The medium can not enter between the sealing surfaces of the valve seat 3 and the ball core 14, the condition that the sealing surfaces are scratched by the medium is avoided, and the service life of the ball valve is prolonged. And finally, inserting the valve rod 10 into a hole formed in a shaft handle 14-1 on the ball core 14 from a hole in the upper end of the right valve body 15, wherein the hole in the shaft handle 14-1 can be a square hole, forming circumferential fixed connection between the valve rod 10 and the ball core 14, and sequentially sleeving a dustproof sealing ring 6 and a wear-resistant sleeve 7 on a large-diameter section of the valve rod 10. The valve cover 12 is covered on the valve cover 12, the valve cover 12 is fixed at the upper end of the right valve body 15 through bolts, the lower end of the valve cover 12 presses the wear-resistant sleeve 7, and after the packing 8 is filled between the valve cover 12 and the small-diameter section of the valve rod 10, the packing gland 9 and the packing pressing plate 11 are sequentially sleeved on the valve rod 10. Meanwhile, the packing pressing plate 11 is also sleeved on the screw rod 10 arranged at the upper end of the valve cover 12, and the compression spring 18 is installed and locked through the nut 19. At this time, under the action of the compression spring 18, the packing pressing plate 11 can tightly press the packing 8, and good sealing performance between the valve cover 12 and the valve rod 10 is ensured. And the dustproof sealing ring 6 between the valve rod 10 and the right valve body 15 also has sealing performance, and the fifth sealing ring 21 forms multiple sealing at the valve rod 10. The multiple sealing structure greatly increases the sealing performance of the valve rod 10, avoids the medium entering the valve rod 10, ensures the smoothness of the rotation of the valve rod 10, avoids the locking phenomenon of the valve rod 10, and ensures the normal opening and closing of the ball valve. The high-frequency ball valve has high sealing performance, good switching performance and good medium cutting function.
Claims (10)
1. A high-sealed high-frequency ball valve comprises a valve body formed by fixedly connecting a left valve body (4) and a right valve body (15), a ball core (14) is installed in a cavity of the valve body, a valve rod (10) is fixedly connected with the ball core (14) in the circumferential direction, and the valve rod (10) extends outwards from the right valve body (15), and is characterized in that: the valve seat is characterized in that valve seats (3) are respectively arranged in cavities of the left valve body (4) and the right valve body (15), the ball core (14) is positioned between the left valve seat and the right valve seat, opposite ends of the two valve seats (3) are contacted with the ball core (14), spring seats (1) are respectively arranged on opposite ends, a force storage spring (2) is arranged between the spring seats (1) and the valve seats (3) to ensure that the valve seats (3) and the ball core (14) are tightly matched, a first sealing ring (22) is arranged between the excircle of the spring seat (1) and the valve body, a second sealing ring (23) is arranged between the inner circle of the spring seat (1) and the valve seat (3), a third sealing ring (24) is arranged between the excircle of the valve seat (3) and the valve body, shaft handles (14-1) are symmetrically arranged at the upper end and the lower end of the ball core (14), and an upper shaft handle (14-1) and a lower shaft handle are respectively, an upper positioning plate (13) and a lower positioning plate (16) are abutted and limited with a left valve body (4) and a right valve body (15), the valve rod (10) is a stepped shaft, the lower end of the valve rod (10) is circumferentially and fixedly connected with an upper shaft handle of a ball core (14), a dustproof sealing ring (6) and a wear-resistant sleeve (7) are sequentially arranged between a large-diameter section of the valve rod (10) and the right valve body (15) from bottom to top, a valve cover (12) is fixedly connected with the upper end of the right valve body (15) and presses the wear-resistant sleeve (7), a fourth sealing ring (17) is arranged between the valve cover (12) and the right valve body (15), a packing (8) is arranged between a small-diameter section of the upper end of the valve rod (10) and the valve cover (12), a packing gland (9) is arranged at the upper end of the packing (8), a packing press plate (11) is pressed at the upper end of the packing press plate, the packing is locked by a nut (19), and a compression spring (18) is arranged between the nut (19) and the packing pressure plate (11).
2. The high-sealed high-frequency ball valve according to claim 1, wherein: disk seat (3) are equipped with the path section of an axial extension, spring holder (1) cover is on this path section, hold power spring (2) and support between the path section of the big of spring holder (1) and disk seat (3), set up second sealing washer (23) between the path section of circle and disk seat (3) in spring holder (1), set up third sealing washer (24) between disk seat (3) big path section excircle and the valve body.
3. The high-sealed high-frequency ball valve according to claim 1, wherein: and the flow channel walls for medium circulation of the left valve body (4) and the right valve body (15) are respectively provided with an annular groove, and each spring seat (1) is respectively abutted to the annular groove of the corresponding side valve body for limiting.
4. The high-sealed high-frequency ball valve according to claim 1, wherein: the valve cover (12) is a stepped shaft, the small-diameter shaft section of the valve cover (12) presses the upper end of the wear-resistant sleeve (7) to be limited, a fourth sealing ring (17) is arranged between the middle-diameter shaft section of the valve cover (12) and the right valve body (15), and the large-diameter shaft section of the valve cover (12) is fixedly connected with the right valve body (15) through a bolt.
5. The high-sealed high-frequency ball valve according to claim 1, wherein: the valve cover (12) is provided with a stepped hole (12-1) for the valve rod (10) to pass through, a filler (8) is filled between a large-diameter hole section at the upper end of the stepped hole (12-1) and a small-diameter section at the upper end of the valve rod (10), and the large-diameter hole section at the lower end of the stepped hole (12-1) is used for limiting the valve rod (10).
6. The high-sealed high-frequency ball valve according to claim 5, wherein: the small-diameter hole section of the stepped hole (12-1) of the valve cover (12) is positioned between the upper large-diameter hole section and the lower large-diameter hole section, and a fifth sealing ring (21) is arranged between the small-diameter hole section of the stepped hole (12-1) and the small-diameter section of the valve rod (10).
7. The high-sealed high-frequency ball valve according to claim 1, wherein: the upper end and the lower end of the cavity walls of the left valve body (4) and the right valve body (15) are respectively provided with a boss, the left side of the boss of the right valve body (15) is provided with a right arc positioning groove (15-1), the right side of the boss of the left valve body (4) is provided with a left arc positioning groove (4-1), and the arc positioning grooves of the upper positioning plate (13) and the lower positioning plate (16) which are abutted against the left valve body (4) and the right valve body (15) form a limit position.
8. The high-sealed high-frequency ball valve according to claim 7, wherein: and the right end face of the left valve body (4) is provided with a positioning flange (4-2) which extends rightwards and is used for being inserted into the cavity of the right valve body (15).
9. The high-sealed high-frequency ball valve according to claim 1, wherein: the right end face of the left valve body (4) is provided with a sealing flange, the left end face of the right valve body (15) is provided with a sealing groove matched with the sealing flange, and a sealing gasket (5) is arranged in the sealing groove.
10. The high-sealed high-frequency ball valve according to claim 1, wherein: the right end face of the left valve body (4) is provided with a sealing groove, a sealing gasket (5) is installed in the sealing groove, and the left end face of the right valve body (15) is provided with a sealing flange matched with the sealing groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020567030.1U CN212055943U (en) | 2020-04-16 | 2020-04-16 | High-sealed high-frequency ball valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020567030.1U CN212055943U (en) | 2020-04-16 | 2020-04-16 | High-sealed high-frequency ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322425A (en) * | 2020-04-16 | 2020-06-23 | 重庆川仪调节阀有限公司 | High-sealed high-frequency ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322425A (en) * | 2020-04-16 | 2020-06-23 | 重庆川仪调节阀有限公司 | High-sealed high-frequency ball valve |
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