CN216200651U - Telescopic offset type start vector sealing valve - Google Patents

Abstract

The utility model discloses a telescopic offset type starting vector sealing valve which comprises a valve body, a valve plate and a valve shaft, wherein the valve plate is rotatably connected onto the valve body, one half of an inner cavity of the valve body in the axial direction is a hemispherical cavity, the other half of the inner cavity is a cylindrical cavity, a vector sealing ring is embedded in the cylindrical cavity, the inner surface of the vector sealing ring and the hemispherical cavity of the valve body form a spherical section cavity, the radial outer side surface of the valve plate is consistent with the spherical section cavity, the valve shaft drives the valve plate to rotate, a telescopic lantern ring is installed at the outer end of the vector sealing ring, the telescopic lantern ring is of a stepped hole structure, an inner hole is movably sleeved into the small end of the valve body, a sealing ring is adopted to be in compression joint with the sealing ring, and the sealing ring is located at the outer cylindrical surface of the valve body and the inner end of the inner cylindrical surface of the telescopic lantern ring. The utility model adopts the external sealing mode of the valve body, reduces the sealing difficulty, increases the sealing reliability, is externally mounted and is convenient for sealing and maintenance, and the position between the telescopic lantern ring and the valve body is adjustable, thereby realizing the telescopic structure, facilitating the accurate butt joint of the valve and the pipeline flange plate and being convenient for reconstructing the existing equipment.

Description

Telescopic offset type start vector sealing valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a telescopic offset type starting vector sealing valve.

Background

At present, valves used domestically and internationally are various, and most of the valves are valves with main structures and structures of butterfly valves, ball valves and gate valves. The valves of the kind are mostly heavy due to large volume; the installation size is longer; the sealing effect is poor; the requirements on opening and closing torque force and torque are high; the power required by opening and closing by using an electric or pneumatic actuator and other transmission modes is large; the service life is short, and the valve is inconsistent with the current facility specification standards of various valve wells, chambers and the like in the use environment, and a large-caliber valve is usually arranged in a small valve well or chamber (or a valve is arranged firstly and then the well or chamber is built, which is obviously inconsistent with the later installation, replacement, disassembly and assembly, maintenance, use and the like. In addition, if a certain local valve in a pipe network system needs to be replaced or maintained, the replacement operation can be realized only by opening and closing the main pipe control valve or the main valve. The operation of point disconnection and point repair (or replacement) cannot be realized, so that a large amount of resources such as manpower, material resources, media and the like are lost, and the disconnection or paralysis of a main pipe of a pipe network or other systems is caused.

Chinese patent application (application number is 2019112794029) discloses a vector is sealed also valve, this valve is including the valve body also, valve plate and valve shaft, the valve plate is connected to the valve body on through the valve shaft with its fixed connection rotatably, half inner chamber of axial of valve body sets up to the hemisphere chamber, half inner chamber is the cylinder chamber, the cylinder chamber embedding has the vector sealing washer, vector sealing washer internal surface constitutes spherical cross section chamber with valve body hemisphere chamber, the radial outside surface of valve plate is unanimous with spherical cross section chamber, this structure is when the butt joint to two pipelines, because of the butt joint department is unadjustable, be difficult to realize sealing connection stability and be not convenient for the maintenance change.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the utility model provides a sealed valve that also has of flexible offset formula start vector to solve the problem that exists among the prior art that uses.

The technical scheme adopted by the utility model is as follows: the utility model provides a flexible offset-type start vector also valve, which comprises a valve body, valve plate and valve shaft, the valve plate is rotatably connected to on the valve body, half inner chamber of axial of valve body sets up to the hemisphere chamber, second half inner chamber is the cylinder chamber, the cylinder chamber embedding has the vector sealing washer, vector sealing washer internal surface constitutes spherical cross section chamber with the hemisphere chamber of valve body, the radial outside surface of valve plate is unanimous with spherical cross section chamber, valve shaft drive valve plate is rotatory, the telescopic lantern ring is installed to vector sealing washer outer end, the telescopic lantern ring is the step hole structure, the hole activity embolias the valve body tip and adopts sealed clamping ring crimping sealing washer to the telescopic lantern ring on, the sealing washer is located valve body outer cylinder and telescopic lantern ring inner cylinder inner.

Preferably, the valve plate is axially and fixedly connected with a sector gear in a centrosymmetric manner, a driving gear meshed with the sector gear is fixedly connected to the valve shaft, and the valve shaft is rotationally connected to the valve body and is offset from the center of the valve plate by a certain distance.

Preferably, the sector gear adopts a toothed ring structure, the upper side and the lower side of the driving gear are rotatably connected with two limiting plates, the free ends of the two limiting plates are provided with limiting pins, and the limiting pins are arranged in rings of the sector gear.

Preferably, the sector gear is fixedly connected to the valve plate through a screw I, and the screw I is connected to the valve plate through the sector gear or connected to the sector gear through the valve plate.

Preferably, the outer end of the valve shaft is rotatably connected with a fixed seat, and the fixed seat is fixedly connected to the outside of the valve body.

Preferably, the vector sealing ring and the valve body are in transition or interference fit.

Preferably, the other half inner chamber of the valve body is of a step hole structure, the outer end of the vector sealing ring is provided with a flange plate, and the flange plate is fastened on the valve body by a second screw after the vector sealing ring is embedded into the step hole structure.

Preferably, a gap is kept between the inner end of the vector sealing ring and the inner end of the stepped hole structure, and the gap is not more than 1 mm.

Preferably, the diameter of the inner cavity of the valve body is 0.025% -8% larger than the caliber of the valve body.

Preferably, a valve shaft sealing ring is arranged at the joint of the valve shaft and the valve body.

Preferably, the cylindrical surface of the limit pin is provided with a roller.

Preferably, the small end of the valve body is provided with a convex anti-falling platform, the outer diameter of the convex anti-falling platform is larger than the inner diameter of the telescopic lantern ring, and the telescopic lantern ring is of a two-half separated structure or is provided with an opening.

During the equipment, arrange the valve plate in the hemisphere chamber department in the valve body, it is fixed with vector sealing washer embedding in the valve body, and install the valve body tip with the telescopic sleeve ring and sealed clamping ring and sealing washer, spacing fan-shaped gear to two limiting plates on the valve shaft in and install the spacer pin additional and keep with the driving gear meshing, rotary valve plate, with fan-shaped gear fixed connection on the valve plate, accomplish the installation of also valve, when the flexible length of the telescopic sleeve ring is adjusted to needs, loosen sealed clamping ring, lock the clamping ring after moving suitable position.

The utility model has the beneficial effects that: compared with the prior art, the utility model has the following effects:

(1) the utility model adopts the external sealing mode of the valve body, reduces the sealing difficulty, increases the sealing reliability, and the sealing element belongs to a vulnerable part, is externally installed and is convenient for sealing and maintenance;

(2) the valve plate is driven to be opened and closed by adopting the offset of the gear pair, the spherical surface of the valve plate is thoroughly in full self-positioning contact with the spherical section cavity of the valve body, the complete rigid sealing of the spherical surface is realized, the sealing effect is better, and the axial bearing capacity is better; the assembly difficulty is reduced, the valve is more convenient to install, and the installation difficulty is reduced; the offset type starting is realized, the starting torque is reduced, the labor is saved or the power of a driving motor is reduced, the axis of the valve shaft deviates from the axis of the valve plate, and the structure is more compact; aiming at the inner cavity of the valve body of the spherical section cavity, the inner cavity of the valve body is axially divided into two halves (the inner surface of a half vector sealing ring serves as the inner surface of the valve body), the vector sealing ring serves as a half spherical cavity, so that the spherical section cavity is machined, the machining difficulty of the inner spherical surface is reduced, the machining cost is greatly reduced, the vector sealing ring is more convenient to machine, the vector sealing ring is axially pressed in, the radial clearance adjustment between the whole spherical section cavity and the spherical section of the valve plate is facilitated, the sealing performance between the spherical section cavity and the spherical section of the valve plate is better, the valve only relates to main components of the valve body, the valve shaft, the valve plate and the vector sealing ring, the manufacturing requirement is simple, and the valve has the characteristic of more convenient assembly and disassembly;

(3) the arrangement mode of limiting the fan-shaped gear ring by the limiting plate and the limiting pin is adopted, so that on one hand, the limiting function that the driving gear and the fan-shaped gear are always meshed is achieved, and on the other hand, the directional rotation of the limiting valve plate is achieved;

(4) when the first screw penetrates through the sector gear, the use of a sealing part is reduced, and when the first screw penetrates through the valve plate, a screw sealing ring and an arc-shaped toothed ring are required to be arranged at the screw, so that the resistance to fluid flowing through is small;

(5) the interference fit mode is adopted, the sealing performance and the connection reliability between the valve body and the vector sealing ring can be realized, the transition fit is adopted, the installation is convenient, and the sealing can be realized by matching with the sealing ring;

(6) the stepped hole structure is convenient for embedding the vector sealing ring of the flange plate structure into the stepped hole structure, and the connection reliability of the vector sealing ring is further enhanced;

(7) the gap is arranged, so that the position adjustment between the inner spherical cavity surface of the vector sealing ring and the outer spherical surface of the valve plate is convenient to realize, and the sealing property is better;

(8) the vector sealing ring is fixed by interference fit or transition fit, the connection is reliable, the installation is convenient by adopting a compression joint mode, and the outer diameter of the vector sealing ring is larger than the inner hole of the pipeline, so that the anti-falling function can be realized, and the use safety is further improved;

(9) the valve body of the valve structure is thinned, and the flange plates of the pipelines at two sides are butted at two sides of the valve body, so that the structure of the mounting position is more compact.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic sectional view A-A of FIG. 1 (valve plate open state);

FIG. 3 is a schematic sectional view A-A of FIG. 1 (valve plate closed state);

FIG. 4 is a schematic sectional view A-A of FIG. 1 (soft and hard combination seal);

FIG. 5 is a schematic sectional structure view of a soft and hard combined sealing valve body;

FIG. 6 is a side view of the sector gear (with screws installed through the sector gear);

FIG. 7 is a front view of the sector gear (with screws installed through the sector gear);

FIG. 8 is a schematic structural view of a joint of a limiting plate and a limiting pin;

fig. 9 is an enlarged view of a portion a of fig. 2.

Detailed Description

The utility model is further described with reference to the accompanying drawings and specific embodiments.

Vector seal in this application means: the method is a mode for realizing that the mutual natural variables between surfaces (contact) meet the sealing performance requirement through the physical properties and the forms of substances.

Example 1: as shown in figures 1-9, a telescopic offset type start vector sealing valve comprises a valve body 1, a valve plate 2 and a valve shaft 3, wherein the valve plate 2 is rotatably connected to the valve body 1, one half of an axial inner cavity of the valve body 1 is set to be a hemispherical cavity, the other half of the axial inner cavity is a cylindrical cavity, a vector sealing ring 4 is embedded in the cylindrical cavity, the inner surface of the vector sealing ring 4 and the hemispherical cavity of the valve body 1 form a spherical section cavity, the radial outer side surface of the valve plate 2 is consistent with the spherical section cavity, the valve shaft 3 drives the valve plate 2 to rotate, an expansion lantern ring 17 is installed at the outer end of the vector sealing ring 4, the expansion lantern ring 17 is of a step hole structure, an inner hole is movably sleeved at the small end of the valve body 1 and is in compression joint with a sealing ring 19 by adopting a sealing press ring 18, the sealing ring is positioned at the inner end of the outer cylindrical surface of the valve body 1 and the inner cylindrical surface of the expansion lantern ring 17, a sector gear 5 is fixedly connected at the center of one side of the valve plate 2 in a symmetrical and axially, a driving gear 6 which is meshed with the sector gear 5 is fixedly connected to the valve shaft 3, the valve shaft 3 is rotationally connected to the valve body 1 and is offset from the center of the valve plate 2 by a certain distance, the utility model adopts a valve body external sealing mode, reduces the sealing difficulty, increases the sealing reliability, the sealing element belongs to a vulnerable part, is externally installed and is also convenient for sealing and maintenance, and the position between the telescopic lantern ring and the valve body is adjustable, thereby realizing a telescopic structure, facilitating the accurate butt joint of the valve and a pipeline flange plate, facilitating the maintenance and replacement of the existing equipment, adopting a gear pair to offset and drive the valve plate to open and close, leading the spherical surface of the valve plate to be thoroughly in full self-positioning contact with the spherical section cavity of the valve body, realizing complete spherical surface rigid sealing, having better sealing effect and better axial bearing capacity; the assembly difficulty is reduced, the valve is more convenient to install, and the installation difficulty is reduced; the offset type starting reduces the starting torque, saves more labor or reduces the power of the driving motor.

Preferably, above-mentioned valve body 1 tip is provided with evagination anticreep platform 20, and evagination anticreep platform 20 external diameter is greater than the telescopic lantern ring 17 internal diameter and is less than the big section hole internal diameter of the step pore structure of telescopic lantern ring 8, and telescopic lantern ring 17 sets up to two halves disconnect-type structures or is provided with the opening, can avoid the telescopic lantern ring pulling too big telescopic lantern ring that leads to drop, and simple to operate is swift.

Preferably, above-mentioned sector gear 5 adopts the ring gear structure, and the side swivelling joint has two limiting plates 7 about driving gear 6, and two 7 free ends of limiting plate are provided with spacer pin 8, and sector gear 5's intra-annular is arranged in to spacer pin 8, adopts limiting plate and spacer pin, on the one hand, plays driving gear and sector gear and keeps the limiting displacement of meshing all the time, and on the other hand also plays the effect of spacing valve plate directional rotation.

Preferably, the sector gear 5 is fixedly connected to the valve plate 2 through a first screw 9, the first screw 9 penetrates through the sector gear 5 to be connected to the valve plate 2 to be locked or penetrates through the valve plate 2 to be connected to the sector gear 5 to be locked, when the first screw penetrates through the sector gear, the use of a sealing part is reduced, and when the first screw penetrates through the valve plate, a screw sealing ring 13 is required to be arranged at the screw, and the arc-shaped toothed ring has small resistance to the flowing of fluid.

Preferably, 3 outer ends of above-mentioned valve shaft swivelling joint have fixing base 12, and fixing base 12 fixed connection is outside 1 valve body, the stable connection of the valve shaft of being convenient for.

Preferably, the vector sealing ring 4 and the valve body 1 are in transition or interference fit.

Preferably, the other half inner cavity of the valve body 1 is of a step hole structure, the flange plate 10 is arranged at the outer end of the vector sealing ring 4, and the flange plate 10 is fastened on the valve body 1 by the second screws 21 after the vector sealing ring 4 is embedded into the step hole structure.

Preferably, a gap is kept between the inner end of the vector sealing ring 4 and the inner end of the stepped hole structure, the gap is not larger than 1mm, the position adjustment between the inner spherical cavity surface of the vector sealing ring and the outer spherical surface of the valve plate is convenient to realize, and the sealing performance is better.

Preferably, the diameter of the inner cavity of the valve body 1 is larger than 0.025% -8% of the caliber of the valve body 1, the requirement of thinning the valve body is met under the condition that the axial force of the valve plate can be borne, and the weight is lighter.

Preferably, a valve shaft sealing ring 11 is provided at a connection portion of the valve shaft 3 and the valve body 1.

Preferably, the pin 8 has a cylindrical surface provided with a roller.

Preferably, the aforesaid all sets up sunken toper face portion in valve plate backing water side and the side of intaking, can increase and overflow the section ratio, reduces the medium resistance, reduces valve plate weight, and increase valve plate load, life is higher.

The valve body 1 and the telescopic lantern ring 17 circumference all are provided with the mounting flange 14 of symmetry, and mounting flange 14 leans on the valve body outside the valve shaft 3, and the spherical cross section chamber of valve body leans on the valve body opposite side, and a plurality of through-holes 15 are arranged to mounting flange, and when the pipeline was installed to the valve body both sides, all docked the mounting flange both sides with the ring flange of both sides pipeline tip, through bolt fixed connection, the mounting flange junction still was provided with the stagnant water pad.

Preferably, an annular packing ring 16 is installed between the inner end of the vector sealing ring 4 and the inner end of the hemispherical cavity of the valve body 1, the inner side of the packing ring 16 is higher than the surface of the spherical section cavity, the packing ring is in elastic contact with the outer surface of the valve plate and is matched with the rigid sealing of the spherical section cavity to realize the flexible and rigid combined sealing of the valve, the processing requirements of the spherical section cavity and the spherical surface of the valve plate are reduced, the manufacturing cost is reduced, the inner end of the vector sealing ring 4 is of a first conical surface structure with a small inner part and a large outer part, the inner end of the hemispherical cavity of the valve body 1 is provided with a second conical surface structure which is symmetrical to the first conical surface structure, the packing ring 16 is extruded between the first conical surface structure and the second conical surface structure, the conical surface structure plays a role in anti-falling limit and fastening of the packing ring and an installation and guide role of the vector sealing ring 4, as shown in figure 4, the valve plate is installed on the conical surface first, and then the packing ring (the annular elastic sealing ring with a circular section) is embedded into the inner end structure of the hemispherical cavity, and then the vector sealing ring is embedded into a set position, so that the packing ring is fastened on the cavity with the spherical section.

The valve also operates on and off: the valve also drives a driving gear through a valve shaft, the driving gear drives a valve plate to rotate, the valve plate rotates 90 degrees in a spherical cavity of the valve body to open and close, medium closing is realized through interaction of spherical surfaces of the valve plate and the valve body 1, and the valve plate and the spherical section cavity are sealed in a rigid mode or are filled with a packing ring to form a combined sealing flow stopping medium.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.

Claims (10)

1. The utility model provides a flexible offset-type starts sealed valve of vector, including valve body (1), valve plate (2) and valve shaft (3), valve plate (2) rotatably are connected to on valve body (1), half inner chamber of axial of valve body (1) sets up to the hemisphere chamber, half inner chamber is the cylinder chamber, the cylinder chamber embedding has vector sealing washer (4), vector sealing washer (4) internal surface constitutes spherical cross section chamber with the hemisphere chamber of valve body (1), valve plate (2) radial outside surface is unanimous with spherical cross section chamber, valve shaft (3) drive valve plate (2) are rotatory, its characterized in that: the outer end of the vector sealing ring (4) is provided with a telescopic lantern ring (17), the telescopic lantern ring (17) is of a step hole structure, an inner hole is movably sleeved into the small end of the valve body (1) and is connected with the sealing ring (19) in a compression mode to the telescopic lantern ring (17) through a sealing compression ring (18), and the sealing ring is located at the inner end of the outer cylindrical surface of the valve body (1) and the inner cylindrical surface of the telescopic lantern ring (17).

2. A telescopically biased start vector seal valve according to claim 1, wherein: valve plate (2) one side central symmetry axial fixedly connected with sector gear (5), driving gear (6) fixed connection with sector gear (5) intermeshing is on valve shaft (3), valve shaft (3) swivelling joint just offset valve plate (2) center one section distance on valve body (1).

3. A telescopically biased start vector seal valve according to claim 2, wherein: sector gear (5) adopt the ring gear structure, and the downside swivelling joint has two limiting plate (7) about driving gear (6), and two limiting plate (7) free end are provided with spacer pin (8), and sector gear (5) intra-annular is arranged in to spacer pin (8).

4. A telescopically biased start vector seal valve according to claim 2, wherein: two end parts of the sector gear (5) are fixedly connected to the valve plate (2) through two screws I (9), and the screws I (9) penetrate through the end part of the sector gear (5) to be connected to the valve plate (2) to be locked or penetrate through the valve plate (2) to be connected to the end part of the sector gear (5) to be locked.

5. A telescopically biased start vector seal valve according to claim 2, wherein: the outer end of the valve shaft (3) is rotatably connected with a fixed seat (12), and the fixed seat (12) is fixedly connected to the outside of the valve body (1).

6. A telescopically biased start vector seal valve according to claim 1, wherein: the vector sealing ring (4) and the valve body (1) are in transition or interference fit.

7. A telescopically biased start vector seal valve according to claim 1, wherein: the other half inner chamber of the valve body (1) is of a step hole structure, the outer end of the vector sealing ring (4) is provided with a flange plate (10), and the flange plate (10) is fastened on the valve body (1) by a second screw (21) after the vector sealing ring (4) is embedded into the step hole structure.

8. A telescopically biased start vector seal valve according to claim 5, wherein: a gap is kept between the inner end of the vector sealing ring (4) and the inner end of the step hole structure, and the gap is not more than 1 mm.

9. A telescopically biased start vector seal valve according to claim 1, wherein: the cylindrical surface of the limit pin (8) is provided with a roller.

10. A telescopically biased start vector seal valve according to claim 1, wherein: a convex anti-falling platform (20) is arranged at the small end of the valve body (1), the outer diameter of the convex anti-falling platform (20) is larger than the inner diameter of the telescopic lantern ring (17), and the telescopic lantern ring (17) is of a two-half separated structure or is provided with an opening.

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