CN115325196A

CN115325196A - Ball valve based on leak protection treatment process

Info

Publication number: CN115325196A
Application number: CN202210787338.0A
Authority: CN
Inventors: 黄存信; 余胜洁; 季新乐
Original assignee: Zhejiang Anchor Control Valve Technologies Co ltd
Current assignee: Zhejiang Anchor Control Valve Technologies Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-11-11

Abstract

The invention provides a ball valve based on a leak-proof treatment process, which belongs to the technical field of ball valves and comprises a first valve body, a second valve body and a ball body, wherein the first valve body and the second valve body are connected to form a cavity for accommodating the ball body; in the long-term use process of the ball valve, the valve seat or the sealing surface of the ball body is abraded, the adjusting ball can be pushed by the adjusting screw rod, and then the adjusting seat is pushed by the adjusting ball, so that the valve seat and the ball body form effective sealing again, the valve seat does not need to be frequently replaced, meanwhile, the sealing ring of the ball body is fixed by the fixing ring, if the ball valve is abraded, the sealing ring and the sealing ring can be timely replaced, and the service life of the ball valve can be greatly prolonged.

Description

Ball valve based on leak protection treatment process

Technical Field

The invention relates to the technical field of ball valves, in particular to a ball valve based on a leakage-proof treatment process.

Background

Ball valve, the open-close piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. The hard seal V-shaped ball valve can also be used for regulating and controlling fluid, wherein a V-shaped ball core of the hard seal V-shaped ball valve and a metal valve seat of the build-up welding hard alloy have strong shearing force, and the hard seal V-shaped ball valve is particularly suitable for media containing fibers, tiny solid particles and the like. The multi-way ball valve can flexibly control the confluence, the diversion and the switching of the flow direction of the medium on the pipeline, and can close any channel to connect the other two channels. The valve of this type should be generally installed horizontally in the pipeline. The ball valve is divided into the following parts according to the driving mode: pneumatic ball valves, electric ball valves, manual ball valves.

In long-term use of the ball valve in the prior art, a sealing pair between the ball body and the valve seat can cause abrasion under the condition of medium erosion and mutual friction, so that sealing failure is caused, medium leakage is caused, a plurality of sealing rings are generally stacked in the current stuffing box, and the sealing effect is general.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a ball valve based on a leak-proof treatment process.

The technical scheme adopted by the invention is as follows: the utility model provides a ball valve based on leak protection processing technology, includes first valve body, second valve body and spheroid, first valve body and the cavity that the second valve body is connected and constitutes the confession spheroid holding, all be provided with valve seat subassembly in first valve body and the second valve body, valve seat subassembly includes mount pad, disk seat and regulation seat, the circumferential distribution has a plurality of regulation chambeies in the mount pad, be provided with the adjusting ball in the regulation intracavity, the regulation seat is located between mount pad and the disk seat and is provided with first thrust face, adjusting ball and first thrust face looks butt, be provided with the first regulation hole that corresponds quantity with the regulation chamber on the mount pad with regulation chamber looks vertically terminal surface circumference, all be provided with the second regulation hole that is linked together with first regulation hole on first valve body and the second valve body, the intercommunication be provided with adjusting screw in first regulation hole and the second regulation hole, adjusting screw is provided with the second thrust face towards adjusting ball one end, the second thrust face looks butt with adjusting ball, adjusting screw is located the regulation downthehole removal through second thrust face promotion adjusting ball at the regulation intracavity, thereby is provided with the second thrust face fixed mounting groove, the second thrust face is provided with the second fixed mounting groove, thereby it is provided with the fixed ring to make the spheroid.

At least two sealing parts are arranged at the connecting positions of the mounting seat, the first valve body and the second valve body, which are close to the cavity.

An elastic cushion is arranged between the adjusting seat and the valve seat and is arranged at the position where the adjusting seat is in push fit with the valve seat.

And a plurality of elastic sealing gaskets are arranged between the valve seat and the first valve body as well as between the valve seat and the second valve body.

The protective cover is all installed to the terminal surface that sets up the second regulation hole on first valve body and the second valve body, the protective cover includes first lid and second lid, first lid and second lid just all articulate or bolted connection with first valve body or second valve body.

First mounting groove one side is provided with the spacing groove that supplies embedding of sealing ring one side, gu fixed ring one side support the sealing ring and with pass through bolted connection between the spheroid.

The utility model discloses a ball valve, including spheroid upper end, first valve body and valve rod, be provided with the packing box between spheroid upper end, the packing box is from top to bottom including packing gland, first spring, seal assembly and second spring in proper order, seal assembly includes a plurality of two lip sealing rings, and is provided with the elastic sealing circle between per two lip sealing rings, seal assembly passes through fixed subassembly and installs between first spring and second spring, fixed subassembly is including fixed cover, first spacer ring and second spacer ring, but first spacer ring and second spacer ring fixed relatively cover slide from top to bottom.

The inner wall of the fixed sleeve is provided with a sliding groove, and sliding blocks matched with the sliding groove are arranged on the first spacing ring and the second spacing ring.

The first valve body is provided with a connecting sleeve, the connecting sleeve is connected with an actuating mechanism,

the first valve body is connected with the second valve body through bolts, and a sealing ring is arranged at the joint of the first valve body and the second valve body.

The invention has the following beneficial effects:

1. in the long-term use process of the ball valve, the valve seat or the sealing surface of the ball body is abraded, the adjusting ball can be pushed through the adjusting screw rod, then the adjusting seat is pushed through the adjusting ball, so that the valve seat and the ball body can form effective seal again, the valve seat does not need to be frequently replaced, meanwhile, the sealing ring of the ball body is fixed through the fixing ring, if the ball valve is abraded, the sealing ring and the sealing ring can be replaced in time, and the service life of the ball valve can be greatly prolonged through cooperation of the sealing ring and the fixing ring.

2. The valve seat can be adjusted from the outside of the valve body under the condition that the valve body is not disassembled, and the valve seat is convenient, quick and high in practicability.

3. The packing box limits the sealing assembly through the fixing assembly, forms a whole body, is convenient to assemble, is provided with the first spring and the second spring to form elastic sealing, is provided with the elastic sealing ring between every two double-lip sealing rings, and can be propped against the lip openings of the double-lip sealing rings due to deformation generated when the elastic sealing rings are extruded, so that the double-lip sealing rings are tightly attached to the valve rod, and the sealing effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.

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

FIG. 2 is an enlargement of FIG. 1 at A;

FIG. 3 is an enlargement at B of FIG. 1;

FIG. 4 is a three-dimensional schematic of a stuffing box according to the present invention;

in the figure, 1-a first valve body, 2-a second valve body, 3-a ball body, 31-a first installation groove, 32-a second installation groove, 33-a sealing ring, 34-a fixing ring, 4-a cavity, 5-a valve seat component, 501-a mounting seat, 502-a valve seat, 503-an adjusting seat, 504-an adjusting cavity, 505-an adjusting ball, 506-a first pushing surface, 507-a first adjusting hole, 508-a second adjusting hole, 509-an adjusting screw, 510-a second pushing surface, 511-a sealing member, 512-a sealing member, 513-an elastic sealing gasket, 514-an elastic sealing gasket, 6-a valve rod, 7-a packing box, 71-a packing gland, 72-a first spring, 73-a sealing component, 731-a double-lip sealing ring, 732-an elastic connecting sleeve, 74-a second spring, 75-a fixing component, 751-a fixing sleeve, 752-a first spacer ring, 753-a second spacer ring, 754-a sliding groove, 755-a sliding block, 8-an actuating mechanism, 9-an actuating mechanism and a 10-a sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are only used for convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and this is not described in any one embodiment in the following embodiments.

The terms of direction and position of the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the present invention is provided:

the utility model provides a ball valve based on leak protection processing technology, includes first valve body 1, second valve body 2 and spheroid 3, first valve body 1 is connected with second valve body 2 and constitutes the cavity 4 that supplies the holding of spheroid 3, adopts the structure of two valve body combinations, the dismouting and the maintenance of being convenient for, all be provided with valve seat subassembly 5 in first valve body 1 and the second valve body 2, valve seat subassembly 5 includes mount pad 501, valve seat 502 and regulation seat 503, the circumferential distribution has a plurality of regulation chambeies 504 in the mount pad 501, generally can be six or eight, every be provided with regulation ball 505 in the regulation chamber 504, it is located between mount pad 501 and the valve seat 502 and is provided with first push surface 506 to adjust the seat 503, every regulation ball 505 all with first push surface 506 looks butt joint, be provided with the first regulation hole 507 of the corresponding quantity with regulation chamber 504 with the terminal surface circumference of regulation chamber 504 looks vertically on the mount pad 501, all be provided with the second regulation hole 508 that is linked together with first regulation hole 507 on first valve body 1 and the second valve body 2, the first regulation hole 508 that communicates is provided with second valve body 509 and the regulation screw rod 508 that the regulation hole 509 can be provided with the regulation screw rod 508 under the circumstances swiftly adjusting, the regulation screw rod is provided with the regulation hole, the regulation screw rod 507 and the regulation screw rod 508 of taking apart the circumstances outside the practicality is strong and the second valve body is strong and the regulation hole 508 of adjusting the practicality is strong.

The adjusting screw 509 is provided with a second pushing surface 510 towards one end of the adjusting ball 505, the second pushing surface 510 abuts against the adjusting ball 505, the adjusting screw 509 is located in the first adjusting hole 507 and the second adjusting hole 508 which are communicated, the adjusting ball 505 can be pushed to move towards the first pushing surface 506 in the adjusting cavity 504 through the second pushing surface 510, so that the first pushing surface 506 is pushed to enable the valve seat 502 to move towards the ball 3, when the ball valve is used for a long time, the sealing surface of the valve seat or the ball is worn, the adjusting screw 509 can be rotated to push the adjusting ball 505, and the adjusting ball 505 pushes the adjusting seat 503, so that the valve seat 502 and the ball 3 form effective sealing again, the valve seat 502 does not need to be frequently replaced, and the service life of the ball valve can be prolonged.

The surface of the ball body 3 is provided with a first installation groove 31 and a second installation groove 32 which are stepped, a sealing ring 33 is arranged in the first installation groove 31, and a fixing ring 34 for fixing the sealing ring 33 is arranged in the second installation groove 32; in the use, if there is wearing and tearing but in time change, the dismouting is very convenient, only needs to unpack first valve body 1 and second valve body 2 apart, can change the sealing ring 33 of its both sides through rotatory spheroid 3.

The mounting seat 501 and the first valve body 1 and the second valve body 2 are close to the connecting part of the cavity 4, at least two sealing pieces 511 are arranged at the connecting part, in this embodiment, two sealing grooves are arranged on the mounting seat 501, sealing pieces are arranged in the sealing grooves, the sealing performance of the connecting part of the valve body and the mounting seat 501 is improved, and the medium overflow is avoided.

An elastic pad 512 is arranged between the adjusting seat 503 and the valve seat 502, and the elastic pad 512 is arranged at the push fit position of the adjusting seat 503 and the valve seat 502, so that abrasion between the adjusting seat 503 and the valve seat 502 due to extrusion force in the adjusting process is reduced, and when the valve seat 502 is in sealing fit with the ball 3, certain elastic compensation can be provided, the sealing performance is improved, and the loss of a sealing pair is reduced.

Be provided with a plurality of elastic sealing gasket 513 between valve seat 502 and first valve body 1 and the second valve body 2, a plurality of elastic sealing gasket 513 are extruded between valve seat 502 and first valve body 1 and second valve body 2, also can provide certain elastic compensation, can also be after adjusting simultaneously, and valve seat 502 antedisplacement, the elastic sealing gasket 513 that is in compression state originally can stretch, guarantees the sealed of junction, avoids the medium to spill over, and wherein elastic sealing gasket 513 can adopt the V-arrangement sealing washer.

Protective cover 514 is all installed to the terminal surface that sets up second regulation hole 508 on first valve body 1 and the second valve body 2, the protective cover includes first lid and second lid, first lid and second lid and first valve body 1 or second valve body 2 are articulated or bolted connection, and is specific, structure one: a first cover body and a second cover body are arranged on the end face of the first valve body 1 provided with the second adjusting hole 508 and are hinged with the first valve body 1, and the opening and closing directions of the first cover body and the second cover body are left and right opened and closed relative to the first valve body 1, so that the problem that the protective cover 514 is inconvenient to open after the ball valve is installed is solved, meanwhile, the first cover body and the second cover body are provided with locking structures which can be in snap fit, and the upper structure of the second valve body 2 is the same; the structure II is as follows: a first cover body and a second cover body are arranged on the end face of the first valve body 1 provided with the second adjusting hole 508 and are connected with the first valve body 1 through bolts, a plurality of threaded holes can be arranged on the end face or the circumferential side wall of the first valve body 1 provided with the second adjusting hole 508 for connection, a sealing structure, such as a sealing ring, is further arranged on the first cover body and the second cover body, and the structure of the second valve body 2 is the same; by providing the protective cover 514, the sealing performance can be improved, and the influence of environmental factors on the adjusting screw 509 can be reduced.

First mounting groove 31 one side is provided with the spacing groove that supplies sealing ring 33 one side embedding, gu fixed ring 34 one side support sealing ring 33 and with through bolted connection between the spheroid 3, sealing ring 33 is reliable with spheroid 3 firm in connection, and easy dismounting.

The upper end of the sphere 3 is connected with a valve rod 6, in the embodiment, the upper end of the sphere 3 is provided with a connecting groove for inserting the lower end of the valve rod 6, the bottom of the connecting groove is provided with a threaded through hole, the end face of the valve rod 6 is also provided with a corresponding threaded hole, after the lower end of the valve rod 6 is inserted into the connecting groove, the threaded through hole is aligned with the threaded hole, a bolt can be upwards installed from the channel part of the sphere 3, and the valve rod 6 is fixed with the sphere.

Be provided with packing box 7 between first valve body 1 and the valve rod 6, packing box 7 is from top to bottom including packing gland 71, first spring 72, seal assembly 73 and second spring 74 in proper order, seal assembly 73 includes a plurality of lips sealing washer 731, and is provided with elastic seal ring 732 between per two lips sealing washer 731, seal assembly 73 passes through fixed subassembly 75 to be installed between first spring and 72 second spring 74, fixed subassembly 75 is including fixed cover 751, first spacer ring 752 and second spacer ring 753 can relatively fixed cover 751 slide from top to bottom. The stuffing box 7 limits the sealing component 73 through the fixing component 75 and forms a whole body for convenient assembly, and is provided with a first spring 72 and a second spring 74 to form elastic sealing, the lower end of the first spring 72 is propped against the upper end surface of a first spacer ring 752, the upper end of the second spring 74 is propped against the lower end surface of a second spacer ring 753, and elastic compensation is provided for the middle sealing component 73; meanwhile, an elastic sealing ring 732 is arranged between every two double-lip sealing rings 731, when the elastic sealing ring 732 is extruded, the elastic sealing ring 732 deforms and can be abutted to the lip opening of the double-lip sealing ring 731, so that the double-lip sealing ring 731 is tightly attached to the valve rod 6, and the sealing effect is improved.

The inner wall of the fixed sleeve 751 is provided with a sliding groove 754, the first spacer ring 752 and the second spacer ring 753 are provided with sliding blocks 755 matched with the sliding groove 754, the assembly is simple, and the sealing assembly 73 can be limited to form a whole to be installed in the stuffing box 7.

The first valve body 1 is provided with a connecting sleeve 8, the connecting sleeve 8 is connected with an actuating mechanism 9, the actuating mechanism 9 can adopt pneumatic, electric and the like, and the details are not given for the prior art.

First valve body 1 and second valve body 2 pass through bolted connection and are provided with sealing washer 10 in the junction, promote the sealing performance between first valve body 1 and the second valve body 2, preferentially adopt metal winding gasket, extension valve life.

The assembly method of the ball valve comprises the following steps:

a. the sealing piece 511 is mounted on the two mounting seats 501, and then is mounted in the first valve body 1 and the second valve body 2 respectively, and the first adjusting hole 507 is aligned with the second adjusting hole 508;

b. screwing an adjusting screw 509 into a first adjusting hole 507 and a second adjusting hole 508 which are aligned in installation, and fixing the installation seat 501 with the first valve body 1 and the second valve body 2 respectively;

c. adjusting balls 505 are respectively arranged in adjusting cavities 504 in the two installation seats 501, an adjusting seat 503 and a valve seat 502 are sequentially arranged, an elastic gasket 512 is arranged between the adjusting seat 503 and the valve seat 502, and a plurality of elastic gaskets 513 are arranged between the valve seat 502 and the first valve body 1 and the second valve body 2;

d. installing the sealing ring 33 into the first installation groove 31, then connecting the fixing ring 34 with the second installation groove 32 through bolts, so that the sealing ring 33 is fixed in the first installation groove 31, the ball body 3 is installed in the cavity 4, the valve rod 6 and the related rotating bearing and the like are installed in the first valve body 1, and the lower end of the valve rod 6 is connected with the ball body 3;

e. assembling the sealing assembly 73 and the fixing assembly 75, firstly installing the second spacer ring 753 into the fixing sleeve 751, then installing the sealing assembly 73 into the fixing sleeve 751, and then installing the first spacer ring 752 into the fixing sleeve 751 so that the sealing assembly 73 is positioned between the first spacer ring 752 and the second spacer ring 753;

f. the stuffing box 7 is filled with the second spring 74, then the assembled sealing assembly 73 and the fixing assembly 75 are filled, then the first spring 72 is filled, and finally the stuffing gland 71 is installed;

g. connecting a first valve body 1 and a second valve body 2 through bolts, and installing a sealing ring 10 between the first valve body and the second valve body;

h. a connecting sleeve 8 is arranged on the first valve body 1, and an actuating mechanism 9 is arranged on the connecting sleeve 8.

The whole assembling process is simple to operate and clear in steps, and station assembling can be independently set for assembling the ball 3, the sealing ring 33 and the fixing ring 34 and assembling the sealing component 73 and the fixing component 75, so that assembling efficiency is improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims

1. A ball valve based on a leakage-proof treatment process comprises a first valve body (1), a second valve body (2) and a ball body (3), wherein the first valve body (1) and the second valve body (2) are connected to form a cavity (4) for accommodating the ball body (3), the ball valve is characterized in that valve seat assemblies (5) are arranged in the first valve body (1) and the second valve body (2), each valve seat assembly (5) comprises an installation seat (501), a valve seat (502) and an adjusting seat (503), a plurality of adjusting cavities (504) are circumferentially distributed in the installation seat (501), adjusting balls (505) are arranged in the adjusting cavities (504), the adjusting seats (503) are located between the installation seat (501) and the valve seat (502) and are provided with first pushing surfaces (506), adjusting ball (505) and first push face (506) looks butt, be provided with on mount pad (501) with adjusting chamber (504) looks vertically terminal surface circumference and adjust chamber (504) first regulation hole (507) of corresponding quantity, all be provided with on first valve body (1) and the second valve body (2) second regulation hole (508) that are linked together with first regulation hole (507), the intercommunication be provided with adjusting screw (509) in first regulation hole (507) and the second regulation hole (508), adjusting screw (509) are provided with the second push face towards adjusting ball (505) one end (510) The second pushing surface (510) is abutted to the adjusting ball (505), the adjusting screw (509) is located in the communicated first adjusting hole (507) and the second adjusting hole (508) and can push the adjusting ball (505) to move towards the first pushing surface (506) in the adjusting cavity (504) through the second pushing surface (510), so that the first pushing surface (506) is pushed to enable the valve seat (502) to move towards the ball body (3), the surface of the ball body (3) is provided with a first installation groove (31) and a second installation groove (32) which are stepped, a sealing ring (33) is arranged in the first installation groove (31), and a fixing ring (34) used for fixing the sealing ring (33) is arranged in the second installation groove (32).

2. A ball valve based on leak-proof treatment process according to claim 1, characterized in that the mounting seat (501) and the junction of the first valve body (1) and the second valve body (2) close to the cavity (4) are provided with at least two seals (511).

3. A ball valve based on leak-proof treatment process according to claim 1, characterized in that an elastic pad (512) is arranged between the adjusting seat (503) and the valve seat (502), and the elastic pad (512) is arranged at the position where the adjusting seat (503) and the valve seat (502) are in push fit.

4. A ball valve based on leak-proof process according to claim 1, characterized in that several elastic sealing gaskets (513) are arranged between the valve seat (502) and the first (1) and second (2) valve bodies.

5. The ball valve based on the leak-proof treatment process is characterized in that the end surfaces of the first valve body (1) and the second valve body (2) provided with the second adjusting hole (508) are respectively provided with a protecting cover (514), the protecting covers comprise a first cover body and a second cover body, and the first cover body is hinged or bolted with the second cover body and the first valve body (1) or the second valve body (2).

6. The ball valve based on the leakproof processing technology is characterized in that one side of the first mounting groove (31) is provided with a limiting groove for embedding one side of the sealing ring (33), and one side of the fixing ring (34) is abutted against the sealing ring (33) and is connected with the ball body (3) through a bolt.

7. The ball valve based on the leak-proof treatment process as claimed in claim 1, wherein a valve rod (6) is connected to the upper end of the ball body (3), a stuffing box (7) is arranged between the first valve body (1) and the valve rod (6), the stuffing box (7) sequentially comprises a stuffing gland (71), a first spring (72), a sealing assembly (73) and a second spring (74) from top to bottom, the sealing assembly (73) comprises a plurality of double-lip sealing rings (731), an elastic sealing ring (732) is arranged between every two double-lip sealing rings (731), the sealing assembly (73) is installed between the first spring and the second spring (72) through a fixing assembly (75), the fixing assembly (75) comprises a fixing sleeve (751), a first spacer ring (752) and a second spacer ring (753), and the first spacer ring (752) and the second spacer ring (753) can slide up and down relative to the fixing sleeve (751).

8. The ball valve based on the leak-proof treatment process as claimed in claim 7, wherein the inner wall of the fixing sleeve (751) is provided with a sliding groove (754), and the first and second distance rings (752, 753) are provided with a sliding block (755) which is matched with the sliding groove (754).

9. The ball valve based on the leak-proof treatment process is characterized in that a connecting sleeve (8) is arranged on the first valve body (1), and an actuating mechanism (9) is connected to the connecting sleeve (8).

10. A ball valve based on leak-proof treatment process according to claim 1, characterized in that the first valve body (1) and the second valve body (2) are connected by bolts and are provided with a sealing ring (10) at the joint.