CN212616469U

CN212616469U - Composite sealing ball valve with good sealing effect

Info

Publication number: CN212616469U
Application number: CN202021447558.1U
Authority: CN
Inventors: 郭丽
Original assignee: SICHUAN KAITZ VALVE Manufacturing CO LTD
Current assignee: SICHUAN KAITZ VALVE Manufacturing CO LTD
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-26
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a sealed effectual compound seal ball valve, including casing and valve rod, the casing left and right sides is provided with the conveyer pipe, and the casing is connected with the conveyer pipe through first ring flange, inside opening and the recess of having seted up of casing, and the recess is seted up in the inside left side of casing, and the opening runs through the casing right side simultaneously, the inside first disk seat that is provided with of recess, and first disk seat right side is provided with first rubber seal, the inside left side of opening is provided with the case, and the inside right side of opening is provided with the second disk seat. This sealed effectual compound seal ball valve is provided with first disk seat, second disk seat, first rubber seal and second rubber seal, obtains the sealed effect of more stable efficient through compound sealed mode, has solved the easy problem of wearing and tearing metal-enclosed surface of tiny solid particle in the oil gas through first rubber seal and second rubber seal simultaneously, has improved the life of ball valve.

Description

Composite sealing ball valve with good sealing effect

Technical Field

The utility model relates to a ball valve technical field specifically is a sealed effectual composite seal ball valve.

Background

The ball valve is a commonly used switch valve for the flow direction of medium in the control and distribution pipeline, current ball valve usually reaches sealed effect through the accurate cooperation between the metal covering, but in the in-service use discovery, tiny solid particle in the oil gas gets into the clearance between two metal covers easily, take place the friction between tiny solid particle and the metal cover afterwards, lead to the clearance increase between two metal covers, make the life of current ball valve not long, and the valve rod of current ball valve uses the filler to seal usually, but for the convenience rotate the valve rod, make the degree of packing tight limited, then influence the sealed effect to the valve rod, especially when rotating the valve rod, the filler distortion warp, make the inside oil gas of ball valve leak easily, to above-mentioned problem, need improve current equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealed effectual compound seal ball valve, with the current ball valve that proposes in solving above-mentioned background art reach sealed effect through the accurate cooperation between the metal covering usually, but discover in the in-service use, tiny solid particle in the oil gas gets into the clearance between two metal front covers easily, take place the friction between tiny solid particle and the metal front cover afterwards, lead to the clearance increase between two metal front covers, make the life of current ball valve not long, and the valve rod of current ball valve uses the filler to seal usually, nevertheless in order to rotate the valve rod, make the degree of packing tight limited, then influence the sealed effect to the valve rod, especially when rotating the valve rod, the filler distortion warp, make the inside oil gas of ball valve the problem of leaking easily.

In order to achieve the above object, the utility model provides a following technical scheme: a composite sealing ball valve with good sealing effect comprises a shell and a valve rod, wherein conveying pipes are arranged on the left side and the right side of the shell, the shell is connected with the conveying pipes through a first flange plate, an opening and a groove are formed in the shell, the groove is formed in the left side in the shell, the opening penetrates through the right side of the shell, a first valve seat is arranged in the groove, a first rubber sealing ring is arranged on the right side of the first valve seat, a valve core is arranged on the left side in the opening, a second valve seat is arranged on the right side in the opening, a second rubber sealing ring is arranged on the left side of the second valve seat, the lower end of the valve rod penetrates through the shell and is connected with a valve core spline, a push plate is welded on the outer side of the valve rod, a sealing hole is formed in the top of the shell, one side of the sliding ring, which is far away from the push plate, is provided with a rubber sealing gasket, a second flange plate is arranged above the shell, the second flange plate is arranged above the sealing hole, and vent holes are formed in the shell, the first valve seat, the second valve seat and the valve core in a penetrating mode.

Preferably, the central line of the vent hole in the casing, the central line of the vent hole in the first valve seat, the central line of the vent hole in the second valve seat and the central line of the vent hole in the valve core are all located on the same horizontal straight line.

Preferably, the diameter of the opening is larger than the diameter of the valve core.

Preferably, the left end of the valve core is attached to the right side of the first valve seat, and the right end of the valve core is attached to the left side of the second valve seat.

Preferably, the middle part of the valve rod is in threaded connection with the shell, and the upper side of the valve rod is in sliding connection with the second flange plate.

Preferably, the sliding rings and the rubber sealing gaskets are arranged in two numbers, and the two sliding rings and the two rubber sealing gaskets are arranged symmetrically by taking the push plate as the center.

Compared with the prior art, the beneficial effects of the utility model are that: the composite sealing ball valve with good sealing effect,

(1) the oil-gas composite sealing valve is provided with a first valve seat, a second valve seat, a first rubber sealing ring and a second rubber sealing ring, wherein the left end of the valve core is attached with the first rubber sealing ring, the right end of the valve core is attached with the second rubber sealing ring, the first rubber sealing ring and the second rubber sealing ring are matched to play a sealing role, when the left side pressure is increased, the pressure extrudes the valve core to enable the right side of the valve core to extrude the second rubber sealing ring until the second rubber sealing ring is deformed, so that the right end of the valve core is simultaneously attached with the second valve seat and the second rubber sealing ring to enable the second valve seat to play a metal sealing role, and similarly, when the right side pressure is increased, the first valve seat and the first rubber sealing ring are matched to seal the valve core, a more stable and efficient sealing effect is obtained in a composite sealing mode, and the problem that fine solid particles in, the service life of the ball valve is prolonged;

(2) be provided with the valve rod, push pedal and rubber packing pad, be threaded connection between valve rod and the casing, play certain sealed effect, rotate the valve rod, the valve rod drives the rotatory rising of push pedal, the push pedal promotes the sliding ring of upside and rises along sealed hole simultaneously, the sliding ring of upside and the rubber packing pad of second ring flange cooperation extrusion upside, and on the same hand, the reverse rotation valve rod, make the sliding ring of downside and the rubber packing pad of sealed hole bottom cooperation extrusion downside, improve the sealed effect to the valve rod when being convenient for rotate the valve rod, it has the practicality to use more.

Drawings

FIG. 1 is a schematic view of the cross-sectional structure of the present invention;

FIG. 2 is a schematic diagram of the right side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic left side view of the cross-sectional structure of the present invention;

fig. 4 is a schematic view of the main-view section explosion structure of the present invention.

In the figure: 1. the valve comprises a shell, 2, a conveying pipe, 3, a first flange plate, 4, an opening, 5, a groove, 6, a first valve seat, 7, a first rubber sealing ring, 8, a valve core, 9, a second valve seat, 10, a second rubber sealing ring, 11, a valve rod, 12, a push plate, 13, a sealing hole, 14, a sliding ring, 15, a rubber sealing gasket, 16, a second flange plate, 17 and an air vent.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a composite sealing ball valve with good sealing effect is disclosed, as shown in figure 1, figure 2 and figure 3, delivery pipes 2 are arranged on the left side and the right side of a shell 1, the shell 1 is connected with the delivery pipes 2 through a first flange plate 3, the central line of a vent hole 17 in the shell 1, the central line of a vent hole 17 in a first valve seat 6, the central line of a vent hole 17 in a second valve seat 9 and the central line of a vent hole 17 in a valve core 8 are all positioned on the same horizontal straight line, so that oil gas in the delivery pipe 2 on one side can enter the delivery pipe 2 on the other side through a plurality of vent holes 17, an opening 4 and a groove 5 are arranged in the shell 1, the groove 5 is arranged on the left side in the shell 1, the opening 4 penetrates through the right side of the shell 1, the diameter of the opening 4 is larger than that of the valve core 8, so, and 6 right sides of first disk seat are provided with first rubber seal 7, and the inside left side of opening 4 is provided with case 8, and the inside right side of opening 4 is provided with second disk seat 9, and the 9 left sides of second disk seat are provided with second rubber seal 10 simultaneously, and 8 left ends of case laminate 6 right sides of first disk seat, and 8 right-hand members of case laminate 9 left sides of second disk seat, and first disk seat 6 plays the effect of sealed case 8 with the cooperation of second disk seat 9.

As shown in fig. 1 and 4, the lower end of the valve rod 11 penetrates through the housing 1 to be splined with the valve core 8, a push plate 12 is welded on the outer side of the valve rod 11, the middle of the valve rod 11 is in threaded connection with the housing 1, the upper side of the valve rod 11 is in sliding connection with a second flange 16, so that the valve rod 11 can ascend or descend while rotating, a sealing hole 13 is formed in the top of the housing 1, the sealing hole 13 is formed in the outer side of the valve rod 11, sliding rings 14 are connected in the sealing hole 13 in a sliding manner, the sliding rings 14 are arranged on the upper side and the lower side of the push plate 12, the sliding rings 14 and the rubber gaskets 15 are arranged in two manners, the two sliding rings 14 and the two rubber gaskets 15 are symmetrically arranged with the push plate 12 as the center, the valve rod 11 ascends and pushes the push plate 12 at the same time, so that the sliding ring 14, the sliding ring 14 and the sealed hole 13 cooperation of downside extrude the sealed pad 15 of rubber of downside, and the sliding ring 14 is provided with the sealed pad 15 of rubber in the one side of keeping away from

push pedal

12, and 1 top of casing is provided with second ring flange 16, and second ring flange 16 sets up in sealed hole 13 top, and casing 1 is inside, first disk seat 6, second valve seat 9 and the inside air vent 17 that all runs through of case 8.

The working principle is as follows: when the composite sealing ball valve with good sealing effect is used, the first valve seat 6 is firstly placed in the groove 5, the valve core 8 is placed in the left side of the opening 4 through the right side of the opening 4, the second valve seat 9 is placed in the right side of the opening 4, the two sliding rings 14 and the two rubber sealing gaskets 15 are sleeved outside the valve rod 11, the valve rod 11 is rotated to enable the valve rod 11 to penetrate through the shell 1 to be connected with the valve core 8 through splines, meanwhile, the push plate 12, the two sliding rings 14 and the two rubber sealing gaskets 15 all slide into the sealing hole 13, the left side and the right side of the shell 1 are respectively connected with the conveying pipe 2 through the two first flange plates 3, at the moment, the right conveying pipe 2 extrudes the second valve seat 9, the first rubber sealing ring 7 on the right side of the first valve seat 6 is attached to the left side of the valve core 8, the second rubber sealing ring 10 on, when the ball valve needs to be closed, the valve rod 11 is rotated, the valve rod 11 drives the valve core 8 to rotate, so that the valve core 8 is matched with the first rubber sealing ring 7 and the second rubber sealing ring 10 to play a role in sealing the inside of the shell 1, when the left side pressure is higher, the valve core 8 is extruded under the action of the pressure, so that the valve core 8 extrudes the second rubber sealing ring 10, the second rubber sealing ring 10 deforms, the right end of the valve core 8 is convenient to be simultaneously attached to the second valve seat 9 and the second rubber sealing ring 10, the second valve seat 9 plays a role in sealing a metal cover, and similarly, when the right side pressure is higher, the left end of the valve core 8 is simultaneously attached to the first valve seat 6 and the first rubber sealing ring 7, a more efficient and stable sealing effect is obtained through a double-layer composite sealing mode, meanwhile, the first rubber sealing ring 7 and the second rubber sealing ring 10 play a role in blocking fine solid, the service life of the ball valve is prolonged, when the valve rod 11 rises rotationally, the push plate 12 is driven to rise rotationally, the push plate 12 is made to push the sliding ring 14 on the upper side to rise, the sliding ring 14 on the upper side and the second flange plate 16 are matched to extrude the rubber sealing gasket 15 on the upper side, similarly, when the ball valve needs to be opened, the valve rod 11 is rotated reversely, the push plate 12 descends rotationally, the push plate 12 pushes the sliding ring 14 on the lower side to descend, the sliding ring 14 on the lower side and the bottom of the sealing hole 13 are matched to extrude the rubber sealing gasket 15 on the lower side, the valve rod 11 and the shell 1 are connected in a threaded mode and are matched with the two rubber sealing gaskets 15 to seal the valve rod 11, the sealing effect is improved, the use is safer, and all work is finished.

The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the invention.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a sealed effectual compound seal ball valve, includes casing (1) and valve rod (11), its characterized in that: the conveying pipe (2) is arranged on the left side and the right side of the shell (1), the shell (1) is connected with the conveying pipe (2) through a first flange plate (3), an opening (4) and a groove (5) are formed in the shell (1), the groove (5) is formed in the left side of the interior of the shell (1), the opening (4) penetrates through the right side of the shell (1), a first valve seat (6) is arranged in the groove (5), a first rubber sealing ring (7) is arranged on the right side of the first valve seat (6), a valve core (8) is arranged on the left side of the interior of the opening (4), a second valve seat (9) is arranged on the right side of the interior of the opening (4), a second rubber sealing ring (10) is arranged on the left side of the second valve seat (9), the lower end of the valve rod (11) penetrates through the shell (1) and is connected with the valve core (8) in, casing (1) top has been seted up sealed hole (13), and sealed hole (13) set up in valve rod (11) outside, sealed hole (13) inside sliding connection has sliding ring (14), and sliding ring (14) set up both sides about push pedal (12), one side that push pedal (12) were kept away from in sliding ring (14) is provided with rubber packing pad (15), casing (1) top is provided with second ring flange (16), and second ring flange (16) set up in sealed hole (13) top, casing (1) inside, first disk seat (6), second disk seat (9) and case (8) inside all run through there are air vent (17).

2. The composite sealing ball valve with good sealing effect according to claim 1, characterized in that: the center line of the vent hole (17) in the shell (1), the center line of the vent hole (17) in the first valve seat (6), the center line of the vent hole (17) in the second valve seat (9) and the center line of the vent hole (17) in the valve core (8) are all located on the same horizontal straight line.

3. The composite sealing ball valve with good sealing effect according to claim 1, characterized in that: the diameter of the opening (4) is larger than that of the valve core (8).

4. The composite sealing ball valve with good sealing effect according to claim 1, characterized in that: the left end of the valve core (8) is attached to the right side of the first valve seat (6), and the right end of the valve core (8) is attached to the left side of the second valve seat (9).

5. The composite sealing ball valve with good sealing effect according to claim 1, characterized in that: the middle of the valve rod (11) is in threaded connection with the shell (1), and the upper side of the valve rod (11) is in sliding connection with the second flange plate (16).

6. The composite sealing ball valve with good sealing effect according to claim 1, characterized in that: the sliding rings (14) and the rubber sealing gaskets (15) are arranged in two numbers, and the two sliding rings (14) and the two rubber sealing gaskets (15) are symmetrically arranged by taking the push plate (12) as the center.