CN210830488U

CN210830488U - Prevent bellows structure governing valve of outer leakage

Info

Publication number: CN210830488U
Application number: CN201921160592.8U
Authority: CN
Inventors: 董娜
Original assignee: Linke Fluid Equipment Dalian Co Ltd
Current assignee: Linke Fluid Equipment Dalian Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-06-23
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a prevent bellows structure governing valve of outer hourglass, which comprises a valve seat, the valve gap, support frame and actuating mechanism, the support frame is installed to the actuating mechanism bottom, the inside top of support frame is equipped with the actuating lever, the fixed loop bar that has cup jointed in actuating lever bottom, the support frame bottom is through flange joint valve gap, be equipped with the case between the water inlet of disk seat and the delivery port junction, the case is connected the valve rod, the valve rod extends to the valve gap and is connected with stable loop bar, the valve rod outside in the valve gap cup joints and is equipped with the bellows, bellows top in the valve gap is equipped with seal assembly, seal assembly is including cup jointing the valve rod nut in the valve rod, be equipped with the stopping pad between valve rod nut top and the valve gap inner wall, the valve rod nut bottom of valve rod is equipped with disc spring, the disc spring bottom of, The butterfly spring and the packing pressing sleeve effectively buffer impact force, reduce abrasion and prevent leakage in the process of rotating the valve rod.

Description

Prevent bellows structure governing valve of outer leakage

Technical Field

The utility model relates to a governing valve technical field specifically is a prevent bellows structure governing valve of outer hourglass.

Background

The valve is a control part in a fluid conveying system and has the functions of diversion, interception, regulation, throttling, backflow prevention, diversion or overflow pressure relief and the like. Valves using bellows as the sealing element for the valve stem are often used in applications where tight valve stem sealing is required, such as in high vacuum applications and in the nuclear industry. The corrugated pipe is used to replace stuffing box in common valve or to combine with stuffing box. But its simple structure of present bellows structure governing valve, the dynamic seal department of valve rod all uses the filler, but because the long-time rotation of valve, these fillers can and the valve rod between wearing and tearing more and more gradually, cause some liquid of carrying to directly leak out through the gap of wearing and tearing, sealing performance is relatively poor, can cause the raw materials extravagant moreover, influence the life of governing valve, in order to solve above-mentioned problem, consequently, design a bellows structure governing valve that prevents leaking outward.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent bellows structure governing valve of outer hourglass to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a corrugated pipe structure adjusting valve capable of preventing leakage comprises a valve seat, a valve cover, a supporting frame and an executing mechanism, wherein the supporting frame is fixedly installed at the bottom of the executing mechanism, a driving rod is arranged at the top end inside the supporting frame, a stable loop bar is fixedly sleeved at the bottom of the driving rod, the bottom of the supporting frame is connected with the top of the valve cover through a connecting flange, a water inlet and a water outlet are respectively arranged at two sides inside the valve seat, a valve core is arranged between the connection part of the water inlet and the water outlet of the valve seat, the valve core is connected with a valve rod, the valve rod extends to the valve cover and is connected with the stable loop bar, a corrugated pipe is sleeved outside the valve rod in the valve cover, a sealing assembly is arranged at the top of the corrugated pipe in the valve cover, the sealing assembly comprises a valve rod nut sleeved on, and the bottom of the belleville spring of the valve rod is sleeved with a packing pressing sleeve.

Furthermore, a first sealing gasket is arranged on the side face of the top of the valve core, a second sealing gasket is arranged on the inner wall of one side of the valve seat, which is parallel to the first sealing gasket of the valve core, and a compression spring is fixedly connected between the second sealing gasket and the first sealing gasket.

Furthermore, the top end of the outer part of the valve seat is connected with the bottom of the valve cover through a connecting flange.

Further, the actuating mechanism is a hand wheel.

Furthermore, a precision sealing ring is fixedly arranged on the inner bottom side surface of the valve cover.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model effectively buffers the impact force, reduces the abrasion and prevents the leakage in the process of rotating the valve rod by arranging the stopping pad, the valve rod nut, the disc spring and the packing pressing sleeve in the sealing component, and the valve rod nut compresses the sealing structure to further prevent the leakage; through the setting of the first seal gasket and the second seal gasket that set up between case and valve rod, carry out double seal to the valve gap when opening the valve, prevent the seepage, avoid the damage to the inside spare part of valve gap, sealed effect is better, and compression spring's setting is along with the compression of can stretching of upper and lower rotation, convenient to use operation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the sealing assembly of the present invention;

fig. 3 is a schematic structural view of the first sealing gasket and the second sealing gasket of the present invention.

In the figure: 1. a valve seat; 2. a water inlet; 3. a valve core; 4. a valve stem; 5. a bellows; 6. a seal assembly; 7. Stabilizing the loop bar; 8. a drive rod; 9. an actuator; 10. a support frame; 11. a valve cover; 12. a connecting flange; 13. a water outlet; 14. a backstop pad; 15. a valve stem nut; 16. a belleville spring; 17. pressing and sleeving the filler; 18. A first sealing gasket; 19. a compression spring; 20. a second sealing gasket.

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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a corrugated pipe structure adjusting valve capable of preventing leakage comprises a valve seat 1, a valve cover 11, a support frame 10 and an executing mechanism 9, wherein the support frame 10 is fixedly installed at the bottom of the executing mechanism 9, a driving rod 8 is arranged at the top end inside the support frame 10, a stabilizing loop bar 7 is fixedly sleeved at the bottom of the driving rod 8, the bottom of the support frame 10 is connected with the top of the valve cover 11 through a connecting flange 12, a water inlet 2 and a water outlet 13 are respectively arranged at two sides inside the valve seat 1, a valve core 3 is arranged between the joints of the water inlet 2 and the water outlet 13 of the valve seat 1, the valve core 3 is connected with a valve rod 4, the valve rod 4 extends to the valve cover 11 and is connected with the stabilizing loop bar 7, a corrugated pipe 5 is sleeved outside the valve rod 4 inside the valve cover 11, a sealing assembly 6 is arranged at the top of, a stopping pad 14 is arranged between the top of the valve rod nut 15 and the inner wall of the valve cover 11, a belleville spring 16 is sleeved at the bottom of the valve rod nut 15 of the valve rod 4, and a packing pressing sleeve 17 is sleeved at the bottom of the belleville spring 16 of the valve rod 4.

Furthermore, a first sealing gasket 18 is arranged on the top side surface of the valve core 3, a second sealing gasket 20 is arranged on the inner wall of one side of the valve seat 1 parallel to the first sealing gasket 18 of the valve core 3, and a compression spring 19 is fixedly connected between the second sealing gasket 20 and the first sealing gasket 18.

Further, the top end of the outer part of the valve seat 1 is connected with the bottom of the valve cover 11 through a connecting flange 12.

Further, the actuator 9 is a hand wheel.

Furthermore, a precision sealing ring is fixedly arranged on the inner bottom side surface of the valve cover 11.

The working principle is as follows: the utility model comprises a valve seat 1, a valve core 3, a valve rod 4, a corrugated pipe 5, a stable loop bar 7, a driving rod 8, an actuating mechanism 9, a supporting frame 10, a valve cover 11, a connecting flange 12, a retaining pad 14, a valve rod nut 15, a belleville spring 16, a packing pressing sleeve 17, a first sealing gasket 18, a compression spring 19 and a second sealing gasket 20, all of which are universal standard parts or parts known by technicians in the field, the structure and the principle of the utility model can be known by technical manuals or conventional experimental methods, the utility model solves the problems that the prior regulating valve with the corrugated pipe structure has poor sealing effect and is easy to leak due to abrasion after long-term use, through the arrangement of the related structure of the sealing component 6, the impact force is effectively buffered in the process of rotating the valve rod 4, the abrasion is reduced, and the leakage is prevented; the valve rod nut 15 compresses the sealing structure to further prevent leakage; through the setting of first seal gasket 18, compression spring 19, second seal gasket 20, carry out double seal to valve gap 11 when opening the valve, prevent that the seepage from getting into, avoid the damage to the inside spare part of valve gap 11, sealed effect is better, and compression, convenient to use operation can be stretched along with the rotation from top to bottom to case 3 to compression spring 19's setting.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent bellows structure governing valve of hourglass, includes disk seat (1), valve gap (11), support frame (10) and actuating mechanism (9), its characterized in that, actuating mechanism (9) bottom fixed mounting has support frame (10), the inside top of support frame (10) is equipped with actuating lever (8), actuating lever (8) bottom fixed cover has been cup jointed and has been stabilized loop bar (7), support frame (10) bottom is through flange (12) connection valve gap (11) top, disk seat (1) inside both sides are equipped with water inlet (2) and delivery port (13) respectively, be equipped with case (3) between the water inlet (2) of disk seat (1) and delivery port (13) junction, case (3) connection valve rod (4), valve rod (4) extend to valve gap (11) and with stabilize loop bar (7) and be connected, valve rod (4) the inside valve gap (11) outside cup joints and is equipped with bellows (5), bellows (5) top in valve gap (11) is equipped with seal assembly (6), seal assembly (6) are including cup jointing in valve rod nut (15) of valve rod (4), be equipped with between valve rod nut (15) top and valve gap (11) inner wall stopping pad (14), valve rod nut (15) bottom of valve rod (4) cup joint and are equipped with belleville spring (16), belleville spring (16) bottom of valve rod (4) cup joints and is equipped with packing and presses cover (17).

2. The leak-proof bellows structure regulator valve according to claim 1, wherein: the top side surface of the valve core (3) is provided with a first sealing gasket (18), the inner walls of one sides of the valve seat (1) and the valve core (3), which are parallel to the first sealing gasket (18), are provided with a second sealing gasket (20), and a compression spring (19) is fixedly connected between the second sealing gasket (20) and the first sealing gasket (18).

3. The leak-proof bellows structure regulator valve according to claim 1, wherein: the top end of the outer part of the valve seat (1) is connected with the bottom of the valve cover (11) through a connecting flange (12).

4. The leak-proof bellows structure regulator valve according to claim 1, wherein: the actuating mechanism (9) is a hand wheel.

5. The leak-proof bellows structure regulator valve according to claim 1, wherein: and a precision sealing ring is fixedly arranged on the inner bottom side surface of the valve cover (11).