CN215257905U

CN215257905U - Sealing device for valve rod of gate valve

Info

Publication number: CN215257905U
Application number: CN202121237664.1U
Authority: CN
Inventors: 巫文安; 王碧春
Original assignee: Fujian Wilke Valve Manufacturing Co ltd
Current assignee: Fujian Wilke Valve Manufacturing Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-21
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a sealing device of gate valve rod, including the gate valve body, the gate valve body includes valve body, spheroid, valve rod and drive arrangement, the top intercommunication of valve body has first seal box, the bottom of first seal box inner chamber is provided with first solid fixed ring, the first spring of first solid fixed ring's top fixedly connected with, the first sealed pad of top fixedly connected with of first spring, the top fixedly connected with second seal box of first seal box, the bottom of second seal box inner chamber is provided with the sealed pad of second, the sealed top fixedly connected with second spring that fills up of second. The utility model discloses a gate valve body, spheroid, valve rod, first seal box, first solid fixed ring, first spring, first sealed pad, second seal box, the sealed pad of second, second spring and the solid fixed ring's of second cooperation are used, can be when opening or closing the gate valve body, make valve rod department remain fine leakproofness throughout.

Description

Sealing device for valve rod of gate valve

Technical Field

The utility model relates to a gate valve technical field specifically is a sealing device of gate valve rod.

Background

The gate valve is an opening and closing member flashboard, the direction of motion of flashboard is perpendicular mutually with the fluid direction, the gate valve only can be opened fully and closed entirely, can not do regulation and throttle, the gate valve seals through disk seat and flashboard contact, the sealed face can build-up welding metal material in order to increase the wearability usually, the flashboard has rigidity flashboard and elasticity flashboard, according to the difference of flashboard, the gate valve divide into rigidity gate valve and elasticity gate valve, but current gate valve is because valve rod department leakproofness is relatively poor, very easily the condition of infiltration appears in valve rod department, consequently, need improve the leakproofness of valve rod.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing device of gate valve rod possesses the good advantage of leakproofness, has solved current gate valve because valve rod department leakproofness is relatively poor, very easily appears the condition of infiltration in valve rod department, consequently need improve the problem of the leakproofness of valve rod.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a sealing device of gate valve rod, includes the gate valve body, the gate valve body includes valve body, spheroid, valve rod and drive arrangement, the top intercommunication of valve body has first seal box, the bottom of first seal box inner chamber is provided with first solid fixed ring, the first spring of first solid fixed ring's top fixedly connected with, the first sealed pad of top fixedly connected with of first spring, the top fixedly connected with second seal box of first seal box, the bottom of second seal box inner chamber is provided with the sealed pad of second, the sealed top fixedly connected with second spring that fills up of second, the solid fixed ring of top fixedly connected with second of second spring.

Preferably, the first sliding blocks are fixedly connected to two sides of the top of the sphere, and the first circular sliding groove matched with the first sliding blocks is formed in the bottom of the first fixing ring.

Preferably, the shape of first solid fixed ring, first sealed pad, the sealed pad of second and the solid fixed ring of second is the ring shape, the surface of valve rod is all located to first solid fixed ring, first sealed pad, the sealed pad of second and the solid fixed ring of second cover.

Preferably, the both sides of second seal box have all been seted up spacing spout, the equal fixedly connected with second slider in the both sides of the solid fixed ring of second, one side that the solid fixed ring of second was kept away from to the second slider extends to the inner chamber of spacing spout and with spacing spout swing joint.

Preferably, the top fixedly connected with stopper on valve rod surface, the equal fixedly connected with third slider in both sides of stopper bottom, the circular spout of second with third slider looks adaptation is seted up at the solid fixed ring's of second top.

Preferably, the first sealing gasket and the second sealing gasket are hard sealing gaskets, and the surfaces of the first spring and the second spring are coated with antirust paint.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a gate valve body, spheroid, valve rod, first seal box, first solid fixed ring, first spring, first sealed pad, second seal box, the sealed pad of second, the cooperation of second spring and the solid fixed ring of second is used, can make valve rod department remain fine leakproofness throughout when opening or closing the gate valve body, solved current gate valve because valve rod department leakproofness is relatively poor, very easily the condition of infiltration appears in valve rod department, consequently need improve the problem of the leakproofness of valve rod.

2. The utility model discloses a set up first slider and first circular spout, can make the rotation that the spheroid can be better when opening the gate valve body, through setting up spacing spout and second slider, make the solid fixed ring of second can be better reciprocate, through setting up stopper, third slider and the circular spout of second, can drive the sealed pad of second and move down when closing the gate valve body, through setting up anti rust coating, can prolong first spring and second spring life.

Drawings

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

FIG. 2 is a schematic view of the structure of the present invention;

fig. 3 is a schematic view of the internal structure of the second seal box of the present invention.

In the figure: 1. a gate valve body; 101. a valve body; 102. a sphere; 103. a valve stem; 2. a first seal box; 3. a first retaining ring; 4. a first spring; 5. a first gasket; 6. a second seal box; 7. a second gasket; 8. a second spring; 9. a second retaining ring; 10. a first slider; 11. a first circular chute; 12. a limiting chute; 13. a second slider; 14. a limiting block; 15. a third slider; 16. a second circular chute.

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 "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", 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 to be referred 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; 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 in specific cases to those skilled in the art.

The components adopted by the utility model are all universal standard components or components known by the technicians in the field, and the structure and the principle of the components are known by the technicians through technical manuals or conventional experimental methods.

Referring to fig. 1-3, a sealing device for a gate valve stem comprises a gate valve body 1, the gate valve body 1 includes a valve body 101, a ball 102, a stem 103 and a driving device, wherein both sides of the top of the ball 102 are fixedly connected with a first slider 10, the bottom of a first fixing ring 3 is provided with a first circular chute 11 matched with the first slider 10, the ball 102 can better rotate when the gate valve body 1 is opened by arranging the first slider 10 and the first circular chute 11, the top of the surface of the stem 103 is fixedly connected with a stopper 14, both sides of the bottom of the stopper 14 are fixedly connected with a third slider 15, the top of a second fixing ring 9 is provided with a second circular chute 16 matched with the third slider 15, and the stopper 14, the third slider 15 and the second circular chute 16 are arranged to drive a second sealing gasket 7 to move downwards when the gate valve body 1 is closed, the top of the valve body 101 is communicated with a first seal box 2, the bottom of the inner cavity of the first seal box 2 is provided with a first fixing ring 3, the first fixing ring 3, a first sealing gasket 5, a second sealing gasket 7 and a second fixing ring 9 are all in the shape of a ring, the first fixing ring 3, the first sealing gasket 5, the second sealing gasket 7 and the second fixing ring 9 are all sleeved on the surface of the valve rod 103, the top of the first fixing ring 3 is fixedly connected with a first spring 4, the top of the first spring 4 is fixedly connected with the first sealing gasket 5, the first sealing gasket 5 and the second sealing gasket 7 are both hard sealing gaskets, the surfaces of the first spring 4 and the second spring 8 are both coated with antirust paint, the service lives of the first spring 4 and the second spring 8 can be prolonged by arranging the antirust paint, the top of the first seal box 2 is fixedly connected with the second seal box 6, both sides of the second seal box 6 are both provided with limiting chutes 12, the two sides of the second fixing ring 9 are fixedly connected with the second sliding block 13, one side of the second sliding block 13, which is far away from the second fixing ring 9, extends to the inner cavity of the limiting sliding groove 12 and is movably connected with the limiting sliding groove 12, the second fixing ring 9 can better move up and down by arranging the limiting sliding groove 12 and the second sliding block 13, the bottom of the inner cavity of the second sealing box 6 is provided with the second sealing gasket 7, the top of the second sealing gasket 7 is fixedly connected with the second spring 8, the top of the second spring 8 is fixedly connected with the second fixing ring 9, and by the matching use of the gate valve body 1, the valve body 101, the sphere 102, the valve rod 103, the first sealing box 2, the first fixing ring 3, the first spring 4, the first sealing gasket 5, the second sealing box 6, the second sealing gasket 7, the second spring 8 and the second fixing ring 9, the valve rod 103 can be always kept in good sealing property when the gate valve body 1 is opened or closed, the problem of current gate valve because valve rod 103 department leakproofness is relatively poor, very easily appear the condition of infiltration in valve rod 103 department, consequently need improve the leakproofness of valve rod 103 is solved.

When the gate valve is used, when the gate valve body 1 is opened, the valve rod 103 is rotated upwards at the moment, the valve rod 103 drives the ball 102 to move upwards, the ball 102 drives the first sliding block 10 to rotate in the first circular sliding groove 11, the first fixing ring 3 moves upwards at the moment, the first fixing ring 3 drives the first sealing gasket 5 to move upwards, the first sealing gasket 5 is contacted with the top of the inner cavity of the first sealing box 2 to complete sealing, and the water leakage phenomenon at the position of the valve rod 103 is prevented when the gate valve is opened, when closing gate valve body 1, valve rod 103 drives stopper 14 downstream, and stopper 14 drives third slider 15 and rotates in the circular spout 16 of second, and the solid fixed ring 9 downstream of second this moment, the solid fixed ring 9 of second drive the sealed 7 downstream of packing of second, and the sealed 7 bottom contact of packing of second and the 6 inner chambers of second seal box prevents that gate valve body 1 from valve rod 103 department when the closed condition the condition of leaking appears.

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 sealing device of gate valve rod, includes gate valve body (1), its characterized in that: the gate valve body (1) comprises a valve body (101), a ball body (102), a valve rod (103) and a driving device, the top of the valve body (101) is communicated with a first sealing box (2), the bottom of the inner cavity of the first sealing box (2) is provided with a first fixing ring (3), a first spring (4) of the top fixedly connected with of the first fixing ring (3), a first sealing gasket (5) of the top fixedly connected with of the first spring (4), a second sealing gasket (6) of the top fixedly connected with of the first sealing box (2), a second sealing gasket (7) is arranged at the bottom of the inner cavity of the second sealing box (6), a second spring (8) of the top fixedly connected with of the second sealing gasket (7), and a second fixing ring (9) of the top fixedly connected with of the second spring (8).

2. The sealing device of a gate valve stem according to claim 1, wherein: the two sides of the top of the sphere (102) are fixedly connected with first sliding blocks (10), and the bottom of the first fixing ring (3) is provided with first circular sliding grooves (11) matched with the first sliding blocks (10).

3. The sealing device of a gate valve stem according to claim 1, wherein: the shape of first solid fixed ring (3), first sealed pad (5), the sealed pad of second (7) and the solid fixed ring of second (9) is the ring shape, the surface of valve rod (103) is all located to first solid fixed ring (3), first sealed pad (5), the sealed pad of second (7) and the solid fixed ring of second (9) cover.

4. The sealing device of a gate valve stem according to claim 1, wherein: spacing spout (12) have all been seted up to the both sides of second seal box (6), the equal fixedly connected with second slider (13) in both sides of the solid fixed ring of second (9), one side that the solid fixed ring of second (9) was kept away from in second slider (13) extends to the inner chamber of spacing spout (12) and with spacing spout (12) swing joint.

5. The sealing device of a gate valve stem according to claim 1, wherein: the top fixedly connected with stopper (14) on valve rod (103) surface, the equal fixedly connected with third slider (15) in both sides of stopper (14) bottom, the circular spout (16) of second with third slider (15) looks adaptation are seted up at the top of the solid fixed ring of second (9).

6. The sealing device of a gate valve stem according to claim 1, wherein: the first sealing gasket (5) and the second sealing gasket (7) are hard sealing gaskets, and the surfaces of the first spring (4) and the second spring (8) are coated with antirust paint.