CN218377737U - Gate valve rod double sealing device - Google Patents
Gate valve rod double sealing device Download PDFInfo
- Publication number
- CN218377737U CN218377737U CN202222918607.0U CN202222918607U CN218377737U CN 218377737 U CN218377737 U CN 218377737U CN 202222918607 U CN202222918607 U CN 202222918607U CN 218377737 U CN218377737 U CN 218377737U
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- China
- Prior art keywords
- valve
- rod
- seepage
- valve body
- sealing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 63
- 230000002265 prevention Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 6
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 230000001174 ascending effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 3
- 210000004907 gland Anatomy 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The utility model discloses a gate valve rod double sealing device, the valve gap at flange plate top is installed in the valve body one-level demountable installation that has the flange board including the top structure, the rotatable body of rod of installing in the valve body, demountable installation has the sealed pad of one-level on the outer fringe face of the body of rod, the sealed bottom structure of one-level is the echelonment boss, the bottom of boss is constructed between two parties has the prevention of seepage sealing washer, the sealed pad of adaptation one-level prevention of seepage sealing washer seal installation has been seted up in the valve body, the sealed pad of second grade has been constructed on the bottom outer fringe face of the body of rod, construct the ascending prevention of seepage snap ring of slope on the sealed outer fringe face of second grade, the draw-in groove of the sealed pad of adaptation second grade and prevention of seepage snap ring seal installation has been seted up in the valve body, flange board and valve gap and the structure connection have the hand wheel, this valve rod double sealing device, rational in infrastructure, be favorable to promoting the sealed effect between the body of rod and the valve body, therefore, high practicability is achieved.
Description
Technical Field
The utility model belongs to the technical field of the gate valve, concretely relates to gate valve rod double sealing device.
Background
The gate valve is an opening and closing piece gate plate, the moving direction of the gate plate is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed, the gate valve is not suitable for different gate parameters, the gate valve is usually 5 degrees, and the temperature of a medium is 2 degrees and 52 degrees when the temperature is not high. The gate plate of the wedge gate valve can be made into a whole, namely a rigid gate plate; the gate plate can also be made into a gate plate capable of generating micro deformation so as to improve the manufacturability of the gate plate and compensate the deviation of the angle of the sealing surface in the machining process, and the gate plate is called an elastic gate plate.
The publication number CN205261000U discloses a dual rod body sealing structure of a valve, wherein a rod body is vertically and rotatably installed in a shaft hole formed in the upper part of a valve body, a gland is sleeved on the valve body on the upper part of the rod body, an O-shaped ring seat is coaxially sleeved between the contact surfaces of the rod body and the valve body, and an O-shaped ring is respectively installed on the inner ring and the outer ring of the O-shaped ring seat in a limiting manner; a gasket is coaxially arranged above the O-shaped ring seat in the axial direction, and a lip-shaped sealing ring is coaxially arranged at the upper end of the gasket to play a role of secondary sealing; the lip-shaped sealing ring is coaxially and limitedly provided with a gland, the gland is sleeved on the rod body, and a plurality of screws are uniformly distributed on the gland in the radial direction and are fixedly arranged on the valve body. The valve adopts double sealing, the first way is O-shaped ring sealing, and after the O-shaped ring is damaged, the lip-shaped sealing ring can also play a role in sealing, so that the sealing of the valve rod body is ensured, and the maintenance cost is saved.
Adopt double seal, the first is O shape circle seal, and O shape circle damages the back, and the lip seal circle can also play sealed, has guaranteed the sealed of valve rod body department, can be when the in-service use, and the medium still has the condition of breaking the lip seal circle under the pressure effect in the gate valve, overflows through the peripheral gap of lip seal circle promptly, can not play good sealed effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gate valve rod double sealing device 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 does:
a double sealing device for a valve rod of a gate valve comprises a valve cover, a valve body and a valve body, wherein the top of the valve cover is provided with a flange plate;
a rod body is rotatably arranged in the valve body, a primary sealing gasket is detachably arranged on the outer edge surface of the rod body, the bottom of the primary sealing gasket is in a step-shaped boss, an anti-seepage sealing ring is arranged in the middle of the bottom of the boss, and a sealing groove matched with the primary sealing gasket and the step-shaped boss and used for sealing and installing the primary anti-seepage sealing ring is formed in the valve body;
the sealed pad of second grade of having constructed on the bottom outer fringe face of the body of rod, the sealed ascending prevention of seepage snap ring that inclines of having constructed on the outer fringe face that fills up of second grade, the draw-in groove of the sealed pad of adaptation second grade and the sealed installation of prevention of seepage snap ring has been seted up in the valve body.
Further, the top end of the rod body extends out of the flange plate and the valve cover and is structurally connected with a hand wheel, and one end, away from the hand wheel, of the rod body is detachably connected with a valve plate which can be rotatably installed in the valve body.
Furthermore, the upper end surface of the valve cover is provided with connecting bolts in an annular array, and one ends of the connecting bolts can be screwed into the flange plate.
Furthermore, both ends of the valve body are structurally connected with valve pipes, one end, far away from the valve body, of each valve pipe is structurally connected with a connecting flange, and connecting holes are formed in the connecting flanges in an annular array mode.
Further, be provided with the sealing ring between two parties on the outer fringe face of valve plate, and be provided with the ring channel on the outer fringe face of valve plate, the sealing ring can be fixed in the ring channel by bonding.
Compared with the prior art, the utility model discloses following beneficial effect has: benefit from the valve body, the flange board, the valve gap, the body of rod, the one-level is sealed to fill up, the prevention of seepage sealing washer, the setting of second grade sealed pad and prevention of seepage snap ring, through set up the one-level sealed pad on the outer fringe face of the body of rod and construct the boss that is the echelonment in the sealed bottom of one-level, and cooperate the prevention of seepage sealing washer to form the ladder nature sealed, it overflows to be difficult to break through the boss that is the echelonment and the prevention of seepage sealing washer subsequently, thereby realize the one-level and seal, through set up second grade sealed pad and prevention of seepage snap ring on the outer fringe face of the body of rod, because the slope upwards sets up, so can play the barrier effect to the medium, further prevent that the medium from overflowing, thereby realize the second grade and seal, be favorable to promoting the sealed effect between the body of rod and the valve body, therefore, the clothes hanger is strong in practicability.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention in fig. 1;
fig. 3 is an enlarged schematic view of a structure a in fig. 2 according to the present invention.
In the figure: 1. a valve body; 2. a valve tube; 3. a connecting flange; 4. connecting holes; 5. a flange plate; 6. a valve cover; 7. a connecting bolt; 8. a rod body; 9. a hand wheel; 10. a primary seal gasket; 11. an anti-seepage sealing ring; 12. a secondary sealing gasket; 13. an anti-seepage snap ring; 14. a valve plate.
Detailed Description
In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.
As shown in fig. 1-3, the gate valve stem double sealing device includes a valve body 1 with a flange plate 5 at the top, a valve bonnet 6 detachably mounted at the top of the flange plate 5 at one level, a stem body 8 rotatably mounted in the valve body 1, a first-level sealing gasket 10 detachably mounted on the outer edge surface of the stem body 8, a stepped boss at the bottom of the first-level sealing gasket 10, an anti-seepage sealing ring 11 centrally mounted at the bottom of the boss, a sealing groove fitted with the first-level sealing gasket 10 and the stepped boss at one level and hermetically mounted in the valve body 1, a second-level sealing gasket 12 configured on the outer edge surface at the bottom of the stem body 8, an anti-seepage snap ring 13 inclined upward configured on the outer edge surface of the second-level sealing gasket 12, a clamping groove fitted with the second-level sealing gasket 12 and the anti-seepage snap ring 13 and hermetically mounted in the valve body 1, the flange plate 5, the valve bonnet 6, the stem body 8, the first-level sealing gasket 10, the anti-seepage sealing gasket 11, the second-level sealing gasket 12 and the anti-seepage snap ring 13, the first-seepage gasket 10 and the anti-seepage snap ring 13 are disposed on the outer edge surface, thereby achieving the effect of preventing the anti-seepage sealing gasket from overflowing of the first-seepage sealing gasket 10 and the anti-seepage snap ring from the first-seepage sealing gasket, and the anti-seepage snap ring 11.
As shown in fig. 1 and 2, a flange plate 5 and a valve cover 6 extend from the top end of the rod body 8, and a hand wheel 9 is connected to the top end of the rod body 8, the end of the rod body 8, which is far away from the hand wheel 9, is detachably connected with a valve plate 14 which is rotatably installed in the valve body 1, a sealing ring is arranged on the outer edge surface of the valve plate 14 in the middle, an annular groove is arranged on the outer edge surface of the valve plate 14, and the sealing ring can be fixedly bonded in the annular groove.
As shown in figure 1, the upper end face of the valve cover 6 is provided with connecting bolts 7 in an annular array, one ends of the connecting bolts 7 can be screwed into the flange plate 5, two ends of the valve body 1 are both structurally connected with valve pipes 2, one ends of the valve pipes 2, which are far away from the valve body 1, are structurally connected with connecting flanges 3, and the connecting flanges 3 are internally provided with connecting holes 4 in an annular array.
The working principle is as follows: this gate valve rod double seal device, during the use, through set up one-level sealed pad 10 and construct the boss that is the echelonment in one-level sealed pad 10 bottom on the outer fringe face of the body of rod 8, and cooperate prevention of seepage sealing circle 11 to form the ladder sealed, then it overflows to be difficult to break through the boss that is the echelonment and prevention of seepage sealing circle 11, thereby realize one-level sealed, through set up two-level sealed pad 12 and prevention of seepage snap ring 13 on the outer fringe face of the body of rod 8, because the slope upwards sets up, so can play the effect of blockking the medium, further prevent that the medium from spilling over, thereby realize two-level sealed, through holding hand wheel 9 and rotatory, accessible body of rod 8 drives valve plate 14 and rotates, thereby realize opening and closing of valve body 1, this gate valve rod double seal device, and is rational in infrastructure, be favorable to promoting the sealed effect between the body of rod and the valve body, therefore, the clothes hanger is strong in practicability.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A double sealing device for a gate valve rod comprises a valve body (1) with a flange plate (5) at the top, and a valve cover (6) which is detachably arranged at the top of the flange plate (5) at the first stage;
the method is characterized in that: a rod body (8) is rotatably mounted in the valve body (1), a primary sealing gasket (10) is detachably mounted on the outer edge surface of the rod body (8), the bottom of the primary sealing gasket (10) is in a step-shaped boss, an anti-seepage sealing ring (11) is centrally constructed at the bottom of the boss, and a sealing groove which is matched with the primary sealing gasket (10) and the step-shaped boss and is used for sealing the primary anti-seepage sealing ring (11) is formed in the valve body (1);
the sealed pad (12) of second grade of having constructed on the bottom outer fringe face of the body of rod (8), the ascending prevention of seepage snap ring (13) of slope have been constructed on the outer fringe face of the sealed pad (12) of second grade, the draw-in groove of the sealed pad (12) of adaptation second grade and prevention of seepage snap ring (13) seal installation has been seted up in valve body (1).
2. The gate valve stem double seal of claim 1, wherein: the top of the rod body (8) extends out of the flange plate (5) and the valve cover (6) and is structurally connected with a hand wheel (9), and one end, away from the hand wheel (9), of the rod body (8) is detachably connected with a valve plate (14) which can be rotatably installed in the valve body (1).
3. The gate valve stem double seal of claim 1, wherein: the upper end surface of the valve cover (6) is provided with connecting bolts (7) in an annular array, and one ends of the connecting bolts (7) can be screwed into the flange plate (5).
4. The gate valve stem double sealing device of claim 1, wherein: the two ends of the valve body (1) are all structurally connected with valve pipes (2), one end of each valve pipe (2) far away from the valve body (1) is structurally connected with a connecting flange (3), and connecting holes (4) are formed in the connecting flanges (3) in an annular array mode.
5. The gate valve stem double seal of claim 2, wherein: the outer edge face of valve plate (14) is provided with the sealing ring between two parties, and is provided with the ring channel on the outer edge face of valve plate (14), but the sealing ring bonding fixation is in the ring channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918607.0U CN218377737U (en) | 2022-10-31 | 2022-10-31 | Gate valve rod double sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222918607.0U CN218377737U (en) | 2022-10-31 | 2022-10-31 | Gate valve rod double sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218377737U true CN218377737U (en) | 2023-01-24 |
Family
ID=84935874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222918607.0U Expired - Fee Related CN218377737U (en) | 2022-10-31 | 2022-10-31 | Gate valve rod double sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218377737U (en) |
-
2022
- 2022-10-31 CN CN202222918607.0U patent/CN218377737U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230124 |