CN211852821U - Forged steel stop valve - Google Patents
Forged steel stop valve Download PDFInfo
- Publication number
- CN211852821U CN211852821U CN202020422824.9U CN202020422824U CN211852821U CN 211852821 U CN211852821 U CN 211852821U CN 202020422824 U CN202020422824 U CN 202020422824U CN 211852821 U CN211852821 U CN 211852821U
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- valve
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- valve body
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Abstract
The utility model provides a forged steel stop valve relates to the stop valve field, including valve body, valve rod, round pin axle and nut, the top fixedly connected with valve gap of valve body, the inside of valve body be equipped with the valve clack of valve body looks adaptation, valve clack swing joint is equipped with the gland between the surface of valve rod and the valve gap in the bottom of valve rod, and the top and the bottom of gland all are equipped with the filler, and the top of filler is equipped with the casting die, and the top of casting die is equipped with connects the gland, and the both ends of valve gap top have all fixedly hinged through the round pin axle and. This forged steel stop valve when the nut of screwing up the screw rod surface, moves the casting die through connecting the gland downward pressure, extrudees the packing through the casting die and establishes the gland between two packings, makes packing and gland remain extruded state in the inside of valve gap all the time, when the valve rod carries out rotary motion, makes the packing not receive any rotatory radial force, has guaranteed the leakproofness of the inside packing of device to the life of packing has been improved.
Description
Technical Field
The utility model relates to a stop valve technical field specifically is a forged steel stop valve.
Background
The stop valve is also called stop valve, belonging to forced sealing type valve, so when the valve is closed, it must apply pressure to valve clack to force sealing surface not to leak, when the medium is fed into the valve from below the valve clack, the resistance force which must be overcome by operation force is the friction force of valve stem and packing material and the thrust force produced by pressure of medium, the force for closing the valve is greater than the force for opening the valve, so the diameter of valve stem is greater, otherwise the failure of stem top bending can occur.
Current stop valve adopts the hand wheel to be fixed with the valve rod, makes the valve rod follow rotatory and do the elevating movement through rotatory hand wheel, though simple structure, the valve rod rotation can make the packing receive rotatory radial force, can't ensure the life who packs leakproofness and influence packing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a forged steel stop valve.
Technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a forged steel stop valve, includes valve body, valve rod, round pin axle and nut, the top fixedly connected with valve gap of valve body, the inside of valve body be equipped with the valve clack of valve body looks adaptation, valve clack swing joint is equipped with the gland in the bottom of valve rod between the surface of valve rod and the valve gap, the top and the bottom of gland all are equipped with the filler, the top of filler is equipped with the casting die, the top of casting die is equipped with the connection gland, the both ends of valve gap top have the screw rod through the equal fixed hinge joint of round pin axle, connect the gland and pass through the top of.
Furthermore, a thread sleeve is fixedly connected inside the connecting gland, the outer surface of the valve rod is in threaded connection with the inside of the thread sleeve, and the valve rod is controlled to rotate to ascend or rotate to descend under the action of rotating the valve rod on the thread sleeve.
Further, the upper portion of valve rod surface is equipped with the hand wheel, the interior diapire fixedly connected with restrictor ring of hand wheel, the top fixedly connected with screw thread lantern ring of restrictor ring, screw thread lantern ring threaded connection is at the surface of valve rod, and the surface threaded connection of valve rod has coupling nut, controls the valve rod through rotating the hand wheel and rotates, through the coupling nut who takes off the valve rod surface, can take out the hand wheel from the surface of valve rod.
Furthermore, the valve body and the valve cover are connected in a welding mode, the top of the valve body is communicated with the bottom of the valve cover, and the pressure borne by the joint of the valve cover and the valve body is increased by adopting the welding mode.
Furthermore, the inner wall fixedly connected with of valve body wear-resisting piece, the material of wear-resisting piece is carbide, has increased the wearability of valve clack and valve body internal connection point through setting up wear-resisting piece, thereby prevents that the tie point from receiving the impact of medium to cause wearing and tearing to influence the leakproofness of tie point.
Compared with the prior art, this forged steel stop valve has following beneficial effect:
1. this forged steel stop valve when the nut of screwing up the screw rod surface, moves the casting die through connecting the gland downward pressure, extrudees the packing through the casting die and establishes the gland between two packings, makes packing and gland remain extruded state in the inside of valve gap all the time, when the valve rod carries out rotary motion, makes the packing not receive any rotatory radial force, has guaranteed the leakproofness of packing to the life of packing has been improved.
2. This forged steel stop valve, come at the effect of screw thread external member through rotating the valve rod, come the control valve rod to rotate and rise or rotatory decline, control the valve rod through rotating the hand wheel and rotate, through the coupling nut who takes off the valve rod surface, can take out the hand wheel from the surface of valve rod, through adopting welded mode, the pressure that the junction of increase valve gap and valve body bore, through setting up the wearability that wear-resisting piece has increased valve clack and valve body internal connection point, thereby prevent that the junction from receiving the impact of medium to cause wearing and tearing to influence the leakproofness of junction.
Drawings
FIG. 1 is a sectional view of the present invention;
fig. 2 is an enlarged schematic view of a position a of the present invention.
Wherein, 1, a valve body; 2. a valve flap; 3. a valve stem; 4. a valve cover; 5. a filler; 6. a gland; 7. a pin shaft; 8. pressing parts; 9. a screw; 10. connecting a gland; 11. a nut; 12. a threaded sleeve; 13. a threaded collar; 14. a confinement ring; 15. a connecting nut; 16. a hand wheel; 17. and (7) a wear-resistant block.
Detailed Description
As shown in fig. 1-2, an embodiment of the present invention provides a forged steel stop valve, which comprises a valve body 1, a valve rod 3, a pin 7 and a nut 11, wherein a valve cover 4 is fixedly connected to the top of the valve body 1, the connection between the valve body 1 and the valve cover 4 is welded, the top of the valve body 1 is communicated with the bottom of the valve cover 4, the pressure applied to the connection between the valve cover 4 and the valve body 1 is increased by adopting the welding method, a valve flap 2 adapted to the valve body 1 is arranged inside the valve body 1, a wear-resistant block 17 is fixedly connected to the inner wall of the valve body 1, the material of the wear-resistant block 17 is hard alloy, the wear resistance of the connection point inside the valve flap 2 and the valve body 1 is increased by arranging the wear-resistant block 17, thereby preventing the connection point from being worn by the impact of a medium and affecting the sealing performance of the connection point, the valve flap 2, gland 6's top and bottom all are equipped with packing 5, packing 5's top is equipped with casting die 8, casting die 8's top is equipped with connection gland 10, the both ends of valve gap 4 top all fix through round pin axle 7 and articulate there is screw rod 9, it passes through screw rod 9 and nut 11 fixed mounting at casting die 8's top to connect gland 10, the inside fixedly connected with screw thread external member 12 of connection gland 10, the surface threaded connection of valve rod 3 is in the inside of screw thread external member 12, come at the effect of screw thread external member 12 through rotating valve rod 3, control valve rod 3 and rotate and rise or rotatory decline.
The upper portion of valve rod 3 surface is equipped with hand wheel 16, the inner diapire fixedly connected with limit ring 14 of hand wheel 16, the top fixedly connected with screw thread lantern ring 13 of limit ring 14, screw thread lantern ring 13 threaded connection is at the surface of valve rod 3, the surface threaded connection of valve rod 3 has coupling nut 15, control valve rod 3 through rotating hand wheel 16 and rotate, through the coupling nut 15 of taking off valve rod 3 surface, can take out hand wheel 16 from the surface of valve rod 3.
When the forged steel stop valve is used, two ends of the valve body 1 are connected with a pipeline, the valve rod 3 is rotated and lifted by rotating the hand wheel 16 under the action of the thread sleeve 12, the valve clack 2 at the bottom of the valve rod 3 is pulled to rise through the valve rod 3, a circulation channel in the valve body 1 is opened, the pressing piece 8 is pressed downwards through the connecting gland 10, the packing 5 and the gland 6 arranged between the two packings 5 are pressed through the pressing piece 8, so that the packings 5 and the gland 6 are always kept in a pressed state in the valve cover 4, when the valve rod 3 rotates, the packing 5 is not subjected to any radial rotating force, the sealing performance of the packing 5 is ensured, thereby improved the life of packing 5, increased the wearability of valve clack 2 and valve body 1 internal connection point through setting up wear-resisting piece 17, thereby prevent that the connection point from receiving the impact of medium to cause wearing and tearing to influence the leakproofness of junction.
Claims (5)
1. The utility model provides a forged steel stop valve, includes valve body (1), valve rod (3), round pin axle (7) and nut (11), its characterized in that: the top fixedly connected with valve gap (4) of valve body (1), the inside of valve body (1) is equipped with valve clack (2), valve clack (2) swing joint is in the bottom of valve rod (3), be equipped with gland (6) between the surface of valve rod (3) and valve gap (4), the top and the bottom of gland (6) all are equipped with packing (5), the top of packing (5) is equipped with casting die (8), the top of casting die (8) is equipped with connects gland (10), the equal fixed hinge in both ends above valve gap (4) has screw rod (9) through round pin axle (7), it passes through screw rod (9) and nut (11) fixed mounting at the top of casting die (8) to connect gland (10).
2. A forged steel shut-off valve according to claim 1, wherein: the interior fixedly connected with screw thread external member (12) of connecting gland (10), the inside at screw thread external member (12) is connected to the surface threaded connection of valve rod (3).
3. A forged steel shut-off valve according to claim 1, wherein: the upper portion of valve rod (3) surface is equipped with hand wheel (16), the interior diapire fixedly connected with limit ring (14) of hand wheel (16), the top fixedly connected with screw thread lantern ring (13) of limit ring (14), screw thread lantern ring (13) threaded connection is at the surface of valve rod (3), the surface threaded connection of valve rod (3) has coupling nut (15).
4. A forged steel shut-off valve according to claim 1, wherein: the valve body (1) and the valve cover (4) are connected by welding, and the top of the valve body (1) is communicated with the bottom of the valve cover (4).
5. A forged steel shut-off valve according to claim 1, wherein: the inner wall of the valve body (1) is fixedly connected with a wear-resistant block (17), and the wear-resistant block (17) is made of hard alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020422824.9U CN211852821U (en) | 2020-03-29 | 2020-03-29 | Forged steel stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020422824.9U CN211852821U (en) | 2020-03-29 | 2020-03-29 | Forged steel stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211852821U true CN211852821U (en) | 2020-11-03 |
Family
ID=73138009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020422824.9U Active CN211852821U (en) | 2020-03-29 | 2020-03-29 | Forged steel stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211852821U (en) |
-
2020
- 2020-03-29 CN CN202020422824.9U patent/CN211852821U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |