CN212616701U - Valve rod packing sealing structure - Google Patents
Valve rod packing sealing structure Download PDFInfo
- Publication number
- CN212616701U CN212616701U CN202020693794.5U CN202020693794U CN212616701U CN 212616701 U CN212616701 U CN 212616701U CN 202020693794 U CN202020693794 U CN 202020693794U CN 212616701 U CN212616701 U CN 212616701U
- Authority
- CN
- China
- Prior art keywords
- gland
- valve body
- valve
- valve rod
- draw hook
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to a valve rod packing seal structure, which comprises a valve body, a valve rod arranged on the valve body, at least two drag hooks and a gland, wherein the valve body is provided with a trough, the gland is arranged on the valve body, one end of the gland is arranged in the trough, the valve rod passes through the trough and forms a closed cavity body with the valve body and the gland, the cavity body is internally provided with packing, the outer peripheral surface of the valve body is provided with a ring groove, one end of each drag hook is clamped in the ring groove, the gland is provided with a limit hole along the axial direction of the valve rod, the other end of the drag hook passes through the limit hole, a control mechanism for controlling the axial displacement of the drag hook along the valve rod is arranged between the gland and the drag hook, when in use, one end of the drag hook is matched with the ring groove, the drag hook is, the control mechanism can control each drag hook, the operation is convenient, and the gland can compress the packing uniformly and reliably.
Description
Technical Field
The utility model belongs to the technical field of the valve technique and specifically relates to a valve rod packing structure is related to.
Background
Valve element group spare etc. sets up on the valve rod in the valve body, need drive the internal case of valve body through the valve rod, thereby control opening and closing of valve body, set up a plurality of locking screw through setting up on the gland on the current valve body and press the packing, need screw up or dismantle each screw one by one when installation and maintenance, need rotate to required position screw one by one when screwing up, then screw up a bit one by one with the screw slowly, last unified locking again, the operation is more loaded down with trivial details, it is more loaded down with trivial details to dismantle, waste time and labor, and the work efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: in order to solve the problems that a plurality of locking screws are arranged on a gland to press packing on the existing valve body, when the valve body is installed and maintained, the screws are required to be screwed down or disassembled one by one, the operation is complex, the disassembly is complex, the time and the labor are wasted, and the working efficiency is reduced, a valve rod packing structure is provided at present.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a valve rod packing structure, includes the valve body and sets up the valve rod on the valve body, still includes two at least drag hooks and gland, the silo has been seted up on the valve body, the gland sets up on the valve body, the one end setting of gland is in the silo, the valve rod pass the silo and with valve body and gland between form the confined cavity body, the internal filler that is provided with of cavity, be provided with the ring channel on the outer peripheral face of valve body, each the one end card of drag hook is established in the ring channel, be provided with spacing hole along the valve rod axial on the gland, the drag hook other end passes spacing hole, be provided with the control mechanism who is used for controlling the drag hook along valve rod axial displacement between gland and the drag.
The utility model discloses the ring channel cooperation on the one end of drag hook and the valve body drives the drag hook along valve rod axial displacement by the control mechanism on the gland again to change the interval between gland and the valve body, just so make the packing in the cavity compress tightly, only need control mechanism just so can control each drag hook, convenient operation like this, the gland compresses tightly evenly reliably to the packing simultaneously.
In order to realize that the control mechanism drives the draw hook to move along the axial direction of the valve rod, further, the control mechanism comprises a threaded sleeve arranged on the gland, and the peripheral surface of the threaded sleeve is in threaded connection with the gland. Threaded connection between the swivel nut on one end through the drag hook and the gland just drives the drag hook displacement to it can compress tightly on the valve body to make the gland.
Furthermore, the inner circumferential surface of the screw sleeve is provided with internal threads and is in threaded connection with the valve body.
In order to quickly lock or unlock the draw hook by the screw sleeve, the screw threads on the outer circumferential surface and the inner circumferential surface of the screw sleeve are further opposite in screwing direction. The threads on the outer peripheral surface and the inner peripheral surface of the screw sleeve are oppositely screwed, so that the threads with opposite ends can realize that the screw sleeve is relatively close to or relatively far away from the draw hook, and the draw hook can be quickly locked or unlocked by the screw sleeve.
In order to ensure that the threaded connection of the threaded sleeve is stable and reliable, a disc spring is sleeved on the draw hook and is positioned between the pressing cover and the threaded sleeve. The disc spring is sleeved on the gland and the threaded sleeve on the draw hook, the disc spring plays a role in tensioning the threaded sleeve, and threaded connection of the threaded sleeve is stable and reliable.
Furthermore, a gasket is sleeved on the draw hook and is positioned between the threaded sleeve and the disc spring.
In order to realize that drag hook one end card establishes in the ring channel, furtherly, the drag hook has linkage segment and sets up the joint section in linkage segment one end, joint section and ring channel phase-match, the joint section card is established in the ring channel. The clamping section matched with the annular groove is arranged on the draw hook, so that one end of the draw hook can be clamped in the annular groove.
The utility model has the advantages that: when the valve rod packing sealing structure of the utility model is used, one end of the draw hook is matched with the annular groove on the valve body, and then the control mechanism on the gland drives the draw hook to move along the axial direction of the valve rod, and the space between the gland and the valve body is changed, so that the filler in the cavity is compressed, each draw hook can be controlled by controlling the control mechanism, the operation is convenient, meanwhile, the gland presses the packing uniformly and reliably, thereby avoiding the situation that the packing is pressed on the existing valve body through a plurality of locking screws arranged on the gland, when in installation and maintenance, the screws need to be screwed up or disassembled one by one, when in screwing up, the screws need to be rotated to required positions one by one, then slowly screw up a bit with the screw one by one, at last lock in unison again, the operation is more loaded down with trivial details, dismantles more loaded down with trivial details, takes time and takes a lot of work, reduces work efficiency's problem.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view of a portion B of FIG. 1;
fig. 4 is a top view of the middle screw sleeve of the present invention.
In the figure: 1. the valve comprises a valve body, 2, a valve rod, 3, a gland, 4, a filler, 5, a cavity body, 6, a draw hook, 7, a clamping section, 8, a connecting section, 9, a threaded sleeve, 10, a limiting hole, 11, a disc spring, 12, a gasket, 13 and an annular groove.
Detailed Description
The utility model discloses the following embodiment of combining does further detailing:
the utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 by those of ordinary skill in the art through specific situations.
As shown in fig. 1-4, a valve rod packing structure comprises a valve body 1, a valve rod 2 arranged on the valve body 1, two drag hooks 6 and a gland 3, wherein a trough is formed in the valve body 1, the gland 3 is arranged on the valve body 1, one end of the gland 3 is arranged in the trough, the valve rod 2 penetrates through the trough and forms a closed cavity 5 with the valve body 1 and the gland 3, a packing 4 is arranged in the cavity 5, an annular groove 13 is formed in the outer peripheral surface of the valve body 1, one end of each drag hook 6 is clamped in the annular groove 13, a limiting hole 10 is axially arranged on the gland 3 along the valve rod 2, the other end of each drag hook 6 penetrates through the limiting hole 10, and a control mechanism for controlling the drag hooks 6 to axially displace along the valve rod 2 is arranged between the gland 3 and the drag hooks 6. The draw hook 6 has linkage segment 8 and sets up the joint section 7 in linkage segment 8 one end, joint section 7 and ring channel 13 phase-match, joint section 7 card is established in ring channel 13.
The control mechanism comprises a threaded sleeve 9 arranged on the gland 3, and the peripheral surface of the threaded sleeve 9 is in threaded connection with the gland 3.
The inner circumferential surface of the screw sleeve 9 is provided with internal threads and is in threaded connection with the valve body 1.
The thread directions on the outer circumferential surface and the inner circumferential surface of the screw sleeve 9 are opposite.
A disc spring 11 is sleeved on the drag hook 6, and the disc spring 11 is located between the pressing cover 3 and the threaded sleeve 9.
The draw hook 6 is sleeved with a gasket 12, and the gasket 12 is positioned between the threaded sleeve 9 and the disc spring 11.
When the valve rod packing sealing structure is used, firstly, packing 4 is placed between a valve body 1 and a valve rod 2 of the valve rod 2, then a gland 3 is placed on the valve body 1, meanwhile, a clamping section 7 at one end of a draw hook 6 is clamped in an annular groove 13 of the valve body 1, a connecting section 8 at the other end of the draw hook 6 penetrates through a limiting hole on the gland 3, meanwhile, a thread matched with a threaded sleeve 9 is arranged on the connecting section 8, the connecting section 8 is in threaded connection with the threaded sleeve 9, then, the threaded sleeve 9 is rotated to enable the threaded sleeve 9 to displace on the gland 3, the threaded sleeve 9 drives the draw hook 6 to displace, the draw hook 6 reversely acts on the gland 3, the gland 3 compresses the packing 4, installation is completed, when dismounting is performed, only the threaded sleeve 9 needs to be rotated, the clamping section 7 at one end of the draw hook 6 is loosened from the annular groove 13, the threaded sleeve 9 is dismounted, finally, a cover plate is dismounted, simultaneously, the two draw hooks 6 can simultaneously loosen or compress the gland 3, and the packing 4 is ensured to be uniformly and reliably compressed.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a valve rod packing structure, includes valve body (1) and sets up valve rod (2) on valve body (1), its characterized in that: also comprises at least two drag hooks (6) and a gland (3), a trough is arranged on the valve body (1), the gland (3) is arranged on the valve body (1), one end of the gland (3) is arranged in the trough, the valve rod (2) penetrates through the trough and forms a closed cavity body (5) with the valve body (1) and the gland (3), the cavity body (5) is internally provided with a filler (4), the peripheral surface of the valve body (1) is provided with an annular groove (13), one end of each drag hook (6) is clamped in the annular groove (13), a limiting hole (10) is axially arranged on the gland (3) along the valve rod (2), the other end of the draw hook (6) penetrates through the limiting hole (10), and a control mechanism used for controlling the draw hook (6) to move axially along the valve rod (2) is arranged between the gland (3) and the draw hook (6).
2. The valve stem packing structure of claim 1, wherein: the control mechanism comprises a threaded sleeve (9) arranged on the gland (3), and the peripheral surface of the threaded sleeve (9) is in threaded connection with the gland (3).
3. The valve stem packing structure of claim 2, wherein: the inner circumferential surface of the threaded sleeve (9) is provided with internal threads and is in threaded connection with the valve body (1).
4. The valve stem packing structure of claim 3, wherein: the thread directions of the outer circumferential surface and the inner circumferential surface of the thread sleeve (9) are opposite.
5. The valve stem packing structure of claim 2, wherein: a disc spring (11) is sleeved on the draw hook (6), and the disc spring (11) is located between the gland (3) and the threaded sleeve (9).
6. The valve stem packing structure of claim 5, wherein: a gasket (12) is sleeved on the draw hook (6), and the gasket (12) is located between the threaded sleeve (9) and the disc spring (11).
7. The valve stem packing structure of claim 1, wherein: draw hook (6) have linkage segment (8) and set up joint section (7) in linkage segment (8) one end, joint section (7) and ring channel (13) phase-match, joint section (7) card is established in ring channel (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020693794.5U CN212616701U (en) | 2020-04-29 | 2020-04-29 | Valve rod packing sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020693794.5U CN212616701U (en) | 2020-04-29 | 2020-04-29 | Valve rod packing sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212616701U true CN212616701U (en) | 2021-02-26 |
Family
ID=74710068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020693794.5U Active CN212616701U (en) | 2020-04-29 | 2020-04-29 | Valve rod packing sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212616701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811174A (en) * | 2022-03-09 | 2022-07-29 | 中国船舶重工集团公司第七二五研究所 | Spiral packing pressing sleeve |
-
2020
- 2020-04-29 CN CN202020693794.5U patent/CN212616701U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811174A (en) * | 2022-03-09 | 2022-07-29 | 中国船舶重工集团公司第七二五研究所 | Spiral packing pressing sleeve |
| CN114811174B (en) * | 2022-03-09 | 2023-09-22 | 中国船舶重工集团公司第七二五研究所 | Spiral packing pressing sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212616701U (en) | Valve rod packing sealing structure | |
| CN206943182U (en) | A kind of fishbolt | |
| CN113187904A (en) | Realize sealed locking detachable high pressure valve | |
| CN212616702U (en) | Portable valve rod sealing structure | |
| CN209762337U (en) | Multi-directional valve based on natural gas pipeline branch connection | |
| CN204985763U (en) | Spacing flexible butterfly valve | |
| CN208057076U (en) | A kind of drilling rod preventer | |
| CN203626663U (en) | Device for replacing SAGD steam injection wellhead gate valve under pressure | |
| CN211867622U (en) | Double offset ring spanner for disassembling filtering equipment | |
| CN211231641U (en) | Gate valve with filtering capability | |
| CN207701810U (en) | A kind of gate valve of novel wear resistant | |
| CN205765886U (en) | A kind of ring main unit reserves sealing cap provision for disengagement | |
| CN112963431A (en) | Flange bolt with multidirectional self-locking structure | |
| CN209430923U (en) | A kind of fast twist-on head of pressing plate installing type | |
| CN221097604U (en) | Pressure reducing valve with valve core capable of being replaced quickly | |
| CN210950120U (en) | Magnetic control switch gate valve and valve opening and closing tool for magnetic control switch gate valve | |
| CN220302805U (en) | Top drive plug valve | |
| CN209370508U (en) | A kind of blank-plate valve easy to use | |
| CN206950780U (en) | A kind of industry water filter filter cylinder withdrawing device | |
| CN217898840U (en) | Stop valve that stability can be high | |
| CN208681429U (en) | A kind of advantageous torque spanner | |
| CN204136007U (en) | The valve seat tool for assembling of valve | |
| CN220647134U (en) | Wear-resistant rubber joint | |
| CN204312758U (en) | A kind of full-bore oblique rod type discharging valve | |
| CN217130345U (en) | Manual inflation valve structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |