CN217620316U - Valve rod lip seal packing tool - Google Patents
Valve rod lip seal packing tool Download PDFInfo
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- CN217620316U CN217620316U CN202220752606.0U CN202220752606U CN217620316U CN 217620316 U CN217620316 U CN 217620316U CN 202220752606 U CN202220752606 U CN 202220752606U CN 217620316 U CN217620316 U CN 217620316U
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- hole
- diameter
- lip seal
- valve rod
- lip
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Abstract
The utility model discloses a valve rod lip seal instrument of packing into, its basic operation principle is lip seal circle and tight ring in the uide bushing of packing into in advance (because lip seal circle is anti-dress, pack into easily), then adopt assorted double-screw bolt and nut to fix whole instrument of packing into on the valve body with the help of the original stud hole of valve body, pack four and tight screw into the uide bushing and in the tight screw hole afterwards, four and tight screw of screwing simultaneously, and during tight ring and lip seal circle follow and the smooth stable entering valve body of tight screw, realize lip seal's quick steady installation, the purpose of improvement installation effectiveness, guarantee simultaneously that lip seal circle is not damaged in assembling process.
Description
Technical Field
The utility model relates to a valve assembly technical field, in particular to valve rod lip seal packing into instrument. The method belongs to improvement of a method for installing the neck of the valve and the sealing lip-shaped sealing ring of the valve rod, and is mainly used for efficiently and stably installing the sealing lip-shaped sealing ring of the valve rod.
Background
The valve rod seal of the valve is one of important seals on the valve, and the lip-shaped seal ring is widely applied to the valve industry with the advantages of good sealing performance, large pressure bearing, long service life and the like. However, because the lip-shaped sealing ring is special in structure, the lip-shaped sealing ring needs to be installed in a specified direction during installation, the opening direction is the pressure positive direction during installation, the opening is larger under the action of the elastic element, the valve rod lip-shaped sealing ring needs to be installed inwards when being installed, and the gap between the valve neck stuffing box and the valve rod sealing position is smaller and deeper, so that the lip-shaped sealing ring is difficult to deform or damage in the traditional installation process, and finally the lip-shaped sealing ring fails to seal.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a valve rod lip seal packing into instrument. The basic operation principle is as follows: the lip-shaped sealing ring and the tightening ring are pre-installed in the guide sleeve (the lip-shaped sealing ring is reversely installed and is easily installed), the tightening ring is limited by the tightening screw, then the installing tool is fixed on the valve body by the aid of the original threaded hole of the valve body through the matched stud and the nut, four tightening screws are installed in the guide sleeve bolt hole, four tightening screws are evenly screwed simultaneously, the tightening ring and the lip-shaped sealing ring enter the valve body along with the tightening screw smoothly and stably, quick and stable installation of the lip-shaped sealing ring is achieved, the installation efficiency is improved, and meanwhile the lip-shaped sealing ring is prevented from being damaged in the assembling process.
For solving above technical problem, the utility model provides a valve rod lip seal instrument of packing into, including valve body and valve rod set up valve rod hole, lip seal mounting hole and uide bushing mounting hole in the valve body, valve rod hole, lip seal mounting hole and uide bushing mounting hole set gradually and the diameter increases progressively by supreme down in proper order, the valve rod join in marriage in and pass in proper order in the valve rod hole stretch out behind lip seal mounting hole and the uide bushing mounting hole the valve body to still include:
the guide sleeve is provided with a flange plate which is fixed on the valve body when being installed, a central hole which is arranged in the center of the flange plate and is used for the valve rod to pass through, and a guide part which is inserted into the mounting hole of the guide sleeve when being installed, and a guide hole which is communicated with the central hole is arranged in the guide part; at least one tightening screw hole is formed in the circumferential direction of the flange plate, and the diameter of the circumference where the circle center of the at least one tightening screw hole is located is larger than the diameter of the central hole and smaller than the diameter of at least one part of the guide hole; the diameter of the central hole is matched with that of the valve rod;
the tightening ring is arranged in the guide hole in a sliding mode and limited in axial limit position through a set screw arranged on the guide part in the radial direction, and a tightening ring inner hole for the valve rod to penetrate through is formed in the tightening ring;
at least one clamping screw which extends into the guide hole after being screwed through the clamping screw hole; during installation, the tail part of the tightening screw acts on the tightening ring to drive the tightening ring to move towards the direction of the mounting hole of the lip-shaped sealing ring, and the lip-shaped sealing ring is pressed into the mounting hole of the lip-shaped sealing ring.
In a preferred embodiment of the present invention, the guiding hole is divided into an upper guiding hole and a lower guiding hole, wherein the diameter of the upper guiding hole is larger than the diameter of the lower guiding hole, and the diameter of the lower guiding hole is equal to the diameter of the mounting hole of the lip-shaped sealing ring; the diameter of the circumference where the tightening screw hole is located is smaller than that of the upper-section guide hole.
In a preferred embodiment of the present invention, a diameter of a circle center of the tightening screw hole is equal to a diameter of the lower guide hole.
In a preferred embodiment of the present invention, a sum of a diameter of a circle of the tightening screw hole and a diameter of the tightening screw is smaller than a diameter of the upper guide hole.
In a preferred embodiment of the present invention, a ring groove is provided on the outer periphery of the fastening ring, and the set screw is embedded in the ring groove.
In a preferred embodiment of the present invention, the diameter of the inner hole of the tightening ring is in sliding fit with the diameter of the valve rod.
In a preferred embodiment of the present invention, the diameter of the outer periphery of the tightening ring is equal to the diameter of the lower guide hole and the diameter of the lip seal mounting hole.
In a preferred embodiment of the present invention, the flange plate is provided with bolt holes matching with the number of the studs mounted on the valve body; during installation, the studs penetrate through the corresponding bolt holes and then are tightened by nuts, so that the flange plate is fixed on the valve body.
Since the technical scheme as above is adopted, the utility model discloses realize lip seal's quick steady installation, improve the purpose of installation effectiveness, guarantee simultaneously that lip seal is not damaged in assembling process.
Drawings
Fig. 1 is a schematic structural view of a lip seal.
Fig. 2 is an assembly schematic diagram of the valve body, the valve stem and the lip seal.
Fig. 3 is a schematic view of the valve stem lip seal packing tool of the present invention mounted to a valve body.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a schematic view of the tool for installing the valve stem lip seal ring of the present invention pressing the lip seal ring into the mounting hole of the lip seal ring of the valve body.
Fig. 6 is a top view of fig. 5.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
wherein known valve body 1, lip seal 2, known valve rod 3 are original part, the utility model discloses a pack into lip mounting hole 1ab between known valve body 1 and the known valve rod 3 with target lip seal 2 steady, intact, efficient.
Referring to fig. 1, the lip-shaped sealing ring 2 comprises a plastic sealing body 2.1 and a metal annular spring 2.2, the sealing form is one-way sealing, and the sealing can be realized only when the pressure comes from the opening direction, the structure has the sealing effect only when being installed according to the specified direction, so the installation direction of the position of the valve rod 3 is that the opening of the lip-shaped sealing ring 2 faces the bottom plane 1aba of the lip-shaped installation hole 1ab of the valve rod hole 1a of the known valve body 1. However, due to the structural characteristics of the lip seal 2, the two sealing walls of the inner bore 2.3 and the outer circumference 2.4 of the lip seal 2 are extremely thin and are easily deformed or damaged when installed inward from the opening direction, so that the installation is difficult, and conversely, the installation is smooth and not easily damaged when installed from the back side in the opening direction.
As shown in fig. 2, the utility model discloses a lip seal 2's mounted position is relatively darker, and the space is minimum to still have step 1aaa between the uide bushing mounting hole 1aa of known valve body 1 and lip seal mounting hole 1ab, even if set up toper chamfer 3a and set up circular arc chamfer 1d at step 1aaa at valve rod 3, still very difficult operation, even unable installation adopts traditional mode of strikeing to very easily lead to lip seal 2 to damage.
A valve rod hole 1c, a lip-shaped sealing ring mounting hole 1b and a guide sleeve mounting hole 1a in the valve body 1 are sequentially arranged from bottom to top, the diameters of the valve rod hole 1c, the lip-shaped sealing ring mounting hole 1b and the guide sleeve mounting hole 1a are sequentially increased, and the valve rod 3 is assembled in the valve rod hole 1a and sequentially penetrates through the lip-shaped sealing ring mounting hole 1ab and the guide sleeve mounting hole 1aa to extend out of the valve body 1. The diameter of the inner hole 2.3 of the lip-shaped sealing ring 2 is matched with the diameter of the valve rod 3, and the diameter of the outer circle 2.4 is matched with the diameter of the mounting hole 1b of the lip-shaped sealing ring.
As shown in fig. 3 and 4, the tool for installing the valve stem lip seal ring of the present invention mainly comprises a tightening ring 4, a set screw 5, four tightening screws 6, a guide sleeve 7, a nut 8, and a stud 9, wherein the number of the tightening screws 6 is four, the number of the studs 9 is two, the number of the nuts 8 is two, the number of the tightening screws 5 is two, and the number of the remaining tightening screws is one.
The guide sleeve 7 has a flange 7a fixed to the valve body 1 at the time of mounting, a center hole 7aa opened at the center of the flange 7a for passing the valve rod 3 therethrough, and a guide portion 7b inserted into the guide sleeve mounting hole 1a at the time of mounting, and an upper portion of the guide portion 7b is integrally connected to the flange 7 a. The diameter of the central bore 7aa matches the diameter of the valve stem 3.
The two studs 9 are screwed into the two stud holes 1e of the valve body 1. Two stud holes 7ab and four tightening screw holes 7ac are uniformly distributed on the flange plate 7a in the circumferential direction, and the diameter of the circumference where the circle centers of the four tightening screw holes 7ac are located is larger than that of the center hole 7aa but smaller than that of the circumference where the circle centers of the two stud holes 7ab are located.
A guide hole which is communicated with the central hole 7aa is arranged in the guide part 7b and is divided into an upper section guide hole 7ba and a lower section guide hole 7bb, wherein the diameter of the upper section guide hole 7ba is larger than that of the lower section guide hole 7bb, and the diameter of the lower section guide hole 7bb is equal to that of the lip-shaped sealing ring mounting hole 1 ab; the four parallel fastening screw holes 7ac are formed in a circumference having a diameter smaller than the diameter of the upper-stage guide hole 7ba and equal to the diameter of the lower-stage guide hole 7 bb.
The four parallel fastening screws 6 extend into the upper section guide holes 7ba after being screwed through the corresponding parallel fastening screw holes 7 ac; the sum of the diameter of the circle where the centers of the four parallel tightening screw holes 7ac are located and the diameter of the parallel tightening screw 6 is slightly smaller than the diameter of the upper-section guide hole 7 ba.
Two fastening screw holes 7ad which radially penetrate through the guide sleeve 7 are uniformly distributed in the circumferential direction at the position of the guide sleeve 7 corresponding to the lower guide hole 7 bb.
The clamping ring 4 is arranged in the guide hole in a sliding manner and is limited in the axial limit position by two clamping screws 5 arranged on the guide part 7b in the radial direction. The method comprises the following steps: a tightening ring inner hole 4a for the valve rod 3 to pass through is arranged in the tightening ring 4, and the diameter of the tightening ring inner hole 4a is matched with the diameter of the valve rod 3 in a sliding mode and is equal to the diameter of an inner hole 2.3 of the lip type sealing ring 2.
And the diameter of the outer periphery 4b of the tightening ring 4 is equal to the diameter of the lower-section guide hole 7bb, the diameter of the lip-shaped seal ring mounting hole and the diameter of the outer circle 2.4 of the lip-shaped seal ring 2. A circumferential groove 4ba is provided on the outer periphery 4b of the fastening ring 4.
Two holding screws 5 respectively screw through corresponding holding screw hole 4ad and then protrude out of the hole wall of the lower section guide hole 7bb and extend into the ring groove 4ba but do not contact the outer surface of the vertical groove wall 4bab of the ring groove 4ba, so that the upper and lower limit positions of the holding ring 4 sliding in the guide hole of the guide sleeve 7 can be limited by the two holding screws 5, and the holding ring 4 can slide in the guide hole of the guide sleeve 7 but cannot axially escape.
When the lip type sealing ring 2 is installed, the lip type sealing ring 2 is reversely installed in the lower section guide hole 7bb of the guide sleeve 7, the lip type sealing ring 2 is reversely installed, so that the assembly is easy, and two sealing walls of the inner hole 2.3 and the outer circle 2.4 of the lip type sealing ring 2 cannot be damaged. At this time, due to the installation of the lip seal 2, the tightening ring 4 moves upward until it is stopped at the uppermost limit position by the two set screws 5.
The four fastening screws 6 are then screwed into the four fastening screw holes 7ac in the flange 7a without protruding too far out of the upper guide holes 7ba, so that the four fastening screws 6 do not fall out by the entire setting tool being moved, while the tips of the four fastening screws 6 are brought into contact with the upper end face of the fastening ring 4 without causing slipping of the fastening ring 4 or contact with the fastening ring 4.
Then, the guide sleeve 7 is mounted on the valve body 1, specifically: sleeving a central hole 7aa of a flange 7a, a guide hole of a guide part 7b, a fastening ring inner hole 4a of a fastening ring 4 and an inner hole 2.3 of a lip-shaped sealing ring 2 on a valve rod 3, pressing down the guide sleeve 7 to press the guide part 7b and the fastening ring 4 into a guide sleeve mounting hole 1aa, sleeving two stud holes 7ab on the flange 7a with corresponding studs 9 until the bottom surface of the flange 7a is contacted with the valve body 1, screwing two nuts 8 on the two studs 9 at the moment, and screwing the two nuts 8 to fix the flange 7a on the valve body 1.
As shown in fig. 5 and 6, the utility model discloses a valve rod lip seal instrument of packing into only needs four and the slow rotation of tight screw 6 simultaneously and the downstream with the circumference equipartition after the assembly is accomplished, promotes and the tight ring 4 downstream, and the downward movement and tight ring 4 with lip seal 2 steady push lip seal mounting hole 1ab in, it is spacing to and tight ring 4 up to two holding screws 5 for and tight ring 4 is located lower extreme position, lip seal 2 installs this moment and targets in place.
After the lip-shaped sealing ring 2 is installed in place, the stud 9 and the nut 8 are removed and loosened, and then the whole valve rod lip-shaped sealing ring installing tool is detached from the valve body 1, so that the step of installing the lip-shaped sealing ring 2 can be completed.
Finally, it is necessary to explain here:
the above embodiments are only used to further explain the technical solutions of the present invention in detail, and should not be interpreted as limiting the scope of the present invention; the non-essential modifications and adjustments made by those skilled in the art according to the above-mentioned disclosure belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a valve rod lip seal instrument of packing into, includes valve body and valve rod seted up valve rod hole, lip seal mounting hole and uide bushing mounting hole in the valve body, valve rod hole, lip seal mounting hole and uide bushing mounting hole set gradually and the diameter increases progressively in proper order by supreme down, the valve rod assembly in the valve rod hole and pass in proper order stretch out behind lip seal mounting hole and the uide bushing mounting hole the valve body, its characterized in that to still include:
the guide sleeve is provided with a flange plate which is fixed on the valve body when being installed, a central hole which is arranged in the center of the flange plate and is used for the valve rod to pass through, and a guide part which is inserted into the mounting hole of the guide sleeve when being installed, and a guide hole which is communicated with the central hole is arranged in the guide part; at least one tightening screw hole is formed in the circumferential direction of the flange plate, and the diameter of the circumference where the circle center of the at least one tightening screw hole is located is larger than the diameter of the central hole and smaller than the diameter of at least one part of the guide hole; the diameter of the central hole is matched with that of the valve rod;
the tightening ring is arranged in the guide hole in a sliding mode and limited in axial limit position through a set screw arranged on the guide part in the radial direction, and a tightening ring inner hole for the valve rod to penetrate through is formed in the tightening ring;
at least one clamping screw which extends into the guide hole after being screwed through the clamping screw hole; when the lip-shaped sealing ring is installed, the tail part of the tightening screw acts on the tightening ring to drive the tightening ring to move towards the direction of the installation hole of the lip-shaped sealing ring, and the lip-shaped sealing ring is pressed into the installation hole of the lip-shaped sealing ring.
2. The tool of claim 1, wherein the pilot bore is divided into an upper pilot bore and a lower pilot bore, wherein the upper pilot bore has a diameter greater than the lower pilot bore, and wherein the lower pilot bore has a diameter equal to the diameter of the lip seal mounting opening; the diameter of the circumference where the tightening screw hole is located is smaller than that of the upper-section guide hole.
3. The tool of claim 2, wherein the center of the tightening screw hole is located at a circumference having a diameter equal to the diameter of the lower guide hole.
4. The tool of claim 3, wherein a diameter of a circle where a center of the tightening screw hole is located plus a diameter of the tightening screw is smaller than a diameter of the upper guide hole.
5. The tool as claimed in claim 4, wherein a groove is formed in an outer periphery of the tightening ring, and the set screw is inserted into the groove.
6. The tool of claim 5, wherein the diameter of the internal bore of the gripping ring is a sliding fit with the diameter of the valve stem.
7. The valve stem lip seal installation tool of claim 6, wherein the tightening ring has an outer peripheral diameter equal to the diameter of the lower guide bore and the diameter of the lip seal mounting bore.
8. The tool as claimed in claim 7, wherein the flange has a number of bolt holes corresponding to the number of studs attached to the valve body; during installation, the studs penetrate through the corresponding bolt holes and are tightened by nuts, so that the flange plate is fixed on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220752606.0U CN217620316U (en) | 2022-03-31 | 2022-03-31 | Valve rod lip seal packing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220752606.0U CN217620316U (en) | 2022-03-31 | 2022-03-31 | Valve rod lip seal packing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217620316U true CN217620316U (en) | 2022-10-21 |
Family
ID=83647189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220752606.0U Active CN217620316U (en) | 2022-03-31 | 2022-03-31 | Valve rod lip seal packing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217620316U (en) |
-
2022
- 2022-03-31 CN CN202220752606.0U patent/CN217620316U/en active Active
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