CN217081643U - Packing compression structure for valve - Google Patents
Packing compression structure for valve Download PDFInfo
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- CN217081643U CN217081643U CN202220926434.4U CN202220926434U CN217081643U CN 217081643 U CN217081643 U CN 217081643U CN 202220926434 U CN202220926434 U CN 202220926434U CN 217081643 U CN217081643 U CN 217081643U
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- valve
- packing
- ring
- gland
- sealing
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Abstract
The utility model relates to a packing compact structure for valve, including valve body, case, valve rod, valve gap, the first end of valve rod is connected with the case after passing through the valve gap and stretching into the valve body, is equipped with the main seal groove on the valve gap and outside the valve rod, is equipped with the packing in the main seal groove, the gland, it is established on the valve gap; the telescopic sealing assembly is arranged on one side, close to the main sealing groove, of the gland, the first end of the telescopic sealing assembly is abutted with the packing, the second end of the telescopic sealing assembly is connected with the gland, and the telescopic sealing assembly can stretch along the depth direction of the main sealing groove; the gland compresses the telescopic sealing assembly, and the first end of the telescopic sealing assembly is always contacted with the packing; the utility model provides an among the prior art under high temperature high pressure environment, the unable filler that compresses tightly of fixed position's gland makes the leakproofness of valve receive the problem of influence.
Description
Technical Field
The utility model relates to the technical field of valves, concretely relates to pack compact structure for valve.
Background
A valve is a device for controlling the direction, pressure, and flow rate of a fluid in a fluid system, and is a device capable of controlling the flow rate of a medium (liquid, gas, or powder) in a pipe or equipment by flowing or stopping the medium.
Current valve includes the valve body, a valve core, the valve rod, the valve gap, the one end of valve rod is passed and is connected with the case in stretching into the valve body behind the valve gap, drive the opening and closing of case motion realization valve through the valve rod, in order to guarantee the leakproofness of valve, can set up the seal groove between valve gap and valve rod usually, set up the filler in the seal groove, the rethread gland compresses tightly the filler and realizes sealedly, but when the valve of this kind of structure was applied to under the high temperature high pressure environment, the valve can be by the influence of expend with heat and contract with cold, the seal groove can expand, and the position of gland is fixed, the gland just can't compress tightly the filler well this moment, make the leakproofness of valve influenced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a packing compact structure for valve has solved among the prior art under high temperature high pressure environment, and the unable gland that fixes in position compresses tightly the problem that the leakproofness of making the valve receives the influence of packing.
The technical scheme of the utility model is realized like this: a packing compaction structure for a valve comprises a valve body, a valve core, a valve rod and a valve cover, wherein a first end of the valve rod penetrates through the valve cover and then extends into the valve body to be connected with the valve core, a main sealing groove is formed in the valve cover and positioned outside the valve rod, packing is arranged in the main sealing groove,
a gland provided on the valve cover;
the telescopic sealing assembly is arranged on one side, close to the main sealing groove, of the gland, the first end of the telescopic sealing assembly is abutted with the packing, the second end of the telescopic sealing assembly is connected with the gland, and the telescopic sealing assembly can stretch along the depth direction of the main sealing groove;
wherein, the gland compresses tightly flexible seal assembly, and flexible seal assembly's first end contacts with the packing all the time.
By adopting the packing compressing structure for the valve, the packing in the main sealing groove is compressed by matching the gland and the telescopic sealing assembly, the packing is firstly loaded in the main sealing groove during installation, then the first end of the telescopic sealing assembly extends into the main sealing groove to be contacted with the packing, then the gland is covered at the second end of the telescopic sealing assembly, the gland is fixed on the valve cover by a fastener, and the tightness of the gland is adjusted to ensure that the telescopic sealing assembly is in a state of being extruded but still extensible or contractible, so that under the high-temperature and high-pressure environment, when the main sealing groove is expanded due to the influence of thermal expansion and contraction of the valve body and the valve cover, the telescopic sealing assembly can be properly extended to ensure that the telescopic sealing assembly is always contacted with the packing, and because the telescopic sealing assembly is in a compressed state during installation, the telescopic sealing assembly can still compress the packing at the moment, and the telescopic sealing assembly can be properly contracted in the environment with lower temperature, the packing is in a better sealing state.
The utility model discloses further set up to, flexible seal assembly includes:
a clamp ring abutting against the packing;
the adjusting ring is arranged on one side, away from the filler, of the compression ring, the first end of the adjusting ring is connected with the compression ring through a spring, and the second end of the adjusting ring is connected with the gland;
wherein, the distance between clamp ring and the adjustable ring can be adjusted.
The utility model discloses further set up to: the adjustable distance between the compression ring and the adjusting ring is 1mm-3 mm.
The utility model discloses further set up to: the first end of the adjusting ring is provided with an extending part, and a gap is reserved between the extending part and the compression ring.
The utility model discloses further set up to: a secondary sealing groove is formed between the extension part and the adjusting ring, and a sealing ring is arranged in the secondary sealing groove.
The utility model discloses further set up to: the sealing ring is made of a high polymer rubber material.
The utility model discloses further set up to: be equipped with the mounting groove on the adjustable ring outer wall, be equipped with the sealed tube in the mounting groove, sealed tube part is arranged in main seal groove.
The utility model has the advantages as follows:
1. by arranging the telescopic sealing assembly between the gland and the packing, the telescopic sealing assembly can be properly extended or contracted under an extreme environment, so that the packing can still be in a better sealing state under the condition that the main sealing groove is deformed, and the sealing effect of the valve is ensured;
2. the telescopic sealing assembly comprises a compression ring and an adjusting ring, and the adjustable distance between the compression ring and the adjusting ring is 1mm-3mm, so that the compression ring and the adjusting ring are adjusted in a small range, the adjustability of the telescopic sealing assembly is ensured, and the sealing stability is also ensured;
3. a secondary sealing groove is formed between the extension part and the adjusting ring, a sealing ring is arranged in the secondary sealing groove, and the sealing ring is always contacted with the compression ring and the adjusting ring in the process of adjusting the distance between the compression ring and the adjusting ring, so that the sealing performance of the telescopic sealing assembly is further ensured;
4. through setting up mounting groove and sealed tube, sealed tube portion is arranged in the primary seal groove simultaneously, can seal the notch of primary seal groove like this, has further improved the leakproofness of primary seal groove.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a part a of fig. 1.
The labels in the figures are:
1-valve body, 2-valve core, 3-valve rod, 4-valve cover, 5-packing, 6-gland, 7-clamp ring, 8-adjusting ring, 9-spring, 10-extension part, 11-secondary sealing groove, 12-sealing ring, 13-mounting groove, 14-sealing tube and 15-main sealing groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.
Example 1
As shown in fig. 1-2, the present embodiment discloses a packing compressing structure for a valve, including a valve body 1, a valve core 2, a valve rod 3, and a valve cover 4, wherein a first end of the valve rod 3 penetrates through the valve cover 4 and then extends into the valve body 1 to be connected with the valve core 2, a main sealing groove 15 is formed on the valve cover 4 and located outside the valve rod 3, a packing 5 is arranged in the main sealing groove 15, and a gland 6 is arranged on the valve cover 4; the telescopic sealing assembly is arranged on one side, close to the main sealing groove 15, of the gland 6, the first end of the telescopic sealing assembly is abutted against the packing 5, the second end of the telescopic sealing assembly is connected with the gland 6, and the telescopic sealing assembly can stretch along the depth direction of the main sealing groove 15; wherein, gland 6 compresses tightly flexible seal assembly, and flexible seal assembly's first end contacts with packing 5 all the time.
In the embodiment, a valve cavity is arranged inside the valve body 1, the valve core 2 is arranged in the valve cavity, the valve cover 4 is arranged on one side of the valve body 1, the first end of the valve rod 3 penetrates through the valve cover 4 and then extends into the valve cavity to be connected with the valve core 2, and the valve rod 3 drives the valve core 2 to rotate so as to realize the opening and closing of the valve; the gland 6 is fixed on the valve cover 4 through bolts, more than half of the volume of the main seal groove 15 is filled with the packing 5, and the telescopic seal assembly is arranged between the gland 6 and the packing 5;
in this embodiment, the telescopic sealing assembly includes a clamp ring 7 and an adjusting ring 8, the clamp ring 7 is used for contacting with the packing 5, the second end of the adjusting ring 8 is fixed on the gland 6, the telescopic sealing assembly is telescopic along the depth direction of the main sealing groove 15 by changing the distance between the clamp ring 7 and the adjusting ring 8, the first end of the adjusting ring 8 is connected with a spring 9, one end of the spring 9, which is far away from the adjusting ring 8, is connected with the clamp ring 7, after the valve is installed, the spring 9 between the clamp ring 7 and the adjusting ring 8 can still be extended and retracted, preferably, the distance adjusting range between the clamp ring 7 and the adjusting ring 8 is controlled to be 1mm-3mm, and the installation state of the clamp ring 7 and the adjusting ring 8 can be relatively stable within the range;
referring to fig. 2, the clamp ring 7 is a stepped ring structure, the first end of the adjusting ring 8 is a stepped ring structure matched with the clamp ring 7, the spring 9 is disposed outside the clamp ring 7 and the adjusting ring 8, an extending portion 10 is disposed inside the first end of the adjusting ring 8, a gap is formed between the extending portion 10 and the clamp ring 7, the gap is a limit distance that the clamp ring 7 and the adjusting ring 8 can approach, and the extending portion 10 also plays a role in limiting;
example 2
In addition to the characteristic structure of the foregoing embodiment, the present embodiment further includes: a secondary sealing groove 11 is formed between the extension part 10 and the side wall of the adjusting ring 8, and a sealing ring 12 is installed in the secondary sealing groove 11; when the distance between the adjusting ring 8 and the compression ring 7 is the largest, two end faces of the sealing ring 12 are respectively contacted with the adjusting ring 8 and the compression ring 7, and when the distance between the adjusting ring 8 and the compression ring 7 is reduced, the sealing ring is extruded and two end faces of the sealing ring 12 are respectively contacted with the adjusting ring 8 and the compression ring 7, so that the sealing property between the compression ring 7 and the adjusting ring 8 is improved;
in this embodiment, the seal ring 12 is made of a polymer rubber material, so that the seal ring 12 has better wear resistance and longer service life.
Example 3
In addition to the characteristic structure of the foregoing embodiment, the present embodiment further includes: the outer wall of the adjusting ring 8 is provided with a mounting groove 13, and a sealing pipe 14 is arranged in the mounting groove 13.
Referring to fig. 2, the mounting groove 13 is formed in the outer wall of the adjusting ring 8 along the circumferential direction of the adjusting ring 8, the sealing pipe 14 is corrugated, two ends of the sealing pipe 14 are respectively connected to two side walls opposite to the mounting groove 13, and the sealing pipe 14 is partially located in the main sealing groove 15, so that the notch of the main sealing groove 15 can be sealed, and impurities are prevented from entering the main sealing groove 15.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Claims (7)
1. A packing compaction structure for a valve comprises a valve body (1), a valve core (2), a valve rod (3) and a valve cover (4), wherein a first end of the valve rod (3) penetrates through the valve cover (4) and then extends into the valve body (1) to be connected with the valve core (2), a main sealing groove (15) is formed in the valve cover (4) and located outside the valve rod (3), and packing (5) is arranged in the main sealing groove (15);
it is characterized by also comprising:
a gland (6) provided on the valve cover (4);
the telescopic sealing assembly is arranged on one side, close to the main sealing groove (15), of the gland (6), the first end of the telescopic sealing assembly is abutted against the packing (5), the second end of the telescopic sealing assembly is connected with the gland (6), and the telescopic sealing assembly can stretch along the depth direction of the main sealing groove (15);
the gland (6) compresses the telescopic sealing assembly, and the first end of the telescopic sealing assembly is always in contact with the packing (5).
2. A packing press structure for a valve according to claim 1, wherein the telescoping seal assembly comprises:
a clamp ring (7) that abuts against the packing (5);
the adjusting ring (8) is arranged on one side, away from the packing (5), of the compression ring (7), the first end of the adjusting ring is connected with the compression ring (7) through a spring (9), and the second end of the adjusting ring is connected with the gland (6);
wherein the distance between the clamping ring (7) and the adjusting ring (8) can be adjusted.
3. A packing-compressing structure for a valve according to claim 2, wherein: the adjustable distance between the compression ring (7) and the adjusting ring (8) is 1mm-3 mm.
4. A packing-compressing structure for a valve according to claim 2, wherein: an extension part (10) is arranged at the first end of the adjusting ring (8), and a gap is reserved between the extension part (10) and the compression ring (7).
5. The packing press structure for a valve according to claim 4, wherein: a secondary sealing groove (11) is formed between the extension portion (10) and the adjusting ring (8), and a sealing ring (12) is arranged in the secondary sealing groove (11).
6. The packing press structure for a valve according to claim 5, wherein: the sealing ring (12) is made of a high polymer rubber material.
7. A packing-compressing structure for a valve according to claim 2, wherein: be equipped with mounting groove (13) on adjustable ring (8) outer wall, be equipped with sealing tube (14) in mounting groove (13), sealing tube (14) part is located main seal groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220926434.4U CN217081643U (en) | 2022-04-20 | 2022-04-20 | Packing compression structure for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220926434.4U CN217081643U (en) | 2022-04-20 | 2022-04-20 | Packing compression structure for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217081643U true CN217081643U (en) | 2022-07-29 |
Family
ID=82500684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220926434.4U Active CN217081643U (en) | 2022-04-20 | 2022-04-20 | Packing compression structure for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217081643U (en) |
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2022
- 2022-04-20 CN CN202220926434.4U patent/CN217081643U/en active Active
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