CN202746747U - Self-compensating double packing seal structure - Google Patents
Self-compensating double packing seal structure Download PDFInfo
- Publication number
- CN202746747U CN202746747U CN 201220430516 CN201220430516U CN202746747U CN 202746747 U CN202746747 U CN 202746747U CN 201220430516 CN201220430516 CN 201220430516 CN 201220430516 U CN201220430516 U CN 201220430516U CN 202746747 U CN202746747 U CN 202746747U
- Authority
- CN
- China
- Prior art keywords
- stuffing box
- valve rod
- packing
- valve body
- seal structure
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a self-compensating double packing seal structure. The self-compensating double packing seal structure comprises a valve body (1), a valve rod (2) mounted on the valve body (1), a packing box A (3) sleeved on the valve rod (2) and fixed to the valve body (1), and a packing box B (4) sleeved on the valve rod (2) and fixed to the packing box A (3), wherein compensation springs (8) are arranged in both the packing box A (3) and the packing box B (4). Packing (6) is compressed by the pushing forces of the compensation springs (8) to be kept to be sealed with the valve rod (2) all the time; and the packing box A (3) is taken as a main sealing part in the using process, and the packing box B (4) takes effect of auxiliary seal after the seal of the packing box A (3) is failure, so that a conveying medium can be effectively prevented from leaking.
Description
Technical field
The utility model relates to a kind of ball valve sealing structure, is specifically related to the two packing seal structure of a kind of self compensation.
Background technique
Two kinds of sealing configurations of the general employing of traditional ball valve sealing, a kind of is the sealing of O type circle, another kind is packing seal.
The sealability of O type circle sealing is good, but when design O type circle, and the selection of its material is had very large constraint, and a lot of materials are not suitable for makes O type circle.This causes O type circle can't be used for the occasion of high temperature, severe toxicity or highly corrosive.
Existing stuffing seal structure is as follows: be disposed with from bottom to up valve rod mounting hole section and filler mounting hole section in the valve body, valve rod is installed in the valve rod mounting hole section, filler be socketed on the valve rod and position filler mounting hole section in, Gland is socketed on the valve rod and is positioned at the top of filler, Gland is bolted on the valve body, and packing press ring is arranged between Gland and the filler.
Existing stuffing seal has following shortcoming:
1. do not have to be used for reducing the device of friction factor between valve rod and the valve body, in the switching process of valve rod, the frictional force between valve rod and the valve body is large, will cause at short notice the wearing and tearing of valve rod and valve body, reduces the sealability of device;
2. in use for some time, filler can produce wearing and tearing to a certain extent, and the filler after the wearing and tearing can't compensation sealing, causes high temperature media to reveal from valve stem seal, damages actuator.
The existing seal arrangement effective sealing time is short, and after seal failure, the high temperature of leakage, severe toxicity or high-corrosion medium may damage operator, very easily lead to security incident.Stop continually produce changing the valve seal parts or sealed member adjusted and not only cause greatly inconvenience, also improved cost of production.
The model utility content
The purpose of this utility model namely is to overcome the occasion that existing ball valve sealing structure is not suitable for high temperature, severe toxicity or highly corrosive, and shortcoming that can't automatic compensation sealing after easily wearing and tearing and wearing and tearing provides a kind of self compensation two packing seal structure.
The purpose of this utility model is achieved through the following technical solutions:
The two packing seal structure of self compensation, it comprises valve body and is installed in valve rod on the valve body, it also comprises and is enclosed within on the valve rod and is fixed on Stuffing box A on the valve body, is enclosed within on the valve rod and is fixed on Stuffing box B on the Stuffing box A.
Particularly, be disposed with from bottom to up the bearing, filler, filler pad, counterbalance spring, packing press ring and the Gland that are enclosed within on the valve rod among the described Stuffing box A, Gland is bolted among the Stuffing box A and is close to packing press ring;
Be disposed with from bottom to up the bearing, filler, filler pad, counterbalance spring, packing press ring and the Gland that are enclosed within on the valve rod among the described Stuffing box B, Gland is bolted among the Stuffing box A and is close to packing press ring.
Further, the contacting point of described Stuffing box A and valve body is provided with gasket seal A.
Further, the contacting point of described Stuffing box B and Stuffing box A is provided with gasket seal B.
Particularly, described counterbalance spring is wavy spring.
For implementing better the utility model, be provided with bearing between described valve rod and the valve body.
Advantage of the present utility model and beneficial effect are:
1. be provided with two Stuffing boxes of Stuffing box A and Stuffing box B, in use with Stuffing box A as main Sealing, after Stuffing box A seal failure, Stuffing box B plays the effect of auxiliary seal, can effectively prevent the leakage of fed sheet of a media, be applicable to the conveying of severe toxicity and high-corrosion medium, guarantee the Security of course of conveying;
2. be provided with counterbalance spring in the Stuffing box, after frequent switching caused the filler wearing and tearing, the thrust meeting compressible filler of counterbalance spring made filler keep sealing state with valve rod all the time;
3. be provided with bearing, can effectively reduce the friction torque between valve rod and valve body and the Stuffing box, increased the working life of valve rod, valve body and Stuffing box, strengthened the stability of valve rod in operation process;
4. the contact segment of Stuffing box A and Stuffing box B and valve body is respectively arranged with gasket seal A and gasket seal B, has guaranteed the reliability of sealing.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Wherein, the component name that reference character is corresponding is called:
The 1-valve body, 2-valve rod, 3-Stuffing box A, 4-Stuffing box B, 5-bearing, 6-filler, 7-filler pad, 8-counterbalance spring, 9-packing press ring, 10-Gland, 11-gasket seal A, 12-gasket seal B.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and protection domain of the present utility model is not limited to the following stated.
Embodiment:
As shown in Figure 1, the two packing seal structure of self compensation, it comprises valve body 1 and is installed in valve rod 2 on the valve body 1, it also comprises and is enclosed within on the valve rod 2 and is fixed on Stuffing box A3 on the valve body 1, is enclosed within on the valve rod 2 and is fixed on Stuffing box B4 on the Stuffing box A3.
Be disposed with from bottom to up the bearing 5, filler 6, filler pad 7, counterbalance spring 8, packing press ring 9 and the Gland 10 that are enclosed within on the valve rod 2 among the described Stuffing box A3, Gland 10 is bolted among the Stuffing box A3 and is close to packing press ring 9;
Be disposed with from bottom to up the bearing 5, filler 6, filler pad 7, counterbalance spring 8, packing press ring 9 and the Gland 10 that are enclosed within on the valve rod 2 among the described Stuffing box B4, Gland 10 is bolted among the Stuffing box A3 and is close to packing press ring 9.
The contacting point of described Stuffing box A3 and valve body 1 is provided with gasket seal A11.The contacting point of described Stuffing box B4 and Stuffing box A3 is provided with gasket seal B12.
Be provided with bearing 5 between described valve rod 2 and the valve body 1.
When assembling, tighten the fixedly bolt of Gland 10, Gland can be compressed counterbalance spring 8 and filler 6.At this moment, good seal between filler 6 and the valve rod 2.Using after a period of time, because filler 6 wearing and tearing, at this moment, under the effect of the counterbalance spring 8 of compression, filler 6 is again compressed, so that be in all the time the state of excellent sealing between filler 6 and the valve rod 2.When Stuffing box A3 lost or partly loses seal action, the Stuffing box B4 that is fixed on the Stuffing box A3 can play the effect that replenishes sealing, guaranteed that medium does not leak.
In the present embodiment, counterbalance spring 8 preferred load and amount of deformation are all little, are fit to apply the wavy spring of axial precompression.
As mentioned above, just can realize preferably the utility model.
Claims (6)
1. two packing seal structure of self compensation, it comprises valve body (1) and is installed in valve rod (2) on the valve body (1), it is characterized in that: it comprises that also to be enclosed within valve rod (2) upper and be fixed on Stuffing box A(3 on the valve body (1)), be enclosed within valve rod (2) upper and be fixed on Stuffing box A(3) on Stuffing box B(4).
2. two packing seal structure of self compensation according to claim 1, it is characterized in that: be disposed with from bottom to up the bearing (5), filler (6), filler pad (7), counterbalance spring (8), packing press ring (9) and the Gland (10) that are enclosed within on the valve rod (2) described Stuffing box A(3), Gland (10) is bolted on Stuffing box A(3) in and be close to packing press ring (9);
Described Stuffing box B(4) be disposed with from bottom to up the bearing (5), filler (6), filler pad (7), counterbalance spring (8), packing press ring (9) and the Gland (10) that are enclosed within on the valve rod (2) in, Gland (10) is bolted on Stuffing box A(3) in and be close to packing press ring (9).
3. two packing seal structure of self compensation according to claim 2, it is characterized in that: described Stuffing box A(3) contacting point with valve body (1) is provided with gasket seal A(11).
4. the two packing seal structure of self compensation according to claim 2 is characterized in that: described Stuffing box B(4) with Stuffing box A(3) the contacting point be provided with gasket seal B(12).
5. two packing seal structure of self compensation according to claim 2, it is characterized in that: described counterbalance spring (8) is wavy spring.
6. the two packing seal structure of each described self compensation is characterized in that: be provided with bearing (5) between described valve rod (2) and the valve body (1) according to claim 1 ~ 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220430516 CN202746747U (en) | 2012-08-28 | 2012-08-28 | Self-compensating double packing seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220430516 CN202746747U (en) | 2012-08-28 | 2012-08-28 | Self-compensating double packing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746747U true CN202746747U (en) | 2013-02-20 |
Family
ID=47706146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220430516 Expired - Fee Related CN202746747U (en) | 2012-08-28 | 2012-08-28 | Self-compensating double packing seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704694A (en) * | 2017-02-08 | 2017-05-24 | 江苏神通阀门股份有限公司 | Maintenance-free stuffing box structure of valve |
-
2012
- 2012-08-28 CN CN 201220430516 patent/CN202746747U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704694A (en) * | 2017-02-08 | 2017-05-24 | 江苏神通阀门股份有限公司 | Maintenance-free stuffing box structure of valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Self-compensating double packing seal structure Effective date of registration: 20131010 Granted publication date: 20130220 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Sichuan SUC Flow Control Equipment Co., Ltd. Registration number: 2013510000004 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150123 Granted publication date: 20130220 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Sichuan SUC Flow Control Equipment Co., Ltd. Registration number: 2013510000004 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20150828 |
|
| EXPY | Termination of patent right or utility model |