CN201748032U - Reciprocating type valve rod sealing device - Google Patents
Reciprocating type valve rod sealing device Download PDFInfo
- Publication number
- CN201748032U CN201748032U CN201020219448XU CN201020219448U CN201748032U CN 201748032 U CN201748032 U CN 201748032U CN 201020219448X U CN201020219448X U CN 201020219448XU CN 201020219448 U CN201020219448 U CN 201020219448U CN 201748032 U CN201748032 U CN 201748032U
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- valve rod
- diaphragm
- sealing device
- reciprocating type
- hole
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Abstract
The utility model relates to a reciprocating type valve rod sealing device which comprises a valve seat, a valve body and a cylinder bracket, wherein the valve seat is arranged on the bottom end of the valve body, the other end of the valve body is fixedly connected with the cylinder bracket, the top end of the valve seat is provided with a lower valve rod, and an upper valve rod is arranged in the cylinder bracket; the top end of the lower valve rod is provided with a lower stud, and a valve rod is arranged in the cylinder bracket; the top end of the upper valve rod is provided with an upper screw cavity, and a dish-shaped sealing film is arranged between the lower valve rod and the upper valve rod; the outer surface of the dish-shaped sealing film is provided with a striated pattern unevenness, the film center briquette is arranged between the sealing film and the upper valve rod, and the lower surface of the film center briquette and the inner surface of the concave part of the film are in the sliding fit; a T-shaped hole is arranged in the film center briquette and comprises a top hole and a lower hole which are mutually perpendicular, wherein the top hole is in sliding fit with the upper valve rod, and the lower hole is in sliding fit with an upper pole holder. The utility model has the advantages of favorable sealing effect, abrasion resistance, acid and alkali resistance, thermostability and high safety.
Description
Technical field
The utility model relates to a kind of valve rod sealing device, relates in particular to a kind of reciprocating type valve rod sealing device, specifically is applicable to the sealing of the reciprocating type valve rod of health level.
Background technique
At present, the reciprocating type valve rod of health level generally is applicable to the liquid flow valve of aseptic requirement, and this kind valve not only requires good sealing effect, and requires the valve channel in the valve short as far as possible, straight, the realization that influences aseptic requirement to prevent to produce bacterium.
The Chinese patent notice of authorization number is CN2675979Y, notice of authorization day is that the utility model patent on February 2nd, 2005 discloses the aseptic valve of a kind of highi degree of accuracy, comprise support, actuating motor is rack-mount, be provided with valve body in the support, the valve body bottom is provided with diaphragm, and manage a side and be provided with opening being positioned at material on the bracket, described opening is provided with diaphragm, described diaphragm is connected with valve rod one end, the other end of described valve rod contacts with an end of high-precision screw, and described high-precision screw is provided with guide rod, and the outer end of described guide rod is provided with position transducer.Though this model utility can keep the constant and reasonable distribution of fluid flow, can play the effect that ends of general valve again, its sealing effect is relatively poor, and can not effectively protect seal membrane, thereby further influences sealing effect.
The model utility content
The purpose of this utility model is to overcome defective and the problem that the sealing effect that exists in the prior art is relatively poor, can not effectively protect seal membrane.
For realizing above purpose, technical solution of the present utility model is: a kind of reciprocating type valve rod sealing device, comprise valve seat, valve body and cylinder support, described valve seat is arranged on the bottom of valve body, the other end of valve body is fixedlyed connected with the cylinder support, the top of described valve seat is provided with lower valve rod, and the inside of described cylinder support is provided with upper valve rod, is provided with seal membrane between lower valve rod and the upper valve rod.
Described seal membrane is the dish shape, comprises diaphragm upper side edge and diaphragm lower dent, is formed with the diaphragm angle between diaphragm upper side edge and the diaphragm lower dent.
The center position of described seal membrane is provided with mounting hole, runs through in the mounting hole to be provided with pylon, and the upper end of last pylon is provided with down double-screw bolt, fixedlys connected with the top of lower valve rod in the lower end of last pylon; The top of described upper valve rod is provided with the spiral shell chamber, last spiral shell chamber and the corresponding setting of following double-screw bolt.
Be provided with diaphragm center briquetting between described seal membrane and the upper valve rod, the lower surface of diaphragm center briquetting and the internal surface of diaphragm lower dent are slidingly matched, the inside of diaphragm center briquetting is provided with T type hole, T type hole comprises orthogonal top-portion apertures and lower hole, top-portion apertures and upper valve rod are slidingly matched, and lower hole and last pylon are slidingly matched.
Described last pylon is fixedlyed connected with the top of lower valve rod by following pylon.
The manufactured materials of described seal membrane is that PTFE teflon or its are material modified, and its outer surface is provided with the concavo-convex of water wave shape.
The size of described diaphragm angle is 90 degree-180 degree.
The size of described diaphragm angle is 120 degree.
Described seal membrane is a stratiform structure, be followed successively by two layers of PTFE teflon one deck, interlayer and PTFE teflon, the manufactured materials that described PTFE teflon one deck, PTFE teflon are two layers is the PTFE teflon, and the manufactured materials of interlayer is cotton, nylon wire, rubber or wire gaze.
Compared with prior art, the beneficial effects of the utility model are:
1. because the lower valve rod in a kind of reciprocating type valve rod sealing device of the utility model is respectively arranged with mutual corresponding following double-screw bolt and last spiral shell chamber with upper valve rod, and between lower valve rod and upper valve rod, be provided with the seal membrane of dish shape, the manufactured materials of sealing diaphragm is that PTFE teflon or its are material modified, and its outer surface is provided with the concavo-convex of water wave shape, good sealing effect not only, and wear-resisting wiping, acid resistant alkali, high temperature resistant, in addition, can also be designed to stratiform structure to the sealing diaphragm, further strengthen its wear-resisting effect, and can extend working time.Therefore sealing effect of the present utility model is better, durability is higher.
2. because a kind of reciprocating type valve rod sealing device of the utility model is provided with diaphragm center briquetting between seal membrane and upper valve rod, and briquetting inner top-portion apertures and the upper valve rod that is provided with in diaphragm center is slidingly matched, lower hole and last pylon are slidingly matched, and this kind structural design can prevent effectively that upper valve rod from destroying seal membrane when to-and-fro motion.Therefore Security of the present utility model is higher.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of seal membrane in the utility model.
Among the figure: valve seat 1, valve body 2, cylinder support 3, lower valve rod 4, upper valve rod 5, seal membrane 6, diaphragm upper side edge 61, diaphragm lower dent 62, diaphragm angle 63, PTFE teflon one deck 64, interlayer 65, two layer 66 of PTFE teflon, mounting hole 7, last pylon 8, following double-screw bolt 9, last spiral shell chamber 10, diaphragm center briquetting 11, T type hole 12, top-portion apertures 121, lower hole 122, following pylon 13.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail
Referring to Fig. 1, a kind of reciprocating type valve rod sealing device, comprise valve seat 1, valve body 2 and cylinder support 3, valve seat 1 is arranged on the bottom of valve body 2, the other end of valve body 2 can be fixedlyed connected by construction bolt with cylinder support 3, the top of valve seat 1 is provided with lower valve rod 4, is provided with upper valve rod 5 in the inside of cylinder support 3, is provided with seal membrane 6 between lower valve rod 4 and the upper valve rod 5.
The manufactured materials of preferred seal membrane 6 is that PTFE teflon or its are material modified, but this kind material acid resistant alkali, high temperature resistant, and preferably the outer surface of seal membrane 6 is provided with the concavo-convex of water wave shape, and the concaveconvex structure of water wave shape can strengthen sealing effect.
The structure of preferred seal membrane 6 is a stratiform structure, be followed successively by PTFE teflon one deck 64, interlayer 65 and PTFE teflon two layer 66, the manufactured materials that PTFE teflon one deck 64, PTFE teflon are two layer 66 is the PTFE teflon, and the manufactured materials of interlayer 65 is cotton, nylon wire, rubber or wire gaze.This kind design not only can strengthen the sealing effect of seal membrane 6, and can strengthen its elasticity and crushing resistance, thereby improves its Security.
The center position of seal membrane 6 is provided with mounting hole 7, run through in the mounting hole 7 and be provided with pylon 8, the upper end of last pylon 8 is provided with down double-screw bolt 9, fixedly connected with the top of lower valve rod 4 in the lower end of last pylon 8, the top of upper valve rod 5 is provided with spiral shell chamber 10, last spiral shell chamber 10 and following double-screw bolt 9 corresponding settings, during installation, reversing respectively can be fixedly connected.
Be provided with diaphragm center briquetting 11 between preferred seal membrane 6 and the upper valve rod 5; the shape of diaphragm center briquetting 11 may be selected to be ingot-shaped; the internal surface of its lower surface and diaphragm lower dent 62 is slidingly matched; the inside of diaphragm center briquetting 11 is provided with T type hole 12; T type hole 12 comprises orthogonal top-portion apertures 121 and lower hole 122; top-portion apertures 121 is slidingly matched with upper valve rod 5; lower hole 122 is slidingly matched with last pylon 8; the manufactured materials of diaphragm center briquetting 11 can be soft plastic; rubber; cotton or wire gaze etc.; not only has certain rigidity; and have good elasticity, thus realize the effect of protection seal membrane 6, improve its Security.
The utility model is good sealing effect not only, and wear-resisting wiping, acid resistant alkali, high temperature resistant, Security is higher.
The above only is a better embodiment of the present utility model; protection domain of the present utility model does not exceed with above-mentioned mode of execution; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (9)
1. reciprocating type valve rod sealing device, comprise valve seat (1), valve body (2) and cylinder support (3), described valve seat (1) is arranged on the bottom of valve body (2), the other end of valve body (2) is fixedlyed connected with cylinder support (3), it is characterized in that: the top of described valve seat (1) is provided with lower valve rod (4), the inside of described cylinder support (3) is provided with upper valve rod (5), is provided with seal membrane (6) between lower valve rod (4) and the upper valve rod (5).
2. a kind of reciprocating type valve rod sealing device according to claim 1, it is characterized in that: described seal membrane (6) is the dish shape, comprise diaphragm upper side edge (61) and diaphragm lower dent (62), be formed with diaphragm angle (63) between diaphragm upper side edge (61) and the diaphragm lower dent (62).
3. a kind of reciprocating type valve rod sealing device according to claim 1 and 2, it is characterized in that: the center position of described seal membrane (6) is provided with mounting hole (7), run through in the mounting hole (7) and be provided with pylon (8), the upper end of last pylon (8) is provided with down double-screw bolt (9), fixedlys connected with the top of lower valve rod (4) in the lower end of last pylon (8); The top of described upper valve rod (5) is provided with spiral shell chamber (10), last spiral shell chamber (10) and the corresponding setting of following double-screw bolt (9).
4. a kind of reciprocating type valve rod sealing device according to claim 3, it is characterized in that: be provided with diaphragm center briquetting (11) between described seal membrane (6) and the upper valve rod (5), the internal surface of the lower surface of diaphragm center briquetting (11) and diaphragm lower dent (62) is slidingly matched, the inside of diaphragm center briquetting (11) is provided with T type hole (12), T type hole (12) comprises orthogonal top-portion apertures (121) and lower hole (122), top-portion apertures (121) is slidingly matched with upper valve rod (5), and lower hole (122) is slidingly matched with last pylon (8).
5. a kind of reciprocating type valve rod sealing device according to claim 4 is characterized in that: described last pylon (8) is fixedlyed connected with the top of lower valve rod (4) by following pylon (13).
6. a kind of reciprocating type valve rod sealing device according to claim 3 is characterized in that: the manufactured materials of described seal membrane (6) is that PTFE teflon or its are material modified, and its outer surface is provided with the concavo-convex of water wave shape.
7. a kind of reciprocating type valve rod sealing device according to claim 3 is characterized in that: the size of described diaphragm angle (63) is 90 degree-180 degree.
8. a kind of reciprocating type valve rod sealing device according to claim 7 is characterized in that: the size of described diaphragm angle (63) is 120 degree.
9. a kind of reciprocating type valve rod sealing device according to claim 3, it is characterized in that: described seal membrane (6) is stratiform structure, be followed successively by PTFE teflon one deck (64), interlayer (65) and two layers of PTFE teflon (66), the manufactured materials of described PTFE teflon one deck (64), PTFE teflon two layers (66) is the PTFE teflon, and the manufactured materials of interlayer (65) is cotton, nylon wire, rubber or wire gaze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020219448XU CN201748032U (en) | 2010-06-08 | 2010-06-08 | Reciprocating type valve rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020219448XU CN201748032U (en) | 2010-06-08 | 2010-06-08 | Reciprocating type valve rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201748032U true CN201748032U (en) | 2011-02-16 |
Family
ID=43582710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020219448XU Expired - Lifetime CN201748032U (en) | 2010-06-08 | 2010-06-08 | Reciprocating type valve rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201748032U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956868A (en) * | 2010-06-08 | 2011-01-26 | 昆山新莱洁净应用材料股份有限公司 | Reciprocating valve rod sealing device |
| CN101956867A (en) * | 2010-06-08 | 2011-01-26 | 昆山新莱洁净应用材料股份有限公司 | Diaphragm seal device for reciprocating type valve rod |
-
2010
- 2010-06-08 CN CN201020219448XU patent/CN201748032U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956868A (en) * | 2010-06-08 | 2011-01-26 | 昆山新莱洁净应用材料股份有限公司 | Reciprocating valve rod sealing device |
| CN101956867A (en) * | 2010-06-08 | 2011-01-26 | 昆山新莱洁净应用材料股份有限公司 | Diaphragm seal device for reciprocating type valve rod |
| CN101956868B (en) * | 2010-06-08 | 2012-08-22 | 昆山新莱洁净应用材料股份有限公司 | Reciprocating valve rod sealing device |
| CN101956867B (en) * | 2010-06-08 | 2013-04-03 | 昆山新莱洁净应用材料股份有限公司 | Diaphragm seal device for reciprocating type valve rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110216 Effective date of abandoning: 20120822 |