CN101956867B - Diaphragm seal device for reciprocating type valve rod - Google Patents
Diaphragm seal device for reciprocating type valve rod Download PDFInfo
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- CN101956867B CN101956867B CN 201010195049 CN201010195049A CN101956867B CN 101956867 B CN101956867 B CN 101956867B CN 201010195049 CN201010195049 CN 201010195049 CN 201010195049 A CN201010195049 A CN 201010195049A CN 101956867 B CN101956867 B CN 101956867B
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- valve rod
- diaphragm
- reciprocating type
- pylon
- seal device
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Abstract
The invention provides a diaphragm seal device for a reciprocating type valve rod. The device 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; a lower valve rod is arranged on the top of the valve seat; a lower stud is arranged on the top of the lower valve rod; an upper valve rod is arranged inside the cylinder bracket; an upper screw cavity is arranged on the top of the upper valve rod; a zigzag seal diaphragm is arranged between the upper valve rod and the lower valve rod; a diaphragm central briquette is arranged between the seal diaphragm and the upper valve rod; the lower surface of the diaphragm central briquette and the inner surface of the concave part of the diaphragm are in sliding fit; a T-shaped hole is arranged inside the diaphragm central briquette and comprises a top hole and a lower hole which are vertical to each other; and the top hole and the upper valve rod are in sliding fit, and the lower hole and an upper stand are in sliding fit. The device has the advantages of good seal effect, friction resistance, acid and alkali resistance, high temperature resistance and higher safety.
Description
Technical field
The present invention relates to a kind of valve rod sealing device, relate in particular to a kind of diaphragm seal device of reciprocating type valve rod, specifically be applicable to the sealing of the reciprocating type valve rod of sanitation-grade.
Background technique
At present, the reciprocating type valve rod of sanitation-grade 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 as far as possible short, straight, affects the realization of aseptic requirement to prevent 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 a kind of high precision asepsis valve, 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.Although this model utility can keep the constant and reasonable distribution of fluid flow, can play again the cut-off effect of general valve, its sealing effect is relatively poor, and can not effectively protect seal membrane, thereby further affects sealing effect.
Summary of the invention
The objective of the invention is to overcome the sealing effect that exists in the prior art is relatively poor, can not effectively protect seal membrane defective and problem, the diaphragm seal device that a kind of sealing effect is better, can effectively protect the reciprocating type valve rod of seal membrane is provided.
For realizing above purpose, technical solution of the present invention is: a kind of diaphragm seal device of reciprocating type valve rod, 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 fixedly connected with the cylinder support, be provided with lower valve rod on the top of described valve seat, 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 comprises diaphragm upper side edge and diaphragm lower dent, evenly is provided with laciniation between diaphragm upper side edge and the diaphragm lower dent, and to face mutually the fleam that forms between the sawtooth on the laciniation be acute angle.
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 upper pylon is provided with lower double-screw bolt, and the lower end of upper pylon is fixedly connected with the top of lower valve rod; The top of described upper valve rod is provided with the spiral shell chamber, upper spiral shell chamber and the corresponding setting of lower 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-shaped hole, T-shaped hole comprises orthogonal top-portion apertures and lower hole, top-portion apertures and upper valve rod are slidingly matched, and lower hole and upper pylon are slidingly matched.
Described upper pylon is fixedly connected with the top of lower valve rod by lower pylon.
The manufactured materials of described seal membrane is that PTFE teflon or its are material modified, and is provided with the concavo-convex of water wave shape on its outer surface.
The size of described fleam is 10 degree-80 degree.
The size of described fleam is 45 degree.
Compared with prior art, beneficial effect of the present invention is:
1. because the lower valve rod in the diaphragm seal device of a kind of reciprocating type valve rod of the present invention is respectively arranged with mutual corresponding lower double-screw bolt and upper spiral shell chamber with upper valve rod, and between lower valve rod and upper valve rod, be provided with jagged seal membrane, the manufactured materials of sealing diaphragm is that PTFE teflon or its are material modified, and its profile is laciniation, good sealing effect not only, wear-resisting wiping, acid resistant alkali, high temperature resistant, and extensibility is good, wear-resistant, can not reduce owing to service time is long the material quality of seal membrane, thereby can not cause sealing effect to descend, and then extend working time.Therefore sealing effect of the present invention is better, durability is higher.
2. because the diaphragm seal device of a kind of reciprocating type valve rod of the present invention is provided with diaphragm center briquetting between jagged seal membrane and upper valve rod, and briquetting inner top-portion apertures and the upper valve rod that arranges in diaphragm center is slidingly matched, lower hole and upper 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 invention is higher.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of seal membrane among the present invention.
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, fleam 63, laciniation 64, mounting hole 7, upper pylon 8, lower double-screw bolt 9, upper spiral shell chamber 10, diaphragm center briquetting 11, T-shaped hole 12, top-portion apertures 121, lower hole 122, lower pylon 13.
Embodiment
The present invention is further detailed explanation below in conjunction with description of drawings and embodiment
Referring to Fig. 1-Fig. 2, a kind of diaphragm seal device of reciprocating type valve rod, 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 fixedly connected with by construction bolt with cylinder support 3, be provided with lower valve rod 4 on the top of valve seat 1, be provided with upper valve rod 5 in the inside of cylinder support 3, be provided with seal membrane 6 between lower valve rod 4 and the upper valve rod 5.
Be laciniation particularly in seal membrane 6 among the present invention, comprise the diaphragm upper side edge 61 of level and recessed diaphragm lower dent 62, evenly be provided with laciniation 64 between diaphragm upper side edge 61 and the diaphragm lower dent 62, and face mutually the fleam 63 that forms between the sawtooth on the laciniation 64 and be acute angle, the size of preferred fleam 63 is 10 degree-80 degree, the size of preferred fleam 63 is 45 degree again, and the diaphragm upper side edge 61 of the seal membrane 6 both sides piece that is fixed grips.
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.
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 upper pylon 8 is provided with lower double-screw bolt 9, the lower end of upper pylon 8 is fixedly connected with the top of lower valve rod 4, the top of upper valve rod 5 is provided with spiral shell chamber 10, upper spiral shell chamber 10 and lower double-screw bolt 9 corresponding settings during installation, are reversed respectively and can be fixedly connected with.
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-shaped hole 12; T-shaped 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 upper pylon 8; the manufactured materials of diaphragm center briquetting 11 can be soft plastic; rubber; cotton or wire gaze etc.; not only has certain hardness; and have good elasticity, thus realize the effect of protection seal membrane 6, improve its Security.
Preferred upper pylon 8 is fixedly connected with the top of lower valve rod 4 by lower pylon 13.
The present invention is good sealing effect not only, and wear-resisting wiping, acid resistant alkali, high temperature resistant, Security is higher.
The above only is preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (6)
1. the diaphragm seal device of a reciprocating type valve rod, 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 fixedly connected with by construction bolt with cylinder support (3), it is characterized in that: be provided with lower valve rod (4) on the top of described valve seat (1), the inside of described cylinder support (3) is provided with upper valve rod (5), be provided with seal membrane (6) between lower valve rod (4) and the upper valve rod (5), 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 upper pylon (8) is provided with lower double-screw bolt (9), and the lower end of upper pylon (8) is fixedly connected with the top of lower valve rod (4); The lower end of described upper valve rod (5) is provided with spiral shell chamber (10), upper spiral shell chamber (10) and the corresponding setting of lower double-screw bolt (9), be provided with diaphragm center briquetting (11) between described seal membrane (6) and the upper valve rod (5), diaphragm center briquetting (11) be shaped as ingot-shaped, 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-shaped hole (12), T-shaped 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 upper pylon (8).
2. the diaphragm seal device of a kind of reciprocating type valve rod according to claim 1, it is characterized in that: described seal membrane (6) comprises diaphragm upper side edge (61) and diaphragm lower dent (62), evenly be provided with laciniation (64) between diaphragm upper side edge (61) and the diaphragm lower dent (62), and face mutually the fleam (63) that forms between the sawtooth on the laciniation (64) and be acute angle.
3. the diaphragm seal device of a kind of reciprocating type valve rod according to claim 1, it is characterized in that: described upper pylon (8) is fixedly connected with by the top of lower pylon (13) with lower valve rod (4).
4. the diaphragm seal device of a kind of reciprocating type valve rod according to claim 1 and 2, it is characterized in that: the manufactured materials of described seal membrane (6) is the PTFE teflon.
5. the diaphragm seal device of a kind of reciprocating type valve rod according to claim 2 is characterized in that: the size of described fleam (63) is 10 degree-80 degree.
6. the diaphragm seal device of a kind of reciprocating type valve rod according to claim 5 is characterized in that: the size of described fleam (63) is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010195049 CN101956867B (en) | 2010-06-08 | 2010-06-08 | Diaphragm seal device for reciprocating type valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010195049 CN101956867B (en) | 2010-06-08 | 2010-06-08 | Diaphragm seal device for reciprocating type valve rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101956867A CN101956867A (en) | 2011-01-26 |
| CN101956867B true CN101956867B (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010195049 Active CN101956867B (en) | 2010-06-08 | 2010-06-08 | Diaphragm seal device for reciprocating type valve rod |
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| Country | Link |
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| CN (1) | CN101956867B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2937679Y (en) * | 2006-08-11 | 2007-08-22 | 广东万和集团有限公司 | Gas separation electric control valve |
| CN201416643Y (en) * | 2009-05-20 | 2010-03-03 | 泰安凯瑞特包装材料有限公司 | Cutoff valve for pharmacy |
| 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 |
| CN201748031U (en) * | 2010-06-08 | 2011-02-16 | 昆山新莱洁净应用材料股份有限公司 | Diaphragm-type sealing device of reciprocating-type valve rod |
| CN201748032U (en) * | 2010-06-08 | 2011-02-16 | 昆山新莱洁净应用材料股份有限公司 | Reciprocating type valve rod sealing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1522728B1 (en) * | 2003-10-08 | 2007-07-11 | Pacific Industrial Co., Ltd. | Pressure control valve |
-
2010
- 2010-06-08 CN CN 201010195049 patent/CN101956867B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2937679Y (en) * | 2006-08-11 | 2007-08-22 | 广东万和集团有限公司 | Gas separation electric control valve |
| CN201416643Y (en) * | 2009-05-20 | 2010-03-03 | 泰安凯瑞特包装材料有限公司 | Cutoff valve for pharmacy |
| 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 |
| CN201748031U (en) * | 2010-06-08 | 2011-02-16 | 昆山新莱洁净应用材料股份有限公司 | Diaphragm-type sealing device of reciprocating-type valve rod |
| CN201748032U (en) * | 2010-06-08 | 2011-02-16 | 昆山新莱洁净应用材料股份有限公司 | Reciprocating type valve rod sealing device |
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| Publication number | Publication date |
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| CN101956867A (en) | 2011-01-26 |
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