CN203189782U - Medical diaphragm valve - Google Patents
Medical diaphragm valve Download PDFInfo
- Publication number
- CN203189782U CN203189782U CN 201320189320 CN201320189320U CN203189782U CN 203189782 U CN203189782 U CN 203189782U CN 201320189320 CN201320189320 CN 201320189320 CN 201320189320 U CN201320189320 U CN 201320189320U CN 203189782 U CN203189782 U CN 203189782U
- Authority
- CN
- China
- Prior art keywords
- valve
- annular convex
- barrier film
- spool
- valve body
- 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
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Abstract
The utility model relates to a medical diaphragm valve which mainly solves the problem that when an existing diaphragm valve is used, media are prone to remaining between a diaphragm and a valve body gap and even flow into a valve cover to corrode a valve element and a valve rod. A wall face, adjacent to a moving channel of a valve element (4), of a valve body (7) is provided with a ring-shaped protruded shoulder (71), and the lower side, corresponding to the outer ring of the ring-shaped protruded shoulder (71), of a diaphragm (6) is provided with a ring-shaped protruded rib (61). The ring-shaped protruded rib (61) is matched with the ring-shaped protruded shoulder (71) in a sealing mode. The medical diaphragm valve improves sealing performance, smoothness and stability.
Description
Technical field
The utility model relates to a kind of stop valve, refers in particular to a kind of medical diaphragm valve.
Background technique
Membrane valve is a kind of stop valve of special shape, and its open-shut device is a barrier film made from soft material, and it separates body cavity and valve gap inner chamber.The characteristics of membrane valve are as follows: 1. with barrier film lower body inner chamber and upper valve cap inner chamber are separated, make to be positioned at parts such as the valve rod put on the barrier film, flap and not to be subjected to dielectric corrosion, and can not produce medium and leak outside, saved filler and sealing pair structure.2. adopt flexible barrier materials such as rubber or plastics to make barrier film, sealing is better.Because barrier film is easily damaged parts, should looks operating mode and dielectric property and regularly replace.Limited by diaphragm material, membrane valve is applicable to the occasion that low pressure and temperature are not high.
The diversity of lining material can be selected to various media, has good anti-corrosion property.5. barrier film is replaceable, and maintenance cost is low.
Prior art septation valve includes membrane valve final controlling element, diaphragm valve and membrane valve valve body, wherein be the plane on the membrane valve valve body and the side face that diaphragm valve contacts, corresponding diaphragm valve is provided with sealing and strengthens protruding footpath, internal memory in its protruding footpath when the protruding footpath of sealing is the valve body contact like this forms the slit stagnant area, some liquids are trapped in this slit stagnant area easily, pollute.
The model utility content
In order to overcome deficiency and the defective in the background technique, the utility model provides a kind of medical diaphragm valve, mainly solves existing membrane valve and exists medium easily to residue between barrier film and the valve body slit in use the time, even flow into the problem that valve gap corrodes spool and valve rod.
The technical solution of the utility model is: a kind of medical diaphragm valve, comprise valve body, valve gap, handwheel, valve rod and spool, be provided with the barrier film with valve body and spool separation between described valve body and the valve gap, contiguous spool active tunnel wall is provided with annular convex shoulder on the described valve body, fit and be provided with annular convex rib in the corresponding annular convex shoulder of described barrier film downside outer ring, described annular convex rib and described annular convex shoulder are sealed and matched.
The cross section taper of described annular convex shoulder, the cross section of described annular convex rib are inverted cone, and described annular convex shoulder and annular convex rib are conical surface compression fit.
Described valve body is provided with inlet passage and outlet passage, is provided with a lug boss between described inlet passage and the outlet passage, and described lug boss upper end is provided with the spherical concave surface that matches with described barrier film.
Described barrier film and spool are bolted to connection.
Described valve rod is in transmission connection by screw thread and valve gap, described valve rod and the clamping of spool phase.
The beneficial effects of the utility model: owing to take such scheme, medical diaphragm valve of the present utility model, by bolted valve gap and the valve body compression fit to barrier film, compressing mutually of annular convex shoulder and annular convex rib, play the counteresteer effect to medium in the valve body, prevent that effectively medium from residuing between barrier film and the valve body, even flow into valve gap to spool and valve rod corrosion, improved sealing, unobstructed property and stability.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing at A place among Fig. 1.
Among the figure, 1-handwheel, 2-valve rod, 3-valve gap, 4-spool, 5-bolt, 6-barrier film, 61-annular convex rib, 7-valve body, 71-annular convex shoulder, 8-lug boss, the spherical concave surface of 81-, 10-inlet passage, 11-outlet passage.
Embodiment
At accompanying drawing embodiment of the present utility model is described further below:
Shown in figure, this medical diaphragm valve, comprise valve body 7, valve gap 3, handwheel 1, valve rod 2 and spool 4, be provided with the barrier film 6 that valve body 7 and spool 4 are separated between described valve body 7 and the valve gap 3, contiguous spool 4 active tunnel walls are provided with annular convex shoulder 71 on the described valve body 7, fit and be provided with annular convex rib 61 in the corresponding annular convex shoulder of described barrier film 6 downsides 71 outer rings, described annular convex rib 61 is sealed and matched with described annular convex shoulder 71.By bolted valve gap and the valve body compression fit to barrier film, compressing mutually of annular convex shoulder and annular convex rib, play the counteresteer effect to medium in the valve body, prevent that effectively medium from residuing between barrier film and the valve body, even flow into valve gap to spool and valve rod corrosion, improved sealing, unobstructed property and stability.
The cross section taper of described annular convex shoulder 71, the cross section of described annular convex rib 61 are inverted cone, and described annular convex shoulder 71 is conical surface compression fit with annular convex rib 61.By conical surface compression fit, it is more tight that the valve gap clamping bolt is pressed, and namely the sealing of valve body and barrier film is more high, effectively improves the sealing of membrane valve.
Described valve body 7 is provided with inlet passage 10 and outlet passage 11, is provided with a lug boss 8 between described inlet passage 10 and the outlet passage 11, and described lug boss 8 upper ends are provided with the spherical concave surface 81 that matches with described barrier film 6.Flexibility by identical spherical concave surface and barrier film is conflicted, and has reduced the coefficient of waste of barrier film, has improved overall working life and the sealing of valve.
Described barrier film 6 is fixedlyed connected by bolt 5 with spool 4.When handwheel control spool up moved, barrier film is motion together thereupon also, and control is accurate, the effect of long service life.
Described valve rod 2 is in transmission connection by screw thread and valve gap 3, described valve rod 2 and spool 4 phase clampings, and transmission is stable, the effect of easy accessibility.
Embodiment should not be considered as the restriction to model utility, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (5)
1. medical diaphragm valve, comprise valve body (7), valve gap (3), handwheel (1), valve rod (2) and spool (4), be provided with the barrier film (6) that valve body (7) and spool (4) are separated between described valve body (7) and the valve gap (3), it is characterized in that: described valve body (7) is gone up contiguous spool (4) active tunnel wall and is provided with annular convex shoulder (71), fit and be provided with annular convex rib (61) in the corresponding annular convex shoulder (71) of described barrier film (6) downside outer ring, described annular convex rib (61) is sealed and matched with described annular convex shoulder (71).
2. medical diaphragm valve according to claim 1, it is characterized in that: the cross section taper of described annular convex shoulder (71), the cross section of described annular convex rib (61) is inverted cone, and described annular convex shoulder (71) is conical surface compression fit with annular convex rib (61).
3. medical diaphragm valve according to claim 1, it is characterized in that: described valve body (7) is provided with inlet passage (10) and outlet passage (11), be provided with a lug boss (8) between described inlet passage (10) and the outlet passage (11), described lug boss (8) upper end is provided with the spherical concave surface (81) that matches with described barrier film (6).
4. according to each described medical diaphragm valve of claim 1-3, it is characterized in that: described barrier film (6) is fixedlyed connected by bolt (5) with spool (4).
5. according to each described medical diaphragm valve of claim 1-3, it is characterized in that: described valve rod (2) is in transmission connection by screw thread and valve gap (3), described valve rod (2) and spool (4) phase clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189320 CN203189782U (en) | 2013-04-16 | 2013-04-16 | Medical diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320189320 CN203189782U (en) | 2013-04-16 | 2013-04-16 | Medical diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203189782U true CN203189782U (en) | 2013-09-11 |
Family
ID=49106643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320189320 Expired - Fee Related CN203189782U (en) | 2013-04-16 | 2013-04-16 | Medical diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203189782U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672019A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Sterile diaphragm valve |
| WO2020085979A1 (en) * | 2018-10-25 | 2020-04-30 | Delaval Holding Ab | A distribution unit for milk samples |
-
2013
- 2013-04-16 CN CN 201320189320 patent/CN203189782U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672019A (en) * | 2013-12-02 | 2014-03-26 | 东正科技有限公司 | Sterile diaphragm valve |
| WO2020085979A1 (en) * | 2018-10-25 | 2020-04-30 | Delaval Holding Ab | A distribution unit for milk samples |
| CN112839508A (en) * | 2018-10-25 | 2021-05-25 | 利拉伐控股有限公司 | Dispensing unit for milk samples |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20160416 |