CN203809751U - Diaphragm valve with adjusting and limiting functions - Google Patents
Diaphragm valve with adjusting and limiting functions Download PDFInfo
- Publication number
- CN203809751U CN203809751U CN201420370049.1U CN201420370049U CN203809751U CN 203809751 U CN203809751 U CN 203809751U CN 201420370049 U CN201420370049 U CN 201420370049U CN 203809751 U CN203809751 U CN 203809751U
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- China
- Prior art keywords
- valve rod
- handwheel
- valve
- diaphragm
- briquetting
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- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a diaphragm valve with adjusting and limiting functions. The diaphragm valve comprises a diaphragm, a pressing block, an upper cover, a valve rod and a hand wheel. The hand wheel and the pressing block are arranged at the upper end and the lower end of the valve rod respectively, the upper cover is positioned between the hand wheel and the pressing block and screwed onto the valve rod, and the diaphragm is arranged below the pressing block. The diaphragm valve further comprises an adjusting and limiting device which comprises a vertical limiting part and a fine adjusting limiting part, the vertical limiting part is integrally formed in an inner cavity of the hand wheel and connected with the fine adjusting limiting part, the valve rod penetrates through the vertical limiting part and the fine adjusting limiting part, and the adjusting and limiting device can be abutted against the upper end of the upper cover when the hand wheel drives the adjusting and limiting device to move downwards.
Description
Technical field
The utility model relates to a kind of membrane valve that regulates limit function that has.
Background technique
The structural type of membrane valve is very not identical with general valve, and it is to rely on soft rubber membrane or plastic film to control fluid motion.Membrane valve normally by valve rod band dynamic diaphragm away from or laminating valve body realize opening or closing of valve.When needs are during by valve open, membrane sheet on valve rod, departs from diaphragm and valve body, and medium can normally pass through.When needs are during by valve closing, valve rod presses down diaphragm, and diaphragm and valve body are fitted tightly, and realizes closing of valve.
Existing membrane valve mainly comprises a upper cover, and one is connected in the valve rod covering, and one is connected to the handwheel on valve rod, and valve rod lower end is connected with briquetting, and briquetting below is provided with diaphragm.The switch of membrane valve is to rely on rotation hand wheel to circle, with ovable valve stem, briquetting, diaphragm, make upper and lower straight line motion and complete the switching of valve in upper cover cavity.Stroke to valve rod in closing process is not limited, and therefore, in the time that the descending displacement of valve rod is excessive, valve rod produces larger extruding force to diaphragm.In this process, diaphragm, due to stressed excessive, can produce larger distortion.When diaphragm is during for a long time in moderate finite deformation state, diaphragm just easily damages, and then reduces the working life of membrane valve.
Model utility content
The technical problems to be solved in the utility model is that the diaphragm in order to overcome prior art existence easily excessively causes the flimsy defect of diaphragm in stressed for a long time, and a kind of membrane valve that regulates limit function that has is provided.
The utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of membrane valve with adjusting limit function, it comprises a diaphragm, one briquetting, one upper cover, one valve rod and a handwheel, described handwheel and described briquetting are located at respectively the top and bottom of described valve rod, described upper cover is between described handwheel and described briquetting and be rotatably connected in described valve rod, described diaphragm is located at described briquetting below, its feature is, described membrane valve also comprises a regulation limiting device, described regulation limiting device comprises vertical spacing parts and a fine setting limit position part, described vertical spacing parts are shaped in the inner chamber of described handwheel, described fine setting limit position part is connected with described vertical spacing parts, described valve rod is arranged in described vertical spacing parts and described fine setting limit position part, in the time that handwheel drives described regulation limiting device to move down, described regulation limiting device can connect with the upper end of described upper cover.
Preferably, described vertical spacing parts are a tubular part, the inner chamber of described tubular part is provided with multiple teeth groove, described teeth groove vertically distributes, described fine setting limit position part is a stop nut, described stop nut is provided with the detent projection of multiple vertical distributions, and described stop nut interference fit is in the inner chamber of described tubular part.Tubular part and stop nut are common parts, have advantages of that cost of production is low, easy to process.
Preferably, the upper end of described valve rod is square spigot, and described handwheel is provided with a square opening, and the square spigot of described valve rod is located in the square opening of described handwheel.Because valve rod is connected with square knuckle with handwheel, in the time of the stressed rotation of handwheel, between valve rod and handwheel, can not skid, make the operation of membrane valve more stable.
Preferably, described briquetting is provided with a U-groove bevel, and the lower end of described valve rod and described U-groove bevel are affixed.Like this, valve rod is connected more firmly with briquetting.
Preferably, described diaphragm and described briquetting are threaded connection.Like this, easy for installation between diaphragm and briquetting.
Positive progressive effect of the present utility model is: the utility model membrane valve can be protected diaphragm effectively, increases the working life of diaphragm, and then improves the working life of membrane valve.
Brief description of the drawings
Fig. 1 is the three-dimensional erection drawing of the utility model preferred embodiment.
Fig. 2 is the structural representation of the utility model preferred embodiment.
Embodiment
Lift a preferred embodiment below, and carry out by reference to the accompanying drawings the clearer the utility model that intactly illustrates.
As depicted in figs. 1 and 2, a kind of membrane valve with adjusting limit function, it comprises diaphragm 1, briquetting 2, upper cover 3, valve rod 4 and handwheel 5, handwheel 5 and briquetting 2 are fixed in respectively the top and bottom of valve rod 4, upper cover 3 is between handwheel 5 and briquetting 2 and be rotatably connected in valve rod 4, and diaphragm 1 is located at briquetting 2 belows.Membrane valve also comprises regulation limiting device, this regulation limiting device comprises tubular part 7 and stop nut 6, tubular part 7 is shaped in the inner chamber of handwheel 5, the inner chamber of tubular part 7 is provided with multiple teeth groove, teeth groove vertically distributes, the outside of stop nut 6 is provided with the detent projection of multiple vertical distributions, and stop nut 6 interference fit are in the inner chamber of tubular part 7, and valve rod 4 is arranged in tubular part 7 and stop nut 6.In the time that handwheel 5 drives regulation limiting device to move down, regulation limiting device can connect with the upper end of upper cover 3
When installation, stop nut is located to the appropriate location of the inner chamber of tubular part.In the time that membrane valve is carried out to closing operation, external force applies a rotating force on handwheel, makes the rotation of handwheel band ovable valve stem.Because upper cover is for maintaining static, therefore, rotarily drive handwheel, tubular part, stop nut and the valve rod of valve rod move down self.In the time that stop nut touches upper cover, upper cover stops handwheel to continue to move down.Now, the diaphragm of valve rod below with valve body close contact, valve closes.Because stop nut directly contacts with upper cover, even if handwheel is subject to larger external force, can not make valve rod continue to move down yet, valve rod can not continue to push diaphragm.Therefore, this device can be protected diaphragm effectively, increases the working life of diaphragm, and then improves the working life of membrane valve.
On said structure basis, the upper end of valve rod 4 can be square spigot, and handwheel 5 can be provided with square opening, and the square spigot of valve rod 4 is located in the square opening of handwheel 5.Because valve rod is connected with square knuckle with handwheel, in the time of the stressed rotation of handwheel, between valve rod and handwheel, can not skid, make the operation of membrane valve more stable.
Briquetting 2 can be provided with a U-groove bevel, and the lower end of valve rod 4 and described U-groove bevel are affixed.Like this, valve rod is connected more firmly with briquetting.
Diaphragm 1 can be threaded connection with briquetting 2, like this, and convenient installation.
Although more than described embodiment of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model and essence, can make various changes or modifications to these mode of executions, but these changes and amendment all fall into protection domain of the present utility model.
Claims (5)
1. one kind has the membrane valve that regulates limit function, it comprises a diaphragm, one briquetting, one upper cover, one valve rod and a handwheel, described handwheel and described briquetting are located at respectively the top and bottom of described valve rod, described upper cover is between described handwheel and described briquetting and be rotatably connected in described valve rod, described diaphragm is located at described briquetting below, it is characterized in that, described membrane valve also comprises a regulation limiting device, described regulation limiting device comprises vertical spacing parts and a fine setting limit position part, described vertical spacing parts are shaped in the inner chamber of described handwheel, described fine setting limit position part is connected with described vertical spacing parts, described valve rod is arranged in described vertical spacing parts and described fine setting limit position part, in the time that handwheel drives described regulation limiting device to move down, the upper end of described regulation limiting device and described upper cover connects.
2. membrane valve as claimed in claim 1, it is characterized in that, described vertical spacing parts are a tubular part, the inner chamber of described tubular part is provided with multiple teeth groove, described teeth groove vertically distributes, described fine setting limit position part is a stop nut, and described stop nut is provided with the detent projection of multiple vertical distributions, and described stop nut interference fit is in the inner chamber of described tubular part.
3. membrane valve as claimed in claim 1, is characterized in that, the upper end of described valve rod is square spigot, and described handwheel is provided with a square opening, and the square spigot of described valve rod is located in the square opening of described handwheel.
4. membrane valve as claimed in claim 1, is characterized in that, described briquetting is provided with a U-groove bevel, and the lower end of described valve rod and described U-groove bevel are affixed.
5. membrane valve as claimed in claim 1, is characterized in that, described diaphragm and described briquetting are threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370049.1U CN203809751U (en) | 2014-07-04 | 2014-07-04 | Diaphragm valve with adjusting and limiting functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370049.1U CN203809751U (en) | 2014-07-04 | 2014-07-04 | Diaphragm valve with adjusting and limiting functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809751U true CN203809751U (en) | 2014-09-03 |
Family
ID=51448501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420370049.1U Active CN203809751U (en) | 2014-07-04 | 2014-07-04 | Diaphragm valve with adjusting and limiting functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809751U (en) |
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2014
- 2014-07-04 CN CN201420370049.1U patent/CN203809751U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201100 Shanghai city Minhang District Huaning road 2888 Lane 88 Building No. 28 Patentee after: Gaimi valve (China) Co. Ltd. Address before: 201100 Shanghai city Minhang District Huaning road 2888 Lane 88 Building No. 28 Patentee before: Gaimi valve (Shanghai) Co., Ltd. |