CN207500549U - A kind of non-maintaining axial flow type check valve - Google Patents
A kind of non-maintaining axial flow type check valve Download PDFInfo
- Publication number
- CN207500549U CN207500549U CN201721589858.1U CN201721589858U CN207500549U CN 207500549 U CN207500549 U CN 207500549U CN 201721589858 U CN201721589858 U CN 201721589858U CN 207500549 U CN207500549 U CN 207500549U
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- valve
- flap
- guide shell
- axial flow
- flow type
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Abstract
The utility model is related to a kind of check-valves, especially a kind of axial flow type check valve.A kind of non-maintaining axial flow type check valve in the utility model, including valve body, guide shell and flap, flap is equipped with guide rod behind, guide shell and valve body form the valve chamber of circulation medium, valve interior wall is fixed on the right side of guide shell, on the left of valve body be input end, right side is the port of export, valve interior wall includes the entrance, diffuser and the contraction section that are from left to right equipped with successively, entrance and diffuser engaging portion are equipped with valve seat, flap is connected by spring with axle sleeve, what guide rod can horizontally slip is mounted on axle sleeve, and sealing structure is formed with valve seat when flap is located at left side.When outlet pressures and acting force of the spring and more than input end pressure, flap then remains turned-off, and the opening and closing of flap are always among dynamic equilibrium, it is ensured that valve operates steadily, impulse-free noise, and reduces water hammer.
Description
Technical field
The utility model is related to a kind of check-valves, especially a kind of axial flow type check valve.
Background technology
Axial flow type check valve has the characteristics of circulation efficiency is high, and the pressure loss is small, noiseless, sealed reliable, in engineering
Using more and more extensive, axial flow type check valve common at present has circular disk type check-valves and disc type check-valves, and flap uses
Casting and forming, valve shaft and flap are bolted, and have axial flow type check valve should be by although this design form can be valve
Functional characteristics, it is but long-term in use, seal failure is susceptible to, if needing repairing in actual condition, it is necessary to by valve
It is removed from official road, time-consuming and laborious, there are many drawback.
Utility model content
In order to solve the shortcomings of the prior art, the utility model provide it is a kind of operate steadily, impulse-free noise
Check-valves.
A kind of non-maintaining axial flow type check valve in the utility model, including valve body, guide shell and flap, flap is set behind
Have a guide rod, guide shell and valve body form the valve chamber of circulation medium, and valve interior wall is fixed on the right side of guide shell, be on the left of valve body into
Mouth end, right side are the port of export, and valve interior wall includes the entrance, diffuser and the contraction section that are from left to right equipped with successively, entrance
With diffuser engaging portion equipped with valve seat, entrance is cylinder, and diffuser is beloid tubaeform, after contraction section is preceding width
Narrow is tubaeform；Guide shell is left wide right narrow v-shaped structure, is equipped with the axle sleeve coordinated with guide rod in the middle part of guide shell, flap leads to
It crosses spring with axle sleeve to be connected, what guide rod can horizontally slip is mounted on axle sleeve, and flap is formed with valve seat when being located at left side and sealed
Structure.When import end pressure is more than outlet pressures and spring force summation, flap is opened, and the opening degree of flap is by pressure
Difference determines that, when outlet pressures and acting force of the spring and more than input end pressure, flap then remains turned-off, and flap is opened
It opens and closes always among dynamic equilibrium, it is ensured that valve operates steadily, impulse-free noise, and reduces water hammer.
Preferably, guide shell is fixed on by locating ring on valve body.Preferably, locating ring is bolted on valve
On body.It is at low cost, it is easy to disassemble.
Preferably, axle sleeve is connected through a screw thread with guide shell.Maintenance is maintained easily, it is at low cost.
Preferably, guide shell right end is provided with through-hole.For balancing the pressure of valve chamber and guide shell inner cavity chamber, in order to
The open and close of flap.
The beneficial effects of the utility model：When import end pressure is more than outlet pressures and spring force summation, flap
It opens, the opening degree of flap determines by pressure differential, when outlet pressures and acting force of the spring and more than input end pressure
When, flap then remains turned-off, and the opening and closing of flap are among dynamic equilibrium always, it is ensured that and valve operates steadily,
Impulse-free noise, and reduce water hammer.
Description of the drawings
Fig. 1 is a kind of non-maintaining axial flow type check valve structure diagram.
It is marked in figure：1st, valve body, 2, guide shell, 3, flap, 4, spring, 5, axle sleeve, 6, locating ring, 7, bolt.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, but this should not be interpreted as the utility model
The range of above-mentioned theme is only limitted to above-described embodiment.
As shown in Figure 1, a kind of non-maintaining axial flow type check valve, including valve body 1, guide shell 2 and flap 3,3 behind of flap is set
There is guide rod, guide shell 2 and valve body 1 form the valve chamber of circulation medium, and 2 right side of guide shell is fixed on 1 inner wall of valve body, and valve body 1 is left
Side is input end, right side is the port of export, and 1 inner wall of valve body includes the entrance, diffuser and the contraction section that are from left to right equipped with successively,
Entrance and diffuser engaging portion are equipped with valve seat, and entrance is cylinder, and diffuser is beloid tubaeform, and contraction section is
Front wide and rear narrow is tubaeform；Guide shell 2 is left wide right narrow v-shaped structure, and 2 middle part of guide shell is equipped with the axle sleeve coordinated with guide rod
5, flap 3 is connected by spring 4 with axle sleeve 5, and what guide rod can horizontally slip is mounted on axle sleeve 5, when flap 3 is located at left side and
Valve seat forms sealing structure.When import end pressure is more than 4 elastic force summation of outlet pressures and spring, flap 3 is opened, flap 3
Opening degree determine that, when 4 active force of outlet pressures and spring and more than input end pressure, flap is then by pressure differential
It remains turned-off, the opening and closing of flap 3 are among dynamic equilibrium always, it is ensured that valve operates steadily, no impulse noise
Sound, and reduce water hammer.
Preferably, guide shell 2 is fixed on by locating ring 6 on valve body 1.Preferably, locating ring is fixed by bolt 7
On valve body 1.It is at low cost, it is easy to disassemble.
Preferably, axle sleeve 5 is connected through a screw thread with guide shell 2.Maintenance is maintained easily, it is at low cost.
Preferably, 2 right end of guide shell is provided with through-hole.For balancing the pressure of valve chamber and guide shell inner cavity chamber, so as to
In the open and close of flap 3.
Claims (4)
1. a kind of non-maintaining axial flow type check valve, including valve body, guide shell and flap, flap is equipped with guide rod, guide shell behind
The valve chamber of circulation medium is formed with valve body, valve interior wall is fixed on the right side of guide shell, on the left of valve body be input end, right side is outlet
End, valve interior wall include the entrance, diffuser and the contraction section that are from left to right equipped with successively, and entrance and diffuser engaging portion are set
There is a valve seat, entrance is cylinder, and diffuser is beloid tubaeform, and contraction section is front wide and rear narrow tubaeform；It is special
Sign is that guide shell is left wide right narrow v-shaped structure, is equipped with the axle sleeve coordinated with guide rod in the middle part of guide shell, flap passes through bullet
Spring is connected with axle sleeve, and what guide rod can horizontally slip is mounted on axle sleeve, and sealing structure is formed with valve seat when flap is located at left side.
2. a kind of non-maintaining axial flow type check valve according to claim 1, which is characterized in that guide shell is consolidated by locating ring
It is scheduled on valve body.
3. a kind of non-maintaining axial flow type check valve according to claim 2, which is characterized in that locating ring is bolted
On valve body.
4. a kind of non-maintaining axial flow type check valve according to claim 1, which is characterized in that guide shell right end is provided with logical
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589858.1U CN207500549U (en) | 2017-11-24 | 2017-11-24 | A kind of non-maintaining axial flow type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589858.1U CN207500549U (en) | 2017-11-24 | 2017-11-24 | A kind of non-maintaining axial flow type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207500549U true CN207500549U (en) | 2018-06-15 |
Family
ID=62506512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721589858.1U Active CN207500549U (en) | 2017-11-24 | 2017-11-24 | A kind of non-maintaining axial flow type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207500549U (en) |
-
2017
- 2017-11-24 CN CN201721589858.1U patent/CN207500549U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |