CN220416333U - Backflow-preventing valve pipe fitting - Google Patents
Backflow-preventing valve pipe fitting Download PDFInfo
- Publication number
- CN220416333U CN220416333U CN202322092837.0U CN202322092837U CN220416333U CN 220416333 U CN220416333 U CN 220416333U CN 202322092837 U CN202322092837 U CN 202322092837U CN 220416333 U CN220416333 U CN 220416333U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- filter screen
- elastic structure
- backflow
- 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.)
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Links
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 239000012535 impurity Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009288 screen filtration Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to a backflow-preventing valve pipe fitting. Including the check valve, the check valve is equipped with inlet tube and outlet pipe including the valve body, and the valve body is equipped with inlet tube and outlet pipe, and the inlet tube sets up in valve body one side low end, and the outlet pipe sets up in valve body opposite side high end, is equipped with elastic structure in the valve body, and the elastic structure below is equipped with the filter screen, and the filter screen below is hollow, and the bottom is equipped with valve gap one for clear away the interior impurity of valve. When the valve is used, fluid enters the valve body through the water inlet pipe, when the pressure is greater than that of the elastic structure, the elastic structure moves upwards, the fluid flows into and out of the water pipe, when the pressure is less than that of the elastic structure, the elastic structure is restored, the fluid is prevented from flowing back, meanwhile, the fluid flows through the filter screen, impurities filtered by the filter screen naturally deposit to the bottom of the valve body, the first valve cover at the bottom of the valve body is opened, the impurities can be moved out of the valve body 11, impurity removal is achieved, the operation is simple, and the practicability is high.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a backflow-preventing valve pipe fitting.
Background
The check valve is a valve with a circular valve clack and can stop the backflow of medium by the action of self weight and medium pressure, and belongs to automatic valves, namely check valves, one-way valves, backflow valves or isolation valves. The traditional check valve is when using, contains some impurity easy siltation around the valve plate in the fluid through the valve body for there is certain clearance between valve plate and the disk seat when fluid flows back, thereby causes the check valve closure to reduce, and the non return effect is relatively poor, and simple filter screen that installs additional, although can filter impurity, but after long-time use, the filter screen is easily stopped up, and artifical periodic dismantlement clearance is comparatively loaded down with trivial details time and energy, thereby has reduced the practicality of check valve.
For valve tubing for backflow prevention, there are many prior art techniques, such as:
chinese patent publication No. CN218152514U discloses a check valve, which comprises a valve body, a mounting cylinder, valve plate and valve gap, valve body inner chamber fixed mounting has the disk seat, and disk seat bottom surface fixed mounting has a filter screen section of thick bamboo, the valve plate inlay card is in the disk seat, and the even fixed mounting in disk plate bottom surface has four connecting rods, and connecting rod bottom fixed mounting has the collar, evenly install four second sliding sleeves in the disk seat, and the connecting rod has been cup jointed in the second sliding sleeve, the cleaning brush is installed to the collar inboard, and cleaning brush and filter screen section of thick bamboo lateral wall looks butt, valve body top opening fixed mounting has the mounting flange, and the mounting cylinder has been placed in the mounting flange, the valve gap is installed on the mounting flange through a plurality of fixing bolt. Through being provided with valve plate, collar and cleaning brush, realized can clear up the impurity that blocks up on the filter screen section of thick bamboo when using automatically, need not artifical periodic disassembly clearance filter screen section of thick bamboo, improved the practicality of a check valve.
Therefore, most of the backflow-preventing valve pipe fittings comprise a valve body and a filter screen, impurities are filtered through the filter screen, so that the practicability of the check valve is improved, but the filtered impurities still exist in the pipe fittings, and along with the service life extension, when the impurities completely block the filter screen, the valve loses due functions, and a new valve has to be replaced.
In view of this, we propose a backflow-preventing valve member that can handle filtered impurities.
Disclosure of Invention
The present utility model is directed to a valve tube for preventing backflow, which solves the above-mentioned problems.
In order to achieve the above purpose, the utility model provides a backflow-preventing valve pipe fitting, which comprises a check valve, wherein the check valve comprises a valve body, the valve body is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is arranged at the low end of one side of the valve body, the water outlet pipe is arranged at the high end of the other side of the valve body, an elastic structure is arranged in the valve body, a filter screen is arranged below the elastic structure, the lower part of the filter screen is hollow, and the bottom of the filter screen is provided with a first valve cover for removing impurities in the valve.
As a further improvement of the technical scheme, the elastic structure comprises a spring and a valve core, wherein one end of the spring is connected with the valve core, and the other end of the spring is connected with the valve cover.
As a further improvement of the technical scheme, positioning frames are arranged on two sides of the inner cavity of the valve body and used for fixing the position of the valve core, and meanwhile, the valve core horizontally fits the valve body to prevent fluid from flowing back to the water inlet pipe.
As a further improvement of the technical scheme, a plurality of screw holes are symmetrically formed in two sides of the bottom end of the positioning frame and used for fixing the filter screen through bolts, and the filter screen is prevented from falling to the bottom end of the valve body under the impact of fluid.
As a further improvement of the technical scheme, the valve cover I and the elastic structure are fixed on the valve body through bolts, and the surface of the filter screen is coated with an FBE epoxy powder anti-corrosion coating.
Compared with the prior art, the utility model has the beneficial effects that:
when the valve pipe fitting of this anti-reflux uses, fluid gets into the valve body through the inlet tube, and when pressure was greater than elastic structure, elastic structure upwards moves, and fluid flows into and out the water pipe, and when pressure was less than elastic structure, elastic structure recovered, prevented that fluid from flowing backward, simultaneously the impurity after the filter screen filtration was deposited to the valve body bottom naturally to the filter screen, opens valve gap one of valve body bottom, can move the impurity outside the valve body 11, realizes impurity clearance, easy operation, and the practicality is strong.
Drawings
FIG. 1 is a schematic overall structure of embodiment 1;
FIG. 2 is a cross-sectional view of the check valve of example 1;
fig. 3 is a sectional view of the check valve of example 1.
The meaning of each reference sign in the figure is:
1. a check valve; 11. a valve body; 111. a positioning frame; 12. a water inlet pipe; 13. a water outlet pipe; 14. an elastic structure; 141. a spring; 142. a valve core; 15. a filter screen; 16. and a valve cover I.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-3, the embodiment provides a backflow-preventing valve pipe fitting, which comprises a check valve 1, wherein the check valve 1 comprises a valve body 11, the valve body 11 is provided with a water inlet pipe 12 and a water outlet pipe 13 considering that the valve body 11 is connected with a pipeline, the water inlet pipe 12 is arranged at the lower end of one side of the valve body 11, the water outlet pipe 13 is arranged at the higher end of the other side of the valve body 11, the pipeline connection is convenient, an elastic structure 14 is arranged in the valve body 11, a filter screen 15 is arranged below the elastic structure 14, the impurities filtered by the filter screen 15 can naturally precipitate, the lower part of the filter screen 15 is hollow, the impurities can be conveniently collected, and a valve cover 16 is arranged at the bottom of the valve for removing the impurities in the valve.
Working principle: fluid enters the valve body 11 through the water inlet pipe 12, when the pressure is greater than the elastic structure 14, the elastic structure 14 moves upwards, the fluid flows into and out of the water pipe 13, when the pressure is less than the elastic structure 14, the elastic structure 14 is restored, the fluid is prevented from flowing back, meanwhile, the fluid flows through the filter screen 15, impurities filtered by the filter screen 15 naturally deposit to the bottom of the valve body 11, and the impurities can be moved to the outside of the valve body 11 by opening the first valve cover 16 at the bottom of the valve body 11, so that the impurity removal is realized.
In order to realize the effect that the elastic structure 14 moves upwards under the force and does not naturally sag under the force, the elastic structure 14 comprises a spring 141 and a valve core 142, one end of the spring 141 is connected with the valve core 142, the other end is connected with a valve cover, and the rebound effect of the elastic structure 14 is realized by utilizing the weight of the valve core 142 and the elasticity of the spring 141.
Considering the condition of fluid reflux, therefore, the two sides of the inner cavity of the valve body 11 are provided with positioning frames 111, and the positioning frames 111 are used for fixing the position of the valve core 142, and simultaneously, the valve core 142 is horizontally attached to the valve body 11 to prevent the fluid from flowing back to the water inlet pipe 12, so that the check effect of the check valve 1 is ensured.
In order to fix the filter screen 15, a plurality of screw holes are symmetrically arranged on two sides of the bottom end of the positioning frame 111 and are used for fixing the filter screen 15 by bolts, so that the filter screen 15 is prevented from falling to the bottom end of the valve body 11 under the impact of fluid, and the surface of the filter screen 15 is coated with an FBE (film-coating) epoxy powder anti-corrosion coating which has the advantages of simple coating operation, no pollution, good impact resistance and bending resistance of the coating, high temperature resistance and the like.
Considering that the elastic structure 14 is naturally damaged and impurities are removed outside the valve body 11, the valve cover I16 and the elastic structure 14 are fixed on the valve body 11 through bolts, so that the valve cover I16 and the elastic structure 14 can bear fluid pressure and are convenient to detach and replace.
When the backflow preventing valve pipe fitting in this embodiment is specifically used, firstly, fluid enters the valve body 11 through the water inlet pipe 12, when the fluid pressure is greater than the pressure of the valve core 142 and the spring 141 in the elastic structure 14, the valve core 142 moves upwards, the fluid flows into and out of the water pipe 13, when the fluid pressure is less than the pressure of the valve core 142 and the spring 141 in the elastic structure 14, the elastic structure 14 is restored, the valve core 142 stays on the positioning frame 111 to prevent the fluid from flowing back, meanwhile, the fluid flows through the filter screen 15, impurities filtered by the filter screen 15 naturally settle to the bottom of the valve body 11, and the first valve cover 16 at the bottom of the valve body 11 is opened, so that the impurities can be moved out of the valve body 11 to realize impurity removal.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A valve tube for preventing backflow, comprising a non-return valve (1), characterized in that: the check valve (1) comprises a valve body (11), the valve body (11) is equipped with inlet tube (12) and outlet pipe (13), and inlet tube (12) set up in valve body (11) one side low end, and outlet pipe (13) set up in valve body (11) opposite side high end, be equipped with elastic structure (14) in valve body (11), elastic structure (14) below is equipped with filter screen (15), filter screen (15) below is hollow, and the bottom is equipped with valve gap one (16) for clear away the interior impurity of valve.
2. The backflow prevention valve tube member as defined in claim 1, wherein: the elastic structure (14) comprises a spring (141) and a valve core (142), one end of the spring (141) is connected with the valve core (142), and the other end is connected with the valve cover.
3. The backflow prevention valve tube member as defined in claim 1, wherein: positioning frames (111) are arranged on two sides of the inner cavity of the valve body (11), the positioning frames (111) are used for fixing the position of the valve core (142), and meanwhile the valve core (142) is horizontally attached to the valve body (11) to prevent fluid from flowing back to the water inlet pipe (12).
4. A backflow preventing valve member as defined in claim 3, wherein: the two sides of the bottom end of the positioning frame (111) are symmetrically provided with a plurality of screw holes for fixing the filter screen (15) by bolts, so that the filter screen (15) is prevented from falling to the bottom end of the valve body (11) under the impact of fluid.
5. The backflow prevention valve tube member as defined in claim 1, wherein: the valve cover I (16) and the elastic structure (14) are fixed on the valve body (11) through bolts, and an FBE (film-like epoxy powder) anti-corrosion coating is smeared on the surface of the filter screen (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322092837.0U CN220416333U (en) | 2023-08-03 | 2023-08-03 | Backflow-preventing valve pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322092837.0U CN220416333U (en) | 2023-08-03 | 2023-08-03 | Backflow-preventing valve pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220416333U true CN220416333U (en) | 2024-01-30 |
Family
ID=89646169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322092837.0U Active CN220416333U (en) | 2023-08-03 | 2023-08-03 | Backflow-preventing valve pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220416333U (en) |
-
2023
- 2023-08-03 CN CN202322092837.0U patent/CN220416333U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |