Anti-interference check valve

Abstract

The utility model relates to the technical field of valves, in particular to an anti-interference check valve which comprises a valve body, a fluid channel arranged in the valve body, a valve seat arranged in the fluid channel, and a valve plate arranged in the valve body in a front-back sliding mode through a sliding device and used for being matched with the valve seat. A stabilizing device used for enabling the valve plate to reset quickly and preventing the valve plate from being disturbed by turbulent flow is further arranged between the valve plate and the valve seat.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially relates to anti -interference check valve. BACKGROUND

[0002] Valve is very wide in fluid control aspect application, according to different conditions and demand, check valve generally controls the valve plate opening and closing by the flow and pressure of fluid, this also leads to, check valve is influenced by fluid bigger, anti -interference ability is weak, if the flow or pressure of fluid is relatively unstable, will directly influence the working condition of check valve, the delivery of fluid can be interrupted. SUMMARY

[0003] Therefore, aiming at the above problem, the utility model provides anti -interference check valve.

[0004] To realize above-mentioned purpose, the technical scheme of the utility model provides anti -interference check valve, including valve body, the fluid passage being opened in the valve body, the valve seat being arranged in the fluid passage, the valve plate being arranged in the valve body for being matched with the valve seat by the slippage device can slip forward and backward, still be provided with the stabilizing device for making the valve plate fast reset and preventing being disturbed between the valve plate and the valve seat.

[0005] Further improvement is that: the stabilizing device includes: a plurality of guide holes being opened on the valve plate, a plurality of guide columns being arranged on the valve seat, the quick reset device is arranged between the guide column and the valve plate, the anti - turbulence device is arranged between the guide hole and the guide column.

[0006] Further improvement is that: the anti - turbulence device includes: the first sealing layer being arranged on the valve plate and the guide hole, the positioning recess being opened on the first sealing layer and corresponding to the first sealing layer, the second sealing layer being arranged on the guide column, the positioning convex is arranged on the second sealing layer, and the axial length of the positioning convex is less than the axial length of the positioning recess.

[0007] Further improvement is that: the quick reset device includes: the threaded hole being opened on the guide column, the screw being locked in the threaded hole, the first spring being sleeved on the guide column and abutting on the screw on one end and abutting on the valve plate on the other end.

[0008] Further improvement is that: the slippage device includes: the mounting groove being opened on the valve body and corresponding to the valve seat, the mounting frame being locked in the mounting groove, the sliding sleeve being arranged on the mounting frame, the valve rod being slippably arranged on the sliding sleeve, and the valve rod is connected with the valve plate on one end.

[0009] Further improvement is that: the guide device is further arranged between the valve rod and the sliding sleeve for cooperating with the stabilizing device.

[0010] Further improvement is that the guiding device comprises a guide groove opened on the valve rod and a guiding strip arranged on the sliding sleeve.

[0011] Further improvement is that a second spring is further arranged on the valve rod, one end of the second spring is abutted against the valve plate and the other end is abutted against the sliding sleeve, and the second spring is a conical spring.

[0012] Further improvement is that a third sealing layer is arranged in the valve body for prolonging service life and enhancing sealing performance.

[0013] Further improvement is that connecting flanges are further arranged on both sides of the valve body for facilitating connection with water conveying pipes.

[0014] The valve has the advantages and beneficial effects that:

[0015] The valve has the advantages and beneficial effects that: BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 Partially cutaway schematic view of the anti-interference check valve of the utility model;

[0017] Fig. 2 Partially cutaway schematic view of the anti-interference check valve of the utility model;

[0018] Fig. 3 Partially cutaway schematic view of the anti-interference check valve of the utility model;

[0019] In the drawings: 101, valve body; 102, fluid passage; 103, valve seat; 104, valve plate; 105, guiding hole; 106, guiding column; 107, first sealing layer; 108, positioning recess; 109, second sealing layer; 110, positioning protrusion; 111, round corner; 112, screw; 113, first spring; 114, mounting groove; 115, mounting frame; 116, sliding sleeve; 117, valve rod; 118, guide groove; 119, guiding strip; 120, second spring; 121, third sealing layer; 122, connecting flange. DETAILED DESCRIPTION

[0020] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.

[0021] As Figs. 1-3 shown, anti-interference check valve, including valve body 101, the fluid passage 102 set up in valve body 101, the valve seat 103 set up in the fluid passage 102, the valve plate 104 set up in valve body 101 for cooperating with the valve seat 103 by sliding device can be forward and backward sliding, the valve plate 104 and the valve seat 103 between still be provided with the stabilizing device for making the valve plate 104 fast reset and preventing being disturbed by the flow.

[0022] In order to enhance the stability of the movement of valve plate 104, the stabilizing device includes: a plurality of guide holes 105 set up on valve plate 104, a plurality of guide columns 106 set up on valve seat 103, the guide column 106 and valve plate 104 between setting up fast reset device, the guide hole 105 and guide column 106 between setting up anti-turbulence device.

[0023] In order to prevent the valve plate 104 from repeatedly opening and closing when the fluid pressure is unstable, the anti-turbulence device includes: a first sealing layer 107 set up on the valve plate 104 and the guide hole 105, a positioning groove 108 set up on the first sealing layer 107 and corresponding to the first sealing layer 107, a second sealing layer 109 set up on the guide column 106, the second sealing layer 109 is provided with positioning convex 110, the axial length of the positioning convex 110 is less than the axial length of the positioning groove 108, the positioning convex 110 and the second sealing layer 109 are of the same material and have a certain elasticity, and the positioning convex 110 is further provided with a fillet 111.

[0024] In order to make the valve plate 104 can fast reset, complete sealing, the fast reset device includes: a threaded hole (not shown in the figure) set up on the guide column 106, a screw 112 locked in the threaded hole, a first spring 113 sleeved on the guide column 106, one end of the first spring 113 abutting against the screw 112 and the other end abutting against the valve plate 104.

[0025] In order to facilitate the installation of valve plate 104, the sliding device includes: an installation groove 114 set up on the valve body 101 corresponding to the valve seat 103, an installation frame 115 locked in the installation groove 114, a sliding sleeve 116 set up on the installation frame 115, a valve stem 117 slidably set on the sliding sleeve 116, and the valve stem 117 is connected with the valve plate 104 at one end.

[0026] In order to further enhance the stability of the valve plate 104 movement, the valve stem 117 and sliding sleeve 116 are also provided with a guide device for cooperating with the stabilizing device, the guide device comprises: the guide groove 118 is opened on the valve stem 117, the guide strip 119 is arranged on the sliding sleeve 116.

[0027] In order to make the valve plate 104 can be more stable and fast reset, the valve stem 117 is also provided with a second spring 120, one end of the second spring 120 is abutted to the valve plate 104 and the other end is abutted to the sliding sleeve 116, the second spring 120 is a conical spring.

[0028] In order to enhance the service life of the valve, the third sealing layer 121 is arranged in the valve body 101 for prolonging the service life and enhancing the sealing performance.

[0029] The first sealing layer 107, the second sealing layer 109 and the third sealing layer 121 are all rubber layers.

[0030] In order to facilitate the installation of the valve, the valve body 101 is also provided with a connecting flange 122 on both sides for facilitating the connection with the water pipeline.

[0031] Working principle: when using, the valve is installed on the water pipeline through the connecting flange 122, when the fluid pressure is large, the fluid will impact the valve plate 104, so that the valve plate 104 is displaced under the elastic force of the first spring 113 and the second spring 120, thereby releasing the seal and completing the water outlet, and when the fluid pressure becomes small or backflow, the valve plate 104 is quickly reset to complete the sealing under the action of the first spring 113 and the second spring 120, preventing the fluid from flowing backward, and the positioning groove 108 and the positioning protrusion 110 are arranged between the guide hole 105 and the guide column 106, when the fluid pressure is at the critical point of the opening and closing of the valve plate 104, the cooperation of the two can make the valve plate 104 only have a small range of displacement, preventing it from having a large distance displacement, reducing the disturbance of the flow to the opening and closing of the valve, and improving the use safety.

[0032] The basic principle and main features of the utility model and its advantages are shown and described above, and the skilled in the art should understand that the utility model is not limited by the above examples, the above examples and the description in the description are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, the changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-interference check valve, comprising a valve body, a fluid passage formed within the valve body, a valve seat disposed within the fluid passage, and a valve plate disposed within the valve body via a sliding device for cooperating with the valve seat, characterized in that: The valve plate and the valve seat are further provided with a stabilizing device for quickly resetting the valve plate and preventing the valve plate from being disturbed by turbulent flow.

2. The interference-proof check valve according to claim 1, characterized in that: The stabilizing device comprises a plurality of guide holes formed on the valve plate, a plurality of guide columns arranged on the valve seat, a quick resetting device arranged between the guide columns and the valve plate, and a turbulence-preventing device arranged between the guide holes and the guide columns.

3. The interference-proof check valve according to claim 2, characterized in that: The turbulence-preventing device comprises a first sealing layer arranged on the valve plate and the guide holes, a positioning groove formed on the first sealing layer and corresponding to the first sealing layer, and a second sealing layer arranged on the guide columns, wherein the second sealing layer is provided with a positioning protrusion, and the axial length of the positioning protrusion is less than the axial length of the positioning groove.

4. The interference-proof check valve of claim 2, wherein: The quick resetting device comprises a threaded hole formed on the guide column, a screw locked in the threaded hole, and a first spring sleeved on the guide column and abutting against the screw at one end and against the valve plate at the other end.

5. The interference-proof check valve of claim 2, wherein: The sliding device comprises a mounting groove formed on the valve body and corresponding to the valve seat, a mounting frame locked in the mounting groove, a sliding sleeve arranged on the mounting frame, and a valve rod slidably arranged on the sliding sleeve, wherein one end of the valve rod is connected with the valve plate.

6. The interference-proof check valve of claim 5, wherein: The valve rod and the sliding sleeve are further provided with a guide device for cooperating with the stabilizing device.

7. The interference-proof check valve of claim 6, wherein: The guide device comprises a guide groove formed on the valve rod and a guide strip arranged on the sliding sleeve.

8. The interference-proof check valve of claim 5, wherein: The valve rod is further sleeved with a second spring, one end of the second spring abutting against the valve plate and the other end abutting against the sliding sleeve, and the second spring is a conical spring.

9. The interference-proof check valve of claim 1, wherein: The valve body is provided with a third sealing layer for prolonging the service life and enhancing the sealing performance.

10. The interference-proof check valve of claim 1, wherein: The valve body is further provided with connecting flanges on both sides for facilitating the connection with water conveying pipelines.

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