CN212690937U - Multi-flap check valve - Google Patents
Multi-flap check valve Download PDFInfo
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- CN212690937U CN212690937U CN202021540413.6U CN202021540413U CN212690937U CN 212690937 U CN212690937 U CN 212690937U CN 202021540413 U CN202021540413 U CN 202021540413U CN 212690937 U CN212690937 U CN 212690937U
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Abstract
The utility model discloses a multi-petal check valve, which comprises a valve body, be equipped with first valve rod and second valve rod on the valve body, fixedly connected with valve plate on first valve rod and the second valve rod, be connected with first valve clack on the first valve rod, be connected with on the second valve rod and connect the second valve clack, the cross section of first valve clack is greater than the second valve clack, one side that valve plate and first valve clack, second valve clack contacted is provided with elastic layer and elastic strip. The utility model discloses beneficial effect: 1. the valve clack is provided with the multi-clack, so that the valve clack is small in size and light in weight, a flow channel is smooth, the fluid resistance is small, the valve clack stroke is short, the closing impact force is small, the valve clack is closed quickly, and the water hammer pressure is small; 2. the elastic layer is arranged on one side of the valve plate, so that linear vibration can be reduced, the stability of the first valve clack and the second valve clack is ensured, and the first valve clack and the second valve clack can close the check valve before fluid flows reversely; 3. the cross section of the first valve clack is larger than that of the second valve clack, and the pressure in the pipeline can be balanced.
Description
Technical Field
The utility model belongs to the technical field of the check valve, especially, relate to a multi-disc check valve.
Background
The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. The check valve is a valve which can automatically open and close the valve clack depending on the flowing of the medium, and the main function of the check valve is to prevent the medium from flowing backwards. With the increase of the caliber of the check valve, if a single-flap check valve is adopted, the weight and the stroke of the valve flap become large, so that the closing time is slow, and a considerable impact pressure is generated when the medium flows backwards, so that the moving part and the valve seat are easily damaged. When the check valve is used for municipal water supply pipeline, more elbow and reducing pipe lead to the fluid flow state in the pipeline more disorderly and often the whirlpool in the first half of pipeline to have the air on municipal water supply pipeline, make the valve clack of check valve along with the rivers constantly swing like this, aggravate wearing and tearing, shortened the life of valve.
Open (notice) No. CN204512552U a swing multi-clack check valve, including a first valve body, a connecting bolt, a valve plate and a second valve body, the first valve body is connected with the second valve body through the connecting bolt and a sealing member is arranged at the joint, the valve plate is fixedly connected between the first valve body and the second valve body, one of the faces of the valve plate is provided with a plurality of valve clack assemblies, the number of the valve clack assemblies is an odd number greater than or equal to 3, the plurality of valve clack assemblies are at least arranged into 2 rows, the swing multi-clack check valve further comprises a bypass loop positioned outside the first valve body and the second valve body, a bypass loop interface is arranged at the same side of the first valve body and the second valve body, and two ends of the bypass loop are respectively communicated with the first valve body or the second valve body in the inner cavity. The valve adopts the design of main and auxiliary valve bodies, so that the maintenance and the replacement of parts are more convenient, the valve clacks are not opened and closed simultaneously, and the opening stroke of the valve clacks is short, thereby effectively reducing or eliminating the water hammer, reducing the impact force of a medium on the valve and the valve seat and prolonging the service life of the valve. However, linear vibration is generated in the valve clack recovery process, so that the valve clack is influenced to be closed in time, and meanwhile, the valve clack is the same in size and cannot well balance the pressure in the pipeline.
Therefore, the utility model provides a multi-petal check valve.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art existence, the utility model aims to provide an effectual check valve is flowed to non return.
In order to realize the above-mentioned purpose, the utility model provides a multi-petal check valve, which comprises a valve body, be equipped with first valve rod in the middle of the valve body, the both sides of first valve rod are provided with the second valve rod, and first valve rod and second valve rod pass through bolt and valve body fixed connection, fixedly connected with valve plate on first valve rod and the second valve rod, first valve rod and second valve rod homonymy are provided with the valve clack connecting seat, swing joint has the valve clack board on the valve clack connecting seat, connect first valve clack through the valve clack board on the first valve rod, connect the second valve clack through the valve clack board on the second valve rod, the cross section of first valve clack is greater than the second valve clack, the valve plate is provided with the elastic layer in the one side that is connected with first valve clack and second valve clack, one side that first valve clack and second.
Preferably, among the technical scheme disclosed, be equipped with the valve body window on the valve body, the condition of first valve clack and second valve clack can be observed to the valve body window, can conveniently take out from the valve body window when first valve clack and second valve clack have the damage, and it is more convenient to overhaul the maintenance.
Preferably, among the technical scheme disclosed in the utility model, the outside cladding of first valve rod and second valve rod has the rubber, can increase the adhesive force between valve clack connecting seat and first valve rod and the second valve rod, prevents that first valve clack and second valve clack from arousing the valve clack connecting seat in the motion process and rock.
Preferably, the utility model discloses an among the technical scheme, the inside of first valve rod and second valve rod all is provided with the ejector pin, and first valve rod and second valve rod bear great impact force in the course of the work, and inside sets up the intensity that the ejector pin can strengthen first valve rod and second valve rod.
Preferably, in the technical scheme disclosed in the utility model, first valve clack and second valve clack are made by nickel aluminium bronze material for first valve clack and second valve clack have high strength, heat-resisting characteristic, increase the life of first valve clack and second valve clack.
Preferably, in the technical scheme disclosed in the utility model, every first valve clack and second valve clack correspond at least and connect two valve clack connecting seats, are convenient for improve the stability of first valve clack and second valve clack.
The utility model discloses beneficial effect: 1. the multi-flap first valve flap and the multi-flap second valve flap are arranged, so that the first valve flap and the second valve flap are small in size and light in weight, smooth in flow channel and small in fluid resistance, the first valve flap and the second valve flap are short in stroke and small in closing impact force, the first valve flap and the second valve flap are closed quickly, and the water hammer pressure is small; 2. the elastic layer is arranged on one side of the valve plate, so that linear vibration can be reduced, the stability of the first valve clack and the second valve clack is ensured, and the first valve clack and the second valve clack can close the check valve before fluid flows reversely; 3. the cross section of the first valve clack is larger than that of the second valve clack, and the pressure in the pipeline can be balanced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the multi-flap check valve of the present invention;
FIG. 2 is an internal cross-sectional view of the multi-flap check valve of the present invention;
fig. 3 is a schematic view of the first and second valve stems.
Wherein, the corresponding relation between the reference signs and the component names is as follows: 1 valve body, 2 first valve rods, 3 second valve rods, 4 valve plates, 5 valve clack connecting seats, 6 valve clack plates, 7 first valve clack, 8 second valve clack, 9 elastic layer, 10 elastic strip, 11 valve body windows, 12 rubber and 13 ejector pins.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention based on the description.
It should be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof, and that "first," "second," and "first" should not be construed as limiting the scope of protection.
The technical proposal of the utility model is that as shown in figure 1 and figure 2, the multi-flap check valve comprises a valve body 1, a first valve rod 2 is arranged in the middle of the valve body 1, second valve rods 3 are arranged on two sides of the first valve rod 2, the first valve rod 2 and the second valve rods 3 are fixedly connected with the valve body 1 through bolts, a valve plate 4 is fixedly connected on the first valve rod 2 and the second valve rod 3, a valve clack connecting seat 5 is arranged on the same side of the first valve rod 2 and the second valve rod 3, the valve clack connecting seat 5 is movably connected with a valve clack plate 6, the first valve rod 2 is connected with a first valve clack 7 through the valve clack plate 6, the second valve rod 3 is connected with a second valve flap 8 through a valve flap plate 6, the cross section of the first valve flap 7 is larger than that of the second valve flap 8, the valve plate 4 is provided with an elastic layer 9 on the side where the first valve flap 7 and the second valve flap 8 are connected, the elastic strips 10 are arranged on one sides of the first valve flap 7 and the second valve flap 8, which contact the elastic layer 9.
In the embodiment, the valve plate 4 is provided with the first valve clack 7 and the second valve clack 8, so that the first valve clack 7 and the second valve clack 8 are short in structure, small in size and light in weight, the resistance of fluid can be reduced, a flow channel is smooth, meanwhile, the rotating radiuses of the first valve clack 7 and the second valve clack 8 are reduced, the first valve clack 7 and the second valve clack 8 can be closed quickly, the water hammer pressure is small, and the impact force of a pipe valve is small; the elastic layer 9 and the elastic strip 10 are arranged on one side of the valve plate 4, which is in contact with the first valve clack 7 and the second valve clack 8, so that the linear vibration among the first valve clack 7, the second valve clack 8 and the valve plate 4 can be reduced, the first valve clack 7 and the second valve clack 8 are closed in time, and the backflow of fluid is prevented; in the valve of heavy-calibre, the pressure of inside fluid at the inside different positions of valve is different, and the cross section of first valve clack 7 is greater than second valve clack 8 for the middle part fluid that pressure is big can be followed first valve clack 7 and passed through, and the pressure in the balanced valve of being convenient for avoids causing the valve internal pressure to change.
Preferably, in the technical scheme disclosed in the utility model, be equipped with valve body window 11 on the valve body 1. The valve body window 11 can observe the conditions of the first valve clack 7 and the second valve clack 8, when the first valve clack 7 and the second valve clack 8 are damaged, the valve body window 11 can be conveniently taken out, and the valve body window is more convenient to overhaul and maintain.
Preferably, in the technical scheme disclosed in the utility model, the outside cladding of first valve rod 2 and second valve rod 3 has rubber 12, can increase the adhesive force between valve clack connecting seat 5 and first valve rod 2 and the second valve rod 3, prevents that first valve clack 7 and second valve clack 8 from arousing valve clack connecting seat 5 in the motion process and rock.
Preferably, in the technical scheme disclosed in the utility model, the inside of first valve rod 2 and second valve rod 3 all is provided with ejector pin 13, and first valve rod 2 and second valve rod 3 bear great impact force in the course of the work, and inside setting up ejector pin 13 can strengthen the intensity of first valve rod 2 and second valve rod 3.
Preferably, in the technical scheme disclosed in the utility model, first valve clack 7 and second valve clack 8 are made by nickel-aluminum bronze material for first valve clack 7 and second valve clack 8 have high strength, heat-resisting characteristic, increase first valve clack 7 and second valve clack 8's life.
Preferably, in the technical scheme disclosed in the utility model, every first valve clack 7 and second valve clack 8 correspond at least and connect two valve clack connecting seats 5, are convenient for improve first valve clack 7 and second valve clack 8's stability.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (6)
1. The multi-flap check valve comprises a valve body (1) and is characterized in that a first valve rod (2) is arranged in the middle of the valve body (1), second valve rods (3) are arranged on two sides of the first valve rod (2), the first valve rod (2) and the second valve rod (3) are fixedly connected with the valve body (1) through bolts, a valve plate (4) is fixedly connected onto the first valve rod (2) and the second valve rod (3), a valve flap connecting seat (5) is arranged on the same side of the first valve rod (2) and the second valve rod (3), a valve flap plate (6) is movably connected onto the valve flap connecting seat (5), a first valve flap (7) is connected onto the first valve rod (2) through the valve flap plate (6), a second valve flap (8) is connected onto the second valve rod (3) through the valve flap plate (6), and the cross section of the first valve flap (7) is larger than the second valve flap (8), valve plate (4) are provided with elastic layer (9) in the one side that is connected with first valve clack (7) and second valve clack (8), one side that first valve clack (7) and second valve clack (8) contact elastic layer (9) is provided with elasticity strip (10).
2. A multi-clack check valve according to claim 1, characterized in that the valve body (1) is provided with a valve body window (11).
3. A multi-petal check valve according to claim 1, wherein the outside of the first and second valve stems (2, 3) is coated with a rubber (12).
4. A multi-petal check valve according to claim 1 or 3, wherein the first valve stem (2) and the second valve stem (3) are each internally provided with a carrier rod (13).
5. A multi-flap check valve according to claim 1 wherein the first and second flaps (7, 8) are made of a nickel aluminium bronze material.
6. A multi-flap check valve according to claim 1 or 5, characterized in that each first flap (7) and second flap (8) connects at least two flap connection seats (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021540413.6U CN212690937U (en) | 2020-07-30 | 2020-07-30 | Multi-flap check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021540413.6U CN212690937U (en) | 2020-07-30 | 2020-07-30 | Multi-flap check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212690937U true CN212690937U (en) | 2021-03-12 |
Family
ID=74900128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021540413.6U Active CN212690937U (en) | 2020-07-30 | 2020-07-30 | Multi-flap check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212690937U (en) |
-
2020
- 2020-07-30 CN CN202021540413.6U patent/CN212690937U/en active Active
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