CN212839560U - Circular check valve without heavy hammer - Google Patents
Circular check valve without heavy hammer Download PDFInfo
- Publication number
- CN212839560U CN212839560U CN202021838765.XU CN202021838765U CN212839560U CN 212839560 U CN212839560 U CN 212839560U CN 202021838765 U CN202021838765 U CN 202021838765U CN 212839560 U CN212839560 U CN 212839560U
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- blade
- lifting lug
- main baffle
- lifting
- check valve
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Abstract
A circular check valve without a heavy hammer comprises an outer frame, wherein a main baffle is fixedly installed in the outer frame, a blade is movably connected in the middle of the main baffle, connecting plates are symmetrically and fixedly installed on two sides of an upper semicircle of the blade, a first lifting lug is arranged at the end part of each connecting plate, a second lifting lug is arranged on the main baffle, the first lifting lug is matched with the second lifting lug, and the first lifting lug is movably connected with the second lifting lug through a shaft sleeve; one side of the main baffle plate, which is positioned at the lower part of the two second lifting lugs, is contacted with one side of the blade, which is positioned at the lower part of the two first lifting lugs, the same side of the main baffle plate, which is positioned at the upper part of the two second lifting lugs, is fixedly provided with an auxiliary baffle plate, and one side of the blade, which is positioned at the upper part of the two first lifting lugs, is contacted with the side surface of the auxiliary baffle plate. The utility model overcomes prior art's is not enough, sets up in the centrobaric top of blade through the tie point with blade and main baffle, makes the blade also can realize freely closing under the condition of no weight to can effectual inside air current of prevention leak.
Description
Technical Field
The utility model relates to a check valve technical field, concretely relates to circular check valve of no weight.
Background
At present, the general check valve structure in China adopts a double-blade heavy hammer, but because the deformation of double blades of the valve is not uniform after the air on the back side passes through the valve, the height difference is formed between the blades, and even if the material for thickening the blades wastes time and energy to overcome the height difference, the gap between the double blades is also the defect that the gap cannot exceed one gap, a large amount of air leaks from the gap between the blades of the valve, the energy is seriously wasted, and the toxic gas in the air duct leaks to cause serious environmental hazard and personal safety, and under the occasion with high wind speed, the rubbing between the double blades can also generate very inaudible noise.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a circular check valve of no weight has overcome the not enough of prior art, reasonable in design, makes the inside amount of wind that leaks of valve body reach minimum, and the valve body outside reaches zero and reveals, and toxic gas can not leak from the valve body, reduces environmental pollution.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a circular check valve without a heavy hammer comprises an outer frame, wherein a main baffle is fixedly installed in the outer frame, a blade is movably connected in the middle of the main baffle, connecting plates are symmetrically and fixedly installed on two sides of the upper semicircle of the blade, a first lifting lug is arranged at the end part of each connecting plate, a second lifting lug is arranged on the main baffle, the first lifting lug is matched with the second lifting lug, and the first lifting lug is movably connected with the second lifting lug through a shaft sleeve; one side of the main baffle plate, which is positioned below the two second lifting lugs, is in contact with one side of the blade, which is positioned below the two first lifting lugs, the auxiliary baffle plate is fixedly installed on the same side of the main baffle plate, which is positioned above the two second lifting lugs, and one side of the blade, which is positioned above the two first lifting lugs, is in contact with the side surface of the auxiliary baffle plate.
Preferably, the outer frame is formed by full welding after circle forming of galvanized steel sheets.
Preferably, a lining plate is fixedly installed between the main baffle plate and the auxiliary baffle plate, and the thickness of the lining plate is the same as that of the blade.
The utility model provides a circular check valve of no weight. The method has the following beneficial effects: the connecting point of the blade and the main baffle is arranged above the gravity center of the blade, so that the blade can be freely closed under the condition of no heavy hammer by utilizing the Newton free landing principle, and the leakage of the internal airflow can be effectively prevented; through the rotation of cooperateing through the axle sleeve between blade and the main baffle to guarantee that the wearing and tearing that axle and second lug can not appear in the axle in the connecting plate under the long-time pivoted condition in the axle sleeve also lead to the too big blade in clearance to drop, and take the rotatory moment of torsion of axle sleeve to be less than the moment of torsion with axle direct mount on the blade far away, so moment of torsion to a great extent when the blade is rotatory has obtained the reduction, makes its blade rotate more in a flexible way.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation structure of the main baffle and the blades of the present invention;
FIG. 3 is a schematic view of the expanded structure of the main baffle and the blades of the present invention;
the reference numbers in the figures illustrate:
1. an outer frame; 2. a main baffle; 3. a blade; 4. a connecting plate; 5. a first lifting lug; 6. a second lifting lug; 7. a shaft sleeve; 8. an auxiliary baffle plate; 10. a liner plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention will be combined below to clearly and completely describe the technical solutions of the present invention.
In the first embodiment, as shown in fig. 1 to 3, a circular check valve without a heavy hammer comprises an outer frame 1, a main baffle 2 is fixedly installed in the outer frame 1, a blade 3 is movably connected in the middle of the main baffle 2, connecting plates 4 are symmetrically and fixedly installed on two sides of an upper semicircle of the blade 3, a first lifting lug 5 is arranged at an end of each connecting plate 4, a second lifting lug 6 is arranged on the main baffle 2, the first lifting lug 5 is matched with the second lifting lug 6, and the first lifting lug 5 is movably connected with the second lifting lug 6 through a shaft sleeve 7; one side of the main baffle 2 positioned below the two second lifting lugs 6 is in contact with one side of the blade 3 positioned below the two first lifting lugs 5, the auxiliary baffle 8 is fixedly installed on the same side of the main baffle 2 positioned above the two second lifting lugs 6, and one side of the blade 3 positioned above the two first lifting lugs 5 is in contact with the side surface of the auxiliary baffle 8.
In this embodiment, blade 3 can adopt the aluminum plate material, under the very little condition of adverse gas flow, because the characteristic of the low light in weight of aluminum plate material density, blade 3 also can lightly open, when positive air current comes, effect through axle sleeve 7, rotate around axle sleeve 7 with drive blade 3 and connecting plate 4, in order to open blade 3, make positive air current normally pass through, when adverse gas flow, the same reason can promote 3 antiport of blade, make blade 3 closely laminate with main baffle 2, thereby the emergence backward flow of effectual prevention inside air current.
In this embodiment, because the blade 3 and the main baffle 2 are rotated in a matching manner through the shaft sleeve 7, the blade 3 with an excessively large gap caused by abrasion of the shaft and the second lifting lug 6 can not be caused to fall off even if the shaft in the connecting plate 4 is rotated in the shaft sleeve 7 for a long time, and the rotating torque with the shaft sleeve 7 is far less than the torque for directly mounting the shaft on the blade 3, so that the torque when the blade 3 rotates is greatly reduced, and the blade 3 can rotate more flexibly.
In the embodiment, the connecting point of the blade 3 and the main baffle 2 is positioned above the gravity center of the blade 3, so that the blade can be freely closed under the condition of no heavy hammer by utilizing the Newton free landing principle, the effect of controlling the inflow of counter air flow is realized, the manufacturing is convenient, the material is greatly saved, and the cost is reduced; after the heavy hammer is removed, the heavy hammer hole can not be formed outside the valve body, so that the internal airflow can be effectively prevented from leaking; and because the blade 3 is the single-blade, its deflection can reach unifiedly, can be better attached with main baffle 2, and its main baffle 2 is overall structure, two concatenations of relative other check valve baffles, can effectually prevent the problem of leaking out between the baffle.
In this embodiment, the outer frame 1 is formed by full-length welding after being formed into a circle by using a galvanized steel sheet. And the outer frame is not provided with an axle hole, so that the internal air flow can be effectively prevented from leaking. And because the outside does not have the extension, the valve body need not consider during the installation and has or not interfered the thing in its installation operating mode, more can adapt to its building site complicated installation environment than ordinary take weight check valve.
In a third embodiment, as a further aspect of the first embodiment, a lining plate 10 is fixedly installed between the main baffle plate 2 and the auxiliary baffle plate 8, and the thickness of the lining plate 10 is the same as that of the blade 3. Therefore, the blade 3 can be firmly attached to the auxiliary baffle plate 8 while being closed, and a gap generated by a conventional baffle plate due to height difference is avoided, so that air leakage between the blade 3 and the baffle plate is prevented.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. A circular check valve of no weight, its characterized in that: the lifting device comprises an outer frame (1), wherein a main baffle (2) is fixedly installed in the outer frame (1), a blade (3) is movably connected in the middle of the main baffle (2), connecting plates (4) are symmetrically and fixedly installed on two sides of an upper semicircle of the blade (3), a first lifting lug (5) is arranged at the end part of each connecting plate (4), a second lifting lug (6) is arranged on the main baffle (2), the first lifting lug (5) is matched with the second lifting lug (6), and the first lifting lug (5) is movably connected with the second lifting lug (6) through a shaft sleeve (7);
one side of the part, below the two second lifting lugs (6), of the main baffle (2) is in contact with one side of the part, below the two first lifting lugs (5), of the blade (3), the same side, above the two second lifting lugs (6), of the main baffle (2) is fixedly provided with an auxiliary baffle (8), and one side, above the two first lifting lugs (5), of the blade (3) is in contact with the side surface of the auxiliary baffle (8).
2. The round check valve without heavy hammer of claim 1, wherein: the outer frame (1) is formed by full welding after circle forming of galvanized steel plates.
3. The round check valve without heavy hammer of claim 1, wherein: a lining plate (10) is fixedly installed between the main baffle plate (2) and the auxiliary baffle plate (8), and the thickness of the lining plate (10) is the same as that of the blades (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021838765.XU CN212839560U (en) | 2020-08-28 | 2020-08-28 | Circular check valve without heavy hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021838765.XU CN212839560U (en) | 2020-08-28 | 2020-08-28 | Circular check valve without heavy hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212839560U true CN212839560U (en) | 2021-03-30 |
Family
ID=75142003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021838765.XU Active CN212839560U (en) | 2020-08-28 | 2020-08-28 | Circular check valve without heavy hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212839560U (en) |
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2020
- 2020-08-28 CN CN202021838765.XU patent/CN212839560U/en active Active
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