CN219866427U - Square round interface single-plate check valve - Google Patents
Square round interface single-plate check valve Download PDFInfo
- Publication number
- CN219866427U CN219866427U CN202320673521.8U CN202320673521U CN219866427U CN 219866427 U CN219866427 U CN 219866427U CN 202320673521 U CN202320673521 U CN 202320673521U CN 219866427 U CN219866427 U CN 219866427U
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- Prior art keywords
- valve
- plate
- bearing
- valve body
- cover
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- 238000007789 sealing Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Abstract
The utility model discloses a square round interface single-plate check valve, which comprises a valve body, wherein a valve rod is rotationally connected with two sides of the valve body, and one end of the valve rod penetrates out of the valve body to be fixedly connected with a heavy hammer; the part of the valve rod positioned in the valve body is fixedly connected with the valve plate through a rib plate; the valve plate is positioned on one side, which is close to the center of the valve body, relative to the center line of the valve rod; the valve plate is arranged at the air inlet of the valve body; the buffer block is fixed inside the valve body and is positioned on the path where the valve plate is opened. The utility model solves the problem that the check valve balance weight is difficult to adjust.
Description
Technical Field
The utility model belongs to the technical field of valves, and relates to a square round interface single-plate check valve.
Background
The check valve is a safety valve, is used in ventilation systems such as fans, central air conditioners, air treatment units and the like, the ventilation system is used for providing flow for the system, the problem of influencing flow resistance in the system is the main problem of the whole system design, when the fans are closed, the valuable equipment is easily damaged when pressure in the pipelines is released or other flow flowing backwards through the air duct system causes the fan impeller to reverse, and the check valve is used for opening the pressure difference as small as possible on the premise of ensuring that the system is prevented from flowing backwards, so that the valve is a problem to be solved urgently.
The working principle of the check valve is as follows: when the system is in operation, the valve plate is opened by the forward pressure formed in front of the valve, and when the system stops operation, the valve is automatically closed under the self-gravity action of the heavy hammer and the valve plate due to the loss of the forward pressure, so that the system is prevented from flowing backwards. Because of the flow loss of the components of the overall system, the check valve is required to have as small an opening pressure difference as possible in order to ensure that the subsequent system can provide sufficient flow. In the existing structure, for the valve with the downward weight hammer position, the gravity center position of the valve plate is far left relative to the shaft center in the closing state of the valve plate, the valve plate is in the closing assisting state, the weight hammer is also in the closing assisting state, the valve plate cannot be opened due to the fact that the weight of the weight hammer is large under the condition of small opening pressure difference, the weight of the weight hammer is small, and the phenomenon that the valve plate cannot be closed after being opened happens occurs. Rendering the check valve weight difficult to adjust.
Disclosure of Invention
In order to achieve the purpose, the utility model provides the square round interface single-plate check valve, which solves the problem that the balance weight of the existing check valve is difficult to adjust.
In order to solve the technical problems, the technical scheme adopted by the utility model is that the square round interface single-plate check valve comprises a valve body, wherein a valve rod is rotationally connected with two sides of the valve body, and one end of the valve rod penetrates out of the valve body to be fixedly connected with a heavy hammer; the part of the valve rod positioned in the valve body is fixedly connected with the valve plate through a rib plate; the valve plate is positioned on one side, which is close to the center of the valve body, relative to the center line of the valve rod; the valve plate is arranged at the air inlet of the valve body; the buffer block is fixed inside the valve body and is positioned on the path where the valve plate is opened.
Further, a first bearing base and a second bearing base which are symmetrically arranged are arranged on two sides of the valve body, the first bearing is arranged in a bearing end cover, and the bearing end cover is fixed on the first bearing base; the second bearing is arranged in the bearing through cover, and the bearing through cover is fixed on the second bearing base; the two ends of the valve rod are respectively fixed in the first bearing and the second bearing.
Further, the novel bearing further comprises a first O-shaped ring, wherein the first O-shaped ring is positioned between the bearing through cover and the valve rod, and two second O-shaped rings are respectively positioned between the bearing end cover and the first bearing base and between the bearing through cover and the second bearing base.
Further, the valve cover is fixed below the valve body through a first fastener, and a valve cover sealing gasket is arranged between the valve cover and the valve body.
Further, the valve rod is fixed with the heavy hammer through the heavy hammer rod.
Further, the heavy hammer is arranged in the protective cover, and the protective cover is fixed on the side face of the valve body.
Further, the rib plates are fixed with the valve plate through welding.
Further, the valve rod is fixedly connected with the rib plate through a taper pin.
Further, a sealing ring is arranged at the joint of the valve plate and the valve body.
The beneficial effects of the utility model are as follows:
1. the valve plate moves rightwards, so that the gravity center is deviated rightwards relative to the longitudinal center line of the valve rod, the valve plate is always in an auxiliary opening state, the balance weight is more favorably regulated, the structure is more reasonable, and the valve is effectively opened and closed.
2. The valve plate is connected with the rib plate in a welding mode, so that the process that the valve plate is perforated and then connected with the rib plate through a fastener in the original structure is omitted, and sealing is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a square-round interface single-plate check valve according to an embodiment of the present utility model.
Fig. 2 is a C-C cross-sectional view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is an enlarged view at I in fig. 1.
Fig. 5 is an enlarged view at II in fig. 1.
In the figure, the valve body 1, the taper pin 2, the valve rod 4, the sealing ring 5, the valve plate 6, the valve cover 7, the valve cover sealing gasket 8, the first fastening piece 9, the buffer block 10, the protection cover 11, the heavy hammer rod 12, the heavy hammer 13, the bearing end cover 14, the first bearing 15, the second fastening piece 16, the first bearing base 17, the second bearing base 18, the bearing penetrating cover 19, the second bearing 20, the first O-shaped ring 21, the second O-shaped ring 22 and the rib plate.
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.
As shown in fig. 1-3, the utility model provides a square round interface single-plate check valve, which comprises a valve body 1, wherein a valve rod 3 is rotationally connected with two sides of the valve body 1, and one end of the valve rod 3 penetrates out of the valve body 1 to be fixedly connected with a heavy hammer 12; the part of the valve rod 3 positioned in the valve body 1 is fixedly connected with the valve plate 5 through a rib plate 22; the valve plate 5 is positioned on the side close to the center of the valve body 1 with respect to the center line of the valve stem 3 (i.e., on the right side of the center line of the valve stem 3 in fig. 2); the valve plate 5 is arranged at the air inlet of the valve body 1; a buffer block 9 is fixed inside the valve body 1, located on the path of opening of the valve plate 5, for preventing the valve plate 5 from being excessively opened. In the embodiment, the position of the valve plate 5 moves right, so that the gravity center is deviated to the right relative to the longitudinal center line of the valve rod 3, the valve plate 5 is always in an auxiliary opening state, the balance weight is more favorably regulated, the structure is more reasonable, and the valve is effectively opened and closed.
In some embodiments, the valve body 1 is provided with a first bearing base 16 and a second bearing base 17 which are symmetrically arranged, the first bearing 14 is arranged in the bearing end cover 13, and the bearing end cover 13 is fixed on the first bearing base 16 through a second fastener 15; the second bearing 19 is installed in the bearing through cover 18, and the bearing through cover 18 is fixed on the second bearing base 17 through the second fastening piece 15; the bearing penetrating cover 18 is positioned on one side of the valve body 1, which is close to the heavy hammer 12, and is used for the valve rod 3 to penetrate out; the valve stem 3 is fixed at both ends thereof in a first bearing 14 and a second bearing 19, respectively. By adopting the connection mode, the connection is stable and reliable.
In some embodiments, the valve rod 3 and the weight 12 are fixed by the weight rod 11.
In some embodiments, the rib plate 22 and the valve plate 5 are fixed by welding, so that the process of connecting the valve plate with a fastener after punching in the original structure is omitted, and the sealing performance is better.
In some embodiments, the valve rod 3 is fixedly connected with the rib plate 22 through the taper pin 2, and the connection is stable and reliable.
In some embodiments, the valve cover 6 is further included, the valve cover 6 is fixed below the valve body 1 through the first fastener 8, the valve cover 6 is convenient for the assembly of parts inside the valve body 1 after being opened, and a valve cover sealing gasket 7 is arranged between the valve cover 6 and the valve body 1, so that tightness is ensured.
In some embodiments, the weight 12 and the weight rod 11 are disposed in the protecting cover 10, and the protecting cover 10 is fixed to the side of the valve body 1. The protective cover 10 plays a protective role in the valve operation process and prevents the heavy hammer from hurting people.
In some embodiments, as shown in fig. 4 to 5, the first O-ring 20 is located between the bearing cover 18 and the valve rod 3, and the two second O-rings 21 are located between the bearing end cover 13 and the first bearing base 16 and between the bearing cover 18 and the second bearing base 17, respectively, so that the tightness of the connection is greatly increased.
In some embodiments, a sealing ring 4 is arranged at the joint of the valve plate 5 and the valve body 1 to improve the sealing performance of the valve.
The working process of the utility model is as follows:
when a fan of the ventilation system is started, the pressure of the ventilation system is increased, a positive pressure impact valve plate 5 is formed in front of the square round interface single-plate check valve, and when the sum of the pressure and the moment of the valve plate 5 is larger than the moment of the heavy hammer 12, the valve plate 5 drives the valve rod 3 and the heavy hammer 12 to rotate, so that the valve plate 5 is opened, and the system works normally; when the fan is closed, the weight 12 automatically closes the valve under the action of gravity due to the loss of forward pressure, so that the harm of the backward airflow to the fan is prevented.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.
Claims (9)
1. The square round interface single-plate check valve is characterized by comprising a valve body (1), wherein a valve rod (3) is rotationally connected with two sides of the valve body (1), and one end of the valve rod (3) penetrates out of the valve body (1) to be fixedly connected with a heavy hammer (12); the part of the valve rod (3) positioned in the valve body (1) is fixedly connected with the valve plate (5) through a rib plate (22); the valve plate (5) is positioned at one side which is close to the center of the valve body (1) relative to the center line of the valve rod (3); the valve plate (5) is arranged at the air inlet of the valve body (1); the buffer block (9) is fixed inside the valve body (1) and is positioned on the opening path of the valve plate (5).
2. A square-round interface single-plate check valve according to claim 1, characterized in that the valve body (1) is provided with a first bearing base (16) and a second bearing base (17) which are symmetrically arranged, the first bearing (14) is arranged in a bearing end cover (13), and the bearing end cover (13) is fixed on the first bearing base (16); the second bearing (19) is arranged in the bearing through cover (18), and the bearing through cover (18) is fixed on the second bearing base (17); both ends of the valve rod (3) are respectively fixed in a first bearing (14) and a second bearing (19).
3. A square-round interface single-plate check valve according to claim 2, further comprising a first O-ring (20), the first O-ring (20) being located between the bearing cap (18) and the valve stem (3), and two second O-rings (21) being located between the bearing end cap (13) and the first bearing base (16) and between the bearing cap (18) and the second bearing base (17), respectively.
4. The square-round-interface single-plate check valve according to claim 1, further comprising a valve cover (6), wherein the valve cover (6) is fixed below the valve body (1) through a first fastener (8), and a valve cover sealing gasket (7) is arranged between the valve cover (6) and the valve body (1).
5. A square-round interface single-plate check valve according to claim 1, characterized in that the valve rod (3) and the weight (12) are fixed by the weight rod (11).
6. The square-round interface single-plate check valve according to claim 1, wherein the weight (12) is arranged in a protective cover (10), and the protective cover (10) is fixed on the side surface of the valve body (1).
7. A square-round interface single-plate check valve according to claim 1, characterized in that the rib plate (22) and the valve plate (5) are fixed by welding.
8. A square-round-interface single-plate check valve according to claim 1, characterized in that the valve rod (3) is fixedly connected with the rib plate (22) through a taper pin (2).
9. A square-round interface single-plate check valve according to claim 1, characterized in that a sealing ring (4) is arranged at the joint of the valve plate (5) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320673521.8U CN219866427U (en) | 2023-03-30 | 2023-03-30 | Square round interface single-plate check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320673521.8U CN219866427U (en) | 2023-03-30 | 2023-03-30 | Square round interface single-plate check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219866427U true CN219866427U (en) | 2023-10-20 |
Family
ID=88369360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320673521.8U Active CN219866427U (en) | 2023-03-30 | 2023-03-30 | Square round interface single-plate check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219866427U (en) |
-
2023
- 2023-03-30 CN CN202320673521.8U patent/CN219866427U/en active Active
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| GR01 | Patent grant |