CN219588196U - Double-plate check valve with drainage function - Google Patents
Double-plate check valve with drainage function Download PDFInfo
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- CN219588196U CN219588196U CN202321117696.7U CN202321117696U CN219588196U CN 219588196 U CN219588196 U CN 219588196U CN 202321117696 U CN202321117696 U CN 202321117696U CN 219588196 U CN219588196 U CN 219588196U
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Abstract
The utility model discloses a double-plate check valve with a drainage function, which relates to the technical field of valves and comprises a valve body, wherein a water inlet cavity, a water outlet cavity and a check structure are arranged in the valve body, the check structure comprises a valve shaft, a first valve plate and a second valve plate are hinged on the valve shaft, a spring is sleeved on the valve shaft, an upper torsion arm and a lower torsion arm of the spring respectively abut against the first valve plate and the second valve plate, and the double-plate check valve also comprises a drainage mechanism, wherein the drainage mechanism is provided with a first position communicated with the water inlet cavity and the water outlet cavity when being opened and a second position separated from the water inlet cavity and the water outlet cavity when being closed. When an emergency is met, the drainage mechanism can be operated to drain the medium at the water outlet end, so that the medium at the water outlet end can drain the medium through the drainage mechanism, the safe use of the pipeline and equipment can be ensured, and the safety and the service life of the valve are improved.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a double-plate check valve with a leakage function.
Background
The check valve is a valve with a circular valve plate as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure. The existing check valve can lead to the increase of the pressure of the water outlet end of the check valve when the volume of the medium expands or the medium is unstable due to the fact that gas is generated and the like, and the medium at the water outlet end cannot return to the water inlet end due to the effect of the check structure, so that the pressure of the water outlet end is overlarge, the connection part of the check valve and the water outlet end connecting pipeline is easily damaged, and the safety use of equipment is not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a double-plate check valve with a leakage function.
The technical scheme provided by the utility model is as follows:
the utility model provides a double-deck check valve with bleeder function, includes the valve body, be equipped with intake chamber, play water cavity, non return structure in the valve body, non return structure includes the valve shaft, articulated on the valve shaft have first valve plate and second valve plate, cup jointed the spring on the valve shaft, the upper and lower torsion arm of spring supports respectively and leans on first valve plate and second valve plate, still includes bleeder mechanism, bleeder mechanism has the first position of intercommunication intake chamber and play water cavity when opening and cuts off the second position of leading to intake chamber and play water cavity when closing.
The drainage mechanism comprises a drainage cavity, a drainage rod and a drainage plug, wherein the drainage plug is movably arranged in the drainage cavity, one end of the drainage rod is connected with the drainage plug, the drainage cavity is provided with a first channel communicated with the water inlet cavity and the water outlet cavity, and the drainage plug is provided with a first position for blocking the first channel and a second position for opening the first channel.
The drainage rod extends from the inside of the valve body to the outside of the valve body, and a handle is arranged at the end part of the drainage rod extending out of the valve body.
The first valve plate is semicircular, the second valve plate is semicircular, and the first valve plate and the second valve plate are symmetrically arranged along the central axis of the valve body.
The thickness of the first valve plate close to the valve shaft side is larger than that of the first valve plate close to the valve body side, and the thickness of the second valve plate close to the valve shaft side is larger than that of the second valve plate close to the valve body side.
The first valve plate is hinged with the valve shaft through a first shaft lug and a second shaft lug, the second valve plate is hinged with the valve shaft through a third shaft lug and a fourth shaft lug, and a first space ring is arranged between the first shaft lug and the third shaft lug, and a second space ring is arranged between the second shaft lug and the fourth shaft lug.
And the valve body is provided with a hanging ring.
The valve body is provided with a screw plug for fixing the valve shaft, and a gasket is arranged between the screw plug and the valve body.
The utility model has the beneficial effects that: according to the utility model, the leakage mechanism is arranged on the check valve, so that when an emergency occurs, the leakage mechanism can be operated to perform leakage, so that the medium at the water outlet end can perform leakage through the leakage mechanism, the safe use of the pipeline and equipment can be ensured, and the safety and the service life of the valve are improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
fig. 2 is a schematic cross-sectional structure of an embodiment of the present utility model.
Description of the embodiments
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
As shown in fig. 1-2, this embodiment is a double-plate check valve with a drainage function, including a valve body 1, a water inlet cavity 8, a water outlet cavity 7 and a check structure are provided in the valve body, the check structure includes a valve shaft 2, a first valve plate 3 and a second valve plate 4 are hinged on the valve shaft 2, a spring 5 is sleeved on the valve shaft 2, upper and lower torsion arms 6 of the spring 5 respectively support against the first valve plate 3 and the second valve plate 4, and further includes a drainage mechanism 10, the drainage mechanism 10 includes a drainage cavity 34, a drainage rod 31 and a drainage plug 33, the drainage plug 33 is movably provided in the drainage cavity 34, one end of the drainage rod 31 is connected with the drainage plug 33, the drainage cavity 34 is provided with a first channel 35 which is communicated with the water inlet cavity 8 and the water outlet cavity 7, the drainage rod 31 moves to drive the drainage plug 33 to move in the drainage cavity 34 at this time, the first channel is located at a first position in a normal state, the drainage plug 33 is located at a first position of the first channel, and the drainage plug 33 can only be pushed by a medium from the water inlet end to the water outlet end through the valve plate, and the drainage plug 33 can not be opened by the water outlet end of the valve, and the drainage mechanism can not be opened due to the fact that the drainage plug 33 can be pushed by the medium through the water inlet end and the water outlet end.
Further, the drain rod 31 extends from the inside of the valve body 1 to the outside of the valve body 1, and a handle 32 is arranged at the end of the drain rod extending out of the valve body 1, and the handle 32 can be conveniently operated to pull the drain rod 31.
Further, the first valve plate 3 is semicircular, the second valve plate 4 is semicircular, the first valve plate 3 and the second valve plate 4 are symmetrically arranged along the central axis of the valve body 1, the thickness of the first valve plate 3 close to the valve shaft 2 side is larger than that of the first valve plate 3 close to the valve body 1 side, the thickness of the second valve plate 4 close to the valve shaft 2 side is larger than that of the second valve plate close to the valve body side, and the valve plate with the structure is opened or reset rapidly and stably.
Further, the first valve plate 3 is hinged to the valve shaft 2 through the first shaft lug 21 and the second shaft lug 22, the second valve plate 4 is hinged to the valve shaft 2 through the third shaft lug 23 and the fourth shaft lug 24, a first spacer ring 25 is arranged between the first shaft lug 21 and the third shaft lug 23, a second spacer ring 24 is arranged between the second shaft lug 22 and the fourth shaft lug 24, the shaft lugs are arranged in a staggered mode, and the spacer rings are arranged between the shaft lugs to effectively prevent the valve plate from collision when being opened, so that the service life is prolonged.
Further, rings 11 are arranged above the valve body 1, the rings can provide support during installation, installation efficiency is improved, a plug screw 12 is further arranged on the valve body, the plug screw 12 is used for fixing a valve shaft and preventing the valve shaft from flying out, and a gasket 13 is arranged between the plug screw 12 and the valve body 1.
The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.
Claims (8)
1. The utility model provides a double-plate check valve with bleeder function, includes the valve body, be equipped with intake chamber, play water cavity, non return structure in the valve body, the non return structure includes the valve shaft, articulated on the valve shaft have first valve plate and second valve plate, the spring has been cup jointed on the valve shaft, the upper and lower torsion arm of spring supports respectively and leans on first valve plate and second valve plate, its characterized in that: the water draining device further comprises a water draining mechanism, wherein the water draining mechanism is provided with a first position for communicating the water inlet cavity with the water outlet cavity when being opened and a second position for blocking the water inlet cavity from the water outlet cavity when being closed.
2. A two-plate check valve with bleed functionality as defined in claim 1, wherein: the drainage mechanism comprises a drainage cavity, a drainage rod and a drainage plug, wherein the drainage plug is movably arranged in the drainage cavity, one end of the drainage rod is connected with the drainage plug, the drainage cavity is provided with a first channel communicated with the water inlet cavity and the water outlet cavity, and the drainage plug is provided with a first position for blocking the first channel and a second position for opening the first channel.
3. A two-plate check valve with bleed functionality as defined in claim 2, wherein: the drainage rod extends from the inside of the valve body to the outside of the valve body, and a handle is arranged at the end part of the drainage rod extending out of the valve body.
4. A two-plate check valve with bleed functionality as defined in claim 1, wherein: the first valve plate is semicircular, the second valve plate is semicircular, and the first valve plate and the second valve plate are symmetrically arranged along the central axis of the valve body.
5. A two-plate check valve with bleed functionality as defined in claim 1, wherein: the thickness of the first valve plate close to the valve shaft side is larger than that of the first valve plate close to the valve body side, and the thickness of the second valve plate close to the valve shaft side is larger than that of the second valve plate close to the valve body side.
6. A two-plate check valve with bleed functionality as defined in claim 1, wherein: the first valve plate is hinged with the valve shaft through a first shaft lug and a second shaft lug, the second valve plate is hinged with the valve shaft through a third shaft lug and a fourth shaft lug, and a first space ring is arranged between the first shaft lug and the third shaft lug, and a second space ring is arranged between the second shaft lug and the fourth shaft lug.
7. A two-plate check valve with bleed functionality as defined in claim 1, wherein: and the valve body is provided with a hanging ring.
8. A two-plate check valve with bleed functionality as defined in claim 1, wherein: the valve body is provided with a screw plug for fixing the valve shaft, and a gasket is arranged between the screw plug and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321117696.7U CN219588196U (en) | 2023-05-11 | 2023-05-11 | Double-plate check valve with drainage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321117696.7U CN219588196U (en) | 2023-05-11 | 2023-05-11 | Double-plate check valve with drainage function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219588196U true CN219588196U (en) | 2023-08-25 |
Family
ID=87687162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321117696.7U Active CN219588196U (en) | 2023-05-11 | 2023-05-11 | Double-plate check valve with drainage function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219588196U (en) |
-
2023
- 2023-05-11 CN CN202321117696.7U patent/CN219588196U/en active Active
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