CN210510400U - Buoyancy type check valve - Google Patents
Buoyancy type check valve Download PDFInfo
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- CN210510400U CN210510400U CN201921330191.2U CN201921330191U CN210510400U CN 210510400 U CN210510400 U CN 210510400U CN 201921330191 U CN201921330191 U CN 201921330191U CN 210510400 U CN210510400 U CN 210510400U
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- valve
- damping cylinder
- check valve
- buoyancy
- valve body
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Abstract
The utility model discloses a buoyancy formula check valve in the check valve field. The buoyancy type check valve comprises a valve body, a valve core and a damping cylinder, wherein an outlet is formed in the upper end of the valve body, a valve plate is connected to the lower end of the valve body, an inlet is formed in the center of the valve plate and communicated with the outlet of the pump, a guide seat is arranged in the valve body, a guide hole is formed in the middle of the guide seat, the damping cylinder is arranged on the guide seat, a piston is arranged in the damping cylinder, the piston divides the interior of the damping cylinder into an upper cavity and a lower cavity, a flow passage is formed in the side wall of the damping cylinder and respectively communicated with the upper portion of the upper cavity and the lower portion of the lower cavity, the valve core comprises a hollow plugging piece and a hollow. The buoyancy type check valve has low requirement on the water outlet pressure of the pump, can achieve the effects of reducing loss and saving energy, and effectively prolongs the service life of the pump.
Description
Technical Field
The utility model relates to a check valve technical field, in particular to buoyancy formula check valve.
Background
At present, a self-sucking pump check valve for a swirl well of a steel mill adopts a swing type or a lifting type, the swing type check valve is a hinge structure, a valve plate is provided with a hinge mechanism for ensuring that the valve plate is sealed with a valve seat each time, and the hinge mechanism is worn after long-time operation due to frequent starting of the self-sucking pump, so that the check valve is damaged; the lift check valve completely depends on the pressure at the outlet of the pump to lift the valve core when the self-priming pump operates, so that the outlet pressure of the self-priming pump is reduced, and meanwhile, because the self-priming pump is frequently started, the valve core has frequent impact force on the outlet of the pump, and the pump is damaged by long-time operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a buoyancy formula check valve that the loss is low, little to the pump impact force.
In order to realize the above utility model purpose, the utility model relates to a following technical scheme that buoyancy formula check valve adopted:
the utility model provides a buoyancy formula check valve, includes valve body, case and damping cylinder, the valve body upper end is provided with the export, the valve body lower extreme is connected with the valve plate, the valve plate center is provided with the import, import and pump export intercommunication, be provided with the guide holder in the valve body, be provided with the guiding hole in the middle of the guide holder, the damping cylinder sets up on the guide holder, be provided with the piston in the damping cylinder, the piston divides into epicoele and cavity of resorption in with the damping cylinder, the damping cylinder lateral wall is provided with the runner, the runner communicates respectively the upper portion of epicoele with the lower part of cavity of resorption, the case includes hollow shutoff piece and hollow guide arm, the center in the shutoff piece is connected to the guide arm lower extreme, the guide arm upper end is passed the guiding hole. The hinge-free structure has low requirement on the water outlet pressure of the pump; when the water pump works, the valve core can automatically float under the action of buoyancy, so that the supporting force of water flow on the valve core is reduced, and the loss is reduced; and meanwhile, the self-adjusting damping cylinder limits the displacement speed of the valve core, so that the impact force of the valve core on the outlet of the pump is reduced.
The bottom of the plugging piece is provided with a circular arc-shaped bulge, and the periphery of the upper end of the inlet is provided with a chamfer matched with the bulge. The bottom of the valve core is in a streamline design, so that the resistance loss of water flow during working is reduced, and the effects of low loss and energy conservation are achieved.
The guide rod is connected with the piston through threads.
The valve core is made of magnesium-aluminum alloy. The valve core body made of the magnesium-aluminum alloy with the characteristics of low density and high strength is light and high in strength.
The valve core is integrally formed.
Compared with the prior art, the beneficial effects of the utility model reside in that: the requirement on the pressure of the pump outlet water is low; the upstream surface of the valve core is in a streamline design, so that the resistance to water flow is reduced, and meanwhile, the hollow valve core can automatically float under the action of buoyancy, so that the supporting force of the water flow to the valve core is reduced, and the effects of reducing loss and saving energy are achieved; and meanwhile, the self-adjusting damping cylinder limits the displacement speed of the valve core, so that the impact force of the valve core on the outlet of the pump is reduced, and the service life of the pump is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention;
the valve comprises a valve body 1, an outlet 11, a guide seat 12, a guide hole 13, a valve core 2, a sealing piece 21, a guide rod 22, a protrusion 23, a damping cylinder 3, a piston 31, a flow passage 32, a valve plate 4, an inlet 41 and a chamfer 42.
Detailed Description
The present invention will be further explained with reference to the following embodiments, which are to be understood as illustrative only and not as limiting the scope of the invention, and modifications of the various equivalent forms of the present invention by those skilled in the art after reading the present invention fall within the scope of the appended claims.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "vertical" and "outer peripheral surface" are used to indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the product of the present invention is usually placed when in use, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the term "vertical" or the like does not imply that the components are required to be absolutely horizontal or overhanging, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described herein can be combined and combined by those skilled in the art without conflicting aspects.
As shown in fig. 1, a buoyancy type check valve comprises a cylindrical valve body 1, a valve core 2 and a damping cylinder 3, wherein an outlet 11 is arranged at the upper end of the valve body 1, a valve plate 4 is connected to the lower end of the valve body 1 through a bolt, an inlet 41 is arranged at the center of the valve plate 4, the inlet 41 is communicated with the outlet 11 of the pump, a guide seat 12 is fixedly arranged in the valve body 1, a guide hole 13 is arranged in the middle of the guide seat 12, the damping cylinder 3 is fixedly arranged on the guide seat 12, a piston 31 is arranged in the damping cylinder 3, the damping cylinder 3 is divided into an upper cavity and a lower cavity by the piston 31, a flow passage 32 is arranged on the side wall of the damping cylinder 3, the upper part of the upper cavity is communicated with the lower part of the lower cavity by the flow passage 32, the valve core 2 comprises a hollow plugging piece 21 and a hollow guide rod 22 which are integrally formed, the lower end of the guide rod 22 is connected with, the periphery of the upper end of the inlet 41 is provided with a chamfer 42 which cooperates with the protrusion 23.
The utility model discloses a concrete working process and principle:
the water flow discharged from the pump outlet enters the valve body through the inlet, flows to the valve body outlet from the periphery after the valve core is jacked open, and flows out from the valve body outlet;
the water flow reversely flowing back from the outlet of the valve body pushes the valve core to the inlet, the surface of the valve core is attached to the inlet and then seals the inlet, and the water flow reversely flowing back is sealed in the valve body.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A buoyancy-type check valve characterized in that: including valve body, case and damping cylinder, the valve body upper end is provided with the export, the valve body lower extreme is connected with the valve plate, the valve plate center is provided with the import, import and pump export intercommunication, be provided with the guide holder in the valve body, be provided with the guiding hole in the middle of the guide holder, the damping cylinder sets up on the guide holder, be provided with the piston in the damping cylinder, the piston divides into epicoele and cavity of resorption in with the damping cylinder, the damping cylinder lateral wall is provided with the runner, the runner communicates respectively the upper portion of epicoele with the lower part of cavity of resorption, the case includes hollow shutoff piece and hollow guide arm, the guide arm lower extreme connect in the center of shutoff piece, the guide arm upper end is passed the guiding hole stretches into the damping cylinder with piston.
2. A buoyancy-type check valve as claimed in claim 1, wherein: the bottom of the plugging piece is provided with a circular arc-shaped bulge, and the periphery of the upper end of the inlet is provided with a chamfer matched with the bulge.
3. A buoyancy-type check valve as claimed in claim 1, wherein: the guide rod is connected with the piston through threads.
4. A buoyancy-type check valve as claimed in claim 1, wherein: the valve core is made of magnesium-aluminum alloy.
5. A buoyancy-type check valve as claimed in claim 1, wherein: the valve core is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921330191.2U CN210510400U (en) | 2019-08-15 | 2019-08-15 | Buoyancy type check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921330191.2U CN210510400U (en) | 2019-08-15 | 2019-08-15 | Buoyancy type check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210510400U true CN210510400U (en) | 2020-05-12 |
Family
ID=70589864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921330191.2U Active CN210510400U (en) | 2019-08-15 | 2019-08-15 | Buoyancy type check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210510400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253813A (en) * | 2020-10-28 | 2021-01-22 | 重庆水泵厂有限责任公司 | Device for automatically preventing fluid from flowing back |
-
2019
- 2019-08-15 CN CN201921330191.2U patent/CN210510400U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253813A (en) * | 2020-10-28 | 2021-01-22 | 重庆水泵厂有限责任公司 | Device for automatically preventing fluid from flowing back |
| CN112253813B (en) * | 2020-10-28 | 2022-08-02 | 重庆水泵厂有限责任公司 | Device for automatically preventing fluid from flowing back |
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