CN221374678U - Laval nozzle structure in coaxial valve - Google Patents
Laval nozzle structure in coaxial valve Download PDFInfo
- Publication number
- CN221374678U CN221374678U CN202323435066.7U CN202323435066U CN221374678U CN 221374678 U CN221374678 U CN 221374678U CN 202323435066 U CN202323435066 U CN 202323435066U CN 221374678 U CN221374678 U CN 221374678U
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- Prior art keywords
- end cover
- wall
- sealing ring
- left end
- right end
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- 238000007789 sealing Methods 0.000 claims abstract description 51
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 22
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to the technical field of Laval nozzles and discloses a Laval nozzle structure in a coaxial valve, which comprises a left end cover, wherein a third movable sealing ring is arranged on the upper wall and the lower wall of the inner wall of the left end cover, a second static sealing ring is arranged on the upper side and the lower side of the right end of the outer wall of the left end cover, a driving cylinder is arranged on the right end of the left end cover, a right end cover is arranged on the right side of the driving cylinder, a first static sealing ring is arranged on the upper side and the lower side of the left side of the outer wall of the right end cover, a first movable sealing ring is arranged on the upper side and the lower side of the inner wall of the right end cover, a sealing gasket is arranged in the right end cover, and valves are arranged on the left side and the right side of the top wall of the driving cylinder. According to the utility model, through the mutual matching of the left end cover, the piston rod, the driving lever, the right end cover, the sealing gasket, the first movable sealing ring and the valve, the device can finish improving the flow velocity of a pipeline medium, guaranteeing the kinetic energy effect, improving the pollution discharge capacity of the valve and reducing the risk of blockage.
Description
Technical Field
The utility model relates to the technical field of Laval nozzles, in particular to a Laval nozzle structure in a coaxial valve.
Background
The coaxial valve is one of a plurality of valves, adopts an integrated structure of a valve body and an actuator, and the actuator is overlapped with the axis of the fluid pipeline, so that the installation space can be saved to the greatest extent, and the influence of the fluid pressure difference on the opening force of the valve is minimized. Compared with the common valve, the coaxial valve has the characteristics of high flow and high pressure control.
For most particulate material delivery systems, the pressure in the system is typically less than 1bar, while for waste liquid lifting systems on machine tools, the pressure in the system is typically only 4-5bar. Therefore, a coaxial valve with a laval nozzle structure that produces a secondary acceleration of the piping medium would be the best control valve for such a system, with a laval nozzle structure of the coaxial valve "flow rate increaser" being the most important advantage over conventional valves.
Through retrieval, chinese patent publication number is: CN213839741U discloses a coaxial valve body structure of inlet and outlet for valve, comprising a valve body, wherein the valve body is provided with a fluid inlet, a fluid outlet and a mounting port, the fluid inlet and the fluid outlet are coaxially arranged, an opening is arranged between the fluid inlet and the mounting port, and a drainage port is arranged between the mounting port and the fluid outlet. This novel fluid inlet and fluid outlet coaxial arrangement have improved the stability of fluid pressure regulating to make things convenient for on-the-spot installation, but in the in-service use, the phenomenon that the fluid that flows often takes place pressure reduction behind devices such as valve, slit and drill way that the passageway cross-section reduces suddenly, makes the kinetic energy of medium itself in the reduction pipeline, and then has reduced work efficiency's condition.
Disclosure of utility model
In order to make up for the defects, the utility model provides a Laval nozzle structure in a coaxial valve, which aims to solve the problems of reducing the kinetic energy of a medium in a pipeline and further reducing the working efficiency.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a Laval nozzle structure in coaxial valve, includes the left end cover, the third moves the sealing washer about the inner wall of left end cover, the second quiet sealing washer is all installed to the outer wall right-hand member upside of left end cover, the actuating cylinder is installed to the right-hand member of left end cover, the right-hand member lid is installed on the right side of actuating cylinder, first quiet sealing washer is all installed to the outer wall left side upper and lower extreme of right end cover, first moves the sealing washer is all installed to the inner wall upside of right end cover, the inside of right end cover is provided with the sealing washer, the roof left and right sides of actuating cylinder all is provided with the valve, piston assembly is installed to the inner wall of actuating cylinder.
As a further description of the above technical solution:
The piston assembly comprises a piston rod, the outer side of the piston rod is arranged on the inner wall of the driving cylinder, and the upper end and the lower end of the outer wall of the piston rod are respectively provided with a second movable sealing ring.
As a further description of the above technical solution:
The outer wall of the right end cover is provided with a fastener.
As a further description of the above technical solution:
and the inner hole of the piston rod is provided with a conical pipeline.
As a further description of the above technical solution:
The outer size of the right end of the left end cover is matched with the inner size of the left end of the driving cylinder, and the outer size of the left end of the right end cover is matched with the inner size of the right end of the driving cylinder.
As a further description of the above technical solution:
The sealing gasket, the first movable sealing ring, the first static sealing ring, the second movable sealing ring, the second static sealing ring and the third movable sealing ring are all made of rubber.
As a further description of the above technical solution:
The utility model has the following beneficial effects:
According to the utility model, through the mutual cooperation of the left end cover, the piston rod, the driving lever, the right end cover, the sealing gasket, the first movable sealing ring, the first static sealing ring, the second movable sealing ring, the second static sealing ring, the third movable sealing ring and the valve, the device can improve the flow velocity of a pipeline medium, ensure the kinetic energy effect of the pipeline medium, improve the pollution discharge capacity of the valve in unit time, reduce the risk of blockage and achieve the aim of improving the working efficiency.
Drawings
FIG. 1 is a cross-sectional view of a Laval nozzle structure in a coaxial valve in accordance with the present utility model;
Fig. 2 is a schematic view of a valve structure of a laval nozzle structure in a coaxial valve according to the present utility model.
Legend description:
1. A left end cover; 2. a piston rod; 3. a drive cylinder; 4. a right end cover; 5. a sealing gasket; 6. a fastener; 7. a first movable seal ring; 8. a first stationary seal ring; 9. a second movable seal ring; 10. a second static seal ring; 11. a third movable seal ring; 12. and (3) a valve.
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.
Referring to fig. 1 and 2, one embodiment provided by the present utility model is: the Laval nozzle structure in the coaxial valve comprises a left end cover 1, wherein a third movable sealing ring 11 is arranged on the upper and lower walls of the inner wall of the left end cover 1, a second static sealing ring 10 is arranged on the upper and lower sides of the right end of the outer wall of the left end cover 1, a driving cylinder 3 is arranged on the right end of the left end cover 1, a right end cover 4 is arranged on the right side of the driving cylinder 3, a first static sealing ring 8 is arranged on the upper and lower ends of the left side of the outer wall of the right end cover 4, a first movable sealing ring 7 is arranged on the upper and lower sides of the inner wall of the right end cover 4, a sealing gasket 5 is arranged in the right end cover 4, a valve 12 is arranged on the left and right sides of the top wall of the driving cylinder 3, a piston assembly is arranged on the inner wall of the driving cylinder 3, the piston assembly comprises a piston rod 2, the outer side of the piston rod 2 is arranged on the inner wall of the driving cylinder 3, and a second movable sealing ring 9 is arranged on the upper and lower ends of the outer wall of the piston rod 2; the inner hole of the piston rod 2 is provided with a conical pipeline; the sealing gasket 5, the first movable sealing ring 7, the first static sealing ring 8, the second movable sealing ring 9, the second static sealing ring 10 and the third movable sealing ring 11 are all made of rubber materials;
Specifically, the velocity of the medium entering the left end of the piston rod 2 is V1, and the flow velocity of the medium is small at the small section and the flow velocity of the medium at the large section is small, so that the fluid is continuously accelerated, and when the medium reaches the middle part of the piston rod 2, the flow velocity exceeds V1 and reaches V2. When the fluid passes through the middle part of the piston rod 2, the fluid does not follow the principle that the flow velocity at the small part of the cross section is large, but rather the flow velocity at the large part of the cross section is large, so that the flow velocity is higher, the velocity of the fluid is further accelerated to V3 when the end of the piston rod 2 is reached, huge thrust is generated, the flow velocity of a pipeline medium can be improved, the kinetic energy effect of the pipeline medium is ensured, the working efficiency of the device is improved, one of the two conical pipelines is a contraction effect, the other is an expansion effect, and the sealing effect can be effectively improved by rubber materials, so that the application range of the device is improved.
Referring to fig. 1, the outer wall of the right end cap 4 is mounted with a fastener 6; the outer size of the right end of the left end cover 1 is matched with the inner size of the left end of the driving cylinder 3, and the outer size of the left end of the right end cover 4 is matched with the inner size of the right end of the driving cylinder 3;
Specifically, the fastening member 6 can fasten the left end cover 1, the right end cover 4 and the driving rod 3, and the outer dimensions of the right end of the left end cover 1 and the left end of the right end cover 4 are matched with the inner dimensions of the driving cylinder 3, so that the medium can move more smoothly, and the practicability of the device can be improved.
Working principle: when the working starts, the left end valve 12 of the top wall of the driving cylinder 3 starts to exhaust, the right end valve 12 starts to intake, the speed of the medium entering the left end of the piston rod 2 is V1, and at this stage, the principle that when the fluid moves in the pipe, the flow speed at the small part of the cross section is large, and the flow speed at the large part of the cross section is small is followed, so that the fluid is continuously accelerated, and when the fluid reaches the middle part of the piston rod 2, the flow speed exceeds V1 and reaches V2. When the fluid passes through the middle part of the piston rod 2, the fluid does not follow the principle that the flow velocity at the small part of the cross section is large and the flow velocity at the large part of the cross section is small, but is just opposite, the larger the cross section is, the faster the flow velocity is, and when the end of the piston rod 2 is, the velocity of the fluid is further accelerated to V3, so that huge thrust is generated, the flow velocity of a pipeline medium can be improved, the kinetic energy effect of the pipeline medium is ensured, the pollution discharge capacity of the valve 12 is increased, the working efficiency of the device is improved, and finally the Laval nozzle actually plays a role of a flow velocity booster.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. Laval nozzle structure in coaxial valve, including left end cover (1), its characterized in that: the third moves sealing washer (11) are all installed to the inner wall upper and lower wall of left end cover (1), second quiet sealing washer (10) are all installed to the outer wall right-hand member upside down side of left end cover (1), actuating cylinder (3) are installed to the right-hand member of left end cover (1), right-hand member lid (4) are installed on the right side of actuating cylinder (3), first quiet sealing washer (8) are all installed to the outer wall left side upper and lower end of right-hand member lid (4), first moving sealing washer (7) are all installed to the inner wall upper and lower side of right-hand member lid (4), the inside of right-hand member lid (4) is provided with sealing washer (5), the roof left and right sides of actuating cylinder (3) all is provided with valve (12), piston assembly is installed to the inner wall of actuating cylinder (3).
2. The laval nozzle structure in the coaxial valve of claim 1, wherein: the piston assembly comprises a piston rod (2), the outer side of the piston rod (2) is arranged on the inner wall of the driving cylinder (3), and the upper end and the lower end of the outer wall of the piston rod (2) are respectively provided with a second movable sealing ring (9).
3. The laval nozzle structure in the coaxial valve of claim 1, wherein: the outer wall of the right end cover (4) is provided with a fastener (6).
4. The laval nozzle structure in the coaxial valve of claim 2, wherein: an inner hole of the piston rod (2) is provided with a conical pipeline.
5. The laval nozzle structure in the coaxial valve of claim 1, wherein: the outer size of the right end of the left end cover (1) is matched with the inner size of the left end of the driving cylinder (3), and the outer size of the left end of the right end cover (4) is matched with the inner size of the right end of the driving cylinder (3).
6. The laval nozzle structure in the coaxial valve of claim 2, wherein: the sealing gasket (5), the first movable sealing ring (7), the first static sealing ring (8), the second movable sealing ring (9), the second static sealing ring (10) and the third movable sealing ring (11) are all made of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323435066.7U CN221374678U (en) | 2023-12-18 | 2023-12-18 | Laval nozzle structure in coaxial valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323435066.7U CN221374678U (en) | 2023-12-18 | 2023-12-18 | Laval nozzle structure in coaxial valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221374678U true CN221374678U (en) | 2024-07-19 |
Family
ID=91873958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323435066.7U Active CN221374678U (en) | 2023-12-18 | 2023-12-18 | Laval nozzle structure in coaxial valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221374678U (en) |
-
2023
- 2023-12-18 CN CN202323435066.7U patent/CN221374678U/en active Active
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