CN117231801A - Stroke limit structure with multistage regulation - Google Patents
Stroke limit structure with multistage regulation Download PDFInfo
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- CN117231801A CN117231801A CN202311502640.8A CN202311502640A CN117231801A CN 117231801 A CN117231801 A CN 117231801A CN 202311502640 A CN202311502640 A CN 202311502640A CN 117231801 A CN117231801 A CN 117231801A
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- 230000000670 limiting effect Effects 0.000 claims abstract description 66
- 230000000903 blocking effect Effects 0.000 claims description 68
- 230000001105 regulatory effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012824 chemical production Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a stroke limiting structure with multistage adjustment. The invention comprises a connecting bracket which is connected with the valve, wherein the connecting bracket is provided with a first limit structure; a valve shaft which controls opening or closing of the valve by rotating itself; the driving shaft is sleeved outside the valve shaft so as to drive the valve shaft to synchronously rotate when the driving shaft rotates, and an external spline is arranged on the outer circle of the driving shaft; the limiting sleeve comprises a limiting sleeve inner hole and is characterized in that the limiting sleeve inner hole is provided with an inner spline matched with the outer spline, a second limiting structure is arranged on the outer circle of the limiting sleeve, and the second limiting structure can be contacted with the first limiting structure when rotating along with the driving shaft so as to maintain the opening of the valve. The invention can realize the free adjustment of the angle position, so that the control of the opening of the valve is more flexible and convenient, and the position of the limiting structure can be adjusted according to actual needs so as to meet different limiting requirements.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a stroke limiting structure with multistage adjustment.
Background
The valve is a device for controlling the flow and direction of a medium, and is widely applied to the fields of chemical industry, metallurgical industry, energy industry, mining, urban construction, urban water supply, drainage and the like. The butterfly valve is a valve which is turned back and forth by about 90 degrees by a disc type opening and closing member to open, close or regulate the flow of medium. The butterfly valve has the advantages of simple structure, small volume, light weight, material consumption saving, small installation size, small driving moment, simple and rapid operation, good flow regulating function and closing sealing property, and is one of the fastest-expanding valve varieties in recent decades.
The butterfly valve has a very wide application range, the variety and the number of the butterfly valve still continue to expand, and the butterfly valve has the characteristics of high temperature, high pressure, large caliber, high tightness, long service life and excellent regulation, and the butterfly valve has the advantages of multifunction development, and the reliability and other performance indexes of the butterfly valve reach higher levels. Some chemical plant valves require that certain openings be opened, mainly because the valves are used to regulate the flow, pressure, temperature, etc. of the medium in the pipeline. In the chemical production process, the parameters need to be maintained within a certain range to ensure the stable progress of the chemical reaction and the quality of the final product. If the valve is completely closed, medium in the pipeline can not flow or flow is not smooth, so that fluctuation of parameters such as pressure, temperature and the like in the pipeline is caused, and the stability of chemical reaction and the quality of a final product are further affected.
Disclosure of Invention
Therefore, the invention provides the stroke limiting structure with the multistage adjustment, which can realize the free adjustment of the angle position, so that the control of the opening of the valve is more flexible and convenient, and the position of the limiting structure can be adjusted according to actual needs so as to meet different limiting demands.
In order to solve the technical problems, the invention provides a stroke limiting structure with multistage adjustment, which comprises a valve, and comprises:
the connecting bracket is connected with the valve and is provided with a first limiting structure;
a valve shaft which controls opening or closing of the valve by rotating itself;
the driving shaft is sleeved outside the valve shaft so as to drive the valve shaft to synchronously rotate when the driving shaft rotates, and an external spline is arranged on the outer circle of the driving shaft;
the inner hole of the limit sleeve is provided with an inner spline matched with the outer spline, the outer circle of the limit sleeve is provided with a second limit structure, and the second limit structure can be contacted with the first limit structure when rotating along with the driving shaft so as to maintain the opening of the valve;
the relative positions of the second limiting structure and the valve shaft can be correspondingly adjusted by adjusting the matching positions of the internal spline and the external spline so as to adjust different opening degrees of the valve;
the first limiting structure comprises a first blocking piece connected to the connecting support, the first blocking piece is provided with a first blocking surface, the second limiting structure comprises a second blocking piece protruding radially along the outer circle of the limiting sleeve, the second blocking piece is provided with a second blocking surface, and when the second blocking piece rotates along with the driving shaft, the first blocking surface can be attached to the second blocking surface;
the second blocking block comprises a mounting block and an adjusting block, the mounting block is radially arranged along the outer circle of the limiting sleeve in a protruding mode, the adjusting block is detachably connected to the mounting block, the mounting block comprises a mounting block connecting surface, the adjusting block comprises a first adjusting block end surface and a second adjusting block end surface which are oppositely arranged, the mounting block connecting surface is attached to the first adjusting block end surface, and the second adjusting block end surface or the mounting block connecting surface is configured to be the second blocking surface;
when the end face of the second regulating block is used as the second blocking surface, the opening of the valve is regulated when the mounting block is connected with different regulating blocks to enable the second blocking surface to be attached to the first blocking surface, a first angle is formed between the end face of the first regulating block in the regulating blocks and the end face of the second regulating block, and the first angles of the different regulating blocks are different;
the adjacent two spline teeth in the internal spline and the external spline are in a second angle, and the deflection angle of the limit sleeve relative to the driving shaft is adjusted by adjusting the matching positions of the spline teeth of the internal spline and the external spline;
the opening degree of the valve is maintained as an integer multiple of the second angle, the first angle, a difference between the second angle and the first angle, or a sum of the integer multiple of the second angle and the first angle.
In one embodiment of the present invention, the valve maintains a predetermined opening degree when the first blocking surface is attached to the second blocking surface.
In one embodiment of the invention, the adjusting block is provided with a connecting hole, and a fixing screw is connected between the mounting block and the connecting hole of the adjusting block.
In one embodiment of the present invention, when the mounting block is not connected to the adjusting block, the mounting block connection surface serves as the second blocking surface, and when the mounting block rotates with the driving shaft, the mounting block connection surface can be attached to the first blocking surface, and the valve is in a closed state at this time.
In one embodiment of the present invention, the four regulating blocks are provided, the first angles of the four regulating blocks are 6 °, 7 °, 8 ° and 9 °, respectively, the second angle is 5 °, and the adjustment accuracy of the opening degree of the valve is maintained at 1 °.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the stroke limiting structure with multistage adjustment, through adjusting the matching positions of the internal spline and the external spline and installing the adjusting blocks with different angles, the accurate adjustment of the opening degree of the valve can be realized, the position control requirements under different working conditions are met, the spline design provides high-precision position control, reliable limiting effect can be maintained under various working environments, the internal spline and the external spline can bear larger load, and the reliability of the valve in the process of opening, closing or adjusting the medium flow is ensured.
The travel limiting structure can be used for adjusting the angle by only lifting the limiting sleeve and adjusting the matching position of the internal spline and the external spline or installing the adjusting block, so that time and labor are saved.
The stroke limiting structure ensures accurate control of the opening of the valve, ensures that medium in the pipeline can circulate stably, and improves production efficiency and product quality.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
Fig. 1 is a schematic view of a multi-stage adjustment travel limit structure of the present invention.
Fig. 2 is a sectional view taken along the X-X direction of fig. 1.
Fig. 3a is a front view of the stop collar of the present invention.
Fig. 3b is a top view of the stop collar of the present invention.
Fig. 4a is a front view of the drive shaft of the present invention.
Fig. 4b is a top view of the drive shaft of the present invention.
Fig. 5a is a front view of the connection bracket of the present invention.
Fig. 5b is a top view in the X-X direction of fig. 5 a.
Fig. 6a is a front view of the adjustment block of the present invention.
Fig. 6b is a top view in the X-X direction of fig. 6 a.
Fig. 7 is a schematic structural view of the connection adjusting block of the present invention.
Fig. 8a is a schematic view of the valve of the present invention when closed.
Fig. 8b is a schematic diagram of the valve of the present invention when opened 1 counter-clockwise.
Fig. 8c is a schematic diagram of the valve of the present invention when opened 2 counter-clockwise.
Fig. 8d is a schematic diagram of the valve of the present invention when opened 3 counter-clockwise.
Fig. 8e is a schematic diagram of the valve of the present invention when opened 4 counter-clockwise.
Fig. 8f is a schematic diagram of the valve of the present invention when opened 5 counter-clockwise.
Description of the specification reference numerals:
1. a connecting bracket; 11. a first limit structure; 12. a first blocking piece; 121. a first blocking surface;
2. a valve shaft;
3. a drive shaft; 31. an external spline;
4. a limit sleeve; 40. an internal spline; 41. a second limit structure; 42. a second blocking piece; 421. a second blocking surface; 43. a mounting block; 431. a mounting block connection surface; 44. an adjusting block; 44a, a first adjusting block end face; 44b, second adjusting block end surfaces; 45. and (5) fixing the screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1 to 2, a stroke limiting structure with multi-stage adjustment according to the present invention includes a valve, including:
the connecting bracket 1 is connected with the valve, and the connecting bracket 1 is provided with a first limiting structure 11; the upper end of the connecting bracket 1 is connected with a driving device of the valve through a bolt, and the lower end of the connecting bracket 1 is connected with the valve;
a valve shaft 2 connected to the driving means for controlling the opening or closing of the valve by rotating itself;
the driving shaft 3 is sleeved outside the valve shaft 2, so that the valve shaft 2 is driven to synchronously rotate through a key when the driving shaft rotates, and an external spline 31 is arranged on the outer circle of the driving shaft 3;
the limiting sleeve 4 is provided with an inner spline 40 matched with the outer spline 31 in an inner hole of the limiting sleeve 4, a second limiting structure 41 is arranged on the outer circle of the limiting sleeve 4, and the second limiting structure 41 can be contacted with the first limiting structure 11 when rotating along with the driving shaft 3 so as to maintain the opening of the valve;
wherein, the relative position of the second limit structure 41 and the valve shaft 2 can be correspondingly adjusted by adjusting the matching positions of the internal spline 40 and the external spline 31, so as to adjust different opening degrees of the valve.
Through the arrangement, the second limiting structure 41 contacts with the first limiting structure 11 when rotating along with the driving shaft 3, and the valve is limited to be continuously closed, so that the valve maintains a certain opening degree, the stable circulation of medium in a pipeline is ensured, the accurate, stable and reliable position control of equipment in the operation process is ensured, and the production efficiency and the product quality are improved. In addition, when the angle needs to be adjusted, the limit sleeve 4 is lifted up to a certain height h to the position of a broken line shown by referring to fig. 1, and can be separated from the external spline 31 of the driving shaft 3 and the matching position of the internal spline 31 and the external spline 31 can be adjusted.
In some embodiments, referring to fig. 3a, 3b, 5a, and 5b, the first limiting structure 11 includes a first blocking piece 12 connected to the connection bracket 1, the first blocking piece 12 includes a first blocking surface 121, the second limiting structure 41 includes a second blocking piece 42 protruding radially along an outer circumference of the limiting sleeve 4, and the second blocking piece 42 includes a second blocking surface 421, and when the second blocking piece 42 rotates with the driving shaft 3, the first blocking surface 121 can be attached to the second blocking surface 421. At this time, the valve maintains a predetermined opening degree when the first blocking surface 121 is attached to the second blocking surface 421.
In some embodiments, referring to fig. 6a, 6b and 7, the first limiting structure 11 includes a first blocking piece 12 connected to the connecting bracket 1, the first blocking piece 12 has a first blocking surface 121, the second limiting structure 41 includes a second blocking piece 42 protruding radially along the outer circumference of the limiting sleeve 4, the second blocking piece 42 has a second blocking surface 421, and the first blocking surface 121 can be adhered to the second blocking surface 421 when the second blocking piece 42 rotates with the driving shaft 3; the second blocking piece 42 includes a mounting block 43 protruding radially along an outer circle of the limiting sleeve 4 and an adjusting block 44 detachably connected to the mounting block 43, the mounting block 43 includes a mounting block connecting surface 431, the adjusting block 44 includes a first adjusting block end surface 44a and a second adjusting block end surface 44b that are oppositely disposed, the mounting block connecting surface 431 is attached to the first adjusting block end surface 44a, the second adjusting block end surface 44b or the mounting block connecting surface 431 is configured as the second blocking surface 421, the adjusting block 44 has a connecting hole, and a fixing screw 45 is connected between the mounting block 43 and the connecting hole of the adjusting block 44.
Because spline connection can bear great load, because the accurate design of spline, above-mentioned limit structure can provide high accuracy's position control, has outstanding stability, and spline formula mechanical stop device can keep reliable spacing effect under various operational environment. The number of spline teeth that can be opened on the shaft is limited, and the angle that can be adjusted is limited, considering the strength of rigidity that the spline can withstand.
Specifically, when the mounting block 43 is not connected to the adjusting block 44, the mounting block connection surface 431 serves as the second blocking surface 421, and when the mounting block 43 rotates with the driving shaft 3, the mounting block connection surface 431 can be attached to the first blocking surface 121, and at this time, the valve is in a closed state.
When the second block end surface 44b is used as the second blocking surface 421, a first angle (α) is formed between the first block end surface 44a and the second block end surface 44b of the block 44 by connecting different blocks 44 to the mounting block 43 to adjust the opening of the valve when the second blocking surface 421 is attached to the first blocking surface 121, and the first angles of the different blocks 44 are different. And a second angle is formed between two adjacent spline teeth in the internal spline 40 and the external spline 31, and the deflection angle of the limit sleeve 4 relative to the driving shaft 3 is adjusted by adjusting the matching positions of the spline teeth of the internal spline 40 and the external spline 31, wherein the second angle is smaller than the first angle.
The opening degree of the valve is maintained as an integer multiple of the second angle, the first angle, a difference between the second angle and the first angle, or a sum of the integer multiple of the second angle and the first angle.
Since the opening and closing member of a valve (such as a butterfly valve) is typically rotated back and forth by 90 ° to open, close or regulate the flow of a medium. The number of teeth of the internal and external splines 31 is 72, and the angle between two adjacent teeth (i.e. the second angle) is 5 °, and each time the stop collar 4 is deflected by 5 ° clockwise with respect to the driving shaft 3, the valve opening angle (i.e. the opening degree of the valve that can be maintained) can be limited to n×5°, where n is an integer.
In some embodiments, the number of teeth of the internal and external splines 31 is 72, the angles between two adjacent teeth (i.e. the second angles) are 5 °, and by adding four adjusting blocks 44 with simulated angles, the respective first angles are 6 °, 7 °, 8 ° and 9 °, the control of the valve opening can be adjusted to n×1 °, so as to realize free adjustment of every 1 °, and the maintained adjustment precision of the valve opening is 1 °, and if a more accurate opening is obtained, only the equal number of spline teeth and the corresponding first angle need to be adjusted.
Referring to fig. 8a to 8f, the valve is closed clockwise and opened counterclockwise;
when the valve is fully closed, the mounting block connecting surface 431 is attached to the first blocking surface 121; on the basis of the method, the device comprises the following steps:
if the valve needs to be opened by 1 degree anticlockwise, the spline position is adjusted, the limiting sleeve 4 is deflected by 5 degrees anticlockwise relative to the driving shaft 3, and the adjusting block 44 with the first angle of 6 degrees is fixed on the mounting block 43 by the fixing screw 45, so that the valve is limited to be closed continuously when the opening degree of the valve is 1 degree;
if the valve needs to be opened 2 degrees anticlockwise, the spline position is adjusted, the limiting sleeve 4 is deflected 5 degrees anticlockwise relative to the driving shaft 3, and the adjusting block 44 with the first angle of 7 degrees is fixed on the mounting block 43 by the fixing screw 45, so that the valve is limited to be closed continuously when the opening degree of the valve is 2 degrees;
if the valve needs to be opened by 3 degrees anticlockwise, the spline position is adjusted, the limiting sleeve 4 is deflected by 5 degrees anticlockwise relative to the driving shaft 3, and the adjusting block 44 with the first angle of 8 degrees is fixed on the mounting block 43 by the fixing screw 45, so that the valve is limited to be continuously closed when the valve is opened by 3 degrees;
if the valve needs to be opened by 4 degrees anticlockwise, the spline position is adjusted, the limiting sleeve 4 is deflected by 5 degrees anticlockwise relative to the driving shaft 3, and the adjusting block 44 with the first angle of 9 degrees is fixed on the mounting block 43 by the fixing screw 45, so that the valve is limited to be continuously closed when the opening of the valve is 4 degrees;
if the valve needs to be opened anticlockwise by n 5 degrees, n is an integer, the spline position is adjusted, the limiting sleeve 4 is deflected clockwise by n 5 degrees relative to the driving shaft 3, and the valve is limited to be continuously closed when the valve is opened by n 5 degrees;
if the valve needs to be opened by 6 degrees, 7 degrees, 8 degrees and 9 degrees anticlockwise, the adjusting block 44 with the first angle of 6 degrees, 7 degrees, 8 degrees and 9 degrees is correspondingly fixed on the mounting block 43 by the fixing screw 45, so that the valve is limited to be closed continuously when the opening of the valve is 6 degrees, 7 degrees, 8 degrees and 9 degrees respectively;
if the valve needs to be opened by 11 degrees anticlockwise, the spline position is adjusted, the limiting sleeve 4 is deflected by 5 degrees clockwise relative to the driving shaft 3, and the adjusting block 44 with the first angle of 6 degrees is fixed on the mounting block 43 by the fixing screw 45, so that the valve is limited to be continuously closed when the opening of the valve is 11 degrees;
the process is repeated, so that the valve opening can be freely adjusted within the range of 0-90 degrees at each 1 degree, and different limiting requirements can be met according to actual requirements.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a stroke limit structure with multistage regulation, includes the valve, its characterized in that includes:
the connecting bracket (1) is connected with the valve, and the connecting bracket (1) is provided with a first limit structure (11);
a valve shaft (2) which controls the opening or closing of the valve by rotating itself;
the driving shaft (3) is sleeved outside the valve shaft (2) to drive the valve shaft (2) to synchronously rotate when the driving shaft rotates, and an external spline (31) is arranged on the outer circle of the driving shaft (3);
the limiting sleeve (4), an inner hole of the limiting sleeve (4) is provided with an inner spline (40) matched with the outer spline (31), a second limiting structure (41) is arranged on the outer circle of the limiting sleeve (4), and the second limiting structure (41) can be contacted with the first limiting structure (11) when rotating along with the driving shaft (3) so as to maintain the opening of the valve;
wherein, the relative position of the second limit structure (41) and the valve shaft (2) can be correspondingly adjusted by adjusting the matching positions of the internal spline (40) and the external spline (31) so as to adjust different opening degrees of the valve;
the first limiting structure (11) comprises a first blocking piece (12) connected to the connecting bracket (1), the first blocking piece (12) is provided with a first blocking surface (121), the second limiting structure (41) comprises a second blocking piece (42) protruding radially along the outer circle of the limiting sleeve (4), the second blocking piece (42) is provided with a second blocking surface (421), and when the second blocking piece (42) rotates along with the driving shaft (3), the first blocking surface (121) can be attached to the second blocking surface (421);
the second blocking block (42) comprises a mounting block (43) protruding radially along the outer circle of the limit sleeve (4) and an adjusting block (44) detachably connected to the mounting block (43), the mounting block (43) comprises a mounting block connecting surface (431), the adjusting block (44) comprises a first adjusting block end surface (44 a) and a second adjusting block end surface (44 b) which are oppositely arranged, the mounting block connecting surface (431) is in fit connection with the first adjusting block end surface (44 a), and the second adjusting block end surface (44 b) or the mounting block connecting surface (431) is configured as a second blocking surface (421);
when the second adjusting block end face (44 b) is used as the second blocking face (421), the opening degree of the valve is adjusted when the second blocking face (421) is attached to the first blocking face (121) by connecting different adjusting blocks (44) to the mounting block (43), a first angle is formed between the first adjusting block end face (44 a) and the second adjusting block end face (44 b) in the adjusting blocks (44), and the first angles of the different adjusting blocks (44) are different;
the adjacent two spline teeth in the internal spline (40) and the external spline (31) are in a second angle, and the deflection angle of the limit sleeve (4) relative to the driving shaft (3) is adjusted by adjusting the matching positions of the spline teeth of the internal spline (40) and the external spline (31);
the opening degree of the valve is maintained as an integer multiple of the second angle, the first angle, a difference between the second angle and the first angle, or a sum of the integer multiple of the second angle and the first angle.
2. A stroke limiting structure with multi-stage adjustment according to claim 1, wherein the valve maintains a preset opening when the first blocking surface (121) is in abutment with the second blocking surface (421).
3. A stroke limiting structure with multi-stage adjustment according to claim 1, characterized in that the adjustment block (44) has a connecting hole, and a fixing screw (45) is connected between the mounting block (43) and the connecting hole of the adjustment block (44).
4. A stroke limiting structure with multi-stage adjustment according to claim 1, wherein the mounting block connection surface (431) acts as the second blocking surface (421) when the mounting block (43) is not connected to the adjustment block (44), and the mounting block connection surface (431) can be attached to the first blocking surface (121) when the mounting block (43) rotates with the drive shaft (3), and the valve is in a closed state at this time.
5. A stroke limiting structure with multi-stage adjustment according to claim 1, characterized in that the four adjustment blocks (44) are provided, the first angles of the four adjustment blocks (44) being 6 °, 7 °, 8 ° and 9 °, respectively, the second angle being 5 °, the adjustment accuracy of the opening degree of the valve being maintained at 1 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311502640.8A CN117231801B (en) | 2023-11-13 | 2023-11-13 | Stroke limit structure with multistage regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311502640.8A CN117231801B (en) | 2023-11-13 | 2023-11-13 | Stroke limit structure with multistage regulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117231801A true CN117231801A (en) | 2023-12-15 |
| CN117231801B CN117231801B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311502640.8A Active CN117231801B (en) | 2023-11-13 | 2023-11-13 | Stroke limit structure with multistage regulation |
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| Country | Link |
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| CN (1) | CN117231801B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408909A1 (en) * | 1994-03-16 | 1995-09-21 | Bosch Gmbh Robert | Motor throttle prodn. |
| JP2003254450A (en) * | 2002-03-06 | 2003-09-10 | Japan Water Works Association | Butterfly valve with flooding function |
| CN104613183A (en) * | 2015-02-15 | 2015-05-13 | 江苏神通阀门股份有限公司 | High-pressure butterfly valve |
| CN211449675U (en) * | 2019-11-25 | 2020-09-08 | 江西省万年县康欣机械有限公司 | Quick opening and closing sealing gate valve |
| CN215257898U (en) * | 2021-07-09 | 2021-12-21 | 武汉百耐流体控制设备有限公司 | Valve optional position locking device |
| CN218377722U (en) * | 2022-09-13 | 2023-01-24 | 吴忠仪表有限责任公司 | Limiting mechanism of stroke-adjustable butterfly valve |
-
2023
- 2023-11-13 CN CN202311502640.8A patent/CN117231801B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4408909A1 (en) * | 1994-03-16 | 1995-09-21 | Bosch Gmbh Robert | Motor throttle prodn. |
| JP2003254450A (en) * | 2002-03-06 | 2003-09-10 | Japan Water Works Association | Butterfly valve with flooding function |
| CN104613183A (en) * | 2015-02-15 | 2015-05-13 | 江苏神通阀门股份有限公司 | High-pressure butterfly valve |
| CN211449675U (en) * | 2019-11-25 | 2020-09-08 | 江西省万年县康欣机械有限公司 | Quick opening and closing sealing gate valve |
| CN215257898U (en) * | 2021-07-09 | 2021-12-21 | 武汉百耐流体控制设备有限公司 | Valve optional position locking device |
| CN218377722U (en) * | 2022-09-13 | 2023-01-24 | 吴忠仪表有限责任公司 | Limiting mechanism of stroke-adjustable butterfly valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117231801B (en) | 2024-02-13 |
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