CN220320331U - Expansion butterfly valve - Google Patents
Expansion butterfly valve Download PDFInfo
- Publication number
- CN220320331U CN220320331U CN202321433715.7U CN202321433715U CN220320331U CN 220320331 U CN220320331 U CN 220320331U CN 202321433715 U CN202321433715 U CN 202321433715U CN 220320331 U CN220320331 U CN 220320331U
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- valve
- rod
- valve seat
- annular
- butterfly
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- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model relates to the technical field of valves, in particular to an expansion butterfly valve, which comprises a valve seat, wherein a valve body which is vertically arranged is arranged at the upper part of the valve seat, the lower end of the valve body is fixedly connected with the valve seat, a fixed seat is arranged at the lower part of the valve seat, a valve rod which is vertically arranged is rotationally connected with the valve body, the lower end of the valve rod penetrates through the valve seat and is rotationally connected with the fixed seat, the valve rod is in sealed and rotational connection with the valve seat, a butterfly plate is arranged in the valve seat, and one side of the butterfly plate is fixedly connected with the valve rod; through the reverse rotation valve rod, drive the butterfly plate and rotate, after the butterfly plate rotates to the certain position, the slide bar passes through the horizontal segment and enters into the slope section to inside the extrusion piston cylinder, make the inside liquid of piston cylinder enter into annular expansion pad, and drive annular expansion pad and expand, rely on annular expansion pad and butterfly plate side extrusion to lean on, thereby close the valve, and improve the leakproofness of butterfly plate.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an expansion butterfly valve.
Background
The butterfly valve is also called as a flap valve, is a regulating valve with a simple structure, and the butterfly valve is a valve which is opened and closed by rotating a closing member (a valve clack or a butterfly plate) around a valve shaft, and can be used for controlling the flow of various fluids such as air, water, steam and the like;
at present, when the valve plate rotates in the opening and closing process, the conditions of abrasion of the sealing ring, displacement of the sealing ring and the like can be caused, so that the sealing performance of the butterfly valve is reduced, the use effect and the use safety are affected, and therefore, the expansion butterfly valve is provided for improving the sealing performance of the butterfly valve.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides an expansion butterfly valve for improving the sealing performance of the butterfly valve.
The utility model solves the technical problems that the adopted technical scheme is an expansion butterfly valve, which comprises a valve seat, wherein a valve body which is vertically arranged is arranged at the upper part of the valve seat, the lower end of the valve body is fixedly connected with the valve seat, a fixed seat is arranged at the lower part of the valve seat, a valve rod which is vertically arranged is rotationally connected with the valve body, the lower end of the valve rod penetrates through the valve seat and is rotationally connected with the fixed seat, the valve rod is in sealed and rotational connection with the valve seat, a butterfly plate is arranged in the valve seat, and one side of the butterfly plate is fixedly connected with the valve rod;
the valve seat is internally provided with an annular expansion structure, the outer side of the valve body is provided with a hydraulic driving structure, the hydraulic driving structure is used for driving the annular expansion structure, and the annular expansion structure is in extrusion contact with the side face of the butterfly plate.
By adopting the technical scheme, when the valve is required to be closed, the valve rod is reversely rotated to drive the butterfly plate to rotate, and when the butterfly plate rotates to a certain position, the valve rod is continuously rotated to drive the hydraulic driving structure, the annular expansion structure is opened by virtue of the hydraulic driving structure, and the annular expansion structure is in extrusion contact with the side surface of the butterfly plate, so that the sealing performance of the butterfly plate is improved; meanwhile, the rotation stability of the valve rod can be improved by virtue of the action of the fixing seat;
it should be noted that the valve rod of the present utility model may be driven by a driving motor or manually rotated.
Specifically, the hydraulic driving structure comprises a slot arranged on the outer side of the valve body, a sliding rod is arranged in the slot, a guide groove is formed in the valve rod, the guide groove comprises a horizontal section and an inclined section, one end of the sliding rod is positioned in the guide groove and is in sliding connection with the guide groove, and the other end of the sliding rod penetrates through the slot;
the valve is characterized in that a piston cylinder is arranged on the outer side of the valve body, liquid is filled in the piston cylinder, the lower end of the piston cylinder is fixedly connected with the outer side of the valve seat, a piston plate is connected in the piston cylinder in a sealing sliding manner, a piston rod is arranged on one side of the piston plate, the upper end of the piston rod penetrates through the piston cylinder and is fixedly connected with a sliding rod, a liquid outlet hole is formed in the piston cylinder, and the liquid outlet hole is communicated with the annular expansion structure through a pipeline.
By adopting the technical scheme, when the valve rod reversely rotates, and the sliding rod passes through the horizontal section and enters the inclined section, the sliding rod is driven to move by virtue of the inclined section, the sliding rod is spirally moved downwards in the inclined section by virtue of the grooving, when the sliding rod moves downwards, the piston rod is driven to move downwards, the piston plate is driven to move downwards when the piston rod moves downwards, so that the inside of the piston cylinder is extruded, liquid in the piston cylinder enters the annular expansion structure through the liquid outlet hole and the pipeline, the annular expansion structure is driven to expand, the valve is closed by extrusion contact with the side surface of the butterfly plate, and the sealing property of the butterfly plate is improved;
when the valve rod rotates positively, the slide rod is driven to move upwards by the action of the inclined section, the piston rod is driven to move upwards when the slide rod moves upwards, the piston plate does not squeeze the inside of the piston cylinder when the piston rod moves upwards, the annular expansion structure is quickly contracted at the moment and returns to the initial state, when the valve rod rotates positively to a certain position, the slide rod enters the horizontal section, and the butterfly plate is continuously rotated to move, so that the valve is opened.
Specifically, the annular expansion structure comprises annular grooves positioned on two sides of the butterfly plate, the annular grooves are arranged on the inner wall of the valve seat, annular expansion pads are arranged in the annular grooves and are communicated with the piston cylinder through pipelines, and the annular expansion pads are positioned in the annular grooves in an initial state.
By adopting the technical scheme, when the sliding rod moves downwards, the piston rod is driven to move downwards and extrude the inside of the piston cylinder, liquid in the piston cylinder enters the annular expansion pad through the liquid outlet hole and the pipeline and drives the annular expansion pad to expand, and the annular expansion pad is extruded and abutted against the side face of the butterfly plate, so that the butterfly plate is sealed; meanwhile, the stability of the annular expansion pad can be improved by virtue of the annular groove.
Specifically, the annular expansion pad is adhered in the annular groove.
By adopting the technical scheme, the stability of the annular expansion pad can be improved by bonding the annular expansion pad in the annular groove.
Specifically, one side of the butterfly plate, which is close to the valve rod, is provided with a supporting plate, and the outer side of the valve seat is provided with a plurality of groups of connecting rods.
By adopting the technical scheme, the rotation stability of the butterfly plate can be improved by virtue of the supporting plate, so that the butterfly plate can be driven to rotate when the valve rod is rotated; the stability of the valve seat can be improved by means of the action of the connecting rod.
The utility model has the beneficial effects that:
(1) According to the expansion butterfly valve, the valve rod is reversely rotated to drive the butterfly plate to rotate, when the butterfly plate rotates to a certain position, the sliding rod passes through the horizontal section and enters the inclined section, so that the inside of the piston cylinder is extruded, liquid in the piston cylinder enters the annular expansion pad and is driven to expand, and the annular expansion pad is extruded and abutted against the side face of the butterfly plate, so that the valve is closed, and the sealing performance of the butterfly plate is improved.
(2) According to the expansion butterfly valve, when the valve rod rotates positively, the slide rod is driven to move upwards under the action of the guide groove, the interior of the piston cylinder is not extruded after the slide rod passes through the upward moving section and enters the horizontal section, the annular expansion pad is contracted at the moment and returns to the initial state, and when the valve rod continues to rotate positively, the butterfly plate is driven to move, so that the valve is opened.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is an isometric view of the present utility model;
FIG. 2 is a schematic view of a support plate connection structure according to the present utility model;
FIG. 3 is a schematic view of the connection structure of the valve body of the present utility model when opened;
FIG. 4 is a schematic view of the connection structure of the valve body of the present utility model when closed;
FIG. 5 is an enlarged schematic view of the area A of FIG. 3 according to the present utility model;
FIG. 6 is a schematic cross-sectional view of an annular groove of the present utility model;
FIG. 7 is a schematic view of a guide slot structure according to the present utility model;
in the figure: 1. a valve seat; 2. a valve body; 3. a fixing seat; 4. a valve stem; 5. a butterfly plate; 6. slotting; 7. a slide bar; 8. a guide groove; 9. a piston cylinder; 10. a piston plate; 11. a piston rod; 12. a liquid outlet hole; 13. an annular expansion pad; 14. an annular groove; 15. a support plate; 16. a connecting rod; 17. a horizontal section; 18. an inclined section.
Detailed Description
The utility model is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.
In order to improve the tightness of a butterfly valve, as shown in fig. 1 and 2, an expansion butterfly valve according to the present utility model includes a valve seat 1, a valve body 2 vertically disposed is disposed at an upper portion of the valve seat 1, a lower end of the valve body 2 is fixedly connected with the valve seat 1, a fixing seat 3 is disposed at a lower portion of the valve seat 1, a valve rod 4 vertically disposed is rotationally connected to the valve body 2, a lower end of the valve rod 4 passes through the valve seat 1 and is rotationally connected with the fixing seat 3, the valve rod 4 is rotationally connected with the valve seat 1 in a sealing manner, a butterfly plate 5 is disposed in the valve seat 1, and one side of the butterfly plate 5 is fixedly connected with the valve rod 4;
an annular expansion structure is arranged in the valve seat 1, a hydraulic driving structure is arranged on the outer side of the valve body 2 and used for driving the annular expansion structure, and the annular expansion structure is in extrusion contact with the side face of the butterfly plate 5.
When the valve is required to be closed in use, the valve rod 4 is reversely rotated to drive the butterfly plate 5 to rotate, and when the butterfly plate 5 rotates to a certain position, the valve is closed, and the valve rod 4 is continuously rotated to drive the hydraulic driving structure, the annular expansion structure is opened by virtue of the hydraulic driving structure, and the annular expansion structure is in extrusion contact with the side surface of the butterfly plate 5, so that the tightness of the butterfly plate 5 is improved; meanwhile, the rotation stability of the valve rod 4 can be improved by virtue of the action of the fixing seat 3;
it should be noted that the valve rod 4 according to the present utility model may be driven by a driving motor or may be manually rotated.
To facilitate driving the annular expansion structure, as shown in fig. 1, 3, 5 and 7, the hydraulic driving structure further comprises a slot 6 arranged on the outer side of the valve body 2, a sliding rod 7 is arranged in the slot 6, a guide groove 8 is arranged on the valve rod 4, the guide groove 8 comprises a horizontal section 17 and an inclined section 18, one end of the sliding rod 7 is positioned in the guide groove 8 and is in sliding connection with the guide groove 8, and the other end of the sliding rod 7 passes through the slot 6;
the valve is characterized in that a piston cylinder 9 is arranged on the outer side of the valve body 2, liquid is filled in the piston cylinder 9, the lower end of the piston cylinder 9 is fixedly connected with the outer side of the valve seat 1, a piston plate 10 is connected in the piston cylinder 9 in a sealing sliding manner, a piston rod 11 is arranged on one side of the piston plate 10, the upper end of the piston rod 11 penetrates through the piston cylinder 9 and is fixedly connected with the sliding rod 7, a liquid outlet hole 12 is formed in the piston cylinder 9, and the liquid outlet hole 12 is communicated with the annular expansion structure through a pipeline.
When the butterfly valve is used, the valve rod 4 reversely rotates, the slide rod 7 passes through the horizontal section 17 and enters the inclined section 18, the slide rod 7 is driven to move by virtue of the inclined section 18, the slide rod 7 is spirally moved downwards in the inclined section 18 by virtue of the slot 6, the piston rod 11 is driven to move downwards when the slide rod 7 moves downwards, the piston plate 10 is driven to move downwards when the piston rod 11 moves downwards, so that the inside of the piston cylinder 9 is extruded, liquid in the piston cylinder 9 enters the annular expansion structure through the liquid outlet hole 12 and the pipeline, the annular expansion structure is driven to expand, the side face of the butterfly plate 5 is in extrusion contact, the valve is closed, and the sealing performance of the butterfly plate 5 is improved;
when the valve rod 4 rotates positively, the slide rod 7 is driven to move upwards by the action of the inclined section 18 again, the piston rod 11 is driven to move upwards when the slide rod 7 moves upwards, the piston plate 10 does not squeeze the inside of the piston cylinder 9 when the piston rod 11 moves upwards, the annular expansion structure is quickly contracted and returns to the initial state, when the valve rod 4 rotates positively to a certain position, the slide rod 7 enters the horizontal section, and the butterfly plate 5 continues to rotate to move, so that the valve is opened.
In order to facilitate the driving of the annular expansion pad 13 to expand, as shown in fig. 5 and 6, the utility model further comprises that the annular expansion structure comprises annular grooves 14 positioned at two sides of the butterfly plate 5, the annular grooves 14 are arranged on the inner wall of the valve seat 1, the annular expansion pads 13 are arranged in the annular grooves 14, the annular expansion pad 13 is communicated with the piston cylinder 9 through a pipeline, and the annular expansion pad 13 is positioned in the annular groove 14 in the initial state.
When the butterfly plate sealing device is used, when the sliding rod 7 moves downwards, the piston rod 11 is driven to move downwards and squeeze the inside of the piston cylinder 9, liquid in the piston cylinder 9 enters the annular expansion pad 13 through the liquid outlet 12 and the pipeline, the annular expansion pad 13 is driven to expand, and the butterfly plate 5 is sealed by means of the annular expansion pad 13 and the side face of the butterfly plate 5 in a squeezing and abutting mode; at the same time, the stability of the annular expansion cushion 13 can be improved by means of the annular groove 14.
Illustratively, as shown in FIG. 6, the present utility model further includes the annular expansion pad 13 being bonded within the annular groove 14.
In use, the stability of the annular expansion pad 13 may be improved by adhering the annular expansion pad 13 within the annular groove 14.
As shown in fig. 1 and 2, the utility model further comprises a supporting plate 15 arranged on one side of the butterfly plate 5 close to the valve rod 4, and a plurality of groups of connecting rods 16 arranged on the outer side of the valve seat 1.
When the butterfly plate is used, the rotation stability of the butterfly plate 5 can be improved by virtue of the supporting plate 15, so that the butterfly plate 5 is driven to rotate when the valve rod 4 is rotated; the stability of the valve seat 1 can be improved by means of the action of the connecting rod 16.
When the valve is required to be closed, the valve rod 4 is reversely rotated to drive the butterfly plate 5 to rotate, the valve is closed when the butterfly plate 5 rotates to a certain position, the valve rod 4 is continuously rotated at the moment, the valve rod 4 reversely rotates, the slide rod 7 is driven to move by virtue of the inclined section 18 after passing through the horizontal section and entering the inclined section 18, the slide rod 7 is spirally moved downwards in the inclined section 18 by virtue of the groove 6, the piston rod 11 is driven to move downwards when the slide rod 7 moves downwards, the piston rod 11 is driven to move downwards when the piston rod 11 moves downwards, so that the interior of the piston cylinder 9 is extruded, liquid in the piston cylinder 9 enters the annular expansion pad 13 through the liquid outlet 12 and a pipeline, the annular expansion pad 13 is driven to expand, and the butterfly plate 5 is sealed by virtue of the annular expansion pad 13 and the side surface of the butterfly plate 5;
when the valve needs to be opened, the valve rod 4 is rotated forward, the slide rod 7 is driven to move upwards under the action of the guide groove 8, after the slide rod 7 passes through the upward moving section and enters the horizontal section, the piston cylinder 9 is not extruded, the annular expansion pad 13 is contracted at the moment and is restored to the initial state, and when the valve rod 4 continues to rotate forward, the butterfly plate 5 is driven to move, so that the valve is opened.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing examples, and that the foregoing description and description are merely illustrative of the principles of this utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The expansion butterfly valve is characterized by comprising a valve seat (1), wherein a valve body (2) which is vertically arranged is arranged on the upper portion of the valve seat (1), the lower end of the valve body (2) is fixedly connected with the valve seat (1), a fixed seat (3) is arranged on the lower portion of the valve seat (1), a valve rod (4) which is vertically arranged is rotationally connected with the valve body (2), the lower end of the valve rod (4) penetrates through the valve seat (1) and is rotationally connected with the fixed seat (3), the valve rod (4) is in sealing and rotational connection with the valve seat (1), a butterfly plate (5) is arranged in the valve seat (1), and one side of the butterfly plate (5) is fixedly connected with the valve rod (4);
an annular expansion structure is arranged in the valve seat (1), a hydraulic driving structure is arranged on the outer side of the valve body (2), the hydraulic driving structure is used for driving the annular expansion structure, and the annular expansion structure is in extrusion contact with the side face of the butterfly plate (5).
2. An expansion butterfly valve according to claim 1, characterized in that the hydraulic driving structure comprises a slot (6) arranged outside the valve body (2), a slide bar (7) is arranged in the slot (6), a guide groove (8) is arranged on the valve rod (4), the guide groove (8) comprises a horizontal section (17) and an inclined section (18), one end of the slide bar (7) is positioned in the guide groove (8) and is in sliding connection with the guide groove (8), and the other end of the slide bar (7) passes through the slot (6);
the valve is characterized in that a piston cylinder (9) is arranged on the outer side of the valve body (2), liquid is filled in the piston cylinder (9), the lower end of the piston cylinder (9) is fixedly connected with the outer side of the valve seat (1), a piston plate (10) is connected in a sealing sliding manner in the piston cylinder (9), a piston rod (11) is arranged on one side of the piston plate (10), the upper end of the piston rod (11) penetrates through the piston cylinder (9) and is fixedly connected with the sliding rod (7), a liquid outlet hole (12) is formed in the piston cylinder (9), and the liquid outlet hole (12) is communicated with the annular expansion structure through a pipeline.
3. An expansion butterfly valve according to claim 2, characterized in that the annular expansion structure comprises annular grooves (14) on both sides of the butterfly plate (5), the annular grooves (14) are arranged on the inner wall of the valve seat (1), annular expansion pads (13) are arranged in the annular grooves (14), the annular expansion pads (13) are communicated with the piston cylinder (9) through pipelines, and the annular expansion pads (13) are initially positioned in the annular grooves (14).
4. An expansion butterfly valve according to claim 3, characterized in that the annular expansion pad (13) is glued inside the annular groove (14).
5. An expansion butterfly valve according to claim 1, characterized in that the butterfly plate (5) is provided with a support plate (15) on the side close to the valve rod (4), and that the valve seat (1) is provided with several groups of connecting rods (16) on the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321433715.7U CN220320331U (en) | 2023-06-06 | 2023-06-06 | Expansion butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321433715.7U CN220320331U (en) | 2023-06-06 | 2023-06-06 | Expansion butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220320331U true CN220320331U (en) | 2024-01-09 |
Family
ID=89416810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321433715.7U Active CN220320331U (en) | 2023-06-06 | 2023-06-06 | Expansion butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220320331U (en) |
-
2023
- 2023-06-06 CN CN202321433715.7U patent/CN220320331U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |