A high-temperature resistant intelligent butterfly valve

Abstract

This utility model belongs to the field of valve technology, specifically relating to a high-temperature resistant intelligent butterfly valve, including a valve body. An upper valve stem is rotatably connected to the top of the valve body, and a lower valve stem is rotatably connected to the bottom of the valve body. A valve plate is detachably connected between the upper and lower valve stems. An upper mounting bracket is fixedly connected to the outer top of the valve body, and a drive motor is fixedly connected to the top of the upper mounting bracket. A connecting mechanism is provided between the shaft of the drive motor and the top of the upper valve stem. The beneficial effect of this utility model is that by providing heat dissipation fins in the connecting mechanism, the contact area between the upper valve stem and the drive motor shaft can be reduced, thereby reducing the heat transfer efficiency between the upper valve stem and the drive motor and preventing the drive motor from having a reduced service life due to excessive temperature. Simultaneously, the heat dissipation fins increase the contact area between the upper and lower valve stems and the air, improving heat dissipation efficiency and thus enhancing the high-temperature resistance of the butterfly valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a high-temperature resistant intelligent butterfly valve. Background Technology

[0002] A butterfly valve is a type of valve that uses a rotating circular disc to open, close, and regulate the flow of media in a pipeline. It is widely used in industrial and civil applications. Butterfly valves offer significant advantages. First, they are compact, small in size, and lightweight, requiring minimal space during installation and reducing the overall load on the pipeline system, making them particularly suitable for space-constrained environments. Second, they open and close rapidly, requiring only a 90° rotation to go from fully open to fully closed, quickly cutting off or connecting the flow of media and improving production efficiency. Third, they have low fluid resistance and low energy loss, helping to reduce system operating costs. Furthermore, butterfly valves possess excellent flow regulation capabilities; by controlling the rotation angle of the disc, the flow rate of the media can be precisely adjusted to meet different process requirements. In terms of application areas, butterfly valves cover multiple industries including water treatment, heating, air conditioning, power, petrochemicals, and natural gas.

[0003] However, when existing butterfly valves are used in high-temperature environments, heat is easily conducted to the drive motor, affecting the motor's service life; moreover, existing butterfly valves have a low level of intelligence, making it inconvenient to accurately adjust the opening and closing angle of the valve plate. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor high-temperature resistance and low level of intelligence of existing butterfly valves.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-temperature resistant intelligent butterfly valve includes a valve body, an upper valve stem rotatably connected to the top of the valve body, a lower valve stem rotatably connected to the bottom of the valve body, a valve plate detachably connected between the upper and lower valve stems, an upper mounting bracket fixedly connected to the outer side of the top of the valve body, a drive motor fixedly connected to the top of the upper mounting bracket, a connecting mechanism provided between the shaft of the drive motor and the top end of the upper valve stem, the connecting mechanism including an upper connecting sleeve and a lower connecting sleeve, the upper connecting sleeve being fixedly connected to the shaft of the drive motor, the lower connecting sleeve being fixedly connected to the top end of the upper valve stem, a pair of flanges being fixedly connected to the outer walls of the opposite ends of the upper and lower connecting sleeves, and a plurality of bolt assemblies being evenly threaded around the axis of the upper connecting sleeve between the pair of flanges.

[0007] Furthermore, the upper valve stem, the lower valve stem, and the shaft of the drive motor are coaxially arranged, and several heat dissipation fins are fixedly connected to the outer side walls of the upper valve stem and the lower valve stem.

[0008] Furthermore, a lower mounting bracket is fixedly connected to the bottom outer side of the valve body, and an angle adjustment mechanism is provided at the bottom of the lower mounting bracket. The angle adjustment mechanism includes a sector plate, which is coaxially arranged with the lower valve stem, and a number of limiting holes are evenly opened along the edge of the sector plate.

[0009] Furthermore, an outer sleeve is fitted on the outer side of the bottom end of the lower valve stem, and a rotating rod is fixedly connected to the outer wall of the outer sleeve. A miniature electric cylinder is fixedly connected to the other end of the rotating rod facing the side of the fan-shaped plate. The diameter and position of the miniature electric cylinder match the limiting hole.

[0010] Furthermore, a pair of arc-shaped baffles are diagonally arranged around the valve stem on the inner sidewall of the valve body, and elastic sealing strips are fixedly connected to the opposing sidewalls of the arc-shaped baffles.

[0011] Furthermore, the sidewall of the valve plate is fixedly connected with several reinforcing ribs.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The present invention relates to a high-temperature resistant intelligent butterfly valve, which, by setting heat dissipation fins in the connecting mechanism, can reduce the contact area between the upper valve stem and the drive motor shaft, thereby reducing the heat transfer efficiency between the upper valve stem and the drive motor and preventing the drive motor from having a reduced service life due to excessive temperature. At the same time, the heat dissipation fins can increase the contact area between the upper and lower valve stems and the air, improve the heat dissipation efficiency, and thus improve the high-temperature resistance of the butterfly valve.

[0014] 2. The high-temperature resistant intelligent butterfly valve of this utility model, by setting an angle adjustment mechanism, can achieve precise limiting of the valve plate angle, thereby achieving precise adjustment of the fluid flow in the valve body and improving the intelligence level of the butterfly valve. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a high-temperature resistant intelligent butterfly valve according to this utility model.

[0016] Figure 2 This is a bottom view schematic diagram of the high-temperature resistant intelligent butterfly valve of this utility model.

[0017] Figure 3 This is a side view of a high-temperature resistant intelligent butterfly valve according to this utility model.

[0018] Figure 4 This is an enlarged schematic diagram of the structure at point A of a high-temperature resistant intelligent butterfly valve according to this utility model.

[0019] Figure 5 This is a schematic diagram of the reinforcing rib structure of a high-temperature resistant intelligent butterfly valve according to this utility model.

[0020] Figure 6 This is a cross-sectional structural diagram of a high-temperature resistant intelligent butterfly valve according to this utility model.

[0021] In the diagram: 1. Valve body; 2. Upper valve stem; 3. Lower valve stem; 4. Valve plate; 5. Lower mounting bracket; 6. Upper mounting bracket; 7. Drive motor; 8. Connecting mechanism; 801. Upper connecting sleeve; 802. Lower connecting sleeve; 803. Flange; 804. Bolt assembly; 9. Angle adjustment mechanism; 901. Sector plate; 902. Limiting hole; 903. Outer ring; 904. Rotating rod; 905. Miniature electric cylinder; 10. Heat dissipation fins; 11. Reinforcing rib; 12. Arc-shaped baffle; 13. Elastic sealing strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 and Figure 4This embodiment of a high-temperature resistant intelligent butterfly valve is characterized by: a valve body 1, an upper valve stem 2 rotatably connected to the top of the valve body 1, a lower valve stem 3 rotatably connected to the bottom of the valve body 1, a valve plate 4 detachably connected between the upper valve stem 2 and the lower valve stem 3, an upper mounting bracket 6 fixedly connected to the outer side of the top of the valve body 1, a drive motor 7 fixedly connected to the top of the upper mounting bracket 6, and a connecting mechanism 8 provided between the rotating shaft of the drive motor 7 and the top end of the upper valve stem 2 for connecting the rotating shaft of the drive motor 7 and the upper valve stem 2. The connecting mechanism 8 includes an upper connecting sleeve 80. 1. The upper connecting sleeve 801 is fixedly connected to the shaft of the drive motor 7, and the lower connecting sleeve 802 is fixedly connected to the top end of the upper valve stem 2. A pair of flanges 803 are fixedly connected to the outer walls of the opposite ends of the upper connecting sleeve 801 and the lower connecting sleeve 802. Several bolt assemblies 804 are evenly threaded around the axis of the upper connecting sleeve 801 between the pair of flanges 803. The upper valve stem 2, the lower valve stem 3 and the shaft of the drive motor 7 are coaxially arranged. Several heat dissipation fins 10 are fixedly connected to the outer walls of the upper valve stem 2 and the lower valve stem 3. When the butterfly valve is opened, the drive motor 7 drives the upper connecting sleeve 801 connected to it to start rotating. When the upper connecting sleeve 801 rotates, it drives the flange 803 and the bolt assembly 804 connecting the flange 803 to start rotating, causing the lower connecting sleeve 802 and the upper valve stem 2 to rotate accordingly. When the upper valve stem 2 rotates, it drives the valve plate 4 to start rotating, causing the high-temperature fluid in the valve body 1 to start flowing. By setting the bolt assembly 804, the contact area between the upper valve stem 2 and the shaft of the drive motor 7 can be reduced, thereby reducing the heat transfer efficiency between the upper valve stem 2 and the drive motor 7 and preventing the drive motor 7 from having a reduced service life due to excessive temperature. At the same time, the heat dissipation fins 10 can increase the contact area between the upper valve stem 2 and the lower valve stem 3 and the air, improve the heat dissipation efficiency, and thus improve the high temperature resistance of the butterfly valve.

[0024] Please see Figure 2-3A lower mounting bracket 5 is fixedly connected to the bottom outer side of the valve body 1. An angle adjustment mechanism 9 is provided at the bottom of the lower mounting bracket 5 to precisely limit the opening and closing angle of the valve plate 4. The angle adjustment mechanism 9 includes a sector plate 901, which is coaxially arranged with the lower valve rod 3. Several limiting holes 902 are evenly opened on the edge of the sector plate 901. An outer ring 903 is sleeved on the bottom outer side of the lower valve rod 3. A rotating rod 904 is fixedly connected to the outer wall of the outer ring 903. A miniature electric cylinder 905 is fixedly connected to the other end of the rotating rod 904 facing the sector plate 901. The diameter and position of the miniature electric cylinder 905 match the limiting holes 902. When the valve plate 4 rotates, it drives the lower valve rod 3 at its bottom to rotate as well. When the lower valve rod 3 rotates, it drives the outer ring 903 and the rotating rod 904 at its bottom end to rotate around the lower valve rod 3, causing the miniature electric cylinder 905 at the other end of the rotating rod 904 to move accordingly. When the valve plate 4 rotates to the required angle, the miniature electric cylinder 905 stops moving. At this time, the miniature electric cylinder 905 drives the piston rod to extend to the limiting hole 902 on the edge of the top fan-shaped plate 901, limiting and fixing the lower valve rod 3 and the valve plate 4, realizing the precise limiting of the angle of the valve plate 4, and thus realizing the precise adjustment of the fluid flow rate in the valve body 1.

[0025] Please see Figure 6 A pair of arc-shaped baffles 12 are diagonally arranged around the valve stem 2 on the inner side wall of the valve body 1. Elastic sealing strips 13 are fixedly connected to the opposing side walls of the arc-shaped baffles 12. When the butterfly valve is closed, the miniature electric cylinder 905 resets, and the drive motor 7 drives the valve plate 4 to reset until the two sides of the valve plate 4 abut against the elastic sealing strips 13 on the side walls of the arc-shaped baffles 12. The elastic sealing strips 13 ensure elastic contact between the valve plate 4 and the valve body 1, improving the sealing performance of the valve plate 4 when closed.

[0026] Please see Figure 5 The side wall of the valve plate 4 is fixedly connected with several reinforcing ribs 11. By setting the reinforcing ribs 11, the strength of the valve plate 4 can be improved, and the valve plate 4 can be prevented from deforming under the impact of fluid.

[0027] Working principle: When the butterfly valve is opened, the drive motor 7 drives the upper connecting sleeve 801 to rotate. The rotation of the upper connecting sleeve 801 causes the flange 803 and the bolt assembly 804 connecting the flange 803 to rotate, causing the lower connecting sleeve 802 and the upper valve stem 2 to rotate accordingly. The rotation of the upper valve stem 2 causes the valve plate 4 to rotate, allowing the high-temperature fluid inside the valve body 1 to flow. The bolt assembly 804 reduces the contact area between the upper valve stem 2 and the drive motor 7 shaft, thereby reducing the heat transfer efficiency between them and preventing the drive motor 7 from overheating and reducing its lifespan. Simultaneously, the heat dissipation fins 10 increase the contact area between the upper valve stem 2 and the lower valve stem 3 and the air, improving heat dissipation efficiency and thus enhancing the butterfly valve's high-temperature resistance. The rotation of the valve plate 4 drives the lower valve stem at its bottom. As the lower valve stem 3 rotates, the outer sleeve 903 and the rotating rod 904 at its bottom end begin to rotate around the lower valve stem 3, causing the miniature electric cylinder 905 at the other end of the rotating rod 904 to move accordingly. When the valve plate 4 rotates to the required angle, the miniature electric cylinder 905 stops moving. At this time, the miniature electric cylinder 905 drives the piston rod to extend to the limiting hole 902 on the edge of the top fan-shaped plate 901, limiting and fixing the lower valve stem 3 and the valve plate 4, realizing precise limiting of the angle of the valve plate 4, and thus realizing precise adjustment of the fluid flow rate in the valve body 1. When the butterfly valve is closed, the miniature electric cylinder 905 resets, and the drive motor 7 drives the valve plate 4 to reset until the two sides of the valve plate 4 abut against the elastic sealing strip 13 on the side wall of the arc-shaped baffle 12. The elastic sealing strip 13 can keep the valve plate 4 in elastic contact with the valve body 1, improving the sealing performance of the valve plate 4 when closed.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant intelligent butterfly valve, characterized in that: The valve includes a valve body (1), with an upper valve stem (2) rotatably connected to the top of the valve body (1) and a lower valve stem (3) rotatably connected to the bottom of the valve body (1). A valve plate (4) is detachably connected between the upper valve stem (2) and the lower valve stem (3). An upper mounting bracket (6) is fixedly connected to the outer side of the top of the valve body (1), and a drive motor (7) is fixedly connected to the top of the upper mounting bracket (6). A connecting mechanism (8) is provided between the shaft of the drive motor (7) and the top end of the upper valve stem (2). The mechanism (8) includes an upper connecting sleeve (801) and a lower connecting sleeve (802). The upper connecting sleeve (801) is fixedly connected to the shaft of the drive motor (7), and the lower connecting sleeve (802) is fixedly connected to the top end of the upper valve stem (2). A pair of flanges (803) are fixedly connected to the outer walls of the opposite ends of the upper connecting sleeve (801) and the lower connecting sleeve (802). A number of bolt assemblies (804) are evenly threaded around the axis of the upper connecting sleeve (801) between the pair of flanges (803).

2. The high-temperature resistant intelligent butterfly valve according to claim 1, characterized in that: The upper valve stem (2), the lower valve stem (3) and the drive motor (7) are coaxially arranged, and several heat dissipation fins (10) are fixedly connected to the outer side walls of the upper valve stem (2) and the lower valve stem (3).

3. The high-temperature resistant intelligent butterfly valve according to claim 1, characterized in that: The bottom outer side of the valve body (1) is fixedly connected to a lower mounting bracket (5). The bottom of the lower mounting bracket (5) is provided with an angle adjustment mechanism (9). The angle adjustment mechanism (9) includes a fan-shaped plate (901). The fan-shaped plate (901) is coaxially arranged with the lower valve stem (3). The edge of the fan-shaped plate (901) is evenly provided with several limiting holes (902).

4. The high-temperature resistant intelligent butterfly valve according to claim 3, characterized in that: The lower valve stem (3) is fitted with an outer sleeve (903) on the outer side of its bottom end. A rotating rod (904) is fixedly connected to the outer wall of the outer sleeve (903). A miniature electric cylinder (905) is fixedly connected to the other end of the rotating rod (904) facing the side of the fan-shaped plate (901). The diameter and position of the miniature electric cylinder (905) match the limiting hole (902).

5. The high-temperature resistant intelligent butterfly valve according to claim 1, characterized in that: The inner sidewall of the valve body (1) is provided with a pair of arc-shaped baffles (12) diagonally around the valve stem (2), and the opposing sidewalls of the arc-shaped baffles (12) are fixedly connected with elastic sealing strips (13).

6. The high-temperature resistant intelligent butterfly valve according to claim 1, characterized in that: The valve plate (4) has several reinforcing ribs (11) fixedly connected to its side wall.

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