High-temperature-resistant and anti-corrosion metal hard sealing butterfly valve

Abstract

The utility model discloses a high temperature resistant and corrosion resistant metal hard sealing butterfly valve which comprises a valve body shell, a base penetrates through the middle of the bottom of the valve body shell and is fixedly connected with the middle of the bottom of the valve body shell, flange plates are fixedly connected to the front end and the rear end of the valve body shell, and evenly distributed threaded holes penetrate through the front sides of the flange plates. The adjacent sides of the flange plates penetrate through and are fixedly connected with evenly-distributed heat dissipation rods. According to the utility model, after the sealing air bag is inflated, the gap between the groove and the butterfly valve plate is filled with the increased circle of the butterfly valve plate, so that the sealing performance between the butterfly valve plate and the groove is improved, and the friction force between devices is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hard-sealed butterfly valves, in particular to a high-temperature resistant and corrosion-resistant metal hard-sealed butterfly valve. Background Art

[0002] Metal hard seal butterfly valve is a valve commonly used in industrial pipeline systems. It is usually made of metal materials (such as stainless steel, titanium alloy, etc.) and has excellent sealing performance and high temperature and corrosion resistance. They are suitable for pipeline systems with high pressure, high temperature, high flow rate and highly corrosive media, and are commonly found in chemical, petroleum, natural gas and other fields.

[0003] At present, when the hard-sealed butterfly valves on the market are working, the valve disc in the closed state is easily affected by the fluid pressure and tilted, causing gas or fluid leakage. During the use of metal hard-sealed butterfly valves, the built-in hard metal materials are damaged by long-term friction with each other, which reduces the sealing of the valve and causes valve body leakage. For this reason, we propose metal hard-sealed butterfly valves. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a high temperature resistant and corrosion resistant metal hard seal butterfly valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-temperature resistant and corrosion-resistant metal hard-sealed butterfly valve, comprising a valve body shell, a base passing through the middle of the bottom of the valve body shell and fixedly connected, flanges are fixedly connected at both front and rear ends of the valve body shell, the front side of the flange passes through and is provided with evenly distributed threaded holes, the adjacent sides of the flange pass through and are fixedly connected with evenly distributed heat dissipation rods, an alloy layer passes through and is fixedly connected to the inner wall of the valve body shell, connecting rings are fixedly connected to the front and rear ends of the alloy layer, a fixing tube passes through and is fixedly connected to the top of the outer wall of the valve body shell, a sealing ring is fixedly connected to the bottom of the outer wall of the fixing tube, and the bottom of the sealing ring is fixedly connected to the valve body shell, a self-locking rod passes through and is provided on the right side of the valve body shell, and a sealing mechanism is provided on the inner wall of the alloy layer.

[0006] As a further description of the above technical solution:

[0007] The sealing mechanism comprises a sealing airbag, which is fixedly connected to the alloy layer. A groove is penetrated and arranged at the middle position of the alloy layer, and the groove is penetrated and fixedly connected to the sealing airbag.

[0008] As a further description of the above technical solution:

[0009] A valve stem is rotatably connected to the middle position of the inner wall of the sealing airbag, and a butterfly valve piece is penetrated and fixedly connected to the outer ring of the valve stem.

[0010] As a further description of the above technical solution:

[0011] The front side of the valve stem is penetrated and fixedly connected with evenly distributed connecting rings, and the valve body shell is fixedly connected to the butterfly valve plate.

[0012] As a further description of the above technical solution:

[0013] A sealing ring is arranged on the outer wall of the front end of the connecting ring, and a fixing bolt penetrates through and is threadedly connected to the right side of the top of the sealing ring.

[0014] As a further description of the above technical solution:

[0015] A sealing disk is passed through and fixedly connected to the top of the fixed tube, and a ventilation pipe is passed through and fixedly connected to the top of the sealing disk.

[0016] As a further description of the above technical solution:

[0017] The top of the ventilation pipe passes through and is fixedly connected with a valve seat, and the front end of the outer wall of the valve seat passes through and is fixedly connected with a pipe rack.

[0018] As a further description of the above technical solution:

[0019] A hand wheel is passed through and rotatably connected to the right side of the pipe rack.

[0020] The utility model has the following beneficial effects:

[0021] In the utility model, firstly, after the sealing airbag is inflated, a circle of the butterfly valve plate is enlarged and expanded to fill the gap between the groove and the butterfly valve plate, thereby increasing the sealing between the butterfly valve plate and the groove, effectively avoiding long-term friction damage between the hard metal materials built into the device, which is beneficial to reducing the contact friction of the hard metal built into the device and improving the service life of the device. A sealing ring is fixedly connected to the bottom of the fixed tube, which penetrates and is fixedly connected to the sealing disk at the top of the fixed tube to prevent liquid or gas from overflowing, thereby effectively reducing the leakage of gas or liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main three-dimensional structure of a high-temperature resistant and corrosion-resistant metal hard-sealed butterfly valve proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the side view of a high temperature resistant and corrosion resistant metal hard seal butterfly valve proposed by the utility model;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of the alloy layer of a high-temperature resistant and corrosion-resistant metal hard-sealed butterfly valve proposed in the utility model

[0025] Figure 4 The utility model is a rear view stereoscopic structural schematic diagram of a high temperature resistant and corrosion resistant metal hard seal butterfly valve.

[0026] Legend:

[0027] 1. Flange; 2. Valve body shell; 3. Heat dissipation rod; 4. Fixed pipe; 5. Sealing plate; 6. Valve seat; 7. Pipe rack; 8. Ventilation pipe; 9. Handwheel; 10. Base; 11. Fixing bolt; 12. Alloy layer; 13. Sealing ring; 14. Sealing ring; 15. Connecting ring; 16. Threaded hole; 17. Groove; 18. Sealing airbag; 19. Valve stem; 20. Connecting ring; 21. Butterfly valve plate; 22. Self-locking rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Reference Figure 1-3The utility model provides an embodiment: a high temperature resistant and corrosion resistant metal hard seal butterfly valve, including a valve body shell 2, a base 10 is penetrated and fixedly connected in the middle of the bottom of the valve body shell 2, a flange 1 is fixedly connected at both the front and rear ends of the valve body shell 2, the front side of the flange 1 is penetrated and provided with evenly distributed threaded holes 16, and the adjacent sides of the flange 1 are penetrated and fixedly connected with evenly distributed heat dissipation rods 3, and the inner wall of the valve body shell 2 is penetrated and fixedly connected with an alloy layer 12, the alloy layer 12 is made of corrosion-resistant metal and can be used in a variety of environments, including high temperature, high pressure and acid-base environments, the groove 17 in the alloy layer 12 is fixedly connected with a sealing airbag 18, after the sealing airbag 18 is fixed to the inner wall of the alloy layer 12, the valve stem 19 is penetrated with the alloy layer 12, and the front and rear ends of the alloy layer 12 are fixedly connected with connecting rods 3. A connecting ring 15 and a fixing pipe 4 are passed through and fixedly connected to the top of the outer wall of the valve body shell 2. When the butterfly valve needs to be opened, the fixing pipe 4 connected to the top of the valve body shell 2 is rotated. A sealing ring 14 is fixedly connected to the bottom of the fixing pipe 4 to prevent liquid or gas from overflowing, effectively reducing the leakage of gas or liquid. A sealing ring 14 is fixedly connected to the bottom of the outer wall of the fixing pipe 4, and the bottom of the sealing ring 14 is fixedly connected to the valve body shell 2. The sealing ring 14 is fixedly connected to the valve body shell 2 to increase the sealing between the groove 17 and the butterfly valve piece 21. The butterfly valve piece 21 fixedly connected between the connecting ring 20 fixedly connected to the valve stem 19 rotates with the valve stem 19 and rotates within the entire butterfly valve, so that the butterfly valve can be opened. A self-locking rod 22 is passed through and arranged on the right side of the valve body shell 2, and a sealing mechanism is arranged on the inner wall of the alloy layer 12.

[0031] The sealing mechanism includes a sealing airbag 18, which is fixedly connected to the alloy layer 12. A groove 17 is penetrated and provided in the middle position of the alloy layer 12. The groove 17 and the sealing airbag 18 are penetrated and fixedly connected. A valve stem 19 is rotatably connected to the middle position of the inner wall of the sealing airbag 18. The hand wheel 9 is rotated, and the hand wheel 9 is rotated in the alloy layer 12 to the inner wall of the sealing airbag 18. The sealing airbag 18 connected in the groove 17 is inflated and self-locked through the self-locking rod 22 on one side of the valve body shell 2. The valve stem 19 is rotatably connected to the inner wall of the alloy layer 12. The outer ring of the valve stem 19 is penetrated and fixedly connected with a butterfly valve plate 21. The front side of the valve stem 19 is penetrated and fixedly connected with a uniformly distributed connecting ring 20, and between the valve body shell 2 and the butterfly valve plate 21 Fixed connection, after the sealing airbag 18 is inflated, a circle of the butterfly valve plate 21 is enlarged and expanded to fill the gap between the groove 17 and the butterfly valve plate 21, thereby increasing the sealing between the groove 17 and the butterfly valve plate 21. A sealing ring 13 is provided on the outer wall at the front end of the connecting ring 15, and a fixing bolt 11 is penetrated through and threadedly connected to the right side of the top of the sealing ring 13, and a sealing disk 5 is penetrated through and fixedly connected to the top of the fixing pipe 4, and a vent pipe 8 is penetrated through and fixedly connected to the top of the sealing disk 5, and a valve seat 6 is penetrated through and fixedly connected to the top of the vent pipe 8, and a pipe rack 7 is penetrated through and fixedly connected to the front end of the outer wall of the valve seat 6, and a hand wheel 9 is penetrated through and rotatably connected to the right side of the pipe rack 7. When the hand wheel 9 is turned, the hand wheel 9 rotates in the alloy layer 12 to rotate the butterfly valve plate 21 to facilitate the circulation of gas or liquid.

[0032] Working principle: The groove 17 in the alloy layer 12 is fixedly connected with a sealing airbag 18. After the sealing airbag 18 is fixed to the inner wall of the alloy layer 12, the valve stem 19 penetrates the alloy layer 12 so that the valve stem 19 is rotatably connected to the inner wall of the alloy layer 12. When the butterfly valve needs to be opened, the fixed tube 4 connected to the top of the valve body shell 2 is rotated. The bottom of the fixed tube 4 is fixedly connected with a sealing ring 14, which penetrates and is fixedly connected to the sealing disk 5 on the top of the fixed tube 4 to prevent liquid or gas from overflowing and effectively reduce the leakage of gas or liquid. A valve seat 6 is provided on the top of the fixed tube 4. Two gears are provided in the valve seat 6. The connected valve stem 19 is rotated by rotating the pipe rack 7. The butterfly valve piece 21 fixedly connected between the connecting ring 20 to which the valve stem 19 is fixedly connected rotates with the valve stem 19 and rotates within the entire butterfly valve, so that the butterfly valve can be opened. The valve is opened to transport the liquid or gas in the pipeline. After the transportation is completed, the hand wheel 9 is turned again. The hand wheel 9 rotates in the alloy layer 12 to the inner wall of the sealing air bag 18, and the sealing air bag 18 connected in the groove 17 is inflated and self-locked through the self-locking rod 22 on one side of the valve body shell 2, and the alloy layer 12 and the butterfly valve plate 21 are sealed. After the sealing air bag 18 is inflated, a circle of the butterfly valve plate 21 is enlarged and expanded to fill the gap between the groove 17 and the butterfly valve plate 21, thereby increasing the sealing between the groove 17 and the butterfly valve plate 21, effectively avoiding the long-term friction damage of the hard metal materials built into the device, which is beneficial to reducing the contact friction of the hard metal built into the device and improving the service life of the device. The alloy layer 12 is composed of corrosion-resistant metal and can be used in a variety of environments, including high temperature, high pressure and acid-base environments.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature resistant and corrosion resistant metal hard seal butterfly valve, comprising a valve body shell (2), characterized in that: A base (10) is passed through and fixedly connected to the middle of the bottom of the valve body shell (2); flanges (1) are fixedly connected to the front and rear ends of the valve body shell (2); the front side of the flange (1) is passed through and provided with evenly distributed threaded holes (16); the adjacent side of the flange (1) is passed through and fixedly connected with evenly distributed heat dissipation rods (3); the inner wall of the valve body shell (2) is passed through and fixedly connected with an alloy layer (12); the front and rear ends of the alloy layer (12) are fixedly connected with connecting rings (15); the top of the outer wall of the valve body shell (2) is passed through and fixedly connected with a fixing pipe (4); the bottom of the outer wall of the fixing pipe (4) is fixedly connected with a sealing ring (14), and the bottom of the sealing ring (14) is fixedly connected to the valve body shell (2); a self-locking rod (22) is passed through and provided on the right side of the valve body shell (2); and a sealing mechanism is provided on the inner wall of the alloy layer (12).

2. A high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 1, characterized in that: The sealing mechanism comprises a sealing airbag (18), wherein the sealing airbag (18) is fixedly connected to the alloy layer (12), a groove (17) is provided through the middle of the alloy layer (12), and the groove (17) and the sealing airbag (18) are penetrated and fixedly connected.

3. A high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 2, characterized in that: A valve stem (19) is rotatably connected to the middle position of the inner wall of the sealing airbag (18), and a butterfly valve plate (21) is penetrated and fixedly connected to the outer ring of the valve stem (19).

4. A high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 3, characterized in that: The front side of the valve stem (19) is penetrated by and fixedly connected with evenly distributed connecting collars (20), and the valve body shell (2) is fixedly connected to the butterfly valve plate (21).

5. The high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 1, characterized in that: A sealing ring (13) is provided on the front end outer wall of the connecting ring (15), and a fixing bolt (11) penetrates through and is threadedly connected to the right side of the top of the sealing ring (13).

6. The high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 1, characterized in that: A sealing disc (5) passes through and is fixedly connected to the top of the fixed tube (4), and a ventilation tube (8) passes through and is fixedly connected to the top of the sealing disc (5).

7. A high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 6, characterized in that: The top of the ventilation pipe (8) passes through and is fixedly connected to a valve seat (6), and the front end of the outer wall of the valve seat (6) passes through and is fixedly connected to a pipe rack (7).

8. The high temperature resistant and corrosion resistant metal hard seal butterfly valve according to claim 7, characterized in that: A hand wheel (9) passes through and is rotatably connected to the right side of the pipe rack (7).

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