Fluoroplastic lining butterfly valve

Abstract

The utility model discloses a butterfly valve with a fluoroplastic lining, and relates to the technical field of valves, a lining is I-shaped, and flange surfaces on two sides of the lining are matched with two side surfaces of a whole formed by an upper valve body and a lower valve body; the butterfly plate is arranged in an integral inner cavity formed by the upper valve body and the lower valve body, a transmission shaft at the upper end of the butterfly plate penetrates through a penetrating type long hole in the upper valve body and then is connected with a driving device, a fixing shaft at the lower end of the butterfly plate is installed in a non-penetrating type long hole in the lower valve body, and the penetrating type long hole and the non-penetrating type long hole are coaxially arranged. An upper notch is integrally formed in the penetrating type long hole, a lower notch is integrally formed in the non-penetrating type long hole, and belleville springs, adjusting pads and sealing rings are sequentially arranged in the upper notch and the lower notch from the circumference to the circle center. The valve is mainly applied to a chemical pipeline with high corrosivity and used for closing or opening a pipeline medium and keeping the normal operation of a system. The utility model has the advantages of compact structure, reliable performance, tight sealing, convenient disassembly and the like.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a fluoroplastic-lined butterfly valve. Background Technology

[0002] Currently, fluoroplastic-lined butterfly valves used in highly corrosive pipelines for chemical applications suffer from unstable performance, are prone to leakage, and have a short service life. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a fluoroplastic-lined butterfly valve, which is mainly used in chemical pipelines with strong corrosiveness to close or open the pipeline medium and maintain the normal operation of the system; it has the advantages of compact structure, reliable performance, tight sealing and convenient disassembly.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: It comprises a lower valve body, a butterfly plate, and an upper valve body; the upper and lower valve bodies are symmetrically fastened together and fixed with bolts; the inner ring wall of the integral formed by the upper and lower valve bodies has a groove, and an elastic gasket is provided in the groove; the bushing is I-shaped, and its two flange faces mate with the two sides of the integral formed by the upper and lower valve bodies, and the elastic gasket is placed on the outside of the mating surface between the bushing and the integral; the butterfly plate is set in the internal cavity of the integral formed by the upper and lower valve bodies, the drive shaft at the upper end of the butterfly plate passes through the through-hole in the upper valve body and is connected to the drive device, and the fixing shaft at the lower end of the butterfly plate is installed in the non-through-hole in the lower valve body, the through-hole and non-through-hole are coaxially arranged; the through-hole has an integrally formed upper recess, and the non-through-hole has an integrally formed lower recess, and a butterfly spring, an adjusting pad, and a sealing ring are sequentially provided from the circumference to the center in both the upper and lower recesses.

[0005] Preferably, the bushing has a boss integrally formed at the contact surface with the drive shaft at the upper end and the fixed shaft at the lower end of the disc.

[0006] Preferably, the butterfly plate is integrally formed with reinforcing bosses at the connection points of its upper drive shaft and lower fixed shaft.

[0007] Preferably, a flange is integrally formed at the top of the through-hole at the upper end of the upper valve body, and a mounting hole is provided on the flange, which is connected to the body of the drive device.

[0008] Preferably, a number of upper lugs are provided between the outer wall of the upper valve body and the bottom of the flange thereon, and upper lug holes are provided in the upper lugs.

[0009] Preferably, a number of lower ear ribs are provided between the outer wall of the lower valve body and its lower end, and lower ear ribs are provided with lower ear holes.

[0010] Preferably, the bottom outer wall of the upper valve body is integrally formed with an upper lug, and the upper outer wall of the lower valve body is integrally formed with a lower lug, and the upper lug and the lower lug are connected by bolts.

[0011] Preferably, the contact surface between the adjusting pad and the sealing ring is provided with a 45° inclined surface.

[0012] Preferably, a keyway is provided on the drive shaft of the butterfly plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a fluoroplastic-lined butterfly valve, which is mainly used in chemical pipelines with strong corrosiveness to close or open the pipeline medium and maintain the normal operation of the system; it has the advantages of compact structure, reliable performance, tight sealing and convenient disassembly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a side view of the bushing in this utility model.

[0016] Figure 3 This is the front view of the bushing in this utility model.

[0017] Figure 4 This is a schematic diagram of the butterfly plate in this utility model.

[0018] Figure 5 yes Figure 4 The left view.

[0019] Figure 6 yes Figure 4 Top view.

[0020] Figure 7 This is a schematic diagram of the upper valve body in this utility model.

[0021] Figure 8 yes Figure 7 The left view.

[0022] Figure 9 yes Figure 7 Top view.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Lower valve body, 2. Butterfly plate, 3. Butterfly spring, 4. Adjusting shim, 5. Sealing ring, 6. Bolt, 7. Upper valve body, 8. Bushing, 9. Elastic gasket, 10. Boss, 11. Upper lug, 12. Lower lug, 13. Upper ear hole, 14. Lower ear hole, 15. Upper recess, 16. Lower recess, 17. Reinforcing boss, 18. Keyway. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figures 1-9 As shown, this specific embodiment adopts the following technical solution: It includes a lower valve body 1, a butterfly plate 2, and an upper valve body 7; the upper valve body 7 and the lower valve body 1 are symmetrically fastened together and fixed with bolts 6; the inner ring wall of the integral formed by the upper valve body 7 and the lower valve body 1 is provided with a groove, and an elastic gasket 9 is provided in the groove; the bushing 8 is I-shaped, and its two side flanges mate with the two sides of the integral formed by the upper valve body 7 and the lower valve body 1, and the elastic gasket 9 is placed on the outside of the mating surface between the bushing 8 and the integral, ensuring that the butterfly plate 2 can tightly fit with the bushing 8 when closed, thus ensuring the sealing performance of the valve; the butterfly plate 2 is set at... Within the integral internal cavity formed by the upper valve body 7 and the lower valve body 1, the drive shaft at the upper end of the butterfly plate 2 passes through a through-hole in the upper valve body 7 and connects to the drive device (a keyway 18 is provided on the drive shaft of the butterfly plate 2, which is connected to the drive device via a drive key). The fixed shaft at the lower end of the butterfly plate 2 is installed in a non-through-hole in the lower valve body 1. The through-hole and non-through-hole are coaxially arranged. The bushing 8 has integrally formed bosses 10 at the contact surfaces with the drive shaft at the upper end and the fixed shaft at the lower end of the butterfly plate 2, ensuring the sealing of the bushing 8 and the butterfly plate 2. The fixed-axis connection is integrally formed with a reinforcing boss 17 to ensure the strength of the butterfly plate 2; the through-hole has an integrally formed upper recess 15, and the non-through-hole has an integrally formed lower recess 16. Both the upper and lower recesses 15 and 16 are sequentially provided with a butterfly spring 3, an adjusting pad 4, and a sealing ring 5 from the circumference to the center. The contact surface between the adjusting pad 4 and the sealing ring 5 is set at a 45° angle. The butterfly spring 3 presses the sealing ring 5 through the adjusting pad 4. The 45° angled surface ensures that the butterfly spring 3 has the compression to press the sealing ring 5, thus ensuring the valve's sealing performance at this location; the upper end of the upper valve body 7 is located at... A flange is integrally formed at the top of the through-hole, and the flange has a mounting hole. The flange is connected to the body of the drive unit. Several upper lugs are provided between the outer wall of the upper valve body 7 and the bottom of the flange. The upper lugs have upper lug holes 13. Several lower lugs are provided between the outer wall of the lower valve body 1 and its lower end. The lower lugs have lower lug holes 14. The upper lug holes 13 and lower lug holes 14 are used for the butterfly valve to be connected and positioned with the pipe flange. An upper lug 11 is integrally formed on the bottom outer wall of the upper valve body 7, and a lower lug 12 is integrally formed on the upper outer wall of the lower valve body 1. Bolts 6 connect the upper lug 11 and the lower lug 12.

[0027] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a fluoroplastic-lined butterfly valve, which is mainly used in chemical pipelines with strong corrosiveness to close or open the pipeline medium and maintain the normal operation of the system; it has the advantages of compact structure, reliable performance, tight sealing and convenient disassembly.

[0028] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fluoroplastic-lined butterfly valve, characterized in that: It comprises a lower valve body (1), a butterfly plate (2), and an upper valve body (7); the upper valve body (7) and the lower valve body (1) are symmetrically fastened together and fixed with bolts (6); the inner ring wall of the integral formed by the upper valve body (7) and the lower valve body (1) is provided with a groove, and an elastic gasket (9) is provided in the groove; the bushing (8) is I-shaped, and its two flange faces mate with the two sides of the integral formed by the upper valve body (7) and the lower valve body (1), and the elastic gasket (9) is placed on the outside of the mating surface between the bushing (8) and the integral; the butterfly plate (2) is set in the integral formed by the upper valve body (7) and the lower valve body (1). In the internal cavity of the body (1), the drive shaft at the upper end of the butterfly plate (2) passes through the through-hole in the upper valve body (7) and is connected to the drive device. The fixed shaft at the lower end of the butterfly plate (2) is installed in the non-through-hole in the lower valve body (1). The through-hole and non-through-hole are coaxially arranged. The through-hole has an integrally formed upper recess (15), and the non-through-hole has an integrally formed lower recess (16). The upper recess (15) and the lower recess (16) are provided with a butterfly spring (3), an adjusting pad (4) and a sealing ring (5) from the circumference to the center in sequence.

2. The fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The bushing (8) and the upper drive shaft and lower fixed shaft of the butterfly plate (2) are integrally formed with bosses (10).

3. The fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The butterfly plate (2) is integrally formed with a reinforcing boss (17) at the connection between its upper drive shaft and lower fixed shaft.

4. The fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The upper valve body (7) has an integrally formed flange at the top of the through-hole, and the flange has an installation hole. The flange is connected to the body of the drive device.

5. A fluoroplastic-lined butterfly valve according to claim 1, characterized in that: Several upper ear ribs are provided between the outer wall of the upper valve body (7) and the bottom of the flange on it, and upper ear holes (13) are provided in the upper ear ribs.

6. A fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The lower valve body (1) has several lower ear ribs between its outer wall and its lower end, and the lower ear ribs have lower ear holes (14).

7. A fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The upper valve body (7) has an integrally formed upper lug (11) on the bottom outer wall, and the lower valve body (1) has an integrally formed lower lug (12) on the upper outer wall. Bolts (6) connect the upper lug (11) and the lower lug (12).

8. A fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The contact surface between the adjusting pad (4) and the sealing ring (5) is provided with a 45° inclined surface.

9. A fluoroplastic-lined butterfly valve according to claim 1, characterized in that: The butterfly plate (2) has a keyway (18) on its drive shaft.

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