Seawater corrosion resistant butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a seawater corrosion resistant butterfly valve which comprises a valve body, a protective shell is fixed on the valve body, the protective shell is rotatably connected with a worm, the worm is meshed with a worm gear, a rotating shaft is fixed on the worm gear, a valve clack is fixed on the rotating shaft, and the valve clack is in threaded connection with a bolt. A ceramic protective shell is arranged on one side of the valve clack, a threaded hole is formed in the ceramic protective shell, and the bolt is in threaded connection with the threaded hole. According to the seawater corrosion-resistant butterfly valve, the seawater corrosion speed of the valve clack can be effectively slowed down by additionally arranging the ceramic protective sleeve outside the valve clack, and the corrosion speed of the valve body is effectively slowed down by additionally arranging the stainless steel sleeve in the valve body, so that the seawater corrosion resistance of the butterfly valve is greatly improved; the sealing performance of the butterfly valve is improved, and the sealing performance is further improved through the sealing strip and the sealing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve resistant to seawater corrosion. Background Art

[0002] With the development of marine resources and the continuous advancement of marine engineering construction, valves are increasingly used in marine engineering, ships, seawater desalination and other fields.

[0003] However, traditional valves are often unable to withstand the corrosion of seawater and are prone to problems such as leakage and sticking, which seriously affect the service life and reliability of the valves. In addition, the sealing design of traditional butterfly valves is often not perfect, and is prone to problems such as leakage and sticking. Therefore, the market needs a butterfly valve that is resistant to seawater corrosion. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a seawater corrosion resistant butterfly valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a seawater corrosion-resistant butterfly valve, comprising a valve body, the valve body having an inherent protective shell, the protective shell being rotatably connected to a worm, the worm being meshed with a worm wheel, the worm wheel having an inherent rotating shaft, the rotating shaft having an inherent valve disc, the valve disc being threadedly connected to a bolt, a ceramic protective shell being provided on one side of the valve disc, the ceramic protective shell being provided with a threaded hole, and the bolt being threadedly connected to the threaded hole.

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

[0007] The valve body is provided with a through hole 1, and the through hole 1 is provided with a sealing ring.

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

[0009] The valve body has an inherent stainless steel sleeve, the stainless steel sleeve is provided with a second through hole, the second through hole is provided with a wear-resistant sleeve, the wear-resistant sleeve is slidably connected with a rotating outer ring, the rotating outer ring is slidably connected with a ball, and the ball is slidably connected with a rotating inner ring.

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

[0011] The rotating shaft is arranged inside the rotating inner ring, and the rotating shaft passes through the first through hole and the second through hole.

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

[0013] Sealing strips are arranged on both sides of the rotating shaft.

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

[0015] The inner side of the stainless steel sleeve is provided with a sealing sleeve, and the inner diameter of the sealing sleeve is the same as the outer diameter of the ceramic protective shell.

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

[0017] One side of the sealing sleeve is an inclined surface, and the other side of the sealing sleeve is a flat surface.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, a ceramic protective sleeve is added outside the valve disc to effectively slow down the speed at which the valve disc is corroded by seawater. Secondly, a stainless steel sleeve is added inside the valve body to effectively slow down the speed at which the valve body is corroded, thereby greatly improving the seawater corrosion resistance of the butterfly valve.

[0020] 2. In the utility model, the sealing performance of the butterfly valve is improved by matching the shapes of the ceramic protective sleeve and the sealing sleeve, and the sealing strip and the sealing ring further improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a seawater corrosion-resistant butterfly valve proposed by the utility model;

[0022] Figure 2 This is a partial structural schematic diagram of a seawater corrosion-resistant butterfly valve proposed by the utility model;

[0023] Figure 3 This is a top view of a seawater corrosion resistant butterfly valve proposed by the utility model;

[0024] Figure 4 This is a front view of a seawater corrosion resistant butterfly valve proposed by the utility model;

[0025] Figure 5 for Figure 3 A cross-sectional view along the cutting line AA;

[0026] Figure 6 for Figure 4 A cross-sectional view along the cutting line BB;

[0027] Figure 7 for Figure 5 Enlarged view of center C.

[0028] Legend:

[0029] 1. Valve body; 2. Protective shell; 3. Worm; 4. Worm wheel; 5. Rotating shaft; 6. Valve disc; 7. Ceramic protective shell; 8. Stainless steel sleeve; 9. Sealing sleeve; 10. Through hole 1; 11. Sealing ring; 12. Through hole 2; 13. Rotating outer ring; 14. Ball; 15. Rotating inner ring; 16. Wear-resistant sleeve; 17. Sealing strip; 18. Bolt; 19. Threaded hole; 20. Handwheel. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1-Figure 7 The utility model provides an embodiment: a seawater corrosion resistant butterfly valve, comprising a valve body 1, the valve body 1 having an inherent protective shell 2, the protective shell 2 being rotatably connected to a worm 3, the worm 3 being meshed with a worm wheel 4, the worm wheel 4 having an inherent rotating shaft 5, the rotating shaft 5 having an inherent valve flap 6, the valve flap 6 being threadedly connected to a bolt 18, a ceramic protective shell 7 being provided on one side of the valve flap 6, the ceramic protective shell 7 being provided with a threaded hole 19, the bolt 18 being threadedly connected to the threaded hole 19, by adding a layer of ceramic protective sleeve outside the valve flap 6, the speed at which the valve flap 6 is corroded by seawater can be effectively slowed down, and secondly, adding a layer of stainless steel sleeve 8 inside the valve body 1 also effectively slows down the speed at which the valve body 1 is corroded, thereby greatly improving the seawater corrosion resistance of the butterfly valve.

[0032] The valve body 1 is provided with a through hole 10, and a sealing ring 11 is provided on the through hole 10. The valve body 1 has an inherent stainless steel sleeve 8, and the stainless steel sleeve 8 is provided with a through hole 2 12, and the through hole 2 12 is provided with a wear-resistant sleeve 16. The wear-resistant sleeve 16 is slidably connected with a rotating outer ring 13, and the rotating outer ring 13 is slidably connected with a ball 14, and the ball 14 is slidably connected with a rotating inner ring 15. The rotating shaft 5 is arranged inside the rotating inner ring 15, and the rotating shaft 5 passes through the through hole 10 and the through hole 2 12. Sealing strips 17 are provided on both sides of the rotating shaft 5. There is an inherent sealing sleeve 9 on the inner side of the stainless steel sleeve 8, and the inner diameter of the sealing sleeve 9 is the same as the outer diameter of the ceramic protective shell 7. One side of the sealing sleeve 9 is an inclined surface, and the other side of the sealing sleeve 9 is a plane. The shape of the ceramic protective sleeve and the sealing sleeve 9 is matched, so that the sealing performance of the butterfly valve is improved, and the sealing strip 17 and the sealing ring 11 further improve the sealing performance.

[0033] Working principle: the user rotates the handwheel 20, the handwheel 20 drives the worm 3, the worm 3 drives the worm wheel 4, the worm wheel 4 drives the rotating shaft 5, the rotating shaft 5 drives the valve disc 6, the valve disc 6 drives the ceramic protective shell 7, and the ceramic protective shell 7 is rotated to fit with the sealing sleeve 9 to form a seal. At this time, the butterfly valve is closed, and the rotating inner ring 15 and the sealing ring 11 prevent the internal fluid from leaking through the through hole 10 and the through hole 2 12. In addition, the ceramic protective shell 7 is made of ceramic material and has strong corrosion resistance, thereby improving the seawater corrosion resistance of the butterfly valve.

[0034] 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 seawater corrosion resistant butterfly valve, comprising a valve body (1), characterized in that: The valve body (1) has an inherent protective shell (2), the protective shell (2) is rotatably connected to a worm (3), the worm (3) is meshed with a worm wheel (4), the worm wheel (4) has an inherent rotating shaft (5), the rotating shaft (5) has an inherent valve flap (6), the valve flap (6) is threadedly connected to a bolt (18), a ceramic protective shell (7) is provided on one side of the valve flap (6), the ceramic protective shell (7) is provided with a threaded hole (19), and the bolt (18) is threadedly connected to the threaded hole (19).

2. The seawater corrosion resistant butterfly valve according to claim 1, characterized in that: The valve body (1) is provided with a through hole (10), and the through hole (10) is provided with a sealing ring (11).

3. The seawater corrosion resistant butterfly valve according to claim 2, characterized in that: The valve body (1) has a stainless steel sleeve (8), the stainless steel sleeve (8) is provided with a second through hole (12), the second through hole (12) is provided with a wear-resistant sleeve (16), the wear-resistant sleeve (16) is slidably connected to a rotating outer ring (13), the rotating outer ring (13) is slidably connected to a ball (14), and the ball (14) is slidably connected to a rotating inner ring (15).

4. The seawater corrosion resistant butterfly valve according to claim 3 is characterized in that: The rotating shaft (5) is arranged inside the rotating inner ring (15), and the rotating shaft (5) passes through the first through hole (10) and the second through hole (12).

5. The seawater corrosion resistant butterfly valve according to claim 4, characterized in that: Sealing strips (17) are provided on both sides of the rotating shaft (5).

6. The seawater corrosion resistant butterfly valve according to claim 5, characterized in that: A sealing sleeve (9) is provided inside the stainless steel sleeve (8), and the inner diameter of the sealing sleeve (9) is the same as the outer diameter of the ceramic protective shell (7).

7. The seawater corrosion resistant butterfly valve according to claim 6, characterized in that: One side of the sealing sleeve (9) is an inclined surface, and the other side of the sealing sleeve (9) is a flat surface.

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