Seawater-resistant butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a seawater-resistant butterfly valve which comprises a valve body, a valve rod, a connecting pipe and two scrapers, according to the seawater-resistant butterfly valve, the connecting pipe is arranged in a mechanism cavity of a valve plate, a first bevel gear is arranged at the bottom end of the connecting pipe, the scrapers are symmetrically arranged on the two sides of the valve plate, and connecting columns are connected to the scrapers; and a first bevel gear is arranged at one end of the connecting column, a second bevel gear meshed with the first bevel gear is arranged at one end of the connecting column, and when the valve rod drives the valve plate to rotate, scale on the surface of the valve plate can be cleaned through the scraping plate through meshing fit of the first bevel gear and the second bevel gear.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely is a kind of sea water resistant butterfly valve. BACKGROUND

[0002] Butterfly valve is also called flap valve, it is a kind of simple structure regulating valve, it can be used for low pressure pipeline medium switch control butterfly valve is that the closing piece (valve clapper or butterfly plate) is disc, rotates around valve shaft to reach the opening and closing of a kind of valve, valve can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and so on various types fluid flow, mainly plays cut-off and throttling role on pipeline, butterfly valve actuator is a disc-shaped butterfly plate, rotates in the valve body around its own axis, to achieve the purpose of opening and closing or adjusting.

[0003] At present, some butterfly valves used in seawater, seawater flows in pipeline, because the seawater contains a large amount of soluble salt, which is mainly composed of sodium chloride and sulfate, and a certain amount of soluble carbonate, during the long-term use of butterfly valve, the salt in seawater has strong fouling property, which is easy to cause the fouling on the surface of valve plate of butterfly valve, and long-term accumulation can easily cause the obstruction of valve plate opening and closing.

[0004] Therefore, we propose a sea water resistant butterfly valve to solve the above problems. INVENTION CONTENTS

[0005] The utility model discloses a sea water resistant butterfly valve, which can solve the problem of fouling on the surface of valve plate of butterfly valve caused by the large amount of soluble salt in seawater.

[0006] To achieve the above object, the utility model adopts the following technical scheme: a sea water resistant butterfly valve, comprising: a valve body, an electric actuator is arranged outside the valve body, a valve plate is arranged in the valve body, a mechanism cavity is formed in the valve plate;

[0007] A connecting pipe is arranged in the mechanism cavity, and a first bevel gear is arranged at the bottom end of the connecting pipe.

[0008] Two scrapers are symmetrically arranged on both sides of the valve plate, a connecting column is connected to the scraper, a second bevel gear is arranged at one end of the connecting column, and the second bevel gear is engaged with the first bevel gear.

[0009] A valve rod is arranged in the mechanism cavity, one end of the valve rod is connected to the bottom wall in the mechanism cavity, the other end of the valve rod is connected to the electric actuator, and the connecting pipe is sleeved on the surface of the valve rod.

[0010] Further, the valve plate is provided with a sealing rubber ring.

[0011] Further, the two sides of the scraper are symmetrically provided with chamfered structures.

[0012] Further, the valve body is provided with a pressing cover.

[0013] Further, the pressing cover is provided with a support, and the electric actuator is installed on the support.

[0014] Further, a sealing gasket is arranged between the pressing cover and the valve body.

[0015] Further, the valve rod comprises a first rod body connected with a connecting pipe fixing sleeve, a second rod body arranged at the bottom end of the first rod body, a limiting column connected with the bottom end of the first rod body, a limiting slot arranged at the top end of the second rod body and slidably connected with the limiting column, and a bottom wall of the mechanism cavity fixedly connected with the bottom end of the second rod body.

[0016] The valve plate is provided with a connecting pipe in the mechanism cavity, a first bevel gear is arranged at the bottom end of the connecting pipe, a scraper is symmetrically arranged at the two sides of the valve plate, a connecting column is connected with the scraper, a second bevel gear meshing with the first bevel gear is arranged at one end of the connecting column, and the valve plate is driven to rotate by the valve rod. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the seawater-resistant butterfly valve of the utility model;

[0018] Figure 2 is a sectional structure schematic view of the seawater-resistant butterfly valve of the utility model;

[0019] Figure 3 is a local structure A enlarged schematic view of the utility model Figure 2 ;

[0020] Figure 4 is a second rod body structure schematic view of the seawater-resistant butterfly valve of the utility model.

[0021] Corresponding names of various marks in the drawing:

[0022] 1, valve body; 2, electric actuator; 3, valve plate; 31, mechanism cavity; 4, connecting pipe; 5, first bevel gear; 6, scraper; 7, connecting column; 8, second bevel gear; 9, valve rod; 91, first rod body; 92, second rod body; 921, limiting groove; 93, limiting column; 10, sealing rubber ring; 11, pressing cover; 12, support; 13, sealing gasket; 14, first sealing bearing; 15, second sealing bearing. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art belong to the protection scope of the utility model.

[0024] Embodiments of the utility model:

[0025] As shown in Figures 1-3 The utility model provides a sea water resistant butterfly valve, including valve body 1, valve rod 9, connecting pipe 4 to two scraper 6, valve body 1 outside is provided with electric actuator 2, and valve body 1 is provided with valve plate 3, and valve body 1 is provided with pressing cover 11, pressing cover 11 is provided with support 12, electric actuator 2 is installed on support 12, mechanism cavity 31 is seted up in valve plate 3, valve rod 9 is seted up in mechanism cavity 31, one end of valve rod 9 is connected with the bottom wall in mechanism cavity 31, and the other end of valve rod 9 is connected with electric actuator 2, drives valve rod 9 to rotate through electric actuator 2, to drive valve plate 3 to rotate;

[0026] As shown in Figures 1-4As shown, the connecting pipe 4 is arranged in the mechanism cavity 31, the bottom end of the connecting pipe 4 is provided with the first bevel gear 5, the connecting pipe 4 is sleeved on the surface of the valve rod 9, the valve rod 9 comprises the first rod body 91 which is fixedly sleeved with the connecting pipe 4, the bottom end of the first rod body 91 is provided with the second rod body 92, and the bottom end of the first rod body 91 is connected with the limiting column 93, the top end of the second rod body 92 is provided with the limiting groove 921 which is slidably connected with the limiting column 93, and the bottom end of the second rod body 92 is fixedly connected with the bottom wall in the mechanism cavity 31, the two scrapers 6 are symmetrically arranged on both sides of the valve plate 3, the scraper 6 is connected with the connecting column 7, one end of the connecting column 7 is provided with the second bevel gear 8, the second bevel gear 8 is engaged with the first bevel gear 5, when the valve rod 9 is driven to rotate by the electric actuator 2, the first rod body 91 will first rotate, driving the connecting pipe 4 and the first bevel gear 5 to rotate, under the engagement of the first bevel gear 5 and the second bevel gear 8, the connecting column 7 and the scraper 6 are driven to rotate, thereby cleaning the scale on the surface of the valve plate 3, when the limiting column 93 moves to the limit position in the limiting groove 921, the second rod body 92 is driven to rotate, driving the valve plate 3 to open or close;

[0027] As shown in the figure, Figures 1-2 The sealing rubber ring 10 is arranged on the valve plate 3, which ensures the sealing property when the valve plate 3 is closed.

[0028] As shown in the figure, Figures 1-3 The two sides of the scraper 6 are symmetrically arranged as the chamfer structure, which facilitates the cleaning of the scale.

[0029] As shown in the figure, Figures 1-2 The sealing gasket 13 is arranged between the pressure sealing cover 11 and the valve body 1, which further improves the sealing property.

[0030] As shown in the figure, Figures 1-3 The first sealing bearing 14 which is matched with the connecting column 7 is arranged on the valve plate 3, and the second sealing bearing 15 which is matched with the connecting pipe 4 is arranged in the mechanism cavity 31, which facilitates the rotation.

[0031] Specifically, when the electric actuator 2 drives the valve rod 9 to rotate, the first rod body 91 will first rotate, driving the connecting pipe 4 and the first bevel gear 5 to rotate, and the limiting column 93 moves in the limiting groove 921, under the engagement of the first bevel gear 5 and the second bevel gear 8, the connecting column 7 drives the scraper 6 to rotate, thereby cleaning the scale on the surface of the valve plate 3, and when the limiting column 93 moves to the limit position in the limiting groove 921, the second rod body 92 is driven to rotate, driving the valve plate 3 to rotate.

Claims

1. A sea water resistant butterfly valve, characterized in that Include: Valve body (1), the outer side of the valve body (1) is provided with an electric actuator (2), and the valve body (1) is provided with a valve plate (3) inside, the valve plate (3) is provided with a mechanism cavity (31) inside; Connecting pipe (4) is arranged in the mechanism cavity (31), the bottom end of the connecting pipe (4) is provided with a first bevel gear (5); Two scrapers (6) are symmetrically arranged on both sides of the valve plate (3), the scraper (6) is connected with a connecting column (7), one end of the connecting column (7) is provided with a second bevel gear (8), the second bevel gear (8) is engaged with the first bevel gear (5); Valve rod (9) is arranged in the mechanism cavity (31), one end of the valve rod (9) is connected with the bottom wall in the mechanism cavity (31), and the other end of the valve rod (9) is connected with the electric actuator (2), the connecting pipe (4) is sleeved on the surface of the valve rod (9).

2. A sea water resistant butterfly valve according to claim 1, characterized in that: The valve plate (3) is provided with a sealing rubber ring (10).

3. A sea water resistant butterfly valve according to claim 1, characterized in that: The two sides of the scraper (6) are symmetrically arranged as a chamfer structure.

4. A sea water resistant butterfly valve according to claim 1, characterized in that: The valve body (1) is provided with a pressure sealing cover (11).

5. A sea water resistant butterfly valve according to claim 4, characterised in that: The pressure sealing cover (11) is provided with a support (12), and the electric actuator (2) is installed on the support (12).

6. A seawater resistant butterfly valve according to claim 4, wherein: The pressure sealing cover (11) and the valve body (1) are provided with a sealing gasket (13).

7. A seawater resistant butterfly valve according to claim 1, wherein: The valve rod (9) comprises a first rod body (91) fixedly sleeved with the connecting pipe (4), the bottom end of the first rod body (91) is provided with a second rod body (92), the bottom end of the first rod body (91) is connected with a limiting column (93), the top end of the second rod body (92) is provided with a limiting groove (921) slidably connected with the limiting column (93), and the bottom end of the second rod body (92) is fixedly connected with the bottom wall in the mechanism cavity (31).

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