Butterfly valve

Abstract

The utility model discloses a butterfly valve which comprises a butterfly valve main shell and a butterfly plate body, the outer wall of the butterfly plate body is sleeved with a butterfly plate sealing sleeve, the butterfly plate sealing sleeve is fixedly installed in the butterfly valve main shell, and the inner wall of the butterfly plate sealing sleeve is provided with a fixed installation ring groove. A butterfly plate rubber sleeve is fixedly mounted in the fixed mounting ring groove, the inner wall of the butterfly plate rubber sleeve is attached to the outer wall of the butterfly plate body, and water gathering ring grooves are formed in the two sides of the butterfly plate rubber sleeve. According to the butterfly valve, the butterfly plate body is sealed through the butterfly plate sealing sleeve and the butterfly plate rubber sleeve, a medium enters the water gathering ring groove, the side of the butterfly plate rubber sleeve is extruded towards the middle, the inner wall of the middle of the butterfly plate rubber sleeve extrudes the butterfly plate body, the sealing performance between the butterfly plate body and the butterfly plate sealing sleeve is improved, and the problem that leakage exists on the edge of the butterfly plate is solved; the adverse effect of medium leakage on the use environment of the butterfly valve is avoided, and long-term use of the butterfly valve is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field especially relates to a butterfly valve. BACKGROUND

[0002] In the prior art, butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for low pressure pipeline medium switch control butterfly valve is to close piece (valve lobe or butterfly plate) for disc, rotates around the 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 various types of fluid flow.In pipeline, mainly cut off and throttling effect.The butterfly valve opening and closing element is a disc-shaped butterfly plate, rotates in the valve body around its own axis, so as to achieve the purpose of opening and closing or adjusting.The main disadvantages of butterfly valve include limited sealing performance, not suitable for high pressure and high pressure throttling, susceptible to cavitation and blockage of flow, lower corrosion resistance, difficult to clean, weaker pressure bearing capacity, small use pressure and working temperature range.

[0003] Through retrieval, the patent with Chinese patent application number 202420287905.0 discloses a butterfly valve, which comprises a valve body, at least two valve plate assemblies, a driving mechanism and at least two valve rods, the at least two valve plate assemblies are arranged in the inner cavity of the valve body along the medium flow direction in the butterfly valve; the medium flow direction is the first direction; the valve plate assembly comprises at least one valve plate and a sealing element, the sealing element is connected with the valve plate, when the valve plate is perpendicular to the first direction, the sealing element cooperates with the valve plate to realize sealing effect; the valve rod penetrates through the valve body, the valve rod is fixedly connected with the valve plate; the upper end of the valve rod extends out of the valve body; the driving mechanism can drive the at least two valve rods to rotate respectively, thereby driving the valve plate to rotate in the inner cavity of the valve body.

[0004] The above-mentioned patent has the following disadvantages: although the butterfly valve prolongs the service life to a certain extent, there is still a problem of relatively poor sealing performance in the overall use process, and there is a problem of leakage at the edge of the butterfly plate in the use process, which adversely affects the use environment of the butterfly valve and is not conducive to long-term use of the butterfly valve. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the shortcomings in the prior art and provides a butterfly valve.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a butterfly valve, including butterfly valve main casing and butterfly plate main body, the outer wall of butterfly plate main body is sleeved with butterfly plate sealing sleeve, and the inside of butterfly valve main casing is fixedly installed to butterfly plate sealing sleeve, and the inner wall of butterfly plate sealing sleeve is equipped with fixed installation ring groove, the inside of fixed installation ring groove is fixedly installed with butterfly plate rubber sleeve, the inner wall of butterfly plate rubber sleeve is pasted with butterfly plate main body, and the both sides of butterfly plate rubber sleeve are equipped with water collecting ring groove, the both sides of butterfly plate sealing sleeve are provided with limit pressure ring, the outer wall of one end of limit pressure ring is fixedly sleeved with sealing rubber ring, and the inside of limit pressure ring is provided with protection rubber sleeve, and the outer wall of protection rubber sleeve is fixedly connected with external thread installation ring, and the inner wall of butterfly valve main casing is threadedly connected with external thread installation ring and limit pressure ring.

[0008] As a further scheme of the utility model: the top of butterfly plate main body is fixedly installed with butterfly plate control rod, and the top of butterfly plate control rod is fixedly installed with shaft coupling.

[0009] As a further scheme of the utility model: the outer wall of butterfly plate control rod is sleeved with sealing connection barrel, the top of sealing connection barrel is fixedly installed with electric actuator, and the electric actuator is connected with shaft coupling.

[0010] As a further scheme of the utility model: the outer wall bottom of butterfly plate control rod is rotatably installed with rotating bearing, and the outer wall top of butterfly plate control rod is rotatably installed with shaft sleeve.

[0011] As a further scheme of the utility model: the bottom of butterfly plate main body is provided with positioning pin shaft, and the outer wall top of positioning pin shaft is rotatably installed with positioning bearing.

[0012] As a further scheme of the utility model: the bottom of the outer wall of positioning pin shaft is sleeved with sealing rubber sleeve, and the bottom of sealing rubber sleeve is inserted with connecting top rod.

[0013] As a further scheme of the utility model: the bottom of connecting top rod is fixedly connected with threaded pressing block, and the outer wall of threaded pressing block is threadedly sleeved with positioning connection barrel.

[0014] Compared with the prior art, the utility model provides a butterfly valve with the following beneficial effects:

[0015] The butterfly valve seals the butterfly plate main body through the butterfly plate sealing sleeve and the butterfly plate rubber sleeve, the medium enters the water collecting ring groove, the side of the butterfly plate rubber sleeve is extruded to the middle, the middle inner wall of the butterfly plate rubber sleeve extrudes the butterfly plate main body, the sealing property between the butterfly plate main body and the butterfly plate sealing sleeve is improved, the problem of leakage of the butterfly plate edge is solved, the medium leakage does not cause adverse effects on the use environment of the butterfly valve, and the butterfly valve is suitable for long-term use.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the overall assembly of this utility model.

[0018] Figure 2 This is a partial cross-sectional view of the overall assembly of this utility model. Figure 1 .

[0019] Figure 3 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0020] Figure 4 This is a partial cross-sectional view of the overall assembly of this utility model. Figure 2 .

[0021] Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0022] In the diagram: 1. Butterfly valve main body; 2. Sealing connecting sleeve; 3. Electric actuator; 4. Positioning connecting sleeve; 5. Fixed ear plate; 6. Butterfly plate body; 7. Butterfly plate sealing sleeve; 8. Protective rubber sleeve; 9. Butterfly plate control rod; 10. Rotary bearing; 11. Shaft sleeve; 12. Coupling; 13. Positioning pin; 14. Positioning bearing; 15. Sealing rubber sleeve; 16. Connecting push rod; 17. Threaded pressure block; 18. External threaded mounting ring; 19. Limiting pressure ring; 20. Sealing rubber ring; 21. Butterfly plate rubber sleeve; 22. Water collection ring groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] A type of butterfly valve, such as Figures 1 to 5 As shown, the butterfly valve includes a main housing 1 and a butterfly plate body 6. The top of the main housing 1 is integrally cast with a sealing connecting cylinder 2. The top of the sealing connecting cylinder 2 is fixedly installed with an electric actuator 3 via a flange. The electric actuator 3 receives a control signal, drives the motor to rotate, and then rotates the butterfly plate body 6 through a transmission mechanism (such as a gear, worm gear, or worm wheel).

[0025] The bottom of the butterfly valve main body 1 is integrally cast with a positioning connecting cylinder 4. Both sides of the positioning connecting cylinder 4 and the sealing connecting cylinder 2 are integrally cast with fixing ear plates 5, which facilitates the positioning and installation of the entire butterfly valve.

[0026] The outer wall of the butterfly plate body 6 is sleeved with a butterfly plate sealing sleeve 7, which is fixedly installed in the interior of the butterfly valve main shell 1, and the two sides of the butterfly plate sealing sleeve 7 are provided with limiting pressure rings 19 which are screwedly installed on the inner wall of the butterfly valve main shell 1, and the outer wall of one end of the limiting pressure ring 19 close to the butterfly plate sealing sleeve 7 is fixedly sleeved with a sealing rubber ring 20.

[0027] The limiting pressure ring 19 fixes the butterfly plate sealing sleeve 7 in the interior of the butterfly valve main shell 1, and the sealing rubber ring 20 blocks the gap between the butterfly plate sealing sleeve 7 and the butterfly valve main shell 1.

[0028] The inner wall of the butterfly plate sealing sleeve 7 is provided as a spherical surface, and the outer wall of the butterfly plate body 6 is provided as a spherical surface matched with the butterfly plate sealing sleeve 7, and the two are provided as a gap fit, and the gap is less than or equal to ten filaments.

[0029] The inner wall of the butterfly plate sealing sleeve 7 is provided with a fixed installation ring groove, and the interior of the fixed installation ring groove is fixedly installed with a butterfly plate rubber sleeve 21, the inner wall of the butterfly plate rubber sleeve 21 is attached to the outer wall of the butterfly plate body 6, and the two sides of the butterfly plate rubber sleeve 21 close to one side of the butterfly plate body 6 are provided with water collecting ring grooves 22.

[0030] When the butterfly plate body 6 completely blocks the butterfly valve main shell 1, the medium needs to pass through the interior of the water collecting ring groove 22, so that the side of the butterfly plate rubber sleeve 21 is extruded to the middle, so that the middle inner wall of the butterfly plate rubber sleeve 21 extrudes the butterfly plate body 6, and the sealing property between the butterfly plate body 6 and the butterfly plate sealing sleeve 7 is improved.

[0031] The interior of the limiting pressure ring 19 is provided with a protective rubber sleeve 8, the outer wall of the protective rubber sleeve 8 is fixedly connected with an outer thread installation ring 18, and the outer thread installation ring 18 is threadedly connected with the inner wall of the butterfly valve main shell 1; the protective rubber sleeve 8 protects the inner wall of the butterfly valve main shell 1 and the limiting pressure ring 19, and improves the corrosion resistance thereof.

[0032] The top end of the butterfly plate body 6 is provided with a slot one, the interior of the slot one is fixedly installed with a butterfly plate control rod 9, the top end of the butterfly plate control rod 9 is fixedly installed with a shaft coupling 12, and the shaft coupling 12 is connected with the drive motor output shaft of the electric actuator 3.

[0033] The outer wall bottom of the butterfly plate control rod 9 is rotatably installed with a rotating bearing 10, and the outer wall top of the butterfly plate control rod 9 is rotatably installed with a shaft sleeve 11, and the rotating bearing 10 and the shaft sleeve 11 are fixedly installed in the interior of the sealing connection cylinder 2.

[0034] The bottom end of the butterfly plate body 6 is provided with a slot two, the interior of the slot two is provided with a positioning pin shaft 13, the outer wall top of the positioning pin shaft 13 is rotatably installed with a positioning bearing 14, and the positioning bearing 14 is fixed with the inner wall of the slot two.

[0035] The outer wall bottom of the positioning pin shaft 13 is sleeved with a sealing rubber sleeve 15, the bottom end of the sealing rubber sleeve 15 is sleeved with a connecting top rod 16, the bottom end of the connecting top rod 16 is fixedly connected with a threaded pressing block 17, and the threaded pressing block 17 is screwed into the inside of the positioning connecting cylinder 4.

[0036] Working principle:

[0037] Please refer to Figures 1 to 5 , the device is assembled as shown in the figure;

[0038] When the device is used, instructions are sent to the electric actuator 3 remotely, the electric actuator 3 drives the butterfly plate body 6 to rotate through the butterfly plate control rod 9, and the medium flows through the butterfly valve main shell 1; when flow cutting is needed, the electric actuator 3 controls the butterfly plate body 6 to close, the medium entering the butterfly valve main shell 1 in the flow direction enters the water collecting ring groove 22, the side of the butterfly plate rubber sleeve 21 is extruded to the middle, the middle inner wall of the butterfly plate rubber sleeve 21 extrudes the butterfly plate body 6, and the sealing property between the butterfly plate body 6 and the butterfly plate sealing sleeve 7 is improved.

[0039] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, should be covered in the protection scope of the utility model.

Claims

1. A butterfly valve comprising a butterfly valve main housing (1) and a butterfly plate main body (6), characterized in that: The outer wall of the butterfly plate body (6) is sleeved with a butterfly plate sealing sleeve (7), the butterfly plate sealing sleeve (7) is fixedly installed in the inside of the butterfly valve main shell (1), the inner wall of the butterfly plate sealing sleeve (7) is provided with a fixed installation ring groove, the inside of the fixed installation ring groove is fixedly installed with a butterfly plate rubber sleeve (21), the inner wall of the butterfly plate rubber sleeve (21) is attached to the outer wall of the butterfly plate body (6), and the both sides of the butterfly plate rubber sleeve (21) are provided with water collecting ring grooves (22).

2. The butterfly valve of claim 1, wherein: The both sides of the butterfly plate sealing sleeve (7) are provided with limiting pressure rings (19), the outer wall of one end of the limiting pressure ring (19) is fixedly sleeved with a sealing rubber ring (20), the inside of the limiting pressure ring (19) is provided with a protective rubber sleeve (8), the outer wall of the protective rubber sleeve (8) is fixedly connected with an external thread installation ring (18), and the external thread installation ring (18) and the limiting pressure ring (19) are in threaded connection with the inner wall of the butterfly valve main shell (1).

3. The butterfly valve of claim 1, wherein: The top end of the butterfly plate body (6) is fixedly installed with a butterfly plate control rod (9), and the top end of the butterfly plate control rod (9) is fixedly installed with a shaft coupling (12).

4. A butterfly valve according to claim 3, wherein: The outer wall of the butterfly plate control rod (9) is sleeved with a sealing connection barrel (2), the top end of the sealing connection barrel (2) is fixedly installed with an electric actuator (3), and the electric actuator (3) is connected with the shaft coupling (12).

5. The butterfly valve of claim 3, wherein: The outer wall bottom of the butterfly plate control rod (9) is rotatably installed with a rotating bearing (10), and the outer wall top of the butterfly plate control rod (9) is rotatably installed with a shaft sleeve (11).

6. The butterfly valve of claim 1, wherein: The bottom end of the butterfly plate body (6) is provided with a positioning pin shaft (13), and the outer wall top of the positioning pin shaft (13) is rotatably installed with a positioning bearing (14).

7. A butterfly valve according to claim 6, characterised in that: The outer wall bottom of the positioning pin shaft (13) is sleeved with a sealing rubber sleeve (15), and the bottom end of the sealing rubber sleeve (15) is inserted with a connecting top rod (16).

8. A butterfly valve according to claim 7, characterised in that: The bottom end of the connecting top rod (16) is fixedly connected with a threaded pressing block (17), and the outer wall of the threaded pressing block (17) is threadedly sleeved with a positioning connection barrel (4).

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