Electric ventilation butterfly valve

Abstract

The utility model relates to the technical field of ventilation butterfly valves, in particular to an electric ventilation butterfly valve. The electric ventilation butterfly valve comprises a valve body, two symmetrically-distributed and detachable butterfly plates are installed in the valve body, a valve shaft is sleeved with a sealing ring tightly attached to the outer ring wall of the valve body, an annular groove is formed in the valve shaft, an annular sealing rubber ring in interference fit with the valve body is installed in the annular groove, and arc-shaped grooves are formed in the arc walls of the butterfly plates. And an arc-shaped sealing rubber ring which is in interference fit with the inner ring wall of the valve body is fixedly mounted in the arc-shaped groove. The sealing ring arranged on the valve shaft in a sleeving mode and the annular sealing rubber ring which is installed in the annular groove and is in interference fit with the valve body can effectively achieve sealing between the valve shaft and the valve body. The arc-shaped sealing rubber ring which is in interference fit with the inner ring wall of the valve body is fixedly installed in the arc-shaped groove of the arc wall of the butterfly plate, good sealing between the butterfly plate and the inner cavity of the valve body is achieved, leakage in the ventilation process can be effectively prevented, and the performance and efficiency of a system are improved.

Description

TECHNICAL FIELD

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

[0002] Ventilation butterfly valve is applied to the dust-containing cold wind or hot wind gas pipeline in ventilation, environmental protection engineering in chemical industry, building material, power station, glass and other industries, as the pipeline control device of gas medium regulating flow or cut-off;In ventilation system, ventilation butterfly valve as key component, to the stable operation and performance of system plays a vital role.

[0003] The sealing structure design of early ventilation butterfly valve is relatively simple, usually only rely on the basic adhesion between butterfly plate and valve body to realize sealing, but in long-term use process, under the influence of air scouring, temperature change and pipeline vibration and other factors, gap between butterfly plate and valve body is prone to appear, leading to gas leakage, and the ventilation butterfly valve with poor sealing effect has certain security risks in some special environments.

[0004] Therefore, it is necessary to provide a new electric ventilation butterfly valve to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a kind of electric ventilation butterfly valve with good sealing effect.

[0006] The electric ventilation butterfly valve provided by the utility model includes: valve body, connecting hole is formed on the valve body, a plurality of reinforcing plates distributed around the axis of the valve body are welded on the valve body, mounting bracket is welded on the upper and lower ends of the valve body, valve shaft is rotatably connected in the valve body, electric actuator is fixedly installed on the valve body, and the output end of the electric actuator is fixedly connected with one end of the valve shaft, two symmetrical and detachable butterfly plates are installed in the valve body, sealing ring is sleeved on the valve shaft and closely attached to the outer ring wall of the valve body, annular recess is formed in the valve shaft, and annular sealing rubber ring is installed in the annular recess and is in interference fit with the valve body, arc-shaped recess is formed in the arc wall of the butterfly plate, and arc-shaped sealing rubber ring is fixedly installed in the arc-shaped recess and is in interference fit with the inner ring wall of the valve body.

[0007] Preferably, the two mounting brackets are fixedly connected with a rotating ring through butt bolts, and the two rotating rings are rotatably connected with the two ends of the valve shaft, and one of the rotating rings is also fixedly installed with an electric actuator through a group of butt bolts.

[0008] Preferably, a group of lifting rings are welded on the outer ring wall of the valve body.

[0009] Preferably, a limiting groove is formed in the inner top wall of the mounting bracket, and the butt bolt on the mounting bracket is clamped in the limiting groove.

[0010] Preferably, a limiting block for limiting the maximum rotation angle of the butterfly plate to ninety degrees is fixedly installed on the inner ring wall of the valve body.

[0011] Preferably, two symmetrical insertion slots for inserting two butterfly plates are formed on the valve shaft, and installation grooves are formed on both sides of the two insertion slots, the two butterfly plates are fixed in the two insertion slots by fixing bolts, and the end portions of the fixing bolts are located in the installation grooves.

[0012] Preferably, the outer ring wall edge of the butterfly plate is chamfered.

[0013] Preferably, the sealing ring, the annular sealing rubber ring and the arc-shaped sealing rubber ring are all made of fluorine rubber.

[0014] Compared with the related art, the electric ventilation butterfly valve has the following beneficial effects:

[0015] The sealing ring and the annular sealing rubber ring installed in the annular groove and in interference fit with the valve body can effectively realize the sealing between the valve shaft and the valve body; the arc-shaped sealing rubber ring in interference fit with the inner ring wall of the valve body and fixedly installed in the arc-shaped groove of the butterfly plate arc wall realizes the good sealing between the butterfly plate and the inner cavity of the valve body, can effectively prevent leakage in the ventilation process, and improves the performance and efficiency of the system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic view of a preferred embodiment of the electric ventilation butterfly valve provided by the utility model is shown in the figure;

[0017] Figure 2 A structure schematic view of the valve body is shown in the figure; Figure 1

[0018] A structure schematic view of the valve shaft is shown in the figure; Figure 3 Figure 1 A structure schematic view of the butterfly plate is shown in the figure;

[0019] Figure 4 Figure 1 A structure schematic view of the A place is shown in the figure;

[0020] Figure 5 A structure schematic view of the B place is shown in the figure; Figure 2

[0021] A structure schematic view of the C place is shown in the figure. Figure 6 Figure 3

[0022] Figure 7 Figure 4

[0023] ​​​​​​The following are the labeling elements in the diagram: 1. Valve body; 11. Connecting hole; 12. Reinforcing plate; 13. Lifting ring; 2. Mounting bracket; 21. Limiting groove; 3. Valve shaft; 31. Annular groove; 32. Annular sealing ring; 33. Sealing ring; 34. Slot; 35. Mounting groove; 36. Connecting plate; 37. Rotary ring; 38. Connecting bolt; 4. Electric actuator; 5. Button plate; 51. Arc-shaped groove; 52. Arc-shaped sealing ring; 53. Fixing bolt; 6. Limiting block. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 7 This utility model provides an electric ventilation butterfly valve, which includes: a valve body 1, a connecting hole 11 on the valve body 1, and multiple reinforcing plates 12 welded to the valve body 1 around its axis. Mounting brackets 2 are welded to both the upper and lower ends of the valve body 1. A valve shaft 3 is rotatably connected to the valve body 1. An electric actuator 4 is fixedly installed on the valve body 1, and the output end of the electric actuator 4 is fixedly connected to one end of the valve shaft 3. Two symmetrically distributed and detachable butterfly plates 5 are installed inside the valve body 1. A sealing ring 33 is fitted on the valve shaft 3 and is tightly attached to the outer ring wall of the valve body 1. An annular groove 31 is opened on the valve shaft 3, and an annular sealing ring 32 that is interference-fitted with the valve body 1 is installed in the annular groove 31. An arc-shaped groove 51 is opened on the arc-shaped wall of the butterfly plate 5, and an arc-shaped sealing ring 52 that is interference-fitted with the inner ring wall of the valve body 1 is fixedly installed in the arc-shaped groove 51.

[0027] It should be noted that: In this utility model, the valve shaft 3 is driven by an electric actuator 4, which drives the butterfly plate 5 mounted on the valve shaft 3 to rotate within a range of zero to ninety degrees. The sealing between the valve shaft 3 and the valve body 1 is achieved through the sealing ring 33 and the annular sealing rubber ring 32, which are interference-fitted with the valve body 1. Furthermore, the sealing between the butterfly plate 5 and the inner cavity of the valve body 1 is achieved through the arc-shaped sealing rubber ring 52. The valve body 1 has a connection hole 11 for easy connection with other pipe fittings. Multiple reinforcing plates 12 distributed around its axis enhance the structural strength of the valve body 1, making it more robust and durable, and able to withstand certain pressure and impact forces. The mounting brackets 2 welded to the upper and lower ends of the valve body 1 facilitate the installation of the valve body 1, making it easy to stably mount it. Installed in the corresponding piping system; the electric actuator 4 drives the valve shaft 3, which can precisely control the rotation angle of the butterfly plate 5, with a rotation range of zero to ninety degrees. It can accurately adjust the ventilation volume, and the electric drive method is more labor-saving and efficient than manual methods, making it easier to achieve automated control; the sealing ring 33 sleeved on the valve shaft 3 and the annular sealing rubber ring 32 installed in the annular groove 31, which is interference-fitted with the valve body 1, can effectively achieve the seal between the valve shaft 3 and the valve body 1; the arc-shaped sealing rubber ring 52, which is interference-fitted with the inner annular wall of the valve body 1 and fixedly installed in the arc-shaped groove 51 of the arc wall of the butterfly plate 5, achieves a good seal between the butterfly plate 5 and the inner cavity of the valve body 1, which can effectively prevent leakage during the ventilation process and improve the performance and efficiency of the system;

[0028] The outer ring wall edge of the butterfly plate 5 is chamfered to facilitate the sealing of the pipe by the butterfly plate 5.

[0029] Among them, the sealing ring 33, the annular sealing ring 32, and the arc-shaped sealing ring 52 are all made of fluororubber; fluororubber has strong corrosion resistance, good high temperature resistance, good aging resistance, excellent sealing performance, and low coefficient of friction, which makes the ventilation butterfly valve in this utility model suitable for various environments.

[0030] In the embodiments of this utility model, please refer to Figure 1 and Figure 3 Both mounting brackets 2 are fixedly connected to rotating rings 37 by connecting bolts 38, and the two rotating rings 37 are rotatably connected to both ends of the valve shaft 3 respectively. One of the rotating rings 37 is also fixedly mounted with an electric actuator 4 by a set of connecting bolts 38.

[0031] It should be noted that the rotating ring 37 restricts the valve shaft 3, ensuring its rotation while preventing it from detaching from the valve body 1. It is connected to the valve body 1 by the connecting bolt 38, which facilitates its installation.

[0032] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 A set of lifting rings 13 are also welded to the outer ring wall of valve body 1;

[0033] It should be noted that during the transportation and installation of the electric ventilation butterfly valve, the lifting ring 13 can be used to connect lifting equipment, such as cranes and hoists. Through these lifting rings 13, the butterfly valve can be easily lifted and moved to the designated position, which greatly reduces the difficulty and risk of manual handling and improves installation efficiency. This effect is especially significant for butterfly valves with larger weights.

[0034] In the embodiments of this utility model, please refer to Figure 5 A limiting groove 21 is provided on the inner top wall of the mounting bracket 2, and the connecting bolt 38 on the mounting bracket 2 is engaged in the limiting groove 21;

[0035] It should be noted that when installing the swivel ring 37 and the mounting bracket 2, the mating bolt 38 should be inserted from the bottom of the mounting bracket 2 upwards to prevent the mating bolt 38 from rotating, and then the nut should be tightened for easy installation.

[0036] In the embodiments of this utility model, please refer to Figure 2 A limiting block 6 is fixedly installed on the inner ring wall of the valve body 1 to limit the maximum rotation angle of the butterfly plate 5 to ninety degrees.

[0037] It should be noted that the maximum rotation angle of the butterfly plate 5 is explicitly limited to ninety degrees to ensure that the rotation range of the butterfly plate 5 meets the design requirements. This is to prevent the valve from failing to open or close properly due to excessive rotation of the butterfly plate 5, which would affect the flow control and normal operation of the ventilation system.

[0038] In the embodiments of this utility model, please refer to Figure 6 and Figure 7 The valve shaft 3 has two symmetrically distributed slots 34 for inserting two butterfly plates 5, and each of the two slots 34 has a mounting groove 35 on both sides. The two butterfly plates 5 are fixed in the two slots 34 by fixing bolts 53, and the ends of the fixing bolts 53 are located in the mounting grooves 35.

[0039] It should be noted that during transportation, the valve body 1 and the butterfly plate 5 can be transported separately to reduce their weight and facilitate transportation. When installing them, the butterfly plate 5 is inserted into the slot 34 on the valve shaft 3 and then installed using the fixing bolts 53, so that the butterfly plate 5 can be disassembled and installed, making it convenient for maintenance and replacement.

[0040] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electric ventilation butterfly valve, comprising a valve body (1), wherein the valve body (1) has a connection hole (11), and a plurality of reinforcing plates (12) distributed around its axis are welded to the valve body (1), and mounting brackets (2) are welded to both the upper and lower ends of the valve body (1), characterized in that: A valve shaft (3) is rotatably connected to the valve body (1). An electric actuator (4) is fixedly installed on the valve body (1), and the output end of the electric actuator (4) is fixedly connected to one end of the valve shaft (3). Two symmetrically distributed and detachable butterfly plates (5) are installed inside the valve body (1). A sealing ring (33) that fits tightly against the outer ring wall of the valve body (1) is fitted on the valve shaft (3). An annular groove (31) is opened on the valve shaft (3), and an annular sealing ring (32) that is interference-fitted with the valve body (1) is installed in the annular groove (31). An arc-shaped groove (51) is opened on the arc wall of the butterfly plate (5), and an arc-shaped sealing ring (52) that is interference-fitted with the inner ring wall of the valve body (1) is fixedly installed in the arc-shaped groove (51).

2. The electric ventilation butterfly valve according to claim 1, characterized in that, Both mounting brackets (2) are fixedly connected to a rotating ring (37) by a butt bolt (38), and the two rotating rings (37) are rotatably connected to both ends of the valve shaft (3). One of the rotating rings (37) is also fixedly mounted with an electric actuator (4) by a set of butt bolts (38).

3. The electric ventilation butterfly valve according to claim 1, characterized in that, A set of lifting rings (13) are also welded to the outer ring wall of the valve body (1).

4. The electric ventilation butterfly valve according to claim 1, characterized in that, A limiting groove (21) is provided on the inner top wall of the mounting bracket (2), and the connecting bolt (38) on the mounting bracket (2) is engaged in the limiting groove (21).

5. The electric ventilation butterfly valve according to claim 1, characterized in that, A limiting block (6) is fixedly installed on the inner ring wall of the valve body (1) to limit the maximum rotation angle of the butterfly plate (5) to ninety degrees.

6. The electric ventilation butterfly valve according to claim 1, characterized in that, The valve shaft (3) has two symmetrically distributed slots (34) for inserting two butterfly plates (5), and each of the two slots (34) has a mounting groove (35) on both sides. The two butterfly plates (5) are fixed in the two slots (34) by fixing bolts (53), and the ends of the fixing bolts (53) are located in the mounting grooves (35).

7. The electric ventilation butterfly valve according to claim 1, characterized in that, The outer ring wall edge of the butterfly plate (5) is chamfered.

8. The electric ventilation butterfly valve according to claim 1, characterized in that, The sealing ring (33), the annular sealing ring (32), and the arc-shaped sealing ring (52) are all made of fluororubber.

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