Ventilation butterfly valve capable of accurately adjusting flow

Abstract

The utility model relates to the technical field of butterfly valve processing, and discloses a ventilation butterfly valve capable of accurately adjusting flow, which comprises a valve body, an air inlet pipe communicated with the top of the valve body and an air outlet pipe communicated with the bottom of the valve body, an adjusting rod is rotatably arranged on the valve body along the horizontal direction, a valve plate is arranged on the adjusting rod, and the valve plate is arranged on the valve body. An adjusting rod is arranged on the valve body, an adjusting disc is arranged at one end of the adjusting rod, a large gear ring is arranged on the adjusting disc, a driving rod is rotationally arranged on the outer side of the valve body in the direction parallel to the adjusting rod, and a first gear meshed with the inner side of the large gear ring is arranged on the driving rod. An adjusting mechanism used for driving the first gear to rotate is arranged on the outer side of the valve body. The utility model has the effect of accurately adjusting the flow.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve processing technical field, especially a kind of ventilation butterfly valve capable of accurately adjusting flow. BACKGROUND

[0002] Ventilation butterfly valve is applied to 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 pipeline control device for adjusting flow or cutting off gas medium.

[0003] Common single-piece ventilation butterfly valve is usually directly adjusted using hand wheel, but directly using hand wheel to rotate valve plate for adjusting, the linearity of air volume adjustment is poor, and flow cannot be accurately adjusted. SUMMARY

[0004] The utility model discloses a kind of ventilation butterfly valve capable of accurately adjusting flow, with the effect that flow can be accurately adjusted.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: including valve body, the air inlet pipe being communicated and being arranged at the top of the valve body and the air outlet pipe being communicated and being arranged at the bottom of the valve body, the adjusting rod is rotationally arranged on the valve body along horizontal direction, the valve plate is arranged on the adjusting rod, the valve plate is located in the valve body, the adjusting disc is arranged on one end of the adjusting rod, the large gear ring is arranged on the adjusting disc, the drive rod is rotationally arranged on the outside of the valve body along the direction parallel to the adjusting rod, the first gear wheel is arranged on the drive rod and engaged with the inside of the large gear ring, the first gear wheel is provided with a set distance between the end and the adjusting disc, the adjusting mechanism is arranged on the outside of the valve body for driving the first gear wheel to rotate.

[0006] The utility model further provides that: the adjusting mechanism includes rotationally arranged on the valve body along vertical direction Rotational screw and the moving block being cooperatively arranged on the Rotational screw, the moving block is vertically provided with moving rack on one side, the second gear wheel is arranged on the end of the drive rod away from the adjusting disc and engaged with the moving rack, the drive motor is arranged on the valve body for driving the Rotational screw.

[0007] The utility model further provides that: the fixed block is arranged on the valve body, the drive rod is rotationally arranged on the fixed block, when the moving block is in contact with the fixed block, the central axis of the air inlet pipe is perpendicular to the horizontal plane where the valve plate is located.

[0008] The utility model further provides that: the first limiting block is arranged on the valve body, when the moving block is in contact with the first limiting block, the plane where the valve plate is located is parallel to the central axis of the air inlet pipe.

[0009] The utility model discloses further provide: the one side vertical of mobile rack is provided with the second limit block, be provided with third limit block on fixed block, the third limit block is along the limit slot of cooperation with second limit block that sets up in vertical direction.

[0010] The utility model discloses further provide: the adjusting rod is away from the one end of adjusting disc and is provided with indicating rod along with the direction of coinciding with the horizontal plane where valve plate is located.

[0011] The utility model discloses further provide: the valve body is provided with the indicating disc of circular ring on the side close to indicating rod, and the central axis of indicating disc coincides with the central axis of adjusting rod.

[0012] The utility model discloses further provide: the end of indicating rod can be movable and is attached to the inner wall of indicating disc.

[0013] The utility model discloses further provide: the both ends of valve plate are provided with elastic connecting layer, and the elastic connecting layer can be attached to the inner wall of valve body.

[0014] The utility model discloses the beneficial effect is:

[0015] 1、 through setting adjusting disc, big gear ring and first gear etc., when needing to adjust ventilation butterfly valve, open adjusting mechanism and drive the rotation of drive rod and first gear, and then big gear ring and adjusting rod rotate, thereby make valve plate rotate in valve body, adjust air volume and flow etc., because the inner diameter of first gear is much smaller than the inner diameter of big gear ring, therefore drive the rotation of first gear can drive big gear ring and valve plate to rotate slowly, can be accurate to indicate the rotation angle of valve plate through the number of turns of first gear, thereby realize the accurate adjustment of flow.

[0016] 2、 through setting rotation screw, mobile rack etc., when needing to adjust ventilation butterfly valve, open drive motor, drive rotation screw and drive mobile rack to lift, and then drive the rotation of second gear and first gear, and consequently drive big gear ring and valve plate to rotate, therefore can further control the number of turns of second gear and first gear through the distance of mobile rack movement, further realize the accurate adjustment of valve plate rotation angle.

[0017] 3、 through setting indicating rod and indicating disc, can directly indicate the rotation angle of valve plate, and the staff is convenient for observation. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 is a structural schematic diagram of one embodiment of the ventilation butterfly valve capable of accurately adjusting flow rate of the present application;

[0020] Figure 2 is Figure 1 is an enlarged schematic diagram of A in the figure;

[0021] Figure 3 is a partial cross-sectional structural schematic diagram of one embodiment of the ventilation butterfly valve capable of accurately adjusting flow rate of the present application.

[0022] In the figure, 1, valve body; 2, air inlet pipe; 3, air outlet pipe; 4, adjusting rod; 5, valve plate; 6, adjusting disc; 7, large gear ring; 8, drive rod; 9, first gear; 10, adjusting mechanism; 10a, rotating screw; 10b, moving block; 11, moving rack; 12, second gear; 13, drive motor; 14, fixed block; 15, first limit block; 16, second limit block; 17, third limit block; 18, limit groove; 19, indicating rod; 20, indicating disc; 21, elastic connection layer. DETAILED DESCRIPTION

[0023] The technical scheme of the present application will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0024] The present application provides a ventilation butterfly valve capable of accurately adjusting flow rate, such as Figures 1 to 3As shown, including the valve body 1, the air inlet pipe 2 and the air outlet pipe 3 are communicated with the top and bottom of the valve body 1 respectively, the adjusting rod 4 is horizontally arranged on the valve body 1, the valve plate 5 is arranged on the adjusting rod 4, the valve plate 5 is located in the valve body 1, the adjusting disc 6 is arranged on one end of the adjusting rod 4, the large gear ring 7 is arranged on the adjusting disc 6, the drive rod 8 is arranged on the outer side of the valve body 1 in parallel with the adjusting rod 4, the first gear 9 is arranged on the drive rod 8 and engaged with the inner side of the large gear ring 7, the first gear 9 is arranged at a distance from the adjusting disc 6, and the adjusting mechanism 10 is arranged on the outer side of the valve body 1 to drive the first gear 9 to rotate.

[0025] Further, the adjusting mechanism 10 includes the rotating screw rod 10a arranged on the valve body 1 in the vertical direction and the moving block 10b arranged on the rotating screw rod 10a, one side of the moving block 10b is vertically provided with the moving rack 11, the second gear 12 is arranged on the end of the drive rod 8 away from the adjusting disc 6 and engaged with the moving rack 11, and the drive motor 13 is arranged on the valve body 1 to drive the rotating screw rod 10a.

[0026] Further, the fixed block 14 is arranged on the valve body 1, and the drive rod 8 is arranged on the fixed block 14, when the moving block 10b abuts against the fixed block 14, the central axis of the air inlet pipe 2 is perpendicular to the horizontal plane where the valve plate 5 is located.

[0027] Further, the first limiting block 15 is arranged on the valve body 1, when the moving block 10b abuts against the first limiting block 15, the plane where the valve plate 5 is located is parallel to the central axis of the air inlet pipe 2.

[0028] Further, the second limiting block 16 is vertically arranged on one side of the moving rack 11, the third limiting block 17 is arranged on the fixed block 14, and the limiting groove 18 is arranged on the third limiting block 17 in the vertical direction and matched with the second limiting block 16.

[0029] Further, the indicating rod 19 is arranged on the end of the adjusting rod 4 away from the adjusting disc 6 in a direction coinciding with the horizontal plane where the valve plate 5 is located.

[0030] Further, the indicating disc 20 is arranged on the side of the valve body 1 close to the indicating rod 19, and the indicating disc 20 is circular, the central axis of the indicating disc 20 coincides with the central axis of the adjusting rod 4.

[0031] Further, the end of the indicating rod 19 is movably attached to the inner wall of the indicating disc 20.

[0032] Furthermore, elastic connecting layers 21 are provided at both ends of the valve plate 5, and the elastic connecting layers 21 can be attached to the inner wall of the valve body 1.

[0033] When the ventilation butterfly valve needs to be adjusted, the drive motor 13 is turned on, driving the rotating screw 10a to rotate, which in turn drives the moving rack 11 to rise and fall, thereby driving the second gear 12 and the first gear 9 to rotate, which in turn drives the large gear ring 7 and the valve plate 5 to rotate, thereby adjusting the air volume and flow rate. Since the inner diameter of the first gear 9 is much smaller than the inner diameter of the large gear ring 7, driving the first gear 9 to rotate can drive the large gear ring 7 and the valve plate 5 to rotate slowly. At the same time, the rotation angle of the valve plate 5 can be accurately indicated by the number of rotations of the first gear 9, thereby achieving precise adjustment of the flow rate.

[0034] By setting up a rotating lead screw 10a and a moving rack 11, when the ventilation butterfly valve needs to be adjusted, the drive motor 13 is turned on to drive the rotating lead screw 10a to rotate, which in turn drives the moving rack 11 to rise and fall, thereby driving the second gear 12 and the first gear 9 to rotate, which in turn drives the large gear ring 7 and the valve plate 5 to rotate. Therefore, by controlling the distance the moving rack 11 moves, the number of rotations of the second gear 12 and the first gear 9 can be further adjusted, thereby achieving precise adjustment of the rotation angle of the valve plate 5.

[0035] By setting the indicator rod 19 and the indicator disc 20, the rotation angle of the valve plate 5 can be intuitively indicated, making it convenient for staff to observe.

[0036] By setting a second limiting block 16, a third limiting block 17, etc., the connection between the moving rack 11 and the fixed block 14 is increased, thereby improving the stability of the moving rack 11 during the movement process.

[0037] By setting the elastic connection layer 21, the connection between the valve plate 5 and the inner wall of the valve body 1 is improved, making the sealing performance of the ventilation butterfly valve better.

[0038] It should be noted that in this invention, "upper" and "lower" are both used in conjunction with the appendix. Figure 1 For reference only.

[0039] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0040] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A ventilation butterfly valve capable of precisely adjusting flow rate, characterized in that: The valve body includes a valve body (1), an air inlet pipe (2) connected to the top of the valve body (1), and an air outlet pipe (3) connected to the bottom of the valve body (1). An adjusting rod (4) is rotatably mounted on the valve body (1) in the horizontal direction. A valve plate (5) is mounted on the adjusting rod (4) and is located inside the valve body (1). An adjusting disc (6) is mounted on one end of the adjusting rod (4) and a large gear ring (7) is mounted on the adjusting disc (6). A driving rod (8) is rotatably mounted on the outer side of the valve body (1) in a direction parallel to the adjusting rod (4). A first gear (9) is mounted on the driving rod (8) and meshes with the inner side of the large gear ring (7). The end of the first gear (9) is at a set distance from the adjusting disc (6). An adjusting mechanism (10) for driving the first gear (9) to rotate is mounted on the outer side of the valve body (1).

2. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 1, characterized in that: The adjusting mechanism (10) includes a rotating lead screw (10a) rotatably mounted on the valve body (1) in the vertical direction and a moving block (10b) cooperating on the rotating lead screw (10a). A moving rack (11) is vertically mounted on one side of the moving block (10b). A second gear (12) that meshes with the moving rack (11) is provided at the end of the drive rod (8) away from the adjusting disc (6). A drive motor (13) for driving the rotating lead screw (10a) is provided on the valve body (1).

3. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 2, characterized in that: A fixed block (14) is provided on the valve body (1), and the drive rod (8) is rotatably mounted on the fixed block (14). When the moving block (10b) abuts against the fixed block (14), the central axis of the air inlet pipe (2) is perpendicular to the horizontal plane where the valve plate (5) is located.

4. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 3, characterized in that: The valve body (1) is provided with a first limiting block (15). When the moving block (10b) abuts against the first limiting block (15), the plane where the valve plate (5) is located is parallel to the central axis of the air inlet pipe (2).

5. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 4, characterized in that: A second limiting block (16) is vertically arranged on one side of the movable rack (11), and a third limiting block (17) is arranged on the fixed block (14). A limiting groove (18) that cooperates with the second limiting block (16) is opened on the third limiting block (17) in the vertical direction.

6. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 1, characterized in that: An indicator rod (19) is provided at the end of the adjusting rod (4) away from the adjusting disc (6) along a direction that coincides with the horizontal plane where the valve plate (5) is located.

7. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 6, characterized in that: The valve body (1) is provided with an annular indicator disc (20) on the side near the indicator rod (19), and the central axis of the indicator disc (20) coincides with the central axis of the adjusting rod (4).

8. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 7, characterized in that: The end of the indicator rod (19) can be movably attached to the inner wall of the indicator disc (20).

9. A ventilation butterfly valve capable of precisely adjusting flow rate according to claim 1, characterized in that: The valve plate (5) has elastic connecting layers (21) at both ends, and the elastic connecting layers (21) can be attached to the inner wall of the valve body (1).

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