High-rigidity smoke and air duct two-way zero-leakage butterfly valve

Abstract

The utility model discloses a high-rigidity smoke and air duct two-way zero-leakage butterfly valve which comprises a valve shell, connecting flanges are arranged at the two ends of the valve shell, a mounting frame is arranged on the outer wall of the valve shell, a servo motor is arranged at the top end of the mounting frame, a rotating shaft is arranged in the mounting frame, and the top end of the rotating shaft extends into the valve shell to be connected with a butterfly plate. The top end of the rotating shaft extends out of the mounting frame to be connected with the driving end of the servo motor, and an auxiliary limiting assembly matched with the rotating shaft is arranged in the mounting frame. The butterfly valve has the beneficial effects that by arranging the auxiliary limiting assembly, the rotating shaft on the two-way butterfly valve can be further limited in a reinforced mode, the situation that the butterfly plate is impacted, the rotating shaft rotates, and then leakage of the two-way butterfly valve is caused is prevented, and the safety of the butterfly valve is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely related to a high rigidity smoke air duct bidirectional zero leakage butterfly valve. BACKGROUND

[0002] Bidirectional butterfly valve is a kind of valve for pipeline system, it has two flow directions, can realize the bidirectional flow control of medium.The main role of bidirectional butterfly valve is to regulate and cut off the fluid in pipeline.Compared with one-way butterfly valve, bidirectional butterfly valve has better sealing performance and more extensive application range.

[0003] The existing bidirectional butterfly valve is easily impacted by gas or liquid in the process of use, and then the butterfly plate drives the butterfly valve spindle to rotate, causing the butterfly valve to leak, which affects the sealing effect of the butterfly valve.

[0004] For the problems in the related art, there is no effective solution at present. UTILITY MODEL CONTENTS

[0005] For the problems in the related art, the utility model provides a high rigidity smoke air duct bidirectional zero leakage butterfly valve to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] A kind of high rigidity smoke air duct bidirectional zero leakage butterfly valve, including valve shell, the valve shell both ends are equipped with connecting flange, the valve shell outer wall is equipped with mounting bracket, the mounting bracket top is equipped with servo motor, the mounting bracket is equipped with rotating shaft, the rotating shaft top extends into the valve shell and is connected with butterfly plate, the rotating shaft top extends to the outside of the mounting bracket and is connected with the driving end of the servo motor, the mounting bracket is equipped with auxiliary limiting component matched with the rotating shaft.

[0008] As preferred, the rotating shaft is provided with a sealing sleeve at the connection with the valve shell.

[0009] As preferred, the auxiliary limiting component includes an inner tooth ring fitted on the outer wall of the rotating shaft in the mounting bracket, the outer wall of the inner tooth ring is provided with symmetrically arranged guide blocks, the inner top of the mounting bracket is provided with symmetrically arranged guide rods respectively penetrating through two groups of guide blocks, the bottom end of the guide rod is provided with a anti-drop block, the outer wall of the rotating shaft is fixedly fitted with a limiting gear engaged with the inner tooth ring, two groups of guide rods are fixedly fitted with L-shaped fixing frames on the outer wall, and a spring is fitted on the outer wall of the guide rod between the guide block and the L-shaped fixing frame.

[0010] As preferred, a sliding hole matched with the guide rod is formed on the guide block, and the guide block is connected with the L-shaped fixing frame through the spring.

[0011] Preferably, the L-shaped fixing frame is provided with a hand screw bolt away from one side of the guide rod, the L-shaped fixing frame is provided with a threaded hole matched with the hand screw bolt, and the guide block is provided with a threaded groove matched with the hand screw bolt.

[0012] Preferably, the head of the hand screw bolt is sleeved with an anti-skid rubber sleeve.

[0013] The beneficial effects of the utility model are that: through the setting of the auxiliary limiting assembly, the rotating shaft on the bidirectional butterfly valve can be further strengthened and limited, the rotating shaft is prevented from rotating due to the impact of the butterfly plate, the bidirectional butterfly valve is prevented from leaking, and the safety thereof is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0015] Fig. 1 It is a whole structure schematic view of a high-rigidity flue gas duct bidirectional zero-leakage butterfly valve according to the utility model embodiment;

[0016] Fig. 2 It is a front view of a high-rigidity flue gas duct bidirectional zero-leakage butterfly valve according to the utility model embodiment;

[0017] Fig. 3 It is an internal structure schematic view of a mounting frame in a high-rigidity flue gas duct bidirectional zero-leakage butterfly valve according to the utility model embodiment.

[0018] In the drawings:

[0019] 1, valve shell;2, connecting flange;3, mounting frame;4, servo motor;5, rotating shaft;6, inner gear ring;7, guide block;8, guide rod;9, anti-drop block;10, limiting gear;11, L-shaped fixing frame;12, spring;13, hand screw bolt;14, threaded hole;15, threaded groove;16, butterfly plate. DETAILED DESCRIPTION

[0020] To further illustrate the embodiments, the utility model provides with the drawings, these drawings are part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate the related description of the specification to explain the operation principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn according to scale, and similar component symbols are usually used to indicate similar components.

[0021] According to the embodiment of the utility model, a high-rigidity smoke and air duct bidirectional zero-leakage butterfly valve is provided.

[0022] Embodiment one;

[0023] As Figs. 1-3 shown, according to the high-rigidity smoke and air duct bidirectional zero-leakage butterfly valve of the utility model embodiment, including the valve shell 1, the valve shell 1 both ends are equipped with the connecting flange 2, the valve shell 1 outer wall is equipped with the mounting bracket 3, the mounting bracket 3 top is equipped with servo motor 4, the mounting bracket 3 in be equipped with the pivot 5, the pivot 5 top end extends to the valve shell 1 with butterfly plate 16 is connected, the pivot 5 top end extends to the mounting bracket 3 with servo motor 4 drive end is connected, the mounting bracket 3 in be equipped with the auxiliary limiting assembly matched with the pivot 5.

[0024] Embodiment two;

[0025] As Figs. 1-3As shown, including valve shell 1, both ends of the valve shell 1 is equipped with connecting flange 2, the outer wall of the valve shell 1 is equipped with mounting bracket 3, the top of the mounting bracket 3 is equipped with servo motor 4, the mounting bracket 3 is equipped with rotating shaft 5, the rotating shaft 5 extends into the valve shell 1 and is connected with the butterfly plate 16, the rotating shaft 5 extends to the outside of the mounting bracket 3 and is connected with the driving end of the servo motor 4, the mounting bracket 3 is equipped with auxiliary limiting assembly matched with the rotating shaft 5. The connecting part of the rotating shaft 5 and the valve shell 1 is equipped with a sealing sleeve. The auxiliary limiting assembly includes an inner tooth ring 6 which is sleeved on the outer wall of the rotating shaft 5 in the mounting bracket 3, the outer wall of the inner tooth ring 6 is equipped with symmetrically arranged guide blocks 7, the inner top of the mounting bracket 3 is equipped with symmetrically arranged guide rods 8 which respectively penetrate through two groups of guide blocks 7, the bottom of the guide rod 8 is equipped with a anti-drop block 9, the outer wall of the rotating shaft 5 is fixedly sleeved with a limiting gear 10 engaged with the inner tooth ring 6, two groups of guide rods 8 are fixedly sleeved with L-shaped fixing frames 11, and springs 12 are sleeved between the guide blocks 7 and the L-shaped fixing frames 11 and on the outer wall of the guide rods 8. The guide block 7 is provided with a sliding hole matched with the guide rod 8, and the guide block 7 is connected with the L-shaped fixing frame 11 through the spring 12. The side of the L-shaped fixing frame 11 away from the guide rod 8 is equipped with a hand screw bolt 13, the L-shaped fixing frame 11 is provided with a threaded hole 14 matched with the hand screw bolt 13, and the guide block 7 is provided with a threaded groove 15 matched with the hand screw bolt 13. The head of the hand screw bolt 13 is sleeved with an anti-skid rubber sleeve.

[0026] In actual application, when the bidirectional butterfly valve is closed, first pull the inner tooth ring 6 upwards to move, so that it is separated from the limiting gear 10, when the inner tooth ring 6 moves to the L-shaped fixing frame 11, rotate the hand screw bolt 13 to tighten the guide block 7 and fix the inner tooth ring 6, at this time the spring 12 is in compression state, then start the servo motor 4 to drive the rotating shaft 5 to rotate, the rotating shaft 5 drives the butterfly plate 16 to rotate, after completion, loosen the hand screw bolt 13 to release the limiting of the guide block 7, at this time the spring 12 resets to drive the inner tooth ring 6 to move downwards, so that the inner tooth ring 6 is engaged with the limiting gear 10 to limit the rotating shaft, through the setting of the auxiliary limiting assembly, the rotating shaft of the bidirectional butterfly valve can be further strengthened and limited, to prevent the butterfly plate from being impacted to cause the rotating shaft to rotate, and then cause the bidirectional butterfly valve to leak, further improve its safety.

[0027] In summary, by means of the above technical scheme of the utility model, through the setting of the auxiliary limiting assembly, the rotating shaft of the bidirectional butterfly valve can be further strengthened and limited, to prevent the butterfly plate from being impacted to cause the rotating shaft to rotate, and then cause the bidirectional butterfly valve to leak, further improve its safety.

[0028] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high rigidity smoke duct bidirectional zero leakage butterfly valve, characterized in that, The utility model provides a butterfly valve, including valve shell (1), the both ends of valve shell (1) are equipped with connecting flange (2), the outer wall of valve shell (1) is equipped with mounting bracket (3), the top of mounting bracket (3) is equipped with servo motor (4), be equipped with rotating shaft (5) in mounting bracket (3), the top of rotating shaft (5) extends to the valve shell (1) with butterfly plate (16) is connected, the top of rotating shaft (5) extends to the mounting bracket (3) outside with servo motor (4) drive end is connected, be equipped with auxiliary limit component with rotating shaft (5) is matched in mounting bracket (3), auxiliary limit component includes the inner tooth ring (6) in mounting bracket (3) and located the sleeve of outer wall of rotating shaft (5) is equipped with, the outer wall of inner tooth ring (6) is equipped with the guide block (7) of symmetrical arrangement, the top of mounting bracket (3) is equipped with the guide rod (8) of symmetrical arrangement and respectively penetrates two groups guide block (7), the bottom of guide rod (8) is equipped with anti -drop block (9), the outer wall of rotating shaft (5) is fixedly sleeved with the limit gear (10) with the meshing of inner tooth ring (6), two groups guide rod (8) outer wall are all fixedly sleeved with L type fixed frame (11), the spring (12) is sleeved between guide block (7) and L type fixed frame (11) and located the outer wall of guide rod (8) is equipped with.

2. A high rigidity smoke flue bi-directional zero leakage butterfly valve according to claim 1, characterized in that, The connecting part of rotating shaft (5) and valve shell (1) is equipped with sealing sleeve.

3. A high rigidity smoke flue butterfly valve of bidirectional zero leakage according to claim 1, characterized in that, The guide block (7) is equipped with sliding hole matched with the guide rod (8), and the guide block (7) is connected with the L type fixed frame (11) through the spring (12).

4. A high rigidity smoke flue butterfly valve of bidirectional zero leakage according to claim 1, characterized in that, The side, away from the guide rod (8), of the L type fixed frame (11) is equipped with a hand screw bolt (13), the L type fixed frame (11) is equipped with a threaded hole (14) matched with the hand screw bolt (13), and the guide block (7) is equipped with a threaded groove (15) matched with the hand screw bolt (13).

5. A high rigidity smoke flue butterfly valve of bidirectional zero leakage according to claim 4, characterized in that, The head of the hand screw bolt (13) is sleeved with an anti-skid rubber sleeve.

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